diff options
Diffstat (limited to 'vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh')
67 files changed, 0 insertions, 19762 deletions
diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/client.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/client.go deleted file mode 100644 index dce7682fa..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/client.go +++ /dev/null @@ -1,683 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package agent implements the ssh-agent protocol, and provides both -// a client and a server. The client can talk to a standard ssh-agent -// that uses UNIX sockets, and one could implement an alternative -// ssh-agent process using the sample server. -// -// References: -// [PROTOCOL.agent]: http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.agent?rev=HEAD -package agent // import "golang.org/x/crypto/ssh/agent" - -import ( - "bytes" - "crypto/dsa" - "crypto/ecdsa" - "crypto/elliptic" - "crypto/rsa" - "encoding/base64" - "encoding/binary" - "errors" - "fmt" - "io" - "math/big" - "sync" - - "golang.org/x/crypto/ed25519" - "golang.org/x/crypto/ssh" -) - -// Agent represents the capabilities of an ssh-agent. -type Agent interface { - // List returns the identities known to the agent. - List() ([]*Key, error) - - // Sign has the agent sign the data using a protocol 2 key as defined - // in [PROTOCOL.agent] section 2.6.2. - Sign(key ssh.PublicKey, data []byte) (*ssh.Signature, error) - - // Add adds a private key to the agent. - Add(key AddedKey) error - - // Remove removes all identities with the given public key. - Remove(key ssh.PublicKey) error - - // RemoveAll removes all identities. - RemoveAll() error - - // Lock locks the agent. Sign and Remove will fail, and List will empty an empty list. - Lock(passphrase []byte) error - - // Unlock undoes the effect of Lock - Unlock(passphrase []byte) error - - // Signers returns signers for all the known keys. - Signers() ([]ssh.Signer, error) -} - -// ConstraintExtension describes an optional constraint defined by users. -type ConstraintExtension struct { - // ExtensionName consist of a UTF-8 string suffixed by the - // implementation domain following the naming scheme defined - // in Section 4.2 of [RFC4251], e.g. "foo@example.com". - ExtensionName string - // ExtensionDetails contains the actual content of the extended - // constraint. - ExtensionDetails []byte -} - -// AddedKey describes an SSH key to be added to an Agent. -type AddedKey struct { - // PrivateKey must be a *rsa.PrivateKey, *dsa.PrivateKey or - // *ecdsa.PrivateKey, which will be inserted into the agent. - PrivateKey interface{} - // Certificate, if not nil, is communicated to the agent and will be - // stored with the key. - Certificate *ssh.Certificate - // Comment is an optional, free-form string. - Comment string - // LifetimeSecs, if not zero, is the number of seconds that the - // agent will store the key for. - LifetimeSecs uint32 - // ConfirmBeforeUse, if true, requests that the agent confirm with the - // user before each use of this key. - ConfirmBeforeUse bool - // ConstraintExtensions are the experimental or private-use constraints - // defined by users. - ConstraintExtensions []ConstraintExtension -} - -// See [PROTOCOL.agent], section 3. -const ( - agentRequestV1Identities = 1 - agentRemoveAllV1Identities = 9 - - // 3.2 Requests from client to agent for protocol 2 key operations - agentAddIdentity = 17 - agentRemoveIdentity = 18 - agentRemoveAllIdentities = 19 - agentAddIdConstrained = 25 - - // 3.3 Key-type independent requests from client to agent - agentAddSmartcardKey = 20 - agentRemoveSmartcardKey = 21 - agentLock = 22 - agentUnlock = 23 - agentAddSmartcardKeyConstrained = 26 - - // 3.7 Key constraint identifiers - agentConstrainLifetime = 1 - agentConstrainConfirm = 2 - agentConstrainExtension = 3 -) - -// maxAgentResponseBytes is the maximum agent reply size that is accepted. This -// is a sanity check, not a limit in the spec. -const maxAgentResponseBytes = 16 << 20 - -// Agent messages: -// These structures mirror the wire format of the corresponding ssh agent -// messages found in [PROTOCOL.agent]. - -// 3.4 Generic replies from agent to client -const agentFailure = 5 - -type failureAgentMsg struct{} - -const agentSuccess = 6 - -type successAgentMsg struct{} - -// See [PROTOCOL.agent], section 2.5.2. -const agentRequestIdentities = 11 - -type requestIdentitiesAgentMsg struct{} - -// See [PROTOCOL.agent], section 2.5.2. -const agentIdentitiesAnswer = 12 - -type identitiesAnswerAgentMsg struct { - NumKeys uint32 `sshtype:"12"` - Keys []byte `ssh:"rest"` -} - -// See [PROTOCOL.agent], section 2.6.2. -const agentSignRequest = 13 - -type signRequestAgentMsg struct { - KeyBlob []byte `sshtype:"13"` - Data []byte - Flags uint32 -} - -// See [PROTOCOL.agent], section 2.6.2. - -// 3.6 Replies from agent to client for protocol 2 key operations -const agentSignResponse = 14 - -type signResponseAgentMsg struct { - SigBlob []byte `sshtype:"14"` -} - -type publicKey struct { - Format string - Rest []byte `ssh:"rest"` -} - -// 3.7 Key constraint identifiers -type constrainLifetimeAgentMsg struct { - LifetimeSecs uint32 `sshtype:"1"` -} - -type constrainExtensionAgentMsg struct { - ExtensionName string `sshtype:"3"` - ExtensionDetails []byte - - // Rest is a field used for parsing, not part of message - Rest []byte `ssh:"rest"` -} - -// Key represents a protocol 2 public key as defined in -// [PROTOCOL.agent], section 2.5.2. -type Key struct { - Format string - Blob []byte - Comment string -} - -func clientErr(err error) error { - return fmt.Errorf("agent: client error: %v", err) -} - -// String returns the storage form of an agent key with the format, base64 -// encoded serialized key, and the comment if it is not empty. -func (k *Key) String() string { - s := string(k.Format) + " " + base64.StdEncoding.EncodeToString(k.Blob) - - if k.Comment != "" { - s += " " + k.Comment - } - - return s -} - -// Type returns the public key type. -func (k *Key) Type() string { - return k.Format -} - -// Marshal returns key blob to satisfy the ssh.PublicKey interface. -func (k *Key) Marshal() []byte { - return k.Blob -} - -// Verify satisfies the ssh.PublicKey interface. -func (k *Key) Verify(data []byte, sig *ssh.Signature) error { - pubKey, err := ssh.ParsePublicKey(k.Blob) - if err != nil { - return fmt.Errorf("agent: bad public key: %v", err) - } - return pubKey.Verify(data, sig) -} - -type wireKey struct { - Format string - Rest []byte `ssh:"rest"` -} - -func parseKey(in []byte) (out *Key, rest []byte, err error) { - var record struct { - Blob []byte - Comment string - Rest []byte `ssh:"rest"` - } - - if err := ssh.Unmarshal(in, &record); err != nil { - return nil, nil, err - } - - var wk wireKey - if err := ssh.Unmarshal(record.Blob, &wk); err != nil { - return nil, nil, err - } - - return &Key{ - Format: wk.Format, - Blob: record.Blob, - Comment: record.Comment, - }, record.Rest, nil -} - -// client is a client for an ssh-agent process. -type client struct { - // conn is typically a *net.UnixConn - conn io.ReadWriter - // mu is used to prevent concurrent access to the agent - mu sync.Mutex -} - -// NewClient returns an Agent that talks to an ssh-agent process over -// the given connection. -func NewClient(rw io.ReadWriter) Agent { - return &client{conn: rw} -} - -// call sends an RPC to the agent. On success, the reply is -// unmarshaled into reply and replyType is set to the first byte of -// the reply, which contains the type of the message. -func (c *client) call(req []byte) (reply interface{}, err error) { - c.mu.Lock() - defer c.mu.Unlock() - - msg := make([]byte, 4+len(req)) - binary.BigEndian.PutUint32(msg, uint32(len(req))) - copy(msg[4:], req) - if _, err = c.conn.Write(msg); err != nil { - return nil, clientErr(err) - } - - var respSizeBuf [4]byte - if _, err = io.ReadFull(c.conn, respSizeBuf[:]); err != nil { - return nil, clientErr(err) - } - respSize := binary.BigEndian.Uint32(respSizeBuf[:]) - if respSize > maxAgentResponseBytes { - return nil, clientErr(err) - } - - buf := make([]byte, respSize) - if _, err = io.ReadFull(c.conn, buf); err != nil { - return nil, clientErr(err) - } - reply, err = unmarshal(buf) - if err != nil { - return nil, clientErr(err) - } - return reply, err -} - -func (c *client) simpleCall(req []byte) error { - resp, err := c.call(req) - if err != nil { - return err - } - if _, ok := resp.(*successAgentMsg); ok { - return nil - } - return errors.New("agent: failure") -} - -func (c *client) RemoveAll() error { - return c.simpleCall([]byte{agentRemoveAllIdentities}) -} - -func (c *client) Remove(key ssh.PublicKey) error { - req := ssh.Marshal(&agentRemoveIdentityMsg{ - KeyBlob: key.Marshal(), - }) - return c.simpleCall(req) -} - -func (c *client) Lock(passphrase []byte) error { - req := ssh.Marshal(&agentLockMsg{ - Passphrase: passphrase, - }) - return c.simpleCall(req) -} - -func (c *client) Unlock(passphrase []byte) error { - req := ssh.Marshal(&agentUnlockMsg{ - Passphrase: passphrase, - }) - return c.simpleCall(req) -} - -// List returns the identities known to the agent. -func (c *client) List() ([]*Key, error) { - // see [PROTOCOL.agent] section 2.5.2. - req := []byte{agentRequestIdentities} - - msg, err := c.call(req) - if err != nil { - return nil, err - } - - switch msg := msg.(type) { - case *identitiesAnswerAgentMsg: - if msg.NumKeys > maxAgentResponseBytes/8 { - return nil, errors.New("agent: too many keys in agent reply") - } - keys := make([]*Key, msg.NumKeys) - data := msg.Keys - for i := uint32(0); i < msg.NumKeys; i++ { - var key *Key - var err error - if key, data, err = parseKey(data); err != nil { - return nil, err - } - keys[i] = key - } - return keys, nil - case *failureAgentMsg: - return nil, errors.New("agent: failed to list keys") - } - panic("unreachable") -} - -// Sign has the agent sign the data using a protocol 2 key as defined -// in [PROTOCOL.agent] section 2.6.2. -func (c *client) Sign(key ssh.PublicKey, data []byte) (*ssh.Signature, error) { - req := ssh.Marshal(signRequestAgentMsg{ - KeyBlob: key.Marshal(), - Data: data, - }) - - msg, err := c.call(req) - if err != nil { - return nil, err - } - - switch msg := msg.(type) { - case *signResponseAgentMsg: - var sig ssh.Signature - if err := ssh.Unmarshal(msg.SigBlob, &sig); err != nil { - return nil, err - } - - return &sig, nil - case *failureAgentMsg: - return nil, errors.New("agent: failed to sign challenge") - } - panic("unreachable") -} - -// unmarshal parses an agent message in packet, returning the parsed -// form and the message type of packet. -func unmarshal(packet []byte) (interface{}, error) { - if len(packet) < 1 { - return nil, errors.New("agent: empty packet") - } - var msg interface{} - switch packet[0] { - case agentFailure: - return new(failureAgentMsg), nil - case agentSuccess: - return new(successAgentMsg), nil - case agentIdentitiesAnswer: - msg = new(identitiesAnswerAgentMsg) - case agentSignResponse: - msg = new(signResponseAgentMsg) - case agentV1IdentitiesAnswer: - msg = new(agentV1IdentityMsg) - default: - return nil, fmt.Errorf("agent: unknown type tag %d", packet[0]) - } - if err := ssh.Unmarshal(packet, msg); err != nil { - return nil, err - } - return msg, nil -} - -type rsaKeyMsg struct { - Type string `sshtype:"17|25"` - N *big.Int - E *big.Int - D *big.Int - Iqmp *big.Int // IQMP = Inverse Q Mod P - P *big.Int - Q *big.Int - Comments string - Constraints []byte `ssh:"rest"` -} - -type dsaKeyMsg struct { - Type string `sshtype:"17|25"` - P *big.Int - Q *big.Int - G *big.Int - Y *big.Int - X *big.Int - Comments string - Constraints []byte `ssh:"rest"` -} - -type ecdsaKeyMsg struct { - Type string `sshtype:"17|25"` - Curve string - KeyBytes []byte - D *big.Int - Comments string - Constraints []byte `ssh:"rest"` -} - -type ed25519KeyMsg struct { - Type string `sshtype:"17|25"` - Pub []byte - Priv []byte - Comments string - Constraints []byte `ssh:"rest"` -} - -// Insert adds a private key to the agent. -func (c *client) insertKey(s interface{}, comment string, constraints []byte) error { - var req []byte - switch k := s.(type) { - case *rsa.PrivateKey: - if len(k.Primes) != 2 { - return fmt.Errorf("agent: unsupported RSA key with %d primes", len(k.Primes)) - } - k.Precompute() - req = ssh.Marshal(rsaKeyMsg{ - Type: ssh.KeyAlgoRSA, - N: k.N, - E: big.NewInt(int64(k.E)), - D: k.D, - Iqmp: k.Precomputed.Qinv, - P: k.Primes[0], - Q: k.Primes[1], - Comments: comment, - Constraints: constraints, - }) - case *dsa.PrivateKey: - req = ssh.Marshal(dsaKeyMsg{ - Type: ssh.KeyAlgoDSA, - P: k.P, - Q: k.Q, - G: k.G, - Y: k.Y, - X: k.X, - Comments: comment, - Constraints: constraints, - }) - case *ecdsa.PrivateKey: - nistID := fmt.Sprintf("nistp%d", k.Params().BitSize) - req = ssh.Marshal(ecdsaKeyMsg{ - Type: "ecdsa-sha2-" + nistID, - Curve: nistID, - KeyBytes: elliptic.Marshal(k.Curve, k.X, k.Y), - D: k.D, - Comments: comment, - Constraints: constraints, - }) - case *ed25519.PrivateKey: - req = ssh.Marshal(ed25519KeyMsg{ - Type: ssh.KeyAlgoED25519, - Pub: []byte(*k)[32:], - Priv: []byte(*k), - Comments: comment, - Constraints: constraints, - }) - default: - return fmt.Errorf("agent: unsupported key type %T", s) - } - - // if constraints are present then the message type needs to be changed. - if len(constraints) != 0 { - req[0] = agentAddIdConstrained - } - - resp, err := c.call(req) - if err != nil { - return err - } - if _, ok := resp.(*successAgentMsg); ok { - return nil - } - return errors.New("agent: failure") -} - -type rsaCertMsg struct { - Type string `sshtype:"17|25"` - CertBytes []byte - D *big.Int - Iqmp *big.Int // IQMP = Inverse Q Mod P - P *big.Int - Q *big.Int - Comments string - Constraints []byte `ssh:"rest"` -} - -type dsaCertMsg struct { - Type string `sshtype:"17|25"` - CertBytes []byte - X *big.Int - Comments string - Constraints []byte `ssh:"rest"` -} - -type ecdsaCertMsg struct { - Type string `sshtype:"17|25"` - CertBytes []byte - D *big.Int - Comments string - Constraints []byte `ssh:"rest"` -} - -type ed25519CertMsg struct { - Type string `sshtype:"17|25"` - CertBytes []byte - Pub []byte - Priv []byte - Comments string - Constraints []byte `ssh:"rest"` -} - -// Add adds a private key to the agent. If a certificate is given, -// that certificate is added instead as public key. -func (c *client) Add(key AddedKey) error { - var constraints []byte - - if secs := key.LifetimeSecs; secs != 0 { - constraints = append(constraints, ssh.Marshal(constrainLifetimeAgentMsg{secs})...) - } - - if key.ConfirmBeforeUse { - constraints = append(constraints, agentConstrainConfirm) - } - - if cert := key.Certificate; cert == nil { - return c.insertKey(key.PrivateKey, key.Comment, constraints) - } else { - return c.insertCert(key.PrivateKey, cert, key.Comment, constraints) - } -} - -func (c *client) insertCert(s interface{}, cert *ssh.Certificate, comment string, constraints []byte) error { - var req []byte - switch k := s.(type) { - case *rsa.PrivateKey: - if len(k.Primes) != 2 { - return fmt.Errorf("agent: unsupported RSA key with %d primes", len(k.Primes)) - } - k.Precompute() - req = ssh.Marshal(rsaCertMsg{ - Type: cert.Type(), - CertBytes: cert.Marshal(), - D: k.D, - Iqmp: k.Precomputed.Qinv, - P: k.Primes[0], - Q: k.Primes[1], - Comments: comment, - Constraints: constraints, - }) - case *dsa.PrivateKey: - req = ssh.Marshal(dsaCertMsg{ - Type: cert.Type(), - CertBytes: cert.Marshal(), - X: k.X, - Comments: comment, - Constraints: constraints, - }) - case *ecdsa.PrivateKey: - req = ssh.Marshal(ecdsaCertMsg{ - Type: cert.Type(), - CertBytes: cert.Marshal(), - D: k.D, - Comments: comment, - Constraints: constraints, - }) - case *ed25519.PrivateKey: - req = ssh.Marshal(ed25519CertMsg{ - Type: cert.Type(), - CertBytes: cert.Marshal(), - Pub: []byte(*k)[32:], - Priv: []byte(*k), - Comments: comment, - Constraints: constraints, - }) - default: - return fmt.Errorf("agent: unsupported key type %T", s) - } - - // if constraints are present then the message type needs to be changed. - if len(constraints) != 0 { - req[0] = agentAddIdConstrained - } - - signer, err := ssh.NewSignerFromKey(s) - if err != nil { - return err - } - if bytes.Compare(cert.Key.Marshal(), signer.PublicKey().Marshal()) != 0 { - return errors.New("agent: signer and cert have different public key") - } - - resp, err := c.call(req) - if err != nil { - return err - } - if _, ok := resp.(*successAgentMsg); ok { - return nil - } - return errors.New("agent: failure") -} - -// Signers provides a callback for client authentication. -func (c *client) Signers() ([]ssh.Signer, error) { - keys, err := c.List() - if err != nil { - return nil, err - } - - var result []ssh.Signer - for _, k := range keys { - result = append(result, &agentKeyringSigner{c, k}) - } - return result, nil -} - -type agentKeyringSigner struct { - agent *client - pub ssh.PublicKey -} - -func (s *agentKeyringSigner) PublicKey() ssh.PublicKey { - return s.pub -} - -func (s *agentKeyringSigner) Sign(rand io.Reader, data []byte) (*ssh.Signature, error) { - // The agent has its own entropy source, so the rand argument is ignored. - return s.agent.Sign(s.pub, data) -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/client_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/client_test.go deleted file mode 100644 index 266fd6d40..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/client_test.go +++ /dev/null @@ -1,379 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package agent - -import ( - "bytes" - "crypto/rand" - "errors" - "net" - "os" - "os/exec" - "path/filepath" - "strconv" - "testing" - "time" - - "golang.org/x/crypto/ssh" -) - -// startOpenSSHAgent executes ssh-agent, and returns an Agent interface to it. -func startOpenSSHAgent(t *testing.T) (client Agent, socket string, cleanup func()) { - if testing.Short() { - // ssh-agent is not always available, and the key - // types supported vary by platform. - t.Skip("skipping test due to -short") - } - - bin, err := exec.LookPath("ssh-agent") - if err != nil { - t.Skip("could not find ssh-agent") - } - - cmd := exec.Command(bin, "-s") - out, err := cmd.Output() - if err != nil { - t.Fatalf("cmd.Output: %v", err) - } - - /* Output looks like: - - SSH_AUTH_SOCK=/tmp/ssh-P65gpcqArqvH/agent.15541; export SSH_AUTH_SOCK; - SSH_AGENT_PID=15542; export SSH_AGENT_PID; - echo Agent pid 15542; - */ - fields := bytes.Split(out, []byte(";")) - line := bytes.SplitN(fields[0], []byte("="), 2) - line[0] = bytes.TrimLeft(line[0], "\n") - if string(line[0]) != "SSH_AUTH_SOCK" { - t.Fatalf("could not find key SSH_AUTH_SOCK in %q", fields[0]) - } - socket = string(line[1]) - - line = bytes.SplitN(fields[2], []byte("="), 2) - line[0] = bytes.TrimLeft(line[0], "\n") - if string(line[0]) != "SSH_AGENT_PID" { - t.Fatalf("could not find key SSH_AGENT_PID in %q", fields[2]) - } - pidStr := line[1] - pid, err := strconv.Atoi(string(pidStr)) - if err != nil { - t.Fatalf("Atoi(%q): %v", pidStr, err) - } - - conn, err := net.Dial("unix", string(socket)) - if err != nil { - t.Fatalf("net.Dial: %v", err) - } - - ac := NewClient(conn) - return ac, socket, func() { - proc, _ := os.FindProcess(pid) - if proc != nil { - proc.Kill() - } - conn.Close() - os.RemoveAll(filepath.Dir(socket)) - } -} - -// startKeyringAgent uses Keyring to simulate a ssh-agent Server and returns a client. -func startKeyringAgent(t *testing.T) (client Agent, cleanup func()) { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - go ServeAgent(NewKeyring(), c2) - - return NewClient(c1), func() { - c1.Close() - c2.Close() - } -} - -func testOpenSSHAgent(t *testing.T, key interface{}, cert *ssh.Certificate, lifetimeSecs uint32) { - agent, _, cleanup := startOpenSSHAgent(t) - defer cleanup() - - testAgentInterface(t, agent, key, cert, lifetimeSecs) -} - -func testKeyringAgent(t *testing.T, key interface{}, cert *ssh.Certificate, lifetimeSecs uint32) { - agent, cleanup := startKeyringAgent(t) - defer cleanup() - - testAgentInterface(t, agent, key, cert, lifetimeSecs) -} - -func testAgentInterface(t *testing.T, agent Agent, key interface{}, cert *ssh.Certificate, lifetimeSecs uint32) { - signer, err := ssh.NewSignerFromKey(key) - if err != nil { - t.Fatalf("NewSignerFromKey(%T): %v", key, err) - } - // The agent should start up empty. - if keys, err := agent.List(); err != nil { - t.Fatalf("RequestIdentities: %v", err) - } else if len(keys) > 0 { - t.Fatalf("got %d keys, want 0: %v", len(keys), keys) - } - - // Attempt to insert the key, with certificate if specified. - var pubKey ssh.PublicKey - if cert != nil { - err = agent.Add(AddedKey{ - PrivateKey: key, - Certificate: cert, - Comment: "comment", - LifetimeSecs: lifetimeSecs, - }) - pubKey = cert - } else { - err = agent.Add(AddedKey{PrivateKey: key, Comment: "comment", LifetimeSecs: lifetimeSecs}) - pubKey = signer.PublicKey() - } - if err != nil { - t.Fatalf("insert(%T): %v", key, err) - } - - // Did the key get inserted successfully? - if keys, err := agent.List(); err != nil { - t.Fatalf("List: %v", err) - } else if len(keys) != 1 { - t.Fatalf("got %v, want 1 key", keys) - } else if keys[0].Comment != "comment" { - t.Fatalf("key comment: got %v, want %v", keys[0].Comment, "comment") - } else if !bytes.Equal(keys[0].Blob, pubKey.Marshal()) { - t.Fatalf("key mismatch") - } - - // Can the agent make a valid signature? - data := []byte("hello") - sig, err := agent.Sign(pubKey, data) - if err != nil { - t.Fatalf("Sign(%s): %v", pubKey.Type(), err) - } - - if err := pubKey.Verify(data, sig); err != nil { - t.Fatalf("Verify(%s): %v", pubKey.Type(), err) - } - - // If the key has a lifetime, is it removed when it should be? - if lifetimeSecs > 0 { - time.Sleep(time.Second*time.Duration(lifetimeSecs) + 100*time.Millisecond) - keys, err := agent.List() - if err != nil { - t.Fatalf("List: %v", err) - } - if len(keys) > 0 { - t.Fatalf("key not expired") - } - } - -} - -func TestAgent(t *testing.T) { - for _, keyType := range []string{"rsa", "dsa", "ecdsa", "ed25519"} { - testOpenSSHAgent(t, testPrivateKeys[keyType], nil, 0) - testKeyringAgent(t, testPrivateKeys[keyType], nil, 0) - } -} - -func TestCert(t *testing.T) { - cert := &ssh.Certificate{ - Key: testPublicKeys["rsa"], - ValidBefore: ssh.CertTimeInfinity, - CertType: ssh.UserCert, - } - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - - testOpenSSHAgent(t, testPrivateKeys["rsa"], cert, 0) - testKeyringAgent(t, testPrivateKeys["rsa"], cert, 0) -} - -// netPipe is analogous to net.Pipe, but it uses a real net.Conn, and -// therefore is buffered (net.Pipe deadlocks if both sides start with -// a write.) -func netPipe() (net.Conn, net.Conn, error) { - listener, err := net.Listen("tcp", "127.0.0.1:0") - if err != nil { - listener, err = net.Listen("tcp", "[::1]:0") - if err != nil { - return nil, nil, err - } - } - defer listener.Close() - c1, err := net.Dial("tcp", listener.Addr().String()) - if err != nil { - return nil, nil, err - } - - c2, err := listener.Accept() - if err != nil { - c1.Close() - return nil, nil, err - } - - return c1, c2, nil -} - -func TestAuth(t *testing.T) { - agent, _, cleanup := startOpenSSHAgent(t) - defer cleanup() - - a, b, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - - defer a.Close() - defer b.Close() - - if err := agent.Add(AddedKey{PrivateKey: testPrivateKeys["rsa"], Comment: "comment"}); err != nil { - t.Errorf("Add: %v", err) - } - - serverConf := ssh.ServerConfig{} - serverConf.AddHostKey(testSigners["rsa"]) - serverConf.PublicKeyCallback = func(c ssh.ConnMetadata, key ssh.PublicKey) (*ssh.Permissions, error) { - if bytes.Equal(key.Marshal(), testPublicKeys["rsa"].Marshal()) { - return nil, nil - } - - return nil, errors.New("pubkey rejected") - } - - go func() { - conn, _, _, err := ssh.NewServerConn(a, &serverConf) - if err != nil { - t.Fatalf("Server: %v", err) - } - conn.Close() - }() - - conf := ssh.ClientConfig{ - HostKeyCallback: ssh.InsecureIgnoreHostKey(), - } - conf.Auth = append(conf.Auth, ssh.PublicKeysCallback(agent.Signers)) - conn, _, _, err := ssh.NewClientConn(b, "", &conf) - if err != nil { - t.Fatalf("NewClientConn: %v", err) - } - conn.Close() -} - -func TestLockOpenSSHAgent(t *testing.T) { - agent, _, cleanup := startOpenSSHAgent(t) - defer cleanup() - testLockAgent(agent, t) -} - -func TestLockKeyringAgent(t *testing.T) { - agent, cleanup := startKeyringAgent(t) - defer cleanup() - testLockAgent(agent, t) -} - -func testLockAgent(agent Agent, t *testing.T) { - if err := agent.Add(AddedKey{PrivateKey: testPrivateKeys["rsa"], Comment: "comment 1"}); err != nil { - t.Errorf("Add: %v", err) - } - if err := agent.Add(AddedKey{PrivateKey: testPrivateKeys["dsa"], Comment: "comment dsa"}); err != nil { - t.Errorf("Add: %v", err) - } - if keys, err := agent.List(); err != nil { - t.Errorf("List: %v", err) - } else if len(keys) != 2 { - t.Errorf("Want 2 keys, got %v", keys) - } - - passphrase := []byte("secret") - if err := agent.Lock(passphrase); err != nil { - t.Errorf("Lock: %v", err) - } - - if keys, err := agent.List(); err != nil { - t.Errorf("List: %v", err) - } else if len(keys) != 0 { - t.Errorf("Want 0 keys, got %v", keys) - } - - signer, _ := ssh.NewSignerFromKey(testPrivateKeys["rsa"]) - if _, err := agent.Sign(signer.PublicKey(), []byte("hello")); err == nil { - t.Fatalf("Sign did not fail") - } - - if err := agent.Remove(signer.PublicKey()); err == nil { - t.Fatalf("Remove did not fail") - } - - if err := agent.RemoveAll(); err == nil { - t.Fatalf("RemoveAll did not fail") - } - - if err := agent.Unlock(nil); err == nil { - t.Errorf("Unlock with wrong passphrase succeeded") - } - if err := agent.Unlock(passphrase); err != nil { - t.Errorf("Unlock: %v", err) - } - - if err := agent.Remove(signer.PublicKey()); err != nil { - t.Fatalf("Remove: %v", err) - } - - if keys, err := agent.List(); err != nil { - t.Errorf("List: %v", err) - } else if len(keys) != 1 { - t.Errorf("Want 1 keys, got %v", keys) - } -} - -func testOpenSSHAgentLifetime(t *testing.T) { - agent, _, cleanup := startOpenSSHAgent(t) - defer cleanup() - testAgentLifetime(t, agent) -} - -func testKeyringAgentLifetime(t *testing.T) { - agent, cleanup := startKeyringAgent(t) - defer cleanup() - testAgentLifetime(t, agent) -} - -func testAgentLifetime(t *testing.T, agent Agent) { - for _, keyType := range []string{"rsa", "dsa", "ecdsa"} { - // Add private keys to the agent. - err := agent.Add(AddedKey{ - PrivateKey: testPrivateKeys[keyType], - Comment: "comment", - LifetimeSecs: 1, - }) - if err != nil { - t.Fatalf("add: %v", err) - } - // Add certs to the agent. - cert := &ssh.Certificate{ - Key: testPublicKeys[keyType], - ValidBefore: ssh.CertTimeInfinity, - CertType: ssh.UserCert, - } - cert.SignCert(rand.Reader, testSigners[keyType]) - err = agent.Add(AddedKey{ - PrivateKey: testPrivateKeys[keyType], - Certificate: cert, - Comment: "comment", - LifetimeSecs: 1, - }) - if err != nil { - t.Fatalf("add: %v", err) - } - } - time.Sleep(1100 * time.Millisecond) - if keys, err := agent.List(); err != nil { - t.Errorf("List: %v", err) - } else if len(keys) != 0 { - t.Errorf("Want 0 keys, got %v", len(keys)) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/example_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/example_test.go deleted file mode 100644 index 85562253e..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/example_test.go +++ /dev/null @@ -1,41 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package agent_test - -import ( - "log" - "net" - "os" - - "golang.org/x/crypto/ssh" - "golang.org/x/crypto/ssh/agent" -) - -func ExampleClientAgent() { - // ssh-agent has a UNIX socket under $SSH_AUTH_SOCK - socket := os.Getenv("SSH_AUTH_SOCK") - conn, err := net.Dial("unix", socket) - if err != nil { - log.Fatalf("net.Dial: %v", err) - } - agentClient := agent.NewClient(conn) - config := &ssh.ClientConfig{ - User: "username", - Auth: []ssh.AuthMethod{ - // Use a callback rather than PublicKeys - // so we only consult the agent once the remote server - // wants it. - ssh.PublicKeysCallback(agentClient.Signers), - }, - HostKeyCallback: ssh.InsecureIgnoreHostKey(), - } - - sshc, err := ssh.Dial("tcp", "localhost:22", config) - if err != nil { - log.Fatalf("Dial: %v", err) - } - // .. use sshc - sshc.Close() -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/forward.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/forward.go deleted file mode 100644 index fd24ba900..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/forward.go +++ /dev/null @@ -1,103 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package agent - -import ( - "errors" - "io" - "net" - "sync" - - "golang.org/x/crypto/ssh" -) - -// RequestAgentForwarding sets up agent forwarding for the session. -// ForwardToAgent or ForwardToRemote should be called to route -// the authentication requests. -func RequestAgentForwarding(session *ssh.Session) error { - ok, err := session.SendRequest("auth-agent-req@openssh.com", true, nil) - if err != nil { - return err - } - if !ok { - return errors.New("forwarding request denied") - } - return nil -} - -// ForwardToAgent routes authentication requests to the given keyring. -func ForwardToAgent(client *ssh.Client, keyring Agent) error { - channels := client.HandleChannelOpen(channelType) - if channels == nil { - return errors.New("agent: already have handler for " + channelType) - } - - go func() { - for ch := range channels { - channel, reqs, err := ch.Accept() - if err != nil { - continue - } - go ssh.DiscardRequests(reqs) - go func() { - ServeAgent(keyring, channel) - channel.Close() - }() - } - }() - return nil -} - -const channelType = "auth-agent@openssh.com" - -// ForwardToRemote routes authentication requests to the ssh-agent -// process serving on the given unix socket. -func ForwardToRemote(client *ssh.Client, addr string) error { - channels := client.HandleChannelOpen(channelType) - if channels == nil { - return errors.New("agent: already have handler for " + channelType) - } - conn, err := net.Dial("unix", addr) - if err != nil { - return err - } - conn.Close() - - go func() { - for ch := range channels { - channel, reqs, err := ch.Accept() - if err != nil { - continue - } - go ssh.DiscardRequests(reqs) - go forwardUnixSocket(channel, addr) - } - }() - return nil -} - -func forwardUnixSocket(channel ssh.Channel, addr string) { - conn, err := net.Dial("unix", addr) - if err != nil { - return - } - - var wg sync.WaitGroup - wg.Add(2) - go func() { - io.Copy(conn, channel) - conn.(*net.UnixConn).CloseWrite() - wg.Done() - }() - go func() { - io.Copy(channel, conn) - channel.CloseWrite() - wg.Done() - }() - - wg.Wait() - conn.Close() - channel.Close() -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/keyring.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/keyring.go deleted file mode 100644 index a6ba06ab3..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/keyring.go +++ /dev/null @@ -1,215 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package agent - -import ( - "bytes" - "crypto/rand" - "crypto/subtle" - "errors" - "fmt" - "sync" - "time" - - "golang.org/x/crypto/ssh" -) - -type privKey struct { - signer ssh.Signer - comment string - expire *time.Time -} - -type keyring struct { - mu sync.Mutex - keys []privKey - - locked bool - passphrase []byte -} - -var errLocked = errors.New("agent: locked") - -// NewKeyring returns an Agent that holds keys in memory. It is safe -// for concurrent use by multiple goroutines. -func NewKeyring() Agent { - return &keyring{} -} - -// RemoveAll removes all identities. -func (r *keyring) RemoveAll() error { - r.mu.Lock() - defer r.mu.Unlock() - if r.locked { - return errLocked - } - - r.keys = nil - return nil -} - -// removeLocked does the actual key removal. The caller must already be holding the -// keyring mutex. -func (r *keyring) removeLocked(want []byte) error { - found := false - for i := 0; i < len(r.keys); { - if bytes.Equal(r.keys[i].signer.PublicKey().Marshal(), want) { - found = true - r.keys[i] = r.keys[len(r.keys)-1] - r.keys = r.keys[:len(r.keys)-1] - continue - } else { - i++ - } - } - - if !found { - return errors.New("agent: key not found") - } - return nil -} - -// Remove removes all identities with the given public key. -func (r *keyring) Remove(key ssh.PublicKey) error { - r.mu.Lock() - defer r.mu.Unlock() - if r.locked { - return errLocked - } - - return r.removeLocked(key.Marshal()) -} - -// Lock locks the agent. Sign and Remove will fail, and List will return an empty list. -func (r *keyring) Lock(passphrase []byte) error { - r.mu.Lock() - defer r.mu.Unlock() - if r.locked { - return errLocked - } - - r.locked = true - r.passphrase = passphrase - return nil -} - -// Unlock undoes the effect of Lock -func (r *keyring) Unlock(passphrase []byte) error { - r.mu.Lock() - defer r.mu.Unlock() - if !r.locked { - return errors.New("agent: not locked") - } - if len(passphrase) != len(r.passphrase) || 1 != subtle.ConstantTimeCompare(passphrase, r.passphrase) { - return fmt.Errorf("agent: incorrect passphrase") - } - - r.locked = false - r.passphrase = nil - return nil -} - -// expireKeysLocked removes expired keys from the keyring. If a key was added -// with a lifetimesecs contraint and seconds >= lifetimesecs seconds have -// ellapsed, it is removed. The caller *must* be holding the keyring mutex. -func (r *keyring) expireKeysLocked() { - for _, k := range r.keys { - if k.expire != nil && time.Now().After(*k.expire) { - r.removeLocked(k.signer.PublicKey().Marshal()) - } - } -} - -// List returns the identities known to the agent. -func (r *keyring) List() ([]*Key, error) { - r.mu.Lock() - defer r.mu.Unlock() - if r.locked { - // section 2.7: locked agents return empty. - return nil, nil - } - - r.expireKeysLocked() - var ids []*Key - for _, k := range r.keys { - pub := k.signer.PublicKey() - ids = append(ids, &Key{ - Format: pub.Type(), - Blob: pub.Marshal(), - Comment: k.comment}) - } - return ids, nil -} - -// Insert adds a private key to the keyring. If a certificate -// is given, that certificate is added as public key. Note that -// any constraints given are ignored. -func (r *keyring) Add(key AddedKey) error { - r.mu.Lock() - defer r.mu.Unlock() - if r.locked { - return errLocked - } - signer, err := ssh.NewSignerFromKey(key.PrivateKey) - - if err != nil { - return err - } - - if cert := key.Certificate; cert != nil { - signer, err = ssh.NewCertSigner(cert, signer) - if err != nil { - return err - } - } - - p := privKey{ - signer: signer, - comment: key.Comment, - } - - if key.LifetimeSecs > 0 { - t := time.Now().Add(time.Duration(key.LifetimeSecs) * time.Second) - p.expire = &t - } - - r.keys = append(r.keys, p) - - return nil -} - -// Sign returns a signature for the data. -func (r *keyring) Sign(key ssh.PublicKey, data []byte) (*ssh.Signature, error) { - r.mu.Lock() - defer r.mu.Unlock() - if r.locked { - return nil, errLocked - } - - r.expireKeysLocked() - wanted := key.Marshal() - for _, k := range r.keys { - if bytes.Equal(k.signer.PublicKey().Marshal(), wanted) { - return k.signer.Sign(rand.Reader, data) - } - } - return nil, errors.New("not found") -} - -// Signers returns signers for all the known keys. -func (r *keyring) Signers() ([]ssh.Signer, error) { - r.mu.Lock() - defer r.mu.Unlock() - if r.locked { - return nil, errLocked - } - - r.expireKeysLocked() - s := make([]ssh.Signer, 0, len(r.keys)) - for _, k := range r.keys { - s = append(s, k.signer) - } - return s, nil -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/keyring_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/keyring_test.go deleted file mode 100644 index e5d50e7e0..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/keyring_test.go +++ /dev/null @@ -1,76 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package agent - -import "testing" - -func addTestKey(t *testing.T, a Agent, keyName string) { - err := a.Add(AddedKey{ - PrivateKey: testPrivateKeys[keyName], - Comment: keyName, - }) - if err != nil { - t.Fatalf("failed to add key %q: %v", keyName, err) - } -} - -func removeTestKey(t *testing.T, a Agent, keyName string) { - err := a.Remove(testPublicKeys[keyName]) - if err != nil { - t.Fatalf("failed to remove key %q: %v", keyName, err) - } -} - -func validateListedKeys(t *testing.T, a Agent, expectedKeys []string) { - listedKeys, err := a.List() - if err != nil { - t.Fatalf("failed to list keys: %v", err) - return - } - actualKeys := make(map[string]bool) - for _, key := range listedKeys { - actualKeys[key.Comment] = true - } - - matchedKeys := make(map[string]bool) - for _, expectedKey := range expectedKeys { - if !actualKeys[expectedKey] { - t.Fatalf("expected key %q, but was not found", expectedKey) - } else { - matchedKeys[expectedKey] = true - } - } - - for actualKey := range actualKeys { - if !matchedKeys[actualKey] { - t.Fatalf("key %q was found, but was not expected", actualKey) - } - } -} - -func TestKeyringAddingAndRemoving(t *testing.T) { - keyNames := []string{"dsa", "ecdsa", "rsa", "user"} - - // add all test private keys - k := NewKeyring() - for _, keyName := range keyNames { - addTestKey(t, k, keyName) - } - validateListedKeys(t, k, keyNames) - - // remove a key in the middle - keyToRemove := keyNames[1] - keyNames = append(keyNames[:1], keyNames[2:]...) - - removeTestKey(t, k, keyToRemove) - validateListedKeys(t, k, keyNames) - - // remove all keys - err := k.RemoveAll() - if err != nil { - t.Fatalf("failed to remove all keys: %v", err) - } - validateListedKeys(t, k, []string{}) -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/server.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/server.go deleted file mode 100644 index 321e48a26..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/server.go +++ /dev/null @@ -1,523 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package agent - -import ( - "crypto/dsa" - "crypto/ecdsa" - "crypto/elliptic" - "crypto/rsa" - "encoding/binary" - "errors" - "fmt" - "io" - "log" - "math/big" - - "golang.org/x/crypto/ed25519" - "golang.org/x/crypto/ssh" -) - -// Server wraps an Agent and uses it to implement the agent side of -// the SSH-agent, wire protocol. -type server struct { - agent Agent -} - -func (s *server) processRequestBytes(reqData []byte) []byte { - rep, err := s.processRequest(reqData) - if err != nil { - if err != errLocked { - // TODO(hanwen): provide better logging interface? - log.Printf("agent %d: %v", reqData[0], err) - } - return []byte{agentFailure} - } - - if err == nil && rep == nil { - return []byte{agentSuccess} - } - - return ssh.Marshal(rep) -} - -func marshalKey(k *Key) []byte { - var record struct { - Blob []byte - Comment string - } - record.Blob = k.Marshal() - record.Comment = k.Comment - - return ssh.Marshal(&record) -} - -// See [PROTOCOL.agent], section 2.5.1. -const agentV1IdentitiesAnswer = 2 - -type agentV1IdentityMsg struct { - Numkeys uint32 `sshtype:"2"` -} - -type agentRemoveIdentityMsg struct { - KeyBlob []byte `sshtype:"18"` -} - -type agentLockMsg struct { - Passphrase []byte `sshtype:"22"` -} - -type agentUnlockMsg struct { - Passphrase []byte `sshtype:"23"` -} - -func (s *server) processRequest(data []byte) (interface{}, error) { - switch data[0] { - case agentRequestV1Identities: - return &agentV1IdentityMsg{0}, nil - - case agentRemoveAllV1Identities: - return nil, nil - - case agentRemoveIdentity: - var req agentRemoveIdentityMsg - if err := ssh.Unmarshal(data, &req); err != nil { - return nil, err - } - - var wk wireKey - if err := ssh.Unmarshal(req.KeyBlob, &wk); err != nil { - return nil, err - } - - return nil, s.agent.Remove(&Key{Format: wk.Format, Blob: req.KeyBlob}) - - case agentRemoveAllIdentities: - return nil, s.agent.RemoveAll() - - case agentLock: - var req agentLockMsg - if err := ssh.Unmarshal(data, &req); err != nil { - return nil, err - } - - return nil, s.agent.Lock(req.Passphrase) - - case agentUnlock: - var req agentUnlockMsg - if err := ssh.Unmarshal(data, &req); err != nil { - return nil, err - } - return nil, s.agent.Unlock(req.Passphrase) - - case agentSignRequest: - var req signRequestAgentMsg - if err := ssh.Unmarshal(data, &req); err != nil { - return nil, err - } - - var wk wireKey - if err := ssh.Unmarshal(req.KeyBlob, &wk); err != nil { - return nil, err - } - - k := &Key{ - Format: wk.Format, - Blob: req.KeyBlob, - } - - sig, err := s.agent.Sign(k, req.Data) // TODO(hanwen): flags. - if err != nil { - return nil, err - } - return &signResponseAgentMsg{SigBlob: ssh.Marshal(sig)}, nil - - case agentRequestIdentities: - keys, err := s.agent.List() - if err != nil { - return nil, err - } - - rep := identitiesAnswerAgentMsg{ - NumKeys: uint32(len(keys)), - } - for _, k := range keys { - rep.Keys = append(rep.Keys, marshalKey(k)...) - } - return rep, nil - - case agentAddIdConstrained, agentAddIdentity: - return nil, s.insertIdentity(data) - } - - return nil, fmt.Errorf("unknown opcode %d", data[0]) -} - -func parseConstraints(constraints []byte) (lifetimeSecs uint32, confirmBeforeUse bool, extensions []ConstraintExtension, err error) { - for len(constraints) != 0 { - switch constraints[0] { - case agentConstrainLifetime: - lifetimeSecs = binary.BigEndian.Uint32(constraints[1:5]) - constraints = constraints[5:] - case agentConstrainConfirm: - confirmBeforeUse = true - constraints = constraints[1:] - case agentConstrainExtension: - var msg constrainExtensionAgentMsg - if err = ssh.Unmarshal(constraints, &msg); err != nil { - return 0, false, nil, err - } - extensions = append(extensions, ConstraintExtension{ - ExtensionName: msg.ExtensionName, - ExtensionDetails: msg.ExtensionDetails, - }) - constraints = msg.Rest - default: - return 0, false, nil, fmt.Errorf("unknown constraint type: %d", constraints[0]) - } - } - return -} - -func setConstraints(key *AddedKey, constraintBytes []byte) error { - lifetimeSecs, confirmBeforeUse, constraintExtensions, err := parseConstraints(constraintBytes) - if err != nil { - return err - } - - key.LifetimeSecs = lifetimeSecs - key.ConfirmBeforeUse = confirmBeforeUse - key.ConstraintExtensions = constraintExtensions - return nil -} - -func parseRSAKey(req []byte) (*AddedKey, error) { - var k rsaKeyMsg - if err := ssh.Unmarshal(req, &k); err != nil { - return nil, err - } - if k.E.BitLen() > 30 { - return nil, errors.New("agent: RSA public exponent too large") - } - priv := &rsa.PrivateKey{ - PublicKey: rsa.PublicKey{ - E: int(k.E.Int64()), - N: k.N, - }, - D: k.D, - Primes: []*big.Int{k.P, k.Q}, - } - priv.Precompute() - - addedKey := &AddedKey{PrivateKey: priv, Comment: k.Comments} - if err := setConstraints(addedKey, k.Constraints); err != nil { - return nil, err - } - return addedKey, nil -} - -func parseEd25519Key(req []byte) (*AddedKey, error) { - var k ed25519KeyMsg - if err := ssh.Unmarshal(req, &k); err != nil { - return nil, err - } - priv := ed25519.PrivateKey(k.Priv) - - addedKey := &AddedKey{PrivateKey: &priv, Comment: k.Comments} - if err := setConstraints(addedKey, k.Constraints); err != nil { - return nil, err - } - return addedKey, nil -} - -func parseDSAKey(req []byte) (*AddedKey, error) { - var k dsaKeyMsg - if err := ssh.Unmarshal(req, &k); err != nil { - return nil, err - } - priv := &dsa.PrivateKey{ - PublicKey: dsa.PublicKey{ - Parameters: dsa.Parameters{ - P: k.P, - Q: k.Q, - G: k.G, - }, - Y: k.Y, - }, - X: k.X, - } - - addedKey := &AddedKey{PrivateKey: priv, Comment: k.Comments} - if err := setConstraints(addedKey, k.Constraints); err != nil { - return nil, err - } - return addedKey, nil -} - -func unmarshalECDSA(curveName string, keyBytes []byte, privScalar *big.Int) (priv *ecdsa.PrivateKey, err error) { - priv = &ecdsa.PrivateKey{ - D: privScalar, - } - - switch curveName { - case "nistp256": - priv.Curve = elliptic.P256() - case "nistp384": - priv.Curve = elliptic.P384() - case "nistp521": - priv.Curve = elliptic.P521() - default: - return nil, fmt.Errorf("agent: unknown curve %q", curveName) - } - - priv.X, priv.Y = elliptic.Unmarshal(priv.Curve, keyBytes) - if priv.X == nil || priv.Y == nil { - return nil, errors.New("agent: point not on curve") - } - - return priv, nil -} - -func parseEd25519Cert(req []byte) (*AddedKey, error) { - var k ed25519CertMsg - if err := ssh.Unmarshal(req, &k); err != nil { - return nil, err - } - pubKey, err := ssh.ParsePublicKey(k.CertBytes) - if err != nil { - return nil, err - } - priv := ed25519.PrivateKey(k.Priv) - cert, ok := pubKey.(*ssh.Certificate) - if !ok { - return nil, errors.New("agent: bad ED25519 certificate") - } - - addedKey := &AddedKey{PrivateKey: &priv, Certificate: cert, Comment: k.Comments} - if err := setConstraints(addedKey, k.Constraints); err != nil { - return nil, err - } - return addedKey, nil -} - -func parseECDSAKey(req []byte) (*AddedKey, error) { - var k ecdsaKeyMsg - if err := ssh.Unmarshal(req, &k); err != nil { - return nil, err - } - - priv, err := unmarshalECDSA(k.Curve, k.KeyBytes, k.D) - if err != nil { - return nil, err - } - - addedKey := &AddedKey{PrivateKey: priv, Comment: k.Comments} - if err := setConstraints(addedKey, k.Constraints); err != nil { - return nil, err - } - return addedKey, nil -} - -func parseRSACert(req []byte) (*AddedKey, error) { - var k rsaCertMsg - if err := ssh.Unmarshal(req, &k); err != nil { - return nil, err - } - - pubKey, err := ssh.ParsePublicKey(k.CertBytes) - if err != nil { - return nil, err - } - - cert, ok := pubKey.(*ssh.Certificate) - if !ok { - return nil, errors.New("agent: bad RSA certificate") - } - - // An RSA publickey as marshaled by rsaPublicKey.Marshal() in keys.go - var rsaPub struct { - Name string - E *big.Int - N *big.Int - } - if err := ssh.Unmarshal(cert.Key.Marshal(), &rsaPub); err != nil { - return nil, fmt.Errorf("agent: Unmarshal failed to parse public key: %v", err) - } - - if rsaPub.E.BitLen() > 30 { - return nil, errors.New("agent: RSA public exponent too large") - } - - priv := rsa.PrivateKey{ - PublicKey: rsa.PublicKey{ - E: int(rsaPub.E.Int64()), - N: rsaPub.N, - }, - D: k.D, - Primes: []*big.Int{k.Q, k.P}, - } - priv.Precompute() - - addedKey := &AddedKey{PrivateKey: &priv, Certificate: cert, Comment: k.Comments} - if err := setConstraints(addedKey, k.Constraints); err != nil { - return nil, err - } - return addedKey, nil -} - -func parseDSACert(req []byte) (*AddedKey, error) { - var k dsaCertMsg - if err := ssh.Unmarshal(req, &k); err != nil { - return nil, err - } - pubKey, err := ssh.ParsePublicKey(k.CertBytes) - if err != nil { - return nil, err - } - cert, ok := pubKey.(*ssh.Certificate) - if !ok { - return nil, errors.New("agent: bad DSA certificate") - } - - // A DSA publickey as marshaled by dsaPublicKey.Marshal() in keys.go - var w struct { - Name string - P, Q, G, Y *big.Int - } - if err := ssh.Unmarshal(cert.Key.Marshal(), &w); err != nil { - return nil, fmt.Errorf("agent: Unmarshal failed to parse public key: %v", err) - } - - priv := &dsa.PrivateKey{ - PublicKey: dsa.PublicKey{ - Parameters: dsa.Parameters{ - P: w.P, - Q: w.Q, - G: w.G, - }, - Y: w.Y, - }, - X: k.X, - } - - addedKey := &AddedKey{PrivateKey: priv, Certificate: cert, Comment: k.Comments} - if err := setConstraints(addedKey, k.Constraints); err != nil { - return nil, err - } - return addedKey, nil -} - -func parseECDSACert(req []byte) (*AddedKey, error) { - var k ecdsaCertMsg - if err := ssh.Unmarshal(req, &k); err != nil { - return nil, err - } - - pubKey, err := ssh.ParsePublicKey(k.CertBytes) - if err != nil { - return nil, err - } - cert, ok := pubKey.(*ssh.Certificate) - if !ok { - return nil, errors.New("agent: bad ECDSA certificate") - } - - // An ECDSA publickey as marshaled by ecdsaPublicKey.Marshal() in keys.go - var ecdsaPub struct { - Name string - ID string - Key []byte - } - if err := ssh.Unmarshal(cert.Key.Marshal(), &ecdsaPub); err != nil { - return nil, err - } - - priv, err := unmarshalECDSA(ecdsaPub.ID, ecdsaPub.Key, k.D) - if err != nil { - return nil, err - } - - addedKey := &AddedKey{PrivateKey: priv, Certificate: cert, Comment: k.Comments} - if err := setConstraints(addedKey, k.Constraints); err != nil { - return nil, err - } - return addedKey, nil -} - -func (s *server) insertIdentity(req []byte) error { - var record struct { - Type string `sshtype:"17|25"` - Rest []byte `ssh:"rest"` - } - - if err := ssh.Unmarshal(req, &record); err != nil { - return err - } - - var addedKey *AddedKey - var err error - - switch record.Type { - case ssh.KeyAlgoRSA: - addedKey, err = parseRSAKey(req) - case ssh.KeyAlgoDSA: - addedKey, err = parseDSAKey(req) - case ssh.KeyAlgoECDSA256, ssh.KeyAlgoECDSA384, ssh.KeyAlgoECDSA521: - addedKey, err = parseECDSAKey(req) - case ssh.KeyAlgoED25519: - addedKey, err = parseEd25519Key(req) - case ssh.CertAlgoRSAv01: - addedKey, err = parseRSACert(req) - case ssh.CertAlgoDSAv01: - addedKey, err = parseDSACert(req) - case ssh.CertAlgoECDSA256v01, ssh.CertAlgoECDSA384v01, ssh.CertAlgoECDSA521v01: - addedKey, err = parseECDSACert(req) - case ssh.CertAlgoED25519v01: - addedKey, err = parseEd25519Cert(req) - default: - return fmt.Errorf("agent: not implemented: %q", record.Type) - } - - if err != nil { - return err - } - return s.agent.Add(*addedKey) -} - -// ServeAgent serves the agent protocol on the given connection. It -// returns when an I/O error occurs. -func ServeAgent(agent Agent, c io.ReadWriter) error { - s := &server{agent} - - var length [4]byte - for { - if _, err := io.ReadFull(c, length[:]); err != nil { - return err - } - l := binary.BigEndian.Uint32(length[:]) - if l > maxAgentResponseBytes { - // We also cap requests. - return fmt.Errorf("agent: request too large: %d", l) - } - - req := make([]byte, l) - if _, err := io.ReadFull(c, req); err != nil { - return err - } - - repData := s.processRequestBytes(req) - if len(repData) > maxAgentResponseBytes { - return fmt.Errorf("agent: reply too large: %d bytes", len(repData)) - } - - binary.BigEndian.PutUint32(length[:], uint32(len(repData))) - if _, err := c.Write(length[:]); err != nil { - return err - } - if _, err := c.Write(repData); err != nil { - return err - } - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/server_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/server_test.go deleted file mode 100644 index 038018ebb..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/server_test.go +++ /dev/null @@ -1,259 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package agent - -import ( - "crypto" - "crypto/rand" - "fmt" - pseudorand "math/rand" - "reflect" - "strings" - "testing" - - "golang.org/x/crypto/ssh" -) - -func TestServer(t *testing.T) { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - client := NewClient(c1) - - go ServeAgent(NewKeyring(), c2) - - testAgentInterface(t, client, testPrivateKeys["rsa"], nil, 0) -} - -func TestLockServer(t *testing.T) { - testLockAgent(NewKeyring(), t) -} - -func TestSetupForwardAgent(t *testing.T) { - a, b, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - - defer a.Close() - defer b.Close() - - _, socket, cleanup := startOpenSSHAgent(t) - defer cleanup() - - serverConf := ssh.ServerConfig{ - NoClientAuth: true, - } - serverConf.AddHostKey(testSigners["rsa"]) - incoming := make(chan *ssh.ServerConn, 1) - go func() { - conn, _, _, err := ssh.NewServerConn(a, &serverConf) - if err != nil { - t.Fatalf("Server: %v", err) - } - incoming <- conn - }() - - conf := ssh.ClientConfig{ - HostKeyCallback: ssh.InsecureIgnoreHostKey(), - } - conn, chans, reqs, err := ssh.NewClientConn(b, "", &conf) - if err != nil { - t.Fatalf("NewClientConn: %v", err) - } - client := ssh.NewClient(conn, chans, reqs) - - if err := ForwardToRemote(client, socket); err != nil { - t.Fatalf("SetupForwardAgent: %v", err) - } - - server := <-incoming - ch, reqs, err := server.OpenChannel(channelType, nil) - if err != nil { - t.Fatalf("OpenChannel(%q): %v", channelType, err) - } - go ssh.DiscardRequests(reqs) - - agentClient := NewClient(ch) - testAgentInterface(t, agentClient, testPrivateKeys["rsa"], nil, 0) - conn.Close() -} - -func TestV1ProtocolMessages(t *testing.T) { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - c := NewClient(c1) - - go ServeAgent(NewKeyring(), c2) - - testV1ProtocolMessages(t, c.(*client)) -} - -func testV1ProtocolMessages(t *testing.T, c *client) { - reply, err := c.call([]byte{agentRequestV1Identities}) - if err != nil { - t.Fatalf("v1 request all failed: %v", err) - } - if msg, ok := reply.(*agentV1IdentityMsg); !ok || msg.Numkeys != 0 { - t.Fatalf("invalid request all response: %#v", reply) - } - - reply, err = c.call([]byte{agentRemoveAllV1Identities}) - if err != nil { - t.Fatalf("v1 remove all failed: %v", err) - } - if _, ok := reply.(*successAgentMsg); !ok { - t.Fatalf("invalid remove all response: %#v", reply) - } -} - -func verifyKey(sshAgent Agent) error { - keys, err := sshAgent.List() - if err != nil { - return fmt.Errorf("listing keys: %v", err) - } - - if len(keys) != 1 { - return fmt.Errorf("bad number of keys found. expected 1, got %d", len(keys)) - } - - buf := make([]byte, 128) - if _, err := rand.Read(buf); err != nil { - return fmt.Errorf("rand: %v", err) - } - - sig, err := sshAgent.Sign(keys[0], buf) - if err != nil { - return fmt.Errorf("sign: %v", err) - } - - if err := keys[0].Verify(buf, sig); err != nil { - return fmt.Errorf("verify: %v", err) - } - return nil -} - -func addKeyToAgent(key crypto.PrivateKey) error { - sshAgent := NewKeyring() - if err := sshAgent.Add(AddedKey{PrivateKey: key}); err != nil { - return fmt.Errorf("add: %v", err) - } - return verifyKey(sshAgent) -} - -func TestKeyTypes(t *testing.T) { - for k, v := range testPrivateKeys { - if err := addKeyToAgent(v); err != nil { - t.Errorf("error adding key type %s, %v", k, err) - } - if err := addCertToAgentSock(v, nil); err != nil { - t.Errorf("error adding key type %s, %v", k, err) - } - } -} - -func addCertToAgentSock(key crypto.PrivateKey, cert *ssh.Certificate) error { - a, b, err := netPipe() - if err != nil { - return err - } - agentServer := NewKeyring() - go ServeAgent(agentServer, a) - - agentClient := NewClient(b) - if err := agentClient.Add(AddedKey{PrivateKey: key, Certificate: cert}); err != nil { - return fmt.Errorf("add: %v", err) - } - return verifyKey(agentClient) -} - -func addCertToAgent(key crypto.PrivateKey, cert *ssh.Certificate) error { - sshAgent := NewKeyring() - if err := sshAgent.Add(AddedKey{PrivateKey: key, Certificate: cert}); err != nil { - return fmt.Errorf("add: %v", err) - } - return verifyKey(sshAgent) -} - -func TestCertTypes(t *testing.T) { - for keyType, key := range testPublicKeys { - cert := &ssh.Certificate{ - ValidPrincipals: []string{"gopher1"}, - ValidAfter: 0, - ValidBefore: ssh.CertTimeInfinity, - Key: key, - Serial: 1, - CertType: ssh.UserCert, - SignatureKey: testPublicKeys["rsa"], - Permissions: ssh.Permissions{ - CriticalOptions: map[string]string{}, - Extensions: map[string]string{}, - }, - } - if err := cert.SignCert(rand.Reader, testSigners["rsa"]); err != nil { - t.Fatalf("signcert: %v", err) - } - if err := addCertToAgent(testPrivateKeys[keyType], cert); err != nil { - t.Fatalf("%v", err) - } - if err := addCertToAgentSock(testPrivateKeys[keyType], cert); err != nil { - t.Fatalf("%v", err) - } - } -} - -func TestParseConstraints(t *testing.T) { - // Test LifetimeSecs - var msg = constrainLifetimeAgentMsg{pseudorand.Uint32()} - lifetimeSecs, _, _, err := parseConstraints(ssh.Marshal(msg)) - if err != nil { - t.Fatalf("parseConstraints: %v", err) - } - if lifetimeSecs != msg.LifetimeSecs { - t.Errorf("got lifetime %v, want %v", lifetimeSecs, msg.LifetimeSecs) - } - - // Test ConfirmBeforeUse - _, confirmBeforeUse, _, err := parseConstraints([]byte{agentConstrainConfirm}) - if err != nil { - t.Fatalf("%v", err) - } - if !confirmBeforeUse { - t.Error("got comfirmBeforeUse == false") - } - - // Test ConstraintExtensions - var data []byte - var expect []ConstraintExtension - for i := 0; i < 10; i++ { - var ext = ConstraintExtension{ - ExtensionName: fmt.Sprintf("name%d", i), - ExtensionDetails: []byte(fmt.Sprintf("details: %d", i)), - } - expect = append(expect, ext) - data = append(data, agentConstrainExtension) - data = append(data, ssh.Marshal(ext)...) - } - _, _, extensions, err := parseConstraints(data) - if err != nil { - t.Fatalf("%v", err) - } - if !reflect.DeepEqual(expect, extensions) { - t.Errorf("got extension %v, want %v", extensions, expect) - } - - // Test Unknown Constraint - _, _, _, err = parseConstraints([]byte{128}) - if err == nil || !strings.Contains(err.Error(), "unknown constraint") { - t.Errorf("unexpected error: %v", err) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/testdata_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/testdata_test.go deleted file mode 100644 index cc42a87cb..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/agent/testdata_test.go +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// IMPLEMENTATION NOTE: To avoid a package loop, this file is in three places: -// ssh/, ssh/agent, and ssh/test/. It should be kept in sync across all three -// instances. - -package agent - -import ( - "crypto/rand" - "fmt" - - "golang.org/x/crypto/ssh" - "golang.org/x/crypto/ssh/testdata" -) - -var ( - testPrivateKeys map[string]interface{} - testSigners map[string]ssh.Signer - testPublicKeys map[string]ssh.PublicKey -) - -func init() { - var err error - - n := len(testdata.PEMBytes) - testPrivateKeys = make(map[string]interface{}, n) - testSigners = make(map[string]ssh.Signer, n) - testPublicKeys = make(map[string]ssh.PublicKey, n) - for t, k := range testdata.PEMBytes { - testPrivateKeys[t], err = ssh.ParseRawPrivateKey(k) - if err != nil { - panic(fmt.Sprintf("Unable to parse test key %s: %v", t, err)) - } - testSigners[t], err = ssh.NewSignerFromKey(testPrivateKeys[t]) - if err != nil { - panic(fmt.Sprintf("Unable to create signer for test key %s: %v", t, err)) - } - testPublicKeys[t] = testSigners[t].PublicKey() - } - - // Create a cert and sign it for use in tests. - testCert := &ssh.Certificate{ - Nonce: []byte{}, // To pass reflect.DeepEqual after marshal & parse, this must be non-nil - ValidPrincipals: []string{"gopher1", "gopher2"}, // increases test coverage - ValidAfter: 0, // unix epoch - ValidBefore: ssh.CertTimeInfinity, // The end of currently representable time. - Reserved: []byte{}, // To pass reflect.DeepEqual after marshal & parse, this must be non-nil - Key: testPublicKeys["ecdsa"], - SignatureKey: testPublicKeys["rsa"], - Permissions: ssh.Permissions{ - CriticalOptions: map[string]string{}, - Extensions: map[string]string{}, - }, - } - testCert.SignCert(rand.Reader, testSigners["rsa"]) - testPrivateKeys["cert"] = testPrivateKeys["ecdsa"] - testSigners["cert"], err = ssh.NewCertSigner(testCert, testSigners["ecdsa"]) - if err != nil { - panic(fmt.Sprintf("Unable to create certificate signer: %v", err)) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/benchmark_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/benchmark_test.go deleted file mode 100644 index d9f7eb9b6..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/benchmark_test.go +++ /dev/null @@ -1,122 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "errors" - "io" - "net" - "testing" -) - -type server struct { - *ServerConn - chans <-chan NewChannel -} - -func newServer(c net.Conn, conf *ServerConfig) (*server, error) { - sconn, chans, reqs, err := NewServerConn(c, conf) - if err != nil { - return nil, err - } - go DiscardRequests(reqs) - return &server{sconn, chans}, nil -} - -func (s *server) Accept() (NewChannel, error) { - n, ok := <-s.chans - if !ok { - return nil, io.EOF - } - return n, nil -} - -func sshPipe() (Conn, *server, error) { - c1, c2, err := netPipe() - if err != nil { - return nil, nil, err - } - - clientConf := ClientConfig{ - User: "user", - } - serverConf := ServerConfig{ - NoClientAuth: true, - } - serverConf.AddHostKey(testSigners["ecdsa"]) - done := make(chan *server, 1) - go func() { - server, err := newServer(c2, &serverConf) - if err != nil { - done <- nil - } - done <- server - }() - - client, _, reqs, err := NewClientConn(c1, "", &clientConf) - if err != nil { - return nil, nil, err - } - - server := <-done - if server == nil { - return nil, nil, errors.New("server handshake failed.") - } - go DiscardRequests(reqs) - - return client, server, nil -} - -func BenchmarkEndToEnd(b *testing.B) { - b.StopTimer() - - client, server, err := sshPipe() - if err != nil { - b.Fatalf("sshPipe: %v", err) - } - - defer client.Close() - defer server.Close() - - size := (1 << 20) - input := make([]byte, size) - output := make([]byte, size) - b.SetBytes(int64(size)) - done := make(chan int, 1) - - go func() { - newCh, err := server.Accept() - if err != nil { - b.Fatalf("Client: %v", err) - } - ch, incoming, err := newCh.Accept() - go DiscardRequests(incoming) - for i := 0; i < b.N; i++ { - if _, err := io.ReadFull(ch, output); err != nil { - b.Fatalf("ReadFull: %v", err) - } - } - ch.Close() - done <- 1 - }() - - ch, in, err := client.OpenChannel("speed", nil) - if err != nil { - b.Fatalf("OpenChannel: %v", err) - } - go DiscardRequests(in) - - b.ResetTimer() - b.StartTimer() - for i := 0; i < b.N; i++ { - if _, err := ch.Write(input); err != nil { - b.Fatalf("WriteFull: %v", err) - } - } - ch.Close() - b.StopTimer() - - <-done -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/buffer.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/buffer.go deleted file mode 100644 index 1ab07d078..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/buffer.go +++ /dev/null @@ -1,97 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "io" - "sync" -) - -// buffer provides a linked list buffer for data exchange -// between producer and consumer. Theoretically the buffer is -// of unlimited capacity as it does no allocation of its own. -type buffer struct { - // protects concurrent access to head, tail and closed - *sync.Cond - - head *element // the buffer that will be read first - tail *element // the buffer that will be read last - - closed bool -} - -// An element represents a single link in a linked list. -type element struct { - buf []byte - next *element -} - -// newBuffer returns an empty buffer that is not closed. -func newBuffer() *buffer { - e := new(element) - b := &buffer{ - Cond: newCond(), - head: e, - tail: e, - } - return b -} - -// write makes buf available for Read to receive. -// buf must not be modified after the call to write. -func (b *buffer) write(buf []byte) { - b.Cond.L.Lock() - e := &element{buf: buf} - b.tail.next = e - b.tail = e - b.Cond.Signal() - b.Cond.L.Unlock() -} - -// eof closes the buffer. Reads from the buffer once all -// the data has been consumed will receive io.EOF. -func (b *buffer) eof() { - b.Cond.L.Lock() - b.closed = true - b.Cond.Signal() - b.Cond.L.Unlock() -} - -// Read reads data from the internal buffer in buf. Reads will block -// if no data is available, or until the buffer is closed. -func (b *buffer) Read(buf []byte) (n int, err error) { - b.Cond.L.Lock() - defer b.Cond.L.Unlock() - - for len(buf) > 0 { - // if there is data in b.head, copy it - if len(b.head.buf) > 0 { - r := copy(buf, b.head.buf) - buf, b.head.buf = buf[r:], b.head.buf[r:] - n += r - continue - } - // if there is a next buffer, make it the head - if len(b.head.buf) == 0 && b.head != b.tail { - b.head = b.head.next - continue - } - - // if at least one byte has been copied, return - if n > 0 { - break - } - - // if nothing was read, and there is nothing outstanding - // check to see if the buffer is closed. - if b.closed { - err = io.EOF - break - } - // out of buffers, wait for producer - b.Cond.Wait() - } - return -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/buffer_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/buffer_test.go deleted file mode 100644 index d5781cb3d..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/buffer_test.go +++ /dev/null @@ -1,87 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "io" - "testing" -) - -var alphabet = []byte("abcdefghijklmnopqrstuvwxyz") - -func TestBufferReadwrite(t *testing.T) { - b := newBuffer() - b.write(alphabet[:10]) - r, _ := b.Read(make([]byte, 10)) - if r != 10 { - t.Fatalf("Expected written == read == 10, written: 10, read %d", r) - } - - b = newBuffer() - b.write(alphabet[:5]) - r, _ = b.Read(make([]byte, 10)) - if r != 5 { - t.Fatalf("Expected written == read == 5, written: 5, read %d", r) - } - - b = newBuffer() - b.write(alphabet[:10]) - r, _ = b.Read(make([]byte, 5)) - if r != 5 { - t.Fatalf("Expected written == 10, read == 5, written: 10, read %d", r) - } - - b = newBuffer() - b.write(alphabet[:5]) - b.write(alphabet[5:15]) - r, _ = b.Read(make([]byte, 10)) - r2, _ := b.Read(make([]byte, 10)) - if r != 10 || r2 != 5 || 15 != r+r2 { - t.Fatal("Expected written == read == 15") - } -} - -func TestBufferClose(t *testing.T) { - b := newBuffer() - b.write(alphabet[:10]) - b.eof() - _, err := b.Read(make([]byte, 5)) - if err != nil { - t.Fatal("expected read of 5 to not return EOF") - } - b = newBuffer() - b.write(alphabet[:10]) - b.eof() - r, err := b.Read(make([]byte, 5)) - r2, err2 := b.Read(make([]byte, 10)) - if r != 5 || r2 != 5 || err != nil || err2 != nil { - t.Fatal("expected reads of 5 and 5") - } - - b = newBuffer() - b.write(alphabet[:10]) - b.eof() - r, err = b.Read(make([]byte, 5)) - r2, err2 = b.Read(make([]byte, 10)) - r3, err3 := b.Read(make([]byte, 10)) - if r != 5 || r2 != 5 || r3 != 0 || err != nil || err2 != nil || err3 != io.EOF { - t.Fatal("expected reads of 5 and 5 and 0, with EOF") - } - - b = newBuffer() - b.write(make([]byte, 5)) - b.write(make([]byte, 10)) - b.eof() - r, err = b.Read(make([]byte, 9)) - r2, err2 = b.Read(make([]byte, 3)) - r3, err3 = b.Read(make([]byte, 3)) - r4, err4 := b.Read(make([]byte, 10)) - if err != nil || err2 != nil || err3 != nil || err4 != io.EOF { - t.Fatalf("Expected EOF on forth read only, err=%v, err2=%v, err3=%v, err4=%v", err, err2, err3, err4) - } - if r != 9 || r2 != 3 || r3 != 3 || r4 != 0 { - t.Fatal("Expected written == read == 15", r, r2, r3, r4) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/certs.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/certs.go deleted file mode 100644 index b1f022078..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/certs.go +++ /dev/null @@ -1,519 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "errors" - "fmt" - "io" - "net" - "sort" - "time" -) - -// These constants from [PROTOCOL.certkeys] represent the algorithm names -// for certificate types supported by this package. -const ( - CertAlgoRSAv01 = "ssh-rsa-cert-v01@openssh.com" - CertAlgoDSAv01 = "ssh-dss-cert-v01@openssh.com" - CertAlgoECDSA256v01 = "ecdsa-sha2-nistp256-cert-v01@openssh.com" - CertAlgoECDSA384v01 = "ecdsa-sha2-nistp384-cert-v01@openssh.com" - CertAlgoECDSA521v01 = "ecdsa-sha2-nistp521-cert-v01@openssh.com" - CertAlgoED25519v01 = "ssh-ed25519-cert-v01@openssh.com" -) - -// Certificate types distinguish between host and user -// certificates. The values can be set in the CertType field of -// Certificate. -const ( - UserCert = 1 - HostCert = 2 -) - -// Signature represents a cryptographic signature. -type Signature struct { - Format string - Blob []byte -} - -// CertTimeInfinity can be used for OpenSSHCertV01.ValidBefore to indicate that -// a certificate does not expire. -const CertTimeInfinity = 1<<64 - 1 - -// An Certificate represents an OpenSSH certificate as defined in -// [PROTOCOL.certkeys]?rev=1.8. -type Certificate struct { - Nonce []byte - Key PublicKey - Serial uint64 - CertType uint32 - KeyId string - ValidPrincipals []string - ValidAfter uint64 - ValidBefore uint64 - Permissions - Reserved []byte - SignatureKey PublicKey - Signature *Signature -} - -// genericCertData holds the key-independent part of the certificate data. -// Overall, certificates contain an nonce, public key fields and -// key-independent fields. -type genericCertData struct { - Serial uint64 - CertType uint32 - KeyId string - ValidPrincipals []byte - ValidAfter uint64 - ValidBefore uint64 - CriticalOptions []byte - Extensions []byte - Reserved []byte - SignatureKey []byte - Signature []byte -} - -func marshalStringList(namelist []string) []byte { - var to []byte - for _, name := range namelist { - s := struct{ N string }{name} - to = append(to, Marshal(&s)...) - } - return to -} - -type optionsTuple struct { - Key string - Value []byte -} - -type optionsTupleValue struct { - Value string -} - -// serialize a map of critical options or extensions -// issue #10569 - per [PROTOCOL.certkeys] and SSH implementation, -// we need two length prefixes for a non-empty string value -func marshalTuples(tups map[string]string) []byte { - keys := make([]string, 0, len(tups)) - for key := range tups { - keys = append(keys, key) - } - sort.Strings(keys) - - var ret []byte - for _, key := range keys { - s := optionsTuple{Key: key} - if value := tups[key]; len(value) > 0 { - s.Value = Marshal(&optionsTupleValue{value}) - } - ret = append(ret, Marshal(&s)...) - } - return ret -} - -// issue #10569 - per [PROTOCOL.certkeys] and SSH implementation, -// we need two length prefixes for a non-empty option value -func parseTuples(in []byte) (map[string]string, error) { - tups := map[string]string{} - var lastKey string - var haveLastKey bool - - for len(in) > 0 { - var key, val, extra []byte - var ok bool - - if key, in, ok = parseString(in); !ok { - return nil, errShortRead - } - keyStr := string(key) - // according to [PROTOCOL.certkeys], the names must be in - // lexical order. - if haveLastKey && keyStr <= lastKey { - return nil, fmt.Errorf("ssh: certificate options are not in lexical order") - } - lastKey, haveLastKey = keyStr, true - // the next field is a data field, which if non-empty has a string embedded - if val, in, ok = parseString(in); !ok { - return nil, errShortRead - } - if len(val) > 0 { - val, extra, ok = parseString(val) - if !ok { - return nil, errShortRead - } - if len(extra) > 0 { - return nil, fmt.Errorf("ssh: unexpected trailing data after certificate option value") - } - tups[keyStr] = string(val) - } else { - tups[keyStr] = "" - } - } - return tups, nil -} - -func parseCert(in []byte, privAlgo string) (*Certificate, error) { - nonce, rest, ok := parseString(in) - if !ok { - return nil, errShortRead - } - - key, rest, err := parsePubKey(rest, privAlgo) - if err != nil { - return nil, err - } - - var g genericCertData - if err := Unmarshal(rest, &g); err != nil { - return nil, err - } - - c := &Certificate{ - Nonce: nonce, - Key: key, - Serial: g.Serial, - CertType: g.CertType, - KeyId: g.KeyId, - ValidAfter: g.ValidAfter, - ValidBefore: g.ValidBefore, - } - - for principals := g.ValidPrincipals; len(principals) > 0; { - principal, rest, ok := parseString(principals) - if !ok { - return nil, errShortRead - } - c.ValidPrincipals = append(c.ValidPrincipals, string(principal)) - principals = rest - } - - c.CriticalOptions, err = parseTuples(g.CriticalOptions) - if err != nil { - return nil, err - } - c.Extensions, err = parseTuples(g.Extensions) - if err != nil { - return nil, err - } - c.Reserved = g.Reserved - k, err := ParsePublicKey(g.SignatureKey) - if err != nil { - return nil, err - } - - c.SignatureKey = k - c.Signature, rest, ok = parseSignatureBody(g.Signature) - if !ok || len(rest) > 0 { - return nil, errors.New("ssh: signature parse error") - } - - return c, nil -} - -type openSSHCertSigner struct { - pub *Certificate - signer Signer -} - -// NewCertSigner returns a Signer that signs with the given Certificate, whose -// private key is held by signer. It returns an error if the public key in cert -// doesn't match the key used by signer. -func NewCertSigner(cert *Certificate, signer Signer) (Signer, error) { - if bytes.Compare(cert.Key.Marshal(), signer.PublicKey().Marshal()) != 0 { - return nil, errors.New("ssh: signer and cert have different public key") - } - - return &openSSHCertSigner{cert, signer}, nil -} - -func (s *openSSHCertSigner) Sign(rand io.Reader, data []byte) (*Signature, error) { - return s.signer.Sign(rand, data) -} - -func (s *openSSHCertSigner) PublicKey() PublicKey { - return s.pub -} - -const sourceAddressCriticalOption = "source-address" - -// CertChecker does the work of verifying a certificate. Its methods -// can be plugged into ClientConfig.HostKeyCallback and -// ServerConfig.PublicKeyCallback. For the CertChecker to work, -// minimally, the IsAuthority callback should be set. -type CertChecker struct { - // SupportedCriticalOptions lists the CriticalOptions that the - // server application layer understands. These are only used - // for user certificates. - SupportedCriticalOptions []string - - // IsUserAuthority should return true if the key is recognized as an - // authority for the given user certificate. This allows for - // certificates to be signed by other certificates. This must be set - // if this CertChecker will be checking user certificates. - IsUserAuthority func(auth PublicKey) bool - - // IsHostAuthority should report whether the key is recognized as - // an authority for this host. This allows for certificates to be - // signed by other keys, and for those other keys to only be valid - // signers for particular hostnames. This must be set if this - // CertChecker will be checking host certificates. - IsHostAuthority func(auth PublicKey, address string) bool - - // Clock is used for verifying time stamps. If nil, time.Now - // is used. - Clock func() time.Time - - // UserKeyFallback is called when CertChecker.Authenticate encounters a - // public key that is not a certificate. It must implement validation - // of user keys or else, if nil, all such keys are rejected. - UserKeyFallback func(conn ConnMetadata, key PublicKey) (*Permissions, error) - - // HostKeyFallback is called when CertChecker.CheckHostKey encounters a - // public key that is not a certificate. It must implement host key - // validation or else, if nil, all such keys are rejected. - HostKeyFallback HostKeyCallback - - // IsRevoked is called for each certificate so that revocation checking - // can be implemented. It should return true if the given certificate - // is revoked and false otherwise. If nil, no certificates are - // considered to have been revoked. - IsRevoked func(cert *Certificate) bool -} - -// CheckHostKey checks a host key certificate. This method can be -// plugged into ClientConfig.HostKeyCallback. -func (c *CertChecker) CheckHostKey(addr string, remote net.Addr, key PublicKey) error { - cert, ok := key.(*Certificate) - if !ok { - if c.HostKeyFallback != nil { - return c.HostKeyFallback(addr, remote, key) - } - return errors.New("ssh: non-certificate host key") - } - if cert.CertType != HostCert { - return fmt.Errorf("ssh: certificate presented as a host key has type %d", cert.CertType) - } - if !c.IsHostAuthority(cert.SignatureKey, addr) { - return fmt.Errorf("ssh: no authorities for hostname: %v", addr) - } - - hostname, _, err := net.SplitHostPort(addr) - if err != nil { - return err - } - - // Pass hostname only as principal for host certificates (consistent with OpenSSH) - return c.CheckCert(hostname, cert) -} - -// Authenticate checks a user certificate. Authenticate can be used as -// a value for ServerConfig.PublicKeyCallback. -func (c *CertChecker) Authenticate(conn ConnMetadata, pubKey PublicKey) (*Permissions, error) { - cert, ok := pubKey.(*Certificate) - if !ok { - if c.UserKeyFallback != nil { - return c.UserKeyFallback(conn, pubKey) - } - return nil, errors.New("ssh: normal key pairs not accepted") - } - - if cert.CertType != UserCert { - return nil, fmt.Errorf("ssh: cert has type %d", cert.CertType) - } - if !c.IsUserAuthority(cert.SignatureKey) { - return nil, fmt.Errorf("ssh: certificate signed by unrecognized authority") - } - - if err := c.CheckCert(conn.User(), cert); err != nil { - return nil, err - } - - return &cert.Permissions, nil -} - -// CheckCert checks CriticalOptions, ValidPrincipals, revocation, timestamp and -// the signature of the certificate. -func (c *CertChecker) CheckCert(principal string, cert *Certificate) error { - if c.IsRevoked != nil && c.IsRevoked(cert) { - return fmt.Errorf("ssh: certicate serial %d revoked", cert.Serial) - } - - for opt, _ := range cert.CriticalOptions { - // sourceAddressCriticalOption will be enforced by - // serverAuthenticate - if opt == sourceAddressCriticalOption { - continue - } - - found := false - for _, supp := range c.SupportedCriticalOptions { - if supp == opt { - found = true - break - } - } - if !found { - return fmt.Errorf("ssh: unsupported critical option %q in certificate", opt) - } - } - - if len(cert.ValidPrincipals) > 0 { - // By default, certs are valid for all users/hosts. - found := false - for _, p := range cert.ValidPrincipals { - if p == principal { - found = true - break - } - } - if !found { - return fmt.Errorf("ssh: principal %q not in the set of valid principals for given certificate: %q", principal, cert.ValidPrincipals) - } - } - - clock := c.Clock - if clock == nil { - clock = time.Now - } - - unixNow := clock().Unix() - if after := int64(cert.ValidAfter); after < 0 || unixNow < int64(cert.ValidAfter) { - return fmt.Errorf("ssh: cert is not yet valid") - } - if before := int64(cert.ValidBefore); cert.ValidBefore != uint64(CertTimeInfinity) && (unixNow >= before || before < 0) { - return fmt.Errorf("ssh: cert has expired") - } - if err := cert.SignatureKey.Verify(cert.bytesForSigning(), cert.Signature); err != nil { - return fmt.Errorf("ssh: certificate signature does not verify") - } - - return nil -} - -// SignCert sets c.SignatureKey to the authority's public key and stores a -// Signature, by authority, in the certificate. -func (c *Certificate) SignCert(rand io.Reader, authority Signer) error { - c.Nonce = make([]byte, 32) - if _, err := io.ReadFull(rand, c.Nonce); err != nil { - return err - } - c.SignatureKey = authority.PublicKey() - - sig, err := authority.Sign(rand, c.bytesForSigning()) - if err != nil { - return err - } - c.Signature = sig - return nil -} - -var certAlgoNames = map[string]string{ - KeyAlgoRSA: CertAlgoRSAv01, - KeyAlgoDSA: CertAlgoDSAv01, - KeyAlgoECDSA256: CertAlgoECDSA256v01, - KeyAlgoECDSA384: CertAlgoECDSA384v01, - KeyAlgoECDSA521: CertAlgoECDSA521v01, - KeyAlgoED25519: CertAlgoED25519v01, -} - -// certToPrivAlgo returns the underlying algorithm for a certificate algorithm. -// Panics if a non-certificate algorithm is passed. -func certToPrivAlgo(algo string) string { - for privAlgo, pubAlgo := range certAlgoNames { - if pubAlgo == algo { - return privAlgo - } - } - panic("unknown cert algorithm") -} - -func (cert *Certificate) bytesForSigning() []byte { - c2 := *cert - c2.Signature = nil - out := c2.Marshal() - // Drop trailing signature length. - return out[:len(out)-4] -} - -// Marshal serializes c into OpenSSH's wire format. It is part of the -// PublicKey interface. -func (c *Certificate) Marshal() []byte { - generic := genericCertData{ - Serial: c.Serial, - CertType: c.CertType, - KeyId: c.KeyId, - ValidPrincipals: marshalStringList(c.ValidPrincipals), - ValidAfter: uint64(c.ValidAfter), - ValidBefore: uint64(c.ValidBefore), - CriticalOptions: marshalTuples(c.CriticalOptions), - Extensions: marshalTuples(c.Extensions), - Reserved: c.Reserved, - SignatureKey: c.SignatureKey.Marshal(), - } - if c.Signature != nil { - generic.Signature = Marshal(c.Signature) - } - genericBytes := Marshal(&generic) - keyBytes := c.Key.Marshal() - _, keyBytes, _ = parseString(keyBytes) - prefix := Marshal(&struct { - Name string - Nonce []byte - Key []byte `ssh:"rest"` - }{c.Type(), c.Nonce, keyBytes}) - - result := make([]byte, 0, len(prefix)+len(genericBytes)) - result = append(result, prefix...) - result = append(result, genericBytes...) - return result -} - -// Type returns the key name. It is part of the PublicKey interface. -func (c *Certificate) Type() string { - algo, ok := certAlgoNames[c.Key.Type()] - if !ok { - panic("unknown cert key type " + c.Key.Type()) - } - return algo -} - -// Verify verifies a signature against the certificate's public -// key. It is part of the PublicKey interface. -func (c *Certificate) Verify(data []byte, sig *Signature) error { - return c.Key.Verify(data, sig) -} - -func parseSignatureBody(in []byte) (out *Signature, rest []byte, ok bool) { - format, in, ok := parseString(in) - if !ok { - return - } - - out = &Signature{ - Format: string(format), - } - - if out.Blob, in, ok = parseString(in); !ok { - return - } - - return out, in, ok -} - -func parseSignature(in []byte) (out *Signature, rest []byte, ok bool) { - sigBytes, rest, ok := parseString(in) - if !ok { - return - } - - out, trailing, ok := parseSignatureBody(sigBytes) - if !ok || len(trailing) > 0 { - return nil, nil, false - } - return -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/certs_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/certs_test.go deleted file mode 100644 index 0200531f4..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/certs_test.go +++ /dev/null @@ -1,222 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "crypto/rand" - "reflect" - "testing" - "time" -) - -// Cert generated by ssh-keygen 6.0p1 Debian-4. -// % ssh-keygen -s ca-key -I test user-key -const exampleSSHCert = `ssh-rsa-cert-v01@openssh.com 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` - -func TestParseCert(t *testing.T) { - authKeyBytes := []byte(exampleSSHCert) - - key, _, _, rest, err := ParseAuthorizedKey(authKeyBytes) - if err != nil { - t.Fatalf("ParseAuthorizedKey: %v", err) - } - if len(rest) > 0 { - t.Errorf("rest: got %q, want empty", rest) - } - - if _, ok := key.(*Certificate); !ok { - t.Fatalf("got %v (%T), want *Certificate", key, key) - } - - marshaled := MarshalAuthorizedKey(key) - // Before comparison, remove the trailing newline that - // MarshalAuthorizedKey adds. - marshaled = marshaled[:len(marshaled)-1] - if !bytes.Equal(authKeyBytes, marshaled) { - t.Errorf("marshaled certificate does not match original: got %q, want %q", marshaled, authKeyBytes) - } -} - -// Cert generated by ssh-keygen OpenSSH_6.8p1 OS X 10.10.3 -// % ssh-keygen -s ca -I testcert -O source-address=192.168.1.0/24 -O force-command=/bin/sleep user.pub -// user.pub key: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDACh1rt2DXfV3hk6fszSQcQ/rueMId0kVD9U7nl8cfEnFxqOCrNT92g4laQIGl2mn8lsGZfTLg8ksHq3gkvgO3oo/0wHy4v32JeBOHTsN5AL4gfHNEhWeWb50ev47hnTsRIt9P4dxogeUo/hTu7j9+s9lLpEQXCvq6xocXQt0j8MV9qZBBXFLXVT3cWIkSqOdwt/5ZBg+1GSrc7WfCXVWgTk4a20uPMuJPxU4RQwZW6X3+O8Pqo8C3cW0OzZRFP6gUYUKUsTI5WntlS+LAxgw1mZNsozFGdbiOPRnEryE3SRldh9vjDR3tin1fGpA5P7+CEB/bqaXtG3V+F2OkqaMN -// Critical Options: -// force-command /bin/sleep -// source-address 192.168.1.0/24 -// Extensions: -// permit-X11-forwarding -// permit-agent-forwarding -// permit-port-forwarding -// permit-pty -// permit-user-rc -const exampleSSHCertWithOptions = `ssh-rsa-cert-v01@openssh.com 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` - -func TestParseCertWithOptions(t *testing.T) { - opts := map[string]string{ - "source-address": "192.168.1.0/24", - "force-command": "/bin/sleep", - } - exts := map[string]string{ - "permit-X11-forwarding": "", - "permit-agent-forwarding": "", - "permit-port-forwarding": "", - "permit-pty": "", - "permit-user-rc": "", - } - authKeyBytes := []byte(exampleSSHCertWithOptions) - - key, _, _, rest, err := ParseAuthorizedKey(authKeyBytes) - if err != nil { - t.Fatalf("ParseAuthorizedKey: %v", err) - } - if len(rest) > 0 { - t.Errorf("rest: got %q, want empty", rest) - } - cert, ok := key.(*Certificate) - if !ok { - t.Fatalf("got %v (%T), want *Certificate", key, key) - } - if !reflect.DeepEqual(cert.CriticalOptions, opts) { - t.Errorf("unexpected critical options - got %v, want %v", cert.CriticalOptions, opts) - } - if !reflect.DeepEqual(cert.Extensions, exts) { - t.Errorf("unexpected Extensions - got %v, want %v", cert.Extensions, exts) - } - marshaled := MarshalAuthorizedKey(key) - // Before comparison, remove the trailing newline that - // MarshalAuthorizedKey adds. - marshaled = marshaled[:len(marshaled)-1] - if !bytes.Equal(authKeyBytes, marshaled) { - t.Errorf("marshaled certificate does not match original: got %q, want %q", marshaled, authKeyBytes) - } -} - -func TestValidateCert(t *testing.T) { - key, _, _, _, err := ParseAuthorizedKey([]byte(exampleSSHCert)) - if err != nil { - t.Fatalf("ParseAuthorizedKey: %v", err) - } - validCert, ok := key.(*Certificate) - if !ok { - t.Fatalf("got %v (%T), want *Certificate", key, key) - } - checker := CertChecker{} - checker.IsUserAuthority = func(k PublicKey) bool { - return bytes.Equal(k.Marshal(), validCert.SignatureKey.Marshal()) - } - - if err := checker.CheckCert("user", validCert); err != nil { - t.Errorf("Unable to validate certificate: %v", err) - } - invalidCert := &Certificate{ - Key: testPublicKeys["rsa"], - SignatureKey: testPublicKeys["ecdsa"], - ValidBefore: CertTimeInfinity, - Signature: &Signature{}, - } - if err := checker.CheckCert("user", invalidCert); err == nil { - t.Error("Invalid cert signature passed validation") - } -} - -func TestValidateCertTime(t *testing.T) { - cert := Certificate{ - ValidPrincipals: []string{"user"}, - Key: testPublicKeys["rsa"], - ValidAfter: 50, - ValidBefore: 100, - } - - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - - for ts, ok := range map[int64]bool{ - 25: false, - 50: true, - 99: true, - 100: false, - 125: false, - } { - checker := CertChecker{ - Clock: func() time.Time { return time.Unix(ts, 0) }, - } - checker.IsUserAuthority = func(k PublicKey) bool { - return bytes.Equal(k.Marshal(), - testPublicKeys["ecdsa"].Marshal()) - } - - if v := checker.CheckCert("user", &cert); (v == nil) != ok { - t.Errorf("Authenticate(%d): %v", ts, v) - } - } -} - -// TODO(hanwen): tests for -// -// host keys: -// * fallbacks - -func TestHostKeyCert(t *testing.T) { - cert := &Certificate{ - ValidPrincipals: []string{"hostname", "hostname.domain", "otherhost"}, - Key: testPublicKeys["rsa"], - ValidBefore: CertTimeInfinity, - CertType: HostCert, - } - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - - checker := &CertChecker{ - IsHostAuthority: func(p PublicKey, addr string) bool { - return addr == "hostname:22" && bytes.Equal(testPublicKeys["ecdsa"].Marshal(), p.Marshal()) - }, - } - - certSigner, err := NewCertSigner(cert, testSigners["rsa"]) - if err != nil { - t.Errorf("NewCertSigner: %v", err) - } - - for _, test := range []struct { - addr string - succeed bool - }{ - {addr: "hostname:22", succeed: true}, - {addr: "otherhost:22", succeed: false}, // The certificate is valid for 'otherhost' as hostname, but we only recognize the authority of the signer for the address 'hostname:22' - {addr: "lasthost:22", succeed: false}, - } { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - errc := make(chan error) - - go func() { - conf := ServerConfig{ - NoClientAuth: true, - } - conf.AddHostKey(certSigner) - _, _, _, err := NewServerConn(c1, &conf) - errc <- err - }() - - config := &ClientConfig{ - User: "user", - HostKeyCallback: checker.CheckHostKey, - } - _, _, _, err = NewClientConn(c2, test.addr, config) - - if (err == nil) != test.succeed { - t.Fatalf("NewClientConn(%q): %v", test.addr, err) - } - - err = <-errc - if (err == nil) != test.succeed { - t.Fatalf("NewServerConn(%q): %v", test.addr, err) - } - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/channel.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/channel.go deleted file mode 100644 index 195530ea0..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/channel.go +++ /dev/null @@ -1,633 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "encoding/binary" - "errors" - "fmt" - "io" - "log" - "sync" -) - -const ( - minPacketLength = 9 - // channelMaxPacket contains the maximum number of bytes that will be - // sent in a single packet. As per RFC 4253, section 6.1, 32k is also - // the minimum. - channelMaxPacket = 1 << 15 - // We follow OpenSSH here. - channelWindowSize = 64 * channelMaxPacket -) - -// NewChannel represents an incoming request to a channel. It must either be -// accepted for use by calling Accept, or rejected by calling Reject. -type NewChannel interface { - // Accept accepts the channel creation request. It returns the Channel - // and a Go channel containing SSH requests. The Go channel must be - // serviced otherwise the Channel will hang. - Accept() (Channel, <-chan *Request, error) - - // Reject rejects the channel creation request. After calling - // this, no other methods on the Channel may be called. - Reject(reason RejectionReason, message string) error - - // ChannelType returns the type of the channel, as supplied by the - // client. - ChannelType() string - - // ExtraData returns the arbitrary payload for this channel, as supplied - // by the client. This data is specific to the channel type. - ExtraData() []byte -} - -// A Channel is an ordered, reliable, flow-controlled, duplex stream -// that is multiplexed over an SSH connection. -type Channel interface { - // Read reads up to len(data) bytes from the channel. - Read(data []byte) (int, error) - - // Write writes len(data) bytes to the channel. - Write(data []byte) (int, error) - - // Close signals end of channel use. No data may be sent after this - // call. - Close() error - - // CloseWrite signals the end of sending in-band - // data. Requests may still be sent, and the other side may - // still send data - CloseWrite() error - - // SendRequest sends a channel request. If wantReply is true, - // it will wait for a reply and return the result as a - // boolean, otherwise the return value will be false. Channel - // requests are out-of-band messages so they may be sent even - // if the data stream is closed or blocked by flow control. - // If the channel is closed before a reply is returned, io.EOF - // is returned. - SendRequest(name string, wantReply bool, payload []byte) (bool, error) - - // Stderr returns an io.ReadWriter that writes to this channel - // with the extended data type set to stderr. Stderr may - // safely be read and written from a different goroutine than - // Read and Write respectively. - Stderr() io.ReadWriter -} - -// Request is a request sent outside of the normal stream of -// data. Requests can either be specific to an SSH channel, or they -// can be global. -type Request struct { - Type string - WantReply bool - Payload []byte - - ch *channel - mux *mux -} - -// Reply sends a response to a request. It must be called for all requests -// where WantReply is true and is a no-op otherwise. The payload argument is -// ignored for replies to channel-specific requests. -func (r *Request) Reply(ok bool, payload []byte) error { - if !r.WantReply { - return nil - } - - if r.ch == nil { - return r.mux.ackRequest(ok, payload) - } - - return r.ch.ackRequest(ok) -} - -// RejectionReason is an enumeration used when rejecting channel creation -// requests. See RFC 4254, section 5.1. -type RejectionReason uint32 - -const ( - Prohibited RejectionReason = iota + 1 - ConnectionFailed - UnknownChannelType - ResourceShortage -) - -// String converts the rejection reason to human readable form. -func (r RejectionReason) String() string { - switch r { - case Prohibited: - return "administratively prohibited" - case ConnectionFailed: - return "connect failed" - case UnknownChannelType: - return "unknown channel type" - case ResourceShortage: - return "resource shortage" - } - return fmt.Sprintf("unknown reason %d", int(r)) -} - -func min(a uint32, b int) uint32 { - if a < uint32(b) { - return a - } - return uint32(b) -} - -type channelDirection uint8 - -const ( - channelInbound channelDirection = iota - channelOutbound -) - -// channel is an implementation of the Channel interface that works -// with the mux class. -type channel struct { - // R/O after creation - chanType string - extraData []byte - localId, remoteId uint32 - - // maxIncomingPayload and maxRemotePayload are the maximum - // payload sizes of normal and extended data packets for - // receiving and sending, respectively. The wire packet will - // be 9 or 13 bytes larger (excluding encryption overhead). - maxIncomingPayload uint32 - maxRemotePayload uint32 - - mux *mux - - // decided is set to true if an accept or reject message has been sent - // (for outbound channels) or received (for inbound channels). - decided bool - - // direction contains either channelOutbound, for channels created - // locally, or channelInbound, for channels created by the peer. - direction channelDirection - - // Pending internal channel messages. - msg chan interface{} - - // Since requests have no ID, there can be only one request - // with WantReply=true outstanding. This lock is held by a - // goroutine that has such an outgoing request pending. - sentRequestMu sync.Mutex - - incomingRequests chan *Request - - sentEOF bool - - // thread-safe data - remoteWin window - pending *buffer - extPending *buffer - - // windowMu protects myWindow, the flow-control window. - windowMu sync.Mutex - myWindow uint32 - - // writeMu serializes calls to mux.conn.writePacket() and - // protects sentClose and packetPool. This mutex must be - // different from windowMu, as writePacket can block if there - // is a key exchange pending. - writeMu sync.Mutex - sentClose bool - - // packetPool has a buffer for each extended channel ID to - // save allocations during writes. - packetPool map[uint32][]byte -} - -// writePacket sends a packet. If the packet is a channel close, it updates -// sentClose. This method takes the lock c.writeMu. -func (c *channel) writePacket(packet []byte) error { - c.writeMu.Lock() - if c.sentClose { - c.writeMu.Unlock() - return io.EOF - } - c.sentClose = (packet[0] == msgChannelClose) - err := c.mux.conn.writePacket(packet) - c.writeMu.Unlock() - return err -} - -func (c *channel) sendMessage(msg interface{}) error { - if debugMux { - log.Printf("send(%d): %#v", c.mux.chanList.offset, msg) - } - - p := Marshal(msg) - binary.BigEndian.PutUint32(p[1:], c.remoteId) - return c.writePacket(p) -} - -// WriteExtended writes data to a specific extended stream. These streams are -// used, for example, for stderr. -func (c *channel) WriteExtended(data []byte, extendedCode uint32) (n int, err error) { - if c.sentEOF { - return 0, io.EOF - } - // 1 byte message type, 4 bytes remoteId, 4 bytes data length - opCode := byte(msgChannelData) - headerLength := uint32(9) - if extendedCode > 0 { - headerLength += 4 - opCode = msgChannelExtendedData - } - - c.writeMu.Lock() - packet := c.packetPool[extendedCode] - // We don't remove the buffer from packetPool, so - // WriteExtended calls from different goroutines will be - // flagged as errors by the race detector. - c.writeMu.Unlock() - - for len(data) > 0 { - space := min(c.maxRemotePayload, len(data)) - if space, err = c.remoteWin.reserve(space); err != nil { - return n, err - } - if want := headerLength + space; uint32(cap(packet)) < want { - packet = make([]byte, want) - } else { - packet = packet[:want] - } - - todo := data[:space] - - packet[0] = opCode - binary.BigEndian.PutUint32(packet[1:], c.remoteId) - if extendedCode > 0 { - binary.BigEndian.PutUint32(packet[5:], uint32(extendedCode)) - } - binary.BigEndian.PutUint32(packet[headerLength-4:], uint32(len(todo))) - copy(packet[headerLength:], todo) - if err = c.writePacket(packet); err != nil { - return n, err - } - - n += len(todo) - data = data[len(todo):] - } - - c.writeMu.Lock() - c.packetPool[extendedCode] = packet - c.writeMu.Unlock() - - return n, err -} - -func (c *channel) handleData(packet []byte) error { - headerLen := 9 - isExtendedData := packet[0] == msgChannelExtendedData - if isExtendedData { - headerLen = 13 - } - if len(packet) < headerLen { - // malformed data packet - return parseError(packet[0]) - } - - var extended uint32 - if isExtendedData { - extended = binary.BigEndian.Uint32(packet[5:]) - } - - length := binary.BigEndian.Uint32(packet[headerLen-4 : headerLen]) - if length == 0 { - return nil - } - if length > c.maxIncomingPayload { - // TODO(hanwen): should send Disconnect? - return errors.New("ssh: incoming packet exceeds maximum payload size") - } - - data := packet[headerLen:] - if length != uint32(len(data)) { - return errors.New("ssh: wrong packet length") - } - - c.windowMu.Lock() - if c.myWindow < length { - c.windowMu.Unlock() - // TODO(hanwen): should send Disconnect with reason? - return errors.New("ssh: remote side wrote too much") - } - c.myWindow -= length - c.windowMu.Unlock() - - if extended == 1 { - c.extPending.write(data) - } else if extended > 0 { - // discard other extended data. - } else { - c.pending.write(data) - } - return nil -} - -func (c *channel) adjustWindow(n uint32) error { - c.windowMu.Lock() - // Since myWindow is managed on our side, and can never exceed - // the initial window setting, we don't worry about overflow. - c.myWindow += uint32(n) - c.windowMu.Unlock() - return c.sendMessage(windowAdjustMsg{ - AdditionalBytes: uint32(n), - }) -} - -func (c *channel) ReadExtended(data []byte, extended uint32) (n int, err error) { - switch extended { - case 1: - n, err = c.extPending.Read(data) - case 0: - n, err = c.pending.Read(data) - default: - return 0, fmt.Errorf("ssh: extended code %d unimplemented", extended) - } - - if n > 0 { - err = c.adjustWindow(uint32(n)) - // sendWindowAdjust can return io.EOF if the remote - // peer has closed the connection, however we want to - // defer forwarding io.EOF to the caller of Read until - // the buffer has been drained. - if n > 0 && err == io.EOF { - err = nil - } - } - - return n, err -} - -func (c *channel) close() { - c.pending.eof() - c.extPending.eof() - close(c.msg) - close(c.incomingRequests) - c.writeMu.Lock() - // This is not necessary for a normal channel teardown, but if - // there was another error, it is. - c.sentClose = true - c.writeMu.Unlock() - // Unblock writers. - c.remoteWin.close() -} - -// responseMessageReceived is called when a success or failure message is -// received on a channel to check that such a message is reasonable for the -// given channel. -func (c *channel) responseMessageReceived() error { - if c.direction == channelInbound { - return errors.New("ssh: channel response message received on inbound channel") - } - if c.decided { - return errors.New("ssh: duplicate response received for channel") - } - c.decided = true - return nil -} - -func (c *channel) handlePacket(packet []byte) error { - switch packet[0] { - case msgChannelData, msgChannelExtendedData: - return c.handleData(packet) - case msgChannelClose: - c.sendMessage(channelCloseMsg{PeersId: c.remoteId}) - c.mux.chanList.remove(c.localId) - c.close() - return nil - case msgChannelEOF: - // RFC 4254 is mute on how EOF affects dataExt messages but - // it is logical to signal EOF at the same time. - c.extPending.eof() - c.pending.eof() - return nil - } - - decoded, err := decode(packet) - if err != nil { - return err - } - - switch msg := decoded.(type) { - case *channelOpenFailureMsg: - if err := c.responseMessageReceived(); err != nil { - return err - } - c.mux.chanList.remove(msg.PeersId) - c.msg <- msg - case *channelOpenConfirmMsg: - if err := c.responseMessageReceived(); err != nil { - return err - } - if msg.MaxPacketSize < minPacketLength || msg.MaxPacketSize > 1<<31 { - return fmt.Errorf("ssh: invalid MaxPacketSize %d from peer", msg.MaxPacketSize) - } - c.remoteId = msg.MyId - c.maxRemotePayload = msg.MaxPacketSize - c.remoteWin.add(msg.MyWindow) - c.msg <- msg - case *windowAdjustMsg: - if !c.remoteWin.add(msg.AdditionalBytes) { - return fmt.Errorf("ssh: invalid window update for %d bytes", msg.AdditionalBytes) - } - case *channelRequestMsg: - req := Request{ - Type: msg.Request, - WantReply: msg.WantReply, - Payload: msg.RequestSpecificData, - ch: c, - } - - c.incomingRequests <- &req - default: - c.msg <- msg - } - return nil -} - -func (m *mux) newChannel(chanType string, direction channelDirection, extraData []byte) *channel { - ch := &channel{ - remoteWin: window{Cond: newCond()}, - myWindow: channelWindowSize, - pending: newBuffer(), - extPending: newBuffer(), - direction: direction, - incomingRequests: make(chan *Request, chanSize), - msg: make(chan interface{}, chanSize), - chanType: chanType, - extraData: extraData, - mux: m, - packetPool: make(map[uint32][]byte), - } - ch.localId = m.chanList.add(ch) - return ch -} - -var errUndecided = errors.New("ssh: must Accept or Reject channel") -var errDecidedAlready = errors.New("ssh: can call Accept or Reject only once") - -type extChannel struct { - code uint32 - ch *channel -} - -func (e *extChannel) Write(data []byte) (n int, err error) { - return e.ch.WriteExtended(data, e.code) -} - -func (e *extChannel) Read(data []byte) (n int, err error) { - return e.ch.ReadExtended(data, e.code) -} - -func (c *channel) Accept() (Channel, <-chan *Request, error) { - if c.decided { - return nil, nil, errDecidedAlready - } - c.maxIncomingPayload = channelMaxPacket - confirm := channelOpenConfirmMsg{ - PeersId: c.remoteId, - MyId: c.localId, - MyWindow: c.myWindow, - MaxPacketSize: c.maxIncomingPayload, - } - c.decided = true - if err := c.sendMessage(confirm); err != nil { - return nil, nil, err - } - - return c, c.incomingRequests, nil -} - -func (ch *channel) Reject(reason RejectionReason, message string) error { - if ch.decided { - return errDecidedAlready - } - reject := channelOpenFailureMsg{ - PeersId: ch.remoteId, - Reason: reason, - Message: message, - Language: "en", - } - ch.decided = true - return ch.sendMessage(reject) -} - -func (ch *channel) Read(data []byte) (int, error) { - if !ch.decided { - return 0, errUndecided - } - return ch.ReadExtended(data, 0) -} - -func (ch *channel) Write(data []byte) (int, error) { - if !ch.decided { - return 0, errUndecided - } - return ch.WriteExtended(data, 0) -} - -func (ch *channel) CloseWrite() error { - if !ch.decided { - return errUndecided - } - ch.sentEOF = true - return ch.sendMessage(channelEOFMsg{ - PeersId: ch.remoteId}) -} - -func (ch *channel) Close() error { - if !ch.decided { - return errUndecided - } - - return ch.sendMessage(channelCloseMsg{ - PeersId: ch.remoteId}) -} - -// Extended returns an io.ReadWriter that sends and receives data on the given, -// SSH extended stream. Such streams are used, for example, for stderr. -func (ch *channel) Extended(code uint32) io.ReadWriter { - if !ch.decided { - return nil - } - return &extChannel{code, ch} -} - -func (ch *channel) Stderr() io.ReadWriter { - return ch.Extended(1) -} - -func (ch *channel) SendRequest(name string, wantReply bool, payload []byte) (bool, error) { - if !ch.decided { - return false, errUndecided - } - - if wantReply { - ch.sentRequestMu.Lock() - defer ch.sentRequestMu.Unlock() - } - - msg := channelRequestMsg{ - PeersId: ch.remoteId, - Request: name, - WantReply: wantReply, - RequestSpecificData: payload, - } - - if err := ch.sendMessage(msg); err != nil { - return false, err - } - - if wantReply { - m, ok := (<-ch.msg) - if !ok { - return false, io.EOF - } - switch m.(type) { - case *channelRequestFailureMsg: - return false, nil - case *channelRequestSuccessMsg: - return true, nil - default: - return false, fmt.Errorf("ssh: unexpected response to channel request: %#v", m) - } - } - - return false, nil -} - -// ackRequest either sends an ack or nack to the channel request. -func (ch *channel) ackRequest(ok bool) error { - if !ch.decided { - return errUndecided - } - - var msg interface{} - if !ok { - msg = channelRequestFailureMsg{ - PeersId: ch.remoteId, - } - } else { - msg = channelRequestSuccessMsg{ - PeersId: ch.remoteId, - } - } - return ch.sendMessage(msg) -} - -func (ch *channel) ChannelType() string { - return ch.chanType -} - -func (ch *channel) ExtraData() []byte { - return ch.extraData -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/cipher.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/cipher.go deleted file mode 100644 index aed2b1f01..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/cipher.go +++ /dev/null @@ -1,629 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "crypto/aes" - "crypto/cipher" - "crypto/des" - "crypto/rc4" - "crypto/subtle" - "encoding/binary" - "errors" - "fmt" - "hash" - "io" - "io/ioutil" -) - -const ( - packetSizeMultiple = 16 // TODO(huin) this should be determined by the cipher. - - // RFC 4253 section 6.1 defines a minimum packet size of 32768 that implementations - // MUST be able to process (plus a few more kilobytes for padding and mac). The RFC - // indicates implementations SHOULD be able to handle larger packet sizes, but then - // waffles on about reasonable limits. - // - // OpenSSH caps their maxPacket at 256kB so we choose to do - // the same. maxPacket is also used to ensure that uint32 - // length fields do not overflow, so it should remain well - // below 4G. - maxPacket = 256 * 1024 -) - -// noneCipher implements cipher.Stream and provides no encryption. It is used -// by the transport before the first key-exchange. -type noneCipher struct{} - -func (c noneCipher) XORKeyStream(dst, src []byte) { - copy(dst, src) -} - -func newAESCTR(key, iv []byte) (cipher.Stream, error) { - c, err := aes.NewCipher(key) - if err != nil { - return nil, err - } - return cipher.NewCTR(c, iv), nil -} - -func newRC4(key, iv []byte) (cipher.Stream, error) { - return rc4.NewCipher(key) -} - -type streamCipherMode struct { - keySize int - ivSize int - skip int - createFunc func(key, iv []byte) (cipher.Stream, error) -} - -func (c *streamCipherMode) createStream(key, iv []byte) (cipher.Stream, error) { - if len(key) < c.keySize { - panic("ssh: key length too small for cipher") - } - if len(iv) < c.ivSize { - panic("ssh: iv too small for cipher") - } - - stream, err := c.createFunc(key[:c.keySize], iv[:c.ivSize]) - if err != nil { - return nil, err - } - - var streamDump []byte - if c.skip > 0 { - streamDump = make([]byte, 512) - } - - for remainingToDump := c.skip; remainingToDump > 0; { - dumpThisTime := remainingToDump - if dumpThisTime > len(streamDump) { - dumpThisTime = len(streamDump) - } - stream.XORKeyStream(streamDump[:dumpThisTime], streamDump[:dumpThisTime]) - remainingToDump -= dumpThisTime - } - - return stream, nil -} - -// cipherModes documents properties of supported ciphers. Ciphers not included -// are not supported and will not be negotiated, even if explicitly requested in -// ClientConfig.Crypto.Ciphers. -var cipherModes = map[string]*streamCipherMode{ - // Ciphers from RFC4344, which introduced many CTR-based ciphers. Algorithms - // are defined in the order specified in the RFC. - "aes128-ctr": {16, aes.BlockSize, 0, newAESCTR}, - "aes192-ctr": {24, aes.BlockSize, 0, newAESCTR}, - "aes256-ctr": {32, aes.BlockSize, 0, newAESCTR}, - - // Ciphers from RFC4345, which introduces security-improved arcfour ciphers. - // They are defined in the order specified in the RFC. - "arcfour128": {16, 0, 1536, newRC4}, - "arcfour256": {32, 0, 1536, newRC4}, - - // Cipher defined in RFC 4253, which describes SSH Transport Layer Protocol. - // Note that this cipher is not safe, as stated in RFC 4253: "Arcfour (and - // RC4) has problems with weak keys, and should be used with caution." - // RFC4345 introduces improved versions of Arcfour. - "arcfour": {16, 0, 0, newRC4}, - - // AES-GCM is not a stream cipher, so it is constructed with a - // special case. If we add any more non-stream ciphers, we - // should invest a cleaner way to do this. - gcmCipherID: {16, 12, 0, nil}, - - // CBC mode is insecure and so is not included in the default config. - // (See http://www.isg.rhul.ac.uk/~kp/SandPfinal.pdf). If absolutely - // needed, it's possible to specify a custom Config to enable it. - // You should expect that an active attacker can recover plaintext if - // you do. - aes128cbcID: {16, aes.BlockSize, 0, nil}, - - // 3des-cbc is insecure and is disabled by default. - tripledescbcID: {24, des.BlockSize, 0, nil}, -} - -// prefixLen is the length of the packet prefix that contains the packet length -// and number of padding bytes. -const prefixLen = 5 - -// streamPacketCipher is a packetCipher using a stream cipher. -type streamPacketCipher struct { - mac hash.Hash - cipher cipher.Stream - etm bool - - // The following members are to avoid per-packet allocations. - prefix [prefixLen]byte - seqNumBytes [4]byte - padding [2 * packetSizeMultiple]byte - packetData []byte - macResult []byte -} - -// readPacket reads and decrypt a single packet from the reader argument. -func (s *streamPacketCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) { - if _, err := io.ReadFull(r, s.prefix[:]); err != nil { - return nil, err - } - - var encryptedPaddingLength [1]byte - if s.mac != nil && s.etm { - copy(encryptedPaddingLength[:], s.prefix[4:5]) - s.cipher.XORKeyStream(s.prefix[4:5], s.prefix[4:5]) - } else { - s.cipher.XORKeyStream(s.prefix[:], s.prefix[:]) - } - - length := binary.BigEndian.Uint32(s.prefix[0:4]) - paddingLength := uint32(s.prefix[4]) - - var macSize uint32 - if s.mac != nil { - s.mac.Reset() - binary.BigEndian.PutUint32(s.seqNumBytes[:], seqNum) - s.mac.Write(s.seqNumBytes[:]) - if s.etm { - s.mac.Write(s.prefix[:4]) - s.mac.Write(encryptedPaddingLength[:]) - } else { - s.mac.Write(s.prefix[:]) - } - macSize = uint32(s.mac.Size()) - } - - if length <= paddingLength+1 { - return nil, errors.New("ssh: invalid packet length, packet too small") - } - - if length > maxPacket { - return nil, errors.New("ssh: invalid packet length, packet too large") - } - - // the maxPacket check above ensures that length-1+macSize - // does not overflow. - if uint32(cap(s.packetData)) < length-1+macSize { - s.packetData = make([]byte, length-1+macSize) - } else { - s.packetData = s.packetData[:length-1+macSize] - } - - if _, err := io.ReadFull(r, s.packetData); err != nil { - return nil, err - } - mac := s.packetData[length-1:] - data := s.packetData[:length-1] - - if s.mac != nil && s.etm { - s.mac.Write(data) - } - - s.cipher.XORKeyStream(data, data) - - if s.mac != nil { - if !s.etm { - s.mac.Write(data) - } - s.macResult = s.mac.Sum(s.macResult[:0]) - if subtle.ConstantTimeCompare(s.macResult, mac) != 1 { - return nil, errors.New("ssh: MAC failure") - } - } - - return s.packetData[:length-paddingLength-1], nil -} - -// writePacket encrypts and sends a packet of data to the writer argument -func (s *streamPacketCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error { - if len(packet) > maxPacket { - return errors.New("ssh: packet too large") - } - - aadlen := 0 - if s.mac != nil && s.etm { - // packet length is not encrypted for EtM modes - aadlen = 4 - } - - paddingLength := packetSizeMultiple - (prefixLen+len(packet)-aadlen)%packetSizeMultiple - if paddingLength < 4 { - paddingLength += packetSizeMultiple - } - - length := len(packet) + 1 + paddingLength - binary.BigEndian.PutUint32(s.prefix[:], uint32(length)) - s.prefix[4] = byte(paddingLength) - padding := s.padding[:paddingLength] - if _, err := io.ReadFull(rand, padding); err != nil { - return err - } - - if s.mac != nil { - s.mac.Reset() - binary.BigEndian.PutUint32(s.seqNumBytes[:], seqNum) - s.mac.Write(s.seqNumBytes[:]) - - if s.etm { - // For EtM algorithms, the packet length must stay unencrypted, - // but the following data (padding length) must be encrypted - s.cipher.XORKeyStream(s.prefix[4:5], s.prefix[4:5]) - } - - s.mac.Write(s.prefix[:]) - - if !s.etm { - // For non-EtM algorithms, the algorithm is applied on unencrypted data - s.mac.Write(packet) - s.mac.Write(padding) - } - } - - if !(s.mac != nil && s.etm) { - // For EtM algorithms, the padding length has already been encrypted - // and the packet length must remain unencrypted - s.cipher.XORKeyStream(s.prefix[:], s.prefix[:]) - } - - s.cipher.XORKeyStream(packet, packet) - s.cipher.XORKeyStream(padding, padding) - - if s.mac != nil && s.etm { - // For EtM algorithms, packet and padding must be encrypted - s.mac.Write(packet) - s.mac.Write(padding) - } - - if _, err := w.Write(s.prefix[:]); err != nil { - return err - } - if _, err := w.Write(packet); err != nil { - return err - } - if _, err := w.Write(padding); err != nil { - return err - } - - if s.mac != nil { - s.macResult = s.mac.Sum(s.macResult[:0]) - if _, err := w.Write(s.macResult); err != nil { - return err - } - } - - return nil -} - -type gcmCipher struct { - aead cipher.AEAD - prefix [4]byte - iv []byte - buf []byte -} - -func newGCMCipher(iv, key []byte) (packetCipher, error) { - c, err := aes.NewCipher(key) - if err != nil { - return nil, err - } - - aead, err := cipher.NewGCM(c) - if err != nil { - return nil, err - } - - return &gcmCipher{ - aead: aead, - iv: iv, - }, nil -} - -const gcmTagSize = 16 - -func (c *gcmCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error { - // Pad out to multiple of 16 bytes. This is different from the - // stream cipher because that encrypts the length too. - padding := byte(packetSizeMultiple - (1+len(packet))%packetSizeMultiple) - if padding < 4 { - padding += packetSizeMultiple - } - - length := uint32(len(packet) + int(padding) + 1) - binary.BigEndian.PutUint32(c.prefix[:], length) - if _, err := w.Write(c.prefix[:]); err != nil { - return err - } - - if cap(c.buf) < int(length) { - c.buf = make([]byte, length) - } else { - c.buf = c.buf[:length] - } - - c.buf[0] = padding - copy(c.buf[1:], packet) - if _, err := io.ReadFull(rand, c.buf[1+len(packet):]); err != nil { - return err - } - c.buf = c.aead.Seal(c.buf[:0], c.iv, c.buf, c.prefix[:]) - if _, err := w.Write(c.buf); err != nil { - return err - } - c.incIV() - - return nil -} - -func (c *gcmCipher) incIV() { - for i := 4 + 7; i >= 4; i-- { - c.iv[i]++ - if c.iv[i] != 0 { - break - } - } -} - -func (c *gcmCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) { - if _, err := io.ReadFull(r, c.prefix[:]); err != nil { - return nil, err - } - length := binary.BigEndian.Uint32(c.prefix[:]) - if length > maxPacket { - return nil, errors.New("ssh: max packet length exceeded.") - } - - if cap(c.buf) < int(length+gcmTagSize) { - c.buf = make([]byte, length+gcmTagSize) - } else { - c.buf = c.buf[:length+gcmTagSize] - } - - if _, err := io.ReadFull(r, c.buf); err != nil { - return nil, err - } - - plain, err := c.aead.Open(c.buf[:0], c.iv, c.buf, c.prefix[:]) - if err != nil { - return nil, err - } - c.incIV() - - padding := plain[0] - if padding < 4 { - // padding is a byte, so it automatically satisfies - // the maximum size, which is 255. - return nil, fmt.Errorf("ssh: illegal padding %d", padding) - } - - if int(padding+1) >= len(plain) { - return nil, fmt.Errorf("ssh: padding %d too large", padding) - } - plain = plain[1 : length-uint32(padding)] - return plain, nil -} - -// cbcCipher implements aes128-cbc cipher defined in RFC 4253 section 6.1 -type cbcCipher struct { - mac hash.Hash - macSize uint32 - decrypter cipher.BlockMode - encrypter cipher.BlockMode - - // The following members are to avoid per-packet allocations. - seqNumBytes [4]byte - packetData []byte - macResult []byte - - // Amount of data we should still read to hide which - // verification error triggered. - oracleCamouflage uint32 -} - -func newCBCCipher(c cipher.Block, iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) { - cbc := &cbcCipher{ - mac: macModes[algs.MAC].new(macKey), - decrypter: cipher.NewCBCDecrypter(c, iv), - encrypter: cipher.NewCBCEncrypter(c, iv), - packetData: make([]byte, 1024), - } - if cbc.mac != nil { - cbc.macSize = uint32(cbc.mac.Size()) - } - - return cbc, nil -} - -func newAESCBCCipher(iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) { - c, err := aes.NewCipher(key) - if err != nil { - return nil, err - } - - cbc, err := newCBCCipher(c, iv, key, macKey, algs) - if err != nil { - return nil, err - } - - return cbc, nil -} - -func newTripleDESCBCCipher(iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) { - c, err := des.NewTripleDESCipher(key) - if err != nil { - return nil, err - } - - cbc, err := newCBCCipher(c, iv, key, macKey, algs) - if err != nil { - return nil, err - } - - return cbc, nil -} - -func maxUInt32(a, b int) uint32 { - if a > b { - return uint32(a) - } - return uint32(b) -} - -const ( - cbcMinPacketSizeMultiple = 8 - cbcMinPacketSize = 16 - cbcMinPaddingSize = 4 -) - -// cbcError represents a verification error that may leak information. -type cbcError string - -func (e cbcError) Error() string { return string(e) } - -func (c *cbcCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) { - p, err := c.readPacketLeaky(seqNum, r) - if err != nil { - if _, ok := err.(cbcError); ok { - // Verification error: read a fixed amount of - // data, to make distinguishing between - // failing MAC and failing length check more - // difficult. - io.CopyN(ioutil.Discard, r, int64(c.oracleCamouflage)) - } - } - return p, err -} - -func (c *cbcCipher) readPacketLeaky(seqNum uint32, r io.Reader) ([]byte, error) { - blockSize := c.decrypter.BlockSize() - - // Read the header, which will include some of the subsequent data in the - // case of block ciphers - this is copied back to the payload later. - // How many bytes of payload/padding will be read with this first read. - firstBlockLength := uint32((prefixLen + blockSize - 1) / blockSize * blockSize) - firstBlock := c.packetData[:firstBlockLength] - if _, err := io.ReadFull(r, firstBlock); err != nil { - return nil, err - } - - c.oracleCamouflage = maxPacket + 4 + c.macSize - firstBlockLength - - c.decrypter.CryptBlocks(firstBlock, firstBlock) - length := binary.BigEndian.Uint32(firstBlock[:4]) - if length > maxPacket { - return nil, cbcError("ssh: packet too large") - } - if length+4 < maxUInt32(cbcMinPacketSize, blockSize) { - // The minimum size of a packet is 16 (or the cipher block size, whichever - // is larger) bytes. - return nil, cbcError("ssh: packet too small") - } - // The length of the packet (including the length field but not the MAC) must - // be a multiple of the block size or 8, whichever is larger. - if (length+4)%maxUInt32(cbcMinPacketSizeMultiple, blockSize) != 0 { - return nil, cbcError("ssh: invalid packet length multiple") - } - - paddingLength := uint32(firstBlock[4]) - if paddingLength < cbcMinPaddingSize || length <= paddingLength+1 { - return nil, cbcError("ssh: invalid packet length") - } - - // Positions within the c.packetData buffer: - macStart := 4 + length - paddingStart := macStart - paddingLength - - // Entire packet size, starting before length, ending at end of mac. - entirePacketSize := macStart + c.macSize - - // Ensure c.packetData is large enough for the entire packet data. - if uint32(cap(c.packetData)) < entirePacketSize { - // Still need to upsize and copy, but this should be rare at runtime, only - // on upsizing the packetData buffer. - c.packetData = make([]byte, entirePacketSize) - copy(c.packetData, firstBlock) - } else { - c.packetData = c.packetData[:entirePacketSize] - } - - if n, err := io.ReadFull(r, c.packetData[firstBlockLength:]); err != nil { - return nil, err - } else { - c.oracleCamouflage -= uint32(n) - } - - remainingCrypted := c.packetData[firstBlockLength:macStart] - c.decrypter.CryptBlocks(remainingCrypted, remainingCrypted) - - mac := c.packetData[macStart:] - if c.mac != nil { - c.mac.Reset() - binary.BigEndian.PutUint32(c.seqNumBytes[:], seqNum) - c.mac.Write(c.seqNumBytes[:]) - c.mac.Write(c.packetData[:macStart]) - c.macResult = c.mac.Sum(c.macResult[:0]) - if subtle.ConstantTimeCompare(c.macResult, mac) != 1 { - return nil, cbcError("ssh: MAC failure") - } - } - - return c.packetData[prefixLen:paddingStart], nil -} - -func (c *cbcCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error { - effectiveBlockSize := maxUInt32(cbcMinPacketSizeMultiple, c.encrypter.BlockSize()) - - // Length of encrypted portion of the packet (header, payload, padding). - // Enforce minimum padding and packet size. - encLength := maxUInt32(prefixLen+len(packet)+cbcMinPaddingSize, cbcMinPaddingSize) - // Enforce block size. - encLength = (encLength + effectiveBlockSize - 1) / effectiveBlockSize * effectiveBlockSize - - length := encLength - 4 - paddingLength := int(length) - (1 + len(packet)) - - // Overall buffer contains: header, payload, padding, mac. - // Space for the MAC is reserved in the capacity but not the slice length. - bufferSize := encLength + c.macSize - if uint32(cap(c.packetData)) < bufferSize { - c.packetData = make([]byte, encLength, bufferSize) - } else { - c.packetData = c.packetData[:encLength] - } - - p := c.packetData - - // Packet header. - binary.BigEndian.PutUint32(p, length) - p = p[4:] - p[0] = byte(paddingLength) - - // Payload. - p = p[1:] - copy(p, packet) - - // Padding. - p = p[len(packet):] - if _, err := io.ReadFull(rand, p); err != nil { - return err - } - - if c.mac != nil { - c.mac.Reset() - binary.BigEndian.PutUint32(c.seqNumBytes[:], seqNum) - c.mac.Write(c.seqNumBytes[:]) - c.mac.Write(c.packetData) - // The MAC is now appended into the capacity reserved for it earlier. - c.packetData = c.mac.Sum(c.packetData) - } - - c.encrypter.CryptBlocks(c.packetData[:encLength], c.packetData[:encLength]) - - if _, err := w.Write(c.packetData); err != nil { - return err - } - - return nil -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/cipher_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/cipher_test.go deleted file mode 100644 index 5cfa17a62..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/cipher_test.go +++ /dev/null @@ -1,129 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "crypto" - "crypto/aes" - "crypto/rand" - "testing" -) - -func TestDefaultCiphersExist(t *testing.T) { - for _, cipherAlgo := range supportedCiphers { - if _, ok := cipherModes[cipherAlgo]; !ok { - t.Errorf("default cipher %q is unknown", cipherAlgo) - } - } -} - -func TestPacketCiphers(t *testing.T) { - // Still test aes128cbc cipher although it's commented out. - cipherModes[aes128cbcID] = &streamCipherMode{16, aes.BlockSize, 0, nil} - defer delete(cipherModes, aes128cbcID) - - for cipher := range cipherModes { - for mac := range macModes { - kr := &kexResult{Hash: crypto.SHA1} - algs := directionAlgorithms{ - Cipher: cipher, - MAC: mac, - Compression: "none", - } - client, err := newPacketCipher(clientKeys, algs, kr) - if err != nil { - t.Errorf("newPacketCipher(client, %q, %q): %v", cipher, mac, err) - continue - } - server, err := newPacketCipher(clientKeys, algs, kr) - if err != nil { - t.Errorf("newPacketCipher(client, %q, %q): %v", cipher, mac, err) - continue - } - - want := "bla bla" - input := []byte(want) - buf := &bytes.Buffer{} - if err := client.writePacket(0, buf, rand.Reader, input); err != nil { - t.Errorf("writePacket(%q, %q): %v", cipher, mac, err) - continue - } - - packet, err := server.readPacket(0, buf) - if err != nil { - t.Errorf("readPacket(%q, %q): %v", cipher, mac, err) - continue - } - - if string(packet) != want { - t.Errorf("roundtrip(%q, %q): got %q, want %q", cipher, mac, packet, want) - } - } - } -} - -func TestCBCOracleCounterMeasure(t *testing.T) { - cipherModes[aes128cbcID] = &streamCipherMode{16, aes.BlockSize, 0, nil} - defer delete(cipherModes, aes128cbcID) - - kr := &kexResult{Hash: crypto.SHA1} - algs := directionAlgorithms{ - Cipher: aes128cbcID, - MAC: "hmac-sha1", - Compression: "none", - } - client, err := newPacketCipher(clientKeys, algs, kr) - if err != nil { - t.Fatalf("newPacketCipher(client): %v", err) - } - - want := "bla bla" - input := []byte(want) - buf := &bytes.Buffer{} - if err := client.writePacket(0, buf, rand.Reader, input); err != nil { - t.Errorf("writePacket: %v", err) - } - - packetSize := buf.Len() - buf.Write(make([]byte, 2*maxPacket)) - - // We corrupt each byte, but this usually will only test the - // 'packet too large' or 'MAC failure' cases. - lastRead := -1 - for i := 0; i < packetSize; i++ { - server, err := newPacketCipher(clientKeys, algs, kr) - if err != nil { - t.Fatalf("newPacketCipher(client): %v", err) - } - - fresh := &bytes.Buffer{} - fresh.Write(buf.Bytes()) - fresh.Bytes()[i] ^= 0x01 - - before := fresh.Len() - _, err = server.readPacket(0, fresh) - if err == nil { - t.Errorf("corrupt byte %d: readPacket succeeded ", i) - continue - } - if _, ok := err.(cbcError); !ok { - t.Errorf("corrupt byte %d: got %v (%T), want cbcError", i, err, err) - continue - } - - after := fresh.Len() - bytesRead := before - after - if bytesRead < maxPacket { - t.Errorf("corrupt byte %d: read %d bytes, want more than %d", i, bytesRead, maxPacket) - continue - } - - if i > 0 && bytesRead != lastRead { - t.Errorf("corrupt byte %d: read %d bytes, want %d bytes read", i, bytesRead, lastRead) - } - lastRead = bytesRead - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client.go deleted file mode 100644 index 6fd199455..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client.go +++ /dev/null @@ -1,278 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "errors" - "fmt" - "net" - "os" - "sync" - "time" -) - -// Client implements a traditional SSH client that supports shells, -// subprocesses, TCP port/streamlocal forwarding and tunneled dialing. -type Client struct { - Conn - - forwards forwardList // forwarded tcpip connections from the remote side - mu sync.Mutex - channelHandlers map[string]chan NewChannel -} - -// HandleChannelOpen returns a channel on which NewChannel requests -// for the given type are sent. If the type already is being handled, -// nil is returned. The channel is closed when the connection is closed. -func (c *Client) HandleChannelOpen(channelType string) <-chan NewChannel { - c.mu.Lock() - defer c.mu.Unlock() - if c.channelHandlers == nil { - // The SSH channel has been closed. - c := make(chan NewChannel) - close(c) - return c - } - - ch := c.channelHandlers[channelType] - if ch != nil { - return nil - } - - ch = make(chan NewChannel, chanSize) - c.channelHandlers[channelType] = ch - return ch -} - -// NewClient creates a Client on top of the given connection. -func NewClient(c Conn, chans <-chan NewChannel, reqs <-chan *Request) *Client { - conn := &Client{ - Conn: c, - channelHandlers: make(map[string]chan NewChannel, 1), - } - - go conn.handleGlobalRequests(reqs) - go conn.handleChannelOpens(chans) - go func() { - conn.Wait() - conn.forwards.closeAll() - }() - go conn.forwards.handleChannels(conn.HandleChannelOpen("forwarded-tcpip")) - go conn.forwards.handleChannels(conn.HandleChannelOpen("forwarded-streamlocal@openssh.com")) - return conn -} - -// NewClientConn establishes an authenticated SSH connection using c -// as the underlying transport. The Request and NewChannel channels -// must be serviced or the connection will hang. -func NewClientConn(c net.Conn, addr string, config *ClientConfig) (Conn, <-chan NewChannel, <-chan *Request, error) { - fullConf := *config - fullConf.SetDefaults() - if fullConf.HostKeyCallback == nil { - c.Close() - return nil, nil, nil, errors.New("ssh: must specify HostKeyCallback") - } - - conn := &connection{ - sshConn: sshConn{conn: c}, - } - - if err := conn.clientHandshake(addr, &fullConf); err != nil { - c.Close() - return nil, nil, nil, fmt.Errorf("ssh: handshake failed: %v", err) - } - conn.mux = newMux(conn.transport) - return conn, conn.mux.incomingChannels, conn.mux.incomingRequests, nil -} - -// clientHandshake performs the client side key exchange. See RFC 4253 Section -// 7. -func (c *connection) clientHandshake(dialAddress string, config *ClientConfig) error { - if config.ClientVersion != "" { - c.clientVersion = []byte(config.ClientVersion) - } else { - c.clientVersion = []byte(packageVersion) - } - var err error - c.serverVersion, err = exchangeVersions(c.sshConn.conn, c.clientVersion) - if err != nil { - return err - } - - c.transport = newClientTransport( - newTransport(c.sshConn.conn, config.Rand, true /* is client */), - c.clientVersion, c.serverVersion, config, dialAddress, c.sshConn.RemoteAddr()) - if err := c.transport.waitSession(); err != nil { - return err - } - - c.sessionID = c.transport.getSessionID() - return c.clientAuthenticate(config) -} - -// verifyHostKeySignature verifies the host key obtained in the key -// exchange. -func verifyHostKeySignature(hostKey PublicKey, result *kexResult) error { - sig, rest, ok := parseSignatureBody(result.Signature) - if len(rest) > 0 || !ok { - return errors.New("ssh: signature parse error") - } - - return hostKey.Verify(result.H, sig) -} - -// NewSession opens a new Session for this client. (A session is a remote -// execution of a program.) -func (c *Client) NewSession() (*Session, error) { - ch, in, err := c.OpenChannel("session", nil) - if err != nil { - return nil, err - } - return newSession(ch, in) -} - -func (c *Client) handleGlobalRequests(incoming <-chan *Request) { - for r := range incoming { - // This handles keepalive messages and matches - // the behaviour of OpenSSH. - r.Reply(false, nil) - } -} - -// handleChannelOpens channel open messages from the remote side. -func (c *Client) handleChannelOpens(in <-chan NewChannel) { - for ch := range in { - c.mu.Lock() - handler := c.channelHandlers[ch.ChannelType()] - c.mu.Unlock() - - if handler != nil { - handler <- ch - } else { - ch.Reject(UnknownChannelType, fmt.Sprintf("unknown channel type: %v", ch.ChannelType())) - } - } - - c.mu.Lock() - for _, ch := range c.channelHandlers { - close(ch) - } - c.channelHandlers = nil - c.mu.Unlock() -} - -// Dial starts a client connection to the given SSH server. It is a -// convenience function that connects to the given network address, -// initiates the SSH handshake, and then sets up a Client. For access -// to incoming channels and requests, use net.Dial with NewClientConn -// instead. -func Dial(network, addr string, config *ClientConfig) (*Client, error) { - conn, err := net.DialTimeout(network, addr, config.Timeout) - if err != nil { - return nil, err - } - c, chans, reqs, err := NewClientConn(conn, addr, config) - if err != nil { - return nil, err - } - return NewClient(c, chans, reqs), nil -} - -// HostKeyCallback is the function type used for verifying server -// keys. A HostKeyCallback must return nil if the host key is OK, or -// an error to reject it. It receives the hostname as passed to Dial -// or NewClientConn. The remote address is the RemoteAddr of the -// net.Conn underlying the the SSH connection. -type HostKeyCallback func(hostname string, remote net.Addr, key PublicKey) error - -// BannerCallback is the function type used for treat the banner sent by -// the server. A BannerCallback receives the message sent by the remote server. -type BannerCallback func(message string) error - -// A ClientConfig structure is used to configure a Client. It must not be -// modified after having been passed to an SSH function. -type ClientConfig struct { - // Config contains configuration that is shared between clients and - // servers. - Config - - // User contains the username to authenticate as. - User string - - // Auth contains possible authentication methods to use with the - // server. Only the first instance of a particular RFC 4252 method will - // be used during authentication. - Auth []AuthMethod - - // HostKeyCallback is called during the cryptographic - // handshake to validate the server's host key. The client - // configuration must supply this callback for the connection - // to succeed. The functions InsecureIgnoreHostKey or - // FixedHostKey can be used for simplistic host key checks. - HostKeyCallback HostKeyCallback - - // BannerCallback is called during the SSH dance to display a custom - // server's message. The client configuration can supply this callback to - // handle it as wished. The function BannerDisplayStderr can be used for - // simplistic display on Stderr. - BannerCallback BannerCallback - - // ClientVersion contains the version identification string that will - // be used for the connection. If empty, a reasonable default is used. - ClientVersion string - - // HostKeyAlgorithms lists the key types that the client will - // accept from the server as host key, in order of - // preference. If empty, a reasonable default is used. Any - // string returned from PublicKey.Type method may be used, or - // any of the CertAlgoXxxx and KeyAlgoXxxx constants. - HostKeyAlgorithms []string - - // Timeout is the maximum amount of time for the TCP connection to establish. - // - // A Timeout of zero means no timeout. - Timeout time.Duration -} - -// InsecureIgnoreHostKey returns a function that can be used for -// ClientConfig.HostKeyCallback to accept any host key. It should -// not be used for production code. -func InsecureIgnoreHostKey() HostKeyCallback { - return func(hostname string, remote net.Addr, key PublicKey) error { - return nil - } -} - -type fixedHostKey struct { - key PublicKey -} - -func (f *fixedHostKey) check(hostname string, remote net.Addr, key PublicKey) error { - if f.key == nil { - return fmt.Errorf("ssh: required host key was nil") - } - if !bytes.Equal(key.Marshal(), f.key.Marshal()) { - return fmt.Errorf("ssh: host key mismatch") - } - return nil -} - -// FixedHostKey returns a function for use in -// ClientConfig.HostKeyCallback to accept only a specific host key. -func FixedHostKey(key PublicKey) HostKeyCallback { - hk := &fixedHostKey{key} - return hk.check -} - -// BannerDisplayStderr returns a function that can be used for -// ClientConfig.BannerCallback to display banners on os.Stderr. -func BannerDisplayStderr() BannerCallback { - return func(banner string) error { - _, err := os.Stderr.WriteString(banner) - - return err - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_auth.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_auth.go deleted file mode 100644 index a1252cb9b..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_auth.go +++ /dev/null @@ -1,510 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "errors" - "fmt" - "io" -) - -// clientAuthenticate authenticates with the remote server. See RFC 4252. -func (c *connection) clientAuthenticate(config *ClientConfig) error { - // initiate user auth session - if err := c.transport.writePacket(Marshal(&serviceRequestMsg{serviceUserAuth})); err != nil { - return err - } - packet, err := c.transport.readPacket() - if err != nil { - return err - } - var serviceAccept serviceAcceptMsg - if err := Unmarshal(packet, &serviceAccept); err != nil { - return err - } - - // during the authentication phase the client first attempts the "none" method - // then any untried methods suggested by the server. - tried := make(map[string]bool) - var lastMethods []string - - sessionID := c.transport.getSessionID() - for auth := AuthMethod(new(noneAuth)); auth != nil; { - ok, methods, err := auth.auth(sessionID, config.User, c.transport, config.Rand) - if err != nil { - return err - } - if ok { - // success - return nil - } - tried[auth.method()] = true - if methods == nil { - methods = lastMethods - } - lastMethods = methods - - auth = nil - - findNext: - for _, a := range config.Auth { - candidateMethod := a.method() - if tried[candidateMethod] { - continue - } - for _, meth := range methods { - if meth == candidateMethod { - auth = a - break findNext - } - } - } - } - return fmt.Errorf("ssh: unable to authenticate, attempted methods %v, no supported methods remain", keys(tried)) -} - -func keys(m map[string]bool) []string { - s := make([]string, 0, len(m)) - - for key := range m { - s = append(s, key) - } - return s -} - -// An AuthMethod represents an instance of an RFC 4252 authentication method. -type AuthMethod interface { - // auth authenticates user over transport t. - // Returns true if authentication is successful. - // If authentication is not successful, a []string of alternative - // method names is returned. If the slice is nil, it will be ignored - // and the previous set of possible methods will be reused. - auth(session []byte, user string, p packetConn, rand io.Reader) (bool, []string, error) - - // method returns the RFC 4252 method name. - method() string -} - -// "none" authentication, RFC 4252 section 5.2. -type noneAuth int - -func (n *noneAuth) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) { - if err := c.writePacket(Marshal(&userAuthRequestMsg{ - User: user, - Service: serviceSSH, - Method: "none", - })); err != nil { - return false, nil, err - } - - return handleAuthResponse(c) -} - -func (n *noneAuth) method() string { - return "none" -} - -// passwordCallback is an AuthMethod that fetches the password through -// a function call, e.g. by prompting the user. -type passwordCallback func() (password string, err error) - -func (cb passwordCallback) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) { - type passwordAuthMsg struct { - User string `sshtype:"50"` - Service string - Method string - Reply bool - Password string - } - - pw, err := cb() - // REVIEW NOTE: is there a need to support skipping a password attempt? - // The program may only find out that the user doesn't have a password - // when prompting. - if err != nil { - return false, nil, err - } - - if err := c.writePacket(Marshal(&passwordAuthMsg{ - User: user, - Service: serviceSSH, - Method: cb.method(), - Reply: false, - Password: pw, - })); err != nil { - return false, nil, err - } - - return handleAuthResponse(c) -} - -func (cb passwordCallback) method() string { - return "password" -} - -// Password returns an AuthMethod using the given password. -func Password(secret string) AuthMethod { - return passwordCallback(func() (string, error) { return secret, nil }) -} - -// PasswordCallback returns an AuthMethod that uses a callback for -// fetching a password. -func PasswordCallback(prompt func() (secret string, err error)) AuthMethod { - return passwordCallback(prompt) -} - -type publickeyAuthMsg struct { - User string `sshtype:"50"` - Service string - Method string - // HasSig indicates to the receiver packet that the auth request is signed and - // should be used for authentication of the request. - HasSig bool - Algoname string - PubKey []byte - // Sig is tagged with "rest" so Marshal will exclude it during - // validateKey - Sig []byte `ssh:"rest"` -} - -// publicKeyCallback is an AuthMethod that uses a set of key -// pairs for authentication. -type publicKeyCallback func() ([]Signer, error) - -func (cb publicKeyCallback) method() string { - return "publickey" -} - -func (cb publicKeyCallback) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) { - // Authentication is performed by sending an enquiry to test if a key is - // acceptable to the remote. If the key is acceptable, the client will - // attempt to authenticate with the valid key. If not the client will repeat - // the process with the remaining keys. - - signers, err := cb() - if err != nil { - return false, nil, err - } - var methods []string - for _, signer := range signers { - ok, err := validateKey(signer.PublicKey(), user, c) - if err != nil { - return false, nil, err - } - if !ok { - continue - } - - pub := signer.PublicKey() - pubKey := pub.Marshal() - sign, err := signer.Sign(rand, buildDataSignedForAuth(session, userAuthRequestMsg{ - User: user, - Service: serviceSSH, - Method: cb.method(), - }, []byte(pub.Type()), pubKey)) - if err != nil { - return false, nil, err - } - - // manually wrap the serialized signature in a string - s := Marshal(sign) - sig := make([]byte, stringLength(len(s))) - marshalString(sig, s) - msg := publickeyAuthMsg{ - User: user, - Service: serviceSSH, - Method: cb.method(), - HasSig: true, - Algoname: pub.Type(), - PubKey: pubKey, - Sig: sig, - } - p := Marshal(&msg) - if err := c.writePacket(p); err != nil { - return false, nil, err - } - var success bool - success, methods, err = handleAuthResponse(c) - if err != nil { - return false, nil, err - } - - // If authentication succeeds or the list of available methods does not - // contain the "publickey" method, do not attempt to authenticate with any - // other keys. According to RFC 4252 Section 7, the latter can occur when - // additional authentication methods are required. - if success || !containsMethod(methods, cb.method()) { - return success, methods, err - } - } - - return false, methods, nil -} - -func containsMethod(methods []string, method string) bool { - for _, m := range methods { - if m == method { - return true - } - } - - return false -} - -// validateKey validates the key provided is acceptable to the server. -func validateKey(key PublicKey, user string, c packetConn) (bool, error) { - pubKey := key.Marshal() - msg := publickeyAuthMsg{ - User: user, - Service: serviceSSH, - Method: "publickey", - HasSig: false, - Algoname: key.Type(), - PubKey: pubKey, - } - if err := c.writePacket(Marshal(&msg)); err != nil { - return false, err - } - - return confirmKeyAck(key, c) -} - -func confirmKeyAck(key PublicKey, c packetConn) (bool, error) { - pubKey := key.Marshal() - algoname := key.Type() - - for { - packet, err := c.readPacket() - if err != nil { - return false, err - } - switch packet[0] { - case msgUserAuthBanner: - if err := handleBannerResponse(c, packet); err != nil { - return false, err - } - case msgUserAuthPubKeyOk: - var msg userAuthPubKeyOkMsg - if err := Unmarshal(packet, &msg); err != nil { - return false, err - } - if msg.Algo != algoname || !bytes.Equal(msg.PubKey, pubKey) { - return false, nil - } - return true, nil - case msgUserAuthFailure: - return false, nil - default: - return false, unexpectedMessageError(msgUserAuthSuccess, packet[0]) - } - } -} - -// PublicKeys returns an AuthMethod that uses the given key -// pairs. -func PublicKeys(signers ...Signer) AuthMethod { - return publicKeyCallback(func() ([]Signer, error) { return signers, nil }) -} - -// PublicKeysCallback returns an AuthMethod that runs the given -// function to obtain a list of key pairs. -func PublicKeysCallback(getSigners func() (signers []Signer, err error)) AuthMethod { - return publicKeyCallback(getSigners) -} - -// handleAuthResponse returns whether the preceding authentication request succeeded -// along with a list of remaining authentication methods to try next and -// an error if an unexpected response was received. -func handleAuthResponse(c packetConn) (bool, []string, error) { - for { - packet, err := c.readPacket() - if err != nil { - return false, nil, err - } - - switch packet[0] { - case msgUserAuthBanner: - if err := handleBannerResponse(c, packet); err != nil { - return false, nil, err - } - case msgUserAuthFailure: - var msg userAuthFailureMsg - if err := Unmarshal(packet, &msg); err != nil { - return false, nil, err - } - return false, msg.Methods, nil - case msgUserAuthSuccess: - return true, nil, nil - default: - return false, nil, unexpectedMessageError(msgUserAuthSuccess, packet[0]) - } - } -} - -func handleBannerResponse(c packetConn, packet []byte) error { - var msg userAuthBannerMsg - if err := Unmarshal(packet, &msg); err != nil { - return err - } - - transport, ok := c.(*handshakeTransport) - if !ok { - return nil - } - - if transport.bannerCallback != nil { - return transport.bannerCallback(msg.Message) - } - - return nil -} - -// KeyboardInteractiveChallenge should print questions, optionally -// disabling echoing (e.g. for passwords), and return all the answers. -// Challenge may be called multiple times in a single session. After -// successful authentication, the server may send a challenge with no -// questions, for which the user and instruction messages should be -// printed. RFC 4256 section 3.3 details how the UI should behave for -// both CLI and GUI environments. -type KeyboardInteractiveChallenge func(user, instruction string, questions []string, echos []bool) (answers []string, err error) - -// KeyboardInteractive returns an AuthMethod using a prompt/response -// sequence controlled by the server. -func KeyboardInteractive(challenge KeyboardInteractiveChallenge) AuthMethod { - return challenge -} - -func (cb KeyboardInteractiveChallenge) method() string { - return "keyboard-interactive" -} - -func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) { - type initiateMsg struct { - User string `sshtype:"50"` - Service string - Method string - Language string - Submethods string - } - - if err := c.writePacket(Marshal(&initiateMsg{ - User: user, - Service: serviceSSH, - Method: "keyboard-interactive", - })); err != nil { - return false, nil, err - } - - for { - packet, err := c.readPacket() - if err != nil { - return false, nil, err - } - - // like handleAuthResponse, but with less options. - switch packet[0] { - case msgUserAuthBanner: - if err := handleBannerResponse(c, packet); err != nil { - return false, nil, err - } - continue - case msgUserAuthInfoRequest: - // OK - case msgUserAuthFailure: - var msg userAuthFailureMsg - if err := Unmarshal(packet, &msg); err != nil { - return false, nil, err - } - return false, msg.Methods, nil - case msgUserAuthSuccess: - return true, nil, nil - default: - return false, nil, unexpectedMessageError(msgUserAuthInfoRequest, packet[0]) - } - - var msg userAuthInfoRequestMsg - if err := Unmarshal(packet, &msg); err != nil { - return false, nil, err - } - - // Manually unpack the prompt/echo pairs. - rest := msg.Prompts - var prompts []string - var echos []bool - for i := 0; i < int(msg.NumPrompts); i++ { - prompt, r, ok := parseString(rest) - if !ok || len(r) == 0 { - return false, nil, errors.New("ssh: prompt format error") - } - prompts = append(prompts, string(prompt)) - echos = append(echos, r[0] != 0) - rest = r[1:] - } - - if len(rest) != 0 { - return false, nil, errors.New("ssh: extra data following keyboard-interactive pairs") - } - - answers, err := cb(msg.User, msg.Instruction, prompts, echos) - if err != nil { - return false, nil, err - } - - if len(answers) != len(prompts) { - return false, nil, errors.New("ssh: not enough answers from keyboard-interactive callback") - } - responseLength := 1 + 4 - for _, a := range answers { - responseLength += stringLength(len(a)) - } - serialized := make([]byte, responseLength) - p := serialized - p[0] = msgUserAuthInfoResponse - p = p[1:] - p = marshalUint32(p, uint32(len(answers))) - for _, a := range answers { - p = marshalString(p, []byte(a)) - } - - if err := c.writePacket(serialized); err != nil { - return false, nil, err - } - } -} - -type retryableAuthMethod struct { - authMethod AuthMethod - maxTries int -} - -func (r *retryableAuthMethod) auth(session []byte, user string, c packetConn, rand io.Reader) (ok bool, methods []string, err error) { - for i := 0; r.maxTries <= 0 || i < r.maxTries; i++ { - ok, methods, err = r.authMethod.auth(session, user, c, rand) - if ok || err != nil { // either success or error terminate - return ok, methods, err - } - } - return ok, methods, err -} - -func (r *retryableAuthMethod) method() string { - return r.authMethod.method() -} - -// RetryableAuthMethod is a decorator for other auth methods enabling them to -// be retried up to maxTries before considering that AuthMethod itself failed. -// If maxTries is <= 0, will retry indefinitely -// -// This is useful for interactive clients using challenge/response type -// authentication (e.g. Keyboard-Interactive, Password, etc) where the user -// could mistype their response resulting in the server issuing a -// SSH_MSG_USERAUTH_FAILURE (rfc4252 #8 [password] and rfc4256 #3.4 -// [keyboard-interactive]); Without this decorator, the non-retryable -// AuthMethod would be removed from future consideration, and never tried again -// (and so the user would never be able to retry their entry). -func RetryableAuthMethod(auth AuthMethod, maxTries int) AuthMethod { - return &retryableAuthMethod{authMethod: auth, maxTries: maxTries} -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_auth_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_auth_test.go deleted file mode 100644 index 145b57a2b..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_auth_test.go +++ /dev/null @@ -1,628 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "crypto/rand" - "errors" - "fmt" - "os" - "strings" - "testing" -) - -type keyboardInteractive map[string]string - -func (cr keyboardInteractive) Challenge(user string, instruction string, questions []string, echos []bool) ([]string, error) { - var answers []string - for _, q := range questions { - answers = append(answers, cr[q]) - } - return answers, nil -} - -// reused internally by tests -var clientPassword = "tiger" - -// tryAuth runs a handshake with a given config against an SSH server -// with config serverConfig -func tryAuth(t *testing.T, config *ClientConfig) error { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - certChecker := CertChecker{ - IsUserAuthority: func(k PublicKey) bool { - return bytes.Equal(k.Marshal(), testPublicKeys["ecdsa"].Marshal()) - }, - UserKeyFallback: func(conn ConnMetadata, key PublicKey) (*Permissions, error) { - if conn.User() == "testuser" && bytes.Equal(key.Marshal(), testPublicKeys["rsa"].Marshal()) { - return nil, nil - } - - return nil, fmt.Errorf("pubkey for %q not acceptable", conn.User()) - }, - IsRevoked: func(c *Certificate) bool { - return c.Serial == 666 - }, - } - - serverConfig := &ServerConfig{ - PasswordCallback: func(conn ConnMetadata, pass []byte) (*Permissions, error) { - if conn.User() == "testuser" && string(pass) == clientPassword { - return nil, nil - } - return nil, errors.New("password auth failed") - }, - PublicKeyCallback: certChecker.Authenticate, - KeyboardInteractiveCallback: func(conn ConnMetadata, challenge KeyboardInteractiveChallenge) (*Permissions, error) { - ans, err := challenge("user", - "instruction", - []string{"question1", "question2"}, - []bool{true, true}) - if err != nil { - return nil, err - } - ok := conn.User() == "testuser" && ans[0] == "answer1" && ans[1] == "answer2" - if ok { - challenge("user", "motd", nil, nil) - return nil, nil - } - return nil, errors.New("keyboard-interactive failed") - }, - } - serverConfig.AddHostKey(testSigners["rsa"]) - - go newServer(c1, serverConfig) - _, _, _, err = NewClientConn(c2, "", config) - return err -} - -func TestClientAuthPublicKey(t *testing.T) { - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(testSigners["rsa"]), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - if err := tryAuth(t, config); err != nil { - t.Fatalf("unable to dial remote side: %s", err) - } -} - -func TestAuthMethodPassword(t *testing.T) { - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - Password(clientPassword), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - - if err := tryAuth(t, config); err != nil { - t.Fatalf("unable to dial remote side: %s", err) - } -} - -func TestAuthMethodFallback(t *testing.T) { - var passwordCalled bool - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(testSigners["rsa"]), - PasswordCallback( - func() (string, error) { - passwordCalled = true - return "WRONG", nil - }), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - - if err := tryAuth(t, config); err != nil { - t.Fatalf("unable to dial remote side: %s", err) - } - - if passwordCalled { - t.Errorf("password auth tried before public-key auth.") - } -} - -func TestAuthMethodWrongPassword(t *testing.T) { - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - Password("wrong"), - PublicKeys(testSigners["rsa"]), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - - if err := tryAuth(t, config); err != nil { - t.Fatalf("unable to dial remote side: %s", err) - } -} - -func TestAuthMethodKeyboardInteractive(t *testing.T) { - answers := keyboardInteractive(map[string]string{ - "question1": "answer1", - "question2": "answer2", - }) - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - KeyboardInteractive(answers.Challenge), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - - if err := tryAuth(t, config); err != nil { - t.Fatalf("unable to dial remote side: %s", err) - } -} - -func TestAuthMethodWrongKeyboardInteractive(t *testing.T) { - answers := keyboardInteractive(map[string]string{ - "question1": "answer1", - "question2": "WRONG", - }) - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - KeyboardInteractive(answers.Challenge), - }, - } - - if err := tryAuth(t, config); err == nil { - t.Fatalf("wrong answers should not have authenticated with KeyboardInteractive") - } -} - -// the mock server will only authenticate ssh-rsa keys -func TestAuthMethodInvalidPublicKey(t *testing.T) { - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(testSigners["dsa"]), - }, - } - - if err := tryAuth(t, config); err == nil { - t.Fatalf("dsa private key should not have authenticated with rsa public key") - } -} - -// the client should authenticate with the second key -func TestAuthMethodRSAandDSA(t *testing.T) { - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(testSigners["dsa"], testSigners["rsa"]), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - if err := tryAuth(t, config); err != nil { - t.Fatalf("client could not authenticate with rsa key: %v", err) - } -} - -func TestClientHMAC(t *testing.T) { - for _, mac := range supportedMACs { - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(testSigners["rsa"]), - }, - Config: Config{ - MACs: []string{mac}, - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - if err := tryAuth(t, config); err != nil { - t.Fatalf("client could not authenticate with mac algo %s: %v", mac, err) - } - } -} - -// issue 4285. -func TestClientUnsupportedCipher(t *testing.T) { - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(), - }, - Config: Config{ - Ciphers: []string{"aes128-cbc"}, // not currently supported - }, - } - if err := tryAuth(t, config); err == nil { - t.Errorf("expected no ciphers in common") - } -} - -func TestClientUnsupportedKex(t *testing.T) { - if os.Getenv("GO_BUILDER_NAME") != "" { - t.Skip("skipping known-flaky test on the Go build dashboard; see golang.org/issue/15198") - } - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(), - }, - Config: Config{ - KeyExchanges: []string{"diffie-hellman-group-exchange-sha256"}, // not currently supported - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - if err := tryAuth(t, config); err == nil || !strings.Contains(err.Error(), "common algorithm") { - t.Errorf("got %v, expected 'common algorithm'", err) - } -} - -func TestClientLoginCert(t *testing.T) { - cert := &Certificate{ - Key: testPublicKeys["rsa"], - ValidBefore: CertTimeInfinity, - CertType: UserCert, - } - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - certSigner, err := NewCertSigner(cert, testSigners["rsa"]) - if err != nil { - t.Fatalf("NewCertSigner: %v", err) - } - - clientConfig := &ClientConfig{ - User: "user", - HostKeyCallback: InsecureIgnoreHostKey(), - } - clientConfig.Auth = append(clientConfig.Auth, PublicKeys(certSigner)) - - // should succeed - if err := tryAuth(t, clientConfig); err != nil { - t.Errorf("cert login failed: %v", err) - } - - // corrupted signature - cert.Signature.Blob[0]++ - if err := tryAuth(t, clientConfig); err == nil { - t.Errorf("cert login passed with corrupted sig") - } - - // revoked - cert.Serial = 666 - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - if err := tryAuth(t, clientConfig); err == nil { - t.Errorf("revoked cert login succeeded") - } - cert.Serial = 1 - - // sign with wrong key - cert.SignCert(rand.Reader, testSigners["dsa"]) - if err := tryAuth(t, clientConfig); err == nil { - t.Errorf("cert login passed with non-authoritative key") - } - - // host cert - cert.CertType = HostCert - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - if err := tryAuth(t, clientConfig); err == nil { - t.Errorf("cert login passed with wrong type") - } - cert.CertType = UserCert - - // principal specified - cert.ValidPrincipals = []string{"user"} - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - if err := tryAuth(t, clientConfig); err != nil { - t.Errorf("cert login failed: %v", err) - } - - // wrong principal specified - cert.ValidPrincipals = []string{"fred"} - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - if err := tryAuth(t, clientConfig); err == nil { - t.Errorf("cert login passed with wrong principal") - } - cert.ValidPrincipals = nil - - // added critical option - cert.CriticalOptions = map[string]string{"root-access": "yes"} - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - if err := tryAuth(t, clientConfig); err == nil { - t.Errorf("cert login passed with unrecognized critical option") - } - - // allowed source address - cert.CriticalOptions = map[string]string{"source-address": "127.0.0.42/24,::42/120"} - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - if err := tryAuth(t, clientConfig); err != nil { - t.Errorf("cert login with source-address failed: %v", err) - } - - // disallowed source address - cert.CriticalOptions = map[string]string{"source-address": "127.0.0.42,::42"} - cert.SignCert(rand.Reader, testSigners["ecdsa"]) - if err := tryAuth(t, clientConfig); err == nil { - t.Errorf("cert login with source-address succeeded") - } -} - -func testPermissionsPassing(withPermissions bool, t *testing.T) { - serverConfig := &ServerConfig{ - PublicKeyCallback: func(conn ConnMetadata, key PublicKey) (*Permissions, error) { - if conn.User() == "nopermissions" { - return nil, nil - } - return &Permissions{}, nil - }, - } - serverConfig.AddHostKey(testSigners["rsa"]) - - clientConfig := &ClientConfig{ - Auth: []AuthMethod{ - PublicKeys(testSigners["rsa"]), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - if withPermissions { - clientConfig.User = "permissions" - } else { - clientConfig.User = "nopermissions" - } - - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - go NewClientConn(c2, "", clientConfig) - serverConn, err := newServer(c1, serverConfig) - if err != nil { - t.Fatal(err) - } - if p := serverConn.Permissions; (p != nil) != withPermissions { - t.Fatalf("withPermissions is %t, but Permissions object is %#v", withPermissions, p) - } -} - -func TestPermissionsPassing(t *testing.T) { - testPermissionsPassing(true, t) -} - -func TestNoPermissionsPassing(t *testing.T) { - testPermissionsPassing(false, t) -} - -func TestRetryableAuth(t *testing.T) { - n := 0 - passwords := []string{"WRONG1", "WRONG2"} - - config := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - RetryableAuthMethod(PasswordCallback(func() (string, error) { - p := passwords[n] - n++ - return p, nil - }), 2), - PublicKeys(testSigners["rsa"]), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - - if err := tryAuth(t, config); err != nil { - t.Fatalf("unable to dial remote side: %s", err) - } - if n != 2 { - t.Fatalf("Did not try all passwords") - } -} - -func ExampleRetryableAuthMethod(t *testing.T) { - user := "testuser" - NumberOfPrompts := 3 - - // Normally this would be a callback that prompts the user to answer the - // provided questions - Cb := func(user, instruction string, questions []string, echos []bool) (answers []string, err error) { - return []string{"answer1", "answer2"}, nil - } - - config := &ClientConfig{ - HostKeyCallback: InsecureIgnoreHostKey(), - User: user, - Auth: []AuthMethod{ - RetryableAuthMethod(KeyboardInteractiveChallenge(Cb), NumberOfPrompts), - }, - } - - if err := tryAuth(t, config); err != nil { - t.Fatalf("unable to dial remote side: %s", err) - } -} - -// Test if username is received on server side when NoClientAuth is used -func TestClientAuthNone(t *testing.T) { - user := "testuser" - serverConfig := &ServerConfig{ - NoClientAuth: true, - } - serverConfig.AddHostKey(testSigners["rsa"]) - - clientConfig := &ClientConfig{ - User: user, - HostKeyCallback: InsecureIgnoreHostKey(), - } - - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - go NewClientConn(c2, "", clientConfig) - serverConn, err := newServer(c1, serverConfig) - if err != nil { - t.Fatalf("newServer: %v", err) - } - if serverConn.User() != user { - t.Fatalf("server: got %q, want %q", serverConn.User(), user) - } -} - -// Test if authentication attempts are limited on server when MaxAuthTries is set -func TestClientAuthMaxAuthTries(t *testing.T) { - user := "testuser" - - serverConfig := &ServerConfig{ - MaxAuthTries: 2, - PasswordCallback: func(conn ConnMetadata, pass []byte) (*Permissions, error) { - if conn.User() == "testuser" && string(pass) == "right" { - return nil, nil - } - return nil, errors.New("password auth failed") - }, - } - serverConfig.AddHostKey(testSigners["rsa"]) - - expectedErr := fmt.Errorf("ssh: handshake failed: %v", &disconnectMsg{ - Reason: 2, - Message: "too many authentication failures", - }) - - for tries := 2; tries < 4; tries++ { - n := tries - clientConfig := &ClientConfig{ - User: user, - Auth: []AuthMethod{ - RetryableAuthMethod(PasswordCallback(func() (string, error) { - n-- - if n == 0 { - return "right", nil - } - return "wrong", nil - }), tries), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - go newServer(c1, serverConfig) - _, _, _, err = NewClientConn(c2, "", clientConfig) - if tries > 2 { - if err == nil { - t.Fatalf("client: got no error, want %s", expectedErr) - } else if err.Error() != expectedErr.Error() { - t.Fatalf("client: got %s, want %s", err, expectedErr) - } - } else { - if err != nil { - t.Fatalf("client: got %s, want no error", err) - } - } - } -} - -// Test if authentication attempts are correctly limited on server -// when more public keys are provided then MaxAuthTries -func TestClientAuthMaxAuthTriesPublicKey(t *testing.T) { - signers := []Signer{} - for i := 0; i < 6; i++ { - signers = append(signers, testSigners["dsa"]) - } - - validConfig := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(append([]Signer{testSigners["rsa"]}, signers...)...), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - if err := tryAuth(t, validConfig); err != nil { - t.Fatalf("unable to dial remote side: %s", err) - } - - expectedErr := fmt.Errorf("ssh: handshake failed: %v", &disconnectMsg{ - Reason: 2, - Message: "too many authentication failures", - }) - invalidConfig := &ClientConfig{ - User: "testuser", - Auth: []AuthMethod{ - PublicKeys(append(signers, testSigners["rsa"])...), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - if err := tryAuth(t, invalidConfig); err == nil { - t.Fatalf("client: got no error, want %s", expectedErr) - } else if err.Error() != expectedErr.Error() { - t.Fatalf("client: got %s, want %s", err, expectedErr) - } -} - -// Test whether authentication errors are being properly logged if all -// authentication methods have been exhausted -func TestClientAuthErrorList(t *testing.T) { - publicKeyErr := errors.New("This is an error from PublicKeyCallback") - - clientConfig := &ClientConfig{ - Auth: []AuthMethod{ - PublicKeys(testSigners["rsa"]), - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - serverConfig := &ServerConfig{ - PublicKeyCallback: func(_ ConnMetadata, _ PublicKey) (*Permissions, error) { - return nil, publicKeyErr - }, - } - serverConfig.AddHostKey(testSigners["rsa"]) - - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - go NewClientConn(c2, "", clientConfig) - _, err = newServer(c1, serverConfig) - if err == nil { - t.Fatal("newServer: got nil, expected errors") - } - - authErrs, ok := err.(*ServerAuthError) - if !ok { - t.Fatalf("errors: got %T, want *ssh.ServerAuthError", err) - } - for i, e := range authErrs.Errors { - switch i { - case 0: - if e.Error() != "no auth passed yet" { - t.Fatalf("errors: got %v, want no auth passed yet", e.Error()) - } - case 1: - if e != publicKeyErr { - t.Fatalf("errors: got %v, want %v", e, publicKeyErr) - } - default: - t.Fatalf("errors: got %v, expected 2 errors", authErrs.Errors) - } - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_test.go deleted file mode 100644 index 9dbe04222..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/client_test.go +++ /dev/null @@ -1,119 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "net" - "strings" - "testing" -) - -func testClientVersion(t *testing.T, config *ClientConfig, expected string) { - clientConn, serverConn := net.Pipe() - defer clientConn.Close() - receivedVersion := make(chan string, 1) - config.HostKeyCallback = InsecureIgnoreHostKey() - go func() { - version, err := readVersion(serverConn) - if err != nil { - receivedVersion <- "" - } else { - receivedVersion <- string(version) - } - serverConn.Close() - }() - NewClientConn(clientConn, "", config) - actual := <-receivedVersion - if actual != expected { - t.Fatalf("got %s; want %s", actual, expected) - } -} - -func TestCustomClientVersion(t *testing.T) { - version := "Test-Client-Version-0.0" - testClientVersion(t, &ClientConfig{ClientVersion: version}, version) -} - -func TestDefaultClientVersion(t *testing.T) { - testClientVersion(t, &ClientConfig{}, packageVersion) -} - -func TestHostKeyCheck(t *testing.T) { - for _, tt := range []struct { - name string - wantError string - key PublicKey - }{ - {"no callback", "must specify HostKeyCallback", nil}, - {"correct key", "", testSigners["rsa"].PublicKey()}, - {"mismatch", "mismatch", testSigners["ecdsa"].PublicKey()}, - } { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - serverConf := &ServerConfig{ - NoClientAuth: true, - } - serverConf.AddHostKey(testSigners["rsa"]) - - go NewServerConn(c1, serverConf) - clientConf := ClientConfig{ - User: "user", - } - if tt.key != nil { - clientConf.HostKeyCallback = FixedHostKey(tt.key) - } - - _, _, _, err = NewClientConn(c2, "", &clientConf) - if err != nil { - if tt.wantError == "" || !strings.Contains(err.Error(), tt.wantError) { - t.Errorf("%s: got error %q, missing %q", tt.name, err.Error(), tt.wantError) - } - } else if tt.wantError != "" { - t.Errorf("%s: succeeded, but want error string %q", tt.name, tt.wantError) - } - } -} - -func TestBannerCallback(t *testing.T) { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - serverConf := &ServerConfig{ - NoClientAuth: true, - BannerCallback: func(conn ConnMetadata) string { - return "Hello World" - }, - } - serverConf.AddHostKey(testSigners["rsa"]) - go NewServerConn(c1, serverConf) - - var receivedBanner string - clientConf := ClientConfig{ - User: "user", - HostKeyCallback: InsecureIgnoreHostKey(), - BannerCallback: func(message string) error { - receivedBanner = message - return nil - }, - } - - _, _, _, err = NewClientConn(c2, "", &clientConf) - if err != nil { - t.Fatal(err) - } - - expected := "Hello World" - if receivedBanner != expected { - t.Fatalf("got %s; want %s", receivedBanner, expected) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/common.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/common.go deleted file mode 100644 index dc39e4d23..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/common.go +++ /dev/null @@ -1,373 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "crypto" - "crypto/rand" - "fmt" - "io" - "math" - "sync" - - _ "crypto/sha1" - _ "crypto/sha256" - _ "crypto/sha512" -) - -// These are string constants in the SSH protocol. -const ( - compressionNone = "none" - serviceUserAuth = "ssh-userauth" - serviceSSH = "ssh-connection" -) - -// supportedCiphers specifies the supported ciphers in preference order. -var supportedCiphers = []string{ - "aes128-ctr", "aes192-ctr", "aes256-ctr", - "aes128-gcm@openssh.com", - "arcfour256", "arcfour128", -} - -// supportedKexAlgos specifies the supported key-exchange algorithms in -// preference order. -var supportedKexAlgos = []string{ - kexAlgoCurve25519SHA256, - // P384 and P521 are not constant-time yet, but since we don't - // reuse ephemeral keys, using them for ECDH should be OK. - kexAlgoECDH256, kexAlgoECDH384, kexAlgoECDH521, - kexAlgoDH14SHA1, kexAlgoDH1SHA1, -} - -// supportedHostKeyAlgos specifies the supported host-key algorithms (i.e. methods -// of authenticating servers) in preference order. -var supportedHostKeyAlgos = []string{ - CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, - CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoED25519v01, - - KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521, - KeyAlgoRSA, KeyAlgoDSA, - - KeyAlgoED25519, -} - -// supportedMACs specifies a default set of MAC algorithms in preference order. -// This is based on RFC 4253, section 6.4, but with hmac-md5 variants removed -// because they have reached the end of their useful life. -var supportedMACs = []string{ - "hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1", "hmac-sha1-96", -} - -var supportedCompressions = []string{compressionNone} - -// hashFuncs keeps the mapping of supported algorithms to their respective -// hashes needed for signature verification. -var hashFuncs = map[string]crypto.Hash{ - KeyAlgoRSA: crypto.SHA1, - KeyAlgoDSA: crypto.SHA1, - KeyAlgoECDSA256: crypto.SHA256, - KeyAlgoECDSA384: crypto.SHA384, - KeyAlgoECDSA521: crypto.SHA512, - CertAlgoRSAv01: crypto.SHA1, - CertAlgoDSAv01: crypto.SHA1, - CertAlgoECDSA256v01: crypto.SHA256, - CertAlgoECDSA384v01: crypto.SHA384, - CertAlgoECDSA521v01: crypto.SHA512, -} - -// unexpectedMessageError results when the SSH message that we received didn't -// match what we wanted. -func unexpectedMessageError(expected, got uint8) error { - return fmt.Errorf("ssh: unexpected message type %d (expected %d)", got, expected) -} - -// parseError results from a malformed SSH message. -func parseError(tag uint8) error { - return fmt.Errorf("ssh: parse error in message type %d", tag) -} - -func findCommon(what string, client []string, server []string) (common string, err error) { - for _, c := range client { - for _, s := range server { - if c == s { - return c, nil - } - } - } - return "", fmt.Errorf("ssh: no common algorithm for %s; client offered: %v, server offered: %v", what, client, server) -} - -type directionAlgorithms struct { - Cipher string - MAC string - Compression string -} - -// rekeyBytes returns a rekeying intervals in bytes. -func (a *directionAlgorithms) rekeyBytes() int64 { - // According to RFC4344 block ciphers should rekey after - // 2^(BLOCKSIZE/4) blocks. For all AES flavors BLOCKSIZE is - // 128. - switch a.Cipher { - case "aes128-ctr", "aes192-ctr", "aes256-ctr", gcmCipherID, aes128cbcID: - return 16 * (1 << 32) - - } - - // For others, stick with RFC4253 recommendation to rekey after 1 Gb of data. - return 1 << 30 -} - -type algorithms struct { - kex string - hostKey string - w directionAlgorithms - r directionAlgorithms -} - -func findAgreedAlgorithms(clientKexInit, serverKexInit *kexInitMsg) (algs *algorithms, err error) { - result := &algorithms{} - - result.kex, err = findCommon("key exchange", clientKexInit.KexAlgos, serverKexInit.KexAlgos) - if err != nil { - return - } - - result.hostKey, err = findCommon("host key", clientKexInit.ServerHostKeyAlgos, serverKexInit.ServerHostKeyAlgos) - if err != nil { - return - } - - result.w.Cipher, err = findCommon("client to server cipher", clientKexInit.CiphersClientServer, serverKexInit.CiphersClientServer) - if err != nil { - return - } - - result.r.Cipher, err = findCommon("server to client cipher", clientKexInit.CiphersServerClient, serverKexInit.CiphersServerClient) - if err != nil { - return - } - - result.w.MAC, err = findCommon("client to server MAC", clientKexInit.MACsClientServer, serverKexInit.MACsClientServer) - if err != nil { - return - } - - result.r.MAC, err = findCommon("server to client MAC", clientKexInit.MACsServerClient, serverKexInit.MACsServerClient) - if err != nil { - return - } - - result.w.Compression, err = findCommon("client to server compression", clientKexInit.CompressionClientServer, serverKexInit.CompressionClientServer) - if err != nil { - return - } - - result.r.Compression, err = findCommon("server to client compression", clientKexInit.CompressionServerClient, serverKexInit.CompressionServerClient) - if err != nil { - return - } - - return result, nil -} - -// If rekeythreshold is too small, we can't make any progress sending -// stuff. -const minRekeyThreshold uint64 = 256 - -// Config contains configuration data common to both ServerConfig and -// ClientConfig. -type Config struct { - // Rand provides the source of entropy for cryptographic - // primitives. If Rand is nil, the cryptographic random reader - // in package crypto/rand will be used. - Rand io.Reader - - // The maximum number of bytes sent or received after which a - // new key is negotiated. It must be at least 256. If - // unspecified, a size suitable for the chosen cipher is used. - RekeyThreshold uint64 - - // The allowed key exchanges algorithms. If unspecified then a - // default set of algorithms is used. - KeyExchanges []string - - // The allowed cipher algorithms. If unspecified then a sensible - // default is used. - Ciphers []string - - // The allowed MAC algorithms. If unspecified then a sensible default - // is used. - MACs []string -} - -// SetDefaults sets sensible values for unset fields in config. This is -// exported for testing: Configs passed to SSH functions are copied and have -// default values set automatically. -func (c *Config) SetDefaults() { - if c.Rand == nil { - c.Rand = rand.Reader - } - if c.Ciphers == nil { - c.Ciphers = supportedCiphers - } - var ciphers []string - for _, c := range c.Ciphers { - if cipherModes[c] != nil { - // reject the cipher if we have no cipherModes definition - ciphers = append(ciphers, c) - } - } - c.Ciphers = ciphers - - if c.KeyExchanges == nil { - c.KeyExchanges = supportedKexAlgos - } - - if c.MACs == nil { - c.MACs = supportedMACs - } - - if c.RekeyThreshold == 0 { - // cipher specific default - } else if c.RekeyThreshold < minRekeyThreshold { - c.RekeyThreshold = minRekeyThreshold - } else if c.RekeyThreshold >= math.MaxInt64 { - // Avoid weirdness if somebody uses -1 as a threshold. - c.RekeyThreshold = math.MaxInt64 - } -} - -// buildDataSignedForAuth returns the data that is signed in order to prove -// possession of a private key. See RFC 4252, section 7. -func buildDataSignedForAuth(sessionId []byte, req userAuthRequestMsg, algo, pubKey []byte) []byte { - data := struct { - Session []byte - Type byte - User string - Service string - Method string - Sign bool - Algo []byte - PubKey []byte - }{ - sessionId, - msgUserAuthRequest, - req.User, - req.Service, - req.Method, - true, - algo, - pubKey, - } - return Marshal(data) -} - -func appendU16(buf []byte, n uint16) []byte { - return append(buf, byte(n>>8), byte(n)) -} - -func appendU32(buf []byte, n uint32) []byte { - return append(buf, byte(n>>24), byte(n>>16), byte(n>>8), byte(n)) -} - -func appendU64(buf []byte, n uint64) []byte { - return append(buf, - byte(n>>56), byte(n>>48), byte(n>>40), byte(n>>32), - byte(n>>24), byte(n>>16), byte(n>>8), byte(n)) -} - -func appendInt(buf []byte, n int) []byte { - return appendU32(buf, uint32(n)) -} - -func appendString(buf []byte, s string) []byte { - buf = appendU32(buf, uint32(len(s))) - buf = append(buf, s...) - return buf -} - -func appendBool(buf []byte, b bool) []byte { - if b { - return append(buf, 1) - } - return append(buf, 0) -} - -// newCond is a helper to hide the fact that there is no usable zero -// value for sync.Cond. -func newCond() *sync.Cond { return sync.NewCond(new(sync.Mutex)) } - -// window represents the buffer available to clients -// wishing to write to a channel. -type window struct { - *sync.Cond - win uint32 // RFC 4254 5.2 says the window size can grow to 2^32-1 - writeWaiters int - closed bool -} - -// add adds win to the amount of window available -// for consumers. -func (w *window) add(win uint32) bool { - // a zero sized window adjust is a noop. - if win == 0 { - return true - } - w.L.Lock() - if w.win+win < win { - w.L.Unlock() - return false - } - w.win += win - // It is unusual that multiple goroutines would be attempting to reserve - // window space, but not guaranteed. Use broadcast to notify all waiters - // that additional window is available. - w.Broadcast() - w.L.Unlock() - return true -} - -// close sets the window to closed, so all reservations fail -// immediately. -func (w *window) close() { - w.L.Lock() - w.closed = true - w.Broadcast() - w.L.Unlock() -} - -// reserve reserves win from the available window capacity. -// If no capacity remains, reserve will block. reserve may -// return less than requested. -func (w *window) reserve(win uint32) (uint32, error) { - var err error - w.L.Lock() - w.writeWaiters++ - w.Broadcast() - for w.win == 0 && !w.closed { - w.Wait() - } - w.writeWaiters-- - if w.win < win { - win = w.win - } - w.win -= win - if w.closed { - err = io.EOF - } - w.L.Unlock() - return win, err -} - -// waitWriterBlocked waits until some goroutine is blocked for further -// writes. It is used in tests only. -func (w *window) waitWriterBlocked() { - w.Cond.L.Lock() - for w.writeWaiters == 0 { - w.Cond.Wait() - } - w.Cond.L.Unlock() -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/connection.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/connection.go deleted file mode 100644 index fd6b0681b..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/connection.go +++ /dev/null @@ -1,143 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "fmt" - "net" -) - -// OpenChannelError is returned if the other side rejects an -// OpenChannel request. -type OpenChannelError struct { - Reason RejectionReason - Message string -} - -func (e *OpenChannelError) Error() string { - return fmt.Sprintf("ssh: rejected: %s (%s)", e.Reason, e.Message) -} - -// ConnMetadata holds metadata for the connection. -type ConnMetadata interface { - // User returns the user ID for this connection. - User() string - - // SessionID returns the session hash, also denoted by H. - SessionID() []byte - - // ClientVersion returns the client's version string as hashed - // into the session ID. - ClientVersion() []byte - - // ServerVersion returns the server's version string as hashed - // into the session ID. - ServerVersion() []byte - - // RemoteAddr returns the remote address for this connection. - RemoteAddr() net.Addr - - // LocalAddr returns the local address for this connection. - LocalAddr() net.Addr -} - -// Conn represents an SSH connection for both server and client roles. -// Conn is the basis for implementing an application layer, such -// as ClientConn, which implements the traditional shell access for -// clients. -type Conn interface { - ConnMetadata - - // SendRequest sends a global request, and returns the - // reply. If wantReply is true, it returns the response status - // and payload. See also RFC4254, section 4. - SendRequest(name string, wantReply bool, payload []byte) (bool, []byte, error) - - // OpenChannel tries to open an channel. If the request is - // rejected, it returns *OpenChannelError. On success it returns - // the SSH Channel and a Go channel for incoming, out-of-band - // requests. The Go channel must be serviced, or the - // connection will hang. - OpenChannel(name string, data []byte) (Channel, <-chan *Request, error) - - // Close closes the underlying network connection - Close() error - - // Wait blocks until the connection has shut down, and returns the - // error causing the shutdown. - Wait() error - - // TODO(hanwen): consider exposing: - // RequestKeyChange - // Disconnect -} - -// DiscardRequests consumes and rejects all requests from the -// passed-in channel. -func DiscardRequests(in <-chan *Request) { - for req := range in { - if req.WantReply { - req.Reply(false, nil) - } - } -} - -// A connection represents an incoming connection. -type connection struct { - transport *handshakeTransport - sshConn - - // The connection protocol. - *mux -} - -func (c *connection) Close() error { - return c.sshConn.conn.Close() -} - -// sshconn provides net.Conn metadata, but disallows direct reads and -// writes. -type sshConn struct { - conn net.Conn - - user string - sessionID []byte - clientVersion []byte - serverVersion []byte -} - -func dup(src []byte) []byte { - dst := make([]byte, len(src)) - copy(dst, src) - return dst -} - -func (c *sshConn) User() string { - return c.user -} - -func (c *sshConn) RemoteAddr() net.Addr { - return c.conn.RemoteAddr() -} - -func (c *sshConn) Close() error { - return c.conn.Close() -} - -func (c *sshConn) LocalAddr() net.Addr { - return c.conn.LocalAddr() -} - -func (c *sshConn) SessionID() []byte { - return dup(c.sessionID) -} - -func (c *sshConn) ClientVersion() []byte { - return dup(c.clientVersion) -} - -func (c *sshConn) ServerVersion() []byte { - return dup(c.serverVersion) -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/doc.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/doc.go deleted file mode 100644 index 67b7322c0..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/doc.go +++ /dev/null @@ -1,21 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -/* -Package ssh implements an SSH client and server. - -SSH is a transport security protocol, an authentication protocol and a -family of application protocols. The most typical application level -protocol is a remote shell and this is specifically implemented. However, -the multiplexed nature of SSH is exposed to users that wish to support -others. - -References: - [PROTOCOL.certkeys]: http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.certkeys?rev=HEAD - [SSH-PARAMETERS]: http://www.iana.org/assignments/ssh-parameters/ssh-parameters.xml#ssh-parameters-1 - -This package does not fall under the stability promise of the Go language itself, -so its API may be changed when pressing needs arise. -*/ -package ssh // import "golang.org/x/crypto/ssh" diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/example_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/example_test.go deleted file mode 100644 index b910c7bf6..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/example_test.go +++ /dev/null @@ -1,320 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh_test - -import ( - "bufio" - "bytes" - "fmt" - "io/ioutil" - "log" - "net" - "net/http" - "os" - "path/filepath" - "strings" - - "golang.org/x/crypto/ssh" - "golang.org/x/crypto/ssh/terminal" -) - -func ExampleNewServerConn() { - // Public key authentication is done by comparing - // the public key of a received connection - // with the entries in the authorized_keys file. - authorizedKeysBytes, err := ioutil.ReadFile("authorized_keys") - if err != nil { - log.Fatalf("Failed to load authorized_keys, err: %v", err) - } - - authorizedKeysMap := map[string]bool{} - for len(authorizedKeysBytes) > 0 { - pubKey, _, _, rest, err := ssh.ParseAuthorizedKey(authorizedKeysBytes) - if err != nil { - log.Fatal(err) - } - - authorizedKeysMap[string(pubKey.Marshal())] = true - authorizedKeysBytes = rest - } - - // An SSH server is represented by a ServerConfig, which holds - // certificate details and handles authentication of ServerConns. - config := &ssh.ServerConfig{ - // Remove to disable password auth. - PasswordCallback: func(c ssh.ConnMetadata, pass []byte) (*ssh.Permissions, error) { - // Should use constant-time compare (or better, salt+hash) in - // a production setting. - if c.User() == "testuser" && string(pass) == "tiger" { - return nil, nil - } - return nil, fmt.Errorf("password rejected for %q", c.User()) - }, - - // Remove to disable public key auth. - PublicKeyCallback: func(c ssh.ConnMetadata, pubKey ssh.PublicKey) (*ssh.Permissions, error) { - if authorizedKeysMap[string(pubKey.Marshal())] { - return &ssh.Permissions{ - // Record the public key used for authentication. - Extensions: map[string]string{ - "pubkey-fp": ssh.FingerprintSHA256(pubKey), - }, - }, nil - } - return nil, fmt.Errorf("unknown public key for %q", c.User()) - }, - } - - privateBytes, err := ioutil.ReadFile("id_rsa") - if err != nil { - log.Fatal("Failed to load private key: ", err) - } - - private, err := ssh.ParsePrivateKey(privateBytes) - if err != nil { - log.Fatal("Failed to parse private key: ", err) - } - - config.AddHostKey(private) - - // Once a ServerConfig has been configured, connections can be - // accepted. - listener, err := net.Listen("tcp", "0.0.0.0:2022") - if err != nil { - log.Fatal("failed to listen for connection: ", err) - } - nConn, err := listener.Accept() - if err != nil { - log.Fatal("failed to accept incoming connection: ", err) - } - - // Before use, a handshake must be performed on the incoming - // net.Conn. - conn, chans, reqs, err := ssh.NewServerConn(nConn, config) - if err != nil { - log.Fatal("failed to handshake: ", err) - } - log.Printf("logged in with key %s", conn.Permissions.Extensions["pubkey-fp"]) - - // The incoming Request channel must be serviced. - go ssh.DiscardRequests(reqs) - - // Service the incoming Channel channel. - for newChannel := range chans { - // Channels have a type, depending on the application level - // protocol intended. In the case of a shell, the type is - // "session" and ServerShell may be used to present a simple - // terminal interface. - if newChannel.ChannelType() != "session" { - newChannel.Reject(ssh.UnknownChannelType, "unknown channel type") - continue - } - channel, requests, err := newChannel.Accept() - if err != nil { - log.Fatalf("Could not accept channel: %v", err) - } - - // Sessions have out-of-band requests such as "shell", - // "pty-req" and "env". Here we handle only the - // "shell" request. - go func(in <-chan *ssh.Request) { - for req := range in { - req.Reply(req.Type == "shell", nil) - } - }(requests) - - term := terminal.NewTerminal(channel, "> ") - - go func() { - defer channel.Close() - for { - line, err := term.ReadLine() - if err != nil { - break - } - fmt.Println(line) - } - }() - } -} - -func ExampleHostKeyCheck() { - // Every client must provide a host key check. Here is a - // simple-minded parse of OpenSSH's known_hosts file - host := "hostname" - file, err := os.Open(filepath.Join(os.Getenv("HOME"), ".ssh", "known_hosts")) - if err != nil { - log.Fatal(err) - } - defer file.Close() - - scanner := bufio.NewScanner(file) - var hostKey ssh.PublicKey - for scanner.Scan() { - fields := strings.Split(scanner.Text(), " ") - if len(fields) != 3 { - continue - } - if strings.Contains(fields[0], host) { - var err error - hostKey, _, _, _, err = ssh.ParseAuthorizedKey(scanner.Bytes()) - if err != nil { - log.Fatalf("error parsing %q: %v", fields[2], err) - } - break - } - } - - if hostKey == nil { - log.Fatalf("no hostkey for %s", host) - } - - config := ssh.ClientConfig{ - User: os.Getenv("USER"), - HostKeyCallback: ssh.FixedHostKey(hostKey), - } - - _, err = ssh.Dial("tcp", host+":22", &config) - log.Println(err) -} - -func ExampleDial() { - var hostKey ssh.PublicKey - // An SSH client is represented with a ClientConn. - // - // To authenticate with the remote server you must pass at least one - // implementation of AuthMethod via the Auth field in ClientConfig, - // and provide a HostKeyCallback. - config := &ssh.ClientConfig{ - User: "username", - Auth: []ssh.AuthMethod{ - ssh.Password("yourpassword"), - }, - HostKeyCallback: ssh.FixedHostKey(hostKey), - } - client, err := ssh.Dial("tcp", "yourserver.com:22", config) - if err != nil { - log.Fatal("Failed to dial: ", err) - } - - // Each ClientConn can support multiple interactive sessions, - // represented by a Session. - session, err := client.NewSession() - if err != nil { - log.Fatal("Failed to create session: ", err) - } - defer session.Close() - - // Once a Session is created, you can execute a single command on - // the remote side using the Run method. - var b bytes.Buffer - session.Stdout = &b - if err := session.Run("/usr/bin/whoami"); err != nil { - log.Fatal("Failed to run: " + err.Error()) - } - fmt.Println(b.String()) -} - -func ExamplePublicKeys() { - var hostKey ssh.PublicKey - // A public key may be used to authenticate against the remote - // server by using an unencrypted PEM-encoded private key file. - // - // If you have an encrypted private key, the crypto/x509 package - // can be used to decrypt it. - key, err := ioutil.ReadFile("/home/user/.ssh/id_rsa") - if err != nil { - log.Fatalf("unable to read private key: %v", err) - } - - // Create the Signer for this private key. - signer, err := ssh.ParsePrivateKey(key) - if err != nil { - log.Fatalf("unable to parse private key: %v", err) - } - - config := &ssh.ClientConfig{ - User: "user", - Auth: []ssh.AuthMethod{ - // Use the PublicKeys method for remote authentication. - ssh.PublicKeys(signer), - }, - HostKeyCallback: ssh.FixedHostKey(hostKey), - } - - // Connect to the remote server and perform the SSH handshake. - client, err := ssh.Dial("tcp", "host.com:22", config) - if err != nil { - log.Fatalf("unable to connect: %v", err) - } - defer client.Close() -} - -func ExampleClient_Listen() { - var hostKey ssh.PublicKey - config := &ssh.ClientConfig{ - User: "username", - Auth: []ssh.AuthMethod{ - ssh.Password("password"), - }, - HostKeyCallback: ssh.FixedHostKey(hostKey), - } - // Dial your ssh server. - conn, err := ssh.Dial("tcp", "localhost:22", config) - if err != nil { - log.Fatal("unable to connect: ", err) - } - defer conn.Close() - - // Request the remote side to open port 8080 on all interfaces. - l, err := conn.Listen("tcp", "0.0.0.0:8080") - if err != nil { - log.Fatal("unable to register tcp forward: ", err) - } - defer l.Close() - - // Serve HTTP with your SSH server acting as a reverse proxy. - http.Serve(l, http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) { - fmt.Fprintf(resp, "Hello world!\n") - })) -} - -func ExampleSession_RequestPty() { - var hostKey ssh.PublicKey - // Create client config - config := &ssh.ClientConfig{ - User: "username", - Auth: []ssh.AuthMethod{ - ssh.Password("password"), - }, - HostKeyCallback: ssh.FixedHostKey(hostKey), - } - // Connect to ssh server - conn, err := ssh.Dial("tcp", "localhost:22", config) - if err != nil { - log.Fatal("unable to connect: ", err) - } - defer conn.Close() - // Create a session - session, err := conn.NewSession() - if err != nil { - log.Fatal("unable to create session: ", err) - } - defer session.Close() - // Set up terminal modes - modes := ssh.TerminalModes{ - ssh.ECHO: 0, // disable echoing - ssh.TTY_OP_ISPEED: 14400, // input speed = 14.4kbaud - ssh.TTY_OP_OSPEED: 14400, // output speed = 14.4kbaud - } - // Request pseudo terminal - if err := session.RequestPty("xterm", 40, 80, modes); err != nil { - log.Fatal("request for pseudo terminal failed: ", err) - } - // Start remote shell - if err := session.Shell(); err != nil { - log.Fatal("failed to start shell: ", err) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/handshake.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/handshake.go deleted file mode 100644 index 4f7912ecd..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/handshake.go +++ /dev/null @@ -1,646 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "crypto/rand" - "errors" - "fmt" - "io" - "log" - "net" - "sync" -) - -// debugHandshake, if set, prints messages sent and received. Key -// exchange messages are printed as if DH were used, so the debug -// messages are wrong when using ECDH. -const debugHandshake = false - -// chanSize sets the amount of buffering SSH connections. This is -// primarily for testing: setting chanSize=0 uncovers deadlocks more -// quickly. -const chanSize = 16 - -// keyingTransport is a packet based transport that supports key -// changes. It need not be thread-safe. It should pass through -// msgNewKeys in both directions. -type keyingTransport interface { - packetConn - - // prepareKeyChange sets up a key change. The key change for a - // direction will be effected if a msgNewKeys message is sent - // or received. - prepareKeyChange(*algorithms, *kexResult) error -} - -// handshakeTransport implements rekeying on top of a keyingTransport -// and offers a thread-safe writePacket() interface. -type handshakeTransport struct { - conn keyingTransport - config *Config - - serverVersion []byte - clientVersion []byte - - // hostKeys is non-empty if we are the server. In that case, - // it contains all host keys that can be used to sign the - // connection. - hostKeys []Signer - - // hostKeyAlgorithms is non-empty if we are the client. In that case, - // we accept these key types from the server as host key. - hostKeyAlgorithms []string - - // On read error, incoming is closed, and readError is set. - incoming chan []byte - readError error - - mu sync.Mutex - writeError error - sentInitPacket []byte - sentInitMsg *kexInitMsg - pendingPackets [][]byte // Used when a key exchange is in progress. - - // If the read loop wants to schedule a kex, it pings this - // channel, and the write loop will send out a kex - // message. - requestKex chan struct{} - - // If the other side requests or confirms a kex, its kexInit - // packet is sent here for the write loop to find it. - startKex chan *pendingKex - - // data for host key checking - hostKeyCallback HostKeyCallback - dialAddress string - remoteAddr net.Addr - - // bannerCallback is non-empty if we are the client and it has been set in - // ClientConfig. In that case it is called during the user authentication - // dance to handle a custom server's message. - bannerCallback BannerCallback - - // Algorithms agreed in the last key exchange. - algorithms *algorithms - - readPacketsLeft uint32 - readBytesLeft int64 - - writePacketsLeft uint32 - writeBytesLeft int64 - - // The session ID or nil if first kex did not complete yet. - sessionID []byte -} - -type pendingKex struct { - otherInit []byte - done chan error -} - -func newHandshakeTransport(conn keyingTransport, config *Config, clientVersion, serverVersion []byte) *handshakeTransport { - t := &handshakeTransport{ - conn: conn, - serverVersion: serverVersion, - clientVersion: clientVersion, - incoming: make(chan []byte, chanSize), - requestKex: make(chan struct{}, 1), - startKex: make(chan *pendingKex, 1), - - config: config, - } - t.resetReadThresholds() - t.resetWriteThresholds() - - // We always start with a mandatory key exchange. - t.requestKex <- struct{}{} - return t -} - -func newClientTransport(conn keyingTransport, clientVersion, serverVersion []byte, config *ClientConfig, dialAddr string, addr net.Addr) *handshakeTransport { - t := newHandshakeTransport(conn, &config.Config, clientVersion, serverVersion) - t.dialAddress = dialAddr - t.remoteAddr = addr - t.hostKeyCallback = config.HostKeyCallback - t.bannerCallback = config.BannerCallback - if config.HostKeyAlgorithms != nil { - t.hostKeyAlgorithms = config.HostKeyAlgorithms - } else { - t.hostKeyAlgorithms = supportedHostKeyAlgos - } - go t.readLoop() - go t.kexLoop() - return t -} - -func newServerTransport(conn keyingTransport, clientVersion, serverVersion []byte, config *ServerConfig) *handshakeTransport { - t := newHandshakeTransport(conn, &config.Config, clientVersion, serverVersion) - t.hostKeys = config.hostKeys - go t.readLoop() - go t.kexLoop() - return t -} - -func (t *handshakeTransport) getSessionID() []byte { - return t.sessionID -} - -// waitSession waits for the session to be established. This should be -// the first thing to call after instantiating handshakeTransport. -func (t *handshakeTransport) waitSession() error { - p, err := t.readPacket() - if err != nil { - return err - } - if p[0] != msgNewKeys { - return fmt.Errorf("ssh: first packet should be msgNewKeys") - } - - return nil -} - -func (t *handshakeTransport) id() string { - if len(t.hostKeys) > 0 { - return "server" - } - return "client" -} - -func (t *handshakeTransport) printPacket(p []byte, write bool) { - action := "got" - if write { - action = "sent" - } - - if p[0] == msgChannelData || p[0] == msgChannelExtendedData { - log.Printf("%s %s data (packet %d bytes)", t.id(), action, len(p)) - } else { - msg, err := decode(p) - log.Printf("%s %s %T %v (%v)", t.id(), action, msg, msg, err) - } -} - -func (t *handshakeTransport) readPacket() ([]byte, error) { - p, ok := <-t.incoming - if !ok { - return nil, t.readError - } - return p, nil -} - -func (t *handshakeTransport) readLoop() { - first := true - for { - p, err := t.readOnePacket(first) - first = false - if err != nil { - t.readError = err - close(t.incoming) - break - } - if p[0] == msgIgnore || p[0] == msgDebug { - continue - } - t.incoming <- p - } - - // Stop writers too. - t.recordWriteError(t.readError) - - // Unblock the writer should it wait for this. - close(t.startKex) - - // Don't close t.requestKex; it's also written to from writePacket. -} - -func (t *handshakeTransport) pushPacket(p []byte) error { - if debugHandshake { - t.printPacket(p, true) - } - return t.conn.writePacket(p) -} - -func (t *handshakeTransport) getWriteError() error { - t.mu.Lock() - defer t.mu.Unlock() - return t.writeError -} - -func (t *handshakeTransport) recordWriteError(err error) { - t.mu.Lock() - defer t.mu.Unlock() - if t.writeError == nil && err != nil { - t.writeError = err - } -} - -func (t *handshakeTransport) requestKeyExchange() { - select { - case t.requestKex <- struct{}{}: - default: - // something already requested a kex, so do nothing. - } -} - -func (t *handshakeTransport) resetWriteThresholds() { - t.writePacketsLeft = packetRekeyThreshold - if t.config.RekeyThreshold > 0 { - t.writeBytesLeft = int64(t.config.RekeyThreshold) - } else if t.algorithms != nil { - t.writeBytesLeft = t.algorithms.w.rekeyBytes() - } else { - t.writeBytesLeft = 1 << 30 - } -} - -func (t *handshakeTransport) kexLoop() { - -write: - for t.getWriteError() == nil { - var request *pendingKex - var sent bool - - for request == nil || !sent { - var ok bool - select { - case request, ok = <-t.startKex: - if !ok { - break write - } - case <-t.requestKex: - break - } - - if !sent { - if err := t.sendKexInit(); err != nil { - t.recordWriteError(err) - break - } - sent = true - } - } - - if err := t.getWriteError(); err != nil { - if request != nil { - request.done <- err - } - break - } - - // We're not servicing t.requestKex, but that is OK: - // we never block on sending to t.requestKex. - - // We're not servicing t.startKex, but the remote end - // has just sent us a kexInitMsg, so it can't send - // another key change request, until we close the done - // channel on the pendingKex request. - - err := t.enterKeyExchange(request.otherInit) - - t.mu.Lock() - t.writeError = err - t.sentInitPacket = nil - t.sentInitMsg = nil - - t.resetWriteThresholds() - - // we have completed the key exchange. Since the - // reader is still blocked, it is safe to clear out - // the requestKex channel. This avoids the situation - // where: 1) we consumed our own request for the - // initial kex, and 2) the kex from the remote side - // caused another send on the requestKex channel, - clear: - for { - select { - case <-t.requestKex: - // - default: - break clear - } - } - - request.done <- t.writeError - - // kex finished. Push packets that we received while - // the kex was in progress. Don't look at t.startKex - // and don't increment writtenSinceKex: if we trigger - // another kex while we are still busy with the last - // one, things will become very confusing. - for _, p := range t.pendingPackets { - t.writeError = t.pushPacket(p) - if t.writeError != nil { - break - } - } - t.pendingPackets = t.pendingPackets[:0] - t.mu.Unlock() - } - - // drain startKex channel. We don't service t.requestKex - // because nobody does blocking sends there. - go func() { - for init := range t.startKex { - init.done <- t.writeError - } - }() - - // Unblock reader. - t.conn.Close() -} - -// The protocol uses uint32 for packet counters, so we can't let them -// reach 1<<32. We will actually read and write more packets than -// this, though: the other side may send more packets, and after we -// hit this limit on writing we will send a few more packets for the -// key exchange itself. -const packetRekeyThreshold = (1 << 31) - -func (t *handshakeTransport) resetReadThresholds() { - t.readPacketsLeft = packetRekeyThreshold - if t.config.RekeyThreshold > 0 { - t.readBytesLeft = int64(t.config.RekeyThreshold) - } else if t.algorithms != nil { - t.readBytesLeft = t.algorithms.r.rekeyBytes() - } else { - t.readBytesLeft = 1 << 30 - } -} - -func (t *handshakeTransport) readOnePacket(first bool) ([]byte, error) { - p, err := t.conn.readPacket() - if err != nil { - return nil, err - } - - if t.readPacketsLeft > 0 { - t.readPacketsLeft-- - } else { - t.requestKeyExchange() - } - - if t.readBytesLeft > 0 { - t.readBytesLeft -= int64(len(p)) - } else { - t.requestKeyExchange() - } - - if debugHandshake { - t.printPacket(p, false) - } - - if first && p[0] != msgKexInit { - return nil, fmt.Errorf("ssh: first packet should be msgKexInit") - } - - if p[0] != msgKexInit { - return p, nil - } - - firstKex := t.sessionID == nil - - kex := pendingKex{ - done: make(chan error, 1), - otherInit: p, - } - t.startKex <- &kex - err = <-kex.done - - if debugHandshake { - log.Printf("%s exited key exchange (first %v), err %v", t.id(), firstKex, err) - } - - if err != nil { - return nil, err - } - - t.resetReadThresholds() - - // By default, a key exchange is hidden from higher layers by - // translating it into msgIgnore. - successPacket := []byte{msgIgnore} - if firstKex { - // sendKexInit() for the first kex waits for - // msgNewKeys so the authentication process is - // guaranteed to happen over an encrypted transport. - successPacket = []byte{msgNewKeys} - } - - return successPacket, nil -} - -// sendKexInit sends a key change message. -func (t *handshakeTransport) sendKexInit() error { - t.mu.Lock() - defer t.mu.Unlock() - if t.sentInitMsg != nil { - // kexInits may be sent either in response to the other side, - // or because our side wants to initiate a key change, so we - // may have already sent a kexInit. In that case, don't send a - // second kexInit. - return nil - } - - msg := &kexInitMsg{ - KexAlgos: t.config.KeyExchanges, - CiphersClientServer: t.config.Ciphers, - CiphersServerClient: t.config.Ciphers, - MACsClientServer: t.config.MACs, - MACsServerClient: t.config.MACs, - CompressionClientServer: supportedCompressions, - CompressionServerClient: supportedCompressions, - } - io.ReadFull(rand.Reader, msg.Cookie[:]) - - if len(t.hostKeys) > 0 { - for _, k := range t.hostKeys { - msg.ServerHostKeyAlgos = append( - msg.ServerHostKeyAlgos, k.PublicKey().Type()) - } - } else { - msg.ServerHostKeyAlgos = t.hostKeyAlgorithms - } - packet := Marshal(msg) - - // writePacket destroys the contents, so save a copy. - packetCopy := make([]byte, len(packet)) - copy(packetCopy, packet) - - if err := t.pushPacket(packetCopy); err != nil { - return err - } - - t.sentInitMsg = msg - t.sentInitPacket = packet - - return nil -} - -func (t *handshakeTransport) writePacket(p []byte) error { - switch p[0] { - case msgKexInit: - return errors.New("ssh: only handshakeTransport can send kexInit") - case msgNewKeys: - return errors.New("ssh: only handshakeTransport can send newKeys") - } - - t.mu.Lock() - defer t.mu.Unlock() - if t.writeError != nil { - return t.writeError - } - - if t.sentInitMsg != nil { - // Copy the packet so the writer can reuse the buffer. - cp := make([]byte, len(p)) - copy(cp, p) - t.pendingPackets = append(t.pendingPackets, cp) - return nil - } - - if t.writeBytesLeft > 0 { - t.writeBytesLeft -= int64(len(p)) - } else { - t.requestKeyExchange() - } - - if t.writePacketsLeft > 0 { - t.writePacketsLeft-- - } else { - t.requestKeyExchange() - } - - if err := t.pushPacket(p); err != nil { - t.writeError = err - } - - return nil -} - -func (t *handshakeTransport) Close() error { - return t.conn.Close() -} - -func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error { - if debugHandshake { - log.Printf("%s entered key exchange", t.id()) - } - - otherInit := &kexInitMsg{} - if err := Unmarshal(otherInitPacket, otherInit); err != nil { - return err - } - - magics := handshakeMagics{ - clientVersion: t.clientVersion, - serverVersion: t.serverVersion, - clientKexInit: otherInitPacket, - serverKexInit: t.sentInitPacket, - } - - clientInit := otherInit - serverInit := t.sentInitMsg - if len(t.hostKeys) == 0 { - clientInit, serverInit = serverInit, clientInit - - magics.clientKexInit = t.sentInitPacket - magics.serverKexInit = otherInitPacket - } - - var err error - t.algorithms, err = findAgreedAlgorithms(clientInit, serverInit) - if err != nil { - return err - } - - // We don't send FirstKexFollows, but we handle receiving it. - // - // RFC 4253 section 7 defines the kex and the agreement method for - // first_kex_packet_follows. It states that the guessed packet - // should be ignored if the "kex algorithm and/or the host - // key algorithm is guessed wrong (server and client have - // different preferred algorithm), or if any of the other - // algorithms cannot be agreed upon". The other algorithms have - // already been checked above so the kex algorithm and host key - // algorithm are checked here. - if otherInit.FirstKexFollows && (clientInit.KexAlgos[0] != serverInit.KexAlgos[0] || clientInit.ServerHostKeyAlgos[0] != serverInit.ServerHostKeyAlgos[0]) { - // other side sent a kex message for the wrong algorithm, - // which we have to ignore. - if _, err := t.conn.readPacket(); err != nil { - return err - } - } - - kex, ok := kexAlgoMap[t.algorithms.kex] - if !ok { - return fmt.Errorf("ssh: unexpected key exchange algorithm %v", t.algorithms.kex) - } - - var result *kexResult - if len(t.hostKeys) > 0 { - result, err = t.server(kex, t.algorithms, &magics) - } else { - result, err = t.client(kex, t.algorithms, &magics) - } - - if err != nil { - return err - } - - if t.sessionID == nil { - t.sessionID = result.H - } - result.SessionID = t.sessionID - - if err := t.conn.prepareKeyChange(t.algorithms, result); err != nil { - return err - } - if err = t.conn.writePacket([]byte{msgNewKeys}); err != nil { - return err - } - if packet, err := t.conn.readPacket(); err != nil { - return err - } else if packet[0] != msgNewKeys { - return unexpectedMessageError(msgNewKeys, packet[0]) - } - - return nil -} - -func (t *handshakeTransport) server(kex kexAlgorithm, algs *algorithms, magics *handshakeMagics) (*kexResult, error) { - var hostKey Signer - for _, k := range t.hostKeys { - if algs.hostKey == k.PublicKey().Type() { - hostKey = k - } - } - - r, err := kex.Server(t.conn, t.config.Rand, magics, hostKey) - return r, err -} - -func (t *handshakeTransport) client(kex kexAlgorithm, algs *algorithms, magics *handshakeMagics) (*kexResult, error) { - result, err := kex.Client(t.conn, t.config.Rand, magics) - if err != nil { - return nil, err - } - - hostKey, err := ParsePublicKey(result.HostKey) - if err != nil { - return nil, err - } - - if err := verifyHostKeySignature(hostKey, result); err != nil { - return nil, err - } - - err = t.hostKeyCallback(t.dialAddress, t.remoteAddr, hostKey) - if err != nil { - return nil, err - } - - return result, nil -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/handshake_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/handshake_test.go deleted file mode 100644 index 91d493568..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/handshake_test.go +++ /dev/null @@ -1,559 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "crypto/rand" - "errors" - "fmt" - "io" - "net" - "reflect" - "runtime" - "strings" - "sync" - "testing" -) - -type testChecker struct { - calls []string -} - -func (t *testChecker) Check(dialAddr string, addr net.Addr, key PublicKey) error { - if dialAddr == "bad" { - return fmt.Errorf("dialAddr is bad") - } - - if tcpAddr, ok := addr.(*net.TCPAddr); !ok || tcpAddr == nil { - return fmt.Errorf("testChecker: got %T want *net.TCPAddr", addr) - } - - t.calls = append(t.calls, fmt.Sprintf("%s %v %s %x", dialAddr, addr, key.Type(), key.Marshal())) - - return nil -} - -// netPipe is analogous to net.Pipe, but it uses a real net.Conn, and -// therefore is buffered (net.Pipe deadlocks if both sides start with -// a write.) -func netPipe() (net.Conn, net.Conn, error) { - listener, err := net.Listen("tcp", "127.0.0.1:0") - if err != nil { - listener, err = net.Listen("tcp", "[::1]:0") - if err != nil { - return nil, nil, err - } - } - defer listener.Close() - c1, err := net.Dial("tcp", listener.Addr().String()) - if err != nil { - return nil, nil, err - } - - c2, err := listener.Accept() - if err != nil { - c1.Close() - return nil, nil, err - } - - return c1, c2, nil -} - -// noiseTransport inserts ignore messages to check that the read loop -// and the key exchange filters out these messages. -type noiseTransport struct { - keyingTransport -} - -func (t *noiseTransport) writePacket(p []byte) error { - ignore := []byte{msgIgnore} - if err := t.keyingTransport.writePacket(ignore); err != nil { - return err - } - debug := []byte{msgDebug, 1, 2, 3} - if err := t.keyingTransport.writePacket(debug); err != nil { - return err - } - - return t.keyingTransport.writePacket(p) -} - -func addNoiseTransport(t keyingTransport) keyingTransport { - return &noiseTransport{t} -} - -// handshakePair creates two handshakeTransports connected with each -// other. If the noise argument is true, both transports will try to -// confuse the other side by sending ignore and debug messages. -func handshakePair(clientConf *ClientConfig, addr string, noise bool) (client *handshakeTransport, server *handshakeTransport, err error) { - a, b, err := netPipe() - if err != nil { - return nil, nil, err - } - - var trC, trS keyingTransport - - trC = newTransport(a, rand.Reader, true) - trS = newTransport(b, rand.Reader, false) - if noise { - trC = addNoiseTransport(trC) - trS = addNoiseTransport(trS) - } - clientConf.SetDefaults() - - v := []byte("version") - client = newClientTransport(trC, v, v, clientConf, addr, a.RemoteAddr()) - - serverConf := &ServerConfig{} - serverConf.AddHostKey(testSigners["ecdsa"]) - serverConf.AddHostKey(testSigners["rsa"]) - serverConf.SetDefaults() - server = newServerTransport(trS, v, v, serverConf) - - if err := server.waitSession(); err != nil { - return nil, nil, fmt.Errorf("server.waitSession: %v", err) - } - if err := client.waitSession(); err != nil { - return nil, nil, fmt.Errorf("client.waitSession: %v", err) - } - - return client, server, nil -} - -func TestHandshakeBasic(t *testing.T) { - if runtime.GOOS == "plan9" { - t.Skip("see golang.org/issue/7237") - } - - checker := &syncChecker{ - waitCall: make(chan int, 10), - called: make(chan int, 10), - } - - checker.waitCall <- 1 - trC, trS, err := handshakePair(&ClientConfig{HostKeyCallback: checker.Check}, "addr", false) - if err != nil { - t.Fatalf("handshakePair: %v", err) - } - - defer trC.Close() - defer trS.Close() - - // Let first kex complete normally. - <-checker.called - - clientDone := make(chan int, 0) - gotHalf := make(chan int, 0) - const N = 20 - - go func() { - defer close(clientDone) - // Client writes a bunch of stuff, and does a key - // change in the middle. This should not confuse the - // handshake in progress. We do this twice, so we test - // that the packet buffer is reset correctly. - for i := 0; i < N; i++ { - p := []byte{msgRequestSuccess, byte(i)} - if err := trC.writePacket(p); err != nil { - t.Fatalf("sendPacket: %v", err) - } - if (i % 10) == 5 { - <-gotHalf - // halfway through, we request a key change. - trC.requestKeyExchange() - - // Wait until we can be sure the key - // change has really started before we - // write more. - <-checker.called - } - if (i % 10) == 7 { - // write some packets until the kex - // completes, to test buffering of - // packets. - checker.waitCall <- 1 - } - } - }() - - // Server checks that client messages come in cleanly - i := 0 - err = nil - for ; i < N; i++ { - var p []byte - p, err = trS.readPacket() - if err != nil { - break - } - if (i % 10) == 5 { - gotHalf <- 1 - } - - want := []byte{msgRequestSuccess, byte(i)} - if bytes.Compare(p, want) != 0 { - t.Errorf("message %d: got %v, want %v", i, p, want) - } - } - <-clientDone - if err != nil && err != io.EOF { - t.Fatalf("server error: %v", err) - } - if i != N { - t.Errorf("received %d messages, want 10.", i) - } - - close(checker.called) - if _, ok := <-checker.called; ok { - // If all went well, we registered exactly 2 key changes: one - // that establishes the session, and one that we requested - // additionally. - t.Fatalf("got another host key checks after 2 handshakes") - } -} - -func TestForceFirstKex(t *testing.T) { - // like handshakePair, but must access the keyingTransport. - checker := &testChecker{} - clientConf := &ClientConfig{HostKeyCallback: checker.Check} - a, b, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - - var trC, trS keyingTransport - - trC = newTransport(a, rand.Reader, true) - - // This is the disallowed packet: - trC.writePacket(Marshal(&serviceRequestMsg{serviceUserAuth})) - - // Rest of the setup. - trS = newTransport(b, rand.Reader, false) - clientConf.SetDefaults() - - v := []byte("version") - client := newClientTransport(trC, v, v, clientConf, "addr", a.RemoteAddr()) - - serverConf := &ServerConfig{} - serverConf.AddHostKey(testSigners["ecdsa"]) - serverConf.AddHostKey(testSigners["rsa"]) - serverConf.SetDefaults() - server := newServerTransport(trS, v, v, serverConf) - - defer client.Close() - defer server.Close() - - // We setup the initial key exchange, but the remote side - // tries to send serviceRequestMsg in cleartext, which is - // disallowed. - - if err := server.waitSession(); err == nil { - t.Errorf("server first kex init should reject unexpected packet") - } -} - -func TestHandshakeAutoRekeyWrite(t *testing.T) { - checker := &syncChecker{ - called: make(chan int, 10), - waitCall: nil, - } - clientConf := &ClientConfig{HostKeyCallback: checker.Check} - clientConf.RekeyThreshold = 500 - trC, trS, err := handshakePair(clientConf, "addr", false) - if err != nil { - t.Fatalf("handshakePair: %v", err) - } - defer trC.Close() - defer trS.Close() - - input := make([]byte, 251) - input[0] = msgRequestSuccess - - done := make(chan int, 1) - const numPacket = 5 - go func() { - defer close(done) - j := 0 - for ; j < numPacket; j++ { - if p, err := trS.readPacket(); err != nil { - break - } else if !bytes.Equal(input, p) { - t.Errorf("got packet type %d, want %d", p[0], input[0]) - } - } - - if j != numPacket { - t.Errorf("got %d, want 5 messages", j) - } - }() - - <-checker.called - - for i := 0; i < numPacket; i++ { - p := make([]byte, len(input)) - copy(p, input) - if err := trC.writePacket(p); err != nil { - t.Errorf("writePacket: %v", err) - } - if i == 2 { - // Make sure the kex is in progress. - <-checker.called - } - - } - <-done -} - -type syncChecker struct { - waitCall chan int - called chan int -} - -func (c *syncChecker) Check(dialAddr string, addr net.Addr, key PublicKey) error { - c.called <- 1 - if c.waitCall != nil { - <-c.waitCall - } - return nil -} - -func TestHandshakeAutoRekeyRead(t *testing.T) { - sync := &syncChecker{ - called: make(chan int, 2), - waitCall: nil, - } - clientConf := &ClientConfig{ - HostKeyCallback: sync.Check, - } - clientConf.RekeyThreshold = 500 - - trC, trS, err := handshakePair(clientConf, "addr", false) - if err != nil { - t.Fatalf("handshakePair: %v", err) - } - defer trC.Close() - defer trS.Close() - - packet := make([]byte, 501) - packet[0] = msgRequestSuccess - if err := trS.writePacket(packet); err != nil { - t.Fatalf("writePacket: %v", err) - } - - // While we read out the packet, a key change will be - // initiated. - done := make(chan int, 1) - go func() { - defer close(done) - if _, err := trC.readPacket(); err != nil { - t.Fatalf("readPacket(client): %v", err) - } - - }() - - <-done - <-sync.called -} - -// errorKeyingTransport generates errors after a given number of -// read/write operations. -type errorKeyingTransport struct { - packetConn - readLeft, writeLeft int -} - -func (n *errorKeyingTransport) prepareKeyChange(*algorithms, *kexResult) error { - return nil -} - -func (n *errorKeyingTransport) getSessionID() []byte { - return nil -} - -func (n *errorKeyingTransport) writePacket(packet []byte) error { - if n.writeLeft == 0 { - n.Close() - return errors.New("barf") - } - - n.writeLeft-- - return n.packetConn.writePacket(packet) -} - -func (n *errorKeyingTransport) readPacket() ([]byte, error) { - if n.readLeft == 0 { - n.Close() - return nil, errors.New("barf") - } - - n.readLeft-- - return n.packetConn.readPacket() -} - -func TestHandshakeErrorHandlingRead(t *testing.T) { - for i := 0; i < 20; i++ { - testHandshakeErrorHandlingN(t, i, -1, false) - } -} - -func TestHandshakeErrorHandlingWrite(t *testing.T) { - for i := 0; i < 20; i++ { - testHandshakeErrorHandlingN(t, -1, i, false) - } -} - -func TestHandshakeErrorHandlingReadCoupled(t *testing.T) { - for i := 0; i < 20; i++ { - testHandshakeErrorHandlingN(t, i, -1, true) - } -} - -func TestHandshakeErrorHandlingWriteCoupled(t *testing.T) { - for i := 0; i < 20; i++ { - testHandshakeErrorHandlingN(t, -1, i, true) - } -} - -// testHandshakeErrorHandlingN runs handshakes, injecting errors. If -// handshakeTransport deadlocks, the go runtime will detect it and -// panic. -func testHandshakeErrorHandlingN(t *testing.T, readLimit, writeLimit int, coupled bool) { - msg := Marshal(&serviceRequestMsg{strings.Repeat("x", int(minRekeyThreshold)/4)}) - - a, b := memPipe() - defer a.Close() - defer b.Close() - - key := testSigners["ecdsa"] - serverConf := Config{RekeyThreshold: minRekeyThreshold} - serverConf.SetDefaults() - serverConn := newHandshakeTransport(&errorKeyingTransport{a, readLimit, writeLimit}, &serverConf, []byte{'a'}, []byte{'b'}) - serverConn.hostKeys = []Signer{key} - go serverConn.readLoop() - go serverConn.kexLoop() - - clientConf := Config{RekeyThreshold: 10 * minRekeyThreshold} - clientConf.SetDefaults() - clientConn := newHandshakeTransport(&errorKeyingTransport{b, -1, -1}, &clientConf, []byte{'a'}, []byte{'b'}) - clientConn.hostKeyAlgorithms = []string{key.PublicKey().Type()} - clientConn.hostKeyCallback = InsecureIgnoreHostKey() - go clientConn.readLoop() - go clientConn.kexLoop() - - var wg sync.WaitGroup - - for _, hs := range []packetConn{serverConn, clientConn} { - if !coupled { - wg.Add(2) - go func(c packetConn) { - for i := 0; ; i++ { - str := fmt.Sprintf("%08x", i) + strings.Repeat("x", int(minRekeyThreshold)/4-8) - err := c.writePacket(Marshal(&serviceRequestMsg{str})) - if err != nil { - break - } - } - wg.Done() - c.Close() - }(hs) - go func(c packetConn) { - for { - _, err := c.readPacket() - if err != nil { - break - } - } - wg.Done() - }(hs) - } else { - wg.Add(1) - go func(c packetConn) { - for { - _, err := c.readPacket() - if err != nil { - break - } - if err := c.writePacket(msg); err != nil { - break - } - - } - wg.Done() - }(hs) - } - } - wg.Wait() -} - -func TestDisconnect(t *testing.T) { - if runtime.GOOS == "plan9" { - t.Skip("see golang.org/issue/7237") - } - checker := &testChecker{} - trC, trS, err := handshakePair(&ClientConfig{HostKeyCallback: checker.Check}, "addr", false) - if err != nil { - t.Fatalf("handshakePair: %v", err) - } - - defer trC.Close() - defer trS.Close() - - trC.writePacket([]byte{msgRequestSuccess, 0, 0}) - errMsg := &disconnectMsg{ - Reason: 42, - Message: "such is life", - } - trC.writePacket(Marshal(errMsg)) - trC.writePacket([]byte{msgRequestSuccess, 0, 0}) - - packet, err := trS.readPacket() - if err != nil { - t.Fatalf("readPacket 1: %v", err) - } - if packet[0] != msgRequestSuccess { - t.Errorf("got packet %v, want packet type %d", packet, msgRequestSuccess) - } - - _, err = trS.readPacket() - if err == nil { - t.Errorf("readPacket 2 succeeded") - } else if !reflect.DeepEqual(err, errMsg) { - t.Errorf("got error %#v, want %#v", err, errMsg) - } - - _, err = trS.readPacket() - if err == nil { - t.Errorf("readPacket 3 succeeded") - } -} - -func TestHandshakeRekeyDefault(t *testing.T) { - clientConf := &ClientConfig{ - Config: Config{ - Ciphers: []string{"aes128-ctr"}, - }, - HostKeyCallback: InsecureIgnoreHostKey(), - } - trC, trS, err := handshakePair(clientConf, "addr", false) - if err != nil { - t.Fatalf("handshakePair: %v", err) - } - defer trC.Close() - defer trS.Close() - - trC.writePacket([]byte{msgRequestSuccess, 0, 0}) - trC.Close() - - rgb := (1024 + trC.readBytesLeft) >> 30 - wgb := (1024 + trC.writeBytesLeft) >> 30 - - if rgb != 64 { - t.Errorf("got rekey after %dG read, want 64G", rgb) - } - if wgb != 64 { - t.Errorf("got rekey after %dG write, want 64G", wgb) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/kex.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/kex.go deleted file mode 100644 index f91c2770e..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/kex.go +++ /dev/null @@ -1,540 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "crypto" - "crypto/ecdsa" - "crypto/elliptic" - "crypto/rand" - "crypto/subtle" - "errors" - "io" - "math/big" - - "golang.org/x/crypto/curve25519" -) - -const ( - kexAlgoDH1SHA1 = "diffie-hellman-group1-sha1" - kexAlgoDH14SHA1 = "diffie-hellman-group14-sha1" - kexAlgoECDH256 = "ecdh-sha2-nistp256" - kexAlgoECDH384 = "ecdh-sha2-nistp384" - kexAlgoECDH521 = "ecdh-sha2-nistp521" - kexAlgoCurve25519SHA256 = "curve25519-sha256@libssh.org" -) - -// kexResult captures the outcome of a key exchange. -type kexResult struct { - // Session hash. See also RFC 4253, section 8. - H []byte - - // Shared secret. See also RFC 4253, section 8. - K []byte - - // Host key as hashed into H. - HostKey []byte - - // Signature of H. - Signature []byte - - // A cryptographic hash function that matches the security - // level of the key exchange algorithm. It is used for - // calculating H, and for deriving keys from H and K. - Hash crypto.Hash - - // The session ID, which is the first H computed. This is used - // to derive key material inside the transport. - SessionID []byte -} - -// handshakeMagics contains data that is always included in the -// session hash. -type handshakeMagics struct { - clientVersion, serverVersion []byte - clientKexInit, serverKexInit []byte -} - -func (m *handshakeMagics) write(w io.Writer) { - writeString(w, m.clientVersion) - writeString(w, m.serverVersion) - writeString(w, m.clientKexInit) - writeString(w, m.serverKexInit) -} - -// kexAlgorithm abstracts different key exchange algorithms. -type kexAlgorithm interface { - // Server runs server-side key agreement, signing the result - // with a hostkey. - Server(p packetConn, rand io.Reader, magics *handshakeMagics, s Signer) (*kexResult, error) - - // Client runs the client-side key agreement. Caller is - // responsible for verifying the host key signature. - Client(p packetConn, rand io.Reader, magics *handshakeMagics) (*kexResult, error) -} - -// dhGroup is a multiplicative group suitable for implementing Diffie-Hellman key agreement. -type dhGroup struct { - g, p, pMinus1 *big.Int -} - -func (group *dhGroup) diffieHellman(theirPublic, myPrivate *big.Int) (*big.Int, error) { - if theirPublic.Cmp(bigOne) <= 0 || theirPublic.Cmp(group.pMinus1) >= 0 { - return nil, errors.New("ssh: DH parameter out of bounds") - } - return new(big.Int).Exp(theirPublic, myPrivate, group.p), nil -} - -func (group *dhGroup) Client(c packetConn, randSource io.Reader, magics *handshakeMagics) (*kexResult, error) { - hashFunc := crypto.SHA1 - - var x *big.Int - for { - var err error - if x, err = rand.Int(randSource, group.pMinus1); err != nil { - return nil, err - } - if x.Sign() > 0 { - break - } - } - - X := new(big.Int).Exp(group.g, x, group.p) - kexDHInit := kexDHInitMsg{ - X: X, - } - if err := c.writePacket(Marshal(&kexDHInit)); err != nil { - return nil, err - } - - packet, err := c.readPacket() - if err != nil { - return nil, err - } - - var kexDHReply kexDHReplyMsg - if err = Unmarshal(packet, &kexDHReply); err != nil { - return nil, err - } - - kInt, err := group.diffieHellman(kexDHReply.Y, x) - if err != nil { - return nil, err - } - - h := hashFunc.New() - magics.write(h) - writeString(h, kexDHReply.HostKey) - writeInt(h, X) - writeInt(h, kexDHReply.Y) - K := make([]byte, intLength(kInt)) - marshalInt(K, kInt) - h.Write(K) - - return &kexResult{ - H: h.Sum(nil), - K: K, - HostKey: kexDHReply.HostKey, - Signature: kexDHReply.Signature, - Hash: crypto.SHA1, - }, nil -} - -func (group *dhGroup) Server(c packetConn, randSource io.Reader, magics *handshakeMagics, priv Signer) (result *kexResult, err error) { - hashFunc := crypto.SHA1 - packet, err := c.readPacket() - if err != nil { - return - } - var kexDHInit kexDHInitMsg - if err = Unmarshal(packet, &kexDHInit); err != nil { - return - } - - var y *big.Int - for { - if y, err = rand.Int(randSource, group.pMinus1); err != nil { - return - } - if y.Sign() > 0 { - break - } - } - - Y := new(big.Int).Exp(group.g, y, group.p) - kInt, err := group.diffieHellman(kexDHInit.X, y) - if err != nil { - return nil, err - } - - hostKeyBytes := priv.PublicKey().Marshal() - - h := hashFunc.New() - magics.write(h) - writeString(h, hostKeyBytes) - writeInt(h, kexDHInit.X) - writeInt(h, Y) - - K := make([]byte, intLength(kInt)) - marshalInt(K, kInt) - h.Write(K) - - H := h.Sum(nil) - - // H is already a hash, but the hostkey signing will apply its - // own key-specific hash algorithm. - sig, err := signAndMarshal(priv, randSource, H) - if err != nil { - return nil, err - } - - kexDHReply := kexDHReplyMsg{ - HostKey: hostKeyBytes, - Y: Y, - Signature: sig, - } - packet = Marshal(&kexDHReply) - - err = c.writePacket(packet) - return &kexResult{ - H: H, - K: K, - HostKey: hostKeyBytes, - Signature: sig, - Hash: crypto.SHA1, - }, nil -} - -// ecdh performs Elliptic Curve Diffie-Hellman key exchange as -// described in RFC 5656, section 4. -type ecdh struct { - curve elliptic.Curve -} - -func (kex *ecdh) Client(c packetConn, rand io.Reader, magics *handshakeMagics) (*kexResult, error) { - ephKey, err := ecdsa.GenerateKey(kex.curve, rand) - if err != nil { - return nil, err - } - - kexInit := kexECDHInitMsg{ - ClientPubKey: elliptic.Marshal(kex.curve, ephKey.PublicKey.X, ephKey.PublicKey.Y), - } - - serialized := Marshal(&kexInit) - if err := c.writePacket(serialized); err != nil { - return nil, err - } - - packet, err := c.readPacket() - if err != nil { - return nil, err - } - - var reply kexECDHReplyMsg - if err = Unmarshal(packet, &reply); err != nil { - return nil, err - } - - x, y, err := unmarshalECKey(kex.curve, reply.EphemeralPubKey) - if err != nil { - return nil, err - } - - // generate shared secret - secret, _ := kex.curve.ScalarMult(x, y, ephKey.D.Bytes()) - - h := ecHash(kex.curve).New() - magics.write(h) - writeString(h, reply.HostKey) - writeString(h, kexInit.ClientPubKey) - writeString(h, reply.EphemeralPubKey) - K := make([]byte, intLength(secret)) - marshalInt(K, secret) - h.Write(K) - - return &kexResult{ - H: h.Sum(nil), - K: K, - HostKey: reply.HostKey, - Signature: reply.Signature, - Hash: ecHash(kex.curve), - }, nil -} - -// unmarshalECKey parses and checks an EC key. -func unmarshalECKey(curve elliptic.Curve, pubkey []byte) (x, y *big.Int, err error) { - x, y = elliptic.Unmarshal(curve, pubkey) - if x == nil { - return nil, nil, errors.New("ssh: elliptic.Unmarshal failure") - } - if !validateECPublicKey(curve, x, y) { - return nil, nil, errors.New("ssh: public key not on curve") - } - return x, y, nil -} - -// validateECPublicKey checks that the point is a valid public key for -// the given curve. See [SEC1], 3.2.2 -func validateECPublicKey(curve elliptic.Curve, x, y *big.Int) bool { - if x.Sign() == 0 && y.Sign() == 0 { - return false - } - - if x.Cmp(curve.Params().P) >= 0 { - return false - } - - if y.Cmp(curve.Params().P) >= 0 { - return false - } - - if !curve.IsOnCurve(x, y) { - return false - } - - // We don't check if N * PubKey == 0, since - // - // - the NIST curves have cofactor = 1, so this is implicit. - // (We don't foresee an implementation that supports non NIST - // curves) - // - // - for ephemeral keys, we don't need to worry about small - // subgroup attacks. - return true -} - -func (kex *ecdh) Server(c packetConn, rand io.Reader, magics *handshakeMagics, priv Signer) (result *kexResult, err error) { - packet, err := c.readPacket() - if err != nil { - return nil, err - } - - var kexECDHInit kexECDHInitMsg - if err = Unmarshal(packet, &kexECDHInit); err != nil { - return nil, err - } - - clientX, clientY, err := unmarshalECKey(kex.curve, kexECDHInit.ClientPubKey) - if err != nil { - return nil, err - } - - // We could cache this key across multiple users/multiple - // connection attempts, but the benefit is small. OpenSSH - // generates a new key for each incoming connection. - ephKey, err := ecdsa.GenerateKey(kex.curve, rand) - if err != nil { - return nil, err - } - - hostKeyBytes := priv.PublicKey().Marshal() - - serializedEphKey := elliptic.Marshal(kex.curve, ephKey.PublicKey.X, ephKey.PublicKey.Y) - - // generate shared secret - secret, _ := kex.curve.ScalarMult(clientX, clientY, ephKey.D.Bytes()) - - h := ecHash(kex.curve).New() - magics.write(h) - writeString(h, hostKeyBytes) - writeString(h, kexECDHInit.ClientPubKey) - writeString(h, serializedEphKey) - - K := make([]byte, intLength(secret)) - marshalInt(K, secret) - h.Write(K) - - H := h.Sum(nil) - - // H is already a hash, but the hostkey signing will apply its - // own key-specific hash algorithm. - sig, err := signAndMarshal(priv, rand, H) - if err != nil { - return nil, err - } - - reply := kexECDHReplyMsg{ - EphemeralPubKey: serializedEphKey, - HostKey: hostKeyBytes, - Signature: sig, - } - - serialized := Marshal(&reply) - if err := c.writePacket(serialized); err != nil { - return nil, err - } - - return &kexResult{ - H: H, - K: K, - HostKey: reply.HostKey, - Signature: sig, - Hash: ecHash(kex.curve), - }, nil -} - -var kexAlgoMap = map[string]kexAlgorithm{} - -func init() { - // This is the group called diffie-hellman-group1-sha1 in RFC - // 4253 and Oakley Group 2 in RFC 2409. - p, _ := new(big.Int).SetString("FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF", 16) - kexAlgoMap[kexAlgoDH1SHA1] = &dhGroup{ - g: new(big.Int).SetInt64(2), - p: p, - pMinus1: new(big.Int).Sub(p, bigOne), - } - - // This is the group called diffie-hellman-group14-sha1 in RFC - // 4253 and Oakley Group 14 in RFC 3526. - p, _ = new(big.Int).SetString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kexAlgoMap[kexAlgoDH14SHA1] = &dhGroup{ - g: new(big.Int).SetInt64(2), - p: p, - pMinus1: new(big.Int).Sub(p, bigOne), - } - - kexAlgoMap[kexAlgoECDH521] = &ecdh{elliptic.P521()} - kexAlgoMap[kexAlgoECDH384] = &ecdh{elliptic.P384()} - kexAlgoMap[kexAlgoECDH256] = &ecdh{elliptic.P256()} - kexAlgoMap[kexAlgoCurve25519SHA256] = &curve25519sha256{} -} - -// curve25519sha256 implements the curve25519-sha256@libssh.org key -// agreement protocol, as described in -// https://git.libssh.org/projects/libssh.git/tree/doc/curve25519-sha256@libssh.org.txt -type curve25519sha256 struct{} - -type curve25519KeyPair struct { - priv [32]byte - pub [32]byte -} - -func (kp *curve25519KeyPair) generate(rand io.Reader) error { - if _, err := io.ReadFull(rand, kp.priv[:]); err != nil { - return err - } - curve25519.ScalarBaseMult(&kp.pub, &kp.priv) - return nil -} - -// curve25519Zeros is just an array of 32 zero bytes so that we have something -// convenient to compare against in order to reject curve25519 points with the -// wrong order. -var curve25519Zeros [32]byte - -func (kex *curve25519sha256) Client(c packetConn, rand io.Reader, magics *handshakeMagics) (*kexResult, error) { - var kp curve25519KeyPair - if err := kp.generate(rand); err != nil { - return nil, err - } - if err := c.writePacket(Marshal(&kexECDHInitMsg{kp.pub[:]})); err != nil { - return nil, err - } - - packet, err := c.readPacket() - if err != nil { - return nil, err - } - - var reply kexECDHReplyMsg - if err = Unmarshal(packet, &reply); err != nil { - return nil, err - } - if len(reply.EphemeralPubKey) != 32 { - return nil, errors.New("ssh: peer's curve25519 public value has wrong length") - } - - var servPub, secret [32]byte - copy(servPub[:], reply.EphemeralPubKey) - curve25519.ScalarMult(&secret, &kp.priv, &servPub) - if subtle.ConstantTimeCompare(secret[:], curve25519Zeros[:]) == 1 { - return nil, errors.New("ssh: peer's curve25519 public value has wrong order") - } - - h := crypto.SHA256.New() - magics.write(h) - writeString(h, reply.HostKey) - writeString(h, kp.pub[:]) - writeString(h, reply.EphemeralPubKey) - - kInt := new(big.Int).SetBytes(secret[:]) - K := make([]byte, intLength(kInt)) - marshalInt(K, kInt) - h.Write(K) - - return &kexResult{ - H: h.Sum(nil), - K: K, - HostKey: reply.HostKey, - Signature: reply.Signature, - Hash: crypto.SHA256, - }, nil -} - -func (kex *curve25519sha256) Server(c packetConn, rand io.Reader, magics *handshakeMagics, priv Signer) (result *kexResult, err error) { - packet, err := c.readPacket() - if err != nil { - return - } - var kexInit kexECDHInitMsg - if err = Unmarshal(packet, &kexInit); err != nil { - return - } - - if len(kexInit.ClientPubKey) != 32 { - return nil, errors.New("ssh: peer's curve25519 public value has wrong length") - } - - var kp curve25519KeyPair - if err := kp.generate(rand); err != nil { - return nil, err - } - - var clientPub, secret [32]byte - copy(clientPub[:], kexInit.ClientPubKey) - curve25519.ScalarMult(&secret, &kp.priv, &clientPub) - if subtle.ConstantTimeCompare(secret[:], curve25519Zeros[:]) == 1 { - return nil, errors.New("ssh: peer's curve25519 public value has wrong order") - } - - hostKeyBytes := priv.PublicKey().Marshal() - - h := crypto.SHA256.New() - magics.write(h) - writeString(h, hostKeyBytes) - writeString(h, kexInit.ClientPubKey) - writeString(h, kp.pub[:]) - - kInt := new(big.Int).SetBytes(secret[:]) - K := make([]byte, intLength(kInt)) - marshalInt(K, kInt) - h.Write(K) - - H := h.Sum(nil) - - sig, err := signAndMarshal(priv, rand, H) - if err != nil { - return nil, err - } - - reply := kexECDHReplyMsg{ - EphemeralPubKey: kp.pub[:], - HostKey: hostKeyBytes, - Signature: sig, - } - if err := c.writePacket(Marshal(&reply)); err != nil { - return nil, err - } - return &kexResult{ - H: H, - K: K, - HostKey: hostKeyBytes, - Signature: sig, - Hash: crypto.SHA256, - }, nil -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/kex_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/kex_test.go deleted file mode 100644 index 12ca0acd3..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/kex_test.go +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -// Key exchange tests. - -import ( - "crypto/rand" - "reflect" - "testing" -) - -func TestKexes(t *testing.T) { - type kexResultErr struct { - result *kexResult - err error - } - - for name, kex := range kexAlgoMap { - a, b := memPipe() - - s := make(chan kexResultErr, 1) - c := make(chan kexResultErr, 1) - var magics handshakeMagics - go func() { - r, e := kex.Client(a, rand.Reader, &magics) - a.Close() - c <- kexResultErr{r, e} - }() - go func() { - r, e := kex.Server(b, rand.Reader, &magics, testSigners["ecdsa"]) - b.Close() - s <- kexResultErr{r, e} - }() - - clientRes := <-c - serverRes := <-s - if clientRes.err != nil { - t.Errorf("client: %v", clientRes.err) - } - if serverRes.err != nil { - t.Errorf("server: %v", serverRes.err) - } - if !reflect.DeepEqual(clientRes.result, serverRes.result) { - t.Errorf("kex %q: mismatch %#v, %#v", name, clientRes.result, serverRes.result) - } - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/keys.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/keys.go deleted file mode 100644 index b682c1741..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/keys.go +++ /dev/null @@ -1,1031 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "crypto" - "crypto/dsa" - "crypto/ecdsa" - "crypto/elliptic" - "crypto/md5" - "crypto/rsa" - "crypto/sha256" - "crypto/x509" - "encoding/asn1" - "encoding/base64" - "encoding/hex" - "encoding/pem" - "errors" - "fmt" - "io" - "math/big" - "strings" - - "golang.org/x/crypto/ed25519" -) - -// These constants represent the algorithm names for key types supported by this -// package. -const ( - KeyAlgoRSA = "ssh-rsa" - KeyAlgoDSA = "ssh-dss" - KeyAlgoECDSA256 = "ecdsa-sha2-nistp256" - KeyAlgoECDSA384 = "ecdsa-sha2-nistp384" - KeyAlgoECDSA521 = "ecdsa-sha2-nistp521" - KeyAlgoED25519 = "ssh-ed25519" -) - -// parsePubKey parses a public key of the given algorithm. -// Use ParsePublicKey for keys with prepended algorithm. -func parsePubKey(in []byte, algo string) (pubKey PublicKey, rest []byte, err error) { - switch algo { - case KeyAlgoRSA: - return parseRSA(in) - case KeyAlgoDSA: - return parseDSA(in) - case KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521: - return parseECDSA(in) - case KeyAlgoED25519: - return parseED25519(in) - case CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoED25519v01: - cert, err := parseCert(in, certToPrivAlgo(algo)) - if err != nil { - return nil, nil, err - } - return cert, nil, nil - } - return nil, nil, fmt.Errorf("ssh: unknown key algorithm: %v", algo) -} - -// parseAuthorizedKey parses a public key in OpenSSH authorized_keys format -// (see sshd(8) manual page) once the options and key type fields have been -// removed. -func parseAuthorizedKey(in []byte) (out PublicKey, comment string, err error) { - in = bytes.TrimSpace(in) - - i := bytes.IndexAny(in, " \t") - if i == -1 { - i = len(in) - } - base64Key := in[:i] - - key := make([]byte, base64.StdEncoding.DecodedLen(len(base64Key))) - n, err := base64.StdEncoding.Decode(key, base64Key) - if err != nil { - return nil, "", err - } - key = key[:n] - out, err = ParsePublicKey(key) - if err != nil { - return nil, "", err - } - comment = string(bytes.TrimSpace(in[i:])) - return out, comment, nil -} - -// ParseKnownHosts parses an entry in the format of the known_hosts file. -// -// The known_hosts format is documented in the sshd(8) manual page. This -// function will parse a single entry from in. On successful return, marker -// will contain the optional marker value (i.e. "cert-authority" or "revoked") -// or else be empty, hosts will contain the hosts that this entry matches, -// pubKey will contain the public key and comment will contain any trailing -// comment at the end of the line. See the sshd(8) manual page for the various -// forms that a host string can take. -// -// The unparsed remainder of the input will be returned in rest. This function -// can be called repeatedly to parse multiple entries. -// -// If no entries were found in the input then err will be io.EOF. Otherwise a -// non-nil err value indicates a parse error. -func ParseKnownHosts(in []byte) (marker string, hosts []string, pubKey PublicKey, comment string, rest []byte, err error) { - for len(in) > 0 { - end := bytes.IndexByte(in, '\n') - if end != -1 { - rest = in[end+1:] - in = in[:end] - } else { - rest = nil - } - - end = bytes.IndexByte(in, '\r') - if end != -1 { - in = in[:end] - } - - in = bytes.TrimSpace(in) - if len(in) == 0 || in[0] == '#' { - in = rest - continue - } - - i := bytes.IndexAny(in, " \t") - if i == -1 { - in = rest - continue - } - - // Strip out the beginning of the known_host key. - // This is either an optional marker or a (set of) hostname(s). - keyFields := bytes.Fields(in) - if len(keyFields) < 3 || len(keyFields) > 5 { - return "", nil, nil, "", nil, errors.New("ssh: invalid entry in known_hosts data") - } - - // keyFields[0] is either "@cert-authority", "@revoked" or a comma separated - // list of hosts - marker := "" - if keyFields[0][0] == '@' { - marker = string(keyFields[0][1:]) - keyFields = keyFields[1:] - } - - hosts := string(keyFields[0]) - // keyFields[1] contains the key type (e.g. “ssh-rsa”). - // However, that information is duplicated inside the - // base64-encoded key and so is ignored here. - - key := bytes.Join(keyFields[2:], []byte(" ")) - if pubKey, comment, err = parseAuthorizedKey(key); err != nil { - return "", nil, nil, "", nil, err - } - - return marker, strings.Split(hosts, ","), pubKey, comment, rest, nil - } - - return "", nil, nil, "", nil, io.EOF -} - -// ParseAuthorizedKeys parses a public key from an authorized_keys -// file used in OpenSSH according to the sshd(8) manual page. -func ParseAuthorizedKey(in []byte) (out PublicKey, comment string, options []string, rest []byte, err error) { - for len(in) > 0 { - end := bytes.IndexByte(in, '\n') - if end != -1 { - rest = in[end+1:] - in = in[:end] - } else { - rest = nil - } - - end = bytes.IndexByte(in, '\r') - if end != -1 { - in = in[:end] - } - - in = bytes.TrimSpace(in) - if len(in) == 0 || in[0] == '#' { - in = rest - continue - } - - i := bytes.IndexAny(in, " \t") - if i == -1 { - in = rest - continue - } - - if out, comment, err = parseAuthorizedKey(in[i:]); err == nil { - return out, comment, options, rest, nil - } - - // No key type recognised. Maybe there's an options field at - // the beginning. - var b byte - inQuote := false - var candidateOptions []string - optionStart := 0 - for i, b = range in { - isEnd := !inQuote && (b == ' ' || b == '\t') - if (b == ',' && !inQuote) || isEnd { - if i-optionStart > 0 { - candidateOptions = append(candidateOptions, string(in[optionStart:i])) - } - optionStart = i + 1 - } - if isEnd { - break - } - if b == '"' && (i == 0 || (i > 0 && in[i-1] != '\\')) { - inQuote = !inQuote - } - } - for i < len(in) && (in[i] == ' ' || in[i] == '\t') { - i++ - } - if i == len(in) { - // Invalid line: unmatched quote - in = rest - continue - } - - in = in[i:] - i = bytes.IndexAny(in, " \t") - if i == -1 { - in = rest - continue - } - - if out, comment, err = parseAuthorizedKey(in[i:]); err == nil { - options = candidateOptions - return out, comment, options, rest, nil - } - - in = rest - continue - } - - return nil, "", nil, nil, errors.New("ssh: no key found") -} - -// ParsePublicKey parses an SSH public key formatted for use in -// the SSH wire protocol according to RFC 4253, section 6.6. -func ParsePublicKey(in []byte) (out PublicKey, err error) { - algo, in, ok := parseString(in) - if !ok { - return nil, errShortRead - } - var rest []byte - out, rest, err = parsePubKey(in, string(algo)) - if len(rest) > 0 { - return nil, errors.New("ssh: trailing junk in public key") - } - - return out, err -} - -// MarshalAuthorizedKey serializes key for inclusion in an OpenSSH -// authorized_keys file. The return value ends with newline. -func MarshalAuthorizedKey(key PublicKey) []byte { - b := &bytes.Buffer{} - b.WriteString(key.Type()) - b.WriteByte(' ') - e := base64.NewEncoder(base64.StdEncoding, b) - e.Write(key.Marshal()) - e.Close() - b.WriteByte('\n') - return b.Bytes() -} - -// PublicKey is an abstraction of different types of public keys. -type PublicKey interface { - // Type returns the key's type, e.g. "ssh-rsa". - Type() string - - // Marshal returns the serialized key data in SSH wire format, - // with the name prefix. - Marshal() []byte - - // Verify that sig is a signature on the given data using this - // key. This function will hash the data appropriately first. - Verify(data []byte, sig *Signature) error -} - -// CryptoPublicKey, if implemented by a PublicKey, -// returns the underlying crypto.PublicKey form of the key. -type CryptoPublicKey interface { - CryptoPublicKey() crypto.PublicKey -} - -// A Signer can create signatures that verify against a public key. -type Signer interface { - // PublicKey returns an associated PublicKey instance. - PublicKey() PublicKey - - // Sign returns raw signature for the given data. This method - // will apply the hash specified for the keytype to the data. - Sign(rand io.Reader, data []byte) (*Signature, error) -} - -type rsaPublicKey rsa.PublicKey - -func (r *rsaPublicKey) Type() string { - return "ssh-rsa" -} - -// parseRSA parses an RSA key according to RFC 4253, section 6.6. -func parseRSA(in []byte) (out PublicKey, rest []byte, err error) { - var w struct { - E *big.Int - N *big.Int - Rest []byte `ssh:"rest"` - } - if err := Unmarshal(in, &w); err != nil { - return nil, nil, err - } - - if w.E.BitLen() > 24 { - return nil, nil, errors.New("ssh: exponent too large") - } - e := w.E.Int64() - if e < 3 || e&1 == 0 { - return nil, nil, errors.New("ssh: incorrect exponent") - } - - var key rsa.PublicKey - key.E = int(e) - key.N = w.N - return (*rsaPublicKey)(&key), w.Rest, nil -} - -func (r *rsaPublicKey) Marshal() []byte { - e := new(big.Int).SetInt64(int64(r.E)) - // RSA publickey struct layout should match the struct used by - // parseRSACert in the x/crypto/ssh/agent package. - wirekey := struct { - Name string - E *big.Int - N *big.Int - }{ - KeyAlgoRSA, - e, - r.N, - } - return Marshal(&wirekey) -} - -func (r *rsaPublicKey) Verify(data []byte, sig *Signature) error { - if sig.Format != r.Type() { - return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, r.Type()) - } - h := crypto.SHA1.New() - h.Write(data) - digest := h.Sum(nil) - return rsa.VerifyPKCS1v15((*rsa.PublicKey)(r), crypto.SHA1, digest, sig.Blob) -} - -func (r *rsaPublicKey) CryptoPublicKey() crypto.PublicKey { - return (*rsa.PublicKey)(r) -} - -type dsaPublicKey dsa.PublicKey - -func (r *dsaPublicKey) Type() string { - return "ssh-dss" -} - -func checkDSAParams(param *dsa.Parameters) error { - // SSH specifies FIPS 186-2, which only provided a single size - // (1024 bits) DSA key. FIPS 186-3 allows for larger key - // sizes, which would confuse SSH. - if l := param.P.BitLen(); l != 1024 { - return fmt.Errorf("ssh: unsupported DSA key size %d", l) - } - - return nil -} - -// parseDSA parses an DSA key according to RFC 4253, section 6.6. -func parseDSA(in []byte) (out PublicKey, rest []byte, err error) { - var w struct { - P, Q, G, Y *big.Int - Rest []byte `ssh:"rest"` - } - if err := Unmarshal(in, &w); err != nil { - return nil, nil, err - } - - param := dsa.Parameters{ - P: w.P, - Q: w.Q, - G: w.G, - } - if err := checkDSAParams(¶m); err != nil { - return nil, nil, err - } - - key := &dsaPublicKey{ - Parameters: param, - Y: w.Y, - } - return key, w.Rest, nil -} - -func (k *dsaPublicKey) Marshal() []byte { - // DSA publickey struct layout should match the struct used by - // parseDSACert in the x/crypto/ssh/agent package. - w := struct { - Name string - P, Q, G, Y *big.Int - }{ - k.Type(), - k.P, - k.Q, - k.G, - k.Y, - } - - return Marshal(&w) -} - -func (k *dsaPublicKey) Verify(data []byte, sig *Signature) error { - if sig.Format != k.Type() { - return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, k.Type()) - } - h := crypto.SHA1.New() - h.Write(data) - digest := h.Sum(nil) - - // Per RFC 4253, section 6.6, - // The value for 'dss_signature_blob' is encoded as a string containing - // r, followed by s (which are 160-bit integers, without lengths or - // padding, unsigned, and in network byte order). - // For DSS purposes, sig.Blob should be exactly 40 bytes in length. - if len(sig.Blob) != 40 { - return errors.New("ssh: DSA signature parse error") - } - r := new(big.Int).SetBytes(sig.Blob[:20]) - s := new(big.Int).SetBytes(sig.Blob[20:]) - if dsa.Verify((*dsa.PublicKey)(k), digest, r, s) { - return nil - } - return errors.New("ssh: signature did not verify") -} - -func (k *dsaPublicKey) CryptoPublicKey() crypto.PublicKey { - return (*dsa.PublicKey)(k) -} - -type dsaPrivateKey struct { - *dsa.PrivateKey -} - -func (k *dsaPrivateKey) PublicKey() PublicKey { - return (*dsaPublicKey)(&k.PrivateKey.PublicKey) -} - -func (k *dsaPrivateKey) Sign(rand io.Reader, data []byte) (*Signature, error) { - h := crypto.SHA1.New() - h.Write(data) - digest := h.Sum(nil) - r, s, err := dsa.Sign(rand, k.PrivateKey, digest) - if err != nil { - return nil, err - } - - sig := make([]byte, 40) - rb := r.Bytes() - sb := s.Bytes() - - copy(sig[20-len(rb):20], rb) - copy(sig[40-len(sb):], sb) - - return &Signature{ - Format: k.PublicKey().Type(), - Blob: sig, - }, nil -} - -type ecdsaPublicKey ecdsa.PublicKey - -func (key *ecdsaPublicKey) Type() string { - return "ecdsa-sha2-" + key.nistID() -} - -func (key *ecdsaPublicKey) nistID() string { - switch key.Params().BitSize { - case 256: - return "nistp256" - case 384: - return "nistp384" - case 521: - return "nistp521" - } - panic("ssh: unsupported ecdsa key size") -} - -type ed25519PublicKey ed25519.PublicKey - -func (key ed25519PublicKey) Type() string { - return KeyAlgoED25519 -} - -func parseED25519(in []byte) (out PublicKey, rest []byte, err error) { - var w struct { - KeyBytes []byte - Rest []byte `ssh:"rest"` - } - - if err := Unmarshal(in, &w); err != nil { - return nil, nil, err - } - - key := ed25519.PublicKey(w.KeyBytes) - - return (ed25519PublicKey)(key), w.Rest, nil -} - -func (key ed25519PublicKey) Marshal() []byte { - w := struct { - Name string - KeyBytes []byte - }{ - KeyAlgoED25519, - []byte(key), - } - return Marshal(&w) -} - -func (key ed25519PublicKey) Verify(b []byte, sig *Signature) error { - if sig.Format != key.Type() { - return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, key.Type()) - } - - edKey := (ed25519.PublicKey)(key) - if ok := ed25519.Verify(edKey, b, sig.Blob); !ok { - return errors.New("ssh: signature did not verify") - } - - return nil -} - -func (k ed25519PublicKey) CryptoPublicKey() crypto.PublicKey { - return ed25519.PublicKey(k) -} - -func supportedEllipticCurve(curve elliptic.Curve) bool { - return curve == elliptic.P256() || curve == elliptic.P384() || curve == elliptic.P521() -} - -// ecHash returns the hash to match the given elliptic curve, see RFC -// 5656, section 6.2.1 -func ecHash(curve elliptic.Curve) crypto.Hash { - bitSize := curve.Params().BitSize - switch { - case bitSize <= 256: - return crypto.SHA256 - case bitSize <= 384: - return crypto.SHA384 - } - return crypto.SHA512 -} - -// parseECDSA parses an ECDSA key according to RFC 5656, section 3.1. -func parseECDSA(in []byte) (out PublicKey, rest []byte, err error) { - var w struct { - Curve string - KeyBytes []byte - Rest []byte `ssh:"rest"` - } - - if err := Unmarshal(in, &w); err != nil { - return nil, nil, err - } - - key := new(ecdsa.PublicKey) - - switch w.Curve { - case "nistp256": - key.Curve = elliptic.P256() - case "nistp384": - key.Curve = elliptic.P384() - case "nistp521": - key.Curve = elliptic.P521() - default: - return nil, nil, errors.New("ssh: unsupported curve") - } - - key.X, key.Y = elliptic.Unmarshal(key.Curve, w.KeyBytes) - if key.X == nil || key.Y == nil { - return nil, nil, errors.New("ssh: invalid curve point") - } - return (*ecdsaPublicKey)(key), w.Rest, nil -} - -func (key *ecdsaPublicKey) Marshal() []byte { - // See RFC 5656, section 3.1. - keyBytes := elliptic.Marshal(key.Curve, key.X, key.Y) - // ECDSA publickey struct layout should match the struct used by - // parseECDSACert in the x/crypto/ssh/agent package. - w := struct { - Name string - ID string - Key []byte - }{ - key.Type(), - key.nistID(), - keyBytes, - } - - return Marshal(&w) -} - -func (key *ecdsaPublicKey) Verify(data []byte, sig *Signature) error { - if sig.Format != key.Type() { - return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, key.Type()) - } - - h := ecHash(key.Curve).New() - h.Write(data) - digest := h.Sum(nil) - - // Per RFC 5656, section 3.1.2, - // The ecdsa_signature_blob value has the following specific encoding: - // mpint r - // mpint s - var ecSig struct { - R *big.Int - S *big.Int - } - - if err := Unmarshal(sig.Blob, &ecSig); err != nil { - return err - } - - if ecdsa.Verify((*ecdsa.PublicKey)(key), digest, ecSig.R, ecSig.S) { - return nil - } - return errors.New("ssh: signature did not verify") -} - -func (k *ecdsaPublicKey) CryptoPublicKey() crypto.PublicKey { - return (*ecdsa.PublicKey)(k) -} - -// NewSignerFromKey takes an *rsa.PrivateKey, *dsa.PrivateKey, -// *ecdsa.PrivateKey or any other crypto.Signer and returns a -// corresponding Signer instance. ECDSA keys must use P-256, P-384 or -// P-521. DSA keys must use parameter size L1024N160. -func NewSignerFromKey(key interface{}) (Signer, error) { - switch key := key.(type) { - case crypto.Signer: - return NewSignerFromSigner(key) - case *dsa.PrivateKey: - return newDSAPrivateKey(key) - default: - return nil, fmt.Errorf("ssh: unsupported key type %T", key) - } -} - -func newDSAPrivateKey(key *dsa.PrivateKey) (Signer, error) { - if err := checkDSAParams(&key.PublicKey.Parameters); err != nil { - return nil, err - } - - return &dsaPrivateKey{key}, nil -} - -type wrappedSigner struct { - signer crypto.Signer - pubKey PublicKey -} - -// NewSignerFromSigner takes any crypto.Signer implementation and -// returns a corresponding Signer interface. This can be used, for -// example, with keys kept in hardware modules. -func NewSignerFromSigner(signer crypto.Signer) (Signer, error) { - pubKey, err := NewPublicKey(signer.Public()) - if err != nil { - return nil, err - } - - return &wrappedSigner{signer, pubKey}, nil -} - -func (s *wrappedSigner) PublicKey() PublicKey { - return s.pubKey -} - -func (s *wrappedSigner) Sign(rand io.Reader, data []byte) (*Signature, error) { - var hashFunc crypto.Hash - - switch key := s.pubKey.(type) { - case *rsaPublicKey, *dsaPublicKey: - hashFunc = crypto.SHA1 - case *ecdsaPublicKey: - hashFunc = ecHash(key.Curve) - case ed25519PublicKey: - default: - return nil, fmt.Errorf("ssh: unsupported key type %T", key) - } - - var digest []byte - if hashFunc != 0 { - h := hashFunc.New() - h.Write(data) - digest = h.Sum(nil) - } else { - digest = data - } - - signature, err := s.signer.Sign(rand, digest, hashFunc) - if err != nil { - return nil, err - } - - // crypto.Signer.Sign is expected to return an ASN.1-encoded signature - // for ECDSA and DSA, but that's not the encoding expected by SSH, so - // re-encode. - switch s.pubKey.(type) { - case *ecdsaPublicKey, *dsaPublicKey: - type asn1Signature struct { - R, S *big.Int - } - asn1Sig := new(asn1Signature) - _, err := asn1.Unmarshal(signature, asn1Sig) - if err != nil { - return nil, err - } - - switch s.pubKey.(type) { - case *ecdsaPublicKey: - signature = Marshal(asn1Sig) - - case *dsaPublicKey: - signature = make([]byte, 40) - r := asn1Sig.R.Bytes() - s := asn1Sig.S.Bytes() - copy(signature[20-len(r):20], r) - copy(signature[40-len(s):40], s) - } - } - - return &Signature{ - Format: s.pubKey.Type(), - Blob: signature, - }, nil -} - -// NewPublicKey takes an *rsa.PublicKey, *dsa.PublicKey, *ecdsa.PublicKey, -// or ed25519.PublicKey returns a corresponding PublicKey instance. -// ECDSA keys must use P-256, P-384 or P-521. -func NewPublicKey(key interface{}) (PublicKey, error) { - switch key := key.(type) { - case *rsa.PublicKey: - return (*rsaPublicKey)(key), nil - case *ecdsa.PublicKey: - if !supportedEllipticCurve(key.Curve) { - return nil, errors.New("ssh: only P-256, P-384 and P-521 EC keys are supported.") - } - return (*ecdsaPublicKey)(key), nil - case *dsa.PublicKey: - return (*dsaPublicKey)(key), nil - case ed25519.PublicKey: - return (ed25519PublicKey)(key), nil - default: - return nil, fmt.Errorf("ssh: unsupported key type %T", key) - } -} - -// ParsePrivateKey returns a Signer from a PEM encoded private key. It supports -// the same keys as ParseRawPrivateKey. -func ParsePrivateKey(pemBytes []byte) (Signer, error) { - key, err := ParseRawPrivateKey(pemBytes) - if err != nil { - return nil, err - } - - return NewSignerFromKey(key) -} - -// ParsePrivateKeyWithPassphrase returns a Signer from a PEM encoded private -// key and passphrase. It supports the same keys as -// ParseRawPrivateKeyWithPassphrase. -func ParsePrivateKeyWithPassphrase(pemBytes, passPhrase []byte) (Signer, error) { - key, err := ParseRawPrivateKeyWithPassphrase(pemBytes, passPhrase) - if err != nil { - return nil, err - } - - return NewSignerFromKey(key) -} - -// encryptedBlock tells whether a private key is -// encrypted by examining its Proc-Type header -// for a mention of ENCRYPTED -// according to RFC 1421 Section 4.6.1.1. -func encryptedBlock(block *pem.Block) bool { - return strings.Contains(block.Headers["Proc-Type"], "ENCRYPTED") -} - -// ParseRawPrivateKey returns a private key from a PEM encoded private key. It -// supports RSA (PKCS#1), DSA (OpenSSL), and ECDSA private keys. -func ParseRawPrivateKey(pemBytes []byte) (interface{}, error) { - block, _ := pem.Decode(pemBytes) - if block == nil { - return nil, errors.New("ssh: no key found") - } - - if encryptedBlock(block) { - return nil, errors.New("ssh: cannot decode encrypted private keys") - } - - switch block.Type { - case "RSA PRIVATE KEY": - return x509.ParsePKCS1PrivateKey(block.Bytes) - case "EC PRIVATE KEY": - return x509.ParseECPrivateKey(block.Bytes) - case "DSA PRIVATE KEY": - return ParseDSAPrivateKey(block.Bytes) - case "OPENSSH PRIVATE KEY": - return parseOpenSSHPrivateKey(block.Bytes) - default: - return nil, fmt.Errorf("ssh: unsupported key type %q", block.Type) - } -} - -// ParseRawPrivateKeyWithPassphrase returns a private key decrypted with -// passphrase from a PEM encoded private key. If wrong passphrase, return -// x509.IncorrectPasswordError. -func ParseRawPrivateKeyWithPassphrase(pemBytes, passPhrase []byte) (interface{}, error) { - block, _ := pem.Decode(pemBytes) - if block == nil { - return nil, errors.New("ssh: no key found") - } - buf := block.Bytes - - if encryptedBlock(block) { - if x509.IsEncryptedPEMBlock(block) { - var err error - buf, err = x509.DecryptPEMBlock(block, passPhrase) - if err != nil { - if err == x509.IncorrectPasswordError { - return nil, err - } - return nil, fmt.Errorf("ssh: cannot decode encrypted private keys: %v", err) - } - } - } - - switch block.Type { - case "RSA PRIVATE KEY": - return x509.ParsePKCS1PrivateKey(buf) - case "EC PRIVATE KEY": - return x509.ParseECPrivateKey(buf) - case "DSA PRIVATE KEY": - return ParseDSAPrivateKey(buf) - case "OPENSSH PRIVATE KEY": - return parseOpenSSHPrivateKey(buf) - default: - return nil, fmt.Errorf("ssh: unsupported key type %q", block.Type) - } -} - -// ParseDSAPrivateKey returns a DSA private key from its ASN.1 DER encoding, as -// specified by the OpenSSL DSA man page. -func ParseDSAPrivateKey(der []byte) (*dsa.PrivateKey, error) { - var k struct { - Version int - P *big.Int - Q *big.Int - G *big.Int - Pub *big.Int - Priv *big.Int - } - rest, err := asn1.Unmarshal(der, &k) - if err != nil { - return nil, errors.New("ssh: failed to parse DSA key: " + err.Error()) - } - if len(rest) > 0 { - return nil, errors.New("ssh: garbage after DSA key") - } - - return &dsa.PrivateKey{ - PublicKey: dsa.PublicKey{ - Parameters: dsa.Parameters{ - P: k.P, - Q: k.Q, - G: k.G, - }, - Y: k.Pub, - }, - X: k.Priv, - }, nil -} - -// Implemented based on the documentation at -// https://github.com/openssh/openssh-portable/blob/master/PROTOCOL.key -func parseOpenSSHPrivateKey(key []byte) (crypto.PrivateKey, error) { - magic := append([]byte("openssh-key-v1"), 0) - if !bytes.Equal(magic, key[0:len(magic)]) { - return nil, errors.New("ssh: invalid openssh private key format") - } - remaining := key[len(magic):] - - var w struct { - CipherName string - KdfName string - KdfOpts string - NumKeys uint32 - PubKey []byte - PrivKeyBlock []byte - } - - if err := Unmarshal(remaining, &w); err != nil { - return nil, err - } - - if w.KdfName != "none" || w.CipherName != "none" { - return nil, errors.New("ssh: cannot decode encrypted private keys") - } - - pk1 := struct { - Check1 uint32 - Check2 uint32 - Keytype string - Rest []byte `ssh:"rest"` - }{} - - if err := Unmarshal(w.PrivKeyBlock, &pk1); err != nil { - return nil, err - } - - if pk1.Check1 != pk1.Check2 { - return nil, errors.New("ssh: checkint mismatch") - } - - // we only handle ed25519 and rsa keys currently - switch pk1.Keytype { - case KeyAlgoRSA: - // https://github.com/openssh/openssh-portable/blob/master/sshkey.c#L2760-L2773 - key := struct { - N *big.Int - E *big.Int - D *big.Int - Iqmp *big.Int - P *big.Int - Q *big.Int - Comment string - Pad []byte `ssh:"rest"` - }{} - - if err := Unmarshal(pk1.Rest, &key); err != nil { - return nil, err - } - - for i, b := range key.Pad { - if int(b) != i+1 { - return nil, errors.New("ssh: padding not as expected") - } - } - - pk := &rsa.PrivateKey{ - PublicKey: rsa.PublicKey{ - N: key.N, - E: int(key.E.Int64()), - }, - D: key.D, - Primes: []*big.Int{key.P, key.Q}, - } - - if err := pk.Validate(); err != nil { - return nil, err - } - - pk.Precompute() - - return pk, nil - case KeyAlgoED25519: - key := struct { - Pub []byte - Priv []byte - Comment string - Pad []byte `ssh:"rest"` - }{} - - if err := Unmarshal(pk1.Rest, &key); err != nil { - return nil, err - } - - if len(key.Priv) != ed25519.PrivateKeySize { - return nil, errors.New("ssh: private key unexpected length") - } - - for i, b := range key.Pad { - if int(b) != i+1 { - return nil, errors.New("ssh: padding not as expected") - } - } - - pk := ed25519.PrivateKey(make([]byte, ed25519.PrivateKeySize)) - copy(pk, key.Priv) - return &pk, nil - default: - return nil, errors.New("ssh: unhandled key type") - } -} - -// FingerprintLegacyMD5 returns the user presentation of the key's -// fingerprint as described by RFC 4716 section 4. -func FingerprintLegacyMD5(pubKey PublicKey) string { - md5sum := md5.Sum(pubKey.Marshal()) - hexarray := make([]string, len(md5sum)) - for i, c := range md5sum { - hexarray[i] = hex.EncodeToString([]byte{c}) - } - return strings.Join(hexarray, ":") -} - -// FingerprintSHA256 returns the user presentation of the key's -// fingerprint as unpadded base64 encoded sha256 hash. -// This format was introduced from OpenSSH 6.8. -// https://www.openssh.com/txt/release-6.8 -// https://tools.ietf.org/html/rfc4648#section-3.2 (unpadded base64 encoding) -func FingerprintSHA256(pubKey PublicKey) string { - sha256sum := sha256.Sum256(pubKey.Marshal()) - hash := base64.RawStdEncoding.EncodeToString(sha256sum[:]) - return "SHA256:" + hash -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/keys_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/keys_test.go deleted file mode 100644 index 20ab954e2..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/keys_test.go +++ /dev/null @@ -1,500 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "crypto/dsa" - "crypto/ecdsa" - "crypto/elliptic" - "crypto/rand" - "crypto/rsa" - "crypto/x509" - "encoding/base64" - "fmt" - "reflect" - "strings" - "testing" - - "golang.org/x/crypto/ed25519" - "golang.org/x/crypto/ssh/testdata" -) - -func rawKey(pub PublicKey) interface{} { - switch k := pub.(type) { - case *rsaPublicKey: - return (*rsa.PublicKey)(k) - case *dsaPublicKey: - return (*dsa.PublicKey)(k) - case *ecdsaPublicKey: - return (*ecdsa.PublicKey)(k) - case ed25519PublicKey: - return (ed25519.PublicKey)(k) - case *Certificate: - return k - } - panic("unknown key type") -} - -func TestKeyMarshalParse(t *testing.T) { - for _, priv := range testSigners { - pub := priv.PublicKey() - roundtrip, err := ParsePublicKey(pub.Marshal()) - if err != nil { - t.Errorf("ParsePublicKey(%T): %v", pub, err) - } - - k1 := rawKey(pub) - k2 := rawKey(roundtrip) - - if !reflect.DeepEqual(k1, k2) { - t.Errorf("got %#v in roundtrip, want %#v", k2, k1) - } - } -} - -func TestUnsupportedCurves(t *testing.T) { - raw, err := ecdsa.GenerateKey(elliptic.P224(), rand.Reader) - if err != nil { - t.Fatalf("GenerateKey: %v", err) - } - - if _, err = NewSignerFromKey(raw); err == nil || !strings.Contains(err.Error(), "only P-256") { - t.Fatalf("NewPrivateKey should not succeed with P-224, got: %v", err) - } - - if _, err = NewPublicKey(&raw.PublicKey); err == nil || !strings.Contains(err.Error(), "only P-256") { - t.Fatalf("NewPublicKey should not succeed with P-224, got: %v", err) - } -} - -func TestNewPublicKey(t *testing.T) { - for _, k := range testSigners { - raw := rawKey(k.PublicKey()) - // Skip certificates, as NewPublicKey does not support them. - if _, ok := raw.(*Certificate); ok { - continue - } - pub, err := NewPublicKey(raw) - if err != nil { - t.Errorf("NewPublicKey(%#v): %v", raw, err) - } - if !reflect.DeepEqual(k.PublicKey(), pub) { - t.Errorf("NewPublicKey(%#v) = %#v, want %#v", raw, pub, k.PublicKey()) - } - } -} - -func TestKeySignVerify(t *testing.T) { - for _, priv := range testSigners { - pub := priv.PublicKey() - - data := []byte("sign me") - sig, err := priv.Sign(rand.Reader, data) - if err != nil { - t.Fatalf("Sign(%T): %v", priv, err) - } - - if err := pub.Verify(data, sig); err != nil { - t.Errorf("publicKey.Verify(%T): %v", priv, err) - } - sig.Blob[5]++ - if err := pub.Verify(data, sig); err == nil { - t.Errorf("publicKey.Verify on broken sig did not fail") - } - } -} - -func TestParseRSAPrivateKey(t *testing.T) { - key := testPrivateKeys["rsa"] - - rsa, ok := key.(*rsa.PrivateKey) - if !ok { - t.Fatalf("got %T, want *rsa.PrivateKey", rsa) - } - - if err := rsa.Validate(); err != nil { - t.Errorf("Validate: %v", err) - } -} - -func TestParseECPrivateKey(t *testing.T) { - key := testPrivateKeys["ecdsa"] - - ecKey, ok := key.(*ecdsa.PrivateKey) - if !ok { - t.Fatalf("got %T, want *ecdsa.PrivateKey", ecKey) - } - - if !validateECPublicKey(ecKey.Curve, ecKey.X, ecKey.Y) { - t.Fatalf("public key does not validate.") - } -} - -// See Issue https://github.com/golang/go/issues/6650. -func TestParseEncryptedPrivateKeysFails(t *testing.T) { - const wantSubstring = "encrypted" - for i, tt := range testdata.PEMEncryptedKeys { - _, err := ParsePrivateKey(tt.PEMBytes) - if err == nil { - t.Errorf("#%d key %s: ParsePrivateKey successfully parsed, expected an error", i, tt.Name) - continue - } - - if !strings.Contains(err.Error(), wantSubstring) { - t.Errorf("#%d key %s: got error %q, want substring %q", i, tt.Name, err, wantSubstring) - } - } -} - -// Parse encrypted private keys with passphrase -func TestParseEncryptedPrivateKeysWithPassphrase(t *testing.T) { - data := []byte("sign me") - for _, tt := range testdata.PEMEncryptedKeys { - s, err := ParsePrivateKeyWithPassphrase(tt.PEMBytes, []byte(tt.EncryptionKey)) - if err != nil { - t.Fatalf("ParsePrivateKeyWithPassphrase returned error: %s", err) - continue - } - sig, err := s.Sign(rand.Reader, data) - if err != nil { - t.Fatalf("dsa.Sign: %v", err) - } - if err := s.PublicKey().Verify(data, sig); err != nil { - t.Errorf("Verify failed: %v", err) - } - } - - tt := testdata.PEMEncryptedKeys[0] - _, err := ParsePrivateKeyWithPassphrase(tt.PEMBytes, []byte("incorrect")) - if err != x509.IncorrectPasswordError { - t.Fatalf("got %v want IncorrectPasswordError", err) - } -} - -func TestParseDSA(t *testing.T) { - // We actually exercise the ParsePrivateKey codepath here, as opposed to - // using the ParseRawPrivateKey+NewSignerFromKey path that testdata_test.go - // uses. - s, err := ParsePrivateKey(testdata.PEMBytes["dsa"]) - if err != nil { - t.Fatalf("ParsePrivateKey returned error: %s", err) - } - - data := []byte("sign me") - sig, err := s.Sign(rand.Reader, data) - if err != nil { - t.Fatalf("dsa.Sign: %v", err) - } - - if err := s.PublicKey().Verify(data, sig); err != nil { - t.Errorf("Verify failed: %v", err) - } -} - -// Tests for authorized_keys parsing. - -// getTestKey returns a public key, and its base64 encoding. -func getTestKey() (PublicKey, string) { - k := testPublicKeys["rsa"] - - b := &bytes.Buffer{} - e := base64.NewEncoder(base64.StdEncoding, b) - e.Write(k.Marshal()) - e.Close() - - return k, b.String() -} - -func TestMarshalParsePublicKey(t *testing.T) { - pub, pubSerialized := getTestKey() - line := fmt.Sprintf("%s %s user@host", pub.Type(), pubSerialized) - - authKeys := MarshalAuthorizedKey(pub) - actualFields := strings.Fields(string(authKeys)) - if len(actualFields) == 0 { - t.Fatalf("failed authKeys: %v", authKeys) - } - - // drop the comment - expectedFields := strings.Fields(line)[0:2] - - if !reflect.DeepEqual(actualFields, expectedFields) { - t.Errorf("got %v, expected %v", actualFields, expectedFields) - } - - actPub, _, _, _, err := ParseAuthorizedKey([]byte(line)) - if err != nil { - t.Fatalf("cannot parse %v: %v", line, err) - } - if !reflect.DeepEqual(actPub, pub) { - t.Errorf("got %v, expected %v", actPub, pub) - } -} - -type authResult struct { - pubKey PublicKey - options []string - comments string - rest string - ok bool -} - -func testAuthorizedKeys(t *testing.T, authKeys []byte, expected []authResult) { - rest := authKeys - var values []authResult - for len(rest) > 0 { - var r authResult - var err error - r.pubKey, r.comments, r.options, rest, err = ParseAuthorizedKey(rest) - r.ok = (err == nil) - t.Log(err) - r.rest = string(rest) - values = append(values, r) - } - - if !reflect.DeepEqual(values, expected) { - t.Errorf("got %#v, expected %#v", values, expected) - } -} - -func TestAuthorizedKeyBasic(t *testing.T) { - pub, pubSerialized := getTestKey() - line := "ssh-rsa " + pubSerialized + " user@host" - testAuthorizedKeys(t, []byte(line), - []authResult{ - {pub, nil, "user@host", "", true}, - }) -} - -func TestAuth(t *testing.T) { - pub, pubSerialized := getTestKey() - authWithOptions := []string{ - `# comments to ignore before any keys...`, - ``, - `env="HOME=/home/root",no-port-forwarding ssh-rsa ` + pubSerialized + ` user@host`, - `# comments to ignore, along with a blank line`, - ``, - `env="HOME=/home/root2" ssh-rsa ` + pubSerialized + ` user2@host2`, - ``, - `# more comments, plus a invalid entry`, - `ssh-rsa data-that-will-not-parse user@host3`, - } - for _, eol := range []string{"\n", "\r\n"} { - authOptions := strings.Join(authWithOptions, eol) - rest2 := strings.Join(authWithOptions[3:], eol) - rest3 := strings.Join(authWithOptions[6:], eol) - testAuthorizedKeys(t, []byte(authOptions), []authResult{ - {pub, []string{`env="HOME=/home/root"`, "no-port-forwarding"}, "user@host", rest2, true}, - {pub, []string{`env="HOME=/home/root2"`}, "user2@host2", rest3, true}, - {nil, nil, "", "", false}, - }) - } -} - -func TestAuthWithQuotedSpaceInEnv(t *testing.T) { - pub, pubSerialized := getTestKey() - authWithQuotedSpaceInEnv := []byte(`env="HOME=/home/root dir",no-port-forwarding ssh-rsa ` + pubSerialized + ` user@host`) - testAuthorizedKeys(t, []byte(authWithQuotedSpaceInEnv), []authResult{ - {pub, []string{`env="HOME=/home/root dir"`, "no-port-forwarding"}, "user@host", "", true}, - }) -} - -func TestAuthWithQuotedCommaInEnv(t *testing.T) { - pub, pubSerialized := getTestKey() - authWithQuotedCommaInEnv := []byte(`env="HOME=/home/root,dir",no-port-forwarding ssh-rsa ` + pubSerialized + ` user@host`) - testAuthorizedKeys(t, []byte(authWithQuotedCommaInEnv), []authResult{ - {pub, []string{`env="HOME=/home/root,dir"`, "no-port-forwarding"}, "user@host", "", true}, - }) -} - -func TestAuthWithQuotedQuoteInEnv(t *testing.T) { - pub, pubSerialized := getTestKey() - authWithQuotedQuoteInEnv := []byte(`env="HOME=/home/\"root dir",no-port-forwarding` + "\t" + `ssh-rsa` + "\t" + pubSerialized + ` user@host`) - authWithDoubleQuotedQuote := []byte(`no-port-forwarding,env="HOME=/home/ \"root dir\"" ssh-rsa ` + pubSerialized + "\t" + `user@host`) - testAuthorizedKeys(t, []byte(authWithQuotedQuoteInEnv), []authResult{ - {pub, []string{`env="HOME=/home/\"root dir"`, "no-port-forwarding"}, "user@host", "", true}, - }) - - testAuthorizedKeys(t, []byte(authWithDoubleQuotedQuote), []authResult{ - {pub, []string{"no-port-forwarding", `env="HOME=/home/ \"root dir\""`}, "user@host", "", true}, - }) -} - -func TestAuthWithInvalidSpace(t *testing.T) { - _, pubSerialized := getTestKey() - authWithInvalidSpace := []byte(`env="HOME=/home/root dir", no-port-forwarding ssh-rsa ` + pubSerialized + ` user@host -#more to follow but still no valid keys`) - testAuthorizedKeys(t, []byte(authWithInvalidSpace), []authResult{ - {nil, nil, "", "", false}, - }) -} - -func TestAuthWithMissingQuote(t *testing.T) { - pub, pubSerialized := getTestKey() - authWithMissingQuote := []byte(`env="HOME=/home/root,no-port-forwarding ssh-rsa ` + pubSerialized + ` user@host -env="HOME=/home/root",shared-control ssh-rsa ` + pubSerialized + ` user@host`) - - testAuthorizedKeys(t, []byte(authWithMissingQuote), []authResult{ - {pub, []string{`env="HOME=/home/root"`, `shared-control`}, "user@host", "", true}, - }) -} - -func TestInvalidEntry(t *testing.T) { - authInvalid := []byte(`ssh-rsa`) - _, _, _, _, err := ParseAuthorizedKey(authInvalid) - if err == nil { - t.Errorf("got valid entry for %q", authInvalid) - } -} - -var knownHostsParseTests = []struct { - input string - err string - - marker string - comment string - hosts []string - rest string -}{ - { - "", - "EOF", - - "", "", nil, "", - }, - { - "# Just a comment", - "EOF", - - "", "", nil, "", - }, - { - " \t ", - "EOF", - - "", "", nil, "", - }, - { - "localhost ssh-rsa {RSAPUB}", - "", - - "", "", []string{"localhost"}, "", - }, - { - "localhost\tssh-rsa {RSAPUB}", - "", - - "", "", []string{"localhost"}, "", - }, - { - "localhost\tssh-rsa {RSAPUB}\tcomment comment", - "", - - "", "comment comment", []string{"localhost"}, "", - }, - { - "localhost\tssh-rsa {RSAPUB}\tcomment comment\n", - "", - - "", "comment comment", []string{"localhost"}, "", - }, - { - "localhost\tssh-rsa {RSAPUB}\tcomment comment\r\n", - "", - - "", "comment comment", []string{"localhost"}, "", - }, - { - "localhost\tssh-rsa {RSAPUB}\tcomment comment\r\nnext line", - "", - - "", "comment comment", []string{"localhost"}, "next line", - }, - { - "localhost,[host2:123]\tssh-rsa {RSAPUB}\tcomment comment", - "", - - "", "comment comment", []string{"localhost", "[host2:123]"}, "", - }, - { - "@marker \tlocalhost,[host2:123]\tssh-rsa {RSAPUB}", - "", - - "marker", "", []string{"localhost", "[host2:123]"}, "", - }, - { - "@marker \tlocalhost,[host2:123]\tssh-rsa aabbccdd", - "short read", - - "", "", nil, "", - }, -} - -func TestKnownHostsParsing(t *testing.T) { - rsaPub, rsaPubSerialized := getTestKey() - - for i, test := range knownHostsParseTests { - var expectedKey PublicKey - const rsaKeyToken = "{RSAPUB}" - - input := test.input - if strings.Contains(input, rsaKeyToken) { - expectedKey = rsaPub - input = strings.Replace(test.input, rsaKeyToken, rsaPubSerialized, -1) - } - - marker, hosts, pubKey, comment, rest, err := ParseKnownHosts([]byte(input)) - if err != nil { - if len(test.err) == 0 { - t.Errorf("#%d: unexpectedly failed with %q", i, err) - } else if !strings.Contains(err.Error(), test.err) { - t.Errorf("#%d: expected error containing %q, but got %q", i, test.err, err) - } - continue - } else if len(test.err) != 0 { - t.Errorf("#%d: succeeded but expected error including %q", i, test.err) - continue - } - - if !reflect.DeepEqual(expectedKey, pubKey) { - t.Errorf("#%d: expected key %#v, but got %#v", i, expectedKey, pubKey) - } - - if marker != test.marker { - t.Errorf("#%d: expected marker %q, but got %q", i, test.marker, marker) - } - - if comment != test.comment { - t.Errorf("#%d: expected comment %q, but got %q", i, test.comment, comment) - } - - if !reflect.DeepEqual(test.hosts, hosts) { - t.Errorf("#%d: expected hosts %#v, but got %#v", i, test.hosts, hosts) - } - - if rest := string(rest); rest != test.rest { - t.Errorf("#%d: expected remaining input to be %q, but got %q", i, test.rest, rest) - } - } -} - -func TestFingerprintLegacyMD5(t *testing.T) { - pub, _ := getTestKey() - fingerprint := FingerprintLegacyMD5(pub) - want := "fb:61:6d:1a:e3:f0:95:45:3c:a0:79:be:4a:93:63:66" // ssh-keygen -lf -E md5 rsa - if fingerprint != want { - t.Errorf("got fingerprint %q want %q", fingerprint, want) - } -} - -func TestFingerprintSHA256(t *testing.T) { - pub, _ := getTestKey() - fingerprint := FingerprintSHA256(pub) - want := "SHA256:Anr3LjZK8YVpjrxu79myrW9Hrb/wpcMNpVvTq/RcBm8" // ssh-keygen -lf rsa - if fingerprint != want { - t.Errorf("got fingerprint %q want %q", fingerprint, want) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/knownhosts/knownhosts.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/knownhosts/knownhosts.go deleted file mode 100644 index ea92b2983..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/knownhosts/knownhosts.go +++ /dev/null @@ -1,546 +0,0 @@ -// Copyright 2017 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package knownhosts implements a parser for the OpenSSH -// known_hosts host key database. -package knownhosts - -import ( - "bufio" - "bytes" - "crypto/hmac" - "crypto/rand" - "crypto/sha1" - "encoding/base64" - "errors" - "fmt" - "io" - "net" - "os" - "strings" - - "golang.org/x/crypto/ssh" -) - -// See the sshd manpage -// (http://man.openbsd.org/sshd#SSH_KNOWN_HOSTS_FILE_FORMAT) for -// background. - -type addr struct{ host, port string } - -func (a *addr) String() string { - h := a.host - if strings.Contains(h, ":") { - h = "[" + h + "]" - } - return h + ":" + a.port -} - -type matcher interface { - match([]addr) bool -} - -type hostPattern struct { - negate bool - addr addr -} - -func (p *hostPattern) String() string { - n := "" - if p.negate { - n = "!" - } - - return n + p.addr.String() -} - -type hostPatterns []hostPattern - -func (ps hostPatterns) match(addrs []addr) bool { - matched := false - for _, p := range ps { - for _, a := range addrs { - m := p.match(a) - if !m { - continue - } - if p.negate { - return false - } - matched = true - } - } - return matched -} - -// See -// https://android.googlesource.com/platform/external/openssh/+/ab28f5495c85297e7a597c1ba62e996416da7c7e/addrmatch.c -// The matching of * has no regard for separators, unlike filesystem globs -func wildcardMatch(pat []byte, str []byte) bool { - for { - if len(pat) == 0 { - return len(str) == 0 - } - if len(str) == 0 { - return false - } - - if pat[0] == '*' { - if len(pat) == 1 { - return true - } - - for j := range str { - if wildcardMatch(pat[1:], str[j:]) { - return true - } - } - return false - } - - if pat[0] == '?' || pat[0] == str[0] { - pat = pat[1:] - str = str[1:] - } else { - return false - } - } -} - -func (l *hostPattern) match(a addr) bool { - return wildcardMatch([]byte(l.addr.host), []byte(a.host)) && l.addr.port == a.port -} - -type keyDBLine struct { - cert bool - matcher matcher - knownKey KnownKey -} - -func serialize(k ssh.PublicKey) string { - return k.Type() + " " + base64.StdEncoding.EncodeToString(k.Marshal()) -} - -func (l *keyDBLine) match(addrs []addr) bool { - return l.matcher.match(addrs) -} - -type hostKeyDB struct { - // Serialized version of revoked keys - revoked map[string]*KnownKey - lines []keyDBLine -} - -func newHostKeyDB() *hostKeyDB { - db := &hostKeyDB{ - revoked: make(map[string]*KnownKey), - } - - return db -} - -func keyEq(a, b ssh.PublicKey) bool { - return bytes.Equal(a.Marshal(), b.Marshal()) -} - -// IsAuthorityForHost can be used as a callback in ssh.CertChecker -func (db *hostKeyDB) IsHostAuthority(remote ssh.PublicKey, address string) bool { - h, p, err := net.SplitHostPort(address) - if err != nil { - return false - } - a := addr{host: h, port: p} - - for _, l := range db.lines { - if l.cert && keyEq(l.knownKey.Key, remote) && l.match([]addr{a}) { - return true - } - } - return false -} - -// IsRevoked can be used as a callback in ssh.CertChecker -func (db *hostKeyDB) IsRevoked(key *ssh.Certificate) bool { - _, ok := db.revoked[string(key.Marshal())] - return ok -} - -const markerCert = "@cert-authority" -const markerRevoked = "@revoked" - -func nextWord(line []byte) (string, []byte) { - i := bytes.IndexAny(line, "\t ") - if i == -1 { - return string(line), nil - } - - return string(line[:i]), bytes.TrimSpace(line[i:]) -} - -func parseLine(line []byte) (marker, host string, key ssh.PublicKey, err error) { - if w, next := nextWord(line); w == markerCert || w == markerRevoked { - marker = w - line = next - } - - host, line = nextWord(line) - if len(line) == 0 { - return "", "", nil, errors.New("knownhosts: missing host pattern") - } - - // ignore the keytype as it's in the key blob anyway. - _, line = nextWord(line) - if len(line) == 0 { - return "", "", nil, errors.New("knownhosts: missing key type pattern") - } - - keyBlob, _ := nextWord(line) - - keyBytes, err := base64.StdEncoding.DecodeString(keyBlob) - if err != nil { - return "", "", nil, err - } - key, err = ssh.ParsePublicKey(keyBytes) - if err != nil { - return "", "", nil, err - } - - return marker, host, key, nil -} - -func (db *hostKeyDB) parseLine(line []byte, filename string, linenum int) error { - marker, pattern, key, err := parseLine(line) - if err != nil { - return err - } - - if marker == markerRevoked { - db.revoked[string(key.Marshal())] = &KnownKey{ - Key: key, - Filename: filename, - Line: linenum, - } - - return nil - } - - entry := keyDBLine{ - cert: marker == markerCert, - knownKey: KnownKey{ - Filename: filename, - Line: linenum, - Key: key, - }, - } - - if pattern[0] == '|' { - entry.matcher, err = newHashedHost(pattern) - } else { - entry.matcher, err = newHostnameMatcher(pattern) - } - - if err != nil { - return err - } - - db.lines = append(db.lines, entry) - return nil -} - -func newHostnameMatcher(pattern string) (matcher, error) { - var hps hostPatterns - for _, p := range strings.Split(pattern, ",") { - if len(p) == 0 { - continue - } - - var a addr - var negate bool - if p[0] == '!' { - negate = true - p = p[1:] - } - - if len(p) == 0 { - return nil, errors.New("knownhosts: negation without following hostname") - } - - var err error - if p[0] == '[' { - a.host, a.port, err = net.SplitHostPort(p) - if err != nil { - return nil, err - } - } else { - a.host, a.port, err = net.SplitHostPort(p) - if err != nil { - a.host = p - a.port = "22" - } - } - hps = append(hps, hostPattern{ - negate: negate, - addr: a, - }) - } - return hps, nil -} - -// KnownKey represents a key declared in a known_hosts file. -type KnownKey struct { - Key ssh.PublicKey - Filename string - Line int -} - -func (k *KnownKey) String() string { - return fmt.Sprintf("%s:%d: %s", k.Filename, k.Line, serialize(k.Key)) -} - -// KeyError is returned if we did not find the key in the host key -// database, or there was a mismatch. Typically, in batch -// applications, this should be interpreted as failure. Interactive -// applications can offer an interactive prompt to the user. -type KeyError struct { - // Want holds the accepted host keys. For each key algorithm, - // there can be one hostkey. If Want is empty, the host is - // unknown. If Want is non-empty, there was a mismatch, which - // can signify a MITM attack. - Want []KnownKey -} - -func (u *KeyError) Error() string { - if len(u.Want) == 0 { - return "knownhosts: key is unknown" - } - return "knownhosts: key mismatch" -} - -// RevokedError is returned if we found a key that was revoked. -type RevokedError struct { - Revoked KnownKey -} - -func (r *RevokedError) Error() string { - return "knownhosts: key is revoked" -} - -// check checks a key against the host database. This should not be -// used for verifying certificates. -func (db *hostKeyDB) check(address string, remote net.Addr, remoteKey ssh.PublicKey) error { - if revoked := db.revoked[string(remoteKey.Marshal())]; revoked != nil { - return &RevokedError{Revoked: *revoked} - } - - host, port, err := net.SplitHostPort(remote.String()) - if err != nil { - return fmt.Errorf("knownhosts: SplitHostPort(%s): %v", remote, err) - } - - addrs := []addr{ - {host, port}, - } - - if address != "" { - host, port, err := net.SplitHostPort(address) - if err != nil { - return fmt.Errorf("knownhosts: SplitHostPort(%s): %v", address, err) - } - - addrs = append(addrs, addr{host, port}) - } - - return db.checkAddrs(addrs, remoteKey) -} - -// checkAddrs checks if we can find the given public key for any of -// the given addresses. If we only find an entry for the IP address, -// or only the hostname, then this still succeeds. -func (db *hostKeyDB) checkAddrs(addrs []addr, remoteKey ssh.PublicKey) error { - // TODO(hanwen): are these the right semantics? What if there - // is just a key for the IP address, but not for the - // hostname? - - // Algorithm => key. - knownKeys := map[string]KnownKey{} - for _, l := range db.lines { - if l.match(addrs) { - typ := l.knownKey.Key.Type() - if _, ok := knownKeys[typ]; !ok { - knownKeys[typ] = l.knownKey - } - } - } - - keyErr := &KeyError{} - for _, v := range knownKeys { - keyErr.Want = append(keyErr.Want, v) - } - - // Unknown remote host. - if len(knownKeys) == 0 { - return keyErr - } - - // If the remote host starts using a different, unknown key type, we - // also interpret that as a mismatch. - if known, ok := knownKeys[remoteKey.Type()]; !ok || !keyEq(known.Key, remoteKey) { - return keyErr - } - - return nil -} - -// The Read function parses file contents. -func (db *hostKeyDB) Read(r io.Reader, filename string) error { - scanner := bufio.NewScanner(r) - - lineNum := 0 - for scanner.Scan() { - lineNum++ - line := scanner.Bytes() - line = bytes.TrimSpace(line) - if len(line) == 0 || line[0] == '#' { - continue - } - - if err := db.parseLine(line, filename, lineNum); err != nil { - return fmt.Errorf("knownhosts: %s:%d: %v", filename, lineNum, err) - } - } - return scanner.Err() -} - -// New creates a host key callback from the given OpenSSH host key -// files. The returned callback is for use in -// ssh.ClientConfig.HostKeyCallback. Hashed hostnames are not supported. -func New(files ...string) (ssh.HostKeyCallback, error) { - db := newHostKeyDB() - for _, fn := range files { - f, err := os.Open(fn) - if err != nil { - return nil, err - } - defer f.Close() - if err := db.Read(f, fn); err != nil { - return nil, err - } - } - - var certChecker ssh.CertChecker - certChecker.IsHostAuthority = db.IsHostAuthority - certChecker.IsRevoked = db.IsRevoked - certChecker.HostKeyFallback = db.check - - return certChecker.CheckHostKey, nil -} - -// Normalize normalizes an address into the form used in known_hosts -func Normalize(address string) string { - host, port, err := net.SplitHostPort(address) - if err != nil { - host = address - port = "22" - } - entry := host - if port != "22" { - entry = "[" + entry + "]:" + port - } else if strings.Contains(host, ":") && !strings.HasPrefix(host, "[") { - entry = "[" + entry + "]" - } - return entry -} - -// Line returns a line to add append to the known_hosts files. -func Line(addresses []string, key ssh.PublicKey) string { - var trimmed []string - for _, a := range addresses { - trimmed = append(trimmed, Normalize(a)) - } - - return strings.Join(trimmed, ",") + " " + serialize(key) -} - -// HashHostname hashes the given hostname. The hostname is not -// normalized before hashing. -func HashHostname(hostname string) string { - // TODO(hanwen): check if we can safely normalize this always. - salt := make([]byte, sha1.Size) - - _, err := rand.Read(salt) - if err != nil { - panic(fmt.Sprintf("crypto/rand failure %v", err)) - } - - hash := hashHost(hostname, salt) - return encodeHash(sha1HashType, salt, hash) -} - -func decodeHash(encoded string) (hashType string, salt, hash []byte, err error) { - if len(encoded) == 0 || encoded[0] != '|' { - err = errors.New("knownhosts: hashed host must start with '|'") - return - } - components := strings.Split(encoded, "|") - if len(components) != 4 { - err = fmt.Errorf("knownhosts: got %d components, want 3", len(components)) - return - } - - hashType = components[1] - if salt, err = base64.StdEncoding.DecodeString(components[2]); err != nil { - return - } - if hash, err = base64.StdEncoding.DecodeString(components[3]); err != nil { - return - } - return -} - -func encodeHash(typ string, salt []byte, hash []byte) string { - return strings.Join([]string{"", - typ, - base64.StdEncoding.EncodeToString(salt), - base64.StdEncoding.EncodeToString(hash), - }, "|") -} - -// See https://android.googlesource.com/platform/external/openssh/+/ab28f5495c85297e7a597c1ba62e996416da7c7e/hostfile.c#120 -func hashHost(hostname string, salt []byte) []byte { - mac := hmac.New(sha1.New, salt) - mac.Write([]byte(hostname)) - return mac.Sum(nil) -} - -type hashedHost struct { - salt []byte - hash []byte -} - -const sha1HashType = "1" - -func newHashedHost(encoded string) (*hashedHost, error) { - typ, salt, hash, err := decodeHash(encoded) - if err != nil { - return nil, err - } - - // The type field seems for future algorithm agility, but it's - // actually hardcoded in openssh currently, see - // https://android.googlesource.com/platform/external/openssh/+/ab28f5495c85297e7a597c1ba62e996416da7c7e/hostfile.c#120 - if typ != sha1HashType { - return nil, fmt.Errorf("knownhosts: got hash type %s, must be '1'", typ) - } - - return &hashedHost{salt: salt, hash: hash}, nil -} - -func (h *hashedHost) match(addrs []addr) bool { - for _, a := range addrs { - if bytes.Equal(hashHost(Normalize(a.String()), h.salt), h.hash) { - return true - } - } - return false -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/knownhosts/knownhosts_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/knownhosts/knownhosts_test.go deleted file mode 100644 index be7cc0e80..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/knownhosts/knownhosts_test.go +++ /dev/null @@ -1,329 +0,0 @@ -// Copyright 2017 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package knownhosts - -import ( - "bytes" - "fmt" - "net" - "reflect" - "testing" - - "golang.org/x/crypto/ssh" -) - -const edKeyStr = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGBAarftlLeoyf+v+nVchEZII/vna2PCV8FaX4vsF5BX" -const alternateEdKeyStr = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIXffBYeYL+WVzVru8npl5JHt2cjlr4ornFTWzoij9sx" -const ecKeyStr = "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNLCu01+wpXe3xB5olXCN4SqU2rQu0qjSRKJO4Bg+JRCPU+ENcgdA5srTU8xYDz/GEa4dzK5ldPw4J/gZgSXCMs=" - -var ecKey, alternateEdKey, edKey ssh.PublicKey -var testAddr = &net.TCPAddr{ - IP: net.IP{198, 41, 30, 196}, - Port: 22, -} - -var testAddr6 = &net.TCPAddr{ - IP: net.IP{198, 41, 30, 196, - 1, 2, 3, 4, - 1, 2, 3, 4, - 1, 2, 3, 4, - }, - Port: 22, -} - -func init() { - var err error - ecKey, _, _, _, err = ssh.ParseAuthorizedKey([]byte(ecKeyStr)) - if err != nil { - panic(err) - } - edKey, _, _, _, err = ssh.ParseAuthorizedKey([]byte(edKeyStr)) - if err != nil { - panic(err) - } - alternateEdKey, _, _, _, err = ssh.ParseAuthorizedKey([]byte(alternateEdKeyStr)) - if err != nil { - panic(err) - } -} - -func testDB(t *testing.T, s string) *hostKeyDB { - db := newHostKeyDB() - if err := db.Read(bytes.NewBufferString(s), "testdb"); err != nil { - t.Fatalf("Read: %v", err) - } - - return db -} - -func TestRevoked(t *testing.T) { - db := testDB(t, "\n\n@revoked * "+edKeyStr+"\n") - want := &RevokedError{ - Revoked: KnownKey{ - Key: edKey, - Filename: "testdb", - Line: 3, - }, - } - if err := db.check("", &net.TCPAddr{ - Port: 42, - }, edKey); err == nil { - t.Fatal("no error for revoked key") - } else if !reflect.DeepEqual(want, err) { - t.Fatalf("got %#v, want %#v", want, err) - } -} - -func TestHostAuthority(t *testing.T) { - for _, m := range []struct { - authorityFor string - address string - - good bool - }{ - {authorityFor: "localhost", address: "localhost:22", good: true}, - {authorityFor: "localhost", address: "localhost", good: false}, - {authorityFor: "localhost", address: "localhost:1234", good: false}, - {authorityFor: "[localhost]:1234", address: "localhost:1234", good: true}, - {authorityFor: "[localhost]:1234", address: "localhost:22", good: false}, - {authorityFor: "[localhost]:1234", address: "localhost", good: false}, - } { - db := testDB(t, `@cert-authority `+m.authorityFor+` `+edKeyStr) - if ok := db.IsHostAuthority(db.lines[0].knownKey.Key, m.address); ok != m.good { - t.Errorf("IsHostAuthority: authority %s, address %s, wanted good = %v, got good = %v", - m.authorityFor, m.address, m.good, ok) - } - } -} - -func TestBracket(t *testing.T) { - db := testDB(t, `[git.eclipse.org]:29418,[198.41.30.196]:29418 `+edKeyStr) - - if err := db.check("git.eclipse.org:29418", &net.TCPAddr{ - IP: net.IP{198, 41, 30, 196}, - Port: 29418, - }, edKey); err != nil { - t.Errorf("got error %v, want none", err) - } - - if err := db.check("git.eclipse.org:29419", &net.TCPAddr{ - Port: 42, - }, edKey); err == nil { - t.Fatalf("no error for unknown address") - } else if ke, ok := err.(*KeyError); !ok { - t.Fatalf("got type %T, want *KeyError", err) - } else if len(ke.Want) > 0 { - t.Fatalf("got Want %v, want []", ke.Want) - } -} - -func TestNewKeyType(t *testing.T) { - str := fmt.Sprintf("%s %s", testAddr, edKeyStr) - db := testDB(t, str) - if err := db.check("", testAddr, ecKey); err == nil { - t.Fatalf("no error for unknown address") - } else if ke, ok := err.(*KeyError); !ok { - t.Fatalf("got type %T, want *KeyError", err) - } else if len(ke.Want) == 0 { - t.Fatalf("got empty KeyError.Want") - } -} - -func TestSameKeyType(t *testing.T) { - str := fmt.Sprintf("%s %s", testAddr, edKeyStr) - db := testDB(t, str) - if err := db.check("", testAddr, alternateEdKey); err == nil { - t.Fatalf("no error for unknown address") - } else if ke, ok := err.(*KeyError); !ok { - t.Fatalf("got type %T, want *KeyError", err) - } else if len(ke.Want) == 0 { - t.Fatalf("got empty KeyError.Want") - } else if got, want := ke.Want[0].Key.Marshal(), edKey.Marshal(); !bytes.Equal(got, want) { - t.Fatalf("got key %q, want %q", got, want) - } -} - -func TestIPAddress(t *testing.T) { - str := fmt.Sprintf("%s %s", testAddr, edKeyStr) - db := testDB(t, str) - if err := db.check("", testAddr, edKey); err != nil { - t.Errorf("got error %q, want none", err) - } -} - -func TestIPv6Address(t *testing.T) { - str := fmt.Sprintf("%s %s", testAddr6, edKeyStr) - db := testDB(t, str) - - if err := db.check("", testAddr6, edKey); err != nil { - t.Errorf("got error %q, want none", err) - } -} - -func TestBasic(t *testing.T) { - str := fmt.Sprintf("#comment\n\nserver.org,%s %s\notherhost %s", testAddr, edKeyStr, ecKeyStr) - db := testDB(t, str) - if err := db.check("server.org:22", testAddr, edKey); err != nil { - t.Errorf("got error %q, want none", err) - } - - want := KnownKey{ - Key: edKey, - Filename: "testdb", - Line: 3, - } - if err := db.check("server.org:22", testAddr, ecKey); err == nil { - t.Errorf("succeeded, want KeyError") - } else if ke, ok := err.(*KeyError); !ok { - t.Errorf("got %T, want *KeyError", err) - } else if len(ke.Want) != 1 { - t.Errorf("got %v, want 1 entry", ke) - } else if !reflect.DeepEqual(ke.Want[0], want) { - t.Errorf("got %v, want %v", ke.Want[0], want) - } -} - -func TestNegate(t *testing.T) { - str := fmt.Sprintf("%s,!server.org %s", testAddr, edKeyStr) - db := testDB(t, str) - if err := db.check("server.org:22", testAddr, ecKey); err == nil { - t.Errorf("succeeded") - } else if ke, ok := err.(*KeyError); !ok { - t.Errorf("got error type %T, want *KeyError", err) - } else if len(ke.Want) != 0 { - t.Errorf("got expected keys %d (first of type %s), want []", len(ke.Want), ke.Want[0].Key.Type()) - } -} - -func TestWildcard(t *testing.T) { - str := fmt.Sprintf("server*.domain %s", edKeyStr) - db := testDB(t, str) - - want := &KeyError{ - Want: []KnownKey{{ - Filename: "testdb", - Line: 1, - Key: edKey, - }}, - } - - got := db.check("server.domain:22", &net.TCPAddr{}, ecKey) - if !reflect.DeepEqual(got, want) { - t.Errorf("got %s, want %s", got, want) - } -} - -func TestLine(t *testing.T) { - for in, want := range map[string]string{ - "server.org": "server.org " + edKeyStr, - "server.org:22": "server.org " + edKeyStr, - "server.org:23": "[server.org]:23 " + edKeyStr, - "[c629:1ec4:102:304:102:304:102:304]:22": "[c629:1ec4:102:304:102:304:102:304] " + edKeyStr, - "[c629:1ec4:102:304:102:304:102:304]:23": "[c629:1ec4:102:304:102:304:102:304]:23 " + edKeyStr, - } { - if got := Line([]string{in}, edKey); got != want { - t.Errorf("Line(%q) = %q, want %q", in, got, want) - } - } -} - -func TestWildcardMatch(t *testing.T) { - for _, c := range []struct { - pat, str string - want bool - }{ - {"a?b", "abb", true}, - {"ab", "abc", false}, - {"abc", "ab", false}, - {"a*b", "axxxb", true}, - {"a*b", "axbxb", true}, - {"a*b", "axbxbc", false}, - {"a*?", "axbxc", true}, - {"a*b*", "axxbxxxxxx", true}, - {"a*b*c", "axxbxxxxxxc", true}, - {"a*b*?", "axxbxxxxxxc", true}, - {"a*b*z", "axxbxxbxxxz", true}, - {"a*b*z", "axxbxxzxxxz", true}, - {"a*b*z", "axxbxxzxxx", false}, - } { - got := wildcardMatch([]byte(c.pat), []byte(c.str)) - if got != c.want { - t.Errorf("wildcardMatch(%q, %q) = %v, want %v", c.pat, c.str, got, c.want) - } - - } -} - -// TODO(hanwen): test coverage for certificates. - -const testHostname = "hostname" - -// generated with keygen -H -f -const encodedTestHostnameHash = "|1|IHXZvQMvTcZTUU29+2vXFgx8Frs=|UGccIWfRVDwilMBnA3WJoRAC75Y=" - -func TestHostHash(t *testing.T) { - testHostHash(t, testHostname, encodedTestHostnameHash) -} - -func TestHashList(t *testing.T) { - encoded := HashHostname(testHostname) - testHostHash(t, testHostname, encoded) -} - -func testHostHash(t *testing.T, hostname, encoded string) { - typ, salt, hash, err := decodeHash(encoded) - if err != nil { - t.Fatalf("decodeHash: %v", err) - } - - if got := encodeHash(typ, salt, hash); got != encoded { - t.Errorf("got encoding %s want %s", got, encoded) - } - - if typ != sha1HashType { - t.Fatalf("got hash type %q, want %q", typ, sha1HashType) - } - - got := hashHost(hostname, salt) - if !bytes.Equal(got, hash) { - t.Errorf("got hash %x want %x", got, hash) - } -} - -func TestNormalize(t *testing.T) { - for in, want := range map[string]string{ - "127.0.0.1:22": "127.0.0.1", - "[127.0.0.1]:22": "127.0.0.1", - "[127.0.0.1]:23": "[127.0.0.1]:23", - "127.0.0.1:23": "[127.0.0.1]:23", - "[a.b.c]:22": "a.b.c", - "[abcd:abcd:abcd:abcd]": "[abcd:abcd:abcd:abcd]", - "[abcd:abcd:abcd:abcd]:22": "[abcd:abcd:abcd:abcd]", - "[abcd:abcd:abcd:abcd]:23": "[abcd:abcd:abcd:abcd]:23", - } { - got := Normalize(in) - if got != want { - t.Errorf("Normalize(%q) = %q, want %q", in, got, want) - } - } -} - -func TestHashedHostkeyCheck(t *testing.T) { - str := fmt.Sprintf("%s %s", HashHostname(testHostname), edKeyStr) - db := testDB(t, str) - if err := db.check(testHostname+":22", testAddr, edKey); err != nil { - t.Errorf("check(%s): %v", testHostname, err) - } - want := &KeyError{ - Want: []KnownKey{{ - Filename: "testdb", - Line: 1, - Key: edKey, - }}, - } - if got := db.check(testHostname+":22", testAddr, alternateEdKey); !reflect.DeepEqual(got, want) { - t.Errorf("got error %v, want %v", got, want) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mac.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mac.go deleted file mode 100644 index c07a06285..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mac.go +++ /dev/null @@ -1,61 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -// Message authentication support - -import ( - "crypto/hmac" - "crypto/sha1" - "crypto/sha256" - "hash" -) - -type macMode struct { - keySize int - etm bool - new func(key []byte) hash.Hash -} - -// truncatingMAC wraps around a hash.Hash and truncates the output digest to -// a given size. -type truncatingMAC struct { - length int - hmac hash.Hash -} - -func (t truncatingMAC) Write(data []byte) (int, error) { - return t.hmac.Write(data) -} - -func (t truncatingMAC) Sum(in []byte) []byte { - out := t.hmac.Sum(in) - return out[:len(in)+t.length] -} - -func (t truncatingMAC) Reset() { - t.hmac.Reset() -} - -func (t truncatingMAC) Size() int { - return t.length -} - -func (t truncatingMAC) BlockSize() int { return t.hmac.BlockSize() } - -var macModes = map[string]*macMode{ - "hmac-sha2-256-etm@openssh.com": {32, true, func(key []byte) hash.Hash { - return hmac.New(sha256.New, key) - }}, - "hmac-sha2-256": {32, false, func(key []byte) hash.Hash { - return hmac.New(sha256.New, key) - }}, - "hmac-sha1": {20, false, func(key []byte) hash.Hash { - return hmac.New(sha1.New, key) - }}, - "hmac-sha1-96": {20, false, func(key []byte) hash.Hash { - return truncatingMAC{12, hmac.New(sha1.New, key)} - }}, -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mempipe_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mempipe_test.go deleted file mode 100644 index 8697cd614..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mempipe_test.go +++ /dev/null @@ -1,110 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "io" - "sync" - "testing" -) - -// An in-memory packetConn. It is safe to call Close and writePacket -// from different goroutines. -type memTransport struct { - eof bool - pending [][]byte - write *memTransport - sync.Mutex - *sync.Cond -} - -func (t *memTransport) readPacket() ([]byte, error) { - t.Lock() - defer t.Unlock() - for { - if len(t.pending) > 0 { - r := t.pending[0] - t.pending = t.pending[1:] - return r, nil - } - if t.eof { - return nil, io.EOF - } - t.Cond.Wait() - } -} - -func (t *memTransport) closeSelf() error { - t.Lock() - defer t.Unlock() - if t.eof { - return io.EOF - } - t.eof = true - t.Cond.Broadcast() - return nil -} - -func (t *memTransport) Close() error { - err := t.write.closeSelf() - t.closeSelf() - return err -} - -func (t *memTransport) writePacket(p []byte) error { - t.write.Lock() - defer t.write.Unlock() - if t.write.eof { - return io.EOF - } - c := make([]byte, len(p)) - copy(c, p) - t.write.pending = append(t.write.pending, c) - t.write.Cond.Signal() - return nil -} - -func memPipe() (a, b packetConn) { - t1 := memTransport{} - t2 := memTransport{} - t1.write = &t2 - t2.write = &t1 - t1.Cond = sync.NewCond(&t1.Mutex) - t2.Cond = sync.NewCond(&t2.Mutex) - return &t1, &t2 -} - -func TestMemPipe(t *testing.T) { - a, b := memPipe() - if err := a.writePacket([]byte{42}); err != nil { - t.Fatalf("writePacket: %v", err) - } - if err := a.Close(); err != nil { - t.Fatal("Close: ", err) - } - p, err := b.readPacket() - if err != nil { - t.Fatal("readPacket: ", err) - } - if len(p) != 1 || p[0] != 42 { - t.Fatalf("got %v, want {42}", p) - } - p, err = b.readPacket() - if err != io.EOF { - t.Fatalf("got %v, %v, want EOF", p, err) - } -} - -func TestDoubleClose(t *testing.T) { - a, _ := memPipe() - err := a.Close() - if err != nil { - t.Errorf("Close: %v", err) - } - err = a.Close() - if err != io.EOF { - t.Errorf("expect EOF on double close.") - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/messages.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/messages.go deleted file mode 100644 index c96e1bec5..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/messages.go +++ /dev/null @@ -1,766 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "encoding/binary" - "errors" - "fmt" - "io" - "math/big" - "reflect" - "strconv" - "strings" -) - -// These are SSH message type numbers. They are scattered around several -// documents but many were taken from [SSH-PARAMETERS]. -const ( - msgIgnore = 2 - msgUnimplemented = 3 - msgDebug = 4 - msgNewKeys = 21 -) - -// SSH messages: -// -// These structures mirror the wire format of the corresponding SSH messages. -// They are marshaled using reflection with the marshal and unmarshal functions -// in this file. The only wrinkle is that a final member of type []byte with a -// ssh tag of "rest" receives the remainder of a packet when unmarshaling. - -// See RFC 4253, section 11.1. -const msgDisconnect = 1 - -// disconnectMsg is the message that signals a disconnect. It is also -// the error type returned from mux.Wait() -type disconnectMsg struct { - Reason uint32 `sshtype:"1"` - Message string - Language string -} - -func (d *disconnectMsg) Error() string { - return fmt.Sprintf("ssh: disconnect, reason %d: %s", d.Reason, d.Message) -} - -// See RFC 4253, section 7.1. -const msgKexInit = 20 - -type kexInitMsg struct { - Cookie [16]byte `sshtype:"20"` - KexAlgos []string - ServerHostKeyAlgos []string - CiphersClientServer []string - CiphersServerClient []string - MACsClientServer []string - MACsServerClient []string - CompressionClientServer []string - CompressionServerClient []string - LanguagesClientServer []string - LanguagesServerClient []string - FirstKexFollows bool - Reserved uint32 -} - -// See RFC 4253, section 8. - -// Diffie-Helman -const msgKexDHInit = 30 - -type kexDHInitMsg struct { - X *big.Int `sshtype:"30"` -} - -const msgKexECDHInit = 30 - -type kexECDHInitMsg struct { - ClientPubKey []byte `sshtype:"30"` -} - -const msgKexECDHReply = 31 - -type kexECDHReplyMsg struct { - HostKey []byte `sshtype:"31"` - EphemeralPubKey []byte - Signature []byte -} - -const msgKexDHReply = 31 - -type kexDHReplyMsg struct { - HostKey []byte `sshtype:"31"` - Y *big.Int - Signature []byte -} - -// See RFC 4253, section 10. -const msgServiceRequest = 5 - -type serviceRequestMsg struct { - Service string `sshtype:"5"` -} - -// See RFC 4253, section 10. -const msgServiceAccept = 6 - -type serviceAcceptMsg struct { - Service string `sshtype:"6"` -} - -// See RFC 4252, section 5. -const msgUserAuthRequest = 50 - -type userAuthRequestMsg struct { - User string `sshtype:"50"` - Service string - Method string - Payload []byte `ssh:"rest"` -} - -// Used for debug printouts of packets. -type userAuthSuccessMsg struct { -} - -// See RFC 4252, section 5.1 -const msgUserAuthFailure = 51 - -type userAuthFailureMsg struct { - Methods []string `sshtype:"51"` - PartialSuccess bool -} - -// See RFC 4252, section 5.1 -const msgUserAuthSuccess = 52 - -// See RFC 4252, section 5.4 -const msgUserAuthBanner = 53 - -type userAuthBannerMsg struct { - Message string `sshtype:"53"` - // unused, but required to allow message parsing - Language string -} - -// See RFC 4256, section 3.2 -const msgUserAuthInfoRequest = 60 -const msgUserAuthInfoResponse = 61 - -type userAuthInfoRequestMsg struct { - User string `sshtype:"60"` - Instruction string - DeprecatedLanguage string - NumPrompts uint32 - Prompts []byte `ssh:"rest"` -} - -// See RFC 4254, section 5.1. -const msgChannelOpen = 90 - -type channelOpenMsg struct { - ChanType string `sshtype:"90"` - PeersId uint32 - PeersWindow uint32 - MaxPacketSize uint32 - TypeSpecificData []byte `ssh:"rest"` -} - -const msgChannelExtendedData = 95 -const msgChannelData = 94 - -// Used for debug print outs of packets. -type channelDataMsg struct { - PeersId uint32 `sshtype:"94"` - Length uint32 - Rest []byte `ssh:"rest"` -} - -// See RFC 4254, section 5.1. -const msgChannelOpenConfirm = 91 - -type channelOpenConfirmMsg struct { - PeersId uint32 `sshtype:"91"` - MyId uint32 - MyWindow uint32 - MaxPacketSize uint32 - TypeSpecificData []byte `ssh:"rest"` -} - -// See RFC 4254, section 5.1. -const msgChannelOpenFailure = 92 - -type channelOpenFailureMsg struct { - PeersId uint32 `sshtype:"92"` - Reason RejectionReason - Message string - Language string -} - -const msgChannelRequest = 98 - -type channelRequestMsg struct { - PeersId uint32 `sshtype:"98"` - Request string - WantReply bool - RequestSpecificData []byte `ssh:"rest"` -} - -// See RFC 4254, section 5.4. -const msgChannelSuccess = 99 - -type channelRequestSuccessMsg struct { - PeersId uint32 `sshtype:"99"` -} - -// See RFC 4254, section 5.4. -const msgChannelFailure = 100 - -type channelRequestFailureMsg struct { - PeersId uint32 `sshtype:"100"` -} - -// See RFC 4254, section 5.3 -const msgChannelClose = 97 - -type channelCloseMsg struct { - PeersId uint32 `sshtype:"97"` -} - -// See RFC 4254, section 5.3 -const msgChannelEOF = 96 - -type channelEOFMsg struct { - PeersId uint32 `sshtype:"96"` -} - -// See RFC 4254, section 4 -const msgGlobalRequest = 80 - -type globalRequestMsg struct { - Type string `sshtype:"80"` - WantReply bool - Data []byte `ssh:"rest"` -} - -// See RFC 4254, section 4 -const msgRequestSuccess = 81 - -type globalRequestSuccessMsg struct { - Data []byte `ssh:"rest" sshtype:"81"` -} - -// See RFC 4254, section 4 -const msgRequestFailure = 82 - -type globalRequestFailureMsg struct { - Data []byte `ssh:"rest" sshtype:"82"` -} - -// See RFC 4254, section 5.2 -const msgChannelWindowAdjust = 93 - -type windowAdjustMsg struct { - PeersId uint32 `sshtype:"93"` - AdditionalBytes uint32 -} - -// See RFC 4252, section 7 -const msgUserAuthPubKeyOk = 60 - -type userAuthPubKeyOkMsg struct { - Algo string `sshtype:"60"` - PubKey []byte -} - -// typeTags returns the possible type bytes for the given reflect.Type, which -// should be a struct. The possible values are separated by a '|' character. -func typeTags(structType reflect.Type) (tags []byte) { - tagStr := structType.Field(0).Tag.Get("sshtype") - - for _, tag := range strings.Split(tagStr, "|") { - i, err := strconv.Atoi(tag) - if err == nil { - tags = append(tags, byte(i)) - } - } - - return tags -} - -func fieldError(t reflect.Type, field int, problem string) error { - if problem != "" { - problem = ": " + problem - } - return fmt.Errorf("ssh: unmarshal error for field %s of type %s%s", t.Field(field).Name, t.Name(), problem) -} - -var errShortRead = errors.New("ssh: short read") - -// Unmarshal parses data in SSH wire format into a structure. The out -// argument should be a pointer to struct. If the first member of the -// struct has the "sshtype" tag set to a '|'-separated set of numbers -// in decimal, the packet must start with one of those numbers. In -// case of error, Unmarshal returns a ParseError or -// UnexpectedMessageError. -func Unmarshal(data []byte, out interface{}) error { - v := reflect.ValueOf(out).Elem() - structType := v.Type() - expectedTypes := typeTags(structType) - - var expectedType byte - if len(expectedTypes) > 0 { - expectedType = expectedTypes[0] - } - - if len(data) == 0 { - return parseError(expectedType) - } - - if len(expectedTypes) > 0 { - goodType := false - for _, e := range expectedTypes { - if e > 0 && data[0] == e { - goodType = true - break - } - } - if !goodType { - return fmt.Errorf("ssh: unexpected message type %d (expected one of %v)", data[0], expectedTypes) - } - data = data[1:] - } - - var ok bool - for i := 0; i < v.NumField(); i++ { - field := v.Field(i) - t := field.Type() - switch t.Kind() { - case reflect.Bool: - if len(data) < 1 { - return errShortRead - } - field.SetBool(data[0] != 0) - data = data[1:] - case reflect.Array: - if t.Elem().Kind() != reflect.Uint8 { - return fieldError(structType, i, "array of unsupported type") - } - if len(data) < t.Len() { - return errShortRead - } - for j, n := 0, t.Len(); j < n; j++ { - field.Index(j).Set(reflect.ValueOf(data[j])) - } - data = data[t.Len():] - case reflect.Uint64: - var u64 uint64 - if u64, data, ok = parseUint64(data); !ok { - return errShortRead - } - field.SetUint(u64) - case reflect.Uint32: - var u32 uint32 - if u32, data, ok = parseUint32(data); !ok { - return errShortRead - } - field.SetUint(uint64(u32)) - case reflect.Uint8: - if len(data) < 1 { - return errShortRead - } - field.SetUint(uint64(data[0])) - data = data[1:] - case reflect.String: - var s []byte - if s, data, ok = parseString(data); !ok { - return fieldError(structType, i, "") - } - field.SetString(string(s)) - case reflect.Slice: - switch t.Elem().Kind() { - case reflect.Uint8: - if structType.Field(i).Tag.Get("ssh") == "rest" { - field.Set(reflect.ValueOf(data)) - data = nil - } else { - var s []byte - if s, data, ok = parseString(data); !ok { - return errShortRead - } - field.Set(reflect.ValueOf(s)) - } - case reflect.String: - var nl []string - if nl, data, ok = parseNameList(data); !ok { - return errShortRead - } - field.Set(reflect.ValueOf(nl)) - default: - return fieldError(structType, i, "slice of unsupported type") - } - case reflect.Ptr: - if t == bigIntType { - var n *big.Int - if n, data, ok = parseInt(data); !ok { - return errShortRead - } - field.Set(reflect.ValueOf(n)) - } else { - return fieldError(structType, i, "pointer to unsupported type") - } - default: - return fieldError(structType, i, fmt.Sprintf("unsupported type: %v", t)) - } - } - - if len(data) != 0 { - return parseError(expectedType) - } - - return nil -} - -// Marshal serializes the message in msg to SSH wire format. The msg -// argument should be a struct or pointer to struct. If the first -// member has the "sshtype" tag set to a number in decimal, that -// number is prepended to the result. If the last of member has the -// "ssh" tag set to "rest", its contents are appended to the output. -func Marshal(msg interface{}) []byte { - out := make([]byte, 0, 64) - return marshalStruct(out, msg) -} - -func marshalStruct(out []byte, msg interface{}) []byte { - v := reflect.Indirect(reflect.ValueOf(msg)) - msgTypes := typeTags(v.Type()) - if len(msgTypes) > 0 { - out = append(out, msgTypes[0]) - } - - for i, n := 0, v.NumField(); i < n; i++ { - field := v.Field(i) - switch t := field.Type(); t.Kind() { - case reflect.Bool: - var v uint8 - if field.Bool() { - v = 1 - } - out = append(out, v) - case reflect.Array: - if t.Elem().Kind() != reflect.Uint8 { - panic(fmt.Sprintf("array of non-uint8 in field %d: %T", i, field.Interface())) - } - for j, l := 0, t.Len(); j < l; j++ { - out = append(out, uint8(field.Index(j).Uint())) - } - case reflect.Uint32: - out = appendU32(out, uint32(field.Uint())) - case reflect.Uint64: - out = appendU64(out, uint64(field.Uint())) - case reflect.Uint8: - out = append(out, uint8(field.Uint())) - case reflect.String: - s := field.String() - out = appendInt(out, len(s)) - out = append(out, s...) - case reflect.Slice: - switch t.Elem().Kind() { - case reflect.Uint8: - if v.Type().Field(i).Tag.Get("ssh") != "rest" { - out = appendInt(out, field.Len()) - } - out = append(out, field.Bytes()...) - case reflect.String: - offset := len(out) - out = appendU32(out, 0) - if n := field.Len(); n > 0 { - for j := 0; j < n; j++ { - f := field.Index(j) - if j != 0 { - out = append(out, ',') - } - out = append(out, f.String()...) - } - // overwrite length value - binary.BigEndian.PutUint32(out[offset:], uint32(len(out)-offset-4)) - } - default: - panic(fmt.Sprintf("slice of unknown type in field %d: %T", i, field.Interface())) - } - case reflect.Ptr: - if t == bigIntType { - var n *big.Int - nValue := reflect.ValueOf(&n) - nValue.Elem().Set(field) - needed := intLength(n) - oldLength := len(out) - - if cap(out)-len(out) < needed { - newOut := make([]byte, len(out), 2*(len(out)+needed)) - copy(newOut, out) - out = newOut - } - out = out[:oldLength+needed] - marshalInt(out[oldLength:], n) - } else { - panic(fmt.Sprintf("pointer to unknown type in field %d: %T", i, field.Interface())) - } - } - } - - return out -} - -var bigOne = big.NewInt(1) - -func parseString(in []byte) (out, rest []byte, ok bool) { - if len(in) < 4 { - return - } - length := binary.BigEndian.Uint32(in) - in = in[4:] - if uint32(len(in)) < length { - return - } - out = in[:length] - rest = in[length:] - ok = true - return -} - -var ( - comma = []byte{','} - emptyNameList = []string{} -) - -func parseNameList(in []byte) (out []string, rest []byte, ok bool) { - contents, rest, ok := parseString(in) - if !ok { - return - } - if len(contents) == 0 { - out = emptyNameList - return - } - parts := bytes.Split(contents, comma) - out = make([]string, len(parts)) - for i, part := range parts { - out[i] = string(part) - } - return -} - -func parseInt(in []byte) (out *big.Int, rest []byte, ok bool) { - contents, rest, ok := parseString(in) - if !ok { - return - } - out = new(big.Int) - - if len(contents) > 0 && contents[0]&0x80 == 0x80 { - // This is a negative number - notBytes := make([]byte, len(contents)) - for i := range notBytes { - notBytes[i] = ^contents[i] - } - out.SetBytes(notBytes) - out.Add(out, bigOne) - out.Neg(out) - } else { - // Positive number - out.SetBytes(contents) - } - ok = true - return -} - -func parseUint32(in []byte) (uint32, []byte, bool) { - if len(in) < 4 { - return 0, nil, false - } - return binary.BigEndian.Uint32(in), in[4:], true -} - -func parseUint64(in []byte) (uint64, []byte, bool) { - if len(in) < 8 { - return 0, nil, false - } - return binary.BigEndian.Uint64(in), in[8:], true -} - -func intLength(n *big.Int) int { - length := 4 /* length bytes */ - if n.Sign() < 0 { - nMinus1 := new(big.Int).Neg(n) - nMinus1.Sub(nMinus1, bigOne) - bitLen := nMinus1.BitLen() - if bitLen%8 == 0 { - // The number will need 0xff padding - length++ - } - length += (bitLen + 7) / 8 - } else if n.Sign() == 0 { - // A zero is the zero length string - } else { - bitLen := n.BitLen() - if bitLen%8 == 0 { - // The number will need 0x00 padding - length++ - } - length += (bitLen + 7) / 8 - } - - return length -} - -func marshalUint32(to []byte, n uint32) []byte { - binary.BigEndian.PutUint32(to, n) - return to[4:] -} - -func marshalUint64(to []byte, n uint64) []byte { - binary.BigEndian.PutUint64(to, n) - return to[8:] -} - -func marshalInt(to []byte, n *big.Int) []byte { - lengthBytes := to - to = to[4:] - length := 0 - - if n.Sign() < 0 { - // A negative number has to be converted to two's-complement - // form. So we'll subtract 1 and invert. If the - // most-significant-bit isn't set then we'll need to pad the - // beginning with 0xff in order to keep the number negative. - nMinus1 := new(big.Int).Neg(n) - nMinus1.Sub(nMinus1, bigOne) - bytes := nMinus1.Bytes() - for i := range bytes { - bytes[i] ^= 0xff - } - if len(bytes) == 0 || bytes[0]&0x80 == 0 { - to[0] = 0xff - to = to[1:] - length++ - } - nBytes := copy(to, bytes) - to = to[nBytes:] - length += nBytes - } else if n.Sign() == 0 { - // A zero is the zero length string - } else { - bytes := n.Bytes() - if len(bytes) > 0 && bytes[0]&0x80 != 0 { - // We'll have to pad this with a 0x00 in order to - // stop it looking like a negative number. - to[0] = 0 - to = to[1:] - length++ - } - nBytes := copy(to, bytes) - to = to[nBytes:] - length += nBytes - } - - lengthBytes[0] = byte(length >> 24) - lengthBytes[1] = byte(length >> 16) - lengthBytes[2] = byte(length >> 8) - lengthBytes[3] = byte(length) - return to -} - -func writeInt(w io.Writer, n *big.Int) { - length := intLength(n) - buf := make([]byte, length) - marshalInt(buf, n) - w.Write(buf) -} - -func writeString(w io.Writer, s []byte) { - var lengthBytes [4]byte - lengthBytes[0] = byte(len(s) >> 24) - lengthBytes[1] = byte(len(s) >> 16) - lengthBytes[2] = byte(len(s) >> 8) - lengthBytes[3] = byte(len(s)) - w.Write(lengthBytes[:]) - w.Write(s) -} - -func stringLength(n int) int { - return 4 + n -} - -func marshalString(to []byte, s []byte) []byte { - to[0] = byte(len(s) >> 24) - to[1] = byte(len(s) >> 16) - to[2] = byte(len(s) >> 8) - to[3] = byte(len(s)) - to = to[4:] - copy(to, s) - return to[len(s):] -} - -var bigIntType = reflect.TypeOf((*big.Int)(nil)) - -// Decode a packet into its corresponding message. -func decode(packet []byte) (interface{}, error) { - var msg interface{} - switch packet[0] { - case msgDisconnect: - msg = new(disconnectMsg) - case msgServiceRequest: - msg = new(serviceRequestMsg) - case msgServiceAccept: - msg = new(serviceAcceptMsg) - case msgKexInit: - msg = new(kexInitMsg) - case msgKexDHInit: - msg = new(kexDHInitMsg) - case msgKexDHReply: - msg = new(kexDHReplyMsg) - case msgUserAuthRequest: - msg = new(userAuthRequestMsg) - case msgUserAuthSuccess: - return new(userAuthSuccessMsg), nil - case msgUserAuthFailure: - msg = new(userAuthFailureMsg) - case msgUserAuthPubKeyOk: - msg = new(userAuthPubKeyOkMsg) - case msgGlobalRequest: - msg = new(globalRequestMsg) - case msgRequestSuccess: - msg = new(globalRequestSuccessMsg) - case msgRequestFailure: - msg = new(globalRequestFailureMsg) - case msgChannelOpen: - msg = new(channelOpenMsg) - case msgChannelData: - msg = new(channelDataMsg) - case msgChannelOpenConfirm: - msg = new(channelOpenConfirmMsg) - case msgChannelOpenFailure: - msg = new(channelOpenFailureMsg) - case msgChannelWindowAdjust: - msg = new(windowAdjustMsg) - case msgChannelEOF: - msg = new(channelEOFMsg) - case msgChannelClose: - msg = new(channelCloseMsg) - case msgChannelRequest: - msg = new(channelRequestMsg) - case msgChannelSuccess: - msg = new(channelRequestSuccessMsg) - case msgChannelFailure: - msg = new(channelRequestFailureMsg) - default: - return nil, unexpectedMessageError(0, packet[0]) - } - if err := Unmarshal(packet, msg); err != nil { - return nil, err - } - return msg, nil -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/messages_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/messages_test.go deleted file mode 100644 index e79076412..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/messages_test.go +++ /dev/null @@ -1,288 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "math/big" - "math/rand" - "reflect" - "testing" - "testing/quick" -) - -var intLengthTests = []struct { - val, length int -}{ - {0, 4 + 0}, - {1, 4 + 1}, - {127, 4 + 1}, - {128, 4 + 2}, - {-1, 4 + 1}, -} - -func TestIntLength(t *testing.T) { - for _, test := range intLengthTests { - v := new(big.Int).SetInt64(int64(test.val)) - length := intLength(v) - if length != test.length { - t.Errorf("For %d, got length %d but expected %d", test.val, length, test.length) - } - } -} - -type msgAllTypes struct { - Bool bool `sshtype:"21"` - Array [16]byte - Uint64 uint64 - Uint32 uint32 - Uint8 uint8 - String string - Strings []string - Bytes []byte - Int *big.Int - Rest []byte `ssh:"rest"` -} - -func (t *msgAllTypes) Generate(rand *rand.Rand, size int) reflect.Value { - m := &msgAllTypes{} - m.Bool = rand.Intn(2) == 1 - randomBytes(m.Array[:], rand) - m.Uint64 = uint64(rand.Int63n(1<<63 - 1)) - m.Uint32 = uint32(rand.Intn((1 << 31) - 1)) - m.Uint8 = uint8(rand.Intn(1 << 8)) - m.String = string(m.Array[:]) - m.Strings = randomNameList(rand) - m.Bytes = m.Array[:] - m.Int = randomInt(rand) - m.Rest = m.Array[:] - return reflect.ValueOf(m) -} - -func TestMarshalUnmarshal(t *testing.T) { - rand := rand.New(rand.NewSource(0)) - iface := &msgAllTypes{} - ty := reflect.ValueOf(iface).Type() - - n := 100 - if testing.Short() { - n = 5 - } - for j := 0; j < n; j++ { - v, ok := quick.Value(ty, rand) - if !ok { - t.Errorf("failed to create value") - break - } - - m1 := v.Elem().Interface() - m2 := iface - - marshaled := Marshal(m1) - if err := Unmarshal(marshaled, m2); err != nil { - t.Errorf("Unmarshal %#v: %s", m1, err) - break - } - - if !reflect.DeepEqual(v.Interface(), m2) { - t.Errorf("got: %#v\nwant:%#v\n%x", m2, m1, marshaled) - break - } - } -} - -func TestUnmarshalEmptyPacket(t *testing.T) { - var b []byte - var m channelRequestSuccessMsg - if err := Unmarshal(b, &m); err == nil { - t.Fatalf("unmarshal of empty slice succeeded") - } -} - -func TestUnmarshalUnexpectedPacket(t *testing.T) { - type S struct { - I uint32 `sshtype:"43"` - S string - B bool - } - - s := S{11, "hello", true} - packet := Marshal(s) - packet[0] = 42 - roundtrip := S{} - err := Unmarshal(packet, &roundtrip) - if err == nil { - t.Fatal("expected error, not nil") - } -} - -func TestMarshalPtr(t *testing.T) { - s := struct { - S string - }{"hello"} - - m1 := Marshal(s) - m2 := Marshal(&s) - if !bytes.Equal(m1, m2) { - t.Errorf("got %q, want %q for marshaled pointer", m2, m1) - } -} - -func TestBareMarshalUnmarshal(t *testing.T) { - type S struct { - I uint32 - S string - B bool - } - - s := S{42, "hello", true} - packet := Marshal(s) - roundtrip := S{} - Unmarshal(packet, &roundtrip) - - if !reflect.DeepEqual(s, roundtrip) { - t.Errorf("got %#v, want %#v", roundtrip, s) - } -} - -func TestBareMarshal(t *testing.T) { - type S2 struct { - I uint32 - } - s := S2{42} - packet := Marshal(s) - i, rest, ok := parseUint32(packet) - if len(rest) > 0 || !ok { - t.Errorf("parseInt(%q): parse error", packet) - } - if i != s.I { - t.Errorf("got %d, want %d", i, s.I) - } -} - -func TestUnmarshalShortKexInitPacket(t *testing.T) { - // This used to panic. - // Issue 11348 - packet := []byte{0x14, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0xff, 0xff, 0xff, 0xff} - kim := &kexInitMsg{} - if err := Unmarshal(packet, kim); err == nil { - t.Error("truncated packet unmarshaled without error") - } -} - -func TestMarshalMultiTag(t *testing.T) { - var res struct { - A uint32 `sshtype:"1|2"` - } - - good1 := struct { - A uint32 `sshtype:"1"` - }{ - 1, - } - good2 := struct { - A uint32 `sshtype:"2"` - }{ - 1, - } - - if e := Unmarshal(Marshal(good1), &res); e != nil { - t.Errorf("error unmarshaling multipart tag: %v", e) - } - - if e := Unmarshal(Marshal(good2), &res); e != nil { - t.Errorf("error unmarshaling multipart tag: %v", e) - } - - bad1 := struct { - A uint32 `sshtype:"3"` - }{ - 1, - } - if e := Unmarshal(Marshal(bad1), &res); e == nil { - t.Errorf("bad struct unmarshaled without error") - } -} - -func randomBytes(out []byte, rand *rand.Rand) { - for i := 0; i < len(out); i++ { - out[i] = byte(rand.Int31()) - } -} - -func randomNameList(rand *rand.Rand) []string { - ret := make([]string, rand.Int31()&15) - for i := range ret { - s := make([]byte, 1+(rand.Int31()&15)) - for j := range s { - s[j] = 'a' + uint8(rand.Int31()&15) - } - ret[i] = string(s) - } - return ret -} - -func randomInt(rand *rand.Rand) *big.Int { - return new(big.Int).SetInt64(int64(int32(rand.Uint32()))) -} - -func (*kexInitMsg) Generate(rand *rand.Rand, size int) reflect.Value { - ki := &kexInitMsg{} - randomBytes(ki.Cookie[:], rand) - ki.KexAlgos = randomNameList(rand) - ki.ServerHostKeyAlgos = randomNameList(rand) - ki.CiphersClientServer = randomNameList(rand) - ki.CiphersServerClient = randomNameList(rand) - ki.MACsClientServer = randomNameList(rand) - ki.MACsServerClient = randomNameList(rand) - ki.CompressionClientServer = randomNameList(rand) - ki.CompressionServerClient = randomNameList(rand) - ki.LanguagesClientServer = randomNameList(rand) - ki.LanguagesServerClient = randomNameList(rand) - if rand.Int31()&1 == 1 { - ki.FirstKexFollows = true - } - return reflect.ValueOf(ki) -} - -func (*kexDHInitMsg) Generate(rand *rand.Rand, size int) reflect.Value { - dhi := &kexDHInitMsg{} - dhi.X = randomInt(rand) - return reflect.ValueOf(dhi) -} - -var ( - _kexInitMsg = new(kexInitMsg).Generate(rand.New(rand.NewSource(0)), 10).Elem().Interface() - _kexDHInitMsg = new(kexDHInitMsg).Generate(rand.New(rand.NewSource(0)), 10).Elem().Interface() - - _kexInit = Marshal(_kexInitMsg) - _kexDHInit = Marshal(_kexDHInitMsg) -) - -func BenchmarkMarshalKexInitMsg(b *testing.B) { - for i := 0; i < b.N; i++ { - Marshal(_kexInitMsg) - } -} - -func BenchmarkUnmarshalKexInitMsg(b *testing.B) { - m := new(kexInitMsg) - for i := 0; i < b.N; i++ { - Unmarshal(_kexInit, m) - } -} - -func BenchmarkMarshalKexDHInitMsg(b *testing.B) { - for i := 0; i < b.N; i++ { - Marshal(_kexDHInitMsg) - } -} - -func BenchmarkUnmarshalKexDHInitMsg(b *testing.B) { - m := new(kexDHInitMsg) - for i := 0; i < b.N; i++ { - Unmarshal(_kexDHInit, m) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mux.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mux.go deleted file mode 100644 index 27a527c10..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mux.go +++ /dev/null @@ -1,330 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "encoding/binary" - "fmt" - "io" - "log" - "sync" - "sync/atomic" -) - -// debugMux, if set, causes messages in the connection protocol to be -// logged. -const debugMux = false - -// chanList is a thread safe channel list. -type chanList struct { - // protects concurrent access to chans - sync.Mutex - - // chans are indexed by the local id of the channel, which the - // other side should send in the PeersId field. - chans []*channel - - // This is a debugging aid: it offsets all IDs by this - // amount. This helps distinguish otherwise identical - // server/client muxes - offset uint32 -} - -// Assigns a channel ID to the given channel. -func (c *chanList) add(ch *channel) uint32 { - c.Lock() - defer c.Unlock() - for i := range c.chans { - if c.chans[i] == nil { - c.chans[i] = ch - return uint32(i) + c.offset - } - } - c.chans = append(c.chans, ch) - return uint32(len(c.chans)-1) + c.offset -} - -// getChan returns the channel for the given ID. -func (c *chanList) getChan(id uint32) *channel { - id -= c.offset - - c.Lock() - defer c.Unlock() - if id < uint32(len(c.chans)) { - return c.chans[id] - } - return nil -} - -func (c *chanList) remove(id uint32) { - id -= c.offset - c.Lock() - if id < uint32(len(c.chans)) { - c.chans[id] = nil - } - c.Unlock() -} - -// dropAll forgets all channels it knows, returning them in a slice. -func (c *chanList) dropAll() []*channel { - c.Lock() - defer c.Unlock() - var r []*channel - - for _, ch := range c.chans { - if ch == nil { - continue - } - r = append(r, ch) - } - c.chans = nil - return r -} - -// mux represents the state for the SSH connection protocol, which -// multiplexes many channels onto a single packet transport. -type mux struct { - conn packetConn - chanList chanList - - incomingChannels chan NewChannel - - globalSentMu sync.Mutex - globalResponses chan interface{} - incomingRequests chan *Request - - errCond *sync.Cond - err error -} - -// When debugging, each new chanList instantiation has a different -// offset. -var globalOff uint32 - -func (m *mux) Wait() error { - m.errCond.L.Lock() - defer m.errCond.L.Unlock() - for m.err == nil { - m.errCond.Wait() - } - return m.err -} - -// newMux returns a mux that runs over the given connection. -func newMux(p packetConn) *mux { - m := &mux{ - conn: p, - incomingChannels: make(chan NewChannel, chanSize), - globalResponses: make(chan interface{}, 1), - incomingRequests: make(chan *Request, chanSize), - errCond: newCond(), - } - if debugMux { - m.chanList.offset = atomic.AddUint32(&globalOff, 1) - } - - go m.loop() - return m -} - -func (m *mux) sendMessage(msg interface{}) error { - p := Marshal(msg) - if debugMux { - log.Printf("send global(%d): %#v", m.chanList.offset, msg) - } - return m.conn.writePacket(p) -} - -func (m *mux) SendRequest(name string, wantReply bool, payload []byte) (bool, []byte, error) { - if wantReply { - m.globalSentMu.Lock() - defer m.globalSentMu.Unlock() - } - - if err := m.sendMessage(globalRequestMsg{ - Type: name, - WantReply: wantReply, - Data: payload, - }); err != nil { - return false, nil, err - } - - if !wantReply { - return false, nil, nil - } - - msg, ok := <-m.globalResponses - if !ok { - return false, nil, io.EOF - } - switch msg := msg.(type) { - case *globalRequestFailureMsg: - return false, msg.Data, nil - case *globalRequestSuccessMsg: - return true, msg.Data, nil - default: - return false, nil, fmt.Errorf("ssh: unexpected response to request: %#v", msg) - } -} - -// ackRequest must be called after processing a global request that -// has WantReply set. -func (m *mux) ackRequest(ok bool, data []byte) error { - if ok { - return m.sendMessage(globalRequestSuccessMsg{Data: data}) - } - return m.sendMessage(globalRequestFailureMsg{Data: data}) -} - -func (m *mux) Close() error { - return m.conn.Close() -} - -// loop runs the connection machine. It will process packets until an -// error is encountered. To synchronize on loop exit, use mux.Wait. -func (m *mux) loop() { - var err error - for err == nil { - err = m.onePacket() - } - - for _, ch := range m.chanList.dropAll() { - ch.close() - } - - close(m.incomingChannels) - close(m.incomingRequests) - close(m.globalResponses) - - m.conn.Close() - - m.errCond.L.Lock() - m.err = err - m.errCond.Broadcast() - m.errCond.L.Unlock() - - if debugMux { - log.Println("loop exit", err) - } -} - -// onePacket reads and processes one packet. -func (m *mux) onePacket() error { - packet, err := m.conn.readPacket() - if err != nil { - return err - } - - if debugMux { - if packet[0] == msgChannelData || packet[0] == msgChannelExtendedData { - log.Printf("decoding(%d): data packet - %d bytes", m.chanList.offset, len(packet)) - } else { - p, _ := decode(packet) - log.Printf("decoding(%d): %d %#v - %d bytes", m.chanList.offset, packet[0], p, len(packet)) - } - } - - switch packet[0] { - case msgChannelOpen: - return m.handleChannelOpen(packet) - case msgGlobalRequest, msgRequestSuccess, msgRequestFailure: - return m.handleGlobalPacket(packet) - } - - // assume a channel packet. - if len(packet) < 5 { - return parseError(packet[0]) - } - id := binary.BigEndian.Uint32(packet[1:]) - ch := m.chanList.getChan(id) - if ch == nil { - return fmt.Errorf("ssh: invalid channel %d", id) - } - - return ch.handlePacket(packet) -} - -func (m *mux) handleGlobalPacket(packet []byte) error { - msg, err := decode(packet) - if err != nil { - return err - } - - switch msg := msg.(type) { - case *globalRequestMsg: - m.incomingRequests <- &Request{ - Type: msg.Type, - WantReply: msg.WantReply, - Payload: msg.Data, - mux: m, - } - case *globalRequestSuccessMsg, *globalRequestFailureMsg: - m.globalResponses <- msg - default: - panic(fmt.Sprintf("not a global message %#v", msg)) - } - - return nil -} - -// handleChannelOpen schedules a channel to be Accept()ed. -func (m *mux) handleChannelOpen(packet []byte) error { - var msg channelOpenMsg - if err := Unmarshal(packet, &msg); err != nil { - return err - } - - if msg.MaxPacketSize < minPacketLength || msg.MaxPacketSize > 1<<31 { - failMsg := channelOpenFailureMsg{ - PeersId: msg.PeersId, - Reason: ConnectionFailed, - Message: "invalid request", - Language: "en_US.UTF-8", - } - return m.sendMessage(failMsg) - } - - c := m.newChannel(msg.ChanType, channelInbound, msg.TypeSpecificData) - c.remoteId = msg.PeersId - c.maxRemotePayload = msg.MaxPacketSize - c.remoteWin.add(msg.PeersWindow) - m.incomingChannels <- c - return nil -} - -func (m *mux) OpenChannel(chanType string, extra []byte) (Channel, <-chan *Request, error) { - ch, err := m.openChannel(chanType, extra) - if err != nil { - return nil, nil, err - } - - return ch, ch.incomingRequests, nil -} - -func (m *mux) openChannel(chanType string, extra []byte) (*channel, error) { - ch := m.newChannel(chanType, channelOutbound, extra) - - ch.maxIncomingPayload = channelMaxPacket - - open := channelOpenMsg{ - ChanType: chanType, - PeersWindow: ch.myWindow, - MaxPacketSize: ch.maxIncomingPayload, - TypeSpecificData: extra, - PeersId: ch.localId, - } - if err := m.sendMessage(open); err != nil { - return nil, err - } - - switch msg := (<-ch.msg).(type) { - case *channelOpenConfirmMsg: - return ch, nil - case *channelOpenFailureMsg: - return nil, &OpenChannelError{msg.Reason, msg.Message} - default: - return nil, fmt.Errorf("ssh: unexpected packet in response to channel open: %T", msg) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mux_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mux_test.go deleted file mode 100644 index 25d2181d6..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/mux_test.go +++ /dev/null @@ -1,505 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "io" - "io/ioutil" - "sync" - "testing" -) - -func muxPair() (*mux, *mux) { - a, b := memPipe() - - s := newMux(a) - c := newMux(b) - - return s, c -} - -// Returns both ends of a channel, and the mux for the the 2nd -// channel. -func channelPair(t *testing.T) (*channel, *channel, *mux) { - c, s := muxPair() - - res := make(chan *channel, 1) - go func() { - newCh, ok := <-s.incomingChannels - if !ok { - t.Fatalf("No incoming channel") - } - if newCh.ChannelType() != "chan" { - t.Fatalf("got type %q want chan", newCh.ChannelType()) - } - ch, _, err := newCh.Accept() - if err != nil { - t.Fatalf("Accept %v", err) - } - res <- ch.(*channel) - }() - - ch, err := c.openChannel("chan", nil) - if err != nil { - t.Fatalf("OpenChannel: %v", err) - } - - return <-res, ch, c -} - -// Test that stderr and stdout can be addressed from different -// goroutines. This is intended for use with the race detector. -func TestMuxChannelExtendedThreadSafety(t *testing.T) { - writer, reader, mux := channelPair(t) - defer writer.Close() - defer reader.Close() - defer mux.Close() - - var wr, rd sync.WaitGroup - magic := "hello world" - - wr.Add(2) - go func() { - io.WriteString(writer, magic) - wr.Done() - }() - go func() { - io.WriteString(writer.Stderr(), magic) - wr.Done() - }() - - rd.Add(2) - go func() { - c, err := ioutil.ReadAll(reader) - if string(c) != magic { - t.Fatalf("stdout read got %q, want %q (error %s)", c, magic, err) - } - rd.Done() - }() - go func() { - c, err := ioutil.ReadAll(reader.Stderr()) - if string(c) != magic { - t.Fatalf("stderr read got %q, want %q (error %s)", c, magic, err) - } - rd.Done() - }() - - wr.Wait() - writer.CloseWrite() - rd.Wait() -} - -func TestMuxReadWrite(t *testing.T) { - s, c, mux := channelPair(t) - defer s.Close() - defer c.Close() - defer mux.Close() - - magic := "hello world" - magicExt := "hello stderr" - go func() { - _, err := s.Write([]byte(magic)) - if err != nil { - t.Fatalf("Write: %v", err) - } - _, err = s.Extended(1).Write([]byte(magicExt)) - if err != nil { - t.Fatalf("Write: %v", err) - } - err = s.Close() - if err != nil { - t.Fatalf("Close: %v", err) - } - }() - - var buf [1024]byte - n, err := c.Read(buf[:]) - if err != nil { - t.Fatalf("server Read: %v", err) - } - got := string(buf[:n]) - if got != magic { - t.Fatalf("server: got %q want %q", got, magic) - } - - n, err = c.Extended(1).Read(buf[:]) - if err != nil { - t.Fatalf("server Read: %v", err) - } - - got = string(buf[:n]) - if got != magicExt { - t.Fatalf("server: got %q want %q", got, magic) - } -} - -func TestMuxChannelOverflow(t *testing.T) { - reader, writer, mux := channelPair(t) - defer reader.Close() - defer writer.Close() - defer mux.Close() - - wDone := make(chan int, 1) - go func() { - if _, err := writer.Write(make([]byte, channelWindowSize)); err != nil { - t.Errorf("could not fill window: %v", err) - } - writer.Write(make([]byte, 1)) - wDone <- 1 - }() - writer.remoteWin.waitWriterBlocked() - - // Send 1 byte. - packet := make([]byte, 1+4+4+1) - packet[0] = msgChannelData - marshalUint32(packet[1:], writer.remoteId) - marshalUint32(packet[5:], uint32(1)) - packet[9] = 42 - - if err := writer.mux.conn.writePacket(packet); err != nil { - t.Errorf("could not send packet") - } - if _, err := reader.SendRequest("hello", true, nil); err == nil { - t.Errorf("SendRequest succeeded.") - } - <-wDone -} - -func TestMuxChannelCloseWriteUnblock(t *testing.T) { - reader, writer, mux := channelPair(t) - defer reader.Close() - defer writer.Close() - defer mux.Close() - - wDone := make(chan int, 1) - go func() { - if _, err := writer.Write(make([]byte, channelWindowSize)); err != nil { - t.Errorf("could not fill window: %v", err) - } - if _, err := writer.Write(make([]byte, 1)); err != io.EOF { - t.Errorf("got %v, want EOF for unblock write", err) - } - wDone <- 1 - }() - - writer.remoteWin.waitWriterBlocked() - reader.Close() - <-wDone -} - -func TestMuxConnectionCloseWriteUnblock(t *testing.T) { - reader, writer, mux := channelPair(t) - defer reader.Close() - defer writer.Close() - defer mux.Close() - - wDone := make(chan int, 1) - go func() { - if _, err := writer.Write(make([]byte, channelWindowSize)); err != nil { - t.Errorf("could not fill window: %v", err) - } - if _, err := writer.Write(make([]byte, 1)); err != io.EOF { - t.Errorf("got %v, want EOF for unblock write", err) - } - wDone <- 1 - }() - - writer.remoteWin.waitWriterBlocked() - mux.Close() - <-wDone -} - -func TestMuxReject(t *testing.T) { - client, server := muxPair() - defer server.Close() - defer client.Close() - - go func() { - ch, ok := <-server.incomingChannels - if !ok { - t.Fatalf("Accept") - } - if ch.ChannelType() != "ch" || string(ch.ExtraData()) != "extra" { - t.Fatalf("unexpected channel: %q, %q", ch.ChannelType(), ch.ExtraData()) - } - ch.Reject(RejectionReason(42), "message") - }() - - ch, err := client.openChannel("ch", []byte("extra")) - if ch != nil { - t.Fatal("openChannel not rejected") - } - - ocf, ok := err.(*OpenChannelError) - if !ok { - t.Errorf("got %#v want *OpenChannelError", err) - } else if ocf.Reason != 42 || ocf.Message != "message" { - t.Errorf("got %#v, want {Reason: 42, Message: %q}", ocf, "message") - } - - want := "ssh: rejected: unknown reason 42 (message)" - if err.Error() != want { - t.Errorf("got %q, want %q", err.Error(), want) - } -} - -func TestMuxChannelRequest(t *testing.T) { - client, server, mux := channelPair(t) - defer server.Close() - defer client.Close() - defer mux.Close() - - var received int - var wg sync.WaitGroup - wg.Add(1) - go func() { - for r := range server.incomingRequests { - received++ - r.Reply(r.Type == "yes", nil) - } - wg.Done() - }() - _, err := client.SendRequest("yes", false, nil) - if err != nil { - t.Fatalf("SendRequest: %v", err) - } - ok, err := client.SendRequest("yes", true, nil) - if err != nil { - t.Fatalf("SendRequest: %v", err) - } - - if !ok { - t.Errorf("SendRequest(yes): %v", ok) - - } - - ok, err = client.SendRequest("no", true, nil) - if err != nil { - t.Fatalf("SendRequest: %v", err) - } - if ok { - t.Errorf("SendRequest(no): %v", ok) - - } - - client.Close() - wg.Wait() - - if received != 3 { - t.Errorf("got %d requests, want %d", received, 3) - } -} - -func TestMuxGlobalRequest(t *testing.T) { - clientMux, serverMux := muxPair() - defer serverMux.Close() - defer clientMux.Close() - - var seen bool - go func() { - for r := range serverMux.incomingRequests { - seen = seen || r.Type == "peek" - if r.WantReply { - err := r.Reply(r.Type == "yes", - append([]byte(r.Type), r.Payload...)) - if err != nil { - t.Errorf("AckRequest: %v", err) - } - } - } - }() - - _, _, err := clientMux.SendRequest("peek", false, nil) - if err != nil { - t.Errorf("SendRequest: %v", err) - } - - ok, data, err := clientMux.SendRequest("yes", true, []byte("a")) - if !ok || string(data) != "yesa" || err != nil { - t.Errorf("SendRequest(\"yes\", true, \"a\"): %v %v %v", - ok, data, err) - } - if ok, data, err := clientMux.SendRequest("yes", true, []byte("a")); !ok || string(data) != "yesa" || err != nil { - t.Errorf("SendRequest(\"yes\", true, \"a\"): %v %v %v", - ok, data, err) - } - - if ok, data, err := clientMux.SendRequest("no", true, []byte("a")); ok || string(data) != "noa" || err != nil { - t.Errorf("SendRequest(\"no\", true, \"a\"): %v %v %v", - ok, data, err) - } - - if !seen { - t.Errorf("never saw 'peek' request") - } -} - -func TestMuxGlobalRequestUnblock(t *testing.T) { - clientMux, serverMux := muxPair() - defer serverMux.Close() - defer clientMux.Close() - - result := make(chan error, 1) - go func() { - _, _, err := clientMux.SendRequest("hello", true, nil) - result <- err - }() - - <-serverMux.incomingRequests - serverMux.conn.Close() - err := <-result - - if err != io.EOF { - t.Errorf("want EOF, got %v", io.EOF) - } -} - -func TestMuxChannelRequestUnblock(t *testing.T) { - a, b, connB := channelPair(t) - defer a.Close() - defer b.Close() - defer connB.Close() - - result := make(chan error, 1) - go func() { - _, err := a.SendRequest("hello", true, nil) - result <- err - }() - - <-b.incomingRequests - connB.conn.Close() - err := <-result - - if err != io.EOF { - t.Errorf("want EOF, got %v", err) - } -} - -func TestMuxCloseChannel(t *testing.T) { - r, w, mux := channelPair(t) - defer mux.Close() - defer r.Close() - defer w.Close() - - result := make(chan error, 1) - go func() { - var b [1024]byte - _, err := r.Read(b[:]) - result <- err - }() - if err := w.Close(); err != nil { - t.Errorf("w.Close: %v", err) - } - - if _, err := w.Write([]byte("hello")); err != io.EOF { - t.Errorf("got err %v, want io.EOF after Close", err) - } - - if err := <-result; err != io.EOF { - t.Errorf("got %v (%T), want io.EOF", err, err) - } -} - -func TestMuxCloseWriteChannel(t *testing.T) { - r, w, mux := channelPair(t) - defer mux.Close() - - result := make(chan error, 1) - go func() { - var b [1024]byte - _, err := r.Read(b[:]) - result <- err - }() - if err := w.CloseWrite(); err != nil { - t.Errorf("w.CloseWrite: %v", err) - } - - if _, err := w.Write([]byte("hello")); err != io.EOF { - t.Errorf("got err %v, want io.EOF after CloseWrite", err) - } - - if err := <-result; err != io.EOF { - t.Errorf("got %v (%T), want io.EOF", err, err) - } -} - -func TestMuxInvalidRecord(t *testing.T) { - a, b := muxPair() - defer a.Close() - defer b.Close() - - packet := make([]byte, 1+4+4+1) - packet[0] = msgChannelData - marshalUint32(packet[1:], 29348723 /* invalid channel id */) - marshalUint32(packet[5:], 1) - packet[9] = 42 - - a.conn.writePacket(packet) - go a.SendRequest("hello", false, nil) - // 'a' wrote an invalid packet, so 'b' has exited. - req, ok := <-b.incomingRequests - if ok { - t.Errorf("got request %#v after receiving invalid packet", req) - } -} - -func TestZeroWindowAdjust(t *testing.T) { - a, b, mux := channelPair(t) - defer a.Close() - defer b.Close() - defer mux.Close() - - go func() { - io.WriteString(a, "hello") - // bogus adjust. - a.sendMessage(windowAdjustMsg{}) - io.WriteString(a, "world") - a.Close() - }() - - want := "helloworld" - c, _ := ioutil.ReadAll(b) - if string(c) != want { - t.Errorf("got %q want %q", c, want) - } -} - -func TestMuxMaxPacketSize(t *testing.T) { - a, b, mux := channelPair(t) - defer a.Close() - defer b.Close() - defer mux.Close() - - large := make([]byte, a.maxRemotePayload+1) - packet := make([]byte, 1+4+4+1+len(large)) - packet[0] = msgChannelData - marshalUint32(packet[1:], a.remoteId) - marshalUint32(packet[5:], uint32(len(large))) - packet[9] = 42 - - if err := a.mux.conn.writePacket(packet); err != nil { - t.Errorf("could not send packet") - } - - go a.SendRequest("hello", false, nil) - - _, ok := <-b.incomingRequests - if ok { - t.Errorf("connection still alive after receiving large packet.") - } -} - -// Don't ship code with debug=true. -func TestDebug(t *testing.T) { - if debugMux { - t.Error("mux debug switched on") - } - if debugHandshake { - t.Error("handshake debug switched on") - } - if debugTransport { - t.Error("transport debug switched on") - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/server.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/server.go deleted file mode 100644 index 148d2cb24..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/server.go +++ /dev/null @@ -1,580 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "errors" - "fmt" - "io" - "net" - "strings" -) - -// The Permissions type holds fine-grained permissions that are -// specific to a user or a specific authentication method for a user. -// The Permissions value for a successful authentication attempt is -// available in ServerConn, so it can be used to pass information from -// the user-authentication phase to the application layer. -type Permissions struct { - // CriticalOptions indicate restrictions to the default - // permissions, and are typically used in conjunction with - // user certificates. The standard for SSH certificates - // defines "force-command" (only allow the given command to - // execute) and "source-address" (only allow connections from - // the given address). The SSH package currently only enforces - // the "source-address" critical option. It is up to server - // implementations to enforce other critical options, such as - // "force-command", by checking them after the SSH handshake - // is successful. In general, SSH servers should reject - // connections that specify critical options that are unknown - // or not supported. - CriticalOptions map[string]string - - // Extensions are extra functionality that the server may - // offer on authenticated connections. Lack of support for an - // extension does not preclude authenticating a user. Common - // extensions are "permit-agent-forwarding", - // "permit-X11-forwarding". The Go SSH library currently does - // not act on any extension, and it is up to server - // implementations to honor them. Extensions can be used to - // pass data from the authentication callbacks to the server - // application layer. - Extensions map[string]string -} - -// ServerConfig holds server specific configuration data. -type ServerConfig struct { - // Config contains configuration shared between client and server. - Config - - hostKeys []Signer - - // NoClientAuth is true if clients are allowed to connect without - // authenticating. - NoClientAuth bool - - // MaxAuthTries specifies the maximum number of authentication attempts - // permitted per connection. If set to a negative number, the number of - // attempts are unlimited. If set to zero, the number of attempts are limited - // to 6. - MaxAuthTries int - - // PasswordCallback, if non-nil, is called when a user - // attempts to authenticate using a password. - PasswordCallback func(conn ConnMetadata, password []byte) (*Permissions, error) - - // PublicKeyCallback, if non-nil, is called when a client - // offers a public key for authentication. It must return a nil error - // if the given public key can be used to authenticate the - // given user. For example, see CertChecker.Authenticate. A - // call to this function does not guarantee that the key - // offered is in fact used to authenticate. To record any data - // depending on the public key, store it inside a - // Permissions.Extensions entry. - PublicKeyCallback func(conn ConnMetadata, key PublicKey) (*Permissions, error) - - // KeyboardInteractiveCallback, if non-nil, is called when - // keyboard-interactive authentication is selected (RFC - // 4256). The client object's Challenge function should be - // used to query the user. The callback may offer multiple - // Challenge rounds. To avoid information leaks, the client - // should be presented a challenge even if the user is - // unknown. - KeyboardInteractiveCallback func(conn ConnMetadata, client KeyboardInteractiveChallenge) (*Permissions, error) - - // AuthLogCallback, if non-nil, is called to log all authentication - // attempts. - AuthLogCallback func(conn ConnMetadata, method string, err error) - - // ServerVersion is the version identification string to announce in - // the public handshake. - // If empty, a reasonable default is used. - // Note that RFC 4253 section 4.2 requires that this string start with - // "SSH-2.0-". - ServerVersion string - - // BannerCallback, if present, is called and the return string is sent to - // the client after key exchange completed but before authentication. - BannerCallback func(conn ConnMetadata) string -} - -// AddHostKey adds a private key as a host key. If an existing host -// key exists with the same algorithm, it is overwritten. Each server -// config must have at least one host key. -func (s *ServerConfig) AddHostKey(key Signer) { - for i, k := range s.hostKeys { - if k.PublicKey().Type() == key.PublicKey().Type() { - s.hostKeys[i] = key - return - } - } - - s.hostKeys = append(s.hostKeys, key) -} - -// cachedPubKey contains the results of querying whether a public key is -// acceptable for a user. -type cachedPubKey struct { - user string - pubKeyData []byte - result error - perms *Permissions -} - -const maxCachedPubKeys = 16 - -// pubKeyCache caches tests for public keys. Since SSH clients -// will query whether a public key is acceptable before attempting to -// authenticate with it, we end up with duplicate queries for public -// key validity. The cache only applies to a single ServerConn. -type pubKeyCache struct { - keys []cachedPubKey -} - -// get returns the result for a given user/algo/key tuple. -func (c *pubKeyCache) get(user string, pubKeyData []byte) (cachedPubKey, bool) { - for _, k := range c.keys { - if k.user == user && bytes.Equal(k.pubKeyData, pubKeyData) { - return k, true - } - } - return cachedPubKey{}, false -} - -// add adds the given tuple to the cache. -func (c *pubKeyCache) add(candidate cachedPubKey) { - if len(c.keys) < maxCachedPubKeys { - c.keys = append(c.keys, candidate) - } -} - -// ServerConn is an authenticated SSH connection, as seen from the -// server -type ServerConn struct { - Conn - - // If the succeeding authentication callback returned a - // non-nil Permissions pointer, it is stored here. - Permissions *Permissions -} - -// NewServerConn starts a new SSH server with c as the underlying -// transport. It starts with a handshake and, if the handshake is -// unsuccessful, it closes the connection and returns an error. The -// Request and NewChannel channels must be serviced, or the connection -// will hang. -func NewServerConn(c net.Conn, config *ServerConfig) (*ServerConn, <-chan NewChannel, <-chan *Request, error) { - fullConf := *config - fullConf.SetDefaults() - if fullConf.MaxAuthTries == 0 { - fullConf.MaxAuthTries = 6 - } - - s := &connection{ - sshConn: sshConn{conn: c}, - } - perms, err := s.serverHandshake(&fullConf) - if err != nil { - c.Close() - return nil, nil, nil, err - } - return &ServerConn{s, perms}, s.mux.incomingChannels, s.mux.incomingRequests, nil -} - -// signAndMarshal signs the data with the appropriate algorithm, -// and serializes the result in SSH wire format. -func signAndMarshal(k Signer, rand io.Reader, data []byte) ([]byte, error) { - sig, err := k.Sign(rand, data) - if err != nil { - return nil, err - } - - return Marshal(sig), nil -} - -// handshake performs key exchange and user authentication. -func (s *connection) serverHandshake(config *ServerConfig) (*Permissions, error) { - if len(config.hostKeys) == 0 { - return nil, errors.New("ssh: server has no host keys") - } - - if !config.NoClientAuth && config.PasswordCallback == nil && config.PublicKeyCallback == nil && config.KeyboardInteractiveCallback == nil { - return nil, errors.New("ssh: no authentication methods configured but NoClientAuth is also false") - } - - if config.ServerVersion != "" { - s.serverVersion = []byte(config.ServerVersion) - } else { - s.serverVersion = []byte(packageVersion) - } - var err error - s.clientVersion, err = exchangeVersions(s.sshConn.conn, s.serverVersion) - if err != nil { - return nil, err - } - - tr := newTransport(s.sshConn.conn, config.Rand, false /* not client */) - s.transport = newServerTransport(tr, s.clientVersion, s.serverVersion, config) - - if err := s.transport.waitSession(); err != nil { - return nil, err - } - - // We just did the key change, so the session ID is established. - s.sessionID = s.transport.getSessionID() - - var packet []byte - if packet, err = s.transport.readPacket(); err != nil { - return nil, err - } - - var serviceRequest serviceRequestMsg - if err = Unmarshal(packet, &serviceRequest); err != nil { - return nil, err - } - if serviceRequest.Service != serviceUserAuth { - return nil, errors.New("ssh: requested service '" + serviceRequest.Service + "' before authenticating") - } - serviceAccept := serviceAcceptMsg{ - Service: serviceUserAuth, - } - if err := s.transport.writePacket(Marshal(&serviceAccept)); err != nil { - return nil, err - } - - perms, err := s.serverAuthenticate(config) - if err != nil { - return nil, err - } - s.mux = newMux(s.transport) - return perms, err -} - -func isAcceptableAlgo(algo string) bool { - switch algo { - case KeyAlgoRSA, KeyAlgoDSA, KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521, KeyAlgoED25519, - CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01: - return true - } - return false -} - -func checkSourceAddress(addr net.Addr, sourceAddrs string) error { - if addr == nil { - return errors.New("ssh: no address known for client, but source-address match required") - } - - tcpAddr, ok := addr.(*net.TCPAddr) - if !ok { - return fmt.Errorf("ssh: remote address %v is not an TCP address when checking source-address match", addr) - } - - for _, sourceAddr := range strings.Split(sourceAddrs, ",") { - if allowedIP := net.ParseIP(sourceAddr); allowedIP != nil { - if allowedIP.Equal(tcpAddr.IP) { - return nil - } - } else { - _, ipNet, err := net.ParseCIDR(sourceAddr) - if err != nil { - return fmt.Errorf("ssh: error parsing source-address restriction %q: %v", sourceAddr, err) - } - - if ipNet.Contains(tcpAddr.IP) { - return nil - } - } - } - - return fmt.Errorf("ssh: remote address %v is not allowed because of source-address restriction", addr) -} - -// ServerAuthError implements the error interface. It appends any authentication -// errors that may occur, and is returned if all of the authentication methods -// provided by the user failed to authenticate. -type ServerAuthError struct { - // Errors contains authentication errors returned by the authentication - // callback methods. - Errors []error -} - -func (l ServerAuthError) Error() string { - var errs []string - for _, err := range l.Errors { - errs = append(errs, err.Error()) - } - return "[" + strings.Join(errs, ", ") + "]" -} - -func (s *connection) serverAuthenticate(config *ServerConfig) (*Permissions, error) { - sessionID := s.transport.getSessionID() - var cache pubKeyCache - var perms *Permissions - - authFailures := 0 - var authErrs []error - -userAuthLoop: - for { - if authFailures >= config.MaxAuthTries && config.MaxAuthTries > 0 { - discMsg := &disconnectMsg{ - Reason: 2, - Message: "too many authentication failures", - } - - if err := s.transport.writePacket(Marshal(discMsg)); err != nil { - return nil, err - } - - return nil, discMsg - } - - var userAuthReq userAuthRequestMsg - if packet, err := s.transport.readPacket(); err != nil { - if err == io.EOF { - return nil, &ServerAuthError{Errors: authErrs} - } - return nil, err - } else if err = Unmarshal(packet, &userAuthReq); err != nil { - return nil, err - } - - if userAuthReq.Service != serviceSSH { - return nil, errors.New("ssh: client attempted to negotiate for unknown service: " + userAuthReq.Service) - } - - s.user = userAuthReq.User - - if authFailures == 0 && config.BannerCallback != nil { - msg := config.BannerCallback(s) - if msg != "" { - bannerMsg := &userAuthBannerMsg{ - Message: msg, - } - if err := s.transport.writePacket(Marshal(bannerMsg)); err != nil { - return nil, err - } - } - } - - perms = nil - authErr := errors.New("no auth passed yet") - - switch userAuthReq.Method { - case "none": - if config.NoClientAuth { - authErr = nil - } - - // allow initial attempt of 'none' without penalty - if authFailures == 0 { - authFailures-- - } - case "password": - if config.PasswordCallback == nil { - authErr = errors.New("ssh: password auth not configured") - break - } - payload := userAuthReq.Payload - if len(payload) < 1 || payload[0] != 0 { - return nil, parseError(msgUserAuthRequest) - } - payload = payload[1:] - password, payload, ok := parseString(payload) - if !ok || len(payload) > 0 { - return nil, parseError(msgUserAuthRequest) - } - - perms, authErr = config.PasswordCallback(s, password) - case "keyboard-interactive": - if config.KeyboardInteractiveCallback == nil { - authErr = errors.New("ssh: keyboard-interactive auth not configubred") - break - } - - prompter := &sshClientKeyboardInteractive{s} - perms, authErr = config.KeyboardInteractiveCallback(s, prompter.Challenge) - case "publickey": - if config.PublicKeyCallback == nil { - authErr = errors.New("ssh: publickey auth not configured") - break - } - payload := userAuthReq.Payload - if len(payload) < 1 { - return nil, parseError(msgUserAuthRequest) - } - isQuery := payload[0] == 0 - payload = payload[1:] - algoBytes, payload, ok := parseString(payload) - if !ok { - return nil, parseError(msgUserAuthRequest) - } - algo := string(algoBytes) - if !isAcceptableAlgo(algo) { - authErr = fmt.Errorf("ssh: algorithm %q not accepted", algo) - break - } - - pubKeyData, payload, ok := parseString(payload) - if !ok { - return nil, parseError(msgUserAuthRequest) - } - - pubKey, err := ParsePublicKey(pubKeyData) - if err != nil { - return nil, err - } - - candidate, ok := cache.get(s.user, pubKeyData) - if !ok { - candidate.user = s.user - candidate.pubKeyData = pubKeyData - candidate.perms, candidate.result = config.PublicKeyCallback(s, pubKey) - if candidate.result == nil && candidate.perms != nil && candidate.perms.CriticalOptions != nil && candidate.perms.CriticalOptions[sourceAddressCriticalOption] != "" { - candidate.result = checkSourceAddress( - s.RemoteAddr(), - candidate.perms.CriticalOptions[sourceAddressCriticalOption]) - } - cache.add(candidate) - } - - if isQuery { - // The client can query if the given public key - // would be okay. - - if len(payload) > 0 { - return nil, parseError(msgUserAuthRequest) - } - - if candidate.result == nil { - okMsg := userAuthPubKeyOkMsg{ - Algo: algo, - PubKey: pubKeyData, - } - if err = s.transport.writePacket(Marshal(&okMsg)); err != nil { - return nil, err - } - continue userAuthLoop - } - authErr = candidate.result - } else { - sig, payload, ok := parseSignature(payload) - if !ok || len(payload) > 0 { - return nil, parseError(msgUserAuthRequest) - } - // Ensure the public key algo and signature algo - // are supported. Compare the private key - // algorithm name that corresponds to algo with - // sig.Format. This is usually the same, but - // for certs, the names differ. - if !isAcceptableAlgo(sig.Format) { - break - } - signedData := buildDataSignedForAuth(sessionID, userAuthReq, algoBytes, pubKeyData) - - if err := pubKey.Verify(signedData, sig); err != nil { - return nil, err - } - - authErr = candidate.result - perms = candidate.perms - } - default: - authErr = fmt.Errorf("ssh: unknown method %q", userAuthReq.Method) - } - - authErrs = append(authErrs, authErr) - - if config.AuthLogCallback != nil { - config.AuthLogCallback(s, userAuthReq.Method, authErr) - } - - if authErr == nil { - break userAuthLoop - } - - authFailures++ - - var failureMsg userAuthFailureMsg - if config.PasswordCallback != nil { - failureMsg.Methods = append(failureMsg.Methods, "password") - } - if config.PublicKeyCallback != nil { - failureMsg.Methods = append(failureMsg.Methods, "publickey") - } - if config.KeyboardInteractiveCallback != nil { - failureMsg.Methods = append(failureMsg.Methods, "keyboard-interactive") - } - - if len(failureMsg.Methods) == 0 { - return nil, errors.New("ssh: no authentication methods configured but NoClientAuth is also false") - } - - if err := s.transport.writePacket(Marshal(&failureMsg)); err != nil { - return nil, err - } - } - - if err := s.transport.writePacket([]byte{msgUserAuthSuccess}); err != nil { - return nil, err - } - return perms, nil -} - -// sshClientKeyboardInteractive implements a ClientKeyboardInteractive by -// asking the client on the other side of a ServerConn. -type sshClientKeyboardInteractive struct { - *connection -} - -func (c *sshClientKeyboardInteractive) Challenge(user, instruction string, questions []string, echos []bool) (answers []string, err error) { - if len(questions) != len(echos) { - return nil, errors.New("ssh: echos and questions must have equal length") - } - - var prompts []byte - for i := range questions { - prompts = appendString(prompts, questions[i]) - prompts = appendBool(prompts, echos[i]) - } - - if err := c.transport.writePacket(Marshal(&userAuthInfoRequestMsg{ - Instruction: instruction, - NumPrompts: uint32(len(questions)), - Prompts: prompts, - })); err != nil { - return nil, err - } - - packet, err := c.transport.readPacket() - if err != nil { - return nil, err - } - if packet[0] != msgUserAuthInfoResponse { - return nil, unexpectedMessageError(msgUserAuthInfoResponse, packet[0]) - } - packet = packet[1:] - - n, packet, ok := parseUint32(packet) - if !ok || int(n) != len(questions) { - return nil, parseError(msgUserAuthInfoResponse) - } - - for i := uint32(0); i < n; i++ { - ans, rest, ok := parseString(packet) - if !ok { - return nil, parseError(msgUserAuthInfoResponse) - } - - answers = append(answers, string(ans)) - packet = rest - } - if len(packet) != 0 { - return nil, errors.New("ssh: junk at end of message") - } - - return answers, nil -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/session.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/session.go deleted file mode 100644 index cc06e03f5..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/session.go +++ /dev/null @@ -1,647 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -// Session implements an interactive session described in -// "RFC 4254, section 6". - -import ( - "bytes" - "encoding/binary" - "errors" - "fmt" - "io" - "io/ioutil" - "sync" -) - -type Signal string - -// POSIX signals as listed in RFC 4254 Section 6.10. -const ( - SIGABRT Signal = "ABRT" - SIGALRM Signal = "ALRM" - SIGFPE Signal = "FPE" - SIGHUP Signal = "HUP" - SIGILL Signal = "ILL" - SIGINT Signal = "INT" - SIGKILL Signal = "KILL" - SIGPIPE Signal = "PIPE" - SIGQUIT Signal = "QUIT" - SIGSEGV Signal = "SEGV" - SIGTERM Signal = "TERM" - SIGUSR1 Signal = "USR1" - SIGUSR2 Signal = "USR2" -) - -var signals = map[Signal]int{ - SIGABRT: 6, - SIGALRM: 14, - SIGFPE: 8, - SIGHUP: 1, - SIGILL: 4, - SIGINT: 2, - SIGKILL: 9, - SIGPIPE: 13, - SIGQUIT: 3, - SIGSEGV: 11, - SIGTERM: 15, -} - -type TerminalModes map[uint8]uint32 - -// POSIX terminal mode flags as listed in RFC 4254 Section 8. -const ( - tty_OP_END = 0 - VINTR = 1 - VQUIT = 2 - VERASE = 3 - VKILL = 4 - VEOF = 5 - VEOL = 6 - VEOL2 = 7 - VSTART = 8 - VSTOP = 9 - VSUSP = 10 - VDSUSP = 11 - VREPRINT = 12 - VWERASE = 13 - VLNEXT = 14 - VFLUSH = 15 - VSWTCH = 16 - VSTATUS = 17 - VDISCARD = 18 - IGNPAR = 30 - PARMRK = 31 - INPCK = 32 - ISTRIP = 33 - INLCR = 34 - IGNCR = 35 - ICRNL = 36 - IUCLC = 37 - IXON = 38 - IXANY = 39 - IXOFF = 40 - IMAXBEL = 41 - ISIG = 50 - ICANON = 51 - XCASE = 52 - ECHO = 53 - ECHOE = 54 - ECHOK = 55 - ECHONL = 56 - NOFLSH = 57 - TOSTOP = 58 - IEXTEN = 59 - ECHOCTL = 60 - ECHOKE = 61 - PENDIN = 62 - OPOST = 70 - OLCUC = 71 - ONLCR = 72 - OCRNL = 73 - ONOCR = 74 - ONLRET = 75 - CS7 = 90 - CS8 = 91 - PARENB = 92 - PARODD = 93 - TTY_OP_ISPEED = 128 - TTY_OP_OSPEED = 129 -) - -// A Session represents a connection to a remote command or shell. -type Session struct { - // Stdin specifies the remote process's standard input. - // If Stdin is nil, the remote process reads from an empty - // bytes.Buffer. - Stdin io.Reader - - // Stdout and Stderr specify the remote process's standard - // output and error. - // - // If either is nil, Run connects the corresponding file - // descriptor to an instance of ioutil.Discard. There is a - // fixed amount of buffering that is shared for the two streams. - // If either blocks it may eventually cause the remote - // command to block. - Stdout io.Writer - Stderr io.Writer - - ch Channel // the channel backing this session - started bool // true once Start, Run or Shell is invoked. - copyFuncs []func() error - errors chan error // one send per copyFunc - - // true if pipe method is active - stdinpipe, stdoutpipe, stderrpipe bool - - // stdinPipeWriter is non-nil if StdinPipe has not been called - // and Stdin was specified by the user; it is the write end of - // a pipe connecting Session.Stdin to the stdin channel. - stdinPipeWriter io.WriteCloser - - exitStatus chan error -} - -// SendRequest sends an out-of-band channel request on the SSH channel -// underlying the session. -func (s *Session) SendRequest(name string, wantReply bool, payload []byte) (bool, error) { - return s.ch.SendRequest(name, wantReply, payload) -} - -func (s *Session) Close() error { - return s.ch.Close() -} - -// RFC 4254 Section 6.4. -type setenvRequest struct { - Name string - Value string -} - -// Setenv sets an environment variable that will be applied to any -// command executed by Shell or Run. -func (s *Session) Setenv(name, value string) error { - msg := setenvRequest{ - Name: name, - Value: value, - } - ok, err := s.ch.SendRequest("env", true, Marshal(&msg)) - if err == nil && !ok { - err = errors.New("ssh: setenv failed") - } - return err -} - -// RFC 4254 Section 6.2. -type ptyRequestMsg struct { - Term string - Columns uint32 - Rows uint32 - Width uint32 - Height uint32 - Modelist string -} - -// RequestPty requests the association of a pty with the session on the remote host. -func (s *Session) RequestPty(term string, h, w int, termmodes TerminalModes) error { - var tm []byte - for k, v := range termmodes { - kv := struct { - Key byte - Val uint32 - }{k, v} - - tm = append(tm, Marshal(&kv)...) - } - tm = append(tm, tty_OP_END) - req := ptyRequestMsg{ - Term: term, - Columns: uint32(w), - Rows: uint32(h), - Width: uint32(w * 8), - Height: uint32(h * 8), - Modelist: string(tm), - } - ok, err := s.ch.SendRequest("pty-req", true, Marshal(&req)) - if err == nil && !ok { - err = errors.New("ssh: pty-req failed") - } - return err -} - -// RFC 4254 Section 6.5. -type subsystemRequestMsg struct { - Subsystem string -} - -// RequestSubsystem requests the association of a subsystem with the session on the remote host. -// A subsystem is a predefined command that runs in the background when the ssh session is initiated -func (s *Session) RequestSubsystem(subsystem string) error { - msg := subsystemRequestMsg{ - Subsystem: subsystem, - } - ok, err := s.ch.SendRequest("subsystem", true, Marshal(&msg)) - if err == nil && !ok { - err = errors.New("ssh: subsystem request failed") - } - return err -} - -// RFC 4254 Section 6.7. -type ptyWindowChangeMsg struct { - Columns uint32 - Rows uint32 - Width uint32 - Height uint32 -} - -// WindowChange informs the remote host about a terminal window dimension change to h rows and w columns. -func (s *Session) WindowChange(h, w int) error { - req := ptyWindowChangeMsg{ - Columns: uint32(w), - Rows: uint32(h), - Width: uint32(w * 8), - Height: uint32(h * 8), - } - _, err := s.ch.SendRequest("window-change", false, Marshal(&req)) - return err -} - -// RFC 4254 Section 6.9. -type signalMsg struct { - Signal string -} - -// Signal sends the given signal to the remote process. -// sig is one of the SIG* constants. -func (s *Session) Signal(sig Signal) error { - msg := signalMsg{ - Signal: string(sig), - } - - _, err := s.ch.SendRequest("signal", false, Marshal(&msg)) - return err -} - -// RFC 4254 Section 6.5. -type execMsg struct { - Command string -} - -// Start runs cmd on the remote host. Typically, the remote -// server passes cmd to the shell for interpretation. -// A Session only accepts one call to Run, Start or Shell. -func (s *Session) Start(cmd string) error { - if s.started { - return errors.New("ssh: session already started") - } - req := execMsg{ - Command: cmd, - } - - ok, err := s.ch.SendRequest("exec", true, Marshal(&req)) - if err == nil && !ok { - err = fmt.Errorf("ssh: command %v failed", cmd) - } - if err != nil { - return err - } - return s.start() -} - -// Run runs cmd on the remote host. Typically, the remote -// server passes cmd to the shell for interpretation. -// A Session only accepts one call to Run, Start, Shell, Output, -// or CombinedOutput. -// -// The returned error is nil if the command runs, has no problems -// copying stdin, stdout, and stderr, and exits with a zero exit -// status. -// -// If the remote server does not send an exit status, an error of type -// *ExitMissingError is returned. If the command completes -// unsuccessfully or is interrupted by a signal, the error is of type -// *ExitError. Other error types may be returned for I/O problems. -func (s *Session) Run(cmd string) error { - err := s.Start(cmd) - if err != nil { - return err - } - return s.Wait() -} - -// Output runs cmd on the remote host and returns its standard output. -func (s *Session) Output(cmd string) ([]byte, error) { - if s.Stdout != nil { - return nil, errors.New("ssh: Stdout already set") - } - var b bytes.Buffer - s.Stdout = &b - err := s.Run(cmd) - return b.Bytes(), err -} - -type singleWriter struct { - b bytes.Buffer - mu sync.Mutex -} - -func (w *singleWriter) Write(p []byte) (int, error) { - w.mu.Lock() - defer w.mu.Unlock() - return w.b.Write(p) -} - -// CombinedOutput runs cmd on the remote host and returns its combined -// standard output and standard error. -func (s *Session) CombinedOutput(cmd string) ([]byte, error) { - if s.Stdout != nil { - return nil, errors.New("ssh: Stdout already set") - } - if s.Stderr != nil { - return nil, errors.New("ssh: Stderr already set") - } - var b singleWriter - s.Stdout = &b - s.Stderr = &b - err := s.Run(cmd) - return b.b.Bytes(), err -} - -// Shell starts a login shell on the remote host. A Session only -// accepts one call to Run, Start, Shell, Output, or CombinedOutput. -func (s *Session) Shell() error { - if s.started { - return errors.New("ssh: session already started") - } - - ok, err := s.ch.SendRequest("shell", true, nil) - if err == nil && !ok { - return errors.New("ssh: could not start shell") - } - if err != nil { - return err - } - return s.start() -} - -func (s *Session) start() error { - s.started = true - - type F func(*Session) - for _, setupFd := range []F{(*Session).stdin, (*Session).stdout, (*Session).stderr} { - setupFd(s) - } - - s.errors = make(chan error, len(s.copyFuncs)) - for _, fn := range s.copyFuncs { - go func(fn func() error) { - s.errors <- fn() - }(fn) - } - return nil -} - -// Wait waits for the remote command to exit. -// -// The returned error is nil if the command runs, has no problems -// copying stdin, stdout, and stderr, and exits with a zero exit -// status. -// -// If the remote server does not send an exit status, an error of type -// *ExitMissingError is returned. If the command completes -// unsuccessfully or is interrupted by a signal, the error is of type -// *ExitError. Other error types may be returned for I/O problems. -func (s *Session) Wait() error { - if !s.started { - return errors.New("ssh: session not started") - } - waitErr := <-s.exitStatus - - if s.stdinPipeWriter != nil { - s.stdinPipeWriter.Close() - } - var copyError error - for _ = range s.copyFuncs { - if err := <-s.errors; err != nil && copyError == nil { - copyError = err - } - } - if waitErr != nil { - return waitErr - } - return copyError -} - -func (s *Session) wait(reqs <-chan *Request) error { - wm := Waitmsg{status: -1} - // Wait for msg channel to be closed before returning. - for msg := range reqs { - switch msg.Type { - case "exit-status": - wm.status = int(binary.BigEndian.Uint32(msg.Payload)) - case "exit-signal": - var sigval struct { - Signal string - CoreDumped bool - Error string - Lang string - } - if err := Unmarshal(msg.Payload, &sigval); err != nil { - return err - } - - // Must sanitize strings? - wm.signal = sigval.Signal - wm.msg = sigval.Error - wm.lang = sigval.Lang - default: - // This handles keepalives and matches - // OpenSSH's behaviour. - if msg.WantReply { - msg.Reply(false, nil) - } - } - } - if wm.status == 0 { - return nil - } - if wm.status == -1 { - // exit-status was never sent from server - if wm.signal == "" { - // signal was not sent either. RFC 4254 - // section 6.10 recommends against this - // behavior, but it is allowed, so we let - // clients handle it. - return &ExitMissingError{} - } - wm.status = 128 - if _, ok := signals[Signal(wm.signal)]; ok { - wm.status += signals[Signal(wm.signal)] - } - } - - return &ExitError{wm} -} - -// ExitMissingError is returned if a session is torn down cleanly, but -// the server sends no confirmation of the exit status. -type ExitMissingError struct{} - -func (e *ExitMissingError) Error() string { - return "wait: remote command exited without exit status or exit signal" -} - -func (s *Session) stdin() { - if s.stdinpipe { - return - } - var stdin io.Reader - if s.Stdin == nil { - stdin = new(bytes.Buffer) - } else { - r, w := io.Pipe() - go func() { - _, err := io.Copy(w, s.Stdin) - w.CloseWithError(err) - }() - stdin, s.stdinPipeWriter = r, w - } - s.copyFuncs = append(s.copyFuncs, func() error { - _, err := io.Copy(s.ch, stdin) - if err1 := s.ch.CloseWrite(); err == nil && err1 != io.EOF { - err = err1 - } - return err - }) -} - -func (s *Session) stdout() { - if s.stdoutpipe { - return - } - if s.Stdout == nil { - s.Stdout = ioutil.Discard - } - s.copyFuncs = append(s.copyFuncs, func() error { - _, err := io.Copy(s.Stdout, s.ch) - return err - }) -} - -func (s *Session) stderr() { - if s.stderrpipe { - return - } - if s.Stderr == nil { - s.Stderr = ioutil.Discard - } - s.copyFuncs = append(s.copyFuncs, func() error { - _, err := io.Copy(s.Stderr, s.ch.Stderr()) - return err - }) -} - -// sessionStdin reroutes Close to CloseWrite. -type sessionStdin struct { - io.Writer - ch Channel -} - -func (s *sessionStdin) Close() error { - return s.ch.CloseWrite() -} - -// StdinPipe returns a pipe that will be connected to the -// remote command's standard input when the command starts. -func (s *Session) StdinPipe() (io.WriteCloser, error) { - if s.Stdin != nil { - return nil, errors.New("ssh: Stdin already set") - } - if s.started { - return nil, errors.New("ssh: StdinPipe after process started") - } - s.stdinpipe = true - return &sessionStdin{s.ch, s.ch}, nil -} - -// StdoutPipe returns a pipe that will be connected to the -// remote command's standard output when the command starts. -// There is a fixed amount of buffering that is shared between -// stdout and stderr streams. If the StdoutPipe reader is -// not serviced fast enough it may eventually cause the -// remote command to block. -func (s *Session) StdoutPipe() (io.Reader, error) { - if s.Stdout != nil { - return nil, errors.New("ssh: Stdout already set") - } - if s.started { - return nil, errors.New("ssh: StdoutPipe after process started") - } - s.stdoutpipe = true - return s.ch, nil -} - -// StderrPipe returns a pipe that will be connected to the -// remote command's standard error when the command starts. -// There is a fixed amount of buffering that is shared between -// stdout and stderr streams. If the StderrPipe reader is -// not serviced fast enough it may eventually cause the -// remote command to block. -func (s *Session) StderrPipe() (io.Reader, error) { - if s.Stderr != nil { - return nil, errors.New("ssh: Stderr already set") - } - if s.started { - return nil, errors.New("ssh: StderrPipe after process started") - } - s.stderrpipe = true - return s.ch.Stderr(), nil -} - -// newSession returns a new interactive session on the remote host. -func newSession(ch Channel, reqs <-chan *Request) (*Session, error) { - s := &Session{ - ch: ch, - } - s.exitStatus = make(chan error, 1) - go func() { - s.exitStatus <- s.wait(reqs) - }() - - return s, nil -} - -// An ExitError reports unsuccessful completion of a remote command. -type ExitError struct { - Waitmsg -} - -func (e *ExitError) Error() string { - return e.Waitmsg.String() -} - -// Waitmsg stores the information about an exited remote command -// as reported by Wait. -type Waitmsg struct { - status int - signal string - msg string - lang string -} - -// ExitStatus returns the exit status of the remote command. -func (w Waitmsg) ExitStatus() int { - return w.status -} - -// Signal returns the exit signal of the remote command if -// it was terminated violently. -func (w Waitmsg) Signal() string { - return w.signal -} - -// Msg returns the exit message given by the remote command -func (w Waitmsg) Msg() string { - return w.msg -} - -// Lang returns the language tag. See RFC 3066 -func (w Waitmsg) Lang() string { - return w.lang -} - -func (w Waitmsg) String() string { - str := fmt.Sprintf("Process exited with status %v", w.status) - if w.signal != "" { - str += fmt.Sprintf(" from signal %v", w.signal) - } - if w.msg != "" { - str += fmt.Sprintf(". Reason was: %v", w.msg) - } - return str -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/session_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/session_test.go deleted file mode 100644 index 7dce6dd69..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/session_test.go +++ /dev/null @@ -1,774 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -// Session tests. - -import ( - "bytes" - crypto_rand "crypto/rand" - "errors" - "io" - "io/ioutil" - "math/rand" - "net" - "testing" - - "golang.org/x/crypto/ssh/terminal" -) - -type serverType func(Channel, <-chan *Request, *testing.T) - -// dial constructs a new test server and returns a *ClientConn. -func dial(handler serverType, t *testing.T) *Client { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - - go func() { - defer c1.Close() - conf := ServerConfig{ - NoClientAuth: true, - } - conf.AddHostKey(testSigners["rsa"]) - - _, chans, reqs, err := NewServerConn(c1, &conf) - if err != nil { - t.Fatalf("Unable to handshake: %v", err) - } - go DiscardRequests(reqs) - - for newCh := range chans { - if newCh.ChannelType() != "session" { - newCh.Reject(UnknownChannelType, "unknown channel type") - continue - } - - ch, inReqs, err := newCh.Accept() - if err != nil { - t.Errorf("Accept: %v", err) - continue - } - go func() { - handler(ch, inReqs, t) - }() - } - }() - - config := &ClientConfig{ - User: "testuser", - HostKeyCallback: InsecureIgnoreHostKey(), - } - - conn, chans, reqs, err := NewClientConn(c2, "", config) - if err != nil { - t.Fatalf("unable to dial remote side: %v", err) - } - - return NewClient(conn, chans, reqs) -} - -// Test a simple string is returned to session.Stdout. -func TestSessionShell(t *testing.T) { - conn := dial(shellHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - stdout := new(bytes.Buffer) - session.Stdout = stdout - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %s", err) - } - if err := session.Wait(); err != nil { - t.Fatalf("Remote command did not exit cleanly: %v", err) - } - actual := stdout.String() - if actual != "golang" { - t.Fatalf("Remote shell did not return expected string: expected=golang, actual=%s", actual) - } -} - -// TODO(dfc) add support for Std{in,err}Pipe when the Server supports it. - -// Test a simple string is returned via StdoutPipe. -func TestSessionStdoutPipe(t *testing.T) { - conn := dial(shellHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - stdout, err := session.StdoutPipe() - if err != nil { - t.Fatalf("Unable to request StdoutPipe(): %v", err) - } - var buf bytes.Buffer - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %v", err) - } - done := make(chan bool, 1) - go func() { - if _, err := io.Copy(&buf, stdout); err != nil { - t.Errorf("Copy of stdout failed: %v", err) - } - done <- true - }() - if err := session.Wait(); err != nil { - t.Fatalf("Remote command did not exit cleanly: %v", err) - } - <-done - actual := buf.String() - if actual != "golang" { - t.Fatalf("Remote shell did not return expected string: expected=golang, actual=%s", actual) - } -} - -// Test that a simple string is returned via the Output helper, -// and that stderr is discarded. -func TestSessionOutput(t *testing.T) { - conn := dial(fixedOutputHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - - buf, err := session.Output("") // cmd is ignored by fixedOutputHandler - if err != nil { - t.Error("Remote command did not exit cleanly:", err) - } - w := "this-is-stdout." - g := string(buf) - if g != w { - t.Error("Remote command did not return expected string:") - t.Logf("want %q", w) - t.Logf("got %q", g) - } -} - -// Test that both stdout and stderr are returned -// via the CombinedOutput helper. -func TestSessionCombinedOutput(t *testing.T) { - conn := dial(fixedOutputHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - - buf, err := session.CombinedOutput("") // cmd is ignored by fixedOutputHandler - if err != nil { - t.Error("Remote command did not exit cleanly:", err) - } - const stdout = "this-is-stdout." - const stderr = "this-is-stderr." - g := string(buf) - if g != stdout+stderr && g != stderr+stdout { - t.Error("Remote command did not return expected string:") - t.Logf("want %q, or %q", stdout+stderr, stderr+stdout) - t.Logf("got %q", g) - } -} - -// Test non-0 exit status is returned correctly. -func TestExitStatusNonZero(t *testing.T) { - conn := dial(exitStatusNonZeroHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %v", err) - } - err = session.Wait() - if err == nil { - t.Fatalf("expected command to fail but it didn't") - } - e, ok := err.(*ExitError) - if !ok { - t.Fatalf("expected *ExitError but got %T", err) - } - if e.ExitStatus() != 15 { - t.Fatalf("expected command to exit with 15 but got %v", e.ExitStatus()) - } -} - -// Test 0 exit status is returned correctly. -func TestExitStatusZero(t *testing.T) { - conn := dial(exitStatusZeroHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %v", err) - } - err = session.Wait() - if err != nil { - t.Fatalf("expected nil but got %v", err) - } -} - -// Test exit signal and status are both returned correctly. -func TestExitSignalAndStatus(t *testing.T) { - conn := dial(exitSignalAndStatusHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %v", err) - } - err = session.Wait() - if err == nil { - t.Fatalf("expected command to fail but it didn't") - } - e, ok := err.(*ExitError) - if !ok { - t.Fatalf("expected *ExitError but got %T", err) - } - if e.Signal() != "TERM" || e.ExitStatus() != 15 { - t.Fatalf("expected command to exit with signal TERM and status 15 but got signal %s and status %v", e.Signal(), e.ExitStatus()) - } -} - -// Test exit signal and status are both returned correctly. -func TestKnownExitSignalOnly(t *testing.T) { - conn := dial(exitSignalHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %v", err) - } - err = session.Wait() - if err == nil { - t.Fatalf("expected command to fail but it didn't") - } - e, ok := err.(*ExitError) - if !ok { - t.Fatalf("expected *ExitError but got %T", err) - } - if e.Signal() != "TERM" || e.ExitStatus() != 143 { - t.Fatalf("expected command to exit with signal TERM and status 143 but got signal %s and status %v", e.Signal(), e.ExitStatus()) - } -} - -// Test exit signal and status are both returned correctly. -func TestUnknownExitSignal(t *testing.T) { - conn := dial(exitSignalUnknownHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %v", err) - } - err = session.Wait() - if err == nil { - t.Fatalf("expected command to fail but it didn't") - } - e, ok := err.(*ExitError) - if !ok { - t.Fatalf("expected *ExitError but got %T", err) - } - if e.Signal() != "SYS" || e.ExitStatus() != 128 { - t.Fatalf("expected command to exit with signal SYS and status 128 but got signal %s and status %v", e.Signal(), e.ExitStatus()) - } -} - -func TestExitWithoutStatusOrSignal(t *testing.T) { - conn := dial(exitWithoutSignalOrStatus, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatalf("Unable to request new session: %v", err) - } - defer session.Close() - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %v", err) - } - err = session.Wait() - if err == nil { - t.Fatalf("expected command to fail but it didn't") - } - if _, ok := err.(*ExitMissingError); !ok { - t.Fatalf("got %T want *ExitMissingError", err) - } -} - -// windowTestBytes is the number of bytes that we'll send to the SSH server. -const windowTestBytes = 16000 * 200 - -// TestServerWindow writes random data to the server. The server is expected to echo -// the same data back, which is compared against the original. -func TestServerWindow(t *testing.T) { - origBuf := bytes.NewBuffer(make([]byte, 0, windowTestBytes)) - io.CopyN(origBuf, crypto_rand.Reader, windowTestBytes) - origBytes := origBuf.Bytes() - - conn := dial(echoHandler, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatal(err) - } - defer session.Close() - result := make(chan []byte) - - go func() { - defer close(result) - echoedBuf := bytes.NewBuffer(make([]byte, 0, windowTestBytes)) - serverStdout, err := session.StdoutPipe() - if err != nil { - t.Errorf("StdoutPipe failed: %v", err) - return - } - n, err := copyNRandomly("stdout", echoedBuf, serverStdout, windowTestBytes) - if err != nil && err != io.EOF { - t.Errorf("Read only %d bytes from server, expected %d: %v", n, windowTestBytes, err) - } - result <- echoedBuf.Bytes() - }() - - serverStdin, err := session.StdinPipe() - if err != nil { - t.Fatalf("StdinPipe failed: %v", err) - } - written, err := copyNRandomly("stdin", serverStdin, origBuf, windowTestBytes) - if err != nil { - t.Fatalf("failed to copy origBuf to serverStdin: %v", err) - } - if written != windowTestBytes { - t.Fatalf("Wrote only %d of %d bytes to server", written, windowTestBytes) - } - - echoedBytes := <-result - - if !bytes.Equal(origBytes, echoedBytes) { - t.Fatalf("Echoed buffer differed from original, orig %d, echoed %d", len(origBytes), len(echoedBytes)) - } -} - -// Verify the client can handle a keepalive packet from the server. -func TestClientHandlesKeepalives(t *testing.T) { - conn := dial(channelKeepaliveSender, t) - defer conn.Close() - session, err := conn.NewSession() - if err != nil { - t.Fatal(err) - } - defer session.Close() - if err := session.Shell(); err != nil { - t.Fatalf("Unable to execute command: %v", err) - } - err = session.Wait() - if err != nil { - t.Fatalf("expected nil but got: %v", err) - } -} - -type exitStatusMsg struct { - Status uint32 -} - -type exitSignalMsg struct { - Signal string - CoreDumped bool - Errmsg string - Lang string -} - -func handleTerminalRequests(in <-chan *Request) { - for req := range in { - ok := false - switch req.Type { - case "shell": - ok = true - if len(req.Payload) > 0 { - // We don't accept any commands, only the default shell. - ok = false - } - case "env": - ok = true - } - req.Reply(ok, nil) - } -} - -func newServerShell(ch Channel, in <-chan *Request, prompt string) *terminal.Terminal { - term := terminal.NewTerminal(ch, prompt) - go handleTerminalRequests(in) - return term -} - -func exitStatusZeroHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - // this string is returned to stdout - shell := newServerShell(ch, in, "> ") - readLine(shell, t) - sendStatus(0, ch, t) -} - -func exitStatusNonZeroHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - shell := newServerShell(ch, in, "> ") - readLine(shell, t) - sendStatus(15, ch, t) -} - -func exitSignalAndStatusHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - shell := newServerShell(ch, in, "> ") - readLine(shell, t) - sendStatus(15, ch, t) - sendSignal("TERM", ch, t) -} - -func exitSignalHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - shell := newServerShell(ch, in, "> ") - readLine(shell, t) - sendSignal("TERM", ch, t) -} - -func exitSignalUnknownHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - shell := newServerShell(ch, in, "> ") - readLine(shell, t) - sendSignal("SYS", ch, t) -} - -func exitWithoutSignalOrStatus(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - shell := newServerShell(ch, in, "> ") - readLine(shell, t) -} - -func shellHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - // this string is returned to stdout - shell := newServerShell(ch, in, "golang") - readLine(shell, t) - sendStatus(0, ch, t) -} - -// Ignores the command, writes fixed strings to stderr and stdout. -// Strings are "this-is-stdout." and "this-is-stderr.". -func fixedOutputHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - _, err := ch.Read(nil) - - req, ok := <-in - if !ok { - t.Fatalf("error: expected channel request, got: %#v", err) - return - } - - // ignore request, always send some text - req.Reply(true, nil) - - _, err = io.WriteString(ch, "this-is-stdout.") - if err != nil { - t.Fatalf("error writing on server: %v", err) - } - _, err = io.WriteString(ch.Stderr(), "this-is-stderr.") - if err != nil { - t.Fatalf("error writing on server: %v", err) - } - sendStatus(0, ch, t) -} - -func readLine(shell *terminal.Terminal, t *testing.T) { - if _, err := shell.ReadLine(); err != nil && err != io.EOF { - t.Errorf("unable to read line: %v", err) - } -} - -func sendStatus(status uint32, ch Channel, t *testing.T) { - msg := exitStatusMsg{ - Status: status, - } - if _, err := ch.SendRequest("exit-status", false, Marshal(&msg)); err != nil { - t.Errorf("unable to send status: %v", err) - } -} - -func sendSignal(signal string, ch Channel, t *testing.T) { - sig := exitSignalMsg{ - Signal: signal, - CoreDumped: false, - Errmsg: "Process terminated", - Lang: "en-GB-oed", - } - if _, err := ch.SendRequest("exit-signal", false, Marshal(&sig)); err != nil { - t.Errorf("unable to send signal: %v", err) - } -} - -func discardHandler(ch Channel, t *testing.T) { - defer ch.Close() - io.Copy(ioutil.Discard, ch) -} - -func echoHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - if n, err := copyNRandomly("echohandler", ch, ch, windowTestBytes); err != nil { - t.Errorf("short write, wrote %d, expected %d: %v ", n, windowTestBytes, err) - } -} - -// copyNRandomly copies n bytes from src to dst. It uses a variable, and random, -// buffer size to exercise more code paths. -func copyNRandomly(title string, dst io.Writer, src io.Reader, n int) (int, error) { - var ( - buf = make([]byte, 32*1024) - written int - remaining = n - ) - for remaining > 0 { - l := rand.Intn(1 << 15) - if remaining < l { - l = remaining - } - nr, er := src.Read(buf[:l]) - nw, ew := dst.Write(buf[:nr]) - remaining -= nw - written += nw - if ew != nil { - return written, ew - } - if nr != nw { - return written, io.ErrShortWrite - } - if er != nil && er != io.EOF { - return written, er - } - } - return written, nil -} - -func channelKeepaliveSender(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - shell := newServerShell(ch, in, "> ") - readLine(shell, t) - if _, err := ch.SendRequest("keepalive@openssh.com", true, nil); err != nil { - t.Errorf("unable to send channel keepalive request: %v", err) - } - sendStatus(0, ch, t) -} - -func TestClientWriteEOF(t *testing.T) { - conn := dial(simpleEchoHandler, t) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatal(err) - } - defer session.Close() - stdin, err := session.StdinPipe() - if err != nil { - t.Fatalf("StdinPipe failed: %v", err) - } - stdout, err := session.StdoutPipe() - if err != nil { - t.Fatalf("StdoutPipe failed: %v", err) - } - - data := []byte(`0000`) - _, err = stdin.Write(data) - if err != nil { - t.Fatalf("Write failed: %v", err) - } - stdin.Close() - - res, err := ioutil.ReadAll(stdout) - if err != nil { - t.Fatalf("Read failed: %v", err) - } - - if !bytes.Equal(data, res) { - t.Fatalf("Read differed from write, wrote: %v, read: %v", data, res) - } -} - -func simpleEchoHandler(ch Channel, in <-chan *Request, t *testing.T) { - defer ch.Close() - data, err := ioutil.ReadAll(ch) - if err != nil { - t.Errorf("handler read error: %v", err) - } - _, err = ch.Write(data) - if err != nil { - t.Errorf("handler write error: %v", err) - } -} - -func TestSessionID(t *testing.T) { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - serverID := make(chan []byte, 1) - clientID := make(chan []byte, 1) - - serverConf := &ServerConfig{ - NoClientAuth: true, - } - serverConf.AddHostKey(testSigners["ecdsa"]) - clientConf := &ClientConfig{ - HostKeyCallback: InsecureIgnoreHostKey(), - User: "user", - } - - go func() { - conn, chans, reqs, err := NewServerConn(c1, serverConf) - if err != nil { - t.Fatalf("server handshake: %v", err) - } - serverID <- conn.SessionID() - go DiscardRequests(reqs) - for ch := range chans { - ch.Reject(Prohibited, "") - } - }() - - go func() { - conn, chans, reqs, err := NewClientConn(c2, "", clientConf) - if err != nil { - t.Fatalf("client handshake: %v", err) - } - clientID <- conn.SessionID() - go DiscardRequests(reqs) - for ch := range chans { - ch.Reject(Prohibited, "") - } - }() - - s := <-serverID - c := <-clientID - if bytes.Compare(s, c) != 0 { - t.Errorf("server session ID (%x) != client session ID (%x)", s, c) - } else if len(s) == 0 { - t.Errorf("client and server SessionID were empty.") - } -} - -type noReadConn struct { - readSeen bool - net.Conn -} - -func (c *noReadConn) Close() error { - return nil -} - -func (c *noReadConn) Read(b []byte) (int, error) { - c.readSeen = true - return 0, errors.New("noReadConn error") -} - -func TestInvalidServerConfiguration(t *testing.T) { - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - serveConn := noReadConn{Conn: c1} - serverConf := &ServerConfig{} - - NewServerConn(&serveConn, serverConf) - if serveConn.readSeen { - t.Fatalf("NewServerConn attempted to Read() from Conn while configuration is missing host key") - } - - serverConf.AddHostKey(testSigners["ecdsa"]) - - NewServerConn(&serveConn, serverConf) - if serveConn.readSeen { - t.Fatalf("NewServerConn attempted to Read() from Conn while configuration is missing authentication method") - } -} - -func TestHostKeyAlgorithms(t *testing.T) { - serverConf := &ServerConfig{ - NoClientAuth: true, - } - serverConf.AddHostKey(testSigners["rsa"]) - serverConf.AddHostKey(testSigners["ecdsa"]) - - connect := func(clientConf *ClientConfig, want string) { - var alg string - clientConf.HostKeyCallback = func(h string, a net.Addr, key PublicKey) error { - alg = key.Type() - return nil - } - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - go NewServerConn(c1, serverConf) - _, _, _, err = NewClientConn(c2, "", clientConf) - if err != nil { - t.Fatalf("NewClientConn: %v", err) - } - if alg != want { - t.Errorf("selected key algorithm %s, want %s", alg, want) - } - } - - // By default, we get the preferred algorithm, which is ECDSA 256. - - clientConf := &ClientConfig{ - HostKeyCallback: InsecureIgnoreHostKey(), - } - connect(clientConf, KeyAlgoECDSA256) - - // Client asks for RSA explicitly. - clientConf.HostKeyAlgorithms = []string{KeyAlgoRSA} - connect(clientConf, KeyAlgoRSA) - - c1, c2, err := netPipe() - if err != nil { - t.Fatalf("netPipe: %v", err) - } - defer c1.Close() - defer c2.Close() - - go NewServerConn(c1, serverConf) - clientConf.HostKeyAlgorithms = []string{"nonexistent-hostkey-algo"} - _, _, _, err = NewClientConn(c2, "", clientConf) - if err == nil { - t.Fatal("succeeded connecting with unknown hostkey algorithm") - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/streamlocal.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/streamlocal.go deleted file mode 100644 index a2dccc64c..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/streamlocal.go +++ /dev/null @@ -1,115 +0,0 @@ -package ssh - -import ( - "errors" - "io" - "net" -) - -// streamLocalChannelOpenDirectMsg is a struct used for SSH_MSG_CHANNEL_OPEN message -// with "direct-streamlocal@openssh.com" string. -// -// See openssh-portable/PROTOCOL, section 2.4. connection: Unix domain socket forwarding -// https://github.com/openssh/openssh-portable/blob/master/PROTOCOL#L235 -type streamLocalChannelOpenDirectMsg struct { - socketPath string - reserved0 string - reserved1 uint32 -} - -// forwardedStreamLocalPayload is a struct used for SSH_MSG_CHANNEL_OPEN message -// with "forwarded-streamlocal@openssh.com" string. -type forwardedStreamLocalPayload struct { - SocketPath string - Reserved0 string -} - -// streamLocalChannelForwardMsg is a struct used for SSH2_MSG_GLOBAL_REQUEST message -// with "streamlocal-forward@openssh.com"/"cancel-streamlocal-forward@openssh.com" string. -type streamLocalChannelForwardMsg struct { - socketPath string -} - -// ListenUnix is similar to ListenTCP but uses a Unix domain socket. -func (c *Client) ListenUnix(socketPath string) (net.Listener, error) { - m := streamLocalChannelForwardMsg{ - socketPath, - } - // send message - ok, _, err := c.SendRequest("streamlocal-forward@openssh.com", true, Marshal(&m)) - if err != nil { - return nil, err - } - if !ok { - return nil, errors.New("ssh: streamlocal-forward@openssh.com request denied by peer") - } - ch := c.forwards.add(&net.UnixAddr{Name: socketPath, Net: "unix"}) - - return &unixListener{socketPath, c, ch}, nil -} - -func (c *Client) dialStreamLocal(socketPath string) (Channel, error) { - msg := streamLocalChannelOpenDirectMsg{ - socketPath: socketPath, - } - ch, in, err := c.OpenChannel("direct-streamlocal@openssh.com", Marshal(&msg)) - if err != nil { - return nil, err - } - go DiscardRequests(in) - return ch, err -} - -type unixListener struct { - socketPath string - - conn *Client - in <-chan forward -} - -// Accept waits for and returns the next connection to the listener. -func (l *unixListener) Accept() (net.Conn, error) { - s, ok := <-l.in - if !ok { - return nil, io.EOF - } - ch, incoming, err := s.newCh.Accept() - if err != nil { - return nil, err - } - go DiscardRequests(incoming) - - return &chanConn{ - Channel: ch, - laddr: &net.UnixAddr{ - Name: l.socketPath, - Net: "unix", - }, - raddr: &net.UnixAddr{ - Name: "@", - Net: "unix", - }, - }, nil -} - -// Close closes the listener. -func (l *unixListener) Close() error { - // this also closes the listener. - l.conn.forwards.remove(&net.UnixAddr{Name: l.socketPath, Net: "unix"}) - m := streamLocalChannelForwardMsg{ - l.socketPath, - } - ok, _, err := l.conn.SendRequest("cancel-streamlocal-forward@openssh.com", true, Marshal(&m)) - if err == nil && !ok { - err = errors.New("ssh: cancel-streamlocal-forward@openssh.com failed") - } - return err -} - -// Addr returns the listener's network address. -func (l *unixListener) Addr() net.Addr { - return &net.UnixAddr{ - Name: l.socketPath, - Net: "unix", - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/tcpip.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/tcpip.go deleted file mode 100644 index acf17175d..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/tcpip.go +++ /dev/null @@ -1,465 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "errors" - "fmt" - "io" - "math/rand" - "net" - "strconv" - "strings" - "sync" - "time" -) - -// Listen requests the remote peer open a listening socket on -// addr. Incoming connections will be available by calling Accept on -// the returned net.Listener. The listener must be serviced, or the -// SSH connection may hang. -// N must be "tcp", "tcp4", "tcp6", or "unix". -func (c *Client) Listen(n, addr string) (net.Listener, error) { - switch n { - case "tcp", "tcp4", "tcp6": - laddr, err := net.ResolveTCPAddr(n, addr) - if err != nil { - return nil, err - } - return c.ListenTCP(laddr) - case "unix": - return c.ListenUnix(addr) - default: - return nil, fmt.Errorf("ssh: unsupported protocol: %s", n) - } -} - -// Automatic port allocation is broken with OpenSSH before 6.0. See -// also https://bugzilla.mindrot.org/show_bug.cgi?id=2017. In -// particular, OpenSSH 5.9 sends a channelOpenMsg with port number 0, -// rather than the actual port number. This means you can never open -// two different listeners with auto allocated ports. We work around -// this by trying explicit ports until we succeed. - -const openSSHPrefix = "OpenSSH_" - -var portRandomizer = rand.New(rand.NewSource(time.Now().UnixNano())) - -// isBrokenOpenSSHVersion returns true if the given version string -// specifies a version of OpenSSH that is known to have a bug in port -// forwarding. -func isBrokenOpenSSHVersion(versionStr string) bool { - i := strings.Index(versionStr, openSSHPrefix) - if i < 0 { - return false - } - i += len(openSSHPrefix) - j := i - for ; j < len(versionStr); j++ { - if versionStr[j] < '0' || versionStr[j] > '9' { - break - } - } - version, _ := strconv.Atoi(versionStr[i:j]) - return version < 6 -} - -// autoPortListenWorkaround simulates automatic port allocation by -// trying random ports repeatedly. -func (c *Client) autoPortListenWorkaround(laddr *net.TCPAddr) (net.Listener, error) { - var sshListener net.Listener - var err error - const tries = 10 - for i := 0; i < tries; i++ { - addr := *laddr - addr.Port = 1024 + portRandomizer.Intn(60000) - sshListener, err = c.ListenTCP(&addr) - if err == nil { - laddr.Port = addr.Port - return sshListener, err - } - } - return nil, fmt.Errorf("ssh: listen on random port failed after %d tries: %v", tries, err) -} - -// RFC 4254 7.1 -type channelForwardMsg struct { - addr string - rport uint32 -} - -// ListenTCP requests the remote peer open a listening socket -// on laddr. Incoming connections will be available by calling -// Accept on the returned net.Listener. -func (c *Client) ListenTCP(laddr *net.TCPAddr) (net.Listener, error) { - if laddr.Port == 0 && isBrokenOpenSSHVersion(string(c.ServerVersion())) { - return c.autoPortListenWorkaround(laddr) - } - - m := channelForwardMsg{ - laddr.IP.String(), - uint32(laddr.Port), - } - // send message - ok, resp, err := c.SendRequest("tcpip-forward", true, Marshal(&m)) - if err != nil { - return nil, err - } - if !ok { - return nil, errors.New("ssh: tcpip-forward request denied by peer") - } - - // If the original port was 0, then the remote side will - // supply a real port number in the response. - if laddr.Port == 0 { - var p struct { - Port uint32 - } - if err := Unmarshal(resp, &p); err != nil { - return nil, err - } - laddr.Port = int(p.Port) - } - - // Register this forward, using the port number we obtained. - ch := c.forwards.add(laddr) - - return &tcpListener{laddr, c, ch}, nil -} - -// forwardList stores a mapping between remote -// forward requests and the tcpListeners. -type forwardList struct { - sync.Mutex - entries []forwardEntry -} - -// forwardEntry represents an established mapping of a laddr on a -// remote ssh server to a channel connected to a tcpListener. -type forwardEntry struct { - laddr net.Addr - c chan forward -} - -// forward represents an incoming forwarded tcpip connection. The -// arguments to add/remove/lookup should be address as specified in -// the original forward-request. -type forward struct { - newCh NewChannel // the ssh client channel underlying this forward - raddr net.Addr // the raddr of the incoming connection -} - -func (l *forwardList) add(addr net.Addr) chan forward { - l.Lock() - defer l.Unlock() - f := forwardEntry{ - laddr: addr, - c: make(chan forward, 1), - } - l.entries = append(l.entries, f) - return f.c -} - -// See RFC 4254, section 7.2 -type forwardedTCPPayload struct { - Addr string - Port uint32 - OriginAddr string - OriginPort uint32 -} - -// parseTCPAddr parses the originating address from the remote into a *net.TCPAddr. -func parseTCPAddr(addr string, port uint32) (*net.TCPAddr, error) { - if port == 0 || port > 65535 { - return nil, fmt.Errorf("ssh: port number out of range: %d", port) - } - ip := net.ParseIP(string(addr)) - if ip == nil { - return nil, fmt.Errorf("ssh: cannot parse IP address %q", addr) - } - return &net.TCPAddr{IP: ip, Port: int(port)}, nil -} - -func (l *forwardList) handleChannels(in <-chan NewChannel) { - for ch := range in { - var ( - laddr net.Addr - raddr net.Addr - err error - ) - switch channelType := ch.ChannelType(); channelType { - case "forwarded-tcpip": - var payload forwardedTCPPayload - if err = Unmarshal(ch.ExtraData(), &payload); err != nil { - ch.Reject(ConnectionFailed, "could not parse forwarded-tcpip payload: "+err.Error()) - continue - } - - // RFC 4254 section 7.2 specifies that incoming - // addresses should list the address, in string - // format. It is implied that this should be an IP - // address, as it would be impossible to connect to it - // otherwise. - laddr, err = parseTCPAddr(payload.Addr, payload.Port) - if err != nil { - ch.Reject(ConnectionFailed, err.Error()) - continue - } - raddr, err = parseTCPAddr(payload.OriginAddr, payload.OriginPort) - if err != nil { - ch.Reject(ConnectionFailed, err.Error()) - continue - } - - case "forwarded-streamlocal@openssh.com": - var payload forwardedStreamLocalPayload - if err = Unmarshal(ch.ExtraData(), &payload); err != nil { - ch.Reject(ConnectionFailed, "could not parse forwarded-streamlocal@openssh.com payload: "+err.Error()) - continue - } - laddr = &net.UnixAddr{ - Name: payload.SocketPath, - Net: "unix", - } - raddr = &net.UnixAddr{ - Name: "@", - Net: "unix", - } - default: - panic(fmt.Errorf("ssh: unknown channel type %s", channelType)) - } - if ok := l.forward(laddr, raddr, ch); !ok { - // Section 7.2, implementations MUST reject spurious incoming - // connections. - ch.Reject(Prohibited, "no forward for address") - continue - } - - } -} - -// remove removes the forward entry, and the channel feeding its -// listener. -func (l *forwardList) remove(addr net.Addr) { - l.Lock() - defer l.Unlock() - for i, f := range l.entries { - if addr.Network() == f.laddr.Network() && addr.String() == f.laddr.String() { - l.entries = append(l.entries[:i], l.entries[i+1:]...) - close(f.c) - return - } - } -} - -// closeAll closes and clears all forwards. -func (l *forwardList) closeAll() { - l.Lock() - defer l.Unlock() - for _, f := range l.entries { - close(f.c) - } - l.entries = nil -} - -func (l *forwardList) forward(laddr, raddr net.Addr, ch NewChannel) bool { - l.Lock() - defer l.Unlock() - for _, f := range l.entries { - if laddr.Network() == f.laddr.Network() && laddr.String() == f.laddr.String() { - f.c <- forward{newCh: ch, raddr: raddr} - return true - } - } - return false -} - -type tcpListener struct { - laddr *net.TCPAddr - - conn *Client - in <-chan forward -} - -// Accept waits for and returns the next connection to the listener. -func (l *tcpListener) Accept() (net.Conn, error) { - s, ok := <-l.in - if !ok { - return nil, io.EOF - } - ch, incoming, err := s.newCh.Accept() - if err != nil { - return nil, err - } - go DiscardRequests(incoming) - - return &chanConn{ - Channel: ch, - laddr: l.laddr, - raddr: s.raddr, - }, nil -} - -// Close closes the listener. -func (l *tcpListener) Close() error { - m := channelForwardMsg{ - l.laddr.IP.String(), - uint32(l.laddr.Port), - } - - // this also closes the listener. - l.conn.forwards.remove(l.laddr) - ok, _, err := l.conn.SendRequest("cancel-tcpip-forward", true, Marshal(&m)) - if err == nil && !ok { - err = errors.New("ssh: cancel-tcpip-forward failed") - } - return err -} - -// Addr returns the listener's network address. -func (l *tcpListener) Addr() net.Addr { - return l.laddr -} - -// Dial initiates a connection to the addr from the remote host. -// The resulting connection has a zero LocalAddr() and RemoteAddr(). -func (c *Client) Dial(n, addr string) (net.Conn, error) { - var ch Channel - switch n { - case "tcp", "tcp4", "tcp6": - // Parse the address into host and numeric port. - host, portString, err := net.SplitHostPort(addr) - if err != nil { - return nil, err - } - port, err := strconv.ParseUint(portString, 10, 16) - if err != nil { - return nil, err - } - ch, err = c.dial(net.IPv4zero.String(), 0, host, int(port)) - if err != nil { - return nil, err - } - // Use a zero address for local and remote address. - zeroAddr := &net.TCPAddr{ - IP: net.IPv4zero, - Port: 0, - } - return &chanConn{ - Channel: ch, - laddr: zeroAddr, - raddr: zeroAddr, - }, nil - case "unix": - var err error - ch, err = c.dialStreamLocal(addr) - if err != nil { - return nil, err - } - return &chanConn{ - Channel: ch, - laddr: &net.UnixAddr{ - Name: "@", - Net: "unix", - }, - raddr: &net.UnixAddr{ - Name: addr, - Net: "unix", - }, - }, nil - default: - return nil, fmt.Errorf("ssh: unsupported protocol: %s", n) - } -} - -// DialTCP connects to the remote address raddr on the network net, -// which must be "tcp", "tcp4", or "tcp6". If laddr is not nil, it is used -// as the local address for the connection. -func (c *Client) DialTCP(n string, laddr, raddr *net.TCPAddr) (net.Conn, error) { - if laddr == nil { - laddr = &net.TCPAddr{ - IP: net.IPv4zero, - Port: 0, - } - } - ch, err := c.dial(laddr.IP.String(), laddr.Port, raddr.IP.String(), raddr.Port) - if err != nil { - return nil, err - } - return &chanConn{ - Channel: ch, - laddr: laddr, - raddr: raddr, - }, nil -} - -// RFC 4254 7.2 -type channelOpenDirectMsg struct { - raddr string - rport uint32 - laddr string - lport uint32 -} - -func (c *Client) dial(laddr string, lport int, raddr string, rport int) (Channel, error) { - msg := channelOpenDirectMsg{ - raddr: raddr, - rport: uint32(rport), - laddr: laddr, - lport: uint32(lport), - } - ch, in, err := c.OpenChannel("direct-tcpip", Marshal(&msg)) - if err != nil { - return nil, err - } - go DiscardRequests(in) - return ch, err -} - -type tcpChan struct { - Channel // the backing channel -} - -// chanConn fulfills the net.Conn interface without -// the tcpChan having to hold laddr or raddr directly. -type chanConn struct { - Channel - laddr, raddr net.Addr -} - -// LocalAddr returns the local network address. -func (t *chanConn) LocalAddr() net.Addr { - return t.laddr -} - -// RemoteAddr returns the remote network address. -func (t *chanConn) RemoteAddr() net.Addr { - return t.raddr -} - -// SetDeadline sets the read and write deadlines associated -// with the connection. -func (t *chanConn) SetDeadline(deadline time.Time) error { - if err := t.SetReadDeadline(deadline); err != nil { - return err - } - return t.SetWriteDeadline(deadline) -} - -// SetReadDeadline sets the read deadline. -// A zero value for t means Read will not time out. -// After the deadline, the error from Read will implement net.Error -// with Timeout() == true. -func (t *chanConn) SetReadDeadline(deadline time.Time) error { - // for compatibility with previous version, - // the error message contains "tcpChan" - return errors.New("ssh: tcpChan: deadline not supported") -} - -// SetWriteDeadline exists to satisfy the net.Conn interface -// but is not implemented by this type. It always returns an error. -func (t *chanConn) SetWriteDeadline(deadline time.Time) error { - return errors.New("ssh: tcpChan: deadline not supported") -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/tcpip_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/tcpip_test.go deleted file mode 100644 index f1265cb49..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/tcpip_test.go +++ /dev/null @@ -1,20 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "testing" -) - -func TestAutoPortListenBroken(t *testing.T) { - broken := "SSH-2.0-OpenSSH_5.9hh11" - works := "SSH-2.0-OpenSSH_6.1" - if !isBrokenOpenSSHVersion(broken) { - t.Errorf("version %q not marked as broken", broken) - } - if isBrokenOpenSSHVersion(works) { - t.Errorf("version %q marked as broken", works) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/terminal.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/terminal.go deleted file mode 100644 index 18379a935..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/terminal.go +++ /dev/null @@ -1,951 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package terminal - -import ( - "bytes" - "io" - "sync" - "unicode/utf8" -) - -// EscapeCodes contains escape sequences that can be written to the terminal in -// order to achieve different styles of text. -type EscapeCodes struct { - // Foreground colors - Black, Red, Green, Yellow, Blue, Magenta, Cyan, White []byte - - // Reset all attributes - Reset []byte -} - -var vt100EscapeCodes = EscapeCodes{ - Black: []byte{keyEscape, '[', '3', '0', 'm'}, - Red: []byte{keyEscape, '[', '3', '1', 'm'}, - Green: []byte{keyEscape, '[', '3', '2', 'm'}, - Yellow: []byte{keyEscape, '[', '3', '3', 'm'}, - Blue: []byte{keyEscape, '[', '3', '4', 'm'}, - Magenta: []byte{keyEscape, '[', '3', '5', 'm'}, - Cyan: []byte{keyEscape, '[', '3', '6', 'm'}, - White: []byte{keyEscape, '[', '3', '7', 'm'}, - - Reset: []byte{keyEscape, '[', '0', 'm'}, -} - -// Terminal contains the state for running a VT100 terminal that is capable of -// reading lines of input. -type Terminal struct { - // AutoCompleteCallback, if non-null, is called for each keypress with - // the full input line and the current position of the cursor (in - // bytes, as an index into |line|). If it returns ok=false, the key - // press is processed normally. Otherwise it returns a replacement line - // and the new cursor position. - AutoCompleteCallback func(line string, pos int, key rune) (newLine string, newPos int, ok bool) - - // Escape contains a pointer to the escape codes for this terminal. - // It's always a valid pointer, although the escape codes themselves - // may be empty if the terminal doesn't support them. - Escape *EscapeCodes - - // lock protects the terminal and the state in this object from - // concurrent processing of a key press and a Write() call. - lock sync.Mutex - - c io.ReadWriter - prompt []rune - - // line is the current line being entered. - line []rune - // pos is the logical position of the cursor in line - pos int - // echo is true if local echo is enabled - echo bool - // pasteActive is true iff there is a bracketed paste operation in - // progress. - pasteActive bool - - // cursorX contains the current X value of the cursor where the left - // edge is 0. cursorY contains the row number where the first row of - // the current line is 0. - cursorX, cursorY int - // maxLine is the greatest value of cursorY so far. - maxLine int - - termWidth, termHeight int - - // outBuf contains the terminal data to be sent. - outBuf []byte - // remainder contains the remainder of any partial key sequences after - // a read. It aliases into inBuf. - remainder []byte - inBuf [256]byte - - // history contains previously entered commands so that they can be - // accessed with the up and down keys. - history stRingBuffer - // historyIndex stores the currently accessed history entry, where zero - // means the immediately previous entry. - historyIndex int - // When navigating up and down the history it's possible to return to - // the incomplete, initial line. That value is stored in - // historyPending. - historyPending string -} - -// NewTerminal runs a VT100 terminal on the given ReadWriter. If the ReadWriter is -// a local terminal, that terminal must first have been put into raw mode. -// prompt is a string that is written at the start of each input line (i.e. -// "> "). -func NewTerminal(c io.ReadWriter, prompt string) *Terminal { - return &Terminal{ - Escape: &vt100EscapeCodes, - c: c, - prompt: []rune(prompt), - termWidth: 80, - termHeight: 24, - echo: true, - historyIndex: -1, - } -} - -const ( - keyCtrlD = 4 - keyCtrlU = 21 - keyEnter = '\r' - keyEscape = 27 - keyBackspace = 127 - keyUnknown = 0xd800 /* UTF-16 surrogate area */ + iota - keyUp - keyDown - keyLeft - keyRight - keyAltLeft - keyAltRight - keyHome - keyEnd - keyDeleteWord - keyDeleteLine - keyClearScreen - keyPasteStart - keyPasteEnd -) - -var ( - crlf = []byte{'\r', '\n'} - pasteStart = []byte{keyEscape, '[', '2', '0', '0', '~'} - pasteEnd = []byte{keyEscape, '[', '2', '0', '1', '~'} -) - -// bytesToKey tries to parse a key sequence from b. If successful, it returns -// the key and the remainder of the input. Otherwise it returns utf8.RuneError. -func bytesToKey(b []byte, pasteActive bool) (rune, []byte) { - if len(b) == 0 { - return utf8.RuneError, nil - } - - if !pasteActive { - switch b[0] { - case 1: // ^A - return keyHome, b[1:] - case 5: // ^E - return keyEnd, b[1:] - case 8: // ^H - return keyBackspace, b[1:] - case 11: // ^K - return keyDeleteLine, b[1:] - case 12: // ^L - return keyClearScreen, b[1:] - case 23: // ^W - return keyDeleteWord, b[1:] - } - } - - if b[0] != keyEscape { - if !utf8.FullRune(b) { - return utf8.RuneError, b - } - r, l := utf8.DecodeRune(b) - return r, b[l:] - } - - if !pasteActive && len(b) >= 3 && b[0] == keyEscape && b[1] == '[' { - switch b[2] { - case 'A': - return keyUp, b[3:] - case 'B': - return keyDown, b[3:] - case 'C': - return keyRight, b[3:] - case 'D': - return keyLeft, b[3:] - case 'H': - return keyHome, b[3:] - case 'F': - return keyEnd, b[3:] - } - } - - if !pasteActive && len(b) >= 6 && b[0] == keyEscape && b[1] == '[' && b[2] == '1' && b[3] == ';' && b[4] == '3' { - switch b[5] { - case 'C': - return keyAltRight, b[6:] - case 'D': - return keyAltLeft, b[6:] - } - } - - if !pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteStart) { - return keyPasteStart, b[6:] - } - - if pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteEnd) { - return keyPasteEnd, b[6:] - } - - // If we get here then we have a key that we don't recognise, or a - // partial sequence. It's not clear how one should find the end of a - // sequence without knowing them all, but it seems that [a-zA-Z~] only - // appears at the end of a sequence. - for i, c := range b[0:] { - if c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c == '~' { - return keyUnknown, b[i+1:] - } - } - - return utf8.RuneError, b -} - -// queue appends data to the end of t.outBuf -func (t *Terminal) queue(data []rune) { - t.outBuf = append(t.outBuf, []byte(string(data))...) -} - -var eraseUnderCursor = []rune{' ', keyEscape, '[', 'D'} -var space = []rune{' '} - -func isPrintable(key rune) bool { - isInSurrogateArea := key >= 0xd800 && key <= 0xdbff - return key >= 32 && !isInSurrogateArea -} - -// moveCursorToPos appends data to t.outBuf which will move the cursor to the -// given, logical position in the text. -func (t *Terminal) moveCursorToPos(pos int) { - if !t.echo { - return - } - - x := visualLength(t.prompt) + pos - y := x / t.termWidth - x = x % t.termWidth - - up := 0 - if y < t.cursorY { - up = t.cursorY - y - } - - down := 0 - if y > t.cursorY { - down = y - t.cursorY - } - - left := 0 - if x < t.cursorX { - left = t.cursorX - x - } - - right := 0 - if x > t.cursorX { - right = x - t.cursorX - } - - t.cursorX = x - t.cursorY = y - t.move(up, down, left, right) -} - -func (t *Terminal) move(up, down, left, right int) { - movement := make([]rune, 3*(up+down+left+right)) - m := movement - for i := 0; i < up; i++ { - m[0] = keyEscape - m[1] = '[' - m[2] = 'A' - m = m[3:] - } - for i := 0; i < down; i++ { - m[0] = keyEscape - m[1] = '[' - m[2] = 'B' - m = m[3:] - } - for i := 0; i < left; i++ { - m[0] = keyEscape - m[1] = '[' - m[2] = 'D' - m = m[3:] - } - for i := 0; i < right; i++ { - m[0] = keyEscape - m[1] = '[' - m[2] = 'C' - m = m[3:] - } - - t.queue(movement) -} - -func (t *Terminal) clearLineToRight() { - op := []rune{keyEscape, '[', 'K'} - t.queue(op) -} - -const maxLineLength = 4096 - -func (t *Terminal) setLine(newLine []rune, newPos int) { - if t.echo { - t.moveCursorToPos(0) - t.writeLine(newLine) - for i := len(newLine); i < len(t.line); i++ { - t.writeLine(space) - } - t.moveCursorToPos(newPos) - } - t.line = newLine - t.pos = newPos -} - -func (t *Terminal) advanceCursor(places int) { - t.cursorX += places - t.cursorY += t.cursorX / t.termWidth - if t.cursorY > t.maxLine { - t.maxLine = t.cursorY - } - t.cursorX = t.cursorX % t.termWidth - - if places > 0 && t.cursorX == 0 { - // Normally terminals will advance the current position - // when writing a character. But that doesn't happen - // for the last character in a line. However, when - // writing a character (except a new line) that causes - // a line wrap, the position will be advanced two - // places. - // - // So, if we are stopping at the end of a line, we - // need to write a newline so that our cursor can be - // advanced to the next line. - t.outBuf = append(t.outBuf, '\r', '\n') - } -} - -func (t *Terminal) eraseNPreviousChars(n int) { - if n == 0 { - return - } - - if t.pos < n { - n = t.pos - } - t.pos -= n - t.moveCursorToPos(t.pos) - - copy(t.line[t.pos:], t.line[n+t.pos:]) - t.line = t.line[:len(t.line)-n] - if t.echo { - t.writeLine(t.line[t.pos:]) - for i := 0; i < n; i++ { - t.queue(space) - } - t.advanceCursor(n) - t.moveCursorToPos(t.pos) - } -} - -// countToLeftWord returns then number of characters from the cursor to the -// start of the previous word. -func (t *Terminal) countToLeftWord() int { - if t.pos == 0 { - return 0 - } - - pos := t.pos - 1 - for pos > 0 { - if t.line[pos] != ' ' { - break - } - pos-- - } - for pos > 0 { - if t.line[pos] == ' ' { - pos++ - break - } - pos-- - } - - return t.pos - pos -} - -// countToRightWord returns then number of characters from the cursor to the -// start of the next word. -func (t *Terminal) countToRightWord() int { - pos := t.pos - for pos < len(t.line) { - if t.line[pos] == ' ' { - break - } - pos++ - } - for pos < len(t.line) { - if t.line[pos] != ' ' { - break - } - pos++ - } - return pos - t.pos -} - -// visualLength returns the number of visible glyphs in s. -func visualLength(runes []rune) int { - inEscapeSeq := false - length := 0 - - for _, r := range runes { - switch { - case inEscapeSeq: - if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') { - inEscapeSeq = false - } - case r == '\x1b': - inEscapeSeq = true - default: - length++ - } - } - - return length -} - -// handleKey processes the given key and, optionally, returns a line of text -// that the user has entered. -func (t *Terminal) handleKey(key rune) (line string, ok bool) { - if t.pasteActive && key != keyEnter { - t.addKeyToLine(key) - return - } - - switch key { - case keyBackspace: - if t.pos == 0 { - return - } - t.eraseNPreviousChars(1) - case keyAltLeft: - // move left by a word. - t.pos -= t.countToLeftWord() - t.moveCursorToPos(t.pos) - case keyAltRight: - // move right by a word. - t.pos += t.countToRightWord() - t.moveCursorToPos(t.pos) - case keyLeft: - if t.pos == 0 { - return - } - t.pos-- - t.moveCursorToPos(t.pos) - case keyRight: - if t.pos == len(t.line) { - return - } - t.pos++ - t.moveCursorToPos(t.pos) - case keyHome: - if t.pos == 0 { - return - } - t.pos = 0 - t.moveCursorToPos(t.pos) - case keyEnd: - if t.pos == len(t.line) { - return - } - t.pos = len(t.line) - t.moveCursorToPos(t.pos) - case keyUp: - entry, ok := t.history.NthPreviousEntry(t.historyIndex + 1) - if !ok { - return "", false - } - if t.historyIndex == -1 { - t.historyPending = string(t.line) - } - t.historyIndex++ - runes := []rune(entry) - t.setLine(runes, len(runes)) - case keyDown: - switch t.historyIndex { - case -1: - return - case 0: - runes := []rune(t.historyPending) - t.setLine(runes, len(runes)) - t.historyIndex-- - default: - entry, ok := t.history.NthPreviousEntry(t.historyIndex - 1) - if ok { - t.historyIndex-- - runes := []rune(entry) - t.setLine(runes, len(runes)) - } - } - case keyEnter: - t.moveCursorToPos(len(t.line)) - t.queue([]rune("\r\n")) - line = string(t.line) - ok = true - t.line = t.line[:0] - t.pos = 0 - t.cursorX = 0 - t.cursorY = 0 - t.maxLine = 0 - case keyDeleteWord: - // Delete zero or more spaces and then one or more characters. - t.eraseNPreviousChars(t.countToLeftWord()) - case keyDeleteLine: - // Delete everything from the current cursor position to the - // end of line. - for i := t.pos; i < len(t.line); i++ { - t.queue(space) - t.advanceCursor(1) - } - t.line = t.line[:t.pos] - t.moveCursorToPos(t.pos) - case keyCtrlD: - // Erase the character under the current position. - // The EOF case when the line is empty is handled in - // readLine(). - if t.pos < len(t.line) { - t.pos++ - t.eraseNPreviousChars(1) - } - case keyCtrlU: - t.eraseNPreviousChars(t.pos) - case keyClearScreen: - // Erases the screen and moves the cursor to the home position. - t.queue([]rune("\x1b[2J\x1b[H")) - t.queue(t.prompt) - t.cursorX, t.cursorY = 0, 0 - t.advanceCursor(visualLength(t.prompt)) - t.setLine(t.line, t.pos) - default: - if t.AutoCompleteCallback != nil { - prefix := string(t.line[:t.pos]) - suffix := string(t.line[t.pos:]) - - t.lock.Unlock() - newLine, newPos, completeOk := t.AutoCompleteCallback(prefix+suffix, len(prefix), key) - t.lock.Lock() - - if completeOk { - t.setLine([]rune(newLine), utf8.RuneCount([]byte(newLine)[:newPos])) - return - } - } - if !isPrintable(key) { - return - } - if len(t.line) == maxLineLength { - return - } - t.addKeyToLine(key) - } - return -} - -// addKeyToLine inserts the given key at the current position in the current -// line. -func (t *Terminal) addKeyToLine(key rune) { - if len(t.line) == cap(t.line) { - newLine := make([]rune, len(t.line), 2*(1+len(t.line))) - copy(newLine, t.line) - t.line = newLine - } - t.line = t.line[:len(t.line)+1] - copy(t.line[t.pos+1:], t.line[t.pos:]) - t.line[t.pos] = key - if t.echo { - t.writeLine(t.line[t.pos:]) - } - t.pos++ - t.moveCursorToPos(t.pos) -} - -func (t *Terminal) writeLine(line []rune) { - for len(line) != 0 { - remainingOnLine := t.termWidth - t.cursorX - todo := len(line) - if todo > remainingOnLine { - todo = remainingOnLine - } - t.queue(line[:todo]) - t.advanceCursor(visualLength(line[:todo])) - line = line[todo:] - } -} - -// writeWithCRLF writes buf to w but replaces all occurrences of \n with \r\n. -func writeWithCRLF(w io.Writer, buf []byte) (n int, err error) { - for len(buf) > 0 { - i := bytes.IndexByte(buf, '\n') - todo := len(buf) - if i >= 0 { - todo = i - } - - var nn int - nn, err = w.Write(buf[:todo]) - n += nn - if err != nil { - return n, err - } - buf = buf[todo:] - - if i >= 0 { - if _, err = w.Write(crlf); err != nil { - return n, err - } - n += 1 - buf = buf[1:] - } - } - - return n, nil -} - -func (t *Terminal) Write(buf []byte) (n int, err error) { - t.lock.Lock() - defer t.lock.Unlock() - - if t.cursorX == 0 && t.cursorY == 0 { - // This is the easy case: there's nothing on the screen that we - // have to move out of the way. - return writeWithCRLF(t.c, buf) - } - - // We have a prompt and possibly user input on the screen. We - // have to clear it first. - t.move(0 /* up */, 0 /* down */, t.cursorX /* left */, 0 /* right */) - t.cursorX = 0 - t.clearLineToRight() - - for t.cursorY > 0 { - t.move(1 /* up */, 0, 0, 0) - t.cursorY-- - t.clearLineToRight() - } - - if _, err = t.c.Write(t.outBuf); err != nil { - return - } - t.outBuf = t.outBuf[:0] - - if n, err = writeWithCRLF(t.c, buf); err != nil { - return - } - - t.writeLine(t.prompt) - if t.echo { - t.writeLine(t.line) - } - - t.moveCursorToPos(t.pos) - - if _, err = t.c.Write(t.outBuf); err != nil { - return - } - t.outBuf = t.outBuf[:0] - return -} - -// ReadPassword temporarily changes the prompt and reads a password, without -// echo, from the terminal. -func (t *Terminal) ReadPassword(prompt string) (line string, err error) { - t.lock.Lock() - defer t.lock.Unlock() - - oldPrompt := t.prompt - t.prompt = []rune(prompt) - t.echo = false - - line, err = t.readLine() - - t.prompt = oldPrompt - t.echo = true - - return -} - -// ReadLine returns a line of input from the terminal. -func (t *Terminal) ReadLine() (line string, err error) { - t.lock.Lock() - defer t.lock.Unlock() - - return t.readLine() -} - -func (t *Terminal) readLine() (line string, err error) { - // t.lock must be held at this point - - if t.cursorX == 0 && t.cursorY == 0 { - t.writeLine(t.prompt) - t.c.Write(t.outBuf) - t.outBuf = t.outBuf[:0] - } - - lineIsPasted := t.pasteActive - - for { - rest := t.remainder - lineOk := false - for !lineOk { - var key rune - key, rest = bytesToKey(rest, t.pasteActive) - if key == utf8.RuneError { - break - } - if !t.pasteActive { - if key == keyCtrlD { - if len(t.line) == 0 { - return "", io.EOF - } - } - if key == keyPasteStart { - t.pasteActive = true - if len(t.line) == 0 { - lineIsPasted = true - } - continue - } - } else if key == keyPasteEnd { - t.pasteActive = false - continue - } - if !t.pasteActive { - lineIsPasted = false - } - line, lineOk = t.handleKey(key) - } - if len(rest) > 0 { - n := copy(t.inBuf[:], rest) - t.remainder = t.inBuf[:n] - } else { - t.remainder = nil - } - t.c.Write(t.outBuf) - t.outBuf = t.outBuf[:0] - if lineOk { - if t.echo { - t.historyIndex = -1 - t.history.Add(line) - } - if lineIsPasted { - err = ErrPasteIndicator - } - return - } - - // t.remainder is a slice at the beginning of t.inBuf - // containing a partial key sequence - readBuf := t.inBuf[len(t.remainder):] - var n int - - t.lock.Unlock() - n, err = t.c.Read(readBuf) - t.lock.Lock() - - if err != nil { - return - } - - t.remainder = t.inBuf[:n+len(t.remainder)] - } -} - -// SetPrompt sets the prompt to be used when reading subsequent lines. -func (t *Terminal) SetPrompt(prompt string) { - t.lock.Lock() - defer t.lock.Unlock() - - t.prompt = []rune(prompt) -} - -func (t *Terminal) clearAndRepaintLinePlusNPrevious(numPrevLines int) { - // Move cursor to column zero at the start of the line. - t.move(t.cursorY, 0, t.cursorX, 0) - t.cursorX, t.cursorY = 0, 0 - t.clearLineToRight() - for t.cursorY < numPrevLines { - // Move down a line - t.move(0, 1, 0, 0) - t.cursorY++ - t.clearLineToRight() - } - // Move back to beginning. - t.move(t.cursorY, 0, 0, 0) - t.cursorX, t.cursorY = 0, 0 - - t.queue(t.prompt) - t.advanceCursor(visualLength(t.prompt)) - t.writeLine(t.line) - t.moveCursorToPos(t.pos) -} - -func (t *Terminal) SetSize(width, height int) error { - t.lock.Lock() - defer t.lock.Unlock() - - if width == 0 { - width = 1 - } - - oldWidth := t.termWidth - t.termWidth, t.termHeight = width, height - - switch { - case width == oldWidth: - // If the width didn't change then nothing else needs to be - // done. - return nil - case len(t.line) == 0 && t.cursorX == 0 && t.cursorY == 0: - // If there is nothing on current line and no prompt printed, - // just do nothing - return nil - case width < oldWidth: - // Some terminals (e.g. xterm) will truncate lines that were - // too long when shinking. Others, (e.g. gnome-terminal) will - // attempt to wrap them. For the former, repainting t.maxLine - // works great, but that behaviour goes badly wrong in the case - // of the latter because they have doubled every full line. - - // We assume that we are working on a terminal that wraps lines - // and adjust the cursor position based on every previous line - // wrapping and turning into two. This causes the prompt on - // xterms to move upwards, which isn't great, but it avoids a - // huge mess with gnome-terminal. - if t.cursorX >= t.termWidth { - t.cursorX = t.termWidth - 1 - } - t.cursorY *= 2 - t.clearAndRepaintLinePlusNPrevious(t.maxLine * 2) - case width > oldWidth: - // If the terminal expands then our position calculations will - // be wrong in the future because we think the cursor is - // |t.pos| chars into the string, but there will be a gap at - // the end of any wrapped line. - // - // But the position will actually be correct until we move, so - // we can move back to the beginning and repaint everything. - t.clearAndRepaintLinePlusNPrevious(t.maxLine) - } - - _, err := t.c.Write(t.outBuf) - t.outBuf = t.outBuf[:0] - return err -} - -type pasteIndicatorError struct{} - -func (pasteIndicatorError) Error() string { - return "terminal: ErrPasteIndicator not correctly handled" -} - -// ErrPasteIndicator may be returned from ReadLine as the error, in addition -// to valid line data. It indicates that bracketed paste mode is enabled and -// that the returned line consists only of pasted data. Programs may wish to -// interpret pasted data more literally than typed data. -var ErrPasteIndicator = pasteIndicatorError{} - -// SetBracketedPasteMode requests that the terminal bracket paste operations -// with markers. Not all terminals support this but, if it is supported, then -// enabling this mode will stop any autocomplete callback from running due to -// pastes. Additionally, any lines that are completely pasted will be returned -// from ReadLine with the error set to ErrPasteIndicator. -func (t *Terminal) SetBracketedPasteMode(on bool) { - if on { - io.WriteString(t.c, "\x1b[?2004h") - } else { - io.WriteString(t.c, "\x1b[?2004l") - } -} - -// stRingBuffer is a ring buffer of strings. -type stRingBuffer struct { - // entries contains max elements. - entries []string - max int - // head contains the index of the element most recently added to the ring. - head int - // size contains the number of elements in the ring. - size int -} - -func (s *stRingBuffer) Add(a string) { - if s.entries == nil { - const defaultNumEntries = 100 - s.entries = make([]string, defaultNumEntries) - s.max = defaultNumEntries - } - - s.head = (s.head + 1) % s.max - s.entries[s.head] = a - if s.size < s.max { - s.size++ - } -} - -// NthPreviousEntry returns the value passed to the nth previous call to Add. -// If n is zero then the immediately prior value is returned, if one, then the -// next most recent, and so on. If such an element doesn't exist then ok is -// false. -func (s *stRingBuffer) NthPreviousEntry(n int) (value string, ok bool) { - if n >= s.size { - return "", false - } - index := s.head - n - if index < 0 { - index += s.max - } - return s.entries[index], true -} - -// readPasswordLine reads from reader until it finds \n or io.EOF. -// The slice returned does not include the \n. -// readPasswordLine also ignores any \r it finds. -func readPasswordLine(reader io.Reader) ([]byte, error) { - var buf [1]byte - var ret []byte - - for { - n, err := reader.Read(buf[:]) - if n > 0 { - switch buf[0] { - case '\n': - return ret, nil - case '\r': - // remove \r from passwords on Windows - default: - ret = append(ret, buf[0]) - } - continue - } - if err != nil { - if err == io.EOF && len(ret) > 0 { - return ret, nil - } - return ret, err - } - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/terminal_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/terminal_test.go deleted file mode 100644 index 901c72ab3..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/terminal_test.go +++ /dev/null @@ -1,350 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package terminal - -import ( - "bytes" - "io" - "os" - "testing" -) - -type MockTerminal struct { - toSend []byte - bytesPerRead int - received []byte -} - -func (c *MockTerminal) Read(data []byte) (n int, err error) { - n = len(data) - if n == 0 { - return - } - if n > len(c.toSend) { - n = len(c.toSend) - } - if n == 0 { - return 0, io.EOF - } - if c.bytesPerRead > 0 && n > c.bytesPerRead { - n = c.bytesPerRead - } - copy(data, c.toSend[:n]) - c.toSend = c.toSend[n:] - return -} - -func (c *MockTerminal) Write(data []byte) (n int, err error) { - c.received = append(c.received, data...) - return len(data), nil -} - -func TestClose(t *testing.T) { - c := &MockTerminal{} - ss := NewTerminal(c, "> ") - line, err := ss.ReadLine() - if line != "" { - t.Errorf("Expected empty line but got: %s", line) - } - if err != io.EOF { - t.Errorf("Error should have been EOF but got: %s", err) - } -} - -var keyPressTests = []struct { - in string - line string - err error - throwAwayLines int -}{ - { - err: io.EOF, - }, - { - in: "\r", - line: "", - }, - { - in: "foo\r", - line: "foo", - }, - { - in: "a\x1b[Cb\r", // right - line: "ab", - }, - { - in: "a\x1b[Db\r", // left - line: "ba", - }, - { - in: "a\177b\r", // backspace - line: "b", - }, - { - in: "\x1b[A\r", // up - }, - { - in: "\x1b[B\r", // down - }, - { - in: "line\x1b[A\x1b[B\r", // up then down - line: "line", - }, - { - in: "line1\rline2\x1b[A\r", // recall previous line. - line: "line1", - throwAwayLines: 1, - }, - { - // recall two previous lines and append. - in: "line1\rline2\rline3\x1b[A\x1b[Axxx\r", - line: "line1xxx", - throwAwayLines: 2, - }, - { - // Ctrl-A to move to beginning of line followed by ^K to kill - // line. - in: "a b \001\013\r", - line: "", - }, - { - // Ctrl-A to move to beginning of line, Ctrl-E to move to end, - // finally ^K to kill nothing. - in: "a b \001\005\013\r", - line: "a b ", - }, - { - in: "\027\r", - line: "", - }, - { - in: "a\027\r", - line: "", - }, - { - in: "a \027\r", - line: "", - }, - { - in: "a b\027\r", - line: "a ", - }, - { - in: "a b \027\r", - line: "a ", - }, - { - in: "one two thr\x1b[D\027\r", - line: "one two r", - }, - { - in: "\013\r", - line: "", - }, - { - in: "a\013\r", - line: "a", - }, - { - in: "ab\x1b[D\013\r", - line: "a", - }, - { - in: "Ξεσκεπάζω\r", - line: "Ξεσκεπάζω", - }, - { - in: "£\r\x1b[A\177\r", // non-ASCII char, enter, up, backspace. - line: "", - throwAwayLines: 1, - }, - { - in: "£\r££\x1b[A\x1b[B\177\r", // non-ASCII char, enter, 2x non-ASCII, up, down, backspace, enter. - line: "£", - throwAwayLines: 1, - }, - { - // Ctrl-D at the end of the line should be ignored. - in: "a\004\r", - line: "a", - }, - { - // a, b, left, Ctrl-D should erase the b. - in: "ab\x1b[D\004\r", - line: "a", - }, - { - // a, b, c, d, left, left, ^U should erase to the beginning of - // the line. - in: "abcd\x1b[D\x1b[D\025\r", - line: "cd", - }, - { - // Bracketed paste mode: control sequences should be returned - // verbatim in paste mode. - in: "abc\x1b[200~de\177f\x1b[201~\177\r", - line: "abcde\177", - }, - { - // Enter in bracketed paste mode should still work. - in: "abc\x1b[200~d\refg\x1b[201~h\r", - line: "efgh", - throwAwayLines: 1, - }, - { - // Lines consisting entirely of pasted data should be indicated as such. - in: "\x1b[200~a\r", - line: "a", - err: ErrPasteIndicator, - }, -} - -func TestKeyPresses(t *testing.T) { - for i, test := range keyPressTests { - for j := 1; j < len(test.in); j++ { - c := &MockTerminal{ - toSend: []byte(test.in), - bytesPerRead: j, - } - ss := NewTerminal(c, "> ") - for k := 0; k < test.throwAwayLines; k++ { - _, err := ss.ReadLine() - if err != nil { - t.Errorf("Throwaway line %d from test %d resulted in error: %s", k, i, err) - } - } - line, err := ss.ReadLine() - if line != test.line { - t.Errorf("Line resulting from test %d (%d bytes per read) was '%s', expected '%s'", i, j, line, test.line) - break - } - if err != test.err { - t.Errorf("Error resulting from test %d (%d bytes per read) was '%v', expected '%v'", i, j, err, test.err) - break - } - } - } -} - -func TestPasswordNotSaved(t *testing.T) { - c := &MockTerminal{ - toSend: []byte("password\r\x1b[A\r"), - bytesPerRead: 1, - } - ss := NewTerminal(c, "> ") - pw, _ := ss.ReadPassword("> ") - if pw != "password" { - t.Fatalf("failed to read password, got %s", pw) - } - line, _ := ss.ReadLine() - if len(line) > 0 { - t.Fatalf("password was saved in history") - } -} - -var setSizeTests = []struct { - width, height int -}{ - {40, 13}, - {80, 24}, - {132, 43}, -} - -func TestTerminalSetSize(t *testing.T) { - for _, setSize := range setSizeTests { - c := &MockTerminal{ - toSend: []byte("password\r\x1b[A\r"), - bytesPerRead: 1, - } - ss := NewTerminal(c, "> ") - ss.SetSize(setSize.width, setSize.height) - pw, _ := ss.ReadPassword("Password: ") - if pw != "password" { - t.Fatalf("failed to read password, got %s", pw) - } - if string(c.received) != "Password: \r\n" { - t.Errorf("failed to set the temporary prompt expected %q, got %q", "Password: ", c.received) - } - } -} - -func TestReadPasswordLineEnd(t *testing.T) { - var tests = []struct { - input string - want string - }{ - {"\n", ""}, - {"\r\n", ""}, - {"test\r\n", "test"}, - {"testtesttesttes\n", "testtesttesttes"}, - {"testtesttesttes\r\n", "testtesttesttes"}, - {"testtesttesttesttest\n", "testtesttesttesttest"}, - {"testtesttesttesttest\r\n", "testtesttesttesttest"}, - } - for _, test := range tests { - buf := new(bytes.Buffer) - if _, err := buf.WriteString(test.input); err != nil { - t.Fatal(err) - } - - have, err := readPasswordLine(buf) - if err != nil { - t.Errorf("readPasswordLine(%q) failed: %v", test.input, err) - continue - } - if string(have) != test.want { - t.Errorf("readPasswordLine(%q) returns %q, but %q is expected", test.input, string(have), test.want) - continue - } - - if _, err = buf.WriteString(test.input); err != nil { - t.Fatal(err) - } - have, err = readPasswordLine(buf) - if err != nil { - t.Errorf("readPasswordLine(%q) failed: %v", test.input, err) - continue - } - if string(have) != test.want { - t.Errorf("readPasswordLine(%q) returns %q, but %q is expected", test.input, string(have), test.want) - continue - } - } -} - -func TestMakeRawState(t *testing.T) { - fd := int(os.Stdout.Fd()) - if !IsTerminal(fd) { - t.Skip("stdout is not a terminal; skipping test") - } - - st, err := GetState(fd) - if err != nil { - t.Fatalf("failed to get terminal state from GetState: %s", err) - } - defer Restore(fd, st) - raw, err := MakeRaw(fd) - if err != nil { - t.Fatalf("failed to get terminal state from MakeRaw: %s", err) - } - - if *st != *raw { - t.Errorf("states do not match; was %v, expected %v", raw, st) - } -} - -func TestOutputNewlines(t *testing.T) { - // \n should be changed to \r\n in terminal output. - buf := new(bytes.Buffer) - term := NewTerminal(buf, ">") - - term.Write([]byte("1\n2\n")) - output := string(buf.Bytes()) - const expected = "1\r\n2\r\n" - - if output != expected { - t.Errorf("incorrect output: was %q, expected %q", output, expected) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util.go deleted file mode 100644 index 02dad484e..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util.go +++ /dev/null @@ -1,116 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd - -// Package terminal provides support functions for dealing with terminals, as -// commonly found on UNIX systems. -// -// Putting a terminal into raw mode is the most common requirement: -// -// oldState, err := terminal.MakeRaw(0) -// if err != nil { -// panic(err) -// } -// defer terminal.Restore(0, oldState) -package terminal // import "golang.org/x/crypto/ssh/terminal" - -import ( - "golang.org/x/sys/unix" -) - -// State contains the state of a terminal. -type State struct { - termios unix.Termios -} - -// IsTerminal returns true if the given file descriptor is a terminal. -func IsTerminal(fd int) bool { - _, err := unix.IoctlGetTermios(fd, ioctlReadTermios) - return err == nil -} - -// MakeRaw put the terminal connected to the given file descriptor into raw -// mode and returns the previous state of the terminal so that it can be -// restored. -func MakeRaw(fd int) (*State, error) { - termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios) - if err != nil { - return nil, err - } - - oldState := State{termios: *termios} - - // This attempts to replicate the behaviour documented for cfmakeraw in - // the termios(3) manpage. - termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON - termios.Oflag &^= unix.OPOST - termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN - termios.Cflag &^= unix.CSIZE | unix.PARENB - termios.Cflag |= unix.CS8 - termios.Cc[unix.VMIN] = 1 - termios.Cc[unix.VTIME] = 0 - if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, termios); err != nil { - return nil, err - } - - return &oldState, nil -} - -// GetState returns the current state of a terminal which may be useful to -// restore the terminal after a signal. -func GetState(fd int) (*State, error) { - termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios) - if err != nil { - return nil, err - } - - return &State{termios: *termios}, nil -} - -// Restore restores the terminal connected to the given file descriptor to a -// previous state. -func Restore(fd int, state *State) error { - return unix.IoctlSetTermios(fd, ioctlWriteTermios, &state.termios) -} - -// GetSize returns the dimensions of the given terminal. -func GetSize(fd int) (width, height int, err error) { - ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ) - if err != nil { - return -1, -1, err - } - return int(ws.Col), int(ws.Row), nil -} - -// passwordReader is an io.Reader that reads from a specific file descriptor. -type passwordReader int - -func (r passwordReader) Read(buf []byte) (int, error) { - return unix.Read(int(r), buf) -} - -// ReadPassword reads a line of input from a terminal without local echo. This -// is commonly used for inputting passwords and other sensitive data. The slice -// returned does not include the \n. -func ReadPassword(fd int) ([]byte, error) { - termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios) - if err != nil { - return nil, err - } - - newState := *termios - newState.Lflag &^= unix.ECHO - newState.Lflag |= unix.ICANON | unix.ISIG - newState.Iflag |= unix.ICRNL - if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, &newState); err != nil { - return nil, err - } - - defer func() { - unix.IoctlSetTermios(fd, ioctlWriteTermios, termios) - }() - - return readPasswordLine(passwordReader(fd)) -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go deleted file mode 100644 index cb23a5904..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go +++ /dev/null @@ -1,12 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin dragonfly freebsd netbsd openbsd - -package terminal - -import "golang.org/x/sys/unix" - -const ioctlReadTermios = unix.TIOCGETA -const ioctlWriteTermios = unix.TIOCSETA diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_linux.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_linux.go deleted file mode 100644 index 5fadfe8a1..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_linux.go +++ /dev/null @@ -1,10 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package terminal - -import "golang.org/x/sys/unix" - -const ioctlReadTermios = unix.TCGETS -const ioctlWriteTermios = unix.TCSETS diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go deleted file mode 100644 index 799f049f0..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go +++ /dev/null @@ -1,58 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package terminal provides support functions for dealing with terminals, as -// commonly found on UNIX systems. -// -// Putting a terminal into raw mode is the most common requirement: -// -// oldState, err := terminal.MakeRaw(0) -// if err != nil { -// panic(err) -// } -// defer terminal.Restore(0, oldState) -package terminal - -import ( - "fmt" - "runtime" -) - -type State struct{} - -// IsTerminal returns true if the given file descriptor is a terminal. -func IsTerminal(fd int) bool { - return false -} - -// MakeRaw put the terminal connected to the given file descriptor into raw -// mode and returns the previous state of the terminal so that it can be -// restored. -func MakeRaw(fd int) (*State, error) { - return nil, fmt.Errorf("terminal: MakeRaw not implemented on %s/%s", runtime.GOOS, runtime.GOARCH) -} - -// GetState returns the current state of a terminal which may be useful to -// restore the terminal after a signal. -func GetState(fd int) (*State, error) { - return nil, fmt.Errorf("terminal: GetState not implemented on %s/%s", runtime.GOOS, runtime.GOARCH) -} - -// Restore restores the terminal connected to the given file descriptor to a -// previous state. -func Restore(fd int, state *State) error { - return fmt.Errorf("terminal: Restore not implemented on %s/%s", runtime.GOOS, runtime.GOARCH) -} - -// GetSize returns the dimensions of the given terminal. -func GetSize(fd int) (width, height int, err error) { - return 0, 0, fmt.Errorf("terminal: GetSize not implemented on %s/%s", runtime.GOOS, runtime.GOARCH) -} - -// ReadPassword reads a line of input from a terminal without local echo. This -// is commonly used for inputting passwords and other sensitive data. The slice -// returned does not include the \n. -func ReadPassword(fd int) ([]byte, error) { - return nil, fmt.Errorf("terminal: ReadPassword not implemented on %s/%s", runtime.GOOS, runtime.GOARCH) -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go deleted file mode 100644 index a2e1b57dc..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go +++ /dev/null @@ -1,128 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build solaris - -package terminal // import "golang.org/x/crypto/ssh/terminal" - -import ( - "golang.org/x/sys/unix" - "io" - "syscall" -) - -// State contains the state of a terminal. -type State struct { - state *unix.Termios -} - -// IsTerminal returns true if the given file descriptor is a terminal. -func IsTerminal(fd int) bool { - _, err := unix.IoctlGetTermio(fd, unix.TCGETA) - return err == nil -} - -// ReadPassword reads a line of input from a terminal without local echo. This -// is commonly used for inputting passwords and other sensitive data. The slice -// returned does not include the \n. -func ReadPassword(fd int) ([]byte, error) { - // see also: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libast/common/uwin/getpass.c - val, err := unix.IoctlGetTermios(fd, unix.TCGETS) - if err != nil { - return nil, err - } - oldState := *val - - newState := oldState - newState.Lflag &^= syscall.ECHO - newState.Lflag |= syscall.ICANON | syscall.ISIG - newState.Iflag |= syscall.ICRNL - err = unix.IoctlSetTermios(fd, unix.TCSETS, &newState) - if err != nil { - return nil, err - } - - defer unix.IoctlSetTermios(fd, unix.TCSETS, &oldState) - - var buf [16]byte - var ret []byte - for { - n, err := syscall.Read(fd, buf[:]) - if err != nil { - return nil, err - } - if n == 0 { - if len(ret) == 0 { - return nil, io.EOF - } - break - } - if buf[n-1] == '\n' { - n-- - } - ret = append(ret, buf[:n]...) - if n < len(buf) { - break - } - } - - return ret, nil -} - -// MakeRaw puts the terminal connected to the given file descriptor into raw -// mode and returns the previous state of the terminal so that it can be -// restored. -// see http://cr.illumos.org/~webrev/andy_js/1060/ -func MakeRaw(fd int) (*State, error) { - oldTermiosPtr, err := unix.IoctlGetTermios(fd, unix.TCGETS) - if err != nil { - return nil, err - } - oldTermios := *oldTermiosPtr - - newTermios := oldTermios - newTermios.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON - newTermios.Oflag &^= syscall.OPOST - newTermios.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN - newTermios.Cflag &^= syscall.CSIZE | syscall.PARENB - newTermios.Cflag |= syscall.CS8 - newTermios.Cc[unix.VMIN] = 1 - newTermios.Cc[unix.VTIME] = 0 - - if err := unix.IoctlSetTermios(fd, unix.TCSETS, &newTermios); err != nil { - return nil, err - } - - return &State{ - state: oldTermiosPtr, - }, nil -} - -// Restore restores the terminal connected to the given file descriptor to a -// previous state. -func Restore(fd int, oldState *State) error { - return unix.IoctlSetTermios(fd, unix.TCSETS, oldState.state) -} - -// GetState returns the current state of a terminal which may be useful to -// restore the terminal after a signal. -func GetState(fd int) (*State, error) { - oldTermiosPtr, err := unix.IoctlGetTermios(fd, unix.TCGETS) - if err != nil { - return nil, err - } - - return &State{ - state: oldTermiosPtr, - }, nil -} - -// GetSize returns the dimensions of the given terminal. -func GetSize(fd int) (width, height int, err error) { - ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ) - if err != nil { - return 0, 0, err - } - return int(ws.Col), int(ws.Row), nil -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go deleted file mode 100644 index 92944f3b4..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go +++ /dev/null @@ -1,97 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build windows - -// Package terminal provides support functions for dealing with terminals, as -// commonly found on UNIX systems. -// -// Putting a terminal into raw mode is the most common requirement: -// -// oldState, err := terminal.MakeRaw(0) -// if err != nil { -// panic(err) -// } -// defer terminal.Restore(0, oldState) -package terminal - -import ( - "os" - - "golang.org/x/sys/windows" -) - -type State struct { - mode uint32 -} - -// IsTerminal returns true if the given file descriptor is a terminal. -func IsTerminal(fd int) bool { - var st uint32 - err := windows.GetConsoleMode(windows.Handle(fd), &st) - return err == nil -} - -// MakeRaw put the terminal connected to the given file descriptor into raw -// mode and returns the previous state of the terminal so that it can be -// restored. -func MakeRaw(fd int) (*State, error) { - var st uint32 - if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil { - return nil, err - } - raw := st &^ (windows.ENABLE_ECHO_INPUT | windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT) - if err := windows.SetConsoleMode(windows.Handle(fd), raw); err != nil { - return nil, err - } - return &State{st}, nil -} - -// GetState returns the current state of a terminal which may be useful to -// restore the terminal after a signal. -func GetState(fd int) (*State, error) { - var st uint32 - if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil { - return nil, err - } - return &State{st}, nil -} - -// Restore restores the terminal connected to the given file descriptor to a -// previous state. -func Restore(fd int, state *State) error { - return windows.SetConsoleMode(windows.Handle(fd), state.mode) -} - -// GetSize returns the dimensions of the given terminal. -func GetSize(fd int) (width, height int, err error) { - var info windows.ConsoleScreenBufferInfo - if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil { - return 0, 0, err - } - return int(info.Size.X), int(info.Size.Y), nil -} - -// ReadPassword reads a line of input from a terminal without local echo. This -// is commonly used for inputting passwords and other sensitive data. The slice -// returned does not include the \n. -func ReadPassword(fd int) ([]byte, error) { - var st uint32 - if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil { - return nil, err - } - old := st - - st &^= (windows.ENABLE_ECHO_INPUT) - st |= (windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT) - if err := windows.SetConsoleMode(windows.Handle(fd), st); err != nil { - return nil, err - } - - defer func() { - windows.SetConsoleMode(windows.Handle(fd), old) - }() - - return readPasswordLine(os.NewFile(uintptr(fd), "stdin")) -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/agent_unix_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/agent_unix_test.go deleted file mode 100644 index f481253c9..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/agent_unix_test.go +++ /dev/null @@ -1,59 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin dragonfly freebsd linux netbsd openbsd - -package test - -import ( - "bytes" - "testing" - - "golang.org/x/crypto/ssh" - "golang.org/x/crypto/ssh/agent" -) - -func TestAgentForward(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - keyring := agent.NewKeyring() - if err := keyring.Add(agent.AddedKey{PrivateKey: testPrivateKeys["dsa"]}); err != nil { - t.Fatalf("Error adding key: %s", err) - } - if err := keyring.Add(agent.AddedKey{ - PrivateKey: testPrivateKeys["dsa"], - ConfirmBeforeUse: true, - LifetimeSecs: 3600, - }); err != nil { - t.Fatalf("Error adding key with constraints: %s", err) - } - pub := testPublicKeys["dsa"] - - sess, err := conn.NewSession() - if err != nil { - t.Fatalf("NewSession: %v", err) - } - if err := agent.RequestAgentForwarding(sess); err != nil { - t.Fatalf("RequestAgentForwarding: %v", err) - } - - if err := agent.ForwardToAgent(conn, keyring); err != nil { - t.Fatalf("SetupForwardKeyring: %v", err) - } - out, err := sess.CombinedOutput("ssh-add -L") - if err != nil { - t.Fatalf("running ssh-add: %v, out %s", err, out) - } - key, _, _, _, err := ssh.ParseAuthorizedKey(out) - if err != nil { - t.Fatalf("ParseAuthorizedKey(%q): %v", out, err) - } - - if !bytes.Equal(key.Marshal(), pub.Marshal()) { - t.Fatalf("got key %s, want %s", ssh.MarshalAuthorizedKey(key), ssh.MarshalAuthorizedKey(pub)) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/banner_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/banner_test.go deleted file mode 100644 index f1ad4697c..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/banner_test.go +++ /dev/null @@ -1,33 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin dragonfly freebsd linux netbsd openbsd - -package test - -import ( - "testing" - -) - -func TestBannerCallbackAgainstOpenSSH(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - - clientConf := clientConfig() - - var receivedBanner string - clientConf.BannerCallback = func(message string) error { - receivedBanner = message - return nil - } - - conn := server.Dial(clientConf) - defer conn.Close() - - expected := "Server Banner" - if receivedBanner != expected { - t.Fatalf("got %v; want %v", receivedBanner, expected) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/cert_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/cert_test.go deleted file mode 100644 index b231dd80c..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/cert_test.go +++ /dev/null @@ -1,77 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin dragonfly freebsd linux netbsd openbsd - -package test - -import ( - "bytes" - "crypto/rand" - "testing" - - "golang.org/x/crypto/ssh" -) - -// Test both logging in with a cert, and also that the certificate presented by an OpenSSH host can be validated correctly -func TestCertLogin(t *testing.T) { - s := newServer(t) - defer s.Shutdown() - - // Use a key different from the default. - clientKey := testSigners["dsa"] - caAuthKey := testSigners["ecdsa"] - cert := &ssh.Certificate{ - Key: clientKey.PublicKey(), - ValidPrincipals: []string{username()}, - CertType: ssh.UserCert, - ValidBefore: ssh.CertTimeInfinity, - } - if err := cert.SignCert(rand.Reader, caAuthKey); err != nil { - t.Fatalf("SetSignature: %v", err) - } - - certSigner, err := ssh.NewCertSigner(cert, clientKey) - if err != nil { - t.Fatalf("NewCertSigner: %v", err) - } - - conf := &ssh.ClientConfig{ - User: username(), - HostKeyCallback: (&ssh.CertChecker{ - IsHostAuthority: func(pk ssh.PublicKey, addr string) bool { - return bytes.Equal(pk.Marshal(), testPublicKeys["ca"].Marshal()) - }, - }).CheckHostKey, - } - conf.Auth = append(conf.Auth, ssh.PublicKeys(certSigner)) - - for _, test := range []struct { - addr string - succeed bool - }{ - {addr: "host.example.com:22", succeed: true}, - {addr: "host.example.com:10000", succeed: true}, // non-standard port must be OK - {addr: "host.example.com", succeed: false}, // port must be specified - {addr: "host.ex4mple.com:22", succeed: false}, // wrong host - } { - client, err := s.TryDialWithAddr(conf, test.addr) - - // Always close client if opened successfully - if err == nil { - client.Close() - } - - // Now evaluate whether the test failed or passed - if test.succeed { - if err != nil { - t.Fatalf("TryDialWithAddr: %v", err) - } - } else { - if err == nil { - t.Fatalf("TryDialWithAddr, unexpected success") - } - } - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/dial_unix_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/dial_unix_test.go deleted file mode 100644 index 091e48cc1..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/dial_unix_test.go +++ /dev/null @@ -1,128 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !windows - -package test - -// direct-tcpip and direct-streamlocal functional tests - -import ( - "fmt" - "io" - "io/ioutil" - "net" - "strings" - "testing" -) - -type dialTester interface { - TestServerConn(t *testing.T, c net.Conn) - TestClientConn(t *testing.T, c net.Conn) -} - -func testDial(t *testing.T, n, listenAddr string, x dialTester) { - server := newServer(t) - defer server.Shutdown() - sshConn := server.Dial(clientConfig()) - defer sshConn.Close() - - l, err := net.Listen(n, listenAddr) - if err != nil { - t.Fatalf("Listen: %v", err) - } - defer l.Close() - - testData := fmt.Sprintf("hello from %s, %s", n, listenAddr) - go func() { - for { - c, err := l.Accept() - if err != nil { - break - } - x.TestServerConn(t, c) - - io.WriteString(c, testData) - c.Close() - } - }() - - conn, err := sshConn.Dial(n, l.Addr().String()) - if err != nil { - t.Fatalf("Dial: %v", err) - } - x.TestClientConn(t, conn) - defer conn.Close() - b, err := ioutil.ReadAll(conn) - if err != nil { - t.Fatalf("ReadAll: %v", err) - } - t.Logf("got %q", string(b)) - if string(b) != testData { - t.Fatalf("expected %q, got %q", testData, string(b)) - } -} - -type tcpDialTester struct { - listenAddr string -} - -func (x *tcpDialTester) TestServerConn(t *testing.T, c net.Conn) { - host := strings.Split(x.listenAddr, ":")[0] - prefix := host + ":" - if !strings.HasPrefix(c.LocalAddr().String(), prefix) { - t.Fatalf("expected to start with %q, got %q", prefix, c.LocalAddr().String()) - } - if !strings.HasPrefix(c.RemoteAddr().String(), prefix) { - t.Fatalf("expected to start with %q, got %q", prefix, c.RemoteAddr().String()) - } -} - -func (x *tcpDialTester) TestClientConn(t *testing.T, c net.Conn) { - // we use zero addresses. see *Client.Dial. - if c.LocalAddr().String() != "0.0.0.0:0" { - t.Fatalf("expected \"0.0.0.0:0\", got %q", c.LocalAddr().String()) - } - if c.RemoteAddr().String() != "0.0.0.0:0" { - t.Fatalf("expected \"0.0.0.0:0\", got %q", c.RemoteAddr().String()) - } -} - -func TestDialTCP(t *testing.T) { - x := &tcpDialTester{ - listenAddr: "127.0.0.1:0", - } - testDial(t, "tcp", x.listenAddr, x) -} - -type unixDialTester struct { - listenAddr string -} - -func (x *unixDialTester) TestServerConn(t *testing.T, c net.Conn) { - if c.LocalAddr().String() != x.listenAddr { - t.Fatalf("expected %q, got %q", x.listenAddr, c.LocalAddr().String()) - } - if c.RemoteAddr().String() != "@" { - t.Fatalf("expected \"@\", got %q", c.RemoteAddr().String()) - } -} - -func (x *unixDialTester) TestClientConn(t *testing.T, c net.Conn) { - if c.RemoteAddr().String() != x.listenAddr { - t.Fatalf("expected %q, got %q", x.listenAddr, c.RemoteAddr().String()) - } - if c.LocalAddr().String() != "@" { - t.Fatalf("expected \"@\", got %q", c.LocalAddr().String()) - } -} - -func TestDialUnix(t *testing.T) { - addr, cleanup := newTempSocket(t) - defer cleanup() - x := &unixDialTester{ - listenAddr: addr, - } - testDial(t, "unix", x.listenAddr, x) -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/doc.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/doc.go deleted file mode 100644 index 3f9b3346d..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/doc.go +++ /dev/null @@ -1,7 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// This package contains integration tests for the -// golang.org/x/crypto/ssh package. -package test // import "golang.org/x/crypto/ssh/test" diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/forward_unix_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/forward_unix_test.go deleted file mode 100644 index ea8193780..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/forward_unix_test.go +++ /dev/null @@ -1,194 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin dragonfly freebsd linux netbsd openbsd - -package test - -import ( - "bytes" - "io" - "io/ioutil" - "math/rand" - "net" - "testing" - "time" -) - -type closeWriter interface { - CloseWrite() error -} - -func testPortForward(t *testing.T, n, listenAddr string) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - sshListener, err := conn.Listen(n, listenAddr) - if err != nil { - t.Fatal(err) - } - - go func() { - sshConn, err := sshListener.Accept() - if err != nil { - t.Fatalf("listen.Accept failed: %v", err) - } - - _, err = io.Copy(sshConn, sshConn) - if err != nil && err != io.EOF { - t.Fatalf("ssh client copy: %v", err) - } - sshConn.Close() - }() - - forwardedAddr := sshListener.Addr().String() - netConn, err := net.Dial(n, forwardedAddr) - if err != nil { - t.Fatalf("net dial failed: %v", err) - } - - readChan := make(chan []byte) - go func() { - data, _ := ioutil.ReadAll(netConn) - readChan <- data - }() - - // Invent some data. - data := make([]byte, 100*1000) - for i := range data { - data[i] = byte(i % 255) - } - - var sent []byte - for len(sent) < 1000*1000 { - // Send random sized chunks - m := rand.Intn(len(data)) - n, err := netConn.Write(data[:m]) - if err != nil { - break - } - sent = append(sent, data[:n]...) - } - if err := netConn.(closeWriter).CloseWrite(); err != nil { - t.Errorf("netConn.CloseWrite: %v", err) - } - - read := <-readChan - - if len(sent) != len(read) { - t.Fatalf("got %d bytes, want %d", len(read), len(sent)) - } - if bytes.Compare(sent, read) != 0 { - t.Fatalf("read back data does not match") - } - - if err := sshListener.Close(); err != nil { - t.Fatalf("sshListener.Close: %v", err) - } - - // Check that the forward disappeared. - netConn, err = net.Dial(n, forwardedAddr) - if err == nil { - netConn.Close() - t.Errorf("still listening to %s after closing", forwardedAddr) - } -} - -func TestPortForwardTCP(t *testing.T) { - testPortForward(t, "tcp", "localhost:0") -} - -func TestPortForwardUnix(t *testing.T) { - addr, cleanup := newTempSocket(t) - defer cleanup() - testPortForward(t, "unix", addr) -} - -func testAcceptClose(t *testing.T, n, listenAddr string) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - - sshListener, err := conn.Listen(n, listenAddr) - if err != nil { - t.Fatal(err) - } - - quit := make(chan error, 1) - go func() { - for { - c, err := sshListener.Accept() - if err != nil { - quit <- err - break - } - c.Close() - } - }() - sshListener.Close() - - select { - case <-time.After(1 * time.Second): - t.Errorf("timeout: listener did not close.") - case err := <-quit: - t.Logf("quit as expected (error %v)", err) - } -} - -func TestAcceptCloseTCP(t *testing.T) { - testAcceptClose(t, "tcp", "localhost:0") -} - -func TestAcceptCloseUnix(t *testing.T) { - addr, cleanup := newTempSocket(t) - defer cleanup() - testAcceptClose(t, "unix", addr) -} - -// Check that listeners exit if the underlying client transport dies. -func testPortForwardConnectionClose(t *testing.T, n, listenAddr string) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - - sshListener, err := conn.Listen(n, listenAddr) - if err != nil { - t.Fatal(err) - } - - quit := make(chan error, 1) - go func() { - for { - c, err := sshListener.Accept() - if err != nil { - quit <- err - break - } - c.Close() - } - }() - - // It would be even nicer if we closed the server side, but it - // is more involved as the fd for that side is dup()ed. - server.clientConn.Close() - - select { - case <-time.After(1 * time.Second): - t.Errorf("timeout: listener did not close.") - case err := <-quit: - t.Logf("quit as expected (error %v)", err) - } -} - -func TestPortForwardConnectionCloseTCP(t *testing.T) { - testPortForwardConnectionClose(t, "tcp", "localhost:0") -} - -func TestPortForwardConnectionCloseUnix(t *testing.T) { - addr, cleanup := newTempSocket(t) - defer cleanup() - testPortForwardConnectionClose(t, "unix", addr) -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/session_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/session_test.go deleted file mode 100644 index 8238d9d90..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/session_test.go +++ /dev/null @@ -1,413 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !windows - -package test - -// Session functional tests. - -import ( - "bytes" - "errors" - "io" - "strings" - "testing" - - "golang.org/x/crypto/ssh" -) - -func TestRunCommandSuccess(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("session failed: %v", err) - } - defer session.Close() - err = session.Run("true") - if err != nil { - t.Fatalf("session failed: %v", err) - } -} - -func TestHostKeyCheck(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - - conf := clientConfig() - hostDB := hostKeyDB() - conf.HostKeyCallback = hostDB.Check - - // change the keys. - hostDB.keys[ssh.KeyAlgoRSA][25]++ - hostDB.keys[ssh.KeyAlgoDSA][25]++ - hostDB.keys[ssh.KeyAlgoECDSA256][25]++ - - conn, err := server.TryDial(conf) - if err == nil { - conn.Close() - t.Fatalf("dial should have failed.") - } else if !strings.Contains(err.Error(), "host key mismatch") { - t.Fatalf("'host key mismatch' not found in %v", err) - } -} - -func TestRunCommandStdin(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("session failed: %v", err) - } - defer session.Close() - - r, w := io.Pipe() - defer r.Close() - defer w.Close() - session.Stdin = r - - err = session.Run("true") - if err != nil { - t.Fatalf("session failed: %v", err) - } -} - -func TestRunCommandStdinError(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("session failed: %v", err) - } - defer session.Close() - - r, w := io.Pipe() - defer r.Close() - session.Stdin = r - pipeErr := errors.New("closing write end of pipe") - w.CloseWithError(pipeErr) - - err = session.Run("true") - if err != pipeErr { - t.Fatalf("expected %v, found %v", pipeErr, err) - } -} - -func TestRunCommandFailed(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("session failed: %v", err) - } - defer session.Close() - err = session.Run(`bash -c "kill -9 $$"`) - if err == nil { - t.Fatalf("session succeeded: %v", err) - } -} - -func TestRunCommandWeClosed(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("session failed: %v", err) - } - err = session.Shell() - if err != nil { - t.Fatalf("shell failed: %v", err) - } - err = session.Close() - if err != nil { - t.Fatalf("shell failed: %v", err) - } -} - -func TestFuncLargeRead(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("unable to create new session: %s", err) - } - - stdout, err := session.StdoutPipe() - if err != nil { - t.Fatalf("unable to acquire stdout pipe: %s", err) - } - - err = session.Start("dd if=/dev/urandom bs=2048 count=1024") - if err != nil { - t.Fatalf("unable to execute remote command: %s", err) - } - - buf := new(bytes.Buffer) - n, err := io.Copy(buf, stdout) - if err != nil { - t.Fatalf("error reading from remote stdout: %s", err) - } - - if n != 2048*1024 { - t.Fatalf("Expected %d bytes but read only %d from remote command", 2048, n) - } -} - -func TestKeyChange(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conf := clientConfig() - hostDB := hostKeyDB() - conf.HostKeyCallback = hostDB.Check - conf.RekeyThreshold = 1024 - conn := server.Dial(conf) - defer conn.Close() - - for i := 0; i < 4; i++ { - session, err := conn.NewSession() - if err != nil { - t.Fatalf("unable to create new session: %s", err) - } - - stdout, err := session.StdoutPipe() - if err != nil { - t.Fatalf("unable to acquire stdout pipe: %s", err) - } - - err = session.Start("dd if=/dev/urandom bs=1024 count=1") - if err != nil { - t.Fatalf("unable to execute remote command: %s", err) - } - buf := new(bytes.Buffer) - n, err := io.Copy(buf, stdout) - if err != nil { - t.Fatalf("error reading from remote stdout: %s", err) - } - - want := int64(1024) - if n != want { - t.Fatalf("Expected %d bytes but read only %d from remote command", want, n) - } - } - - if changes := hostDB.checkCount; changes < 4 { - t.Errorf("got %d key changes, want 4", changes) - } -} - -func TestInvalidTerminalMode(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("session failed: %v", err) - } - defer session.Close() - - if err = session.RequestPty("vt100", 80, 40, ssh.TerminalModes{255: 1984}); err == nil { - t.Fatalf("req-pty failed: successful request with invalid mode") - } -} - -func TestValidTerminalMode(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("session failed: %v", err) - } - defer session.Close() - - stdout, err := session.StdoutPipe() - if err != nil { - t.Fatalf("unable to acquire stdout pipe: %s", err) - } - - stdin, err := session.StdinPipe() - if err != nil { - t.Fatalf("unable to acquire stdin pipe: %s", err) - } - - tm := ssh.TerminalModes{ssh.ECHO: 0} - if err = session.RequestPty("xterm", 80, 40, tm); err != nil { - t.Fatalf("req-pty failed: %s", err) - } - - err = session.Shell() - if err != nil { - t.Fatalf("session failed: %s", err) - } - - stdin.Write([]byte("stty -a && exit\n")) - - var buf bytes.Buffer - if _, err := io.Copy(&buf, stdout); err != nil { - t.Fatalf("reading failed: %s", err) - } - - if sttyOutput := buf.String(); !strings.Contains(sttyOutput, "-echo ") { - t.Fatalf("terminal mode failure: expected -echo in stty output, got %s", sttyOutput) - } -} - -func TestWindowChange(t *testing.T) { - server := newServer(t) - defer server.Shutdown() - conn := server.Dial(clientConfig()) - defer conn.Close() - - session, err := conn.NewSession() - if err != nil { - t.Fatalf("session failed: %v", err) - } - defer session.Close() - - stdout, err := session.StdoutPipe() - if err != nil { - t.Fatalf("unable to acquire stdout pipe: %s", err) - } - - stdin, err := session.StdinPipe() - if err != nil { - t.Fatalf("unable to acquire stdin pipe: %s", err) - } - - tm := ssh.TerminalModes{ssh.ECHO: 0} - if err = session.RequestPty("xterm", 80, 40, tm); err != nil { - t.Fatalf("req-pty failed: %s", err) - } - - if err := session.WindowChange(100, 100); err != nil { - t.Fatalf("window-change failed: %s", err) - } - - err = session.Shell() - if err != nil { - t.Fatalf("session failed: %s", err) - } - - stdin.Write([]byte("stty size && exit\n")) - - var buf bytes.Buffer - if _, err := io.Copy(&buf, stdout); err != nil { - t.Fatalf("reading failed: %s", err) - } - - if sttyOutput := buf.String(); !strings.Contains(sttyOutput, "100 100") { - t.Fatalf("terminal WindowChange failure: expected \"100 100\" stty output, got %s", sttyOutput) - } -} - -func TestCiphers(t *testing.T) { - var config ssh.Config - config.SetDefaults() - cipherOrder := config.Ciphers - // These ciphers will not be tested when commented out in cipher.go it will - // fallback to the next available as per line 292. - cipherOrder = append(cipherOrder, "aes128-cbc", "3des-cbc") - - for _, ciph := range cipherOrder { - server := newServer(t) - defer server.Shutdown() - conf := clientConfig() - conf.Ciphers = []string{ciph} - // Don't fail if sshd doesn't have the cipher. - conf.Ciphers = append(conf.Ciphers, cipherOrder...) - conn, err := server.TryDial(conf) - if err == nil { - conn.Close() - } else { - t.Fatalf("failed for cipher %q", ciph) - } - } -} - -func TestMACs(t *testing.T) { - var config ssh.Config - config.SetDefaults() - macOrder := config.MACs - - for _, mac := range macOrder { - server := newServer(t) - defer server.Shutdown() - conf := clientConfig() - conf.MACs = []string{mac} - // Don't fail if sshd doesn't have the MAC. - conf.MACs = append(conf.MACs, macOrder...) - if conn, err := server.TryDial(conf); err == nil { - conn.Close() - } else { - t.Fatalf("failed for MAC %q", mac) - } - } -} - -func TestKeyExchanges(t *testing.T) { - var config ssh.Config - config.SetDefaults() - kexOrder := config.KeyExchanges - for _, kex := range kexOrder { - server := newServer(t) - defer server.Shutdown() - conf := clientConfig() - // Don't fail if sshd doesn't have the kex. - conf.KeyExchanges = append([]string{kex}, kexOrder...) - conn, err := server.TryDial(conf) - if err == nil { - conn.Close() - } else { - t.Errorf("failed for kex %q", kex) - } - } -} - -func TestClientAuthAlgorithms(t *testing.T) { - for _, key := range []string{ - "rsa", - "dsa", - "ecdsa", - "ed25519", - } { - server := newServer(t) - conf := clientConfig() - conf.SetDefaults() - conf.Auth = []ssh.AuthMethod{ - ssh.PublicKeys(testSigners[key]), - } - - conn, err := server.TryDial(conf) - if err == nil { - conn.Close() - } else { - t.Errorf("failed for key %q", key) - } - - server.Shutdown() - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/test_unix_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/test_unix_test.go deleted file mode 100644 index 6b1e0fff1..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/test_unix_test.go +++ /dev/null @@ -1,298 +0,0 @@ -// Copyright 2012 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin dragonfly freebsd linux netbsd openbsd plan9 - -package test - -// functional test harness for unix. - -import ( - "bytes" - "fmt" - "io/ioutil" - "log" - "net" - "os" - "os/exec" - "os/user" - "path/filepath" - "testing" - "text/template" - - "golang.org/x/crypto/ssh" - "golang.org/x/crypto/ssh/testdata" -) - -const sshd_config = ` -Protocol 2 -Banner {{.Dir}}/banner -HostKey {{.Dir}}/id_rsa -HostKey {{.Dir}}/id_dsa -HostKey {{.Dir}}/id_ecdsa -HostCertificate {{.Dir}}/id_rsa-cert.pub -Pidfile {{.Dir}}/sshd.pid -#UsePrivilegeSeparation no -KeyRegenerationInterval 3600 -ServerKeyBits 768 -SyslogFacility AUTH -LogLevel DEBUG2 -LoginGraceTime 120 -PermitRootLogin no -StrictModes no -RSAAuthentication yes -PubkeyAuthentication yes -AuthorizedKeysFile {{.Dir}}/authorized_keys -TrustedUserCAKeys {{.Dir}}/id_ecdsa.pub -IgnoreRhosts yes -RhostsRSAAuthentication no -HostbasedAuthentication no -PubkeyAcceptedKeyTypes=* -` - -var configTmpl = template.Must(template.New("").Parse(sshd_config)) - -type server struct { - t *testing.T - cleanup func() // executed during Shutdown - configfile string - cmd *exec.Cmd - output bytes.Buffer // holds stderr from sshd process - - // Client half of the network connection. - clientConn net.Conn -} - -func username() string { - var username string - if user, err := user.Current(); err == nil { - username = user.Username - } else { - // user.Current() currently requires cgo. If an error is - // returned attempt to get the username from the environment. - log.Printf("user.Current: %v; falling back on $USER", err) - username = os.Getenv("USER") - } - if username == "" { - panic("Unable to get username") - } - return username -} - -type storedHostKey struct { - // keys map from an algorithm string to binary key data. - keys map[string][]byte - - // checkCount counts the Check calls. Used for testing - // rekeying. - checkCount int -} - -func (k *storedHostKey) Add(key ssh.PublicKey) { - if k.keys == nil { - k.keys = map[string][]byte{} - } - k.keys[key.Type()] = key.Marshal() -} - -func (k *storedHostKey) Check(addr string, remote net.Addr, key ssh.PublicKey) error { - k.checkCount++ - algo := key.Type() - - if k.keys == nil || bytes.Compare(key.Marshal(), k.keys[algo]) != 0 { - return fmt.Errorf("host key mismatch. Got %q, want %q", key, k.keys[algo]) - } - return nil -} - -func hostKeyDB() *storedHostKey { - keyChecker := &storedHostKey{} - keyChecker.Add(testPublicKeys["ecdsa"]) - keyChecker.Add(testPublicKeys["rsa"]) - keyChecker.Add(testPublicKeys["dsa"]) - return keyChecker -} - -func clientConfig() *ssh.ClientConfig { - config := &ssh.ClientConfig{ - User: username(), - Auth: []ssh.AuthMethod{ - ssh.PublicKeys(testSigners["user"]), - }, - HostKeyCallback: hostKeyDB().Check, - HostKeyAlgorithms: []string{ // by default, don't allow certs as this affects the hostKeyDB checker - ssh.KeyAlgoECDSA256, ssh.KeyAlgoECDSA384, ssh.KeyAlgoECDSA521, - ssh.KeyAlgoRSA, ssh.KeyAlgoDSA, - ssh.KeyAlgoED25519, - }, - } - return config -} - -// unixConnection creates two halves of a connected net.UnixConn. It -// is used for connecting the Go SSH client with sshd without opening -// ports. -func unixConnection() (*net.UnixConn, *net.UnixConn, error) { - dir, err := ioutil.TempDir("", "unixConnection") - if err != nil { - return nil, nil, err - } - defer os.Remove(dir) - - addr := filepath.Join(dir, "ssh") - listener, err := net.Listen("unix", addr) - if err != nil { - return nil, nil, err - } - defer listener.Close() - c1, err := net.Dial("unix", addr) - if err != nil { - return nil, nil, err - } - - c2, err := listener.Accept() - if err != nil { - c1.Close() - return nil, nil, err - } - - return c1.(*net.UnixConn), c2.(*net.UnixConn), nil -} - -func (s *server) TryDial(config *ssh.ClientConfig) (*ssh.Client, error) { - return s.TryDialWithAddr(config, "") -} - -// addr is the user specified host:port. While we don't actually dial it, -// we need to know this for host key matching -func (s *server) TryDialWithAddr(config *ssh.ClientConfig, addr string) (*ssh.Client, error) { - sshd, err := exec.LookPath("sshd") - if err != nil { - s.t.Skipf("skipping test: %v", err) - } - - c1, c2, err := unixConnection() - if err != nil { - s.t.Fatalf("unixConnection: %v", err) - } - - s.cmd = exec.Command(sshd, "-f", s.configfile, "-i", "-e") - f, err := c2.File() - if err != nil { - s.t.Fatalf("UnixConn.File: %v", err) - } - defer f.Close() - s.cmd.Stdin = f - s.cmd.Stdout = f - s.cmd.Stderr = &s.output - if err := s.cmd.Start(); err != nil { - s.t.Fail() - s.Shutdown() - s.t.Fatalf("s.cmd.Start: %v", err) - } - s.clientConn = c1 - conn, chans, reqs, err := ssh.NewClientConn(c1, addr, config) - if err != nil { - return nil, err - } - return ssh.NewClient(conn, chans, reqs), nil -} - -func (s *server) Dial(config *ssh.ClientConfig) *ssh.Client { - conn, err := s.TryDial(config) - if err != nil { - s.t.Fail() - s.Shutdown() - s.t.Fatalf("ssh.Client: %v", err) - } - return conn -} - -func (s *server) Shutdown() { - if s.cmd != nil && s.cmd.Process != nil { - // Don't check for errors; if it fails it's most - // likely "os: process already finished", and we don't - // care about that. Use os.Interrupt, so child - // processes are killed too. - s.cmd.Process.Signal(os.Interrupt) - s.cmd.Wait() - } - if s.t.Failed() { - // log any output from sshd process - s.t.Logf("sshd: %s", s.output.String()) - } - s.cleanup() -} - -func writeFile(path string, contents []byte) { - f, err := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0600) - if err != nil { - panic(err) - } - defer f.Close() - if _, err := f.Write(contents); err != nil { - panic(err) - } -} - -// newServer returns a new mock ssh server. -func newServer(t *testing.T) *server { - if testing.Short() { - t.Skip("skipping test due to -short") - } - dir, err := ioutil.TempDir("", "sshtest") - if err != nil { - t.Fatal(err) - } - f, err := os.Create(filepath.Join(dir, "sshd_config")) - if err != nil { - t.Fatal(err) - } - err = configTmpl.Execute(f, map[string]string{ - "Dir": dir, - }) - if err != nil { - t.Fatal(err) - } - f.Close() - - writeFile(filepath.Join(dir, "banner"), []byte("Server Banner")) - - for k, v := range testdata.PEMBytes { - filename := "id_" + k - writeFile(filepath.Join(dir, filename), v) - writeFile(filepath.Join(dir, filename+".pub"), ssh.MarshalAuthorizedKey(testPublicKeys[k])) - } - - for k, v := range testdata.SSHCertificates { - filename := "id_" + k + "-cert.pub" - writeFile(filepath.Join(dir, filename), v) - } - - var authkeys bytes.Buffer - for k, _ := range testdata.PEMBytes { - authkeys.Write(ssh.MarshalAuthorizedKey(testPublicKeys[k])) - } - writeFile(filepath.Join(dir, "authorized_keys"), authkeys.Bytes()) - - return &server{ - t: t, - configfile: f.Name(), - cleanup: func() { - if err := os.RemoveAll(dir); err != nil { - t.Error(err) - } - }, - } -} - -func newTempSocket(t *testing.T) (string, func()) { - dir, err := ioutil.TempDir("", "socket") - if err != nil { - t.Fatal(err) - } - deferFunc := func() { os.RemoveAll(dir) } - addr := filepath.Join(dir, "sock") - return addr, deferFunc -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/testdata_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/testdata_test.go deleted file mode 100644 index a053f67ea..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/test/testdata_test.go +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// IMPLEMENTATION NOTE: To avoid a package loop, this file is in three places: -// ssh/, ssh/agent, and ssh/test/. It should be kept in sync across all three -// instances. - -package test - -import ( - "crypto/rand" - "fmt" - - "golang.org/x/crypto/ssh" - "golang.org/x/crypto/ssh/testdata" -) - -var ( - testPrivateKeys map[string]interface{} - testSigners map[string]ssh.Signer - testPublicKeys map[string]ssh.PublicKey -) - -func init() { - var err error - - n := len(testdata.PEMBytes) - testPrivateKeys = make(map[string]interface{}, n) - testSigners = make(map[string]ssh.Signer, n) - testPublicKeys = make(map[string]ssh.PublicKey, n) - for t, k := range testdata.PEMBytes { - testPrivateKeys[t], err = ssh.ParseRawPrivateKey(k) - if err != nil { - panic(fmt.Sprintf("Unable to parse test key %s: %v", t, err)) - } - testSigners[t], err = ssh.NewSignerFromKey(testPrivateKeys[t]) - if err != nil { - panic(fmt.Sprintf("Unable to create signer for test key %s: %v", t, err)) - } - testPublicKeys[t] = testSigners[t].PublicKey() - } - - // Create a cert and sign it for use in tests. - testCert := &ssh.Certificate{ - Nonce: []byte{}, // To pass reflect.DeepEqual after marshal & parse, this must be non-nil - ValidPrincipals: []string{"gopher1", "gopher2"}, // increases test coverage - ValidAfter: 0, // unix epoch - ValidBefore: ssh.CertTimeInfinity, // The end of currently representable time. - Reserved: []byte{}, // To pass reflect.DeepEqual after marshal & parse, this must be non-nil - Key: testPublicKeys["ecdsa"], - SignatureKey: testPublicKeys["rsa"], - Permissions: ssh.Permissions{ - CriticalOptions: map[string]string{}, - Extensions: map[string]string{}, - }, - } - testCert.SignCert(rand.Reader, testSigners["rsa"]) - testPrivateKeys["cert"] = testPrivateKeys["ecdsa"] - testSigners["cert"], err = ssh.NewCertSigner(testCert, testSigners["ecdsa"]) - if err != nil { - panic(fmt.Sprintf("Unable to create certificate signer: %v", err)) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata/doc.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata/doc.go deleted file mode 100644 index fcae47ca6..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata/doc.go +++ /dev/null @@ -1,8 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// This package contains test data shared between the various subpackages of -// the golang.org/x/crypto/ssh package. Under no circumstance should -// this data be used for production code. -package testdata // import "golang.org/x/crypto/ssh/testdata" diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata/keys.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata/keys.go deleted file mode 100644 index 3b3d26c5b..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata/keys.go +++ /dev/null @@ -1,177 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package testdata - -var PEMBytes = map[string][]byte{ - "dsa": []byte(`-----BEGIN DSA PRIVATE KEY----- -MIIBuwIBAAKBgQD6PDSEyXiI9jfNs97WuM46MSDCYlOqWw80ajN16AohtBncs1YB -lHk//dQOvCYOsYaE+gNix2jtoRjwXhDsc25/IqQbU1ahb7mB8/rsaILRGIbA5WH3 -EgFtJmXFovDz3if6F6TzvhFpHgJRmLYVR8cqsezL3hEZOvvs2iH7MorkxwIVAJHD -nD82+lxh2fb4PMsIiaXudAsBAoGAQRf7Q/iaPRn43ZquUhd6WwvirqUj+tkIu6eV -2nZWYmXLlqFQKEy4Tejl7Wkyzr2OSYvbXLzo7TNxLKoWor6ips0phYPPMyXld14r -juhT24CrhOzuLMhDduMDi032wDIZG4Y+K7ElU8Oufn8Sj5Wge8r6ANmmVgmFfynr -FhdYCngCgYEA3ucGJ93/Mx4q4eKRDxcWD3QzWyqpbRVRRV1Vmih9Ha/qC994nJFz -DQIdjxDIT2Rk2AGzMqFEB68Zc3O+Wcsmz5eWWzEwFxaTwOGWTyDqsDRLm3fD+QYj -nOwuxb0Kce+gWI8voWcqC9cyRm09jGzu2Ab3Bhtpg8JJ8L7gS3MRZK4CFEx4UAfY -Fmsr0W6fHB9nhS4/UXM8 ------END DSA PRIVATE KEY----- -`), - "ecdsa": []byte(`-----BEGIN EC PRIVATE KEY----- -MHcCAQEEINGWx0zo6fhJ/0EAfrPzVFyFC9s18lBt3cRoEDhS3ARooAoGCCqGSM49 -AwEHoUQDQgAEi9Hdw6KvZcWxfg2IDhA7UkpDtzzt6ZqJXSsFdLd+Kx4S3Sx4cVO+ -6/ZOXRnPmNAlLUqjShUsUBBngG0u2fqEqA== ------END EC PRIVATE KEY----- -`), - "rsa": []byte(`-----BEGIN RSA PRIVATE KEY----- -MIICXAIBAAKBgQC8A6FGHDiWCSREAXCq6yBfNVr0xCVG2CzvktFNRpue+RXrGs/2 -a6ySEJQb3IYquw7HlJgu6fg3WIWhOmHCjfpG0PrL4CRwbqQ2LaPPXhJErWYejcD8 -Di00cF3677+G10KMZk9RXbmHtuBFZT98wxg8j+ZsBMqGM1+7yrWUvynswQIDAQAB -AoGAJMCk5vqfSRzyXOTXLGIYCuR4Kj6pdsbNSeuuRGfYBeR1F2c/XdFAg7D/8s5R -38p/Ih52/Ty5S8BfJtwtvgVY9ecf/JlU/rl/QzhG8/8KC0NG7KsyXklbQ7gJT8UT -Ojmw5QpMk+rKv17ipDVkQQmPaj+gJXYNAHqImke5mm/K/h0CQQDciPmviQ+DOhOq -2ZBqUfH8oXHgFmp7/6pXw80DpMIxgV3CwkxxIVx6a8lVH9bT/AFySJ6vXq4zTuV9 -6QmZcZzDAkEA2j/UXJPIs1fQ8z/6sONOkU/BjtoePFIWJlRxdN35cZjXnBraX5UR -fFHkePv4YwqmXNqrBOvSu+w2WdSDci+IKwJAcsPRc/jWmsrJW1q3Ha0hSf/WG/Bu -X7MPuXaKpP/DkzGoUmb8ks7yqj6XWnYkPNLjCc8izU5vRwIiyWBRf4mxMwJBAILa -NDvRS0rjwt6lJGv7zPZoqDc65VfrK2aNyHx2PgFyzwrEOtuF57bu7pnvEIxpLTeM -z26i6XVMeYXAWZMTloMCQBbpGgEERQpeUknLBqUHhg/wXF6+lFA+vEGnkY+Dwab2 -KCXFGd+SQ5GdUcEMe9isUH6DYj/6/yCDoFrXXmpQb+M= ------END RSA PRIVATE KEY----- -`), - "ed25519": []byte(`-----BEGIN OPENSSH PRIVATE KEY----- -b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW -QyNTUxOQAAACA+3f7hS7g5UWwXOGVTrMfhmxyrjqz7Sxxbx7I1j8DvvwAAAJhAFfkOQBX5 -DgAAAAtzc2gtZWQyNTUxOQAAACA+3f7hS7g5UWwXOGVTrMfhmxyrjqz7Sxxbx7I1j8Dvvw -AAAEAaYmXltfW6nhRo3iWGglRB48lYq0z0Q3I3KyrdutEr6j7d/uFLuDlRbBc4ZVOsx+Gb -HKuOrPtLHFvHsjWPwO+/AAAAE2dhcnRvbm1AZ2FydG9ubS14cHMBAg== ------END OPENSSH PRIVATE KEY----- -`), - "rsa-openssh-format": []byte(`-----BEGIN OPENSSH PRIVATE KEY----- -b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAlwAAAAdzc2gtcn -NhAAAAAwEAAQAAAIEAwa48yfWFi3uIdqzuf9X7C2Zxfea/Iaaw0zIwHudpF8U92WVIiC5l -oEuW1+OaVi3UWfIEjWMV1tHGysrHOwtwc34BPCJqJknUQO/KtDTBTJ4Pryhw1bWPC999Lz -a+yrCTdNQYBzoROXKExZgPFh9pTMi5wqpHDuOQ2qZFIEI3lT0AAAIQWL0H31i9B98AAAAH -c3NoLXJzYQAAAIEAwa48yfWFi3uIdqzuf9X7C2Zxfea/Iaaw0zIwHudpF8U92WVIiC5loE -uW1+OaVi3UWfIEjWMV1tHGysrHOwtwc34BPCJqJknUQO/KtDTBTJ4Pryhw1bWPC999Lza+ -yrCTdNQYBzoROXKExZgPFh9pTMi5wqpHDuOQ2qZFIEI3lT0AAAADAQABAAAAgCThyTGsT4 -IARDxVMhWl6eiB2ZrgFgWSeJm/NOqtppWgOebsIqPMMg4UVuVFsl422/lE3RkPhVkjGXgE -pWvZAdCnmLmApK8wK12vF334lZhZT7t3Z9EzJps88PWEHo7kguf285HcnUM7FlFeissJdk -kXly34y7/3X/a6Tclm+iABAAAAQE0xR/KxZ39slwfMv64Rz7WKk1PPskaryI29aHE3mKHk -pY2QA+P3QlrKxT/VWUMjHUbNNdYfJm48xu0SGNMRdKMAAABBAORh2NP/06JUV3J9W/2Hju -X1ViJuqqcQnJPVzpgSL826EC2xwOECTqoY8uvFpUdD7CtpksIxNVqRIhuNOlz0lqEAAABB -ANkaHTTaPojClO0dKJ/Zjs7pWOCGliebBYprQ/Y4r9QLBkC/XaWMS26gFIrjgC7D2Rv+rZ -wSD0v0RcmkITP1ZR0AAAAYcHF1ZXJuYUBMdWNreUh5ZHJvLmxvY2FsAQID ------END OPENSSH PRIVATE KEY-----`), - "user": []byte(`-----BEGIN EC PRIVATE KEY----- -MHcCAQEEILYCAeq8f7V4vSSypRw7pxy8yz3V5W4qg8kSC3zJhqpQoAoGCCqGSM49 -AwEHoUQDQgAEYcO2xNKiRUYOLEHM7VYAp57HNyKbOdYtHD83Z4hzNPVC4tM5mdGD -PLL8IEwvYu2wq+lpXfGQnNMbzYf9gspG0w== ------END EC PRIVATE KEY----- -`), - "ca": []byte(`-----BEGIN RSA PRIVATE KEY----- -MIIEpAIBAAKCAQEAvg9dQ9IRG59lYJb+GESfKWTch4yBpr7Ydw1jkK6vvtrx9jLo -5hkA8X6+ElRPRqTAZSlN5cBm6YCAcQIOsmXDUn6Oj1lVPQAoOjTBTvsjM3NjGhvv -52kHTY0nsMsBeY9q5DTtlzmlYkVUq2a6Htgf2mNi01dIw5fJ7uTTo8EbNf7O0i3u -c9a8P19HaZl5NKiWN4EIZkfB2WdXYRJCVBsGgQj3dE/GrEmH9QINq1A+GkNvK96u -vZm8H1jjmuqzHplWa7lFeXcx8FTVTbVb/iJrZ2Lc/JvIPitKZWhqbR59yrGjpwEp -Id7bo4WhO5L3OB0fSIJYvfu+o4WYnt4f3UzecwIDAQABAoIBABRD9yHgKErVuC2Q -bA+SYZY8VvdtF/X7q4EmQFORDNRA7EPgMc03JU6awRGbQ8i4kHs46EFzPoXvWcKz -AXYsO6N0Myc900Tp22A5d9NAHATEbPC/wdje7hRq1KyZONMJY9BphFv3nZbY5apR -Dc90JBFZP5RhXjTc3n9GjvqLAKfFEKVmPRCvqxCOZunw6XR+SgIQLJo36nsIsbhW -QUXIVaCI6cXMN8bRPm8EITdBNZu06Fpu4ZHm6VaxlXN9smERCDkgBSNXNWHKxmmA -c3Glo2DByUr2/JFBOrLEe9fkYgr24KNCQkHVcSaFxEcZvTggr7StjKISVHlCNEaB -7Q+kPoECgYEA3zE9FmvFGoQCU4g4Nl3dpQHs6kaAW8vJlrmq3xsireIuaJoa2HMe -wYdIvgCnK9DIjyxd5OWnE4jXtAEYPsyGD32B5rSLQrRO96lgb3f4bESCLUb3Bsn/ -sdgeE3p1xZMA0B59htqCrvVgN9k8WxyevBxYl3/gSBm/p8OVH1RTW/ECgYEA2f9Z -95OLj0KQHQtxQXf+I3VjhCw3LkLW39QZOXVI0QrCJfqqP7uxsJXH9NYX0l0GFTcR -kRrlyoaSU1EGQosZh+n1MvplGBTkTSV47/bPsTzFpgK2NfEZuFm9RoWgltS+nYeH -Y2k4mnAN3PhReCMwuprmJz8GRLsO3Cs2s2YylKMCgYEA2UX+uO/q7jgqZ5UJW+ue -1H5+W0aMuFA3i7JtZEnvRaUVFqFGlwXin/WJ2+WY1++k/rPrJ+Rk9IBXtBUIvEGw -FC5TIfsKQsJyyWgqx/jbbtJ2g4s8+W/1qfTAuqeRNOg5d2DnRDs90wJuS4//0JaY -9HkHyVwkQyxFxhSA/AHEMJECgYA2MvyFR1O9bIk0D3I7GsA+xKLXa77Ua53MzIjw -9i4CezBGDQpjCiFli/fI8am+jY5DnAtsDknvjoG24UAzLy5L0mk6IXMdB6SzYYut -7ak5oahqW+Y9hxIj+XvLmtGQbphtxhJtLu35x75KoBpxSh6FZpmuTEccs31AVCYn -eFM/DQKBgQDOPUwbLKqVi6ddFGgrV9MrWw+SWsDa43bPuyvYppMM3oqesvyaX1Dt -qDvN7owaNxNM4OnfKcZr91z8YPVCFo4RbBif3DXRzjNNBlxEjHBtuMOikwvsmucN -vIrbeEpjTiUMTEAr6PoTiVHjsfS8WAM6MDlF5M+2PNswDsBpa2yLgA== ------END RSA PRIVATE KEY----- -`), -} - -var SSHCertificates = map[string][]byte{ - // The following are corresponding certificates for the private keys above, signed by the CA key - // Generated by the following commands: - // - // 1. Assumes "rsa" key above in file named "rsa", write out the public key to "rsa.pub": - // ssh-keygen -y -f rsa > rsa.pu - // - // 2. Assumes "ca" key above in file named "ca", sign a cert for "rsa.pub": - // ssh-keygen -s ca -h -n host.example.com -V +500w -I host.example.com-key rsa.pub - "rsa": []byte(`ssh-rsa-cert-v01@openssh.com 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 host.example.com -`), -} - -var PEMEncryptedKeys = []struct { - Name string - EncryptionKey string - PEMBytes []byte -}{ - 0: { - Name: "rsa-encrypted", - EncryptionKey: "r54-G0pher_t3st$", - PEMBytes: []byte(`-----BEGIN RSA PRIVATE KEY----- -Proc-Type: 4,ENCRYPTED -DEK-Info: AES-128-CBC,3E1714DE130BC5E81327F36564B05462 - -MqW88sud4fnWk/Jk3fkjh7ydu51ZkHLN5qlQgA4SkAXORPPMj2XvqZOv1v2LOgUV -dUevUn8PZK7a9zbZg4QShUSzwE5k6wdB7XKPyBgI39mJ79GBd2U4W3h6KT6jIdWA -goQpluxkrzr2/X602IaxLEre97FT9mpKC6zxKCLvyFWVIP9n3OSFS47cTTXyFr+l -7PdRhe60nn6jSBgUNk/Q1lAvEQ9fufdPwDYY93F1wyJ6lOr0F1+mzRrMbH67NyKs -rG8J1Fa7cIIre7ueKIAXTIne7OAWqpU9UDgQatDtZTbvA7ciqGsSFgiwwW13N+Rr -hN8MkODKs9cjtONxSKi05s206A3NDU6STtZ3KuPDjFE1gMJODotOuqSM+cxKfyFq -wxpk/CHYCDdMAVBSwxb/vraOHamylL4uCHpJdBHypzf2HABt+lS8Su23uAmL87DR -yvyCS/lmpuNTndef6qHPRkoW2EV3xqD3ovosGf7kgwGJUk2ZpCLVteqmYehKlZDK -r/Jy+J26ooI2jIg9bjvD1PZq+Mv+2dQ1RlDrPG3PB+rEixw6vBaL9x3jatCd4ej7 -XG7lb3qO9xFpLsx89tkEcvpGR+broSpUJ6Mu5LBCVmrvqHjvnDhrZVz1brMiQtU9 -iMZbgXqDLXHd6ERWygk7OTU03u+l1gs+KGMfmS0h0ZYw6KGVLgMnsoxqd6cFSKNB -8Ohk9ZTZGCiovlXBUepyu8wKat1k8YlHSfIHoRUJRhhcd7DrmojC+bcbMIZBU22T -Pl2ftVRGtcQY23lYd0NNKfebF7ncjuLWQGy+vZW+7cgfI6wPIbfYfP6g7QAutk6W -KQx0AoX5woZ6cNxtpIrymaVjSMRRBkKQrJKmRp3pC/lul5E5P2cueMs1fj4OHTbJ -lAUv88ywr+R+mRgYQlFW/XQ653f6DT4t6+njfO9oBcPrQDASZel3LjXLpjjYG/N5 -+BWnVexuJX9ika8HJiFl55oqaKb+WknfNhk5cPY+x7SDV9ywQeMiDZpr0ffeYAEP -LlwwiWRDYpO+uwXHSFF3+JjWwjhs8m8g99iFb7U93yKgBB12dCEPPa2ZeH9wUHMJ -sreYhNuq6f4iWWSXpzN45inQqtTi8jrJhuNLTT543ErW7DtntBO2rWMhff3aiXbn -Uy3qzZM1nPbuCGuBmP9L2dJ3Z5ifDWB4JmOyWY4swTZGt9AVmUxMIKdZpRONx8vz -I9u9nbVPGZBcou50Pa0qTLbkWsSL94MNXrARBxzhHC9Zs6XNEtwN7mOuii7uMkVc -adrxgknBH1J1N+NX/eTKzUwJuPvDtA+Z5ILWNN9wpZT/7ed8zEnKHPNUexyeT5g3 -uw9z9jH7ffGxFYlx87oiVPHGOrCXYZYW5uoZE31SCBkbtNuffNRJRKIFeipmpJ3P -7bpAG+kGHMelQH6b+5K1Qgsv4tpuSyKeTKpPFH9Av5nN4P1ZBm9N80tzbNWqjSJm -S7rYdHnuNEVnUGnRmEUMmVuYZnNBEVN/fP2m2SEwXcP3Uh7TiYlcWw10ygaGmOr7 -MvMLGkYgQ4Utwnd98mtqa0jr0hK2TcOSFir3AqVvXN3XJj4cVULkrXe4Im1laWgp ------END RSA PRIVATE KEY----- -`), - }, - - 1: { - Name: "dsa-encrypted", - EncryptionKey: "qG0pher-dsa_t3st$", - PEMBytes: []byte(`-----BEGIN DSA PRIVATE KEY----- -Proc-Type: 4,ENCRYPTED -DEK-Info: AES-128-CBC,7CE7A6E4A647DC01AF860210B15ADE3E - -hvnBpI99Hceq/55pYRdOzBLntIEis02JFNXuLEydWL+RJBFDn7tA+vXec0ERJd6J -G8JXlSOAhmC2H4uK3q2xR8/Y3yL95n6OIcjvCBiLsV+o3jj1MYJmErxP6zRtq4w3 -JjIjGHWmaYFSxPKQ6e8fs74HEqaeMV9ONUoTtB+aISmgaBL15Fcoayg245dkBvVl -h5Kqspe7yvOBmzA3zjRuxmSCqKJmasXM7mqs3vIrMxZE3XPo1/fWKcPuExgpVQoT -HkJZEoIEIIPnPMwT2uYbFJSGgPJVMDT84xz7yvjCdhLmqrsXgs5Qw7Pw0i0c0BUJ -b7fDJ2UhdiwSckWGmIhTLlJZzr8K+JpjCDlP+REYBI5meB7kosBnlvCEHdw2EJkH -0QDc/2F4xlVrHOLbPRFyu1Oi2Gvbeoo9EsM/DThpd1hKAlb0sF5Y0y0d+owv0PnE -R/4X3HWfIdOHsDUvJ8xVWZ4BZk9Zk9qol045DcFCehpr/3hslCrKSZHakLt9GI58 -vVQJ4L0aYp5nloLfzhViZtKJXRLkySMKdzYkIlNmW1oVGl7tce5UCNI8Nok4j6yn -IiHM7GBn+0nJoKTXsOGMIBe3ulKlKVxLjEuk9yivh/8= ------END DSA PRIVATE KEY----- -`), - }, -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata_test.go deleted file mode 100644 index 2da8c79dc..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/testdata_test.go +++ /dev/null @@ -1,63 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// IMPLEMENTATION NOTE: To avoid a package loop, this file is in three places: -// ssh/, ssh/agent, and ssh/test/. It should be kept in sync across all three -// instances. - -package ssh - -import ( - "crypto/rand" - "fmt" - - "golang.org/x/crypto/ssh/testdata" -) - -var ( - testPrivateKeys map[string]interface{} - testSigners map[string]Signer - testPublicKeys map[string]PublicKey -) - -func init() { - var err error - - n := len(testdata.PEMBytes) - testPrivateKeys = make(map[string]interface{}, n) - testSigners = make(map[string]Signer, n) - testPublicKeys = make(map[string]PublicKey, n) - for t, k := range testdata.PEMBytes { - testPrivateKeys[t], err = ParseRawPrivateKey(k) - if err != nil { - panic(fmt.Sprintf("Unable to parse test key %s: %v", t, err)) - } - testSigners[t], err = NewSignerFromKey(testPrivateKeys[t]) - if err != nil { - panic(fmt.Sprintf("Unable to create signer for test key %s: %v", t, err)) - } - testPublicKeys[t] = testSigners[t].PublicKey() - } - - // Create a cert and sign it for use in tests. - testCert := &Certificate{ - Nonce: []byte{}, // To pass reflect.DeepEqual after marshal & parse, this must be non-nil - ValidPrincipals: []string{"gopher1", "gopher2"}, // increases test coverage - ValidAfter: 0, // unix epoch - ValidBefore: CertTimeInfinity, // The end of currently representable time. - Reserved: []byte{}, // To pass reflect.DeepEqual after marshal & parse, this must be non-nil - Key: testPublicKeys["ecdsa"], - SignatureKey: testPublicKeys["rsa"], - Permissions: Permissions{ - CriticalOptions: map[string]string{}, - Extensions: map[string]string{}, - }, - } - testCert.SignCert(rand.Reader, testSigners["rsa"]) - testPrivateKeys["cert"] = testPrivateKeys["ecdsa"] - testSigners["cert"], err = NewCertSigner(testCert, testSigners["ecdsa"]) - if err != nil { - panic(fmt.Sprintf("Unable to create certificate signer: %v", err)) - } -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/transport.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/transport.go deleted file mode 100644 index ab2b88765..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/transport.go +++ /dev/null @@ -1,375 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bufio" - "errors" - "io" - "log" -) - -// debugTransport if set, will print packet types as they go over the -// wire. No message decoding is done, to minimize the impact on timing. -const debugTransport = false - -const ( - gcmCipherID = "aes128-gcm@openssh.com" - aes128cbcID = "aes128-cbc" - tripledescbcID = "3des-cbc" -) - -// packetConn represents a transport that implements packet based -// operations. -type packetConn interface { - // Encrypt and send a packet of data to the remote peer. - writePacket(packet []byte) error - - // Read a packet from the connection. The read is blocking, - // i.e. if error is nil, then the returned byte slice is - // always non-empty. - readPacket() ([]byte, error) - - // Close closes the write-side of the connection. - Close() error -} - -// transport is the keyingTransport that implements the SSH packet -// protocol. -type transport struct { - reader connectionState - writer connectionState - - bufReader *bufio.Reader - bufWriter *bufio.Writer - rand io.Reader - isClient bool - io.Closer -} - -// packetCipher represents a combination of SSH encryption/MAC -// protocol. A single instance should be used for one direction only. -type packetCipher interface { - // writePacket encrypts the packet and writes it to w. The - // contents of the packet are generally scrambled. - writePacket(seqnum uint32, w io.Writer, rand io.Reader, packet []byte) error - - // readPacket reads and decrypts a packet of data. The - // returned packet may be overwritten by future calls of - // readPacket. - readPacket(seqnum uint32, r io.Reader) ([]byte, error) -} - -// connectionState represents one side (read or write) of the -// connection. This is necessary because each direction has its own -// keys, and can even have its own algorithms -type connectionState struct { - packetCipher - seqNum uint32 - dir direction - pendingKeyChange chan packetCipher -} - -// prepareKeyChange sets up key material for a keychange. The key changes in -// both directions are triggered by reading and writing a msgNewKey packet -// respectively. -func (t *transport) prepareKeyChange(algs *algorithms, kexResult *kexResult) error { - if ciph, err := newPacketCipher(t.reader.dir, algs.r, kexResult); err != nil { - return err - } else { - t.reader.pendingKeyChange <- ciph - } - - if ciph, err := newPacketCipher(t.writer.dir, algs.w, kexResult); err != nil { - return err - } else { - t.writer.pendingKeyChange <- ciph - } - - return nil -} - -func (t *transport) printPacket(p []byte, write bool) { - if len(p) == 0 { - return - } - who := "server" - if t.isClient { - who = "client" - } - what := "read" - if write { - what = "write" - } - - log.Println(what, who, p[0]) -} - -// Read and decrypt next packet. -func (t *transport) readPacket() (p []byte, err error) { - for { - p, err = t.reader.readPacket(t.bufReader) - if err != nil { - break - } - if len(p) == 0 || (p[0] != msgIgnore && p[0] != msgDebug) { - break - } - } - if debugTransport { - t.printPacket(p, false) - } - - return p, err -} - -func (s *connectionState) readPacket(r *bufio.Reader) ([]byte, error) { - packet, err := s.packetCipher.readPacket(s.seqNum, r) - s.seqNum++ - if err == nil && len(packet) == 0 { - err = errors.New("ssh: zero length packet") - } - - if len(packet) > 0 { - switch packet[0] { - case msgNewKeys: - select { - case cipher := <-s.pendingKeyChange: - s.packetCipher = cipher - default: - return nil, errors.New("ssh: got bogus newkeys message.") - } - - case msgDisconnect: - // Transform a disconnect message into an - // error. Since this is lowest level at which - // we interpret message types, doing it here - // ensures that we don't have to handle it - // elsewhere. - var msg disconnectMsg - if err := Unmarshal(packet, &msg); err != nil { - return nil, err - } - return nil, &msg - } - } - - // The packet may point to an internal buffer, so copy the - // packet out here. - fresh := make([]byte, len(packet)) - copy(fresh, packet) - - return fresh, err -} - -func (t *transport) writePacket(packet []byte) error { - if debugTransport { - t.printPacket(packet, true) - } - return t.writer.writePacket(t.bufWriter, t.rand, packet) -} - -func (s *connectionState) writePacket(w *bufio.Writer, rand io.Reader, packet []byte) error { - changeKeys := len(packet) > 0 && packet[0] == msgNewKeys - - err := s.packetCipher.writePacket(s.seqNum, w, rand, packet) - if err != nil { - return err - } - if err = w.Flush(); err != nil { - return err - } - s.seqNum++ - if changeKeys { - select { - case cipher := <-s.pendingKeyChange: - s.packetCipher = cipher - default: - panic("ssh: no key material for msgNewKeys") - } - } - return err -} - -func newTransport(rwc io.ReadWriteCloser, rand io.Reader, isClient bool) *transport { - t := &transport{ - bufReader: bufio.NewReader(rwc), - bufWriter: bufio.NewWriter(rwc), - rand: rand, - reader: connectionState{ - packetCipher: &streamPacketCipher{cipher: noneCipher{}}, - pendingKeyChange: make(chan packetCipher, 1), - }, - writer: connectionState{ - packetCipher: &streamPacketCipher{cipher: noneCipher{}}, - pendingKeyChange: make(chan packetCipher, 1), - }, - Closer: rwc, - } - t.isClient = isClient - - if isClient { - t.reader.dir = serverKeys - t.writer.dir = clientKeys - } else { - t.reader.dir = clientKeys - t.writer.dir = serverKeys - } - - return t -} - -type direction struct { - ivTag []byte - keyTag []byte - macKeyTag []byte -} - -var ( - serverKeys = direction{[]byte{'B'}, []byte{'D'}, []byte{'F'}} - clientKeys = direction{[]byte{'A'}, []byte{'C'}, []byte{'E'}} -) - -// generateKeys generates key material for IV, MAC and encryption. -func generateKeys(d direction, algs directionAlgorithms, kex *kexResult) (iv, key, macKey []byte) { - cipherMode := cipherModes[algs.Cipher] - macMode := macModes[algs.MAC] - - iv = make([]byte, cipherMode.ivSize) - key = make([]byte, cipherMode.keySize) - macKey = make([]byte, macMode.keySize) - - generateKeyMaterial(iv, d.ivTag, kex) - generateKeyMaterial(key, d.keyTag, kex) - generateKeyMaterial(macKey, d.macKeyTag, kex) - return -} - -// setupKeys sets the cipher and MAC keys from kex.K, kex.H and sessionId, as -// described in RFC 4253, section 6.4. direction should either be serverKeys -// (to setup server->client keys) or clientKeys (for client->server keys). -func newPacketCipher(d direction, algs directionAlgorithms, kex *kexResult) (packetCipher, error) { - iv, key, macKey := generateKeys(d, algs, kex) - - if algs.Cipher == gcmCipherID { - return newGCMCipher(iv, key) - } - - if algs.Cipher == aes128cbcID { - return newAESCBCCipher(iv, key, macKey, algs) - } - - if algs.Cipher == tripledescbcID { - return newTripleDESCBCCipher(iv, key, macKey, algs) - } - - c := &streamPacketCipher{ - mac: macModes[algs.MAC].new(macKey), - etm: macModes[algs.MAC].etm, - } - c.macResult = make([]byte, c.mac.Size()) - - var err error - c.cipher, err = cipherModes[algs.Cipher].createStream(key, iv) - if err != nil { - return nil, err - } - - return c, nil -} - -// generateKeyMaterial fills out with key material generated from tag, K, H -// and sessionId, as specified in RFC 4253, section 7.2. -func generateKeyMaterial(out, tag []byte, r *kexResult) { - var digestsSoFar []byte - - h := r.Hash.New() - for len(out) > 0 { - h.Reset() - h.Write(r.K) - h.Write(r.H) - - if len(digestsSoFar) == 0 { - h.Write(tag) - h.Write(r.SessionID) - } else { - h.Write(digestsSoFar) - } - - digest := h.Sum(nil) - n := copy(out, digest) - out = out[n:] - if len(out) > 0 { - digestsSoFar = append(digestsSoFar, digest...) - } - } -} - -const packageVersion = "SSH-2.0-Go" - -// Sends and receives a version line. The versionLine string should -// be US ASCII, start with "SSH-2.0-", and should not include a -// newline. exchangeVersions returns the other side's version line. -func exchangeVersions(rw io.ReadWriter, versionLine []byte) (them []byte, err error) { - // Contrary to the RFC, we do not ignore lines that don't - // start with "SSH-2.0-" to make the library usable with - // nonconforming servers. - for _, c := range versionLine { - // The spec disallows non US-ASCII chars, and - // specifically forbids null chars. - if c < 32 { - return nil, errors.New("ssh: junk character in version line") - } - } - if _, err = rw.Write(append(versionLine, '\r', '\n')); err != nil { - return - } - - them, err = readVersion(rw) - return them, err -} - -// maxVersionStringBytes is the maximum number of bytes that we'll -// accept as a version string. RFC 4253 section 4.2 limits this at 255 -// chars -const maxVersionStringBytes = 255 - -// Read version string as specified by RFC 4253, section 4.2. -func readVersion(r io.Reader) ([]byte, error) { - versionString := make([]byte, 0, 64) - var ok bool - var buf [1]byte - - for len(versionString) < maxVersionStringBytes { - _, err := io.ReadFull(r, buf[:]) - if err != nil { - return nil, err - } - // The RFC says that the version should be terminated with \r\n - // but several SSH servers actually only send a \n. - if buf[0] == '\n' { - ok = true - break - } - - // non ASCII chars are disallowed, but we are lenient, - // since Go doesn't use null-terminated strings. - - // The RFC allows a comment after a space, however, - // all of it (version and comments) goes into the - // session hash. - versionString = append(versionString, buf[0]) - } - - if !ok { - return nil, errors.New("ssh: overflow reading version string") - } - - // There might be a '\r' on the end which we should remove. - if len(versionString) > 0 && versionString[len(versionString)-1] == '\r' { - versionString = versionString[:len(versionString)-1] - } - return versionString, nil -} diff --git a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/transport_test.go b/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/transport_test.go deleted file mode 100644 index 92d83abf9..000000000 --- a/vendor/github.com/miekg/dns/vendor/golang.org/x/crypto/ssh/transport_test.go +++ /dev/null @@ -1,109 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package ssh - -import ( - "bytes" - "crypto/rand" - "encoding/binary" - "strings" - "testing" -) - -func TestReadVersion(t *testing.T) { - longversion := strings.Repeat("SSH-2.0-bla", 50)[:253] - cases := map[string]string{ - "SSH-2.0-bla\r\n": "SSH-2.0-bla", - "SSH-2.0-bla\n": "SSH-2.0-bla", - longversion + "\r\n": longversion, - } - - for in, want := range cases { - result, err := readVersion(bytes.NewBufferString(in)) - if err != nil { - t.Errorf("readVersion(%q): %s", in, err) - } - got := string(result) - if got != want { - t.Errorf("got %q, want %q", got, want) - } - } -} - -func TestReadVersionError(t *testing.T) { - longversion := strings.Repeat("SSH-2.0-bla", 50)[:253] - cases := []string{ - longversion + "too-long\r\n", - } - for _, in := range cases { - if _, err := readVersion(bytes.NewBufferString(in)); err == nil { - t.Errorf("readVersion(%q) should have failed", in) - } - } -} - -func TestExchangeVersionsBasic(t *testing.T) { - v := "SSH-2.0-bla" - buf := bytes.NewBufferString(v + "\r\n") - them, err := exchangeVersions(buf, []byte("xyz")) - if err != nil { - t.Errorf("exchangeVersions: %v", err) - } - - if want := "SSH-2.0-bla"; string(them) != want { - t.Errorf("got %q want %q for our version", them, want) - } -} - -func TestExchangeVersions(t *testing.T) { - cases := []string{ - "not\x000allowed", - "not allowed\n", - } - for _, c := range cases { - buf := bytes.NewBufferString("SSH-2.0-bla\r\n") - if _, err := exchangeVersions(buf, []byte(c)); err == nil { - t.Errorf("exchangeVersions(%q): should have failed", c) - } - } -} - -type closerBuffer struct { - bytes.Buffer -} - -func (b *closerBuffer) Close() error { - return nil -} - -func TestTransportMaxPacketWrite(t *testing.T) { - buf := &closerBuffer{} - tr := newTransport(buf, rand.Reader, true) - huge := make([]byte, maxPacket+1) - err := tr.writePacket(huge) - if err == nil { - t.Errorf("transport accepted write for a huge packet.") - } -} - -func TestTransportMaxPacketReader(t *testing.T) { - var header [5]byte - huge := make([]byte, maxPacket+128) - binary.BigEndian.PutUint32(header[0:], uint32(len(huge))) - // padding. - header[4] = 0 - - buf := &closerBuffer{} - buf.Write(header[:]) - buf.Write(huge) - - tr := newTransport(buf, rand.Reader, true) - _, err := tr.readPacket() - if err == nil { - t.Errorf("transport succeeded reading huge packet.") - } else if !strings.Contains(err.Error(), "large") { - t.Errorf("got %q, should mention %q", err.Error(), "large") - } -} |