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author | Christopher Speller <crspeller@gmail.com> | 2018-04-16 05:37:14 -0700 |
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committer | Joram Wilander <jwawilander@gmail.com> | 2018-04-16 08:37:14 -0400 |
commit | 6e2cb00008cbf09e556b00f87603797fcaa47e09 (patch) | |
tree | 3c0eb55ff4226a3f024aad373140d1fb860a6404 /vendor/golang.org/x/net/icmp/interface.go | |
parent | bf24f51c4e1cc6286885460672f7f449e8c6f5ef (diff) | |
download | chat-6e2cb00008cbf09e556b00f87603797fcaa47e09.tar.gz chat-6e2cb00008cbf09e556b00f87603797fcaa47e09.tar.bz2 chat-6e2cb00008cbf09e556b00f87603797fcaa47e09.zip |
Depenancy upgrades and movign to dep. (#8630)
Diffstat (limited to 'vendor/golang.org/x/net/icmp/interface.go')
-rw-r--r-- | vendor/golang.org/x/net/icmp/interface.go | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/vendor/golang.org/x/net/icmp/interface.go b/vendor/golang.org/x/net/icmp/interface.go deleted file mode 100644 index 78b5b98bf..000000000 --- a/vendor/golang.org/x/net/icmp/interface.go +++ /dev/null @@ -1,236 +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 icmp - -import ( - "encoding/binary" - "net" - "strings" - - "golang.org/x/net/internal/iana" -) - -const ( - classInterfaceInfo = 2 - - afiIPv4 = 1 - afiIPv6 = 2 -) - -const ( - attrMTU = 1 << iota - attrName - attrIPAddr - attrIfIndex -) - -// An InterfaceInfo represents interface and next-hop identification. -type InterfaceInfo struct { - Class int // extension object class number - Type int // extension object sub-type - Interface *net.Interface - Addr *net.IPAddr -} - -func (ifi *InterfaceInfo) nameLen() int { - if len(ifi.Interface.Name) > 63 { - return 64 - } - l := 1 + len(ifi.Interface.Name) - return (l + 3) &^ 3 -} - -func (ifi *InterfaceInfo) attrsAndLen(proto int) (attrs, l int) { - l = 4 - if ifi.Interface != nil && ifi.Interface.Index > 0 { - attrs |= attrIfIndex - l += 4 - if len(ifi.Interface.Name) > 0 { - attrs |= attrName - l += ifi.nameLen() - } - if ifi.Interface.MTU > 0 { - attrs |= attrMTU - l += 4 - } - } - if ifi.Addr != nil { - switch proto { - case iana.ProtocolICMP: - if ifi.Addr.IP.To4() != nil { - attrs |= attrIPAddr - l += 4 + net.IPv4len - } - case iana.ProtocolIPv6ICMP: - if ifi.Addr.IP.To16() != nil && ifi.Addr.IP.To4() == nil { - attrs |= attrIPAddr - l += 4 + net.IPv6len - } - } - } - return -} - -// Len implements the Len method of Extension interface. -func (ifi *InterfaceInfo) Len(proto int) int { - _, l := ifi.attrsAndLen(proto) - return l -} - -// Marshal implements the Marshal method of Extension interface. -func (ifi *InterfaceInfo) Marshal(proto int) ([]byte, error) { - attrs, l := ifi.attrsAndLen(proto) - b := make([]byte, l) - if err := ifi.marshal(proto, b, attrs, l); err != nil { - return nil, err - } - return b, nil -} - -func (ifi *InterfaceInfo) marshal(proto int, b []byte, attrs, l int) error { - binary.BigEndian.PutUint16(b[:2], uint16(l)) - b[2], b[3] = classInterfaceInfo, byte(ifi.Type) - for b = b[4:]; len(b) > 0 && attrs != 0; { - switch { - case attrs&attrIfIndex != 0: - b = ifi.marshalIfIndex(proto, b) - attrs &^= attrIfIndex - case attrs&attrIPAddr != 0: - b = ifi.marshalIPAddr(proto, b) - attrs &^= attrIPAddr - case attrs&attrName != 0: - b = ifi.marshalName(proto, b) - attrs &^= attrName - case attrs&attrMTU != 0: - b = ifi.marshalMTU(proto, b) - attrs &^= attrMTU - } - } - return nil -} - -func (ifi *InterfaceInfo) marshalIfIndex(proto int, b []byte) []byte { - binary.BigEndian.PutUint32(b[:4], uint32(ifi.Interface.Index)) - return b[4:] -} - -func (ifi *InterfaceInfo) parseIfIndex(b []byte) ([]byte, error) { - if len(b) < 4 { - return nil, errMessageTooShort - } - ifi.Interface.Index = int(binary.BigEndian.Uint32(b[:4])) - return b[4:], nil -} - -func (ifi *InterfaceInfo) marshalIPAddr(proto int, b []byte) []byte { - switch proto { - case iana.ProtocolICMP: - binary.BigEndian.PutUint16(b[:2], uint16(afiIPv4)) - copy(b[4:4+net.IPv4len], ifi.Addr.IP.To4()) - b = b[4+net.IPv4len:] - case iana.ProtocolIPv6ICMP: - binary.BigEndian.PutUint16(b[:2], uint16(afiIPv6)) - copy(b[4:4+net.IPv6len], ifi.Addr.IP.To16()) - b = b[4+net.IPv6len:] - } - return b -} - -func (ifi *InterfaceInfo) parseIPAddr(b []byte) ([]byte, error) { - if len(b) < 4 { - return nil, errMessageTooShort - } - afi := int(binary.BigEndian.Uint16(b[:2])) - b = b[4:] - switch afi { - case afiIPv4: - if len(b) < net.IPv4len { - return nil, errMessageTooShort - } - ifi.Addr.IP = make(net.IP, net.IPv4len) - copy(ifi.Addr.IP, b[:net.IPv4len]) - b = b[net.IPv4len:] - case afiIPv6: - if len(b) < net.IPv6len { - return nil, errMessageTooShort - } - ifi.Addr.IP = make(net.IP, net.IPv6len) - copy(ifi.Addr.IP, b[:net.IPv6len]) - b = b[net.IPv6len:] - } - return b, nil -} - -func (ifi *InterfaceInfo) marshalName(proto int, b []byte) []byte { - l := byte(ifi.nameLen()) - b[0] = l - copy(b[1:], []byte(ifi.Interface.Name)) - return b[l:] -} - -func (ifi *InterfaceInfo) parseName(b []byte) ([]byte, error) { - if 4 > len(b) || len(b) < int(b[0]) { - return nil, errMessageTooShort - } - l := int(b[0]) - if l%4 != 0 || 4 > l || l > 64 { - return nil, errInvalidExtension - } - var name [63]byte - copy(name[:], b[1:l]) - ifi.Interface.Name = strings.Trim(string(name[:]), "\000") - return b[l:], nil -} - -func (ifi *InterfaceInfo) marshalMTU(proto int, b []byte) []byte { - binary.BigEndian.PutUint32(b[:4], uint32(ifi.Interface.MTU)) - return b[4:] -} - -func (ifi *InterfaceInfo) parseMTU(b []byte) ([]byte, error) { - if len(b) < 4 { - return nil, errMessageTooShort - } - ifi.Interface.MTU = int(binary.BigEndian.Uint32(b[:4])) - return b[4:], nil -} - -func parseInterfaceInfo(b []byte) (Extension, error) { - ifi := &InterfaceInfo{ - Class: int(b[2]), - Type: int(b[3]), - } - if ifi.Type&(attrIfIndex|attrName|attrMTU) != 0 { - ifi.Interface = &net.Interface{} - } - if ifi.Type&attrIPAddr != 0 { - ifi.Addr = &net.IPAddr{} - } - attrs := ifi.Type & (attrIfIndex | attrIPAddr | attrName | attrMTU) - for b = b[4:]; len(b) > 0 && attrs != 0; { - var err error - switch { - case attrs&attrIfIndex != 0: - b, err = ifi.parseIfIndex(b) - attrs &^= attrIfIndex - case attrs&attrIPAddr != 0: - b, err = ifi.parseIPAddr(b) - attrs &^= attrIPAddr - case attrs&attrName != 0: - b, err = ifi.parseName(b) - attrs &^= attrName - case attrs&attrMTU != 0: - b, err = ifi.parseMTU(b) - attrs &^= attrMTU - } - if err != nil { - return nil, err - } - } - if ifi.Interface != nil && ifi.Interface.Name != "" && ifi.Addr != nil && ifi.Addr.IP.To16() != nil && ifi.Addr.IP.To4() == nil { - ifi.Addr.Zone = ifi.Interface.Name - } - return ifi, nil -} |