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Diffstat (limited to 'src/lib/tlslite/integration/HTTPTLSConnection.py')
| -rwxr-xr-x | src/lib/tlslite/integration/HTTPTLSConnection.py | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/lib/tlslite/integration/HTTPTLSConnection.py b/src/lib/tlslite/integration/HTTPTLSConnection.py new file mode 100755 index 000000000..a20400893 --- /dev/null +++ b/src/lib/tlslite/integration/HTTPTLSConnection.py @@ -0,0 +1,169 @@ +"""TLS Lite + httplib.""" + +import socket +import httplib +from Bcfg2.tlslite.TLSConnection import TLSConnection +from Bcfg2.tlslite.integration.ClientHelper import ClientHelper + + +class HTTPBaseTLSConnection(httplib.HTTPConnection): + """This abstract class provides a framework for adding TLS support + to httplib.""" + + default_port = 443 + + def __init__(self, host, port=None, strict=None): + if strict == None: + #Python 2.2 doesn't support strict + httplib.HTTPConnection.__init__(self, host, port) + else: + httplib.HTTPConnection.__init__(self, host, port, strict) + + def connect(self): + sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) + if hasattr(sock, 'settimeout'): + sock.settimeout(10) + sock.connect((self.host, self.port)) + + #Use a TLSConnection to emulate a socket + self.sock = TLSConnection(sock) + + #When httplib closes this, close the socket + self.sock.closeSocket = True + self._handshake(self.sock) + + def _handshake(self, tlsConnection): + """Called to perform some sort of handshake. + + This method must be overridden in a subclass to do some type of + handshake. This method will be called after the socket has + been connected but before any data has been sent. If this + method does not raise an exception, the TLS connection will be + considered valid. + + This method may (or may not) be called every time an HTTP + request is performed, depending on whether the underlying HTTP + connection is persistent. + + @type tlsConnection: L{tlslite.TLSConnection.TLSConnection} + @param tlsConnection: The connection to perform the handshake + on. + """ + raise NotImplementedError() + + +class HTTPTLSConnection(HTTPBaseTLSConnection, ClientHelper): + """This class extends L{HTTPBaseTLSConnection} to support the + common types of handshaking.""" + + def __init__(self, host, port=None, + username=None, password=None, sharedKey=None, + certChain=None, privateKey=None, + cryptoID=None, protocol=None, + x509Fingerprint=None, + x509TrustList=None, x509CommonName=None, + settings = None): + """Create a new HTTPTLSConnection. + + For client authentication, use one of these argument + combinations: + - username, password (SRP) + - username, sharedKey (shared-key) + - certChain, privateKey (certificate) + + For server authentication, you can either rely on the + implicit mutual authentication performed by SRP or + shared-keys, or you can do certificate-based server + authentication with one of these argument combinations: + - cryptoID[, protocol] (requires cryptoIDlib) + - x509Fingerprint + - x509TrustList[, x509CommonName] (requires cryptlib_py) + + Certificate-based server authentication is compatible with + SRP or certificate-based client authentication. It is + not compatible with shared-keys. + + The constructor does not perform the TLS handshake itself, but + simply stores these arguments for later. The handshake is + performed only when this class needs to connect with the + server. Thus you should be prepared to handle TLS-specific + exceptions when calling methods inherited from + L{httplib.HTTPConnection} such as request(), connect(), and + send(). See the client handshake functions in + L{tlslite.TLSConnection.TLSConnection} for details on which + exceptions might be raised. + + @type host: str + @param host: Server to connect to. + + @type port: int + @param port: Port to connect to. + + @type username: str + @param username: SRP or shared-key username. Requires the + 'password' or 'sharedKey' argument. + + @type password: str + @param password: SRP password for mutual authentication. + Requires the 'username' argument. + + @type sharedKey: str + @param sharedKey: Shared key for mutual authentication. + Requires the 'username' argument. + + @type certChain: L{tlslite.X509CertChain.X509CertChain} or + L{cryptoIDlib.CertChain.CertChain} + @param certChain: Certificate chain for client authentication. + Requires the 'privateKey' argument. Excludes the SRP or + shared-key related arguments. + + @type privateKey: L{tlslite.utils.RSAKey.RSAKey} + @param privateKey: Private key for client authentication. + Requires the 'certChain' argument. Excludes the SRP or + shared-key related arguments. + + @type cryptoID: str + @param cryptoID: cryptoID for server authentication. Mutually + exclusive with the 'x509...' arguments. + + @type protocol: str + @param protocol: cryptoID protocol URI for server + authentication. Requires the 'cryptoID' argument. + + @type x509Fingerprint: str + @param x509Fingerprint: Hex-encoded X.509 fingerprint for + server authentication. Mutually exclusive with the 'cryptoID' + and 'x509TrustList' arguments. + + @type x509TrustList: list of L{tlslite.X509.X509} + @param x509TrustList: A list of trusted root certificates. The + other party must present a certificate chain which extends to + one of these root certificates. The cryptlib_py module must be + installed to use this parameter. Mutually exclusive with the + 'cryptoID' and 'x509Fingerprint' arguments. + + @type x509CommonName: str + @param x509CommonName: The end-entity certificate's 'CN' field + must match this value. For a web server, this is typically a + server name such as 'www.amazon.com'. Mutually exclusive with + the 'cryptoID' and 'x509Fingerprint' arguments. Requires the + 'x509TrustList' argument. + + @type settings: L{tlslite.HandshakeSettings.HandshakeSettings} + @param settings: Various settings which can be used to control + the ciphersuites, certificate types, and SSL/TLS versions + offered by the client. + """ + + HTTPBaseTLSConnection.__init__(self, host, port) + + ClientHelper.__init__(self, + username, password, sharedKey, + certChain, privateKey, + cryptoID, protocol, + x509Fingerprint, + x509TrustList, x509CommonName, + settings) + + def _handshake(self, tlsConnection): + ClientHelper._handshake(self, tlsConnection) |