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- # Source Generated with Decompyle++
- # File: in.pyc (Python 2.6)
-
- '''
- A helper class for using TLS Lite with stdlib clients
- (httplib, xmlrpclib, imaplib, poplib).
- '''
- from gdata.tlslite.Checker import Checker
-
- class ClientHelper:
- '''This is a helper class used to integrate TLS Lite with various
- TLS clients (e.g. poplib, smtplib, httplib, etc.)'''
-
- def __init__(self, username = None, password = None, sharedKey = None, certChain = None, privateKey = None, cryptoID = None, protocol = None, x509Fingerprint = None, x509TrustList = None, x509CommonName = None, settings = None):
- """
- 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. Then you should be prepared to handle TLS-specific
- exceptions. See the client handshake functions in
- L{tlslite.TLSConnection.TLSConnection} for details on which
- exceptions might be raised.
-
- @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.
- """
- self.username = None
- self.password = None
- self.sharedKey = None
- self.certChain = None
- self.privateKey = None
- self.checker = None
- if username and password:
- if not sharedKey and certChain:
- pass
- if not privateKey:
- self.username = username
- self.password = password
- elif username and sharedKey:
- if not password and certChain:
- pass
- if not privateKey:
- self.username = username
- self.sharedKey = sharedKey
- elif certChain and privateKey:
- if not username and password:
- pass
- if not sharedKey:
- self.certChain = certChain
- self.privateKey = privateKey
- elif not password and not username and not sharedKey and not certChain and not privateKey:
- pass
- else:
- raise ValueError('Bad parameters')
- if not privateKey:
- if cryptoID and protocol or x509Fingerprint:
- raise ValueError("Can't use shared keys with other forms ofauthentication")
- x509Fingerprint
- self.checker = Checker(cryptoID, protocol, x509Fingerprint, x509TrustList, x509CommonName)
- self.settings = settings
- self.tlsSession = None
-
-
- def _handshake(self, tlsConnection):
- if self.username and self.password:
- tlsConnection.handshakeClientSRP(username = self.username, password = self.password, checker = self.checker, settings = self.settings, session = self.tlsSession)
- elif self.username and self.sharedKey:
- tlsConnection.handshakeClientSharedKey(username = self.username, sharedKey = self.sharedKey, settings = self.settings)
- else:
- tlsConnection.handshakeClientCert(certChain = self.certChain, privateKey = self.privateKey, checker = self.checker, settings = self.settings, session = self.tlsSession)
- self.tlsSession = tlsConnection.session
-
-
-