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"""TLS Lite + poplib."""
import socket
from poplib import POP3
from Bcfg2.tlslite.TLSConnection import TLSConnection
from Bcfg2.tlslite.integration.ClientHelper import ClientHelper
# POP TLS PORT
POP3_TLS_PORT = 995
class POP3_TLS(POP3, ClientHelper):
"""This class extends L{poplib.POP3} with TLS support."""
def __init__(self, host, port = POP3_TLS_PORT,
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 POP3_TLS.
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 caller 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 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.
"""
self.host = host
self.port = port
msg = "getaddrinfo returns an empty list"
self.sock = None
for res in socket.getaddrinfo(self.host, self.port, 0, socket.SOCK_STREAM):
af, socktype, proto, canonname, sa = res
try:
self.sock = socket.socket(af, socktype, proto)
self.sock.connect(sa)
except socket.error, msg:
if self.sock:
self.sock.close()
self.sock = None
continue
break
if not self.sock:
raise socket.error, msg
### New code below (all else copied from poplib)
ClientHelper.__init__(self,
username, password, sharedKey,
certChain, privateKey,
cryptoID, protocol,
x509Fingerprint,
x509TrustList, x509CommonName,
settings)
self.sock = TLSConnection(self.sock)
self.sock.closeSocket = True
ClientHelper._handshake(self, self.sock)
###
self.file = self.sock.makefile('rb')
self._debugging = 0
self.welcome = self._getresp()
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