Na}{

File Content: `_cred.py`

# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Credential managers for L{twisted.mail}.
"""

from __future__ import absolute_import, division

import hmac

from zope.interface import implementer

from twisted.cred import credentials
from twisted.python.compat import nativeString
from twisted.mail._except import IllegalClientResponse
from twisted.mail.interfaces import IClientAuthentication, IChallengeResponse


@implementer(IClientAuthentication)
class CramMD5ClientAuthenticator:
    def __init__(self, user):
        self.user = user


    def getName(self):
        return b"CRAM-MD5"


    def challengeResponse(self, secret, chal):
        response = hmac.HMAC(secret, chal).hexdigest().encode('ascii')
        return self.user + b' ' + response



@implementer(IClientAuthentication)
class LOGINAuthenticator:
    def __init__(self, user):
        self.user = user
        self.challengeResponse = self.challengeUsername


    def getName(self):
        return b"LOGIN"


    def challengeUsername(self, secret, chal):
        # Respond to something like "Username:"
        self.challengeResponse = self.challengeSecret
        return self.user


    def challengeSecret(self, secret, chal):
        # Respond to something like "Password:"
        return secret



@implementer(IClientAuthentication)
class PLAINAuthenticator:
    def __init__(self, user):
        self.user = user


    def getName(self):
        return b"PLAIN"


    def challengeResponse(self, secret, chal):
        return b'\0' + self.user + b'\0' + secret



@implementer(IChallengeResponse)
class LOGINCredentials(credentials.UsernamePassword):
    def __init__(self):
        self.challenges = [b'Password\0', b'User Name\0']
        self.responses = [b'password', b'username']
        credentials.UsernamePassword.__init__(self, None, None)


    def getChallenge(self):
        return self.challenges.pop()


    def setResponse(self, response):
        setattr(self, nativeString(self.responses.pop()), response)


    def moreChallenges(self):
        return bool(self.challenges)



@implementer(IChallengeResponse)
class PLAINCredentials(credentials.UsernamePassword):
    def __init__(self):
        credentials.UsernamePassword.__init__(self, None, None)


    def getChallenge(self):
        return b''


    def setResponse(self, response):
        parts = response.split(b'\0')
        if len(parts) != 3:
            raise IllegalClientResponse(
                "Malformed Response - wrong number of parts")
        useless, self.username, self.password = parts


    def moreChallenges(self):
        return False


__all__ = [
    "CramMD5ClientAuthenticator",
    "LOGINCredentials", "LOGINAuthenticator",
    "PLAINCredentials", "PLAINAuthenticator",
]

Name	Size	Permission
__pycache__	---	0755
scripts	---	0755
test	---	0755
__init__.py	458 bytes	0644
_cred.py	2786 bytes	0644
_except.py	8763 bytes	0644
imap4.py	211261 bytes	0644
interfaces.py	32153 bytes	0644
pop3.py	54946 bytes	0644
pop3client.py	46706 bytes	0644
protocols.py	12644 bytes	0644
relay.py	5361 bytes	0644
smtp.py	71612 bytes	0644

File Content: _cred.py

File Content: `_cred.py`