/usr/lib/python2.7/dist-packages/twext/who/checker.py is in python-twext 0.1.b2.dev15059-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | # -*- test-case-name: twext.who.test.test_checker -*-
##
# Copyright (c) 2013-2015 Apple Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
##
"""
L{twisted.cred}-style credential checker.
"""
from zope.interface import implementer, classImplements, Attribute
from twisted.internet.defer import inlineCallbacks, returnValue
from twisted.cred.error import UnauthorizedLogin
from twisted.cred.checkers import ICredentialsChecker
from twisted.cred.credentials import (
ICredentials, IUsernamePassword, IUsernameHashedPassword,
DigestedCredentials,
)
from .idirectory import (
IDirectoryService, RecordType,
IPlaintextPasswordVerifier, IHTTPDigestVerifier,
)
@implementer(ICredentialsChecker)
class BaseCredentialChecker(object):
# credentialInterfaces = (IUsernamePassword, IUsernameHashedPassword)
def __init__(self, service):
"""
@param service: The directory service to use to obtain directory
records and validate credentials against.
@type service: L{IDirectoryService}
"""
if not IDirectoryService.providedBy(service):
raise TypeError("Not an IDirectoryService: {0!r}".format(service))
self.service = service
class UsernamePasswordCredentialChecker(BaseCredentialChecker):
credentialInterfaces = (IUsernamePassword, IUsernameHashedPassword)
@inlineCallbacks
def requestAvatarId(self, credentials):
if not IUsernamePassword.providedBy(credentials):
raise TypeError(
"Not an IUsernamePassword: {0!r}".format(credentials)
)
record = yield self.service.recordWithShortName(
RecordType.user, credentials.username.decode("utf-8")
)
if record is None:
raise UnauthorizedLogin("No such user")
if not IPlaintextPasswordVerifier.providedBy(record):
raise UnauthorizedLogin(
"Not an IPlaintextPasswordVerifier: {0!r}".format(record)
)
auth = yield record.verifyPlaintextPassword(credentials.password)
if auth:
returnValue(record)
raise UnauthorizedLogin("Incorrect password")
class IHTTPDigest(ICredentials):
"""
HTTP digest credentials.
"""
username = Attribute("User (short) name")
method = Attribute("...")
fields = Attribute("...") # Attributes would be better.
classImplements(DigestedCredentials, (IHTTPDigest,))
class HTTPDigestCredentialChecker(BaseCredentialChecker):
credentialInterfaces = (IHTTPDigest,)
@inlineCallbacks
def requestAvatarId(self, credentials):
if not IHTTPDigest.providedBy(credentials):
raise TypeError(
"Not an IHTTPDigest: {0!r}".format(credentials)
)
record = yield self.service.recordWithShortName(
RecordType.user, credentials.username.decode("utf-8")
)
if record is None:
raise UnauthorizedLogin("No such user")
if not IHTTPDigestVerifier.providedBy(record):
raise UnauthorizedLogin(
"Not an IHTTPDigestVerifier: {0!r}".format(record)
)
result = yield record.verifyHTTPDigest(
credentials.username,
credentials.fields.get("realm"),
credentials.fields.get("uri"),
credentials.fields.get("nonce"),
credentials.fields.get("cnonce"),
credentials.fields.get("algorithm", "md5"),
credentials.fields.get("nc"),
credentials.fields.get("qop"),
credentials.fields.get("response"),
credentials.method,
)
if result:
returnValue(record)
raise UnauthorizedLogin("Incorrect password")
|