Merge pull request #701 from DoubleMalt/ldap-auth

Add LDAP authentication
This commit is contained in:
Erik Johnston 2016-04-07 17:35:28 +01:00
commit f942980c0b
4 changed files with 134 additions and 10 deletions

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@ -57,3 +57,6 @@ Florent Violleau <floviolleau at gmail dot com>
Niklas Riekenbrauck <nikriek at gmail dot.com>
* Add JWT support for registration and login
Christoph Witzany <christoph at web.crofting.com>
* Add LDAP support for authentication

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@ -30,13 +30,14 @@ from .saml2 import SAML2Config
from .cas import CasConfig
from .password import PasswordConfig
from .jwt import JWTConfig
from .ldap import LDAPConfig
class HomeServerConfig(TlsConfig, ServerConfig, DatabaseConfig, LoggingConfig,
RatelimitConfig, ContentRepositoryConfig, CaptchaConfig,
VoipConfig, RegistrationConfig, MetricsConfig, ApiConfig,
AppServiceConfig, KeyConfig, SAML2Config, CasConfig,
JWTConfig, PasswordConfig,):
JWTConfig, LDAPConfig, PasswordConfig,):
pass

52
synapse/config/ldap.py Normal file
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@ -0,0 +1,52 @@
# -*- coding: utf-8 -*-
# Copyright 2015 Niklas Riekenbrauck
#
# 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.
from ._base import Config
class LDAPConfig(Config):
def read_config(self, config):
ldap_config = config.get("ldap_config", None)
if ldap_config:
self.ldap_enabled = ldap_config.get("enabled", False)
self.ldap_server = ldap_config["server"]
self.ldap_port = ldap_config["port"]
self.ldap_tls = ldap_config.get("tls", False)
self.ldap_search_base = ldap_config["search_base"]
self.ldap_search_property = ldap_config["search_property"]
self.ldap_email_property = ldap_config["email_property"]
self.ldap_full_name_property = ldap_config["full_name_property"]
else:
self.ldap_enabled = False
self.ldap_server = None
self.ldap_port = None
self.ldap_tls = False
self.ldap_search_base = None
self.ldap_search_property = None
self.ldap_email_property = None
self.ldap_full_name_property = None
def default_config(self, **kwargs):
return """\
# ldap_config:
# enabled: true
# server: "ldap://localhost"
# port: 389
# tls: false
# search_base: "ou=Users,dc=example,dc=com"
# search_property: "cn"
# email_property: "email"
# full_name_property: "givenName"
"""

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@ -49,6 +49,21 @@ class AuthHandler(BaseHandler):
self.sessions = {}
self.INVALID_TOKEN_HTTP_STATUS = 401
self.ldap_enabled = hs.config.ldap_enabled
self.ldap_server = hs.config.ldap_server
self.ldap_port = hs.config.ldap_port
self.ldap_tls = hs.config.ldap_tls
self.ldap_search_base = hs.config.ldap_search_base
self.ldap_search_property = hs.config.ldap_search_property
self.ldap_email_property = hs.config.ldap_email_property
self.ldap_full_name_property = hs.config.ldap_full_name_property
if self.ldap_enabled is True:
import ldap
logger.info("Import ldap version: %s", ldap.__version__)
self.hs = hs # FIXME better possibility to access registrationHandler later?
@defer.inlineCallbacks
def check_auth(self, flows, clientdict, clientip):
"""
@ -215,8 +230,10 @@ class AuthHandler(BaseHandler):
if not user_id.startswith('@'):
user_id = UserID.create(user_id, self.hs.hostname).to_string()
user_id, password_hash = yield self._find_user_id_and_pwd_hash(user_id)
self._check_password(user_id, password, password_hash)
if not (yield self._check_password(user_id, password)):
logger.warn("Failed password login for user %s", user_id)
raise LoginError(403, "", errcode=Codes.FORBIDDEN)
defer.returnValue(user_id)
@defer.inlineCallbacks
@ -340,8 +357,10 @@ class AuthHandler(BaseHandler):
StoreError if there was a problem storing the token.
LoginError if there was an authentication problem.
"""
user_id, password_hash = yield self._find_user_id_and_pwd_hash(user_id)
self._check_password(user_id, password, password_hash)
if not (yield self._check_password(user_id, password)):
logger.warn("Failed password login for user %s", user_id)
raise LoginError(403, "", errcode=Codes.FORBIDDEN)
logger.info("Logging in user %s", user_id)
access_token = yield self.issue_access_token(user_id)
@ -407,11 +426,60 @@ class AuthHandler(BaseHandler):
else:
defer.returnValue(user_infos.popitem())
def _check_password(self, user_id, password, stored_hash):
"""Checks that user_id has passed password, raises LoginError if not."""
if not self.validate_hash(password, stored_hash):
logger.warn("Failed password login for user %s", user_id)
raise LoginError(403, "", errcode=Codes.FORBIDDEN)
@defer.inlineCallbacks
def _check_password(self, user_id, password):
defer.returnValue(
not (
(yield self._check_ldap_password(user_id, password))
or
(yield self._check_local_password(user_id, password))
))
@defer.inlineCallbacks
def _check_local_password(self, user_id, password):
try:
user_id, password_hash = yield self._find_user_id_and_pwd_hash(user_id)
defer.returnValue(not self.validate_hash(password, password_hash))
except LoginError:
defer.returnValue(False)
@defer.inlineCallbacks
def _check_ldap_password(self, user_id, password):
if self.ldap_enabled is not True:
logger.debug("LDAP not configured")
defer.returnValue(False)
import ldap
logger.info("Authenticating %s with LDAP" % user_id)
try:
ldap_url = "%s:%s" % (self.ldap_server, self.ldap_port)
logger.debug("Connecting LDAP server at %s" % ldap_url)
l = ldap.initialize(ldap_url)
if self.ldap_tls:
logger.debug("Initiating TLS")
self._connection.start_tls_s()
local_name = UserID.from_string(user_id).localpart
dn = "%s=%s, %s" % (
self.ldap_search_property,
local_name,
self.ldap_search_base)
logger.debug("DN for LDAP authentication: %s" % dn)
l.simple_bind_s(dn.encode('utf-8'), password.encode('utf-8'))
if not (yield self.does_user_exist(user_id)):
handler = self.hs.get_handlers().registration_handler
user_id, access_token = (
yield handler.register(localpart=local_name)
)
defer.returnValue(True)
except ldap.LDAPError, e:
logger.warn("LDAP error: %s", e)
defer.returnValue(False)
@defer.inlineCallbacks
def issue_access_token(self, user_id):