diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/app/pusher.py | 4 | ||||
| -rw-r--r-- | synapse/config/homeserver.py | 6 | ||||
| -rw-r--r-- | synapse/config/ldap.py | 100 | ||||
| -rw-r--r-- | synapse/config/password_auth_providers.py | 61 | ||||
| -rw-r--r-- | synapse/config/tls.py | 38 | ||||
| -rw-r--r-- | synapse/handlers/auth.py | 334 | ||||
| -rw-r--r-- | synapse/replication/resource.py | 137 | ||||
| -rw-r--r-- | synapse/rest/key/v2/local_key_resource.py | 21 | ||||
| -rw-r--r-- | synapse/storage/room.py | 3 | ||||
| -rw-r--r-- | synapse/util/ldap_auth_provider.py | 368 |
10 files changed, 624 insertions, 448 deletions
diff --git a/synapse/app/pusher.py b/synapse/app/pusher.py index d59f4a571c..1a6f5507a9 100644 --- a/synapse/app/pusher.py +++ b/synapse/app/pusher.py @@ -197,7 +197,7 @@ class PusherServer(HomeServer): yield start_pusher(user_id, app_id, pushkey) stream = results.get("events") - if stream: + if stream and stream["rows"]: min_stream_id = stream["rows"][0][0] max_stream_id = stream["position"] preserve_fn(pusher_pool.on_new_notifications)( @@ -205,7 +205,7 @@ class PusherServer(HomeServer): ) stream = results.get("receipts") - if stream: + if stream and stream["rows"]: rows = stream["rows"] affected_room_ids = set(row[1] for row in rows) min_stream_id = rows[0][0] diff --git a/synapse/config/homeserver.py b/synapse/config/homeserver.py index 79b0534b3b..0f890fc04a 100644 --- a/synapse/config/homeserver.py +++ b/synapse/config/homeserver.py @@ -30,7 +30,7 @@ from .saml2 import SAML2Config from .cas import CasConfig from .password import PasswordConfig from .jwt import JWTConfig -from .ldap import LDAPConfig +from .password_auth_providers import PasswordAuthProviderConfig from .emailconfig import EmailConfig from .workers import WorkerConfig @@ -39,8 +39,8 @@ class HomeServerConfig(TlsConfig, ServerConfig, DatabaseConfig, LoggingConfig, RatelimitConfig, ContentRepositoryConfig, CaptchaConfig, VoipConfig, RegistrationConfig, MetricsConfig, ApiConfig, AppServiceConfig, KeyConfig, SAML2Config, CasConfig, - JWTConfig, LDAPConfig, PasswordConfig, EmailConfig, - WorkerConfig,): + JWTConfig, PasswordConfig, EmailConfig, + WorkerConfig, PasswordAuthProviderConfig,): pass diff --git a/synapse/config/ldap.py b/synapse/config/ldap.py deleted file mode 100644 index d83c2230be..0000000000 --- a/synapse/config/ldap.py +++ /dev/null @@ -1,100 +0,0 @@ -# -*- 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, ConfigError - - -MISSING_LDAP3 = ( - "Missing ldap3 library. This is required for LDAP Authentication." -) - - -class LDAPMode(object): - SIMPLE = "simple", - SEARCH = "search", - - LIST = (SIMPLE, SEARCH) - - -class LDAPConfig(Config): - def read_config(self, config): - ldap_config = config.get("ldap_config", {}) - - self.ldap_enabled = ldap_config.get("enabled", False) - - if self.ldap_enabled: - # verify dependencies are available - try: - import ldap3 - ldap3 # to stop unused lint - except ImportError: - raise ConfigError(MISSING_LDAP3) - - self.ldap_mode = LDAPMode.SIMPLE - - # verify config sanity - self.require_keys(ldap_config, [ - "uri", - "base", - "attributes", - ]) - - self.ldap_uri = ldap_config["uri"] - self.ldap_start_tls = ldap_config.get("start_tls", False) - self.ldap_base = ldap_config["base"] - self.ldap_attributes = ldap_config["attributes"] - - if "bind_dn" in ldap_config: - self.ldap_mode = LDAPMode.SEARCH - self.require_keys(ldap_config, [ - "bind_dn", - "bind_password", - ]) - - self.ldap_bind_dn = ldap_config["bind_dn"] - self.ldap_bind_password = ldap_config["bind_password"] - self.ldap_filter = ldap_config.get("filter", None) - - # verify attribute lookup - self.require_keys(ldap_config['attributes'], [ - "uid", - "name", - "mail", - ]) - - def require_keys(self, config, required): - missing = [key for key in required if key not in config] - if missing: - raise ConfigError( - "LDAP enabled but missing required config values: {}".format( - ", ".join(missing) - ) - ) - - def default_config(self, **kwargs): - return """\ - # ldap_config: - # enabled: true - # uri: "ldap://ldap.example.com:389" - # start_tls: true - # base: "ou=users,dc=example,dc=com" - # attributes: - # uid: "cn" - # mail: "email" - # name: "givenName" - # #bind_dn: - # #bind_password: - # #filter: "(objectClass=posixAccount)" - """ diff --git a/synapse/config/password_auth_providers.py b/synapse/config/password_auth_providers.py new file mode 100644 index 0000000000..f6d9bb1c62 --- /dev/null +++ b/synapse/config/password_auth_providers.py @@ -0,0 +1,61 @@ +# -*- coding: utf-8 -*- +# Copyright 2016 Openmarket +# +# 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 + +import importlib + + +class PasswordAuthProviderConfig(Config): + def read_config(self, config): + self.password_providers = [] + + # We want to be backwards compatible with the old `ldap_config` + # param. + ldap_config = config.get("ldap_config", {}) + self.ldap_enabled = ldap_config.get("enabled", False) + if self.ldap_enabled: + from synapse.util.ldap_auth_provider import LdapAuthProvider + parsed_config = LdapAuthProvider.parse_config(ldap_config) + self.password_providers.append((LdapAuthProvider, parsed_config)) + + providers = config.get("password_providers", []) + for provider in providers: + # We need to import the module, and then pick the class out of + # that, so we split based on the last dot. + module, clz = provider['module'].rsplit(".", 1) + module = importlib.import_module(module) + provider_class = getattr(module, clz) + + provider_config = provider_class.parse_config(provider["config"]) + self.password_providers.append((provider_class, provider_config)) + + def default_config(self, **kwargs): + return """\ + # password_providers: + # - module: "synapse.util.ldap_auth_provider.LdapAuthProvider" + # config: + # enabled: true + # uri: "ldap://ldap.example.com:389" + # start_tls: true + # base: "ou=users,dc=example,dc=com" + # attributes: + # uid: "cn" + # mail: "email" + # name: "givenName" + # #bind_dn: + # #bind_password: + # #filter: "(objectClass=posixAccount)" + """ diff --git a/synapse/config/tls.py b/synapse/config/tls.py index fac8550823..3c58d2de17 100644 --- a/synapse/config/tls.py +++ b/synapse/config/tls.py @@ -19,6 +19,9 @@ from OpenSSL import crypto import subprocess import os +from hashlib import sha256 +from unpaddedbase64 import encode_base64 + GENERATE_DH_PARAMS = False @@ -42,6 +45,19 @@ class TlsConfig(Config): config.get("tls_dh_params_path"), "tls_dh_params" ) + self.tls_fingerprints = config["tls_fingerprints"] + + # Check that our own certificate is included in the list of fingerprints + # and include it if it is not. + x509_certificate_bytes = crypto.dump_certificate( + crypto.FILETYPE_ASN1, + self.tls_certificate + ) + sha256_fingerprint = encode_base64(sha256(x509_certificate_bytes).digest()) + sha256_fingerprints = set(f["sha256"] for f in self.tls_fingerprints) + if sha256_fingerprint not in sha256_fingerprints: + self.tls_fingerprints.append({u"sha256": sha256_fingerprint}) + # This config option applies to non-federation HTTP clients # (e.g. for talking to recaptcha, identity servers, and such) # It should never be used in production, and is intended for @@ -73,6 +89,28 @@ class TlsConfig(Config): # Don't bind to the https port no_tls: False + + # List of allowed TLS fingerprints for this server to publish along + # with the signing keys for this server. Other matrix servers that + # make HTTPS requests to this server will check that the TLS + # certificates returned by this server match one of the fingerprints. + # + # Synapse automatically adds its the fingerprint of its own certificate + # to the list. So if federation traffic is handle directly by synapse + # then no modification to the list is required. + # + # If synapse is run behind a load balancer that handles the TLS then it + # will be necessary to add the fingerprints of the certificates used by + # the loadbalancers to this list if they are different to the one + # synapse is using. + # + # Homeservers are permitted to cache the list of TLS fingerprints + # returned in the key responses up to the "valid_until_ts" returned in + # key. It may be necessary to publish the fingerprints of a new + # certificate and wait until the "valid_until_ts" of the previous key + # responses have passed before deploying it. + tls_fingerprints: [] + # tls_fingerprints: [{"sha256": "<base64_encoded_sha256_fingerprint>"}] """ % locals() def read_tls_certificate(self, cert_path): diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py index 6b8de1e7cf..dc0fe60e1b 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -20,7 +20,6 @@ from synapse.api.constants import LoginType from synapse.types import UserID from synapse.api.errors import AuthError, LoginError, Codes, StoreError, SynapseError from synapse.util.async import run_on_reactor -from synapse.config.ldap import LDAPMode from twisted.web.client import PartialDownloadError @@ -29,13 +28,6 @@ import bcrypt import pymacaroons import simplejson -try: - import ldap3 - import ldap3.core.exceptions -except ImportError: - ldap3 = None - pass - import synapse.util.stringutils as stringutils @@ -60,21 +52,14 @@ class AuthHandler(BaseHandler): self.bcrypt_rounds = hs.config.bcrypt_rounds self.sessions = {} - self.ldap_enabled = hs.config.ldap_enabled - if self.ldap_enabled: - if not ldap3: - raise RuntimeError( - 'Missing ldap3 library. This is required for LDAP Authentication.' - ) - self.ldap_mode = hs.config.ldap_mode - self.ldap_uri = hs.config.ldap_uri - self.ldap_start_tls = hs.config.ldap_start_tls - self.ldap_base = hs.config.ldap_base - self.ldap_attributes = hs.config.ldap_attributes - if self.ldap_mode == LDAPMode.SEARCH: - self.ldap_bind_dn = hs.config.ldap_bind_dn - self.ldap_bind_password = hs.config.ldap_bind_password - self.ldap_filter = hs.config.ldap_filter + account_handler = _AccountHandler( + hs, check_user_exists=self.check_user_exists + ) + + self.password_providers = [ + module(config=config, account_handler=account_handler) + for module, config in hs.config.password_providers + ] self.hs = hs # FIXME better possibility to access registrationHandler later? self.device_handler = hs.get_device_handler() @@ -497,9 +482,10 @@ class AuthHandler(BaseHandler): Raises: LoginError if login fails """ - valid_ldap = yield self._check_ldap_password(user_id, password) - if valid_ldap: - defer.returnValue(user_id) + for provider in self.password_providers: + is_valid = yield provider.check_password(user_id, password) + if is_valid: + defer.returnValue(user_id) canonical_user_id = yield self._check_local_password(user_id, password) @@ -536,275 +522,6 @@ class AuthHandler(BaseHandler): defer.returnValue(None) defer.returnValue(user_id) - def _ldap_simple_bind(self, server, localpart, password): - """ Attempt a simple bind with the credentials - given by the user against the LDAP server. - - Returns True, LDAP3Connection - if the bind was successful - Returns False, None - if an error occured - """ - - try: - # bind with the the local users ldap credentials - bind_dn = "{prop}={value},{base}".format( - prop=self.ldap_attributes['uid'], - value=localpart, - base=self.ldap_base - ) - conn = ldap3.Connection(server, bind_dn, password) - logger.debug( - "Established LDAP connection in simple bind mode: %s", - conn - ) - - if self.ldap_start_tls: - conn.start_tls() - logger.debug( - "Upgraded LDAP connection in simple bind mode through StartTLS: %s", - conn - ) - - if conn.bind(): - # GOOD: bind okay - logger.debug("LDAP Bind successful in simple bind mode.") - return True, conn - - # BAD: bind failed - logger.info( - "Binding against LDAP failed for '%s' failed: %s", - localpart, conn.result['description'] - ) - conn.unbind() - return False, None - - except ldap3.core.exceptions.LDAPException as e: - logger.warn("Error during LDAP authentication: %s", e) - return False, None - - def _ldap_authenticated_search(self, server, localpart, password): - """ Attempt to login with the preconfigured bind_dn - and then continue searching and filtering within - the base_dn - - Returns (True, LDAP3Connection) - if a single matching DN within the base was found - that matched the filter expression, and with which - a successful bind was achieved - - The LDAP3Connection returned is the instance that was used to - verify the password not the one using the configured bind_dn. - Returns (False, None) - if an error occured - """ - - try: - conn = ldap3.Connection( - server, - self.ldap_bind_dn, - self.ldap_bind_password - ) - logger.debug( - "Established LDAP connection in search mode: %s", - conn - ) - - if self.ldap_start_tls: - conn.start_tls() - logger.debug( - "Upgraded LDAP connection in search mode through StartTLS: %s", - conn - ) - - if not conn.bind(): - logger.warn( - "Binding against LDAP with `bind_dn` failed: %s", - conn.result['description'] - ) - conn.unbind() - return False, None - - # construct search_filter like (uid=localpart) - query = "({prop}={value})".format( - prop=self.ldap_attributes['uid'], - value=localpart - ) - if self.ldap_filter: - # combine with the AND expression - query = "(&{query}{filter})".format( - query=query, - filter=self.ldap_filter - ) - logger.debug( - "LDAP search filter: %s", - query - ) - conn.search( - search_base=self.ldap_base, - search_filter=query - ) - - if len(conn.response) == 1: - # GOOD: found exactly one result - user_dn = conn.response[0]['dn'] - logger.debug('LDAP search found dn: %s', user_dn) - - # unbind and simple bind with user_dn to verify the password - # Note: do not use rebind(), for some reason it did not verify - # the password for me! - conn.unbind() - return self._ldap_simple_bind(server, localpart, password) - else: - # BAD: found 0 or > 1 results, abort! - if len(conn.response) == 0: - logger.info( - "LDAP search returned no results for '%s'", - localpart - ) - else: - logger.info( - "LDAP search returned too many (%s) results for '%s'", - len(conn.response), localpart - ) - conn.unbind() - return False, None - - except ldap3.core.exceptions.LDAPException as e: - logger.warn("Error during LDAP authentication: %s", e) - return False, None - - @defer.inlineCallbacks - def _check_ldap_password(self, user_id, password): - """ Attempt to authenticate a user against an LDAP Server - and register an account if none exists. - - Returns: - True if authentication against LDAP was successful - """ - - if not ldap3 or not self.ldap_enabled: - defer.returnValue(False) - - localpart = UserID.from_string(user_id).localpart - - try: - server = ldap3.Server(self.ldap_uri) - logger.debug( - "Attempting LDAP connection with %s", - self.ldap_uri - ) - - if self.ldap_mode == LDAPMode.SIMPLE: - result, conn = self._ldap_simple_bind( - server=server, localpart=localpart, password=password - ) - logger.debug( - 'LDAP authentication method simple bind returned: %s (conn: %s)', - result, - conn - ) - if not result: - defer.returnValue(False) - elif self.ldap_mode == LDAPMode.SEARCH: - result, conn = self._ldap_authenticated_search( - server=server, localpart=localpart, password=password - ) - logger.debug( - 'LDAP auth method authenticated search returned: %s (conn: %s)', - result, - conn - ) - if not result: - defer.returnValue(False) - else: - raise RuntimeError( - 'Invalid LDAP mode specified: {mode}'.format( - mode=self.ldap_mode - ) - ) - - try: - logger.info( - "User authenticated against LDAP server: %s", - conn - ) - except NameError: - logger.warn("Authentication method yielded no LDAP connection, aborting!") - defer.returnValue(False) - - # check if user with user_id exists - if (yield self.check_user_exists(user_id)): - # exists, authentication complete - conn.unbind() - defer.returnValue(True) - - else: - # does not exist, fetch metadata for account creation from - # existing ldap connection - query = "({prop}={value})".format( - prop=self.ldap_attributes['uid'], - value=localpart - ) - - if self.ldap_mode == LDAPMode.SEARCH and self.ldap_filter: - query = "(&{filter}{user_filter})".format( - filter=query, - user_filter=self.ldap_filter - ) - logger.debug( - "ldap registration filter: %s", - query - ) - - conn.search( - search_base=self.ldap_base, - search_filter=query, - attributes=[ - self.ldap_attributes['name'], - self.ldap_attributes['mail'] - ] - ) - - if len(conn.response) == 1: - attrs = conn.response[0]['attributes'] - mail = attrs[self.ldap_attributes['mail']][0] - name = attrs[self.ldap_attributes['name']][0] - - # create account - registration_handler = self.hs.get_handlers().registration_handler - user_id, access_token = ( - yield registration_handler.register(localpart=localpart) - ) - - # TODO: bind email, set displayname with data from ldap directory - - logger.info( - "Registration based on LDAP data was successful: %d: %s (%s, %)", - user_id, - localpart, - name, - mail - ) - - defer.returnValue(True) - else: - if len(conn.response) == 0: - logger.warn("LDAP registration failed, no result.") - else: - logger.warn( - "LDAP registration failed, too many results (%s)", - len(conn.response) - ) - - defer.returnValue(False) - - defer.returnValue(False) - - except ldap3.core.exceptions.LDAPException as e: - logger.warn("Error during ldap authentication: %s", e) - defer.returnValue(False) - @defer.inlineCallbacks def issue_access_token(self, user_id, device_id=None): access_token = self.generate_access_token(user_id) @@ -942,3 +659,30 @@ class AuthHandler(BaseHandler): stored_hash.encode('utf-8')) == stored_hash else: return False + + +class _AccountHandler(object): + """A proxy object that gets passed to password auth providers so they + can register new users etc if necessary. + """ + def __init__(self, hs, check_user_exists): + self.hs = hs + + self._check_user_exists = check_user_exists + + def check_user_exists(self, user_id): + """Check if user exissts. + + Returns: + Deferred(bool) + """ + return self._check_user_exists(user_id) + + def register(self, localpart): + """Registers a new user with given localpart + + Returns: + Deferred: a 2-tuple of (user_id, access_token) + """ + reg = self.hs.get_handlers().registration_handler + return reg.register(localpart=localpart) diff --git a/synapse/replication/resource.py b/synapse/replication/resource.py index 9aab3ce23c..5a14c51d23 100644 --- a/synapse/replication/resource.py +++ b/synapse/replication/resource.py @@ -17,6 +17,7 @@ from synapse.http.servlet import parse_integer, parse_string from synapse.http.server import request_handler, finish_request from synapse.replication.pusher_resource import PusherResource from synapse.replication.presence_resource import PresenceResource +from synapse.api.errors import SynapseError from twisted.web.resource import Resource from twisted.web.server import NOT_DONE_YET @@ -166,7 +167,8 @@ class ReplicationResource(Resource): def replicate(): return self.replicate(request_streams, limit) - result = yield self.notifier.wait_for_replication(replicate, timeout) + writer = yield self.notifier.wait_for_replication(replicate, timeout) + result = writer.finish() for stream_name, stream_content in result.items(): logger.info( @@ -186,6 +188,9 @@ class ReplicationResource(Resource): current_token = yield self.current_replication_token() logger.debug("Replicating up to %r", current_token) + if limit == 0: + raise SynapseError(400, "Limit cannot be 0") + yield self.account_data(writer, current_token, limit, request_streams) yield self.events(writer, current_token, limit, request_streams) # TODO: implement limit @@ -200,7 +205,7 @@ class ReplicationResource(Resource): self.streams(writer, current_token, request_streams) logger.debug("Replicated %d rows", writer.total) - defer.returnValue(writer.finish()) + defer.returnValue(writer) def streams(self, writer, current_token, request_streams): request_token = request_streams.get("streams") @@ -237,27 +242,48 @@ class ReplicationResource(Resource): request_events = current_token.events if request_backfill is None: request_backfill = current_token.backfill + + no_new_tokens = ( + request_events == current_token.events + and request_backfill == current_token.backfill + ) + if no_new_tokens: + return + res = yield self.store.get_all_new_events( request_backfill, request_events, current_token.backfill, current_token.events, limit ) - writer.write_header_and_rows("events", res.new_forward_events, ( - "position", "internal", "json", "state_group" - )) - writer.write_header_and_rows("backfill", res.new_backfill_events, ( - "position", "internal", "json", "state_group" - )) + + upto_events_token = _position_from_rows( + res.new_forward_events, current_token.events + ) + + upto_backfill_token = _position_from_rows( + res.new_backfill_events, current_token.backfill + ) + + if request_events != upto_events_token: + writer.write_header_and_rows("events", res.new_forward_events, ( + "position", "internal", "json", "state_group" + ), position=upto_events_token) + + if request_backfill != upto_backfill_token: + writer.write_header_and_rows("backfill", res.new_backfill_events, ( + "position", "internal", "json", "state_group", + ), position=upto_backfill_token) + writer.write_header_and_rows( "forward_ex_outliers", res.forward_ex_outliers, - ("position", "event_id", "state_group") + ("position", "event_id", "state_group"), ) writer.write_header_and_rows( "backward_ex_outliers", res.backward_ex_outliers, - ("position", "event_id", "state_group") + ("position", "event_id", "state_group"), ) writer.write_header_and_rows( - "state_resets", res.state_resets, ("position",) + "state_resets", res.state_resets, ("position",), ) @defer.inlineCallbacks @@ -266,15 +292,16 @@ class ReplicationResource(Resource): request_presence = request_streams.get("presence") - if request_presence is not None: + if request_presence is not None and request_presence != current_position: presence_rows = yield self.presence_handler.get_all_presence_updates( request_presence, current_position ) + upto_token = _position_from_rows(presence_rows, current_position) writer.write_header_and_rows("presence", presence_rows, ( "position", "user_id", "state", "last_active_ts", "last_federation_update_ts", "last_user_sync_ts", "status_msg", "currently_active", - )) + ), position=upto_token) @defer.inlineCallbacks def typing(self, writer, current_token, request_streams): @@ -282,7 +309,7 @@ class ReplicationResource(Resource): request_typing = request_streams.get("typing") - if request_typing is not None: + if request_typing is not None and request_typing != current_position: # If they have a higher token than current max, we can assume that # they had been talking to a previous instance of the master. Since # we reset the token on restart, the best (but hacky) thing we can @@ -293,9 +320,10 @@ class ReplicationResource(Resource): typing_rows = yield self.typing_handler.get_all_typing_updates( request_typing, current_position ) + upto_token = _position_from_rows(typing_rows, current_position) writer.write_header_and_rows("typing", typing_rows, ( "position", "room_id", "typing" - )) + ), position=upto_token) @defer.inlineCallbacks def receipts(self, writer, current_token, limit, request_streams): @@ -303,13 +331,14 @@ class ReplicationResource(Resource): request_receipts = request_streams.get("receipts") - if request_receipts is not None: + if request_receipts is not None and request_receipts != current_position: receipts_rows = yield self.store.get_all_updated_receipts( request_receipts, current_position, limit ) + upto_token = _position_from_rows(receipts_rows, current_position) writer.write_header_and_rows("receipts", receipts_rows, ( "position", "room_id", "receipt_type", "user_id", "event_id", "data" - )) + ), position=upto_token) @defer.inlineCallbacks def account_data(self, writer, current_token, limit, request_streams): @@ -324,23 +353,36 @@ class ReplicationResource(Resource): user_account_data = current_position if room_account_data is None: room_account_data = current_position + + no_new_tokens = ( + user_account_data == current_position + and room_account_data == current_position + ) + if no_new_tokens: + return + user_rows, room_rows = yield self.store.get_all_updated_account_data( user_account_data, room_account_data, current_position, limit ) + + upto_users_token = _position_from_rows(user_rows, current_position) + upto_rooms_token = _position_from_rows(room_rows, current_position) + writer.write_header_and_rows("user_account_data", user_rows, ( "position", "user_id", "type", "content" - )) + ), position=upto_users_token) writer.write_header_and_rows("room_account_data", room_rows, ( "position", "user_id", "room_id", "type", "content" - )) + ), position=upto_rooms_token) if tag_account_data is not None: tag_rows = yield self.store.get_all_updated_tags( tag_account_data, current_position, limit ) + upto_tag_token = _position_from_rows(tag_rows, current_position) writer.write_header_and_rows("tag_account_data", tag_rows, ( "position", "user_id", "room_id", "tags" - )) + ), position=upto_tag_token) @defer.inlineCallbacks def push_rules(self, writer, current_token, limit, request_streams): @@ -348,14 +390,15 @@ class ReplicationResource(Resource): push_rules = request_streams.get("push_rules") - if push_rules is not None: + if push_rules is not None and push_rules != current_position: rows = yield self.store.get_all_push_rule_updates( push_rules, current_position, limit ) + upto_token = _position_from_rows(rows, current_position) writer.write_header_and_rows("push_rules", rows, ( "position", "event_stream_ordering", "user_id", "rule_id", "op", "priority_class", "priority", "conditions", "actions" - )) + ), position=upto_token) @defer.inlineCallbacks def pushers(self, writer, current_token, limit, request_streams): @@ -363,18 +406,19 @@ class ReplicationResource(Resource): pushers = request_streams.get("pushers") - if pushers is not None: + if pushers is not None and pushers != current_position: updated, deleted = yield self.store.get_all_updated_pushers( pushers, current_position, limit ) + upto_token = _position_from_rows(updated, current_position) writer.write_header_and_rows("pushers", updated, ( "position", "user_id", "access_token", "profile_tag", "kind", "app_id", "app_display_name", "device_display_name", "pushkey", "ts", "lang", "data" - )) + ), position=upto_token) writer.write_header_and_rows("deleted_pushers", deleted, ( "position", "user_id", "app_id", "pushkey" - )) + ), position=upto_token) @defer.inlineCallbacks def caches(self, writer, current_token, limit, request_streams): @@ -382,13 +426,14 @@ class ReplicationResource(Resource): caches = request_streams.get("caches") - if caches is not None: + if caches is not None and caches != current_position: updated_caches = yield self.store.get_all_updated_caches( caches, current_position, limit ) + upto_token = _position_from_rows(updated_caches, current_position) writer.write_header_and_rows("caches", updated_caches, ( "position", "cache_func", "keys", "invalidation_ts" - )) + ), position=upto_token) @defer.inlineCallbacks def to_device(self, writer, current_token, limit, request_streams): @@ -396,13 +441,14 @@ class ReplicationResource(Resource): to_device = request_streams.get("to_device") - if to_device is not None: + if to_device is not None and to_device != current_position: to_device_rows = yield self.store.get_all_new_device_messages( to_device, current_position, limit ) + upto_token = _position_from_rows(to_device_rows, current_position) writer.write_header_and_rows("to_device", to_device_rows, ( "position", "user_id", "device_id", "message_json" - )) + ), position=upto_token) @defer.inlineCallbacks def public_rooms(self, writer, current_token, limit, request_streams): @@ -410,13 +456,14 @@ class ReplicationResource(Resource): public_rooms = request_streams.get("public_rooms") - if public_rooms is not None: + if public_rooms is not None and public_rooms != current_position: public_rooms_rows = yield self.store.get_all_new_public_rooms( public_rooms, current_position, limit ) + upto_token = _position_from_rows(public_rooms_rows, current_position) writer.write_header_and_rows("public_rooms", public_rooms_rows, ( "position", "room_id", "visibility" - )) + ), position=upto_token) class _Writer(object): @@ -426,11 +473,11 @@ class _Writer(object): self.total = 0 def write_header_and_rows(self, name, rows, fields, position=None): - if not rows: - return - if position is None: - position = rows[-1][0] + if rows: + position = rows[-1][0] + else: + return self.streams[name] = { "position": position if type(position) is int else str(position), @@ -440,6 +487,9 @@ class _Writer(object): self.total += len(rows) + def __nonzero__(self): + return bool(self.total) + def finish(self): return self.streams @@ -461,3 +511,20 @@ class _ReplicationToken(collections.namedtuple("_ReplicationToken", ( def __str__(self): return "_".join(str(value) for value in self) + + +def _position_from_rows(rows, current_position): + """Calculates a position to return for a stream. Ideally we want to return the + position of the last row, as that will be the most correct. However, if there + are no rows we fall back to using the current position to stop us from + repeatedly hitting the storage layer unncessarily thinking there are updates. + (Not all advances of the token correspond to an actual update) + + We can't just always return the current position, as we often limit the + number of rows we replicate, and so the stream may lag. The assumption is + that if the storage layer returns no new rows then we are not lagging and + we are at the `current_position`. + """ + if rows: + return rows[-1][0] + return current_position diff --git a/synapse/rest/key/v2/local_key_resource.py b/synapse/rest/key/v2/local_key_resource.py index 93e5b1cbf0..ff95269ba8 100644 --- a/synapse/rest/key/v2/local_key_resource.py +++ b/synapse/rest/key/v2/local_key_resource.py @@ -19,8 +19,6 @@ from synapse.http.server import respond_with_json_bytes from signedjson.sign import sign_json from unpaddedbase64 import encode_base64 from canonicaljson import encode_canonical_json -from hashlib import sha256 -from OpenSSL import crypto import logging @@ -48,8 +46,12 @@ class LocalKey(Resource): "expired_ts": # integer posix timestamp when the key expired. "key": # base64 encoded NACL verification key. } - } - "tls_certificate": # base64 ASN.1 DER encoded X.509 tls cert. + }, + "tls_fingerprints": [ # Fingerprints of the TLS certs this server uses. + { + "sha256": # base64 encoded sha256 fingerprint of the X509 cert + }, + ], "signatures": { "this.server.example.com": { "algorithm:version": # NACL signature for this server @@ -90,21 +92,14 @@ class LocalKey(Resource): u"expired_ts": key.expired, } - x509_certificate_bytes = crypto.dump_certificate( - crypto.FILETYPE_ASN1, - self.config.tls_certificate - ) - - sha256_fingerprint = sha256(x509_certificate_bytes).digest() + tls_fingerprints = self.config.tls_fingerprints json_object = { u"valid_until_ts": self.valid_until_ts, u"server_name": self.config.server_name, u"verify_keys": verify_keys, u"old_verify_keys": old_verify_keys, - u"tls_fingerprints": [{ - u"sha256": encode_base64(sha256_fingerprint), - }] + u"tls_fingerprints": tls_fingerprints, } for key in self.config.signing_key: json_object = sign_json( diff --git a/synapse/storage/room.py b/synapse/storage/room.py index 2ef13d7403..11813b44f6 100644 --- a/synapse/storage/room.py +++ b/synapse/storage/room.py @@ -320,6 +320,9 @@ class RoomStore(SQLBaseStore): txn.execute(sql, (prev_id, current_id, limit,)) return txn.fetchall() + if prev_id == current_id: + return defer.succeed([]) + return self.runInteraction( "get_all_new_public_rooms", get_all_new_public_rooms ) diff --git a/synapse/util/ldap_auth_provider.py b/synapse/util/ldap_auth_provider.py new file mode 100644 index 0000000000..f852e9b037 --- /dev/null +++ b/synapse/util/ldap_auth_provider.py @@ -0,0 +1,368 @@ + +from twisted.internet import defer + +from synapse.config._base import ConfigError +from synapse.types import UserID + +import ldap3 +import ldap3.core.exceptions + +import logging + +try: + import ldap3 + import ldap3.core.exceptions +except ImportError: + ldap3 = None + pass + + +logger = logging.getLogger(__name__) + + +class LDAPMode(object): + SIMPLE = "simple", + SEARCH = "search", + + LIST = (SIMPLE, SEARCH) + + +class LdapAuthProvider(object): + __version__ = "0.1" + + def __init__(self, config, account_handler): + self.account_handler = account_handler + + if not ldap3: + raise RuntimeError( + 'Missing ldap3 library. This is required for LDAP Authentication.' + ) + + self.ldap_mode = config.mode + self.ldap_uri = config.uri + self.ldap_start_tls = config.start_tls + self.ldap_base = config.base + self.ldap_attributes = config.attributes + if self.ldap_mode == LDAPMode.SEARCH: + self.ldap_bind_dn = config.bind_dn + self.ldap_bind_password = config.bind_password + self.ldap_filter = config.filter + + @defer.inlineCallbacks + def check_password(self, user_id, password): + """ Attempt to authenticate a user against an LDAP Server + and register an account if none exists. + + Returns: + True if authentication against LDAP was successful + """ + localpart = UserID.from_string(user_id).localpart + + try: + server = ldap3.Server(self.ldap_uri) + logger.debug( + "Attempting LDAP connection with %s", + self.ldap_uri + ) + + if self.ldap_mode == LDAPMode.SIMPLE: + result, conn = self._ldap_simple_bind( + server=server, localpart=localpart, password=password + ) + logger.debug( + 'LDAP authentication method simple bind returned: %s (conn: %s)', + result, + conn + ) + if not result: + defer.returnValue(False) + elif self.ldap_mode == LDAPMode.SEARCH: + result, conn = self._ldap_authenticated_search( + server=server, localpart=localpart, password=password + ) + logger.debug( + 'LDAP auth method authenticated search returned: %s (conn: %s)', + result, + conn + ) + if not result: + defer.returnValue(False) + else: + raise RuntimeError( + 'Invalid LDAP mode specified: {mode}'.format( + mode=self.ldap_mode + ) + ) + + try: + logger.info( + "User authenticated against LDAP server: %s", + conn + ) + except NameError: + logger.warn( + "Authentication method yielded no LDAP connection, aborting!" + ) + defer.returnValue(False) + + # check if user with user_id exists + if (yield self.account_handler.check_user_exists(user_id)): + # exists, authentication complete + conn.unbind() + defer.returnValue(True) + + else: + # does not exist, fetch metadata for account creation from + # existing ldap connection + query = "({prop}={value})".format( + prop=self.ldap_attributes['uid'], + value=localpart + ) + + if self.ldap_mode == LDAPMode.SEARCH and self.ldap_filter: + query = "(&{filter}{user_filter})".format( + filter=query, + user_filter=self.ldap_filter + ) + logger.debug( + "ldap registration filter: %s", + query + ) + + conn.search( + search_base=self.ldap_base, + search_filter=query, + attributes=[ + self.ldap_attributes['name'], + self.ldap_attributes['mail'] + ] + ) + + if len(conn.response) == 1: + attrs = conn.response[0]['attributes'] + mail = attrs[self.ldap_attributes['mail']][0] + name = attrs[self.ldap_attributes['name']][0] + + # create account + user_id, access_token = ( + yield self.account_handler.register(localpart=localpart) + ) + + # TODO: bind email, set displayname with data from ldap directory + + logger.info( + "Registration based on LDAP data was successful: %d: %s (%s, %)", + user_id, + localpart, + name, + mail + ) + + defer.returnValue(True) + else: + if len(conn.response) == 0: + logger.warn("LDAP registration failed, no result.") + else: + logger.warn( + "LDAP registration failed, too many results (%s)", + len(conn.response) + ) + + defer.returnValue(False) + + defer.returnValue(False) + + except ldap3.core.exceptions.LDAPException as e: + logger.warn("Error during ldap authentication: %s", e) + defer.returnValue(False) + + @staticmethod + def parse_config(config): + class _LdapConfig(object): + pass + + ldap_config = _LdapConfig() + + ldap_config.enabled = config.get("enabled", False) + + ldap_config.mode = LDAPMode.SIMPLE + + # verify config sanity + _require_keys(config, [ + "uri", + "base", + "attributes", + ]) + + ldap_config.uri = config["uri"] + ldap_config.start_tls = config.get("start_tls", False) + ldap_config.base = config["base"] + ldap_config.attributes = config["attributes"] + + if "bind_dn" in config: + ldap_config.mode = LDAPMode.SEARCH + _require_keys(config, [ + "bind_dn", + "bind_password", + ]) + + ldap_config.bind_dn = config["bind_dn"] + ldap_config.bind_password = config["bind_password"] + ldap_config.filter = config.get("filter", None) + + # verify attribute lookup + _require_keys(config['attributes'], [ + "uid", + "name", + "mail", + ]) + + return ldap_config + + def _ldap_simple_bind(self, server, localpart, password): + """ Attempt a simple bind with the credentials + given by the user against the LDAP server. + + Returns True, LDAP3Connection + if the bind was successful + Returns False, None + if an error occured + """ + + try: + # bind with the the local users ldap credentials + bind_dn = "{prop}={value},{base}".format( + prop=self.ldap_attributes['uid'], + value=localpart, + base=self.ldap_base + ) + conn = ldap3.Connection(server, bind_dn, password) + logger.debug( + "Established LDAP connection in simple bind mode: %s", + conn + ) + + if self.ldap_start_tls: + conn.start_tls() + logger.debug( + "Upgraded LDAP connection in simple bind mode through StartTLS: %s", + conn + ) + + if conn.bind(): + # GOOD: bind okay + logger.debug("LDAP Bind successful in simple bind mode.") + return True, conn + + # BAD: bind failed + logger.info( + "Binding against LDAP failed for '%s' failed: %s", + localpart, conn.result['description'] + ) + conn.unbind() + return False, None + + except ldap3.core.exceptions.LDAPException as e: + logger.warn("Error during LDAP authentication: %s", e) + return False, None + + def _ldap_authenticated_search(self, server, localpart, password): + """ Attempt to login with the preconfigured bind_dn + and then continue searching and filtering within + the base_dn + + Returns (True, LDAP3Connection) + if a single matching DN within the base was found + that matched the filter expression, and with which + a successful bind was achieved + + The LDAP3Connection returned is the instance that was used to + verify the password not the one using the configured bind_dn. + Returns (False, None) + if an error occured + """ + + try: + conn = ldap3.Connection( + server, + self.ldap_bind_dn, + self.ldap_bind_password + ) + logger.debug( + "Established LDAP connection in search mode: %s", + conn + ) + + if self.ldap_start_tls: + conn.start_tls() + logger.debug( + "Upgraded LDAP connection in search mode through StartTLS: %s", + conn + ) + + if not conn.bind(): + logger.warn( + "Binding against LDAP with `bind_dn` failed: %s", + conn.result['description'] + ) + conn.unbind() + return False, None + + # construct search_filter like (uid=localpart) + query = "({prop}={value})".format( + prop=self.ldap_attributes['uid'], + value=localpart + ) + if self.ldap_filter: + # combine with the AND expression + query = "(&{query}{filter})".format( + query=query, + filter=self.ldap_filter + ) + logger.debug( + "LDAP search filter: %s", + query + ) + conn.search( + search_base=self.ldap_base, + search_filter=query + ) + + if len(conn.response) == 1: + # GOOD: found exactly one result + user_dn = conn.response[0]['dn'] + logger.debug('LDAP search found dn: %s', user_dn) + + # unbind and simple bind with user_dn to verify the password + # Note: do not use rebind(), for some reason it did not verify + # the password for me! + conn.unbind() + return self._ldap_simple_bind(server, localpart, password) + else: + # BAD: found 0 or > 1 results, abort! + if len(conn.response) == 0: + logger.info( + "LDAP search returned no results for '%s'", + localpart + ) + else: + logger.info( + "LDAP search returned too many (%s) results for '%s'", + len(conn.response), localpart + ) + conn.unbind() + return False, None + + except ldap3.core.exceptions.LDAPException as e: + logger.warn("Error during LDAP authentication: %s", e) + return False, None + + +def _require_keys(config, required): + missing = [key for key in required if key not in config] + if missing: + raise ConfigError( + "LDAP enabled but missing required config values: {}".format( + ", ".join(missing) + ) + ) |