diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/__init__.py | 2 | ||||
| -rw-r--r-- | synapse/api/auth.py | 135 | ||||
| -rwxr-xr-x | synapse/app/homeserver.py | 9 | ||||
| -rw-r--r-- | synapse/config/_base.py | 2 | ||||
| -rw-r--r-- | synapse/config/logger.py | 14 | ||||
| -rw-r--r-- | synapse/config/tls.py | 8 | ||||
| -rw-r--r-- | synapse/crypto/keyring.py | 31 | ||||
| -rw-r--r-- | synapse/handlers/_base.py | 17 | ||||
| -rw-r--r-- | synapse/handlers/auth.py | 3 | ||||
| -rw-r--r-- | synapse/http/client.py | 26 | ||||
| -rw-r--r-- | synapse/http/matrixfederationclient.py | 4 | ||||
| -rw-r--r-- | synapse/metrics/__init__.py | 11 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/account.py | 1 | ||||
| -rw-r--r-- | synapse/server.py | 15 | ||||
| -rw-r--r-- | synapse/state.py | 3 | ||||
| -rw-r--r-- | synapse/storage/event_federation.py | 9 | ||||
| -rw-r--r-- | synapse/storage/events.py | 2 | ||||
| -rw-r--r-- | synapse/storage/schema/delta/23/drop_state_index.sql | 16 |
18 files changed, 264 insertions, 44 deletions
diff --git a/synapse/__init__.py b/synapse/__init__.py index 57b8304d35..d62294e6bb 100644 --- a/synapse/__init__.py +++ b/synapse/__init__.py @@ -16,4 +16,4 @@ """ This is a reference implementation of a Matrix home server. """ -__version__ = "0.10.0-rc5" +__version__ = "0.10.0-r2" diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 65ee1452ce..df788230fa 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -20,9 +20,10 @@ from twisted.internet import defer from synapse.api.constants import EventTypes, Membership, JoinRules from synapse.api.errors import AuthError, Codes, SynapseError from synapse.util.logutils import log_function -from synapse.types import UserID +from synapse.types import UserID, EventID import logging +import pymacaroons logger = logging.getLogger(__name__) @@ -40,6 +41,12 @@ class Auth(object): self.store = hs.get_datastore() self.state = hs.get_state_handler() self.TOKEN_NOT_FOUND_HTTP_STATUS = 401 + self._KNOWN_CAVEAT_PREFIXES = set([ + "gen = ", + "type = ", + "time < ", + "user_id = ", + ]) def check(self, event, auth_events): """ Checks if this event is correctly authed. @@ -65,6 +72,14 @@ class Auth(object): # FIXME return True + creation_event = auth_events.get((EventTypes.Create, ""), None) + + if not creation_event: + raise SynapseError( + 403, + "Room %r does not exist" % (event.room_id,) + ) + # FIXME: Temp hack if event.type == EventTypes.Aliases: return True @@ -91,7 +106,7 @@ class Auth(object): self._check_power_levels(event, auth_events) if event.type == EventTypes.Redaction: - self._check_redaction(event, auth_events) + self.check_redaction(event, auth_events) logger.debug("Allowing! %s", event) except AuthError as e: @@ -359,7 +374,7 @@ class Auth(object): except KeyError: pass # normal users won't have the user_id query parameter set. - user_info = yield self.get_user_by_access_token(access_token) + user_info = yield self._get_user_by_access_token(access_token) user = user_info["user"] token_id = user_info["token_id"] @@ -386,7 +401,7 @@ class Auth(object): ) @defer.inlineCallbacks - def get_user_by_access_token(self, token): + def _get_user_by_access_token(self, token): """ Get a registered user's ID. Args: @@ -396,6 +411,86 @@ class Auth(object): Raises: AuthError if no user by that token exists or the token is invalid. """ + try: + ret = yield self._get_user_from_macaroon(token) + except AuthError: + # TODO(daniel): Remove this fallback when all existing access tokens + # have been re-issued as macaroons. + ret = yield self._look_up_user_by_access_token(token) + defer.returnValue(ret) + + @defer.inlineCallbacks + def _get_user_from_macaroon(self, macaroon_str): + try: + macaroon = pymacaroons.Macaroon.deserialize(macaroon_str) + self._validate_macaroon(macaroon) + + user_prefix = "user_id = " + for caveat in macaroon.caveats: + if caveat.caveat_id.startswith(user_prefix): + user = UserID.from_string(caveat.caveat_id[len(user_prefix):]) + # This codepath exists so that we can actually return a + # token ID, because we use token IDs in place of device + # identifiers throughout the codebase. + # TODO(daniel): Remove this fallback when device IDs are + # properly implemented. + ret = yield self._look_up_user_by_access_token(macaroon_str) + if ret["user"] != user: + logger.error( + "Macaroon user (%s) != DB user (%s)", + user, + ret["user"] + ) + raise AuthError( + self.TOKEN_NOT_FOUND_HTTP_STATUS, + "User mismatch in macaroon", + errcode=Codes.UNKNOWN_TOKEN + ) + defer.returnValue(ret) + raise AuthError( + self.TOKEN_NOT_FOUND_HTTP_STATUS, "No user caveat in macaroon", + errcode=Codes.UNKNOWN_TOKEN + ) + except (pymacaroons.exceptions.MacaroonException, TypeError, ValueError): + raise AuthError( + self.TOKEN_NOT_FOUND_HTTP_STATUS, "Invalid macaroon passed.", + errcode=Codes.UNKNOWN_TOKEN + ) + + def _validate_macaroon(self, macaroon): + v = pymacaroons.Verifier() + v.satisfy_exact("gen = 1") + v.satisfy_exact("type = access") + v.satisfy_general(lambda c: c.startswith("user_id = ")) + v.satisfy_general(self._verify_expiry) + v.verify(macaroon, self.hs.config.macaroon_secret_key) + + v = pymacaroons.Verifier() + v.satisfy_general(self._verify_recognizes_caveats) + v.verify(macaroon, self.hs.config.macaroon_secret_key) + + def _verify_expiry(self, caveat): + prefix = "time < " + if not caveat.startswith(prefix): + return False + # TODO(daniel): Enable expiry check when clients actually know how to + # refresh tokens. (And remember to enable the tests) + return True + expiry = int(caveat[len(prefix):]) + now = self.hs.get_clock().time_msec() + return now < expiry + + def _verify_recognizes_caveats(self, caveat): + first_space = caveat.find(" ") + if first_space < 0: + return False + second_space = caveat.find(" ", first_space + 1) + if second_space < 0: + return False + return caveat[:second_space + 1] in self._KNOWN_CAVEAT_PREFIXES + + @defer.inlineCallbacks + def _look_up_user_by_access_token(self, token): ret = yield self.store.get_user_by_access_token(token) if not ret: raise AuthError( @@ -406,7 +501,6 @@ class Auth(object): "user": UserID.from_string(ret.get("name")), "token_id": ret.get("token_id", None), } - defer.returnValue(user_info) @defer.inlineCallbacks @@ -541,16 +635,35 @@ class Auth(object): return True - def _check_redaction(self, event, auth_events): + def check_redaction(self, event, auth_events): + """Check whether the event sender is allowed to redact the target event. + + Returns: + True if the the sender is allowed to redact the target event if the + target event was created by them. + False if the sender is allowed to redact the target event with no + further checks. + + Raises: + AuthError if the event sender is definitely not allowed to redact + the target event. + """ user_level = self._get_user_power_level(event.user_id, auth_events) redact_level = self._get_named_level(auth_events, "redact", 50) - if user_level < redact_level: - raise AuthError( - 403, - "You don't have permission to redact events" - ) + if user_level > redact_level: + return False + + redacter_domain = EventID.from_string(event.event_id).domain + redactee_domain = EventID.from_string(event.redacts).domain + if redacter_domain == redactee_domain: + return True + + raise AuthError( + 403, + "You don't have permission to redact events" + ) def _check_power_levels(self, event, auth_events): user_list = event.content.get("users", {}) diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py index 2a85932b86..15c0a4a003 100755 --- a/synapse/app/homeserver.py +++ b/synapse/app/homeserver.py @@ -234,7 +234,7 @@ class SynapseHomeServer(HomeServer): listener_config, root_resource, ), - self.tls_context_factory, + self.tls_server_context_factory, interface=bind_address ) else: @@ -354,7 +354,7 @@ def get_version_string(): ) ).encode("ascii") except Exception as e: - logger.warn("Failed to check for git repository: %s", e) + logger.info("Failed to check for git repository: %s", e) return ("Synapse/%s" % (synapse.__version__,)).encode("ascii") @@ -378,7 +378,6 @@ def setup(config_options): Args: config_options_options: The options passed to Synapse. Usually `sys.argv[1:]`. - should_run (bool): Whether to start the reactor. Returns: HomeServer @@ -401,7 +400,7 @@ def setup(config_options): events.USE_FROZEN_DICTS = config.use_frozen_dicts - tls_context_factory = context_factory.ServerContextFactory(config) + tls_server_context_factory = context_factory.ServerContextFactory(config) database_engine = create_engine(config.database_config["name"]) config.database_config["args"]["cp_openfun"] = database_engine.on_new_connection @@ -409,7 +408,7 @@ def setup(config_options): hs = SynapseHomeServer( config.server_name, db_config=config.database_config, - tls_context_factory=tls_context_factory, + tls_server_context_factory=tls_server_context_factory, config=config, content_addr=config.content_addr, version_string=version_string, diff --git a/synapse/config/_base.py b/synapse/config/_base.py index 1a6784a714..8a75c48733 100644 --- a/synapse/config/_base.py +++ b/synapse/config/_base.py @@ -182,7 +182,7 @@ class Config(object): ) % (entry_path, ) continue - files.add(config_path) + files.append(entry_path) config_files.extend(sorted(files)) else: diff --git a/synapse/config/logger.py b/synapse/config/logger.py index fa542623b7..daca698d0c 100644 --- a/synapse/config/logger.py +++ b/synapse/config/logger.py @@ -21,6 +21,7 @@ import logging.config import yaml from string import Template import os +import signal DEFAULT_LOG_CONFIG = Template(""" @@ -142,6 +143,19 @@ class LoggingConfig(Config): handler = logging.handlers.RotatingFileHandler( self.log_file, maxBytes=(1000 * 1000 * 100), backupCount=3 ) + + def sighup(signum, stack): + logger.info("Closing log file due to SIGHUP") + handler.doRollover() + logger.info("Opened new log file due to SIGHUP") + + # TODO(paul): obviously this is a terrible mechanism for + # stealing SIGHUP, because it means no other part of synapse + # can use it instead. If we want to catch SIGHUP anywhere + # else as well, I'd suggest we find a nicer way to broadcast + # it around. + if getattr(signal, "SIGHUP"): + signal.signal(signal.SIGHUP, sighup) else: handler = logging.StreamHandler() handler.setFormatter(formatter) diff --git a/synapse/config/tls.py b/synapse/config/tls.py index 4751d39bc9..e6023a718d 100644 --- a/synapse/config/tls.py +++ b/synapse/config/tls.py @@ -42,6 +42,14 @@ class TlsConfig(Config): config.get("tls_dh_params_path"), "tls_dh_params" ) + # 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 + # use only when running tests. + self.use_insecure_ssl_client_just_for_testing_do_not_use = config.get( + "use_insecure_ssl_client_just_for_testing_do_not_use" + ) + def default_config(self, config_dir_path, server_name): base_key_name = os.path.join(config_dir_path, server_name) diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py index a692cdbe55..1b1b31c5c0 100644 --- a/synapse/crypto/keyring.py +++ b/synapse/crypto/keyring.py @@ -162,7 +162,9 @@ class Keyring(object): def remove_deferreds(res, server_name, group_id): server_to_gids[server_name].discard(group_id) if not server_to_gids[server_name]: - server_to_deferred.pop(server_name).callback(None) + d = server_to_deferred.pop(server_name, None) + if d: + d.callback(None) return res for g_id, deferred in deferreds.items(): @@ -200,8 +202,15 @@ class Keyring(object): else: break - for server_name, deferred in server_to_deferred: - self.key_downloads[server_name] = ObservableDeferred(deferred) + for server_name, deferred in server_to_deferred.items(): + d = ObservableDeferred(deferred) + self.key_downloads[server_name] = d + + def rm(r, server_name): + self.key_downloads.pop(server_name, None) + return r + + d.addBoth(rm, server_name) def get_server_verify_keys(self, group_id_to_group, group_id_to_deferred): """Takes a dict of KeyGroups and tries to find at least one key for @@ -220,9 +229,8 @@ class Keyring(object): merged_results = {} missing_keys = { - group.server_name: key_id + group.server_name: set(group.key_ids) for group in group_id_to_group.values() - for key_id in group.key_ids } for fn in key_fetch_fns: @@ -279,16 +287,15 @@ class Keyring(object): def get_keys_from_store(self, server_name_and_key_ids): res = yield defer.gatherResults( [ - self.store.get_server_verify_keys(server_name, key_ids) + self.store.get_server_verify_keys( + server_name, key_ids + ).addCallback(lambda ks, server: (server, ks), server_name) for server_name, key_ids in server_name_and_key_ids ], consumeErrors=True, ).addErrback(unwrapFirstError) - defer.returnValue(dict(zip( - [server_name for server_name, _ in server_name_and_key_ids], - res - ))) + defer.returnValue(dict(res)) @defer.inlineCallbacks def get_keys_from_perspectives(self, server_name_and_key_ids): @@ -463,7 +470,7 @@ class Keyring(object): continue (response, tls_certificate) = yield fetch_server_key( - server_name, self.hs.tls_context_factory, + server_name, self.hs.tls_server_context_factory, path=(b"/_matrix/key/v2/server/%s" % ( urllib.quote(requested_key_id), )).encode("ascii"), @@ -597,7 +604,7 @@ class Keyring(object): # Try to fetch the key from the remote server. (response, tls_certificate) = yield fetch_server_key( - server_name, self.hs.tls_context_factory + server_name, self.hs.tls_server_context_factory ) # Check the response. diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py index cb992143f5..60ac6617ae 100644 --- a/synapse/handlers/_base.py +++ b/synapse/handlers/_base.py @@ -15,7 +15,7 @@ from twisted.internet import defer -from synapse.api.errors import LimitExceededError, SynapseError +from synapse.api.errors import LimitExceededError, SynapseError, AuthError from synapse.crypto.event_signing import add_hashes_and_signatures from synapse.api.constants import Membership, EventTypes from synapse.types import UserID, RoomAlias @@ -146,6 +146,21 @@ class BaseHandler(object): returned_invite.signatures ) + if event.type == EventTypes.Redaction: + if self.auth.check_redaction(event, auth_events=context.current_state): + original_event = yield self.store.get_event( + event.redacts, + check_redacted=False, + get_prev_content=False, + allow_rejected=False, + allow_none=False + ) + if event.user_id != original_event.user_id: + raise AuthError( + 403, + "You don't have permission to redact events" + ) + destinations = set(extra_destinations) for k, s in context.current_state.items(): try: diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py index 59f687e0f1..793b3fcd8b 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -19,7 +19,6 @@ from ._base import BaseHandler from synapse.api.constants import LoginType from synapse.types import UserID from synapse.api.errors import LoginError, Codes -from synapse.http.client import SimpleHttpClient from synapse.util.async import run_on_reactor from twisted.web.client import PartialDownloadError @@ -187,7 +186,7 @@ class AuthHandler(BaseHandler): # TODO: get this from the homeserver rather than creating a new one for # each request try: - client = SimpleHttpClient(self.hs) + client = self.hs.get_simple_http_client() resp_body = yield client.post_urlencoded_get_json( self.hs.config.recaptcha_siteverify_api, args={ diff --git a/synapse/http/client.py b/synapse/http/client.py index 4b8fd3d3a3..0933388c04 100644 --- a/synapse/http/client.py +++ b/synapse/http/client.py @@ -12,6 +12,8 @@ # 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 OpenSSL import SSL +from OpenSSL.SSL import VERIFY_NONE from synapse.api.errors import CodeMessageException from synapse.util.logcontext import preserve_context_over_fn @@ -19,7 +21,7 @@ import synapse.metrics from canonicaljson import encode_canonical_json -from twisted.internet import defer, reactor +from twisted.internet import defer, reactor, ssl from twisted.web.client import ( Agent, readBody, FileBodyProducer, PartialDownloadError, HTTPConnectionPool, @@ -59,7 +61,12 @@ class SimpleHttpClient(object): # 'like a browser' pool = HTTPConnectionPool(reactor) pool.maxPersistentPerHost = 10 - self.agent = Agent(reactor, pool=pool) + self.agent = Agent( + reactor, + pool=pool, + connectTimeout=15, + contextFactory=hs.get_http_client_context_factory() + ) self.version_string = hs.version_string def request(self, method, uri, *args, **kwargs): @@ -252,3 +259,18 @@ def _print_ex(e): _print_ex(ex) else: logger.exception(e) + + +class InsecureInterceptableContextFactory(ssl.ContextFactory): + """ + Factory for PyOpenSSL SSL contexts which accepts any certificate for any domain. + + Do not use this since it allows an attacker to intercept your communications. + """ + + def __init__(self): + self._context = SSL.Context(SSL.SSLv23_METHOD) + self._context.set_verify(VERIFY_NONE, lambda *_: None) + + def getContext(self, hostname, port): + return self._context diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py index 1c9e552788..b50a0c445c 100644 --- a/synapse/http/matrixfederationclient.py +++ b/synapse/http/matrixfederationclient.py @@ -57,14 +57,14 @@ incoming_responses_counter = metrics.register_counter( class MatrixFederationEndpointFactory(object): def __init__(self, hs): - self.tls_context_factory = hs.tls_context_factory + self.tls_server_context_factory = hs.tls_server_context_factory def endpointForURI(self, uri): destination = uri.netloc return matrix_federation_endpoint( reactor, destination, timeout=10, - ssl_context_factory=self.tls_context_factory + ssl_context_factory=self.tls_server_context_factory ) diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py index d7bcad8a8a..943d637459 100644 --- a/synapse/metrics/__init__.py +++ b/synapse/metrics/__init__.py @@ -17,7 +17,7 @@ from __future__ import absolute_import import logging -from resource import getrusage, getpagesize, RUSAGE_SELF +from resource import getrusage, RUSAGE_SELF import functools import os import stat @@ -100,7 +100,6 @@ def render_all(): # process resource usage rusage = None -PAGE_SIZE = getpagesize() def update_resource_metrics(): @@ -113,8 +112,8 @@ resource_metrics = get_metrics_for("process.resource") resource_metrics.register_callback("utime", lambda: rusage.ru_utime * 1000) resource_metrics.register_callback("stime", lambda: rusage.ru_stime * 1000) -# pages -resource_metrics.register_callback("maxrss", lambda: rusage.ru_maxrss * PAGE_SIZE) +# kilobytes +resource_metrics.register_callback("maxrss", lambda: rusage.ru_maxrss * 1024) TYPES = { stat.S_IFSOCK: "SOCK", @@ -131,6 +130,10 @@ def _process_fds(): counts = {(k,): 0 for k in TYPES.values()} counts[("other",)] = 0 + # Not every OS will have a /proc/self/fd directory + if not os.path.exists("/proc/self/fd"): + return counts + for fd in os.listdir("/proc/self/fd"): try: s = os.stat("/proc/self/fd/%s" % (fd)) diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py index b5edffdb60..4692ba413c 100644 --- a/synapse/rest/client/v2_alpha/account.py +++ b/synapse/rest/client/v2_alpha/account.py @@ -96,6 +96,7 @@ class ThreepidRestServlet(RestServlet): self.hs = hs self.identity_handler = hs.get_handlers().identity_handler self.auth = hs.get_auth() + self.auth_handler = hs.get_handlers().auth_handler @defer.inlineCallbacks def on_GET(self, request): diff --git a/synapse/server.py b/synapse/server.py index 4d1fb1cbf6..8424798b1b 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -19,7 +19,9 @@ # partial one for unit test mocking. # Imports required for the default HomeServer() implementation +from twisted.web.client import BrowserLikePolicyForHTTPS from synapse.federation import initialize_http_replication +from synapse.http.client import SimpleHttpClient, InsecureInterceptableContextFactory from synapse.notifier import Notifier from synapse.api.auth import Auth from synapse.handlers import Handlers @@ -87,6 +89,8 @@ class BaseHomeServer(object): 'pusherpool', 'event_builder_factory', 'filtering', + 'http_client_context_factory', + 'simple_http_client', ] def __init__(self, hostname, **kwargs): @@ -174,6 +178,17 @@ class HomeServer(BaseHomeServer): def build_auth(self): return Auth(self) + def build_http_client_context_factory(self): + config = self.get_config() + return ( + InsecureInterceptableContextFactory() + if config.use_insecure_ssl_client_just_for_testing_do_not_use + else BrowserLikePolicyForHTTPS() + ) + + def build_simple_http_client(self): + return SimpleHttpClient(self) + def build_v1auth(self): orf = Auth(self) # Matrix spec makes no reference to what HTTP status code is returned, diff --git a/synapse/state.py b/synapse/state.py index 1fe4d066bd..ed36f844cb 100644 --- a/synapse/state.py +++ b/synapse/state.py @@ -17,7 +17,6 @@ from twisted.internet import defer from synapse.util.logutils import log_function -from synapse.util.async import run_on_reactor from synapse.util.caches.expiringcache import ExpiringCache from synapse.api.constants import EventTypes from synapse.api.errors import AuthError @@ -119,8 +118,6 @@ class StateHandler(object): Returns: an EventContext """ - yield run_on_reactor() - context = EventContext() if outlier: diff --git a/synapse/storage/event_federation.py b/synapse/storage/event_federation.py index 989ad340b0..c1cabbaa60 100644 --- a/synapse/storage/event_federation.py +++ b/synapse/storage/event_federation.py @@ -303,6 +303,15 @@ class EventFederationStore(SQLBaseStore): ], ) + self._update_extremeties(txn, events) + + def _update_extremeties(self, txn, events): + """Updates the event_*_extremities tables based on the new/updated + events being persisted. + + This is called for new events *and* for events that were outliers, but + are are now being persisted as non-outliers. + """ events_by_room = {} for ev in events: events_by_room.setdefault(ev.room_id, []).append(ev) diff --git a/synapse/storage/events.py b/synapse/storage/events.py index fba837f461..0a477e3122 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -281,6 +281,8 @@ class EventsStore(SQLBaseStore): (False, event.event_id,) ) + self._update_extremeties(txn, [event]) + events_and_contexts = filter( lambda ec: ec[0] not in to_remove, events_and_contexts diff --git a/synapse/storage/schema/delta/23/drop_state_index.sql b/synapse/storage/schema/delta/23/drop_state_index.sql new file mode 100644 index 0000000000..07d0ea5cb2 --- /dev/null +++ b/synapse/storage/schema/delta/23/drop_state_index.sql @@ -0,0 +1,16 @@ +/* Copyright 2015 OpenMarket Ltd + * + * 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. + */ + +DROP INDEX IF EXISTS state_groups_state_tuple; |