diff options
Diffstat (limited to 'synapse')
68 files changed, 791 insertions, 191 deletions
diff --git a/synapse/__init__.py b/synapse/__init__.py index faa183a99e..3cde33c0d7 100644 --- a/synapse/__init__.py +++ b/synapse/__init__.py @@ -17,4 +17,4 @@ """ This is a reference implementation of a Matrix home server. """ -__version__ = "0.31.2" +__version__ = "0.32.2" diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 66639b0089..088b4e8b6d 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -19,6 +19,7 @@ from six import itervalues import pymacaroons from twisted.internet import defer +from netaddr import IPAddress import synapse.types from synapse import event_auth @@ -244,6 +245,11 @@ class Auth(object): if app_service is None: defer.returnValue((None, None)) + if app_service.ip_range_whitelist: + ip_address = IPAddress(self.hs.get_ip_from_request(request)) + if ip_address not in app_service.ip_range_whitelist: + defer.returnValue((None, None)) + if "user_id" not in request.args: defer.returnValue((app_service.sender, app_service)) @@ -488,7 +494,7 @@ class Auth(object): def _look_up_user_by_access_token(self, token): ret = yield self.store.get_user_by_access_token(token) if not ret: - logger.warn("Unrecognised access token - not in store: %s" % (token,)) + logger.warn("Unrecognised access token - not in store.") raise AuthError( self.TOKEN_NOT_FOUND_HTTP_STATUS, "Unrecognised access token.", errcode=Codes.UNKNOWN_TOKEN @@ -511,7 +517,7 @@ class Auth(object): ) service = self.store.get_app_service_by_token(token) if not service: - logger.warn("Unrecognised appservice access token: %s" % (token,)) + logger.warn("Unrecognised appservice access token.") raise AuthError( self.TOKEN_NOT_FOUND_HTTP_STATUS, "Unrecognised access token.", diff --git a/synapse/api/constants.py b/synapse/api/constants.py index 5baba43966..4df930c8d1 100644 --- a/synapse/api/constants.py +++ b/synapse/api/constants.py @@ -76,6 +76,8 @@ class EventTypes(object): Topic = "m.room.topic" Name = "m.room.name" + ServerACL = "m.room.server_acl" + class RejectedReason(object): AUTH_ERROR = "auth_error" diff --git a/synapse/api/errors.py b/synapse/api/errors.py index e6ad3768f0..227a0713b2 100644 --- a/synapse/api/errors.py +++ b/synapse/api/errors.py @@ -17,7 +17,8 @@ import logging -import simplejson as json +from canonicaljson import json + from six import iteritems from six.moves import http_client diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py index dbc0e7e445..aae25e7a47 100644 --- a/synapse/api/filtering.py +++ b/synapse/api/filtering.py @@ -17,7 +17,8 @@ from synapse.storage.presence import UserPresenceState from synapse.types import UserID, RoomID from twisted.internet import defer -import simplejson as json +from canonicaljson import json + import jsonschema from jsonschema import FormatChecker diff --git a/synapse/appservice/__init__.py b/synapse/appservice/__init__.py index d1c598622a..328cbfa284 100644 --- a/synapse/appservice/__init__.py +++ b/synapse/appservice/__init__.py @@ -85,7 +85,8 @@ class ApplicationService(object): NS_LIST = [NS_USERS, NS_ALIASES, NS_ROOMS] def __init__(self, token, hostname, url=None, namespaces=None, hs_token=None, - sender=None, id=None, protocols=None, rate_limited=True): + sender=None, id=None, protocols=None, rate_limited=True, + ip_range_whitelist=None): self.token = token self.url = url self.hs_token = hs_token @@ -93,6 +94,7 @@ class ApplicationService(object): self.server_name = hostname self.namespaces = self._check_namespaces(namespaces) self.id = id + self.ip_range_whitelist = ip_range_whitelist if "|" in self.id: raise Exception("application service ID cannot contain '|' character") diff --git a/synapse/config/appservice.py b/synapse/config/appservice.py index 277305e184..0c27bb2fa7 100644 --- a/synapse/config/appservice.py +++ b/synapse/config/appservice.py @@ -17,6 +17,8 @@ from ._base import Config, ConfigError from synapse.appservice import ApplicationService from synapse.types import UserID +from netaddr import IPSet + import yaml import logging @@ -154,6 +156,13 @@ def _load_appservice(hostname, as_info, config_filename): " will not receive events or queries.", config_filename, ) + + ip_range_whitelist = None + if as_info.get('ip_range_whitelist'): + ip_range_whitelist = IPSet( + as_info.get('ip_range_whitelist') + ) + return ApplicationService( token=as_info["as_token"], hostname=hostname, @@ -163,5 +172,6 @@ def _load_appservice(hostname, as_info, config_filename): sender=user_id, id=as_info["id"], protocols=protocols, - rate_limited=rate_limited + rate_limited=rate_limited, + ip_range_whitelist=ip_range_whitelist, ) diff --git a/synapse/config/server.py b/synapse/config/server.py index 968ecd9ea0..71fd51e4bc 100644 --- a/synapse/config/server.py +++ b/synapse/config/server.py @@ -16,6 +16,7 @@ import logging +from synapse.http.endpoint import parse_and_validate_server_name from ._base import Config, ConfigError logger = logging.Logger(__name__) @@ -25,6 +26,12 @@ class ServerConfig(Config): def read_config(self, config): self.server_name = config["server_name"] + + try: + parse_and_validate_server_name(self.server_name) + except ValueError as e: + raise ConfigError(str(e)) + self.pid_file = self.abspath(config.get("pid_file")) self.web_client = config["web_client"] self.web_client_location = config.get("web_client_location", None) @@ -162,8 +169,8 @@ class ServerConfig(Config): }) def default_config(self, server_name, **kwargs): - if ":" in server_name: - bind_port = int(server_name.split(":")[1]) + _, bind_port = parse_and_validate_server_name(server_name) + if bind_port is not None: unsecure_port = bind_port - 400 else: bind_port = 8448 diff --git a/synapse/crypto/keyclient.py b/synapse/crypto/keyclient.py index 8e48f8a9cf..e13cab9dbf 100644 --- a/synapse/crypto/keyclient.py +++ b/synapse/crypto/keyclient.py @@ -18,7 +18,7 @@ from twisted.web.http import HTTPClient from twisted.internet.protocol import Factory from twisted.internet import defer, reactor from synapse.http.endpoint import matrix_federation_endpoint -import simplejson as json +from canonicaljson import json import logging diff --git a/synapse/event_auth.py b/synapse/event_auth.py index f512d88145..cdf99fd140 100644 --- a/synapse/event_auth.py +++ b/synapse/event_auth.py @@ -76,6 +76,7 @@ def check(event, auth_events, do_sig_check=True, do_size_check=True): return if event.type == EventTypes.Create: + sender_domain = get_domain_from_id(event.sender) room_id_domain = get_domain_from_id(event.room_id) if room_id_domain != sender_domain: raise AuthError( @@ -524,7 +525,11 @@ def _check_power_levels(event, auth_events): "to your own" ) - if old_level > user_level or new_level > user_level: + # Check if the old and new levels are greater than the user level + # (if defined) + old_level_too_big = old_level is not None and old_level > user_level + new_level_too_big = new_level is not None and new_level > user_level + if old_level_too_big or new_level_too_big: raise AuthError( 403, "You don't have permission to add ops level greater " diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py index d4dd967c60..591d0026bf 100644 --- a/synapse/federation/federation_server.py +++ b/synapse/federation/federation_server.py @@ -14,10 +14,14 @@ # See the License for the specific language governing permissions and # limitations under the License. import logging +import re -import simplejson as json +from canonicaljson import json +import six from twisted.internet import defer +from twisted.internet.abstract import isIPAddress +from synapse.api.constants import EventTypes from synapse.api.errors import AuthError, FederationError, SynapseError, NotFoundError from synapse.crypto.event_signing import compute_event_signature from synapse.federation.federation_base import ( @@ -27,6 +31,7 @@ from synapse.federation.federation_base import ( from synapse.federation.persistence import TransactionActions from synapse.federation.units import Edu, Transaction +from synapse.http.endpoint import parse_server_name from synapse.types import get_domain_from_id from synapse.util import async from synapse.util.caches.response_cache import ResponseCache @@ -74,6 +79,9 @@ class FederationServer(FederationBase): @log_function def on_backfill_request(self, origin, room_id, versions, limit): with (yield self._server_linearizer.queue((origin, room_id))): + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, room_id) + pdus = yield self.handler.on_backfill_request( origin, room_id, versions, limit ) @@ -134,6 +142,8 @@ class FederationServer(FederationBase): received_pdus_counter.inc(len(transaction.pdus)) + origin_host, _ = parse_server_name(transaction.origin) + pdus_by_room = {} for p in transaction.pdus: @@ -154,9 +164,21 @@ class FederationServer(FederationBase): # we can process different rooms in parallel (which is useful if they # require callouts to other servers to fetch missing events), but # impose a limit to avoid going too crazy with ram/cpu. + @defer.inlineCallbacks def process_pdus_for_room(room_id): logger.debug("Processing PDUs for %s", room_id) + try: + yield self.check_server_matches_acl(origin_host, room_id) + except AuthError as e: + logger.warn( + "Ignoring PDUs for room %s from banned server", room_id, + ) + for pdu in pdus_by_room[room_id]: + event_id = pdu.event_id + pdu_results[event_id] = e.error_dict() + return + for pdu in pdus_by_room[room_id]: event_id = pdu.event_id try: @@ -211,6 +233,9 @@ class FederationServer(FederationBase): if not event_id: raise NotImplementedError("Specify an event") + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, room_id) + in_room = yield self.auth.check_host_in_room(room_id, origin) if not in_room: raise AuthError(403, "Host not in room.") @@ -234,6 +259,9 @@ class FederationServer(FederationBase): if not event_id: raise NotImplementedError("Specify an event") + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, room_id) + in_room = yield self.auth.check_host_in_room(room_id, origin) if not in_room: raise AuthError(403, "Host not in room.") @@ -298,7 +326,9 @@ class FederationServer(FederationBase): defer.returnValue((200, resp)) @defer.inlineCallbacks - def on_make_join_request(self, room_id, user_id): + def on_make_join_request(self, origin, room_id, user_id): + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, room_id) pdu = yield self.handler.on_make_join_request(room_id, user_id) time_now = self._clock.time_msec() defer.returnValue({"event": pdu.get_pdu_json(time_now)}) @@ -306,6 +336,8 @@ class FederationServer(FederationBase): @defer.inlineCallbacks def on_invite_request(self, origin, content): pdu = event_from_pdu_json(content) + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, pdu.room_id) ret_pdu = yield self.handler.on_invite_request(origin, pdu) time_now = self._clock.time_msec() defer.returnValue((200, {"event": ret_pdu.get_pdu_json(time_now)})) @@ -314,6 +346,10 @@ class FederationServer(FederationBase): def on_send_join_request(self, origin, content): logger.debug("on_send_join_request: content: %s", content) pdu = event_from_pdu_json(content) + + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, pdu.room_id) + logger.debug("on_send_join_request: pdu sigs: %s", pdu.signatures) res_pdus = yield self.handler.on_send_join_request(origin, pdu) time_now = self._clock.time_msec() @@ -325,7 +361,9 @@ class FederationServer(FederationBase): })) @defer.inlineCallbacks - def on_make_leave_request(self, room_id, user_id): + def on_make_leave_request(self, origin, room_id, user_id): + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, room_id) pdu = yield self.handler.on_make_leave_request(room_id, user_id) time_now = self._clock.time_msec() defer.returnValue({"event": pdu.get_pdu_json(time_now)}) @@ -334,6 +372,10 @@ class FederationServer(FederationBase): def on_send_leave_request(self, origin, content): logger.debug("on_send_leave_request: content: %s", content) pdu = event_from_pdu_json(content) + + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, pdu.room_id) + logger.debug("on_send_leave_request: pdu sigs: %s", pdu.signatures) yield self.handler.on_send_leave_request(origin, pdu) defer.returnValue((200, {})) @@ -341,6 +383,9 @@ class FederationServer(FederationBase): @defer.inlineCallbacks def on_event_auth(self, origin, room_id, event_id): with (yield self._server_linearizer.queue((origin, room_id))): + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, room_id) + time_now = self._clock.time_msec() auth_pdus = yield self.handler.on_event_auth(event_id) res = { @@ -369,6 +414,9 @@ class FederationServer(FederationBase): Deferred: Results in `dict` with the same format as `content` """ with (yield self._server_linearizer.queue((origin, room_id))): + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, room_id) + auth_chain = [ event_from_pdu_json(e) for e in content["auth_chain"] @@ -442,6 +490,9 @@ class FederationServer(FederationBase): def on_get_missing_events(self, origin, room_id, earliest_events, latest_events, limit, min_depth): with (yield self._server_linearizer.queue((origin, room_id))): + origin_host, _ = parse_server_name(origin) + yield self.check_server_matches_acl(origin_host, room_id) + logger.info( "on_get_missing_events: earliest_events: %r, latest_events: %r," " limit: %d, min_depth: %d", @@ -549,7 +600,9 @@ class FederationServer(FederationBase): affected=pdu.event_id, ) - yield self.handler.on_receive_pdu(origin, pdu, get_missing=True) + yield self.handler.on_receive_pdu( + origin, pdu, get_missing=True, sent_to_us_directly=True, + ) def __str__(self): return "<ReplicationLayer(%s)>" % self.server_name @@ -577,6 +630,101 @@ class FederationServer(FederationBase): ) defer.returnValue(ret) + @defer.inlineCallbacks + def check_server_matches_acl(self, server_name, room_id): + """Check if the given server is allowed by the server ACLs in the room + + Args: + server_name (str): name of server, *without any port part* + room_id (str): ID of the room to check + + Raises: + AuthError if the server does not match the ACL + """ + state_ids = yield self.store.get_current_state_ids(room_id) + acl_event_id = state_ids.get((EventTypes.ServerACL, "")) + + if not acl_event_id: + return + + acl_event = yield self.store.get_event(acl_event_id) + if server_matches_acl_event(server_name, acl_event): + return + + raise AuthError(code=403, msg="Server is banned from room") + + +def server_matches_acl_event(server_name, acl_event): + """Check if the given server is allowed by the ACL event + + Args: + server_name (str): name of server, without any port part + acl_event (EventBase): m.room.server_acl event + + Returns: + bool: True if this server is allowed by the ACLs + """ + logger.debug("Checking %s against acl %s", server_name, acl_event.content) + + # first of all, check if literal IPs are blocked, and if so, whether the + # server name is a literal IP + allow_ip_literals = acl_event.content.get("allow_ip_literals", True) + if not isinstance(allow_ip_literals, bool): + logger.warn("Ignorning non-bool allow_ip_literals flag") + allow_ip_literals = True + if not allow_ip_literals: + # check for ipv6 literals. These start with '['. + if server_name[0] == '[': + return False + + # check for ipv4 literals. We can just lift the routine from twisted. + if isIPAddress(server_name): + return False + + # next, check the deny list + deny = acl_event.content.get("deny", []) + if not isinstance(deny, (list, tuple)): + logger.warn("Ignorning non-list deny ACL %s", deny) + deny = [] + for e in deny: + if _acl_entry_matches(server_name, e): + # logger.info("%s matched deny rule %s", server_name, e) + return False + + # then the allow list. + allow = acl_event.content.get("allow", []) + if not isinstance(allow, (list, tuple)): + logger.warn("Ignorning non-list allow ACL %s", allow) + allow = [] + for e in allow: + if _acl_entry_matches(server_name, e): + # logger.info("%s matched allow rule %s", server_name, e) + return True + + # everything else should be rejected. + # logger.info("%s fell through", server_name) + return False + + +def _acl_entry_matches(server_name, acl_entry): + if not isinstance(acl_entry, six.string_types): + logger.warn("Ignoring non-str ACL entry '%s' (is %s)", acl_entry, type(acl_entry)) + return False + regex = _glob_to_regex(acl_entry) + return regex.match(server_name) + + +def _glob_to_regex(glob): + res = '' + for c in glob: + if c == '*': + res = res + '.*' + elif c == '?': + res = res + '.' + else: + res = res + re.escape(c) + return re.compile(res + "\\Z", re.IGNORECASE) + class FederationHandlerRegistry(object): """Allows classes to register themselves as handlers for a given EDU or diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py index 19d09f5422..c6d98d35cb 100644 --- a/synapse/federation/transport/server.py +++ b/synapse/federation/transport/server.py @@ -18,6 +18,7 @@ from twisted.internet import defer from synapse.api.urls import FEDERATION_PREFIX as PREFIX from synapse.api.errors import Codes, SynapseError, FederationDeniedError +from synapse.http.endpoint import parse_and_validate_server_name from synapse.http.server import JsonResource from synapse.http.servlet import ( parse_json_object_from_request, parse_integer_from_args, parse_string_from_args, @@ -99,26 +100,6 @@ class Authenticator(object): origin = None - def parse_auth_header(header_str): - try: - params = auth.split(" ")[1].split(",") - param_dict = dict(kv.split("=") for kv in params) - - def strip_quotes(value): - if value.startswith("\""): - return value[1:-1] - else: - return value - - origin = strip_quotes(param_dict["origin"]) - key = strip_quotes(param_dict["key"]) - sig = strip_quotes(param_dict["sig"]) - return (origin, key, sig) - except Exception: - raise AuthenticationError( - 400, "Malformed Authorization header", Codes.UNAUTHORIZED - ) - auth_headers = request.requestHeaders.getRawHeaders(b"Authorization") if not auth_headers: @@ -127,8 +108,8 @@ class Authenticator(object): ) for auth in auth_headers: - if auth.startswith("X-Matrix"): - (origin, key, sig) = parse_auth_header(auth) + if auth.startswith(b"X-Matrix"): + (origin, key, sig) = _parse_auth_header(auth) json_request["origin"] = origin json_request["signatures"].setdefault(origin, {})[key] = sig @@ -165,6 +146,48 @@ class Authenticator(object): logger.exception("Error resetting retry timings on %s", origin) +def _parse_auth_header(header_bytes): + """Parse an X-Matrix auth header + + Args: + header_bytes (bytes): header value + + Returns: + Tuple[str, str, str]: origin, key id, signature. + + Raises: + AuthenticationError if the header could not be parsed + """ + try: + header_str = header_bytes.decode('utf-8') + params = header_str.split(" ")[1].split(",") + param_dict = dict(kv.split("=") for kv in params) + + def strip_quotes(value): + if value.startswith(b"\""): + return value[1:-1] + else: + return value + + origin = strip_quotes(param_dict["origin"]) + + # ensure that the origin is a valid server name + parse_and_validate_server_name(origin) + + key = strip_quotes(param_dict["key"]) + sig = strip_quotes(param_dict["sig"]) + return origin, key, sig + except Exception as e: + logger.warn( + "Error parsing auth header '%s': %s", + header_bytes.decode('ascii', 'replace'), + e, + ) + raise AuthenticationError( + 400, "Malformed Authorization header", Codes.UNAUTHORIZED, + ) + + class BaseFederationServlet(object): REQUIRE_AUTH = True @@ -362,7 +385,9 @@ class FederationMakeJoinServlet(BaseFederationServlet): @defer.inlineCallbacks def on_GET(self, origin, content, query, context, user_id): - content = yield self.handler.on_make_join_request(context, user_id) + content = yield self.handler.on_make_join_request( + origin, context, user_id, + ) defer.returnValue((200, content)) @@ -371,7 +396,9 @@ class FederationMakeLeaveServlet(BaseFederationServlet): @defer.inlineCallbacks def on_GET(self, origin, content, query, context, user_id): - content = yield self.handler.on_make_leave_request(context, user_id) + content = yield self.handler.on_make_leave_request( + origin, context, user_id, + ) defer.returnValue((200, content)) diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py index a131b7f73f..cbef1f2770 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -16,6 +16,8 @@ from twisted.internet import defer, threads +from canonicaljson import json + from ._base import BaseHandler from synapse.api.constants import LoginType from synapse.api.errors import ( @@ -32,7 +34,6 @@ from twisted.web.client import PartialDownloadError import logging import bcrypt import pymacaroons -import simplejson import attr import synapse.util.stringutils as stringutils @@ -403,7 +404,7 @@ class AuthHandler(BaseHandler): except PartialDownloadError as pde: # Twisted is silly data = pde.response - resp_body = simplejson.loads(data) + resp_body = json.loads(data) if 'success' in resp_body: # Note that we do NOT check the hostname here: we explicitly diff --git a/synapse/handlers/deactivate_account.py b/synapse/handlers/deactivate_account.py index 8ec5ba2012..a84b7b8b80 100644 --- a/synapse/handlers/deactivate_account.py +++ b/synapse/handlers/deactivate_account.py @@ -12,7 +12,7 @@ # 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 twisted.internet import defer, reactor +from twisted.internet import defer from ._base import BaseHandler from synapse.types import UserID, create_requester @@ -39,14 +39,15 @@ class DeactivateAccountHandler(BaseHandler): # Start the user parter loop so it can resume parting users from rooms where # it left off (if it has work left to do). - reactor.callWhenRunning(self._start_user_parting) + hs.get_reactor().callWhenRunning(self._start_user_parting) @defer.inlineCallbacks - def deactivate_account(self, user_id): + def deactivate_account(self, user_id, erase_data): """Deactivate a user's account Args: user_id (str): ID of user to be deactivated + erase_data (bool): whether to GDPR-erase the user's data Returns: Deferred @@ -92,6 +93,11 @@ class DeactivateAccountHandler(BaseHandler): # delete from user directory yield self.user_directory_handler.handle_user_deactivated(user_id) + # Mark the user as erased, if they asked for that + if erase_data: + logger.info("Marking %s as erased", user_id) + yield self.store.mark_user_erased(user_id) + # Now start the process that goes through that list and # parts users from rooms (if it isn't already running) self._start_user_parting() diff --git a/synapse/handlers/e2e_keys.py b/synapse/handlers/e2e_keys.py index 8a2d177539..62b4892a4e 100644 --- a/synapse/handlers/e2e_keys.py +++ b/synapse/handlers/e2e_keys.py @@ -14,10 +14,9 @@ # See the License for the specific language governing permissions and # limitations under the License. -import simplejson as json import logging -from canonicaljson import encode_canonical_json +from canonicaljson import encode_canonical_json, json from twisted.internet import defer from six import iteritems @@ -80,7 +79,7 @@ class E2eKeysHandler(object): else: remote_queries[user_id] = device_ids - # Firt get local devices. + # First get local devices. failures = {} results = {} if local_query: @@ -357,7 +356,7 @@ def _exception_to_failure(e): # include ConnectionRefused and other errors # # Note that some Exceptions (notably twisted's ResponseFailed etc) don't - # give a string for e.message, which simplejson then fails to serialize. + # give a string for e.message, which json then fails to serialize. return { "status": 503, "message": str(e.message), } diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index 2571758284..13117d70fe 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -44,6 +44,7 @@ from synapse.util.frozenutils import unfreeze from synapse.crypto.event_signing import ( compute_event_signature, add_hashes_and_signatures, ) +from synapse.state import resolve_events_with_factory from synapse.types import UserID, get_domain_from_id from synapse.events.utils import prune_event @@ -89,7 +90,9 @@ class FederationHandler(BaseHandler): @defer.inlineCallbacks @log_function - def on_receive_pdu(self, origin, pdu, get_missing=True): + def on_receive_pdu( + self, origin, pdu, get_missing=True, sent_to_us_directly=False, + ): """ Process a PDU received via a federation /send/ transaction, or via backfill of missing prev_events @@ -163,14 +166,11 @@ class FederationHandler(BaseHandler): "Ignoring PDU %s for room %s from %s as we've left the room!", pdu.event_id, pdu.room_id, origin, ) - return + defer.returnValue(None) state = None - auth_chain = [] - fetch_state = False - # Get missing pdus if necessary. if not pdu.internal_metadata.is_outlier(): # We only backfill backwards to the min depth. @@ -225,26 +225,60 @@ class FederationHandler(BaseHandler): list(prevs - seen)[:5], ) - if prevs - seen: - logger.info( - "Still missing %d events for room %r: %r...", - len(prevs - seen), pdu.room_id, list(prevs - seen)[:5] + if sent_to_us_directly and prevs - seen: + # If they have sent it to us directly, and the server + # isn't telling us about the auth events that it's + # made a message referencing, we explode + raise FederationError( + "ERROR", + 403, + ( + "Your server isn't divulging details about prev_events " + "referenced in this event." + ), + affected=pdu.event_id, ) - fetch_state = True + elif prevs - seen: + # Calculate the state of the previous events, and + # de-conflict them to find the current state. + state_groups = [] + auth_chains = set() + try: + # Get the state of the events we know about + ours = yield self.store.get_state_groups(pdu.room_id, list(seen)) + state_groups.append(ours) + + # Ask the remote server for the states we don't + # know about + for p in prevs - seen: + state, got_auth_chain = ( + yield self.replication_layer.get_state_for_room( + origin, pdu.room_id, p + ) + ) + auth_chains.update(got_auth_chain) + state_group = {(x.type, x.state_key): x.event_id for x in state} + state_groups.append(state_group) + + # Resolve any conflicting state + def fetch(ev_ids): + return self.store.get_events( + ev_ids, get_prev_content=False, check_redacted=False + ) - if fetch_state: - # We need to get the state at this event, since we haven't - # processed all the prev events. - logger.debug( - "_handle_new_pdu getting state for %s", - pdu.room_id - ) - try: - state, auth_chain = yield self.replication_layer.get_state_for_room( - origin, pdu.room_id, pdu.event_id, - ) - except Exception: - logger.exception("Failed to get state for event: %s", pdu.event_id) + state_map = yield resolve_events_with_factory( + state_groups, {pdu.event_id: pdu}, fetch + ) + + state = (yield self.store.get_events(state_map.values())).values() + auth_chain = list(auth_chains) + except Exception: + raise FederationError( + "ERROR", + 403, + "We can't get valid state history.", + affected=pdu.event_id, + ) yield self._process_received_pdu( origin, @@ -322,11 +356,17 @@ class FederationHandler(BaseHandler): for e in missing_events: logger.info("Handling found event %s", e.event_id) - yield self.on_receive_pdu( - origin, - e, - get_missing=False - ) + try: + yield self.on_receive_pdu( + origin, + e, + get_missing=False + ) + except FederationError as e: + if e.code == 403: + logger.warn("Event %s failed history check.") + else: + raise @log_function @defer.inlineCallbacks @@ -460,6 +500,47 @@ class FederationHandler(BaseHandler): @measure_func("_filter_events_for_server") @defer.inlineCallbacks def _filter_events_for_server(self, server_name, room_id, events): + """Filter the given events for the given server, redacting those the + server can't see. + + Assumes the server is currently in the room. + + Returns + list[FrozenEvent] + """ + # First lets check to see if all the events have a history visibility + # of "shared" or "world_readable". If thats the case then we don't + # need to check membership (as we know the server is in the room). + event_to_state_ids = yield self.store.get_state_ids_for_events( + frozenset(e.event_id for e in events), + types=( + (EventTypes.RoomHistoryVisibility, ""), + ) + ) + + visibility_ids = set() + for sids in event_to_state_ids.itervalues(): + hist = sids.get((EventTypes.RoomHistoryVisibility, "")) + if hist: + visibility_ids.add(hist) + + # If we failed to find any history visibility events then the default + # is "shared" visiblity. + if not visibility_ids: + defer.returnValue(events) + + event_map = yield self.store.get_events(visibility_ids) + all_open = all( + e.content.get("history_visibility") in (None, "shared", "world_readable") + for e in event_map.itervalues() + ) + + if all_open: + defer.returnValue(events) + + # Ok, so we're dealing with events that have non-trivial visibility + # rules, so we need to also get the memberships of the room. + event_to_state_ids = yield self.store.get_state_ids_for_events( frozenset(e.event_id for e in events), types=( @@ -495,7 +576,20 @@ class FederationHandler(BaseHandler): for e_id, key_to_eid in event_to_state_ids.iteritems() } + erased_senders = yield self.store.are_users_erased( + e.sender for e in events, + ) + def redact_disallowed(event, state): + # if the sender has been gdpr17ed, always return a redacted + # copy of the event. + if erased_senders[event.sender]: + logger.info( + "Sender of %s has been erased, redacting", + event.event_id, + ) + return prune_event(event) + if not state: return event diff --git a/synapse/handlers/identity.py b/synapse/handlers/identity.py index f00dfe1d3e..277c2b7760 100644 --- a/synapse/handlers/identity.py +++ b/synapse/handlers/identity.py @@ -19,7 +19,7 @@ import logging -import simplejson as json +from canonicaljson import json from twisted.internet import defer diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 7b9946ab91..cbadf3c88e 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -14,13 +14,12 @@ # See the License for the specific language governing permissions and # limitations under the License. import logging -import simplejson import sys -from canonicaljson import encode_canonical_json +from canonicaljson import encode_canonical_json, json import six from six import string_types, itervalues, iteritems -from twisted.internet import defer, reactor +from twisted.internet import defer from twisted.internet.defer import succeed from twisted.python.failure import Failure @@ -157,7 +156,7 @@ class MessageHandler(BaseHandler): # remove the purge from the list 24 hours after it completes def clear_purge(): del self._purges_by_id[purge_id] - reactor.callLater(24 * 3600, clear_purge) + self.hs.get_reactor().callLater(24 * 3600, clear_purge) def get_purge_status(self, purge_id): """Get the current status of an active purge @@ -491,7 +490,7 @@ class EventCreationHandler(object): target, e ) - is_exempt = yield self._is_exempt_from_privacy_policy(builder) + is_exempt = yield self._is_exempt_from_privacy_policy(builder, requester) if not is_exempt: yield self.assert_accepted_privacy_policy(requester) @@ -509,12 +508,13 @@ class EventCreationHandler(object): defer.returnValue((event, context)) - def _is_exempt_from_privacy_policy(self, builder): + def _is_exempt_from_privacy_policy(self, builder, requester): """"Determine if an event to be sent is exempt from having to consent to the privacy policy Args: builder (synapse.events.builder.EventBuilder): event being created + requester (Requster): user requesting this event Returns: Deferred[bool]: true if the event can be sent without the user @@ -525,6 +525,9 @@ class EventCreationHandler(object): membership = builder.content.get("membership", None) if membership == Membership.JOIN: return self._is_server_notices_room(builder.room_id) + elif membership == Membership.LEAVE: + # the user is always allowed to leave (but not kick people) + return builder.state_key == requester.user.to_string() return succeed(False) @defer.inlineCallbacks @@ -793,7 +796,7 @@ class EventCreationHandler(object): # Ensure that we can round trip before trying to persist in db try: dump = frozendict_json_encoder.encode(event.content) - simplejson.loads(dump) + json.loads(dump) except Exception: logger.exception("Failed to encode content: %r", event.content) raise diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py index 7fe568132f..7db59fba00 100644 --- a/synapse/handlers/presence.py +++ b/synapse/handlers/presence.py @@ -22,7 +22,7 @@ The methods that define policy are: - should_notify """ -from twisted.internet import defer, reactor +from twisted.internet import defer from contextlib import contextmanager from six import itervalues, iteritems @@ -179,7 +179,7 @@ class PresenceHandler(object): # have not yet been persisted self.unpersisted_users_changes = set() - reactor.addSystemEventTrigger("before", "shutdown", self._on_shutdown) + hs.get_reactor().addSystemEventTrigger("before", "shutdown", self._on_shutdown) self.serial_to_user = {} self._next_serial = 1 diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index 51ec727df0..7f486e48e5 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -145,7 +145,7 @@ class SyncResult(collections.namedtuple("SyncResult", [ "invited", # InvitedSyncResult for each invited room. "archived", # ArchivedSyncResult for each archived room. "to_device", # List of direct messages for the device. - "device_lists", # List of user_ids whose devices have chanegd + "device_lists", # List of user_ids whose devices have changed "device_one_time_keys_count", # Dict of algorithm to count for one time keys # for this device "groups", diff --git a/synapse/http/client.py b/synapse/http/client.py index 46ffb41de1..5bdc484c15 100644 --- a/synapse/http/client.py +++ b/synapse/http/client.py @@ -42,7 +42,7 @@ from twisted.web._newclient import ResponseDone from six import StringIO from prometheus_client import Counter -import simplejson as json +from canonicaljson import json import logging import urllib diff --git a/synapse/http/endpoint.py b/synapse/http/endpoint.py index 39432da452..6056df6226 100644 --- a/synapse/http/endpoint.py +++ b/synapse/http/endpoint.py @@ -12,8 +12,10 @@ # 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. +import re + from twisted.internet.endpoints import HostnameEndpoint, wrapClientTLS -from twisted.internet import defer, reactor +from twisted.internet import defer from twisted.internet.error import ConnectError from twisted.names import client, dns from twisted.names.error import DNSNameError, DomainError @@ -37,6 +39,71 @@ _Server = collections.namedtuple( ) +def parse_server_name(server_name): + """Split a server name into host/port parts. + + Args: + server_name (str): server name to parse + + Returns: + Tuple[str, int|None]: host/port parts. + + Raises: + ValueError if the server name could not be parsed. + """ + try: + if server_name[-1] == ']': + # ipv6 literal, hopefully + return server_name, None + + domain_port = server_name.rsplit(":", 1) + domain = domain_port[0] + port = int(domain_port[1]) if domain_port[1:] else None + return domain, port + except Exception: + raise ValueError("Invalid server name '%s'" % server_name) + + +VALID_HOST_REGEX = re.compile( + "\\A[0-9a-zA-Z.-]+\\Z", +) + + +def parse_and_validate_server_name(server_name): + """Split a server name into host/port parts and do some basic validation. + + Args: + server_name (str): server name to parse + + Returns: + Tuple[str, int|None]: host/port parts. + + Raises: + ValueError if the server name could not be parsed. + """ + host, port = parse_server_name(server_name) + + # these tests don't need to be bulletproof as we'll find out soon enough + # if somebody is giving us invalid data. What we *do* need is to be sure + # that nobody is sneaking IP literals in that look like hostnames, etc. + + # look for ipv6 literals + if host[0] == '[': + if host[-1] != ']': + raise ValueError("Mismatched [...] in server name '%s'" % ( + server_name, + )) + return host, port + + # otherwise it should only be alphanumerics. + if not VALID_HOST_REGEX.match(host): + raise ValueError("Server name '%s' contains invalid characters" % ( + server_name, + )) + + return host, port + + def matrix_federation_endpoint(reactor, destination, tls_client_options_factory=None, timeout=None): """Construct an endpoint for the given matrix destination. @@ -50,9 +117,7 @@ def matrix_federation_endpoint(reactor, destination, tls_client_options_factory= timeout (int): connection timeout in seconds """ - domain_port = destination.split(":") - domain = domain_port[0] - port = int(domain_port[1]) if domain_port[1:] else None + domain, port = parse_server_name(destination) endpoint_kw_args = {} @@ -74,21 +139,22 @@ def matrix_federation_endpoint(reactor, destination, tls_client_options_factory= reactor, "matrix", domain, protocol="tcp", default_port=default_port, endpoint=transport_endpoint, endpoint_kw_args=endpoint_kw_args - )) + ), reactor) else: return _WrappingEndpointFac(transport_endpoint( reactor, domain, port, **endpoint_kw_args - )) + ), reactor) class _WrappingEndpointFac(object): - def __init__(self, endpoint_fac): + def __init__(self, endpoint_fac, reactor): self.endpoint_fac = endpoint_fac + self.reactor = reactor @defer.inlineCallbacks def connect(self, protocolFactory): conn = yield self.endpoint_fac.connect(protocolFactory) - conn = _WrappedConnection(conn) + conn = _WrappedConnection(conn, self.reactor) defer.returnValue(conn) @@ -98,9 +164,10 @@ class _WrappedConnection(object): """ __slots__ = ["conn", "last_request"] - def __init__(self, conn): + def __init__(self, conn, reactor): object.__setattr__(self, "conn", conn) object.__setattr__(self, "last_request", time.time()) + self._reactor = reactor def __getattr__(self, name): return getattr(self.conn, name) @@ -131,14 +198,14 @@ class _WrappedConnection(object): # Time this connection out if we haven't send a request in the last # N minutes # TODO: Cancel the previous callLater? - reactor.callLater(3 * 60, self._time_things_out_maybe) + self._reactor.callLater(3 * 60, self._time_things_out_maybe) d = self.conn.request(request) def update_request_time(res): self.last_request = time.time() # TODO: Cancel the previous callLater? - reactor.callLater(3 * 60, self._time_things_out_maybe) + self._reactor.callLater(3 * 60, self._time_things_out_maybe) return res d.addCallback(update_request_time) diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py index b48d05fcd2..6a398c9645 100644 --- a/synapse/http/matrixfederationclient.py +++ b/synapse/http/matrixfederationclient.py @@ -27,7 +27,7 @@ from synapse.util import logcontext from synapse.util.logcontext import make_deferred_yieldable import synapse.util.retryutils -from canonicaljson import encode_canonical_json +from canonicaljson import encode_canonical_json, json from synapse.api.errors import ( SynapseError, Codes, HttpResponseException, FederationDeniedError, @@ -36,7 +36,6 @@ from synapse.api.errors import ( from signedjson.sign import sign_json import cgi -import simplejson as json import logging import random import sys diff --git a/synapse/http/server.py b/synapse/http/server.py index bc09b8b2be..517aaf7b5a 100644 --- a/synapse/http/server.py +++ b/synapse/http/server.py @@ -29,7 +29,7 @@ import synapse.metrics import synapse.events from canonicaljson import ( - encode_canonical_json, encode_pretty_printed_json + encode_canonical_json, encode_pretty_printed_json, json ) from twisted.internet import defer @@ -41,7 +41,6 @@ from twisted.web.util import redirectTo import collections import logging import urllib -import simplejson logger = logging.getLogger(__name__) @@ -410,7 +409,7 @@ def respond_with_json(request, code, json_object, send_cors=False, if canonical_json or synapse.events.USE_FROZEN_DICTS: json_bytes = encode_canonical_json(json_object) else: - json_bytes = simplejson.dumps(json_object) + json_bytes = json.dumps(json_object) return respond_with_json_bytes( request, code, json_bytes, diff --git a/synapse/http/servlet.py b/synapse/http/servlet.py index ef8e62901b..ef3a01ddc7 100644 --- a/synapse/http/servlet.py +++ b/synapse/http/servlet.py @@ -18,7 +18,9 @@ from synapse.api.errors import SynapseError, Codes import logging -import simplejson + +from canonicaljson import json + logger = logging.getLogger(__name__) @@ -171,7 +173,7 @@ def parse_json_value_from_request(request, allow_empty_body=False): return None try: - content = simplejson.loads(content_bytes) + content = json.loads(content_bytes) except Exception as e: logger.warn("Unable to parse JSON: %s", e) raise SynapseError(400, "Content not JSON.", errcode=Codes.NOT_JSON) diff --git a/synapse/http/site.py b/synapse/http/site.py index 74a752d6cf..fe93643b1e 100644 --- a/synapse/http/site.py +++ b/synapse/http/site.py @@ -107,13 +107,28 @@ class SynapseRequest(Request): end_time = time.time() + # need to decode as it could be raw utf-8 bytes + # from a IDN servname in an auth header + authenticated_entity = self.authenticated_entity + if authenticated_entity is not None: + authenticated_entity = authenticated_entity.decode("utf-8", "replace") + + # ...or could be raw utf-8 bytes in the User-Agent header. + # N.B. if you don't do this, the logger explodes cryptically + # with maximum recursion trying to log errors about + # the charset problem. + # c.f. https://github.com/matrix-org/synapse/issues/3471 + user_agent = self.get_user_agent() + if user_agent is not None: + user_agent = user_agent.decode("utf-8", "replace") + self.site.access_logger.info( "%s - %s - {%s}" " Processed request: %.3fsec (%.3fsec, %.3fsec) (%.3fsec/%.3fsec/%d)" " %sB %s \"%s %s %s\" \"%s\" [%d dbevts]", self.getClientIP(), self.site.site_tag, - self.authenticated_entity, + authenticated_entity, end_time - self.start_time, ru_utime, ru_stime, @@ -125,7 +140,7 @@ class SynapseRequest(Request): self.method, self.get_redacted_uri(), self.clientproto, - self.get_user_agent(), + user_agent, evt_db_fetch_count, ) diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py index 7d6e0232ed..2d2397caae 100644 --- a/synapse/metrics/__init__.py +++ b/synapse/metrics/__init__.py @@ -147,7 +147,8 @@ class GCCounts(object): yield cm -REGISTRY.register(GCCounts()) +if not running_on_pypy: + REGISTRY.register(GCCounts()) # # Twisted reactor metrics diff --git a/synapse/push/emailpusher.py b/synapse/push/emailpusher.py index ba7286cb72..52d4f087ee 100644 --- a/synapse/push/emailpusher.py +++ b/synapse/push/emailpusher.py @@ -13,7 +13,7 @@ # See the License for the specific language governing permissions and # limitations under the License. -from twisted.internet import defer, reactor +from twisted.internet import defer from twisted.internet.error import AlreadyCalled, AlreadyCancelled import logging @@ -199,7 +199,7 @@ class EmailPusher(object): self.timed_call = None if soonest_due_at is not None: - self.timed_call = reactor.callLater( + self.timed_call = self.hs.get_reactor().callLater( self.seconds_until(soonest_due_at), self.on_timer ) diff --git a/synapse/push/httppusher.py b/synapse/push/httppusher.py index bf7ff74a1a..7a481b5a1e 100644 --- a/synapse/push/httppusher.py +++ b/synapse/push/httppusher.py @@ -15,7 +15,7 @@ # limitations under the License. import logging -from twisted.internet import defer, reactor +from twisted.internet import defer from twisted.internet.error import AlreadyCalled, AlreadyCancelled from . import push_rule_evaluator @@ -220,7 +220,9 @@ class HttpPusher(object): ) else: logger.info("Push failed: delaying for %ds", self.backoff_delay) - self.timed_call = reactor.callLater(self.backoff_delay, self.on_timer) + self.timed_call = self.hs.get_reactor().callLater( + self.backoff_delay, self.on_timer + ) self.backoff_delay = min(self.backoff_delay * 2, self.MAX_BACKOFF_SEC) break diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py index faf6dfdb8d..987eec3ef2 100644 --- a/synapse/python_dependencies.py +++ b/synapse/python_dependencies.py @@ -57,16 +57,14 @@ REQUIREMENTS = { "phonenumbers>=8.2.0": ["phonenumbers"], "six": ["six"], "prometheus_client": ["prometheus_client"], - "attr": ["attr"], + "attrs": ["attr"], + "netaddr>=0.7.18": ["netaddr"], } CONDITIONAL_REQUIREMENTS = { "web_client": { "matrix_angular_sdk>=0.6.8": ["syweb>=0.6.8"], }, - "preview_url": { - "netaddr>=0.7.18": ["netaddr"], - }, "email.enable_notifs": { "Jinja2>=2.8": ["Jinja2>=2.8"], "bleach>=1.4.2": ["bleach>=1.4.2"], diff --git a/synapse/replication/slave/storage/events.py b/synapse/replication/slave/storage/events.py index b1f64ef0d8..97d3196633 100644 --- a/synapse/replication/slave/storage/events.py +++ b/synapse/replication/slave/storage/events.py @@ -23,6 +23,7 @@ from synapse.storage.roommember import RoomMemberWorkerStore from synapse.storage.state import StateGroupWorkerStore from synapse.storage.stream import StreamWorkerStore from synapse.storage.signatures import SignatureWorkerStore +from synapse.storage.user_erasure_store import UserErasureWorkerStore from ._base import BaseSlavedStore from ._slaved_id_tracker import SlavedIdTracker @@ -45,6 +46,7 @@ class SlavedEventStore(EventFederationWorkerStore, EventsWorkerStore, StateGroupWorkerStore, SignatureWorkerStore, + UserErasureWorkerStore, BaseSlavedStore): def __init__(self, db_conn, hs): diff --git a/synapse/replication/tcp/client.py b/synapse/replication/tcp/client.py index 6d2513c4e2..bb852b00af 100644 --- a/synapse/replication/tcp/client.py +++ b/synapse/replication/tcp/client.py @@ -15,7 +15,7 @@ """A replication client for use by synapse workers. """ -from twisted.internet import reactor, defer +from twisted.internet import defer from twisted.internet.protocol import ReconnectingClientFactory from .commands import ( @@ -44,7 +44,7 @@ class ReplicationClientFactory(ReconnectingClientFactory): self.server_name = hs.config.server_name self._clock = hs.get_clock() # As self.clock is defined in super class - reactor.addSystemEventTrigger("before", "shutdown", self.stopTrying) + hs.get_reactor().addSystemEventTrigger("before", "shutdown", self.stopTrying) def startedConnecting(self, connector): logger.info("Connecting to replication: %r", connector.getDestination()) @@ -95,7 +95,7 @@ class ReplicationClientHandler(object): factory = ReplicationClientFactory(hs, client_name, self) host = hs.config.worker_replication_host port = hs.config.worker_replication_port - reactor.connectTCP(host, port, factory) + hs.get_reactor().connectTCP(host, port, factory) def on_rdata(self, stream_name, token, rows): """Called when we get new replication data. By default this just pokes diff --git a/synapse/replication/tcp/commands.py b/synapse/replication/tcp/commands.py index 12aac3cc6b..f3908df642 100644 --- a/synapse/replication/tcp/commands.py +++ b/synapse/replication/tcp/commands.py @@ -19,13 +19,17 @@ allowed to be sent by which side. """ import logging -import simplejson +import platform +if platform.python_implementation() == "PyPy": + import json + _json_encoder = json.JSONEncoder() +else: + import simplejson as json + _json_encoder = json.JSONEncoder(namedtuple_as_object=False) logger = logging.getLogger(__name__) -_json_encoder = simplejson.JSONEncoder(namedtuple_as_object=False) - class Command(object): """The base command class. @@ -102,7 +106,7 @@ class RdataCommand(Command): return cls( stream_name, None if token == "batch" else int(token), - simplejson.loads(row_json) + json.loads(row_json) ) def to_line(self): @@ -300,7 +304,7 @@ class InvalidateCacheCommand(Command): def from_line(cls, line): cache_func, keys_json = line.split(" ", 1) - return cls(cache_func, simplejson.loads(keys_json)) + return cls(cache_func, json.loads(keys_json)) def to_line(self): return " ".join(( @@ -329,7 +333,7 @@ class UserIpCommand(Command): def from_line(cls, line): user_id, jsn = line.split(" ", 1) - access_token, ip, user_agent, device_id, last_seen = simplejson.loads(jsn) + access_token, ip, user_agent, device_id, last_seen = json.loads(jsn) return cls( user_id, access_token, ip, user_agent, device_id, last_seen diff --git a/synapse/replication/tcp/resource.py b/synapse/replication/tcp/resource.py index 63bd6d2652..95ad8c1b4c 100644 --- a/synapse/replication/tcp/resource.py +++ b/synapse/replication/tcp/resource.py @@ -15,7 +15,7 @@ """The server side of the replication stream. """ -from twisted.internet import defer, reactor +from twisted.internet import defer from twisted.internet.protocol import Factory from .streams import STREAMS_MAP, FederationStream @@ -109,7 +109,7 @@ class ReplicationStreamer(object): self.is_looping = False self.pending_updates = False - reactor.addSystemEventTrigger("before", "shutdown", self.on_shutdown) + hs.get_reactor().addSystemEventTrigger("before", "shutdown", self.on_shutdown) def on_shutdown(self): # close all connections on shutdown diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/client/v1/admin.py index b8665a45eb..8fb08dc526 100644 --- a/synapse/rest/client/v1/admin.py +++ b/synapse/rest/client/v1/admin.py @@ -16,6 +16,8 @@ from twisted.internet import defer +from six.moves import http_client + from synapse.api.constants import Membership from synapse.api.errors import AuthError, SynapseError, Codes, NotFoundError from synapse.types import UserID, create_requester @@ -247,6 +249,15 @@ class DeactivateAccountRestServlet(ClientV1RestServlet): @defer.inlineCallbacks def on_POST(self, request, target_user_id): + body = parse_json_object_from_request(request, allow_empty_body=True) + erase = body.get("erase", False) + if not isinstance(erase, bool): + raise SynapseError( + http_client.BAD_REQUEST, + "Param 'erase' must be a boolean, if given", + Codes.BAD_JSON, + ) + UserID.from_string(target_user_id) requester = yield self.auth.get_user_by_req(request) is_admin = yield self.auth.is_server_admin(requester.user) @@ -254,7 +265,9 @@ class DeactivateAccountRestServlet(ClientV1RestServlet): if not is_admin: raise AuthError(403, "You are not a server admin") - yield self._deactivate_account_handler.deactivate_account(target_user_id) + yield self._deactivate_account_handler.deactivate_account( + target_user_id, erase, + ) defer.returnValue((200, {})) diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py index 34df5be4e9..88ca5184cd 100644 --- a/synapse/rest/client/v1/login.py +++ b/synapse/rest/client/v1/login.py @@ -23,7 +23,8 @@ from synapse.util.msisdn import phone_number_to_msisdn from .base import ClientV1RestServlet, client_path_patterns -import simplejson as json +from canonicaljson import json + import urllib from six.moves.urllib import parse as urlparse diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py index 0b984987ed..e6ae5db79b 100644 --- a/synapse/rest/client/v1/room.py +++ b/synapse/rest/client/v1/room.py @@ -31,7 +31,7 @@ from synapse.http.servlet import ( from six.moves.urllib import parse as urlparse import logging -import simplejson as json +from canonicaljson import json logger = logging.getLogger(__name__) diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py index e1281cfbb6..80dbc3c92e 100644 --- a/synapse/rest/client/v2_alpha/account.py +++ b/synapse/rest/client/v2_alpha/account.py @@ -1,6 +1,7 @@ # -*- coding: utf-8 -*- # Copyright 2015, 2016 OpenMarket Ltd # Copyright 2017 Vector Creations Ltd +# Copyright 2018 New Vector Ltd # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -15,6 +16,7 @@ # limitations under the License. import logging +from six.moves import http_client from twisted.internet import defer from synapse.api.auth import has_access_token @@ -186,13 +188,20 @@ class DeactivateAccountRestServlet(RestServlet): @defer.inlineCallbacks def on_POST(self, request): body = parse_json_object_from_request(request) + erase = body.get("erase", False) + if not isinstance(erase, bool): + raise SynapseError( + http_client.BAD_REQUEST, + "Param 'erase' must be a boolean, if given", + Codes.BAD_JSON, + ) requester = yield self.auth.get_user_by_req(request) # allow ASes to dectivate their own users if requester.app_service: yield self._deactivate_account_handler.deactivate_account( - requester.user.to_string() + requester.user.to_string(), erase, ) defer.returnValue((200, {})) @@ -200,7 +209,7 @@ class DeactivateAccountRestServlet(RestServlet): requester, body, self.hs.get_ip_from_request(request), ) yield self._deactivate_account_handler.deactivate_account( - requester.user.to_string(), + requester.user.to_string(), erase, ) defer.returnValue((200, {})) diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py index a291cffbf1..d2aa47b326 100644 --- a/synapse/rest/client/v2_alpha/sync.py +++ b/synapse/rest/client/v2_alpha/sync.py @@ -33,7 +33,7 @@ from ._base import set_timeline_upper_limit import itertools import logging -import simplejson as json +from canonicaljson import json logger = logging.getLogger(__name__) diff --git a/synapse/rest/media/v0/content_repository.py b/synapse/rest/media/v0/content_repository.py index 956bd5da75..e44d4276d2 100644 --- a/synapse/rest/media/v0/content_repository.py +++ b/synapse/rest/media/v0/content_repository.py @@ -22,8 +22,9 @@ from synapse.api.errors import ( from twisted.protocols.basic import FileSender from twisted.web import server, resource +from canonicaljson import json + import base64 -import simplejson as json import logging import os import re diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py index 565cef2b8d..adca490640 100644 --- a/synapse/rest/media/v1/preview_url_resource.py +++ b/synapse/rest/media/v1/preview_url_resource.py @@ -23,7 +23,8 @@ import re import shutil import sys import traceback -import simplejson as json + +from canonicaljson import json from six.moves import urllib_parse as urlparse from six import string_types diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py index 979fa22438..e843b702b9 100644 --- a/synapse/storage/__init__.py +++ b/synapse/storage/__init__.py @@ -20,6 +20,7 @@ import time import logging from synapse.storage.devices import DeviceStore +from synapse.storage.user_erasure_store import UserErasureStore from .appservice import ( ApplicationServiceStore, ApplicationServiceTransactionStore ) @@ -88,6 +89,7 @@ class DataStore(RoomMemberStore, RoomStore, DeviceInboxStore, UserDirectoryStore, GroupServerStore, + UserErasureStore, ): def __init__(self, db_conn, hs): diff --git a/synapse/storage/account_data.py b/synapse/storage/account_data.py index 284ec3c970..7034a61399 100644 --- a/synapse/storage/account_data.py +++ b/synapse/storage/account_data.py @@ -22,8 +22,9 @@ from synapse.storage.util.id_generators import StreamIdGenerator from synapse.util.caches.stream_change_cache import StreamChangeCache from synapse.util.caches.descriptors import cached, cachedInlineCallbacks +from canonicaljson import json + import abc -import simplejson as json import logging logger = logging.getLogger(__name__) diff --git a/synapse/storage/appservice.py b/synapse/storage/appservice.py index 12ea8a158c..4d32d0bdf6 100644 --- a/synapse/storage/appservice.py +++ b/synapse/storage/appservice.py @@ -15,8 +15,8 @@ # limitations under the License. import logging import re -import simplejson as json from twisted.internet import defer +from canonicaljson import json from synapse.appservice import AppServiceTransaction from synapse.config.appservice import load_appservices diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py index b7e9c716c8..af18964510 100644 --- a/synapse/storage/background_updates.py +++ b/synapse/storage/background_updates.py @@ -18,7 +18,8 @@ from . import engines from twisted.internet import defer -import simplejson as json +from canonicaljson import json + import logging logger = logging.getLogger(__name__) diff --git a/synapse/storage/deviceinbox.py b/synapse/storage/deviceinbox.py index a879e5bfc1..38addbf9c0 100644 --- a/synapse/storage/deviceinbox.py +++ b/synapse/storage/deviceinbox.py @@ -14,7 +14,8 @@ # limitations under the License. import logging -import simplejson + +from canonicaljson import json from twisted.internet import defer @@ -85,7 +86,7 @@ class DeviceInboxStore(BackgroundUpdateStore): ) rows = [] for destination, edu in remote_messages_by_destination.items(): - edu_json = simplejson.dumps(edu) + edu_json = json.dumps(edu) rows.append((destination, stream_id, now_ms, edu_json)) txn.executemany(sql, rows) @@ -177,7 +178,7 @@ class DeviceInboxStore(BackgroundUpdateStore): " WHERE user_id = ?" ) txn.execute(sql, (user_id,)) - message_json = simplejson.dumps(messages_by_device["*"]) + message_json = json.dumps(messages_by_device["*"]) for row in txn: # Add the message for all devices for this user on this # server. @@ -199,7 +200,7 @@ class DeviceInboxStore(BackgroundUpdateStore): # Only insert into the local inbox if the device exists on # this server device = row[0] - message_json = simplejson.dumps(messages_by_device[device]) + message_json = json.dumps(messages_by_device[device]) messages_json_for_user[device] = message_json if messages_json_for_user: @@ -253,7 +254,7 @@ class DeviceInboxStore(BackgroundUpdateStore): messages = [] for row in txn: stream_pos = row[0] - messages.append(simplejson.loads(row[1])) + messages.append(json.loads(row[1])) if len(messages) < limit: stream_pos = current_stream_id return (messages, stream_pos) @@ -389,7 +390,7 @@ class DeviceInboxStore(BackgroundUpdateStore): messages = [] for row in txn: stream_pos = row[0] - messages.append(simplejson.loads(row[1])) + messages.append(json.loads(row[1])) if len(messages) < limit: stream_pos = current_stream_id return (messages, stream_pos) diff --git a/synapse/storage/devices.py b/synapse/storage/devices.py index d149d8392e..2ed9ada783 100644 --- a/synapse/storage/devices.py +++ b/synapse/storage/devices.py @@ -13,7 +13,6 @@ # See the License for the specific language governing permissions and # limitations under the License. import logging -import simplejson as json from twisted.internet import defer @@ -21,6 +20,8 @@ from synapse.api.errors import StoreError from ._base import SQLBaseStore, Cache from synapse.util.caches.descriptors import cached, cachedList, cachedInlineCallbacks +from canonicaljson import json + from six import itervalues, iteritems logger = logging.getLogger(__name__) diff --git a/synapse/storage/end_to_end_keys.py b/synapse/storage/end_to_end_keys.py index b146487943..181047c8b7 100644 --- a/synapse/storage/end_to_end_keys.py +++ b/synapse/storage/end_to_end_keys.py @@ -16,8 +16,7 @@ from twisted.internet import defer from synapse.util.caches.descriptors import cached -from canonicaljson import encode_canonical_json -import simplejson as json +from canonicaljson import encode_canonical_json, json from ._base import SQLBaseStore diff --git a/synapse/storage/event_push_actions.py b/synapse/storage/event_push_actions.py index 8cb24b7d59..05cb3f61ce 100644 --- a/synapse/storage/event_push_actions.py +++ b/synapse/storage/event_push_actions.py @@ -19,7 +19,8 @@ from twisted.internet import defer from synapse.util.caches.descriptors import cachedInlineCallbacks import logging -import simplejson as json + +from canonicaljson import json from six import iteritems diff --git a/synapse/storage/events.py b/synapse/storage/events.py index 7d0e59538a..a54abb9edd 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -19,7 +19,8 @@ from functools import wraps import itertools import logging -import simplejson as json +from canonicaljson import json + from twisted.internet import defer from synapse.storage.events_worker import EventsWorkerStore @@ -800,7 +801,8 @@ class EventsStore(EventsWorkerStore): ] ) - self._curr_state_delta_stream_cache.entity_has_changed( + txn.call_after( + self._curr_state_delta_stream_cache.entity_has_changed, room_id, max_stream_order, ) diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py index f6a6e46b43..896225aab9 100644 --- a/synapse/storage/events_worker.py +++ b/synapse/storage/events_worker.py @@ -29,7 +29,8 @@ from synapse.api.errors import SynapseError from collections import namedtuple import logging -import simplejson as json + +from canonicaljson import json # these are only included to make the type annotations work from synapse.events import EventBase # noqa: F401 diff --git a/synapse/storage/filtering.py b/synapse/storage/filtering.py index 2e2763126d..eae6027cee 100644 --- a/synapse/storage/filtering.py +++ b/synapse/storage/filtering.py @@ -19,8 +19,7 @@ from ._base import SQLBaseStore from synapse.api.errors import SynapseError, Codes from synapse.util.caches.descriptors import cachedInlineCallbacks -from canonicaljson import encode_canonical_json -import simplejson as json +from canonicaljson import encode_canonical_json, json class FilteringStore(SQLBaseStore): diff --git a/synapse/storage/group_server.py b/synapse/storage/group_server.py index da05ccb027..b77402d295 100644 --- a/synapse/storage/group_server.py +++ b/synapse/storage/group_server.py @@ -20,7 +20,7 @@ from synapse.api.errors import SynapseError from ._base import SQLBaseStore -import simplejson as json +from canonicaljson import json # The category ID for the "default" category. We don't store as null in the diff --git a/synapse/storage/push_rule.py b/synapse/storage/push_rule.py index 04a0b59a39..9e52e992b3 100644 --- a/synapse/storage/push_rule.py +++ b/synapse/storage/push_rule.py @@ -25,9 +25,10 @@ from synapse.push.baserules import list_with_base_rules from synapse.api.constants import EventTypes from twisted.internet import defer +from canonicaljson import json + import abc import logging -import simplejson as json logger = logging.getLogger(__name__) diff --git a/synapse/storage/pusher.py b/synapse/storage/pusher.py index 307660b99a..c6def861cf 100644 --- a/synapse/storage/pusher.py +++ b/synapse/storage/pusher.py @@ -17,12 +17,11 @@ from ._base import SQLBaseStore from twisted.internet import defer -from canonicaljson import encode_canonical_json +from canonicaljson import encode_canonical_json, json from synapse.util.caches.descriptors import cachedInlineCallbacks, cachedList import logging -import simplejson as json import types logger = logging.getLogger(__name__) diff --git a/synapse/storage/receipts.py b/synapse/storage/receipts.py index c93c228f6e..f230a3bab7 100644 --- a/synapse/storage/receipts.py +++ b/synapse/storage/receipts.py @@ -21,9 +21,10 @@ from synapse.util.caches.stream_change_cache import StreamChangeCache from twisted.internet import defer +from canonicaljson import json + import abc import logging -import simplejson as json logger = logging.getLogger(__name__) diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py index 9c9cf46e7f..0d18f6d869 100644 --- a/synapse/storage/registration.py +++ b/synapse/storage/registration.py @@ -623,7 +623,9 @@ class RegistrationStore(RegistrationWorkerStore, Removes the given user to the table of users who need to be parted from all the rooms they're in, effectively marking that user as fully deactivated. """ - return self._simple_delete_one( + # XXX: This should be simple_delete_one but we failed to put a unique index on + # the table, so somehow duplicate entries have ended up in it. + return self._simple_delete( "users_pending_deactivation", keyvalues={ "user_id": user_id, diff --git a/synapse/storage/room.py b/synapse/storage/room.py index ea6a189185..ca0eb187e5 100644 --- a/synapse/storage/room.py +++ b/synapse/storage/room.py @@ -20,9 +20,10 @@ from synapse.storage._base import SQLBaseStore from synapse.storage.search import SearchStore from synapse.util.caches.descriptors import cached, cachedInlineCallbacks +from canonicaljson import json + import collections import logging -import simplejson as json import re logger = logging.getLogger(__name__) diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py index 829cc4a207..8fc9549a75 100644 --- a/synapse/storage/roommember.py +++ b/synapse/storage/roommember.py @@ -28,7 +28,7 @@ from synapse.api.constants import Membership, EventTypes from synapse.types import get_domain_from_id import logging -import simplejson as json +from canonicaljson import json from six import itervalues, iteritems diff --git a/synapse/storage/schema/delta/50/erasure_store.sql b/synapse/storage/schema/delta/50/erasure_store.sql new file mode 100644 index 0000000000..5d8641a9ab --- /dev/null +++ b/synapse/storage/schema/delta/50/erasure_store.sql @@ -0,0 +1,21 @@ +/* Copyright 2018 New Vector 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. + */ + +-- a table of users who have requested that their details be erased +CREATE TABLE erased_users ( + user_id TEXT NOT NULL +); + +CREATE UNIQUE INDEX erased_users_user ON erased_users(user_id); diff --git a/synapse/storage/search.py b/synapse/storage/search.py index f0fa5d7631..9b77c45318 100644 --- a/synapse/storage/search.py +++ b/synapse/storage/search.py @@ -16,7 +16,7 @@ from collections import namedtuple import logging import re -import simplejson as json +from canonicaljson import json from six import string_types diff --git a/synapse/storage/tags.py b/synapse/storage/tags.py index 6671d3cfca..04d123ed95 100644 --- a/synapse/storage/tags.py +++ b/synapse/storage/tags.py @@ -19,7 +19,8 @@ from synapse.storage.account_data import AccountDataWorkerStore from synapse.util.caches.descriptors import cached from twisted.internet import defer -import simplejson as json +from canonicaljson import json + import logging from six.moves import range diff --git a/synapse/storage/transactions.py b/synapse/storage/transactions.py index e485d19b84..acbc03446e 100644 --- a/synapse/storage/transactions.py +++ b/synapse/storage/transactions.py @@ -19,12 +19,11 @@ from synapse.util.caches.descriptors import cached from twisted.internet import defer import six -from canonicaljson import encode_canonical_json +from canonicaljson import encode_canonical_json, json from collections import namedtuple import logging -import simplejson as json # py2 sqlite has buffer hardcoded as only binary type, so we must use it, # despite being deprecated and removed in favor of memoryview diff --git a/synapse/storage/user_erasure_store.py b/synapse/storage/user_erasure_store.py new file mode 100644 index 0000000000..47bfc01e84 --- /dev/null +++ b/synapse/storage/user_erasure_store.py @@ -0,0 +1,103 @@ +# -*- coding: utf-8 -*- +# Copyright 2018 New Vector 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. +import operator + +from twisted.internet import defer + +from synapse.storage._base import SQLBaseStore +from synapse.util.caches.descriptors import cachedList, cached + + +class UserErasureWorkerStore(SQLBaseStore): + @cached() + def is_user_erased(self, user_id): + """ + Check if the given user id has requested erasure + + Args: + user_id (str): full user id to check + + Returns: + Deferred[bool]: True if the user has requested erasure + """ + return self._simple_select_onecol( + table="erased_users", + keyvalues={"user_id": user_id}, + retcol="1", + desc="is_user_erased", + ).addCallback(operator.truth) + + @cachedList( + cached_method_name="is_user_erased", + list_name="user_ids", + inlineCallbacks=True, + ) + def are_users_erased(self, user_ids): + """ + Checks which users in a list have requested erasure + + Args: + user_ids (iterable[str]): full user id to check + + Returns: + Deferred[dict[str, bool]]: + for each user, whether the user has requested erasure. + """ + # this serves the dual purpose of (a) making sure we can do len and + # iterate it multiple times, and (b) avoiding duplicates. + user_ids = tuple(set(user_ids)) + + def _get_erased_users(txn): + txn.execute( + "SELECT user_id FROM erased_users WHERE user_id IN (%s)" % ( + ",".join("?" * len(user_ids)) + ), + user_ids, + ) + return set(r[0] for r in txn) + + erased_users = yield self.runInteraction( + "are_users_erased", _get_erased_users, + ) + res = dict((u, u in erased_users) for u in user_ids) + defer.returnValue(res) + + +class UserErasureStore(UserErasureWorkerStore): + def mark_user_erased(self, user_id): + """Indicate that user_id wishes their message history to be erased. + + Args: + user_id (str): full user_id to be erased + """ + def f(txn): + # first check if they are already in the list + txn.execute( + "SELECT 1 FROM erased_users WHERE user_id = ?", + (user_id, ) + ) + if txn.fetchone(): + return + + # they are not already there: do the insert. + txn.execute( + "INSERT INTO erased_users (user_id) VALUES (?)", + (user_id, ) + ) + + self._invalidate_cache_and_stream( + txn, self.is_user_erased, (user_id,) + ) + return self.runInteraction("mark_user_erased", f) diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py index 2a3df7c71d..e9886ef299 100644 --- a/synapse/util/__init__.py +++ b/synapse/util/__init__.py @@ -34,6 +34,9 @@ def unwrapFirstError(failure): class Clock(object): """ A Clock wraps a Twisted reactor and provides utilities on top of it. + + Args: + reactor: The Twisted reactor to use. """ _reactor = attr.ib() diff --git a/synapse/util/caches/stream_change_cache.py b/synapse/util/caches/stream_change_cache.py index 817118e30f..0fb8620001 100644 --- a/synapse/util/caches/stream_change_cache.py +++ b/synapse/util/caches/stream_change_cache.py @@ -78,7 +78,8 @@ class StreamChangeCache(object): not_known_entities = set(entities) - set(self._entity_to_key) result = ( - set(self._cache.values()[self._cache.bisect_right(stream_pos) :]) + {self._cache[k] for k in self._cache.islice( + start=self._cache.bisect_right(stream_pos))} .intersection(entities) .union(not_known_entities) ) @@ -113,7 +114,8 @@ class StreamChangeCache(object): assert type(stream_pos) is int if stream_pos >= self._earliest_known_stream_pos: - return self._cache.values()[self._cache.bisect_right(stream_pos) :] + return [self._cache[k] for k in self._cache.islice( + start=self._cache.bisect_right(stream_pos))] else: return None diff --git a/synapse/util/frozenutils.py b/synapse/util/frozenutils.py index 15f0a7ba9e..535e7d0e7a 100644 --- a/synapse/util/frozenutils.py +++ b/synapse/util/frozenutils.py @@ -14,7 +14,7 @@ # limitations under the License. from frozendict import frozendict -import simplejson as json +from canonicaljson import json from six import string_types diff --git a/synapse/visibility.py b/synapse/visibility.py index aef4953c1d..65d79cf0d0 100644 --- a/synapse/visibility.py +++ b/synapse/visibility.py @@ -12,15 +12,17 @@ # 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. - +import itertools import logging +import operator from twisted.internet import defer -from synapse.api.constants import Membership, EventTypes - -from synapse.util.logcontext import make_deferred_yieldable, preserve_fn - +from synapse.api.constants import EventTypes, Membership +from synapse.events.utils import prune_event +from synapse.util.logcontext import ( + make_deferred_yieldable, preserve_fn, +) logger = logging.getLogger(__name__) @@ -95,16 +97,27 @@ def filter_events_for_client(store, user_id, events, is_peeking=False, if ignore_dict_content else [] ) + erased_senders = yield store.are_users_erased((e.sender for e in events)) + def allowed(event): """ Args: event (synapse.events.EventBase): event to check + + Returns: + None|EventBase: + None if the user cannot see this event at all + + a redacted copy of the event if they can only see a redacted + version + + the original event if they can see it as normal. """ if not event.is_state() and event.sender in ignore_list: - return False + return None if event.event_id in always_include_ids: - return True + return event state = event_id_to_state[event.event_id] @@ -118,10 +131,6 @@ def filter_events_for_client(store, user_id, events, is_peeking=False, if visibility not in VISIBILITY_PRIORITY: visibility = "shared" - # if it was world_readable, it's easy: everyone can read it - if visibility == "world_readable": - return True - # Always allow history visibility events on boundaries. This is done # by setting the effective visibility to the least restrictive # of the old vs new. @@ -155,7 +164,7 @@ def filter_events_for_client(store, user_id, events, is_peeking=False, if membership == "leave" and ( prev_membership == "join" or prev_membership == "invite" ): - return True + return event new_priority = MEMBERSHIP_PRIORITY.index(membership) old_priority = MEMBERSHIP_PRIORITY.index(prev_membership) @@ -166,31 +175,55 @@ def filter_events_for_client(store, user_id, events, is_peeking=False, if membership is None: membership_event = state.get((EventTypes.Member, user_id), None) if membership_event: + # XXX why do we do this? + # https://github.com/matrix-org/synapse/issues/3350 if membership_event.event_id not in event_id_forgotten: membership = membership_event.membership # if the user was a member of the room at the time of the event, # they can see it. if membership == Membership.JOIN: - return True + return event + + # otherwise, it depends on the room visibility. if visibility == "joined": # we weren't a member at the time of the event, so we can't # see this event. - return False + return None elif visibility == "invited": # user can also see the event if they were *invited* at the time # of the event. - return membership == Membership.INVITE - - else: - # visibility is shared: user can also see the event if they have - # become a member since the event + return ( + event if membership == Membership.INVITE else None + ) + + elif visibility == "shared" and is_peeking: + # if the visibility is shared, users cannot see the event unless + # they have *subequently* joined the room (or were members at the + # time, of course) # # XXX: if the user has subsequently joined and then left again, # ideally we would share history up to the point they left. But - # we don't know when they left. - return not is_peeking + # we don't know when they left. We just treat it as though they + # never joined, and restrict access. + return None + + # the visibility is either shared or world_readable, and the user was + # not a member at the time. We allow it, provided the original sender + # has not requested their data to be erased, in which case, we return + # a redacted version. + if erased_senders[event.sender]: + return prune_event(event) + + return event + + # check each event: gives an iterable[None|EventBase] + filtered_events = itertools.imap(allowed, events) + + # remove the None entries + filtered_events = filter(operator.truth, filtered_events) - defer.returnValue(list(filter(allowed, events))) + # we turn it into a list before returning it. + defer.returnValue(list(filtered_events)) |