diff options
| -rw-r--r-- | synapse/rest/client/v1/admin.py | 25 | ||||
| -rw-r--r-- | synapse/rest/media/v1/download_resource.py | 2 | ||||
| -rw-r--r-- | synapse/rest/media/v1/media_repository.py | 2 | ||||
| -rw-r--r-- | synapse/rest/media/v1/thumbnail_resource.py | 4 | ||||
| -rw-r--r-- | synapse/storage/media_repository.py | 4 | ||||
| -rw-r--r-- | synapse/storage/room.py | 72 | ||||
| -rw-r--r-- | synapse/storage/schema/delta/43/quarantine_media.sql | 17 |
7 files changed, 121 insertions, 5 deletions
diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/client/v1/admin.py index aaa3dffb1b..7d786e8de3 100644 --- a/synapse/rest/client/v1/admin.py +++ b/synapse/rest/client/v1/admin.py @@ -270,6 +270,30 @@ class ShutdownRoomRestServlet(ClientV1RestServlet): })) +class QuarantineMediaInRoom(ClientV1RestServlet): + """Quarantines all media in a room so that no one can download it via + this server. + """ + PATTERNS = client_path_patterns("/admin/quarantine_media/(?P<room_id>[^/]+)") + + def __init__(self, hs): + super(QuarantineMediaInRoom, self).__init__(hs) + self.store = hs.get_datastore() + + @defer.inlineCallbacks + def on_POST(self, request, room_id): + requester = yield self.auth.get_user_by_req(request) + is_admin = yield self.auth.is_server_admin(requester.user) + if not is_admin: + raise AuthError(403, "You are not a server admin") + + num_quarantined = yield self.store.quarantine_media_ids_in_room( + room_id, requester.user.to_string(), + ) + + defer.returnValue((200, {"num_quarantined": num_quarantined})) + + class ResetPasswordRestServlet(ClientV1RestServlet): """Post request to allow an administrator reset password for a user. This need a user have a administrator access in Synapse. @@ -467,3 +491,4 @@ def register_servlets(hs, http_server): GetUsersPaginatedRestServlet(hs).register(http_server) SearchUsersRestServlet(hs).register(http_server) ShutdownRoomRestServlet(hs).register(http_server) + QuarantineMediaInRoom(hs).register(http_server) diff --git a/synapse/rest/media/v1/download_resource.py b/synapse/rest/media/v1/download_resource.py index 6788375e85..39a286b83c 100644 --- a/synapse/rest/media/v1/download_resource.py +++ b/synapse/rest/media/v1/download_resource.py @@ -66,7 +66,7 @@ class DownloadResource(Resource): @defer.inlineCallbacks def _respond_local_file(self, request, media_id, name): media_info = yield self.store.get_local_media(media_id) - if not media_info: + if not media_info or media_info["quarantined_by"]: respond_404(request) return diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py index bae2b4c757..0718f75241 100644 --- a/synapse/rest/media/v1/media_repository.py +++ b/synapse/rest/media/v1/media_repository.py @@ -135,6 +135,8 @@ class MediaRepository(object): media_info = yield self._download_remote_file( server_name, media_id ) + elif media_info["quarantined_by"]: + raise NotFoundError() else: self.recently_accessed_remotes.add((server_name, media_id)) yield self.store.update_cached_last_access_time( diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py index d8f54adc99..59b2c39b2f 100644 --- a/synapse/rest/media/v1/thumbnail_resource.py +++ b/synapse/rest/media/v1/thumbnail_resource.py @@ -81,7 +81,7 @@ class ThumbnailResource(Resource): method, m_type): media_info = yield self.store.get_local_media(media_id) - if not media_info: + if not media_info or media_info["quarantined_by"]: respond_404(request) return @@ -117,7 +117,7 @@ class ThumbnailResource(Resource): desired_type): media_info = yield self.store.get_local_media(media_id) - if not media_info: + if not media_info or media_info["quarantined_by"]: respond_404(request) return diff --git a/synapse/storage/media_repository.py b/synapse/storage/media_repository.py index 4c0f82353d..5f0f18ee66 100644 --- a/synapse/storage/media_repository.py +++ b/synapse/storage/media_repository.py @@ -30,7 +30,7 @@ class MediaRepositoryStore(SQLBaseStore): return self._simple_select_one( "local_media_repository", {"media_id": media_id}, - ("media_type", "media_length", "upload_name", "created_ts"), + ("media_type", "media_length", "upload_name", "created_ts", "quarantined_by"), allow_none=True, desc="get_local_media", ) @@ -138,7 +138,7 @@ class MediaRepositoryStore(SQLBaseStore): {"media_origin": origin, "media_id": media_id}, ( "media_type", "media_length", "upload_name", "created_ts", - "filesystem_id", + "filesystem_id", "quarantined_by", ), allow_none=True, desc="get_cached_remote_media", diff --git a/synapse/storage/room.py b/synapse/storage/room.py index 07366f66b6..23688430b7 100644 --- a/synapse/storage/room.py +++ b/synapse/storage/room.py @@ -24,6 +24,7 @@ from .engines import PostgresEngine, Sqlite3Engine import collections import logging import ujson as json +import re logger = logging.getLogger(__name__) @@ -531,3 +532,74 @@ class RoomStore(SQLBaseStore): desc="block_room", ) self.is_room_blocked.invalidate((room_id,)) + + def quarantine_media_ids_in_room(self, room_id, quarantined_by): + """For a room loops through all events with media and quarantines + the associated media + """ + def _get_media_ids_in_room(txn): + mxc_re = re.compile("^mxc://([^/]+)/([^/#?]+)") + + next_token = self.get_current_events_token() + 1 + + total_media_quarantined = 0 + + while next_token: + sql = """ + SELECT stream_ordering, content FROM events + WHERE room_id = ? + AND stream_ordering < ? + AND contains_url = ? AND outlier = ? + ORDER BY stream_ordering DESC + LIMIT ? + """ + txn.execute(sql, (room_id, next_token, True, False, 100)) + + next_token = None + local_media_mxcs = [] + remote_media_mxcs = [] + for stream_ordering, content_json in txn: + next_token = stream_ordering + content = json.loads(content_json) + + content_url = content.get("url") + thumbnail_url = content.get("info", {}).get("thumbnail_url") + + for url in (content_url, thumbnail_url): + if not url: + continue + matches = mxc_re.match(url) + if matches: + hostname = matches.group(1) + media_id = matches.group(2) + if hostname == self.hostname: + local_media_mxcs.append(media_id) + else: + remote_media_mxcs.append((hostname, media_id)) + + # Now update all the tables to set the quarantined_by flag + + txn.executemany(""" + UPDATE local_media_repository + SET quarantined_by = ? + WHERE media_id = ? + """, ((quarantined_by, media_id) for media_id in local_media_mxcs)) + + txn.executemany( + """ + UPDATE remote_media_cache + SET quarantined_by = ? + WHERE media_origin AND media_id = ? + """, + ( + (quarantined_by, origin, media_id) + for origin, media_id in remote_media_mxcs + ) + ) + + total_media_quarantined += len(local_media_mxcs) + total_media_quarantined += len(remote_media_mxcs) + + return total_media_quarantined + + return self.runInteraction("get_media_ids_in_room", _get_media_ids_in_room) diff --git a/synapse/storage/schema/delta/43/quarantine_media.sql b/synapse/storage/schema/delta/43/quarantine_media.sql new file mode 100644 index 0000000000..630907ec4f --- /dev/null +++ b/synapse/storage/schema/delta/43/quarantine_media.sql @@ -0,0 +1,17 @@ +/* Copyright 2017 Vector Creations 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. + */ + +ALTER TABLE local_media_repository ADD COLUMN quarantined_by TEXT; +ALTER TABLE remote_media_cache ADD COLUMN quarantined_by TEXT; |