diff options
| -rw-r--r-- | changelog.d/6681.feature | 1 | ||||
| -rw-r--r-- | docs/admin_api/media_admin_api.md | 76 | ||||
| -rw-r--r-- | docs/workers.md | 4 | ||||
| -rw-r--r-- | synapse/rest/admin/media.py | 68 | ||||
| -rw-r--r-- | synapse/storage/data_stores/main/room.py | 116 | ||||
| -rw-r--r-- | tests/rest/admin/test_admin.py | 341 | ||||
| -rw-r--r-- | tests/rest/client/v1/utils.py | 37 |
7 files changed, 632 insertions, 11 deletions
diff --git a/changelog.d/6681.feature b/changelog.d/6681.feature new file mode 100644 index 0000000000..5cf19a4e0e --- /dev/null +++ b/changelog.d/6681.feature @@ -0,0 +1 @@ +Add new quarantine media admin APIs to quarantine by media ID or by user who uploaded the media. diff --git a/docs/admin_api/media_admin_api.md b/docs/admin_api/media_admin_api.md index 8b3666d5f5..46ba7a1a71 100644 --- a/docs/admin_api/media_admin_api.md +++ b/docs/admin_api/media_admin_api.md @@ -22,19 +22,81 @@ It returns a JSON body like the following: } ``` -# Quarantine media in a room +# Quarantine media -This API 'quarantines' all the media in a room. +Quarantining media means that it is marked as inaccessible by users. It applies +to any local media, and any locally-cached copies of remote media. -The API is: +The media file itself (and any thumbnails) is not deleted from the server. + +## Quarantining media by ID + +This API quarantines a single piece of local or remote media. + +Request: ``` -POST /_synapse/admin/v1/quarantine_media/<room_id> +POST /_synapse/admin/v1/media/quarantine/<server_name>/<media_id> {} ``` -Quarantining media means that it is marked as inaccessible by users. It applies -to any local media, and any locally-cached copies of remote media. +Where `server_name` is in the form of `example.org`, and `media_id` is in the +form of `abcdefg12345...`. + +Response: + +``` +{} +``` + +## Quarantining media in a room + +This API quarantines all local and remote media in a room. + +Request: + +``` +POST /_synapse/admin/v1/room/<room_id>/media/quarantine + +{} +``` + +Where `room_id` is in the form of `!roomid12345:example.org`. + +Response: + +``` +{ + "num_quarantined": 10 # The number of media items successfully quarantined +} +``` + +Note that there is a legacy endpoint, `POST +/_synapse/admin/v1/quarantine_media/<room_id >`, that operates the same. +However, it is deprecated and may be removed in a future release. + +## Quarantining all media of a user + +This API quarantines all *local* media that a *local* user has uploaded. That is to say, if +you would like to quarantine media uploaded by a user on a remote homeserver, you should +instead use one of the other APIs. + +Request: + +``` +POST /_synapse/admin/v1/user/<user_id>/media/quarantine + +{} +``` + +Where `user_id` is in the form of `@bob:example.org`. + +Response: + +``` +{ + "num_quarantined": 10 # The number of media items successfully quarantined +} +``` -The media file itself (and any thumbnails) is not deleted from the server. diff --git a/docs/workers.md b/docs/workers.md index f4283aeb05..0ab269fd96 100644 --- a/docs/workers.md +++ b/docs/workers.md @@ -202,7 +202,9 @@ Handles the media repository. It can handle all endpoints starting with: ... and the following regular expressions matching media-specific administration APIs: ^/_synapse/admin/v1/purge_media_cache$ - ^/_synapse/admin/v1/room/.*/media$ + ^/_synapse/admin/v1/room/.*/media.*$ + ^/_synapse/admin/v1/user/.*/media.*$ + ^/_synapse/admin/v1/media/.*$ ^/_synapse/admin/v1/quarantine_media/.*$ You should also set `enable_media_repo: False` in the shared configuration diff --git a/synapse/rest/admin/media.py b/synapse/rest/admin/media.py index fa833e54cf..3a445d6eed 100644 --- a/synapse/rest/admin/media.py +++ b/synapse/rest/admin/media.py @@ -32,16 +32,24 @@ class QuarantineMediaInRoom(RestServlet): this server. """ - PATTERNS = historical_admin_path_patterns("/quarantine_media/(?P<room_id>[^/]+)") + PATTERNS = ( + historical_admin_path_patterns("/room/(?P<room_id>[^/]+)/media/quarantine") + + + # This path kept around for legacy reasons + historical_admin_path_patterns("/quarantine_media/(?P<room_id>![^/]+)") + ) def __init__(self, hs): self.store = hs.get_datastore() self.auth = hs.get_auth() - async def on_POST(self, request, room_id): + async def on_POST(self, request, room_id: str): requester = await self.auth.get_user_by_req(request) await assert_user_is_admin(self.auth, requester.user) + logging.info("Quarantining room: %s", room_id) + + # Quarantine all media in this room num_quarantined = await self.store.quarantine_media_ids_in_room( room_id, requester.user.to_string() ) @@ -49,6 +57,60 @@ class QuarantineMediaInRoom(RestServlet): return 200, {"num_quarantined": num_quarantined} +class QuarantineMediaByUser(RestServlet): + """Quarantines all local media by a given user so that no one can download it via + this server. + """ + + PATTERNS = historical_admin_path_patterns( + "/user/(?P<user_id>[^/]+)/media/quarantine" + ) + + def __init__(self, hs): + self.store = hs.get_datastore() + self.auth = hs.get_auth() + + async def on_POST(self, request, user_id: str): + requester = await self.auth.get_user_by_req(request) + await assert_user_is_admin(self.auth, requester.user) + + logging.info("Quarantining local media by user: %s", user_id) + + # Quarantine all media this user has uploaded + num_quarantined = await self.store.quarantine_media_ids_by_user( + user_id, requester.user.to_string() + ) + + return 200, {"num_quarantined": num_quarantined} + + +class QuarantineMediaByID(RestServlet): + """Quarantines local or remote media by a given ID so that no one can download + it via this server. + """ + + PATTERNS = historical_admin_path_patterns( + "/media/quarantine/(?P<server_name>[^/]+)/(?P<media_id>[^/]+)" + ) + + def __init__(self, hs): + self.store = hs.get_datastore() + self.auth = hs.get_auth() + + async def on_POST(self, request, server_name: str, media_id: str): + requester = await self.auth.get_user_by_req(request) + await assert_user_is_admin(self.auth, requester.user) + + logging.info("Quarantining local media by ID: %s/%s", server_name, media_id) + + # Quarantine this media id + await self.store.quarantine_media_by_id( + server_name, media_id, requester.user.to_string() + ) + + return 200, {} + + class ListMediaInRoom(RestServlet): """Lists all of the media in a given room. """ @@ -94,4 +156,6 @@ def register_servlets_for_media_repo(hs, http_server): """ PurgeMediaCacheRestServlet(hs).register(http_server) QuarantineMediaInRoom(hs).register(http_server) + QuarantineMediaByID(hs).register(http_server) + QuarantineMediaByUser(hs).register(http_server) ListMediaInRoom(hs).register(http_server) diff --git a/synapse/storage/data_stores/main/room.py b/synapse/storage/data_stores/main/room.py index 8636d75030..49bab62be3 100644 --- a/synapse/storage/data_stores/main/room.py +++ b/synapse/storage/data_stores/main/room.py @@ -18,7 +18,7 @@ import collections import logging import re from abc import abstractmethod -from typing import Optional, Tuple +from typing import List, Optional, Tuple from six import integer_types @@ -399,6 +399,8 @@ class RoomWorkerStore(SQLBaseStore): the associated media """ + logger.info("Quarantining media in room: %s", room_id) + def _quarantine_media_in_room_txn(txn): local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id) total_media_quarantined = 0 @@ -494,6 +496,118 @@ class RoomWorkerStore(SQLBaseStore): return local_media_mxcs, remote_media_mxcs + def quarantine_media_by_id( + self, server_name: str, media_id: str, quarantined_by: str, + ): + """quarantines a single local or remote media id + + Args: + server_name: The name of the server that holds this media + media_id: The ID of the media to be quarantined + quarantined_by: The user ID that initiated the quarantine request + """ + logger.info("Quarantining media: %s/%s", server_name, media_id) + is_local = server_name == self.config.server_name + + def _quarantine_media_by_id_txn(txn): + local_mxcs = [media_id] if is_local else [] + remote_mxcs = [(server_name, media_id)] if not is_local else [] + + return self._quarantine_media_txn( + txn, local_mxcs, remote_mxcs, quarantined_by + ) + + return self.db.runInteraction( + "quarantine_media_by_user", _quarantine_media_by_id_txn + ) + + def quarantine_media_ids_by_user(self, user_id: str, quarantined_by: str): + """quarantines all local media associated with a single user + + Args: + user_id: The ID of the user to quarantine media of + quarantined_by: The ID of the user who made the quarantine request + """ + + def _quarantine_media_by_user_txn(txn): + local_media_ids = self._get_media_ids_by_user_txn(txn, user_id) + return self._quarantine_media_txn(txn, local_media_ids, [], quarantined_by) + + return self.db.runInteraction( + "quarantine_media_by_user", _quarantine_media_by_user_txn + ) + + def _get_media_ids_by_user_txn(self, txn, user_id: str, filter_quarantined=True): + """Retrieves local media IDs by a given user + + Args: + txn (cursor) + user_id: The ID of the user to retrieve media IDs of + + Returns: + The local and remote media as a lists of tuples where the key is + the hostname and the value is the media ID. + """ + # Local media + sql = """ + SELECT media_id + FROM local_media_repository + WHERE user_id = ? + """ + if filter_quarantined: + sql += "AND quarantined_by IS NULL" + txn.execute(sql, (user_id,)) + + local_media_ids = [row[0] for row in txn] + + # TODO: Figure out all remote media a user has referenced in a message + + return local_media_ids + + def _quarantine_media_txn( + self, + txn, + local_mxcs: List[str], + remote_mxcs: List[Tuple[str, str]], + quarantined_by: str, + ) -> int: + """Quarantine local and remote media items + + Args: + txn (cursor) + local_mxcs: A list of local mxc URLs + remote_mxcs: A list of (remote server, media id) tuples representing + remote mxc URLs + quarantined_by: The ID of the user who initiated the quarantine request + Returns: + The total number of media items quarantined + """ + total_media_quarantined = 0 + + # 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_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_mxcs), + ) + + total_media_quarantined += len(local_mxcs) + total_media_quarantined += len(remote_mxcs) + + return total_media_quarantined + class RoomBackgroundUpdateStore(SQLBaseStore): REMOVE_TOMESTONED_ROOMS_BG_UPDATE = "remove_tombstoned_rooms_from_directory" diff --git a/tests/rest/admin/test_admin.py b/tests/rest/admin/test_admin.py index 6ceb483aa8..7a7e898843 100644 --- a/tests/rest/admin/test_admin.py +++ b/tests/rest/admin/test_admin.py @@ -14,11 +14,17 @@ # limitations under the License. import json +import os +import urllib.parse +from binascii import unhexlify from mock import Mock +from twisted.internet.defer import Deferred + import synapse.rest.admin from synapse.http.server import JsonResource +from synapse.logging.context import make_deferred_yieldable from synapse.rest.admin import VersionServlet from synapse.rest.client.v1 import events, login, room from synapse.rest.client.v2_alpha import groups @@ -346,3 +352,338 @@ class PurgeRoomTestCase(unittest.HomeserverTestCase): self.assertEqual(count, 0, msg="Rows not purged in {}".format(table)) test_purge_room.skip = "Disabled because it's currently broken" + + +class QuarantineMediaTestCase(unittest.HomeserverTestCase): + """Test /quarantine_media admin API. + """ + + servlets = [ + synapse.rest.admin.register_servlets, + synapse.rest.admin.register_servlets_for_media_repo, + login.register_servlets, + room.register_servlets, + ] + + def prepare(self, reactor, clock, hs): + self.store = hs.get_datastore() + self.hs = hs + + # Allow for uploading and downloading to/from the media repo + self.media_repo = hs.get_media_repository_resource() + self.download_resource = self.media_repo.children[b"download"] + self.upload_resource = self.media_repo.children[b"upload"] + self.image_data = unhexlify( + b"89504e470d0a1a0a0000000d4948445200000001000000010806" + b"0000001f15c4890000000a49444154789c63000100000500010d" + b"0a2db40000000049454e44ae426082" + ) + + def make_homeserver(self, reactor, clock): + + self.fetches = [] + + def get_file(destination, path, output_stream, args=None, max_size=None): + """ + Returns tuple[int,dict,str,int] of file length, response headers, + absolute URI, and response code. + """ + + def write_to(r): + data, response = r + output_stream.write(data) + return response + + d = Deferred() + d.addCallback(write_to) + self.fetches.append((d, destination, path, args)) + return make_deferred_yieldable(d) + + client = Mock() + client.get_file = get_file + + self.storage_path = self.mktemp() + self.media_store_path = self.mktemp() + os.mkdir(self.storage_path) + os.mkdir(self.media_store_path) + + config = self.default_config() + config["media_store_path"] = self.media_store_path + config["thumbnail_requirements"] = {} + config["max_image_pixels"] = 2000000 + + provider_config = { + "module": "synapse.rest.media.v1.storage_provider.FileStorageProviderBackend", + "store_local": True, + "store_synchronous": False, + "store_remote": True, + "config": {"directory": self.storage_path}, + } + config["media_storage_providers"] = [provider_config] + + hs = self.setup_test_homeserver(config=config, http_client=client) + + return hs + + def test_quarantine_media_requires_admin(self): + self.register_user("nonadmin", "pass", admin=False) + non_admin_user_tok = self.login("nonadmin", "pass") + + # Attempt quarantine media APIs as non-admin + url = "/_synapse/admin/v1/media/quarantine/example.org/abcde12345" + request, channel = self.make_request( + "POST", url.encode("ascii"), access_token=non_admin_user_tok, + ) + self.render(request) + + # Expect a forbidden error + self.assertEqual( + 403, + int(channel.result["code"]), + msg="Expected forbidden on quarantining media as a non-admin", + ) + + # And the roomID/userID endpoint + url = "/_synapse/admin/v1/room/!room%3Aexample.com/media/quarantine" + request, channel = self.make_request( + "POST", url.encode("ascii"), access_token=non_admin_user_tok, + ) + self.render(request) + + # Expect a forbidden error + self.assertEqual( + 403, + int(channel.result["code"]), + msg="Expected forbidden on quarantining media as a non-admin", + ) + + def test_quarantine_media_by_id(self): + self.register_user("id_admin", "pass", admin=True) + admin_user_tok = self.login("id_admin", "pass") + + self.register_user("id_nonadmin", "pass", admin=False) + non_admin_user_tok = self.login("id_nonadmin", "pass") + + # Upload some media into the room + response = self.helper.upload_media( + self.upload_resource, self.image_data, tok=admin_user_tok + ) + + # Extract media ID from the response + server_name_and_media_id = response["content_uri"][ + 6: + ] # Cut off the 'mxc://' bit + server_name, media_id = server_name_and_media_id.split("/") + + # Attempt to access the media + request, channel = self.make_request( + "GET", + server_name_and_media_id, + shorthand=False, + access_token=non_admin_user_tok, + ) + request.render(self.download_resource) + self.pump(1.0) + + # Should be successful + self.assertEqual(200, int(channel.code), msg=channel.result["body"]) + + # Quarantine the media + url = "/_synapse/admin/v1/media/quarantine/%s/%s" % ( + urllib.parse.quote(server_name), + urllib.parse.quote(media_id), + ) + request, channel = self.make_request("POST", url, access_token=admin_user_tok,) + self.render(request) + self.pump(1.0) + self.assertEqual(200, int(channel.code), msg=channel.result["body"]) + + # Attempt to access the media + request, channel = self.make_request( + "GET", + server_name_and_media_id, + shorthand=False, + access_token=admin_user_tok, + ) + request.render(self.download_resource) + self.pump(1.0) + + # Should be quarantined + self.assertEqual( + 404, + int(channel.code), + msg=( + "Expected to receive a 404 on accessing quarantined media: %s" + % server_name_and_media_id + ), + ) + + def test_quarantine_all_media_in_room(self): + self.register_user("room_admin", "pass", admin=True) + admin_user_tok = self.login("room_admin", "pass") + + non_admin_user = self.register_user("room_nonadmin", "pass", admin=False) + non_admin_user_tok = self.login("room_nonadmin", "pass") + + room_id = self.helper.create_room_as(non_admin_user, tok=admin_user_tok) + self.helper.join(room_id, non_admin_user, tok=non_admin_user_tok) + + # Upload some media + response_1 = self.helper.upload_media( + self.upload_resource, self.image_data, tok=non_admin_user_tok + ) + response_2 = self.helper.upload_media( + self.upload_resource, self.image_data, tok=non_admin_user_tok + ) + + # Extract mxcs + mxc_1 = response_1["content_uri"] + mxc_2 = response_2["content_uri"] + + # Send it into the room + self.helper.send_event( + room_id, + "m.room.message", + content={"body": "image-1", "msgtype": "m.image", "url": mxc_1}, + txn_id="111", + tok=non_admin_user_tok, + ) + self.helper.send_event( + room_id, + "m.room.message", + content={"body": "image-2", "msgtype": "m.image", "url": mxc_2}, + txn_id="222", + tok=non_admin_user_tok, + ) + + # Quarantine all media in the room + url = "/_synapse/admin/v1/room/%s/media/quarantine" % urllib.parse.quote( + room_id + ) + request, channel = self.make_request("POST", url, access_token=admin_user_tok,) + self.render(request) + self.pump(1.0) + self.assertEqual(200, int(channel.code), msg=channel.result["body"]) + self.assertEqual( + json.loads(channel.result["body"].decode("utf-8")), + {"num_quarantined": 2}, + "Expected 2 quarantined items", + ) + + # Convert mxc URLs to server/media_id strings + server_and_media_id_1 = mxc_1[6:] + server_and_media_id_2 = mxc_2[6:] + + # Test that we cannot download any of the media anymore + request, channel = self.make_request( + "GET", + server_and_media_id_1, + shorthand=False, + access_token=non_admin_user_tok, + ) + request.render(self.download_resource) + self.pump(1.0) + + # Should be quarantined + self.assertEqual( + 404, + int(channel.code), + msg=( + "Expected to receive a 404 on accessing quarantined media: %s" + % server_and_media_id_1 + ), + ) + + request, channel = self.make_request( + "GET", + server_and_media_id_2, + shorthand=False, + access_token=non_admin_user_tok, + ) + request.render(self.download_resource) + self.pump(1.0) + + # Should be quarantined + self.assertEqual( + 404, + int(channel.code), + msg=( + "Expected to receive a 404 on accessing quarantined media: %s" + % server_and_media_id_2 + ), + ) + + def test_quarantine_all_media_by_user(self): + self.register_user("user_admin", "pass", admin=True) + admin_user_tok = self.login("user_admin", "pass") + + non_admin_user = self.register_user("user_nonadmin", "pass", admin=False) + non_admin_user_tok = self.login("user_nonadmin", "pass") + + # Upload some media + response_1 = self.helper.upload_media( + self.upload_resource, self.image_data, tok=non_admin_user_tok + ) + response_2 = self.helper.upload_media( + self.upload_resource, self.image_data, tok=non_admin_user_tok + ) + + # Extract media IDs + server_and_media_id_1 = response_1["content_uri"][6:] + server_and_media_id_2 = response_2["content_uri"][6:] + + # Quarantine all media by this user + url = "/_synapse/admin/v1/user/%s/media/quarantine" % urllib.parse.quote( + non_admin_user + ) + request, channel = self.make_request( + "POST", url.encode("ascii"), access_token=admin_user_tok, + ) + self.render(request) + self.pump(1.0) + self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"]) + self.assertEqual( + json.loads(channel.result["body"].decode("utf-8")), + {"num_quarantined": 2}, + "Expected 2 quarantined items", + ) + + # Attempt to access each piece of media + request, channel = self.make_request( + "GET", + server_and_media_id_1, + shorthand=False, + access_token=non_admin_user_tok, + ) + request.render(self.download_resource) + self.pump(1.0) + + # Should be quarantined + self.assertEqual( + 404, + int(channel.code), + msg=( + "Expected to receive a 404 on accessing quarantined media: %s" + % server_and_media_id_1, + ), + ) + + # Attempt to access each piece of media + request, channel = self.make_request( + "GET", + server_and_media_id_2, + shorthand=False, + access_token=non_admin_user_tok, + ) + request.render(self.download_resource) + self.pump(1.0) + + # Should be quarantined + self.assertEqual( + 404, + int(channel.code), + msg=( + "Expected to receive a 404 on accessing quarantined media: %s" + % server_and_media_id_2 + ), + ) diff --git a/tests/rest/client/v1/utils.py b/tests/rest/client/v1/utils.py index e7417b3d14..873d5ef99c 100644 --- a/tests/rest/client/v1/utils.py +++ b/tests/rest/client/v1/utils.py @@ -21,6 +21,8 @@ import time import attr +from twisted.web.resource import Resource + from synapse.api.constants import Membership from tests.server import make_request, render @@ -160,3 +162,38 @@ class RestHelper(object): ) return channel.json_body + + def upload_media( + self, + resource: Resource, + image_data: bytes, + tok: str, + filename: str = "test.png", + expect_code: int = 200, + ) -> dict: + """Upload a piece of test media to the media repo + Args: + resource: The resource that will handle the upload request + image_data: The image data to upload + tok: The user token to use during the upload + filename: The filename of the media to be uploaded + expect_code: The return code to expect from attempting to upload the media + """ + image_length = len(image_data) + path = "/_matrix/media/r0/upload?filename=%s" % (filename,) + request, channel = make_request( + self.hs.get_reactor(), "POST", path, content=image_data, access_token=tok + ) + request.requestHeaders.addRawHeader( + b"Content-Length", str(image_length).encode("UTF-8") + ) + request.render(resource) + self.hs.get_reactor().pump([100]) + + assert channel.code == expect_code, "Expected: %d, got: %d, resp: %r" % ( + expect_code, + int(channel.result["code"]), + channel.result["body"], + ) + + return channel.json_body |