diff options
| -rw-r--r-- | synapse/handlers/e2e_room_keys.py | 60 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/room_keys.py | 56 | ||||
| -rw-r--r-- | synapse/storage/e2e_room_keys.py | 133 | ||||
| -rw-r--r-- | synapse/storage/schema/delta/46/e2e_room_keys.sql | 40 |
4 files changed, 289 insertions, 0 deletions
diff --git a/synapse/handlers/e2e_room_keys.py b/synapse/handlers/e2e_room_keys.py new file mode 100644 index 0000000000..78c838a829 --- /dev/null +++ b/synapse/handlers/e2e_room_keys.py @@ -0,0 +1,60 @@ +# -*- coding: utf-8 -*- +# Copyright 2017 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 ujson as json +import logging + +from canonicaljson import encode_canonical_json +from twisted.internet import defer + +from synapse.api.errors import SynapseError, CodeMessageException +from synapse.types import get_domain_from_id +from synapse.util.logcontext import preserve_fn, make_deferred_yieldable +from synapse.util.retryutils import NotRetryingDestination + +logger = logging.getLogger(__name__) + + +class E2eRoomKeysHandler(object): + def __init__(self, hs): + self.store = hs.get_datastore() + + @defer.inlineCallbacks + def get_room_keys(self, user_id, version, room_id, session_id): + results = yield self.store.get_e2e_room_keys(user_id, version, room_id, session_id) + defer.returnValue(results) + + @defer.inlineCallbacks + def upload_room_keys(self, user_id, version, room_keys): + + # TODO: Validate the JSON to make sure it has the right keys. + + # go through the room_keys + for room_id in room_keys['rooms']: + for session_id in room_keys['rooms'][room_id]['sessions']: + session = room_keys['rooms'][room_id]['sessions'][session_id] + + # get a lock + + # get the room_key for this particular row + yield self.store.get_e2e_room_key() + + # check whether we merge or not + if() + + # if so, we set it + yield self.store.set_e2e_room_key() + + # release the lock diff --git a/synapse/rest/client/v2_alpha/room_keys.py b/synapse/rest/client/v2_alpha/room_keys.py new file mode 100644 index 0000000000..9b93001919 --- /dev/null +++ b/synapse/rest/client/v2_alpha/room_keys.py @@ -0,0 +1,56 @@ +# -*- coding: utf-8 -*- +# Copyright 2017 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 logging + +from twisted.internet import defer + +from synapse.api.errors import SynapseError +from synapse.http.servlet import ( + RestServlet, parse_json_object_from_request, parse_integer +) +from synapse.http.servlet import parse_string +from synapse.types import StreamToken +from ._base import client_v2_patterns + +logger = logging.getLogger(__name__) + + +class RoomKeysUploadServlet(RestServlet): + PATTERNS = client_v2_patterns("/room_keys/keys(/(?P<room_id>[^/]+))?(/(?P<session_id>[^/]+))?$") + + def __init__(self, hs): + """ + Args: + hs (synapse.server.HomeServer): server + """ + super(RoomKeysUploadServlet, self).__init__() + self.auth = hs.get_auth() + self.e2e_room_keys_handler = hs.get_e2e_room_keys_handler() + + @defer.inlineCallbacks + def on_POST(self, request, room_id, session_id): + requester = yield self.auth.get_user_by_req(request, allow_guest=True) + user_id = requester.user.to_string() + body = parse_json_object_from_request(request) + + result = yield self.e2e_room_keys_handler.upload_room_keys( + user_id, version, body + ) + defer.returnValue((200, result)) + + +def register_servlets(hs, http_server): + RoomKeysUploadServlet(hs).register(http_server) diff --git a/synapse/storage/e2e_room_keys.py b/synapse/storage/e2e_room_keys.py new file mode 100644 index 0000000000..9f6d47e1b6 --- /dev/null +++ b/synapse/storage/e2e_room_keys.py @@ -0,0 +1,133 @@ +# -*- coding: utf-8 -*- +# Copyright 2017 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. +from twisted.internet import defer + +from synapse.util.caches.descriptors import cached + +from canonicaljson import encode_canonical_json +import ujson as json + +from ._base import SQLBaseStore + + +class EndToEndRoomKeyStore(SQLBaseStore): + + @defer.inlineCallbacks + def get_e2e_room_key(self, user_id, version, room_id, session_id): + + row = yield self._simple_select_one( + table="e2e_room_keys", + keyvalues={ + "user_id": user_id, + "version": version, + "room_id": room_id, + "session_id": session_id, + }, + retcols=( + "first_message_index", + "forwarded_count", + "is_verified", + "session_data", + ), + desc="get_e2e_room_key", + ) + + defer.returnValue(row); + + def set_e2e_room_key(self, user_id, version, room_id, session_id, room_key): + + def _set_e2e_room_key_txn(txn): + + self._simple_upsert( + txn, + table="e2e_room_keys", + keyvalues={ + "user_id": user_id, + "room_id": room_id, + "session_id": session_id, + } + values=[ + { + "version": version, + "first_message_index": room_key['first_message_index'], + "forwarded_count": room_key['forwarded_count'], + "is_verified": room_key['is_verified'], + "session_data": room_key['session_data'], + } + ], + lock=False, + ) + + return True + + return self.runInteraction( + "set_e2e_room_key", _set_e2e_room_key_txn + ) + + + def set_e2e_room_keys(self, user_id, version, room_keys): + + def _set_e2e_room_keys_txn(txn): + + self._simple_insert_many_txn( + txn, + table="e2e_room_keys", + values=[ + { + "user_id": user_id, + "room_id": room_id, + "session_id": session_id, + "version": version, + "first_message_index": room_keys['rooms'][room_id]['sessions'][session_id]['first_message_index'], + "forwarded_count": room_keys['rooms'][room_id]['sessions'][session_id]['forwarded_count'], + "is_verified": room_keys['rooms'][room_id]['sessions'][session_id]['is_verified'], + "session_data": room_keys['rooms'][room_id]['sessions'][session_id]['session_data'], + } + for session_id in room_keys['rooms'][room_id]['sessions'] + for room_id in room_keys['rooms'] + ] + ) + + return True + + return self.runInteraction( + "set_e2e_room_keys", _set_e2e_room_keys_txn + ) + + @defer.inlineCallbacks + def get_e2e_room_keys(self, user_id, version, room_id, session_id): + + keyvalues={ + "user_id": user_id, + "version": version, + } + if room_id: keyvalues['room_id'] = room_id + if session_id: keyvalues['session_id'] = session_id + + rows = yield self._simple_select_list( + table="e2e_room_keys", + keyvalues=keyvalues, + retcols=( + "first_message_index", + "forwarded_count", + "is_verified", + "session_data", + ), + desc="get_e2e_room_keys", + ) + + sessions = {} + sessions['rooms'][roomId]['sessions'][session_id] = row for row in rows; + defer.returnValue(sessions); diff --git a/synapse/storage/schema/delta/46/e2e_room_keys.sql b/synapse/storage/schema/delta/46/e2e_room_keys.sql new file mode 100644 index 0000000000..51b826e8b3 --- /dev/null +++ b/synapse/storage/schema/delta/46/e2e_room_keys.sql @@ -0,0 +1,40 @@ +/* Copyright 2017 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. + */ + +-- users' optionally backed up encrypted e2e sessions +CREATE TABLE e2e_room_keys ( + user_id TEXT NOT NULL, + room_id TEXT NOT NULL, + session_id TEXT NOT NULL, + version INT NOT NULL, + first_message_index INT, + forwarded_count INT, + is_verified BOOLEAN, + session_data TEXT NOT NULL +); + +CREATE UNIQUE INDEX e2e_room_keys_user_idx ON e2e_room_keys(user_id); +CREATE UNIQUE INDEX e2e_room_keys_room_idx ON e2e_room_keys(room_id); +CREATE UNIQUE INDEX e2e_room_keys_session_idx ON e2e_room_keys(session_id); + +-- the versioning metadata about versions of users' encrypted e2e session backups +CREATE TABLE e2e_room_key_versions ( + user_id TEXT NOT NULL, + version INT NOT NULL, + algorithm TEXT NOT NULL, + dummy_session_data TEXT NOT NULL +); + +CREATE UNIQUE INDEX e2e_room_key_user_idx ON e2e_room_keys(user_id); |