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Matthew Hodgson 2017-12-05 17:54:48 +00:00 committed by Hubert Chathi
parent 53ace904b2
commit 0bc4627a73
3 changed files with 84 additions and 19 deletions
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46
synapse/handlers/e2e_room_keys.py
View File

@ -20,8 +20,7 @@ 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.async import Linearizer
from synapse.util.retryutils import NotRetryingDestination
logger = logging.getLogger(__name__)
@ -30,31 +29,48 @@ logger = logging.getLogger(__name__)
class E2eRoomKeysHandler(object):
def __init__(self, hs):
self.store = hs.get_datastore()
self._upload_linearizer = async.Linearizer("upload_room_keys_lock")
@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 delete_room_keys(self, user_id, version, room_id, session_id):
yield self.store.delete_e2e_room_keys(user_id, version, room_id, session_id)
@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]
# XXX: perhaps we should use a finer grained lock here?
with (yield self._upload_linearizer.queue(user_id):
# get a lock
# go through the room_keys
for room_id in room_keys['rooms']:
for session_id in room_keys['rooms'][room_id]['sessions']:
room_key = room_keys['rooms'][room_id]['sessions'][session_id]
# get the room_key for this particular row
yield self.store.get_e2e_room_key()
# get the room_key for this particular row
current_room_key = yield self.store.get_e2e_room_key(
user_id, version, room_id, session_id
)
# check whether we merge or not
if()
# check whether we merge or not. spelling it out with if/elifs rather than
# lots of booleans for legibility.
replace = False
if current_room_key:
if room_key['is_verified'] and not current_room_key['is_verified']:
replace = True
elif room_key['first_message_index'] < current_room_key['first_message_index']:
replace = True
elif room_key['forwarded_count'] < room_key['forwarded_count']:
replace = True
# if so, we set it
yield self.store.set_e2e_room_key()
# release the lock
# if so, we set the new room_key
if replace:
yield self.store.set_e2e_room_key(
user_id, version, room_id, session_id, room_key
)

37
synapse/rest/client/v2_alpha/room_keys.py
View File

@ -28,7 +28,7 @@ from ._base import client_v2_patterns
logger = logging.getLogger(__name__)
class RoomKeysUploadServlet(RestServlet):
class RoomKeysServlet(RestServlet):
PATTERNS = client_v2_patterns("/room_keys/keys(/(?P<room_id>[^/]+))?(/(?P<session_id>[^/]+))?$")
def __init__(self, hs):
@ -41,16 +41,45 @@ class RoomKeysUploadServlet(RestServlet):
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)
def on_PUT(self, request, room_id, session_id):
requester = yield self.auth.get_user_by_req(request, allow_guest=False)
user_id = requester.user.to_string()
body = parse_json_object_from_request(request)
version = request.args.get("version", None)
if session_id:
body = { "sessions": { session_id : body } }
if room_id:
body = { "rooms": { room_id : body } }
result = yield self.e2e_room_keys_handler.upload_room_keys(
user_id, version, body
)
defer.returnValue((200, result))
@defer.inlineCallbacks
def on_GET(self, request, room_id, session_id):
requester = yield self.auth.get_user_by_req(request, allow_guest=False)
user_id = requester.user.to_string()
version = request.args.get("version", None)
room_keys = yield self.e2e_room_keys_handler.get_room_keys(
user_id, version, room_id, session_id
)
defer.returnValue((200, room_keys))
@defer.inlineCallbacks
def on_DELETE(self, request, room_id, session_id):
requester = yield self.auth.get_user_by_req(request, allow_guest=False)
user_id = requester.user.to_string()
version = request.args.get("version", None)
yield self.e2e_room_keys_handler.delete_room_keys(
user_id, version, room_id, session_id
)
defer.returnValue((200, {}))
def register_servlets(hs, http_server):
RoomKeysUploadServlet(hs).register(http_server)
RoomKeysServlet(hs).register(http_server)

20
synapse/storage/e2e_room_keys.py
View File

@ -12,6 +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
from synapse.util.caches.descriptors import cached
@ -77,6 +78,9 @@ class EndToEndRoomKeyStore(SQLBaseStore):
)
# XXX: this isn't currently used and isn't tested anywhere
# it could be used in future for bulk-uploading new versions of room_keys
# for a user or something though.
def set_e2e_room_keys(self, user_id, version, room_keys):
def _set_e2e_room_keys_txn(txn):
@ -131,3 +135,19 @@ class EndToEndRoomKeyStore(SQLBaseStore):
sessions = {}
sessions['rooms'][roomId]['sessions'][session_id] = row for row in rows;
defer.returnValue(sessions);
@defer.inlineCallbacks
def delete_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
yield self._simple_delete(
table="e2e_room_keys",
keyvalues=keyvalues,
desc="delete_e2e_room_keys",
)