From ba26eb3d5d487edb90c21db7efec631b80adf24b Mon Sep 17 00:00:00 2001 From: Daniel Wagner-Hall Date: Tue, 17 Nov 2015 17:17:30 -0500 Subject: Allow users to forget rooms --- synapse/api/auth.py | 7 +++++ synapse/handlers/room.py | 3 ++ synapse/rest/client/v1/room.py | 13 ++++++-- synapse/storage/prepare_database.py | 2 +- synapse/storage/roommember.py | 36 ++++++++++++++++++++++ .../schema/delta/26/forgotten_memberships.sql | 24 +++++++++++++++ 6 files changed, 81 insertions(+), 4 deletions(-) create mode 100644 synapse/storage/schema/delta/26/forgotten_memberships.sql diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 8111b34428..6eaa1150a3 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -207,6 +207,13 @@ class Auth(object): user_id, room_id )) + if membership == Membership.LEAVE: + forgot = yield self.store.did_forget(user_id, room_id) + if forgot: + raise AuthError(403, "User %s not in room %s" % ( + user_id, room_id + )) + defer.returnValue(member) @defer.inlineCallbacks diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index 3f04752581..023b4001b8 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -743,6 +743,9 @@ class RoomMemberHandler(BaseHandler): ) defer.returnValue((token, public_key, key_validity_url, display_name)) + def forget(self, user, room_id): + self.store.forget(user.to_string(), room_id) + class RoomListHandler(BaseHandler): diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py index 139dac1cc3..6952d269ec 100644 --- a/synapse/rest/client/v1/room.py +++ b/synapse/rest/client/v1/room.py @@ -448,7 +448,7 @@ class RoomMembershipRestServlet(ClientV1RestServlet): def register(self, http_server): # /rooms/$roomid/[invite|join|leave] PATTERN = ("/rooms/(?P[^/]*)/" - "(?Pjoin|invite|leave|ban|kick)") + "(?Pjoin|invite|leave|ban|kick|forget)") register_txn_path(self, PATTERN, http_server) @defer.inlineCallbacks @@ -458,6 +458,8 @@ class RoomMembershipRestServlet(ClientV1RestServlet): allow_guest=True ) + effective_membership_action = membership_action + if is_guest and membership_action not in {Membership.JOIN, Membership.LEAVE}: raise AuthError(403, "Guest access not allowed") @@ -488,11 +490,13 @@ class RoomMembershipRestServlet(ClientV1RestServlet): UserID.from_string(state_key) if membership_action == "kick": - membership_action = "leave" + effective_membership_action = "leave" + elif membership_action == "forget": + effective_membership_action = "leave" msg_handler = self.handlers.message_handler - content = {"membership": unicode(membership_action)} + content = {"membership": unicode(effective_membership_action)} if is_guest: content["kind"] = "guest" @@ -509,6 +513,9 @@ class RoomMembershipRestServlet(ClientV1RestServlet): is_guest=is_guest, ) + if membership_action == "forget": + self.handlers.room_member_handler.forget(user, room_id) + defer.returnValue((200, {})) def _has_3pid_invite_keys(self, content): diff --git a/synapse/storage/prepare_database.py b/synapse/storage/prepare_database.py index 1a74d6e360..9800fd4203 100644 --- a/synapse/storage/prepare_database.py +++ b/synapse/storage/prepare_database.py @@ -25,7 +25,7 @@ logger = logging.getLogger(__name__) # Remember to update this number every time a change is made to database # schema files, so the users will be informed on server restarts. -SCHEMA_VERSION = 25 +SCHEMA_VERSION = 26 dir_path = os.path.abspath(os.path.dirname(__file__)) diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py index ae1ad56d9a..183855ba40 100644 --- a/synapse/storage/roommember.py +++ b/synapse/storage/roommember.py @@ -269,3 +269,39 @@ class RoomMemberStore(SQLBaseStore): ret = len(room_id_lists.pop(0).intersection(*room_id_lists)) > 0 defer.returnValue(ret) + + def forget(self, user_id, room_id): + def f(txn): + sql = ( + "UPDATE" + " room_memberships" + " SET" + " forgotten = 1" + " WHERE" + " user_id = ?" + " AND" + " room_id = ?" + ) + txn.execute(sql, (user_id, room_id)) + self.runInteraction("forget_membership", f) + + @defer.inlineCallbacks + def did_forget(self, user_id, room_id): + def f(txn): + sql = ( + "SELECT" + " COUNT(*)" + "FROM" + " room_memberships" + " WHERE" + " user_id = ?" + " AND" + " room_id = ?" + " AND" + " forgotten = 1" + ) + txn.execute(sql, (user_id, room_id)) + rows = txn.fetchall() + return rows[0][0] + count = yield self.runInteraction("did_forget_membership", f) + defer.returnValue(count > 0) diff --git a/synapse/storage/schema/delta/26/forgotten_memberships.sql b/synapse/storage/schema/delta/26/forgotten_memberships.sql new file mode 100644 index 0000000000..df55b9c6f6 --- /dev/null +++ b/synapse/storage/schema/delta/26/forgotten_memberships.sql @@ -0,0 +1,24 @@ +/* Copyright 2015 OpenMarket 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. + */ + +/* + * Keeps track of what rooms users have left and don't want to be able to + * access again. + * + * If all users on this server have left a room, we can delete the room + * entirely. + */ + + ALTER TABLE room_memberships ADD COLUMN forgotten INTEGER(1) DEFAULT 0; -- cgit 1.4.1 From bed7889703371dca893893d33f67e59e99cda111 Mon Sep 17 00:00:00 2001 From: Daniel Wagner-Hall Date: Wed, 18 Nov 2015 18:08:22 -0500 Subject: Apply forgetting properly to historical events --- synapse/handlers/_base.py | 10 +++++++++- synapse/storage/roommember.py | 34 ++++++++++++++++++++++++++++++++-- 2 files changed, 41 insertions(+), 3 deletions(-) diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py index 6519f183df..95bb06395a 100644 --- a/synapse/handlers/_base.py +++ b/synapse/handlers/_base.py @@ -92,7 +92,15 @@ class BaseHandler(object): membership_event = state.get((EventTypes.Member, user_id), None) if membership_event: - membership = membership_event.membership + was_forgotten_at_event = yield self.store.was_forgotten_at( + membership_event.user_id, + membership_event.room_id, + membership_event.event_id + ) + if was_forgotten_at_event: + membership = None + else: + membership = membership_event.membership else: membership = None diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py index 183855ba40..5e92cdc811 100644 --- a/synapse/storage/roommember.py +++ b/synapse/storage/roommember.py @@ -271,6 +271,7 @@ class RoomMemberStore(SQLBaseStore): defer.returnValue(ret) def forget(self, user_id, room_id): + """Indicate that user_id wishes to discard history for room_id.""" def f(txn): sql = ( "UPDATE" @@ -287,6 +288,9 @@ class RoomMemberStore(SQLBaseStore): @defer.inlineCallbacks def did_forget(self, user_id, room_id): + """Returns whether user_id has elected to discard history for room_id. + + Returns False if they have since re-joined.""" def f(txn): sql = ( "SELECT" @@ -298,10 +302,36 @@ class RoomMemberStore(SQLBaseStore): " AND" " room_id = ?" " AND" - " forgotten = 1" + " forgotten = 0" ) txn.execute(sql, (user_id, room_id)) rows = txn.fetchall() return rows[0][0] count = yield self.runInteraction("did_forget_membership", f) - defer.returnValue(count > 0) + defer.returnValue(count == 0) + + @defer.inlineCallbacks + def was_forgotten_at(self, user_id, room_id, event_id): + """Returns whether user_id has elected to discard history for room_id at event_id. + + event_id must be a membership event.""" + def f(txn): + sql = ( + "SELECT" + " COUNT(*)" + "FROM" + " room_memberships" + " WHERE" + " user_id = ?" + " AND" + " room_id = ?" + " AND" + " event_id = ?" + " AND" + " forgotten = 1" + ) + txn.execute(sql, (user_id, room_id, event_id)) + rows = txn.fetchall() + return rows[0][0] + count = yield self.runInteraction("did_forget_membership_at", f) + defer.returnValue(count == 1) -- cgit 1.4.1 From 9da4c5340da7e5a8e03a3bd7e028a1c862ce9616 Mon Sep 17 00:00:00 2001 From: Daniel Wagner-Hall Date: Thu, 19 Nov 2015 10:07:21 -0500 Subject: Simplify code --- synapse/handlers/_base.py | 2 +- synapse/storage/roommember.py | 12 +++++------- 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py index 95bb06395a..5fd20285d2 100644 --- a/synapse/handlers/_base.py +++ b/synapse/handlers/_base.py @@ -93,7 +93,7 @@ class BaseHandler(object): membership_event = state.get((EventTypes.Member, user_id), None) if membership_event: was_forgotten_at_event = yield self.store.was_forgotten_at( - membership_event.user_id, + membership_event.state_key, membership_event.room_id, membership_event.event_id ) diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py index 5e92cdc811..c3e11b91da 100644 --- a/synapse/storage/roommember.py +++ b/synapse/storage/roommember.py @@ -295,7 +295,7 @@ class RoomMemberStore(SQLBaseStore): sql = ( "SELECT" " COUNT(*)" - "FROM" + " FROM" " room_memberships" " WHERE" " user_id = ?" @@ -318,8 +318,8 @@ class RoomMemberStore(SQLBaseStore): def f(txn): sql = ( "SELECT" - " COUNT(*)" - "FROM" + " forgotten" + " FROM" " room_memberships" " WHERE" " user_id = ?" @@ -327,11 +327,9 @@ class RoomMemberStore(SQLBaseStore): " room_id = ?" " AND" " event_id = ?" - " AND" - " forgotten = 1" ) txn.execute(sql, (user_id, room_id, event_id)) rows = txn.fetchall() return rows[0][0] - count = yield self.runInteraction("did_forget_membership_at", f) - defer.returnValue(count == 1) + forgot = yield self.runInteraction("did_forget_membership_at", f) + defer.returnValue(forgot == 1) -- cgit 1.4.1 From df6824a00843b8eb944b1fe119f2ce84ea3525d9 Mon Sep 17 00:00:00 2001 From: Daniel Wagner-Hall Date: Thu, 19 Nov 2015 14:54:47 -0500 Subject: Ignore forgotten rooms in v2 sync --- synapse/storage/roommember.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py index c3e11b91da..d32ce1ab1e 100644 --- a/synapse/storage/roommember.py +++ b/synapse/storage/roommember.py @@ -160,7 +160,7 @@ class RoomMemberStore(SQLBaseStore): def _get_rooms_for_user_where_membership_is_txn(self, txn, user_id, membership_list): - where_clause = "user_id = ? AND (%s)" % ( + where_clause = "user_id = ? AND (%s) AND NOT forgotten" % ( " OR ".join(["membership = ?" for _ in membership_list]), ) -- cgit 1.4.1