diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/api/auth.py | 8 | ||||
| -rw-r--r-- | synapse/config/server.py | 10 | ||||
| -rw-r--r-- | synapse/handlers/federation.py | 3 | ||||
| -rw-r--r-- | synapse/handlers/room_member.py | 22 |
4 files changed, 43 insertions, 0 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py index e3da45b416..72858cca1f 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -519,6 +519,14 @@ class Auth(object): ) def is_server_admin(self, user): + """ Check if the given user is a local server admin. + + Args: + user (str): mxid of user to check + + Returns: + bool: True if the user is an admin + """ return self.store.is_server_admin(user) @defer.inlineCallbacks diff --git a/synapse/config/server.py b/synapse/config/server.py index 89d61a0503..c9a1715f1f 100644 --- a/synapse/config/server.py +++ b/synapse/config/server.py @@ -43,6 +43,12 @@ class ServerConfig(Config): self.filter_timeline_limit = config.get("filter_timeline_limit", -1) + # Whether we should block invites sent to users on this server + # (other than those sent by local server admins) + self.block_non_admin_invites = config.get( + "block_non_admin_invites", False, + ) + if self.public_baseurl is not None: if self.public_baseurl[-1] != '/': self.public_baseurl += '/' @@ -194,6 +200,10 @@ class ServerConfig(Config): # and sync operations. The default value is -1, means no upper limit. # filter_timeline_limit: 5000 + # Whether room invites to users on this server should be blocked + # (except those sent by local server admins). The default is False. + # block_non_admin_invites: True + # List of ports that Synapse should listen on, their purpose and their # configuration. listeners: diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index 2637f41dcd..18f87cad67 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -1074,6 +1074,9 @@ class FederationHandler(BaseHandler): if is_blocked: raise SynapseError(403, "This room has been blocked on this server") + if self.hs.config.block_non_admin_invites: + raise SynapseError(403, "This server does not accept room invites") + membership = event.content.get("membership") if event.type != EventTypes.Member or membership != Membership.INVITE: raise SynapseError(400, "The event was not an m.room.member invite event") diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index b3f979b246..9a498c2d3e 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -191,6 +191,8 @@ class RoomMemberHandler(BaseHandler): if action in ["kick", "unban"]: effective_membership_state = "leave" + # if this is a join with a 3pid signature, we may need to turn a 3pid + # invite into a normal invite before we can handle the join. if third_party_signed is not None: replication = self.hs.get_replication_layer() yield replication.exchange_third_party_invite( @@ -208,6 +210,16 @@ class RoomMemberHandler(BaseHandler): if is_blocked: raise SynapseError(403, "This room has been blocked on this server") + if (effective_membership_state == "invite" and + self.hs.config.block_non_admin_invites): + is_requester_admin = yield self.auth.is_server_admin( + requester.user, + ) + if not is_requester_admin: + raise SynapseError( + 403, "Invites have been disabled on this server", + ) + latest_event_ids = yield self.store.get_latest_event_ids_in_room(room_id) current_state_ids = yield self.state_handler.get_current_state_ids( room_id, latest_event_ids=latest_event_ids, @@ -471,6 +483,16 @@ class RoomMemberHandler(BaseHandler): requester, txn_id ): + if self.hs.config.block_non_admin_invites: + is_requester_admin = yield self.auth.is_server_admin( + requester.user, + ) + if not is_requester_admin: + raise SynapseError( + 403, "Invites have been disabled on this server", + Codes.FORBIDDEN, + ) + invitee = yield self._lookup_3pid( id_server, medium, address ) |