diff options
Diffstat (limited to 'synapse/handlers/room.py')
| -rw-r--r-- | synapse/handlers/room.py | 425 |
1 files changed, 326 insertions, 99 deletions
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index c5d1001b50..3f04752581 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -22,26 +22,38 @@ from synapse.types import UserID, RoomAlias, RoomID from synapse.api.constants import ( EventTypes, Membership, JoinRules, RoomCreationPreset, ) -from synapse.api.errors import StoreError, SynapseError +from synapse.api.errors import AuthError, StoreError, SynapseError from synapse.util import stringutils, unwrapFirstError from synapse.util.async import run_on_reactor -from synapse.events.utils import serialize_event + +from signedjson.sign import verify_signed_json +from signedjson.key import decode_verify_key_bytes from collections import OrderedDict +from unpaddedbase64 import decode_base64 + import logging +import math import string logger = logging.getLogger(__name__) +id_server_scheme = "https://" + class RoomCreationHandler(BaseHandler): PRESETS_DICT = { RoomCreationPreset.PRIVATE_CHAT: { "join_rules": JoinRules.INVITE, - "history_visibility": "invited", + "history_visibility": "shared", "original_invitees_have_ops": False, }, + RoomCreationPreset.TRUSTED_PRIVATE_CHAT: { + "join_rules": JoinRules.INVITE, + "history_visibility": "shared", + "original_invitees_have_ops": True, + }, RoomCreationPreset.PUBLIC_CHAT: { "join_rules": JoinRules.PUBLIC, "history_visibility": "shared", @@ -150,12 +162,16 @@ class RoomCreationHandler(BaseHandler): for val in raw_initial_state: initial_state[(val["type"], val.get("state_key", ""))] = val["content"] + creation_content = config.get("creation_content", {}) + user = UserID.from_string(user_id) creation_events = self._create_events_for_new_room( user, room_id, preset_config=preset_config, invite_list=invite_list, initial_state=initial_state, + creation_content=creation_content, + room_alias=room_alias, ) msg_handler = self.hs.get_handlers().message_handler @@ -203,7 +219,8 @@ class RoomCreationHandler(BaseHandler): defer.returnValue(result) def _create_events_for_new_room(self, creator, room_id, preset_config, - invite_list, initial_state): + invite_list, initial_state, creation_content, + room_alias): config = RoomCreationHandler.PRESETS_DICT[preset_config] creator_id = creator.to_string() @@ -225,9 +242,10 @@ class RoomCreationHandler(BaseHandler): return e + creation_content.update({"creator": creator.to_string()}) creation_event = create( etype=EventTypes.Create, - content={"creator": creator.to_string()}, + content=creation_content, ) join_event = create( @@ -272,6 +290,14 @@ class RoomCreationHandler(BaseHandler): returned_events.append(power_levels_event) + if room_alias and (EventTypes.CanonicalAlias, '') not in initial_state: + room_alias_event = create( + etype=EventTypes.CanonicalAlias, + content={"alias": room_alias.to_string()}, + ) + + returned_events.append(room_alias_event) + if (EventTypes.JoinRules, '') not in initial_state: join_rules_event = create( etype=EventTypes.JoinRules, @@ -343,42 +369,7 @@ class RoomMemberHandler(BaseHandler): remotedomains.add(member.domain) @defer.inlineCallbacks - def get_room_members_as_pagination_chunk(self, room_id=None, user_id=None, - limit=0, start_tok=None, - end_tok=None): - """Retrieve a list of room members in the room. - - Args: - room_id (str): The room to get the member list for. - user_id (str): The ID of the user making the request. - limit (int): The max number of members to return. - start_tok (str): Optional. The start token if known. - end_tok (str): Optional. The end token if known. - Returns: - dict: A Pagination streamable dict. - Raises: - SynapseError if something goes wrong. - """ - yield self.auth.check_joined_room(room_id, user_id) - - member_list = yield self.store.get_room_members(room_id=room_id) - time_now = self.clock.time_msec() - event_list = [ - serialize_event(entry, time_now) - for entry in member_list - ] - chunk_data = { - "start": "START", # FIXME (erikj): START is no longer valid - "end": "END", - "chunk": event_list - } - # TODO honor Pagination stream params - # TODO snapshot this list to return on subsequent requests when - # paginating - defer.returnValue(chunk_data) - - @defer.inlineCallbacks - def change_membership(self, event, context, do_auth=True): + def change_membership(self, event, context, do_auth=True, is_guest=False): """ Change the membership status of a user in a room. Args: @@ -399,9 +390,38 @@ class RoomMemberHandler(BaseHandler): # if this HS is not currently in the room, i.e. we have to do the # invite/join dance. if event.membership == Membership.JOIN: + if is_guest: + guest_access = context.current_state.get( + (EventTypes.GuestAccess, ""), + None + ) + is_guest_access_allowed = ( + guest_access + and guest_access.content + and "guest_access" in guest_access.content + and guest_access.content["guest_access"] == "can_join" + ) + if not is_guest_access_allowed: + raise AuthError(403, "Guest access not allowed") + yield self._do_join(event, context, do_auth=do_auth) else: - # This is not a JOIN, so we can handle it normally. + if event.membership == Membership.LEAVE: + is_host_in_room = yield self.is_host_in_room(room_id, context) + if not is_host_in_room: + # Rejecting an invite, rather than leaving a joined room + handler = self.hs.get_handlers().federation_handler + inviter = yield self.get_inviter(event) + if not inviter: + # return the same error as join_room_alias does + raise SynapseError(404, "No known servers") + yield handler.do_remotely_reject_invite( + [inviter.domain], + room_id, + event.user_id + ) + defer.returnValue({"room_id": room_id}) + return # FIXME: This isn't idempotency. if prev_state and prev_state.membership == event.membership: @@ -425,7 +445,7 @@ class RoomMemberHandler(BaseHandler): defer.returnValue({"room_id": room_id}) @defer.inlineCallbacks - def join_room_alias(self, joinee, room_alias, do_auth=True, content={}): + def join_room_alias(self, joinee, room_alias, content={}): directory_handler = self.hs.get_handlers().directory_handler mapping = yield directory_handler.get_association(room_alias) @@ -459,8 +479,6 @@ class RoomMemberHandler(BaseHandler): @defer.inlineCallbacks def _do_join(self, event, context, room_hosts=None, do_auth=True): - joinee = UserID.from_string(event.state_key) - # room_id = RoomID.from_string(event.room_id, self.hs) room_id = event.room_id # XXX: We don't do an auth check if we are doing an invite @@ -468,41 +486,18 @@ class RoomMemberHandler(BaseHandler): # that we are allowed to join when we decide whether or not we # need to do the invite/join dance. - is_host_in_room = yield self.auth.check_host_in_room( - event.room_id, - self.hs.hostname - ) - if not is_host_in_room: - # is *anyone* in the room? - room_member_keys = [ - v for (k, v) in context.current_state.keys() if ( - k == "m.room.member" - ) - ] - if len(room_member_keys) == 0: - # has the room been created so we can join it? - create_event = context.current_state.get(("m.room.create", "")) - if create_event: - is_host_in_room = True - + is_host_in_room = yield self.is_host_in_room(room_id, context) if is_host_in_room: should_do_dance = False elif room_hosts: # TODO: Shouldn't this be remote_room_host? should_do_dance = True else: - # TODO(markjh): get prev_state from snapshot - prev_state = yield self.store.get_room_member( - joinee.to_string(), room_id - ) - - if prev_state and prev_state.membership == Membership.INVITE: - inviter = UserID.from_string(prev_state.user_id) - - should_do_dance = not self.hs.is_mine(inviter) - room_hosts = [inviter.domain] - else: + inviter = yield self.get_inviter(event) + if not inviter: # return the same error as join_room_alias does raise SynapseError(404, "No known servers") + should_do_dance = not self.hs.is_mine(inviter) + room_hosts = [inviter.domain] if should_do_dance: handler = self.hs.get_handlers().federation_handler @@ -510,8 +505,7 @@ class RoomMemberHandler(BaseHandler): room_hosts, room_id, event.user_id, - event.content, # FIXME To get a non-frozen dict - context + event.content, ) else: logger.debug("Doing normal join") @@ -529,30 +523,42 @@ class RoomMemberHandler(BaseHandler): ) @defer.inlineCallbacks - def _should_invite_join(self, room_id, prev_state, do_auth): - logger.debug("_should_invite_join: room_id: %s", room_id) - - # XXX: We don't do an auth check if we are doing an invite - # join dance for now, since we're kinda implicitly checking - # that we are allowed to join when we decide whether or not we - # need to do the invite/join dance. + def get_inviter(self, event): + # TODO(markjh): get prev_state from snapshot + prev_state = yield self.store.get_room_member( + event.user_id, event.room_id + ) - # Only do an invite join dance if a) we were invited, - # b) the person inviting was from a differnt HS and c) we are - # not currently in the room - room_host = None if prev_state and prev_state.membership == Membership.INVITE: - room = yield self.store.get_room(room_id) - inviter = UserID.from_string( - prev_state.sender - ) - - is_remote_invite_join = not self.hs.is_mine(inviter) and not room - room_host = inviter.domain - else: - is_remote_invite_join = False + defer.returnValue(UserID.from_string(prev_state.user_id)) + return + elif "third_party_invite" in event.content: + if "sender" in event.content["third_party_invite"]: + inviter = UserID.from_string( + event.content["third_party_invite"]["sender"] + ) + defer.returnValue(inviter) + defer.returnValue(None) - defer.returnValue((is_remote_invite_join, room_host)) + @defer.inlineCallbacks + def is_host_in_room(self, room_id, context): + is_host_in_room = yield self.auth.check_host_in_room( + room_id, + self.hs.hostname + ) + if not is_host_in_room: + # is *anyone* in the room? + room_member_keys = [ + v for (k, v) in context.current_state.keys() if ( + k == "m.room.member" + ) + ] + if len(room_member_keys) == 0: + # has the room been created so we can join it? + create_event = context.current_state.get(("m.room.create", "")) + if create_event: + is_host_in_room = True + defer.returnValue(is_host_in_room) @defer.inlineCallbacks def get_joined_rooms_for_user(self, user): @@ -583,6 +589,160 @@ class RoomMemberHandler(BaseHandler): suppress_auth=(not do_auth), ) + @defer.inlineCallbacks + def do_3pid_invite( + self, + room_id, + inviter, + medium, + address, + id_server, + token_id, + txn_id + ): + invitee = yield self._lookup_3pid( + id_server, medium, address + ) + + if invitee: + # make sure it looks like a user ID; it'll throw if it's invalid. + UserID.from_string(invitee) + yield self.hs.get_handlers().message_handler.create_and_send_event( + { + "type": EventTypes.Member, + "content": { + "membership": unicode("invite") + }, + "room_id": room_id, + "sender": inviter.to_string(), + "state_key": invitee, + }, + token_id=token_id, + txn_id=txn_id, + ) + else: + yield self._make_and_store_3pid_invite( + id_server, + medium, + address, + room_id, + inviter, + token_id, + txn_id=txn_id + ) + + @defer.inlineCallbacks + def _lookup_3pid(self, id_server, medium, address): + """Looks up a 3pid in the passed identity server. + + Args: + id_server (str): The server name (including port, if required) + of the identity server to use. + medium (str): The type of the third party identifier (e.g. "email"). + address (str): The third party identifier (e.g. "foo@example.com"). + + Returns: + (str) the matrix ID of the 3pid, or None if it is not recognized. + """ + try: + data = yield self.hs.get_simple_http_client().get_json( + "%s%s/_matrix/identity/api/v1/lookup" % (id_server_scheme, id_server,), + { + "medium": medium, + "address": address, + } + ) + + if "mxid" in data: + if "signatures" not in data: + raise AuthError(401, "No signatures on 3pid binding") + self.verify_any_signature(data, id_server) + defer.returnValue(data["mxid"]) + + except IOError as e: + logger.warn("Error from identity server lookup: %s" % (e,)) + defer.returnValue(None) + + @defer.inlineCallbacks + def verify_any_signature(self, data, server_hostname): + if server_hostname not in data["signatures"]: + raise AuthError(401, "No signature from server %s" % (server_hostname,)) + for key_name, signature in data["signatures"][server_hostname].items(): + key_data = yield self.hs.get_simple_http_client().get_json( + "%s%s/_matrix/identity/api/v1/pubkey/%s" % + (id_server_scheme, server_hostname, key_name,), + ) + if "public_key" not in key_data: + raise AuthError(401, "No public key named %s from %s" % + (key_name, server_hostname,)) + verify_signed_json( + data, + server_hostname, + decode_verify_key_bytes(key_name, decode_base64(key_data["public_key"])) + ) + return + + @defer.inlineCallbacks + def _make_and_store_3pid_invite( + self, + id_server, + medium, + address, + room_id, + user, + token_id, + txn_id + ): + token, public_key, key_validity_url, display_name = ( + yield self._ask_id_server_for_third_party_invite( + id_server, + medium, + address, + room_id, + user.to_string() + ) + ) + msg_handler = self.hs.get_handlers().message_handler + yield msg_handler.create_and_send_event( + { + "type": EventTypes.ThirdPartyInvite, + "content": { + "display_name": display_name, + "key_validity_url": key_validity_url, + "public_key": public_key, + }, + "room_id": room_id, + "sender": user.to_string(), + "state_key": token, + }, + token_id=token_id, + txn_id=txn_id, + ) + + @defer.inlineCallbacks + def _ask_id_server_for_third_party_invite( + self, id_server, medium, address, room_id, sender): + is_url = "%s%s/_matrix/identity/api/v1/store-invite" % ( + id_server_scheme, id_server, + ) + data = yield self.hs.get_simple_http_client().post_urlencoded_get_json( + is_url, + { + "medium": medium, + "address": address, + "room_id": room_id, + "sender": sender, + } + ) + # TODO: Check for success + token = data["token"] + public_key = data["public_key"] + display_name = data["display_name"] + key_validity_url = "%s%s/_matrix/identity/api/v1/pubkey/isvalid" % ( + id_server_scheme, id_server, + ) + defer.returnValue((token, public_key, key_validity_url, display_name)) + class RoomListHandler(BaseHandler): @@ -604,12 +764,79 @@ class RoomListHandler(BaseHandler): defer.returnValue({"start": "START", "end": "END", "chunk": chunk}) +class RoomContextHandler(BaseHandler): + @defer.inlineCallbacks + def get_event_context(self, user, room_id, event_id, limit, is_guest): + """Retrieves events, pagination tokens and state around a given event + in a room. + + Args: + user (UserID) + room_id (str) + event_id (str) + limit (int): The maximum number of events to return in total + (excluding state). + + Returns: + dict + """ + before_limit = math.floor(limit/2.) + after_limit = limit - before_limit + + now_token = yield self.hs.get_event_sources().get_current_token() + + results = yield self.store.get_events_around( + room_id, event_id, before_limit, after_limit + ) + + results["events_before"] = yield self._filter_events_for_client( + user.to_string(), + results["events_before"], + is_guest=is_guest, + require_all_visible_for_guests=False + ) + + results["events_after"] = yield self._filter_events_for_client( + user.to_string(), + results["events_after"], + is_guest=is_guest, + require_all_visible_for_guests=False + ) + + if results["events_after"]: + last_event_id = results["events_after"][-1].event_id + else: + last_event_id = event_id + + state = yield self.store.get_state_for_events( + [last_event_id], None + ) + results["state"] = state[last_event_id].values() + + results["start"] = now_token.copy_and_replace( + "room_key", results["start"] + ).to_string() + + results["end"] = now_token.copy_and_replace( + "room_key", results["end"] + ).to_string() + + defer.returnValue(results) + + class RoomEventSource(object): def __init__(self, hs): self.store = hs.get_datastore() @defer.inlineCallbacks - def get_new_events_for_user(self, user, from_key, limit): + def get_new_events( + self, + user, + from_key, + limit, + room_ids, + is_guest, + ): # We just ignore the key for now. to_key = yield self.get_current_key() @@ -629,8 +856,9 @@ class RoomEventSource(object): user_id=user.to_string(), from_key=from_key, to_key=to_key, - room_id=None, limit=limit, + room_ids=room_ids, + is_guest=is_guest, ) defer.returnValue((events, end_key)) @@ -646,7 +874,6 @@ class RoomEventSource(object): to_key=config.to_key, direction=config.direction, limit=config.limit, - with_feedback=True ) defer.returnValue((events, next_key)) |