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-rw-r--r--synapse/api/filtering.py75
-rw-r--r--synapse/handlers/sync.py145
-rw-r--r--synapse/rest/client/v2_alpha/sync.py10
3 files changed, 150 insertions, 80 deletions
diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py
index bc03d6c287..8c8c7b642e 100644
--- a/synapse/api/filtering.py
+++ b/synapse/api/filtering.py
@@ -62,10 +62,24 @@ class Filtering(object):
                 self._check_definition(user_filter_json[key])
 
         if "room" in user_filter_json:
+            self._check_definition_room_lists(user_filter_json["room"])
             for key in room_level_definitions:
                 if key in user_filter_json["room"]:
                     self._check_definition(user_filter_json["room"][key])
 
+    def _check_definition_room_lists(self, definition):
+        """Check that "rooms" and "not_rooms" are lists of room ids if they
+        are present
+        """
+        # check rooms are valid room IDs
+        room_id_keys = ["rooms", "not_rooms"]
+        for key in room_id_keys:
+            if key in definition:
+                if type(definition[key]) != list:
+                    raise SynapseError(400, "Expected %s to be a list." % key)
+                for room_id in definition[key]:
+                    RoomID.from_string(room_id)
+
     def _check_definition(self, definition):
         """Check if the provided definition is valid.
 
@@ -85,14 +99,7 @@ class Filtering(object):
                 400, "Expected JSON object, not %s" % (definition,)
             )
 
-        # check rooms are valid room IDs
-        room_id_keys = ["rooms", "not_rooms"]
-        for key in room_id_keys:
-            if key in definition:
-                if type(definition[key]) != list:
-                    raise SynapseError(400, "Expected %s to be a list." % key)
-                for room_id in definition[key]:
-                    RoomID.from_string(room_id)
+        self._check_definition_room_lists(definition)
 
         # check senders are valid user IDs
         user_id_keys = ["senders", "not_senders"]
@@ -119,34 +126,27 @@ class FilterCollection(object):
     def __init__(self, filter_json):
         self.filter_json = filter_json
 
-        self.room_timeline_filter = Filter(
-            self.filter_json.get("room", {}).get("timeline", {})
-        )
-
-        self.room_state_filter = Filter(
-            self.filter_json.get("room", {}).get("state", {})
-        )
+        room_filter_json = self.filter_json.get("room", {})
 
-        self.room_ephemeral_filter = Filter(
-            self.filter_json.get("room", {}).get("ephemeral", {})
-        )
+        self.room_filter = Filter({
+            k: v for k, v in room_filter_json.items()
+            if k in ("rooms", "not_rooms")
+        })
 
-        self.room_account_data = Filter(
-            self.filter_json.get("room", {}).get("account_data", {})
-        )
-
-        self.presence_filter = Filter(
-            self.filter_json.get("presence", {})
-        )
-
-        self.account_data = Filter(
-            self.filter_json.get("account_data", {})
-        )
+        self.room_timeline_filter = Filter(room_filter_json.get("timeline", {}))
+        self.room_state_filter = Filter(room_filter_json.get("state", {}))
+        self.room_ephemeral_filter = Filter(room_filter_json.get("ephemeral", {}))
+        self.room_account_data = Filter(room_filter_json.get("account_data", {}))
+        self.presence_filter = Filter(self.filter_json.get("presence", {}))
+        self.account_data = Filter(self.filter_json.get("account_data", {}))
 
         self.include_leave = self.filter_json.get("room", {}).get(
             "include_leave", False
         )
 
+    def list_rooms(self):
+        return self.room_filter.list_rooms()
+
     def timeline_limit(self):
         return self.room_timeline_filter.limit()
 
@@ -163,22 +163,31 @@ class FilterCollection(object):
         return self.account_data.filter(events)
 
     def filter_room_state(self, events):
-        return self.room_state_filter.filter(events)
+        return self.room_state_filter.filter(self.room_filter.filter(events))
 
     def filter_room_timeline(self, events):
-        return self.room_timeline_filter.filter(events)
+        return self.room_timeline_filter.filter(self.room_filter.filter(events))
 
     def filter_room_ephemeral(self, events):
-        return self.room_ephemeral_filter.filter(events)
+        return self.room_ephemeral_filter.filter(self.room_filter.filter(events))
 
     def filter_room_account_data(self, events):
-        return self.room_account_data.filter(events)
+        return self.room_account_data.filter(self.room_filter.filter(events))
 
 
 class Filter(object):
     def __init__(self, filter_json):
         self.filter_json = filter_json
 
+    def list_rooms(self):
+        """The list of room_id strings this filter restricts the output to
+        or None if the this filter doesn't list the room ids.
+        """
+        if "rooms" in self.filter_json:
+            return list(set(self.filter_json["rooms"]))
+        else:
+            return None
+
     def check(self, event):
         """Checks whether the filter matches the given event.
 
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 7088c20cb4..9c8ea2bbb2 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -15,8 +15,8 @@
 
 from ._base import BaseHandler
 
-from synapse.streams.config import PaginationConfig
 from synapse.api.constants import Membership, EventTypes
+from synapse.api.errors import AuthError
 from synapse.util import unwrapFirstError
 
 from twisted.internet import defer
@@ -29,6 +29,7 @@ logger = logging.getLogger(__name__)
 
 SyncConfig = collections.namedtuple("SyncConfig", [
     "user",
+    "is_guest",
     "filter",
 ])
 
@@ -117,6 +118,8 @@ class SyncResult(collections.namedtuple("SyncResult", [
             self.presence or self.joined or self.invited
         )
 
+GuestRoom = collections.namedtuple("GuestRoom", ("room_id", "membership"))
+
 
 class SyncHandler(BaseHandler):
 
@@ -135,6 +138,12 @@ class SyncHandler(BaseHandler):
             A Deferred SyncResult.
         """
 
+        if sync_config.is_guest:
+            for room_id in sync_config.filter.list_rooms():
+                world_readable = yield self._is_world_readable(room_id)
+                if not world_readable:
+                    raise AuthError(403, "Guest access not allowed")
+
         if timeout == 0 or since_token is None or full_state:
             # we are going to return immediately, so don't bother calling
             # notifier.wait_for_events.
@@ -151,6 +160,17 @@ class SyncHandler(BaseHandler):
             )
             defer.returnValue(result)
 
+    @defer.inlineCallbacks
+    def _is_world_readable(self, room_id):
+        state = yield self.hs.get_state_handler().get_current_state(
+            room_id,
+            EventTypes.RoomHistoryVisibility
+        )
+        if state and "history_visibility" in state.content:
+            defer.returnValue(state.content["history_visibility"] == "world_readable")
+        else:
+            defer.returnValue(False)
+
     def current_sync_for_user(self, sync_config, since_token=None,
                               full_state=False):
         """Get the sync for client needed to match what the server has now.
@@ -174,37 +194,54 @@ class SyncHandler(BaseHandler):
         """
         now_token = yield self.event_sources.get_current_token()
 
-        now_token, ephemeral_by_room = yield self.ephemeral_by_room(
-            sync_config, now_token
-        )
+        if sync_config.is_guest:
+            room_list = []
+            for room_id in sync_config.filter.list_rooms():
+                room_list.append(GuestRoom(room_id, Membership.JOIN))
 
-        presence_stream = self.event_sources.sources["presence"]
-        # TODO (mjark): This looks wrong, shouldn't we be getting the presence
-        # UP to the present rather than after the present?
-        pagination_config = PaginationConfig(from_token=now_token)
-        presence, _ = yield presence_stream.get_pagination_rows(
-            user=sync_config.user,
-            pagination_config=pagination_config.get_source_config("presence"),
-            key=None
-        )
+            account_data = {}
+            account_data_by_room = {}
+            tags_by_room = {}
 
-        membership_list = (Membership.INVITE, Membership.JOIN)
-        if sync_config.filter.include_leave:
-            membership_list += (Membership.LEAVE, Membership.BAN)
+            # TODO: Hook up read receipts
+            ephemeral_by_room = {}
 
-        room_list = yield self.store.get_rooms_for_user_where_membership_is(
-            user_id=sync_config.user.to_string(),
-            membership_list=membership_list
-        )
+        else:
+            now_token, ephemeral_by_room = yield self.ephemeral_by_room(
+                sync_config, now_token
+            )
+
+            membership_list = (Membership.INVITE, Membership.JOIN)
+            if sync_config.filter.include_leave:
+                membership_list += (Membership.LEAVE, Membership.BAN)
 
-        account_data, account_data_by_room = (
-            yield self.store.get_account_data_for_user(
+            room_list = yield self.store.get_rooms_for_user_where_membership_is(
+                user_id=sync_config.user.to_string(),
+                membership_list=membership_list
+            )
+
+            account_data, account_data_by_room = (
+                yield self.store.get_account_data_for_user(
+                    sync_config.user.to_string()
+                )
+            )
+
+            tags_by_room = yield self.store.get_tags_for_user(
                 sync_config.user.to_string()
             )
-        )
 
-        tags_by_room = yield self.store.get_tags_for_user(
-            sync_config.user.to_string()
+        presence_stream = self.event_sources.sources["presence"]
+
+        joined_room_ids = [
+            room.room_id for room in room_list
+            if room.membership == Membership.JOIN
+        ]
+
+        presence, _ = yield presence_stream.get_new_events(
+            from_key=0,
+            user=sync_config.user,
+            room_ids=joined_room_ids,
+            is_guest=sync_config.is_guest,
         )
 
         joined = []
@@ -410,8 +447,36 @@ class SyncHandler(BaseHandler):
         """
         now_token = yield self.event_sources.get_current_token()
 
-        rooms = yield self.store.get_rooms_for_user(sync_config.user.to_string())
-        room_ids = [room.room_id for room in rooms]
+        if sync_config.is_guest:
+            room_ids = sync_config.filter.list_rooms()
+
+            ephemeral_by_room = {}
+
+            tags_by_room = {}
+            account_data = {}
+            account_data_by_room = {}
+
+        else:
+            rooms = yield self.store.get_rooms_for_user(
+                sync_config.user.to_string()
+            )
+            room_ids = [room.room_id for room in rooms]
+
+            now_token, ephemeral_by_room = yield self.ephemeral_by_room(
+                sync_config, now_token, since_token
+            )
+
+            tags_by_room = yield self.store.get_updated_tags(
+                sync_config.user.to_string(),
+                since_token.account_data_key,
+            )
+
+            account_data, account_data_by_room = (
+                yield self.store.get_updated_account_data_for_user(
+                    sync_config.user.to_string(),
+                    since_token.account_data_key,
+                )
+            )
 
         presence_source = self.event_sources.sources["presence"]
         presence, presence_key = yield presence_source.get_new_events(
@@ -419,15 +484,10 @@ class SyncHandler(BaseHandler):
             from_key=since_token.presence_key,
             limit=sync_config.filter.presence_limit(),
             room_ids=room_ids,
-            # /sync doesn't support guest access, they can't get to this point in code
-            is_guest=False,
+            is_guest=sync_config.is_guest,
         )
         now_token = now_token.copy_and_replace("presence_key", presence_key)
 
-        now_token, ephemeral_by_room = yield self.ephemeral_by_room(
-            sync_config, now_token, since_token
-        )
-
         rm_handler = self.hs.get_handlers().room_member_handler
         app_service = yield self.store.get_app_service_by_user_id(
             sync_config.user.to_string()
@@ -447,18 +507,8 @@ class SyncHandler(BaseHandler):
             from_key=since_token.room_key,
             to_key=now_token.room_key,
             limit=timeline_limit + 1,
-        )
-
-        tags_by_room = yield self.store.get_updated_tags(
-            sync_config.user.to_string(),
-            since_token.account_data_key,
-        )
-
-        account_data, account_data_by_room = (
-            yield self.store.get_updated_account_data_for_user(
-                sync_config.user.to_string(),
-                since_token.account_data_key,
-            )
+            room_ids=room_ids if sync_config.is_guest else (),
+            is_guest=sync_config.is_guest,
         )
 
         joined = []
@@ -590,7 +640,10 @@ class SyncHandler(BaseHandler):
             end_key = "s" + room_key.split('-')[-1]
             loaded_recents = sync_config.filter.filter_room_timeline(events)
             loaded_recents = yield self._filter_events_for_client(
-                sync_config.user.to_string(), loaded_recents,
+                sync_config.user.to_string(),
+                loaded_recents,
+                is_guest=sync_config.is_guest,
+                require_all_visible_for_guests=False
             )
             loaded_recents.extend(recents)
             recents = loaded_recents
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index 697df03dda..35a70ffad1 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -85,7 +85,9 @@ class SyncRestServlet(RestServlet):
 
     @defer.inlineCallbacks
     def on_GET(self, request):
-        user, token_id, _ = yield self.auth.get_user_by_req(request)
+        user, token_id, is_guest = yield self.auth.get_user_by_req(
+            request, allow_guest=True
+        )
 
         timeout = parse_integer(request, "timeout", default=0)
         since = parse_string(request, "since")
@@ -118,8 +120,14 @@ class SyncRestServlet(RestServlet):
             except:
                 filter = FilterCollection({})
 
+        if is_guest and filter.list_rooms() is None:
+            raise SynapseError(
+                400, "Guest users must provide a list of rooms in the filter"
+            )
+
         sync_config = SyncConfig(
             user=user,
+            is_guest=is_guest,
             filter=filter,
         )