Merge branch 'master' of github.com:matrix-org/synapse into sql_refactor

Conflicts:
	synapse/storage/_base.py

35 files changed, 412 insertions, 188 deletions

diff --git a/README.rst b/README.rst
index 53a8ca5f51..8131172d8e 100644
--- a/README.rst
+++ b/README.rst
@@ -10,7 +10,7 @@ VoIP[1].  The basics you need to know to get up and running are:
     
     - Matrix user IDs look like ``@matthew:matrix.org`` (although in the future
       you will normally refer to yourself and others using a 3PID: email
-      address, phone number, etc rather than manipulating matrix user IDs)
+      address, phone number, etc rather than manipulating Matrix user IDs)
 
 The overall architecture is::
 
@@ -40,8 +40,8 @@ To get up and running:
 About Matrix
 ============
 
-Matrix specifies a set of pragmatic RESTful HTTP JSON APIs for VoIP and IM as an
-open standard, providing:
+Matrix specifies a set of pragmatic RESTful HTTP JSON APIs as an open standard,
+which handle:
 
     - Creating and managing fully distributed chat rooms with no
       single points of control or failure
@@ -147,7 +147,7 @@ Setting up Federation
 
 In order for other homeservers to send messages to your server, it will need to
 be publicly visible on the internet, and they will need to know its host name.
-You have two choices here, which will influence the form of your matrix user
+You have two choices here, which will influence the form of your Matrix user
 IDs:
 
  1) Use the machine's own hostname as available on public DNS in the form of its
@@ -231,14 +231,15 @@ synapse sandbox running on localhost)
 Logging In To An Existing Account
 ---------------------------------
 
-Just enter the ``@localpart:my.domain.here`` matrix user ID and password into the form and click the Login button.
+Just enter the ``@localpart:my.domain.here`` Matrix user ID and password into
+the form and click the Login button.
 
 
 Identity Servers
 ================
 
 The job of authenticating 3PIDs and tracking which 3PIDs are associated with a
-given matrix user is very security-sensitive, as there is obvious risk of spam
+given Matrix user is very security-sensitive, as there is obvious risk of spam
 if it is too easy to sign up for Matrix accounts or harvest 3PID data. Meanwhile
 the job of publishing the end-to-end encryption public keys for Matrix users is
 also very security-sensitive for similar reasons.
diff --git a/docs/python_architecture.rst b/docs/python_architecture.rst
index eca36a1902..8beaa615d0 100644
--- a/docs/python_architecture.rst
+++ b/docs/python_architecture.rst
@@ -24,7 +24,7 @@ Where the bottom (the transport layer) is what talks to the internet via HTTP, a
         * duplicate pdu_id's - i.e., it makes sure we ignore them. 
         * responding to requests for a given pdu_id
         * responding to requests for all metadata for a given context (i.e. room)
-        * handling incoming pagination requests
+        * handling incoming backfill requests
 
     So it has to parse incoming messages to discover which are metadata and which aren't, and has to correctly clobber existing metadata where appropriate.
 
diff --git a/docs/server-server/specification.rst b/docs/server-server/specification.rst
index a386bd3e7d..f3c571aa86 100644
--- a/docs/server-server/specification.rst
+++ b/docs/server-server/specification.rst
@@ -155,9 +155,9 @@ To fetch all the state of a given context:
   PDUs that encode the state.
 
 
-To paginate events on a given context:
+To backfill events on a given context:
 
-  GET .../paginate/:context/
+  GET .../backfill/:context/
     Query args: v, limit
 
     Response: JSON encoding of a single Transaction containing multiple PDUs
diff --git a/docs/terminology.rst b/docs/terminology.rst
index 575cc0c808..cc6e6760ac 100644
--- a/docs/terminology.rst
+++ b/docs/terminology.rst
@@ -11,6 +11,11 @@ medium-term goal we should encourage the unification of this terminology.
 Terms
 =====
 
+Backfilling:
+  The process of synchronising historic state from one home server to another,
+  to backfill the event storage so that scrollback can be presented to the
+  client(s).  (Formerly, and confusingly, called 'pagination')
+
 Context:
   A single human-level entity of interest (currently, a chat room)
 
@@ -28,11 +33,6 @@ Event:
   [[NOTE(paul): The current server-server implementation calls these simply
   "messages" but the term is too ambiguous here; I've called them Events]]
 
-Pagination:
-  The process of synchronising historic state from one home server to another,
-  to backfill the event storage so that scrollback can be presented to the
-  client(s).
-
 PDU (Persistent Data Unit):
   A message that relates to a single context, irrespective of the server that
   is communicating it. PDUs either encode a single Event, or a single State
diff --git a/docs/versioning.rst b/docs/versioning.rst
index 2f94bb6ef6..ffda60633f 100644
--- a/docs/versioning.rst
+++ b/docs/versioning.rst
@@ -1,11 +1,11 @@
-Versioning is, like, hard for paginating backwards because of the number of Home Servers involved.
+Versioning is, like, hard for backfilling backwards because of the number of Home Servers involved.
 
-The way we solve this is by doing versioning as an acyclic directed graph of PDUs. For pagination purposes, this is done on a per context basis. 
+The way we solve this is by doing versioning as an acyclic directed graph of PDUs. For backfilling purposes, this is done on a per context basis. 
 When we send a PDU we include all PDUs that have been received for that context that hasn't been subsequently listed in a later PDU. The trivial case is a simple list of PDUs, e.g. A <- B <- C. However, if two servers send out a PDU at the same to, both B and C would point at A - a later PDU would then list both B and C.
 
 Problems with opaque version strings:
     - How do you do clustering without mandating that a cluster can only have one transaction in flight to a given remote home server at a time. 
-      If you have multiple transactions sent at once, then you might drop one transaction, receive anotherwith a version that is later than the dropped transaction and which point ARGH WE LOST A TRANSACTION.
-    - How do you do pagination? A version string defines a point in a stream w.r.t. a single home server, not a point in the context.
+      If you have multiple transactions sent at once, then you might drop one transaction, receive another with a version that is later than the dropped transaction and which point ARGH WE LOST A TRANSACTION.
+    - How do you do backfilling? A version string defines a point in a stream w.r.t. a single home server, not a point in the context.
 
 We only need to store the ends of the directed graph, we DO NOT need to do the whole one table of nodes and one of edges.
diff --git a/experiments/test_messaging.py b/experiments/test_messaging.py
index f4ae71bfc4..3ff7ab820f 100644
--- a/experiments/test_messaging.py
+++ b/experiments/test_messaging.py
@@ -104,12 +104,12 @@ class InputOutput(object):
                 #self.print_line("OK.")
                 return
 
-            m = re.match("^paginate (\S+)$", line)
+            m = re.match("^backfill (\S+)$", line)
             if m:
-                # we want to paginate a room
+                # we want to backfill a room
                 room_name, = m.groups()
-                self.print_line("paginate %s" % room_name)
-                self.server.paginate(room_name)
+                self.print_line("backfill %s" % room_name)
+                self.server.backfill(room_name)
                 return
 
             self.print_line("Unrecognized command")
@@ -307,7 +307,7 @@ class HomeServer(ReplicationHandler):
         except Exception as e:
             logger.exception(e)
 
-    def paginate(self, room_name, limit=5):
+    def backfill(self, room_name, limit=5):
         room = self.joined_rooms.get(room_name)
 
         if not room:
@@ -315,7 +315,7 @@ class HomeServer(ReplicationHandler):
 
         dest = room.oldest_server
 
-        return self.replication_layer.paginate(dest, room_name, limit)
+        return self.replication_layer.backfill(dest, room_name, limit)
 
     def _get_room_remote_servers(self, room_name):
         return [i for i in self.joined_rooms.setdefault(room_name,).servers]
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index 84bc0398fd..8d2ba242e1 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -14,6 +14,7 @@
 # limitations under the License.
 
 """This module contains classes for authenticating the user."""
+
 from twisted.internet import defer
 
 from synapse.api.constants import Membership
diff --git a/synapse/federation/handler.py b/synapse/federation/handler.py
index d361f0aaf7..580e591aca 100644
--- a/synapse/federation/handler.py
+++ b/synapse/federation/handler.py
@@ -75,8 +75,8 @@ class FederationEventHandler(object):
     @log_function
     @defer.inlineCallbacks
     def backfill(self, room_id, limit):
-        # TODO: Work out which destinations to ask for pagination
-        # self.replication_layer.paginate(dest, room_id, limit)
+        # TODO: Work out which destinations to ask for backfill
+        # self.replication_layer.backfill(dest, room_id, limit)
         pass
 
     @log_function
diff --git a/synapse/federation/persistence.py b/synapse/federation/persistence.py
index 372245712a..e0e4de4e8c 100644
--- a/synapse/federation/persistence.py
+++ b/synapse/federation/persistence.py
@@ -114,14 +114,14 @@ class PduActions(object):
 
     @defer.inlineCallbacks
     @log_function
-    def paginate(self, context, pdu_list, limit):
+    def backfill(self, context, pdu_list, limit):
         """ For a given list of PDU id and origins return the proceeding
         `limit` `Pdu`s in the given `context`.
 
         Returns:
             Deferred: Results in a list of `Pdu`s.
         """
-        results = yield self.store.get_pagination(
+        results = yield self.store.get_backfill(
             context, pdu_list, limit
         )
 
@@ -131,7 +131,7 @@ class PduActions(object):
     def is_new(self, pdu):
         """ When we receive a `Pdu` from a remote home server, we want to
         figure out whether it is `new`, i.e. it is not some historic PDU that
-        we haven't seen simply because we haven't paginated back that far.
+        we haven't seen simply because we haven't backfilled back that far.
 
         Returns:
             Deferred: Results in a `bool`
diff --git a/synapse/federation/replication.py b/synapse/federation/replication.py
index 01020566cf..bc9df2f214 100644
--- a/synapse/federation/replication.py
+++ b/synapse/federation/replication.py
@@ -118,7 +118,7 @@ class ReplicationLayer(object):
         *Note:* The home server should always call `send_pdu` even if it knows
         that it does not need to be replicated to other home servers. This is
         in case e.g. someone else joins via a remote home server and then
-        paginates.
+        backfills.
 
         TODO: Figure out when we should actually resolve the deferred.
 
@@ -179,13 +179,13 @@ class ReplicationLayer(object):
 
     @defer.inlineCallbacks
     @log_function
-    def paginate(self, dest, context, limit):
+    def backfill(self, dest, context, limit):
         """Requests some more historic PDUs for the given context from the
         given destination server.
 
         Args:
             dest (str): The remote home server to ask.
-            context (str): The context to paginate back on.
+            context (str): The context to backfill.
             limit (int): The maximum number of PDUs to return.
 
         Returns:
@@ -193,16 +193,16 @@ class ReplicationLayer(object):
         """
         extremities = yield self.store.get_oldest_pdus_in_context(context)
 
-        logger.debug("paginate extrem=%s", extremities)
+        logger.debug("backfill extrem=%s", extremities)
 
         # If there are no extremeties then we've (probably) reached the start.
         if not extremities:
             return
 
-        transaction_data = yield self.transport_layer.paginate(
+        transaction_data = yield self.transport_layer.backfill(
             dest, context, extremities, limit)
 
-        logger.debug("paginate transaction_data=%s", repr(transaction_data))
+        logger.debug("backfill transaction_data=%s", repr(transaction_data))
 
         transaction = Transaction(**transaction_data)
 
@@ -281,9 +281,9 @@ class ReplicationLayer(object):
 
     @defer.inlineCallbacks
     @log_function
-    def on_paginate_request(self, context, versions, limit):
+    def on_backfill_request(self, context, versions, limit):
 
-        pdus = yield self.pdu_actions.paginate(context, versions, limit)
+        pdus = yield self.pdu_actions.backfill(context, versions, limit)
 
         defer.returnValue((200, self._transaction_from_pdus(pdus).get_dict()))
 
@@ -427,7 +427,7 @@ class ReplicationLayer(object):
         # Get missing pdus if necessary.
         is_new = yield self.pdu_actions.is_new(pdu)
         if is_new and not pdu.outlier:
-            # We only paginate backwards to the min depth.
+            # We only backfill backwards to the min depth.
             min_depth = yield self.store.get_min_depth_for_context(pdu.context)
 
             if min_depth and pdu.depth > min_depth:
diff --git a/synapse/federation/transport.py b/synapse/federation/transport.py
index 69166036fb..e09dfc2670 100644
--- a/synapse/federation/transport.py
+++ b/synapse/federation/transport.py
@@ -112,7 +112,7 @@ class TransportLayer(object):
         return self._do_request_for_transaction(destination, subpath)
 
     @log_function
-    def paginate(self, dest, context, pdu_tuples, limit):
+    def backfill(self, dest, context, pdu_tuples, limit):
         """ Requests `limit` previous PDUs in a given context before list of
         PDUs.
 
@@ -126,14 +126,14 @@ class TransportLayer(object):
             Deferred: Results in a dict received from the remote homeserver.
         """
         logger.debug(
-            "paginate dest=%s, context=%s, pdu_tuples=%s, limit=%s",
+            "backfill dest=%s, context=%s, pdu_tuples=%s, limit=%s",
             dest, context, repr(pdu_tuples), str(limit)
         )
 
         if not pdu_tuples:
             return
 
-        subpath = "/paginate/%s/" % context
+        subpath = "/backfill/%s/" % context
 
         args = {"v": ["%s,%s" % (i, o) for i, o in pdu_tuples]}
         args["limit"] = limit
@@ -251,8 +251,8 @@ class TransportLayer(object):
 
         self.server.register_path(
             "GET",
-            re.compile("^" + PREFIX + "/paginate/([^/]*)/$"),
-            lambda request, context: self._on_paginate_request(
+            re.compile("^" + PREFIX + "/backfill/([^/]*)/$"),
+            lambda request, context: self._on_backfill_request(
                 context, request.args["v"],
                 request.args["limit"]
             )
@@ -352,7 +352,7 @@ class TransportLayer(object):
         defer.returnValue(data)
 
     @log_function
-    def _on_paginate_request(self, context, v_list, limits):
+    def _on_backfill_request(self, context, v_list, limits):
         if not limits:
             return defer.succeed(
                 (400, {"error": "Did not include limit param"})
@@ -362,7 +362,7 @@ class TransportLayer(object):
 
         versions = [v.split(",", 1) for v in v_list]
 
-        return self.request_handler.on_paginate_request(
+        return self.request_handler.on_backfill_request(
             context, versions, limit)
 
 
@@ -371,14 +371,14 @@ class TransportReceivedHandler(object):
     """
     def on_incoming_transaction(self, transaction):
         """ Called on PUT /send/<transaction_id>, or on response to a request
-        that we sent (e.g. a pagination request)
+        that we sent (e.g. a backfill request)
 
         Args:
             transaction (synapse.transaction.Transaction): The transaction that
                 was sent to us.
 
         Returns:
-            twisted.internet.defer.Deferred: A deferred that get's fired when
+            twisted.internet.defer.Deferred: A deferred that gets fired when
             the transaction has finished being processed.
 
             The result should be a tuple in the form of
@@ -438,14 +438,14 @@ class TransportRequestHandler(object):
     def on_context_state_request(self, context):
         """ Called on GET /state/<context>/
 
-        Get's hit when someone wants all the *current* state for a given
+        Gets hit when someone wants all the *current* state for a given
         contexts.
 
         Args:
             context (str): The name of the context that we're interested in.
 
         Returns:
-            twisted.internet.defer.Deferred: A deferred that get's fired when
+            twisted.internet.defer.Deferred: A deferred that gets fired when
             the transaction has finished being processed.
 
             The result should be a tuple in the form of
@@ -457,20 +457,20 @@ class TransportRequestHandler(object):
         """
         pass
 
-    def on_paginate_request(self, context, versions, limit):
-        """ Called on GET /paginate/<context>/?v=...&limit=...
+    def on_backfill_request(self, context, versions, limit):
+        """ Called on GET /backfill/<context>/?v=...&limit=...
 
-        Get's hit when we want to paginate backwards on a given context from
+        Gets hit when we want to backfill backwards on a given context from
         the given point.
 
         Args:
-            context (str): The context to paginate on
-            versions (list): A list of 2-tuple's representing where to paginate
+            context (str): The context to backfill
+            versions (list): A list of 2-tuples representing where to backfill
                 from, in the form `(pdu_id, origin)`
             limit (int): How many pdus to return.
 
         Returns:
-            Deferred: Resultsin a tuple in the form of
+            Deferred: Results in a tuple in the form of
             `(response_code, respond_body)`, where `response_body` is a python
             dict that will get serialized to JSON.
 
diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py
index 3cc6348906..df98e39f69 100644
--- a/synapse/handlers/directory.py
+++ b/synapse/handlers/directory.py
@@ -35,9 +35,11 @@ class DirectoryHandler(BaseHandler):
 
     def __init__(self, hs):
         super(DirectoryHandler, self).__init__(hs)
-        self.hs = hs
-        self.http_client = hs.get_http_client()
-        self.clock = hs.get_clock()
+
+        self.federation = hs.get_replication_layer()
+        self.federation.register_query_handler(
+            "directory", self.on_directory_query
+        )
 
     @defer.inlineCallbacks
     def create_association(self, room_alias, room_id, servers):
@@ -58,9 +60,7 @@ class DirectoryHandler(BaseHandler):
         )
 
     @defer.inlineCallbacks
-    def get_association(self, room_alias, local_only=False):
-        # TODO(erikj): Do auth
-
+    def get_association(self, room_alias):
         room_id = None
         if room_alias.is_mine:
             result = yield self.store.get_association_from_room_alias(
@@ -70,22 +70,13 @@ class DirectoryHandler(BaseHandler):
             if result:
                 room_id = result.room_id
                 servers = result.servers
-        elif not local_only:
-            path = "%s/ds/room/%s?local_only=1" % (
-                PREFIX,
-                urllib.quote(room_alias.to_string())
+        else:
+            result = yield self.federation.make_query(
+                destination=room_alias.domain,
+                query_type="directory",
+                args={"room_alias": room_alias.to_string()},
             )
 
-            result = None
-            try:
-                result = yield self.http_client.get_json(
-                    destination=room_alias.domain,
-                    path=path,
-                )
-            except:
-                # TODO(erikj): Handle this better?
-                logger.exception("Failed to get remote room alias")
-
             if result and "room_id" in result and "servers" in result:
                 room_id = result["room_id"]
                 servers = result["servers"]
@@ -99,3 +90,20 @@ class DirectoryHandler(BaseHandler):
             "servers": servers,
         })
         return
+
+    @defer.inlineCallbacks
+    def on_directory_query(self, args):
+        room_alias = self.hs.parse_roomalias(args["room_alias"])
+        if not room_alias.is_mine:
+            raise SynapseError(
+                400, "Room Alias is not hosted on this Home Server"
+            )
+
+        result = yield self.store.get_association_from_room_alias(
+            room_alias
+        )
+
+        defer.returnValue({
+            "room_id": result.room_id,
+            "servers": result.servers,
+        })
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index 1c24efd454..8bdb0fe5c7 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -56,6 +56,8 @@ class PresenceHandler(BaseHandler):
 
         self.homeserver = hs
 
+        self.clock = hs.get_clock()
+
         distributor = hs.get_distributor()
         distributor.observe("registered_user", self.registered_user)
 
@@ -168,14 +170,15 @@ class PresenceHandler(BaseHandler):
                 state = yield self.store.get_presence_state(
                     target_user.localpart
                 )
-                defer.returnValue(state)
             else:
                 raise SynapseError(404, "Presence information not visible")
         else:
             # TODO(paul): Have remote server send us permissions set
-            defer.returnValue(
-                    self._get_or_offline_usercache(target_user).get_state()
-            )
+            state = self._get_or_offline_usercache(target_user).get_state()
+
+        if "mtime" in state:
+            state["mtime_age"] = self.clock.time_msec() - state.pop("mtime")
+        defer.returnValue(state)
 
     @defer.inlineCallbacks
     def set_state(self, target_user, auth_user, state):
@@ -209,6 +212,8 @@ class PresenceHandler(BaseHandler):
             ),
         ])
 
+        state["mtime"] = self.clock.time_msec()
+
         now_online = state["state"] != PresenceState.OFFLINE
         was_polling = target_user in self._user_cachemap
 
@@ -361,6 +366,8 @@ class PresenceHandler(BaseHandler):
             observed_user = self.hs.parse_userid(p.pop("observed_user_id"))
             p["observed_user"] = observed_user
             p.update(self._get_or_offline_usercache(observed_user).get_state())
+            if "mtime" in p:
+                p["mtime_age"] = self.clock.time_msec() - p.pop("mtime")
 
         defer.returnValue(presence)
 
@@ -546,10 +553,15 @@ class PresenceHandler(BaseHandler):
     def _push_presence_remote(self, user, destination, state=None):
         if state is None:
             state = yield self.store.get_presence_state(user.localpart)
+
             yield self.distributor.fire(
                 "collect_presencelike_data", user, state
             )
 
+        if "mtime" in state:
+            state = dict(state)
+            state["mtime_age"] = self.clock.time_msec() - state.pop("mtime")
+
         yield self.federation.send_edu(
             destination=destination,
             edu_type="m.presence",
@@ -585,6 +597,9 @@ class PresenceHandler(BaseHandler):
             state = dict(push)
             del state["user_id"]
 
+            if "mtime_age" in state:
+                state["mtime"] = self.clock.time_msec() - state.pop("mtime_age")
+
             statuscache = self._get_or_make_usercache(user)
 
             self._user_cachemap_latest_serial += 1
@@ -631,9 +646,14 @@ class PresenceHandler(BaseHandler):
 
     def push_update_to_clients(self, observer_user, observed_user,
                                statuscache):
+        state = statuscache.make_event(user=observed_user, clock=self.clock)
+
         self.notifier.on_new_user_event(
             observer_user.to_string(),
-            event_data=statuscache.make_event(user=observed_user),
+            event_data=statuscache.make_event(
+                user=observed_user,
+                clock=self.clock
+            ),
             stream_type=PresenceStreamData,
             store_id=statuscache.serial
         )
@@ -652,8 +672,10 @@ class PresenceStreamData(StreamData):
                    if from_key < cachemap[k].serial <= to_key]
 
         if updates:
+            clock = self.presence.clock
+
             latest_serial = max([x[1].serial for x in updates])
-            data = [x[1].make_event(user=x[0]) for x in updates]
+            data = [x[1].make_event(user=x[0], clock=clock) for x in updates]
             return ((data, latest_serial))
         else:
             return (([], self.presence._user_cachemap_latest_serial))
@@ -674,6 +696,8 @@ class UserPresenceCache(object):
         self.serial = None
 
     def update(self, state, serial):
+        assert("mtime_age" not in state)
+
         self.state.update(state)
         # Delete keys that are now 'None'
         for k in self.state.keys():
@@ -691,8 +715,11 @@ class UserPresenceCache(object):
         # clone it so caller can't break our cache
         return dict(self.state)
 
-    def make_event(self, user):
+    def make_event(self, user, clock):
         content = self.get_state()
         content["user_id"] = user.to_string()
 
+        if "mtime" in content:
+            content["mtime_age"] = clock.time_msec() - content.pop("mtime")
+
         return {"type": "m.presence", "content": content}
diff --git a/synapse/http/client.py b/synapse/http/client.py
index 5c73d62cfd..36ba2c6591 100644
--- a/synapse/http/client.py
+++ b/synapse/http/client.py
@@ -32,7 +32,7 @@ import urllib
 
 logger = logging.getLogger(__name__)
 
-
+# FIXME: SURELY these should be killed?!
 _destination_mappings = {
     "red": "localhost:8080",
     "blue": "localhost:8081",
@@ -147,7 +147,7 @@ class TwistedHttpClient(HttpClient):
             destination.encode("ascii"),
             "GET",
             path.encode("ascii"),
-            query_bytes
+            query_bytes=query_bytes
         )
 
         body = yield readBody(response)
diff --git a/synapse/rest/directory.py b/synapse/rest/directory.py
index 31fd26e848..be9a3f5f9f 100644
--- a/synapse/rest/directory.py
+++ b/synapse/rest/directory.py
@@ -16,7 +16,6 @@
 
 from twisted.internet import defer
 
-from synapse.types import RoomAlias, RoomID
 from base import RestServlet, client_path_pattern
 
 import json
@@ -36,17 +35,10 @@ class ClientDirectoryServer(RestServlet):
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_alias):
-        # TODO(erikj): Handle request
-        local_only = "local_only" in request.args
-
-        room_alias = urllib.unquote(room_alias)
-        room_alias_obj = RoomAlias.from_string(room_alias, self.hs)
+        room_alias = self.hs.parse_roomalias(urllib.unquote(room_alias))
 
         dir_handler = self.handlers.directory_handler
-        res = yield dir_handler.get_association(
-            room_alias_obj,
-            local_only=local_only
-        )
+        res = yield dir_handler.get_association(room_alias)
 
         defer.returnValue((200, res))
 
@@ -57,10 +49,9 @@ class ClientDirectoryServer(RestServlet):
 
         logger.debug("Got content: %s", content)
 
-        room_alias = urllib.unquote(room_alias)
-        room_alias_obj = RoomAlias.from_string(room_alias, self.hs)
+        room_alias = self.hs.parse_roomalias(urllib.unquote(room_alias))
 
-        logger.debug("Got room name: %s", room_alias_obj.to_string())
+        logger.debug("Got room name: %s", room_alias.to_string())
 
         room_id = content["room_id"]
         servers = content["servers"]
@@ -75,7 +66,7 @@ class ClientDirectoryServer(RestServlet):
 
         try:
             yield dir_handler.create_association(
-                room_alias_obj, room_id, servers
+                room_alias, room_id, servers
             )
         except:
             logger.exception("Failed to create association")
diff --git a/synapse/rest/room.py b/synapse/rest/room.py
index 228bc9623d..1fc0c996b8 100644
--- a/synapse/rest/room.py
+++ b/synapse/rest/room.py
@@ -22,7 +22,6 @@ from synapse.api.events.room import (RoomTopicEvent, MessageEvent,
                                      RoomMemberEvent, FeedbackEvent)
 from synapse.api.constants import Feedback, Membership
 from synapse.api.streams import PaginationConfig
-from synapse.types import RoomAlias
 
 import json
 import logging
@@ -150,10 +149,7 @@ class JoinRoomAliasServlet(RestServlet):
 
         logger.debug("room_alias: %s", room_alias)
 
-        room_alias = RoomAlias.from_string(
-            urllib.unquote(room_alias),
-            self.hs
-        )
+        room_alias = self.hs.parse_roomalias(urllib.unquote(room_alias))
 
         handler = self.handlers.room_member_handler
         ret_dict = yield handler.join_room_alias(user, room_alias)
diff --git a/synapse/server.py b/synapse/server.py
index 0211972d05..96830a88b1 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -28,7 +28,7 @@ from synapse.handlers import Handlers
 from synapse.rest import RestServletFactory
 from synapse.state import StateHandler
 from synapse.storage import DataStore
-from synapse.types import UserID
+from synapse.types import UserID, RoomAlias
 from synapse.util import Clock
 from synapse.util.distributor import Distributor
 from synapse.util.lockutils import LockManager
@@ -120,6 +120,11 @@ class BaseHomeServer(object):
         object."""
         return UserID.from_string(s, hs=self)
 
+    def parse_roomalias(self, s):
+        """Parse the string given by 's' as a Room Alias and return a RoomAlias
+        object."""
+        return RoomAlias.from_string(s, hs=self)
+
 # Build magic accessors for every dependency
 for depname in BaseHomeServer.DEPENDENCIES:
     BaseHomeServer._make_dependency_method(depname)
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index 4fcef45e93..d38d613450 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -44,7 +44,6 @@ class DataStore(RoomDataStore, RoomMemberStore, MessageStore, RoomStore,
     def __init__(self, hs):
         super(DataStore, self).__init__(hs)
         self.event_factory = hs.get_event_factory()
-        self.hs = hs
 
     @defer.inlineCallbacks
     def persist_event(self, event):
diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 03537b7e3b..489b6bd171 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -28,8 +28,10 @@ logger = logging.getLogger(__name__)
 class SQLBaseStore(object):
 
     def __init__(self, hs):
+        self.hs = hs
         self._db_pool = hs.get_db_pool()
         self.event_factory = hs.get_event_factory()
+        self._clock = hs.get_clock()
 
     def cursor_to_dict(self, cursor):
         """Converts a SQL cursor into an list of dicts.
diff --git a/synapse/storage/pdu.py b/synapse/storage/pdu.py
index 202d7f6cb6..13adc581e1 100644
--- a/synapse/storage/pdu.py
+++ b/synapse/storage/pdu.py
@@ -168,7 +168,7 @@ class PduStore(SQLBaseStore):
 
         return self._get_pdu_tuples(txn, txn.fetchall())
 
-    def get_pagination(self, context, pdu_list, limit):
+    def get_backfill(self, context, pdu_list, limit):
         """Get a list of Pdus for a given topic that occured before (and
         including) the pdus in pdu_list. Return a list of max size `limit`.
 
@@ -182,12 +182,12 @@ class PduStore(SQLBaseStore):
             list: A list of PduTuples
         """
         return self._db_pool.runInteraction(
-            self._get_paginate, context, pdu_list, limit
+            self._get_backfill, context, pdu_list, limit
         )
 
-    def _get_paginate(self, txn, context, pdu_list, limit):
+    def _get_backfill(self, txn, context, pdu_list, limit):
         logger.debug(
-            "paginate: %s, %s, %s",
+            "backfill: %s, %s, %s",
             context, repr(pdu_list), limit
         )
 
@@ -213,7 +213,7 @@ class PduStore(SQLBaseStore):
             new_front = []
             for pdu_id, origin in front:
                 logger.debug(
-                    "_paginate_interaction: i=%s, o=%s",
+                    "_backfill_interaction: i=%s, o=%s",
                     pdu_id, origin
                 )
 
@@ -224,7 +224,7 @@ class PduStore(SQLBaseStore):
 
                 for row in txn.fetchall():
                     logger.debug(
-                        "_paginate_interaction: got i=%s, o=%s",
+                        "_backfill_interaction: got i=%s, o=%s",
                         *row
                     )
                     new_front.append(row)
@@ -262,7 +262,7 @@ class PduStore(SQLBaseStore):
 
     def update_min_depth_for_context(self, context, depth):
         """Update the minimum `depth` of the given context, which is the line
-        where we stop paginating backwards on.
+        on which we stop backfilling backwards.
 
         Args:
             context (str)
@@ -320,9 +320,9 @@ class PduStore(SQLBaseStore):
         return [(row[0], row[1], row[2]) for row in results]
 
     def get_oldest_pdus_in_context(self, context):
-        """Get a list of Pdus that we paginated beyond yet (and haven't seen).
-        This list is used when we want to paginate backwards and is the list we
-        send to the remote server.
+        """Get a list of Pdus that we haven't backfilled beyond yet (and haven't    
+        seen). This list is used when we want to backfill backwards and is the 
+        list we send to the remote server.
 
         Args:
             txn
diff --git a/synapse/storage/presence.py b/synapse/storage/presence.py
index 6f5b042c25..23b6d1694e 100644
--- a/synapse/storage/presence.py
+++ b/synapse/storage/presence.py
@@ -35,7 +35,7 @@ class PresenceStore(SQLBaseStore):
         return self._simple_select_one(
             table="presence",
             keyvalues={"user_id": user_localpart},
-            retcols=["state", "status_msg"],
+            retcols=["state", "status_msg", "mtime"],
         )
 
     def set_presence_state(self, user_localpart, new_state):
@@ -43,7 +43,8 @@ class PresenceStore(SQLBaseStore):
             table="presence",
             keyvalues={"user_id": user_localpart},
             updatevalues={"state": new_state["state"],
-                          "status_msg": new_state["status_msg"]},
+                          "status_msg": new_state["status_msg"],
+                          "mtime": self._clock.time_msec()},
             retcols=["state"],
         )
 
diff --git a/synapse/storage/schema/presence.sql b/synapse/storage/schema/presence.sql
index b22e3ba863..b1081d3aab 100644
--- a/synapse/storage/schema/presence.sql
+++ b/synapse/storage/schema/presence.sql
@@ -16,6 +16,7 @@ CREATE TABLE IF NOT EXISTS presence(
   user_id INTEGER NOT NULL,
   state INTEGER,
   status_msg TEXT,
+  mtime INTEGER, -- miliseconds since last state change
   FOREIGN KEY(user_id) REFERENCES users(id)
 );
 
diff --git a/tests/federation/test_federation.py b/tests/federation/test_federation.py
index a3bcb5ede8..ec39c7ee33 100644
--- a/tests/federation/test_federation.py
+++ b/tests/federation/test_federation.py
@@ -20,7 +20,7 @@ from twisted.trial import unittest
 from mock import Mock
 import logging
 
-from ..utils import MockHttpServer
+from ..utils import MockHttpServer, MockClock
 
 from synapse.server import HomeServer
 from synapse.federation import initialize_http_replication
@@ -48,16 +48,6 @@ def make_pdu(prev_pdus=[], **kwargs):
     return PduTuple(PduEntry(**pdu_fields), prev_pdus)
 
 
-class MockClock(object):
-    now = 1000
-
-    def time(self):
-        return self.now
-
-    def time_msec(self):
-        return self.time() * 1000
-
-
 class FederationTestCase(unittest.TestCase):
     def setUp(self):
         self.mock_http_server = MockHttpServer()
diff --git a/tests/handlers/test_directory.py b/tests/handlers/test_directory.py
new file mode 100644
index 0000000000..0ace2d0c9a
--- /dev/null
+++ b/tests/handlers/test_directory.py
@@ -0,0 +1,112 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014 matrix.org
+#
+# 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.
+
+
+from twisted.trial import unittest
+from twisted.internet import defer
+
+from mock import Mock
+import logging
+
+from synapse.server import HomeServer
+from synapse.handlers.directory import DirectoryHandler
+from synapse.storage.directory import RoomAliasMapping
+
+
+logging.getLogger().addHandler(logging.NullHandler())
+
+
+class DirectoryHandlers(object):
+    def __init__(self, hs):
+        self.directory_handler = DirectoryHandler(hs)
+
+
+class DirectoryTestCase(unittest.TestCase):
+    """ Tests the directory service. """
+
+    def setUp(self):
+        self.mock_federation = Mock(spec=[
+            "make_query",
+        ])
+
+        self.query_handlers = {}
+        def register_query_handler(query_type, handler):
+            self.query_handlers[query_type] = handler
+        self.mock_federation.register_query_handler = register_query_handler
+
+        hs = HomeServer("test",
+            datastore=Mock(spec=[
+                "get_association_from_room_alias",
+            ]),
+            http_client=None,
+            http_server=Mock(),
+            replication_layer=self.mock_federation,
+        )
+        hs.handlers = DirectoryHandlers(hs)
+
+        self.handler = hs.get_handlers().directory_handler
+
+        self.datastore = hs.get_datastore()
+
+        self.my_room = hs.parse_roomalias("#my-room:test")
+        self.remote_room = hs.parse_roomalias("#another:remote")
+
+    @defer.inlineCallbacks
+    def test_get_local_association(self):
+        mocked_get = self.datastore.get_association_from_room_alias
+        mocked_get.return_value = defer.succeed(
+            RoomAliasMapping("!8765qwer:test", "#my-room:test", ["test"])
+        )
+
+        result = yield self.handler.get_association(self.my_room)
+
+        self.assertEquals({
+            "room_id": "!8765qwer:test",
+            "servers": ["test"],
+        }, result)
+
+    @defer.inlineCallbacks
+    def test_get_remote_association(self):
+        self.mock_federation.make_query.return_value = defer.succeed(
+            {"room_id": "!8765qwer:test", "servers": ["test", "remote"]}
+        )
+
+        result = yield self.handler.get_association(self.remote_room)
+
+        self.assertEquals({
+            "room_id": "!8765qwer:test",
+            "servers": ["test", "remote"],
+        }, result)
+        self.mock_federation.make_query.assert_called_with(
+            destination="remote",
+            query_type="directory",
+            args={"room_alias": "#another:remote"}
+        )
+
+    @defer.inlineCallbacks
+    def test_incoming_fed_query(self):
+        mocked_get = self.datastore.get_association_from_room_alias
+        mocked_get.return_value = defer.succeed(
+            RoomAliasMapping("!8765asdf:test", "#your-room:test", ["test"])
+        )
+
+        response = yield self.query_handlers["directory"](
+            {"room_alias": "#your-room:test"}
+        )
+
+        self.assertEquals({
+            "room_id": "!8765asdf:test",
+            "servers": ["test"],
+        }, response)
diff --git a/tests/handlers/test_presence.py b/tests/handlers/test_presence.py
index 2299a2a7ba..b365741d99 100644
--- a/tests/handlers/test_presence.py
+++ b/tests/handlers/test_presence.py
@@ -20,6 +20,8 @@ from twisted.internet import defer
 from mock import Mock, call, ANY
 import logging
 
+from ..utils import MockClock
+
 from synapse.server import HomeServer
 from synapse.api.constants import PresenceState
 from synapse.api.errors import SynapseError
@@ -55,6 +57,7 @@ class PresenceStateTestCase(unittest.TestCase):
 
     def setUp(self):
         hs = HomeServer("test",
+                clock=MockClock(),
                 db_pool=None,
                 datastore=Mock(spec=[
                     "get_presence_state",
@@ -154,7 +157,11 @@ class PresenceStateTestCase(unittest.TestCase):
         mocked_set.assert_called_with("apple",
                 {"state": UNAVAILABLE, "status_msg": "Away"})
         self.mock_start.assert_called_with(self.u_apple,
-                state={"state": UNAVAILABLE, "status_msg": "Away"})
+                state={
+                    "state": UNAVAILABLE,
+                    "status_msg": "Away",
+                    "mtime": 1000000, # MockClock
+                })
 
         yield self.handler.set_state(
                 target_user=self.u_apple, auth_user=self.u_apple,
@@ -386,7 +393,10 @@ class PresencePushTestCase(unittest.TestCase):
         self.replication.send_edu = Mock()
         self.replication.send_edu.return_value = defer.succeed((200, "OK"))
 
+        self.clock = MockClock()
+
         hs = HomeServer("test",
+                clock=self.clock,
                 db_pool=None,
                 datastore=Mock(spec=[
                     "set_presence_state",
@@ -519,13 +529,18 @@ class PresencePushTestCase(unittest.TestCase):
         yield self.handler.set_state(self.u_banana, self.u_banana,
                 {"state": ONLINE})
 
+        self.clock.advance_time(2)
+
         presence = yield self.handler.get_presence_list(
                 observer_user=self.u_apple, accepted=True)
 
         self.assertEquals([
-                {"observed_user": self.u_banana, "state": ONLINE},
-                {"observed_user": self.u_clementine, "state": OFFLINE}],
-            presence)
+                {"observed_user": self.u_banana,
+                 "state": ONLINE,
+                 "mtime_age": 2000},
+                {"observed_user": self.u_clementine,
+                 "state": OFFLINE},
+        ], presence)
 
         self.mock_update_client.assert_has_calls([
                 call(observer_user=self.u_banana,
@@ -555,7 +570,8 @@ class PresencePushTestCase(unittest.TestCase):
                     content={
                         "push": [
                             {"user_id": "@apple:test",
-                            "state": "online"},
+                             "state": "online",
+                             "mtime_age": 0},
                         ],
                     }),
                 call(
@@ -564,7 +580,8 @@ class PresencePushTestCase(unittest.TestCase):
                     content={
                         "push": [
                             {"user_id": "@apple:test",
-                             "state": "online"},
+                             "state": "online",
+                             "mtime_age": 0},
                         ],
                     })
         ], any_order=True)
@@ -582,7 +599,8 @@ class PresencePushTestCase(unittest.TestCase):
                 "remote", "m.presence", {
                     "push": [
                         {"user_id": "@potato:remote",
-                         "state": "online"},
+                         "state": "online",
+                         "mtime_age": 1000},
                     ],
                 }
         )
@@ -596,9 +614,11 @@ class PresencePushTestCase(unittest.TestCase):
                     statuscache=ANY),
         ], any_order=True)
 
+        self.clock.advance_time(2)
+
         state = yield self.handler.get_state(self.u_potato, self.u_apple)
 
-        self.assertEquals({"state": ONLINE}, state)
+        self.assertEquals({"state": ONLINE, "mtime_age": 3000}, state)
 
     @defer.inlineCallbacks
     def test_join_room_local(self):
diff --git a/tests/handlers/test_presencelike.py b/tests/handlers/test_presencelike.py
index f244ab6007..6eeb1bb522 100644
--- a/tests/handlers/test_presencelike.py
+++ b/tests/handlers/test_presencelike.py
@@ -22,6 +22,8 @@ from twisted.internet import defer
 from mock import Mock, call, ANY
 import logging
 
+from ..utils import MockClock
+
 from synapse.server import HomeServer
 from synapse.api.constants import PresenceState
 from synapse.handlers.presence import PresenceHandler
@@ -60,9 +62,11 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
 
     def setUp(self):
         hs = HomeServer("test",
+                clock=MockClock(),
                 db_pool=None,
                 datastore=Mock(spec=[
                     "set_presence_state",
+                    "is_presence_visible",
 
                     "set_profile_displayname",
                 ]),
@@ -83,6 +87,10 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
             return defer.succeed("Frank")
         self.datastore.get_profile_displayname = get_profile_displayname
 
+        def is_presence_visible(*args, **kwargs):
+            return defer.succeed(False)
+        self.datastore.is_presence_visible = is_presence_visible
+
         def get_profile_avatar_url(user_localpart):
             return defer.succeed("http://foo")
         self.datastore.get_profile_avatar_url = get_profile_avatar_url
@@ -96,14 +104,9 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
 
         self.handlers = hs.get_handlers()
 
-        self.mock_start = Mock()
-        self.mock_stop = Mock()
-
         self.mock_update_client = Mock()
         self.mock_update_client.return_value = defer.succeed(None)
 
-        self.handlers.presence_handler.start_polling_presence = self.mock_start
-        self.handlers.presence_handler.stop_polling_presence = self.mock_stop
         self.handlers.presence_handler.push_update_to_clients = (
                 self.mock_update_client)
 
@@ -132,10 +135,6 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
 
         mocked_set.assert_called_with("apple",
                 {"state": UNAVAILABLE, "status_msg": "Away"})
-        self.mock_start.assert_called_with(self.u_apple,
-                state={"state": UNAVAILABLE, "status_msg": "Away",
-                       "displayname": "Frank",
-                       "avatar_url": "http://foo"})
 
     @defer.inlineCallbacks
     def test_push_local(self):
@@ -160,10 +159,14 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
                 observer_user=self.u_apple, accepted=True)
 
         self.assertEquals([
-                {"observed_user": self.u_banana, "state": ONLINE,
-                    "displayname": "Frank", "avatar_url": "http://foo"},
-                {"observed_user": self.u_clementine, "state": OFFLINE}],
-            presence)
+            {"observed_user": self.u_banana,
+                "state": ONLINE,
+                "mtime_age": 0,
+                "displayname": "Frank",
+                "avatar_url": "http://foo"},
+            {"observed_user": self.u_clementine,
+                "state": OFFLINE}],
+        presence)
 
         self.mock_update_client.assert_has_calls([
             call(observer_user=self.u_apple,
@@ -175,9 +178,12 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
         ], any_order=True)
 
         statuscache = self.mock_update_client.call_args[1]["statuscache"]
-        self.assertEquals({"state": ONLINE,
-                           "displayname": "Frank",
-                           "avatar_url": "http://foo"}, statuscache.state)
+        self.assertEquals({
+            "state": ONLINE,
+            "mtime": 1000000, # MockClock
+            "displayname": "Frank",
+            "avatar_url": "http://foo",
+        }, statuscache.state)
 
         self.mock_update_client.reset_mock()
 
@@ -197,9 +203,12 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
         ], any_order=True)
 
         statuscache = self.mock_update_client.call_args[1]["statuscache"]
-        self.assertEquals({"state": ONLINE,
-                           "displayname": "I am an Apple",
-                           "avatar_url": "http://foo"}, statuscache.state)
+        self.assertEquals({
+            "state": ONLINE,
+            "mtime": 1000000, # MockClock
+            "displayname": "I am an Apple",
+            "avatar_url": "http://foo",
+        }, statuscache.state)
 
     @defer.inlineCallbacks
     def test_push_remote(self):
@@ -224,6 +233,7 @@ class PresenceProfilelikeDataTestCase(unittest.TestCase):
                     "push": [
                         {"user_id": "@apple:test",
                          "state": "online",
+                         "mtime_age": 0,
                          "displayname": "Frank",
                          "avatar_url": "http://foo"},
                     ],
diff --git a/tests/rest/test_presence.py b/tests/rest/test_presence.py
index 7c54e067c9..f013abbee4 100644
--- a/tests/rest/test_presence.py
+++ b/tests/rest/test_presence.py
@@ -234,7 +234,11 @@ class PresenceEventStreamTestCase(unittest.TestCase):
         # I'll already get my own presence state change
         self.assertEquals({"start": "0", "end": "1", "chunk": [
             {"type": "m.presence",
-             "content": {"user_id": "@apple:test", "state": ONLINE}},
+             "content": {
+                 "user_id": "@apple:test",
+                 "state": ONLINE,
+                 "mtime_age": 0,
+            }},
         ]}, response)
 
         self.mock_datastore.set_presence_state.return_value = defer.succeed(
@@ -251,5 +255,9 @@ class PresenceEventStreamTestCase(unittest.TestCase):
         self.assertEquals(200, code)
         self.assertEquals({"start": "1", "end": "2", "chunk": [
             {"type": "m.presence",
-             "content": {"user_id": "@banana:test", "state": ONLINE}},
+             "content": {
+                 "user_id": "@banana:test",
+                 "state": ONLINE,
+                 "mtime_age": 0,
+            }},
         ]}, response)
diff --git a/tests/test_types.py b/tests/test_types.py
index 522d52363d..d2ccbcfa55 100644
--- a/tests/test_types.py
+++ b/tests/test_types.py
@@ -62,3 +62,9 @@ class RoomAliasTestCase(unittest.TestCase):
         room = RoomAlias("channel", "my.domain", True)
 
         self.assertEquals(room.to_string(), "#channel:my.domain")
+
+    def test_via_homeserver(self):
+        room = mock_homeserver.parse_roomalias("#elsewhere:my.domain")
+
+        self.assertEquals("elsewhere", room.localpart)
+        self.assertEquals("my.domain", room.domain)
diff --git a/tests/utils.py b/tests/utils.py
index 578866b4f4..20a63316fd 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -95,6 +95,20 @@ class MockHttpServer(HttpServer):
         self.callbacks.append((method, path_pattern, callback))
 
 
+class MockClock(object):
+    now = 1000
+
+    def time(self):
+        return self.now
+
+    def time_msec(self):
+        return self.time() * 1000
+
+    # For unit testing
+    def advance_time(self, secs):
+        self.now += secs
+
+
 class MemoryDataStore(object):
 
     class RoomMember(namedtuple(
diff --git a/webclient/app.css b/webclient/app.css
index 15b6c91300..65049c95c9 100644
--- a/webclient/app.css
+++ b/webclient/app.css
@@ -11,21 +11,33 @@ h1 {
 /*** Overall page layout ***/
 
 .page {
-    max-width: 1280px;
+    position: absolute;
+    top: 80px;
+    bottom: 100px;
+    left: 0px;
+    right: 0px;
+    margin: 20px;
+    margin: 20px;
+}
+
+.wrapper {
     margin: auto;
-    margin-bottom: 80px ! important;
-    padding-left: 20px;
-    padding-right: 20px;
+    max-width: 1280px;
+    height: 100%;
 }
 
 .roomName {
+    max-width: 1280px;
+    width: 100%;
     text-align: right;
+    top: -40px;
+    position: absolute;
     font-size: 16pt;
     margin-bottom: 10px;
 }
 
 .controlPanel {
-    position: fixed;
+    position: absolute;
     bottom: 0px;
     width: 100%;
     background-color: #f8f8f8;
@@ -70,8 +82,9 @@ h1 {
 
 .userAvatar {
     width: 80px;
-    height: 80px;
+    height: 100px;
     position: relative;
+    background-color: #000;
 }
 
 .userAvatar .userAvatarImage {
@@ -81,7 +94,7 @@ h1 {
 
 .userAvatar .userAvatarGradient {
     position: absolute;
-    bottom: 0px;
+    bottom: 20px;
 }
 
 .userAvatar .userName {
@@ -91,7 +104,6 @@ h1 {
     bottom: 0px;
     font-size: 8pt;
     word-wrap: break-word;
-    word-break: break-all;
 }
 
 .userPresence {
@@ -110,27 +122,18 @@ h1 {
     background-color: #FFCC00;
 }
 
-/*** Room page  ***/
-
-/* Limit the height of the page content to 100% of the viewport height minus the
-   height of the header and the footer.
-   The two divs containing the messages list and the users list will then scroll-
-   overflow separetely. 
-  */
-.room .page {
-    height: calc(100vh - 220px); 
-}
-
 /*** Message table ***/
 
 .messageTableWrapper {
-    width: auto;
     height: 100%;
     margin-right: 140px;
     overflow-y: auto;
+    width: auto;
 }
 
 .messageTable {
+    margin: auto;
+    max-width: 1280px;
     width: 100%;
     border-collapse: collapse;
 }
@@ -180,6 +183,8 @@ h1 {
     height: 32px;
     display: inline-table;
     max-width: 90%;
+    word-wrap: break-word;
+    word-break: break-all;
 }
 
 .emote {
@@ -217,18 +222,28 @@ h1 {
 /******************************/
 
 .header {
-    margin-top: 12px ! important;
     padding-left: 20px;
     padding-right: 20px;
     max-width: 1280px;
     margin: auto;
-    height: 60px;
 }
 
 .header-buttons {
     float: right;
 }
 
+.config {
+    position: absolute;
+    z-index: 100;
+    top: 100px;
+    left: 50%;
+    width: 400px;
+    margin-left: -200px;
+    text-align: center;
+    padding: 20px;
+    background-color: #aaa;
+}
+
 .text_entry_section {
     position: fixed;
     bottom: 0;
diff --git a/webclient/app.js b/webclient/app.js
index 2133a98cbf..651aeeaa77 100644
--- a/webclient/app.js
+++ b/webclient/app.js
@@ -70,4 +70,9 @@ matrixWebClient
                 $timeout(function() { element[0].focus() }, 0);
             }
         };
-    }]);
+    }])
+    .filter('to_trusted', ['$sce', function($sce){
+        return function(text) {
+            return $sce.trustAsHtml(text);
+        };
+    }]);
\ No newline at end of file
diff --git a/webclient/login/login.html b/webclient/login/login.html
index 0d3e8c57fd..508ff5e4bf 100644
--- a/webclient/login/login.html
+++ b/webclient/login/login.html
@@ -1,5 +1,6 @@
 <div ng-controller="LoginController" class="login">
     <div class="page">
+    <div class="wrapper">
 
     {{ feedback }}
         
@@ -48,4 +49,5 @@
     
 
     </div>
+    </div>
 </div>
diff --git a/webclient/room/room-controller.js b/webclient/room/room-controller.js
index 5d1c65641e..470f41521a 100644
--- a/webclient/room/room-controller.js
+++ b/webclient/room/room-controller.js
@@ -42,6 +42,8 @@ angular.module('RoomController', [])
                 console.log("Got response from "+$scope.state.events_from+" to "+response.data.end);
                 $scope.state.events_from = response.data.end;
 
+                $scope.feedback = "";
+
                 for (var i = 0; i < response.data.chunk.length; i++) {
                     var chunk = response.data.chunk[i];
                     if (chunk.room_id == $scope.room_id && chunk.type == "m.room.message") {
@@ -68,12 +70,17 @@ angular.module('RoomController', [])
                     $timeout(shortPoll, 0);
                 }
             }, function(response) {
-                $scope.feedback = "Can't stream: " + JSON.stringify(response);
+                $scope.feedback = "Can't stream: " + response.data;
+
+                if (response.status == 403) {
+                    $scope.stopPoll = true;
+                }
+                
                 if ($scope.stopPoll) {
                     console.log("Stopping polling.");
                 }
                 else {
-                    $timeout(shortPoll, 2000);
+                    $timeout(shortPoll, 5000);
                 }
             });
     };
diff --git a/webclient/room/room.html b/webclient/room/room.html
index 87d3458af5..8fc7d5d360 100644
--- a/webclient/room/room.html
+++ b/webclient/room/room.html
@@ -1,6 +1,7 @@
 <div ng-controller="RoomController" data-ng-init="onInit()" class="room">
 
     <div class="page">
+    <div class="wrapper">
 
     <div class="roomName">
         {{ room_alias || room_id }}
@@ -12,7 +13,8 @@
                 <td class="userAvatar">
                     <img class="userAvatarImage" ng-src="{{info.avatar_url || 'img/default-profile.jpg'}}" width="80" height="80"/>
                     <img class="userAvatarGradient" src="img/gradient.png" width="80" height="24"/>
-                    <div class="userName">{{ info.displayname || name }}</div>
+                    <!-- FIXME: does allowing <wbr/> to be unescaped introduce HTML injections from user IDs and display names? -->
+                    <div class="userName" ng-bind-html="info.displayname || (name.substr(0, name.indexOf(':')) + '<wbr/>' + name.substr(name.indexOf(':'))) | to_trusted"></div>
                 </td>
                 <td class="userPresence" ng-class="info.presenceState === 'online' ? 'online' : (info.presenceState === 'unavailable' ? 'unavailable' : '')" />
         </table>
@@ -31,7 +33,7 @@
                 </td>
                 <td ng-class="!msg.content.membership_target ? (msg.content.msgtype === 'm.emote' ? 'emote text' : 'text') : ''">
                     <div class="bubble">
-                        {{ msg.content.msgtype === "m.emote" ? ("* " + (members[msg.user_id].displayname || msg.user_id) + " ") : "" }}
+                        {{ msg.content.msgtype === "m.emote" ? ("* " + (members[msg.user_id].displayname || msg.user_id) + " " + msg.content.body) : "" }}
                         {{ msg.content.msgtype === "m.text" ? msg.content.body : "" }}
                         <img class="image" ng-hide='msg.content.msgtype !== "m.image"' src="{{ msg.content.url }}" alt="{{ msg.content.body }}"/>
                     </div>
@@ -45,6 +47,7 @@
     </div>
     
     </div>
+    </div>
 
     <div class="controlPanel">
         <div class="controls">
@@ -53,7 +56,7 @@
                     <td width="1">
                         {{ state.user_id }} 
                     </td>
-                    <td width="*">
+                    <td width="*" style="min-width: 100px">
                         <input class="mainInput" ng-model="textInput" ng-enter="send()" ng-focus="true"/>
                     </td>
                     <td width="1">
@@ -85,7 +88,5 @@
             <button ng-click="leaveRoom()">Leave</button>
         </div>
     </div>
-    
-    
 
  </div>
diff --git a/webclient/rooms/rooms.html b/webclient/rooms/rooms.html
index f134e5ee8c..d303e143b9 100644
--- a/webclient/rooms/rooms.html
+++ b/webclient/rooms/rooms.html
@@ -1,7 +1,8 @@
 <div ng-controller="RoomsController" class="rooms">
 
     <div class="page">
-        
+    <div class="wrapper">
+            
     <div>
         <form>
             <input size="40" ng-model="newProfileInfo.name" ng-enter="setDisplayName(newProfileInfo.name)" />
@@ -77,4 +78,5 @@
     {{ feedback }}
 
     </div>    
+    </div>
 </div>