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-rw-r--r--MANIFEST.in7
-rw-r--r--synapse/api/auth.py73
-rw-r--r--synapse/api/filtering.py20
-rwxr-xr-xsynapse/app/homeserver.py4
-rw-r--r--synapse/federation/federation_client.py33
-rw-r--r--synapse/federation/federation_server.py31
-rw-r--r--synapse/federation/transport/client.py16
-rw-r--r--synapse/federation/transport/server.py39
-rw-r--r--synapse/handlers/_base.py18
-rw-r--r--synapse/handlers/events.py10
-rw-r--r--synapse/handlers/federation.py99
-rw-r--r--synapse/handlers/message.py47
-rw-r--r--synapse/handlers/presence.py4
-rw-r--r--synapse/handlers/private_user_data.py2
-rw-r--r--synapse/handlers/receipts.py6
-rw-r--r--synapse/handlers/room.py30
-rw-r--r--synapse/handlers/search.py201
-rw-r--r--synapse/handlers/sync.py20
-rw-r--r--synapse/handlers/typing.py11
-rw-r--r--synapse/http/matrixfederationclient.py10
-rw-r--r--synapse/notifier.py42
-rw-r--r--synapse/rest/client/v1/events.py13
-rw-r--r--synapse/rest/client/v1/room.py29
-rw-r--r--synapse/static/client/login/index.html50
-rw-r--r--synapse/static/client/login/js/jquery-2.1.3.min.js (renamed from static/client/register/js/jquery-2.1.3.min.js)0
-rw-r--r--synapse/static/client/login/js/login.js167
-rw-r--r--synapse/static/client/login/spinner.gifbin0 -> 1849 bytes
-rw-r--r--synapse/static/client/login/style.css57
-rw-r--r--synapse/static/client/register/index.html (renamed from static/client/register/index.html)0
-rw-r--r--synapse/static/client/register/js/jquery-2.1.3.min.js4
-rw-r--r--synapse/static/client/register/js/recaptcha_ajax.js (renamed from static/client/register/js/recaptcha_ajax.js)0
-rw-r--r--synapse/static/client/register/js/register.js (renamed from static/client/register/js/register.js)0
-rw-r--r--synapse/static/client/register/register_config.sample.js (renamed from static/client/register/register_config.sample.js)0
-rw-r--r--synapse/static/client/register/style.css (renamed from static/client/register/style.css)0
-rw-r--r--synapse/storage/events.py2
-rw-r--r--synapse/storage/room.py13
-rw-r--r--synapse/storage/schema/delta/25/history_visibility.sql26
-rw-r--r--synapse/storage/search.py120
-rw-r--r--synapse/storage/stream.py46
-rw-r--r--synapse/util/retryutils.py7
-rw-r--r--synapse/util/third_party_invites.py69
-rw-r--r--tests/handlers/test_presence.py71
-rw-r--r--tests/handlers/test_typing.py30
-rw-r--r--tests/rest/client/v1/test_presence.py9
-rw-r--r--tests/rest/client/v1/test_typing.py5
45 files changed, 1117 insertions, 324 deletions
diff --git a/MANIFEST.in b/MANIFEST.in
index 621e34cb76..573e21f41d 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -15,8 +15,9 @@ recursive-include scripts *
 recursive-include scripts-dev *
 recursive-include tests *.py
 
-recursive-include static *.css
-recursive-include static *.html
-recursive-include static *.js
+recursive-include synapse/static *.css
+recursive-include synapse/static *.gif
+recursive-include synapse/static *.html
+recursive-include synapse/static *.js
 
 prune demo/etc
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index dfbbc5a1cd..3e891a6193 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -24,7 +24,6 @@ from synapse.api.constants import EventTypes, Membership, JoinRules
 from synapse.api.errors import AuthError, Codes, SynapseError, EventSizeError
 from synapse.types import RoomID, UserID, EventID
 from synapse.util.logutils import log_function
-from synapse.util import third_party_invites
 from unpaddedbase64 import decode_base64
 
 import logging
@@ -318,6 +317,11 @@ class Auth(object):
             }
         )
 
+        if Membership.INVITE == membership and "third_party_invite" in event.content:
+            if not self._verify_third_party_invite(event, auth_events):
+                raise AuthError(403, "You are not invited to this room.")
+            return True
+
         if Membership.JOIN != membership:
             if (caller_invited
                     and Membership.LEAVE == membership
@@ -361,8 +365,7 @@ class Auth(object):
                 pass
             elif join_rule == JoinRules.INVITE:
                 if not caller_in_room and not caller_invited:
-                    if not self._verify_third_party_invite(event, auth_events):
-                        raise AuthError(403, "You are not invited to this room.")
+                    raise AuthError(403, "You are not invited to this room.")
             else:
                 # TODO (erikj): may_join list
                 # TODO (erikj): private rooms
@@ -390,10 +393,10 @@ class Auth(object):
 
     def _verify_third_party_invite(self, event, auth_events):
         """
-        Validates that the join event is authorized by a previous third-party invite.
+        Validates that the invite event is authorized by a previous third-party invite.
 
-        Checks that the public key, and keyserver, match those in the invite,
-        and that the join event has a signature issued using that public key.
+        Checks that the public key, and keyserver, match those in the third party invite,
+        and that the invite event has a signature issued using that public key.
 
         Args:
             event: The m.room.member join event being validated.
@@ -404,35 +407,28 @@ class Auth(object):
             True if the event fulfills the expectations of a previous third party
             invite event.
         """
-        if not third_party_invites.join_has_third_party_invite(event.content):
+        if "third_party_invite" not in event.content:
+            return False
+        if "signed" not in event.content["third_party_invite"]:
             return False
-        join_third_party_invite = event.content["third_party_invite"]
-        token = join_third_party_invite["token"]
+        signed = event.content["third_party_invite"]["signed"]
+        for key in {"mxid", "token"}:
+            if key not in signed:
+                return False
+
+        token = signed["token"]
+
         invite_event = auth_events.get(
             (EventTypes.ThirdPartyInvite, token,)
         )
         if not invite_event:
-            logger.info("Failing 3pid invite because no invite found for token %s", token)
+            return False
+
+        if event.user_id != invite_event.user_id:
             return False
         try:
-            public_key = join_third_party_invite["public_key"]
-            key_validity_url = join_third_party_invite["key_validity_url"]
-            if invite_event.content["public_key"] != public_key:
-                logger.info(
-                    "Failing 3pid invite because public key invite: %s != join: %s",
-                    invite_event.content["public_key"],
-                    public_key
-                )
-                return False
-            if invite_event.content["key_validity_url"] != key_validity_url:
-                logger.info(
-                    "Failing 3pid invite because key_validity_url invite: %s != join: %s",
-                    invite_event.content["key_validity_url"],
-                    key_validity_url
-                )
-                return False
-            signed = join_third_party_invite["signed"]
-            if signed["mxid"] != event.user_id:
+            public_key = invite_event.content["public_key"]
+            if signed["mxid"] != event.state_key:
                 return False
             if signed["token"] != token:
                 return False
@@ -445,6 +441,11 @@ class Auth(object):
                         decode_base64(public_key)
                     )
                     verify_signed_json(signed, server, verify_key)
+
+                    # We got the public key from the invite, so we know that the
+                    # correct server signed the signed bundle.
+                    # The caller is responsible for checking that the signing
+                    # server has not revoked that public key.
                     return True
             return False
         except (KeyError, SignatureVerifyException,):
@@ -751,17 +752,19 @@ class Auth(object):
             if e_type == Membership.JOIN:
                 if member_event and not is_public:
                     auth_ids.append(member_event.event_id)
-                if third_party_invites.join_has_third_party_invite(event.content):
+            else:
+                if member_event:
+                    auth_ids.append(member_event.event_id)
+
+            if e_type == Membership.INVITE:
+                if "third_party_invite" in event.content:
                     key = (
                         EventTypes.ThirdPartyInvite,
                         event.content["third_party_invite"]["token"]
                     )
-                    invite = current_state.get(key)
-                    if invite:
-                        auth_ids.append(invite.event_id)
-            else:
-                if member_event:
-                    auth_ids.append(member_event.event_id)
+                    third_party_invite = current_state.get(key)
+                    if third_party_invite:
+                        auth_ids.append(third_party_invite.event_id)
         elif member_event:
             if member_event.content["membership"] == Membership.JOIN:
                 auth_ids.append(member_event.event_id)
diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py
index e4e3d1c59d..aaa2433cae 100644
--- a/synapse/api/filtering.py
+++ b/synapse/api/filtering.py
@@ -50,11 +50,11 @@ class Filtering(object):
         # many definitions.
 
         top_level_definitions = [
-            "public_user_data", "private_user_data", "server_data"
+            "presence"
         ]
 
         room_level_definitions = [
-            "state", "timeline", "ephemeral"
+            "state", "timeline", "ephemeral", "private_user_data"
         ]
 
         for key in top_level_definitions:
@@ -114,22 +114,6 @@ class Filtering(object):
                     if not isinstance(event_type, basestring):
                         raise SynapseError(400, "Event type should be a string")
 
-        if "format" in definition:
-            event_format = definition["format"]
-            if event_format not in ["federation", "events"]:
-                raise SynapseError(400, "Invalid format: %s" % (event_format,))
-
-        if "select" in definition:
-            event_select_list = definition["select"]
-            for select_key in event_select_list:
-                if select_key not in ["event_id", "origin_server_ts",
-                                      "thread_id", "content", "content.body"]:
-                    raise SynapseError(400, "Bad select: %s" % (select_key,))
-
-        if ("bundle_updates" in definition and
-                type(definition["bundle_updates"]) != bool):
-            raise SynapseError(400, "Bad bundle_updates: expected bool.")
-
 
 class FilterCollection(object):
     def __init__(self, filter_json):
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index cf2fa221dc..a77535a4ee 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -132,7 +132,9 @@ class SynapseHomeServer(HomeServer):
 
     def build_resource_for_static_content(self):
         # This is old and should go away: not going to bother adding gzip
-        return File("static")
+        return File(
+            os.path.join(os.path.dirname(synapse.__file__), "static")
+        )
 
     def build_resource_for_content_repo(self):
         return ContentRepoResource(
diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index 723f571284..c0c0b693b8 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -26,7 +26,6 @@ from synapse.api.errors import (
 from synapse.util import unwrapFirstError
 from synapse.util.caches.expiringcache import ExpiringCache
 from synapse.util.logutils import log_function
-from synapse.util import third_party_invites
 from synapse.events import FrozenEvent
 import synapse.metrics
 
@@ -358,7 +357,7 @@ class FederationClient(FederationBase):
         defer.returnValue(signed_auth)
 
     @defer.inlineCallbacks
-    def make_membership_event(self, destinations, room_id, user_id, membership, content):
+    def make_membership_event(self, destinations, room_id, user_id, membership):
         """
         Creates an m.room.member event, with context, without participating in the room.
 
@@ -390,14 +389,9 @@ class FederationClient(FederationBase):
             if destination == self.server_name:
                 continue
 
-            args = {}
-            if third_party_invites.join_has_third_party_invite(content):
-                args = third_party_invites.extract_join_keys(
-                    content["third_party_invite"]
-                )
             try:
                 ret = yield self.transport_layer.make_membership_event(
-                    destination, room_id, user_id, membership, args
+                    destination, room_id, user_id, membership
                 )
 
                 pdu_dict = ret["event"]
@@ -704,3 +698,26 @@ class FederationClient(FederationBase):
         event.internal_metadata.outlier = outlier
 
         return event
+
+    @defer.inlineCallbacks
+    def forward_third_party_invite(self, destinations, room_id, event_dict):
+        for destination in destinations:
+            if destination == self.server_name:
+                continue
+
+            try:
+                yield self.transport_layer.exchange_third_party_invite(
+                    destination=destination,
+                    room_id=room_id,
+                    event_dict=event_dict,
+                )
+                defer.returnValue(None)
+            except CodeMessageException:
+                raise
+            except Exception as e:
+                logger.exception(
+                    "Failed to send_third_party_invite via %s: %s",
+                    destination, e.message
+                )
+
+        raise RuntimeError("Failed to send to any server.")
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py
index 9e2d9ee74c..7a59436a91 100644
--- a/synapse/federation/federation_server.py
+++ b/synapse/federation/federation_server.py
@@ -23,12 +23,10 @@ from synapse.util.logutils import log_function
 from synapse.events import FrozenEvent
 import synapse.metrics
 
-from synapse.api.errors import FederationError, SynapseError, Codes
+from synapse.api.errors import FederationError, SynapseError
 
 from synapse.crypto.event_signing import compute_event_signature
 
-from synapse.util import third_party_invites
-
 import simplejson as json
 import logging
 
@@ -230,19 +228,8 @@ class FederationServer(FederationBase):
             )
 
     @defer.inlineCallbacks
-    def on_make_join_request(self, room_id, user_id, query):
-        threepid_details = {}
-        if third_party_invites.has_join_keys(query):
-            for k in third_party_invites.JOIN_KEYS:
-                if not isinstance(query[k], list) or len(query[k]) != 1:
-                    raise FederationError(
-                        "FATAL",
-                        Codes.MISSING_PARAM,
-                        "key %s value %s" % (k, query[k],),
-                        None
-                    )
-                threepid_details[k] = query[k][0]
-        pdu = yield self.handler.on_make_join_request(room_id, user_id, threepid_details)
+    def on_make_join_request(self, room_id, user_id):
+        pdu = yield self.handler.on_make_join_request(room_id, user_id)
         time_now = self._clock.time_msec()
         defer.returnValue({"event": pdu.get_pdu_json(time_now)})
 
@@ -556,3 +543,15 @@ class FederationServer(FederationBase):
         event.internal_metadata.outlier = outlier
 
         return event
+
+    @defer.inlineCallbacks
+    def exchange_third_party_invite(self, invite):
+        ret = yield self.handler.exchange_third_party_invite(invite)
+        defer.returnValue(ret)
+
+    @defer.inlineCallbacks
+    def on_exchange_third_party_invite_request(self, origin, room_id, event_dict):
+        ret = yield self.handler.on_exchange_third_party_invite_request(
+            origin, room_id, event_dict
+        )
+        defer.returnValue(ret)
diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index a81b3c4345..3d59e1c650 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -161,7 +161,7 @@ class TransportLayerClient(object):
 
     @defer.inlineCallbacks
     @log_function
-    def make_membership_event(self, destination, room_id, user_id, membership, args={}):
+    def make_membership_event(self, destination, room_id, user_id, membership):
         valid_memberships = {Membership.JOIN, Membership.LEAVE}
         if membership not in valid_memberships:
             raise RuntimeError(
@@ -173,7 +173,6 @@ class TransportLayerClient(object):
         content = yield self.client.get_json(
             destination=destination,
             path=path,
-            args=args,
             retry_on_dns_fail=True,
         )
 
@@ -220,6 +219,19 @@ class TransportLayerClient(object):
 
     @defer.inlineCallbacks
     @log_function
+    def exchange_third_party_invite(self, destination, room_id, event_dict):
+        path = PREFIX + "/exchange_third_party_invite/%s" % (room_id,)
+
+        response = yield self.client.put_json(
+            destination=destination,
+            path=path,
+            data=event_dict,
+        )
+
+        defer.returnValue(response)
+
+    @defer.inlineCallbacks
+    @log_function
     def get_event_auth(self, destination, room_id, event_id):
         path = PREFIX + "/event_auth/%s/%s" % (room_id, event_id)
 
diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index 8184159210..127b4da4f8 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -292,7 +292,7 @@ class FederationMakeJoinServlet(BaseFederationServlet):
 
     @defer.inlineCallbacks
     def on_GET(self, origin, content, query, context, user_id):
-        content = yield self.handler.on_make_join_request(context, user_id, query)
+        content = yield self.handler.on_make_join_request(context, user_id)
         defer.returnValue((200, content))
 
 
@@ -343,6 +343,17 @@ class FederationInviteServlet(BaseFederationServlet):
         defer.returnValue((200, content))
 
 
+class FederationThirdPartyInviteExchangeServlet(BaseFederationServlet):
+    PATH = "/exchange_third_party_invite/([^/]*)"
+
+    @defer.inlineCallbacks
+    def on_PUT(self, origin, content, query, room_id):
+        content = yield self.handler.on_exchange_third_party_invite_request(
+            origin, room_id, content
+        )
+        defer.returnValue((200, content))
+
+
 class FederationClientKeysQueryServlet(BaseFederationServlet):
     PATH = "/user/keys/query"
 
@@ -396,6 +407,30 @@ class FederationGetMissingEventsServlet(BaseFederationServlet):
         defer.returnValue((200, content))
 
 
+class On3pidBindServlet(BaseFederationServlet):
+    PATH = "/3pid/onbind"
+
+    @defer.inlineCallbacks
+    def on_POST(self, request):
+        content_bytes = request.content.read()
+        content = json.loads(content_bytes)
+        if "invites" in content:
+            last_exception = None
+            for invite in content["invites"]:
+                try:
+                    yield self.handler.exchange_third_party_invite(invite)
+                except Exception as e:
+                    last_exception = e
+            if last_exception:
+                raise last_exception
+        defer.returnValue((200, {}))
+
+    # Avoid doing remote HS authorization checks which are done by default by
+    # BaseFederationServlet.
+    def _wrap(self, code):
+        return code
+
+
 SERVLET_CLASSES = (
     FederationPullServlet,
     FederationEventServlet,
@@ -413,4 +448,6 @@ SERVLET_CLASSES = (
     FederationEventAuthServlet,
     FederationClientKeysQueryServlet,
     FederationClientKeysClaimServlet,
+    FederationThirdPartyInviteExchangeServlet,
+    On3pidBindServlet,
 )
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index 6873a4575d..eef325a94b 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -21,7 +21,6 @@ from synapse.api.constants import Membership, EventTypes
 from synapse.types import UserID, RoomAlias
 
 from synapse.util.logcontext import PreserveLoggingContext
-from synapse.util import third_party_invites
 
 import logging
 
@@ -47,7 +46,8 @@ class BaseHandler(object):
         self.event_builder_factory = hs.get_event_builder_factory()
 
     @defer.inlineCallbacks
-    def _filter_events_for_client(self, user_id, events, is_guest=False):
+    def _filter_events_for_client(self, user_id, events, is_guest=False,
+                                  require_all_visible_for_guests=True):
         # Assumes that user has at some point joined the room if not is_guest.
 
         def allowed(event, membership, visibility):
@@ -100,7 +100,9 @@ class BaseHandler(object):
             if should_include:
                 events_to_return.append(event)
 
-        if is_guest and len(events_to_return) < len(events):
+        if (require_all_visible_for_guests
+                and is_guest
+                and len(events_to_return) < len(events)):
             # This indicates that some events in the requested range were not
             # visible to guest users. To be safe, we reject the entire request,
             # so that we don't have to worry about interpreting visibility
@@ -189,16 +191,6 @@ class BaseHandler(object):
                         )
                     )
 
-        if (
-            event.type == EventTypes.Member and
-            event.content["membership"] == Membership.JOIN and
-            third_party_invites.join_has_third_party_invite(event.content)
-        ):
-            yield third_party_invites.check_key_valid(
-                self.hs.get_simple_http_client(),
-                event
-            )
-
         federation_handler = self.hs.get_handlers().federation_handler
 
         if event.type == EventTypes.Member:
diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py
index 53c8ca3a26..0e4c0d4d06 100644
--- a/synapse/handlers/events.py
+++ b/synapse/handlers/events.py
@@ -100,7 +100,7 @@ class EventStreamHandler(BaseHandler):
     @log_function
     def get_stream(self, auth_user_id, pagin_config, timeout=0,
                    as_client_event=True, affect_presence=True,
-                   only_room_events=False):
+                   only_room_events=False, room_id=None, is_guest=False):
         """Fetches the events stream for a given user.
 
         If `only_room_events` is `True` only room events will be returned.
@@ -119,9 +119,15 @@ class EventStreamHandler(BaseHandler):
                 # thundering herds on restart.
                 timeout = random.randint(int(timeout*0.9), int(timeout*1.1))
 
+            if is_guest:
+                yield self.distributor.fire(
+                    "user_joined_room", user=auth_user, room_id=room_id
+                )
+
             events, tokens = yield self.notifier.get_events_for(
                 auth_user, pagin_config, timeout,
-                only_room_events=only_room_events
+                only_room_events=only_room_events,
+                is_guest=is_guest, guest_room_id=room_id
             )
 
             time_now = self.clock.time_msec()
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index b2395b28d1..872051b8b9 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -21,6 +21,7 @@ from synapse.api.errors import (
     AuthError, FederationError, StoreError, CodeMessageException, SynapseError,
 )
 from synapse.api.constants import EventTypes, Membership, RejectedReason
+from synapse.events.validator import EventValidator
 from synapse.util import unwrapFirstError
 from synapse.util.logcontext import PreserveLoggingContext
 from synapse.util.logutils import log_function
@@ -39,7 +40,6 @@ from twisted.internet import defer
 
 import itertools
 import logging
-from synapse.util import third_party_invites
 
 logger = logging.getLogger(__name__)
 
@@ -58,6 +58,8 @@ class FederationHandler(BaseHandler):
     def __init__(self, hs):
         super(FederationHandler, self).__init__(hs)
 
+        self.hs = hs
+
         self.distributor.observe(
             "user_joined_room",
             self._on_user_joined
@@ -68,7 +70,6 @@ class FederationHandler(BaseHandler):
         self.store = hs.get_datastore()
         self.replication_layer = hs.get_replication_layer()
         self.state_handler = hs.get_state_handler()
-        # self.auth_handler = gs.get_auth_handler()
         self.server_name = hs.hostname
         self.keyring = hs.get_keyring()
 
@@ -563,7 +564,7 @@ class FederationHandler(BaseHandler):
 
     @log_function
     @defer.inlineCallbacks
-    def do_invite_join(self, target_hosts, room_id, joinee, content):
+    def do_invite_join(self, target_hosts, room_id, joinee):
         """ Attempts to join the `joinee` to the room `room_id` via the
         server `target_host`.
 
@@ -583,8 +584,7 @@ class FederationHandler(BaseHandler):
             target_hosts,
             room_id,
             joinee,
-            "join",
-            content
+            "join"
         )
 
         self.room_queues[room_id] = []
@@ -661,16 +661,12 @@ class FederationHandler(BaseHandler):
 
     @defer.inlineCallbacks
     @log_function
-    def on_make_join_request(self, room_id, user_id, query):
+    def on_make_join_request(self, room_id, user_id):
         """ We've received a /make_join/ request, so we create a partial
         join event for the room and return that. We do *not* persist or
         process it until the other server has signed it and sent it back.
         """
         event_content = {"membership": Membership.JOIN}
-        if third_party_invites.has_join_keys(query):
-            event_content["third_party_invite"] = (
-                third_party_invites.extract_join_keys(query)
-            )
 
         builder = self.event_builder_factory.new({
             "type": EventTypes.Member,
@@ -686,9 +682,6 @@ class FederationHandler(BaseHandler):
 
         self.auth.check(event, auth_events=context.current_state)
 
-        if third_party_invites.join_has_third_party_invite(event.content):
-            third_party_invites.check_key_valid(self.hs.get_simple_http_client(), event)
-
         defer.returnValue(event)
 
     @defer.inlineCallbacks
@@ -828,8 +821,7 @@ class FederationHandler(BaseHandler):
             target_hosts,
             room_id,
             user_id,
-            "leave",
-            {}
+            "leave"
         )
         signed_event = self._sign_event(event)
 
@@ -848,13 +840,12 @@ class FederationHandler(BaseHandler):
         defer.returnValue(None)
 
     @defer.inlineCallbacks
-    def _make_and_verify_event(self, target_hosts, room_id, user_id, membership, content):
+    def _make_and_verify_event(self, target_hosts, room_id, user_id, membership):
         origin, pdu = yield self.replication_layer.make_membership_event(
             target_hosts,
             room_id,
             user_id,
-            membership,
-            content
+            membership
         )
 
         logger.debug("Got response to make_%s: %s", membership, pdu)
@@ -1647,3 +1638,75 @@ class FederationHandler(BaseHandler):
             },
             "missing": [e.event_id for e in missing_locals],
         })
+
+    @defer.inlineCallbacks
+    @log_function
+    def exchange_third_party_invite(self, invite):
+        sender = invite["sender"]
+        room_id = invite["room_id"]
+
+        event_dict = {
+            "type": EventTypes.Member,
+            "content": {
+                "membership": Membership.INVITE,
+                "third_party_invite": invite,
+            },
+            "room_id": room_id,
+            "sender": sender,
+            "state_key": invite["mxid"],
+        }
+
+        if (yield self.auth.check_host_in_room(room_id, self.hs.hostname)):
+            builder = self.event_builder_factory.new(event_dict)
+            EventValidator().validate_new(builder)
+            event, context = yield self._create_new_client_event(builder=builder)
+            self.auth.check(event, context.current_state)
+            yield self._validate_keyserver(event, auth_events=context.current_state)
+            member_handler = self.hs.get_handlers().room_member_handler
+            yield member_handler.change_membership(event, context)
+        else:
+            destinations = set([x.split(":", 1)[-1] for x in (sender, room_id)])
+            yield self.replication_layer.forward_third_party_invite(
+                destinations,
+                room_id,
+                event_dict,
+            )
+
+    @defer.inlineCallbacks
+    @log_function
+    def on_exchange_third_party_invite_request(self, origin, room_id, event_dict):
+        builder = self.event_builder_factory.new(event_dict)
+
+        event, context = yield self._create_new_client_event(
+            builder=builder,
+        )
+
+        self.auth.check(event, auth_events=context.current_state)
+        yield self._validate_keyserver(event, auth_events=context.current_state)
+
+        returned_invite = yield self.send_invite(origin, event)
+        # TODO: Make sure the signatures actually are correct.
+        event.signatures.update(returned_invite.signatures)
+        member_handler = self.hs.get_handlers().room_member_handler
+        yield member_handler.change_membership(event, context)
+
+    @defer.inlineCallbacks
+    def _validate_keyserver(self, event, auth_events):
+        token = event.content["third_party_invite"]["signed"]["token"]
+
+        invite_event = auth_events.get(
+            (EventTypes.ThirdPartyInvite, token,)
+        )
+
+        try:
+            response = yield self.hs.get_simple_http_client().get_json(
+                invite_event.content["key_validity_url"],
+                {"public_key": invite_event.content["public_key"]}
+            )
+        except Exception:
+            raise SynapseError(
+                502,
+                "Third party certificate could not be checked"
+            )
+        if "valid" not in response or not response["valid"]:
+            raise AuthError(403, "Third party certificate was invalid")
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 687e1527f7..654ecd2b37 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -16,7 +16,7 @@
 from twisted.internet import defer
 
 from synapse.api.constants import EventTypes, Membership
-from synapse.api.errors import SynapseError
+from synapse.api.errors import SynapseError, AuthError, Codes
 from synapse.streams.config import PaginationConfig
 from synapse.events.utils import serialize_event
 from synapse.events.validator import EventValidator
@@ -229,7 +229,7 @@ class MessageHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def get_room_data(self, user_id=None, room_id=None,
-                      event_type=None, state_key=""):
+                      event_type=None, state_key="", is_guest=False):
         """ Get data from a room.
 
         Args:
@@ -239,23 +239,42 @@ class MessageHandler(BaseHandler):
         Raises:
             SynapseError if something went wrong.
         """
-        member_event = yield self.auth.check_user_was_in_room(room_id, user_id)
+        membership, membership_event_id = yield self._check_in_room_or_world_readable(
+            room_id, user_id, is_guest
+        )
 
-        if member_event.membership == Membership.JOIN:
+        if membership == Membership.JOIN:
             data = yield self.state_handler.get_current_state(
                 room_id, event_type, state_key
             )
-        elif member_event.membership == Membership.LEAVE:
+        elif membership == Membership.LEAVE:
             key = (event_type, state_key)
             room_state = yield self.store.get_state_for_events(
-                [member_event.event_id], [key]
+                [membership_event_id], [key]
             )
-            data = room_state[member_event.event_id].get(key)
+            data = room_state[membership_event_id].get(key)
 
         defer.returnValue(data)
 
     @defer.inlineCallbacks
-    def get_state_events(self, user_id, room_id):
+    def _check_in_room_or_world_readable(self, room_id, user_id, is_guest):
+        if is_guest:
+            visibility = yield self.state_handler.get_current_state(
+                room_id, EventTypes.RoomHistoryVisibility, ""
+            )
+            if visibility.content["history_visibility"] == "world_readable":
+                defer.returnValue((Membership.JOIN, None))
+                return
+            else:
+                raise AuthError(
+                    403, "Guest access not allowed", errcode=Codes.GUEST_ACCESS_FORBIDDEN
+                )
+        else:
+            member_event = yield self.auth.check_user_was_in_room(room_id, user_id)
+            defer.returnValue((member_event.membership, member_event.event_id))
+
+    @defer.inlineCallbacks
+    def get_state_events(self, user_id, room_id, is_guest=False):
         """Retrieve all state events for a given room. If the user is
         joined to the room then return the current state. If the user has
         left the room return the state events from when they left.
@@ -266,15 +285,17 @@ class MessageHandler(BaseHandler):
         Returns:
             A list of dicts representing state events. [{}, {}, {}]
         """
-        member_event = yield self.auth.check_user_was_in_room(room_id, user_id)
+        membership, membership_event_id = yield self._check_in_room_or_world_readable(
+            room_id, user_id, is_guest
+        )
 
-        if member_event.membership == Membership.JOIN:
+        if membership == Membership.JOIN:
             room_state = yield self.state_handler.get_current_state(room_id)
-        elif member_event.membership == Membership.LEAVE:
+        elif membership == Membership.LEAVE:
             room_state = yield self.store.get_state_for_events(
-                [member_event.event_id], None
+                [membership_event_id], None
             )
-            room_state = room_state[member_event.event_id]
+            room_state = room_state[membership_event_id]
 
         now = self.clock.time_msec()
         defer.returnValue(
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index ce60642127..0b780cd528 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -1142,8 +1142,9 @@ class PresenceEventSource(object):
 
     @defer.inlineCallbacks
     @log_function
-    def get_new_events_for_user(self, user, from_key, limit):
+    def get_new_events(self, user, from_key, room_ids=None, **kwargs):
         from_key = int(from_key)
+        room_ids = room_ids or []
 
         presence = self.hs.get_handlers().presence_handler
         cachemap = presence._user_cachemap
@@ -1161,7 +1162,6 @@ class PresenceEventSource(object):
             user_ids_to_check |= set(
                 UserID.from_string(p["observed_user_id"]) for p in presence_list
             )
-        room_ids = yield presence.get_joined_rooms_for_user(user)
         for room_id in set(room_ids) & set(presence._room_serials):
             if presence._room_serials[room_id] > from_key:
                 joined = yield presence.get_joined_users_for_room_id(room_id)
diff --git a/synapse/handlers/private_user_data.py b/synapse/handlers/private_user_data.py
index 1778c71325..1abe45ed7b 100644
--- a/synapse/handlers/private_user_data.py
+++ b/synapse/handlers/private_user_data.py
@@ -24,7 +24,7 @@ class PrivateUserDataEventSource(object):
         return self.store.get_max_private_user_data_stream_id()
 
     @defer.inlineCallbacks
-    def get_new_events_for_user(self, user, from_key, limit):
+    def get_new_events(self, user, from_key, **kwargs):
         user_id = user.to_string()
         last_stream_id = from_key
 
diff --git a/synapse/handlers/receipts.py b/synapse/handlers/receipts.py
index a47ae3df42..973f4d5cae 100644
--- a/synapse/handlers/receipts.py
+++ b/synapse/handlers/receipts.py
@@ -164,17 +164,15 @@ class ReceiptEventSource(object):
         self.store = hs.get_datastore()
 
     @defer.inlineCallbacks
-    def get_new_events_for_user(self, user, from_key, limit):
+    def get_new_events(self, from_key, room_ids, **kwargs):
         from_key = int(from_key)
         to_key = yield self.get_current_key()
 
         if from_key == to_key:
             defer.returnValue(([], to_key))
 
-        rooms = yield self.store.get_rooms_for_user(user.to_string())
-        rooms = [room.room_id for room in rooms]
         events = yield self.store.get_linearized_receipts_for_rooms(
-            rooms,
+            room_ids,
             from_key=from_key,
             to_key=to_key,
         )
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index 9184dcd048..8cce8d0e99 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -38,6 +38,8 @@ import string
 
 logger = logging.getLogger(__name__)
 
+id_server_scheme = "https://"
+
 
 class RoomCreationHandler(BaseHandler):
 
@@ -488,8 +490,7 @@ class RoomMemberHandler(BaseHandler):
             yield handler.do_invite_join(
                 room_hosts,
                 room_id,
-                event.user_id,
-                event.content  # FIXME To get a non-frozen dict
+                event.user_id
             )
         else:
             logger.debug("Doing normal join")
@@ -632,7 +633,7 @@ class RoomMemberHandler(BaseHandler):
         """
         try:
             data = yield self.hs.get_simple_http_client().get_json(
-                "https://%s/_matrix/identity/api/v1/lookup" % (id_server,),
+                "%s%s/_matrix/identity/api/v1/lookup" % (id_server_scheme, id_server,),
                 {
                     "medium": medium,
                     "address": address,
@@ -655,8 +656,8 @@ class RoomMemberHandler(BaseHandler):
             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(
-                "https://%s/_matrix/identity/api/v1/pubkey/%s" %
-                (server_hostname, key_name,),
+                "%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" %
@@ -709,7 +710,9 @@ class RoomMemberHandler(BaseHandler):
     @defer.inlineCallbacks
     def _ask_id_server_for_third_party_invite(
             self, id_server, medium, address, room_id, sender):
-        is_url = "https://%s/_matrix/identity/api/v1/store-invite" % (id_server,)
+        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,
             {
@@ -722,8 +725,8 @@ class RoomMemberHandler(BaseHandler):
         # TODO: Check for success
         token = data["token"]
         public_key = data["public_key"]
-        key_validity_url = "https://%s/_matrix/identity/api/v1/pubkey/isvalid" % (
-            id_server,
+        key_validity_url = "%s%s/_matrix/identity/api/v1/pubkey/isvalid" % (
+            id_server_scheme, id_server,
         )
         defer.returnValue((token, public_key, key_validity_url))
 
@@ -807,7 +810,14 @@ class RoomEventSource(object):
         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()
@@ -828,6 +838,8 @@ class RoomEventSource(object):
                 from_key=from_key,
                 to_key=to_key,
                 limit=limit,
+                room_ids=room_ids,
+                is_guest=is_guest,
             )
 
         defer.returnValue((events, end_key))
diff --git a/synapse/handlers/search.py b/synapse/handlers/search.py
index 2718e9482e..b7545c111f 100644
--- a/synapse/handlers/search.py
+++ b/synapse/handlers/search.py
@@ -22,6 +22,8 @@ from synapse.api.filtering import Filter
 from synapse.api.errors import SynapseError
 from synapse.events.utils import serialize_event
 
+from unpaddedbase64 import decode_base64, encode_base64
+
 import logging
 
 
@@ -34,27 +36,59 @@ class SearchHandler(BaseHandler):
         super(SearchHandler, self).__init__(hs)
 
     @defer.inlineCallbacks
-    def search(self, user, content):
+    def search(self, user, content, batch=None):
         """Performs a full text search for a user.
 
         Args:
             user (UserID)
             content (dict): Search parameters
+            batch (str): The next_batch parameter. Used for pagination.
 
         Returns:
             dict to be returned to the client with results of search
         """
 
+        batch_group = None
+        batch_group_key = None
+        batch_token = None
+        if batch:
+            try:
+                b = decode_base64(batch)
+                batch_group, batch_group_key, batch_token = b.split("\n")
+
+                assert batch_group is not None
+                assert batch_group_key is not None
+                assert batch_token is not None
+            except:
+                raise SynapseError(400, "Invalid batch")
+
         try:
-            search_term = content["search_categories"]["room_events"]["search_term"]
-            keys = content["search_categories"]["room_events"].get("keys", [
+            room_cat = content["search_categories"]["room_events"]
+
+            # The actual thing to query in FTS
+            search_term = room_cat["search_term"]
+
+            # Which "keys" to search over in FTS query
+            keys = room_cat.get("keys", [
                 "content.body", "content.name", "content.topic",
             ])
-            filter_dict = content["search_categories"]["room_events"].get("filter", {})
-            event_context = content["search_categories"]["room_events"].get(
+
+            # Filter to apply to results
+            filter_dict = room_cat.get("filter", {})
+
+            # What to order results by (impacts whether pagination can be doen)
+            order_by = room_cat.get("order_by", "rank")
+
+            # Include context around each event?
+            event_context = room_cat.get(
                 "event_context", None
             )
 
+            # Group results together? May allow clients to paginate within a
+            # group
+            group_by = room_cat.get("groupings", {}).get("group_by", {})
+            group_keys = [g["key"] for g in group_by]
+
             if event_context is not None:
                 before_limit = int(event_context.get(
                     "before_limit", 5
@@ -65,6 +99,15 @@ class SearchHandler(BaseHandler):
         except KeyError:
             raise SynapseError(400, "Invalid search query")
 
+        if order_by not in ("rank", "recent"):
+            raise SynapseError(400, "Invalid order by: %r" % (order_by,))
+
+        if set(group_keys) - {"room_id", "sender"}:
+            raise SynapseError(
+                400,
+                "Invalid group by keys: %r" % (set(group_keys) - {"room_id", "sender"},)
+            )
+
         search_filter = Filter(filter_dict)
 
         # TODO: Search through left rooms too
@@ -77,19 +120,130 @@ class SearchHandler(BaseHandler):
 
         room_ids = search_filter.filter_rooms(room_ids)
 
-        rank_map, event_map, _ = yield self.store.search_msgs(
-            room_ids, search_term, keys
-        )
+        if batch_group == "room_id":
+            room_ids.intersection_update({batch_group_key})
 
-        filtered_events = search_filter.filter(event_map.values())
+        rank_map = {}  # event_id -> rank of event
+        allowed_events = []
+        room_groups = {}  # Holds result of grouping by room, if applicable
+        sender_group = {}  # Holds result of grouping by sender, if applicable
 
-        allowed_events = yield self._filter_events_for_client(
-            user.to_string(), filtered_events
-        )
+        # Holds the next_batch for the entire result set if one of those exists
+        global_next_batch = None
 
-        allowed_events.sort(key=lambda e: -rank_map[e.event_id])
-        allowed_events = allowed_events[:search_filter.limit()]
+        if order_by == "rank":
+            results = yield self.store.search_msgs(
+                room_ids, search_term, keys
+            )
+
+            results_map = {r["event"].event_id: r for r in results}
+
+            rank_map.update({r["event"].event_id: r["rank"] for r in results})
+
+            filtered_events = search_filter.filter([r["event"] for r in results])
+
+            events = yield self._filter_events_for_client(
+                user.to_string(), filtered_events
+            )
+
+            events.sort(key=lambda e: -rank_map[e.event_id])
+            allowed_events = events[:search_filter.limit()]
+
+            for e in allowed_events:
+                rm = room_groups.setdefault(e.room_id, {
+                    "results": [],
+                    "order": rank_map[e.event_id],
+                })
+                rm["results"].append(e.event_id)
+
+                s = sender_group.setdefault(e.sender, {
+                    "results": [],
+                    "order": rank_map[e.event_id],
+                })
+                s["results"].append(e.event_id)
+
+        elif order_by == "recent":
+            # In this case we specifically loop through each room as the given
+            # limit applies to each room, rather than a global list.
+            # This is not necessarilly a good idea.
+            for room_id in room_ids:
+                room_events = []
+                if batch_group == "room_id" and batch_group_key == room_id:
+                    pagination_token = batch_token
+                else:
+                    pagination_token = None
+                i = 0
+
+                # We keep looping and we keep filtering until we reach the limit
+                # or we run out of things.
+                # But only go around 5 times since otherwise synapse will be sad.
+                while len(room_events) < search_filter.limit() and i < 5:
+                    i += 1
+                    results = yield self.store.search_room(
+                        room_id, search_term, keys, search_filter.limit() * 2,
+                        pagination_token=pagination_token,
+                    )
+
+                    results_map = {r["event"].event_id: r for r in results}
+
+                    rank_map.update({r["event"].event_id: r["rank"] for r in results})
+
+                    filtered_events = search_filter.filter([
+                        r["event"] for r in results
+                    ])
+
+                    events = yield self._filter_events_for_client(
+                        user.to_string(), filtered_events
+                    )
+
+                    room_events.extend(events)
+                    room_events = room_events[:search_filter.limit()]
+
+                    if len(results) < search_filter.limit() * 2:
+                        pagination_token = None
+                        break
+                    else:
+                        pagination_token = results[-1]["pagination_token"]
+
+                if room_events:
+                    res = results_map[room_events[-1].event_id]
+                    pagination_token = res["pagination_token"]
+
+                    group = room_groups.setdefault(room_id, {})
+                    if pagination_token:
+                        next_batch = encode_base64("%s\n%s\n%s" % (
+                            "room_id", room_id, pagination_token
+                        ))
+                        group["next_batch"] = next_batch
+
+                        if batch_token:
+                            global_next_batch = next_batch
+
+                    group["results"] = [e.event_id for e in room_events]
+                    group["order"] = max(
+                        e.origin_server_ts/1000 for e in room_events
+                        if hasattr(e, "origin_server_ts")
+                    )
+
+                allowed_events.extend(room_events)
+
+            # Normalize the group orders
+            if room_groups:
+                if len(room_groups) > 1:
+                    mx = max(g["order"] for g in room_groups.values())
+                    mn = min(g["order"] for g in room_groups.values())
+
+                    for g in room_groups.values():
+                        g["order"] = (g["order"] - mn) * 1.0 / (mx - mn)
+                else:
+                    room_groups.values()[0]["order"] = 1
 
+        else:
+            # We should never get here due to the guard earlier.
+            raise NotImplementedError()
+
+        # If client has asked for "context" for each event (i.e. some surrounding
+        # events and state), fetch that
         if event_context is not None:
             now_token = yield self.hs.get_event_sources().get_current_token()
 
@@ -144,11 +298,22 @@ class SearchHandler(BaseHandler):
 
         logger.info("Found %d results", len(results))
 
+        rooms_cat_res = {
+            "results": results,
+            "count": len(results)
+        }
+
+        if room_groups and "room_id" in group_keys:
+            rooms_cat_res.setdefault("groups", {})["room_id"] = room_groups
+
+        if sender_group and "sender" in group_keys:
+            rooms_cat_res.setdefault("groups", {})["sender"] = sender_group
+
+        if global_next_batch:
+            rooms_cat_res["next_batch"] = global_next_batch
+
         defer.returnValue({
             "search_categories": {
-                "room_events": {
-                    "results": results,
-                    "count": len(results)
-                }
+                "room_events": rooms_cat_res
             }
         })
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 1c1ee34b1e..5294d96466 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -295,11 +295,16 @@ class SyncHandler(BaseHandler):
 
         typing_key = since_token.typing_key if since_token else "0"
 
+        rooms = yield self.store.get_rooms_for_user(sync_config.user.to_string())
+        room_ids = [room.room_id for room in rooms]
+
         typing_source = self.event_sources.sources["typing"]
-        typing, typing_key = yield typing_source.get_new_events_for_user(
+        typing, typing_key = yield typing_source.get_new_events(
             user=sync_config.user,
             from_key=typing_key,
             limit=sync_config.filter.ephemeral_limit(),
+            room_ids=room_ids,
+            is_guest=False,
         )
         now_token = now_token.copy_and_replace("typing_key", typing_key)
 
@@ -312,10 +317,13 @@ class SyncHandler(BaseHandler):
         receipt_key = since_token.receipt_key if since_token else "0"
 
         receipt_source = self.event_sources.sources["receipt"]
-        receipts, receipt_key = yield receipt_source.get_new_events_for_user(
+        receipts, receipt_key = yield receipt_source.get_new_events(
             user=sync_config.user,
             from_key=receipt_key,
             limit=sync_config.filter.ephemeral_limit(),
+            room_ids=room_ids,
+            # /sync doesn't support guest access, they can't get to this point in code
+            is_guest=False,
         )
         now_token = now_token.copy_and_replace("receipt_key", receipt_key)
 
@@ -360,11 +368,17 @@ 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]
+
         presence_source = self.event_sources.sources["presence"]
-        presence, presence_key = yield presence_source.get_new_events_for_user(
+        presence, presence_key = yield presence_source.get_new_events(
             user=sync_config.user,
             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,
         )
         now_token = now_token.copy_and_replace("presence_key", presence_key)
 
diff --git a/synapse/handlers/typing.py b/synapse/handlers/typing.py
index d7096aab8c..2846f3e6e8 100644
--- a/synapse/handlers/typing.py
+++ b/synapse/handlers/typing.py
@@ -246,17 +246,12 @@ class TypingNotificationEventSource(object):
             },
         }
 
-    @defer.inlineCallbacks
-    def get_new_events_for_user(self, user, from_key, limit):
+    def get_new_events(self, from_key, room_ids, **kwargs):
         from_key = int(from_key)
         handler = self.handler()
 
-        joined_room_ids = (
-            yield self.room_member_handler().get_joined_rooms_for_user(user)
-        )
-
         events = []
-        for room_id in joined_room_ids:
+        for room_id in room_ids:
             if room_id not in handler._room_serials:
                 continue
             if handler._room_serials[room_id] <= from_key:
@@ -264,7 +259,7 @@ class TypingNotificationEventSource(object):
 
             events.append(self._make_event_for(room_id))
 
-        defer.returnValue((events, handler._latest_room_serial))
+        return events, handler._latest_room_serial
 
     def get_current_key(self):
         return self.handler()._latest_room_serial
diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py
index b50a0c445c..6e53538a52 100644
--- a/synapse/http/matrixfederationclient.py
+++ b/synapse/http/matrixfederationclient.py
@@ -35,6 +35,7 @@ from signedjson.sign import sign_json
 
 import simplejson as json
 import logging
+import random
 import sys
 import urllib
 import urlparse
@@ -55,6 +56,9 @@ incoming_responses_counter = metrics.register_counter(
 )
 
 
+MAX_RETRIES = 4
+
+
 class MatrixFederationEndpointFactory(object):
     def __init__(self, hs):
         self.tls_server_context_factory = hs.tls_server_context_factory
@@ -119,7 +123,7 @@ class MatrixFederationHttpClient(object):
 
         # XXX: Would be much nicer to retry only at the transaction-layer
         # (once we have reliable transactions in place)
-        retries_left = 5
+        retries_left = MAX_RETRIES
 
         http_url_bytes = urlparse.urlunparse(
             ("", "", path_bytes, param_bytes, query_bytes, "")
@@ -180,7 +184,9 @@ class MatrixFederationHttpClient(object):
                     )
 
                     if retries_left and not timeout:
-                        yield sleep(2 ** (5 - retries_left))
+                        delay = 5 ** (MAX_RETRIES + 1 - retries_left)
+                        delay *= random.uniform(0.8, 1.4)
+                        yield sleep(delay)
                         retries_left -= 1
                     else:
                         raise
diff --git a/synapse/notifier.py b/synapse/notifier.py
index b69da63d43..56c4c863b5 100644
--- a/synapse/notifier.py
+++ b/synapse/notifier.py
@@ -269,7 +269,7 @@ class Notifier(object):
                 logger.exception("Failed to notify listener")
 
     @defer.inlineCallbacks
-    def wait_for_events(self, user, timeout, callback,
+    def wait_for_events(self, user, timeout, callback, room_ids=None,
                         from_token=StreamToken("s0", "0", "0", "0", "0")):
         """Wait until the callback returns a non empty response or the
         timeout fires.
@@ -279,11 +279,12 @@ class Notifier(object):
         if user_stream is None:
             appservice = yield self.store.get_app_service_by_user_id(user)
             current_token = yield self.event_sources.get_current_token()
-            rooms = yield self.store.get_rooms_for_user(user)
-            rooms = [room.room_id for room in rooms]
+            if room_ids is None:
+                rooms = yield self.store.get_rooms_for_user(user)
+                room_ids = [room.room_id for room in rooms]
             user_stream = _NotifierUserStream(
                 user=user,
-                rooms=rooms,
+                rooms=room_ids,
                 appservice=appservice,
                 current_token=current_token,
                 time_now_ms=self.clock.time_msec(),
@@ -329,7 +330,8 @@ class Notifier(object):
 
     @defer.inlineCallbacks
     def get_events_for(self, user, pagination_config, timeout,
-                       only_room_events=False):
+                       only_room_events=False,
+                       is_guest=False, guest_room_id=None):
         """ For the given user and rooms, return any new events for them. If
         there are no new events wait for up to `timeout` milliseconds for any
         new events to happen before returning.
@@ -342,6 +344,16 @@ class Notifier(object):
 
         limit = pagination_config.limit
 
+        room_ids = []
+        if is_guest:
+            # TODO(daniel): Deal with non-room events too
+            only_room_events = True
+            if guest_room_id:
+                room_ids = [guest_room_id]
+        else:
+            rooms = yield self.store.get_rooms_for_user(user.to_string())
+            room_ids = [room.room_id for room in rooms]
+
         @defer.inlineCallbacks
         def check_for_updates(before_token, after_token):
             if not after_token.is_after(before_token):
@@ -357,9 +369,23 @@ class Notifier(object):
                     continue
                 if only_room_events and name != "room":
                     continue
-                new_events, new_key = yield source.get_new_events_for_user(
-                    user, getattr(from_token, keyname), limit,
+                new_events, new_key = yield source.get_new_events(
+                    user=user,
+                    from_key=getattr(from_token, keyname),
+                    limit=limit,
+                    is_guest=is_guest,
+                    room_ids=room_ids,
                 )
+
+                if is_guest:
+                    room_member_handler = self.hs.get_handlers().room_member_handler
+                    new_events = yield room_member_handler._filter_events_for_client(
+                        user.to_string(),
+                        new_events,
+                        is_guest=is_guest,
+                        require_all_visible_for_guests=False
+                    )
+
                 events.extend(new_events)
                 end_token = end_token.copy_and_replace(keyname, new_key)
 
@@ -369,7 +395,7 @@ class Notifier(object):
                 defer.returnValue(None)
 
         result = yield self.wait_for_events(
-            user, timeout, check_for_updates, from_token=from_token
+            user, timeout, check_for_updates, room_ids=room_ids, from_token=from_token
         )
 
         if result is None:
diff --git a/synapse/rest/client/v1/events.py b/synapse/rest/client/v1/events.py
index 4073b0d2d1..3e1750d1a1 100644
--- a/synapse/rest/client/v1/events.py
+++ b/synapse/rest/client/v1/events.py
@@ -34,7 +34,15 @@ class EventStreamRestServlet(ClientV1RestServlet):
 
     @defer.inlineCallbacks
     def on_GET(self, request):
-        auth_user, _, _ = yield self.auth.get_user_by_req(request)
+        auth_user, _, is_guest = yield self.auth.get_user_by_req(
+            request,
+            allow_guest=True
+        )
+        room_id = None
+        if is_guest:
+            if "room_id" not in request.args:
+                raise SynapseError(400, "Guest users must specify room_id param")
+            room_id = request.args["room_id"][0]
         try:
             handler = self.handlers.event_stream_handler
             pagin_config = PaginationConfig.from_request(request)
@@ -49,7 +57,8 @@ class EventStreamRestServlet(ClientV1RestServlet):
 
             chunk = yield handler.get_stream(
                 auth_user.to_string(), pagin_config, timeout=timeout,
-                as_client_event=as_client_event
+                as_client_event=as_client_event, affect_presence=(not is_guest),
+                room_id=room_id, is_guest=is_guest
             )
         except:
             logger.exception("Event stream failed")
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 0876e593c5..6e0d93766b 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -26,7 +26,6 @@ from synapse.events.utils import serialize_event
 import simplejson as json
 import logging
 import urllib
-from synapse.util import third_party_invites
 
 logger = logging.getLogger(__name__)
 
@@ -125,7 +124,7 @@ class RoomStateEventRestServlet(ClientV1RestServlet):
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id, event_type, state_key):
-        user, _, _ = yield self.auth.get_user_by_req(request)
+        user, _, is_guest = yield self.auth.get_user_by_req(request, allow_guest=True)
 
         msg_handler = self.handlers.message_handler
         data = yield msg_handler.get_room_data(
@@ -133,6 +132,7 @@ class RoomStateEventRestServlet(ClientV1RestServlet):
             room_id=room_id,
             event_type=event_type,
             state_key=state_key,
+            is_guest=is_guest,
         )
 
         if not data:
@@ -348,12 +348,13 @@ class RoomStateRestServlet(ClientV1RestServlet):
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
-        user, _, _ = yield self.auth.get_user_by_req(request)
+        user, _, is_guest = yield self.auth.get_user_by_req(request, allow_guest=True)
         handler = self.handlers.message_handler
         # Get all the current state for this room
         events = yield handler.get_state_events(
             room_id=room_id,
             user_id=user.to_string(),
+            is_guest=is_guest,
         )
         defer.returnValue((200, events))
 
@@ -451,7 +452,7 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
         # target user is you unless it is an invite
         state_key = user.to_string()
 
-        if membership_action == "invite" and third_party_invites.has_invite_keys(content):
+        if membership_action == "invite" and self._has_3pid_invite_keys(content):
             yield self.handlers.room_member_handler.do_3pid_invite(
                 room_id,
                 user,
@@ -478,19 +479,10 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
 
         msg_handler = self.handlers.message_handler
 
-        event_content = {
-            "membership": unicode(membership_action),
-        }
-
-        if membership_action == "join" and third_party_invites.has_join_keys(content):
-            event_content["third_party_invite"] = (
-                third_party_invites.extract_join_keys(content)
-            )
-
         yield msg_handler.create_and_send_event(
             {
                 "type": EventTypes.Member,
-                "content": event_content,
+                "content": {"membership": unicode(membership_action)},
                 "room_id": room_id,
                 "sender": user.to_string(),
                 "state_key": state_key,
@@ -501,6 +493,12 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
 
         defer.returnValue((200, {}))
 
+    def _has_3pid_invite_keys(self, content):
+        for key in {"id_server", "medium", "address", "display_name"}:
+            if key not in content:
+                return False
+        return True
+
     @defer.inlineCallbacks
     def on_PUT(self, request, room_id, membership_action, txn_id):
         try:
@@ -602,7 +600,8 @@ class SearchRestServlet(ClientV1RestServlet):
 
         content = _parse_json(request)
 
-        results = yield self.handlers.search_handler.search(auth_user, content)
+        batch = request.args.get("next_batch", [None])[0]
+        results = yield self.handlers.search_handler.search(auth_user, content, batch)
 
         defer.returnValue((200, results))
 
diff --git a/synapse/static/client/login/index.html b/synapse/static/client/login/index.html
new file mode 100644
index 0000000000..96c8723cab
--- /dev/null
+++ b/synapse/static/client/login/index.html
@@ -0,0 +1,50 @@
+<html>
+<head>
+<title> Login </title>
+<meta name='viewport' content='width=device-width, initial-scale=1, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0'>
+<link rel="stylesheet" href="style.css">
+<script src="js/jquery-2.1.3.min.js"></script>
+<script src="js/login.js"></script>
+</head>
+<body onload="matrixLogin.onLoad()">
+    <center>
+        <br/>
+        <h1>Log in with one of the following methods</h1>
+
+        <span id="feedback" style="color: #f00"></span>
+        <br/>
+        <br/>
+
+        <div id="loading">
+            <img src="spinner.gif" />
+        </div>
+
+        <div id="cas_flow" class="login_flow" style="display:none"
+                onclick="gotoCas(); return false;">
+            CAS Authentication: <button id="cas_button" style="margin: 10px">Log in</button>
+        </div>
+
+        <br/>
+
+        <form id="password_form" class="login_flow" style="display:none"
+                onsubmit="matrixLogin.password_login(); return false;">
+            <div>
+                Password Authentication:<br/>
+
+                <div style="text-align: center">
+                    <input id="user_id" size="32" type="text" placeholder="Matrix ID (e.g. bob)" autocapitalize="off" autocorrect="off" />
+                    <br/>
+                    <input id="password" size="32" type="password" placeholder="Password"/>
+                    <br/>
+
+                    <button type="submit" style="margin: 10px">Log in</button>
+                </div>
+            </div>
+        </form>
+
+        <div id="no_login_types" type="button" class="login_flow" style="display:none">
+            Log in currently unavailable.
+        </div>
+    </center>
+</body>
+</html>
diff --git a/static/client/register/js/jquery-2.1.3.min.js b/synapse/static/client/login/js/jquery-2.1.3.min.js
index 25714ed29a..25714ed29a 100644
--- a/static/client/register/js/jquery-2.1.3.min.js
+++ b/synapse/static/client/login/js/jquery-2.1.3.min.js
diff --git a/synapse/static/client/login/js/login.js b/synapse/static/client/login/js/login.js
new file mode 100644
index 0000000000..ab8b4d44ea
--- /dev/null
+++ b/synapse/static/client/login/js/login.js
@@ -0,0 +1,167 @@
+window.matrixLogin = {
+    endpoint: location.origin + "/_matrix/client/api/v1/login",
+    serverAcceptsPassword: false,
+    serverAcceptsCas: false
+};
+
+var submitPassword = function(user, pwd) {
+    console.log("Logging in with password...");
+    var data = {
+        type: "m.login.password",
+        user: user,
+        password: pwd,
+    };
+    $.post(matrixLogin.endpoint, JSON.stringify(data), function(response) {
+        show_login();
+        matrixLogin.onLogin(response);
+    }).error(errorFunc);
+};
+
+var submitCas = function(ticket, service) {
+    console.log("Logging in with cas...");
+    var data = {
+        type: "m.login.cas",
+        ticket: ticket,
+        service: service,
+    };
+    $.post(matrixLogin.endpoint, JSON.stringify(data), function(response) {
+        show_login();
+        matrixLogin.onLogin(response);
+    }).error(errorFunc);
+};
+
+var errorFunc = function(err) {
+    show_login();
+
+    if (err.responseJSON && err.responseJSON.error) {
+        setFeedbackString(err.responseJSON.error + " (" + err.responseJSON.errcode + ")");
+    }
+    else {
+        setFeedbackString("Request failed: " + err.status);
+    }
+};
+
+var getCasURL = function(cb) {
+    $.get(matrixLogin.endpoint + "/cas", function(response) {
+        var cas_url = response.serverUrl;
+
+        cb(cas_url);
+    }).error(errorFunc);
+};
+
+
+var gotoCas = function() {
+    getCasURL(function(cas_url) {
+        var this_page = window.location.origin + window.location.pathname;
+
+        var redirect_url = cas_url + "/login?service=" + encodeURIComponent(this_page);
+
+        window.location.replace(redirect_url);
+    });
+}
+
+var setFeedbackString = function(text) {
+    $("#feedback").text(text);
+};
+
+var show_login = function() {
+    $("#loading").hide();
+
+    if (matrixLogin.serverAcceptsPassword) {
+        $("#password_form").show();
+    }
+
+    if (matrixLogin.serverAcceptsCas) {
+        $("#cas_flow").show();
+    }
+
+    if (!matrixLogin.serverAcceptsPassword && !matrixLogin.serverAcceptsCas) {
+        $("#no_login_types").show();
+    }
+};
+
+var show_spinner = function() {
+    $("#password_form").hide();
+    $("#cas_flow").hide();
+    $("#no_login_types").hide();
+    $("#loading").show();
+};
+
+
+var fetch_info = function(cb) {
+    $.get(matrixLogin.endpoint, function(response) {
+        var serverAcceptsPassword = false;
+        var serverAcceptsCas = false;
+        for (var i=0; i<response.flows.length; i++) {
+            var flow = response.flows[i];
+            if ("m.login.cas" === flow.type) {
+                matrixLogin.serverAcceptsCas = true;
+                console.log("Server accepts CAS");
+            }
+
+            if ("m.login.password" === flow.type) {
+                matrixLogin.serverAcceptsPassword = true;
+                console.log("Server accepts password");
+            }
+        }
+
+        cb();
+    }).error(errorFunc);
+}
+
+matrixLogin.onLoad = function() {
+    fetch_info(function() {
+        if (!try_cas()) {
+            show_login();
+        }
+    });
+};
+
+matrixLogin.password_login = function() {
+    var user = $("#user_id").val();
+    var pwd = $("#password").val();
+
+    setFeedbackString("");
+
+    show_spinner();
+    submitPassword(user, pwd);
+};
+
+matrixLogin.onLogin = function(response) {
+    // clobber this function
+    console.log("onLogin - This function should be replaced to proceed.");
+    console.log(response);
+};
+
+var parseQsFromUrl = function(query) {
+    var result = {};
+    query.split("&").forEach(function(part) {
+        var item = part.split("=");
+        var key = item[0];
+        var val = item[1];
+
+        if (val) {
+            val = decodeURIComponent(val);
+        }
+        result[key] = val
+    });
+    return result;
+};
+
+var try_cas = function() {
+    var pos = window.location.href.indexOf("?");
+    if (pos == -1) {
+        return false;
+    }
+    var qs = parseQsFromUrl(window.location.href.substr(pos+1));
+
+    var ticket = qs.ticket;
+
+    if (!ticket) {
+        return false;
+    }
+
+    submitCas(ticket, location.origin);
+
+    return true;
+};
diff --git a/synapse/static/client/login/spinner.gif b/synapse/static/client/login/spinner.gif
new file mode 100644
index 0000000000..12c24df798
--- /dev/null
+++ b/synapse/static/client/login/spinner.gif
Binary files differdiff --git a/synapse/static/client/login/style.css b/synapse/static/client/login/style.css
new file mode 100644
index 0000000000..73da0b5117
--- /dev/null
+++ b/synapse/static/client/login/style.css
@@ -0,0 +1,57 @@
+html {
+    height: 100%;
+}
+
+body {
+    height: 100%;
+    font-family: "Myriad Pro", "Myriad", Helvetica, Arial, sans-serif;
+    font-size: 12pt;
+    margin: 0px;
+}
+
+h1 {
+    font-size: 20pt;
+}
+
+a:link    { color: #666; }
+a:visited { color: #666; }
+a:hover   { color: #000; }
+a:active  { color: #000; }
+
+input {
+   width: 90%
+}
+
+textarea, input {
+   font-family: inherit;
+   font-size: inherit;
+   margin: 5px;
+}
+
+.smallPrint {
+    color: #888;
+    font-size: 9pt ! important;
+    font-style: italic ! important;
+}
+
+.g-recaptcha div {
+    margin: auto;
+}
+
+.login_flow {
+    text-align: left;
+    padding: 10px;
+    margin-bottom: 40px;
+    display: inline-block;
+
+    -webkit-border-radius: 10px;
+    -moz-border-radius: 10px;
+    border-radius: 10px;
+
+    -webkit-box-shadow: 0px 0px 20px 0px rgba(0,0,0,0.15);
+    -moz-box-shadow: 0px 0px 20px 0px rgba(0,0,0,0.15);
+    box-shadow: 0px 0px 20px 0px rgba(0,0,0,0.15);
+
+    background-color: #f8f8f8;
+    border: 1px #ccc solid;
+}
diff --git a/static/client/register/index.html b/synapse/static/client/register/index.html
index 600b3ee41e..600b3ee41e 100644
--- a/static/client/register/index.html
+++ b/synapse/static/client/register/index.html
diff --git a/synapse/static/client/register/js/jquery-2.1.3.min.js b/synapse/static/client/register/js/jquery-2.1.3.min.js
new file mode 100644
index 0000000000..25714ed29a
--- /dev/null
+++ b/synapse/static/client/register/js/jquery-2.1.3.min.js
@@ -0,0 +1,4 @@
+/*! jQuery v2.1.3 | (c) 2005, 2014 jQuery Foundation, Inc. | jquery.org/license */
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diff --git a/static/client/register/js/recaptcha_ajax.js b/synapse/static/client/register/js/recaptcha_ajax.js
index d0e71e5b88..d0e71e5b88 100644
--- a/static/client/register/js/recaptcha_ajax.js
+++ b/synapse/static/client/register/js/recaptcha_ajax.js
diff --git a/static/client/register/js/register.js b/synapse/static/client/register/js/register.js
index b62763a293..b62763a293 100644
--- a/static/client/register/js/register.js
+++ b/synapse/static/client/register/js/register.js
diff --git a/static/client/register/register_config.sample.js b/synapse/static/client/register/register_config.sample.js
index c7ea180dee..c7ea180dee 100644
--- a/static/client/register/register_config.sample.js
+++ b/synapse/static/client/register/register_config.sample.js
diff --git a/static/client/register/style.css b/synapse/static/client/register/style.css
index 5a7b6eebf2..5a7b6eebf2 100644
--- a/static/client/register/style.css
+++ b/synapse/static/client/register/style.css
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index e6c1abfc27..59c9987202 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -311,6 +311,8 @@ class EventsStore(SQLBaseStore):
                 self._store_room_message_txn(txn, event)
             elif event.type == EventTypes.Redaction:
                 self._store_redaction(txn, event)
+            elif event.type == EventTypes.RoomHistoryVisibility:
+                self._store_history_visibility_txn(txn, event)
 
         self._store_room_members_txn(
             txn,
diff --git a/synapse/storage/room.py b/synapse/storage/room.py
index 13441fcdce..1c79626736 100644
--- a/synapse/storage/room.py
+++ b/synapse/storage/room.py
@@ -202,6 +202,19 @@ class RoomStore(SQLBaseStore):
                 txn, event, "content.body", event.content["body"]
             )
 
+    def _store_history_visibility_txn(self, txn, event):
+        if hasattr(event, "content") and "history_visibility" in event.content:
+            sql = (
+                "INSERT INTO history_visibility"
+                " (event_id, room_id, history_visibility)"
+                " VALUES (?, ?, ?)"
+            )
+            txn.execute(sql, (
+                event.event_id,
+                event.room_id,
+                event.content["history_visibility"]
+            ))
+
     def _store_event_search_txn(self, txn, event, key, value):
         if isinstance(self.database_engine, PostgresEngine):
             sql = (
diff --git a/synapse/storage/schema/delta/25/history_visibility.sql b/synapse/storage/schema/delta/25/history_visibility.sql
new file mode 100644
index 0000000000..9f387ed69f
--- /dev/null
+++ b/synapse/storage/schema/delta/25/history_visibility.sql
@@ -0,0 +1,26 @@
+/* Copyright 2015 OpenMarket Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * This is a manual index of history_visibility content of state events,
+ * so that we can join on them in SELECT statements.
+ */
+CREATE TABLE IF NOT EXISTS history_visibility(
+    id INTEGER PRIMARY KEY,
+    event_id TEXT NOT NULL,
+    room_id TEXT NOT NULL,
+    history_visibility TEXT NOT NULL,
+    UNIQUE (event_id)
+);
diff --git a/synapse/storage/search.py b/synapse/storage/search.py
index cdf003502f..3cea2011fa 100644
--- a/synapse/storage/search.py
+++ b/synapse/storage/search.py
@@ -16,18 +16,13 @@
 from twisted.internet import defer
 
 from _base import SQLBaseStore
+from synapse.api.errors import SynapseError
 from synapse.storage.engines import PostgresEngine, Sqlite3Engine
 
-from collections import namedtuple
+import logging
 
-"""The result of a search.
 
-Fields:
-    rank_map (dict): Mapping event_id -> rank
-    event_map (dict): Mapping event_id -> event
-    pagination_token (str): Pagination token
-"""
-SearchResult = namedtuple("SearchResult", ("rank_map", "event_map", "pagination_token"))
+logger = logging.getLogger(__name__)
 
 
 class SearchStore(SQLBaseStore):
@@ -42,7 +37,7 @@ class SearchStore(SQLBaseStore):
                 "content.body", "content.name", "content.topic"
 
         Returns:
-            SearchResult
+            list of dicts
         """
         clauses = []
         args = []
@@ -100,12 +95,103 @@ class SearchStore(SQLBaseStore):
             for ev in events
         }
 
-        defer.returnValue(SearchResult(
+        defer.returnValue([
             {
-                r["event_id"]: r["rank"]
-                for r in results
-                if r["event_id"] in event_map
-            },
-            event_map,
-            None
-        ))
+                "event": event_map[r["event_id"]],
+                "rank": r["rank"],
+            }
+            for r in results
+            if r["event_id"] in event_map
+        ])
+
+    @defer.inlineCallbacks
+    def search_room(self, room_id, search_term, keys, limit, pagination_token=None):
+        """Performs a full text search over events with given keys.
+
+        Args:
+            room_id (str): The room_id to search in
+            search_term (str): Search term to search for
+            keys (list): List of keys to search in, currently supports
+                "content.body", "content.name", "content.topic"
+            pagination_token (str): A pagination token previously returned
+
+        Returns:
+            list of dicts
+        """
+        clauses = []
+        args = [search_term, room_id]
+
+        local_clauses = []
+        for key in keys:
+            local_clauses.append("key = ?")
+            args.append(key)
+
+        clauses.append(
+            "(%s)" % (" OR ".join(local_clauses),)
+        )
+
+        if pagination_token:
+            try:
+                topo, stream = pagination_token.split(",")
+                topo = int(topo)
+                stream = int(stream)
+            except:
+                raise SynapseError(400, "Invalid pagination token")
+
+            clauses.append(
+                "(topological_ordering < ?"
+                " OR (topological_ordering = ? AND stream_ordering < ?))"
+            )
+            args.extend([topo, topo, stream])
+
+        if isinstance(self.database_engine, PostgresEngine):
+            sql = (
+                "SELECT ts_rank_cd(vector, query) as rank,"
+                " topological_ordering, stream_ordering, room_id, event_id"
+                " FROM plainto_tsquery('english', ?) as query, event_search"
+                " NATURAL JOIN events"
+                " WHERE vector @@ query AND room_id = ?"
+            )
+        elif isinstance(self.database_engine, Sqlite3Engine):
+            sql = (
+                "SELECT rank(matchinfo(event_search)) as rank, room_id, event_id"
+                " topological_ordering, stream_ordering"
+                " FROM event_search"
+                " NATURAL JOIN events"
+                " WHERE value MATCH ? AND room_id = ?"
+            )
+        else:
+            # This should be unreachable.
+            raise Exception("Unrecognized database engine")
+
+        for clause in clauses:
+            sql += " AND " + clause
+
+        # We add an arbitrary limit here to ensure we don't try to pull the
+        # entire table from the database.
+        sql += " ORDER BY topological_ordering DESC, stream_ordering DESC LIMIT ?"
+
+        args.append(limit)
+
+        results = yield self._execute(
+            "search_rooms", self.cursor_to_dict, sql, *args
+        )
+
+        events = yield self._get_events([r["event_id"] for r in results])
+
+        event_map = {
+            ev.event_id: ev
+            for ev in events
+        }
+
+        defer.returnValue([
+            {
+                "event": event_map[r["event_id"]],
+                "rank": r["rank"],
+                "pagination_token": "%s,%s" % (
+                    r["topological_ordering"], r["stream_ordering"]
+                ),
+            }
+            for r in results
+            if r["event_id"] in event_map
+        ])
diff --git a/synapse/storage/stream.py b/synapse/storage/stream.py
index c728013f4c..be8ba76aae 100644
--- a/synapse/storage/stream.py
+++ b/synapse/storage/stream.py
@@ -158,13 +158,40 @@ class StreamStore(SQLBaseStore):
         defer.returnValue(results)
 
     @log_function
-    def get_room_events_stream(self, user_id, from_key, to_key, limit=0):
-        current_room_membership_sql = (
-            "SELECT m.room_id FROM room_memberships as m "
-            " INNER JOIN current_state_events as c"
-            " ON m.event_id = c.event_id AND c.state_key = m.user_id"
-            " WHERE m.user_id = ? AND m.membership = 'join'"
-        )
+    def get_room_events_stream(
+        self,
+        user_id,
+        from_key,
+        to_key,
+        limit=0,
+        is_guest=False,
+        room_ids=None
+    ):
+        room_ids = room_ids or []
+        room_ids = [r for r in room_ids]
+        if is_guest:
+            current_room_membership_sql = (
+                "SELECT c.room_id FROM history_visibility AS h"
+                " INNER JOIN current_state_events AS c"
+                " ON h.event_id = c.event_id"
+                " WHERE c.room_id IN (%s) AND h.history_visibility = 'world_readable'" % (
+                    ",".join(map(lambda _: "?", room_ids))
+                )
+            )
+            current_room_membership_args = room_ids
+        else:
+            current_room_membership_sql = (
+                "SELECT m.room_id FROM room_memberships as m "
+                " INNER JOIN current_state_events as c"
+                " ON m.event_id = c.event_id AND c.state_key = m.user_id"
+                " WHERE m.user_id = ? AND m.membership = 'join'"
+            )
+            current_room_membership_args = [user_id]
+            if room_ids:
+                current_room_membership_sql += " AND m.room_id in (%s)" % (
+                    ",".join(map(lambda _: "?", room_ids))
+                )
+                current_room_membership_args = [user_id] + room_ids
 
         # We also want to get any membership events about that user, e.g.
         # invites or leave notifications.
@@ -173,6 +200,7 @@ class StreamStore(SQLBaseStore):
             "INNER JOIN current_state_events as c ON m.event_id = c.event_id "
             "WHERE m.user_id = ? "
         )
+        membership_args = [user_id]
 
         if limit:
             limit = max(limit, MAX_STREAM_SIZE)
@@ -199,7 +227,9 @@ class StreamStore(SQLBaseStore):
         }
 
         def f(txn):
-            txn.execute(sql, (False, user_id, user_id, from_id.stream, to_id.stream,))
+            args = ([False] + current_room_membership_args + membership_args +
+                    [from_id.stream, to_id.stream])
+            txn.execute(sql, args)
 
             rows = self.cursor_to_dict(txn)
 
diff --git a/synapse/util/retryutils.py b/synapse/util/retryutils.py
index a42138f556..2fe6814807 100644
--- a/synapse/util/retryutils.py
+++ b/synapse/util/retryutils.py
@@ -18,6 +18,7 @@ from twisted.internet import defer
 from synapse.api.errors import CodeMessageException
 
 import logging
+import random
 
 
 logger = logging.getLogger(__name__)
@@ -85,8 +86,9 @@ def get_retry_limiter(destination, clock, store, **kwargs):
 
 class RetryDestinationLimiter(object):
     def __init__(self, destination, clock, store, retry_interval,
-                 min_retry_interval=5000, max_retry_interval=60 * 60 * 1000,
-                 multiplier_retry_interval=2,):
+                 min_retry_interval=10 * 60 * 1000,
+                 max_retry_interval=24 * 60 * 60 * 1000,
+                 multiplier_retry_interval=5,):
         """Marks the destination as "down" if an exception is thrown in the
         context, except for CodeMessageException with code < 500.
 
@@ -140,6 +142,7 @@ class RetryDestinationLimiter(object):
             # We couldn't connect.
             if self.retry_interval:
                 self.retry_interval *= self.multiplier_retry_interval
+                self.retry_interval *= int(random.uniform(0.8, 1.4))
 
                 if self.retry_interval >= self.max_retry_interval:
                     self.retry_interval = self.max_retry_interval
diff --git a/synapse/util/third_party_invites.py b/synapse/util/third_party_invites.py
deleted file mode 100644
index 31d186740d..0000000000
--- a/synapse/util/third_party_invites.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2015 OpenMarket Ltd
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from twisted.internet import defer
-from synapse.api.errors import AuthError
-
-
-INVITE_KEYS = {"id_server", "medium", "address", "display_name"}
-
-JOIN_KEYS = {
-    "token",
-    "public_key",
-    "key_validity_url",
-    "sender",
-    "signed",
-}
-
-
-def has_invite_keys(content):
-    for key in INVITE_KEYS:
-        if key not in content:
-            return False
-    return True
-
-
-def has_join_keys(content):
-    for key in JOIN_KEYS:
-        if key not in content:
-            return False
-    return True
-
-
-def join_has_third_party_invite(content):
-    if "third_party_invite" not in content:
-        return False
-    return has_join_keys(content["third_party_invite"])
-
-
-def extract_join_keys(src):
-    return {
-        key: value
-        for key, value in src.items()
-        if key in JOIN_KEYS
-    }
-
-
-@defer.inlineCallbacks
-def check_key_valid(http_client, event):
-    try:
-        response = yield http_client.get_json(
-            event.content["third_party_invite"]["key_validity_url"],
-            {"public_key": event.content["third_party_invite"]["public_key"]}
-        )
-    except Exception:
-        raise AuthError(502, "Third party certificate could not be checked")
-    if "valid" not in response or not response["valid"]:
-        raise AuthError(403, "Third party certificate was invalid")
diff --git a/tests/handlers/test_presence.py b/tests/handlers/test_presence.py
index 29372d488a..10d4482cce 100644
--- a/tests/handlers/test_presence.py
+++ b/tests/handlers/test_presence.py
@@ -650,9 +650,30 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
             {"presence": ONLINE}
         )
 
+        # Apple sees self-reflection even without room_id
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_apple,
+            from_key=0,
+        )
+
+        self.assertEquals(self.event_source.get_current_key(), 1)
+        self.assertEquals(events,
+            [
+                {"type": "m.presence",
+                 "content": {
+                    "user_id": "@apple:test",
+                    "presence": ONLINE,
+                    "last_active_ago": 0,
+                }},
+            ],
+            msg="Presence event should be visible to self-reflection"
+        )
+
         # Apple sees self-reflection
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_apple, 0, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_apple,
+            from_key=0,
+            room_ids=[self.room_id],
         )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
@@ -684,8 +705,10 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
         )
 
         # Banana sees it because of presence subscription
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_banana, 0, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_banana,
+            from_key=0,
+            room_ids=[self.room_id],
         )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
@@ -702,8 +725,10 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
         )
 
         # Elderberry sees it because of same room
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_elderberry, 0, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_elderberry,
+            from_key=0,
+            room_ids=[self.room_id],
         )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
@@ -720,8 +745,10 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
         )
 
         # Durian is not in the room, should not see this event
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_durian, 0, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_durian,
+            from_key=0,
+            room_ids=[],
         )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
@@ -767,8 +794,9 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
                  "accepted": True},
         ], presence)
 
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_apple, 1, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_apple,
+            from_key=1,
         )
 
         self.assertEquals(self.event_source.get_current_key(), 2)
@@ -858,8 +886,10 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
             )
         )
 
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_apple, 0, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_apple,
+            from_key=0,
+            room_ids=[self.room_id],
         )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
@@ -905,8 +935,10 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
 
         self.assertEquals(self.event_source.get_current_key(), 1)
 
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_apple, 0, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_apple,
+            from_key=0,
+            room_ids=[self.room_id,]
         )
         self.assertEquals(events,
             [
@@ -932,8 +964,10 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
 
         self.assertEquals(self.event_source.get_current_key(), 2)
 
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_apple, 0, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_apple,
+            from_key=0,
+            room_ids=[self.room_id,]
         )
         self.assertEquals(events,
             [
@@ -966,8 +1000,9 @@ class PresencePushTestCase(MockedDatastorePresenceTestCase):
 
         self.room_members.append(self.u_clementine)
 
-        (events, _) = yield self.event_source.get_new_events_for_user(
-            self.u_apple, 0, None
+        (events, _) = yield self.event_source.get_new_events(
+            user=self.u_apple,
+            from_key=0,
         )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
diff --git a/tests/handlers/test_typing.py b/tests/handlers/test_typing.py
index 41bb08b7ca..2d7ba43561 100644
--- a/tests/handlers/test_typing.py
+++ b/tests/handlers/test_typing.py
@@ -187,7 +187,10 @@ class TypingNotificationsTestCase(unittest.TestCase):
         ])
 
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = yield self.event_source.get_new_events_for_user(self.u_apple, 0, None)
+        events = yield self.event_source.get_new_events(
+            room_ids=[self.room_id],
+            from_key=0,
+        )
         self.assertEquals(
             events[0],
             [
@@ -250,7 +253,10 @@ class TypingNotificationsTestCase(unittest.TestCase):
         ])
 
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = yield self.event_source.get_new_events_for_user(self.u_apple, 0, None)
+        events = yield self.event_source.get_new_events(
+            room_ids=[self.room_id],
+            from_key=0
+        )
         self.assertEquals(
             events[0],
             [
@@ -306,7 +312,10 @@ class TypingNotificationsTestCase(unittest.TestCase):
         yield put_json.await_calls()
 
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = yield self.event_source.get_new_events_for_user(self.u_apple, 0, None)
+        events = yield self.event_source.get_new_events(
+            room_ids=[self.room_id],
+            from_key=0,
+        )
         self.assertEquals(
             events[0],
             [
@@ -337,7 +346,10 @@ class TypingNotificationsTestCase(unittest.TestCase):
         self.on_new_event.reset_mock()
 
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = yield self.event_source.get_new_events_for_user(self.u_apple, 0, None)
+        events = yield self.event_source.get_new_events(
+            room_ids=[self.room_id],
+            from_key=0,
+        )
         self.assertEquals(
             events[0],
             [
@@ -356,7 +368,10 @@ class TypingNotificationsTestCase(unittest.TestCase):
         ])
 
         self.assertEquals(self.event_source.get_current_key(), 2)
-        events = yield self.event_source.get_new_events_for_user(self.u_apple, 1, None)
+        events = yield self.event_source.get_new_events(
+            room_ids=[self.room_id],
+            from_key=1,
+        )
         self.assertEquals(
             events[0],
             [
@@ -383,7 +398,10 @@ class TypingNotificationsTestCase(unittest.TestCase):
         self.on_new_event.reset_mock()
 
         self.assertEquals(self.event_source.get_current_key(), 3)
-        events = yield self.event_source.get_new_events_for_user(self.u_apple, 0, None)
+        events = yield self.event_source.get_new_events(
+            room_ids=[self.room_id],
+            from_key=0,
+        )
         self.assertEquals(
             events[0],
             [
diff --git a/tests/rest/client/v1/test_presence.py b/tests/rest/client/v1/test_presence.py
index 3e0f294630..7f29d73d95 100644
--- a/tests/rest/client/v1/test_presence.py
+++ b/tests/rest/client/v1/test_presence.py
@@ -47,7 +47,14 @@ class NullSource(object):
     def __init__(self, hs):
         pass
 
-    def get_new_events_for_user(self, user, from_key, limit):
+    def get_new_events(
+            self,
+            user,
+            from_key,
+            room_ids=None,
+            limit=None,
+            is_guest=None
+    ):
         return defer.succeed(([], from_key))
 
     def get_current_key(self, direction='f'):
diff --git a/tests/rest/client/v1/test_typing.py b/tests/rest/client/v1/test_typing.py
index 8433585616..61b9cc743b 100644
--- a/tests/rest/client/v1/test_typing.py
+++ b/tests/rest/client/v1/test_typing.py
@@ -116,7 +116,10 @@ class RoomTypingTestCase(RestTestCase):
         self.assertEquals(200, code)
 
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = yield self.event_source.get_new_events_for_user(self.user, 0, None)
+        events = yield self.event_source.get_new_events(
+            from_key=0,
+            room_ids=[self.room_id],
+        )
         self.assertEquals(
             events[0],
             [