Implement power level lists, default power levels and send_evnet_level/add_state_level events.

synapse/api/auth.py

@@ -17,9 +17,10 @@
 
 from twisted.internet import defer
 
-from synapse.api.constants import Membership
+from synapse.api.constants import Membership, JoinRules
 from synapse.api.errors import AuthError, StoreError, Codes
 from synapse.api.events.room import RoomMemberEvent
+from synapse.util.logutils import log_function
 
 import logging
 
@@ -47,12 +48,19 @@ class Auth(object):
                 if event.type == RoomMemberEvent.TYPE:
                     allowed = yield self.is_membership_change_allowed(event)
                     defer.returnValue(allowed)
-                else:
+                    return
+
                 self._check_joined_room(
                     member=snapshot.membership_state,
                     user_id=snapshot.user_id,
                     room_id=snapshot.room_id,
                 )
+
+                if hasattr(event, "state_key"):
+                    yield self._can_add_state(event)
+                else:
+                    yield self._can_send_event(event)
+
                 defer.returnValue(True)
             else:
                 raise AuthError(500, "Unknown event: %s" % event)
@@ -111,7 +119,14 @@ class Auth(object):
 
         membership = event.content["membership"]
 
+        join_rule = yield self.store.get_room_join_rule(event.room_id)
+        if not join_rule:
+            join_rule = JoinRules.INVITE
+
         if Membership.INVITE == membership:
+            # TODO (erikj): We should probably handle this more intelligently
+            # PRIVATE join rules.
+
             # Invites are valid iff caller is in the room and target isn't.
             if not caller_in_room:  # caller isn't joined
                 raise AuthError(403, "You are not in room %s." % event.room_id)
@@ -124,11 +139,18 @@ class Auth(object):
             # joined: It's a NOOP
             if event.user_id != target_user_id:
                 raise AuthError(403, "Cannot force another user to join.")
-            elif room.is_public:
-                pass  # anyone can join public rooms.
-            elif (not caller or caller.membership not in
-                    [Membership.INVITE, Membership.JOIN]):
+            elif join_rule == JoinRules.PUBLIC or room.is_public:
+                pass
+            elif join_rule == JoinRules.INVITE:
+                if (
+                    not caller or caller.membership not in
+                    [Membership.INVITE, Membership.JOIN]
+                ):
                     raise AuthError(403, "You are not invited to this room.")
+            else:
+                # TODO (erikj): may_join list
+                # TODO (erikj): private rooms
+                raise AuthError(403, "You are not allowed to join this room")
         elif Membership.LEAVE == membership:
             if not caller_in_room:  # trying to leave a room you aren't joined
                 raise AuthError(403, "You are not in room %s." % event.room_id)
@@ -176,3 +198,53 @@ class Auth(object):
         except StoreError:
             raise AuthError(403, "Unrecognised access token.",
                             errcode=Codes.UNKNOWN_TOKEN)
+
+    @defer.inlineCallbacks
+    @log_function
+    def _can_send_event(self, event):
+        send_level = yield self.store.get_send_event_level(event.room_id)
+
+        if send_level:
+            send_level = int(send_level)
+        else:
+            send_level = 0
+
+        user_level = yield self.store.get_power_level(
+            event.room_id,
+            event.user_id,
+        )
+
+        if user_level:
+            user_level = int(user_level)
+        else:
+            user_level = 0
+
+        if user_level < send_level:
+            raise AuthError(
+                403, "You don't have permission to post to the room"
+            )
+
+        defer.returnValue(True)
+
+    @defer.inlineCallbacks
+    def _can_add_state(self, event):
+        add_level = yield self.store.get_add_state_level(event.room_id)
+
+        if not add_level:
+            defer.returnValue(True)
+
+        add_level = int(add_level)
+
+        user_level = yield self.store.get_power_level(
+            event.room_id,
+            event.user_id,
+        )
+
+        user_level = int(user_level)
+
+        if user_level < add_level:
+            raise AuthError(
+                403, "You don't have permission to add state to the room"
+            )
+
+        defer.returnValue(True)

synapse/api/events/factory.py

@@ -16,8 +16,8 @@
 from synapse.api.events.room import (
     RoomTopicEvent, MessageEvent, RoomMemberEvent, FeedbackEvent,
     InviteJoinEvent, RoomConfigEvent, RoomNameEvent, GenericEvent,
-    RoomPowerLevelsEvent, RoomDefaultLevelEvent, RoomJoinRulesEvent,
-    RoomCreateEvent,
+    RoomPowerLevelsEvent, RoomJoinRulesEvent,
+    RoomCreateEvent, RoomAddStateLevelEvent, RoomSendEventLevelEvent
 )
 
 from synapse.util.stringutils import random_string
@@ -34,9 +34,10 @@ class EventFactory(object):
         InviteJoinEvent,
         RoomConfigEvent,
         RoomPowerLevelsEvent,
-        RoomDefaultLevelEvent,
         RoomJoinRulesEvent,
         RoomCreateEvent,
+        RoomAddStateLevelEvent,
+        RoomSendEventLevelEvent,
     ]
 
     def __init__(self, hs):

synapse/api/events/room.py

@@ -155,8 +155,15 @@ class RoomPowerLevelsEvent(SynapseStateEvent):
         return {}
 
 
-class RoomDefaultLevelEvent(SynapseStateEvent):
-    TYPE = "m.room.default_level"
+class RoomAddStateLevelEvent(SynapseStateEvent):
+    TYPE = "m.room.add_state_level"
+
+    def get_content_template(self):
+        return {}
+
+
+class RoomSendEventLevelEvent(SynapseStateEvent):
+    TYPE = "m.room.send_event_level"
 
     def get_content_template(self):
         return {}

synapse/handlers/room.py

@@ -21,7 +21,8 @@ from synapse.api.constants import Membership, JoinRules
 from synapse.api.errors import StoreError, SynapseError
 from synapse.api.events.room import (
     RoomMemberEvent, RoomCreateEvent, RoomPowerLevelsEvent,
-    RoomJoinRulesEvent, RoomDefaultLevelEvent,
+    RoomJoinRulesEvent, RoomAddStateLevelEvent,
+    RoomSendEventLevelEvent,
 )
 from synapse.util import stringutils
 from ._base import BaseRoomHandler
@@ -152,7 +153,7 @@ class RoomCreationHandler(BaseRoomHandler):
 
         creation_event = self.event_factory.create_event(
             etype=RoomCreateEvent.TYPE,
-            content={"creator": creator.to_string()},
+            content={"creator": creator.to_string(), "default": 0},
             **event_keys
         )
 
@@ -162,12 +163,6 @@ class RoomCreationHandler(BaseRoomHandler):
             **event_keys
         )
 
-        default_level_event = self.event_factory.create_event(
-            etype=RoomDefaultLevelEvent.TYPE,
-            content={"default_level": 0},
-            **event_keys
-        )
-
         join_rule = JoinRules.PUBLIC if is_public else JoinRules.INVITE
         join_rules_event = self.event_factory.create_event(
             etype=RoomJoinRulesEvent.TYPE,
@@ -175,7 +170,25 @@ class RoomCreationHandler(BaseRoomHandler):
             **event_keys
         )
 
-        return [creation_event, power_levels_event, default_level_event, join_rules_event]
+        add_state_event = self.event_factory.create_event(
+            etype=RoomAddStateLevelEvent.TYPE,
+            content={"level": 10},
+            **event_keys
+        )
+
+        send_event = self.event_factory.create_event(
+            etype=RoomSendEventLevelEvent.TYPE,
+            content={"level": 0},
+            **event_keys
+        )
+
+        return [
+            creation_event,
+            power_levels_event,
+            join_rules_event,
+            add_state_event,
+            send_event,
+        ]
 
 
 class RoomMemberHandler(BaseRoomHandler):

synapse/storage/__init__.py

@@ -21,7 +21,8 @@ from synapse.api.events.room import (
     RoomNameEvent,
     RoomJoinRulesEvent,
     RoomPowerLevelsEvent,
-    RoomDefaultLevelEvent,
+    RoomAddStateLevelEvent,
+    RoomSendEventLevelEvent,
 )
 
 from synapse.util.logutils import log_function
@@ -136,8 +137,10 @@ class DataStore(RoomMemberStore, RoomStore,
             self._store_join_rule(txn, event)
         elif event.type == RoomPowerLevelsEvent.TYPE:
             self._store_power_levels(txn, event)
-        elif event.type == RoomDefaultLevelEvent.TYPE:
-            self._store_default_level(txn, event)
+        elif event.type == RoomAddStateLevelEvent.TYPE:
+            self._store_add_state_level(txn, event)
+        elif event.type == RoomSendEventLevelEvent.TYPE:
+            self._store_send_event_level(txn, event)
 
         vals = {
             "topological_ordering": event.depth,
@@ -231,7 +234,6 @@ class DataStore(RoomMemberStore, RoomStore,
 
         defer.returnValue(self.min_token)
 
-
     def snapshot_room(self, room_id, user_id, state_type=None, state_key=None):
         """Snapshot the room for an update by a user
         Args:

synapse/storage/room.py

@@ -174,6 +174,28 @@ class RoomStore(SQLBaseStore):
         else:
             defer.returnValue(None)
 
+    def get_add_state_level(self, room_id):
+        return self._get_level_from_table("room_add_state_levels", room_id)
+
+    def get_send_event_level(self, room_id):
+        return self._get_level_from_table("room_send_event_levels", room_id)
+
+    @defer.inlineCallbacks
+    def _get_level_from_table(self, table, room_id):
+        sql = (
+            "SELECT level FROM %(table)s as r "
+            "INNER JOIN current_state_events as c "
+            "ON r.event_id = c.event_id "
+            "WHERE c.room_id = ? "
+        ) % {"table": table}
+
+        rows = yield self._execute(None, sql, room_id)
+
+        if len(rows) == 1:
+            defer.returnValue(rows[0][0])
+        else:
+            defer.returnValue(None)
+
     def _store_room_topic_txn(self, txn, event):
         self._simple_insert_txn(
             txn,
@@ -196,19 +218,30 @@ class RoomStore(SQLBaseStore):
             }
         )
 
-    def _store_join_rule(txn, event):
+    def _store_join_rule(self, txn, event):
         self._simple_insert_txn(
             txn,
             "room_join_rules",
             {
                 "event_id": event.event_id,
                 "room_id": event.room_id,
-                "join_rule": event.join_rule,
+                "join_rule": event.content["join_rule"],
             },
         )
 
-    def _store_power_levels(txn, event):
-        for user_id, level in event.content:
+    def _store_power_levels(self, txn, event):
+        for user_id, level in event.content.items():
+            if user_id == "default":
+                self._simple_insert_txn(
+                    txn,
+                    "room_default_levels",
+                    {
+                        "event_id": event.event_id,
+                        "room_id": event.room_id,
+                        "level": level,
+                    },
+                )
+            else:
                 self._simple_insert_txn(
                     txn,
                     "room_power_levels",
@@ -220,14 +253,36 @@ class RoomStore(SQLBaseStore):
                     },
                 )
 
-    def _store_default_level(txn, event):
+    def _store_default_level(self, txn, event):
         self._simple_insert_txn(
             txn,
             "room_default_levels",
             {
                 "event_id": event.event_id,
                 "room_id": event.room_id,
-                "level": level
+                "level": event.content["default_level"],
+            },
+        )
+
+    def _store_add_state_level(self, txn, event):
+        self._simple_insert_txn(
+            txn,
+            "room_add_state_levels",
+            {
+                "event_id": event.event_id,
+                "room_id": event.room_id,
+                "level": event.content["level"],
+            },
+        )
+
+    def _store_send_event_level(self, txn, event):
+        self._simple_insert_txn(
+            txn,
+            "room_send_event_levels",
+            {
+                "event_id": event.event_id,
+                "room_id": event.room_id,
+                "level": event.content["level"],
             },
         )
 

synapse/storage/schema/im.sql

@@ -126,6 +126,26 @@ CREATE INDEX IF NOT EXISTS room_default_levels_event_id ON room_default_levels(e
 CREATE INDEX IF NOT EXISTS room_default_levels_room_id ON room_default_levels(room_id);
 
 
+CREATE TABLE IF NOT EXISTS room_add_state_levels(
+    event_id TEXT NOT NULL,
+    room_id TEXT NOT NULL,
+    level INTEGER NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS room_add_state_levels_event_id ON room_add_state_levels(event_id);
+CREATE INDEX IF NOT EXISTS room_add_state_levels_room_id ON room_add_state_levels(room_id);
+
+
+CREATE TABLE IF NOT EXISTS room_send_event_levels(
+    event_id TEXT NOT NULL,
+    room_id TEXT NOT NULL,
+    level INTEGER NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS room_send_event_levels_event_id ON room_send_event_levels(event_id);
+CREATE INDEX IF NOT EXISTS room_send_event_levels_room_id ON room_send_event_levels(room_id);
+
+
 CREATE TABLE IF NOT EXISTS room_hosts(
     room_id TEXT NOT NULL,
     host TEXT NOT NULL,