diff options
| -rw-r--r-- | synapse/api/auth.py | 2 | ||||
| -rw-r--r-- | synapse/event_auth.py | 45 |
2 files changed, 39 insertions, 8 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 06fa38366d..66639b0089 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -655,7 +655,7 @@ class Auth(object): auth_events[(EventTypes.PowerLevels, "")] = power_level_event send_level = event_auth.get_send_level( - EventTypes.Aliases, "", auth_events + EventTypes.Aliases, "", power_level_event, ) user_level = event_auth.get_user_power_level(user_id, auth_events) diff --git a/synapse/event_auth.py b/synapse/event_auth.py index eaf9cecde6..138175a554 100644 --- a/synapse/event_auth.py +++ b/synapse/event_auth.py @@ -355,9 +355,24 @@ def _check_joined_room(member, user_id, room_id): )) -def get_send_level(etype, state_key, auth_events): - key = (EventTypes.PowerLevels, "", ) - send_level_event = auth_events.get(key) +def get_send_level(etype, state_key, power_levels_event): + """Get the power level required to send an event of a given type + + The federation spec [1] refers to this as "Required Power Level". + + https://matrix.org/docs/spec/server_server/unstable.html#definitions + + Args: + etype (str): type of event + state_key (str|None): state_key of state event, or None if it is not + a state event. + power_levels_event (synapse.events.EventBase|None): power levels event + in force at this point in the room + Returns: + int: power level required to send this event. + """ + + send_level_event = power_levels_event # todo: rename refs below send_level = None if send_level_event: send_level = send_level_event.content.get("events", {}).get( @@ -382,8 +397,10 @@ def get_send_level(etype, state_key, auth_events): def _can_send_event(event, auth_events): + power_levels_event = _get_power_level_event(auth_events) + send_level = get_send_level( - event.type, event.get("state_key", None), auth_events + event.type, event.get("state_key"), power_levels_event, ) user_level = get_user_power_level(event.user_id, auth_events) @@ -524,13 +541,22 @@ def _check_power_levels(event, auth_events): def _get_power_level_event(auth_events): - key = (EventTypes.PowerLevels, "", ) - return auth_events.get(key) + return auth_events.get((EventTypes.PowerLevels, "")) def get_user_power_level(user_id, auth_events): - power_level_event = _get_power_level_event(auth_events) + """Get a user's power level + + Args: + user_id (str): user's id to look up in power_levels + auth_events (dict[(str, str), synapse.events.EventBase]): + state in force at this point in the room (or rather, a subset of + it including at least the create event and power levels event. + Returns: + int: the user's power level in this room. + """ + power_level_event = _get_power_level_event(auth_events) if power_level_event: level = power_level_event.content.get("users", {}).get(user_id) if not level: @@ -541,6 +567,11 @@ def get_user_power_level(user_id, auth_events): else: return int(level) else: + # if there is no power levels event, the creator gets 100 and everyone + # else gets 0. + + # some things which call this don't pass the create event: hack around + # that. key = (EventTypes.Create, "", ) create_event = auth_events.get(key) if (create_event is not None and |