From 399b5add58da4104141500a3bb49cc35dd754563 Mon Sep 17 00:00:00 2001 From: "Paul \"LeoNerd\" Evans" Date: Wed, 15 Apr 2015 18:40:23 +0100 Subject: [PATCH] Neater implementation of membership change auth checks, ensuring we can't forget to check if the calling user is a member of the room --- synapse/api/auth.py | 28 ++++++++++------------------ 1 file changed, 10 insertions(+), 18 deletions(-) diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 97801631f5..e159e4503f 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -215,17 +215,20 @@ class Auth(object): else: ban_level = 50 # FIXME (erikj): What should we do here? - 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 Membership.JOIN != membership: + # JOIN is the only action you can perform if you're not in the room if not caller_in_room: # caller isn't joined raise AuthError( 403, "%s not in room %s." % (event.user_id, event.room_id,) ) - elif target_banned: + + 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 target_banned: raise AuthError( 403, "%s is banned from the room" % (target_user_id,) ) @@ -251,13 +254,7 @@ class Auth(object): raise AuthError(403, "You are not allowed to join this room") elif Membership.LEAVE == membership: # TODO (erikj): Implement kicks. - - if not caller_in_room: # trying to leave a room you aren't joined - raise AuthError( - 403, - "%s not in room %s." % (target_user_id, event.room_id,) - ) - elif target_banned and user_level < ban_level: + if target_banned and user_level < ban_level: raise AuthError( 403, "You cannot unban user &s." % (target_user_id,) ) @@ -272,11 +269,6 @@ class Auth(object): 403, "You cannot kick user %s." % target_user_id ) elif Membership.BAN == membership: - if not caller_in_room: # caller isn't joined - raise AuthError( - 403, - "%s not in room %s." % (event.user_id, event.room_id,) - ) if user_level < ban_level: raise AuthError(403, "You don't have permission to ban") else: