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Neater implementation of membership change auth checks, ensuring we can't forget to check if the calling user is a member of the room

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Paul "LeoNerd" Evans 2015-04-15 18:40:23 +01:00
parent e6e130b9ba
commit 399b5add58
1 changed files with 10 additions and 18 deletions
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28
synapse/api/auth.py
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@ -215,17 +215,20 @@ class Auth(object):
else: else:
ban_level = 50 # FIXME (erikj): What should we do here? ban_level = 50 # FIXME (erikj): What should we do here?
if Membership.INVITE == membership: if Membership.JOIN != membership:
# TODO (erikj): We should probably handle this more intelligently # JOIN is the only action you can perform if you're not in the room
# 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 if not caller_in_room: # caller isn't joined
raise AuthError( raise AuthError(
403, 403,
"%s not in room %s." % (event.user_id, event.room_id,) "%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( raise AuthError(
403, "%s is banned from the room" % (target_user_id,) 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") raise AuthError(403, "You are not allowed to join this room")
elif Membership.LEAVE == membership: elif Membership.LEAVE == membership:
# TODO (erikj): Implement kicks. # TODO (erikj): Implement kicks.
if target_banned and user_level < ban_level:
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:
raise AuthError( raise AuthError(
403, "You cannot unban user &s." % (target_user_id,) 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 403, "You cannot kick user %s." % target_user_id
) )
elif Membership.BAN == membership: 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: if user_level < ban_level:
raise AuthError(403, "You don't have permission to ban") raise AuthError(403, "You don't have permission to ban")
else: else: