plugins/muc/lock.lib.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2010 Matthew Wild
   3 -- Copyright (C) 2008-2010 Waqas Hussain
   4 -- Copyright (C) 2014 Daurnimator
   5 --
   6 -- This project is MIT/X11 licensed. Please see the
   7 -- COPYING file in the source package for more information.
   8 --
   9
  10 local st = require "util.stanza";
  11
  12 local lock_rooms = module:get_option_boolean("muc_room_locking", false);
  13 local lock_room_timeout = module:get_option_number("muc_room_lock_timeout", 300);
  14
  15 local function lock(room)
  16         module:fire_event("muc-room-locked", {room = room;});
  17         room._data.locked = os.time() + lock_room_timeout;
  18 end
  19 local function unlock(room)
  20         module:fire_event("muc-room-unlocked", {room = room;});
  21         room._data.locked = nil;
  22 end
  23 local function is_locked(room)
  24         local ts = room._data.locked or false;
  25         if ts then
  26                 if ts < os.time() then return true; end
  27                 unlock(room);
  28         end
  29         return false;
  30 end
  31
  32 if lock_rooms then
  33         module:hook("muc-room-pre-create", function(event)
  34                 -- Older groupchat protocol doesn't lock
  35                 if not event.stanza:get_child("x", "http://jabber.org/protocol/muc") then return end
  36                 -- Lock room at creation
  37                 local room = event.room;
  38                 lock(room);
  39         end, 10);
  40 end
  41
  42 -- Don't let users into room while it is locked
  43 module:hook("muc-occupant-pre-join", function(event)
  44         if not event.is_new_room and is_locked(event.room) then -- Deny entry
  45                 event.origin.send(st.error_reply(event.stanza, "cancel", "item-not-found"));
  46                 return true;
  47         end
  48 end, -30);
  49
  50 -- When config is submitted; unlock the room
  51 module:hook("muc-config-submitted", function(event)
  52         if is_locked(event.room) then
  53                 unlock(event.room);
  54         end
  55 end, -1);
  56
  57 return {
  58         lock = lock;
  59         unlock = unlock;
  60         is_locked = is_locked;
  61 };