plugins/muc/mod_muc.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2010 Matthew Wild
   3 -- Copyright (C) 2008-2010 Waqas Hussain
   4 --
   5 -- This project is MIT/X11 licensed. Please see the
   6 -- COPYING file in the source package for more information.
   7 --
   8
   9
  10 if module:get_host_type() ~= "component" then
  11         error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0);
  12 end
  13
  14 local muc_host = module:get_host();
  15 local muc_name = module:get_option("name");
  16 if type(muc_name) ~= "string" then muc_name = "Prosody Chatrooms"; end
  17 local restrict_room_creation = module:get_option("restrict_room_creation");
  18 if restrict_room_creation and restrict_room_creation ~= true then restrict_room_creation = nil; end
  19
  20 local muc_new_room = module:require "muc".new_room;
  21 local register_component = require "core.componentmanager".register_component;
  22 local deregister_component = require "core.componentmanager".deregister_component;
  23 local jid_split = require "util.jid".split;
  24 local jid_bare = require "util.jid".bare;
  25 local st = require "util.stanza";
  26 local uuid_gen = require "util.uuid".generate;
  27 local datamanager = require "util.datamanager";
  28 local um_is_admin = require "core.usermanager".is_admin;
  29
  30 local rooms = {};
  31 local persistent_rooms = datamanager.load(nil, muc_host, "persistent") or {};
  32 local component;
  33
  34 local function is_admin(jid)
  35         return um_is_admin(jid) or um_is_admin(jid, module.host);
  36 end
  37
  38 local function room_route_stanza(room, stanza) core_post_stanza(component, stanza); end
  39 local function room_save(room, forced)
  40         local node = jid_split(room.jid);
  41         persistent_rooms[room.jid] = room._data.persistent;
  42         if room._data.persistent then
  43                 local history = room._data.history;
  44                 room._data.history = nil;
  45                 local data = {
  46                         jid = room.jid;
  47                         _data = room._data;
  48                         _affiliations = room._affiliations;
  49                 };
  50                 datamanager.store(node, muc_host, "config", data);
  51                 room._data.history = history;
  52         elseif forced then
  53                 datamanager.store(node, muc_host, "config", nil);
  54         end
  55         if forced then datamanager.store(nil, muc_host, "persistent", persistent_rooms); end
  56 end
  57
  58 for jid in pairs(persistent_rooms) do
  59         local node = jid_split(jid);
  60         local data = datamanager.load(node, muc_host, "config") or {};
  61         local room = muc_new_room(jid);
  62         room._data = data._data;
  63         room._affiliations = data._affiliations;
  64         room.route_stanza = room_route_stanza;
  65         room.save = room_save;
  66         rooms[jid] = room;
  67 end
  68
  69 local host_room = muc_new_room(muc_host);
  70 host_room.route_stanza = room_route_stanza;
  71 host_room.save = room_save;
  72
  73 local function get_disco_info(stanza)
  74         return st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
  75                 :tag("identity", {category='conference', type='text', name=muc_name}):up()
  76                 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
  77 end
  78 local function get_disco_items(stanza)
  79         local reply = st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
  80         for jid, room in pairs(rooms) do
  81                 if not room._data.hidden then
  82                         reply:tag("item", {jid=jid, name=jid}):up();
  83                 end
  84         end
  85         return reply; -- TODO cache disco reply
  86 end
  87
  88 local function handle_to_domain(origin, stanza)
  89         local type = stanza.attr.type;
  90         if type == "error" or type == "result" then return; end
  91         if stanza.name == "iq" and type == "get" then
  92                 local xmlns = stanza.tags[1].attr.xmlns;
  93                 if xmlns == "http://jabber.org/protocol/disco#info" then
  94                         origin.send(get_disco_info(stanza));
  95                 elseif xmlns == "http://jabber.org/protocol/disco#items" then
  96                         origin.send(get_disco_items(stanza));
  97                 elseif xmlns == "http://jabber.org/protocol/muc#unique" then
  98                         origin.send(st.reply(stanza):tag("unique", {xmlns = xmlns}):text(uuid_gen())); -- FIXME Random UUIDs can theoretically have collisions
  99                 else
 100                         origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
 101                 end
 102         else
 103                 host_room:handle_stanza(origin, stanza);
 104                 --origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
 105         end
 106 end
 107
 108 component = register_component(muc_host, function(origin, stanza)
 109         local to_node, to_host, to_resource = jid_split(stanza.attr.to);
 110         if to_node then
 111                 local bare = to_node.."@"..to_host;
 112                 if to_host == muc_host or bare == muc_host then
 113                         local room = rooms[bare];
 114                         if not room then
 115                                 if not(restrict_room_creation) or is_admin(stanza.attr.from) then
 116                                         room = muc_new_room(bare);
 117                                         room.route_stanza = room_route_stanza;
 118                                         room.save = room_save;
 119                                         rooms[bare] = room;
 120                                 end
 121                         end
 122                         if room then
 123                                 room:handle_stanza(origin, stanza);
 124                                 if not next(room._occupants) and not persistent_rooms[room.jid] then -- empty, non-persistent room
 125                                         rooms[bare] = nil; -- discard room
 126                                 end
 127                         else
 128                                 origin.send(st.error_reply(stanza, "cancel", "not-allowed"));
 129                         end
 130                 else --[[not for us?]] end
 131                 return;
 132         end
 133         -- to the main muc domain
 134         handle_to_domain(origin, stanza);
 135 end);
 136 function component.send(stanza) -- FIXME do a generic fix
 137         if stanza.attr.type == "result" or stanza.attr.type == "error" then
 138                 core_post_stanza(component, stanza);
 139         else error("component.send only supports result and error stanzas at the moment"); end
 140 end
 141
 142 prosody.hosts[module:get_host()].muc = { rooms = rooms };
 143
 144 module.unload = function()
 145         deregister_component(muc_host);
 146 end
 147 module.save = function()
 148         return {rooms = rooms};
 149 end
 150 module.restore = function(data)
 151         rooms = {};
 152         for jid, oldroom in pairs(data.rooms or {}) do
 153                 local room = muc_new_room(jid);
 154                 room._jid_nick = oldroom._jid_nick;
 155                 room._occupants = oldroom._occupants;
 156                 room._data = oldroom._data;
 157                 room._affiliations = oldroom._affiliations;
 158                 room.route_stanza = room_route_stanza;
 159                 room.save = room_save;
 160                 rooms[jid] = room;
 161         end
 162         prosody.hosts[module:get_host()].muc = { rooms = rooms };
 163 end