plugins/muc/mod_muc.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2009 Matthew Wild
   3 -- Copyright (C) 2008-2009 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 = "Chatrooms";
  16 local history_length = 20;
  17
  18 local muc_new_room = module:require "muc".new_room;
  19 local register_component = require "core.componentmanager".register_component;
  20 local deregister_component = require "core.componentmanager".deregister_component;
  21 local jid_split = require "util.jid".split;
  22 local st = require "util.stanza";
  23 local uuid_gen = require "util.uuid".generate;
  24 local datamanager = require "util.datamanager";
  25
  26 local rooms = {};
  27 local persistent_rooms = datamanager.load(nil, muc_host, "persistent") or {};
  28 local component;
  29
  30 local function room_route_stanza(room, stanza) core_post_stanza(component, stanza); end
  31 local function room_save(room, forced)
  32         local node = jid_split(room.jid);
  33         persistent_rooms[room.jid] = room._data.persistent;
  34         module:log("debug", "1, %s, %s", room.jid, tostring(room._data.persistent));
  35         if room._data.persistent then
  36                 module:log("debug", "2");
  37                 local history = room._data.history;
  38                 room._data.history = nil;
  39                 local data = {
  40                         jid = room.jid;
  41                         _data = room._data;
  42                         _affiliations = room._affiliations;
  43                 };
  44                 datamanager.store(node, muc_host, "config", data);
  45                 room._data.history = history;
  46         elseif forced then
  47                 module:log("debug", "3");
  48                 datamanager.store(node, muc_host, "config", nil);
  49         end
  50         module:log("debug", "4");
  51         if forced then datamanager.store(nil, muc_host, "persistent", persistent_rooms); end
  52 end
  53
  54 for jid in pairs(persistent_rooms) do
  55         local node = jid_split(jid);
  56         local data = datamanager.load(node, muc_host, "config") or {};
  57         local room = muc_new_room(jid);
  58         room._data = data._data;
  59         room._affiliations = data._affiliations;
  60         room.route_stanza = room_route_stanza;
  61         room.save = room_save;
  62         rooms[jid] = room;
  63 end
  64
  65 local host_room = muc_new_room(muc_host);
  66 host_room.route_stanza = room_route_stanza;
  67 host_room.save = room_save;
  68
  69 local function get_disco_info(stanza)
  70         return st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
  71                 :tag("identity", {category='conference', type='text', name=muc_name}):up()
  72                 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
  73 end
  74 local function get_disco_items(stanza)
  75         local reply = st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
  76         for jid, room in pairs(rooms) do
  77                 if not room._data.hidden then
  78                         reply:tag("item", {jid=jid, name=jid}):up();
  79                 end
  80         end
  81         return reply; -- TODO cache disco reply
  82 end
  83
  84 local function handle_to_domain(origin, stanza)
  85         local type = stanza.attr.type;
  86         if type == "error" or type == "result" then return; end
  87         if stanza.name == "iq" and type == "get" then
  88                 local xmlns = stanza.tags[1].attr.xmlns;
  89                 if xmlns == "http://jabber.org/protocol/disco#info" then
  90                         origin.send(get_disco_info(stanza));
  91                 elseif xmlns == "http://jabber.org/protocol/disco#items" then
  92                         origin.send(get_disco_items(stanza));
  93                 elseif xmlns == "http://jabber.org/protocol/muc#unique" then
  94                         origin.send(st.reply(stanza):tag("unique", {xmlns = xmlns}):text(uuid_gen())); -- FIXME Random UUIDs can theoretically have collisions
  95                 else
  96                         origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
  97                 end
  98         else
  99                 host_room:handle_stanza(origin, stanza);
 100                 --origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
 101         end
 102 end
 103
 104 component = register_component(muc_host, function(origin, stanza)
 105         local to_node, to_host, to_resource = jid_split(stanza.attr.to);
 106         if to_node then
 107                 local bare = to_node.."@"..to_host;
 108                 if to_host == muc_host or bare == muc_host then
 109                         local room = rooms[bare];
 110                         if not room then
 111                                 room = muc_new_room(bare);
 112                                 room.route_stanza = room_route_stanza;
 113                                 room.save = room_save;
 114                                 rooms[bare] = room;
 115                         end
 116                         room:handle_stanza(origin, stanza);
 117                         if not next(room._occupants) and not persistent_rooms[room.jid] then -- empty, non-persistent room
 118                                 rooms[bare] = nil; -- discard room
 119                         end
 120                 else --[[not for us?]] end
 121                 return;
 122         end
 123         -- to the main muc domain
 124         handle_to_domain(origin, stanza);
 125 end);
 126 function component.send(stanza) -- FIXME do a generic fix
 127         if stanza.attr.type == "result" or stanza.attr.type == "error" then
 128                 core_post_stanza(component, stanza);
 129         else error("component.send only supports result and error stanzas at the moment"); end
 130 end
 131
 132 prosody.hosts[module:get_host()].muc = { rooms = rooms };
 133
 134 module.unload = function()
 135         deregister_component(muc_host);
 136 end
 137 module.save = function()
 138         return {rooms = rooms};
 139 end
 140 module.restore = function(data)
 141         rooms = {};
 142         for jid, oldroom in pairs(data.rooms or {}) do
 143                 local room = muc_new_room(jid);
 144                 room._jid_nick = oldroom._jid_nick;
 145                 room._occupants = oldroom._occupants;
 146                 room._data = oldroom._data;
 147                 room._affiliations = oldroom._affiliations;
 148                 room.route_stanza = room_route_stanza;
 149                 room.save = room_save;
 150                 rooms[jid] = room;
 151         end
 152         prosody.hosts[module:get_host()].muc = { rooms = rooms };
 153 end