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