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