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-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
if module:get_host_type() ~= "component" then
error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0);
end
local muc_host = module:get_host();
local muc_name = module:get_option("name");
if type(muc_name) ~= "string" then muc_name = "Prosody Chatrooms"; end
local restrict_room_creation = module:get_option("restrict_room_creation");
if restrict_room_creation then
if restrict_room_creation == true then
restrict_room_creation = "admin";
elseif restrict_room_creation ~= "admin" and restrict_room_creation ~= "local" then
restrict_room_creation = nil;
end
end
local muclib = module:require "muc";
local muc_new_room = muclib.new_room;
local jid_split = require "util.jid".split;
local jid_bare = require "util.jid".bare;
local st = require "util.stanza";
local uuid_gen = require "util.uuid".generate;
local um_is_admin = require "core.usermanager".is_admin;
local hosts = prosody.hosts;
rooms = {};
local rooms = rooms;
local persistent_rooms_storage = module:open_store("persistent");
local persistent_rooms = persistent_rooms_storage:get() or {};
local room_configs = module:open_store("config");
-- Configurable options
muclib.set_max_history_length(module:get_option_number("max_history_messages"));
local function is_admin(jid)
return um_is_admin(jid, module.host);
end
local _set_affiliation = muc_new_room.room_mt.set_affiliation;
local _get_affiliation = muc_new_room.room_mt.get_affiliation;
function muclib.room_mt:get_affiliation(jid)
if is_admin(jid) then return "owner"; end
return _get_affiliation(self, jid);
end
function muclib.room_mt:set_affiliation(actor, jid, affiliation, callback, reason)
if is_admin(jid) then return nil, "modify", "not-acceptable"; end
return _set_affiliation(self, actor, jid, affiliation, callback, reason);
end
local function room_route_stanza(room, stanza) module:send(stanza); end
local function room_save(room, forced)
local node = jid_split(room.jid);
persistent_rooms[room.jid] = room._data.persistent;
if room._data.persistent then
local history = room._data.history;
room._data.history = nil;
local data = {
jid = room.jid;
_data = room._data;
_affiliations = room._affiliations;
};
room_configs:set(node, data);
room._data.history = history;
elseif forced then
room_configs:set(node, nil);
if not next(room._occupants) then -- Room empty
rooms[room.jid] = nil;
end
end
if forced then persistent_rooms_storage:set(nil, persistent_rooms); end
end
function create_room(jid)
local room = muc_new_room(jid);
room.route_stanza = room_route_stanza;
room.save = room_save;
rooms[jid] = room;
module:fire_event("muc-room-created", { room = room });
return room;
end
local persistent_errors = false;
for jid in pairs(persistent_rooms) do
local node = jid_split(jid);
local data = room_configs:get(node);
if data then
local room = create_room(jid);
room._data = data._data;
room._affiliations = data._affiliations;
else -- missing room data
persistent_rooms[jid] = nil;
module:log("error", "Missing data for room '%s', removing from persistent room list", jid);
persistent_errors = true;
end
end
if persistent_errors then persistent_rooms_storage:set(nil, persistent_rooms); end
local host_room = muc_new_room(muc_host);
host_room.route_stanza = room_route_stanza;
host_room.save = room_save;
local function get_disco_info(stanza)
return st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
:tag("identity", {category='conference', type='text', name=muc_name}):up()
:tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
end
local function get_disco_items(stanza)
local reply = st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
for jid, room in pairs(rooms) do
if not room:is_hidden() then
reply:tag("item", {jid=jid, name=room:get_name()}):up();
end
end
return reply; -- TODO cache disco reply
end
local function handle_to_domain(event)
local origin, stanza = event.origin, event.stanza;
local type = stanza.attr.type;
if type == "error" or type == "result" then return; end
if stanza.name == "iq" and type == "get" then
local xmlns = stanza.tags[1].attr.xmlns;
local node = stanza.tags[1].attr.node;
if xmlns == "http://jabber.org/protocol/disco#info" and not node then
origin.send(get_disco_info(stanza));
elseif xmlns == "http://jabber.org/protocol/disco#items" and not node then
origin.send(get_disco_items(stanza));
elseif xmlns == "http://jabber.org/protocol/muc#unique" then
origin.send(st.reply(stanza):tag("unique", {xmlns = xmlns}):text(uuid_gen())); -- FIXME Random UUIDs can theoretically have collisions
else
origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
end
else
host_room:handle_stanza(origin, stanza);
--origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
end
return true;
end
function stanza_handler(event)
local origin, stanza = event.origin, event.stanza;
local bare = jid_bare(stanza.attr.to);
local room = rooms[bare];
if not room then
if stanza.name ~= "presence" then
origin.send(st.error_reply(stanza, "cancel", "item-not-found"));
return true;
end
if not(restrict_room_creation) or
is_admin(stanza.attr.from) or
(restrict_room_creation == "local" and select(2, jid_split(stanza.attr.from)) == module.host:gsub("^[^%.]+%.", "")) then
room = create_room(bare);
end
end
if room then
room:handle_stanza(origin, stanza);
if not next(room._occupants) and not persistent_rooms[room.jid] then -- empty, non-persistent room
rooms[bare] = nil; -- discard room
end
else
origin.send(st.error_reply(stanza, "cancel", "not-allowed"));
end
return true;
end
module:hook("iq/bare", stanza_handler, -1);
module:hook("message/bare", stanza_handler, -1);
module:hook("presence/bare", stanza_handler, -1);
module:hook("iq/full", stanza_handler, -1);
module:hook("message/full", stanza_handler, -1);
module:hook("presence/full", stanza_handler, -1);
module:hook("iq/host", handle_to_domain, -1);
module:hook("message/host", handle_to_domain, -1);
module:hook("presence/host", handle_to_domain, -1);
hosts[module.host].send = function(stanza) -- FIXME do a generic fix
if stanza.attr.type == "result" or stanza.attr.type == "error" then
module:send(stanza);
else error("component.send only supports result and error stanzas at the moment"); end
end
hosts[module:get_host()].muc = { rooms = rooms };
local saved = false;
module.save = function()
saved = true;
return {rooms = rooms};
end
module.restore = function(data)
for jid, oldroom in pairs(data.rooms or {}) do
local room = create_room(jid);
room._jid_nick = oldroom._jid_nick;
room._occupants = oldroom._occupants;
room._data = oldroom._data;
room._affiliations = oldroom._affiliations;
end
hosts[module:get_host()].muc = { rooms = rooms };
end
function shutdown_room(room, stanza)
for nick, occupant in pairs(room._occupants) do
stanza.attr.from = nick;
for jid in pairs(occupant.sessions) do
stanza.attr.to = jid;
room:_route_stanza(stanza);
room._jid_nick[jid] = nil;
end
room._occupants[nick] = nil;
end
end
function shutdown_component()
if not saved then
local stanza = st.presence({type = "unavailable"})
:tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
:tag("item", { affiliation='none', role='none' }):up();
for roomjid, room in pairs(rooms) do
shutdown_room(room, stanza);
end
shutdown_room(host_room, stanza);
end
end
module.unload = shutdown_component;
module:hook_global("server-stopping", shutdown_component);
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