Sat, 17 Jan 2009 04:45:08 +0000
Port to new server.lua, quite some changes, but I believe everything to be working
local register_component = require "core.componentmanager".register_component; local deregister_component = require "core.componentmanager".deregister_component; local jid_split = require "util.jid".split; local jid_bare = require "util.jid".bare; local st = require "util.stanza"; local log = require "util.logger".init("mod_muc"); local multitable_new = require "util.multitable".new; local muc_domain = "conference."..module:get_host(); local muc_name = "MUCMUCMUC!!!"; -- room_name -> room -- occupant_room_nick -> data -- affiliation = ... -- role -- jid = occupant's real jid local rooms = multitable_new(); local jid_nick = multitable_new(); -- real jid -> room's jid -> room nick -- room_name -> info -- name - the room's friendly name -- subject - the room's subject -- non-anonymous = true|nil -- persistent = true|nil local rooms_info = multitable_new(); local persist_list = datamanager.load(nil, muc_domain, 'room_list') or {}; for room in pairs(persist_list) do rooms_info:set(room, datamanager.store(room, muc_domain, 'rooms') or nil); end local component; function getUsingPath(stanza, path, getText) local tag = stanza; for _, name in ipairs(path) do if type(tag) ~= 'table' then return; end tag = tag:child_with_name(name); end if tag and getText then tag = table.concat(tag); end return tag; end function getTag(stanza, path) return getUsingPath(stanza, path); end function getText(stanza, path) return getUsingPath(stanza, path, true); end function get_disco_info(stanza) return st.iq({type='result', id=stanza.attr.id, from=muc_domain, 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 function get_disco_items(stanza) local reply = st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items"); for room in pairs(rooms_info:get()) do reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up(); end return reply; -- TODO cache disco reply end function get_room_disco_info(stanza) return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info") :tag("identity", {category='conference', type='text', name=rooms_info:get(stanza.attr.to, "name")}):up() :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply end function get_room_disco_items(stanza) return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items"); end -- TODO allow non-private rooms function save_room(room) local persistent = rooms_info:get(room, 'persistent'); if persistent then datamanager.store(room, muc_domain, 'rooms', rooms_info:get(room)); end if persistent ~= persist_list[room] then if not persistent then datamanager.store(room, muc_domain, 'rooms', nil); end persist_list[room] = persistent; datamanager.store(nil, muc_domain, 'room_list', persist_list); end end function set_subject(current_nick, room, subject) -- TODO check nick's authority if subject == "" then subject = nil; end rooms_info:set(room, 'subject', subject); save_room(); broadcast_message(current_nick, room, subject or "", nil); return true; end function broadcast_presence(type, from, room, code) local data = rooms:get(room, from); local stanza = st.presence({type=type, from=from}) :tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) :tag("item", {affiliation=data.affiliation, role=data.role}):up(); if code then stanza:tag("status", {code=code}):up(); end local me; local r = rooms:get(room); if r then for occupant, o_data in pairs(r) do if occupant ~= from then stanza.attr.to = o_data.jid; core_route_stanza(component, stanza); else me = o_data.jid; end end end if me then stanza:tag("status", {code='110'}); stanza.attr.to = me; core_route_stanza(component, stanza); end end function broadcast_message(from, room, subject, body) local stanza = st.message({type='groupchat', from=from}); if subject then stanza:tag('subject'):text(subject):up(); end if body then stanza:tag('body'):text(body):up(); end local r = rooms:get(room); if r then for occupant, o_data in pairs(r) do stanza.attr.to = o_data.jid; core_route_stanza(component, stanza); end end end function handle_to_occupant(origin, stanza) -- PM, vCards, etc local from, to = stanza.attr.from, stanza.attr.to; local room = jid_bare(to); local current_nick = jid_nick:get(from, room); local type = stanza.attr.type; if stanza.name == "presence" then if type == "error" then -- error, kick em out! local data = rooms:get(room, to); data.role = 'none'; broadcast_presence('unavailable', to, room); -- TODO also add <status>This participant is kicked from the room because he sent an error presence: badformed error stanza</status> rooms:remove(room, to); jid_nick:remove(from, room); elseif type == "unavailable" then -- unavailable if current_nick == to then local data = rooms:get(room, to); data.role = 'none'; broadcast_presence('unavailable', to, room); rooms:remove(room, to); jid_nick:remove(from, room); end -- TODO else do nothing? elseif not type then -- available if current_nick then if current_nick == to then -- simple presence -- TODO broadcast else -- change nick if rooms:get(room, to) then origin.send(st.error_reply(stanza, "cancel", "conflict")); else local data = rooms:get(room, current_nick); broadcast_presence('unavailable', current_nick, room, '303'); rooms:remove(room, current_nick); rooms:set(room, to, data); jid_nick:set(from, room, to); broadcast_presence(nil, to, room); end end else -- enter room if rooms:get(room, to) then origin.send(st.error_reply(stanza, "cancel", "conflict")); else local data; if not rooms:get(room) and not rooms_info:get(room) then -- new room data = {affiliation='owner', role='moderator', jid=from}; end if not data then -- new occupant data = {affiliation='none', role='participant', jid=from}; end rooms:set(room, to, data); jid_nick:set(from, room, to); local r = rooms:get(room); if r then for occupant, o_data in pairs(r) do if occupant ~= from then local pres = st.presence({to=from, from=occupant}) :tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up(); core_route_stanza(component, pres); end end end broadcast_presence(nil, to, room); -- TODO send discussion history if rooms_info:get(room, 'subject') then core_route_stanza(component, st.message({type='groupchat', from=room, to=from}):tag("subject"):text(rooms_info:get(room, 'subject'))); end end end elseif type ~= 'result' then -- bad type origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error? end elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM origin.send(st.error_reply(stanza, "modify", "bad-request")); else origin.send(st.error_reply(stanza, "cancel", "not-implemented", "Private stanzas not implemented")); -- TODO route private stanza end end function handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc local type = stanza.attr.type; if stanza.name == "iq" and type == "get" then -- disco requests local xmlns = stanza.tags[1].attr.xmlns; if xmlns == "http://jabber.org/protocol/disco#info" then origin.send(get_room_disco_info(stanza)); elseif xmlns == "http://jabber.org/protocol/disco#items" then origin.send(get_room_disco_items(stanza)); else origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); end elseif stanza.name == "message" and type == "groupchat" then local from, to = stanza.attr.from, stanza.attr.to; local room = jid_bare(to); local current_nick = jid_nick:get(from, room); if not current_nick then -- not in room origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); else local subject = getText(stanza, {"subject"}); if subject then set_subject(current_nick, room, subject); else broadcast_message(current_nick, room, nil, getText(stanza, {"body"})); -- TODO add to discussion history end end else if type == "error" or type == "result" then return; end origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); end end function handle_to_domain(origin, 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; if xmlns == "http://jabber.org/protocol/disco#info" then origin.send(get_disco_info(stanza)); elseif xmlns == "http://jabber.org/protocol/disco#items" then origin.send(get_disco_items(stanza)); else origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc end else origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it")); end end component = register_component(muc_domain, function(origin, stanza) local to_node, to_host, to_resource = jid_split(stanza.attr.to); if stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then if type == "error" or type == "result" then return; end origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME what's appropriate? elseif to_resource and not to_node then if type == "error" or type == "result" then return; end origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource elseif to_resource then handle_to_occupant(origin, stanza); elseif to_node then handle_to_room(origin, stanza) else -- to the main muc domain if type == "error" or type == "result" then return; end handle_to_domain(origin, stanza); end end); module.unload = function() deregister_component(muc_domain); end module.save = function() return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list}; end module.restore = function(data) rooms.data, jid_nick.data, rooms_info.data, persist_list = data.rooms or {}, data.jid_nick or {}, data.rooms_info or {}, data.persist_list or {}; end