Software /
code /
prosody
File
util/muc.lua @ 1258:01b69efffb1c
stanza_router: Don't route before firing events... waqas, is this safe?
author | Matthew Wild <mwild1@gmail.com> |
---|---|
date | Sun, 31 May 2009 22:52:50 +0100 |
parent | 1170:4845372a2c03 |
child | 1349:1d6c4a6c75e5 |
line wrap: on
line source
-- Prosody IM v0.4 -- Copyright (C) 2008-2009 Matthew Wild -- Copyright (C) 2008-2009 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local datamanager = require "util.datamanager"; local datetime = require "util.datetime"; 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 t_insert, t_remove = table.insert, table.remove; local muc_domain = nil; --module:get_host(); local history_length = 20; ------------ local function filter_xmlns_from_array(array, filters) local count = 0; for i=#array,1,-1 do local attr = array[i].attr; if filters[attr and attr.xmlns] then t_remove(array, i); count = count + 1; end end return count; end local function filter_xmlns_from_stanza(stanza, filters) if filters then if filter_xmlns_from_array(stanza.tags, filters) ~= 0 then return stanza, filter_xmlns_from_array(stanza, filters); end end return stanza, 0; end local presence_filters = {["http://jabber.org/protocol/muc"]=true;["http://jabber.org/protocol/muc#user"]=true}; local function get_filtered_presence(stanza) return filter_xmlns_from_stanza(st.clone(stanza), presence_filters); end local kickable_error_conditions = { ["gone"] = true; ["internal-server-error"] = true; ["item-not-found"] = true; ["jid-malformed"] = true; ["recipient-unavailable"] = true; ["redirect"] = true; ["remote-server-not-found"] = true; ["remote-server-timeout"] = true; ["service-unavailable"] = true; }; local function get_kickable_error(stanza) for _, tag in ipairs(stanza.tags) do if tag.name == "error" and tag.attr.xmlns == "jabber:client" then for _, cond in ipairs(tag.tags) do if cond.attr.xmlns == "urn:ietf:params:xml:ns:xmpp-stanzas" then return kickable_error_conditions[cond.name] and cond.name; end end return true; -- malformed error message end end return true; -- malformed error message end local 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 local function getTag(stanza, path) return getUsingPath(stanza, path); end local function getText(stanza, path) return getUsingPath(stanza, path, true); end ----------- --[[function get_room_disco_info(room, 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=room._data["name"]):up() :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply end function get_room_disco_items(room, 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]] -- local function room_broadcast_presence(room, stanza, code, nick) stanza = get_filtered_presence(stanza); local data = room._participants[stanza.attr.from]; stanza:tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) :tag("item", {affiliation=data.affiliation, role=data.role, nick=nick}):up(); if code then stanza:tag("status", {code=code}):up(); end local me; for occupant, o_data in pairs(room._participants) do if occupant ~= stanza.attr.from then for jid in pairs(o_data.sessions) do stanza.attr.to = jid; room:route_stanza(stanza); end else me = o_data; end end if me then stanza:tag("status", {code='110'}); for jid in pairs(me.sessions) do stanza.attr.to = jid; room:route_stanza(stanza); end end end local function room_broadcast_message(room, stanza, historic) for occupant, o_data in pairs(room._participants) do for jid in pairs(o_data.sessions) do stanza.attr.to = jid; room:route_stanza(stanza); end end if historic then -- add to history local history = room._data['history']; if not history then history = {}; room._data['history'] = history; end -- stanza = st.clone(stanza); stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = muc_domain, stamp = datetime.datetime()}):up(); -- XEP-0203 stanza:tag("x", {xmlns = "jabber:x:delay", from = muc_domain, stamp = datetime.legacy()}):up(); -- XEP-0091 (deprecated) t_insert(history, st.clone(st.preserialize(stanza))); while #history > history_length do t_remove(history, 1) end end end local function room_send_occupant_list(room, to) local current_nick = room._jid_nick[to]; for occupant, o_data in pairs(room._participants) do if occupant ~= current_nick then local pres = get_filtered_presence(o_data.sessions[o_data.jid]); pres.attr.to, pres.attr.from = to, occupant; pres:tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up(); room:route_stanza(pres); end end end local function room_send_history(room, to) local history = room._data['history']; -- send discussion history if history then for _, msg in ipairs(history) do msg = st.deserialize(msg); msg.attr.to=to; room:route_stanza(msg); end end if room._data['subject'] then room:route_stanza(st.message({type='groupchat', from=room, to=to}):tag("subject"):text(room._data['subject'])); end end local function room_get_disco_info(self, stanza) end local function room_get_disco_items(self, stanza) end local function room_set_subject(room, current_nick, room, subject) -- TODO check nick's authority if subject == "" then subject = nil; end room._data['subject'] = subject; local msg = st.message({type='groupchat', from=current_nick}) :tag('subject'):text(subject):up(); room_broadcast_message(room, msg, false); return true; end local function room_handle_to_occupant(self, origin, stanza) -- PM, vCards, etc local from, to = stanza.attr.from, stanza.attr.to; local room = jid_bare(to); local current_nick = self._jid_nick[from]; local type = stanza.attr.type; log("debug", "room: %s, current_nick: %s, stanza: %s", room or "nil", current_nick or "nil", stanza:top_tag()); if (select(2, jid_split(from)) == muc_domain) then error("Presence from the MUC itself!!!"); end if stanza.name == "presence" then local pr = get_filtered_presence(stanza); pr.attr.from = current_nick; if type == "error" then -- error, kick em out! if current_nick then log("debug", "kicking %s from %s", current_nick, room); room_handle_to_occupant(self, origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('This participant is kicked from the room because he sent an error presence')); -- send unavailable end elseif type == "unavailable" then -- unavailable if current_nick then log("debug", "%s leaving %s", current_nick, room); local data = self._participants[current_nick]; data.role = 'none'; room_broadcast_presence(room, pr); self._participants[current_nick] = nil; self._jid_nick[from] = nil; end elseif not type then -- available if current_nick then --if #pr == #stanza or current_nick ~= to then -- commented because google keeps resending directed presence if current_nick == to then -- simple presence log("debug", "%s broadcasted presence", current_nick); self._participants[current_nick].sessions[from] = pr; room_broadcast_presence(self, pr); else -- change nick if self._participants[to] then log("debug", "%s couldn't change nick", current_nick); origin.send(st.error_reply(stanza, "cancel", "conflict")); else local data = self._participants[current_nick]; local to_nick = select(3, jid_split(to)); if to_nick then log("debug", "%s (%s) changing nick to %s", current_nick, data.jid, to); local p = st.presence({type='unavailable', from=current_nick}); room_broadcast_presence(self, p, '303', to_nick); self._participants[current_nick] = nil; self._participants[to] = data; self._jid_nick[from] = to; pr.attr.from = to; self._participants[to].sessions[from] = pr; room_broadcast_presence(self, pr); else --TODO malformed-jid end end end --else -- possible rejoin -- log("debug", "%s had connection replaced", current_nick); -- handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('Replaced by new connection'):up()); -- send unavailable -- handle_to_occupant(origin, stanza); -- resend available --end else -- enter room local new_nick = to; if self._participants[to] then new_nick = nil; end if not new_nick then log("debug", "%s couldn't join due to nick conflict: %s", from, to); origin.send(st.error_reply(stanza, "cancel", "conflict")); else log("debug", "%s joining as %s", from, to); local data; -- if not rooms:get(room) and not rooms_info:get(room) then -- new room -- rooms_info:set(room, 'name', (jid_split(room))); -- data = {affiliation='owner', role='moderator', jid=from, sessions={[from]=get_filtered_presence(stanza)}}; -- end if not data then -- new occupant data = {affiliation='none', role='participant', jid=from, sessions={[from]=get_filtered_presence(stanza)}}; end self._participants[to] = data; self._jid_nick[from] = to; room_send_occupant_list(self, from); pr.attr.from = to; room_broadcast_presence(self, pr); room_send_history(self, from); end end elseif type ~= 'result' then -- bad type origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error? end elseif not current_nick and type ~= "error" then -- not in room origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM origin.send(st.error_reply(stanza, "modify", "bad-request")); elseif stanza.name == "message" and type == "error" and get_kickable_error(stanza) then log("debug", "%s kicked from %s for sending an error message", current_nick, room); room_handle_to_occupant(self, origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('This participant is kicked from the room because he sent an error message to another occupant')); -- send unavailable else -- private stanza local o_data = self._participants[to]; if o_data then log("debug", "%s sent private stanza to %s (%s)", from, to, o_data.jid); local jid = o_data.jid; if stanza.name=='iq' and type=='get' and stanza.tags[1].attr.xmlns == 'vcard-temp' then jid = jid_bare(jid); end stanza.attr.to, stanza.attr.from = jid, current_nick; self:route_stanza(stanza); elseif type ~= "error" and type ~= "result" then -- recipient not in room origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room")); end end end local function room_handle_to_room(self, 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(room_get_disco_info(self, stanza)); elseif xmlns == "http://jabber.org/protocol/disco#items" then origin.send(room_get_disco_items(self, 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 = self._jid_nick[from]; if not current_nick then -- not in room origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); else local from = stanza.attr.from; stanza.attr.from = current_nick; local subject = getText(stanza, {"subject"}); if subject then self:set_subject(current_nick, subject); -- TODO use broadcast_message_stanza else room_broadcast_message(self, stanza, true); end end elseif stanza.name == "presence" then -- hack - some buggy clients send presence updates to the room rather than their nick local to = stanza.attr.to; local current_nick = self._jid_nick[stanza.attr.from]; if current_nick then stanza.attr.to = current_nick; room_handle_to_occupant(origin, stanza); stanza.attr.to = to; elseif type ~= "error" and type ~= "result" then origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); end elseif stanza.name == "message" and not stanza.attr.type and #stanza.tags == 1 and self._jid_nick[stanza.attr.from] and stanza.tags[1].name == "x" and stanza.tags[1].attr.xmlns == "http://jabber.org/protocol/muc#user" and #stanza.tags[1].tags == 1 and stanza.tags[1].tags[1].name == "invite" and stanza.tags[1].tags[1].attr.to then local _from, _to = stanza.attr.from, stanza.attr.to; local _invitee = stanza.tags[1].tags[1].attr.to; stanza.attr.from, stanza.attr.to = _to, _invitee; stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = _from, nil; self:route_stanza(stanza); stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = nil, _invitee; stanza.attr.from, stanza.attr.to = _from, _to; else if type == "error" or type == "result" then return; end origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); end end local function room_handle_stanza(self, origin, stanza) local to_node, to_host, to_resource = jid_split(stanza.attr.to); if 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 room_handle_to_occupant(self, origin, stanza); elseif to_node then room_handle_to_room(self, origin, stanza) else -- to the main muc domain end end module "muc" function new_room(jid) return { jid = jid; handle_stanza = room_handle_stanza; set_subject = room_set_subject; route_stanza = function(room, stanza) end; -- Replace with a routing function, e.g., function(room, stanza) core_route_stanza(origin, stanza); end _jid_nick = {}; _participants = {}; _data = {}; } end return _M; --[[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 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 register_component(muc_domain, function(origin, stanza) local to_node, to_host, to_resource = jid_split(stanza.attr.to); if 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]]