+-- 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 register_component = require "core.componentmanager".register_component;
local deregister_component = require "core.componentmanager".deregister_component;
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;
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_domain = module:get_host();
-
-local muc_name = "MUCMUCMUC!!!";
+local muc_name = "Chatrooms";
+local history_length = 20;
-- room_name -> room
-- occupant_room_nick -> data
-- subject - the room's subject
-- non-anonymous = true|nil
-- persistent = true|nil
+ -- history = {preserialized stanzas}
local rooms_info = multitable_new();
local persist_list = datamanager.load(nil, muc_domain, 'room_list') or {};
local component;
+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
+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};
+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;
+};
+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
function getUsingPath(stanza, path, getText)
local tag = stanza;
for _, name in ipairs(path) do
if subject == "" then subject = nil; end
rooms_info:set(room, 'subject', subject);
save_room();
- broadcast_message(current_nick, room, subject or "", nil);
+ local msg = st.message({type='groupchat', from=current_nick})
+ :tag('subject'):text(subject):up();
+ broadcast_message_stanza(room, msg, false);
return true;
end
-function broadcast_presence(type, from, room, code, newnick)
- 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, nick = newnick}):up();
+function broadcast_message_stanza(room, stanza, historic)
+ local r = rooms:get(room);
+ if r then
+ for occupant, o_data in pairs(r) do
+ for jid in pairs(o_data.sessions) do
+ stanza.attr.to = jid;
+ core_route_stanza(component, stanza);
+ end
+ end
+ if historic then -- add to history
+ local history = rooms_info:get(room, 'history');
+ if not history then history = {}; rooms_info:set(room, '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
+end
+function broadcast_presence_stanza(room, stanza, code, nick)
+ stanza = get_filtered_presence(stanza);
+ local data = rooms:get(room, 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 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);
+ if occupant ~= stanza.attr.from then
+ for jid in pairs(o_data.sessions) do
+ stanza.attr.to = jid;
+ core_route_stanza(component, stanza);
+ end
else
- me = o_data.jid;
+ me = o_data;
end
end
end
if me then
stanza:tag("status", {code='110'});
- stanza.attr.to = me;
- core_route_stanza(component, stanza);
+ for jid in pairs(me.sessions) do
+ stanza.attr.to = jid;
+ core_route_stanza(component, stanza);
+ end
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
+function send_history(room, to)
+ local history = rooms_info:get(room, 'history'); -- send discussion history
+ if history then
+ for _, msg in ipairs(history) do
+ msg = st.deserialize(msg);
+ msg.attr.to=to;
+ core_route_stanza(component, msg);
+ end
+ end
+ if rooms_info:get(room, 'subject') then
+ core_route_stanza(component, st.message({type='groupchat', from=room, to=to}):tag("subject"):text(rooms_info:get(room, 'subject')));
+ end
+end
+function send_occupant_list(room, to)
local r = rooms:get(room);
if r then
+ local current_nick = jid_nick:get(to, room);
for occupant, o_data in pairs(r) do
- stanza.attr.to = o_data.jid;
- core_route_stanza(component, stanza);
+ 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();
+ core_route_stanza(component, pres);
+ end
end
end
end
local room = jid_bare(to);
local current_nick = jid_nick:get(from, room);
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!
- 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);
+ if current_nick then
+ log("debug", "kicking %s from %s", current_nick, room);
+ handle_to_occupant(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 == to then
- local data = rooms:get(room, to);
+ if current_nick then
+ log("debug", "%s leaving %s", current_nick, room);
+ local data = rooms:get(room, current_nick);
data.role = 'none';
- broadcast_presence('unavailable', to, room);
- rooms:remove(room, to);
+ broadcast_presence_stanza(room, pr);
+ rooms:remove(room, current_nick);
jid_nick:remove(from, room);
- end -- TODO else do nothing?
+ end
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);
- local to_nick = select(3, jid_split(to));
- if to_nick then
- broadcast_presence('unavailable', current_nick, room, '303', to_nick);
- rooms:remove(room, current_nick);
- rooms:set(room, to, data);
- jid_nick:set(from, room, to);
- broadcast_presence(nil, to, room, nil);
+ --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);
+ rooms:get(room, current_nick).sessions[from] = pr;
+ broadcast_presence_stanza(room, pr);
+ else -- change nick
+ if rooms:get(room, to) then
+ log("debug", "%s couldn't change nick", current_nick);
+ origin.send(st.error_reply(stanza, "cancel", "conflict"));
else
- --TODO: malformed-jid
+ local data = rooms:get(room, 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});
+ broadcast_presence_stanza(room, p, '303', to_nick);
+ rooms:remove(room, current_nick);
+ rooms:set(room, to, data);
+ jid_nick:set(from, room, to);
+ pr.attr.from = to;
+ rooms:get(room, to).sessions[from] = pr;
+ broadcast_presence_stanza(room, pr);
+ else
+ --TODO malformed-jid
+ end
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 rooms:get(room, 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
- data = {affiliation='owner', role='moderator', jid=from};
+ 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};
+ data = {affiliation='none', role='participant', jid=from, sessions={[from]=get_filtered_presence(stanza)}};
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
+ send_occupant_list(room, from);
+ pr.attr.from = to;
+ broadcast_presence_stanza(room, pr);
+ send_history(room, from);
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
+ 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"));
- else
- origin.send(st.error_reply(stanza, "cancel", "not-implemented", "Private stanzas not implemented")); -- TODO route private stanza
+ 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);
+ handle_to_occupant(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 = rooms:get(room, 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;
+ core_route_stanza(component, 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
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
- set_subject(current_nick, room, subject);
+ set_subject(current_nick, room, subject); -- TODO use broadcast_message_stanza
else
- broadcast_message(current_nick, room, nil, getText(stanza, {"body"}));
- -- TODO add to discussion history
+ broadcast_message_stanza(room, 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 = jid_nick:get(stanza.attr.from, to);
+ if current_nick then
+ stanza.attr.to = current_nick;
+ 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 jid_nick:get(stanza.attr.from, stanza.attr.to)
+ 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;
+ core_route_stanza(component, 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
-function handle_stanza(origin, stanza)
+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 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
if type == "error" or type == "result" then return; end
handle_to_domain(origin, stanza);
end
-end
-
-module.load_component = function()
- return handle_stanza; -- Return the function that we want to handle incoming stanzas
-end
+end);
module.unload = function()
deregister_component(muc_domain);
projects / prosody.git / blobdiff