mirror of https://github.com/bjc/prosody
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
439 lines
17 KiB
439 lines
17 KiB
-- 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 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;
|
|
|
|
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 = "Chatrooms";
|
|
local history_length = 20;
|
|
|
|
-- 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
|
|
-- history = {preserialized stanzas}
|
|
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 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 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();
|
|
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_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 me;
|
|
local r = rooms:get(room);
|
|
if r then
|
|
for occupant, o_data in pairs(r) do
|
|
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;
|
|
end
|
|
end
|
|
end
|
|
if me then
|
|
stanza:tag("status", {code='110'});
|
|
for jid in pairs(me.sessions) do
|
|
stanza.attr.to = jid;
|
|
core_route_stanza(component, stanza);
|
|
end
|
|
end
|
|
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
|
|
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
|
|
|
|
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;
|
|
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);
|
|
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 then
|
|
log("debug", "%s leaving %s", current_nick, room);
|
|
local data = rooms:get(room, current_nick);
|
|
data.role = 'none';
|
|
broadcast_presence_stanza(room, pr);
|
|
rooms:remove(room, current_nick);
|
|
jid_nick:remove(from, room);
|
|
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);
|
|
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
|
|
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
|
|
--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
|
|
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
|
|
rooms:set(room, to, data);
|
|
jid_nick:set(from, room, to);
|
|
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 not current_nick and type ~= "error" and type ~= "result" 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);
|
|
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;
|
|
-- TODO 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
|
|
|
|
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 from = stanza.attr.from;
|
|
stanza.attr.from = current_nick;
|
|
local subject = getText(stanza, {"subject"});
|
|
if subject then
|
|
set_subject(current_nick, room, subject); -- TODO use broadcast_message_stanza
|
|
else
|
|
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_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
|
|
|