Merge with 0.4
[prosody.git] / plugins / mod_muc.lua
index b82ea37fc63c677d225b4bb751512efef9888aea..38f21b4a43db28ef68d86396bb400edd9d95a2db 100644 (file)
@@ -1,4 +1,13 @@
+-- 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;
@@ -14,7 +23,7 @@ if module:get_host_type() ~= "component" then
 end
 
 local muc_domain = module:get_host();
-local muc_name = "MUCMUCMUC!!!";
+local muc_name = "Chatrooms";
 local history_length = 20;
 
 -- room_name -> room
@@ -62,7 +71,31 @@ function filter_xmlns_from_stanza(stanza, filters)
 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.deserialize(st.preserialize(stanza)), presence_filters);
+       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;
@@ -119,57 +152,9 @@ function set_subject(current_nick, room, subject)
        local msg = st.message({type='groupchat', from=current_nick})
                :tag('subject'):text(subject):up();
        broadcast_message_stanza(room, msg, false);
-       --broadcast_message(current_nick, room, subject or "", nil);
        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();
-       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
-               if not subject and body 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.deserialize(st.preserialize(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.preserialize(stanza));
-                       while #history > history_length do t_remove(history, 1) end
-               end
-       end
-end
 function broadcast_message_stanza(room, stanza, historic)
        local r = rooms:get(room);
        if r then
@@ -182,10 +167,10 @@ function broadcast_message_stanza(room, stanza, historic)
                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.deserialize(st.preserialize(stanza));
+                       -- 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.preserialize(stanza));
+                       t_insert(history, st.clone(st.preserialize(stanza)));
                        while #history > history_length do t_remove(history, 1) end
                end
        end
@@ -220,6 +205,34 @@ function broadcast_presence_stanza(room, stanza, code, nick)
                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;
@@ -234,31 +247,20 @@ function handle_to_occupant(origin, stanza) -- PM, vCards, etc
                if type == "error" then -- error, kick em out!
                        if current_nick then
                                log("debug", "kicking %s from %s", current_nick, room);
-                               local data = rooms:get(room, current_nick);
-                               data.role = 'none';
-                               local pr = st.presence({type='unavailable', from=current_nick}):tag('status'):text('This participant is kicked from the room because he sent an error presence'):up()
-                                       --:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
-                                       --:tag("item", {affiliation=data.affiliation, role=data.role}):up();
-                               broadcast_presence_stanza(room, pr);
-                               --broadcast_presence('unavailable', current_nick, 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, current_nick);
-                               jid_nick:remove(from, 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);
---                                                     log("debug", "rooms: %s", require "util.serialization".serialize(rooms.data));
---                                                     log("debug", "jid_nick: %s", require "util.serialization".serialize(jid_nick.data));
                                local data = rooms:get(room, current_nick);
                                data.role = 'none';
                                broadcast_presence_stanza(room, pr);
-                               --broadcast_presence('unavailable', current_nick, room);
                                rooms:remove(room, current_nick);
                                jid_nick:remove(from, room);
                        end
                elseif not type then -- available
                        if current_nick then
-                               if #pr == #stanza 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;
@@ -272,34 +274,24 @@ function handle_to_occupant(origin, stanza) -- PM, vCards, etc
                                                        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);
---                                                             log("debug", "rooms: %s", require "util.serialization".serialize(rooms.data));
---                                                             log("debug", "jid_nick: %s", require "util.serialization".serialize(jid_nick.data));
                                                                local p = st.presence({type='unavailable', from=current_nick});
-                                                                       --[[:tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
-                                                                               :tag('item', {affiliation=data.affiliation, role=data.role, nick=to_nick}):up()
-                                                                               :tag('status', {code='303'});]]
                                                                broadcast_presence_stanza(room, p, '303', to_nick);
-                                                               --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);
                                                                pr.attr.from = to;
                                                                rooms:get(room, to).sessions[from] = pr;
                                                                broadcast_presence_stanza(room, pr);
---                                                             log("debug", "rooms: %s", require "util.serialization".serialize(rooms.data));
---                                                             log("debug", "jid_nick: %s", require "util.serialization".serialize(jid_nick.data));
-                                                               --broadcast_presence(nil, to, room, nil);
                                                        else
                                                                --TODO malformed-jid
                                                        end
                                                end
                                        end
-                               else -- possible rejoin
-                                       log("debug", "%s had connection replaced", current_nick);
-                                       local pr_ = st.presence({type='unavailable', from=from, to=current_nick}):tag('status'):text('Replaced by new connection');
-                                       handle_to_occupant(origin, pr_); -- send unavailable
-                                       handle_to_occupant(origin, stanza); -- resend available
-                               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
@@ -312,6 +304,7 @@ function handle_to_occupant(origin, stanza) -- PM, vCards, etc
                                        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
@@ -319,55 +312,22 @@ function handle_to_occupant(origin, stanza) -- PM, vCards, etc
                                        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 ~= to then
-                                                               local pres = get_filtered_presence(o_data.sessions[o_data.jid]);
-                                                               pres.attr.to, pres.attr.from = from, occupant;
-                                                               pres
-                                                               --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
+                                       send_occupant_list(room, from);
                                        pr.attr.from = to;
                                        broadcast_presence_stanza(room, pr);
-                                       --broadcast_presence(nil, to, room);
-                                       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=from;
-                                                       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=from}):tag("subject"):text(rooms_info:get(room, 'subject')));
-                                       end
+                                       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 then -- not in room
+       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" then
-               if current_nick then
-                       log("debug", "%s kicked from %s for sending an error message", current_nick, room);
-                       local data = rooms:get(room, to);
-                       data.role = 'none';
-                       local pr = st.presence({type='unavailable', from=current_nick}):tag('status'):text('This participant is kicked from the room because he sent an error message to another occupant'):up()
-                               :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
-                               :tag("item", {affiliation=data.affiliation, role=data.role}):up();
-                       broadcast_presence_stanza(room, pr);
-                       rooms:remove(room, to);
-                       jid_nick:remove(from, room);
-               end
+       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
@@ -376,7 +336,7 @@ function handle_to_occupant(origin, stanza) -- PM, vCards, etc
                        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);
-               else -- recipient not in room
+               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
@@ -406,7 +366,6 @@ function handle_to_room(origin, stanza) -- presence changes and groupchat messag
                        if subject then
                                set_subject(current_nick, room, subject); -- TODO use broadcast_message_stanza
                        else
-                               --broadcast_message(current_nick, room, nil, getText(stanza, {"body"}));
                                broadcast_message_stanza(room, stanza, true);
                        end
                end
@@ -417,9 +376,19 @@ function handle_to_room(origin, stanza) -- presence changes and groupchat messag
                        stanza.attr.to = current_nick;
                        handle_to_occupant(origin, stanza);
                        stanza.attr.to = to;
-               else
+               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"));