diff options
| -rw-r--r-- | plugins/mod_muc.lua | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/plugins/mod_muc.lua b/plugins/mod_muc.lua new file mode 100644 index 00000000..adeffacf --- /dev/null +++ b/plugins/mod_muc.lua @@ -0,0 +1,218 @@ +
+
+local register_component = require "core.componentmanager".register_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!!!";
+
+local rooms = multitable_new();
+local jid_nick = multitable_new();
+local rooms_info = multitable_new();
+
+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 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 = {affiliation='none', role='participant', jid=from};
+ 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);
+ 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
+ broadcast_message(current_nick, room, getText(stanza, {"subject"}), getText(stanza, {"body"}));
+ 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);
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