# HG changeset patch
# User Waqas Hussain <waqas20@gmail.com>
# Date 1245789423 -18000
# Node ID 141fec125af07e42eae5bc617e4c52c14598a0a6
# Parent  4c7b8b8ab569500e7279cd5933d7c34db84f0b1f
mod_muc: Now based on util.muc

diff -r 4c7b8b8ab569 -r 141fec125af0 plugins/mod_muc.lua
--- a/plugins/mod_muc.lua	Tue Jun 23 23:59:21 2009 +0500
+++ b/plugins/mod_muc.lua	Wed Jun 24 01:37:03 2009 +0500
@@ -1,401 +1,37 @@
--- 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_host = 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;
+local muc_new_room = require "util.muc".new_room;
+local register_component = require "core.componentmanager".register_component;
+local deregister_component = require "core.componentmanager".deregister_component;
+local jid_split = require "util.jid".split;
+local st = require "util.stanza";
 
-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
+local rooms = {};
+local component;
+local host_room = muc_new_room(muc_host);
+host_room.route_stanza = function(room, stanza) core_post_stanza(component, stanza); 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")
+local function get_disco_info(stanza)
+	return st.iq({type='result', id=stanza.attr.id, from=muc_host, 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();
+local function get_disco_items(stanza)
+	local reply = st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
+	for jid, room in pairs(rooms) do
+		reply:tag("item", {jid=jid, name=jid}):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 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
@@ -408,32 +44,36 @@
 			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"));
+		host_room:handle_stanza(origin, stanza);
+		--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)
+component = register_component(muc_host, 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);
+	if to_node then
+		local bare = to_node.."@"..to_host;
+		if to_host == muc_host or bare == muc_host then
+			local room = rooms[bare];
+			if not room then
+				room = muc_new_room(bare);
+				room.route_stanza = function(room, stanza) core_post_stanza(component, stanza); end;
+				rooms[bare] = room;
+			end
+			room:handle_stanza(origin, stanza);
+		else --[[not for us?]] end
+		return;
 	end
+	-- to the main muc domain
+	handle_to_domain(origin, stanza);
 end);
 
 module.unload = function()
-	deregister_component(muc_domain);
+	deregister_component(muc_host);
 end
 module.save = function()
-	return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list};
+	return {rooms = rooms};
 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 {};
+	rooms = data.rooms or {};
 end