--- a/mod_ircd/mod_ircd.in.lua	Tue Nov 01 13:52:29 2011 +0100
+++ b/mod_ircd/mod_ircd.in.lua	Tue Nov 01 18:08:15 2011 +0100
@@ -52,9 +52,33 @@
 --c:connect_component(component_jid, component_secret);
 
 local jid = require "util.jid";
+local nodeprep = require "util.encodings".stringprep.nodeprep;
+
+local function parse_line(line)
+	local ret = {};
+	if line:sub(1,1) == ":" then
+		ret.from, line = line:match("^:(%w+)%s+(.*)$");
+	end
+	for part in line:gmatch("%S+") do
+		if part:sub(1,1) == ":" then
+			ret[#ret+1] = line:match(":(.*)$");
+			break
+		end
+		ret[#ret+1]=part;
+	end
+	return ret;
+end
+
+local function build_line(parts)
+	if #parts > 1 then
+		parts[#parts] = ":" ..  parts[#parts];
+	end
+	return (parts.from and ":"..parts.from.." " or "")..table.concat(parts, " ");
+end
 
 local function irc2muc(channel, nick)
-	return jid.join(channel:gsub("^#", ""), muc_server, nick)
+	local room = channel and nodeprep(channel:match("^#(%w+)")) or nil;
+	return jid.join(room, muc_server, nick)
 end
 local function muc2irc(room)
 	local channel, _, nick = jid.split(room);
@@ -94,29 +118,37 @@
 			roster = {} };
 		sessions[conn] = session;
 		function session.data(data)
-			local command, args = data:match("^%s*([^ ]+) *(.*)%s*$");
+			local parts = parse_line(data);
+			module:log("debug", require"util.serialization".serialize(parts));
+			local command = table.remove(parts, 1);
 			if not command then
 				return;
 			end
 			command = command:upper();
 			if not session.nick then
 				if not (command == "USER" or command == "NICK") then
-                                        session.send(":" .. muc_server .. " 451 " .. command .. " :You have not registered")
-                                        return true;
+					module:log("debug", "Client tried to send command %s before registering", command);
+					return session.send{from=muc_server, 451, command, "You have not registered"}
 				end
 			end
 			if commands[command] then
-				local ret = commands[command](session, args);
+				local ret = commands[command](session, parts);
 				if ret then
-					session.send(ret.."\r\n");
+					return session.send(ret);
 				end
 			else
-                                session.send(":" .. muc_server .. " 421 " .. session.nick .. " " .. command .. " :Unknown command")
-				module:log("debug", "Unknown command: %s", command);
+				session.send{from=muc_server, 421, session.nick, command, "Unknown command"};
+				return module:log("debug", "Unknown command: %s", command);
 			end
 		end
 		function session.send(data)
-			return conn:write(data.."\r\n");
+			if type(data) == "string" then
+				return conn:write(data.."\r\n");
+			elseif type(data) == "table" then
+				local line = build_line(data);
+				module:log("debug", line);
+				conn:write(line.."\r\n");
+			end
 		end
 	end
 	if data then
@@ -126,23 +158,30 @@
 
 function irc_listener.ondisconnect(conn, error)
 	local session = sessions[conn];
-	for _, room in pairs(session.rooms) do
-		room:leave("Disconnected");
+	if session then
+		for _, room in pairs(session.rooms) do
+			room:leave("Disconnected");
+		end
+		if session.nick then
+			nicks[session.nick] = nil;
+		end
+		if session.full_jid then
+			jids[session.full_jid] = nil;
+		end
 	end
-	jids[session.full_jid] = nil;
-	nicks[session.nick] = nil;
 	sessions[conn] = nil;
 end
 
-function commands.NICK(session, nick)
+function commands.NICK(session, args)
 	if session.nick then
-                session.send(":"..muc_server.." 484 * "..nick.." :I'm afraid I can't let you do that, "..nick);
+		session.send(":"..muc_server.." 484 * "..nick.." :I'm afraid I can't let you do that, "..session.nick);
 		--TODO Loop throug all rooms and change nick, with help from Verse.
 		return;
 	end
-	nick = nick:match("^[%w_]+");
+	local nick = args[1];
+	nick = nick:gsub("[^%w_]","");
 	if nicks[nick] then
-		session.send(":"..session.host.." 433 * "..nick.." :The nickname "..nick.." is already in use");
+		session.send{from=muc_server, 433, nick, "The nickname "..nick.." is already in use"};
 		return;
 	end
 	local full_jid = jid.join(nick, component_jid, "ircd");
@@ -151,7 +190,8 @@
 	session.nick = nick;
 	session.full_jid = full_jid;
 	session.type = "c2s";
-	session.send(":"..session.host.." 001 "..session.nick.." :Welcome to XMPP via the "..session.host.." gateway "..session.nick);
+	session.send{from = muc_server, 001, nick, "Welcome to XMPP via the "..session.host.." gateway "..session.nick};
+	session.send{from=nick, "MODE", nick, "+i"}; -- why
 end
 
 function commands.USER(session, params)
@@ -159,7 +199,8 @@
 	-- Empty command for now
 end
 
-function commands.JOIN(session, channel)
+function commands.JOIN(session, args)
+	local channel = args[1];
 	local room_jid = irc2muc(channel);
 	print(session.full_jid);
 	local room, err = c:join_room(room_jid, session.nick, { source = session.full_jid } );
@@ -169,8 +210,9 @@
 	session.rooms[channel] = room;
 	room.channel = channel;
 	room.session = session;
-	session.send(":"..session.nick.." JOIN :"..channel);
-	session.send(":"..session.host.." 332 "..session.nick.." "..channel.." :Connection in progress...");
+	session.send{from=session.nick, "JOIN", channel};
+	session.send{from=muc_server, 332, session.nick, channel ,"Connection in progress..."};
+
 	room:hook("message", function(event)
 		if not event.body then return end
 		local nick, body = event.nick, event.body;
@@ -178,7 +220,8 @@
 			if body:sub(1,4) == "/me " then
 				body = "\1ACTION ".. body:sub(5) .. "\1"
 			end
-			session.send(":"..nick.." PRIVMSG "..channel.." :"..body);
+			local type = event.stanza.attr.type;
+			session.send{from=nick, "PRIVMSG", type == "groupchat" and channel or nick, body};
 			--FIXME PM's probably won't work
 		end
 	end);
@@ -187,21 +230,23 @@
 c:hook("groupchat/joined", function(room)
 	local session = room.session or jids[room.opts.source];
 	local channel = room.channel;
+	session.send{from=session.nick.."!"..session.nick, "JOIN", channel};
 	session.send((":%s!%s JOIN %s :"):format(session.nick, session.nick, channel));
 	if room.topic then
-		session.send((":%s 332 %s :%s"):format(session.host, channel, room.topic));
+		session.send{from=muc_server, 332, room.topic};
 	end
 	commands.NAMES(session, channel)
-	--FIXME Ones own mode get's lost
-	--session.send((":%s MODE %s +%s %s"):format(session.host, room.channel, modemap[nick.role], nick.nick));
+	if session.nick.role then
+		session.send{from=muc_server, "MODE", channel, session.nick, modemap[session.nick.role], session.nick}
+	end
 	room:hook("occupant-joined", function(nick)
-		session.send((":%s!%s JOIN :%s"):format(nick.nick, nick.nick, channel));
+		session.send{from=nick.nick.."!"..nick.nick, "JOIN", channel};
 		if nick.role and modemap[nick.role] then
-			session.send((":%s MODE %s +%s %s"):format(session.host, room.channel, modemap[nick.role], nick.nick));
+			session.send{from=nick.nick.."!"..nick.nick, "MODE", channel, modemap[nick.role], nick.nick};
 		end
 	end);
 	room:hook("occupant-left", function(nick)
-		session.send((":%s!%s PART %s :"):format(nick.nick, nick.nick, channel));
+		session.send{from=nick.nick.."!"..nick.nick, "PART", room.channel};
 	end);
 end);
 
@@ -217,53 +262,81 @@
 		table.insert(nicks, nick);
 	end
 	nicks = table.concat(nicks, " ");
-	--:molyb.irc.bnfh.org 353 derp = #grill-bit :derp hyamobi walt snuggles_ E-Rock kng grillbit gunnarbot Frink shedma zagabar zash Mrw00t Appiah J10 lectus peck EricJ soso mackt offer hyarion @pettter MMN-o 
 	session.send((":%s 353 %s = %s :%s"):format(session.host, session.nick, channel, nicks));
 	session.send((":%s 366 %s %s :End of /NAMES list."):format(session.host, session.nick, channel));
 	session.send(":"..session.host.." 353 "..session.nick.." = "..channel.." :"..nicks);
 end
 
-function commands.PART(session, channel)
-	local channel, part_message = channel:match("^([^:]+):?(.*)$");
+function commands.PART(session, args)
+	local channel, part_message = unpack(args);
 	channel = channel:match("^([%S]*)");
 	session.rooms[channel]:leave(part_message);
 	session.send(":"..session.nick.." PART :"..channel);
 end
 
-function commands.PRIVMSG(session, message)
-	local channel, message = message:match("^(%S+) :(.+)$");
-	if message and #message > 0 and session.rooms[channel] then
+function commands.PRIVMSG(session, args)
+	local channel, message = unpack(args);
+	if message and #message > 0 then
 		if message:sub(1,8) == "\1ACTION " then
 			message = "/me ".. message:sub(9,-2)
 		end
-		module:log("debug", "%s sending PRIVMSG \"%s\" to %s", session.nick, message, channel);
-		session.rooms[channel]:send_message(message);
+		-- TODO clean out invalid chars
+		if channel:sub(1,1) == "#" then
+			if session.rooms[channel] then
+				module:log("debug", "%s sending PRIVMSG \"%s\" to %s", session.nick, message, channel);
+				session.rooms[channel]:send_message(message);
+			end
+		else -- private message
+			local nick = channel;
+			module:log("debug", "PM to %s", nick);
+			for channel, room in pairs(session.rooms) do
+				module:log("debug", "looking for %s in %s", nick, channel);
+				if room.occupants[nick] then
+					module:log("debug", "found %s in %s", nick, channel);
+					local who = room.occupants[nick];
+					-- FIXME PMs in verse
+					--room:send_private_message(nick, message);
+					local pm = st.message({type="chat",to=who.jid}, message);
+					module:log("debug", "sending PM to %s: %s", nick, tostring(pm));
+					room:send(pm)
+					break
+				end
+			end
+		end
 	end
 end
 
-function commands.PING(session, server)
-	session.send(":"..session.host..": PONG "..server);
+function commands.PING(session, args)
+	session.send{from=muc_server, "PONG", args[1]};
 end
 
-function commands.WHO(session, channel)
+function commands.WHO(session, args)
+	local channel = args[1];
 	if session.rooms[channel] then
 		local room = session.rooms[channel]
 		for nick in pairs(room.occupants) do
 			--n=MattJ 91.85.191.50 irc.freenode.net MattJ H :0 Matthew Wild
-			session.send(":"..session.host.." 352 "..session.nick.." "..channel.." "..nick.." "..nick.." "..session.host.." "..nick.." H :0 "..nick);
+			session.send{from=muc_server, 352, session.nick, channel, nick, nick, muc_server, nick, "H", "0 "..nick}
 		end
-		session.send(":"..session.host.." 315 "..session.nick.." "..channel.. " :End of /WHO list");
+		session.send{from=muc_server, 315, session.nick, channel, "End of /WHO list"};
 	end
 end
 
-function commands.MODE(session, channel)
-	session.send(":"..session.host.." 324 "..session.nick.." "..channel.." +J"); 
+function commands._MODE(session, args) -- FIXME
+	local channel, target = unpack(args);
+	if target then
+		-- do stuff?
+		--room:set_affiliation(...)
+	else
+		-- What's 324? And +J ?
+		session.send{from=muc_server, 324, session.nick, channel, "+J"}
+	end
 end
 
-function commands.QUIT(session, message)
-	session.send("ERROR :Closing Link: "..session.nick);
+function commands.QUIT(session, args)
+	session.send{"ERROR", "Closing Link: "..session.nick};
 	for _, room in pairs(session.rooms) do
-		room:leave(message);
+		room:leave(args[1]);
 	end
 	jids[session.full_jid] = nil;
 	nicks[session.nick] = nil;