New configmanager. Old-style config files still work, but will print …

…a warning

core/configmanager.lua

@@ -1,5 +1,7 @@
 
 local _G = _G;
+local 	setmetatable, loadfile, pcall, rawget, rawset, io = 
+		setmetatable, loadfile, pcall, rawget, rawset, io;
 module "configmanager"
 
 local parsers = {};
@@ -21,6 +23,10 @@ function section_mt(section_name)
 							end };
 end
 
+function getconfig()
+	return config;
+end
+
 function get(host, section, key)
 	local sec = config[host][section];
 	if sec then
@@ -45,15 +51,20 @@ function set(host, section, key, value)
 end
 
 function load(filename, format)
+	format = format or filename:match("%w+$");
 	if parsers[format] and parsers[format].load then
 		local f = io.open(filename);
 		if f then 
-			local ok, err = parsers[format](f:read("*a"));
+			local ok, err = parsers[format].load(f:read("*a"));
 			f:close();
 			return ok, err;
 		end
 	end
-	return false, "no parser";
+	if not format then
+		return nil, "no parser specified";
+	else
+		return false, "no parser";
+	end
 end
 
 function save(filename, format)
@@ -65,21 +76,28 @@ function addparser(format, parser)
 	end
 end
 
+-- Built-in Lua parser
 do
+	local loadstring, pcall, setmetatable = _G.loadstring, _G.pcall, _G.setmetatable;
+	local setfenv, rawget, tostring = _G.setfenv, _G.rawget, _G.tostring;
 	parsers.lua = {};
 	function parsers.lua.load(data)
-		local env = setmetatable({}, { __index = function (t, k)
-											if k:match("^mod_") then
-												return function (settings_table)
+		local env;
+		env = setmetatable({ Host = true; host = true; }, { __index = function (t, k)
+												return rawget(_G, k) or
+														function (settings_table)
 															config[__currenthost or "*"][k] = settings_table;
 														end;
-											end
-											return rawget(_G, k);
+										end,
+								__newindex = function (t, k, v)
+											set(env.__currenthost or "*", "core", k, v);
 										end});
 
 		function env.Host(name)
-			env.__currenthost = name;
+			rawset(env, "__currenthost", name);
+			set(name or "*", "core", "defined", true);
 		end
+		env.host = env.Host;
 
 		local chunk, err = loadstring(data);
 
@@ -95,8 +113,6 @@ do
 			return nil, err;
 		end
 
-
-
 		return true;
 	end
 

main.lua

@@ -4,22 +4,42 @@ local server = require "net.server"
 require "lxp"
 require "socket"
 require "ssl"
-
-function log(type, area, message)
-	print(type, area, message);
+local config = require "core.configmanager"
+
+log = require "util.logger".init("general");
+
+do
+	-- TODO: Check for other formats when we add support for them
+	-- Use lfs? Make a new conf/ dir?
+	local ok, err = config.load("lxmppd.cfg.lua");
+	if not ok then
+		log("error", "Couldn't load config file: %s", err);
+		log("info", "Falling back to old config file format...")
+		ok, err = pcall(dofile, "lxmppd.cfg");
+		if not ok then
+			log("error", "Old config format loading failed too: %s", err);
+		else
+			for _, host in ipairs(_G.config.hosts) do
+				config.set(host, "core", "defined", true);
+			end
+
+			config.set("*", "core", "modules_enabled", _G.config.modules);
+			config.set("*", "core", "ssl", _G.config.ssl_ctx);
+		end
+	end
 end
 
-dofile "lxmppd.cfg"
-
 -- Maps connections to sessions --
 sessions = {};
 hosts = {};
 
-if config.hosts and #config.hosts > 0 then
-	for _, host in pairs(config.hosts) do
+local defined_hosts = config.getconfig();
+
+for host, host_config in pairs(defined_hosts) do
+	if host ~= "*" and (host_config.core.enabled == nil or host_config.core.enabled) then
 		hosts[host] = {type = "local", connected = true, sessions = {}, host = host, s2sout = {} };
 	end
-else error("No hosts defined in the configuration file"); end
+end
 
 -- Load and initialise core modules --
 
@@ -42,21 +62,29 @@ require "util.jid"
 ------------------------------------------------------------------------
 
 -- Initialise modules
-if config.modules and #config.modules > 0 then
-	for _, module in pairs(config.modules) do
+local modules_enabled = config.get("*", "core", "modules_enabled");
+if modules_enabled then
+	for _, module in pairs(modules_enabled) do
 		modulemanager.load(module);
 	end
-else error("No modules enabled in the configuration file"); end
+end
 
 -- setup error handling
 setmetatable(_G, { __index = function (t, k) print("WARNING: ATTEMPT TO READ A NIL GLOBAL!!!", k); error("Attempt to read a non-existent global. Naughty boy.", 2); end, __newindex = function (t, k, v) print("ATTEMPT TO SET A GLOBAL!!!!", tostring(k).." = "..tostring(v)); error("Attempt to set a global. Naughty boy.", 2); end }) --]][][[]][];
 
 local protected_handler = function (conn, data, err) local success, ret = pcall(handler, conn, data, err); if not success then print("ERROR on "..tostring(conn)..": "..ret); conn:close(); end end;
 local protected_disconnect = function (conn, err) local success, ret = pcall(disconnect, conn, err); if not success then print("ERROR on "..tostring(conn).." disconnect: "..ret); conn:close(); end end;
 
+
+local global_ssl_ctx = config.get("*", "core", "ssl");
+if global_ssl_ctx then
+	local default_ssl_ctx = { mode = "server", protocol = "sslv23", capath = "/etc/ssl/certs", verify = "none"; };
+	setmetatable(global_ssl_ctx, { __index = default_ssl_ctx });
+end
+
 -- start listening on sockets
-start("xmppclient", { ssl = config.ssl_ctx })
-start("xmppserver", { ssl = config.ssl_ctx })
+start("xmppclient", { ssl = global_ssl_ctx })
+start("xmppserver", { ssl = global_ssl_ctx })
 
 modulemanager.fire_event("server-started");