#!/usr/bin/env lua

-- 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.

--

-- Will be modified by configure script if run --

CFG_SOURCEDIR=nil;

CFG_CONFIGDIR=os.getenv("PROSODY_CFGDIR");

CFG_PLUGINDIR=nil;

CFG_DATADIR=os.getenv("PROSODY_DATADIR");

-- -- -- -- -- -- -- ---- -- -- -- -- -- -- -- --

if CFG_SOURCEDIR then

	package.path = CFG_SOURCEDIR.."/?.lua;"..package.path;

	package.cpath = CFG_SOURCEDIR.."/?.so;"..package.cpath;

end

package.path = package.path..";"..(CFG_SOURCEDIR or ".").."/fallbacks/?.lua";

package.cpath = package.cpath..";"..(CFG_SOURCEDIR or ".").."/fallbacks/?.so";

if CFG_DATADIR then

	if os.getenv("HOME") then

		CFG_DATADIR = CFG_DATADIR:gsub("^~", os.getenv("HOME"));

	end

end

-- Required to be able to find packages installed with luarocks

pcall(require, "luarocks.require")

config = require "core.configmanager"

do

	-- TODO: Check for other formats when we add support for them

	-- Use lfs? Make a new conf/ dir?

	local ok, level, err = config.load((CFG_CONFIGDIR or ".").."/prosody.cfg.lua");

	if not ok then

		print("\n");

		print("**************************");

		if level == "parser" then

			print("A problem occured while reading the config file "..(CFG_CONFIGDIR or ".").."/prosody.cfg.lua");

			local err_line, err_message = tostring(err):match("%[string .-%]:(%d*): (.*)");

			print("Error"..(err_line and (" on line "..err_line) or "")..": "..(err_message or tostring(err)));

			print("");

		elseif level == "file" then

			print("Prosody was unable to find the configuration file.");

			print("We looked for: "..(CFG_CONFIGDIR or ".").."/prosody.cfg.lua");

			print("A sample config file is included in the Prosody download called prosody.cfg.lua.dist");

			print("Copy or rename it to prosody.cfg.lua and edit as necessary.");

		end

		print("More help on configuring Prosody can be found at http://prosody.im/doc/configure");

		print("Good luck!");

		print("**************************");

		print("");

		os.exit(1);

	end

end

--- Initialize logging

require "core.loggingmanager"

--- Check runtime dependencies

require "util.dependencies"

--- Load socket framework

local server = require "net.server"

bare_sessions = {};

full_sessions = {};

hosts = {};

-- Global 'prosody' object

prosody = {};

local prosody = prosody;

prosody.bare_sessions = bare_sessions;

prosody.full_sessions = full_sessions;

prosody.hosts = hosts;

prosody.paths = { source = CFG_SOURCEDIR, config = CFG_CONFIGDIR, 

                  plugins = CFG_PLUGINDIR, data = CFG_DATADIR };

prosody.arg = arg;

prosody.events = require "util.events".new();

-- Try to determine version

local version_file = io.open((CFG_SOURCEDIR or ".").."/prosody.version");

if version_file then

	prosody.version = version_file:read("*a"):gsub("%s*$", "");

	version_file:close();

	if #prosody.version == 12 and prosody.version:match("^[a-f0-9]+$") then

		prosody.version = "hg:"..prosody.version;

	end

else

	prosody.version = "unknown";

end

log("info", "Hello and welcome to Prosody version %s", prosody.version);

--- Load and initialise core modules

require "util.import"

require "core.xmlhandlers"

require "core.rostermanager"

require "core.eventmanager"

require "core.hostmanager"

require "core.modulemanager"

require "core.usermanager"

require "core.sessionmanager"

require "core.stanza_router"

require "util.array"

require "util.iterators"

require "util.timer"

-- Commented to protect us from 

-- the second kind of people

--[[ 

pcall(require, "remdebug.engine");

if remdebug then remdebug.engine.start() end

]]

local cl = require "net.connlisteners";

require "util.stanza"

require "util.jid"

------------------------------------------------------------------------

------------- Begin code without a home ---------------------

local data_path = config.get("*", "core", "data_path") or CFG_DATADIR or "data";

require "util.datamanager".set_data_path(data_path);

require "util.datamanager".add_callback(function(username, host, datastore, data)

	if config.get(host, "core", "anonymous_login") then

		return false;

	end

	return username, host, datastore, data;

end);

----------- End of out-of-place code --------------

-- Function to reload the config file

function prosody.reload_config()

	log("info", "Reloading configuration file");

	prosody.events.fire_event("reloading-config");

	local ok, level, err = config.load((rawget(_G, "CFG_CONFIGDIR") or ".").."/prosody.cfg.lua");

	if not ok then

		if level == "parser" then

			log("error", "There was an error parsing the configuration file: %s", tostring(err));

		elseif level == "file" then

			log("error", "Couldn't read the config file when trying to reload: %s", tostring(err));

		end

	end

end

-- Function to reopen logfiles

function prosody.reopen_logfiles()

	log("info", "Re-opening log files");

	eventmanager.fire_event("reopen-log-files"); -- Handled by appropriate log sinks

	prosody.events.fire_event("reopen-log-files");

end

-- Function to initiate prosody shutdown

function prosody.shutdown(reason)

	log("info", "Shutting down: %s", reason or "unknown reason");

	prosody.events.fire_event("server-stopping", {reason = reason});

	server.setquitting(true);

end

-- Signal to modules that we are ready to start

eventmanager.fire_event("server-starting");

prosody.events.fire_event("server-starting");

-- Load SSL settings from config, and create a ctx table

local global_ssl_ctx = ssl and 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

function net_activate_ports(option, listener, default, conntype)

	local ports = config.get("*", "core", option.."_ports") or default;

	if type(ports) == "number" then ports = {ports} end;

	if type(ports) ~= "table" then

		log("error", "core."..option.." is not a table");

	else

		for _, port in ipairs(ports) do

			if type(port) ~= "number" then

				log("error", "Non-numeric "..option.."_ports: "..tostring(port));

			else

				cl.start(listener, { 

					ssl = conntype ~= "tcp" and global_ssl_ctx,

					port = port,

					interface = config.get("*", "core", option.."_interface") 

						or cl.get(listener).default_interface 

						or config.get("*", "core", "interface"),

					type = conntype

				});

			end

		end

	end

end

net_activate_ports("c2s", "xmppclient", {5222}, (global_ssl_ctx and "tls") or "tcp");

net_activate_ports("s2s", "xmppserver", {5269}, "tcp");

net_activate_ports("component", "xmppcomponent", {}, "tcp");

net_activate_ports("legacy_ssl", "xmppclient", {}, "ssl");

if cl.get("console") then

	cl.start("console", { interface = config.get("*", "core", "console_interface") or "127.0.0.1" })

end

-- Catch global accesses --

local locked_globals_mt = { __index = function (t, k) error("Attempt to read a non-existent global '"..k.."'", 2); end, __newindex = function (t, k, v) error("Attempt to set a global: "..tostring(k).." = "..tostring(v), 2); end }

function prosody.unlock_globals()

	setmetatable(_G, nil);

end

function prosody.lock_globals()

	setmetatable(_G, locked_globals_mt);

end

-- And lock now...

prosody.lock_globals();

eventmanager.fire_event("server-started");

prosody.events.fire_event("server-started");

-- Error handler for errors that make it this far

local function catch_uncaught_error(err)

	if err:match("%d*: interrupted!$") then

		return "quitting";

	end

	log("error", "Top-level error, please report:\n%s", tostring(err));

	local traceback = debug.traceback("", 2);

	if traceback then

		log("error", "%s", traceback);

	end

	prosody.events.fire_event("very-bad-error", {error = err, traceback = traceback});

end

while select(2, xpcall(server.loop, catch_uncaught_error)) ~= "quitting" do

	socket.sleep(0.2);

end

log("info", "Shutdown status: Cleaning up");

prosody.events.fire_event("server-cleanup");

-- Ok, we're quitting I know, but we

-- need to do some tidying before we go :)

server.setquitting(false);

log("info", "Shutdown status: Closing all active sessions");

for hostname, host in pairs(hosts) do

	log("debug", "Shutdown status: Closing client connections for %s", hostname)

	if host.sessions then

		for username, user in pairs(host.sessions) do

			for resource, session in pairs(user.sessions) do

				log("debug", "Closing connection for %s@%s/%s", username, hostname, resource);

				session:close("system-shutdown");

			end

		end

	end

	log("debug", "Shutdown status: Closing outgoing s2s connections from %s", hostname);

	if host.s2sout then

		for remotehost, session in pairs(host.s2sout) do

			if session.close then

				session:close("system-shutdown");

			else

				log("warn", "Unable to close outgoing s2s session to %s, no session:close()?!", remotehost);

			end

		end

	end

end

log("info", "Shutdown status: Closing all server connections");

server.closeall();

server.setquitting(true);

eventmanager.fire_event("server-stopped");

prosody.events.fire_event("server-stopped");

log("info", "Shutdown status: Complete!");