-- Prosody IM v0.2

-- Copyright (C) 2008 Matthew Wild

-- Copyright (C) 2008 Waqas Hussain

-- 

-- This program is free software; you can redistribute it and/or

-- modify it under the terms of the GNU General Public License

-- as published by the Free Software Foundation; either version 2

-- of the License, or (at your option) any later version.

-- 

-- This program is distributed in the hope that it will be useful,

-- but WITHOUT ANY WARRANTY; without even the implied warranty of

-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

-- GNU General Public License for more details.

-- 

-- You should have received a copy of the GNU General Public License

-- along with this program; if not, write to the Free Software

-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

--

local fatal;

local function softreq(...) local ok, lib =  pcall(require, ...); if ok then return lib; else return nil; end end

local function missingdep(name, sources, msg)

	print("");

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

	print("Prosody was unable to find "..tostring(name));

	print("This package can be obtained in the following ways:");

	print("");

	for k,v in pairs(sources) do

		print("", k, v);

	end

	print("");

	print(msg or (name.." is required for Prosody to run, so we will now exit."));

	print("More help can be found on our website, at http://prosody.im/doc/depends");

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

	print("");

end

local lxp = softreq "lxp"

if not lxp then

	missingdep("luaexpat", { ["Ubuntu 8.04 (Hardy)"] = "sudo apt-get install liblua5.1-expat0"; ["luarocks"] = "luarocks install luaexpat"; });

	fatal = true;

end

local socket = softreq "socket"

if not socket then

	missingdep("luasocket", { ["Ubuntu 8.04 (Hardy)"] = "sudo apt-get install liblua5.1-socket2"; ["luarocks"] = "luarocks install luasocket"; });

	fatal = true;

end

local ssl = softreq "ssl"

if not ssl then

	if config.get("*", "core", "run_without_ssl") then

		log("warn", "Running without SSL support because run_without_ssl is defined in the config");

	else

		missingdep("LuaSec", { ["Source"] = "http://www.inf.puc-rio.br/~brunoos/luasec/" }, "SSL/TLS support will not be available");

	end

end

if fatal then os.exit(1); end