-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

-- Copyright (C) 2010 Jeff Mitchell

--

-- This project is MIT/X11 licensed. Please see the

-- COPYING file in the source package for more information.

--

local log = require "util.logger".init("usermanager");

local type = type;

local ipairs = ipairs;

local jid_bare = require "util.jid".bare;

local config = require "core.configmanager";

local cyrus_service_realm = module:get_option("cyrus_service_realm");

local cyrus_service_name = module:get_option("cyrus_service_name");

local cyrus_application_name = module:get_option("cyrus_application_name");

prosody.unlock_globals(); --FIXME: Figure out why this is needed and

						  -- why cyrussasl isn't caught by the sandbox

local cyrus_new = require "util.sasl_cyrus".new;

prosody.lock_globals();

local new_sasl = function(realm)

	return cyrus_new(

		cyrus_service_realm or realm,

		cyrus_service_name or "xmpp",

		cyrus_application_name or "prosody"

	);

end

function new_default_provider(host)

	local provider = { name = "cyrus" };

	log("debug", "initializing default authentication provider for host '%s'", host);

	function provider.test_password(username, password)

		return nil, "Legacy auth not supported with Cyrus SASL.";

	end

	function provider.get_password(username)

		return nil, "Passwords unavailable for Cyrus SASL.";

	end

	function provider.set_password(username, password)

		return nil, "Passwords unavailable for Cyrus SASL.";

	end

	function provider.user_exists(username)

		return true;

	end

	function provider.create_user(username, password)

		return nil, "Account creation/modification not available with Cyrus SASL.";

	end

	function provider.get_sasl_handler()

		local realm = module:get_option("sasl_realm") or module.host;

		return new_sasl(realm);

	end

	function provider.is_admin(jid)

		local admins = config.get(host, "core", "admins");

		if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then

			jid = jid_bare(jid);

			for _,admin in ipairs(admins) do

				if admin == jid then return true; end

			end

		elseif admins then

			log("error", "Option 'admins' for host '%s' is not a table", host);

		end

		return is_admin(jid); -- Test whether it's a global admin instead

	end

	return provider;

end

module:add_item("auth-provider", new_default_provider(module.host));