-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

--

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

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

--

-- luacheck: ignore 212

local new_sasl = require "prosody.util.sasl".new;

local datamanager = require "prosody.util.datamanager";

local hosts = prosody.hosts;

local allow_storage = module:get_option_boolean("allow_anonymous_storage", false);

-- define auth provider

local provider = {};

function provider.test_password(username, password)

	return nil, "Password based auth not supported.";

end

function provider.get_password(username)

	return nil, "Password not available.";

end

function provider.set_password(username, password)

	return nil, "Password based auth not supported.";

end

function provider.user_exists(username)

	return nil, "Only anonymous users are supported."; -- FIXME check if anonymous user is connected?

end

function provider.create_user(username, password)

	return nil, "Account creation/modification not supported.";

end

function provider.get_sasl_handler()

	local anonymous_authentication_profile = {

		anonymous = function(sasl, username, realm)

			return true; -- for normal usage you should always return true here

		end

	};

	return new_sasl(module.host, anonymous_authentication_profile);

end

function provider.users()

	return next, hosts[module.host].sessions, nil;

end

-- datamanager callback to disable writes

local function dm_callback(username, host, datastore, data)

	if host == module.host then

		return false;

	end

	return username, host, datastore, data;

end

if not module:get_option_boolean("allow_anonymous_s2s", false) then

	module:hook("route/remote", function (event)

		return false; -- Block outgoing s2s from anonymous users

	end, 300);

end

function module.load()

	if not allow_storage then

		datamanager.add_callback(dm_callback);

	end

end

function module.unload()

	if not allow_storage then

		datamanager.remove_callback(dm_callback);

	end

end

module:provides("auth", provider);