githubFork/roundcubemail.git

			@@ -5,9 +5,12 @@
			\| program/include/rcmail.php \|
			\| \|
			\| This file is part of the Roundcube Webmail client \|
			\| Copyright (C) 2008-2011, The Roundcube Dev Team \|
			\| Copyright (C) 2011, Kolab Systems AG \|
			\| Licensed under the GNU GPL \|
			\| Copyright (C) 2008-2012, The Roundcube Dev Team \|
			\| Copyright (C) 2011-2012, Kolab Systems AG \|
			\| \|
			\| Licensed under the GNU General Public License version 3 or \|
			\| any later version with exceptions for skins & plugins. \|
			\| See the README file for a full license statement. \|
			\| \|
			\| PURPOSE: \|
			\| Application class providing core functions and holding \|
			@@ -27,7 +30,7 @@
			*
			* @package Core
			*/
			class rcmail
			class rcmail extends rcube
			{
			/**
			* Main tasks.
			@@ -35,76 +38,6 @@
			* @var array
			*/
			static public $main_tasks = array('mail','settings','addressbook','login','logout','utils','dummy');

			/**
			* Singleton instace of rcmail
			*
			* @var rcmail
			*/
			static private $instance;

			/**
			* Stores instance of rcube_config.
			*
			* @var rcube_config
			*/
			public $config;

			/**
			* Stores rcube_user instance.
			*
			* @var rcube_user
			*/
			public $user;

			/**
			* Instace of database class.
			*
			* @var rcube_mdb2
			*/
			public $db;

			/**
			* Instace of Memcache class.
			*
			* @var rcube_mdb2
			*/
			public $memcache;

			/**
			* Instace of rcube_session class.
			*
			* @var rcube_session
			*/
			public $session;

			/**
			* Instance of rcube_smtp class.
			*
			* @var rcube_smtp
			*/
			public $smtp;

			/**
			* Instance of rcube_storage class.
			*
			* @var rcube_storage
			*/
			public $storage;

			/**
			* Instance of rcube_template class.
			*
			* @var rcube_template
			*/
			public $output;

			/**
			* Instance of rcube_plugin_api.
			*
			* @var rcube_plugin_api
			*/
			public $plugins;

			/**
			* Current task.
			@@ -121,11 +54,8 @@
			public $action = '';
			public $comm_path = './';

			private $texts;
			private $address_books = array();
			private $caches = array();
			private $action_map = array();
			private $shutdown_functions = array();


			/**
			@@ -135,7 +65,7 @@
			*/
			static function get_instance()
			{
			if (!self::$instance) {
			if (!self::$instance \|\| !is_a(self::$instance, 'rcmail')) {
			self::$instance = new rcmail();
			self::$instance->startup(); // init AFTER object was linked with self::$instance
			}
			@@ -145,32 +75,12 @@


			/**
			* Private constructor
			*/
			private function __construct()
			{
			// load configuration
			$this->config = new rcube_config();

			register_shutdown_function(array($this, 'shutdown'));
			}


			/**
			* Initial startup function
			* to register session, create database and imap connections
			*/
			private function startup()
			protected function startup()
			{
			// initialize syslog
			if ($this->config->get('log_driver') == 'syslog') {
			$syslog_id = $this->config->get('syslog_id', 'roundcube');
			$syslog_facility = $this->config->get('syslog_facility', LOG_USER);
			openlog($syslog_id, LOG_ODELAY, $syslog_facility);
			}

			// connect to database
			$this->get_dbh();
			$this->init(self::INIT_WITH_DB \| self::INIT_WITH_PLUGINS);

			// start session
			$this->session_init();
			@@ -182,8 +92,8 @@
			$this->session_configure();

			// set task and action properties
			$this->set_task(get_input_value('_task', RCUBE_INPUT_GPC));
			$this->action = asciiwords(get_input_value('_action', RCUBE_INPUT_GPC));
			$this->set_task(rcube_ui::get_input_value('_task', rcube_ui::INPUT_GPC));
			$this->action = asciiwords(rcube_ui::get_input_value('_action', rcube_ui::INPUT_GPC));

			// reset some session parameters when changing task
			if ($this->task != 'utils') {
			@@ -199,11 +109,9 @@
			else
			$GLOBALS['OUTPUT'] = $this->load_gui(!empty($_REQUEST['_framed']));

			// create plugin API and load plugins
			$this->plugins = rcube_plugin_api::get_instance();

			// init plugins
			$this->plugins->init();
			// load plugins
			$this->plugins->init($this, $this->task);
			$this->plugins->load_plugins((array)$this->config->get('plugins', array()), array('filesystem_attachments', 'jqueryui'));
			}


			@@ -255,144 +163,6 @@


			/**
			* Check the given string and return a valid language code
			*
			* @param string Language code
			* @return string Valid language code
			*/
			private function language_prop($lang)
			{
			static $rcube_languages, $rcube_language_aliases;

			// user HTTP_ACCEPT_LANGUAGE if no language is specified
			if (empty($lang) \|\| $lang == 'auto') {
			$accept_langs = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
			$lang = str_replace('-', '_', $accept_langs[0]);
			}

			if (empty($rcube_languages)) {
			@include(INSTALL_PATH . 'program/localization/index.inc');
			}

			// check if we have an alias for that language
			if (!isset($rcube_languages[$lang]) && isset($rcube_language_aliases[$lang])) {
			$lang = $rcube_language_aliases[$lang];
			}
			// try the first two chars
			else if (!isset($rcube_languages[$lang])) {
			$short = substr($lang, 0, 2);

			// check if we have an alias for the short language code
			if (!isset($rcube_languages[$short]) && isset($rcube_language_aliases[$short])) {
			$lang = $rcube_language_aliases[$short];
			}
			// expand 'nn' to 'nn_NN'
			else if (!isset($rcube_languages[$short])) {
			$lang = $short.'_'.strtoupper($short);
			}
			}

			if (!isset($rcube_languages[$lang]) \|\| !is_dir(INSTALL_PATH . 'program/localization/' . $lang)) {
			$lang = 'en_US';
			}

			return $lang;
			}


			/**
			* Get the current database connection
			*
			* @return rcube_mdb2 Database connection object
			*/
			public function get_dbh()
			{
			if (!$this->db) {
			$config_all = $this->config->all();

			$this->db = new rcube_mdb2($config_all['db_dsnw'], $config_all['db_dsnr'], $config_all['db_persistent']);
			$this->db->sqlite_initials = INSTALL_PATH . 'SQL/sqlite.initial.sql';
			$this->db->set_debug((bool)$config_all['sql_debug']);
			}

			return $this->db;
			}


			/**
			* Get global handle for memcache access
			*
			* @return object Memcache
			*/
			public function get_memcache()
			{
			if (!isset($this->memcache)) {
			// no memcache support in PHP
			if (!class_exists('Memcache')) {
			$this->memcache = false;
			return false;
			}

			$this->memcache = new Memcache;
			$this->mc_available = 0;

			// add alll configured hosts to pool
			$pconnect = $this->config->get('memcache_pconnect', true);
			foreach ($this->config->get('memcache_hosts', array()) as $host) {
			list($host, $port) = explode(':', $host);
			if (!$port) $port = 11211;
			$this->mc_available += intval($this->memcache->addServer($host, $port, $pconnect, 1, 1, 15, false, array($this, 'memcache_failure')));
			}

			// test connection and failover (will result in $this->mc_available == 0 on complete failure)
			$this->memcache->increment('__CONNECTIONTEST__', 1); // NOP if key doesn't exist

			if (!$this->mc_available)
			$this->memcache = false;
			}

			return $this->memcache;
			}

			/**
			* Callback for memcache failure
			*/
			public function memcache_failure($host, $port)
			{
			static $seen = array();

			// only report once
			if (!$seen["$host:$port"]++) {
			$this->mc_available--;
			raise_error(array('code' => 604, 'type' => 'db',
			'line' => __LINE__, 'file' => __FILE__,
			'message' => "Memcache failure on host $host:$port"),
			true, false);
			}
			}


			/**
			* Initialize and get cache object
			*
			* @param string $name Cache identifier
			* @param string $type Cache type ('db', 'apc' or 'memcache')
			* @param int $ttl Expiration time for cache items in seconds
			* @param bool $packed Enables/disables data serialization
			*
			* @return rcube_cache Cache object
			*/
			public function get_cache($name, $type='db', $ttl=0, $packed=true)
			{
			if (!isset($this->caches[$name])) {
			$this->caches[$name] = new rcube_cache($type, $_SESSION['user_id'], $name, $ttl, $packed);
			}

			return $this->caches[$name];
			}


			/**
			* Return instance of the internal address book class
			*
			* @param string Address book identifier
			@@ -421,7 +191,7 @@
			$contacts = new rcube_ldap($ldap_config[$id], $this->config->get('ldap_debug'), $this->config->mail_domain($_SESSION['storage_host']));
			}
			else if ($id === '0') {
			$contacts = new rcube_contacts($this->db, $this->user->ID);
			$contacts = new rcube_contacts($this->db, $this->get_user_id());
			}
			else {
			$plugin = $this->plugins->exec_hook('addressbook_get', array('id' => $id, 'writeable' => $writeable));
			@@ -442,12 +212,16 @@
			}

			if (!$contacts) {
			raise_error(array(
			self::raise_error(array(
			'code' => 700, 'type' => 'php',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "Addressbook source ($id) not found!"),
			true, true);
			}

			// set configured sort order
			if ($sort_col = $this->config->get('addressbook_sort_col'))
			$contacts->set_sort_order($sort_col);

			// add to the 'books' array for shutdown function
			$this->address_books[$id] = $contacts;
			@@ -473,10 +247,10 @@
			// We are using the DB address book
			if ($abook_type != 'ldap') {
			if (!isset($this->address_books['0']))
			$this->address_books['0'] = new rcube_contacts($this->db, $this->user->ID);
			$this->address_books['0'] = new rcube_contacts($this->db, $this->get_user_id());
			$list['0'] = array(
			'id' => '0',
			'name' => rcube_label('personaladrbook'),
			'name' => $this->gettext('personaladrbook'),
			'groups' => $this->address_books['0']->groups,
			'readonly' => $this->address_books['0']->readonly,
			'autocomplete' => in_array('sql', $autocomplete),
			@@ -486,7 +260,11 @@

			if ($ldap_config) {
			$ldap_config = (array) $ldap_config;
			foreach ($ldap_config as $id => $prop)
			foreach ($ldap_config as $id => $prop) {
			// handle misconfiguration
			if (empty($prop) \|\| !is_array($prop)) {
			continue;
			}
			$list[$id] = array(
			'id' => $id,
			'name' => $prop['name'],
			@@ -495,6 +273,7 @@
			'hidden' => $prop['hidden'],
			'autocomplete' => in_array($id, $autocomplete)
			);
			}
			}

			$plugin = $this->plugins->exec_hook('addressbooks_list', array('sources' => $list));
			@@ -519,13 +298,13 @@
			* environment vars according to the current session and configuration
			*
			* @param boolean True if this request is loaded in a (i)frame
			* @return rcube_template Reference to HTML output object
			* @return rcube_output_html Reference to HTML output object
			*/
			public function load_gui($framed = false)
			{
			// init output page
			if (!($this->output instanceof rcube_template))
			$this->output = new rcube_template($this->task, $framed);
			if (!($this->output instanceof rcube_output_html))
			$this->output = new rcube_output_html($this->task, $framed);

			// set keep-alive/check-recent interval
			if ($this->session && ($keep_alive = $this->session->get_keep_alive())) {
			@@ -552,174 +331,14 @@
			/**
			* Create an output object for JSON responses
			*
			* @return rcube_json_output Reference to JSON output object
			* @return rcube_output_json Reference to JSON output object
			*/
			public function json_init()
			{
			if (!($this->output instanceof rcube_json_output))
			$this->output = new rcube_json_output($this->task);
			if (!($this->output instanceof rcube_output_json))
			$this->output = new rcube_output_json($this->task);

			return $this->output;
			}


			/**
			* Create SMTP object and connect to server
			*
			* @param boolean True if connection should be established
			*/
			public function smtp_init($connect = false)
			{
			$this->smtp = new rcube_smtp();

			if ($connect)
			$this->smtp->connect();
			}


			/**
			* Initialize and get storage object
			*
			* @return rcube_storage Storage object
			*/
			public function get_storage()
			{
			// already initialized
			if (!is_object($this->storage)) {
			$this->storage_init();
			}

			return $this->storage;
			}


			/**
			* Connect to the IMAP server with stored session data.
			*
			* @return bool True on success, False on error
			* @deprecated
			*/
			public function imap_connect()
			{
			return $this->storage_connect();
			}


			/**
			* Initialize IMAP object.
			*
			* @deprecated
			*/
			public function imap_init()
			{
			$this->storage_init();
			}


			/**
			* Initialize storage object
			*/
			public function storage_init()
			{
			// already initialized
			if (is_object($this->storage)) {
			return;
			}

			$driver = $this->config->get('storage_driver', 'imap');
			$driver_class = "rcube_{$driver}";

			if (!class_exists($driver_class)) {
			raise_error(array(
			'code' => 700, 'type' => 'php',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "Storage driver class ($driver) not found!"),
			true, true);
			}

			// Initialize storage object
			$this->storage = new $driver_class;

			// for backward compat. (deprecated, will be removed)
			$this->imap = $this->storage;

			// enable caching of mail data
			$storage_cache = $this->config->get("{$driver}_cache");
			$messages_cache = $this->config->get('messages_cache');
			// for backward compatybility
			if ($storage_cache === null && $messages_cache === null && $this->config->get('enable_caching')) {
			$storage_cache = 'db';
			$messages_cache = true;
			}

			if ($storage_cache)
			$this->storage->set_caching($storage_cache);
			if ($messages_cache)
			$this->storage->set_messages_caching(true);

			// set pagesize from config
			$pagesize = $this->config->get('mail_pagesize');
			if (!$pagesize) {
			$pagesize = $this->config->get('pagesize', 50);
			}
			$this->storage->set_pagesize($pagesize);

			// set class options
			$options = array(
			'auth_type' => $this->config->get("{$driver}_auth_type", 'check'),
			'auth_cid' => $this->config->get("{$driver}_auth_cid"),
			'auth_pw' => $this->config->get("{$driver}_auth_pw"),
			'debug' => (bool) $this->config->get("{$driver}_debug"),
			'force_caps' => (bool) $this->config->get("{$driver}_force_caps"),
			'timeout' => (int) $this->config->get("{$driver}_timeout"),
			'skip_deleted' => (bool) $this->config->get('skip_deleted'),
			'driver' => $driver,
			);

			if (!empty($_SESSION['storage_host'])) {
			$options['host'] = $_SESSION['storage_host'];
			$options['user'] = $_SESSION['username'];
			$options['port'] = $_SESSION['storage_port'];
			$options['ssl'] = $_SESSION['storage_ssl'];
			$options['password'] = $this->decrypt($_SESSION['password']);
			// set 'imap_host' for backwards compatibility
			$_SESSION[$driver.'_host'] = &$_SESSION['storage_host'];
			}

			$options = $this->plugins->exec_hook("storage_init", $options);

			$this->storage->set_options($options);
			$this->set_storage_prop();
			}


			/**
			* Connect to the mail storage server with stored session data
			*
			* @return bool True on success, False on error
			*/
			public function storage_connect()
			{
			$storage = $this->get_storage();

			if ($_SESSION['storage_host'] && !$storage->is_connected()) {
			$host = $_SESSION['storage_host'];
			$user = $_SESSION['username'];
			$port = $_SESSION['storage_port'];
			$ssl = $_SESSION['storage_ssl'];
			$pass = $this->decrypt($_SESSION['password']);

			if (!$storage->connect($host, $user, $pass, $port, $ssl)) {
			if ($this->output)
			$this->output->show_message($storage->get_error_code() == -1 ? 'storageerror' : 'sessionerror', 'error');
			}
			else {
			$this->set_storage_prop();
			return $storage->is_connected();
			}
			}

			return false;
			}


			@@ -745,7 +364,7 @@
			ini_set('session.gc_maxlifetime', $lifetime * 2);
			}

			ini_set('session.cookie_secure', rcube_https_check());
			ini_set('session.cookie_secure', rcube_ui::https_check());
			ini_set('session.name', $sess_name ? $sess_name : 'roundcube_sessid');
			ini_set('session.use_cookies', 1);
			ini_set('session.use_only_cookies', 1);
			@@ -754,9 +373,8 @@
			// use database for storing session data
			$this->session = new rcube_session($this->get_dbh(), $this->config);

			$this->session->register_gc_handler('rcmail_temp_gc');
			if ($this->config->get('enable_caching'))
			$this->session->register_gc_handler('rcmail_cache_gc');
			$this->session->register_gc_handler(array($this, 'temp_gc'));
			$this->session->register_gc_handler(array($this, 'cache_gc'));

			// start PHP session (if not in CLI mode)
			if ($_SERVER['REMOTE_ADDR'])
			@@ -765,6 +383,10 @@
			// set initial session vars
			if (!$_SESSION['user_id'])
			$_SESSION['temp'] = true;

			// restore skin selection after logout
			if ($_SESSION['temp'] && !empty($_SESSION['skin']))
			$this->config->set('skin', $_SESSION['skin']);
			}


			@@ -827,7 +449,7 @@
			if (!$allowed)
			return false;
			}
			else if (!empty($config['default_host']) && $host != rcube_parse_host($config['default_host']))
			else if (!empty($config['default_host']) && $host != self::parse_host($config['default_host']))
			return false;

			// parse $host URL
			@@ -851,9 +473,9 @@
			// Check if we need to add domain
			if (!empty($config['username_domain']) && strpos($username, '@') === false) {
			if (is_array($config['username_domain']) && isset($config['username_domain'][$host]))
			$username .= '@'.rcube_parse_host($config['username_domain'][$host], $host);
			$username .= '@'.self::parse_host($config['username_domain'][$host], $host);
			else if (is_string($config['username_domain']))
			$username .= '@'.rcube_parse_host($config['username_domain'], $host);
			$username .= '@'.self::parse_host($config['username_domain'], $host);
			}

			// Convert username to lowercase. If storage backend
			@@ -914,7 +536,7 @@
			$user = $created;
			}
			else {
			raise_error(array(
			self::raise_error(array(
			'code' => 620, 'type' => 'php',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "Failed to create a user record. Maybe aborted by a plugin?"
			@@ -922,7 +544,7 @@
			}
			}
			else {
			raise_error(array(
			self::raise_error(array(
			'code' => 621, 'type' => 'php',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "Access denied for new user $username. 'auto_create_user' is disabled"
			@@ -969,28 +591,6 @@


			/**
			* Set storage parameters.
			* This must be done AFTER connecting to the server!
			*/
			private function set_storage_prop()
			{
			$storage = $this->get_storage();

			$storage->set_charset($this->config->get('default_charset', RCMAIL_CHARSET));

			if ($default_folders = $this->config->get('default_folders')) {
			$storage->set_default_folders($default_folders);
			}
			if (isset($_SESSION['mbox'])) {
			$storage->set_folder($_SESSION['mbox']);
			}
			if (isset($_SESSION['page'])) {
			$storage->set_page($_SESSION['page']);
			}
			}


			/**
			* Auto-select IMAP host based on the posted login information
			*
			* @return string Selected IMAP host
			@@ -1001,7 +601,7 @@
			$host = null;

			if (is_array($default_host)) {
			$post_host = get_input_value('_host', RCUBE_INPUT_POST);
			$post_host = rcube_ui::get_input_value('_host', rcube_ui::INPUT_POST);

			// direct match in default_host array
			if ($default_host[$post_host] \|\| in_array($post_host, array_values($default_host))) {
			@@ -1009,190 +609,33 @@
			}

			// try to select host by mail domain
			list($user, $domain) = explode('@', get_input_value('_user', RCUBE_INPUT_POST));
			list($user, $domain) = explode('@', rcube_ui::get_input_value('_user', rcube_ui::INPUT_POST));
			if (!empty($domain)) {
			foreach ($default_host as $storage_host => $mail_domains) {
			if (is_array($mail_domains) && in_array($domain, $mail_domains)) {
			if (is_array($mail_domains) && in_array_nocase($domain, $mail_domains)) {
			$host = $storage_host;
			break;
			}
			else if (stripos($storage_host, $domain) !== false \|\| stripos(strval($mail_domains), $domain) !== false) {
			$host = is_numeric($storage_host) ? $mail_domains : $storage_host;
			break;
			}
			}
			}

			// take the first entry if $host is still an array
			// take the first entry if $host is still not set
			if (empty($host)) {
			$host = array_shift($default_host);
			list($key, $val) = each($default_host);
			$host = is_numeric($key) ? $val : $key;
			}
			}
			else if (empty($default_host)) {
			$host = get_input_value('_host', RCUBE_INPUT_POST);
			$host = rcube_ui::get_input_value('_host', rcube_ui::INPUT_POST);
			}
			else
			$host = rcube_parse_host($default_host);
			$host = self::parse_host($default_host);

			return $host;
			}


			/**
			* Get localized text in the desired language
			*
			* @param mixed $attrib Named parameters array or label name
			* @param string $domain Label domain (plugin) name
			*
			* @return string Localized text
			*/
			public function gettext($attrib, $domain=null)
			{
			// load localization files if not done yet
			if (empty($this->texts))
			$this->load_language();

			// extract attributes
			if (is_string($attrib))
			$attrib = array('name' => $attrib);

			$name = $attrib['name'] ? $attrib['name'] : '';

			// attrib contain text values: use them from now
			if (($setval = $attrib[strtolower($_SESSION['language'])]) \|\| ($setval = $attrib['en_us']))
			$this->texts[$name] = $setval;

			// check for text with domain
			if ($domain && ($text = $this->texts[$domain.'.'.$name]))
			;
			// text does not exist
			else if (!($text = $this->texts[$name])) {
			return "[$name]";
			}

			// replace vars in text
			if (is_array($attrib['vars'])) {
			foreach ($attrib['vars'] as $var_key => $var_value)
			$text = str_replace($var_key[0]!='$' ? '$'.$var_key : $var_key, $var_value, $text);
			}

			// format output
			if (($attrib['uppercase'] && strtolower($attrib['uppercase']=='first')) \|\| $attrib['ucfirst'])
			return ucfirst($text);
			else if ($attrib['uppercase'])
			return mb_strtoupper($text);
			else if ($attrib['lowercase'])
			return mb_strtolower($text);

			return strtr($text, array('\n' => "\n"));
			}


			/**
			* Check if the given text label exists
			*
			* @param string $name Label name
			* @param string $domain Label domain (plugin) name or '*' for all domains
			* @param string $ref_domain Sets domain name if label is found
			*
			* @return boolean True if text exists (either in the current language or in en_US)
			*/
			public function text_exists($name, $domain = null, &$ref_domain = null)
			{
			// load localization files if not done yet
			if (empty($this->texts))
			$this->load_language();

			if (isset($this->texts[$name])) {
			$ref_domain = '';
			return true;
			}

			// any of loaded domains (plugins)
			if ($domain == '*') {
			foreach ($this->plugins->loaded_plugins() as $domain)
			if (isset($this->texts[$domain.'.'.$name])) {
			$ref_domain = $domain;
			return true;
			}
			}
			// specified domain
			else if ($domain) {
			$ref_domain = $domain;
			return isset($this->texts[$domain.'.'.$name]);
			}

			return false;
			}

			/**
			* Load a localization package
			*
			* @param string Language ID
			*/
			public function load_language($lang = null, $add = array())
			{
			$lang = $this->language_prop(($lang ? $lang : $_SESSION['language']));

			// load localized texts
			if (empty($this->texts) \|\| $lang != $_SESSION['language']) {
			$this->texts = array();

			// handle empty lines after closing PHP tag in localization files
			ob_start();

			// get english labels (these should be complete)
			@include(INSTALL_PATH . 'program/localization/en_US/labels.inc');
			@include(INSTALL_PATH . 'program/localization/en_US/messages.inc');

			if (is_array($labels))
			$this->texts = $labels;
			if (is_array($messages))
			$this->texts = array_merge($this->texts, $messages);

			// include user language files
			if ($lang != 'en' && is_dir(INSTALL_PATH . 'program/localization/' . $lang)) {
			include_once(INSTALL_PATH . 'program/localization/' . $lang . '/labels.inc');
			include_once(INSTALL_PATH . 'program/localization/' . $lang . '/messages.inc');

			if (is_array($labels))
			$this->texts = array_merge($this->texts, $labels);
			if (is_array($messages))
			$this->texts = array_merge($this->texts, $messages);
			}

			ob_end_clean();

			$_SESSION['language'] = $lang;
			}

			// append additional texts (from plugin)
			if (is_array($add) && !empty($add))
			$this->texts += $add;
			}


			/**
			* Read directory program/localization and return a list of available languages
			*
			* @return array List of available localizations
			*/
			public function list_languages()
			{
			static $sa_languages = array();

			if (!sizeof($sa_languages)) {
			@include(INSTALL_PATH . 'program/localization/index.inc');

			if ($dh = @opendir(INSTALL_PATH . 'program/localization')) {
			while (($name = readdir($dh)) !== false) {
			if ($name[0] == '.' \|\| !is_dir(INSTALL_PATH . 'program/localization/' . $name))
			continue;

			if ($label = $rcube_languages[$name])
			$sa_languages[$name] = $label;
			}
			closedir($dh);
			}
			}

			return $sa_languages;
			}


			@@ -1204,7 +647,7 @@
			$this->plugins->exec_hook('session_destroy');

			$this->session->kill();
			$_SESSION = array('language' => $this->user->language, 'temp' => true);
			$_SESSION = array('language' => $this->user->language, 'temp' => true, 'skin' => $this->config->get('skin'));
			$this->user->reset();
			}

			@@ -1240,61 +683,14 @@


			/**
			* Function to be executed in script shutdown
			* Registered with register_shutdown_function()
			* Garbage collector for cache entries.
			* Set flag to expunge caches on shutdown
			*/
			public function shutdown()
			function cache_gc()
			{
			foreach ($this->shutdown_functions as $function)
			call_user_func($function);

			if (is_object($this->smtp))
			$this->smtp->disconnect();

			foreach ($this->address_books as $book) {
			if (is_object($book) && is_a($book, 'rcube_addressbook'))
			$book->close();
			}

			foreach ($this->caches as $cache) {
			if (is_object($cache))
			$cache->close();
			}

			if (is_object($this->storage))
			$this->storage->close();

			// before closing the database connection, write session data
			if ($_SERVER['REMOTE_ADDR'] && is_object($this->session)) {
			session_write_close();
			}

			// write performance stats to logs/console
			if ($this->config->get('devel_mode')) {
			if (function_exists('memory_get_usage'))
			$mem = show_bytes(memory_get_usage());
			if (function_exists('memory_get_peak_usage'))
			$mem .= '/'.show_bytes(memory_get_peak_usage());

			$log = $this->task . ($this->action ? '/'.$this->action : '') . ($mem ? " [$mem]" : '');
			if (defined('RCMAIL_START'))
			rcube_print_time(RCMAIL_START, $log);
			else
			console($log);
			}
			}


			/**
			* Registers shutdown function to be executed on shutdown.
			* The functions will be executed before destroying any
			* objects like smtp, imap, session, etc.
			*
			* @param callback Function callback
			*/
			public function add_shutdown_function($function)
			{
			$this->shutdown_functions[] = $function;
			// because this gc function is called before storage is initialized,
			// we just set a flag to expunge storage cache on shutdown.
			$this->expunge_cache = true;
			}


			@@ -1307,7 +703,7 @@
			{
			$sess_id = $_COOKIE[ini_get('session.name')];
			if (!$sess_id) $sess_id = session_id();
			$plugin = $this->plugins->exec_hook('request_token', array('value' => md5('RT' . $this->user->ID . $this->config->get('des_key') . $sess_id)));
			$plugin = $this->plugins->exec_hook('request_token', array('value' => md5('RT' . $this->get_user_id() . $this->config->get('des_key') . $sess_id)));
			return $plugin['value'];
			}

			@@ -1318,9 +714,9 @@
			* @param int Request method
			* @return boolean True if request token is valid false if not
			*/
			public function check_request($mode = RCUBE_INPUT_POST)
			public function check_request($mode = rcube_ui::INPUT_POST)
			{
			$token = get_input_value('_token', $mode);
			$token = rcube_ui::get_input_value('_token', $mode);
			$sess_id = $_COOKIE[ini_get('session.name')];
			return !empty($sess_id) && $token == $this->get_request_token();
			}
			@@ -1349,130 +745,6 @@


			/**
			* Encrypt using 3DES
			*
			* @param string $clear clear text input
			* @param string $key encryption key to retrieve from the configuration, defaults to 'des_key'
			* @param boolean $base64 whether or not to base64_encode() the result before returning
			*
			* @return string encrypted text
			*/
			public function encrypt($clear, $key = 'des_key', $base64 = true)
			{
			if (!$clear)
			return '';
			/*-
			* Add a single canary byte to the end of the clear text, which
			* will help find out how much of padding will need to be removed
			* upon decryption; see http://php.net/mcrypt_generic#68082
			*/
			$clear = pack("a*H2", $clear, "80");

			if (function_exists('mcrypt_module_open') &&
			($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, "")))
			{
			$iv = $this->create_iv(mcrypt_enc_get_iv_size($td));
			mcrypt_generic_init($td, $this->config->get_crypto_key($key), $iv);
			$cipher = $iv . mcrypt_generic($td, $clear);
			mcrypt_generic_deinit($td);
			mcrypt_module_close($td);
			}
			else {
			@include_once 'des.inc';

			if (function_exists('des')) {
			$des_iv_size = 8;
			$iv = $this->create_iv($des_iv_size);
			$cipher = $iv . des($this->config->get_crypto_key($key), $clear, 1, 1, $iv);
			}
			else {
			raise_error(array(
			'code' => 500, 'type' => 'php',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "Could not perform encryption; make sure Mcrypt is installed or lib/des.inc is available"
			), true, true);
			}
			}

			return $base64 ? base64_encode($cipher) : $cipher;
			}

			/**
			* Decrypt 3DES-encrypted string
			*
			* @param string $cipher encrypted text
			* @param string $key encryption key to retrieve from the configuration, defaults to 'des_key'
			* @param boolean $base64 whether or not input is base64-encoded
			*
			* @return string decrypted text
			*/
			public function decrypt($cipher, $key = 'des_key', $base64 = true)
			{
			if (!$cipher)
			return '';

			$cipher = $base64 ? base64_decode($cipher) : $cipher;

			if (function_exists('mcrypt_module_open') &&
			($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, "")))
			{
			$iv_size = mcrypt_enc_get_iv_size($td);
			$iv = substr($cipher, 0, $iv_size);

			// session corruption? (#1485970)
			if (strlen($iv) < $iv_size)
			return '';

			$cipher = substr($cipher, $iv_size);
			mcrypt_generic_init($td, $this->config->get_crypto_key($key), $iv);
			$clear = mdecrypt_generic($td, $cipher);
			mcrypt_generic_deinit($td);
			mcrypt_module_close($td);
			}
			else {
			@include_once 'des.inc';

			if (function_exists('des')) {
			$des_iv_size = 8;
			$iv = substr($cipher, 0, $des_iv_size);
			$cipher = substr($cipher, $des_iv_size);
			$clear = des($this->config->get_crypto_key($key), $cipher, 0, 1, $iv);
			}
			else {
			raise_error(array(
			'code' => 500, 'type' => 'php',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "Could not perform decryption; make sure Mcrypt is installed or lib/des.inc is available"
			), true, true);
			}
			}

			/*-
			* Trim PHP's padding and the canary byte; see note in
			* rcmail::encrypt() and http://php.net/mcrypt_generic#68082
			*/
			$clear = substr(rtrim($clear, "\0"), 0, -1);

			return $clear;
			}

			/**
			* Generates encryption initialization vector (IV)
			*
			* @param int Vector size
			* @return string Vector string
			*/
			private function create_iv($size)
			{
			// mcrypt_create_iv() can be slow when system lacks entrophy
			// we'll generate IV vector manually
			$iv = '';
			for ($i = 0; $i < $size; $i++)
			$iv .= chr(mt_rand(0, 255));
			return $iv;
			}

			/**
			* Build a valid URL to this instance of Roundcube
			*
			* @param mixed Either a string with the action or url parameters as key-value pairs
			@@ -1490,7 +762,7 @@
			$url = './';
			$delm = '?';
			foreach (array_reverse($p) as $key => $val) {
			if ($val !== '') {
			if ($val !== '' && $val !== null) {
			$par = $key[0] == '_' ? $key : '_'.$key;
			$url .= $delm.urlencode($par).'='.urlencode($val);
			$delm = '&';
			@@ -1501,110 +773,36 @@


			/**
			* Use imagemagick or GD lib to read image properties
			*
			* @param string Absolute file path
			* @return mixed Hash array with image props like type, width, height or False on error
			* Function to be executed in script shutdown
			*/
			public static function imageprops($filepath)
			public function shutdown()
			{
			$rcmail = rcmail::get_instance();
			if ($cmd = $rcmail->config->get('im_identify_path', false)) {
			list(, $type, $size) = explode(' ', strtolower(rcmail::exec($cmd. ' 2>/dev/null {in}', array('in' => $filepath))));
			if ($size)
			list($width, $height) = explode('x', $size);
			}
			else if (function_exists('getimagesize')) {
			$imsize = @getimagesize($filepath);
			$width = $imsize[0];
			$height = $imsize[1];
			$type = preg_replace('!image/!', '', $imsize['mime']);
			parent::shutdown();

			foreach ($this->address_books as $book) {
			if (is_object($book) && is_a($book, 'rcube_addressbook'))
			$book->close();
			}

			return $type ? array('type' => $type, 'width' => $width, 'height' => $height) : false;
			}


			/**
			* Convert an image to a given size and type using imagemagick (ensures input is an image)
			*
			* @param $p['in'] Input filename (mandatory)
			* @param $p['out'] Output filename (mandatory)
			* @param $p['size'] Width x height of resulting image, e.g. "160x60"
			* @param $p['type'] Output file type, e.g. "jpg"
			* @param $p['-opts'] Custom command line options to ImageMagick convert
			* @return Success of convert as true/false
			*/
			public static function imageconvert($p)
			{
			$result = false;
			$rcmail = rcmail::get_instance();
			$convert = $rcmail->config->get('im_convert_path', false);
			$identify = $rcmail->config->get('im_identify_path', false);

			// imagemagick is required for this
			if (!$convert)
			return false;

			if (!(($imagetype = @exif_imagetype($p['in'])) && ($type = image_type_to_extension($imagetype, false))))
			list(, $type) = explode(' ', strtolower(rcmail::exec($identify . ' 2>/dev/null {in}', $p))); # for things like eps

			$type = strtr($type, array("jpeg" => "jpg", "tiff" => "tif", "ps" => "eps", "ept" => "eps"));
			$p += array('type' => $type, 'types' => "bmp,eps,gif,jp2,jpg,png,svg,tif", 'quality' => 75);
			$p['-opts'] = array('-resize' => $p['size'].'>') + (array)$p['-opts'];

			if (in_array($type, explode(',', $p['types']))) # Valid type?
			$result = rcmail::exec($convert . ' 2>&1 -flatten -auto-orient -colorspace RGB -quality {quality} {-opts} {in} {type}:{out}', $p) === "";

			return $result;
			}


			/**
			* Construct shell command, execute it and return output as string.
			* Keywords {keyword} are replaced with arguments
			*
			* @param $cmd Format string with {keywords} to be replaced
			* @param $values (zero, one or more arrays can be passed)
			* @return output of command. shell errors not detectable
			*/
			public static function exec(/* $cmd, $values1 = array(), ... */)
			{
			$args = func_get_args();
			$cmd = array_shift($args);
			$values = $replacements = array();

			// merge values into one array
			foreach ($args as $arg)
			$values += (array)$arg;

			preg_match_all('/({(-?)([a-z]\w*)})/', $cmd, $matches, PREG_SET_ORDER);
			foreach ($matches as $tags) {
			list(, $tag, $option, $key) = $tags;
			$parts = array();

			if ($option) {
			foreach ((array)$values["-$key"] as $key => $value) {
			if ($value === true \|\| $value === false \|\| $value === null)
			$parts[] = $value ? $key : "";
			else foreach ((array)$value as $val)
			$parts[] = "$key " . escapeshellarg($val);
			}
			}
			else {
			foreach ((array)$values[$key] as $value)
			$parts[] = escapeshellarg($value);
			}

			$replacements[$tag] = join(" ", $parts);
			// before closing the database connection, write session data
			if ($_SERVER['REMOTE_ADDR'] && is_object($this->session)) {
			session_write_close();
			}

			// use strtr behaviour of going through source string once
			$cmd = strtr($cmd, $replacements);
			// write performance stats to logs/console
			if ($this->config->get('devel_mode')) {
			if (function_exists('memory_get_usage'))
			$mem = rcube_ui::show_bytes(memory_get_usage());
			if (function_exists('memory_get_peak_usage'))
			$mem .= '/'.rcube_ui::show_bytes(memory_get_peak_usage());

			return (string)shell_exec($cmd);
			$log = $this->task . ($this->action ? '/'.$this->action : '') . ($mem ? " [$mem]" : '');
			if (defined('RCMAIL_START'))
			self::print_timer(RCMAIL_START, $log);
			else
			self::console($log);
			}
			}


			/**
			* Helper method to set a cookie with the current path and host settings
			@@ -1621,7 +819,7 @@
			$cookie = session_get_cookie_params();

			setcookie($name, $value, $exp, $cookie['path'], $cookie['domain'],
			rcube_https_check(), true);
			rcube_ui::https_check(), true);
			}

			/**
			@@ -1752,4 +950,356 @@
			$this->set_storage_prop();
			}


			/**
			* Overwrite action variable
			*
			* @param string New action value
			*/
			public function overwrite_action($action)
			{
			$this->action = $action;
			$this->output->set_env('action', $action);
			}


			/**
			* Send the given message using the configured method.
			*
			* @param object $message Reference to Mail_MIME object
			* @param string $from Sender address string
			* @param array $mailto Array of recipient address strings
			* @param array $smtp_error SMTP error array (reference)
			* @param string $body_file Location of file with saved message body (reference),
			* used when delay_file_io is enabled
			* @param array $smtp_opts SMTP options (e.g. DSN request)
			*
			* @return boolean Send status.
			*/
			public function deliver_message(&$message, $from, $mailto, &$smtp_error, &$body_file = null, $smtp_opts = null)
			{
			$headers = $message->headers();

			// send thru SMTP server using custom SMTP library
			if ($this->config->get('smtp_server')) {
			// generate list of recipients
			$a_recipients = array($mailto);

			if (strlen($headers['Cc']))
			$a_recipients[] = $headers['Cc'];
			if (strlen($headers['Bcc']))
			$a_recipients[] = $headers['Bcc'];

			// clean Bcc from header for recipients
			$send_headers = $headers;
			unset($send_headers['Bcc']);
			// here too, it because txtHeaders() below use $message->_headers not only $send_headers
			unset($message->_headers['Bcc']);

			$smtp_headers = $message->txtHeaders($send_headers, true);

			if ($message->getParam('delay_file_io')) {
			// use common temp dir
			$temp_dir = $this->config->get('temp_dir');
			$body_file = tempnam($temp_dir, 'rcmMsg');
			if (PEAR::isError($mime_result = $message->saveMessageBody($body_file))) {
			self::raise_error(array('code' => 650, 'type' => 'php',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "Could not create message: ".$mime_result->getMessage()),
			TRUE, FALSE);
			return false;
			}
			$msg_body = fopen($body_file, 'r');
			}
			else {
			$msg_body = $message->get();
			}

			// send message
			if (!is_object($this->smtp)) {
			$this->smtp_init(true);
			}

			$sent = $this->smtp->send_mail($from, $a_recipients, $smtp_headers, $msg_body, $smtp_opts);
			$smtp_response = $this->smtp->get_response();
			$smtp_error = $this->smtp->get_error();

			// log error
			if (!$sent) {
			self::raise_error(array('code' => 800, 'type' => 'smtp',
			'line' => __LINE__, 'file' => __FILE__,
			'message' => "SMTP error: ".join("\n", $smtp_response)), TRUE, FALSE);
			}
			}
			// send mail using PHP's mail() function
			else {
			// unset some headers because they will be added by the mail() function
			$headers_enc = $message->headers($headers);
			$headers_php = $message->_headers;
			unset($headers_php['To'], $headers_php['Subject']);

			// reset stored headers and overwrite
			$message->_headers = array();
			$header_str = $message->txtHeaders($headers_php);

			// #1485779
			if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
			if (preg_match_all('/<([^@]+@[^>]+)>/', $headers_enc['To'], $m)) {
			$headers_enc['To'] = implode(', ', $m[1]);
			}
			}

			$msg_body = $message->get();

			if (PEAR::isError($msg_body)) {
			self::raise_error(array('code' => 650, 'type' => 'php',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "Could not create message: ".$msg_body->getMessage()),
			TRUE, FALSE);
			}
			else {
			$delim = $this->config->header_delimiter();
			$to = $headers_enc['To'];
			$subject = $headers_enc['Subject'];
			$header_str = rtrim($header_str);

			if ($delim != "\r\n") {
			$header_str = str_replace("\r\n", $delim, $header_str);
			$msg_body = str_replace("\r\n", $delim, $msg_body);
			$to = str_replace("\r\n", $delim, $to);
			$subject = str_replace("\r\n", $delim, $subject);
			}

			if (ini_get('safe_mode'))
			$sent = mail($to, $subject, $msg_body, $header_str);
			else
			$sent = mail($to, $subject, $msg_body, $header_str, "-f$from");
			}
			}

			if ($sent) {
			$this->plugins->exec_hook('message_sent', array('headers' => $headers, 'body' => $msg_body));

			// remove MDN headers after sending
			unset($headers['Return-Receipt-To'], $headers['Disposition-Notification-To']);

			// get all recipients
			if ($headers['Cc'])
			$mailto .= $headers['Cc'];
			if ($headers['Bcc'])
			$mailto .= $headers['Bcc'];
			if (preg_match_all('/<([^@]+@[^>]+)>/', $mailto, $m))
			$mailto = implode(', ', array_unique($m[1]));

			if ($this->config->get('smtp_log')) {
			self::write_log('sendmail', sprintf("User %s [%s]; Message for %s; %s",
			$this->user->get_username(),
			$_SERVER['REMOTE_ADDR'],
			$mailto,
			!empty($smtp_response) ? join('; ', $smtp_response) : ''));
			}
			}

			if (is_resource($msg_body)) {
			fclose($msg_body);
			}

			$message->_headers = array();
			$message->headers($headers);

			return $sent;
			}


			/**
			* Unique Message-ID generator.
			*
			* @return string Message-ID
			*/
			public function gen_message_id()
			{
			$local_part = md5(uniqid('rcmail'.mt_rand(),true));
			$domain_part = $this->user->get_username('domain');

			// Try to find FQDN, some spamfilters doesn't like 'localhost' (#1486924)
			if (!preg_match('/\.[a-z]+$/i', $domain_part)) {
			foreach (array($_SERVER['HTTP_HOST'], $_SERVER['SERVER_NAME']) as $host) {
			$host = preg_replace('/:[0-9]+$/', '', $host);
			if ($host && preg_match('/\.[a-z]+$/i', $host)) {
			$domain_part = $host;
			}
			}
			}

			return sprintf('<%s@%s>', $local_part, $domain_part);
			}


			/**
			* Returns RFC2822 formatted current date in user's timezone
			*
			* @return string Date
			*/
			public function user_date()
			{
			// get user's timezone
			try {
			$tz = new DateTimeZone($this->config->get('timezone'));
			$date = new DateTime('now', $tz);
			}
			catch (Exception $e) {
			$date = new DateTime();
			}

			return $date->format('r');
			}


			/**
			* E-mail address validation.
			*
			* @param string $email Email address
			* @param boolean $dns_check True to check dns
			*
			* @return boolean True on success, False if address is invalid
			*/
			public function check_email($email, $dns_check=true)
			{
			// Check for invalid characters
			if (preg_match('/[\x00-\x1F\x7F-\xFF]/', $email)) {
			return false;
			}

			// Check for length limit specified by RFC 5321 (#1486453)
			if (strlen($email) > 254) {
			return false;
			}

			$email_array = explode('@', $email);

			// Check that there's one @ symbol
			if (count($email_array) < 2) {
			return false;
			}

			$domain_part = array_pop($email_array);
			$local_part = implode('@', $email_array);

			// from PEAR::Validate
			$regexp = '&^(?:
			("\s(?:[^"\f\n\r\t\v\b\s]+\s)+")\| #1 quoted name
			([-\w!\#\$%\&\'+~/^`\|{}=]+(?:\.[-\w!\#\$%\&\'+~/^`\|{}=]+)*)) #2 OR dot-atom (RFC5322)
			$&xi';

			if (!preg_match($regexp, $local_part)) {
			return false;
			}

			// Check domain part
			if (preg_match('/^\[(25[0-5]\|2[0-4][0-9]\|1[0-9][0-9]\|[1-9]?[0-9])(\.(25[0-5]\|2[0-4][0-9]\|1[0-9][0-9]\|[1-9]?[0-9])){3}\]$/', $domain_part)) {
			return true; // IP address
			}
			else {
			// If not an IP address
			$domain_array = explode('.', $domain_part);
			// Not enough parts to be a valid domain
			if (sizeof($domain_array) < 2) {
			return false;
			}

			foreach ($domain_array as $part) {
			if (!preg_match('/^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])\|([A-Za-z0-9]))$/', $part)) {
			return false;
			}
			}

			if (!$dns_check \|\| !$this->config->get('email_dns_check')) {
			return true;
			}

			if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN' && version_compare(PHP_VERSION, '5.3.0', '<')) {
			$lookup = array();
			@exec("nslookup -type=MX " . escapeshellarg($domain_part) . " 2>&1", $lookup);
			foreach ($lookup as $line) {
			if (strpos($line, 'MX preference')) {
			return true;
			}
			}
			return false;
			}

			// find MX record(s)
			if (getmxrr($domain_part, $mx_records)) {
			return true;
			}

			// find any DNS record
			if (checkdnsrr($domain_part, 'ANY')) {
			return true;
			}
			}

			return false;
			}


			/**
			* Write login data (name, ID, IP address) to the 'userlogins' log file.
			*/
			public function log_login()
			{
			if (!$this->config->get('log_logins')) {
			return;
			}

			$user_name = $this->get_user_name();
			$user_id = $this->get_user_id();

			if (!$user_id) {
			return;
			}

			self::write_log('userlogins',
			sprintf('Successful login for %s (ID: %d) from %s in session %s',
			$user_name, $user_id, self::remote_ip(), session_id()));
			}


			/**
			* Check whether the HTTP referer matches the current request
			*
			* @return boolean True if referer is the same host+path, false if not
			*/
			public static function check_referer()
			{
			$uri = parse_url($_SERVER['REQUEST_URI']);
			$referer = parse_url(rcube_request_header('Referer'));
			return $referer['host'] == rcube_request_header('Host') && $referer['path'] == $uri['path'];
			}


			/**
			* Garbage collector function for temp files.
			* Remove temp files older than two days
			*/
			public function temp_gc()
			{
			$tmp = unslashify($this->config->get('temp_dir'));
			$expire = mktime() - 172800; // expire in 48 hours

			if ($dir = opendir($tmp)) {
			while (($fname = readdir($dir)) !== false) {
			if ($fname{0} == '.') {
			continue;
			}

			if (filemtime($tmp.'/'.$fname) < $expire) {
			@unlink($tmp.'/'.$fname);
			}
			}

			closedir($dir);
			}
			}

			}