githubFork/roundcubemail.git

			@@ -5,19 +5,20 @@
			\| 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 \|
			\| instances of all 'global' objects like db- and imap-connections \|
			+-----------------------------------------------------------------------+
			\| Author: Thomas Bruederli <roundcube@gmail.com> \|
			\| Author: Aleksander Machniak <alec@alec.pl> \|
			+-----------------------------------------------------------------------+

			$Id$

			*/


			@@ -27,7 +28,7 @@
			*
			* @package Core
			*/
			class rcmail
			class rcmail extends rcube
			{
			/**
			* Main tasks.
			@@ -35,76 +36,6 @@
			* @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_imap class.
			*
			* @var rcube_imap
			*/
			public $imap;

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

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

			/**
			* Current task.
			@@ -121,12 +52,11 @@
			public $action = '';
			public $comm_path = './';

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


			const JS_OBJECT_NAME = 'rcmail';

			/**
			* This implements the 'singleton' design pattern
			@@ -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
			}
			@@ -145,34 +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
			*
			* @todo Remove global vars $DB, $USER
			*/
			private function startup()
			protected function startup()
			{
			// initialize syslog
			if ($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
			$GLOBALS['DB'] = $this->get_dbh();
			$this->init(self::INIT_WITH_DB \| self::INIT_WITH_PLUGINS);

			// start session
			$this->session_init();
			@@ -184,8 +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_utils::get_input_value('_task', rcube_utils::INPUT_GPC));
			$this->action = asciiwords(rcube_utils::get_input_value('_action', rcube_utils::INPUT_GPC));

			// reset some session parameters when changing task
			if ($this->task != 'utils') {
			@@ -201,11 +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'));
			}


			@@ -240,7 +146,6 @@
			{
			if (is_object($user)) {
			$this->user = $user;
			$GLOBALS['USER'] = $this->user;

			// overwrite config with user preferences
			$this->config->set_user_prefs((array)$this->user->get_prefs());
			@@ -254,144 +159,6 @@
			// workaround for http://bugs.php.net/bug.php?id=18556
			if (in_array($_SESSION['language'], array('tr_TR', 'ku', 'az_AZ')))
			setlocale(LC_CTYPE, 'en_US' . '.utf8');
			}


			/**
			* 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];
			}


			@@ -421,10 +188,10 @@
			$contacts = $this->address_books[$id];
			}
			else if ($id && $ldap_config[$id]) {
			$contacts = new rcube_ldap($ldap_config[$id], $this->config->get('ldap_debug'), $this->config->mail_domain($_SESSION['imap_host']));
			$contacts = new rcube_ldap($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));
			@@ -445,16 +212,19 @@
			}

			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
			if (!isset($this->address_books[$id]))
			$this->address_books[$id] = $contacts;
			$this->address_books[$id] = $contacts;

			return $contacts;
			}
			@@ -477,10 +247,10 @@
			// We are using the DB address book
			if ($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),
			@@ -490,7 +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'],
			@@ -499,6 +273,7 @@
			'hidden' => $prop['hidden'],
			'autocomplete' => in_array($id, $autocomplete)
			);
			}
			}

			$plugin = $this->plugins->exec_hook('addressbooks_list', array('sources' => $list));
			@@ -523,13 +298,13 @@
			* environment vars according to the current session and configuration
			*
			* @param boolean True if this request is loaded in a (i)frame
			* @return rcube_template Reference to HTML output object
			* @return rcube_output_html Reference to HTML output object
			*/
			public function load_gui($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())) {
			@@ -547,7 +322,7 @@
			$this->output->set_charset(RCMAIL_CHARSET);

			// add some basic labels to client
			$this->output->add_label('loading', 'servererror');
			$this->output->add_label('loading', 'servererror', 'requesttimedout');

			return $this->output;
			}
			@@ -556,117 +331,14 @@
			/**
			* Create an output object for JSON responses
			*
			* @return rcube_json_output Reference to JSON output object
			* @return rcube_output_json Reference to JSON output object
			*/
			public function json_init()
			{
			if (!($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();
			}


			/**
			* Create global IMAP object and connect to server
			*
			* @param boolean True if connection should be established
			* @todo Remove global $IMAP
			*/
			public function imap_init($connect = false)
			{
			// already initialized
			if (is_object($this->imap))
			return;

			$this->imap = new rcube_imap();
			$this->imap->debug_level = $this->config->get('debug_level');
			$this->imap->skip_deleted = $this->config->get('skip_deleted');

			// enable caching of imap data
			$imap_cache = $this->config->get('imap_cache');
			$messages_cache = $this->config->get('messages_cache');
			// for backward compatybility
			if ($imap_cache === null && $messages_cache === null && $this->config->get('enable_caching')) {
			$imap_cache = 'db';
			$messages_cache = true;
			}
			if ($imap_cache)
			$this->imap->set_caching($imap_cache);
			if ($messages_cache)
			$this->imap->set_messages_caching(true);

			// set pagesize from config
			$this->imap->set_pagesize($this->config->get('pagesize', 50));

			// Setting root and delimiter before establishing the connection
			// can save time detecting them using NAMESPACE and LIST
			$options = array(
			'auth_type' => $this->config->get('imap_auth_type', 'check'),
			'auth_cid' => $this->config->get('imap_auth_cid'),
			'auth_pw' => $this->config->get('imap_auth_pw'),
			'debug' => (bool) $this->config->get('imap_debug', 0),
			'force_caps' => (bool) $this->config->get('imap_force_caps'),
			'timeout' => (int) $this->config->get('imap_timeout', 0),
			);

			$this->imap->set_options($options);

			// set global object for backward compatibility
			$GLOBALS['IMAP'] = $this->imap;

			$hook = $this->plugins->exec_hook('imap_init', array('fetch_headers' => $this->imap->fetch_add_headers));
			if ($hook['fetch_headers'])
			$this->imap->fetch_add_headers = $hook['fetch_headers'];

			// support this parameter for backward compatibility but log warning
			if ($connect) {
			$this->imap_connect();
			raise_error(array(
			'code' => 800, 'type' => 'imap',
			'file' => __FILE__, 'line' => __LINE__,
			'message' => "rcube::imap_init(true) is deprecated, use rcube::imap_connect() instead"),
			true, false);
			}
			}


			/**
			* Connect to IMAP server with stored session data
			*
			* @return bool True on success, false on error
			*/
			public function imap_connect()
			{
			if (!$this->imap)
			$this->imap_init();

			if ($_SESSION['imap_host'] && !$this->imap->conn->connected()) {
			if (!$this->imap->connect($_SESSION['imap_host'], $_SESSION['username'], $this->decrypt($_SESSION['password']), $_SESSION['imap_port'], $_SESSION['imap_ssl'])) {
			if ($this->output)
			$this->output->show_message($this->imap->get_error_code() == -1 ? 'imaperror' : 'sessionerror', 'error');
			}
			else {
			$this->set_imap_prop();
			return $this->imap->conn;
			}
			}

			return false;
			}


			@@ -675,79 +347,34 @@
			*/
			public function session_init()
			{
			// session started (Installer?)
			if (session_id())
			return;

			// set session domain
			if ($domain = $this->config->get('session_domain')) {
			ini_set('session.cookie_domain', $domain);
			}
			// set session garbage collecting time according to session_lifetime
			$lifetime = $this->config->get('session_lifetime', 0) * 60;
			if ($lifetime) {
			ini_set('session.gc_maxlifetime', $lifetime * 2);
			}

			ini_set('session.cookie_secure', rcube_https_check());
			ini_set('session.name', 'roundcube_sessid');
			ini_set('session.use_cookies', 1);
			ini_set('session.use_only_cookies', 1);
			ini_set('session.serialize_handler', 'php');

			// 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');

			// start PHP session (if not in CLI mode)
			if ($_SERVER['REMOTE_ADDR'])
			session_start();
			parent::session_init();

			// 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']);
			}


			/**
			* Configure session object internals
			*/
			public function session_configure()
			{
			if (!$this->session)
			return;

			$lifetime = $this->config->get('session_lifetime', 0) * 60;

			// set keep-alive/check-recent interval
			if ($keep_alive = $this->config->get('keep_alive')) {
			// be sure that it's less than session lifetime
			if ($lifetime)
			$keep_alive = min($keep_alive, $lifetime - 30);
			$keep_alive = max(60, $keep_alive);
			$this->session->set_keep_alive($keep_alive);
			}

			$this->session->set_secret($this->config->get('des_key') . $_SERVER['HTTP_USER_AGENT']);
			$this->session->set_ip_check($this->config->get('ip_check'));
			}


			/**
			* Perfom login to the IMAP server and to the webmail service.
			* Perfom login to the mail server and to the webmail service.
			* This will also create a new user entry if auto_create_user is configured.
			*
			* @param string IMAP user name
			* @param string IMAP password
			* @param string IMAP host
			* @param string Mail storage (IMAP) user name
			* @param string Mail storage (IMAP) password
			* @param string Mail storage (IMAP) host
			*
			* @return boolean True on success, False on failure
			*/
			function login($username, $pass, $host=NULL)
			{
			$user = NULL;
			if (empty($username)) {
			return false;
			}

			$config = $this->config->all();

			if (!$host)
			@@ -767,21 +394,23 @@
			if (!$allowed)
			return false;
			}
			else if (!empty($config['default_host']) && $host != rcube_parse_host($config['default_host']))
			else if (!empty($config['default_host']) && $host != rcube_utils::parse_host($config['default_host']))
			return false;

			// parse $host URL
			$a_host = parse_url($host);
			if ($a_host['host']) {
			$host = $a_host['host'];
			$imap_ssl = (isset($a_host['scheme']) && in_array($a_host['scheme'], array('ssl','imaps','tls'))) ? $a_host['scheme'] : null;
			$ssl = (isset($a_host['scheme']) && in_array($a_host['scheme'], array('ssl','imaps','tls'))) ? $a_host['scheme'] : null;
			if (!empty($a_host['port']))
			$imap_port = $a_host['port'];
			else if ($imap_ssl && $imap_ssl != 'tls' && (!$config['default_port'] \|\| $config['default_port'] == 143))
			$imap_port = 993;
			$port = $a_host['port'];
			else if ($ssl && $ssl != 'tls' && (!$config['default_port'] \|\| $config['default_port'] == 143))
			$port = 993;
			}

			$imap_port = $imap_port ? $imap_port : $config['default_port'];
			if (!$port) {
			$port = $config['default_port'];
			}

			/* Modify username with domain if required
			Inspired by Marco <P0L0_notspam_binware.org>
			@@ -789,12 +418,12 @@
			// 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);
			$username .= '@'.rcube_utils::parse_host($config['username_domain'][$host], $host);
			else if (is_string($config['username_domain']))
			$username .= '@'.rcube_parse_host($config['username_domain'], $host);
			$username .= '@'.rcube_utils::parse_host($config['username_domain'], $host);
			}

			// Convert username to lowercase. If IMAP backend
			// Convert username to lowercase. If storage backend
			// is case-insensitive we need to store always the same username (#1487113)
			if ($config['login_lc']) {
			$username = mb_strtolower($username);
			@@ -807,23 +436,22 @@

			// Here we need IDNA ASCII
			// Only rcube_contacts class is using domain names in Unicode
			$host = rcube_idn_to_ascii($host);
			$host = rcube_utils::idn_to_ascii($host);
			if (strpos($username, '@')) {
			// lowercase domain name
			list($local, $domain) = explode('@', $username);
			$username = $local . '@' . mb_strtolower($domain);
			$username = rcube_idn_to_ascii($username);
			$username = rcube_utils::idn_to_ascii($username);
			}

			// user already registered -> overwrite username
			if ($user = rcube_user::query($username, $host))
			$username = $user->data['username'];

			if (!$this->imap)
			$this->imap_init();
			$storage = $this->get_storage();

			// try IMAP login
			if (!($imap_login = $this->imap->connect($host, $username, $pass, $imap_port, $imap_ssl))) {
			// try to log in
			if (!($login = $storage->connect($host, $username, $pass, $port, $ssl))) {
			// try with lowercase
			$username_lc = mb_strtolower($username);
			if ($username_lc != $username) {
			@@ -831,25 +459,18 @@
			if (!$user && ($user = rcube_user::query($username_lc, $host)))
			$username_lc = $user->data['username'];

			if ($imap_login = $this->imap->connect($host, $username_lc, $pass, $imap_port, $imap_ssl))
			if ($login = $storage->connect($host, $username_lc, $pass, $port, $ssl))
			$username = $username_lc;
			}
			}

			// exit if IMAP login failed
			if (!$imap_login)
			// exit if login failed
			if (!$login) {
			return false;

			$this->set_imap_prop();
			}

			// user already registered -> update user's record
			if (is_object($user)) {
			// fix some old settings according to namespace prefix
			$this->fix_namespace_settings($user);

			// create default folders on first login
			if (!$user->data['last_login'] && $config['create_default_folders'])
			$this->imap->create_default_folders();
			// update last login timestamp
			$user->touch();
			}
			@@ -857,16 +478,9 @@
			else if ($config['auto_create_user']) {
			if ($created = rcube_user::create($username, $host)) {
			$user = $created;

			// fix default settings according to namespace prefix
			$this->fix_namespace_settings($user);

			// create default folders on first login
			if ($config['create_default_folders'])
			$this->imap->create_default_folders();
			}
			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?"
			@@ -874,7 +488,7 @@
			}
			}
			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"
			@@ -883,48 +497,40 @@

			// login succeeded
			if (is_object($user) && $user->ID) {
			// Configure environment
			$this->set_user($user);
			$this->set_storage_prop();
			$this->session_configure();

			// fix some old settings according to namespace prefix
			$this->fix_namespace_settings($user);

			// create default folders on first login
			if ($config['create_default_folders'] && (!empty($created) \|\| empty($user->data['last_login']))) {
			$storage->create_default_folders();
			}

			// set session vars
			$_SESSION['user_id'] = $user->ID;
			$_SESSION['username'] = $user->data['username'];
			$_SESSION['imap_host'] = $host;
			$_SESSION['imap_port'] = $imap_port;
			$_SESSION['imap_ssl'] = $imap_ssl;
			$_SESSION['password'] = $this->encrypt($pass);
			$_SESSION['login_time'] = mktime();

			$_SESSION['user_id'] = $user->ID;
			$_SESSION['username'] = $user->data['username'];
			$_SESSION['storage_host'] = $host;
			$_SESSION['storage_port'] = $port;
			$_SESSION['storage_ssl'] = $ssl;
			$_SESSION['password'] = $this->encrypt($pass);
			$_SESSION['login_time'] = time();

			if (isset($_REQUEST['_timezone']) && $_REQUEST['_timezone'] != '_default_')
			$_SESSION['timezone'] = floatval($_REQUEST['_timezone']);
			if (isset($_REQUEST['_dstactive']) && $_REQUEST['_dstactive'] != '_default_')
			$_SESSION['dst_active'] = intval($_REQUEST['_dstactive']);

			// force reloading complete list of subscribed mailboxes
			$this->imap->clear_cache('mailboxes', true);
			$storage->clear_cache('mailboxes', true);

			return true;
			}

			return false;
			}


			/**
			* Set root dir and last stored mailbox
			* This must be done AFTER connecting to the server!
			*/
			public function set_imap_prop()
			{
			$this->imap->set_charset($this->config->get('default_charset', RCMAIL_CHARSET));

			if ($default_folders = $this->config->get('default_imap_folders')) {
			$this->imap->set_default_mailboxes($default_folders);
			}
			if (isset($_SESSION['mbox'])) {
			$this->imap->set_mailbox($_SESSION['mbox']);
			}
			if (isset($_SESSION['page'])) {
			$this->imap->set_page($_SESSION['page']);
			}
			}


			@@ -939,223 +545,42 @@
			$host = null;

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

			list($user, $domain) = explode('@', $post_user);

			// direct match in default_host array
			if ($default_host[$post_host] \|\| in_array($post_host, array_values($default_host))) {
			$host = $post_host;
			}

			// try to select host by mail domain
			list($user, $domain) = explode('@', get_input_value('_user', RCUBE_INPUT_POST));
			if (!empty($domain)) {
			foreach ($default_host as $imap_host => $mail_domains) {
			if (is_array($mail_domains) && in_array($domain, $mail_domains)) {
			$host = $imap_host;
			else if (!empty($domain)) {
			foreach ($default_host as $storage_host => $mail_domains) {
			if (is_array($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_utils::get_input_value('_host', rcube_utils::INPUT_POST);
			}
			else
			$host = rcube_parse_host($default_host);
			$host = rcube_utils::parse_host($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);

			$nr = is_numeric($attrib['nr']) ? $attrib['nr'] : 1;
			$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_item = $this->texts[$domain.'.'.$name]))
			;
			// text does not exist
			else if (!($text_item = $this->texts[$name])) {
			return "[$name]";
			}

			// make text item array
			$a_text_item = is_array($text_item) ? $text_item : array('single' => $text_item);

			// decide which text to use
			if ($nr == 1) {
			$text = $a_text_item['single'];
			}
			else if ($nr > 0) {
			$text = $a_text_item['multiple'];
			}
			else if ($nr == 0) {
			if ($a_text_item['none'])
			$text = $a_text_item['none'];
			else if ($a_text_item['single'])
			$text = $a_text_item['single'];
			else if ($a_text_item['multiple'])
			$text = $a_text_item['multiple'];
			}

			// default text is single
			if ($text == '') {
			$text = $a_text_item['single'];
			}

			// 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 $text;
			}


			/**
			* 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;
			}


			@@ -1167,7 +592,7 @@
			$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();
			}

			@@ -1177,88 +602,21 @@
			*/
			public function logout_actions()
			{
			$config = $this->config->all();

			// on logout action we're not connected to imap server
			if (($config['logout_purge'] && !empty($config['trash_mbox'])) \|\| $config['logout_expunge']) {
			if (!$this->session->check_auth())
			return;

			$this->imap_connect();
			}
			$config = $this->config->all();
			$storage = $this->get_storage();

			if ($config['logout_purge'] && !empty($config['trash_mbox'])) {
			$this->imap->clear_mailbox($config['trash_mbox']);
			$storage->clear_folder($config['trash_mbox']);
			}

			if ($config['logout_expunge']) {
			$this->imap->expunge('INBOX');
			$storage->expunge_folder('INBOX');
			}

			// Try to save unsaved user preferences
			if (!empty($_SESSION['preferences'])) {
			$this->user->save_prefs(unserialize($_SESSION['preferences']));
			}
			}


			/**
			* Function to be executed in script shutdown
			* Registered with register_shutdown_function()
			*/
			public function shutdown()
			{
			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->imap))
			$this->imap->close();

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


			@@ -1271,7 +629,10 @@
			{
			$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->task . $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'];
			}

			@@ -1282,9 +643,9 @@
			* @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_utils::INPUT_POST)
			{
			$token = get_input_value('_token', $mode);
			$token = rcube_utils::get_input_value('_token', $mode);
			$sess_id = $_COOKIE[ini_get('session.name')];
			return !empty($sess_id) && $token == $this->get_request_token();
			}
			@@ -1313,133 +674,10 @@


			/**
			* 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
			*
			* @return string Valid application URL
			*/
			public function url($p)
			@@ -1454,7 +692,7 @@
			$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 = '&';
			@@ -1465,127 +703,35 @@


			/**
			* 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);

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


			/**
			* Helper method to set a cookie with the current path and host settings
			*
			* @param string Cookie name
			* @param string Cookie value
			* @param string Expiration time
			*/
			public static function setcookie($name, $value, $exp = 0)
			{
			if (headers_sent())
			return;

			$cookie = session_get_cookie_params();

			setcookie($name, $value, $exp, $cookie['path'], $cookie['domain'],
			rcube_https_check(), true);
			$log = $this->task . ($this->action ? '/'.$this->action : '') . ($mem ? " [$mem]" : '');
			if (defined('RCMAIL_START'))
			self::print_timer(RCMAIL_START, $log);
			else
			self::console($log);
			}
			}

			/**
			@@ -1601,7 +747,7 @@
			}
			}
			}


			/**
			* Returns current action filename
			*
			@@ -1625,18 +771,18 @@
			*/
			private function fix_namespace_settings($user)
			{
			$prefix = $this->imap->get_namespace('prefix');
			$prefix = $this->storage->get_namespace('prefix');
			$prefix_len = strlen($prefix);

			if (!$prefix_len)
			return;

			$prefs = $user->get_prefs();
			if (empty($prefs) \|\| $prefs['namespace_fixed'])
			$prefs = $this->config->all();
			if (!empty($prefs['namespace_fixed']))
			return;

			// Build namespace prefix regexp
			$ns = $this->imap->get_namespace();
			$ns = $this->storage->get_namespace();
			$regexp = array();

			foreach ($ns as $entry) {
			@@ -1660,10 +806,10 @@
			}
			}

			if (!empty($prefs['default_imap_folders'])) {
			foreach ($prefs['default_imap_folders'] as $idx => $name) {
			if (!empty($prefs['default_folders'])) {
			foreach ($prefs['default_folders'] as $idx => $name) {
			if ($name != 'INBOX' && !preg_match($regexp, $name)) {
			$prefs['default_imap_folders'][$idx] = $prefix.$name;
			$prefs['default_folders'][$idx] = $prefix.$name;
			}
			}
			}
			@@ -1713,7 +859,1216 @@

			// save updated preferences and reset imap settings (default folders)
			$user->save_prefs($prefs);
			$this->set_imap_prop();
			$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');
			}


			/**
			* 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, rcube_utils::remote_ip(), session_id()));
			}


			/**
			* Create a HTML table based on the given data
			*
			* @param array Named table attributes
			* @param mixed Table row data. Either a two-dimensional array or a valid SQL result set
			* @param array List of cols to show
			* @param string Name of the identifier col
			*
			* @return string HTML table code
			*/
			public function table_output($attrib, $table_data, $a_show_cols, $id_col)
			{
			$table = new html_table(/array('cols' => count($a_show_cols))/);

			// add table header
			if (!$attrib['noheader']) {
			foreach ($a_show_cols as $col) {
			$table->add_header($col, $this->Q($this->gettext($col)));
			}
			}

			if (!is_array($table_data)) {
			$db = $this->get_dbh();
			while ($table_data && ($sql_arr = $db->fetch_assoc($table_data))) {
			$table->add_row(array('id' => 'rcmrow' . rcube_utils::html_identifier($sql_arr[$id_col])));

			// format each col
			foreach ($a_show_cols as $col) {
			$table->add($col, $this->Q($sql_arr[$col]));
			}
			}
			}
			else {
			foreach ($table_data as $row_data) {
			$class = !empty($row_data['class']) ? $row_data['class'] : '';
			$rowid = 'rcmrow' . rcube_utils::html_identifier($row_data[$id_col]);

			$table->add_row(array('id' => $rowid, 'class' => $class));

			// format each col
			foreach ($a_show_cols as $col) {
			$table->add($col, $this->Q(is_array($row_data[$col]) ? $row_data[$col][0] : $row_data[$col]));
			}
			}
			}

			return $table->show($attrib);
			}


			/**
			* Convert the given date to a human readable form
			* This uses the date formatting properties from config
			*
			* @param mixed Date representation (string, timestamp or DateTime object)
			* @param string Date format to use
			* @param bool Enables date convertion according to user timezone
			*
			* @return string Formatted date string
			*/
			public function format_date($date, $format = null, $convert = true)
			{
			if (is_object($date) && is_a($date, 'DateTime')) {
			$timestamp = $date->format('U');
			}
			else {
			if (!empty($date)) {
			$timestamp = rcube_strtotime($date);
			}

			if (empty($timestamp)) {
			return '';
			}

			try {
			$date = new DateTime("@".$timestamp);
			}
			catch (Exception $e) {
			return '';
			}
			}

			if ($convert) {
			try {
			// convert to the right timezone
			$stz = date_default_timezone_get();
			$tz = new DateTimeZone($this->config->get('timezone'));
			$date->setTimezone($tz);
			date_default_timezone_set($tz->getName());

			$timestamp = $date->format('U');
			}
			catch (Exception $e) {
			}
			}

			// define date format depending on current time
			if (!$format) {
			$now = time();
			$now_date = getdate($now);
			$today_limit = mktime(0, 0, 0, $now_date['mon'], $now_date['mday'], $now_date['year']);
			$week_limit = mktime(0, 0, 0, $now_date['mon'], $now_date['mday']-6, $now_date['year']);
			$pretty_date = $this->config->get('prettydate');

			if ($pretty_date && $timestamp > $today_limit && $timestamp < $now) {
			$format = $this->config->get('date_today', $this->config->get('time_format', 'H:i'));
			$today = true;
			}
			else if ($pretty_date && $timestamp > $week_limit && $timestamp < $now) {
			$format = $this->config->get('date_short', 'D H:i');
			}
			else {
			$format = $this->config->get('date_long', 'Y-m-d H:i');
			}
			}

			// strftime() format
			if (preg_match('/%[a-z]+/i', $format)) {
			$format = strftime($format, $timestamp);
			if ($stz) {
			date_default_timezone_set($stz);
			}
			return $today ? ($this->gettext('today') . ' ' . $format) : $format;
			}

			// parse format string manually in order to provide localized weekday and month names
			// an alternative would be to convert the date() format string to fit with strftime()
			$out = '';
			for ($i=0; $i<strlen($format); $i++) {
			if ($format[$i] == "\\") { // skip escape chars
			continue;
			}

			// write char "as-is"
			if ($format[$i] == ' ' \|\| $format[$i-1] == "\\") {
			$out .= $format[$i];
			}
			// weekday (short)
			else if ($format[$i] == 'D') {
			$out .= $this->gettext(strtolower(date('D', $timestamp)));
			}
			// weekday long
			else if ($format[$i] == 'l') {
			$out .= $this->gettext(strtolower(date('l', $timestamp)));
			}
			// month name (short)
			else if ($format[$i] == 'M') {
			$out .= $this->gettext(strtolower(date('M', $timestamp)));
			}
			// month name (long)
			else if ($format[$i] == 'F') {
			$out .= $this->gettext('long'.strtolower(date('M', $timestamp)));
			}
			else if ($format[$i] == 'x') {
			$out .= strftime('%x %X', $timestamp);
			}
			else {
			$out .= date($format[$i], $timestamp);
			}
			}

			if ($today) {
			$label = $this->gettext('today');
			// replcae $ character with "Today" label (#1486120)
			if (strpos($out, '$') !== false) {
			$out = preg_replace('/\$/', $label, $out, 1);
			}
			else {
			$out = $label . ' ' . $out;
			}
			}

			if ($stz) {
			date_default_timezone_set($stz);
			}

			return $out;
			}


			/**
			* Return folders list in HTML
			*
			* @param array $attrib Named parameters
			*
			* @return string HTML code for the gui object
			*/
			public function folder_list($attrib)
			{
			static $a_mailboxes;

			$attrib += array('maxlength' => 100, 'realnames' => false, 'unreadwrap' => ' (%s)');

			$rcmail = rcmail::get_instance();
			$storage = $rcmail->get_storage();

			// add some labels to client
			$rcmail->output->add_label('purgefolderconfirm', 'deletemessagesconfirm');

			$type = $attrib['type'] ? $attrib['type'] : 'ul';
			unset($attrib['type']);

			if ($type == 'ul' && !$attrib['id']) {
			$attrib['id'] = 'rcmboxlist';
			}

			if (empty($attrib['folder_name'])) {
			$attrib['folder_name'] = '*';
			}

			// get current folder
			$mbox_name = $storage->get_folder();

			// build the folders tree
			if (empty($a_mailboxes)) {
			// get mailbox list
			$a_folders = $storage->list_folders_subscribed(
			'', $attrib['folder_name'], $attrib['folder_filter']);
			$delimiter = $storage->get_hierarchy_delimiter();
			$a_mailboxes = array();

			foreach ($a_folders as $folder) {
			$rcmail->build_folder_tree($a_mailboxes, $folder, $delimiter);
			}
			}

			// allow plugins to alter the folder tree or to localize folder names
			$hook = $rcmail->plugins->exec_hook('render_mailboxlist', array(
			'list' => $a_mailboxes,
			'delimiter' => $delimiter,
			'type' => $type,
			'attribs' => $attrib,
			));

			$a_mailboxes = $hook['list'];
			$attrib = $hook['attribs'];

			if ($type == 'select') {
			$attrib['is_escaped'] = true;
			$select = new html_select($attrib);

			// add no-selection option
			if ($attrib['noselection']) {
			$select->add(html::quote($rcmail->gettext($attrib['noselection'])), '');
			}

			$rcmail->render_folder_tree_select($a_mailboxes, $mbox_name, $attrib['maxlength'], $select, $attrib['realnames']);
			$out = $select->show($attrib['default']);
			}
			else {
			$js_mailboxlist = array();
			$out = html::tag('ul', $attrib, $rcmail->render_folder_tree_html($a_mailboxes, $mbox_name, $js_mailboxlist, $attrib), html::$common_attrib);

			$rcmail->output->add_gui_object('mailboxlist', $attrib['id']);
			$rcmail->output->set_env('mailboxes', $js_mailboxlist);
			$rcmail->output->set_env('unreadwrap', $attrib['unreadwrap']);
			$rcmail->output->set_env('collapsed_folders', (string)$rcmail->config->get('collapsed_folders'));
			}

			return $out;
			}


			/**
			* Return folders list as html_select object
			*
			* @param array $p Named parameters
			*
			* @return html_select HTML drop-down object
			*/
			public function folder_selector($p = array())
			{
			$p += array('maxlength' => 100, 'realnames' => false, 'is_escaped' => true);
			$a_mailboxes = array();
			$storage = $this->get_storage();

			if (empty($p['folder_name'])) {
			$p['folder_name'] = '*';
			}

			if ($p['unsubscribed']) {
			$list = $storage->list_folders('', $p['folder_name'], $p['folder_filter'], $p['folder_rights']);
			}
			else {
			$list = $storage->list_folders_subscribed('', $p['folder_name'], $p['folder_filter'], $p['folder_rights']);
			}

			$delimiter = $storage->get_hierarchy_delimiter();

			foreach ($list as $folder) {
			if (empty($p['exceptions']) \|\| !in_array($folder, $p['exceptions'])) {
			$this->build_folder_tree($a_mailboxes, $folder, $delimiter);
			}
			}

			$select = new html_select($p);

			if ($p['noselection']) {
			$select->add(html::quote($p['noselection']), '');
			}

			$this->render_folder_tree_select($a_mailboxes, $mbox, $p['maxlength'], $select, $p['realnames'], 0, $p);

			return $select;
			}


			/**
			* Create a hierarchical array of the mailbox list
			*/
			public function build_folder_tree(&$arrFolders, $folder, $delm = '/', $path = '')
			{
			// Handle namespace prefix
			$prefix = '';
			if (!$path) {
			$n_folder = $folder;
			$folder = $this->storage->mod_folder($folder);

			if ($n_folder != $folder) {
			$prefix = substr($n_folder, 0, -strlen($folder));
			}
			}

			$pos = strpos($folder, $delm);

			if ($pos !== false) {
			$subFolders = substr($folder, $pos+1);
			$currentFolder = substr($folder, 0, $pos);

			// sometimes folder has a delimiter as the last character
			if (!strlen($subFolders)) {
			$virtual = false;
			}
			else if (!isset($arrFolders[$currentFolder])) {
			$virtual = true;
			}
			else {
			$virtual = $arrFolders[$currentFolder]['virtual'];
			}
			}
			else {
			$subFolders = false;
			$currentFolder = $folder;
			$virtual = false;
			}

			$path .= $prefix . $currentFolder;

			if (!isset($arrFolders[$currentFolder])) {
			$arrFolders[$currentFolder] = array(
			'id' => $path,
			'name' => rcube_charset::convert($currentFolder, 'UTF7-IMAP'),
			'virtual' => $virtual,
			'folders' => array());
			}
			else {
			$arrFolders[$currentFolder]['virtual'] = $virtual;
			}

			if (strlen($subFolders)) {
			$this->build_folder_tree($arrFolders[$currentFolder]['folders'], $subFolders, $delm, $path.$delm);
			}
			}


			/**
			* Return html for a structured list <ul> for the mailbox tree
			*/
			public function render_folder_tree_html(&$arrFolders, &$mbox_name, &$jslist, $attrib, $nestLevel = 0)
			{
			$maxlength = intval($attrib['maxlength']);
			$realnames = (bool)$attrib['realnames'];
			$msgcounts = $this->storage->get_cache('messagecount');
			$collapsed = $this->config->get('collapsed_folders');

			$out = '';
			foreach ($arrFolders as $key => $folder) {
			$title = null;
			$folder_class = $this->folder_classname($folder['id']);
			$is_collapsed = strpos($collapsed, '&'.rawurlencode($folder['id']).'&') !== false;
			$unread = $msgcounts ? intval($msgcounts[$folder['id']]['UNSEEN']) : 0;

			if ($folder_class && !$realnames) {
			$foldername = $this->gettext($folder_class);
			}
			else {
			$foldername = $folder['name'];

			// shorten the folder name to a given length
			if ($maxlength && $maxlength > 1) {
			$fname = abbreviate_string($foldername, $maxlength);
			if ($fname != $foldername) {
			$title = $foldername;
			}
			$foldername = $fname;
			}
			}

			// make folder name safe for ids and class names
			$folder_id = rcube_utils::html_identifier($folder['id'], true);
			$classes = array('mailbox');

			// set special class for Sent, Drafts, Trash and Junk
			if ($folder_class) {
			$classes[] = $folder_class;
			}

			if ($folder['id'] == $mbox_name) {
			$classes[] = 'selected';
			}

			if ($folder['virtual']) {
			$classes[] = 'virtual';
			}
			else if ($unread) {
			$classes[] = 'unread';
			}

			$js_name = $this->JQ($folder['id']);
			$html_name = $this->Q($foldername) . ($unread ? html::span('unreadcount', sprintf($attrib['unreadwrap'], $unread)) : '');
			$link_attrib = $folder['virtual'] ? array() : array(
			'href' => $this->url(array('_mbox' => $folder['id'])),
			'onclick' => sprintf("return %s.command('list','%s',this)", rcmail::JS_OBJECT_NAME, $js_name),
			'rel' => $folder['id'],
			'title' => $title,
			);

			$out .= html::tag('li', array(
			'id' => "rcmli".$folder_id,
			'class' => join(' ', $classes),
			'noclose' => true),
			html::a($link_attrib, $html_name) .
			(!empty($folder['folders']) ? html::div(array(
			'class' => ($is_collapsed ? 'collapsed' : 'expanded'),
			'style' => "position:absolute",
			'onclick' => sprintf("%s.command('collapse-folder', '%s')", rcmail::JS_OBJECT_NAME, $js_name)
			), ' ') : ''));

			$jslist[$folder_id] = array(
			'id' => $folder['id'],
			'name' => $foldername,
			'virtual' => $folder['virtual']
			);

			if (!empty($folder['folders'])) {
			$out .= html::tag('ul', array('style' => ($is_collapsed ? "display:none;" : null)),
			$this->render_folder_tree_html($folder['folders'], $mbox_name, $jslist, $attrib, $nestLevel+1));
			}

			$out .= "</li>\n";
			}

			return $out;
			}


			/**
			* Return html for a flat list <select> for the mailbox tree
			*/
			public function render_folder_tree_select(&$arrFolders, &$mbox_name, $maxlength, &$select, $realnames = false, $nestLevel = 0, $opts = array())
			{
			$out = '';

			foreach ($arrFolders as $key => $folder) {
			// skip exceptions (and its subfolders)
			if (!empty($opts['exceptions']) && in_array($folder['id'], $opts['exceptions'])) {
			continue;
			}

			// skip folders in which it isn't possible to create subfolders
			if (!empty($opts['skip_noinferiors'])) {
			$attrs = $this->storage->folder_attributes($folder['id']);
			if ($attrs && in_array('\\Noinferiors', $attrs)) {
			continue;
			}
			}

			if (!$realnames && ($folder_class = $this->folder_classname($folder['id']))) {
			$foldername = $this->gettext($folder_class);
			}
			else {
			$foldername = $folder['name'];

			// shorten the folder name to a given length
			if ($maxlength && $maxlength > 1) {
			$foldername = abbreviate_string($foldername, $maxlength);
			}
			}

			$select->add(str_repeat(' ', $nestLevel*4) . html::quote($foldername), $folder['id']);

			if (!empty($folder['folders'])) {
			$out .= $this->render_folder_tree_select($folder['folders'], $mbox_name, $maxlength,
			$select, $realnames, $nestLevel+1, $opts);
			}
			}

			return $out;
			}


			/**
			* Return internal name for the given folder if it matches the configured special folders
			*/
			public function folder_classname($folder_id)
			{
			if ($folder_id == 'INBOX') {
			return 'inbox';
			}

			// for these mailboxes we have localized labels and css classes
			foreach (array('sent', 'drafts', 'trash', 'junk') as $smbx)
			{
			if ($folder_id === $this->config->get($smbx.'_mbox')) {
			return $smbx;
			}
			}
			}


			/**
			* Try to localize the given IMAP folder name.
			* UTF-7 decode it in case no localized text was found
			*
			* @param string $name Folder name
			*
			* @return string Localized folder name in UTF-8 encoding
			*/
			public function localize_foldername($name)
			{
			if ($folder_class = $this->folder_classname($name)) {
			return $this->gettext($folder_class);
			}
			else {
			return rcube_charset::convert($name, 'UTF7-IMAP');
			}
			}


			public function localize_folderpath($path)
			{
			$protect_folders = $this->config->get('protect_default_folders');
			$default_folders = (array) $this->config->get('default_folders');
			$delimiter = $this->storage->get_hierarchy_delimiter();
			$path = explode($delimiter, $path);
			$result = array();

			foreach ($path as $idx => $dir) {
			$directory = implode($delimiter, array_slice($path, 0, $idx+1));
			if ($protect_folders && in_array($directory, $default_folders)) {
			unset($result);
			$result[] = $this->localize_foldername($directory);
			}
			else {
			$result[] = rcube_charset::convert($dir, 'UTF7-IMAP');
			}
			}

			return implode($delimiter, $result);
			}


			public static function quota_display($attrib)
			{
			$rcmail = rcmail::get_instance();

			if (!$attrib['id']) {
			$attrib['id'] = 'rcmquotadisplay';
			}

			$_SESSION['quota_display'] = !empty($attrib['display']) ? $attrib['display'] : 'text';

			$rcmail->output->add_gui_object('quotadisplay', $attrib['id']);

			$quota = $rcmail->quota_content($attrib);

			$rcmail->output->add_script('rcmail.set_quota('.rcube_output::json_serialize($quota).');', 'docready');

			return html::span($attrib, '');
			}


			public function quota_content($attrib = null)
			{
			$quota = $this->storage->get_quota();
			$quota = $this->plugins->exec_hook('quota', $quota);

			$quota_result = (array) $quota;
			$quota_result['type'] = isset($_SESSION['quota_display']) ? $_SESSION['quota_display'] : '';

			if (!$quota['total'] && $this->config->get('quota_zero_as_unlimited')) {
			$quota_result['title'] = $this->gettext('unlimited');
			$quota_result['percent'] = 0;
			}
			else if ($quota['total']) {
			if (!isset($quota['percent'])) {
			$quota_result['percent'] = min(100, round(($quota['used']/max(1,$quota['total']))*100));
			}

			$title = sprintf('%s / %s (%.0f%%)',
			$this->show_bytes($quota['used'] * 1024), $this->show_bytes($quota['total'] * 1024),
			$quota_result['percent']);

			$quota_result['title'] = $title;

			if ($attrib['width']) {
			$quota_result['width'] = $attrib['width'];
			}
			if ($attrib['height']) {
			$quota_result['height'] = $attrib['height'];
			}
			}
			else {
			$quota_result['title'] = $this->gettext('unknown');
			$quota_result['percent'] = 0;
			}

			return $quota_result;
			}


			/**
			* Outputs error message according to server error/response codes
			*
			* @param string $fallback Fallback message label
			* @param array $fallback_args Fallback message label arguments
			*/
			public function display_server_error($fallback = null, $fallback_args = null)
			{
			$err_code = $this->storage->get_error_code();
			$res_code = $this->storage->get_response_code();

			if ($err_code < 0) {
			$this->output->show_message('storageerror', 'error');
			}
			else if ($res_code == rcube_storage::NOPERM) {
			$this->output->show_message('errornoperm', 'error');
			}
			else if ($res_code == rcube_storage::READONLY) {
			$this->output->show_message('errorreadonly', 'error');
			}
			else if ($err_code && ($err_str = $this->storage->get_error_str())) {
			// try to detect access rights problem and display appropriate message
			if (stripos($err_str, 'Permission denied') !== false) {
			$this->output->show_message('errornoperm', 'error');
			}
			else {
			$this->output->show_message('servererrormsg', 'error', array('msg' => $err_str));
			}
			}
			else if ($fallback) {
			$this->output->show_message($fallback, 'error', $fallback_args);
			}
			}


			/**
			* Output HTML editor scripts
			*
			* @param string $mode Editor mode
			*/
			public function html_editor($mode = '')
			{
			$hook = $this->plugins->exec_hook('html_editor', array('mode' => $mode));

			if ($hook['abort']) {
			return;
			}

			$lang = strtolower($_SESSION['language']);

			// TinyMCE uses two-letter lang codes, with exception of Chinese
			if (strpos($lang, 'zh_') === 0) {
			$lang = str_replace('_', '-', $lang);
			}
			else {
			$lang = substr($lang, 0, 2);
			}

			if (!file_exists(INSTALL_PATH . 'program/js/tiny_mce/langs/'.$lang.'.js')) {
			$lang = 'en';
			}

			$script = json_encode(array(
			'mode' => $mode,
			'lang' => $lang,
			'skin_path' => $this->output->get_skin_path(),
			'spellcheck' => intval($this->config->get('enable_spellcheck')),
			'spelldict' => intval($this->config->get('spellcheck_dictionary'))
			));

			$this->output->include_script('tiny_mce/tiny_mce.js');
			$this->output->include_script('editor.js');
			$this->output->add_script("rcmail_editor_init($script)", 'docready');
			}


			/**
			* Replaces TinyMCE's emoticon images with plain-text representation
			*
			* @param string $html HTML content
			*
			* @return string HTML content
			*/
			public static function replace_emoticons($html)
			{
			$emoticons = array(
			'8-)' => 'smiley-cool',
			':-#' => 'smiley-foot-in-mouth',
			':-*' => 'smiley-kiss',
			':-X' => 'smiley-sealed',
			':-P' => 'smiley-tongue-out',
			':-@' => 'smiley-yell',
			":'(" => 'smiley-cry',
			':-(' => 'smiley-frown',
			':-D' => 'smiley-laughing',
			':-)' => 'smiley-smile',
			':-S' => 'smiley-undecided',
			':-$' => 'smiley-embarassed',
			'O:-)' => 'smiley-innocent',
			':-\|' => 'smiley-money-mouth',
			':-O' => 'smiley-surprised',
			';-)' => 'smiley-wink',
			);

			foreach ($emoticons as $idx => $file) {
			// <img title="Cry" src="http://.../program/js/tiny_mce/plugins/emotions/img/smiley-cry.gif" border="0" alt="Cry" />
			$search[] = '/<img title="[a-z ]+" src="https?:\/\/[a-z0-9_.\/-]+\/tiny_mce\/plugins\/emotions\/img\/'.$file.'.gif"[^>]+\/>/i';
			$replace[] = $idx;
			}

			return preg_replace($search, $replace, $html);
			}


			/**
			* File upload progress handler.
			*/
			public function upload_progress()
			{
			$prefix = ini_get('apc.rfc1867_prefix');
			$params = array(
			'action' => $this->action,
			'name' => rcube_utils::get_input_value('_progress', rcube_utils::INPUT_GET),
			);

			if (function_exists('apc_fetch')) {
			$status = apc_fetch($prefix . $params['name']);

			if (!empty($status)) {
			$status['percent'] = round($status['current']/$status['total']*100);
			$params = array_merge($status, $params);
			}
			}

			if (isset($params['percent']))
			$params['text'] = $this->gettext(array('name' => 'uploadprogress', 'vars' => array(
			'percent' => $params['percent'] . '%',
			'current' => $this->show_bytes($params['current']),
			'total' => $this->show_bytes($params['total'])
			)));

			$this->output->command('upload_progress_update', $params);
			$this->output->send();
			}


			/**
			* Initializes file uploading interface.
			*/
			public function upload_init()
			{
			// Enable upload progress bar
			if (($seconds = $this->config->get('upload_progress')) && ini_get('apc.rfc1867')) {
			if ($field_name = ini_get('apc.rfc1867_name')) {
			$this->output->set_env('upload_progress_name', $field_name);
			$this->output->set_env('upload_progress_time', (int) $seconds);
			}
			}

			// find max filesize value
			$max_filesize = parse_bytes(ini_get('upload_max_filesize'));
			$max_postsize = parse_bytes(ini_get('post_max_size'));
			if ($max_postsize && $max_postsize < $max_filesize) {
			$max_filesize = $max_postsize;
			}

			$this->output->set_env('max_filesize', $max_filesize);
			$max_filesize = self::show_bytes($max_filesize);
			$this->output->set_env('filesizeerror', $this->gettext(array(
			'name' => 'filesizeerror', 'vars' => array('size' => $max_filesize))));

			return $max_filesize;
			}


			/**
			* Initializes client-side autocompletion.
			*/
			public function autocomplete_init()
			{
			static $init;

			if ($init) {
			return;
			}

			$init = 1;

			if (($threads = (int)$this->config->get('autocomplete_threads')) > 0) {
			$book_types = (array) $this->config->get('autocomplete_addressbooks', 'sql');
			if (count($book_types) > 1) {
			$this->output->set_env('autocomplete_threads', $threads);
			$this->output->set_env('autocomplete_sources', $book_types);
			}
			}

			$this->output->set_env('autocomplete_max', (int)$this->config->get('autocomplete_max', 15));
			$this->output->set_env('autocomplete_min_length', $this->config->get('autocomplete_min_length'));
			$this->output->add_label('autocompletechars', 'autocompletemore');
			}


			/**
			* Returns supported font-family specifications
			*
			* @param string $font Font name
			*
			* @param string\|array Font-family specification array or string (if $font is used)
			*/
			public static function font_defs($font = null)
			{
			$fonts = array(
			'Andale Mono' => '"Andale Mono",Times,monospace',
			'Arial' => 'Arial,Helvetica,sans-serif',
			'Arial Black' => '"Arial Black","Avant Garde",sans-serif',
			'Book Antiqua' => '"Book Antiqua",Palatino,serif',
			'Courier New' => '"Courier New",Courier,monospace',
			'Georgia' => 'Georgia,Palatino,serif',
			'Helvetica' => 'Helvetica,Arial,sans-serif',
			'Impact' => 'Impact,Chicago,sans-serif',
			'Tahoma' => 'Tahoma,Arial,Helvetica,sans-serif',
			'Terminal' => 'Terminal,Monaco,monospace',
			'Times New Roman' => '"Times New Roman",Times,serif',
			'Trebuchet MS' => '"Trebuchet MS",Geneva,sans-serif',
			'Verdana' => 'Verdana,Geneva,sans-serif',
			);

			if ($font) {
			return $fonts[$font];
			}

			return $fonts;
			}


			/**
			* Create a human readable string for a number of bytes
			*
			* @param int Number of bytes
			*
			* @return string Byte string
			*/
			public function show_bytes($bytes)
			{
			if ($bytes >= 1073741824) {
			$gb = $bytes/1073741824;
			$str = sprintf($gb>=10 ? "%d " : "%.1f ", $gb) . $this->gettext('GB');
			}
			else if ($bytes >= 1048576) {
			$mb = $bytes/1048576;
			$str = sprintf($mb>=10 ? "%d " : "%.1f ", $mb) . $this->gettext('MB');
			}
			else if ($bytes >= 1024) {
			$str = sprintf("%d ", round($bytes/1024)) . $this->gettext('KB');
			}
			else {
			$str = sprintf('%d ', $bytes) . $this->gettext('B');
			}

			return $str;
			}


			/**
			* Quote a given string.
			* Shortcut function for rcube_utils::rep_specialchars_output()
			*
			* @return string HTML-quoted string
			*/
			public static function Q($str, $mode = 'strict', $newlines = true)
			{
			return rcube_utils::rep_specialchars_output($str, 'html', $mode, $newlines);
			}


			/**
			* Quote a given string for javascript output.
			* Shortcut function for rcube_utils::rep_specialchars_output()
			*
			* @return string JS-quoted string
			*/
			public static function JQ($str)
			{
			return rcube_utils::rep_specialchars_output($str, 'js');
			}


			/**
			* Returns real size (calculated) of the message part
			*
			* @param rcube_message_part Message part
			*
			* @return string Part size (and unit)
			*/
			public function message_part_size($part)
			{
			if (isset($part->d_parameters['size'])) {
			$size = $this->show_bytes((int)$part->d_parameters['size']);
			}
			else {
			$size = $part->size;
			if ($part->encoding == 'base64') {
			$size = $size / 1.33;
			}

			$size = '~' . $this->show_bytes($size);
			}

			return $size;
			}


			/************************************************************************
			******* Deprecated methods (to be removed) *******
			***********************************************************************/

			public static function setcookie($name, $value, $exp = 0)
			{
			rcube_utils::setcookie($name, $value, $exp);
			}

			public function imap_connect()
			{
			return $this->storage_connect();
			}

			public function imap_init()
			{
			return $this->storage_init();
			}

			/**
			* 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, $ssl)) {
			if (is_object($this->output)) {
			$error = $storage->get_error_code() == -1 ? 'storageerror' : 'sessionerror';
			$this->output->show_message($error, 'error');
			}
			}
			else {
			$this->set_storage_prop();
			return $storage->is_connected();
			}
			}

			return false;
			}
			}