Merge branch 'master' of github.com:roundcube/roundcubemail

19 files changed, 960 insertions, 764 deletions

diff --git a/program/include/html.php b/program/include/html.php
index d15d50875..c6507f813 100644
--- a/program/include/html.php
+++ b/program/include/html.php
@@ -154,7 +154,7 @@ class html
             $attr = array('src' => $attr);
         }
         return self::tag('img', $attr + array('alt' => ''), null, array_merge(self::$common_attrib,
-	        array('src','alt','width','height','border','usemap','onclick')));
+            array('src','alt','width','height','border','usemap','onclick')));
     }
 
     /**
diff --git a/program/include/rcmail.php b/program/include/rcmail.php
index a6b0bcd57..02f38e647 100644
--- a/program/include/rcmail.php
+++ b/program/include/rcmail.php
@@ -157,14 +157,16 @@ class rcmail extends rcube
       $this->config->set_user_prefs((array)$this->user->get_prefs());
     }
 
-    $_SESSION['language'] = $this->user->language = $this->language_prop($this->config->get('language', $_SESSION['language']));
+    $lang = $this->language_prop($this->config->get('language', $_SESSION['language']));
+    $_SESSION['language'] = $this->user->language = $lang;
 
     // set localization
-    setlocale(LC_ALL, $_SESSION['language'] . '.utf8', 'en_US.utf8');
+    setlocale(LC_ALL, $lang . '.utf8', $lang . '.UTF-8', 'en_US.utf8', 'en_US.UTF-8');
 
     // workaround for http://bugs.php.net/bug.php?id=18556
-    if (in_array($_SESSION['language'], array('tr_TR', 'ku', 'az_AZ')))
-      setlocale(LC_CTYPE, 'en_US' . '.utf8');
+    if (in_array($lang, array('tr_TR', 'ku', 'az_AZ'))) {
+      setlocale(LC_CTYPE, 'en_US.utf8', 'en_US.UTF-8');
+    }
   }
 
 
@@ -306,7 +308,7 @@ class rcmail extends rcube
 
   /**
    * Init output object for GUI and add common scripts.
-   * This will instantiate a rcmail_template object and set
+   * This will instantiate a rcube_output_html object and set
    * environment vars according to the current session and configuration
    *
    * @param boolean True if this request is loaded in a (i)frame
@@ -453,7 +455,14 @@ class rcmail extends rcube
     // 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);
+      if ($config['login_lc'] == 2 || $config['login_lc'] === true) {
+        $username = mb_strtolower($username);
+      }
+      else if (strpos($username, '@')) {
+        // lowercase domain name
+        list($local, $domain) = explode('@', $username);
+        $username = $local . '@' . mb_strtolower($domain);
+      }
     }
 
     // try to resolve email address from virtuser table
@@ -463,17 +472,13 @@ class rcmail extends rcube
 
     // Here we need IDNA ASCII
     // Only rcube_contacts class is using domain names in Unicode
-    $host = rcube_utils::idn_to_ascii($host);
-    if (strpos($username, '@')) {
-      // lowercase domain name
-      list($local, $domain) = explode('@', $username);
-      $username = $local . '@' . mb_strtolower($domain);
-      $username = rcube_utils::idn_to_ascii($username);
-    }
+    $host     = rcube_utils::idn_to_ascii($host);
+    $username = rcube_utils::idn_to_ascii($username);
 
     // user already registered -> overwrite username
-    if ($user = rcube_user::query($username, $host))
+    if ($user = rcube_user::query($username, $host)) {
       $username = $user->data['username'];
+    }
 
     $storage = $this->get_storage();
 
@@ -1204,7 +1209,7 @@ class rcmail extends rcube
         }
         else {
             if (!empty($date)) {
-                $timestamp = rcube_strtotime($date);
+                $timestamp = rcube_utils::strtotime($date);
             }
 
             if (empty($timestamp)) {
diff --git a/program/include/rcube.php b/program/include/rcube.php
index 494b5c3dd..0e40b3c6b 100644
--- a/program/include/rcube.php
+++ b/program/include/rcube.php
@@ -25,364 +25,372 @@
  * Base class of the Roundcube Framework
  * implemented as singleton
  *
- * @package Core
+ * @package    Framework
+ * @subpackage Core
  */
 class rcube
 {
-  const INIT_WITH_DB = 1;
-  const INIT_WITH_PLUGINS = 2;
-
-  /**
-   * Singleton instace of rcube
-   *
-   * @var rcmail
-   */
-  static protected $instance;
-
-  /**
-   * Stores instance of rcube_config.
-   *
-   * @var rcube_config
-   */
-  public $config;
-
-  /**
-   * Instace of database class.
-   *
-   * @var rcube_pdo
-   */
-  public $db;
-
-  /**
-   * Instace of Memcache class.
-   *
-   * @var Memcache
-   */
-  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_output class.
-   *
-   * @var rcube_output
-   */
-  public $output;
-
-  /**
-   * Instance of rcube_plugin_api.
-   *
-   * @var rcube_plugin_api
-   */
-  public $plugins;
-
-
-  /* private/protected vars */
-  protected $texts;
-  protected $caches = array();
-  protected $shutdown_functions = array();
-  protected $expunge_cache = false;
-
-
-  /**
-   * This implements the 'singleton' design pattern
-   *
-   * @param integer Options to initialize with this instance. See rcube::INIT_WITH_* constants
-   * @return rcube The one and only instance
-   */
-  static function get_instance($mode = 0)
-  {
-    if (!self::$instance) {
-      self::$instance = new rcube();
-      self::$instance->init($mode);
-    }
+    const INIT_WITH_DB = 1;
+    const INIT_WITH_PLUGINS = 2;
 
-    return self::$instance;
-  }
-
-
-  /**
-   * Private constructor
-   */
-  protected function __construct()
-  {
-    // load configuration
-    $this->config = new rcube_config();
-    $this->plugins = new rcube_dummy_plugin_api;
-
-    register_shutdown_function(array($this, 'shutdown'));
-  }
-
-
-  /**
-   * Initial startup function
-   */
-  protected function init($mode = 0)
-  {
-    // initialize syslog
-    if ($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);
-    }
+    /**
+     * Singleton instace of rcube
+     *
+     * @var rcmail
+     */
+    static protected $instance;
 
-    // connect to database
-    if ($mode & self::INIT_WITH_DB) {
-      $this->get_dbh();
-    }
+    /**
+     * Stores instance of rcube_config.
+     *
+     * @var rcube_config
+     */
+    public $config;
+
+    /**
+     * Instace of database class.
+     *
+     * @var rcube_db
+     */
+    public $db;
+
+    /**
+     * Instace of Memcache class.
+     *
+     * @var Memcache
+     */
+    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_output class.
+     *
+     * @var rcube_output
+     */
+    public $output;
+
+    /**
+     * Instance of rcube_plugin_api.
+     *
+     * @var rcube_plugin_api
+     */
+    public $plugins;
 
-    // create plugin API and load plugins
-    if ($mode & self::INIT_WITH_PLUGINS) {
-      $this->plugins = rcube_plugin_api::get_instance();
+
+    /* private/protected vars */
+    protected $texts;
+    protected $caches = array();
+    protected $shutdown_functions = array();
+    protected $expunge_cache = false;
+
+
+    /**
+     * This implements the 'singleton' design pattern
+     *
+     * @param integer Options to initialize with this instance. See rcube::INIT_WITH_* constants
+     *
+     * @return rcube The one and only instance
+     */
+    static function get_instance($mode = 0)
+    {
+        if (!self::$instance) {
+            self::$instance = new rcube();
+            self::$instance->init($mode);
+        }
+
+        return self::$instance;
     }
-  }
-
-
-  /**
-   * Get the current database connection
-   *
-   * @return rcube_pdo  Database connection object
-   */
-  public function get_dbh()
-  {
-    if (!$this->db) {
-      $config_all = $this->config->all();
-      $this->db = rcube_db::factory($config_all['db_dsnw'], $config_all['db_dsnr'], $config_all['db_persistent']);
-      $this->db->set_debug((bool)$config_all['sql_debug']);
+
+
+    /**
+     * Private constructor
+     */
+    protected function __construct()
+    {
+        // load configuration
+        $this->config  = new rcube_config;
+        $this->plugins = new rcube_dummy_plugin_api;
+
+        register_shutdown_function(array($this, 'shutdown'));
     }
 
-    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;
-      $this->mc_available = 0;
+    /**
+     * Initial startup function
+     */
+    protected function init($mode = 0)
+    {
+        // 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);
+        }
 
-      // add all configured hosts to pool
-      $pconnect = $this->config->get('memcache_pconnect', true);
-      foreach ($this->config->get('memcache_hosts', array()) as $host) {
-        if (substr($host, 0, 7) != 'unix://') {
-          list($host, $port) = explode(':', $host);
-          if (!$port) $port = 11211;
+        // connect to database
+        if ($mode & self::INIT_WITH_DB) {
+            $this->get_dbh();
         }
-        else {
-          $port = 0;
+
+        // create plugin API and load plugins
+        if ($mode & self::INIT_WITH_PLUGINS) {
+            $this->plugins = rcube_plugin_api::get_instance();
         }
+    }
 
-        $this->mc_available += intval($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)
-      $this->memcache->increment('__CONNECTIONTEST__', 1);  // NOP if key doesn't exist
+    /**
+     * Get the current database connection
+     *
+     * @return rcube_db Database object
+     */
+    public function get_dbh()
+    {
+        if (!$this->db) {
+            $config_all = $this->config->all();
+            $this->db = rcube_db::factory($config_all['db_dsnw'], $config_all['db_dsnr'], $config_all['db_persistent']);
+            $this->db->set_debug((bool)$config_all['sql_debug']);
+        }
 
-      if (!$this->mc_available)
-        $this->memcache = false;
+        return $this->db;
     }
 
-    return $this->memcache;
-  }
 
+    /**
+     * 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;
+            }
 
-  /**
-   * Callback for memcache failure
-   */
-  public function memcache_failure($host, $port)
-  {
-    static $seen = array();
+            $this->memcache     = new Memcache;
+            $this->mc_available = 0;
 
-    // only report once
-    if (!$seen["$host:$port"]++) {
-      $this->mc_available--;
-      self::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 string $ttl    Expiration time for cache items
-   * @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[$name]) && ($userid = $this->get_user_id())) {
-      $this->caches[$name] = new rcube_cache($type, $userid, $name, $ttl, $packed);
-    }
+            // add all configured hosts to pool
+            $pconnect = $this->config->get('memcache_pconnect', true);
+            foreach ($this->config->get('memcache_hosts', array()) as $host) {
+                if (substr($host, 0, 7) != 'unix://') {
+                    list($host, $port) = explode(':', $host);
+                    if (!$port) $port = 11211;
+                }
+                else {
+                    $port = 0;
+                }
 
-    return $this->caches[$name];
-  }
-
-
-  /**
-   * 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();
-    }
+                $this->mc_available += intval($this->memcache->addServer(
+                    $host, $port, $pconnect, 1, 1, 15, false, array($this, 'memcache_failure')));
+            }
 
-    return $this->storage;
-  }
+            // 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;
+            }
+        }
 
-  /**
-   * Initialize storage object
-   */
-  public function storage_init()
-  {
-    // already initialized
-    if (is_object($this->storage)) {
-      return;
+        return $this->memcache;
     }
 
-    $driver = $this->config->get('storage_driver', 'imap');
-    $driver_class = "rcube_{$driver}";
 
-    if (!class_exists($driver_class)) {
-      self::raise_error(array(
-        'code' => 700, 'type' => 'php',
-        'file' => __FILE__, 'line' => __LINE__,
-        'message' => "Storage driver class ($driver) not found!"),
-        true, true);
+    /**
+     * Callback for memcache failure
+     */
+    public function memcache_failure($host, $port)
+    {
+        static $seen = array();
+
+        // only report once
+        if (!$seen["$host:$port"]++) {
+            $this->mc_available--;
+            self::raise_error(array(
+                'code' => 604, 'type' => 'db',
+                'line' => __LINE__, 'file' => __FILE__,
+                'message' => "Memcache failure on host $host:$port"),
+                true, false);
+        }
     }
 
-    // Initialize storage object
-    $this->storage = new $driver_class;
 
-    // for backward compat. (deprecated, will be removed)
-    $this->imap = $this->storage;
+    /**
+     * Initialize and get cache object
+     *
+     * @param string $name   Cache identifier
+     * @param string $type   Cache type ('db', 'apc' or 'memcache')
+     * @param string $ttl    Expiration time for cache items
+     * @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[$name]) && ($userid = $this->get_user_id())) {
+            $this->caches[$name] = new rcube_cache($type, $userid, $name, $ttl, $packed);
+        }
 
-    // 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;
+        return $this->caches[$name];
     }
 
-    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 = $this->config->get('pagesize', 50);
+    /**
+     * Create SMTP object and connect to server
+     *
+     * @param boolean True if connection should be established
+     */
+    public function smtp_init($connect = false)
+    {
+        $this->smtp = new rcube_smtp();
+
+        if ($connect) {
+            $this->smtp->connect();
+        }
     }
-    $this->storage->set_pagesize($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']);
-      $_SESSION[$driver.'_host'] = $_SESSION['storage_host'];
+
+
+    /**
+     * Initialize and get storage object
+     *
+     * @return rcube_storage Storage object
+     */
+    public function get_storage()
+    {
+        // already initialized
+        if (!is_object($this->storage)) {
+            $this->storage_init();
+        }
+
+        return $this->storage;
     }
 
-    $options = $this->plugins->exec_hook("storage_init", $options);
 
-    // for backward compat. (deprecated, to be removed)
-    $options = $this->plugins->exec_hook("imap_init", $options);
+    /**
+     * Initialize storage object
+     */
+    public function storage_init()
+    {
+        // already initialized
+        if (is_object($this->storage)) {
+            return;
+        }
 
-    $this->storage->set_options($options);
-    $this->set_storage_prop();
-  }
+        $driver       = $this->config->get('storage_driver', 'imap');
+        $driver_class = "rcube_{$driver}";
 
+        if (!class_exists($driver_class)) {
+            self::raise_error(array(
+                'code' => 700, 'type' => 'php',
+                'file' => __FILE__, 'line' => __LINE__,
+                'message' => "Storage driver class ($driver) not found!"),
+                true, true);
+        }
 
-  /**
-   * Set storage parameters.
-   * This must be done AFTER connecting to the server!
-   */
-  protected function set_storage_prop()
-  {
-    $storage = $this->get_storage();
+        // Initialize storage object
+        $this->storage = new $driver_class;
 
-    $storage->set_charset($this->config->get('default_charset', RCMAIL_CHARSET));
+        // for backward compat. (deprecated, will be removed)
+        $this->imap = $this->storage;
 
-    if ($default_folders = $this->config->get('default_folders')) {
-      $storage->set_default_folders($default_folders);
-    }
-    if (isset($_SESSION['mbox'])) {
-      $storage->set_folder($_SESSION['mbox']);
+        // 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']);
+            $_SESSION[$driver.'_host'] = $_SESSION['storage_host'];
+        }
+
+        $options = $this->plugins->exec_hook("storage_init", $options);
+
+        // for backward compat. (deprecated, to be removed)
+        $options = $this->plugins->exec_hook("imap_init", $options);
+
+        $this->storage->set_options($options);
+        $this->set_storage_prop();
     }
-    if (isset($_SESSION['page'])) {
-      $storage->set_page($_SESSION['page']);
+
+
+    /**
+     * Set storage parameters.
+     * This must be done AFTER connecting to the server!
+     */
+    protected 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']);
+        }
     }
-  }
 
 
     /**
@@ -397,12 +405,17 @@ class rcube
 
         $sess_name   = $this->config->get('session_name');
         $sess_domain = $this->config->get('session_domain');
+        $sess_path   = $this->config->get('session_path');
         $lifetime    = $this->config->get('session_lifetime', 0) * 60;
 
         // set session domain
         if ($sess_domain) {
             ini_set('session.cookie_domain', $sess_domain);
         }
+        // set session path
+        if ($sess_path) {
+            ini_set('session.cookie_path', $sess_path);
+        }
         // set session garbage collecting time according to session_lifetime
         if ($lifetime) {
             ini_set('session.gc_maxlifetime', $lifetime * 2);
@@ -492,433 +505,469 @@ class rcube
     }
 
 
-  /**
-   * 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]";
-    }
+    /**
+     * 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();
+        }
 
-    // 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, $text);
-    }
+        // extract attributes
+        if (is_string($attrib)) {
+            $attrib = array('name' => $attrib);
+        }
 
-    // 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;
-    }
+        $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;
+        }
 
-    // any of loaded domains (plugins)
-    if ($domain == '*') {
-      foreach ($this->plugins->loaded_plugins() as $domain)
-        if (isset($this->texts[$domain.'.'.$name])) {
-          $ref_domain = $domain;
-          return true;
+        // check for text with domain
+        if ($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($text, array('\n' => "\n"));
     }
-    // specified domain
-    else if ($domain) {
-      $ref_domain = $domain;
-      return isset($this->texts[$domain.'.'.$name]);
+
+
+    /**
+     * 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;
     }
 
-    return false;
-  }
 
-  /**
-   * Load a localization package
-   *
-   * @param string Language ID
-   */
-  public function load_language($lang = null, $add = array())
-  {
-    $lang = $this->language_prop(($lang ? $lang : $_SESSION['language']));
+    /**
+     * Load a localization package
+     *
+     * @param string Language ID
+     * @param array  Additional text labels/messages
+     */
+    public function load_language($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();
 
-    // 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();
 
-      // 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');
 
-      // 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);
 
-      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' && $lang != 'en_US' && 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');
 
-      // include user language files
-      if ($lang != 'en' && $lang != 'en_US' && 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);
+            }
 
-        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();
 
-      ob_end_clean();
+            $_SESSION['language'] = $lang;
+        }
 
-      $_SESSION['language'] = $lang;
+        // append additional texts (from plugin)
+        if (is_array($add) && !empty($add)) {
+            $this->texts += $add;
+        }
     }
 
-    // append additional texts (from plugin)
-    if (is_array($add) && !empty($add))
-      $this->texts += $add;
-  }
-
-
-  /**
-   * Check the given string and return a valid language code
-   *
-   * @param string Language code
-   * @return string Valid language code
-   */
-  protected function language_prop($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];
+    /**
+     * Check the given string and return a valid language code
+     *
+     * @param string Language code
+     *
+     * @return string Valid language code
+     */
+    protected 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 $lang;
     }
-    // try the first two chars
-    else if (!isset($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);
-      }
+
+
+    /**
+     * 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;
     }
 
-    if (!isset($rcube_languages[$lang]) || !is_dir(INSTALL_PATH . 'program/localization/' . $lang)) {
-      $lang = 'en_US';
+
+    /**
+     * 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 {
+                self::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;
     }
 
-    return $lang;
-  }
 
+    /**
+     * 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 '';
+        }
 
-  /**
-   * 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();
+        $cipher = $base64 ? base64_decode($cipher) : $cipher;
 
-    if (!sizeof($sa_languages)) {
-      @include(INSTALL_PATH . 'program/localization/index.inc');
+        if (function_exists('mcrypt_module_open') &&
+            ($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, ""))
+        ) {
+            $iv_size = mcrypt_enc_get_iv_size($td);
+            $iv = substr($cipher, 0, $iv_size);
 
-      if ($dh = @opendir(INSTALL_PATH . 'program/localization')) {
-        while (($name = readdir($dh)) !== false) {
-          if ($name[0] == '.' || !is_dir(INSTALL_PATH . 'program/localization/' . $name))
-            continue;
+            // session corruption? (#1485970)
+            if (strlen($iv) < $iv_size) {
+                return '';
+            }
 
-          if ($label = $rcube_languages[$name])
-            $sa_languages[$name] = $label;
+            $cipher = substr($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, $iv);
+            }
+            else {
+                self::raise_error(array(
+                    'code' => 500, 'type' => 'php',
+                    'file' => __FILE__, 'line' => __LINE__,
+                    'message' => "Could not perform decryption; make sure Mcrypt is installed or lib/des.inc is available"
+                    ), true, true);
+            }
         }
-        closedir($dh);
-      }
+
+        /*-
+         * Trim PHP's padding and the canary byte; see note in
+         * rcube::encrypt() and http://php.net/mcrypt_generic#68082
+         */
+        $clear = substr(rtrim($clear, "\0"), 0, -1);
+
+        return $clear;
     }
 
-    return $sa_languages;
-  }
-
-
-  /**
-   * 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
+
+    /**
+     * Generates encryption initialization vector (IV)
+     *
+     * @param int Vector size
+     *
+     * @return string Vector string
      */
-    $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, $iv);
-      }
-      else {
-        self::raise_error(array(
-          'code' => 500, 'type' => 'php',
-          'file' => __FILE__, 'line' => __LINE__,
-          'message' => "Could not perform encryption; make sure Mcrypt is installed or lib/des.inc is available"
-        ), true, true);
-      }
+    private function create_iv($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;
     }
 
-    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, $iv);
-      }
-      else {
-        self::raise_error(array(
-          'code' => 500, 'type' => 'php',
-          'file' => __FILE__, 'line' => __LINE__,
-          'message' => "Could not perform decryption; make sure Mcrypt is installed or lib/des.inc is available"
-        ), true, true);
-      }
+    /**
+     * Build a valid URL to this instance of Roundcube
+     *
+     * @param mixed Either a string with the action or url parameters as key-value pairs
+     * @return string Valid application URL
+     */
+    public function url($p)
+    {
+        // STUB: should be overloaded by the application
+        return '';
     }
 
-    /*-
-     * Trim PHP's padding and the canary byte; see note in
-     * rcube::encrypt() and http://php.net/mcrypt_generic#68082
+
+    /**
+     * Function to be executed in script shutdown
+     * Registered with register_shutdown_function()
      */
-    $clear = substr(rtrim($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)
-  {
-      // STUB: should be overloaded by the application
-      return '';
-  }
-
-
-  /**
-   * 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->caches as $cache) {
-        if (is_object($cache))
-            $cache->close();
-    }
+    public function shutdown()
+    {
+        foreach ($this->shutdown_functions as $function) {
+            call_user_func($function);
+        }
+
+        if (is_object($this->smtp)) {
+            $this->smtp->disconnect();
+        }
+
+        foreach ($this->caches as $cache) {
+            if (is_object($cache)) {
+                $cache->close();
+            }
+        }
 
-    if (is_object($this->storage)) {
-      if ($this->expunge_cache)
-        $this->storage->expunge_cache();
-      $this->storage->close();
+        if (is_object($this->storage)) {
+            if ($this->expunge_cache) {
+                $this->storage->expunge_cache();
+            }
+            $this->storage->close();
+        }
     }
-  }
-
-
-  /**
-   * Registers shutdown function to be executed on shutdown.
-   * The functions will be executed before destroying any
-   * objects like smtp, imap, session, etc.
-   *
-   * @param callback Function callback
-   */
-  public function add_shutdown_function($function)
-  {
-    $this->shutdown_functions[] = $function;
-  }
-
-
-  /**
-   * 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(" ", $parts);
+
+
+    /**
+     * Registers shutdown function to be executed on shutdown.
+     * The functions will be executed before destroying any
+     * objects like smtp, imap, session, etc.
+     *
+     * @param callback Function callback
+     */
+    public function add_shutdown_function($function)
+    {
+        $this->shutdown_functions[] = $function;
     }
 
-    // use strtr behaviour of going through source string once
-    $cmd = strtr($cmd, $replacements);
 
-    return (string)shell_exec($cmd);
-  }
+    /**
+     * 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);
+        }
+
+        // use strtr behaviour of going through source string once
+        $cmd = strtr($cmd, $replacements);
+
+        return (string)shell_exec($cmd);
+    }
 
 
     /**
diff --git a/program/include/rcube_bc.inc b/program/include/rcube_bc.inc
index 1932f86e2..1894873e6 100644
--- a/program/include/rcube_bc.inc
+++ b/program/include/rcube_bc.inc
@@ -38,11 +38,6 @@ function get_table_name($table)
     return rcmail::get_instance()->db->table_name($table);
 }
 
-function get_sequence_name($sequence)
-{
-    return rcmail::get_instance()->db->sequence_name($sequence);
-}
-
 function rcube_label($p, $domain=null)
 {
     return rcmail::get_instance()->gettext($p, $domain);
diff --git a/program/include/rcube_browser.php b/program/include/rcube_browser.php
index 06033e036..7cfae709d 100644
--- a/program/include/rcube_browser.php
+++ b/program/include/rcube_browser.php
@@ -20,8 +20,6 @@
 */
 
 /**
- * rcube_browser
- *
  * Provide details about the client's browser based on the User-Agent header
  *
  * @package Core
diff --git a/program/include/rcube_charset.php b/program/include/rcube_charset.php
index 380d14978..1740a6096 100644
--- a/program/include/rcube_charset.php
+++ b/program/include/rcube_charset.php
@@ -181,6 +181,12 @@ class rcube_charset
         $to   = empty($to) ? strtoupper(RCMAIL_CHARSET) : self::parse_charset($to);
         $from = self::parse_charset($from);
 
+        // It is a common case when UTF-16 charset is used with US-ASCII content (#1488654)
+        // In that case we can just skip the conversion (use UTF-8)
+        if ($from == 'UTF-16' && !preg_match('/[^\x00-\x7F]/', $str)) {
+            $from = 'UTF-8';
+        }
+
         if ($from == $to || empty($str) || empty($from)) {
             return $str;
         }
diff --git a/program/include/rcube_config.php b/program/include/rcube_config.php
index e2997906c..41acc80dd 100644
--- a/program/include/rcube_config.php
+++ b/program/include/rcube_config.php
@@ -42,6 +42,7 @@ class rcube_config
         'default_folders'      => 'default_imap_folders',
         'mail_pagesize'        => 'pagesize',
         'addressbook_pagesize' => 'pagesize',
+        'reply_mode'           => 'top_posting',
     );
 
 
diff --git a/program/include/rcube_imap.php b/program/include/rcube_imap.php
index 5dd9c1250..66b5c4bd6 100644
--- a/program/include/rcube_imap.php
+++ b/program/include/rcube_imap.php
@@ -2222,6 +2222,10 @@ class rcube_imap extends rcube_storage
             $folder = $this->folder;
         }
 
+        if (!$this->check_connection()) {
+            return false;
+        }
+
         // make sure folder exists
         if ($this->folder_exists($folder)) {
             if ($is_file) {
diff --git a/program/include/rcube_imap_cache.php b/program/include/rcube_imap_cache.php
index a061a1f6e..f36ace0eb 100644
--- a/program/include/rcube_imap_cache.php
+++ b/program/include/rcube_imap_cache.php
@@ -5,7 +5,7 @@
  | program/include/rcube_imap_cache.php                                  |
  |                                                                       |
  | This file is part of the Roundcube Webmail client                     |
- | Copyright (C) 2005-2011, The Roundcube Dev Team                       |
+ | Copyright (C) 2005-2012, The Roundcube Dev Team                       |
  |                                                                       |
  | Licensed under the GNU General Public License version 3 or            |
  | any later version with exceptions for skins & plugins.                |
@@ -350,11 +350,11 @@ class rcube_imap_cache
     function get_message($mailbox, $uid, $update = true, $cache = true)
     {
         // Check internal cache
-        if ($this->icache['message']
-            && $this->icache['message']['mailbox'] == $mailbox
-            && $this->icache['message']['object']->uid == $uid
+        if ($this->icache['__message']
+            && $this->icache['__message']['mailbox'] == $mailbox
+            && $this->icache['__message']['object']->uid == $uid
         ) {
-            return $this->icache['message']['object'];
+            return $this->icache['__message']['object'];
         }
 
         $sql_result = $this->db->query(
@@ -386,7 +386,7 @@ class rcube_imap_cache
             // Save current message from internal cache
             $this->save_icache();
 
-            $this->icache['message'] = array(
+            $this->icache['__message'] = array(
                 'object'  => $message,
                 'mailbox' => $mailbox,
                 'exists'  => $found,
@@ -459,20 +459,28 @@ class rcube_imap_cache
      */
     function change_flag($mailbox, $uids, $flag, $enabled = false)
     {
+        if (empty($uids)) {
+            return;
+        }
+
         $flag = strtoupper($flag);
         $idx  = (int) array_search($flag, $this->flags);
+        $uids = (array) $uids;
 
         if (!$idx) {
             return;
         }
 
         // Internal cache update
-        if ($uids && count($uids) == 1 && ($uid = current($uids))
-            && ($message = $this->icache['message'])
-            && $message['mailbox'] == $mailbox && $message['object']->uid == $uid
+        if (($message = $this->icache['__message'])
+            && $message['mailbox'] === $mailbox
+            && in_array($message['object']->uid, $uids)
         ) {
             $message['object']->flags[$flag] = $enabled;
-            return;
+
+            if (count($uids) == 1) {
+                return;
+            }
         }
 
         $this->db->query(
@@ -481,7 +489,7 @@ class rcube_imap_cache
             .", flags = flags ".($enabled ? "+ $idx" : "- $idx")
             ." WHERE user_id = ?"
                 ." AND mailbox = ?"
-                .($uids !== null ? " AND uid IN (".$this->db->array2list((array)$uids, 'integer').")" : "")
+                .($uids !== null ? " AND uid IN (".$this->db->array2list($uids, 'integer').")" : "")
                 ." AND (flags & $idx) ".($enabled ? "= 0" : "= $idx"),
             $this->userid, $mailbox);
     }
@@ -503,10 +511,11 @@ class rcube_imap_cache
         }
         else {
             // Remove the message from internal cache
-            if (!empty($uids) && !is_array($uids) && ($message = $this->icache['message'])
-                && $message['mailbox'] == $mailbox && $message['object']->uid == $uids
+            if (!empty($uids) && ($message = $this->icache['__message'])
+                && $message['mailbox'] === $mailbox
+                && in_array($message['object']->uid, (array)$uids)
             ) {
-                $this->icache['message'] = null;
+                $this->icache['__message'] = null;
             }
 
             $this->db->query(
@@ -608,13 +617,13 @@ class rcube_imap_cache
         // get expiration timestamp
         $ts = get_offset_time($ttl, -1);
 
-        $this->db->query("DELETE FROM ".get_table_name('cache_messages')
+        $this->db->query("DELETE FROM ".$this->db->table_name('cache_messages')
               ." WHERE changed < " . $this->db->fromunixtime($ts));
 
-        $this->db->query("DELETE FROM ".get_table_name('cache_index')
+        $this->db->query("DELETE FROM ".$this->db->table_name('cache_index')
               ." WHERE changed < " . $this->db->fromunixtime($ts));
 
-        $this->db->query("DELETE FROM ".get_table_name('cache_thread')
+        $this->db->query("DELETE FROM ".$this->db->table_name('cache_thread')
               ." WHERE changed < " . $this->db->fromunixtime($ts));
     }
 
@@ -763,6 +772,11 @@ class rcube_imap_cache
         $object    = $index['object'];
         $is_thread = is_a($object, 'rcube_result_thread');
 
+        // sanity check
+        if (empty($object)) {
+            return false;
+        }
+
         // Get mailbox data (UIDVALIDITY, counters, etc.) for status check
         $mbox_data = $this->imap->folder_data($mailbox);
 
@@ -1078,7 +1092,7 @@ class rcube_imap_cache
     private function save_icache()
     {
         // Save current message from internal cache
-        if ($message = $this->icache['message']) {
+        if ($message = $this->icache['__message']) {
             // clean up some object's data
             $object = $this->message_object_prepare($message['object']);
 
@@ -1089,7 +1103,7 @@ class rcube_imap_cache
                 $this->add_message($message['mailbox'], $object, !$message['exists']);
             }
 
-            $this->icache['message']['md5sum'] = $md5sum;
+            $this->icache['__message']['md5sum'] = $md5sum;
         }
     }
 
diff --git a/program/include/rcube_imap_generic.php b/program/include/rcube_imap_generic.php
index 915a11aad..c3cfabc3a 100644
--- a/program/include/rcube_imap_generic.php
+++ b/program/include/rcube_imap_generic.php
@@ -2538,7 +2538,7 @@ class rcube_imap_generic
     {
         unset($this->data['APPENDUID']);
 
-        if (!$mailbox) {
+        if ($mailbox === null || $mailbox === '') {
             return false;
         }
 
@@ -2603,7 +2603,7 @@ class rcube_imap_generic
     {
         unset($this->data['APPENDUID']);
 
-        if (!$mailbox) {
+        if ($mailbox === null || $mailbox === '') {
             return false;
         }
 
@@ -2612,6 +2612,7 @@ class rcube_imap_generic
         if (file_exists(realpath($path))) {
             $in_fp = fopen($path, 'r');
         }
+
         if (!$in_fp) {
             $this->setError(self::ERROR_UNKNOWN, "Couldn't open $path for reading");
             return false;
diff --git a/program/include/rcube_ldap.php b/program/include/rcube_ldap.php
index dbab0fd06..ad2ccddeb 100644
--- a/program/include/rcube_ldap.php
+++ b/program/include/rcube_ldap.php
@@ -139,6 +139,11 @@ class rcube_ldap extends rcube_addressbook
                     unset($this->coltypes[$childcol]);  // remove address child col from global coltypes list
                 }
             }
+
+            // at least one address type must be specified
+            if (empty($this->coltypes['address']['subtypes'])) {
+                $this->coltypes['address']['subtypes'] = array('home');
+            }
         }
         else if ($this->coltypes['address']) {
             $this->coltypes['address'] += array('type' => 'textarea', 'childs' => null, 'size' => 40);
diff --git a/program/include/rcube_message.php b/program/include/rcube_message.php
index 9d36acf38..6af1d0133 100644
--- a/program/include/rcube_message.php
+++ b/program/include/rcube_message.php
@@ -50,13 +50,14 @@ class rcube_message
      */
     private $mime;
     private $opt = array();
-    private $inline_parts = array();
     private $parse_alternative = false;
 
-    public $uid = null;
+    public $uid;
+    public $folder;
     public $headers;
     public $parts = array();
     public $mime_parts = array();
+    public $inline_parts = array();
     public $attachments = array();
     public $subject = '';
     public $sender = null;
@@ -68,17 +69,22 @@ class rcube_message
      *
      * Provide a uid, and parse message structure.
      *
-     * @param string $uid The message UID.
+     * @param string $uid    The message UID.
+     * @param string $folder Folder name
      *
      * @see self::$app, self::$storage, self::$opt, self::$parts
      */
-    function __construct($uid)
+    function __construct($uid, $folder = null)
     {
         $this->uid  = $uid;
         $this->app  = rcube::get_instance();
         $this->storage = $this->app->get_storage();
+        $this->folder  = strlen($folder) ? $folder : $this->storage->get_folder();
         $this->storage->set_options(array('all_headers' => true));
 
+        // Set current folder
+        $this->storage->set_folder($this->folder);
+
         $this->headers = $this->storage->get_message($uid);
 
         if (!$this->headers)
@@ -179,10 +185,12 @@ class rcube_message
                 }
                 return $fp ? true : $part->body;
             }
+
             // get from IMAP
+            $this->storage->set_folder($this->folder);
+
             return $this->storage->get_message_part($this->uid, $mime_id, $part, NULL, $fp, $skip_charset_conv);
-        } else
-            return null;
+        }
     }
 
 
@@ -637,8 +645,10 @@ class rcube_message
     function tnef_decode(&$part)
     {
         // @TODO: attachment may be huge, hadle it via file
-        if (!isset($part->body))
+        if (!isset($part->body)) {
+            $this->storage->set_folder($this->folder);
             $part->body = $this->storage->get_message_part($this->uid, $part->mime_id, $part);
+        }
 
         $parts = array();
         $tnef = new tnef_decoder;
@@ -673,8 +683,10 @@ class rcube_message
     function uu_decode(&$part)
     {
         // @TODO: messages may be huge, hadle body via file
-        if (!isset($part->body))
+        if (!isset($part->body)) {
+            $this->storage->set_folder($this->folder);
             $part->body = $this->storage->get_message_part($this->uid, $part->mime_id, $part);
+        }
 
         $parts = array();
         // FIXME: line length is max.65?
diff --git a/program/include/rcube_mime.php b/program/include/rcube_mime.php
index e1f736a78..d8e04a97c 100644
--- a/program/include/rcube_mime.php
+++ b/program/include/rcube_mime.php
@@ -541,10 +541,10 @@ class rcube_mime
                     $prefix = $regs[0];
                     $level = strlen($prefix);
                     $line  = rtrim(substr($line, $level));
-                    $line  = $prefix . rc_wordwrap($line, $length - $level - 2, " \r\n$prefix ");
+                    $line  = $prefix . self::wordwrap($line, $length - $level - 2, " \r\n$prefix ");
                 }
                 else if ($line) {
-                    $line = rc_wordwrap(rtrim($line), $length - 2, " \r\n");
+                    $line = self::wordwrap(rtrim($line), $length - 2, " \r\n");
                     // space-stuffing
                     $line = preg_replace('/(^|\r\n)(From| |>)/', '\\1 \\2', $line);
                 }
diff --git a/program/include/rcube_output_html.php b/program/include/rcube_output_html.php
index 0a8f0e364..2743e7705 100644
--- a/program/include/rcube_output_html.php
+++ b/program/include/rcube_output_html.php
@@ -67,6 +67,11 @@ class rcube_output_html extends rcube_output
         $this->set_env('task', $task);
         $this->set_env('x_frame_options', $this->config->get('x_frame_options', 'sameorigin'));
 
+        // add cookie info
+        $this->set_env('cookie_domain', ini_get('session.cookie_domain'));
+        $this->set_env('cookie_path', ini_get('session.cookie_path'));
+        $this->set_env('cookie_secure', ini_get('session.cookie_secure'));
+
         // load the correct skin (in case user-defined)
         $skin = $this->config->get('skin');
         $this->set_skin($skin);
@@ -395,7 +400,7 @@ class rcube_output_html extends rcube_output
                 'line' => __LINE__,
                 'file' => __FILE__,
                 'message' => 'Error loading template for '.$realname
-                ), true, true);
+                ), true, $write);
             return false;
         }
 
@@ -693,6 +698,11 @@ class rcube_output_html extends rcube_output
                 }
                 break;
 
+            // frame
+            case 'frame':
+                return $this->frame($attrib);
+                break;
+
             // show a label
             case 'label':
                 if ($attrib['name'] || $attrib['command']) {
@@ -1270,6 +1280,30 @@ class rcube_output_html extends rcube_output
     }
 
 
+    /**
+     * Returns iframe object, registers some related env variables
+     *
+     * @param array $attrib HTML attributes
+     *
+     * @return string IFRAME element
+     */
+    public function frame($attrib)
+    {
+        if (!$attrib['id']) {
+            $attrib['id'] = 'rcmframe';
+        }
+
+        if (!$attrib['name']) {
+            $attrib['name'] = $attrib['id'];
+        }
+
+        $this->set_env('contentframe', $attrib['id']);
+        $this->set_env('blankpage', $attrib['src'] ? $this->abs_url($attrib['src']) : 'program/resources/blank.gif');
+
+        return html::iframe($attrib);
+    }
+
+
     /*  ************* common functions delivering gui objects **************  */
 
 
diff --git a/program/include/rcube_plugin.php b/program/include/rcube_plugin.php
index b1ec32a8a..c1035733b 100644
--- a/program/include/rcube_plugin.php
+++ b/program/include/rcube_plugin.php
@@ -336,7 +336,7 @@ abstract class rcube_plugin
   public function local_skin_path()
   {
     $rcmail = rcube::get_instance();
-    foreach (array($rcmail->config->get('skin'),'default') as $skin) {
+    foreach (array($rcmail->config->get('skin'), 'larry') as $skin) {
       $skin_path = 'skins/' . $skin;
       if (is_dir(realpath(slashify($this->home) . $skin_path)))
         break;
diff --git a/program/include/rcube_shared.inc b/program/include/rcube_shared.inc
index 85f278432..c15305c08 100644
--- a/program/include/rcube_shared.inc
+++ b/program/include/rcube_shared.inc
@@ -108,11 +108,11 @@ function slashify($str)
 
 
 /**
- * Remove slash at the end of the string
+ * Remove slashes at the end of the string
  */
 function unslashify($str)
 {
-  return preg_replace('/\/$/', '', $str);
+  return preg_replace('/\/+$/', '', $str);
 }
 
 
@@ -231,7 +231,7 @@ function array_keys_recursive($array)
 {
     $keys = array();
 
-    if (!empty($array)) {
+    if (!empty($array) && is_array($array)) {
         foreach ($array as $key => $child) {
             $keys[] = $key;
             foreach (array_keys_recursive($child) as $val) {
@@ -255,7 +255,7 @@ function asciiwords($str, $css_id = false, $replace_with = '')
 
 
 /**
- * Remove single and double quotes from given string
+ * Remove single and double quotes from a given string
  *
  * @param string Input value
  *
@@ -306,6 +306,29 @@ function format_email_recipient($email, $name = '')
 
 
 /**
+ * Format e-mail address
+ *
+ * @param string $email E-mail address
+ *
+ * @return string Formatted e-mail address
+ */
+function format_email($email)
+{
+    $email = trim($email);
+    $parts = explode('@', $email);
+    $count = count($parts);
+
+    if ($count > 1) {
+        $parts[$count-1] = mb_strtolower($parts[$count-1]);
+
+        $email = implode('@', $parts);
+    }
+
+    return $email;
+}
+
+
+/**
  * mbstring replacement functions
  */
 if (!extension_loaded('mbstring'))
@@ -399,7 +422,6 @@ function rcube_autoload($classname)
 {
     $filename = preg_replace(
         array(
-            '/MDB2_(.+)/',
             '/Mail_(.+)/',
             '/Net_(.+)/',
             '/Auth_(.+)/',
@@ -408,7 +430,6 @@ function rcube_autoload($classname)
         ),
         array(
             'Mail/\\1',
-            'Mail/\\1',
             'Net/\\1',
             'Auth/\\1',
             'html',
diff --git a/program/include/rcube_storage.php b/program/include/rcube_storage.php
index 768a26d73..f83e24041 100644
--- a/program/include/rcube_storage.php
+++ b/program/include/rcube_storage.php
@@ -195,7 +195,7 @@ abstract class rcube_storage
      */
     public function set_folder($folder)
     {
-        if ($this->folder == $folder) {
+        if ($this->folder === $folder) {
             return;
         }
 
diff --git a/program/include/rcube_utils.php b/program/include/rcube_utils.php
index d1a8315ec..23bf556e4 100644
--- a/program/include/rcube_utils.php
+++ b/program/include/rcube_utils.php
@@ -92,9 +92,9 @@ class rcube_utils
             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
+        // Validate domain part
+        if (preg_match('/^\[((IPv6:[0-9a-f:.]+)|([0-9.]+))\]$/i', $domain_part, $matches)) {
+            return self::check_ip(preg_replace('/^IPv6:/i', '', $matches[1])); // valid IPv4 or IPv6 address
         }
         else {
             // If not an IP address
@@ -110,6 +110,11 @@ class rcube_utils
                 }
             }
 
+            // last domain part
+            if (preg_match('/[^a-zA-Z]/', array_pop($domain_array))) {
+                return false;
+            }
+
             $rcube = rcube::get_instance();
 
             if (!$dns_check || !$rcube->config->get('email_dns_check')) {
@@ -141,6 +146,52 @@ class rcube_utils
         return false;
     }
 
+
+    /**
+     * Validates IPv4 or IPv6 address
+     *
+     * @param string $ip IP address in v4 or v6 format
+     *
+     * @return bool True if the address is valid
+     */
+    public static function check_ip($ip)
+    {
+        // IPv6, but there's no build-in IPv6 support
+        if (strpos($ip, ':') !== false && !defined('AF_INET6')) {
+            $parts = explode(':', $domain_part);
+            $count = count($parts);
+
+            if ($count > 8 || $count < 2) {
+                return false;
+            }
+
+            foreach ($parts as $idx => $part) {
+                $length = strlen($part);
+                if (!$length) {
+                    // there can be only one ::
+                    if ($found_empty) {
+                        return false;
+                    }
+                    $found_empty = true;
+                }
+                // last part can be an IPv4 address
+                else if ($idx == $count - 1) {
+                    if (!preg_match('/^[0-9a-f]{1,4}$/i', $part)) {
+                        return @inet_pton($part) !== false;
+                    }
+                }
+                else if (!preg_match('/^[0-9a-f]{1,4}$/i', $part)) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        return @inet_pton($ip) !== false;
+    }
+
+
     /**
      * Check whether the HTTP referer matches the current request
      *
@@ -149,8 +200,8 @@ class rcube_utils
     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'];
+        $referer = parse_url(self::request_header('Referer'));
+        return $referer['host'] == self::request_header('Host') && $referer['path'] == $uri['path'];
     }
 
 
diff --git a/program/include/rcube_vcard.php b/program/include/rcube_vcard.php
index 37cd3ab26..2bfd474c6 100644
--- a/program/include/rcube_vcard.php
+++ b/program/include/rcube_vcard.php
@@ -313,7 +313,7 @@ class rcube_vcard
 
       case 'birthday':
       case 'anniversary':
-        if (($val = rcube_strtotime($value)) && ($fn = self::$fieldmap[$field]))
+        if (($val = rcube_utils::strtotime($value)) && ($fn = self::$fieldmap[$field]))
           $this->raw[$fn][] = array(0 => date('Y-m-d', $val), 'value' => array('date'));
         break;