From 107bde9cfd9a0392d18544b5a433552ce6f2f0a6 Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Wed, 30 Aug 2006 13:41:21 -0400
Subject: [PATCH] Added MSSQL support

---
 program/include/main.inc | 1179 ++++++++++++++++++++++++++++++++++++++++++++++------------
 1 files changed, 925 insertions(+), 254 deletions(-)

diff --git a/program/include/main.inc b/program/include/main.inc
index 936cad3..7458fe1 100644
--- a/program/include/main.inc
+++ b/program/include/main.inc
@@ -20,6 +20,14 @@
 */
 
 require_once('lib/des.inc');
+require_once('lib/utf7.inc');
+require_once('lib/utf8.class.php');
+
+
+// define constannts for input reading
+define('RCUBE_INPUT_GET', 0x0101);
+define('RCUBE_INPUT_POST', 0x0102);
+define('RCUBE_INPUT_GPC', 0x0103);
 
 
 // register session and connect to server
@@ -34,7 +42,11 @@
   // load config file
   include_once('config/main.inc.php');
   $CONFIG = is_array($rcmail_config) ? $rcmail_config : array();
-  $CONFIG['skin_path'] = $CONFIG['skin_path'] ? preg_replace('/\/$/', '', $CONFIG['skin_path']) : 'skins/default';
+  
+  // load host-specific configuration
+  rcmail_load_host_config($CONFIG);
+  
+  $CONFIG['skin_path'] = $CONFIG['skin_path'] ? unslashify($CONFIG['skin_path']) : 'skins/default';
 
   // load db conf
   include_once('config/db.inc.php');
@@ -43,7 +55,7 @@
   if (empty($CONFIG['log_dir']))
     $CONFIG['log_dir'] = $INSTALL_PATH.'logs';
   else
-    $CONFIG['log_dir'] = ereg_replace('\/$', '', $CONFIG['log_dir']);
+    $CONFIG['log_dir'] = unslashify($CONFIG['log_dir']);
 
   // set PHP error logging according to config
   if ($CONFIG['debug_level'] & 1)
@@ -55,7 +67,8 @@
     ini_set('display_errors', 1);
   else
     ini_set('display_errors', 0);
-  
+
+
   // set session garbage collecting time according to session_lifetime
   if (!empty($CONFIG['session_lifetime']))
     ini_set('session.gc_maxlifetime', ($CONFIG['session_lifetime']+2)*60);
@@ -64,32 +77,28 @@
   // prepare DB connection
   require_once('include/rcube_'.(empty($CONFIG['db_backend']) ? 'db' : $CONFIG['db_backend']).'.inc');
   
-  $DB = new rcube_db($CONFIG['db_dsnw'], $CONFIG['db_dsnr']);
+  $DB = new rcube_db($CONFIG['db_dsnw'], $CONFIG['db_dsnr'], $CONFIG['db_persistent']);
   $DB->sqlite_initials = $INSTALL_PATH.'SQL/sqlite.initial.sql';
-
+  $DB->db_connect('w');
+    
   // we can use the database for storing session data
-  // session queries do not work with MDB2
-  if ($CONFIG['db_backend']!='mdb2' && is_object($DB) && $DB->db_provider!='sqlite')
+  if (!$DB->is_error())
     include_once('include/session.inc');
-
 
   // init session
   session_start();
   $sess_id = session_id();
-  
+
   // create session and set session vars
-  if (!$_SESSION['client_id'])
+  if (!isset($_SESSION['auth_time']))
     {
-    $_SESSION['client_id'] = $sess_id;
-    $_SESSION['user_lang'] = substr($CONFIG['locale_string'], 0, 2);
+    $_SESSION['user_lang'] = rcube_language_prop($CONFIG['locale_string']);
     $_SESSION['auth_time'] = mktime();
-    $_SESSION['auth'] = rcmail_auth_hash($sess_id, $_SESSION['auth_time']);
-    unset($GLOBALS['_auth']);
+    setcookie('sessauth', rcmail_auth_hash($sess_id, $_SESSION['auth_time']));
     }
 
   // set session vars global
-  $sess_auth = $_SESSION['auth'];
-  $sess_user_lang = $_SESSION['user_lang'];
+  $sess_user_lang = rcube_language_prop($_SESSION['user_lang']);
 
 
   // overwrite config with user preferences
@@ -103,7 +112,6 @@
 
   // set current task to session
   $_SESSION['task'] = $task;
-
 
   // create IMAP object
   if ($task=='mail')
@@ -119,7 +127,25 @@
 
   register_shutdown_function('rcmail_shutdown');
   }
+
+
+// load a host-specific config file if configured
+function rcmail_load_host_config(&$config)
+  {
+  $fname = NULL;
   
+  if (is_array($config['include_host_config']))
+    $fname = $config['include_host_config'][$_SERVER['HTTP_HOST']];
+  else if (!empty($config['include_host_config']))
+    $fname = preg_replace('/[^a-z0-9\.\-_]/i', '', $_SERVER['HTTP_HOST']) . '.inc.php';
+
+   if ($fname && is_file('config/'.$fname))
+     {
+     include('config/'.$fname);
+     $config = array_merge($config, $rcmail_config);
+     }
+  }
+
 
 // create authorization hash
 function rcmail_auth_hash($sess_id, $ts)
@@ -139,13 +165,32 @@
   }
 
 
+// compare the auth hash sent by the client with the local session credentials
+function rcmail_authenticate_session()
+  {
+  $now = mktime();
+  $valid = ($_COOKIE['sessauth'] == rcmail_auth_hash(session_id(), $_SESSION['auth_time']));
+
+  // renew auth cookie every 5 minutes (only for GET requests)
+  if (!$valid || ($_SERVER['REQUEST_METHOD']!='POST' && $now-$_SESSION['auth_time'] > 300))
+    {
+    $_SESSION['auth_time'] = $now;
+    setcookie('sessauth', rcmail_auth_hash(session_id(), $now));
+    }
+    
+  return $valid;
+  }
+
 
 // create IMAP object and connect to server
 function rcmail_imap_init($connect=FALSE)
   {
-  global $CONFIG, $IMAP;
+  global $CONFIG, $DB, $IMAP;
 
-  $IMAP = new rcube_imap();
+  $IMAP = new rcube_imap($DB);
+  $IMAP->debug_level = $CONFIG['debug_level'];
+  $IMAP->skip_deleted = $CONFIG['skip_deleted'];
+
 
   // connect with stored session data
   if ($connect)
@@ -160,9 +205,6 @@
   if ($CONFIG['enable_caching']===TRUE)
     $IMAP->set_caching(TRUE);
 
-  if (is_array($CONFIG['default_imap_folders']))
-    $IMAP->set_default_mailboxes($CONFIG['default_imap_folders']);
-
   // set pagesize from config
   if (isset($CONFIG['pagesize']))
     $IMAP->set_pagesize($CONFIG['pagesize']);
@@ -176,12 +218,14 @@
   global $CONFIG, $IMAP;
 
   // set root dir from config
-  if (strlen($CONFIG['imap_root']))
+  if (!empty($CONFIG['imap_root']))
     $IMAP->set_rootdir($CONFIG['imap_root']);
 
-  if (strlen($_SESSION['mbox']))
+  if (is_array($CONFIG['default_imap_folders']))
+    $IMAP->set_default_mailboxes($CONFIG['default_imap_folders']);
+
+  if (!empty($_SESSION['mbox']))
     $IMAP->set_mailbox($_SESSION['mbox']);
-    
   if (isset($_SESSION['page']))
     $IMAP->set_page($_SESSION['page']);
   }
@@ -197,16 +241,28 @@
     $IMAP->close();
     $IMAP->write_cache();
     }
+    
+  // before closing the database connection, write session data
+  session_write_close();
   }
 
 
 // destroy session data and remove cookie
 function rcmail_kill_session()
   {
-/* $sess_name = session_name();
-  if (isset($_COOKIE[$sess_name]))
-   setcookie($sess_name, '', time()-42000, '/');
-*/
+  // save user preferences
+  $a_user_prefs = $_SESSION['user_prefs'];
+  if (!is_array($a_user_prefs))
+    $a_user_prefs = array();
+    
+  if ((isset($_SESSION['sort_col']) && $_SESSION['sort_col']!=$a_user_prefs['message_sort_col']) ||
+      (isset($_SESSION['sort_order']) && $_SESSION['sort_order']!=$a_user_prefs['message_sort_order']))
+    {
+    $a_user_prefs['message_sort_col'] = $_SESSION['sort_col'];
+    $a_user_prefs['message_sort_order'] = $_SESSION['sort_order'];
+    rcmail_save_user_prefs($a_user_prefs);
+    }
+
   $_SESSION = array();
   session_destroy();
   }
@@ -227,6 +283,58 @@
   }
 
 
+// return correct name for a specific database sequence
+// (used for Postres only)
+function get_sequence_name($sequence)
+  {
+  global $CONFIG;
+  
+  // return table name if configured
+  $config_key = 'db_sequence_'.$sequence;
+
+  if (strlen($CONFIG[$config_key]))
+    return $CONFIG[$config_key];
+  
+  return $table;
+  }
+
+
+// check the given string and returns language properties
+function rcube_language_prop($lang, $prop='lang')
+  {
+  global $INSTALL_PATH;
+  static $rcube_languages, $rcube_language_aliases, $rcube_charsets;
+
+  if (empty($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
+  if (!isset($rcube_languages[$lang]) && strlen($lang)>2)
+    {
+    $lang = substr($lang, 0, 2);
+    $lang = rcube_language_prop($lang);
+    }
+
+  if (!isset($rcube_languages[$lang]))
+    $lang = 'en_US';
+
+  // language has special charset configured
+  if (isset($rcube_charsets[$lang]))
+    $charset = $rcube_charsets[$lang];
+  else
+    $charset = 'UTF-8';    
+
+
+  if ($prop=='charset')
+    return $charset;
+  else
+    return $lang;
+  }
+  
 
 // init output object for GUI and add common scripts
 function load_gui()
@@ -240,43 +348,45 @@
   $javascript = "var $JS_OBJECT_NAME = new rcube_webmail();\n";
   $javascript .= "$JS_OBJECT_NAME.set_env('comm_path', '$COMM_PATH');\n";
 
+  if (isset($CONFIG['javascript_config'] )){
+    foreach ($CONFIG['javascript_config'] as $js_config_var){
+      $javascript .= "$JS_OBJECT_NAME.set_env('$js_config_var', '" . $CONFIG[$js_config_var] . "');\n";
+    }
+  }
+  
   if (!empty($GLOBALS['_framed']))
     $javascript .= "$JS_OBJECT_NAME.set_env('framed', true);\n";
     
   $OUTPUT->add_script($javascript);
-  $OUTPUT->include_script('program/js/common.js');
-  $OUTPUT->include_script('program/js/app.js');
+  $OUTPUT->include_script('common.js');
+  $OUTPUT->include_script('app.js');
+  $OUTPUT->scripts_path = 'program/js/';
+
+  // set locale setting
+  rcmail_set_locale($sess_user_lang);
 
   // set user-selected charset
-  if ($CONFIG['charset'])
+  if (!empty($CONFIG['charset']))
     $OUTPUT->set_charset($CONFIG['charset']);
-  else
-    rcmail_set_locale($sess_user_lang);
-  
+
   // add some basic label to client
-  rcube_add_label('loading');
-  }  
+  rcube_add_label('loading','checkingmail');
+  }
 
 
 // set localization charset based on the given language
 function rcmail_set_locale($lang)
   {
-  global $OUTPUT, $INSTLL_PATH, $CHARSET;
-  static $rcube_charsets;
-
-  if (!$rcube_charsets)
-    @include($INSTLL_PATH.'program/localization/index.inc');
-
-  if (isset($rcube_charsets[$lang]))
-    {
-    $OUTPUT->set_charset($rcube_charsets[$lang]);
-    $CHARSET = $rcube_charsets[$lang];
-    }
+  global $OUTPUT, $MBSTRING;
+  static $s_mbstring_loaded = NULL;
+  
+  // settings for mbstring module (by Tadashi Jokagi)
+  if (is_null($s_mbstring_loaded))
+    $MBSTRING = $s_mbstring_loaded = extension_loaded("mbstring");
   else
-    {
-    $OUTPUT->set_charset('ISO-8859-1');
-    $CHARSET = 'ISO-8859-1';
-    }
+    $MBSTRING = $s_mbstring_loaded = FALSE;
+
+  $OUTPUT->set_charset(rcube_language_prop($lang, 'charset'));
   }
 
 
@@ -297,6 +407,22 @@
     $imap_ssl = (isset($a_host['scheme']) && in_array($a_host['scheme'], array('ssl','imaps','tls'))) ? TRUE : FALSE;
     $imap_port = isset($a_host['port']) ? $a_host['port'] : ($imap_ssl ? 993 : $CONFIG['default_port']);
     }
+  else
+    $imap_port = $CONFIG['default_port'];
+
+
+  /* Modify username with domain if required  
+     Inspired by Marco <P0L0_notspam_binware.org>
+  */
+  // Check if we need to add domain
+  if (!empty($CONFIG['username_domain']) && !strstr($user, '@'))
+    {
+    if (is_array($CONFIG['username_domain']) && isset($CONFIG['username_domain'][$host]))
+      $user .= '@'.$CONFIG['username_domain'][$host];
+    else if (is_string($CONFIG['username_domain']))
+      $user .= '@'.$CONFIG['username_domain'];
+    }
+
 
   // query if user already registered
   $sql_result = $DB->query("SELECT user_id, username, language, preferences
@@ -312,6 +438,11 @@
     $user_id = $sql_arr['user_id'];
     $user = $sql_arr['username'];
     }
+
+  // try to resolve email address from virtuser table    
+  if (!empty($CONFIG['virtuser_file']) && strstr($user, '@'))
+    $user = rcmail_email2user($user);
+
 
   // exit if IMAP login failed
   if (!($imap_login  = $IMAP->connect($host, $user, $pass, $imap_port, $imap_ssl)))
@@ -335,7 +466,7 @@
       
     // update user's record
     $DB->query("UPDATE ".get_table_name('users')."
-                SET    last_login=now()
+                SET    last_login=".$DB->now()."
                 WHERE  user_id=?",
                 $user_id);
     }
@@ -355,8 +486,10 @@
     $_SESSION['user_lang'] = $sess_user_lang;
     $_SESSION['password']  = encrypt_passwd($pass);
 
-    // force reloading complete list of subscribed mailboxes    
+    // force reloading complete list of subscribed mailboxes
+    rcmail_set_imap_prop();
     $IMAP->clear_cache('mailboxes');
+    $IMAP->create_default_folders();
 
     return TRUE;
     }
@@ -369,37 +502,56 @@
 function rcmail_create_user($user, $host)
   {
   global $DB, $CONFIG, $IMAP;
-  
+
+  $user_email = '';
+
+  // try to resolve user in virtusertable
+  if (!empty($CONFIG['virtuser_file']) && strstr($user, '@')==FALSE)
+    $user_email = rcmail_user2email($user);
+
   $DB->query("INSERT INTO ".get_table_name('users')."
-              (created, last_login, username, mail_host, language)
-              VALUES (now(), now(), ?, ?, ?)",
+              (created, last_login, username, mail_host, alias, language)
+              VALUES (".$DB->now().", ".$DB->now().", ?, ?, ?, ?)",
               $user,
               $host,
+              $user_email,
 		      $_SESSION['user_lang']);
 
-  if ($user_id = $DB->insert_id('user_ids'))
+  if ($user_id = $DB->insert_id(get_sequence_name('users')))
     {
-    $user_email = strstr($user, '@') ? $user : sprintf('%s@%s', $user, $host);
+    $mail_domain = $host;
+    if (is_array($CONFIG['mail_domain']))
+      {
+      if (isset($CONFIG['mail_domain'][$host]))
+        $mail_domain = $CONFIG['mail_domain'][$host];
+      }
+    else if (!empty($CONFIG['mail_domain']))
+      $mail_domain = $CONFIG['mail_domain'];
+   
+    if ($user_email=='')
+      $user_email = strstr($user, '@') ? $user : sprintf('%s@%s', $user, $mail_domain);
+
     $user_name = $user!=$user_email ? $user : '';
-    
-    // also create a new identity record
+
+    // try to resolve the e-mail address from the virtuser table
+	if (!empty($CONFIG['virtuser_query']))
+	  {
+      $sql_result = $DB->query(preg_replace('/%u/', $user, $CONFIG['virtuser_query']));
+      if ($sql_arr = $DB->fetch_array($sql_result))
+        $user_email = $sql_arr[0];
+      }
+
+    // also create new identity records
     $DB->query("INSERT INTO ".get_table_name('identities')."
-                (user_id, `default`, name, email)
-                VALUES (?, '1', ?, ?)",
+                (user_id, del, standard, name, email)
+                VALUES (?, 0, 1, ?, ?)",
                 $user_id,
                 $user_name,
                 $user_email);
+
                        
     // get existing mailboxes
     $a_mailboxes = $IMAP->list_mailboxes();
-    
-    // check if the configured mailbox for sent messages exists
-    if ($CONFIG['sent_mbox'] && !in_array_nocase($CONFIG['sent_mbox'], $a_mailboxes))
-      $IMAP->create_mailbox($CONFIG['sent_mbox'], TRUE);
-
-    // check if the configured mailbox for sent messages exists
-    if ($CONFIG['trash_mbox'] && !in_array_nocase($CONFIG['trash_mbox'], $a_mailboxes))
-      $IMAP->create_mailbox($CONFIG['trash_mbox'], TRUE);
     }
   else
     {
@@ -414,6 +566,107 @@
   }
 
 
+// load virtuser table in array
+function rcmail_getvirtualfile()
+  {
+  global $CONFIG;
+  if (empty($CONFIG['virtuser_file']) || !is_file($CONFIG['virtuser_file']))
+    return FALSE;
+  
+  // read file 
+  $a_lines = file($CONFIG['virtuser_file']);
+  return $a_lines;
+  }
+
+
+// find matches of the given pattern in virtuser table
+function rcmail_findinvirtual($pattern)
+  {
+  $result = array();
+  $virtual = rcmail_getvirtualfile();
+  if ($virtual==FALSE)
+    return $result;
+
+  // check each line for matches
+  foreach ($virtual as $line)
+    {
+    $line = trim($line);
+    if (empty($line) || $line{0}=='#')
+      continue;
+      
+    if (eregi($pattern, $line))
+      $result[] = $line;
+    }
+
+  return $result;
+  }
+
+
+// resolve username with virtuser table
+function rcmail_email2user($email)
+  {
+  $user = $email;
+  $r = rcmail_findinvirtual("^$email");
+
+  for ($i=0; $i<count($r); $i++)
+    {
+    $data = $r[$i];
+    $arr = preg_split('/\s+/', $data);
+    if(count($arr)>0)
+      {
+      $user = trim($arr[count($arr)-1]);
+      break;
+      }
+    }
+
+  return $user;
+  }
+
+
+// resolve e-mail address with virtuser table
+function rcmail_user2email($user)
+  {
+  $email = "";
+  $r = rcmail_findinvirtual("$user$");
+
+  for ($i=0; $i<count($r); $i++)
+    {
+    $data=$r[$i];
+    $arr = preg_split('/\s+/', $data);
+    if (count($arr)>0)
+      {
+      $email = trim($arr[0]);
+      break;
+      }
+    }
+
+  return $email;
+  } 
+
+
+function rcmail_save_user_prefs($a_user_prefs)
+  {
+  global $DB, $CONFIG, $sess_user_lang;
+  
+  $DB->query("UPDATE ".get_table_name('users')."
+              SET    preferences=?,
+                     language=?
+              WHERE  user_id=?",
+              serialize($a_user_prefs),
+              $sess_user_lang,
+              $_SESSION['user_id']);
+
+  if ($DB->affected_rows())
+    {
+    $_SESSION['user_prefs'] = $a_user_prefs;  
+    $CONFIG = array_merge($CONFIG, $a_user_prefs);
+    return TRUE;
+    }
+    
+  return FALSE;
+  }
+
+
 // overwrite action variable  
 function rcmail_overwrite_action($action)
   {
@@ -424,63 +677,91 @@
   }
 
 
-function show_message($message, $type='notice')
+function show_message($message, $type='notice', $vars=NULL)
   {
   global $OUTPUT, $JS_OBJECT_NAME, $REMOTE_REQUEST;
-
+  
   $framed = $GLOBALS['_framed'];
   $command = sprintf("display_message('%s', '%s');",
-                     addslashes(rep_specialchars_output(rcube_label($message))),
+                     rep_specialchars_output(rcube_label(array('name' => $message, 'vars' => $vars)), 'js'),
                      $type);
                      
   if ($REMOTE_REQUEST)
     return 'this.'.$command;
   
   else
-    $OUTPUT->add_script(sprintf("%s%s.%s",
+    $OUTPUT->add_script(sprintf("%s%s.%s\n",
                                 $framed ? sprintf('if(parent.%s)parent.', $JS_OBJECT_NAME) : '',
                                 $JS_OBJECT_NAME,
                                 $command));
-  
-  // console(rcube_label($message));
   }
 
 
-function console($msg, $type=1)
-  {
-  if ($GLOBALS['REMOTE_REQUEST'])
-    print "// $msg\n";
-  else
-    {
-    print $msg;
-    print "\n<hr>\n";
-    }
-  }
-
-
+// encrypt IMAP password using DES encryption
 function encrypt_passwd($pass)
   {
-  $cypher = des('rcmail?24BitPwDkeyF**ECB', $pass, 1, 0, NULL);
+  $cypher = des(get_des_key(), $pass, 1, 0, NULL);
   return base64_encode($cypher);
   }
 
 
+// decrypt IMAP password using DES encryption
 function decrypt_passwd($cypher)
   {
-  $pass = des('rcmail?24BitPwDkeyF**ECB', base64_decode($cypher), 0, 0, NULL);
-  return trim($pass);
+  $pass = des(get_des_key(), base64_decode($cypher), 0, 0, NULL);
+  return preg_replace('/\x00/', '', $pass);
+  }
+
+
+// return a 24 byte key for the DES encryption
+function get_des_key()
+  {
+  $key = !empty($GLOBALS['CONFIG']['des_key']) ? $GLOBALS['CONFIG']['des_key'] : 'rcmail?24BitPwDkeyF**ECB';
+  $len = strlen($key);
+  
+  // make sure the key is exactly 24 chars long
+  if ($len<24)
+    $key .= str_repeat('_', 24-$len);
+  else if ($len>24)
+    substr($key, 0, 24);
+  
+  return $key;
   }
 
 
 // send correct response on a remote request
-function rcube_remote_response($js_code)
+function rcube_remote_response($js_code, $flush=FALSE)
   {
-  send_nocacheing_headers();
-  //header('Content-Type: text/javascript');
-  header('Content-Type: application/x-javascript');
+  global $OUTPUT, $CHARSET;
+  static $s_header_sent = FALSE;
+  
+  if (!$s_header_sent)
+    {
+    $s_header_sent = TRUE;
+    send_nocacheing_headers();
+    header('Content-Type: application/x-javascript; charset='.$CHARSET);
+    print '/** remote response ['.date('d/M/Y h:i:s O')."] **/\n";
+    }
 
-  print '/** remote response ['.date('d/M/Y h:i:s O')."] **/\n";
-  print $js_code;
+  // send response code
+  print rcube_charset_convert($js_code, $CHARSET, $OUTPUT->get_charset());
+
+  if ($flush)  // flush the output buffer
+    flush();
+  else         // terminate script
+    exit;
+  }
+
+
+// send correctly formatted response for a request posted to an iframe
+function rcube_iframe_response($js_code='')
+  {
+  global $OUTPUT, $JS_OBJECT_NAME;
+
+  if (!empty($js_code))
+    $OUTPUT->add_script("if(parent.$JS_OBJECT_NAME){\n" . $js_code . "\n}");
+
+  $OUTPUT->write();
   exit;
   }
 
@@ -493,13 +774,13 @@
 
   if (!sizeof($sa_languages))
     {
-    @include($INSTLL_PATH.'program/localization/index.inc');
+    @include($INSTALL_PATH.'program/localization/index.inc');
 
-    if ($dh = @opendir($INSTLL_PATH.'program/localization'))
+    if ($dh = @opendir($INSTALL_PATH.'program/localization'))
       {
       while (($name = readdir($dh)) !== false)
         {
-        if ($name{0}=='.' || !is_dir($INSTLL_PATH.'program/localization/'.$name))
+        if ($name{0}=='.' || !is_dir($INSTALL_PATH.'program/localization/'.$name))
           continue;
 
         if ($label = $rcube_languages[$name])
@@ -508,7 +789,6 @@
       closedir($dh);
       }
     }
-
   return $sa_languages;
   }
 
@@ -525,6 +805,234 @@
                                 $name,
                                 rep_specialchars_output(rcube_label($name), 'js')));  
   }
+
+
+// remove temp files of a session
+function rcmail_clear_session_temp($sess_id)
+  {
+  global $CONFIG;
+
+  $temp_dir = slashify($CONFIG['temp_dir']);
+  $cache_dir = $temp_dir.$sess_id;
+
+  if (is_dir($cache_dir))
+    {
+    clear_directory($cache_dir);
+    rmdir($cache_dir);
+    }  
+  }
+
+
+// remove all expired message cache records
+function rcmail_message_cache_gc()
+  {
+  global $DB, $CONFIG;
+  
+  // no cache lifetime configured
+  if (empty($CONFIG['message_cache_lifetime']))
+    return;
+  
+  // get target timestamp
+  $ts = get_offset_time($CONFIG['message_cache_lifetime'], -1);
+  
+  $DB->query("DELETE FROM ".get_table_name('messages')."
+             WHERE  created < ".$DB->fromunixtime($ts));
+  }
+
+
+// convert a string from one charset to another
+// this function is not complete and not tested well
+function rcube_charset_convert($str, $from, $to=NULL)
+  {
+  global $MBSTRING;
+
+  $from = strtoupper($from);
+  $to = $to==NULL ? strtoupper($GLOBALS['CHARSET']) : strtoupper($to);
+
+  if ($from==$to || $str=='')
+    return $str;
+
+  // convert charset using mbstring module  
+  if ($MBSTRING)
+    {
+    $to = $to=="UTF-7" ? "UTF7-IMAP" : $to;
+    $from = $from=="UTF-7" ? "UTF7-IMAP": $from;
+
+    // return if convert succeeded
+    if (($out = mb_convert_encoding($str, $to, $from)) != '')
+      return $out;
+    }
+
+  // convert charset using iconv module  
+  if (function_exists('iconv') && $from!='UTF-7' && $to!='UTF-7')
+    return iconv($from, $to, $str);
+
+  $conv = new utf8();
+
+  // convert string to UTF-8
+  if ($from=='UTF-7')
+    $str = rcube_charset_convert(UTF7DecodeString($str), 'ISO-8859-1');
+  else if (($from=='ISO-8859-1') && function_exists('utf8_encode'))
+    $str = utf8_encode($str);
+  else if ($from!='UTF-8')
+    {
+    $conv->loadCharset($from);
+    $str = $conv->strToUtf8($str);
+    }
+
+  // encode string for output
+  if ($to=='UTF-7')
+    return UTF7EncodeString(rcube_charset_convert($str, 'UTF-8', 'ISO-8859-1'));
+  else if ($to=='ISO-8859-1' && function_exists('utf8_decode'))
+    return utf8_decode($str);
+  else if ($to!='UTF-8')
+    {
+    $conv->loadCharset($to);
+    return $conv->utf8ToStr($str);
+    }
+
+  // return UTF-8 string
+  return $str;
+  }
+
+
+
+// replace specials characters to a specific encoding type
+function rep_specialchars_output($str, $enctype='', $mode='', $newlines=TRUE)
+  {
+  global $OUTPUT_TYPE, $OUTPUT;
+  static $html_encode_arr, $js_rep_table, $rtf_rep_table, $xml_rep_table;
+
+  if (!$enctype)
+    $enctype = $GLOBALS['OUTPUT_TYPE'];
+
+  // convert nbsps back to normal spaces if not html
+  if ($enctype!='html')
+    $str = str_replace(chr(160), ' ', $str);
+
+  // encode for plaintext
+  if ($enctype=='text')
+    return str_replace("\r\n", "\n", $mode=='remove' ? strip_tags($str) : $str);
+
+  // encode for HTML output
+  if ($enctype=='html')
+    {
+    if (!$html_encode_arr)
+      {
+      $html_encode_arr = get_html_translation_table(HTML_SPECIALCHARS);        
+      unset($html_encode_arr['?']);
+      unset($html_encode_arr['&']);
+      }
+
+    $ltpos = strpos($str, '<');
+    $encode_arr = $html_encode_arr;
+
+    // don't replace quotes and html tags
+    if (($mode=='show' || $mode=='') && $ltpos!==false && strpos($str, '>', $ltpos)!==false)
+      {
+      unset($encode_arr['"']);
+      unset($encode_arr['<']);
+      unset($encode_arr['>']);
+      }
+    else if ($mode=='remove')
+      $str = strip_tags($str);
+      
+    $out = strtr($str, $encode_arr);
+      
+    return $newlines ? nl2br($out) : $out;
+    }
+
+
+  if ($enctype=='url')
+    return rawurlencode($str);
+
+
+  // if the replace tables for RTF, XML and JS are not yet defined
+  if (!$js_rep_table)
+    {
+    $js_rep_table = $rtf_rep_table = $xml_rep_table = array();
+    $xml_rep_table['&'] = '&amp;';
+
+    for ($c=160; $c<256; $c++)  // can be increased to support more charsets
+      {
+      $hex = dechex($c);
+      $rtf_rep_table[Chr($c)] = "\\'$hex";
+      $xml_rep_table[Chr($c)] = "&#$c;";
+      
+      if ($OUTPUT->get_charset()=='ISO-8859-1')
+        $js_rep_table[Chr($c)] = sprintf("\u%s%s", str_repeat('0', 4-strlen($hex)), $hex);
+      }
+
+    $js_rep_table['"'] = sprintf("\u%s%s", str_repeat('0', 4-strlen(dechex(34))), dechex(34));
+    $xml_rep_table['"'] = '&quot;';
+    }
+
+  // encode for RTF
+  if ($enctype=='xml')
+    return strtr($str, $xml_rep_table);
+
+  // encode for javascript use
+  if ($enctype=='js')
+    {
+    if ($OUTPUT->get_charset()!='UTF-8')
+      $str = rcube_charset_convert($str, $GLOBALS['CHARSET'], $OUTPUT->get_charset());
+      
+    return addslashes(preg_replace(array("/\r\n/", "/\r/"), array('\n', '\n'), strtr($str, $js_rep_table)));
+    }
+
+  // encode for RTF
+  if ($enctype=='rtf')
+    return preg_replace("/\r\n/", "\par ", strtr($str, $rtf_rep_table));
+
+  // no encoding given -> return original string
+  return $str;
+  }
+
+
+/**
+ * Read input value and convert it for internal use
+ * Performs stripslashes() and charset conversion if necessary
+ * 
+ * @param  string   Field name to read
+ * @param  int      Source to get value from (GPC)
+ * @param  boolean  Allow HTML tags in field value
+ * @param  string   Charset to convert into
+ * @return string   Field value or NULL if not available
+ */
+function get_input_value($fname, $source, $allow_html=FALSE, $charset=NULL)
+  {
+  global $OUTPUT;
+  $value = NULL;
+  
+  if ($source==RCUBE_INPUT_GET && isset($_GET[$fname]))
+    $value = $_GET[$fname];
+  else if ($source==RCUBE_INPUT_POST && isset($_POST[$fname]))
+    $value = $_POST[$fname];
+  else if ($source==RCUBE_INPUT_GPC)
+    {
+    if (isset($_POST[$fname]))
+      $value = $_POST[$fname];
+    else if (isset($_GET[$fname]))
+      $value = $_GET[$fname];
+    else if (isset($_COOKIE[$fname]))
+      $value = $_COOKIE[$fname];
+    }
+  
+  // strip slashes if magic_quotes enabled
+  if ((bool)get_magic_quotes_gpc())
+    $value = stripslashes($value);
+
+  // remove HTML tags if not allowed    
+  if (!$allow_html)
+    $value = strip_tags($value);
+  
+  // convert to internal charset
+  if (is_object($OUTPUT))
+    return rcube_charset_convert($value, $OUTPUT->get_charset(), $charset);
+  else
+    return $value;
+  }
+
 
 
 
@@ -597,21 +1105,12 @@
   }
 
 
-function rcube_xml_command($command, $str_attrib, $a_attrib=NULL)
+function rcube_xml_command($command, $str_attrib, $add_attrib=array())
   {
-  global $IMAP, $CONFIG;
+  global $IMAP, $CONFIG, $OUTPUT;
   
-  $attrib = array();
   $command = strtolower($command);
-
-  preg_match_all('/\s*([-_a-z]+)=["]([^"]+)["]?/i', stripslashes($str_attrib), $regs, PREG_SET_ORDER);
-
-  // convert attributes to an associative array (name => value)
-  if ($regs)
-    foreach ($regs as $attr)
-      $attrib[strtolower($attr[1])] = $attr[2];
-  else if ($a_attrib)
-    $attrib = $a_attrib;
+  $attrib = parse_attrib_string($str_attrib) + $add_attrib;
 
   // execute command
   switch ($command)
@@ -650,120 +1149,87 @@
     case 'object':
       $object = strtolower($attrib['name']);
 
-      if ($object=='loginform')
-        return rcmail_login_form($attrib);
-
-      else if ($object=='message')
-        return rcmail_message_container($attrib);
-
-      // MAIL
-      else if ($object=='mailboxlist' && function_exists('rcmail_mailbox_list'))
-        return rcmail_mailbox_list($attrib);
+      $object_handlers = array(
+        // GENERAL
+        'loginform' => 'rcmail_login_form',
+        'username'  => 'rcmail_current_username',
         
-      else if ($object=='messages' && function_exists('rcmail_message_list'))
-        return rcmail_message_list($attrib);
-
-      else if ($object=='messagecountdisplay' && function_exists('rcmail_messagecount_display'))
-        return rcmail_messagecount_display($attrib);
-
-      else if ($object=='messageheaders' && function_exists('rcmail_message_headers'))
-        return rcmail_message_headers($attrib);
-
-      else if ($object=='messageattachments' && function_exists('rcmail_message_attachments'))
-        return rcmail_message_attachments($attrib);
-
-      else if ($object=='messagebody' && function_exists('rcmail_message_body'))
-        return rcmail_message_body($attrib);
+        // MAIL
+        'mailboxlist' => 'rcmail_mailbox_list',
+        'message' => 'rcmail_message_container',
+        'messages' => 'rcmail_message_list',
+        'messagecountdisplay' => 'rcmail_messagecount_display',
+        'quotadisplay' => 'rcmail_quota_display',
+        'messageheaders' => 'rcmail_message_headers',
+        'messagebody' => 'rcmail_message_body',
+        'messageattachments' => 'rcmail_message_attachments',
+        'blockedobjects' => 'rcmail_remote_objects_msg',
+        'messagecontentframe' => 'rcmail_messagecontent_frame',
+        'messagepartframe' => 'rcmail_message_part_frame',
+        'messagepartcontrols' => 'rcmail_message_part_controls',
+        'composeheaders' => 'rcmail_compose_headers',
+        'composesubject' => 'rcmail_compose_subject',
+        'composebody' => 'rcmail_compose_body',
+        'composeattachmentlist' => 'rcmail_compose_attachment_list',
+        'composeattachmentform' => 'rcmail_compose_attachment_form',
+        'composeattachment' => 'rcmail_compose_attachment_field',
+        'priorityselector' => 'rcmail_priority_selector',
+        'charsetselector' => 'rcmail_charset_selector',
+        'searchform' => 'rcmail_search_form',
+        'receiptcheckbox' => 'rcmail_receipt_checkbox',
         
-      else if ($object=='blockedobjects' && function_exists('rcmail_remote_objects_msg'))
-        return rcmail_remote_objects_msg($attrib);
+        // ADDRESS BOOK
+        'addresslist' => 'rcmail_contacts_list',
+        'addressframe' => 'rcmail_contact_frame',
+        'recordscountdisplay' => 'rcmail_rowcount_display',
+        'contactdetails' => 'rcmail_contact_details',
+        'contacteditform' => 'rcmail_contact_editform',
+        'ldappublicsearch' => 'rcmail_ldap_public_search_form',
+        'ldappublicaddresslist' => 'rcmail_ldap_public_list',
 
-      else if ($object=='messagecontentframe' && function_exists('rcmail_messagecontent_frame'))
-        return rcmail_messagecontent_frame($attrib);
+        // USER SETTINGS
+        'userprefs' => 'rcmail_user_prefs_form',
+        'itentitieslist' => 'rcmail_identities_list',
+        'identityframe' => 'rcmail_identity_frame',
+        'identityform' => 'rcube_identity_form',
+        'foldersubscription' => 'rcube_subscription_form',
+        'createfolder' => 'rcube_create_folder_form',
+        'renamefolder' => 'rcube_rename_folder_form',
+        'composebody' => 'rcmail_compose_body'
+      );
 
-      else if ($object=='messagepartframe' && function_exists('rcmail_message_part_frame'))
-        return rcmail_message_part_frame($attrib);
-
-      else if ($object=='messagepartcontrols' && function_exists('rcmail_message_part_controls'))
-        return rcmail_message_part_controls($attrib);
-
-      else if ($object=='composeheaders' && function_exists('rcmail_compose_headers'))
-        return rcmail_compose_headers($attrib);
-
-      else if ($object=='composesubject' && function_exists('rcmail_compose_subject'))
-        return rcmail_compose_subject($attrib);
-
-      else if ($object=='composebody' && function_exists('rcmail_compose_body'))
-        return rcmail_compose_body($attrib);
-
-      else if ($object=='composeattachmentlist' && function_exists('rcmail_compose_attachment_list'))
-        return rcmail_compose_attachment_list($attrib);
-
-      else if ($object=='composeattachmentform' && function_exists('rcmail_compose_attachment_form'))
-        return rcmail_compose_attachment_form($attrib);
-
-      else if ($object=='composeattachment' && function_exists('rcmail_compose_attachment_field'))
-        return rcmail_compose_attachment_field($attrib);
-
-      else if ($object=='priorityselector' && function_exists('rcmail_priority_selector'))
-        return rcmail_priority_selector($attrib);
+      
+      // execute object handler function
+      if ($object_handlers[$object] && function_exists($object_handlers[$object]))
+        return call_user_func($object_handlers[$object], $attrib);
         
-      else if ($object=='priorityselector' && function_exists('rcmail_priority_selector'))
-        return rcmail_priority_selector($attrib);
-
-
-      // ADDRESS BOOK
-      else if ($object=='addresslist' && function_exists('rcmail_contacts_list'))
-        return rcmail_contacts_list($attrib);
-
-      else if ($object=='addressframe' && function_exists('rcmail_contact_frame'))
-        return rcmail_contact_frame($attrib);
-
-      else if ($object=='recordscountdisplay' && function_exists('rcmail_rowcount_display'))
-        return rcmail_rowcount_display($attrib);
-        
-      else if ($object=='contactdetails' && function_exists('rcmail_contact_details'))
-        return rcmail_contact_details($attrib);
-
-      else if ($object=='contacteditform' && function_exists('rcmail_contact_editform'))
-        return rcmail_contact_editform($attrib);
-
-
-      // USER SETTINGS
-      else if ($object=='userprefs' && function_exists('rcmail_user_prefs_form'))
-        return rcmail_user_prefs_form($attrib);
-
-      else if ($object=='itentitieslist' && function_exists('rcmail_identities_list'))
-        return rcmail_identities_list($attrib);
-
-      else if ($object=='identityframe' && function_exists('rcmail_identity_frame'))
-        return rcmail_identity_frame($attrib);
-
-      else if ($object=='identityform' && function_exists('rcube_identity_form'))
-        return rcube_identity_form($attrib);
-
-      else if ($object=='foldersubscription' && function_exists('rcube_subscription_form'))
-        return rcube_subscription_form($attrib);
-
-      else if ($object=='createfolder' && function_exists('rcube_create_folder_form'))
-        return rcube_create_folder_form($attrib);
-
-
+      else if ($object=='productname')
+        {
+        $name = !empty($CONFIG['product_name']) ? $CONFIG['product_name'] : 'RoundCube Webmail';
+        return rep_specialchars_output($name, 'html', 'all');
+        }
+      else if ($object=='version')
+        {
+        return (string)RCMAIL_VERSION;
+        }
       else if ($object=='pagetitle')
         {
         $task = $GLOBALS['_task'];
-        if ($task=='mail' && isset($GLOBALS['MESSAGE']['subject']))
-          return rep_specialchars_output("RoundCube|Mail :: ".$GLOBALS['MESSAGE']['subject']);
+        $title = !empty($CONFIG['product_name']) ? $CONFIG['product_name'].' :: ' : '';
+        
+        if ($task=='login')
+          $title = rcube_label(array('name' => 'welcome', 'vars' => array('product' => $CONFIG['product_name'])));
+        else if ($task=='mail' && isset($GLOBALS['MESSAGE']['subject']))
+          $title .= $GLOBALS['MESSAGE']['subject'];
         else if (isset($GLOBALS['PAGE_TITLE']))
-          return rep_specialchars_output("RoundCube|Mail :: ".$GLOBALS['PAGE_TITLE']);
+          $title .= $GLOBALS['PAGE_TITLE'];
         else if ($task=='mail' && ($mbox_name = $IMAP->get_mailbox_name()))
-          return "RoundCube|Mail :: ".rep_specialchars_output(UTF7DecodeString($mbox_name), 'html', 'all');
+          $title .= rcube_charset_convert($mbox_name, 'UTF-7', 'UTF-8');
         else
-          return "RoundCube|Mail :: $task";
+          $title .= ucfirst($task);
+          
+        return rep_specialchars_output($title, 'html', 'all');
         }
-
-      else if ($object=='about')
-        return '';
 
       break;
     }
@@ -775,9 +1241,12 @@
 // create and register a button
 function rcube_button($attrib)
   {
-  global $CONFIG, $OUTPUT, $JS_OBJECT_NAME, $BROWSER;
+  global $CONFIG, $OUTPUT, $JS_OBJECT_NAME, $BROWSER, $COMM_PATH, $MAIN_TASKS;
   static $sa_buttons = array();
   static $s_button_count = 100;
+  
+  // these commands can be called directly via url
+  $a_static_commands = array('compose', 'list');
   
   $skin_path = $CONFIG['skin_path'];
   
@@ -788,7 +1257,7 @@
   if ($attrib['type'])
     $attrib['type'] = strtolower($attrib['type']);
   else
-    $attrib['type'] = ($attrib['image'] || $attrib['imagepas'] || $arg['imagect']) ? 'image' : 'link';
+    $attrib['type'] = ($attrib['image'] || $attrib['imagepas'] || $arg['imageact']) ? 'image' : 'link';
   
   
   $command = $attrib['command'];
@@ -798,7 +1267,7 @@
     $attrib = $sa_buttons[$attrib['name']];
 
   // add button to button stack
-  else if($attrib['image'] || $arg['imagect'] || $attrib['imagepas'] || $attrib['class'])
+  else if($attrib['image'] || $arg['imageact'] || $attrib['imagepas'] || $attrib['class'])
     {
     if(!$attrib['name'])
       $attrib['name'] = $command;
@@ -847,14 +1316,22 @@
 
   // register button in the system
   if ($attrib['command'])
+    {
     $OUTPUT->add_script(sprintf("%s.register_button('%s', '%s', '%s', '%s', '%s', '%s');",
                                 $JS_OBJECT_NAME,
                                 $command,
                                 $attrib['id'],
                                 $attrib['type'],
                                 $attrib['imageact'] ? $skin_path.$attrib['imageact'] : $attrib['classact'],
-                                $attirb['imagesel'] ? $skin_path.$attirb['imagesel'] : $attrib['classsel'],
+                                $attrib['imagesel'] ? $skin_path.$attrib['imagesel'] : $attrib['classsel'],
                                 $attrib['imageover'] ? $skin_path.$attrib['imageover'] : ''));
+
+    // make valid href to specific buttons
+    if (in_array($attrib['command'], $MAIN_TASKS))
+      $attrib['href'] = htmlentities(ereg_replace('_task=[a-z]+', '_task='.$attrib['command'], $COMM_PATH));
+    else if (in_array($attrib['command'], $a_static_commands))
+      $attrib['href'] = htmlentities($COMM_PATH.'&_action='.$attrib['command']);
+    }
 
   // overwrite attributes
   if (!$attrib['href'])
@@ -869,19 +1346,24 @@
     $attrib['onmouseout'] = sprintf("return %s.button_out('%s','%s')", $JS_OBJECT_NAME, $command, $attrib['id']);
     }
 
+  if ($command && $attrib['imagesel'])
+    {
+    $attrib['onmousedown'] = sprintf("return %s.button_sel('%s','%s')", $JS_OBJECT_NAME, $command, $attrib['id']);
+    $attrib['onmouseup'] = sprintf("return %s.button_out('%s','%s')", $JS_OBJECT_NAME, $command, $attrib['id']);
+    }
 
   $out = '';
 
   // generate image tag
   if ($attrib['type']=='image')
     {
-    $attrib_str = create_attrib_string($attrib, array('style', 'class', 'id', 'width', 'height', 'border', 'hspace', 'vspace', 'alt'));
+    $attrib_str = create_attrib_string($attrib, array('style', 'class', 'id', 'width', 'height', 'border', 'hspace', 'vspace', 'align', 'alt'));
     $img_tag = sprintf('<img src="%%s"%s />', $attrib_str);
     $btn_content = sprintf($img_tag, $skin_path.$attrib['image']);
     if ($attrib['label'])
       $btn_content .= ' '.$attrib['label'];
     
-    $link_attrib = array('href', 'onclick', 'onmouseover', 'onmouseout', 'title');
+    $link_attrib = array('href', 'onclick', 'onmouseover', 'onmouseout', 'onmousedown', 'onmouseup', 'title');
     }
   else if ($attrib['type']=='link')
     {
@@ -918,7 +1400,7 @@
 
 
 
-function rcube_table_output($attrib, $sql_result, $a_show_cols, $id_col)
+function rcube_table_output($attrib, $table_data, $a_show_cols, $id_col)
   {
   global $DB;
   
@@ -936,21 +1418,44 @@
   $table .= "</tr></thead>\n<tbody>\n";
   
   $c = 0;
-  while ($sql_result && ($sql_arr = $DB->fetch_assoc($sql_result)))
+
+  if (!is_array($table_data)) 
     {
-    $zebra_class = $c%2 ? 'even' : 'odd';
-
-    $table .= sprintf('<tr id="rcmrow%d" class="contact '.$zebra_class.'">'."\n", $sql_arr[$id_col]);
-
-    // format each col
-    foreach ($a_show_cols as $col)
+    while ($table_data && ($sql_arr = $DB->fetch_assoc($table_data)))
       {
-      $cont = rep_specialchars_output($sql_arr[$col]);
-	  $table .= '<td class="'.$col.'">' . $cont . "</td>\n";
-      }
+      $zebra_class = $c%2 ? 'even' : 'odd';
 
-    $table .= "</tr>\n";
-    $c++;
+      $table .= sprintf('<tr id="rcmrow%d" class="contact '.$zebra_class.'">'."\n", $sql_arr[$id_col]);
+
+      // format each col
+      foreach ($a_show_cols as $col)
+        {
+        $cont = rep_specialchars_output($sql_arr[$col]);
+	    $table .= '<td class="'.$col.'">' . $cont . "</td>\n";
+        }
+
+      $table .= "</tr>\n";
+      $c++;
+      }
+    }
+  else 
+    {
+    foreach ($table_data as $row_data)
+      {
+      $zebra_class = $c%2 ? 'even' : 'odd';
+
+      $table .= sprintf('<tr id="rcmrow%d" class="contact '.$zebra_class.'">'."\n", $row_data[$id_col]);
+
+      // format each col
+      foreach ($a_show_cols as $col)
+        {
+        $cont = rep_specialchars_output($row_data[$col]);
+	    $table .= '<td class="'.$col.'">' . $cont . "</td>\n";
+        }
+
+      $table .= "</tr>\n";
+      $c++;
+      }
     }
 
   // complete message table
@@ -989,46 +1494,69 @@
   }
 
 
+// compose a valid attribute string for HTML tags
 function create_attrib_string($attrib, $allowed_attribs=array('id', 'class', 'style'))
   {
   // allow the following attributes to be added to the <iframe> tag
   $attrib_str = '';
   foreach ($allowed_attribs as $a)
     if (isset($attrib[$a]))
-      $attrib_str .= sprintf(' %s="%s"', $a, $attrib[$a]);
+      $attrib_str .= sprintf(' %s="%s"', $a, str_replace('"', '&quot;', $attrib[$a]));
 
   return $attrib_str;
   }
 
+
+// convert a HTML attribute string attributes to an associative array (name => value)
+function parse_attrib_string($str)
+  {
+  $attrib = array();
+  preg_match_all('/\s*([-_a-z]+)=["]([^"]+)["]?/i', stripslashes($str), $regs, PREG_SET_ORDER);
+
+  // convert attributes to an associative array (name => value)
+  if ($regs)
+    foreach ($regs as $attr)
+      $attrib[strtolower($attr[1])] = $attr[2];
+
+  return $attrib;
+  }
 
 
 function format_date($date, $format=NULL)
   {
   global $CONFIG, $sess_user_lang;
   
+  $ts = NULL;
+  
   if (is_numeric($date))
     $ts = $date;
   else if (!empty($date))
-    $ts = strtotime($date);
-  else
+    $ts = @strtotime($date);
+    
+  if (empty($ts))
     return '';
+   
+  // get user's timezone
+  $tz = $CONFIG['timezone'];
+  if ($CONFIG['dst_active'])
+    $tz++;
 
   // convert time to user's timezone
-  $timestamp = $ts - date('Z', $ts) + ($CONFIG['timezone'] * 3600);
+  $timestamp = $ts - date('Z', $ts) + ($tz * 3600);
   
   // get current timestamp in user's timezone
   $now = time();  // local time
   $now -= (int)date('Z'); // make GMT time
-  $now += ($CONFIG['timezone'] * 3600); // user's time
+  $now += ($tz * 3600); // user's time
+  $now_date = getdate();
 
-  $day_secs = 60*((int)date('H', $now)*60 + (int)date('i', $now));
-  $week_secs = 60 * 60 * 24 * 7;
-  $diff = $now - $timestamp;
+  $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']);
 
   // define date format depending on current time  
-  if ($CONFIG['prettydate'] && !$format && $diff < $day_secs)
+  if ($CONFIG['prettydate'] && !$format && $timestamp > $today_limit)
     return sprintf('%s %s', rcube_label('today'), date('H:i', $timestamp));
-  else if ($CONFIG['prettydate'] && !$format && $diff < $week_secs)
+  else if ($CONFIG['prettydate'] && !$format && $timestamp > $week_limit)
     $format = $CONFIG['date_short'] ? $CONFIG['date_short'] : 'D H:i';
   else if (!$format)
     $format = $CONFIG['date_long'] ? $CONFIG['date_long'] : 'd.m.Y H:i';
@@ -1086,6 +1614,38 @@
   }
 
 
+// return the IMAP username of the current session
+function rcmail_current_username($attrib)
+  {
+  global $DB;
+  static $s_username;
+
+  // alread fetched  
+  if (!empty($s_username))
+    return $s_username;
+
+  // get e-mail address form default identity
+  $sql_result = $DB->query("SELECT email AS mailto
+                            FROM ".get_table_name('identities')."
+                            WHERE  user_id=?
+                            AND    standard=1
+                            AND    del<>1",
+                            $_SESSION['user_id']);
+                                   
+  if ($DB->num_rows($sql_result))
+    {
+    $sql_arr = $DB->fetch_assoc($sql_result);
+    $s_username = $sql_arr['mailto'];
+    }
+  else if (strstr($_SESSION['username'], '@'))
+    $s_username = $_SESSION['username'];
+  else
+    $s_username = $_SESSION['username'].'@'.$_SESSION['imap_host'];
+
+  return $s_username;
+  }
+
+
 // return code for the webmail login form
 function rcmail_login_form($attrib)
   {
@@ -1096,18 +1656,18 @@
   $labels['pass'] = rcube_label('password');
   $labels['host'] = rcube_label('server');
   
-  $input_user = new textfield(array('name' => '_user', 'size' => 30));
-  $input_pass = new passwordfield(array('name' => '_pass', 'size' => 30));
+  $input_user = new textfield(array('name' => '_user', 'id' => 'rcmloginuser', 'size' => 30));
+  $input_pass = new passwordfield(array('name' => '_pass', 'id' => 'rcmloginpwd', 'size' => 30));
   $input_action = new hiddenfield(array('name' => '_action', 'value' => 'login'));
     
   $fields = array();
-  $fields['user'] = $input_user->show($_POST['_user']);
+  $fields['user'] = $input_user->show(get_input_value('_user', RCUBE_INPUT_POST));
   $fields['pass'] = $input_pass->show();
   $fields['action'] = $input_action->show();
   
   if (is_array($CONFIG['default_host']))
     {
-    $select_host = new select(array('name' => '_host'));
+    $select_host = new select(array('name' => '_host', 'id' => 'rcmloginhost'));
     
     foreach ($CONFIG['default_host'] as $key => $value)
       $select_host->add($value, (is_numeric($key) ? $value : $key));
@@ -1116,7 +1676,7 @@
     }
   else if (!strlen($CONFIG['default_host']))
     {
-	$input_host = new textfield(array('name' => '_host', 'size' => 30));
+	$input_host = new textfield(array('name' => '_host', 'id' => 'rcmloginhost', 'size' => 30));
 	$fields['host'] = $input_host->show($_POST['_host']);
     }
 
@@ -1129,7 +1689,7 @@
     
 </tr><tr>
 
-<td class="title">$labels[host]</td>
+<td class="title"><label for="rcmloginhost">$labels[host]</label></td>
 <td>$fields[host]</td>
 
 EOF;
@@ -1142,12 +1702,12 @@
 $fields[action]
 <table><tr>
 
-<td class="title">$labels[user]</td>
+<td class="title"><label for="rcmloginuser">$labels[user]</label></td>
 <td>$fields[user]</td>
 
 </tr><tr>
 
-<td class="title">$labels[pass]</td>
+<td class="title"><label for="rcmloginpwd">$labels[pass]</label></td>
 <td>$fields[pass]</td>
 $form_host
 </tr></table>
@@ -1158,4 +1718,115 @@
   }
 
 
-?>
\ No newline at end of file
+function rcmail_charset_selector($attrib)
+  {
+  global $OUTPUT;
+  
+  // pass the following attributes to the form class
+  $field_attrib = array('name' => '_charset');
+  foreach ($attrib as $attr => $value)
+    if (in_array($attr, array('id', 'class', 'style', 'size', 'tabindex')))
+      $field_attrib[$attr] = $value;
+      
+  $charsets = array(
+    'US-ASCII'     => 'ASCII (English)',
+    'EUC-JP'       => 'EUC-JP (Japanese)',
+    'EUC-KR'       => 'EUC-KR (Korean)',
+    'BIG5'         => 'BIG5 (Chinese)',
+    'GB2312'       => 'GB2312 (Chinese)',
+    'ISO-2022-JP'  => 'ISO-2022-JP (Japanese)',
+    'ISO-8859-1'   => 'ISO-8859-1 (Latin-1)',
+    'ISO-8859-2'   => 'ISO-8895-2 (Central European)',
+    'ISO-8859-7'   => 'ISO-8859-7 (Greek)',
+    'ISO-8859-9'   => 'ISO-8859-9 (Turkish)',
+    'Windows-1251' => 'Windows-1251 (Cyrillic)',
+    'Windows-1252' => 'Windows-1252 (Western)',
+    'Windows-1255' => 'Windows-1255 (Hebrew)',
+    'Windows-1256' => 'Windows-1256 (Arabic)',
+    'Windows-1257' => 'Windows-1257 (Baltic)',
+    'UTF-8'        => 'UTF-8'
+    );
+
+  $select = new select($field_attrib);
+  $select->add(array_values($charsets), array_keys($charsets));
+  
+  $set = $_POST['_charset'] ? $_POST['_charset'] : $OUTPUT->get_charset();
+  return $select->show($set);
+  }
+
+
+/****** debugging functions ********/
+
+
+/**
+ * Print or write debug messages
+ *
+ * @param mixed Debug message or data
+ */
+function console($msg)
+  {
+  if (!is_string($msg))
+    $msg = var_export($msg, true);
+
+  if (!($GLOBALS['CONFIG']['debug_level'] & 4))
+    write_log('console', $msg);
+  else if ($GLOBALS['REMOTE_REQUEST'])
+    print "/*\n $msg \n*/\n";
+  else
+    {
+    print '<div style="background:#eee; border:1px solid #ccc; margin-bottom:3px; padding:6px"><pre>';
+    print $msg;
+    print "</pre></div>\n";
+    }
+  }
+
+
+/**
+ * Append a line to a logfile in the logs directory.
+ * Date will be added automatically to the line.
+ *
+ * @param $name Name of logfile
+ * @param $line Line to append
+ */
+function write_log($name, $line)
+  {
+  global $CONFIG;
+  
+  $log_entry = sprintf("[%s]: %s\n",
+                 date("d-M-Y H:i:s O", mktime()),
+                 $line);
+                 
+  if (empty($CONFIG['log_dir']))
+    $CONFIG['log_dir'] = $INSTALL_PATH.'logs';
+      
+  // try to open specific log file for writing
+  if ($fp = @fopen($CONFIG['log_dir'].'/'.$name, 'a'))    
+    {
+    fwrite($fp, $log_entry);
+    fclose($fp);
+    }
+  }
+
+
+function rcube_timer()
+  {
+  list($usec, $sec) = explode(" ", microtime());
+  return ((float)$usec + (float)$sec);
+  }
+  
+
+function rcube_print_time($timer, $label='Timer')
+  {
+  static $print_count = 0;
+  
+  $print_count++;
+  $now = rcube_timer();
+  $diff = $now-$timer;
+  
+  if (empty($label))
+    $label = 'Timer '.$print_count;
+  
+  console(sprintf("%s: %0.4f sec", $label, $diff));
+  }
+
+?>

--
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