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/rcube_imap.inc | 1194 ++++++++++++++++++++++++++++++++++++++++++++++-------------
 1 files changed, 923 insertions(+), 271 deletions(-)

diff --git a/program/include/rcube_imap.inc b/program/include/rcube_imap.inc
index cb6b409..a11c749 100644
--- a/program/include/rcube_imap.inc
+++ b/program/include/rcube_imap.inc
@@ -26,7 +26,6 @@
  */
 require_once('lib/imap.inc');
 require_once('lib/mime.inc');
-require_once('lib/utf7.inc');
 
 
 /**
@@ -36,7 +35,7 @@
  *
  * @package    RoundCube Webmail
  * @author     Thomas Bruederli <roundcube@gmail.com>
- * @version    1.22
+ * @version    1.34
  * @link       http://ilohamail.org
  */
 class rcube_imap
@@ -52,10 +51,11 @@
   var $sort_order = 'DESC';
   var $delimiter = NULL;
   var $caching_enabled = FALSE;
-  var $default_folders = array('inbox', 'drafts', 'sent', 'junk', 'trash');
+  var $default_folders = array('INBOX');
+  var $default_folders_lc = array('inbox');
   var $cache = array();
   var $cache_keys = array();  
-  var $cache_changes = array();  
+  var $cache_changes = array();
   var $uid_id_map = array();
   var $msg_headers = array();
   var $capabilities = array();
@@ -98,7 +98,7 @@
    */
   function connect($host, $user, $pass, $port=143, $use_ssl=FALSE)
     {
-    global $ICL_SSL, $ICL_PORT;
+    global $ICL_SSL, $ICL_PORT, $IMAP_USE_INTERNAL_DATE;
     
     // check for Open-SSL support in PHP build
     if ($use_ssl && in_array('openssl', get_loaded_extensions()))
@@ -111,6 +111,8 @@
       }
 
     $ICL_PORT = $port;
+    $IMAP_USE_INTERNAL_DATE = false;
+    
     $this->conn = iil_Connect($host, $user, $pass, array('imap' => 'check'));
     $this->host = $host;
     $this->user = $user;
@@ -130,11 +132,10 @@
                        'message' => $GLOBALS['iil_error']), TRUE, FALSE);
       }
 
-    // get account namespace
+    // get server properties
     if ($this->conn)
       {
       $this->_parse_capability($this->conn->capability);
-      iil_C_NameSpace($this->conn);
       
       if (!empty($this->conn->delimiter))
         $this->delimiter = $this->conn->delimiter;
@@ -206,15 +207,16 @@
     {
     if (is_array($arr))
       {
-      $this->default_folders = array();
-      
-      // add mailbox names lower case
-      foreach ($arr as $mbox)
-        $this->default_folders[] = strtolower($mbox);
-      
+      $this->default_folders = $arr;
+      $this->default_folders_lc = array();
+
       // add inbox if not included
-      if (!in_array('inbox', $this->default_folders))
-        array_unshift($arr, 'inbox');
+      if (!in_array_nocase('INBOX', $this->default_folders))
+        array_unshift($this->default_folders, 'INBOX');
+
+      // create a second list with lower cased names
+      foreach ($this->default_folders as $mbox)
+        $this->default_folders_lc[] = strtolower($mbox);
       }
     }
 
@@ -227,9 +229,9 @@
    * @param  string  Mailbox/Folder name
    * @access public
    */
-  function set_mailbox($mbox)
+  function set_mailbox($new_mbox)
     {
-    $mailbox = $this->_mod_mailbox($mbox);
+    $mailbox = $this->_mod_mailbox($new_mbox);
 
     if ($this->mailbox == $mailbox)
       return;
@@ -324,12 +326,16 @@
     $a_out = array();
     $a_mboxes = $this->_list_mailboxes($root, $filter);
 
-    foreach ($a_mboxes as $mbox)
+    foreach ($a_mboxes as $mbox_row)
       {
-      $name = $this->_mod_mailbox($mbox, 'out');
+      $name = $this->_mod_mailbox($mbox_row, 'out');
       if (strlen($name))
         $a_out[] = $name;
       }
+
+    // INBOX should always be available
+    if (!in_array_nocase('INBOX', $a_out))
+      array_unshift($a_out, 'INBOX');
 
     // sort mailboxes
     $a_out = $this->_sort_mailbox_list($a_out);
@@ -360,15 +366,6 @@
     if (!is_array($a_folders) || !sizeof($a_folders))
       $a_folders = array();
 
-    // create INBOX if it does not exist
-    if (!in_array_nocase('INBOX', $a_folders))
-      {
-      $this->create_mailbox('INBOX', TRUE);
-      array_unshift($a_folders, 'INBOX');
-      }
-
-    $a_mailbox_cache = array();
-
     // write mailboxlist to cache
     $this->update_cache('mailboxes', $a_folders);
     
@@ -385,9 +382,9 @@
    * @return  number   Number of messages
    * @access  public   
    */
-  function messagecount($mbox='', $mode='ALL', $force=FALSE)
+  function messagecount($mbox_name='', $mode='ALL', $force=FALSE)
     {
-    $mailbox = $mbox ? $this->_mod_mailbox($mbox) : $this->mailbox;
+    $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
     return $this->_messagecount($mailbox, $mode, $force);
     }
 
@@ -444,7 +441,7 @@
         $count = iil_C_CountMessages($this->conn, $mailbox);
       }
 
-    if (is_array($a_mailbox_cache[$mailbox]))
+    if (!is_array($a_mailbox_cache[$mailbox]))
       $a_mailbox_cache[$mailbox] = array();
       
     $a_mailbox_cache[$mailbox][$mode] = (int)$count;
@@ -467,15 +464,15 @@
    * @return  array    Indexed array with message header objects
    * @access  public   
    */
-  function list_headers($mbox='', $page=NULL, $sort_field=NULL, $sort_order=NULL)
+  function list_headers($mbox_name='', $page=NULL, $sort_field=NULL, $sort_order=NULL)
     {
-    $mailbox = $mbox ? $this->_mod_mailbox($mbox) : $this->mailbox;
+    $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
     return $this->_list_headers($mailbox, $page, $sort_field, $sort_order);
     }
 
 
   /**
-   * Private method for listing message header
+   * Private method for listing message headers
    *
    * @access  private
    * @see     rcube_imap::list_headers
@@ -491,6 +488,153 @@
       $this->sort_order = strtoupper($sort_order);
 
     $max = $this->_messagecount($mailbox);
+    $start_msg = ($this->list_page-1) * $this->page_size;
+
+    list($begin, $end) = $this->_get_message_range($max, $page);
+
+  	// mailbox is empty
+    if ($begin >= $end)
+      return array();
+
+    $headers_sorted = FALSE;
+    $cache_key = $mailbox.'.msg';
+    $cache_status = $this->check_cache_status($mailbox, $cache_key);
+
+    // cache is OK, we can get all messages from local cache
+    if ($cache_status>0)
+      {
+      $a_msg_headers = $this->get_message_cache($cache_key, $start_msg, $start_msg+$this->page_size, $this->sort_field, $this->sort_order);
+      $headers_sorted = TRUE;
+      }
+    // cache is dirty, sync it
+    else if ($this->caching_enabled && $cache_status==-1 && !$recursive)
+      {
+      $this->sync_header_index($mailbox);
+      return $this->_list_headers($mailbox, $page, $this->sort_field, $this->sort_order, TRUE);
+      }
+    else
+      {
+      // retrieve headers from IMAP
+      if ($this->get_capability('sort') && ($msg_index = iil_C_Sort($this->conn, $mailbox, $this->sort_field, $this->skip_deleted ? 'UNDELETED' : '')))
+        {        
+        $msgs = $msg_index[$begin];
+        for ($i=$begin+1; $i < $end; $i++)
+          $msgs = $msgs.','.$msg_index[$i];
+        }
+      else
+        {
+        $msgs = sprintf("%d:%d", $begin+1, $end);
+
+        $i = 0;
+        for ($msg_seqnum = $begin; $msg_seqnum <= $end; $msg_seqnum++)
+          $msg_index[$i++] = $msg_seqnum;
+        }
+
+      // use this class for message sorting
+      $sorter = new rcube_header_sorter();
+      $sorter->set_sequence_numbers($msg_index);
+
+      // fetch reuested headers from server
+      $a_msg_headers = array();
+      $deleted_count = $this->_fetch_headers($mailbox, $msgs, $a_msg_headers, $cache_key);
+
+      // delete cached messages with a higher index than $max
+      $this->clear_message_cache($cache_key, $max);
+
+
+      // kick child process to sync cache
+      // ...
+
+      }
+
+
+    // return empty array if no messages found
+	if (!is_array($a_msg_headers) || empty($a_msg_headers))
+		return array();
+
+
+    // if not already sorted
+    if (!$headers_sorted)
+      {
+      $sorter->sort_headers($a_msg_headers);
+
+      if ($this->sort_order == 'DESC')
+        $a_msg_headers = array_reverse($a_msg_headers);
+      }
+
+    return array_values($a_msg_headers);
+    }
+
+
+
+  /**
+   * Public method for listing a specific set of headers
+   * convert mailbox name with root dir first
+   *
+   * @param   string   Mailbox/folder name
+   * @param   array    List of message ids to list
+   * @param   number   Current page to list
+   * @param   string   Header field to sort by
+   * @param   string   Sort order [ASC|DESC]
+   * @return  array    Indexed array with message header objects
+   * @access  public   
+   */
+  function list_header_set($mbox_name='', $msgs, $page=NULL, $sort_field=NULL, $sort_order=NULL)
+    {
+    $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
+    return $this->_list_header_set($mailbox, $msgs, $page, $sort_field, $sort_order);    
+    }
+    
+
+  /**
+   * Private method for listing a set of message headers
+   *
+   * @access  private
+   * @see     rcube_imap::list_header_set
+   */
+  function _list_header_set($mailbox, $msgs, $page=NULL, $sort_field=NULL, $sort_order=NULL)
+    {
+    // also accept a comma-separated list of message ids
+    if (is_string($msgs))
+      $msgs = split(',', $msgs);
+      
+    if (!strlen($mailbox) || empty($msgs))
+      return array();
+
+    if ($sort_field!=NULL)
+      $this->sort_field = $sort_field;
+    if ($sort_order!=NULL)
+      $this->sort_order = strtoupper($sort_order);
+
+    $max = count($msgs);
+    $start_msg = ($this->list_page-1) * $this->page_size;
+
+    // fetch reuested headers from server
+    $a_msg_headers = array();
+    $this->_fetch_headers($mailbox, join(',', $msgs), $a_msg_headers, NULL);
+
+    // return empty array if no messages found
+	if (!is_array($a_msg_headers) || empty($a_msg_headers))
+		return array();
+
+    // if not already sorted
+    $a_msg_headers = iil_SortHeaders($a_msg_headers, $this->sort_field, $this->sort_order);
+
+	// only return the requested part of the set
+	return array_slice(array_values($a_msg_headers), $start_msg, min($max-$start_msg, $this->page_size));
+    }
+
+
+  /**
+   * Helper function to get first and last index of the requested set
+   *
+   * @param  number  message count
+   * @param  mixed   page number to show, or string 'all'
+   * @return array   array with two values: first index, last index
+   * @access private
+   */
+  function _get_message_range($max, $page)
+    {
     $start_msg = ($this->list_page-1) * $this->page_size;
     
     if ($page=='all')
@@ -512,88 +656,18 @@
     if ($begin < 0) $begin = 0;
     if ($end < 0) $end = $max;
     if ($end > $max) $end = $max;
-
-//console("fetch headers $start_msg to ".($start_msg+$this->page_size)." (msg $begin to $end)");
-
-    $headers_sorted = FALSE;
-    $cache_key = $mailbox.'.msg';
-    $cache_status = $this->check_cache_status($mailbox, $cache_key);
-
-//console("Cache status = $cache_status");
     
-    // cache is OK, we can get all messages from local cache
-    if ($cache_status>0)
-      {
-      $a_msg_headers = $this->get_message_cache($cache_key, $start_msg, $start_msg+$this->page_size, $this->sort_field, $this->sort_order);
-      $headers_sorted = TRUE;
-      }
-    else
-      {
-      // retrieve headers from IMAP
-      if ($this->get_capability('sort') && ($msg_index = iil_C_Sort($this->conn, $mailbox, $this->sort_field, $this->skip_deleted ? 'UNDELETED' : '')))
-        {
-//console("$mailbox: ".join(',', $msg_index));
-        
-        $msgs = $msg_index[$begin];
-        for ($i=$begin+1; $i < $end; $i++)
-          {
-          //if ($this->sort_order == 'DESC')
-          //  $msgs = $msg_index[$i].','.$msgs;
-          //else
-            $msgs = $msgs.','.$msg_index[$i];
-          }
-
-        $sorted = TRUE;
-        }
-      else
-        {
-        $msgs = sprintf("%d:%d", $begin+1, $end);
-        $sorted = FALSE;
-        }
-
-
-      // cache is dirty, sync it
-      if ($this->caching_enabled && $cache_status==-1 && !$recursive)
-        {
-        $this->sync_header_index($mailbox);
-        return $this->_list_headers($mailbox, $page, $this->sort_field, $this->sort_order, TRUE);
-        }      
-
-        
-      // fetch reuested headers from server
-      $a_header_index = iil_C_FetchHeaders($this->conn, $mailbox, $msgs);
-      $a_msg_headers = array();
-      $deleted_count = $this->_fetch_headers($mailbox, $msgs, $a_msg_headers, $cache_key);
-
-      // delete cached messages with a higher index than $max
-      $this->clear_message_cache($cache_key, $max);
-
-        
-      // kick child process to sync cache
-      // ...
-      
-      }
-
-
-    // return empty array if no messages found
-	if (!is_array($a_msg_headers) || empty($a_msg_headers))
-		return array();
-
-
-    // if not already sorted
-    if (!$headers_sorted)
-      $a_msg_headers = iil_SortHeaders($a_msg_headers, $this->sort_field, $this->sort_order);
-
-    return array_values($a_msg_headers);
+    return array($begin, $end);
     }
-
+    
+    
 
   /**
    * Fetches message headers
    * Used for loop
    *
    * @param  string  Mailbox name
-   * @param  string  Message indey to fetch
+   * @param  string  Message index to fetch
    * @param  array   Reference to message headers array
    * @param  array   Array with cache index
    * @return number  Number of deleted messages
@@ -603,7 +677,7 @@
     {
     // cache is incomplete
     $cache_index = $this->get_message_cache_index($cache_key);
-
+    
     // fetch reuested headers from server
     $a_header_index = iil_C_FetchHeaders($this->conn, $mailbox, $msgs);
     $deleted_count = 0;
@@ -633,17 +707,23 @@
     return $deleted_count;
     }
     
-
-
-  // return sorted array of message UIDs
-  function message_index($mbox='', $sort_field=NULL, $sort_order=NULL)
+  
+  /**
+   * Return sorted array of message UIDs
+   *
+   * @param string Mailbox to get index from
+   * @param string Sort column
+   * @param string Sort order [ASC, DESC]
+   * @return array Indexed array with message ids
+   */
+  function message_index($mbox_name='', $sort_field=NULL, $sort_order=NULL)
     {
     if ($sort_field!=NULL)
       $this->sort_field = $sort_field;
     if ($sort_order!=NULL)
       $this->sort_order = strtoupper($sort_order);
 
-    $mailbox = $mbox ? $this->_mod_mailbox($mbox) : $this->mailbox;
+    $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
     $key = "$mbox:".$this->sort_field.":".$this->sort_order.".msgi";
 
     // have stored it in RAM
@@ -664,17 +744,13 @@
 
     // fetch complete message index
     $msg_count = $this->_messagecount($mailbox);
-    if ($this->get_capability('sort') && ($a_index = iil_C_Sort($this->conn, $mailbox, $this->sort_field)))
+    if ($this->get_capability('sort') && ($a_index = iil_C_Sort($this->conn, $mailbox, $this->sort_field, '', TRUE)))
       {
-      $a_uids = iil_C_FetchUIDs($this->conn, $mailbox);
-
       if ($this->sort_order == 'DESC')
         $a_index = array_reverse($a_index);
 
-      $i = 0;
-      $this->cache[$key] = array();
-      foreach ($a_index as $index => $value)
-        $this->cache[$key][$i++] = $a_uids[$value];
+      $this->cache[$key] = $a_index;
+
       }
     else
       {
@@ -710,7 +786,6 @@
       // message in cache at correct position
       if ($cache_index[$id] == $uid)
         {
-// console("$id / $uid: OK");
         unset($cache_index[$id]);
         continue;
         }
@@ -718,20 +793,16 @@
       // message in cache but in wrong position
       if (in_array((string)$uid, $cache_index, TRUE))
         {
-// console("$id / $uid: Moved");
         unset($cache_index[$id]);        
         }
       
       // other message at this position
       if (isset($cache_index[$id]))
         {
-// console("$id / $uid: Delete");
         $this->remove_message_cache($cache_key, $id);
         unset($cache_index[$id]);
         }
         
-
-// console("$id / $uid: Add");
 
       // fetch complete headers and add to cache
       $headers = iil_C_FetchHeader($this->conn, $mailbox, $id);
@@ -747,58 +818,346 @@
     }
 
 
-  function search($mbox='', $criteria='ALL')
+  /**
+   * Invoke search request to IMAP server
+   *
+   * @param  string  mailbox name to search in
+   * @param  string  search criteria (ALL, TO, FROM, SUBJECT, etc)
+   * @param  string  search string
+   * @return array   search results as list of message ids
+   * @access public
+   */
+  function search($mbox_name='', $criteria='ALL', $str=NULL, $charset=NULL)
     {
-    $mailbox = $mbox ? $this->_mod_mailbox($mbox) : $this->mailbox;
-    return $this->_search_index($mailbox, $criteria);
-    }
-    
-    
+    $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
+    if ($str && $criteria)
+      {
+      $search = (!empty($charset) ? "CHARSET $charset " : '') . sprintf("%s {%d}\r\n%s", $criteria, strlen($str), $str);
+      $results = $this->_search_index($mailbox, $search);
+
+      // try search with ISO charset (should be supported by server)
+      if (empty($results) && !empty($charset) && $charset!='ISO-8859-1')
+        $results = $this->search($mbox_name, $criteria, rcube_charset_convert($str, $charset, 'ISO-8859-1'), 'ISO-8859-1');
+      
+      return $results;
+      }
+    else
+      return $this->_search_index($mailbox, $criteria);
+    }    
+
+
+  /**
+   * Private search method
+   *
+   * @return array   search results as list of message ids
+   * @access private
+   * @see rcube_imap::search()
+   */
   function _search_index($mailbox, $criteria='ALL')
     {
     $a_messages = iil_C_Search($this->conn, $mailbox, $criteria);
+    // clean message list (there might be some empty entries)
+    if (is_array($a_messages))
+      {
+      foreach ($a_messages as $i => $val)
+        if (empty($val))
+          unset($a_messages[$i]);
+      }
+        
     return $a_messages;
     }
 
 
-  function get_headers($id, $mbox=NULL, $is_uid=TRUE)
+  /**
+   * Return message headers object of a specific message
+   *
+   * @param int     Message ID
+   * @param string  Mailbox to read from 
+   * @param boolean True if $id is the message UID
+   * @return object Message headers representation
+   */
+  function get_headers($id, $mbox_name=NULL, $is_uid=TRUE)
     {
-    $mailbox = $mbox ? $this->_mod_mailbox($mbox) : $this->mailbox;
+    $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
+    $uid = $is_uid ? $id : $this->_id2uid($id);
 
     // get cached headers
-    if ($headers = $this->get_cached_message($mailbox.'.msg', $uid))
+    if ($uid && ($headers = &$this->get_cached_message($mailbox.'.msg', $uid)))
       return $headers;
 
-    $msg_id = $is_uid ? $this->_uid2id($id) : $id;
-    $headers = iil_C_FetchHeader($this->conn, $mailbox, $msg_id);
+    $headers = iil_C_FetchHeader($this->conn, $mailbox, $id, $is_uid);
 
     // write headers cache
     if ($headers)
-      $this->add_message_cache($mailbox.'.msg', $msg_id, $headers);
+      {
+      if ($is_uid)
+        $this->uid_id_map[$mbox_name][$uid] = $headers->id;
+
+      $this->add_message_cache($mailbox.'.msg', $headers->id, $headers);
+      }
 
     return $headers;
     }
 
 
-  function get_body($uid, $part=1)
+  /**
+   * Fetch body structure from the IMAP server and build
+   * an object structure similar to the one generated by PEAR::Mail_mimeDecode
+   *
+   * @param Int Message UID to fetch
+   * @return object Standard object tree or False on failure
+   */
+  function &get_structure($uid)
     {
+    $cache_key = $this->mailbox.'.msg';
+    $headers = &$this->get_cached_message($cache_key, $uid, true);
+
+    // return cached message structure
+    if (is_object($headers) && is_object($headers->structure))
+      return $headers->structure;
+    
+    // resolve message sequence number
     if (!($msg_id = $this->_uid2id($uid)))
       return FALSE;
 
 	$structure_str = iil_C_FetchStructureString($this->conn, $this->mailbox, $msg_id); 
 	$structure = iml_GetRawStructureArray($structure_str);
-    $body = iil_C_FetchPartBody($this->conn, $this->mailbox, $msg_id, $part);
+	$struct = false;
+	
+    // parse structure and add headers
+    if (!empty($structure))
+      {
+      $this->_msg_id = $msg_id;
+      $headers = $this->get_headers($msg_id, NULL, FALSE);
+      
+      $struct = &$this->_structure_part($structure);
+      $struct->headers = get_object_vars($headers);
 
-    $encoding = iml_GetPartEncodingCode($structure, $part);
+      // don't trust given content-type
+      if (empty($struct->parts) && !empty($struct->headers['ctype']))
+        {
+        $struct->mime_id = '1';
+        $struct->mimetype = strtolower($struct->headers['ctype']);
+        list($struct->ctype_primary, $struct->ctype_secondary) = explode('/', $struct->mimetype);
+        }
+
+      // write structure to cache
+      if ($this->caching_enabled)
+        $this->add_message_cache($cache_key, $msg_id, $headers, $struct);
+      }
+	
+	return $struct;
+	}
+
+  
+  /**
+   * Build message part object
+   *
+   * @access private
+   */
+  function &_structure_part($part, $count=0, $parent='')
+    {
+    $struct = new rcube_message_part;
+    $struct->mime_id = empty($parent) ? (string)$count : "$parent.$count";
     
-    if ($encoding==3) $body = $this->mime_decode($body, 'base64');
-    else if ($encoding==4) $body = $this->mime_decode($body, 'quoted-printable');
+    // multipart
+    if (is_array($part[0]))
+      {
+      $struct->ctype_primary = 'multipart';
+      
+      // find first non-array entry
+      for ($i=1; count($part); $i++)
+        if (!is_array($part[$i]))
+          {
+          $struct->ctype_secondary = strtolower($part[$i]);
+          break;
+          }
+          
+      $struct->mimetype = 'multipart/'.$struct->ctype_secondary;
+
+      $struct->parts = array();
+      for ($i=0, $count=0; $i<count($part); $i++)
+        if (is_array($part[$i]) && count($part[$i]) > 5)
+          $struct->parts[] = $this->_structure_part($part[$i], ++$count, $struct->mime_id);
+
+      return $struct;      
+      }
+    
+    
+    // regular part
+    $struct->ctype_primary = strtolower($part[0]);
+    $struct->ctype_secondary = strtolower($part[1]);
+    $struct->mimetype = $struct->ctype_primary.'/'.$struct->ctype_secondary;
+	
+    // read content type parameters
+	if (is_array($part[2]))
+	  {
+	  $struct->ctype_parameters = array();
+      for ($i=0; $i<count($part[2]); $i+=2)
+        $struct->ctype_parameters[strtolower($part[2][$i])] = $part[2][$i+1];
+        
+      if (isset($struct->ctype_parameters['charset']))
+        $struct->charset = $struct->ctype_parameters['charset'];
+	  }
+	  
+	// read content encoding
+	if (!empty($part[5]) && $part[5]!='NIL')
+	  {
+	  $struct->encoding = strtolower($part[5]);
+	  $struct->headers['content-transfer-encoding'] = $struct->encoding;
+	  }
+	  
+	// get part size
+	if (!empty($part[6]) && $part[6]!='NIL')
+	  $struct->size = intval($part[6]);
+
+	// read part disposition
+    $di = count($part) - 3;
+    if (is_array($part[$di]))
+      {
+      $struct->disposition = strtolower($part[$di][0]);
+
+      if (is_array($part[$di][1]))
+        for ($n=0; $n<count($part[$di][1]); $n+=2)
+          $struct->d_parameters[strtolower($part[$di][1][$n])] = $part[$di][1][$n+1];
+      }
+      
+    // get child parts
+    if (is_array($part[8]) && $di != 8)
+      {
+      $struct->parts = array();
+      for ($i=0, $count=0; $i<count($part[8]); $i++)
+        if (is_array($part[8][$i]) && count($part[8][$i]) > 5)
+          $struct->parts[] = $this->_structure_part($part[8][$i], ++$count, $struct->mime_id);
+      }
+      
+	// get part ID
+	if (!empty($part[3]) && $part[3]!='NIL')
+	  {
+	  $struct->content_id = $part[3];
+	  $struct->headers['content-id'] = $part[3];
+	  
+	  if (empty($struct->disposition))
+	    $struct->disposition = 'inline';
+	  }
+
+    // fetch message headers if message/rfc822
+    if ($struct->ctype_primary=='message')
+      {
+      $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
+      $struct->headers = $this->_parse_headers($headers);
+      }
+  
+  	return $struct;
+    }
+    
+  
+  /**
+   * Return a flat array with references to all parts, indexed by part numbmers
+   *
+   * @param object Message body structure
+   * @return Array with part number -> object pairs
+   */
+  function get_mime_numbers(&$structure)
+    {
+    $a_parts = array();
+    $this->_get_part_numbers($structure, $a_parts);
+    return $a_parts;
+    }
+  
+  
+  /**
+   * Helper method for recursive calls
+   *
+   * @access 
+   */
+  function _get_part_numbers(&$part, &$a_parts)
+    {
+    if ($part->mime_id)
+      $a_parts[$part->mime_id] = &$part;
+      
+    if (is_array($part->parts))
+      for ($i=0; $i<count($part->parts); $i++)
+        $this->_get_part_numbers($part->parts[$i], $a_parts);
+    }
+  
+
+  /**
+   * Fetch message body of a specific message from the server
+   *
+   * @param  int    Message UID
+   * @param  string Part number
+   * @param  object Part object created by get_structure()
+   * @param  mixed  True to print part, ressource to write part contents in
+   * @return Message/part body if not printed
+   */
+  function &get_message_part($uid, $part=1, $o_part=NULL, $print=NULL)
+    {
+    if (!($msg_id = $this->_uid2id($uid)))
+      return FALSE;
+    
+    // get part encoding if not provided
+    if (!is_object($o_part))
+      {
+      $structure_str = iil_C_FetchStructureString($this->conn, $this->mailbox, $msg_id); 
+      $structure = iml_GetRawStructureArray($structure_str);
+      $part_type = iml_GetPartTypeCode($structure, $part);
+      $o_part = new rcube_message_part;
+      $o_part->ctype_primary = $part_type==0 ? 'text' : ($part_type==2 ? 'message' : 'other');
+      $o_part->encoding = strtolower(iml_GetPartEncodingString($structure, $part));
+      $o_part->charset = iml_GetPartCharset($structure, $part);
+      }
+      
+    // TODO: Add caching for message parts
+
+    if ($print)
+      {
+      iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, $part, ($o_part->encoding=='base64'?3:2));
+      $body = TRUE;
+      }
+    else
+      {
+      $body = iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, $part, 1);
+
+      // decode part body
+      if ($o_part->encoding=='base64' || $o_part->encoding=='quoted-printable')
+        $body = $this->mime_decode($body, $o_part->encoding);
+
+      // convert charset (if text or message part)
+      if ($o_part->ctype_primary=='text' || $o_part->ctype_primary=='message')
+        {
+        // assume ISO-8859-1 if no charset specified
+        if (empty($o_part->charset))
+          $o_part->charset = 'ISO-8859-1';
+
+        $body = rcube_charset_convert($body, $o_part->charset);
+        }
+      }
 
     return $body;
     }
 
 
-  function get_raw_body($uid)
+  /**
+   * Fetch message body of a specific message from the server
+   *
+   * @param  int    Message UID
+   * @return Message/part body
+   * @see    ::get_message_part()
+   */
+  function &get_body($uid, $part=1)
+    {
+    return $this->get_message_part($uid, $part);
+    }
+
+
+  /**
+   * Returns the whole message source as string
+   *
+   * @param int  Message UID
+   * @return Message source string
+   */
+  function &get_raw_body($uid)
     {
     if (!($msg_id = $this->_uid2id($uid)))
       return FALSE;
@@ -808,21 +1167,45 @@
 
     return $body;    
     }
+    
+
+  /**
+   * Sends the whole message source to stdout
+   *
+   * @param int  Message UID
+   */ 
+  function print_raw_body($uid)
+    {
+    if (!($msg_id = $this->_uid2id($uid)))
+      return FALSE;
+
+	print iil_C_FetchPartHeader($this->conn, $this->mailbox, $msg_id, NULL);
+	flush();
+	iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, NULL, 2);
+    }
 
 
-  // set message flag to one or several messages
-  // possible flgs are: SEEN, DELETED, RECENT, ANSWERED, DRAFT
+  /**
+   * Set message flag to one or several messages
+   *
+   * @param mixed  Message UIDs as array or as comma-separated string
+   * @param string Flag to set: SEEN, UNDELETED, DELETED, RECENT, ANSWERED, DRAFT
+   * @return True on success, False on failure
+   */
   function set_flag($uids, $flag)
     {
     $flag = strtoupper($flag);
     $msg_ids = array();
     if (!is_array($uids))
-      $uids = array($uids);
+      $uids = explode(',',$uids);
       
-    foreach ($uids as $uid)
+    foreach ($uids as $uid) {
       $msg_ids[$uid] = $this->_uid2id($uid);
+    }
       
-    if ($flag=='UNSEEN')
+    if ($flag=='UNDELETED')
+      $result = iil_C_Undelete($this->conn, $this->mailbox, join(',', array_values($msg_ids)));
+    else if ($flag=='UNSEEN')
       $result = iil_C_Unseen($this->conn, $this->mailbox, join(',', array_values($msg_ids)));
     else
       $result = iil_C_Flag($this->conn, $this->mailbox, join(',', array_values($msg_ids)), $flag);
@@ -861,11 +1244,12 @@
 
 
   // append a mail message (source) to a specific mailbox
-  function save_message($mbox, $message)
+  function save_message($mbox_name, &$message)
     {
-    $mailbox = $this->_mod_mailbox($mbox);
+    $mbox_name = stripslashes($mbox_name);
+    $mailbox = $this->_mod_mailbox($mbox_name);
 
-    // make shure mailbox exists
+    // make sure mailbox exists
     if (in_array($mailbox, $this->_list_mailboxes()))
       $saved = iil_C_Append($this->conn, $mailbox, $message);
 
@@ -882,13 +1266,20 @@
   // move a message from one mailbox to another
   function move_message($uids, $to_mbox, $from_mbox='')
     {
+    $to_mbox = stripslashes($to_mbox);
+    $from_mbox = stripslashes($from_mbox);
     $to_mbox = $this->_mod_mailbox($to_mbox);
     $from_mbox = $from_mbox ? $this->_mod_mailbox($from_mbox) : $this->mailbox;
 
-    // make shure mailbox exists
+    // make sure mailbox exists
     if (!in_array($to_mbox, $this->_list_mailboxes()))
-      return FALSE;
-    
+      {
+      if (in_array(strtolower($to_mbox), $this->default_folders))
+        $this->create_mailbox($to_mbox, TRUE);
+      else
+        return FALSE;
+      }
+
     // convert the list of uids to array
     $a_uids = is_string($uids) ? explode(',', $uids) : (is_array($uids) ? $uids : NULL);
     
@@ -919,8 +1310,8 @@
       $start_index = 100000;
       foreach ($a_uids as $uid)
         {
-        $index = array_search($uid, $a_cache_index);
-        $start_index = min($index, $start_index);
+        if(($index = array_search($uid, $a_cache_index)) !== FALSE)
+	  $start_index = min($index, $start_index);
         }
 
       // clear cache from the lowest index on
@@ -932,9 +1323,10 @@
 
 
   // mark messages as deleted and expunge mailbox
-  function delete_message($uids, $mbox='')
+  function delete_message($uids, $mbox_name='')
     {
-    $mailbox = $mbox ? $this->_mod_mailbox($mbox) : $this->mailbox;
+    $mbox_name = stripslashes($mbox_name);
+    $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
 
     // convert the list of uids to array
     $a_uids = is_string($uids) ? explode(',', $uids) : (is_array($uids) ? $uids : NULL);
@@ -979,9 +1371,10 @@
 
 
   // clear all messages in a specific mailbox
-  function clear_mailbox($mbox=NULL)
+  function clear_mailbox($mbox_name=NULL)
     {
-    $mailbox = !empty($mbox) ? $this->_mod_mailbox($mbox) : $this->mailbox;
+    $mbox_name = stripslashes($mbox_name);
+    $mailbox = !empty($mbox_name) ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
     $msg_count = $this->_messagecount($mailbox, 'ALL');
     
     if ($msg_count>0)
@@ -1005,9 +1398,10 @@
 
 
   // send IMAP expunge command and clear cache
-  function expunge($mbox='', $clear_cache=TRUE)
+  function expunge($mbox_name='', $clear_cache=TRUE)
     {
-    $mailbox = $mbox ? $this->_mod_mailbox($mbox) : $this->mailbox;
+    $mbox_name = stripslashes($mbox_name);
+    $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
     return $this->_expunge($mailbox, $clear_cache);
     }
 
@@ -1032,7 +1426,12 @@
    * --------------------------------*/
 
 
-  // return an array with all folders available in IMAP server
+  /**
+   * Get a list of all folders available on the IMAP server
+   * 
+   * @param string IMAP root dir
+   * @return array Inbdexed array with folder names 
+   */
   function list_unsubscribed($root='')
     {
     static $sa_unsubscribed;
@@ -1044,9 +1443,9 @@
     $a_mboxes = iil_C_ListMailboxes($this->conn, $this->_mod_mailbox($root), '*');
 
     // modify names with root dir
-    foreach ($a_mboxes as $mbox)
+    foreach ($a_mboxes as $mbox_name)
       {
-      $name = $this->_mod_mailbox($mbox, 'out');
+      $name = $this->_mod_mailbox($mbox_name, 'out');
       if (strlen($name))
         $a_folders[] = $name;
       }
@@ -1066,40 +1465,51 @@
     if ($this->get_capability('QUOTA'))
       {
       $result = iil_C_GetQuota($this->conn);
-      return sprintf("%.2fMB / %.2fMB (%.0f%%)", $result["used"] / 1000.0, $result["total"] / 1000.0, $result["percent"]);
+      if ($result["total"])
+        return sprintf("%.2fMB / %.2fMB (%.0f%%)", $result["used"] / 1000.0, $result["total"] / 1000.0, $result["percent"]);       
       }
-    else
-      return 'unknown';
+
+    return FALSE;
     }
 
 
-  // subscribe to a specific mailbox(es)
-  function subscribe($mbox, $mode='subscribe')
+  /**
+   * subscribe to a specific mailbox(es)
+   */ 
+  function subscribe($mbox_name, $mode='subscribe')
     {
-    if (is_array($mbox))
-      $a_mboxes = $mbox;
-    else if (is_string($mbox) && strlen($mbox))
-      $a_mboxes = explode(',', $mbox);
+    if (is_array($mbox_name))
+      $a_mboxes = $mbox_name;
+    else if (is_string($mbox_name) && strlen($mbox_name))
+      $a_mboxes = explode(',', $mbox_name);
     
     // let this common function do the main work
     return $this->_change_subscription($a_mboxes, 'subscribe');
     }
 
 
-  // unsubscribe mailboxes
-  function unsubscribe($mbox)
+  /**
+   * unsubscribe mailboxes
+   */
+  function unsubscribe($mbox_name)
     {
-    if (is_array($mbox))
-      $a_mboxes = $mbox;
-    else if (is_string($mbox) && strlen($mbox))
-      $a_mboxes = explode(',', $mbox);
+    if (is_array($mbox_name))
+      $a_mboxes = $mbox_name;
+    else if (is_string($mbox_name) && strlen($mbox_name))
+      $a_mboxes = explode(',', $mbox_name);
 
     // let this common function do the main work
     return $this->_change_subscription($a_mboxes, 'unsubscribe');
     }
 
 
-  // create a new mailbox on the server and register it in local cache
+  /**
+   * Create a new mailbox on the server and register it in local cache
+   *
+   * @param string  New mailbox name (as utf-7 string)
+   * @param boolean True if the new mailbox should be subscribed
+   * @param string  Name of the created mailbox, false on error
+   */
   function create_mailbox($name, $subscribe=FALSE)
     {
     $result = FALSE;
@@ -1107,50 +1517,90 @@
     // replace backslashes
     $name = preg_replace('/[\\\]+/', '-', $name);
 
-    $name_enc = UTF7EncodeString($name);
-
     // reduce mailbox name to 100 chars
-    $name_enc = substr($name_enc, 0, 100);
+    $name = substr($name, 0, 100);
 
-    $abs_name = $this->_mod_mailbox($name_enc);
+    $abs_name = $this->_mod_mailbox($name);
     $a_mailbox_cache = $this->get_cache('mailboxes');
-        
-    if (strlen($abs_name) && (!is_array($a_mailbox_cache) || !in_array($abs_name, $a_mailbox_cache)))
+
+    if (strlen($abs_name) && (!is_array($a_mailbox_cache) || !in_array_nocase($abs_name, $a_mailbox_cache)))
       $result = iil_C_CreateFolder($this->conn, $abs_name);
 
-    // update mailboxlist cache
-    if ($result && $subscribe)
-      $this->subscribe($name_enc);
+    // try to subscribe it
+    if ($subscribe)
+      $this->subscribe($name);
 
     return $result ? $name : FALSE;
     }
 
 
-  // set a new name to an existing mailbox
-  function rename_mailbox($mbox, $new_name)
+  /**
+   * Set a new name to an existing mailbox
+   *
+   * @param string Mailbox to rename (as utf-7 string)
+   * @param string New mailbox name (as utf-7 string)
+   * @param string Name of the renames mailbox, false on error
+   */
+  function rename_mailbox($mbox_name, $new_name)
     {
-    // not implemented yet
+    $result = FALSE;
+
+    // replace backslashes
+    $name = preg_replace('/[\\\]+/', '-', $new_name);
+        
+    // encode mailbox name and reduce it to 100 chars
+    $name = substr($new_name, 0, 100);
+
+    // make absolute path
+    $mailbox = $this->_mod_mailbox($mbox_name);
+    $abs_name = $this->_mod_mailbox($name);
+    
+    // check if mailbox is subscribed
+    $a_subscribed = $this->_list_mailboxes();
+    $subscribed = in_array($mailbox, $a_subscribed);
+    
+    // unsubscribe folder
+    if ($subscribed)
+      iil_C_UnSubscribe($this->conn, $mailbox);
+
+    if (strlen($abs_name))
+      $result = iil_C_RenameFolder($this->conn, $mailbox, $abs_name);
+
+    // clear cache
+    if ($result)
+      {
+      $this->clear_message_cache($mailbox.'.msg');
+      $this->clear_cache('mailboxes');      
+      }
+
+    // try to subscribe it
+    if ($result && $subscribed)
+      iil_C_Subscribe($this->conn, $abs_name);
+
+    return $result ? $name : FALSE;
     }
 
 
-  // remove mailboxes from server
-  function delete_mailbox($mbox)
+  /**
+   * remove mailboxes from server
+   */
+  function delete_mailbox($mbox_name)
     {
     $deleted = FALSE;
 
-    if (is_array($mbox))
-      $a_mboxes = $mbox;
-    else if (is_string($mbox) && strlen($mbox))
-      $a_mboxes = explode(',', $mbox);
+    if (is_array($mbox_name))
+      $a_mboxes = $mbox_name;
+    else if (is_string($mbox_name) && strlen($mbox_name))
+      $a_mboxes = explode(',', $mbox_name);
 
     if (is_array($a_mboxes))
-      foreach ($a_mboxes as $mbox)
+      foreach ($a_mboxes as $mbox_name)
         {
-        $mailbox = $this->_mod_mailbox($mbox);
+        $mailbox = $this->_mod_mailbox($mbox_name);
 
         // unsubscribe mailbox before deleting
         iil_C_UnSubscribe($this->conn, $mailbox);
-        
+
         // send delete command to server
         $result = iil_C_DeleteFolder($this->conn, $mailbox);
         if ($result>=0)
@@ -1167,6 +1617,28 @@
     return $deleted;
     }
 
+
+  /**
+   * Create all folders specified as default
+   */
+  function create_default_folders()
+    {
+    $a_folders = iil_C_ListMailboxes($this->conn, $this->_mod_mailbox(''), '*');
+    $a_subscribed = iil_C_ListSubscribed($this->conn, $this->_mod_mailbox(''), '*');
+    
+    // create default folders if they do not exist
+    foreach ($this->default_folders as $folder)
+      {
+      $abs_name = $this->_mod_mailbox($folder);
+      if (!in_array_nocase($abs_name, $a_subscribed))
+        {
+        if (!in_array_nocase($abs_name, $a_folders))
+          $this->create_mailbox($folder, TRUE);
+        else
+          $this->subscribe($folder);
+        }
+      }
+    }
 
 
 
@@ -1292,7 +1764,7 @@
       {
       $this->db->query(
         "UPDATE ".get_table_name('cache')."
-         SET    created=now(),
+         SET    created=".$this->db->now().",
                 data=?
          WHERE  user_id=?
          AND    cache_key=?",
@@ -1306,7 +1778,7 @@
       $this->db->query(
         "INSERT INTO ".get_table_name('cache')."
          (created, user_id, cache_key, data)
-         VALUES (now(), ?, ?, ?)",
+         VALUES (".$this->db->now().", ?, ?, ?)",
         $_SESSION['user_id'],
         $key,
         $data);
@@ -1350,14 +1822,14 @@
       $header = iil_C_FetchHeader($this->conn, $mailbox, "$msg_count");
       $cache_uid = array_pop($cache_index);
       
-      // uids of highes message matches -> cache seems OK
+      // uids of highest message matches -> cache seems OK
       if ($cache_uid == $header->uid)
         return 1;
 
       // cache is dirty
       return -1;
       }
-    // if cache count differs less that 10% report as dirty
+    // if cache count differs less than 10% report as dirty
     else if (abs($msg_count - $cache_count) < $msg_count/10)
       return -1;
     else
@@ -1400,18 +1872,16 @@
     }
 
 
-  function get_cached_message($key, $uid, $body=FALSE)
+  function &get_cached_message($key, $uid, $struct=false)
     {
     if (!$this->caching_enabled)
       return FALSE;
 
     $internal_key = '__single_msg';
-    if ($this->caching_enabled && (!isset($this->cache[$internal_key][$uid]) || $body))
+    if ($this->caching_enabled && (!isset($this->cache[$internal_key][$uid]) ||
+        ($struct && empty($this->cache[$internal_key][$uid]->structure))))
       {
-      $sql_select = "idx, uid, headers";
-      if ($body)
-        $sql_select .= ", body";
-      
+      $sql_select = "idx, uid, headers" . ($struct ? ", structure" : '');
       $sql_result = $this->db->query(
         "SELECT $sql_select
          FROM ".get_table_name('messages')."
@@ -1421,14 +1891,12 @@
         $_SESSION['user_id'],
         $key,
         $uid);
-      
+
       if ($sql_arr = $this->db->fetch_assoc($sql_result))
         {
-        $headers = unserialize($sql_arr['headers']);
-        if (is_object($headers) && !empty($sql_arr['body']))
-          $headers->body = $sql_arr['body'];
-
-        $this->cache[$internal_key][$uid] = $headers;
+        $this->cache[$internal_key][$uid] = unserialize($sql_arr['headers']);
+        if (is_object($this->cache[$internal_key][$uid]) && !empty($sql_arr['structure']))
+          $this->cache[$internal_key][$uid]->structure = unserialize($sql_arr['structure']);
         }
       }
 
@@ -1439,6 +1907,10 @@
   function get_message_cache_index($key, $force=FALSE, $sort_col='idx', $sort_order='ASC')
     {
     static $sa_message_index = array();
+    
+    // empty key -> empty array
+    if (empty($key))
+      return array();
     
     if (!empty($sa_message_index[$key]) && !$force)
       return $sa_message_index[$key];
@@ -1460,25 +1932,55 @@
     }
 
 
-  function add_message_cache($key, $index, $headers)
+  function add_message_cache($key, $index, $headers, $struct=null)
     {
-    if (!is_object($headers) || empty($headers->uid))
+    if (empty($key) || !is_object($headers) || empty($headers->uid))
       return;
+      
+    // check for an existing record (probly headers are cached but structure not)
+    $sql_result = $this->db->query(
+        "SELECT message_id
+         FROM ".get_table_name('messages')."
+         WHERE  user_id=?
+         AND    cache_key=?
+         AND    uid=?
+         AND    del<>1",
+        $_SESSION['user_id'],
+        $key,
+        $headers->uid);
 
-    $this->db->query(
-      "INSERT INTO ".get_table_name('messages')."
-       (user_id, del, cache_key, created, idx, uid, subject, ".$this->db->quoteIdentifier('from').", ".$this->db->quoteIdentifier('to').", cc, date, size, headers)
-       VALUES (?, 0, ?, now(), ?, ?, ?, ?, ?, ?, ".$this->db->fromunixtime($headers->timestamp).", ?, ?)",
-      $_SESSION['user_id'],
-      $key,
-      $index,
-      $headers->uid,
-      substr($this->decode_header((string)$headers->subject, TRUE), 0, 128),
-      substr($this->decode_header((string)$headers->from, TRUE), 0, 128),
-      substr($this->decode_header((string)$headers->to, TRUE), 0, 128),
-      substr($this->decode_header((string)$headers->cc, TRUE), 0, 128),
-      (int)$headers->size,
-      serialize($headers));
+    // update cache record
+    if ($sql_arr = $this->db->fetch_assoc($sql_result))
+      {
+      $this->db->query(
+        "UPDATE ".get_table_name('messages')."
+         SET   idx=?, headers=?, structure=?
+         WHERE message_id=?",
+        $index,
+        serialize($headers),
+        is_object($struct) ? serialize($struct) : NULL,
+        $sql_arr['message_id']
+        );
+      }
+    else  // insert new record
+      {
+      $this->db->query(
+        "INSERT INTO ".get_table_name('messages')."
+         (user_id, del, cache_key, created, idx, uid, subject, ".$this->db->quoteIdentifier('from').", ".$this->db->quoteIdentifier('to').", cc, date, size, headers, structure)
+         VALUES (?, 0, ?, ".$this->db->now().", ?, ?, ?, ?, ?, ?, ".$this->db->fromunixtime($headers->timestamp).", ?, ?, ?)",
+        $_SESSION['user_id'],
+        $key,
+        $index,
+        $headers->uid,
+        (string)substr($this->decode_header($headers->subject, TRUE), 0, 128),
+        (string)substr($this->decode_header($headers->from, TRUE), 0, 128),
+        (string)substr($this->decode_header($headers->to, TRUE), 0, 128),
+        (string)substr($this->decode_header($headers->cc, TRUE), 0, 128),
+        (int)$headers->size,
+        serialize($headers),
+        is_object($struct) ? serialize($struct) : NULL
+        );
+      }
     }
     
     
@@ -1519,7 +2021,7 @@
     {
     $a = $this->_parse_address_list($input);
     $out = array();
-
+    
     if (!is_array($a))
       return $out;
 
@@ -1555,9 +2057,14 @@
     
     return $str;
     }
-    
-    
-  function decode_mime_string($input)
+
+
+  /**
+   * Decode a mime-encoded string to internal charset
+   *
+   * @access static
+   */
+  function decode_mime_string($input, $recursive=false)
     {
     $out = '';
 
@@ -1578,11 +2085,17 @@
 
       return $out;
       }
-    else
-      return $input;
+      
+    // no encoding information, defaults to what is specified in the class header
+    return rcube_charset_convert($input, 'ISO-8859-1');
     }
 
 
+  /**
+   * Decode a part of a mime-encoded string
+   *
+   * @access static
+   */
   function _decode_mime_string_part($str)
     {
     $a = explode('?', $str);
@@ -1655,8 +2168,10 @@
     if (is_array($ctype_param) && !empty($ctype_param['charset']))
       return rcube_charset_convert($body, $ctype_param['charset']);
 
-    return $body;
+    // defaults to what is specified in the class header
+    return rcube_charset_convert($body,  'ISO-8859-1');
     }
+
 
 
 
@@ -1665,17 +2180,17 @@
    * --------------------------------*/
 
 
-  function _mod_mailbox($mbox, $mode='in')
+  function _mod_mailbox($mbox_name, $mode='in')
     {
-    if ((!empty($this->root_ns) && $this->root_ns == $mbox) || ($mbox == 'INBOX' && $mode == 'in'))
-      return $mbox;
+    if ((!empty($this->root_ns) && $this->root_ns == $mbox_name) || $mbox_name == 'INBOX')
+      return $mbox_name;
 
     if (!empty($this->root_dir) && $mode=='in') 
-      $mbox = $this->root_dir.$this->delimiter.$mbox;
+      $mbox_name = $this->root_dir.$this->delimiter.$mbox_name;
     else if (strlen($this->root_dir) && $mode=='out') 
-      $mbox = substr($mbox, strlen($this->root_dir)+1);
+      $mbox_name = substr($mbox_name, strlen($this->root_dir)+1);
 
-    return $mbox;
+    return $mbox_name;
     }
 
 
@@ -1689,8 +2204,8 @@
       {
       if ($folder{0}=='.')
       	continue;
-      	
-      if (($p = array_search(strtolower($folder), $this->default_folders))!==FALSE)
+
+      if (($p = array_search(strtolower($folder), $this->default_folders_lc))!==FALSE)
       	$a_defaults[$p] = $folder;
       else
         $a_out[] = $folder;
@@ -1702,16 +2217,33 @@
     return array_merge($a_defaults, $a_out);
     }
 
-
-  function _uid2id($uid, $mbox=NULL)
+  function get_id($uid, $mbox_name=NULL) 
     {
-    if (!$mbox)
-      $mbox = $this->mailbox;
-      
-    if (!isset($this->uid_id_map[$mbox][$uid]))
-      $this->uid_id_map[$mbox][$uid] = iil_C_UID2ID($this->conn, $mbox, $uid);
+      return $this->_uid2id($uid, $mbox_name);
+    }
+  
+  function get_uid($id,$mbox_name=NULL)
+    {
+      return $this->_id2uid($id, $mbox_name);
+    }
 
-    return $this->uid_id_map[$mbox][$uid];
+  function _uid2id($uid, $mbox_name=NULL)
+    {
+    if (!$mbox_name)
+      $mbox_name = $this->mailbox;
+      
+    if (!isset($this->uid_id_map[$mbox_name][$uid]))
+      $this->uid_id_map[$mbox_name][$uid] = iil_C_UID2ID($this->conn, $mbox_name, $uid);
+
+    return $this->uid_id_map[$mbox_name][$uid];
+    }
+
+  function _id2uid($id, $mbox_name=NULL)
+    {
+    if (!$mbox_name)
+      $mbox_name = $this->mailbox;
+      
+    return iil_C_ID2UID($this->conn, $mbox_name, $id);
     }
 
 
@@ -1748,9 +2280,9 @@
     $updated = FALSE;
     
     if (is_array($a_mboxes))
-      foreach ($a_mboxes as $i => $mbox)
+      foreach ($a_mboxes as $i => $mbox_name)
         {
-        $mailbox = $this->_mod_mailbox($mbox);
+        $mailbox = $this->_mod_mailbox($mbox_name);
         $a_mboxes[$i] = $mailbox;
 
         if ($mode=='subscribe')
@@ -1784,10 +2316,10 @@
 
 
   // increde/decrese messagecount for a specific mailbox
-  function _set_messagecount($mbox, $mode, $increment)
+  function _set_messagecount($mbox_name, $mode, $increment)
     {
     $a_mailbox_cache = FALSE;
-    $mailbox = $mbox ? $mbox : $this->mailbox;
+    $mailbox = $mbox_name ? $mbox_name : $this->mailbox;
     $mode = strtoupper($mode);
 
     $a_mailbox_cache = $this->get_cache('messagecount');
@@ -1810,10 +2342,10 @@
 
 
   // remove messagecount of a specific mailbox from cache
-  function _clear_messagecount($mbox='')
+  function _clear_messagecount($mbox_name='')
     {
     $a_mailbox_cache = FALSE;
-    $mailbox = $mbox ? $mbox : $this->mailbox;
+    $mailbox = $mbox_name ? $mbox_name : $this->mailbox;
 
     $a_mailbox_cache = $this->get_cache('messagecount');
 
@@ -1825,16 +2357,38 @@
     }
 
 
+  // split RFC822 header string into an associative array
+  function _parse_headers($headers)
+    {
+    $a_headers = array();
+    $lines = explode("\n", $headers);
+    $c = count($lines);
+    for ($i=0; $i<$c; $i++)
+      {
+      if ($p = strpos($lines[$i], ': '))
+        {
+        $field = strtolower(substr($lines[$i], 0, $p));
+        $value = trim(substr($lines[$i], $p+1));
+        if (!empty($value))
+          $a_headers[$field] = $value;
+        }
+      }
+    
+    return $a_headers;
+    }
+
+
   function _parse_address_list($str)
     {
     $a = $this->_explode_quoted_string(',', $str);
     $result = array();
-
+    
     foreach ($a as $key => $val)
       {
       $val = str_replace("\"<", "\" <", $val);
-      $sub_a = $this->_explode_quoted_string(' ', $val);
-      
+      $sub_a = $this->_explode_quoted_string(' ', $this->decode_header($val));
+      $result[$key]['name'] = '';
+
       foreach ($sub_a as $k => $v)
         {
         if ((strpos($v, '@') > 0) && (strpos($v, '.') > 0)) 
@@ -1844,9 +2398,7 @@
         }
         
       if (empty($result[$key]['name']))
-        $result[$key]['name'] = $result[$key]['address'];
-        
-      $result[$key]['name'] = $this->decode_header($result[$key]['name']);
+        $result[$key]['name'] = $result[$key]['address'];        
       }
     
     return $result;
@@ -1871,10 +2423,109 @@
   }
 
 
+/**
+ * Class representing a message part
+ */
+class rcube_message_part
+{
+  var $mime_id = '';
+  var $ctype_primary = 'text';
+  var $ctype_secondary = 'plain';
+  var $mimetype = 'text/plain';
+  var $disposition = '';
+  var $encoding = '8bit';
+  var $charset = '';
+  var $size = 0;
+  var $headers = array();
+  var $d_parameters = array();
+  var $ctype_parameters = array();
+
+}
 
 
+/**
+ * rcube_header_sorter
+ * 
+ * Class for sorting an array of iilBasicHeader objects in a predetermined order.
+ *
+ * @author Eric Stadtherr
+ */
+class rcube_header_sorter
+{
+   var $sequence_numbers = array();
+   
+   /**
+    * set the predetermined sort order.
+    *
+    * @param array $seqnums numerically indexed array of IMAP message sequence numbers
+    */
+   function set_sequence_numbers($seqnums)
+   {
+      $this->sequence_numbers = $seqnums;
+   }
+ 
+   /**
+    * sort the array of header objects
+    *
+    * @param array $headers array of iilBasicHeader objects indexed by UID
+    */
+   function sort_headers(&$headers)
+   {
+      /*
+       * uksort would work if the keys were the sequence number, but unfortunately
+       * the keys are the UIDs.  We'll use uasort instead and dereference the value
+       * to get the sequence number (in the "id" field).
+       * 
+       * uksort($headers, array($this, "compare_seqnums")); 
+       */
+       uasort($headers, array($this, "compare_seqnums"));
+   }
+ 
+   /**
+    * get the position of a message sequence number in my sequence_numbers array
+    *
+    * @param integer $seqnum message sequence number contained in sequence_numbers  
+    */
+   function position_of($seqnum)
+   {
+      $c = count($this->sequence_numbers);
+      for ($pos = 0; $pos <= $c; $pos++)
+      {
+         if ($this->sequence_numbers[$pos] == $seqnum)
+            return $pos;
+      }
+      return -1;
+   }
+ 
+   /**
+    * Sort method called by uasort()
+    */
+   function compare_seqnums($a, $b)
+   {
+      // First get the sequence number from the header object (the 'id' field).
+      $seqa = $a->id;
+      $seqb = $b->id;
+      
+      // then find each sequence number in my ordered list
+      $posa = $this->position_of($seqa);
+      $posb = $this->position_of($seqb);
+      
+      // return the relative position as the comparison value
+      $ret = $posa - $posb;
+      return $ret;
+   }
+}
 
-function quoted_printable_encode($input="", $line_max=76, $space_conv=false)
+
+/**
+ * Add quoted-printable encoding to a given string
+ * 
+ * @param string  $input      string to encode
+ * @param int     $line_max   add new line after this number of characters
+ * @param boolena $space_conf true if spaces should be converted into =20
+ * @return encoded string
+ */
+function quoted_printable_encode($input, $line_max=76, $space_conv=false)
   {
   $hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F');
   $lines = preg_split("/(?:\r\n|\r|\n)/", $input);
@@ -1931,4 +2582,5 @@
   return trim($output);
   }
 
+
 ?>

--
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