Added correct charset support for message searching

program/include/rcube_imap.inc

@@ -827,13 +827,19 @@ class rcube_imap
    * @return array   search results as list of message ids
    * @access public
    */
-  function search($mbox_name='', $criteria='ALL', $str=NULL)
+  function search($mbox_name='', $criteria='ALL', $str=NULL, $charset=NULL)
     {
     $mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
     if ($str && $criteria)
       {
-      $criteria = 'CHARSET UTF-8 '.$criteria.' "'.UTF7EncodeString($str).'"';
-      return $this->_search_index($mailbox, $criteria);
+      $search = (!empty($charset) ? "CHARSET $charset " : '') . sprintf("%s {%d}\r\n%s", $criteria, strlen($str), $str);
+      $results = $this->_search_index($mailbox, $search);
+
+      // try search without charset (probably not supported by server)
+      if (empty($results))
+        $results = $this->_search_index($mailbox, "$criteria $str");
+      
+      return $results;
       }
     else
       return $this->_search_index($mailbox, $criteria);

program/steps/mail/search.inc

@@ -8,6 +8,7 @@
  |                                                                       |
  +-----------------------------------------------------------------------+
  | Author: Benjamin Smith <defitro@gmail.com>                            |
+ |         Thomas Bruederli <roundcube@gmail.com>                        |
  +-----------------------------------------------------------------------+
 
 */
@@ -18,6 +19,10 @@ $REMOTE_REQUEST = TRUE;
 $IMAP->set_page(1);
 $_SESSION['page'] = 1;
 
+// search query comes in with ISO encoding because javascript escape()
+// uses ISO-8859-1. Better handling for that will follow.
+$imap_charset = 'ISO-8859-1';
+
 // get search string
 $str = get_input_value('_search', RCUBE_INPUT_GET);
 $mbox = get_input_value('_mbox', RCUBE_INPUT_GET);
@@ -27,33 +32,33 @@ $search_request = md5($str);
 // Check the search string for type of search
 if (preg_match("/^from:/i", $str)) {
   list(,$srch) = explode(":", $str);
-  $search = $IMAP->search($mbox, "FROM" ,trim($srch));
+  $search = $IMAP->search($mbox, "HEADER FROM" ,trim($srch), $imap_charset);
   finish_search($mbox, $search);
 }
 else if (preg_match("/^to:/i", $str)) {
   list(,$srch) = explode(":", $str);
-  $search = $IMAP->search($mbox, "TO", trim($srch));
+  $search = $IMAP->search($mbox, "HEADER TO", trim($srch), $imap_charset);
   finish_search($mbox, $search);
 }
 else if (preg_match("/^cc:/i", $str)) {
   list(,$srch) = explode(":", $str);
-  $search = $IMAP->search($mbox, "CC", trim($srch));
+  $search = $IMAP->search($mbox, "HEADER CC", trim($srch), $imap_charset);
   finish_search($mbox, $search);
 }
 else if (preg_match("/^subject:/i", $str)) {
   list(,$srch) = explode(":", $str);
-  $search = $IMAP->search($mbox, "SUBJECT", trim($srch));
+  $search = $IMAP->search($mbox, "HEADER SUBJECT", trim($srch), $imap_charset);
   finish_search($mbox, $search);
 }
 else if (preg_match("/^body:/i", $str)) {
   list(,$srch) = explode(":", $str);
-  $search = $IMAP->search($mbox, "TEXT", trim($srch));
+  $search = $IMAP->search($mbox, "TEXT", trim($srch), $imap_charset);
   finish_search($mbox, $search);
 }
 // search in subject and sender by default
 else {
-  $search = $IMAP->search($mbox, "SUBJECT", trim($str));
-  $search2 = $IMAP->search($mbox, "FROM", trim($str));
+  $search = $IMAP->search($mbox, "HEADER SUBJECT", trim($str), $imap_charset);
+  $search2 = $IMAP->search($mbox, "HEADER FROM", trim($str), $imap_charset);
   finish_search($mbox, array_unique(array_merge($search, $search2)));
 }