- Workaround for setting charset in case of malformed bodystructure response (#1487700)

CHANGELOG

@@ -4,6 +4,7 @@ CHANGELOG Roundcube Webmail
 - Fix login redirect issues (#1487686)
 - Require PHP 5.2.1 or greater
 - Fix %h/%z variables in username_domain option (#1487701)
+- Workaround for setting charset in case of malformed bodystructure response (#1487700)
 
 RELEASE 0.5
 -----------

program/include/rcube_imap.php

@@ -2053,7 +2053,7 @@ class rcube_imap
                 return false;
         }
 
-        $struct = &$this->_structure_part($structure);
+        $struct = &$this->_structure_part($structure, 0, '', $headers);
         $struct->headers = get_object_vars($headers);
 
         // don't trust given content-type
@@ -2185,6 +2185,11 @@ class rcube_imap
                 $struct->charset = $struct->ctype_parameters['charset'];
         }
 
+        // #1487700: workaround for lack of charset in malformed structure
+        if (empty($struct->charset) && !empty($mime_headers) && $mime_headers->charset) {
+            $struct->charset = $mime_headers->charset;
+        }
+
         // read content encoding
         if (!empty($part[5]) && $part[5]!='NIL') {
             $struct->encoding = strtolower($part[5]);