- additional_message_headers: allow unsetting headers, support plugin's config file (#1486268)

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG RoundCube Webmail
 ===========================
 
+- additional_message_headers: allow unsetting headers, support plugin's config file (#1486268)
 - Fix displaying of hidden directories in skins list (#1486301)
 - Fix open_basedir restriction error when reading skins list (#1486304)
 - Fix pasting from Office apps into html editor (#1486271)

plugins/additional_message_headers/additional_message_headers.php

@@ -3,22 +3,13 @@
 /**
  * Additional Message Headers
  *
- * Very simple plugin which will read additional headers for outgoing messages from the config file.
+ * Very simple plugin which will add additional headers to or remove them from outgoing messages.
  *
- * Enable the plugin in config/main.inc.php and add your desired headers.
- *
- * @version 1.0
+ * @version 1.1
  * @author Ziba Scott
  * @website http://roundcube.net
- * 
- * Example:
  *
- * $rcmail_config['additional_message_headers']['X-Remote-Browser'] = $_SERVER['HTTP_USER_AGENT'];
- * $rcmail_config['additional_message_headers']['X-Originating-IP'] = $_SERVER['REMOTE_ADDR'];
- * $rcmail_config['additional_message_headers']['X-RoundCube-Server'] = $_SERVER['SERVER_ADDR'];
- * if( isset( $_SERVER['MACHINE_NAME'] )) {
- *     $rcmail_config['additional_message_headers']['X-RoundCube-Server'] .= ' (' . $_SERVER['MACHINE_NAME'] . ')';
- * }
+ * See config.inc.php.disc 
  */
 class additional_message_headers extends rcube_plugin
 {
@@ -29,14 +20,22 @@ class additional_message_headers extends rcube_plugin
         $this->add_hook('outgoing_message_headers', array($this, 'message_headers'));
     }
 
-    function message_headers($args){
+    function message_headers($args)
+    {
+	$this->load_config();
 
         // additional email headers
         $additional_headers = rcmail::get_instance()->config->get('additional_message_headers',array());
         foreach($additional_headers as $header=>$value){
-            $args['headers'][$header] = $value;
+            if (null === $value) {
+                unset($args['headers'][$header]);
+            } else {
+                $args['headers'][$header] = $value;
+            }
         }
 
         return $args;
     }
 }
+
+?>