diff --git a/inc/log_caldav_action.php b/inc/log_caldav_action.php
new file mode 100644
index 00000000..9c55a159
--- /dev/null
+++ b/inc/log_caldav_action.php
@@ -0,0 +1,36 @@
+<?php
+/**
+* Allows logging of CalDAV actions (PUT/DELETE) for possible export or sync
+* through some other glue.
+*
+* @package   davical
+* @category Technical
+* @subpackage   logging
+* @author    Andrew McMillan <andrew@morphoss.com>
+* @copyright Morphoss Ltd
+* @license   http://gnu.org/copyleft/gpl.html GNU GPL v2
+*/
+
+/**
+* Log the action
+* @param string $action_type INSERT / UPDATE or DELETE
+* @param string $uid The UID of the modified item
+* @param integer $user_no The user owning the containing collection.
+* @param integer $collection_id The ID of the containing collection.
+* @param string $dav_name The DAV path of the item, relative to the DAViCal base path
+*/
+function log_caldav_action( $action_type, $uid, $user_no, $collection_id, $dav_name ) {
+  global $c;
+
+  $logline = sprintf( '%s %s %s %s %s %s', gmdate('Ymd"T"HMS"Z"'), $action_type, $uid, $user_no, $collection_id, $dav_name );
+  if ( !isset($c->action_log_name) ) {
+    error_log( $logline );
+    return;
+  }
+
+  $logline .= "\n";
+
+  $logfile = fopen( $c->action_log_name, "a+" );
+  fwrite( $logfile, $logline );
+  fclose($logfile);
+}