localise links to private photos inside messages

include/conversation.php

@@ -4,6 +4,28 @@
  * Render actions localized
  */
 function localize_item(&$item){
+
+	$Text = $item['body'];
+	$saved_image = '';
+	$img_start = strpos($Text,'[img]data:');
+	$img_end = strpos($Text,'[/img]');
+
+	if($img_start !== false && $img_end !== false && $img_end > $img_start) {
+		$start_fragment = substr($Text,0,$img_start);
+		$img_start += strlen('[img]');
+		$saved_image = substr($Text,$img_start,$img_end - $img_start);
+		$end_fragment = substr($Text,$img_end + strlen('[/img]'));		
+		$Text = $start_fragment . '[!#saved_image#!]' . $end_fragment;
+		$search = '/\[url\=(.*?)\]\[!#saved_image#!\]\[\/url\]' . '/is';
+		$replace = '[url=' . z_path() . '/redir/' . $item['contact-id'] 
+			. '?f=1&url=' . '$1' . '][!#saved_image#!][/url]' ;
+
+		$Text = preg_replace($search,$replace,$Text);
+
+		if(strlen($saved_image))
+			$item['body'] = str_replace('[!#saved_image#!]', '[img]' . $saved_image . '[/img]',$Text);
+	}
+
 	$xmlhead="<"."?xml version='1.0' encoding='UTF-8' ?".">";
 	if ($item['verb']=== ACTIVITY_LIKE || $item['verb']=== ACTIVITY_DISLIKE){