Add cache-buster to scripts and linked files in skin templates

program/include/main.inc

@@ -1023,17 +1023,16 @@ function write_log($name, $line)
  * @access private
  */
 function rcube_timer()
-  {
-  list($usec, $sec) = explode(" ", microtime());
-  return ((float)$usec + (float)$sec);
-  }
+{
+  return microtime(true);
+}
   
 
 /**
  * @access private
  */
 function rcube_print_time($timer, $label='Timer')
-  {
+{
   static $print_count = 0;
   
   $print_count++;
@@ -1044,7 +1043,7 @@ function rcube_print_time($timer, $label='Timer')
     $label = 'Timer '.$print_count;
   
   console(sprintf("%s: %0.4f sec", $label, $diff));
-  }
+}
 
 
 /**

program/include/rcube_html_page.php

@@ -55,7 +55,7 @@ class rcube_html_page
         static $sa_files = array();
         
         if (!preg_match('|^https?://|i', $file) && $file[0] != '/')
-          $file = $this->scripts_path . $file;
+          $file = $this->scripts_path . $file . (($fs = @filesize($this->scripts_path . $file)) ? '?s='.$fs : '');
 
         if (in_array($file, $sa_files)) {
             return;
@@ -249,10 +249,19 @@ class rcube_html_page
         $__page_header = $__page_footer = '';
 
         // correct absolute paths in images and other tags
-        $output = preg_replace('/(src|href|background)=(["\']?)(\/[a-z0-9_\-]+)/Ui', "\\1=\\2$base_path\\3", $output);
+        $output = preg_replace('!(src|href|background)=(["\']?)(/[a-z0-9_-]+)!i', "\\1=\\2$base_path\\3", $output);
+        $output = preg_replace_callback('!(src|href)=(["\']?)([a-z0-9/_.-]+.(css|js))(["\'\s>])!i', array($this, 'add_filesize'), $output);
         $output = str_replace('$__skin_path', $base_path, $output);
 
         echo rcube_charset_convert($output, 'UTF-8', $this->charset);
     }
+    
+    /**
+     * Callback function for preg_replace_callback in write()
+     */
+    public function add_filesize($matches)
+    {
+        return sprintf("%s=%s%s?s=%d%s", $matches[1], $matches[2], $matches[3], @filesize($matches[3]), $matches[5]);
+    }
 }
 

program/include/rcube_template.php

@@ -435,6 +435,7 @@ class rcube_template extends rcube_html_page
      */
     private function parse_with_globals($input)
     {
+        $GLOBALS['__version'] = Q(RCMAIL_VERSION);
         $GLOBALS['__comm_path'] = Q($this->app->comm_path);
         return preg_replace('/\$(__[a-z0-9_\-]+)/e', '$GLOBALS["\\1"]', $input);
     }