Fix including assets that exist only in minified version

plugins/jqueryui/jqueryui.php

@@ -55,10 +55,10 @@ class jqueryui extends rcube_plugin
             $lang_s = substr($_SESSION['language'], 0, 2);
 
             foreach ($jquery_ui_i18n as $package) {
-                if (self::asset_exists("js/i18n/jquery.ui.$package-$lang_l.js")) {
+                if (self::asset_exists("js/i18n/jquery.ui.$package-$lang_l.js", false)) {
                     $this->include_script("js/i18n/jquery.ui.$package-$lang_l.js");
                 }
-                else if (self::asset_exists("js/i18n/jquery.ui.$package-$lang_s.js")) {
+                else if ($lang_s != 'en' && self::asset_exists("js/i18n/jquery.ui.$package-$lang_s.js", false)) {
                     $this->include_script("js/i18n/jquery.ui.$package-$lang_s.js");
                 }
             }
@@ -143,12 +143,10 @@ class jqueryui extends rcube_plugin
     /**
      * Checks if an asset file exists in specified location (with assets_dir support)
      */
-    protected static function asset_exists($path)
+    protected static function asset_exists($path, $minified = true)
     {
-        $rcube      = rcube::get_instance();
-        $assets_dir = $rcube->config->get('assets_dir');
-        $full_path  = unslashify($assets_dir ?: INSTALL_PATH) . '/plugins/jqueryui/' . $path;
+        $rcube = rcube::get_instance();
 
-        return file_exists($full_path);
+        return $rcube->find_asset('/plugins/jqueryui/' . $path, $minified) !== null;
     }
 }

program/include/rcmail.php

@@ -1177,6 +1177,38 @@ class rcmail extends rcube
         self::write_log('userlogins', $message);
     }
 
+    /**
+     * Check if specified asset file exists
+     *
+     * @param string $path     Asset path
+     * @param bool   $minified Fallback to minified version of the file
+     *
+     * @return string Asset path if found (modified if minified file found)
+     */
+    public function find_asset($path, $minified = true)
+    {
+        if (empty($path)) {
+            return;
+        }
+
+        $assets_dir = $this->config->get('assets_dir');
+        $root_path  = unslashify($assets_dir ?: INSTALL_PATH) . '/';
+        $full_path  = $root_path . trim($path, '/');
+
+        if (file_exists($full_path)) {
+            return $path;
+        }
+
+        if ($minified && preg_match('/(?<!\.min)\.(js|css)$/', $path)) {
+            $path      = preg_replace('/\.(js|css)$/', '.min.\\1', $path);
+            $full_path = $root_path . trim($path, '/');
+
+            if (file_exists($full_path)) {
+                return $path;
+            }
+        }
+    }
+
     /**
      * Create a HTML table based on the given data
      *
@@ -2061,14 +2093,16 @@ class rcmail extends rcube
         );
 
         if ($path = $this->config->get('editor_css_location')) {
-            $config['content_css'] = $skin_path . $path;
+            if ($path = $this->find_asset($skin_path . $path)) {
+                $config['content_css'] = $path;
+            }
         }
 
         $this->output->add_label('selectimage', 'addimage', 'selectmedia', 'addmedia');
         $this->output->set_env('editor_config', $config);
 
         if ($path = $this->config->get('media_browser_css_location', 'program/resources/tinymce/browser.css')) {
-            if ($path != 'none') {
+            if ($path != 'none' && ($path = $this->find_asset($path))) {
                 $this->output->include_css($path);
             }
         }

program/include/rcmail_html_page.php

@@ -32,7 +32,8 @@ class rcmail_html_page extends rcmail_output_html
         self::reset(true);
 
         // load embed.css from skin folder (if exists)
-        if ($embed_css = $this->get_skin_file($this->config->get('embed_css_location', '/embed.css'))) {
+        $embed_css = $this->config->get('embed_css_location', '/embed.css');
+        if ($embed_css = $this->get_skin_file($embed_css, $path, null, true)) {
             $this->include_css($embed_css);
         }
         else {  // set default styles for warning blocks inside the attachment part frame

program/include/rcmail_output_html.php

@@ -398,10 +398,11 @@ EOF;
      * @param string $file       File name/path to resolve (starting with /)
      * @param string &$skin_path Reference to the base path of the matching skin
      * @param string $add_path   Additional path to search in
+     * @param bool   $minified   Fallback to a minified version of the file
      *
      * @return mixed Relative path to the requested file or False if not found
      */
-    public function get_skin_file($file, &$skin_path = null, $add_path = null)
+    public function get_skin_file($file, &$skin_path = null, $add_path = null, $minified = false)
     {
         $skin_paths = $this->skin_paths;
 
@@ -414,6 +415,14 @@ EOF;
             return $skin_path . $file;
         }
 
+        if ($minified && preg_match('/(?<!\.min)\.(js|css)$/', $file)) {
+            $file = preg_replace('/\.(js|css)$/', '.min.\\1', $file);
+
+            if ($skin_path = $this->find_file_path($file, $skin_paths)) {
+                return $skin_path . $file;
+            }
+        }
+
         return false;
     }