minor plugin fixes to protect against invalid/malformed plugins

darcs-hash:20050804235036-50fdc-1881a40da689bc5abbe608a2ce96a1ed192a43a4.gz

inc/parserutils.php

@@ -199,7 +199,7 @@ function p_get_parsermodes(){
     global $PARSER_MODES;
     $obj = null; 
     foreach($pluginlist as $p){
-      $obj =& plugin_load('syntax',$p);               //load plugin into $obj
+      if(!$obj =& plugin_load('syntax',$p)) continue; //attempt to load plugin into $obj
       $PARSER_MODES[$obj->getType()][] = "plugin_$p"; //register mode type
       //add to modes
       $modes[] = array(

inc/pluginutils.php

@@ -81,21 +81,17 @@ function &plugin_load($type,$name){
   }
 
   //try to load the wanted plugin file
-  if(!include_once(DOKU_PLUGIN."$name/$type.php")){
+  if(!@include_once(DOKU_PLUGIN."$name/$type.php")){
     list($plugin, $component) = preg_split("/_/",$name, 2);
-    if (!$component || !include_once(DOKU_PLUGIN."$plugin/$type/$component.php")) {
+    if (!$component || !@include_once(DOKU_PLUGIN."$plugin/$type/$component.php")) {
         return null;
     }
   }
 
-/* FIXME: chris: what's this for?
-  global $plugin_investigate_pluginorder;
-  if (!isset($plugin_investigate_pluginorder)) $plugin_investigate_pluginorder = array();
-  $plugin_investigate_pluginorder[] = $name;
-*/
-
   //construct class and instanciate
   $class = $type.'_plugin_'.$name;
+  if (!class_exists($class)) return null;
+  
   $DOKU_PLUGINS[$type][$name] = new $class;
   return $DOKU_PLUGINS[$type][$name];
 }

lib/plugins/info/syntax.php

@@ -107,7 +107,7 @@ class syntax_plugin_info extends DokuWiki_Syntax_Plugin {
 
         $plugins = plugin_list('syntax');
         foreach($plugins as $p){
-            $po =& plugin_load('syntax',$p);
+            if (!$po =& plugin_load('syntax',$p)) continue;
             $info = $po->getInfo();
 
             $renderer->doc .= '<li>';