classes/security/authorization/internal/PluginRequiredPolicy.inc.php

<?php
import('lib.pkp.classes.security.authorization.AuthorizationPolicy');

class PluginRequiredPolicy extends AuthorizationPolicy {

   var $_request;

   function PluginRequiredPolicy(&$request) {
      parent::AuthorizationPolicy();
      $this->_request =& $request;
   }

   //
   // Implement template methods from AuthorizationPolicy
   //
   function effect() {
      // Get the plugin request data.
      $category = $this->_request->getUserVar('category');
      $pluginName = $this->_request->getUserVar('plugin');

      // Load the plugin.
      $plugins =& PluginRegistry::loadCategory($category);
      $foundPlugin = null;
      foreach ($plugins as $plugin) { /* @var $plugin Plugin */
         if ($plugin->getName() == $pluginName) {
            $foundPlugin = $plugin;
            break;
         }
      }
      if (!is_a($foundPlugin, 'Plugin')) return AUTHORIZATION_DENY;

      // Add the plugin to the authorized context.
      $this->addAuthorizedContextObject(ASSOC_TYPE_PLUGIN, $foundPlugin);
      return AUTHORIZATION_PERMIT;
   }
}

?>