Civi/API/Provider/ReflectionProvider.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | CiviCRM version 4.4                                                |
   5  +--------------------------------------------------------------------+
   6  | Copyright CiviCRM LLC (c) 2004-2013                                |
   7  +--------------------------------------------------------------------+
   8  | This file is a part of CiviCRM.                                    |
   9  |                                                                    |
  10  | CiviCRM is free software; you can copy, modify, and distribute it  |
  11  | under the terms of the GNU Affero General Public License           |
  12  | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
  13  |                                                                    |
  14  | CiviCRM is distributed in the hope that it will be useful, but     |
  15  | WITHOUT ANY WARRANTY; without even the implied warranty of         |
  16  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
  17  | See the GNU Affero General Public License for more details.        |
  18  |                                                                    |
  19  | You should have received a copy of the GNU Affero General Public   |
  20  | License and the CiviCRM Licensing Exception along                  |
  21  | with this program; if not, contact CiviCRM LLC                     |
  22  | at info[AT]civicrm[DOT]org. If you have questions about the        |
  23  | GNU Affero General Public License or the licensing of CiviCRM,     |
  24  | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
  25  +--------------------------------------------------------------------+
  26 */
  27
  28 namespace Civi\API\Provider;
  29 use Civi\API\Events;
  30 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  31
  32 /**
  33  * This class defines operations for inspecting the API's metadata.
  34  */
  35 class ReflectionProvider implements EventSubscriberInterface, ProviderInterface {
  36   /**
  37    * @return array
  38    */
  39   public static function getSubscribedEvents() {
  40     return array(
  41       Events::RESOLVE => array(
  42         array('onApiResolve', Events::W_EARLY), // TODO decide if we really want to override others
  43       ),
  44       Events::AUTHORIZE => array(
  45         array('onApiAuthorize', Events::W_EARLY), // TODO decide if we really want to override others
  46       ),
  47     );
  48   }
  49
  50   /**
  51    * @var \Civi\API\Kernel
  52    */
  53   private $apiKernel;
  54
  55   /**
  56    * @var array (string $entityName => array(string $actionName))
  57    */
  58   private $actions;
  59
  60   /**
  61    * @param \Civi\API\Kernel $apiKernel
  62    */
  63   public function __construct($apiKernel) {
  64     $this->apiKernel = $apiKernel;
  65     $this->actions = array(
  66       'Entity' => array('get', 'getactions'),
  67       '*' => array('getactions'), // 'getfields'
  68     );
  69   }
  70
  71   /**
  72    * @param \Civi\API\Event\ResolveEvent $event
  73    */
  74   public function onApiResolve(\Civi\API\Event\ResolveEvent $event) {
  75     $apiRequest = $event->getApiRequest();
  76     $actions = isset($this->actions[$apiRequest['entity']]) ? $this->actions[$apiRequest['entity']] : $this->actions['*'];
  77     if (in_array($apiRequest['action'], $actions)) {
  78       $apiRequest['is_metadata'] = TRUE;
  79       $event->setApiRequest($apiRequest);
  80       $event->setApiProvider($this);
  81       $event->stopPropagation(); // TODO decide if we really want to override others
  82     }
  83   }
  84
  85   /**
  86    * @param \Civi\API\Event\AuthorizeEvent $event
  87    */
  88   public function onApiAuthorize(\Civi\API\Event\AuthorizeEvent $event) {
  89     $apiRequest = $event->getApiRequest();
  90     if (isset($apiRequest['is_metadata'])) {
  91       // if (\CRM_Core_Permission::check('access AJAX API') || \CRM_Core_Permission::check('access CiviCRM')) {
  92       $event->authorize();
  93       $event->stopPropagation();
  94       // }
  95     }
  96   }
  97
  98   /**
  99    * {inheritdoc}
 100    */
 101   public function invoke($apiRequest) {
 102     if ($apiRequest['entity'] == 'Entity' && $apiRequest['action'] == 'get') {
 103       return civicrm_api3_create_success($this->apiKernel->getEntityNames($apiRequest['version']));
 104     }
 105     switch ($apiRequest['action']) {
 106       case 'getactions':
 107         return civicrm_api3_create_success($this->apiKernel->getActionNames($apiRequest['version'], $apiRequest['entity']));
 108 //      case 'getfields':
 109 //        return $this->doGetFields($apiRequest);
 110       default:
 111     }
 112
 113     // We shouldn't get here because onApiResolve() checks $this->actions
 114     throw new \API_Exception("Unsupported action ("  . $apiRequest['entity'] . '.' . $apiRequest['action'] . ']');
 115   }
 116
 117   /**
 118    * {inheritdoc}
 119    */
 120   function getEntityNames($version) {
 121     return array('Entity');
 122   }
 123
 124   /**
 125    * {inheritdoc}
 126    */
 127   function getActionNames($version, $entity) {
 128     return isset($this->actions[$entity]) ? $this->actions[$entity] : $this->actions['*'];
 129   }
 130 }