Civi/API/Subscriber/ChainSubscriber.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | CiviCRM version 5                                                  |
   5  +--------------------------------------------------------------------+
   6  | Copyright CiviCRM LLC (c) 2004-2019                                |
   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\Subscriber;
  29
  30 use Civi\API\Events;
  31 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  32
  33 /**
  34  * The ChainSubscriber looks for API parameters which specify a nested or
  35  * chained API call. For example:
  36  *
  37  * @code
  38  * $result = civicrm_api('Contact', 'create', array(
  39  *   'version' => 3,
  40  *   'first_name' => 'Amy',
  41  *   'api.Email.create' => array(
  42  *     'email' => 'amy@example.com',
  43  *     'location_type_id' => 123,
  44  *   ),
  45  * ));
  46  * @endcode
  47  *
  48  * The ChainSubscriber looks for any parameters of the form "api.Email.create";
  49  * if found, it issues the nested API call (and passes some extra context --
  50  * eg Amy's contact_id).
  51  */
  52 class ChainSubscriber implements EventSubscriberInterface {
  53
  54   /**
  55    * @return array
  56    */
  57   public static function getSubscribedEvents() {
  58     return [
  59       Events::RESPOND => ['onApiRespond', Events::W_EARLY],
  60     ];
  61   }
  62
  63   /**
  64    * @param \Civi\API\Event\RespondEvent $event
  65    *   API response event.
  66    *
  67    * @throws \Exception
  68    */
  69   public function onApiRespond(\Civi\API\Event\RespondEvent $event) {
  70     $apiRequest = $event->getApiRequest();
  71     if ($apiRequest['version'] < 4) {
  72       $result = $event->getResponse();
  73       if (\CRM_Utils_Array::value('is_error', $result, 0) == 0) {
  74         $this->callNestedApi($event->getApiKernel(), $apiRequest['params'], $result, $apiRequest['action'], $apiRequest['entity'], $apiRequest['version']);
  75         $event->setResponse($result);
  76       }
  77     }
  78   }
  79
  80   /**
  81    * Call any nested api calls.
  82    *
  83    * TODO: We don't really need this to be a separate function.
  84    * @param \Civi\API\Kernel $apiKernel
  85    * @param $params
  86    * @param $result
  87    * @param $action
  88    * @param $entity
  89    * @param $version
  90    * @throws \Exception
  91    */
  92   protected function callNestedApi($apiKernel, &$params, &$result, $action, $entity, $version) {
  93     $lowercase_entity = _civicrm_api_get_entity_name_from_camel($entity);
  94
  95     // We don't need to worry about nested api in the getfields/getoptions
  96     // actions, so just return immediately.
  97     if (in_array($action, ['getfields', 'getfield', 'getoptions'])) {
  98       return;
  99     }
 100
 101     if ($action == 'getsingle') {
 102       // I don't understand the protocol here, but we don't want
 103       // $result to be a recursive array
 104       // $result['values'][0] = $result;
 105       $oldResult = $result;
 106       $result = ['values' => [0 => $oldResult]];
 107     }
 108     foreach ($params as $field => $newparams) {
 109       if ((is_array($newparams) || $newparams === 1) && $field <> 'api.has_parent' && substr($field, 0, 3) == 'api') {
 110
 111         // 'api.participant.delete' => 1 is a valid options - handle 1
 112         // instead of an array
 113         if ($newparams === 1) {
 114           $newparams = ['version' => $version];
 115         }
 116         // can be api_ or api.
 117         $separator = $field[3];
 118         if (!($separator == '.' || $separator == '_')) {
 119           continue;
 120         }
 121         $subAPI = explode($separator, $field);
 122
 123         $subaction = empty($subAPI[2]) ? $action : $subAPI[2];
 124         $subParams = [
 125           'debug' => \CRM_Utils_Array::value('debug', $params),
 126         ];
 127         $subEntity = _civicrm_api_get_entity_name_from_camel($subAPI[1]);
 128
 129         // Hard coded list of entitys that have fields starting api_ and shouldn't be automatically
 130         // deemed to be chained API calls
 131         $skipList = [
 132           'SmsProvider' => ['type', 'url', 'params'],
 133           'Job' => ['prefix', 'entity', 'action'],
 134           'Contact' => ['key'],
 135         ];
 136         if (isset($skipList[$entity]) && in_array($subEntity, $skipList[$entity])) {
 137           continue;
 138         }
 139
 140         foreach ($result['values'] as $idIndex => $parentAPIValues) {
 141
 142           if ($subEntity != 'contact') {
 143             //contact spits the dummy at activity_id so what else won't it like?
 144             //set entity_id & entity table based on the parent's id & entity.
 145             //e.g for something like note if the parent call is contact
 146             //'entity_table' will be set to 'contact' & 'id' to the contact id
 147             //from the parent call. in this case 'contact_id' will also be
 148             //set to the parent's id
 149             if (!($subEntity == 'line_item' && $lowercase_entity == 'contribution' && $action != 'create')) {
 150               $subParams["entity_id"] = $parentAPIValues['id'];
 151               $subParams['entity_table'] = 'civicrm_' . $lowercase_entity;
 152             }
 153
 154             $addEntityId = TRUE;
 155             if ($subEntity == 'relationship' && $lowercase_entity == 'contact') {
 156               // if a relationship call is chained to a contact call, we need
 157               // to check whether contact_id_a or contact_id_b for the
 158               // relationship is given. If so, don't add an extra subParam
 159               // "contact_id" => parent_id.
 160               // See CRM-16084.
 161               foreach (array_keys($newparams) as $key) {
 162                 if (substr($key, 0, 11) == 'contact_id_') {
 163                   $addEntityId = FALSE;
 164                   break;
 165                 }
 166               }
 167             }
 168             if ($addEntityId) {
 169               $subParams[$lowercase_entity . "_id"] = $parentAPIValues['id'];
 170             }
 171           }
 172           if ($entity != 'Contact' && \CRM_Utils_Array::value(strtolower($subEntity . "_id"), $parentAPIValues)) {
 173             //e.g. if event_id is in the values returned & subentity is event
 174             //then pass in event_id as 'id' don't do this for contact as it
 175             //does some weird things like returning primary email &
 176             //thus limiting the ability to chain email
 177             //TODO - this might need the camel treatment
 178             $subParams['id'] = $parentAPIValues[$subEntity . "_id"];
 179           }
 180
 181           if (\CRM_Utils_Array::value('entity_table', $result['values'][$idIndex]) == $subEntity) {
 182             $subParams['id'] = $result['values'][$idIndex]['entity_id'];
 183           }
 184           // if we are dealing with the same entity pass 'id' through
 185           // (useful for get + delete for example)
 186           if ($lowercase_entity == $subEntity) {
 187             $subParams['id'] = $result['values'][$idIndex]['id'];
 188           }
 189
 190           $subParams['version'] = $version;
 191           if (!empty($params['check_permissions'])) {
 192             $subParams['check_permissions'] = $params['check_permissions'];
 193           }
 194           $subParams['sequential'] = 1;
 195           $subParams['api.has_parent'] = 1;
 196           if (array_key_exists(0, $newparams)) {
 197             $genericParams = $subParams;
 198             // it is a numerically indexed array - ie. multiple creates
 199             foreach ($newparams as $entityparams) {
 200               $subParams = array_merge($genericParams, $entityparams);
 201               _civicrm_api_replace_variables($subParams, $result['values'][$idIndex], $separator);
 202               $result['values'][$idIndex][$field][] = $apiKernel->run($subEntity, $subaction, $subParams);
 203               if ($result['is_error'] === 1) {
 204                 throw new \Exception($subEntity . ' ' . $subaction . 'call failed with' . $result['error_message']);
 205               }
 206             }
 207           }
 208           else {
 209
 210             $subParams = array_merge($subParams, $newparams);
 211             _civicrm_api_replace_variables($subParams, $result['values'][$idIndex], $separator);
 212             $result['values'][$idIndex][$field] = $apiKernel->run($subEntity, $subaction, $subParams);
 213             if (!empty($result['is_error'])) {
 214               throw new \Exception($subEntity . ' ' . $subaction . 'call failed with' . $result['error_message']);
 215             }
 216           }
 217         }
 218       }
 219     }
 220     if ($action == 'getsingle') {
 221       $result = $result['values'][0];
 222     }
 223   }
 224
 225 }