CRM/ACL/BAO/Cache.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | CiviCRM version 4.7                                                |
   5  +--------------------------------------------------------------------+
   6  | Copyright CiviCRM LLC (c) 2004-2015                                |
   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 /**
  29  *
  30  * @package CRM
  31  * @copyright CiviCRM LLC (c) 2004-2015
  32  */
  33
  34 /**
  35  *  Access Control Cache.
  36  */
  37 class CRM_ACL_BAO_Cache extends CRM_ACL_DAO_Cache {
  38
  39   static $_cache = NULL;
  40
  41   /**
  42    * @param int $id
  43    *
  44    * @return mixed
  45    */
  46   public static function &build($id) {
  47     if (!self::$_cache) {
  48       self::$_cache = array();
  49     }
  50
  51     if (array_key_exists($id, self::$_cache)) {
  52       return self::$_cache[$id];
  53     }
  54
  55     // check if this entry exists in db
  56     // if so retrieve and return
  57     self::$_cache[$id] = self::retrieve($id);
  58     if (self::$_cache[$id]) {
  59       return self::$_cache[$id];
  60     }
  61
  62     self::$_cache[$id] = CRM_ACL_BAO_ACL::getAllByContact($id);
  63     self::store($id, self::$_cache[$id]);
  64     return self::$_cache[$id];
  65   }
  66
  67   /**
  68    * @param int $id
  69    *
  70    * @return array
  71    */
  72   public static function retrieve($id) {
  73     $query = "
  74 SELECT acl_id
  75   FROM civicrm_acl_cache
  76  WHERE contact_id = %1
  77 ";
  78     $params = array(1 => array($id, 'Integer'));
  79
  80     if ($id == 0) {
  81       $query .= " OR contact_id IS NULL";
  82     }
  83
  84     $dao = CRM_Core_DAO::executeQuery($query, $params);
  85
  86     $cache = array();
  87     while ($dao->fetch()) {
  88       $cache[$dao->acl_id] = 1;
  89     }
  90     return $cache;
  91   }
  92
  93   /**
  94    * @param int $id
  95    * @param array $cache
  96    */
  97   public static function store($id, &$cache) {
  98     foreach ($cache as $aclID => $data) {
  99       $dao = new CRM_ACL_DAO_Cache();
 100       if ($id) {
 101         $dao->contact_id = $id;
 102       }
 103       $dao->acl_id = $aclID;
 104
 105       $cache[$aclID] = 1;
 106
 107       $dao->save();
 108     }
 109   }
 110
 111   /**
 112    * @param int $id
 113    */
 114   public static function deleteEntry($id) {
 115     if (self::$_cache &&
 116       array_key_exists($id, self::$_cache)
 117     ) {
 118       unset(self::$_cache[$id]);
 119     }
 120
 121     $query = "
 122 DELETE FROM civicrm_acl_cache
 123 WHERE contact_id = %1
 124 ";
 125     $params = array(1 => array($id, 'Integer'));
 126     CRM_Core_DAO::executeQuery($query, $params);
 127   }
 128
 129   /**
 130    * @param int $id
 131    */
 132   public static function updateEntry($id) {
 133     // rebuilds civicrm_acl_cache
 134     self::deleteEntry($id);
 135     self::build($id);
 136
 137     // rebuilds civicrm_acl_contact_cache
 138     CRM_Contact_BAO_Contact_Permission::cache($id, CRM_Core_Permission::VIEW, TRUE);
 139   }
 140
 141   /**
 142    * Deletes all the cache entries.
 143    */
 144   public static function resetCache() {
 145     // reset any static caching
 146     self::$_cache = NULL;
 147
 148     // reset any db caching
 149     $config = CRM_Core_Config::singleton();
 150     $smartGroupCacheTimeout = CRM_Contact_BAO_GroupContactCache::smartGroupCacheTimeout();
 151
 152     //make sure to give original timezone settings again.
 153     $now = CRM_Utils_Date::getUTCTime();
 154
 155     $query = "
 156 DELETE
 157 FROM   civicrm_acl_cache
 158 WHERE  modified_date IS NULL
 159    OR  (TIMESTAMPDIFF(MINUTE, modified_date, $now) >= $smartGroupCacheTimeout)
 160 ";
 161     CRM_Core_DAO::singleValueQuery($query);
 162
 163     // CRM_Core_DAO::singleValueQuery("TRUNCATE TABLE civicrm_acl_contact_cache"); // No, force-commits transaction
 164     // CRM_Core_DAO::singleValueQuery("DELETE FROM civicrm_acl_contact_cache"); // Transaction-safe
 165     if (CRM_Core_Transaction::isActive()) {
 166       CRM_Core_Transaction::addCallback(CRM_Core_Transaction::PHASE_POST_COMMIT, function () {
 167         CRM_Core_DAO::singleValueQuery("TRUNCATE TABLE civicrm_acl_contact_cache");
 168       });
 169     }
 170     else {
 171       CRM_Core_DAO::singleValueQuery("TRUNCATE TABLE civicrm_acl_contact_cache");
 172     }
 173   }
 174
 175 }