1 <?php

2 namespace TYPO3\CMS\Core\FormProtection;

3 

40 class FormProtectionFactory {

41 

47  static protected $instances = array();

48 

52  private function __construct() {

53 

54  }

55 

66  static public function get($className = NULL) {

67  if ($className === NULL) {

68  $className = self::getClassNameByState();

69  }

70  if (!isset(self::$instances[$className])) {

71  self::createAndStoreInstance($className);

72  }

73  return self::$instances[$className];

74  }

75 

82  static protected function getClassNameByState() {

83  switch (TRUE) {

84  case self::isInstallToolSession():

85  $className = 'TYPO3\\CMS\\Core\\FormProtection\\InstallToolFormProtection';

86  break;

87  case self::isBackendSession():

88  $className = 'TYPO3\\CMS\\Core\\FormProtection\\BackendFormProtection';

89  break;

90  case self::isFrontendSession():

91 

92  default:

93  $className = 'TYPO3\\CMS\\Core\\FormProtection\\DisabledFormProtection';

94  }

95  return $className;

96  }

97 

103  static protected function isInstallToolSession() {

104  return defined('TYPO3_enterInstallScript') && TYPO3_enterInstallScript;

105  }

106 

112  static protected function isBackendSession() {

113  return isset($GLOBALS['BE_USER']) && $GLOBALS['BE_USER'] instanceof \TYPO3\CMS\Core\Authentication\BackendUserAuthentication && isset($GLOBALS['BE_USER']->user['uid']);

114  }

115 

121  static protected function isFrontendSession() {

122  return is_object($GLOBALS['TSFE']) && $GLOBALS['TSFE']->fe_user instanceof \TYPO3\CMS\Frontend\Authentication\FrontendUserAuthentication && isset($GLOBALS['TSFE']->fe_user->user['uid']) && TYPO3_MODE === 'FE';

123  }

124 

132  static protected function createAndStoreInstance($className) {

133  if (!class_exists($className, TRUE)) {

134  throw new \InvalidArgumentException('$className must be the name of an existing class, but ' . 'actually was "' . $className . '".', 1285352962);

135  }

136  $instance = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($className);

137  if (!$instance instanceof \TYPO3\CMS\Core\FormProtection\AbstractFormProtection) {

138  throw new \InvalidArgumentException('$className must be a subclass of ' . 'TYPO3\\CMS\\Core\\FormProtection\\AbstractFormProtection, but actually was "' . $className . '".', 1285353026);

139  }

140  self::$instances[$className] = $instance;

141  }

142 

154  static public function set($className, \TYPO3\CMS\Core\FormProtection\AbstractFormProtection $instance) {

155  self::$instances[$className] = $instance;

156  }

157 

165  static public function purgeInstances() {

166  foreach (self::$instances as $key => $instance) {

167  $instance->__destruct();

168  unset(self::$instances[$key]);

169  }

170  }

171 

172 }