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<?php |
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namespace carono\checksum; |
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use yii\helpers\ArrayHelper; |
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/** |
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* Class Request |
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* |
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* @property mixed checksumKey |
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* @package carono\checksum |
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*/ |
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class Request extends \yii\web\Request |
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{ |
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public $checksumParam = '_checksum'; |
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public $enableChecksumValidation = true; |
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public $redefineActiveField = true; |
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protected $_checksumKey; |
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public function getChecksumKey() |
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{ |
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return $this->_checksumKey ?: hash("sha256", $this->cookieValidationKey); |
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} |
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public function setChecksumKey($value) |
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{ |
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$this->_checksumKey = $value; |
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} |
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public function init() |
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{ |
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parent::init(); |
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if ($this->redefineActiveField) { |
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\Yii::$container->set('yii\widgets\ActiveField', 'carono\checksum\ActiveField'); |
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} |
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} |
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public function checksumIsEnabled() |
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{ |
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return $this->enableChecksumValidation; |
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} |
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/** |
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* @param null $clientSuppliedToken |
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* @return bool |
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*/ |
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public function validateCsrfToken($clientSuppliedToken = null) |
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{ |
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if ($this->isPost && $this->checksumIsEnabled()) { |
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$post = $this->post(); |
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$checksum = ArrayHelper::remove($post, $this->checksumParam); |
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$stack = $this->getStackByChecksum($checksum); |
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$postPartials = Checksum::formKeyPartials($post); |
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$stackPartials = Checksum::formKeyPartials($stack); |
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foreach (array_diff($stackPartials, $postPartials) as $lostPartial) { |
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list($formName, $attribute) = explode('=', $lostPartial); |
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$post[$formName][$attribute] = ''; |
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} |
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if (!Checksum::validate($post, $checksum, $this->checksumKey)) { |
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return false; |
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} |
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} |
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$this->clearStack(); |
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return parent::validateCsrfToken($clientSuppliedToken); |
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} |
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/** |
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* @return string |
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*/ |
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protected function getStackKey() |
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{ |
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return self::className() . $this->checksumParam; |
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} |
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/** |
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* @param $widgetId |
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* @param $modelName |
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* @param $fieldName |
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*/ |
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public function stackField($widgetId, $modelName, $fieldName) |
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{ |
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$key = $this->getStackKey(); |
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$data = $this->getStack(); |
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$data[$widgetId][$modelName][] = $fieldName; |
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return \Yii::$app->session->set($key, $data); |
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} |
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/** |
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* @param null $widgetId |
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*/ |
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public function clearStack($widgetId = null) |
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{ |
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$key = $this->getStackKey(); |
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$data = $this->getStack(); |
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if (!is_null($widgetId)) { |
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unset($data[$widgetId]); |
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} else { |
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$data = []; |
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} |
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return \Yii::$app->session->set($key, $data); |
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} |
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/** |
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* @param null $widgetId |
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* @return mixed |
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*/ |
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public function getStack($widgetId = null) |
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{ |
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$key = self::getStackKey(); |
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$data = \Yii::$app->session->get($key, []); |
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return is_null($widgetId) ? $data : ArrayHelper::getValue($data, $widgetId); |
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} |
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/** |
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* @param $checksum |
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* @return array |
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*/ |
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public function getStackByChecksum($checksum) |
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{ |
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foreach ($this->getStack() as $item) { |
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if (($value = ArrayHelper::getValue($item, $this->checksumParam . '.0')) && $value == $checksum) { |
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unset($item[$this->checksumParam]); |
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return $item; |
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} |
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} |
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return []; |
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} |
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} |
carono /
yii2-request-checksum
