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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\validators; |
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use Yii; |
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use yii\base\InvalidConfigException; |
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use yii\web\JsExpression; |
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use yii\helpers\Json; |
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/** |
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* UrlValidator validates that the attribute value is a valid http or https URL. |
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* |
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* Note that this validator only checks if the URL scheme and host part are correct. |
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* It does not check the remaining parts of a URL. |
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* |
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* @author Qiang Xue <[email protected]> |
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* @since 2.0 |
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*/ |
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class UrlValidator extends Validator |
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{ |
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/** |
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* @var string the regular expression used to validate the attribute value. |
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* The pattern may contain a `{schemes}` token that will be replaced |
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* by a regular expression which represents the [[validSchemes]]. |
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*/ |
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public $pattern = '/^{schemes}:\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(?::\d{1,5})?(?:$|[?\/#])/i'; |
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/** |
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* @var array list of URI schemes which should be considered valid. By default, http and https |
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* are considered to be valid schemes. |
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*/ |
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public $validSchemes = ['http', 'https']; |
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/** |
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* @var string the default URI scheme. If the input doesn't contain the scheme part, the default |
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* scheme will be prepended to it (thus changing the input). Defaults to null, meaning a URL must |
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* contain the scheme part. |
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*/ |
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public $defaultScheme; |
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/** |
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* @var bool whether validation process should take into account IDN (internationalized |
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* domain names). Defaults to false meaning that validation of URLs containing IDN will always |
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* fail. Note that in order to use IDN validation you have to install and enable `intl` PHP |
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* extension, otherwise an exception would be thrown. |
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*/ |
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public $enableIDN = false; |
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/** |
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* @inheritdoc |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if ($this->enableIDN && !function_exists('idn_to_ascii')) { |
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throw new InvalidConfigException('In order to use IDN validation intl extension must be installed and enabled.'); |
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} |
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if ($this->message === null) { |
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$this->message = Yii::t('yii', '{attribute} is not a valid URL.'); |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function validateAttribute($model, $attribute) |
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{ |
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$value = $model->$attribute; |
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$result = $this->validateValue($value); |
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if (!empty($result)) { |
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$this->addError($model, $attribute, $result[0], $result[1]); |
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} elseif ($this->defaultScheme !== null && strpos($value, '://') === false) { |
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$model->$attribute = $this->defaultScheme . '://' . $value; |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function validateValue($value) |
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{ |
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// make sure the length is limited to avoid DOS attacks |
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if (is_string($value) && strlen($value) < 2000) { |
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if ($this->defaultScheme !== null && strpos($value, '://') === false) { |
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$value = $this->defaultScheme . '://' . $value; |
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} |
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if (strpos($this->pattern, '{schemes}') !== false) { |
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$pattern = str_replace('{schemes}', '(' . implode('|', $this->validSchemes) . ')', $this->pattern); |
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} else { |
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$pattern = $this->pattern; |
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} |
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if ($this->enableIDN) { |
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$value = preg_replace_callback('/:\/\/([^\/]+)/', function ($matches) { |
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return '://' . idn_to_ascii($matches[1]); |
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}, $value); |
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} |
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if (preg_match($pattern, $value)) { |
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return null; |
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} |
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} |
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return [$this->message, []]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function clientValidateAttribute($model, $attribute, $view) |
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{ |
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ValidationAsset::register($view); |
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if ($this->enableIDN) { |
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PunycodeAsset::register($view); |
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} |
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$options = $this->getClientOptions($model, $attribute); |
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return 'yii.validation.url(value, messages, ' . Json::htmlEncode($options) . ');'; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getClientOptions($model, $attribute) |
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{ |
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if (strpos($this->pattern, '{schemes}') !== false) { |
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$pattern = str_replace('{schemes}', '(' . implode('|', $this->validSchemes) . ')', $this->pattern); |
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} else { |
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$pattern = $this->pattern; |
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} |
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$options = [ |
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'pattern' => new JsExpression($pattern), |
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'message' => Yii::$app->getI18n()->format($this->message, [ |
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'attribute' => $model->getAttributeLabel($attribute), |
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], Yii::$app->language), |
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'enableIDN' => (bool) $this->enableIDN, |
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]; |
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if ($this->skipOnEmpty) { |
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$options['skipOnEmpty'] = 1; |
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} |
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if ($this->defaultScheme !== null) { |
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$options['defaultScheme'] = $this->defaultScheme; |
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} |
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return $options; |
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} |
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} |
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rob006 /
yii2-dev
