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<?php
/**
* CEmailValidator class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright © 2008-2011 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CEmailValidator validates that the attribute value is a valid email address.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Id: CEmailValidator.php 3515 2011-12-28 12:29:24Z mdomba $
* @package system.validators
* @since 1.0
*/
class CEmailValidator extends CValidator
{
/**
* @var string the regular expression used to validate the attribute value.
* @see http://www.regular-expressions.info/email.html
*/
public $pattern='/^[a-zA-Z0-9!#$%&\'*+\\/=?^_`{|}~-]+(?:\.[a-zA-Z0-9!#$%&\'*+\\/=?^_`{|}~-]+)*@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?\.)+[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$/';
/**
* @var string the regular expression used to validate email addresses with the name part.
* This property is used only when {@link allowName} is true.
* @see allowName
*/
public $fullPattern='/^[^@]*<[a-zA-Z0-9!#$%&\'*+\\/=?^_`{|}~-]+(?:\.[a-zA-Z0-9!#$%&\'*+\\/=?^_`{|}~-]+)*@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?\.)+[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?>$/';
/**
* @var boolean whether to allow name in the email address (e.g. "Qiang Xue <qiang.xue@gmail.com>"). Defaults to false.
* @see fullPattern
*/
public $allowName=false;
/**
* @var boolean whether to check the MX record for the email address.
* Defaults to false. To enable it, you need to make sure the PHP function 'checkdnsrr'
* exists in your PHP installation.
*/
public $checkMX=false;
/**
* @var boolean whether to check port 25 for the email address.
* Defaults to false.
*/
public $checkPort=false;
/**
* @var boolean whether the attribute value can be null or empty. Defaults to true,
* meaning that if the attribute is empty, it is considered valid.
*/
public $allowEmpty=true;
/**
* Validates the attribute of the object.
* If there is any error, the error message is added to the object.
* @param CModel $object the object being validated
* @param string $attribute the attribute being validated
*/
protected function validateAttribute($object,$attribute)
{
$value=$object->$attribute;
if($this->allowEmpty && $this->isEmpty($value))
return;
if(!$this->validateValue($value))
{
$message=$this->message!==null?$this->message:Yii::t('yii','{attribute} is not a valid email address.');
$this->addError($object,$attribute,$message);
}
}
/**
* Validates a static value to see if it is a valid email.
* Note that this method does not respect {@link allowEmpty} property.
* This method is provided so that you can call it directly without going through the model validation rule mechanism.
* @param mixed $value the value to be validated
* @return boolean whether the value is a valid email
* @since 1.1.1
*/
public function validateValue($value)
{
// make sure string length is limited to avoid DOS attacks
$valid=is_string($value) && strlen($value)<=254 && (preg_match($this->pattern,$value) || $this->allowName && preg_match($this->fullPattern,$value));
if($valid)
$domain=rtrim(substr($value,strpos($value,'@')+1),'>');
if($valid && $this->checkMX && function_exists('checkdnsrr'))
$valid=checkdnsrr($domain,'MX');
if($valid && $this->checkPort && function_exists('fsockopen'))
$valid=fsockopen($domain,25)!==false;
return $valid;
}
/**
* Returns the JavaScript needed for performing client-side validation.
* @param CModel $object the data object being validated
* @param string $attribute the name of the attribute to be validated.
* @return string the client-side validation script.
* @see CActiveForm::enableClientValidation
* @since 1.1.7
*/
public function clientValidateAttribute($object,$attribute)
{
$message=$this->message!==null ? $this->message : Yii::t('yii','{attribute} is not a valid email address.');
$message=strtr($message, array(
'{attribute}'=>$object->getAttributeLabel($attribute),
));
$condition="!value.match({$this->pattern})";
if($this->allowName)
$condition.=" && !value.match({$this->fullPattern})";
return "
if(".($this->allowEmpty ? "$.trim(value)!='' && " : '').$condition.") {
messages.push(".CJSON::encode($message).");
}
";
}
}
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