mirror of
https://github.com/YunoHost-Apps/limesurvey_ynh.git
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204 lines
6 KiB
PHP
204 lines
6 KiB
PHP
<?php
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/**
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* CUrlValidator class file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright 2008-2013 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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/**
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* CUrlValidator validates that the attribute value is a valid http or https URL.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @package system.validators
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* @since 1.0
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*/
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class CUrlValidator extends CValidator
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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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* Since version 1.1.7 the pattern may contain a {schemes} token that will be replaced
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* by a regular expression which represents the {@see validSchemes}.
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*/
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public $pattern='/^{schemes}:\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)/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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* @since 1.1.7
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**/
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public $validSchemes=array('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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* @since 1.1.7
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**/
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public $defaultScheme;
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/**
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* @var boolean whether the attribute value can be null or empty. Defaults to true,
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* meaning that if the attribute is empty, it is considered valid.
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*/
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public $allowEmpty=true;
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/**
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* @var boolean whether validation process should care about IDN (internationalized domain names). Default
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* value is false which means that validation of URLs containing IDN will always fail.
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* @since 1.1.13
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*/
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public $validateIDN=false;
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/**
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* Validates the attribute of the object.
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* If there is any error, the error message is added to the object.
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* @param CModel $object the object being validated
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* @param string $attribute the attribute being validated
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*/
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protected function validateAttribute($object,$attribute)
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{
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$value=$object->$attribute;
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if($this->allowEmpty && $this->isEmpty($value))
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return;
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if(($value=$this->validateValue($value))!==false)
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$object->$attribute=$value;
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else
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{
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$message=$this->message!==null?$this->message:Yii::t('yii','{attribute} is not a valid URL.');
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$this->addError($object,$attribute,$message);
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}
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}
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/**
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* Validates a static value to see if it is a valid URL.
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* Note that this method does not respect {@link allowEmpty} property.
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* This method is provided so that you can call it directly without going through the model validation rule mechanism.
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* @param string $value the value to be validated
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* @return mixed false if the the value is not a valid URL, otherwise the possibly modified value ({@see defaultScheme})
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* @since 1.1.1
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*/
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public function validateValue($value)
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{
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if(is_string($value) && strlen($value)<2000) // make sure the length is limited to avoid DOS attacks
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{
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if($this->defaultScheme!==null && strpos($value,'://')===false)
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$value=$this->defaultScheme.'://'.$value;
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if($this->validateIDN)
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$value=$this->encodeIDN($value);
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if(strpos($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=$this->pattern;
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if(preg_match($pattern,$value))
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return $this->validateIDN ? $this->decodeIDN($value) : $value;
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}
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return false;
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}
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/**
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* Returns the JavaScript needed for performing client-side validation.
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* @param CModel $object the data object being validated
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* @param string $attribute the name of the attribute to be validated.
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* @return string the client-side validation script.
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* @see CActiveForm::enableClientValidation
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* @since 1.1.7
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*/
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public function clientValidateAttribute($object,$attribute)
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{
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if($this->validateIDN)
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{
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Yii::app()->getClientScript()->registerCoreScript('punycode');
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// punycode.js works only with the domains - so we have to extract it before punycoding
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$validateIDN='
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var info = value.match(/^(.+:\/\/|)([^/]+)/);
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if (info)
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value = info[1] + punycode.toASCII(info[2]);
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';
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}
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else
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$validateIDN='';
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$message=$this->message!==null ? $this->message : Yii::t('yii','{attribute} is not a valid URL.');
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$message=strtr($message, array(
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'{attribute}'=>$object->getAttributeLabel($attribute),
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));
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if(strpos($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=$this->pattern;
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$js="
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$validateIDN
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if(!value.match($pattern)) {
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messages.push(".CJSON::encode($message).");
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}
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";
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if($this->defaultScheme!==null)
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{
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$js="
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if(!value.match(/:\\/\\//)) {
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value=".CJSON::encode($this->defaultScheme)."+'://'+value;
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}
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$js
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";
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}
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if($this->allowEmpty)
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{
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$js="
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if(jQuery.trim(value)!='') {
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$js
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}
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";
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}
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return $js;
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}
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/**
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* Converts given IDN to the punycode.
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* @param string $value IDN to be converted.
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* @return string resulting punycode.
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* @since 1.1.13
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*/
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private function encodeIDN($value)
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{
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if(preg_match_all('/^(.*):\/\/([^\/]+)(.*)$/',$value,$matches))
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{
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if(function_exists('idn_to_ascii'))
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$value=$matches[1][0].'://'.idn_to_ascii($matches[2][0]).$matches[3][0];
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else
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{
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require_once(Yii::getPathOfAlias('system.vendors.Net_IDNA2.Net').DIRECTORY_SEPARATOR.'IDNA2.php');
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$idna=new Net_IDNA2();
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$value=$matches[1][0].'://'.@$idna->encode($matches[2][0]).$matches[3][0];
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}
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}
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return $value;
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}
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/**
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* Converts given punycode to the IDN.
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* @param string $value punycode to be converted.
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* @return string resulting IDN.
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* @since 1.1.13
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*/
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private function decodeIDN($value)
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{
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if(preg_match_all('/^(.*):\/\/([^\/]+)(.*)$/',$value,$matches))
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{
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if(function_exists('idn_to_utf8'))
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$value=$matches[1][0].'://'.idn_to_utf8($matches[2][0]).$matches[3][0];
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else
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{
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require_once(Yii::getPathOfAlias('system.vendors.Net_IDNA2.Net').DIRECTORY_SEPARATOR.'IDNA2.php');
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$idna=new Net_IDNA2();
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$value=$matches[1][0].'://'.@$idna->decode($matches[2][0]).$matches[3][0];
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}
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}
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return $value;
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}
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}
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