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<?php
/**
* Validation Class. Used for validation of model data
*
* PHP Version 5.x
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.Utility
* @since CakePHP(tm) v 1.2.0.3830
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::uses('Multibyte', 'I18n');
// Load multibyte if the extension is missing.
if (!function_exists('mb_strlen')) {
class_exists('Multibyte');
}
/**
* Offers different validation methods.
*
* @package Cake.Utility
* @since CakePHP v 1.2.0.3830
*/
class Validation {
/**
* Some complex patterns needed in multiple places
*
* @var array
*/
protected static $_pattern = array(
'hostname' => '(?:[a-z0-9][-a-z0-9]*\.)*(?:[a-z0-9][-a-z0-9]{0,62})\.(?:(?:[a-z]{2}\.)?[a-z]{2,4}|museum|travel)'
);
/**
* Holds an array of errors messages set in this class.
* These are used for debugging purposes
*
* @var array
*/
public static $errors = array();
/**
* Checks that a string contains something other than whitespace
*
* Returns true if string contains something other than whitespace
*
* $check can be passed as an array:
* array('check' => 'valueToCheck');
*
* @param mixed $check Value to check
* @return boolean Success
*/
public static function notEmpty($check) {
if (is_array($check)) {
extract(self::_defaults($check));
}
if (empty($check) && $check != '0') {
return false;
}
return self::_check($check, '/[^\s]+/m');
}
/**
* Checks that a string contains only integer or letters
*
* Returns true if string contains only integer or letters
*
* $check can be passed as an array:
* array('check' => 'valueToCheck');
*
* @param mixed $check Value to check
* @return boolean Success
*/
public static function alphaNumeric($check) {
if (is_array($check)) {
extract(self::_defaults($check));
}
if (empty($check) && $check != '0') {
return false;
}
return self::_check($check, '/^[\p{Ll}\p{Lm}\p{Lo}\p{Lt}\p{Lu}\p{Nd}]+$/mu');
}
/**
* Checks that a string length is within s specified range.
* Spaces are included in the character count.
* Returns true is string matches value min, max, or between min and max,
*
* @param string $check Value to check for length
* @param integer $min Minimum value in range (inclusive)
* @param integer $max Maximum value in range (inclusive)
* @return boolean Success
*/
public static function between($check, $min, $max) {
$length = mb_strlen($check);
return ($length >= $min && $length <= $max);
}
/**
* Returns true if field is left blank -OR- only whitespace characters are present in it's value
* Whitespace characters include Space, Tab, Carriage Return, Newline
*
* $check can be passed as an array:
* array('check' => 'valueToCheck');
*
* @param mixed $check Value to check
* @return boolean Success
*/
public static function blank($check) {
if (is_array($check)) {
extract(self::_defaults($check));
}
return !self::_check($check, '/[^\\s]/');
}
/**
* Validation of credit card numbers.
* Returns true if $check is in the proper credit card format.
*
* @param mixed $check credit card number to validate
* @param mixed $type 'all' may be passed as a sting, defaults to fast which checks format of most major credit cards
* if an array is used only the values of the array are checked.
* Example: array('amex', 'bankcard', 'maestro')
* @param boolean $deep set to true this will check the Luhn algorithm of the credit card.
* @param string $regex A custom regex can also be passed, this will be used instead of the defined regex values
* @return boolean Success
* @see Validation::luhn()
*/
public static function cc($check, $type = 'fast', $deep = false, $regex = null) {
if (is_array($check)) {
extract(self::_defaults($check));
}
$check = str_replace(array('-', ' '), '', $check);
if (mb_strlen($check) < 13) {
return false;
}
if (!is_null($regex)) {
if (self::_check($check, $regex)) {
return self::luhn($check, $deep);
}
}
$cards = array(
'all' => array(
'amex' => '/^3[4|7]\\d{13}$/',
'bankcard' => '/^56(10\\d\\d|022[1-5])\\d{10}$/',
'diners' => '/^(?:3(0[0-5]|[68]\\d)\\d{11})|(?:5[1-5]\\d{14})$/',
'disc' => '/^(?:6011|650\\d)\\d{12}$/',
'electron' => '/^(?:417500|4917\\d{2}|4913\\d{2})\\d{10}$/',
'enroute' => '/^2(?:014|149)\\d{11}$/',
'jcb' => '/^(3\\d{4}|2100|1800)\\d{11}$/',
'maestro' => '/^(?:5020|6\\d{3})\\d{12}$/',
'mc' => '/^5[1-5]\\d{14}$/',
'solo' => '/^(6334[5-9][0-9]|6767[0-9]{2})\\d{10}(\\d{2,3})?$/',
'switch' => '/^(?:49(03(0[2-9]|3[5-9])|11(0[1-2]|7[4-9]|8[1-2])|36[0-9]{2})\\d{10}(\\d{2,3})?)|(?:564182\\d{10}(\\d{2,3})?)|(6(3(33[0-4][0-9])|759[0-9]{2})\\d{10}(\\d{2,3})?)$/',
'visa' => '/^4\\d{12}(\\d{3})?$/',
'voyager' => '/^8699[0-9]{11}$/'
),
'fast' => '/^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6011[0-9]{12}|3(?:0[0-5]|[68][0-9])[0-9]{11}|3[47][0-9]{13})$/'
);
if (is_array($type)) {
foreach ($type as $value) {
$regex = $cards['all'][strtolower($value)];
if (self::_check($check, $regex)) {
return self::luhn($check, $deep);
}
}
} elseif ($type == 'all') {
foreach ($cards['all'] as $value) {
$regex = $value;
if (self::_check($check, $regex)) {
return self::luhn($check, $deep);
}
}
} else {
$regex = $cards['fast'];
if (self::_check($check, $regex)) {
return self::luhn($check, $deep);
}
}
return false;
}
/**
* Used to compare 2 numeric values.
*
* @param mixed $check1 if string is passed for a string must also be passed for $check2
* used as an array it must be passed as array('check1' => value, 'operator' => 'value', 'check2' -> value)
* @param string $operator Can be either a word or operand
* is greater >, is less <, greater or equal >=
* less or equal <=, is less <, equal to ==, not equal !=
* @param integer $check2 only needed if $check1 is a string
* @return boolean Success
*/
public static function comparison($check1, $operator = null, $check2 = null) {
if (is_array($check1)) {
extract($check1, EXTR_OVERWRITE);
}
$operator = str_replace(array(' ', "\t", "\n", "\r", "\0", "\x0B"), '', strtolower($operator));
switch ($operator) {
case 'isgreater':
case '>':
if ($check1 > $check2) {
return true;
}
break;
case 'isless':
case '<':
if ($check1 < $check2) {
return true;
}
break;
case 'greaterorequal':
case '>=':
if ($check1 >= $check2) {
return true;
}
break;
case 'lessorequal':
case '<=':
if ($check1 <= $check2) {
return true;
}
break;
case 'equalto':
case '==':
if ($check1 == $check2) {
return true;
}
break;
case 'notequal':
case '!=':
if ($check1 != $check2) {
return true;
}
break;
default:
self::$errors[] = __d('cake_dev', 'You must define the $operator parameter for Validation::comparison()');
break;
}
return false;
}
/**
* Used when a custom regular expression is needed.
*
* @param mixed $check When used as a string, $regex must also be a valid regular expression.
* As and array: array('check' => value, 'regex' => 'valid regular expression')
* @param string $regex If $check is passed as a string, $regex must also be set to valid regular expression
* @return boolean Success
*/
public static function custom($check, $regex = null) {
if (is_array($check)) {
extract(self::_defaults($check));
}
if ($regex === null) {
self::$errors[] = __d('cake_dev', 'You must define a regular expression for Validation::custom()');
return false;
}
return self::_check($check, $regex);
}
/**
* Date validation, determines if the string passed is a valid date.
* keys that expect full month, day and year will validate leap years
*
* @param string $check a valid date string
* @param mixed $format Use a string or an array of the keys below. Arrays should be passed as array('dmy', 'mdy', etc)
* Keys: dmy 27-12-2006 or 27-12-06 separators can be a space, period, dash, forward slash
* mdy 12-27-2006 or 12-27-06 separators can be a space, period, dash, forward slash
* ymd 2006-12-27 or 06-12-27 separators can be a space, period, dash, forward slash
* dMy 27 December 2006 or 27 Dec 2006
* Mdy December 27, 2006 or Dec 27, 2006 comma is optional
* My December 2006 or Dec 2006
* my 12/2006 separators can be a space, period, dash, forward slash
* @param string $regex If a custom regular expression is used this is the only validation that will occur.
* @return boolean Success
*/
public static function date($check, $format = 'ymd', $regex = null) {
if (!is_null($regex)) {
return self::_check($check, $regex);
}
$regex['dmy'] = '%^(?:(?:31(\\/|-|\\.|\\x20)(?:0?[13578]|1[02]))\\1|(?:(?:29|30)(\\/|-|\\.|\\x20)(?:0?[1,3-9]|1[0-2])\\2))(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$|^(?:29(\\/|-|\\.|\\x20)0?2\\3(?:(?:(?:1[6-9]|[2-9]\\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:0?[1-9]|1\\d|2[0-8])(\\/|-|\\.|\\x20)(?:(?:0?[1-9])|(?:1[0-2]))\\4(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$%';
$regex['mdy'] = '%^(?:(?:(?:0?[13578]|1[02])(\\/|-|\\.|\\x20)31)\\1|(?:(?:0?[13-9]|1[0-2])(\\/|-|\\.|\\x20)(?:29|30)\\2))(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$|^(?:0?2(\\/|-|\\.|\\x20)29\\3(?:(?:(?:1[6-9]|[2-9]\\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:(?:0?[1-9])|(?:1[0-2]))(\\/|-|\\.|\\x20)(?:0?[1-9]|1\\d|2[0-8])\\4(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$%';
$regex['ymd'] = '%^(?:(?:(?:(?:(?:1[6-9]|[2-9]\\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00)))(\\/|-|\\.|\\x20)(?:0?2\\1(?:29)))|(?:(?:(?:1[6-9]|[2-9]\\d)?\\d{2})(\\/|-|\\.|\\x20)(?:(?:(?:0?[13578]|1[02])\\2(?:31))|(?:(?:0?[1,3-9]|1[0-2])\\2(29|30))|(?:(?:0?[1-9])|(?:1[0-2]))\\2(?:0?[1-9]|1\\d|2[0-8]))))$%';
$regex['dMy'] = '/^((31(?!\\ (Feb(ruary)?|Apr(il)?|June?|(Sep(?=\\b|t)t?|Nov)(ember)?)))|((30|29)(?!\\ Feb(ruary)?))|(29(?=\\ Feb(ruary)?\\ (((1[6-9]|[2-9]\\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))|(0?[1-9])|1\\d|2[0-8])\\ (Jan(uary)?|Feb(ruary)?|Ma(r(ch)?|y)|Apr(il)?|Ju((ly?)|(ne?))|Aug(ust)?|Oct(ober)?|(Sep(?=\\b|t)t?|Nov|Dec)(ember)?)\\ ((1[6-9]|[2-9]\\d)\\d{2})$/';
$regex['Mdy'] = '/^(?:(((Jan(uary)?|Ma(r(ch)?|y)|Jul(y)?|Aug(ust)?|Oct(ober)?|Dec(ember)?)\\ 31)|((Jan(uary)?|Ma(r(ch)?|y)|Apr(il)?|Ju((ly?)|(ne?))|Aug(ust)?|Oct(ober)?|(Sep)(tember)?|(Nov|Dec)(ember)?)\\ (0?[1-9]|([12]\\d)|30))|(Feb(ruary)?\\ (0?[1-9]|1\\d|2[0-8]|(29(?=,?\\ ((1[6-9]|[2-9]\\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))))\\,?\\ ((1[6-9]|[2-9]\\d)\\d{2}))$/';
$regex['My'] = '%^(Jan(uary)?|Feb(ruary)?|Ma(r(ch)?|y)|Apr(il)?|Ju((ly?)|(ne?))|Aug(ust)?|Oct(ober)?|(Sep(?=\\b|t)t?|Nov|Dec)(ember)?)[ /]((1[6-9]|[2-9]\\d)\\d{2})$%';
$regex['my'] = '%^(((0[123456789]|10|11|12)([- /.])(([1][9][0-9][0-9])|([2][0-9][0-9][0-9]))))$%';
$format = (is_array($format)) ? array_values($format) : array($format);
foreach ($format as $key) {
if (self::_check($check, $regex[$key]) === true) {
return true;
}
}
return false;
}
/**
* Validates a datetime value
* All values matching the "date" core validation rule, and the "time" one will be valid
*
* @param array $check Value to check
* @param mixed $dateFormat Format of the date part
* Use a string or an array of the keys below. Arrays should be passed as array('dmy', 'mdy', etc)
* ## Keys:
*
* - dmy 27-12-2006 or 27-12-06 separators can be a space, period, dash, forward slash
* - mdy 12-27-2006 or 12-27-06 separators can be a space, period, dash, forward slash
* - ymd 2006-12-27 or 06-12-27 separators can be a space, period, dash, forward slash
* - dMy 27 December 2006 or 27 Dec 2006
* - Mdy December 27, 2006 or Dec 27, 2006 comma is optional
* - My December 2006 or Dec 2006
* - my 12/2006 separators can be a space, period, dash, forward slash
* @param string $regex Regex for the date part. If a custom regular expression is used this is the only validation that will occur.
* @return boolean True if the value is valid, false otherwise
* @see Validation::date
* @see Validation::time
*/
public static function datetime($check, $dateFormat = 'ymd', $regex = null) {
$valid = false;
$parts = explode(' ', $check);
if (!empty($parts) && count($parts) > 1) {
$time = array_pop($parts);
$date = implode(' ', $parts);
$valid = self::date($date, $dateFormat, $regex) && self::time($time);
}
return $valid;
}
/**
* Time validation, determines if the string passed is a valid time.
* Validates time as 24hr (HH:MM) or am/pm ([H]H:MM[a|p]m)
* Does not allow/validate seconds.
*
* @param string $check a valid time string
* @return boolean Success
*/
public static function time($check) {
return self::_check($check, '%^((0?[1-9]|1[012])(:[0-5]\d){0,2} ?([AP]M|[ap]m))$|^([01]\d|2[0-3])(:[0-5]\d){0,2}$%');
}
/**
* Boolean validation, determines if value passed is a boolean integer or true/false.
*
* @param string $check a valid boolean
* @return boolean Success
*/
public static function boolean($check) {
$booleanList = array(0, 1, '0', '1', true, false);
return in_array($check, $booleanList, true);
}
/**
* Checks that a value is a valid decimal. If $places is null, the $check is allowed to be a scientific float
* If no decimal point is found a false will be returned. Both the sign and exponent are optional.
*
* @param integer $check The value the test for decimal
* @param integer $places if set $check value must have exactly $places after the decimal point
* @param string $regex If a custom regular expression is used this is the only validation that will occur.
* @return boolean Success
*/
public static function decimal($check, $places = null, $regex = null) {
if (is_null($regex)) {
if (is_null($places)) {
$regex = '/^[-+]?[0-9]*(\\.{1}[0-9]+(?:[eE][-+]?[0-9]+)?)?$/';
} else {
$regex = '/^[-+]?[0-9]*(\\.{1}[0-9]{' . $places . '})?$/';
}
}
return self::_check($check, $regex);
}
/**
* Validates for an email address.
*
* Only uses getmxrr() checking for deep validation if PHP 5.3.0+ is used, or
* any PHP version on a non-windows distribution
*
* @param string $check Value to check
* @param boolean $deep Perform a deeper validation (if true), by also checking availability of host
* @param string $regex Regex to use (if none it will use built in regex)
* @return boolean Success
*/
public static function email($check, $deep = false, $regex = null) {
if (is_array($check)) {
extract(self::_defaults($check));
}
if (is_null($regex)) {
$regex = '/^[a-z0-9!#$%&\'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&\'*+\/=?^_`{|}~-]+)*@' . self::$_pattern['hostname'] . '$/i';
}
$return = self::_check($check, $regex);
if ($deep === false || $deep === null) {
return $return;
}
if ($return === true && preg_match('/@(' . self::$_pattern['hostname'] . ')$/i', $check, $regs)) {
if (function_exists('getmxrr') && getmxrr($regs[1], $mxhosts)) {
return true;
}
if (function_exists('checkdnsrr') && checkdnsrr($regs[1], 'MX')) {
return true;
}
return is_array(gethostbynamel($regs[1]));
}
return false;
}
/**
* Check that value is exactly $comparedTo.
*
* @param mixed $check Value to check
* @param mixed $comparedTo Value to compare
* @return boolean Success
*/
public static function equalTo($check, $comparedTo) {
return ($check === $comparedTo);
}
/**
* Check that value has a valid file extension.
*
* @param mixed $check Value to check
* @param array $extensions file extensions to allow
* @return boolean Success
*/
public static function extension($check, $extensions = array('gif', 'jpeg', 'png', 'jpg')) {
if (is_array($check)) {
return self::extension(array_shift($check), $extensions);
}
$pathSegments = explode('.', $check);
$extension = strtolower(array_pop($pathSegments));
foreach ($extensions as $value) {
if ($extension == strtolower($value)) {
return true;
}
}
return false;
}
/**
* Validation of an IP address.
*
* @param string $check The string to test.
* @param string $type The IP Protocol version to validate against
* @return boolean Success
*/
public static function ip($check, $type = 'both') {
$type = strtolower($type);
$flags = null;
if ($type === 'ipv4' || $type === 'both') {
$flags |= FILTER_FLAG_IPV4;
}
if ($type === 'ipv6' || $type === 'both') {
$flags |= FILTER_FLAG_IPV6;
}
return (boolean)filter_var($check, FILTER_VALIDATE_IP, array('flags' => $flags));
}
/**
* Checks whether the length of a string is greater or equal to a minimal length.
*
* @param string $check The string to test
* @param integer $min The minimal string length
* @return boolean Success
*/
public static function minLength($check, $min) {
return mb_strlen($check) >= $min;
}
/**
* Checks whether the length of a string is smaller or equal to a maximal length..
*
* @param string $check The string to test
* @param integer $max The maximal string length
* @return boolean Success
*/
public static function maxLength($check, $max) {
return mb_strlen($check) <= $max;
}
/**
* Checks that a value is a monetary amount.
*
* @param string $check Value to check
* @param string $symbolPosition Where symbol is located (left/right)
* @return boolean Success
*/
public static function money($check, $symbolPosition = 'left') {
$money = '(?!0,?\d)(?:\d{1,3}(?:([, .])\d{3})?(?:\1\d{3})*|(?:\d+))((?!\1)[,.]\d{2})?';
if ($symbolPosition == 'right') {
$regex = '/^' . $money . '(?<!\x{00a2})\p{Sc}?$/u';
} else {
$regex = '/^(?!\x{00a2})\p{Sc}?' . $money . '$/u';
}
return self::_check($check, $regex);
}
/**
* Validate a multiple select.
*
* Valid Options
*
* - in => provide a list of choices that selections must be made from
* - max => maximum number of non-zero choices that can be made
* - min => minimum number of non-zero choices that can be made
*
* @param mixed $check Value to check
* @param mixed $options Options for the check.
* @return boolean Success
*/
public static function multiple($check, $options = array()) {
$defaults = array('in' => null, 'max' => null, 'min' => null);
$options = array_merge($defaults, $options);
$check = array_filter((array)$check);
if (empty($check)) {
return false;
}
if ($options['max'] && count($check) > $options['max']) {
return false;
}
if ($options['min'] && count($check) < $options['min']) {
return false;
}
if ($options['in'] && is_array($options['in'])) {
foreach ($check as $val) {
if (!in_array($val, $options['in'], true)) {
return false;
}
}
}
return true;
}
/**
* Checks if a value is numeric.
*
* @param string $check Value to check
* @return boolean Success
*/
public static function numeric($check) {
return is_numeric($check);
}
/**
* Check that a value is a valid phone number.
*
* @param mixed $check Value to check (string or array)
* @param string $regex Regular expression to use
* @param string $country Country code (defaults to 'all')
* @return boolean Success
*/
public static function phone($check, $regex = null, $country = 'all') {
if (is_array($check)) {
extract(self::_defaults($check));
}
if (is_null($regex)) {
switch ($country) {
case 'us':
case 'all':
case 'can':
// includes all NANPA members.
// see http://en.wikipedia.org/wiki/North_American_Numbering_Plan#List_of_NANPA_countries_and_territories
$regex = '/^(?:\+?1)?[-. ]?\\(?[2-9][0-8][0-9]\\)?[-. ]?[2-9][0-9]{2}[-. ]?[0-9]{4}$/';
break;
}
}
if (empty($regex)) {
return self::_pass('phone', $check, $country);
}
return self::_check($check, $regex);
}
/**
* Checks that a given value is a valid postal code.
*
* @param mixed $check Value to check
* @param string $regex Regular expression to use
* @param string $country Country to use for formatting
* @return boolean Success
*/
public static function postal($check, $regex = null, $country = 'us') {
if (is_array($check)) {
extract(self::_defaults($check));
}
if (is_null($regex)) {
switch ($country) {
case 'uk':
$regex = '/\\A\\b[A-Z]{1,2}[0-9][A-Z0-9]? [0-9][ABD-HJLNP-UW-Z]{2}\\b\\z/i';
break;
case 'ca':
$regex = '/\\A\\b[ABCEGHJKLMNPRSTVXY][0-9][A-Z] [0-9][A-Z][0-9]\\b\\z/i';
break;
case 'it':
case 'de':
$regex = '/^[0-9]{5}$/i';
break;
case 'be':
$regex = '/^[1-9]{1}[0-9]{3}$/i';
break;
case 'us':
$regex = '/\\A\\b[0-9]{5}(?:-[0-9]{4})?\\b\\z/i';
break;
}
}
if (empty($regex)) {
return self::_pass('postal', $check, $country);
}
return self::_check($check, $regex);
}
/**
* Validate that a number is in specified range.
* if $lower and $upper are not set, will return true if
* $check is a legal finite on this platform
*
* @param string $check Value to check
* @param integer $lower Lower limit
* @param integer $upper Upper limit
* @return boolean Success
*/
public static function range($check, $lower = null, $upper = null) {
if (!is_numeric($check)) {
return false;
}
if (isset($lower) && isset($upper)) {
return ($check > $lower && $check < $upper);
}
return is_finite($check);
}
/**
* Checks that a value is a valid Social Security Number.
*
* @param mixed $check Value to check
* @param string $regex Regular expression to use
* @param string $country Country
* @return boolean Success
*/
public static function ssn($check, $regex = null, $country = null) {
if (is_array($check)) {
extract(self::_defaults($check));
}
if (is_null($regex)) {
switch ($country) {
case 'dk':
$regex = '/\\A\\b[0-9]{6}-[0-9]{4}\\b\\z/i';
break;
case 'nl':
$regex = '/\\A\\b[0-9]{9}\\b\\z/i';
break;
case 'us':
$regex = '/\\A\\b[0-9]{3}-[0-9]{2}-[0-9]{4}\\b\\z/i';
break;
}
}
if (empty($regex)) {
return self::_pass('ssn', $check, $country);
}
return self::_check($check, $regex);
}
/**
* Checks that a value is a valid URL according to http://www.w3.org/Addressing/URL/url-spec.txt
*
* The regex checks for the following component parts:
*
* - a valid, optional, scheme
* - a valid ip address OR
* a valid domain name as defined by section 2.3.1 of http://www.ietf.org/rfc/rfc1035.txt
* with an optional port number
* - an optional valid path
* - an optional query string (get parameters)
* - an optional fragment (anchor tag)
*
* @param string $check Value to check
* @param boolean $strict Require URL to be prefixed by a valid scheme (one of http(s)/ftp(s)/file/news/gopher)
* @return boolean Success
*/
public static function url($check, $strict = false) {
self::_populateIp();
$validChars = '([' . preg_quote('!"$&\'()*+,-.@_:;=~[]') . '\/0-9a-z\p{L}\p{N}]|(%[0-9a-f]{2}))';
$regex = '/^(?:(?:https?|ftps?|sftp|file|news|gopher):\/\/)' . (!empty($strict) ? '' : '?') .
'(?:' . self::$_pattern['IPv4'] . '|\[' . self::$_pattern['IPv6'] . '\]|' . self::$_pattern['hostname'] . ')(?::[1-9][0-9]{0,4})?' .
'(?:\/?|\/' . $validChars . '*)?' .
'(?:\?' . $validChars . '*)?' .
'(?:#' . $validChars . '*)?$/iu';
return self::_check($check, $regex);
}
/**
* Checks if a value is in a given list.
*
* @param string $check Value to check
* @param array $list List to check against
* @return boolean Success
*/
public static function inList($check, $list) {
return in_array($check, $list, true);
}
/**
* Runs an user-defined validation.
*
* @param mixed $check value that will be validated in user-defined methods.
* @param object $object class that holds validation method
* @param string $method class method name for validation to run
* @param array $args arguments to send to method
* @return mixed user-defined class class method returns
*/
public static function userDefined($check, $object, $method, $args = null) {
return call_user_func_array(array($object, $method), array($check, $args));
}
/**
* Checks that a value is a valid uuid - http://tools.ietf.org/html/rfc4122
*
* @param string $check Value to check
* @return boolean Success
*/
public static function uuid($check) {
$regex = '/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/i';
return self::_check($check, $regex);
}
/**
* Attempts to pass unhandled Validation locales to a class starting with $classPrefix
* and ending with Validation. For example $classPrefix = 'nl', the class would be
* `NlValidation`.
*
* @param string $method The method to call on the other class.
* @param mixed $check The value to check or an array of parameters for the method to be called.
* @param string $classPrefix The prefix for the class to do the validation.
* @return mixed Return of Passed method, false on failure
*/
protected static function _pass($method, $check, $classPrefix) {
$className = ucwords($classPrefix) . 'Validation';
if (!class_exists($className)) {
trigger_error(__d('cake_dev', 'Could not find %s class, unable to complete validation.', $className), E_USER_WARNING);
return false;
}
if (!method_exists($className, $method)) {
trigger_error(__d('cake_dev', 'Method %s does not exist on %s unable to complete validation.', $method, $className), E_USER_WARNING);
return false;
}
$check = (array)$check;
return call_user_func_array(array($className, $method), $check);
}
/**
* Runs a regular expression match.
*
* @param mixed $check Value to check against the $regex expression
* @param string $regex Regular expression
* @return boolean Success of match
*/
protected static function _check($check, $regex) {
if (preg_match($regex, $check)) {
self::$errors[] = false;
return true;
} else {
self::$errors[] = true;
return false;
}
}
/**
* Get the values to use when value sent to validation method is
* an array.
*
* @param array $params Parameters sent to validation method
* @return void
*/
protected static function _defaults($params) {
self::_reset();
$defaults = array(
'check' => null,
'regex' => null,
'country' => null,
'deep' => false,
'type' => null
);
$params = array_merge($defaults, $params);
if ($params['country'] !== null) {
$params['country'] = mb_strtolower($params['country']);
}
return $params;
}
/**
* Luhn algorithm
*
* @param string|array $check
* @param boolean $deep
* @return boolean Success
* @see http://en.wikipedia.org/wiki/Luhn_algorithm
*/
public static function luhn($check, $deep = false) {
if (is_array($check)) {
extract(self::_defaults($check));
}
if ($deep !== true) {
return true;
}
if ($check == 0) {
return false;
}
$sum = 0;
$length = strlen($check);
for ($position = 1 - ($length % 2); $position < $length; $position += 2) {
$sum += $check[$position];
}
for ($position = ($length % 2); $position < $length; $position += 2) {
$number = $check[$position] * 2;
$sum += ($number < 10) ? $number : $number - 9;
}
return ($sum % 10 == 0);
}
/**
* Lazily populate the IP address patterns used for validations
*
* @return void
*/
protected static function _populateIp() {
if (!isset(self::$_pattern['IPv6'])) {
$pattern = '((([0-9A-Fa-f]{1,4}:){7}(([0-9A-Fa-f]{1,4})|:))|(([0-9A-Fa-f]{1,4}:){6}';
$pattern .= '(:|((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})';
$pattern .= '|(:[0-9A-Fa-f]{1,4})))|(([0-9A-Fa-f]{1,4}:){5}((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})';
$pattern .= '(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|((:[0-9A-Fa-f]{1,4}){1,2})))|(([0-9A-Fa-f]{1,4}:)';
$pattern .= '{4}(:[0-9A-Fa-f]{1,4}){0,1}((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2}))';
$pattern .= '{3})?)|((:[0-9A-Fa-f]{1,4}){1,2})))|(([0-9A-Fa-f]{1,4}:){3}(:[0-9A-Fa-f]{1,4}){0,2}';
$pattern .= '((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|';
$pattern .= '((:[0-9A-Fa-f]{1,4}){1,2})))|(([0-9A-Fa-f]{1,4}:){2}(:[0-9A-Fa-f]{1,4}){0,3}';
$pattern .= '((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2}))';
$pattern .= '{3})?)|((:[0-9A-Fa-f]{1,4}){1,2})))|(([0-9A-Fa-f]{1,4}:)(:[0-9A-Fa-f]{1,4})';
$pattern .= '{0,4}((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)';
$pattern .= '|((:[0-9A-Fa-f]{1,4}){1,2})))|(:(:[0-9A-Fa-f]{1,4}){0,5}((:((25[0-5]|2[0-4]';
$pattern .= '\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|((:[0-9A-Fa-f]{1,4})';
$pattern .= '{1,2})))|(((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})))(%.+)?';
self::$_pattern['IPv6'] = $pattern;
}
if (!isset(self::$_pattern['IPv4'])) {
$pattern = '(?:(?:25[0-5]|2[0-4][0-9]|(?:(?:1[0-9])?|[1-9]?)[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|(?:(?:1[0-9])?|[1-9]?)[0-9])';
self::$_pattern['IPv4'] = $pattern;
}
}
/**
* Reset internal variables for another validation run.
*
* @return void
*/
protected static function _reset() {
self::$errors = array();
}
}
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