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freenetis-github/application/helpers/valid.php @ b8a40ec0

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<?php defined('SYSPATH') or die('No direct script access.');
/**
* Validation helper class.
*
* $Id: valid.php 1865 2008-01-29 19:48:29Z Geert $
*
* @package Validation
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @license http://kohanaphp.com/license.html
*/
class valid {

/**
* Validate email, commonly used characters only
*
* @param string email address
* @return boolean
*/
public static function email($email)
{
return (bool) preg_match('/^(?!\.)[-+_a-z0-9.]++(?<!\.)@(?![-.])[-a-z0-9.]+(?<!\.)\.[a-z]{2,6}$/iD', $email);
}

/**
* Validate email, RFC compliant version
* Note: This function is LESS strict than valid_email. Choose carefully.
*
* @see Originally by Cal Henderson, modified to fit Kohana syntax standards:
* @see http://www.iamcal.com/publish/articles/php/parsing_email/
* @see http://www.w3.org/Protocols/rfc822/
*
* @param string email address
* @return boolean
*/
public static function email_rfc($email)
{
$qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]';
$dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]';
$atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+';
$pair = '\\x5c[\\x00-\\x7f]';

$domain_literal = "\\x5b($dtext|$pair)*\\x5d";
$quoted_string = "\\x22($qtext|$pair)*\\x22";
$sub_domain = "($atom|$domain_literal)";
$word = "($atom|$quoted_string)";
$domain = "$sub_domain(\\x2e$sub_domain)*";
$local_part = "$word(\\x2e$word)*";
$addr_spec = "$local_part\\x40$domain";

return (bool) preg_match('/^'.$addr_spec.'$/D', $email);
}

/**
* Validate URL
*
* @param string URL
* @param string protocol
* @return boolean
*/
public static function url($url, $scheme = 'http')
{
// Scheme is always lowercase
$scheme = strtolower($scheme);

// Disable error reporting
$ER = error_reporting(0);

// Use parse_url to validate the URL
$url = parse_url($url);

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//echo "<pre>";
//print_r ($url);
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// Restore error reporting
error_reporting($ER);

// If the boolean check returns TRUE, return FALSE, and vice versa
return ! (empty($url['host']) OR empty($url['scheme']) OR $url['scheme'] !== $scheme);
}

/**
* Validate IP
*
* @param string IP address
* @return boolean
*/
public static function ip($ip)
{
if ( ! preg_match('/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/D', $ip))
return FALSE;

$octets = explode('.', $ip);

for ($i = 1; $i < 5; $i++)
{
$octet = (int) $octets[($i-1)];
if ($i === 1)
{
if ($octet > 223 OR $octet < 1)
return FALSE;
}
elseif ($i === 4)
{
if ($octet < 1)
return FALSE;
}
else
{
if ($octet > 254)
return FALSE;
}
}

return TRUE;
}
/**
* Checks ip address if matches subnet and mask.
*
* @param long $ip
* @param integer $net
* @param integer $mask
* @return bool
*/
public static function ip_check_subnet($ip, $net, $mask)
{
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$size = (~$mask & 0xffffffff)+1;
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if (($ip & $mask) != $net)
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{
return false; // IP address does not match the subnet/mask
}
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else if ($size > 1 && ($ip == $net || $ip == ($net + $size - 1)))
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{
return false; // Invalid IP address
}
return true;
}

/**
* Validates a credit card number using the Luhn (mod10) formula.
* @see http://en.wikipedia.org/wiki/Luhn_algorithm
*
* @param integer credit card number
* @param string card type
* @return boolean
*/
public static function credit_card($number, $type = 'default')
{
// Remove all non-digit characters from the number
if (($number = preg_replace('/\D+/', '', $number)) === '')
return FALSE;

$cards = Config::item('credit_cards');

// Check card type
$type = strtolower($type);

if ( ! isset($cards[$type]))
return FALSE;

// Check card number length
$length = strlen($number);

// Validate the card length by the card type
if ( ! in_array($length, preg_split('/\D+/', $cards[$type]['length'])))
return FALSE;

// Check card number prefix
if ( ! preg_match('/^'.$cards[$type]['prefix'].'/', $number))
return FALSE;

// No Luhn check required
if ($cards[$type]['luhn'] == FALSE)
return TRUE;

// Checksum of the card number
$checksum = 0;

for ($i = $length - 1; $i >= 0; $i -= 2)
{
// Add up every 2nd digit, starting from the right
$checksum += substr($number, $i, 1);
}

for ($i = $length - 2; $i >= 0; $i -= 2)
{
// Add up every 2nd digit doubled, starting from the right
$double = substr($number, $i, 1) * 2;

// Subtract 9 from the double where value is greater than 10
$checksum += ($double >= 10) ? $double - 9 : $double;
}

// If the checksum is a multiple of 10, the number is valid
return ($checksum % 10 === 0);
}

/**
* Checks if a czech phone number is valid.
*
* @param string phone number to check
* @return boolean
*/
public static function phone($number)
{
// Remove all non-digit characters from the number
$number = preg_replace('/\D+/', '', $number);

if (strlen($number) == 9 OR strlen($number) == 12)
return true;

return false;
}


/**
* Checks whether a string consists of alphabetical characters only.
*
* @param string input string
* @param boolean trigger UTF-8 compatibility
* @return boolean
*/
public static function alpha($str, $utf8 = FALSE)
{
return (bool) ($utf8 == TRUE)
? preg_match('/^\pL++$/uD', (string) $str)
: ctype_alpha((string) $str);
}

/**
* Checks whether a string consists of alphabetical characters and numbers only.
*
* @param string input string
* @param boolean trigger UTF-8 compatibility
* @return boolean
*/
public static function alpha_numeric($str, $utf8 = FALSE)
{
return (bool) ($utf8 == TRUE)
? preg_match('/^[\pL\pN]++$/uD', (string) $str)
: ctype_alnum((string) $str);
}

/**
* Checks whether a string consists of alphabetical characters, numbers, underscores and dashes only.
*
* @param string input string
* @param boolean trigger UTF-8 compatibility
* @return boolean
*/
public static function alpha_dash($str, $utf8 = FALSE)
{
return (bool) ($utf8 == TRUE)
? preg_match('/^[-\pL\pN_]++$/uD', (string) $str)
: preg_match('/^[-a-z0-9_]++$/iD', (string) $str);
}

/**
* Checks whether a string consists of digits only (no dots or dashes).
*
* @param string input string
* @param boolean trigger UTF-8 compatibility
* @return boolean
*/
public static function digit($str, $utf8 = FALSE)
{
return (bool) ($utf8 == TRUE)
? preg_match('/^\pN++$/uD', (string) $str)
: ctype_digit((string) $str);
}

/**
* Checks whether a string is a valid number (negative and decimal numbers allowed).
*
* @param string input string
* @return boolean
*/
public static function numeric($str)
{
return (is_numeric($str) AND preg_match('/^[-0-9.]++$/D', $str));
}

/**
* Checks whether a string is valid ulogd active count
*
* @author Michal Kliment
* @param string input string
* @return boolean
*/
public static function ulogd_active_count($str)
{
return preg_match('/^[0-9]+(\.[0-9]+)?%?$/', $str);
}

/**
* Checks whether a string is a valid text.
*
* @param string $str
* @return boolean
*/
public static function standard_text($str)
{
return preg_match('/^[-\pL\pN\pZ_]++$/uD', (string) $str);
}

/**
* Checks whether a array is valid date
*
* @param array $date
* @return boolean
*/
public static function date($date = array())
{
if (!is_array($date) ||
!array_key_exists('year', $date) ||
!array_key_exists('month', $date) ||
!array_key_exists('day', $date))
{
return FALSE;
}
return (count(date::days($date['month'],$date['year'])) >= $date['day']);
}

/**
* Checks whether a string is valid date
*
* @author Michal Kliment
* @param string $str
* @return boolean
*/
public static function date_string($str)
{
if (!preg_match ("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/", $str, $matches))
return false;
else
return valid::date(array('year' => $matches[1], 'month' => $matches[2], 'day' => $matches[3]));
}

/**
* Checks whether a string is valid MAC address
*
* @author Michal Kliment
* @param string $str
* @return boolean
*/
public static function mac_address($str)
{
return preg_match ("/^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/", $str);
}

/**
* Checks whether a string is valid IP address
*
* @author Michal Kliment
* @param string $str
* @return boolean
*/
public static function ip_address($str)
{
$str = str_replace("\n", ",", $str);
return preg_match ("/^(((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9]),?)+$/", $str);
}

/**
* Checks whether a string is valid URL suffix
*
* @author Michal Kliment
* @param string $str
* @return boolean
*/
public static function suffix ($str)
{
return preg_match ("/^\/([^\/]+\/)*$/", $str);
}

/**
* Checks whether a string is valid network address range (in format eg. 10.0.0.0/8)
*
* @author MIchal Kliment
* @param string $str
* @return boolean
*/
public static function address_ranges ($str)
{
$str = str_replace("\n", ",", $str);
if (!preg_match("/^((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])(\/([0-9]|([1-2][0-9])|(3[0-2])))?(,((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])\.((25[0-5])|(2[0-4][0-9])|(1[0-9][0-9])|([1-9][0-9])|[0-9])(\/([0-9]|([1-2][0-9])|(3[0-2])))?)*$/",$str,$matches))
return false;
else
{
$ranges = explode (',', $str);

foreach ($ranges as $address)
{
if (strpos($address, '/') !== FALSE)
{
list ($address, $mask) = explode ('/',$address);
if ((ip2long($address) & ip2long(network::cidr2netmask ($mask))) != ip2long($address))
return false;
}
}
return true;
}
}

/**
* Checks whether string is valid GPS string
*
* @author Michal Kliment
* @param string $str
* @return boolean
*/
public static function gps_string ($str)
{
if ($str == '')
return true;

$c = explode(" ",trim($str));

if (count($c) != 2)
return false;

if (substr(trim($c[0]),-2,1) != 'N' || substr(trim($c[1]),-1) != 'E')
return false;

$north_gps = substr(trim($c[0]),0,-2);
$east_gps = substr(trim($c[1]), 0, -1);

return (
gps::is_valid_degrees_coordinate($north_gps) &&
gps::is_valid_degrees_coordinate($east_gps)
);
}

/**
* Checks whether string is valid byte-string
*
* @author Michal Kliment
* @param string $str
* @return boolean
*/
public static function byte_size ($str)
{
return preg_match ("/^[0-9]+(\.[0-9]+)?[k|M|G|T]?B$/", $str);
}
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/**
* Checks whether string is valid for upload_max_filesize and
* post_max_size values
*
* @author David Raska
* @param string $str
* @return boolean
*/
public static function file_size($str)
{
return preg_match ("/^([1-9][0-9]*[k|M|G]?)$/i", $str);
}
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/**
* Checks whether string is valid speed size (eg. in format 2M/8M)
*
* @author Michal Kliment
* @param type $str
* @return type
*/
public static function speed_size ($str)
{
return preg_match ("/^([0-9]+[k|M|G|T]?)(\/[0-9]+[k|M|G|T]?)?$/i", $str);
}

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/**
* Checks whether number is included in range
*
* @author Jan Dubina
* @param type $number
* @return boolean
*/
public static function range ($number, $min = 0, $max = 100)
{
return ($number >= $min) && ($number <= $max);
}
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/**
* Checks whether string is valid bank account number
*
* @author Jan Dubina
* @param string $str
* @return boolean
*/
public static function bank_account ($str)
{
return preg_match ("/^([0-9]{1,6}-)?([0-9]{2,10})\/[0-9]{4}$/", $str);
}
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} // End valid