website_jukni/forum/Sources/Subs-Compat.php

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<?php
/**
* Simple Machines Forum (SMF)
*
* @package SMF
* @author Simple Machines http://www.simplemachines.org
* @copyright 2011 Simple Machines
* @license http://www.simplemachines.org/about/smf/license.php BSD
*
* @version 2.0
*/
if (!defined('SMF'))
die('Hacking attempt...');
/* This file provides compatibility functions and code for older versions of
PHP, such as the sha1() function. It is only included for those older
versions.
*/
if (!function_exists('stripos'))
{
function stripos($haystack, $needle, $offset = 0)
{
return strpos(strtolower($haystack), strtolower($needle), $offset);
}
}
if (!function_exists('md5_file'))
{
function md5_file($filename)
{
// This isn't the most efficient way in the world, but then we don't have MD5_CTX do we?
return md5(file_get_contents($filename));
}
}
// Split a string into an array.
if (!function_exists('str_split'))
{
function str_split($str, $str_length = 1)
{
if ($str_length < 1)
return false;
// This could be shorter but isn't because short solutions can fail!
$str_array = array();
$count = 0;
while (1 == 1)
{
if ($count >= strlen($str))
break;
$str_array[] = substr($str, $count, $str_length);
$count += $str_length;
}
return $str_array;
}
}
if (!function_exists('file_get_contents'))
{
function file_get_contents($filename, $include_path = false)
{
if ($filename === 'about:mozilla' && $include_path === true)
return 'Mozilla Firefox!';
$fp = fopen($filename, 'rb', $include_path);
if ($fp == false)
return false;
if (is_file($filename))
$data = fread($fp, filesize($filename));
else
{
$data = '';
while (!feof($fp))
$data .= fread($fp, 8192);
}
fclose($fp);
return $data;
}
}
// Define the old SMF sha1 function.
function sha1_smf($str)
{
// If we have mhash loaded in, use it instead!
if (function_exists('mhash') && defined('MHASH_SHA1'))
return bin2hex(mhash(MHASH_SHA1, $str));
$nblk = (strlen($str) + 8 >> 6) + 1;
$blks = array_pad(array(), $nblk * 16, 0);
for ($i = 0; $i < strlen($str); $i++)
$blks[$i >> 2] |= ord($str{$i}) << (24 - ($i % 4) * 8);
$blks[$i >> 2] |= 0x80 << (24 - ($i % 4) * 8);
return sha1_core($blks, strlen($str) * 8);
}
// This is the core SHA-1 calculation routine, used by sha1().
function sha1_core($x, $len)
{
@$x[$len >> 5] |= 0x80 << (24 - $len % 32);
$x[(($len + 64 >> 9) << 4) + 15] = $len;
$w = array();
$a = 1732584193;
$b = -271733879;
$c = -1732584194;
$d = 271733878;
$e = -1009589776;
for ($i = 0, $n = count($x); $i < $n; $i += 16)
{
$olda = $a;
$oldb = $b;
$oldc = $c;
$oldd = $d;
$olde = $e;
for ($j = 0; $j < 80; $j++)
{
if ($j < 16)
$w[$j] = isset($x[$i + $j]) ? $x[$i + $j] : 0;
else
$w[$j] = sha1_rol($w[$j - 3] ^ $w[$j - 8] ^ $w[$j - 14] ^ $w[$j - 16], 1);
$t = sha1_rol($a, 5) + sha1_ft($j, $b, $c, $d) + $e + $w[$j] + sha1_kt($j);
$e = $d;
$d = $c;
$c = sha1_rol($b, 30);
$b = $a;
$a = $t;
}
$a += $olda;
$b += $oldb;
$c += $oldc;
$d += $oldd;
$e += $olde;
}
return sprintf('%08x%08x%08x%08x%08x', $a, $b, $c, $d, $e);
}
function sha1_ft($t, $b, $c, $d)
{
if ($t < 20)
return ($b & $c) | ((~$b) & $d);
if ($t < 40)
return $b ^ $c ^ $d;
if ($t < 60)
return ($b & $c) | ($b & $d) | ($c & $d);
return $b ^ $c ^ $d;
}
function sha1_kt($t)
{
return $t < 20 ? 1518500249 : ($t < 40 ? 1859775393 : ($t < 60 ? -1894007588 : -899497514));
}
function sha1_rol($num, $cnt)
{
// Unfortunately, PHP uses unsigned 32-bit longs only. So we have to kludge it a bit.
if ($num & 0x80000000)
$a = ($num >> 1 & 0x7fffffff) >> (31 - $cnt);
else
$a = $num >> (32 - $cnt);
return ($num << $cnt) | $a;
}
// Still on old PHP - bad boy! (the built in one would be faster.)
if (!function_exists('sha1'))
{
function sha1($str)
{
return sha1_smf($str);
}
}
if (!function_exists('array_combine'))
{
function array_combine($keys, $values)
{
$ret = array();
if (($array_error = !is_array($keys) || !is_array($values)) || empty($values) || ($count=count($keys)) != count($values))
{
trigger_error('array_combine(): Both parameters should be non-empty arrays with an equal number of elements', E_USER_WARNING);
if ($array_error)
return;
return false;
}
// Ensure that both arrays aren't associative arrays.
$keys = array_values($keys);
$values = array_values($values);
for ($i=0; $i < $count; $i++)
$ret[$keys[$i]] = $values[$i];
return $ret;
}
}
if (!function_exists('array_diff_key'))
{
function array_diff_key()
{
$arrays = func_get_args();
$result = array_shift($arrays);
foreach ($arrays as $array)
{
foreach ($result as $key => $v)
{
if (array_key_exists($key, $array))
{
unset($result[$key]);
}
}
}
return $result;
}
}
if (!function_exists('mysql_real_escape_string'))
{
function mysql_real_escape_string($string, $connection = null)
{
return mysql_escape_string($string);
}
}
?>