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<?php
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$web = 'index.php';
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if (in_array('phar', stream_get_wrappers()) && class_exists('Phar', 0)) {
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Phar::interceptFileFuncs();
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set_include_path('phar://' . __FILE__ . PATH_SEPARATOR . get_include_path());
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Phar::webPhar(null, $web);
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include 'phar://' . __FILE__ . '/' . Extract_Phar::START;
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return;
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}
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if (@(isset($_SERVER['REQUEST_URI']) && isset($_SERVER['REQUEST_METHOD']) && ($_SERVER['REQUEST_METHOD'] == 'GET' || $_SERVER['REQUEST_METHOD'] == 'POST'))) {
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Extract_Phar::go(true);
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$mimes = array(
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'phps' => 2,
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'c' => 'text/plain',
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'cc' => 'text/plain',
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'cpp' => 'text/plain',
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'c++' => 'text/plain',
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'dtd' => 'text/plain',
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'h' => 'text/plain',
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'log' => 'text/plain',
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'rng' => 'text/plain',
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'txt' => 'text/plain',
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'xsd' => 'text/plain',
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'php' => 1,
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'inc' => 1,
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'avi' => 'video/avi',
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'bmp' => 'image/bmp',
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'css' => 'text/css',
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'gif' => 'image/gif',
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'htm' => 'text/html',
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'html' => 'text/html',
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'htmls' => 'text/html',
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'ico' => 'image/x-ico',
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'jpe' => 'image/jpeg',
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'jpg' => 'image/jpeg',
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'jpeg' => 'image/jpeg',
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'js' => 'application/x-javascript',
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'midi' => 'audio/midi',
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'mid' => 'audio/midi',
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'mod' => 'audio/mod',
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'mov' => 'movie/quicktime',
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'mp3' => 'audio/mp3',
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'mpg' => 'video/mpeg',
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'mpeg' => 'video/mpeg',
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'pdf' => 'application/pdf',
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'png' => 'image/png',
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'swf' => 'application/shockwave-flash',
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'tif' => 'image/tiff',
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'tiff' => 'image/tiff',
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'wav' => 'audio/wav',
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'xbm' => 'image/xbm',
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'xml' => 'text/xml',
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);
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header("Cache-Control: no-cache, must-revalidate");
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header("Pragma: no-cache");
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$basename = basename(__FILE__);
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if (!strpos($_SERVER['REQUEST_URI'], $basename)) {
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chdir(Extract_Phar::$temp);
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include $web;
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return;
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}
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$pt = substr($_SERVER['REQUEST_URI'], strpos($_SERVER['REQUEST_URI'], $basename) + strlen($basename));
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if (!$pt || $pt == '/') {
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$pt = $web;
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header('HTTP/1.1 301 Moved Permanently');
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header('Location: ' . $_SERVER['REQUEST_URI'] . '/' . $pt);
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exit;
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}
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$a = realpath(Extract_Phar::$temp . DIRECTORY_SEPARATOR . $pt);
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if (!$a || strlen(dirname($a)) < strlen(Extract_Phar::$temp)) {
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header('HTTP/1.0 404 Not Found');
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echo "<html>\n <head>\n <title>File Not Found<title>\n </head>\n <body>\n <h1>404 - File Not Found</h1>\n </body>\n</html>";
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exit;
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}
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$b = pathinfo($a);
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if (!isset($b['extension'])) {
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header('Content-Type: text/plain');
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header('Content-Length: ' . filesize($a));
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readfile($a);
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exit;
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}
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if (isset($mimes[$b['extension']])) {
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if ($mimes[$b['extension']] === 1) {
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include $a;
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exit;
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}
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if ($mimes[$b['extension']] === 2) {
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highlight_file($a);
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exit;
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}
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header('Content-Type: ' .$mimes[$b['extension']]);
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header('Content-Length: ' . filesize($a));
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readfile($a);
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exit;
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}
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}
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class Extract_Phar
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{
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static $temp;
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static $origdir;
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const GZ = 0x1000;
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const BZ2 = 0x2000;
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const MASK = 0x3000;
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const START = 'index.php';
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const LEN = 6643;
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static function go($return = false)
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{
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$fp = fopen(__FILE__, 'rb');
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fseek($fp, self::LEN);
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$L = unpack('V', $a = fread($fp, 4));
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$m = '';
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do {
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$read = 8192;
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if ($L[1] - strlen($m) < 8192) {
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$read = $L[1] - strlen($m);
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}
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$last = fread($fp, $read);
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$m .= $last;
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} while (strlen($last) && strlen($m) < $L[1]);
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if (strlen($m) < $L[1]) {
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die('ERROR: manifest length read was "' .
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strlen($m) .'" should be "' .
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$L[1] . '"');
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}
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$info = self::_unpack($m);
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$f = $info['c'];
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if ($f & self::GZ) {
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if (!function_exists('gzinflate')) {
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die('Error: zlib extension is not enabled -' .
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' gzinflate() function needed for zlib-compressed .phars');
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}
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}
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if ($f & self::BZ2) {
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if (!function_exists('bzdecompress')) {
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die('Error: bzip2 extension is not enabled -' .
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' bzdecompress() function needed for bz2-compressed .phars');
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}
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}
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$temp = self::tmpdir();
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if (!$temp || !is_writable($temp)) {
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$sessionpath = session_save_path();
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if (strpos ($sessionpath, ";") !== false)
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$sessionpath = substr ($sessionpath, strpos ($sessionpath, ";")+1);
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if (!file_exists($sessionpath) || !is_dir($sessionpath)) {
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die('Could not locate temporary directory to extract phar');
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}
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$temp = $sessionpath;
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}
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$temp .= '/pharextract/'.basename(__FILE__, '.phar');
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self::$temp = $temp;
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self::$origdir = getcwd();
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@mkdir($temp, 0777, true);
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$temp = realpath($temp);
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if (!file_exists($temp . DIRECTORY_SEPARATOR . md5_file(__FILE__))) {
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self::_removeTmpFiles($temp, getcwd());
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@mkdir($temp, 0777, true);
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@file_put_contents($temp . '/' . md5_file(__FILE__), '');
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foreach ($info['m'] as $path => $file) {
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$a = !file_exists(dirname($temp . '/' . $path));
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@mkdir(dirname($temp . '/' . $path), 0777, true);
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clearstatcache();
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if ($path[strlen($path) - 1] == '/') {
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@mkdir($temp . '/' . $path, 0777);
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} else {
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file_put_contents($temp . '/' . $path, self::extractFile($path, $file, $fp));
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@chmod($temp . '/' . $path, 0666);
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}
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}
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}
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chdir($temp);
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if (!$return) {
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include self::START;
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}
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}
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static function tmpdir()
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{
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if (strpos(PHP_OS, 'WIN') !== false) {
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if ($var = getenv('TMP') ? getenv('TMP') : getenv('TEMP')) {
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return $var;
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}
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if (is_dir('/temp') || mkdir('/temp')) {
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return realpath('/temp');
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}
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return false;
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}
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if ($var = getenv('TMPDIR')) {
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return $var;
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}
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return realpath('/tmp');
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}
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static function _unpack($m)
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{
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$info = unpack('V', substr($m, 0, 4));
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$l = unpack('V', substr($m, 10, 4));
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$m = substr($m, 14 + $l[1]);
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$s = unpack('V', substr($m, 0, 4));
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$o = 0;
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$start = 4 + $s[1];
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$ret['c'] = 0;
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for ($i = 0; $i < $info[1]; $i++) {
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$len = unpack('V', substr($m, $start, 4));
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$start += 4;
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$savepath = substr($m, $start, $len[1]);
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$start += $len[1];
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$ret['m'][$savepath] = array_values(unpack('Va/Vb/Vc/Vd/Ve/Vf', substr($m, $start, 24)));
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$ret['m'][$savepath][3] = sprintf('%u', $ret['m'][$savepath][3]
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& 0xffffffff);
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$ret['m'][$savepath][7] = $o;
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$o += $ret['m'][$savepath][2];
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$start += 24 + $ret['m'][$savepath][5];
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$ret['c'] |= $ret['m'][$savepath][4] & self::MASK;
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}
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return $ret;
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}
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static function extractFile($path, $entry, $fp)
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{
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$data = '';
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$c = $entry[2];
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while ($c) {
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if ($c < 8192) {
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$data .= @fread($fp, $c);
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$c = 0;
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} else {
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$c -= 8192;
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$data .= @fread($fp, 8192);
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}
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}
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if ($entry[4] & self::GZ) {
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$data = gzinflate($data);
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} elseif ($entry[4] & self::BZ2) {
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$data = bzdecompress($data);
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}
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if (strlen($data) != $entry[0]) {
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die("Invalid internal .phar file (size error " . strlen($data) . " != " .
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|
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$stat[7] . ")");
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}
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if ($entry[3] != sprintf("%u", crc32($data) & 0xffffffff)) {
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die("Invalid internal .phar file (checksum error)");
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}
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return $data;
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}
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static function _removeTmpFiles($temp, $origdir)
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|
|
{
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|
|
chdir($temp);
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|
foreach (glob('*') as $f) {
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|
if (file_exists($f)) {
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|
is_dir($f) ? @rmdir($f) : @unlink($f);
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|
if (file_exists($f) && is_dir($f)) {
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|
self::_removeTmpFiles($f, getcwd());
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}
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}
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}
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|
|
@rmdir($temp);
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|
|
clearstatcache();
|
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|
|
chdir($origdir);
|
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|
|
}
|
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|
}
|
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|
|
Extract_Phar::go();
|
|
|
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|
|
__HALT_COMPILER(); ?>
|
|
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|
|
|
random_compat.phar byte_safe_strings.phpU <00>B<EFBFBD>ZU
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|
|
<EFBFBD><EFBFBD><1A> cast_to_int.phpF
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<00>B<EFBFBD>ZF
|
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|
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|
:)<29>%<25> error_polyfill.php<68> <00>B<EFBFBD>Z<EFBFBD> "]<5D> index.phpM <00>B<EFBFBD>ZM t:<3A>Ķ random_bytes_com_dotnet.phpW <00>B<EFBFBD>ZW <00>@<40> random_bytes_dev_urandom.php@ <00>B<EFBFBD>Z@ <00>*<2A><><EFBFBD> random_bytes_libsodium.php <00>B<EFBFBD>Z <00>;[c<> ! random_bytes_libsodium_legacy.phpN <00>B<EFBFBD>ZN <00>^L<> random_bytes_mcrypt.php<68> <00>B<EFBFBD>Z<EFBFBD> <00>BS7<53> random_int.phpv <00>B<EFBFBD>Zv <17><><EFBFBD><EFBFBD> <?php
|
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|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
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|
|
|
|
* all copies or substantial portions of the Software.
|
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|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
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|
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|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
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|
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|
|
* SOFTWARE.
|
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|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('RandomCompat_strlen')) {
|
|
|
|
|
|
if (
|
|
|
|
|
|
defined('MB_OVERLOAD_STRING') &&
|
|
|
|
|
|
ini_get('mbstring.func_overload') & MB_OVERLOAD_STRING
|
|
|
|
|
|
) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* strlen() implementation that isn't brittle to mbstring.func_overload
|
|
|
|
|
|
*
|
|
|
|
|
|
* This version uses mb_strlen() in '8bit' mode to treat strings as raw
|
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|
|
|
|
* binary rather than UTF-8, ISO-8859-1, etc
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param string $binary_string
|
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|
|
|
|
*
|
|
|
|
|
|
* @throws TypeError
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return int
|
|
|
|
|
|
*/
|
|
|
|
|
|
function RandomCompat_strlen($binary_string)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (!is_string($binary_string)) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'RandomCompat_strlen() expects a string'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
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|
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|
|
|
|
return (int) mb_strlen($binary_string, '8bit');
|
|
|
|
|
|
}
|
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|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* strlen() implementation that isn't brittle to mbstring.func_overload
|
|
|
|
|
|
*
|
|
|
|
|
|
* This version just used the default strlen()
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param string $binary_string
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws TypeError
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return int
|
|
|
|
|
|
*/
|
|
|
|
|
|
function RandomCompat_strlen($binary_string)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (!is_string($binary_string)) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'RandomCompat_strlen() expects a string'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
return (int) strlen($binary_string);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('RandomCompat_substr')) {
|
|
|
|
|
|
|
|
|
|
|
|
if (
|
|
|
|
|
|
defined('MB_OVERLOAD_STRING')
|
|
|
|
|
|
&&
|
|
|
|
|
|
ini_get('mbstring.func_overload') & MB_OVERLOAD_STRING
|
|
|
|
|
|
) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* substr() implementation that isn't brittle to mbstring.func_overload
|
|
|
|
|
|
*
|
|
|
|
|
|
* This version uses mb_substr() in '8bit' mode to treat strings as raw
|
|
|
|
|
|
* binary rather than UTF-8, ISO-8859-1, etc
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param string $binary_string
|
|
|
|
|
|
* @param int $start
|
|
|
|
|
|
* @param int $length (optional)
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws TypeError
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return string
|
|
|
|
|
|
*/
|
|
|
|
|
|
function RandomCompat_substr($binary_string, $start, $length = null)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (!is_string($binary_string)) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'RandomCompat_substr(): First argument should be a string'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_int($start)) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'RandomCompat_substr(): Second argument should be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($length === null) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* mb_substr($str, 0, NULL, '8bit') returns an empty string on
|
|
|
|
|
|
* PHP 5.3, so we have to find the length ourselves.
|
|
|
|
|
|
*/
|
|
|
|
|
|
$length = RandomCompat_strlen($binary_string) - $start;
|
|
|
|
|
|
} elseif (!is_int($length)) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'RandomCompat_substr(): Third argument should be an integer, or omitted'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Consistency with PHP's behavior
|
|
|
|
|
|
if ($start === RandomCompat_strlen($binary_string) && $length === 0) {
|
|
|
|
|
|
return '';
|
|
|
|
|
|
}
|
|
|
|
|
|
if ($start > RandomCompat_strlen($binary_string)) {
|
|
|
|
|
|
return '';
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return (string) mb_substr($binary_string, $start, $length, '8bit');
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* substr() implementation that isn't brittle to mbstring.func_overload
|
|
|
|
|
|
*
|
|
|
|
|
|
* This version just uses the default substr()
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param string $binary_string
|
|
|
|
|
|
* @param int $start
|
|
|
|
|
|
* @param int $length (optional)
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws TypeError
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return string
|
|
|
|
|
|
*/
|
|
|
|
|
|
function RandomCompat_substr($binary_string, $start, $length = null)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (!is_string($binary_string)) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'RandomCompat_substr(): First argument should be a string'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_int($start)) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'RandomCompat_substr(): Second argument should be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($length !== null) {
|
|
|
|
|
|
if (!is_int($length)) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'RandomCompat_substr(): Third argument should be an integer, or omitted'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return (string) substr($binary_string, $start, $length);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return (string) substr($binary_string, $start);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
<?php
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('RandomCompat_intval')) {
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Cast to an integer if we can, safely.
|
|
|
|
|
|
*
|
|
|
|
|
|
* If you pass it a float in the range (~PHP_INT_MAX, PHP_INT_MAX)
|
|
|
|
|
|
* (non-inclusive), it will sanely cast it to an int. If you it's equal to
|
|
|
|
|
|
* ~PHP_INT_MAX or PHP_INT_MAX, we let it fail as not an integer. Floats
|
|
|
|
|
|
* lose precision, so the <= and => operators might accidentally let a float
|
|
|
|
|
|
* through.
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param int|float $number The number we want to convert to an int
|
|
|
|
|
|
* @param bool $fail_open Set to true to not throw an exception
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return float|int
|
|
|
|
|
|
* @psalm-suppress InvalidReturnType
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws TypeError
|
|
|
|
|
|
*/
|
|
|
|
|
|
function RandomCompat_intval($number, $fail_open = false)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (is_int($number) || is_float($number)) {
|
|
|
|
|
|
$number += 0;
|
|
|
|
|
|
} elseif (is_numeric($number)) {
|
|
|
|
|
|
$number += 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (
|
|
|
|
|
|
is_float($number)
|
|
|
|
|
|
&&
|
|
|
|
|
|
$number > ~PHP_INT_MAX
|
|
|
|
|
|
&&
|
|
|
|
|
|
$number < PHP_INT_MAX
|
|
|
|
|
|
) {
|
|
|
|
|
|
$number = (int) $number;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (is_int($number)) {
|
|
|
|
|
|
return (int) $number;
|
|
|
|
|
|
} elseif (!$fail_open) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'Expected an integer.'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
return $number;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
<?php
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!class_exists('Error', false)) {
|
|
|
|
|
|
// We can't really avoid making this extend Exception in PHP 5.
|
|
|
|
|
|
class Error extends Exception
|
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!class_exists('TypeError', false)) {
|
|
|
|
|
|
if (is_subclass_of('Error', 'Exception')) {
|
|
|
|
|
|
class TypeError extends Error
|
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
|
|
class TypeError extends Exception
|
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
<?php
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* @version 2.0.10
|
|
|
|
|
|
* @released 2017-03-13
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!defined('PHP_VERSION_ID')) {
|
|
|
|
|
|
// This constant was introduced in PHP 5.2.7
|
|
|
|
|
|
$RandomCompatversion = array_map('intval', explode('.', PHP_VERSION));
|
|
|
|
|
|
define(
|
|
|
|
|
|
'PHP_VERSION_ID',
|
|
|
|
|
|
$RandomCompatversion[0] * 10000
|
|
|
|
|
|
+ $RandomCompatversion[1] * 100
|
|
|
|
|
|
+ $RandomCompatversion[2]
|
|
|
|
|
|
);
|
|
|
|
|
|
$RandomCompatversion = null;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* PHP 7.0.0 and newer have these functions natively.
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (PHP_VERSION_ID >= 70000) {
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!defined('RANDOM_COMPAT_READ_BUFFER')) {
|
|
|
|
|
|
define('RANDOM_COMPAT_READ_BUFFER', 8);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
$RandomCompatDIR = dirname(__FILE__);
|
|
|
|
|
|
|
|
|
|
|
|
require_once $RandomCompatDIR . '/byte_safe_strings.php';
|
|
|
|
|
|
require_once $RandomCompatDIR . '/cast_to_int.php';
|
|
|
|
|
|
require_once $RandomCompatDIR . '/error_polyfill.php';
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('random_bytes')) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* PHP 5.2.0 - 5.6.x way to implement random_bytes()
|
|
|
|
|
|
*
|
|
|
|
|
|
* We use conditional statements here to define the function in accordance
|
|
|
|
|
|
* to the operating environment. It's a micro-optimization.
|
|
|
|
|
|
*
|
|
|
|
|
|
* In order of preference:
|
|
|
|
|
|
* 1. Use libsodium if available.
|
|
|
|
|
|
* 2. fread() /dev/urandom if available (never on Windows)
|
|
|
|
|
|
* 3. mcrypt_create_iv($bytes, MCRYPT_DEV_URANDOM)
|
|
|
|
|
|
* 4. COM('CAPICOM.Utilities.1')->GetRandom()
|
|
|
|
|
|
*
|
|
|
|
|
|
* See RATIONALE.md for our reasoning behind this particular order
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (extension_loaded('libsodium')) {
|
|
|
|
|
|
// See random_bytes_libsodium.php
|
|
|
|
|
|
if (PHP_VERSION_ID >= 50300 && is_callable('\\Sodium\\randombytes_buf')) {
|
|
|
|
|
|
require_once $RandomCompatDIR . '/random_bytes_libsodium.php';
|
|
|
|
|
|
} elseif (method_exists('Sodium', 'randombytes_buf')) {
|
|
|
|
|
|
require_once $RandomCompatDIR . '/random_bytes_libsodium_legacy.php';
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Reading directly from /dev/urandom:
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (DIRECTORY_SEPARATOR === '/') {
|
|
|
|
|
|
// DIRECTORY_SEPARATOR === '/' on Unix-like OSes -- this is a fast
|
|
|
|
|
|
// way to exclude Windows.
|
|
|
|
|
|
$RandomCompatUrandom = true;
|
|
|
|
|
|
$RandomCompat_basedir = ini_get('open_basedir');
|
|
|
|
|
|
|
|
|
|
|
|
if (!empty($RandomCompat_basedir)) {
|
|
|
|
|
|
$RandomCompat_open_basedir = explode(
|
|
|
|
|
|
PATH_SEPARATOR,
|
|
|
|
|
|
strtolower($RandomCompat_basedir)
|
|
|
|
|
|
);
|
|
|
|
|
|
$RandomCompatUrandom = (array() !== array_intersect(
|
|
|
|
|
|
array('/dev', '/dev/', '/dev/urandom'),
|
|
|
|
|
|
$RandomCompat_open_basedir
|
|
|
|
|
|
));
|
|
|
|
|
|
$RandomCompat_open_basedir = null;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (
|
|
|
|
|
|
!is_callable('random_bytes')
|
|
|
|
|
|
&&
|
|
|
|
|
|
$RandomCompatUrandom
|
|
|
|
|
|
&&
|
|
|
|
|
|
@is_readable('/dev/urandom')
|
|
|
|
|
|
) {
|
|
|
|
|
|
// Error suppression on is_readable() in case of an open_basedir
|
|
|
|
|
|
// or safe_mode failure. All we care about is whether or not we
|
|
|
|
|
|
// can read it at this point. If the PHP environment is going to
|
|
|
|
|
|
// panic over trying to see if the file can be read in the first
|
|
|
|
|
|
// place, that is not helpful to us here.
|
|
|
|
|
|
|
|
|
|
|
|
// See random_bytes_dev_urandom.php
|
|
|
|
|
|
require_once $RandomCompatDIR . '/random_bytes_dev_urandom.php';
|
|
|
|
|
|
}
|
|
|
|
|
|
// Unset variables after use
|
|
|
|
|
|
$RandomCompat_basedir = null;
|
|
|
|
|
|
} else {
|
|
|
|
|
|
$RandomCompatUrandom = false;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* mcrypt_create_iv()
|
|
|
|
|
|
*
|
|
|
|
|
|
* We only want to use mcypt_create_iv() if:
|
|
|
|
|
|
*
|
|
|
|
|
|
* - random_bytes() hasn't already been defined
|
|
|
|
|
|
* - the mcrypt extensions is loaded
|
|
|
|
|
|
* - One of these two conditions is true:
|
|
|
|
|
|
* - We're on Windows (DIRECTORY_SEPARATOR !== '/')
|
|
|
|
|
|
* - We're not on Windows and /dev/urandom is readabale
|
|
|
|
|
|
* (i.e. we're not in a chroot jail)
|
|
|
|
|
|
* - Special case:
|
|
|
|
|
|
* - If we're not on Windows, but the PHP version is between
|
|
|
|
|
|
* 5.6.10 and 5.6.12, we don't want to use mcrypt. It will
|
|
|
|
|
|
* hang indefinitely. This is bad.
|
|
|
|
|
|
* - If we're on Windows, we want to use PHP >= 5.3.7 or else
|
|
|
|
|
|
* we get insufficient entropy errors.
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (
|
|
|
|
|
|
!is_callable('random_bytes')
|
|
|
|
|
|
&&
|
|
|
|
|
|
// Windows on PHP < 5.3.7 is broken, but non-Windows is not known to be.
|
|
|
|
|
|
(DIRECTORY_SEPARATOR === '/' || PHP_VERSION_ID >= 50307)
|
|
|
|
|
|
&&
|
|
|
|
|
|
// Prevent this code from hanging indefinitely on non-Windows;
|
|
|
|
|
|
// see https://bugs.php.net/bug.php?id=69833
|
|
|
|
|
|
(
|
|
|
|
|
|
DIRECTORY_SEPARATOR !== '/' ||
|
|
|
|
|
|
(PHP_VERSION_ID <= 50609 || PHP_VERSION_ID >= 50613)
|
|
|
|
|
|
)
|
|
|
|
|
|
&&
|
|
|
|
|
|
extension_loaded('mcrypt')
|
|
|
|
|
|
) {
|
|
|
|
|
|
// See random_bytes_mcrypt.php
|
|
|
|
|
|
require_once $RandomCompatDIR . '/random_bytes_mcrypt.php';
|
|
|
|
|
|
}
|
|
|
|
|
|
$RandomCompatUrandom = null;
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* This is a Windows-specific fallback, for when the mcrypt extension
|
|
|
|
|
|
* isn't loaded.
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (
|
|
|
|
|
|
!is_callable('random_bytes')
|
|
|
|
|
|
&&
|
|
|
|
|
|
extension_loaded('com_dotnet')
|
|
|
|
|
|
&&
|
|
|
|
|
|
class_exists('COM')
|
|
|
|
|
|
) {
|
|
|
|
|
|
$RandomCompat_disabled_classes = preg_split(
|
|
|
|
|
|
'#\s*,\s*#',
|
|
|
|
|
|
strtolower(ini_get('disable_classes'))
|
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
|
|
if (!in_array('com', $RandomCompat_disabled_classes)) {
|
|
|
|
|
|
try {
|
|
|
|
|
|
$RandomCompatCOMtest = new COM('CAPICOM.Utilities.1');
|
|
|
|
|
|
if (method_exists($RandomCompatCOMtest, 'GetRandom')) {
|
|
|
|
|
|
// See random_bytes_com_dotnet.php
|
|
|
|
|
|
require_once $RandomCompatDIR . '/random_bytes_com_dotnet.php';
|
|
|
|
|
|
}
|
|
|
|
|
|
} catch (com_exception $e) {
|
|
|
|
|
|
// Don't try to use it.
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
$RandomCompat_disabled_classes = null;
|
|
|
|
|
|
$RandomCompatCOMtest = null;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* throw new Exception
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (!is_callable('random_bytes')) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* We don't have any more options, so let's throw an exception right now
|
|
|
|
|
|
* and hope the developer won't let it fail silently.
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param mixed $length
|
|
|
|
|
|
* @psalm-suppress MissingReturnType
|
|
|
|
|
|
* @throws Exception
|
|
|
|
|
|
* @return string
|
|
|
|
|
|
*/
|
|
|
|
|
|
function random_bytes($length)
|
|
|
|
|
|
{
|
|
|
|
|
|
unset($length); // Suppress "variable not used" warnings.
|
|
|
|
|
|
throw new Exception(
|
|
|
|
|
|
'There is no suitable CSPRNG installed on your system'
|
|
|
|
|
|
);
|
|
|
|
|
|
return '';
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('random_int')) {
|
|
|
|
|
|
require_once $RandomCompatDIR . '/random_int.php';
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
$RandomCompatDIR = null;
|
|
|
|
|
|
<?php
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('random_bytes')) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Windows with PHP < 5.3.0 will not have the function
|
|
|
|
|
|
* openssl_random_pseudo_bytes() available, so let's use
|
|
|
|
|
|
* CAPICOM to work around this deficiency.
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param int $bytes
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws Exception
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return string
|
|
|
|
|
|
*/
|
|
|
|
|
|
function random_bytes($bytes)
|
|
|
|
|
|
{
|
|
|
|
|
|
try {
|
|
|
|
|
|
$bytes = RandomCompat_intval($bytes);
|
|
|
|
|
|
} catch (TypeError $ex) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'random_bytes(): $bytes must be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($bytes < 1) {
|
|
|
|
|
|
throw new Error(
|
|
|
|
|
|
'Length must be greater than 0'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
$buf = '';
|
|
|
|
|
|
if (!class_exists('COM')) {
|
|
|
|
|
|
throw new Error(
|
|
|
|
|
|
'COM does not exist'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
$util = new COM('CAPICOM.Utilities.1');
|
|
|
|
|
|
$execCount = 0;
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Let's not let it loop forever. If we run N times and fail to
|
|
|
|
|
|
* get N bytes of random data, then CAPICOM has failed us.
|
|
|
|
|
|
*/
|
|
|
|
|
|
do {
|
|
|
|
|
|
$buf .= base64_decode($util->GetRandom($bytes, 0));
|
|
|
|
|
|
if (RandomCompat_strlen($buf) >= $bytes) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Return our random entropy buffer here:
|
|
|
|
|
|
*/
|
|
|
|
|
|
return RandomCompat_substr($buf, 0, $bytes);
|
|
|
|
|
|
}
|
|
|
|
|
|
++$execCount;
|
|
|
|
|
|
} while ($execCount < $bytes);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* If we reach here, PHP has failed us.
|
|
|
|
|
|
*/
|
|
|
|
|
|
throw new Exception(
|
|
|
|
|
|
'Could not gather sufficient random data'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
}<?php
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!defined('RANDOM_COMPAT_READ_BUFFER')) {
|
|
|
|
|
|
define('RANDOM_COMPAT_READ_BUFFER', 8);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('random_bytes')) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Unless open_basedir is enabled, use /dev/urandom for
|
|
|
|
|
|
* random numbers in accordance with best practices
|
|
|
|
|
|
*
|
|
|
|
|
|
* Why we use /dev/urandom and not /dev/random
|
|
|
|
|
|
* @ref http://sockpuppet.org/blog/2014/02/25/safely-generate-random-numbers
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param int $bytes
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws Exception
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return string
|
|
|
|
|
|
*/
|
|
|
|
|
|
function random_bytes($bytes)
|
|
|
|
|
|
{
|
|
|
|
|
|
static $fp = null;
|
|
|
|
|
|
/**
|
|
|
|
|
|
* This block should only be run once
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (empty($fp)) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* We use /dev/urandom if it is a char device.
|
|
|
|
|
|
* We never fall back to /dev/random
|
|
|
|
|
|
*/
|
|
|
|
|
|
$fp = fopen('/dev/urandom', 'rb');
|
|
|
|
|
|
if (!empty($fp)) {
|
|
|
|
|
|
$st = fstat($fp);
|
|
|
|
|
|
if (($st['mode'] & 0170000) !== 020000) {
|
|
|
|
|
|
fclose($fp);
|
|
|
|
|
|
$fp = false;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!empty($fp)) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* stream_set_read_buffer() does not exist in HHVM
|
|
|
|
|
|
*
|
|
|
|
|
|
* If we don't set the stream's read buffer to 0, PHP will
|
|
|
|
|
|
* internally buffer 8192 bytes, which can waste entropy
|
|
|
|
|
|
*
|
|
|
|
|
|
* stream_set_read_buffer returns 0 on success
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (is_callable('stream_set_read_buffer')) {
|
|
|
|
|
|
stream_set_read_buffer($fp, RANDOM_COMPAT_READ_BUFFER);
|
|
|
|
|
|
}
|
|
|
|
|
|
if (is_callable('stream_set_chunk_size')) {
|
|
|
|
|
|
stream_set_chunk_size($fp, RANDOM_COMPAT_READ_BUFFER);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
try {
|
|
|
|
|
|
$bytes = RandomCompat_intval($bytes);
|
|
|
|
|
|
} catch (TypeError $ex) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'random_bytes(): $bytes must be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($bytes < 1) {
|
|
|
|
|
|
throw new Error(
|
|
|
|
|
|
'Length must be greater than 0'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* This if() block only runs if we managed to open a file handle
|
|
|
|
|
|
*
|
|
|
|
|
|
* It does not belong in an else {} block, because the above
|
|
|
|
|
|
* if (empty($fp)) line is logic that should only be run once per
|
|
|
|
|
|
* page load.
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (!empty($fp)) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* @var int
|
|
|
|
|
|
*/
|
|
|
|
|
|
$remaining = $bytes;
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* @var string|bool
|
|
|
|
|
|
*/
|
|
|
|
|
|
$buf = '';
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* We use fread() in a loop to protect against partial reads
|
|
|
|
|
|
*/
|
|
|
|
|
|
do {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* @var string|bool
|
|
|
|
|
|
*/
|
|
|
|
|
|
$read = fread($fp, $remaining);
|
|
|
|
|
|
if (!is_string($read)) {
|
|
|
|
|
|
if ($read === false) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* We cannot safely read from the file. Exit the
|
|
|
|
|
|
* do-while loop and trigger the exception condition
|
|
|
|
|
|
*
|
|
|
|
|
|
* @var string|bool
|
|
|
|
|
|
*/
|
|
|
|
|
|
$buf = false;
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Decrease the number of bytes returned from remaining
|
|
|
|
|
|
*/
|
|
|
|
|
|
$remaining -= RandomCompat_strlen($read);
|
|
|
|
|
|
/**
|
|
|
|
|
|
* @var string|bool
|
|
|
|
|
|
*/
|
|
|
|
|
|
$buf = $buf . $read;
|
|
|
|
|
|
} while ($remaining > 0);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Is our result valid?
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (is_string($buf)) {
|
|
|
|
|
|
if (RandomCompat_strlen($buf) === $bytes) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Return our random entropy buffer here:
|
|
|
|
|
|
*/
|
|
|
|
|
|
return $buf;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* If we reach here, PHP has failed us.
|
|
|
|
|
|
*/
|
|
|
|
|
|
throw new Exception(
|
|
|
|
|
|
'Error reading from source device'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
<?php
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('random_bytes')) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* If the libsodium PHP extension is loaded, we'll use it above any other
|
|
|
|
|
|
* solution.
|
|
|
|
|
|
*
|
|
|
|
|
|
* libsodium-php project:
|
|
|
|
|
|
* @ref https://github.com/jedisct1/libsodium-php
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param int $bytes
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws Exception
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return string
|
|
|
|
|
|
*/
|
|
|
|
|
|
function random_bytes($bytes)
|
|
|
|
|
|
{
|
|
|
|
|
|
try {
|
|
|
|
|
|
$bytes = RandomCompat_intval($bytes);
|
|
|
|
|
|
} catch (TypeError $ex) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'random_bytes(): $bytes must be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($bytes < 1) {
|
|
|
|
|
|
throw new Error(
|
|
|
|
|
|
'Length must be greater than 0'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* \Sodium\randombytes_buf() doesn't allow more than 2147483647 bytes to be
|
|
|
|
|
|
* generated in one invocation.
|
|
|
|
|
|
*/
|
|
|
|
|
|
if ($bytes > 2147483647) {
|
|
|
|
|
|
$buf = '';
|
|
|
|
|
|
for ($i = 0; $i < $bytes; $i += 1073741824) {
|
|
|
|
|
|
$n = ($bytes - $i) > 1073741824
|
|
|
|
|
|
? 1073741824
|
|
|
|
|
|
: $bytes - $i;
|
|
|
|
|
|
$buf .= \Sodium\randombytes_buf($n);
|
|
|
|
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
|
|
$buf = \Sodium\randombytes_buf($bytes);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($buf !== false) {
|
|
|
|
|
|
if (RandomCompat_strlen($buf) === $bytes) {
|
|
|
|
|
|
return $buf;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* If we reach here, PHP has failed us.
|
|
|
|
|
|
*/
|
|
|
|
|
|
throw new Exception(
|
|
|
|
|
|
'Could not gather sufficient random data'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
<?php
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('random_bytes')) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* If the libsodium PHP extension is loaded, we'll use it above any other
|
|
|
|
|
|
* solution.
|
|
|
|
|
|
*
|
|
|
|
|
|
* libsodium-php project:
|
|
|
|
|
|
* @ref https://github.com/jedisct1/libsodium-php
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param int $bytes
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws Exception
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return string
|
|
|
|
|
|
*/
|
|
|
|
|
|
function random_bytes($bytes)
|
|
|
|
|
|
{
|
|
|
|
|
|
try {
|
|
|
|
|
|
$bytes = RandomCompat_intval($bytes);
|
|
|
|
|
|
} catch (TypeError $ex) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'random_bytes(): $bytes must be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($bytes < 1) {
|
|
|
|
|
|
throw new Error(
|
|
|
|
|
|
'Length must be greater than 0'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* @var string
|
|
|
|
|
|
*/
|
|
|
|
|
|
$buf = '';
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* \Sodium\randombytes_buf() doesn't allow more than 2147483647 bytes to be
|
|
|
|
|
|
* generated in one invocation.
|
|
|
|
|
|
*/
|
|
|
|
|
|
if ($bytes > 2147483647) {
|
|
|
|
|
|
for ($i = 0; $i < $bytes; $i += 1073741824) {
|
|
|
|
|
|
$n = ($bytes - $i) > 1073741824
|
|
|
|
|
|
? 1073741824
|
|
|
|
|
|
: $bytes - $i;
|
|
|
|
|
|
$buf .= Sodium::randombytes_buf((int) $n);
|
|
|
|
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
|
|
$buf .= Sodium::randombytes_buf((int) $bytes);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (is_string($buf)) {
|
|
|
|
|
|
if (RandomCompat_strlen($buf) === $bytes) {
|
|
|
|
|
|
return $buf;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* If we reach here, PHP has failed us.
|
|
|
|
|
|
*/
|
|
|
|
|
|
throw new Exception(
|
|
|
|
|
|
'Could not gather sufficient random data'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
<?php
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('random_bytes')) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Powered by ext/mcrypt (and thankfully NOT libmcrypt)
|
|
|
|
|
|
*
|
|
|
|
|
|
* @ref https://bugs.php.net/bug.php?id=55169
|
|
|
|
|
|
* @ref https://github.com/php/php-src/blob/c568ffe5171d942161fc8dda066bce844bdef676/ext/mcrypt/mcrypt.c#L1321-L1386
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param int $bytes
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws Exception
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return string
|
|
|
|
|
|
*/
|
|
|
|
|
|
function random_bytes($bytes)
|
|
|
|
|
|
{
|
|
|
|
|
|
try {
|
|
|
|
|
|
$bytes = RandomCompat_intval($bytes);
|
|
|
|
|
|
} catch (TypeError $ex) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'random_bytes(): $bytes must be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($bytes < 1) {
|
|
|
|
|
|
throw new Error(
|
|
|
|
|
|
'Length must be greater than 0'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
$buf = @mcrypt_create_iv($bytes, MCRYPT_DEV_URANDOM);
|
|
|
|
|
|
if (
|
|
|
|
|
|
$buf !== false
|
|
|
|
|
|
&&
|
|
|
|
|
|
RandomCompat_strlen($buf) === $bytes
|
|
|
|
|
|
) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Return our random entropy buffer here:
|
|
|
|
|
|
*/
|
|
|
|
|
|
return $buf;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* If we reach here, PHP has failed us.
|
|
|
|
|
|
*/
|
|
|
|
|
|
throw new Exception(
|
|
|
|
|
|
'Could not gather sufficient random data'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
<?php
|
|
|
|
|
|
|
|
|
|
|
|
if (!is_callable('random_int')) {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Random_* Compatibility Library
|
|
|
|
|
|
* for using the new PHP 7 random_* API in PHP 5 projects
|
|
|
|
|
|
*
|
|
|
|
|
|
* The MIT License (MIT)
|
|
|
|
|
|
*
|
|
|
|
|
|
* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Fetch a random integer between $min and $max inclusive
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param int $min
|
|
|
|
|
|
* @param int $max
|
|
|
|
|
|
*
|
|
|
|
|
|
* @throws Exception
|
|
|
|
|
|
*
|
|
|
|
|
|
* @return int
|
|
|
|
|
|
*/
|
|
|
|
|
|
function random_int($min, $max)
|
|
|
|
|
|
{
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Type and input logic checks
|
|
|
|
|
|
*
|
|
|
|
|
|
* If you pass it a float in the range (~PHP_INT_MAX, PHP_INT_MAX)
|
|
|
|
|
|
* (non-inclusive), it will sanely cast it to an int. If you it's equal to
|
|
|
|
|
|
* ~PHP_INT_MAX or PHP_INT_MAX, we let it fail as not an integer. Floats
|
|
|
|
|
|
* lose precision, so the <= and => operators might accidentally let a float
|
|
|
|
|
|
* through.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
try {
|
|
|
|
|
|
$min = RandomCompat_intval($min);
|
|
|
|
|
|
} catch (TypeError $ex) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'random_int(): $min must be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
try {
|
|
|
|
|
|
$max = RandomCompat_intval($max);
|
|
|
|
|
|
} catch (TypeError $ex) {
|
|
|
|
|
|
throw new TypeError(
|
|
|
|
|
|
'random_int(): $max must be an integer'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Now that we've verified our weak typing system has given us an integer,
|
|
|
|
|
|
* let's validate the logic then we can move forward with generating random
|
|
|
|
|
|
* integers along a given range.
|
|
|
|
|
|
*/
|
|
|
|
|
|
if ($min > $max) {
|
|
|
|
|
|
throw new Error(
|
|
|
|
|
|
'Minimum value must be less than or equal to the maximum value'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ($max === $min) {
|
|
|
|
|
|
return (int) $min;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Initialize variables to 0
|
|
|
|
|
|
*
|
|
|
|
|
|
* We want to store:
|
|
|
|
|
|
* $bytes => the number of random bytes we need
|
|
|
|
|
|
* $mask => an integer bitmask (for use with the &) operator
|
|
|
|
|
|
* so we can minimize the number of discards
|
|
|
|
|
|
*/
|
|
|
|
|
|
$attempts = $bits = $bytes = $mask = $valueShift = 0;
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* At this point, $range is a positive number greater than 0. It might
|
|
|
|
|
|
* overflow, however, if $max - $min > PHP_INT_MAX. PHP will cast it to
|
|
|
|
|
|
* a float and we will lose some precision.
|
|
|
|
|
|
*/
|
|
|
|
|
|
$range = $max - $min;
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Test for integer overflow:
|
|
|
|
|
|
*/
|
|
|
|
|
|
if (!is_int($range)) {
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Still safely calculate wider ranges.
|
|
|
|
|
|
* Provided by @CodesInChaos, @oittaa
|
|
|
|
|
|
*
|
|
|
|
|
|
* @ref https://gist.github.com/CodesInChaos/03f9ea0b58e8b2b8d435
|
|
|
|
|
|
*
|
|
|
|
|
|
* We use ~0 as a mask in this case because it generates all 1s
|
|
|
|
|
|
*
|
|
|
|
|
|
* @ref https://eval.in/400356 (32-bit)
|
|
|
|
|
|
* @ref http://3v4l.org/XX9r5 (64-bit)
|
|
|
|
|
|
*/
|
|
|
|
|
|
$bytes = PHP_INT_SIZE;
|
|
|
|
|
|
$mask = ~0;
|
|
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* $bits is effectively ceil(log($range, 2)) without dealing with
|
|
|
|
|
|
* type juggling
|
|
|
|
|
|
*/
|
|
|
|
|
|
while ($range > 0) {
|
|
|
|
|
|
if ($bits % 8 === 0) {
|
|
|
|
|
|
++$bytes;
|
|
|
|
|
|
}
|
|
|
|
|
|
++$bits;
|
|
|
|
|
|
$range >>= 1;
|
|
|
|
|
|
$mask = $mask << 1 | 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
$valueShift = $min;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
$val = 0;
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Now that we have our parameters set up, let's begin generating
|
|
|
|
|
|
* random integers until one falls between $min and $max
|
|
|
|
|
|
*/
|
|
|
|
|
|
do {
|
|
|
|
|
|
/**
|
|
|
|
|
|
* The rejection probability is at most 0.5, so this corresponds
|
|
|
|
|
|
* to a failure probability of 2^-128 for a working RNG
|
|
|
|
|
|
*/
|
|
|
|
|
|
if ($attempts > 128) {
|
|
|
|
|
|
throw new Exception(
|
|
|
|
|
|
'random_int: RNG is broken - too many rejections'
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Let's grab the necessary number of random bytes
|
|
|
|
|
|
*/
|
|
|
|
|
|
$randomByteString = random_bytes($bytes);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Let's turn $randomByteString into an integer
|
|
|
|
|
|
*
|
|
|
|
|
|
* This uses bitwise operators (<< and |) to build an integer
|
|
|
|
|
|
* out of the values extracted from ord()
|
|
|
|
|
|
*
|
|
|
|
|
|
* Example: [9F] | [6D] | [32] | [0C] =>
|
|
|
|
|
|
* 159 + 27904 + 3276800 + 201326592 =>
|
|
|
|
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* 204631455
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*/
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|
|
|
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|
$val &= 0;
|
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|
|
|
for ($i = 0; $i < $bytes; ++$i) {
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$val |= ord($randomByteString[$i]) << ($i * 8);
|
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}
|
|
|
|
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|
|
/**
|
|
|
|
|
|
* Apply mask
|
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|
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|
*/
|
|
|
|
|
|
$val &= $mask;
|
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|
|
|
|
$val += $valueShift;
|
|
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|
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|
|
|
|
++$attempts;
|
|
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|
|
/**
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|
|
|
|
* If $val overflows to a floating point number,
|
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* ... or is larger than $max,
|
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|
* ... or smaller than $min,
|
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* then try again.
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|
*/
|
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|
|
|
|
} while (!is_int($val) || $val > $max || $val < $min);
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|
return (int) $val;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
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|
