Bug #22369 » 13989_4-1_v4.diff
| t3lib/class.t3lib_div.php (working copy) | ||
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if (TYPO3_OS != 'WIN' && ($fh = @fopen('/dev/urandom', 'rb'))) {
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$output = fread($fh, $count);
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fclose($fh);
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} elseif (TYPO3_OS == 'WIN') {
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if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
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if (function_exists('mcrypt_create_iv')) {
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$output = mcrypt_create_iv($count, MCRYPT_DEV_URANDOM);
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} elseif (function_exists('openssl_random_pseudo_bytes')) {
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$isStrong = null;
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$output = openssl_random_pseudo_bytes($count, $isStrong);
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// skip ssl since it wasn't using the strong algo
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if ($isStrong !== TRUE) {
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$output = '';
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}
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}
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}
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}
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// fallback if /dev/urandom is not available
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// fallback if other random byte generation failed until now
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if (!isset($output{$count - 1})) {
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// We initialize with the somewhat random.
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$randomState = $GLOBALS['TYPO3_CONF_VARS']['SYS']['encryptionKey']
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. microtime() . getmypid();
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$randomState = $GLOBALS['TYPO3_CONF_VARS']['SYS']['encryptionKey'];
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if (version_compare(PHP_VERSION, '4.3.2', '>=') && function_exists('memory_get_usage')) {
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$randomState .= base_convert(memory_get_usage() % pow(10, 6), 10, 2);
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}
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$randomState .= microtime() . getmypid();
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while (!isset($output{$count - 1})) {
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$randomState = md5(microtime() . mt_rand() . $randomState);
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// Fix: Work around PHP4 allowing only one parameter to md5()
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// $output .= md5(mt_rand() . $randomState, true);
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$output .= pack('H*', md5(mt_rand() . $randomState));
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$randomState = sha1(microtime() . mt_rand() . $randomState);
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// Fix: Work around PHP4 allowing only one parameter to sha1()
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// $output .= sha1(mt_rand() . $randomState, true);
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$output .= pack('H*', sha1(mt_rand() . $randomState));
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}
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$output = substr($output, strlen($output) - $count, $count);
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}
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return $output;
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}
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/**
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* Returns a hex representation of a random byte string.
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*
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* @param integer Number of hex characters to return
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* @return string Random Bytes
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*/
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function getRandomHexString($count)
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{
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return substr(bin2hex(t3lib_div::generateRandomBytes(intval(($count + 1) / 2))), 0, $count);
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}
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