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<?php
function __password_hash($password, $algo, array $options = array()) {
global $error;
if (!function_exists('crypt')) {
$error[] = "Crypt must be loaded for password_hash to function";
return null;
}
if (!is_string($password)) {
$error[] = "password_hash(): Password must be a string";
return null;
}
if (!is_int($algo)) {
$error[] = "password_hash() expects parameter 2 to be long, " . gettype($algo) . " given";
return null;
}
switch ($algo) {
case 1:
// Note that this is a C constant, but not exposed to PHP, so we don't define it here.
$cost = 10;
if (isset($options['cost'])) {
$cost = $options['cost'];
if ($cost < 4 || $cost > 31) {
$error[] = "password_hash(): Invalid bcrypt cost parameter specified: ".$cost;
return null;
}
}
$required_salt_len = 22;
$hash_format = sprintf("$2y$%02d$", $cost);
break;
default:
$error[] = "password_hash(): Unknown password hashing algorithm: ".$algo;
return null;
}
if (isset($options['salt'])) {
switch (gettype($options['salt'])) {
case 'NULL':
case 'boolean':
case 'integer':
case 'double':
case 'string':
$salt = (string) $options['salt'];
break;
case 'object':
if (method_exists($options['salt'], '__tostring')) {
$salt = (string) $options['salt'];
break;
}
case 'array':
case 'resource':
default:
$error[] = 'password_hash(): Non-string salt parameter supplied';
return null;
}
if (strlen($salt) < $required_salt_len) {
$error[] = "password_hash(): Provided salt is too short: ".strlen($salt)." expecting ".$required_salt_len;
return null;
} elseif (0 == preg_match('#^[a-zA-Z0-9./]+$#D', $salt)) {
$salt = str_replace('+', '.', base64_encode($salt));
}
} else {
$buffer = '';
$raw_length = (int) ($required_salt_len * 3 / 4 + 1);
$buffer_valid = false;
if (function_exists('mcrypt_create_iv')) {
$buffer = mcrypt_create_iv($raw_length, MCRYPT_DEV_URANDOM);
if ($buffer) {
$buffer_valid = true;
}
}
if (!$buffer_valid && function_exists('openssl_random_pseudo_bytes')) {
$buffer = openssl_random_pseudo_bytes($raw_length);
if ($buffer) {
$buffer_valid = true;
}
}
if (!$buffer_valid && file_exists('/dev/urandom')) {
$f = @fopen('/dev/urandom', 'r');
if ($f) {
$read = strlen($buffer);
while ($read < $raw_length) {
$buffer .= fread($f, $raw_length - $read);
$read = strlen($buffer);
}
fclose($f);
if ($read >= $raw_length) {
$buffer_valid = true;
}
}
}
if (!$buffer_valid || strlen($buffer) < $raw_length) {
$bl = strlen($buffer);
for ($i = 0; $i < $raw_length; $i++) {
if ($i < $bl) {
$buffer[$i] = $buffer[$i] ^ chr(mt_rand(0, 255));
} else {
$buffer .= chr(mt_rand(0, 255));
}
}
}
$salt = str_replace('+', '.', base64_encode($buffer));
}
$salt = substr($salt, 0, $required_salt_len);
$hash = $hash_format . $salt;
$ret = crypt($password, $hash);
if (!is_string($ret) || strlen($ret) <= 13) {
return false;
}
return $ret;
}
$resp = __password_hash('[[admin_pass]]', 1, array());
echo '<update_pass>'.$resp.'</update_pass>';
// We do not need this file any more
unlink('update_pass.php');
?>