+++ /dev/null
-<?php
-/**
- * A Compatibility library with PHP 5.5's simplified password hashing API.
- *
- * @author Anthony Ferrara <ircmaxell@php.net>
- * @license http://www.opensource.org/licenses/mit-license.html MIT License
- * @copyright 2012 The Authors
- */
-
-namespace {
-
- if (!defined('PASSWORD_BCRYPT')) {
- /**
- * PHPUnit Process isolation caches constants, but not function declarations.
- * So we need to check if the constants are defined separately from
- * the functions to enable supporting process isolation in userland
- * code.
- */
- define('PASSWORD_BCRYPT', 1);
- define('PASSWORD_DEFAULT', PASSWORD_BCRYPT);
- define('PASSWORD_BCRYPT_DEFAULT_COST', 10);
- }
-
- if (!function_exists('password_hash')) {
-
- /**
- * Hash the password using the specified algorithm
- *
- * @param string $password The password to hash
- * @param int $algo The algorithm to use (Defined by PASSWORD_* constants)
- * @param array $options The options for the algorithm to use
- *
- * @return string|false The hashed password, or false on error.
- */
- function password_hash($password, $algo, array $options = array()) {
- if (!function_exists('crypt')) {
- trigger_error("Crypt must be loaded for password_hash to function", E_USER_WARNING);
- return null;
- }
- if (is_null($password) || is_int($password)) {
- $password = (string) $password;
- }
- if (!is_string($password)) {
- trigger_error("password_hash(): Password must be a string", E_USER_WARNING);
- return null;
- }
- if (!is_int($algo)) {
- trigger_error("password_hash() expects parameter 2 to be long, " . gettype($algo) . " given", E_USER_WARNING);
- return null;
- }
- $resultLength = 0;
- switch ($algo) {
- case PASSWORD_BCRYPT:
- $cost = PASSWORD_BCRYPT_DEFAULT_COST;
- if (isset($options['cost'])) {
- $cost = $options['cost'];
- if ($cost < 4 || $cost > 31) {
- trigger_error(sprintf("password_hash(): Invalid bcrypt cost parameter specified: %d", $cost), E_USER_WARNING);
- return null;
- }
- }
- // The length of salt to generate
- $raw_salt_len = 16;
- // The length required in the final serialization
- $required_salt_len = 22;
- $hash_format = sprintf("$2y$%02d$", $cost);
- // The expected length of the final crypt() output
- $resultLength = 60;
- break;
- default:
- trigger_error(sprintf("password_hash(): Unknown password hashing algorithm: %s", $algo), E_USER_WARNING);
- return null;
- }
- $salt_requires_encoding = false;
- if (isset($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) $options['salt'];
- break;
- }
- case 'array':
- case 'resource':
- default:
- trigger_error('password_hash(): Non-string salt parameter supplied', E_USER_WARNING);
- return null;
- }
- if (PasswordCompat\binary\_strlen($salt) < $required_salt_len) {
- trigger_error(sprintf("password_hash(): Provided salt is too short: %d expecting %d", PasswordCompat\binary\_strlen($salt), $required_salt_len), E_USER_WARNING);
- return null;
- } elseif (0 == preg_match('#^[a-zA-Z0-9./]+$#D', $salt)) {
- $salt_requires_encoding = true;
- }
- } else {
- $buffer = '';
- $buffer_valid = false;
- if (function_exists('mcrypt_create_iv') && !defined('PHALANGER')) {
- $buffer = mcrypt_create_iv($raw_salt_len, MCRYPT_DEV_URANDOM);
- if ($buffer) {
- $buffer_valid = true;
- }
- }
- if (!$buffer_valid && function_exists('openssl_random_pseudo_bytes')) {
- $buffer = openssl_random_pseudo_bytes($raw_salt_len);
- if ($buffer) {
- $buffer_valid = true;
- }
- }
- if (!$buffer_valid && @is_readable('/dev/urandom')) {
- $f = fopen('/dev/urandom', 'r');
- $read = PasswordCompat\binary\_strlen($buffer);
- while ($read < $raw_salt_len) {
- $buffer .= fread($f, $raw_salt_len - $read);
- $read = PasswordCompat\binary\_strlen($buffer);
- }
- fclose($f);
- if ($read >= $raw_salt_len) {
- $buffer_valid = true;
- }
- }
- if (!$buffer_valid || PasswordCompat\binary\_strlen($buffer) < $raw_salt_len) {
- $bl = PasswordCompat\binary\_strlen($buffer);
- for ($i = 0; $i < $raw_salt_len; $i++) {
- if ($i < $bl) {
- $buffer[$i] = $buffer[$i] ^ chr(mt_rand(0, 255));
- } else {
- $buffer .= chr(mt_rand(0, 255));
- }
- }
- }
- $salt = $buffer;
- $salt_requires_encoding = true;
- }
- if ($salt_requires_encoding) {
- // encode string with the Base64 variant used by crypt
- $base64_digits =
- 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
- $bcrypt64_digits =
- './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
-
- $base64_string = base64_encode($salt);
- $salt = strtr(rtrim($base64_string, '='), $base64_digits, $bcrypt64_digits);
- }
- $salt = PasswordCompat\binary\_substr($salt, 0, $required_salt_len);
-
- $hash = $hash_format . $salt;
-
- $ret = crypt($password, $hash);
-
- if (!is_string($ret) || PasswordCompat\binary\_strlen($ret) != $resultLength) {
- return false;
- }
-
- return $ret;
- }
-
- /**
- * Get information about the password hash. Returns an array of the information
- * that was used to generate the password hash.
- *
- * array(
- * 'algo' => 1,
- * 'algoName' => 'bcrypt',
- * 'options' => array(
- * 'cost' => PASSWORD_BCRYPT_DEFAULT_COST,
- * ),
- * )
- *
- * @param string $hash The password hash to extract info from
- *
- * @return array The array of information about the hash.
- */
- function password_get_info($hash) {
- $return = array(
- 'algo' => 0,
- 'algoName' => 'unknown',
- 'options' => array(),
- );
- if (PasswordCompat\binary\_substr($hash, 0, 4) == '$2y$' && PasswordCompat\binary\_strlen($hash) == 60) {
- $return['algo'] = PASSWORD_BCRYPT;
- $return['algoName'] = 'bcrypt';
- list($cost) = sscanf($hash, "$2y$%d$");
- $return['options']['cost'] = $cost;
- }
- return $return;
- }
-
- /**
- * Determine if the password hash needs to be rehashed according to the options provided
- *
- * If the answer is true, after validating the password using password_verify, rehash it.
- *
- * @param string $hash The hash to test
- * @param int $algo The algorithm used for new password hashes
- * @param array $options The options array passed to password_hash
- *
- * @return boolean True if the password needs to be rehashed.
- */
- function password_needs_rehash($hash, $algo, array $options = array()) {
- $info = password_get_info($hash);
- if ($info['algo'] != $algo) {
- return true;
- }
- switch ($algo) {
- case PASSWORD_BCRYPT:
- $cost = isset($options['cost']) ? $options['cost'] : PASSWORD_BCRYPT_DEFAULT_COST;
- if ($cost != $info['options']['cost']) {
- return true;
- }
- break;
- }
- return false;
- }
-
- /**
- * Verify a password against a hash using a timing attack resistant approach
- *
- * @param string $password The password to verify
- * @param string $hash The hash to verify against
- *
- * @return boolean If the password matches the hash
- */
- function password_verify($password, $hash) {
- if (!function_exists('crypt')) {
- trigger_error("Crypt must be loaded for password_verify to function", E_USER_WARNING);
- return false;
- }
- $ret = crypt($password, $hash);
- if (!is_string($ret) || PasswordCompat\binary\_strlen($ret) != PasswordCompat\binary\_strlen($hash) || PasswordCompat\binary\_strlen($ret) <= 13) {
- return false;
- }
-
- $status = 0;
- for ($i = 0; $i < PasswordCompat\binary\_strlen($ret); $i++) {
- $status |= (ord($ret[$i]) ^ ord($hash[$i]));
- }
-
- return $status === 0;
- }
- }
-
-}
-
-namespace PasswordCompat\binary {
-
- if (!function_exists('PasswordCompat\\binary\\_strlen')) {
-
- /**
- * Count the number of bytes in a string
- *
- * We cannot simply use strlen() for this, because it might be overwritten by the mbstring extension.
- * In this case, strlen() will count the number of *characters* based on the internal encoding. A
- * sequence of bytes might be regarded as a single multibyte character.
- *
- * @param string $binary_string The input string
- *
- * @internal
- * @return int The number of bytes
- */
- function _strlen($binary_string) {
- if (function_exists('mb_strlen')) {
- return mb_strlen($binary_string, '8bit');
- }
- return strlen($binary_string);
- }
-
- /**
- * Get a substring based on byte limits
- *
- * @see _strlen()
- *
- * @param string $binary_string The input string
- * @param int $start
- * @param int $length
- *
- * @internal
- * @return string The substring
- */
- function _substr($binary_string, $start, $length) {
- if (function_exists('mb_substr')) {
- return mb_substr($binary_string, $start, $length, '8bit');
- }
- return substr($binary_string, $start, $length);
- }
-
- /**
- * Check if current PHP version is compatible with the library
- *
- * @return boolean the check result
- */
- function check() {
- static $pass = NULL;
-
- if (is_null($pass)) {
- if (function_exists('crypt')) {
- $hash = '$2y$04$usesomesillystringfore7hnbRJHxXVLeakoG8K30oukPsA.ztMG';
- $test = crypt("password", $hash);
- $pass = $test == $hash;
- } else {
- $pass = false;
- }
- }
- return $pass;
- }
-
- }
-}
\ No newline at end of file
projects / yaffs-website / blobdiff