initial checkin

1 files changed, 319 insertions, 0 deletions

diff --git a/includes/password_compat.php b/includes/password_compat.php
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--- /dev/null
+++ b/includes/password_compat.php
@@ -0,0 +1,319 @@
+<?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
+ *
+ * Comment of Flyspray dev peterdd: This is lib/password.php from https://github.com/ircmaxell/password_compat master branch at 2016-06-27 
+ */
+
+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 = (int) $options['cost'];
+                        if ($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;
+            }
+            $salt_req_encoding = false;
+            if (isset($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_req_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')) {
+                    $strong = false;
+                    $buffer = openssl_random_pseudo_bytes($raw_salt_len, $strong);
+                    if ($buffer && $strong) {
+                        $buffer_valid = true;
+                    }
+                }
+                if (!$buffer_valid && @is_readable('/dev/urandom')) {
+                    $file = fopen('/dev/urandom', 'r');
+                    $read = 0;
+                    $local_buffer = '';
+                    while ($read < $raw_salt_len) {
+                        $local_buffer .= fread($file, $raw_salt_len - $read);
+                        $read = PasswordCompat\binary\_strlen($local_buffer);
+                    }
+                    fclose($file);
+                    if ($read >= $raw_salt_len) {
+                        $buffer_valid = true;
+                    }
+                    $buffer = str_pad($buffer, $raw_salt_len, "\0") ^ str_pad($local_buffer, $raw_salt_len, "\0");
+                }
+                if (!$buffer_valid || PasswordCompat\binary\_strlen($buffer) < $raw_salt_len) {
+                    $buffer_length = PasswordCompat\binary\_strlen($buffer);
+                    for ($i = 0; $i < $raw_salt_len; $i++) {
+                        if ($i < $buffer_length) {
+                            $buffer[$i] = $buffer[$i] ^ chr(mt_rand(0, 255));
+                        } else {
+                            $buffer .= chr(mt_rand(0, 255));
+                        }
+                    }
+                }
+                $salt = $buffer;
+                $salt_req_encoding = true;
+            }
+            if ($salt_req_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'] !== (int) $algo) {
+                return true;
+            }
+            switch ($algo) {
+                case PASSWORD_BCRYPT:
+                    $cost = isset($options['cost']) ? (int) $options['cost'] : PASSWORD_BCRYPT_DEFAULT_COST;
+                    if ($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;
+        }
+
+    }
+}