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-rw-r--r--app/Library/password.php431
1 files changed, 215 insertions, 216 deletions
diff --git a/app/Library/password.php b/app/Library/password.php
index c6e84cbd..d4972ab4 100644
--- a/app/Library/password.php
+++ b/app/Library/password.php
@@ -8,220 +8,219 @@
*/
if (!defined('PASSWORD_BCRYPT')) {
-
- define('PASSWORD_BCRYPT', 1);
- define('PASSWORD_DEFAULT', PASSWORD_BCRYPT);
-
- if (version_compare(PHP_VERSION, '5.3.7', '<')) {
-
- define('PASSWORD_PREFIX', '$2a$');
- }
- else {
-
- define('PASSWORD_PREFIX', '$2y$');
- }
-
- /**
- * 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 $options = array()) {
- if (!function_exists('crypt')) {
- trigger_error("Crypt must be loaded for password_hash to function", E_USER_WARNING);
- return null;
- }
- if (!is_string($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;
- }
- switch ($algo) {
- case PASSWORD_BCRYPT:
- // 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) {
- trigger_error(sprintf("password_hash(): Invalid bcrypt cost parameter specified: %d", $cost), E_USER_WARNING);
- return null;
- }
- }
- $required_salt_len = 22;
- $hash_format = sprintf("%s%02d$", PASSWORD_PREFIX, $cost);
- break;
- default:
- trigger_error(sprintf("password_hash(): Unknown password hashing algorithm: %s", $algo), E_USER_WARNING);
- return null;
- }
- if (isset($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) $options['salt'];
- break;
- }
- case 'array':
- case 'resource':
- default:
- trigger_error('password_hash(): Non-string salt parameter supplied', E_USER_WARNING);
- return null;
- }
- if (strlen($salt) < $required_salt_len) {
- trigger_error(sprintf("password_hash(): Provided salt is too short: %d expecting %d", strlen($salt), $required_salt_len), E_USER_WARNING);
- return null;
- } elseif (0 == preg_match('#^[a-zA-Z0-9./]+$#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') && !defined('PHALANGER')) {
- $buffer = mcrypt_create_iv($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 && is_readable('/dev/urandom')) {
- $f = fopen('/dev/urandom', 'r');
- $read = strlen($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;
- }
-
- /**
- * 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' => 10,
- * ),
- * )
- *
- * @param string $hash The password hash to extract info from
- *
- * @return array The array of information about the hash.
- */
- function password_get_info($hash) {
- $return = array(
- 'algo' => 0,
- 'algoName' => 'unknown',
- 'options' => array(),
- );
- if (substr($hash, 0, 4) == PASSWORD_PREFIX && strlen($hash) == 60) {
- $return['algo'] = PASSWORD_BCRYPT;
- $return['algoName'] = 'bcrypt';
- list($cost) = sscanf($hash, PASSWORD_PREFIX."%d$");
- $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']) ? $options['cost'] : 10;
- if ($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) || strlen($ret) != strlen($hash) || strlen($ret) <= 13) {
- return false;
- }
-
- $status = 0;
- for ($i = 0; $i < strlen($ret); $i++) {
- $status |= (ord($ret[$i]) ^ ord($hash[$i]));
- }
-
- return $status === 0;
- }
+ define('PASSWORD_BCRYPT', 1);
+ define('PASSWORD_DEFAULT', PASSWORD_BCRYPT);
+
+ if (version_compare(PHP_VERSION, '5.3.7', '<')) {
+ define('PASSWORD_PREFIX', '$2a$');
+ } else {
+ define('PASSWORD_PREFIX', '$2y$');
+ }
+
+ /**
+ * 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 $options = array())
+ {
+ if (!function_exists('crypt')) {
+ trigger_error("Crypt must be loaded for password_hash to function", E_USER_WARNING);
+ return null;
+ }
+ if (!is_string($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;
+ }
+ switch ($algo) {
+ case PASSWORD_BCRYPT:
+ // 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) {
+ trigger_error(sprintf("password_hash(): Invalid bcrypt cost parameter specified: %d", $cost), E_USER_WARNING);
+ return null;
+ }
+ }
+ $required_salt_len = 22;
+ $hash_format = sprintf("%s%02d$", PASSWORD_PREFIX, $cost);
+ break;
+ default:
+ trigger_error(sprintf("password_hash(): Unknown password hashing algorithm: %s", $algo), E_USER_WARNING);
+ return null;
+ }
+ if (isset($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) $options['salt'];
+ break;
+ }
+ case 'array':
+ case 'resource':
+ default:
+ trigger_error('password_hash(): Non-string salt parameter supplied', E_USER_WARNING);
+ return null;
+ }
+ if (strlen($salt) < $required_salt_len) {
+ trigger_error(sprintf("password_hash(): Provided salt is too short: %d expecting %d", strlen($salt), $required_salt_len), E_USER_WARNING);
+ return null;
+ } elseif (0 == preg_match('#^[a-zA-Z0-9./]+$#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') && !defined('PHALANGER')) {
+ $buffer = mcrypt_create_iv($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 && is_readable('/dev/urandom')) {
+ $f = fopen('/dev/urandom', 'r');
+ $read = strlen($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;
+ }
+
+ /**
+ * 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' => 10,
+ * ),
+ * )
+ *
+ * @param string $hash The password hash to extract info from
+ *
+ * @return array The array of information about the hash.
+ */
+ function password_get_info($hash)
+ {
+ $return = array(
+ 'algo' => 0,
+ 'algoName' => 'unknown',
+ 'options' => array(),
+ );
+ if (substr($hash, 0, 4) == PASSWORD_PREFIX && strlen($hash) == 60) {
+ $return['algo'] = PASSWORD_BCRYPT;
+ $return['algoName'] = 'bcrypt';
+ list($cost) = sscanf($hash, PASSWORD_PREFIX."%d$");
+ $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']) ? $options['cost'] : 10;
+ if ($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) || strlen($ret) != strlen($hash) || strlen($ret) <= 13) {
+ return false;
+ }
+
+ $status = 0;
+ for ($i = 0; $i < strlen($ret); $i++) {
+ $status |= (ord($ret[$i]) ^ ord($hash[$i]));
+ }
+
+ return $status === 0;
+ }
}
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