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<?php |
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if (!defined('ABSPATH')) exit; |
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if (!class_exists('WPRRecover')) : |
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class WPRRecover { |
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|
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const SECRET_TTL = 1800; |
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const TAG_LENGTH = 32; |
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const SALT_LENGTH = 64; |
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const MIN_SALT_LENGTH = 32; |
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const SALT_CONSTANT = 'AUTH_SALT'; |
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const SALT_PLACEHOLDER = 'put your unique phrase here'; |
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|
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public static $default_secret_key = 'bv_default_secret_key'; |
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private static $other_salt_constants = array( |
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'AUTH_KEY', 'SECURE_AUTH_KEY', 'SECURE_AUTH_SALT', |
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'LOGGED_IN_KEY', 'LOGGED_IN_SALT', |
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'NONCE_KEY', 'NONCE_SALT' |
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); |
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|
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public static function saltMaterial($settings) { |
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$salt = self::configSalt(); |
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if (!empty($salt)) { |
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return $salt; |
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} |
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|
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return self::storedSalt($settings); |
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} |
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|
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private static function configSalt() { |
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if (!defined(self::SALT_CONSTANT)) { |
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return null; |
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} |
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|
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$value = constant(self::SALT_CONSTANT); |
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if (!is_string($value) || strlen($value) < self::MIN_SALT_LENGTH || |
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self::isPlaceholder($value) || self::isSharedWithOtherSalts($value)) { |
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return null; |
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} |
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|
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return $value; |
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} |
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|
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private static function isSharedWithOtherSalts($value) { |
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foreach (self::$other_salt_constants as $constant) { |
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if (defined($constant) && constant($constant) === $value) { |
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return true; |
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} |
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} |
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|
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return false; |
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} |
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|
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private static function storedSalt($settings) { |
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$key_details = $settings->getOption(self::$default_secret_key); |
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if (!is_array($key_details) || !isset($key_details["salt"])) { |
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return null; |
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} |
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|
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$salt = $key_details["salt"]; |
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if (!is_string($salt) || strlen($salt) < self::MIN_SALT_LENGTH) { |
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return null; |
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} |
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|
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return $salt; |
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} |
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|
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private static function isPlaceholder($value) { |
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if ($value === self::SALT_PLACEHOLDER) { |
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return true; |
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} |
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|
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#wp-config-sample.php is localized for some locales, so the placeholder |
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#is not always the English string. wp_salt() guards against the |
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#translated form the same way. |
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// phpcs:ignore WordPress.WP.I18n.MissingArgDomain |
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return function_exists('__') && $value === __('put your unique phrase here'); |
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} |
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|
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public static function defaultSecret($settings) { |
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$secret = self::getDefaultSecret($settings); |
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if (empty($secret)) { |
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$secret = WPRRecover::refreshDefaultSecret($settings); |
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} |
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return $secret; |
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} |
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|
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public static function refreshDefaultSecret($settings) { |
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$settings->deleteOption(self::$default_secret_key); |
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|
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$key_details = array(); |
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$key_details["key"] = WPRAccount::randString(32); |
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$key_details["expires_at"] = time() + self::SECRET_TTL; |
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|
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#Only carried when wp-config.php has nothing usable to bind the tag to. |
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if (empty(self::configSalt())) { |
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$key_details["salt"] = WPRAccount::randString(self::SALT_LENGTH); |
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} |
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|
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$settings->updateOption(self::$default_secret_key, $key_details); |
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|
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return $key_details["key"]; |
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} |
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|
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public static function connectionTag($settings) { |
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$secret = self::getDefaultSecret($settings); |
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if (empty($secret)) { |
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return null; |
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} |
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|
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$material = self::saltMaterial($settings); |
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if (empty($material)) { |
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return null; |
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} |
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|
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return substr(hash_hmac('sha256', $secret, $material), 0, self::TAG_LENGTH); |
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} |
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|
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public static function verifyTag($settings, $tag) { |
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$expected = self::connectionTag($settings); |
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if (empty($expected)) { |
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return false; |
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} |
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|
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return is_string($tag) && hash_equals($expected, $tag); |
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} |
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|
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public static function deleteDefaultSecret($settings) { |
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return $settings->deleteOption(self::$default_secret_key); |
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} |
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|
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public static function getDefaultSecret($settings) { |
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$key_details = $settings->getOption(self::$default_secret_key); |
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|
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if (is_array($key_details) && $key_details["expires_at"] > time()) { |
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return $key_details["key"]; |
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} |
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|
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return null; |
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} |
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|
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public static function getSecretStatus($settings) { |
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$key_details = $settings->getOption(self::$default_secret_key); |
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$status = 'ACTIVE'; |
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if (!is_array($key_details)) { |
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$status = 'DELETED'; |
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} elseif ($key_details["expires_at"] <= time()) { |
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$status = 'EXPIRED'; |
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} |
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|
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return $status; |
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} |
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|
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public static function validate($key) { |
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return is_string($key) && strlen($key) >= 32; |
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} |
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|
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public static function find($settings, $pubkey, $tag = null) { |
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if (!self::validate($pubkey)) { |
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return null; |
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} |
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|
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if (!self::verifyTag($settings, $tag)) { |
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return null; |
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} |
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|
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$secret = self::getDefaultSecret($settings); |
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if (!self::validate($secret)) { |
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return null; |
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} |
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|
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$account = new WPRAccount($settings, $pubkey, $secret); |
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return $account; |
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} |
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} |
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endif; |
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|
