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<?php |
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/** |
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* UniLogin Utility class. |
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* |
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*/ |
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class UniLoginUtil { |
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/** |
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* The timestamp format. |
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* |
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* @var string |
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*/ |
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const TIMESTAMP_FORMAT = 'YmdHis'; |
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/** |
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* The fingerprint timeout. |
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* |
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* Determines how long app -> provider -> app (plugin) may take. |
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* |
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* @var string |
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*/ |
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const FINGERPRINT_TIMEOUT = '-1 minute'; |
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/** |
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* Switch the time zone. |
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* |
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* @param string $timeZone The new time zone identifier |
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* @return string The old time zone identifier |
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* @todo Time zone should be application wide set to UTC |
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*/ |
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protected static function _switchTimeZone($timeZone = 'UTC') { |
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$restore = date_default_timezone_get(); |
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date_default_timezone_set($timeZone); |
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return $restore; |
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} |
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/** |
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* Calculate Uni Login fingerprint. |
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* |
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* @param string $formattedTimestamp Uni-Login formatted timestamp |
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* @param string $user A username |
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* @return string A fingerprint |
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* @see https://en.wikipedia.org/wiki/Length_extension_attack |
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*/ |
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public static function calculateFingerprint($formattedTimestamp, $user) { |
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$secret = Configure::read('UniLogin.provider.secret'); |
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return md5($formattedTimestamp . $secret . $user); |
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} |
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/** |
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* Validates Uni Login fingerprint. |
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* |
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* @param string $formattedTimestamp Uni-Login formatted timestamp |
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* @param string $user A username |
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* @param string $fingerprint Fingerprint to validate |
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* @return bool Whether or not the fingerprint validates |
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*/ |
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public static function validateFingerprint($formattedTimestamp, $user, $fingerprint) { |
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$restore = self::_switchTimeZone(); |
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$isValid = false; |
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$now = time(); |
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$timestamp = self::parseFormattedTimestamp($formattedTimestamp); |
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// Given timestamp should be between 1 minute ago and now |
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if (($timestamp <= $now) && ($timestamp > strtotime(self::FINGERPRINT_TIMEOUT, $now))) { |
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// Check fingerprint |
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if (hash_equals(self::calculateFingerprint($formattedTimestamp, $user), $fingerprint)) { |
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$isValid = true; |
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} |
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} |
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self::_switchTimeZone($restore); |
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return $isValid; |
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} |
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/** |
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* Formats given (or current) timestamp to Uni-Login formatted timestamp. |
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* |
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* @param string $timestamp Unix timestamp |
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* @return string Uni-Login formatted timestamp |
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*/ |
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public static function getFormattedTimestamp($timestamp = null) { |
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$restore = self::_switchTimeZone(); |
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if ($timestamp === null) { |
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$timestamp = time(); |
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} |
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$result = date(self::TIMESTAMP_FORMAT, $timestamp); |
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self::_switchTimeZone($restore); |
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return $result; |
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} |
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/** |
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* Parses given Uni-Login timestamp. |
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* |
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* @param string $formattedTimestamp Uni-login formatted timestamp |
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* @return mixed Returns a timestamp on success, false otherwise |
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*/ |
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public static function parseFormattedTimestamp($formattedTimestamp) { |
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$restore = self::_switchTimeZone(); |
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$result = strtotime($formattedTimestamp); |
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self::_switchTimeZone($restore); |
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return $result; |
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} |
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/** |
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* Returns url of the authentication provider. |
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* |
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* @return string Url of the authentication provider |
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*/ |
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public static function getProviderUrl() { |
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$url = Configure::read('UniLogin.provider.url'); |
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$applicationId = Configure::read('UniLogin.provider.applicationId'); |
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return sprintf($url, $applicationId); |
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} |
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/** |
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* Calculates fingerprint for given url. |
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* |
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* @param string $url Url to create fingerprint for |
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* @return string A fingerprint |
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*/ |
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public static function calculateUrlFingerprint($url) { |
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$secret = Configure::read('UniLogin.provider.secret'); |
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return md5($url . $secret); |
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} |
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/** |
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* Decodes given url. |
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* |
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* @param string $url Encoded url |
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* @return string Decoded url |
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*/ |
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public static function decodeUrl($url) { |
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return base64_decode(urldecode($url)); |
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} |
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/** |
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* Encodes given url. |
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* |
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* @param string $url Decoded url |
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* @return string Encoded url |
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*/ |
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public static function encodeUrl($url) { |
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return base64_encode($url); |
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} |
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/** |
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* Validates Uni-Login fingerprint for given url. |
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* |
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* @param string $url Given url |
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* @param string $fingerprint Fingerprint to validate |
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* @return bool Whether or not the fingerprint validates |
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*/ |
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public static function validateUrlFingerprint($url, $fingerprint) { |
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return hash_equals(self::calculateUrlFingerprint($url), $fingerprint); |
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} |
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/** |
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* Calculates HMAC (sha256) for data. |
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* |
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* @param array $data (Response) data |
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* @return string HMAC |
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*/ |
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public static function hmac(array $data = []) { |
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$secret = Configure::read('UniLogin.application.secret'); |
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return hash_hmac('sha256', implode('-', $data), $secret); |
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} |
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} |
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Oefenweb /
cakephp-uni-login
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The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g.
excluded_paths: ["lib/*"], you can move it to the dependency path list as follows:For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths