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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\Module\webauthn\WebAuthn; |
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use SimpleSAML\Logger; |
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use SimpleSAML\Utils\Config as SSPConfig; |
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/** |
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* Class AAGUID |
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* |
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* @package SimpleSAML\Module\webauthn\WebAuthn |
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*/ |
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class AAGUID |
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{ |
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/** |
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* The name of the configuration file where we should expect the AAGUID dictionary. |
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*/ |
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public const AAGUID_CONFIG_FILE = 'webauthn-aaguid.json'; |
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/** |
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* The actual dictionary containing all known tokens. |
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* |
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* @var array |
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*/ |
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protected array $dictionary = []; |
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/** |
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* The singleton instance. |
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* |
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* @var \SimpleSAML\Module\webauthn\WebAuthn\AAGUID |
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*/ |
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protected static AAGUID $instance; |
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/** |
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* AAGUID constructor. |
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*/ |
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protected function __construct() |
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{ |
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$config = new SSPConfig(); |
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$path = $config->getConfigDir() . '/' . self::AAGUID_CONFIG_FILE; |
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if (!file_exists($path)) { |
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Logger::warning("Missing AAGUID configuration file ($path). No device will be recognized."); |
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return; |
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} |
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$data = file_get_contents($path); |
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$json = json_decode($data, true); |
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if (!is_array($json)) { |
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// there was probably an error decoding the config, log the error and pray for the best |
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Logger::warning('Broken configuration file "' . $path . '": could not JSON-decode it.'); |
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} else { |
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$this->dictionary = $json; |
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} |
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} |
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/** |
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* Get the singleton instance of the AAGUID dictionary. |
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* |
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* @return self |
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*/ |
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public static function getInstance(): self |
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{ |
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if (!isset(self::$instance)) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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/** |
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* Determine if an AAGUID is known |
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* |
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* @param string $aaguid The AAGUID that we want to check. |
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* |
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* @return bool True if we know about this token, false otherwise. |
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*/ |
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public function hasToken(string $aaguid): bool |
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{ |
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$lowerAaguid = strtolower($aaguid); |
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if (array_key_exists($lowerAaguid, $this->dictionary)) { |
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return true; |
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} else { |
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Logger::info("AAGUID $lowerAaguid not found in dictionary, device is unknown."); |
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return false; |
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} |
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} |
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/** |
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* Get the information for a given AAGUID. |
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* |
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* @param string $aaguid The AAGUID we want to get. |
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* |
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* @return array An array containing information about the given AAGUID, or an empty array if that AAGUID is |
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* unknown. |
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*/ |
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public function get(string $aaguid): array |
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{ |
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if (!$this->hasToken($aaguid)) { |
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return []; |
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} |
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return $this->dictionary[$aaguid]; |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-webauthn
