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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\Module\authX509\Auth\Process; |
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use SimpleSAML\Assert\Assert; |
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use SimpleSAML\Auth; |
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use SimpleSAML\Logger; |
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use SimpleSAML\Module; |
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use SimpleSAML\Utils; |
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/** |
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* Filter which shows a warning if the user's client certificate is about to expire. |
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* |
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** <code> |
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* // show about2xpire warning if client certificate is about to expire |
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* 10 => array( |
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* 'class' => 'authX509:ExpiryWarning', |
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* 'warndaysbefore' => 30, |
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* ), |
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* </code> |
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* |
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* @package SimpleSAMLphp |
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*/ |
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class ExpiryWarning extends Auth\ProcessingFilter |
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{ |
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/** @var int */ |
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private int $warndaysbefore = 30; |
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/** @var string|null */ |
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private ?string $renewurl = null; |
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/** |
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* Initialize this filter. |
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* |
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* @param array $config Configuration information about this filter. |
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* @param mixed $reserved For future use. |
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*/ |
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public function __construct(array $config, $reserved) |
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{ |
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parent::__construct($config, $reserved); |
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if (array_key_exists('warndaysbefore', $config)) { |
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Assert::integerish( |
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$config['warndaysbefore'], |
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'Invalid value for \'warndaysbefore\'-option to authX509::ExpiryWarning filter.', |
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); |
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$this->warndaysbefore = (int)$config['warndaysbefore']; |
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} |
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if (array_key_exists('renewurl', $config)) { |
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$this->renewurl = $config['renewurl']; |
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Assert::string( |
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$this->renewurl, |
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'Invalid value for \'renewurl\'-option to authX509::ExpiryWarning filter.', |
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); |
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} |
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} |
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/** |
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* Process an authentication response. |
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* |
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* This function saves the state, and if necessary redirects the user to the page where the user |
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* is informed about the expiry date of his/her certificate. |
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* |
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* @param array $state The state of the response. |
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*/ |
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public function process(array &$state): void |
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{ |
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if (isset($state['isPassive']) && $state['isPassive'] === true) { |
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// We have a passive request. Skip the warning |
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return; |
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} |
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if ( |
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!isset($_SERVER['SSL_CLIENT_CERT']) || |
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($_SERVER['SSL_CLIENT_CERT'] == '') |
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) { |
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return; |
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} |
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$client_cert = $_SERVER['SSL_CLIENT_CERT']; |
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$client_cert_data = openssl_x509_parse($client_cert); |
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if ($client_cert_data == false) { |
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Logger::error('authX509: invalid cert'); |
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return; |
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} |
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$validTo = $client_cert_data['validTo_time_t']; |
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$now = time(); |
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$daysleft = (int) (($validTo - $now) / 86400); //24*60*60 |
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if ($daysleft > $this->warndaysbefore) { |
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// We have a certificate that will be valid for some time. Skip the warning |
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return; |
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} |
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Logger::warning('authX509: user certificate expires in ' . $daysleft . ' days'); |
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$state['daysleft'] = $daysleft; |
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$state['renewurl'] = $this->renewurl; |
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// Save state and redirect |
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$id = Auth\State::saveState($state, 'warning:expire'); |
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$url = Module::getModuleURL('authX509/expirywarning.php'); |
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$httpUtils = new Utils\HTTP(); |
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$httpUtils->redirectTrustedURL($url, ['StateId' => $id]); |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-authX509
