Create example for issue #43

Author: fgrosse

examples/Issue43.php

@@ -0,0 +1,77 @@
+<?php
+/*
+ * This file is part of the PHPASN1 library.
+ *
+ * Copyright © Friedrich Große <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use FG\ASN1\ExplicitlyTaggedObject;
+use FG\ASN1\Universal\Enumerated;
+use FG\ASN1\Universal\ObjectIdentifier;
+use FG\ASN1\Universal\Sequence;
+
+require_once __DIR__.'/../vendor/autoload.php';
+
+// $data has been generated using https://pkijs.org/examples/OCSP_resp_complex_example.html
+$data = "MIIEXgoBAKCCBFcwggRTBgkrBgEFBQcwAQEEggREMIIEQDBeoSAwHjEcMAkGA1UE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";
+
+// OCSP response status according to
+// https://tools.ietf.org/html/rfc6960#section-4.2.1
+$validResponseStatuses = [
+    0 => 'Response has valid confirmations',
+    1 => 'Illegal confirmation request',
+    2 => 'Internal error in issuer',
+    3 => 'Try again later',
+    // (4) is not used
+    5 => 'Must sign the request',
+    6 => 'Request unauthorized',
+];
+
+$ocspResponse = Sequence::fromBinary(base64_decode($data));
+
+/** @var Enumerated $responseStatus */
+$elements = $ocspResponse->getChildren();
+$responseStatus = $elements[0];
+$responseStatusCode = $responseStatus->getContent();
+
+echo PHP_EOL;
+echo "OCSP response status: $responseStatusCode ({$validResponseStatuses[$responseStatusCode]})" . PHP_EOL;
+
+/** @var ExplicitlyTaggedObject $responseBytes */
+$responseBytes = $elements[1];
+
+/** @var Sequence $responseBytesSequence */
+$responseBytesSequence = $responseBytes->getContent();
+
+/** @var ObjectIdentifier $responseType */
+$responseType = $responseBytesSequence->getChildren()[0];
+echo "ResponseType: {$responseType}" . PHP_EOL;
+
+$response = $responseBytesSequence->getChildren()[1];
+echo "Response (octet string): {$response}" . PHP_EOL;