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2024-08-05 22:57:28 +08:00
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+<?php
+
+/*
+ * This file is part of the Acme PHP project.
+ *
+ * (c) Titouan Galopin <galopintitouan@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace AcmePhp\Ssl\Parser;
+
+use AcmePhp\Ssl\Certificate;
+use AcmePhp\Ssl\Exception\CertificateParsingException;
+use AcmePhp\Ssl\ParsedCertificate;
+
+/**
+ * Parse certificate to extract metadata.
+ *
+ * @author Jérémy Derussé <jeremy@derusse.com>
+ */
+class CertificateParser
+{
+    public function parse(Certificate $certificate): ParsedCertificate
+    {
+        $rawData = openssl_x509_parse($certificate->getPEM());
+
+        if (!\is_array($rawData)) {
+            throw new CertificateParsingException(sprintf('Fail to parse certificate with error: %s', openssl_error_string()));
+        }
+
+        if (!isset($rawData['subject']['CN'])) {
+            throw new CertificateParsingException('Missing expected key "subject.cn" in certificate');
+        }
+        if (!isset($rawData['serialNumber'])) {
+            throw new CertificateParsingException('Missing expected key "serialNumber" in certificate');
+        }
+        if (!isset($rawData['validFrom_time_t'])) {
+            throw new CertificateParsingException('Missing expected key "validFrom_time_t" in certificate');
+        }
+        if (!isset($rawData['validTo_time_t'])) {
+            throw new CertificateParsingException('Missing expected key "validTo_time_t" in certificate');
+        }
+
+        $subjectAlternativeName = [];
+
+        if (isset($rawData['extensions']['subjectAltName'])) {
+            $subjectAlternativeName = array_map(
+                function ($item) {
+                    return explode(':', trim($item), 2)[1];
+                },
+                array_filter(
+                    explode(
+                        ',',
+                        $rawData['extensions']['subjectAltName']
+                    ),
+                    function ($item) {
+                        return false !== strpos($item, ':');
+                    }
+                )
+            );
+        }
+
+        return new ParsedCertificate(
+            $certificate,
+            $rawData['subject']['CN'],
+            isset($rawData['issuer']['CN']) ? $rawData['issuer']['CN'] : null,
+            $rawData['subject'] === $rawData['issuer'],
+            new \DateTime('@'.$rawData['validFrom_time_t']),
+            new \DateTime('@'.$rawData['validTo_time_t']),
+            $rawData['serialNumber'],
+            $subjectAlternativeName
+        );
+    }
+}