<?php

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
        );
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NjU3NzEwMzUxMTQwOTM4OCA3NDcwOTgxMjUwNDQ0OTI0IDY1NzgzNjYyNDEzNTE5MTI=