<?php

namespace AcmePhp\Ssl\Parser;

use AcmePhp\Ssl\Exception\KeyFormatException;
use AcmePhp\Ssl\Exception\KeyParsingException;
use AcmePhp\Ssl\Key;
use AcmePhp\Ssl\ParsedKey;

/**
 * Parse keys to extract metadata.
 *
 * @author Titouan Galopin
 */
class KeyParser
{
    public function parse(Key $key): ParsedKey
    {
        try {
            $resource = $key->getResource();
        } catch (KeyFormatException $e) {
            throw new KeyParsingException('Fail to load resource for key', 0, $e);
        }

        $rawData = openssl_pkey_get_details($resource);

        // PHP 8 automatically frees the key instance and deprecates the function
        if (\PHP_VERSION_ID < 80000) {
            openssl_free_key($resource);
        }

        if (!\is_array($rawData)) {
            throw new KeyParsingException(sprintf('Fail to parse key with error: %s', openssl_error_string()));
        }

        foreach (['type', 'key', 'bits'] as $requiredKey) {
            if (!isset($rawData[$requiredKey])) {
                throw new KeyParsingException(sprintf('Missing expected key "%s" in OpenSSL key', $requiredKey));
            }
        }

        $details = [];

        if (OPENSSL_KEYTYPE_RSA === $rawData['type']) {
            $details = $rawData['rsa'];
        } elseif (OPENSSL_KEYTYPE_DSA === $rawData['type']) {
            $details = $rawData['dsa'];
        } elseif (OPENSSL_KEYTYPE_DH === $rawData['type']) {
            $details = $rawData['dh'];
        } elseif (OPENSSL_KEYTYPE_EC === $rawData['type']) {
            $details = $rawData['ec'];
        }

        return new ParsedKey($key, $rawData['key'], $rawData['bits'], $rawData['type'], $details);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzgwNzMyNzA4MzE4MDc5NyA4Mzg5OTc0NTIwMDY4MjczIDkyNTM4NjExNzA4NjMxMTE=