<?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:----MTQ1MTg2MzcyMzM4MTE4MyAzNjA4OTA3MDI1NzY2Njk1IDYzMjI5NjUyOTEwODQyMjU=