1#@!#!123s

: / opt / psa / admin / plib / modules / grafana / vendor / lcobucci / jwt / src / Signer /
Filename : OpenSSL.php
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<?php

declare (strict_types=1);
namespace PleskGrafana\Lcobucci\JWT\Signer;

use PleskGrafana\Lcobucci\JWT\Signer;
use OpenSSLAsymmetricKey;
use SensitiveParameter;
use function array_key_exists;
use function assert;
use function is_array;
use function is_bool;
use function is_int;
use function openssl_error_string;
use function openssl_pkey_get_details;
use function openssl_pkey_get_private;
use function openssl_pkey_get_public;
use function openssl_sign;
use function openssl_verify;
use const OPENSSL_KEYTYPE_DH;
use const OPENSSL_KEYTYPE_DSA;
use const OPENSSL_KEYTYPE_EC;
use const OPENSSL_KEYTYPE_RSA;
use const PHP_EOL;
abstract class OpenSSL implements Signer
{
    protected const KEY_TYPE_MAP = [OPENSSL_KEYTYPE_RSA => 'RSA', OPENSSL_KEYTYPE_DSA => 'DSA', OPENSSL_KEYTYPE_DH => 'DH', OPENSSL_KEYTYPE_EC => 'EC'];
    /**
     * @return non-empty-string
     *
     * @throws CannotSignPayload
     * @throws InvalidKeyProvided
     */
    protected final function createSignature(#[\SensitiveParameter] string $pem, #[\SensitiveParameter] string $passphrase, string $payload) : string
    {
        $key = $this->getPrivateKey($pem, $passphrase);
        $signature = '';
        if (!openssl_sign($payload, $signature, $key, $this->algorithm())) {
            throw CannotSignPayload::errorHappened($this->fullOpenSSLErrorString());
        }
        return $signature;
    }
    /** @throws CannotSignPayload */
    private function getPrivateKey(#[\SensitiveParameter] string $pem, #[\SensitiveParameter] string $passphrase) : OpenSSLAsymmetricKey
    {
        return $this->validateKey(openssl_pkey_get_private($pem, $passphrase));
    }
    /** @throws InvalidKeyProvided */
    protected final function verifySignature(string $expected, string $payload, string $pem) : bool
    {
        $key = $this->getPublicKey($pem);
        $result = openssl_verify($payload, $expected, $key, $this->algorithm());
        return $result === 1;
    }
    /** @throws InvalidKeyProvided */
    private function getPublicKey(string $pem) : OpenSSLAsymmetricKey
    {
        return $this->validateKey(openssl_pkey_get_public($pem));
    }
    /**
     * Raises an exception when the key type is not the expected type
     *
     * @throws InvalidKeyProvided
     */
    private function validateKey(OpenSSLAsymmetricKey|bool $key) : OpenSSLAsymmetricKey
    {
        if (is_bool($key)) {
            throw InvalidKeyProvided::cannotBeParsed($this->fullOpenSSLErrorString());
        }
        $details = openssl_pkey_get_details($key);
        assert(is_array($details));
        assert(array_key_exists('bits', $details));
        assert(is_int($details['bits']));
        assert(array_key_exists('type', $details));
        assert(is_int($details['type']));
        $this->guardAgainstIncompatibleKey($details['type'], $details['bits']);
        return $key;
    }
    private function fullOpenSSLErrorString() : string
    {
        $error = '';
        while ($msg = openssl_error_string()) {
            $error .= PHP_EOL . '* ' . $msg;
        }
        return $error;
    }
    /** @throws InvalidKeyProvided */
    protected abstract function guardAgainstIncompatibleKey(int $type, int $lengthInBits) : void;
    /**
     * Returns which algorithm to be used to create/verify the signature (using OpenSSL constants)
     *
     * @internal
     */
    public abstract function algorithm() : int;
}