Class "phpseclib3\Math\BigInteger\Engines\OpenSSL" not found in /home/{user}/public_html/oAuth/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/OpenSSL.php:23

[eliezercazares]

Environment details

• OS: Go Daddy Linux Shared Hosting
• PHP version: 8.1.0
• Package name and version: google-api-php-client--PHP8.2 (v2.15.1)

Steps to reproduce

1. ... Follow the set up instructions.
2. ... up to the point where you want to run an example
3. ... Run example idtoken.php

Code example

# example
<?php
/*
 * Copyright 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

include_once __DIR__ . '/../vendor/autoload.php';
include_once "templates/base.php";

echo pageHeader("Retrieving An Id Token");

/*************************************************
 * Ensure you've downloaded your oauth credentials
 ************************************************/
if (!$oauth_credentials = getOAuthCredentialsFile()) {
    echo missingOAuth2CredentialsWarning();
    return;
}

/************************************************
 * NOTICE:
 * The redirect URI is to the current page, e.g:
 * http://localhost:8080/idtoken.php
 ************************************************/
$redirect_uri = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];

$client = new Google\Client();
$client->setAuthConfig($oauth_credentials);
$client->setRedirectUri($redirect_uri);
$client->setScopes('email');

/************************************************
 * If we're logging out we just need to clear our
 * local access token in this case
 ************************************************/
if (isset($_REQUEST['logout'])) {
    unset($_SESSION['id_token_token']);
}

/************************************************
 * If we have a code back from the OAuth 2.0 flow,
 * we need to exchange that with the
 * Google\Client::fetchAccessTokenWithAuthCode()
 * function. We store the resultant access token
 * bundle in the session, and redirect to ourself.
 ************************************************/
if (isset($_GET['code'])) {
    $token = $client->fetchAccessTokenWithAuthCode($_GET['code'], $_SESSION['code_verifier']);

    // store in the session also
    $_SESSION['id_token_token'] = $token;

    // redirect back to the example
    header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
    return;
}

/************************************************
  If we have an access token, we can make
  requests, else we generate an authentication URL.
 ************************************************/
if (
  !empty($_SESSION['id_token_token'])
  && isset($_SESSION['id_token_token']['id_token'])
) {
    $client->setAccessToken($_SESSION['id_token_token']);
} else {
    $_SESSION['code_verifier'] = $client->getOAuth2Service()->generateCodeVerifier();
    $authUrl = $client->createAuthUrl();
}

/************************************************
  If we're signed in we can go ahead and retrieve
  the ID token, which is part of the bundle of
  data that is exchange in the authenticate step
  - we only need to do a network call if we have
  to retrieve the Google certificate to verify it,
  and that can be cached.
 ************************************************/
if ($client->getAccessToken()) {
    $token_data = $client->verifyIdToken();
}
?>

<div class="box">
  <?php echo $redirect_uri; ?>
<?php if (isset($authUrl)) : ?>
  <div class="request">
    <a class='login' href='<?= $authUrl ?>'>Connect Me!</a>
  </div>
<?php else : ?>
  <div class="data">
    <p>Here is the data from your Id Token:</p>
    <pre><?php var_export($token_data) ?></pre>
  </div>
<?php endif ?>
</div>

<?= pageFooter(__FILE__);

Result:

[17-Sep-2023 16:55:42 UTC] PHP Fatal error:  Uncaught Error: Class "phpseclib3\Math\BigInteger\Engines\OpenSSL" not found in /home/o61vcrn7bs63/public_html/oAuth/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/OpenSSL.php:23
Stack trace:
#0 /home/o61vcrn7bs63/public_html/oAuth/vendor/composer/ClassLoader.php(576): include()
#1 /home/o61vcrn7bs63/public_html/oAuth/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}()
#2 [internal function]: Composer\Autoload\ClassLoader->loadClass()
#3 /home/o61vcrn7bs63/public_html/oAuth/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/Engine.php(227): class_exists()
#4 /home/o61vcrn7bs63/public_html/oAuth/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger.php(106): phpseclib3\Math\BigInteger\Engines\Engine::setModExpEngine()
#5 /home/o61vcrn7bs63/public_html/oAuth/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger.php(148): phpseclib3\Math\BigInteger::setEngine()
#6 /home/o61vcrn7bs63/public_html/oAuth/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger.php(167): phpseclib3\Math\BigInteger::initialize_static_variables()
#7 /home/o61vcrn7bs63/public_html/oAuth/src/AccessToken/Verify.php(236): phpseclib3\Math\BigInteger->__construct()
#8 /home/o61vcrn7bs63/public_html/oAuth/src/AccessToken/Verify.php(111): Google\AccessToken\Verify->getPublicKey()
#9 /home/o61vcrn7bs63/public_html/oAuth/src/Client.php(820): Google\AccessToken\Verify->verifyIdToken()
#10 /home/o61vcrn7bs63/public_html/oAuth/examples/idtoken.php(93): Google\Client->verifyIdToken()
#11 {main}
  thrown in /home/o61vcrn7bs63/public_html/oAuth/vendor/phpseclib/phpseclib/phpseclib/Math/BigInteger/Engines/PHP/OpenSSL.php on line 23

By the way, the class exists at the path. it's a small class inhereting from Progenitor... looks like this:

<?php

/**
 * OpenSSL Modular Exponentiation Engine
 *
 * PHP version 5 and 7
 *
 * @author    Jim Wigginton <terrafrost@php.net>
 * @copyright 2017 Jim Wigginton
 * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
 * @link      http://pear.php.net/package/Math_BigInteger
 */

namespace phpseclib3\Math\BigInteger\Engines\PHP;

use phpseclib3\Math\BigInteger\Engines\OpenSSL as Progenitor;

/**
 * OpenSSL Modular Exponentiation Engine
 *
 * @author  Jim Wigginton <terrafrost@php.net>
 */
abstract class OpenSSL extends Progenitor
{
}

I'll be around for any questions or comments.

Thank you! -eliezer

[eliezercazares]

UPDATE:

I think I have identified the culprit...

" Uncaught Error: Class "phpseclib3\Math\BigInteger\Engines\OpenSSL""

phpseclib3 should be phpseclib ?

[eliezercazares]

UPDATE:

I think it's an issue with the namespaces, I can do some explicit require_once() for classes and some errors go away.

BTW I downloaded the ZIP file instead of using Composer.

[eliezercazares]

UPDATE:

I saw in the Release Log that you guys recently updated phpseclib.

I took vendor/phpseclib/. from PHP v7.4 and I did an overwrite on vendor/phpseclib/. in PHP v8.0

This fixed all my issues.

I am on PHP 8.1.0. Using phpseclib from 7.4 on top of the latest release works!

You guys might need to check that out?

Thanks for the framework/repo, it's awesome! With some troubleshooting it works.

[vishwarajanand]

Thanks for the update @eliezercazares , I will mark this as closed.