OAuth 2.0 configuration settings-PHP Chinese Network Q&A

I'm using phpmailer to send mail through smtp.google.com server but now it's not working because they say to use OAuth2.0 configuration.

I referred to some examples and created a sample page using Send Email Using PhpMailer and Gmail XOAUTH2 to test it, but it doesn't work. Can anyone point out what's wrong in the code?

This is my html page

<?php
namespace Phppot;

require_once ("lib/MailService.php");
$mailService = new MailService();
if (! empty($_POST['send'])) {
    $response = $mailService->sendContactMail($_POST);
}
?>
<html>
<head>
<title>Contact Us Form</title>
<link rel="stylesheet" type="text/css" href="assets/css/style.css" />
</head>
<body>
    <div class="form-container">
        <form name="frmContact" id="" frmContact"" method="post"
            action="" enctype="multipart/form-data"
            onsubmit="return validateContactForm()">

            <div class="input-row">
                <label style="padding-top: 20px;">Name</label> <span
                    id="userName-info" class="info"></span><br /> <input
                    type="text" class="input-field" name="userName"
                    id="userName" />
            </div>
            <div class="input-row">
                <label>Email</label> <span id="userEmail-info"
                    class="info"></span><br /> <input type="text"
                    class="input-field" name="userEmail" id="userEmail" />
            </div>
            <div class="input-row">
                <label>Subject</label> <span id="subject-info"
                    class="info"></span><br /> <input type="text"
                    class="input-field" name="subject" id="subject" />
            </div>
            <div class="input-row">
                <label>Message</label> <span id="userMessage-info"
                    class="info"></span><br />
                <textarea name="content" id="content"
                    class="input-field" cols="60" rows="6"></textarea>
            </div>
            <div>
                <input type="submit" name="send" class="btn-submit"
                    value="Send" />

                <div id="statusMessage">
                        <?php
                        if (! empty($response)) {
                            ?>
                            <p
                        class='<?php echo $response['type']; ?>Message'><?php echo $response['text']; ?></p>
                        <?php
                        }
                        ?>
                    </div>
            </div>
        </form>
    </div>
    <script type="text/javascript" src="assets/js/validation.js"></script>
</body>
</html>

This is get_oauth_token.php

<?php

/**
 * PHPMailer - PHP email creation and transport class.
 * PHP Version 5.5
 * @package PHPMailer
 * @see https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
 * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
 * @author Jim Jagielski (jimjag) <jimjag@gmail.com>
 * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
 * @author Brent R. Matzelle (original founder)
 * @copyright 2012 - 2020 Marcus Bointon
 * @copyright 2010 - 2012 Jim Jagielski
 * @copyright 2004 - 2009 Andy Prevost
 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
 * @note This program is distributed in the hope that it will be useful - WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 */

/**
 * Get an OAuth2 token from an OAuth2 provider.
 * * Install this script on your server so that it's accessible
 * as [https/http]://<yourdomain>/<folder>/get_oauth_token.php
 * e.g.: http://localhost/phpmailer/get_oauth_token.php
 * * Ensure dependencies are installed with 'composer install'
 * * Set up an app in your Google/Yahoo/Microsoft account
 * * Set the script address as the app's redirect URL
 * If no refresh token is obtained when running this file,
 * revoke access to your app and run the script again.
 */

namespace PHPMailer\PHPMailer;

/**
 * Aliases for League Provider Classes
 * Make sure you have added these to your composer.json and run `composer install`
 * Plenty to choose from here:
 * @see http://oauth2-client.thephpleague.com/providers/thirdparty/
 */
//@see https://github.com/thephpleague/oauth2-google
use League\OAuth2\Client\Provider\Google;
//@see https://packagist.org/packages/hayageek/oauth2-yahoo
use Hayageek\OAuth2\Client\Provider\Yahoo;
//@see https://github.com/stevenmaguire/oauth2-microsoft
use Stevenmaguire\OAuth2\Client\Provider\Microsoft;

if (!isset($_GET['code']) && !isset($_GET['provider'])) {
    ?>
<html>
<body>Select Provider:<br>
<a href='?provider=Google'>Google</a><br>
<a href='?provider=Yahoo'>Yahoo</a><br>
<a href='?provider=Microsoft'>Microsoft/Outlook/Hotmail/Live/Office365</a><br>
</body>
</html>
    <?php
    exit;
}

require 'vendor/autoload.php';

session_start();

$providerName = '';

if (array_key_exists('provider', $_GET)) {
    $providerName = $_GET['provider'];
    $_SESSION['provider'] = $providerName;
} elseif (array_key_exists('provider', $_SESSION)) {
    $providerName = $_SESSION['provider'];
}
if (!in_array($providerName, ['Google', 'Microsoft', 'Yahoo'])) {
    exit('Only Google, Microsoft and Yahoo OAuth2 providers are currently supported in this script.');
}

//These details are obtained by setting up an app in the Google developer console,
//or whichever provider you're using.
$clientId = 'random.apps.googleusercontent.com';
$clientSecret = 'random_key';

//If this automatic URL doesn't work, set it yourself manually to the URL of this script
$redirectUri = (isset($_SERVER['HTTPS']) ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
//$redirectUri = 'http://localhost/PHPMailer/redirect';

$params = [
    'clientId' => $clientId,
    'clientSecret' => $clientSecret,
    'redirectUri' => $redirectUri,
    'accessType' => 'offline'
];

$options = [];
$provider = null;

switch ($providerName) {
    case 'Google':
        $provider = new Google($params);
        $options = [
            'scope' => [
                'https://mail.google.com/'
            ]
        ];
        break;
    case 'Yahoo':
        $provider = new Yahoo($params);
        break;
    case 'Microsoft':
        $provider = new Microsoft($params);
        $options = [
            'scope' => [
                'wl.imap',
                'wl.offline_access'
            ]
        ];
        break;
}

if (null === $provider) {
    exit('Provider missing');
}

if (!isset($_GET['code'])) {
    //If we don't have an authorization code then get one
    $authUrl = $provider->getAuthorizationUrl($options);
    $_SESSION['oauth2state'] = $provider->getState();
    header('Location: ' . $authUrl);
    exit;
    //Check given state against previously stored one to mitigate CSRF attack
} elseif (empty($_GET['state']) || ($_GET['state'] !== $_SESSION['oauth2state'])) {
    unset($_SESSION['oauth2state']);
    unset($_SESSION['provider']);
    exit('Invalid state');
} else {
    unset($_SESSION['provider']);
    //Try to get an access token (using the authorization code grant)
    $token = $provider->getAccessToken(
        'authorization_code',
        [
            'code' => $_GET['code']
        ]
    );
    //Use this to interact with an API on the users behalf
    //Use this to get a new access token if the old one expires
    echo 'Refresh Token: ', $token->getRefreshToken();
}

When submitting the form, an error is displayed

Fatal Error: Uncaught Error: Class 'Phppot\SMTP' not found in lib/MailService.php:31 Stack trace: #0 index.php(7): Phppot\MailService->sendContactMail(Array) #1 {main} throws in lib/MailService.php line 31

Edited

This is my MailService.php file

<?php
namespace Phppot;

use Phppot\Config;
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

class MailService
{

    function sendContactMail($postValues)
    {
        $name = $postValues["userName"];
        $email = $postValues["userEmail"];
        $subject = $postValues["subject"];
        $content = $postValues["content"];

        require_once __DIR__ . '/Config.php';
        $recipientArray = explode(",", Config::RECIPIENT_EMAIL);

        require_once __DIR__ . '/../vendor/autoload.php';
        $mail = new PHPMailer(true);

        // Comment the following lines of code till $mail->Port to send
        // mail using phpmail instead of smtp.
        $mail->isSMTP();
        //Enable SMTP debugging
        //SMTP::DEBUG_OFF = off (for production use)
        //SMTP::DEBUG_CLIENT = client messages
        //SMTP::DEBUG_SERVER = client and server messages
        $mail->SMTPDebug = SMTP::DEBUG_OFF;

        //Set the hostname of the mail server
        $mail->Host = Config::SMTP_HOST;

        //Set the SMTP port number - 587 for authenticated TLS, a.k.a. RFC4409 SMTP submission
        $mail->Port = Config::SMTP_PORT;

        //Set the encryption mechanism to use - STARTTLS or SMTPS
        $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;

        //Whether to use SMTP authentication
        $mail->SMTPAuth = true;

        //Set AuthType to use XOAUTH2
        $mail->AuthType = 'XOAUTH2';

        //Fill in authentication details here
        //Either the gmail account owner, or the user that gave consent
        $oauthUserEmail = Config::OAUTH_USER_EMAIL;
        $clientId = Config::OAUTH_CLIENT_ID;
        $clientSecret = Config::OAUTH_SECRET_KEY;

        //Obtained by configuring and running get_oauth_token.php
        //after setting up an app in Google Developer Console.
        $refreshToken = Config::REFRESH_TOKEN;

        //Create a new OAuth2 provider instance
        $provider = new Google(
            [
                'clientId' => $clientId,
                'clientSecret' => $clientSecret,
            ]
            );

        //Pass the OAuth provider instance to PHPMailer
        $mail->setOAuth(
            new OAuth(
                [
                    'provider' => $provider,
                    'clientId' => $clientId,
                    'clientSecret' => $clientSecret,
                    'refreshToken' => $refreshToken,
                    'userName' => $oauthUserEmail,
                ]
                )
            );

        // Recipients
        $mail->setFrom(Config::SENDER_EMAIL, $name);
        $mail->addReplyTo($email, $name);

        $mail->addAddress(Config::RECIPIENT_EMAIL, Config::RECIPIENT_EMAIL);

        $mail->Subject = $subject;

        $mail->CharSet = PHPMailer::CHARSET_UTF8;
        $mail->msgHTML($mailBody);

        //Replace the plain text body with one created manually
        $mail->AltBody = 'This is a plain-text message body';

        if (!$mail->send()) {
            $output = json_encode(array('type'=>'error', 'text' => '<b>'.$from.'</b> is invalid.'));
            $output = json_encode(array('type'=>'error', 'text' => 'Server error. Please mail vincy@phppot.com'));
        } else {
            $output = json_encode(array('type'=>'message', 'text' => 'Thank you, I will get back to you shortly.'));
        }
        return $output;
    }
}

reply all(1)

P粉1079910302024-04-07 09:53:41 1 floor

You have a namespace problem. You are doing this:

namespace Phppot;

use Phppot\Config;
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

Then use this:

$mail->SMTPDebug = SMTP::DEBUG_OFF;

Because you have not imported the SMTP class name from the PHPMailer package into your namespace, it will look for a class named Phppot\SMTP, which does not exist, hence the error message . You can solve this problem by adding the following:

use PHPMailer\PHPMailer\SMTP;

This will make it use the correct SMTP classes from PHPMailer.

Please note that there may be another problem here. You have use Phppot\Config;, but you are already in the Phppot namespace, so you will be looking for something named Phppot\Phppot\Config, which may not exist. If the class is already in the namespace you declared, you don't need to use a use statement for it.

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