147 lines
4.8 KiB
PHP
147 lines
4.8 KiB
PHP
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<?php
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/**
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* PHPMailer - PHP email creation and transport class.
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* PHP Version 5.5
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* @package PHPMailer
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* @see https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
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* @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
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* @author Jim Jagielski (jimjag) <jimjag@gmail.com>
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* @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
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* @author Brent R. Matzelle (original founder)
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* @copyright 2012 - 2020 Marcus Bointon
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* @copyright 2010 - 2012 Jim Jagielski
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* @copyright 2004 - 2009 Andy Prevost
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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* @note This program is distributed in the hope that it will be useful - WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/**
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* Get an OAuth2 token from an OAuth2 provider.
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* * Install this script on your server so that it's accessible
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* as [https/http]://<yourdomain>/<folder>/get_oauth_token.php
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* e.g.: http://localhost/phpmailer/get_oauth_token.php
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* * Ensure dependencies are installed with 'composer install'
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* * Set up an app in your Google/Yahoo/Microsoft account
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* * Set the script address as the app's redirect URL
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* If no refresh token is obtained when running this file,
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* revoke access to your app and run the script again.
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*/
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namespace PHPMailer\PHPMailer;
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/**
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* Aliases for League Provider Classes
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* Make sure you have added these to your composer.json and run `composer install`
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* Plenty to choose from here:
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* @see http://oauth2-client.thephpleague.com/providers/thirdparty/
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*/
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// @see https://github.com/thephpleague/oauth2-google
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use League\OAuth2\Client\Provider\Google;
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// @see https://packagist.org/packages/hayageek/oauth2-yahoo
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use Hayageek\OAuth2\Client\Provider\Yahoo;
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// @see https://github.com/stevenmaguire/oauth2-microsoft
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use Stevenmaguire\OAuth2\Client\Provider\Microsoft;
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if (!isset($_GET['code']) && !isset($_GET['provider'])) {
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?>
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<html>
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<body>Select Provider:<br/>
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<a href='?provider=Google'>Google</a><br/>
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<a href='?provider=Yahoo'>Yahoo</a><br/>
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<a href='?provider=Microsoft'>Microsoft/Outlook/Hotmail/Live/Office365</a><br/>
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</body>
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</html>
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<?php
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exit;
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}
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require 'vendor/autoload.php';
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session_start();
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$providerName = '';
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if (array_key_exists('provider', $_GET)) {
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$providerName = $_GET['provider'];
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$_SESSION['provider'] = $providerName;
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} elseif (array_key_exists('provider', $_SESSION)) {
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$providerName = $_SESSION['provider'];
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}
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if (!in_array($providerName, ['Google', 'Microsoft', 'Yahoo'])) {
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exit('Only Google, Microsoft and Yahoo OAuth2 providers are currently supported in this script.');
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}
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//These details are obtained by setting up an app in the Google developer console,
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//or whichever provider you're using.
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$clientId = 'RANDOMCHARS-----duv1n2.apps.googleusercontent.com';
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$clientSecret = 'RANDOMCHARS-----lGyjPcRtvP';
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//If this automatic URL doesn't work, set it yourself manually to the URL of this script
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$redirectUri = (isset($_SERVER['HTTPS']) ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
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//$redirectUri = 'http://localhost/PHPMailer/redirect';
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$params = [
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'clientId' => $clientId,
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'clientSecret' => $clientSecret,
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'redirectUri' => $redirectUri,
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'accessType' => 'offline'
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];
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$options = [];
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$provider = null;
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switch ($providerName) {
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case 'Google':
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$provider = new Google($params);
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$options = [
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'scope' => [
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'https://mail.google.com/'
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]
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];
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break;
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case 'Yahoo':
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$provider = new Yahoo($params);
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break;
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case 'Microsoft':
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$provider = new Microsoft($params);
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$options = [
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'scope' => [
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'wl.imap',
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'wl.offline_access'
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]
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];
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break;
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}
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if (null === $provider) {
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exit('Provider missing');
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}
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if (!isset($_GET['code'])) {
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// If we don't have an authorization code then get one
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$authUrl = $provider->getAuthorizationUrl($options);
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$_SESSION['oauth2state'] = $provider->getState();
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header('Location: ' . $authUrl);
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exit;
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// Check given state against previously stored one to mitigate CSRF attack
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} elseif (empty($_GET['state']) || ($_GET['state'] !== $_SESSION['oauth2state'])) {
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unset($_SESSION['oauth2state']);
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unset($_SESSION['provider']);
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exit('Invalid state');
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} else {
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unset($_SESSION['provider']);
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// Try to get an access token (using the authorization code grant)
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$token = $provider->getAccessToken(
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'authorization_code',
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[
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'code' => $_GET['code']
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]
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);
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// Use this to interact with an API on the users behalf
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// Use this to get a new access token if the old one expires
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echo 'Refresh Token: ', $token->getRefreshToken();
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}
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