1 files changed, 162 insertions, 0 deletions
diff --git a/lib/phpmailer/get_oauth_token.php b/lib/phpmailer/get_oauth_token.php
new file mode 100644
index 0000000..2c26d0f
--- /dev/null
+++ b/lib/phpmailer/get_oauth_token.php
@@ -0,0 +1,162 @@
+<?php
+/**
+ * Get an OAuth2 token from Google.
+ * * Install this script on your server so that it's accessible
+ * as [https/http]://<yourdomain>/<folder>/get_oauth_token.php
+ * e.g.: http://localhost/phpmail/get_oauth_token.php
+ * * Ensure dependencies are installed with 'composer install'
+ * * Set up an app in your Google developer console
+ * * 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
+ * using link: https://accounts.google.com/b/0/IssuedAuthSubTokens and run the script again.
+ * This script requires PHP 5.4 or later
+ * PHP Version 5.4
+ */
+
+namespace League\OAuth2\Client\Provider;
+
+require 'vendor/autoload.php';
+
+use League\OAuth2\Client\Provider\Exception\IdentityProviderException;
+use League\OAuth2\Client\Token\AccessToken;
+use League\OAuth2\Client\Tool\BearerAuthorizationTrait;
+use Psr\Http\Message\ResponseInterface;
+
+session_start();
+
+//If this automatic URL doesn't work, set it yourself manually
+$redirectUri = isset($_SERVER['HTTPS']) ? 'https://' : 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
+//$redirectUri = 'http://localhost/phpmailer/get_oauth_token.php';
+
+//These details obtained are by setting up app in Google developer console.
+$clientId = 'RANDOMCHARS-----duv1n2.apps.googleusercontent.com';
+$clientSecret = 'RANDOMCHARS-----lGyjPcRtvP';
+
+class Google extends AbstractProvider
+{
+    use BearerAuthorizationTrait;
+
+    const ACCESS_TOKEN_RESOURCE_OWNER_ID = 'id';
+
+    /**
+     * @var string If set, this will be sent to google as the "access_type" parameter.
+     * @link https://developers.google.com/accounts/docs/OAuth2WebServer#offline
+     */
+    protected $accessType;
+
+    /**
+     * @var string If set, this will be sent to google as the "hd" parameter.
+     * @link https://developers.google.com/accounts/docs/OAuth2Login#hd-param
+     */
+    protected $hostedDomain;
+
+    /**
+     * @var string If set, this will be sent to google as the "scope" parameter.
+     * @link https://developers.google.com/gmail/api/auth/scopes
+     */
+    protected $scope;
+
+    public function getBaseAuthorizationUrl()
+    {
+        return 'https://accounts.google.com/o/oauth2/auth';
+    }
+
+    public function getBaseAccessTokenUrl(array $params)
+    {
+        return 'https://accounts.google.com/o/oauth2/token';
+    }
+
+    public function getResourceOwnerDetailsUrl(AccessToken $token)
+    {
+	return ' ';
+    }
+
+    protected function getAuthorizationParameters(array $options)
+    {
+	if (is_array($this->scope)) {
+            $separator = $this->getScopeSeparator();
+            $this->scope = implode($separator, $this->scope);
+        }
+
+        $params = array_merge(
+            parent::getAuthorizationParameters($options),
+            array_filter([
+                'hd'          => $this->hostedDomain,
+                'access_type' => $this->accessType,
+		'scope'       => $this->scope,
+                // if the user is logged in with more than one account ask which one to use for the login!
+                'authuser'    => '-1'
+            ])
+        );
+        return $params;
+    }
+
+    protected function getDefaultScopes()
+    {
+        return [
+            'email',
+            'openid',
+            'profile',
+        ];
+    }
+
+    protected function getScopeSeparator()
+    {
+        return ' ';
+    }
+
+    protected function checkResponse(ResponseInterface $response, $data)
+    {
+        if (!empty($data['error'])) {
+            $code  = 0;
+            $error = $data['error'];
+
+            if (is_array($error)) {
+                $code  = $error['code'];
+                $error = $error['message'];
+            }
+
+            throw new IdentityProviderException($error, $code, $data);
+        }
+    }
+
+    protected function createResourceOwner(array $response, AccessToken $token)
+    {
+        return new GoogleUser($response);
+    }
+}
+
+
+//Set Redirect URI in Developer Console as [https/http]://<yourdomain>/<folder>/get_oauth_token.php
+$provider = new Google(
+    array(
+        'clientId' => $clientId,
+        'clientSecret' => $clientSecret,
+        'redirectUri' => $redirectUri,
+        'scope' => array('https://mail.google.com/'),
+	'accessType' => 'offline'
+    )
+);
+
+if (!isset($_GET['code'])) {
+    // If we don't have an authorization code then get one
+    $authUrl = $provider->getAuthorizationUrl();
+    $_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']);
+    exit('Invalid state');
+} else {
+    // Try to get an access token (using the authorization code grant)
+    $token = $provider->getAccessToken(
+        'authorization_code',
+        array(
+            'code' => $_GET['code']
+        )
+    );
+
+    // Use this to get a new access token if the old one expires
+    echo 'Refresh Token: ' . $token->getRefreshToken();
+}