Benjamin de Bos Benjamin de Bos - 6 months ago 90
PHP Question

Google-api-php Refresh Token returns invalid_grant

I've nearly searched every result of the first page of google for this. But can't seem to find the answer. I'm working with a refresh_token by Google's API and receiving:

Error refreshing the OAuth2 token, message: '{ "error" : "invalid_grant" }


What i'm doing. First: i'm creating and storing a persistant connection to the google api:

$client = new Google_Client();
$client->setClientId('xxxxxx-s73q0pa41aq3i2kcpatmpas6e6kkp99h.apps.googleusercontent.com');
$client->setClientSecret('xxxxxxxxxxxx');
$client->setRedirectUri('http://xxxxxxxx/generaterefreshtoken.php');
$client->setScopes(array('https://www.googleapis.com/auth/drive'));
$client->setAccessType('offline');


if (isset($_GET['code'])) {
$client->authenticate();
$_SESSION['token'] = $client->getAccessToken();
$redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));
}

if (isset($_SESSION['token'])) {
$client->setAccessToken($_SESSION['token']);
}

if (isset($_REQUEST['logout'])) {
unset($_SESSION['token']);
$client->revokeToken();
}

if ($client->getAccessToken()) {

$jsonarray = json_decode($client->getAccessToken());
$arrGoogleAuth['access_token']=$jsonarray->access_token;
$arrGoogleAuth['refresh_token']=$jsonarray->refresh_token;
//filewrite

$myFile = "refreshtoken.conf";
$fh = fopen($myFile, 'w') or die("can't open file");
fwrite($fh, $client->getAccessToken());
fclose($fh);


/*

die();

$service = new Google_DriveService($client);
$file = new Google_DriveFile();
$file->setTitle('My document.txt');
$file->setDescription('A test document');
$file->setMimeType('text/plain');

$data = file_get_contents('document.txt');

$createdFile = $service->files->insert($file, array(
'data' => $data,
'mimeType' => 'text/plain',
));

print_r($createdFile);
*/



// The access token may have been updated lazily.
$_SESSION['token'] = $client->getAccessToken();
} else {
$auth = $client->createAuthUrl();
header("Location: $auth");
}


So basicly everything runs and the token gets stored in a textfile:

{
"access_token":"xxxxxxxxxxxxxxxN4U0ys2wy5monxs0Xh5fu5ayKL0OIENo-d1sN6g3YA",
"token_type":"Bearer",
"expires_in":3600,
"refresh_token":"xxxxxxxxxxxxDON-l90BNUcJgnkfZWDfg",
"created":1358120143
}


When i'm trying to auth using the following code:

$client = new Google_Client();
$client->setClientId($googleDriveConfig['clientid']);
$client->setClientSecret($googleDriveConfig['clientsecret']);
$client->setRedirectUri(curPageURL);
$client->setScopes(array('https://www.googleapis.com/auth/drive'));
$client->refreshToken(file_get_contents('../_config/refreshtoken.conf'));
$client->authenticate();


I'm getting the following error:
Error refreshing the OAuth2 token, message: '{ "error" : "invalid_grant" }

Answer

Before Authenticate, there must be something like:

$client->grantType("refresh_token")