protected function startFlow()
{
$client = new Client(["clientId" => self::$ID, "clientSecret" => self::$secret, "redirectUri" => "http://localhost:8080/", "scopes" => ["profile", "email"], "hostedDomain" => "localhost:8080"]);
if (!empty($_GET["error"])) {
// User probably denied access.
die("Got an error: {$_GET['error']}");
} else {
if (empty($_GET["code"])) {
// We need to get an authorisation code.
$authUrl = $client->getAuthorizationUrl();
$_SESSION["oauth2state"] = $client->state;
Headers::redirect($authUrl);
exit;
} else {
if (empty($_GET["state"]) || $_GET["state"] !== $_SESSION["oauth2state"]) {
// State is invalid - possible CSRF attack.
unset($_SESSION["oauth2state"]);
die("Invalid state");
} else {
// Try to get an access token using the authorisation grant.
try {
$token = $client->getAccessToken("authorization_code", ["code" => $_GET["code"]]);
$this->details = $client->getUserDetails($token);
unset($_SESSION["oauth2state"]);
} catch (\Exception $ex) {
unset($_SESSION["oauth2state"]);
die("Something went wrong! " . $ex->getMessage());
}
}
}
}
}
/**
* It will return uid, token and information user to save database
*
* @return array
*/
public function authorize()
{
$this->view->disable();
$provider = new Google(['clientId' => $this->clientId, 'clientSecret' => $this->clientSecret, 'redirectUri' => $this->redirectUriAuthorize]);
$code = $this->request->getQuery('code');
$state = $this->request->getQuery('state');
if (!isset($code)) {
// If we don't have an authorization code then get one
$authUrl = $provider->getAuthorizationUrl();
$this->session->set('oauth2state', $provider->state);
return $this->response->redirect($authUrl);
// Check given state against previously stored one to mitigate CSRF attack
} elseif (empty($state) || $state !== $this->session->get('oauth2state')) {
$this->session->remove('oauth2state');
exit('Invalid state');
} else {
// Try to get an access token (using the authorization code grant)
$token = $provider->getAccessToken('authorization_code', ['code' => $code]);
$uid = $provider->getUserUid($token);
$userDetails = $provider->getUserDetails($token);
return array($uid, $token, $userDetails);
}
}
