* Verify credentials and redirect to based on response from Twitter.
*/
/* Start session and load lib */
session_start();
require_once dirname(__DIR__) . '/TwitterOAuth.php';
require_once 'config.php';
use twitteroauth\TwitterOAuth;
/* If the oauth_token is old redirect to the connect page. */
if (isset($_REQUEST['oauth_token']) && $_SESSION['oauth_token'] !== $_REQUEST['oauth_token']) {
$_SESSION['oauth_status'] = 'oldtoken';
header('Location: ./clearsessions.php');
}
/* Create TwitteroAuth object with app key/secret and token key/secret from default phase */
$connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, $_SESSION['oauth_token'], $_SESSION['oauth_token_secret']);
/* Request access tokens from twitter */
$access_token = $connection->getAccessToken($_REQUEST['oauth_verifier']);
/* Save the access tokens. Normally these would be saved in a database for future use. */
$_SESSION['access_token'] = $access_token;
/* Remove no longer needed request tokens */
unset($_SESSION['oauth_token']);
unset($_SESSION['oauth_token_secret']);
$response_info = $connection->getLastResponseInfo();
/* If HTTP response is 200 continue otherwise send to connect page to retry */
if (200 == $response_info['http_code']) {
/* The user has been verified and the access tokens can be saved for future use */
$_SESSION['status'] = 'verified';
header('Location: ./index.php');
} else {
/* Save HTTP status for error dialog on connnect page.*/
header('Location: ./clearsessions.php');
}