oauth.php

<?php
require_once(__DIR__.'/header.php');

// If we don't have an authorization code then get one
if (!isset($_GET['code'])) {

    // Fetch the authorization URL from the provider; this returns the
    // urlAuthorize option and generates and applies any necessary parameters
    // (e.g. state).
    $authorizationUrl = $provider->getAuthorizationUrl(array("scope"=>$scope));

    // Get the state generated for you and store it to the session.
    $_SESSION['oauth2state'] = $provider->getState();

    // Redirect the user to the authorization URL.
    header('Location: ' . $authorizationUrl);
    exit;

// Check given state against previously stored one to mitigate CSRF attack
} elseif (empty($_GET['state']) || (isset($_SESSION['oauth2state']) && $_GET['state'] !== $_SESSION['oauth2state'])) {

    if (isset($_SESSION['oauth2state'])) {
        unset($_SESSION['oauth2state']);
    }
    
    exit('Invalid state');

} else {

    try {
        // Try to get an access token using the authorization code grant.
        $accessToken = $provider->getAccessToken('authorization_code', [
            'code' => $_GET['code']
        ]);

        // Using the access token, we may look up details about the
        // resource owner.
        $resourceOwner = $provider->getResourceOwner($accessToken);

        header("refresh:5;url=index.php");//redirect to main page after login

        echo "Login successful for the character ".$resourceOwner->toArray()["CharacterName"]."(".$resourceOwner->toArray()["CharacterID"].")<br>You will be automatically redirected.....";

        //save accessToken and char info in session.
        $_SESSION['rftoken']=$accessToken->getRefreshToken();
        $_SESSION['charinfo']=$resourceOwner->toArray();

        $config = Swagger\Client\Configuration::getDefaultConfiguration()->setAccessToken($accessToken->getToken());

    } catch (\League\OAuth2\Client\Provider\Exception\IdentityProviderException $e) {

        // Failed to get the access token or user details.
        exit($e->getMessage());

    }

}

?>