function amazon_login_process()
{
if (LoginWithAmazonUtility::shouldProcessAmazonLogin() || LoginWithAmazonUtility::shouldReregister()) {
$access_token = LoginWithAmazonUtility::getAcessToken();
if ($access_token) {
// Ensure CSRF token present and valid
$csrf_token = LoginWithAmazonUtility::getCsrfToken();
if ($csrf_token && LoginWithAmazonUtility::verifyCsrfToken($csrf_token)) {
$email = LoginWithAmazonUtility::getEmailFromAccessToken($access_token);
if ($email) {
// Find or create an Amazon user
$user = LoginWithAmazonUtility::findOrCreateUserByEmail($email);
if (is_wp_error($user)) {
// Display error on the login form.
LoginWithAmazonUtility::addLoginError($user->get_error_message());
} else {
// Log in the Amazon user and redirect to the homepage.
LoginWithAmazonUtility::createSessionFromUser($user);
}
} else {
// Could not retrieve email with the token. Provide a general login error to the user.
$error_msg = "There was an error when attempting to log you in.";
LoginWithAmazonUtility::addLoginError(__($error_msg, LoginWithAmazonUtility::$I18N_DOMAIN));
}
}
} else {
add_action('login_enqueue_scripts', 'loginwithamazon_enqueue_nonsecure_script');
}
}
}
function loginwithamazon_add_footer_script()
{
$popup = 'false';
if (!empty($_SERVER['HTTPS'])) {
$popup = 'true';
}
$csrf = LoginWithAmazonUtility::hmac($_SESSION[LoginWithAmazonUtility::$CSRF_AUTHENTICATOR_KEY]);
?>
<div id="amazon-root"></div>
<script type="text/javascript">
window.onAmazonLoginReady = function() {
amazon.Login.setClientId('<?php
echo get_option('loginwithamazon_client_id');
?>
');
amazon.Login.setUseCookie(true);
<?php
if (isset($_GET['loggedout']) && $_GET['loggedout'] == 'true') {
?>
amazon.Login.logout();
<?php
}
?>
};
(function(d) {
var a = d.createElement('script'); a.type = 'text/javascript';
a.async = true; a.id = 'amazon-login-sdk';
a.src = 'https://api-cdn.amazon.com/sdk/login1.js';
d.getElementById('amazon-root').appendChild(a);
})(document);
function activateLoginWithAmazonButtons(elementId) {
document.getElementById(elementId).onclick = function() {
var options = {
scope: 'profile',
state: '<?php
echo $csrf;
?>
',
popup: <?php
echo $popup;
?>
};
amazon.Login.authorize(options, '<?php
echo str_replace('http://', 'https://', site_url('wp-login.php'));
?>
?amazonLogin=1');
return false;
};
}
</script>
<?php
}
/**
* Set a login form message and call the filter so that it will display
*
* @param string $message
*/
public static function addLoginError($message)
{
self::$login_error_add = $message;
add_filter('login_message', array('LoginWithAmazonUtility', 'displayErrorOnLoginForm'), 10, 0);
}
