static function Facebook_registration()
{
// Decode Facebook data
$reg = WPAL2Int::Parse_signed_request($_REQUEST['user']);
// Check result
if ($reg == null) {
header('Content-type: text/plain');
_e('Facebook registration failed', c_al2fb_text_domain);
echo PHP_EOL;
if (get_option(c_al2fb_option_debug)) {
print_r($_REQUEST);
}
} else {
try {
// Validate
$url = 'https://graph.facebook.com/v2.2/' . $reg['user_id'];
$url = apply_filters('al2fb_url', $url);
$query = http_build_query(array('access_token' => $reg['oauth_token']), '', '&');
$response = WPAL2Int::Request($url, $query, 'GET');
$me = json_decode($response);
$email = empty($me) ? null : $me->email;
if (!get_option('users_can_register')) {
// Registration not enabled
header('Content-type: text/plain');
_e('User registration disabled', c_al2fb_text_domain);
echo PHP_EOL;
} else {
if (empty($email)) {
// E-mail missing
header('Content-type: text/plain');
_e('Facebook e-mail address missing', c_al2fb_text_domain);
echo PHP_EOL;
if (get_option(c_al2fb_option_debug)) {
print_r($reg);
print_r($me);
}
} else {
$user_ID = false;
if (email_exists($email)) {
$user = get_user_by('email', $email);
if ($user) {
$user_ID = $user->ID;
} else {
header('Content-type: text/plain');
_e('User not found', c_al2fb_text_domain);
echo PHP_EOL;
echo $email;
}
} else {
// Create new WP user
$user_ID = wp_insert_user(array('first_name' => $reg['registration']['first_name'], 'last_name' => $reg['registration']['last_name'], 'user_email' => $email, 'user_login' => $reg['registration']['user_name'], 'user_pass' => $reg['registration']['password']));
// Check result
if (is_wp_error($user_ID)) {
header('Content-type: text/plain');
_e($user_ID->get_error_message());
echo PHP_EOL;
if (get_option(c_al2fb_option_debug)) {
print_r($reg);
}
$user_ID = false;
}
}
// Redirect
if ($user_ID) {
update_user_meta($user_ID, c_al2fb_meta_facebook_id, $me->id);
$url = get_user_meta($user_ID, c_al2fb_meta_reg_success, true);
if (empty($url)) {
$url = get_home_url();
}
wp_redirect($url);
}
}
}
} catch (Exception $e) {
// Communication error?
header('Content-type: text/plain');
_e('Could not verify Facebook registration', c_al2fb_text_domain);
echo PHP_EOL;
echo $e->getMessage();
if (get_option(c_al2fb_option_debug)) {
print_r($_REQUEST);
print_r($response);
}
}
}
}