Replaces the default /oauth/me method for WordPress OAuth Server

modify_core_me_resource_endpoint

add_filter('wo_endpoints','wo_extend_resource_api', 2);
function wo_extend_resource_api ($methods)
{
   $methods['me'] = array('func'=>'_wo_me');
   return $methods;
}

/**
 * Replaces the default me enpoint
 * @param  [type] $token [description]
 * @return [type]        [description]
 */
function _wo_me ( $token=null )
{
  $user_id = &$token['user_id'];

  global $wpdb;
  $me_data = $wpdb->get_row("SELECT * FROM {$wpdb->prefix}users WHERE ID=$user_id", ARRAY_A);
  
  /** prevent sensative data - makes me happy ;) */
  unset($me_data['user_pass']);
  unset($me_data['user_activation_key']);
  unset($me_data['user_url']);
  
  // add user metadata
  $infometa = $wpdb->get_results("SELECT meta_key, meta_value FROM {$wpdb->prefix}usermeta WHERE user_id = ".$user_id."");
  foreach ($infometa as $metarow) {
    // exclude sensitive data
    if (1 === preg_match( "/pmpro_|token|wp_|theme_my_login_security|credit|card|password/i", + $metarow->meta_key)) {
      continue;
    }
    
    $key = $metarow->meta_key;
    $me_data[$key] = unserialize($metarow->meta_value);
  }

  $response = new OAuth2\Response($me_data);
  $response->send();
  exit;
}