SSOPrincipalUtils.java

/**
 * Copyright 2016 StreamSets Inc.
 *
 * Licensed under the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.streamsets.lib.security.http;

import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;

public class SSOPrincipalUtils {

  static final String CLIENT_IP_HEADER = "CLIENT-IP";
  static final String UNKNOWN_IP = "unknown";

  public static String getClientIpAddress(HttpServletRequest request) {
    String ip = request.getHeader(CLIENT_IP_HEADER);
    if (ip == null || ip.length() == 0 || UNKNOWN_IP.equalsIgnoreCase(ip)) {
      ip = request.getRemoteAddr();
      if (ip == null || ip.length() == 0) {
        ip = UNKNOWN_IP;
      }
    }
    return ip;
  }

  public static void setRequestInfo(SSOPrincipal principal, ServletRequest request) {
    ((SSOPrincipalJson) principal).setRequestIpAddress(getClientIpAddress((HttpServletRequest)request));
  }

}