pagespeed/kernel/base/hostname_util.h

/*
 * Licensed to 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.
 */

// A set of utility functions for handling hostnames.

#ifndef PAGESPEED_KERNEL_BASE_HOSTNAME_UTIL_H_
#define PAGESPEED_KERNEL_BASE_HOSTNAME_UTIL_H_

#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/base/string_util.h"

namespace net_instaweb {

// Determine the local hostname.
GoogleString GetHostname();

// Determine if the given host is localhost or a variant thereof:
// localhost, 127.0.0.1 (IPv4), ::1 (IPv6), or hostname (the local hostname).
// TODO(sligocki): Cover other representations of IPv6 localhost IP?
// TODO(matterbury): Handle all 127.0.0.0/8 address since they are 'localhost'.
bool IsLocalhost(StringPiece host_to_test, StringPiece hostname);

}  // namespace net_instaweb

#endif  // PAGESPEED_KERNEL_BASE_HOSTNAME_UTIL_H_