/*
 *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef RTC_BASE_IFADDRS_CONVERTER_H_
#define RTC_BASE_IFADDRS_CONVERTER_H_

// IWYU pragma: begin_exports
#if defined(WEBRTC_ANDROID)
#include "rtc_base/ifaddrs_android.h"
#elif defined(WEBRTC_POSIX)
#include <ifaddrs.h>
#endif  // WEBRTC_ANDROID
// IWYU pragma: end_exports

#include "rtc_base/ip_address.h"

namespace webrtc {

// This class converts native interface addresses to our internal IPAddress
// class. Subclasses should override ConvertNativeToIPAttributes to implement
// the different ways of retrieving IPv6 attributes for various POSIX platforms.
class IfAddrsConverter {
 public:
  IfAddrsConverter();
  virtual ~IfAddrsConverter();
  virtual bool ConvertIfAddrsToIPAddress(const struct ifaddrs* interface,
                                         InterfaceAddress* ipaddress,
                                         IPAddress* mask);

 protected:
  virtual bool ConvertNativeAttributesToIPAttributes(
      const struct ifaddrs* interface,
      int* ip_attributes);
};

IfAddrsConverter* CreateIfAddrsConverter();

}  //  namespace webrtc

// Re-export symbols from the webrtc namespace for backwards compatibility.
// TODO(bugs.webrtc.org/4222596): Remove once all references are updated.
#ifdef WEBRTC_ALLOW_DEPRECATED_NAMESPACES
namespace rtc {
using ::webrtc::CreateIfAddrsConverter;
using ::webrtc::IfAddrsConverter;
}  // namespace rtc
#endif  // WEBRTC_ALLOW_DEPRECATED_NAMESPACES

#endif  // RTC_BASE_IFADDRS_CONVERTER_H_