/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#if defined(XP_MACOSX) || defined(XP_LINUX)

#include <unistd.h>

#elif defined(XP_WIN)

#include <winsock2.h>

#endif

#include "nsNetworkInfoService.h"

#include "mozilla/ScopeExit.h"

#if defined(XP_MACOSX) || defined(XP_WIN) || defined(XP_LINUX)

#include "NetworkInfoServiceImpl.h"

#else

#error "Unsupported platform for nsNetworkInfoService!  Check moz.build"

#endif

namespace mozilla {

namespace net {

NS_IMPL_ISUPPORTS(nsNetworkInfoService,

                  nsINetworkInfoService)

nsNetworkInfoService::nsNetworkInfoService() = default;

nsresult

nsNetworkInfoService::Init()

{

  return NS_OK;

}

nsresult

nsNetworkInfoService::ListNetworkAddresses(nsIListNetworkAddressesListener* aListener)

{

  nsresult rv;

  AddrMapType addrMap;

  rv = DoListAddresses(addrMap);

  if (NS_WARN_IF(NS_FAILED(rv))) {

    aListener->OnListNetworkAddressesFailed();

    return NS_OK;

  }

  uint32_t addrCount = addrMap.Count();

  const char** addrStrings = (const char**) malloc(sizeof(*addrStrings) * addrCount);

  if (!addrStrings) {

    aListener->OnListNetworkAddressesFailed();

    return NS_OK;

  }

  auto autoFreeAddrStrings = MakeScopeExit([&] {

    free(addrStrings);

  });

  uint32_t idx = 0;

  for (auto iter = addrMap.Iter(); !iter.Done(); iter.Next()) {

    addrStrings[idx++] = iter.Data().get();

  }

  aListener->OnListedNetworkAddresses(addrStrings, addrCount);

  return NS_OK;

}

// TODO: Bug 1275373: https://bugzilla.mozilla.org/show_bug.cgi?id=1275373

// Use platform-specific implementation of DoGetHostname on Cocoa and Windows.

static nsresult

DoGetHostname(nsACString& aHostname)

{

  char hostnameBuf[256];

  int result = gethostname(hostnameBuf, 256);

  if (result == -1) {

    return NS_ERROR_FAILURE;

  }

  // Ensure that there is always a terminating NUL byte.

  hostnameBuf[255] = '\0';

  // Find the first '.', terminate string there.

  char* dotLocation = strchr(hostnameBuf, '.');

  if (dotLocation) {

    *dotLocation = '\0';

  }

  if (strlen(hostnameBuf) == 0) {

    return NS_ERROR_FAILURE;

  }

  aHostname.AssignASCII(hostnameBuf);

  return NS_OK;

}

nsresult

nsNetworkInfoService::GetHostname(nsIGetHostnameListener* aListener)

{

  nsresult rv;

  nsCString hostnameStr;

  rv = DoGetHostname(hostnameStr);

  if (NS_FAILED(rv)) {

    aListener->OnGetHostnameFailed();

    return NS_OK;

  }

  aListener->OnGotHostname(hostnameStr);

  return NS_OK;

}

} // namespace net

} // namespace mozilla