chromium/net/dns/loopback_only.cc

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40284755): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif

#include "net/dns/loopback_only.h"

#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/logging.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/threading/scoped_blocking_call.h"
#include "build/build_config.h"
#include "net/base/network_change_notifier.h"
#include "net/base/network_interfaces.h"
#include "net/base/sys_addrinfo.h"

#if BUILDFLAG(IS_POSIX) || BUILDFLAG(IS_FUCHSIA)
#include <net/if.h>
#if BUILDFLAG(IS_ANDROID)
#include "net/android/network_library.h"
#else  // BUILDFLAG(IS_ANDROID)
#include <ifaddrs.h>
#endif  // BUILDFLAG(IS_ANDROID)
#endif  // BUILDFLAG(IS_POSIX) || BUILDFLAG(IS_FUCHSIA)

#if BUILDFLAG(IS_LINUX)
#include <linux/rtnetlink.h>
#include "net/base/address_map_linux.h"
#include "net/base/address_tracker_linux.h"
#include "net/base/network_interfaces_linux.h"
#endif

namespace net {

namespace {

#if (BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_ANDROID)) || BUILDFLAG(IS_FUCHSIA)
bool HaveOnlyLoopbackAddressesUsingGetifaddrs() { … }
#endif  // (BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_ANDROID)) ||
        // BUILDFLAG(IS_FUCHSIA)

// This implementation will always be posted to a thread pool.
bool HaveOnlyLoopbackAddressesSlow() { … }

#if BUILDFLAG(IS_LINUX)
// This implementation can run on the main thread as it will not block.
bool HaveOnlyLoopbackAddressesFast(AddressMapOwnerLinux* address_map_owner) { … }
#endif  // BUILDFLAG(IS_LINUX)

}  // namespace

void RunHaveOnlyLoopbackAddressesJob(
    base::OnceCallback<void(bool)> finished_cb) { … }

}  // namespace net