chromium/net/proxy_resolution/proxy_config_service.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "net/proxy_resolution/proxy_config_service.h"

#include <memory>

#include "base/logging.h"
#include "base/memory/scoped_refptr.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "net/proxy_resolution/proxy_config_with_annotation.h"

#if BUILDFLAG(IS_WIN)
#include "net/proxy_resolution/win/proxy_config_service_win.h"
#elif BUILDFLAG(IS_IOS)
#include "net/proxy_resolution/proxy_config_service_ios.h"
#elif BUILDFLAG(IS_MAC)
#include "net/proxy_resolution/proxy_config_service_mac.h"
#elif BUILDFLAG(IS_LINUX)
#include "net/proxy_resolution/proxy_config_service_linux.h"
#elif BUILDFLAG(IS_ANDROID)
#include "net/proxy_resolution/proxy_config_service_android.h"
#endif

#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX)
#include "net/traffic_annotation/network_traffic_annotation.h"
#endif

namespace net {

namespace {
#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX)
constexpr net::NetworkTrafficAnnotationTag kSystemProxyConfigTrafficAnnotation = …;
#endif

#if BUILDFLAG(IS_CHROMEOS_ASH)
class UnsetProxyConfigService : public ProxyConfigService {
 public:
  UnsetProxyConfigService() = default;
  ~UnsetProxyConfigService() override = default;

  void AddObserver(Observer* observer) override {}
  void RemoveObserver(Observer* observer) override {}
  ConfigAvailability GetLatestProxyConfig(
      ProxyConfigWithAnnotation* config) override {
    return CONFIG_UNSET;
  }
};
#endif

// Config getter that always returns direct settings.
class ProxyConfigServiceDirect : public ProxyConfigService { … };

}  // namespace

// static
std::unique_ptr<ProxyConfigService>
ProxyConfigService::CreateSystemProxyConfigService(
    scoped_refptr<base::SequencedTaskRunner> main_task_runner) { … }

bool ProxyConfigService::UsesPolling() { … }

}  // namespace net