stub_resolver_config_reader.cc | Explore in Territory

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/net/stub_resolver_config_reader.h"

#include <set>
#include <string>
#include <utility>
#include <vector>

#include "base/check.h"
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/metrics/field_trial_params.h"
#include "base/metrics/histogram_macros.h"
#include "base/notreached.h"
#include "base/values.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/net/default_dns_over_https_config_source.h"
#include "chrome/browser/net/dns_over_https_config_source.h"
#include "chrome/browser/net/secure_dns_config.h"
#include "chrome/browser/net/secure_dns_util.h"
#include "chrome/browser/policy/chrome_browser_policy_connector.h"
#include "chrome/common/chrome_features.h"
#include "chrome/common/pref_names.h"
#include "components/flags_ui/pref_service_flags_storage.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/network_service_instance.h"
#include "net/base/features.h"
#include "net/dns/public/dns_over_https_config.h"
#include "net/dns/public/secure_dns_mode.h"
#include "net/dns/public/util.h"
#include "services/network/public/mojom/host_resolver.mojom.h"
#include "services/network/public/mojom/network_service.mojom.h"

#if BUILDFLAG(IS_ANDROID)
#include "base/android/build_info.h"
#include "chrome/browser/enterprise/util/android_enterprise_info.h"
#endif

#if BUILDFLAG(IS_WIN)
#include "base/enterprise_util.h"
#include "base/win/win_util.h"
#include "chrome/browser/win/parental_controls.h"
#endif

namespace {

// Detailed descriptions of the secure DNS mode. These values are logged to UMA.
// Entries should not be renumbered and numeric values should never be reused.
// Please keep in sync with "SecureDnsModeDetails" in
// src/tools/metrics/histograms/enums.xml.
enum class SecureDnsModeDetailsForHistogram { … };

#if BUILDFLAG(IS_WIN)
bool ShouldDisableDohForWindowsParentalControls() {
  return GetWinParentalControls().web_filter;
}
#endif  // BUILDFLAG(IS_WIN)

// Check the AsyncDns field trial and return true if it should be enabled. On
// Android this includes checking the Android version in the field trial.
bool ShouldEnableAsyncDns() { … }

}  // namespace

// static
constexpr base::TimeDelta StubResolverConfigReader::kParentalControlsCheckDelay;

StubResolverConfigReader::StubResolverConfigReader(PrefService* local_state,
                                                   bool set_up_pref_defaults)
    : … { … }

StubResolverConfigReader::~StubResolverConfigReader() = default;

// static
void StubResolverConfigReader::RegisterPrefs(PrefRegistrySimple* registry) { … }

SecureDnsConfig StubResolverConfigReader::GetSecureDnsConfiguration(
    bool force_check_parental_controls_for_automatic_mode) { … }

void StubResolverConfigReader::UpdateNetworkService(bool record_metrics) { … }

bool StubResolverConfigReader::ShouldDisableDohForManaged() { … }

bool StubResolverConfigReader::ShouldDisableDohForParentalControls() { … }

void StubResolverConfigReader::SetOverrideDnsOverHttpsConfigSource(
    std::unique_ptr<DnsOverHttpsConfigSource> doh_source) { … }

const DnsOverHttpsConfigSource*
StubResolverConfigReader::GetDnsOverHttpsConfigSource() const { … }

void StubResolverConfigReader::OnParentalControlsDelayTimer() { … }

bool StubResolverConfigReader::GetInsecureStubResolverEnabled() { … }

SecureDnsConfig StubResolverConfigReader::GetAndUpdateConfiguration(
    bool force_check_parental_controls_for_automatic_mode,
    bool record_metrics,
    bool update_network_service) { … }

#if BUILDFLAG(IS_ANDROID)
void StubResolverConfigReader::OnAndroidOwnedStateCheckComplete(
    bool has_profile_owner,
    bool has_device_owner) {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  android_has_owner_ = has_profile_owner || has_device_owner;
  // update the network service if the actual result is "true" to save time.
  if (android_has_owner_.value())
    UpdateNetworkService(false /* record_metrics */);
}
#endif
chromium/chrome/browser/net/stub_resolver_config_reader.cc
