chromium/chrome/browser/ash/net/network_diagnostics/lan_connectivity_routine.cc

// 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/ash/net/network_diagnostics/lan_connectivity_routine.h"

#include <utility>

#include "base/functional/bind.h"
#include "chromeos/ash/services/network_config/in_process_instance.h"
#include "chromeos/services/network_config/public/cpp/cros_network_config_util.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/base/net_errors.h"

namespace ash {
namespace network_diagnostics {

namespace {

namespace mojom = ::chromeos::network_diagnostics::mojom;
using chromeos::network_config::mojom::CrosNetworkConfig;
using chromeos::network_config::mojom::FilterType;
using chromeos::network_config::mojom::NetworkFilter;
using chromeos::network_config::mojom::NetworkStatePropertiesPtr;
using chromeos::network_config::mojom::NetworkType;

void GetNetworkConfigService(
    mojo::PendingReceiver<CrosNetworkConfig> receiver) {
  network_config::BindToInProcessInstance(std::move(receiver));
}

}  // namespace

LanConnectivityRoutine::LanConnectivityRoutine(mojom::RoutineCallSource source)
    : NetworkDiagnosticsRoutine(source) {
  set_verdict(mojom::RoutineVerdict::kNotRun);
  GetNetworkConfigService(
      remote_cros_network_config_.BindNewPipeAndPassReceiver());
}

LanConnectivityRoutine::~LanConnectivityRoutine() = default;

mojom::RoutineType LanConnectivityRoutine::Type() {
  return mojom::RoutineType::kLanConnectivity;
}

bool LanConnectivityRoutine::CanRun() {
  DCHECK(remote_cros_network_config_);
  return true;
}

void LanConnectivityRoutine::Run() {
  FetchActiveNetworks();
}

void LanConnectivityRoutine::AnalyzeResultsAndExecuteCallback() {
  if (lan_connected_) {
    set_verdict(mojom::RoutineVerdict::kNoProblem);
  } else {
    set_verdict(mojom::RoutineVerdict::kProblem);
    problems_.push_back(mojom::LanConnectivityProblem::kNoLanConnectivity);
  }
  set_problems(mojom::RoutineProblems::NewLanConnectivityProblems(problems_));
  ExecuteCallback();
}

void LanConnectivityRoutine::FetchActiveNetworks() {
  DCHECK(remote_cros_network_config_);
  // The usage of `base::Unretained(this)` here is safe because
  // |remote_cros_network_config_| is a mojo::Remote owned by |this|.
  remote_cros_network_config_->GetNetworkStateList(
      NetworkFilter::New(FilterType::kActive, NetworkType::kAll,
                         chromeos::network_config::mojom::kNoLimit),
      base::BindOnce(&LanConnectivityRoutine::OnNetworkStateListReceived,
                     base::Unretained(this)));
}

// Process the network interface information.
void LanConnectivityRoutine::OnNetworkStateListReceived(
    std::vector<NetworkStatePropertiesPtr> networks) {
  for (const NetworkStatePropertiesPtr& network : networks) {
    if (chromeos::network_config::StateIsConnected(network->connection_state)) {
      lan_connected_ = true;
      break;
    }
  }
  AnalyzeResultsAndExecuteCallback();
}

}  // namespace network_diagnostics
}  // namespace ash