1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
  117
  118
  119
  120
  121
  122
  123
  124
  125
  126
  127
  128
  129
  130
  131
  132
  133
  134
  135
  136
  137
  138
  139


content / browser / generic_sensor / frame_sensor_provider_proxy.cc [blame]

// 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.

#include "content/browser/generic_sensor/frame_sensor_provider_proxy.h"

#include <vector>

#include "base/notreached.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/permission_controller.h"
#include "content/public/browser/permission_request_description.h"
#include "content/public/browser/web_contents_user_data.h"
#include "services/device/public/mojom/sensor_provider.mojom-shared.h"
#include "third_party/blink/public/common/permissions/permission_utils.h"
#include "third_party/blink/public/mojom/permissions/permission_status.mojom.h"

using device::mojom::SensorType;

namespace features {
BASE_FEATURE(kAllowSensorsToEnterBfcache,
             "AllowSensorsToEnterBfcache",
             base::FEATURE_DISABLED_BY_DEFAULT);
}

namespace content {

namespace {

constexpr std::vector<blink::mojom::PermissionsPolicyFeature>
SensorTypeToPermissionsPolicyFeatures(SensorType type) {
  switch (type) {
    case SensorType::AMBIENT_LIGHT:
      return {blink::mojom::PermissionsPolicyFeature::kAmbientLightSensor};
    case SensorType::ACCELEROMETER:
    case SensorType::LINEAR_ACCELERATION:
    case SensorType::GRAVITY:
      return {blink::mojom::PermissionsPolicyFeature::kAccelerometer};
    case SensorType::GYROSCOPE:
      return {blink::mojom::PermissionsPolicyFeature::kGyroscope};
    case SensorType::MAGNETOMETER:
      return {blink::mojom::PermissionsPolicyFeature::kMagnetometer};
    case SensorType::ABSOLUTE_ORIENTATION_EULER_ANGLES:
    case SensorType::ABSOLUTE_ORIENTATION_QUATERNION:
      return {blink::mojom::PermissionsPolicyFeature::kAccelerometer,
              blink::mojom::PermissionsPolicyFeature::kGyroscope,
              blink::mojom::PermissionsPolicyFeature::kMagnetometer};
    case SensorType::RELATIVE_ORIENTATION_EULER_ANGLES:
    case SensorType::RELATIVE_ORIENTATION_QUATERNION:
      return {blink::mojom::PermissionsPolicyFeature::kAccelerometer,
              blink::mojom::PermissionsPolicyFeature::kGyroscope};
  }
}

}  // namespace

FrameSensorProviderProxy::FrameSensorProviderProxy(
    RenderFrameHost* render_frame_host)
    : DocumentUserData<FrameSensorProviderProxy>(render_frame_host) {}

FrameSensorProviderProxy::~FrameSensorProviderProxy() = default;

void FrameSensorProviderProxy::Bind(
    mojo::PendingReceiver<blink::mojom::WebSensorProvider> receiver) {
  receiver_set_.Add(this, std::move(receiver));
}

void FrameSensorProviderProxy::OnMojoConnectionError() {
  receiver_set_.Clear();
}

void FrameSensorProviderProxy::GetSensor(device::mojom::SensorType type,
                                         GetSensorCallback callback) {
  const bool passes_permissions_policy_check = base::ranges::all_of(
      SensorTypeToPermissionsPolicyFeatures(type),
      [this](blink::mojom::PermissionsPolicyFeature feature) {
        return render_frame_host().IsFeatureEnabled(feature);
      });

  if (!passes_permissions_policy_check) {
    std::move(callback).Run(
        device::mojom::SensorCreationResult::ERROR_NOT_ALLOWED, nullptr);
    return;
  }

  render_frame_host()
      .GetBrowserContext()
      ->GetPermissionController()
      ->RequestPermissionFromCurrentDocument(
          &render_frame_host(),
          PermissionRequestDescription(blink::PermissionType::SENSORS),
          base::BindOnce(
              &FrameSensorProviderProxy::OnPermissionRequestCompleted,
              weak_factory_.GetWeakPtr(), type, std::move(callback)));
}

void FrameSensorProviderProxy::OnPermissionRequestCompleted(
    SensorType type,
    GetSensorCallback callback,
    blink::mojom::PermissionStatus status) {
  if (status != blink::mojom::PermissionStatus::GRANTED) {
    std::move(callback).Run(
        device::mojom::SensorCreationResult::ERROR_NOT_ALLOWED, nullptr);
    return;
  }

  // Unblock the orientation sensors as these are tested to play well with
  // back-forward cache. This is conservative.
  // TODO(crbug.com/40660549): Test and unblock all of the sensors to work with
  // back-forward cache.
  switch (type) {
    case SensorType::ABSOLUTE_ORIENTATION_EULER_ANGLES:
    case SensorType::ABSOLUTE_ORIENTATION_QUATERNION:
    case SensorType::RELATIVE_ORIENTATION_EULER_ANGLES:
    case SensorType::RELATIVE_ORIENTATION_QUATERNION:
      break;
    default:
      if (!base::FeatureList::IsEnabled(
              features::kAllowSensorsToEnterBfcache)) {
        static_cast<RenderFrameHostImpl*>(&render_frame_host())
            ->OnBackForwardCacheDisablingStickyFeatureUsed(
                blink::scheduler::WebSchedulerTrackedFeature::
                    kRequestedBackForwardCacheBlockedSensors);
      }
  }

  auto* web_contents_sensor_provider =
      WebContentsSensorProviderProxy::GetOrCreate(
          WebContents::FromRenderFrameHost(&render_frame_host()));
  if (!scoped_observation_.IsObserving()) {
    scoped_observation_.Observe(web_contents_sensor_provider);
  }
  web_contents_sensor_provider->GetSensor(type, std::move(callback));
}

DOCUMENT_USER_DATA_KEY_IMPL(FrameSensorProviderProxy);

}  // namespace content