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// Copyright 2024 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/permissions/system/system_permission_settings.h"
#include <memory>
#include "base/check_deref.h"
#include "base/notreached.h"
#include "base/scoped_observation.h"
#include "chrome/browser/permissions/system/geolocation_observation.h"
#include "chrome/browser/permissions/system/platform_handle.h"
#include "chrome/browser/permissions/system/system_media_source_win.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents.h"
#include "services/device/public/cpp/device_features.h"
#include "services/device/public/cpp/geolocation/geolocation_system_permission_manager.h"
#include "services/device/public/cpp/geolocation/location_system_permission_status.h"
static_assert(BUILDFLAG(IS_WIN));
namespace system_permission_settings {
namespace {
class PlatformHandleImpl : public PlatformHandle {
public:
// PlatformHandle:
bool CanPrompt(ContentSettingsType type) override {
switch (type) {
case ContentSettingsType::GEOLOCATION: {
if (base::FeatureList::IsEnabled(
features::kWinSystemLocationPermission)) {
return device::GeolocationSystemPermissionManager::GetInstance()
->GetSystemPermission() ==
device::LocationSystemPermissionStatus::kNotDetermined;
} else {
return false;
}
}
// crbug.com/414523295: while the status of camera/microphone can be
// determined, we currently don't support requesting them on Windows.
// Until this is fixed we will return `false`.
case ContentSettingsType::MEDIASTREAM_CAMERA:
case ContentSettingsType::MEDIASTREAM_MIC:
case ContentSettingsType::CAMERA_PAN_TILT_ZOOM:
return false;
default:
return false;
}
}
bool IsDenied(ContentSettingsType type) override {
switch (type) {
case ContentSettingsType::GEOLOCATION:
if (base::FeatureList::IsEnabled(
features::kWinSystemLocationPermission)) {
return device::GeolocationSystemPermissionManager::GetInstance()
->GetSystemPermission() ==
device::LocationSystemPermissionStatus::kDenied;
} else {
return false;
}
case ContentSettingsType::MEDIASTREAM_CAMERA:
case ContentSettingsType::MEDIASTREAM_MIC:
case ContentSettingsType::CAMERA_PAN_TILT_ZOOM:
return SystemMediaSourceWin::GetInstance().SystemPermissionStatus(
type) == SystemMediaSourceWin::Status::kDenied;
default:
return false;
}
}
bool IsAllowed(ContentSettingsType type) override {
switch (type) {
case ContentSettingsType::GEOLOCATION:
if (base::FeatureList::IsEnabled(
features::kWinSystemLocationPermission)) {
return device::GeolocationSystemPermissionManager::GetInstance()
->GetSystemPermission() ==
device::LocationSystemPermissionStatus::kAllowed;
} else {
return true;
}
case ContentSettingsType::MEDIASTREAM_CAMERA:
case ContentSettingsType::MEDIASTREAM_MIC:
case ContentSettingsType::CAMERA_PAN_TILT_ZOOM:
return SystemMediaSourceWin::GetInstance().SystemPermissionStatus(
type) == SystemMediaSourceWin::Status::kAllowed;
default:
return true;
}
}
void OpenSystemSettings(content::WebContents* web_contents,
ContentSettingsType type) override {
switch (type) {
case ContentSettingsType::GEOLOCATION: {
if (base::FeatureList::IsEnabled(
features::kWinSystemLocationPermission)) {
device::GeolocationSystemPermissionManager::GetInstance()
->OpenSystemPermissionSetting();
}
return;
}
case ContentSettingsType::MEDIASTREAM_MIC:
case ContentSettingsType::MEDIASTREAM_CAMERA:
case ContentSettingsType::CAMERA_PAN_TILT_ZOOM: {
SystemMediaSourceWin::GetInstance().OpenSystemPermissionSetting(type);
return;
}
default:
NOTREACHED();
}
}
void Request(ContentSettingsType type,
SystemPermissionResponseCallback callback) override {
switch (type) {
case ContentSettingsType::GEOLOCATION: {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (!base::FeatureList::IsEnabled(
features::kWinSystemLocationPermission)) {
return;
}
geolocation_callbacks_.push_back(std::move(callback));
// The system permission prompt is modal and requires a user decision
// (Allow or Deny) before it can be dismissed.
if (geolocation_callbacks_.size() == 1u) {
CHECK(!observation_);
// Lazily setup geolocation status observation
SystemPermissionChangedCallback clb = base::BindRepeating(
&PlatformHandleImpl::OnSystemPermissionUpdated,
weak_factory_.GetWeakPtr());
observation_ = Observe(std::move(clb));
CHECK_DEREF(device::GeolocationSystemPermissionManager::GetInstance())
.RequestSystemPermission();
}
return;
}
default:
std::move(callback).Run();
NOTREACHED();
}
}
std::unique_ptr<ScopedObservation> Observe(
SystemPermissionChangedCallback observer) override {
return std::make_unique<GeolocationObservation>(std::move(observer));
}
private:
void OnSystemPermissionUpdated(ContentSettingsType content_type,
bool /*is_blocked*/) {
CHECK(content_type == ContentSettingsType::GEOLOCATION);
// No further observation needed as all the current requests will now be
// resolved
observation_.reset();
FlushGeolocationCallbacks();
}
void FlushGeolocationCallbacks() {
auto callbacks = std::move(geolocation_callbacks_);
for (auto& cb : callbacks) {
std::move(cb).Run();
}
}
std::vector<SystemPermissionResponseCallback> geolocation_callbacks_;
std::unique_ptr<ScopedObservation> observation_;
base::WeakPtrFactory<PlatformHandleImpl> weak_factory_{this};
};
} // namespace
// static
std::unique_ptr<PlatformHandle> PlatformHandle::Create() {
return std::make_unique<PlatformHandleImpl>();
}
} // namespace system_permission_settings
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