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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_device.h"
#include <memory>
#include <utility>
#include "third_party/blink/renderer/bindings/core/v8/callback_promise_adapter.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_throw_dom_exception.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_watch_advertisements_options.h"
#include "third_party/blink/renderer/core/dom/abort_signal.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/dom/events/event.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_attribute_instance_map.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_error.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_remote_gatt_server.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
namespace blink {
const char kAbortErrorMessage[] = "The Bluetooth operation was cancelled.";
const char kInactiveDocumentError2[] = "Document not active";
const char kInvalidStateErrorMessage[] =
"Pending watch advertisements operation.";
BluetoothDevice::BluetoothDevice(ExecutionContext* context,
mojom::blink::WebBluetoothDevicePtr device,
Bluetooth* bluetooth)
: ExecutionContextClient(context),
attribute_instance_map_(
MakeGarbageCollected<BluetoothAttributeInstanceMap>(this)),
device_(std::move(device)),
gatt_(MakeGarbageCollected<BluetoothRemoteGATTServer>(context, this)),
bluetooth_(bluetooth),
client_receiver_(this, context) {}
BluetoothRemoteGATTService* BluetoothDevice::GetOrCreateRemoteGATTService(
mojom::blink::WebBluetoothRemoteGATTServicePtr service,
bool is_primary,
const String& device_instance_id) {
return attribute_instance_map_->GetOrCreateRemoteGATTService(
std::move(service), is_primary, device_instance_id);
}
bool BluetoothDevice::IsValidService(const String& service_instance_id) {
return attribute_instance_map_->ContainsService(service_instance_id);
}
BluetoothRemoteGATTCharacteristic*
BluetoothDevice::GetOrCreateRemoteGATTCharacteristic(
ExecutionContext* context,
mojom::blink::WebBluetoothRemoteGATTCharacteristicPtr characteristic,
BluetoothRemoteGATTService* service) {
return attribute_instance_map_->GetOrCreateRemoteGATTCharacteristic(
context, std::move(characteristic), service);
}
bool BluetoothDevice::IsValidCharacteristic(
const String& characteristic_instance_id) {
return attribute_instance_map_->ContainsCharacteristic(
characteristic_instance_id);
}
BluetoothRemoteGATTDescriptor*
BluetoothDevice::GetOrCreateBluetoothRemoteGATTDescriptor(
mojom::blink::WebBluetoothRemoteGATTDescriptorPtr descriptor,
BluetoothRemoteGATTCharacteristic* characteristic) {
return attribute_instance_map_->GetOrCreateBluetoothRemoteGATTDescriptor(
std::move(descriptor), characteristic);
}
bool BluetoothDevice::IsValidDescriptor(const String& descriptor_instance_id) {
return attribute_instance_map_->ContainsDescriptor(descriptor_instance_id);
}
void BluetoothDevice::ClearAttributeInstanceMapAndFireEvent() {
attribute_instance_map_->Clear();
DispatchEvent(
*Event::CreateBubble(event_type_names::kGattserverdisconnected));
}
const WTF::AtomicString& BluetoothDevice::InterfaceName() const {
return event_target_names::kBluetoothDevice;
}
ExecutionContext* BluetoothDevice::GetExecutionContext() const {
return ExecutionContextClient::GetExecutionContext();
}
void BluetoothDevice::Trace(Visitor* visitor) const {
visitor->Trace(attribute_instance_map_);
visitor->Trace(gatt_);
visitor->Trace(bluetooth_);
visitor->Trace(watch_advertisements_resolver_);
visitor->Trace(client_receiver_);
EventTargetWithInlineData::Trace(visitor);
ExecutionContextClient::Trace(visitor);
}
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothdevice-watchadvertisements
ScriptPromise BluetoothDevice::watchAdvertisements(
ScriptState* script_state,
const WatchAdvertisementsOptions* options,
ExceptionState& exception_state) {
ExecutionContext* context = GetExecutionContext();
if (!context) {
exception_state.ThrowTypeError(kInactiveDocumentError2);
return ScriptPromise();
}
CHECK(context->IsSecureContext());
// 1. If options.signal is present, perform the following sub-steps:
if (options->hasSignal()) {
// 1.1. If options.signal’s aborted flag is set, then abort
// watchAdvertisements with this and abort these steps.
if (options->signal()->aborted()) {
AbortWatchAdvertisements();
exception_state.ThrowDOMException(DOMExceptionCode::kAbortError,
kAbortErrorMessage);
return ScriptPromise();
}
// 1.2. Add the following abort steps to options.signal:
// 1.2.1. Abort watchAdvertisements with this.
// 1.2.2. Reject promise with AbortError.
options->signal()->AddAlgorithm(WTF::Bind(
&BluetoothDevice::AbortWatchAdvertisements, WrapPersistent(this)));
}
// 2. If this.[[watchAdvertisementsState]] is 'pending-watch':
if (client_receiver_.is_bound() && watch_advertisements_resolver_) {
// 'pending-watch' 2.1. Reject promise with InvalidStateError.
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
kInvalidStateErrorMessage);
return ScriptPromise();
}
// 2. If this.[[watchAdvertisementsState]] is 'watching':
// 'watching' 2.1. Resolve promise with undefined.
if (client_receiver_.is_bound() && !watch_advertisements_resolver_)
return ScriptPromise::CastUndefined(script_state);
// 2. If this.[[watchAdvertisementsState]] is 'not-watching':
DCHECK(!client_receiver_.is_bound());
// 'not-watching' 2.1. Set this.[[watchAdvertisementsState]] to
// 'pending-watch'.
watch_advertisements_resolver_ =
MakeGarbageCollected<ScriptPromiseResolver>(script_state);
mojo::PendingAssociatedRemote<mojom::blink::WebBluetoothAdvertisementClient>
client;
client_receiver_.Bind(client.InitWithNewEndpointAndPassReceiver(),
context->GetTaskRunner(TaskType::kMiscPlatformAPI));
// 'not-watching' 2.2.1. Ensure that the UA is scanning for this device’s
// advertisements. The UA SHOULD NOT filter out "duplicate" advertisements for
// the same device.
bluetooth_->Service()->WatchAdvertisementsForDevice(
device_->id, std::move(client),
WTF::Bind(&BluetoothDevice::WatchAdvertisementsCallback,
WrapPersistent(this)));
return watch_advertisements_resolver_->Promise();
}
// https://webbluetoothcg.github.io/web-bluetooth/#abort-watchadvertisements
void BluetoothDevice::AbortWatchAdvertisements() {
// 1. Set this.[[watchAdvertisementsState]] to 'not-watching'.
// 2. Set device.watchingAdvertisements to false.
// 3.1. If no more BluetoothDevices in the whole UA have
// watchingAdvertisements set to true, the UA SHOULD stop scanning for
// advertisements. Otherwise, if no more BluetoothDevices representing the
// same device as this have watchingAdvertisements set to true, the UA SHOULD
// reconfigure the scan to avoid receiving reports for this device.
client_receiver_.reset();
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothdevice-watchadvertisements
// 1.2.2. Reject promise with AbortError
if (watch_advertisements_resolver_) {
auto* script_state = watch_advertisements_resolver_->GetScriptState();
watch_advertisements_resolver_->Reject(V8ThrowDOMException::CreateOrEmpty(
script_state->GetIsolate(), DOMExceptionCode::kAbortError,
kAbortErrorMessage));
watch_advertisements_resolver_.Clear();
}
}
void BluetoothDevice::AdvertisingEvent(
mojom::blink::WebBluetoothAdvertisingEventPtr advertising_event) {
auto* event = MakeGarbageCollected<BluetoothAdvertisingEvent>(
event_type_names::kAdvertisementreceived, this,
std::move(advertising_event));
DispatchEvent(*event);
}
bool BluetoothDevice::HasPendingActivity() const {
return GetExecutionContext() && HasEventListeners();
}
void BluetoothDevice::AddedEventListener(
const AtomicString& event_type,
RegisteredEventListener& registered_listener) {
EventTargetWithInlineData::AddedEventListener(event_type,
registered_listener);
if (event_type == event_type_names::kGattserverdisconnected) {
UseCounter::Count(GetExecutionContext(),
WebFeature::kGATTServerDisconnectedEvent);
}
}
void BluetoothDevice::WatchAdvertisementsCallback(
mojom::blink::WebBluetoothResult result) {
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothdevice-watchadvertisements
// 2.2.3. Queue a task to perform the following steps, but abort when
// this.[[watchAdvertisementsState]] becomes not-watching:
if (!watch_advertisements_resolver_)
return;
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothdevice-watchadvertisements
// 2.2.2. If the UA fails to enable scanning, queue a task to perform the
// following steps, and abort these steps:
if (result != mojom::blink::WebBluetoothResult::SUCCESS) {
// 2.2.2.1. Set this.[[watchAdvertisementsState]] to 'not-watching'.
client_receiver_.reset();
// 2.2.2.2. Reject promise with one of the following errors:
watch_advertisements_resolver_->Reject(
BluetoothError::CreateDOMException(result));
watch_advertisements_resolver_.Clear();
return;
}
// 2.2.3.3. Resolve promise with undefined.
watch_advertisements_resolver_->Resolve();
watch_advertisements_resolver_.Clear();
}
} // namespace blink
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