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// Copyright 2015 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/presentation/presentation_request.h"
#include <memory>
#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/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/deprecation.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/loader/mixed_content_checker.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/modules/presentation/presentation_availability.h"
#include "third_party/blink/renderer/modules/presentation/presentation_availability_callbacks.h"
#include "third_party/blink/renderer/modules/presentation/presentation_availability_state.h"
#include "third_party/blink/renderer/modules/presentation/presentation_connection.h"
#include "third_party/blink/renderer/modules/presentation/presentation_connection_callbacks.h"
#include "third_party/blink/renderer/modules/presentation/presentation_controller.h"
#include "third_party/blink/renderer/modules/presentation/presentation_error.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
namespace blink {
namespace {
bool IsKnownProtocolForPresentationUrl(const KURL& url) {
return url.ProtocolIsInHTTPFamily() || url.ProtocolIs("cast") ||
url.ProtocolIs("cast-dial");
}
} // anonymous namespace
// static
PresentationRequest* PresentationRequest::Create(
ExecutionContext* execution_context,
const String& url,
ExceptionState& exception_state) {
Vector<String> urls(1);
urls[0] = url;
return Create(execution_context, urls, exception_state);
}
PresentationRequest* PresentationRequest::Create(
ExecutionContext* execution_context,
const Vector<String>& urls,
ExceptionState& exception_state) {
if (execution_context->IsSandboxed(
network::mojom::blink::WebSandboxFlags::kPresentationController)) {
exception_state.ThrowSecurityError(
"The document is sandboxed and lacks the 'allow-presentation' flag.");
return nullptr;
}
Vector<KURL> parsed_urls;
for (const auto& url : urls) {
const KURL& parsed_url = KURL(execution_context->Url(), url);
if (!parsed_url.IsValid()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kSyntaxError,
"'" + url + "' can't be resolved to a valid URL.");
return nullptr;
}
if (parsed_url.ProtocolIsInHTTPFamily() &&
MixedContentChecker::IsMixedContent(
execution_context->GetSecurityOrigin(), parsed_url)) {
exception_state.ThrowSecurityError(
"Presentation of an insecure document [" + url +
"] is prohibited from a secure context.");
return nullptr;
}
if (IsKnownProtocolForPresentationUrl(parsed_url))
parsed_urls.push_back(parsed_url);
}
if (parsed_urls.IsEmpty()) {
exception_state.ThrowDOMException(DOMExceptionCode::kNotSupportedError,
"Do not support empty sequence of URLs.");
return nullptr;
}
return MakeGarbageCollected<PresentationRequest>(execution_context,
parsed_urls);
}
const AtomicString& PresentationRequest::InterfaceName() const {
return event_target_names::kPresentationRequest;
}
ExecutionContext* PresentationRequest::GetExecutionContext() const {
return ExecutionContextClient::GetExecutionContext();
}
void PresentationRequest::AddedEventListener(
const AtomicString& event_type,
RegisteredEventListener& registered_listener) {
EventTargetWithInlineData::AddedEventListener(event_type,
registered_listener);
if (event_type == event_type_names::kConnectionavailable) {
UseCounter::Count(
GetExecutionContext(),
WebFeature::kPresentationRequestConnectionAvailableEventListener);
}
}
bool PresentationRequest::HasPendingActivity() const {
// Prevents garbage collecting of this object when not hold by another
// object but still has listeners registered.
if (!GetExecutionContext())
return false;
if (HasEventListeners())
return true;
return availability_property_ &&
availability_property_->GetState() ==
PresentationAvailabilityProperty::kPending;
}
ScriptPromise PresentationRequest::start(ScriptState* script_state,
ExceptionState& exception_state) {
if (!script_state->ContextIsValid()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"The PresentationRequest is no longer associated to a frame.");
return ScriptPromise();
}
LocalDOMWindow* window = LocalDOMWindow::From(script_state);
if (window->GetFrame()->GetSettings()->GetPresentationRequiresUserGesture() &&
!LocalFrame::HasTransientUserActivation(window->GetFrame())) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidAccessError,
"PresentationRequest::start() requires user gesture.");
return ScriptPromise();
}
PresentationController* controller = PresentationController::From(*window);
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
controller->GetPresentationService()->StartPresentation(
urls_,
WTF::Bind(
&PresentationConnectionCallbacks::HandlePresentationResponse,
std::make_unique<PresentationConnectionCallbacks>(resolver, this)));
return resolver->Promise();
}
ScriptPromise PresentationRequest::reconnect(ScriptState* script_state,
const String& id,
ExceptionState& exception_state) {
PresentationController* controller =
PresentationController::FromContext(GetExecutionContext());
if (!controller) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"The PresentationRequest is no longer associated to a frame.");
return ScriptPromise();
}
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ControllerPresentationConnection* existing_connection =
controller->FindExistingConnection(urls_, id);
if (existing_connection) {
controller->GetPresentationService()->ReconnectPresentation(
urls_, id,
WTF::Bind(&PresentationConnectionCallbacks::HandlePresentationResponse,
std::make_unique<PresentationConnectionCallbacks>(
resolver, existing_connection)));
} else {
controller->GetPresentationService()->ReconnectPresentation(
urls_, id,
WTF::Bind(
&PresentationConnectionCallbacks::HandlePresentationResponse,
std::make_unique<PresentationConnectionCallbacks>(resolver, this)));
}
return resolver->Promise();
}
ScriptPromise PresentationRequest::getAvailability(
ScriptState* script_state,
ExceptionState& exception_state) {
PresentationController* controller =
PresentationController::FromContext(GetExecutionContext());
if (!controller) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"The PresentationRequest is no longer associated to a frame.");
return ScriptPromise();
}
if (!availability_property_) {
availability_property_ =
MakeGarbageCollected<PresentationAvailabilityProperty>(
ExecutionContext::From(script_state));
controller->GetAvailabilityState()->RequestAvailability(
urls_, MakeGarbageCollected<PresentationAvailabilityCallbacks>(
availability_property_, urls_));
}
return availability_property_->Promise(script_state->World());
}
const Vector<KURL>& PresentationRequest::Urls() const {
return urls_;
}
void PresentationRequest::Trace(Visitor* visitor) {
visitor->Trace(availability_property_);
EventTargetWithInlineData::Trace(visitor);
ExecutionContextClient::Trace(visitor);
}
PresentationRequest::PresentationRequest(ExecutionContext* execution_context,
const Vector<KURL>& urls)
: ExecutionContextClient(execution_context), urls_(urls) {}
} // namespace blink
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