gecko-dev/dom/presentation/Presentation.cpp

181 строка
4.8 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Presentation.h"
#include <ctype.h>
#include "mozilla/StaticPrefs_dom.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/PresentationBinding.h"
#include "mozilla/dom/PresentationRequest.h"
#include "mozilla/dom/Promise.h"
#include "nsContentUtils.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIDocShell.h"
#include "nsIScriptSecurityManager.h"
#include "nsJSUtils.h"
#include "nsNetUtil.h"
#include "nsPIDOMWindow.h"
#include "nsSandboxFlags.h"
#include "nsServiceManagerUtils.h"
#include "PresentationReceiver.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Presentation, mWindow, mDefaultRequest,
mReceiver)
NS_IMPL_CYCLE_COLLECTING_ADDREF(Presentation)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Presentation)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Presentation)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
/* static */
already_AddRefed<Presentation> Presentation::Create(
nsPIDOMWindowInner* aWindow) {
RefPtr<Presentation> presentation = new Presentation(aWindow);
return presentation.forget();
}
Presentation::Presentation(nsPIDOMWindowInner* aWindow) : mWindow(aWindow) {}
Presentation::~Presentation() = default;
/* virtual */
JSObject* Presentation::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return Presentation_Binding::Wrap(aCx, this, aGivenProto);
}
void Presentation::SetDefaultRequest(PresentationRequest* aRequest) {
if (nsContentUtils::ShouldResistFingerprinting()) {
return;
}
nsCOMPtr<Document> doc = mWindow ? mWindow->GetExtantDoc() : nullptr;
if (NS_WARN_IF(!doc)) {
return;
}
if (doc->GetSandboxFlags() & SANDBOXED_PRESENTATION) {
return;
}
mDefaultRequest = aRequest;
}
already_AddRefed<PresentationRequest> Presentation::GetDefaultRequest() const {
if (nsContentUtils::ShouldResistFingerprinting()) {
return nullptr;
}
RefPtr<PresentationRequest> request = mDefaultRequest;
return request.forget();
}
already_AddRefed<PresentationReceiver> Presentation::GetReceiver() {
if (nsContentUtils::ShouldResistFingerprinting()) {
return nullptr;
}
// return the same receiver if already created
if (mReceiver) {
RefPtr<PresentationReceiver> receiver = mReceiver;
return receiver.forget();
}
if (!HasReceiverSupport() || !IsInPresentedContent()) {
return nullptr;
}
mReceiver = PresentationReceiver::Create(mWindow);
if (NS_WARN_IF(!mReceiver)) {
MOZ_ASSERT(mReceiver);
return nullptr;
}
RefPtr<PresentationReceiver> receiver = mReceiver;
return receiver.forget();
}
void Presentation::SetStartSessionUnsettled(bool aIsUnsettled) {
mStartSessionUnsettled = aIsUnsettled;
}
bool Presentation::IsStartSessionUnsettled() const {
return mStartSessionUnsettled;
}
bool Presentation::HasReceiverSupport() const {
if (!mWindow) {
return false;
}
// Grant access to browser receiving pages and their same-origin iframes. (App
// pages should be controlled by "presentation" permission in app manifests.)
nsCOMPtr<nsIDocShell> docShell = mWindow->GetDocShell();
if (!docShell) {
return false;
}
if (!StaticPrefs::dom_presentation_testing_simulate_receiver() &&
!docShell->GetIsTopLevelContentDocShell()) {
return false;
}
nsAutoString presentationURL;
nsContentUtils::GetPresentationURL(docShell, presentationURL);
if (presentationURL.IsEmpty()) {
return false;
}
nsCOMPtr<nsIScriptSecurityManager> securityManager =
nsContentUtils::GetSecurityManager();
if (!securityManager) {
return false;
}
nsCOMPtr<nsIURI> presentationURI;
nsresult rv = NS_NewURI(getter_AddRefs(presentationURI), presentationURL);
if (NS_FAILED(rv)) {
return false;
}
bool isPrivateWin = false;
nsCOMPtr<Document> doc = mWindow->GetExtantDoc();
if (doc) {
isPrivateWin =
doc->NodePrincipal()->OriginAttributesRef().mPrivateBrowsingId > 0;
}
nsCOMPtr<nsIURI> docURI = mWindow->GetDocumentURI();
return NS_SUCCEEDED(securityManager->CheckSameOriginURI(
presentationURI, docURI, false, isPrivateWin));
}
bool Presentation::IsInPresentedContent() const {
if (!mWindow) {
return false;
}
nsCOMPtr<nsIDocShell> docShell = mWindow->GetDocShell();
MOZ_ASSERT(docShell);
nsAutoString presentationURL;
nsContentUtils::GetPresentationURL(docShell, presentationURL);
return !presentationURL.IsEmpty();
}
} // namespace dom
} // namespace mozilla