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-rw-r--r--dom/serviceworkers/FetchEventOpProxyChild.cpp280
1 files changed, 280 insertions, 0 deletions
diff --git a/dom/serviceworkers/FetchEventOpProxyChild.cpp b/dom/serviceworkers/FetchEventOpProxyChild.cpp
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+++ b/dom/serviceworkers/FetchEventOpProxyChild.cpp
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+/* -*- 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 "FetchEventOpProxyChild.h"
+
+#include <utility>
+
+#include "mozilla/dom/FetchTypes.h"
+#include "mozilla/dom/ServiceWorkerOpPromise.h"
+#include "nsCOMPtr.h"
+#include "nsDebug.h"
+#include "nsThreadUtils.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+#include "mozilla/dom/InternalRequest.h"
+#include "mozilla/dom/InternalResponse.h"
+#include "mozilla/dom/RemoteWorkerChild.h"
+#include "mozilla/dom/RemoteWorkerService.h"
+#include "mozilla/dom/ServiceWorkerOp.h"
+#include "mozilla/dom/WorkerCommon.h"
+#include "mozilla/ipc/BackgroundChild.h"
+#include "mozilla/ipc/IPCStreamUtils.h"
+
+namespace mozilla {
+
+using namespace ipc;
+
+namespace dom {
+
+namespace {
+
+nsresult GetIPCSynthesizeResponseArgs(
+ ChildToParentSynthesizeResponseArgs* aIPCArgs,
+ SynthesizeResponseArgs&& aArgs) {
+ MOZ_ASSERT(RemoteWorkerService::Thread()->IsOnCurrentThread());
+
+ auto [internalResponse, closure, timeStamps] = std::move(aArgs);
+
+ aIPCArgs->closure() = std::move(closure);
+ aIPCArgs->timeStamps() = std::move(timeStamps);
+
+ PBackgroundChild* bgChild = BackgroundChild::GetOrCreateForCurrentThread();
+
+ if (NS_WARN_IF(!bgChild)) {
+ return NS_ERROR_DOM_INVALID_STATE_ERR;
+ }
+
+ internalResponse->ToChildToParentInternalResponse(
+ &aIPCArgs->internalResponse(), bgChild);
+ return NS_OK;
+}
+
+} // anonymous namespace
+
+void FetchEventOpProxyChild::Initialize(
+ const ParentToChildServiceWorkerFetchEventOpArgs& aArgs) {
+ MOZ_ASSERT(RemoteWorkerService::Thread()->IsOnCurrentThread());
+ MOZ_ASSERT(!mOp);
+
+ mInternalRequest =
+ MakeSafeRefPtr<InternalRequest>(aArgs.common().internalRequest());
+
+ if (aArgs.common().preloadNavigation()) {
+ // We use synchronous task dispatch here to make sure that if the preload
+ // response arrived before we dispatch the fetch event, then the JS preload
+ // response promise will get resolved immediately.
+ mPreloadResponseAvailablePromise =
+ MakeRefPtr<FetchEventPreloadResponseAvailablePromise::Private>(
+ __func__);
+ mPreloadResponseAvailablePromise->UseSynchronousTaskDispatch(__func__);
+ if (aArgs.preloadResponse().isSome()) {
+ mPreloadResponseAvailablePromise->Resolve(
+ InternalResponse::FromIPC(aArgs.preloadResponse().ref()), __func__);
+ }
+
+ mPreloadResponseTimingPromise =
+ MakeRefPtr<FetchEventPreloadResponseTimingPromise::Private>(__func__);
+ mPreloadResponseTimingPromise->UseSynchronousTaskDispatch(__func__);
+ if (aArgs.preloadResponseTiming().isSome()) {
+ mPreloadResponseTimingPromise->Resolve(
+ aArgs.preloadResponseTiming().ref(), __func__);
+ }
+
+ mPreloadResponseEndPromise =
+ MakeRefPtr<FetchEventPreloadResponseEndPromise::Private>(__func__);
+ mPreloadResponseEndPromise->UseSynchronousTaskDispatch(__func__);
+ if (aArgs.preloadResponseEndArgs().isSome()) {
+ mPreloadResponseEndPromise->Resolve(aArgs.preloadResponseEndArgs().ref(),
+ __func__);
+ }
+ }
+
+ RemoteWorkerChild* manager = static_cast<RemoteWorkerChild*>(Manager());
+ MOZ_ASSERT(manager);
+
+ RefPtr<FetchEventOpProxyChild> self = this;
+
+ auto callback = [self](const ServiceWorkerOpResult& aResult) {
+ // FetchEventOp could finish before NavigationPreload fetch finishes.
+ // If NavigationPreload is available in FetchEvent, caching FetchEventOp
+ // result until RecvPreloadResponseEnd is called, such that the preload
+ // response could be completed.
+ if (self->mPreloadResponseEndPromise &&
+ !self->mPreloadResponseEndPromise->IsResolved() &&
+ self->mPreloadResponseAvailablePromise->IsResolved()) {
+ self->mCachedOpResult = Some(aResult);
+ return;
+ }
+ if (!self->CanSend()) {
+ return;
+ }
+
+ if (NS_WARN_IF(aResult.type() == ServiceWorkerOpResult::Tnsresult)) {
+ Unused << self->Send__delete__(self, aResult.get_nsresult());
+ return;
+ }
+
+ MOZ_ASSERT(aResult.type() ==
+ ServiceWorkerOpResult::TServiceWorkerFetchEventOpResult);
+
+ Unused << self->Send__delete__(self, aResult);
+ };
+
+ RefPtr<FetchEventOp> op = ServiceWorkerOp::Create(aArgs, std::move(callback))
+ .template downcast<FetchEventOp>();
+
+ MOZ_ASSERT(op);
+
+ op->SetActor(this);
+ mOp = op;
+
+ op->GetRespondWithPromise()
+ ->Then(GetCurrentSerialEventTarget(), __func__,
+ [self = std::move(self)](
+ FetchEventRespondWithPromise::ResolveOrRejectValue&& aResult) {
+ self->mRespondWithPromiseRequestHolder.Complete();
+
+ if (NS_WARN_IF(aResult.IsReject())) {
+ MOZ_ASSERT(NS_FAILED(aResult.RejectValue().status()));
+
+ Unused << self->SendRespondWith(aResult.RejectValue());
+ return;
+ }
+
+ auto& result = aResult.ResolveValue();
+
+ if (result.is<SynthesizeResponseArgs>()) {
+ ChildToParentSynthesizeResponseArgs ipcArgs;
+ nsresult rv = GetIPCSynthesizeResponseArgs(
+ &ipcArgs, result.extract<SynthesizeResponseArgs>());
+
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ Unused << self->SendRespondWith(
+ CancelInterceptionArgs(rv, ipcArgs.timeStamps()));
+ return;
+ }
+
+ Unused << self->SendRespondWith(ipcArgs);
+ } else if (result.is<ResetInterceptionArgs>()) {
+ Unused << self->SendRespondWith(
+ result.extract<ResetInterceptionArgs>());
+ } else {
+ Unused << self->SendRespondWith(
+ result.extract<CancelInterceptionArgs>());
+ }
+ })
+ ->Track(mRespondWithPromiseRequestHolder);
+
+ manager->MaybeStartOp(std::move(op));
+}
+
+SafeRefPtr<InternalRequest> FetchEventOpProxyChild::ExtractInternalRequest() {
+ MOZ_ASSERT(IsCurrentThreadRunningWorker());
+ MOZ_ASSERT(mInternalRequest);
+
+ return std::move(mInternalRequest);
+}
+
+RefPtr<FetchEventPreloadResponseAvailablePromise>
+FetchEventOpProxyChild::GetPreloadResponseAvailablePromise() {
+ return mPreloadResponseAvailablePromise;
+}
+
+RefPtr<FetchEventPreloadResponseTimingPromise>
+FetchEventOpProxyChild::GetPreloadResponseTimingPromise() {
+ return mPreloadResponseTimingPromise;
+}
+
+RefPtr<FetchEventPreloadResponseEndPromise>
+FetchEventOpProxyChild::GetPreloadResponseEndPromise() {
+ return mPreloadResponseEndPromise;
+}
+
+mozilla::ipc::IPCResult FetchEventOpProxyChild::RecvPreloadResponse(
+ ParentToChildInternalResponse&& aResponse) {
+ // Receiving this message implies that navigation preload is enabled, so
+ // Initialize() should have created this promise.
+ MOZ_ASSERT(mPreloadResponseAvailablePromise);
+
+ mPreloadResponseAvailablePromise->Resolve(
+ InternalResponse::FromIPC(aResponse), __func__);
+
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult FetchEventOpProxyChild::RecvPreloadResponseTiming(
+ ResponseTiming&& aTiming) {
+ // Receiving this message implies that navigation preload is enabled, so
+ // Initialize() should have created this promise.
+ MOZ_ASSERT(mPreloadResponseTimingPromise);
+
+ mPreloadResponseTimingPromise->Resolve(std::move(aTiming), __func__);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult FetchEventOpProxyChild::RecvPreloadResponseEnd(
+ ResponseEndArgs&& aArgs) {
+ // Receiving this message implies that navigation preload is enabled, so
+ // Initialize() should have created this promise.
+ MOZ_ASSERT(mPreloadResponseEndPromise);
+
+ mPreloadResponseEndPromise->Resolve(std::move(aArgs), __func__);
+ // If mCachedOpResult is not nothing, it means FetchEventOp had already done
+ // and the operation result is cached. Continue closing IPC here.
+ if (mCachedOpResult.isNothing()) {
+ return IPC_OK();
+ }
+
+ if (!CanSend()) {
+ return IPC_OK();
+ }
+
+ if (NS_WARN_IF(mCachedOpResult.ref().type() ==
+ ServiceWorkerOpResult::Tnsresult)) {
+ Unused << Send__delete__(this, mCachedOpResult.ref().get_nsresult());
+ return IPC_OK();
+ }
+
+ MOZ_ASSERT(mCachedOpResult.ref().type() ==
+ ServiceWorkerOpResult::TServiceWorkerFetchEventOpResult);
+
+ Unused << Send__delete__(this, mCachedOpResult.ref());
+
+ return IPC_OK();
+}
+
+void FetchEventOpProxyChild::ActorDestroy(ActorDestroyReason) {
+ Unused << NS_WARN_IF(mRespondWithPromiseRequestHolder.Exists());
+ mRespondWithPromiseRequestHolder.DisconnectIfExists();
+
+ // If mPreloadResponseAvailablePromise exists, navigation preloading response
+ // will not be valid anymore since it is too late to respond to the
+ // FetchEvent. Resolve the preload response promise with
+ // NS_ERROR_DOM_ABORT_ERR.
+ if (mPreloadResponseAvailablePromise) {
+ mPreloadResponseAvailablePromise->Resolve(
+ InternalResponse::NetworkError(NS_ERROR_DOM_ABORT_ERR), __func__);
+ }
+
+ if (mPreloadResponseTimingPromise) {
+ mPreloadResponseTimingPromise->Resolve(ResponseTiming(), __func__);
+ }
+
+ if (mPreloadResponseEndPromise) {
+ ResponseEndArgs args(FetchDriverObserver::eAborted);
+ mPreloadResponseEndPromise->Resolve(args, __func__);
+ }
+
+ mOp->RevokeActor(this);
+ mOp = nullptr;
+}
+
+} // namespace dom
+} // namespace mozilla
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