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-rw-r--r--dom/serviceworkers/FetchEventOpProxyParent.cpp229
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diff --git a/dom/serviceworkers/FetchEventOpProxyParent.cpp b/dom/serviceworkers/FetchEventOpProxyParent.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 "FetchEventOpProxyParent.h"
+
+#include <utility>
+
+#include "mozilla/dom/FetchTypes.h"
+#include "mozilla/dom/ServiceWorkerOpArgs.h"
+#include "nsCOMPtr.h"
+#include "nsIInputStream.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/ResultExtensions.h"
+#include "mozilla/Try.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+#include "mozilla/dom/InternalResponse.h"
+#include "mozilla/dom/PRemoteWorkerParent.h"
+#include "mozilla/dom/PRemoteWorkerControllerParent.h"
+#include "mozilla/dom/FetchEventOpParent.h"
+#include "mozilla/ipc/BackgroundParent.h"
+#include "mozilla/ipc/IPCStreamUtils.h"
+#include "mozilla/RemoteLazyInputStreamStorage.h"
+
+namespace mozilla {
+
+using namespace ipc;
+
+namespace dom {
+
+namespace {
+
+nsresult MaybeDeserializeAndWrapForMainThread(
+ const Maybe<ChildToParentStream>& aSource, int64_t aBodyStreamSize,
+ Maybe<ParentToParentStream>& aSink, PBackgroundParent* aManager) {
+ if (aSource.isNothing()) {
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsIInputStream> deserialized =
+ DeserializeIPCStream(aSource->stream());
+
+ aSink = Some(ParentToParentStream());
+ auto& uuid = aSink->uuid();
+
+ MOZ_TRY(nsID::GenerateUUIDInPlace(uuid));
+
+ auto storageOrErr = RemoteLazyInputStreamStorage::Get();
+
+ if (NS_WARN_IF(storageOrErr.isErr())) {
+ return storageOrErr.unwrapErr();
+ }
+
+ auto storage = storageOrErr.unwrap();
+ storage->AddStream(deserialized, uuid);
+ return NS_OK;
+}
+
+ParentToParentInternalResponse ToParentToParent(
+ const ChildToParentInternalResponse& aResponse,
+ NotNull<PBackgroundParent*> aBackgroundParent) {
+ ParentToParentInternalResponse parentToParentResponse(
+ aResponse.metadata(), Nothing(), aResponse.bodySize(), Nothing());
+
+ MOZ_ALWAYS_SUCCEEDS(MaybeDeserializeAndWrapForMainThread(
+ aResponse.body(), aResponse.bodySize(), parentToParentResponse.body(),
+ aBackgroundParent));
+ MOZ_ALWAYS_SUCCEEDS(MaybeDeserializeAndWrapForMainThread(
+ aResponse.alternativeBody(), InternalResponse::UNKNOWN_BODY_SIZE,
+ parentToParentResponse.alternativeBody(), aBackgroundParent));
+
+ return parentToParentResponse;
+}
+
+ParentToParentSynthesizeResponseArgs ToParentToParent(
+ const ChildToParentSynthesizeResponseArgs& aArgs,
+ NotNull<PBackgroundParent*> aBackgroundParent) {
+ return ParentToParentSynthesizeResponseArgs(
+ ToParentToParent(aArgs.internalResponse(), aBackgroundParent),
+ aArgs.closure(), aArgs.timeStamps());
+}
+
+ParentToParentFetchEventRespondWithResult ToParentToParent(
+ const ChildToParentFetchEventRespondWithResult& aResult,
+ NotNull<PBackgroundParent*> aBackgroundParent) {
+ switch (aResult.type()) {
+ case ChildToParentFetchEventRespondWithResult::
+ TChildToParentSynthesizeResponseArgs:
+ return ToParentToParent(aResult.get_ChildToParentSynthesizeResponseArgs(),
+ aBackgroundParent);
+
+ case ChildToParentFetchEventRespondWithResult::TResetInterceptionArgs:
+ return aResult.get_ResetInterceptionArgs();
+
+ case ChildToParentFetchEventRespondWithResult::TCancelInterceptionArgs:
+ return aResult.get_CancelInterceptionArgs();
+
+ default:
+ MOZ_CRASH("Invalid ParentToParentFetchEventRespondWithResult");
+ }
+}
+
+} // anonymous namespace
+
+/* static */ void FetchEventOpProxyParent::Create(
+ PRemoteWorkerParent* aManager,
+ RefPtr<ServiceWorkerFetchEventOpPromise::Private>&& aPromise,
+ const ParentToParentServiceWorkerFetchEventOpArgs& aArgs,
+ RefPtr<FetchEventOpParent> aReal, nsCOMPtr<nsIInputStream> aBodyStream) {
+ AssertIsInMainProcess();
+ AssertIsOnBackgroundThread();
+ MOZ_ASSERT(aManager);
+ MOZ_ASSERT(aReal);
+
+ ParentToChildServiceWorkerFetchEventOpArgs copyArgs(aArgs.common(), Nothing(),
+ Nothing(), Nothing());
+ if (aArgs.preloadResponse().isSome()) {
+ // Convert the preload response to ParentToChildInternalResponse.
+ copyArgs.preloadResponse() = Some(ToParentToChild(
+ aArgs.preloadResponse().ref(), WrapNotNull(aManager->Manager())));
+ }
+
+ if (aArgs.preloadResponseTiming().isSome()) {
+ copyArgs.preloadResponseTiming() = aArgs.preloadResponseTiming();
+ }
+
+ if (aArgs.preloadResponseEndArgs().isSome()) {
+ copyArgs.preloadResponseEndArgs() = aArgs.preloadResponseEndArgs();
+ }
+
+ RefPtr<FetchEventOpProxyParent> actor =
+ new FetchEventOpProxyParent(std::move(aReal), std::move(aPromise));
+
+ // As long as the fetch event was pending, the FetchEventOpParent was
+ // responsible for keeping the preload response, if it already arrived. Once
+ // the fetch event starts it gives up the preload response (if any) and we
+ // need to add it to the arguments. Note that we have to make sure that the
+ // arguments don't contain the preload response already, otherwise we'll end
+ // up overwriting it with a Nothing.
+ auto [preloadResponse, preloadResponseEndArgs] =
+ actor->mReal->OnStart(WrapNotNull(actor));
+ if (copyArgs.preloadResponse().isNothing() && preloadResponse.isSome()) {
+ copyArgs.preloadResponse() = Some(ToParentToChild(
+ preloadResponse.ref(), WrapNotNull(aManager->Manager())));
+ }
+ if (copyArgs.preloadResponseEndArgs().isNothing() &&
+ preloadResponseEndArgs.isSome()) {
+ copyArgs.preloadResponseEndArgs() = preloadResponseEndArgs;
+ }
+
+ IPCInternalRequest& copyRequest = copyArgs.common().internalRequest();
+
+ if (aBodyStream) {
+ copyRequest.body() = Some(ParentToChildStream());
+
+ RefPtr<RemoteLazyInputStream> stream =
+ RemoteLazyInputStream::WrapStream(aBodyStream);
+ MOZ_DIAGNOSTIC_ASSERT(stream);
+
+ copyRequest.body().ref().get_ParentToChildStream() = stream;
+ }
+
+ Unused << aManager->SendPFetchEventOpProxyConstructor(actor, copyArgs);
+}
+
+FetchEventOpProxyParent::~FetchEventOpProxyParent() {
+ AssertIsOnBackgroundThread();
+}
+
+FetchEventOpProxyParent::FetchEventOpProxyParent(
+ RefPtr<FetchEventOpParent>&& aReal,
+ RefPtr<ServiceWorkerFetchEventOpPromise::Private>&& aPromise)
+ : mReal(std::move(aReal)), mLifetimePromise(std::move(aPromise)) {}
+
+mozilla::ipc::IPCResult FetchEventOpProxyParent::RecvAsyncLog(
+ const nsCString& aScriptSpec, const uint32_t& aLineNumber,
+ const uint32_t& aColumnNumber, const nsCString& aMessageName,
+ nsTArray<nsString>&& aParams) {
+ AssertIsOnBackgroundThread();
+ MOZ_ASSERT(mReal);
+
+ Unused << mReal->SendAsyncLog(aScriptSpec, aLineNumber, aColumnNumber,
+ aMessageName, aParams);
+
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult FetchEventOpProxyParent::RecvRespondWith(
+ const ChildToParentFetchEventRespondWithResult& aResult) {
+ AssertIsOnBackgroundThread();
+ MOZ_ASSERT(mReal);
+
+ auto manager = WrapNotNull(mReal->Manager());
+ auto backgroundParent = WrapNotNull(manager->Manager());
+ Unused << mReal->SendRespondWith(ToParentToParent(aResult, backgroundParent));
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult FetchEventOpProxyParent::Recv__delete__(
+ const ServiceWorkerFetchEventOpResult& aResult) {
+ AssertIsOnBackgroundThread();
+ MOZ_ASSERT(mLifetimePromise);
+ MOZ_ASSERT(mReal);
+ mReal->OnFinish();
+ if (mLifetimePromise) {
+ mLifetimePromise->Resolve(aResult, __func__);
+ mLifetimePromise = nullptr;
+ mReal = nullptr;
+ }
+
+ return IPC_OK();
+}
+
+void FetchEventOpProxyParent::ActorDestroy(ActorDestroyReason) {
+ AssertIsOnBackgroundThread();
+ if (mLifetimePromise) {
+ mLifetimePromise->Reject(NS_ERROR_DOM_ABORT_ERR, __func__);
+ mLifetimePromise = nullptr;
+ mReal = nullptr;
+ }
+}
+
+} // namespace dom
+} // namespace mozilla