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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
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