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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 "RemoteLazyInputStreamUtils.h"
#include "RemoteLazyInputStream.h"
#include "RemoteLazyInputStreamChild.h"
#include "RemoteLazyInputStreamParent.h"
#include "mozilla/ipc/BackgroundParent.h"
#include "mozilla/ipc/PBackgroundParent.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/ipc/IPCStreamUtils.h"
#include "RemoteLazyInputStreamStorage.h"
#include "StreamBlobImpl.h"
namespace mozilla {
namespace {
template <typename M>
nsresult SerializeInputStreamParent(nsIInputStream* aInputStream,
uint64_t aSize, uint64_t aChildID,
PRemoteLazyInputStreamParent*& aActorParent,
M* aManager) {
// Parent to Child we always send a RemoteLazyInputStream.
MOZ_ASSERT(XRE_IsParentProcess());
nsCOMPtr<nsIInputStream> stream = aInputStream;
// In case this is a RemoteLazyInputStream, we don't want to create a loop:
// RemoteLazyInputStreamParent -> RemoteLazyInputStream ->
// RemoteLazyInputStreamParent. Let's use the underlying inputStream instead.
nsCOMPtr<mozIRemoteLazyInputStream> remoteLazyInputStream =
do_QueryInterface(aInputStream);
if (remoteLazyInputStream) {
stream = remoteLazyInputStream->GetInternalStream();
// If we don't have an underlying stream, it's better to terminate here
// instead of sending an 'empty' RemoteLazyInputStream actor on the other
// side, unable to be used.
if (NS_WARN_IF(!stream)) {
return NS_ERROR_FAILURE;
}
}
nsresult rv;
RefPtr<RemoteLazyInputStreamParent> parentActor =
RemoteLazyInputStreamParent::Create(stream, aSize, aChildID, &rv,
aManager);
if (!parentActor) {
return rv;
}
if (!aManager->SendPRemoteLazyInputStreamConstructor(
parentActor, parentActor->ID(), parentActor->Size())) {
return NS_ERROR_FAILURE;
}
aActorParent = parentActor;
return NS_OK;
}
} // anonymous namespace
// static
nsresult RemoteLazyInputStreamUtils::SerializeInputStream(
nsIInputStream* aInputStream, uint64_t aSize, RemoteLazyStream& aOutStream,
dom::ContentParent* aManager) {
PRemoteLazyInputStreamParent* actor = nullptr;
nsresult rv = SerializeInputStreamParent(
aInputStream, aSize, aManager->ChildID(), actor, aManager);
NS_ENSURE_SUCCESS(rv, rv);
aOutStream = actor;
return NS_OK;
}
// static
nsresult RemoteLazyInputStreamUtils::SerializeInputStream(
nsIInputStream* aInputStream, uint64_t aSize, RemoteLazyStream& aOutStream,
mozilla::ipc::PBackgroundParent* aManager) {
PRemoteLazyInputStreamParent* actor = nullptr;
nsresult rv = SerializeInputStreamParent(
aInputStream, aSize, mozilla::ipc::BackgroundParent::GetChildID(aManager),
actor, aManager);
NS_ENSURE_SUCCESS(rv, rv);
aOutStream = actor;
return NS_OK;
}
// static
nsresult RemoteLazyInputStreamUtils::SerializeInputStream(
nsIInputStream* aInputStream, uint64_t aSize, RemoteLazyStream& aOutStream,
dom::ContentChild* aManager) {
mozilla::ipc::AutoIPCStream ipcStream(true /* delayed start */);
if (!ipcStream.Serialize(aInputStream, aManager)) {
return NS_ERROR_FAILURE;
}
aOutStream = ipcStream.TakeValue();
return NS_OK;
}
// static
nsresult RemoteLazyInputStreamUtils::SerializeInputStream(
nsIInputStream* aInputStream, uint64_t aSize, RemoteLazyStream& aOutStream,
mozilla::ipc::PBackgroundChild* aManager) {
mozilla::ipc::AutoIPCStream ipcStream(true /* delayed start */);
if (!ipcStream.Serialize(aInputStream, aManager)) {
return NS_ERROR_FAILURE;
}
aOutStream = ipcStream.TakeValue();
return NS_OK;
}
} // namespace mozilla
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