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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "StructuredCloneData.h"
#include "nsIDOMDOMException.h"
#include "nsIMutable.h"
#include "nsIXPConnect.h"
#include "ipc/IPCMessageUtils.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/BlobBinding.h"
#include "mozilla/dom/DOMTypes.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/ToJSValue.h"
#include "nsContentUtils.h"
#include "nsJSEnvironment.h"
#include "MainThreadUtils.h"
#include "StructuredCloneTags.h"
#include "jsapi.h"
namespace mozilla {
namespace dom {
namespace ipc {
bool
StructuredCloneData::Copy(const StructuredCloneData& aData)
{
if (!aData.mInitialized) {
return true;
}
if (aData.SharedData()) {
mSharedData = aData.SharedData();
} else {
mSharedData =
SharedJSAllocatedData::CreateFromExternalData(aData.Data());
NS_ENSURE_TRUE(mSharedData, false);
}
PortIdentifiers().AppendElements(aData.PortIdentifiers());
MOZ_ASSERT(BlobImpls().IsEmpty());
BlobImpls().AppendElements(aData.BlobImpls());
MOZ_ASSERT(GetSurfaces().IsEmpty());
MOZ_ASSERT(WasmModules().IsEmpty());
mInitialized = true;
return true;
}
void
StructuredCloneData::Read(JSContext* aCx,
JS::MutableHandle<JS::Value> aValue,
ErrorResult &aRv)
{
MOZ_ASSERT(mInitialized);
nsIGlobalObject *global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
MOZ_ASSERT(global);
ReadFromBuffer(global, aCx, Data(), aValue, aRv);
}
void
StructuredCloneData::Write(JSContext* aCx,
JS::Handle<JS::Value> aValue,
ErrorResult &aRv)
{
Write(aCx, aValue, JS::UndefinedHandleValue, aRv);
}
void
StructuredCloneData::Write(JSContext* aCx,
JS::Handle<JS::Value> aValue,
JS::Handle<JS::Value> aTransfer,
ErrorResult &aRv)
{
MOZ_ASSERT(!mInitialized);
StructuredCloneHolder::Write(aCx, aValue, aTransfer,
JS::CloneDataPolicy().denySharedArrayBuffer(), aRv);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
JSStructuredCloneData data(mBuffer->scope());
mBuffer->abandon();
mBuffer->steal(&data);
mBuffer = nullptr;
mSharedData = new SharedJSAllocatedData(Move(data));
mInitialized = true;
}
void
StructuredCloneData::WriteIPCParams(IPC::Message* aMsg) const
{
WriteParam(aMsg, Data());
}
bool
StructuredCloneData::ReadIPCParams(const IPC::Message* aMsg,
PickleIterator* aIter)
{
MOZ_ASSERT(!mInitialized);
JSStructuredCloneData data(JS::StructuredCloneScope::DifferentProcess);
if (!ReadParam(aMsg, aIter, &data)) {
return false;
}
mSharedData = new SharedJSAllocatedData(Move(data));
mInitialized = true;
return true;
}
bool
StructuredCloneData::CopyExternalData(const char* aData,
size_t aDataLength)
{
MOZ_ASSERT(!mInitialized);
mSharedData = SharedJSAllocatedData::CreateFromExternalData(aData,
aDataLength);
NS_ENSURE_TRUE(mSharedData, false);
mInitialized = true;
return true;
}
} // namespace ipc
} // namespace dom
} // namespace mozilla
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