139 lines
3.5 KiB
C++
139 lines
3.5 KiB
C++
/* -*- 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 "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/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.Data()) {
|
|
return true;
|
|
}
|
|
|
|
if (aData.SharedData()) {
|
|
mSharedData = aData.SharedData();
|
|
} else {
|
|
mSharedData =
|
|
SharedJSAllocatedData::CreateFromExternalData(aData.Data(),
|
|
aData.DataLength());
|
|
NS_ENSURE_TRUE(mSharedData, false);
|
|
}
|
|
|
|
MOZ_ASSERT(BlobImpls().IsEmpty());
|
|
BlobImpls().AppendElements(aData.BlobImpls());
|
|
|
|
MOZ_ASSERT(GetImages().IsEmpty());
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
StructuredCloneData::Read(JSContext* aCx,
|
|
JS::MutableHandle<JS::Value> aValue,
|
|
ErrorResult &aRv)
|
|
{
|
|
MOZ_ASSERT(Data());
|
|
|
|
nsIGlobalObject *global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
|
|
MOZ_ASSERT(global);
|
|
|
|
ReadFromBuffer(global, aCx, Data(), DataLength(), aValue, aRv);
|
|
}
|
|
|
|
void
|
|
StructuredCloneData::Write(JSContext* aCx,
|
|
JS::Handle<JS::Value> aValue,
|
|
ErrorResult &aRv)
|
|
{
|
|
MOZ_ASSERT(!Data());
|
|
|
|
StructuredCloneHolder::Write(aCx, aValue, aRv);
|
|
if (NS_WARN_IF(aRv.Failed())) {
|
|
return;
|
|
}
|
|
|
|
uint64_t* data = nullptr;
|
|
size_t dataLength = 0;
|
|
mBuffer->steal(&data, &dataLength);
|
|
mBuffer = nullptr;
|
|
mSharedData = new SharedJSAllocatedData(data, dataLength);
|
|
}
|
|
|
|
void
|
|
StructuredCloneData::WriteIPCParams(IPC::Message* aMsg) const
|
|
{
|
|
WriteParam(aMsg, DataLength());
|
|
|
|
if (DataLength()) {
|
|
// Structured clone data must be 64-bit aligned.
|
|
aMsg->WriteBytes(Data(), DataLength(), sizeof(uint64_t));
|
|
}
|
|
}
|
|
|
|
bool
|
|
StructuredCloneData::ReadIPCParams(const IPC::Message* aMsg,
|
|
void** aIter)
|
|
{
|
|
MOZ_ASSERT(!Data());
|
|
|
|
size_t dataLength = 0;
|
|
if (!ReadParam(aMsg, aIter, &dataLength)) {
|
|
return false;
|
|
}
|
|
|
|
if (!dataLength) {
|
|
return true;
|
|
}
|
|
|
|
uint64_t* dataBuffer = nullptr;
|
|
const char** buffer =
|
|
const_cast<const char**>(reinterpret_cast<char**>(&dataBuffer));
|
|
// Structured clone data must be 64-bit aligned.
|
|
if (!aMsg->ReadBytes(aIter, buffer, dataLength, sizeof(uint64_t))) {
|
|
return false;
|
|
}
|
|
|
|
mSharedData = SharedJSAllocatedData::CreateFromExternalData(dataBuffer,
|
|
dataLength);
|
|
NS_ENSURE_TRUE(mSharedData, false);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
StructuredCloneData::CopyExternalData(const void* aData,
|
|
size_t aDataLength)
|
|
{
|
|
MOZ_ASSERT(!Data());
|
|
mSharedData = SharedJSAllocatedData::CreateFromExternalData(aData,
|
|
aDataLength);
|
|
NS_ENSURE_TRUE(mSharedData, false);
|
|
return true;
|
|
}
|
|
|
|
} // namespace ipc
|
|
} // namespace dom
|
|
} // namespace mozilla
|