134 lines
3.4 KiB
C++
134 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "StructuredCloneData.h"
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#include "nsIDOMDOMException.h"
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#include "nsIMutable.h"
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#include "nsIXPConnect.h"
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#include "ipc/IPCMessageUtils.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/BlobBinding.h"
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#include "mozilla/dom/DOMTypes.h"
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#include "mozilla/dom/File.h"
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#include "mozilla/dom/ToJSValue.h"
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#include "nsContentUtils.h"
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#include "nsJSEnvironment.h"
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#include "MainThreadUtils.h"
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#include "StructuredCloneTags.h"
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#include "jsapi.h"
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namespace mozilla {
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namespace dom {
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namespace ipc {
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bool
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StructuredCloneData::Copy(const StructuredCloneData& aData)
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{
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if (!aData.mInitialized) {
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return true;
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}
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if (aData.SharedData()) {
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mSharedData = aData.SharedData();
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} else {
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mSharedData =
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SharedJSAllocatedData::CreateFromExternalData(aData.Data());
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NS_ENSURE_TRUE(mSharedData, false);
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}
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PortIdentifiers().AppendElements(aData.PortIdentifiers());
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MOZ_ASSERT(BlobImpls().IsEmpty());
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BlobImpls().AppendElements(aData.BlobImpls());
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MOZ_ASSERT(GetSurfaces().IsEmpty());
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MOZ_ASSERT(WasmModules().IsEmpty());
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mInitialized = true;
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return true;
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}
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void
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StructuredCloneData::Read(JSContext* aCx,
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JS::MutableHandle<JS::Value> aValue,
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ErrorResult &aRv)
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{
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MOZ_ASSERT(mInitialized);
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nsIGlobalObject *global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
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MOZ_ASSERT(global);
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ReadFromBuffer(global, aCx, Data(), aValue, aRv);
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}
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void
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StructuredCloneData::Write(JSContext* aCx,
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JS::Handle<JS::Value> aValue,
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ErrorResult &aRv)
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{
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Write(aCx, aValue, JS::UndefinedHandleValue, aRv);
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}
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void
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StructuredCloneData::Write(JSContext* aCx,
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JS::Handle<JS::Value> aValue,
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JS::Handle<JS::Value> aTransfer,
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ErrorResult &aRv)
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{
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MOZ_ASSERT(!mInitialized);
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StructuredCloneHolder::Write(aCx, aValue, aTransfer,
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JS::CloneDataPolicy().denySharedArrayBuffer(), aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return;
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}
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JSStructuredCloneData data(mBuffer->scope());
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mBuffer->abandon();
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mBuffer->steal(&data);
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mBuffer = nullptr;
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mSharedData = new SharedJSAllocatedData(Move(data));
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mInitialized = true;
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}
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void
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StructuredCloneData::WriteIPCParams(IPC::Message* aMsg) const
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{
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WriteParam(aMsg, Data());
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}
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bool
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StructuredCloneData::ReadIPCParams(const IPC::Message* aMsg,
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PickleIterator* aIter)
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{
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MOZ_ASSERT(!mInitialized);
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JSStructuredCloneData data(JS::StructuredCloneScope::DifferentProcess);
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if (!ReadParam(aMsg, aIter, &data)) {
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return false;
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}
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mSharedData = new SharedJSAllocatedData(Move(data));
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mInitialized = true;
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return true;
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}
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bool
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StructuredCloneData::CopyExternalData(const char* aData,
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size_t aDataLength)
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{
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MOZ_ASSERT(!mInitialized);
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mSharedData = SharedJSAllocatedData::CreateFromExternalData(aData,
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aDataLength);
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NS_ENSURE_TRUE(mSharedData, false);
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mInitialized = true;
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return true;
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}
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} // namespace ipc
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} // namespace dom
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} // namespace mozilla
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