forked from mirrors/gecko-dev
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=4 sw=4 et tw=80:
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*
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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 "JavaScriptParent.h"
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#include "mozilla/dom/ContentParent.h"
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#include "nsJSUtils.h"
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#include "jsfriendapi.h"
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#include "jswrapper.h"
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#include "js/Proxy.h"
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#include "HeapAPI.h"
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#include "xpcprivate.h"
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#include "mozilla/Casting.h"
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using namespace js;
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using namespace JS;
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using namespace mozilla;
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using namespace mozilla::jsipc;
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using namespace mozilla::dom;
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static void
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TraceParent(JSTracer *trc, void *data)
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{
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static_cast<JavaScriptParent *>(data)->trace(trc);
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}
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JavaScriptParent::JavaScriptParent(JSRuntime *rt)
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: JavaScriptShared(rt),
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JavaScriptBase<PJavaScriptParent>(rt)
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{
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}
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JavaScriptParent::~JavaScriptParent()
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{
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JS_RemoveExtraGCRootsTracer(rt_, TraceParent, this);
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}
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bool
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JavaScriptParent::init()
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{
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if (!WrapperOwner::init())
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return false;
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JS_AddExtraGCRootsTracer(rt_, TraceParent, this);
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return true;
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}
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void
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JavaScriptParent::trace(JSTracer *trc)
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{
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objects_.trace(trc);
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unwaivedObjectIds_.trace(trc);
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waivedObjectIds_.trace(trc);
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}
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JSObject *
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JavaScriptParent::scopeForTargetObjects()
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{
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// CPWOWs from the child need to point into the parent's unprivileged junk
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// scope so that a compromised child cannot compromise the parent. In
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// practice, this means that a child process can only (a) hold parent
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// objects alive and (b) invoke them if they are callable.
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return xpc::UnprivilegedJunkScope();
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}
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mozilla::ipc::IProtocol*
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JavaScriptParent::CloneProtocol(Channel* aChannel, ProtocolCloneContext* aCtx)
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{
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ContentParent *contentParent = aCtx->GetContentParent();
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nsAutoPtr<PJavaScriptParent> actor(contentParent->AllocPJavaScriptParent());
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if (!actor || !contentParent->RecvPJavaScriptConstructor(actor)) {
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return nullptr;
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}
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return actor.forget();
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}
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PJavaScriptParent *
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mozilla::jsipc::NewJavaScriptParent(JSRuntime *rt)
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{
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JavaScriptParent *parent = new JavaScriptParent(rt);
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if (!parent->init()) {
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delete parent;
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return nullptr;
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}
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return parent;
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}
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void
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mozilla::jsipc::ReleaseJavaScriptParent(PJavaScriptParent *parent)
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{
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static_cast<JavaScriptParent *>(parent)->decref();
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}
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