mirror of
https://github.com/classilla/tenfourfox.git
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126 lines
4.0 KiB
C++
126 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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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 "WebBrowserPersistDocumentParent.h"
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#include "mozilla/ipc/InputStreamUtils.h"
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#include "nsIInputStream.h"
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#include "nsThreadUtils.h"
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#include "WebBrowserPersistResourcesParent.h"
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#include "WebBrowserPersistSerializeParent.h"
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#include "WebBrowserPersistRemoteDocument.h"
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namespace mozilla {
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WebBrowserPersistDocumentParent::WebBrowserPersistDocumentParent()
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: mReflection(nullptr)
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{
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}
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void
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WebBrowserPersistDocumentParent::SetOnReady(nsIWebBrowserPersistDocumentReceiver* aOnReady)
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{
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MOZ_ASSERT(aOnReady);
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MOZ_ASSERT(!mOnReady);
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MOZ_ASSERT(!mReflection);
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mOnReady = aOnReady;
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}
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void
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WebBrowserPersistDocumentParent::ActorDestroy(ActorDestroyReason aWhy)
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{
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if (mReflection) {
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mReflection->ActorDestroy();
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mReflection = nullptr;
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}
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if (mOnReady) {
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// Bug 1202887: If this is part of a subtree destruction, then
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// anything which could cause another actor in that subtree to
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// be Send__delete__()ed will cause use-after-free -- such as
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// dropping the last reference to another document's
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// WebBrowserPersistRemoteDocument. To avoid that, defer the
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// callback until after the entire subtree is destroyed.
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nsCOMPtr<nsIRunnable> errorLater = NS_NewRunnableMethodWithArg
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<nsresult>(mOnReady, &nsIWebBrowserPersistDocumentReceiver::OnError,
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NS_ERROR_FAILURE);
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NS_DispatchToCurrentThread(errorLater);
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mOnReady = nullptr;
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}
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}
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WebBrowserPersistDocumentParent::~WebBrowserPersistDocumentParent()
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{
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MOZ_RELEASE_ASSERT(!mReflection);
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MOZ_ASSERT(!mOnReady);
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}
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bool
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WebBrowserPersistDocumentParent::RecvAttributes(const Attrs& aAttrs,
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const OptionalInputStreamParams& aPostData,
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nsTArray<FileDescriptor>&& aPostFiles)
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{
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// Deserialize the postData unconditionally so that fds aren't leaked.
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nsCOMPtr<nsIInputStream> postData =
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ipc::DeserializeInputStream(aPostData, aPostFiles);
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if (!mOnReady || mReflection) {
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return false;
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}
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mReflection = new WebBrowserPersistRemoteDocument(this, aAttrs, postData);
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RefPtr<WebBrowserPersistRemoteDocument> reflection = mReflection;
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mOnReady->OnDocumentReady(reflection);
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mOnReady = nullptr;
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return true;
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}
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bool
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WebBrowserPersistDocumentParent::RecvInitFailure(const nsresult& aFailure)
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{
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if (!mOnReady || mReflection) {
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return false;
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}
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mOnReady->OnError(aFailure);
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mOnReady = nullptr;
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// Warning: Send__delete__ deallocates this object.
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return Send__delete__(this);
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}
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PWebBrowserPersistResourcesParent*
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WebBrowserPersistDocumentParent::AllocPWebBrowserPersistResourcesParent()
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{
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MOZ_CRASH("Don't use this; construct the actor directly and AddRef.");
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return nullptr;
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}
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bool
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WebBrowserPersistDocumentParent::DeallocPWebBrowserPersistResourcesParent(PWebBrowserPersistResourcesParent* aActor)
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{
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// Turn the ref held by IPC back into an nsRefPtr.
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RefPtr<WebBrowserPersistResourcesParent> actor =
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already_AddRefed<WebBrowserPersistResourcesParent>(
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static_cast<WebBrowserPersistResourcesParent*>(aActor));
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return true;
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}
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PWebBrowserPersistSerializeParent*
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WebBrowserPersistDocumentParent::AllocPWebBrowserPersistSerializeParent(
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const WebBrowserPersistURIMap& aMap,
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const nsCString& aRequestedContentType,
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const uint32_t& aEncoderFlags,
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const uint32_t& aWrapColumn)
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{
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MOZ_CRASH("Don't use this; construct the actor directly.");
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return nullptr;
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}
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bool
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WebBrowserPersistDocumentParent::DeallocPWebBrowserPersistSerializeParent(PWebBrowserPersistSerializeParent* aActor)
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{
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delete aActor;
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return true;
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}
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} // namespace mozilla
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