tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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JSWindowActorParent.cpp (3401B)

      1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/dom/JSWindowActorParent.h"
      8 
      9 #include "mozilla/dom/BrowserParent.h"
     10 #include "mozilla/dom/ContentParent.h"
     11 #include "mozilla/dom/JSIPCValue.h"
     12 #include "mozilla/dom/JSIPCValueUtils.h"
     13 #include "mozilla/dom/JSWindowActorBinding.h"
     14 #include "mozilla/dom/MessageManagerBinding.h"
     15 #include "mozilla/dom/WindowGlobalChild.h"
     16 #include "mozilla/dom/WindowGlobalParent.h"
     17 
     18 namespace mozilla::dom {
     19 
     20 JSWindowActorParent::~JSWindowActorParent() { MOZ_ASSERT(!mManager); }
     21 
     22 JSObject* JSWindowActorParent::WrapObject(JSContext* aCx,
     23                                          JS::Handle<JSObject*> aGivenProto) {
     24  return JSWindowActorParent_Binding::Wrap(aCx, this, aGivenProto);
     25 }
     26 
     27 WindowGlobalParent* JSWindowActorParent::GetManager() const { return mManager; }
     28 
     29 WindowContext* JSWindowActorParent::GetWindowContext() const {
     30  return mManager;
     31 }
     32 
     33 void JSWindowActorParent::Init(const nsACString& aName,
     34                               WindowGlobalParent* aManager) {
     35  MOZ_ASSERT(!mManager, "Cannot Init() a JSWindowActorParent twice!");
     36  mManager = aManager;
     37  JSActor::Init(aName, /* aSendTyped= */ false);
     38 }
     39 
     40 void JSWindowActorParent::SendRawMessage(
     41    const JSActorMessageMeta& aMeta, JSIPCValue&& aData,
     42    UniquePtr<ipc::StructuredCloneData> aStack, ErrorResult& aRv) {
     43  if (NS_WARN_IF(!CanSend() || !mManager || !mManager->CanSend())) {
     44    aRv.ThrowInvalidStateError("JSWindowActorParent cannot send at the moment");
     45    return;
     46  }
     47 
     48  if (mManager->IsInProcess()) {
     49    SendRawMessageInProcess(
     50        aMeta, std::move(aData), std::move(aStack),
     51        [manager{mManager}]() { return manager->GetChildActor(); });
     52    return;
     53  }
     54 
     55  JSIPCValueUtils::SCDHolder holder;
     56  if (NS_WARN_IF(!JSIPCValueUtils::PrepareForSending(holder, aData))) {
     57    aRv.ThrowDataCloneError(
     58        nsPrintfCString("JSWindowActorParent serialization error: cannot "
     59                        "clone, in actor '%s'",
     60                        PromiseFlatCString(aMeta.actorName()).get()));
     61    return;
     62  }
     63 
     64  UniquePtr<ClonedMessageData> stackData;
     65  if (aStack) {
     66    stackData = MakeUnique<ClonedMessageData>();
     67    if (!aStack->BuildClonedMessageData(*stackData)) {
     68      stackData.reset();
     69    }
     70  }
     71 
     72  if (NS_WARN_IF(!mManager->SendRawMessage(aMeta, aData, stackData))) {
     73    aRv.ThrowOperationError(
     74        nsPrintfCString("JSWindowActorParent send error in actor '%s'",
     75                        PromiseFlatCString(aMeta.actorName()).get()));
     76    return;
     77  }
     78 }
     79 
     80 CanonicalBrowsingContext* JSWindowActorParent::GetBrowsingContext(
     81    ErrorResult& aRv) {
     82  if (!mManager) {
     83    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
     84    return nullptr;
     85  }
     86 
     87  return mManager->BrowsingContext();
     88 }
     89 
     90 void JSWindowActorParent::ClearManager() { mManager = nullptr; }
     91 
     92 NS_IMPL_CYCLE_COLLECTION_INHERITED(JSWindowActorParent, JSActor, mManager)
     93 
     94 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(JSWindowActorParent)
     95 NS_INTERFACE_MAP_END_INHERITING(JSActor)
     96 
     97 NS_IMPL_ADDREF_INHERITED(JSWindowActorParent, JSActor)
     98 NS_IMPL_RELEASE_INHERITED(JSWindowActorParent, JSActor)
     99 
    100 }  // namespace mozilla::dom