C++ WorkerPrivate::GetPrincipalInfo方法代码示例

/*static*/
already_AddRefed<Response> Response::Constructor(
    const GlobalObject& aGlobal,
    const Optional<Nullable<fetch::ResponseBodyInit>>& aBody,
    const ResponseInit& aInit, ErrorResult& aRv) {
  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());

  if (NS_WARN_IF(!global)) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }

  if (aInit.mStatus < 200 || aInit.mStatus > 599) {
    aRv.ThrowRangeError<MSG_INVALID_RESPONSE_STATUSCODE_ERROR>();
    return nullptr;
  }

  // Check if the status text contains illegal characters
  nsACString::const_iterator start, end;
  aInit.mStatusText.BeginReading(start);
  aInit.mStatusText.EndReading(end);
  if (FindCharInReadable('\r', start, end)) {
    aRv.ThrowTypeError<MSG_RESPONSE_INVALID_STATUSTEXT_ERROR>();
    return nullptr;
  }
  // Reset iterator since FindCharInReadable advances it.
  aInit.mStatusText.BeginReading(start);
  if (FindCharInReadable('\n', start, end)) {
    aRv.ThrowTypeError<MSG_RESPONSE_INVALID_STATUSTEXT_ERROR>();
    return nullptr;
  }

  RefPtr<InternalResponse> internalResponse =
      new InternalResponse(aInit.mStatus, aInit.mStatusText);

  UniquePtr<mozilla::ipc::PrincipalInfo> principalInfo;

  // Grab a valid channel info from the global so this response is 'valid' for
  // interception.
  if (NS_IsMainThread()) {
    ChannelInfo info;
    nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(global);
    if (window) {
      Document* doc = window->GetExtantDoc();
      MOZ_ASSERT(doc);
      info.InitFromDocument(doc);

      principalInfo.reset(new mozilla::ipc::PrincipalInfo());
      nsresult rv =
          PrincipalToPrincipalInfo(doc->NodePrincipal(), principalInfo.get());
      if (NS_WARN_IF(NS_FAILED(rv))) {
        aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
        return nullptr;
      }

      internalResponse->InitChannelInfo(info);
    } else if (nsContentUtils::IsSystemPrincipal(global->PrincipalOrNull())) {
      info.InitFromChromeGlobal(global);

      internalResponse->InitChannelInfo(info);
    }

    /**
     * The channel info is left uninitialized if neither the above `if` nor
     * `else if` statements are executed; this could be because we're in a
     * WebExtensions content script, where the global (i.e. `global`) is a
     * wrapper, and the principal is an expanded principal. In this case,
     * as far as I can tell, there's no way to get the security info, but we'd
     * like the `Response` to be successfully constructed.
     */
  } else {
    WorkerPrivate* worker = GetCurrentThreadWorkerPrivate();
    MOZ_ASSERT(worker);
    internalResponse->InitChannelInfo(worker->GetChannelInfo());
    principalInfo =
        MakeUnique<mozilla::ipc::PrincipalInfo>(worker->GetPrincipalInfo());
  }

  internalResponse->SetPrincipalInfo(std::move(principalInfo));

  RefPtr<Response> r = new Response(global, internalResponse, nullptr);

  if (aInit.mHeaders.WasPassed()) {
    internalResponse->Headers()->Clear();

    // Instead of using Fill, create an object to allow the constructor to
    // unwrap the HeadersInit.
    RefPtr<Headers> headers =
        Headers::Create(global, aInit.mHeaders.Value(), aRv);
    if (aRv.Failed()) {
      return nullptr;
    }

    internalResponse->Headers()->Fill(*headers->GetInternalHeaders(), aRv);
    if (NS_WARN_IF(aRv.Failed())) {
      return nullptr;
    }
  }

  if (aBody.WasPassed() && !aBody.Value().IsNull()) {
//.........这里部分代码省略.........