Пример #1
0
/*static*/ already_AddRefed<Response>
Response::Constructor(const GlobalObject& aGlobal,
                      const Optional<ArrayBufferOrArrayBufferViewOrBlobOrFormDataOrUSVStringOrURLSearchParams>& aBody,
                      const ResponseInit& aInit, ErrorResult& aRv)
{
  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());

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

  nsCString statusText;
  if (aInit.mStatusText.WasPassed()) {
    statusText = aInit.mStatusText.Value();
    nsACString::const_iterator start, end;
    statusText.BeginReading(start);
    statusText.EndReading(end);
    if (FindCharInReadable('\r', start, end)) {
      aRv.ThrowTypeError(MSG_RESPONSE_INVALID_STATUSTEXT_ERROR);
      return nullptr;
    }
    // Reset iterator since FindCharInReadable advances it.
    statusText.BeginReading(start);
    if (FindCharInReadable('\n', start, end)) {
      aRv.ThrowTypeError(MSG_RESPONSE_INVALID_STATUSTEXT_ERROR);
      return nullptr;
    }
  } else {
    // Since we don't support default values for ByteString.
    statusText = NS_LITERAL_CSTRING("OK");
  }

  nsRefPtr<InternalResponse> internalResponse =
    new InternalResponse(aInit.mStatus, statusText);

  // Grab a valid channel info from the global so this response is 'valid' for
  // interception.
  if (NS_IsMainThread()) {
    ChannelInfo info;
    nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(global);
    if (window) {
      nsIDocument* doc = window->GetExtantDoc();
      MOZ_ASSERT(doc);
      info.InitFromDocument(doc);
    } else {
      info.InitFromChromeGlobal(global);
    }
    internalResponse->InitChannelInfo(info);
  } else {
    workers::WorkerPrivate* worker = workers::GetCurrentThreadWorkerPrivate();
    MOZ_ASSERT(worker);
    internalResponse->InitChannelInfo(worker->GetChannelInfo());
  }

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

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

    // Instead of using Fill, create an object to allow the constructor to
    // unwrap the HeadersInit.
    nsRefPtr<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()) {
    nsCOMPtr<nsIInputStream> bodyStream;
    nsCString contentType;
    aRv = ExtractByteStreamFromBody(aBody.Value(), getter_AddRefs(bodyStream), contentType);
    internalResponse->SetBody(bodyStream);

    if (!contentType.IsVoid() &&
        !internalResponse->Headers()->Has(NS_LITERAL_CSTRING("Content-Type"), aRv)) {
      internalResponse->Headers()->Append(NS_LITERAL_CSTRING("Content-Type"), contentType, aRv);
    }

    if (aRv.Failed()) {
      return nullptr;
    }
  }

  r->SetMimeType();
  return r.forget();
}
Пример #2
0
/*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 (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);

  // 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) {
      nsIDocument* doc = window->GetExtantDoc();
      MOZ_ASSERT(doc);
      info.InitFromDocument(doc);
    } else {
      info.InitFromChromeGlobal(global);
    }
    internalResponse->InitChannelInfo(info);
  } else {
    WorkerPrivate* worker = GetCurrentThreadWorkerPrivate();
    MOZ_ASSERT(worker);
    internalResponse->InitChannelInfo(worker->GetChannelInfo());
  }

  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()) {
    if (aInit.mStatus == 204 || aInit.mStatus == 205 || aInit.mStatus == 304) {
      aRv.ThrowTypeError<MSG_RESPONSE_NULL_STATUS_WITH_BODY>();
      return nullptr;
    }

    nsCString contentTypeWithCharset;
    nsCOMPtr<nsIInputStream> bodyStream;
    int64_t bodySize = InternalResponse::UNKNOWN_BODY_SIZE;

    const fetch::ResponseBodyInit& body = aBody.Value().Value();
    if (body.IsReadableStream()) {
      aRv.MightThrowJSException();

      JSContext* cx = aGlobal.Context();
      const ReadableStream& readableStream = body.GetAsReadableStream();

      JS::Rooted<JSObject*> readableStreamObj(cx, readableStream.Obj());

      bool disturbed;
      bool locked;
      if (!JS::ReadableStreamIsDisturbed(cx, readableStreamObj, &disturbed) ||
          !JS::ReadableStreamIsLocked(cx, readableStreamObj, &locked)) {
        aRv.StealExceptionFromJSContext(cx);
        return nullptr;
      }
      if (disturbed || locked) {
        aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
        return nullptr;
      }

      r->SetReadableStreamBody(cx, readableStreamObj);

      JS::ReadableStreamMode streamMode;
      if (!JS::ReadableStreamGetMode(cx, readableStreamObj, &streamMode)) {
        aRv.StealExceptionFromJSContext(cx);
        return nullptr;
      }
      if (streamMode == JS::ReadableStreamMode::ExternalSource) {
        // If this is a DOM generated ReadableStream, we can extract the
        // inputStream directly.
        void* underlyingSource = nullptr;
        if (!JS::ReadableStreamGetExternalUnderlyingSource(cx,
                                                           readableStreamObj,
                                                           &underlyingSource)) {
          aRv.StealExceptionFromJSContext(cx);
          return nullptr;
        }

        MOZ_ASSERT(underlyingSource);

        aRv = FetchStream::RetrieveInputStream(underlyingSource,
                                               getter_AddRefs(bodyStream));

        // The releasing of the external source is needed in order to avoid an
        // extra stream lock.
        if (!JS::ReadableStreamReleaseExternalUnderlyingSource(cx, readableStreamObj)) {
          aRv.StealExceptionFromJSContext(cx);
          return nullptr;
        }
        if (NS_WARN_IF(aRv.Failed())) {
          return nullptr;
        }
      } else {
        // If this is a JS-created ReadableStream, let's create a
        // FetchStreamReader.
        aRv = FetchStreamReader::Create(aGlobal.Context(), global,
                                        getter_AddRefs(r->mFetchStreamReader),
                                        getter_AddRefs(bodyStream));
        if (NS_WARN_IF(aRv.Failed())) {
          return nullptr;
        }
      }
    } else {
      uint64_t size = 0;
      aRv = ExtractByteStreamFromBody(body,
                                      getter_AddRefs(bodyStream),
                                      contentTypeWithCharset,
                                      size);
      if (NS_WARN_IF(aRv.Failed())) {
        return nullptr;
      }

      bodySize = size;
    }

    internalResponse->SetBody(bodyStream, bodySize);

    if (!contentTypeWithCharset.IsVoid() &&
        !internalResponse->Headers()->Has(NS_LITERAL_CSTRING("Content-Type"),
                                          aRv)) {
      // Ignore Append() failing here.
      ErrorResult error;
      internalResponse->Headers()->Append(NS_LITERAL_CSTRING("Content-Type"),
                                          contentTypeWithCharset, error);
      error.SuppressException();
    }

    if (aRv.Failed()) {
      return nullptr;
    }
  }

  r->SetMimeType();
  return r.forget();
}