already_AddRefed<DOMRequest>
nsBrowserElement::Download(const nsAString& aUrl,
                           const BrowserElementDownloadOptions& aOptions,
                           ErrorResult& aRv)
{
  NS_ENSURE_TRUE(IsBrowserElementOrThrow(aRv), nullptr);

  RefPtr<DOMRequest> req;
  nsCOMPtr<nsIXPConnectWrappedJS> wrappedObj = do_QueryInterface(mBrowserElementAPI);
  MOZ_ASSERT(wrappedObj, "Failed to get wrapped JS from XPCOM component.");
  MOZ_RELEASE_ASSERT(!js::IsWrapper(wrappedObj->GetJSObject()));
  AutoJSAPI jsapi;
  if (!jsapi.Init(wrappedObj->GetJSObject())) {
    aRv.Throw(NS_ERROR_UNEXPECTED);
    return nullptr;
  }
  JSContext* cx = jsapi.cx();
  JS::Rooted<JS::Value> options(cx);
  aRv.MightThrowJSException();
  if (!ToJSValue(cx, aOptions, &options)) {
    aRv.StealExceptionFromJSContext(cx);
    return nullptr;
  }
  nsresult rv = mBrowserElementAPI->Download(aUrl, options, getter_AddRefs(req));

  if (NS_WARN_IF(NS_FAILED(rv))) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }

  return req.forget();
}
Beispiel #2
0
already_AddRefed<DOMRequest>
nsBrowserElement::ExecuteScript(const nsAString& aScript,
                                const BrowserElementExecuteScriptOptions& aOptions,
                                ErrorResult& aRv)
{
  NS_ENSURE_TRUE(IsBrowserElementOrThrow(aRv), nullptr);
  NS_ENSURE_TRUE(IsNotWidgetOrThrow(aRv), nullptr);

  nsCOMPtr<nsIDOMDOMRequest> req;
  nsCOMPtr<nsIXPConnectWrappedJS> wrappedObj = do_QueryInterface(mBrowserElementAPI);
  MOZ_ASSERT(wrappedObj, "Failed to get wrapped JS from XPCOM component.");
  AutoJSAPI jsapi;
  jsapi.Init(wrappedObj->GetJSObject());
  JSContext* cx = jsapi.cx();
  JS::Rooted<JS::Value> options(cx);
  aRv.MightThrowJSException();
  if (!ToJSValue(cx, aOptions, &options)) {
    aRv.StealExceptionFromJSContext(cx);
    return nullptr;
  }

  nsresult rv = mBrowserElementAPI->ExecuteScript(aScript, options, getter_AddRefs(req));

  if (NS_FAILED(rv)) {
    if (rv == NS_ERROR_INVALID_ARG) {
      aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR);
    } else {
      aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    }
    return nullptr;
  }

  return req.forget().downcast<DOMRequest>();
}
Beispiel #3
0
void FetchStreamReader::StartConsuming(JSContext* aCx, JS::HandleObject aStream,
                                       JS::MutableHandle<JSObject*> aReader,
                                       ErrorResult& aRv) {
  MOZ_DIAGNOSTIC_ASSERT(!mReader);
  MOZ_DIAGNOSTIC_ASSERT(aStream);

  aRv.MightThrowJSException();

  // Here, by spec, we can pick any global we want. Just to avoid extra
  // cross-compartment steps, we want to create the reader in the same
  // compartment of the owning Fetch Body object.
  // The same global will be used to retrieve data from this reader.
  JSAutoRealm ar(aCx, mGlobal->GetGlobalJSObject());

  JS::Rooted<JSObject*> reader(
      aCx, JS::ReadableStreamGetReader(aCx, aStream,
                                       JS::ReadableStreamReaderMode::Default));
  if (!reader) {
    aRv.StealExceptionFromJSContext(aCx);
    CloseAndRelease(aCx, NS_ERROR_DOM_INVALID_STATE_ERR);
    return;
  }

  mReader = reader;
  aReader.set(reader);

  aRv = mPipeOut->AsyncWait(this, 0, 0, mOwningEventTarget);
  if (NS_WARN_IF(aRv.Failed())) {
    return;
  }
}
void BrowsingContext::Location(JSContext* aCx,
                               JS::MutableHandle<JSObject*> aLocation,
                               ErrorResult& aError) {
  aError.MightThrowJSException();
  sSingleton.GetProxyObject(aCx, &mLocation, aLocation);
  if (!aLocation) {
    aError.StealExceptionFromJSContext(aCx);
  }
}
already_AddRefed<DOMRequest>
MobileMessageManager::SendMMS(const MmsParameters& aParams,
                              const MmsSendParameters& aSendParams,
                              ErrorResult& aRv)
{
  nsCOMPtr<nsIMmsService> mmsService = do_GetService(MMS_SERVICE_CONTRACTID);
  if (!mmsService) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  // Use the default one unless |aSendParams.serviceId| is available.
  uint32_t serviceId;
  nsresult rv;
  if (aSendParams.mServiceId.WasPassed()) {
    serviceId = aSendParams.mServiceId.Value();
  } else {
    rv = mmsService->GetMmsDefaultServiceId(&serviceId);
    if (NS_FAILED(rv)) {
      aRv.Throw(rv);
      return nullptr;
    }
  }

  nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
  if (!window) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  AutoJSAPI jsapi;
  if (NS_WARN_IF(!jsapi.Init(window))) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  JSContext *cx = jsapi.cx();
  JS::Rooted<JS::Value> val(cx);
  aRv.MightThrowJSException();
  if (!ToJSValue(cx, aParams, &val)) {
    aRv.StealExceptionFromJSContext(cx);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(window);
  nsCOMPtr<nsIMobileMessageCallback> msgCallback = new MobileMessageCallback(request);
  rv = mmsService->Send(serviceId, val, msgCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}
Beispiel #6
0
already_AddRefed<IDBTransaction>
IDBDatabase::Transaction(const StringOrStringSequence& aStoreNames,
                         IDBTransactionMode aMode,
                         ErrorResult& aRv)
{
  AssertIsOnOwningThread();

  aRv.MightThrowJSException();

  if (aMode == IDBTransactionMode::Readwriteflush &&
      !IndexedDatabaseManager::ExperimentalFeaturesEnabled()) {
    // Pretend that this mode doesn't exist. We don't have a way to annotate
    // certain enum values as depending on preferences so we just duplicate the
    // normal exception generation here.
    ThreadsafeAutoJSContext cx;

    // Disable any automatic error reporting that might be set up so that we
    // can grab the exception object.
    AutoForceSetExceptionOnContext forceExn(cx);

    MOZ_ALWAYS_FALSE(
      ThrowErrorMessage(cx,
                        MSG_INVALID_ENUM_VALUE,
                        "Argument 2 of IDBDatabase.transaction",
                        "readwriteflush",
                        "IDBTransactionMode"));
    MOZ_ASSERT(JS_IsExceptionPending(cx));

    JS::Rooted<JS::Value> exception(cx);
    MOZ_ALWAYS_TRUE(JS_GetPendingException(cx, &exception));

    aRv.ThrowJSException(cx, exception);
    return nullptr;
  }

  RefPtr<IDBTransaction> transaction;
  aRv = Transaction(aStoreNames, aMode, getter_AddRefs(transaction));
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  return transaction.forget();
}
Beispiel #7
0
already_AddRefed<LabeledBlob> 
LabeledBlob::Constructor(const GlobalObject& global,
                         JSContext* cx,
                         const nsAString& blob,
                         Label& privacy,
                         Label& trust, ErrorResult& aRv)
{
  aRv.MightThrowJSException();
  JSCompartment *compartment = js::GetContextCompartment(cx);
  MOZ_ASSERT(compartment);

  if (MOZ_UNLIKELY(!xpc::cowl::IsCompartmentConfined(compartment)))
    xpc::cowl::EnableCompartmentConfinement(compartment);

  nsRefPtr<Label> privs = xpc::cowl::GetCompartmentPrivileges(compartment);

  // current compartment label must flow to label of blob
  if (!xpc::cowl::GuardWrite(compartment, privacy, trust, privs)) {
    COWL::JSErrorResult(cx, aRv, 
        "Label of blob is not above current label or below current clearance.");
    return nullptr;
  }

  // Create blob

  nsRefPtr<Label> privacyCopy = privacy.Clone(aRv);
  if (aRv.Failed()) {
    return nullptr;
  }

  nsRefPtr<Label> trustCopy = trust.Clone(aRv);
  if (aRv.Failed()) {
    return nullptr;
  }

  nsRefPtr<LabeledBlob> labeledBlob = new LabeledBlob(blob, privacy, trust);

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

  return labeledBlob.forget();
}
Beispiel #8
0
void 
LabeledBlob::GetBlob(JSContext* cx, nsString& aRetVal, ErrorResult& aRv) const
{
  aRv.MightThrowJSException();
  JSCompartment *compartment = js::GetContextCompartment(cx);
  MOZ_ASSERT(compartment);

  if (MOZ_UNLIKELY(!xpc::cowl::IsCompartmentConfined(compartment)))
    xpc::cowl::EnableCompartmentConfinement(compartment);

  nsRefPtr<Label> privs = xpc::cowl::GetCompartmentPrivileges(compartment);

  // current compartment label must flow to label of target
  // raise it if need be
  // TODO: raise label if the following check does not hold
  if (!xpc::cowl::GuardRead(compartment, *mPrivacy,*mTrust, privs, cx)) {
    COWL::JSErrorResult(cx, aRv, "Cannot inspect blob.");
    return;
  }
  aRetVal = mBlob;

}
Beispiel #9
0
already_AddRefed<Response>
Response::Clone(JSContext* aCx, ErrorResult& aRv)
{
  bool bodyUsed = GetBodyUsed(aRv);
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  if (!bodyUsed && mReadableStreamBody) {
    aRv.MightThrowJSException();

    AutoJSAPI jsapi;
    if (!jsapi.Init(mOwner)) {
      aRv.Throw(NS_ERROR_FAILURE);
      return nullptr;
    }

    JSContext* cx = jsapi.cx();
    JS::Rooted<JSObject*> body(cx, mReadableStreamBody);
    bool locked;
    // We just need to check the 'locked' state because GetBodyUsed() already
    // checked the 'disturbed' state.
    if (!JS::ReadableStreamIsLocked(cx, body, &locked)) {
      aRv.StealExceptionFromJSContext(cx);
      return nullptr;
    }

    bodyUsed = locked;
  }

  if (bodyUsed) {
    aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
    return nullptr;
  }

  RefPtr<FetchStreamReader> streamReader;
  nsCOMPtr<nsIInputStream> inputStream;

  JS::Rooted<JSObject*> body(aCx);
  MaybeTeeReadableStreamBody(aCx, &body,
                             getter_AddRefs(streamReader),
                             getter_AddRefs(inputStream), aRv);
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  MOZ_ASSERT_IF(body, streamReader);
  MOZ_ASSERT_IF(body, inputStream);

  RefPtr<InternalResponse> ir =
    mInternalResponse->Clone(body
      ? InternalResponse::eDontCloneInputStream
      : InternalResponse::eCloneInputStream);

  RefPtr<Response> response = new Response(mOwner, ir, GetSignalImpl());

  if (body) {
    // Maybe we have a body, but we receive null from MaybeTeeReadableStreamBody
    // if this body is a native stream.   In this case the InternalResponse will
    // have a clone of the native body and the ReadableStream will be created
    // lazily if needed.
    response->SetReadableStreamBody(aCx, body);
    response->mFetchStreamReader = streamReader;
    ir->SetBody(inputStream, InternalResponse::UNKNOWN_BODY_SIZE);
  }

  return response.forget();
}
Beispiel #10
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();
}