Пример #1
0
bool ScriptInterface::ParseJSON(const std::string& string_utf8, JS::MutableHandleValue out)
{
	JSAutoRequest rq(m->m_cx);
	std::wstring attrsW = wstring_from_utf8(string_utf8);
 	utf16string string(attrsW.begin(), attrsW.end());
	if (JS_ParseJSON(m->m_cx, reinterpret_cast<const jschar*>(string.c_str()), (u32)string.size(), out))
		return true;

	LOGERROR("JS_ParseJSON failed!");
	if (!JS_IsExceptionPending(m->m_cx))
		return false;

	JS::RootedValue exc(m->m_cx);
	if (!JS_GetPendingException(m->m_cx, &exc))
		return false;

	JS_ClearPendingException(m->m_cx);
	// We expect an object of type SyntaxError
	if (!exc.isObject())
		return false;

	JS::RootedValue rval(m->m_cx);
	JS::RootedObject excObj(m->m_cx, &exc.toObject());
	if (!JS_CallFunctionName(m->m_cx, excObj, "toString", JS::HandleValueArray::empty(), &rval))
		return false;

	std::wstring error;
	ScriptInterface::FromJSVal(m->m_cx, rval, error);
	LOGERROR("%s", utf8_from_wstring(error));
	return false;
}
template<size_t N> inline bool
Parse(JSContext *cx, const char (&input)[N], jsval *vp)
{
    AutoInflatedString str(cx);
    str = input;
    CHECK(JS_ParseJSON(cx, str.chars(), str.length(), vp));
    return true;
}
Пример #3
0
JSObject* ThreadProfile::ToJSObject(JSContext *aCx)
{
  JS::RootedValue val(aCx);
  std::stringstream ss;
  JSStreamWriter b(ss);
  StreamJSObject(b);
  NS_ConvertUTF8toUTF16 js_string(nsDependentCString(ss.str().c_str()));
  JS_ParseJSON(aCx, static_cast<const jschar*>(js_string.get()), js_string.Length(), &val);
  return &val.toObject();
}
template<size_t N> inline bool
Error(JSContext *cx, const char (&input)[N])
{
    AutoInflatedString str(cx);
    jsval dummy;
    str = input;
    CHECK(!JS_ParseJSON(cx, str.chars(), str.length(), &dummy));
    JS_ClearPendingException(cx);
    return true;
}
template<size_t N> inline bool
TryParse(JSContext *cx, const char (&input)[N], const jsval &expected)
{
    AutoInflatedString str(cx);
    jsval v;
    str = input;
    CHECK(JS_ParseJSON(cx, str.chars(), str.length(), &v));
    CHECK_SAME(v, expected);
    return true;
}
NS_IMETHODIMP
AutoMounterSetting::Observe(nsISupports* aSubject,
                            const char* aTopic,
                            const PRUnichar* aData)
{
  if (strcmp(aTopic, MOZSETTINGS_CHANGED) != 0) {
    return NS_OK;
  }

  // Note that this function gets called for any and all settings changes,
  // so we need to carefully check if we have the one we're interested in.
  //
  // The string that we're interested in will be a JSON string that looks like:
  //  {"key":"ums.autoMount","value":true}

  nsCOMPtr<nsIThreadJSContextStack> stack =
    do_GetService("@mozilla.org/js/xpc/ContextStack;1");
  if (!stack) {
    ERR("Failed to get JSContextStack");
    return NS_OK;
  }
  JSContext* cx = stack->GetSafeJSContext();
  if (!cx) {
    ERR("Failed to GetSafeJSContext");
    return NS_OK;
  }
  nsDependentString dataStr(aData);
  JS::Value val;
  if (!JS_ParseJSON(cx, dataStr.get(), dataStr.Length(), &val) ||
      !val.isObject()) {
    return NS_OK;
  }
  JSObject& obj(val.toObject());
  JS::Value key;
  if (!JS_GetProperty(cx, &obj, "key", &key) ||
      !key.isString()) {
    return NS_OK;
  }
  JSBool match;
  if (!JS_StringEqualsAscii(cx, key.toString(), UMS_MODE, &match) ||
      (match != JS_TRUE)) {
    return NS_OK;
  }
  JS::Value value;
  if (!JS_GetProperty(cx, &obj, "value", &value) ||
      !value.isInt32()) {
    return NS_OK;
  }
  int32_t mode = value.toInt32();
  SetAutoMounterMode(mode);

  return NS_OK;
}
Пример #7
0
NS_IMETHODIMP
nsJSON::DecodeToJSVal(const nsAString &str, JSContext *cx, JS::Value *result)
{
  JSAutoRequest ar(cx);

  if (!JS_ParseJSON(cx, static_cast<const jschar*>(PromiseFlatString(str).get()),
                    str.Length(), result)) {
    return NS_ERROR_UNEXPECTED;
  }

  return NS_OK;
}
Пример #8
0
JSObject* ThreadProfile::ToJSObject(JSContext *aCx)
{
  JS::RootedValue val(aCx);
  std::stringstream ss;
  {
    // Define a scope to prevent a moving GC during ~JSStreamWriter from
    // trashing the return value.
    JSStreamWriter b(ss);
    StreamJSObject(b);
    NS_ConvertUTF8toUTF16 js_string(nsDependentCString(ss.str().c_str()));
    JS_ParseJSON(aCx, static_cast<const char16_t*>(js_string.get()),
                 js_string.Length(), &val);
  }
  return &val.toObject();
}
Пример #9
0
already_AddRefed<Promise>
Request::ConsumeBody(ConsumeType aType, ErrorResult& aRv)
{
  nsRefPtr<Promise> promise = Promise::Create(mOwner, aRv);
  if (aRv.Failed()) {
    return nullptr;
  }

  if (BodyUsed()) {
    aRv.ThrowTypeError(MSG_REQUEST_BODY_CONSUMED_ERROR);
    return nullptr;
  }

  SetBodyUsed();

  // While the spec says to do this asynchronously, all the body constructors
  // right now only accept bodies whose streams are backed by an in-memory
  // buffer that can be read without blocking. So I think this is fine.
  nsCOMPtr<nsIInputStream> stream;
  mRequest->GetBody(getter_AddRefs(stream));

  if (!stream) {
    aRv = NS_NewByteInputStream(getter_AddRefs(stream), "", 0,
                                NS_ASSIGNMENT_COPY);
    if (aRv.Failed()) {
      return nullptr;
    }
  }

  AutoJSAPI api;
  api.Init(mOwner);
  JSContext* cx = api.cx();

  // We can make this assertion because for now we only support memory backed
  // structures for the body argument for a Request.
  MOZ_ASSERT(NS_InputStreamIsBuffered(stream));
  nsCString buffer;
  uint64_t len;
  aRv = stream->Available(&len);
  if (aRv.Failed()) {
    return nullptr;
  }

  aRv = NS_ReadInputStreamToString(stream, buffer, len);
  if (aRv.Failed()) {
    return nullptr;
  }

  buffer.SetLength(len);

  switch (aType) {
    case CONSUME_ARRAYBUFFER: {
      JS::Rooted<JSObject*> arrayBuffer(cx);
      arrayBuffer =
        ArrayBuffer::Create(cx, buffer.Length(),
                            reinterpret_cast<const uint8_t*>(buffer.get()));
      JS::Rooted<JS::Value> val(cx);
      val.setObjectOrNull(arrayBuffer);
      promise->MaybeResolve(cx, val);
      return promise.forget();
    }
    case CONSUME_BLOB: {
      // XXXnsm it is actually possible to avoid these duplicate allocations
      // for the Blob case by having the Blob adopt the stream's memory
      // directly, but I've not added a special case for now.
      //
      // This is similar to nsContentUtils::CreateBlobBuffer, but also deals
      // with worker wrapping.
      uint32_t blobLen = buffer.Length();
      void* blobData = moz_malloc(blobLen);
      nsRefPtr<File> blob;
      if (blobData) {
        memcpy(blobData, buffer.BeginReading(), blobLen);
        blob = File::CreateMemoryFile(GetParentObject(), blobData, blobLen,
                                      NS_ConvertUTF8toUTF16(mMimeType));
      } else {
        aRv = NS_ERROR_OUT_OF_MEMORY;
        return nullptr;
      }

      promise->MaybeResolve(blob);
      return promise.forget();
    }
    case CONSUME_JSON: {
      nsString decoded;
      aRv = DecodeUTF8(buffer, decoded);
      if (aRv.Failed()) {
        return nullptr;
      }

      JS::Rooted<JS::Value> json(cx);
      if (!JS_ParseJSON(cx, decoded.get(), decoded.Length(), &json)) {
        JS::Rooted<JS::Value> exn(cx);
        if (JS_GetPendingException(cx, &exn)) {
          JS_ClearPendingException(cx);
          promise->MaybeReject(cx, exn);
        }
      }
      promise->MaybeResolve(cx, json);
      return promise.forget();
    }
    case CONSUME_TEXT: {
      nsString decoded;
      aRv = DecodeUTF8(buffer, decoded);
      if (aRv.Failed()) {
        return nullptr;
      }

      promise->MaybeResolve(decoded);
      return promise.forget();
    }
  }

  NS_NOTREACHED("Unexpected consume body type");
  // Silence warnings.
  return nullptr;
}