1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/ipc/PermissionMessageUtils.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,68 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "mozilla/dom/PermissionMessageUtils.h"
1.10 +#include "nsISerializable.h"
1.11 +#include "nsSerializationHelper.h"
1.12 +
1.13 +namespace IPC {
1.14 +
1.15 +void
1.16 +ParamTraits<Principal>::Write(Message* aMsg, const paramType& aParam) {
1.17 + bool isNull = !aParam.mPrincipal;
1.18 + WriteParam(aMsg, isNull);
1.19 + if (isNull) {
1.20 + return;
1.21 + }
1.22 +
1.23 + bool isSerialized = false;
1.24 + nsCString principalString;
1.25 + nsCOMPtr<nsISerializable> serializable = do_QueryInterface(aParam.mPrincipal);
1.26 + if (serializable) {
1.27 + nsresult rv = NS_SerializeToString(serializable, principalString);
1.28 + if (NS_SUCCEEDED(rv)) {
1.29 + isSerialized = true;
1.30 + }
1.31 + }
1.32 +
1.33 + if (!isSerialized) {
1.34 + NS_RUNTIMEABORT("Unable to serialize principal.");
1.35 + return;
1.36 + }
1.37 +
1.38 + WriteParam(aMsg, principalString);
1.39 +}
1.40 +
1.41 +bool
1.42 +ParamTraits<Principal>::Read(const Message* aMsg, void** aIter, paramType* aResult)
1.43 +{
1.44 + bool isNull;
1.45 + if (!ReadParam(aMsg, aIter, &isNull)) {
1.46 + return false;
1.47 + }
1.48 +
1.49 + if (isNull) {
1.50 + aResult->mPrincipal = nullptr;
1.51 + return true;
1.52 + }
1.53 +
1.54 + nsCString principalString;
1.55 + if (!ReadParam(aMsg, aIter, &principalString)) {
1.56 + return false;
1.57 + }
1.58 +
1.59 + nsCOMPtr<nsISupports> iSupports;
1.60 + nsresult rv = NS_DeserializeObject(principalString, getter_AddRefs(iSupports));
1.61 + NS_ENSURE_SUCCESS(rv, false);
1.62 +
1.63 + nsCOMPtr<nsIPrincipal> principal = do_QueryInterface(iSupports);
1.64 + NS_ENSURE_TRUE(principal, false);
1.65 +
1.66 + principal.swap(aResult->mPrincipal);
1.67 + return true;
1.68 +}
1.69 +
1.70 +} // namespace IPC
1.71 +
