gecko-dev/dom/ipc/PermissionMessageUtils.cpp

65 строки
1.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/PermissionMessageUtils.h"
#include "nsISerializable.h"
#include "nsSerializationHelper.h"
namespace IPC {
void
ParamTraits<nsIPrincipal>::Write(Message* aMsg, nsIPrincipal* aParam)
{
bool isNull = !aParam;
WriteParam(aMsg, isNull);
if (isNull) {
return;
}
nsCString principalString;
nsresult rv = NS_SerializeToString(aParam, principalString);
if (NS_FAILED(rv)) {
MOZ_CRASH("Unable to serialize principal.");
return;
}
WriteParam(aMsg, principalString);
}
bool
ParamTraits<nsIPrincipal>::Read(const Message* aMsg,
PickleIterator* aIter,
RefPtr<nsIPrincipal>* aResult)
{
bool isNull;
if (!ReadParam(aMsg, aIter, &isNull)) {
return false;
}
if (isNull) {
*aResult = nullptr;
return true;
}
nsCString principalString;
if (!ReadParam(aMsg, aIter, &principalString)) {
return false;
}
nsCOMPtr<nsISupports> iSupports;
nsresult rv = NS_DeserializeObject(principalString, getter_AddRefs(iSupports));
NS_ENSURE_SUCCESS(rv, false);
nsCOMPtr<nsIPrincipal> principal = do_QueryInterface(iSupports);
NS_ENSURE_TRUE(principal, false);
*aResult = principal.forget();
return true;
}
} // namespace IPC