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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsCOMPtr.h"
#include "nsIRandomGenerator.h"
#include "nsServiceManagerUtils.h"
#include "RelativeTimeline.h"
namespace mozilla {
int64_t RelativeTimeline::GetRandomTimelineSeed() {
if (mRandomTimelineSeed == 0) {
nsresult rv;
nsCOMPtr<nsIRandomGenerator> randomGenerator =
do_GetService("@mozilla.org/security/random-generator;1", &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
mRandomTimelineSeed = rand();
return mRandomTimelineSeed;
}
uint8_t* buffer = nullptr;
rv = randomGenerator->GenerateRandomBytes(sizeof(mRandomTimelineSeed),
&buffer);
if (NS_WARN_IF(NS_FAILED(rv))) {
mRandomTimelineSeed = rand();
return mRandomTimelineSeed;
}
memcpy(&mRandomTimelineSeed, buffer, sizeof(mRandomTimelineSeed));
MOZ_ASSERT(buffer);
free(buffer);
}
return mRandomTimelineSeed;
}
} // namespace mozilla
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