diff options
Diffstat (limited to 'toolkit/components/resistfingerprinting/RelativeTimeline.cpp')
-rw-r--r-- | toolkit/components/resistfingerprinting/RelativeTimeline.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/toolkit/components/resistfingerprinting/RelativeTimeline.cpp b/toolkit/components/resistfingerprinting/RelativeTimeline.cpp new file mode 100644 index 0000000000..dd2d304adb --- /dev/null +++ b/toolkit/components/resistfingerprinting/RelativeTimeline.cpp @@ -0,0 +1,33 @@ +/* -*- 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; + } + + rv = randomGenerator->GenerateRandomBytesInto(mRandomTimelineSeed); + if (NS_WARN_IF(NS_FAILED(rv))) { + mRandomTimelineSeed = rand(); + return mRandomTimelineSeed; + } + } + return mRandomTimelineSeed; +} + +} // namespace mozilla |