diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /security/sandbox/chromium/base/rand_util_win.cc | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'security/sandbox/chromium/base/rand_util_win.cc')
-rw-r--r-- | security/sandbox/chromium/base/rand_util_win.cc | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/security/sandbox/chromium/base/rand_util_win.cc b/security/sandbox/chromium/base/rand_util_win.cc new file mode 100644 index 0000000000..193a3f63a3 --- /dev/null +++ b/security/sandbox/chromium/base/rand_util_win.cc @@ -0,0 +1,38 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "base/rand_util.h" + +#include <windows.h> +#include <stddef.h> +#include <stdint.h> + +// #define needed to link in RtlGenRandom(), a.k.a. SystemFunction036. See the +// "Community Additions" comment on MSDN here: +// http://msdn.microsoft.com/en-us/library/windows/desktop/aa387694.aspx +#define SystemFunction036 NTAPI SystemFunction036 +#include <ntsecapi.h> +#undef SystemFunction036 + +#include <algorithm> +#include <limits> + +#include "base/logging.h" + +namespace base { + +void RandBytes(void* output, size_t output_length) { + char* output_ptr = static_cast<char*>(output); + while (output_length > 0) { + const ULONG output_bytes_this_pass = static_cast<ULONG>(std::min( + output_length, static_cast<size_t>(std::numeric_limits<ULONG>::max()))); + const bool success = + RtlGenRandom(output_ptr, output_bytes_this_pass) != FALSE; + CHECK(success); + output_length -= output_bytes_this_pass; + output_ptr += output_bytes_this_pass; + } +} + +} // namespace base |