From 22c74419e2c258319bc723351876604b3304604b Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 4 Mar 2021 20:22:03 +0100 Subject: Adding upstream version 2.0.0+debian. Signed-off-by: Daniel Baumann --- src/memzero.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 src/memzero.c (limited to 'src/memzero.c') diff --git a/src/memzero.c b/src/memzero.c new file mode 100644 index 0000000..98a3c0b --- /dev/null +++ b/src/memzero.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2016-2021, OARC, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" + +#if defined(__FreeBSD__) +#include +#elif defined(__OpenBSD__) +#include +#else +#ifndef __STDC_WANT_LIB_EXT1__ +#define __STDC_WANT_LIB_EXT1__ 1 +#endif +#include +#endif + +void dnscap_memzero(void* const pnt, const size_t len) +{ +#if defined(__FreeBSD__) || defined(__OpenBSD__) + explicit_bzero(pnt, len); +#elif defined(__STDC_LIB_EXT1__) + memset_s(pnt, 0, len); +#else + volatile unsigned char* volatile pnt_ = (volatile unsigned char* volatile)pnt; + size_t i = (size_t)0U; + + while (i < len) { + pnt_[i++] = 0U; + } +#endif +} -- cgit v1.2.3