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master
main/explicit_bzero.c
48 строк
2 KB
Niels Dossche
Implement GH-15483: Use C23 memset_explicit() for ZEND_SECURE_ZERO() if available (#18713)
29 июн 2025, 15:29
Не верифицирован
29 июн 2025, 15:29
8d116a4
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/* +----------------------------------------------------------------------+ | Copyright (c) The PHP Group | +----------------------------------------------------------------------+ | This source file is subject to version 3.01 of the PHP license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | https://www.php.net/license/3_01.txt | | If you did not receive a copy of the PHP license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@php.net so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Author: | +----------------------------------------------------------------------+ */ #include "php.h" #ifndef HAVE_EXPLICIT_BZERO /* $OpenBSD: explicit_bzero.c,v 1.4 2015/08/31 02:53:57 guenther Exp $ */ /* * Public domain. * Written by Matthew Dempsky. */ #include <string.h> PHPAPI void php_explicit_bzero(void *dst, size_t siz) { #ifdef HAVE_MEMSET_EXPLICIT /* C23 */ memset_explicit(dst, 0, siz); #elif defined(HAVE_EXPLICIT_MEMSET) /* NetBSD-specific */ explicit_memset(dst, 0, siz); #elif defined(PHP_WIN32) RtlSecureZeroMemory(dst, siz); #elif defined(__GNUC__) memset(dst, 0, siz); asm __volatile__("" :: "r"(dst) : "memory"); #else size_t i = 0; volatile unsigned char *buf = (volatile unsigned char *)dst; for (; i < siz; i ++) buf[i] = 0; #endif } #endif