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Merge pull request #2144 from embhorn/zd4871

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Use snprintf with Win build
This commit is contained in:
John Safranek
2019-03-14 11:42:09 -07:00
committed by GitHub
parent ac47e889f7 d26a6b59a3
commit 4b56af67a2
1 changed files with 31 additions and 4 deletions
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35
wolfssl/wolfcrypt/types.h
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@@ -398,14 +398,41 @@
#ifndef USE_WINDOWS_API
#if defined(NO_FILESYSTEM) && (defined(OPENSSL_EXTRA) || \
defined(HAVE_PKCS7)) && !defined(NO_STDIO_FILESYSTEM)
/* case where stdio is not included else where but is needed for
* snprintf */
/* case where stdio is not included else where but is needed
for snprintf */
#include <stdio.h>
#endif
#define XSNPRINTF snprintf
#else
#define XSNPRINTF _snprintf
#endif
#ifdef _MSC_VER
#if (_MSC_VER >= 1900)
/* Beginning with the UCRT in Visual Studio 2015 and
Windows 10, snprintf is no longer identical to
_snprintf. The snprintf function behavior is now
C99 standard compliant. */
#define XSNPRINTF snprintf
#else
/* 4996 warning to use MS extensions e.g., _sprintf_s
instead of _snprintf */
#pragma warning(disable: 4996)
static WC_INLINE
int xsnprintf(char *buffer, size_t bufsize,
const char *format, ...) {
va_list ap;
int ret;
if ((int)bufsize <= 0) return -1;
va_start(ap, format);
ret = vsnprintf(buffer, bufsize, format, ap);
if (ret >= (int)bufsize)
ret = -1;
va_end(ap);
return ret;
}
#define XSNPRINTF xsnprintf
#endif /* (_MSC_VER >= 1900) */
#endif /* _MSC_VER */
#endif /* USE_WINDOWS_API */
#if defined(WOLFSSL_CERT_EXT) || defined(HAVE_ALPN)
/* use only Thread Safe version of strtok */