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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef UTIL_SSTRNCPY_H
#define UTIL_SSTRNCPY_H
#ifndef __STDC_WANT_LIB_EXT1__
#define __STDC_WANT_LIB_EXT1__ 1
#endif
#include <errno.h>
#include <string.h>
#ifdef __STDC_LIB_EXT1__
// If safe string functions already available in the system, use them
#elif ENABLE_SAFEC
// If safe string functions not available and SafeC is enabled,
// use SafeC
#include <safe_string.h>
#else
// Use custom safe string functions
typedef int errno_t;
#define EOK 0
#ifndef HICN_VPP_PLUGIN
/* This function is already defined in vppinfra/string.h */
/**
* @brief This function assures a null byte at the end of the buffer.
*/
static inline errno_t
strcpy_s (char *dst, size_t n, const char *src)
{
if (!dst || !src || !n)
{
fprintf (stderr, "[strncpy] invalid input received");
return EINVAL;
}
dst[n - 1] = 0;
strncpy (dst, src, n);
if (dst[n - 1] != 0)
{
fprintf (stderr, "[strncpy] '%s' has been trucated\n", src);
dst[n - 1] = 0;
return EINVAL;
}
return EOK;
}
static inline size_t
strnlen_s (const char *s, size_t maxlen)
{
if (s == NULL)
return 0;
return strnlen (s, maxlen);
}
#endif /* HICN_VPP_PLUGIN */
#endif /* __STDC_LIB_EXT1__ */
#endif /* UTIL_SSTRNCPY_H */
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