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Diffstat (limited to 'lib/includes/hicn/util/sstrncpy.h')
-rw-r--r-- | lib/includes/hicn/util/sstrncpy.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/lib/includes/hicn/util/sstrncpy.h b/lib/includes/hicn/util/sstrncpy.h new file mode 100644 index 000000000..0b397c26b --- /dev/null +++ b/lib/includes/hicn/util/sstrncpy.h @@ -0,0 +1,76 @@ +/* + * 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 */ |