char *BUF_strndup(const char *buf, size_t size) {
char *ret;
size_t alloc_size;
if (buf == NULL) {
return NULL;
}
size = BUF_strnlen(buf, size);
alloc_size = size + 1;
if (alloc_size < size) {
/* overflow */
OPENSSL_PUT_ERROR(BUF, BUF_strndup, ERR_R_MALLOC_FAILURE);
return NULL;
}
ret = OPENSSL_malloc(alloc_size);
if (ret == NULL) {
OPENSSL_PUT_ERROR(BUF, BUF_strndup, ERR_R_MALLOC_FAILURE);
return NULL;
}
memcpy(ret, buf, size);
ret[size] = '\0';
return ret;
}
char *BUF_strndup(const char *str, size_t siz)
{
char *ret;
if (str == NULL)
return NULL;
siz = BUF_strnlen(str, siz);
if (siz >= INT_MAX)
return NULL;
ret = OPENSSL_malloc(siz + 1);
if (ret == NULL) {
BUFerr(BUF_F_BUF_STRNDUP, ERR_R_MALLOC_FAILURE);
return NULL;
}
memcpy(ret, str, siz);
ret[siz] = '\0';
return (ret);
}