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/*
* extlib.c
*
* Copyright 2024 axtlos <axtlos@disroot.org>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#define _XOPEN_SOURCE 500
#define USE_SECURE_MEM
#define __STDC_WANT_LIB_EXT1__ 1
#include <ftw.h>
#include "extlib.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#undef free
#undef malloc
void
free_secure (void **__ptr, size_t ptrlen)
{
memset_s (*__ptr, ptrlen + 1, 0, ptrlen);
free (*__ptr);
*__ptr = NULL;
return;
}
void *
malloc_secure (size_t len)
{
void *mem = calloc (1, len);
return mem;
}
int
memvcmp (void *str, char val, size_t n)
{
char str2[n];
memset (str2, val, n);
return memcmp (str, str2, n);
}
size_t
fcopy (FILE *src, FILE *dst)
{
char buffer[BUFSIZ];
size_t n, copied = 0;
if (src == NULL || dst == NULL)
return -1;
while ((n = fread (buffer, sizeof (char), sizeof (buffer), src)) > 0)
{
if (fwrite (buffer, sizeof (char), n, dst) != n)
{
fprintf (stderr, "Failed to copy data");
return -1;
}
fflush (dst);
copied += n;
}
return copied;
}
int
rmfile (const char *fpath,
const struct stat *sb, int typeflag, struct FTW *ftwbuf)
{
int err = remove (fpath);
if (err < 0)
return err;
return 0;
}
int
rrmdir (char *pathname)
{
int err = nftw (pathname, rmfile, 10, FTW_DEPTH | FTW_MOUNT | FTW_PHYS);
if (err < 0)
return err;
return 0;
}
inline float
min (float v, float min_v)
{
return (v < min_v) ? min_v : v;
}
inline float
max (float v, float max_v)
{
return (v > max_v) ? max_v : v;
}
inline float
cap (float v, float min_v, float max_v)
{
return min(max(v, max_v), min_v);
}
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