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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: LGPL-3.0-only
*/
#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 (*__ptr, 0, ptrlen);
free (*__ptr);
*__ptr = NULL;
return;
}
void *
malloc_secure (size_t len)
{
void *mem = malloc (len);
memset (mem, 0, len);
return mem;
}
int
memvcmp (void *str,
char val,
size_t n)
{
char str2[n];
memset (str2, val, n);
return memcmp (str, str2, n);
}
void
fcopy(FILE *f1, FILE *f2)
{
char buffer[BUFSIZ];
size_t n;
while ((n = fread (buffer, sizeof (char), sizeof (buffer), f1)) > 0)
{
if (fwrite (buffer, sizeof (char), n, f2) != n) {
fprintf (stderr, "Failed to copy data");
return;
}
fflush (f2);
}
}
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