/*
 * detaint.c - make string untained
 * https://mta.org.ua/exim-4.94-conf/dlfunc/detaint/detaint.c
 *
 * Copyright (C) 2020-2023 Victor Ustugov <corvax+dlfunc@mta.org.ua>
 *
 * This library 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; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include <string.h>

//#define DLFUNC_IMPL
//#include "local_scan.h"
//#include "macros.h"
#include "exim.h"

//# define string_copy(s) string_copy_function(s)
//# define string_copyn(s, n) string_copyn_function((s), (n))
//# define string_copy_taint(s, t) string_copy_taint_function((s), (t))

extern uschar * string_copy_function(const uschar *);
extern uschar * string_copyn_function(const uschar *, int n);
extern uschar * string_copy_taint_function(const uschar *, BOOL tainted);

int detaint(uschar **yield, int argc, uschar *argv[]) {
	uschar *p1;
	uschar *p2;
	int i;

	if (argc != 1) {
		*yield = string_copy(US"Invalid number of arguments");
		return ERROR;
	}

//	*yield = string_copy_taint(argv[0], FALSE);
	*yield = store_get(Ustrlen(argv[0]) + 1, FALSE);
	p1 = argv[0];
	p2 = *yield;
	for (i = 0; i < Ustrlen(argv[0]); i++) {
		*p2 = *p1;
		p1++;
		p2++;
	}
	*p2 = 0;
	return OK;
}