freebsd-dev/usr.bin/keylogout/keylogout.c

/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */
/*
 * Copyright (C) 1986, Sun Microsystems, Inc.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * unset the secret key on local machine
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <rpc/key_prot.h>

int
main(int argc, char **argv)
{
	static char secret[HEXKEYBYTES + 1];

	if (geteuid() == 0) {
		if ((argc != 2 ) || (strcmp(argv[1], "-f") != 0)) {
			fprintf(stderr,
"keylogout by root would break all servers that use secure rpc!\n");
			fprintf(stderr,
"root may use keylogout -f to do this (at your own risk)!\n");
			exit(1);
		}
	}

	if (key_setsecret(secret) < 0) {
		fprintf(stderr, "Could not unset your secret key.\n");
		fprintf(stderr, "Maybe the keyserver is down?\n");
		exit(1);
	}
	exit(0);
	/* NOTREACHED */
}