xref: /freebsd/usr.bin/keylogout/keylogout.c (revision ce834215a70ff69e7e222827437116eee2f9ac6f)
1 /*
2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3  * unrestricted use provided that this legend is included on all tape
4  * media and as a part of the software program in whole or part.  Users
5  * may copy or modify Sun RPC without charge, but are not authorized
6  * to license or distribute it to anyone else except as part of a product or
7  * program developed by the user or with the express written consent of
8  * Sun Microsystems, Inc.
9  *
10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13  *
14  * Sun RPC is provided with no support and without any obligation on the
15  * part of Sun Microsystems, Inc. to assist in its use, correction,
16  * modification or enhancement.
17  *
18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20  * OR ANY PART THEREOF.
21  *
22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23  * or profits or other special, indirect and consequential damages, even if
24  * Sun has been advised of the possibility of such damages.
25  *
26  * Sun Microsystems, Inc.
27  * 2550 Garcia Avenue
28  * Mountain View, California  94043
29  */
30 /*
31  * Copyright (C) 1986, Sun Microsystems, Inc.
32  */
33 
34 /*
35  * unset the secret key on local machine
36  */
37 #include <stdio.h>
38 #include <string.h>
39 #include <unistd.h>
40 #include <sys/types.h>
41 #include <rpc/rpc.h>
42 #include <rpc/key_prot.h>
43 
44 int
45 main(argc,argv)
46 	int argc;
47 	char *argv[];
48 {
49 	static char secret[HEXKEYBYTES + 1];
50 
51 	if (geteuid() == 0) {
52 		if ((argc != 2 ) || (strcmp(argv[1], "-f") != 0)) {
53 			fprintf(stderr,
54 "keylogout by root would break all servers that use secure rpc!\n");
55 			fprintf(stderr,
56 "root may use keylogout -f to do this (at your own risk)!\n");
57 			exit(-1);
58 		}
59 	}
60 
61 	if (key_setsecret(secret) < 0) {
62 		fprintf(stderr, "Could not unset your secret key.\n");
63 		fprintf(stderr, "Maybe the keyserver is down?\n");
64 		exit(1);
65 	}
66 	exit(0);
67 	/* NOTREACHED */
68 }
69