usr.bin/keylogout/keylogout.c

   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  * $FreeBSD: src/usr.bin/keylogout/keylogout.c,v 1.3 1999/08/28 01:02:29 peter Exp $
  31  */
  32 /*
  33  * Copyright (C) 1986, Sun Microsystems, Inc.
  34  */
  35
  36 /*
  37  * unset the secret key on local machine
  38  */
  39
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <unistd.h>
  44 #include <rpc/key_prot.h>
  45
  46 int
  47 main(int argc, 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 }