contrib/opie/opieinfo.c

   1 /*
   2 opieinfo: Print a user's current OPIE sequence number and seed
   3
   4 %%% portions-copyright-cmetz-96
   5 Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
   6 Reserved. The Inner Net License Version 2 applies to these portions of
   7 the software.
   8 You should have received a copy of the license with this software. If
   9 you didn't get a copy, you may request one from <license@inner.net>.
  10
  11 Portions of this software are Copyright 1995 by Randall Atkinson and Dan
  12 McDonald, All Rights Reserved. All Rights under this copyright are assigned
  13 to the U.S. Naval Research Laboratory (NRL). The NRL Copyright Notice and
  14 License Agreement applies to this software.
  15
  16         History:
  17
  18         Modified by cmetz for OPIE 2.3. Removed unneeded debug message.
  19         Modified by cmetz for OPIE 2.2. Use FUNCTION definition et al.
  20                Fixed include order. Make everything static. Ifdef around
  21                some headers.
  22         Modified at NRL for OPIE 2.1. Substitute @@KEY_FILE@@. Re-write in
  23                C.
  24         Modified at NRL for OPIE 2.01. Remove hard-coded paths for grep and
  25                awk and let PATH take care of it. Substitute for Makefile
  26                variables $(EXISTS) and $(KEY_FILE). Only compute $WHO if
  27                there's a key file. Got rid of grep since awk can do the job
  28                itself.
  29         Modified at NRL for OPIE 2.0.
  30         Written at Bellcore for the S/Key Version 1 software distribution
  31                 (keyinfo)
  32
  33 $FreeBSD: head/contrib/opie/opieinfo.c 257264 2013-10-28 18:24:31Z sbruno $
  34
  35 */
  36
  37 #include "opie_cfg.h"
  38 #include <sys/param.h>
  39 #include <errno.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #if HAVE_UNISTD_H
  44 #include <unistd.h>
  45 #endif /* HAVE_UNISTD_H */
  46 #include "opie.h"
  47
  48 /* extern char *optarg; */
  49 /* extern int errno, optind; */
  50
  51 static char *getusername FUNCTION_NOARGS
  52 {
  53   char *login;
  54
  55   login = getlogin();
  56   if (login == NULL) {
  57     fprintf(stderr, "Cannot find login name\n");
  58     exit(1);
  59   }
  60   return login;
  61 }
  62
  63 int main FUNCTION((argc, argv), int argc AND char *argv[])
  64 {
  65   char *username;
  66   struct opie opie;
  67   int i;
  68
  69   while ((i = getopt(argc, argv, "hv")) != EOF) {
  70     switch (i) {
  71     case 'v':
  72       opieversion();
  73     case 'h':
  74     default:
  75       fprintf(stderr, "usage: %s [-h] [-v] [user_name]\n", argv[0]);
  76       exit(0);
  77     }
  78   }
  79
  80   if (optind < argc) {
  81     if (getuid() != 0) {
  82       fprintf(stderr, "Only superuser may get another user's keys\n");
  83       exit(1);
  84     }
  85     username = argv[optind];
  86   } else
  87     username = getusername();
  88
  89   if (strlen(username) >= MAXLOGNAME) {
  90     fprintf(stderr, "Username too long.\n");
  91     exit(1);
  92   }
  93
  94   if ((i = opielookup(&opie, username)) && (i != 2)) {
  95     if (i < 0)
  96       fprintf(stderr, "Error opening database! (errno = %d)\n", errno);
  97     else
  98       fprintf(stderr, "%s not found in database.\n", username);
  99     exit(1);
 100   }
 101
 102   printf("%d %s\n", opie.opie_n - 1, opie.opie_seed);
 103
 104   return 0;
 105 }