contrib/opie/opiegen.c

   1 /* opiegen.c: Sample OTP generator based on the opiegenerator()
   2               library routine.
   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         History:
  12
  13         Modified by cmetz for OPIE 2.3. OPIE_PASS_MAX changed to
  14                 OPIE_SECRET_MAX. Send debug info to syslog.
  15         Modified by cmetz for OPIE 2.2. Use FUNCTION definition et al.
  16              Fixed include order.
  17         Created at NRL for OPIE 2.2.
  18 */
  19 #include "opie_cfg.h"
  20 #include <stdio.h>
  21 #if DEBUG
  22 #include <syslog.h>
  23 #endif /* DEBUG */
  24 #include "opie.h"
  25
  26 int main FUNCTION((argc, argv), int argc AND char *argv[])
  27 {
  28         char buffer[OPIE_CHALLENGE_MAX+1];
  29         char secret[OPIE_SECRET_MAX+1];
  30         char response[OPIE_RESPONSE_MAX+1];
  31         int result;
  32
  33         if (opieinsecure()) {
  34                 fputs("Sorry, but you don't seem to be on a secure terminal.\n", stderr);
  35 #if !DEBUG
  36                 exit(1);
  37 #endif /* !DEBUG */
  38         }
  39
  40         if (argc <= 1) {
  41                 fputs("Challenge: ", stderr);
  42                 if (!opiereadpass(buffer, sizeof(buffer)-1, 1))
  43                   fprintf(stderr, "Error reading challenge!");
  44         } else {
  45                 char *ap, *ep, *c;
  46                 int i;
  47
  48                 ep = buffer + sizeof(buffer) - 1;
  49                 for (i = 1, ap = buffer; (i < argc) && (ap < ep); i++) {
  50                         c = argv[i];
  51                         while ((*(ap++) = *(c++)) && (ap < ep));
  52                                 *(ap - 1) = ' ';
  53                 }
  54                 *(ap - 1) = 0;
  55 #if DEBUG
  56                 syslog(LOG_DEBUG, "opiegen: challenge is +%s+\n", buffer);
  57 #endif /* DEBUG */
  58         }
  59         buffer[sizeof(buffer)-1] = 0;
  60
  61         fputs("Secret pass phrase: ", stderr);
  62         if (!opiereadpass(secret, OPIE_SECRET_MAX, 0)) {
  63           fputs("Error reading secret pass phrase!\n", stderr);
  64           exit(1);
  65         };
  66
  67         switch (result = opiegenerator(buffer, secret, response)) {
  68                 case -2:
  69                         fputs("Not a valid OTP secret pass phrase.\n", stderr);
  70                         break;
  71                 case -1:
  72                         fputs("Error processing challenge!\n", stderr);
  73                         break;
  74                 case 1:
  75                         fputs("Not a valid OTP challenge.\n", stderr);
  76                         break;
  77                 case 0:
  78                         fputs(response, stdout);
  79                         fputc('\n', stdout);
  80                         fflush(stdout);
  81                         memset(secret, 0, sizeof(secret));
  82                         exit(0);
  83                 default:
  84                         fprintf(stderr, "Unknown error %d!\n", result);
  85         }
  86         memset(secret, 0, sizeof(secret));
  87         return 1;
  88 }