tools/crypt.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Utility for crypt(3).
   6     Lang: english
   7 */
   8
   9 /*
  10     This is the sourcecode for crypt. It is a small program which makes
  11     it more convenient to create Unix passwords with crypt(3).
  12
  13     To compile:
  14
  15         cc crypt.c -o crypt
  16
  17     If you get an error during link which says that "crypt" is an
  18     unknown symbol, try this:
  19
  20         cc crypt.c -o crypt -lcrypt
  21
  22     Then run this with your password as the first argument. If you
  23     want to test if it really works, try it like this:
  24
  25         crypt test xx
  26
  27     which must print:
  28
  29         Encrypting test: xx1LtbDbOY4/E
  30
  31     If it prints something else, then your version of crypt(3) is not
  32     compatible.
  33 */
  34
  35 #define _XOPEN_SOURCE
  36 #include <unistd.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <time.h>
  40
  41 int main (int argc, char ** argv)
  42 {
  43     char salt[3];
  44     char set[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./";
  45
  46
  47     if (argc < 2 || argc > 3)
  48     {
  49         printf("Usage: %s <password> [<salt>]\n", argv[0]);
  50         return 1;
  51     }
  52
  53     srand (time (NULL));
  54
  55     salt[0] = set[getpid() % sizeof(set)];
  56     salt[1] = set[rand() % sizeof(set)];
  57     salt[2] = 0;
  58
  59     if (argc > 2)
  60     {
  61         salt[0] = argv[2][0];
  62         salt[1] = argv[2][1];
  63     }
  64
  65     printf ("Encrypting %s: %s\n", argv[1], crypt (argv[1], salt));
  66
  67     return 0;
  68 }
  69