misc-utils/mcookie.c

   1 /* mcookie.c -- Generates random numbers for xauth
   2  * Created: Fri Feb  3 10:42:48 1995 by faith@cs.unc.edu
   3  * Revised: Sun Feb 12 20:29:58 1995 by faith@cs.unc.edu
   4  * Public Domain 1995 Rickard E. Faith (faith@cs.unc.edu)
   5  * This program comes with ABSOLUTELY NO WARRANTY.
   6  *
   7  * mcookie.c,v 1.1.1.1 1995/02/22 19:09:16 faith Exp
   8  */
   9
  10 #define SECURE 1
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #if SECURE
  15 #include <sys/time.h>
  16 #include <unistd.h>
  17 #endif
  18
  19 int main( void )
  20 {
  21    int      i;
  22 #if SECURE
  23    struct timeval  tv;
  24    struct timezone tz;
  25
  26    gettimeofday( &tv, &tz );
  27    srand( tv.tv_sec + tv.tv_usec );
  28 #else
  29    long int t;
  30
  31    time( &t );
  32    srand( t );
  33 #endif
  34
  35    for (i = 0; i < 32; i++) {
  36       int r = (rand() & 0x0f0) >> 4;
  37
  38       if (r < 10) putchar( '0' + r );
  39       else        putchar( 'a' + r - 10 );
  40    }
  41    putchar ( '\n' );
  42
  43    return 0;
  44 }