util-linux/misc-utils/mcookie.c

45 lines
868 B
C

/* mcookie.c -- Generates random numbers for xauth
* Created: Fri Feb 3 10:42:48 1995 by faith@cs.unc.edu
* Revised: Sun Feb 12 20:29:58 1995 by faith@cs.unc.edu
* Public Domain 1995 Rickard E. Faith (faith@cs.unc.edu)
* This program comes with ABSOLUTELY NO WARRANTY.
*
* mcookie.c,v 1.1.1.1 1995/02/22 19:09:16 faith Exp
*/
#define SECURE 1
#include <stdio.h>
#include <stdlib.h>
#if SECURE
#include <sys/time.h>
#include <unistd.h>
#endif
int main( void )
{
int i;
#if SECURE
struct timeval tv;
struct timezone tz;
gettimeofday( &tv, &tz );
srand( tv.tv_sec + tv.tv_usec );
#else
long int t;
time( &t );
srand( t );
#endif
for (i = 0; i < 32; i++) {
int r = (rand() & 0x0f0) >> 4;
if (r < 10) putchar( '0' + r );
else putchar( 'a' + r - 10 );
}
putchar ( '\n' );
return 0;
}