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[unix-history] / usr / src / usr.bin / passwd / passwd.c

/*
* Copyright (c) 1988, 1993
*      The Regents of the University of California.  All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1988, 1993\n\
       The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)passwd.c    8.2 (Berkeley) %G%";
#endif /* not lint */

#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "extern.h"

void    usage __P((void));

#ifdef KERBEROS
int use_kerberos = 1;
#endif

int
main(argc, argv)
       int argc;
       char **argv;
{
       int ch;
       char *uname;

       while ((ch = getopt(argc, argv, "l")) != EOF)
               switch (ch) {
#ifdef KERBEROS
               case 'l':               /* change local password file */
                       use_kerberos = 0;
                       break;
#endif
               default:
               case '?':
                       usage();
               }

       argc -= optind;
       argv += optind;

       if ((uname = getlogin()) == NULL)
               err(1, "getlogin");

       switch(argc) {
       case 0:
               break;
       case 1:
#ifdef  KERBEROS
               if (use_kerberos && strcmp(argv[0], uname))
                       errx(1,"%s\n\t%s\n%s\n",
               "to change another user's Kerberos password, do",
               "\"kinit user; passwd; kdestroy\";",
               "to change a user's local passwd, use \"passwd -l user\"");
#endif
               uname = argv[0];
               break;
       default:
               usage();
       }

#ifdef  KERBEROS
       if (use_kerberos)
               exit(krb_passwd());
#endif
       exit(local_passwd(uname));
}

void
usage()
{

#ifdef  KERBEROS
       (void)fprintf(stderr, "usage: passwd [-l] user\n");
#else
       (void)fprintf(stderr, "usage: passwd user\n");
#endif
       exit(1);
}