rework the password subsystem

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

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

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

#ifndef lint
static char sccsid[] = "@(#)passwd.c    5.3 (Berkeley) %G%";
#endif /* not lint */

#include <stdio.h>
#include <unistd.h>

#ifdef KERBEROS
int use_kerberos = 1;
#endif

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

#ifdef KERBEROS
       while ((ch = getopt(argc, argv, "l")) != EOF)
               switch (ch) {
               case 'l':               /* change local password file */
                       use_kerberos = 0;
                       break;
               default:
               case '?':
                       usage();
                       exit(1);
               }

       argc -= optind;
       argv += optind;
#endif

       uname = getlogin();

       switch(argc) {
       case 0:
               break;
       case 1:
#ifdef  KERBEROS
               if (use_kerberos && strcmp(argv[1], uname)) {
                       (void)fprintf(stderr,
                          "passwd: must kinit to change another's password\n");
                       exit(1);
               }
#endif
               uname = argv[0];
               break;
       default:
               usage();
               exit(1);
       }

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

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