text: /*
   * Copyright (c) 1996 John M. Vinopal
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed for the NetBSD Project
   *	by John M. Vinopal.
   * 4. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * $NetBSD: lastlogin.c,v 1.4 1998/02/03 04:45:35 perry Exp $
   * $FreeBSD: src/usr.sbin/lastlogin/lastlogin.c,v 1.2.2.2 2001/07/19 05:02:46 kris Exp $
   */
  
  #include <err.h>
  #include <pwd.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <time.h>
  #include <utmpx.h>
  #include <unistd.h>
  
  static	void	outputx(struct passwd *, struct lastlogx *);
  static	void	usage(void);
  
  int
  main(int argc, char **argv)
  {
  	int	ch, i;
  	struct passwd	*passwd;
  	struct lastlogx	lastx;
  
  	while ((ch = getopt(argc, argv, "")) != -1) {
  		usage();
  	}
  
  	setpassent(1);	/* Keep passwd file pointers open */
  
  	/* Process usernames given on the command line. */
  	if (argc > 1) {
  		for (i = 1; i < argc; ++i) {
  			if ((passwd = getpwnam(argv[i])) == NULL) {
  				warnx("user '%s' not found", argv[i]);
  				continue;
  			}
  			if ((getlastlogx(_PATH_LASTLOGX, passwd->pw_uid,
  			    &lastx)) != NULL) {
  				outputx(passwd, &lastx);
  				goto done;
  			}
  		}
  	}
  	/* Read all lastlogx entries, looking for active ones */
  	else {
  		while ((passwd = getpwent()) != NULL) {
  			if ((getlastlogx(_PATH_LASTLOGX, passwd->pw_uid,
  			    &lastx)) != NULL) {
  				if (lastx.ll_tv.tv_sec == 0)
  					continue;
  				outputx(passwd, &lastx);
  			}
  		}
  	}
  
  done:
  	setpassent(0);	/* Close passwd file pointers */
  
  	exit(0);
  }
  
  static void
  outputx(struct passwd *p, struct lastlogx *l)
  {
  	printf("%-10s  %-8s %-22.22s   %s",
  		p->pw_name, l->ll_line, l->ll_host,
  		(l->ll_tv.tv_sec) ? ctime((&l->ll_tv.tv_sec)) : "Never logged in\n");
  }
  
  static void
  usage(void)
  {
  	fprintf(stderr, "usage: lastlogin [user ...]\n");
  	exit(1);
  }
  