1 /* 2 * Copyright (c) 1996 John M. Vinopal 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed for the NetBSD Project 16 * by John M. Vinopal. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $NetBSD: lastlogin.c,v 1.4 1998/02/03 04:45:35 perry Exp $ 33 * $FreeBSD: src/usr.sbin/lastlogin/lastlogin.c,v 1.2.2.2 2001/07/19 05:02:46 kris Exp $ 34 */ 35 36 #include <err.h> 37 #include <pwd.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <time.h> 41 #include <utmpx.h> 42 #include <unistd.h> 43 44 static void outputx(struct passwd *, struct lastlogx *); 45 static void usage(void); 46 47 int 48 main(int argc, char **argv) 49 { 50 int ch, i; 51 struct passwd *passwd; 52 struct lastlogx lastx; 53 54 while ((ch = getopt(argc, argv, "")) != -1) { 55 usage(); 56 } 57 58 setpassent(1); /* Keep passwd file pointers open */ 59 60 /* Process usernames given on the command line. */ 61 if (argc > 1) { 62 for (i = 1; i < argc; ++i) { 63 if ((passwd = getpwnam(argv[i])) == NULL) { 64 warnx("user '%s' not found", argv[i]); 65 continue; 66 } 67 if ((getlastlogx(_PATH_LASTLOGX, passwd->pw_uid, 68 &lastx)) != NULL) { 69 outputx(passwd, &lastx); 70 goto done; 71 } 72 } 73 } 74 /* Read all lastlogx entries, looking for active ones */ 75 else { 76 while ((passwd = getpwent()) != NULL) { 77 if ((getlastlogx(_PATH_LASTLOGX, passwd->pw_uid, 78 &lastx)) != NULL) { 79 if (lastx.ll_tv.tv_sec == 0) 80 continue; 81 outputx(passwd, &lastx); 82 } 83 } 84 } 85 86 done: 87 setpassent(0); /* Close passwd file pointers */ 88 89 exit(0); 90 } 91 92 static void 93 outputx(struct passwd *p, struct lastlogx *l) 94 { 95 printf("%-10s %-8s %-22.22s %s", 96 p->pw_name, l->ll_line, l->ll_host, 97 (l->ll_tv.tv_sec) ? ctime((&l->ll_tv.tv_sec)) : "Never logged in\n"); 98 } 99 100 static void 101 usage(void) 102 { 103 fprintf(stderr, "usage: lastlogin [user ...]\n"); 104 exit(1); 105 } 106