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 <sys/user.h> 37 38 #include <err.h> 39 #include <pwd.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <time.h> 43 #include <utmpx.h> 44 #include <unistd.h> 45 46 static void outputx(struct passwd *, struct lastlogx *); 47 static void usage(void); 48 49 int 50 main(int argc, char **argv) 51 { 52 int ch, i; 53 struct passwd *passwd; 54 struct lastlogx lastx; 55 56 while ((ch = getopt(argc, argv, "")) != -1) { 57 usage(); 58 } 59 60 setpassent(1); /* Keep passwd file pointers open */ 61 62 /* Process usernames given on the command line. */ 63 if (argc > 1) { 64 for (i = 1; i < argc; ++i) { 65 if ((passwd = getpwnam(argv[i])) == NULL) { 66 warnx("user '%s' not found", argv[i]); 67 continue; 68 } 69 if ((getlastlogx(_PATH_LASTLOGX, passwd->pw_uid, 70 &lastx)) != NULL) { 71 outputx(passwd, &lastx); 72 goto done; 73 } 74 } 75 } 76 /* Read all lastlog entries, looking for active ones */ 77 else { 78 while ((passwd = getpwent()) != NULL) { 79 if ((getlastlogx(_PATH_LASTLOGX, passwd->pw_uid, 80 &lastx)) != NULL) { 81 if (lastx.ll_tv.tv_sec == 0) 82 continue; 83 outputx(passwd, &lastx); 84 } 85 } 86 } 87 88 done: 89 setpassent(0); /* Close passwd file pointers */ 90 91 exit(0); 92 } 93 94 static void 95 outputx(struct passwd *p, struct lastlogx *l) 96 { 97 printf("%-10s %-8s %-22.22s %s", 98 p->pw_name, l->ll_line, l->ll_host, 99 (l->ll_tv.tv_sec) ? ctime((&l->ll_tv.tv_sec)) : "Never logged in\n"); 100 } 101 102 static void 103 usage(void) 104 { 105 fprintf(stderr, "usage: lastlogin [user ...]\n"); 106 exit(1); 107 } 108