2 * Copyright (c) 1996 John M. Vinopal
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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.
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
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 $
47 static void output(struct passwd *, struct lastlog *);
48 static void outputx(struct passwd *, struct lastlogx *);
49 static void usage(void);
52 main(int argc, char **argv)
57 struct passwd *passwd;
59 struct lastlogx lastx;
61 while ((ch = getopt(argc, argv, "")) != -1) {
65 if ((fp = fopen(_PATH_LASTLOG, "r")) == NULL)
66 err(1, "%s", _PATH_LASTLOG);
68 setpassent(1); /* Keep passwd file pointers open */
70 /* Process usernames given on the command line. */
72 for (i = 1; i < argc; ++i) {
73 if ((passwd = getpwnam(argv[i])) == NULL) {
74 warnx("user '%s' not found", argv[i]);
77 if ((getlastlogx(_PATH_LASTLOGX, passwd->pw_uid,
79 outputx(passwd, &lastx);
82 /* Calculate the offset into the lastlog file. */
83 offset = (long)(passwd->pw_uid * sizeof(last));
84 if (fseek(fp, offset, SEEK_SET)) {
88 if (fread(&last, sizeof(last), 1, fp) != 1) {
89 warnx("fread error on '%s'", passwd->pw_name);
93 output(passwd, &last);
96 /* Read all lastlog entries, looking for active ones */
98 while ((passwd = getpwent()) != NULL) {
99 if ((getlastlogx(_PATH_LASTLOGX, passwd->pw_uid,
101 if (lastx.ll_tv.tv_sec == 0)
103 outputx(passwd, &lastx);
105 offset = (long)(passwd->pw_uid * sizeof(last));
107 if (fseek(fp, offset, SEEK_SET)) {
110 if (fread(&last, sizeof(last), 1, fp) != 1) {
113 if (last.ll_time == 0)
115 output(passwd, &last);
119 for (i = 0; fread(&last, sizeof(last), 1, fp) == 1; i++) {
120 if (last.ll_time == 0)
122 if ((passwd = getpwuid((uid_t)i)) != NULL)
123 output(passwd, &last);
126 warnx("fread error");
131 setpassent(0); /* Close passwd file pointers */
137 /* Duplicate the output of last(1) */
139 output(struct passwd *p, struct lastlog *l)
141 printf("%-*.*s %-*.*s %-*.*s %s",
142 UT_NAMESIZE, UT_NAMESIZE, p->pw_name,
143 UT_LINESIZE+4, UT_LINESIZE+4, l->ll_line,
144 UT_HOSTSIZE, UT_HOSTSIZE, l->ll_host,
145 (l->ll_time) ? ctime(&(l->ll_time)) : "Never logged in\n");
149 outputx(struct passwd *p, struct lastlogx *l)
151 printf("%-*.*s %-*.*s %-*.*s %s",
152 UT_NAMESIZE, UT_NAMESIZE, p->pw_name,
153 UT_LINESIZE+4, UT_LINESIZE+4, l->ll_line,
154 UT_HOSTSIZE, UT_HOSTSIZE, l->ll_host,
155 (l->ll_tv.tv_sec) ? ctime((&l->ll_tv.tv_sec)) : "Never logged in\n");
161 fprintf(stderr, "usage: lastlogin [user ...]\n");