2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)rwho.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.bin/rwho/rwho.c,v 1.13.2.1 2002/03/12 19:49:09 phantom Exp $
32 * $DragonFly: src/usr.bin/rwho/rwho.c,v 1.5 2008/10/16 01:52:33 swildner Exp $
35 #include <sys/param.h>
38 #include <protocols/rwhod.h>
56 char myhost[sizeof(wd.wd_hostname)];
61 #define WHDRSIZE (sizeof (wd) - sizeof (wd.wd_we))
63 * this macro should be shared with ruptime.
65 #define down(w,now) ((now) - (w)->wd_recvtime > 11 * 60)
67 static void usage(void);
68 static int utmpcmp(const void *, const void *);
71 main(int argc, char **argv)
78 int width, d_first, aflg;
85 setlocale(LC_TIME, "");
86 d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
88 while ((ch = getopt(argc, argv, "a")) != -1)
103 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL)
104 err(1, "%s", _PATH_RWHODIR);
107 while ((dp = readdir(dirp))) {
108 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5))
110 f = open(dp->d_name, O_RDONLY);
113 cc = read(f, (char *)&wd, sizeof (struct whod));
124 for (n = cc / sizeof (struct whoent); n > 0; n--) {
125 if (aflg == 0 && we->we_idle >= 60*60) {
129 if (nusers >= NUSERS)
130 errx(1, "too many users");
131 mp->myutmp = we->we_utmp; mp->myidle = we->we_idle;
132 strcpy(mp->myhost, w->wd_hostname);
133 nusers++; we++; mp++;
137 qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp);
140 for (i = 0; i < nusers; i++) {
141 /* append one for the blank and use 8 for the out_line */
142 int j = strlen(mp->myhost) + 1 + sizeof(mp->myutmp.out_line);
148 for (i = 0; i < nusers; i++) {
149 char buf[BUFSIZ], cbuf[80];
151 strftime(cbuf, sizeof(cbuf),
152 d_first ? "%e %b %R" : "%b %e %R",
153 localtime((time_t *)&mp->myutmp.out_time));
154 sprintf(buf, "%s:%-.*s", mp->myhost,
155 (int)sizeof(mp->myutmp.out_line), mp->myutmp.out_line);
156 printf("%-*.*s %-*s %s",
157 UT_NAMESIZE, (int)sizeof(mp->myutmp.out_name),
165 if (mp->myidle >= 100*60)
166 mp->myidle = 100*60 - 1;
167 if (mp->myidle >= 60)
168 printf(" %2d", mp->myidle / 60);
173 printf(":%02d", mp->myidle % 60);
185 fprintf(stderr, "usage: rwho [-a]\n");
189 #define MYUTMP(a) ((const struct myutmp *)(a))
192 utmpcmp(const void *u1, const void *u2)
196 rc = strncmp(MYUTMP(u1)->myutmp.out_name, MYUTMP(u2)->myutmp.out_name,
197 sizeof(MYUTMP(u2)->myutmp.out_name));
200 rc = strcmp(MYUTMP(u1)->myhost, MYUTMP(u2)->myhost);
203 return (strncmp(MYUTMP(u1)->myutmp.out_line, MYUTMP(u2)->myutmp.out_line,
204 sizeof(MYUTMP(u2)->myutmp.out_line)));