1/* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. 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 by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1983, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)rwho.c 8.1 (Berkeley) 6/6/93"; 43#endif 44#endif /* not lint */ 45 46#include <sys/cdefs.h> 47__FBSDID("$FreeBSD: src/usr.bin/rwho/rwho.c,v 1.18 2002/07/01 16:40:33 markm Exp $"); 48 49#include <sys/param.h> 50#include <sys/file.h> 51 52#include <protocols/rwhod.h> 53 54#include <dirent.h> 55#include <err.h> 56#include <langinfo.h> 57#include <locale.h> 58#include <stdio.h> 59#include <stdlib.h> 60#include <string.h> 61#include <time.h> 62#include <timeconv.h> 63#include <unistd.h> 64#ifdef __APPLE__ 65#define UT_NAMESIZE 8 66#else 67#include <utmp.h> 68#endif 69 70DIR *dirp; 71 72struct whod wd; 73#define NUSERS 1000 74struct myutmp { 75 char myhost[sizeof(wd.wd_hostname)]; 76 int myidle; 77 struct outmp myutmp; 78} myutmp[NUSERS]; 79int nusers; 80 81#define WHDRSIZE (ssize_t)(sizeof (wd) - sizeof (wd.wd_we)) 82/* 83 * this macro should be shared with ruptime. 84 */ 85#define down(w,now) ((now) - (w)->wd_recvtime > 11 * 60) 86 87time_t now; 88int aflg; 89 90static void usage(void); 91int utmpcmp(const void *, const void *); 92 93int 94main(int argc, char *argv[]) 95{ 96 int ch; 97 struct dirent *dp; 98 int width; 99 ssize_t cc; 100 register struct whod *w = &wd; 101 register struct whoent *we; 102 register struct myutmp *mp; 103 int f, n, i; 104 int d_first; 105 106 (void) setlocale(LC_TIME, ""); 107 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 108 109 while ((ch = getopt(argc, argv, "a")) != -1) 110 switch((char)ch) { 111 case 'a': 112 aflg = 1; 113 break; 114 case '?': 115 default: 116 usage(); 117 } 118 argc -= optind; 119 argv += optind; 120 121 if (argc != 0) 122 usage(); 123 124 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) 125 err(1, "%s", _PATH_RWHODIR); 126 mp = myutmp; 127 (void)time(&now); 128 while ((dp = readdir(dirp))) { 129 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5)) 130 continue; 131 f = open(dp->d_name, O_RDONLY); 132 if (f < 0) 133 continue; 134 cc = read(f, (char *)&wd, sizeof (struct whod)); 135 if (cc < WHDRSIZE) { 136 (void) close(f); 137 continue; 138 } 139 if (down(w,now)) { 140 (void) close(f); 141 continue; 142 } 143 cc -= WHDRSIZE; 144 we = w->wd_we; 145 for (n = cc / sizeof (struct whoent); n > 0; n--) { 146 if (aflg == 0 && we->we_idle >= 60*60) { 147 we++; 148 continue; 149 } 150 if (nusers >= NUSERS) 151 errx(1, "too many users"); 152 mp->myutmp = we->we_utmp; mp->myidle = we->we_idle; 153 (void) strcpy(mp->myhost, w->wd_hostname); 154 nusers++; we++; mp++; 155 } 156 (void) close(f); 157 } 158 qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp); 159 mp = myutmp; 160 width = 0; 161 for (i = 0; i < nusers; i++) { 162 /* append one for the blank and use 8 for the out_line */ 163 int j = strlen(mp->myhost) + 1 + sizeof(mp->myutmp.out_line); 164 if (j > width) 165 width = j; 166 mp++; 167 } 168 mp = myutmp; 169 for (i = 0; i < nusers; i++) { 170 char buf[BUFSIZ], cbuf[80]; 171 time_t t = _int_to_time(mp->myutmp.out_time); 172 173 strftime(cbuf, sizeof(cbuf), 174 d_first ? "%e %b %R" : "%b %e %R", 175 localtime(&t)); 176 (void)sprintf(buf, "%s:%-.*s", mp->myhost, 177 (int)sizeof(mp->myutmp.out_line), mp->myutmp.out_line); 178 printf("%-*.*s %-*s %s", 179 UT_NAMESIZE, (int)sizeof(mp->myutmp.out_name), 180 mp->myutmp.out_name, 181 width, 182 buf, 183 cbuf); 184 mp->myidle /= 60; 185 if (mp->myidle) { 186 if (aflg) { 187 if (mp->myidle >= 100*60) 188 mp->myidle = 100*60 - 1; 189 if (mp->myidle >= 60) 190 printf(" %2d", mp->myidle / 60); 191 else 192 printf(" "); 193 } else 194 printf(" "); 195 printf(":%02d", mp->myidle % 60); 196 } 197 printf("\n"); 198 mp++; 199 } 200 exit(0); 201} 202 203 204static void 205usage(void) 206{ 207 fprintf(stderr, "usage: rwho [-a]\n"); 208 exit(1); 209} 210 211#define MYUTMP(a) ((const struct myutmp *)(a)) 212 213int 214utmpcmp(const void *u1, const void *u2) 215{ 216 int rc; 217 218 rc = strncmp(MYUTMP(u1)->myutmp.out_name, MYUTMP(u2)->myutmp.out_name, 219 sizeof(MYUTMP(u2)->myutmp.out_name)); 220 if (rc) 221 return (rc); 222 rc = strcmp(MYUTMP(u1)->myhost, MYUTMP(u2)->myhost); 223 if (rc) 224 return (rc); 225 return (strncmp(MYUTMP(u1)->myutmp.out_line, MYUTMP(u2)->myutmp.out_line, 226 sizeof(MYUTMP(u2)->myutmp.out_line))); 227} 228