11590Srgrimes/* 21590Srgrimes * Copyright (c) 1983, 1993, 1994 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 4. Neither the name of the University nor the names of its contributors 141590Srgrimes * may be used to endorse or promote products derived from this software 151590Srgrimes * without specific prior written permission. 161590Srgrimes * 171590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271590Srgrimes * SUCH DAMAGE. 281590Srgrimes */ 291590Srgrimes 301590Srgrimes#ifndef lint 3158620Scharnierstatic const char copyright[] = 321590Srgrimes"@(#) Copyright (c) 1983, 1993, 1994\n\ 331590Srgrimes The Regents of the University of California. All rights reserved.\n"; 341590Srgrimes#endif /* not lint */ 351590Srgrimes 361590Srgrimes#ifndef lint 3795617Smarkmstatic const char sccsid[] = "@(#)ruptime.c 8.2 (Berkeley) 4/5/94"; 381590Srgrimes#endif /* not lint */ 391590Srgrimes 4095617Smarkm#include <sys/cdefs.h> 4195617Smarkm__FBSDID("$FreeBSD: stable/11/usr.bin/ruptime/ruptime.c 359799 2020-04-11 07:46:38Z nyan $"); 4295617Smarkm 431590Srgrimes#include <sys/param.h> 441590Srgrimes 451590Srgrimes#include <protocols/rwhod.h> 461590Srgrimes 471590Srgrimes#include <dirent.h> 481590Srgrimes#include <err.h> 49200462Sdelphij#include <errno.h> 501590Srgrimes#include <fcntl.h> 511590Srgrimes#include <stdio.h> 521590Srgrimes#include <stdlib.h> 531590Srgrimes#include <string.h> 541590Srgrimes#include <time.h> 551590Srgrimes#include <unistd.h> 561590Srgrimes 57227178Sedstatic struct hs { 58226419Sed struct whod hs_wd; 591590Srgrimes int hs_nusers; 601590Srgrimes} *hs; 61226419Sed#define LEFTEARTH(h) (now - (h) > 4*24*60*60) 62226419Sed#define ISDOWN(h) (now - (h)->hs_wd.wd_recvtime > 11 * 60) 63226419Sed#define WHDRSIZE __offsetof(struct whod, wd_we) 641590Srgrimes 65227178Sedstatic size_t nhosts; 66227178Sedstatic time_t now; 67227178Sedstatic int rflg = 1; 68227178Sedstatic DIR *dirp; 691590Srgrimes 70227178Sedstatic int hscmp(const void *, const void *); 71227178Sedstatic char *interval(time_t, const char *); 72359798Snyanstatic int iwidth(int); 73227178Sedstatic int lcmp(const void *, const void *); 74227178Sedstatic void ruptime(const char *, int, int (*)(const void *, const void *)); 75227178Sedstatic int tcmp(const void *, const void *); 76227178Sedstatic int ucmp(const void *, const void *); 77227178Sedstatic void usage(void); 781590Srgrimes 791590Srgrimesint 8095617Smarkmmain(int argc, char *argv[]) 811590Srgrimes{ 8292921Simp int (*cmp)(const void *, const void *); 83111714Sjmallett int aflg, ch; 841590Srgrimes 851590Srgrimes aflg = 0; 861590Srgrimes cmp = hscmp; 8724360Simp while ((ch = getopt(argc, argv, "alrut")) != -1) 881590Srgrimes switch (ch) { 891590Srgrimes case 'a': 901590Srgrimes aflg = 1; 911590Srgrimes break; 921590Srgrimes case 'l': 931590Srgrimes cmp = lcmp; 941590Srgrimes break; 951590Srgrimes case 'r': 961590Srgrimes rflg = -1; 971590Srgrimes break; 981590Srgrimes case 't': 991590Srgrimes cmp = tcmp; 1001590Srgrimes break; 1011590Srgrimes case 'u': 1021590Srgrimes cmp = ucmp; 1031590Srgrimes break; 1048874Srgrimes default: 1051590Srgrimes usage(); 1061590Srgrimes } 1071590Srgrimes argc -= optind; 1081590Srgrimes argv += optind; 1091590Srgrimes 1101590Srgrimes if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) 1111590Srgrimes err(1, "%s", _PATH_RWHODIR); 1121590Srgrimes 113111714Sjmallett ruptime(*argv, aflg, cmp); 114111714Sjmallett while (*argv++ != NULL) { 115111714Sjmallett if (*argv == NULL) 116111714Sjmallett break; 117111714Sjmallett ruptime(*argv, aflg, cmp); 118111714Sjmallett } 119111714Sjmallett exit(0); 120111714Sjmallett} 121111714Sjmallett 122227178Sedstatic char * 123111714Sjmallettinterval(time_t tval, const char *updown) 124111714Sjmallett{ 125111714Sjmallett static char resbuf[32]; 126111714Sjmallett int days, hours, minutes; 127111714Sjmallett 128111714Sjmallett if (tval < 0) { 129226419Sed (void)snprintf(resbuf, sizeof(resbuf), "%s ??:??", updown); 130111714Sjmallett return (resbuf); 131111714Sjmallett } 132226419Sed /* Round to minutes. */ 133111714Sjmallett minutes = (tval + (60 - 1)) / 60; 134111714Sjmallett hours = minutes / 60; 135111714Sjmallett minutes %= 60; 136111714Sjmallett days = hours / 24; 137111714Sjmallett hours %= 24; 138111714Sjmallett if (days) 139111714Sjmallett (void)snprintf(resbuf, sizeof(resbuf), 140226419Sed "%s %4d+%02d:%02d", updown, days, hours, minutes); 141111714Sjmallett else 142111714Sjmallett (void)snprintf(resbuf, sizeof(resbuf), 143226419Sed "%s %2d:%02d", updown, hours, minutes); 144111714Sjmallett return (resbuf); 145111714Sjmallett} 146111714Sjmallett 147359798Snyan/* Width to print a small nonnegative integer. */ 148359798Snyanstatic int 149359798Snyaniwidth(int w) 150359798Snyan{ 151359798Snyan if (w < 10) 152359798Snyan return (1); 153359798Snyan if (w < 100) 154359798Snyan return (2); 155359798Snyan if (w < 1000) 156359798Snyan return (3); 157359798Snyan if (w < 10000) 158359798Snyan return (4); 159359798Snyan return (5); 160359798Snyan} 161359798Snyan 162111714Sjmallett#define HS(a) ((const struct hs *)(a)) 163111714Sjmallett 164111714Sjmallett/* Alphabetical comparison. */ 165227178Sedstatic int 166111714Sjmalletthscmp(const void *a1, const void *a2) 167111714Sjmallett{ 168111714Sjmallett return (rflg * 169226419Sed strcmp(HS(a1)->hs_wd.wd_hostname, HS(a2)->hs_wd.wd_hostname)); 170111714Sjmallett} 171111714Sjmallett 172111714Sjmallett/* Load average comparison. */ 173227178Sedstatic int 174111714Sjmallettlcmp(const void *a1, const void *a2) 175111714Sjmallett{ 176111714Sjmallett if (ISDOWN(HS(a1))) 177111714Sjmallett if (ISDOWN(HS(a2))) 178111714Sjmallett return (tcmp(a1, a2)); 179111714Sjmallett else 180111714Sjmallett return (rflg); 181111714Sjmallett else if (ISDOWN(HS(a2))) 182111714Sjmallett return (-rflg); 183111714Sjmallett else 184111714Sjmallett return (rflg * 185226419Sed (HS(a2)->hs_wd.wd_loadav[0] - HS(a1)->hs_wd.wd_loadav[0])); 186111714Sjmallett} 187111714Sjmallett 188227178Sedstatic void 189111714Sjmallettruptime(const char *host, int aflg, int (*cmp)(const void *, const void *)) 190111714Sjmallett{ 191111714Sjmallett struct hs *hsp; 192111714Sjmallett struct whod *wd; 193111714Sjmallett struct whoent *we; 194111714Sjmallett struct dirent *dp; 195359798Snyan int fd, hostnamewidth, i, loadavwidth[3], userswidth, w; 196111714Sjmallett size_t hspace; 197226419Sed ssize_t cc; 198111714Sjmallett 199111714Sjmallett rewinddir(dirp); 200111714Sjmallett hsp = NULL; 201359798Snyan hostnamewidth = 0; 202359798Snyan loadavwidth[0] = 4; 203359798Snyan loadavwidth[1] = 4; 204359798Snyan loadavwidth[2] = 4; 205359798Snyan userswidth = 1; 206177316Santoine (void)time(&now); 2071590Srgrimes for (nhosts = hspace = 0; (dp = readdir(dirp)) != NULL;) { 208111714Sjmallett if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5) != 0) 2091590Srgrimes continue; 2101590Srgrimes if ((fd = open(dp->d_name, O_RDONLY, 0)) < 0) { 2111590Srgrimes warn("%s", dp->d_name); 2121590Srgrimes continue; 2131590Srgrimes } 2141590Srgrimes 2151590Srgrimes if (nhosts == hspace) { 2161590Srgrimes if ((hs = 2171590Srgrimes realloc(hs, (hspace += 40) * sizeof(*hs))) == NULL) 2181590Srgrimes err(1, NULL); 2191590Srgrimes hsp = hs + nhosts; 2201590Srgrimes } 2211590Srgrimes 222226419Sed wd = &hsp->hs_wd; 223226419Sed cc = read(fd, wd, sizeof(*wd)); 224226419Sed (void)close(fd); 225226419Sed if (cc < (ssize_t)WHDRSIZE) 226226419Sed continue; 2271590Srgrimes 228359798Snyan if (host != NULL && strcasecmp(wd->wd_hostname, host) != 0) 229359798Snyan continue; 230226419Sed if (LEFTEARTH(wd->wd_recvtime)) 231226419Sed continue; 232226419Sed 233359798Snyan if (hostnamewidth < (int)strlen(wd->wd_hostname)) 234359798Snyan hostnamewidth = (int)strlen(wd->wd_hostname); 235359799Snyan 236359799Snyan if (!ISDOWN(hsp)) { 237359799Snyan for (i = 0; i < 3; i++) { 238359799Snyan w = iwidth(wd->wd_loadav[i] / 100) + 3; 239359799Snyan if (loadavwidth[i] < w) 240359799Snyan loadavwidth[i] = w; 241359799Snyan } 242359799Snyan for (hsp->hs_nusers = 0, we = &wd->wd_we[0]; 243359799Snyan (char *)(we + 1) <= (char *)wd + cc; we++) 244359799Snyan if (aflg || we->we_idle < 3600) 245359799Snyan ++hsp->hs_nusers; 246359799Snyan if (userswidth < iwidth(hsp->hs_nusers)) 247359799Snyan userswidth = iwidth(hsp->hs_nusers); 248359798Snyan } 2491590Srgrimes 2501590Srgrimes ++hsp; 2511590Srgrimes ++nhosts; 2521590Srgrimes } 253111714Sjmallett if (nhosts == 0) { 254111714Sjmallett if (host == NULL) 255111714Sjmallett errx(1, "no hosts in %s", _PATH_RWHODIR); 256111714Sjmallett else 257111714Sjmallett warnx("host %s not in %s", host, _PATH_RWHODIR); 258111714Sjmallett } 2591590Srgrimes 2601590Srgrimes qsort(hs, nhosts, sizeof(hs[0]), cmp); 261359798Snyan w = userswidth + loadavwidth[0] + loadavwidth[1] + loadavwidth[2]; 262359798Snyan if (hostnamewidth + w > 41) 263359798Snyan hostnamewidth = 41 - w; /* limit to 79 cols */ 26495617Smarkm for (i = 0; i < (int)nhosts; i++) { 2651590Srgrimes hsp = &hs[i]; 266226419Sed wd = &hsp->hs_wd; 2671590Srgrimes if (ISDOWN(hsp)) { 268359799Snyan (void)printf("%-*.*s %s\n", 269359798Snyan hostnamewidth, hostnamewidth, wd->wd_hostname, 270226419Sed interval(now - hsp->hs_wd.wd_recvtime, "down")); 2711590Srgrimes continue; 2721590Srgrimes } 2731590Srgrimes (void)printf( 274359798Snyan "%-*.*s %s, %*d user%s load %*.2f, %*.2f, %*.2f\n", 275359798Snyan hostnamewidth, hostnamewidth, wd->wd_hostname, 276226419Sed interval((time_t)wd->wd_sendtime - 277226419Sed (time_t)wd->wd_boottime, " up"), 278359798Snyan userswidth, hsp->hs_nusers, 2791590Srgrimes hsp->hs_nusers == 1 ? ", " : "s,", 280359798Snyan loadavwidth[0], wd->wd_loadav[0] / 100.0, 281359798Snyan loadavwidth[1], wd->wd_loadav[1] / 100.0, 282359798Snyan loadavwidth[2], wd->wd_loadav[2] / 100.0); 2831590Srgrimes } 284111714Sjmallett free(hs); 285111714Sjmallett hs = NULL; 2861590Srgrimes} 2871590Srgrimes 2881590Srgrimes/* Number of users comparison. */ 289227178Sedstatic int 29095617Smarkmucmp(const void *a1, const void *a2) 2911590Srgrimes{ 2921590Srgrimes if (ISDOWN(HS(a1))) 2931590Srgrimes if (ISDOWN(HS(a2))) 2941590Srgrimes return (tcmp(a1, a2)); 2951590Srgrimes else 2961590Srgrimes return (rflg); 2971590Srgrimes else if (ISDOWN(HS(a2))) 2981590Srgrimes return (-rflg); 2991590Srgrimes else 3001590Srgrimes return (rflg * (HS(a2)->hs_nusers - HS(a1)->hs_nusers)); 3011590Srgrimes} 3021590Srgrimes 3031590Srgrimes/* Uptime comparison. */ 304227178Sedstatic int 30595617Smarkmtcmp(const void *a1, const void *a2) 3061590Srgrimes{ 3071590Srgrimes return (rflg * ( 308226419Sed (ISDOWN(HS(a2)) ? HS(a2)->hs_wd.wd_recvtime - now 309226419Sed : HS(a2)->hs_wd.wd_sendtime - HS(a2)->hs_wd.wd_boottime) 3101590Srgrimes - 311226419Sed (ISDOWN(HS(a1)) ? HS(a1)->hs_wd.wd_recvtime - now 312226419Sed : HS(a1)->hs_wd.wd_sendtime - HS(a1)->hs_wd.wd_boottime) 3131590Srgrimes )); 3141590Srgrimes} 3151590Srgrimes 316227178Sedstatic void 31795617Smarkmusage(void) 3181590Srgrimes{ 319146466Sru (void)fprintf(stderr, "usage: ruptime [-alrtu] [host ...]\n"); 3201590Srgrimes exit(1); 3211590Srgrimes} 322