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 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)rwho.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.bin/rwho/rwho.c,v 1.13.2.1 2002/03/12 19:49:09 phantom Exp $ 36 * $DragonFly: src/usr.bin/rwho/rwho.c,v 1.3 2003/11/03 19:31:33 eirikn Exp $ 37 */ 38 39 #include <sys/param.h> 40 #include <sys/file.h> 41 #include <protocols/rwhod.h> 42 #include <dirent.h> 43 #include <err.h> 44 #include <langinfo.h> 45 #include <locale.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <time.h> 50 #include <unistd.h> 51 #include <utmp.h> 52 53 DIR *dirp; 54 55 struct whod wd; 56 int utmpcmp(); 57 #define NUSERS 1000 58 struct myutmp { 59 char myhost[sizeof(wd.wd_hostname)]; 60 int myidle; 61 struct outmp myutmp; 62 } myutmp[NUSERS]; 63 int nusers; 64 65 #define WHDRSIZE (sizeof (wd) - sizeof (wd.wd_we)) 66 /* 67 * this macro should be shared with ruptime. 68 */ 69 #define down(w,now) ((now) - (w)->wd_recvtime > 11 * 60) 70 71 time_t now; 72 int aflg; 73 74 static void usage(void); 75 int utmpcmp(const void *, const void *); 76 77 int 78 main(argc, argv) 79 int argc; 80 char **argv; 81 { 82 int ch; 83 struct dirent *dp; 84 int cc, width; 85 register struct whod *w = &wd; 86 register struct whoent *we; 87 register struct myutmp *mp; 88 int f, n, i; 89 int d_first; 90 91 (void) setlocale(LC_TIME, ""); 92 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 93 94 while ((ch = getopt(argc, argv, "a")) != -1) 95 switch((char)ch) { 96 case 'a': 97 aflg = 1; 98 break; 99 case '?': 100 default: 101 usage(); 102 } 103 argc -= optind; 104 argv += optind; 105 106 if (argc != 0) 107 usage(); 108 109 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) 110 err(1, "%s", _PATH_RWHODIR); 111 mp = myutmp; 112 (void)time(&now); 113 while ((dp = readdir(dirp))) { 114 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5)) 115 continue; 116 f = open(dp->d_name, O_RDONLY); 117 if (f < 0) 118 continue; 119 cc = read(f, (char *)&wd, sizeof (struct whod)); 120 if (cc < WHDRSIZE) { 121 (void) close(f); 122 continue; 123 } 124 if (down(w,now)) { 125 (void) close(f); 126 continue; 127 } 128 cc -= WHDRSIZE; 129 we = w->wd_we; 130 for (n = cc / sizeof (struct whoent); n > 0; n--) { 131 if (aflg == 0 && we->we_idle >= 60*60) { 132 we++; 133 continue; 134 } 135 if (nusers >= NUSERS) 136 errx(1, "too many users"); 137 mp->myutmp = we->we_utmp; mp->myidle = we->we_idle; 138 (void) strcpy(mp->myhost, w->wd_hostname); 139 nusers++; we++; mp++; 140 } 141 (void) close(f); 142 } 143 qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp); 144 mp = myutmp; 145 width = 0; 146 for (i = 0; i < nusers; i++) { 147 /* append one for the blank and use 8 for the out_line */ 148 int j = strlen(mp->myhost) + 1 + sizeof(mp->myutmp.out_line); 149 if (j > width) 150 width = j; 151 mp++; 152 } 153 mp = myutmp; 154 for (i = 0; i < nusers; i++) { 155 char buf[BUFSIZ], cbuf[80]; 156 157 strftime(cbuf, sizeof(cbuf), 158 d_first ? "%e %b %R" : "%b %e %R", 159 localtime((time_t *)&mp->myutmp.out_time)); 160 (void)sprintf(buf, "%s:%-.*s", mp->myhost, 161 sizeof(mp->myutmp.out_line), mp->myutmp.out_line); 162 printf("%-*.*s %-*s %s", 163 UT_NAMESIZE, sizeof(mp->myutmp.out_name), 164 mp->myutmp.out_name, 165 width, 166 buf, 167 cbuf); 168 mp->myidle /= 60; 169 if (mp->myidle) { 170 if (aflg) { 171 if (mp->myidle >= 100*60) 172 mp->myidle = 100*60 - 1; 173 if (mp->myidle >= 60) 174 printf(" %2d", mp->myidle / 60); 175 else 176 printf(" "); 177 } else 178 printf(" "); 179 printf(":%02d", mp->myidle % 60); 180 } 181 printf("\n"); 182 mp++; 183 } 184 exit(0); 185 } 186 187 188 static void 189 usage() 190 { 191 fprintf(stderr, "usage: rwho [-a]\n"); 192 exit(1); 193 } 194 195 #define MYUTMP(a) ((struct myutmp *)(a)) 196 197 int 198 utmpcmp(u1, u2) 199 const void *u1, *u2; 200 { 201 int rc; 202 203 rc = strncmp(MYUTMP(u1)->myutmp.out_name, MYUTMP(u2)->myutmp.out_name, 204 sizeof(MYUTMP(u2)->myutmp.out_name)); 205 if (rc) 206 return (rc); 207 rc = strcmp(MYUTMP(u1)->myhost, MYUTMP(u2)->myhost); 208 if (rc) 209 return (rc); 210 return (strncmp(MYUTMP(u1)->myutmp.out_line, MYUTMP(u2)->myutmp.out_line, 211 sizeof(MYUTMP(u2)->myutmp.out_line))); 212 } 213