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 35 static 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 42 static char sccsid[] = "@(#)rwho.c 8.1 (Berkeley) 6/6/93"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/file.h> 50 #include <protocols/rwhod.h> 51 #include <dirent.h> 52 #include <err.h> 53 #include <langinfo.h> 54 #include <locale.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <time.h> 59 #include <unistd.h> 60 #include <utmp.h> 61 62 DIR *dirp; 63 64 struct whod wd; 65 int utmpcmp(); 66 #define NUSERS 1000 67 struct myutmp { 68 char myhost[sizeof(wd.wd_hostname)]; 69 int myidle; 70 struct outmp myutmp; 71 } myutmp[NUSERS]; 72 int nusers; 73 74 #define WHDRSIZE (sizeof (wd) - sizeof (wd.wd_we)) 75 /* 76 * this macro should be shared with ruptime. 77 */ 78 #define down(w,now) ((now) - (w)->wd_recvtime > 11 * 60) 79 80 time_t now; 81 int aflg; 82 83 static void usage __P((void)); 84 int utmpcmp __P((const void *, const void *)); 85 86 int 87 main(argc, argv) 88 int argc; 89 char **argv; 90 { 91 int ch; 92 struct dirent *dp; 93 int cc, width; 94 register struct whod *w = &wd; 95 register struct whoent *we; 96 register struct myutmp *mp; 97 int f, n, i; 98 int d_first; 99 100 (void) setlocale(LC_TIME, ""); 101 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 102 103 while ((ch = getopt(argc, argv, "a")) != -1) 104 switch((char)ch) { 105 case 'a': 106 aflg = 1; 107 break; 108 case '?': 109 default: 110 usage(); 111 } 112 argc -= optind; 113 argv += optind; 114 115 if (argc != 0) 116 usage(); 117 118 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) 119 err(1, "%s", _PATH_RWHODIR); 120 mp = myutmp; 121 (void)time(&now); 122 while ((dp = readdir(dirp))) { 123 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5)) 124 continue; 125 f = open(dp->d_name, O_RDONLY); 126 if (f < 0) 127 continue; 128 cc = read(f, (char *)&wd, sizeof (struct whod)); 129 if (cc < WHDRSIZE) { 130 (void) close(f); 131 continue; 132 } 133 if (down(w,now)) { 134 (void) close(f); 135 continue; 136 } 137 cc -= WHDRSIZE; 138 we = w->wd_we; 139 for (n = cc / sizeof (struct whoent); n > 0; n--) { 140 if (aflg == 0 && we->we_idle >= 60*60) { 141 we++; 142 continue; 143 } 144 if (nusers >= NUSERS) 145 errx(1, "too many users"); 146 mp->myutmp = we->we_utmp; mp->myidle = we->we_idle; 147 (void) strcpy(mp->myhost, w->wd_hostname); 148 nusers++; we++; mp++; 149 } 150 (void) close(f); 151 } 152 qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp); 153 mp = myutmp; 154 width = 0; 155 for (i = 0; i < nusers; i++) { 156 /* append one for the blank and use 8 for the out_line */ 157 int j = strlen(mp->myhost) + 1 + sizeof(mp->myutmp.out_line); 158 if (j > width) 159 width = j; 160 mp++; 161 } 162 mp = myutmp; 163 for (i = 0; i < nusers; i++) { 164 char buf[BUFSIZ], cbuf[80]; 165 166 strftime(cbuf, sizeof(cbuf), 167 d_first ? "%e %b %R" : "%b %e %R", 168 localtime((time_t *)&mp->myutmp.out_time)); 169 (void)sprintf(buf, "%s:%-.*s", mp->myhost, 170 sizeof(mp->myutmp.out_line), mp->myutmp.out_line); 171 printf("%-*.*s %-*s %s", 172 UT_NAMESIZE, sizeof(mp->myutmp.out_name), 173 mp->myutmp.out_name, 174 width, 175 buf, 176 cbuf); 177 mp->myidle /= 60; 178 if (mp->myidle) { 179 if (aflg) { 180 if (mp->myidle >= 100*60) 181 mp->myidle = 100*60 - 1; 182 if (mp->myidle >= 60) 183 printf(" %2d", mp->myidle / 60); 184 else 185 printf(" "); 186 } else 187 printf(" "); 188 printf(":%02d", mp->myidle % 60); 189 } 190 printf("\n"); 191 mp++; 192 } 193 exit(0); 194 } 195 196 197 static void 198 usage() 199 { 200 fprintf(stderr, "usage: rwho [-a]\n"); 201 exit(1); 202 } 203 204 #define MYUTMP(a) ((struct myutmp *)(a)) 205 206 int 207 utmpcmp(u1, u2) 208 const void *u1, *u2; 209 { 210 int rc; 211 212 rc = strncmp(MYUTMP(u1)->myutmp.out_name, MYUTMP(u2)->myutmp.out_name, 213 sizeof(MYUTMP(u2)->myutmp.out_name)); 214 if (rc) 215 return (rc); 216 rc = strcmp(MYUTMP(u1)->myhost, MYUTMP(u2)->myhost); 217 if (rc) 218 return (rc); 219 return (strncmp(MYUTMP(u1)->myutmp.out_line, MYUTMP(u2)->myutmp.out_line, 220 sizeof(MYUTMP(u2)->myutmp.out_line))); 221 } 222