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 * 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. 16 * 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 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1983, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)rwho.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 #endif /* not lint */ 41 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 #include <sys/param.h> 46 #include <sys/file.h> 47 48 #include <protocols/rwhod.h> 49 50 #include <dirent.h> 51 #include <err.h> 52 #include <langinfo.h> 53 #include <locale.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <time.h> 58 #include <timeconv.h> 59 #include <unistd.h> 60 61 DIR *dirp; 62 63 struct whod wd; 64 #define NUSERS 1000 65 struct myutmp { 66 char myhost[sizeof(wd.wd_hostname)]; 67 int myidle; 68 struct outmp myutmp; 69 } myutmp[NUSERS]; 70 int nusers; 71 72 #define WHDRSIZE (ssize_t)(sizeof (wd) - sizeof (wd.wd_we)) 73 /* 74 * this macro should be shared with ruptime. 75 */ 76 #define down(w,now) ((now) - (w)->wd_recvtime > 11 * 60) 77 78 time_t now; 79 int aflg; 80 81 static void usage(void); 82 int utmpcmp(const void *, const void *); 83 84 int 85 main(int argc, char *argv[]) 86 { 87 int ch; 88 struct dirent *dp; 89 int width; 90 ssize_t cc; 91 register struct whod *w = &wd; 92 register struct whoent *we; 93 register struct myutmp *mp; 94 int f, n, i; 95 int d_first; 96 97 (void) setlocale(LC_TIME, ""); 98 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 99 100 while ((ch = getopt(argc, argv, "a")) != -1) 101 switch((char)ch) { 102 case 'a': 103 aflg = 1; 104 break; 105 case '?': 106 default: 107 usage(); 108 } 109 argc -= optind; 110 argv += optind; 111 112 if (argc != 0) 113 usage(); 114 115 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) 116 err(1, "%s", _PATH_RWHODIR); 117 mp = myutmp; 118 (void)time(&now); 119 while ((dp = readdir(dirp))) { 120 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5)) 121 continue; 122 f = open(dp->d_name, O_RDONLY); 123 if (f < 0) 124 continue; 125 cc = read(f, (char *)&wd, sizeof (struct whod)); 126 if (cc < WHDRSIZE) { 127 (void) close(f); 128 continue; 129 } 130 if (down(w,now)) { 131 (void) close(f); 132 continue; 133 } 134 cc -= WHDRSIZE; 135 we = w->wd_we; 136 for (n = cc / sizeof (struct whoent); n > 0; n--) { 137 if (aflg == 0 && we->we_idle >= 60*60) { 138 we++; 139 continue; 140 } 141 if (nusers >= NUSERS) 142 errx(1, "too many users"); 143 mp->myutmp = we->we_utmp; mp->myidle = we->we_idle; 144 (void) strcpy(mp->myhost, w->wd_hostname); 145 nusers++; we++; mp++; 146 } 147 (void) close(f); 148 } 149 qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp); 150 mp = myutmp; 151 width = 0; 152 for (i = 0; i < nusers; i++) { 153 /* append one for the blank and use 8 for the out_line */ 154 int j = strlen(mp->myhost) + 1 + sizeof(mp->myutmp.out_line); 155 if (j > width) 156 width = j; 157 mp++; 158 } 159 mp = myutmp; 160 for (i = 0; i < nusers; i++) { 161 char buf[BUFSIZ], cbuf[80]; 162 time_t t = _int_to_time(mp->myutmp.out_time); 163 164 strftime(cbuf, sizeof(cbuf), 165 d_first ? "%e %b %R" : "%b %e %R", 166 localtime(&t)); 167 (void)sprintf(buf, "%s:%-.*s", mp->myhost, 168 (int)sizeof(mp->myutmp.out_line), mp->myutmp.out_line); 169 printf("%-*.*s %-*s %s", 170 (int)sizeof(mp->myutmp.out_name), 171 (int)sizeof(mp->myutmp.out_name), 172 mp->myutmp.out_name, 173 width, 174 buf, 175 cbuf); 176 mp->myidle /= 60; 177 if (mp->myidle) { 178 if (aflg) { 179 if (mp->myidle >= 100*60) 180 mp->myidle = 100*60 - 1; 181 if (mp->myidle >= 60) 182 printf(" %2d", mp->myidle / 60); 183 else 184 printf(" "); 185 } else 186 printf(" "); 187 printf(":%02d", mp->myidle % 60); 188 } 189 printf("\n"); 190 mp++; 191 } 192 exit(0); 193 } 194 195 196 static void 197 usage(void) 198 { 199 fprintf(stderr, "usage: rwho [-a]\n"); 200 exit(1); 201 } 202 203 #define MYUTMP(a) ((const struct myutmp *)(a)) 204 205 int 206 utmpcmp(const void *u1, const void *u2) 207 { 208 int rc; 209 210 rc = strncmp(MYUTMP(u1)->myutmp.out_name, MYUTMP(u2)->myutmp.out_name, 211 sizeof(MYUTMP(u2)->myutmp.out_name)); 212 if (rc) 213 return (rc); 214 rc = strcmp(MYUTMP(u1)->myhost, MYUTMP(u2)->myhost); 215 if (rc) 216 return (rc); 217 return (strncmp(MYUTMP(u1)->myutmp.out_line, MYUTMP(u2)->myutmp.out_line, 218 sizeof(MYUTMP(u2)->myutmp.out_line))); 219 } 220