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 #endif /* not lint */ 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 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 65 DIR *dirp; 66 67 struct whod wd; 68 #define NUSERS 1000 69 struct myutmp { 70 char myhost[sizeof(wd.wd_hostname)]; 71 int myidle; 72 struct outmp myutmp; 73 } myutmp[NUSERS]; 74 int nusers; 75 76 #define WHDRSIZE (ssize_t)(sizeof (wd) - sizeof (wd.wd_we)) 77 /* 78 * this macro should be shared with ruptime. 79 */ 80 #define down(w,now) ((now) - (w)->wd_recvtime > 11 * 60) 81 82 time_t now; 83 int aflg; 84 85 static void usage(void); 86 int utmpcmp(const void *, const void *); 87 88 int 89 main(int argc, char *argv[]) 90 { 91 int ch; 92 struct dirent *dp; 93 int width; 94 ssize_t cc; 95 register struct whod *w = &wd; 96 register struct whoent *we; 97 register struct myutmp *mp; 98 int f, n, i; 99 int d_first; 100 101 (void) setlocale(LC_TIME, ""); 102 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 103 104 while ((ch = getopt(argc, argv, "a")) != -1) 105 switch((char)ch) { 106 case 'a': 107 aflg = 1; 108 break; 109 case '?': 110 default: 111 usage(); 112 } 113 argc -= optind; 114 argv += optind; 115 116 if (argc != 0) 117 usage(); 118 119 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) 120 err(1, "%s", _PATH_RWHODIR); 121 mp = myutmp; 122 (void)time(&now); 123 while ((dp = readdir(dirp))) { 124 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5)) 125 continue; 126 f = open(dp->d_name, O_RDONLY); 127 if (f < 0) 128 continue; 129 cc = read(f, (char *)&wd, sizeof (struct whod)); 130 if (cc < WHDRSIZE) { 131 (void) close(f); 132 continue; 133 } 134 if (down(w,now)) { 135 (void) close(f); 136 continue; 137 } 138 cc -= WHDRSIZE; 139 we = w->wd_we; 140 for (n = cc / sizeof (struct whoent); n > 0; n--) { 141 if (aflg == 0 && we->we_idle >= 60*60) { 142 we++; 143 continue; 144 } 145 if (nusers >= NUSERS) 146 errx(1, "too many users"); 147 mp->myutmp = we->we_utmp; mp->myidle = we->we_idle; 148 (void) strcpy(mp->myhost, w->wd_hostname); 149 nusers++; we++; mp++; 150 } 151 (void) close(f); 152 } 153 qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp); 154 mp = myutmp; 155 width = 0; 156 for (i = 0; i < nusers; i++) { 157 /* append one for the blank and use 8 for the out_line */ 158 int j = strlen(mp->myhost) + 1 + sizeof(mp->myutmp.out_line); 159 if (j > width) 160 width = j; 161 mp++; 162 } 163 mp = myutmp; 164 for (i = 0; i < nusers; i++) { 165 char buf[BUFSIZ], cbuf[80]; 166 time_t t = _int_to_time(mp->myutmp.out_time); 167 168 strftime(cbuf, sizeof(cbuf), 169 d_first ? "%e %b %R" : "%b %e %R", 170 localtime(&t)); 171 (void)sprintf(buf, "%s:%-.*s", mp->myhost, 172 sizeof(mp->myutmp.out_line), mp->myutmp.out_line); 173 printf("%-*.*s %-*s %s", 174 sizeof(mp->myutmp.out_name), sizeof(mp->myutmp.out_name), 175 mp->myutmp.out_name, 176 width, 177 buf, 178 cbuf); 179 mp->myidle /= 60; 180 if (mp->myidle) { 181 if (aflg) { 182 if (mp->myidle >= 100*60) 183 mp->myidle = 100*60 - 1; 184 if (mp->myidle >= 60) 185 printf(" %2d", mp->myidle / 60); 186 else 187 printf(" "); 188 } else 189 printf(" "); 190 printf(":%02d", mp->myidle % 60); 191 } 192 printf("\n"); 193 mp++; 194 } 195 exit(0); 196 } 197 198 199 static void 200 usage(void) 201 { 202 fprintf(stderr, "usage: rwho [-a]\n"); 203 exit(1); 204 } 205 206 #define MYUTMP(a) ((const struct myutmp *)(a)) 207 208 int 209 utmpcmp(const void *u1, const void *u2) 210 { 211 int rc; 212 213 rc = strncmp(MYUTMP(u1)->myutmp.out_name, MYUTMP(u2)->myutmp.out_name, 214 sizeof(MYUTMP(u2)->myutmp.out_name)); 215 if (rc) 216 return (rc); 217 rc = strcmp(MYUTMP(u1)->myhost, MYUTMP(u2)->myhost); 218 if (rc) 219 return (rc); 220 return (strncmp(MYUTMP(u1)->myutmp.out_line, MYUTMP(u2)->myutmp.out_line, 221 sizeof(MYUTMP(u2)->myutmp.out_line))); 222 } 223