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 #include <utmp.h> 65 66 DIR *dirp; 67 68 struct whod wd; 69 #define NUSERS 1000 70 struct myutmp { 71 char myhost[sizeof(wd.wd_hostname)]; 72 int myidle; 73 struct outmp myutmp; 74 } myutmp[NUSERS]; 75 int nusers; 76 77 #define WHDRSIZE (ssize_t)(sizeof (wd) - sizeof (wd.wd_we)) 78 /* 79 * this macro should be shared with ruptime. 80 */ 81 #define down(w,now) ((now) - (w)->wd_recvtime > 11 * 60) 82 83 time_t now; 84 int aflg; 85 86 static void usage(void); 87 int utmpcmp(const void *, const void *); 88 89 int 90 main(int argc, char *argv[]) 91 { 92 int ch; 93 struct dirent *dp; 94 int width; 95 ssize_t cc; 96 register struct whod *w = &wd; 97 register struct whoent *we; 98 register struct myutmp *mp; 99 int f, n, i; 100 int d_first; 101 102 (void) setlocale(LC_TIME, ""); 103 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 104 105 while ((ch = getopt(argc, argv, "a")) != -1) 106 switch((char)ch) { 107 case 'a': 108 aflg = 1; 109 break; 110 case '?': 111 default: 112 usage(); 113 } 114 argc -= optind; 115 argv += optind; 116 117 if (argc != 0) 118 usage(); 119 120 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) 121 err(1, "%s", _PATH_RWHODIR); 122 mp = myutmp; 123 (void)time(&now); 124 while ((dp = readdir(dirp))) { 125 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5)) 126 continue; 127 f = open(dp->d_name, O_RDONLY); 128 if (f < 0) 129 continue; 130 cc = read(f, (char *)&wd, sizeof (struct whod)); 131 if (cc < WHDRSIZE) { 132 (void) close(f); 133 continue; 134 } 135 if (down(w,now)) { 136 (void) close(f); 137 continue; 138 } 139 cc -= WHDRSIZE; 140 we = w->wd_we; 141 for (n = cc / sizeof (struct whoent); n > 0; n--) { 142 if (aflg == 0 && we->we_idle >= 60*60) { 143 we++; 144 continue; 145 } 146 if (nusers >= NUSERS) 147 errx(1, "too many users"); 148 mp->myutmp = we->we_utmp; mp->myidle = we->we_idle; 149 (void) strcpy(mp->myhost, w->wd_hostname); 150 nusers++; we++; mp++; 151 } 152 (void) close(f); 153 } 154 qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp); 155 mp = myutmp; 156 width = 0; 157 for (i = 0; i < nusers; i++) { 158 /* append one for the blank and use 8 for the out_line */ 159 int j = strlen(mp->myhost) + 1 + sizeof(mp->myutmp.out_line); 160 if (j > width) 161 width = j; 162 mp++; 163 } 164 mp = myutmp; 165 for (i = 0; i < nusers; i++) { 166 char buf[BUFSIZ], cbuf[80]; 167 time_t t = _int_to_time(mp->myutmp.out_time); 168 169 strftime(cbuf, sizeof(cbuf), 170 d_first ? "%e %b %R" : "%b %e %R", 171 localtime(&t)); 172 (void)sprintf(buf, "%s:%-.*s", mp->myhost, 173 sizeof(mp->myutmp.out_line), mp->myutmp.out_line); 174 printf("%-*.*s %-*s %s", 175 UT_NAMESIZE, sizeof(mp->myutmp.out_name), 176 mp->myutmp.out_name, 177 width, 178 buf, 179 cbuf); 180 mp->myidle /= 60; 181 if (mp->myidle) { 182 if (aflg) { 183 if (mp->myidle >= 100*60) 184 mp->myidle = 100*60 - 1; 185 if (mp->myidle >= 60) 186 printf(" %2d", mp->myidle / 60); 187 else 188 printf(" "); 189 } else 190 printf(" "); 191 printf(":%02d", mp->myidle % 60); 192 } 193 printf("\n"); 194 mp++; 195 } 196 exit(0); 197 } 198 199 200 static void 201 usage(void) 202 { 203 fprintf(stderr, "usage: rwho [-a]\n"); 204 exit(1); 205 } 206 207 #define MYUTMP(a) ((const struct myutmp *)(a)) 208 209 int 210 utmpcmp(const void *u1, const void *u2) 211 { 212 int rc; 213 214 rc = strncmp(MYUTMP(u1)->myutmp.out_name, MYUTMP(u2)->myutmp.out_name, 215 sizeof(MYUTMP(u2)->myutmp.out_name)); 216 if (rc) 217 return (rc); 218 rc = strcmp(MYUTMP(u1)->myhost, MYUTMP(u2)->myhost); 219 if (rc) 220 return (rc); 221 return (strncmp(MYUTMP(u1)->myutmp.out_line, MYUTMP(u2)->myutmp.out_line, 222 sizeof(MYUTMP(u2)->myutmp.out_line))); 223 } 224