rwho.tproj/rwho.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1983, 1993
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. All advertising materials mentioning features or use of this software
  37  *    must display the following acknowledgement:
  38  *      This product includes software developed by the University of
  39  *      California, Berkeley and its contributors.
  40  * 4. Neither the name of the University nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  */
  56
  57
  58 #ifndef lint
  59 static char copyright[] =
  60 "@(#) Copyright (c) 1983, 1993\n\
  61         The Regents of the University of California.  All rights reserved.\n";
  62 #endif /* not lint */
  63
  64 #include <sys/param.h>
  65 #include <sys/dir.h>
  66 #include <sys/file.h>
  67 #include <protocols/rwhod.h>
  68 #include <stdio.h>
  69
  70 DIR     *dirp;
  71
  72 struct  whod wd;
  73 int     utmpcmp();
  74 #define NUSERS  1000
  75 struct  myutmp {
  76         char    myhost[MAXHOSTNAMELEN];
  77         int     myidle;
  78         struct  outmp myutmp;
  79 } myutmp[NUSERS];
  80 int     nusers;
  81
  82 #define WHDRSIZE        (sizeof (wd) - sizeof (wd.wd_we))
  83 /*
  84  * this macro should be shared with ruptime.
  85  */
  86 #define down(w,now)     ((now) - (w)->wd_recvtime > 11 * 60)
  87
  88 char    *ctime(), *strcpy();
  89 time_t  now;
  90 int     aflg;
  91
  92 main(argc, argv)
  93         int argc;
  94         char **argv;
  95 {
  96         extern char *optarg;
  97         extern int optind;
  98         int ch;
  99         struct direct *dp;
 100         int cc, width;
 101         register struct whod *w = &wd;
 102         register struct whoent *we;
 103         register struct myutmp *mp;
 104         int f, n, i;
 105         time_t time();
 106
 107         while ((ch = getopt(argc, argv, "a")) != EOF)
 108                 switch((char)ch) {
 109                 case 'a':
 110                         aflg = 1;
 111                         break;
 112                 case '?':
 113                 default:
 114                         fprintf(stderr, "usage: rwho [-a]\n");
 115                         exit(1);
 116                 }
 117         if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) {
 118                 perror(_PATH_RWHODIR);
 119                 exit(1);
 120         }
 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                                 printf("too many users\n");
 147                                 exit(1);
 148                         }
 149                         mp->myutmp = we->we_utmp; mp->myidle = we->we_idle;
 150                         (void) strcpy(mp->myhost, w->wd_hostname);
 151                         nusers++; we++; mp++;
 152                 }
 153                 (void) close(f);
 154         }
 155         qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp);
 156         mp = myutmp;
 157         width = 0;
 158         for (i = 0; i < nusers; i++) {
 159                 int j = strlen(mp->myhost) + 1 + strlen(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];
 167                 (void)sprintf(buf, "%s:%s", mp->myhost, mp->myutmp.out_line);
 168                 printf("%-8.8s %-*s %.12s",
 169                    mp->myutmp.out_name,
 170                    width,
 171                    buf,
 172                    ctime((time_t *)&mp->myutmp.out_time)+4);
 173                 mp->myidle /= 60;
 174                 if (mp->myidle) {
 175                         if (aflg) {
 176                                 if (mp->myidle >= 100*60)
 177                                         mp->myidle = 100*60 - 1;
 178                                 if (mp->myidle >= 60)
 179                                         printf(" %2d", mp->myidle / 60);
 180                                 else
 181                                         printf("   ");
 182                         } else
 183                                 printf(" ");
 184                         printf(":%02d", mp->myidle % 60);
 185                 }
 186                 printf("\n");
 187                 mp++;
 188         }
 189         exit(0);
 190 }
 191
 192 utmpcmp(u1, u2)
 193         struct myutmp *u1, *u2;
 194 {
 195         int rc;
 196
 197         rc = strncmp(u1->myutmp.out_name, u2->myutmp.out_name, 8);
 198         if (rc)
 199                 return (rc);
 200         rc = strncmp(u1->myhost, u2->myhost, 8);
 201         if (rc)
 202                 return (rc);
 203         return (strncmp(u1->myutmp.out_line, u2->myutmp.out_line, 8));
 204 }