usr.sbin/rtsold/dump.c

   1 /*      $NetBSD: dump.c,v 1.8 2004/01/03 01:40:31 itojun Exp $  */
   2 /*      $KAME: dump.c,v 1.10 2002/05/31 10:10:03 itojun Exp $   */
   3
   4 /*
   5  * Copyright (C) 1999 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include <sys/types.h>
  34 #include <sys/time.h>
  35 #include <sys/socket.h>
  36
  37 #include <net/if.h>
  38 #include <netinet/in.h>
  39 #include <netinet/icmp6.h>
  40
  41 #include <syslog.h>
  42 #include <time.h>
  43 #include <stdio.h>
  44 #include <string.h>
  45 #include <errno.h>
  46
  47 #include "rtsold.h"
  48
  49 static FILE *fp;
  50
  51 extern struct ifinfo *iflist;
  52
  53 static void dump_interface_status __P((void));
  54 static const char *sec2str __P((time_t));
  55 const char *ifstatstr[] = {"IDLE", "DELAY", "PROBE", "DOWN", "TENTATIVE"};
  56
  57 static void
  58 dump_interface_status(void)
  59 {
  60         struct ifinfo *ifinfo;
  61         struct timeval now;
  62
  63         gettimeofday(&now, NULL);
  64
  65         for (ifinfo = iflist; ifinfo; ifinfo = ifinfo->next) {
  66                 fprintf(fp, "Interface %s\n", ifinfo->ifname);
  67                 fprintf(fp, "  probe interval: ");
  68                 if (ifinfo->probeinterval) {
  69                         fprintf(fp, "%d\n", ifinfo->probeinterval);
  70                         fprintf(fp, "  probe timer: %d\n", ifinfo->probetimer);
  71                 } else {
  72                         fprintf(fp, "infinity\n");
  73                         fprintf(fp, "  no probe timer\n");
  74                 }
  75                 fprintf(fp, "  interface status: %s\n",
  76                     ifinfo->active > 0 ? "active" : "inactive");
  77                 fprintf(fp, "  rtsold status: %s\n", ifstatstr[ifinfo->state]);
  78                 fprintf(fp, "  carrier detection: %s\n",
  79                     ifinfo->mediareqok ? "available" : "unavailable");
  80                 fprintf(fp, "  probes: %d, dadcount = %d\n",
  81                     ifinfo->probes, ifinfo->dadcount);
  82                 if (ifinfo->timer.tv_sec == tm_max.tv_sec &&
  83                     ifinfo->timer.tv_usec == tm_max.tv_usec)
  84                         fprintf(fp, "  no timer\n");
  85                 else {
  86                         fprintf(fp, "  timer: interval=%d:%d, expire=%s\n",
  87                             (int)ifinfo->timer.tv_sec,
  88                             (int)ifinfo->timer.tv_usec,
  89                             (ifinfo->expire.tv_sec < now.tv_sec) ? "expired"
  90                             : sec2str(ifinfo->expire.tv_sec - now.tv_sec));
  91                 }
  92                 fprintf(fp, "  number of valid RAs: %d\n", ifinfo->racnt);
  93         }
  94 }
  95
  96 void
  97 rtsold_dump_file(const char *dumpfile)
  98 {
  99         if ((fp = fopen(dumpfile, "w")) == NULL) {
 100                 warnmsg(LOG_WARNING, __func__, "open a dump file(%s): %s",
 101                     dumpfile, strerror(errno));
 102                 return;
 103         }
 104         dump_interface_status();
 105         fclose(fp);
 106 }
 107
 108 static const char *
 109 sec2str(time_t total)
 110 {
 111         static char result[256];
 112         int days, hours, mins, secs;
 113         int first = 1;
 114         char *p = result;
 115         char *ep = &result[sizeof(result)];
 116         int n;
 117
 118         days = total / 3600 / 24;
 119         hours = (total / 3600) % 24;
 120         mins = (total / 60) % 60;
 121         secs = total % 60;
 122
 123         if (days) {
 124                 first = 0;
 125                 n = snprintf(p, ep - p, "%dd", days);
 126                 if (n < 0 || n >= ep - p)
 127                         return "?";
 128                 p += n;
 129         }
 130         if (!first || hours) {
 131                 first = 0;
 132                 n = snprintf(p, ep - p, "%dh", hours);
 133                 if (n < 0 || n >= ep - p)
 134                         return "?";
 135                 p += n;
 136         }
 137         if (!first || mins) {
 138                 first = 0;
 139                 n = snprintf(p, ep - p, "%dm", mins);
 140                 if (n < 0 || n >= ep - p)
 141                         return "?";
 142                 p += n;
 143         }
 144         snprintf(p, ep - p, "%ds", secs);
 145         return(result);
 146 }