usr.sbin/rtsold/dump.c

   1 /*      $KAME: dump.c,v 1.13 2003/10/05 00:09:36 itojun Exp $   */
   2
   3 /*-
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  *
   6  * Copyright (C) 1999 WIDE Project.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the project 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 PROJECT 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 PROJECT 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 #include <sys/types.h>
  35 #include <sys/capsicum.h>
  36 #include <sys/socket.h>
  37 #include <sys/queue.h>
  38
  39 #include <net/if.h>
  40 #include <netinet/in.h>
  41 #include <netinet/icmp6.h>
  42 #include <arpa/inet.h>
  43
  44 #include <capsicum_helpers.h>
  45 #include <errno.h>
  46 #include <stdio.h>
  47 #include <string.h>
  48 #include <syslog.h>
  49 #include <time.h>
  50
  51 #include "rtsold.h"
  52
  53 static const char * const ifstatstr[] =
  54     { "IDLE", "DELAY", "PROBE", "DOWN", "TENTATIVE" };
  55
  56 void
  57 rtsold_dump(FILE *fp)
  58 {
  59         struct ifinfo *ifi;
  60         struct rainfo *rai;
  61         struct ra_opt *rao;
  62         struct timespec now;
  63         char ntopbuf[INET6_ADDRSTRLEN];
  64
  65         if (fseek(fp, 0, SEEK_SET) != 0) {
  66                 warnmsg(LOG_ERR, __func__, "fseek(): %s", strerror(errno));
  67                 return;
  68         }
  69         (void)ftruncate(fileno(fp), 0);
  70
  71         (void)clock_gettime(CLOCK_MONOTONIC_FAST, &now);
  72
  73         TAILQ_FOREACH(ifi, &ifinfo_head, ifi_next) {
  74                 fprintf(fp, "Interface %s\n", ifi->ifname);
  75                 fprintf(fp, "  probe interval: ");
  76                 if (ifi->probeinterval) {
  77                         fprintf(fp, "%d\n", ifi->probeinterval);
  78                         fprintf(fp, "  probe timer: %d\n", ifi->probetimer);
  79                 } else {
  80                         fprintf(fp, "infinity\n");
  81                         fprintf(fp, "  no probe timer\n");
  82                 }
  83                 fprintf(fp, "  interface status: %s\n",
  84                     ifi->active > 0 ? "active" : "inactive");
  85                 fprintf(fp, "  managed config: %s\n",
  86                     ifi->managedconfig ? "on" : "off");
  87                 fprintf(fp, "  other config: %s\n",
  88                     ifi->otherconfig ? "on" : "off");
  89                 fprintf(fp, "  rtsold status: %s\n", ifstatstr[ifi->state]);
  90                 fprintf(fp, "  carrier detection: %s\n",
  91                     ifi->mediareqok ? "available" : "unavailable");
  92                 fprintf(fp, "  probes: %d, dadcount = %d\n",
  93                     ifi->probes, ifi->dadcount);
  94                 if (ifi->timer.tv_sec == tm_max.tv_sec &&
  95                     ifi->timer.tv_nsec == tm_max.tv_nsec)
  96                         fprintf(fp, "  no timer\n");
  97                 else {
  98                         fprintf(fp, "  timer: interval=%d:%d, expire=%s\n",
  99                             (int)ifi->timer.tv_sec,
 100                             (int)ifi->timer.tv_nsec / 1000,
 101                             (ifi->expire.tv_sec < now.tv_sec) ? "expired"
 102                             : sec2str(&ifi->expire));
 103                 }
 104                 fprintf(fp, "  number of valid RAs: %d\n", ifi->racnt);
 105
 106                 TAILQ_FOREACH(rai, &ifi->ifi_rainfo, rai_next) {
 107                         fprintf(fp, "   RA from %s\n",
 108                             inet_ntop(AF_INET6, &rai->rai_saddr.sin6_addr,
 109                                 ntopbuf, sizeof(ntopbuf)));
 110                         TAILQ_FOREACH(rao, &rai->rai_ra_opt, rao_next) {
 111                                 fprintf(fp, "    option: ");
 112                                 switch (rao->rao_type) {
 113                                 case ND_OPT_RDNSS:
 114                                         fprintf(fp, "RDNSS: %s (expire: %s)\n",
 115                                             (char *)rao->rao_msg,
 116                                             sec2str(&rao->rao_expire));
 117                                         break;
 118                                 case ND_OPT_DNSSL:
 119                                         fprintf(fp, "DNSSL: %s (expire: %s)\n",
 120                                             (char *)rao->rao_msg,
 121                                             sec2str(&rao->rao_expire));
 122                                         break;
 123                                 default:
 124                                         break;
 125                                 }
 126                         }
 127                         fprintf(fp, "\n");
 128                 }
 129         }
 130         fflush(fp);
 131 }
 132
 133 FILE *
 134 rtsold_init_dumpfile(const char *dumpfile)
 135 {
 136         cap_rights_t rights;
 137         FILE *fp;
 138
 139         if ((fp = fopen(dumpfile, "w")) == NULL) {
 140                 warnmsg(LOG_WARNING, __func__, "opening a dump file(%s): %s",
 141                     dumpfile, strerror(errno));
 142                 return (NULL);
 143         }
 144
 145         cap_rights_init(&rights, CAP_FSTAT, CAP_FTRUNCATE, CAP_SEEK, CAP_WRITE);
 146         if (caph_rights_limit(fileno(fp), &rights) != 0) {
 147                 warnmsg(LOG_WARNING, __func__, "caph_rights_limit(%s): %s",
 148                     dumpfile, strerror(errno));
 149                 (void)fclose(fp);
 150                 return (NULL);
 151         }
 152         return (fp);
 153 }
 154
 155 const char *
 156 sec2str(const struct timespec *total)
 157 {
 158         static char result[256];
 159         int days, hours, mins, secs;
 160         int first = 1;
 161         char *p = result;
 162         char *ep = &result[sizeof(result)];
 163         int n;
 164         struct timespec now;
 165         time_t tsec;
 166
 167         clock_gettime(CLOCK_MONOTONIC_FAST, &now);
 168         tsec  = total->tv_sec;
 169         tsec += total->tv_nsec / 1000 / 1000000;
 170         tsec -= now.tv_sec;
 171         tsec -= now.tv_nsec / 1000 / 1000000;
 172
 173         days = tsec / 3600 / 24;
 174         hours = (tsec / 3600) % 24;
 175         mins = (tsec / 60) % 60;
 176         secs = tsec % 60;
 177
 178         if (days) {
 179                 first = 0;
 180                 n = snprintf(p, ep - p, "%dd", days);
 181                 if (n < 0 || n >= ep - p)
 182                         return "?";
 183                 p += n;
 184         }
 185         if (!first || hours) {
 186                 first = 0;
 187                 n = snprintf(p, ep - p, "%dh", hours);
 188                 if (n < 0 || n >= ep - p)
 189                         return "?";
 190                 p += n;
 191         }
 192         if (!first || mins) {
 193                 first = 0;
 194                 n = snprintf(p, ep - p, "%dm", mins);
 195                 if (n < 0 || n >= ep - p)
 196                         return "?";
 197                 p += n;
 198         }
 199         snprintf(p, ep - p, "%ds", secs);
 200
 201         return (result);
 202 }