usr.sbin/rtadvd/dump.c

   1 /*      $NetBSD: dump.c,v 1.12 2015/06/05 14:09:20 roy Exp $    */
   2 /*      $KAME: dump.c,v 1.34 2004/06/14 05:35:59 itojun Exp $   */
   3
   4 /*
   5  * Copyright (C) 2000 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 #include <sys/types.h>
  33 #include <sys/socket.h>
  34 #include <sys/queue.h>
  35
  36 #include <net/if.h>
  37 #include <net/if_dl.h>
  38 #ifdef __FreeBSD__
  39 #include <net/if_var.h>
  40 #endif
  41
  42 #include <netinet/in.h>
  43
  44 /* XXX: the following two are non-standard include files */
  45 #include <netinet6/in6_var.h>
  46 #include <netinet6/nd6.h>
  47
  48 #include <arpa/inet.h>
  49
  50 #include <time.h>
  51 #include <stdio.h>
  52 #include <stdarg.h>
  53 #include <syslog.h>
  54 #include <string.h>
  55 #include <errno.h>
  56 #include <netdb.h>
  57
  58 #include "rtadvd.h"
  59 #include "timer.h"
  60 #include "if.h"
  61 #include "dump.h"
  62
  63 static FILE *fp;
  64
  65 static char *ether_str(struct sockaddr_dl *);
  66 static void if_dump(void);
  67
  68 static const char *rtpref_str[] = {
  69         "medium",               /* 00 */
  70         "high",                 /* 01 */
  71         "rsv",                  /* 10 */
  72         "low"                   /* 11 */
  73 };
  74
  75 static char *
  76 ether_str(struct sockaddr_dl *sdl)
  77 {
  78         static char hbuf[NI_MAXHOST];
  79
  80         if (sdl->sdl_alen) {
  81                 if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len,
  82                     hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
  83                         snprintf(hbuf, sizeof(hbuf), "<invalid>");
  84         } else
  85                 snprintf(hbuf, sizeof(hbuf), "NONE");
  86
  87         return(hbuf);
  88 }
  89
  90 static void
  91 if_dump(void)
  92 {
  93         struct rainfo *rai;
  94         struct prefix *pfx;
  95         struct rtinfo *rti;
  96         struct rdnss *rdns;
  97         struct rdnss_addr *rdnsa;
  98         struct dnssl *dnsl;
  99         struct dnssl_domain *dnsd;
 100         char *p, len;
 101         char prefixbuf[INET6_ADDRSTRLEN];
 102         struct timespec now;
 103
 104         clock_gettime(CLOCK_MONOTONIC, &now); /* XXX: unused in most cases */
 105         TAILQ_FOREACH(rai, &ralist, next) {
 106                 fprintf(fp, "%s:\n", rai->ifname);
 107
 108                 fprintf(fp, "  Status: %s\n",
 109                         (rai->ifflags & IFF_UP) ? "UP" : "DOWN");
 110
 111                 /* control information */
 112                 if (rai->lastsent.tv_sec) {
 113                         /* note that ctime() appends CR by itself */
 114                         fprintf(fp, "  Last RA sent: %s",
 115                                 ctime((time_t *)&rai->lastsent.tv_sec));
 116                 }
 117                 if (rai->timer) {
 118                         fprintf(fp, "  Next RA will be sent: %s",
 119                                 ctime((time_t *)&rai->timer->tm.tv_sec));
 120                 }
 121                 else
 122                         fprintf(fp, "  RA timer is stopped");
 123                 fprintf(fp, "  waits: %d, initcount: %d\n",
 124                         rai->waiting, rai->initcounter);
 125
 126                 /* statistics */
 127                 fprintf(fp, "  statistics: RA(out/in/inconsistent): "
 128                     "%llu/%llu/%llu, ",
 129                     (unsigned long long)rai->raoutput,
 130                     (unsigned long long)rai->rainput,
 131                     (unsigned long long)rai->rainconsistent);
 132                 fprintf(fp, "RS(input): %llu\n",
 133                     (unsigned long long)rai->rsinput);
 134
 135                 /* interface information */
 136                 if (rai->advlinkopt)
 137                         fprintf(fp, "  Link-layer address: %s\n",
 138                             ether_str(rai->sdl));
 139                 fprintf(fp, "  MTU: %d\n", rai->phymtu);
 140
 141                 /* Router configuration variables */
 142                 fprintf(fp, "  DefaultLifetime: %d, MaxAdvInterval: %d, "
 143                     "MinAdvInterval: %d\n", rai->lifetime, rai->maxinterval,
 144                     rai->mininterval);
 145                 fprintf(fp, "  Flags: %s%s%s, ",
 146                     rai->managedflg ? "M" : "", rai->otherflg ? "O" : "",
 147                     "");
 148                 fprintf(fp, "Preference: %s, ",
 149                         rtpref_str[(rai->rtpref >> 3) & 0xff]);
 150                 fprintf(fp, "MTU: %d\n", rai->linkmtu);
 151                 fprintf(fp, "  ReachableTime: %d, RetransTimer: %d, "
 152                         "CurHopLimit: %d\n", rai->reachabletime,
 153                         rai->retranstimer, rai->hoplimit);
 154                 if (rai->clockskew)
 155                         fprintf(fp, "  Clock skew: %dsec\n",
 156                             rai->clockskew);
 157                 TAILQ_FOREACH(pfx, &rai->prefix, next) {
 158                         if (pfx == TAILQ_FIRST(&rai->prefix))
 159                                 fprintf(fp, "  Prefixes:\n");
 160                         fprintf(fp, "    %s/%d(",
 161                             inet_ntop(AF_INET6, &pfx->prefix, prefixbuf,
 162                             sizeof(prefixbuf)), pfx->prefixlen);
 163                         switch (pfx->origin) {
 164                         case PREFIX_FROM_KERNEL:
 165                                 fprintf(fp, "KERNEL, ");
 166                                 break;
 167                         case PREFIX_FROM_CONFIG:
 168                                 fprintf(fp, "CONFIG, ");
 169                                 break;
 170                         case PREFIX_FROM_DYNAMIC:
 171                                 fprintf(fp, "DYNAMIC, ");
 172                                 break;
 173                         }
 174                         if (pfx->validlifetime == ND6_INFINITE_LIFETIME)
 175                                 fprintf(fp, "vltime: infinity");
 176                         else
 177                                 fprintf(fp, "vltime: %ld",
 178                                         (long)pfx->validlifetime);
 179                         if (pfx->vltimeexpire != 0)
 180                                 fprintf(fp, "(decr,expire %lld), ", (long long)
 181                                         (pfx->vltimeexpire > now.tv_sec ?
 182                                         pfx->vltimeexpire - now.tv_sec : 0));
 183                         else
 184                                 fprintf(fp, ", ");
 185                         if (pfx->preflifetime ==  ND6_INFINITE_LIFETIME)
 186                                 fprintf(fp, "pltime: infinity");
 187                         else
 188                                 fprintf(fp, "pltime: %ld",
 189                                         (long)pfx->preflifetime);
 190                         if (pfx->pltimeexpire != 0)
 191                                 fprintf(fp, "(decr,expire %lld), ", (long long)
 192                                         (pfx->pltimeexpire > now.tv_sec ?
 193                                         pfx->pltimeexpire - now.tv_sec : 0));
 194                         else
 195                                 fprintf(fp, ", ");
 196                         fprintf(fp, "flags: %s%s%s",
 197                                 pfx->onlinkflg ? "L" : "",
 198                                 pfx->autoconfflg ? "A" : "",
 199                                 "");
 200                         if (pfx->timer) {
 201                                 struct timespec *rest;
 202
 203                                 rest = rtadvd_timer_rest(pfx->timer);
 204                                 if (rest) { /* XXX: what if not? */
 205                                         fprintf(fp, ", expire in: %ld",
 206                                             (long)rest->tv_sec);
 207                                 }
 208                         }
 209                         fprintf(fp, ")\n");
 210                 }
 211
 212                 TAILQ_FOREACH(rti, &rai->route, next) {
 213                         if (rti == TAILQ_FIRST(&rai->route))
 214                                 fprintf(fp, "  Route Information:\n");
 215                         fprintf(fp, "    %s/%d (",
 216                                 inet_ntop(AF_INET6, &rti->prefix,
 217                                           prefixbuf, sizeof(prefixbuf)),
 218                                 rti->prefixlen);
 219                         fprintf(fp, "preference: %s, ",
 220                                 rtpref_str[0xff & (rti->rtpref >> 3)]);
 221                         if (rti->ltime == ND6_INFINITE_LIFETIME)
 222                                 fprintf(fp, "lifetime: infinity");
 223                         else
 224                                 fprintf(fp, "lifetime: %ld", (long)rti->ltime);
 225                         fprintf(fp, ")\n");
 226                 }
 227
 228                 TAILQ_FOREACH(rdns, &rai->rdnss, next) {
 229                         fprintf(fp, "  Recursive DNS Servers:\n");
 230                         if (rdns->lifetime == ND6_INFINITE_LIFETIME)
 231                                 fprintf(fp, "    lifetime: infinity\n");
 232                         else
 233                                 fprintf(fp, "    lifetime: %ld\n",
 234                                     (long)rdns->lifetime);
 235                         TAILQ_FOREACH(rdnsa, &rdns->list, next)
 236                                 fprintf(fp, "    %s\n",
 237                                     inet_ntop(AF_INET6, &rdnsa->addr,
 238                                     prefixbuf, sizeof(prefixbuf)));
 239                 }
 240
 241                 TAILQ_FOREACH(dnsl, &rai->dnssl, next) {
 242                         fprintf(fp, "  DNS Search List:\n");
 243                         if (dnsl->lifetime == ND6_INFINITE_LIFETIME)
 244                                 fprintf(fp, "    lifetime: infinity\n");
 245                         else
 246                                 fprintf(fp, "    lifetime: %ld\n",
 247                                     (long)dnsl->lifetime);
 248                         TAILQ_FOREACH(dnsd, &dnsl->list, next) {
 249                                 fprintf(fp, "    ");
 250                                 for (p = dnsd->domain, len = *p++;
 251                                     len != 0;
 252                                     len = *p++)
 253                                 {
 254                                         if (p != dnsd->domain)
 255                                             fputc('.', fp);
 256                                         while(len-- != 0)
 257                                             fputc(*p++, fp);
 258                                 }
 259                                 fputc('\n', fp);
 260                         }
 261                 }
 262         }
 263 }
 264
 265 void
 266 rtadvd_dump_file(const char *dumpfile)
 267 {
 268         syslog(LOG_DEBUG, "<%s> dump current status to %s", __func__,
 269             dumpfile);
 270
 271         if ((fp = fopen(dumpfile, "w")) == NULL) {
 272                 syslog(LOG_WARNING, "<%s> open a dump file(%s): %m",
 273                        __func__, dumpfile);
 274                 return;
 275         }
 276
 277         if_dump();
 278
 279         fclose(fp);
 280 }