1 /* $NetBSD: dump.c,v 1.9 2011/12/10 19:14:29 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 39 #include <netinet/in.h> 40 41 /* XXX: the following two are non-standard include files */ 42 #include <netinet6/in6_var.h> 43 #include <netinet6/nd6.h> 44 45 #include <arpa/inet.h> 46 47 #include <time.h> 48 #include <stdio.h> 49 #include <stdarg.h> 50 #include <syslog.h> 51 #include <string.h> 52 #include <errno.h> 53 #include <netdb.h> 54 55 #include "rtadvd.h" 56 #include "timer.h" 57 #include "if.h" 58 #include "dump.h" 59 60 static FILE *fp; 61 62 static char *ether_str(struct sockaddr_dl *); 63 static void if_dump(void); 64 65 static const char *rtpref_str[] = { 66 "medium", /* 00 */ 67 "high", /* 01 */ 68 "rsv", /* 10 */ 69 "low" /* 11 */ 70 }; 71 72 static char * 73 ether_str(struct sockaddr_dl *sdl) 74 { 75 static char hbuf[NI_MAXHOST]; 76 77 if (sdl->sdl_alen) { 78 if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len, 79 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 80 snprintf(hbuf, sizeof(hbuf), "<invalid>"); 81 } else 82 snprintf(hbuf, sizeof(hbuf), "NONE"); 83 84 return(hbuf); 85 } 86 87 static void 88 if_dump(void) 89 { 90 struct rainfo *rai; 91 struct prefix *pfx; 92 struct rtinfo *rti; 93 struct rdnss *rdns; 94 struct rdnss_addr *rdnsa; 95 struct dnssl *dnsl; 96 struct dnssl_domain *dnsd; 97 char *p, len; 98 char prefixbuf[INET6_ADDRSTRLEN]; 99 struct timeval now; 100 101 gettimeofday(&now, NULL); /* XXX: unused in most cases */ 102 TAILQ_FOREACH(rai, &ralist, next) { 103 fprintf(fp, "%s:\n", rai->ifname); 104 105 fprintf(fp, " Status: %s\n", 106 (iflist[rai->ifindex]->ifm_flags & IFF_UP) ? "UP" : 107 "DOWN"); 108 109 /* control information */ 110 if (rai->lastsent.tv_sec) { 111 /* note that ctime() appends CR by itself */ 112 fprintf(fp, " Last RA sent: %s", 113 ctime((time_t *)&rai->lastsent.tv_sec)); 114 } 115 if (rai->timer) { 116 fprintf(fp, " Next RA will be sent: %s", 117 ctime((time_t *)&rai->timer->tm.tv_sec)); 118 } 119 else 120 fprintf(fp, " RA timer is stopped"); 121 fprintf(fp, " waits: %d, initcount: %d\n", 122 rai->waiting, rai->initcounter); 123 124 /* statistics */ 125 fprintf(fp, " statistics: RA(out/in/inconsistent): " 126 "%llu/%llu/%llu, ", 127 (unsigned long long)rai->raoutput, 128 (unsigned long long)rai->rainput, 129 (unsigned long long)rai->rainconsistent); 130 fprintf(fp, "RS(input): %llu\n", 131 (unsigned long long)rai->rsinput); 132 133 /* interface information */ 134 if (rai->advlinkopt) 135 fprintf(fp, " Link-layer address: %s\n", 136 ether_str(rai->sdl)); 137 fprintf(fp, " MTU: %d\n", rai->phymtu); 138 139 /* Router configuration variables */ 140 fprintf(fp, " DefaultLifetime: %d, MaxAdvInterval: %d, " 141 "MinAdvInterval: %d\n", rai->lifetime, rai->maxinterval, 142 rai->mininterval); 143 fprintf(fp, " Flags: %s%s%s, ", 144 rai->managedflg ? "M" : "", rai->otherflg ? "O" : "", 145 ""); 146 fprintf(fp, "Preference: %s, ", 147 rtpref_str[(rai->rtpref >> 3) & 0xff]); 148 fprintf(fp, "MTU: %d\n", rai->linkmtu); 149 fprintf(fp, " ReachableTime: %d, RetransTimer: %d, " 150 "CurHopLimit: %d\n", rai->reachabletime, 151 rai->retranstimer, rai->hoplimit); 152 if (rai->clockskew) 153 fprintf(fp, " Clock skew: %dsec\n", 154 rai->clockskew); 155 TAILQ_FOREACH(pfx, &rai->prefix, next) { 156 if (pfx == TAILQ_FIRST(&rai->prefix)) 157 fprintf(fp, " Prefixes:\n"); 158 fprintf(fp, " %s/%d(", 159 inet_ntop(AF_INET6, &pfx->prefix, prefixbuf, 160 sizeof(prefixbuf)), pfx->prefixlen); 161 switch (pfx->origin) { 162 case PREFIX_FROM_KERNEL: 163 fprintf(fp, "KERNEL, "); 164 break; 165 case PREFIX_FROM_CONFIG: 166 fprintf(fp, "CONFIG, "); 167 break; 168 case PREFIX_FROM_DYNAMIC: 169 fprintf(fp, "DYNAMIC, "); 170 break; 171 } 172 if (pfx->validlifetime == ND6_INFINITE_LIFETIME) 173 fprintf(fp, "vltime: infinity"); 174 else 175 fprintf(fp, "vltime: %ld", 176 (long)pfx->validlifetime); 177 if (pfx->vltimeexpire != 0) 178 fprintf(fp, "(decr,expire %lld), ", (long long) 179 (pfx->vltimeexpire > now.tv_sec ? 180 pfx->vltimeexpire - now.tv_sec : 0)); 181 else 182 fprintf(fp, ", "); 183 if (pfx->preflifetime == ND6_INFINITE_LIFETIME) 184 fprintf(fp, "pltime: infinity"); 185 else 186 fprintf(fp, "pltime: %ld", 187 (long)pfx->preflifetime); 188 if (pfx->pltimeexpire != 0) 189 fprintf(fp, "(decr,expire %lld), ", (long long) 190 (pfx->pltimeexpire > now.tv_sec ? 191 pfx->pltimeexpire - now.tv_sec : 0)); 192 else 193 fprintf(fp, ", "); 194 fprintf(fp, "flags: %s%s%s", 195 pfx->onlinkflg ? "L" : "", 196 pfx->autoconfflg ? "A" : "", 197 ""); 198 if (pfx->timer) { 199 struct timeval *rest; 200 201 rest = rtadvd_timer_rest(pfx->timer); 202 if (rest) { /* XXX: what if not? */ 203 fprintf(fp, ", expire in: %ld", 204 (long)rest->tv_sec); 205 } 206 } 207 fprintf(fp, ")\n"); 208 } 209 210 TAILQ_FOREACH(rti, &rai->route, next) { 211 if (rti == TAILQ_FIRST(&rai->route)) 212 fprintf(fp, " Route Information:\n"); 213 fprintf(fp, " %s/%d (", 214 inet_ntop(AF_INET6, &rti->prefix, 215 prefixbuf, sizeof(prefixbuf)), 216 rti->prefixlen); 217 fprintf(fp, "preference: %s, ", 218 rtpref_str[0xff & (rti->rtpref >> 3)]); 219 if (rti->ltime == ND6_INFINITE_LIFETIME) 220 fprintf(fp, "lifetime: infinity"); 221 else 222 fprintf(fp, "lifetime: %ld", (long)rti->ltime); 223 fprintf(fp, ")\n"); 224 } 225 226 TAILQ_FOREACH(rdns, &rai->rdnss, next) { 227 fprintf(fp, " Recursive DNS Servers:\n"); 228 if (rdns->lifetime == ND6_INFINITE_LIFETIME) 229 fprintf(fp, " lifetime: infinity\n"); 230 else 231 fprintf(fp, " lifetime: %ld\n", 232 (long)rdns->lifetime); 233 TAILQ_FOREACH(rdnsa, &rdns->list, next) 234 fprintf(fp, " %s\n", 235 inet_ntop(AF_INET6, &rdnsa->addr, 236 prefixbuf, sizeof(prefixbuf))); 237 } 238 239 TAILQ_FOREACH(dnsl, &rai->dnssl, next) { 240 fprintf(fp, " DNS Search List:\n"); 241 if (dnsl->lifetime == ND6_INFINITE_LIFETIME) 242 fprintf(fp, " lifetime: infinity\n"); 243 else 244 fprintf(fp, " lifetime: %ld\n", 245 (long)dnsl->lifetime); 246 TAILQ_FOREACH(dnsd, &dnsl->list, next) { 247 fprintf(fp, " "); 248 for (p = dnsd->domain, len = *p++; 249 len != 0; 250 len = *p++) 251 { 252 if (p != dnsd->domain) 253 fputc('.', fp); 254 while(len-- != 0) 255 fputc(*p++, fp); 256 } 257 fputc('\n', fp); 258 } 259 } 260 } 261 } 262 263 void 264 rtadvd_dump_file(const char *dumpfile) 265 { 266 syslog(LOG_DEBUG, "<%s> dump current status to %s", __func__, 267 dumpfile); 268 269 if ((fp = fopen(dumpfile, "w")) == NULL) { 270 syslog(LOG_WARNING, "<%s> open a dump file(%s)", 271 __func__, dumpfile); 272 return; 273 } 274 275 if_dump(); 276 277 fclose(fp); 278 } 279