1 /* $NetBSD: dump.c,v 1.16 2018/04/20 10:39:37 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 "logit.h" 61 #include "if.h" 62 #include "dump.h" 63 #include "prog_ops.h" 64 65 static FILE *fp; 66 67 static char *ether_str(struct sockaddr_dl *); 68 static void if_dump(void); 69 70 static const char *rtpref_str[] = { 71 "medium", /* 00 */ 72 "high", /* 01 */ 73 "rsv", /* 10 */ 74 "low" /* 11 */ 75 }; 76 77 static char * 78 ether_str(struct sockaddr_dl *sdl) 79 { 80 static char hbuf[NI_MAXHOST]; 81 82 if (sdl->sdl_alen) { 83 if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len, 84 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 85 snprintf(hbuf, sizeof(hbuf), "<invalid>"); 86 } else 87 snprintf(hbuf, sizeof(hbuf), "NONE"); 88 89 return(hbuf); 90 } 91 92 static void 93 if_dump(void) 94 { 95 struct rainfo *rai; 96 struct prefix *pfx; 97 struct rtinfo *rti; 98 struct rdnss *rdns; 99 struct rdnss_addr *rdnsa; 100 struct dnssl *dnsl; 101 struct dnssl_domain *dnsd; 102 char *p, len; 103 char prefixbuf[INET6_ADDRSTRLEN]; 104 struct timespec now; 105 106 prog_clock_gettime(CLOCK_MONOTONIC, &now); /* XXX: unused in most cases */ 107 TAILQ_FOREACH(rai, &ralist, next) { 108 fprintf(fp, "%s:\n", rai->ifname); 109 110 fprintf(fp, " Status: %s\n", 111 (rai->ifflags & IFF_UP) ? "UP" : "DOWN"); 112 113 /* control information */ 114 if (rai->lastsent.tv_sec) { 115 /* note that ctime() appends CR by itself */ 116 fprintf(fp, " Last RA sent: %s", 117 ctime(&rai->lastsent.tv_sec)); 118 } 119 if (rai->timer) { 120 fprintf(fp, " Next RA will be sent: %s", 121 ctime(&rai->timer->tm.tv_sec)); 122 } 123 else 124 fprintf(fp, " RA timer is stopped"); 125 fprintf(fp, " waits: %d, initcount: %d\n", 126 rai->waiting, rai->initcounter); 127 128 /* statistics */ 129 fprintf(fp, " statistics: RA(out/in/inconsistent): " 130 "%llu/%llu/%llu, ", 131 (unsigned long long)rai->raoutput, 132 (unsigned long long)rai->rainput, 133 (unsigned long long)rai->rainconsistent); 134 fprintf(fp, "RS(input): %llu\n", 135 (unsigned long long)rai->rsinput); 136 137 /* interface information */ 138 if (rai->advlinkopt) 139 fprintf(fp, " Link-layer address: %s\n", 140 ether_str(rai->sdl)); 141 fprintf(fp, " MTU: %d\n", rai->phymtu); 142 143 /* Router configuration variables */ 144 fprintf(fp, " DefaultLifetime: %d, MaxAdvInterval: %d, " 145 "MinAdvInterval: %d\n", rai->lifetime, rai->maxinterval, 146 rai->mininterval); 147 fprintf(fp, " Flags: %s%s%s, ", 148 rai->managedflg ? "M" : "", rai->otherflg ? "O" : "", 149 ""); 150 fprintf(fp, "Preference: %s, ", 151 rtpref_str[(rai->rtpref >> 3) & 0xff]); 152 fprintf(fp, "MTU: %d\n", rai->linkmtu); 153 fprintf(fp, " ReachableTime: %d, RetransTimer: %d, " 154 "CurHopLimit: %d\n", rai->reachabletime, 155 rai->retranstimer, rai->hoplimit); 156 if (rai->clockskew) 157 fprintf(fp, " Clock skew: %dsec\n", 158 rai->clockskew); 159 TAILQ_FOREACH(pfx, &rai->prefix, next) { 160 if (pfx == TAILQ_FIRST(&rai->prefix)) 161 fprintf(fp, " Prefixes:\n"); 162 fprintf(fp, " %s/%d(", 163 inet_ntop(AF_INET6, &pfx->prefix, prefixbuf, 164 sizeof(prefixbuf)), pfx->prefixlen); 165 switch (pfx->origin) { 166 case PREFIX_FROM_KERNEL: 167 fprintf(fp, "KERNEL, "); 168 break; 169 case PREFIX_FROM_CONFIG: 170 fprintf(fp, "CONFIG, "); 171 break; 172 case PREFIX_FROM_DYNAMIC: 173 fprintf(fp, "DYNAMIC, "); 174 break; 175 } 176 if (pfx->validlifetime == ND6_INFINITE_LIFETIME) 177 fprintf(fp, "vltime: infinity"); 178 else 179 fprintf(fp, "vltime: %ld", 180 (long)pfx->validlifetime); 181 if (pfx->vltimeexpire != 0) 182 fprintf(fp, "(decr,expire %lld), ", (long long) 183 (pfx->vltimeexpire > now.tv_sec ? 184 pfx->vltimeexpire - now.tv_sec : 0)); 185 else 186 fprintf(fp, ", "); 187 if (pfx->preflifetime == ND6_INFINITE_LIFETIME) 188 fprintf(fp, "pltime: infinity"); 189 else 190 fprintf(fp, "pltime: %ld", 191 (long)pfx->preflifetime); 192 if (pfx->pltimeexpire != 0) 193 fprintf(fp, "(decr,expire %lld), ", (long long) 194 (pfx->pltimeexpire > now.tv_sec ? 195 pfx->pltimeexpire - now.tv_sec : 0)); 196 else 197 fprintf(fp, ", "); 198 fprintf(fp, "flags: %s%s%s", 199 pfx->onlinkflg ? "L" : "", 200 pfx->autoconfflg ? "A" : "", 201 ""); 202 if (pfx->timer) { 203 struct timespec *rest; 204 205 rest = rtadvd_timer_rest(pfx->timer); 206 if (rest) { /* XXX: what if not? */ 207 fprintf(fp, ", expire in: %ld", 208 (long)rest->tv_sec); 209 } 210 } 211 fprintf(fp, ")\n"); 212 } 213 214 TAILQ_FOREACH(rti, &rai->route, next) { 215 if (rti == TAILQ_FIRST(&rai->route)) 216 fprintf(fp, " Route Information:\n"); 217 fprintf(fp, " %s/%d (", 218 inet_ntop(AF_INET6, &rti->prefix, 219 prefixbuf, sizeof(prefixbuf)), 220 rti->prefixlen); 221 fprintf(fp, "preference: %s, ", 222 rtpref_str[0xff & (rti->rtpref >> 3)]); 223 if (rti->ltime == ND6_INFINITE_LIFETIME) 224 fprintf(fp, "lifetime: infinity"); 225 else 226 fprintf(fp, "lifetime: %ld", (long)rti->ltime); 227 fprintf(fp, ")\n"); 228 } 229 230 TAILQ_FOREACH(rdns, &rai->rdnss, next) { 231 fprintf(fp, " Recursive DNS Servers:\n"); 232 if (rdns->lifetime == ND6_INFINITE_LIFETIME) 233 fprintf(fp, " lifetime: infinity\n"); 234 else 235 fprintf(fp, " lifetime: %ld\n", 236 (long)rdns->lifetime); 237 TAILQ_FOREACH(rdnsa, &rdns->list, next) 238 fprintf(fp, " %s\n", 239 inet_ntop(AF_INET6, &rdnsa->addr, 240 prefixbuf, sizeof(prefixbuf))); 241 } 242 243 TAILQ_FOREACH(dnsl, &rai->dnssl, next) { 244 fprintf(fp, " DNS Search List:\n"); 245 if (dnsl->lifetime == ND6_INFINITE_LIFETIME) 246 fprintf(fp, " lifetime: infinity\n"); 247 else 248 fprintf(fp, " lifetime: %ld\n", 249 (long)dnsl->lifetime); 250 TAILQ_FOREACH(dnsd, &dnsl->list, next) { 251 fprintf(fp, " "); 252 for (p = dnsd->domain, len = *p++; 253 len != 0; 254 len = *p++) 255 { 256 if (p != dnsd->domain) 257 fputc('.', fp); 258 while(len-- != 0) 259 fputc(*p++, fp); 260 } 261 fputc('\n', fp); 262 } 263 } 264 } 265 } 266 267 void 268 rtadvd_dump_file(const char *dumpfile) 269 { 270 logit(LOG_DEBUG, "<%s> dump current status to %s", __func__, 271 dumpfile); 272 273 if ((fp = fopen(dumpfile, "w")) == NULL) { 274 logit(LOG_WARNING, "<%s> open a dump file(%s): %m", 275 __func__, dumpfile); 276 return; 277 } 278 279 if_dump(); 280 281 fclose(fp); 282 } 283