162590Sitojun/* $FreeBSD$ */ 2122615Sume/* $KAME: ndp.c,v 1.104 2003/06/27 07:48:39 itojun Exp $ */ 362590Sitojun 455505Sshin/* 555505Sshin * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 655505Sshin * All rights reserved. 755505Sshin * 855505Sshin * Redistribution and use in source and binary forms, with or without 955505Sshin * modification, are permitted provided that the following conditions 1055505Sshin * are met: 1155505Sshin * 1. Redistributions of source code must retain the above copyright 1255505Sshin * notice, this list of conditions and the following disclaimer. 1355505Sshin * 2. Redistributions in binary form must reproduce the above copyright 1455505Sshin * notice, this list of conditions and the following disclaimer in the 1555505Sshin * documentation and/or other materials provided with the distribution. 1655505Sshin * 3. Neither the name of the project nor the names of its contributors 1755505Sshin * may be used to endorse or promote products derived from this software 1855505Sshin * without specific prior written permission. 1955505Sshin * 2055505Sshin * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 2155505Sshin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2255505Sshin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2355505Sshin * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 2455505Sshin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2555505Sshin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2655505Sshin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2755505Sshin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2855505Sshin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2955505Sshin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3055505Sshin * SUCH DAMAGE. 3155505Sshin */ 3255505Sshin/* 3355505Sshin * Copyright (c) 1984, 1993 3455505Sshin * The Regents of the University of California. All rights reserved. 3555505Sshin * 3655505Sshin * This code is derived from software contributed to Berkeley by 3755505Sshin * Sun Microsystems, Inc. 3855505Sshin * 3955505Sshin * Redistribution and use in source and binary forms, with or without 4055505Sshin * modification, are permitted provided that the following conditions 4155505Sshin * are met: 4255505Sshin * 1. Redistributions of source code must retain the above copyright 4355505Sshin * notice, this list of conditions and the following disclaimer. 4455505Sshin * 2. Redistributions in binary form must reproduce the above copyright 4555505Sshin * notice, this list of conditions and the following disclaimer in the 4655505Sshin * documentation and/or other materials provided with the distribution. 4755505Sshin * 4. Neither the name of the University nor the names of its contributors 4855505Sshin * may be used to endorse or promote products derived from this software 4955505Sshin * without specific prior written permission. 5055505Sshin * 5155505Sshin * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 5255505Sshin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 5355505Sshin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 5455505Sshin * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 5555505Sshin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 5655505Sshin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 5755505Sshin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 5855505Sshin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 5955505Sshin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 6055505Sshin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 6155505Sshin * SUCH DAMAGE. 6255505Sshin */ 6355505Sshin 6455505Sshin/* 6555505Sshin * Based on: 6655505Sshin * "@(#) Copyright (c) 1984, 1993\n\ 6755505Sshin * The Regents of the University of California. All rights reserved.\n"; 6855505Sshin * 6955505Sshin * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 7055505Sshin */ 7155505Sshin 7255505Sshin/* 7355505Sshin * ndp - display, set, delete and flush neighbor cache 7455505Sshin */ 7555505Sshin 7655505Sshin 7755505Sshin#include <sys/param.h> 7855505Sshin#include <sys/file.h> 7955505Sshin#include <sys/ioctl.h> 8055505Sshin#include <sys/socket.h> 8155505Sshin#include <sys/sysctl.h> 82253999Shrs#include <sys/time.h> 8378064Sume#include <sys/queue.h> 8455505Sshin 8555505Sshin#include <net/if.h> 8655505Sshin#include <net/if_var.h> 8755505Sshin#include <net/if_dl.h> 8855505Sshin#include <net/if_types.h> 8955505Sshin#include <net/route.h> 9055505Sshin 9155505Sshin#include <netinet/in.h> 9255505Sshin#include <netinet/if_ether.h> 9355505Sshin 9455505Sshin#include <netinet/icmp6.h> 9555505Sshin#include <netinet6/in6_var.h> 9655505Sshin#include <netinet6/nd6.h> 9755505Sshin 9855505Sshin#include <arpa/inet.h> 9955505Sshin 100270655Sae#include <ctype.h> 10155505Sshin#include <netdb.h> 10255505Sshin#include <errno.h> 10355505Sshin#include <nlist.h> 10455505Sshin#include <stdio.h> 10555505Sshin#include <string.h> 10655505Sshin#include <paths.h> 10755505Sshin#include <err.h> 10855505Sshin#include <stdlib.h> 10955505Sshin#include <fcntl.h> 11055505Sshin#include <unistd.h> 11155505Sshin#include "gmt2local.h" 11255505Sshin 11355505Sshin/* packing rule for routing socket */ 11462590Sitojun#define ROUNDUP(a) \ 11555505Sshin ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 11662590Sitojun#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 11755505Sshin 118186119Sqingli#define NEXTADDR(w, s) \ 119186119Sqingli if (rtm->rtm_addrs & (w)) { \ 120196866Sbz bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);} 121186119Sqingli 122186119Sqingli 123100650Sjmallettstatic pid_t pid; 12462590Sitojunstatic int nflag; 12562590Sitojunstatic int tflag; 12662590Sitojunstatic int32_t thiszone; /* time difference with gmt */ 12762590Sitojunstatic int s = -1; 12862590Sitojunstatic int repeat = 0; 12955505Sshin 130287735Shrsstatic char host_buf[NI_MAXHOST]; /* getnameinfo() */ 131287735Shrsstatic char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 13255505Sshin 133270655Saestatic int file(char *); 134287735Shrsstatic void getsocket(void); 135287735Shrsstatic int set(int, char **); 136287735Shrsstatic void get(char *); 137287735Shrsstatic int delete(char *); 138287735Shrsstatic void dump(struct sockaddr_in6 *, int); 139173412Skevlostatic struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int); 140173412Skevlostatic char *ether_str(struct sockaddr_dl *); 141287735Shrsstatic int ndp_ether_aton(char *, u_char *); 142287735Shrsstatic void usage(void); 143287735Shrsstatic int rtmsg(int); 144287735Shrsstatic void ifinfo(char *, int, char **); 145287735Shrsstatic void rtrlist(void); 146287735Shrsstatic void plist(void); 147287735Shrsstatic void pfx_flush(void); 148287735Shrsstatic void rtr_flush(void); 149287735Shrsstatic void harmonize_rtr(void); 15062590Sitojun#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 151173412Skevlostatic void getdefif(void); 152173412Skevlostatic void setdefif(char *); 15362590Sitojun#endif 154173412Skevlostatic char *sec2str(time_t); 155253999Shrsstatic void ts_print(const struct timeval *); 15655505Sshin 15778064Sumestatic char *rtpref_str[] = { 15878064Sume "medium", /* 00 */ 15978064Sume "high", /* 01 */ 16078064Sume "rsv", /* 10 */ 16178064Sume "low" /* 11 */ 16278064Sume}; 16378064Sume 16455505Sshinint 165287735Shrsmain(int argc, char **argv) 16655505Sshin{ 167287735Shrs int ch, mode = 0; 168287735Shrs char *arg = NULL; 16955505Sshin 17055505Sshin pid = getpid(); 17155505Sshin thiszone = gmt2local(0); 172122615Sume while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 173121156Sume switch (ch) { 17455505Sshin case 'a': 17555505Sshin case 'c': 176122615Sume case 'p': 177122615Sume case 'r': 178122615Sume case 'H': 179122615Sume case 'P': 180122615Sume case 'R': 181122615Sume case 's': 182122615Sume case 'I': 183122615Sume if (mode) { 184122615Sume usage(); 185122615Sume /*NOTREACHED*/ 186122615Sume } 187122615Sume mode = ch; 188122615Sume arg = NULL; 18955505Sshin break; 190270655Sae case 'f': 191270655Sae exit(file(optarg) ? 1 : 0); 19255505Sshin case 'd': 193270655Sae case 'i': 194122615Sume if (mode) { 19555505Sshin usage(); 196122615Sume /*NOTREACHED*/ 197122615Sume } 198122615Sume mode = ch; 199122615Sume arg = optarg; 200122615Sume break; 20155505Sshin case 'n': 20255505Sshin nflag = 1; 20355505Sshin break; 20455505Sshin case 't': 20555505Sshin tflag = 1; 20655505Sshin break; 20755505Sshin case 'A': 208122615Sume if (mode) { 209122615Sume usage(); 210122615Sume /*NOTREACHED*/ 211122615Sume } 212122615Sume mode = 'a'; 21355505Sshin repeat = atoi(optarg); 214122615Sume if (repeat < 0) { 21555505Sshin usage(); 216122615Sume /*NOTREACHED*/ 217122615Sume } 21855505Sshin break; 21955505Sshin default: 22055505Sshin usage(); 22155505Sshin } 22255505Sshin 22355505Sshin argc -= optind; 22455505Sshin argv += optind; 22555505Sshin 226122615Sume switch (mode) { 227122615Sume case 'a': 228122615Sume case 'c': 229122615Sume if (argc != 0) { 23055505Sshin usage(); 231122615Sume /*NOTREACHED*/ 232122615Sume } 233122615Sume dump(0, mode == 'c'); 234122615Sume break; 235122615Sume case 'd': 236122615Sume if (argc != 0) { 237122615Sume usage(); 238122615Sume /*NOTREACHED*/ 239122615Sume } 240122615Sume delete(arg); 241122615Sume break; 242122615Sume case 'I': 243122615Sume#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 244122615Sume if (argc > 1) { 245122615Sume usage(); 246122615Sume /*NOTREACHED*/ 247122615Sume } else if (argc == 1) { 248122615Sume if (strcmp(*argv, "delete") == 0 || 249122615Sume if_nametoindex(*argv)) 250122615Sume setdefif(*argv); 251122615Sume else 252122615Sume errx(1, "invalid interface %s", *argv); 253122615Sume } 254122615Sume getdefif(); /* always call it to print the result */ 255122615Sume break; 256122615Sume#else 257122615Sume errx(1, "not supported yet"); 258122615Sume /*NOTREACHED*/ 259122615Sume#endif 260122615Sume case 'p': 261122615Sume if (argc != 0) { 262122615Sume usage(); 263122615Sume /*NOTREACHED*/ 264122615Sume } 26555505Sshin plist(); 266122615Sume break; 267122615Sume case 'i': 268122615Sume ifinfo(arg, argc, argv); 269122615Sume break; 270122615Sume case 'r': 271122615Sume if (argc != 0) { 272122615Sume usage(); 273122615Sume /*NOTREACHED*/ 274122615Sume } 27555505Sshin rtrlist(); 276122615Sume break; 277122615Sume case 's': 27855505Sshin if (argc < 2 || argc > 4) 27955505Sshin usage(); 28055505Sshin exit(set(argc, argv) ? 1 : 0); 281122615Sume case 'H': 282122615Sume if (argc != 0) { 283122615Sume usage(); 284122615Sume /*NOTREACHED*/ 285122615Sume } 28655505Sshin harmonize_rtr(); 287122615Sume break; 288122615Sume case 'P': 289122615Sume if (argc != 0) { 290122615Sume usage(); 291122615Sume /*NOTREACHED*/ 292122615Sume } 29355505Sshin pfx_flush(); 294122615Sume break; 295122615Sume case 'R': 296122615Sume if (argc != 0) { 297122615Sume usage(); 298122615Sume /*NOTREACHED*/ 299122615Sume } 30055505Sshin rtr_flush(); 301122615Sume break; 302122615Sume case 0: 303122615Sume if (argc != 1) { 304122615Sume usage(); 305122615Sume /*NOTREACHED*/ 306122615Sume } 307122615Sume get(argv[0]); 308122615Sume break; 30955505Sshin } 31055505Sshin exit(0); 31155505Sshin} 31255505Sshin 31355505Sshin/* 31455505Sshin * Process a file to set standard ndp entries 31555505Sshin */ 316270655Saestatic int 317287735Shrsfile(char *name) 31855505Sshin{ 31955505Sshin FILE *fp; 32055505Sshin int i, retval; 321270655Sae char line[100], arg[5][50], *args[5], *p; 32255505Sshin 323270655Sae if ((fp = fopen(name, "r")) == NULL) 324270655Sae err(1, "cannot open %s", name); 32555505Sshin args[0] = &arg[0][0]; 32655505Sshin args[1] = &arg[1][0]; 32755505Sshin args[2] = &arg[2][0]; 32855505Sshin args[3] = &arg[3][0]; 32955505Sshin args[4] = &arg[4][0]; 33055505Sshin retval = 0; 331167260Skevlo while (fgets(line, sizeof(line), fp) != NULL) { 332270655Sae if ((p = strchr(line, '#')) != NULL) 333270655Sae *p = '\0'; 334270655Sae for (p = line; isblank(*p); p++); 335270655Sae if (*p == '\n' || *p == '\0') 336270655Sae continue; 337122615Sume i = sscanf(line, "%49s %49s %49s %49s %49s", 338122615Sume arg[0], arg[1], arg[2], arg[3], arg[4]); 33955505Sshin if (i < 2) { 340270655Sae warnx("bad line: %s", line); 34155505Sshin retval = 1; 34255505Sshin continue; 34355505Sshin } 34455505Sshin if (set(i, args)) 34555505Sshin retval = 1; 34655505Sshin } 34755505Sshin fclose(fp); 34855505Sshin return (retval); 34955505Sshin} 35055505Sshin 351287735Shrsstatic void 35255505Sshingetsocket() 35355505Sshin{ 35455505Sshin if (s < 0) { 35555505Sshin s = socket(PF_ROUTE, SOCK_RAW, 0); 35655505Sshin if (s < 0) { 357121156Sume err(1, "socket"); 358121156Sume /* NOTREACHED */ 35955505Sshin } 36055505Sshin } 36155505Sshin} 36255505Sshin 363287735Shrsstatic struct sockaddr_in6 so_mask = { 364287735Shrs .sin6_len = sizeof(so_mask), 365287735Shrs .sin6_family = AF_INET6 366287735Shrs}; 367287735Shrsstatic struct sockaddr_in6 blank_sin = { 368287735Shrs .sin6_len = sizeof(blank_sin), 369287735Shrs .sin6_family = AF_INET6 370287735Shrs}; 371287735Shrsstatic struct sockaddr_in6 sin_m; 372287735Shrsstatic struct sockaddr_dl blank_sdl = { 373287735Shrs .sdl_len = sizeof(blank_sdl), 374287735Shrs .sdl_family = AF_LINK 375287735Shrs}; 376287735Shrsstatic struct sockaddr_dl sdl_m; 377287735Shrsstatic time_t expire_time; 378287735Shrsstatic int flags, found_entry; 379287735Shrsstatic struct { 38055505Sshin struct rt_msghdr m_rtm; 38155505Sshin char m_space[512]; 382287735Shrs} m_rtmsg; 38355505Sshin 38455505Sshin/* 38555505Sshin * Set an individual neighbor cache entry 38655505Sshin */ 387287735Shrsstatic int 388287735Shrsset(int argc, char **argv) 38955505Sshin{ 39055505Sshin register struct sockaddr_in6 *sin = &sin_m; 39155505Sshin register struct sockaddr_dl *sdl; 39255505Sshin register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 39355505Sshin struct addrinfo hints, *res; 39455505Sshin int gai_error; 39555505Sshin u_char *ea; 39655505Sshin char *host = argv[0], *eaddr = argv[1]; 39755505Sshin 39855505Sshin getsocket(); 39955505Sshin argc -= 2; 40055505Sshin argv += 2; 40155505Sshin sdl_m = blank_sdl; 40255505Sshin sin_m = blank_sin; 40355505Sshin 40455505Sshin bzero(&hints, sizeof(hints)); 40555505Sshin hints.ai_family = AF_INET6; 40655505Sshin gai_error = getaddrinfo(host, NULL, &hints, &res); 40755505Sshin if (gai_error) { 40855505Sshin fprintf(stderr, "ndp: %s: %s\n", host, 40955505Sshin gai_strerror(gai_error)); 41055505Sshin return 1; 41155505Sshin } 41255505Sshin sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 413243903Shrs sin->sin6_scope_id = 414243903Shrs ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 41555505Sshin ea = (u_char *)LLADDR(&sdl_m); 41655505Sshin if (ndp_ether_aton(eaddr, ea) == 0) 41755505Sshin sdl_m.sdl_alen = 6; 41855505Sshin flags = expire_time = 0; 41955505Sshin while (argc-- > 0) { 42055505Sshin if (strncmp(argv[0], "temp", 4) == 0) { 421253999Shrs struct timeval now; 422121156Sume 423253999Shrs gettimeofday(&now, 0); 424253970Shrs expire_time = now.tv_sec + 20 * 60; 42562590Sitojun } else if (strncmp(argv[0], "proxy", 5) == 0) 42662590Sitojun flags |= RTF_ANNOUNCE; 42755505Sshin argv++; 42855505Sshin } 42955505Sshin if (rtmsg(RTM_GET) < 0) { 430121156Sume errx(1, "RTM_GET(%s) failed", host); 431121156Sume /* NOTREACHED */ 43255505Sshin } 43355505Sshin sin = (struct sockaddr_in6 *)(rtm + 1); 43455505Sshin sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 43555505Sshin if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 43655505Sshin if (sdl->sdl_family == AF_LINK && 437122615Sume !(rtm->rtm_flags & RTF_GATEWAY)) { 438122615Sume switch (sdl->sdl_type) { 439122615Sume case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 440122615Sume case IFT_ISO88024: case IFT_ISO88025: 441210936Sjhb case IFT_L2VLAN: case IFT_BRIDGE: 442122615Sume goto overwrite; 443122615Sume } 44455505Sshin } 44562590Sitojun fprintf(stderr, "set: cannot configure a new entry\n"); 44662590Sitojun return 1; 44755505Sshin } 44862590Sitojun 44955505Sshinoverwrite: 45055505Sshin if (sdl->sdl_family != AF_LINK) { 45155505Sshin printf("cannot intuit interface index and type for %s\n", host); 45255505Sshin return (1); 45355505Sshin } 45455505Sshin sdl_m.sdl_type = sdl->sdl_type; 45555505Sshin sdl_m.sdl_index = sdl->sdl_index; 45655505Sshin return (rtmsg(RTM_ADD)); 45755505Sshin} 45855505Sshin 45955505Sshin/* 46055505Sshin * Display an individual neighbor cache entry 46155505Sshin */ 462287735Shrsstatic void 463287735Shrsget(char *host) 46455505Sshin{ 46555505Sshin struct sockaddr_in6 *sin = &sin_m; 46655505Sshin struct addrinfo hints, *res; 46755505Sshin int gai_error; 46855505Sshin 46955505Sshin sin_m = blank_sin; 47055505Sshin bzero(&hints, sizeof(hints)); 47155505Sshin hints.ai_family = AF_INET6; 47255505Sshin gai_error = getaddrinfo(host, NULL, &hints, &res); 47355505Sshin if (gai_error) { 47455505Sshin fprintf(stderr, "ndp: %s: %s\n", host, 475121156Sume gai_strerror(gai_error)); 47655505Sshin return; 47755505Sshin } 47855505Sshin sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 479287735Shrs sin->sin6_scope_id = 480287735Shrs ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 481287735Shrs dump(sin, 0); 48255505Sshin if (found_entry == 0) { 48355505Sshin getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 484121156Sume sizeof(host_buf), NULL ,0, 485121156Sume (nflag ? NI_NUMERICHOST : 0)); 48655505Sshin printf("%s (%s) -- no entry\n", host, host_buf); 48755505Sshin exit(1); 48855505Sshin } 48955505Sshin} 49055505Sshin 49155505Sshin/* 49255505Sshin * Delete a neighbor cache entry 49355505Sshin */ 494287735Shrsstatic int 495287735Shrsdelete(char *host) 49655505Sshin{ 49755505Sshin struct sockaddr_in6 *sin = &sin_m; 49855505Sshin register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 499186119Sqingli register char *cp = m_rtmsg.m_space; 50055505Sshin struct sockaddr_dl *sdl; 50155505Sshin struct addrinfo hints, *res; 50255505Sshin int gai_error; 50355505Sshin 50455505Sshin getsocket(); 50555505Sshin sin_m = blank_sin; 50655505Sshin 50755505Sshin bzero(&hints, sizeof(hints)); 50855505Sshin hints.ai_family = AF_INET6; 50955505Sshin gai_error = getaddrinfo(host, NULL, &hints, &res); 51055505Sshin if (gai_error) { 51155505Sshin fprintf(stderr, "ndp: %s: %s\n", host, 512121156Sume gai_strerror(gai_error)); 51355505Sshin return 1; 51455505Sshin } 51555505Sshin sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 516243903Shrs sin->sin6_scope_id = 517243903Shrs ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 51855505Sshin if (rtmsg(RTM_GET) < 0) { 519121156Sume errx(1, "RTM_GET(%s) failed", host); 520121156Sume /* NOTREACHED */ 52155505Sshin } 52255505Sshin sin = (struct sockaddr_in6 *)(rtm + 1); 52355505Sshin sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 52455505Sshin if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 52555505Sshin if (sdl->sdl_family == AF_LINK && 52662590Sitojun !(rtm->rtm_flags & RTF_GATEWAY)) { 52778064Sume goto delete; 52855505Sshin } 52962590Sitojun fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 53062590Sitojun return 1; 53155505Sshin } 53262590Sitojun 53355505Sshindelete: 53455505Sshin if (sdl->sdl_family != AF_LINK) { 53555505Sshin printf("cannot locate %s\n", host); 53655505Sshin return (1); 53755505Sshin } 538186119Sqingli /* 539186119Sqingli * need to reinit the field because it has rt_key 540186119Sqingli * but we want the actual address 541186119Sqingli */ 542186119Sqingli NEXTADDR(RTA_DST, sin_m); 543186500Sqingli rtm->rtm_flags |= RTF_LLDATA; 54455505Sshin if (rtmsg(RTM_DELETE) == 0) { 545243903Shrs getnameinfo((struct sockaddr *)sin, 546243903Shrs sin->sin6_len, host_buf, 547121156Sume sizeof(host_buf), NULL, 0, 548121156Sume (nflag ? NI_NUMERICHOST : 0)); 54955505Sshin printf("%s (%s) deleted\n", host, host_buf); 55055505Sshin } 55155505Sshin 55255505Sshin return 0; 55355505Sshin} 55455505Sshin 555122615Sume#define W_ADDR 36 55678064Sume#define W_LL 17 55778064Sume#define W_IF 6 55878064Sume 55955505Sshin/* 56055505Sshin * Dump the entire neighbor cache 56155505Sshin */ 562287735Shrsstatic void 563287735Shrsdump(struct sockaddr_in6 *addr, int cflag) 56455505Sshin{ 56555505Sshin int mib[6]; 56655505Sshin size_t needed; 56762590Sitojun char *lim, *buf, *next; 56855505Sshin struct rt_msghdr *rtm; 56955505Sshin struct sockaddr_in6 *sin; 57055505Sshin struct sockaddr_dl *sdl; 57155505Sshin extern int h_errno; 57255505Sshin struct in6_nbrinfo *nbi; 573253999Shrs struct timeval now; 57455505Sshin int addrwidth; 57578064Sume int llwidth; 57678064Sume int ifwidth; 57762590Sitojun char flgbuf[8]; 57878064Sume char *ifname; 57955505Sshin 58055505Sshin /* Print header */ 58166865Ssumikawa if (!tflag && !cflag) 582122615Sume printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 58378064Sume W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 584122615Sume W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 58555505Sshin 58655505Sshinagain:; 58755505Sshin mib[0] = CTL_NET; 58855505Sshin mib[1] = PF_ROUTE; 58955505Sshin mib[2] = 0; 59055505Sshin mib[3] = AF_INET6; 59155505Sshin mib[4] = NET_RT_FLAGS; 592186119Sqingli#ifdef RTF_LLINFO 59355505Sshin mib[5] = RTF_LLINFO; 594186119Sqingli#else 595186119Sqingli mib[5] = 0; 596186119Sqingli#endif 59755505Sshin if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 59855505Sshin err(1, "sysctl(PF_ROUTE estimate)"); 59955505Sshin if (needed > 0) { 60055505Sshin if ((buf = malloc(needed)) == NULL) 601121156Sume err(1, "malloc"); 60255505Sshin if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 60355505Sshin err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 60455505Sshin lim = buf + needed; 60555505Sshin } else 60655505Sshin buf = lim = NULL; 60755505Sshin 60855505Sshin for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 60955505Sshin int isrouter = 0, prbs = 0; 61055505Sshin 61155505Sshin rtm = (struct rt_msghdr *)next; 61255505Sshin sin = (struct sockaddr_in6 *)(rtm + 1); 61355505Sshin sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 61478064Sume 61578064Sume /* 61678064Sume * Some OSes can produce a route that has the LINK flag but 61778064Sume * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 61878064Sume * and BSD/OS, where xx is not the interface identifier on 61978064Sume * lo0). Such routes entry would annoy getnbrinfo() below, 62078064Sume * so we skip them. 62178064Sume * XXX: such routes should have the GATEWAY flag, not the 622121156Sume * LINK flag. However, there is rotten routing software 62378064Sume * that advertises all routes that have the GATEWAY flag. 62478064Sume * Thus, KAME kernel intentionally does not set the LINK flag. 62578064Sume * What is to be fixed is not ndp, but such routing software 62678064Sume * (and the kernel workaround)... 62778064Sume */ 62878064Sume if (sdl->sdl_family != AF_LINK) 62978064Sume continue; 63078064Sume 631122615Sume if (!(rtm->rtm_flags & RTF_HOST)) 632122615Sume continue; 633122615Sume 63455505Sshin if (addr) { 635287735Shrs if (IN6_ARE_ADDR_EQUAL(&addr->sin6_addr, 636287735Shrs &sin->sin6_addr) == 0 || 637287735Shrs addr->sin6_scope_id != sin->sin6_scope_id) 63855505Sshin continue; 63955505Sshin found_entry = 1; 64055505Sshin } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 64155505Sshin continue; 64255505Sshin if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 64355505Sshin IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 64455505Sshin /* XXX: should scope id be filled in the kernel? */ 64555505Sshin if (sin->sin6_scope_id == 0) 64655505Sshin sin->sin6_scope_id = sdl->sdl_index; 64755505Sshin } 64855505Sshin getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 649121156Sume sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 650122615Sume if (cflag) { 65181366Ssumikawa#ifdef RTF_WASCLONED 65281366Ssumikawa if (rtm->rtm_flags & RTF_WASCLONED) 65381366Ssumikawa delete(host_buf); 654122615Sume#elif defined(RTF_CLONED) 655122615Sume if (rtm->rtm_flags & RTF_CLONED) 656122615Sume delete(host_buf); 65781366Ssumikawa#else 658294203Smelifaro if (rtm->rtm_flags & RTF_PINNED) 659294203Smelifaro continue; 66066865Ssumikawa delete(host_buf); 66181366Ssumikawa#endif 66266865Ssumikawa continue; 66366865Ssumikawa } 664253999Shrs gettimeofday(&now, 0); 66555505Sshin if (tflag) 666253970Shrs ts_print(&now); 66755505Sshin 66878064Sume addrwidth = strlen(host_buf); 66978064Sume if (addrwidth < W_ADDR) 67078064Sume addrwidth = W_ADDR; 67178064Sume llwidth = strlen(ether_str(sdl)); 67278064Sume if (W_ADDR + W_LL - addrwidth > llwidth) 67378064Sume llwidth = W_ADDR + W_LL - addrwidth; 67478064Sume ifname = if_indextoname(sdl->sdl_index, ifix_buf); 67578064Sume if (!ifname) 67678064Sume ifname = "?"; 67778064Sume ifwidth = strlen(ifname); 67878064Sume if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 67978064Sume ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 68055505Sshin 68178064Sume printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 68278064Sume llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 68355505Sshin 684293290Sbdrewery /* Print neighbor discovery specific information */ 68562590Sitojun nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 68655505Sshin if (nbi) { 687253970Shrs if (nbi->expire > now.tv_sec) { 68855505Sshin printf(" %-9.9s", 689253970Shrs sec2str(nbi->expire - now.tv_sec)); 69078064Sume } else if (nbi->expire == 0) 69155505Sshin printf(" %-9.9s", "permanent"); 69255505Sshin else 69355505Sshin printf(" %-9.9s", "expired"); 69455505Sshin 695121156Sume switch (nbi->state) { 696121156Sume case ND6_LLINFO_NOSTATE: 69755505Sshin printf(" N"); 69855505Sshin break; 69978064Sume#ifdef ND6_LLINFO_WAITDELETE 700121156Sume case ND6_LLINFO_WAITDELETE: 70155505Sshin printf(" W"); 70255505Sshin break; 70378064Sume#endif 704121156Sume case ND6_LLINFO_INCOMPLETE: 70555505Sshin printf(" I"); 70655505Sshin break; 707121156Sume case ND6_LLINFO_REACHABLE: 70855505Sshin printf(" R"); 70955505Sshin break; 710121156Sume case ND6_LLINFO_STALE: 71155505Sshin printf(" S"); 71255505Sshin break; 713121156Sume case ND6_LLINFO_DELAY: 71455505Sshin printf(" D"); 71555505Sshin break; 716121156Sume case ND6_LLINFO_PROBE: 71755505Sshin printf(" P"); 71855505Sshin break; 719121156Sume default: 72055505Sshin printf(" ?"); 72155505Sshin break; 72255505Sshin } 72355505Sshin 72455505Sshin isrouter = nbi->isrouter; 72555505Sshin prbs = nbi->asked; 72678064Sume } else { 72755505Sshin warnx("failed to get neighbor information"); 72855505Sshin printf(" "); 72955505Sshin } 73055505Sshin 73162590Sitojun /* 73262590Sitojun * other flags. R: router, P: proxy, W: ?? 73362590Sitojun */ 73462590Sitojun if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 73562590Sitojun snprintf(flgbuf, sizeof(flgbuf), "%s%s", 736121156Sume isrouter ? "R" : "", 737121156Sume (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 73862590Sitojun } else { 73962590Sitojun sin = (struct sockaddr_in6 *) 740121156Sume (sdl->sdl_len + (char *)sdl); 741122615Sume#if 0 /* W and P are mystery even for us */ 74262590Sitojun snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 743121156Sume isrouter ? "R" : "", 744121156Sume !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 745121156Sume (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 746121156Sume (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 747122615Sume#else 748122615Sume snprintf(flgbuf, sizeof(flgbuf), "%s%s", 749122615Sume isrouter ? "R" : "", 750122615Sume (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 751122615Sume#endif 75255505Sshin } 753122615Sume printf(" %s", flgbuf); 75455505Sshin 75555505Sshin if (prbs) 756122615Sume printf(" %d", prbs); 75755505Sshin 75855505Sshin printf("\n"); 75955505Sshin } 76078064Sume if (buf != NULL) 76178064Sume free(buf); 76255505Sshin 76355505Sshin if (repeat) { 76455505Sshin printf("\n"); 765125675Ssumikawa fflush(stdout); 76655505Sshin sleep(repeat); 76755505Sshin goto again; 76855505Sshin } 76955505Sshin} 77055505Sshin 77155505Sshinstatic struct in6_nbrinfo * 772287735Shrsgetnbrinfo(struct in6_addr *addr, int ifindex, int warning) 77355505Sshin{ 77455505Sshin static struct in6_nbrinfo nbi; 77555505Sshin int s; 77655505Sshin 77755505Sshin if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 77855505Sshin err(1, "socket"); 77955505Sshin 78055505Sshin bzero(&nbi, sizeof(nbi)); 78155505Sshin if_indextoname(ifindex, nbi.ifname); 78255505Sshin nbi.addr = *addr; 78355505Sshin if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 78462590Sitojun if (warning) 78562590Sitojun warn("ioctl(SIOCGNBRINFO_IN6)"); 78655505Sshin close(s); 78755505Sshin return(NULL); 78855505Sshin } 78955505Sshin 79055505Sshin close(s); 79155505Sshin return(&nbi); 79255505Sshin} 79355505Sshin 79455505Sshinstatic char * 795217140Sdelphijether_str(struct sockaddr_dl *sdl) 79655505Sshin{ 797121156Sume static char hbuf[NI_MAXHOST]; 79855505Sshin 799219819Sjeff if (sdl->sdl_alen == ETHER_ADDR_LEN) { 800217140Sdelphij strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)), 801217140Sdelphij sizeof(hbuf)); 802219819Sjeff } else if (sdl->sdl_alen) { 803219819Sjeff int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0; 804219819Sjeff snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n); 805219819Sjeff } else 806121156Sume snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 80755505Sshin 808121156Sume return(hbuf); 80955505Sshin} 81055505Sshin 811287735Shrsstatic int 812287735Shrsndp_ether_aton(char *a, u_char *n) 81355505Sshin{ 81455505Sshin int i, o[6]; 81555505Sshin 81655505Sshin i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 817121156Sume &o[3], &o[4], &o[5]); 81855505Sshin if (i != 6) { 81955505Sshin fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 82055505Sshin return (1); 82155505Sshin } 822121156Sume for (i = 0; i < 6; i++) 82355505Sshin n[i] = o[i]; 82455505Sshin return (0); 82555505Sshin} 82655505Sshin 827287735Shrsstatic void 82855505Sshinusage() 82955505Sshin{ 830122615Sume printf("usage: ndp [-nt] hostname\n"); 831122615Sume printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 83278064Sume printf(" ndp [-nt] -A wait\n"); 833122615Sume printf(" ndp [-nt] -d hostname\n"); 834122615Sume printf(" ndp [-nt] -f filename\n"); 835122615Sume printf(" ndp [-nt] -i interface [flags...]\n"); 83662590Sitojun#ifdef SIOCSDEFIFACE_IN6 837122615Sume printf(" ndp [-nt] -I [interface|delete]\n"); 83862590Sitojun#endif 839122615Sume printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 84055505Sshin exit(1); 84155505Sshin} 84255505Sshin 843287735Shrsstatic int 844287735Shrsrtmsg(int cmd) 84555505Sshin{ 84655505Sshin static int seq; 84755505Sshin int rlen; 84855505Sshin register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 84955505Sshin register char *cp = m_rtmsg.m_space; 85055505Sshin register int l; 85155505Sshin 85255505Sshin errno = 0; 85355505Sshin if (cmd == RTM_DELETE) 85455505Sshin goto doit; 85555505Sshin bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 85655505Sshin rtm->rtm_flags = flags; 85755505Sshin rtm->rtm_version = RTM_VERSION; 85855505Sshin 85955505Sshin switch (cmd) { 86055505Sshin default: 86155505Sshin fprintf(stderr, "ndp: internal wrong cmd\n"); 86255505Sshin exit(1); 86355505Sshin case RTM_ADD: 86455505Sshin rtm->rtm_addrs |= RTA_GATEWAY; 865122615Sume if (expire_time) { 866122615Sume rtm->rtm_rmx.rmx_expire = expire_time; 867122615Sume rtm->rtm_inits = RTV_EXPIRE; 868122615Sume } 869186500Sqingli rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA); 870151473Ssuz#if 0 /* we don't support ipv6addr/128 type proxying */ 87162590Sitojun if (rtm->rtm_flags & RTF_ANNOUNCE) { 87262590Sitojun rtm->rtm_flags &= ~RTF_HOST; 873124241Ssuz rtm->rtm_addrs |= RTA_NETMASK; 87462590Sitojun } 875151473Ssuz#endif 87655505Sshin /* FALLTHROUGH */ 87755505Sshin case RTM_GET: 87855505Sshin rtm->rtm_addrs |= RTA_DST; 87955505Sshin } 88055505Sshin 88155505Sshin NEXTADDR(RTA_DST, sin_m); 88255505Sshin NEXTADDR(RTA_GATEWAY, sdl_m); 883151473Ssuz#if 0 /* we don't support ipv6addr/128 type proxying */ 88462590Sitojun memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 88555505Sshin NEXTADDR(RTA_NETMASK, so_mask); 886151473Ssuz#endif 88755505Sshin 88855505Sshin rtm->rtm_msglen = cp - (char *)&m_rtmsg; 88955505Sshindoit: 89055505Sshin l = rtm->rtm_msglen; 89155505Sshin rtm->rtm_seq = ++seq; 89255505Sshin rtm->rtm_type = cmd; 89355505Sshin if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 89455505Sshin if (errno != ESRCH || cmd != RTM_DELETE) { 895121156Sume err(1, "writing to routing socket"); 896121156Sume /* NOTREACHED */ 89755505Sshin } 89855505Sshin } 89955505Sshin do { 90055505Sshin l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 90155505Sshin } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 90255505Sshin if (l < 0) 90355505Sshin (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 90455505Sshin strerror(errno)); 90555505Sshin return (0); 90655505Sshin} 90755505Sshin 908287735Shrsstatic void 909287735Shrsifinfo(char *ifname, int argc, char **argv) 91055505Sshin{ 91155505Sshin struct in6_ndireq nd; 91262590Sitojun int i, s; 91362590Sitojun u_int32_t newflags; 91478064Sume#ifdef IPV6CTL_USETEMPADDR 91578064Sume u_int8_t nullbuf[8]; 91678064Sume#endif 91755505Sshin 91855505Sshin if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 919121156Sume err(1, "socket"); 920121156Sume /* NOTREACHED */ 92155505Sshin } 92255505Sshin bzero(&nd, sizeof(nd)); 923121156Sume strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 92455505Sshin if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 925121156Sume err(1, "ioctl(SIOCGIFINFO_IN6)"); 926121156Sume /* NOTREACHED */ 927122615Sume } 92862590Sitojun#define ND nd.ndi 92962590Sitojun newflags = ND.flags; 930122615Sume for (i = 0; i < argc; i++) { 93162590Sitojun int clear = 0; 93262590Sitojun char *cp = argv[i]; 93362590Sitojun 93462590Sitojun if (*cp == '-') { 93562590Sitojun clear = 1; 93662590Sitojun cp++; 93762590Sitojun } 93862590Sitojun 93962590Sitojun#define SETFLAG(s, f) \ 94062590Sitojun do {\ 94162590Sitojun if (strcmp(cp, (s)) == 0) {\ 94262590Sitojun if (clear)\ 94362590Sitojun newflags &= ~(f);\ 94462590Sitojun else\ 94562590Sitojun newflags |= (f);\ 94662590Sitojun }\ 94762590Sitojun } while (0) 948151468Ssuz/* 949151468Ssuz * XXX: this macro is not 100% correct, in that it matches "nud" against 950151468Ssuz * "nudbogus". But we just let it go since this is minor. 951151468Ssuz */ 952151468Ssuz#define SETVALUE(f, v) \ 953151468Ssuz do { \ 954151468Ssuz char *valptr; \ 955151468Ssuz unsigned long newval; \ 956151468Ssuz v = 0; /* unspecified */ \ 957151468Ssuz if (strncmp(cp, f, strlen(f)) == 0) { \ 958151468Ssuz valptr = strchr(cp, '='); \ 959151468Ssuz if (valptr == NULL) \ 960151468Ssuz err(1, "syntax error in %s field", (f)); \ 961151468Ssuz errno = 0; \ 962151468Ssuz newval = strtoul(++valptr, NULL, 0); \ 963151468Ssuz if (errno) \ 964151468Ssuz err(1, "syntax error in %s's value", (f)); \ 965151468Ssuz v = newval; \ 966151468Ssuz } \ 967151468Ssuz } while (0) 968151468Ssuz 969151474Ssuz SETFLAG("disabled", ND6_IFF_IFDISABLED); 97062590Sitojun SETFLAG("nud", ND6_IFF_PERFORMNUD); 971118498Sume#ifdef ND6_IFF_ACCEPT_RTADV 972118498Sume SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 973118498Sume#endif 974197138Shrs#ifdef ND6_IFF_AUTO_LINKLOCAL 975197138Shrs SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL); 976197138Shrs#endif 977245230Sume#ifdef ND6_IFF_NO_PREFER_IFACE 978245230Sume SETFLAG("no_prefer_iface", ND6_IFF_NO_PREFER_IFACE); 979245230Sume#endif 980151468Ssuz SETVALUE("basereachable", ND.basereachable); 981151468Ssuz SETVALUE("retrans", ND.retrans); 982151468Ssuz SETVALUE("curhlim", ND.chlim); 98362590Sitojun 98462590Sitojun ND.flags = newflags; 985151468Ssuz if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) { 986151468Ssuz err(1, "ioctl(SIOCSIFINFO_IN6)"); 987121156Sume /* NOTREACHED */ 98862590Sitojun } 98962590Sitojun#undef SETFLAG 990151468Ssuz#undef SETVALUE 99162590Sitojun } 99262590Sitojun 993121162Sume if (!ND.initialized) { 994121162Sume errx(1, "%s: not initialized yet", ifname); 995121162Sume /* NOTREACHED */ 996121162Sume } 997121162Sume 998151468Ssuz if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 999151468Ssuz err(1, "ioctl(SIOCGIFINFO_IN6)"); 1000151468Ssuz /* NOTREACHED */ 1001151468Ssuz } 100255505Sshin printf("linkmtu=%d", ND.linkmtu); 1003121471Sume printf(", maxmtu=%d", ND.maxmtu); 100455505Sshin printf(", curhlim=%d", ND.chlim); 100555505Sshin printf(", basereachable=%ds%dms", 1006121156Sume ND.basereachable / 1000, ND.basereachable % 1000); 100755505Sshin printf(", reachable=%ds", ND.reachable); 100862590Sitojun printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 100978064Sume#ifdef IPV6CTL_USETEMPADDR 101078064Sume memset(nullbuf, 0, sizeof(nullbuf)); 101178064Sume if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 101278064Sume int j; 101378064Sume u_int8_t *rbuf; 101478064Sume 101578064Sume for (i = 0; i < 3; i++) { 1016121156Sume switch (i) { 101778064Sume case 0: 101878064Sume printf("\nRandom seed(0): "); 101978064Sume rbuf = ND.randomseed0; 102078064Sume break; 102178064Sume case 1: 102278064Sume printf("\nRandom seed(1): "); 102378064Sume rbuf = ND.randomseed1; 102478064Sume break; 102578064Sume case 2: 102678064Sume printf("\nRandom ID: "); 102778064Sume rbuf = ND.randomid; 102878064Sume break; 1029151472Ssuz default: 1030151472Ssuz errx(1, "impossible case for tempaddr display"); 103178064Sume } 103278064Sume for (j = 0; j < 8; j++) 103378064Sume printf("%02x", rbuf[j]); 103478064Sume } 103578064Sume } 103678064Sume#endif 103762590Sitojun if (ND.flags) { 103862590Sitojun printf("\nFlags: "); 1039151474Ssuz#ifdef ND6_IFF_IFDISABLED 1040151474Ssuz if ((ND.flags & ND6_IFF_IFDISABLED)) 1041151474Ssuz printf("disabled "); 1042151474Ssuz#endif 1043118498Sume if ((ND.flags & ND6_IFF_PERFORMNUD)) 1044118498Sume printf("nud "); 1045118498Sume#ifdef ND6_IFF_ACCEPT_RTADV 1046118498Sume if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1047118498Sume printf("accept_rtadv "); 1048118498Sume#endif 1049197138Shrs#ifdef ND6_IFF_AUTO_LINKLOCAL 1050197138Shrs if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL)) 1051197138Shrs printf("auto_linklocal "); 1052197138Shrs#endif 1053245230Sume#ifdef ND6_IFF_NO_PREFER_IFACE 1054245230Sume if ((ND.flags & ND6_IFF_NO_PREFER_IFACE)) 1055245230Sume printf("no_prefer_iface "); 1056245230Sume#endif 1057122615Sume } 105862590Sitojun putc('\n', stdout); 105955505Sshin#undef ND 1060121156Sume 106155505Sshin close(s); 106255505Sshin} 106355505Sshin 106478064Sume#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 106578064Sume#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 106678064Sume#endif 106778064Sume 1068287735Shrsstatic void 106955505Sshinrtrlist() 107055505Sshin{ 107178064Sume int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 107278064Sume char *buf; 107378064Sume struct in6_defrouter *p, *ep; 107478064Sume size_t l; 1075253999Shrs struct timeval now; 107678064Sume 107778064Sume if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 107878064Sume err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 107978064Sume /*NOTREACHED*/ 108078064Sume } 1081151472Ssuz if (l == 0) 1082151472Ssuz return; 108378064Sume buf = malloc(l); 108478064Sume if (!buf) { 1085121156Sume err(1, "malloc"); 108678064Sume /*NOTREACHED*/ 108778064Sume } 108878064Sume if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 108978064Sume err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 109078064Sume /*NOTREACHED*/ 109178064Sume } 109278064Sume 109378064Sume ep = (struct in6_defrouter *)(buf + l); 109478064Sume for (p = (struct in6_defrouter *)buf; p < ep; p++) { 109578064Sume int rtpref; 109678064Sume 109778064Sume if (getnameinfo((struct sockaddr *)&p->rtaddr, 109878064Sume p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1099121156Sume (nflag ? NI_NUMERICHOST : 0)) != 0) 110078064Sume strlcpy(host_buf, "?", sizeof(host_buf)); 1101121156Sume 110278064Sume printf("%s if=%s", host_buf, 1103121156Sume if_indextoname(p->if_index, ifix_buf)); 110478064Sume printf(", flags=%s%s", 1105121156Sume p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1106121156Sume p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 110778064Sume rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 110878064Sume printf(", pref=%s", rtpref_str[rtpref]); 1109121156Sume 1110253999Shrs gettimeofday(&now, 0); 111178064Sume if (p->expire == 0) 111278064Sume printf(", expire=Never\n"); 111378064Sume else 111478064Sume printf(", expire=%s\n", 1115253970Shrs sec2str(p->expire - now.tv_sec)); 111678064Sume } 111778064Sume free(buf); 111855505Sshin} 111955505Sshin 1120287735Shrsstatic void 112155505Sshinplist() 112255505Sshin{ 112378064Sume int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 112478064Sume char *buf; 112578064Sume struct in6_prefix *p, *ep, *n; 112678064Sume struct sockaddr_in6 *advrtr; 112778064Sume size_t l; 1128253999Shrs struct timeval now; 112978064Sume const int niflags = NI_NUMERICHOST; 113078064Sume int ninflags = nflag ? NI_NUMERICHOST : 0; 113178064Sume char namebuf[NI_MAXHOST]; 113278064Sume 113378064Sume if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 113478064Sume err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 113578064Sume /*NOTREACHED*/ 113678064Sume } 113778064Sume buf = malloc(l); 113878064Sume if (!buf) { 1139121156Sume err(1, "malloc"); 114078064Sume /*NOTREACHED*/ 114178064Sume } 114278064Sume if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 114378064Sume err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 114478064Sume /*NOTREACHED*/ 114578064Sume } 114678064Sume 114778064Sume ep = (struct in6_prefix *)(buf + l); 114878064Sume for (p = (struct in6_prefix *)buf; p < ep; p = n) { 114978064Sume advrtr = (struct sockaddr_in6 *)(p + 1); 115078064Sume n = (struct in6_prefix *)&advrtr[p->advrtrs]; 115178064Sume 115278064Sume if (getnameinfo((struct sockaddr *)&p->prefix, 115378064Sume p->prefix.sin6_len, namebuf, sizeof(namebuf), 115478064Sume NULL, 0, niflags) != 0) 115578064Sume strlcpy(namebuf, "?", sizeof(namebuf)); 115678064Sume printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1157121156Sume if_indextoname(p->if_index, ifix_buf)); 115878064Sume 1159253999Shrs gettimeofday(&now, 0); 116078064Sume /* 116178064Sume * meaning of fields, especially flags, is very different 116278064Sume * by origin. notify the difference to the users. 116378064Sume */ 116478064Sume printf("flags=%s%s%s%s%s", 1165121156Sume p->raflags.onlink ? "L" : "", 1166121156Sume p->raflags.autonomous ? "A" : "", 1167121156Sume (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1168121156Sume (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 116978064Sume#ifdef NDPRF_HOME 1170121156Sume (p->flags & NDPRF_HOME) != 0 ? "H" : "" 117178064Sume#else 1172121156Sume "" 117378064Sume#endif 1174121156Sume ); 117578064Sume if (p->vltime == ND6_INFINITE_LIFETIME) 117678064Sume printf(" vltime=infinity"); 117778064Sume else 1178122615Sume printf(" vltime=%lu", (unsigned long)p->vltime); 117978064Sume if (p->pltime == ND6_INFINITE_LIFETIME) 118078064Sume printf(", pltime=infinity"); 118178064Sume else 1182122615Sume printf(", pltime=%lu", (unsigned long)p->pltime); 118378064Sume if (p->expire == 0) 118478064Sume printf(", expire=Never"); 1185253970Shrs else if (p->expire >= now.tv_sec) 118678064Sume printf(", expire=%s", 1187253970Shrs sec2str(p->expire - now.tv_sec)); 118878064Sume else 118978064Sume printf(", expired"); 119078064Sume printf(", ref=%d", p->refcnt); 119178064Sume printf("\n"); 119278064Sume /* 119378064Sume * "advertising router" list is meaningful only if the prefix 119478064Sume * information is from RA. 119578064Sume */ 119678064Sume if (p->advrtrs) { 119778064Sume int j; 119878064Sume struct sockaddr_in6 *sin6; 119978064Sume 1200122615Sume sin6 = advrtr; 120178064Sume printf(" advertised by\n"); 120278064Sume for (j = 0; j < p->advrtrs; j++) { 120378064Sume struct in6_nbrinfo *nbi; 120478064Sume 120578064Sume if (getnameinfo((struct sockaddr *)sin6, 120678064Sume sin6->sin6_len, namebuf, sizeof(namebuf), 120778064Sume NULL, 0, ninflags) != 0) 120878064Sume strlcpy(namebuf, "?", sizeof(namebuf)); 120978064Sume printf(" %s", namebuf); 121078064Sume 1211121156Sume nbi = getnbrinfo(&sin6->sin6_addr, 1212121156Sume p->if_index, 0); 121378064Sume if (nbi) { 1214121156Sume switch (nbi->state) { 121578064Sume case ND6_LLINFO_REACHABLE: 121678064Sume case ND6_LLINFO_STALE: 121778064Sume case ND6_LLINFO_DELAY: 121878064Sume case ND6_LLINFO_PROBE: 121978064Sume printf(" (reachable)\n"); 122078064Sume break; 122178064Sume default: 122278064Sume printf(" (unreachable)\n"); 122378064Sume } 122478064Sume } else 122578064Sume printf(" (no neighbor state)\n"); 122678064Sume sin6++; 122778064Sume } 122878064Sume } else 122978064Sume printf(" No advertising router\n"); 123078064Sume } 123178064Sume free(buf); 123255505Sshin} 123355505Sshin 1234287735Shrsstatic void 123555505Sshinpfx_flush() 123655505Sshin{ 123755505Sshin char dummyif[IFNAMSIZ+8]; 123855505Sshin int s; 123955505Sshin 124055505Sshin if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 124155505Sshin err(1, "socket"); 1242121156Sume strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 124355505Sshin if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1244121156Sume err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 124555505Sshin} 124655505Sshin 1247287735Shrsstatic void 124855505Sshinrtr_flush() 124955505Sshin{ 125055505Sshin char dummyif[IFNAMSIZ+8]; 125155505Sshin int s; 125255505Sshin 125355505Sshin if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 125455505Sshin err(1, "socket"); 1255121156Sume strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 125655505Sshin if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1257121156Sume err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 125862590Sitojun 125962590Sitojun close(s); 126055505Sshin} 126155505Sshin 1262287735Shrsstatic void 126355505Sshinharmonize_rtr() 126455505Sshin{ 126555505Sshin char dummyif[IFNAMSIZ+8]; 126655505Sshin int s; 126755505Sshin 126862590Sitojun if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 126962590Sitojun err(1, "socket"); 1270121156Sume strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 127162590Sitojun if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1272121156Sume err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 127362590Sitojun 127462590Sitojun close(s); 127555505Sshin} 127655505Sshin 127762590Sitojun#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 127862590Sitojunstatic void 1279287735Shrssetdefif(char *ifname) 128062590Sitojun{ 128162590Sitojun struct in6_ndifreq ndifreq; 128262590Sitojun unsigned int ifindex; 128362590Sitojun 128462590Sitojun if (strcasecmp(ifname, "delete") == 0) 128562590Sitojun ifindex = 0; 128662590Sitojun else { 128762590Sitojun if ((ifindex = if_nametoindex(ifname)) == 0) 128862590Sitojun err(1, "failed to resolve i/f index for %s", ifname); 128962590Sitojun } 129062590Sitojun 129162590Sitojun if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 129262590Sitojun err(1, "socket"); 129362590Sitojun 1294121156Sume strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 129562590Sitojun ndifreq.ifindex = ifindex; 129662590Sitojun 129762590Sitojun if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1298121156Sume err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 129962590Sitojun 130062590Sitojun close(s); 130162590Sitojun} 130262590Sitojun 130362590Sitojunstatic void 130462590Sitojungetdefif() 130562590Sitojun{ 130662590Sitojun struct in6_ndifreq ndifreq; 130762590Sitojun char ifname[IFNAMSIZ+8]; 130862590Sitojun 130962590Sitojun if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 131062590Sitojun err(1, "socket"); 131162590Sitojun 131262590Sitojun memset(&ndifreq, 0, sizeof(ndifreq)); 1313121156Sume strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 131462590Sitojun 131562590Sitojun if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1316121156Sume err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 131762590Sitojun 131862590Sitojun if (ndifreq.ifindex == 0) 131962590Sitojun printf("No default interface.\n"); 132062590Sitojun else { 132162590Sitojun if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 132262590Sitojun err(1, "failed to resolve ifname for index %lu", 132362590Sitojun ndifreq.ifindex); 132462590Sitojun printf("ND default interface = %s\n", ifname); 132562590Sitojun } 132662590Sitojun 132762590Sitojun close(s); 132862590Sitojun} 132962590Sitojun#endif 133062590Sitojun 133155505Sshinstatic char * 1332287735Shrssec2str(time_t total) 133355505Sshin{ 133455505Sshin static char result[256]; 133555505Sshin int days, hours, mins, secs; 133655505Sshin int first = 1; 133755505Sshin char *p = result; 1338121156Sume char *ep = &result[sizeof(result)]; 1339121156Sume int n; 134055505Sshin 134155505Sshin days = total / 3600 / 24; 134255505Sshin hours = (total / 3600) % 24; 134355505Sshin mins = (total / 60) % 60; 134455505Sshin secs = total % 60; 134555505Sshin 134655505Sshin if (days) { 134755505Sshin first = 0; 1348121156Sume n = snprintf(p, ep - p, "%dd", days); 1349121156Sume if (n < 0 || n >= ep - p) 1350121156Sume return "?"; 1351121156Sume p += n; 135255505Sshin } 135355505Sshin if (!first || hours) { 135455505Sshin first = 0; 1355121156Sume n = snprintf(p, ep - p, "%dh", hours); 1356121156Sume if (n < 0 || n >= ep - p) 1357121156Sume return "?"; 1358121156Sume p += n; 135955505Sshin } 136055505Sshin if (!first || mins) { 136155505Sshin first = 0; 1362121156Sume n = snprintf(p, ep - p, "%dm", mins); 1363121156Sume if (n < 0 || n >= ep - p) 1364121156Sume return "?"; 1365121156Sume p += n; 136655505Sshin } 1367121156Sume snprintf(p, ep - p, "%ds", secs); 136855505Sshin 136955505Sshin return(result); 137055505Sshin} 137155505Sshin 137255505Sshin/* 137355505Sshin * Print the timestamp 137455505Sshin * from tcpdump/util.c 137555505Sshin */ 137655505Sshinstatic void 1377287735Shrsts_print(const struct timeval *tvp) 137855505Sshin{ 137955505Sshin int s; 138055505Sshin 138155505Sshin /* Default */ 1382253999Shrs s = (tvp->tv_sec + thiszone) % 86400; 138355505Sshin (void)printf("%02d:%02d:%02d.%06u ", 1384253999Shrs s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 138555505Sshin} 1386186119Sqingli 1387186119Sqingli#undef NEXTADDR 1388