diff options
| -rw-r--r-- | usr.sbin/ndp/gnuc.h | 1 | ||||
| -rw-r--r-- | usr.sbin/ndp/ndp.8 | 145 | ||||
| -rw-r--r-- | usr.sbin/ndp/ndp.c | 1082 |
3 files changed, 1228 insertions, 0 deletions
diff --git a/usr.sbin/ndp/gnuc.h b/usr.sbin/ndp/gnuc.h new file mode 100644 index 00000000000..65e330a390f --- /dev/null +++ b/usr.sbin/ndp/gnuc.h @@ -0,0 +1 @@ +/* this is dummy to pacify gmt2local.c. */ diff --git a/usr.sbin/ndp/ndp.8 b/usr.sbin/ndp/ndp.8 new file mode 100644 index 00000000000..1d0a736d0a2 --- /dev/null +++ b/usr.sbin/ndp/ndp.8 @@ -0,0 +1,145 @@ +.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the project nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $Id: ndp.8,v 1.1 1999/12/10 07:17:07 itojun Exp $ +.\" +.Dd May 17, 1998 +.Dt NDP 8 +.Os KAME +.\" +.Sh NAME +.Nm ndp +.Nd control/diagnose IPv6 neighbor discovery protocol +.\" +.Sh SYNOPSIS +.Nm ndp +.Fl a +.Op Fl ntl +.Nm ndp +.Fl A Ar wait +.Op Fl ntl +.Nm ndp +.Fl c +.Op Fl nt +.Nm ndp +.Fl d +.Op Fl nt +.Ar hostname +.Nm ndp +.Fl f +.Op Fl nt +.Ar filename +.Nm ndp +.Fl H +.Nm ndp +.Fl I +.Ar interface +.Nm ndp +.Fl i +.Ar interface +.Nm ndp +.Fl p +.Nm ndp +.Fl P +.Nm ndp +.Fl r +.Nm ndp +.Fl R +.Nm ndp +.Fl s +.Op Fl nt +.Ar nodename +.Ar ether_addr +.Op temp +.\" +.Sh DESCRIPTION +.Nm +command manipulates the address mapping table +used by Neighbor Discovery Protocol (NDP). +.Bl -tag -width Ds +.It Fl a +Dump the currently existing NDP entries. +.It Fl A Ar wait +Repeat +.Fl a +.Pq dump NDP entries +every +.Ar wait +seconds. +.It Fl c +Erase all the NDP entries. +.It Fl d +Delete specified NDP entry. +.It Fl f +Parse the file specified by +.Ar filename . +.It Fl H +Harmonize consistency between the routing table and the default router +list; install the top entry of the list into the kernel routing table. +.It Fl I +.Ar interface +Specifies the default interface used as the default route when +there is no default router. +.It Fl i +.Ar interface +view ND information for specified interface. +.It Fl l +Do not truncate numeric IPv6 address. +.It Fl n +Do not try to resolve numeric address to hostname. +.It Fl p +Show prefix list. +.It Fl P +Flush all the entries in the prefix list. +.It Fl r +Show default router list. +.It Fl R +Flush all the entries in the default router list. +.It Fl s +Register a NDP entry for a node. +.It Fl t +Print timestamp on each entries, +to make it possible to merge output with +.Xr tcpdump 1 . +Most useful when used with +.Fl A . +.El +.\" +.Sh RETURN VALUES +.Nm Ndp +will exit with 0 on success, and non-zero on errors. +.\" +.Sh SEE ALSO +.Xr arp 8 +.\" +.Sh HISTORY +The +.Nm +command first appeared in WIDE Hydrangea IPv6 protocol stack kit. +.\" +.\" .Sh BUGS +.\" (to be written) diff --git a/usr.sbin/ndp/ndp.c b/usr.sbin/ndp/ndp.c new file mode 100644 index 00000000000..36ded8484f7 --- /dev/null +++ b/usr.sbin/ndp/ndp.c @@ -0,0 +1,1082 @@ +/* + * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * Copyright (c) 1984, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Sun Microsystems, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Based on: + * "@(#) Copyright (c) 1984, 1993\n\ + * The Regents of the University of California. All rights reserved.\n"; + * + * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; + */ + +/* + * ndp - display, set, delete and flush neighbor cache + */ + + +#include <sys/param.h> +#include <sys/file.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/sysctl.h> +#include <sys/time.h> + +#include <net/if.h> +#if defined(__FreeBSD__) && __FreeBSD__ >= 3 +#include <net/if_var.h> +#endif /* __FreeBSD__ >= 3 */ +#include <net/if_dl.h> +#include <net/if_types.h> +#include <net/route.h> + +#include <netinet/in.h> +#ifndef __NetBSD__ +#include <netinet/if_ether.h> +#endif + +#include <netinet/icmp6.h> +#include <netinet6/in6_var.h> +#include <netinet6/nd6.h> + +#include <arpa/inet.h> + +#include <netdb.h> +#include <errno.h> +#include <nlist.h> +#include <stdio.h> +#include <string.h> +#include <paths.h> +#include <err.h> +#include <stdlib.h> +#include <fcntl.h> +#include <unistd.h> +#include "gmt2local.h" + +#ifndef NI_WITHSCOPEID +#define NI_WITHSCOPEID 0 +#endif + +/* packing rule for routing socket */ +#define ROUNDUP(a) \ + ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) +#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) + +extern int errno; +static int pid; +static int fflag; +static int nflag; +static int tflag; +static int32_t thiszone; /* time difference with gmt */ +static int s = -1; +static int repeat = 0; +static int lflag = 0; + +char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ +char host_buf[NI_MAXHOST]; /* getnameinfo() */ +char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ + +int main __P((int, char **)); +int file __P((char *)); +void getsocket __P((void)); +int set __P((int, char **)); +void get __P((char *)); +int delete __P((char *)); +void dump __P((struct in6_addr *)); +static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr, + int ifindex, int)); +static char *ether_str __P((struct sockaddr_dl *)); +int ndp_ether_aton __P((char *, u_char *)); +void usage __P((void)); +int rtmsg __P((int)); +void ifinfo __P((char *)); +void rtrlist __P((void)); +void plist __P((void)); +void pfx_flush __P((void)); +void rtr_flush __P((void)); +void harmonize_rtr __P((void)); +#ifdef SIOCSDEFIFACE_IN6 +static void setdefif __P((char *)); +#endif +static char *sec2str __P((time_t t)); +static char *ether_str __P((struct sockaddr_dl *sdl)); +static void ts_print __P((const struct timeval *)); + +int +main(argc, argv) + int argc; + char **argv; +{ + int ch; + int aflag = 0, cflag = 0, dflag = 0, sflag = 0, Hflag = 0, + pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; + extern char *optarg; + extern int optind; + + pid = getpid(); + thiszone = gmt2local(0); + while ((ch = getopt(argc, argv, "acndfI:ilprstA:HPR")) != EOF) + switch ((char)ch) { + case 'a': + aflag = 1; + break; + case 'c': + fflag = 1; + cflag = 1; + break; + case 'd': + dflag = 1; + break; + case 'I': +#ifdef SIOCSDEFIFACE_IN6 + setdefif(optarg); + exit(0); +#else + errx(1, "not supported yet"); + /*NOTREACHED*/ +#endif + case 'i' : + if (argc != 3) + usage(); + ifinfo(argv[2]); + exit(0); + case 'n': + nflag = 1; + continue; + case 'p': + pflag = 1; + break; + case 'f' : + if (argc != 3) + usage(); + file(argv[2]); + exit(0); + case 'l' : + lflag = 1; + break; + case 'r' : + rflag = 1; + break; + case 's': + sflag = 1; + break; + case 't': + tflag = 1; + break; + case 'A': + aflag = 1; + repeat = atoi(optarg); + if (repeat < 0) + usage(); + break; + case 'H' : + Hflag = 1; + break; + case 'P': + Pflag = 1; + break; + case 'R': + Rflag = 1; + break; + default: + usage(); + } + + argc -= optind; + argv += optind; + + if (aflag || cflag) { + dump(0); + exit(0); + } + if (dflag) { + if (argc != 1) + usage(); + delete(argv[0]); + } + if (pflag) { + plist(); + exit(0); + } + if (rflag) { + rtrlist(); + exit(0); + } + if (sflag) { + if (argc < 2 || argc > 4) + usage(); + exit(set(argc, argv) ? 1 : 0); + } + if (Hflag) { + harmonize_rtr(); + exit(0); + } + if (Pflag) { + pfx_flush(); + exit(0); + } + if (Rflag) { + rtr_flush(); + exit(0); + } + + if (argc != 1) + usage(); + get(argv[0]); + exit(0); +} + +/* + * Process a file to set standard ndp entries + */ +int +file(name) + char *name; +{ + FILE *fp; + int i, retval; + char line[100], arg[5][50], *args[5]; + + if ((fp = fopen(name, "r")) == NULL) { + fprintf(stderr, "ndp: cannot open %s\n", name); + exit(1); + } + args[0] = &arg[0][0]; + args[1] = &arg[1][0]; + args[2] = &arg[2][0]; + args[3] = &arg[3][0]; + args[4] = &arg[4][0]; + retval = 0; + while(fgets(line, 100, fp) != NULL) { + i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], + arg[3], arg[4]); + if (i < 2) { + fprintf(stderr, "ndp: bad line: %s\n", line); + retval = 1; + continue; + } + if (set(i, args)) + retval = 1; + } + fclose(fp); + return (retval); +} + +void +getsocket() +{ + if (s < 0) { + s = socket(PF_ROUTE, SOCK_RAW, 0); + if (s < 0) { + perror("ndp: socket"); + exit(1); + } + } +} + +struct sockaddr_in so_mask = {8, 0, 0, { 0xffffffff}}; +struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; +struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; +int expire_time, flags, found_entry; +struct { + struct rt_msghdr m_rtm; + char m_space[512]; +} m_rtmsg; + +/* + * Set an individual neighbor cache entry + */ +int +set(argc, argv) + int argc; + char **argv; +{ + register struct sockaddr_in6 *sin = &sin_m; + register struct sockaddr_dl *sdl; + register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); + struct addrinfo hints, *res; + int gai_error; + u_char *ea; + char *host = argv[0], *eaddr = argv[1]; + + getsocket(); + argc -= 2; + argv += 2; + sdl_m = blank_sdl; + sin_m = blank_sin; + + bzero(&hints, sizeof(hints)); + hints.ai_family = AF_INET6; + gai_error = getaddrinfo(host, NULL, &hints, &res); + if (gai_error) { + fprintf(stderr, "ndp: %s: %s\n", host, + gai_strerror(gai_error)); + return 1; + } + sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; + ea = (u_char *)LLADDR(&sdl_m); + if (ndp_ether_aton(eaddr, ea) == 0) + sdl_m.sdl_alen = 6; + flags = expire_time = 0; + while (argc-- > 0) { + if (strncmp(argv[0], "temp", 4) == 0) { + struct timeval time; + gettimeofday(&time, 0); + expire_time = time.tv_sec + 20 * 60; + } + argv++; + } +tryagain: + if (rtmsg(RTM_GET) < 0) { + perror(host); + return (1); + } + sin = (struct sockaddr_in6 *)(rtm + 1); + sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); + if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { + if (sdl->sdl_family == AF_LINK && + (rtm->rtm_flags & RTF_LLINFO) && + !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { + case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: + case IFT_ISO88024: case IFT_ISO88025: + goto overwrite; + } + goto tryagain; + } +overwrite: + if (sdl->sdl_family != AF_LINK) { + printf("cannot intuit interface index and type for %s\n", host); + return (1); + } + sdl_m.sdl_type = sdl->sdl_type; + sdl_m.sdl_index = sdl->sdl_index; + return (rtmsg(RTM_ADD)); +} + +/* + * Display an individual neighbor cache entry + */ +void +get(host) + char *host; +{ + struct sockaddr_in6 *sin = &sin_m; + struct addrinfo hints, *res; + int gai_error; + + sin_m = blank_sin; + bzero(&hints, sizeof(hints)); + hints.ai_family = AF_INET6; + gai_error = getaddrinfo(host, NULL, &hints, &res); + if (gai_error) { + fprintf(stderr, "ndp: %s: %s\n", host, + gai_strerror(gai_error)); + return; + } + sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; + dump(&sin->sin6_addr); + if (found_entry == 0) { + getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, + sizeof(host_buf), NULL ,0, + NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); + printf("%s (%s) -- no entry\n", host, host_buf); + exit(1); + } +} + +/* + * Delete a neighbor cache entry + */ +int +delete(host) + char *host; +{ + struct sockaddr_in6 *sin = &sin_m; + register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; + struct sockaddr_dl *sdl; + struct addrinfo hints, *res; + int gai_error; + + getsocket(); + sin_m = blank_sin; + + bzero(&hints, sizeof(hints)); + hints.ai_family = AF_INET6; + gai_error = getaddrinfo(host, NULL, &hints, &res); + if (gai_error) { + fprintf(stderr, "ndp: %s: %s\n", host, + gai_strerror(gai_error)); + return 1; + } + sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; +/*tryagain:*/ + if (rtmsg(RTM_GET) < 0) { + perror(host); + return (1); + } + sin = (struct sockaddr_in6 *)(rtm + 1); + sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); + if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { + if (sdl->sdl_family == AF_LINK && + (rtm->rtm_flags & RTF_LLINFO) && + !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { + case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: + case IFT_ISO88024: case IFT_ISO88025: + goto delete; + } + } +delete: + if (sdl->sdl_family != AF_LINK) { + printf("cannot locate %s\n", host); + return (1); + } + if (rtmsg(RTM_DELETE) == 0) { + getnameinfo((struct sockaddr *)sin, + sin->sin6_len, host_buf, + sizeof(host_buf), NULL, 0, + NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); + printf("%s (%s) deleted\n", host, host_buf); + } + + return 0; +} + +/* + * Dump the entire neighbor cache + */ +void +dump(addr) + struct in6_addr *addr; +{ + int mib[6]; + size_t needed; + char *lim, *buf, *next; + struct rt_msghdr *rtm; + struct sockaddr_in6 *sin; + struct sockaddr_dl *sdl; + extern int h_errno; + struct in6_nbrinfo *nbi; + struct timeval time; + int addrwidth; + char flgbuf[8]; + + /* Print header */ + if (!tflag) + printf("%-31.31s %-17.17s %6.6s %-9.9s %2s %4s %4s\n", + "Neighbor", "Linklayer Address", "Netif", "Expire", + "St", "Flgs", "Prbs"); + +again:; + mib[0] = CTL_NET; + mib[1] = PF_ROUTE; + mib[2] = 0; + mib[3] = AF_INET6; + mib[4] = NET_RT_FLAGS; + mib[5] = RTF_LLINFO; + if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) + err(1, "sysctl(PF_ROUTE estimate)"); + if (needed > 0) { + if ((buf = malloc(needed)) == NULL) + errx(1, "malloc"); + if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) + err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); + lim = buf + needed; + } else + buf = lim = NULL; + + for (next = buf; next && next < lim; next += rtm->rtm_msglen) { + int isrouter = 0, prbs = 0; + + rtm = (struct rt_msghdr *)next; + sin = (struct sockaddr_in6 *)(rtm + 1); + sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); + if (addr) { + if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) + continue; + found_entry = 1; + } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) + continue; + if (fflag == 1) { + delete((char *)inet_ntop(AF_INET6, &sin->sin6_addr, + ntop_buf, sizeof(ntop_buf))); + continue; + } + + if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || + IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { + /* XXX: should scope id be filled in the kernel? */ + if (sin->sin6_scope_id == 0) + sin->sin6_scope_id = sdl->sdl_index; + + /* XXX: KAME specific hack; removed the embedded id */ + *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; + } + getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, + sizeof(host_buf), NULL, 0, + NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); + gettimeofday(&time, 0); + if (tflag) + ts_print(&time); + + if (lflag) { + addrwidth = strlen(host_buf); + if (addrwidth < 31) + addrwidth = 31; + } else + addrwidth = 31; + + printf("%-*.*s %-17.17s %6.6s", addrwidth, addrwidth, host_buf, + ether_str(sdl), + if_indextoname(sdl->sdl_index, ifix_buf)); + + /* Print neighbor discovery specific informations */ + nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); + if (nbi) { + if (nbi->expire > time.tv_sec) { + printf(" %-9.9s", + sec2str(nbi->expire - time.tv_sec)); + } + else if (nbi->expire == 0) + printf(" %-9.9s", "permanent"); + else + printf(" %-9.9s", "expired"); + + switch(nbi->state) { + case ND6_LLINFO_NOSTATE: + printf(" N"); + break; + case ND6_LLINFO_WAITDELETE: + printf(" W"); + break; + case ND6_LLINFO_INCOMPLETE: + printf(" I"); + break; + case ND6_LLINFO_REACHABLE: + printf(" R"); + break; + case ND6_LLINFO_STALE: + printf(" S"); + break; + case ND6_LLINFO_DELAY: + printf(" D"); + break; + case ND6_LLINFO_PROBE: + printf(" P"); + break; + default: + printf(" ?"); + break; + } + + isrouter = nbi->isrouter; + prbs = nbi->asked; + } + else { + warnx("failed to get neighbor information"); + printf(" "); + } + putchar(' '); + + /* + * other flags. R: router, P: proxy, W: ?? + */ + if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { + snprintf(flgbuf, sizeof(flgbuf), "%s", + isrouter ? "R" : ""); + } else { + sin = (struct sockaddr_in6 *) + (sdl->sdl_len + (char *)sdl); + snprintf(flgbuf, sizeof(flgbuf), "%s%s%s", + isrouter ? "R" : "", + !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) + ? "P" : "", + (sin->sin6_len != sizeof(struct sockaddr_in6)) + ? "W" : ""); + } + printf(" %-4.4s", flgbuf); + + if (prbs) + printf(" %4d", prbs); + + printf("\n"); + } + + if (repeat) { + printf("\n"); + sleep(repeat); + goto again; + } +} + +static struct in6_nbrinfo * +getnbrinfo(addr, ifindex, warning) + struct in6_addr *addr; + int ifindex; + int warning; +{ + static struct in6_nbrinfo nbi; + int s; + + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) + err(1, "socket"); + + bzero(&nbi, sizeof(nbi)); + if_indextoname(ifindex, nbi.ifname); + nbi.addr = *addr; + if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { + if (warning) + warn("ioctl"); + close(s); + return(NULL); + } + + close(s); + return(&nbi); +} + +static char * +ether_str(sdl) + struct sockaddr_dl *sdl; +{ + static char ebuf[32]; + u_char *cp; + + if (sdl->sdl_alen) { + cp = (u_char *)LLADDR(sdl); + sprintf(ebuf, "%x:%x:%x:%x:%x:%x", + cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); + } + else { + sprintf(ebuf, "(incomplete)"); + } + + return(ebuf); +} + +int +ndp_ether_aton(a, n) + char *a; + u_char *n; +{ + int i, o[6]; + + i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], + &o[3], &o[4], &o[5]); + if (i != 6) { + fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); + return (1); + } + for (i=0; i<6; i++) + n[i] = o[i]; + return (0); +} + +void +usage() +{ + printf("usage: ndp hostname\n"); + printf(" ndp -a[ntl]\n"); + printf(" ndp [-ntl] -A wait\n"); + printf(" ndp -c[nt]\n"); + printf(" ndp -d[nt] hostname\n"); + printf(" ndp -f[nt] filename\n"); + printf(" ndp -i interface\n"); +#ifdef SIOCSDEFIFACE_IN6 + printf(" ndp -I interface\n"); +#endif + printf(" ndp -p\n"); + printf(" ndp -r\n"); + printf(" ndp -s hostname ether_addr [temp]\n"); + printf(" ndp -H\n"); + printf(" ndp -P\n"); + printf(" ndp -R\n"); + exit(1); +} + +int +rtmsg(cmd) + int cmd; +{ + static int seq; + int rlen; + register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; + register char *cp = m_rtmsg.m_space; + register int l; + + errno = 0; + if (cmd == RTM_DELETE) + goto doit; + bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); + rtm->rtm_flags = flags; + rtm->rtm_version = RTM_VERSION; + + switch (cmd) { + default: + fprintf(stderr, "ndp: internal wrong cmd\n"); + exit(1); + case RTM_ADD: + rtm->rtm_addrs |= RTA_GATEWAY; + rtm->rtm_rmx.rmx_expire = expire_time; + rtm->rtm_inits = RTV_EXPIRE; + rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); + /* FALLTHROUGH */ + case RTM_GET: + rtm->rtm_addrs |= RTA_DST; + } +#define NEXTADDR(w, s) \ + if (rtm->rtm_addrs & (w)) { \ + bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} + + NEXTADDR(RTA_DST, sin_m); + NEXTADDR(RTA_GATEWAY, sdl_m); + NEXTADDR(RTA_NETMASK, so_mask); + + rtm->rtm_msglen = cp - (char *)&m_rtmsg; +doit: + l = rtm->rtm_msglen; + rtm->rtm_seq = ++seq; + rtm->rtm_type = cmd; + if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { + if (errno != ESRCH || cmd != RTM_DELETE) { + perror("writing to routing socket"); + return (-1); + } + } + do { + l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); + } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); + if (l < 0) + (void) fprintf(stderr, "ndp: read from routing socket: %s\n", + strerror(errno)); + return (0); +} + +void +ifinfo(ifname) + char *ifname; +{ + struct in6_ndireq nd; + int s; + + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { + perror("ndp: socket"); + exit(1); + } + bzero(&nd, sizeof(nd)); + strcpy(nd.ifname, ifname); + if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { + perror("ioctl (SIOCGIFINFO_IN6)"); + exit(1); + } +#define ND nd.ndi + printf("linkmtu=%d", ND.linkmtu); + printf(", curhlim=%d", ND.chlim); + printf(", basereachable=%ds%dms", + ND.basereachable / 1000, ND.basereachable % 1000); + printf(", reachable=%ds", ND.reachable); + printf(", retrans=%ds%dms\n", ND.retrans / 1000, ND.retrans % 1000); +#undef ND + close(s); +} + +void +rtrlist() +{ + struct in6_drlist dr; + int s, i; + struct timeval time; + + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { + perror("ndp: socket"); + exit(1); + } + bzero(&dr, sizeof(dr)); + strcpy(dr.ifname, "lo0"); /* dummy */ + if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { + perror("ioctl (SIOCGDRLST_IN6)"); + exit(1); + } +#define DR dr.defrouter[i] + for (i = 0 ; DR.if_index && i < PRLSTSIZ ; i++) { + struct sockaddr_in6 sin6; + + bzero(&sin6, sizeof(sin6)); + sin6.sin6_family = AF_INET6; + sin6.sin6_len = sizeof(sin6); + sin6.sin6_addr = DR.rtaddr; + getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, + sizeof(host_buf), NULL, 0, + NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); + + printf("%s if=%s", host_buf, + if_indextoname(DR.if_index, ifix_buf)); + printf(", flags=%s%s", + DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", + DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); + gettimeofday(&time, 0); + if (DR.expire == 0) + printf(", expire=Never\n"); + else + printf(", expire=%s\n", + sec2str(DR.expire - time.tv_sec)); + } +#undef DR + close(s); +} + +void +plist() +{ + struct in6_prlist pr; + int s, i; + struct timeval time; + + gettimeofday(&time, 0); + + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { + perror("ndp: socket"); + exit(1); + } + bzero(&pr, sizeof(pr)); + strcpy(pr.ifname, "lo0"); /* dummy */ + if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { + perror("ioctl (SIOCGPRLST_IN6)"); + exit(1); + } +#define PR pr.prefix[i] + for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { + printf("%s/%d if=%s\n", + inet_ntop(AF_INET6, &PR.prefix, ntop_buf, + sizeof(ntop_buf)), PR.prefixlen, + if_indextoname(PR.if_index, ifix_buf)); + gettimeofday(&time, 0); + printf(" flags=%s%s", + PR.raflags.onlink ? "L" : "", + PR.raflags.autonomous ? "A" : ""); + if (PR.vltime == ND6_INFINITE_LIFETIME) + printf(" vltime=infinity"); + else + printf(" vltime=%ld", (long)PR.vltime); + if (PR.pltime == ND6_INFINITE_LIFETIME) + printf(", pltime=infinity"); + else + printf(", pltime=%ld", (long)PR.pltime); + if (PR.expire == 0) + printf(", expire=Never\n"); + else if (PR.expire >= time.tv_sec) + printf(", expire=%s\n", + sec2str(PR.expire - time.tv_sec)); + else + printf(", expired\n"); + if (PR.advrtrs) { + int j; + printf(" advertised by\n"); + for (j = 0; j < PR.advrtrs; j++) { + struct sockaddr_in6 sin6; + struct in6_nbrinfo *nbi; + + bzero(&sin6, sizeof(sin6)); + sin6.sin6_family = AF_INET6; + sin6.sin6_len = sizeof(sin6); + sin6.sin6_addr = PR.advrtr[j]; + sin6.sin6_scope_id = PR.if_index; /* XXX */ + getnameinfo((struct sockaddr *)&sin6, + sin6.sin6_len, host_buf, + sizeof(host_buf), NULL, 0, + NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); + printf(" %s", host_buf); + + nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index, + 0); + if (nbi) { + switch(nbi->state) { + case ND6_LLINFO_REACHABLE: + case ND6_LLINFO_STALE: + case ND6_LLINFO_DELAY: + case ND6_LLINFO_PROBE: + printf(" (reachable)\n"); + break; + default: + printf(" (unreachable)\n"); + } + } + else + printf(" (no neighbor state)\n"); + } + if (PR.advrtrs > DRLSTSIZ) + printf(" and %d routers\n", + PR.advrtrs - DRLSTSIZ); + } + else + printf(" No advertising router\n"); + } +#undef PR + close(s); +} + +void +pfx_flush() +{ + char dummyif[IFNAMSIZ+8]; + int s; + + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) + err(1, "socket"); + strcpy(dummyif, "lo0"); /* dummy */ + if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) + err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); +} + +void +rtr_flush() +{ + char dummyif[IFNAMSIZ+8]; + int s; + + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) + err(1, "socket"); + strcpy(dummyif, "lo0"); /* dummy */ + if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) + err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); + + close(s); +} + +void +harmonize_rtr() +{ + char dummyif[IFNAMSIZ+8]; + int s; + + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) + err(1, "ndp: socket"); + strcpy(dummyif, "lo0"); /* dummy */ + if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) + err(1, "ioctl (SIOCSNDFLUSH_IN6)"); + + close(s); +} + +#ifdef SIOCSDEFIFACE_IN6 +static void +setdefif(ifname) + char *ifname; +{ + int s; + + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) + err(1, "ndp: socket"); + + if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)ifname) < 0) + err(1, "ioctl (SIOCSDEFIFACE_IN6)"); + + close(s); +} +#endif + +static char * +sec2str(total) + time_t total; +{ + static char result[256]; + int days, hours, mins, secs; + int first = 1; + char *p = result; + + days = total / 3600 / 24; + hours = (total / 3600) % 24; + mins = (total / 60) % 60; + secs = total % 60; + + if (days) { + first = 0; + p += sprintf(p, "%dd", days); + } + if (!first || hours) { + first = 0; + p += sprintf(p, "%dh", hours); + } + if (!first || mins) { + first = 0; + p += sprintf(p, "%dm", mins); + } + sprintf(p, "%ds", secs); + + return(result); +} + +/* + * Print the timestamp + * from tcpdump/util.c + */ +static void +ts_print(tvp) + const struct timeval *tvp; +{ + int s; + + /* Default */ + s = (tvp->tv_sec + thiszone) % 86400; + (void)printf("%02d:%02d:%02d.%06u ", + s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); +} |