Index: stable/12/sbin/ping6/Makefile =================================================================== --- stable/12/sbin/ping6/Makefile (revision 351940) +++ stable/12/sbin/ping6/Makefile (revision 351941) @@ -1,15 +1,15 @@ # $FreeBSD$ PACKAGE=runtime PROG= ping6 MAN= ping6.8 -CFLAGS+=-DIPSEC -DKAME_SCOPEID -DUSE_RFC2292BIS +CFLAGS+=-DIPSEC -DKAME_SCOPEID WARNS?= 3 BINOWN= root BINMODE=4555 LIBADD= ipsec m md .include Index: stable/12/sbin/ping6/ping6.c =================================================================== --- stable/12/sbin/ping6/ping6.c (revision 351940) +++ stable/12/sbin/ping6/ping6.c (revision 351941) @@ -1,2779 +1,2730 @@ /* $KAME: ping6.c,v 1.169 2003/07/25 06:01:47 itojun Exp $ */ /*- * SPDX-License-Identifier: BSD-3-Clause * * 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. */ /* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */ /* * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Mike Muuss. * * 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 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. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1989, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93"; #endif #endif /* not lint */ #include __FBSDID("$FreeBSD$"); /* * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility, * measure round-trip-delays and packet loss across network paths. * * Author - * Mike Muuss * U. S. Army Ballistic Research Laboratory * December, 1983 * * Status - * Public Domain. Distribution Unlimited. * Bugs - * More statistics could always be gathered. * This program has to run SUID to ROOT to access the ICMP socket. */ /* * NOTE: * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link* * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of * network attached to 1 or more interfaces) */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IPSEC #include #include #endif #include struct tv32 { u_int32_t tv32_sec; u_int32_t tv32_usec; }; #define MAXPACKETLEN 131072 #define IP6LEN 40 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */ #define ICMP6ECHOTMLEN sizeof(struct tv32) #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8) # define CONTROLLEN 10240 /* ancillary data buffer size RFC3542 20.1 */ /* FQDN case, 64 bits of nonce + 32 bits ttl */ #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12) #define EXTRA 256 /* for AH and various other headers. weird. */ #define DEFDATALEN ICMP6ECHOTMLEN #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN #define NROUTES 9 /* number of record route slots */ #define MAXWAIT 10000 /* max ms to wait for response */ #define MAXALARM (60 * 60) /* max seconds for alarm timeout */ #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */ #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */ #define SET(bit) (A(bit) |= B(bit)) #define CLR(bit) (A(bit) &= (~B(bit))) #define TST(bit) (A(bit) & B(bit)) #define F_FLOOD 0x0001 #define F_INTERVAL 0x0002 #define F_PINGFILLED 0x0008 #define F_QUIET 0x0010 #define F_RROUTE 0x0020 #define F_SO_DEBUG 0x0040 #define F_VERBOSE 0x0100 #ifdef IPSEC #ifdef IPSEC_POLICY_IPSEC #define F_POLICY 0x0400 #else #define F_AUTHHDR 0x0200 #define F_ENCRYPT 0x0400 #endif /*IPSEC_POLICY_IPSEC*/ #endif /*IPSEC*/ #define F_NODEADDR 0x0800 #define F_FQDN 0x1000 #define F_INTERFACE 0x2000 #define F_SRCADDR 0x4000 #define F_HOSTNAME 0x10000 #define F_FQDNOLD 0x20000 #define F_NIGROUP 0x40000 #define F_SUPTYPES 0x80000 #define F_NOMINMTU 0x100000 #define F_ONCE 0x200000 #define F_AUDIBLE 0x400000 #define F_MISSED 0x800000 #define F_DONTFRAG 0x1000000 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES) #define F_WAITTIME 0x2000000 u_int options; #define IN6LEN sizeof(struct in6_addr) #define SA6LEN sizeof(struct sockaddr_in6) #define DUMMY_PORT 10101 #define SIN6(s) ((struct sockaddr_in6 *)(s)) /* * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum * number of received sequence numbers we can keep track of. Change 128 * to 8192 for complete accuracy... */ #define MAX_DUP_CHK (8 * 8192) static int mx_dup_ck = MAX_DUP_CHK; static char rcvd_tbl[MAX_DUP_CHK / 8]; static struct sockaddr_in6 dst; /* who to ping6 */ static struct sockaddr_in6 src; /* src addr of this packet */ static socklen_t srclen; static size_t datalen = DEFDATALEN; static int s; /* socket file descriptor */ static u_char outpack[MAXPACKETLEN]; static char BSPACE = '\b'; /* characters written for flood */ static char BBELL = '\a'; /* characters written for AUDIBLE */ static char DOT = '.'; static char *hostname; static int ident; /* process id to identify our packets */ static u_int8_t nonce[8]; /* nonce field for node information */ static int hoplimit = -1; /* hoplimit */ static u_char *packet = NULL; /* counters */ static long nmissedmax; /* max value of ntransmitted - nreceived - 1 */ static long npackets; /* max packets to transmit */ static long nreceived; /* # of packets we got back */ static long nrepeats; /* number of duplicates */ static long ntransmitted; /* sequence # for outbound packets = #sent */ static int interval = 1000; /* interval between packets in ms */ static int waittime = MAXWAIT; /* timeout for each packet */ static long nrcvtimeout = 0; /* # of packets we got back after waittime */ /* timing */ static int timing; /* flag to do timing */ static double tmin = 999999999.0; /* minimum round trip time */ static double tmax = 0.0; /* maximum round trip time */ static double tsum = 0.0; /* sum of all times, for doing average */ static double tsumsq = 0.0; /* sum of all times squared, for std. dev. */ /* for node addresses */ static u_short naflags; /* for ancillary data(advanced API) */ static struct msghdr smsghdr; static struct iovec smsgiov; static char *scmsg = 0; static volatile sig_atomic_t seenint; #ifdef SIGINFO static volatile sig_atomic_t seeninfo; #endif int main(int, char *[]); static void fill(char *, char *); static int get_hoplim(struct msghdr *); static int get_pathmtu(struct msghdr *); static struct in6_pktinfo *get_rcvpktinfo(struct msghdr *); static void onsignal(int); static void onint(int); static size_t pingerlen(void); static int pinger(void); static const char *pr_addr(struct sockaddr *, int); static void pr_icmph(struct icmp6_hdr *, u_char *); static void pr_iph(struct ip6_hdr *); static void pr_suptypes(struct icmp6_nodeinfo *, size_t); static void pr_nodeaddr(struct icmp6_nodeinfo *, int); static int myechoreply(const struct icmp6_hdr *); static int mynireply(const struct icmp6_nodeinfo *); static char *dnsdecode(const u_char **, const u_char *, const u_char *, char *, size_t); static void pr_pack(u_char *, int, struct msghdr *); static void pr_exthdrs(struct msghdr *); static void pr_ip6opt(void *, size_t); static void pr_rthdr(void *, size_t); static int pr_bitrange(u_int32_t, int, int); static void pr_retip(struct ip6_hdr *, u_char *); static void summary(void); static void tvsub(struct timeval *, struct timeval *); static int setpolicy(int, char *); static char *nigroup(char *, int); static void usage(void); int main(int argc, char *argv[]) { struct timeval last, intvl; struct sockaddr_in6 from, *sin6; struct addrinfo hints, *res; struct sigaction si_sa; int cc, i; int almost_done, ch, hold, packlen, preload, optval, error; int nig_oldmcprefix = -1; u_char *datap; char *e, *target, *ifname = NULL, *gateway = NULL; int ip6optlen = 0; struct cmsghdr *scmsgp = NULL; /* For control (ancillary) data received from recvmsg() */ struct cmsghdr cm[CONTROLLEN]; #if defined(SO_SNDBUF) && defined(SO_RCVBUF) u_long lsockbufsize; int sockbufsize = 0; #endif int usepktinfo = 0; struct in6_pktinfo *pktinfo = NULL; -#ifdef USE_RFC2292BIS struct ip6_rthdr *rthdr = NULL; -#endif #ifdef IPSEC_POLICY_IPSEC char *policy_in = NULL; char *policy_out = NULL; #endif double t; u_long alarmtimeout; size_t rthlen; #ifdef IPV6_USE_MIN_MTU int mflag = 0; #endif /* just to be sure */ memset(&smsghdr, 0, sizeof(smsghdr)); memset(&smsgiov, 0, sizeof(smsgiov)); alarmtimeout = preload = 0; datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN]; #ifndef IPSEC #define ADDOPTS #else #ifdef IPSEC_POLICY_IPSEC #define ADDOPTS "P:" #else #define ADDOPTS "AE" #endif /*IPSEC_POLICY_IPSEC*/ #endif while ((ch = getopt(argc, argv, "a:b:c:DdfHg:h:I:i:l:mnNop:qrRS:s:tvwWx:X:" ADDOPTS)) != -1) { #undef ADDOPTS switch (ch) { case 'a': { char *cp; options &= ~F_NOUSERDATA; options |= F_NODEADDR; for (cp = optarg; *cp != '\0'; cp++) { switch (*cp) { case 'a': naflags |= NI_NODEADDR_FLAG_ALL; break; case 'c': case 'C': naflags |= NI_NODEADDR_FLAG_COMPAT; break; case 'l': case 'L': naflags |= NI_NODEADDR_FLAG_LINKLOCAL; break; case 's': case 'S': naflags |= NI_NODEADDR_FLAG_SITELOCAL; break; case 'g': case 'G': naflags |= NI_NODEADDR_FLAG_GLOBAL; break; case 'A': /* experimental. not in the spec */ #ifdef NI_NODEADDR_FLAG_ANYCAST naflags |= NI_NODEADDR_FLAG_ANYCAST; break; #else errx(1, "-a A is not supported on the platform"); /*NOTREACHED*/ #endif default: usage(); /*NOTREACHED*/ } } break; } case 'b': #if defined(SO_SNDBUF) && defined(SO_RCVBUF) errno = 0; e = NULL; lsockbufsize = strtoul(optarg, &e, 10); sockbufsize = (int)lsockbufsize; if (errno || !*optarg || *e || lsockbufsize > INT_MAX) errx(1, "invalid socket buffer size"); #else errx(1, "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported"); #endif break; case 'c': npackets = strtol(optarg, &e, 10); if (npackets <= 0 || *optarg == '\0' || *e != '\0') errx(1, "illegal number of packets -- %s", optarg); break; case 'D': options |= F_DONTFRAG; break; case 'd': options |= F_SO_DEBUG; break; case 'f': if (getuid()) { errno = EPERM; errx(1, "Must be superuser to flood ping"); } options |= F_FLOOD; setbuf(stdout, (char *)NULL); break; case 'g': gateway = optarg; break; case 'H': options |= F_HOSTNAME; break; case 'h': /* hoplimit */ hoplimit = strtol(optarg, &e, 10); if (*optarg == '\0' || *e != '\0') errx(1, "illegal hoplimit %s", optarg); if (255 < hoplimit || hoplimit < -1) errx(1, "illegal hoplimit -- %s", optarg); break; case 'I': ifname = optarg; options |= F_INTERFACE; #ifndef USE_SIN6_SCOPE_ID usepktinfo++; #endif break; case 'i': /* wait between sending packets */ t = strtod(optarg, &e); if (*optarg == '\0' || *e != '\0') errx(1, "illegal timing interval %s", optarg); if (t < 1 && getuid()) { errx(1, "%s: only root may use interval < 1s", strerror(EPERM)); } intvl.tv_sec = (long)t; intvl.tv_usec = (long)((t - intvl.tv_sec) * 1000000); if (intvl.tv_sec < 0) errx(1, "illegal timing interval %s", optarg); /* less than 1/hz does not make sense */ if (intvl.tv_sec == 0 && intvl.tv_usec < 1) { warnx("too small interval, raised to .000001"); intvl.tv_usec = 1; } options |= F_INTERVAL; break; case 'l': if (getuid()) { errno = EPERM; errx(1, "Must be superuser to preload"); } preload = strtol(optarg, &e, 10); if (preload < 0 || *optarg == '\0' || *e != '\0') errx(1, "illegal preload value -- %s", optarg); break; case 'm': #ifdef IPV6_USE_MIN_MTU mflag++; break; #else errx(1, "-%c is not supported on this platform", ch); /*NOTREACHED*/ #endif case 'n': options &= ~F_HOSTNAME; break; case 'N': options |= F_NIGROUP; nig_oldmcprefix++; break; case 'o': options |= F_ONCE; break; case 'p': /* fill buffer with user pattern */ options |= F_PINGFILLED; fill((char *)datap, optarg); break; case 'q': options |= F_QUIET; break; case 'r': options |= F_AUDIBLE; break; case 'R': options |= F_MISSED; break; case 'S': memset(&hints, 0, sizeof(struct addrinfo)); hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */ hints.ai_family = AF_INET6; hints.ai_socktype = SOCK_RAW; hints.ai_protocol = IPPROTO_ICMPV6; error = getaddrinfo(optarg, NULL, &hints, &res); if (error) { errx(1, "invalid source address: %s", gai_strerror(error)); } /* * res->ai_family must be AF_INET6 and res->ai_addrlen * must be sizeof(src). */ memcpy(&src, res->ai_addr, res->ai_addrlen); srclen = res->ai_addrlen; freeaddrinfo(res); options |= F_SRCADDR; break; case 's': /* size of packet to send */ datalen = strtol(optarg, &e, 10); if (datalen <= 0 || *optarg == '\0' || *e != '\0') errx(1, "illegal datalen value -- %s", optarg); if (datalen > MAXDATALEN) { errx(1, "datalen value too large, maximum is %d", MAXDATALEN); } break; case 't': options &= ~F_NOUSERDATA; options |= F_SUPTYPES; break; case 'v': options |= F_VERBOSE; break; case 'w': options &= ~F_NOUSERDATA; options |= F_FQDN; break; case 'W': options &= ~F_NOUSERDATA; options |= F_FQDNOLD; break; case 'x': t = strtod(optarg, &e); if (*e || e == optarg || t > (double)INT_MAX) err(EX_USAGE, "invalid timing interval: `%s'", optarg); options |= F_WAITTIME; waittime = (int)t; break; case 'X': alarmtimeout = strtoul(optarg, &e, 0); if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX)) errx(EX_USAGE, "invalid timeout: `%s'", optarg); if (alarmtimeout > MAXALARM) errx(EX_USAGE, "invalid timeout: `%s' > %d", optarg, MAXALARM); alarm((int)alarmtimeout); break; #ifdef IPSEC #ifdef IPSEC_POLICY_IPSEC case 'P': options |= F_POLICY; if (!strncmp("in", optarg, 2)) { if ((policy_in = strdup(optarg)) == NULL) errx(1, "strdup"); } else if (!strncmp("out", optarg, 3)) { if ((policy_out = strdup(optarg)) == NULL) errx(1, "strdup"); } else errx(1, "invalid security policy"); break; #else case 'A': options |= F_AUTHHDR; break; case 'E': options |= F_ENCRYPT; break; #endif /*IPSEC_POLICY_IPSEC*/ #endif /*IPSEC*/ default: usage(); /*NOTREACHED*/ } } argc -= optind; argv += optind; if (argc < 1) { usage(); /*NOTREACHED*/ } if (argc > 1) { #ifdef IPV6_RECVRTHDR /* 2292bis */ rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1)); #else /* RFC2292 */ rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1); #endif if (rthlen == 0) { errx(1, "too many intermediate hops"); /*NOTREACHED*/ } ip6optlen += rthlen; } if (options & F_NIGROUP) { target = nigroup(argv[argc - 1], nig_oldmcprefix); if (target == NULL) { usage(); /*NOTREACHED*/ } } else target = argv[argc - 1]; /* getaddrinfo */ memset(&hints, 0, sizeof(struct addrinfo)); hints.ai_flags = AI_CANONNAME; hints.ai_family = AF_INET6; hints.ai_socktype = SOCK_RAW; hints.ai_protocol = IPPROTO_ICMPV6; error = getaddrinfo(target, NULL, &hints, &res); if (error) errx(1, "%s", gai_strerror(error)); if (res->ai_canonname) hostname = strdup(res->ai_canonname); else hostname = target; if (!res->ai_addr) errx(1, "getaddrinfo failed"); (void)memcpy(&dst, res->ai_addr, res->ai_addrlen); if ((s = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) < 0) err(1, "socket"); freeaddrinfo(res); /* set the source address if specified. */ if ((options & F_SRCADDR) != 0) { /* properly fill sin6_scope_id */ if (IN6_IS_ADDR_LINKLOCAL(&src.sin6_addr) && ( IN6_IS_ADDR_LINKLOCAL(&dst.sin6_addr) || IN6_IS_ADDR_MC_LINKLOCAL(&dst.sin6_addr) || IN6_IS_ADDR_MC_NODELOCAL(&dst.sin6_addr))) { if (src.sin6_scope_id == 0) src.sin6_scope_id = dst.sin6_scope_id; if (dst.sin6_scope_id == 0) dst.sin6_scope_id = src.sin6_scope_id; } if (bind(s, (struct sockaddr *)&src, srclen) != 0) err(1, "bind"); } /* set the gateway (next hop) if specified */ if (gateway) { memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_INET6; hints.ai_socktype = SOCK_RAW; hints.ai_protocol = IPPROTO_ICMPV6; error = getaddrinfo(gateway, NULL, &hints, &res); if (error) { errx(1, "getaddrinfo for the gateway %s: %s", gateway, gai_strerror(error)); } if (res->ai_next && (options & F_VERBOSE)) warnx("gateway resolves to multiple addresses"); if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP, res->ai_addr, res->ai_addrlen)) { err(1, "setsockopt(IPV6_NEXTHOP)"); } freeaddrinfo(res); } /* * let the kerel pass extension headers of incoming packets, * for privileged socket options */ if ((options & F_VERBOSE) != 0) { int opton = 1; #ifdef IPV6_RECVHOPOPTS if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton, sizeof(opton))) err(1, "setsockopt(IPV6_RECVHOPOPTS)"); #else /* old adv. API */ if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton, sizeof(opton))) err(1, "setsockopt(IPV6_HOPOPTS)"); #endif #ifdef IPV6_RECVDSTOPTS if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton, sizeof(opton))) err(1, "setsockopt(IPV6_RECVDSTOPTS)"); #else /* old adv. API */ if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton, sizeof(opton))) err(1, "setsockopt(IPV6_DSTOPTS)"); #endif #ifdef IPV6_RECVRTHDRDSTOPTS if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton, sizeof(opton))) err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)"); #endif } /* revoke root privilege */ if (seteuid(getuid()) != 0) err(1, "seteuid() failed"); if (setuid(getuid()) != 0) err(1, "setuid() failed"); if ((options & F_FLOOD) && (options & F_INTERVAL)) errx(1, "-f and -i incompatible options"); if ((options & F_NOUSERDATA) == 0) { if (datalen >= sizeof(struct tv32)) { /* we can time transfer */ timing = 1; } else timing = 0; /* in F_VERBOSE case, we may get non-echoreply packets*/ if (options & F_VERBOSE) packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA; else packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA; } else { /* suppress timing for node information query */ timing = 0; datalen = 2048; packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA; } if (!(packet = (u_char *)malloc((u_int)packlen))) err(1, "Unable to allocate packet"); if (!(options & F_PINGFILLED)) for (i = ICMP6ECHOLEN; i < packlen; ++i) *datap++ = i; ident = getpid() & 0xFFFF; arc4random_buf(nonce, sizeof(nonce)); optval = 1; if (options & F_DONTFRAG) if (setsockopt(s, IPPROTO_IPV6, IPV6_DONTFRAG, &optval, sizeof(optval)) == -1) err(1, "IPV6_DONTFRAG"); hold = 1; if (options & F_SO_DEBUG) (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold, sizeof(hold)); optval = IPV6_DEFHLIM; if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &optval, sizeof(optval)) == -1) err(1, "IPV6_MULTICAST_HOPS"); #ifdef IPV6_USE_MIN_MTU if (mflag != 1) { optval = mflag > 1 ? 0 : 1; if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU, &optval, sizeof(optval)) == -1) err(1, "setsockopt(IPV6_USE_MIN_MTU)"); } #ifdef IPV6_RECVPATHMTU else { optval = 1; if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU, &optval, sizeof(optval)) == -1) err(1, "setsockopt(IPV6_RECVPATHMTU)"); } #endif /* IPV6_RECVPATHMTU */ #endif /* IPV6_USE_MIN_MTU */ #ifdef IPSEC #ifdef IPSEC_POLICY_IPSEC if (options & F_POLICY) { if (setpolicy(s, policy_in) < 0) errx(1, "%s", ipsec_strerror()); if (setpolicy(s, policy_out) < 0) errx(1, "%s", ipsec_strerror()); } #else if (options & F_AUTHHDR) { optval = IPSEC_LEVEL_REQUIRE; #ifdef IPV6_AUTH_TRANS_LEVEL if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL, &optval, sizeof(optval)) == -1) err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)"); #else /* old def */ if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL, &optval, sizeof(optval)) == -1) err(1, "setsockopt(IPV6_AUTH_LEVEL)"); #endif } if (options & F_ENCRYPT) { optval = IPSEC_LEVEL_REQUIRE; if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL, &optval, sizeof(optval)) == -1) err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)"); } #endif /*IPSEC_POLICY_IPSEC*/ #endif #ifdef ICMP6_FILTER { struct icmp6_filter filt; if (!(options & F_VERBOSE)) { ICMP6_FILTER_SETBLOCKALL(&filt); if ((options & F_FQDN) || (options & F_FQDNOLD) || (options & F_NODEADDR) || (options & F_SUPTYPES)) ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt); else ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt); } else { ICMP6_FILTER_SETPASSALL(&filt); } if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt, sizeof(filt)) < 0) err(1, "setsockopt(ICMP6_FILTER)"); } #endif /*ICMP6_FILTER*/ /* let the kerel pass extension headers of incoming packets */ if ((options & F_VERBOSE) != 0) { int opton = 1; #ifdef IPV6_RECVRTHDR if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton, sizeof(opton))) err(1, "setsockopt(IPV6_RECVRTHDR)"); #else /* old adv. API */ if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton, sizeof(opton))) err(1, "setsockopt(IPV6_RTHDR)"); #endif } /* optval = 1; if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &optval, sizeof(optval)) == -1) err(1, "IPV6_MULTICAST_LOOP"); */ /* Specify the outgoing interface and/or the source address */ if (usepktinfo) ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo)); if (hoplimit != -1) ip6optlen += CMSG_SPACE(sizeof(int)); /* set IP6 packet options */ if (ip6optlen) { if ((scmsg = (char *)malloc(ip6optlen)) == NULL) errx(1, "can't allocate enough memory"); smsghdr.msg_control = (caddr_t)scmsg; smsghdr.msg_controllen = ip6optlen; scmsgp = (struct cmsghdr *)scmsg; } if (usepktinfo) { pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp)); memset(pktinfo, 0, sizeof(*pktinfo)); scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); scmsgp->cmsg_level = IPPROTO_IPV6; scmsgp->cmsg_type = IPV6_PKTINFO; scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); } /* set the outgoing interface */ if (ifname) { #ifndef USE_SIN6_SCOPE_ID /* pktinfo must have already been allocated */ if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0) errx(1, "%s: invalid interface name", ifname); #else if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0) errx(1, "%s: invalid interface name", ifname); #endif } if (hoplimit != -1) { scmsgp->cmsg_len = CMSG_LEN(sizeof(int)); scmsgp->cmsg_level = IPPROTO_IPV6; scmsgp->cmsg_type = IPV6_HOPLIMIT; *(int *)(CMSG_DATA(scmsgp)) = hoplimit; scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); } if (argc > 1) { /* some intermediate addrs are specified */ int hops; -#ifdef USE_RFC2292BIS int rthdrlen; -#endif -#ifdef USE_RFC2292BIS rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1); scmsgp->cmsg_len = CMSG_LEN(rthdrlen); scmsgp->cmsg_level = IPPROTO_IPV6; scmsgp->cmsg_type = IPV6_RTHDR; rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp); rthdr = inet6_rth_init((void *)rthdr, rthdrlen, IPV6_RTHDR_TYPE_0, argc - 1); if (rthdr == NULL) errx(1, "can't initialize rthdr"); -#else /* old advanced API */ - if ((scmsgp = (struct cmsghdr *)inet6_rthdr_init(scmsgp, - IPV6_RTHDR_TYPE_0)) == NULL) - errx(1, "can't initialize rthdr"); -#endif /* USE_RFC2292BIS */ for (hops = 0; hops < argc - 1; hops++) { memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_INET6; if ((error = getaddrinfo(argv[hops], NULL, &hints, &res))) errx(1, "%s", gai_strerror(error)); if (res->ai_addr->sa_family != AF_INET6) errx(1, "bad addr family of an intermediate addr"); sin6 = (struct sockaddr_in6 *)(void *)res->ai_addr; -#ifdef USE_RFC2292BIS if (inet6_rth_add(rthdr, &sin6->sin6_addr)) errx(1, "can't add an intermediate node"); -#else /* old advanced API */ - if (inet6_rthdr_add(scmsg, &sin6->sin6_addr, - IPV6_RTHDR_LOOSE)) - errx(1, "can't add an intermediate node"); -#endif /* USE_RFC2292BIS */ freeaddrinfo(res); } -#ifndef USE_RFC2292BIS - if (inet6_rthdr_lasthop(scmsgp, IPV6_RTHDR_LOOSE)) - errx(1, "can't set the last flag"); -#endif - scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); } if (!(options & F_SRCADDR)) { /* * get the source address. XXX since we revoked the root * privilege, we cannot use a raw socket for this. */ int dummy; socklen_t len = sizeof(src); if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) err(1, "UDP socket"); src.sin6_family = AF_INET6; src.sin6_addr = dst.sin6_addr; src.sin6_port = ntohs(DUMMY_PORT); src.sin6_scope_id = dst.sin6_scope_id; -#ifdef USE_RFC2292BIS if (pktinfo && setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO, (void *)pktinfo, sizeof(*pktinfo))) err(1, "UDP setsockopt(IPV6_PKTINFO)"); if (hoplimit != -1 && setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS, (void *)&hoplimit, sizeof(hoplimit))) err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)"); if (hoplimit != -1 && setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (void *)&hoplimit, sizeof(hoplimit))) err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)"); if (rthdr && setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR, (void *)rthdr, (rthdr->ip6r_len + 1) << 3)) err(1, "UDP setsockopt(IPV6_RTHDR)"); -#else /* old advanced API */ - if (smsghdr.msg_control && - setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS, - (void *)smsghdr.msg_control, smsghdr.msg_controllen)) - err(1, "UDP setsockopt(IPV6_PKTOPTIONS)"); -#endif if (connect(dummy, (struct sockaddr *)&src, len) < 0) err(1, "UDP connect"); if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0) err(1, "getsockname"); close(dummy); } #if defined(SO_SNDBUF) && defined(SO_RCVBUF) if (sockbufsize) { if (datalen > (size_t)sockbufsize) warnx("you need -b to increase socket buffer size"); if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize, sizeof(sockbufsize)) < 0) err(1, "setsockopt(SO_SNDBUF)"); if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize, sizeof(sockbufsize)) < 0) err(1, "setsockopt(SO_RCVBUF)"); } else { if (datalen > 8 * 1024) /*XXX*/ warnx("you need -b to increase socket buffer size"); /* * When pinging the broadcast address, you can get a lot of * answers. Doing something so evil is useful if you are trying * to stress the ethernet, or just want to fill the arp cache * to get some stuff for /etc/ethers. */ hold = 48 * 1024; setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold, sizeof(hold)); } #endif optval = 1; #ifndef USE_SIN6_SCOPE_ID #ifdef IPV6_RECVPKTINFO if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval, sizeof(optval)) < 0) warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */ #else /* old adv. API */ if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval, sizeof(optval)) < 0) warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */ #endif #endif /* USE_SIN6_SCOPE_ID */ #ifdef IPV6_RECVHOPLIMIT if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval, sizeof(optval)) < 0) warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */ #else /* old adv. API */ if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval, sizeof(optval)) < 0) warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */ #endif printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()), (unsigned long)(pingerlen() - 8)); printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src))); printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst))); if (preload == 0) pinger(); else { if (npackets != 0 && preload > npackets) preload = npackets; while (preload--) pinger(); } gettimeofday(&last, NULL); sigemptyset(&si_sa.sa_mask); si_sa.sa_flags = 0; si_sa.sa_handler = onsignal; if (sigaction(SIGINT, &si_sa, 0) == -1) err(EX_OSERR, "sigaction SIGINT"); seenint = 0; #ifdef SIGINFO if (sigaction(SIGINFO, &si_sa, 0) == -1) err(EX_OSERR, "sigaction SIGINFO"); seeninfo = 0; #endif if (alarmtimeout > 0) { if (sigaction(SIGALRM, &si_sa, 0) == -1) err(EX_OSERR, "sigaction SIGALRM"); } if (options & F_FLOOD) { intvl.tv_sec = 0; intvl.tv_usec = 10000; } else if ((options & F_INTERVAL) == 0) { intvl.tv_sec = interval / 1000; intvl.tv_usec = interval % 1000 * 1000; } almost_done = 0; while (seenint == 0) { struct timeval now, timeout; struct msghdr m; struct iovec iov[2]; fd_set rfds; int n; /* signal handling */ if (seenint) onint(SIGINT); #ifdef SIGINFO if (seeninfo) { summary(); seeninfo = 0; continue; } #endif FD_ZERO(&rfds); FD_SET(s, &rfds); gettimeofday(&now, NULL); timeout.tv_sec = last.tv_sec + intvl.tv_sec - now.tv_sec; timeout.tv_usec = last.tv_usec + intvl.tv_usec - now.tv_usec; while (timeout.tv_usec < 0) { timeout.tv_usec += 1000000; timeout.tv_sec--; } while (timeout.tv_usec > 1000000) { timeout.tv_usec -= 1000000; timeout.tv_sec++; } if (timeout.tv_sec < 0) timeout.tv_sec = timeout.tv_usec = 0; n = select(s + 1, &rfds, NULL, NULL, &timeout); if (n < 0) continue; /* EINTR */ if (n == 1) { m.msg_name = (caddr_t)&from; m.msg_namelen = sizeof(from); memset(&iov, 0, sizeof(iov)); iov[0].iov_base = (caddr_t)packet; iov[0].iov_len = packlen; m.msg_iov = iov; m.msg_iovlen = 1; memset(cm, 0, CONTROLLEN); m.msg_control = (void *)cm; m.msg_controllen = CONTROLLEN; cc = recvmsg(s, &m, 0); if (cc < 0) { if (errno != EINTR) { warn("recvmsg"); sleep(1); } continue; } else if (cc == 0) { int mtu; /* * receive control messages only. Process the * exceptions (currently the only possibility is * a path MTU notification.) */ if ((mtu = get_pathmtu(&m)) > 0) { if ((options & F_VERBOSE) != 0) { printf("new path MTU (%d) is " "notified\n", mtu); } } continue; } else { /* * an ICMPv6 message (probably an echoreply) * arrived. */ pr_pack(packet, cc, &m); } if (((options & F_ONCE) != 0 && nreceived > 0) || (npackets > 0 && nreceived >= npackets)) break; } if (n == 0 || (options & F_FLOOD)) { if (npackets == 0 || ntransmitted < npackets) pinger(); else { if (almost_done) break; almost_done = 1; /* * If we're not transmitting any more packets, * change the timer to wait two round-trip times * if we've received any packets or (waittime) * milliseconds if we haven't. */ intvl.tv_usec = 0; if (nreceived) { intvl.tv_sec = 2 * tmax / 1000; if (intvl.tv_sec == 0) intvl.tv_sec = 1; } else { intvl.tv_sec = waittime / 1000; intvl.tv_usec = waittime % 1000 * 1000; } } gettimeofday(&last, NULL); if (ntransmitted - nreceived - 1 > nmissedmax) { nmissedmax = ntransmitted - nreceived - 1; if (options & F_MISSED) (void)write(STDOUT_FILENO, &BBELL, 1); } } } sigemptyset(&si_sa.sa_mask); si_sa.sa_flags = 0; si_sa.sa_handler = SIG_IGN; sigaction(SIGINT, &si_sa, 0); sigaction(SIGALRM, &si_sa, 0); summary(); if(packet != NULL) free(packet); exit(nreceived == 0 ? 2 : 0); } static void onsignal(int sig) { switch (sig) { case SIGINT: case SIGALRM: seenint++; break; #ifdef SIGINFO case SIGINFO: seeninfo++; break; #endif } } /* * pinger -- * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet * will be added on by the kernel. The ID field is our UNIX process ID, * and the sequence number is an ascending integer. The first 8 bytes * of the data portion are used to hold a UNIX "timeval" struct in VAX * byte-order, to compute the round-trip time. */ static size_t pingerlen(void) { size_t l; if (options & F_FQDN) l = ICMP6_NIQLEN + sizeof(dst.sin6_addr); else if (options & F_FQDNOLD) l = ICMP6_NIQLEN; else if (options & F_NODEADDR) l = ICMP6_NIQLEN + sizeof(dst.sin6_addr); else if (options & F_SUPTYPES) l = ICMP6_NIQLEN; else l = ICMP6ECHOLEN + datalen; return l; } static int pinger(void) { struct icmp6_hdr *icp; struct iovec iov[2]; int i, cc; struct icmp6_nodeinfo *nip; int seq; if (npackets && ntransmitted >= npackets) return(-1); /* no more transmission */ icp = (struct icmp6_hdr *)outpack; nip = (struct icmp6_nodeinfo *)outpack; memset(icp, 0, sizeof(*icp)); icp->icmp6_cksum = 0; seq = ntransmitted++; CLR(seq % mx_dup_ck); if (options & F_FQDN) { icp->icmp6_type = ICMP6_NI_QUERY; icp->icmp6_code = ICMP6_NI_SUBJ_IPV6; nip->ni_qtype = htons(NI_QTYPE_FQDN); nip->ni_flags = htons(0); memcpy(nip->icmp6_ni_nonce, nonce, sizeof(nip->icmp6_ni_nonce)); *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr, sizeof(dst.sin6_addr)); cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr); datalen = 0; } else if (options & F_FQDNOLD) { /* packet format in 03 draft - no Subject data on queries */ icp->icmp6_type = ICMP6_NI_QUERY; icp->icmp6_code = 0; /* code field is always 0 */ nip->ni_qtype = htons(NI_QTYPE_FQDN); nip->ni_flags = htons(0); memcpy(nip->icmp6_ni_nonce, nonce, sizeof(nip->icmp6_ni_nonce)); *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); cc = ICMP6_NIQLEN; datalen = 0; } else if (options & F_NODEADDR) { icp->icmp6_type = ICMP6_NI_QUERY; icp->icmp6_code = ICMP6_NI_SUBJ_IPV6; nip->ni_qtype = htons(NI_QTYPE_NODEADDR); nip->ni_flags = naflags; memcpy(nip->icmp6_ni_nonce, nonce, sizeof(nip->icmp6_ni_nonce)); *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr, sizeof(dst.sin6_addr)); cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr); datalen = 0; } else if (options & F_SUPTYPES) { icp->icmp6_type = ICMP6_NI_QUERY; icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/ nip->ni_qtype = htons(NI_QTYPE_SUPTYPES); /* we support compressed bitmap */ nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS; memcpy(nip->icmp6_ni_nonce, nonce, sizeof(nip->icmp6_ni_nonce)); *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); cc = ICMP6_NIQLEN; datalen = 0; } else { icp->icmp6_type = ICMP6_ECHO_REQUEST; icp->icmp6_code = 0; icp->icmp6_id = htons(ident); icp->icmp6_seq = ntohs(seq); if (timing) { struct timeval tv; struct tv32 *tv32; (void)gettimeofday(&tv, NULL); tv32 = (struct tv32 *)&outpack[ICMP6ECHOLEN]; tv32->tv32_sec = htonl(tv.tv_sec); tv32->tv32_usec = htonl(tv.tv_usec); } cc = ICMP6ECHOLEN + datalen; } #ifdef DIAGNOSTIC if (pingerlen() != cc) errx(1, "internal error; length mismatch"); #endif smsghdr.msg_name = (caddr_t)&dst; smsghdr.msg_namelen = sizeof(dst); memset(&iov, 0, sizeof(iov)); iov[0].iov_base = (caddr_t)outpack; iov[0].iov_len = cc; smsghdr.msg_iov = iov; smsghdr.msg_iovlen = 1; i = sendmsg(s, &smsghdr, 0); if (i < 0 || i != cc) { if (i < 0) warn("sendmsg"); (void)printf("ping6: wrote %s %d chars, ret=%d\n", hostname, cc, i); } if (!(options & F_QUIET) && options & F_FLOOD) (void)write(STDOUT_FILENO, &DOT, 1); return(0); } static int myechoreply(const struct icmp6_hdr *icp) { if (ntohs(icp->icmp6_id) == ident) return 1; else return 0; } static int mynireply(const struct icmp6_nodeinfo *nip) { if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t), nonce + sizeof(u_int16_t), sizeof(nonce) - sizeof(u_int16_t)) == 0) return 1; else return 0; } static char * dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf, size_t bufsiz) /*base for compressed name*/ { int i; const u_char *cp; char cresult[MAXDNAME + 1]; const u_char *comp; int l; cp = *sp; *buf = '\0'; if (cp >= ep) return NULL; while (cp < ep) { i = *cp; if (i == 0 || cp != *sp) { if (strlcat((char *)buf, ".", bufsiz) >= bufsiz) return NULL; /*result overrun*/ } if (i == 0) break; cp++; if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) { /* DNS compression */ if (!base) return NULL; comp = base + (i & 0x3f); if (dnsdecode(&comp, cp, base, cresult, sizeof(cresult)) == NULL) return NULL; if (strlcat(buf, cresult, bufsiz) >= bufsiz) return NULL; /*result overrun*/ break; } else if ((i & 0x3f) == i) { if (i > ep - cp) return NULL; /*source overrun*/ while (i-- > 0 && cp < ep) { l = snprintf(cresult, sizeof(cresult), isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff); if ((size_t)l >= sizeof(cresult) || l < 0) return NULL; if (strlcat(buf, cresult, bufsiz) >= bufsiz) return NULL; /*result overrun*/ cp++; } } else return NULL; /*invalid label*/ } if (i != 0) return NULL; /*not terminated*/ cp++; *sp = cp; return buf; } /* * pr_pack -- * Print out the packet, if it came from us. This logic is necessary * because ALL readers of the ICMP socket get a copy of ALL ICMP packets * which arrive ('tis only fair). This permits multiple copies of this * program to be run without having intermingled output (or statistics!). */ static void pr_pack(u_char *buf, int cc, struct msghdr *mhdr) { #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c) struct icmp6_hdr *icp; struct icmp6_nodeinfo *ni; int i; int hoplim; struct sockaddr *from; int fromlen; u_char *cp = NULL, *dp, *end = buf + cc; struct in6_pktinfo *pktinfo = NULL; struct timeval tv, tp; struct tv32 *tpp; double triptime = 0; int dupflag; size_t off; int oldfqdn; u_int16_t seq; char dnsname[MAXDNAME + 1]; (void)gettimeofday(&tv, NULL); if (!mhdr || !mhdr->msg_name || mhdr->msg_namelen != sizeof(struct sockaddr_in6) || ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) { if (options & F_VERBOSE) warnx("invalid peername"); return; } from = (struct sockaddr *)mhdr->msg_name; fromlen = mhdr->msg_namelen; if (cc < (int)sizeof(struct icmp6_hdr)) { if (options & F_VERBOSE) warnx("packet too short (%d bytes) from %s", cc, pr_addr(from, fromlen)); return; } if (((mhdr->msg_flags & MSG_CTRUNC) != 0) && (options & F_VERBOSE) != 0) warnx("some control data discarded, insufficient buffer size"); icp = (struct icmp6_hdr *)buf; ni = (struct icmp6_nodeinfo *)buf; off = 0; if ((hoplim = get_hoplim(mhdr)) == -1) { warnx("failed to get receiving hop limit"); return; } if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) { warnx("failed to get receiving packet information"); return; } if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) { seq = ntohs(icp->icmp6_seq); ++nreceived; if (timing) { tpp = (struct tv32 *)(icp + 1); tp.tv_sec = ntohl(tpp->tv32_sec); tp.tv_usec = ntohl(tpp->tv32_usec); tvsub(&tv, &tp); triptime = ((double)tv.tv_sec) * 1000.0 + ((double)tv.tv_usec) / 1000.0; tsum += triptime; tsumsq += triptime * triptime; if (triptime < tmin) tmin = triptime; if (triptime > tmax) tmax = triptime; } if (TST(seq % mx_dup_ck)) { ++nrepeats; --nreceived; dupflag = 1; } else { SET(seq % mx_dup_ck); dupflag = 0; } if (options & F_QUIET) return; if (options & F_WAITTIME && triptime > waittime) { ++nrcvtimeout; return; } if (options & F_FLOOD) (void)write(STDOUT_FILENO, &BSPACE, 1); else { if (options & F_AUDIBLE) (void)write(STDOUT_FILENO, &BBELL, 1); (void)printf("%d bytes from %s, icmp_seq=%u", cc, pr_addr(from, fromlen), seq); (void)printf(" hlim=%d", hoplim); if ((options & F_VERBOSE) != 0) { struct sockaddr_in6 dstsa; memset(&dstsa, 0, sizeof(dstsa)); dstsa.sin6_family = AF_INET6; dstsa.sin6_len = sizeof(dstsa); dstsa.sin6_scope_id = pktinfo->ipi6_ifindex; dstsa.sin6_addr = pktinfo->ipi6_addr; (void)printf(" dst=%s", pr_addr((struct sockaddr *)&dstsa, sizeof(dstsa))); } if (timing) (void)printf(" time=%.3f ms", triptime); if (dupflag) (void)printf("(DUP!)"); /* check the data */ cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN; dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN; for (i = 8; cp < end; ++i, ++cp, ++dp) { if (*cp != *dp) { (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp); break; } } } } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) { seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce); ++nreceived; if (TST(seq % mx_dup_ck)) { ++nrepeats; --nreceived; dupflag = 1; } else { SET(seq % mx_dup_ck); dupflag = 0; } if (options & F_QUIET) return; (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen)); switch (ntohs(ni->ni_code)) { case ICMP6_NI_SUCCESS: break; case ICMP6_NI_REFUSED: printf("refused, type 0x%x", ntohs(ni->ni_type)); goto fqdnend; case ICMP6_NI_UNKNOWN: printf("unknown, type 0x%x", ntohs(ni->ni_type)); goto fqdnend; default: printf("unknown code 0x%x, type 0x%x", ntohs(ni->ni_code), ntohs(ni->ni_type)); goto fqdnend; } switch (ntohs(ni->ni_qtype)) { case NI_QTYPE_NOOP: printf("NodeInfo NOOP"); break; case NI_QTYPE_SUPTYPES: pr_suptypes(ni, end - (u_char *)ni); break; case NI_QTYPE_NODEADDR: pr_nodeaddr(ni, end - (u_char *)ni); break; case NI_QTYPE_FQDN: default: /* XXX: for backward compatibility */ cp = (u_char *)ni + ICMP6_NIRLEN; if (buf[off + ICMP6_NIRLEN] == cc - off - ICMP6_NIRLEN - 1) oldfqdn = 1; else oldfqdn = 0; if (oldfqdn) { cp++; /* skip length */ while (cp < end) { safeputc(*cp & 0xff); cp++; } } else { i = 0; while (cp < end) { if (dnsdecode((const u_char **)&cp, end, (const u_char *)(ni + 1), dnsname, sizeof(dnsname)) == NULL) { printf("???"); break; } /* * name-lookup special handling for * truncated name */ if (cp + 1 <= end && !*cp && strlen(dnsname) > 0) { dnsname[strlen(dnsname) - 1] = '\0'; cp++; } printf("%s%s", i > 0 ? "," : "", dnsname); } } if (options & F_VERBOSE) { int32_t ttl; int comma = 0; (void)printf(" ("); /*)*/ switch (ni->ni_code) { case ICMP6_NI_REFUSED: (void)printf("refused"); comma++; break; case ICMP6_NI_UNKNOWN: (void)printf("unknown qtype"); comma++; break; } if ((end - (u_char *)ni) < ICMP6_NIRLEN) { /* case of refusion, unknown */ /*(*/ putchar(')'); goto fqdnend; } ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]); if (comma) printf(","); if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) { (void)printf("TTL=%d:meaningless", (int)ttl); } else { if (ttl < 0) { (void)printf("TTL=%d:invalid", ttl); } else (void)printf("TTL=%d", ttl); } comma++; if (oldfqdn) { if (comma) printf(","); printf("03 draft"); comma++; } else { cp = (u_char *)ni + ICMP6_NIRLEN; if (cp == end) { if (comma) printf(","); printf("no name"); comma++; } } if (buf[off + ICMP6_NIRLEN] != cc - off - ICMP6_NIRLEN - 1 && oldfqdn) { if (comma) printf(","); (void)printf("invalid namelen:%d/%lu", buf[off + ICMP6_NIRLEN], (u_long)cc - off - ICMP6_NIRLEN - 1); comma++; } /*(*/ putchar(')'); } fqdnend: ; } } else { /* We've got something other than an ECHOREPLY */ if (!(options & F_VERBOSE)) return; (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen)); pr_icmph(icp, end); } if (!(options & F_FLOOD)) { (void)putchar('\n'); if (options & F_VERBOSE) pr_exthdrs(mhdr); (void)fflush(stdout); } #undef safeputc } static void pr_exthdrs(struct msghdr *mhdr) { ssize_t bufsize; void *bufp; struct cmsghdr *cm; bufsize = 0; bufp = mhdr->msg_control; for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { if (cm->cmsg_level != IPPROTO_IPV6) continue; bufsize = CONTROLLEN - ((caddr_t)CMSG_DATA(cm) - (caddr_t)bufp); if (bufsize <= 0) continue; switch (cm->cmsg_type) { case IPV6_HOPOPTS: printf(" HbH Options: "); pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize); break; case IPV6_DSTOPTS: #ifdef IPV6_RTHDRDSTOPTS case IPV6_RTHDRDSTOPTS: #endif printf(" Dst Options: "); pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize); break; case IPV6_RTHDR: printf(" Routing: "); pr_rthdr(CMSG_DATA(cm), (size_t)bufsize); break; } } } -#ifdef USE_RFC2292BIS static void pr_ip6opt(void *extbuf, size_t bufsize) { struct ip6_hbh *ext; int currentlen; u_int8_t type; socklen_t extlen, len; void *databuf; size_t offset; u_int16_t value2; u_int32_t value4; ext = (struct ip6_hbh *)extbuf; extlen = (ext->ip6h_len + 1) * 8; printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt, (unsigned int)ext->ip6h_len, (unsigned long)extlen); /* * Bounds checking on the ancillary data buffer: * subtract the size of a cmsg structure from the buffer size. */ if (bufsize < (extlen + CMSG_SPACE(0))) { extlen = bufsize - CMSG_SPACE(0); warnx("options truncated, showing only %u (total=%u)", (unsigned int)(extlen / 8 - 1), (unsigned int)(ext->ip6h_len)); } currentlen = 0; while (1) { currentlen = inet6_opt_next(extbuf, extlen, currentlen, &type, &len, &databuf); if (currentlen == -1) break; switch (type) { /* * Note that inet6_opt_next automatically skips any padding * optins. */ case IP6OPT_JUMBO: offset = 0; offset = inet6_opt_get_val(databuf, offset, &value4, sizeof(value4)); printf(" Jumbo Payload Opt: Length %u\n", (u_int32_t)ntohl(value4)); break; case IP6OPT_ROUTER_ALERT: offset = 0; offset = inet6_opt_get_val(databuf, offset, &value2, sizeof(value2)); printf(" Router Alert Opt: Type %u\n", ntohs(value2)); break; default: printf(" Received Opt %u len %lu\n", type, (unsigned long)len); break; } } return; } -#else /* !USE_RFC2292BIS */ -/* ARGSUSED */ -static void -pr_ip6opt(void *extbuf, size_t bufsize __unused) -{ - putchar('\n'); - return; -} -#endif /* USE_RFC2292BIS */ -#ifdef USE_RFC2292BIS static void pr_rthdr(void *extbuf, size_t bufsize) { struct in6_addr *in6; char ntopbuf[INET6_ADDRSTRLEN]; struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf; int i, segments, origsegs, rthsize, size0, size1; /* print fixed part of the header */ printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt, rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type); if ((segments = inet6_rth_segments(extbuf)) >= 0) { printf("%d segments, ", segments); printf("%d left\n", rh->ip6r_segleft); } else { printf("segments unknown, "); printf("%d left\n", rh->ip6r_segleft); return; } /* * Bounds checking on the ancillary data buffer. When calculating * the number of items to show keep in mind: * - The size of the cmsg structure * - The size of one segment (the size of a Type 0 routing header) * - When dividing add a fudge factor of one in case the * dividend is not evenly divisible by the divisor */ rthsize = (rh->ip6r_len + 1) * 8; if (bufsize < (rthsize + CMSG_SPACE(0))) { origsegs = segments; size0 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 0); size1 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 1); segments -= (rthsize - (bufsize - CMSG_SPACE(0))) / (size1 - size0) + 1; warnx("segments truncated, showing only %d (total=%d)", segments, origsegs); } for (i = 0; i < segments; i++) { in6 = inet6_rth_getaddr(extbuf, i); if (in6 == NULL) printf(" [%d]\n", i); else { if (!inet_ntop(AF_INET6, in6, ntopbuf, sizeof(ntopbuf))) strlcpy(ntopbuf, "?", sizeof(ntopbuf)); printf(" [%d]%s\n", i, ntopbuf); } } return; } - -#else /* !USE_RFC2292BIS */ -/* ARGSUSED */ -static void -pr_rthdr(void *extbuf, size_t bufsize __unused) -{ - putchar('\n'); - return; -} -#endif /* USE_RFC2292BIS */ static int pr_bitrange(u_int32_t v, int soff, int ii) { int off; int i; off = 0; while (off < 32) { /* shift till we have 0x01 */ if ((v & 0x01) == 0) { if (ii > 1) printf("-%u", soff + off - 1); ii = 0; switch (v & 0x0f) { case 0x00: v >>= 4; off += 4; continue; case 0x08: v >>= 3; off += 3; continue; case 0x04: case 0x0c: v >>= 2; off += 2; continue; default: v >>= 1; off += 1; continue; } } /* we have 0x01 with us */ for (i = 0; i < 32 - off; i++) { if ((v & (0x01 << i)) == 0) break; } if (!ii) printf(" %u", soff + off); ii += i; v >>= i; off += i; } return ii; } static void pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen) /* ni->qtype must be SUPTYPES */ { size_t clen; u_int32_t v; const u_char *cp, *end; u_int16_t cur; struct cbit { u_int16_t words; /*32bit count*/ u_int16_t skip; } cbit; #define MAXQTYPES (1 << 16) size_t off; int b; cp = (u_char *)(ni + 1); end = ((u_char *)ni) + nilen; cur = 0; b = 0; printf("NodeInfo Supported Qtypes"); if (options & F_VERBOSE) { if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) printf(", compressed bitmap"); else printf(", raw bitmap"); } while (cp < end) { clen = (size_t)(end - cp); if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) { if (clen == 0 || clen > MAXQTYPES / 8 || clen % sizeof(v)) { printf("???"); return; } } else { if (clen < sizeof(cbit) || clen % sizeof(v)) return; memcpy(&cbit, cp, sizeof(cbit)); if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) > clen) return; cp += sizeof(cbit); clen = ntohs(cbit.words) * sizeof(v); if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 > MAXQTYPES) return; } for (off = 0; off < clen; off += sizeof(v)) { memcpy(&v, cp + off, sizeof(v)); v = (u_int32_t)ntohl(v); b = pr_bitrange(v, (int)(cur + off * 8), b); } /* flush the remaining bits */ b = pr_bitrange(0, (int)(cur + off * 8), b); cp += clen; cur += clen * 8; if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0) cur += ntohs(cbit.skip) * 32; } } static void pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen) /* ni->qtype must be NODEADDR */ { u_char *cp = (u_char *)(ni + 1); char ntop_buf[INET6_ADDRSTRLEN]; int withttl = 0; nilen -= sizeof(struct icmp6_nodeinfo); if (options & F_VERBOSE) { switch (ni->ni_code) { case ICMP6_NI_REFUSED: (void)printf("refused"); break; case ICMP6_NI_UNKNOWN: (void)printf("unknown qtype"); break; } if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE) (void)printf(" truncated"); } putchar('\n'); if (nilen <= 0) printf(" no address\n"); /* * In icmp-name-lookups 05 and later, TTL of each returned address * is contained in the resposne. We try to detect the version * by the length of the data, but note that the detection algorithm * is incomplete. We assume the latest draft by default. */ if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0) withttl = 1; while (nilen > 0) { u_int32_t ttl; if (withttl) { /* XXX: alignment? */ ttl = (u_int32_t)ntohl(*(u_int32_t *)cp); cp += sizeof(u_int32_t); nilen -= sizeof(u_int32_t); } if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) == NULL) strlcpy(ntop_buf, "?", sizeof(ntop_buf)); printf(" %s", ntop_buf); if (withttl) { if (ttl == 0xffffffff) { /* * XXX: can this convention be applied to all * type of TTL (i.e. non-ND TTL)? */ printf("(TTL=infty)"); } else printf("(TTL=%u)", ttl); } putchar('\n'); nilen -= sizeof(struct in6_addr); cp += sizeof(struct in6_addr); } } static int get_hoplim(struct msghdr *mhdr) { struct cmsghdr *cm; for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { if (cm->cmsg_len == 0) return(-1); if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_HOPLIMIT && cm->cmsg_len == CMSG_LEN(sizeof(int))) return(*(int *)CMSG_DATA(cm)); } return(-1); } static struct in6_pktinfo * get_rcvpktinfo(struct msghdr *mhdr) { struct cmsghdr *cm; for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { if (cm->cmsg_len == 0) return(NULL); if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_PKTINFO && cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) return((struct in6_pktinfo *)CMSG_DATA(cm)); } return(NULL); } static int get_pathmtu(struct msghdr *mhdr) { #ifdef IPV6_RECVPATHMTU struct cmsghdr *cm; struct ip6_mtuinfo *mtuctl = NULL; for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { if (cm->cmsg_len == 0) return(0); if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_PATHMTU && cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) { mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm); /* * If the notified destination is different from * the one we are pinging, just ignore the info. * We check the scope ID only when both notified value * and our own value have non-0 values, because we may * have used the default scope zone ID for sending, * in which case the scope ID value is 0. */ if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr, &dst.sin6_addr) || (mtuctl->ip6m_addr.sin6_scope_id && dst.sin6_scope_id && mtuctl->ip6m_addr.sin6_scope_id != dst.sin6_scope_id)) { if ((options & F_VERBOSE) != 0) { printf("path MTU for %s is notified. " "(ignored)\n", pr_addr((struct sockaddr *)&mtuctl->ip6m_addr, sizeof(mtuctl->ip6m_addr))); } return(0); } /* * Ignore an invalid MTU. XXX: can we just believe * the kernel check? */ if (mtuctl->ip6m_mtu < IPV6_MMTU) return(0); /* notification for our destination. return the MTU. */ return((int)mtuctl->ip6m_mtu); } } #endif return(0); } /* * tvsub -- * Subtract 2 timeval structs: out = out - in. Out is assumed to * be >= in. */ static void tvsub(struct timeval *out, struct timeval *in) { if ((out->tv_usec -= in->tv_usec) < 0) { --out->tv_sec; out->tv_usec += 1000000; } out->tv_sec -= in->tv_sec; } /* * onint -- * SIGINT handler. */ /* ARGSUSED */ static void onint(int notused __unused) { /* * When doing reverse DNS lookups, the seenint flag might not * be noticed for a while. Just exit if we get a second SIGINT. */ if ((options & F_HOSTNAME) && seenint != 0) _exit(nreceived ? 0 : 2); } /* * summary -- * Print out statistics. */ static void summary(void) { (void)printf("\n--- %s ping6 statistics ---\n", hostname); (void)printf("%ld packets transmitted, ", ntransmitted); (void)printf("%ld packets received, ", nreceived); if (nrepeats) (void)printf("+%ld duplicates, ", nrepeats); if (ntransmitted) { if (nreceived > ntransmitted) (void)printf("-- somebody's duplicating packets!"); else (void)printf("%.1f%% packet loss", ((((double)ntransmitted - nreceived) * 100.0) / ntransmitted)); } if (nrcvtimeout) printf(", %ld packets out of wait time", nrcvtimeout); (void)putchar('\n'); if (nreceived && timing) { /* Only display average to microseconds */ double num = nreceived + nrepeats; double avg = tsum / num; double dev = sqrt(tsumsq / num - avg * avg); (void)printf( "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n", tmin, avg, tmax, dev); (void)fflush(stdout); } (void)fflush(stdout); } /*subject type*/ static const char *niqcode[] = { "IPv6 address", "DNS label", /*or empty*/ "IPv4 address", }; /*result code*/ static const char *nircode[] = { "Success", "Refused", "Unknown", }; /* * pr_icmph -- * Print a descriptive string about an ICMP header. */ static void pr_icmph(struct icmp6_hdr *icp, u_char *end) { char ntop_buf[INET6_ADDRSTRLEN]; struct nd_redirect *red; struct icmp6_nodeinfo *ni; char dnsname[MAXDNAME + 1]; const u_char *cp; size_t l; switch (icp->icmp6_type) { case ICMP6_DST_UNREACH: switch (icp->icmp6_code) { case ICMP6_DST_UNREACH_NOROUTE: (void)printf("No Route to Destination\n"); break; case ICMP6_DST_UNREACH_ADMIN: (void)printf("Destination Administratively " "Unreachable\n"); break; case ICMP6_DST_UNREACH_BEYONDSCOPE: (void)printf("Destination Unreachable Beyond Scope\n"); break; case ICMP6_DST_UNREACH_ADDR: (void)printf("Destination Host Unreachable\n"); break; case ICMP6_DST_UNREACH_NOPORT: (void)printf("Destination Port Unreachable\n"); break; default: (void)printf("Destination Unreachable, Bad Code: %d\n", icp->icmp6_code); break; } /* Print returned IP header information */ pr_retip((struct ip6_hdr *)(icp + 1), end); break; case ICMP6_PACKET_TOO_BIG: (void)printf("Packet too big mtu = %d\n", (int)ntohl(icp->icmp6_mtu)); pr_retip((struct ip6_hdr *)(icp + 1), end); break; case ICMP6_TIME_EXCEEDED: switch (icp->icmp6_code) { case ICMP6_TIME_EXCEED_TRANSIT: (void)printf("Time to live exceeded\n"); break; case ICMP6_TIME_EXCEED_REASSEMBLY: (void)printf("Frag reassembly time exceeded\n"); break; default: (void)printf("Time exceeded, Bad Code: %d\n", icp->icmp6_code); break; } pr_retip((struct ip6_hdr *)(icp + 1), end); break; case ICMP6_PARAM_PROB: (void)printf("Parameter problem: "); switch (icp->icmp6_code) { case ICMP6_PARAMPROB_HEADER: (void)printf("Erroneous Header "); break; case ICMP6_PARAMPROB_NEXTHEADER: (void)printf("Unknown Nextheader "); break; case ICMP6_PARAMPROB_OPTION: (void)printf("Unrecognized Option "); break; default: (void)printf("Bad code(%d) ", icp->icmp6_code); break; } (void)printf("pointer = 0x%02x\n", (u_int32_t)ntohl(icp->icmp6_pptr)); pr_retip((struct ip6_hdr *)(icp + 1), end); break; case ICMP6_ECHO_REQUEST: (void)printf("Echo Request"); /* XXX ID + Seq + Data */ break; case ICMP6_ECHO_REPLY: (void)printf("Echo Reply"); /* XXX ID + Seq + Data */ break; case ICMP6_MEMBERSHIP_QUERY: (void)printf("Listener Query"); break; case ICMP6_MEMBERSHIP_REPORT: (void)printf("Listener Report"); break; case ICMP6_MEMBERSHIP_REDUCTION: (void)printf("Listener Done"); break; case ND_ROUTER_SOLICIT: (void)printf("Router Solicitation"); break; case ND_ROUTER_ADVERT: (void)printf("Router Advertisement"); break; case ND_NEIGHBOR_SOLICIT: (void)printf("Neighbor Solicitation"); break; case ND_NEIGHBOR_ADVERT: (void)printf("Neighbor Advertisement"); break; case ND_REDIRECT: red = (struct nd_redirect *)icp; (void)printf("Redirect\n"); if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf, sizeof(ntop_buf))) strlcpy(ntop_buf, "?", sizeof(ntop_buf)); (void)printf("Destination: %s", ntop_buf); if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf, sizeof(ntop_buf))) strlcpy(ntop_buf, "?", sizeof(ntop_buf)); (void)printf(" New Target: %s", ntop_buf); break; case ICMP6_NI_QUERY: (void)printf("Node Information Query"); /* XXX ID + Seq + Data */ ni = (struct icmp6_nodeinfo *)icp; l = end - (u_char *)(ni + 1); printf(", "); switch (ntohs(ni->ni_qtype)) { case NI_QTYPE_NOOP: (void)printf("NOOP"); break; case NI_QTYPE_SUPTYPES: (void)printf("Supported qtypes"); break; case NI_QTYPE_FQDN: (void)printf("DNS name"); break; case NI_QTYPE_NODEADDR: (void)printf("nodeaddr"); break; case NI_QTYPE_IPV4ADDR: (void)printf("IPv4 nodeaddr"); break; default: (void)printf("unknown qtype"); break; } if (options & F_VERBOSE) { switch (ni->ni_code) { case ICMP6_NI_SUBJ_IPV6: if (l == sizeof(struct in6_addr) && inet_ntop(AF_INET6, ni + 1, ntop_buf, sizeof(ntop_buf)) != NULL) { (void)printf(", subject=%s(%s)", niqcode[ni->ni_code], ntop_buf); } else { #if 1 /* backward compat to -W */ (void)printf(", oldfqdn"); #else (void)printf(", invalid"); #endif } break; case ICMP6_NI_SUBJ_FQDN: if (end == (u_char *)(ni + 1)) { (void)printf(", no subject"); break; } printf(", subject=%s", niqcode[ni->ni_code]); cp = (const u_char *)(ni + 1); if (dnsdecode(&cp, end, NULL, dnsname, sizeof(dnsname)) != NULL) printf("(%s)", dnsname); else printf("(invalid)"); break; case ICMP6_NI_SUBJ_IPV4: if (l == sizeof(struct in_addr) && inet_ntop(AF_INET, ni + 1, ntop_buf, sizeof(ntop_buf)) != NULL) { (void)printf(", subject=%s(%s)", niqcode[ni->ni_code], ntop_buf); } else (void)printf(", invalid"); break; default: (void)printf(", invalid"); break; } } break; case ICMP6_NI_REPLY: (void)printf("Node Information Reply"); /* XXX ID + Seq + Data */ ni = (struct icmp6_nodeinfo *)icp; printf(", "); switch (ntohs(ni->ni_qtype)) { case NI_QTYPE_NOOP: (void)printf("NOOP"); break; case NI_QTYPE_SUPTYPES: (void)printf("Supported qtypes"); break; case NI_QTYPE_FQDN: (void)printf("DNS name"); break; case NI_QTYPE_NODEADDR: (void)printf("nodeaddr"); break; case NI_QTYPE_IPV4ADDR: (void)printf("IPv4 nodeaddr"); break; default: (void)printf("unknown qtype"); break; } if (options & F_VERBOSE) { if (ni->ni_code > nitems(nircode)) printf(", invalid"); else printf(", %s", nircode[ni->ni_code]); } break; default: (void)printf("Bad ICMP type: %d", icp->icmp6_type); } } /* * pr_iph -- * Print an IP6 header. */ static void pr_iph(struct ip6_hdr *ip6) { u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK; u_int8_t tc; char ntop_buf[INET6_ADDRSTRLEN]; tc = *(&ip6->ip6_vfc + 1); /* XXX */ tc = (tc >> 4) & 0x0f; tc |= (ip6->ip6_vfc << 4); printf("Vr TC Flow Plen Nxt Hlim\n"); printf(" %1x %02x %05x %04x %02x %02x\n", (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow), ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim); if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf))) strlcpy(ntop_buf, "?", sizeof(ntop_buf)); printf("%s->", ntop_buf); if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf))) strlcpy(ntop_buf, "?", sizeof(ntop_buf)); printf("%s\n", ntop_buf); } /* * pr_addr -- * Return an ascii host address as a dotted quad and optionally with * a hostname. */ static const char * pr_addr(struct sockaddr *addr, int addrlen) { static char buf[NI_MAXHOST]; int flag = 0; if ((options & F_HOSTNAME) == 0) flag |= NI_NUMERICHOST; if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0) return (buf); else return "?"; } /* * pr_retip -- * Dump some info on a returned (via ICMPv6) IPv6 packet. */ static void pr_retip(struct ip6_hdr *ip6, u_char *end) { u_char *cp = (u_char *)ip6, nh; int hlen; if ((size_t)(end - (u_char *)ip6) < sizeof(*ip6)) { printf("IP6"); goto trunc; } pr_iph(ip6); hlen = sizeof(*ip6); nh = ip6->ip6_nxt; cp += hlen; while (end - cp >= 8) { switch (nh) { case IPPROTO_HOPOPTS: printf("HBH "); hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3; nh = ((struct ip6_hbh *)cp)->ip6h_nxt; break; case IPPROTO_DSTOPTS: printf("DSTOPT "); hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3; nh = ((struct ip6_dest *)cp)->ip6d_nxt; break; case IPPROTO_FRAGMENT: printf("FRAG "); hlen = sizeof(struct ip6_frag); nh = ((struct ip6_frag *)cp)->ip6f_nxt; break; case IPPROTO_ROUTING: printf("RTHDR "); hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3; nh = ((struct ip6_rthdr *)cp)->ip6r_nxt; break; #ifdef IPSEC case IPPROTO_AH: printf("AH "); hlen = (((struct ah *)cp)->ah_len+2) << 2; nh = ((struct ah *)cp)->ah_nxt; break; #endif case IPPROTO_ICMPV6: printf("ICMP6: type = %d, code = %d\n", *cp, *(cp + 1)); return; case IPPROTO_ESP: printf("ESP\n"); return; case IPPROTO_TCP: printf("TCP: from port %u, to port %u (decimal)\n", (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); return; case IPPROTO_UDP: printf("UDP: from port %u, to port %u (decimal)\n", (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); return; default: printf("Unknown Header(%d)\n", nh); return; } if ((cp += hlen) >= end) goto trunc; } if (end - cp < 8) goto trunc; putchar('\n'); return; trunc: printf("...\n"); return; } static void fill(char *bp, char *patp) { int ii, jj, kk; int pat[16]; char *cp; for (cp = patp; *cp; cp++) if (!isxdigit(*cp)) errx(1, "patterns must be specified as hex digits"); ii = sscanf(patp, "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x", &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6], &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12], &pat[13], &pat[14], &pat[15]); /* xxx */ if (ii > 0) for (kk = 0; (size_t)kk <= MAXDATALEN - 8 + sizeof(struct tv32) + ii; kk += ii) for (jj = 0; jj < ii; ++jj) bp[jj + kk] = pat[jj]; if (!(options & F_QUIET)) { (void)printf("PATTERN: 0x"); for (jj = 0; jj < ii; ++jj) (void)printf("%02x", bp[jj] & 0xFF); (void)printf("\n"); } } #ifdef IPSEC #ifdef IPSEC_POLICY_IPSEC static int setpolicy(int so __unused, char *policy) { char *buf; if (policy == NULL) return 0; /* ignore */ buf = ipsec_set_policy(policy, strlen(policy)); if (buf == NULL) errx(1, "%s", ipsec_strerror()); if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf, ipsec_get_policylen(buf)) < 0) warnx("Unable to set IPsec policy"); free(buf); return 0; } #endif #endif static char * nigroup(char *name, int nig_oldmcprefix) { char *p; char *q; MD5_CTX ctxt; u_int8_t digest[16]; u_int8_t c; size_t l; char hbuf[NI_MAXHOST]; struct in6_addr in6; int valid; p = strchr(name, '.'); if (!p) p = name + strlen(name); l = p - name; if (l > 63 || l > sizeof(hbuf) - 1) return NULL; /*label too long*/ strncpy(hbuf, name, l); hbuf[(int)l] = '\0'; for (q = name; *q; q++) { if (isupper(*(unsigned char *)q)) *q = tolower(*(unsigned char *)q); } /* generate 16 bytes of pseudo-random value. */ memset(&ctxt, 0, sizeof(ctxt)); MD5Init(&ctxt); c = l & 0xff; MD5Update(&ctxt, &c, sizeof(c)); MD5Update(&ctxt, (unsigned char *)name, l); MD5Final(digest, &ctxt); if (nig_oldmcprefix) { /* draft-ietf-ipngwg-icmp-name-lookup */ valid = inet_pton(AF_INET6, "ff02::2:0000:0000", &in6); } else { /* RFC 4620 */ valid = inet_pton(AF_INET6, "ff02::2:ff00:0000", &in6); } if (valid != 1) return NULL; /*XXX*/ if (nig_oldmcprefix) { /* draft-ietf-ipngwg-icmp-name-lookup */ bcopy(digest, &in6.s6_addr[12], 4); } else { /* RFC 4620 */ bcopy(digest, &in6.s6_addr[13], 3); } if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL) return NULL; return strdup(hbuf); } static void usage(void) { (void)fprintf(stderr, #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC) "A" #endif "usage: ping6 [-" "Dd" #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC) "E" #endif "fH" #ifdef IPV6_USE_MIN_MTU "m" #endif "nNoqrRtvwW] " "[-a addrtype] [-b bufsiz] [-c count] [-g gateway]\n" " [-h hoplimit] [-I interface] [-i wait] [-l preload]" #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) " [-P policy]" #endif "\n" " [-p pattern] [-S sourceaddr] [-s packetsize] " "[-x waittime]\n" " [-X timeout] [hops ...] host\n"); exit(1); } Index: stable/12/usr.sbin/mld6query/Makefile =================================================================== --- stable/12/usr.sbin/mld6query/Makefile (revision 351940) +++ stable/12/usr.sbin/mld6query/Makefile (revision 351941) @@ -1,25 +1,25 @@ # Copyright (c) 1996 WIDE Project. All rights reserved. # # Redistribution and use in source and binary forms, with or without # modifications, are permitted provided that the above copyright notice # and this paragraph are duplicated in all such forms and that any # documentation, advertising materials, and other materials related to # such distribution and use acknowledge that the software was developed # by the WIDE Project, Japan. The name of the Project may not be used to # endorse or promote products derived from this software without # specific prior written permission. THIS SOFTWARE IS PROVIDED ``AS IS'' # AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT # LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE. # # $FreeBSD$ PROG= mld6query MAN= mld6query.8 SRCS= mld6.c -CFLAGS+= -DIPSEC -DUSE_RFC2292BIS +CFLAGS+= -DIPSEC WARNS?= 2 .include Index: stable/12/usr.sbin/mld6query/mld6.c =================================================================== --- stable/12/usr.sbin/mld6query/mld6.c (revision 351940) +++ stable/12/usr.sbin/mld6query/mld6.c (revision 351941) @@ -1,370 +1,350 @@ /* $KAME: mld6.c,v 1.15 2003/04/02 11:29:54 suz Exp $ */ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (C) 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. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* portability with older KAME headers */ #ifndef MLD_LISTENER_QUERY #define MLD_LISTENER_QUERY MLD6_LISTENER_QUERY #define MLD_LISTENER_REPORT MLD6_LISTENER_REPORT #define MLD_LISTENER_DONE MLD6_LISTENER_DONE #define MLD_MTRACE_RESP MLD6_MTRACE_RESP #define MLD_MTRACE MLD6_MTRACE #define mld_hdr mld6_hdr #define mld_type mld6_type #define mld_code mld6_code #define mld_cksum mld6_cksum #define mld_maxdelay mld6_maxdelay #define mld_reserved mld6_reserved #define mld_addr mld6_addr #endif #ifndef IP6OPT_ROUTER_ALERT #define IP6OPT_ROUTER_ALERT IP6OPT_RTALERT #endif struct msghdr m; struct sockaddr_in6 dst; struct mld_hdr mldh; struct in6_addr maddr = IN6ADDR_ANY_INIT, any = IN6ADDR_ANY_INIT; struct ipv6_mreq mreq; u_short ifindex; int s; #define QUERY_RESPONSE_INTERVAL 10000 void make_msg(int index, struct in6_addr *addr, u_int type, struct in6_addr *qaddr); void usage(void); void dump(int); void quit(int); int main(int argc, char *argv[]) { int i; struct icmp6_filter filt; u_int hlim = 1; fd_set fdset; struct itimerval itimer; u_int type; int ch; struct in6_addr *qaddr = &maddr; type = MLD_LISTENER_QUERY; while ((ch = getopt(argc, argv, "dgr")) != -1) { switch (ch) { case 'd': if (type != MLD_LISTENER_QUERY) { printf("Can not specifiy -d with -r\n"); return 1; } type = MLD_LISTENER_DONE; break; case 'g': qaddr = &any; break; case 'r': if (type != MLD_LISTENER_QUERY) { printf("Can not specifiy -r with -d\n"); return 1; } type = MLD_LISTENER_REPORT; break; default: usage(); /*NOTREACHED*/ } } argv += optind; argc -= optind; if (argc != 1 && argc != 2) usage(); ifindex = (u_short)if_nametoindex(argv[0]); if (ifindex == 0) usage(); if (argc == 2 && inet_pton(AF_INET6, argv[1], &maddr) != 1) usage(); if (type != MLD_LISTENER_QUERY && qaddr != &maddr) { printf("Can not specifiy -g with -d or -r\n"); return 1; } if ((s = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) < 0) err(1, "socket"); if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hlim, sizeof(hlim)) == -1) err(1, "setsockopt(IPV6_MULTICAST_HOPS)"); if (IN6_IS_ADDR_UNSPECIFIED(&maddr)) { if (inet_pton(AF_INET6, "ff02::1", &maddr) != 1) errx(1, "inet_pton failed"); } mreq.ipv6mr_multiaddr = maddr; mreq.ipv6mr_interface = ifindex; if (setsockopt(s, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1) err(1, "setsockopt(IPV6_JOIN_GROUP)"); ICMP6_FILTER_SETBLOCKALL(&filt); ICMP6_FILTER_SETPASS(ICMP6_MEMBERSHIP_QUERY, &filt); ICMP6_FILTER_SETPASS(ICMP6_MEMBERSHIP_REPORT, &filt); ICMP6_FILTER_SETPASS(ICMP6_MEMBERSHIP_REDUCTION, &filt); if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt, sizeof(filt)) < 0) err(1, "setsockopt(ICMP6_FILTER)"); make_msg(ifindex, &maddr, type, qaddr); if (sendmsg(s, &m, 0) < 0) err(1, "sendmsg"); itimer.it_value.tv_sec = QUERY_RESPONSE_INTERVAL / 1000; itimer.it_interval.tv_sec = 0; itimer.it_interval.tv_usec = 0; itimer.it_value.tv_usec = 0; (void)signal(SIGALRM, quit); (void)setitimer(ITIMER_REAL, &itimer, NULL); FD_ZERO(&fdset); if (s >= FD_SETSIZE) errx(1, "descriptor too big"); for (;;) { FD_SET(s, &fdset); if ((i = select(s + 1, &fdset, NULL, NULL, NULL)) < 0) perror("select"); if (i == 0) continue; else dump(s); } } void make_msg(int index, struct in6_addr *addr, u_int type, struct in6_addr *qaddr) { static struct iovec iov[2]; static u_char *cmsgbuf; int cmsglen, hbhlen = 0; -#ifdef USE_RFC2292BIS void *hbhbuf = NULL, *optp = NULL; int currentlen; -#else - u_int8_t raopt[IP6OPT_RTALERT_LEN]; -#endif struct in6_pktinfo *pi; struct cmsghdr *cmsgp; u_short rtalert_code = htons(IP6OPT_RTALERT_MLD); struct ifaddrs *ifa, *ifap; struct in6_addr src; dst.sin6_len = sizeof(dst); dst.sin6_family = AF_INET6; dst.sin6_addr = *addr; m.msg_name = (caddr_t)&dst; m.msg_namelen = dst.sin6_len; iov[0].iov_base = (caddr_t)&mldh; iov[0].iov_len = sizeof(mldh); m.msg_iov = iov; m.msg_iovlen = 1; bzero(&mldh, sizeof(mldh)); mldh.mld_type = type & 0xff; mldh.mld_maxdelay = htons(QUERY_RESPONSE_INTERVAL); mldh.mld_addr = *qaddr; /* MLD packet should be advertised from linklocal address */ getifaddrs(&ifa); for (ifap = ifa; ifap; ifap = ifap->ifa_next) { if (index != if_nametoindex(ifap->ifa_name)) continue; if (ifap->ifa_addr->sa_family != AF_INET6) continue; if (!IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) ifap->ifa_addr)->sin6_addr)) continue; break; } if (ifap == NULL) errx(1, "no linkocal address is available"); memcpy(&src, &((struct sockaddr_in6 *)ifap->ifa_addr)->sin6_addr, sizeof(src)); freeifaddrs(ifa); #ifdef __KAME__ /* remove embedded ifindex */ src.s6_addr[2] = src.s6_addr[3] = 0; #endif -#ifdef USE_RFC2292BIS if ((hbhlen = inet6_opt_init(NULL, 0)) == -1) errx(1, "inet6_opt_init(0) failed"); if ((hbhlen = inet6_opt_append(NULL, 0, hbhlen, IP6OPT_ROUTER_ALERT, 2, 2, NULL)) == -1) errx(1, "inet6_opt_append(0) failed"); if ((hbhlen = inet6_opt_finish(NULL, 0, hbhlen)) == -1) errx(1, "inet6_opt_finish(0) failed"); cmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) + CMSG_SPACE(hbhlen); -#else - hbhlen = sizeof(raopt); - cmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) + - inet6_option_space(hbhlen); -#endif if ((cmsgbuf = malloc(cmsglen)) == NULL) errx(1, "can't allocate enough memory for cmsg"); cmsgp = (struct cmsghdr *)cmsgbuf; m.msg_control = (caddr_t)cmsgbuf; m.msg_controllen = cmsglen; /* specify the outgoing interface */ cmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); cmsgp->cmsg_level = IPPROTO_IPV6; cmsgp->cmsg_type = IPV6_PKTINFO; pi = (struct in6_pktinfo *)CMSG_DATA(cmsgp); pi->ipi6_ifindex = index; memcpy(&pi->ipi6_addr, &src, sizeof(pi->ipi6_addr)); /* specifiy to insert router alert option in a hop-by-hop opt hdr. */ cmsgp = CMSG_NXTHDR(&m, cmsgp); -#ifdef USE_RFC2292BIS cmsgp->cmsg_len = CMSG_LEN(hbhlen); cmsgp->cmsg_level = IPPROTO_IPV6; cmsgp->cmsg_type = IPV6_HOPOPTS; hbhbuf = CMSG_DATA(cmsgp); if ((currentlen = inet6_opt_init(hbhbuf, hbhlen)) == -1) errx(1, "inet6_opt_init(len = %d) failed", hbhlen); if ((currentlen = inet6_opt_append(hbhbuf, hbhlen, currentlen, IP6OPT_ROUTER_ALERT, 2, 2, &optp)) == -1) errx(1, "inet6_opt_append(currentlen = %d, hbhlen = %d) failed", currentlen, hbhlen); (void)inet6_opt_set_val(optp, 0, &rtalert_code, sizeof(rtalert_code)); if ((currentlen = inet6_opt_finish(hbhbuf, hbhlen, currentlen)) == -1) errx(1, "inet6_opt_finish(buf) failed"); -#else /* old advanced API */ - if (inet6_option_init((void *)cmsgp, &cmsgp, IPV6_HOPOPTS)) - errx(1, "inet6_option_init failed\n"); - raopt[0] = IP6OPT_ROUTER_ALERT; - raopt[1] = IP6OPT_RTALERT_LEN - 2; - memcpy(&raopt[2], (caddr_t)&rtalert_code, sizeof(u_short)); - if (inet6_option_append(cmsgp, raopt, 4, 0)) - errx(1, "inet6_option_append failed\n"); -#endif } void dump(int s) { int i; struct mld_hdr *mld; u_char buf[1024]; struct sockaddr_in6 from; int from_len = sizeof(from); char ntop_buf[256]; if ((i = recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr *)&from, &from_len)) < 0) return; if (i < sizeof(struct mld_hdr)) { printf("too short!\n"); return; } mld = (struct mld_hdr *)buf; printf("from %s, ", inet_ntop(AF_INET6, &from.sin6_addr, ntop_buf, sizeof(ntop_buf))); switch (mld->mld_type) { case ICMP6_MEMBERSHIP_QUERY: printf("type=Multicast Listener Query, "); break; case ICMP6_MEMBERSHIP_REPORT: printf("type=Multicast Listener Report, "); break; case ICMP6_MEMBERSHIP_REDUCTION: printf("type=Multicast Listener Done, "); break; } printf("addr=%s\n", inet_ntop(AF_INET6, &mld->mld_addr, ntop_buf, sizeof(ntop_buf))); fflush(stdout); } void quit(int signum __unused) { mreq.ipv6mr_multiaddr = maddr; mreq.ipv6mr_interface = ifindex; if (setsockopt(s, IPPROTO_IPV6, IPV6_LEAVE_GROUP, &mreq, sizeof(mreq)) == -1) err(1, "setsockopt(IPV6_LEAVE_GROUP)"); exit(0); } void usage(void) { (void)fprintf(stderr, "usage: mld6query [-dgr] ifname [addr]\n"); exit(1); } Index: stable/12/usr.sbin/traceroute6/Makefile =================================================================== --- stable/12/usr.sbin/traceroute6/Makefile (revision 351940) +++ stable/12/usr.sbin/traceroute6/Makefile (revision 351941) @@ -1,32 +1,32 @@ # Copyright (c) 1996 WIDE Project. All rights reserved. # # Redistribution and use in source and binary forms, with or without # modifications, are permitted provided that the above copyright notice # and this paragraph are duplicated in all such forms and that any # documentation, advertising materials, and other materials related to # such distribution and use acknowledge that the software was developed # by the WIDE Project, Japan. The name of the Project may not be used to # endorse or promote products derived from this software without # specific prior written permission. THIS SOFTWARE IS PROVIDED ``AS IS'' # AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT # LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE. # $FreeBSD$ TRACEROUTE_DISTDIR?= ${SRCTOP}/contrib/traceroute .PATH: ${TRACEROUTE_DISTDIR} PROG= traceroute6 MAN= traceroute6.8 SRCS= as.c traceroute6.c BINOWN= root BINMODE= 4555 -CFLAGS+= -DIPSEC -DUSE_RFC2292BIS -DHAVE_POLL +CFLAGS+= -DIPSEC -DHAVE_POLL CFLAGS+= -I${.CURDIR} -I${TRACEROUTE_DISTDIR} -I. WARNS?= 3 LIBADD= ipsec .include Index: stable/12/usr.sbin/traceroute6/traceroute6.c =================================================================== --- stable/12/usr.sbin/traceroute6/traceroute6.c (revision 351940) +++ stable/12/usr.sbin/traceroute6/traceroute6.c (revision 351941) @@ -1,1729 +1,1708 @@ /* $KAME: traceroute6.c,v 1.68 2004/01/25 11:16:12 suz Exp $ */ /*- * SPDX-License-Identifier: BSD-3-Clause * * 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. */ /*- * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Van Jacobson. * * 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 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. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1990, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)traceroute.c 8.1 (Berkeley) 6/6/93"; #endif static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ /* * traceroute host - trace the route ip packets follow going to "host". * * Attempt to trace the route an ip packet would follow to some * internet host. We find out intermediate hops by launching probe * packets with a small ttl (time to live) then listening for an * icmp "time exceeded" reply from a gateway. We start our probes * with a ttl of one and increase by one until we get an icmp "port * unreachable" (which means we got to "host") or hit a max (which * defaults to 30 hops & can be changed with the -m flag). Three * probes (change with -q flag) are sent at each ttl setting and a * line is printed showing the ttl, address of the gateway and * round trip time of each probe. If the probe answers come from * different gateways, the address of each responding system will * be printed. If there is no response within a 5 sec. timeout * interval (changed with the -w flag), a "*" is printed for that * probe. * * Probe packets are UDP format. We don't want the destination * host to process them so the destination port is set to an * unlikely value (if some clod on the destination is using that * value, it can be changed with the -p flag). * * A sample use might be: * * [yak 71]% traceroute nis.nsf.net. * traceroute to nis.nsf.net (35.1.1.48), 30 hops max, 56 byte packet * 1 helios.ee.lbl.gov (128.3.112.1) 19 ms 19 ms 0 ms * 2 lilac-dmc.Berkeley.EDU (128.32.216.1) 39 ms 39 ms 19 ms * 3 lilac-dmc.Berkeley.EDU (128.32.216.1) 39 ms 39 ms 19 ms * 4 ccngw-ner-cc.Berkeley.EDU (128.32.136.23) 39 ms 40 ms 39 ms * 5 ccn-nerif22.Berkeley.EDU (128.32.168.22) 39 ms 39 ms 39 ms * 6 128.32.197.4 (128.32.197.4) 40 ms 59 ms 59 ms * 7 131.119.2.5 (131.119.2.5) 59 ms 59 ms 59 ms * 8 129.140.70.13 (129.140.70.13) 99 ms 99 ms 80 ms * 9 129.140.71.6 (129.140.71.6) 139 ms 239 ms 319 ms * 10 129.140.81.7 (129.140.81.7) 220 ms 199 ms 199 ms * 11 nic.merit.edu (35.1.1.48) 239 ms 239 ms 239 ms * * Note that lines 2 & 3 are the same. This is due to a buggy * kernel on the 2nd hop system -- lbl-csam.arpa -- that forwards * packets with a zero ttl. * * A more interesting example is: * * [yak 72]% traceroute allspice.lcs.mit.edu. * traceroute to allspice.lcs.mit.edu (18.26.0.115), 30 hops max * 1 helios.ee.lbl.gov (128.3.112.1) 0 ms 0 ms 0 ms * 2 lilac-dmc.Berkeley.EDU (128.32.216.1) 19 ms 19 ms 19 ms * 3 lilac-dmc.Berkeley.EDU (128.32.216.1) 39 ms 19 ms 19 ms * 4 ccngw-ner-cc.Berkeley.EDU (128.32.136.23) 19 ms 39 ms 39 ms * 5 ccn-nerif22.Berkeley.EDU (128.32.168.22) 20 ms 39 ms 39 ms * 6 128.32.197.4 (128.32.197.4) 59 ms 119 ms 39 ms * 7 131.119.2.5 (131.119.2.5) 59 ms 59 ms 39 ms * 8 129.140.70.13 (129.140.70.13) 80 ms 79 ms 99 ms * 9 129.140.71.6 (129.140.71.6) 139 ms 139 ms 159 ms * 10 129.140.81.7 (129.140.81.7) 199 ms 180 ms 300 ms * 11 129.140.72.17 (129.140.72.17) 300 ms 239 ms 239 ms * 12 * * * * 13 128.121.54.72 (128.121.54.72) 259 ms 499 ms 279 ms * 14 * * * * 15 * * * * 16 * * * * 17 * * * * 18 ALLSPICE.LCS.MIT.EDU (18.26.0.115) 339 ms 279 ms 279 ms * * (I start to see why I'm having so much trouble with mail to * MIT.) Note that the gateways 12, 14, 15, 16 & 17 hops away * either don't send ICMP "time exceeded" messages or send them * with a ttl too small to reach us. 14 - 17 are running the * MIT C Gateway code that doesn't send "time exceeded"s. God * only knows what's going on with 12. * * The silent gateway 12 in the above may be the result of a bug in * the 4.[23]BSD network code (and its derivatives): 4.x (x <= 3) * sends an unreachable message using whatever ttl remains in the * original datagram. Since, for gateways, the remaining ttl is * zero, the icmp "time exceeded" is guaranteed to not make it back * to us. The behavior of this bug is slightly more interesting * when it appears on the destination system: * * 1 helios.ee.lbl.gov (128.3.112.1) 0 ms 0 ms 0 ms * 2 lilac-dmc.Berkeley.EDU (128.32.216.1) 39 ms 19 ms 39 ms * 3 lilac-dmc.Berkeley.EDU (128.32.216.1) 19 ms 39 ms 19 ms * 4 ccngw-ner-cc.Berkeley.EDU (128.32.136.23) 39 ms 40 ms 19 ms * 5 ccn-nerif35.Berkeley.EDU (128.32.168.35) 39 ms 39 ms 39 ms * 6 csgw.Berkeley.EDU (128.32.133.254) 39 ms 59 ms 39 ms * 7 * * * * 8 * * * * 9 * * * * 10 * * * * 11 * * * * 12 * * * * 13 rip.Berkeley.EDU (128.32.131.22) 59 ms ! 39 ms ! 39 ms ! * * Notice that there are 12 "gateways" (13 is the final * destination) and exactly the last half of them are "missing". * What's really happening is that rip (a Sun-3 running Sun OS3.5) * is using the ttl from our arriving datagram as the ttl in its * icmp reply. So, the reply will time out on the return path * (with no notice sent to anyone since icmp's aren't sent for * icmp's) until we probe with a ttl that's at least twice the path * length. I.e., rip is really only 7 hops away. A reply that * returns with a ttl of 1 is a clue this problem exists. * Traceroute prints a "!" after the time if the ttl is <= 1. * Since vendors ship a lot of obsolete (DEC's Ultrix, Sun 3.x) or * non-standard (HPUX) software, expect to see this problem * frequently and/or take care picking the target host of your * probes. * * Other possible annotations after the time are !H, !N, !P (got a host, * network or protocol unreachable, respectively), !S or !F (source * route failed or fragmentation needed -- neither of these should * ever occur and the associated gateway is busted if you see one). If * almost all the probes result in some kind of unreachable, traceroute * will give up and exit. * * Notes * ----- * This program must be run by root or be setuid. (I suggest that * you *don't* make it setuid -- casual use could result in a lot * of unnecessary traffic on our poor, congested nets.) * * This program requires a kernel mod that does not appear in any * system available from Berkeley: A raw ip socket using proto * IPPROTO_RAW must interpret the data sent as an ip datagram (as * opposed to data to be wrapped in an ip datagram). See the README * file that came with the source to this program for a description * of the mods I made to /sys/netinet/raw_ip.c. Your mileage may * vary. But, again, ANY 4.x (x < 4) BSD KERNEL WILL HAVE TO BE * MODIFIED TO RUN THIS PROGRAM. * * The udp port usage may appear bizarre (well, ok, it is bizarre). * The problem is that an icmp message only contains 8 bytes of * data from the original datagram. 8 bytes is the size of a udp * header so, if we want to associate replies with the original * datagram, the necessary information must be encoded into the * udp header (the ip id could be used but there's no way to * interlock with the kernel's assignment of ip id's and, anyway, * it would have taken a lot more kernel hacking to allow this * code to set the ip id). So, to allow two or more users to * use traceroute simultaneously, we use this task's pid as the * source port (the high bit is set to move the port number out * of the "likely" range). To keep track of which probe is being * replied to (so times and/or hop counts don't get confused by a * reply that was delayed in transit), we increment the destination * port number before each probe. * * Don't use this as a coding example. I was trying to find a * routing problem and this code sort-of popped out after 48 hours * without sleep. I was amazed it ever compiled, much less ran. * * I stole the idea for this program from Steve Deering. Since * the first release, I've learned that had I attended the right * IETF working group meetings, I also could have stolen it from Guy * Almes or Matt Mathis. I don't know (or care) who came up with * the idea first. I envy the originators' perspicacity and I'm * glad they didn't keep the idea a secret. * * Tim Seaver, Ken Adelman and C. Philip Wood provided bug fixes and/or * enhancements to the original distribution. * * I've hacked up a round-trip-route version of this that works by * sending a loose-source-routed udp datagram through the destination * back to yourself. Unfortunately, SO many gateways botch source * routing, the thing is almost worthless. Maybe one day... * * -- Van Jacobson (van@helios.ee.lbl.gov) * Tue Dec 20 03:50:13 PST 1988 */ #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_POLL #include #endif #include #include #include #include #include #include #include #include #include #include #ifdef IPSEC #include #include #endif #include "as.h" #define DUMMY_PORT 10010 #define MAXPACKET 65535 /* max ip packet size */ #ifndef HAVE_GETIPNODEBYNAME #define getipnodebyname(x, y, z, u) gethostbyname2((x), (y)) #define freehostent(x) #endif u_char packet[512]; /* last inbound (icmp) packet */ char *outpacket; /* last output packet */ int main(int, char *[]); int wait_for_reply(int, struct msghdr *); #ifdef IPSEC #ifdef IPSEC_POLICY_IPSEC int setpolicy(int so, char *policy); #endif #endif void send_probe(int, u_long); void *get_uphdr(struct ip6_hdr *, u_char *); int get_hoplim(struct msghdr *); double deltaT(struct timeval *, struct timeval *); const char *pr_type(int); int packet_ok(struct msghdr *, int, int); void print(struct msghdr *, int); const char *inetname(struct sockaddr *); u_int32_t sctp_crc32c(void *, u_int32_t); u_int16_t in_cksum(u_int16_t *addr, int); u_int16_t tcp_chksum(struct sockaddr_in6 *, struct sockaddr_in6 *, void *, u_int32_t); void usage(void); int rcvsock; /* receive (icmp) socket file descriptor */ int sndsock; /* send (raw/udp) socket file descriptor */ struct msghdr rcvmhdr; struct iovec rcviov[2]; int rcvhlim; struct in6_pktinfo *rcvpktinfo; struct sockaddr_in6 Src, Dst, Rcv; u_long datalen = 20; /* How much data */ #define ICMP6ECHOLEN 8 /* XXX: 2064 = 127(max hops in type 0 rthdr) * sizeof(ip6_hdr) + 16(margin) */ char rtbuf[2064]; -#ifdef USE_RFC2292BIS struct ip6_rthdr *rth; -#endif struct cmsghdr *cmsg; char *source = NULL; char *hostname; u_long nprobes = 3; u_long first_hop = 1; u_long max_hops = 30; u_int16_t srcport; u_int16_t port = 32768+666; /* start udp dest port # for probe packets */ u_int16_t ident; int options; /* socket options */ int verbose; int waittime = 5; /* time to wait for response (in seconds) */ int nflag; /* print addresses numerically */ int useproto = IPPROTO_UDP; /* protocol to use to send packet */ int lflag; /* print both numerical address & hostname */ int as_path; /* print as numbers for each hop */ char *as_server = NULL; void *asn; int main(int argc, char *argv[]) { int mib[4] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_DEFHLIM }; char hbuf[NI_MAXHOST], src0[NI_MAXHOST], *ep; int ch, i, on = 1, seq, rcvcmsglen, error; struct addrinfo hints, *res; static u_char *rcvcmsgbuf; u_long probe, hops, lport; struct hostent *hp; size_t size, minlen; uid_t uid; /* * Receive ICMP */ if ((rcvsock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) < 0) { perror("socket(ICMPv6)"); exit(5); } size = sizeof(i); (void) sysctl(mib, sizeof(mib)/sizeof(mib[0]), &i, &size, NULL, 0); max_hops = i; /* specify to tell receiving interface */ #ifdef IPV6_RECVPKTINFO if (setsockopt(rcvsock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof(on)) < 0) err(1, "setsockopt(IPV6_RECVPKTINFO)"); #else /* old adv. API */ if (setsockopt(rcvsock, IPPROTO_IPV6, IPV6_PKTINFO, &on, sizeof(on)) < 0) err(1, "setsockopt(IPV6_PKTINFO)"); #endif /* specify to tell value of hoplimit field of received IP6 hdr */ #ifdef IPV6_RECVHOPLIMIT if (setsockopt(rcvsock, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &on, sizeof(on)) < 0) err(1, "setsockopt(IPV6_RECVHOPLIMIT)"); #else /* old adv. API */ if (setsockopt(rcvsock, IPPROTO_IPV6, IPV6_HOPLIMIT, &on, sizeof(on)) < 0) err(1, "setsockopt(IPV6_HOPLIMIT)"); #endif seq = 0; ident = htons(getpid() & 0xffff); /* same as ping6 */ while ((ch = getopt(argc, argv, "aA:df:g:Ilm:nNp:q:rs:STUvw:")) != -1) switch (ch) { case 'a': as_path = 1; break; case 'A': as_path = 1; as_server = optarg; break; case 'd': options |= SO_DEBUG; break; case 'f': ep = NULL; errno = 0; first_hop = strtoul(optarg, &ep, 0); if (errno || !*optarg || *ep || first_hop > 255) { fprintf(stderr, "traceroute6: invalid min hoplimit.\n"); exit(1); } break; case 'g': hp = getipnodebyname(optarg, AF_INET6, 0, &h_errno); if (hp == NULL) { fprintf(stderr, "traceroute6: unknown host %s\n", optarg); exit(1); } -#ifdef USE_RFC2292BIS if (rth == NULL) { /* * XXX: We can't detect the number of * intermediate nodes yet. */ if ((rth = inet6_rth_init((void *)rtbuf, sizeof(rtbuf), IPV6_RTHDR_TYPE_0, 0)) == NULL) { fprintf(stderr, "inet6_rth_init failed.\n"); exit(1); } } if (inet6_rth_add((void *)rth, (struct in6_addr *)hp->h_addr)) { fprintf(stderr, "inet6_rth_add failed for %s\n", optarg); exit(1); } -#else /* old advanced API */ - if (cmsg == NULL) - cmsg = inet6_rthdr_init(rtbuf, IPV6_RTHDR_TYPE_0); - inet6_rthdr_add(cmsg, (struct in6_addr *)hp->h_addr, - IPV6_RTHDR_LOOSE); -#endif freehostent(hp); break; case 'I': useproto = IPPROTO_ICMPV6; break; case 'l': lflag++; break; case 'm': ep = NULL; errno = 0; max_hops = strtoul(optarg, &ep, 0); if (errno || !*optarg || *ep || max_hops > 255) { fprintf(stderr, "traceroute6: invalid max hoplimit.\n"); exit(1); } break; case 'n': nflag++; break; case 'N': useproto = IPPROTO_NONE; break; case 'p': ep = NULL; errno = 0; lport = strtoul(optarg, &ep, 0); if (errno || !*optarg || *ep) { fprintf(stderr, "traceroute6: invalid port.\n"); exit(1); } if (lport == 0 || lport != (lport & 0xffff)) { fprintf(stderr, "traceroute6: port out of range.\n"); exit(1); } port = lport & 0xffff; break; case 'q': ep = NULL; errno = 0; nprobes = strtoul(optarg, &ep, 0); if (errno || !*optarg || *ep) { fprintf(stderr, "traceroute6: invalid nprobes.\n"); exit(1); } if (nprobes < 1) { fprintf(stderr, "traceroute6: nprobes must be >0.\n"); exit(1); } break; case 'r': options |= SO_DONTROUTE; break; case 's': /* * set the ip source address of the outbound * probe (e.g., on a multi-homed host). */ source = optarg; break; case 'S': useproto = IPPROTO_SCTP; break; case 'T': useproto = IPPROTO_TCP; break; case 'U': useproto = IPPROTO_UDP; break; case 'v': verbose++; break; case 'w': ep = NULL; errno = 0; waittime = strtoul(optarg, &ep, 0); if (errno || !*optarg || *ep) { fprintf(stderr, "traceroute6: invalid wait time.\n"); exit(1); } if (waittime < 1) { fprintf(stderr, "traceroute6: wait must be >= 1 sec.\n"); exit(1); } break; default: usage(); } argc -= optind; argv += optind; /* * Open socket to send probe packets. */ switch (useproto) { case IPPROTO_ICMPV6: sndsock = rcvsock; break; case IPPROTO_UDP: if ((sndsock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { perror("socket(SOCK_DGRAM)"); exit(5); } break; case IPPROTO_NONE: case IPPROTO_SCTP: case IPPROTO_TCP: if ((sndsock = socket(AF_INET6, SOCK_RAW, useproto)) < 0) { perror("socket(SOCK_RAW)"); exit(5); } break; default: fprintf(stderr, "traceroute6: unknown probe protocol %d\n", useproto); exit(5); } if (max_hops < first_hop) { fprintf(stderr, "traceroute6: max hoplimit must be larger than first hoplimit.\n"); exit(1); } /* revoke privs */ uid = getuid(); if (setresuid(uid, uid, uid) == -1) { perror("setresuid"); exit(1); } if (argc < 1 || argc > 2) usage(); #if 1 setvbuf(stdout, NULL, _IOLBF, BUFSIZ); #else setlinebuf(stdout); #endif memset(&hints, 0, sizeof(hints)); hints.ai_family = PF_INET6; hints.ai_socktype = SOCK_RAW; hints.ai_protocol = IPPROTO_ICMPV6; hints.ai_flags = AI_CANONNAME; error = getaddrinfo(*argv, NULL, &hints, &res); if (error) { fprintf(stderr, "traceroute6: %s\n", gai_strerror(error)); exit(1); } if (res->ai_addrlen != sizeof(Dst)) { fprintf(stderr, "traceroute6: size of sockaddr mismatch\n"); exit(1); } memcpy(&Dst, res->ai_addr, res->ai_addrlen); hostname = res->ai_canonname ? strdup(res->ai_canonname) : *argv; if (!hostname) { fprintf(stderr, "traceroute6: not enough core\n"); exit(1); } if (res->ai_next) { if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) strlcpy(hbuf, "?", sizeof(hbuf)); fprintf(stderr, "traceroute6: Warning: %s has multiple " "addresses; using %s\n", hostname, hbuf); } if (*++argv) { ep = NULL; errno = 0; datalen = strtoul(*argv, &ep, 0); if (errno || *ep) { fprintf(stderr, "traceroute6: invalid packet length.\n"); exit(1); } } switch (useproto) { case IPPROTO_ICMPV6: minlen = ICMP6ECHOLEN; break; case IPPROTO_UDP: minlen = sizeof(struct udphdr); break; case IPPROTO_NONE: minlen = 0; datalen = 0; break; case IPPROTO_SCTP: minlen = sizeof(struct sctphdr); break; case IPPROTO_TCP: minlen = sizeof(struct tcphdr); break; default: fprintf(stderr, "traceroute6: unknown probe protocol %d.\n", useproto); exit(1); } if (datalen < minlen) datalen = minlen; else if (datalen >= MAXPACKET) { fprintf(stderr, "traceroute6: packet size must be %zu <= s < %d.\n", minlen, MAXPACKET); exit(1); } if (useproto == IPPROTO_UDP) datalen -= sizeof(struct udphdr); if ((useproto == IPPROTO_SCTP) && (datalen & 3)) { fprintf(stderr, "traceroute6: packet size must be a multiple of 4.\n"); exit(1); } outpacket = malloc(datalen); if (!outpacket) { perror("malloc"); exit(1); } (void) bzero((char *)outpacket, datalen); /* initialize msghdr for receiving packets */ rcviov[0].iov_base = (caddr_t)packet; rcviov[0].iov_len = sizeof(packet); rcvmhdr.msg_name = (caddr_t)&Rcv; rcvmhdr.msg_namelen = sizeof(Rcv); rcvmhdr.msg_iov = rcviov; rcvmhdr.msg_iovlen = 1; rcvcmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) + CMSG_SPACE(sizeof(int)); if ((rcvcmsgbuf = malloc(rcvcmsglen)) == NULL) { fprintf(stderr, "traceroute6: malloc failed\n"); exit(1); } rcvmhdr.msg_control = (caddr_t) rcvcmsgbuf; rcvmhdr.msg_controllen = rcvcmsglen; if (options & SO_DEBUG) (void) setsockopt(rcvsock, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof(on)); if (options & SO_DONTROUTE) (void) setsockopt(rcvsock, SOL_SOCKET, SO_DONTROUTE, (char *)&on, sizeof(on)); #ifdef IPSEC #ifdef IPSEC_POLICY_IPSEC /* * do not raise error even if setsockopt fails, kernel may have ipsec * turned off. */ if (setpolicy(rcvsock, "in bypass") < 0) errx(1, "%s", ipsec_strerror()); if (setpolicy(rcvsock, "out bypass") < 0) errx(1, "%s", ipsec_strerror()); #else { int level = IPSEC_LEVEL_NONE; (void)setsockopt(rcvsock, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL, &level, sizeof(level)); (void)setsockopt(rcvsock, IPPROTO_IPV6, IPV6_ESP_NETWORK_LEVEL, &level, sizeof(level)); #ifdef IP_AUTH_TRANS_LEVEL (void)setsockopt(rcvsock, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL, &level, sizeof(level)); #else (void)setsockopt(rcvsock, IPPROTO_IPV6, IPV6_AUTH_LEVEL, &level, sizeof(level)); #endif #ifdef IP_AUTH_NETWORK_LEVEL (void)setsockopt(rcvsock, IPPROTO_IPV6, IPV6_AUTH_NETWORK_LEVEL, &level, sizeof(level)); #endif } #endif /*IPSEC_POLICY_IPSEC*/ #endif /*IPSEC*/ #ifdef SO_SNDBUF i = datalen; if (i == 0) i = 1; if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&i, sizeof(i)) < 0) { perror("setsockopt(SO_SNDBUF)"); exit(6); } #endif /* SO_SNDBUF */ if (options & SO_DEBUG) (void) setsockopt(sndsock, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof(on)); if (options & SO_DONTROUTE) (void) setsockopt(sndsock, SOL_SOCKET, SO_DONTROUTE, (char *)&on, sizeof(on)); -#ifdef USE_RFC2292BIS if (rth) {/* XXX: there is no library to finalize the header... */ rth->ip6r_len = rth->ip6r_segleft * 2; if (setsockopt(sndsock, IPPROTO_IPV6, IPV6_RTHDR, (void *)rth, (rth->ip6r_len + 1) << 3)) { fprintf(stderr, "setsockopt(IPV6_RTHDR): %s\n", strerror(errno)); exit(1); } } -#else /* old advanced API */ - if (cmsg != NULL) { - inet6_rthdr_lasthop(cmsg, IPV6_RTHDR_LOOSE); - if (setsockopt(sndsock, IPPROTO_IPV6, IPV6_PKTOPTIONS, - rtbuf, cmsg->cmsg_len) < 0) { - fprintf(stderr, "setsockopt(IPV6_PKTOPTIONS): %s\n", - strerror(errno)); - exit(1); - } - } -#endif /* USE_RFC2292BIS */ #ifdef IPSEC #ifdef IPSEC_POLICY_IPSEC /* * do not raise error even if setsockopt fails, kernel may have ipsec * turned off. */ if (setpolicy(sndsock, "in bypass") < 0) errx(1, "%s", ipsec_strerror()); if (setpolicy(sndsock, "out bypass") < 0) errx(1, "%s", ipsec_strerror()); #else { int level = IPSEC_LEVEL_BYPASS; (void)setsockopt(sndsock, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL, &level, sizeof(level)); (void)setsockopt(sndsock, IPPROTO_IPV6, IPV6_ESP_NETWORK_LEVEL, &level, sizeof(level)); #ifdef IP_AUTH_TRANS_LEVEL (void)setsockopt(sndsock, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL, &level, sizeof(level)); #else (void)setsockopt(sndsock, IPPROTO_IPV6, IPV6_AUTH_LEVEL, &level, sizeof(level)); #endif #ifdef IP_AUTH_NETWORK_LEVEL (void)setsockopt(sndsock, IPPROTO_IPV6, IPV6_AUTH_NETWORK_LEVEL, &level, sizeof(level)); #endif } #endif /*IPSEC_POLICY_IPSEC*/ #endif /*IPSEC*/ /* * Source selection */ bzero(&Src, sizeof(Src)); if (source) { struct addrinfo hints, *res; int error; memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_INET6; hints.ai_socktype = SOCK_DGRAM; /*dummy*/ hints.ai_flags = AI_NUMERICHOST; error = getaddrinfo(source, "0", &hints, &res); if (error) { printf("traceroute6: %s: %s\n", source, gai_strerror(error)); exit(1); } if (res->ai_addrlen > sizeof(Src)) { printf("traceroute6: %s: %s\n", source, gai_strerror(error)); exit(1); } memcpy(&Src, res->ai_addr, res->ai_addrlen); freeaddrinfo(res); } else { struct sockaddr_in6 Nxt; int dummy; socklen_t len; Nxt = Dst; Nxt.sin6_port = htons(DUMMY_PORT); if (cmsg != NULL) bcopy(inet6_rthdr_getaddr(cmsg, 1), &Nxt.sin6_addr, sizeof(Nxt.sin6_addr)); if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { perror("socket"); exit(1); } if (connect(dummy, (struct sockaddr *)&Nxt, Nxt.sin6_len) < 0) { perror("connect"); exit(1); } len = sizeof(Src); if (getsockname(dummy, (struct sockaddr *)&Src, &len) < 0) { perror("getsockname"); exit(1); } if (getnameinfo((struct sockaddr *)&Src, Src.sin6_len, src0, sizeof(src0), NULL, 0, NI_NUMERICHOST)) { fprintf(stderr, "getnameinfo failed for source\n"); exit(1); } source = src0; close(dummy); } Src.sin6_port = htons(0); if (bind(sndsock, (struct sockaddr *)&Src, Src.sin6_len) < 0) { perror("bind"); exit(1); } { socklen_t len; len = sizeof(Src); if (getsockname(sndsock, (struct sockaddr *)&Src, &len) < 0) { perror("getsockname"); exit(1); } srcport = ntohs(Src.sin6_port); } if (as_path) { asn = as_setup(as_server); if (asn == NULL) { fprintf(stderr, "traceroute6: as_setup failed, AS# lookups" " disabled\n"); (void)fflush(stderr); as_path = 0; } } /* * Message to users */ if (getnameinfo((struct sockaddr *)&Dst, Dst.sin6_len, hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST)) strlcpy(hbuf, "(invalid)", sizeof(hbuf)); fprintf(stderr, "traceroute6"); fprintf(stderr, " to %s (%s)", hostname, hbuf); if (source) fprintf(stderr, " from %s", source); fprintf(stderr, ", %lu hops max, %lu byte packets\n", max_hops, datalen + ((useproto == IPPROTO_UDP) ? sizeof(struct udphdr) : 0)); (void) fflush(stderr); if (first_hop > 1) printf("Skipping %lu intermediate hops\n", first_hop - 1); /* * Main loop */ for (hops = first_hop; hops <= max_hops; ++hops) { struct in6_addr lastaddr; int got_there = 0; unsigned unreachable = 0; printf("%2lu ", hops); bzero(&lastaddr, sizeof(lastaddr)); for (probe = 0; probe < nprobes; ++probe) { int cc; struct timeval t1, t2; (void) gettimeofday(&t1, NULL); send_probe(++seq, hops); while ((cc = wait_for_reply(rcvsock, &rcvmhdr))) { (void) gettimeofday(&t2, NULL); if ((i = packet_ok(&rcvmhdr, cc, seq))) { if (!IN6_ARE_ADDR_EQUAL(&Rcv.sin6_addr, &lastaddr)) { if (probe > 0) fputs("\n ", stdout); print(&rcvmhdr, cc); lastaddr = Rcv.sin6_addr; } printf(" %.3f ms", deltaT(&t1, &t2)); switch (i - 1) { case ICMP6_DST_UNREACH_NOROUTE: ++unreachable; printf(" !N"); break; case ICMP6_DST_UNREACH_ADMIN: ++unreachable; printf(" !P"); break; case ICMP6_DST_UNREACH_NOTNEIGHBOR: ++unreachable; printf(" !S"); break; case ICMP6_DST_UNREACH_ADDR: ++unreachable; printf(" !A"); break; case ICMP6_DST_UNREACH_NOPORT: if (rcvhlim >= 0 && rcvhlim <= 1) printf(" !"); ++got_there; break; } break; } else if (deltaT(&t1, &t2) > waittime * 1000) { cc = 0; break; } } if (cc == 0) printf(" *"); (void) fflush(stdout); } putchar('\n'); if (got_there || (unreachable > 0 && unreachable >= ((nprobes + 1) / 2))) { exit(0); } } if (as_path) as_shutdown(asn); exit(0); } int wait_for_reply(int sock, struct msghdr *mhdr) { #ifdef HAVE_POLL struct pollfd pfd[1]; int cc = 0; pfd[0].fd = sock; pfd[0].events = POLLIN; pfd[0].revents = 0; if (poll(pfd, 1, waittime * 1000) > 0) cc = recvmsg(rcvsock, mhdr, 0); return(cc); #else fd_set *fdsp; struct timeval wait; int cc = 0, fdsn; fdsn = howmany(sock + 1, NFDBITS) * sizeof(fd_mask); if ((fdsp = (fd_set *)malloc(fdsn)) == NULL) err(1, "malloc"); memset(fdsp, 0, fdsn); FD_SET(sock, fdsp); wait.tv_sec = waittime; wait.tv_usec = 0; if (select(sock+1, fdsp, (fd_set *)0, (fd_set *)0, &wait) > 0) cc = recvmsg(rcvsock, mhdr, 0); free(fdsp); return(cc); #endif } #ifdef IPSEC #ifdef IPSEC_POLICY_IPSEC int setpolicy(so, policy) int so; char *policy; { char *buf; buf = ipsec_set_policy(policy, strlen(policy)); if (buf == NULL) { warnx("%s", ipsec_strerror()); return -1; } (void)setsockopt(so, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf, ipsec_get_policylen(buf)); free(buf); return 0; } #endif #endif void send_probe(int seq, u_long hops) { struct icmp6_hdr *icp; struct sctphdr *sctp; struct sctp_chunkhdr *chk; struct sctp_init_chunk *init; struct sctp_paramhdr *param; struct tcphdr *tcp; int i; i = hops; if (setsockopt(sndsock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, (char *)&i, sizeof(i)) < 0) { perror("setsockopt IPV6_UNICAST_HOPS"); } Dst.sin6_port = htons(port + seq); switch (useproto) { case IPPROTO_ICMPV6: icp = (struct icmp6_hdr *)outpacket; icp->icmp6_type = ICMP6_ECHO_REQUEST; icp->icmp6_code = 0; icp->icmp6_cksum = 0; icp->icmp6_id = ident; icp->icmp6_seq = htons(seq); break; case IPPROTO_UDP: break; case IPPROTO_NONE: /* No space for anything. No harm as seq/tv32 are decorative. */ break; case IPPROTO_SCTP: sctp = (struct sctphdr *)outpacket; sctp->src_port = htons(ident); sctp->dest_port = htons(port + seq); if (datalen >= (u_long)(sizeof(struct sctphdr) + sizeof(struct sctp_init_chunk))) { sctp->v_tag = 0; } else { sctp->v_tag = (sctp->src_port << 16) | sctp->dest_port; } sctp->checksum = htonl(0); if (datalen >= (u_long)(sizeof(struct sctphdr) + sizeof(struct sctp_init_chunk))) { /* * Send a packet containing an INIT chunk. This works * better in case of firewalls on the path, but * results in a probe packet containing at least * 32 bytes of payload. For shorter payloads, use * SHUTDOWN-ACK chunks. */ init = (struct sctp_init_chunk *)(sctp + 1); init->ch.chunk_type = SCTP_INITIATION; init->ch.chunk_flags = 0; init->ch.chunk_length = htons((u_int16_t)(datalen - sizeof(struct sctphdr))); init->init.initiate_tag = (sctp->src_port << 16) | sctp->dest_port; init->init.a_rwnd = htonl(1500); init->init.num_outbound_streams = htons(1); init->init.num_inbound_streams = htons(1); init->init.initial_tsn = htonl(0); if (datalen >= (u_long)(sizeof(struct sctphdr) + sizeof(struct sctp_init_chunk) + sizeof(struct sctp_paramhdr))) { param = (struct sctp_paramhdr *)(init + 1); param->param_type = htons(SCTP_PAD); param->param_length = htons((u_int16_t)(datalen - sizeof(struct sctphdr) - sizeof(struct sctp_init_chunk))); } } else { /* * Send a packet containing a SHUTDOWN-ACK chunk, * possibly followed by a PAD chunk. */ if (datalen >= (u_long)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr))) { chk = (struct sctp_chunkhdr *)(sctp + 1); chk->chunk_type = SCTP_SHUTDOWN_ACK; chk->chunk_flags = 0; chk->chunk_length = htons(4); } if (datalen >= (u_long)(sizeof(struct sctphdr) + 2 * sizeof(struct sctp_chunkhdr))) { chk = chk + 1; chk->chunk_type = SCTP_PAD_CHUNK; chk->chunk_flags = 0; chk->chunk_length = htons((u_int16_t)(datalen - sizeof(struct sctphdr) - sizeof(struct sctp_chunkhdr))); } } sctp->checksum = sctp_crc32c(outpacket, datalen); break; case IPPROTO_TCP: tcp = (struct tcphdr *)outpacket; tcp->th_sport = htons(ident); tcp->th_dport = htons(port + seq); tcp->th_seq = (tcp->th_sport << 16) | tcp->th_dport; tcp->th_ack = 0; tcp->th_off = 5; tcp->th_flags = TH_SYN; tcp->th_sum = 0; tcp->th_sum = tcp_chksum(&Src, &Dst, outpacket, datalen); break; default: fprintf(stderr, "Unknown probe protocol %d.\n", useproto); exit(1); } i = sendto(sndsock, (char *)outpacket, datalen, 0, (struct sockaddr *)&Dst, Dst.sin6_len); if (i < 0 || (u_long)i != datalen) { if (i < 0) perror("sendto"); printf("traceroute6: wrote %s %lu chars, ret=%d\n", hostname, datalen, i); (void) fflush(stdout); } } int get_hoplim(struct msghdr *mhdr) { struct cmsghdr *cm; for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_HOPLIMIT && cm->cmsg_len == CMSG_LEN(sizeof(int))) return(*(int *)CMSG_DATA(cm)); } return(-1); } double deltaT(struct timeval *t1p, struct timeval *t2p) { double dt; dt = (double)(t2p->tv_sec - t1p->tv_sec) * 1000.0 + (double)(t2p->tv_usec - t1p->tv_usec) / 1000.0; return (dt); } /* * Convert an ICMP "type" field to a printable string. */ const char * pr_type(int t0) { u_char t = t0 & 0xff; const char *cp; switch (t) { case ICMP6_DST_UNREACH: cp = "Destination Unreachable"; break; case ICMP6_PACKET_TOO_BIG: cp = "Packet Too Big"; break; case ICMP6_TIME_EXCEEDED: cp = "Time Exceeded"; break; case ICMP6_PARAM_PROB: cp = "Parameter Problem"; break; case ICMP6_ECHO_REQUEST: cp = "Echo Request"; break; case ICMP6_ECHO_REPLY: cp = "Echo Reply"; break; case ICMP6_MEMBERSHIP_QUERY: cp = "Group Membership Query"; break; case ICMP6_MEMBERSHIP_REPORT: cp = "Group Membership Report"; break; case ICMP6_MEMBERSHIP_REDUCTION: cp = "Group Membership Reduction"; break; case ND_ROUTER_SOLICIT: cp = "Router Solicitation"; break; case ND_ROUTER_ADVERT: cp = "Router Advertisement"; break; case ND_NEIGHBOR_SOLICIT: cp = "Neighbor Solicitation"; break; case ND_NEIGHBOR_ADVERT: cp = "Neighbor Advertisement"; break; case ND_REDIRECT: cp = "Redirect"; break; default: cp = "Unknown"; break; } return cp; } int packet_ok(struct msghdr *mhdr, int cc, int seq) { struct icmp6_hdr *icp; struct sockaddr_in6 *from = (struct sockaddr_in6 *)mhdr->msg_name; u_char type, code; char *buf = (char *)mhdr->msg_iov[0].iov_base; struct cmsghdr *cm; int *hlimp; char hbuf[NI_MAXHOST]; #ifdef OLDRAWSOCKET int hlen; struct ip6_hdr *ip; #endif #ifdef OLDRAWSOCKET ip = (struct ip6_hdr *) buf; hlen = sizeof(struct ip6_hdr); if (cc < hlen + sizeof(struct icmp6_hdr)) { if (verbose) { if (getnameinfo((struct sockaddr *)from, from->sin6_len, hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) strlcpy(hbuf, "invalid", sizeof(hbuf)); printf("packet too short (%d bytes) from %s\n", cc, hbuf); } return (0); } cc -= hlen; icp = (struct icmp6_hdr *)(buf + hlen); #else if (cc < (int)sizeof(struct icmp6_hdr)) { if (verbose) { if (getnameinfo((struct sockaddr *)from, from->sin6_len, hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) strlcpy(hbuf, "invalid", sizeof(hbuf)); printf("data too short (%d bytes) from %s\n", cc, hbuf); } return(0); } icp = (struct icmp6_hdr *)buf; #endif /* get optional information via advanced API */ rcvpktinfo = NULL; hlimp = NULL; for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_PKTINFO && cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) rcvpktinfo = (struct in6_pktinfo *)(CMSG_DATA(cm)); if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_HOPLIMIT && cm->cmsg_len == CMSG_LEN(sizeof(int))) hlimp = (int *)CMSG_DATA(cm); } if (rcvpktinfo == NULL || hlimp == NULL) { warnx("failed to get received hop limit or packet info"); #if 0 return(0); #else rcvhlim = 0; /*XXX*/ #endif } else rcvhlim = *hlimp; type = icp->icmp6_type; code = icp->icmp6_code; if ((type == ICMP6_TIME_EXCEEDED && code == ICMP6_TIME_EXCEED_TRANSIT) || type == ICMP6_DST_UNREACH) { struct ip6_hdr *hip; struct icmp6_hdr *icmp; struct sctp_init_chunk *init; struct sctphdr *sctp; struct tcphdr *tcp; struct udphdr *udp; void *up; hip = (struct ip6_hdr *)(icp + 1); if ((up = get_uphdr(hip, (u_char *)(buf + cc))) == NULL) { if (verbose) warnx("failed to get upper layer header"); return(0); } switch (useproto) { case IPPROTO_ICMPV6: icmp = (struct icmp6_hdr *)up; if (icmp->icmp6_id == ident && icmp->icmp6_seq == htons(seq)) return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1); break; case IPPROTO_UDP: udp = (struct udphdr *)up; if (udp->uh_sport == htons(srcport) && udp->uh_dport == htons(port + seq)) return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1); break; case IPPROTO_SCTP: sctp = (struct sctphdr *)up; if (sctp->src_port != htons(ident) || sctp->dest_port != htons(port + seq)) { break; } if (datalen >= (u_long)(sizeof(struct sctphdr) + sizeof(struct sctp_init_chunk))) { if (sctp->v_tag != 0) { break; } init = (struct sctp_init_chunk *)(sctp + 1); /* Check the initiate tag, if available. */ if ((char *)&init->init.a_rwnd > buf + cc) { return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1); } if (init->init.initiate_tag == (u_int32_t) ((sctp->src_port << 16) | sctp->dest_port)) { return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1); } } else { if (sctp->v_tag == (u_int32_t)((sctp->src_port << 16) | sctp->dest_port)) { return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1); } } break; case IPPROTO_TCP: tcp = (struct tcphdr *)up; if (tcp->th_sport == htons(ident) && tcp->th_dport == htons(port + seq) && tcp->th_seq == (tcp_seq)((tcp->th_sport << 16) | tcp->th_dport)) return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1); break; case IPPROTO_NONE: return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1); default: fprintf(stderr, "Unknown probe proto %d.\n", useproto); break; } } else if (useproto == IPPROTO_ICMPV6 && type == ICMP6_ECHO_REPLY) { if (icp->icmp6_id == ident && icp->icmp6_seq == htons(seq)) return (ICMP6_DST_UNREACH_NOPORT + 1); } if (verbose) { char sbuf[NI_MAXHOST+1], dbuf[INET6_ADDRSTRLEN]; u_int8_t *p; int i; if (getnameinfo((struct sockaddr *)from, from->sin6_len, sbuf, sizeof(sbuf), NULL, 0, NI_NUMERICHOST) != 0) strlcpy(sbuf, "invalid", sizeof(sbuf)); printf("\n%d bytes from %s to %s", cc, sbuf, rcvpktinfo ? inet_ntop(AF_INET6, &rcvpktinfo->ipi6_addr, dbuf, sizeof(dbuf)) : "?"); printf(": icmp type %d (%s) code %d\n", type, pr_type(type), icp->icmp6_code); p = (u_int8_t *)(icp + 1); #define WIDTH 16 for (i = 0; i < cc; i++) { if (i % WIDTH == 0) printf("%04x:", i); if (i % 4 == 0) printf(" "); printf("%02x", p[i]); if (i % WIDTH == WIDTH - 1) printf("\n"); } if (cc % WIDTH != 0) printf("\n"); } return(0); } /* * Increment pointer until find the UDP or ICMP header. */ void * get_uphdr(struct ip6_hdr *ip6, u_char *lim) { u_char *cp = (u_char *)ip6, nh; int hlen; static u_char none_hdr[1]; /* Fake pointer for IPPROTO_NONE. */ if (cp + sizeof(*ip6) > lim) return(NULL); nh = ip6->ip6_nxt; cp += sizeof(struct ip6_hdr); while (lim - cp >= (nh == IPPROTO_NONE ? 0 : 8)) { switch (nh) { case IPPROTO_ESP: return(NULL); case IPPROTO_ICMPV6: return(useproto == nh ? cp : NULL); case IPPROTO_SCTP: case IPPROTO_TCP: case IPPROTO_UDP: return(useproto == nh ? cp : NULL); case IPPROTO_NONE: return(useproto == nh ? none_hdr : NULL); case IPPROTO_FRAGMENT: hlen = sizeof(struct ip6_frag); nh = ((struct ip6_frag *)cp)->ip6f_nxt; break; case IPPROTO_AH: hlen = (((struct ip6_ext *)cp)->ip6e_len + 2) << 2; nh = ((struct ip6_ext *)cp)->ip6e_nxt; break; default: hlen = (((struct ip6_ext *)cp)->ip6e_len + 1) << 3; nh = ((struct ip6_ext *)cp)->ip6e_nxt; break; } cp += hlen; } return(NULL); } void print(struct msghdr *mhdr, int cc) { struct sockaddr_in6 *from = (struct sockaddr_in6 *)mhdr->msg_name; char hbuf[NI_MAXHOST]; if (getnameinfo((struct sockaddr *)from, from->sin6_len, hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) strlcpy(hbuf, "invalid", sizeof(hbuf)); if (as_path) printf(" [AS%u]", as_lookup(asn, hbuf, AF_INET6)); if (nflag) printf(" %s", hbuf); else if (lflag) printf(" %s (%s)", inetname((struct sockaddr *)from), hbuf); else printf(" %s", inetname((struct sockaddr *)from)); if (verbose) { #ifdef OLDRAWSOCKET printf(" %d bytes to %s", cc, rcvpktinfo ? inet_ntop(AF_INET6, &rcvpktinfo->ipi6_addr, hbuf, sizeof(hbuf)) : "?"); #else printf(" %d bytes of data to %s", cc, rcvpktinfo ? inet_ntop(AF_INET6, &rcvpktinfo->ipi6_addr, hbuf, sizeof(hbuf)) : "?"); #endif } } /* * Construct an Internet address representation. * If the nflag has been supplied, give * numeric value, otherwise try for symbolic name. */ const char * inetname(struct sockaddr *sa) { static char line[NI_MAXHOST], domain[MAXHOSTNAMELEN + 1]; static int first = 1; char *cp; if (first && !nflag) { first = 0; if (gethostname(domain, sizeof(domain)) == 0 && (cp = strchr(domain, '.'))) (void) strlcpy(domain, cp + 1, sizeof(domain)); else domain[0] = 0; } cp = NULL; if (!nflag) { if (getnameinfo(sa, sa->sa_len, line, sizeof(line), NULL, 0, NI_NAMEREQD) == 0) { if ((cp = strchr(line, '.')) && !strcmp(cp + 1, domain)) *cp = 0; cp = line; } } if (cp) return cp; if (getnameinfo(sa, sa->sa_len, line, sizeof(line), NULL, 0, NI_NUMERICHOST) != 0) strlcpy(line, "invalid", sizeof(line)); return line; } /* * CRC32C routine for the Stream Control Transmission Protocol */ #define CRC32C(c, d) (c = (c>>8) ^ crc_c[(c^(d))&0xFF]) static u_int32_t crc_c[256] = { 0x00000000, 0xF26B8303, 0xE13B70F7, 0x1350F3F4, 0xC79A971F, 0x35F1141C, 0x26A1E7E8, 0xD4CA64EB, 0x8AD958CF, 0x78B2DBCC, 0x6BE22838, 0x9989AB3B, 0x4D43CFD0, 0xBF284CD3, 0xAC78BF27, 0x5E133C24, 0x105EC76F, 0xE235446C, 0xF165B798, 0x030E349B, 0xD7C45070, 0x25AFD373, 0x36FF2087, 0xC494A384, 0x9A879FA0, 0x68EC1CA3, 0x7BBCEF57, 0x89D76C54, 0x5D1D08BF, 0xAF768BBC, 0xBC267848, 0x4E4DFB4B, 0x20BD8EDE, 0xD2D60DDD, 0xC186FE29, 0x33ED7D2A, 0xE72719C1, 0x154C9AC2, 0x061C6936, 0xF477EA35, 0xAA64D611, 0x580F5512, 0x4B5FA6E6, 0xB93425E5, 0x6DFE410E, 0x9F95C20D, 0x8CC531F9, 0x7EAEB2FA, 0x30E349B1, 0xC288CAB2, 0xD1D83946, 0x23B3BA45, 0xF779DEAE, 0x05125DAD, 0x1642AE59, 0xE4292D5A, 0xBA3A117E, 0x4851927D, 0x5B016189, 0xA96AE28A, 0x7DA08661, 0x8FCB0562, 0x9C9BF696, 0x6EF07595, 0x417B1DBC, 0xB3109EBF, 0xA0406D4B, 0x522BEE48, 0x86E18AA3, 0x748A09A0, 0x67DAFA54, 0x95B17957, 0xCBA24573, 0x39C9C670, 0x2A993584, 0xD8F2B687, 0x0C38D26C, 0xFE53516F, 0xED03A29B, 0x1F682198, 0x5125DAD3, 0xA34E59D0, 0xB01EAA24, 0x42752927, 0x96BF4DCC, 0x64D4CECF, 0x77843D3B, 0x85EFBE38, 0xDBFC821C, 0x2997011F, 0x3AC7F2EB, 0xC8AC71E8, 0x1C661503, 0xEE0D9600, 0xFD5D65F4, 0x0F36E6F7, 0x61C69362, 0x93AD1061, 0x80FDE395, 0x72966096, 0xA65C047D, 0x5437877E, 0x4767748A, 0xB50CF789, 0xEB1FCBAD, 0x197448AE, 0x0A24BB5A, 0xF84F3859, 0x2C855CB2, 0xDEEEDFB1, 0xCDBE2C45, 0x3FD5AF46, 0x7198540D, 0x83F3D70E, 0x90A324FA, 0x62C8A7F9, 0xB602C312, 0x44694011, 0x5739B3E5, 0xA55230E6, 0xFB410CC2, 0x092A8FC1, 0x1A7A7C35, 0xE811FF36, 0x3CDB9BDD, 0xCEB018DE, 0xDDE0EB2A, 0x2F8B6829, 0x82F63B78, 0x709DB87B, 0x63CD4B8F, 0x91A6C88C, 0x456CAC67, 0xB7072F64, 0xA457DC90, 0x563C5F93, 0x082F63B7, 0xFA44E0B4, 0xE9141340, 0x1B7F9043, 0xCFB5F4A8, 0x3DDE77AB, 0x2E8E845F, 0xDCE5075C, 0x92A8FC17, 0x60C37F14, 0x73938CE0, 0x81F80FE3, 0x55326B08, 0xA759E80B, 0xB4091BFF, 0x466298FC, 0x1871A4D8, 0xEA1A27DB, 0xF94AD42F, 0x0B21572C, 0xDFEB33C7, 0x2D80B0C4, 0x3ED04330, 0xCCBBC033, 0xA24BB5A6, 0x502036A5, 0x4370C551, 0xB11B4652, 0x65D122B9, 0x97BAA1BA, 0x84EA524E, 0x7681D14D, 0x2892ED69, 0xDAF96E6A, 0xC9A99D9E, 0x3BC21E9D, 0xEF087A76, 0x1D63F975, 0x0E330A81, 0xFC588982, 0xB21572C9, 0x407EF1CA, 0x532E023E, 0xA145813D, 0x758FE5D6, 0x87E466D5, 0x94B49521, 0x66DF1622, 0x38CC2A06, 0xCAA7A905, 0xD9F75AF1, 0x2B9CD9F2, 0xFF56BD19, 0x0D3D3E1A, 0x1E6DCDEE, 0xEC064EED, 0xC38D26C4, 0x31E6A5C7, 0x22B65633, 0xD0DDD530, 0x0417B1DB, 0xF67C32D8, 0xE52CC12C, 0x1747422F, 0x49547E0B, 0xBB3FFD08, 0xA86F0EFC, 0x5A048DFF, 0x8ECEE914, 0x7CA56A17, 0x6FF599E3, 0x9D9E1AE0, 0xD3D3E1AB, 0x21B862A8, 0x32E8915C, 0xC083125F, 0x144976B4, 0xE622F5B7, 0xF5720643, 0x07198540, 0x590AB964, 0xAB613A67, 0xB831C993, 0x4A5A4A90, 0x9E902E7B, 0x6CFBAD78, 0x7FAB5E8C, 0x8DC0DD8F, 0xE330A81A, 0x115B2B19, 0x020BD8ED, 0xF0605BEE, 0x24AA3F05, 0xD6C1BC06, 0xC5914FF2, 0x37FACCF1, 0x69E9F0D5, 0x9B8273D6, 0x88D28022, 0x7AB90321, 0xAE7367CA, 0x5C18E4C9, 0x4F48173D, 0xBD23943E, 0xF36E6F75, 0x0105EC76, 0x12551F82, 0xE03E9C81, 0x34F4F86A, 0xC69F7B69, 0xD5CF889D, 0x27A40B9E, 0x79B737BA, 0x8BDCB4B9, 0x988C474D, 0x6AE7C44E, 0xBE2DA0A5, 0x4C4623A6, 0x5F16D052, 0xAD7D5351 }; u_int32_t sctp_crc32c(void *packet, u_int32_t len) { u_int32_t i, crc32c; u_int8_t byte0, byte1, byte2, byte3; u_int8_t *buf = (u_int8_t *)packet; crc32c = ~0; for (i = 0; i < len; i++) CRC32C(crc32c, buf[i]); crc32c = ~crc32c; byte0 = crc32c & 0xff; byte1 = (crc32c>>8) & 0xff; byte2 = (crc32c>>16) & 0xff; byte3 = (crc32c>>24) & 0xff; crc32c = ((byte0 << 24) | (byte1 << 16) | (byte2 << 8) | byte3); return htonl(crc32c); } u_int16_t in_cksum(u_int16_t *addr, int len) { int nleft = len; u_int16_t *w = addr; u_int16_t answer; int sum = 0; /* * Our algorithm is simple, using a 32 bit accumulator (sum), * we add sequential 16 bit words to it, and at the end, fold * back all the carry bits from the top 16 bits into the lower * 16 bits. */ while (nleft > 1) { sum += *w++; nleft -= 2; } /* mop up an odd byte, if necessary */ if (nleft == 1) sum += *(u_char *)w; /* * add back carry outs from top 16 bits to low 16 bits */ sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */ sum += (sum >> 16); /* add carry */ answer = ~sum; /* truncate to 16 bits */ return (answer); } u_int16_t tcp_chksum(struct sockaddr_in6 *src, struct sockaddr_in6 *dst, void *payload, u_int32_t len) { struct { struct in6_addr src; struct in6_addr dst; u_int32_t len; u_int8_t zero[3]; u_int8_t next; } pseudo_hdr; u_int16_t sum[2]; pseudo_hdr.src = src->sin6_addr; pseudo_hdr.dst = dst->sin6_addr; pseudo_hdr.len = htonl(len); pseudo_hdr.zero[0] = 0; pseudo_hdr.zero[1] = 0; pseudo_hdr.zero[2] = 0; pseudo_hdr.next = IPPROTO_TCP; sum[1] = in_cksum((u_int16_t *)&pseudo_hdr, sizeof(pseudo_hdr)); sum[0] = in_cksum(payload, len); return (~in_cksum(sum, sizeof(sum))); } void usage(void) { fprintf(stderr, "usage: traceroute6 [-adIlnNrSTUv] [-A as_server] [-f firsthop] [-g gateway]\n" " [-m hoplimit] [-p port] [-q probes] [-s src] [-w waittime] target\n" " [datalen]\n"); exit(1); } Index: stable/12 =================================================================== --- stable/12 (revision 351940) +++ stable/12 (revision 351941) Property changes on: stable/12 ___________________________________________________________________ Modified: svn:mergeinfo ## -0,0 +0,1 ## Merged /head:r350225