Add ping6.c, unchanged from NetBSD CVS.
cvsweb link:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sbin/ping6/ping6.c?rev=1.73&content-type=text/x-cvsweb-markup&only_with_tag=MAIN
Change-Id: Ie9646ccb41d68f47138f12c686fa40435bdaba8d
diff --git a/ping6.c b/ping6.c
new file mode 100644
index 0000000..1587119
--- /dev/null
+++ b/ping6.c
@@ -0,0 +1,2624 @@
+/* $NetBSD: ping6.c,v 1.73 2010/09/20 11:49:48 ahoka Exp $ */
+/* $KAME: ping6.c,v 1.164 2002/11/16 14:05:37 itojun Exp $ */
+
+/*
+ * 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.
+ */
+
+#if 0
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
+#endif /* not lint */
+#else
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: ping6.c,v 1.73 2010/09/20 11:49:48 ahoka Exp $");
+#endif
+#endif
+
+/*
+ * 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 <sys/param.h>
+#include <sys/uio.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+
+#include <net/if.h>
+#include <net/route.h>
+
+#include <netinet/in.h>
+#include <netinet/ip6.h>
+#include <netinet/icmp6.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <netdb.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <math.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <poll.h>
+
+#ifdef IPSEC
+#include <netinet6/ah.h>
+#include <netinet6/ipsec.h>
+#endif
+
+#include <md5.h>
+
+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)
+/* 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 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
+#ifdef IPV6_REACHCONF
+#define F_REACHCONF 0x8000
+#endif
+#define F_HOSTNAME 0x10000
+#define F_FQDNOLD 0x20000
+#define F_NIGROUP 0x40000
+#define F_SUPTYPES 0x80000
+#define F_NOMINMTU 0x100000
+#define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
+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)
+int mx_dup_ck = MAX_DUP_CHK;
+char rcvd_tbl[MAX_DUP_CHK / 8];
+
+struct addrinfo *res;
+struct sockaddr_in6 dst; /* who to ping6 */
+struct sockaddr_in6 src; /* src addr of this packet */
+socklen_t srclen;
+int datalen = DEFDATALEN;
+int s; /* socket file descriptor */
+u_char outpack[MAXPACKETLEN];
+char BSPACE = '\b'; /* characters written for flood */
+char DOT = '.';
+char *hostname;
+int ident; /* process id to identify our packets */
+u_int8_t nonce[8]; /* nonce field for node information */
+int hoplimit = -1; /* hoplimit */
+int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
+
+/* counters */
+long npackets; /* max packets to transmit */
+long nreceived; /* # of packets we got back */
+long nrepeats; /* number of duplicates */
+long ntransmitted; /* sequence # for outbound packets = #sent */
+struct timeval interval = {1, 0}; /* interval between packets */
+
+/* timing */
+int timing; /* flag to do timing */
+double tmin = 999999999.0; /* minimum round trip time */
+double tmax = 0.0; /* maximum round trip time */
+double tsum = 0.0; /* sum of all times, for doing average */
+double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
+
+/* for node addresses */
+u_short naflags;
+
+/* for ancillary data(advanced API) */
+struct msghdr smsghdr;
+struct iovec smsgiov;
+char *scmsg = 0;
+
+volatile sig_atomic_t seenalrm;
+volatile sig_atomic_t seenint;
+#ifdef SIGINFO
+volatile sig_atomic_t seeninfo;
+#endif
+
+void fill(char *, char *);
+int get_hoplim(struct msghdr *);
+int get_pathmtu(struct msghdr *);
+struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
+void onsignal(int);
+void retransmit(void);
+void onint(int);
+size_t pingerlen(void);
+int pinger(void);
+const char *pr_addr(struct sockaddr *, int);
+void pr_icmph(struct icmp6_hdr *, u_char *);
+void pr_iph(struct ip6_hdr *);
+void pr_suptypes(struct icmp6_nodeinfo *, size_t);
+void pr_nodeaddr(struct icmp6_nodeinfo *, int);
+int myechoreply(const struct icmp6_hdr *);
+int mynireply(const struct icmp6_nodeinfo *);
+char *dnsdecode(const u_char **, const u_char *, const u_char *,
+ char *, size_t);
+void pr_pack(u_char *, int, struct msghdr *);
+void pr_exthdrs(struct msghdr *);
+void pr_ip6opt(void *);
+void pr_rthdr(void *);
+int pr_bitrange(u_int32_t, int, int);
+void pr_retip(struct ip6_hdr *, u_char *);
+void summary(void);
+void tvsub(struct timeval *, struct timeval *);
+int setpolicy(int, char *);
+char *nigroup(char *);
+void usage(void);
+
+int
+main(int argc, char *argv[])
+{
+ struct itimerval itimer;
+ struct sockaddr_in6 from;
+ int timeout;
+ struct addrinfo hints;
+ struct pollfd fdmaskp[1];
+ int cc;
+ u_int i, packlen;
+ int ch, hold, preload, optval, ret_ga;
+ u_char *datap, *packet;
+ char *e, *target, *ifname = NULL, *gateway = NULL;
+ int ip6optlen = 0;
+ struct cmsghdr *scmsgp = NULL;
+#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
+ u_long lsockbufsize;
+ int sockbufsize = 0;
+#endif
+ int usepktinfo = 0;
+ struct in6_pktinfo *pktinfo = NULL;
+ struct ip6_rthdr *rthdr = NULL;
+#ifdef IPSEC_POLICY_IPSEC
+ char *policy_in = NULL;
+ char *policy_out = NULL;
+#endif
+ double intval;
+ 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));
+
+ 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:dfHg:h:I:i:l:mnNp:qRS:s:tvwW" 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 = lsockbufsize;
+ if (errno || !*optarg || *e ||
+ (u_long)sockbufsize != lsockbufsize)
+ 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_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 */
+ intval = strtod(optarg, &e);
+ if (*optarg == '\0' || *e != '\0')
+ errx(1, "illegal timing interval %s", optarg);
+ if (intval < 1 && getuid()) {
+ errx(1, "%s: only root may use interval < 1s",
+ strerror(EPERM));
+ }
+ interval.tv_sec = (long)intval;
+ interval.tv_usec =
+ (long)((intval - interval.tv_sec) * 1000000);
+ if (interval.tv_sec < 0)
+ errx(1, "illegal timing interval %s", optarg);
+ /* less than 1/hz does not make sense */
+ if (interval.tv_sec == 0 && interval.tv_usec < 10000) {
+ warnx("too small interval, raised to 0.01");
+ interval.tv_usec = 10000;
+ }
+ 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;
+ break;
+ case 'p': /* fill buffer with user pattern */
+ options |= F_PINGFILLED;
+ fill((char *)datap, optarg);
+ break;
+ case 'q':
+ options |= F_QUIET;
+ break;
+ case 'R':
+#ifdef IPV6_REACHCONF
+ options |= F_REACHCONF;
+ break;
+#else
+ errx(1, "-R is not supported in this configuration");
+#endif
+ 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;
+
+ ret_ga = getaddrinfo(optarg, NULL, &hints, &res);
+ if (ret_ga) {
+ errx(1, "invalid source address: %s",
+ gai_strerror(ret_ga));
+ }
+ /*
+ * 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;
+#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) {
+ rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
+ argc - 1));
+ if (rthlen == 0) {
+ errx(1, "too many intermediate hops");
+ /*NOTREACHED*/
+ }
+ ip6optlen += rthlen;
+ }
+
+ if (options & F_NIGROUP) {
+ target = nigroup(argv[argc - 1]);
+ 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;
+
+ ret_ga = getaddrinfo(target, NULL, &hints, &res);
+ if (ret_ga)
+ errx(1, "%s", gai_strerror(ret_ga));
+ if (res->ai_canonname)
+ hostname = 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");
+
+ /* set the source address if specified. */
+ if ((options & F_SRCADDR) &&
+ bind(s, (struct sockaddr *)&src, srclen) != 0) {
+ err(1, "bind");
+ }
+
+ /* set the gateway (next hop) if specified */
+ if (gateway) {
+ struct addrinfo ghints, *gres;
+ int error;
+
+ memset(&ghints, 0, sizeof(ghints));
+ ghints.ai_family = AF_INET6;
+ ghints.ai_socktype = SOCK_RAW;
+ ghints.ai_protocol = IPPROTO_ICMPV6;
+
+ error = getaddrinfo(gateway, NULL, &hints, &gres);
+ if (error) {
+ errx(1, "getaddrinfo for the gateway %s: %s",
+ gateway, gai_strerror(error));
+ }
+ if (gres->ai_next && (options & F_VERBOSE))
+ warnx("gateway resolves to multiple addresses");
+
+ if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP,
+ gres->ai_addr, gres->ai_addrlen)) {
+ err(1, "setsockopt(IPV6_NEXTHOP)");
+ }
+
+ freeaddrinfo(gres);
+ }
+
+ /*
+ * 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 */
+ seteuid(getuid());
+ setuid(getuid());
+
+ if ((options & F_FLOOD) && (options & F_INTERVAL))
+ errx(1, "-f and -i incompatible options");
+
+ if ((options & F_NOUSERDATA) == 0) {
+ if (datalen >= (int)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(packlen)))
+ err(1, "Unable to allocate packet");
+ if (!(options & F_PINGFILLED))
+ for (i = ICMP6ECHOLEN; i < packlen; ++i)
+ *datap++ = i;
+
+ ident = arc4random() & 0xFFFF;
+ memset(nonce, 0, sizeof(nonce));
+ for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t))
+ *((u_int32_t *)&nonce[i]) = arc4random();
+
+ 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));
+
+#ifdef IPV6_REACHCONF
+ if (options & F_REACHCONF)
+ ip6optlen += CMSG_SPACE(0);
+#endif
+
+ /* set IP6 packet options */
+ if (ip6optlen) {
+ if ((scmsg = (char *)malloc(ip6optlen)) == 0)
+ 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);
+ }
+#ifdef IPV6_REACHCONF
+ if (options & F_REACHCONF) {
+ scmsgp->cmsg_len = CMSG_LEN(0);
+ scmsgp->cmsg_level = IPPROTO_IPV6;
+ scmsgp->cmsg_type = IPV6_REACHCONF;
+
+ scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
+ }
+#endif
+
+ if (argc > 1) { /* some intermediate addrs are specified */
+ int hops, error;
+ int rthdrlen;
+
+ 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");
+
+ for (hops = 0; hops < argc - 1; hops++) {
+ struct addrinfo *iaip;
+
+ if ((error = getaddrinfo(argv[hops], NULL, &hints,
+ &iaip)))
+ errx(1, "%s", gai_strerror(error));
+ if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6)
+ errx(1,
+ "bad addr family of an intermediate addr");
+
+ if (inet6_rth_add(rthdr,
+ &(SIN6(iaip->ai_addr))->sin6_addr))
+ errx(1, "can't add an intermediate node");
+ freeaddrinfo(iaip);
+ }
+
+ 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;
+
+ 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)");
+
+ 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 > 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)));
+
+ while (preload--) /* Fire off them quickies. */
+ (void)pinger();
+
+ (void)signal(SIGINT, onsignal);
+#ifdef SIGINFO
+ (void)signal(SIGINFO, onsignal);
+#endif
+
+ if ((options & F_FLOOD) == 0) {
+ (void)signal(SIGALRM, onsignal);
+ itimer.it_interval = interval;
+ itimer.it_value = interval;
+ (void)setitimer(ITIMER_REAL, &itimer, NULL);
+ if (ntransmitted == 0)
+ retransmit();
+ }
+
+ seenalrm = seenint = 0;
+#ifdef SIGINFO
+ seeninfo = 0;
+#endif
+
+ for (;;) {
+ struct msghdr m;
+ struct cmsghdr *cm;
+ u_char buf[1024];
+ struct iovec iov[2];
+
+ /* signal handling */
+ if (seenalrm) {
+ retransmit();
+ seenalrm = 0;
+ continue;
+ }
+ if (seenint) {
+ onint(SIGINT);
+ seenint = 0;
+ continue;
+ }
+#ifdef SIGINFO
+ if (seeninfo) {
+ summary();
+ seeninfo = 0;
+ continue;
+ }
+#endif
+
+ if (options & F_FLOOD) {
+ (void)pinger();
+ timeout = 10;
+ } else {
+ timeout = INFTIM;
+ }
+ fdmaskp[0].fd = s;
+ fdmaskp[0].events = POLLIN;
+ cc = poll(fdmaskp, 1, timeout);
+ if (cc < 0) {
+ if (errno != EINTR) {
+ warn("poll");
+ sleep(1);
+ }
+ continue;
+ } else if (cc == 0)
+ continue;
+
+ 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;
+ cm = (struct cmsghdr *)buf;
+ m.msg_control = (caddr_t)buf;
+ m.msg_controllen = sizeof(buf);
+
+ 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 possiblity 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 (npackets && nreceived >= npackets)
+ break;
+ }
+ summary();
+ exit(nreceived == 0);
+}
+
+void
+onsignal(int sig)
+{
+
+ switch (sig) {
+ case SIGALRM:
+ seenalrm++;
+ break;
+ case SIGINT:
+ seenint++;
+ break;
+#ifdef SIGINFO
+ case SIGINFO:
+ seeninfo++;
+ break;
+#endif
+ }
+}
+
+/*
+ * retransmit --
+ * This routine transmits another ping6.
+ */
+void
+retransmit(void)
+{
+ struct itimerval itimer;
+
+ if (pinger() == 0)
+ return;
+
+ /*
+ * If we're not transmitting any more packets, change the timer
+ * to wait two round-trip times if we've received any packets or
+ * ten seconds if we haven't.
+ */
+#define MAXWAIT 10
+ if (nreceived) {
+ itimer.it_value.tv_sec = 2 * tmax / 1000;
+ if (itimer.it_value.tv_sec == 0)
+ itimer.it_value.tv_sec = 1;
+ } else
+ itimer.it_value.tv_sec = MAXWAIT;
+ itimer.it_interval.tv_sec = 0;
+ itimer.it_interval.tv_usec = 0;
+ itimer.it_value.tv_usec = 0;
+
+ (void)signal(SIGALRM, onint);
+ (void)setitimer(ITIMER_REAL, &itimer, NULL);
+}
+
+/*
+ * 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.
+ */
+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;
+}
+
+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);
+}
+
+int
+myechoreply(const struct icmp6_hdr *icp)
+{
+ if (ntohs(icp->icmp6_id) == ident)
+ return 1;
+ else
+ return 0;
+}
+
+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;
+}
+
+char *
+dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf,
+ size_t bufsiz)
+{
+ int i;
+ const u_char *cp;
+ char cresult[MAXDNAME + 1];
+ const u_char *comp;
+ int l;
+
+ i = 0; /* XXXGCC -Wuninitialized [sun2] */
+
+ 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 (l >= (int)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!).
+ */
+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;
+ }
+ 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_FLOOD)
+ (void)write(STDOUT_FILENO, &BSPACE, 1);
+ else {
+ (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;
+#ifdef SIN6_LEN
+ dstsa.sin6_len = sizeof(dstsa);
+#endif
+ 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
+}
+
+void
+pr_exthdrs(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)
+ continue;
+
+ switch (cm->cmsg_type) {
+ case IPV6_HOPOPTS:
+ printf(" HbH Options: ");
+ pr_ip6opt(CMSG_DATA(cm));
+ break;
+ case IPV6_DSTOPTS:
+#ifdef IPV6_RTHDRDSTOPTS
+ case IPV6_RTHDRDSTOPTS:
+#endif
+ printf(" Dst Options: ");
+ pr_ip6opt(CMSG_DATA(cm));
+ break;
+ case IPV6_RTHDR:
+ printf(" Routing: ");
+ pr_rthdr(CMSG_DATA(cm));
+ break;
+ }
+ }
+}
+
+void
+pr_ip6opt(void *extbuf)
+{
+ struct ip6_hbh *ext;
+ int currentlen;
+ u_int8_t type;
+ size_t extlen;
+ socklen_t 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);
+
+ 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;
+}
+
+void
+pr_rthdr(void *extbuf)
+{
+ struct in6_addr *in6;
+ char ntopbuf[INET6_ADDRSTRLEN];
+ struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
+ int i, segments;
+
+ /* 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);
+ else
+ printf("segments unknown, ");
+ printf("%d left\n", rh->ip6r_segleft);
+
+ for (i = 0; i < segments; i++) {
+ in6 = inet6_rth_getaddr(extbuf, i);
+ if (in6 == NULL)
+ printf(" [%d]<NULL>\n", i);
+ else {
+ if (!inet_ntop(AF_INET6, in6, ntopbuf,
+ sizeof(ntopbuf)))
+ strlcpy(ntopbuf, "?", sizeof(ntopbuf));
+ printf(" [%d]%s\n", i, ntopbuf);
+ }
+ }
+
+ return;
+
+}
+
+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;
+}
+
+void
+pr_suptypes(struct icmp6_nodeinfo *ni /* ni->qtype must be SUPTYPES */,
+ size_t nilen)
+{
+ 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;
+ }
+}
+
+void
+pr_nodeaddr(struct icmp6_nodeinfo *ni, /* ni->qtype must be NODEADDR */
+ int nilen)
+{
+ 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 = 0;
+
+ 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);
+ }
+}
+
+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);
+}
+
+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);
+}
+
+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.
+ */
+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 */
+void
+onint(int notused)
+{
+ summary();
+
+ (void)signal(SIGINT, SIG_DFL);
+ (void)kill(getpid(), SIGINT);
+
+ /* NOTREACHED */
+ exit(1);
+}
+
+/*
+ * summary --
+ * Print out statistics.
+ */
+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));
+ }
+ (void)putchar('\n');
+ if (nreceived && timing) {
+ /* Only display average to microseconds */
+ double num = nreceived + nrepeats;
+ double dev, avg;
+ if (num > 1) {
+ avg = tsum / num;
+ dev = sqrt((tsumsq - num * avg * avg) / (num - 1));
+ } else {
+ avg = tsum;
+ dev = 0.0;
+ }
+ (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.
+ */
+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 >= sizeof(nircode) / sizeof(nircode[0]))
+ 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.
+ */
+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.
+ */
+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.
+ */
+void
+pr_retip(struct ip6_hdr *ip6, u_char *end)
+{
+ u_char *cp = (u_char *)ip6, nh;
+ int hlen;
+
+ if (end - (u_char *)ip6 < (intptr_t)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;
+}
+
+void
+fill(char *bp, char *patp)
+{
+ int ii, jj, kk;
+ int pat[16];
+ char *cp;
+
+ for (cp = patp; *cp; cp++)
+ if (!isxdigit((unsigned char)*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;
+ kk <= (int)(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
+int
+setpolicy(int so, 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
+
+char *
+nigroup(char *name)
+{
+ 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;
+
+ 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 8 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 (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1)
+ return NULL; /*XXX*/
+ bcopy(digest, &in6.s6_addr[12], 4);
+
+ if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
+ return NULL;
+
+ return strdup(hbuf);
+}
+
+void
+usage(void)
+{
+ (void)fprintf(stderr,
+ "usage: ping6 [-dfH"
+#ifdef IPV6_USE_MIN_MTU
+ "m"
+#endif
+ "nNqtvwW"
+#ifdef IPV6_REACHCONF
+ "R"
+#endif
+#ifdef IPSEC
+#ifdef IPSEC_POLICY_IPSEC
+ "] [-P policy"
+#else
+ "AE"
+#endif
+#endif
+ "] [-a [aAclsg]] [-b sockbufsiz] [-c count] \n"
+ "\t[-I interface] [-i wait] [-l preload] [-p pattern] "
+ "[-S sourceaddr]\n"
+ "\t[-s packetsize] [-h hoplimit] [-g gateway] [hops...] host\n");
+ exit(1);
+}
