2781 lines
70 KiB
C
2781 lines
70 KiB
C
/* $KAME: ping6.c,v 1.169 2003/07/25 06:01:47 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Mike Muuss.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1989, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
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* measure round-trip-delays and packet loss across network paths.
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*
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* Author -
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* Mike Muuss
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* U. S. Army Ballistic Research Laboratory
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* December, 1983
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*
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* Status -
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* Public Domain. Distribution Unlimited.
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* Bugs -
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* More statistics could always be gathered.
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* This program has to run SUID to ROOT to access the ICMP socket.
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*/
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/*
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* NOTE:
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* USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
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* as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link*
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* while IPV6_PKTINFO specifies *interface*. Link is defined as collection of
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* network attached to 1 or more interfaces)
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*/
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#include <sys/param.h>
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#include <sys/uio.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/ip6.h>
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#include <netinet/icmp6.h>
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#include <arpa/inet.h>
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#include <arpa/nameser.h>
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#include <netdb.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <math.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#ifdef IPSEC
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#include <netipsec/ah.h>
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#include <netipsec/ipsec.h>
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#endif
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#include <md5.h>
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struct tv32 {
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u_int32_t tv32_sec;
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u_int32_t tv32_usec;
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};
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#define MAXPACKETLEN 131072
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#define IP6LEN 40
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#define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
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#define ICMP6ECHOTMLEN sizeof(struct tv32)
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#define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
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# define CONTROLLEN 10240 /* ancillary data buffer size RFC3542 20.1 */
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/* FQDN case, 64 bits of nonce + 32 bits ttl */
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#define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
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#define EXTRA 256 /* for AH and various other headers. weird. */
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#define DEFDATALEN ICMP6ECHOTMLEN
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#define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
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#define NROUTES 9 /* number of record route slots */
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#define MAXWAIT 10000 /* max ms to wait for response */
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#define MAXALARM (60 * 60) /* max seconds for alarm timeout */
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#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
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#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
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#define SET(bit) (A(bit) |= B(bit))
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#define CLR(bit) (A(bit) &= (~B(bit)))
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#define TST(bit) (A(bit) & B(bit))
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#define F_FLOOD 0x0001
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#define F_INTERVAL 0x0002
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#define F_PINGFILLED 0x0008
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#define F_QUIET 0x0010
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#define F_RROUTE 0x0020
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#define F_SO_DEBUG 0x0040
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#define F_VERBOSE 0x0100
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#ifdef IPSEC
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#ifdef IPSEC_POLICY_IPSEC
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#define F_POLICY 0x0400
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#else
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#define F_AUTHHDR 0x0200
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#define F_ENCRYPT 0x0400
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#endif /*IPSEC_POLICY_IPSEC*/
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#endif /*IPSEC*/
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#define F_NODEADDR 0x0800
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#define F_FQDN 0x1000
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#define F_INTERFACE 0x2000
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#define F_SRCADDR 0x4000
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#define F_HOSTNAME 0x10000
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#define F_FQDNOLD 0x20000
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#define F_NIGROUP 0x40000
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#define F_SUPTYPES 0x80000
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#define F_NOMINMTU 0x100000
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#define F_ONCE 0x200000
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#define F_AUDIBLE 0x400000
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#define F_MISSED 0x800000
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#define F_DONTFRAG 0x1000000
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#define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
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#define F_WAITTIME 0x2000000
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u_int options;
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#define IN6LEN sizeof(struct in6_addr)
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#define SA6LEN sizeof(struct sockaddr_in6)
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#define DUMMY_PORT 10101
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#define SIN6(s) ((struct sockaddr_in6 *)(s))
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/*
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* MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
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* number of received sequence numbers we can keep track of. Change 128
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* to 8192 for complete accuracy...
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*/
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#define MAX_DUP_CHK (8 * 8192)
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static int mx_dup_ck = MAX_DUP_CHK;
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static char rcvd_tbl[MAX_DUP_CHK / 8];
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static struct sockaddr_in6 dst; /* who to ping6 */
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static struct sockaddr_in6 src; /* src addr of this packet */
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static socklen_t srclen;
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static size_t datalen = DEFDATALEN;
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static int s; /* socket file descriptor */
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static u_char outpack[MAXPACKETLEN];
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static char BSPACE = '\b'; /* characters written for flood */
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static char BBELL = '\a'; /* characters written for AUDIBLE */
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static char DOT = '.';
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static char *hostname;
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static int ident; /* process id to identify our packets */
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static u_int8_t nonce[8]; /* nonce field for node information */
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static int hoplimit = -1; /* hoplimit */
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static u_char *packet = NULL;
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/* counters */
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static long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
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static long npackets; /* max packets to transmit */
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static long nreceived; /* # of packets we got back */
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static long nrepeats; /* number of duplicates */
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static long ntransmitted; /* sequence # for outbound packets = #sent */
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static int interval = 1000; /* interval between packets in ms */
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static int waittime = MAXWAIT; /* timeout for each packet */
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static long nrcvtimeout = 0; /* # of packets we got back after waittime */
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/* timing */
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static int timing; /* flag to do timing */
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static double tmin = 999999999.0; /* minimum round trip time */
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static double tmax = 0.0; /* maximum round trip time */
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static double tsum = 0.0; /* sum of all times, for doing average */
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static double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
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/* for node addresses */
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static u_short naflags;
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/* for ancillary data(advanced API) */
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static struct msghdr smsghdr;
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static struct iovec smsgiov;
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static char *scmsg = 0;
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static volatile sig_atomic_t seenint;
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#ifdef SIGINFO
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static volatile sig_atomic_t seeninfo;
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#endif
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int main(int, char *[]);
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static void fill(char *, char *);
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static int get_hoplim(struct msghdr *);
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static int get_pathmtu(struct msghdr *);
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static struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
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static void onsignal(int);
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static void onint(int);
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static size_t pingerlen(void);
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static int pinger(void);
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static const char *pr_addr(struct sockaddr *, int);
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static void pr_icmph(struct icmp6_hdr *, u_char *);
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static void pr_iph(struct ip6_hdr *);
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static void pr_suptypes(struct icmp6_nodeinfo *, size_t);
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static void pr_nodeaddr(struct icmp6_nodeinfo *, int);
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static int myechoreply(const struct icmp6_hdr *);
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static int mynireply(const struct icmp6_nodeinfo *);
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static char *dnsdecode(const u_char **, const u_char *, const u_char *,
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char *, size_t);
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static void pr_pack(u_char *, int, struct msghdr *);
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static void pr_exthdrs(struct msghdr *);
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static void pr_ip6opt(void *, size_t);
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static void pr_rthdr(void *, size_t);
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static int pr_bitrange(u_int32_t, int, int);
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static void pr_retip(struct ip6_hdr *, u_char *);
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static void summary(void);
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static void tvsub(struct timeval *, struct timeval *);
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static int setpolicy(int, char *);
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static char *nigroup(char *, int);
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static void usage(void);
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int
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main(int argc, char *argv[])
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{
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struct timeval last, intvl;
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struct sockaddr_in6 from, *sin6;
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struct addrinfo hints, *res;
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struct sigaction si_sa;
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int cc, i;
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int almost_done, ch, hold, packlen, preload, optval, error;
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int nig_oldmcprefix = -1;
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u_char *datap;
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char *e, *target, *ifname = NULL, *gateway = NULL;
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int ip6optlen = 0;
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struct cmsghdr *scmsgp = NULL;
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/* For control (ancillary) data received from recvmsg() */
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struct cmsghdr cm[CONTROLLEN];
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#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
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u_long lsockbufsize;
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int sockbufsize = 0;
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#endif
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int usepktinfo = 0;
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struct in6_pktinfo *pktinfo = NULL;
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#ifdef USE_RFC2292BIS
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struct ip6_rthdr *rthdr = NULL;
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#endif
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#ifdef IPSEC_POLICY_IPSEC
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char *policy_in = NULL;
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char *policy_out = NULL;
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#endif
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double t;
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u_long alarmtimeout;
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size_t rthlen;
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#ifdef IPV6_USE_MIN_MTU
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int mflag = 0;
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#endif
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/* just to be sure */
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memset(&smsghdr, 0, sizeof(smsghdr));
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memset(&smsgiov, 0, sizeof(smsgiov));
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alarmtimeout = preload = 0;
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datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
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#ifndef IPSEC
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#define ADDOPTS
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#else
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#ifdef IPSEC_POLICY_IPSEC
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#define ADDOPTS "P:"
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#else
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#define ADDOPTS "AE"
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#endif /*IPSEC_POLICY_IPSEC*/
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#endif
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while ((ch = getopt(argc, argv,
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"a:b:c:DdfHg:h:I:i:l:mnNop:qrRS:s:tvwWx:X:" ADDOPTS)) != -1) {
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#undef ADDOPTS
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switch (ch) {
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case 'a':
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{
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char *cp;
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options &= ~F_NOUSERDATA;
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options |= F_NODEADDR;
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for (cp = optarg; *cp != '\0'; cp++) {
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switch (*cp) {
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case 'a':
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naflags |= NI_NODEADDR_FLAG_ALL;
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break;
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case 'c':
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case 'C':
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naflags |= NI_NODEADDR_FLAG_COMPAT;
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break;
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case 'l':
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case 'L':
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naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
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break;
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case 's':
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case 'S':
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naflags |= NI_NODEADDR_FLAG_SITELOCAL;
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break;
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case 'g':
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case 'G':
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naflags |= NI_NODEADDR_FLAG_GLOBAL;
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break;
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case 'A': /* experimental. not in the spec */
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#ifdef NI_NODEADDR_FLAG_ANYCAST
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naflags |= NI_NODEADDR_FLAG_ANYCAST;
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break;
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#else
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errx(1,
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"-a A is not supported on the platform");
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/*NOTREACHED*/
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#endif
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default:
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usage();
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/*NOTREACHED*/
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}
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}
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break;
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}
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case 'b':
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#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
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errno = 0;
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e = NULL;
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lsockbufsize = strtoul(optarg, &e, 10);
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sockbufsize = (int)lsockbufsize;
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if (errno || !*optarg || *e ||
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lsockbufsize > INT_MAX)
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errx(1, "invalid socket buffer size");
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#else
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errx(1,
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"-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
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#endif
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break;
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case 'c':
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npackets = strtol(optarg, &e, 10);
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if (npackets <= 0 || *optarg == '\0' || *e != '\0')
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errx(1,
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"illegal number of packets -- %s", optarg);
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break;
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case 'D':
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options |= F_DONTFRAG;
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break;
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case 'd':
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options |= F_SO_DEBUG;
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break;
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case 'f':
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if (getuid()) {
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errno = EPERM;
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errx(1, "Must be superuser to flood ping");
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}
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options |= F_FLOOD;
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setbuf(stdout, (char *)NULL);
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break;
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case 'g':
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gateway = optarg;
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break;
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case 'H':
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options |= F_HOSTNAME;
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break;
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case 'h': /* hoplimit */
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hoplimit = strtol(optarg, &e, 10);
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if (*optarg == '\0' || *e != '\0')
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errx(1, "illegal hoplimit %s", optarg);
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if (255 < hoplimit || hoplimit < -1)
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errx(1,
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"illegal hoplimit -- %s", optarg);
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break;
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case 'I':
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ifname = optarg;
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options |= F_INTERFACE;
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#ifndef USE_SIN6_SCOPE_ID
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usepktinfo++;
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#endif
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break;
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case 'i': /* wait between sending packets */
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t = strtod(optarg, &e);
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if (*optarg == '\0' || *e != '\0')
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errx(1, "illegal timing interval %s", optarg);
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if (t < 1 && getuid()) {
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errx(1, "%s: only root may use interval < 1s",
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strerror(EPERM));
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}
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intvl.tv_sec = (long)t;
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intvl.tv_usec =
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(long)((t - intvl.tv_sec) * 1000000);
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if (intvl.tv_sec < 0)
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errx(1, "illegal timing interval %s", optarg);
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/* less than 1/hz does not make sense */
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if (intvl.tv_sec == 0 && intvl.tv_usec < 1) {
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warnx("too small interval, raised to .000001");
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intvl.tv_usec = 1;
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}
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options |= F_INTERVAL;
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break;
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case 'l':
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if (getuid()) {
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errno = EPERM;
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errx(1, "Must be superuser to preload");
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}
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preload = strtol(optarg, &e, 10);
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if (preload < 0 || *optarg == '\0' || *e != '\0')
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errx(1, "illegal preload value -- %s", optarg);
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break;
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case 'm':
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#ifdef IPV6_USE_MIN_MTU
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mflag++;
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break;
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#else
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errx(1, "-%c is not supported on this platform", ch);
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/*NOTREACHED*/
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#endif
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case 'n':
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options &= ~F_HOSTNAME;
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break;
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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);
|
|
res = NULL;
|
|
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 = 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) != 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)) == 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);
|
|
}
|
|
|
|
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)) == 0)
|
|
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 (res != NULL)
|
|
freeaddrinfo(res);
|
|
|
|
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]<NULL>\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 > 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.
|
|
*/
|
|
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);
|
|
}
|