462216939a
this, and OpenBSD and NetBSD pings do it too. This is primarily useful for comparing low levels of packet loss.
1720 lines
44 KiB
C
1720 lines
44 KiB
C
/*
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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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#if 0
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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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static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* P I N G . C
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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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#include <sys/param.h> /* NB: we rely on this for <sys/types.h> */
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <sys/uio.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/ip_var.h>
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#include <arpa/inet.h>
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#ifdef IPSEC
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#include <netinet6/ipsec.h>
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#endif /*IPSEC*/
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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 <math.h>
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#include <netdb.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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#define INADDR_LEN ((int)sizeof(in_addr_t))
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#define TIMEVAL_LEN ((int)sizeof(struct tv32))
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#define MASK_LEN (ICMP_MASKLEN - ICMP_MINLEN)
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#define TS_LEN (ICMP_TSLEN - ICMP_MINLEN)
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#define DEFDATALEN 56 /* default data length */
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#define FLOOD_BACKOFF 20000 /* usecs to back off if F_FLOOD mode */
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/* runs out of buffer space */
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#define MAXIPLEN (sizeof(struct ip) + MAX_IPOPTLEN)
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#define MAXICMPLEN (ICMP_ADVLENMIN + MAX_IPOPTLEN)
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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 MAXTOS 255
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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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struct tv32 {
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int32_t tv32_sec;
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int32_t tv32_usec;
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};
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/* various options */
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int options;
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#define F_FLOOD 0x0001
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#define F_INTERVAL 0x0002
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#define F_NUMERIC 0x0004
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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_SO_DONTROUTE 0x0080
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#define F_VERBOSE 0x0100
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#define F_QUIET2 0x0200
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#define F_NOLOOP 0x0400
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#define F_MTTL 0x0800
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#define F_MIF 0x1000
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#define F_AUDIBLE 0x2000
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#ifdef IPSEC
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#ifdef IPSEC_POLICY_IPSEC
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#define F_POLICY 0x4000
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#endif /*IPSEC_POLICY_IPSEC*/
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#endif /*IPSEC*/
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#define F_TTL 0x8000
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#define F_MISSED 0x10000
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#define F_ONCE 0x20000
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#define F_HDRINCL 0x40000
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#define F_MASK 0x80000
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#define F_TIME 0x100000
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#define F_SWEEP 0x200000
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#define F_WAITTIME 0x400000
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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 * 128)
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int mx_dup_ck = MAX_DUP_CHK;
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char rcvd_tbl[MAX_DUP_CHK / 8];
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struct sockaddr_in whereto; /* who to ping */
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int datalen = DEFDATALEN;
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int maxpayload;
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int s; /* socket file descriptor */
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u_char outpackhdr[IP_MAXPACKET], *outpack;
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char BBELL = '\a'; /* characters written for MISSED and AUDIBLE */
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char BSPACE = '\b'; /* characters written for flood */
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char DOT = '.';
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char *hostname;
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char *shostname;
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int ident; /* process id to identify our packets */
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int uid; /* cached uid for micro-optimization */
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u_char icmp_type = ICMP_ECHO;
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u_char icmp_type_rsp = ICMP_ECHOREPLY;
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int phdr_len = 0;
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int send_len;
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/* counters */
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long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
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long npackets; /* max packets to transmit */
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long nreceived; /* # of packets we got back */
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long nrepeats; /* number of duplicates */
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long ntransmitted; /* sequence # for outbound packets = #sent */
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long snpackets; /* max packets to transmit in one sweep */
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long snreceived; /* # of packets we got back in this sweep */
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long sntransmitted; /* # of packets we sent in this sweep */
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int sweepmax; /* max value of payload in sweep */
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int sweepmin = 0; /* start value of payload in sweep */
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int sweepincr = 1; /* payload increment in sweep */
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int interval = 1000; /* interval between packets, ms */
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int waittime = MAXWAIT; /* timeout for each packet */
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long nrcvtimeout = 0; /* # of packets we got back after waittime */
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/* timing */
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int timing; /* flag to do timing */
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double tmin = 999999999.0; /* minimum round trip time */
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double tmax = 0.0; /* maximum round trip time */
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double tsum = 0.0; /* sum of all times, for doing average */
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double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
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volatile sig_atomic_t finish_up; /* nonzero if we've been told to finish up */
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volatile sig_atomic_t siginfo_p;
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static void fill(char *, char *);
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static u_short in_cksum(u_short *, int);
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static void check_status(void);
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static void finish(void) __dead2;
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static void pinger(void);
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static char *pr_addr(struct in_addr);
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static char *pr_ntime(n_time);
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static void pr_icmph(struct icmp *);
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static void pr_iph(struct ip *);
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static void pr_pack(char *, int, struct sockaddr_in *, struct timeval *);
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static void pr_retip(struct ip *);
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static void status(int);
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static void stopit(int);
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static void tvsub(struct timeval *, struct timeval *);
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static void usage(void) __dead2;
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int
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main(argc, argv)
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int argc;
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char *const *argv;
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{
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struct sockaddr_in from, sock_in;
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struct in_addr ifaddr;
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struct timeval last, intvl;
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struct iovec iov;
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struct ip *ip;
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struct msghdr msg;
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struct sigaction si_sa;
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size_t sz;
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u_char *datap, packet[IP_MAXPACKET];
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char *ep, *source, *target, *payload;
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struct hostent *hp;
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#ifdef IPSEC_POLICY_IPSEC
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char *policy_in, *policy_out;
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#endif
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struct sockaddr_in *to;
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double t;
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u_long alarmtimeout, ultmp;
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int almost_done, ch, df, hold, i, icmp_len, mib[4], preload, sockerrno,
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tos, ttl;
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char ctrl[CMSG_SPACE(sizeof(struct timeval))];
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char hnamebuf[MAXHOSTNAMELEN], snamebuf[MAXHOSTNAMELEN];
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#ifdef IP_OPTIONS
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char rspace[MAX_IPOPTLEN]; /* record route space */
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#endif
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unsigned char loop, mttl;
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payload = source = NULL;
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#ifdef IPSEC_POLICY_IPSEC
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policy_in = policy_out = NULL;
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#endif
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/*
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* Do the stuff that we need root priv's for *first*, and
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* then drop our setuid bit. Save error reporting for
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* after arg parsing.
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*/
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s = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
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sockerrno = errno;
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setuid(getuid());
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uid = getuid();
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alarmtimeout = df = preload = tos = 0;
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outpack = outpackhdr + sizeof(struct ip);
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while ((ch = getopt(argc, argv,
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"Aac:DdfG:g:h:I:i:Ll:M:m:nop:QqRrS:s:T:t:vW:z:"
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#ifdef IPSEC
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#ifdef IPSEC_POLICY_IPSEC
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"P:"
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#endif /*IPSEC_POLICY_IPSEC*/
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#endif /*IPSEC*/
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)) != -1)
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{
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switch(ch) {
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case 'A':
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options |= F_MISSED;
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break;
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case 'a':
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options |= F_AUDIBLE;
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break;
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case 'c':
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ultmp = strtoul(optarg, &ep, 0);
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if (*ep || ep == optarg || ultmp > LONG_MAX || !ultmp)
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errx(EX_USAGE,
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"invalid count of packets to transmit: `%s'",
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optarg);
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npackets = ultmp;
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break;
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case 'D':
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options |= F_HDRINCL;
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df = 1;
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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 (uid) {
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errno = EPERM;
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err(EX_NOPERM, "-f flag");
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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': /* Maximum packet size for ping sweep */
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ultmp = strtoul(optarg, &ep, 0);
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if (*ep || ep == optarg)
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errx(EX_USAGE, "invalid packet size: `%s'",
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optarg);
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if (uid != 0 && ultmp > DEFDATALEN) {
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errno = EPERM;
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err(EX_NOPERM,
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"packet size too large: %lu > %u",
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ultmp, DEFDATALEN);
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}
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options |= F_SWEEP;
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sweepmax = ultmp;
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break;
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case 'g': /* Minimum packet size for ping sweep */
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ultmp = strtoul(optarg, &ep, 0);
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if (*ep || ep == optarg)
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errx(EX_USAGE, "invalid packet size: `%s'",
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optarg);
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if (uid != 0 && ultmp > DEFDATALEN) {
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errno = EPERM;
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err(EX_NOPERM,
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"packet size too large: %lu > %u",
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ultmp, DEFDATALEN);
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}
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options |= F_SWEEP;
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sweepmin = ultmp;
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break;
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case 'h': /* Packet size increment for ping sweep */
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ultmp = strtoul(optarg, &ep, 0);
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if (*ep || ep == optarg || ultmp < 1)
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errx(EX_USAGE, "invalid increment size: `%s'",
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optarg);
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if (uid != 0 && ultmp > DEFDATALEN) {
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errno = EPERM;
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err(EX_NOPERM,
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"packet size too large: %lu > %u",
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ultmp, DEFDATALEN);
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}
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options |= F_SWEEP;
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sweepincr = ultmp;
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break;
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case 'I': /* multicast interface */
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if (inet_aton(optarg, &ifaddr) == 0)
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errx(EX_USAGE,
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"invalid multicast interface: `%s'",
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optarg);
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options |= F_MIF;
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break;
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case 'i': /* wait between sending packets */
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t = strtod(optarg, &ep) * 1000.0;
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if (*ep || ep == optarg || t > (double)INT_MAX)
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errx(EX_USAGE, "invalid timing interval: `%s'",
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optarg);
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options |= F_INTERVAL;
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interval = (int)t;
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if (uid && interval < 1000) {
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errno = EPERM;
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err(EX_NOPERM, "-i interval too short");
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}
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break;
|
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case 'L':
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options |= F_NOLOOP;
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loop = 0;
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break;
|
|
case 'l':
|
|
ultmp = strtoul(optarg, &ep, 0);
|
|
if (*ep || ep == optarg || ultmp > INT_MAX)
|
|
errx(EX_USAGE,
|
|
"invalid preload value: `%s'", optarg);
|
|
if (uid) {
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|
errno = EPERM;
|
|
err(EX_NOPERM, "-l flag");
|
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}
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preload = ultmp;
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break;
|
|
case 'M':
|
|
switch(optarg[0]) {
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|
case 'M':
|
|
case 'm':
|
|
options |= F_MASK;
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break;
|
|
case 'T':
|
|
case 't':
|
|
options |= F_TIME;
|
|
break;
|
|
default:
|
|
errx(EX_USAGE, "invalid message: `%c'", optarg[0]);
|
|
break;
|
|
}
|
|
break;
|
|
case 'm': /* TTL */
|
|
ultmp = strtoul(optarg, &ep, 0);
|
|
if (*ep || ep == optarg || ultmp > MAXTTL)
|
|
errx(EX_USAGE, "invalid TTL: `%s'", optarg);
|
|
ttl = ultmp;
|
|
options |= F_TTL;
|
|
break;
|
|
case 'n':
|
|
options |= F_NUMERIC;
|
|
break;
|
|
case 'o':
|
|
options |= F_ONCE;
|
|
break;
|
|
#ifdef IPSEC
|
|
#ifdef IPSEC_POLICY_IPSEC
|
|
case 'P':
|
|
options |= F_POLICY;
|
|
if (!strncmp("in", optarg, 2))
|
|
policy_in = strdup(optarg);
|
|
else if (!strncmp("out", optarg, 3))
|
|
policy_out = strdup(optarg);
|
|
else
|
|
errx(1, "invalid security policy");
|
|
break;
|
|
#endif /*IPSEC_POLICY_IPSEC*/
|
|
#endif /*IPSEC*/
|
|
case 'p': /* fill buffer with user pattern */
|
|
options |= F_PINGFILLED;
|
|
payload = optarg;
|
|
break;
|
|
case 'Q':
|
|
options |= F_QUIET2;
|
|
break;
|
|
case 'q':
|
|
options |= F_QUIET;
|
|
break;
|
|
case 'R':
|
|
options |= F_RROUTE;
|
|
break;
|
|
case 'r':
|
|
options |= F_SO_DONTROUTE;
|
|
break;
|
|
case 'S':
|
|
source = optarg;
|
|
break;
|
|
case 's': /* size of packet to send */
|
|
ultmp = strtoul(optarg, &ep, 0);
|
|
if (*ep || ep == optarg)
|
|
errx(EX_USAGE, "invalid packet size: `%s'",
|
|
optarg);
|
|
if (uid != 0 && ultmp > DEFDATALEN) {
|
|
errno = EPERM;
|
|
err(EX_NOPERM,
|
|
"packet size too large: %lu > %u",
|
|
ultmp, DEFDATALEN);
|
|
}
|
|
datalen = ultmp;
|
|
break;
|
|
case 'T': /* multicast TTL */
|
|
ultmp = strtoul(optarg, &ep, 0);
|
|
if (*ep || ep == optarg || ultmp > MAXTTL)
|
|
errx(EX_USAGE, "invalid multicast TTL: `%s'",
|
|
optarg);
|
|
mttl = ultmp;
|
|
options |= F_MTTL;
|
|
break;
|
|
case 't':
|
|
alarmtimeout = strtoul(optarg, &ep, 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;
|
|
case 'v':
|
|
options |= F_VERBOSE;
|
|
break;
|
|
case 'W': /* wait ms for answer */
|
|
t = strtod(optarg, &ep);
|
|
if (*ep || ep == optarg || t > (double)INT_MAX)
|
|
errx(EX_USAGE, "invalid timing interval: `%s'",
|
|
optarg);
|
|
options |= F_WAITTIME;
|
|
waittime = (int)t;
|
|
break;
|
|
case 'z':
|
|
options |= F_HDRINCL;
|
|
ultmp = strtoul(optarg, &ep, 0);
|
|
if (*ep || ep == optarg || ultmp > MAXTOS)
|
|
errx(EX_USAGE, "invalid TOS: `%s'", optarg);
|
|
tos = ultmp;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
|
|
if (argc - optind != 1)
|
|
usage();
|
|
target = argv[optind];
|
|
|
|
switch (options & (F_MASK|F_TIME)) {
|
|
case 0: break;
|
|
case F_MASK:
|
|
icmp_type = ICMP_MASKREQ;
|
|
icmp_type_rsp = ICMP_MASKREPLY;
|
|
phdr_len = MASK_LEN;
|
|
if (!(options & F_QUIET))
|
|
(void)printf("ICMP_MASKREQ\n");
|
|
break;
|
|
case F_TIME:
|
|
icmp_type = ICMP_TSTAMP;
|
|
icmp_type_rsp = ICMP_TSTAMPREPLY;
|
|
phdr_len = TS_LEN;
|
|
if (!(options & F_QUIET))
|
|
(void)printf("ICMP_TSTAMP\n");
|
|
break;
|
|
default:
|
|
errx(EX_USAGE, "ICMP_TSTAMP and ICMP_MASKREQ are exclusive.");
|
|
break;
|
|
}
|
|
icmp_len = sizeof(struct ip) + ICMP_MINLEN + phdr_len;
|
|
if (options & F_RROUTE)
|
|
icmp_len += MAX_IPOPTLEN;
|
|
maxpayload = IP_MAXPACKET - icmp_len;
|
|
if (datalen > maxpayload)
|
|
errx(EX_USAGE, "packet size too large: %d > %d", datalen,
|
|
maxpayload);
|
|
send_len = icmp_len + datalen;
|
|
datap = &outpack[ICMP_MINLEN + phdr_len + TIMEVAL_LEN];
|
|
if (options & F_PINGFILLED) {
|
|
fill((char *)datap, payload);
|
|
}
|
|
if (source) {
|
|
bzero((char *)&sock_in, sizeof(sock_in));
|
|
sock_in.sin_family = AF_INET;
|
|
if (inet_aton(source, &sock_in.sin_addr) != 0) {
|
|
shostname = source;
|
|
} else {
|
|
hp = gethostbyname2(source, AF_INET);
|
|
if (!hp)
|
|
errx(EX_NOHOST, "cannot resolve %s: %s",
|
|
source, hstrerror(h_errno));
|
|
|
|
sock_in.sin_len = sizeof sock_in;
|
|
if ((unsigned)hp->h_length > sizeof(sock_in.sin_addr) ||
|
|
hp->h_length < 0)
|
|
errx(1, "gethostbyname2: illegal address");
|
|
memcpy(&sock_in.sin_addr, hp->h_addr_list[0],
|
|
sizeof(sock_in.sin_addr));
|
|
(void)strncpy(snamebuf, hp->h_name,
|
|
sizeof(snamebuf) - 1);
|
|
snamebuf[sizeof(snamebuf) - 1] = '\0';
|
|
shostname = snamebuf;
|
|
}
|
|
if (bind(s, (struct sockaddr *)&sock_in, sizeof sock_in) == -1)
|
|
err(1, "bind");
|
|
}
|
|
|
|
bzero(&whereto, sizeof(whereto));
|
|
to = &whereto;
|
|
to->sin_family = AF_INET;
|
|
to->sin_len = sizeof *to;
|
|
if (inet_aton(target, &to->sin_addr) != 0) {
|
|
hostname = target;
|
|
} else {
|
|
hp = gethostbyname2(target, AF_INET);
|
|
if (!hp)
|
|
errx(EX_NOHOST, "cannot resolve %s: %s",
|
|
target, hstrerror(h_errno));
|
|
|
|
if ((unsigned)hp->h_length > sizeof(to->sin_addr))
|
|
errx(1, "gethostbyname2 returned an illegal address");
|
|
memcpy(&to->sin_addr, hp->h_addr_list[0], sizeof to->sin_addr);
|
|
(void)strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1);
|
|
hnamebuf[sizeof(hnamebuf) - 1] = '\0';
|
|
hostname = hnamebuf;
|
|
}
|
|
|
|
if (options & F_FLOOD && options & F_INTERVAL)
|
|
errx(EX_USAGE, "-f and -i: incompatible options");
|
|
|
|
if (options & F_FLOOD && IN_MULTICAST(ntohl(to->sin_addr.s_addr)))
|
|
errx(EX_USAGE,
|
|
"-f flag cannot be used with multicast destination");
|
|
if (options & (F_MIF | F_NOLOOP | F_MTTL)
|
|
&& !IN_MULTICAST(ntohl(to->sin_addr.s_addr)))
|
|
errx(EX_USAGE,
|
|
"-I, -L, -T flags cannot be used with unicast destination");
|
|
|
|
if (datalen >= TIMEVAL_LEN) /* can we time transfer */
|
|
timing = 1;
|
|
|
|
if (!(options & F_PINGFILLED))
|
|
for (i = TIMEVAL_LEN; i < datalen; ++i)
|
|
*datap++ = i;
|
|
|
|
ident = getpid() & 0xFFFF;
|
|
|
|
if (s < 0) {
|
|
errno = sockerrno;
|
|
err(EX_OSERR, "socket");
|
|
}
|
|
hold = 1;
|
|
if (options & F_SO_DEBUG)
|
|
(void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
|
|
sizeof(hold));
|
|
if (options & F_SO_DONTROUTE)
|
|
(void)setsockopt(s, SOL_SOCKET, SO_DONTROUTE, (char *)&hold,
|
|
sizeof(hold));
|
|
#ifdef IPSEC
|
|
#ifdef IPSEC_POLICY_IPSEC
|
|
if (options & F_POLICY) {
|
|
char *buf;
|
|
if (policy_in != NULL) {
|
|
buf = ipsec_set_policy(policy_in, strlen(policy_in));
|
|
if (buf == NULL)
|
|
errx(EX_CONFIG, "%s", ipsec_strerror());
|
|
if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY,
|
|
buf, ipsec_get_policylen(buf)) < 0)
|
|
err(EX_CONFIG,
|
|
"ipsec policy cannot be configured");
|
|
free(buf);
|
|
}
|
|
|
|
if (policy_out != NULL) {
|
|
buf = ipsec_set_policy(policy_out, strlen(policy_out));
|
|
if (buf == NULL)
|
|
errx(EX_CONFIG, "%s", ipsec_strerror());
|
|
if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY,
|
|
buf, ipsec_get_policylen(buf)) < 0)
|
|
err(EX_CONFIG,
|
|
"ipsec policy cannot be configured");
|
|
free(buf);
|
|
}
|
|
}
|
|
#endif /*IPSEC_POLICY_IPSEC*/
|
|
#endif /*IPSEC*/
|
|
|
|
if (options & F_HDRINCL) {
|
|
ip = (struct ip*)outpackhdr;
|
|
if (!(options & (F_TTL | F_MTTL))) {
|
|
mib[0] = CTL_NET;
|
|
mib[1] = PF_INET;
|
|
mib[2] = IPPROTO_IP;
|
|
mib[3] = IPCTL_DEFTTL;
|
|
sz = sizeof(ttl);
|
|
if (sysctl(mib, 4, &ttl, &sz, NULL, 0) == -1)
|
|
err(1, "sysctl(net.inet.ip.ttl)");
|
|
}
|
|
setsockopt(s, IPPROTO_IP, IP_HDRINCL, &hold, sizeof(hold));
|
|
ip->ip_v = IPVERSION;
|
|
ip->ip_hl = sizeof(struct ip) >> 2;
|
|
ip->ip_tos = tos;
|
|
ip->ip_id = 0;
|
|
ip->ip_off = df ? IP_DF : 0;
|
|
ip->ip_ttl = ttl;
|
|
ip->ip_p = IPPROTO_ICMP;
|
|
ip->ip_src.s_addr = source ? sock_in.sin_addr.s_addr : INADDR_ANY;
|
|
ip->ip_dst = to->sin_addr;
|
|
}
|
|
/* record route option */
|
|
if (options & F_RROUTE) {
|
|
#ifdef IP_OPTIONS
|
|
bzero(rspace, sizeof(rspace));
|
|
rspace[IPOPT_OPTVAL] = IPOPT_RR;
|
|
rspace[IPOPT_OLEN] = sizeof(rspace) - 1;
|
|
rspace[IPOPT_OFFSET] = IPOPT_MINOFF;
|
|
rspace[sizeof(rspace) - 1] = IPOPT_EOL;
|
|
if (setsockopt(s, IPPROTO_IP, IP_OPTIONS, rspace,
|
|
sizeof(rspace)) < 0)
|
|
err(EX_OSERR, "setsockopt IP_OPTIONS");
|
|
#else
|
|
errx(EX_UNAVAILABLE,
|
|
"record route not available in this implementation");
|
|
#endif /* IP_OPTIONS */
|
|
}
|
|
|
|
if (options & F_TTL) {
|
|
if (setsockopt(s, IPPROTO_IP, IP_TTL, &ttl,
|
|
sizeof(ttl)) < 0) {
|
|
err(EX_OSERR, "setsockopt IP_TTL");
|
|
}
|
|
}
|
|
if (options & F_NOLOOP) {
|
|
if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP, &loop,
|
|
sizeof(loop)) < 0) {
|
|
err(EX_OSERR, "setsockopt IP_MULTICAST_LOOP");
|
|
}
|
|
}
|
|
if (options & F_MTTL) {
|
|
if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &mttl,
|
|
sizeof(mttl)) < 0) {
|
|
err(EX_OSERR, "setsockopt IP_MULTICAST_TTL");
|
|
}
|
|
}
|
|
if (options & F_MIF) {
|
|
if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF, &ifaddr,
|
|
sizeof(ifaddr)) < 0) {
|
|
err(EX_OSERR, "setsockopt IP_MULTICAST_IF");
|
|
}
|
|
}
|
|
#ifdef SO_TIMESTAMP
|
|
{ int on = 1;
|
|
if (setsockopt(s, SOL_SOCKET, SO_TIMESTAMP, &on, sizeof(on)) < 0)
|
|
err(EX_OSERR, "setsockopt SO_TIMESTAMP");
|
|
}
|
|
#endif
|
|
if (sweepmax) {
|
|
if (sweepmin >= sweepmax)
|
|
errx(EX_USAGE, "Maximum packet size must be greater than the minimum packet size");
|
|
|
|
if (datalen != DEFDATALEN)
|
|
errx(EX_USAGE, "Packet size and ping sweep are mutually exclusive");
|
|
|
|
if (npackets > 0) {
|
|
snpackets = npackets;
|
|
npackets = 0;
|
|
} else
|
|
snpackets = 1;
|
|
datalen = sweepmin;
|
|
send_len = icmp_len + sweepmin;
|
|
}
|
|
if (options & F_SWEEP && !sweepmax)
|
|
errx(EX_USAGE, "Maximum sweep size must be specified");
|
|
|
|
/*
|
|
* 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. But beware: RFC 1122 allows hosts to ignore broadcast
|
|
* or multicast pings if they wish.
|
|
*/
|
|
|
|
/*
|
|
* XXX receive buffer needs undetermined space for mbuf overhead
|
|
* as well.
|
|
*/
|
|
hold = IP_MAXPACKET + 128;
|
|
(void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
|
|
sizeof(hold));
|
|
if (uid == 0)
|
|
(void)setsockopt(s, SOL_SOCKET, SO_SNDBUF, (char *)&hold,
|
|
sizeof(hold));
|
|
|
|
if (to->sin_family == AF_INET) {
|
|
(void)printf("PING %s (%s)", hostname,
|
|
inet_ntoa(to->sin_addr));
|
|
if (source)
|
|
(void)printf(" from %s", shostname);
|
|
if (sweepmax)
|
|
(void)printf(": (%d ... %d) data bytes\n",
|
|
sweepmin, sweepmax);
|
|
else
|
|
(void)printf(": %d data bytes\n", datalen);
|
|
|
|
} else {
|
|
if (sweepmax)
|
|
(void)printf("PING %s: (%d ... %d) data bytes\n",
|
|
hostname, sweepmin, sweepmax);
|
|
else
|
|
(void)printf("PING %s: %d data bytes\n", hostname, datalen);
|
|
}
|
|
|
|
/*
|
|
* Use sigaction() instead of signal() to get unambiguous semantics,
|
|
* in particular with SA_RESTART not set.
|
|
*/
|
|
|
|
sigemptyset(&si_sa.sa_mask);
|
|
si_sa.sa_flags = 0;
|
|
|
|
si_sa.sa_handler = stopit;
|
|
if (sigaction(SIGINT, &si_sa, 0) == -1) {
|
|
err(EX_OSERR, "sigaction SIGINT");
|
|
}
|
|
|
|
si_sa.sa_handler = status;
|
|
if (sigaction(SIGINFO, &si_sa, 0) == -1) {
|
|
err(EX_OSERR, "sigaction");
|
|
}
|
|
|
|
if (alarmtimeout > 0) {
|
|
si_sa.sa_handler = stopit;
|
|
if (sigaction(SIGALRM, &si_sa, 0) == -1)
|
|
err(EX_OSERR, "sigaction SIGALRM");
|
|
}
|
|
|
|
bzero(&msg, sizeof(msg));
|
|
msg.msg_name = (caddr_t)&from;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
#ifdef SO_TIMESTAMP
|
|
msg.msg_control = (caddr_t)ctrl;
|
|
#endif
|
|
iov.iov_base = packet;
|
|
iov.iov_len = IP_MAXPACKET;
|
|
|
|
if (preload == 0)
|
|
pinger(); /* send the first ping */
|
|
else {
|
|
if (npackets != 0 && preload > npackets)
|
|
preload = npackets;
|
|
while (preload--) /* fire off them quickies */
|
|
pinger();
|
|
}
|
|
(void)gettimeofday(&last, NULL);
|
|
|
|
if (options & F_FLOOD) {
|
|
intvl.tv_sec = 0;
|
|
intvl.tv_usec = 10000;
|
|
} else {
|
|
intvl.tv_sec = interval / 1000;
|
|
intvl.tv_usec = interval % 1000 * 1000;
|
|
}
|
|
|
|
almost_done = 0;
|
|
while (!finish_up) {
|
|
struct timeval now, timeout;
|
|
fd_set rfds;
|
|
int cc, n;
|
|
|
|
check_status();
|
|
if ((unsigned)s >= FD_SETSIZE)
|
|
errx(EX_OSERR, "descriptor too large");
|
|
FD_ZERO(&rfds);
|
|
FD_SET(s, &rfds);
|
|
(void)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; /* Must be EINTR. */
|
|
if (n == 1) {
|
|
struct timeval *tv = NULL;
|
|
#ifdef SO_TIMESTAMP
|
|
struct cmsghdr *cmsg = (struct cmsghdr *)&ctrl;
|
|
|
|
msg.msg_controllen = sizeof(ctrl);
|
|
#endif
|
|
msg.msg_namelen = sizeof(from);
|
|
if ((cc = recvmsg(s, &msg, 0)) < 0) {
|
|
if (errno == EINTR)
|
|
continue;
|
|
warn("recvmsg");
|
|
continue;
|
|
}
|
|
#ifdef SO_TIMESTAMP
|
|
if (cmsg->cmsg_level == SOL_SOCKET &&
|
|
cmsg->cmsg_type == SCM_TIMESTAMP &&
|
|
cmsg->cmsg_len == CMSG_LEN(sizeof *tv)) {
|
|
/* Copy to avoid alignment problems: */
|
|
memcpy(&now, CMSG_DATA(cmsg), sizeof(now));
|
|
tv = &now;
|
|
}
|
|
#endif
|
|
if (tv == NULL) {
|
|
(void)gettimeofday(&now, NULL);
|
|
tv = &now;
|
|
}
|
|
pr_pack((char *)packet, cc, &from, tv);
|
|
if ((options & F_ONCE && nreceived) ||
|
|
(npackets && nreceived >= npackets))
|
|
break;
|
|
}
|
|
if (n == 0 || options & F_FLOOD) {
|
|
if (sweepmax && sntransmitted == snpackets) {
|
|
for (i = 0; i < sweepincr ; ++i)
|
|
*datap++ = i;
|
|
datalen += sweepincr;
|
|
if (datalen > sweepmax)
|
|
break;
|
|
send_len = icmp_len + datalen;
|
|
sntransmitted = 0;
|
|
}
|
|
if (!npackets || ntransmitted < npackets)
|
|
pinger();
|
|
else {
|
|
if (almost_done)
|
|
break;
|
|
almost_done = 1;
|
|
intvl.tv_usec = 0;
|
|
if (nreceived) {
|
|
intvl.tv_sec = 2 * tmax / 1000;
|
|
if (!intvl.tv_sec)
|
|
intvl.tv_sec = 1;
|
|
} else {
|
|
intvl.tv_sec = waittime / 1000;
|
|
intvl.tv_usec = waittime % 1000 * 1000;
|
|
}
|
|
}
|
|
(void)gettimeofday(&last, NULL);
|
|
if (ntransmitted - nreceived - 1 > nmissedmax) {
|
|
nmissedmax = ntransmitted - nreceived - 1;
|
|
if (options & F_MISSED)
|
|
(void)write(STDOUT_FILENO, &BBELL, 1);
|
|
}
|
|
}
|
|
}
|
|
finish();
|
|
/* NOTREACHED */
|
|
exit(0); /* Make the compiler happy */
|
|
}
|
|
|
|
/*
|
|
* stopit --
|
|
* Set the global bit that causes the main loop to quit.
|
|
* Do NOT call finish() from here, since finish() does far too much
|
|
* to be called from a signal handler.
|
|
*/
|
|
void
|
|
stopit(sig)
|
|
int sig __unused;
|
|
{
|
|
|
|
/*
|
|
* When doing reverse DNS lookups, the finish_up flag might not
|
|
* be noticed for a while. Just exit if we get a second SIGINT.
|
|
*/
|
|
if (!(options & F_NUMERIC) && finish_up)
|
|
_exit(nreceived ? 0 : 2);
|
|
finish_up = 1;
|
|
}
|
|
|
|
/*
|
|
* 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 TIMEVAL_LEN
|
|
* bytes of the data portion are used to hold a UNIX "timeval" struct in
|
|
* host byte-order, to compute the round-trip time.
|
|
*/
|
|
static void
|
|
pinger(void)
|
|
{
|
|
struct timeval now;
|
|
struct tv32 tv32;
|
|
struct ip *ip;
|
|
struct icmp *icp;
|
|
int cc, i;
|
|
u_char *packet;
|
|
|
|
packet = outpack;
|
|
icp = (struct icmp *)outpack;
|
|
icp->icmp_type = icmp_type;
|
|
icp->icmp_code = 0;
|
|
icp->icmp_cksum = 0;
|
|
icp->icmp_seq = htons(ntransmitted);
|
|
icp->icmp_id = ident; /* ID */
|
|
|
|
CLR(ntransmitted % mx_dup_ck);
|
|
|
|
if ((options & F_TIME) || timing) {
|
|
(void)gettimeofday(&now, NULL);
|
|
|
|
tv32.tv32_sec = htonl(now.tv_sec);
|
|
tv32.tv32_usec = htonl(now.tv_usec);
|
|
if (options & F_TIME)
|
|
icp->icmp_otime = htonl((now.tv_sec % (24*60*60))
|
|
* 1000 + now.tv_usec / 1000);
|
|
if (timing)
|
|
bcopy((void *)&tv32,
|
|
(void *)&outpack[ICMP_MINLEN + phdr_len],
|
|
sizeof(tv32));
|
|
}
|
|
|
|
cc = ICMP_MINLEN + phdr_len + datalen;
|
|
|
|
/* compute ICMP checksum here */
|
|
icp->icmp_cksum = in_cksum((u_short *)icp, cc);
|
|
|
|
if (options & F_HDRINCL) {
|
|
cc += sizeof(struct ip);
|
|
ip = (struct ip *)outpackhdr;
|
|
ip->ip_len = cc;
|
|
ip->ip_sum = in_cksum((u_short *)outpackhdr, cc);
|
|
packet = outpackhdr;
|
|
}
|
|
i = sendto(s, (char *)packet, cc, 0, (struct sockaddr *)&whereto,
|
|
sizeof(whereto));
|
|
|
|
if (i < 0 || i != cc) {
|
|
if (i < 0) {
|
|
if (options & F_FLOOD && errno == ENOBUFS) {
|
|
usleep(FLOOD_BACKOFF);
|
|
return;
|
|
}
|
|
warn("sendto");
|
|
} else {
|
|
warn("%s: partial write: %d of %d bytes",
|
|
hostname, i, cc);
|
|
}
|
|
}
|
|
ntransmitted++;
|
|
sntransmitted++;
|
|
if (!(options & F_QUIET) && options & F_FLOOD)
|
|
(void)write(STDOUT_FILENO, &DOT, 1);
|
|
}
|
|
|
|
/*
|
|
* 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(buf, cc, from, tv)
|
|
char *buf;
|
|
int cc;
|
|
struct sockaddr_in *from;
|
|
struct timeval *tv;
|
|
{
|
|
struct in_addr ina;
|
|
u_char *cp, *dp;
|
|
struct icmp *icp;
|
|
struct ip *ip;
|
|
const void *tp;
|
|
double triptime;
|
|
int dupflag, hlen, i, j, recv_len, seq;
|
|
static int old_rrlen;
|
|
static char old_rr[MAX_IPOPTLEN];
|
|
|
|
/* Check the IP header */
|
|
ip = (struct ip *)buf;
|
|
hlen = ip->ip_hl << 2;
|
|
recv_len = cc;
|
|
if (cc < hlen + ICMP_MINLEN) {
|
|
if (options & F_VERBOSE)
|
|
warn("packet too short (%d bytes) from %s", cc,
|
|
inet_ntoa(from->sin_addr));
|
|
return;
|
|
}
|
|
|
|
/* Now the ICMP part */
|
|
cc -= hlen;
|
|
icp = (struct icmp *)(buf + hlen);
|
|
if (icp->icmp_type == icmp_type_rsp) {
|
|
if (icp->icmp_id != ident)
|
|
return; /* 'Twas not our ECHO */
|
|
++nreceived;
|
|
triptime = 0.0;
|
|
if (timing) {
|
|
struct timeval tv1;
|
|
struct tv32 tv32;
|
|
#ifndef icmp_data
|
|
tp = &icp->icmp_ip;
|
|
#else
|
|
tp = icp->icmp_data;
|
|
#endif
|
|
tp = (const char *)tp + phdr_len;
|
|
|
|
if (cc - ICMP_MINLEN - phdr_len >= sizeof(tv1)) {
|
|
/* Copy to avoid alignment problems: */
|
|
memcpy(&tv32, tp, sizeof(tv32));
|
|
tv1.tv_sec = ntohl(tv32.tv32_sec);
|
|
tv1.tv_usec = ntohl(tv32.tv32_usec);
|
|
tvsub(tv, &tv1);
|
|
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;
|
|
} else
|
|
timing = 0;
|
|
}
|
|
|
|
seq = ntohs(icp->icmp_seq);
|
|
|
|
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 {
|
|
(void)printf("%d bytes from %s: icmp_seq=%u", cc,
|
|
inet_ntoa(*(struct in_addr *)&from->sin_addr.s_addr),
|
|
seq);
|
|
(void)printf(" ttl=%d", ip->ip_ttl);
|
|
if (timing)
|
|
(void)printf(" time=%.3f ms", triptime);
|
|
if (dupflag)
|
|
(void)printf(" (DUP!)");
|
|
if (options & F_AUDIBLE)
|
|
(void)write(STDOUT_FILENO, &BBELL, 1);
|
|
if (options & F_MASK) {
|
|
/* Just prentend this cast isn't ugly */
|
|
(void)printf(" mask=%s",
|
|
pr_addr(*(struct in_addr *)&(icp->icmp_mask)));
|
|
}
|
|
if (options & F_TIME) {
|
|
(void)printf(" tso=%s", pr_ntime(icp->icmp_otime));
|
|
(void)printf(" tsr=%s", pr_ntime(icp->icmp_rtime));
|
|
(void)printf(" tst=%s", pr_ntime(icp->icmp_ttime));
|
|
}
|
|
if (recv_len != send_len) {
|
|
(void)printf(
|
|
"\nwrong total length %d instead of %d",
|
|
recv_len, send_len);
|
|
}
|
|
/* check the data */
|
|
cp = (u_char*)&icp->icmp_data[phdr_len];
|
|
dp = &outpack[ICMP_MINLEN + phdr_len];
|
|
cc -= ICMP_MINLEN + phdr_len;
|
|
i = 0;
|
|
if (timing) { /* don't check variable timestamp */
|
|
cp += TIMEVAL_LEN;
|
|
dp += TIMEVAL_LEN;
|
|
cc -= TIMEVAL_LEN;
|
|
i += TIMEVAL_LEN;
|
|
}
|
|
for (; i < datalen && cc > 0; ++i, ++cp, ++dp, --cc) {
|
|
if (*cp != *dp) {
|
|
(void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x",
|
|
i, *dp, *cp);
|
|
(void)printf("\ncp:");
|
|
cp = (u_char*)&icp->icmp_data[0];
|
|
for (i = 0; i < datalen; ++i, ++cp) {
|
|
if ((i % 16) == 8)
|
|
(void)printf("\n\t");
|
|
(void)printf("%2x ", *cp);
|
|
}
|
|
(void)printf("\ndp:");
|
|
cp = &outpack[ICMP_MINLEN];
|
|
for (i = 0; i < datalen; ++i, ++cp) {
|
|
if ((i % 16) == 8)
|
|
(void)printf("\n\t");
|
|
(void)printf("%2x ", *cp);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* We've got something other than an ECHOREPLY.
|
|
* See if it's a reply to something that we sent.
|
|
* We can compare IP destination, protocol,
|
|
* and ICMP type and ID.
|
|
*
|
|
* Only print all the error messages if we are running
|
|
* as root to avoid leaking information not normally
|
|
* available to those not running as root.
|
|
*/
|
|
#ifndef icmp_data
|
|
struct ip *oip = &icp->icmp_ip;
|
|
#else
|
|
struct ip *oip = (struct ip *)icp->icmp_data;
|
|
#endif
|
|
struct icmp *oicmp = (struct icmp *)(oip + 1);
|
|
|
|
if (((options & F_VERBOSE) && uid == 0) ||
|
|
(!(options & F_QUIET2) &&
|
|
(oip->ip_dst.s_addr == whereto.sin_addr.s_addr) &&
|
|
(oip->ip_p == IPPROTO_ICMP) &&
|
|
(oicmp->icmp_type == ICMP_ECHO) &&
|
|
(oicmp->icmp_id == ident))) {
|
|
(void)printf("%d bytes from %s: ", cc,
|
|
pr_addr(from->sin_addr));
|
|
pr_icmph(icp);
|
|
} else
|
|
return;
|
|
}
|
|
|
|
/* Display any IP options */
|
|
cp = (u_char *)buf + sizeof(struct ip);
|
|
|
|
for (; hlen > (int)sizeof(struct ip); --hlen, ++cp)
|
|
switch (*cp) {
|
|
case IPOPT_EOL:
|
|
hlen = 0;
|
|
break;
|
|
case IPOPT_LSRR:
|
|
case IPOPT_SSRR:
|
|
(void)printf(*cp == IPOPT_LSRR ?
|
|
"\nLSRR: " : "\nSSRR: ");
|
|
j = cp[IPOPT_OLEN] - IPOPT_MINOFF + 1;
|
|
hlen -= 2;
|
|
cp += 2;
|
|
if (j >= INADDR_LEN &&
|
|
j <= hlen - (int)sizeof(struct ip)) {
|
|
for (;;) {
|
|
bcopy(++cp, &ina.s_addr, INADDR_LEN);
|
|
if (ina.s_addr == 0)
|
|
(void)printf("\t0.0.0.0");
|
|
else
|
|
(void)printf("\t%s",
|
|
pr_addr(ina));
|
|
hlen -= INADDR_LEN;
|
|
cp += INADDR_LEN - 1;
|
|
j -= INADDR_LEN;
|
|
if (j < INADDR_LEN)
|
|
break;
|
|
(void)putchar('\n');
|
|
}
|
|
} else
|
|
(void)printf("\t(truncated route)\n");
|
|
break;
|
|
case IPOPT_RR:
|
|
j = cp[IPOPT_OLEN]; /* get length */
|
|
i = cp[IPOPT_OFFSET]; /* and pointer */
|
|
hlen -= 2;
|
|
cp += 2;
|
|
if (i > j)
|
|
i = j;
|
|
i = i - IPOPT_MINOFF + 1;
|
|
if (i < 0 || i > (hlen - (int)sizeof(struct ip))) {
|
|
old_rrlen = 0;
|
|
continue;
|
|
}
|
|
if (i == old_rrlen
|
|
&& !bcmp((char *)cp, old_rr, i)
|
|
&& !(options & F_FLOOD)) {
|
|
(void)printf("\t(same route)");
|
|
hlen -= i;
|
|
cp += i;
|
|
break;
|
|
}
|
|
old_rrlen = i;
|
|
bcopy((char *)cp, old_rr, i);
|
|
(void)printf("\nRR: ");
|
|
if (i >= INADDR_LEN &&
|
|
i <= hlen - (int)sizeof(struct ip)) {
|
|
for (;;) {
|
|
bcopy(++cp, &ina.s_addr, INADDR_LEN);
|
|
if (ina.s_addr == 0)
|
|
(void)printf("\t0.0.0.0");
|
|
else
|
|
(void)printf("\t%s",
|
|
pr_addr(ina));
|
|
hlen -= INADDR_LEN;
|
|
cp += INADDR_LEN - 1;
|
|
i -= INADDR_LEN;
|
|
if (i < INADDR_LEN)
|
|
break;
|
|
(void)putchar('\n');
|
|
}
|
|
} else
|
|
(void)printf("\t(truncated route)");
|
|
break;
|
|
case IPOPT_NOP:
|
|
(void)printf("\nNOP");
|
|
break;
|
|
default:
|
|
(void)printf("\nunknown option %x", *cp);
|
|
break;
|
|
}
|
|
if (!(options & F_FLOOD)) {
|
|
(void)putchar('\n');
|
|
(void)fflush(stdout);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* in_cksum --
|
|
* Checksum routine for Internet Protocol family headers (C Version)
|
|
*/
|
|
u_short
|
|
in_cksum(addr, len)
|
|
u_short *addr;
|
|
int len;
|
|
{
|
|
int nleft, sum;
|
|
u_short *w;
|
|
union {
|
|
u_short us;
|
|
u_char uc[2];
|
|
} last;
|
|
u_short answer;
|
|
|
|
nleft = len;
|
|
sum = 0;
|
|
w = addr;
|
|
|
|
/*
|
|
* Our algorithm is simple, using a 32 bit accumulator (sum), we add
|
|
* sequential 16 bit words to it, and at the end, fold back all the
|
|
* carry bits from the top 16 bits into the lower 16 bits.
|
|
*/
|
|
while (nleft > 1) {
|
|
sum += *w++;
|
|
nleft -= 2;
|
|
}
|
|
|
|
/* mop up an odd byte, if necessary */
|
|
if (nleft == 1) {
|
|
last.uc[0] = *(u_char *)w;
|
|
last.uc[1] = 0;
|
|
sum += last.us;
|
|
}
|
|
|
|
/* add back carry outs from top 16 bits to low 16 bits */
|
|
sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */
|
|
sum += (sum >> 16); /* add carry */
|
|
answer = ~sum; /* truncate to 16 bits */
|
|
return(answer);
|
|
}
|
|
|
|
/*
|
|
* tvsub --
|
|
* Subtract 2 timeval structs: out = out - in. Out is assumed to
|
|
* be >= in.
|
|
*/
|
|
static void
|
|
tvsub(out, in)
|
|
struct timeval *out, *in;
|
|
{
|
|
|
|
if ((out->tv_usec -= in->tv_usec) < 0) {
|
|
--out->tv_sec;
|
|
out->tv_usec += 1000000;
|
|
}
|
|
out->tv_sec -= in->tv_sec;
|
|
}
|
|
|
|
/*
|
|
* status --
|
|
* Print out statistics when SIGINFO is received.
|
|
*/
|
|
|
|
static void
|
|
status(sig)
|
|
int sig __unused;
|
|
{
|
|
|
|
siginfo_p = 1;
|
|
}
|
|
|
|
static void
|
|
check_status()
|
|
{
|
|
|
|
if (siginfo_p) {
|
|
siginfo_p = 0;
|
|
(void)fprintf(stderr, "\r%ld/%ld packets received (%.1f%%)",
|
|
nreceived, ntransmitted,
|
|
ntransmitted ? nreceived * 100.0 / ntransmitted : 0.0);
|
|
if (nreceived && timing)
|
|
(void)fprintf(stderr, " %.3f min / %.3f avg / %.3f max",
|
|
tmin, tsum / (nreceived + nrepeats), tmax);
|
|
(void)fprintf(stderr, "\n");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* finish --
|
|
* Print out statistics, and give up.
|
|
*/
|
|
static void
|
|
finish()
|
|
{
|
|
|
|
(void)signal(SIGINT, SIG_IGN);
|
|
(void)signal(SIGALRM, SIG_IGN);
|
|
(void)putchar('\n');
|
|
(void)fflush(stdout);
|
|
(void)printf("--- %s ping 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 printing up packets!");
|
|
else
|
|
(void)printf("%.1f%% packet loss",
|
|
((ntransmitted - nreceived) * 100.0) /
|
|
ntransmitted);
|
|
}
|
|
if (nrcvtimeout)
|
|
(void)printf(", %ld packets out of wait time", nrcvtimeout);
|
|
(void)putchar('\n');
|
|
if (nreceived && timing) {
|
|
double n = nreceived + nrepeats;
|
|
double avg = tsum / n;
|
|
double vari = tsumsq / n - avg * avg;
|
|
(void)printf(
|
|
"round-trip min/avg/max/stddev = %.3f/%.3f/%.3f/%.3f ms\n",
|
|
tmin, avg, tmax, sqrt(vari));
|
|
}
|
|
|
|
if (nreceived)
|
|
exit(0);
|
|
else
|
|
exit(2);
|
|
}
|
|
|
|
#ifdef notdef
|
|
static char *ttab[] = {
|
|
"Echo Reply", /* ip + seq + udata */
|
|
"Dest Unreachable", /* net, host, proto, port, frag, sr + IP */
|
|
"Source Quench", /* IP */
|
|
"Redirect", /* redirect type, gateway, + IP */
|
|
"Echo",
|
|
"Time Exceeded", /* transit, frag reassem + IP */
|
|
"Parameter Problem", /* pointer + IP */
|
|
"Timestamp", /* id + seq + three timestamps */
|
|
"Timestamp Reply", /* " */
|
|
"Info Request", /* id + sq */
|
|
"Info Reply" /* " */
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
* pr_icmph --
|
|
* Print a descriptive string about an ICMP header.
|
|
*/
|
|
static void
|
|
pr_icmph(icp)
|
|
struct icmp *icp;
|
|
{
|
|
|
|
switch(icp->icmp_type) {
|
|
case ICMP_ECHOREPLY:
|
|
(void)printf("Echo Reply\n");
|
|
/* XXX ID + Seq + Data */
|
|
break;
|
|
case ICMP_UNREACH:
|
|
switch(icp->icmp_code) {
|
|
case ICMP_UNREACH_NET:
|
|
(void)printf("Destination Net Unreachable\n");
|
|
break;
|
|
case ICMP_UNREACH_HOST:
|
|
(void)printf("Destination Host Unreachable\n");
|
|
break;
|
|
case ICMP_UNREACH_PROTOCOL:
|
|
(void)printf("Destination Protocol Unreachable\n");
|
|
break;
|
|
case ICMP_UNREACH_PORT:
|
|
(void)printf("Destination Port Unreachable\n");
|
|
break;
|
|
case ICMP_UNREACH_NEEDFRAG:
|
|
(void)printf("frag needed and DF set (MTU %d)\n",
|
|
ntohs(icp->icmp_nextmtu));
|
|
break;
|
|
case ICMP_UNREACH_SRCFAIL:
|
|
(void)printf("Source Route Failed\n");
|
|
break;
|
|
case ICMP_UNREACH_FILTER_PROHIB:
|
|
(void)printf("Communication prohibited by filter\n");
|
|
break;
|
|
default:
|
|
(void)printf("Dest Unreachable, Bad Code: %d\n",
|
|
icp->icmp_code);
|
|
break;
|
|
}
|
|
/* Print returned IP header information */
|
|
#ifndef icmp_data
|
|
pr_retip(&icp->icmp_ip);
|
|
#else
|
|
pr_retip((struct ip *)icp->icmp_data);
|
|
#endif
|
|
break;
|
|
case ICMP_SOURCEQUENCH:
|
|
(void)printf("Source Quench\n");
|
|
#ifndef icmp_data
|
|
pr_retip(&icp->icmp_ip);
|
|
#else
|
|
pr_retip((struct ip *)icp->icmp_data);
|
|
#endif
|
|
break;
|
|
case ICMP_REDIRECT:
|
|
switch(icp->icmp_code) {
|
|
case ICMP_REDIRECT_NET:
|
|
(void)printf("Redirect Network");
|
|
break;
|
|
case ICMP_REDIRECT_HOST:
|
|
(void)printf("Redirect Host");
|
|
break;
|
|
case ICMP_REDIRECT_TOSNET:
|
|
(void)printf("Redirect Type of Service and Network");
|
|
break;
|
|
case ICMP_REDIRECT_TOSHOST:
|
|
(void)printf("Redirect Type of Service and Host");
|
|
break;
|
|
default:
|
|
(void)printf("Redirect, Bad Code: %d", icp->icmp_code);
|
|
break;
|
|
}
|
|
(void)printf("(New addr: %s)\n", inet_ntoa(icp->icmp_gwaddr));
|
|
#ifndef icmp_data
|
|
pr_retip(&icp->icmp_ip);
|
|
#else
|
|
pr_retip((struct ip *)icp->icmp_data);
|
|
#endif
|
|
break;
|
|
case ICMP_ECHO:
|
|
(void)printf("Echo Request\n");
|
|
/* XXX ID + Seq + Data */
|
|
break;
|
|
case ICMP_TIMXCEED:
|
|
switch(icp->icmp_code) {
|
|
case ICMP_TIMXCEED_INTRANS:
|
|
(void)printf("Time to live exceeded\n");
|
|
break;
|
|
case ICMP_TIMXCEED_REASS:
|
|
(void)printf("Frag reassembly time exceeded\n");
|
|
break;
|
|
default:
|
|
(void)printf("Time exceeded, Bad Code: %d\n",
|
|
icp->icmp_code);
|
|
break;
|
|
}
|
|
#ifndef icmp_data
|
|
pr_retip(&icp->icmp_ip);
|
|
#else
|
|
pr_retip((struct ip *)icp->icmp_data);
|
|
#endif
|
|
break;
|
|
case ICMP_PARAMPROB:
|
|
(void)printf("Parameter problem: pointer = 0x%02x\n",
|
|
icp->icmp_hun.ih_pptr);
|
|
#ifndef icmp_data
|
|
pr_retip(&icp->icmp_ip);
|
|
#else
|
|
pr_retip((struct ip *)icp->icmp_data);
|
|
#endif
|
|
break;
|
|
case ICMP_TSTAMP:
|
|
(void)printf("Timestamp\n");
|
|
/* XXX ID + Seq + 3 timestamps */
|
|
break;
|
|
case ICMP_TSTAMPREPLY:
|
|
(void)printf("Timestamp Reply\n");
|
|
/* XXX ID + Seq + 3 timestamps */
|
|
break;
|
|
case ICMP_IREQ:
|
|
(void)printf("Information Request\n");
|
|
/* XXX ID + Seq */
|
|
break;
|
|
case ICMP_IREQREPLY:
|
|
(void)printf("Information Reply\n");
|
|
/* XXX ID + Seq */
|
|
break;
|
|
case ICMP_MASKREQ:
|
|
(void)printf("Address Mask Request\n");
|
|
break;
|
|
case ICMP_MASKREPLY:
|
|
(void)printf("Address Mask Reply\n");
|
|
break;
|
|
case ICMP_ROUTERADVERT:
|
|
(void)printf("Router Advertisement\n");
|
|
break;
|
|
case ICMP_ROUTERSOLICIT:
|
|
(void)printf("Router Solicitation\n");
|
|
break;
|
|
default:
|
|
(void)printf("Bad ICMP type: %d\n", icp->icmp_type);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* pr_iph --
|
|
* Print an IP header with options.
|
|
*/
|
|
static void
|
|
pr_iph(ip)
|
|
struct ip *ip;
|
|
{
|
|
u_char *cp;
|
|
int hlen;
|
|
|
|
hlen = ip->ip_hl << 2;
|
|
cp = (u_char *)ip + 20; /* point to options */
|
|
|
|
(void)printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst\n");
|
|
(void)printf(" %1x %1x %02x %04x %04x",
|
|
ip->ip_v, ip->ip_hl, ip->ip_tos, ntohs(ip->ip_len),
|
|
ntohs(ip->ip_id));
|
|
(void)printf(" %1lx %04lx",
|
|
(u_long) (ntohl(ip->ip_off) & 0xe000) >> 13,
|
|
(u_long) ntohl(ip->ip_off) & 0x1fff);
|
|
(void)printf(" %02x %02x %04x", ip->ip_ttl, ip->ip_p,
|
|
ntohs(ip->ip_sum));
|
|
(void)printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->ip_src.s_addr));
|
|
(void)printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->ip_dst.s_addr));
|
|
/* dump any option bytes */
|
|
while (hlen-- > 20) {
|
|
(void)printf("%02x", *cp++);
|
|
}
|
|
(void)putchar('\n');
|
|
}
|
|
|
|
/*
|
|
* pr_addr --
|
|
* Return an ascii host address as a dotted quad and optionally with
|
|
* a hostname.
|
|
*/
|
|
static char *
|
|
pr_addr(ina)
|
|
struct in_addr ina;
|
|
{
|
|
struct hostent *hp;
|
|
static char buf[16 + 3 + MAXHOSTNAMELEN];
|
|
|
|
if ((options & F_NUMERIC) ||
|
|
!(hp = gethostbyaddr((char *)&ina, 4, AF_INET)))
|
|
return inet_ntoa(ina);
|
|
else
|
|
(void)snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name,
|
|
inet_ntoa(ina));
|
|
return(buf);
|
|
}
|
|
|
|
/*
|
|
* pr_retip --
|
|
* Dump some info on a returned (via ICMP) IP packet.
|
|
*/
|
|
static void
|
|
pr_retip(ip)
|
|
struct ip *ip;
|
|
{
|
|
u_char *cp;
|
|
int hlen;
|
|
|
|
pr_iph(ip);
|
|
hlen = ip->ip_hl << 2;
|
|
cp = (u_char *)ip + hlen;
|
|
|
|
if (ip->ip_p == 6)
|
|
(void)printf("TCP: from port %u, to port %u (decimal)\n",
|
|
(*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3)));
|
|
else if (ip->ip_p == 17)
|
|
(void)printf("UDP: from port %u, to port %u (decimal)\n",
|
|
(*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3)));
|
|
}
|
|
|
|
static char *
|
|
pr_ntime (n_time timestamp)
|
|
{
|
|
static char buf[10];
|
|
int hour, min, sec;
|
|
|
|
sec = ntohl(timestamp) / 1000;
|
|
hour = sec / 60 / 60;
|
|
min = (sec % (60 * 60)) / 60;
|
|
sec = (sec % (60 * 60)) % 60;
|
|
|
|
(void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d", hour, min, sec);
|
|
|
|
return (buf);
|
|
}
|
|
|
|
static void
|
|
fill(bp, patp)
|
|
char *bp, *patp;
|
|
{
|
|
char *cp;
|
|
int pat[16];
|
|
u_int ii, jj, kk;
|
|
|
|
for (cp = patp; *cp; cp++) {
|
|
if (!isxdigit(*cp))
|
|
errx(EX_USAGE,
|
|
"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]);
|
|
|
|
if (ii > 0)
|
|
for (kk = 0; kk <= maxpayload - (TIMEVAL_LEN + 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");
|
|
}
|
|
}
|
|
|
|
#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
|
|
#define SECOPT " [-P policy]"
|
|
#else
|
|
#define SECOPT ""
|
|
#endif
|
|
static void
|
|
usage()
|
|
{
|
|
|
|
(void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
|
"usage: ping [-AaDdfnoQqRrv] [-c count] [-G sweepmaxsize] [-g sweepminsize]",
|
|
" [-h sweepincrsize] [-i wait] [-l preload] [-M mask | time] [-m ttl]",
|
|
" " SECOPT " [-p pattern] [-S src_addr] [-s packetsize] [-t timeout]",
|
|
" [-W waittime] [-z tos] host",
|
|
" ping [-AaDdfLnoQqRrv] [-c count] [-I iface] [-i wait] [-l preload]",
|
|
" [-M mask | time] [-m ttl]" SECOPT " [-p pattern] [-S src_addr]",
|
|
" [-s packetsize] [-T ttl] [-t timeout] [-W waittime]",
|
|
" [-z tos] mcast-group");
|
|
exit(EX_USAGE);
|
|
}
|