ping.c revision 157535
110015Speter/* 212496Speter * Copyright (c) 1989, 1993 310015Speter * The Regents of the University of California. All rights reserved. 410015Speter * 510015Speter * This code is derived from software contributed to Berkeley by 610015Speter * Mike Muuss. 710015Speter * 810015Speter * Redistribution and use in source and binary forms, with or without 910015Speter * modification, are permitted provided that the following conditions 1010015Speter * are met: 1110015Speter * 1. Redistributions of source code must retain the above copyright 1210015Speter * notice, this list of conditions and the following disclaimer. 1310015Speter * 2. Redistributions in binary form must reproduce the above copyright 1410015Speter * notice, this list of conditions and the following disclaimer in the 1510015Speter * documentation and/or other materials provided with the distribution. 1610015Speter * 4. Neither the name of the University nor the names of its contributors 1710015Speter * may be used to endorse or promote products derived from this software 1810015Speter * without specific prior written permission. 1910015Speter * 2010015Speter * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2110015Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2210015Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2310015Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2410015Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2510015Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2610015Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2710015Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2810015Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2910015Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3010015Speter * SUCH DAMAGE. 3110015Speter */ 3210015Speter 3318515Speter#if 0 3410015Speter#ifndef lint 3510015Speterstatic const char copyright[] = 3610015Speter"@(#) Copyright (c) 1989, 1993\n\ 3716322Sgpalmer The Regents of the University of California. All rights reserved.\n"; 3816322Sgpalmer#endif /* not lint */ 3916322Sgpalmer 4010015Speter#ifndef lint 4110015Speterstatic char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93"; 4210015Speter#endif /* not lint */ 4310015Speter#endif 4410015Speter#include <sys/cdefs.h> 4510015Speter__FBSDID("$FreeBSD: head/sbin/ping/ping.c 157535 2006-04-05 12:30:42Z glebius $"); 4610015Speter 4710015Speter/* 4810015Speter * P I N G . C 4910015Speter * 5010015Speter * Using the Internet Control Message Protocol (ICMP) "ECHO" facility, 5110015Speter * measure round-trip-delays and packet loss across network paths. 5210015Speter * 5310015Speter * Author - 5410015Speter * Mike Muuss 5515683Speter * U. S. Army Ballistic Research Laboratory 5612675Sjulian * December, 1983 5712675Sjulian * 5812675Sjulian * Status - 5910015Speter * Public Domain. Distribution Unlimited. 6010015Speter * Bugs - 6110015Speter * More statistics could always be gathered. 6212659Sbde * This program has to run SUID to ROOT to access the ICMP socket. 6312662Sdg */ 6412662Sdg 6512659Sbde#include <sys/param.h> /* NB: we rely on this for <sys/types.h> */ 6610015Speter#include <sys/socket.h> 6710015Speter#include <sys/sysctl.h> 6810015Speter#include <sys/time.h> 6910015Speter#include <sys/uio.h> 7010015Speter 7110015Speter#include <netinet/in.h> 7213353Speter#include <netinet/in_systm.h> 7310015Speter#include <netinet/ip.h> 7410015Speter#include <netinet/ip_icmp.h> 7510015Speter#include <netinet/ip_var.h> 7610015Speter#include <arpa/inet.h> 7710015Speter 7812496Speter#ifdef IPSEC 7910015Speter#include <netinet6/ipsec.h> 8010015Speter#endif /*IPSEC*/ 8110015Speter 8210015Speter#include <ctype.h> 8310015Speter#include <err.h> 8417547Speter#include <errno.h> 8517547Speter#include <math.h> 8617547Speter#include <netdb.h> 8710047Speter#include <signal.h> 8812496Speter#include <stdio.h> 8915639Speter#include <stdlib.h> 9015639Speter#include <string.h> 9110015Speter#include <sysexits.h> 9210015Speter#include <unistd.h> 9310015Speter 9410015Speter#define INADDR_LEN ((int)sizeof(in_addr_t)) 9510015Speter#define TIMEVAL_LEN ((int)sizeof(struct tv32)) 9610015Speter#define MASK_LEN (ICMP_MASKLEN - ICMP_MINLEN) 9710015Speter#define TS_LEN (ICMP_TSLEN - ICMP_MINLEN) 9810015Speter#define DEFDATALEN 56 /* default data length */ 9910015Speter#define FLOOD_BACKOFF 20000 /* usecs to back off if F_FLOOD mode */ 10010015Speter /* runs out of buffer space */ 10110015Speter#define MAXIPLEN (sizeof(struct ip) + MAX_IPOPTLEN) 10210015Speter#define MAXICMPLEN (ICMP_ADVLENMIN + MAX_IPOPTLEN) 10310015Speter#define MAXWAIT 10000 /* max ms to wait for response */ 10410015Speter#define MAXALARM (60 * 60) /* max seconds for alarm timeout */ 10512724Sphk#define MAXTOS 255 10610015Speter 10712724Sphk#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */ 10812724Sphk#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */ 10910708Speter#define SET(bit) (A(bit) |= B(bit)) 11010708Speter#define CLR(bit) (A(bit) &= (~B(bit))) 11112675Sjulian#define TST(bit) (A(bit) & B(bit)) 11212675Sjulian 11312675Sjulianstruct tv32 { 11412675Sjulian int32_t tv32_sec; 11512675Sjulian int32_t tv32_usec; 11612675Sjulian}; 11712675Sjulian 11812675Sjulian/* various options */ 11912675Sjulianint options; 12012675Sjulian#define F_FLOOD 0x0001 12112731Sbde#define F_INTERVAL 0x0002 12212675Sjulian#define F_NUMERIC 0x0004 12312675Sjulian#define F_PINGFILLED 0x0008 12412678Sphk#define F_QUIET 0x0010 12512675Sjulian#define F_RROUTE 0x0020 12612743Sbde#define F_SO_DEBUG 0x0040 12712742Sbde#define F_SO_DONTROUTE 0x0080 12812675Sjulian#define F_VERBOSE 0x0100 12912675Sjulian#define F_QUIET2 0x0200 13012174Speter#define F_NOLOOP 0x0400 13113353Speter#define F_MTTL 0x0800 13213353Speter#define F_MIF 0x1000 13313353Speter#define F_AUDIBLE 0x2000 13410708Speter#ifdef IPSEC 13513353Speter#ifdef IPSEC_POLICY_IPSEC 13610708Speter#define F_POLICY 0x4000 13713353Speter#endif /*IPSEC_POLICY_IPSEC*/ 13810708Speter#endif /*IPSEC*/ 13910708Speter#define F_TTL 0x8000 14010708Speter#define F_MISSED 0x10000 14110708Speter#define F_ONCE 0x20000 14210962Speter#define F_HDRINCL 0x40000 14310962Speter#define F_MASK 0x80000 14410962Speter#define F_TIME 0x100000 14510015Speter#define F_SWEEP 0x200000 14610962Speter#define F_WAITTIME 0x400000 14710962Speter 14812174Speter/* 14910015Speter * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum 15010015Speter * number of received sequence numbers we can keep track of. Change 128 15110015Speter * to 8192 for complete accuracy... 15210044Speter */ 15310044Speter#define MAX_DUP_CHK (8 * 128) 15410044Speterint mx_dup_ck = MAX_DUP_CHK; 15510044Speterchar rcvd_tbl[MAX_DUP_CHK / 8]; 15610044Speter 15710044Speterstruct sockaddr_in whereto; /* who to ping */ 15810044Speterint datalen = DEFDATALEN; 15910044Speterint maxpayload; 16010044Speterint s; /* socket file descriptor */ 16110044Speteru_char outpackhdr[IP_MAXPACKET], *outpack; 16210044Speterchar BBELL = '\a'; /* characters written for MISSED and AUDIBLE */ 16310044Speterchar BSPACE = '\b'; /* characters written for flood */ 16412675Sjulianchar DOT = '.'; 16512675Sjulianchar *hostname; 16612675Sjulianchar *shostname; 16712826Speterint ident; /* process id to identify our packets */ 16812675Sjulianint uid; /* cached uid for micro-optimization */ 16912675Sjulianu_char icmp_type = ICMP_ECHO; 17012675Sjulianu_char icmp_type_rsp = ICMP_ECHOREPLY; 17113165Speterint phdr_len = 0; 17212675Sjulianint send_len; 17310044Speter 17412724Sphk/* counters */ 17510044Speterlong nmissedmax; /* max value of ntransmitted - nreceived - 1 */ 17612174Speterlong npackets; /* max packets to transmit */ 17710015Speterlong nreceived; /* # of packets we got back */ 17810015Speterlong nrepeats; /* number of duplicates */ 17910015Speterlong ntransmitted; /* sequence # for outbound packets = #sent */ 18010015Speterlong snpackets; /* max packets to transmit in one sweep */ 18110015Speterlong snreceived; /* # of packets we got back in this sweep */ 18210015Speterlong sntransmitted; /* # of packets we sent in this sweep */ 18310015Speterint sweepmax; /* max value of payload in sweep */ 18410015Speterint sweepmin = 0; /* start value of payload in sweep */ 18510015Speterint sweepincr = 1; /* payload increment in sweep */ 18610015Speterint interval = 1000; /* interval between packets, ms */ 18710015Speterint waittime = MAXWAIT; /* timeout for each packet */ 18810015Speterlong nrcvtimeout = 0; /* # of packets we got back after waittime */ 18910015Speter 19010015Speter/* timing */ 19110015Speterint timing; /* flag to do timing */ 19210015Speterdouble tmin = 999999999.0; /* minimum round trip time */ 19310015Speterdouble tmax = 0.0; /* maximum round trip time */ 19410015Speterdouble tsum = 0.0; /* sum of all times, for doing average */ 19510015Speterdouble tsumsq = 0.0; /* sum of all times squared, for std. dev. */ 19610015Speter 19710015Spetervolatile sig_atomic_t finish_up; /* nonzero if we've been told to finish up */ 19810015Spetervolatile sig_atomic_t siginfo_p; 19910015Speter 20010015Speterstatic void fill(char *, char *); 20110015Speterstatic u_short in_cksum(u_short *, int); 20210015Speterstatic void check_status(void); 20310015Speterstatic void finish(void) __dead2; 20410015Speterstatic void pinger(void); 20510015Speterstatic char *pr_addr(struct in_addr); 20610015Speterstatic char *pr_ntime(n_time); 20710015Speterstatic void pr_icmph(struct icmp *); 20810015Speterstatic void pr_iph(struct ip *); 20910015Speterstatic void pr_pack(char *, int, struct sockaddr_in *, struct timeval *); 21010015Speterstatic void pr_retip(struct ip *); 21110015Speterstatic void status(int); 21210015Speterstatic void stopit(int); 21310015Speterstatic void tvsub(struct timeval *, struct timeval *); 21410015Speterstatic void usage(void) __dead2; 21510015Speter 21610015Speterint 21710015Spetermain(argc, argv) 21810015Speter int argc; 21910015Speter char *const *argv; 22010047Speter{ 22110047Speter struct sockaddr_in from, sock_in; 22210047Speter struct in_addr ifaddr; 22310047Speter struct timeval last, intvl; 22410047Speter struct iovec iov; 22510047Speter struct ip *ip; 22610047Speter struct msghdr msg; 22710047Speter struct sigaction si_sa; 22810047Speter size_t sz; 22910047Speter u_char *datap, packet[IP_MAXPACKET]; 23010015Speter char *ep, *source, *target, *payload; 23115683Speter struct hostent *hp; 23217547Speter#ifdef IPSEC_POLICY_IPSEC 23315639Speter char *policy_in, *policy_out; 23416403Speter#endif 23517547Speter struct sockaddr_in *to; 23615639Speter double t; 23710015Speter u_long alarmtimeout, ultmp; 23810015Speter int almost_done, ch, df, hold, i, icmp_len, mib[4], preload, sockerrno, 23910015Speter tos, ttl; 24010015Speter char ctrl[CMSG_SPACE(sizeof(struct timeval))]; 24110015Speter char hnamebuf[MAXHOSTNAMELEN], snamebuf[MAXHOSTNAMELEN]; 24210015Speter#ifdef IP_OPTIONS 24310015Speter char rspace[MAX_IPOPTLEN]; /* record route space */ 24410015Speter#endif 24510015Speter unsigned char loop, mttl; 24610015Speter 24710015Speter payload = source = NULL; 24810015Speter#ifdef IPSEC_POLICY_IPSEC 24910015Speter policy_in = policy_out = NULL; 25010015Speter#endif 25110015Speter 25210015Speter /* 25310015Speter * Do the stuff that we need root priv's for *first*, and 25412724Sphk * then drop our setuid bit. Save error reporting for 25510015Speter * after arg parsing. 25610015Speter */ 25710015Speter s = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP); 25810015Speter sockerrno = errno; 25910015Speter 26010015Speter setuid(getuid()); 26110015Speter uid = getuid(); 26210015Speter 26310015Speter alarmtimeout = df = preload = tos = 0; 26410015Speter 26517547Speter outpack = outpackhdr + sizeof(struct ip); 26617547Speter while ((ch = getopt(argc, argv, 26717547Speter "Aac:DdfG:g:h:I:i:Ll:M:m:nop:QqRrS:s:T:t:vW:z:" 26817547Speter#ifdef IPSEC 26915683Speter#ifdef IPSEC_POLICY_IPSEC 27010015Speter "P:" 27110015Speter#endif /*IPSEC_POLICY_IPSEC*/ 27210015Speter#endif /*IPSEC*/ 27312496Speter )) != -1) 27412496Speter { 27510015Speter switch(ch) { 27610015Speter case 'A': 27710015Speter options |= F_MISSED; 27810015Speter break; 27910015Speter case 'a': 28010015Speter options |= F_AUDIBLE; 28110015Speter break; 28212174Speter case 'c': 28312174Speter ultmp = strtoul(optarg, &ep, 0); 28410015Speter if (*ep || ep == optarg || ultmp > LONG_MAX || !ultmp) 28510015Speter errx(EX_USAGE, 28610015Speter "invalid count of packets to transmit: `%s'", 28710015Speter optarg); 28810015Speter npackets = ultmp; 28910015Speter break; 29010015Speter case 'D': 29110015Speter options |= F_HDRINCL; 29210015Speter df = 1; 29310015Speter break; 29410015Speter case 'd': 29510015Speter options |= F_SO_DEBUG; 29610015Speter break; 29710015Speter case 'f': 29810015Speter if (uid) { 29910015Speter errno = EPERM; 30010015Speter err(EX_NOPERM, "-f flag"); 30110015Speter } 30210015Speter options |= F_FLOOD; 30310015Speter setbuf(stdout, (char *)NULL); 30410015Speter break; 30510015Speter case 'G': /* Maximum packet size for ping sweep */ 30610015Speter ultmp = strtoul(optarg, &ep, 0); 30710015Speter if (*ep || ep == optarg) 30810015Speter errx(EX_USAGE, "invalid packet size: `%s'", 30910015Speter optarg); 31010015Speter if (uid != 0 && ultmp > DEFDATALEN) { 31110015Speter errno = EPERM; 31210015Speter err(EX_NOPERM, 31310015Speter "packet size too large: %lu > %u", 31410015Speter ultmp, DEFDATALEN); 31510015Speter } 31610015Speter options |= F_SWEEP; 31710015Speter sweepmax = ultmp; 31810015Speter break; 31910015Speter case 'g': /* Minimum packet size for ping sweep */ 32010015Speter ultmp = strtoul(optarg, &ep, 0); 32110015Speter if (*ep || ep == optarg) 32210015Speter errx(EX_USAGE, "invalid packet size: `%s'", 32310015Speter optarg); 32410015Speter if (uid != 0 && ultmp > DEFDATALEN) { 32512496Speter errno = EPERM; 32610015Speter err(EX_NOPERM, 32710015Speter "packet size too large: %lu > %u", 32810015Speter ultmp, DEFDATALEN); 32910015Speter } 33010015Speter options |= F_SWEEP; 33110015Speter sweepmin = ultmp; 33210015Speter break; 33310015Speter case 'h': /* Packet size increment for ping sweep */ 33410015Speter ultmp = strtoul(optarg, &ep, 0); 33510015Speter if (*ep || ep == optarg || ultmp < 1) 33610015Speter errx(EX_USAGE, "invalid increment size: `%s'", 33710015Speter optarg); 33810015Speter if (uid != 0 && ultmp > DEFDATALEN) { 33910015Speter errno = EPERM; 34010015Speter err(EX_NOPERM, 34110015Speter "packet size too large: %lu > %u", 34210015Speter ultmp, DEFDATALEN); 34310015Speter } 34410015Speter options |= F_SWEEP; 34510015Speter sweepincr = ultmp; 34610015Speter break; 34710015Speter case 'I': /* multicast interface */ 34810015Speter if (inet_aton(optarg, &ifaddr) == 0) 34910015Speter errx(EX_USAGE, 35010015Speter "invalid multicast interface: `%s'", 35110015Speter optarg); 35210015Speter options |= F_MIF; 35310015Speter break; 35410015Speter case 'i': /* wait between sending packets */ 35510015Speter t = strtod(optarg, &ep) * 1000.0; 35610015Speter if (*ep || ep == optarg || t > (double)INT_MAX) 35710015Speter errx(EX_USAGE, "invalid timing interval: `%s'", 35810015Speter optarg); 35910015Speter options |= F_INTERVAL; 36010015Speter interval = (int)t; 36110015Speter if (uid && interval < 1000) { 36210015Speter errno = EPERM; 36310015Speter err(EX_NOPERM, "-i interval too short"); 36410015Speter } 36510015Speter break; 36610015Speter case 'L': 36710015Speter options |= F_NOLOOP; 36810015Speter loop = 0; 36910015Speter break; 37010015Speter case 'l': 37110015Speter ultmp = strtoul(optarg, &ep, 0); 37210015Speter if (*ep || ep == optarg || ultmp > INT_MAX) 37310015Speter errx(EX_USAGE, 37410015Speter "invalid preload value: `%s'", optarg); 37510015Speter if (uid) { 37610015Speter errno = EPERM; 37710015Speter err(EX_NOPERM, "-l flag"); 37810015Speter } 37910015Speter preload = ultmp; 38010015Speter break; 38110015Speter case 'M': 38210015Speter switch(optarg[0]) { 38310015Speter case 'M': 38410015Speter case 'm': 38510015Speter options |= F_MASK; 38610015Speter break; 38710015Speter case 'T': 38810015Speter case 't': 38910015Speter options |= F_TIME; 39010015Speter break; 39112496Speter default: 39212496Speter errx(EX_USAGE, "invalid message: `%c'", optarg[0]); 39310015Speter break; 39418515Speter } 39510015Speter break; 39610015Speter case 'm': /* TTL */ 39718515Speter ultmp = strtoul(optarg, &ep, 0); 39810015Speter if (*ep || ep == optarg || ultmp > MAXTTL) 39910015Speter errx(EX_USAGE, "invalid TTL: `%s'", optarg); 40010015Speter ttl = ultmp; 40112174Speter options |= F_TTL; 40210015Speter break; 40310015Speter case 'n': 40410015Speter options |= F_NUMERIC; 40510015Speter break; 40610015Speter case 'o': 40710015Speter options |= F_ONCE; 40818515Speter break; 40910015Speter#ifdef IPSEC 41010015Speter#ifdef IPSEC_POLICY_IPSEC 41118515Speter case 'P': 41210015Speter options |= F_POLICY; 41310015Speter if (!strncmp("in", optarg, 2)) 41410015Speter policy_in = strdup(optarg); 41512174Speter else if (!strncmp("out", optarg, 3)) 41610015Speter policy_out = strdup(optarg); 41710015Speter else 41810015Speter errx(1, "invalid security policy"); 41910015Speter break; 42010015Speter#endif /*IPSEC_POLICY_IPSEC*/ 42110015Speter#endif /*IPSEC*/ 42210015Speter case 'p': /* fill buffer with user pattern */ 42310015Speter options |= F_PINGFILLED; 42410015Speter payload = optarg; 42510015Speter break; 42610015Speter case 'Q': 42710015Speter options |= F_QUIET2; 42810015Speter break; 42910015Speter case 'q': 43010015Speter options |= F_QUIET; 43110015Speter break; 43210015Speter case 'R': 43310015Speter options |= F_RROUTE; 43410015Speter break; 43510015Speter case 'r': 43610015Speter options |= F_SO_DONTROUTE; 43710015Speter break; 43810015Speter case 'S': 43910015Speter source = optarg; 44010015Speter break; 44110015Speter case 's': /* size of packet to send */ 44210015Speter ultmp = strtoul(optarg, &ep, 0); 44310015Speter if (*ep || ep == optarg) 44410015Speter errx(EX_USAGE, "invalid packet size: `%s'", 44510015Speter optarg); 44610015Speter if (uid != 0 && ultmp > DEFDATALEN) { 44710015Speter errno = EPERM; 44810015Speter err(EX_NOPERM, 44910015Speter "packet size too large: %lu > %u", 45010015Speter ultmp, DEFDATALEN); 45110015Speter } 45210015Speter datalen = ultmp; 45310015Speter break; 45410015Speter case 'T': /* multicast TTL */ 45510015Speter ultmp = strtoul(optarg, &ep, 0); 45610015Speter if (*ep || ep == optarg || ultmp > MAXTTL) 45710015Speter errx(EX_USAGE, "invalid multicast TTL: `%s'", 45812724Sphk optarg); 45910015Speter mttl = ultmp; 46010015Speter options |= F_MTTL; 46110015Speter break; 46210015Speter case 't': 46310015Speter alarmtimeout = strtoul(optarg, &ep, 0); 46410015Speter if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX)) 46510015Speter errx(EX_USAGE, "invalid timeout: `%s'", 46610015Speter optarg); 46710015Speter if (alarmtimeout > MAXALARM) 46810015Speter errx(EX_USAGE, "invalid timeout: `%s' > %d", 46910015Speter optarg, MAXALARM); 47010015Speter alarm((int)alarmtimeout); 47110015Speter break; 47212174Speter case 'v': 47310015Speter options |= F_VERBOSE; 47412496Speter break; 47510015Speter case 'W': /* wait ms for answer */ 47610015Speter t = strtod(optarg, &ep); 47710015Speter if (*ep || ep == optarg || t > (double)INT_MAX) 47810015Speter errx(EX_USAGE, "invalid timing interval: `%s'", 47910015Speter optarg); 48010015Speter options |= F_WAITTIME; 48110015Speter waittime = (int)t; 48210015Speter break; 48310015Speter case 'z': 48410015Speter options |= F_HDRINCL; 48510015Speter ultmp = strtoul(optarg, &ep, 0); 48610015Speter if (*ep || ep == optarg || ultmp > MAXTOS) 48710015Speter errx(EX_USAGE, "invalid TOS: `%s'", optarg); 48812496Speter tos = ultmp; 48912496Speter break; 49010015Speter default: 49110015Speter usage(); 49210015Speter } 49310015Speter } 49410015Speter 49510015Speter if (argc - optind != 1) 49610015Speter usage(); 49710015Speter target = argv[optind]; 49810015Speter 49910015Speter switch (options & (F_MASK|F_TIME)) { 50010015Speter case 0: break; 50110015Speter case F_MASK: 50212174Speter icmp_type = ICMP_MASKREQ; 50312174Speter icmp_type_rsp = ICMP_MASKREPLY; 50412174Speter phdr_len = MASK_LEN; 50512174Speter if (!(options & F_QUIET)) 50610015Speter (void)printf("ICMP_MASKREQ\n"); 50710015Speter break; 50810015Speter case F_TIME: 50910015Speter icmp_type = ICMP_TSTAMP; 51010015Speter icmp_type_rsp = ICMP_TSTAMPREPLY; 51110015Speter phdr_len = TS_LEN; 51210015Speter if (!(options & F_QUIET)) 51310015Speter (void)printf("ICMP_TSTAMP\n"); 51410015Speter break; 51510015Speter default: 51610015Speter errx(EX_USAGE, "ICMP_TSTAMP and ICMP_MASKREQ are exclusive."); 51710015Speter break; 51810015Speter } 51910015Speter icmp_len = sizeof(struct ip) + ICMP_MINLEN + phdr_len; 52010015Speter if (options & F_RROUTE) 52110015Speter icmp_len += MAX_IPOPTLEN; 52210015Speter maxpayload = IP_MAXPACKET - icmp_len; 52310015Speter if (datalen > maxpayload) 52410015Speter errx(EX_USAGE, "packet size too large: %d > %d", datalen, 52510015Speter maxpayload); 52610015Speter send_len = icmp_len + datalen; 52710015Speter datap = &outpack[ICMP_MINLEN + phdr_len + TIMEVAL_LEN]; 52810015Speter if (options & F_PINGFILLED) { 52910015Speter fill((char *)datap, payload); 53010015Speter } 53110015Speter if (source) { 53210015Speter bzero((char *)&sock_in, sizeof(sock_in)); 53310015Speter sock_in.sin_family = AF_INET; 53410015Speter if (inet_aton(source, &sock_in.sin_addr) != 0) { 53510015Speter shostname = source; 53610015Speter } else { 53710015Speter hp = gethostbyname2(source, AF_INET); 53810015Speter if (!hp) 53912174Speter errx(EX_NOHOST, "cannot resolve %s: %s", 54010015Speter source, hstrerror(h_errno)); 54110015Speter 54212174Speter sock_in.sin_len = sizeof sock_in; 54315639Speter if ((unsigned)hp->h_length > sizeof(sock_in.sin_addr) || 54410015Speter hp->h_length < 0) 54515639Speter errx(1, "gethostbyname2: illegal address"); 54610015Speter memcpy(&sock_in.sin_addr, hp->h_addr_list[0], 54710015Speter sizeof(sock_in.sin_addr)); 54810015Speter (void)strncpy(snamebuf, hp->h_name, 54910015Speter sizeof(snamebuf) - 1); 55010015Speter snamebuf[sizeof(snamebuf) - 1] = '\0'; 55110015Speter shostname = snamebuf; 55210015Speter } 55310015Speter if (bind(s, (struct sockaddr *)&sock_in, sizeof sock_in) == -1) 55410015Speter err(1, "bind"); 55510015Speter } 55610015Speter 55710015Speter bzero(&whereto, sizeof(whereto)); 55810015Speter to = &whereto; 55910015Speter to->sin_family = AF_INET; 56010015Speter to->sin_len = sizeof *to; 56110015Speter if (inet_aton(target, &to->sin_addr) != 0) { 56210015Speter hostname = target; 56310015Speter } else { 56410015Speter hp = gethostbyname2(target, AF_INET); 56510015Speter if (!hp) 56610015Speter errx(EX_NOHOST, "cannot resolve %s: %s", 56710015Speter target, hstrerror(h_errno)); 56810015Speter 56912174Speter if ((unsigned)hp->h_length > sizeof(to->sin_addr)) 57010015Speter errx(1, "gethostbyname2 returned an illegal address"); 57110015Speter memcpy(&to->sin_addr, hp->h_addr_list[0], sizeof to->sin_addr); 57210015Speter (void)strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1); 57310015Speter hnamebuf[sizeof(hnamebuf) - 1] = '\0'; 57412174Speter hostname = hnamebuf; 57510015Speter } 57610015Speter 57710015Speter if (options & F_FLOOD && options & F_INTERVAL) 57810015Speter errx(EX_USAGE, "-f and -i: incompatible options"); 57910015Speter 58010015Speter if (options & F_FLOOD && IN_MULTICAST(ntohl(to->sin_addr.s_addr))) 58110015Speter errx(EX_USAGE, 58210015Speter "-f flag cannot be used with multicast destination"); 58310015Speter if (options & (F_MIF | F_NOLOOP | F_MTTL) 58410015Speter && !IN_MULTICAST(ntohl(to->sin_addr.s_addr))) 58510015Speter errx(EX_USAGE, 58610015Speter "-I, -L, -T flags cannot be used with unicast destination"); 58710015Speter 58810015Speter if (datalen >= TIMEVAL_LEN) /* can we time transfer */ 58910015Speter timing = 1; 59010015Speter 59110015Speter if (!(options & F_PINGFILLED)) 59210015Speter for (i = TIMEVAL_LEN; i < datalen; ++i) 59310015Speter *datap++ = i; 59410015Speter 59510015Speter ident = getpid() & 0xFFFF; 59610015Speter 59710015Speter if (s < 0) { 59810015Speter errno = sockerrno; 59910015Speter err(EX_OSERR, "socket"); 60010015Speter } 60110015Speter hold = 1; 60210015Speter if (options & F_SO_DEBUG) 60310015Speter (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold, 60410015Speter sizeof(hold)); 60510015Speter if (options & F_SO_DONTROUTE) 60610015Speter (void)setsockopt(s, SOL_SOCKET, SO_DONTROUTE, (char *)&hold, 60710015Speter sizeof(hold)); 60810015Speter#ifdef IPSEC 60910015Speter#ifdef IPSEC_POLICY_IPSEC 61010015Speter if (options & F_POLICY) { 61110015Speter char *buf; 61210015Speter if (policy_in != NULL) { 61310015Speter buf = ipsec_set_policy(policy_in, strlen(policy_in)); 61410015Speter if (buf == NULL) 61510015Speter errx(EX_CONFIG, "%s", ipsec_strerror()); 61610962Speter if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY, 61710015Speter buf, ipsec_get_policylen(buf)) < 0) 61810015Speter err(EX_CONFIG, 61910015Speter "ipsec policy cannot be configured"); 62010015Speter free(buf); 62110015Speter } 62210015Speter 62310015Speter if (policy_out != NULL) { 62412174Speter buf = ipsec_set_policy(policy_out, strlen(policy_out)); 62510015Speter if (buf == NULL) 62610015Speter errx(EX_CONFIG, "%s", ipsec_strerror()); 62710015Speter if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY, 62810015Speter buf, ipsec_get_policylen(buf)) < 0) 62910015Speter err(EX_CONFIG, 63010015Speter "ipsec policy cannot be configured"); 63110015Speter free(buf); 63212174Speter } 63312174Speter } 63410015Speter#endif /*IPSEC_POLICY_IPSEC*/ 63510015Speter#endif /*IPSEC*/ 63610015Speter 63710015Speter if (options & F_HDRINCL) { 63810015Speter ip = (struct ip*)outpackhdr; 63910015Speter if (!(options & (F_TTL | F_MTTL))) { 64010047Speter mib[0] = CTL_NET; 64110047Speter mib[1] = PF_INET; 64210047Speter mib[2] = IPPROTO_IP; 64310047Speter mib[3] = IPCTL_DEFTTL; 64410015Speter sz = sizeof(ttl); 64510015Speter if (sysctl(mib, 4, &ttl, &sz, NULL, 0) == -1) 64610047Speter err(1, "sysctl(net.inet.ip.ttl)"); 64710015Speter } 64810015Speter setsockopt(s, IPPROTO_IP, IP_HDRINCL, &hold, sizeof(hold)); 64910015Speter ip->ip_v = IPVERSION; 65010015Speter ip->ip_hl = sizeof(struct ip) >> 2; 65110015Speter ip->ip_tos = tos; 65210015Speter ip->ip_id = 0; 65310015Speter ip->ip_off = df ? IP_DF : 0; 65412174Speter ip->ip_ttl = ttl; 65510015Speter ip->ip_p = IPPROTO_ICMP; 65610015Speter ip->ip_src.s_addr = source ? sock_in.sin_addr.s_addr : INADDR_ANY; 65710015Speter ip->ip_dst = to->sin_addr; 65812174Speter } 65912174Speter /* record route option */ 66010015Speter if (options & F_RROUTE) { 66110015Speter#ifdef IP_OPTIONS 66210015Speter bzero(rspace, sizeof(rspace)); 66310015Speter rspace[IPOPT_OPTVAL] = IPOPT_RR; 66410015Speter rspace[IPOPT_OLEN] = sizeof(rspace) - 1; 66510015Speter rspace[IPOPT_OFFSET] = IPOPT_MINOFF; 66610015Speter rspace[sizeof(rspace) - 1] = IPOPT_EOL; 66710015Speter if (setsockopt(s, IPPROTO_IP, IP_OPTIONS, rspace, 66810015Speter sizeof(rspace)) < 0) 66910015Speter err(EX_OSERR, "setsockopt IP_OPTIONS"); 67010015Speter#else 67110015Speter errx(EX_UNAVAILABLE, 67212502Sjulian "record route not available in this implementation"); 67312675Sjulian#endif /* IP_OPTIONS */ 67412675Sjulian } 67513169Speter 67613165Speter if (options & F_TTL) { 67713630Sphk if (setsockopt(s, IPPROTO_IP, IP_TTL, &ttl, 67813630Sphk sizeof(ttl)) < 0) { 67913630Sphk err(EX_OSERR, "setsockopt IP_TTL"); 68013630Sphk } 68113630Sphk } 68213630Sphk if (options & F_NOLOOP) { 68313630Sphk if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, 68413630Sphk sizeof(loop)) < 0) { 68513630Sphk err(EX_OSERR, "setsockopt IP_MULTICAST_LOOP"); 68613630Sphk } 68713630Sphk } 68813630Sphk if (options & F_MTTL) { 68912675Sjulian if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &mttl, 69014873Sscrappy sizeof(mttl)) < 0) { 69114873Sscrappy err(EX_OSERR, "setsockopt IP_MULTICAST_TTL"); 69214873Sscrappy } 69312675Sjulian } 69410015Speter if (options & F_MIF) { 69510015Speter if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF, &ifaddr, 69610015Speter sizeof(ifaddr)) < 0) { 69712675Sjulian err(EX_OSERR, "setsockopt IP_MULTICAST_IF"); 69810015Speter } 69910015Speter } 70010015Speter#ifdef SO_TIMESTAMP 70110015Speter { int on = 1; 70210015Speter if (setsockopt(s, SOL_SOCKET, SO_TIMESTAMP, &on, sizeof(on)) < 0) 70310015Speter err(EX_OSERR, "setsockopt SO_TIMESTAMP"); 70410015Speter } 70510015Speter#endif 70610015Speter if (sweepmax) { 70710015Speter if (sweepmin >= sweepmax) 70810015Speter errx(EX_USAGE, "Maximum packet size must be greater than the minimum packet size"); 70910015Speter 71010015Speter if (datalen != DEFDATALEN) 71110015Speter errx(EX_USAGE, "Packet size and ping sweep are mutually exclusive"); 71210015Speter 71318515Speter if (npackets > 0) { 71410015Speter snpackets = npackets; 71510015Speter npackets = 0; 71610015Speter } else 71710015Speter snpackets = 1; 71810015Speter datalen = sweepmin; 71910015Speter send_len = icmp_len + sweepmin; 72010015Speter } 72110015Speter if (options & F_SWEEP && !sweepmax) 72210015Speter errx(EX_USAGE, "Maximum sweep size must be specified"); 72312174Speter 72412174Speter /* 72510015Speter * When pinging the broadcast address, you can get a lot of answers. 72610015Speter * Doing something so evil is useful if you are trying to stress the 72710015Speter * ethernet, or just want to fill the arp cache to get some stuff for 72810015Speter * /etc/ethers. But beware: RFC 1122 allows hosts to ignore broadcast 72910015Speter * or multicast pings if they wish. 73010015Speter */ 73112174Speter 73210015Speter /* 73310015Speter * XXX receive buffer needs undetermined space for mbuf overhead 73410015Speter * as well. 73510015Speter */ 73610015Speter hold = IP_MAXPACKET + 128; 73710015Speter (void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold, 73810015Speter sizeof(hold)); 73910015Speter if (uid == 0) 74010015Speter (void)setsockopt(s, SOL_SOCKET, SO_SNDBUF, (char *)&hold, 74115639Speter sizeof(hold)); 74210015Speter 74310015Speter if (to->sin_family == AF_INET) { 74410015Speter (void)printf("PING %s (%s)", hostname, 74510015Speter inet_ntoa(to->sin_addr)); 74610015Speter if (source) 74710015Speter (void)printf(" from %s", shostname); 74810015Speter if (sweepmax) 74910015Speter (void)printf(": (%d ... %d) data bytes\n", 75010015Speter sweepmin, sweepmax); 75110015Speter else 75210015Speter (void)printf(": %d data bytes\n", datalen); 75310015Speter 75410015Speter } else { 75510015Speter if (sweepmax) 75610015Speter (void)printf("PING %s: (%d ... %d) data bytes\n", 75710015Speter hostname, sweepmin, sweepmax); 75810015Speter else 75910015Speter (void)printf("PING %s: %d data bytes\n", hostname, datalen); 76010015Speter } 76110015Speter 76210015Speter /* 76310015Speter * Use sigaction() instead of signal() to get unambiguous semantics, 76410015Speter * in particular with SA_RESTART not set. 76510015Speter */ 76610015Speter 76710015Speter sigemptyset(&si_sa.sa_mask); 76810015Speter si_sa.sa_flags = 0; 76910015Speter 77010015Speter si_sa.sa_handler = stopit; 77110015Speter if (sigaction(SIGINT, &si_sa, 0) == -1) { 77210015Speter err(EX_OSERR, "sigaction SIGINT"); 77310015Speter } 77410015Speter 77510015Speter si_sa.sa_handler = status; 77610015Speter if (sigaction(SIGINFO, &si_sa, 0) == -1) { 77710015Speter err(EX_OSERR, "sigaction"); 77810015Speter } 77910015Speter 78010015Speter if (alarmtimeout > 0) { 78110015Speter si_sa.sa_handler = stopit; 78210015Speter if (sigaction(SIGALRM, &si_sa, 0) == -1) 78310015Speter err(EX_OSERR, "sigaction SIGALRM"); 78410015Speter } 78510015Speter 78610015Speter bzero(&msg, sizeof(msg)); 78710015Speter msg.msg_name = (caddr_t)&from; 78810015Speter msg.msg_iov = &iov; 78910015Speter msg.msg_iovlen = 1; 79010015Speter#ifdef SO_TIMESTAMP 79110015Speter msg.msg_control = (caddr_t)ctrl; 79210015Speter#endif 79310015Speter iov.iov_base = packet; 79410015Speter iov.iov_len = IP_MAXPACKET; 79510015Speter 79610015Speter if (preload == 0) 79710015Speter pinger(); /* send the first ping */ 79810015Speter else { 79910015Speter if (npackets != 0 && preload > npackets) 80010015Speter preload = npackets; 80110015Speter while (preload--) /* fire off them quickies */ 80210015Speter pinger(); 80310015Speter } 80410015Speter (void)gettimeofday(&last, NULL); 80510015Speter 80610015Speter if (options & F_FLOOD) { 80710015Speter intvl.tv_sec = 0; 80810015Speter intvl.tv_usec = 10000; 80910015Speter } else { 81010015Speter intvl.tv_sec = interval / 1000; 81110015Speter intvl.tv_usec = interval % 1000 * 1000; 81210015Speter } 81310015Speter 81410015Speter almost_done = 0; 81510015Speter while (!finish_up) { 81610015Speter struct timeval now, timeout; 81710015Speter fd_set rfds; 81810015Speter int cc, n; 81910015Speter 82010015Speter check_status(); 82110015Speter if ((unsigned)s >= FD_SETSIZE) 82210015Speter errx(EX_OSERR, "descriptor too large"); 82310015Speter FD_ZERO(&rfds); 82410015Speter FD_SET(s, &rfds); 82510015Speter (void)gettimeofday(&now, NULL); 82610015Speter timeout.tv_sec = last.tv_sec + intvl.tv_sec - now.tv_sec; 82710015Speter timeout.tv_usec = last.tv_usec + intvl.tv_usec - now.tv_usec; 82810015Speter while (timeout.tv_usec < 0) { 82910015Speter timeout.tv_usec += 1000000; 83010015Speter timeout.tv_sec--; 83110015Speter } 83210015Speter while (timeout.tv_usec >= 1000000) { 83310015Speter timeout.tv_usec -= 1000000; 83410015Speter timeout.tv_sec++; 83510015Speter } 83610015Speter if (timeout.tv_sec < 0) 83710015Speter timeout.tv_sec = timeout.tv_usec = 0; 83810015Speter n = select(s + 1, &rfds, NULL, NULL, &timeout); 83910015Speter if (n < 0) 84010015Speter continue; /* Must be EINTR. */ 84110015Speter if (n == 1) { 84210015Speter struct timeval *tv = NULL; 84310015Speter#ifdef SO_TIMESTAMP 84410015Speter struct cmsghdr *cmsg = (struct cmsghdr *)&ctrl; 84510015Speter 84610015Speter msg.msg_controllen = sizeof(ctrl); 84710015Speter#endif 84810015Speter msg.msg_namelen = sizeof(from); 84910015Speter if ((cc = recvmsg(s, &msg, 0)) < 0) { 85010015Speter if (errno == EINTR) 85110015Speter continue; 85210015Speter warn("recvmsg"); 85310015Speter continue; 85410015Speter } 85510015Speter#ifdef SO_TIMESTAMP 85610015Speter if (cmsg->cmsg_level == SOL_SOCKET && 85710015Speter cmsg->cmsg_type == SCM_TIMESTAMP && 85810015Speter cmsg->cmsg_len == CMSG_LEN(sizeof *tv)) { 85910015Speter /* Copy to avoid alignment problems: */ 86010015Speter memcpy(&now, CMSG_DATA(cmsg), sizeof(now)); 86110015Speter tv = &now; 86210015Speter } 86310015Speter#endif 86410015Speter if (tv == NULL) { 86510015Speter (void)gettimeofday(&now, NULL); 86610015Speter tv = &now; 86710015Speter } 86812675Sjulian pr_pack((char *)packet, cc, &from, tv); 86910015Speter if ((options & F_ONCE && nreceived) || 87010015Speter (npackets && nreceived >= npackets)) 87110015Speter break; 87210015Speter } 87310015Speter if (n == 0 || options & F_FLOOD) { 87410015Speter if (sweepmax && sntransmitted == snpackets) { 87510015Speter for (i = 0; i < sweepincr ; ++i) 87610015Speter *datap++ = i; 87710015Speter datalen += sweepincr; 87810015Speter if (datalen > sweepmax) 87910015Speter break; 88010015Speter send_len = icmp_len + datalen; 88110015Speter sntransmitted = 0; 88210015Speter } 88310015Speter if (!npackets || ntransmitted < npackets) 88410015Speter pinger(); 88510015Speter else { 88610015Speter if (almost_done) 88710015Speter break; 88810015Speter almost_done = 1; 88910015Speter intvl.tv_usec = 0; 89010015Speter if (nreceived) { 89110015Speter intvl.tv_sec = 2 * tmax / 1000; 89210015Speter if (!intvl.tv_sec) 89310015Speter intvl.tv_sec = 1; 89410015Speter } else { 89510015Speter intvl.tv_sec = waittime / 1000; 89610015Speter intvl.tv_usec = waittime % 1000 * 1000; 89710015Speter } 89810015Speter } 89910015Speter (void)gettimeofday(&last, NULL); 90010015Speter if (ntransmitted - nreceived - 1 > nmissedmax) { 90110015Speter nmissedmax = ntransmitted - nreceived - 1; 90210015Speter if (options & F_MISSED) 90310015Speter (void)write(STDOUT_FILENO, &BBELL, 1); 90410015Speter } 90510015Speter } 90610015Speter } 90710015Speter finish(); 90810015Speter /* NOTREACHED */ 90910015Speter exit(0); /* Make the compiler happy */ 91010015Speter} 91110015Speter 91210015Speter/* 91310015Speter * stopit -- 91410015Speter * Set the global bit that causes the main loop to quit. 91510015Speter * Do NOT call finish() from here, since finish() does far too much 91610015Speter * to be called from a signal handler. 91710015Speter */ 91810015Spetervoid 91910015Speterstopit(sig) 92010015Speter int sig __unused; 92110015Speter{ 92210015Speter 92310015Speter /* 92410015Speter * When doing reverse DNS lookups, the finish_up flag might not 92510015Speter * be noticed for a while. Just exit if we get a second SIGINT. 92610015Speter */ 92710015Speter if (!(options & F_NUMERIC) && finish_up) 92810015Speter _exit(nreceived ? 0 : 2); 92910015Speter finish_up = 1; 93010015Speter} 93110015Speter 93210015Speter/* 93310015Speter * pinger -- 93410015Speter * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet 93510015Speter * will be added on by the kernel. The ID field is our UNIX process ID, 93610015Speter * and the sequence number is an ascending integer. The first TIMEVAL_LEN 93710015Speter * bytes of the data portion are used to hold a UNIX "timeval" struct in 93810015Speter * host byte-order, to compute the round-trip time. 93910015Speter */ 94010015Speterstatic void 94110015Speterpinger(void) 94210015Speter{ 94310015Speter struct timeval now; 94418515Speter struct tv32 tv32; 94518515Speter struct ip *ip; 94618515Speter struct icmp *icp; 94710015Speter int cc, i; 94810015Speter u_char *packet; 94910015Speter 95010015Speter packet = outpack; 95110015Speter icp = (struct icmp *)outpack; 95210015Speter icp->icmp_type = icmp_type; 95310015Speter icp->icmp_code = 0; 95410015Speter icp->icmp_cksum = 0; 95510015Speter icp->icmp_seq = htons(ntransmitted); 95610015Speter icp->icmp_id = ident; /* ID */ 95710015Speter 95810015Speter CLR(ntransmitted % mx_dup_ck); 95910015Speter 96010015Speter if ((options & F_TIME) || timing) { 96110015Speter (void)gettimeofday(&now, NULL); 96210015Speter 96310015Speter tv32.tv32_sec = htonl(now.tv_sec); 96410015Speter tv32.tv32_usec = htonl(now.tv_usec); 96510015Speter if (options & F_TIME) 96610015Speter icp->icmp_otime = htonl((now.tv_sec % (24*60*60)) 96710015Speter * 1000 + now.tv_usec / 1000); 96810015Speter if (timing) 96910015Speter bcopy((void *)&tv32, 97010015Speter (void *)&outpack[ICMP_MINLEN + phdr_len], 97110015Speter sizeof(tv32)); 97210015Speter } 97310015Speter 97410015Speter cc = ICMP_MINLEN + phdr_len + datalen; 97510015Speter 97610015Speter /* compute ICMP checksum here */ 97710015Speter icp->icmp_cksum = in_cksum((u_short *)icp, cc); 97810015Speter 97910015Speter if (options & F_HDRINCL) { 98010015Speter cc += sizeof(struct ip); 98110015Speter ip = (struct ip *)outpackhdr; 98210015Speter ip->ip_len = cc; 98310015Speter ip->ip_sum = in_cksum((u_short *)outpackhdr, cc); 98410015Speter packet = outpackhdr; 98510015Speter } 98610015Speter i = sendto(s, (char *)packet, cc, 0, (struct sockaddr *)&whereto, 98710015Speter sizeof(whereto)); 98812675Sjulian 98910015Speter if (i < 0 || i != cc) { 99010015Speter if (i < 0) { 99110015Speter if (options & F_FLOOD && errno == ENOBUFS) { 99210015Speter usleep(FLOOD_BACKOFF); 99310015Speter return; 99410015Speter } 99510015Speter warn("sendto"); 99610015Speter } else { 99710015Speter warn("%s: partial write: %d of %d bytes", 99810015Speter hostname, i, cc); 99910015Speter } 100010015Speter } 100110015Speter ntransmitted++; 100210015Speter sntransmitted++; 100310015Speter if (!(options & F_QUIET) && options & F_FLOOD) 100410015Speter (void)write(STDOUT_FILENO, &DOT, 1); 100510015Speter} 100610015Speter 100710015Speter/* 100812675Sjulian * pr_pack -- 100910015Speter * Print out the packet, if it came from us. This logic is necessary 101010015Speter * because ALL readers of the ICMP socket get a copy of ALL ICMP packets 101110015Speter * which arrive ('tis only fair). This permits multiple copies of this 101210015Speter * program to be run without having intermingled output (or statistics!). 101310015Speter */ 101410015Speterstatic void 101510015Speterpr_pack(buf, cc, from, tv) 101610015Speter char *buf; 101710015Speter int cc; 101810015Speter struct sockaddr_in *from; 101910015Speter struct timeval *tv; 102010015Speter{ 102110015Speter struct in_addr ina; 102210015Speter u_char *cp, *dp; 102310015Speter struct icmp *icp; 102410015Speter struct ip *ip; 102510015Speter const void *tp; 102610015Speter double triptime; 102710015Speter int dupflag, hlen, i, j, recv_len, seq; 102810015Speter static int old_rrlen; 102910015Speter static char old_rr[MAX_IPOPTLEN]; 103010015Speter 103110015Speter /* Check the IP header */ 103210015Speter ip = (struct ip *)buf; 103310015Speter hlen = ip->ip_hl << 2; 103410015Speter recv_len = cc; 103518515Speter if (cc < hlen + ICMP_MINLEN) { 103618515Speter if (options & F_VERBOSE) 103717291Speter warn("packet too short (%d bytes) from %s", cc, 103817290Speter inet_ntoa(from->sin_addr)); 103910015Speter return; 104017290Speter } 104110015Speter 104210015Speter /* Now the ICMP part */ 104310015Speter cc -= hlen; 104410015Speter icp = (struct icmp *)(buf + hlen); 104510015Speter if (icp->icmp_type == icmp_type_rsp) { 104610015Speter if (icp->icmp_id != ident) 104710015Speter return; /* 'Twas not our ECHO */ 104810015Speter ++nreceived; 104910015Speter triptime = 0.0; 105012675Sjulian if (timing) { 105110015Speter struct timeval tv1; 105210015Speter struct tv32 tv32; 105310015Speter#ifndef icmp_data 105410015Speter tp = &icp->icmp_ip; 105510015Speter#else 105610015Speter tp = icp->icmp_data; 105710015Speter#endif 105810015Speter tp = (const char *)tp + phdr_len; 105910015Speter 106010015Speter if (cc - ICMP_MINLEN - phdr_len >= sizeof(tv1)) { 106110015Speter /* Copy to avoid alignment problems: */ 106210015Speter memcpy(&tv32, tp, sizeof(tv32)); 106310015Speter tv1.tv_sec = ntohl(tv32.tv32_sec); 106410015Speter tv1.tv_usec = ntohl(tv32.tv32_usec); 106512675Sjulian tvsub(tv, &tv1); 106610015Speter triptime = ((double)tv->tv_sec) * 1000.0 + 106710015Speter ((double)tv->tv_usec) / 1000.0; 106810015Speter tsum += triptime; 106910015Speter tsumsq += triptime * triptime; 107010015Speter if (triptime < tmin) 107110015Speter tmin = triptime; 107210015Speter if (triptime > tmax) 107310015Speter tmax = triptime; 107410015Speter } else 107510015Speter timing = 0; 107610015Speter } 107710015Speter 107810015Speter seq = ntohs(icp->icmp_seq); 107910015Speter 108010015Speter if (TST(seq % mx_dup_ck)) { 108110015Speter ++nrepeats; 108210015Speter --nreceived; 108310015Speter dupflag = 1; 108410015Speter } else { 108510015Speter SET(seq % mx_dup_ck); 108610015Speter dupflag = 0; 108710015Speter } 108810015Speter 108910015Speter if (options & F_QUIET) 109010015Speter return; 109110015Speter 109210015Speter if (options & F_WAITTIME && triptime > waittime) { 109310015Speter ++nrcvtimeout; 109410015Speter return; 109510015Speter } 109610015Speter 109710015Speter if (options & F_FLOOD) 109810015Speter (void)write(STDOUT_FILENO, &BSPACE, 1); 109910015Speter else { 110016839Speter (void)printf("%d bytes from %s: icmp_seq=%u", cc, 110110015Speter inet_ntoa(*(struct in_addr *)&from->sin_addr.s_addr), 110210015Speter seq); 110310015Speter (void)printf(" ttl=%d", ip->ip_ttl); 110410015Speter if (timing) 110510015Speter (void)printf(" time=%.3f ms", triptime); 110610015Speter if (dupflag) 110710015Speter (void)printf(" (DUP!)"); 110810015Speter if (options & F_AUDIBLE) 110910015Speter (void)write(STDOUT_FILENO, &BBELL, 1); 111010015Speter if (options & F_MASK) { 111110015Speter /* Just prentend this cast isn't ugly */ 111210015Speter (void)printf(" mask=%s", 111310015Speter pr_addr(*(struct in_addr *)&(icp->icmp_mask))); 111410015Speter } 111510015Speter if (options & F_TIME) { 111610015Speter (void)printf(" tso=%s", pr_ntime(icp->icmp_otime)); 111710015Speter (void)printf(" tsr=%s", pr_ntime(icp->icmp_rtime)); 111810015Speter (void)printf(" tst=%s", pr_ntime(icp->icmp_ttime)); 111910015Speter } 112010015Speter if (recv_len != send_len) { 112110015Speter (void)printf( 112210015Speter "\nwrong total length %d instead of %d", 112310015Speter recv_len, send_len); 112410015Speter } 112510015Speter /* check the data */ 112610015Speter cp = (u_char*)&icp->icmp_data[phdr_len]; 112710015Speter dp = &outpack[ICMP_MINLEN + phdr_len]; 112810015Speter cc -= ICMP_MINLEN + phdr_len; 112910015Speter i = 0; 113010015Speter if (timing) { /* don't check variable timestamp */ 113110015Speter cp += TIMEVAL_LEN; 113210015Speter dp += TIMEVAL_LEN; 113310015Speter cc -= TIMEVAL_LEN; 113410015Speter i += TIMEVAL_LEN; 113510015Speter } 113610015Speter for (; i < datalen && cc > 0; ++i, ++cp, ++dp, --cc) { 113710015Speter if (*cp != *dp) { 113810015Speter (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", 113910015Speter i, *dp, *cp); 114010015Speter (void)printf("\ncp:"); 114110015Speter cp = (u_char*)&icp->icmp_data[0]; 114210015Speter for (i = 0; i < datalen; ++i, ++cp) { 114310015Speter if ((i % 16) == 8) 114410015Speter (void)printf("\n\t"); 114510015Speter (void)printf("%2x ", *cp); 114610015Speter } 114710015Speter (void)printf("\ndp:"); 114810015Speter cp = &outpack[ICMP_MINLEN]; 114910015Speter for (i = 0; i < datalen; ++i, ++cp) { 115010015Speter if ((i % 16) == 8) 115110015Speter (void)printf("\n\t"); 115210015Speter (void)printf("%2x ", *cp); 115310015Speter } 115410015Speter break; 115510015Speter } 115610015Speter } 115710015Speter } 115810015Speter } else { 115910015Speter /* 116010015Speter * We've got something other than an ECHOREPLY. 116110015Speter * See if it's a reply to something that we sent. 116210015Speter * We can compare IP destination, protocol, 116310015Speter * and ICMP type and ID. 116410015Speter * 116510015Speter * Only print all the error messages if we are running 116610015Speter * as root to avoid leaking information not normally 116710015Speter * available to those not running as root. 116810015Speter */ 116910015Speter#ifndef icmp_data 117017396Speter struct ip *oip = &icp->icmp_ip; 117117396Speter#else 117217396Speter struct ip *oip = (struct ip *)icp->icmp_data; 117317396Speter#endif 117410015Speter struct icmp *oicmp = (struct icmp *)(oip + 1); 117510015Speter 117610015Speter if (((options & F_VERBOSE) && uid == 0) || 117710015Speter (!(options & F_QUIET2) && 117810015Speter (oip->ip_dst.s_addr == whereto.sin_addr.s_addr) && 117910015Speter (oip->ip_p == IPPROTO_ICMP) && 118010015Speter (oicmp->icmp_type == ICMP_ECHO) && 118110015Speter (oicmp->icmp_id == ident))) { 118210015Speter (void)printf("%d bytes from %s: ", cc, 118310015Speter pr_addr(from->sin_addr)); 118410015Speter pr_icmph(icp); 118510015Speter } else 118610015Speter return; 118710015Speter } 118810015Speter 118910015Speter /* Display any IP options */ 119010015Speter cp = (u_char *)buf + sizeof(struct ip); 119116575Speter 119210015Speter for (; hlen > (int)sizeof(struct ip); --hlen, ++cp) 119310015Speter switch (*cp) { 119416575Speter case IPOPT_EOL: 119510015Speter hlen = 0; 119610015Speter break; 119710015Speter case IPOPT_LSRR: 119810015Speter case IPOPT_SSRR: 119910015Speter (void)printf(*cp == IPOPT_LSRR ? 120010015Speter "\nLSRR: " : "\nSSRR: "); 120110015Speter j = cp[IPOPT_OLEN] - IPOPT_MINOFF + 1; 120210015Speter hlen -= 2; 120310015Speter cp += 2; 120410015Speter if (j >= INADDR_LEN && 120510015Speter j <= hlen - (int)sizeof(struct ip)) { 120610015Speter for (;;) { 120710015Speter bcopy(++cp, &ina.s_addr, INADDR_LEN); 120810015Speter if (ina.s_addr == 0) 120910015Speter (void)printf("\t0.0.0.0"); 121010015Speter else 121110015Speter (void)printf("\t%s", 121210015Speter pr_addr(ina)); 121310015Speter hlen -= INADDR_LEN; 121410015Speter cp += INADDR_LEN - 1; 121510015Speter j -= INADDR_LEN; 121610015Speter if (j < INADDR_LEN) 121710015Speter break; 121810015Speter (void)putchar('\n'); 121910015Speter } 122010015Speter } else 122110015Speter (void)printf("\t(truncated route)\n"); 122210015Speter break; 122310015Speter case IPOPT_RR: 122410015Speter j = cp[IPOPT_OLEN]; /* get length */ 122510015Speter i = cp[IPOPT_OFFSET]; /* and pointer */ 122610015Speter hlen -= 2; 122710015Speter cp += 2; 122810015Speter if (i > j) 122910015Speter i = j; 123010015Speter i = i - IPOPT_MINOFF + 1; 123110015Speter if (i < 0 || i > (hlen - (int)sizeof(struct ip))) { 123210015Speter old_rrlen = 0; 123310015Speter continue; 123410015Speter } 123510015Speter if (i == old_rrlen 123610015Speter && !bcmp((char *)cp, old_rr, i) 123710015Speter && !(options & F_FLOOD)) { 123810015Speter (void)printf("\t(same route)"); 123910015Speter hlen -= i; 124010015Speter cp += i; 124110015Speter break; 124210015Speter } 124310015Speter old_rrlen = i; 124410015Speter bcopy((char *)cp, old_rr, i); 124510015Speter (void)printf("\nRR: "); 124610015Speter if (i >= INADDR_LEN && 124710015Speter i <= hlen - (int)sizeof(struct ip)) { 124810015Speter for (;;) { 124910044Speter bcopy(++cp, &ina.s_addr, INADDR_LEN); 125011872Sphk if (ina.s_addr == 0) 125110015Speter (void)printf("\t0.0.0.0"); 125210015Speter else 125310015Speter (void)printf("\t%s", 125410015Speter pr_addr(ina)); 125510015Speter hlen -= INADDR_LEN; 125610015Speter cp += INADDR_LEN - 1; 125710015Speter i -= INADDR_LEN; 125810044Speter if (i < INADDR_LEN) 125910044Speter break; 126010044Speter (void)putchar('\n'); 126110044Speter } 126210044Speter } else 126310044Speter (void)printf("\t(truncated route)"); 126410015Speter break; 126510015Speter case IPOPT_NOP: 126610015Speter (void)printf("\nNOP"); 126710015Speter break; 126810015Speter default: 126910015Speter (void)printf("\nunknown option %x", *cp); 127010015Speter break; 127110015Speter } 127210015Speter if (!(options & F_FLOOD)) { 127318515Speter (void)putchar('\n'); 127410015Speter (void)fflush(stdout); 127510015Speter } 127610015Speter} 127710015Speter 127810015Speter/* 127910015Speter * in_cksum -- 128010015Speter * Checksum routine for Internet Protocol family headers (C Version) 128110015Speter */ 128210015Speteru_short 128310015Speterin_cksum(addr, len) 128410015Speter u_short *addr; 128510015Speter int len; 128610015Speter{ 128710015Speter int nleft, sum; 128810015Speter u_short *w; 128910015Speter union { 129010015Speter u_short us; 129110015Speter u_char uc[2]; 129210015Speter } last; 129310044Speter u_short answer; 129410044Speter 129510044Speter nleft = len; 129610015Speter sum = 0; 129710044Speter w = addr; 129810015Speter 129910015Speter /* 130012174Speter * Our algorithm is simple, using a 32 bit accumulator (sum), we add 130110015Speter * sequential 16 bit words to it, and at the end, fold back all the 130210015Speter * carry bits from the top 16 bits into the lower 16 bits. 130310015Speter */ 130410015Speter while (nleft > 1) { 130510015Speter sum += *w++; 130610015Speter nleft -= 2; 130710015Speter } 130810015Speter 130910015Speter /* mop up an odd byte, if necessary */ 131010015Speter if (nleft == 1) { 131110015Speter last.uc[0] = *(u_char *)w; 131210015Speter last.uc[1] = 0; 131310015Speter sum += last.us; 131410015Speter } 131510015Speter 131610015Speter /* add back carry outs from top 16 bits to low 16 bits */ 131710015Speter sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */ 131810015Speter sum += (sum >> 16); /* add carry */ 131910015Speter answer = ~sum; /* truncate to 16 bits */ 132010015Speter return(answer); 132110015Speter} 132210015Speter 132310015Speter/* 132410015Speter * tvsub -- 132510015Speter * Subtract 2 timeval structs: out = out - in. Out is assumed to 132610015Speter * be >= in. 132710015Speter */ 132810015Speterstatic void 132910015Spetertvsub(out, in) 133010015Speter struct timeval *out, *in; 133110015Speter{ 133210015Speter 133310015Speter if ((out->tv_usec -= in->tv_usec) < 0) { 133410015Speter --out->tv_sec; 133510015Speter out->tv_usec += 1000000; 133610015Speter } 133710015Speter out->tv_sec -= in->tv_sec; 133810015Speter} 133910015Speter 134010015Speter/* 134110015Speter * status -- 134210015Speter * Print out statistics when SIGINFO is received. 134310015Speter */ 134410015Speter 134510015Speterstatic void 134610015Speterstatus(sig) 134710015Speter int sig __unused; 134810015Speter{ 134910015Speter 135010015Speter siginfo_p = 1; 135110015Speter} 135210015Speter 135310015Speterstatic void 135410015Spetercheck_status() 135510015Speter{ 135610015Speter 135710015Speter if (siginfo_p) { 135810015Speter siginfo_p = 0; 135910015Speter (void)fprintf(stderr, "\r%ld/%ld packets received (%.0f%%)", 136010044Speter nreceived, ntransmitted, 136110044Speter ntransmitted ? nreceived * 100.0 / ntransmitted : 0.0); 136210015Speter if (nreceived && timing) 136310044Speter (void)fprintf(stderr, " %.3f min / %.3f avg / %.3f max", 136410044Speter tmin, tsum / (nreceived + nrepeats), tmax); 136510015Speter (void)fprintf(stderr, "\n"); 136616444Speter } 136710015Speter} 136810044Speter 136910044Speter/* 137016444Speter * finish -- 137110015Speter * Print out statistics, and give up. 137210044Speter */ 137310044Speterstatic void 137416444Speterfinish() 137510015Speter{ 137610015Speter 137710015Speter (void)signal(SIGINT, SIG_IGN); 137810015Speter (void)signal(SIGALRM, SIG_IGN); 137910015Speter (void)putchar('\n'); 138010015Speter (void)fflush(stdout); 138110015Speter (void)printf("--- %s ping statistics ---\n", hostname); 138210015Speter (void)printf("%ld packets transmitted, ", ntransmitted); 138310015Speter (void)printf("%ld packets received, ", nreceived); 138410015Speter if (nrepeats) 138510015Speter (void)printf("+%ld duplicates, ", nrepeats); 138610015Speter if (ntransmitted) { 138710015Speter if (nreceived > ntransmitted) 138810015Speter (void)printf("-- somebody's printing up packets!"); 138910015Speter else 139010015Speter (void)printf("%d%% packet loss", 139112724Sphk (int)(((ntransmitted - nreceived) * 100) / 139210015Speter ntransmitted)); 139310015Speter } 139410015Speter if (nrcvtimeout) 139510015Speter (void)printf(", %ld packets out of wait time", nrcvtimeout); 139610015Speter (void)putchar('\n'); 139710015Speter if (nreceived && timing) { 139810015Speter double n = nreceived + nrepeats; 139910015Speter double avg = tsum / n; 140010015Speter double vari = tsumsq / n - avg * avg; 140110015Speter (void)printf( 140210161Speter "round-trip min/avg/max/stddev = %.3f/%.3f/%.3f/%.3f ms\n", 140310015Speter tmin, avg, tmax, sqrt(vari)); 140410015Speter } 140510015Speter 140610015Speter if (nreceived) 140710015Speter exit(0); 140810015Speter else 140910044Speter exit(2); 141010044Speter} 141110015Speter 141210015Speter#ifdef notdef 141310015Speterstatic char *ttab[] = { 141410015Speter "Echo Reply", /* ip + seq + udata */ 141510015Speter "Dest Unreachable", /* net, host, proto, port, frag, sr + IP */ 141610015Speter "Source Quench", /* IP */ 141710015Speter "Redirect", /* redirect type, gateway, + IP */ 141810015Speter "Echo", 141910015Speter "Time Exceeded", /* transit, frag reassem + IP */ 142010015Speter "Parameter Problem", /* pointer + IP */ 142110015Speter "Timestamp", /* id + seq + three timestamps */ 142210015Speter "Timestamp Reply", /* " */ 142310015Speter "Info Request", /* id + sq */ 142410015Speter "Info Reply" /* " */ 142510015Speter}; 142610015Speter#endif 142710015Speter 142810015Speter/* 142910015Speter * pr_icmph -- 143010161Speter * Print a descriptive string about an ICMP header. 143110161Speter */ 143210161Speterstatic void 143310161Speterpr_icmph(icp) 143410161Speter struct icmp *icp; 143510161Speter{ 143610161Speter 143710161Speter switch(icp->icmp_type) { 143810161Speter case ICMP_ECHOREPLY: 143910161Speter (void)printf("Echo Reply\n"); 144010161Speter /* XXX ID + Seq + Data */ 144110161Speter break; 144210161Speter case ICMP_UNREACH: 144310015Speter switch(icp->icmp_code) { 144410015Speter case ICMP_UNREACH_NET: 144510015Speter (void)printf("Destination Net Unreachable\n"); 144610161Speter break; 144710015Speter case ICMP_UNREACH_HOST: 144810161Speter (void)printf("Destination Host Unreachable\n"); 144910015Speter break; 145010161Speter case ICMP_UNREACH_PROTOCOL: 145110161Speter (void)printf("Destination Protocol Unreachable\n"); 145210015Speter break; 145310161Speter case ICMP_UNREACH_PORT: 145410015Speter (void)printf("Destination Port Unreachable\n"); 145510161Speter break; 145610161Speter case ICMP_UNREACH_NEEDFRAG: 145710161Speter (void)printf("frag needed and DF set (MTU %d)\n", 145810161Speter ntohs(icp->icmp_nextmtu)); 145910161Speter break; 146010161Speter case ICMP_UNREACH_SRCFAIL: 146110161Speter (void)printf("Source Route Failed\n"); 146210161Speter break; 146310161Speter case ICMP_UNREACH_FILTER_PROHIB: 146416575Speter (void)printf("Communication prohibited by filter\n"); 146510161Speter break; 146610161Speter default: 146710161Speter (void)printf("Dest Unreachable, Bad Code: %d\n", 146810015Speter icp->icmp_code); 146910161Speter break; 147010015Speter } 147110161Speter /* Print returned IP header information */ 147210015Speter#ifndef icmp_data 147310161Speter pr_retip(&icp->icmp_ip); 147410015Speter#else 147510015Speter pr_retip((struct ip *)icp->icmp_data); 147610161Speter#endif 147710015Speter break; 147810161Speter case ICMP_SOURCEQUENCH: 147910015Speter (void)printf("Source Quench\n"); 148010161Speter#ifndef icmp_data 148110015Speter pr_retip(&icp->icmp_ip); 148210161Speter#else 148310015Speter pr_retip((struct ip *)icp->icmp_data); 148410161Speter#endif 148510161Speter break; 148610161Speter case ICMP_REDIRECT: 148710161Speter switch(icp->icmp_code) { 148810161Speter case ICMP_REDIRECT_NET: 148910161Speter (void)printf("Redirect Network"); 149010161Speter break; 149110015Speter case ICMP_REDIRECT_HOST: 149210161Speter (void)printf("Redirect Host"); 149310161Speter break; 149410161Speter case ICMP_REDIRECT_TOSNET: 149510161Speter (void)printf("Redirect Type of Service and Network"); 149610161Speter break; 149710161Speter case ICMP_REDIRECT_TOSHOST: 149810161Speter (void)printf("Redirect Type of Service and Host"); 149910161Speter break; 150010161Speter default: 150110161Speter (void)printf("Redirect, Bad Code: %d", icp->icmp_code); 150210161Speter break; 150310161Speter } 150410161Speter (void)printf("(New addr: %s)\n", inet_ntoa(icp->icmp_gwaddr)); 150510015Speter#ifndef icmp_data 150610161Speter pr_retip(&icp->icmp_ip); 150710015Speter#else 150810161Speter pr_retip((struct ip *)icp->icmp_data); 150910161Speter#endif 151010161Speter break; 151110161Speter case ICMP_ECHO: 151210015Speter (void)printf("Echo Request\n"); 151310015Speter /* XXX ID + Seq + Data */ 151410161Speter break; 151510161Speter case ICMP_TIMXCEED: 151610161Speter switch(icp->icmp_code) { 151710161Speter case ICMP_TIMXCEED_INTRANS: 151810161Speter (void)printf("Time to live exceeded\n"); 151910161Speter break; 152010161Speter case ICMP_TIMXCEED_REASS: 152110161Speter (void)printf("Frag reassembly time exceeded\n"); 152210161Speter break; 152310015Speter default: 152410161Speter (void)printf("Time exceeded, Bad Code: %d\n", 152510161Speter icp->icmp_code); 152610161Speter break; 152710161Speter } 152810161Speter#ifndef icmp_data 152910015Speter pr_retip(&icp->icmp_ip); 153010015Speter#else 153110015Speter pr_retip((struct ip *)icp->icmp_data); 153210015Speter#endif 153310015Speter break; 153410015Speter case ICMP_PARAMPROB: 153510161Speter (void)printf("Parameter problem: pointer = 0x%02x\n", 153610015Speter icp->icmp_hun.ih_pptr); 153710015Speter#ifndef icmp_data 153810015Speter pr_retip(&icp->icmp_ip); 153910015Speter#else 154010015Speter pr_retip((struct ip *)icp->icmp_data); 154110015Speter#endif 154210161Speter break; 154310015Speter case ICMP_TSTAMP: 154410015Speter (void)printf("Timestamp\n"); 154510015Speter /* XXX ID + Seq + 3 timestamps */ 154610015Speter break; 154710015Speter case ICMP_TSTAMPREPLY: 154810015Speter (void)printf("Timestamp Reply\n"); 154910015Speter /* XXX ID + Seq + 3 timestamps */ 155010015Speter break; 155110015Speter case ICMP_IREQ: 155210015Speter (void)printf("Information Request\n"); 155310015Speter /* XXX ID + Seq */ 155410044Speter break; 155510044Speter case ICMP_IREQREPLY: 155610015Speter (void)printf("Information Reply\n"); 155710015Speter /* XXX ID + Seq */ 155810015Speter break; 155910015Speter case ICMP_MASKREQ: 156010015Speter (void)printf("Address Mask Request\n"); 156110015Speter break; 156210015Speter case ICMP_MASKREPLY: 156310015Speter (void)printf("Address Mask Reply\n"); 156410015Speter break; 156510015Speter case ICMP_ROUTERADVERT: 156610015Speter (void)printf("Router Advertisement\n"); 156710015Speter break; 156810015Speter case ICMP_ROUTERSOLICIT: 156910015Speter (void)printf("Router Solicitation\n"); 157010015Speter break; 157110015Speter default: 157210015Speter (void)printf("Bad ICMP type: %d\n", icp->icmp_type); 157310015Speter } 157410015Speter} 157510015Speter 157610015Speter/* 157710015Speter * pr_iph -- 157810015Speter * Print an IP header with options. 157910015Speter */ 158010015Speterstatic void 158110015Speterpr_iph(ip) 158210015Speter struct ip *ip; 158310015Speter{ 158410015Speter u_char *cp; 158510015Speter int hlen; 158610015Speter 158710015Speter hlen = ip->ip_hl << 2; 158810015Speter cp = (u_char *)ip + 20; /* point to options */ 158910015Speter 159010015Speter (void)printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst\n"); 159110015Speter (void)printf(" %1x %1x %02x %04x %04x", 159210015Speter ip->ip_v, ip->ip_hl, ip->ip_tos, ntohs(ip->ip_len), 159310015Speter ntohs(ip->ip_id)); 159410015Speter (void)printf(" %1lx %04lx", 159510015Speter (u_long) (ntohl(ip->ip_off) & 0xe000) >> 13, 159610015Speter (u_long) ntohl(ip->ip_off) & 0x1fff); 159710015Speter (void)printf(" %02x %02x %04x", ip->ip_ttl, ip->ip_p, 159810015Speter ntohs(ip->ip_sum)); 159910015Speter (void)printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->ip_src.s_addr)); 160010015Speter (void)printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->ip_dst.s_addr)); 160110015Speter /* dump any option bytes */ 160210015Speter while (hlen-- > 20) { 160310015Speter (void)printf("%02x", *cp++); 160410015Speter } 160510015Speter (void)putchar('\n'); 160610015Speter} 160710015Speter 160810015Speter/* 160910015Speter * pr_addr -- 161010015Speter * Return an ascii host address as a dotted quad and optionally with 161110015Speter * a hostname. 161210015Speter */ 161310015Speterstatic char * 161410015Speterpr_addr(ina) 161510015Speter struct in_addr ina; 161610015Speter{ 161710015Speter struct hostent *hp; 161810015Speter static char buf[16 + 3 + MAXHOSTNAMELEN]; 161910015Speter 162010015Speter if ((options & F_NUMERIC) || 162110015Speter !(hp = gethostbyaddr((char *)&ina, 4, AF_INET))) 162210015Speter return inet_ntoa(ina); 162310015Speter else 162410015Speter (void)snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name, 162510015Speter inet_ntoa(ina)); 162610015Speter return(buf); 162710015Speter} 162810015Speter 162910015Speter/* 163010015Speter * pr_retip -- 163110015Speter * Dump some info on a returned (via ICMP) IP packet. 163210015Speter */ 163310015Speterstatic void 163410015Speterpr_retip(ip) 163510015Speter struct ip *ip; 163610015Speter{ 163710015Speter u_char *cp; 163810015Speter int hlen; 163910015Speter 164010015Speter pr_iph(ip); 164110015Speter hlen = ip->ip_hl << 2; 164210015Speter cp = (u_char *)ip + hlen; 164310015Speter 164410015Speter if (ip->ip_p == 6) 164510015Speter (void)printf("TCP: from port %u, to port %u (decimal)\n", 164610015Speter (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); 164710015Speter else if (ip->ip_p == 17) 164810015Speter (void)printf("UDP: from port %u, to port %u (decimal)\n", 164910015Speter (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); 165010015Speter} 165110015Speter 165210015Speterstatic char * 165310015Speterpr_ntime (n_time timestamp) 165410015Speter{ 165510015Speter static char buf[10]; 165610015Speter int hour, min, sec; 165710015Speter 165810015Speter sec = ntohl(timestamp) / 1000; 165910015Speter hour = sec / 60 / 60; 166010015Speter min = (sec % (60 * 60)) / 60; 166110015Speter sec = (sec % (60 * 60)) % 60; 166210015Speter 166312174Speter (void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d", hour, min, sec); 166412496Speter 166512496Speter return (buf); 166610015Speter} 166710015Speter 166810708Speterstatic void 166910015Speterfill(bp, patp) 167010015Speter char *bp, *patp; 167110015Speter{ 167210015Speter char *cp; 167310015Speter int pat[16]; 167412174Speter u_int ii, jj, kk; 167512174Speter 167610015Speter for (cp = patp; *cp; cp++) { 167710015Speter if (!isxdigit(*cp)) 167811609Speter errx(EX_USAGE, 167910015Speter "patterns must be specified as hex digits"); 168010015Speter 168110015Speter } 168210015Speter ii = sscanf(patp, 168310015Speter "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x", 168412174Speter &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6], 168510015Speter &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12], 168610015Speter &pat[13], &pat[14], &pat[15]); 168710015Speter 168810015Speter if (ii > 0) 168910015Speter for (kk = 0; kk <= maxpayload - (TIMEVAL_LEN + ii); kk += ii) 169010015Speter for (jj = 0; jj < ii; ++jj) 169110015Speter bp[jj + kk] = pat[jj]; 169210015Speter if (!(options & F_QUIET)) { 169310015Speter (void)printf("PATTERN: 0x"); 169410015Speter for (jj = 0; jj < ii; ++jj) 169512174Speter (void)printf("%02x", bp[jj] & 0xFF); 169610015Speter (void)printf("\n"); 169710015Speter } 169810015Speter} 169910015Speter 170010015Speter#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 170110015Speter#define SECOPT " [-P policy]" 170212174Speter#else 170312174Speter#define SECOPT "" 170412174Speter#endif 170512174Speterstatic void 170612174Speterusage() 170712174Speter{ 170812174Speter 170912174Speter (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", 171012174Speter"usage: ping [-AaDdfnoQqRrv] [-c count] [-G sweepmaxsize] [-g sweepminsize]", 171112174Speter" [-h sweepincrsize] [-i wait] [-l preload] [-M mask | time] [-m ttl]", 171212174Speter" " SECOPT " [-p pattern] [-S src_addr] [-s packetsize] [-t timeout]", 171310015Speter" [-W waittime] [-z tos] host", 171417547Speter" ping [-AaDdfLnoQqRrv] [-c count] [-I iface] [-i wait] [-l preload]", 171510015Speter" [-M mask | time] [-m ttl]" SECOPT " [-p pattern] [-S src_addr]", 171611609Speter" [-s packetsize] [-T ttl] [-t timeout] [-W waittime]", 171710015Speter" [-z tos] mcast-group"); 171810015Speter exit(EX_USAGE); 171915639Speter} 172010015Speter