11558Srgrimes/* 21558Srgrimes * Copyright (c) 1989, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * This code is derived from software contributed to Berkeley by 61558Srgrimes * Mike Muuss. 71558Srgrimes * 81558Srgrimes * Redistribution and use in source and binary forms, with or without 91558Srgrimes * modification, are permitted provided that the following conditions 101558Srgrimes * are met: 111558Srgrimes * 1. Redistributions of source code must retain the above copyright 121558Srgrimes * notice, this list of conditions and the following disclaimer. 131558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141558Srgrimes * notice, this list of conditions and the following disclaimer in the 151558Srgrimes * documentation and/or other materials provided with the distribution. 161558Srgrimes * 4. Neither the name of the University nor the names of its contributors 171558Srgrimes * may be used to endorse or promote products derived from this software 181558Srgrimes * without specific prior written permission. 191558Srgrimes * 201558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301558Srgrimes * SUCH DAMAGE. 311558Srgrimes */ 321558Srgrimes 33114589Sobrien#if 0 341558Srgrimes#ifndef lint 3523247Swollmanstatic const char copyright[] = 361558Srgrimes"@(#) Copyright (c) 1989, 1993\n\ 371558Srgrimes The Regents of the University of California. All rights reserved.\n"; 381558Srgrimes#endif /* not lint */ 391558Srgrimes 401558Srgrimes#ifndef lint 411558Srgrimesstatic char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93"; 42114589Sobrien#endif /* not lint */ 4337671Scharnier#endif 44114589Sobrien#include <sys/cdefs.h> 45114589Sobrien__FBSDID("$FreeBSD$"); 461558Srgrimes 471558Srgrimes/* 481558Srgrimes * P I N G . C 491558Srgrimes * 5037671Scharnier * Using the Internet Control Message Protocol (ICMP) "ECHO" facility, 511558Srgrimes * measure round-trip-delays and packet loss across network paths. 521558Srgrimes * 531558Srgrimes * Author - 541558Srgrimes * Mike Muuss 551558Srgrimes * U. S. Army Ballistic Research Laboratory 561558Srgrimes * December, 1983 571558Srgrimes * 581558Srgrimes * Status - 591558Srgrimes * Public Domain. Distribution Unlimited. 601558Srgrimes * Bugs - 611558Srgrimes * More statistics could always be gathered. 621558Srgrimes * This program has to run SUID to ROOT to access the ICMP socket. 631558Srgrimes */ 641558Srgrimes 6523247Swollman#include <sys/param.h> /* NB: we rely on this for <sys/types.h> */ 66109733Smaxim#include <sys/socket.h> 67109731Smaxim#include <sys/sysctl.h> 68109733Smaxim#include <sys/time.h> 69109733Smaxim#include <sys/uio.h> 7023247Swollman 71109733Smaxim#include <netinet/in.h> 72109733Smaxim#include <netinet/in_systm.h> 73109733Smaxim#include <netinet/ip.h> 74109733Smaxim#include <netinet/ip_icmp.h> 75109733Smaxim#include <netinet/ip_var.h> 76109733Smaxim#include <arpa/inet.h> 77109733Smaxim 78109733Smaxim#ifdef IPSEC 79171135Sgnn#include <netipsec/ipsec.h> 80109733Smaxim#endif /*IPSEC*/ 81109733Smaxim 8223247Swollman#include <ctype.h> 8323247Swollman#include <err.h> 8423247Swollman#include <errno.h> 8527508Swollman#include <math.h> 8623247Swollman#include <netdb.h> 8723247Swollman#include <signal.h> 8823247Swollman#include <stdio.h> 8923247Swollman#include <stdlib.h> 9023247Swollman#include <string.h> 9123247Swollman#include <sysexits.h> 9223247Swollman#include <unistd.h> 9323247Swollman 9499446Smaxim#define INADDR_LEN ((int)sizeof(in_addr_t)) 95135957Smaxim#define TIMEVAL_LEN ((int)sizeof(struct tv32)) 96111765Smdodd#define MASK_LEN (ICMP_MASKLEN - ICMP_MINLEN) 97111765Smdodd#define TS_LEN (ICMP_TSLEN - ICMP_MINLEN) 98112729Smdodd#define DEFDATALEN 56 /* default data length */ 9927533Sbde#define FLOOD_BACKOFF 20000 /* usecs to back off if F_FLOOD mode */ 10027533Sbde /* runs out of buffer space */ 10199447Smaxim#define MAXIPLEN (sizeof(struct ip) + MAX_IPOPTLEN) 10299447Smaxim#define MAXICMPLEN (ICMP_ADVLENMIN + MAX_IPOPTLEN) 103157535Sglebius#define MAXWAIT 10000 /* max ms to wait for response */ 10456342Sbillf#define MAXALARM (60 * 60) /* max seconds for alarm timeout */ 105109731Smaxim#define MAXTOS 255 1061558Srgrimes 1071558Srgrimes#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */ 1081558Srgrimes#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */ 1091558Srgrimes#define SET(bit) (A(bit) |= B(bit)) 1101558Srgrimes#define CLR(bit) (A(bit) &= (~B(bit))) 1111558Srgrimes#define TST(bit) (A(bit) & B(bit)) 1121558Srgrimes 113135957Smaximstruct tv32 { 114135957Smaxim int32_t tv32_sec; 115135957Smaxim int32_t tv32_usec; 116135957Smaxim}; 117135957Smaxim 1181558Srgrimes/* various options */ 1191558Srgrimesint options; 12020540Sfenner#define F_FLOOD 0x0001 12120540Sfenner#define F_INTERVAL 0x0002 12220540Sfenner#define F_NUMERIC 0x0004 12320540Sfenner#define F_PINGFILLED 0x0008 12420540Sfenner#define F_QUIET 0x0010 12520540Sfenner#define F_RROUTE 0x0020 12620540Sfenner#define F_SO_DEBUG 0x0040 12720540Sfenner#define F_SO_DONTROUTE 0x0080 12820540Sfenner#define F_VERBOSE 0x0100 12920540Sfenner#define F_QUIET2 0x0200 13020540Sfenner#define F_NOLOOP 0x0400 13120540Sfenner#define F_MTTL 0x0800 13220540Sfenner#define F_MIF 0x1000 13322417Sdanny#define F_AUDIBLE 0x2000 13455505Sshin#ifdef IPSEC 13555505Sshin#ifdef IPSEC_POLICY_IPSEC 13655505Sshin#define F_POLICY 0x4000 13755505Sshin#endif /*IPSEC_POLICY_IPSEC*/ 13855505Sshin#endif /*IPSEC*/ 13974029Sru#define F_TTL 0x8000 14077119Sphk#define F_MISSED 0x10000 141104339Sdd#define F_ONCE 0x20000 142109731Smaxim#define F_HDRINCL 0x40000 143110009Smdodd#define F_MASK 0x80000 144111765Smdodd#define F_TIME 0x100000 145149086Sglebius#define F_SWEEP 0x200000 146157535Sglebius#define F_WAITTIME 0x400000 1471558Srgrimes 1481558Srgrimes/* 1491558Srgrimes * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum 1501558Srgrimes * number of received sequence numbers we can keep track of. Change 128 1511558Srgrimes * to 8192 for complete accuracy... 1521558Srgrimes */ 1531558Srgrimes#define MAX_DUP_CHK (8 * 128) 1541558Srgrimesint mx_dup_ck = MAX_DUP_CHK; 1551558Srgrimeschar rcvd_tbl[MAX_DUP_CHK / 8]; 1561558Srgrimes 15779403Smjacobstruct sockaddr_in whereto; /* who to ping */ 1581558Srgrimesint datalen = DEFDATALEN; 159112531Sbdeint maxpayload; 1601558Srgrimesint s; /* socket file descriptor */ 161109731Smaximu_char outpackhdr[IP_MAXPACKET], *outpack; 162109733Smaximchar BBELL = '\a'; /* characters written for MISSED and AUDIBLE */ 1631558Srgrimeschar BSPACE = '\b'; /* characters written for flood */ 1641558Srgrimeschar DOT = '.'; 1651558Srgrimeschar *hostname; 16642337Simpchar *shostname; 1671558Srgrimesint ident; /* process id to identify our packets */ 16823295Simpint uid; /* cached uid for micro-optimization */ 169111765Smdoddu_char icmp_type = ICMP_ECHO; 170111765Smdoddu_char icmp_type_rsp = ICMP_ECHOREPLY; 171111765Smdoddint phdr_len = 0; 172117548Smaximint send_len; 1731558Srgrimes 1741558Srgrimes/* counters */ 175109733Smaximlong nmissedmax; /* max value of ntransmitted - nreceived - 1 */ 1761558Srgrimeslong npackets; /* max packets to transmit */ 1771558Srgrimeslong nreceived; /* # of packets we got back */ 1781558Srgrimeslong nrepeats; /* number of duplicates */ 1791558Srgrimeslong ntransmitted; /* sequence # for outbound packets = #sent */ 180149086Sglebiuslong snpackets; /* max packets to transmit in one sweep */ 181149086Sglebiuslong snreceived; /* # of packets we got back in this sweep */ 182149086Sglebiuslong sntransmitted; /* # of packets we sent in this sweep */ 183149086Sglebiusint sweepmax; /* max value of payload in sweep */ 184149086Sglebiusint sweepmin = 0; /* start value of payload in sweep */ 185149086Sglebiusint sweepincr = 1; /* payload increment in sweep */ 18638549Sdillonint interval = 1000; /* interval between packets, ms */ 187157535Sglebiusint waittime = MAXWAIT; /* timeout for each packet */ 188157535Sglebiuslong nrcvtimeout = 0; /* # of packets we got back after waittime */ 1891558Srgrimes 1901558Srgrimes/* timing */ 1911558Srgrimesint timing; /* flag to do timing */ 1921558Srgrimesdouble tmin = 999999999.0; /* minimum round trip time */ 1931558Srgrimesdouble tmax = 0.0; /* maximum round trip time */ 1941558Srgrimesdouble tsum = 0.0; /* sum of all times, for doing average */ 19527508Swollmandouble tsumsq = 0.0; /* sum of all times squared, for std. dev. */ 1961558Srgrimes 19727533Sbdevolatile sig_atomic_t finish_up; /* nonzero if we've been told to finish up */ 19827533Sbdevolatile sig_atomic_t siginfo_p; 1993792Ssef 20023247Swollmanstatic void fill(char *, char *); 20123247Swollmanstatic u_short in_cksum(u_short *, int); 20223247Swollmanstatic void check_status(void); 20327533Sbdestatic void finish(void) __dead2; 20423247Swollmanstatic void pinger(void); 20523247Swollmanstatic char *pr_addr(struct in_addr); 206111765Smdoddstatic char *pr_ntime(n_time); 20723247Swollmanstatic void pr_icmph(struct icmp *); 20823247Swollmanstatic void pr_iph(struct ip *); 20936378Sfennerstatic void pr_pack(char *, int, struct sockaddr_in *, struct timeval *); 21023247Swollmanstatic void pr_retip(struct ip *); 21123247Swollmanstatic void status(int); 21227533Sbdestatic void stopit(int); 213209366Sedstatic void tvsub(struct timeval *, const struct timeval *); 21437671Scharnierstatic void usage(void) __dead2; 2151558Srgrimes 21623247Swollmanint 217209366Sedmain(int argc, char *const *argv) 2181558Srgrimes{ 219111932Sseanc struct sockaddr_in from, sock_in; 22093035Sobrien struct in_addr ifaddr; 221109733Smaxim struct timeval last, intvl; 22293035Sobrien struct iovec iov; 223109731Smaxim struct ip *ip; 22493035Sobrien struct msghdr msg; 22593035Sobrien struct sigaction si_sa; 226109731Smaxim size_t sz; 227169833Scognet u_char *datap, packet[IP_MAXPACKET] __aligned(4); 228110054Smdodd char *ep, *source, *target, *payload; 229109733Smaxim struct hostent *hp; 23093035Sobrien#ifdef IPSEC_POLICY_IPSEC 23193035Sobrien char *policy_in, *policy_out; 23293035Sobrien#endif 233109733Smaxim struct sockaddr_in *to; 234109733Smaxim double t; 23593035Sobrien u_long alarmtimeout, ultmp; 236117548Smaxim int almost_done, ch, df, hold, i, icmp_len, mib[4], preload, sockerrno, 237109733Smaxim tos, ttl; 23893035Sobrien char ctrl[CMSG_SPACE(sizeof(struct timeval))]; 23993035Sobrien char hnamebuf[MAXHOSTNAMELEN], snamebuf[MAXHOSTNAMELEN]; 2401558Srgrimes#ifdef IP_OPTIONS 24199447Smaxim char rspace[MAX_IPOPTLEN]; /* record route space */ 2421558Srgrimes#endif 243109733Smaxim unsigned char loop, mttl; 24493035Sobrien 245111932Sseanc payload = source = NULL; 24655505Sshin#ifdef IPSEC_POLICY_IPSEC 24793035Sobrien policy_in = policy_out = NULL; 24855505Sshin#endif 2491558Srgrimes 25017474Sfenner /* 25117474Sfenner * Do the stuff that we need root priv's for *first*, and 25217474Sfenner * then drop our setuid bit. Save error reporting for 25317474Sfenner * after arg parsing. 25417474Sfenner */ 25523247Swollman s = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP); 25623247Swollman sockerrno = errno; 25717474Sfenner 258241852Seadler if (setuid(getuid()) != 0) 259241852Seadler err(EX_NOPERM, "setuid() failed"); 26023295Simp uid = getuid(); 26117474Sfenner 262109731Smaxim alarmtimeout = df = preload = tos = 0; 2633792Ssef 264109731Smaxim outpack = outpackhdr + sizeof(struct ip); 26574029Sru while ((ch = getopt(argc, argv, 266157535Sglebius "Aac:DdfG:g:h:I:i:Ll:M:m:nop:QqRrS:s:T:t:vW:z:" 26774029Sru#ifdef IPSEC 26855505Sshin#ifdef IPSEC_POLICY_IPSEC 26974029Sru "P:" 27055505Sshin#endif /*IPSEC_POLICY_IPSEC*/ 27174029Sru#endif /*IPSEC*/ 27274029Sru )) != -1) 27355505Sshin { 2741558Srgrimes switch(ch) { 27577119Sphk case 'A': 27677119Sphk options |= F_MISSED; 27777119Sphk break; 27822417Sdanny case 'a': 27922417Sdanny options |= F_AUDIBLE; 28022417Sdanny break; 2811558Srgrimes case 'c': 28223247Swollman ultmp = strtoul(optarg, &ep, 0); 28323247Swollman if (*ep || ep == optarg || ultmp > LONG_MAX || !ultmp) 28423247Swollman errx(EX_USAGE, 28523247Swollman "invalid count of packets to transmit: `%s'", 28623247Swollman optarg); 28723247Swollman npackets = ultmp; 2881558Srgrimes break; 289109731Smaxim case 'D': 290109731Smaxim options |= F_HDRINCL; 291109731Smaxim df = 1; 292109731Smaxim break; 2931558Srgrimes case 'd': 2941558Srgrimes options |= F_SO_DEBUG; 2951558Srgrimes break; 2961558Srgrimes case 'f': 29738549Sdillon if (uid) { 29823247Swollman errno = EPERM; 29923247Swollman err(EX_NOPERM, "-f flag"); 3001558Srgrimes } 3011558Srgrimes options |= F_FLOOD; 3021558Srgrimes setbuf(stdout, (char *)NULL); 3031558Srgrimes break; 304149086Sglebius case 'G': /* Maximum packet size for ping sweep */ 305149086Sglebius ultmp = strtoul(optarg, &ep, 0); 306149086Sglebius if (*ep || ep == optarg) 307149086Sglebius errx(EX_USAGE, "invalid packet size: `%s'", 308149086Sglebius optarg); 309149086Sglebius if (uid != 0 && ultmp > DEFDATALEN) { 310149086Sglebius errno = EPERM; 311149086Sglebius err(EX_NOPERM, 312149086Sglebius "packet size too large: %lu > %u", 313149086Sglebius ultmp, DEFDATALEN); 314149086Sglebius } 315149086Sglebius options |= F_SWEEP; 316149086Sglebius sweepmax = ultmp; 317149086Sglebius break; 318149086Sglebius case 'g': /* Minimum packet size for ping sweep */ 319149086Sglebius ultmp = strtoul(optarg, &ep, 0); 320149086Sglebius if (*ep || ep == optarg) 321149086Sglebius errx(EX_USAGE, "invalid packet size: `%s'", 322149086Sglebius optarg); 323149086Sglebius if (uid != 0 && ultmp > DEFDATALEN) { 324149086Sglebius errno = EPERM; 325149086Sglebius err(EX_NOPERM, 326149086Sglebius "packet size too large: %lu > %u", 327149086Sglebius ultmp, DEFDATALEN); 328149086Sglebius } 329149086Sglebius options |= F_SWEEP; 330149086Sglebius sweepmin = ultmp; 331149086Sglebius break; 332149086Sglebius case 'h': /* Packet size increment for ping sweep */ 333149086Sglebius ultmp = strtoul(optarg, &ep, 0); 334149086Sglebius if (*ep || ep == optarg || ultmp < 1) 335149086Sglebius errx(EX_USAGE, "invalid increment size: `%s'", 336149086Sglebius optarg); 337149086Sglebius if (uid != 0 && ultmp > DEFDATALEN) { 338149086Sglebius errno = EPERM; 339149086Sglebius err(EX_NOPERM, 340149086Sglebius "packet size too large: %lu > %u", 341149086Sglebius ultmp, DEFDATALEN); 342149086Sglebius } 343149086Sglebius options |= F_SWEEP; 344149086Sglebius sweepincr = ultmp; 345149086Sglebius break; 346111287Sru case 'I': /* multicast interface */ 347111287Sru if (inet_aton(optarg, &ifaddr) == 0) 348111287Sru errx(EX_USAGE, 349111287Sru "invalid multicast interface: `%s'", 350111287Sru optarg); 351111287Sru options |= F_MIF; 352111287Sru break; 3531558Srgrimes case 'i': /* wait between sending packets */ 35493638Smaxim t = strtod(optarg, &ep) * 1000.0; 35593638Smaxim if (*ep || ep == optarg || t > (double)INT_MAX) 35693638Smaxim errx(EX_USAGE, "invalid timing interval: `%s'", 35793638Smaxim optarg); 35893638Smaxim options |= F_INTERVAL; 35993638Smaxim interval = (int)t; 36093638Smaxim if (uid && interval < 1000) { 36193638Smaxim errno = EPERM; 36293638Smaxim err(EX_NOPERM, "-i interval too short"); 36338549Sdillon } 3641558Srgrimes break; 365111287Sru case 'L': 366111287Sru options |= F_NOLOOP; 367111287Sru loop = 0; 36820540Sfenner break; 3691558Srgrimes case 'l': 37023247Swollman ultmp = strtoul(optarg, &ep, 0); 37123247Swollman if (*ep || ep == optarg || ultmp > INT_MAX) 37293638Smaxim errx(EX_USAGE, 37393638Smaxim "invalid preload value: `%s'", optarg); 37446643Smckay if (uid) { 37523251Simp errno = EPERM; 37623251Simp err(EX_NOPERM, "-l flag"); 37723251Simp } 37823247Swollman preload = ultmp; 3791558Srgrimes break; 380111287Sru case 'M': 381111765Smdodd switch(optarg[0]) { 382111765Smdodd case 'M': 383111765Smdodd case 'm': 384111765Smdodd options |= F_MASK; 385111765Smdodd break; 386111765Smdodd case 'T': 387111765Smdodd case 't': 388111765Smdodd options |= F_TIME; 389111765Smdodd break; 390111765Smdodd default: 391111765Smdodd errx(EX_USAGE, "invalid message: `%c'", optarg[0]); 392111765Smdodd break; 393111765Smdodd } 39420540Sfenner break; 39574029Sru case 'm': /* TTL */ 39674029Sru ultmp = strtoul(optarg, &ep, 0); 397109732Smaxim if (*ep || ep == optarg || ultmp > MAXTTL) 39893638Smaxim errx(EX_USAGE, "invalid TTL: `%s'", optarg); 39974029Sru ttl = ultmp; 40074029Sru options |= F_TTL; 40174029Sru break; 4021558Srgrimes case 'n': 4031558Srgrimes options |= F_NUMERIC; 4041558Srgrimes break; 405104339Sdd case 'o': 406104339Sdd options |= F_ONCE; 407104339Sdd break; 408111287Sru#ifdef IPSEC 409111287Sru#ifdef IPSEC_POLICY_IPSEC 410111287Sru case 'P': 411111287Sru options |= F_POLICY; 412111287Sru if (!strncmp("in", optarg, 2)) 413111287Sru policy_in = strdup(optarg); 414111287Sru else if (!strncmp("out", optarg, 3)) 415111287Sru policy_out = strdup(optarg); 416111287Sru else 417111287Sru errx(1, "invalid security policy"); 418111287Sru break; 419111287Sru#endif /*IPSEC_POLICY_IPSEC*/ 420111287Sru#endif /*IPSEC*/ 4211558Srgrimes case 'p': /* fill buffer with user pattern */ 4221558Srgrimes options |= F_PINGFILLED; 423110054Smdodd payload = optarg; 424109733Smaxim break; 42517724Sfenner case 'Q': 42617724Sfenner options |= F_QUIET2; 42717724Sfenner break; 4281558Srgrimes case 'q': 4291558Srgrimes options |= F_QUIET; 4301558Srgrimes break; 4311558Srgrimes case 'R': 4321558Srgrimes options |= F_RROUTE; 4331558Srgrimes break; 4341558Srgrimes case 'r': 4351558Srgrimes options |= F_SO_DONTROUTE; 4361558Srgrimes break; 437111287Sru case 'S': 438111287Sru source = optarg; 439111287Sru break; 4401558Srgrimes case 's': /* size of packet to send */ 44123247Swollman ultmp = strtoul(optarg, &ep, 0); 44299447Smaxim if (*ep || ep == optarg) 44393638Smaxim errx(EX_USAGE, "invalid packet size: `%s'", 44493638Smaxim optarg); 445109734Smaxim if (uid != 0 && ultmp > DEFDATALEN) { 446109734Smaxim errno = EPERM; 447109734Smaxim err(EX_NOPERM, 448109734Smaxim "packet size too large: %lu > %u", 449109734Smaxim ultmp, DEFDATALEN); 450109734Smaxim } 45123247Swollman datalen = ultmp; 4521558Srgrimes break; 453111287Sru case 'T': /* multicast TTL */ 454111287Sru ultmp = strtoul(optarg, &ep, 0); 455111287Sru if (*ep || ep == optarg || ultmp > MAXTTL) 456111287Sru errx(EX_USAGE, "invalid multicast TTL: `%s'", 457111287Sru optarg); 458111287Sru mttl = ultmp; 459111287Sru options |= F_MTTL; 46042337Simp break; 46155996Sbillf case 't': 46256342Sbillf alarmtimeout = strtoul(optarg, &ep, 0); 46356342Sbillf if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX)) 46455996Sbillf errx(EX_USAGE, "invalid timeout: `%s'", 46555996Sbillf optarg); 46656342Sbillf if (alarmtimeout > MAXALARM) 46756342Sbillf errx(EX_USAGE, "invalid timeout: `%s' > %d", 46856342Sbillf optarg, MAXALARM); 46956342Sbillf alarm((int)alarmtimeout); 47055996Sbillf break; 4711558Srgrimes case 'v': 4721558Srgrimes options |= F_VERBOSE; 4731558Srgrimes break; 474157535Sglebius case 'W': /* wait ms for answer */ 475157535Sglebius t = strtod(optarg, &ep); 476157535Sglebius if (*ep || ep == optarg || t > (double)INT_MAX) 477157535Sglebius errx(EX_USAGE, "invalid timing interval: `%s'", 478157535Sglebius optarg); 479157535Sglebius options |= F_WAITTIME; 480157535Sglebius waittime = (int)t; 481157535Sglebius break; 482109731Smaxim case 'z': 483109731Smaxim options |= F_HDRINCL; 484109731Smaxim ultmp = strtoul(optarg, &ep, 0); 485109731Smaxim if (*ep || ep == optarg || ultmp > MAXTOS) 486109731Smaxim errx(EX_USAGE, "invalid TOS: `%s'", optarg); 487109731Smaxim tos = ultmp; 488109731Smaxim break; 4891558Srgrimes default: 49037671Scharnier usage(); 4911558Srgrimes } 49223247Swollman } 4931558Srgrimes 49423247Swollman if (argc - optind != 1) 49537671Scharnier usage(); 49623247Swollman target = argv[optind]; 4971558Srgrimes 498112568Smdodd switch (options & (F_MASK|F_TIME)) { 499112568Smdodd case 0: break; 500112568Smdodd case F_MASK: 501111765Smdodd icmp_type = ICMP_MASKREQ; 502111765Smdodd icmp_type_rsp = ICMP_MASKREPLY; 503112568Smdodd phdr_len = MASK_LEN; 504111765Smdodd if (!(options & F_QUIET)) 505111765Smdodd (void)printf("ICMP_MASKREQ\n"); 506112568Smdodd break; 507112568Smdodd case F_TIME: 508111765Smdodd icmp_type = ICMP_TSTAMP; 509111765Smdodd icmp_type_rsp = ICMP_TSTAMPREPLY; 510112568Smdodd phdr_len = TS_LEN; 511111765Smdodd if (!(options & F_QUIET)) 512111765Smdodd (void)printf("ICMP_TSTAMP\n"); 513112568Smdodd break; 514112568Smdodd default: 515112568Smdodd errx(EX_USAGE, "ICMP_TSTAMP and ICMP_MASKREQ are exclusive."); 516112568Smdodd break; 517111765Smdodd } 518117549Smaxim icmp_len = sizeof(struct ip) + ICMP_MINLEN + phdr_len; 519109734Smaxim if (options & F_RROUTE) 520117548Smaxim icmp_len += MAX_IPOPTLEN; 521117548Smaxim maxpayload = IP_MAXPACKET - icmp_len; 522109734Smaxim if (datalen > maxpayload) 523112531Sbde errx(EX_USAGE, "packet size too large: %d > %d", datalen, 524109734Smaxim maxpayload); 525117548Smaxim send_len = icmp_len + datalen; 526117549Smaxim datap = &outpack[ICMP_MINLEN + phdr_len + TIMEVAL_LEN]; 527110054Smdodd if (options & F_PINGFILLED) { 528110054Smdodd fill((char *)datap, payload); 529110054Smdodd } 53042337Simp if (source) { 531111932Sseanc bzero((char *)&sock_in, sizeof(sock_in)); 532111932Sseanc sock_in.sin_family = AF_INET; 533111932Sseanc if (inet_aton(source, &sock_in.sin_addr) != 0) { 53442337Simp shostname = source; 53542337Simp } else { 53642337Simp hp = gethostbyname2(source, AF_INET); 53742337Simp if (!hp) 53842337Simp errx(EX_NOHOST, "cannot resolve %s: %s", 53993638Smaxim source, hstrerror(h_errno)); 54042337Simp 541111932Sseanc sock_in.sin_len = sizeof sock_in; 542111932Sseanc if ((unsigned)hp->h_length > sizeof(sock_in.sin_addr) || 54399447Smaxim hp->h_length < 0) 54493638Smaxim errx(1, "gethostbyname2: illegal address"); 545111932Sseanc memcpy(&sock_in.sin_addr, hp->h_addr_list[0], 546111932Sseanc sizeof(sock_in.sin_addr)); 54793638Smaxim (void)strncpy(snamebuf, hp->h_name, 54893638Smaxim sizeof(snamebuf) - 1); 54942337Simp snamebuf[sizeof(snamebuf) - 1] = '\0'; 55042337Simp shostname = snamebuf; 55142337Simp } 552111932Sseanc if (bind(s, (struct sockaddr *)&sock_in, sizeof sock_in) == -1) 55342337Simp err(1, "bind"); 55442337Simp } 55542337Simp 55679403Smjacob bzero(&whereto, sizeof(whereto)); 55779403Smjacob to = &whereto; 5581558Srgrimes to->sin_family = AF_INET; 55979403Smjacob to->sin_len = sizeof *to; 56023247Swollman if (inet_aton(target, &to->sin_addr) != 0) { 5611558Srgrimes hostname = target; 56223247Swollman } else { 56323247Swollman hp = gethostbyname2(target, AF_INET); 56423247Swollman if (!hp) 56523247Swollman errx(EX_NOHOST, "cannot resolve %s: %s", 56693638Smaxim target, hstrerror(h_errno)); 56723247Swollman 568111932Sseanc if ((unsigned)hp->h_length > sizeof(to->sin_addr)) 56993638Smaxim errx(1, "gethostbyname2 returned an illegal address"); 57023247Swollman memcpy(&to->sin_addr, hp->h_addr_list[0], sizeof to->sin_addr); 5711558Srgrimes (void)strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1); 57231956Simp hnamebuf[sizeof(hnamebuf) - 1] = '\0'; 5731558Srgrimes hostname = hnamebuf; 5741558Srgrimes } 5751558Srgrimes 57623247Swollman if (options & F_FLOOD && options & F_INTERVAL) 57723247Swollman errx(EX_USAGE, "-f and -i: incompatible options"); 5781558Srgrimes 57923247Swollman if (options & F_FLOOD && IN_MULTICAST(ntohl(to->sin_addr.s_addr))) 58093638Smaxim errx(EX_USAGE, 58193638Smaxim "-f flag cannot be used with multicast destination"); 58223247Swollman if (options & (F_MIF | F_NOLOOP | F_MTTL) 58323247Swollman && !IN_MULTICAST(ntohl(to->sin_addr.s_addr))) 58493638Smaxim errx(EX_USAGE, 58593638Smaxim "-I, -L, -T flags cannot be used with unicast destination"); 58623247Swollman 587112568Smdodd if (datalen >= TIMEVAL_LEN) /* can we time transfer */ 5881558Srgrimes timing = 1; 58923247Swollman 5901558Srgrimes if (!(options & F_PINGFILLED)) 591112568Smdodd for (i = TIMEVAL_LEN; i < datalen; ++i) 5921558Srgrimes *datap++ = i; 5931558Srgrimes 5941558Srgrimes ident = getpid() & 0xFFFF; 5951558Srgrimes 59617474Sfenner if (s < 0) { 59717474Sfenner errno = sockerrno; 59823247Swollman err(EX_OSERR, "socket"); 5991558Srgrimes } 6001558Srgrimes hold = 1; 6011558Srgrimes if (options & F_SO_DEBUG) 6021558Srgrimes (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold, 6031558Srgrimes sizeof(hold)); 6041558Srgrimes if (options & F_SO_DONTROUTE) 6051558Srgrimes (void)setsockopt(s, SOL_SOCKET, SO_DONTROUTE, (char *)&hold, 6061558Srgrimes sizeof(hold)); 60755505Sshin#ifdef IPSEC 60855505Sshin#ifdef IPSEC_POLICY_IPSEC 60955505Sshin if (options & F_POLICY) { 61055505Sshin char *buf; 61155505Sshin if (policy_in != NULL) { 61255505Sshin buf = ipsec_set_policy(policy_in, strlen(policy_in)); 61355505Sshin if (buf == NULL) 61468905Skris errx(EX_CONFIG, "%s", ipsec_strerror()); 61555505Sshin if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY, 61655505Sshin buf, ipsec_get_policylen(buf)) < 0) 61793638Smaxim err(EX_CONFIG, 61893638Smaxim "ipsec policy cannot be configured"); 61955505Sshin free(buf); 62055505Sshin } 6211558Srgrimes 62255505Sshin if (policy_out != NULL) { 62355505Sshin buf = ipsec_set_policy(policy_out, strlen(policy_out)); 62455505Sshin if (buf == NULL) 62568905Skris errx(EX_CONFIG, "%s", ipsec_strerror()); 62655505Sshin if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY, 62755505Sshin buf, ipsec_get_policylen(buf)) < 0) 62893638Smaxim err(EX_CONFIG, 62993638Smaxim "ipsec policy cannot be configured"); 63055505Sshin free(buf); 63155505Sshin } 63255505Sshin } 63355505Sshin#endif /*IPSEC_POLICY_IPSEC*/ 63455505Sshin#endif /*IPSEC*/ 63555505Sshin 636109731Smaxim if (options & F_HDRINCL) { 637109731Smaxim ip = (struct ip*)outpackhdr; 638109731Smaxim if (!(options & (F_TTL | F_MTTL))) { 639109731Smaxim mib[0] = CTL_NET; 640109731Smaxim mib[1] = PF_INET; 641109731Smaxim mib[2] = IPPROTO_IP; 642109731Smaxim mib[3] = IPCTL_DEFTTL; 643109731Smaxim sz = sizeof(ttl); 644109731Smaxim if (sysctl(mib, 4, &ttl, &sz, NULL, 0) == -1) 645109731Smaxim err(1, "sysctl(net.inet.ip.ttl)"); 646109731Smaxim } 647109731Smaxim setsockopt(s, IPPROTO_IP, IP_HDRINCL, &hold, sizeof(hold)); 648109731Smaxim ip->ip_v = IPVERSION; 649109731Smaxim ip->ip_hl = sizeof(struct ip) >> 2; 650109731Smaxim ip->ip_tos = tos; 651109731Smaxim ip->ip_id = 0; 652109731Smaxim ip->ip_off = df ? IP_DF : 0; 653109731Smaxim ip->ip_ttl = ttl; 654109731Smaxim ip->ip_p = IPPROTO_ICMP; 655111932Sseanc ip->ip_src.s_addr = source ? sock_in.sin_addr.s_addr : INADDR_ANY; 656109731Smaxim ip->ip_dst = to->sin_addr; 657109731Smaxim } 6581558Srgrimes /* record route option */ 6591558Srgrimes if (options & F_RROUTE) { 6601558Srgrimes#ifdef IP_OPTIONS 66136378Sfenner bzero(rspace, sizeof(rspace)); 6621558Srgrimes rspace[IPOPT_OPTVAL] = IPOPT_RR; 66336378Sfenner rspace[IPOPT_OLEN] = sizeof(rspace) - 1; 6641558Srgrimes rspace[IPOPT_OFFSET] = IPOPT_MINOFF; 66536378Sfenner rspace[sizeof(rspace) - 1] = IPOPT_EOL; 6661558Srgrimes if (setsockopt(s, IPPROTO_IP, IP_OPTIONS, rspace, 66723247Swollman sizeof(rspace)) < 0) 66823247Swollman err(EX_OSERR, "setsockopt IP_OPTIONS"); 6691558Srgrimes#else 67023247Swollman errx(EX_UNAVAILABLE, 67193638Smaxim "record route not available in this implementation"); 6721558Srgrimes#endif /* IP_OPTIONS */ 6731558Srgrimes } 6741558Srgrimes 67574029Sru if (options & F_TTL) { 67674029Sru if (setsockopt(s, IPPROTO_IP, IP_TTL, &ttl, 67774029Sru sizeof(ttl)) < 0) { 67874029Sru err(EX_OSERR, "setsockopt IP_TTL"); 67974029Sru } 68074029Sru } 68120540Sfenner if (options & F_NOLOOP) { 68220540Sfenner if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, 68320540Sfenner sizeof(loop)) < 0) { 68423247Swollman err(EX_OSERR, "setsockopt IP_MULTICAST_LOOP"); 68520540Sfenner } 68620540Sfenner } 68720540Sfenner if (options & F_MTTL) { 68874029Sru if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &mttl, 68974029Sru sizeof(mttl)) < 0) { 69023247Swollman err(EX_OSERR, "setsockopt IP_MULTICAST_TTL"); 69120540Sfenner } 69220540Sfenner } 69320540Sfenner if (options & F_MIF) { 69420540Sfenner if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF, &ifaddr, 69520540Sfenner sizeof(ifaddr)) < 0) { 69623247Swollman err(EX_OSERR, "setsockopt IP_MULTICAST_IF"); 69720540Sfenner } 69820540Sfenner } 69936378Sfenner#ifdef SO_TIMESTAMP 70036378Sfenner { int on = 1; 70136378Sfenner if (setsockopt(s, SOL_SOCKET, SO_TIMESTAMP, &on, sizeof(on)) < 0) 70236378Sfenner err(EX_OSERR, "setsockopt SO_TIMESTAMP"); 70336378Sfenner } 70436378Sfenner#endif 705149086Sglebius if (sweepmax) { 706149086Sglebius if (sweepmin >= sweepmax) 707149086Sglebius errx(EX_USAGE, "Maximum packet size must be greater than the minimum packet size"); 70820540Sfenner 709149086Sglebius if (datalen != DEFDATALEN) 710149086Sglebius errx(EX_USAGE, "Packet size and ping sweep are mutually exclusive"); 711149086Sglebius 712149086Sglebius if (npackets > 0) { 713149086Sglebius snpackets = npackets; 714149086Sglebius npackets = 0; 715149086Sglebius } else 716149086Sglebius snpackets = 1; 717149086Sglebius datalen = sweepmin; 718149086Sglebius send_len = icmp_len + sweepmin; 719149086Sglebius } 720149086Sglebius if (options & F_SWEEP && !sweepmax) 721149086Sglebius errx(EX_USAGE, "Maximum sweep size must be specified"); 722149086Sglebius 7231558Srgrimes /* 7241558Srgrimes * When pinging the broadcast address, you can get a lot of answers. 7251558Srgrimes * Doing something so evil is useful if you are trying to stress the 7261558Srgrimes * ethernet, or just want to fill the arp cache to get some stuff for 72723247Swollman * /etc/ethers. But beware: RFC 1122 allows hosts to ignore broadcast 72823247Swollman * or multicast pings if they wish. 7291558Srgrimes */ 73099447Smaxim 73199447Smaxim /* 73299447Smaxim * XXX receive buffer needs undetermined space for mbuf overhead 73399447Smaxim * as well. 73499447Smaxim */ 73599447Smaxim hold = IP_MAXPACKET + 128; 7361558Srgrimes (void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold, 7371558Srgrimes sizeof(hold)); 738109733Smaxim if (uid == 0) 73979018Srwatson (void)setsockopt(s, SOL_SOCKET, SO_SNDBUF, (char *)&hold, 74079018Srwatson sizeof(hold)); 74179018Srwatson 74242337Simp if (to->sin_family == AF_INET) { 74342337Simp (void)printf("PING %s (%s)", hostname, 74442337Simp inet_ntoa(to->sin_addr)); 74542337Simp if (source) 74642337Simp (void)printf(" from %s", shostname); 747149086Sglebius if (sweepmax) 748149086Sglebius (void)printf(": (%d ... %d) data bytes\n", 749149086Sglebius sweepmin, sweepmax); 750149086Sglebius else 751149086Sglebius (void)printf(": %d data bytes\n", datalen); 752149086Sglebius 753149086Sglebius } else { 754149086Sglebius if (sweepmax) 755149086Sglebius (void)printf("PING %s: (%d ... %d) data bytes\n", 756149086Sglebius hostname, sweepmin, sweepmax); 757149086Sglebius else 758149086Sglebius (void)printf("PING %s: %d data bytes\n", hostname, datalen); 759149086Sglebius } 7601558Srgrimes 76120280Sbde /* 76227354Ssef * Use sigaction() instead of signal() to get unambiguous semantics, 76327354Ssef * in particular with SA_RESTART not set. 76420280Sbde */ 76527354Ssef 76620205Spst sigemptyset(&si_sa.sa_mask); 76720195Ssef si_sa.sa_flags = 0; 76827354Ssef 76927354Ssef si_sa.sa_handler = stopit; 77027354Ssef if (sigaction(SIGINT, &si_sa, 0) == -1) { 77127354Ssef err(EX_OSERR, "sigaction SIGINT"); 77227354Ssef } 77327354Ssef 77427354Ssef si_sa.sa_handler = status; 77520195Ssef if (sigaction(SIGINFO, &si_sa, 0) == -1) { 77623385Simp err(EX_OSERR, "sigaction"); 77720195Ssef } 77820195Ssef 77956342Sbillf if (alarmtimeout > 0) { 78056342Sbillf si_sa.sa_handler = stopit; 78156342Sbillf if (sigaction(SIGALRM, &si_sa, 0) == -1) 78256342Sbillf err(EX_OSERR, "sigaction SIGALRM"); 78356342Sbillf } 78456342Sbillf 78536378Sfenner bzero(&msg, sizeof(msg)); 78636378Sfenner msg.msg_name = (caddr_t)&from; 78736378Sfenner msg.msg_iov = &iov; 78836378Sfenner msg.msg_iovlen = 1; 78936378Sfenner#ifdef SO_TIMESTAMP 79036378Sfenner msg.msg_control = (caddr_t)ctrl; 79136378Sfenner#endif 79236378Sfenner iov.iov_base = packet; 793117548Smaxim iov.iov_len = IP_MAXPACKET; 79436378Sfenner 79589349Sru if (preload == 0) 79689349Sru pinger(); /* send the first ping */ 79789349Sru else { 79889349Sru if (npackets != 0 && preload > npackets) 79989349Sru preload = npackets; 80089349Sru while (preload--) /* fire off them quickies */ 80189349Sru pinger(); 80289349Sru } 80389349Sru (void)gettimeofday(&last, NULL); 8041558Srgrimes 80536378Sfenner if (options & F_FLOOD) { 80636378Sfenner intvl.tv_sec = 0; 80736378Sfenner intvl.tv_usec = 10000; 80836378Sfenner } else { 80938549Sdillon intvl.tv_sec = interval / 1000; 81038549Sdillon intvl.tv_usec = interval % 1000 * 1000; 81136378Sfenner } 8121558Srgrimes 813109733Smaxim almost_done = 0; 81427533Sbde while (!finish_up) { 815109733Smaxim struct timeval now, timeout; 81636378Sfenner fd_set rfds; 817109733Smaxim int cc, n; 8181558Srgrimes 81920280Sbde check_status(); 820111932Sseanc if ((unsigned)s >= FD_SETSIZE) 821103146Snectar errx(EX_OSERR, "descriptor too large"); 82236378Sfenner FD_ZERO(&rfds); 82336378Sfenner FD_SET(s, &rfds); 82436378Sfenner (void)gettimeofday(&now, NULL); 82536378Sfenner timeout.tv_sec = last.tv_sec + intvl.tv_sec - now.tv_sec; 82636378Sfenner timeout.tv_usec = last.tv_usec + intvl.tv_usec - now.tv_usec; 82736378Sfenner while (timeout.tv_usec < 0) { 82836378Sfenner timeout.tv_usec += 1000000; 82936378Sfenner timeout.tv_sec--; 8301558Srgrimes } 83137671Scharnier while (timeout.tv_usec >= 1000000) { 83236378Sfenner timeout.tv_usec -= 1000000; 83336378Sfenner timeout.tv_sec++; 83436378Sfenner } 83536378Sfenner if (timeout.tv_sec < 0) 836237942Sdelphij timerclear(&timeout); 83736378Sfenner n = select(s + 1, &rfds, NULL, NULL, &timeout); 83846643Smckay if (n < 0) 83946643Smckay continue; /* Must be EINTR. */ 84036378Sfenner if (n == 1) { 841111932Sseanc struct timeval *tv = NULL; 84236378Sfenner#ifdef SO_TIMESTAMP 84336378Sfenner struct cmsghdr *cmsg = (struct cmsghdr *)&ctrl; 84436378Sfenner 84536378Sfenner msg.msg_controllen = sizeof(ctrl); 84636378Sfenner#endif 84736378Sfenner msg.msg_namelen = sizeof(from); 84836378Sfenner if ((cc = recvmsg(s, &msg, 0)) < 0) { 84936378Sfenner if (errno == EINTR) 85036378Sfenner continue; 85137671Scharnier warn("recvmsg"); 8521558Srgrimes continue; 85336378Sfenner } 85436378Sfenner#ifdef SO_TIMESTAMP 85536378Sfenner if (cmsg->cmsg_level == SOL_SOCKET && 85636378Sfenner cmsg->cmsg_type == SCM_TIMESTAMP && 857111932Sseanc cmsg->cmsg_len == CMSG_LEN(sizeof *tv)) { 85836713Sjb /* Copy to avoid alignment problems: */ 859103229Speter memcpy(&now, CMSG_DATA(cmsg), sizeof(now)); 860111932Sseanc tv = &now; 86136713Sjb } 86236378Sfenner#endif 863111932Sseanc if (tv == NULL) { 86436378Sfenner (void)gettimeofday(&now, NULL); 865111932Sseanc tv = &now; 86636378Sfenner } 867111932Sseanc pr_pack((char *)packet, cc, &from, tv); 868111932Sseanc if ((options & F_ONCE && nreceived) || 869111932Sseanc (npackets && nreceived >= npackets)) 87036378Sfenner break; 8711558Srgrimes } 87246643Smckay if (n == 0 || options & F_FLOOD) { 873149086Sglebius if (sweepmax && sntransmitted == snpackets) { 874149086Sglebius for (i = 0; i < sweepincr ; ++i) 875149086Sglebius *datap++ = i; 876149086Sglebius datalen += sweepincr; 877149086Sglebius if (datalen > sweepmax) 878149086Sglebius break; 879149086Sglebius send_len = icmp_len + datalen; 880149086Sglebius sntransmitted = 0; 881149086Sglebius } 88236378Sfenner if (!npackets || ntransmitted < npackets) 88336378Sfenner pinger(); 88436378Sfenner else { 88536378Sfenner if (almost_done) 88636378Sfenner break; 88736378Sfenner almost_done = 1; 88846643Smckay intvl.tv_usec = 0; 88936378Sfenner if (nreceived) { 89036378Sfenner intvl.tv_sec = 2 * tmax / 1000; 89136378Sfenner if (!intvl.tv_sec) 89236378Sfenner intvl.tv_sec = 1; 893157535Sglebius } else { 894157535Sglebius intvl.tv_sec = waittime / 1000; 895157535Sglebius intvl.tv_usec = waittime % 1000 * 1000; 896157535Sglebius } 89736378Sfenner } 89836378Sfenner (void)gettimeofday(&last, NULL); 89983940Siedowse if (ntransmitted - nreceived - 1 > nmissedmax) { 90083940Siedowse nmissedmax = ntransmitted - nreceived - 1; 90183940Siedowse if (options & F_MISSED) 90283940Siedowse (void)write(STDOUT_FILENO, &BBELL, 1); 90383940Siedowse } 90436378Sfenner } 9051558Srgrimes } 90627533Sbde finish(); 9071558Srgrimes /* NOTREACHED */ 90823251Simp exit(0); /* Make the compiler happy */ 9091558Srgrimes} 9101558Srgrimes 9111558Srgrimes/* 91227533Sbde * stopit -- 91327533Sbde * Set the global bit that causes the main loop to quit. 91427533Sbde * Do NOT call finish() from here, since finish() does far too much 91527533Sbde * to be called from a signal handler. 91627299Sjulian */ 91727299Sjulianvoid 918209366Sedstopit(int sig __unused) 91927299Sjulian{ 92093035Sobrien 921125605Siedowse /* 922125605Siedowse * When doing reverse DNS lookups, the finish_up flag might not 923125605Siedowse * be noticed for a while. Just exit if we get a second SIGINT. 924125605Siedowse */ 925125605Siedowse if (!(options & F_NUMERIC) && finish_up) 926125605Siedowse _exit(nreceived ? 0 : 2); 92727299Sjulian finish_up = 1; 92827299Sjulian} 92927299Sjulian 93027299Sjulian/* 9311558Srgrimes * pinger -- 9321558Srgrimes * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet 9331558Srgrimes * will be added on by the kernel. The ID field is our UNIX process ID, 934111765Smdodd * and the sequence number is an ascending integer. The first TIMEVAL_LEN 93599447Smaxim * bytes of the data portion are used to hold a UNIX "timeval" struct in 93699447Smaxim * host byte-order, to compute the round-trip time. 9371558Srgrimes */ 93823247Swollmanstatic void 93923247Swollmanpinger(void) 9401558Srgrimes{ 941111765Smdodd struct timeval now; 942135957Smaxim struct tv32 tv32; 943109731Smaxim struct ip *ip; 94492806Sobrien struct icmp *icp; 94593035Sobrien int cc, i; 946109731Smaxim u_char *packet; 9471558Srgrimes 948109731Smaxim packet = outpack; 9491558Srgrimes icp = (struct icmp *)outpack; 950111765Smdodd icp->icmp_type = icmp_type; 9511558Srgrimes icp->icmp_code = 0; 9521558Srgrimes icp->icmp_cksum = 0; 95391432Sfenner icp->icmp_seq = htons(ntransmitted); 9541558Srgrimes icp->icmp_id = ident; /* ID */ 9551558Srgrimes 95691432Sfenner CLR(ntransmitted % mx_dup_ck); 9571558Srgrimes 958111765Smdodd if ((options & F_TIME) || timing) { 959111765Smdodd (void)gettimeofday(&now, NULL); 9601558Srgrimes 961135957Smaxim tv32.tv32_sec = htonl(now.tv_sec); 962135957Smaxim tv32.tv32_usec = htonl(now.tv_usec); 963111765Smdodd if (options & F_TIME) 964111765Smdodd icp->icmp_otime = htonl((now.tv_sec % (24*60*60)) 965111765Smdodd * 1000 + now.tv_usec / 1000); 966111765Smdodd if (timing) 967135957Smaxim bcopy((void *)&tv32, 968117549Smaxim (void *)&outpack[ICMP_MINLEN + phdr_len], 969135957Smaxim sizeof(tv32)); 970111765Smdodd } 9711558Srgrimes 972117549Smaxim cc = ICMP_MINLEN + phdr_len + datalen; 973111765Smdodd 9741558Srgrimes /* compute ICMP checksum here */ 9751558Srgrimes icp->icmp_cksum = in_cksum((u_short *)icp, cc); 9761558Srgrimes 977109731Smaxim if (options & F_HDRINCL) { 978109731Smaxim cc += sizeof(struct ip); 979109731Smaxim ip = (struct ip *)outpackhdr; 980109731Smaxim ip->ip_len = cc; 981109731Smaxim ip->ip_sum = in_cksum((u_short *)outpackhdr, cc); 982109731Smaxim packet = outpackhdr; 983109731Smaxim } 984109731Smaxim i = sendto(s, (char *)packet, cc, 0, (struct sockaddr *)&whereto, 98579403Smjacob sizeof(whereto)); 9861558Srgrimes 9871558Srgrimes if (i < 0 || i != cc) { 98823247Swollman if (i < 0) { 98927533Sbde if (options & F_FLOOD && errno == ENOBUFS) { 99027299Sjulian usleep(FLOOD_BACKOFF); 99127299Sjulian return; 99227299Sjulian } 99323247Swollman warn("sendto"); 99423247Swollman } else { 99523247Swollman warn("%s: partial write: %d of %d bytes", 99635216Sphk hostname, i, cc); 99723247Swollman } 99827945Sjulian } 99927945Sjulian ntransmitted++; 1000149086Sglebius sntransmitted++; 10011558Srgrimes if (!(options & F_QUIET) && options & F_FLOOD) 10021558Srgrimes (void)write(STDOUT_FILENO, &DOT, 1); 10031558Srgrimes} 10041558Srgrimes 10051558Srgrimes/* 10061558Srgrimes * pr_pack -- 10071558Srgrimes * Print out the packet, if it came from us. This logic is necessary 10081558Srgrimes * because ALL readers of the ICMP socket get a copy of ALL ICMP packets 10091558Srgrimes * which arrive ('tis only fair). This permits multiple copies of this 10101558Srgrimes * program to be run without having intermingled output (or statistics!). 10111558Srgrimes */ 101223247Swollmanstatic void 1013209366Sedpr_pack(char *buf, int cc, struct sockaddr_in *from, struct timeval *tv) 10141558Srgrimes{ 1015103229Speter struct in_addr ina; 1016103229Speter u_char *cp, *dp; 101792806Sobrien struct icmp *icp; 101893035Sobrien struct ip *ip; 1019103227Speter const void *tp; 102093035Sobrien double triptime; 1021117548Smaxim int dupflag, hlen, i, j, recv_len, seq; 10221558Srgrimes static int old_rrlen; 10231558Srgrimes static char old_rr[MAX_IPOPTLEN]; 10241558Srgrimes 10251558Srgrimes /* Check the IP header */ 10261558Srgrimes ip = (struct ip *)buf; 10271558Srgrimes hlen = ip->ip_hl << 2; 1028117548Smaxim recv_len = cc; 10291558Srgrimes if (cc < hlen + ICMP_MINLEN) { 10301558Srgrimes if (options & F_VERBOSE) 103123247Swollman warn("packet too short (%d bytes) from %s", cc, 103223247Swollman inet_ntoa(from->sin_addr)); 10331558Srgrimes return; 10341558Srgrimes } 10351558Srgrimes 10361558Srgrimes /* Now the ICMP part */ 10371558Srgrimes cc -= hlen; 10381558Srgrimes icp = (struct icmp *)(buf + hlen); 1039111765Smdodd if (icp->icmp_type == icmp_type_rsp) { 10401558Srgrimes if (icp->icmp_id != ident) 10411558Srgrimes return; /* 'Twas not our ECHO */ 10421558Srgrimes ++nreceived; 104327533Sbde triptime = 0.0; 10441558Srgrimes if (timing) { 104536089Sjb struct timeval tv1; 1046135957Smaxim struct tv32 tv32; 10471558Srgrimes#ifndef icmp_data 1048103227Speter tp = &icp->icmp_ip; 10491558Srgrimes#else 1050103227Speter tp = icp->icmp_data; 10511558Srgrimes#endif 1052133723Sstefanf tp = (const char *)tp + phdr_len; 1053110009Smdodd 1054113217Smdodd if (cc - ICMP_MINLEN - phdr_len >= sizeof(tv1)) { 1055113217Smdodd /* Copy to avoid alignment problems: */ 1056135957Smaxim memcpy(&tv32, tp, sizeof(tv32)); 1057135957Smaxim tv1.tv_sec = ntohl(tv32.tv32_sec); 1058135957Smaxim tv1.tv_usec = ntohl(tv32.tv32_usec); 1059113217Smdodd tvsub(tv, &tv1); 1060113217Smdodd triptime = ((double)tv->tv_sec) * 1000.0 + 1061113217Smdodd ((double)tv->tv_usec) / 1000.0; 1062113217Smdodd tsum += triptime; 1063113217Smdodd tsumsq += triptime * triptime; 1064113217Smdodd if (triptime < tmin) 1065113217Smdodd tmin = triptime; 1066113217Smdodd if (triptime > tmax) 1067113217Smdodd tmax = triptime; 1068113217Smdodd } else 1069113217Smdodd timing = 0; 10701558Srgrimes } 10711558Srgrimes 107291432Sfenner seq = ntohs(icp->icmp_seq); 107391432Sfenner 107491432Sfenner if (TST(seq % mx_dup_ck)) { 10751558Srgrimes ++nrepeats; 10761558Srgrimes --nreceived; 10771558Srgrimes dupflag = 1; 10781558Srgrimes } else { 107991432Sfenner SET(seq % mx_dup_ck); 10801558Srgrimes dupflag = 0; 10811558Srgrimes } 10821558Srgrimes 10831558Srgrimes if (options & F_QUIET) 10841558Srgrimes return; 1085157535Sglebius 1086157535Sglebius if (options & F_WAITTIME && triptime > waittime) { 1087157535Sglebius ++nrcvtimeout; 1088157535Sglebius return; 1089157535Sglebius } 10901558Srgrimes 10911558Srgrimes if (options & F_FLOOD) 10921558Srgrimes (void)write(STDOUT_FILENO, &BSPACE, 1); 10931558Srgrimes else { 10941558Srgrimes (void)printf("%d bytes from %s: icmp_seq=%u", cc, 10951558Srgrimes inet_ntoa(*(struct in_addr *)&from->sin_addr.s_addr), 109691432Sfenner seq); 10971558Srgrimes (void)printf(" ttl=%d", ip->ip_ttl); 10981558Srgrimes if (timing) 10991859Sdg (void)printf(" time=%.3f ms", triptime); 11001558Srgrimes if (dupflag) 11011558Srgrimes (void)printf(" (DUP!)"); 110222417Sdanny if (options & F_AUDIBLE) 110377119Sphk (void)write(STDOUT_FILENO, &BBELL, 1); 1104110009Smdodd if (options & F_MASK) { 1105110009Smdodd /* Just prentend this cast isn't ugly */ 1106110009Smdodd (void)printf(" mask=%s", 1107110009Smdodd pr_addr(*(struct in_addr *)&(icp->icmp_mask))); 1108110009Smdodd } 1109111765Smdodd if (options & F_TIME) { 1110111765Smdodd (void)printf(" tso=%s", pr_ntime(icp->icmp_otime)); 1111111765Smdodd (void)printf(" tsr=%s", pr_ntime(icp->icmp_rtime)); 1112111765Smdodd (void)printf(" tst=%s", pr_ntime(icp->icmp_ttime)); 1113111765Smdodd } 1114117548Smaxim if (recv_len != send_len) { 1115117548Smaxim (void)printf( 1116117548Smaxim "\nwrong total length %d instead of %d", 1117117548Smaxim recv_len, send_len); 1118117548Smaxim } 11191558Srgrimes /* check the data */ 1120111765Smdodd cp = (u_char*)&icp->icmp_data[phdr_len]; 1121117549Smaxim dp = &outpack[ICMP_MINLEN + phdr_len]; 1122113217Smdodd cc -= ICMP_MINLEN + phdr_len; 1123113463Smaxim i = 0; 1124113463Smaxim if (timing) { /* don't check variable timestamp */ 1125113463Smaxim cp += TIMEVAL_LEN; 1126113463Smaxim dp += TIMEVAL_LEN; 1127113463Smaxim cc -= TIMEVAL_LEN; 1128113463Smaxim i += TIMEVAL_LEN; 1129113463Smaxim } 1130113463Smaxim for (; i < datalen && cc > 0; ++i, ++cp, ++dp, --cc) { 11311558Srgrimes if (*cp != *dp) { 11321558Srgrimes (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", 11331558Srgrimes i, *dp, *cp); 113493638Smaxim (void)printf("\ncp:"); 11351558Srgrimes cp = (u_char*)&icp->icmp_data[0]; 113636089Sjb for (i = 0; i < datalen; ++i, ++cp) { 1137117548Smaxim if ((i % 16) == 8) 11381558Srgrimes (void)printf("\n\t"); 1139117548Smaxim (void)printf("%2x ", *cp); 11401558Srgrimes } 114193638Smaxim (void)printf("\ndp:"); 1142117549Smaxim cp = &outpack[ICMP_MINLEN]; 114336089Sjb for (i = 0; i < datalen; ++i, ++cp) { 1144117548Smaxim if ((i % 16) == 8) 114536089Sjb (void)printf("\n\t"); 1146117548Smaxim (void)printf("%2x ", *cp); 114736089Sjb } 11481558Srgrimes break; 11491558Srgrimes } 11501558Srgrimes } 11511558Srgrimes } 11521558Srgrimes } else { 115317724Sfenner /* 115417724Sfenner * We've got something other than an ECHOREPLY. 115517724Sfenner * See if it's a reply to something that we sent. 115617724Sfenner * We can compare IP destination, protocol, 115717724Sfenner * and ICMP type and ID. 115823251Simp * 115923251Simp * Only print all the error messages if we are running 116093638Smaxim * as root to avoid leaking information not normally 116123251Simp * available to those not running as root. 116217724Sfenner */ 116317724Sfenner#ifndef icmp_data 116417724Sfenner struct ip *oip = &icp->icmp_ip; 116517724Sfenner#else 116617724Sfenner struct ip *oip = (struct ip *)icp->icmp_data; 116717724Sfenner#endif 116817724Sfenner struct icmp *oicmp = (struct icmp *)(oip + 1); 116917724Sfenner 117023295Simp if (((options & F_VERBOSE) && uid == 0) || 117117724Sfenner (!(options & F_QUIET2) && 117279403Smjacob (oip->ip_dst.s_addr == whereto.sin_addr.s_addr) && 117317724Sfenner (oip->ip_p == IPPROTO_ICMP) && 117417724Sfenner (oicmp->icmp_type == ICMP_ECHO) && 117517724Sfenner (oicmp->icmp_id == ident))) { 117617724Sfenner (void)printf("%d bytes from %s: ", cc, 117723247Swollman pr_addr(from->sin_addr)); 117817724Sfenner pr_icmph(icp); 117917724Sfenner } else 118017724Sfenner return; 11811558Srgrimes } 11821558Srgrimes 11831558Srgrimes /* Display any IP options */ 11841558Srgrimes cp = (u_char *)buf + sizeof(struct ip); 11851558Srgrimes 11861558Srgrimes for (; hlen > (int)sizeof(struct ip); --hlen, ++cp) 11871558Srgrimes switch (*cp) { 11881558Srgrimes case IPOPT_EOL: 11891558Srgrimes hlen = 0; 11901558Srgrimes break; 11911558Srgrimes case IPOPT_LSRR: 1192109730Smaxim case IPOPT_SSRR: 1193109730Smaxim (void)printf(*cp == IPOPT_LSRR ? 1194109730Smaxim "\nLSRR: " : "\nSSRR: "); 119599446Smaxim j = cp[IPOPT_OLEN] - IPOPT_MINOFF + 1; 11961558Srgrimes hlen -= 2; 119799446Smaxim cp += 2; 1198105624Smaxim if (j >= INADDR_LEN && 1199105624Smaxim j <= hlen - (int)sizeof(struct ip)) { 12001558Srgrimes for (;;) { 120199446Smaxim bcopy(++cp, &ina.s_addr, INADDR_LEN); 120299446Smaxim if (ina.s_addr == 0) 120393638Smaxim (void)printf("\t0.0.0.0"); 120499446Smaxim else 120593638Smaxim (void)printf("\t%s", 120693638Smaxim pr_addr(ina)); 120799446Smaxim hlen -= INADDR_LEN; 120899446Smaxim cp += INADDR_LEN - 1; 120999446Smaxim j -= INADDR_LEN; 121099446Smaxim if (j < INADDR_LEN) 121199446Smaxim break; 121299446Smaxim (void)putchar('\n'); 121399446Smaxim } 121499446Smaxim } else 121599446Smaxim (void)printf("\t(truncated route)\n"); 12161558Srgrimes break; 12171558Srgrimes case IPOPT_RR: 121899446Smaxim j = cp[IPOPT_OLEN]; /* get length */ 121999446Smaxim i = cp[IPOPT_OFFSET]; /* and pointer */ 12201558Srgrimes hlen -= 2; 122199446Smaxim cp += 2; 12221558Srgrimes if (i > j) 12231558Srgrimes i = j; 122499446Smaxim i = i - IPOPT_MINOFF + 1; 122599446Smaxim if (i < 0 || i > (hlen - (int)sizeof(struct ip))) { 122699446Smaxim old_rrlen = 0; 12271558Srgrimes continue; 122899446Smaxim } 12291558Srgrimes if (i == old_rrlen 12301558Srgrimes && !bcmp((char *)cp, old_rr, i) 12311558Srgrimes && !(options & F_FLOOD)) { 12321558Srgrimes (void)printf("\t(same route)"); 12331558Srgrimes hlen -= i; 12341558Srgrimes cp += i; 12351558Srgrimes break; 12361558Srgrimes } 123799446Smaxim old_rrlen = i; 123899446Smaxim bcopy((char *)cp, old_rr, i); 12391558Srgrimes (void)printf("\nRR: "); 124099446Smaxim if (i >= INADDR_LEN && 124199446Smaxim i <= hlen - (int)sizeof(struct ip)) { 124299446Smaxim for (;;) { 124399446Smaxim bcopy(++cp, &ina.s_addr, INADDR_LEN); 124499446Smaxim if (ina.s_addr == 0) 124599446Smaxim (void)printf("\t0.0.0.0"); 124699446Smaxim else 124799446Smaxim (void)printf("\t%s", 124899446Smaxim pr_addr(ina)); 124999446Smaxim hlen -= INADDR_LEN; 125099446Smaxim cp += INADDR_LEN - 1; 125199446Smaxim i -= INADDR_LEN; 125299446Smaxim if (i < INADDR_LEN) 125399446Smaxim break; 125499446Smaxim (void)putchar('\n'); 125523247Swollman } 125699446Smaxim } else 125799446Smaxim (void)printf("\t(truncated route)"); 12581558Srgrimes break; 12591558Srgrimes case IPOPT_NOP: 12601558Srgrimes (void)printf("\nNOP"); 12611558Srgrimes break; 12621558Srgrimes default: 12631558Srgrimes (void)printf("\nunknown option %x", *cp); 12641558Srgrimes break; 12651558Srgrimes } 12661558Srgrimes if (!(options & F_FLOOD)) { 12671558Srgrimes (void)putchar('\n'); 12681558Srgrimes (void)fflush(stdout); 12691558Srgrimes } 12701558Srgrimes} 12711558Srgrimes 12721558Srgrimes/* 12731558Srgrimes * in_cksum -- 12741558Srgrimes * Checksum routine for Internet Protocol family headers (C Version) 12751558Srgrimes */ 127623247Swollmanu_short 1277209366Sedin_cksum(u_short *addr, int len) 12781558Srgrimes{ 127993035Sobrien int nleft, sum; 128093035Sobrien u_short *w; 128153191Spb union { 128253369Spb u_short us; 128353369Spb u_char uc[2]; 128453369Spb } last; 128553369Spb u_short answer; 12861558Srgrimes 128793035Sobrien nleft = len; 128893035Sobrien sum = 0; 128993035Sobrien w = addr; 129093035Sobrien 12911558Srgrimes /* 12921558Srgrimes * Our algorithm is simple, using a 32 bit accumulator (sum), we add 12931558Srgrimes * sequential 16 bit words to it, and at the end, fold back all the 12941558Srgrimes * carry bits from the top 16 bits into the lower 16 bits. 12951558Srgrimes */ 12961558Srgrimes while (nleft > 1) { 12971558Srgrimes sum += *w++; 12981558Srgrimes nleft -= 2; 12991558Srgrimes } 13001558Srgrimes 13011558Srgrimes /* mop up an odd byte, if necessary */ 13021558Srgrimes if (nleft == 1) { 130353369Spb last.uc[0] = *(u_char *)w; 130453369Spb last.uc[1] = 0; 130553369Spb sum += last.us; 13061558Srgrimes } 13071558Srgrimes 13081558Srgrimes /* add back carry outs from top 16 bits to low 16 bits */ 13091558Srgrimes sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */ 13101558Srgrimes sum += (sum >> 16); /* add carry */ 131153369Spb answer = ~sum; /* truncate to 16 bits */ 131253369Spb return(answer); 13131558Srgrimes} 13141558Srgrimes 13151558Srgrimes/* 13161558Srgrimes * tvsub -- 13171558Srgrimes * Subtract 2 timeval structs: out = out - in. Out is assumed to 13181558Srgrimes * be >= in. 13191558Srgrimes */ 132023247Swollmanstatic void 1321209366Sedtvsub(struct timeval *out, const struct timeval *in) 13221558Srgrimes{ 132393035Sobrien 13241558Srgrimes if ((out->tv_usec -= in->tv_usec) < 0) { 13251558Srgrimes --out->tv_sec; 13261558Srgrimes out->tv_usec += 1000000; 13271558Srgrimes } 13281558Srgrimes out->tv_sec -= in->tv_sec; 13291558Srgrimes} 13301558Srgrimes 13311558Srgrimes/* 13323792Ssef * status -- 13333792Ssef * Print out statistics when SIGINFO is received. 13343792Ssef */ 13353792Ssef 133623247Swollmanstatic void 1337209366Sedstatus(int sig __unused) 133820280Sbde{ 133993035Sobrien 134020195Ssef siginfo_p = 1; 134120195Ssef} 134220195Ssef 134323247Swollmanstatic void 1344209366Sedcheck_status(void) 13453792Ssef{ 134693035Sobrien 134720195Ssef if (siginfo_p) { 134820195Ssef siginfo_p = 0; 1349161273Sdd (void)fprintf(stderr, "\r%ld/%ld packets received (%.1f%%)", 135020280Sbde nreceived, ntransmitted, 1351115691Smaxim ntransmitted ? nreceived * 100.0 / ntransmitted : 0.0); 1352115691Smaxim if (nreceived && timing) 1353115691Smaxim (void)fprintf(stderr, " %.3f min / %.3f avg / %.3f max", 1354115691Smaxim tmin, tsum / (nreceived + nrepeats), tmax); 1355115691Smaxim (void)fprintf(stderr, "\n"); 135620195Ssef } 13573792Ssef} 13583792Ssef 13593792Ssef/* 13601558Srgrimes * finish -- 13611558Srgrimes * Print out statistics, and give up. 13621558Srgrimes */ 136323247Swollmanstatic void 1364209366Sedfinish(void) 13651558Srgrimes{ 13661558Srgrimes 13671558Srgrimes (void)signal(SIGINT, SIG_IGN); 136827354Ssef (void)signal(SIGALRM, SIG_IGN); 13691558Srgrimes (void)putchar('\n'); 13701558Srgrimes (void)fflush(stdout); 13711558Srgrimes (void)printf("--- %s ping statistics ---\n", hostname); 13721558Srgrimes (void)printf("%ld packets transmitted, ", ntransmitted); 13731558Srgrimes (void)printf("%ld packets received, ", nreceived); 13741558Srgrimes if (nrepeats) 13751558Srgrimes (void)printf("+%ld duplicates, ", nrepeats); 137646080Simp if (ntransmitted) { 13771558Srgrimes if (nreceived > ntransmitted) 13781558Srgrimes (void)printf("-- somebody's printing up packets!"); 13791558Srgrimes else 1380161273Sdd (void)printf("%.1f%% packet loss", 1381161273Sdd ((ntransmitted - nreceived) * 100.0) / 1382161273Sdd ntransmitted); 138346080Simp } 1384157535Sglebius if (nrcvtimeout) 1385157535Sglebius (void)printf(", %ld packets out of wait time", nrcvtimeout); 13861558Srgrimes (void)putchar('\n'); 138727508Swollman if (nreceived && timing) { 138827508Swollman double n = nreceived + nrepeats; 138927508Swollman double avg = tsum / n; 139027508Swollman double vari = tsumsq / n - avg * avg; 139193638Smaxim (void)printf( 139293638Smaxim "round-trip min/avg/max/stddev = %.3f/%.3f/%.3f/%.3f ms\n", 139327508Swollman tmin, avg, tmax, sqrt(vari)); 139427508Swollman } 13953792Ssef 13968871Srgrimes if (nreceived) 13974862Sdg exit(0); 13984862Sdg else 13994862Sdg exit(2); 14001558Srgrimes} 14011558Srgrimes 14021558Srgrimes#ifdef notdef 14031558Srgrimesstatic char *ttab[] = { 14041558Srgrimes "Echo Reply", /* ip + seq + udata */ 14051558Srgrimes "Dest Unreachable", /* net, host, proto, port, frag, sr + IP */ 14061558Srgrimes "Source Quench", /* IP */ 14071558Srgrimes "Redirect", /* redirect type, gateway, + IP */ 14081558Srgrimes "Echo", 14091558Srgrimes "Time Exceeded", /* transit, frag reassem + IP */ 14101558Srgrimes "Parameter Problem", /* pointer + IP */ 14111558Srgrimes "Timestamp", /* id + seq + three timestamps */ 14121558Srgrimes "Timestamp Reply", /* " */ 14131558Srgrimes "Info Request", /* id + sq */ 14141558Srgrimes "Info Reply" /* " */ 14151558Srgrimes}; 14161558Srgrimes#endif 14171558Srgrimes 14181558Srgrimes/* 14191558Srgrimes * pr_icmph -- 14201558Srgrimes * Print a descriptive string about an ICMP header. 14211558Srgrimes */ 142223247Swollmanstatic void 1423209366Sedpr_icmph(struct icmp *icp) 14241558Srgrimes{ 142593035Sobrien 14261558Srgrimes switch(icp->icmp_type) { 14271558Srgrimes case ICMP_ECHOREPLY: 14281558Srgrimes (void)printf("Echo Reply\n"); 14291558Srgrimes /* XXX ID + Seq + Data */ 14301558Srgrimes break; 14311558Srgrimes case ICMP_UNREACH: 14321558Srgrimes switch(icp->icmp_code) { 14331558Srgrimes case ICMP_UNREACH_NET: 14341558Srgrimes (void)printf("Destination Net Unreachable\n"); 14351558Srgrimes break; 14361558Srgrimes case ICMP_UNREACH_HOST: 14371558Srgrimes (void)printf("Destination Host Unreachable\n"); 14381558Srgrimes break; 14391558Srgrimes case ICMP_UNREACH_PROTOCOL: 14401558Srgrimes (void)printf("Destination Protocol Unreachable\n"); 14411558Srgrimes break; 14421558Srgrimes case ICMP_UNREACH_PORT: 14431558Srgrimes (void)printf("Destination Port Unreachable\n"); 14441558Srgrimes break; 14451558Srgrimes case ICMP_UNREACH_NEEDFRAG: 144617724Sfenner (void)printf("frag needed and DF set (MTU %d)\n", 144728059Sfenner ntohs(icp->icmp_nextmtu)); 14481558Srgrimes break; 14491558Srgrimes case ICMP_UNREACH_SRCFAIL: 14501558Srgrimes (void)printf("Source Route Failed\n"); 14511558Srgrimes break; 145217724Sfenner case ICMP_UNREACH_FILTER_PROHIB: 145317724Sfenner (void)printf("Communication prohibited by filter\n"); 145417724Sfenner break; 14551558Srgrimes default: 14561558Srgrimes (void)printf("Dest Unreachable, Bad Code: %d\n", 14571558Srgrimes icp->icmp_code); 14581558Srgrimes break; 14591558Srgrimes } 14601558Srgrimes /* Print returned IP header information */ 14611558Srgrimes#ifndef icmp_data 14621558Srgrimes pr_retip(&icp->icmp_ip); 14631558Srgrimes#else 14641558Srgrimes pr_retip((struct ip *)icp->icmp_data); 14651558Srgrimes#endif 14661558Srgrimes break; 14671558Srgrimes case ICMP_SOURCEQUENCH: 14681558Srgrimes (void)printf("Source Quench\n"); 14691558Srgrimes#ifndef icmp_data 14701558Srgrimes pr_retip(&icp->icmp_ip); 14711558Srgrimes#else 14721558Srgrimes pr_retip((struct ip *)icp->icmp_data); 14731558Srgrimes#endif 14741558Srgrimes break; 14751558Srgrimes case ICMP_REDIRECT: 14761558Srgrimes switch(icp->icmp_code) { 14771558Srgrimes case ICMP_REDIRECT_NET: 14781558Srgrimes (void)printf("Redirect Network"); 14791558Srgrimes break; 14801558Srgrimes case ICMP_REDIRECT_HOST: 14811558Srgrimes (void)printf("Redirect Host"); 14821558Srgrimes break; 14831558Srgrimes case ICMP_REDIRECT_TOSNET: 14841558Srgrimes (void)printf("Redirect Type of Service and Network"); 14851558Srgrimes break; 14861558Srgrimes case ICMP_REDIRECT_TOSHOST: 14871558Srgrimes (void)printf("Redirect Type of Service and Host"); 14881558Srgrimes break; 14891558Srgrimes default: 14901558Srgrimes (void)printf("Redirect, Bad Code: %d", icp->icmp_code); 14911558Srgrimes break; 14921558Srgrimes } 149328059Sfenner (void)printf("(New addr: %s)\n", inet_ntoa(icp->icmp_gwaddr)); 14941558Srgrimes#ifndef icmp_data 14951558Srgrimes pr_retip(&icp->icmp_ip); 14961558Srgrimes#else 14971558Srgrimes pr_retip((struct ip *)icp->icmp_data); 14981558Srgrimes#endif 14991558Srgrimes break; 15001558Srgrimes case ICMP_ECHO: 15011558Srgrimes (void)printf("Echo Request\n"); 15021558Srgrimes /* XXX ID + Seq + Data */ 15031558Srgrimes break; 15041558Srgrimes case ICMP_TIMXCEED: 15051558Srgrimes switch(icp->icmp_code) { 15061558Srgrimes case ICMP_TIMXCEED_INTRANS: 15071558Srgrimes (void)printf("Time to live exceeded\n"); 15081558Srgrimes break; 15091558Srgrimes case ICMP_TIMXCEED_REASS: 15101558Srgrimes (void)printf("Frag reassembly time exceeded\n"); 15111558Srgrimes break; 15121558Srgrimes default: 15131558Srgrimes (void)printf("Time exceeded, Bad Code: %d\n", 15141558Srgrimes icp->icmp_code); 15151558Srgrimes break; 15161558Srgrimes } 15171558Srgrimes#ifndef icmp_data 15181558Srgrimes pr_retip(&icp->icmp_ip); 15191558Srgrimes#else 15201558Srgrimes pr_retip((struct ip *)icp->icmp_data); 15211558Srgrimes#endif 15221558Srgrimes break; 15231558Srgrimes case ICMP_PARAMPROB: 15241558Srgrimes (void)printf("Parameter problem: pointer = 0x%02x\n", 15251558Srgrimes icp->icmp_hun.ih_pptr); 15261558Srgrimes#ifndef icmp_data 15271558Srgrimes pr_retip(&icp->icmp_ip); 15281558Srgrimes#else 15291558Srgrimes pr_retip((struct ip *)icp->icmp_data); 15301558Srgrimes#endif 15311558Srgrimes break; 15321558Srgrimes case ICMP_TSTAMP: 15331558Srgrimes (void)printf("Timestamp\n"); 15341558Srgrimes /* XXX ID + Seq + 3 timestamps */ 15351558Srgrimes break; 15361558Srgrimes case ICMP_TSTAMPREPLY: 15371558Srgrimes (void)printf("Timestamp Reply\n"); 15381558Srgrimes /* XXX ID + Seq + 3 timestamps */ 15391558Srgrimes break; 15401558Srgrimes case ICMP_IREQ: 15411558Srgrimes (void)printf("Information Request\n"); 15421558Srgrimes /* XXX ID + Seq */ 15431558Srgrimes break; 15441558Srgrimes case ICMP_IREQREPLY: 15451558Srgrimes (void)printf("Information Reply\n"); 15461558Srgrimes /* XXX ID + Seq */ 15471558Srgrimes break; 15481558Srgrimes case ICMP_MASKREQ: 15491558Srgrimes (void)printf("Address Mask Request\n"); 15501558Srgrimes break; 15511558Srgrimes case ICMP_MASKREPLY: 15521558Srgrimes (void)printf("Address Mask Reply\n"); 15531558Srgrimes break; 155417724Sfenner case ICMP_ROUTERADVERT: 155517724Sfenner (void)printf("Router Advertisement\n"); 155617724Sfenner break; 155717724Sfenner case ICMP_ROUTERSOLICIT: 155817724Sfenner (void)printf("Router Solicitation\n"); 155917724Sfenner break; 15601558Srgrimes default: 15611558Srgrimes (void)printf("Bad ICMP type: %d\n", icp->icmp_type); 15621558Srgrimes } 15631558Srgrimes} 15641558Srgrimes 15651558Srgrimes/* 15661558Srgrimes * pr_iph -- 15671558Srgrimes * Print an IP header with options. 15681558Srgrimes */ 156923247Swollmanstatic void 1570209366Sedpr_iph(struct ip *ip) 15711558Srgrimes{ 157293035Sobrien u_char *cp; 15731558Srgrimes int hlen; 15741558Srgrimes 15751558Srgrimes hlen = ip->ip_hl << 2; 15761558Srgrimes cp = (u_char *)ip + 20; /* point to options */ 15771558Srgrimes 157817724Sfenner (void)printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst\n"); 15791558Srgrimes (void)printf(" %1x %1x %02x %04x %04x", 158017724Sfenner ip->ip_v, ip->ip_hl, ip->ip_tos, ntohs(ip->ip_len), 158117724Sfenner ntohs(ip->ip_id)); 158236089Sjb (void)printf(" %1lx %04lx", 158336089Sjb (u_long) (ntohl(ip->ip_off) & 0xe000) >> 13, 158436089Sjb (u_long) ntohl(ip->ip_off) & 0x1fff); 158517724Sfenner (void)printf(" %02x %02x %04x", ip->ip_ttl, ip->ip_p, 158617724Sfenner ntohs(ip->ip_sum)); 15871558Srgrimes (void)printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->ip_src.s_addr)); 15881558Srgrimes (void)printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->ip_dst.s_addr)); 158917724Sfenner /* dump any option bytes */ 15901558Srgrimes while (hlen-- > 20) { 15911558Srgrimes (void)printf("%02x", *cp++); 15921558Srgrimes } 15931558Srgrimes (void)putchar('\n'); 15941558Srgrimes} 15951558Srgrimes 15961558Srgrimes/* 15971558Srgrimes * pr_addr -- 15981558Srgrimes * Return an ascii host address as a dotted quad and optionally with 15991558Srgrimes * a hostname. 16001558Srgrimes */ 160123247Swollmanstatic char * 1602209366Sedpr_addr(struct in_addr ina) 16031558Srgrimes{ 16041558Srgrimes struct hostent *hp; 160523251Simp static char buf[16 + 3 + MAXHOSTNAMELEN]; 16061558Srgrimes 16071558Srgrimes if ((options & F_NUMERIC) || 160823247Swollman !(hp = gethostbyaddr((char *)&ina, 4, AF_INET))) 160923247Swollman return inet_ntoa(ina); 16101558Srgrimes else 161117320Speter (void)snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name, 161223247Swollman inet_ntoa(ina)); 16131558Srgrimes return(buf); 16141558Srgrimes} 16151558Srgrimes 16161558Srgrimes/* 16171558Srgrimes * pr_retip -- 16181558Srgrimes * Dump some info on a returned (via ICMP) IP packet. 16191558Srgrimes */ 162023247Swollmanstatic void 1621209366Sedpr_retip(struct ip *ip) 16221558Srgrimes{ 162393035Sobrien u_char *cp; 16241558Srgrimes int hlen; 16251558Srgrimes 16261558Srgrimes pr_iph(ip); 16271558Srgrimes hlen = ip->ip_hl << 2; 16281558Srgrimes cp = (u_char *)ip + hlen; 16291558Srgrimes 16301558Srgrimes if (ip->ip_p == 6) 16311558Srgrimes (void)printf("TCP: from port %u, to port %u (decimal)\n", 16321558Srgrimes (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); 16331558Srgrimes else if (ip->ip_p == 17) 16341558Srgrimes (void)printf("UDP: from port %u, to port %u (decimal)\n", 16351558Srgrimes (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); 16361558Srgrimes} 16371558Srgrimes 1638111765Smdoddstatic char * 1639209366Sedpr_ntime(n_time timestamp) 1640111765Smdodd{ 1641111765Smdodd static char buf[10]; 1642117550Smaxim int hour, min, sec; 1643111765Smdodd 1644117550Smaxim sec = ntohl(timestamp) / 1000; 1645117550Smaxim hour = sec / 60 / 60; 1646117550Smaxim min = (sec % (60 * 60)) / 60; 1647117550Smaxim sec = (sec % (60 * 60)) % 60; 1648111765Smdodd 1649117550Smaxim (void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d", hour, min, sec); 1650111765Smdodd 1651111765Smdodd return (buf); 1652111765Smdodd} 1653111765Smdodd 165423247Swollmanstatic void 1655209366Sedfill(char *bp, char *patp) 16561558Srgrimes{ 165793035Sobrien char *cp; 165893035Sobrien int pat[16]; 165999447Smaxim u_int ii, jj, kk; 16601558Srgrimes 166123247Swollman for (cp = patp; *cp; cp++) { 166223247Swollman if (!isxdigit(*cp)) 166393638Smaxim errx(EX_USAGE, 166493638Smaxim "patterns must be specified as hex digits"); 166593638Smaxim 166623247Swollman } 16671558Srgrimes ii = sscanf(patp, 16681558Srgrimes "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x", 16691558Srgrimes &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6], 16701558Srgrimes &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12], 16711558Srgrimes &pat[13], &pat[14], &pat[15]); 16721558Srgrimes 16731558Srgrimes if (ii > 0) 1674112568Smdodd for (kk = 0; kk <= maxpayload - (TIMEVAL_LEN + ii); kk += ii) 16751558Srgrimes for (jj = 0; jj < ii; ++jj) 16761558Srgrimes bp[jj + kk] = pat[jj]; 16771558Srgrimes if (!(options & F_QUIET)) { 16781558Srgrimes (void)printf("PATTERN: 0x"); 16791558Srgrimes for (jj = 0; jj < ii; ++jj) 16801558Srgrimes (void)printf("%02x", bp[jj] & 0xFF); 16811558Srgrimes (void)printf("\n"); 16821558Srgrimes } 16831558Srgrimes} 16841558Srgrimes 1685112228Sru#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 1686112228Sru#define SECOPT " [-P policy]" 1687112228Sru#else 1688112228Sru#define SECOPT "" 1689112228Sru#endif 169023247Swollmanstatic void 1691209366Sedusage(void) 16921558Srgrimes{ 1693112228Sru 1694157535Sglebius (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", 1695152996Sru"usage: ping [-AaDdfnoQqRrv] [-c count] [-G sweepmaxsize] [-g sweepminsize]", 1696152996Sru" [-h sweepincrsize] [-i wait] [-l preload] [-M mask | time] [-m ttl]", 1697152996Sru" " SECOPT " [-p pattern] [-S src_addr] [-s packetsize] [-t timeout]", 1698157535Sglebius" [-W waittime] [-z tos] host", 1699112110Sru" ping [-AaDdfLnoQqRrv] [-c count] [-I iface] [-i wait] [-l preload]", 1700112228Sru" [-M mask | time] [-m ttl]" SECOPT " [-p pattern] [-S src_addr]", 1701157535Sglebius" [-s packetsize] [-T ttl] [-t timeout] [-W waittime]", 1702157535Sglebius" [-z tos] mcast-group"); 170323247Swollman exit(EX_USAGE); 17041558Srgrimes} 1705