summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--utils/ping.c1156
1 files changed, 0 insertions, 1156 deletions
diff --git a/utils/ping.c b/utils/ping.c
deleted file mode 100644
index 2234f44c..00000000
--- a/utils/ping.c
+++ /dev/null
@@ -1,1156 +0,0 @@
-/*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Mike Muuss.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-char copyright[] =
- "@(#) Copyright (c) 1989 The Regents of the University of California.\n"
- "All rights reserved.\n";
-/*
- * From: @(#)ping.c 5.9 (Berkeley) 5/12/91
- */
-char rcsid[] = "$Id: ping.c,v 1.4 2002/05/28 23:56:34 roland Exp $";
-char pkg[] = "netkit-base-0.10";
-
-/*
- * P I N G . C
- *
- * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
- * measure round-trip-delays and packet loss across network paths.
- *
- * Author -
- * Mike Muuss
- * U. S. Army Ballistic Research Laboratory
- * December, 1983
- *
- * Status -
- * Public Domain. Distribution Unlimited.
- * Bugs -
- * More statistics could always be gathered.
- * This program has to run SUID to ROOT to access the ICMP socket.
- */
-
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/file.h>
-#include <sys/time.h>
-#include <sys/signal.h>
-
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <netinet/ip_icmp.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include <cthreads.h>
-/*
- * Note: on some systems dropping root makes the process dumpable or
- * traceable. In that case if you enable dropping root and someone
- * traces ping, they get control of a raw socket and can start
- * spoofing whatever packets they like. SO BE CAREFUL.
- */
-#ifdef __linux__
-#define SAFE_TO_DROP_ROOT
-#endif
-
-#define DEFDATALEN (64 - 8) /* default data length */
-#define MAXIPLEN 60
-#define MAXICMPLEN 76
-#define MAXPACKET (65536 - 60 - 8)/* max packet size */
-#define MAXWAIT 10 /* max seconds to wait for response */
-#define NROUTES 9 /* number of record route slots */
-
-#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
-#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
-#define SET(bit) (A(bit) |= B(bit))
-#define CLR(bit) (A(bit) &= (~B(bit)))
-#define TST(bit) (A(bit) & B(bit))
-
-/* various options */
-int options;
-#define F_FLOOD 0x001
-#define F_INTERVAL 0x002
-#define F_NUMERIC 0x004
-#define F_PINGFILLED 0x008
-#define F_QUIET 0x010
-#define F_RROUTE 0x020
-#define F_SO_DEBUG 0x040
-#define F_SO_DONTROUTE 0x080
-#define F_VERBOSE 0x100
-
-/* multicast options */
-int moptions;
-#define MULTICAST_NOLOOP 0x001
-#define MULTICAST_TTL 0x002
-#define MULTICAST_IF 0x004
-
-/*
- * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
- * number of received sequence numbers we can keep track of. Change 128
- * to 8192 for complete accuracy...
- */
-#define MAX_DUP_CHK (8 * 128)
-int mx_dup_ck = MAX_DUP_CHK;
-char rcvd_tbl[MAX_DUP_CHK / 8];
-
-struct sockaddr whereto; /* who to ping */
-int datalen = DEFDATALEN;
-int s; /* socket file descriptor */
-u_char outpack[MAXPACKET];
-char BSPACE = '\b'; /* characters written for flood */
-char DOT = '.';
-static char *hostname;
-static int ident; /* process id to identify our packets */
-
-/* counters */
-static long npackets; /* max packets to transmit */
-static long nreceived; /* # of packets we got back */
-static long nrepeats; /* number of duplicates */
-static long ntransmitted; /* sequence # for outbound packets = #sent */
-static int interval = 1; /* interval between packets */
-
-/* timing */
-static int timing; /* flag to do timing */
-static long tmin = LONG_MAX; /* minimum round trip time */
-static long tmax = 0; /* maximum round trip time */
-static u_long tsum; /* sum of all times, for doing average */
-
-/* protos */
-static char *pr_addr(u_long);
-static int in_cksum(u_short *addr, int len);
-static void catcher(int);
-static void finish(int ignore);
-static void pinger(void);
-static void fill(void *bp, char *patp);
-static void usage(void);
-static void pr_pack(char *buf, int cc, struct sockaddr_in *from);
-static void tvsub(struct timeval *out, struct timeval *in);
-static void pr_icmph(struct icmp *icp);
-static void pr_retip(struct ip *ip);
-
-/* Only wrapper to call pinger (). */
-void *
-pinger_wrapper (void *ignored)
-{
- for (;;)
- {
- pinger ();
- sleep (interval);
- }
- return 0;
-}
-
-int
-main(int argc, char *argv[])
-{
- struct timeval timeout;
- struct hostent *hp;
- struct sockaddr_in *to;
- struct protoent *proto;
- struct in_addr ifaddr;
- int i;
- int ch, fdmask, hold, packlen, preload;
- u_char *datap, *packet;
- char *target;
- u_char ttl, loop;
- int am_i_root;
-#ifdef IP_OPTIONS
- char rspace[3 + 4 * NROUTES + 1]; /* record route space */
-#endif
-
- static char *null = NULL;
- __environ = &null;
- am_i_root = (getuid()==0);
-
- cthread_init ();
-
- /*
- * Pull this stuff up front so we can drop root if desired.
- */
- if (!(proto = getprotobyname("icmp"))) {
- (void)fprintf(stderr, "ping: unknown protocol icmp.\n");
- exit(2);
- }
- if ((s = socket(AF_INET, SOCK_RAW, proto->p_proto)) < 0) {
- if (errno==EPERM) {
- fprintf(stderr, "ping: ping must run as root\n");
- }
- else perror("ping: socket");
- exit(2);
- }
-
-#ifdef SAFE_TO_DROP_ROOT
- setuid(getuid());
-#endif
-
- preload = 0;
- datap = &outpack[8 + sizeof(struct timeval)];
- while ((ch = getopt(argc, argv, "I:LRc:dfh:i:l:np:qrs:t:v")) != EOF)
- switch(ch) {
- case 'c':
- npackets = atoi(optarg);
- if (npackets <= 0) {
- (void)fprintf(stderr,
- "ping: bad number of packets to transmit.\n");
- exit(2);
- }
- break;
- case 'd':
- options |= F_SO_DEBUG;
- break;
- case 'f':
- if (!am_i_root) {
- (void)fprintf(stderr,
- "ping: %s\n", strerror(EPERM));
- exit(2);
- }
- options |= F_FLOOD;
- setbuf(stdout, NULL);
- break;
- case 'i': /* wait between sending packets */
- interval = atoi(optarg);
- if (interval <= 0) {
- (void)fprintf(stderr,
- "ping: bad timing interval.\n");
- exit(2);
- }
- options |= F_INTERVAL;
- break;
- case 'l':
- if (!am_i_root) {
- (void)fprintf(stderr,
- "ping: %s\n", strerror(EPERM));
- exit(2);
- }
- preload = atoi(optarg);
- if (preload < 0) {
- (void)fprintf(stderr,
- "ping: bad preload value.\n");
- exit(2);
- }
- break;
- case 'n':
- options |= F_NUMERIC;
- break;
- case 'p': /* fill buffer with user pattern */
- options |= F_PINGFILLED;
- fill(datap, optarg);
- break;
- case 'q':
- options |= F_QUIET;
- break;
- case 'R':
- options |= F_RROUTE;
- break;
- case 'r':
- options |= F_SO_DONTROUTE;
- break;
- case 's': /* size of packet to send */
- datalen = atoi(optarg);
- if (datalen > MAXPACKET) {
- (void)fprintf(stderr,
- "ping: packet size too large.\n");
- exit(2);
- }
- if (datalen <= 0) {
- (void)fprintf(stderr,
- "ping: illegal packet size.\n");
- exit(2);
- }
- break;
- case 'v':
- options |= F_VERBOSE;
- break;
- case 'L':
- moptions |= MULTICAST_NOLOOP;
- loop = 0;
- break;
- case 't':
- moptions |= MULTICAST_TTL;
- i = atoi(optarg);
- if (i < 0 || i > 255) {
- printf("ttl %u out of range\n", i);
- exit(2);
- }
- ttl = i;
- break;
- case 'I':
- moptions |= MULTICAST_IF;
- {
- int i1, i2, i3, i4;
- char junk;
-
- if (sscanf(optarg, "%u.%u.%u.%u%c",
- &i1, &i2, &i3, &i4, &junk) != 4) {
- printf("bad interface address '%s'\n",
- optarg);
- exit(2);
- }
- ifaddr.s_addr = (i1<<24)|(i2<<16)|(i3<<8)|i4;
- ifaddr.s_addr = htonl(ifaddr.s_addr);
- }
- break;
- default:
- usage();
- }
- argc -= optind;
- argv += optind;
-
- if (argc != 1)
- usage();
- target = *argv;
-
- memset(&whereto, 0, sizeof(struct sockaddr));
- to = (struct sockaddr_in *)&whereto;
- to->sin_family = AF_INET;
- if (inet_aton(target, &to->sin_addr)) {
- hostname = target;
- }
- else {
- hp = gethostbyname(target);
- if (!hp) {
- (void)fprintf(stderr,
- "ping: unknown host %s\n", target);
- exit(2);
- }
- to->sin_family = hp->h_addrtype;
- if (hp->h_length > (int)sizeof(to->sin_addr)) {
- hp->h_length = sizeof(to->sin_addr);
- }
- memcpy(&to->sin_addr, hp->h_addr, hp->h_length);
- hostname = malloc (strlen (hp->h_name) + 1);
- strcpy (hostname, hp->h_name);
- }
-
- if (options & F_FLOOD && options & F_INTERVAL) {
- (void)fprintf(stderr,
- "ping: -f and -i incompatible options.\n");
- exit(2);
- }
-
- if (datalen >= (int)sizeof(struct timeval)) /* can we time transfer */
- timing = 1;
- packlen = datalen + MAXIPLEN + MAXICMPLEN;
- packet = malloc((u_int)packlen);
- if (!packet) {
- (void)fprintf(stderr, "ping: out of memory.\n");
- exit(2);
- }
- if (!(options & F_PINGFILLED))
- for (i = 8; i < datalen; ++i)
- *datap++ = i;
-
- ident = getpid() & 0xFFFF;
- hold = 1;
-
- if (options & F_SO_DEBUG)
- (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
- sizeof(hold));
-
- if (options & F_SO_DONTROUTE)
- (void)setsockopt(s, SOL_SOCKET, SO_DONTROUTE, (char *)&hold,
- sizeof(hold));
-
- /* this is necessary for broadcast pings to work */
- setsockopt(s, SOL_SOCKET, SO_BROADCAST, (char *)&hold, sizeof(hold));
-
- /* record route option */
- if (options & F_RROUTE) {
-#ifdef IP_OPTIONS
- memset(rspace, 0, sizeof(rspace));
- rspace[IPOPT_OPTVAL] = IPOPT_RR;
- rspace[IPOPT_OLEN] = sizeof(rspace)-1;
- rspace[IPOPT_OFFSET] = IPOPT_MINOFF;
- if (setsockopt(s, IPPROTO_IP, IP_OPTIONS, rspace,
- sizeof(rspace)) < 0) {
- perror("ping: record route");
- exit(2);
- }
-#else
- (void)fprintf(stderr,
- "ping: record route not available in this implementation.\n");
- exit(2);
-#endif /* IP_OPTIONS */
- }
-
- /*
- * When pinging the broadcast address, you can get a lot of answers.
- * Doing something so evil is useful if you are trying to stress the
- * ethernet, or just want to fill the arp cache to get some stuff for
- * /etc/ethers.
- */
- hold = 48 * 1024;
- (void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
- sizeof(hold));
-
-/*#if 0*/
- if (moptions & MULTICAST_NOLOOP) {
- if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP,
- &loop, 1) == -1) {
- perror ("can't disable multicast loopback");
- exit(92);
- }
- }
- if (moptions & MULTICAST_TTL) {
- if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL,
- &ttl, 1) == -1) {
- perror ("can't set multicast time-to-live");
- exit(93);
- }
- }
- if (moptions & MULTICAST_IF) {
- if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF,
- &ifaddr, sizeof(ifaddr)) == -1) {
- perror ("can't set multicast source interface");
- exit(94);
- }
- }
-/*#endif*/
-
- if (to->sin_family == AF_INET)
- (void)printf("PING %s (%s): %d data bytes\n", hostname,
- inet_ntoa(*(struct in_addr *)&to->sin_addr.s_addr),
- datalen);
- else
- (void)printf("PING %s: %d data bytes\n", hostname, datalen);
-
- (void)signal(SIGINT, finish);
-
- /* I replace this with thread -- Kunihiro
- (void)signal(SIGALRM, catcher);
- */
-
-
- while (preload--) /* fire off them quickies */
- pinger();
-
- if ((options & F_FLOOD) == 0)
- cthread_detach (cthread_fork (pinger_wrapper, NULL));
-
-
- for (;;) {
- struct sockaddr_in from;
- register int cc;
- socklen_t fromlen;
-
- if (options & F_FLOOD) {
- pinger();
- timeout.tv_sec = 0;
- timeout.tv_usec = 10000;
- fdmask = 1 << s;
- if (select(s + 1, (fd_set *)&fdmask, (fd_set *)NULL,
- (fd_set *)NULL, &timeout) < 1)
- continue;
- }
- fromlen = sizeof(from);
- if ((cc = recvfrom(s, (char *)packet, packlen, 0,
- (struct sockaddr *)&from, &fromlen)) < 0) {
- if (errno == EINTR)
- continue;
- perror("ping: recvfrom");
- continue;
- }
- pr_pack((char *)packet, cc, &from);
- if (npackets && nreceived >= npackets)
- break;
- }
- finish(0);
- /* NOTREACHED */
- return 0;
-}
-
-/*
- * catcher --
- * This routine causes another PING to be transmitted, and then
- * schedules another SIGALRM for 1 second from now.
- *
- * bug --
- * Our sense of time will slowly skew (i.e., packets will not be
- * launched exactly at 1-second intervals). This does not affect the
- * quality of the delay and loss statistics.
- */
-static void
-catcher(int ignore)
-{
- int waittime;
-
- (void)ignore;
- pinger();
- (void)signal(SIGALRM, catcher);
- if (!npackets || ntransmitted < npackets)
- alarm((u_int)interval);
- else {
- if (nreceived) {
- waittime = 2 * tmax / 1000;
- if (!waittime)
- waittime = 1;
- if (waittime > MAXWAIT)
- waittime = MAXWAIT;
- } else
- waittime = MAXWAIT;
- (void)signal(SIGALRM, finish);
- (void)alarm((u_int)waittime);
- }
-}
-
-/*
- * pinger --
- * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
- * will be added on by the kernel. The ID field is our UNIX process ID,
- * and the sequence number is an ascending integer. The first 8 bytes
- * of the data portion are used to hold a UNIX "timeval" struct in VAX
- * byte-order, to compute the round-trip time.
- */
-static void
-pinger(void)
-{
- register struct icmp *icp;
- register int cc;
- int i;
-
- icp = (struct icmp *)outpack;
- icp->icmp_type = ICMP_ECHO;
- icp->icmp_code = 0;
- icp->icmp_cksum = 0;
- icp->icmp_seq = ntransmitted++;
- icp->icmp_id = ident; /* ID */
-
- CLR(icp->icmp_seq % mx_dup_ck);
-
- if (timing)
- (void)gettimeofday((struct timeval *)&outpack[8],
- (struct timezone *)NULL);
-
- cc = datalen + 8; /* skips ICMP portion */
-
- /* compute ICMP checksum here */
- icp->icmp_cksum = in_cksum((u_short *)icp, cc);
-
- i = sendto(s, (char *)outpack, cc, 0, &whereto,
- sizeof(struct sockaddr));
-
- if (i < 0 || i != cc) {
- if (i < 0)
- perror("ping: sendto");
- (void)printf("ping: wrote %s %d chars, ret=%d\n",
- hostname, cc, i);
- }
- if (!(options & F_QUIET) && options & F_FLOOD)
- (void)write(STDOUT_FILENO, &DOT, 1);
-}
-
-/*
- * pr_pack --
- * Print out the packet, if it came from us. This logic is necessary
- * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
- * which arrive ('tis only fair). This permits multiple copies of this
- * program to be run without having intermingled output (or statistics!).
- */
-void
-pr_pack(char *buf, int cc, struct sockaddr_in *from)
-{
- register struct icmp *icp;
- register int i;
- register u_char *cp,*dp;
-/*#if 0*/
- register u_long l;
- register int j;
- static int old_rrlen;
- static char old_rr[MAX_IPOPTLEN];
-/*#endif*/
- struct ip *ip;
- struct timeval tv, *tp;
- long triptime = 0;
- int hlen, dupflag;
-
- (void)gettimeofday(&tv, (struct timezone *)NULL);
-
- /* Check the IP header */
- ip = (struct ip *)buf;
- hlen = ip->ip_hl << 2;
- if (cc < datalen + ICMP_MINLEN) {
- if (options & F_VERBOSE)
- (void)fprintf(stderr,
- "ping: packet too short (%d bytes) from %s\n", cc,
- inet_ntoa(*(struct in_addr *)&from->sin_addr.s_addr));
- return;
- }
-
- /* Now the ICMP part */
- cc -= hlen;
- icp = (struct icmp *)(buf + hlen);
- if (icp->icmp_type == ICMP_ECHOREPLY) {
- if (icp->icmp_id != ident)
- return; /* 'Twas not our ECHO */
- ++nreceived;
- if (timing) {
-#ifndef icmp_data
- tp = (struct timeval *)(icp + 1);
-#else
- tp = (struct timeval *)icp->icmp_data;
-#endif
- tvsub(&tv, tp);
- triptime = tv.tv_sec * 10000 + (tv.tv_usec / 100);
- tsum += triptime;
- if (triptime < tmin)
- tmin = triptime;
- if (triptime > tmax)
- tmax = triptime;
- }
-
- if (TST(icp->icmp_seq % mx_dup_ck)) {
- ++nrepeats;
- --nreceived;
- dupflag = 1;
- } else {
- SET(icp->icmp_seq % mx_dup_ck);
- dupflag = 0;
- }
-
- if (options & F_QUIET)
- return;
-
- if (options & F_FLOOD)
- (void)write(STDOUT_FILENO, &BSPACE, 1);
- else {
- (void)printf("%d bytes from %s: icmp_seq=%u", cc,
- inet_ntoa(*(struct in_addr *)&from->sin_addr.s_addr),
- icp->icmp_seq);
- (void)printf(" ttl=%d", ip->ip_ttl);
- if (timing)
- (void)printf(" time=%ld.%ld ms", triptime/10,
- triptime%10);
- if (dupflag)
- (void)printf(" (DUP!)");
- /* check the data */
-#ifndef icmp_data
- cp = ((u_char*)(icp + 1) + 8);
-#else
- cp = (u_char*)icp->icmp_data + 8;
-#endif
- dp = &outpack[8 + sizeof(struct timeval)];
- for (i = 8; i < datalen; ++i, ++cp, ++dp) {
- if (*cp != *dp) {
- (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x",
- i, *dp, *cp);
- cp = (u_char*)(icp + 1);
- for (i = 8; i < datalen; ++i, ++cp) {
- if ((i % 32) == 8)
- (void)printf("\n\t");
- (void)printf("%x ", *cp);
- }
- break;
- }
- }
- }
- } else {
- /* We've got something other than an ECHOREPLY */
- if (!(options & F_VERBOSE))
- return;
- (void)printf("%d bytes from %s: ", cc,
- pr_addr(from->sin_addr.s_addr));
- pr_icmph(icp);
- }
-
-/*#if 0*/
- /* Display any IP options */
- cp = (u_char *)buf + sizeof(struct ip);
-
- for (; hlen > (int)sizeof(struct ip); --hlen, ++cp)
- switch (*cp) {
- case IPOPT_EOL:
- hlen = 0;
- break;
- case IPOPT_LSRR:
- (void)printf("\nLSRR: ");
- hlen -= 2;
- j = *++cp;
- ++cp;
- if (j > IPOPT_MINOFF)
- for (;;) {
- l = *++cp;
- l = (l<<8) + *++cp;
- l = (l<<8) + *++cp;
- l = (l<<8) + *++cp;
- if (l == 0)
- (void)printf("\t0.0.0.0");
- else
- (void)printf("\t%s", pr_addr(ntohl(l)));
- hlen -= 4;
- j -= 4;
- if (j <= IPOPT_MINOFF)
- break;
- (void)putchar('\n');
- }
- break;
- case IPOPT_RR:
- j = *++cp; /* get length */
- i = *++cp; /* and pointer */
- hlen -= 2;
- if (i > j)
- i = j;
- i -= IPOPT_MINOFF;
- if (i <= 0)
- continue;
- if (i == old_rrlen
- && cp == (u_char *)buf + sizeof(struct ip) + 2
- && !memcmp((char *)cp, old_rr, i)
- && !(options & F_FLOOD)) {
- (void)printf("\t(same route)");
- i = ((i + 3) / 4) * 4;
- hlen -= i;
- cp += i;
- break;
- }
- old_rrlen = i;
- memcpy(old_rr, cp, i);
- (void)printf("\nRR: ");
- for (;;) {
- l = *++cp;
- l = (l<<8) + *++cp;
- l = (l<<8) + *++cp;
- l = (l<<8) + *++cp;
- if (l == 0)
- (void)printf("\t0.0.0.0");
- else
- (void)printf("\t%s", pr_addr(ntohl(l)));
- hlen -= 4;
- i -= 4;
- if (i <= 0)
- break;
- (void)putchar('\n');
- }
- break;
- case IPOPT_NOP:
- (void)printf("\nNOP");
- break;
- default:
- (void)printf("\nunknown option %x", *cp);
- break;
- }
-/*#endif*/
- if (!(options & F_FLOOD)) {
- (void)putchar('\n');
- (void)fflush(stdout);
- }
-}
-
-/*
- * in_cksum --
- * Checksum routine for Internet Protocol family headers (C Version)
- */
-static int
-in_cksum(u_short *addr, int len)
-{
- register int nleft = len;
- register u_short *w = addr;
- register int sum = 0;
- u_short answer = 0;
-
- /*
- * Our algorithm is simple, using a 32 bit accumulator (sum), we add
- * sequential 16 bit words to it, and at the end, fold back all the
- * carry bits from the top 16 bits into the lower 16 bits.
- */
- while (nleft > 1) {
- sum += *w++;
- nleft -= 2;
- }
-
- /* mop up an odd byte, if necessary */
- if (nleft == 1) {
- *(u_char *)(&answer) = *(u_char *)w ;
- sum += answer;
- }
-
- /* add back carry outs from top 16 bits to low 16 bits */
- sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */
- sum += (sum >> 16); /* add carry */
- answer = ~sum; /* truncate to 16 bits */
- return(answer);
-}
-
-/*
- * tvsub --
- * Subtract 2 timeval structs: out = out - in. Out is assumed to
- * be >= in.
- */
-static void
-tvsub(register struct timeval *out, register struct timeval *in)
-{
- if ((out->tv_usec -= in->tv_usec) < 0) {
- --out->tv_sec;
- out->tv_usec += 1000000;
- }
- out->tv_sec -= in->tv_sec;
-}
-
-/*
- * finish --
- * Print out statistics, and give up.
- */
-static void
-finish(int ignore)
-{
- (void)ignore;
-
- (void)signal(SIGINT, SIG_IGN);
- (void)putchar('\n');
- (void)fflush(stdout);
- (void)printf("--- %s ping statistics ---\n", hostname);
- (void)printf("%ld packets transmitted, ", ntransmitted);
- (void)printf("%ld packets received, ", nreceived);
- if (nrepeats)
- (void)printf("+%ld duplicates, ", nrepeats);
- if (ntransmitted)
- if (nreceived > ntransmitted)
- (void)printf("-- somebody's printing up packets!");
- else
- (void)printf("%d%% packet loss",
- (int) (((ntransmitted - nreceived) * 100) /
- ntransmitted));
- (void)putchar('\n');
- if (nreceived && timing)
- (void)printf("round-trip min/avg/max = %ld.%ld/%lu.%ld/%ld.%ld ms\n",
- tmin/10, tmin%10,
- (tsum / (nreceived + nrepeats))/10,
- (tsum / (nreceived + nrepeats))%10,
- tmax/10, tmax%10);
-
- if (nreceived==0) exit(1);
- exit(0);
-}
-
-#ifdef notdef
-static char *ttab[] = {
- "Echo Reply", /* ip + seq + udata */
- "Dest Unreachable", /* net, host, proto, port, frag, sr + IP */
- "Source Quench", /* IP */
- "Redirect", /* redirect type, gateway, + IP */
- "Echo",
- "Time Exceeded", /* transit, frag reassem + IP */
- "Parameter Problem", /* pointer + IP */
- "Timestamp", /* id + seq + three timestamps */
- "Timestamp Reply", /* " */
- "Info Request", /* id + sq */
- "Info Reply" /* " */
-};
-#endif
-
-/*
- * pr_icmph --
- * Print a descriptive string about an ICMP header.
- */
-static void
-pr_icmph(struct icmp *icp)
-{
- switch(icp->icmp_type) {
- case ICMP_ECHOREPLY:
- (void)printf("Echo Reply\n");
- /* XXX ID + Seq + Data */
- break;
- case ICMP_DEST_UNREACH:
- switch(icp->icmp_code) {
- case ICMP_NET_UNREACH:
- (void)printf("Destination Net Unreachable\n");
- break;
- case ICMP_HOST_UNREACH:
- (void)printf("Destination Host Unreachable\n");
- break;
- case ICMP_PROT_UNREACH:
- (void)printf("Destination Protocol Unreachable\n");
- break;
- case ICMP_PORT_UNREACH:
- (void)printf("Destination Port Unreachable\n");
- break;
- case ICMP_FRAG_NEEDED:
- (void)printf("frag needed and DF set\n");
- break;
- case ICMP_SR_FAILED:
- (void)printf("Source Route Failed\n");
- break;
- case ICMP_NET_UNKNOWN:
- (void)printf("Network Unknown\n");
- break;
- case ICMP_HOST_UNKNOWN:
- (void)printf("Host Unknown\n");
- break;
- case ICMP_HOST_ISOLATED:
- (void)printf("Host Isolated\n");
- break;
- case ICMP_NET_UNR_TOS:
- printf("Destination Network Unreachable At This TOS\n");
- break;
- case ICMP_HOST_UNR_TOS:
- printf("Destination Host Unreachable At This TOS\n");
- break;
-#ifdef ICMP_PKT_FILTERED
- case ICMP_PKT_FILTERED:
- (void)printf("Packet Filtered\n");
- break;
-#endif
-#ifdef ICMP_PREC_VIOLATION
- case ICMP_PREC_VIOLATION:
- (void)printf("Precedence Violation\n");
- break;
-#endif
-#ifdef ICMP_PREC_CUTOFF
- case ICMP_PREC_CUTOFF:
- (void)printf("Precedence Cutoff\n");
- break;
-#endif
- default:
- (void)printf("Dest Unreachable, Unknown Code: %d\n",
- icp->icmp_code);
- break;
- }
- /* Print returned IP header information */
-#ifndef icmp_data
- pr_retip((struct ip *)(icp + 1));
-#else
- pr_retip((struct ip *)icp->icmp_data);
-#endif
- break;
- case ICMP_SOURCE_QUENCH:
- (void)printf("Source Quench\n");
-#ifndef icmp_data
- pr_retip((struct ip *)(icp + 1));
-#else
- pr_retip((struct ip *)icp->icmp_data);
-#endif
- break;
- case ICMP_REDIRECT:
- switch(icp->icmp_code) {
- case ICMP_REDIR_NET:
- (void)printf("Redirect Network");
- break;
- case ICMP_REDIR_HOST:
- (void)printf("Redirect Host");
- break;
- case ICMP_REDIR_NETTOS:
- (void)printf("Redirect Type of Service and Network");
- break;
- case ICMP_REDIR_HOSTTOS:
- (void)printf("Redirect Type of Service and Host");
- break;
- default:
- (void)printf("Redirect, Bad Code: %d", icp->icmp_code);
- break;
- }
- (void)printf("(New addr: %s)\n",
- inet_ntoa(icp->icmp_gwaddr));
-#ifndef icmp_data
- pr_retip((struct ip *)(icp + 1));
-#else
- pr_retip((struct ip *)icp->icmp_data);
-#endif
- break;
- case ICMP_ECHO:
- (void)printf("Echo Request\n");
- /* XXX ID + Seq + Data */
- break;
- case ICMP_TIME_EXCEEDED:
- switch(icp->icmp_code) {
- case ICMP_EXC_TTL:
- (void)printf("Time to live exceeded\n");
- break;
- case ICMP_EXC_FRAGTIME:
- (void)printf("Frag reassembly time exceeded\n");
- break;
- default:
- (void)printf("Time exceeded, Bad Code: %d\n",
- icp->icmp_code);
- break;
- }
-#ifndef icmp_data
- pr_retip((struct ip *)(icp + 1));
-#else
- pr_retip((struct ip *)icp->icmp_data);
-#endif
- break;
- case ICMP_PARAMETERPROB:
- (void)printf("Parameter problem: IP address = %s\n",
- inet_ntoa (icp->icmp_gwaddr));
-#ifndef icmp_data
- pr_retip((struct ip *)(icp + 1));
-#else
- pr_retip((struct ip *)icp->icmp_data);
-#endif
- break;
- case ICMP_TIMESTAMP:
- (void)printf("Timestamp\n");
- /* XXX ID + Seq + 3 timestamps */
- break;
- case ICMP_TIMESTAMPREPLY:
- (void)printf("Timestamp Reply\n");
- /* XXX ID + Seq + 3 timestamps */
- break;
- case ICMP_INFO_REQUEST:
- (void)printf("Information Request\n");
- /* XXX ID + Seq */
- break;
- case ICMP_INFO_REPLY:
- (void)printf("Information Reply\n");
- /* XXX ID + Seq */
- break;
-#ifdef ICMP_MASKREQ
- case ICMP_MASKREQ:
- (void)printf("Address Mask Request\n");
- break;
-#endif
-#ifdef ICMP_MASKREPLY
- case ICMP_MASKREPLY:
- (void)printf("Address Mask Reply\n");
- break;
-#endif
- default:
- (void)printf("Bad ICMP type: %d\n", icp->icmp_type);
- }
-}
-
-/*
- * pr_iph --
- * Print an IP header with options.
- */
-static void
-pr_iph(struct ip *ip)
-{
- int hlen;
- u_char *cp;
-
- hlen = ip->ip_hl << 2;
- cp = (u_char *)ip + 20; /* point to options */
-
- (void)printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst Data\n");
- (void)printf(" %1x %1x %02x %04x %04x",
- ip->ip_v, ip->ip_hl, ip->ip_tos, ip->ip_len, ip->ip_id);
- (void)printf(" %1x %04x", ((ip->ip_off) & 0xe000) >> 13,
- (ip->ip_off) & 0x1fff);
- (void)printf(" %02x %02x %04x", ip->ip_ttl, ip->ip_p, ip->ip_sum);
- (void)printf(" %s ", inet_ntoa(*((struct in_addr *) &ip->ip_src)));
- (void)printf(" %s ", inet_ntoa(*((struct in_addr *) &ip->ip_dst)));
- /* dump and option bytes */
- while (hlen-- > 20) {
- (void)printf("%02x", *cp++);
- }
- (void)putchar('\n');
-}
-
-/*
- * pr_addr --
- * Return an ascii host address as a dotted quad and optionally with
- * a hostname.
- */
-static char *
-pr_addr(u_long l)
-{
- struct hostent *hp;
- static char buf[256];
-
- if ((options & F_NUMERIC) ||
- !(hp = gethostbyaddr((char *)&l, 4, AF_INET)))
- (void)snprintf(buf, sizeof(buf), "%s",
- inet_ntoa(*(struct in_addr *)&l));
- else
- (void)snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name,
- inet_ntoa(*(struct in_addr *)&l));
- return(buf);
-}
-
-/*
- * pr_retip --
- * Dump some info on a returned (via ICMP) IP packet.
- */
-static void
-pr_retip(struct ip *ip)
-{
- int hlen;
- u_char *cp;
-
- pr_iph(ip);
- hlen = ip->ip_hl << 2;
- cp = (u_char *)ip + hlen;
-
- if (ip->ip_p == 6)
- (void)printf("TCP: from port %u, to port %u (decimal)\n",
- (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3)));
- else if (ip->ip_p == 17)
- (void)printf("UDP: from port %u, to port %u (decimal)\n",
- (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3)));
-}
-
-static void
-fill(void *bp1, char *patp)
-{
- register int ii, jj, kk;
- int pat[16];
- char *cp, *bp = (char *)bp1;
-
- for (cp = patp; *cp; cp++)
- if (!isxdigit(*cp)) {
- (void)fprintf(stderr,
- "ping: patterns must be specified as hex digits.\n");
- exit(2);
- }
- ii = sscanf(patp,
- "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
- &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
- &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
- &pat[13], &pat[14], &pat[15]);
-
- if (ii > 0)
- for (kk = 0; kk <= MAXPACKET - (8 + ii); kk += ii)
- for (jj = 0; jj < ii; ++jj)
- bp[jj + kk] = pat[jj];
- if (!(options & F_QUIET)) {
- (void)printf("PATTERN: 0x");
- for (jj = 0; jj < ii; ++jj)
- (void)printf("%02x", bp[jj] & 0xFF);
- (void)printf("\n");
- }
-}
-
-static void
-usage(void)
-{
- (void)fprintf(stderr,
- "usage: ping [-LRdfnqrv] [-c count] [-i wait] [-l preload]\n\t[-p pattern] [-s packetsize] [-t ttl] [-I interface address] host\n");
- exit(2);
-}