-/*-
- * Copyright (c) 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Van Jacobson.
- *
- * 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.
- */
-
-#ifndef lint
-static char copyright[] =
-"@(#) Copyright (c) 1990, 1993\n\
- The Regents of the University of California. All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-static char sccsid[] = "@(#)traceroute.c 8.1 (Berkeley) 6/6/93";
-#endif /* not lint */
-
-/*
- * traceroute host - trace the route ip packets follow going to "host".
- *
- * Attempt to trace the route an ip packet would follow to some
- * internet host. We find out intermediate hops by launching probe
- * packets with a small ttl (time to live) then listening for an
- * icmp "time exceeded" reply from a gateway. We start our probes
- * with a ttl of one and increase by one until we get an icmp "port
- * unreachable" (which means we got to "host") or hit a max (which
- * defaults to 30 hops & can be changed with the -m flag). Three
- * probes (change with -q flag) are sent at each ttl setting and a
- * line is printed showing the ttl, address of the gateway and
- * round trip time of each probe. If the probe answers come from
- * different gateways, the address of each responding system will
- * be printed. If there is no response within a 5 sec. timeout
- * interval (changed with the -w flag), a "*" is printed for that
- * probe.
- *
- * Probe packets are UDP format. We don't want the destination
- * host to process them so the destination port is set to an
- * unlikely value (if some clod on the destination is using that
- * value, it can be changed with the -p flag).
- *
- * A sample use might be:
- *
- * [yak 71]% traceroute nis.nsf.net.
- * traceroute to nis.nsf.net (35.1.1.48), 30 hops max, 56 byte packet
- * 1 helios.ee.lbl.gov (128.3.112.1) 19 ms 19 ms 0 ms
- * 2 lilac-dmc.Berkeley.EDU (128.32.216.1) 39 ms 39 ms 19 ms
- * 3 lilac-dmc.Berkeley.EDU (128.32.216.1) 39 ms 39 ms 19 ms
- * 4 ccngw-ner-cc.Berkeley.EDU (128.32.136.23) 39 ms 40 ms 39 ms
- * 5 ccn-nerif22.Berkeley.EDU (128.32.168.22) 39 ms 39 ms 39 ms
- * 6 128.32.197.4 (128.32.197.4) 40 ms 59 ms 59 ms
- * 7 131.119.2.5 (131.119.2.5) 59 ms 59 ms 59 ms
- * 8 129.140.70.13 (129.140.70.13) 99 ms 99 ms 80 ms
- * 9 129.140.71.6 (129.140.71.6) 139 ms 239 ms 319 ms
- * 10 129.140.81.7 (129.140.81.7) 220 ms 199 ms 199 ms
- * 11 nic.merit.edu (35.1.1.48) 239 ms 239 ms 239 ms
- *
- * Note that lines 2 & 3 are the same. This is due to a buggy
- * kernel on the 2nd hop system -- lbl-csam.arpa -- that forwards
- * packets with a zero ttl.
- *
- * A more interesting example is:
- *
- * [yak 72]% traceroute allspice.lcs.mit.edu.
- * traceroute to allspice.lcs.mit.edu (18.26.0.115), 30 hops max
- * 1 helios.ee.lbl.gov (128.3.112.1) 0 ms 0 ms 0 ms
- * 2 lilac-dmc.Berkeley.EDU (128.32.216.1) 19 ms 19 ms 19 ms
- * 3 lilac-dmc.Berkeley.EDU (128.32.216.1) 39 ms 19 ms 19 ms
- * 4 ccngw-ner-cc.Berkeley.EDU (128.32.136.23) 19 ms 39 ms 39 ms
- * 5 ccn-nerif22.Berkeley.EDU (128.32.168.22) 20 ms 39 ms 39 ms
- * 6 128.32.197.4 (128.32.197.4) 59 ms 119 ms 39 ms
- * 7 131.119.2.5 (131.119.2.5) 59 ms 59 ms 39 ms
- * 8 129.140.70.13 (129.140.70.13) 80 ms 79 ms 99 ms
- * 9 129.140.71.6 (129.140.71.6) 139 ms 139 ms 159 ms
- * 10 129.140.81.7 (129.140.81.7) 199 ms 180 ms 300 ms
- * 11 129.140.72.17 (129.140.72.17) 300 ms 239 ms 239 ms
- * 12 * * *
- * 13 128.121.54.72 (128.121.54.72) 259 ms 499 ms 279 ms
- * 14 * * *
- * 15 * * *
- * 16 * * *
- * 17 * * *
- * 18 ALLSPICE.LCS.MIT.EDU (18.26.0.115) 339 ms 279 ms 279 ms
- *
- * (I start to see why I'm having so much trouble with mail to
- * MIT.) Note that the gateways 12, 14, 15, 16 & 17 hops away
- * either don't send ICMP "time exceeded" messages or send them
- * with a ttl too small to reach us. 14 - 17 are running the
- * MIT C Gateway code that doesn't send "time exceeded"s. God
- * only knows what's going on with 12.
- *
- * The silent gateway 12 in the above may be the result of a bug in
- * the 4.[23]BSD network code (and its derivatives): 4.x (x <= 3)
- * sends an unreachable message using whatever ttl remains in the
- * original datagram. Since, for gateways, the remaining ttl is
- * zero, the icmp "time exceeded" is guaranteed to not make it back
- * to us. The behavior of this bug is slightly more interesting
- * when it appears on the destination system:
- *
- * 1 helios.ee.lbl.gov (128.3.112.1) 0 ms 0 ms 0 ms
- * 2 lilac-dmc.Berkeley.EDU (128.32.216.1) 39 ms 19 ms 39 ms
- * 3 lilac-dmc.Berkeley.EDU (128.32.216.1) 19 ms 39 ms 19 ms
- * 4 ccngw-ner-cc.Berkeley.EDU (128.32.136.23) 39 ms 40 ms 19 ms
- * 5 ccn-nerif35.Berkeley.EDU (128.32.168.35) 39 ms 39 ms 39 ms
- * 6 csgw.Berkeley.EDU (128.32.133.254) 39 ms 59 ms 39 ms
- * 7 * * *
- * 8 * * *
- * 9 * * *
- * 10 * * *
- * 11 * * *
- * 12 * * *
- * 13 rip.Berkeley.EDU (128.32.131.22) 59 ms ! 39 ms ! 39 ms !
- *
- * Notice that there are 12 "gateways" (13 is the final
- * destination) and exactly the last half of them are "missing".
- * What's really happening is that rip (a Sun-3 running Sun OS3.5)
- * is using the ttl from our arriving datagram as the ttl in its
- * icmp reply. So, the reply will time out on the return path
- * (with no notice sent to anyone since icmp's aren't sent for
- * icmp's) until we probe with a ttl that's at least twice the path
- * length. I.e., rip is really only 7 hops away. A reply that
- * returns with a ttl of 1 is a clue this problem exists.
- * Traceroute prints a "!" after the time if the ttl is <= 1.
- * Since vendors ship a lot of obsolete (DEC's Ultrix, Sun 3.x) or
- * non-standard (HPUX) software, expect to see this problem
- * frequently and/or take care picking the target host of your
- * probes.
- *
- * Other possible annotations after the time are !H, !N, !P (got a host,
- * network or protocol unreachable, respectively), !S or !F (source
- * route failed or fragmentation needed -- neither of these should
- * ever occur and the associated gateway is busted if you see one). If
- * almost all the probes result in some kind of unreachable, traceroute
- * will give up and exit.
- *
- * Notes
- * -----
- * This program must be run by root or be setuid. (I suggest that
- * you *don't* make it setuid -- casual use could result in a lot
- * of unnecessary traffic on our poor, congested nets.)
- *
- * This program requires a kernel mod that does not appear in any
- * system available from Berkeley: A raw ip socket using proto
- * IPPROTO_RAW must interpret the data sent as an ip datagram (as
- * opposed to data to be wrapped in a ip datagram). See the README
- * file that came with the source to this program for a description
- * of the mods I made to /sys/netinet/raw_ip.c. Your mileage may
- * vary. But, again, ANY 4.x (x < 4) BSD KERNEL WILL HAVE TO BE
- * MODIFIED TO RUN THIS PROGRAM.
- *
- * The udp port usage may appear bizarre (well, ok, it is bizarre).
- * The problem is that an icmp message only contains 8 bytes of
- * data from the original datagram. 8 bytes is the size of a udp
- * header so, if we want to associate replies with the original
- * datagram, the necessary information must be encoded into the
- * udp header (the ip id could be used but there's no way to
- * interlock with the kernel's assignment of ip id's and, anyway,
- * it would have taken a lot more kernel hacking to allow this
- * code to set the ip id). So, to allow two or more users to
- * use traceroute simultaneously, we use this task's pid as the
- * source port (the high bit is set to move the port number out
- * of the "likely" range). To keep track of which probe is being
- * replied to (so times and/or hop counts don't get confused by a
- * reply that was delayed in transit), we increment the destination
- * port number before each probe.
- *
- * Don't use this as a coding example. I was trying to find a
- * routing problem and this code sort-of popped out after 48 hours
- * without sleep. I was amazed it ever compiled, much less ran.
- *
- * I stole the idea for this program from Steve Deering. Since
- * the first release, I've learned that had I attended the right
- * IETF working group meetings, I also could have stolen it from Guy
- * Almes or Matt Mathis. I don't know (or care) who came up with
- * the idea first. I envy the originators' perspicacity and I'm
- * glad they didn't keep the idea a secret.
- *
- * Tim Seaver, Ken Adelman and C. Philip Wood provided bug fixes and/or
- * enhancements to the original distribution.
- *
- * I've hacked up a round-trip-route version of this that works by
- * sending a loose-source-routed udp datagram through the destination
- * back to yourself. Unfortunately, SO many gateways botch source
- * routing, the thing is almost worthless. Maybe one day...
- *
- * -- Van Jacobson (van@helios.ee.lbl.gov)
- * Tue Dec 20 03:50:13 PST 1988
- */
-
-#define caddr_t void *
-
-#include <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <winsock2.h>
-
-
-#include <stdio.h>
-#include <time.h>
-#include <winsock.h>
-
-//void print(buf, cc, from);
-char * inetname(struct in_addr);
-double deltaT(struct timeval *, struct timeval *);
-void usage();
-void send_probe(int, int);
-
-#define bzero( ptr, count ) memset( ptr, 0, count )
-#define bcopy(src,dest,len) memcpy(dest,src,len)
-
-// setlinebuf is equivalent to the setvbuf call below.
-inline int setlinebuf(FILE *stream)
-{
- return setvbuf( stream, (char*)0, _IONBF, 0 );
-}
-
-#ifndef __GNUC__
-#define EPOCHFILETIME (116444736000000000i64)
-#else
-#define EPOCHFILETIME (116444736000000000LL)
-#endif
-
-struct timezone {
- int tz_minuteswest; /* minutes W of Greenwich */
- int tz_dsttime; /* type of dst correction */
-};
-
-int gettimeofday(struct timeval *tv, struct timezone *tz)
-{
- FILETIME ft;
- LARGE_INTEGER li;
- __int64 t;
- static int tzflag;
-
- if (tv)
- {
- GetSystemTimeAsFileTime(&ft);
- //li.LowPart = ft.dwLowDateTime;
- //li.HighPart = ft.dwHighDateTime;
- t = li.QuadPart; /* In 100-nanosecond intervals */
- t -= EPOCHFILETIME; /* Offset to the Epoch time */
- t /= 10; /* In microseconds */
- tv->tv_sec = (long)(t / 1000000);
- tv->tv_usec = (long)(t % 1000000);
- }
-
- if (tz)
- {
- if (!tzflag)
- {
- _tzset();
- tzflag++;
- }
- tz->tz_minuteswest = _timezone / 60;
- tz->tz_dsttime = _daylight;
- }
-
- return 0;
-}
-
-
-
-/* Set up endiannes macros for the ip and ip_icmp BSD headers */
-#ifndef BIG_ENDIAN
-#define BIG_ENDIAN 4321
-#endif
-#ifndef LITTLE_ENDIAN
-#define LITTLE_ENDIAN 1234
-#endif
-#ifndef BYTE_ORDER
-#ifdef WORDS_BIGENDIAN
-#define BYTE_ORDER BIG_ENDIAN
-#else
-#define BYTE_ORDER LITTLE_ENDIAN
-#endif
-#endif /* BYTE_ORDER */
-
-#define u_int16_t WORD
-#define u_int32_t DWORD
-
-/* These are BSD headers. We use these here because they are needed on
- * libc5 Linux systems. On other platforms they are usually simply more
- * complete than the native stuff, and cause less portability problems
- * so we use them anyway.
- */
-#include "ip.h"
-#include "ip_icmp.h"
-
-
-#define MAXPACKET 65535 /* max ip packet size */
-#ifndef MAXHOSTNAMELEN
-#define MAXHOSTNAMELEN 64
-#endif
-
-#ifndef FD_SET
-#define NFDBITS (8*sizeof(fd_set))
-#define FD_SETSIZE NFDBITS
-#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
-#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
-#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
-#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p)))
-#endif
-
-#define Fprintf (void)fprintf
-#define Sprintf (void)sprintf
-#define Printf (void)printf
-
-/*
- * Define the UDP header
- */
-typedef struct udphdr {
- u_short uh_dport;
- u_short uh_sport;
- u_short uh_sum;
- u_short uh_ulen;
-} udphdr;
-
-/*
- * format of a (udp) probe packet.
- */
-struct opacket {
- struct ip ip;
- udphdr udp;
- u_char seq; /* sequence number of this packet */
- u_char ttl; /* ttl packet left with */
- struct timeval tv; /* time packet left */
-};
-
-u_char packet[512]; /* last inbound (icmp) packet */
-struct opacket *outpacket; /* last output (udp) packet */
-
-#if 0
-int wait_for_reply __P((int, struct sockaddr_in *));
-void send_probe __P((int, int));
-double deltaT __P((struct timeval *, struct timeval *));
-int packet_ok __P((u_char *, int, struct sockaddr_in *, int));
-//void print __P((u_char *, int, struct sockaddr_in *));
-void tvsub __P((struct timeval *, struct timeval *));
-char *inetname __P((struct in_addr));
-void usage __P(());
-#endif
-
-int s; /* receive (icmp) socket file descriptor */
-int sndsock; /* send (udp) socket file descriptor */
-struct timezone tz; /* leftover */
-
-struct sockaddr whereto; /* Who to try to reach */
-int datalen; /* How much data */
-
-char *source = 0;
-char *hostname;
-
-int nprobes = 3;
-int max_ttl = 30;
-u_short ident;
-u_short port = 32768+666; /* start udp dest port # for probe packets */
-int options; /* socket options */
-int verbose;
-int waittime = 5; /* time to wait for response (in seconds) */
-int nflag; /* print addresses numerically */
-
-void
-print(buf, cc, from)
- u_char *buf;
- int cc;
- struct sockaddr_in *from;
-{
- struct ip *ip;
- int hlen;
-
- ip = (struct ip *) buf;
- hlen = ip->ip_hl << 2;
- cc -= hlen;
-
- if (nflag)
- Printf(" %s", inet_ntoa(from->sin_addr));
- else
- Printf(" %s (%s)", inetname(from->sin_addr),
- inet_ntoa(from->sin_addr));
-
- if (verbose)
- Printf (" %d bytes to %s", cc, inet_ntoa (ip->ip_dst));
-}
-
-
-int
-main(argc, argv)
- int argc;
- char *argv[];
-{
- extern char *optarg;
- extern int optind;
- struct hostent *hp;
- struct protoent *pe;
- struct sockaddr_in from, *to;
- int ch, i, on, probe, seq, tos, ttl;
- WSADATA wsadata;
- INT status;
-
- on = 1;
- seq = tos = 0;
- to = (struct sockaddr_in *)&whereto;
- while ((ch = getopt(argc, argv, "dm:np:q:rs:t:w:v")) != EOF)
- switch(ch) {
- case 'd':
- options |= SO_DEBUG;
- break;
- case 'm':
- max_ttl = atoi(optarg);
- if (max_ttl <= 1) {
- Fprintf(stderr,
- "traceroute: max ttl must be >1.\n");
- WSACleanup();
- exit(1);
- }
- break;
- case 'n':
- nflag++;
- break;
- case 'p':
- port = atoi(optarg);
- if (port < 1) {
- Fprintf(stderr,
- "traceroute: port must be >0.\n");
- WSACleanup();
- exit(1);
- }
- break;
- case 'q':
- nprobes = atoi(optarg);
- if (nprobes < 1) {
- Fprintf(stderr,
- "traceroute: nprobes must be >0.\n");
- WSACleanup();
- exit(1);
- }
- break;
- case 'r':
- options |= SO_DONTROUTE;
- break;
- case 's':
- /*
- * set the ip source address of the outbound
- * probe (e.g., on a multi-homed host).
- */
- source = optarg;
- break;
- case 't':
- tos = atoi(optarg);
- if (tos < 0 || tos > 255) {
- Fprintf(stderr,
- "traceroute: tos must be 0 to 255.\n");
- WSACleanup();
- exit(1);
- }
- break;
- case 'v':
- verbose++;
- break;
- case 'w':
- waittime = atoi(optarg);
- if (waittime <= 1) {
- Fprintf(stderr,
- "traceroute: wait must be >1 sec.\n");
- WSACleanup();
- exit(1);
- }
- break;
- default:
- usage();
- }
- argc -= optind;
- argv += optind;
-
- if (argc < 1)
- usage();
-
- status = WSAStartup(MAKEWORD(2, 2), &wsadata);
- if (status != 0) {
- printf("Could not initialize winsock dll.\n");
- return FALSE;
- }
-
- setlinebuf (stdout);
-
- (void) bzero((char *)&whereto, sizeof(struct sockaddr));
- to->sin_family = AF_INET;
- to->sin_addr.s_addr = inet_addr(*argv);
- if (to->sin_addr.s_addr != -1)
- hostname = *argv;
- else {
- hp = gethostbyname(*argv);
- if (hp) {
- to->sin_family = hp->h_addrtype;
- bcopy(hp->h_addr, (caddr_t)&to->sin_addr, hp->h_length);
- hostname = hp->h_name;
- } else {
- (void)fprintf(stderr,
- "traceroute: unknown host %s\n", *argv);
- WSACleanup();
- exit(1);
- }
- }
- if (*++argv)
- datalen = atoi(*argv);
- if (datalen < 0 || datalen >= MAXPACKET - sizeof(struct opacket)) {
- Fprintf(stderr,
- "traceroute: packet size must be 0 <= s < %ld.\n",
- MAXPACKET - sizeof(struct opacket));
- WSACleanup();
- exit(1);
- }
- datalen += sizeof(struct opacket);
- outpacket = (struct opacket *)malloc((unsigned)datalen);
- if (! outpacket) {
- perror("traceroute: malloc");
- WSACleanup();
- exit(1);
- }
- (void) bzero((char *)outpacket, datalen);
- outpacket->ip.ip_dst = to->sin_addr;
- outpacket->ip.ip_tos = tos;
- outpacket->ip.ip_v = IPVERSION;
- outpacket->ip.ip_id = 0;
-
- ident = (getpid() & 0xffff) | 0x8000;
-
- if ((pe = getprotobyname("icmp")) == NULL) {
- Fprintf(stderr, "icmp: unknown protocol\n");
- WSACleanup();
- exit(10);
- }
- if ((s = socket(AF_INET, SOCK_RAW, pe->p_proto)) < 0) {
- perror("traceroute: icmp socket");
- WSACleanup();
- exit(5);
- }
- if (options & SO_DEBUG)
- (void) setsockopt(s, SOL_SOCKET, SO_DEBUG,
- (char *)&on, sizeof(on));
- if (options & SO_DONTROUTE)
- (void) setsockopt(s, SOL_SOCKET, SO_DONTROUTE,
- (char *)&on, sizeof(on));
-
- if ((sndsock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) {
- perror("traceroute: raw socket");
- WSACleanup();
- exit(5);
- }
-#ifdef SO_SNDBUF
- if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&datalen,
- sizeof(datalen)) < 0) {
- perror("traceroute: SO_SNDBUF");
- WSACleanup();
- exit(6);
- }
-#endif /* SO_SNDBUF */
-#ifdef IP_HDRINCL
- if (setsockopt(sndsock, IPPROTO_IP, IP_HDRINCL, (char *)&on,
- sizeof(on)) < 0) {
- perror("traceroute: IP_HDRINCL");
- WSACleanup();
- exit(6);
- }
-#endif /* IP_HDRINCL */
- if (options & SO_DEBUG)
- (void) setsockopt(sndsock, SOL_SOCKET, SO_DEBUG,
- (char *)&on, sizeof(on));
- if (options & SO_DONTROUTE)
- (void) setsockopt(sndsock, SOL_SOCKET, SO_DONTROUTE,
- (char *)&on, sizeof(on));
-
- if (source) {
- (void) bzero((char *)&from, sizeof(struct sockaddr));
- from.sin_family = AF_INET;
- from.sin_addr.s_addr = inet_addr(source);
- if (from.sin_addr.s_addr == -1) {
- Printf("traceroute: unknown host %s\n", source);
- WSACleanup();
- exit(1);
- }
- outpacket->ip.ip_src = from.sin_addr;
-#ifndef IP_HDRINCL
- if (bind(sndsock, (struct sockaddr *)&from, sizeof(from)) < 0) {
- perror ("traceroute: bind:");
- WSACleanup();
- exit (1);
- }
-#endif /* IP_HDRINCL */
- }
-
- Fprintf(stderr, "traceroute to %s (%s)", hostname,
- inet_ntoa(to->sin_addr));
- if (source)
- Fprintf(stderr, " from %s", source);
- Fprintf(stderr, ", %d hops max, %d byte packets\n", max_ttl, datalen);
- (void) fflush(stderr);
-
- for (ttl = 1; ttl <= max_ttl; ++ttl) {
- u_long lastaddr = 0;
- int got_there = 0;
- int unreachable = 0;
-
- Printf("%2d ", ttl);
- for (probe = 0; probe < nprobes; ++probe) {
- int cc;
- struct timeval t1, t2;
- struct timezone tz;
- struct ip *ip;
-
- (void) gettimeofday(&t1, &tz);
- send_probe(++seq, ttl);
- while (cc = wait_for_reply(s, &from)) {
- (void) gettimeofday(&t2, &tz);
- if ((i = packet_ok(packet, cc, &from, seq))) {
- if (from.sin_addr.s_addr != lastaddr) {
- print(packet, cc, &from);
- lastaddr = from.sin_addr.s_addr;
- }
- Printf(" %g ms", deltaT(&t1, &t2));
- switch(i - 1) {
- case ICMP_UNREACH_PORT:
-#ifndef ARCHAIC
- ip = (struct ip *)packet;
- if (ip->ip_ttl <= 1)
- Printf(" !");
-#endif /* ARCHAIC */
- ++got_there;
- break;
- case ICMP_UNREACH_NET:
- ++unreachable;
- Printf(" !N");
- break;
- case ICMP_UNREACH_HOST:
- ++unreachable;
- Printf(" !H");
- break;
- case ICMP_UNREACH_PROTOCOL:
- ++got_there;
- Printf(" !P");
- break;
- case ICMP_UNREACH_NEEDFRAG:
- ++unreachable;
- Printf(" !F");
- break;
- case ICMP_UNREACH_SRCFAIL:
- ++unreachable;
- Printf(" !S");
- break;
- }
- break;
- }
- }
- if (cc == 0)
- Printf(" *");
- (void) fflush(stdout);
- }
- putchar('\n');
- if (got_there || unreachable >= nprobes-1) {
- WSACleanup();
- exit(0);
- }
- }
-
- WSACleanup();
- return 0;
-}
-
-int
-wait_for_reply(sock, from)
- int sock;
- struct sockaddr_in *from;
-{
- fd_set fds;
- struct timeval wait;
- int cc = 0;
- int fromlen = sizeof (*from);
-
- FD_ZERO(&fds);
- FD_SET(sock, &fds);
- wait.tv_sec = waittime; wait.tv_usec = 0;
-
- if (select(sock+1, &fds, (fd_set *)0, (fd_set *)0, &wait) > 0)
- cc=recvfrom(s, (char *)packet, sizeof(packet), 0,
- (struct sockaddr *)from, &fromlen);
-
- return(cc);
-}
-
-
-void
-send_probe(seq, ttl)
- int seq, ttl;
-{
- struct opacket *op = outpacket;
- struct ip *ip = &op->ip;
- struct udphdr *up = &op->udp;
- int i;
-
- ip->ip_off = 0;
- ip->ip_hl = sizeof(*ip) >> 2;
- ip->ip_p = IPPROTO_UDP;
- ip->ip_len = datalen;
- ip->ip_ttl = ttl;
- ip->ip_v = IPVERSION;
- ip->ip_id = htons(ident+seq);
-
- up->uh_sport = htons(ident);
- up->uh_dport = htons(port+seq);
- up->uh_ulen = htons((u_short)(datalen - sizeof(struct ip)));
- up->uh_sum = 0;
-
- op->seq = seq;
- op->ttl = ttl;
- (void) gettimeofday(&op->tv, &tz);
-
- i = sendto(sndsock, (char *)outpacket, datalen, 0, &whereto,
- sizeof(struct sockaddr));
- if (i < 0 || i != datalen) {
- if (i<0)
- perror("sendto");
- Printf("traceroute: wrote %s %d chars, ret=%d\n", hostname,
- datalen, i);
- (void) fflush(stdout);
- }
-}
-
-
-double
-deltaT(t1p, t2p)
- struct timeval *t1p, *t2p;
-{
- register double dt;
-
- dt = (double)(t2p->tv_sec - t1p->tv_sec) * 1000.0 +
- (double)(t2p->tv_usec - t1p->tv_usec) / 1000.0;
- return (dt);
-}
-
-
-/*
- * Convert an ICMP "type" field to a printable string.
- */
-char *
-pr_type(t)
- u_char t;
-{
- static char *ttab[] = {
- "Echo Reply", "ICMP 1", "ICMP 2", "Dest Unreachable",
- "Source Quench", "Redirect", "ICMP 6", "ICMP 7",
- "Echo", "ICMP 9", "ICMP 10", "Time Exceeded",
- "Param Problem", "Timestamp", "Timestamp Reply", "Info Request",
- "Info Reply"
- };
-
- if(t > 16)
- return("OUT-OF-RANGE");
-
- return(ttab[t]);
-}
-
-
-int
-packet_ok(buf, cc, from, seq)
- u_char *buf;
- int cc;
- struct sockaddr_in *from;
- int seq;
-{
- register struct icmp *icp;
- u_char type, code;
- int hlen;
-#ifndef ARCHAIC
- struct ip *ip;
-
- ip = (struct ip *) buf;
- hlen = ip->ip_hl << 2;
- if (cc < hlen + ICMP_MINLEN) {
- if (verbose)
- Printf("packet too short (%d bytes) from %s\n", cc,
- inet_ntoa(from->sin_addr));
- return (0);
- }
- cc -= hlen;
- icp = (struct icmp *)(buf + hlen);
-#else
- icp = (struct icmp *)buf;
-#endif /* ARCHAIC */
- type = icp->icmp_type; code = icp->icmp_code;
- if ((type == ICMP_TIMXCEED && code == ICMP_TIMXCEED_INTRANS) ||
- type == ICMP_UNREACH) {
- struct ip *hip;
- struct udphdr *up;
-
- hip = &icp->icmp_ip;
- hlen = hip->ip_hl << 2;
- up = (struct udphdr *)((u_char *)hip + hlen);
- if (hlen + 12 <= cc && hip->ip_p == IPPROTO_UDP &&
- up->uh_sport == htons(ident) &&
- up->uh_dport == htons(port+seq))
- if (hlen + 12 <= cc && hip->ip_p == IPPROTO_UDP)
- return (type == ICMP_TIMXCEED? -1 : code+1);
- }
-#ifndef ARCHAIC
- if (verbose) {
- int i;
- u_long *lp = (u_long *)&icp->icmp_ip;
-
- Printf("\n%d bytes from %s to %s", cc,
- inet_ntoa(from->sin_addr), inet_ntoa(ip->ip_dst));
- Printf(": icmp type %d (%s) code %d\n", type, pr_type(type),
- icp->icmp_code);
- for (i = 4; i < cc ; i += sizeof(long))
- Printf("%2d: x%8.8lx\n", i, *lp++);
- }
-#endif /* ARCHAIC */
- return(0);
-}
-
-#ifdef notyet
-/*
- * Checksum routine for Internet Protocol family headers (C Version)
- */
-u_short
-in_cksum(addr, len)
- u_short *addr;
- int len;
-{
- register int nleft = len;
- register u_short *w = addr;
- register u_short answer;
- register int sum = 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)
- sum += *(u_char *)w;
-
- /*
- * 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);
-}
-#endif /* notyet */
-
-/*
- * Subtract 2 timeval structs: out = out - in.
- * Out is assumed to be >= in.
- */
-void
-tvsub(out, in)
- register struct timeval *out, *in;
-{
- if ((out->tv_usec -= in->tv_usec) < 0) {
- out->tv_sec--;
- out->tv_usec += 1000000;
- }
- out->tv_sec -= in->tv_sec;
-}
-
-
-/*
- * Construct an Internet address representation.
- * If the nflag has been supplied, give
- * numeric value, otherwise try for symbolic name.
- */
-char *
-inetname(in)
- struct in_addr in;
-{
- register char *cp;
- static char line[50];
- struct hostent *hp;
- static char domain[MAXHOSTNAMELEN + 1];
- static int first = 1;
-
- if (first && !nflag) {
- first = 0;
- if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
- (cp = strrchr(domain, '.')))
- (void) strcpy(domain, cp + 1);
- else
- domain[0] = 0;
- }
- cp = 0;
- if (!nflag && in.s_addr != INADDR_ANY) {
- hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
- if (hp) {
- if ((cp = strrchr(hp->h_name, '.')) &&
- !strcmp(cp + 1, domain))
- *cp = 0;
- cp = hp->h_name;
- }
- }
- if (cp)
- (void) strcpy(line, cp);
- else {
- in.s_addr = ntohl(in.s_addr);
-#define C(x) ((x) & 0xff)
- Sprintf(line, "%lu.%lu.%lu.%lu", C(in.s_addr >> 24),
- C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
- }
- return (line);
-}
-
-void
-usage()
-{
- (void)fprintf(stderr,
-"usage: traceroute [-dnrv] [-m max_ttl] [-p port#] [-q nqueries]\n\t\
-[-s src_addr] [-t tos] [-w wait] host [data size]\n");
- exit(1);
-}
+/* \r
+ * COPYRIGHT: See COPYING in the top level directory\r
+ * PROJECT: ReactOS traceroute utility\r
+ * FILE: apps/utils/net/tracert/tracert.c\r
+ * PURPOSE: trace a packets route through a network\r
+ * PROGRAMMERS: Ged Murphy (gedmurphy@gmail.com)\r
+ * REVISIONS:\r
+ * GM 03/05/05 Created\r
+ *\r
+ */\r
+\r
+\r
+#include <windows.h>\r
+#include <winsock2.h>\r
+#include <tchar.h>\r
+#include <stdio.h>\r
+#include <stdlib.h>\r
+#include <ws2tcpip.h>\r
+#include <string.h>\r
+#include <time.h>\r
+#include "tracert.h"\r
+\r
+#define WIN32_LEAN_AND_MEAN\r
+\r
+#ifdef DBG\r
+#undef DBG\r
+#endif\r
+\r
+/*\r
+ * globals\r
+ */\r
+SOCKET icmpSock; // socket descriptor \r
+SOCKADDR_IN source, dest; // source and destination address info\r
+ECHO_REPLY_HEADER sendpacket; // ICMP echo packet\r
+IPv4_HEADER recvpacket; // return reveive packet\r
+\r
+BOOL bUsePerformanceCounter; // whether to use the high res performance counter\r
+LARGE_INTEGER TicksPerMs; // number of millisecs in relation to proc freq\r
+LARGE_INTEGER TicksPerUs; // number of microsecs in relation to proc freq\r
+LONGLONG lTimeStart; // send packet, timer start\r
+LONGLONG lTimeEnd; // receive packet, timer end\r
+\r
+CHAR cHostname[256]; // target hostname\r
+CHAR cDestIP[18]; // target IP\r
+\r
+\r
+/*\r
+ * command line options\r
+ */\r
+BOOL bResolveAddresses = TRUE; // -d MS ping defaults to true.\r
+INT iMaxHops = 30; // -h Max number of hops before trace ends\r
+INT iHostList; // -j @UNIMPLEMENTED@\r
+INT iTimeOut = 2000; // -w time before packet times out\r
+\r
+\r
+\r
+\r
+/* \r
+ *\r
+ * Parse command line parameters and set any options\r
+ *\r
+ */\r
+BOOL ParseCmdline(int argc, char* argv[])\r
+{\r
+ int i;\r
+ \r
+ if (argc < 2) \r
+ {\r
+ Usage();\r
+ return FALSE;\r
+ }\r
+\r
+ for (i = 1; i < argc; i++) {\r
+ if (argv[i][0] == '-') {\r
+ switch (argv[i][1]) {\r
+ case 'd': bResolveAddresses = FALSE; \r
+ break;\r
+ case 'h': sscanf(argv[i+1], "%d", &iMaxHops); \r
+ break;\r
+ case 'l': break; /* @unimplemented@ */\r
+ case 'w': sscanf(argv[i+1], "%d", &iTimeOut); \r
+ break;\r
+ default:\r
+ _tprintf(_T("%s is not a valid option.\n"), argv[i]);\r
+ Usage();\r
+ return FALSE;\r
+ }\r
+ } else {\r
+ /* copy target address */\r
+ strncpy(cHostname, argv[i], 255);\r
+\r
+ }\r
+ }\r
+ \r
+ return TRUE;\r
+}\r
+\r
+\r
+\r
+/*\r
+ *\r
+ * Driver function, controls the traceroute program\r
+ * \r
+ */\r
+INT Driver(VOID) {\r
+ \r
+ INT i;\r
+ INT iHopCount = 1; // hop counter. default max is 30\r
+ INT iSeqNum = 0; // initialise packet sequence number\r
+ INT iTTL = 1; // set initial packet TTL to 1\r
+ BOOL bFoundTarget = FALSE; // Have we reached our destination yet\r
+ BOOL bAwaitPacket; // indicates whether we have recieved a good packet\r
+ INT iDecRes; // DecodeResponse return value\r
+ INT iRecieveReturn; // RecieveReturn return value\r
+ INT iNameInfoRet; // getnameinfo return value\r
+ INT iPacketSize = PACKET_SIZE; // packet size\r
+ WORD wHeaderLen; // header length\r
+ PECHO_REPLY_HEADER icmphdr; \r
+ \r
+ \r
+ //temps for getting host name\r
+ CHAR cHost[256];\r
+ CHAR cServ[256];\r
+ CHAR *ip;\r
+ \r
+ /* setup winsock */\r
+ WSADATA wsaData;\r
+\r
+ /* check for winsock 2 */\r
+ if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {\r
+#ifdef DBG\r
+ _tprintf(_T("WSAStartup failed.\n"));\r
+#endif /* DBG */\r
+ exit(1);\r
+ }\r
+ \r
+ SetupTimingMethod();\r
+ \r
+ /* setup target info */\r
+ ResolveHostname();\r
+\r
+ /* print standard tracing info to screen */\r
+ _tprintf(_T("\nTracing route to %s [%s]\n"), cHostname, cDestIP);\r
+ _tprintf(_T("over a maximum of %d hop"), iMaxHops);\r
+ iMaxHops > 1 ? _tprintf(_T("s:\n\n")) : _tprintf(_T(":\n\n"));\r
+\r
+ /* run until we hit either max hops, or we recieve 3 echo replys */\r
+ while ((iHopCount <= iMaxHops) && (bFoundTarget != TRUE)) {\r
+ _tprintf(_T("%3d "), iHopCount);\r
+ /* run 3 pings for each hop */\r
+ for (i=0; i<3; i++) {\r
+ if (Setup(iTTL) != TRUE) {\r
+#ifdef DBG\r
+ _tprintf(_T("error in Setup()\n"));\r
+#endif /* DBG */\r
+ WSACleanup();\r
+ exit(1);\r
+ }\r
+ PreparePacket(iPacketSize, iSeqNum);\r
+ if (SendPacket(iPacketSize) != SOCKET_ERROR) {\r
+ /* loop until we get a good packet */\r
+ bAwaitPacket = TRUE;\r
+ while (bAwaitPacket) {\r
+ /* Receive replies until we either get a successful\r
+ * read, or a fatal error occurs. */\r
+ if ((iRecieveReturn = ReceivePacket(iPacketSize)) < 0) {\r
+ /* check the sequence number in the packet\r
+ * if it's bad, complain and wait for another packet\r
+ * , otherwise break */\r
+ wHeaderLen = recvpacket.h_len * 4;\r
+ icmphdr = (ECHO_REPLY_HEADER *)((char*)&recvpacket + wHeaderLen);\r
+ if (icmphdr->icmpheader.seq != iSeqNum) {\r
+ _tprintf(_T("bad sequence number!\n"));\r
+ continue;\r
+ } else {\r
+ break;\r
+ }\r
+ }\r
+ \r
+ /* if RecievePacket timed out we don't bother decoding */\r
+ if (iRecieveReturn != 1) {\r
+ iDecRes = DecodeResponse(iPacketSize, iSeqNum);\r
+ \r
+ switch (iDecRes) {\r
+ case 0 : bAwaitPacket = FALSE; /* time exceeded */\r
+ break;\r
+ case 1 : bAwaitPacket = FALSE; /* echo reply */\r
+ break; \r
+ case 2 : bAwaitPacket = FALSE; /* destination unreachable */\r
+ break; \r
+#ifdef DBG \r
+ case -1 :\r
+ _tprintf(_T("recieved foreign packet\n")); \r
+ break;\r
+ case -2 : \r
+ _tprintf(_T("error in DecodeResponse\n")); \r
+ break;\r
+ case -3 : \r
+ _tprintf(_T("unknown ICMP packet\n")); \r
+ break;\r
+#endif /* DBG */\r
+ default : break;\r
+ }\r
+ } else {\r
+ /* packet timed out. Don't wait for it again */\r
+ bAwaitPacket = FALSE;\r
+ }\r
+ } \r
+ }\r
+\r
+ iSeqNum++;\r
+ _tprintf(_T(" "));\r
+ }\r
+\r
+ if(bResolveAddresses) {\r
+ /* gethostbyaddr() and getnameinfo() are \r
+ * unimplemented in ROS at present.\r
+ * Alex has advised he will be implementing gethostbyaddr\r
+ * but as it's depricieted and getnameinfo is much nicer,\r
+ * I've used that for the time being for testing in Windows*/\r
+ \r
+ //ip = inet_addr(inet_ntoa(source.sin_addr));\r
+ //host = gethostbyaddr((char *)&ip, 4, 0);\r
+ \r
+ ip = inet_ntoa(source.sin_addr);\r
+\r
+ iNameInfoRet = getnameinfo((SOCKADDR *)&source,\r
+ sizeof(SOCKADDR),\r
+ cHost,\r
+ 256,\r
+ cServ,\r
+ 256,\r
+ NI_NUMERICSERV);\r
+ if (iNameInfoRet == 0) {\r
+ /* if IP address resolved to a hostname,\r
+ * print the IP address after it */ \r
+ if (lstrcmpA(cHost, ip) != 0) {\r
+ _tprintf(_T("%s [%s]"), cHost, ip);\r
+ } else {\r
+ _tprintf(_T("%s"), cHost);\r
+ }\r
+ } else {\r
+ _tprintf(_T("error: %d"), WSAGetLastError()); \r
+#ifdef DBG\r
+ _tprintf(_T(" getnameinfo failed: %d"), iNameInfoRet);\r
+#endif /* DBG */ \r
+ }\r
+\r
+ } else {\r
+ _tprintf(_T("%s"), inet_ntoa(source.sin_addr));\r
+ }\r
+ _tprintf(_T("\n"));\r
+\r
+ /* check if we've arrived at the target */\r
+ if (strcmp(cDestIP, inet_ntoa(source.sin_addr)) == 0) {\r
+ bFoundTarget = TRUE;\r
+ } else {\r
+ iTTL++;\r
+ iHopCount++;\r
+ Sleep(500);\r
+ }\r
+ }\r
+ _tprintf(_T("\nTrace complete.\n"));\r
+ WSACleanup();\r
+ \r
+ return 0;\r
+}\r
+\r
+/*\r
+ * Establish if performance counters are available and\r
+ * set up timing figures in relation to processor frequency.\r
+ * If performance counters are not available, we'll be using \r
+ * gettickcount, so set the figures to 1\r
+ *\r
+ */\r
+VOID SetupTimingMethod(VOID)\r
+{\r
+ LARGE_INTEGER PerformanceCounterFrequency;\r
+ \r
+ /* check if performance counters are available */\r
+ bUsePerformanceCounter = QueryPerformanceFrequency(&PerformanceCounterFrequency);\r
+ if (bUsePerformanceCounter) {\r
+ /* restrict execution to first processor on SMP systems */\r
+ if (SetThreadAffinityMask(GetCurrentThread(), 1) == 0) {\r
+ bUsePerformanceCounter = FALSE;\r
+ }\r
+ \r
+ TicksPerMs.QuadPart = PerformanceCounterFrequency.QuadPart / 1000;\r
+ TicksPerUs.QuadPart = PerformanceCounterFrequency.QuadPart / 1000000;\r
+ }\r
+ \r
+ if (!bUsePerformanceCounter) {\r
+ TicksPerMs.QuadPart = 1;\r
+ TicksPerUs.QuadPart = 1;\r
+ } \r
+}\r
+\r
+\r
+/*\r
+ *\r
+ * Check for a hostname or dotted deciamal for our target.\r
+ * If we have a hostname, resolve to an IP and store it, else\r
+ * just store the target IP address. Also set up other key \r
+ * SOCKADDR_IN members needed for the connection.\r
+ *\r
+ */\r
+VOID ResolveHostname(VOID)\r
+{\r
+ HOSTENT *hp;\r
+ ULONG addr;\r
+ \r
+ memset(&dest, 0, sizeof(dest));\r
+\r
+ addr = inet_addr(cHostname);\r
+ /* if address is not a dotted decimal */\r
+ if (addr == INADDR_NONE) {\r
+ hp = gethostbyname(cHostname);\r
+ if (hp != 0) {\r
+ memcpy(&dest.sin_addr, hp->h_addr, hp->h_length);\r
+ //dest.sin_addr = *((struct in_addr *)hp->h_addr);\r
+ dest.sin_family = hp->h_addrtype;\r
+ } else {\r
+ _tprintf(_T("Unable to resolve target system name %s.\n"), cHostname);\r
+ WSACleanup();\r
+ exit(1);\r
+ }\r
+ } else {\r
+ dest.sin_addr.s_addr = addr;\r
+ dest.sin_family = AF_INET;\r
+ }\r
+ /* copy destination IP address into a string */\r
+ strcpy(cDestIP, inet_ntoa(dest.sin_addr)); \r
+}\r
+\r
+\r
+\r
+/*\r
+ *\r
+ * Create our socket which will be used for sending and recieving,\r
+ * Socket Type is raw, Protocol is ICMP. Also set the TTL value which will be\r
+ * set in the outgoing IP packet.\r
+ *\r
+ */\r
+INT Setup(INT iTTL)\r
+{\r
+ INT iSockRet;\r
+\r
+ /* create raw socket */\r
+ icmpSock = WSASocket(AF_INET, SOCK_RAW, IPPROTO_ICMP, 0, 0, 0);\r
+ if (icmpSock == INVALID_SOCKET) {\r
+ _tprintf(_T("Could not create socket : %d.\n"), WSAGetLastError());\r
+ if (WSAGetLastError() == WSAEACCES) {\r
+ _tprintf(_T("\n\nYou must be an administrator to run this program!\n\n"));\r
+ WSACleanup();\r
+ exit(1);\r
+ }\r
+ return FALSE;\r
+ }\r
+ \r
+ /* setup for TTL */\r
+ iSockRet = setsockopt(icmpSock, IPPROTO_IP, IP_TTL, (const char *)&iTTL, sizeof(iTTL));\r
+ if (iSockRet == SOCKET_ERROR) {\r
+ _tprintf(_T("TTL setsockopt failed : %d. \n"), WSAGetLastError());\r
+ return FALSE;\r
+ }\r
+ \r
+ return TRUE;\r
+}\r
+\r
+\r
+\r
+/*\r
+ * Prepare the ICMP echo request packet for sending.\r
+ * Calculate the packet checksum\r
+ *\r
+ */\r
+VOID PreparePacket(INT iPacketSize, INT iSeqNum) \r
+{\r
+ /* assemble ICMP echo request packet */\r
+ sendpacket.icmpheader.type = ECHO_REQUEST;\r
+ sendpacket.icmpheader.code = 0;\r
+ sendpacket.icmpheader.checksum = 0;\r
+ sendpacket.icmpheader.id = (USHORT)GetCurrentProcessId();\r
+ sendpacket.icmpheader.seq = iSeqNum;\r
+\r
+ /* calculate checksum of packet */\r
+ sendpacket.icmpheader.checksum = CheckSum((PUSHORT)&sendpacket, sizeof(ICMP_HEADER) + iPacketSize);\r
+}\r
+\r
+\r
+\r
+/*\r
+ *\r
+ * Get the system time and send the ICMP packet to the destination\r
+ * address.\r
+ *\r
+ */\r
+INT SendPacket(INT datasize)\r
+{\r
+ INT iSockRet;\r
+ INT iPacketSize;\r
+ \r
+ iPacketSize = sizeof(ECHO_REPLY_HEADER) + datasize;\r
+\r
+#ifdef DBG\r
+ _tprintf(_T("\nsending packet of %d bytes\n"), iPacketSize);\r
+#endif /* DBG */\r
+\r
+ /* get time packet was sent */\r
+ lTimeStart = GetTime();\r
+\r
+ iSockRet = sendto(icmpSock, //socket\r
+ (char *)&sendpacket, //buffer\r
+ iPacketSize, //size of buffer\r
+ 0, //flags\r
+ (SOCKADDR *)&dest, //destination\r
+ sizeof(dest)); //address length\r
+ \r
+ if (iSockRet == SOCKET_ERROR) {\r
+ if (WSAGetLastError() == WSAEACCES) {\r
+ _tprintf(_T("\n\nYou must be an administrator to run this program!\n\n"));\r
+ exit(1);\r
+ WSACleanup();\r
+ } else {\r
+#ifdef DBG\r
+ _tprintf(_T("sendto failed %d\n"), WSAGetLastError());\r
+#endif /* DBG */ \r
+ return FALSE;\r
+ }\r
+ }\r
+#ifdef DBG\r
+ _tprintf(_T("sent %d bytes\n"), iSockRet);\r
+#endif /* DBG */\r
+\r
+ /* return number of bytes sent */\r
+ return iSockRet;\r
+}\r
+\r
+\r
+\r
+/*\r
+ *\r
+ * Set up a timeout value and put the socket in a select poll.\r
+ * Wait until we recieve an IPv4 reply packet in reply to the ICMP \r
+ * echo request packet and get the time the packet was recieved.\r
+ * If we don't recieve a packet, do some checking to establish why.\r
+ *\r
+ */\r
+INT ReceivePacket(INT datasize)\r
+{\r
+ TIMEVAL timeVal;\r
+ FD_SET readFDS;\r
+ int iSockRet, iSelRet;\r
+ int iFromLen;\r
+ int iPacketSize;\r
+\r
+ /* allow for a larger recv buffer to store ICMP TTL\r
+ * exceed, IP header and orginal ICMP request */\r
+ iPacketSize = MAX_REC_SIZE + datasize; \r
+\r
+ iFromLen = sizeof(source);\r
+\r
+#ifdef DBG\r
+ _tprintf(_T("receiving packet. Available buffer, %d bytes\n"), iPacketSize);\r
+#endif /* DBG */\r
+\r
+ /* monitor icmpSock for incomming connections */\r
+ FD_ZERO(&readFDS);\r
+ FD_SET(icmpSock, &readFDS);\r
+ \r
+ /* set timeout values */\r
+ timeVal.tv_sec = iTimeOut / 1000;\r
+ timeVal.tv_usec = iTimeOut % 1000;\r
+ \r
+ iSelRet = select(0, &readFDS, NULL, NULL, &timeVal);\r
+ \r
+ if ((iSelRet != SOCKET_ERROR) && (iSelRet != 0)) {\r
+ iSockRet = recvfrom(icmpSock, //socket\r
+ (char *)&recvpacket, //buffer\r
+ iPacketSize, //size of buffer\r
+ 0, //flags\r
+ (SOCKADDR *)&source, //source address\r
+ &iFromLen); //pointer to address length\r
+ /* get time packet was recieved */\r
+ lTimeEnd = GetTime(); \r
+ /* if socket timed out */ \r
+ } else if (iSelRet == 0) {\r
+ _tprintf(_T(" * "));\r
+ return 1;\r
+ } else if (iSelRet == SOCKET_ERROR) {\r
+ _tprintf(_T("select() failed in sendPacket() %d\n"), WSAGetLastError());\r
+ return -1;\r
+ }\r
+\r
+ \r
+ if (iSockRet == SOCKET_ERROR) {\r
+ _tprintf(_T("recvfrom failed: %d\n"), WSAGetLastError());\r
+ return -2;\r
+ }\r
+#ifdef DBG\r
+ else {\r
+ _tprintf(_T("reveived %d bytes\n"), iSockRet);\r
+ }\r
+#endif /* DBG */\r
+\r
+ return 0;\r
+}\r
+\r
+\r
+\r
+/*\r
+ *\r
+ * Cast the IPv4 packet to an echo reply and to a TTL exceed.\r
+ * Check the 'type' field to establish what was recieved, and \r
+ * ensure the packet is related to the originating process.\r
+ * It all is well, print the time taken for the round trip.\r
+ *\r
+ */\r
+INT DecodeResponse(INT iPacketSize, INT iSeqNum)\r
+{\r
+ unsigned short header_len = recvpacket.h_len * 4;\r
+ /* cast the recieved packet into an ECHO reply and a TTL Exceed so we can check the ID*/\r
+ ECHO_REPLY_HEADER *IcmpHdr = (ECHO_REPLY_HEADER *)((char*)&recvpacket + header_len);\r
+ TTL_EXCEED_HEADER *TTLExceedHdr = (TTL_EXCEED_HEADER *)((char *)&recvpacket + header_len);\r
+\r
+ /* Make sure the reply is ok */\r
+ if (iPacketSize < header_len + ICMP_MIN_SIZE) {\r
+ _tprintf(_T("too few bytes from %s\n"), inet_ntoa(dest.sin_addr));\r
+ return -2;\r
+ } \r
+ \r
+ switch (IcmpHdr->icmpheader.type) {\r
+ case TTL_EXCEEDED :\r
+ if (TTLExceedHdr->OrigIcmpHeader.id != (USHORT)GetCurrentProcessId()) {\r
+ /* FIXME */\r
+ /* we've picked up a packet not related to this process\r
+ * probably from another local program. We ignore it */\r
+#ifdef DGB\r
+ _tprintf(_T("header id, process id %d"), TTLExceedHdr->OrigIcmpHeader.id, GetCurrentProcessId());\r
+#endif /* DBG */\r
+ //_tprintf(_T("oops ");\r
+ return -1;\r
+ }\r
+ _tprintf(_T("%3Ld ms"), (lTimeEnd - lTimeStart) / TicksPerMs.QuadPart);\r
+ return 0;\r
+ case ECHO_REPLY :\r
+ if (IcmpHdr->icmpheader.id != (USHORT)GetCurrentProcessId()) {\r
+ /* FIXME */\r
+ /* we've picked up a packet not related to this process\r
+ * probably from another local program. We ignore it */\r
+#ifdef DGB\r
+ _tprintf(_T("\nPicked up wrong packet. icmpheader.id = %d and process id = %d"), IcmpHdr->icmpheader.id, GetCurrentProcessId());\r
+#endif /* DBG */\r
+ //_tprintf(_T("oops ");\r
+ return -1;\r
+ }\r
+ _tprintf(_T("%3Ld ms"), (lTimeEnd - lTimeStart) / TicksPerMs.QuadPart);\r
+ return 1;\r
+ case DEST_UNREACHABLE :\r
+ _tprintf(_T(" * "));\r
+ return 2;\r
+ default :\r
+ /* unknown ICMP packet */\r
+ return -3;\r
+ } \r
+}\r
+\r
+\r
+/*\r
+ *\r
+ * Get the system time using preformance counters if available,\r
+ * otherwise fall back to GetTickCount()\r
+ *\r
+ */\r
+\r
+LONG GetTime(VOID) \r
+{\r
+ LARGE_INTEGER Time;\r
+ \r
+ if (bUsePerformanceCounter) {\r
+ if (QueryPerformanceCounter(&Time) == 0) {\r
+ Time.u.LowPart = (DWORD)GetTickCount();\r
+ Time.u.HighPart = 0;\r
+ return (LONGLONG)Time.u.LowPart;\r
+ } \r
+ } else {\r
+ Time.u.LowPart = (DWORD)GetTickCount();\r
+ Time.u.HighPart = 0;\r
+ return (LONGLONG)Time.u.LowPart;\r
+ }\r
+ return Time.QuadPart;\r
+}\r
+\r
+\r
+/*\r
+ *\r
+ * Calculate packet checksum.\r
+ *\r
+ */\r
+WORD CheckSum(PUSHORT data, UINT size)\r
+{\r
+ DWORD dwSum = 0;\r
+\r
+ while (size > 1) {\r
+ dwSum += *data++;\r
+ size -= sizeof(USHORT);\r
+ }\r
+\r
+ if (size)\r
+ dwSum += *(UCHAR*)data;\r
+\r
+ dwSum = (dwSum >> 16) + (dwSum & 0xFFFF);\r
+ dwSum += (dwSum >> 16);\r
+\r
+ return (USHORT)(~dwSum);\r
+}\r
+\r
+\r
+/*\r
+ *\r
+ * print program usage to screen\r
+ *\r
+ */\r
+VOID Usage(VOID)\r
+{\r
+ _tprintf(_T("\nUsage: tracert [-d] [-h maximum_hops] [-j host-list] [-w timeout] target_name\n\n"));\r
+ _tprintf(_T("Options:\n"));\r
+ _tprintf(_T(" -d Do not resolve addresses to hostnames.\n"));\r
+ _tprintf(_T(" -h maximum_hops Maximum number of hops to search for target.\n"));\r
+ _tprintf(_T(" -j host-list Loose source route along host-list.\n"));\r
+ _tprintf(_T(" -w timeout Wait timeout milliseconds for each reply.\n\n"));\r
+ \r
+ /* temp notes to stop user questions until getnameinfo/gethostbyaddr and getsockopt are implemented */\r
+ _tprintf(_T("NOTES\n-----\n"\r
+ "- Setting TTL values is not currently supported in ReactOS, so the trace will\n"\r
+ " jump straight to the destination. This feature will be implemented soon.\n"\r
+ "- Host info is not currently available in ReactOS and will fail with strange\n"\r
+ " results. Use -d to force it not to resolve IP's.\n"\r
+ "- For testing purposes, all should work as normal in a Windows environment\n\n"));\r
+}\r
+\r
+\r
+\r
+/*\r
+ *\r
+ * Program entry point\r
+ *\r
+ */\r
+int main(int argc, char* argv[])\r
+{\r
+ if (!ParseCmdline(argc, _argv)) return -1;\r
+\r
+ Driver();\r
+\r
+ return 0;\r
+}\r
projects / reactos.git / commitdiff