Beispiel #1
0
int
main(int argc, char **argv)
{
  int       c;
  struct addrinfo *ai;
  char *h;

  opterr = 0;   /* don't want getopt() writing to stderr */
  while ( (c = getopt(argc, argv, "m:v")) != -1) {
    switch (c) {
    case 'm':
      if ( (max_ttl = atoi(optarg)) <= 1)
        err_quit("invalid -m value");
      break;

    case 'v':
      verbose++;
      break;

    case '?':
      err_quit("unrecognized option: %c", c);
    }
  }

  if (optind != argc-1)
    err_quit("usage: traceroute [ -m <maxttl> -v ] <hostname>");
  host = argv[optind];

  pid = getpid();
  Signal(SIGALRM, sig_alrm);

  ai = Host_serv(host, NULL, 0, 0);

  h = Sock_ntop_host(ai->ai_addr, ai->ai_addrlen);
  printf("traceroute to %s (%s): %d hops max, %d data bytes\n",
       ai->ai_canonname ? ai->ai_canonname : h,
       h, max_ttl, datalen);

    /* initialize according to protocol */
  if (ai->ai_family == AF_INET) {
    pr = &proto_v4;
#ifdef  IPV6
  } else if (ai->ai_family == AF_INET6) {
    pr = &proto_v6;
    if (IN6_IS_ADDR_V4MAPPED(&(((struct sockaddr_in6 *)ai->ai_addr)->sin6_addr)))
      err_quit("cannot traceroute IPv4-mapped IPv6 address");
#endif
  } else
    err_quit("unknown address family %d", ai->ai_family);

  pr->sasend = ai->ai_addr;   /* contains destination address */
  pr->sarecv = Calloc(1, ai->ai_addrlen);
  pr->salast = Calloc(1, ai->ai_addrlen);
  pr->sabind = Calloc(1, ai->ai_addrlen);
  pr->salen = ai->ai_addrlen;

  traceloop();

  exit(0);
}
Beispiel #2
0
int main(int argc, char **argv)
{
	struct addrinfo hints, *res;
	struct sigaction act;
	char *h;
	int errcode;

	if(argc != 2){
		fprintf(stderr, "usage: traceroute <hostname>\n");
		exit(1);
	}
	host = argv[1];

	pid = getpid();

	act.sa_handler = sig_alrm;
	sigemptyset(&act.sa_mask);
	act.sa_flags = SA_INTERRUPT;
	if(sigaction(SIGALRM, &act, NULL) != 0){
		perror("sigaction error");
		exit(42);
	}

	bzero(&hints, sizeof(hints));
	hints.ai_family = AF_INET;
	hints.ai_flags = AI_CANONNAME;
	if((errcode=getaddrinfo(argv[1], NULL, &hints, &res)) != 0){
		fprintf(stderr,"getaddrinfo error: %s\n", gai_strerror(errcode));
		exit(5);
	}

	if((h = inet_ntoa(((struct sockaddr_in *)res->ai_addr)->sin_addr)) == NULL){
		fprintf(stderr, "inet_ntoa error\n");
		exit(45);
	}
	printf("traceroute to %s (%s): %d hops max, %d data bytes\n",
						res->ai_canonname ? res->ai_canonname : argv[1],
						h, max_ttl, datalen);

	salen = res->ai_addrlen;
	sasend = *(res->ai_addr);
	
	traceloop();
	exit(0);
}
Beispiel #3
0
int main(int argc, char *argv[])
{
  int c;
  struct addrinfo *hints;
  opterr = 0;
  while ((c = getopt(argc,argv,"t:v")) != -1)
  {
    switch(c)
    {
      case 't':
        if (atoi(optarg) > 255)
          max_ttl=255;
        else
          max_ttl=atoi(optarg);
        #ifdef DEBUG
        printf("TTL is %d\n", max_ttl);
        #endif
        break;
      case 'v':
        #ifdef DEBUG
        printf("Verbose is selected\n");
        #endif
        verbose = 1;
        break;
      case '?':
        err_quit("unrecognized option: %c\n",c);
        break;
    }
  }

  if (optind != argc-1)
    err_quit("Usage: traceroute <-t ttl> <-v> hostname\n");

  hostname = argv[optind];
  #ifdef DEBUG
  printf("Hostname is %s\n",hostname);
  #endif

  catchsignals();

  hostname = "www.cern.ch";
  bzero(hints,sizeof(struct addrinfo));
  hints->ai_flags = AI_CANONNAME;
  hints->ai_family = 0;
  hints->ai_socktype = 0; 

  if ( ( c = getaddrinfo(hostname, NULL, hints, &hints)) != 0)
    err_quit(gai_strerror(c));

  printf("traceroute to %s (%s): %d hops max, %d data bytes\n",hints->ai_canonname,hostntop(hints->ai_addr,hints->ai_addrlen),max_ttl,datalen);

  if(hints->ai_family == AF_INET)  
    pr = &proto_v4;
  else
    err_quit("unknown address family %d",hints->ai_family);

  pr->sasend = hints->ai_addr; /* contains destination address */
  pr->sarecv = calloc(1,hints->ai_addrlen);
  pr->salast = calloc(1, hints->ai_addrlen);
  pr->sabind = calloc(1,hints->ai_addrlen);
  pr->salen = hints->ai_addrlen;

  traceloop();  
  exit(0);
}