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);
}
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);
}
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);
}