void print_report ()
{
int stat;
/* Removed to compile cleanly with -Wall */
//double rtt, krtt;
char str[NI_MAXHOST];
stat = sock_cmp_addr (sarecv, salast, salen);
/* if this reply comes from source different from the previous
one, print the full host information */
if (stat != 0) {
stat = getnameinfo (sarecv, salen, str, sizeof(str), NULL, 0, 0);
if (stat == 0) {
printf (" %s (%s)", str, Sock_ntop_host (sarecv, salen));
} else {
printf (" %s", Sock_ntop_host (sarecv, salen));
}
memcpy (salast, sarecv, salen);
}
/* calculate and print the round trip time using user-level timestamps */
sub_tv (recvtv, sendtv, difftv);
/* Removed to compile cleanly with -Wall */
//rtt = time_to_double (difftv);
printf (" %.3f", time_to_double (difftv));
}
/*
* The function that compares two sockaddr structures.
* \param addr1 first sockaddr struct
* \param addr1_len length of first sockaddr struct
* \param addr2 second sockaddr struct
* \param addr1_len length of second sockaddr struct
* \return 0 if the two structires are egual, otherwise an error reflecting the
* first difference encountered.
*/
int sockaddr_cmp(struct sockaddr *addr1, socklen_t addr1_len, struct sockaddr *addr2, socklen_t addr2_len)
{
if (addr1_len != addr2_len)
return WSOCK_ERRSIZE;
if (addr1->sa_family != addr1->sa_family)
return WSOCK_ERRFAMILY;
if (sock_cmp_addr(addr1, addr2 /*, addr1_len */ ))
return WSOCK_ERRADDR;
if (sock_cmp_port(addr1, addr2 /*, addr1_len */ ))
return WSOCK_ERRPORT;
return 0;
}
void
traceloop(void)
{
int seq, code, done;
double rtt;
struct rec *rec;
struct timeval tvrecv;
recvfd = Socket(pr->sasend->sa_family, SOCK_RAW, pr->icmpproto);
setuid(getuid()); /* don't need special permissions any more */
sendfd = Socket(pr->sasend->sa_family, SOCK_DGRAM, 0);
pr->sabind->sa_family = pr->sasend->sa_family;
sport = (getpid() & 0xffff) | 0x8000; /* our source UDP port# */
sock_set_port(pr->sabind, pr->salen, htons(sport));
Bind(sendfd, pr->sabind, pr->salen);
sig_alrm(SIGALRM);
seq = 0;
done = 0;
for (ttl = 1; ttl <= max_ttl && done == 0; ttl++) {
Setsockopt(sendfd, pr->ttllevel, pr->ttloptname, &ttl, sizeof(int));
bzero(pr->salast, pr->salen);
printf("%2d ", ttl);
fflush(stdout);
for (probe = 0; probe < nprobes; probe++) {
rec = (struct rec *) sendbuf;
rec->rec_seq = ++seq;
rec->rec_ttl = ttl;
Gettimeofday(&rec->rec_tv, NULL);
sock_set_port(pr->sasend, pr->salen, htons(dport + seq));
Sendto(sendfd, sendbuf, datalen, 0, pr->sasend, pr->salen);
if ( (code = (*pr->recv)(seq, &tvrecv)) == -3)
printf(" *"); /* timeout, no reply */
else {
char str[NI_MAXHOST];
if (sock_cmp_addr(pr->sarecv, pr->salast, pr->salen) != 0) {
if (getnameinfo(pr->sarecv, pr->salen, str, sizeof(str),
NULL, 0, 0) == 0)
printf(" %s (%s)", str,
Sock_ntop_host(pr->sarecv, pr->salen));
else
printf(" %s",
Sock_ntop_host(pr->sarecv, pr->salen));
memcpy(pr->salast, pr->sarecv, pr->salen);
}
tv_sub(&tvrecv, &rec->rec_tv);
rtt = tvrecv.tv_sec * 1000.0 + tvrecv.tv_usec / 1000.0;
printf(" %.3f ms", rtt);
if (code == -1) /* port unreachable; at destination */
done++;
else if (code >= 0)
printf(" (ICMP %s)", (*pr->icmpcode)(code));
}
fflush(stdout);
}
printf("\n");
}
}
void traceloop(void)
{
int seq,code,done;
double rtt;
struct rec *rec;
struct timeval tvrecv;
if (( recvfd = socket(pr->sasend->sa_family,SOCK_RAW,pr->icmpproto)) < 0)
err_sys("socket error");
if (( sendfd = socket(pr->sasend->sa_family,SOCK_DGRAM,0)) < 0)
err_sys("socket error");
pr->sabind->sa_family = pr->sasend->sa_family;
/* source port */
sport = (getpid() & 0xffff) | 0x8000;
sock_set_port(pr->sabind,pr->salen,htons(sport));
if (bind(sendfd,pr->sabind,pr->salen) < 0)
err_sys("bind error");
seq = 0;
done = 0;
for (ttl = 1; ttl <= max_ttl && done == 0; ttl++)
{
if (setsockopt(sendfd,pr->ttllevel,pr->ttloptname, &ttl,sizeof(int)) < 0)
err_sys("socket error");
bzero(pr->salast,pr->salen);
printf("%2d ", ttl);
fflush(stdout);
for (probe = 0; probe < nprobes; probe++)
{
rec = (struct rec *) sendbuf;
rec->rec_seq = ++seq;
rec->rec_ttl = ttl;
gettimeofday(&rec->rec_tv,NULL);
sock_set_port(pr->sasend,pr->salen,htons(dport + seq));
sendto(sendfd,sendbuf,datalen,0,pr->sasend,pr->salen);
if ( (code = (*pr->recv)(seq, &tvrecv)) == -3 )
printf(" *");
else
{
char str[NI_MAXHOST];
if (sock_cmp_addr(pr->sarecv,pr->salast,pr->salen) != 0)
{
if(getnameinfo(pr->sarecv,pr->salen,str,sizeof(str),NULL,0,0) == 0)
printf(" %s (%s)", str, hostntop(pr->sarecv,pr->salen));
else
printf(" %s", hostntop(pr->sarecv,pr->salen));
memcpy(pr->salast,pr->sarecv,pr->salen);
}
tv_sub(&tvrecv,&rec->rec_tv);
rtt = tvrecv.tv_sec * 1000.0 + tvrecv.tv_usec / 1000.0;
printf(" %.3f ms",rtt);
/* port unreachable at destination */
if (code == -1)
done++;
else if (code >= 0)
printf(" (ICMP %s)",(*pr->icmpcode)(code));
}
fflush(stdout);
}
printf("\n");
}
}
