int threads_process(intrace_t * intrace)
{
int err;
pthread_attr_t attr;
pthread_t t;
if (pthread_mutex_init(&intrace->mutex, NULL) != 0) {
debug_printf(dlFatal, "threads: Mutex initialization failed\n");
return errMutex;
}
debug_printf(dlDebug, "Resolving '%s'\n", intrace->hostname);
if (!threads_resolveIP(intrace, intrace->hostname)) {
debug_printf(dlFatal, "Resolving '%s' failed\n", intrace->hostname);
return errResolve;
}
char haddr[INET6_ADDRSTRLEN];
if (!inet_ntop(_IT_AF(intrace), _IT_RIP(intrace), haddr, sizeof(haddr))) {
debug_printf(dlFatal, "Cannot convert IP addr to a text form\n");
return errResolve;
}
debug_printf(dlDebug, "%s for '%s' resolved='%s'\n", _IT_IPSTR(intrace), intrace->hostname,
haddr);
if ((err = listener_init(intrace)) != errNone) {
debug_printf(dlFatal, "threads: Listener initialization failed, err=%d'\n", err);
return err;
}
if ((err = sender_init(intrace)) != errNone) {
debug_printf(dlFatal, "threads: Packet sender initialization failed, err=%d\n",
err);
return err;
}
if ((err = threads_dropPrivs()) != errNone) {
debug_printf(dlFatal, "threads: Couldn't drop privileges, err=%d\n", err);
return err;
}
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
if (pthread_create(&t, &attr, listener_thr, (void *)intrace) < 0) {
debug_printf(dlFatal, "threads: Cannot create listener thread\n");
return errThread;
}
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
if (pthread_create(&t, &attr, sender_thr, (void *)intrace) < 0) {
debug_printf(dlFatal, "threads: Cannot create sender thread\n");
return errThread;
}
display_process(intrace);
return errNone;
}
int display_process(intrace_t * intrace)
{
display_disableScroll();
display_clr();
for (;;) {
display_cursPos(0, 0);
/* Lock mutex */
while (pthread_mutex_lock(&intrace->mutex)) ;
char locAddr[INET6_ADDRSTRLEN], rmtAddr[INET6_ADDRSTRLEN];
inet_ntop(_IT_AF(intrace), _IT_LIP(intrace), locAddr, sizeof(locAddr));
inet_ntop(_IT_AF(intrace), _IT_RIP(intrace), rmtAddr, sizeof(rmtAddr));
printf("=========================[ %s %s ]========================\n", INTRACE_NAME, INTRACE_VERSION);
printf("Remote: %s/%d (%d)\n", rmtAddr, intrace->rport, intrace->port ? intrace->port : 0);
printf("Local: %s/%d\n", locAddr, intrace->lport);
printf("Payload Size: %zu bytes, Seq: 0x%08x, Ack: 0x%08x\n", intrace->paylSz,
intrace->seq, intrace->ack);
if (intrace->cnt >= MAX_HOPS)
intrace->cnt = 0;
if (!intrace->seq)
printf("%-75s", "Status: Sniffing for connection packets");
else if (!intrace->cnt)
printf("%-75s", "Status: Press ENTER");
else
printf("Status: Packets sent #%-50d", intrace->cnt - 1);
printf("\n\n");
if (intrace->isIPv6)
printf("%3s %-41s %-41s %s\n", "#", "[src addr]", "[icmp src addr]",
"[pkt type]");
else
printf("%3s %-17s %-17s %s\n", "#", "[src addr]", "[icmp src addr]",
"[pkt type]");
for (int i = 1; i <= intrace->maxhop; i++) {
const char *pktType = "NO REPLY";
if (intrace->listener.proto[i] == IPPROTO_TCP)
pktType = "TCP";
else if (intrace->listener.proto[i] == IPPROTO_ICMP
|| intrace->listener.proto[i] == IPPROTO_ICMPV6) {
if (!_IT_IPCMP(intrace, _IT_TRACE_IP(intrace, i), _IT_RIP(intrace)))
pktType = "ICMP_TIMXCEED";
else
pktType = "ICMP_TIMXCEED NAT";
} else if (intrace->listener.proto[i] == -1)
pktType = "TCP_RST";
char ipPktAddr[] = " --- ";
if (!_IT_ISANY(intrace, _IT_TRACE_IP(intrace, i))) {
inet_ntop(_IT_AF(intrace), _IT_TRACE_IP(intrace, i), ipPktAddr,
strlen(ipPktAddr));
}
char icmpPktAddr[] = " --- ";
if (!_IT_ISANY(intrace, _IT_TRACE_ICMP(intrace, i))) {
inet_ntop(_IT_AF(intrace), _IT_TRACE_ICMP(intrace, i), icmpPktAddr,
strlen(icmpPktAddr));
}
if (intrace->isIPv6)
printf("%2d. [%-39s] [%-39s] [%s]\n", i, ipPktAddr, icmpPktAddr,
pktType);
else
printf("%2d. [%-15.15s] [%-15.15s] [%s]\n", i, ipPktAddr,
icmpPktAddr, pktType);
}
if (display_selectInput() > 0) {
if (!intrace->cnt && intrace->seq) {
intrace->cnt = 1;
intrace->maxhop = 0;
bzero(intrace->listener.ip_trace,
sizeof(intrace->listener.ip_trace));
bzero(intrace->listener.ip_trace6,
sizeof(intrace->listener.ip_trace6));
bzero(intrace->listener.icmp_trace,
sizeof(intrace->listener.icmp_trace));
bzero(intrace->listener.icmp_trace6,
sizeof(intrace->listener.icmp_trace6));
display_clr();
}
}
/* UnLock mutex */
while (pthread_mutex_unlock(&intrace->mutex)) ;
usleep(200000);
}
return errNone;
}
