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merge from nmap-exp/ejlbell -r4734:4735 Eddie small udp hop guessing fix

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fyodor
2007-05-22 07:59:27 +00:00
parent 80d961be41
commit b28da59dcb
1 changed files with 5 additions and 3 deletions
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8
traceroute.cc
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@@ -455,7 +455,7 @@ Traceroute::readTraceResponses () {
case ICMP_PKT_FILTERED:
if (tp->probeType () == PROBE_TTL) {
tg->setHopDistance (o.ttl - ip2->ip_ttl, 0);
tg->start_ttl = tg->ttl = --tg->hopDistance;
tg->start_ttl = tg->ttl = tg->hopDistance;
} else {
tg->gotReply = true;
if (tg->start_ttl < tg->ttl)
@@ -468,7 +468,7 @@ Traceroute::readTraceResponses () {
icmp->icmp_type == ICMP_ADDRESSREPLY || icmp->icmp_type == ICMP_TIMESTAMPREPLY)) {
if (tp->probeType () == PROBE_TTL) {
tg->setHopDistance (get_initial_ttl_guess (ip->ip_ttl), ip->ip_ttl);
tg->start_ttl = tg->ttl = --tg->hopDistance;
tg->start_ttl = tg->ttl = tg->hopDistance;
} else {
tg->gotReply = true;
if (tg->start_ttl < tg->ttl)
@@ -1314,8 +1314,10 @@ TraceGroup::setHopDistance (u8 hop_distance, u8 ttl) {
if (this->hopDistance && ttl)
this->hopDistance -= ttl;
else
else if(!this->hopDistance && ttl)
this->hopDistance = ttl;
else
this->hopDistance = hop_distance;
/* guess is too big */
if (this->hopDistance >= MAX_TTL)