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fix: using ttl counters for hosts making host discovery way more stable

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This commit is contained in:
evilsocket 2018-01-15 17:59:43 +01:00
commit 883f200e85
1 changed files with 9 additions and 2 deletions
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11
session/targets.go
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@ -11,6 +11,7 @@ type Targets struct {
Interface *net.Endpoint
Gateway *net.Endpoint
Targets map[string]*net.Endpoint
TTL map[string]uint
lock sync.Mutex
}
@ -20,6 +21,7 @@ func NewTargets(s *Session, iface, gateway *net.Endpoint) *Targets {
Interface: iface,
Gateway: gateway,
Targets: make(map[string]*net.Endpoint),
TTL: make(map[string]uint),
}
}
@ -36,8 +38,12 @@ func (tp *Targets) Remove(ip, mac string) {
defer tp.lock.Unlock()
if e, found := tp.Targets[mac]; found {
tp.Session.Events.Add("target.lost", e)
delete(tp.Targets, mac)
tp.TTL[mac]--
if tp.TTL[mac] == 0 {
tp.Session.Events.Add("target.lost", e)
delete(tp.Targets, mac)
delete(tp.TTL, mac)
}
return
}
}
@ -77,6 +83,7 @@ func (tp *Targets) AddIfNotExist(ip, mac string) *net.Endpoint {
}
tp.Targets[mac] = e
tp.TTL[mac] = 2
tp.Session.Events.Add("target.new", e)