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

This commit is contained in:
evilsocket 2018-01-15 17:59:43 +01:00
commit 883f200e85

View file

@ -11,6 +11,7 @@ type Targets struct {
Interface *net.Endpoint Interface *net.Endpoint
Gateway *net.Endpoint Gateway *net.Endpoint
Targets map[string]*net.Endpoint Targets map[string]*net.Endpoint
TTL map[string]uint
lock sync.Mutex lock sync.Mutex
} }
@ -20,6 +21,7 @@ func NewTargets(s *Session, iface, gateway *net.Endpoint) *Targets {
Interface: iface, Interface: iface,
Gateway: gateway, Gateway: gateway,
Targets: make(map[string]*net.Endpoint), 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() defer tp.lock.Unlock()
if e, found := tp.Targets[mac]; found { if e, found := tp.Targets[mac]; found {
tp.TTL[mac]--
if tp.TTL[mac] == 0 {
tp.Session.Events.Add("target.lost", e) tp.Session.Events.Add("target.lost", e)
delete(tp.Targets, mac) delete(tp.Targets, mac)
delete(tp.TTL, mac)
}
return return
} }
} }
@ -77,6 +83,7 @@ func (tp *Targets) AddIfNotExist(ip, mac string) *net.Endpoint {
} }
tp.Targets[mac] = e tp.Targets[mac] = e
tp.TTL[mac] = 2
tp.Session.Events.Add("target.new", e) tp.Session.Events.Add("target.new", e)