yeah i should have done this before, i know

net/endpoint.go

@@ -0,0 +1,82 @@
+package net
+
+import (
+	"encoding/binary"
+	"fmt"
+	"net"
+
+	"github.com/evilsocket/bettercap/core"
+)
+
+type Endpoint struct {
+	IP              net.IP
+	HW              net.HardwareAddr
+	IpAddress       string
+	SubnetBits      uint32
+	IpAddressUint32 uint32
+	HwAddress       string
+	Hostname        string
+	Vendor          string
+}
+
+type OnHostResolvedAction func(e *Endpoint)
+
+func NewEndpointNoResolve(ip, mac, name string, bits uint32) *Endpoint {
+	hw, err := net.ParseMAC(mac)
+	if err != nil {
+		panic(err)
+	}
+
+	e := &Endpoint{
+		IP:              net.ParseIP(ip),
+		HW:              hw,
+		IpAddress:       ip,
+		SubnetBits:      bits,
+		IpAddressUint32: binary.BigEndian.Uint32(net.ParseIP(ip)[12:16]),
+		HwAddress:       mac,
+		Hostname:        name,
+		Vendor:          OuiLookup(mac),
+	}
+
+	return e
+}
+
+func NewEndpoint(ip, mac string) *Endpoint {
+	e := NewEndpointNoResolve(ip, mac, "", 0)
+
+	// start resolver goroutine
+	go func() {
+		if names, err := net.LookupAddr(e.IpAddress); err == nil {
+			e.Hostname = names[0]
+			log.Debugf("Endpoint %s is now known as %s\n", e.IpAddress, core.Green(e.Hostname))
+		}
+	}()
+
+	return e
+}
+
+func (t *Endpoint) Name() string {
+	return t.Hostname
+}
+
+func (t *Endpoint) CIDR() string {
+	shift := 32 - t.SubnetBits
+	address := t.IpAddressUint32
+	ip := make(net.IP, 4)
+
+	binary.BigEndian.PutUint32(ip, (address>>shift)<<shift)
+
+	return fmt.Sprintf("%s/%d", ip.String(), t.SubnetBits)
+}
+
+func (t *Endpoint) String() string {
+	if t.HwAddress == "" {
+		return t.IpAddress
+	} else if t.Vendor == "" {
+		return fmt.Sprintf("%s : %s", t.IpAddress, t.HwAddress)
+	} else if t.Hostname == "" {
+		return fmt.Sprintf("%s : %s ( %s )", t.IpAddress, t.HwAddress, t.Vendor)
+	} else {
+		return fmt.Sprintf("%s : %s ( %s ) - "+core.BOLD+t.Hostname+core.RESET, t.IpAddress, t.HwAddress, t.Vendor)
+	}
+}