//go:build windows package aghnet import ( "bufio" "net" "net/netip" "strings" "sync" ) func newARPDB() (arp *cmdARPDB) { return &cmdARPDB{ parse: parseArpA, ns: &neighs{ mu: &sync.RWMutex{}, ns: make([]Neighbor, 0), }, cmd: "arp", args: []string{"/a"}, } } // parseArpA parses the output of the "arp /a" command on Windows. The expected // input format (the first line is empty): // // Interface: 192.168.56.16 --- 0x7 // Internet Address Physical Address Type // 192.168.56.1 0a-00-27-00-00-00 dynamic // 192.168.56.255 ff-ff-ff-ff-ff-ff static func parseArpA(sc *bufio.Scanner, lenHint int) (ns []Neighbor) { ns = make([]Neighbor, 0, lenHint) for sc.Scan() { ln := sc.Text() if ln == "" { continue } fields := strings.Fields(ln) if len(fields) != 3 { continue } n := Neighbor{} ip, err := netip.ParseAddr(fields[0]) if err != nil { continue } else { n.IP = ip } mac, err := net.ParseMAC(fields[1]) if err != nil { continue } else { n.MAC = mac } ns = append(ns, n) } return ns }