AdGuardHome/internal/aghnet/arpdb_windows.go
Ainar Garipov a9127c4a45 Pull request: upd-fmt
Merge in DNS/adguard-home from upd-fmt to master

Squashed commit of the following:

commit 73d9a71feccd8256841ae5a01e4a6aae0bcb2f65
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Aug 31 18:37:39 2022 +0300

    all: upd fmt
2022-08-31 18:57:02 +03:00

64 lines
1.1 KiB
Go

//go:build windows
// +build windows
package aghnet
import (
"bufio"
"net"
"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{}
if ip := net.ParseIP(fields[0]); ip == nil {
continue
} else {
n.IP = ip
}
if mac, err := net.ParseMAC(fields[1]); err != nil {
continue
} else {
n.MAC = mac
}
ns = append(ns, n)
}
return ns
}