mirror of
https://github.com/AdguardTeam/AdGuardHome.git
synced 2024-11-28 18:08:51 +03:00
68 lines
1 KiB
Go
68 lines
1 KiB
Go
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//go:build openbsd
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// +build openbsd
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package aghnet
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import (
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"bufio"
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"net"
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"strings"
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"sync"
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"github.com/AdguardTeam/golibs/log"
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)
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func newARPDB() *cmdARPDB {
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return &cmdARPDB{
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runcmd: rcArpA,
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parse: parseArpA,
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ns: &neighs{
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mu: &sync.RWMutex{},
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ns: make([]Neighbor, 0),
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},
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}
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}
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// parseArpA parses the output of the "arp -a" command on OpenBSD. The expected
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// input format:
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//
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// Host Ethernet Address Netif Expire Flags
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// 192.168.1.1 ab:cd:ef:ab:cd:ef em0 19m59s
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//
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func parseArpA(sc *bufio.Scanner, lenHint int) (ns []Neighbor) {
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// Skip the header.
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if !sc.Scan() {
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return nil
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}
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ns = make([]Neighbor, 0, lenHint)
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for sc.Scan() {
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ln := sc.Text()
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fields := strings.Fields(ln)
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if len(fields) < 2 {
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continue
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}
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n := Neighbor{}
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if ip := net.ParseIP(fields[0]); ip == nil {
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continue
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} else {
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n.IP = ip
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}
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if mac, err := net.ParseMAC(fields[1]); err != nil {
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log.Debug("parsing arp output: %s", err)
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continue
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} else {
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n.MAC = mac
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}
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ns = append(ns, n)
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}
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return ns
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}
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