AdGuardHome/internal/aghnet/net_freebsd.go
Eugene Burkov c4a13b92d2 cherry-pick: 3157 excessive ptrs
Merge in DNS/adguard-home from 3157-excessive-ptrs to master

Updates #3157.

Squashed commit of the following:

commit 6803988240dca2f147bb80a5b3f78d7749d2fa14
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 14:50:01 2022 +0300

    aghnet: and again

commit 1a7f4d1dbc8fd4d3ae620349917526a75fa71b47
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 14:49:20 2022 +0300

    aghnet: docs again

commit d88da1fc7135f3cd03aff10b02d9957c8ffdfd30
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 14:47:36 2022 +0300

    aghnet: imp docs

commit c45dbc7800e882c6c4110aab640c32b03046f89a
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 14:41:19 2022 +0300

    aghnet: keep alphabetical order

commit b61781785d096ef43f60fb4f1905a4ed3cdf7c68
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 13:50:56 2022 +0300

    aghnet: imp code quality

commit 578dbd71ed2f2089c69343d7d4bf8bbc29150ace
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 12 17:02:38 2022 +0300

    aghnet: imp arp container
2022-06-02 17:05:18 +03:00

54 lines
1.2 KiB
Go

//go:build freebsd
// +build freebsd
package aghnet
import (
"bufio"
"fmt"
"io"
"net"
"strings"
"github.com/AdguardTeam/AdGuardHome/internal/aghos"
)
func ifaceHasStaticIP(ifaceName string) (ok bool, err error) {
const rcConfFilename = "etc/rc.conf"
walker := aghos.FileWalker(interfaceName(ifaceName).rcConfStaticConfig)
return walker.Walk(rootDirFS, rcConfFilename)
}
// rcConfStaticConfig checks if the interface is configured by /etc/rc.conf to
// have a static IP.
func (n interfaceName) rcConfStaticConfig(r io.Reader) (_ []string, cont bool, err error) {
s := bufio.NewScanner(r)
for pref := fmt.Sprintf("ifconfig_%s=", n); s.Scan(); {
line := strings.TrimSpace(s.Text())
if !strings.HasPrefix(line, pref) {
continue
}
cfgLeft, cfgRight := len(pref)+1, len(line)-1
if cfgLeft >= cfgRight {
continue
}
// TODO(e.burkov): Expand the check to cover possible
// configurations from man rc.conf(5).
fields := strings.Fields(line[cfgLeft:cfgRight])
if len(fields) >= 2 &&
strings.EqualFold(fields[0], "inet") &&
net.ParseIP(fields[1]) != nil {
return nil, false, s.Err()
}
}
return nil, true, s.Err()
}
func ifaceSetStaticIP(string) (err error) {
return aghos.Unsupported("setting static ip")
}