79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
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//go:build freebsd
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// +build freebsd
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package aghnet
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import (
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"bufio"
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"fmt"
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"io"
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"net"
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"os"
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"strings"
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"github.com/AdguardTeam/AdGuardHome/internal/aghio"
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"github.com/AdguardTeam/AdGuardHome/internal/aghos"
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"github.com/AdguardTeam/golibs/errors"
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)
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func canBindPrivilegedPorts() (can bool, err error) {
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return aghos.HaveAdminRights()
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}
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// maxCheckedFileSize is the maximum acceptable length of the /etc/rc.conf file.
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const maxCheckedFileSize = 1024 * 1024
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func ifaceHasStaticIP(ifaceName string) (ok bool, err error) {
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const filename = "/etc/rc.conf"
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var f *os.File
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f, err = os.Open(filename)
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if err != nil {
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return false, err
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}
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defer func() { err = errors.WithDeferred(err, f.Close()) }()
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var r io.Reader
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r, err = aghio.LimitReader(f, maxCheckedFileSize)
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if err != nil {
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return false, err
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}
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return rcConfStaticConfig(r, ifaceName)
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}
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// rcConfStaticConfig checks if the interface is configured by /etc/rc.conf to
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// have a static IP.
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func rcConfStaticConfig(r io.Reader, ifaceName string) (has bool, err error) {
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s := bufio.NewScanner(r)
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for ifaceLinePref := fmt.Sprintf("ifconfig_%s", ifaceName); s.Scan(); {
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line := strings.TrimSpace(s.Text())
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if !strings.HasPrefix(line, ifaceLinePref) {
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continue
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}
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eqIdx := len(ifaceLinePref)
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if line[eqIdx] != '=' {
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continue
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}
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fieldsStart, fieldsEnd := eqIdx+2, len(line)-1
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if fieldsStart >= fieldsEnd {
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continue
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}
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fields := strings.Fields(line[fieldsStart:fieldsEnd])
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if len(fields) >= 2 &&
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strings.ToLower(fields[0]) == "inet" &&
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net.ParseIP(fields[1]) != nil {
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return true, s.Err()
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}
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}
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return false, s.Err()
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}
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func ifaceSetStaticIP(string) (err error) {
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return aghos.Unsupported("setting static ip")
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}
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