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cmd/cli: do not save static DNS when ctrld is already installed

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If ctrld was installed, the DNS setting was changed, we could not
determine the dynamic or static settings before installing ctrld.
This commit is contained in:
Cuong Manh Le
2024-02-20 15:16:24 +07:00
committed by Cuong Manh Le
parent dabbf2037b
commit 906479a15c
2 changed files with 19 additions and 5 deletions
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cmd/cli/prog.go
+4 -3
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@@ -5,6 +5,7 @@ import (
"context"
"errors"
"fmt"
"io/fs"
"math/rand"
"net"
"net/netip"
@@ -729,13 +730,13 @@ func saveCurrentStaticDNS(iface *net.Interface) error {
return nil
}
file := savedStaticDnsSettingsFilePath(iface)
if err := os.Remove(file); err != nil && !errors.Is(err, os.ErrNotExist) {
mainLog.Load().Warn().Err(err).Msg("could not remove old static DNS settings file")
}
ns, _ := currentStaticDNS(iface)
if len(ns) == 0 {
return nil
}
if err := os.Remove(file); err != nil && !errors.Is(err, fs.ErrNotExist) {
mainLog.Load().Warn().Err(err).Msg("could not remove old static DNS settings file")
}
mainLog.Load().Debug().Msgf("DNS settings for %s is static, saving ...", iface.Name)
if err := os.WriteFile(file, []byte(strings.Join(ns, ",")), 0600); err != nil {
mainLog.Load().Err(err).Msgf("could not save DNS settings for iface: %s", iface.Name)