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fix: ensure DNS query name reset in plugin.NS error path (#7142)

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Signed-off-by: hansedong <skipiper1314@gmail.com>
Co-authored-by: hansedong <skipiper1314@gmail.com>
This commit is contained in:
skipper
2025-05-22 21:37:55 +08:00
committed by GitHub
parent 82323554ae
commit 528cc26a4c
2 changed files with 91 additions and 5 deletions
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10
plugin/backend_lookup.go
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@@ -429,20 +429,20 @@ func PTR(ctx context.Context, b ServiceBackend, zone string, state request.Reque
return records, nil
}
// NS returns NS records from the backend
// NS returns NS records from the backend
func NS(ctx context.Context, b ServiceBackend, zone string, state request.Request, opt Options) (records, extra []dns.RR, err error) {
// NS record for this zone live in a special place, ns.dns.<zone>. Fake our lookup.
// only a tad bit fishy...
// NS record for this zone lives in a special place, ns.dns.<zone>. Fake our lookup.
// Only a tad bit fishy...
old := state.QName()
state.Clear()
state.Req.Question[0].Name = dnsutil.Join("ns.dns.", zone)
services, err := b.Services(ctx, state, false, opt)
// reset the query name to the original
state.Req.Question[0].Name = old
if err != nil {
return nil, nil, err
}
// ... and reset
state.Req.Question[0].Name = old
seen := map[string]bool{}