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checker: build owner FQDN from _domain subdomain label + apex
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nemunaire 2026-05-14 22:21:33 +08:00
commit 355f2b92eb
1 changed files with 11 additions and 8 deletions
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19
checker/collect.go
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@ -318,16 +318,19 @@ func defaultResolveHost(ctx context.Context, target string) (verdict, detail str
// ownerFQDN returns the record owner FQDN, preferring the service's _domain field over subdomain+apex. // ownerFQDN returns the record owner FQDN, preferring the service's _domain field over subdomain+apex.
func ownerFQDN(svcDomain, sub, apex string) string { func ownerFQDN(svcDomain, sub, apex string) string {
if svcDomain != "" { fallback := func() string {
return strings.TrimSuffix(svcDomain, ".") if apex == "" {
return sub
}
if sub == "" || sub == "@" {
return apex
}
return sub + "." + apex
} }
if apex == "" { if svcDomain == "" {
return sub return fallback()
} }
if sub == "" || sub == "@" { return preferRRName(svcDomain, fallback(), apex)
return apex
}
return sub + "." + apex
} }
// preferRRName returns the RR header Name as an FQDN when present. // preferRRName returns the RR header Name as an FQDN when present.