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checker: add dname_coexistence rule and refactor sibling probing
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Extract querySiblings from observeCoexistence so both CNAME and DNAME
coexistence checks share the same parallel RRset scan. Add
observeDNAMECoexistence (called from Collect) that populates
AliasData.DNAMECoexistence for each DNAME node in DNAMESubstitutions.
Add the dname_coexistence rule (RFC 6672 §2.3) that flags any sibling
RRsets at a DNAME owner as CRIT, with matching tests.
This commit is contained in:
nemunaire 2026-05-16 21:35:53 +08:00
commit c5c13960d5
5 changed files with 112 additions and 12 deletions
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checker/types.go
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@ -70,6 +70,8 @@ type AliasData struct {
// Coexisting is populated only when Owner has a CNAME.
Coexisting []CoexistingRRset `json:"coexisting,omitempty"`
// DNAMECoexistence maps each DNAME owner (from DNAMESubstitutions) to its sibling RRsets.
DNAMECoexistence map[string][]CoexistingRRset `json:"dname_coexistence,omitempty"`
OwnerIsApex bool `json:"owner_is_apex,omitempty"`
OwnerHasCNAME bool `json:"owner_has_cname,omitempty"`