feat(dns): add record accessors

pkg/dns/nsec.go

@@ -16,6 +16,26 @@ type NSECRecord struct {
 	TTL        int
 }
 
+// GetName returns the owner name.
+func (r NSECRecord) GetName() string {
+	return r.Name
+}
+
+// GetNextDomain returns the canonical successor name.
+func (r NSECRecord) GetNextDomain() string {
+	return r.NextDomain
+}
+
+// GetTypeBitmap returns a copy of the NSEC type bitmap.
+func (r NSECRecord) GetTypeBitmap() []byte {
+	return append([]byte(nil), r.TypeBitmap...)
+}
+
+// GetTTL returns the record TTL.
+func (r NSECRecord) GetTTL() int {
+	return r.TTL
+}
+
 // Create constructs a reference NSEC record container.
 //
 //	name := Create(".", NextName("."), TYPE_MAP_ROOT)

pkg/dns/nsec_test.go

@@ -33,10 +33,32 @@ func TestNSECRecordHelpers(t *testing.T) {
 		t.Fatalf("Create bitmap = %x, want %x", rr.TypeBitmap, bitmap)
 	}
 
+	if rr.GetName() != rr.Name {
+		t.Fatalf("GetName() = %q, want %q", rr.GetName(), rr.Name)
+	}
+
+	if rr.GetNextDomain() != rr.NextDomain {
+		t.Fatalf("GetNextDomain() = %q, want %q", rr.GetNextDomain(), rr.NextDomain)
+	}
+
+	if rr.GetTTL() != rr.TTL {
+		t.Fatalf("GetTTL() = %d, want %d", rr.GetTTL(), rr.TTL)
+	}
+
+	if !bytes.Equal(rr.GetTypeBitmap(), rr.TypeBitmap) {
+		t.Fatalf("GetTypeBitmap() = %x, want %x", rr.GetTypeBitmap(), rr.TypeBitmap)
+	}
+
 	bitmap[0] = 0xff
 	if rr.TypeBitmap[0] != 0x01 {
 		t.Fatal("Create should copy the type bitmap")
 	}
+
+	clone := rr.GetTypeBitmap()
+	clone[0] = 0xff
+	if rr.TypeBitmap[0] != 0x01 {
+		t.Fatal("GetTypeBitmap should return a copy")
+	}
 }
 
 func TestNextName(t *testing.T) {

pkg/dns/resource.go

@@ -30,6 +30,24 @@ type Resource struct {
 	Records []ResourceRecord
 }
 
+// GetTTL returns the resource TTL.
+func (r *Resource) GetTTL() int {
+	if r == nil {
+		return 0
+	}
+
+	return r.TTL
+}
+
+// GetRecords returns the resource records.
+func (r *Resource) GetRecords() []ResourceRecord {
+	if r == nil {
+		return nil
+	}
+
+	return r.Records
+}
+
 // ResourceJSON represents the JSON form of a DNS resource.
 type ResourceJSON struct {
 	Records []json.RawMessage `json:"records"`

pkg/dns/resource_test.go

@@ -248,6 +248,14 @@ func TestResourceTypeHelpers(t *testing.T) {
 	if !resource.HasDS() || !resource.GetHasDS() {
 		t.Fatal("HasDS should report DS records")
 	}
+
+	if got := resource.GetTTL(); got != DEFAULT_TTL {
+		t.Fatalf("GetTTL() = %d, want %d", got, DEFAULT_TTL)
+	}
+
+	if got := resource.GetRecords(); len(got) != len(resource.Records) {
+		t.Fatalf("GetRecords() = %d records, want %d", len(got), len(resource.Records))
+	}
 }
 
 func TestResourceRecordTypeAliases(t *testing.T) {