corrige bug com registro txt e tradução

internal/dnsrecord/validator_test.go

@@ -18,6 +18,7 @@ func TestValidateRRSetAcceptsSupportedRecords(t *testing.T) {
 		{"SOA", "ns1.example.org. hostmaster.example.org. 2026010101 3600 600 604800 300"},
 		{"SRV", "10 20 443 service.example.org."},
 		{"TXT", `"v=spf1 -all"`},
+		{"TXT", `"v=DMARC1; p=reject; rua=mailto:postmaster@example.org; ruf=mailto:postmaster@example.org"`},
 	}
 
 	for _, tc := range cases {
@@ -56,6 +57,68 @@ func TestValidateRRSetRejectsInvalidRecords(t *testing.T) {
 	}
 }
 
+func TestValidateRRSetAcceptsUnderscoresInOwnerNames(t *testing.T) {
+	v := newTestValidator(t)
+
+	cases := []struct {
+		name       string
+		recordType string
+		content    string
+		wantName   string
+	}{
+		{
+			name:       "_dmarc.example.org",
+			recordType: "TXT",
+			content:    `"v=DMARC1; p=reject; rua=mailto:postmaster@example.org; ruf=mailto:postmaster@example.org"`,
+			wantName:   "_dmarc.example.org.",
+		},
+		{
+			name:       "_sip._tcp.example.org",
+			recordType: "SRV",
+			content:    "10 20 5060 sip.example.org.",
+			wantName:   "_sip._tcp.example.org.",
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			rrset, err := v.ValidateRRSet(tc.name, tc.recordType, 300, []string{tc.content})
+			if err != nil {
+				t.Fatalf("ValidateRRSet returned error: %v", err)
+			}
+			if rrset.Name != tc.wantName {
+				t.Fatalf("unexpected normalized name: %q", rrset.Name)
+			}
+			if rrset.Records[0].Content != tc.content {
+				t.Fatalf("unexpected content: %q", rrset.Records[0].Content)
+			}
+		})
+	}
+}
+
+func TestValidateRRSetRejectsUnderscoresInHostnameTargets(t *testing.T) {
+	v := newTestValidator(t)
+
+	cases := []struct {
+		recordType string
+		content    string
+	}{
+		{"CNAME", "_target.example.org."},
+		{"MX", "10 _mail.example.org."},
+		{"NS", "_ns.example.org."},
+		{"SOA", "_ns.example.org. hostmaster.example.org. 2026010101 3600 600 604800 300"},
+		{"SRV", "10 20 5060 _sip.example.org."},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.recordType, func(t *testing.T) {
+			if _, err := v.ValidateRRSet("www.example.org.", tc.recordType, 300, []string{tc.content}); err == nil {
+				t.Fatal("expected validation error")
+			}
+		})
+	}
+}
+
 func TestValidateRRSetRequiresTTL(t *testing.T) {
 	v := newTestValidator(t)