fix(dns): разрешить вложенный wildcard в имени DNS-записи

Co-authored-by: Cursor <[email protected]>

packages/shared/test/validators.test.ts

@@ -0,0 +1,41 @@
+import { describe, expect, it } from "vitest";
+import { validateDnsRecord, ValidationError } from "../src/validators.js";
+
+function assertValidName(name: string): void {
+  expect(() =>
+    validateDnsRecord("A", name, "1.2.3.4", 1, false),
+  ).not.toThrow();
+}
+
+function assertInvalidName(name: string): void {
+  expect(() => validateDnsRecord("A", name, "1.2.3.4", 1, false)).toThrow(
+    ValidationError,
+  );
+  expect(() => validateDnsRecord("A", name, "1.2.3.4", 1, false)).toThrow(
+    `invalid record name: ${name}`,
+  );
+}
+
+describe("validateDnsRecord name", () => {
+  it("accepts apex and zone wildcard", () => {
+    assertValidName("@");
+    assertValidName("*");
+  });
+
+  it("accepts regular labels and FQDN", () => {
+    assertValidName("ndns");
+    assertValidName("ndns.shnt.top");
+  });
+
+  it("accepts nested wildcard relative name and FQDN", () => {
+    assertValidName("*.ndns");
+    assertValidName("*.ndns.shnt.top");
+    assertValidName("*.mdns");
+    assertValidName("*.mdns.rkns.top");
+  });
+
+  it("rejects wildcard not as leftmost label", () => {
+    assertInvalidName("foo.*.bar");
+    assertInvalidName("ndns.*");
+  });
+});