fix(vpn): harden VPN route access and wireguard client configuration handling

test/test.vpn-runtime.node.ts

@@ -1,6 +1,7 @@
 import { expect, tap } from '@git.zone/tstest/tapbundle';
 import { DcRouter } from '../ts/classes.dcrouter.js';
 import { VpnManager } from '../ts/vpn/classes.vpn-manager.js';
+import { RouteConfigManager } from '../ts/config/classes.route-config-manager.js';
 
 tap.test('VpnManager downgrades back to socket mode when no host-IP clients remain', async () => {
   const manager = new VpnManager({ forwardingMode: 'socket' });
@@ -107,4 +108,70 @@ tap.test('DcRouter.updateVpnConfig swaps the runtime VPN resolver and restarts V
   expect(dcRouter.vpnManager).toBeUndefined();
 });
 
+tap.test('RouteConfigManager makes vpnOnly routes fail closed without VPN clients', async () => {
+  const manager = new RouteConfigManager(() => undefined);
+  const route = {
+    name: 'private-route',
+    vpnOnly: true,
+    match: { domains: ['private.example.com'] },
+    action: { type: 'forward', targets: [{ host: '127.0.0.1', port: 8080 }] },
+    security: { ipAllowList: ['*'] },
+  } as any;
+
+  const prepared = (manager as any).injectVpnSecurity(route);
+
+  expect(prepared.security.ipAllowList).toEqual([]);
+  expect(prepared.security.ipBlockList).toContain('*');
+});
+
+tap.test('RouteConfigManager replaces public allow lists for vpnOnly routes', async () => {
+  const manager = new RouteConfigManager(
+    () => undefined,
+    undefined,
+    () => ['10.8.0.2'],
+  );
+  const route = {
+    name: 'private-route',
+    vpnOnly: true,
+    match: { domains: ['private.example.com'] },
+    action: { type: 'forward', targets: [{ host: '127.0.0.1', port: 8080 }] },
+    security: {
+      ipAllowList: ['*', '203.0.113.10'],
+      ipBlockList: ['198.51.100.5'],
+    },
+  } as any;
+
+  const prepared = (manager as any).injectVpnSecurity(route);
+
+  expect(prepared.security.ipAllowList).toEqual(['10.8.0.2']);
+  expect(prepared.security.ipBlockList).toEqual(['198.51.100.5']);
+});
+
+tap.test('VpnManager rewrites WireGuard AllowedIPs after key rotation', async () => {
+  const manager = new VpnManager({
+    serverEndpoint: 'vpn.example.com',
+    getClientAllowedIPs: async () => ['10.8.0.0/24', '203.0.113.10/32'],
+  });
+
+  (manager as any).vpnServer = {
+    rotateClientKey: async () => ({
+      entry: {
+        clientId: 'client-1',
+        publicKey: 'noise-public-key',
+        wgPublicKey: 'wg-public-key',
+      },
+      wireguardConfig: '[Interface]\nPrivateKey = old\nAddress = 10.8.0.2/24\n[Peer]\nAllowedIPs = 0.0.0.0/0\nEndpoint = vpn.example.com:51820\n',
+      secrets: { noisePrivateKey: 'noise-private-key', wgPrivateKey: 'wg-private-key' },
+    }),
+  };
+  (manager as any).clients = new Map([
+    ['client-1', { clientId: 'client-1', targetProfileIds: ['profile-1'] }],
+  ]);
+  (manager as any).persistClient = async () => {};
+
+  const bundle = await manager.rotateClientKey('client-1');
+
+  expect(bundle.wireguardConfig).toContain('AllowedIPs = 10.8.0.0/24, 203.0.113.10/32');
+});
+
 export default tap.start()