feat: add compatibility for fido2Credentials counter and implement no-op device token update handler

src/handlers/ciphers.ts

@@ -5,6 +5,31 @@ import { generateUUID } from '../utils/uuid';
 import { deleteAllAttachmentsForCipher } from './attachments';
 import { parsePagination, encodeContinuationToken } from '../utils/pagination';
 
+// Android 2026.2.0 expects fido2Credentials[].counter to be a string.
+export function normalizeCipherLoginForCompatibility(login: any): any {
+  if (!login || typeof login !== 'object') return login ?? null;
+
+  const fido2 = Array.isArray(login.fido2Credentials)
+    ? login.fido2Credentials.map((cred: any) => {
+        if (!cred || typeof cred !== 'object') return cred;
+        const rawCounter = cred.counter;
+        const counter =
+          rawCounter === null || rawCounter === undefined
+            ? '0'
+            : String(rawCounter);
+        return {
+          ...cred,
+          counter,
+        };
+      })
+    : login.fido2Credentials;
+
+  return {
+    ...login,
+    fido2Credentials: fido2,
+  };
+}
+
 // Format attachments for API response
 export function formatAttachments(attachments: Attachment[]): any[] | null {
   if (attachments.length === 0) return null;
@@ -27,6 +52,7 @@ export function formatAttachments(attachments: Attachment[]): any[] | null {
 export function cipherToResponse(cipher: Cipher, attachments: Attachment[] = []): CipherResponse {
   // Strip internal-only fields that must not appear in the API response
   const { userId, createdAt, updatedAt, deletedAt, ...passthrough } = cipher;
+  const normalizedLogin = normalizeCipherLoginForCompatibility((passthrough as any).login ?? null);
 
   return {
     // Pass through ALL stored cipher fields (known + unknown)
@@ -48,6 +74,7 @@ export function cipherToResponse(cipher: Cipher, attachments: Attachment[] = [])
     object: 'cipher',
     collectionIds: [],
     attachments: formatAttachments(attachments),
+    login: normalizedLogin,
     encryptedFor: null,
   };
 }
@@ -137,6 +164,7 @@ export async function handleCreateCipher(request: Request, env: Env, userId: str
     updatedAt: now,
     deletedAt: null,
   };
+  cipher.login = normalizeCipherLoginForCompatibility(cipher.login);
 
   await storage.saveCipher(cipher);
   await storage.updateRevisionDate(userId);
@@ -179,6 +207,7 @@ export async function handleUpdateCipher(request: Request, env: Env, userId: str
     updatedAt: new Date().toISOString(),
     deletedAt: existingCipher.deletedAt,
   };
+  cipher.login = normalizeCipherLoginForCompatibility(cipher.login);
 
   await storage.saveCipher(cipher);
   await storage.updateRevisionDate(userId);

src/handlers/devices.ts

@@ -40,3 +40,19 @@ export async function handleGetDevices(request: Request, env: Env, userId: strin
   });
 }
 
+// PUT /api/devices/identifier/{deviceIdentifier}/token
+// Bitwarden mobile reports push token updates to this endpoint.
+// NodeWarden does not implement push notifications, so accept and no-op.
+export async function handleUpdateDeviceToken(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  void env;
+  void userId;
+  void deviceIdentifier;
+  return new Response(null, { status: 200 });
+}
+

src/handlers/import.ts

@@ -3,6 +3,7 @@ import { StorageService } from '../services/storage';
 import { errorResponse } from '../utils/response';
 import { generateUUID } from '../utils/uuid';
 import { LIMITS } from '../config/limits';
+import { normalizeCipherLoginForCompatibility } from './ciphers';
 
 // Bitwarden client import request format
 interface CiphersImportRequest {
@@ -221,6 +222,7 @@ export async function handleCiphersImport(request: Request, env: Env, userId: st
       updatedAt: now,
       deletedAt: null,
     };
+    cipher.login = normalizeCipherLoginForCompatibility(cipher.login);
 
     cipherRows.push(cipher);
   }

src/router.ts

@@ -38,7 +38,7 @@ import { handleSync } from './handlers/sync';
 
 // Setup handlers
 import { handleSetupPage, handleSetupStatus, handleDisableSetup } from './handlers/setup';
-import { handleKnownDevice, handleGetDevices } from './handlers/devices';
+import { handleKnownDevice, handleGetDevices, handleUpdateDeviceToken } from './handlers/devices';
 
 // Import handler
 import { handleCiphersImport } from './handlers/import';
@@ -547,6 +547,13 @@ export async function handleRequest(request: Request, env: Env): Promise<Respons
       return handleGetDevices(request, env, userId);
     }
 
+    // Device push token endpoint (no-op compatibility handler)
+    const deviceTokenMatch = path.match(/^\/api\/devices\/identifier\/([^/]+)\/token$/i);
+    if (deviceTokenMatch && (method === 'PUT' || method === 'POST')) {
+      const deviceIdentifier = decodeURIComponent(deviceTokenMatch[1]);
+      return handleUpdateDeviceToken(request, env, userId, deviceIdentifier);
+    }
+
     // Not found
     return errorResponse('Not found', 404);