[EC-598] feat: make fallback working again

apps/browser/src/services/fido2/browser-fido2-user-interface.service.ts

@@ -147,7 +147,9 @@ export class BrowserFido2UserInterfaceSession implements Fido2UserInterfaceSessi
       .subscribe((msg) => {
         if (msg.type === "AbortResponse") {
           this.close();
-          this.abortController.abort(UserRequestedFallbackAbortReason);
+          this.abortController.abort(
+            msg.fallbackRequested ? UserRequestedFallbackAbortReason : undefined
+          );
         }
       });
 

libs/common/src/webauthn/abstractions/fido2-client.service.abstraction.ts

@@ -79,14 +79,9 @@ export interface PublicKeyCredentialParam {
   type: "public-key";
 }
 
-export class Fido2Error extends Error {
+export class FallbackRequestedError extends Error {
-  constructor(message: string, readonly fallbackRequested = false) {
+  readonly fallbackRequested = true;
-    super(message);
+  constructor() {
-  }
+    super("FallbackRequested");
-}
-
-export class RequestAbortedError extends Fido2Error {
-  constructor(fallbackRequested = false) {
-    super("Fido2 request was aborted", fallbackRequested);
   }
 }

libs/common/src/webauthn/services/fido2-client.service.ts

@@ -14,8 +14,10 @@ import {
   AssertCredentialResult,
   CreateCredentialParams,
   CreateCredentialResult,
+  FallbackRequestedError,
   Fido2ClientService as Fido2ClientServiceAbstraction,
   PublicKeyCredentialParam,
+  UserRequestedFallbackAbortReason,
   UserVerification,
 } from "../abstractions/fido2-client.service.abstraction";
 import { Fido2Utils } from "../abstractions/fido2-utils";
@@ -116,12 +118,20 @@ export class Fido2ClientService implements Fido2ClientServiceAbstraction {
         abortController
       );
     } catch (error) {
+      if (
+        abortController.signal.aborted &&
+        abortController.signal.reason === UserRequestedFallbackAbortReason
+      ) {
+        throw new FallbackRequestedError();
+      }
+
       if (
         error instanceof Fido2AutenticatorError &&
         error.errorCode === Fido2AutenticatorErrorCode.InvalidState
       ) {
         throw new DOMException(undefined, "InvalidStateError");
       }
+
       throw new DOMException(undefined, "NotAllowedError");
     }
 
@@ -198,6 +208,13 @@ export class Fido2ClientService implements Fido2ClientServiceAbstraction {
         abortController
       );
     } catch (error) {
+      if (
+        abortController.signal.aborted &&
+        abortController.signal.reason === UserRequestedFallbackAbortReason
+      ) {
+        throw new FallbackRequestedError();
+      }
+
       if (
         error instanceof Fido2AutenticatorError &&
         error.errorCode === Fido2AutenticatorErrorCode.InvalidState