Credential Manager: Reject credential request if an outstanding request is pending.

components/password_manager/content/renderer/credential_manager_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/password_manager/content/renderer/credential_manager_client.h"
 
 #include "components/password_manager/content/common/credential_manager_messages.h"
 #include "components/password_manager/content/common/credential_manager_types.h"
 #include "content/public/renderer/render_view.h"
 #include "third_party/WebKit/public/platform/WebCredential.h"
@@ skipping 38 matching lines @@
 bool CredentialManagerClient::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(CredentialManagerClient, message)
     IPC_MESSAGE_HANDLER(CredentialManagerMsg_AcknowledgeFailedSignIn,
                         OnAcknowledgeFailedSignIn)
     IPC_MESSAGE_HANDLER(CredentialManagerMsg_AcknowledgeSignedIn,
                         OnAcknowledgeSignedIn)
     IPC_MESSAGE_HANDLER(CredentialManagerMsg_AcknowledgeSignedOut,
                         OnAcknowledgeSignedOut)
     IPC_MESSAGE_HANDLER(CredentialManagerMsg_SendCredential, OnSendCredential)
+    IPC_MESSAGE_HANDLER(CredentialManagerMsg_RejectCredentialRequest,
+                        OnRejectCredentialRequest)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void CredentialManagerClient::OnAcknowledgeFailedSignIn(int request_id) {
   RespondToNotificationCallback(request_id, &failed_sign_in_callbacks_);
 }
 
 void CredentialManagerClient::OnAcknowledgeSignedIn(int request_id) {
   RespondToNotificationCallback(request_id, &signed_in_callbacks_);
 }
 
 void CredentialManagerClient::OnAcknowledgeSignedOut(int request_id) {
   RespondToNotificationCallback(request_id, &signed_out_callbacks_);
 }
 
 void CredentialManagerClient::OnSendCredential(int request_id,
                                                const CredentialInfo& info) {
   RequestCallbacks* callbacks = request_callbacks_.Lookup(request_id);
   DCHECK(callbacks);
   // TODO(mkwst): Split into local/federated credentials.
   blink::WebCredential credential(info.id, info.name, info.avatar);
   callbacks->onSuccess(&credential);
   request_callbacks_.Remove(request_id);
 }
 
+void CredentialManagerClient::OnRejectCredentialRequest(int request_id) {
+  RequestCallbacks* callbacks = request_callbacks_.Lookup(request_id);
+  DCHECK(callbacks);
+  // We don't expose an internal failure to the page directly; model it as
+  // though no credentials were available.
+  callbacks->onSuccess(nullptr);
+  request_callbacks_.Remove(request_id);
+}
+
 // -----------------------------------------------------------------------------
 // Dispatch messages from the renderer to the browser.
 
 void CredentialManagerClient::dispatchFailedSignIn(
     const blink::WebCredential& credential,
     blink::WebCredentialManagerClient::NotificationCallbacks* callbacks) {
   int request_id = failed_sign_in_callbacks_.Add(callbacks);
   CredentialInfo info(
       credential.id(), credential.name(), credential.avatarURL());
   Send(new CredentialManagerHostMsg_NotifyFailedSignIn(
@@ skipping 32 matching lines @@
     int request_id,
     CredentialManagerClient::NotificationCallbacksMap* map) {
   blink::WebCredentialManagerClient::NotificationCallbacks* callbacks =
       map->Lookup(request_id);
   DCHECK(callbacks);
   callbacks->onSuccess();
   map->Remove(request_id);
 }
 
 }  // namespace password_manager