1 files changed, 87 insertions, 0 deletions
diff --git a/dom/webauthn/WebAuthnService.h b/dom/webauthn/WebAuthnService.h
new file mode 100644
index 0000000000..254b75d251
--- /dev/null
+++ b/dom/webauthn/WebAuthnService.h
@@ -0,0 +1,87 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_WebAuthnService_h_
+#define mozilla_dom_WebAuthnService_h_
+
+#include "nsIWebAuthnService.h"
+#include "AuthrsBridge_ffi.h"
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "AndroidWebAuthnService.h"
+#endif
+
+#ifdef XP_MACOSX
+#  include "MacOSWebAuthnService.h"
+#endif
+
+#ifdef XP_WIN
+#  include "WinWebAuthnService.h"
+#endif
+
+namespace mozilla::dom {
+
+already_AddRefed<nsIWebAuthnService> NewWebAuthnService();
+
+class WebAuthnService final : public nsIWebAuthnService {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIWEBAUTHNSERVICE
+
+  WebAuthnService()
+      : mTransactionState(Nothing(), "WebAuthnService::mTransactionState") {
+    Unused << authrs_service_constructor(getter_AddRefs(mAuthrsService));
+#if defined(XP_WIN)
+    if (WinWebAuthnService::AreWebAuthNApisAvailable()) {
+      mPlatformService = new WinWebAuthnService();
+    } else {
+      mPlatformService = mAuthrsService;
+    }
+#elif defined(MOZ_WIDGET_ANDROID)
+    mPlatformService = new AndroidWebAuthnService();
+#elif defined(XP_MACOSX)
+    if (__builtin_available(macos 13.3, *)) {
+      mPlatformService = NewMacOSWebAuthnServiceIfAvailable();
+    }
+    if (!mPlatformService) {
+      mPlatformService = mAuthrsService;
+    }
+#else
+    mPlatformService = mAuthrsService;
+#endif
+  }
+
+ private:
+  ~WebAuthnService() = default;
+
+  nsIWebAuthnService* DefaultService() {
+    if (StaticPrefs::security_webauth_webauthn_enable_softtoken()) {
+      return mAuthrsService;
+    }
+    return mPlatformService;
+  }
+
+  nsIWebAuthnService* AuthrsService() { return mAuthrsService; }
+
+  nsIWebAuthnService* SelectedService() {
+    auto guard = mTransactionState.Lock();
+    if (guard->isSome()) {
+      return guard->ref().service;
+    }
+    return DefaultService();
+  }
+
+  struct TransactionState {
+    nsCOMPtr<nsIWebAuthnService> service;
+  };
+  using TransactionStateMutex = DataMutex<Maybe<TransactionState>>;
+  TransactionStateMutex mTransactionState;
+
+  nsCOMPtr<nsIWebAuthnService> mAuthrsService;
+  nsCOMPtr<nsIWebAuthnService> mPlatformService;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_WebAuthnService_h_