dom/webauthn/WebAuthnService.h

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #ifndef mozilla_dom_WebAuthnService_h_
   6 #define mozilla_dom_WebAuthnService_h_
   7
   8 #include "nsIWebAuthnService.h"
   9 #include "AuthrsBridge_ffi.h"
  10
  11 #ifdef MOZ_WIDGET_ANDROID
  12 #  include "AndroidWebAuthnService.h"
  13 #endif
  14
  15 #ifdef XP_MACOSX
  16 #  include "MacOSWebAuthnService.h"
  17 #endif
  18
  19 #ifdef XP_WIN
  20 #  include "WinWebAuthnService.h"
  21 #endif
  22
  23 namespace mozilla::dom {
  24
  25 already_AddRefed<nsIWebAuthnService> NewWebAuthnService();
  26
  27 class WebAuthnService final : public nsIWebAuthnService {
  28  public:
  29   NS_DECL_THREADSAFE_ISUPPORTS
  30   NS_DECL_NSIWEBAUTHNSERVICE
  31
  32   WebAuthnService()
  33       : mTransactionState(Nothing(), "WebAuthnService::mTransactionState") {
  34     Unused << authrs_service_constructor(getter_AddRefs(mAuthrsService));
  35 #if defined(XP_WIN)
  36     if (WinWebAuthnService::AreWebAuthNApisAvailable()) {
  37       mPlatformService = new WinWebAuthnService();
  38     } else {
  39       mPlatformService = mAuthrsService;
  40     }
  41 #elif defined(MOZ_WIDGET_ANDROID)
  42     mPlatformService = new AndroidWebAuthnService();
  43 #elif defined(XP_MACOSX)
  44     if (__builtin_available(macos 13.3, *)) {
  45       mPlatformService = NewMacOSWebAuthnServiceIfAvailable();
  46     }
  47     if (!mPlatformService) {
  48       mPlatformService = mAuthrsService;
  49     }
  50 #else
  51     mPlatformService = mAuthrsService;
  52 #endif
  53   }
  54
  55  private:
  56   ~WebAuthnService() = default;
  57
  58   nsIWebAuthnService* DefaultService() {
  59     if (StaticPrefs::security_webauth_webauthn_enable_softtoken()) {
  60       return mAuthrsService;
  61     }
  62     return mPlatformService;
  63   }
  64
  65   nsIWebAuthnService* AuthrsService() { return mAuthrsService; }
  66
  67   nsIWebAuthnService* SelectedService() {
  68     auto guard = mTransactionState.Lock();
  69     if (guard->isSome()) {
  70       return guard->ref().service;
  71     }
  72     return DefaultService();
  73   }
  74
  75   struct TransactionState {
  76     nsCOMPtr<nsIWebAuthnService> service;
  77   };
  78   using TransactionStateMutex = DataMutex<Maybe<TransactionState>>;
  79   TransactionStateMutex mTransactionState;
  80
  81   nsCOMPtr<nsIWebAuthnService> mAuthrsService;
  82   nsCOMPtr<nsIWebAuthnService> mPlatformService;
  83 };
  84
  85 }  // namespace mozilla::dom
  86
  87 #endif  // mozilla_dom_WebAuthnService_h_