1 files changed, 138 insertions, 0 deletions
diff --git a/dom/webauthn/AndroidWebAuthnTokenManager.h b/dom/webauthn/AndroidWebAuthnTokenManager.h
new file mode 100644
index 0000000000..16a6215225
--- /dev/null
+++ b/dom/webauthn/AndroidWebAuthnTokenManager.h
@@ -0,0 +1,138 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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_AndroidWebAuthnTokenManager_h
+#define mozilla_dom_AndroidWebAuthnTokenManager_h
+
+#include "mozilla/dom/CryptoBuffer.h"
+#include "mozilla/dom/U2FTokenTransport.h"
+
+namespace mozilla {
+namespace dom {
+
+// Collected from
+// https://developers.google.com/android/reference/com/google/android/gms/fido/fido2/api/common/ErrorCode
+constexpr auto kSecurityError = u"SECURITY_ERR"_ns;
+constexpr auto kConstraintError = u"CONSTRAINT_ERR"_ns;
+constexpr auto kNotSupportedError = u"NOT_SUPPORTED_ERR"_ns;
+constexpr auto kInvalidStateError = u"INVALID_STATE_ERR"_ns;
+constexpr auto kNotAllowedError = u"NOT_ALLOWED_ERR"_ns;
+constexpr auto kAbortError = u"ABORT_ERR"_ns;
+constexpr auto kEncodingError = u"ENCODING_ERR"_ns;
+constexpr auto kDataError = u"DATA_ERR"_ns;
+constexpr auto kTimeoutError = u"TIMEOUT_ERR"_ns;
+constexpr auto kNetworkError = u"NETWORK_ERR"_ns;
+constexpr auto kUnknownError = u"UNKNOWN_ERR"_ns;
+
+class AndroidWebAuthnResult {
+ public:
+  explicit AndroidWebAuthnResult(const nsAString& aErrorCode)
+      : mErrorCode(aErrorCode) {}
+
+  explicit AndroidWebAuthnResult() {}
+
+  bool IsError() const { return NS_FAILED(GetError()); }
+
+  nsresult GetError() const {
+    if (mErrorCode.IsEmpty()) {
+      return NS_OK;
+    } else if (mErrorCode.Equals(kSecurityError)) {
+      return NS_ERROR_DOM_SECURITY_ERR;
+    } else if (mErrorCode.Equals(kConstraintError)) {
+      // TODO: The message is right, but it's not about indexeddb.
+      // See https://heycam.github.io/webidl/#constrainterror
+      return NS_ERROR_DOM_INDEXEDDB_CONSTRAINT_ERR;
+    } else if (mErrorCode.Equals(kNotSupportedError)) {
+      return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
+    } else if (mErrorCode.Equals(kInvalidStateError)) {
+      return NS_ERROR_DOM_INVALID_STATE_ERR;
+    } else if (mErrorCode.Equals(kNotAllowedError)) {
+      return NS_ERROR_DOM_NOT_ALLOWED_ERR;
+    } else if (mErrorCode.Equals(kEncodingError)) {
+      return NS_ERROR_DOM_ENCODING_NOT_SUPPORTED_ERR;
+    } else if (mErrorCode.Equals(kDataError)) {
+      return NS_ERROR_DOM_DATA_ERR;
+    } else if (mErrorCode.Equals(kTimeoutError)) {
+      return NS_ERROR_DOM_TIMEOUT_ERR;
+    } else if (mErrorCode.Equals(kNetworkError)) {
+      return NS_ERROR_DOM_NETWORK_ERR;
+    } else if (mErrorCode.Equals(kAbortError)) {
+      return NS_ERROR_DOM_ABORT_ERR;
+    } else if (mErrorCode.Equals(kUnknownError)) {
+      return NS_ERROR_DOM_UNKNOWN_ERR;
+    } else {
+      __android_log_print(ANDROID_LOG_ERROR, "Gecko",
+                          "RegisterAbort unknown code: %s",
+                          NS_ConvertUTF16toUTF8(mErrorCode).get());
+      return NS_ERROR_DOM_UNKNOWN_ERR;
+    }
+  }
+
+  AndroidWebAuthnResult(const AndroidWebAuthnResult& aOther)
+      : mAttObj(aOther.mAttObj.InfallibleClone()),
+        mKeyHandle(aOther.mKeyHandle.InfallibleClone()),
+        mClientDataJSON(aOther.mClientDataJSON),
+        mAuthData(aOther.mAuthData.InfallibleClone()),
+        mSignature(aOther.mSignature.InfallibleClone()),
+        mUserHandle(aOther.mUserHandle.InfallibleClone()),
+        mErrorCode(aOther.mErrorCode) {}
+
+  // Attestation-only
+  CryptoBuffer mAttObj;
+
+  // Attestations and assertions
+  CryptoBuffer mKeyHandle;
+  nsCString mClientDataJSON;
+
+  // Assertions-only
+  CryptoBuffer mAuthData;
+  CryptoBuffer mSignature;
+  CryptoBuffer mUserHandle;
+
+ private:
+  const nsString mErrorCode;
+};
+
+/*
+ * WebAuthnAndroidTokenManager is a token implementation communicating with
+ * Android Fido2 APIs.
+ */
+class AndroidWebAuthnTokenManager final : public U2FTokenTransport {
+ public:
+  explicit AndroidWebAuthnTokenManager();
+  ~AndroidWebAuthnTokenManager() {}
+
+  RefPtr<U2FRegisterPromise> Register(const WebAuthnMakeCredentialInfo& aInfo,
+                                      bool aForceNoneAttestation) override;
+
+  RefPtr<U2FSignPromise> Sign(const WebAuthnGetAssertionInfo& aInfo) override;
+
+  void Cancel() override;
+
+  void Drop() override;
+
+  void HandleRegisterResult(const AndroidWebAuthnResult& aResult);
+
+  void HandleSignResult(const AndroidWebAuthnResult& aResult);
+
+  static AndroidWebAuthnTokenManager* GetInstance();
+
+ private:
+  void ClearPromises() {
+    mRegisterPromise.RejectIfExists(NS_ERROR_DOM_UNKNOWN_ERR, __func__);
+    mSignPromise.RejectIfExists(NS_ERROR_DOM_UNKNOWN_ERR, __func__);
+  }
+
+  void AssertIsOnOwningThread() const;
+
+  MozPromiseHolder<U2FRegisterPromise> mRegisterPromise;
+  MozPromiseHolder<U2FSignPromise> mSignPromise;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_AndroidWebAuthnTokenManager_h