port Firestore Auth module in C++ (#733)

* Implement firestore/auth/user

* add user to project and some fixes

* implement firestore/auth/{credentials_provider,empty_credentials_provider}

* implement firestore/auth/firebase_credentials_provider

* refactoring firebase_credentials_provider and add (disabled but working) unit test

* add auth test to project

* address changes

* small fix to style and project

* fix the firebase_credentials_provider_test

* fix style

* address changes

* revert the change to static mutex_

* remove my custom plist path

* fix style

* address changes

* refactoring FirebaseCredentialsProvider to fix the issue w.r.t. auth global dispatch queue

* add /*force_refresh=*/ tag to bool literal for style purpose

* Use a shared_ptr/weak_ptr handoff on FirebaseCredentialsProvider (#778)

* Revert "refactoring FirebaseCredentialsProvider to fix the issue w.r.t. auth global dispatch queue"

This reverts commit 87175a4146267d403a774f138b85f8d3b532fa4b.

* Use a shared_ptr/weak_ptr handoff on FirebaseCredentialsProvider

This avoids any problems with callsbacks retaining pointers to objects
destroyed by a C++ destructor

1 files changed, 42 insertions, 0 deletions

diff --git a/Firestore/core/src/firebase/firestore/auth/empty_credentials_provider.cc b/Firestore/core/src/firebase/firestore/auth/empty_credentials_provider.cc
new file mode 100644
index 0000000..6ee7f61
--- /dev/null
+++ b/Firestore/core/src/firebase/firestore/auth/empty_credentials_provider.cc
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define UNUSED(x) (void)(x)
+
+#include "Firestore/core/src/firebase/firestore/auth/empty_credentials_provider.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+void EmptyCredentialsProvider::GetToken(bool force_refresh,
+                                        TokenListener completion) {
+  UNUSED(force_refresh);
+  if (completion) {
+    completion({"", User::Unauthenticated()}, "");
+  }
+}
+
+void EmptyCredentialsProvider::SetUserChangeListener(
+    UserChangeListener listener) {
+  if (listener) {
+    listener(User::Unauthenticated());
+  }
+}
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase