Modify the TelecomLoaderService to provide LocalServices to Telecom

We need access to the DeviceIdleController, which is not currently
accessible via the PowerWhitelistManager due to restrictions with
components in the same SYSTEM process accessing public APIs (see
context#enforceCallingPermission).

To get around this, we need to wrap services only available as
LocalServices using Binder to pass these services to the Telecom
code. This is all in-process (no IPC allowed), so there should be
little to no impact.

Bug: 160724034
Test: miss call and verify `adb shell cmd deviceidle tempwhitelist` contains
default dialer.
Test: atest TelecomUnitTests; atest CtsTelecomTestCases

Change-Id: I6275b550d19743e576b93f5fcd2bd3aa9ea4e1a8

3 files changed, 81 insertions, 0 deletions

diff --git a/telecomm/java/com/android/internal/telecom/IDeviceIdleControllerAdapter.aidl b/telecomm/java/com/android/internal/telecom/IDeviceIdleControllerAdapter.aidl
new file mode 100644
index 000000000000..50bbf4c41284
--- /dev/null
+++ b/telecomm/java/com/android/internal/telecom/IDeviceIdleControllerAdapter.aidl
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package com.android.internal.telecom;
+
+/*
+ * Adapter interface for using DeviceIdleController, since the PowerWhitelistManager is not
+ * directly accessible in the SYSTEM process.
+ */
+interface IDeviceIdleControllerAdapter {
+    void exemptAppTemporarilyForEvent(String packageName, long duration, int userHandle,
+            String reason);
+}
\ No newline at end of file
diff --git a/telecomm/java/com/android/internal/telecom/IInternalServiceRetriever.aidl b/telecomm/java/com/android/internal/telecom/IInternalServiceRetriever.aidl
new file mode 100644
index 000000000000..b56010696361
--- /dev/null
+++ b/telecomm/java/com/android/internal/telecom/IInternalServiceRetriever.aidl
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package com.android.internal.telecom;
+
+import com.android.internal.telecom.IDeviceIdleControllerAdapter;
+
+/*
+ * Interface used to retrieve services that are only accessible via LocalService in the SYSTEM
+ * process.
+ */
+interface IInternalServiceRetriever {
+    IDeviceIdleControllerAdapter getDeviceIdleController();
+}
diff --git a/telecomm/java/com/android/internal/telecom/ITelecomLoader.aidl b/telecomm/java/com/android/internal/telecom/ITelecomLoader.aidl
new file mode 100644
index 000000000000..eda0f5b24958
--- /dev/null
+++ b/telecomm/java/com/android/internal/telecom/ITelecomLoader.aidl
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package com.android.internal.telecom;
+
+import com.android.internal.telecom.ITelecomService;
+import com.android.internal.telecom.IInternalServiceRetriever;
+
+/*
+ * Internal interface for getting an instance of the ITelecomService for external publication.
+ * Allows the TelecomLoaderService to pass additional dependencies required for creation.
+ */
+interface ITelecomLoader {
+    ITelecomService createTelecomService(IInternalServiceRetriever retriever);
+}