Add AIDL connections for SipDelegateManager am: bf9c710733 am: 20734105de

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1462844

Change-Id: Ib01d1b59e6b73ae3c93e0c7dbe6c8cab421f2957

14 files changed, 559 insertions, 29 deletions

diff --git a/telephony/java/android/telephony/ImsManager.java b/telephony/java/android/telephony/ImsManager.java
index 13f407b14f01..42d7707c97d9 100644
--- a/telephony/java/android/telephony/ImsManager.java
+++ b/telephony/java/android/telephony/ImsManager.java
@@ -22,7 +22,12 @@ import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.content.Context;
+import android.telephony.BinderCacheManager;
 import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyFrameworkInitializer;
+import android.telephony.ims.aidl.IImsRcsController;
+
+import com.android.internal.telephony.ITelephony;
 
 /**
  * Provides access to information about Telephony IMS services on the device.
@@ -30,8 +35,6 @@ import android.telephony.SubscriptionManager;
 @SystemService(Context.TELEPHONY_IMS_SERVICE)
 public class ImsManager {
 
-    private Context mContext;
-
     /**
      * <p>Broadcast Action: Indicates that a previously allowed IMS operation was rejected by the
      * network due to the network returning a "forbidden" response. This may be due to a
@@ -87,6 +90,14 @@ public class ImsManager {
     public static final String EXTRA_WFC_REGISTRATION_FAILURE_MESSAGE =
             "android.telephony.ims.extra.WFC_REGISTRATION_FAILURE_MESSAGE";
 
+    // Cache Telephony Binder interfaces, one cache per process.
+    private static final BinderCacheManager<ITelephony> sTelephonyCache =
+            new BinderCacheManager<>(ImsManager::getITelephonyInterface);
+    private static final BinderCacheManager<IImsRcsController> sRcsCache =
+            new BinderCacheManager<>(ImsManager::getIImsRcsControllerInterface);
+
+    private final Context mContext;
+
     /**
      * Use {@link Context#getSystemService(String)} to get an instance of this class.
      * @hide
@@ -108,7 +119,7 @@ public class ImsManager {
             throw new IllegalArgumentException("Invalid subscription ID: " + subscriptionId);
         }
 
-        return new ImsRcsManager(mContext, subscriptionId);
+        return new ImsRcsManager(mContext, subscriptionId, sRcsCache);
     }
 
     /**
@@ -124,7 +135,7 @@ public class ImsManager {
             throw new IllegalArgumentException("Invalid subscription ID: " + subscriptionId);
         }
 
-        return new ImsMmTelManager(subscriptionId);
+        return new ImsMmTelManager(subscriptionId, sTelephonyCache);
     }
 
     /**
@@ -146,6 +157,22 @@ public class ImsManager {
             throw new IllegalArgumentException("Invalid subscription ID: " + subscriptionId);
         }
 
-        return new SipDelegateManager(mContext, subscriptionId);
+        return new SipDelegateManager(mContext, subscriptionId, sRcsCache);
+    }
+
+    private static IImsRcsController getIImsRcsControllerInterface() {
+        return IImsRcsController.Stub.asInterface(
+                TelephonyFrameworkInitializer
+                        .getTelephonyServiceManager()
+                        .getTelephonyImsServiceRegisterer()
+                        .get());
+    }
+
+    private static ITelephony getITelephonyInterface() {
+        return ITelephony.Stub.asInterface(
+                TelephonyFrameworkInitializer
+                        .getTelephonyServiceManager()
+                        .getTelephonyServiceRegisterer()
+                        .get());
     }
 }
diff --git a/telephony/java/android/telephony/ims/DelegateRegistrationState.aidl b/telephony/java/android/telephony/ims/DelegateRegistrationState.aidl
new file mode 100644
index 000000000000..756ea920d06a
--- /dev/null
+++ b/telephony/java/android/telephony/ims/DelegateRegistrationState.aidl
@@ -0,0 +1,19 @@
+/*
+ * 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 android.telephony.ims;
+
+parcelable DelegateRegistrationState;
diff --git a/telephony/java/android/telephony/ims/DelegateRequest.aidl b/telephony/java/android/telephony/ims/DelegateRequest.aidl
new file mode 100644
index 000000000000..60c990f8258f
--- /dev/null
+++ b/telephony/java/android/telephony/ims/DelegateRequest.aidl
@@ -0,0 +1,19 @@
+/*
+ * 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 android.telephony.ims;
+
+parcelable DelegateRequest;
diff --git a/telephony/java/android/telephony/ims/FeatureTagState.aidl b/telephony/java/android/telephony/ims/FeatureTagState.aidl
new file mode 100644
index 000000000000..bce55742461c
--- /dev/null
+++ b/telephony/java/android/telephony/ims/FeatureTagState.aidl
@@ -0,0 +1,19 @@
+/*
+ * 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 android.telephony.ims;
+
+parcelable FeatureTagState;
diff --git a/telephony/java/android/telephony/ims/ImsMmTelManager.java b/telephony/java/android/telephony/ims/ImsMmTelManager.java
index a4f2a316c99d..d1a893f61e00 100644
--- a/telephony/java/android/telephony/ims/ImsMmTelManager.java
+++ b/telephony/java/android/telephony/ims/ImsMmTelManager.java
@@ -29,6 +29,7 @@ import android.os.Binder;
 import android.os.RemoteException;
 import android.os.ServiceSpecificException;
 import android.telephony.AccessNetworkConstants;
+import android.telephony.BinderCacheManager;
 import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyFrameworkInitializer;
@@ -213,6 +214,7 @@ public class ImsMmTelManager implements RegistrationManager {
     }
 
     private final int mSubId;
+    private final BinderCacheManager<ITelephony> mBinderCache;
 
     /**
      * Create an instance of {@link ImsMmTelManager} for the subscription id specified.
@@ -242,7 +244,8 @@ public class ImsMmTelManager implements RegistrationManager {
             throw new IllegalArgumentException("Invalid subscription ID");
         }
 
-        return new ImsMmTelManager(subId);
+        return new ImsMmTelManager(subId, new BinderCacheManager<>(
+                ImsMmTelManager::getITelephonyInterface));
     }
 
     /**
@@ -250,8 +253,9 @@ public class ImsMmTelManager implements RegistrationManager {
      * @hide
      */
     @VisibleForTesting
-    public ImsMmTelManager(int subId) {
+    public ImsMmTelManager(int subId, BinderCacheManager<ITelephony> binderCache) {
         mSubId = subId;
+        mBinderCache = binderCache;
     }
 
     /**
@@ -1367,7 +1371,11 @@ public class ImsMmTelManager implements RegistrationManager {
         }
     }
 
-    private static ITelephony getITelephony() {
+    private ITelephony getITelephony() {
+        return mBinderCache.getBinder();
+    }
+
+    private static ITelephony getITelephonyInterface() {
         ITelephony binder = ITelephony.Stub.asInterface(
                 TelephonyFrameworkInitializer
                         .getTelephonyServiceManager()
diff --git a/telephony/java/android/telephony/ims/ImsRcsManager.java b/telephony/java/android/telephony/ims/ImsRcsManager.java
index 8b6dac82b0eb..4292aae59515 100644
--- a/telephony/java/android/telephony/ims/ImsRcsManager.java
+++ b/telephony/java/android/telephony/ims/ImsRcsManager.java
@@ -28,6 +28,7 @@ import android.os.IBinder;
 import android.os.RemoteException;
 import android.provider.Settings;
 import android.telephony.AccessNetworkConstants;
+import android.telephony.BinderCacheManager;
 import android.telephony.CarrierConfigManager;
 import android.telephony.TelephonyFrameworkInitializer;
 import android.telephony.ims.aidl.IImsCapabilityCallback;
@@ -149,14 +150,17 @@ public class ImsRcsManager {
 
     private final int mSubId;
     private final Context mContext;
+    private final BinderCacheManager<IImsRcsController> mBinderCache;
 
     /**
      * Use {@link ImsManager#getImsRcsManager(int)} to create an instance of this class.
      * @hide
      */
-    public ImsRcsManager(Context context, int subId) {
+    public ImsRcsManager(Context context, int subId,
+            BinderCacheManager<IImsRcsController> binderCache) {
         mSubId = subId;
         mContext = context;
+        mBinderCache = binderCache;
     }
 
     /**
diff --git a/telephony/java/android/telephony/ims/SipDelegateImsConfiguration.aidl b/telephony/java/android/telephony/ims/SipDelegateImsConfiguration.aidl
new file mode 100644
index 000000000000..44ae1b130046
--- /dev/null
+++ b/telephony/java/android/telephony/ims/SipDelegateImsConfiguration.aidl
@@ -0,0 +1,19 @@
+/*
+ * 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 android.telephony.ims;
+
+parcelable SipDelegateImsConfiguration;
diff --git a/telephony/java/android/telephony/ims/SipDelegateManager.java b/telephony/java/android/telephony/ims/SipDelegateManager.java
index 3c59d4f6209c..337b7d49323d 100644
--- a/telephony/java/android/telephony/ims/SipDelegateManager.java
+++ b/telephony/java/android/telephony/ims/SipDelegateManager.java
@@ -22,12 +22,12 @@ import android.annotation.NonNull;
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
 import android.content.Context;
-import android.os.IBinder;
 import android.os.RemoteException;
 import android.os.ServiceSpecificException;
+import android.telephony.BinderCacheManager;
 import android.telephony.CarrierConfigManager;
-import android.telephony.TelephonyFrameworkInitializer;
 import android.telephony.ims.aidl.IImsRcsController;
+import android.telephony.ims.aidl.SipDelegateConnectionAidlWrapper;
 import android.telephony.ims.stub.DelegateConnectionMessageCallback;
 import android.telephony.ims.stub.DelegateConnectionStateCallback;
 import android.telephony.ims.stub.SipDelegate;
@@ -261,6 +261,7 @@ public class SipDelegateManager {
 
     private final Context mContext;
     private final int mSubId;
+    private final BinderCacheManager<IImsRcsController> mBinderCache;
 
     /**
      * Only visible for testing. To instantiate an instance of this class, please use
@@ -268,9 +269,11 @@ public class SipDelegateManager {
      * @hide
      */
     @VisibleForTesting
-    public SipDelegateManager(Context context, int subId) {
+    public SipDelegateManager(Context context, int subId,
+            BinderCacheManager<IImsRcsController> binderCache) {
         mContext = context;
         mSubId = subId;
+        mBinderCache = binderCache;
     }
 
     /**
@@ -290,7 +293,7 @@ public class SipDelegateManager {
     @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
     public boolean isSupported() throws ImsException {
         try {
-            IImsRcsController controller = getIImsRcsController();
+            IImsRcsController controller = mBinderCache.getBinder();
             if (controller == null) {
                 throw new ImsException("Telephony server is down",
                         ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
@@ -315,7 +318,7 @@ public class SipDelegateManager {
      * a persistent binding to when the app is the default SMS application.
      * @param request The parameters that are associated with the SipDelegate creation request that
      *                will be used to create the SipDelegate connection.
-     * @param e The executor that will be used to call the callbacks associated with this
+     * @param executor The executor that will be used to call the callbacks associated with this
      *          SipDelegate.
      * @param dc The callback that will be used to notify the listener of the creation/destruction
      *           of the remote SipDelegate as well as changes to the state of the remote SipDelegate
@@ -327,18 +330,34 @@ public class SipDelegateManager {
      * associated with this SipDelegateManager. See {@link ImsException#getCode()}.
      * @hide
      */
-    public void createSipDelegate(@NonNull DelegateRequest request, @NonNull Executor e,
+    @RequiresPermission(Manifest.permission.MODIFY_PHONE_STATE)
+    public void createSipDelegate(@NonNull DelegateRequest request, @NonNull Executor executor,
             @NonNull DelegateConnectionStateCallback dc,
             @NonNull DelegateConnectionMessageCallback mc) throws ImsException {
-        if (request == null || e == null || dc == null || mc == null) {
+        if (request == null || executor == null || dc == null || mc == null) {
             throw new IllegalArgumentException("Invalid arguments passed into createSipDelegate");
         }
-        throw new ImsException("creating a SipDelegate is not supported" ,
-                ImsException.CODE_ERROR_UNSUPPORTED_OPERATION);
+        try {
+            SipDelegateConnectionAidlWrapper wrapper =
+                    new SipDelegateConnectionAidlWrapper(executor, dc, mc);
+            IImsRcsController controller = mBinderCache.listenOnBinder(wrapper,
+                    wrapper::binderDied);
+            if (controller == null) {
+                throw new ImsException("Telephony server is down",
+                        ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
+            }
+            controller.createSipDelegate(mSubId, request, wrapper.getStateCallbackBinder(),
+                    wrapper.getMessageCallbackBinder());
+        } catch (ServiceSpecificException e) {
+            throw new ImsException(e.getMessage(), e.errorCode);
+        } catch (RemoteException e) {
+            throw new ImsException(e.getMessage(),
+                    ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
+        }
     }
 
     /**
-     * Destroy a previously created SipDelegateConnection that was created using
+     * Destroy a previously created {@link SipDelegateConnection} that was created using
      * {@link #createSipDelegate}.
      * <p>
      * This will also clean up all related callbacks in the associated ImsService.
@@ -346,20 +365,32 @@ public class SipDelegateManager {
      * @param reason The reason for why this SipDelegateConnection was destroyed.
      * @hide
      */
+    @RequiresPermission(Manifest.permission.MODIFY_PHONE_STATE)
     public void destroySipDelegate(@NonNull SipDelegateConnection delegateConnection,
             @SipDelegateDestroyReason int reason) {
 
         if (delegateConnection == null) {
             throw new IllegalArgumentException("invalid argument passed into destroySipDelegate");
         }
-        // not supported yet.
-    }
-
-    private IImsRcsController getIImsRcsController() {
-        IBinder binder = TelephonyFrameworkInitializer
-                .getTelephonyServiceManager()
-                .getTelephonyImsServiceRegisterer()
-                .get();
-        return IImsRcsController.Stub.asInterface(binder);
+        if (delegateConnection instanceof SipDelegateConnectionAidlWrapper) {
+            SipDelegateConnectionAidlWrapper w =
+                    (SipDelegateConnectionAidlWrapper) delegateConnection;
+            try {
+                IImsRcsController c = mBinderCache.removeRunnable(w);
+                c.destroySipDelegate(mSubId, w.getSipDelegateBinder(), reason);
+            } catch (RemoteException e) {
+                // Connection to telephony died, but this will signal destruction of SipDelegate
+                // eventually anyway, so return normally.
+                try {
+                    w.getStateCallbackBinder().onDestroyed(
+                            SipDelegateManager.SIP_DELEGATE_DESTROY_REASON_REQUESTED_BY_APP);
+                } catch (RemoteException ignore) {
+                    // Local to process.
+                }
+            }
+        } else {
+            throw new IllegalArgumentException("Unknown SipDelegateConnection implementation passed"
+                    + " into this method");
+        }
     }
 }
diff --git a/telephony/java/android/telephony/ims/SipMessage.aidl b/telephony/java/android/telephony/ims/SipMessage.aidl
new file mode 100644
index 000000000000..5140f8ac357f
--- /dev/null
+++ b/telephony/java/android/telephony/ims/SipMessage.aidl
@@ -0,0 +1,19 @@
+/*
+ * 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 android.telephony.ims;
+
+parcelable SipMessage;
diff --git a/telephony/java/android/telephony/ims/aidl/IImsRcsController.aidl b/telephony/java/android/telephony/ims/aidl/IImsRcsController.aidl
index 8e84e9373f65..f218e35a5a9b 100644
--- a/telephony/java/android/telephony/ims/aidl/IImsRcsController.aidl
+++ b/telephony/java/android/telephony/ims/aidl/IImsRcsController.aidl
@@ -17,10 +17,15 @@
 package android.telephony.ims.aidl;
 
 import android.net.Uri;
+import android.telephony.ims.DelegateRequest;
 import android.telephony.ims.aidl.IImsCapabilityCallback;
+import android.telephony.ims.aidl.IImsRegistrationCallback;
 import android.telephony.ims.aidl.IRcsUceControllerCallback;
 import android.telephony.ims.aidl.IRcsUcePublishStateCallback;
-import android.telephony.ims.aidl.IImsRegistrationCallback;
+import android.telephony.ims.aidl.IRcsUcePublishStateCallback;
+import android.telephony.ims.aidl.ISipDelegate;
+import android.telephony.ims.aidl.ISipDelegateMessageCallback;
+import android.telephony.ims.aidl.ISipDelegateConnectionStateCallback;
 
 import com.android.ims.ImsFeatureContainer;
 import com.android.ims.internal.IImsServiceFeatureCallback;
@@ -58,6 +63,10 @@ interface IImsRcsController {
 
     // SipDelegateManager
     boolean isSipDelegateSupported(int subId);
+    void createSipDelegate(int subId, in DelegateRequest request,
+            ISipDelegateConnectionStateCallback delegateState,
+            ISipDelegateMessageCallback delegateMessage);
+    void destroySipDelegate(int subId, ISipDelegate connection, int reason);
 
     // Internal commands that should not be made public
     void registerRcsFeatureCallback(int slotId, in IImsServiceFeatureCallback callback);
diff --git a/telephony/java/android/telephony/ims/aidl/ISipDelegate.aidl b/telephony/java/android/telephony/ims/aidl/ISipDelegate.aidl
new file mode 100644
index 000000000000..477ee958e1e8
--- /dev/null
+++ b/telephony/java/android/telephony/ims/aidl/ISipDelegate.aidl
@@ -0,0 +1,32 @@
+/*
+ * 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 android.telephony.ims.aidl;
+
+import android.telephony.ims.SipMessage;
+
+/**
+ * See {@link SipDelegate} and {@link SipDelegateConnection} for docs regarding this callback.
+ * {@hide}
+ */
+oneway interface ISipDelegate {
+    void sendMessage(in SipMessage sipMessage, int configVersion);
+    void notifyMessageReceived(in String viaTransactionId);
+    void notifyMessageReceiveError(in String viaTransactionId, int reason);
+
+    // only used by SipDelegate.
+    void closeDialog(in String callId);
+}
diff --git a/telephony/java/android/telephony/ims/aidl/ISipDelegateConnectionStateCallback.aidl b/telephony/java/android/telephony/ims/aidl/ISipDelegateConnectionStateCallback.aidl
new file mode 100644
index 000000000000..ddfcb9994cb8
--- /dev/null
+++ b/telephony/java/android/telephony/ims/aidl/ISipDelegateConnectionStateCallback.aidl
@@ -0,0 +1,34 @@
+/*
+ * 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 android.telephony.ims.aidl;
+
+import android.telephony.ims.DelegateRegistrationState;
+import android.telephony.ims.FeatureTagState;
+import android.telephony.ims.SipDelegateImsConfiguration;
+import android.telephony.ims.aidl.ISipDelegate;
+
+/**
+ * See {@link SipDelegateConnectionStateCallback} for docs regarding this callback.
+ * {@hide}
+ */
+oneway interface ISipDelegateConnectionStateCallback {
+    void onCreated(ISipDelegate c);
+    void onFeatureTagStatusChanged(in DelegateRegistrationState registrationState,
+                in List<FeatureTagState> deniedFeatureTags);
+    void onImsConfigurationChanged(in SipDelegateImsConfiguration registeredSipConfig);
+    void onDestroyed(int reason);
+}
diff --git a/telephony/java/android/telephony/ims/aidl/ISipDelegateMessageCallback.aidl b/telephony/java/android/telephony/ims/aidl/ISipDelegateMessageCallback.aidl
new file mode 100644
index 000000000000..30b7d6c70647
--- /dev/null
+++ b/telephony/java/android/telephony/ims/aidl/ISipDelegateMessageCallback.aidl
@@ -0,0 +1,30 @@
+/*
+ * 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 android.telephony.ims.aidl;
+
+import android.telephony.ims.SipMessage;
+
+/**
+ * See {@link DelegateMessageCallback} and {@link DelegateConnectionMessageCallback} for docs
+ * regarding this callback.
+ * {@hide}
+ */
+oneway interface ISipDelegateMessageCallback {
+   void onMessageReceived(in SipMessage message);
+   void onMessageSent(in String viaTransactionId);
+   void onMessageSendFailure(in String viaTransactionId, int reason);
+}
diff --git a/telephony/java/android/telephony/ims/aidl/SipDelegateConnectionAidlWrapper.java b/telephony/java/android/telephony/ims/aidl/SipDelegateConnectionAidlWrapper.java
new file mode 100644
index 000000000000..3bd1a462b31a
--- /dev/null
+++ b/telephony/java/android/telephony/ims/aidl/SipDelegateConnectionAidlWrapper.java
@@ -0,0 +1,260 @@
+/*
+ * 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 android.telephony.ims.aidl;
+
+import android.os.Binder;
+import android.os.IBinder;
+import android.os.RemoteException;
+import android.telephony.ims.DelegateRegistrationState;
+import android.telephony.ims.FeatureTagState;
+import android.telephony.ims.SipDelegateConnection;
+import android.telephony.ims.SipDelegateImsConfiguration;
+import android.telephony.ims.SipDelegateManager;
+import android.telephony.ims.SipMessage;
+import android.telephony.ims.stub.DelegateConnectionMessageCallback;
+import android.telephony.ims.stub.DelegateConnectionStateCallback;
+import android.telephony.ims.stub.SipDelegate;
+import android.util.ArraySet;
+import android.util.Log;
+
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * Wrapper class implementing {@link SipDelegateConnection} using AIDL, which is returned to the
+ * local process. Also holds a reference to incoming connection message and state AIDL impl to
+ * trampoline events to callbacks as well as notify the local process in the event that the remote
+ * process becomes unavailable.
+ * <p>
+ * When the remote {@link SipDelegate} is created, this instance tracks the
+ * {@link ISipDelegate} associated with it and implements the
+ * {@link SipDelegateConnection} sent back to the local callback.
+ * @hide
+ */
+public class SipDelegateConnectionAidlWrapper implements SipDelegateConnection,
+        IBinder.DeathRecipient {
+    private static final String LOG_TAG = "SipDelegateCAW";
+
+    private final ISipDelegateConnectionStateCallback.Stub mStateBinder =
+            new ISipDelegateConnectionStateCallback.Stub() {
+        @Override
+        public void onCreated(ISipDelegate c) {
+            associateSipDelegate(c);
+            final long token = Binder.clearCallingIdentity();
+            try {
+                mExecutor.execute(() ->
+                        mStateCallback.onCreated(SipDelegateConnectionAidlWrapper.this));
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+        }
+
+        @Override
+        public void onFeatureTagStatusChanged(DelegateRegistrationState registrationState,
+                List<FeatureTagState> deniedFeatureTags) {
+            final long token = Binder.clearCallingIdentity();
+            try {
+                mExecutor.execute(() ->
+                        mStateCallback.onFeatureTagStatusChanged(registrationState,
+                                new ArraySet<>(deniedFeatureTags)));
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+        }
+
+        @Override
+        public void onImsConfigurationChanged(SipDelegateImsConfiguration registeredSipConfig) {
+            final long token = Binder.clearCallingIdentity();
+            try {
+                mExecutor.execute(() ->
+                        mStateCallback.onImsConfigurationChanged(registeredSipConfig));
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+        }
+
+        @Override
+        public void onDestroyed(int reason) {
+            invalidateSipDelegateBinder();
+            final long token = Binder.clearCallingIdentity();
+            try {
+                mExecutor.execute(() ->
+                        mStateCallback.onDestroyed(reason));
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+        }
+    };
+
+    private final ISipDelegateMessageCallback.Stub mMessageBinder =
+            new ISipDelegateMessageCallback.Stub() {
+                @Override
+                public void onMessageReceived(SipMessage message) {
+                    final long token = Binder.clearCallingIdentity();
+                    try {
+                        mExecutor.execute(() ->
+                                mMessageCallback.onMessageReceived(message));
+                    } finally {
+                        Binder.restoreCallingIdentity(token);
+                    }
+                }
+
+                @Override
+                public void onMessageSent(String viaTransactionId) {
+                    final long token = Binder.clearCallingIdentity();
+                    try {
+                        mExecutor.execute(() ->
+                                mMessageCallback.onMessageSent(viaTransactionId));
+                    } finally {
+                        Binder.restoreCallingIdentity(token);
+                    }
+                }
+
+                @Override
+                public void onMessageSendFailure(String viaTransactionId, int reason) {
+                    final long token = Binder.clearCallingIdentity();
+                    try {
+                        mExecutor.execute(() ->
+                                mMessageCallback.onMessageSendFailure(viaTransactionId, reason));
+                    } finally {
+                        Binder.restoreCallingIdentity(token);
+                    }
+                }
+            };
+
+
+    private final Executor mExecutor;
+    private final DelegateConnectionStateCallback mStateCallback;
+    private final DelegateConnectionMessageCallback mMessageCallback;
+    private final AtomicReference<ISipDelegate> mDelegateBinder =
+            new AtomicReference<>();
+
+    /**
+     * Wrap the local state and message callbacks, calling the implementation of these interfaces
+     * when the remote process calls these methods.
+     */
+    public SipDelegateConnectionAidlWrapper(Executor executor,
+            DelegateConnectionStateCallback stateCallback,
+            DelegateConnectionMessageCallback messageCallback) {
+        mExecutor = executor;
+        mStateCallback = stateCallback;
+        mMessageCallback = messageCallback;
+    }
+
+    @Override
+    public void sendMessage(SipMessage sipMessage, int configVersion) {
+        try {
+            ISipDelegate conn = getSipDelegateBinder();
+            if (conn == null) {
+                notifyLocalMessageFailedToSend(sipMessage,
+                        SipDelegateManager.MESSAGE_FAILURE_REASON_DELEGATE_CLOSED);
+                return;
+            }
+            conn.sendMessage(sipMessage, configVersion);
+        } catch (RemoteException e) {
+            notifyLocalMessageFailedToSend(sipMessage,
+                        SipDelegateManager.MESSAGE_FAILURE_REASON_DELEGATE_DEAD);
+        }
+    }
+
+    @Override
+    public void notifyMessageReceived(String viaTransactionId) {
+        try {
+            ISipDelegate conn = getSipDelegateBinder();
+            if (conn == null) {
+                return;
+            }
+            conn.notifyMessageReceived(viaTransactionId);
+        } catch (RemoteException e) {
+            // Nothing to do here, app will eventually get remote death callback.
+        }
+    }
+
+    @Override
+    public void notifyMessageReceiveError(String viaTransactionId, int reason) {
+        try {
+            ISipDelegate conn = getSipDelegateBinder();
+            if (conn == null) {
+                return;
+            }
+            conn.notifyMessageReceiveError(viaTransactionId, reason);
+        } catch (RemoteException e) {
+            // Nothing to do here, app will eventually get remote death callback.
+        }
+    }
+
+    // Also called upon IImsRcsController death (telephony process dies).
+    @Override
+    public void binderDied() {
+        invalidateSipDelegateBinder();
+        mExecutor.execute(() -> mStateCallback.onDestroyed(
+                SipDelegateManager.SIP_DELEGATE_DESTROY_REASON_SERVICE_DEAD));
+    }
+
+    /**
+     * @return Implementation of state binder.
+     */
+    public ISipDelegateConnectionStateCallback getStateCallbackBinder() {
+        return mStateBinder;
+    }
+
+    /**
+     * @return Implementation of message binder.
+     */
+    public ISipDelegateMessageCallback getMessageCallbackBinder() {
+        return mMessageBinder;
+    }
+
+    /**
+     * @return The ISipDelegateConnection associated with this wrapper.
+     */
+    public ISipDelegate getSipDelegateBinder() {
+        return mDelegateBinder.get();
+    }
+
+    private void associateSipDelegate(ISipDelegate c) {
+        if (c != null) {
+            try {
+                c.asBinder().linkToDeath(this, 0 /*flags*/);
+            } catch (RemoteException e) {
+                // already dead.
+                c = null;
+            }
+        }
+        mDelegateBinder.set(c);
+    }
+
+    private void invalidateSipDelegateBinder() {
+        ISipDelegate oldVal = mDelegateBinder.getAndUpdate((unused) -> null);
+        if (oldVal != null) {
+            try {
+                oldVal.asBinder().unlinkToDeath(this, 0 /*flags*/);
+            } catch (NoSuchElementException e) {
+                Log.i(LOG_TAG, "invalidateSipDelegateBinder: " + e);
+            }
+        }
+    }
+
+    private void notifyLocalMessageFailedToSend(SipMessage m, int reason) {
+        //TODO: parse transaction ID or throw IllegalArgumentException if the SipMessage
+        // transaction ID can not be parsed.
+        mExecutor.execute(() ->
+                mMessageCallback.onMessageSendFailure(null, reason));
+    }
+}