Remove SimChangeListener from Tethering

SimChangeListener is obsolete. It is replace by
ACTION_CARRIER_CONFIG_CHANGED.

Test: as follows
    - built, flashed, booted
    - runtest frameworks-net passes (with --no-hidden-api-checks)
    - tethering/hotspot on/off
Bug: 111490073

Change-Id: I82644ea136f43869a953a1f7b72dc489fe90f380

3 files changed, 0 insertions, 224 deletions

diff --git a/services/core/java/com/android/server/connectivity/Tethering.java b/services/core/java/com/android/server/connectivity/Tethering.java
index 0230f75b8a91..d05311630ffb 100644
--- a/services/core/java/com/android/server/connectivity/Tethering.java
+++ b/services/core/java/com/android/server/connectivity/Tethering.java
@@ -115,7 +115,6 @@ import com.android.server.LocalServices;
 import com.android.server.connectivity.tethering.IControlsTethering;
 import com.android.server.connectivity.tethering.IPv6TetheringCoordinator;
 import com.android.server.connectivity.tethering.OffloadController;
-import com.android.server.connectivity.tethering.SimChangeListener;
 import com.android.server.connectivity.tethering.TetherInterfaceStateMachine;
 import com.android.server.connectivity.tethering.TetheringConfiguration;
 import com.android.server.connectivity.tethering.TetheringDependencies;
@@ -201,8 +200,6 @@ public class Tethering extends BaseNetworkObserver {
     // into a single coherent structure.
     private final HashSet<TetherInterfaceStateMachine> mForwardedDownstreams;
     private final VersionedBroadcastListener mCarrierConfigChange;
-    // TODO: Delete SimChangeListener; it's obsolete.
-    private final SimChangeListener mSimChange;
     private final TetheringDependencies mDeps;
 
     private volatile TetheringConfiguration mConfig;
@@ -252,14 +249,6 @@ public class Tethering extends BaseNetworkObserver {
                     updateConfiguration();
                     reevaluateSimCardProvisioning();
                 });
-        // TODO: Remove SimChangeListener altogether. For now, we retain it
-        // for logging purposes in case we need to debug something that might
-        // be related to changing signals from ACTION_SIM_STATE_CHANGED to
-        // ACTION_CARRIER_CONFIG_CHANGED.
-        mSimChange = new SimChangeListener(
-                mContext, smHandler, () -> {
-                    mLog.log("OBSERVED SIM card change");
-                });
 
         mStateReceiver = new StateReceiver();
 
@@ -1529,7 +1518,6 @@ public class Tethering extends BaseNetworkObserver {
                     return;
                 }
 
-                mSimChange.startListening();
                 mUpstreamNetworkMonitor.start(mDeps.getDefaultNetworkRequest());
 
                 // TODO: De-duplicate with updateUpstreamWanted() below.
@@ -1545,7 +1533,6 @@ public class Tethering extends BaseNetworkObserver {
             public void exit() {
                 mOffload.stop();
                 mUpstreamNetworkMonitor.stop();
-                mSimChange.stopListening();
                 notifyDownstreamsOfNewUpstreamIface(null);
                 handleNewUpstreamNetworkState(null);
             }
diff --git a/services/core/java/com/android/server/connectivity/tethering/SimChangeListener.java b/services/core/java/com/android/server/connectivity/tethering/SimChangeListener.java
deleted file mode 100644
index 33c9355ae64b..000000000000
--- a/services/core/java/com/android/server/connectivity/tethering/SimChangeListener.java
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2017 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.server.connectivity.tethering;
-
-import static com.android.internal.telephony.IccCardConstants.INTENT_VALUE_ICC_LOADED;
-import static com.android.internal.telephony.IccCardConstants.INTENT_KEY_ICC_STATE;
-
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.net.util.VersionedBroadcastListener;
-import android.net.util.VersionedBroadcastListener.IntentCallback;
-import android.os.Handler;
-import android.util.Log;
-
-import com.android.internal.telephony.TelephonyIntents;
-
-import java.util.concurrent.atomic.AtomicInteger;
-import java.util.function.Consumer;
-
-
-/**
- * A utility class that runs the provided callback on the provided handler when
- * observing a new SIM card having been loaded.
- *
- * @hide
- */
-public class SimChangeListener extends VersionedBroadcastListener {
-    private static final String TAG = SimChangeListener.class.getSimpleName();
-    private static final boolean DBG = false;
-
-    public SimChangeListener(Context ctx, Handler handler, Runnable onSimCardLoadedCallback) {
-        super(TAG, ctx, handler, makeIntentFilter(), makeCallback(onSimCardLoadedCallback));
-    }
-
-    private static IntentFilter makeIntentFilter() {
-        final IntentFilter filter = new IntentFilter();
-        filter.addAction(TelephonyIntents.ACTION_SIM_STATE_CHANGED);
-        return filter;
-    }
-
-    private static Consumer<Intent> makeCallback(Runnable onSimCardLoadedCallback) {
-        return new Consumer<Intent>() {
-            private boolean mSimNotLoadedSeen = false;
-
-            @Override
-            public void accept(Intent intent) {
-                final String state = intent.getStringExtra(INTENT_KEY_ICC_STATE);
-                Log.d(TAG, "got Sim changed to state " + state + ", mSimNotLoadedSeen=" +
-                        mSimNotLoadedSeen);
-
-                if (!INTENT_VALUE_ICC_LOADED.equals(state)) {
-                    mSimNotLoadedSeen = true;
-                    return;
-                }
-
-                if (mSimNotLoadedSeen) {
-                    mSimNotLoadedSeen = false;
-                    onSimCardLoadedCallback.run();
-                }
-            }
-        };
-    }
-}
diff --git a/tests/net/java/com/android/server/connectivity/tethering/SimChangeListenerTest.java b/tests/net/java/com/android/server/connectivity/tethering/SimChangeListenerTest.java
deleted file mode 100644
index f58ea7e9375f..000000000000
--- a/tests/net/java/com/android/server/connectivity/tethering/SimChangeListenerTest.java
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * Copyright (C) 2017 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.server.connectivity.tethering;
-
-import static com.android.internal.telephony.IccCardConstants.INTENT_VALUE_ICC_ABSENT;
-import static com.android.internal.telephony.IccCardConstants.INTENT_VALUE_ICC_LOADED;
-import static com.android.internal.telephony.IccCardConstants.INTENT_KEY_ICC_STATE;
-import static com.android.internal.telephony.TelephonyIntents.ACTION_SIM_STATE_CHANGED;
-
-import static org.junit.Assert.assertEquals;
-import static org.mockito.Mockito.reset;
-
-import android.content.Context;
-import android.content.Intent;
-import android.os.Handler;
-import android.os.Looper;
-import android.os.UserHandle;
-
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
-
-import com.android.internal.util.test.BroadcastInterceptingContext;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.runner.RunWith;
-import org.junit.Test;
-import org.mockito.Mock;
-import org.mockito.Mockito;
-import org.mockito.MockitoAnnotations;
-
-
-@RunWith(AndroidJUnit4.class)
-@SmallTest
-public class SimChangeListenerTest {
-    @Mock private Context mContext;
-    private BroadcastInterceptingContext mServiceContext;
-    private Handler mHandler;
-    private SimChangeListener mSCL;
-    private int mCallbackCount;
-
-    private void doCallback() { mCallbackCount++; }
-
-    private class MockContext extends BroadcastInterceptingContext {
-        MockContext(Context base) {
-            super(base);
-        }
-    }
-
-    @BeforeClass
-    public static void setUpBeforeClass() throws Exception {
-        if (Looper.myLooper() == null) {
-            Looper.prepare();
-        }
-    }
-
-    @Before public void setUp() throws Exception {
-        MockitoAnnotations.initMocks(this);
-        reset(mContext);
-        mServiceContext = new MockContext(mContext);
-        mHandler = new Handler(Looper.myLooper());
-        mCallbackCount = 0;
-        mSCL = new SimChangeListener(mServiceContext, mHandler, () -> doCallback());
-    }
-
-    @After public void tearDown() throws Exception {
-        if (mSCL != null) {
-            mSCL.stopListening();
-            mSCL = null;
-        }
-    }
-
-    private void sendSimStateChangeIntent(String state) {
-        final Intent intent = new Intent(ACTION_SIM_STATE_CHANGED);
-        intent.putExtra(INTENT_KEY_ICC_STATE, state);
-        mServiceContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
-    }
-
-    @Test
-    public void testNotSeenFollowedBySeenCallsCallback() {
-        mSCL.startListening();
-
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_ABSENT);
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_LOADED);
-        assertEquals(1, mCallbackCount);
-
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_ABSENT);
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_LOADED);
-        assertEquals(2, mCallbackCount);
-
-        mSCL.stopListening();
-    }
-
-    @Test
-    public void testNotListeningDoesNotCallback() {
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_ABSENT);
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_LOADED);
-        assertEquals(0, mCallbackCount);
-
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_ABSENT);
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_LOADED);
-        assertEquals(0, mCallbackCount);
-    }
-
-    @Test
-    public void testSeenOnlyDoesNotCallback() {
-        mSCL.startListening();
-
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_LOADED);
-        assertEquals(0, mCallbackCount);
-
-        sendSimStateChangeIntent(INTENT_VALUE_ICC_LOADED);
-        assertEquals(0, mCallbackCount);
-
-        mSCL.stopListening();
-    }
-}