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Commit d9e57317 authored by Brad Ebinger's avatar Brad Ebinger
Browse files

Handle Dead Objects from Phone Crashes better 

1) Check to make sure ImsService is available when calling
changeMmTelCapability.
2) Remove caching of ImsConfig in ImsManager. It is already
cached properly in MmTelFeatureConnection.
3) Create a DeathRecipient for MmTelFeature in
MmTelFeatureConnection that cleans up all caches and notifies
ImsManager that the connection is now unavailable.

Bug: 77941698
Test: Manual
Merged-In: Ib26ce5308ec75113ad02c281b2a19cba5f94cdac
Change-Id: I9c3721fe275a94f7f8841e8e84a2f9d8a3c4823b
parent 9acd6288

src/java/com/android/ims/ImsManager.java

+26 −40
Original line number Diff line number Diff line
@@ -368,18 +368,16 @@ public class ImsManager { 
    private int mPhoneId;

    private final boolean mConfigDynamicBind;

    private @Nullable MmTelFeatureConnection mMmTelFeatureConnection = null;

    private ImsServiceDeathRecipient mDeathRecipient = new ImsServiceDeathRecipient();

    // Ut interface for the supplementary service configuration

    private ImsUt mUt = null;

    // Interface to get/set ims config items

    private ImsConfig mConfig = null;

    private boolean mConfigUpdated = false;



    private ImsConfigListener mImsConfigListener;



    //TODO: Move these caches into the MmTelFeature Connection and restrict their lifetimes to the

    // lifetime of the MmTelFeature.

    // Ut interface for the supplementary service configuration

    private ImsUt mUt = null;

    // ECBM interface

    private ImsEcbm mEcbm = null;



    private ImsMultiEndpoint mMultiEndpoint = null;



    private Set<MmTelFeatureConnection.IFeatureUpdate> mStatusCallbacks =
@@ -774,7 +772,7 @@ public class ImsManager { 
                log("setVtSetting(b) : imsServiceAllowTurnOff -> turnOffIms");

                turnOffIms();

            }

        } catch (ImsException | RemoteException e) {

        } catch (ImsException e) {

            // The ImsService is down. Since the SubscriptionManager already recorded the user's

            // preference, it will be resent in updateImsServiceConfig when the ImsPhoneCallTracker

            // reconnects.
@@ -902,7 +900,7 @@ public class ImsManager { 
            }



            setWfcModeInternal(imsWfcModeFeatureValue);

        } catch (ImsException | RemoteException e) {

        } catch (ImsException e) {

            loge("setWfcSetting(): ", e);

        }

    }
@@ -1301,7 +1299,7 @@ public class ImsManager { 
                }



                mConfigUpdated = true;

            } catch (ImsException | RemoteException e) {

            } catch (ImsException e) {

                loge("updateImsServiceConfig: ", e);

                mConfigUpdated = false;

            }
@@ -1313,7 +1311,7 @@ public class ImsManager { 
     * @return whether feature is On

     * @throws ImsException

     */

    private boolean updateVolteFeatureValue() throws RemoteException {

    private boolean updateVolteFeatureValue() throws ImsException {

        boolean available = isVolteEnabledByPlatform();

        boolean enabled = isEnhanced4gLteModeSettingEnabledByUser();

        boolean isNonTty = isNonTtyOrTtyOnVolteEnabled();
@@ -1334,7 +1332,7 @@ public class ImsManager { 
     * @return whether feature is On

     * @throws ImsException

     */

    private boolean updateVideoCallFeatureValue() throws RemoteException {

    private boolean updateVideoCallFeatureValue() throws ImsException {

        boolean available = isVtEnabledByPlatform();

        boolean enabled = isVtEnabledByUser();

        boolean isNonTty = isNonTtyOrTtyOnVolteEnabled();
@@ -1361,7 +1359,7 @@ public class ImsManager { 
     * @return whether feature is On

     * @throws ImsException

     */

    private boolean updateWfcFeatureAndProvisionedValues() throws RemoteException {

    private boolean updateWfcFeatureAndProvisionedValues() throws ImsException {

        TelephonyManager tm = new TelephonyManager(mContext, getSubId());

        boolean isNetworkRoaming = tm.isNetworkRoaming();

        boolean available = isWfcEnabledByPlatform();
@@ -1652,7 +1650,6 @@ public class ImsManager { 
            mMmTelFeatureConnection.closeConnection();

        }

        mUt = null;

        mConfig = null;

        mEcbm = null;

        mMultiEndpoint = null;

    }
@@ -1801,35 +1798,34 @@ public class ImsManager { 
     * @throws ImsException if getting the setting interface results in an error.

     */

    public ImsConfig getConfigInterface() throws ImsException {

        if (mConfig != null && mConfig.isBinderAlive()) {

            return mConfig;

        }



        checkAndThrowExceptionIfServiceUnavailable();



        try {

            IImsConfig config = mMmTelFeatureConnection.getConfigInterface();

            if (config == null) {

                throw new ImsException("getConfigInterface()",

                        ImsReasonInfo.CODE_LOCAL_SERVICE_UNAVAILABLE);

            }

            mConfig = new ImsConfig(config, mContext);

            return new ImsConfig(config);

        } catch (RemoteException e) {

            throw new ImsException("getConfigInterface()", e,

                    ImsReasonInfo.CODE_LOCAL_IMS_SERVICE_DOWN);

        }

        return mConfig;

    }



    public void changeMmTelCapability(

            @MmTelFeature.MmTelCapabilities.MmTelCapability int capability,

            @ImsRegistrationImplBase.ImsRegistrationTech int radioTech,

            boolean isEnabled) throws RemoteException {

            boolean isEnabled) throws ImsException {

        checkAndThrowExceptionIfServiceUnavailable();



        CapabilityChangeRequest request = new CapabilityChangeRequest();

        if (isEnabled) {

            request.addCapabilitiesToEnableForTech(capability, radioTech);

        } else {

            request.addCapabilitiesToDisableForTech(capability, radioTech);

        }

        try {

            mMmTelFeatureConnection.changeEnabledCapabilities(request, null);

            if (mImsConfigListener != null) {

                mImsConfigListener.onSetFeatureResponse(capability,
@@ -1837,6 +1833,10 @@ public class ImsManager { 
                        isEnabled ? ImsConfig.FeatureValueConstants.ON

                                : ImsConfig.FeatureValueConstants.OFF, -1);

            }

        } catch (RemoteException e) {

            throw new ImsException("changeMmTelCapability()", e,

                    ImsReasonInfo.CODE_LOCAL_IMS_SERVICE_DOWN);

        }

    }



    public void setRttEnabled(boolean enabled) {
@@ -2149,20 +2149,6 @@ public class ImsManager { 
        mRecentDisconnectReasons.addLast(reason);

    }



    /**

     * Death recipient class for monitoring IMS service.

     */

    private class ImsServiceDeathRecipient implements IBinder.DeathRecipient {

        @Override

        public void binderDied() {

            mMmTelFeatureConnection = null;

            mUt = null;

            mConfig = null;

            mEcbm = null;

            mMultiEndpoint = null;

        }

    }



    /**

     * Gets the ECBM interface to request ECBM exit.

     *

src/java/com/android/ims/MmTelFeatureConnection.java

+33 −14
Original line number Diff line number Diff line
@@ -75,6 +75,11 @@ public class MmTelFeatureConnection { 
    private IImsRegistration mRegistrationBinder;

    private IImsConfig mConfigBinder;



    private IBinder.DeathRecipient mDeathRecipient = () -> {

            Log.w(TAG, "DeathRecipient triggered, binder died.");

            onRemovedOrDied();

    };



    private abstract class CallbackAdapterManager<T> {

        private static final String TAG = "CallbackAdapterManager";
@@ -337,14 +342,8 @@ public class MmTelFeatureConnection { 
                }

                switch (feature) {

                    case ImsFeature.FEATURE_MMTEL: {

                        if (mIsAvailable) {

                            Log.i(TAG, "MmTel disabled on slotId: " + slotId);

                            mIsAvailable = false;

                            mmTelFeatureRemoved();

                            if (mStatusCallback != null) {

                                mStatusCallback.notifyUnavailable();

                            }

                        }

                        Log.i(TAG, "MmTel removed on slotId: " + slotId);

                        onRemovedOrDied();

                        break;

                    }

                    case ImsFeature.FEATURE_EMERGENCY_MMTEL : {
@@ -376,12 +375,23 @@ public class MmTelFeatureConnection { 
        mContext = context;

    }



    // Called when the MmTelFeatureConnection has received an unavailable notification.

    private void mmTelFeatureRemoved() {

    /**

     * Called when the MmTelFeature has either been removed by Telephony or crashed.

     */

    private void onRemovedOrDied() {

        synchronized (mLock) {

            if (mIsAvailable) {

                mIsAvailable = false;

                // invalidate caches.

                mRegistrationBinder = null;

                mConfigBinder = null;

                if (mBinder != null) {

                    mBinder.unlinkToDeath(mDeathRecipient, 0);

                }

                if (mStatusCallback != null) {

                    mStatusCallback.notifyUnavailable();

                }

            }

        }

    }
@@ -434,7 +444,16 @@ public class MmTelFeatureConnection { 
    }



    public void setBinder(IBinder binder) {

        synchronized (mLock) {

            mBinder = binder;

            try {

                if (mBinder != null) {

                    mBinder.linkToDeath(mDeathRecipient, 0);

                }

            } catch (RemoteException e) {

                // No need to do anything if the binder is already dead.

            }

        }

    }



    /**

tests/Android.mk

+3 −1
Original line number Diff line number Diff line
@@ -25,7 +25,9 @@ LOCAL_CERTIFICATE := platform 


LOCAL_MODULE_TAGS := tests



LOCAL_JAVA_LIBRARIES := ims-common android.test.runner

LOCAL_JAVA_LIBRARIES := ims-common \

        android.test.runner \

        android.test.base



LOCAL_STATIC_JAVA_LIBRARIES := \

        android-support-test \

tests/src/com/android/ims/ImsConfigTest.java

+4 −2
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ package com.android.ims; 


import android.support.test.runner.AndroidJUnit4;

import android.telephony.ims.aidl.IImsConfig;

import android.test.suitebuilder.annotation.SmallTest;



import org.junit.After;

import org.junit.Before;
@@ -42,7 +43,7 @@ public class ImsConfigTest extends ImsTestBase { 
    @Override

    public void setUp() throws Exception {

        super.setUp();

        mTestImsConfig = new ImsConfig(mMockImsConfigInterface, mContext);

        mTestImsConfig = new ImsConfig(mMockImsConfigInterface);

    }



    @After
@@ -53,10 +54,11 @@ public class ImsConfigTest extends ImsTestBase { 
    }



    @Test

    @SmallTest

    public void testImsConfigGetProvisionedValue() throws Exception {

        int testItem = 0;



        mTestImsConfig.getProvisionedValue(testItem);

        mTestImsConfig.getConfigInt(testItem);



        verify(mMockImsConfigInterface).getConfigInt(eq(testItem));

    }