| /* |
| * Copyright (C) 2018 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.stub; |
| |
| import android.annotation.IntDef; |
| import android.annotation.SystemApi; |
| import android.content.Context; |
| import android.os.RemoteCallbackList; |
| import android.os.RemoteException; |
| import android.telephony.ims.aidl.IImsConfig; |
| import android.telephony.ims.aidl.IImsConfigCallback; |
| import android.util.Log; |
| |
| import com.android.ims.ImsConfig; |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.ref.WeakReference; |
| import java.util.HashMap; |
| |
| /** |
| * Controls the modification of IMS specific configurations. For more information on the supported |
| * IMS configuration constants, see {@link ImsConfig}. |
| * |
| * The inner class {@link ImsConfigStub} implements methods of IImsConfig AIDL interface. |
| * The IImsConfig AIDL interface is called by ImsConfig, which may exist in many other processes. |
| * ImsConfigImpl access to the configuration parameters may be arbitrarily slow, especially in |
| * during initialization, or times when a lot of configuration parameters are being set/get |
| * (such as during boot up or SIM card change). By providing a cache in ImsConfigStub, we can speed |
| * up access to these configuration parameters, so a query to the ImsConfigImpl does not have to be |
| * performed every time. |
| * @hide |
| */ |
| @SystemApi |
| public class ImsConfigImplBase { |
| |
| private static final String TAG = "ImsConfigImplBase"; |
| |
| /** |
| * Implements the IImsConfig AIDL interface, which is called by potentially many processes |
| * in order to get/set configuration parameters. |
| * |
| * It holds an object of ImsConfigImplBase class which is usually extended by ImsConfigImpl |
| * with actual implementations from vendors. This class caches provisioned values from |
| * ImsConfigImpl layer because queries through ImsConfigImpl can be slow. When query goes in, |
| * it first checks cache layer. If missed, it will call the vendor implementation of |
| * ImsConfigImplBase API. |
| * and cache the return value if the set succeeds. |
| * |
| * Provides APIs to get/set the IMS service feature/capability/parameters. |
| * The config items include: |
| * 1) Items provisioned by the operator. |
| * 2) Items configured by user. Mainly service feature class. |
| * |
| * @hide |
| */ |
| @VisibleForTesting |
| static public class ImsConfigStub extends IImsConfig.Stub { |
| WeakReference<ImsConfigImplBase> mImsConfigImplBaseWeakReference; |
| private HashMap<Integer, Integer> mProvisionedIntValue = new HashMap<>(); |
| private HashMap<Integer, String> mProvisionedStringValue = new HashMap<>(); |
| |
| @VisibleForTesting |
| public ImsConfigStub(ImsConfigImplBase imsConfigImplBase) { |
| mImsConfigImplBaseWeakReference = |
| new WeakReference<ImsConfigImplBase>(imsConfigImplBase); |
| } |
| |
| @Override |
| public void addImsConfigCallback(IImsConfigCallback c) throws RemoteException { |
| getImsConfigImpl().addImsConfigCallback(c); |
| } |
| |
| @Override |
| public void removeImsConfigCallback(IImsConfigCallback c) throws RemoteException { |
| getImsConfigImpl().removeImsConfigCallback(c); |
| } |
| |
| /** |
| * Gets the value for ims service/capabilities parameters. It first checks its local cache, |
| * if missed, it will call ImsConfigImplBase.getConfigInt. |
| * Synchronous blocking call. |
| * |
| * @param item integer key |
| * @return value in Integer format or {@link #CONFIG_RESULT_UNKNOWN} if |
| * unavailable. |
| */ |
| @Override |
| public synchronized int getConfigInt(int item) throws RemoteException { |
| if (mProvisionedIntValue.containsKey(item)) { |
| return mProvisionedIntValue.get(item); |
| } else { |
| int retVal = getImsConfigImpl().getConfigInt(item); |
| if (retVal != ImsConfig.OperationStatusConstants.UNKNOWN) { |
| updateCachedValue(item, retVal, false); |
| } |
| return retVal; |
| } |
| } |
| |
| /** |
| * Gets the value for ims service/capabilities parameters. It first checks its local cache, |
| * if missed, it will call #ImsConfigImplBase.getConfigString. |
| * Synchronous blocking call. |
| * |
| * @param item integer key |
| * @return value in String format. |
| */ |
| @Override |
| public synchronized String getConfigString(int item) throws RemoteException { |
| if (mProvisionedIntValue.containsKey(item)) { |
| return mProvisionedStringValue.get(item); |
| } else { |
| String retVal = getImsConfigImpl().getConfigString(item); |
| if (retVal != null) { |
| updateCachedValue(item, retVal, false); |
| } |
| return retVal; |
| } |
| } |
| |
| /** |
| * Sets the value for IMS service/capabilities parameters by the operator device |
| * management entity. It sets the config item value in the provisioned storage |
| * from which the master value is derived, and write it into local cache. |
| * Synchronous blocking call. |
| * |
| * @param item integer key |
| * @param value in Integer format. |
| * @return the result of setting the configuration value, defined as either |
| * {@link #CONFIG_RESULT_FAILED} or {@link #CONFIG_RESULT_SUCCESS}. |
| */ |
| @Override |
| public synchronized int setConfigInt(int item, int value) throws RemoteException { |
| mProvisionedIntValue.remove(item); |
| int retVal = getImsConfigImpl().setConfig(item, value); |
| if (retVal == ImsConfig.OperationStatusConstants.SUCCESS) { |
| updateCachedValue(item, value, true); |
| } else { |
| Log.d(TAG, "Set provision value of " + item + |
| " to " + value + " failed with error code " + retVal); |
| } |
| |
| return retVal; |
| } |
| |
| /** |
| * Sets the value for IMS service/capabilities parameters by the operator device |
| * management entity. It sets the config item value in the provisioned storage |
| * from which the master value is derived, and write it into local cache. |
| * Synchronous blocking call. |
| * |
| * @param item as defined in com.android.ims.ImsConfig#ConfigConstants. |
| * @param value in String format. |
| * @return the result of setting the configuration value, defined as either |
| * {@link #CONFIG_RESULT_FAILED} or {@link #CONFIG_RESULT_SUCCESS}. |
| */ |
| @Override |
| public synchronized int setConfigString(int item, String value) |
| throws RemoteException { |
| mProvisionedStringValue.remove(item); |
| int retVal = getImsConfigImpl().setConfig(item, value); |
| if (retVal == ImsConfig.OperationStatusConstants.SUCCESS) { |
| updateCachedValue(item, value, true); |
| } |
| |
| return retVal; |
| } |
| |
| private ImsConfigImplBase getImsConfigImpl() throws RemoteException { |
| ImsConfigImplBase ref = mImsConfigImplBaseWeakReference.get(); |
| if (ref == null) { |
| throw new RemoteException("Fail to get ImsConfigImpl"); |
| } else { |
| return ref; |
| } |
| } |
| |
| private void notifyImsConfigChanged(int item, int value) throws RemoteException { |
| getImsConfigImpl().notifyConfigChanged(item, value); |
| } |
| |
| private void notifyImsConfigChanged(int item, String value) throws RemoteException { |
| getImsConfigImpl().notifyConfigChanged(item, value); |
| } |
| |
| protected synchronized void updateCachedValue(int item, int value, boolean notifyChange) |
| throws RemoteException { |
| mProvisionedIntValue.put(item, value); |
| if (notifyChange) { |
| notifyImsConfigChanged(item, value); |
| } |
| } |
| |
| protected synchronized void updateCachedValue(int item, String value, |
| boolean notifyChange) throws RemoteException { |
| mProvisionedStringValue.put(item, value); |
| if (notifyChange) { |
| notifyImsConfigChanged(item, value); |
| } |
| } |
| } |
| |
| /** |
| * The configuration requested resulted in an unknown result. This may happen if the |
| * IMS configurations are unavailable. |
| */ |
| public static final int CONFIG_RESULT_UNKNOWN = -1; |
| /** |
| * Setting the configuration value completed. |
| */ |
| public static final int CONFIG_RESULT_SUCCESS = 0; |
| /** |
| * Setting the configuration value failed. |
| */ |
| public static final int CONFIG_RESULT_FAILED = 1; |
| |
| /** |
| * @hide |
| */ |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef(prefix = "CONFIG_RESULT_", value = { |
| CONFIG_RESULT_SUCCESS, |
| CONFIG_RESULT_FAILED |
| }) |
| public @interface SetConfigResult {} |
| |
| private final RemoteCallbackList<IImsConfigCallback> mCallbacks = new RemoteCallbackList<>(); |
| ImsConfigStub mImsConfigStub; |
| |
| /** |
| * Used for compatibility between older versions of the ImsService. |
| * @hide |
| */ |
| public ImsConfigImplBase(Context context) { |
| mImsConfigStub = new ImsConfigStub(this); |
| } |
| |
| public ImsConfigImplBase() { |
| mImsConfigStub = new ImsConfigStub(this); |
| } |
| |
| /** |
| * Adds a {@link android.telephony.ims.ProvisioningManager.Callback} to the list of callbacks |
| * notified when a value in the configuration changes. |
| * @param c callback to add. |
| */ |
| private void addImsConfigCallback(IImsConfigCallback c) { |
| mCallbacks.register(c); |
| } |
| /** |
| * Removes a {@link android.telephony.ims.ProvisioningManager.Callback} to the list of callbacks |
| * notified when a value in the configuration changes. |
| * @param c callback to remove. |
| */ |
| private void removeImsConfigCallback(IImsConfigCallback c) { |
| mCallbacks.unregister(c); |
| } |
| |
| /** |
| * @param item |
| * @param value |
| */ |
| private final void notifyConfigChanged(int item, int value) { |
| // can be null in testing |
| if (mCallbacks == null) { |
| return; |
| } |
| mCallbacks.broadcast(c -> { |
| try { |
| c.onIntConfigChanged(item, value); |
| } catch (RemoteException e) { |
| Log.w(TAG, "notifyConfigChanged(int): dead binder in notify, skipping."); |
| } |
| }); |
| } |
| |
| private void notifyConfigChanged(int item, String value) { |
| // can be null in testing |
| if (mCallbacks == null) { |
| return; |
| } |
| mCallbacks.broadcast(c -> { |
| try { |
| c.onStringConfigChanged(item, value); |
| } catch (RemoteException e) { |
| Log.w(TAG, "notifyConfigChanged(string): dead binder in notify, skipping."); |
| } |
| }); |
| } |
| |
| /** |
| * @hide |
| */ |
| public IImsConfig getIImsConfig() { return mImsConfigStub; } |
| |
| /** |
| * Updates provisioning value and notifies the framework of the change. |
| * Doesn't call {@link #setConfig(int,int)} and assumes the result succeeded. |
| * This should only be used when the IMS implementer implicitly changed provisioned values. |
| * |
| * @param item an integer key. |
| * @param value in Integer format. |
| */ |
| public final void notifyProvisionedValueChanged(int item, int value) { |
| try { |
| mImsConfigStub.updateCachedValue(item, value, true); |
| } catch (RemoteException e) { |
| Log.w(TAG, "notifyProvisionedValueChanged(int): Framework connection is dead."); |
| } |
| } |
| |
| /** |
| * Updates provisioning value and notifies the framework of the change. |
| * Doesn't call {@link #setConfig(int,String)} and assumes the result succeeded. |
| * This should only be used when the IMS implementer implicitly changed provisioned values. |
| * |
| * @param item an integer key. |
| * @param value in String format. |
| */ |
| public final void notifyProvisionedValueChanged(int item, String value) { |
| try { |
| mImsConfigStub.updateCachedValue(item, value, true); |
| } catch (RemoteException e) { |
| Log.w(TAG, "notifyProvisionedValueChanged(string): Framework connection is dead."); |
| } |
| } |
| |
| /** |
| * Sets the configuration value for this ImsService. |
| * |
| * @param item an integer key. |
| * @param value an integer containing the configuration value. |
| * @return the result of setting the configuration value. |
| */ |
| public @SetConfigResult int setConfig(int item, int value) { |
| // Base Implementation - To be overridden. |
| return CONFIG_RESULT_FAILED; |
| } |
| |
| /** |
| * Sets the configuration value for this ImsService. |
| * |
| * @param item an integer key. |
| * @param value a String containing the new configuration value. |
| * @return Result of setting the configuration value. |
| */ |
| public @SetConfigResult int setConfig(int item, String value) { |
| // Base Implementation - To be overridden. |
| return CONFIG_RESULT_FAILED; |
| } |
| |
| /** |
| * Gets the currently stored value configuration value from the ImsService for {@code item}. |
| * |
| * @param item an integer key. |
| * @return configuration value, stored in integer format or {@link #CONFIG_RESULT_UNKNOWN} if |
| * unavailable. |
| */ |
| public int getConfigInt(int item) { |
| // Base Implementation - To be overridden. |
| return CONFIG_RESULT_UNKNOWN; |
| } |
| |
| /** |
| * Gets the currently stored value configuration value from the ImsService for {@code item}. |
| * |
| * @param item an integer key. |
| * @return configuration value, stored in String format or {@code null} if unavailable. |
| */ |
| public String getConfigString(int item) { |
| // Base Implementation - To be overridden. |
| return null; |
| } |
| } |