| /* |
| * Copyright (C) 2015 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.car.pm; |
| |
| import android.car.content.pm.CarAppBlockingPolicy; |
| import android.car.content.pm.ICarAppBlockingPolicy; |
| import android.car.content.pm.ICarAppBlockingPolicySetter; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ServiceConnection; |
| import android.content.pm.ServiceInfo; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.util.Slog; |
| |
| import com.android.car.CarLog; |
| import com.android.internal.annotations.GuardedBy; |
| |
| public class AppBlockingPolicyProxy implements ServiceConnection { |
| |
| private static final String TAG = CarLog.tagFor(AppBlockingPolicyProxy.class); |
| |
| private final CarPackageManagerService mService; |
| private final Context mContext; |
| private final ServiceInfo mServiceInfo; |
| private final ICarAppBlockingPolicySetterImpl mSetter; |
| private final Object mLock = new Object(); |
| |
| @GuardedBy("mLock") |
| private ICarAppBlockingPolicy mPolicyService; |
| |
| /** |
| * policy not set within this time after binding will be treated as failure and will be |
| * ignored. |
| */ |
| private static final long TIMEOUT_MS = 5000; |
| private static final int MAX_CRASH_RETRY = 2; |
| @GuardedBy("mLock") |
| private int mCrashCount; |
| @GuardedBy("mLock") |
| private boolean mBound; |
| |
| private final Handler mHandler; |
| private final Runnable mTimeoutRunnable = new Runnable() { |
| @Override |
| public void run() { |
| Slog.w(TAG, "Timeout for policy setting for service:" + mServiceInfo); |
| disconnect(); |
| mService.onPolicyConnectionFailure(AppBlockingPolicyProxy.this); |
| } |
| }; |
| |
| public AppBlockingPolicyProxy(CarPackageManagerService service, Context context, |
| ServiceInfo serviceInfo) { |
| mService = service; |
| mContext = context; |
| mServiceInfo = serviceInfo; |
| mSetter = new ICarAppBlockingPolicySetterImpl(); |
| mHandler = new Handler(mService.getLooper()); |
| } |
| |
| public String getPackageName() { |
| return mServiceInfo.packageName; |
| } |
| |
| public void connect() { |
| Intent intent = new Intent(); |
| intent.setComponent(mServiceInfo.getComponentName()); |
| mContext.bindServiceAsUser(intent, this, Context.BIND_AUTO_CREATE | Context.BIND_IMPORTANT, |
| UserHandle.CURRENT_OR_SELF); |
| synchronized (mLock) { |
| mBound = true; |
| } |
| mHandler.postDelayed(mTimeoutRunnable, TIMEOUT_MS); |
| } |
| |
| public void disconnect() { |
| synchronized (mLock) { |
| if (!mBound) { |
| return; |
| } |
| mBound = false; |
| mPolicyService = null; |
| } |
| mHandler.removeCallbacks(mTimeoutRunnable); |
| try { |
| mContext.unbindService(this); |
| } catch (IllegalArgumentException e) { |
| Slog.w(TAG, "unbind", e); |
| } |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| ICarAppBlockingPolicy policy = null; |
| boolean failed = false; |
| synchronized (mLock) { |
| mPolicyService = ICarAppBlockingPolicy.Stub.asInterface(service); |
| policy = mPolicyService; |
| if (policy == null) { |
| failed = true; |
| } |
| } |
| if (failed) { |
| Slog.w(TAG, "Policy service connected with null binder:" + name); |
| mService.onPolicyConnectionFailure(this); |
| return; |
| } |
| try { |
| policy.setAppBlockingPolicySetter(mSetter); |
| } catch (RemoteException e) { |
| // let retry handle this |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| boolean failed = false; |
| synchronized (mLock) { |
| mCrashCount++; |
| if (mCrashCount > MAX_CRASH_RETRY) { |
| mPolicyService = null; |
| failed = true; |
| } |
| } |
| if (failed) { |
| Slog.w(TAG, "Policy service keep crashing, giving up:" + name); |
| mService.onPolicyConnectionFailure(this); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "AppBlockingPolicyProxy [mServiceInfo=" + mServiceInfo + ", mCrashCount=" |
| + mCrashCount + "]"; |
| } |
| |
| private class ICarAppBlockingPolicySetterImpl extends ICarAppBlockingPolicySetter.Stub { |
| |
| @Override |
| public void setAppBlockingPolicy(CarAppBlockingPolicy policy) { |
| mHandler.removeCallbacks(mTimeoutRunnable); |
| if (policy == null) { |
| Slog.w(TAG, "setAppBlockingPolicy null policy from policy service:" + mServiceInfo); |
| } |
| mService.onPolicyConnectionAndSet(AppBlockingPolicyProxy.this, policy); |
| } |
| } |
| } |