/*
* Copyright (C) 2014 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.voiceinteraction;
import android.app.ActivityManager;
import android.app.ActivityManagerNative;
import android.app.IActivityManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.pm.PackageManager;
import android.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.service.voice.IVoiceInteractionService;
import android.service.voice.IVoiceInteractionSession;
import android.service.voice.IVoiceInteractionSessionService;
import android.service.voice.VoiceInteractionService;
import android.service.voice.VoiceInteractionServiceInfo;
import android.util.Slog;
import android.view.IWindowManager;
import android.view.WindowManager;
import com.android.internal.app.IVoiceInteractor;
import java.io.FileDescriptor;
import java.io.PrintWriter;
class VoiceInteractionManagerServiceImpl {
final static String TAG = "VoiceInteractionServiceManager";
final boolean mValid;
final Context mContext;
final Handler mHandler;
final Object mLock;
final int mUser;
final ComponentName mComponent;
final IActivityManager mAm;
final VoiceInteractionServiceInfo mInfo;
final ComponentName mSessionComponentName;
final IWindowManager mIWindowManager;
boolean mBound = false;
IVoiceInteractionService mService;
SessionConnection mActiveSession;
final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(intent.getAction())) {
synchronized (mLock) {
if (mActiveSession != null && mActiveSession.mSession != null) {
try {
mActiveSession.mSession.closeSystemDialogs();
} catch (RemoteException e) {
}
}
}
}
}
};
final ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
synchronized (mLock) {
mService = IVoiceInteractionService.Stub.asInterface(service);
try {
mService.ready();
} catch (RemoteException e) {
}
}
}
@Override
public void onServiceDisconnected(ComponentName name) {
mService = null;
}
};
final class SessionConnection implements ServiceConnection {
final IBinder mToken = new Binder();
final Bundle mArgs;
boolean mBound;
IVoiceInteractionSessionService mService;
IVoiceInteractionSession mSession;
IVoiceInteractor mInteractor;
SessionConnection(Bundle args) {
mArgs = args;
Intent serviceIntent = new Intent(VoiceInteractionService.SERVICE_INTERFACE);
serviceIntent.setComponent(mSessionComponentName);
mBound = mContext.bindServiceAsUser(serviceIntent, this,
Context.BIND_AUTO_CREATE, new UserHandle(mUser));
if (mBound) {
try {
mIWindowManager.addWindowToken(mToken,
WindowManager.LayoutParams.TYPE_VOICE_INTERACTION);
} catch (RemoteException e) {
Slog.w(TAG, "Failed adding window token", e);
}
} else {
Slog.w(TAG, "Failed binding to voice interaction session service " + mComponent);
}
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
synchronized (mLock) {
mService = IVoiceInteractionSessionService.Stub.asInterface(service);
if (mActiveSession == this) {
try {
mService.newSession(mToken, mArgs);
} catch (RemoteException e) {
Slog.w(TAG, "Failed adding window token", e);
}
}
}
}
@Override
public void onServiceDisconnected(ComponentName name) {
mService = null;
}
public void cancel() {
if (mBound) {
if (mSession != null) {
try {
mSession.destroy();
} catch (RemoteException e) {
Slog.w(TAG, "Voice interation session already dead");
}
}
if (mSession != null) {
try {
mAm.finishVoiceTask(mSession);
} catch (RemoteException e) {
}
}
mContext.unbindService(this);
try {
mIWindowManager.removeWindowToken(mToken);
} catch (RemoteException e) {
Slog.w(TAG, "Failed removing window token", e);
}
mBound = false;
mService = null;
mSession = null;
mInteractor = null;
}
}
public void dump(String prefix, PrintWriter pw) {
pw.print(prefix); pw.print("mToken="); pw.println(mToken);
pw.print(prefix); pw.print("mArgs="); pw.println(mArgs);
pw.print(prefix); pw.print("mBound="); pw.println(mBound);
if (mBound) {
pw.print(prefix); pw.print("mService="); pw.println(mService);
pw.print(prefix); pw.print("mSession="); pw.println(mSession);
pw.print(prefix); pw.print("mInteractor="); pw.println(mInteractor);
}
}
};
VoiceInteractionManagerServiceImpl(Context context, Handler handler, Object lock,
int userHandle, ComponentName service) {
mContext = context;
mHandler = handler;
mLock = lock;
mUser = userHandle;
mComponent = service;
mAm = ActivityManagerNative.getDefault();
VoiceInteractionServiceInfo info;
try {
info = new VoiceInteractionServiceInfo(context.getPackageManager(), service);
} catch (PackageManager.NameNotFoundException e) {
Slog.w(TAG, "Voice interaction service not found: " + service);
mInfo = null;
mSessionComponentName = null;
mIWindowManager = null;
mValid = false;
return;
}
mInfo = info;
if (mInfo.getParseError() != null) {
Slog.w(TAG, "Bad voice interaction service: " + mInfo.getParseError());
mSessionComponentName = null;
mIWindowManager = null;
mValid = false;
return;
}
mValid = true;
mSessionComponentName = new ComponentName(service.getPackageName(),
mInfo.getSessionService());
mIWindowManager = IWindowManager.Stub.asInterface(
ServiceManager.getService(Context.WINDOW_SERVICE));
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
mContext.registerReceiver(mBroadcastReceiver, filter, null, handler);
}
public void startSessionLocked(int callingPid, int callingUid, Bundle args) {
if (mActiveSession != null) {
mActiveSession.cancel();
mActiveSession = null;
}
mActiveSession = new SessionConnection(args);
}
public boolean deliverNewSessionLocked(int callingPid, int callingUid, IBinder token,
IVoiceInteractionSession session, IVoiceInteractor interactor) {
if (mActiveSession == null || token != mActiveSession.mToken) {
Slog.w(TAG, "deliverNewSession does not match active session");
return false;
}
mActiveSession.mSession = session;
mActiveSession.mInteractor = interactor;
return true;
}
public int startVoiceActivityLocked(int callingPid, int callingUid, IBinder token,
Intent intent, String resolvedType) {
try {
if (mActiveSession == null || token != mActiveSession.mToken) {
Slog.w(TAG, "startVoiceActivity does not match active session");
return ActivityManager.START_CANCELED;
}
intent = new Intent(intent);
intent.addCategory(Intent.CATEGORY_VOICE);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
return mAm.startVoiceActivity(mComponent.getPackageName(), callingPid, callingUid,
intent, resolvedType, mActiveSession.mSession, mActiveSession.mInteractor,
0, null, null, mUser);
} catch (RemoteException e) {
throw new IllegalStateException("Unexpected remote error", e);
}
}
public void finishLocked(int callingPid, int callingUid, IBinder token) {
if (mActiveSession == null || token != mActiveSession.mToken) {
Slog.w(TAG, "finish does not match active session");
return;
}
mActiveSession.cancel();
mActiveSession = null;
}
public void dumpLocked(FileDescriptor fd, PrintWriter pw, String[] args) {
if (!mValid) {
pw.print(" NOT VALID: ");
if (mInfo == null) {
pw.println("no info");
} else {
pw.println(mInfo.getParseError());
}
return;
}
pw.print(" mComponent="); pw.println(mComponent.flattenToShortString());
pw.print(" Session service="); pw.println(mInfo.getSessionService());
pw.print(" Settings activity="); pw.println(mInfo.getSettingsActivity());
pw.print(" mBound="); pw.print(mBound); pw.print(" mService="); pw.println(mService);
if (mActiveSession != null) {
pw.println(" Active session:");
mActiveSession.dump(" ", pw);
}
}
void startLocked() {
Intent intent = new Intent(VoiceInteractionService.SERVICE_INTERFACE);
intent.setComponent(mComponent);
mBound = mContext.bindServiceAsUser(intent, mConnection,
Context.BIND_AUTO_CREATE, new UserHandle(mUser));
if (!mBound) {
Slog.w(TAG, "Failed binding to voice interaction service " + mComponent);
}
}
void shutdownLocked() {
try {
if (mService != null) {
mService.shutdown();
}
} catch (RemoteException e) {
Slog.w(TAG, "RemoteException in shutdown", e);
}
if (mBound) {
mContext.unbindService(mConnection);
mBound = false;
}
if (mValid) {
mContext.unregisterReceiver(mBroadcastReceiver);
}
}
void notifySoundModelsChangedLocked() {
if (mService == null) {
Slog.w(TAG, "Not bound to voice interaction service " + mComponent);
}
try {
mService.soundModelsChanged();
} catch (RemoteException e) {
Slog.w(TAG, "RemoteException while calling soundModelsChanged", e);
}
}
}
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