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/*
* 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 android.app;
import android.annotation.SystemApi;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.pm.InstantAppResolveInfo;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.IRemoteCallback;
import android.os.Looper;
import android.os.Message;
import android.os.RemoteException;
import android.util.Log;
import android.util.Slog;
import com.android.internal.os.SomeArgs;
import java.util.Arrays;
import java.util.List;
/**
* Base class for implementing the resolver service.
* @hide
*/
@SystemApi
public abstract class InstantAppResolverService extends Service {
private static final boolean DEBUG_EPHEMERAL = Build.IS_DEBUGGABLE;
private static final String TAG = "PackageManager";
/** @hide */
public static final String EXTRA_RESOLVE_INFO = "android.app.extra.RESOLVE_INFO";
/** @hide */
public static final String EXTRA_SEQUENCE = "android.app.extra.SEQUENCE";
Handler mHandler;
/**
* Called to retrieve resolve info for instant applications.
*
* @param digestPrefix The hash prefix of the instant app's domain.
*/
public void onGetInstantAppResolveInfo(
int digestPrefix[], String token, InstantAppResolutionCallback callback) {
throw new IllegalStateException("Must define");
}
/**
* Called to retrieve intent filters for instant applications.
*
* @param digestPrefix The hash prefix of the instant app's domain.
*/
public void onGetInstantAppIntentFilter(
int digestPrefix[], String token, InstantAppResolutionCallback callback) {
throw new IllegalStateException("Must define");
}
/**
* Returns a {@link Looper} to perform service operations on.
*/
Looper getLooper() {
return getBaseContext().getMainLooper();
}
@Override
public final void attachBaseContext(Context base) {
super.attachBaseContext(base);
mHandler = new ServiceHandler(getLooper());
}
@Override
public final IBinder onBind(Intent intent) {
return new IInstantAppResolver.Stub() {
@Override
public void getInstantAppResolveInfoList(
int digestPrefix[], String token, int sequence, IRemoteCallback callback) {
if (DEBUG_EPHEMERAL) {
Slog.v(TAG, "[" + token + "] Phase1 called; posting");
}
final SomeArgs args = SomeArgs.obtain();
args.arg1 = callback;
args.arg2 = digestPrefix;
args.arg3 = token;
mHandler.obtainMessage(
ServiceHandler.MSG_GET_INSTANT_APP_RESOLVE_INFO, sequence, 0, args)
.sendToTarget();
}
@Override
public void getInstantAppIntentFilterList(
int digestPrefix[], String token, String hostName, IRemoteCallback callback) {
if (DEBUG_EPHEMERAL) {
Slog.v(TAG, "[" + token + "] Phase2 called; posting");
}
final SomeArgs args = SomeArgs.obtain();
args.arg1 = callback;
args.arg2 = digestPrefix;
args.arg3 = token;
args.arg4 = hostName;
mHandler.obtainMessage(
ServiceHandler.MSG_GET_INSTANT_APP_INTENT_FILTER, callback).sendToTarget();
}
};
}
/**
* Callback to post results from instant app resolution.
*/
public static final class InstantAppResolutionCallback {
private final IRemoteCallback mCallback;
private final int mSequence;
InstantAppResolutionCallback(int sequence, IRemoteCallback callback) {
mCallback = callback;
mSequence = sequence;
}
public void onInstantAppResolveInfo(List<InstantAppResolveInfo> resolveInfo) {
final Bundle data = new Bundle();
data.putParcelableList(EXTRA_RESOLVE_INFO, resolveInfo);
data.putInt(EXTRA_SEQUENCE, mSequence);
try {
mCallback.sendResult(data);
} catch (RemoteException e) {
}
}
}
@Deprecated
void _onGetInstantAppResolveInfo(int[] digestPrefix, String token,
InstantAppResolutionCallback callback) {
if (DEBUG_EPHEMERAL) {
Slog.d(TAG, "[" + token + "] Phase1 request;"
+ " prefix: " + Arrays.toString(digestPrefix));
}
onGetInstantAppResolveInfo(digestPrefix, token, callback);
}
@Deprecated
void _onGetInstantAppIntentFilter(int digestPrefix[], String token, String hostName,
InstantAppResolutionCallback callback) {
if (DEBUG_EPHEMERAL) {
Slog.d(TAG, "[" + token + "] Phase2 request;"
+ " prefix: " + Arrays.toString(digestPrefix));
}
onGetInstantAppIntentFilter(digestPrefix, token, callback);
}
private final class ServiceHandler extends Handler {
public static final int MSG_GET_INSTANT_APP_RESOLVE_INFO = 1;
public static final int MSG_GET_INSTANT_APP_INTENT_FILTER = 2;
public ServiceHandler(Looper looper) {
super(looper, null /*callback*/, true /*async*/);
}
@Override
@SuppressWarnings("unchecked")
public void handleMessage(Message message) {
final int action = message.what;
switch (action) {
case MSG_GET_INSTANT_APP_RESOLVE_INFO: {
final SomeArgs args = (SomeArgs) message.obj;
final IRemoteCallback callback = (IRemoteCallback) args.arg1;
final int[] digestPrefix = (int[]) args.arg2;
final String token = (String) args.arg3;
final int sequence = message.arg1;
_onGetInstantAppResolveInfo(
digestPrefix, token,
new InstantAppResolutionCallback(sequence, callback));
} break;
case MSG_GET_INSTANT_APP_INTENT_FILTER: {
final SomeArgs args = (SomeArgs) message.obj;
final IRemoteCallback callback = (IRemoteCallback) args.arg1;
final int[] digestPrefix = (int[]) args.arg2;
final String token = (String) args.arg3;
final String hostName = (String) args.arg4;
_onGetInstantAppIntentFilter(
digestPrefix, token, hostName,
new InstantAppResolutionCallback(-1 /*sequence*/, callback));
} break;
default: {
throw new IllegalArgumentException("Unknown message: " + action);
}
}
}
}
}
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