mirror of https://github.com/YTVanced/VancedMicroG
128 lines
5.5 KiB
Java
128 lines
5.5 KiB
Java
/*
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* Copyright (C) 2013-2017 microG Project Team
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.gms.gcm;
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import android.Manifest;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.content.pm.ServiceInfo;
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import android.os.Build;
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import android.util.Base64;
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import android.util.Log;
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import androidx.legacy.content.WakefulBroadcastReceiver;
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import static org.microg.gms.gcm.GcmConstants.ACTION_C2DM_REGISTRATION;
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import static org.microg.gms.gcm.GcmConstants.ACTION_INSTANCE_ID;
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import static org.microg.gms.gcm.GcmConstants.EXTRA_FROM;
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import static org.microg.gms.gcm.GcmConstants.EXTRA_RAWDATA;
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import static org.microg.gms.gcm.GcmConstants.EXTRA_RAWDATA_BASE64;
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import static org.microg.gms.gcm.GcmConstants.GCMID_INSTANCE_ID;
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import static org.microg.gms.gcm.GcmConstants.GCMID_REFRESH;
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/**
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* <code>WakefulBroadcastReceiver</code> that receives GCM messages and delivers them to an
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* application-specific {@link com.google.android.gms.gcm.GcmListenerService} subclass.
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* <p/>
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* This receiver should be declared in your application's manifest file as follows:
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* <p/>
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* <pre>
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* <receiver
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* android:name="com.google.android.gms.gcm.GcmReceiver"
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* android:exported="true"
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* android:permission="com.google.android.c2dm.permission.SEND" >
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* <intent-filter>
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* <action android:name="com.google.android.c2dm.intent.RECEIVE" />
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* <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
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* <category android:name="YOUR_PACKAGE_NAME" />
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* </intent-filter>
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* </receiver></pre>
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* The <code>com.google.android.c2dm.permission.SEND</code> permission is held by Google Play
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* services. This prevents other apps from invoking the broadcast receiver.
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*/
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public class GcmReceiver extends WakefulBroadcastReceiver {
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private static final String TAG = "GcmReceiver";
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public void onReceive(Context context, Intent intent) {
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sanitizeIntent(context, intent);
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enforceIntentClassName(context, intent);
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sendIntent(context, intent);
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if (getResultCode() == 0) setResultCodeIfOrdered(-1);
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}
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private void sanitizeIntent(Context context, Intent intent) {
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intent.setComponent(null);
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intent.setPackage(context.getPackageName());
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
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intent.removeCategory(context.getPackageName());
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}
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String from = intent.getStringExtra(EXTRA_FROM);
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if (ACTION_C2DM_REGISTRATION.equals(intent.getAction()) || GCMID_INSTANCE_ID.equals(from) || GCMID_REFRESH.equals(from)) {
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intent.setAction(ACTION_INSTANCE_ID);
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}
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String base64encoded = intent.getStringExtra(EXTRA_RAWDATA_BASE64);
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if (base64encoded != null) {
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intent.putExtra(EXTRA_RAWDATA, Base64.decode(base64encoded, Base64.DEFAULT));
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intent.removeExtra(EXTRA_RAWDATA_BASE64);
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}
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}
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private void enforceIntentClassName(Context context, Intent intent) {
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ResolveInfo resolveInfo = context.getPackageManager().resolveService(intent, 0);
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if (resolveInfo == null || resolveInfo.serviceInfo == null) {
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Log.e(TAG, "Failed to resolve target intent service, skipping classname enforcement");
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return;
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}
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ServiceInfo serviceInfo = resolveInfo.serviceInfo;
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if (!context.getPackageName().equals(serviceInfo.packageName) || serviceInfo.name == null) {
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Log.e(TAG, "Error resolving target intent service, skipping classname enforcement. Resolved service was: " + serviceInfo.packageName + "/" + serviceInfo.name);
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return;
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}
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intent.setClassName(context, serviceInfo.name.startsWith(".") ? (context.getPackageName() + serviceInfo.name) : serviceInfo.name);
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}
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private void sendIntent(Context context, Intent intent) {
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setResultCodeIfOrdered(500);
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try {
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ComponentName startedComponent;
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if (context.checkCallingOrSelfPermission(Manifest.permission.WAKE_LOCK) == PackageManager.PERMISSION_GRANTED) {
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startedComponent = startWakefulService(context, intent);
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} else {
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Log.d(TAG, "Missing wake lock permission, service start may be delayed");
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startedComponent = context.startService(intent);
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}
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if (startedComponent == null) {
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Log.e(TAG, "Error while delivering the message: ServiceIntent not found.");
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setResultCodeIfOrdered(404);
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} else {
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setResultCodeIfOrdered(-1);
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}
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} catch (SecurityException e) {
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Log.e(TAG, "Error while delivering the message to the serviceIntent", e);
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setResultCodeIfOrdered(401);
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}
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}
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private void setResultCodeIfOrdered(int code) {
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if (isOrderedBroadcast()) {
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setResultCode(code);
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}
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}
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}
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