Merge "Handle cell broadcasts with new module" (66b9984d) · Commits · e / os / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/CellBroadcastServiceManager.java

0 → 100644

+171 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2019 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.internal.telephony;

		import android.annotation.NonNull;
		import android.content.ComponentName;
		import android.content.Context;
		import android.content.Intent;
		import android.content.ServiceConnection;
		import android.os.AsyncResult;
		import android.os.Handler;
		import android.os.IBinder;
		import android.os.Message;
		import android.os.RemoteException;
		import android.telephony.CellBroadcastService;
		import android.telephony.ICellBroadcastService;
		import android.util.LocalLog;
		import android.util.Log;

		import java.io.FileDescriptor;
		import java.io.PrintWriter;

		/**
		* Manages a single binding to the CellBroadcastService from the platform. In mSIM cases callers
		* should have one CellBroadcastServiceManager per phone, and the CellBroadcastServiceManager
		* will handle the single binding.
		*/
		public class CellBroadcastServiceManager {

		private static final String TAG = "CellBroadcastServiceManager";

		private String mCellBroadcastServicePackage;
		private static CellBroadcastServiceConnection sServiceConnection;
		private Handler mModuleCellBroadcastHandler = null;

		private Phone mPhone;
		private Context mContext;

		private final LocalLog mLocalLog = new LocalLog(100);

		/** New SMS cell broadcast received as an AsyncResult. */
		private static final int EVENT_NEW_SMS_CB = 0;
		private boolean mEnabled;

		public CellBroadcastServiceManager(Context context, Phone phone) {
		Log.d(TAG, "CellBroadcastServiceManager created for phone " + phone.getPhoneId());
		mContext = context;
		mPhone = phone;
		}

		/**
		* Send a CB message to the CellBroadcastServieManager's handler.
		* @param m the message
		*/
		public void sendMessageToHandler(Message m) {
		mModuleCellBroadcastHandler.sendMessage(m);
		}

		/**
		* Enable the CB module. The CellBroadcastService will be bound to and CB messages from the
		* RIL will be forwarded to the module.
		*/
		public void enable() {
		initCellBroadcastServiceModule();
		}

		/**
		* Disable the CB module. The manager's handler will no longer receive CB messages from the RIL.
		*/
		public void disable() {
		mEnabled = false;
		mPhone.mCi.unSetOnNewGsmBroadcastSms(mModuleCellBroadcastHandler);
		mContext.unbindService(sServiceConnection);
		}

		/**
		* The CellBroadcastServiceManager binds to an implementation of the CellBroadcastService
		* specified in com.android.internal.R.string.cellbroadcast_default_package (typically the
		* DefaultCellBroadcastService) and forwards cell broadcast messages to the service.
		*/
		private void initCellBroadcastServiceModule() {
		mEnabled = true;
		if (sServiceConnection == null) {
		sServiceConnection = new CellBroadcastServiceConnection();
		}
		mCellBroadcastServicePackage = getCellBroadcastServicePackage();
		if (mCellBroadcastServicePackage != null) {
		mModuleCellBroadcastHandler = new Handler() {
		@Override
		public void handleMessage(@NonNull Message msg) {
		if (!mEnabled) {
		Log.d(TAG, "CB module is disabled.");
		return;
		}
		try {
		ICellBroadcastService cellBroadcastService =
		ICellBroadcastService.Stub.asInterface(
		sServiceConnection.mService);
		cellBroadcastService.handleGsmCellBroadcastSms(mPhone.getPhoneId(),
		(byte[]) ((AsyncResult) msg.obj).result);
		} catch (RemoteException e) {
		Log.e(TAG, "Failed to connect to default app: "
		+ mCellBroadcastServicePackage + " err: " + e.toString());
		mLocalLog.log("Failed to connect to default app: "
		+ mCellBroadcastServicePackage + " err: " + e.toString());
		mContext.unbindService(sServiceConnection);
		sServiceConnection = null;
		}
		}
		};

		Intent intent = new Intent(CellBroadcastService.CELL_BROADCAST_SERVICE_INTERFACE);
		intent.setPackage(mCellBroadcastServicePackage);
		if (sServiceConnection.mService == null) {
		mContext.bindService(intent, sServiceConnection, Context.BIND_AUTO_CREATE);
		}
		mPhone.mCi.setOnNewGsmBroadcastSms(mModuleCellBroadcastHandler, EVENT_NEW_SMS_CB,
		null);
		} else {
		Log.e(TAG, "Unable to bind service; no cell broadcast service found");
		mLocalLog.log("Unable to bind service; no cell broadcast service found");
		}
		}

		/** Returns the package name of the cell broadcast service, or null if there is none. */
		private String getCellBroadcastServicePackage() {
		return mContext.getResources().getString(
		com.android.internal.R.string.cellbroadcast_default_package);
		}

		private class CellBroadcastServiceConnection implements ServiceConnection {
		IBinder mService;

		@Override
		public void onServiceConnected(ComponentName className, IBinder service) {
		Log.d(TAG, "connected to CellBroadcastService");
		this.mService = service;
		}

		@Override
		public void onServiceDisconnected(ComponentName arg0) {
		Log.d(TAG, "mICellBroadcastService has disconnected unexpectedly");
		this.mService = null;
		}
		}

		/**
		* Triggered with `adb shell dumpsys isms`
		*/
		public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
		pw.println("CellBroadcastServiceManager:");
		pw.println(" mEnabled=" + mEnabled);
		pw.println(" mCellBroadcastServicePackage=" + mCellBroadcastServicePackage);
		mLocalLog.dump(fd, pw, args);
		pw.flush();
		}
		}

src/java/com/android/internal/telephony/InboundSmsHandler.java

+0 −1

Original line number	Diff line number	Diff line
		@@ -36,7 +36,6 @@ import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.content.pm.IPackageManager;
		import android.content.pm.UserInfo;
		import android.database.Cursor;
		import android.database.SQLException;
		import android.net.Uri;

src/java/com/android/internal/telephony/SmsController.java

+3 −0

Original line number	Diff line number	Diff line
		@@ -551,6 +551,9 @@ public class SmsController extends ISmsImplBase {
		}
		}

		/**
		* Triggered by `adb shell dumpsys isms`
		*/
		@Override
		protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
		if (!checkDumpPermission(mContext, LOG_TAG, pw)) {

src/java/com/android/internal/telephony/gsm/GsmInboundSmsHandler.java

+145 −3

Original line number	Diff line number	Diff line
		@@ -17,10 +17,15 @@
		package com.android.internal.telephony.gsm;

		import android.app.Activity;
		import android.content.BroadcastReceiver;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.os.AsyncResult;
		import android.os.Message;
		import android.provider.Telephony.Sms.Intents;

		import com.android.internal.telephony.CellBroadcastServiceManager;
		import com.android.internal.telephony.CommandsInterface;
		import com.android.internal.telephony.InboundSmsHandler;
		import com.android.internal.telephony.Phone;
		@@ -31,24 +36,149 @@ import com.android.internal.telephony.SmsStorageMonitor;
		import com.android.internal.telephony.VisualVoicemailSmsFilter;
		import com.android.internal.telephony.uicc.UsimServiceTable;

		import java.io.FileDescriptor;
		import java.io.PrintWriter;

		/**
		* This class broadcasts incoming SMS messages to interested apps after storing them in
		* the SmsProvider "raw" table and ACKing them to the SMSC. After each message has been
		*/
		public class GsmInboundSmsHandler extends InboundSmsHandler {

		private static BroadcastReceiver sTestBroadcastReceiver;
		/** Handler for SMS-PP data download messages to UICC. */
		private final UsimDataDownloadHandler mDataDownloadHandler;

		// When TEST_MODE is on we allow the test intent to trigger an SMS CB alert
		private static boolean sEnableCbModule = false;
		private static final boolean TEST_MODE = true; //STOPSHIP if true
		private static final String TEST_ACTION = "com.android.internal.telephony.gsm"
		+ ".TEST_TRIGGER_CELL_BROADCAST";
		private static final String TOGGLE_CB_MODULE = "com.android.internal.telephony.gsm"
		+ ".TOGGLE_CB_MODULE";
		private CellBroadcastServiceManager mCellBroadcastServiceManager;

		/**
		* Create a new GSM inbound SMS handler.
		*/
		private GsmInboundSmsHandler(Context context, SmsStorageMonitor storageMonitor,
		Phone phone) {
		super("GsmInboundSmsHandler", context, storageMonitor, phone,
		GsmCellBroadcastHandler.makeGsmCellBroadcastHandler(context, phone));
		super("GsmInboundSmsHandler", context, storageMonitor, phone, null);
		phone.mCi.setOnNewGsmSms(getHandler(), EVENT_NEW_SMS, null);
		mDataDownloadHandler = new UsimDataDownloadHandler(phone.mCi, phone.getPhoneId());
		mCellBroadcastServiceManager = new CellBroadcastServiceManager(context, phone);
		if (sEnableCbModule) {
		mCellBroadcastServiceManager.enable();
		} else {
		mCellBroadcastHandler = GsmCellBroadcastHandler.makeGsmCellBroadcastHandler(context,
		phone);
		}

		if (TEST_MODE) {
		sTestBroadcastReceiver = new GsmCbTestBroadcastReceiver();
		IntentFilter filter = new IntentFilter();
		filter.addAction(TEST_ACTION);
		filter.addAction(TOGGLE_CB_MODULE);
		context.registerReceiver(sTestBroadcastReceiver, filter);
		}
		}


		/**
		* A broadcast receiver used for testing emergency cell broadcasts. To trigger test GSM cell
		* broadcasts with adb run e.g:
		*
		* adb shell am broadcast -a com.android.internal.telephony.gsm.TEST_TRIGGER_CELL_BROADCAST \
		* --es pdu_string 0000110011010D0A5BAE57CE770C531790E85C716CBF3044573065B9306757309707767 \
		* A751F30025F37304463FA308C306B5099304830664E0B30553044FF086C178C615E81FF09000000000000000 \
		* 0000000000000
		*
		* adb shell am broadcast -a com.android.internal.telephony.gsm.TEST_TRIGGER_CELL_BROADCAST \
		* --es pdu_string 0000110011010D0A5BAE57CE770C531790E85C716CBF3044573065B9306757309707767 \
		* A751F30025F37304463FA308C306B5099304830664E0B30553044FF086C178C615E81FF09000000000000000 \
		* 0000000000000 --ei phone_id 0
		*
		* adb shell am broadcast -a com.android.internal.telephony.gsm.TOGGLE_CB_MODULE
		*
		* adb shell am broadcast -a com.android.internal.telephony.gsm.TOGGLE_CB_MODULE -ez enable true
		*/
		private class GsmCbTestBroadcastReceiver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
		logd("Received test intent action=" + intent.getAction());
		if (intent.getAction() == TEST_ACTION) {
		byte[] smsPdu = intent.getByteArrayExtra("pdu");
		if (smsPdu == null) {
		String pduString = intent.getStringExtra("pdu_string");
		smsPdu = decodeHexString(pduString);
		}
		if (smsPdu == null) {
		log("No pdu or pdu_string extra, ignoring CB test intent");
		return;
		}

		// Return early if phone_id is explicilty included and does not match mPhone.
		// If phone_id extra is not included, continue.
		int phoneId = mPhone.getPhoneId();
		if (intent.getIntExtra("phone_id", phoneId) != phoneId) {
		return;
		}
		Message m = Message.obtain();
		AsyncResult.forMessage(m, smsPdu, null);
		if (sEnableCbModule) {
		mCellBroadcastServiceManager.sendMessageToHandler(m);
		} else {
		m.setWhat(GsmCellBroadcastHandler.EVENT_NEW_SMS_MESSAGE);
		mCellBroadcastHandler.sendMessage(m);
		}
		} else if (intent.getAction() == TOGGLE_CB_MODULE) {
		if (intent.hasExtra("enable")) {
		sEnableCbModule = intent.getBooleanExtra("enable", false);
		} else {
		sEnableCbModule = !sEnableCbModule;
		}
		if (sEnableCbModule) {
		log("enabling CB module");
		mPhone.mCi.unSetOnNewGsmBroadcastSms(mCellBroadcastHandler.getHandler());
		mCellBroadcastServiceManager.enable();
		} else {
		log("enabling legacy platform CB handling");
		mCellBroadcastServiceManager.disable();
		if (mCellBroadcastHandler == null) {
		mCellBroadcastHandler =
		GsmCellBroadcastHandler.makeGsmCellBroadcastHandler(context,
		mPhone);
		}
		mPhone.mCi.setOnNewGsmBroadcastSms(mCellBroadcastHandler.getHandler(),
		GsmCellBroadcastHandler.EVENT_NEW_SMS_MESSAGE, null);
		}
		}
		}
		}

		private byte[] decodeHexString(String hexString) {
		if (hexString == null \|\| hexString.length() % 2 == 1) {
		return null;
		}
		byte[] bytes = new byte[hexString.length() / 2];
		for (int i = 0; i < hexString.length(); i += 2) {
		bytes[i / 2] = hexToByte(hexString.substring(i, i + 2));
		}
		return bytes;
		}

		private byte hexToByte(String hexString) {
		int firstDigit = toDigit(hexString.charAt(0));
		int secondDigit = toDigit(hexString.charAt(1));
		return (byte) ((firstDigit << 4) + secondDigit);
		}

		private int toDigit(char hexChar) {
		int digit = Character.digit(hexChar, 16);
		if (digit == -1) {
		return 0;
		}
		return digit;
		}

		/**
		@@ -57,6 +187,7 @@ public class GsmInboundSmsHandler extends InboundSmsHandler {
		@Override
		protected void onQuitting() {
		mPhone.mCi.unSetOnNewGsmSms(getHandler());
		mCellBroadcastServiceManager.disable();
		mCellBroadcastHandler.dispose();

		if (DBG) log("unregistered for 3GPP SMS");
		@@ -75,6 +206,7 @@ public class GsmInboundSmsHandler extends InboundSmsHandler {

		/**
		* Return true if this handler is for 3GPP2 messages; false for 3GPP format.
		*
		* @return false (3GPP)
		*/
		@Override
		@@ -158,6 +290,7 @@ public class GsmInboundSmsHandler extends InboundSmsHandler {

		/**
		* Send an acknowledge message.
		*
		* @param success indicates that last message was successfully received.
		* @param result result code indicating any error
		* @param response callback message sent when operation completes.
		@@ -169,6 +302,7 @@ public class GsmInboundSmsHandler extends InboundSmsHandler {

		/**
		* Convert Android result code to 3GPP SMS failure cause.
		*
		* @param rc the Android SMS intent result value
		* @return 0 for success, or a 3GPP SMS failure cause value
		*/
		@@ -201,4 +335,12 @@ public class GsmInboundSmsHandler extends InboundSmsHandler {
		mMetrics.writeIncomingVoiceMailSms(mPhone.getPhoneId(),
		android.telephony.SmsMessage.FORMAT_3GPP);
		}

		@Override
		public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
		super.dump(fd, pw, args);
		if (mCellBroadcastServiceManager != null) {
		mCellBroadcastServiceManager.dump(fd, pw, args);
		}
		}
		}

tests/telephonytests/src/com/android/internal/telephony/gsm/GsmInboundSmsHandlerTest.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -770,8 +770,8 @@ public class GsmInboundSmsHandlerTest extends TelephonyTest {

		// verify that a broadcast receiver is registered for current user (user == null) based on
		// implementation in ContextFixture
		verify(mContext).registerReceiverAsUser(any(BroadcastReceiver.class), eq((UserHandle)null),
		any(IntentFilter.class), eq((String)null), eq((Handler)null));
		verify(mContext, times(2)).registerReceiverAsUser(any(BroadcastReceiver.class),
		eq((UserHandle)null), any(IntentFilter.class), eq((String)null), eq((Handler)null));

		// wait for ScanRawTableThread
		waitForMs(100);