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android / platform / frameworks / opt / telephony / f6238229729089c914db1779d2fa5b3509207c73 / . / src / java / com / android / internal / telephony / InboundSmsHandler.java
blob: c3de17c0d25a332ae647be5854ee1fe26685587e [file] [log] [blame]
/*
* Copyright (C) 2013 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 static android.provider.Telephony.Sms.Intents.RESULT_SMS_DATABASE_ERROR;
import static android.provider.Telephony.Sms.Intents.RESULT_SMS_DISPATCH_FAILURE;
import static android.provider.Telephony.Sms.Intents.RESULT_SMS_INVALID_URI;
import static android.provider.Telephony.Sms.Intents.RESULT_SMS_NULL_MESSAGE;
import static android.provider.Telephony.Sms.Intents.RESULT_SMS_NULL_PDU;
import static android.service.carrier.CarrierMessagingService.RECEIVE_OPTIONS_SKIP_NOTIFY_WHEN_CREDENTIAL_PROTECTED_STORAGE_UNAVAILABLE;
import static android.telephony.TelephonyManager.PHONE_TYPE_CDMA;
import android.annotation.IntDef;
import android.annotation.Nullable;
import android.app.Activity;
import android.app.AppOpsManager;
import android.app.BroadcastOptions;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.compat.annotation.UnsupportedAppUsage;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.IPackageManager;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.database.SQLException;
import android.net.Uri;
import android.os.AsyncResult;
import android.os.Build;
import android.os.Bundle;
import android.os.Message;
import android.os.PowerManager;
import android.os.PowerWhitelistManager;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.os.UserManager;
import android.os.storage.StorageManager;
import android.provider.Telephony;
import android.provider.Telephony.Sms.Intents;
import android.service.carrier.CarrierMessagingService;
import android.telephony.SmsMessage;
import android.telephony.SubscriptionManager;
import android.telephony.TelephonyManager;
import android.util.LocalLog;
import android.util.Pair;
import com.android.internal.R;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.telephony.SmsConstants.MessageClass;
import com.android.internal.telephony.metrics.TelephonyMetrics;
import com.android.internal.telephony.util.NotificationChannelController;
import com.android.internal.telephony.util.TelephonyUtils;
import com.android.internal.util.HexDump;
import com.android.internal.util.IndentingPrintWriter;
import com.android.internal.util.State;
import com.android.internal.util.StateMachine;
import com.android.telephony.Rlog;
import java.io.ByteArrayOutputStream;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
/**
* 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 broadcast, its
* parts are removed from the raw table. If the device crashes after ACKing but before the broadcast
* completes, the pending messages will be rebroadcast on the next boot.
*
* <p>The state machine starts in {@link IdleState} state. When we receive a new SMS from the radio,
* the wakelock is acquired, then transition to {@link DeliveringState} state, where the message is
* saved to the raw table, then acknowledged to the modem which in turn acknowledges it to the SMSC.
*
* <p>After saving the SMS, if the message is complete (either single-part or the final segment of a
* multi-part SMS), we broadcast the completed PDUs as an ordered broadcast, then transition to
* {@link WaitingState} state to wait for the broadcast to complete. When the local
* {@link BroadcastReceiver} is called with the result, it sends {@link #EVENT_BROADCAST_COMPLETE}
* to the state machine, causing us to either broadcast the next pending message (if one has arrived
* while waiting for the broadcast to complete), or to transition back to the halted state after all
* messages are processed. Then the wakelock is released and we wait for the next SMS.
*/
public abstract class InboundSmsHandler extends StateMachine {
protected static final boolean DBG = true;
protected static final boolean VDBG = false; // STOPSHIP if true, logs user data
/** Query projection for checking for duplicate message segments. */
private static final String[] PDU_DELETED_FLAG_PROJECTION = {
"pdu",
"deleted"
};
/** Mapping from DB COLUMN to PDU_SEQUENCE_PORT PROJECTION index */
private static final Map<Integer, Integer> PDU_DELETED_FLAG_PROJECTION_INDEX_MAPPING =
new HashMap<Integer, Integer>() {{
put(PDU_COLUMN, 0);
put(DELETED_FLAG_COLUMN, 1);
}};
/** Query projection for combining concatenated message segments. */
private static final String[] PDU_SEQUENCE_PORT_PROJECTION = {
"pdu",
"sequence",
"destination_port",
"display_originating_addr",
"date"
};
/** Mapping from DB COLUMN to PDU_SEQUENCE_PORT PROJECTION index */
private static final Map<Integer, Integer> PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING =
new HashMap<Integer, Integer>() {{
put(PDU_COLUMN, 0);
put(SEQUENCE_COLUMN, 1);
put(DESTINATION_PORT_COLUMN, 2);
put(DISPLAY_ADDRESS_COLUMN, 3);
put(DATE_COLUMN, 4);
}};
public static final int PDU_COLUMN = 0;
public static final int SEQUENCE_COLUMN = 1;
public static final int DESTINATION_PORT_COLUMN = 2;
public static final int DATE_COLUMN = 3;
public static final int REFERENCE_NUMBER_COLUMN = 4;
public static final int COUNT_COLUMN = 5;
public static final int ADDRESS_COLUMN = 6;
public static final int ID_COLUMN = 7;
public static final int MESSAGE_BODY_COLUMN = 8;
public static final int DISPLAY_ADDRESS_COLUMN = 9;
public static final int DELETED_FLAG_COLUMN = 10;
public static final int SUBID_COLUMN = 11;
public static final String SELECT_BY_ID = "_id=?";
/** New SMS received as an AsyncResult. */
public static final int EVENT_NEW_SMS = 1;
/** Message type containing a {@link InboundSmsTracker} ready to broadcast to listeners. */
public static final int EVENT_BROADCAST_SMS = 2;
/** Message from resultReceiver notifying {@link WaitingState} of a completed broadcast. */
public static final int EVENT_BROADCAST_COMPLETE = 3;
/** Sent on exit from {@link WaitingState} to return to idle after sending all broadcasts. */
private static final int EVENT_RETURN_TO_IDLE = 4;
/** Release wakelock after {@link #mWakeLockTimeout} when returning to idle state. */
private static final int EVENT_RELEASE_WAKELOCK = 5;
/** Sent by {@link SmsBroadcastUndelivered} after cleaning the raw table. */
public static final int EVENT_START_ACCEPTING_SMS = 6;
/** New SMS received as an AsyncResult. */
public static final int EVENT_INJECT_SMS = 7;
/** Update the sms tracker */
public static final int EVENT_UPDATE_TRACKER = 8;
/** Wakelock release delay when returning to idle state. */
private static final int WAKELOCK_TIMEOUT = 3000;
/** Received SMS was not injected. */
public static final int SOURCE_NOT_INJECTED = 0;
/** Received SMS was received over IMS and injected. */
public static final int SOURCE_INJECTED_FROM_IMS = 1;
/** Received SMS was injected from source different than IMS. */
public static final int SOURCE_INJECTED_FROM_UNKNOWN = 2;
@Retention(RetentionPolicy.SOURCE)
@IntDef(prefix = {"SOURCE_"},
value = {
SOURCE_NOT_INJECTED,
SOURCE_INJECTED_FROM_IMS,
SOURCE_INJECTED_FROM_UNKNOWN
})
public @interface SmsSource {}
// The notitfication tag used when showing a notification. The combination of notification tag
// and notification id should be unique within the phone app.
private static final String NOTIFICATION_TAG = "InboundSmsHandler";
private static final int NOTIFICATION_ID_NEW_MESSAGE = 1;
/** URI for raw table of SMS provider. */
protected static final Uri sRawUri = Uri.withAppendedPath(Telephony.Sms.CONTENT_URI, "raw");
protected static final Uri sRawUriPermanentDelete =
Uri.withAppendedPath(Telephony.Sms.CONTENT_URI, "raw/permanentDelete");
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
protected final Context mContext;
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private final ContentResolver mResolver;
/** Special handler for WAP push messages. */
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private final WapPushOverSms mWapPush;
/** Wake lock to ensure device stays awake while dispatching the SMS intents. */
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private final PowerManager.WakeLock mWakeLock;
/** DefaultState throws an exception or logs an error for unhandled message types. */
private final DefaultState mDefaultState = new DefaultState();
/** Startup state. Waiting for {@link SmsBroadcastUndelivered} to complete. */
private final StartupState mStartupState = new StartupState();
/** Idle state. Waiting for messages to process. */
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private final IdleState mIdleState = new IdleState();
/** Delivering state. Saves the PDU in the raw table and acknowledges to SMSC. */
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private final DeliveringState mDeliveringState = new DeliveringState();
/** Broadcasting state. Waits for current broadcast to complete before delivering next. */
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private final WaitingState mWaitingState = new WaitingState();
/** Helper class to check whether storage is available for incoming messages. */
protected SmsStorageMonitor mStorageMonitor;
private final boolean mSmsReceiveDisabled;
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
protected Phone mPhone;
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private UserManager mUserManager;
protected TelephonyMetrics mMetrics = TelephonyMetrics.getInstance();
private LocalLog mLocalLog = new LocalLog(64);
private LocalLog mCarrierServiceLocalLog = new LocalLog(10);
PowerWhitelistManager mPowerWhitelistManager;
protected CellBroadcastServiceManager mCellBroadcastServiceManager;
// Delete permanently from raw table
private final int DELETE_PERMANENTLY = 1;
// Only mark deleted, but keep in db for message de-duping
private final int MARK_DELETED = 2;
private static String ACTION_OPEN_SMS_APP =
"com.android.internal.telephony.OPEN_DEFAULT_SMS_APP";
/** Timeout for releasing wakelock */
private int mWakeLockTimeout;
private List<SmsFilter> mSmsFilters;
/**
* Create a new SMS broadcast helper.
* @param name the class name for logging
* @param context the context of the phone app
* @param storageMonitor the SmsStorageMonitor to check for storage availability
*/
protected InboundSmsHandler(String name, Context context, SmsStorageMonitor storageMonitor,
Phone phone) {
super(name);
mContext = context;
mStorageMonitor = storageMonitor;
mPhone = phone;
mResolver = context.getContentResolver();
mWapPush = new WapPushOverSms(context);
boolean smsCapable = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_sms_capable);
mSmsReceiveDisabled = !TelephonyManager.from(mContext).getSmsReceiveCapableForPhone(
mPhone.getPhoneId(), smsCapable);
PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, name);
mWakeLock.acquire(); // wake lock released after we enter idle state
mUserManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
mPowerWhitelistManager =
(PowerWhitelistManager) mContext.getSystemService(Context.POWER_WHITELIST_MANAGER);
mCellBroadcastServiceManager = new CellBroadcastServiceManager(context, phone);
mSmsFilters = createDefaultSmsFilters();
addState(mDefaultState);
addState(mStartupState, mDefaultState);
addState(mIdleState, mDefaultState);
addState(mDeliveringState, mDefaultState);
addState(mWaitingState, mDeliveringState);
setInitialState(mStartupState);
if (DBG) log("created InboundSmsHandler");
}
/**
* Tell the state machine to quit after processing all messages.
*/
public void dispose() {
quit();
}
/**
* Dispose of the WAP push object and release the wakelock.
*/
@Override
protected void onQuitting() {
mWapPush.dispose();
mCellBroadcastServiceManager.disable();
while (mWakeLock.isHeld()) {
mWakeLock.release();
}
}
// CAF_MSIM Is this used anywhere ? if not remove it
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
public Phone getPhone() {
return mPhone;
}
@Override
protected String getWhatToString(int what) {
String whatString;
switch (what) {
case EVENT_NEW_SMS:
whatString = "EVENT_NEW_SMS";
break;
case EVENT_BROADCAST_SMS:
whatString = "EVENT_BROADCAST_SMS";
break;
case EVENT_BROADCAST_COMPLETE:
whatString = "EVENT_BROADCAST_COMPLETE";
break;
case EVENT_RETURN_TO_IDLE:
whatString = "EVENT_RETURN_TO_IDLE";
break;
case EVENT_RELEASE_WAKELOCK:
whatString = "EVENT_RELEASE_WAKELOCK";
break;
case EVENT_START_ACCEPTING_SMS:
whatString = "EVENT_START_ACCEPTING_SMS";
break;
case EVENT_INJECT_SMS:
whatString = "EVENT_INJECT_SMS";
break;
case EVENT_UPDATE_TRACKER:
whatString = "EVENT_UPDATE_TRACKER";
break;
default:
whatString = "UNKNOWN EVENT " + what;
}
return whatString;
}
/**
* This parent state throws an exception (for debug builds) or prints an error for unhandled
* message types.
*/
private class DefaultState extends State {
@Override
public boolean processMessage(Message msg) {
switch (msg.what) {
default: {
String errorText = "processMessage: unhandled message type "
+ getWhatToString(msg.what) + " currState="
+ getCurrentState().getName();
if (TelephonyUtils.IS_DEBUGGABLE) {
loge("---- Dumping InboundSmsHandler ----");
loge("Total records=" + getLogRecCount());
for (int i = Math.max(getLogRecSize() - 20, 0); i < getLogRecSize(); i++) {
// getLogRec(i).toString() will call the overridden getWhatToString
// method which has more information
loge("Rec[%d]: %s\n" + i + getLogRec(i).toString());
}
loge("---- Dumped InboundSmsHandler ----");
throw new RuntimeException(errorText);
} else {
loge(errorText);
}
break;
}
}
return HANDLED;
}
}
/**
* The Startup state waits for {@link SmsBroadcastUndelivered} to process the raw table and
* notify the state machine to broadcast any complete PDUs that might not have been broadcast.
*/
private class StartupState extends State {
@Override
public void enter() {
if (DBG) log("StartupState.enter: entering StartupState");
// Set wakelock timeout to 0 during startup, this will ensure that the wakelock is not
// held if there are no pending messages to be handled.
setWakeLockTimeout(0);
}
@Override
public boolean processMessage(Message msg) {
log("StartupState.processMessage: processing " + getWhatToString(msg.what));
switch (msg.what) {
case EVENT_NEW_SMS:
case EVENT_INJECT_SMS:
case EVENT_BROADCAST_SMS:
deferMessage(msg);
return HANDLED;
case EVENT_START_ACCEPTING_SMS:
transitionTo(mIdleState);
return HANDLED;
case EVENT_BROADCAST_COMPLETE:
case EVENT_RETURN_TO_IDLE:
case EVENT_RELEASE_WAKELOCK:
default:
// let DefaultState handle these unexpected message types
return NOT_HANDLED;
}
}
}
/**
* In the idle state the wakelock is released until a new SM arrives, then we transition
* to Delivering mode to handle it, acquiring the wakelock on exit.
*/
private class IdleState extends State {
@Override
public void enter() {
if (DBG) log("IdleState.enter: entering IdleState");
sendMessageDelayed(EVENT_RELEASE_WAKELOCK, getWakeLockTimeout());
}
@Override
public void exit() {
mWakeLock.acquire();
if (DBG) log("IdleState.exit: acquired wakelock, leaving IdleState");
}
@Override
public boolean processMessage(Message msg) {
if (DBG) log("IdleState.processMessage: processing " + getWhatToString(msg.what));
switch (msg.what) {
case EVENT_NEW_SMS:
case EVENT_INJECT_SMS:
case EVENT_BROADCAST_SMS:
deferMessage(msg);
transitionTo(mDeliveringState);
return HANDLED;
case EVENT_RELEASE_WAKELOCK:
mWakeLock.release();
if (DBG) {
if (mWakeLock.isHeld()) {
// this is okay as long as we call release() for every acquire()
log("IdleState.processMessage: EVENT_RELEASE_WAKELOCK: mWakeLock is "
+ "still held after release");
} else {
log("IdleState.processMessage: EVENT_RELEASE_WAKELOCK: mWakeLock "
+ "released");
}
}
return HANDLED;
case EVENT_RETURN_TO_IDLE:
// already in idle state; ignore
return HANDLED;
case EVENT_BROADCAST_COMPLETE:
case EVENT_START_ACCEPTING_SMS:
default:
// let DefaultState handle these unexpected message types
return NOT_HANDLED;
}
}
}
/**
* In the delivering state, the inbound SMS is processed and stored in the raw table.
* The message is acknowledged before we exit this state. If there is a message to broadcast,
* transition to {@link WaitingState} state to send the ordered broadcast and wait for the
* results. When all messages have been processed, the halting state will release the wakelock.
*/
private class DeliveringState extends State {
@Override
public void enter() {
if (DBG) log("DeliveringState.enter: entering DeliveringState");
}
@Override
public void exit() {
if (DBG) log("DeliveringState.exit: leaving DeliveringState");
}
@Override
public boolean processMessage(Message msg) {
if (DBG) log("DeliveringState.processMessage: processing " + getWhatToString(msg.what));
switch (msg.what) {
case EVENT_NEW_SMS:
// handle new SMS from RIL
handleNewSms((AsyncResult) msg.obj);
sendMessage(EVENT_RETURN_TO_IDLE);
return HANDLED;
case EVENT_INJECT_SMS:
// handle new injected SMS
handleInjectSms((AsyncResult) msg.obj, msg.arg1 == 1 /* isOverIms */);
sendMessage(EVENT_RETURN_TO_IDLE);
return HANDLED;
case EVENT_BROADCAST_SMS:
// if any broadcasts were sent, transition to waiting state
InboundSmsTracker inboundSmsTracker = (InboundSmsTracker) msg.obj;
if (processMessagePart(inboundSmsTracker)) {
sendMessage(obtainMessage(EVENT_UPDATE_TRACKER, msg.obj));
transitionTo(mWaitingState);
} else {
// if event is sent from SmsBroadcastUndelivered.broadcastSms(), and
// processMessagePart() returns false, the state machine will be stuck in
// DeliveringState until next message is received. Send message to
// transition to idle to avoid that so that wakelock can be released
log("DeliveringState.processMessage: EVENT_BROADCAST_SMS: No broadcast "
+ "sent. Return to IdleState");
sendMessage(EVENT_RETURN_TO_IDLE);
}
return HANDLED;
case EVENT_RETURN_TO_IDLE:
// return to idle after processing all other messages
transitionTo(mIdleState);
return HANDLED;
case EVENT_RELEASE_WAKELOCK:
mWakeLock.release(); // decrement wakelock from previous entry to Idle
if (!mWakeLock.isHeld()) {
// wakelock should still be held until 3 seconds after we enter Idle
loge("mWakeLock released while delivering/broadcasting!");
}
return HANDLED;
case EVENT_UPDATE_TRACKER:
logd("process tracker message in DeliveringState " + msg.arg1);
return HANDLED;
// we shouldn't get this message type in this state, log error and halt.
case EVENT_BROADCAST_COMPLETE:
case EVENT_START_ACCEPTING_SMS:
default:
logeWithLocalLog("Unhandled msg in delivering state, msg.what = "
+ getWhatToString(msg.what));
// let DefaultState handle these unexpected message types
return NOT_HANDLED;
}
}
}
/**
* The waiting state delegates handling of new SMS to parent {@link DeliveringState}, but
* defers handling of the {@link #EVENT_BROADCAST_SMS} phase until after the current
* result receiver sends {@link #EVENT_BROADCAST_COMPLETE}. Before transitioning to
* {@link DeliveringState}, {@link #EVENT_RETURN_TO_IDLE} is sent to transition to
* {@link IdleState} after any deferred {@link #EVENT_BROADCAST_SMS} messages are handled.
*/
private class WaitingState extends State {
private InboundSmsTracker mLastDeliveredSmsTracker;
@Override
public void enter() {
if (DBG) log("WaitingState.enter: entering WaitingState");
}
@Override
public void exit() {
if (DBG) log("WaitingState.exit: leaving WaitingState");
// Before moving to idle state, set wakelock timeout to WAKE_LOCK_TIMEOUT milliseconds
// to give any receivers time to take their own wake locks
setWakeLockTimeout(WAKELOCK_TIMEOUT);
mPhone.getIccSmsInterfaceManager().mDispatchersController.sendEmptyMessage(
SmsDispatchersController.EVENT_SMS_HANDLER_EXITING_WAITING_STATE);
}
@Override
public boolean processMessage(Message msg) {
if (DBG) log("WaitingState.processMessage: processing " + getWhatToString(msg.what));
switch (msg.what) {
case EVENT_BROADCAST_SMS:
// defer until the current broadcast completes
if (mLastDeliveredSmsTracker != null) {
String str = "Defer sms broadcast due to undelivered sms, "
+ " messageCount = " + mLastDeliveredSmsTracker.getMessageCount()
+ " destPort = " + mLastDeliveredSmsTracker.getDestPort()
+ " timestamp = " + mLastDeliveredSmsTracker.getTimestamp()
+ " currentTimestamp = " + System.currentTimeMillis();
logWithLocalLog(str, mLastDeliveredSmsTracker.getMessageId());
}
deferMessage(msg);
return HANDLED;
case EVENT_BROADCAST_COMPLETE:
mLastDeliveredSmsTracker = null;
// return to idle after handling all deferred messages
sendMessage(EVENT_RETURN_TO_IDLE);
transitionTo(mDeliveringState);
return HANDLED;
case EVENT_RETURN_TO_IDLE:
// not ready to return to idle; ignore
return HANDLED;
case EVENT_UPDATE_TRACKER:
mLastDeliveredSmsTracker = (InboundSmsTracker) msg.obj;
return HANDLED;
default:
// parent state handles the other message types
return NOT_HANDLED;
}
}
}
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private void handleNewSms(AsyncResult ar) {
if (ar.exception != null) {
loge("Exception processing incoming SMS: " + ar.exception);
return;
}
int result;
try {
SmsMessage sms = (SmsMessage) ar.result;
result = dispatchMessage(sms.mWrappedSmsMessage, SOURCE_NOT_INJECTED);
} catch (RuntimeException ex) {
loge("Exception dispatching message", ex);
result = RESULT_SMS_DISPATCH_FAILURE;
}
// RESULT_OK means that the SMS will be acknowledged by special handling,
// e.g. for SMS-PP data download. Any other result, we should ack here.
if (result != Activity.RESULT_OK) {
boolean handled = (result == Intents.RESULT_SMS_HANDLED);
notifyAndAcknowledgeLastIncomingSms(handled, result, null);
}
}
/**
* This method is called when a new SMS PDU is injected into application framework.
* @param ar is the AsyncResult that has the SMS PDU to be injected.
*/
@UnsupportedAppUsage
private void handleInjectSms(AsyncResult ar, boolean isOverIms) {
int result;
SmsDispatchersController.SmsInjectionCallback callback = null;
try {
callback = (SmsDispatchersController.SmsInjectionCallback) ar.userObj;
SmsMessage sms = (SmsMessage) ar.result;
if (sms == null) {
loge("Null injected sms");
result = RESULT_SMS_NULL_PDU;
} else {
@SmsSource int smsSource =
isOverIms ? SOURCE_INJECTED_FROM_IMS : SOURCE_INJECTED_FROM_UNKNOWN;
result = dispatchMessage(sms.mWrappedSmsMessage, smsSource);
}
} catch (RuntimeException ex) {
loge("Exception dispatching message", ex);
result = RESULT_SMS_DISPATCH_FAILURE;
}
if (callback != null) {
callback.onSmsInjectedResult(result);
}
}
/**
* Process an SMS message from the RIL, calling subclass methods to handle 3GPP and
* 3GPP2-specific message types.
*
* @param smsb the SmsMessageBase object from the RIL
* @param smsSource the source of the SMS message
* @return a result code from {@link android.provider.Telephony.Sms.Intents},
* or {@link Activity#RESULT_OK} for delayed acknowledgment to SMSC
*/
private int dispatchMessage(SmsMessageBase smsb, @SmsSource int smsSource) {
// If sms is null, there was a parsing error.
if (smsb == null) {
loge("dispatchSmsMessage: message is null");
return RESULT_SMS_NULL_MESSAGE;
}
if (mSmsReceiveDisabled) {
// Device doesn't support receiving SMS,
log("Received short message on device which doesn't support "
+ "receiving SMS. Ignored.");
return Intents.RESULT_SMS_HANDLED;
}
// onlyCore indicates if the device is in cryptkeeper
boolean onlyCore = false;
try {
onlyCore = IPackageManager.Stub.asInterface(ServiceManager.getService("package"))
.isOnlyCoreApps();
} catch (RemoteException e) {
}
if (onlyCore) {
// Device is unable to receive SMS in encrypted state
log("Received a short message in encrypted state. Rejecting.");
return Intents.RESULT_SMS_RECEIVED_WHILE_ENCRYPTED;
}
int result = dispatchMessageRadioSpecific(smsb, smsSource);
// In case of error, add to metrics. This is not required in case of success, as the
// data will be tracked when the message is processed (processMessagePart).
if (result != Intents.RESULT_SMS_HANDLED && result != Activity.RESULT_OK) {
mMetrics.writeIncomingSmsError(mPhone.getPhoneId(), smsSource, result);
mPhone.getSmsStats().onIncomingSmsError(is3gpp2(), smsSource, result);
}
return result;
}
/**
* Process voicemail notification, SMS-PP data download, CDMA CMAS, CDMA WAP push, and other
* 3GPP/3GPP2-specific messages. Regular SMS messages are handled by calling the shared
* {@link #dispatchNormalMessage} from this class.
*
* @param smsb the SmsMessageBase object from the RIL
* @param smsSource the source of the SMS message
* @return a result code from {@link android.provider.Telephony.Sms.Intents},
* or {@link Activity#RESULT_OK} for delayed acknowledgment to SMSC
*/
protected abstract int dispatchMessageRadioSpecific(SmsMessageBase smsb,
@SmsSource int smsSource);
/**
* Send an acknowledge message to the SMSC.
* @param success indicates that last message was successfully received.
* @param result result code indicating any error
* @param response callback message sent when operation completes.
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
protected abstract void acknowledgeLastIncomingSms(boolean success,
int result, Message response);
/**
* Notify interested apps if the framework has rejected an incoming SMS,
* and send an acknowledge message to the network.
* @param success indicates that last message was successfully received.
* @param result result code indicating any error
* @param response callback message sent when operation completes.
*/
private void notifyAndAcknowledgeLastIncomingSms(boolean success,
int result, Message response) {
if (!success) {
// broadcast SMS_REJECTED_ACTION intent
Intent intent = new Intent(Intents.SMS_REJECTED_ACTION);
intent.putExtra("result", result);
intent.putExtra("subId", mPhone.getSubId());
mContext.sendBroadcast(intent, android.Manifest.permission.RECEIVE_SMS);
}
acknowledgeLastIncomingSms(success, result, response);
}
/**
* Return true if this handler is for 3GPP2 messages; false for 3GPP format.
* @return true for the 3GPP2 handler; false for the 3GPP handler
*/
protected abstract boolean is3gpp2();
/**
* Dispatch a normal incoming SMS. This is called from {@link #dispatchMessageRadioSpecific}
* if no format-specific handling was required. Saves the PDU to the SMS provider raw table,
* creates an {@link InboundSmsTracker}, then sends it to the state machine as an
* {@link #EVENT_BROADCAST_SMS}. Returns {@link Intents#RESULT_SMS_HANDLED} or an error value.
*
* @param sms the message to dispatch
* @param smsSource the source of the SMS message
* @return {@link Intents#RESULT_SMS_HANDLED} if the message was accepted, or an error status
*/
@UnsupportedAppUsage
protected int dispatchNormalMessage(SmsMessageBase sms, @SmsSource int smsSource) {
SmsHeader smsHeader = sms.getUserDataHeader();
InboundSmsTracker tracker;
if ((smsHeader == null) || (smsHeader.concatRef == null)) {
// Message is not concatenated.
int destPort = -1;
if (smsHeader != null && smsHeader.portAddrs != null) {
// The message was sent to a port.
destPort = smsHeader.portAddrs.destPort;
if (DBG) log("destination port: " + destPort);
}
tracker = TelephonyComponentFactory.getInstance()
.inject(InboundSmsTracker.class.getName())
.makeInboundSmsTracker(mContext, sms.getPdu(),
sms.getTimestampMillis(), destPort, is3gpp2(), false,
sms.getOriginatingAddress(), sms.getDisplayOriginatingAddress(),
sms.getMessageBody(), sms.getMessageClass() == MessageClass.CLASS_0,
mPhone.getSubId(), smsSource);
} else {
// Create a tracker for this message segment.
SmsHeader.ConcatRef concatRef = smsHeader.concatRef;
SmsHeader.PortAddrs portAddrs = smsHeader.portAddrs;
int destPort = (portAddrs != null ? portAddrs.destPort : -1);
tracker = TelephonyComponentFactory.getInstance()
.inject(InboundSmsTracker.class.getName())
.makeInboundSmsTracker(mContext, sms.getPdu(),
sms.getTimestampMillis(), destPort, is3gpp2(),
sms.getOriginatingAddress(), sms.getDisplayOriginatingAddress(),
concatRef.refNumber, concatRef.seqNumber, concatRef.msgCount, false,
sms.getMessageBody(), sms.getMessageClass() == MessageClass.CLASS_0,
mPhone.getSubId(), smsSource);
}
if (VDBG) log("created tracker: " + tracker);
// de-duping is done only for text messages
// destPort = -1 indicates text messages, otherwise it's a data sms
return addTrackerToRawTableAndSendMessage(tracker,
tracker.getDestPort() == -1 /* de-dup if text message */);
}
/**
* Helper to add the tracker to the raw table and then send a message to broadcast it, if
* successful. Returns the SMS intent status to return to the SMSC.
* @param tracker the tracker to save to the raw table and then deliver
* @return {@link Intents#RESULT_SMS_HANDLED} or one of these errors:<br>
* <code>RESULT_SMS_UNSUPPORTED</code><br>
* <code>RESULT_SMS_DUPLICATED</code><br>
* <code>RESULT_SMS_DISPATCH_FAILURE</code><br>
* <code>RESULT_SMS_NULL_PDU</code><br>
* <code>RESULT_SMS_NULL_MESSAGE</code><br>
* <code>RESULT_SMS_RECEIVED_WHILE_ENCRYPTED</code><br>
* <code>RESULT_SMS_DATABASE_ERROR</code><br>
* <code>RESULT_SMS_INVALID_URI</code><br>
*/
protected int addTrackerToRawTableAndSendMessage(InboundSmsTracker tracker, boolean deDup) {
int result = addTrackerToRawTable(tracker, deDup);
switch(result) {
case Intents.RESULT_SMS_HANDLED:
sendMessage(EVENT_BROADCAST_SMS, tracker);
return Intents.RESULT_SMS_HANDLED;
case Intents.RESULT_SMS_DUPLICATED:
return Intents.RESULT_SMS_HANDLED;
default:
return result;
}
}
/**
* Process the inbound SMS segment. If the message is complete, send it as an ordered
* broadcast to interested receivers and return true. If the message is a segment of an
* incomplete multi-part SMS, return false.
* @param tracker the tracker containing the message segment to process
* @return true if an ordered broadcast was sent; false if waiting for more message segments
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private boolean processMessagePart(InboundSmsTracker tracker) {
int messageCount = tracker.getMessageCount();
byte[][] pdus;
long[] timestamps;
int destPort = tracker.getDestPort();
boolean block = false;
String address = tracker.getAddress();
// Do not process when the message count is invalid.
if (messageCount <= 0) {
loge("processMessagePart: returning false due to invalid message count "
+ messageCount, tracker.getMessageId());
return false;
}
if (messageCount == 1) {
// single-part message
pdus = new byte[][]{tracker.getPdu()};
timestamps = new long[]{tracker.getTimestamp()};
block = BlockChecker.isBlocked(mContext, tracker.getDisplayAddress(), null);
} else {
// multi-part message
Cursor cursor = null;
try {
// used by several query selection arguments
String refNumber = Integer.toString(tracker.getReferenceNumber());
String count = Integer.toString(tracker.getMessageCount());
// query for all segments and broadcast message if we have all the parts
String[] whereArgs = {address, refNumber, count};
cursor = mResolver.query(sRawUri, PDU_SEQUENCE_PORT_PROJECTION,
tracker.getQueryForSegments(), whereArgs, null);
int cursorCount = cursor.getCount();
if (cursorCount < messageCount) {
// Wait for the other message parts to arrive. It's also possible for the last
// segment to arrive before processing the EVENT_BROADCAST_SMS for one of the
// earlier segments. In that case, the broadcast will be sent as soon as all
// segments are in the table, and any later EVENT_BROADCAST_SMS messages will
// get a row count of 0 and return.
log("processMessagePart: returning false. Only " + cursorCount + " of "
+ messageCount + " segments " + " have arrived. refNumber: "
+ refNumber, tracker.getMessageId());
return false;
}
// All the parts are in place, deal with them
pdus = new byte[messageCount][];
timestamps = new long[messageCount];
while (cursor.moveToNext()) {
// subtract offset to convert sequence to 0-based array index
int index = cursor.getInt(PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING
.get(SEQUENCE_COLUMN)) - tracker.getIndexOffset();
// The invalid PDUs can be received and stored in the raw table. The range
// check ensures the process not crash even if the seqNumber in the
// UserDataHeader is invalid.
if (index >= pdus.length || index < 0) {
loge(String.format(
"processMessagePart: invalid seqNumber = %d, messageCount = %d",
index + tracker.getIndexOffset(),
messageCount),
tracker.getMessageId());
continue;
}
pdus[index] = HexDump.hexStringToByteArray(cursor.getString(
PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING.get(PDU_COLUMN)));
// Read the destination port from the first segment (needed for CDMA WAP PDU).
// It's not a bad idea to prefer the port from the first segment in other cases.
if (index == 0 && !cursor.isNull(PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING
.get(DESTINATION_PORT_COLUMN))) {
int port = cursor.getInt(PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING
.get(DESTINATION_PORT_COLUMN));
// strip format flags and convert to real port number, or -1
port = InboundSmsTracker.getRealDestPort(port);
if (port != -1) {
destPort = port;
}
}
timestamps[index] = cursor.getLong(
PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING.get(DATE_COLUMN));
// check if display address should be blocked or not
if (!block) {
// Depending on the nature of the gateway, the display origination address
// is either derived from the content of the SMS TP-OA field, or the TP-OA
// field contains a generic gateway address and the from address is added
// at the beginning in the message body. In that case only the first SMS
// (part of Multi-SMS) comes with the display originating address which
// could be used for block checking purpose.
block = BlockChecker.isBlocked(mContext,
cursor.getString(PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING
.get(DISPLAY_ADDRESS_COLUMN)), null);
}
}
log("processMessagePart: all " + messageCount + " segments "
+ " received. refNumber: " + refNumber, tracker.getMessageId());
} catch (SQLException e) {
loge("processMessagePart: Can't access multipart SMS database, id: "
+ tracker.getMessageId(), e);
return false;
} finally {
if (cursor != null) {
cursor.close();
}
}
}
final boolean isWapPush = (destPort == SmsHeader.PORT_WAP_PUSH);
String format = tracker.getFormat();
// Do not process null pdu(s). Check for that and return false in that case.
List<byte[]> pduList = Arrays.asList(pdus);
if (pduList.size() == 0 || pduList.contains(null)) {
String errorMsg = "processMessagePart: returning false due to "
+ (pduList.size() == 0 ? "pduList.size() == 0" : "pduList.contains(null)");
logeWithLocalLog(errorMsg, tracker.getMessageId());
mPhone.getSmsStats().onIncomingSmsError(
is3gpp2(), tracker.getSource(), RESULT_SMS_NULL_PDU);
return false;
}
ByteArrayOutputStream output = new ByteArrayOutputStream();
if (isWapPush) {
for (byte[] pdu : pdus) {
// 3GPP needs to extract the User Data from the PDU; 3GPP2 has already done this
if (format == SmsConstants.FORMAT_3GPP) {
SmsMessage msg = SmsMessage.createFromPdu(pdu, SmsConstants.FORMAT_3GPP);
if (msg != null) {
pdu = msg.getUserData();
} else {
loge("processMessagePart: SmsMessage.createFromPdu returned null",
tracker.getMessageId());
mMetrics.writeIncomingWapPush(mPhone.getPhoneId(), tracker.getSource(),
SmsConstants.FORMAT_3GPP, timestamps, false,
tracker.getMessageId());
mPhone.getSmsStats().onIncomingSmsWapPush(tracker.getSource(),
messageCount, RESULT_SMS_NULL_MESSAGE, tracker.getMessageId());
return false;
}
}
output.write(pdu, 0, pdu.length);
}
}
SmsBroadcastReceiver resultReceiver = new SmsBroadcastReceiver(tracker);
if (!mUserManager.isUserUnlocked()) {
log("processMessagePart: !isUserUnlocked; calling processMessagePartWithUserLocked. "
+ "Port: " + destPort, tracker.getMessageId());
return processMessagePartWithUserLocked(
tracker,
(isWapPush ? new byte[][] {output.toByteArray()} : pdus),
destPort,
resultReceiver);
}
if (isWapPush) {
int result = mWapPush.dispatchWapPdu(output.toByteArray(), resultReceiver,
this, address, tracker.getSubId(), tracker.getMessageId());
if (DBG) {
log("processMessagePart: dispatchWapPdu() returned " + result,
tracker.getMessageId());
}
// Add result of WAP-PUSH into metrics. RESULT_SMS_HANDLED indicates that the WAP-PUSH
// needs to be ignored, so treating it as a success case.
boolean wapPushResult =
result == Activity.RESULT_OK || result == Intents.RESULT_SMS_HANDLED;
mMetrics.writeIncomingWapPush(mPhone.getPhoneId(), tracker.getSource(),
format, timestamps, wapPushResult, tracker.getMessageId());
mPhone.getSmsStats().onIncomingSmsWapPush(tracker.getSource(), messageCount,
result, tracker.getMessageId());
// result is Activity.RESULT_OK if an ordered broadcast was sent
if (result == Activity.RESULT_OK) {
return true;
} else {
deleteFromRawTable(tracker.getDeleteWhere(), tracker.getDeleteWhereArgs(),
MARK_DELETED);
loge("processMessagePart: returning false as the ordered broadcast for WAP push "
+ "was not sent", tracker.getMessageId());
return false;
}
}
// All parts of SMS are received. Update metrics for incoming SMS.
// The metrics are generated before SMS filters are invoked.
// For messages composed by multiple parts, the metrics are generated considering the
// characteristics of the last one.
mMetrics.writeIncomingSmsSession(mPhone.getPhoneId(), tracker.getSource(),
format, timestamps, block, tracker.getMessageId());
mPhone.getSmsStats().onIncomingSmsSuccess(is3gpp2(), tracker.getSource(),
messageCount, block, tracker.getMessageId());
// Always invoke SMS filters, even if the number ends up being blocked, to prevent
// surprising bugs due to blocking numbers that happen to be used for visual voicemail SMS
// or other carrier system messages.
boolean filterInvoked = filterSms(
pdus, destPort, tracker, resultReceiver, true /* userUnlocked */, block);
if (!filterInvoked) {
// Block now if the filter wasn't invoked. Otherwise, it will be the responsibility of
// the filter to delete the SMS once processing completes.
if (block) {
deleteFromRawTable(tracker.getDeleteWhere(), tracker.getDeleteWhereArgs(),
DELETE_PERMANENTLY);
log("processMessagePart: returning false as the phone number is blocked",
tracker.getMessageId());
return false;
}
dispatchSmsDeliveryIntent(pdus, format, destPort, resultReceiver,
tracker.isClass0(), tracker.getSubId(), tracker.getMessageId());
}
return true;
}
/**
* Processes the message part while the credential-encrypted storage is still locked.
*
* <p>If the message is a regular MMS, show a new message notification. If the message is a
* SMS, ask the carrier app to filter it and show the new message notification if the carrier
* app asks to keep the message.
*
* @return true if an ordered broadcast was sent to the carrier app; false otherwise.
*/
private boolean processMessagePartWithUserLocked(InboundSmsTracker tracker,
byte[][] pdus, int destPort, SmsBroadcastReceiver resultReceiver) {
if (destPort == SmsHeader.PORT_WAP_PUSH && mWapPush.isWapPushForMms(pdus[0], this)) {
showNewMessageNotification();
return false;
}
if (destPort == -1) {
// This is a regular SMS - hand it to the carrier or system app for filtering.
boolean filterInvoked = filterSms(
pdus, destPort, tracker, resultReceiver, false /* userUnlocked */,
false /* block */);
if (filterInvoked) {
// filter invoked, wait for it to return the result.
return true;
} else {
// filter not invoked, show the notification and do nothing further.
showNewMessageNotification();
return false;
}
}
return false;
}
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private void showNewMessageNotification() {
// Do not show the notification on non-FBE devices.
if (!StorageManager.isFileEncryptedNativeOrEmulated()) {
return;
}
log("Show new message notification.");
PendingIntent intent = PendingIntent.getBroadcast(
mContext,
0,
new Intent(ACTION_OPEN_SMS_APP),
PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_IMMUTABLE);
Notification.Builder mBuilder = new Notification.Builder(mContext)
.setSmallIcon(com.android.internal.R.drawable.sym_action_chat)
.setAutoCancel(true)
.setVisibility(Notification.VISIBILITY_PUBLIC)
.setDefaults(Notification.DEFAULT_ALL)
.setContentTitle(mContext.getString(R.string.new_sms_notification_title))
.setContentText(mContext.getString(R.string.new_sms_notification_content))
.setContentIntent(intent)
.setChannelId(NotificationChannelController.CHANNEL_ID_SMS);
NotificationManager mNotificationManager =
(NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(
NOTIFICATION_TAG, NOTIFICATION_ID_NEW_MESSAGE, mBuilder.build());
}
static void cancelNewMessageNotification(Context context) {
NotificationManager mNotificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.cancel(InboundSmsHandler.NOTIFICATION_TAG,
InboundSmsHandler.NOTIFICATION_ID_NEW_MESSAGE);
}
/**
* Creates the default filters used to filter SMS messages.
*
* <p>Currently 3 filters exist: the carrier package, the VisualVoicemailSmsFilter, and the
* missed incoming call SMS filter.
*
* <p>Since the carrier filter is asynchronous, if a message passes through the carrier filter,
* the remaining filters will be applied in the callback.
*/
private List<SmsFilter> createDefaultSmsFilters() {
List<SmsFilter> smsFilters = new ArrayList<>(3);
smsFilters.add(
(pdus, destPort, tracker, resultReceiver, userUnlocked, block, remainingFilters)
-> {
CarrierServicesSmsFilterCallback filterCallback =
new CarrierServicesSmsFilterCallback(
pdus, destPort, tracker, tracker.getFormat(), resultReceiver,
userUnlocked,
tracker.isClass0(), tracker.getSubId(), tracker.getMessageId(),
block, remainingFilters);
CarrierServicesSmsFilter carrierServicesFilter = new CarrierServicesSmsFilter(
mContext, mPhone, pdus, destPort, tracker.getFormat(),
filterCallback, getName() + "::CarrierServicesSmsFilter",
mCarrierServiceLocalLog, tracker.getMessageId());
if (carrierServicesFilter.filter()) {
log("SMS is being handled by carrier service", tracker.getMessageId());
return true;
} else {
return false;
}
});
smsFilters.add(
(pdus, destPort, tracker, resultReceiver, userUnlocked, block, remainingFilters)
-> {
if (VisualVoicemailSmsFilter.filter(
mContext, pdus, tracker.getFormat(), destPort, tracker.getSubId())) {
logWithLocalLog("Visual voicemail SMS dropped", tracker.getMessageId());
dropFilteredSms(tracker, resultReceiver, block);
return true;
}
return false;
});
smsFilters.add(
(pdus, destPort, tracker, resultReceiver, userUnlocked, block, remainingFilters)
-> {
MissedIncomingCallSmsFilter missedIncomingCallSmsFilter =
new MissedIncomingCallSmsFilter(mPhone);
if (missedIncomingCallSmsFilter.filter(pdus, tracker.getFormat())) {
logWithLocalLog("Missed incoming call SMS received",
tracker.getMessageId());
dropFilteredSms(tracker, resultReceiver, block);
return true;
}
return false;
});
return smsFilters;
}
private void dropFilteredSms(
InboundSmsTracker tracker, SmsBroadcastReceiver resultReceiver, boolean block) {
if (block) {
deleteFromRawTable(
tracker.getDeleteWhere(), tracker.getDeleteWhereArgs(),
DELETE_PERMANENTLY);
sendMessage(EVENT_BROADCAST_COMPLETE);
} else {
dropSms(resultReceiver);
}
}
/**
* Filters the SMS.
*
* <p>Each filter in {@link #mSmsFilters} is invoked sequentially. If any filter returns true,
* this method returns true and subsequent filters are ignored.
*
* @return true if a filter is invoked and the SMS processing flow is diverted, false otherwise.
*/
private boolean filterSms(byte[][] pdus, int destPort,
InboundSmsTracker tracker, SmsBroadcastReceiver resultReceiver, boolean userUnlocked,
boolean block) {
return filterSms(pdus, destPort, tracker, resultReceiver, userUnlocked, block, mSmsFilters);
}
private static boolean filterSms(byte[][] pdus, int destPort,
InboundSmsTracker tracker, SmsBroadcastReceiver resultReceiver, boolean userUnlocked,
boolean block, List<SmsFilter> filters) {
ListIterator<SmsFilter> iterator = filters.listIterator();
while (iterator.hasNext()) {
SmsFilter smsFilter = iterator.next();
if (smsFilter.filterSms(pdus, destPort, tracker, resultReceiver, userUnlocked, block,
filters.subList(iterator.nextIndex(), filters.size()))) {
return true;
}
}
return false;
}
/**
* Dispatch the intent with the specified permission, appOp, and result receiver, using
* this state machine's handler thread to run the result receiver.
*
* @param intent the intent to broadcast
* @param permission receivers are required to have this permission
* @param appOp app op that is being performed when dispatching to a receiver
* @param user user to deliver the intent to
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
public void dispatchIntent(Intent intent, String permission, String appOp,
Bundle opts, BroadcastReceiver resultReceiver, UserHandle user, int subId) {
intent.addFlags(Intent.FLAG_RECEIVER_NO_ABORT);
final String action = intent.getAction();
SubscriptionManager.putPhoneIdAndSubIdExtra(intent, mPhone.getPhoneId());
// override the subId value in the intent with the values from tracker as they can be
// different, specifically if the message is coming from SmsBroadcastUndelivered
if (SubscriptionManager.isValidSubscriptionId(subId)) {
SubscriptionManager.putSubscriptionIdExtra(intent, subId);
}
if (user.equals(UserHandle.ALL)) {
// Get a list of currently started users.
int[] users = null;
final List<UserHandle> userHandles = mUserManager.getUserHandles(false);
final List<UserHandle> runningUserHandles = new ArrayList();
for (UserHandle handle : userHandles) {
if (mUserManager.isUserRunning(handle)) {
runningUserHandles.add(handle);
}
}
if (runningUserHandles.isEmpty()) {
users = new int[] {user.getIdentifier()};
} else {
users = new int[runningUserHandles.size()];
for (int i = 0; i < runningUserHandles.size(); i++) {
users[i] = runningUserHandles.get(i).getIdentifier();
}
}
// Deliver the broadcast only to those running users that are permitted
// by user policy.
for (int i = users.length - 1; i >= 0; i--) {
UserHandle targetUser = UserHandle.of(users[i]);
if (users[i] != UserHandle.SYSTEM.getIdentifier()) {
// Is the user not allowed to use SMS?
if (hasUserRestriction(UserManager.DISALLOW_SMS, targetUser)) {
continue;
}
// Skip unknown users and managed profiles as well
if (mUserManager.isManagedProfile(users[i])) {
continue;
}
}
// Only pass in the resultReceiver when the user SYSTEM is processed.
try {
mContext.createPackageContextAsUser(mContext.getPackageName(), 0, targetUser)
.sendOrderedBroadcast(intent, Activity.RESULT_OK, permission, appOp,
users[i] == UserHandle.SYSTEM.getIdentifier()
? resultReceiver : null, getHandler(),
null /* initialData */, null /* initialExtras */, opts);
} catch (PackageManager.NameNotFoundException ignored) {
}
}
} else {
try {
mContext.createPackageContextAsUser(mContext.getPackageName(), 0, user)
.sendOrderedBroadcast(intent, Activity.RESULT_OK, permission, appOp,
resultReceiver, getHandler(), null /* initialData */,
null /* initialExtras */, opts);
} catch (PackageManager.NameNotFoundException ignored) {
}
}
}
private boolean hasUserRestriction(String restrictionKey, UserHandle userHandle) {
final List<UserManager.EnforcingUser> sources = mUserManager
.getUserRestrictionSources(restrictionKey, userHandle);
return (sources != null && !sources.isEmpty());
}
/**
* Helper for {@link SmsBroadcastUndelivered} to delete an old message in the raw table.
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private void deleteFromRawTable(String deleteWhere, String[] deleteWhereArgs,
int deleteType) {
Uri uri = deleteType == DELETE_PERMANENTLY ? sRawUriPermanentDelete : sRawUri;
int rows = mResolver.delete(uri, deleteWhere, deleteWhereArgs);
if (rows == 0) {
loge("No rows were deleted from raw table!");
} else if (DBG) {
log("Deleted " + rows + " rows from raw table.");
}
}
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private Bundle handleSmsWhitelisting(ComponentName target, boolean bgActivityStartAllowed) {
String pkgName;
String reason;
if (target != null) {
pkgName = target.getPackageName();
reason = "sms-app";
} else {
pkgName = mContext.getPackageName();
reason = "sms-broadcast";
}
BroadcastOptions bopts = null;
Bundle bundle = null;
if (bgActivityStartAllowed) {
bopts = BroadcastOptions.makeBasic();
bopts.setBackgroundActivityStartsAllowed(true);
bundle = bopts.toBundle();
}
long duration = mPowerWhitelistManager.whitelistAppTemporarilyForEvent(
pkgName, PowerWhitelistManager.EVENT_SMS, reason);
if (bopts == null) bopts = BroadcastOptions.makeBasic();
bopts.setTemporaryAppWhitelistDuration(duration);
bundle = bopts.toBundle();
return bundle;
}
/**
* Creates and dispatches the intent to the default SMS app, appropriate port or via the {@link
* AppSmsManager}.
*
* @param pdus message pdus
* @param format the message format, typically "3gpp" or "3gpp2"
* @param destPort the destination port
* @param resultReceiver the receiver handling the delivery result
*/
private void dispatchSmsDeliveryIntent(byte[][] pdus, String format, int destPort,
SmsBroadcastReceiver resultReceiver, boolean isClass0, int subId, long messageId) {
Intent intent = new Intent();
intent.putExtra("pdus", pdus);
intent.putExtra("format", format);
if (messageId != 0L) {
intent.putExtra("messageId", messageId);
}
if (destPort == -1) {
intent.setAction(Intents.SMS_DELIVER_ACTION);
// Direct the intent to only the default SMS app. If we can't find a default SMS app
// then sent it to all broadcast receivers.
// We are deliberately delivering to the primary user's default SMS App.
ComponentName componentName = SmsApplication.getDefaultSmsApplication(mContext, true);
if (componentName != null) {
// Deliver SMS message only to this receiver.
intent.setComponent(componentName);
logWithLocalLog("Delivering SMS to: " + componentName.getPackageName()
+ " " + componentName.getClassName(), messageId);
} else {
intent.setComponent(null);
}
// Handle app specific sms messages.
AppSmsManager appManager = mPhone.getAppSmsManager();
if (appManager.handleSmsReceivedIntent(intent)) {
// The AppSmsManager handled this intent, we're done.
dropSms(resultReceiver);
return;
}
} else {
intent.setAction(Intents.DATA_SMS_RECEIVED_ACTION);
Uri uri = Uri.parse("sms://localhost:" + destPort);
intent.setData(uri);
intent.setComponent(null);
}
Bundle options = handleSmsWhitelisting(intent.getComponent(), isClass0);
dispatchIntent(intent, android.Manifest.permission.RECEIVE_SMS,
AppOpsManager.OPSTR_RECEIVE_SMS, options, resultReceiver, UserHandle.SYSTEM, subId);
}
/**
* Function to detect and handle duplicate messages. If the received message should replace an
* existing message in the raw db, this function deletes the existing message. If an existing
* message takes priority (for eg, existing message has already been broadcast), then this new
* message should be dropped.
* @return true if the message represented by the passed in tracker should be dropped,
* false otherwise
*/
private boolean checkAndHandleDuplicate(InboundSmsTracker tracker) throws SQLException {
Pair<String, String[]> exactMatchQuery = tracker.getExactMatchDupDetectQuery();
Cursor cursor = null;
try {
// Check for duplicate message segments
cursor = mResolver.query(sRawUri, PDU_DELETED_FLAG_PROJECTION, exactMatchQuery.first,
exactMatchQuery.second, null);
// moveToNext() returns false if no duplicates were found
if (cursor != null && cursor.moveToNext()) {
if (cursor.getCount() != 1) {
logeWithLocalLog("checkAndHandleDuplicate: Exact match query returned "
+ cursor.getCount() + " rows", tracker.getMessageId());
}
// if the exact matching row is marked deleted, that means this message has already
// been received and processed, and can be discarded as dup
if (cursor.getInt(
PDU_DELETED_FLAG_PROJECTION_INDEX_MAPPING.get(DELETED_FLAG_COLUMN)) == 1) {
logWithLocalLog("checkAndHandleDuplicate: Discarding duplicate "
+ "message/segment: " + tracker);
logDupPduMismatch(cursor, tracker);
return true; // reject message
} else {
// exact match duplicate is not marked deleted. If it is a multi-part segment,
// the code below for inexact match will take care of it. If it is a single
// part message, handle it here.
if (tracker.getMessageCount() == 1) {
// delete the old message segment permanently
deleteFromRawTable(exactMatchQuery.first, exactMatchQuery.second,
DELETE_PERMANENTLY);
logWithLocalLog("checkAndHandleDuplicate: Replacing duplicate message: "
+ tracker);
logDupPduMismatch(cursor, tracker);
}
}
}
} finally {
if (cursor != null) {
cursor.close();
}
}
// The code above does an exact match. Multi-part message segments need an additional check
// on top of that: if there is a message segment that conflicts this new one (may not be an
// exact match), replace the old message segment with this one.
if (tracker.getMessageCount() > 1) {
Pair<String, String[]> inexactMatchQuery = tracker.getInexactMatchDupDetectQuery();
cursor = null;
try {
// Check for duplicate message segments
cursor = mResolver.query(sRawUri, PDU_DELETED_FLAG_PROJECTION,
inexactMatchQuery.first, inexactMatchQuery.second, null);
// moveToNext() returns false if no duplicates were found
if (cursor != null && cursor.moveToNext()) {
if (cursor.getCount() != 1) {
logeWithLocalLog("checkAndHandleDuplicate: Inexact match query returned "
+ cursor.getCount() + " rows", tracker.getMessageId());
}
// delete the old message segment permanently
deleteFromRawTable(inexactMatchQuery.first, inexactMatchQuery.second,
DELETE_PERMANENTLY);
logWithLocalLog("checkAndHandleDuplicate: Replacing duplicate message segment: "
+ tracker);
logDupPduMismatch(cursor, tracker);
}
} finally {
if (cursor != null) {
cursor.close();
}
}
}
return false;
}
private void logDupPduMismatch(Cursor cursor, InboundSmsTracker tracker) {
String oldPduString = cursor.getString(
PDU_DELETED_FLAG_PROJECTION_INDEX_MAPPING.get(PDU_COLUMN));
byte[] pdu = tracker.getPdu();
byte[] oldPdu = HexDump.hexStringToByteArray(oldPduString);
if (!Arrays.equals(oldPdu, tracker.getPdu())) {
logeWithLocalLog("Warning: dup message PDU of length " + pdu.length
+ " is different from existing PDU of length " + oldPdu.length,
tracker.getMessageId());
}
}
/**
* Insert a message PDU into the raw table so we can acknowledge it immediately.
* If the device crashes before the broadcast to listeners completes, it will be delivered
* from the raw table on the next device boot. For single-part messages, the deleteWhere
* and deleteWhereArgs fields of the tracker will be set to delete the correct row after
* the ordered broadcast completes.
*
* @param tracker the tracker to add to the raw table
* @return true on success; false on failure to write to database
*/
private int addTrackerToRawTable(InboundSmsTracker tracker, boolean deDup) {
if (deDup) {
try {
if (checkAndHandleDuplicate(tracker)) {
return Intents.RESULT_SMS_DUPLICATED; // reject message
}
} catch (SQLException e) {
loge("addTrackerToRawTable: Can't access SMS database, id: "
+ tracker.getMessageId(), e);
return RESULT_SMS_DATABASE_ERROR; // reject message
}
} else {
log("addTrackerToRawTable: Skipped message de-duping logic", tracker.getMessageId());
}
String address = tracker.getAddress();
String refNumber = Integer.toString(tracker.getReferenceNumber());
String count = Integer.toString(tracker.getMessageCount());
ContentValues values = tracker.getContentValues();
if (VDBG) {
log("addTrackerToRawTable: adding content values to raw table: " + values.toString(),
tracker.getMessageId());
}
Uri newUri = mResolver.insert(sRawUri, values);
if (DBG) log("addTrackerToRawTable: URI of new row: " + newUri, tracker.getMessageId());
try {
long rowId = ContentUris.parseId(newUri);
if (tracker.getMessageCount() == 1) {
// set the delete selection args for single-part message
tracker.setDeleteWhere(SELECT_BY_ID, new String[]{Long.toString(rowId)});
} else {
// set the delete selection args for multi-part message
String[] deleteWhereArgs = {address, refNumber, count};
tracker.setDeleteWhere(tracker.getQueryForSegments(), deleteWhereArgs);
}
return Intents.RESULT_SMS_HANDLED;
} catch (Exception e) {
loge("addTrackerToRawTable: error parsing URI for new row: " + newUri + " id: "
+ tracker.getMessageId(), e);
return RESULT_SMS_INVALID_URI;
}
}
/**
* Returns whether the default message format for the current radio technology is 3GPP2.
* @return true if the radio technology uses 3GPP2 format by default, false for 3GPP format
*/
static boolean isCurrentFormat3gpp2() {
int activePhone = TelephonyManager.getDefault().getCurrentPhoneType();
return (PHONE_TYPE_CDMA == activePhone);
}
/**
* Handler for an {@link InboundSmsTracker} broadcast. Deletes PDUs from the raw table and
* logs the broadcast duration (as an error if the other receivers were especially slow).
*/
@VisibleForTesting
public final class SmsBroadcastReceiver extends BroadcastReceiver {
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private final String mDeleteWhere;
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private final String[] mDeleteWhereArgs;
private long mBroadcastTimeNano;
SmsBroadcastReceiver(InboundSmsTracker tracker) {
mDeleteWhere = tracker.getDeleteWhere();
mDeleteWhereArgs = tracker.getDeleteWhereArgs();
mBroadcastTimeNano = System.nanoTime();
}
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
int subId = intent.getIntExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX,
SubscriptionManager.INVALID_SUBSCRIPTION_ID);
if (action.equals(Intents.SMS_DELIVER_ACTION)) {
// Now dispatch the notification only intent
intent.setAction(Intents.SMS_RECEIVED_ACTION);
// Allow registered broadcast receivers to get this intent even
// when they are in the background.
intent.setComponent(null);
// All running users will be notified of the received sms.
Bundle options = handleSmsWhitelisting(null, false /* bgActivityStartAllowed */);
dispatchIntent(intent, android.Manifest.permission.RECEIVE_SMS,
AppOpsManager.OPSTR_RECEIVE_SMS,
options, this, UserHandle.ALL, subId);
} else if (action.equals(Intents.WAP_PUSH_DELIVER_ACTION)) {
// Now dispatch the notification only intent
intent.setAction(Intents.WAP_PUSH_RECEIVED_ACTION);
intent.setComponent(null);
// Only the primary user will receive notification of incoming mms.
// That app will do the actual downloading of the mms.
long duration = mPowerWhitelistManager.whitelistAppTemporarilyForEvent(
mContext.getPackageName(),
PowerWhitelistManager.EVENT_MMS,
"mms-broadcast");
BroadcastOptions bopts = BroadcastOptions.makeBasic();
bopts.setTemporaryAppWhitelistDuration(duration);
Bundle options = bopts.toBundle();
String mimeType = intent.getType();
dispatchIntent(intent, WapPushOverSms.getPermissionForType(mimeType),
WapPushOverSms.getAppOpsStringPermissionForIntent(mimeType), options, this,
UserHandle.SYSTEM, subId);
} else {
// Now that the intents have been deleted we can clean up the PDU data.
if (!Intents.DATA_SMS_RECEIVED_ACTION.equals(action)
&& !Intents.SMS_RECEIVED_ACTION.equals(action)
&& !Intents.DATA_SMS_RECEIVED_ACTION.equals(action)
&& !Intents.WAP_PUSH_RECEIVED_ACTION.equals(action)) {
loge("unexpected BroadcastReceiver action: " + action);
}
int rc = getResultCode();
if ((rc != Activity.RESULT_OK) && (rc != Intents.RESULT_SMS_HANDLED)) {
loge("a broadcast receiver set the result code to " + rc
+ ", deleting from raw table anyway!");
} else if (DBG) {
log("successful broadcast, deleting from raw table.");
}
deleteFromRawTable(mDeleteWhere, mDeleteWhereArgs, MARK_DELETED);
sendMessage(EVENT_BROADCAST_COMPLETE);
int durationMillis = (int) ((System.nanoTime() - mBroadcastTimeNano) / 1000000);
if (durationMillis >= 5000) {
loge("Slow ordered broadcast completion time: " + durationMillis + " ms");
} else if (DBG) {
log("ordered broadcast completed in: " + durationMillis + " ms");
}
}
}
}
/**
* Callback that handles filtering results by carrier services.
*/
private final class CarrierServicesSmsFilterCallback implements
CarrierServicesSmsFilter.CarrierServicesSmsFilterCallbackInterface {
private final byte[][] mPdus;
private final int mDestPort;
private final InboundSmsTracker mTracker;
private final String mSmsFormat;
private final SmsBroadcastReceiver mSmsBroadcastReceiver;
private final boolean mUserUnlocked;
private final boolean mIsClass0;
private final int mSubId;
private final long mMessageId;
private final boolean mBlock;
private final List<SmsFilter> mRemainingFilters;
CarrierServicesSmsFilterCallback(byte[][] pdus, int destPort, InboundSmsTracker tracker,
String smsFormat, SmsBroadcastReceiver smsBroadcastReceiver, boolean userUnlocked,
boolean isClass0, int subId, long messageId, boolean block,
List<SmsFilter> remainingFilters) {
mPdus = pdus;
mDestPort = destPort;
mTracker = tracker;
mSmsFormat = smsFormat;
mSmsBroadcastReceiver = smsBroadcastReceiver;
mUserUnlocked = userUnlocked;
mIsClass0 = isClass0;
mSubId = subId;
mMessageId = messageId;
mBlock = block;
mRemainingFilters = remainingFilters;
}
@Override
public void onFilterComplete(int result) {
log("onFilterComplete: result is " + result, mMessageId);
boolean carrierRequestedDrop =
(result & CarrierMessagingService.RECEIVE_OPTIONS_DROP) != 0;
if (carrierRequestedDrop) {
// Carrier app asked the platform to drop the SMS. Drop it from the database and
// complete processing.
dropFilteredSms(mTracker, mSmsBroadcastReceiver, mBlock);
return;
}
boolean filterInvoked = filterSms(mPdus, mDestPort, mTracker, mSmsBroadcastReceiver,
mUserUnlocked, mBlock, mRemainingFilters);
if (filterInvoked) {
// A remaining filter has assumed responsibility for further message processing.
return;
}
// Now that all filters have been invoked, drop the message if it is blocked.
// TODO(b/156910035): Remove mUserUnlocked once we stop showing the new message
// notification for blocked numbers.
if (mUserUnlocked && mBlock) {
log("onFilterComplete: dropping message as the sender is blocked",
mTracker.getMessageId());
dropFilteredSms(mTracker, mSmsBroadcastReceiver, mBlock);
return;
}
// Message matched no filters and is not blocked, so complete processing.
if (mUserUnlocked) {
dispatchSmsDeliveryIntent(
mPdus, mSmsFormat, mDestPort, mSmsBroadcastReceiver, mIsClass0, mSubId,
mMessageId);
} else {
// Don't do anything further, leave the message in the raw table if the
// credential-encrypted storage is still locked and show the new message
// notification if the message is visible to the user.
if (!isSkipNotifyFlagSet(result)) {
showNewMessageNotification();
}
sendMessage(EVENT_BROADCAST_COMPLETE);
}
}
}
private void dropSms(SmsBroadcastReceiver receiver) {
// Needs phone package permissions.
deleteFromRawTable(receiver.mDeleteWhere, receiver.mDeleteWhereArgs, MARK_DELETED);
sendMessage(EVENT_BROADCAST_COMPLETE);
}
/** Checks whether the flag to skip new message notification is set in the bitmask returned
* from the carrier app.
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
private boolean isSkipNotifyFlagSet(int callbackResult) {
return (callbackResult
& RECEIVE_OPTIONS_SKIP_NOTIFY_WHEN_CREDENTIAL_PROTECTED_STORAGE_UNAVAILABLE) > 0;
}
/**
* Log with debug level in logcat and LocalLog
* @param logMsg msg to log
*/
protected void logWithLocalLog(String logMsg) {
log(logMsg);
mLocalLog.log(logMsg);
}
/**
* Log with debug level in logcat and LocalLog
* @param logMsg msg to log
* @param id unique message id
*/
protected void logWithLocalLog(String logMsg, long id) {
log(logMsg, id);
mLocalLog.log(logMsg + ", id: " + id);
}
/**
* Log with error level in logcat and LocalLog
* @param logMsg msg to log
*/
protected void logeWithLocalLog(String logMsg) {
loge(logMsg);
mLocalLog.log(logMsg);
}
/**
* Log with error level in logcat and LocalLog
* @param logMsg msg to log
* @param id unique message id
*/
protected void logeWithLocalLog(String logMsg, long id) {
loge(logMsg, id);
mLocalLog.log(logMsg + ", id: " + id);
}
/**
* Log with debug level.
* @param s the string to log
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@Override
protected void log(String s) {
Rlog.d(getName(), s);
}
/**
* Log with debug level.
* @param s the string to log
* @param id unique message id
*/
protected void log(String s, long id) {
log(s + ", id: " + id);
}
/**
* Log with error level.
* @param s the string to log
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@Override
protected void loge(String s) {
Rlog.e(getName(), s);
}
/**
* Log with error level.
* @param s the string to log
* @param id unique message id
*/
protected void loge(String s, long id) {
loge(s + ", id: " + id);
}
/**
* Log with error level.
* @param s the string to log
* @param e is a Throwable which logs additional information.
*/
@Override
protected void loge(String s, Throwable e) {
Rlog.e(getName(), s, e);
}
/**
* Build up the SMS message body from the SmsMessage array of received SMS
*
* @param msgs The SmsMessage array of the received SMS
* @return The text message body
*/
private static String buildMessageBodyFromPdus(SmsMessage[] msgs) {
if (msgs.length == 1) {
// There is only one part, so grab the body directly.
return replaceFormFeeds(msgs[0].getDisplayMessageBody());
} else {
// Build up the body from the parts.
StringBuilder body = new StringBuilder();
for (SmsMessage msg: msgs) {
// getDisplayMessageBody() can NPE if mWrappedMessage inside is null.
body.append(msg.getDisplayMessageBody());
}
return replaceFormFeeds(body.toString());
}
}
@Override
public void dump(FileDescriptor fd, PrintWriter printWriter, String[] args) {
IndentingPrintWriter pw = new IndentingPrintWriter(printWriter, " ");
pw.println(getName() + " extends StateMachine:");
pw.increaseIndent();
super.dump(fd, pw, args);
if (mCellBroadcastServiceManager != null) {
mCellBroadcastServiceManager.dump(fd, pw, args);
}
pw.println("mLocalLog:");
pw.increaseIndent();
mLocalLog.dump(fd, pw, args);
pw.decreaseIndent();
pw.println("mCarrierServiceLocalLog:");
pw.increaseIndent();
mCarrierServiceLocalLog.dump(fd, pw, args);
pw.decreaseIndent();
pw.decreaseIndent();
}
// Some providers send formfeeds in their messages. Convert those formfeeds to newlines.
private static String replaceFormFeeds(String s) {
return s == null ? "" : s.replace('\f', '\n');
}
@VisibleForTesting
public PowerManager.WakeLock getWakeLock() {
return mWakeLock;
}
@VisibleForTesting
public int getWakeLockTimeout() {
return mWakeLockTimeout;
}
/**
* Sets the wakelock timeout to {@link timeOut} milliseconds
*/
private void setWakeLockTimeout(int timeOut) {
mWakeLockTimeout = timeOut;
}
/**
* Set the SMS filters used by {@link #filterSms} for testing purposes.
*
* @param smsFilters List of SMS filters, or null to restore the default filters.
*/
@VisibleForTesting
public void setSmsFiltersForTesting(@Nullable List<SmsFilter> smsFilters) {
if (smsFilters == null) {
mSmsFilters = createDefaultSmsFilters();
} else {
mSmsFilters = smsFilters;
}
}
/**
* Handler for the broadcast sent when the new message notification is clicked. It launches the
* default SMS app.
*/
private static class NewMessageNotificationActionReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (ACTION_OPEN_SMS_APP.equals(intent.getAction())) {
// do nothing if the user had not unlocked the device yet
UserManager userManager =
(UserManager) context.getSystemService(Context.USER_SERVICE);
if (userManager.isUserUnlocked()) {
context.startActivity(context.getPackageManager().getLaunchIntentForPackage(
Telephony.Sms.getDefaultSmsPackage(context)));
}
}
}
}
protected 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;
}
/**
* Registers the broadcast receiver to launch the default SMS app when the user clicks the
* new message notification.
*/
static void registerNewMessageNotificationActionHandler(Context context) {
IntentFilter userFilter = new IntentFilter();
userFilter.addAction(ACTION_OPEN_SMS_APP);
context.registerReceiver(new NewMessageNotificationActionReceiver(), userFilter);
}
protected abstract class CbTestBroadcastReceiver extends BroadcastReceiver {
protected abstract void handleTestAction(Intent intent);
protected final String mTestAction;
public CbTestBroadcastReceiver(String testAction) {
mTestAction = testAction;
}
@Override
public void onReceive(Context context, Intent intent) {
logd("Received test intent action=" + intent.getAction());
if (intent.getAction().equals(mTestAction)) {
// 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;
}
handleTestAction(intent);
}
}
}
/** A filter for incoming messages allowing the normal processing flow to be skipped. */
@VisibleForTesting
public interface SmsFilter {
/**
* Returns true if a filter is invoked and the SMS processing flow should be diverted, false
* otherwise.
*
* <p>If the filter can immediately determine that the message matches, it must call
* {@link #dropFilteredSms} to drop the message from the database once it has been
* processed.
*
* <p>If the filter must perform some asynchronous work to determine if the message matches,
* it should return true to defer processing. Once it has made a determination, if it finds
* the message matches, it must call {@link #dropFilteredSms}. If the message does not
* match, it must be passed through {@code remainingFilters} and either dropped if the
* remaining filters all return false or if {@code block} is true, or else it must be
* broadcast.
*/
boolean filterSms(byte[][] pdus, int destPort, InboundSmsTracker tracker,
SmsBroadcastReceiver resultReceiver, boolean userUnlocked, boolean block,
List<SmsFilter> remainingFilters);
}
}