/* * Copyright (C) 2008 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 com.google.android.mms.pdu.PduHeaders.MESSAGE_TYPE_DELIVERY_IND; import static com.google.android.mms.pdu.PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND; import static com.google.android.mms.pdu.PduHeaders.MESSAGE_TYPE_READ_ORIG_IND; import android.app.Activity; import android.app.AppOpsManager; import android.app.BroadcastOptions; import android.content.BroadcastReceiver; import android.content.ComponentName; import android.content.ContentValues; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.database.Cursor; import android.database.DatabaseUtils; import android.database.sqlite.SQLiteException; import android.database.sqlite.SqliteWrapper; import android.net.Uri; import android.os.Bundle; import android.os.IBinder; import android.os.IDeviceIdleController; import android.os.RemoteException; import android.os.ServiceManager; import android.os.UserHandle; import android.provider.Telephony; import android.provider.Telephony.Sms.Intents; import android.telephony.Rlog; import android.telephony.SmsManager; import android.telephony.SubscriptionManager; import android.util.Log; import com.android.internal.telephony.uicc.IccUtils; import java.util.HashMap; import com.google.android.mms.MmsException; import com.google.android.mms.pdu.DeliveryInd; import com.google.android.mms.pdu.GenericPdu; import com.google.android.mms.pdu.NotificationInd; import com.google.android.mms.pdu.PduHeaders; import com.google.android.mms.pdu.PduParser; import com.google.android.mms.pdu.PduPersister; import com.google.android.mms.pdu.ReadOrigInd; /** * WAP push handler class. * * @hide */ public class WapPushOverSms implements ServiceConnection { private static final String TAG = "WAP PUSH"; private static final boolean DBG = false; private final Context mContext; private IDeviceIdleController mDeviceIdleController; private String mWapPushManagerPackage; /** Assigned from ServiceConnection callback on main threaad. */ private volatile IWapPushManager mWapPushManager; @Override public void onServiceConnected(ComponentName name, IBinder service) { mWapPushManager = IWapPushManager.Stub.asInterface(service); if (DBG) Rlog.v(TAG, "wappush manager connected to " + hashCode()); } @Override public void onServiceDisconnected(ComponentName name) { mWapPushManager = null; if (DBG) Rlog.v(TAG, "wappush manager disconnected."); } public WapPushOverSms(Context context) { mContext = context; mDeviceIdleController = TelephonyComponentFactory.getInstance().getIDeviceIdleController(); Intent intent = new Intent(IWapPushManager.class.getName()); ComponentName comp = intent.resolveSystemService(context.getPackageManager(), 0); intent.setComponent(comp); if (comp == null || !context.bindService(intent, this, Context.BIND_AUTO_CREATE)) { Rlog.e(TAG, "bindService() for wappush manager failed"); } else { mWapPushManagerPackage = comp.getPackageName(); if (DBG) Rlog.v(TAG, "bindService() for wappush manager succeeded"); } } public void dispose() { if (mWapPushManager != null) { if (DBG) Rlog.v(TAG, "dispose: unbind wappush manager"); mContext.unbindService(this); } else { Rlog.e(TAG, "dispose: not bound to a wappush manager"); } } /** * Decodes the wap push pdu. The decoded result is wrapped inside the {@link DecodedResult} * object. The caller of this method should check {@link DecodedResult#statusCode} for the * decoding status. It can have the following values. * * Activity.RESULT_OK - the wap push pdu is successfully decoded and should be further processed * Intents.RESULT_SMS_HANDLED - the wap push pdu should be ignored. * Intents.RESULT_SMS_GENERIC_ERROR - the pdu is invalid. */ private DecodedResult decodeWapPdu(byte[] pdu, InboundSmsHandler handler) { DecodedResult result = new DecodedResult(); if (DBG) Rlog.d(TAG, "Rx: " + IccUtils.bytesToHexString(pdu)); try { int index = 0; int transactionId = pdu[index++] & 0xFF; int pduType = pdu[index++] & 0xFF; // Should we "abort" if no subId for now just no supplying extra param below int phoneId = handler.getPhone().getPhoneId(); if ((pduType != WspTypeDecoder.PDU_TYPE_PUSH) && (pduType != WspTypeDecoder.PDU_TYPE_CONFIRMED_PUSH)) { index = mContext.getResources().getInteger( com.android.internal.R.integer.config_valid_wappush_index); if (index != -1) { transactionId = pdu[index++] & 0xff; pduType = pdu[index++] & 0xff; if (DBG) Rlog.d(TAG, "index = " + index + " PDU Type = " + pduType + " transactionID = " + transactionId); // recheck wap push pduType if ((pduType != WspTypeDecoder.PDU_TYPE_PUSH) && (pduType != WspTypeDecoder.PDU_TYPE_CONFIRMED_PUSH)) { if (DBG) Rlog.w(TAG, "Received non-PUSH WAP PDU. Type = " + pduType); result.statusCode = Intents.RESULT_SMS_HANDLED; return result; } } else { if (DBG) Rlog.w(TAG, "Received non-PUSH WAP PDU. Type = " + pduType); result.statusCode = Intents.RESULT_SMS_HANDLED; return result; } } WspTypeDecoder pduDecoder = TelephonyComponentFactory.getInstance().makeWspTypeDecoder(pdu); /** * Parse HeaderLen(unsigned integer). * From wap-230-wsp-20010705-a section 8.1.2 * The maximum size of a uintvar is 32 bits. * So it will be encoded in no more than 5 octets. */ if (pduDecoder.decodeUintvarInteger(index) == false) { if (DBG) Rlog.w(TAG, "Received PDU. Header Length error."); result.statusCode = Intents.RESULT_SMS_GENERIC_ERROR; return result; } int headerLength = (int) pduDecoder.getValue32(); index += pduDecoder.getDecodedDataLength(); int headerStartIndex = index; /** * Parse Content-Type. * From wap-230-wsp-20010705-a section 8.4.2.24 * * Content-type-value = Constrained-media | Content-general-form * Content-general-form = Value-length Media-type * Media-type = (Well-known-media | Extension-Media) *(Parameter) * Value-length = Short-length | (Length-quote Length) * Short-length = (octet <= WAP_PDU_SHORT_LENGTH_MAX) * Length-quote = (WAP_PDU_LENGTH_QUOTE) * Length = Uintvar-integer */ if (pduDecoder.decodeContentType(index) == false) { if (DBG) Rlog.w(TAG, "Received PDU. Header Content-Type error."); result.statusCode = Intents.RESULT_SMS_GENERIC_ERROR; return result; } String mimeType = pduDecoder.getValueString(); long binaryContentType = pduDecoder.getValue32(); index += pduDecoder.getDecodedDataLength(); byte[] header = new byte[headerLength]; System.arraycopy(pdu, headerStartIndex, header, 0, header.length); byte[] intentData; if (mimeType != null && mimeType.equals(WspTypeDecoder.CONTENT_TYPE_B_PUSH_CO)) { intentData = pdu; } else { int dataIndex = headerStartIndex + headerLength; intentData = new byte[pdu.length - dataIndex]; System.arraycopy(pdu, dataIndex, intentData, 0, intentData.length); } int[] subIds = SubscriptionManager.getSubId(phoneId); int subId = (subIds != null) && (subIds.length > 0) ? subIds[0] : SmsManager.getDefaultSmsSubscriptionId(); // Continue if PDU parsing fails: the default messaging app may successfully parse the // same PDU. GenericPdu parsedPdu = null; try { parsedPdu = new PduParser(intentData, shouldParseContentDisposition(subId)).parse(); } catch (Exception e) { Rlog.e(TAG, "Unable to parse PDU: " + e.toString()); } if (parsedPdu != null && parsedPdu.getMessageType() == MESSAGE_TYPE_NOTIFICATION_IND) { final NotificationInd nInd = (NotificationInd) parsedPdu; if (nInd.getFrom() != null && BlockChecker.isBlocked(mContext, nInd.getFrom().getString())) { result.statusCode = Intents.RESULT_SMS_HANDLED; return result; } } /** * Seek for application ID field in WSP header. * If application ID is found, WapPushManager substitute the message * processing. Since WapPushManager is optional module, if WapPushManager * is not found, legacy message processing will be continued. */ if (pduDecoder.seekXWapApplicationId(index, index + headerLength - 1)) { index = (int) pduDecoder.getValue32(); pduDecoder.decodeXWapApplicationId(index); String wapAppId = pduDecoder.getValueString(); if (wapAppId == null) { wapAppId = Integer.toString((int) pduDecoder.getValue32()); } result.wapAppId = wapAppId; String contentType = ((mimeType == null) ? Long.toString(binaryContentType) : mimeType); result.contentType = contentType; if (DBG) Rlog.v(TAG, "appid found: " + wapAppId + ":" + contentType); } result.subId = subId; result.phoneId = phoneId; result.parsedPdu = parsedPdu; result.mimeType = mimeType; result.transactionId = transactionId; result.pduType = pduType; result.header = header; result.intentData = intentData; result.contentTypeParameters = pduDecoder.getContentParameters(); result.statusCode = Activity.RESULT_OK; } catch (ArrayIndexOutOfBoundsException aie) { // 0-byte WAP PDU or other unexpected WAP PDU contents can easily throw this; // log exception string without stack trace and return false. Rlog.e(TAG, "ignoring dispatchWapPdu() array index exception: " + aie); result.statusCode = Intents.RESULT_SMS_GENERIC_ERROR; } return result; } /** * Dispatches inbound messages that are in the WAP PDU format. See * wap-230-wsp-20010705-a section 8 for details on the WAP PDU format. * * @param pdu The WAP PDU, made up of one or more SMS PDUs * @return a result code from {@link android.provider.Telephony.Sms.Intents}, or * {@link Activity#RESULT_OK} if the message has been broadcast * to applications */ public int dispatchWapPdu(byte[] pdu, BroadcastReceiver receiver, InboundSmsHandler handler) { DecodedResult result = decodeWapPdu(pdu, handler); if (result.statusCode != Activity.RESULT_OK) { return result.statusCode; } if (SmsManager.getDefault().getAutoPersisting()) { // Store the wap push data in telephony writeInboxMessage(result.subId, result.parsedPdu); } /** * If the pdu has application ID, WapPushManager substitute the message * processing. Since WapPushManager is optional module, if WapPushManager * is not found, legacy message processing will be continued. */ if (result.wapAppId != null) { try { boolean processFurther = true; IWapPushManager wapPushMan = mWapPushManager; if (wapPushMan == null) { if (DBG) Rlog.w(TAG, "wap push manager not found!"); } else { mDeviceIdleController.addPowerSaveTempWhitelistAppForMms( mWapPushManagerPackage, 0, "mms-mgr"); Intent intent = new Intent(); intent.putExtra("transactionId", result.transactionId); intent.putExtra("pduType", result.pduType); intent.putExtra("header", result.header); intent.putExtra("data", result.intentData); intent.putExtra("contentTypeParameters", result.contentTypeParameters); SubscriptionManager.putPhoneIdAndSubIdExtra(intent, result.phoneId); int procRet = wapPushMan.processMessage( result.wapAppId, result.contentType, intent); if (DBG) Rlog.v(TAG, "procRet:" + procRet); if ((procRet & WapPushManagerParams.MESSAGE_HANDLED) > 0 && (procRet & WapPushManagerParams.FURTHER_PROCESSING) == 0) { processFurther = false; } } if (!processFurther) { return Intents.RESULT_SMS_HANDLED; } } catch (RemoteException e) { if (DBG) Rlog.w(TAG, "remote func failed..."); } } if (DBG) Rlog.v(TAG, "fall back to existing handler"); if (result.mimeType == null) { if (DBG) Rlog.w(TAG, "Header Content-Type error."); return Intents.RESULT_SMS_GENERIC_ERROR; } Intent intent = new Intent(Intents.WAP_PUSH_DELIVER_ACTION); intent.setType(result.mimeType); intent.putExtra("transactionId", result.transactionId); intent.putExtra("pduType", result.pduType); intent.putExtra("header", result.header); intent.putExtra("data", result.intentData); intent.putExtra("contentTypeParameters", result.contentTypeParameters); SubscriptionManager.putPhoneIdAndSubIdExtra(intent, result.phoneId); // Direct the intent to only the default MMS app. If we can't find a default MMS app // then sent it to all broadcast receivers. ComponentName componentName = SmsApplication.getDefaultMmsApplication(mContext, true); Bundle options = null; if (componentName != null) { // Deliver MMS message only to this receiver intent.setComponent(componentName); if (DBG) Rlog.v(TAG, "Delivering MMS to: " + componentName.getPackageName() + " " + componentName.getClassName()); try { long duration = mDeviceIdleController.addPowerSaveTempWhitelistAppForMms( componentName.getPackageName(), 0, "mms-app"); BroadcastOptions bopts = BroadcastOptions.makeBasic(); bopts.setTemporaryAppWhitelistDuration(duration); options = bopts.toBundle(); } catch (RemoteException e) { } } handler.dispatchIntent(intent, getPermissionForType(result.mimeType), getAppOpsPermissionForIntent(result.mimeType), options, receiver, UserHandle.SYSTEM); return Activity.RESULT_OK; } /** * Check whether the pdu is a MMS WAP push pdu that should be dispatched to the SMS app. */ public boolean isWapPushForMms(byte[] pdu, InboundSmsHandler handler) { DecodedResult result = decodeWapPdu(pdu, handler); return result.statusCode == Activity.RESULT_OK && WspTypeDecoder.CONTENT_TYPE_B_MMS.equals(result.mimeType); } private static boolean shouldParseContentDisposition(int subId) { return SmsManager .getSmsManagerForSubscriptionId(subId) .getCarrierConfigValues() .getBoolean(SmsManager.MMS_CONFIG_SUPPORT_MMS_CONTENT_DISPOSITION, true); } private void writeInboxMessage(int subId, GenericPdu pdu) { if (pdu == null) { Rlog.e(TAG, "Invalid PUSH PDU"); } final PduPersister persister = PduPersister.getPduPersister(mContext); final int type = pdu.getMessageType(); try { switch (type) { case MESSAGE_TYPE_DELIVERY_IND: case MESSAGE_TYPE_READ_ORIG_IND: { final long threadId = getDeliveryOrReadReportThreadId(mContext, pdu); if (threadId == -1) { // The associated SendReq isn't found, therefore skip // processing this PDU. Rlog.e(TAG, "Failed to find delivery or read report's thread id"); break; } final Uri uri = persister.persist( pdu, Telephony.Mms.Inbox.CONTENT_URI, true/*createThreadId*/, true/*groupMmsEnabled*/, null/*preOpenedFiles*/); if (uri == null) { Rlog.e(TAG, "Failed to persist delivery or read report"); break; } // Update thread ID for ReadOrigInd & DeliveryInd. final ContentValues values = new ContentValues(1); values.put(Telephony.Mms.THREAD_ID, threadId); if (SqliteWrapper.update( mContext, mContext.getContentResolver(), uri, values, null/*where*/, null/*selectionArgs*/) != 1) { Rlog.e(TAG, "Failed to update delivery or read report thread id"); } break; } case MESSAGE_TYPE_NOTIFICATION_IND: { final NotificationInd nInd = (NotificationInd) pdu; Bundle configs = SmsManager.getSmsManagerForSubscriptionId(subId) .getCarrierConfigValues(); if (configs != null && configs.getBoolean( SmsManager.MMS_CONFIG_APPEND_TRANSACTION_ID, false)) { final byte [] contentLocation = nInd.getContentLocation(); if ('=' == contentLocation[contentLocation.length - 1]) { byte [] transactionId = nInd.getTransactionId(); byte [] contentLocationWithId = new byte [contentLocation.length + transactionId.length]; System.arraycopy(contentLocation, 0, contentLocationWithId, 0, contentLocation.length); System.arraycopy(transactionId, 0, contentLocationWithId, contentLocation.length, transactionId.length); nInd.setContentLocation(contentLocationWithId); } } if (!isDuplicateNotification(mContext, nInd)) { final Uri uri = persister.persist( pdu, Telephony.Mms.Inbox.CONTENT_URI, true/*createThreadId*/, true/*groupMmsEnabled*/, null/*preOpenedFiles*/); if (uri == null) { Rlog.e(TAG, "Failed to save MMS WAP push notification ind"); } } else { Rlog.d(TAG, "Skip storing duplicate MMS WAP push notification ind: " + new String(nInd.getContentLocation())); } break; } default: Log.e(TAG, "Received unrecognized WAP Push PDU."); } } catch (MmsException e) { Log.e(TAG, "Failed to save MMS WAP push data: type=" + type, e); } catch (RuntimeException e) { Log.e(TAG, "Unexpected RuntimeException in persisting MMS WAP push data", e); } } private static final String THREAD_ID_SELECTION = Telephony.Mms.MESSAGE_ID + "=? AND " + Telephony.Mms.MESSAGE_TYPE + "=?"; private static long getDeliveryOrReadReportThreadId(Context context, GenericPdu pdu) { String messageId; if (pdu instanceof DeliveryInd) { messageId = new String(((DeliveryInd) pdu).getMessageId()); } else if (pdu instanceof ReadOrigInd) { messageId = new String(((ReadOrigInd) pdu).getMessageId()); } else { Rlog.e(TAG, "WAP Push data is neither delivery or read report type: " + pdu.getClass().getCanonicalName()); return -1L; } Cursor cursor = null; try { cursor = SqliteWrapper.query( context, context.getContentResolver(), Telephony.Mms.CONTENT_URI, new String[]{ Telephony.Mms.THREAD_ID }, THREAD_ID_SELECTION, new String[]{ DatabaseUtils.sqlEscapeString(messageId), Integer.toString(PduHeaders.MESSAGE_TYPE_SEND_REQ) }, null/*sortOrder*/); if (cursor != null && cursor.moveToFirst()) { return cursor.getLong(0); } } catch (SQLiteException e) { Rlog.e(TAG, "Failed to query delivery or read report thread id", e); } finally { if (cursor != null) { cursor.close(); } } return -1L; } private static final String LOCATION_SELECTION = Telephony.Mms.MESSAGE_TYPE + "=? AND " + Telephony.Mms.CONTENT_LOCATION + " =?"; private static boolean isDuplicateNotification(Context context, NotificationInd nInd) { final byte[] rawLocation = nInd.getContentLocation(); if (rawLocation != null) { String location = new String(rawLocation); String[] selectionArgs = new String[] { location }; Cursor cursor = null; try { cursor = SqliteWrapper.query( context, context.getContentResolver(), Telephony.Mms.CONTENT_URI, new String[]{Telephony.Mms._ID}, LOCATION_SELECTION, new String[]{ Integer.toString(PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND), new String(rawLocation) }, null/*sortOrder*/); if (cursor != null && cursor.getCount() > 0) { // We already received the same notification before. return true; } } catch (SQLiteException e) { Rlog.e(TAG, "failed to query existing notification ind", e); } finally { if (cursor != null) { cursor.close(); } } } return false; } public static String getPermissionForType(String mimeType) { String permission; if (WspTypeDecoder.CONTENT_TYPE_B_MMS.equals(mimeType)) { permission = android.Manifest.permission.RECEIVE_MMS; } else { permission = android.Manifest.permission.RECEIVE_WAP_PUSH; } return permission; } public static int getAppOpsPermissionForIntent(String mimeType) { int appOp; if (WspTypeDecoder.CONTENT_TYPE_B_MMS.equals(mimeType)) { appOp = AppOpsManager.OP_RECEIVE_MMS; } else { appOp = AppOpsManager.OP_RECEIVE_WAP_PUSH; } return appOp; } /** * Place holder for decoded Wap pdu data. */ private final class DecodedResult { String mimeType; String contentType; int transactionId; int pduType; int phoneId; int subId; byte[] header; String wapAppId; byte[] intentData; HashMap contentTypeParameters; GenericPdu parsedPdu; int statusCode; } }