| /* |
| * 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.cdma; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.os.Message; |
| import android.os.SystemProperties; |
| import android.provider.Telephony.Sms.Intents; |
| import android.telephony.SmsCbMessage; |
| |
| import com.android.internal.telephony.CellBroadcastHandler; |
| import com.android.internal.telephony.CommandsInterface; |
| import com.android.internal.telephony.InboundSmsHandler; |
| import com.android.internal.telephony.InboundSmsTracker; |
| import com.android.internal.telephony.PhoneBase; |
| import com.android.internal.telephony.SmsConstants; |
| import com.android.internal.telephony.SmsMessageBase; |
| import com.android.internal.telephony.SmsStorageMonitor; |
| import com.android.internal.telephony.TelephonyProperties; |
| import com.android.internal.telephony.WspTypeDecoder; |
| import com.android.internal.telephony.cdma.sms.SmsEnvelope; |
| |
| import java.util.Arrays; |
| |
| /** |
| * Subclass of {@link InboundSmsHandler} for 3GPP2 type messages. |
| */ |
| public class CdmaInboundSmsHandler extends InboundSmsHandler { |
| |
| private final CdmaSMSDispatcher mSmsDispatcher; |
| private final CdmaServiceCategoryProgramHandler mServiceCategoryProgramHandler; |
| |
| private byte[] mLastDispatchedSmsFingerprint; |
| private byte[] mLastAcknowledgedSmsFingerprint; |
| |
| private final boolean mCheckForDuplicatePortsInOmadmWapPush = Resources.getSystem().getBoolean( |
| com.android.internal.R.bool.config_duplicate_port_omadm_wappush); |
| |
| /** |
| * Create a new inbound SMS handler for CDMA. |
| */ |
| private CdmaInboundSmsHandler(Context context, SmsStorageMonitor storageMonitor, |
| PhoneBase phone, CdmaSMSDispatcher smsDispatcher) { |
| super("CdmaInboundSmsHandler", context, storageMonitor, phone, |
| CellBroadcastHandler.makeCellBroadcastHandler(context, phone)); |
| mSmsDispatcher = smsDispatcher; |
| mServiceCategoryProgramHandler = CdmaServiceCategoryProgramHandler.makeScpHandler(context, |
| phone.mCi); |
| phone.mCi.setOnNewCdmaSms(getHandler(), EVENT_NEW_SMS, null); |
| } |
| |
| /** |
| * Unregister for CDMA SMS. |
| */ |
| @Override |
| protected void onQuitting() { |
| mPhone.mCi.unSetOnNewCdmaSms(getHandler()); |
| mCellBroadcastHandler.dispose(); |
| |
| if (DBG) log("unregistered for 3GPP2 SMS"); |
| super.onQuitting(); |
| } |
| |
| /** |
| * Wait for state machine to enter startup state. We can't send any messages until then. |
| */ |
| public static CdmaInboundSmsHandler makeInboundSmsHandler(Context context, |
| SmsStorageMonitor storageMonitor, PhoneBase phone, CdmaSMSDispatcher smsDispatcher) { |
| CdmaInboundSmsHandler handler = new CdmaInboundSmsHandler(context, storageMonitor, |
| phone, smsDispatcher); |
| handler.start(); |
| return handler; |
| } |
| |
| /** |
| * Return whether the device is in Emergency Call Mode (only for 3GPP2). |
| * @return true if the device is in ECM; false otherwise |
| */ |
| private static boolean isInEmergencyCallMode() { |
| String inEcm = SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE, "false"); |
| return "true".equals(inEcm); |
| } |
| |
| /** |
| * Return true if this handler is for 3GPP2 messages; false for 3GPP format. |
| * @return true (3GPP2) |
| */ |
| @Override |
| protected boolean is3gpp2() { |
| return true; |
| } |
| |
| /** |
| * Process Cell Broadcast, Voicemail Notification, and other 3GPP/3GPP2-specific messages. |
| * @param smsb the SmsMessageBase object from the RIL |
| * @return true if the message was handled here; false to continue processing |
| */ |
| @Override |
| protected int dispatchMessageRadioSpecific(SmsMessageBase smsb) { |
| if (isInEmergencyCallMode()) { |
| return Activity.RESULT_OK; |
| } |
| |
| SmsMessage sms = (SmsMessage) smsb; |
| boolean isBroadcastType = (SmsEnvelope.MESSAGE_TYPE_BROADCAST == sms.getMessageType()); |
| |
| // Handle CMAS emergency broadcast messages. |
| if (isBroadcastType) { |
| log("Broadcast type message"); |
| SmsCbMessage cbMessage = sms.parseBroadcastSms(); |
| if (cbMessage != null) { |
| mCellBroadcastHandler.dispatchSmsMessage(cbMessage); |
| } else { |
| loge("error trying to parse broadcast SMS"); |
| } |
| return Intents.RESULT_SMS_HANDLED; |
| } |
| |
| // Initialize fingerprint field, and see if we have a network duplicate SMS. |
| mLastDispatchedSmsFingerprint = sms.getIncomingSmsFingerprint(); |
| if (mLastAcknowledgedSmsFingerprint != null && |
| Arrays.equals(mLastDispatchedSmsFingerprint, mLastAcknowledgedSmsFingerprint)) { |
| return Intents.RESULT_SMS_HANDLED; |
| } |
| |
| // Decode BD stream and set sms variables. |
| sms.parseSms(); |
| int teleService = sms.getTeleService(); |
| |
| switch (teleService) { |
| case SmsEnvelope.TELESERVICE_VMN: |
| case SmsEnvelope.TELESERVICE_MWI: |
| // handle voicemail indication |
| handleVoicemailTeleservice(sms); |
| return Intents.RESULT_SMS_HANDLED; |
| |
| case SmsEnvelope.TELESERVICE_WMT: |
| case SmsEnvelope.TELESERVICE_WEMT: |
| if (sms.isStatusReportMessage()) { |
| mSmsDispatcher.sendStatusReportMessage(sms); |
| return Intents.RESULT_SMS_HANDLED; |
| } |
| break; |
| |
| case SmsEnvelope.TELESERVICE_SCPT: |
| mServiceCategoryProgramHandler.dispatchSmsMessage(sms); |
| return Intents.RESULT_SMS_HANDLED; |
| |
| case SmsEnvelope.TELESERVICE_WAP: |
| // handled below, after storage check |
| break; |
| |
| default: |
| loge("unsupported teleservice 0x" + Integer.toHexString(teleService)); |
| return Intents.RESULT_SMS_UNSUPPORTED; |
| } |
| |
| if (!mStorageMonitor.isStorageAvailable() && |
| sms.getMessageClass() != SmsConstants.MessageClass.CLASS_0) { |
| // It's a storable message and there's no storage available. Bail. |
| // (See C.S0015-B v2.0 for a description of "Immediate Display" |
| // messages, which we represent as CLASS_0.) |
| return Intents.RESULT_SMS_OUT_OF_MEMORY; |
| } |
| |
| if (SmsEnvelope.TELESERVICE_WAP == teleService) { |
| return processCdmaWapPdu(sms.getUserData(), sms.mMessageRef, |
| sms.getOriginatingAddress(), sms.getTimestampMillis()); |
| } |
| |
| return dispatchNormalMessage(smsb); |
| } |
| |
| /** |
| * 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. |
| */ |
| @Override |
| protected void acknowledgeLastIncomingSms(boolean success, int result, Message response) { |
| if (isInEmergencyCallMode()) { |
| return; |
| } |
| |
| int causeCode = resultToCause(result); |
| mPhone.mCi.acknowledgeLastIncomingCdmaSms(success, causeCode, response); |
| |
| if (causeCode == 0) { |
| mLastAcknowledgedSmsFingerprint = mLastDispatchedSmsFingerprint; |
| } |
| mLastDispatchedSmsFingerprint = null; |
| } |
| |
| /** |
| * Called when the phone changes the default method updates mPhone |
| * mStorageMonitor and mCellBroadcastHandler.updatePhoneObject. |
| * Override if different or other behavior is desired. |
| * |
| * @param phone |
| */ |
| @Override |
| protected void onUpdatePhoneObject(PhoneBase phone) { |
| super.onUpdatePhoneObject(phone); |
| mCellBroadcastHandler.updatePhoneObject(phone); |
| } |
| |
| /** |
| * Convert Android result code to CDMA SMS failure cause. |
| * @param rc the Android SMS intent result value |
| * @return 0 for success, or a CDMA SMS failure cause value |
| */ |
| private static int resultToCause(int rc) { |
| switch (rc) { |
| case Activity.RESULT_OK: |
| case Intents.RESULT_SMS_HANDLED: |
| // Cause code is ignored on success. |
| return 0; |
| case Intents.RESULT_SMS_OUT_OF_MEMORY: |
| return CommandsInterface.CDMA_SMS_FAIL_CAUSE_RESOURCE_SHORTAGE; |
| case Intents.RESULT_SMS_UNSUPPORTED: |
| return CommandsInterface.CDMA_SMS_FAIL_CAUSE_INVALID_TELESERVICE_ID; |
| case Intents.RESULT_SMS_GENERIC_ERROR: |
| default: |
| return CommandsInterface.CDMA_SMS_FAIL_CAUSE_ENCODING_PROBLEM; |
| } |
| } |
| |
| /** |
| * Handle {@link SmsEnvelope#TELESERVICE_VMN} and {@link SmsEnvelope#TELESERVICE_MWI}. |
| * @param sms the message to process |
| */ |
| private void handleVoicemailTeleservice(SmsMessage sms) { |
| int voicemailCount = sms.getNumOfVoicemails(); |
| if (DBG) log("Voicemail count=" + voicemailCount); |
| |
| // range check |
| if (voicemailCount < 0) { |
| voicemailCount = -1; |
| } else if (voicemailCount > 99) { |
| // C.S0015-B v2, 4.5.12 |
| // range: 0-99 |
| voicemailCount = 99; |
| } |
| // update voice mail count in phone |
| mPhone.setVoiceMessageCount(voicemailCount); |
| // store voice mail count in preferences |
| storeVoiceMailCount(); |
| } |
| |
| /** |
| * Processes inbound messages that are in the WAP-WDP PDU format. See |
| * wap-259-wdp-20010614-a section 6.5 for details on the WAP-WDP PDU format. |
| * WDP segments are gathered until a datagram completes and gets dispatched. |
| * |
| * @param pdu The WAP-WDP PDU segment |
| * @return a result code from {@link android.provider.Telephony.Sms.Intents}, or |
| * {@link Activity#RESULT_OK} if the message has been broadcast |
| * to applications |
| */ |
| private int processCdmaWapPdu(byte[] pdu, int referenceNumber, String address, |
| long timestamp) { |
| int index = 0; |
| |
| int msgType = (0xFF & pdu[index++]); |
| if (msgType != 0) { |
| log("Received a WAP SMS which is not WDP. Discard."); |
| return Intents.RESULT_SMS_HANDLED; |
| } |
| int totalSegments = (0xFF & pdu[index++]); // >= 1 |
| int segment = (0xFF & pdu[index++]); // >= 0 |
| |
| if (segment >= totalSegments) { |
| loge("WDP bad segment #" + segment + " expecting 0-" + (totalSegments - 1)); |
| return Intents.RESULT_SMS_HANDLED; |
| } |
| |
| // Only the first segment contains sourcePort and destination Port |
| int sourcePort = 0; |
| int destinationPort = 0; |
| if (segment == 0) { |
| //process WDP segment |
| sourcePort = (0xFF & pdu[index++]) << 8; |
| sourcePort |= 0xFF & pdu[index++]; |
| destinationPort = (0xFF & pdu[index++]) << 8; |
| destinationPort |= 0xFF & pdu[index++]; |
| // Some carriers incorrectly send duplicate port fields in omadm wap pushes. |
| // If configured, check for that here |
| if (mCheckForDuplicatePortsInOmadmWapPush) { |
| if (checkDuplicatePortOmadmWapPush(pdu, index)) { |
| index = index + 4; // skip duplicate port fields |
| } |
| } |
| } |
| |
| // Lookup all other related parts |
| log("Received WAP PDU. Type = " + msgType + ", originator = " + address |
| + ", src-port = " + sourcePort + ", dst-port = " + destinationPort |
| + ", ID = " + referenceNumber + ", segment# = " + segment + '/' + totalSegments); |
| |
| // pass the user data portion of the PDU to the shared handler in SMSDispatcher |
| byte[] userData = new byte[pdu.length - index]; |
| System.arraycopy(pdu, index, userData, 0, pdu.length - index); |
| |
| InboundSmsTracker tracker = new InboundSmsTracker(userData, timestamp, destinationPort, |
| true, address, referenceNumber, segment, totalSegments, true); |
| |
| return addTrackerToRawTableAndSendMessage(tracker); |
| } |
| |
| /** |
| * Optional check to see if the received WapPush is an OMADM notification with erroneous |
| * extra port fields. |
| * - Some carriers make this mistake. |
| * ex: MSGTYPE-TotalSegments-CurrentSegment |
| * -SourcePortDestPort-SourcePortDestPort-OMADM PDU |
| * @param origPdu The WAP-WDP PDU segment |
| * @param index Current Index while parsing the PDU. |
| * @return True if OrigPdu is OmaDM Push Message which has duplicate ports. |
| * False if OrigPdu is NOT OmaDM Push Message which has duplicate ports. |
| */ |
| private static boolean checkDuplicatePortOmadmWapPush(byte[] origPdu, int index) { |
| index += 4; |
| byte[] omaPdu = new byte[origPdu.length - index]; |
| System.arraycopy(origPdu, index, omaPdu, 0, omaPdu.length); |
| |
| WspTypeDecoder pduDecoder = new WspTypeDecoder(omaPdu); |
| int wspIndex = 2; |
| |
| // Process header length field |
| if (!pduDecoder.decodeUintvarInteger(wspIndex)) { |
| return false; |
| } |
| |
| wspIndex += pduDecoder.getDecodedDataLength(); // advance to next field |
| |
| // Process content type field |
| if (!pduDecoder.decodeContentType(wspIndex)) { |
| return false; |
| } |
| |
| String mimeType = pduDecoder.getValueString(); |
| return (WspTypeDecoder.CONTENT_TYPE_B_PUSH_SYNCML_NOTI.equals(mimeType)); |
| } |
| } |