1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.internal.telephony.cdma; 18 19 import android.Manifest; 20 import android.app.Activity; 21 import android.app.AppOpsManager; 22 import android.content.BroadcastReceiver; 23 import android.content.Context; 24 import android.content.Intent; 25 import android.os.Bundle; 26 import android.os.Message; 27 import android.provider.Telephony.Sms.Intents; 28 import android.telephony.PhoneNumberUtils; 29 import android.telephony.cdma.CdmaSmsCbProgramData; 30 import android.telephony.cdma.CdmaSmsCbProgramResults; 31 32 import com.android.internal.telephony.CommandsInterface; 33 import com.android.internal.telephony.WakeLockStateMachine; 34 import com.android.internal.telephony.cdma.sms.BearerData; 35 import com.android.internal.telephony.cdma.sms.CdmaSmsAddress; 36 import com.android.internal.telephony.cdma.sms.SmsEnvelope; 37 38 import java.io.ByteArrayOutputStream; 39 import java.io.DataOutputStream; 40 import java.io.IOException; 41 import java.util.ArrayList; 42 43 /** 44 * Handle CDMA Service Category Program Data requests and responses. 45 */ 46 public final class CdmaServiceCategoryProgramHandler extends WakeLockStateMachine { 47 48 final CommandsInterface mCi; 49 50 /** 51 * Create a new CDMA inbound SMS handler. 52 */ 53 CdmaServiceCategoryProgramHandler(Context context, CommandsInterface commandsInterface) { 54 super("CdmaServiceCategoryProgramHandler", context, null); 55 mContext = context; 56 mCi = commandsInterface; 57 } 58 59 /** 60 * Create a new State machine for SCPD requests. 61 * @param context the context to use 62 * @param commandsInterface the radio commands interface 63 * @return the new SCPD handler 64 */ 65 static CdmaServiceCategoryProgramHandler makeScpHandler(Context context, 66 CommandsInterface commandsInterface) { 67 CdmaServiceCategoryProgramHandler handler = new CdmaServiceCategoryProgramHandler( 68 context, commandsInterface); 69 handler.start(); 70 return handler; 71 } 72 73 /** 74 * Handle Cell Broadcast messages from {@code CdmaInboundSmsHandler}. 75 * 3GPP-format Cell Broadcast messages sent from radio are handled in the subclass. 76 * 77 * @param message the message to process 78 * @return true if an ordered broadcast was sent; false on failure 79 */ 80 @Override 81 protected boolean handleSmsMessage(Message message) { 82 if (message.obj instanceof SmsMessage) { 83 return handleServiceCategoryProgramData((SmsMessage) message.obj); 84 } else { 85 loge("handleMessage got object of type: " + message.obj.getClass().getName()); 86 return false; 87 } 88 } 89 90 91 /** 92 * Send SCPD request to CellBroadcastReceiver as an ordered broadcast. 93 * @param sms the CDMA SmsMessage containing the SCPD request 94 * @return true if an ordered broadcast was sent; false on failure 95 */ 96 private boolean handleServiceCategoryProgramData(SmsMessage sms) { 97 ArrayList<CdmaSmsCbProgramData> programDataList = sms.getSmsCbProgramData(); 98 if (programDataList == null) { 99 loge("handleServiceCategoryProgramData: program data list is null!"); 100 return false; 101 } 102 103 Intent intent = new Intent(Intents.SMS_SERVICE_CATEGORY_PROGRAM_DATA_RECEIVED_ACTION); 104 intent.putExtra("sender", sms.getOriginatingAddress()); 105 intent.putParcelableArrayListExtra("program_data", programDataList); 106 107 mContext.sendOrderedBroadcast(intent, Manifest.permission.RECEIVE_SMS, 108 AppOpsManager.OP_RECEIVE_SMS, mScpResultsReceiver, 109 getHandler(), Activity.RESULT_OK, null, null); 110 return true; 111 } 112 113 /** 114 * Broadcast receiver to handle results of ordered broadcast. Sends the SCPD results 115 * as a reply SMS, then sends a message to state machine to transition to idle. 116 */ 117 private final BroadcastReceiver mScpResultsReceiver = new BroadcastReceiver() { 118 @Override 119 public void onReceive(Context context, Intent intent) { 120 sendScpResults(); 121 if (DBG) log("mScpResultsReceiver finished"); 122 sendMessage(EVENT_BROADCAST_COMPLETE); 123 } 124 125 private void sendScpResults() { 126 int resultCode = getResultCode(); 127 if ((resultCode != Activity.RESULT_OK) && (resultCode != Intents.RESULT_SMS_HANDLED)) { 128 loge("SCP results error: result code = " + resultCode); 129 return; 130 } 131 Bundle extras = getResultExtras(false); 132 if (extras == null) { 133 loge("SCP results error: missing extras"); 134 return; 135 } 136 String sender = extras.getString("sender"); 137 if (sender == null) { 138 loge("SCP results error: missing sender extra."); 139 return; 140 } 141 ArrayList<CdmaSmsCbProgramResults> results 142 = extras.getParcelableArrayList("results"); 143 if (results == null) { 144 loge("SCP results error: missing results extra."); 145 return; 146 } 147 148 BearerData bData = new BearerData(); 149 bData.messageType = BearerData.MESSAGE_TYPE_SUBMIT; 150 bData.messageId = SmsMessage.getNextMessageId(); 151 bData.serviceCategoryProgramResults = results; 152 byte[] encodedBearerData = BearerData.encode(bData); 153 154 ByteArrayOutputStream baos = new ByteArrayOutputStream(100); 155 DataOutputStream dos = new DataOutputStream(baos); 156 try { 157 dos.writeInt(SmsEnvelope.TELESERVICE_SCPT); 158 dos.writeInt(0); //servicePresent 159 dos.writeInt(0); //serviceCategory 160 CdmaSmsAddress destAddr = CdmaSmsAddress.parse( 161 PhoneNumberUtils.cdmaCheckAndProcessPlusCodeForSms(sender)); 162 dos.write(destAddr.digitMode); 163 dos.write(destAddr.numberMode); 164 dos.write(destAddr.ton); // number_type 165 dos.write(destAddr.numberPlan); 166 dos.write(destAddr.numberOfDigits); 167 dos.write(destAddr.origBytes, 0, destAddr.origBytes.length); // digits 168 // Subaddress is not supported. 169 dos.write(0); //subaddressType 170 dos.write(0); //subaddr_odd 171 dos.write(0); //subaddr_nbr_of_digits 172 dos.write(encodedBearerData.length); 173 dos.write(encodedBearerData, 0, encodedBearerData.length); 174 // Ignore the RIL response. TODO: implement retry if SMS send fails. 175 mCi.sendCdmaSms(baos.toByteArray(), null); 176 } catch (IOException e) { 177 loge("exception creating SCP results PDU", e); 178 } finally { 179 try { 180 dos.close(); 181 } catch (IOException ignored) { 182 } 183 } 184 } 185 }; 186 } 187
