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.SubscriptionManager; 30 import android.telephony.cdma.CdmaSmsCbProgramData; 31 import android.telephony.cdma.CdmaSmsCbProgramResults; 32 33 import com.android.internal.telephony.CommandsInterface; 34 import com.android.internal.telephony.WakeLockStateMachine; 35 import com.android.internal.telephony.cdma.sms.BearerData; 36 import com.android.internal.telephony.cdma.sms.CdmaSmsAddress; 37 import com.android.internal.telephony.cdma.sms.SmsEnvelope; 38 39 import java.io.ByteArrayOutputStream; 40 import java.io.DataOutputStream; 41 import java.io.IOException; 42 import java.util.ArrayList; 43 44 /** 45 * Handle CDMA Service Category Program Data requests and responses. 46 */ 47 public final class CdmaServiceCategoryProgramHandler extends WakeLockStateMachine { 48 49 final CommandsInterface mCi; 50 51 /** 52 * Create a new CDMA inbound SMS handler. 53 */ 54 CdmaServiceCategoryProgramHandler(Context context, CommandsInterface commandsInterface) { 55 super("CdmaServiceCategoryProgramHandler", context, null); 56 mContext = context; 57 mCi = commandsInterface; 58 } 59 60 /** 61 * Create a new State machine for SCPD requests. 62 * @param context the context to use 63 * @param commandsInterface the radio commands interface 64 * @return the new SCPD handler 65 */ 66 static CdmaServiceCategoryProgramHandler makeScpHandler(Context context, 67 CommandsInterface commandsInterface) { 68 CdmaServiceCategoryProgramHandler handler = new CdmaServiceCategoryProgramHandler( 69 context, commandsInterface); 70 handler.start(); 71 return handler; 72 } 73 74 /** 75 * Handle Cell Broadcast messages from {@code CdmaInboundSmsHandler}. 76 * 3GPP-format Cell Broadcast messages sent from radio are handled in the subclass. 77 * 78 * @param message the message to process 79 * @return true if an ordered broadcast was sent; false on failure 80 */ 81 @Override 82 protected boolean handleSmsMessage(Message message) { 83 if (message.obj instanceof SmsMessage) { 84 return handleServiceCategoryProgramData((SmsMessage) message.obj); 85 } else { 86 loge("handleMessage got object of type: " + message.obj.getClass().getName()); 87 return false; 88 } 89 } 90 91 92 /** 93 * Send SCPD request to CellBroadcastReceiver as an ordered broadcast. 94 * @param sms the CDMA SmsMessage containing the SCPD request 95 * @return true if an ordered broadcast was sent; false on failure 96 */ 97 private boolean handleServiceCategoryProgramData(SmsMessage sms) { 98 ArrayList<CdmaSmsCbProgramData> programDataList = sms.getSmsCbProgramData(); 99 if (programDataList == null) { 100 loge("handleServiceCategoryProgramData: program data list is null!"); 101 return false; 102 } 103 104 Intent intent = new Intent(Intents.SMS_SERVICE_CATEGORY_PROGRAM_DATA_RECEIVED_ACTION); 105 intent.setPackage(mContext.getResources().getString( 106 com.android.internal.R.string.config_defaultCellBroadcastReceiverPkg)); 107 intent.putExtra("sender", sms.getOriginatingAddress()); 108 intent.putParcelableArrayListExtra("program_data", programDataList); 109 SubscriptionManager.putPhoneIdAndSubIdExtra(intent, mPhone.getPhoneId()); 110 mContext.sendOrderedBroadcast(intent, Manifest.permission.RECEIVE_SMS, 111 AppOpsManager.OP_RECEIVE_SMS, mScpResultsReceiver, 112 getHandler(), Activity.RESULT_OK, null, null); 113 return true; 114 } 115 116 /** 117 * Broadcast receiver to handle results of ordered broadcast. Sends the SCPD results 118 * as a reply SMS, then sends a message to state machine to transition to idle. 119 */ 120 private final BroadcastReceiver mScpResultsReceiver = new BroadcastReceiver() { 121 @Override 122 public void onReceive(Context context, Intent intent) { 123 sendScpResults(); 124 if (DBG) log("mScpResultsReceiver finished"); 125 sendMessage(EVENT_BROADCAST_COMPLETE); 126 } 127 128 private void sendScpResults() { 129 int resultCode = getResultCode(); 130 if ((resultCode != Activity.RESULT_OK) && (resultCode != Intents.RESULT_SMS_HANDLED)) { 131 loge("SCP results error: result code = " + resultCode); 132 return; 133 } 134 Bundle extras = getResultExtras(false); 135 if (extras == null) { 136 loge("SCP results error: missing extras"); 137 return; 138 } 139 String sender = extras.getString("sender"); 140 if (sender == null) { 141 loge("SCP results error: missing sender extra."); 142 return; 143 } 144 ArrayList<CdmaSmsCbProgramResults> results 145 = extras.getParcelableArrayList("results"); 146 if (results == null) { 147 loge("SCP results error: missing results extra."); 148 return; 149 } 150 151 BearerData bData = new BearerData(); 152 bData.messageType = BearerData.MESSAGE_TYPE_SUBMIT; 153 bData.messageId = SmsMessage.getNextMessageId(); 154 bData.serviceCategoryProgramResults = results; 155 byte[] encodedBearerData = BearerData.encode(bData); 156 157 ByteArrayOutputStream baos = new ByteArrayOutputStream(100); 158 DataOutputStream dos = new DataOutputStream(baos); 159 try { 160 dos.writeInt(SmsEnvelope.TELESERVICE_SCPT); 161 dos.writeInt(0); //servicePresent 162 dos.writeInt(0); //serviceCategory 163 CdmaSmsAddress destAddr = CdmaSmsAddress.parse( 164 PhoneNumberUtils.cdmaCheckAndProcessPlusCodeForSms(sender)); 165 dos.write(destAddr.digitMode); 166 dos.write(destAddr.numberMode); 167 dos.write(destAddr.ton); // number_type 168 dos.write(destAddr.numberPlan); 169 dos.write(destAddr.numberOfDigits); 170 dos.write(destAddr.origBytes, 0, destAddr.origBytes.length); // digits 171 // Subaddress is not supported. 172 dos.write(0); //subaddressType 173 dos.write(0); //subaddr_odd 174 dos.write(0); //subaddr_nbr_of_digits 175 dos.write(encodedBearerData.length); 176 dos.write(encodedBearerData, 0, encodedBearerData.length); 177 // Ignore the RIL response. TODO: implement retry if SMS send fails. 178 mCi.sendCdmaSms(baos.toByteArray(), null); 179 } catch (IOException e) { 180 loge("exception creating SCP results PDU", e); 181 } finally { 182 try { 183 dos.close(); 184 } catch (IOException ignored) { 185 } 186 } 187 } 188 }; 189 } 190
