I tried to implement a function equivalent to Felica Lite with HCE-F of Android
Introduction
I implemented a function equivalent to Felica Lite with HCE-F of Android. However, for simplicity, unlike Felica Lite, only one block is accepted when reading. Also, polling is not implemented because I could not reproduce the scene where polling flies again at hand.
IDm is supposed to be random, so it reacts as a card of that IDm regardless of IDm. (There are restrictions. For details, refer to Sony's ** Host-based Card Emulation for NFC-F Application Development Guidelines **.)
Service source
Please refer to the following for the parts other than HCEFService.java. Notes and sample sources for Android HCE-F
** Click here for easier to use **
HCEFService.java
/*
zlib License
Copyright (c) 2018 GPS_NMEA_JP
This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
package com.example.gpsnmeajp.hce_test;
import android.nfc.cardemulation.HostNfcFService;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
public class HCEFService extends HostNfcFService {
final int PACKET_LENGTH_POS = 0;
final int PACKET_LENGTH_SIZE = 1;
final int COMMAND_TYPE_POS = 1;
final int COMMAND_TYPE_SIZE = 1;
final int IDM_POS = 2;
final int IDM_SIZE = 8;
final int RESPONSE_SIZE = 1;
final int STATUS_FLAG1_SIZE = 1;
final int STATUS_FLAG2_SIZE = 1;
final int BLOCK_NUM_SIZE = 1;
final int BLOCK_SIZE = 16;
final int ONE_BLOCK = 1;
//---
final byte CMD_POLLING = (byte)0x04;
final byte RES_POLLING = (byte)0x05;
final byte CMD_READ_WITHOUT_ENCRYPTION = (byte)0x06;
final byte RES_READ_WITHOUT_ENCRYPTION = (byte)0x07;
final byte CMD_WRITE_WITHOUT_ENCRYPTION = (byte)0x08;
final byte RES_WRITE_WITHOUT_ENCRYPTION = (byte)0x09;
//---
final byte STATUS_FLAG1_SUCCESS = (byte)0x00;
final byte STATUS_FLAG1_FAILED = (byte)0xFF;
final byte STATUS_FLAG1_FELICA_LITE_ERROR = (byte)0x01;
final byte STATUS_FLAG2_SUCCESS = (byte)0x00;
final byte STATUS_FLAG2_READ_ERROR = (byte)0x70;
final byte STATUS_FLAG2_READONLY = (byte)0xA8;
final byte STATUS_FLAG2_NEED_AUTH = (byte)0xB1;
final byte STATUS_FLAG2_SERVICE_NUM_ERROR = (byte)0xA1;
final byte STATUS_FLAG2_BLOCK_NUM_ERROR = (byte)0xA2;
final byte STATUS_FLAG2_SERVICE_CODE = (byte)0xA6;
final byte STATUS_FLAG2_ACCESS_MODE = (byte)0xA7;
final byte SERVICE_CODE_READ_ONLY = 0x000B;
final byte SERVICE_CODE_READ_WRITE = 0x0009;
@Override
public void onCreate() {
Log.d("HCEFService(NFCF)","onCreate");
super.onCreate();
Toast.makeText(this, "onCreate", Toast.LENGTH_LONG).show();
}
@Override
public void onDestroy() {
Log.d("HCEFService(NFCF)","onDestroy");
super.onDestroy();
}
//onBind cannot be created
@Override
public byte[] processNfcFPacket(byte[] commandPacket, Bundle extras)
{
Log.d("HCEFService(NFCF)","processNfcFPacket: Received NFCF");
Toast.makeText(this, "processNfcFPacket", Toast.LENGTH_LONG).show();
//Error if less than required information
if (commandPacket.length < (PACKET_LENGTH_SIZE+COMMAND_TYPE_SIZE+IDM_SIZE)) {
Log.e("HCEFService(NFCF)","processNfcFPacket: Packet size too short");
return null;
}
byte commandType = commandPacket[COMMAND_TYPE_POS];
switch(commandType)
{
case CMD_POLLING: return null;//stub
case CMD_WRITE_WITHOUT_ENCRYPTION: return WriteWithoutEncryption(commandPacket);//stub
case CMD_READ_WITHOUT_ENCRYPTION: return ReadWithoutEncryption(commandPacket);//stub
default: return null; //No corresponding command
}
}
@Override
public void onDeactivated(int reason) { //When RF is disconnected
if(reason == DEACTIVATION_LINK_LOSS)
{
Log.d("HCEFService(NFCF)","onDeactivated: DEACTIVATION_LINK_LOSS");
}else{
Log.d("HCEFService(NFCF)","onDeactivated: Unknown reason");
}
}
private byte[] WriteWithoutEncryption(byte[] commandPacket)
{
Log.d("HCEFService(NFCF)","WriteWithoutEncryption");
//response
int len = PACKET_LENGTH_SIZE + RESPONSE_SIZE + IDM_SIZE + STATUS_FLAG1_SIZE + STATUS_FLAG2_SIZE;
byte[] responsePacket = new byte[len];
responsePacket[PACKET_LENGTH_POS] = (byte)len;
responsePacket[COMMAND_TYPE_POS] = RES_WRITE_WITHOUT_ENCRYPTION;
responsePacket[len-2] = STATUS_FLAG1_SUCCESS;
responsePacket[len-1] = STATUS_FLAG2_SUCCESS;
//Set IDm
responsePacket = setIDmToPacket(responsePacket,getIDm(commandPacket));
//analyze
int serviceNum = commandPacket[10]&0xFF;
if(serviceNum != 1)
{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_SERVICE_NUM_ERROR;
Log.d("HCEFService(NFCF)","SERVICE_NUM_ERROR");
return responsePacket; //ERROR RES
}
int serviceCode = (commandPacket[11]&0xFF) | ((commandPacket[12]&0xFF)<<8);
Log.d("HCEFService(NFCF)",String.format("Service code : %04X,",serviceCode));
if(serviceCode != SERVICE_CODE_READ_WRITE )
{
responsePacket[len-2] = STATUS_FLAG1_FELICA_LITE_ERROR;
responsePacket[len-1] = STATUS_FLAG2_SERVICE_CODE;
Log.d("HCEFService(NFCF)","STATUS_FLAG2_SERVICE_CODE");
return responsePacket; //ERROR RES
}
int blockNum = commandPacket[13]&0xFF;
if(blockNum != 1)
{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_BLOCK_NUM_ERROR;
Log.d("HCEFService(NFCF)","BLOCK_NUM_ERROR");
return responsePacket; //ERROR RES
}
int blockAddress = -1;
int blockHeadPos = -1;
int blocklist_1 = commandPacket[14]&0xFF;
if(blocklist_1 == 0x80)
{
//1byte
blockAddress = commandPacket[15]&0xFF;
blockHeadPos = 16;
}else if(blocklist_1 == 0x00)
{
//2byte
blockAddress = (commandPacket[15]&0xFF) | ((commandPacket[16]&0xFF)<<8);
blockHeadPos = 17;
}else{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_ACCESS_MODE;
Log.d("HCEFService(NFCF)","SERVICE_NUM_ERROR");
return responsePacket; //ERROR RES
}
Log.d("HCEFService(NFCF)",String.format("Block Address : %04X,",blockAddress));
byte data[] = new byte[BLOCK_SIZE];
System.arraycopy(commandPacket, blockHeadPos,data , 0, BLOCK_SIZE);
String debug="";
for(int i=0;i<data.length;i++)
{
debug += String.format("%02X,",data[i]);
}
Log.d("HCEFService(NFCF)",debug);
Log.d("HCEFService(NFCF)","SUCCESS");
return responsePacket; //SUCCESS
}
private byte[] ReadWithoutEncryption(byte[] commandPacket)
{
Log.d("HCEFService(NFCF)","ReadWithoutEncryption");
//response
int len = PACKET_LENGTH_SIZE + RESPONSE_SIZE + IDM_SIZE + STATUS_FLAG1_SIZE + STATUS_FLAG2_SIZE + BLOCK_NUM_SIZE + BLOCK_SIZE;
int headLen = PACKET_LENGTH_SIZE + RESPONSE_SIZE + IDM_SIZE + STATUS_FLAG1_SIZE + STATUS_FLAG2_SIZE;
byte[] responsePacket = new byte[len];
responsePacket[PACKET_LENGTH_POS] = (byte)len;
responsePacket[COMMAND_TYPE_POS] = RES_READ_WITHOUT_ENCRYPTION;
responsePacket[headLen-2] = STATUS_FLAG1_SUCCESS;
responsePacket[headLen-1] = STATUS_FLAG2_SUCCESS;
responsePacket[headLen] = ONE_BLOCK;
//Set IDm
responsePacket = setIDmToPacket(responsePacket,getIDm(commandPacket));
//analyze
int serviceNum = commandPacket[10]&0xFF;
if(serviceNum != 1)
{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_SERVICE_NUM_ERROR;
Log.d("HCEFService(NFCF)","SERVICE_NUM_ERROR");
return responsePacket; //ERROR RES
}
int serviceCode = (commandPacket[11]&0xFF) | ((commandPacket[12]&0xFF)<<8);
Log.d("HCEFService(NFCF)",String.format("Service code : %04X,",serviceCode));
if(serviceCode != SERVICE_CODE_READ_WRITE && serviceCode != SERVICE_CODE_READ_ONLY)
{
responsePacket[len-2] = STATUS_FLAG1_FELICA_LITE_ERROR;
responsePacket[len-1] = STATUS_FLAG2_SERVICE_CODE;
Log.d("HCEFService(NFCF)","STATUS_FLAG2_SERVICE_CODE");
return responsePacket; //ERROR RES
}
int blockNum = commandPacket[13]&0xFF;
if(blockNum != 1)
{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_BLOCK_NUM_ERROR;
Log.d("HCEFService(NFCF)","BLOCK_NUM_ERROR");
return responsePacket; //ERROR RES
}
int blockAddress = -1;
int blocklist_1 = commandPacket[14]&0xFF;
if(blocklist_1 == 0x80)
{
//1byte
blockAddress = commandPacket[15]&0xFF;
}else if(blocklist_1 == 0x00)
{
//2byte
blockAddress = (commandPacket[15]&0xFF) | ((commandPacket[16]&0xFF)<<8);
}else{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_ACCESS_MODE;
Log.d("HCEFService(NFCF)","SERVICE_NUM_ERROR");
return responsePacket; //ERROR RES
}
Log.d("HCEFService(NFCF)",String.format("Block Address : %04X,",blockAddress));
byte data[] = {(byte)0x00,(byte)0x01,(byte)0x02,(byte)0x03,(byte)0x04,(byte)0x05,(byte)0x06,(byte)0x07,(byte)0x08,(byte)0x09,(byte)0x0A,(byte)0x0B,(byte)0x0C,(byte)0x0D,(byte)0x0E,(byte)0x0F};
System.arraycopy(data, 0,responsePacket , headLen + BLOCK_NUM_SIZE, BLOCK_SIZE);
String debug="";
for(int i=0;i<responsePacket.length;i++)
{
debug += String.format("%02X,",responsePacket[i]);
}
Log.d("HCEFService(NFCF)",debug);
Log.d("HCEFService(NFCF)","SUCCESS");
return responsePacket;
}
private byte[] getIDm(byte[] commandPacket)
{
byte[] IDm = new byte[8];
System.arraycopy(commandPacket,2, IDm, 0, 8);
return IDm;
}
private byte[] setIDmToPacket(byte[] packet,byte[] IDm)
{
System.arraycopy(IDm, 0, packet, IDM_POS, IDM_SIZE);// NFCID2
return packet;
}
}
Separate services and processes using LocalBroadCast
hcef_service.java
package jp.ne.sakura.sabowl.gpsnmeajp.intent_hce;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.nfc.cardemulation.HostNfcFService;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
public class hcef_service extends HostNfcFService {
@Override
public void onCreate() {
super.onCreate();
Log.d("HCEFService(NFCF)","onCreate");
LocalBroadcastManager.getInstance(this).registerReceiver(mSendResponsePacketReceiver,
new IntentFilter("sendResponsePacket"));
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("HCEFService(NFCF)","onDestroy");
LocalBroadcastManager.getInstance(this).unregisterReceiver(mSendResponsePacketReceiver);
}
@Override
public byte[] processNfcFPacket(byte[] commandPacket, Bundle extras)
{
Log.d("HCEFService(NFCF)","processNfcFPacket: Received NFCF");
//Forward
Intent intent = new Intent("processNfcFPacket");
intent.putExtra("packet", commandPacket);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
return null;
}
@Override
public void onDeactivated(int reason) { //When RF is disconnected
Log.d("HCEFService(NFCF)","onDeactivated");
//Forward
Intent intent = new Intent("onDeactivated");
intent.putExtra("reason", reason);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
private BroadcastReceiver mSendResponsePacketReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
byte responsePacket[] = intent.getByteArrayExtra("packet");
sendResponsePacket(responsePacket);
Log.d("HCEFService(NFCF)","sendResponsePacket");
}
};
}
MainActivity.java
package jp.ne.sakura.sabowl.gpsnmeajp.intent_hce;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.nfc.NfcAdapter;
import android.nfc.cardemulation.NfcFCardEmulation;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity{
private String debugMsgTitle = "NFCF-TEST";
private NfcAdapter nfcAdapter;
private NfcFCardEmulation nfcFCardEmulation;
private ComponentName componentName;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(debugMsgTitle, "Create");
setContentView(R.layout.activity_main);
//------- HCE-F -------
LocalBroadcastManager.getInstance(this).registerReceiver(mProcessNfcFPacketReceiver,
new IntentFilter("processNfcFPacket"));
LocalBroadcastManager.getInstance(this).registerReceiver(mOnDeactivatedReceiver,
new IntentFilter("onDeactivated"));
PackageManager pm = getPackageManager();
if (!pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION_NFCF)) {
Log.e(debugMsgTitle,"This device not supports HCE-F.");
finish();
}else {
Log.d(debugMsgTitle, "This device supports HCE-F.");
}
nfcAdapter = NfcAdapter.getDefaultAdapter(this);
nfcFCardEmulation = NfcFCardEmulation.getInstance(nfcAdapter);
componentName = new ComponentName(
"jp.ne.sakura.sabowl.gpsnmeajp.intent_hce", //Own package name
"jp.ne.sakura.sabowl.gpsnmeajp.intent_hce.hcef_service"); //Own service name
}
@Override
protected void onResume() {
super.onResume();
Log.d(debugMsgTitle,"Resume");
Log.d(debugMsgTitle,"Enable service");
nfcFCardEmulation.enableService(this, componentName);
}
@Override
protected void onPause() {
super.onPause();
Log.d(debugMsgTitle,"Pause");
Log.d(debugMsgTitle,"Disable service");
nfcFCardEmulation.disableService(this);
}
//------------------------------------------------
final int PACKET_LENGTH_POS = 0;
final int PACKET_LENGTH_SIZE = 1;
final int COMMAND_TYPE_POS = 1;
final int COMMAND_TYPE_SIZE = 1;
final int IDM_POS = 2;
final int IDM_SIZE = 8;
final int RESPONSE_SIZE = 1;
final int STATUS_FLAG1_SIZE = 1;
final int STATUS_FLAG2_SIZE = 1;
final int BLOCK_NUM_SIZE = 1;
final int BLOCK_SIZE = 16;
final int ONE_BLOCK = 1;
//---
final byte CMD_POLLING = (byte)0x04;
final byte RES_POLLING = (byte)0x05;
final byte CMD_READ_WITHOUT_ENCRYPTION = (byte)0x06;
final byte RES_READ_WITHOUT_ENCRYPTION = (byte)0x07;
final byte CMD_WRITE_WITHOUT_ENCRYPTION = (byte)0x08;
final byte RES_WRITE_WITHOUT_ENCRYPTION = (byte)0x09;
//---
final byte STATUS_FLAG1_SUCCESS = (byte)0x00;
final byte STATUS_FLAG1_FAILED = (byte)0xFF;
final byte STATUS_FLAG1_FELICA_LITE_ERROR = (byte)0x01;
final byte STATUS_FLAG2_SUCCESS = (byte)0x00;
final byte STATUS_FLAG2_READ_ERROR = (byte)0x70;
final byte STATUS_FLAG2_READONLY = (byte)0xA8;
final byte STATUS_FLAG2_NEED_AUTH = (byte)0xB1;
final byte STATUS_FLAG2_SERVICE_NUM_ERROR = (byte)0xA1;
final byte STATUS_FLAG2_BLOCK_NUM_ERROR = (byte)0xA2;
final byte STATUS_FLAG2_SERVICE_CODE = (byte)0xA6;
final byte STATUS_FLAG2_ACCESS_MODE = (byte)0xA7;
final byte SERVICE_CODE_READ_ONLY = 0x000B;
final byte SERVICE_CODE_READ_WRITE = 0x0009;
private BroadcastReceiver mProcessNfcFPacketReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
byte commandPacket[] = intent.getByteArrayExtra("packet");
Log.d(debugMsgTitle,"processNfcFPacket");
byte responsePacket[] = processNfcFPacket(commandPacket);
//Forward
Intent responceIntent = new Intent("sendResponsePacket");
responceIntent.putExtra("packet", responsePacket);
LocalBroadcastManager.getInstance(context).sendBroadcast(responceIntent);
}
};
private BroadcastReceiver mOnDeactivatedReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
int reason = intent.getIntExtra("reason",0);
Log.d(debugMsgTitle,"onDeactivated");
}
};
public byte[] processNfcFPacket(byte[] commandPacket)
{
Log.d(debugMsgTitle,"processNfcFPacket: Received NFCF");
Toast.makeText(this, "processNfcFPacket", Toast.LENGTH_LONG).show();
Intent intent = new Intent("custom-event-name");
intent.putExtra("message", "This is my message!");
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
//Error if less than required information
if (commandPacket.length < (PACKET_LENGTH_SIZE+COMMAND_TYPE_SIZE+IDM_SIZE)) {
Log.e(debugMsgTitle,"processNfcFPacket: Packet size too short");
return null;
}
byte commandType = commandPacket[COMMAND_TYPE_POS];
switch(commandType)
{
case CMD_POLLING: return null;//stub
case CMD_WRITE_WITHOUT_ENCRYPTION: return WriteWithoutEncryption(commandPacket);//stub
case CMD_READ_WITHOUT_ENCRYPTION: return ReadWithoutEncryption(commandPacket);//stub
default: return null; //No corresponding command
}
}
private byte[] WriteWithoutEncryption(byte[] commandPacket)
{
Log.d(debugMsgTitle,"WriteWithoutEncryption");
//response
int len = PACKET_LENGTH_SIZE + RESPONSE_SIZE + IDM_SIZE + STATUS_FLAG1_SIZE + STATUS_FLAG2_SIZE;
byte[] responsePacket = new byte[len];
responsePacket[PACKET_LENGTH_POS] = (byte)len;
responsePacket[COMMAND_TYPE_POS] = RES_WRITE_WITHOUT_ENCRYPTION;
responsePacket[len-2] = STATUS_FLAG1_SUCCESS;
responsePacket[len-1] = STATUS_FLAG2_SUCCESS;
//Set IDm
responsePacket = setIDmToPacket(responsePacket,getIDm(commandPacket));
//analyze
int serviceNum = commandPacket[10]&0xFF;
if(serviceNum != 1)
{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_SERVICE_NUM_ERROR;
Log.d(debugMsgTitle,"SERVICE_NUM_ERROR");
return responsePacket; //ERROR RES
}
int serviceCode = (commandPacket[11]&0xFF) | ((commandPacket[12]&0xFF)<<8);
Log.d(debugMsgTitle,String.format("Service code : %04X,",serviceCode));
if(serviceCode != SERVICE_CODE_READ_WRITE )
{
responsePacket[len-2] = STATUS_FLAG1_FELICA_LITE_ERROR;
responsePacket[len-1] = STATUS_FLAG2_SERVICE_CODE;
Log.d(debugMsgTitle,"STATUS_FLAG2_SERVICE_CODE");
return responsePacket; //ERROR RES
}
int blockNum = commandPacket[13]&0xFF;
if(blockNum != 1)
{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_BLOCK_NUM_ERROR;
Log.d(debugMsgTitle,"BLOCK_NUM_ERROR");
return responsePacket; //ERROR RES
}
int blockAddress = -1;
int blockHeadPos = -1;
int blocklist_1 = commandPacket[14]&0xFF;
if(blocklist_1 == 0x80)
{
//1byte
blockAddress = commandPacket[15]&0xFF;
blockHeadPos = 16;
}else if(blocklist_1 == 0x00)
{
//2byte
blockAddress = (commandPacket[15]&0xFF) | ((commandPacket[16]&0xFF)<<8);
blockHeadPos = 17;
}else{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_ACCESS_MODE;
Log.d(debugMsgTitle,"SERVICE_NUM_ERROR");
return responsePacket; //ERROR RES
}
Log.d(debugMsgTitle,String.format("Block Address : %04X,",blockAddress));
byte data[] = new byte[BLOCK_SIZE];
System.arraycopy(commandPacket, blockHeadPos,data , 0, BLOCK_SIZE);
String debug="";
for(int i=0;i<data.length;i++)
{
debug += String.format("%02X,",data[i]);
}
Log.d(debugMsgTitle,debug);
Log.d(debugMsgTitle,"SUCCESS");
return responsePacket; //SUCCESS
}
private byte[] ReadWithoutEncryption(byte[] commandPacket)
{
Log.d(debugMsgTitle,"ReadWithoutEncryption");
//response
int len = PACKET_LENGTH_SIZE + RESPONSE_SIZE + IDM_SIZE + STATUS_FLAG1_SIZE + STATUS_FLAG2_SIZE + BLOCK_NUM_SIZE + BLOCK_SIZE;
int headLen = PACKET_LENGTH_SIZE + RESPONSE_SIZE + IDM_SIZE + STATUS_FLAG1_SIZE + STATUS_FLAG2_SIZE;
byte[] responsePacket = new byte[len];
responsePacket[PACKET_LENGTH_POS] = (byte)len;
responsePacket[COMMAND_TYPE_POS] = RES_READ_WITHOUT_ENCRYPTION;
responsePacket[headLen-2] = STATUS_FLAG1_SUCCESS;
responsePacket[headLen-1] = STATUS_FLAG2_SUCCESS;
responsePacket[headLen] = ONE_BLOCK;
//Set IDm
responsePacket = setIDmToPacket(responsePacket,getIDm(commandPacket));
//analyze
int serviceNum = commandPacket[10]&0xFF;
if(serviceNum != 1)
{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_SERVICE_NUM_ERROR;
Log.d(debugMsgTitle,"SERVICE_NUM_ERROR");
return responsePacket; //ERROR RES
}
int serviceCode = (commandPacket[11]&0xFF) | ((commandPacket[12]&0xFF)<<8);
Log.d(debugMsgTitle,String.format("Service code : %04X,",serviceCode));
if(serviceCode != SERVICE_CODE_READ_WRITE && serviceCode != SERVICE_CODE_READ_ONLY)
{
responsePacket[len-2] = STATUS_FLAG1_FELICA_LITE_ERROR;
responsePacket[len-1] = STATUS_FLAG2_SERVICE_CODE;
Log.d(debugMsgTitle,"STATUS_FLAG2_SERVICE_CODE");
return responsePacket; //ERROR RES
}
int blockNum = commandPacket[13]&0xFF;
if(blockNum != 1)
{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_BLOCK_NUM_ERROR;
Log.d(debugMsgTitle,"BLOCK_NUM_ERROR");
return responsePacket; //ERROR RES
}
int blockAddress = -1;
int blocklist_1 = commandPacket[14]&0xFF;
if(blocklist_1 == 0x80)
{
//1byte
blockAddress = commandPacket[15]&0xFF;
}else if(blocklist_1 == 0x00)
{
//2byte
blockAddress = (commandPacket[15]&0xFF) | ((commandPacket[16]&0xFF)<<8);
}else{
responsePacket[len-2] = STATUS_FLAG1_FAILED;
responsePacket[len-1] = STATUS_FLAG2_ACCESS_MODE;
Log.d(debugMsgTitle,"SERVICE_NUM_ERROR");
return responsePacket; //ERROR RES
}
Log.d(debugMsgTitle,String.format("Block Address : %04X,",blockAddress));
byte data[] = {(byte)0x00,(byte)0x01,(byte)0x02,(byte)0x03,(byte)0x04,(byte)0x05,(byte)0x06,(byte)0x07,(byte)0x08,(byte)0x09,(byte)0x0A,(byte)0x0B,(byte)0x0C,(byte)0x0D,(byte)0x0E,(byte)0x0F};
System.arraycopy(data, 0,responsePacket , headLen + BLOCK_NUM_SIZE, BLOCK_SIZE);
String debug="";
for(int i=0;i<responsePacket.length;i++)
{
debug += String.format("%02X,",responsePacket[i]);
}
Log.d(debugMsgTitle,debug);
Log.d(debugMsgTitle,"SUCCESS");
return responsePacket;
}
private byte[] getIDm(byte[] commandPacket)
{
byte[] IDm = new byte[8];
System.arraycopy(commandPacket,2, IDm, 0, 8);
return IDm;
}
private byte[] setIDmToPacket(byte[] packet,byte[] IDm)
{
System.arraycopy(IDm, 0, packet, IDM_POS, IDM_SIZE);// NFCID2
return packet;
}
}
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