/**
* Write all the blocks in a Tag to the Mifare tag.
*
* @param t
* @throws IOException
*/
public void write(Tag t) throws IOException {
if (t.getSectorCount() > mKeys.getSectorCount()) throw new IOException("Too few keys");
mTag.connect();
int sectors = mTag.getSectorCount();
try {
for (int s = 0; s < sectors; ++s) {
// Authenticate for each sector (try B key, then A key)
if (!mTag.authenticateSectorWithKeyB(s, mKeys.getKeyB(s))
&& !mTag.authenticateSectorWithKeyA(s, mKeys.getKeyA(s)))
throw new IOException("Auth error");
// Write to tag. Skip block 0 and the trailer of each sector
int blockOffset = mTag.sectorToBlock(s);
int lastBlock = blockOffset + mTag.getBlockCountInSector(s);
// Skip block 0
blockOffset = blockOffset == 0 ? 1 : blockOffset;
for (int b = blockOffset; b < lastBlock; ++b) {
mTag.writeBlock(b, t.getBlock(b));
if (mProgressListener != null)
mProgressListener.publishProgress((100 * b) / t.getBlockCount());
}
}
} finally {
mTag.close();
}
}
private void resolveIntent(Intent intent) {
String action = intent.getAction();
toast("resolving intent");
if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(action)) {
toast("RESOLVE THIS INTENT");
Tag tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
receiveTab.append("\nResolve Intent for NDEF discovery");
} else if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)) {
Tag tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
MifareClassic mfc = MifareClassic.get(tagFromIntent);
byte[] data;
receiveTab.append("\nNew tech tag received");
try {
mfc.connect();
boolean auth = false;
String cardData = null;
int secCount = mfc.getSectorCount();
int bCount = 0;
int bIndex = 0;
for (int j = 0; j < secCount; j++) {
auth = mfc.authenticateSectorWithKeyA(j, MifareClassic.KEY_DEFAULT);
if (auth) {
bCount = mfc.getBlockCountInSector(j);
bIndex = 0;
for (int i = 0; i < bCount; i++) {
bIndex = mfc.sectorToBlock(j);
data = mfc.readBlock(bIndex);
cardData = new String(data);
receiveTab.append("\n" + cardData);
bIndex++;
}
} else {
Toast.makeText(this, "Auth failed", Toast.LENGTH_LONG).show();
}
}
} catch (IOException ex) {
Toast.makeText(this, "IO Error while attempting to read mifare", Toast.LENGTH_LONG).show();
}
} else if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(action)) {
receiveTab.append("\nSome Tag found from card");
Tag tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
receiveTab.append("\n" + tagFromIntent.toString());
for (int k = 0; k < tagFromIntent.getTechList().length; k++) {
receiveTab.append("\nTech List: " + tagFromIntent.getTechList()[k]);
if (tagFromIntent.getTechList()[k].equals("android.nfc.tech.NfcA")) {
// Run connection method
parseNfcATag(tagFromIntent);
// connectToNDEF(tagFromIntent);
// parseMifareTag(tagFromIntent);
} else if (tagFromIntent.getTechList()[k].equals("android.nfc.tech.Ndef")) {
connectToNDEF(tagFromIntent);
// receiveTab.append("\nRun connect to NDEF");
}
}
}
}
/**
* Set the mapping range for {@link #buildNextKeyMapPart()}.
*
* @param firstSector Index of the first sector of the key map.
* @param lastSector Index of the last sector of the key map.
* @return True if range parameters were correct. False otherwise.
*/
public boolean setMappingRange(int firstSector, int lastSector) {
if (firstSector >= 0 && lastSector < mMFC.getSectorCount() && firstSector <= lastSector) {
mFirstSector = firstSector;
mLastSector = lastSector;
// Init. status of buildNextKeyMapPart to create a new key map.
mKeyMapStatus = lastSector + 1;
return true;
}
return false;
}
/**
* Test if all the keys in the KeyChain are valid, i.e. can be used for authenticating.
*
* @return true if all A and B keys can be used to authenticate, false otherwise.
* @throws IOException
*/
public boolean testKeys() throws IOException {
// Tag and key sector count mismatch.
// Need at least as many keys as there are sectors.
if (mTag.getSectorCount() > mKeys.getSectorCount()) return false;
mTag.connect();
try {
for (int i = 0; i < mTag.getSectorCount(); ++i) {
if (!mTag.authenticateSectorWithKeyA(i, mKeys.getKeyA(i))
|| !mTag.authenticateSectorWithKeyB(i, mKeys.getKeyB(i))) {
return false;
}
}
} finally {
mTag.close();
}
return true;
}
/**
* Read all blocks from the Mifare tag and return the data in a Tag object.
*
* @return A Tag object containing the data of the Mifare tag.
* @throws IOException
*/
public Tag read() throws IOException {
int sectors = mTag.getSectorCount();
Tag t = new Tag(TagType.getType(sectors));
if (t.getSectorCount() > mKeys.getSectorCount()) throw new IOException("Too few keys");
mTag.connect();
try {
for (int s = 0; s < sectors; ++s) {
byte[] aKey = mKeys.getKeyA(s);
byte[] bKey = mKeys.getKeyB(s);
// Authenticate for each sector (try A key, then B key)
if (!mTag.authenticateSectorWithKeyA(s, aKey) && !mTag.authenticateSectorWithKeyB(s, bKey))
throw new IOException("Auth error");
// Read every block of the sector
int blockOffset = mTag.sectorToBlock(s);
int lastBlock = blockOffset + mTag.getBlockCountInSector(s);
for (int b = blockOffset; b < lastBlock; ++b) {
byte[] readBuffer = mTag.readBlock(b);
// Manually transfer key data to tag since it is usually not
// readable
if (b == lastBlock - 1) {
for (int i = 0; i < Tag.KEY_SIZE; ++i) {
readBuffer[i] = aKey[i];
readBuffer[Tag.BLOCK_SIZE - Tag.KEY_SIZE + i] = bKey[i];
}
}
t.setBlock(b, readBuffer);
if (mProgressListener != null)
mProgressListener.publishProgress((100 * b) / t.getBlockCount());
}
}
return t;
} finally {
mTag.close();
}
}
/**
* Write a block of 16 byte data to tag.
*
* @param sectorIndex The sector to where the data should be written
* @param blockIndex The block to where the data should be written
* @param data 16 byte of data.
* @param key The Mifare Classic key for the given sector.
* @param useAsKeyB If true, key will be treated as key B for authentication.
* @return The return codes are:<br>
* <ul>
* <li>0 - Everything went fine.
* <li>1 - Sector index is out of range.
* <li>2 - Block index is out of range.
* <li>3 - Data are not 16 byte.
* <li>4 - Authentication went wrong.
* <li>-1 - Error while writing to tag.
* </ul>
*
* @see #authenticate(int, byte[], boolean)
*/
public int writeBlock(
int sectorIndex, int blockIndex, byte[] data, byte[] key, boolean useAsKeyB) {
if (mMFC.getSectorCount() - 1 < sectorIndex) {
return 1;
}
if (mMFC.getBlockCountInSector(sectorIndex) - 1 < blockIndex) {
return 2;
}
if (data.length != 16) {
return 3;
}
if (!authenticate(sectorIndex, key, useAsKeyB)) {
return 4;
}
// Write block.
int block = mMFC.sectorToBlock(sectorIndex) + blockIndex;
try {
mMFC.writeBlock(block, data);
} catch (IOException e) {
Log.e(LOG_TAG, "Error while writing block to tag.", e);
return -1;
}
return 0;
}
/**
* Return the sector count of the Mifare Classic tag.
*
* @return The sector count of the current tag.
*/
public int getSectorCount() {
return mMFC.getSectorCount();
}
private void resolveIntent(Intent intent) {
// 1) Parse the intent and get the action that triggered this intent
String action = intent.getAction();
// 2) Check if it was triggered by a tag discovered interruption.
if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)) {
mydialog = ProgressDialog.show(ReadCardActivity.this, "loading", "loading");
// 3) Get an instance of the TAG from the NfcAdapter
Tag tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
// 4) Get an instance of the Mifare classic card from this TAG
// intent
MifareClassic mfc = MifareClassic.get(tagFromIntent);
MifareClassCard mifareClassCard = null;
try {
// 5.1) Connect to card
mfc.connect();
// 5.2) and get the number of sectors this card has..and loop
// thru these sectors
int secCount = mfc.getSectorCount();
mifareClassCard = new MifareClassCard(secCount);
// init information
String techtemp = "";
for (String tech : mfc.getTag().getTechList()) {
techtemp = techtemp + tech + "\n";
}
mifareClassCard.addValue("UID", Converter.getHexString(mfc.getTag().getId()));
mifareClassCard.addValue("TechList", techtemp);
// mifareClassCard.addValue("MemorySize", mfc.get);
int bCount = 0;
int bIndex = 0;
for (int j = 0; j < secCount; j++) {
boolean authKeyA = false;
boolean authKeyB = false;
MifareSector mifareSector = new MifareSector();
mifareSector.sectorIndex = j;
// 6.1) authenticate the sector
for (String key : defaultKeys) {
if (!authKeyA) {
authKeyA = mfc.authenticateSectorWithKeyA(j, Converter.hexStringToByteArray(key));
mifareSector.keyA = new MifareKey(Converter.hexStringToByteArray(key));
}
if (!authKeyB) {
authKeyB = mfc.authenticateSectorWithKeyB(j, Converter.hexStringToByteArray(key));
mifareSector.keyB = new MifareKey(Converter.hexStringToByteArray(key));
}
// 都满足则break
if (authKeyA && authKeyB) {
break;
}
}
if ((authKeyA && authKeyB) || authKeyA || authKeyB) {
mifareSector.authorized = true;
// 6.2) In each sector - get the block count
bCount = mfc.getBlockCountInSector(j);
bCount = Math.min(bCount, MifareSector.BLOCKCOUNT);
bIndex = mfc.sectorToBlock(j);
// set access condition
byte[] acdata = mfc.readBlock(bIndex + 3);
String hexString = Converter.getHexString(acdata, 16);
mifareSector.accessCondition = hexString.substring(12, 20);
for (int i = 0; i < bCount; i++) {
// 6.3) Read the block
byte[] data = mfc.readBlock(bIndex);
// System.out.println(Converter.getHexString(data, 16));
MifareBlock mifareBlock = new MifareBlock(mifareSector);
mifareBlock.setData(data);
mifareBlock.setIndex(bIndex);
// 7) Convert the data into a string from Hex
// format.
bIndex++;
mifareSector.blocks[i] = mifareBlock;
}
mifareClassCard.setSector(mifareSector.sectorIndex, mifareSector);
} else { // Authentication failed - Handle it
mifareSector.authorized = false;
}
}
this.mydialog.dismiss();
mfc.close();
Intent dataIntent = new Intent(this, ViewCardActivity.class);
Bundle bundle = new Bundle();
bundle.putSerializable("mifare", mifareClassCard);
dataIntent.putExtras(bundle);
this.startActivityForResult(dataIntent, 0);
this.finish();
} catch (IOException e) {
Log.e(TAG, e.getLocalizedMessage());
showAlert(3);
this.mydialog.dismiss();
} finally {
if (mifareClassCard != null) {
// mifareClassCard.debugPrint();
}
}
} // End of IF
} // End of method