File	Doc	Category	Size	Date	Package
Connection.java	API Doc	phoneME MR2 API (J2ME)	5731	Wed May 02 18:00:38 BST 2007	com.sun.satsa.util

Connection

• java.lang.Object

Fields Summary
public int	lastSW The last response APDU status word.
private byte[]	command Temporary buffer for APDU command.
private int	offset Current offset in the command buffer.
private com.sun.midp.io.j2me.apdu.Handle	h APDU connection handle.
private int	unitSize Unit size for the read command
private byte	CLAbyte CLAbyte for the send command

Constructors Summary
public Connection(com.sun.midp.io.j2me.apdu.Handle h) Constructs new connection object. param h APDU connection handle. this.h = h; command = new byte[255];

Methods Summary
public void	done() Safely closes the connection. try { if (h != null) { APDUManager.closeConnection(h); } } catch (IOException e) {} // ignore h = null;
public byte[]	getATR() This method returns the ATR received from the card that this Handle object is used to communicate with. return ATR information received from the card at startup or reset. In case of I/O troubles returns null. return h.getATR();
public byte[]	getFCI() This method returns the FCI received from the card that this Handle object is used to communicate with. return FCI information received from the card at startup or reset. In case of I/O troubles returns null. return h.getFCI();
public com.sun.satsa.util.Connection	putByte(int data) Places one byte into command buffer. param data byte to be placed return this connection object command[offset++] = (byte) data; return this;
public com.sun.satsa.util.Connection	putBytes(byte[] data, int off, int length) Places the byte sequence into the buffer. param data data to be placed param off data offset param length data length return this connection object System.arraycopy(data, off, command, offset, length); offset += length; return this;
public com.sun.satsa.util.Connection	putShort(int data) Places short value into the buffer. param data value to be placed return this connection object command[offset++] = (byte) (data >> 8); command[offset++] = (byte) data; return this;
public com.sun.satsa.util.Connection	resetCommand() Resets command buffer. return this connection object offset = 5; return this;
public byte[]	sendCommand(int INS, int P1P2) Sends the command. param INS INS byte for this command. param P1P2 APDU parameters value return response APDU throws IOException if IO error occurs return sendCommand(INS, P1P2, 240, true);
public byte[]	sendCommand(int INS, int P1P2, int LE, boolean check) Sends the command. param INS INS byte for this command. param P1P2 P1 and P2 values for this command param LE response expected length param check if true, verify that SW is 0x9000 return response APDU throws IOException if IO error occurs command[0] = (byte) (CLAbyte | h.channel); command[1] = (byte) INS; command[2] = (byte) (P1P2 >> 8); command[3] = (byte) P1P2; command[4] = (byte) (offset - 5); putByte(LE); byte[] tmp = APDUManager.exchangeAPDU(h, command); lastSW = ((tmp[tmp.length - 2] & 0xff) << 8) | (tmp[tmp.length - 1] & 0xff); if (check && lastSW != 0x9000) { throw new IOException("SW = " + Integer.toHexString(lastSW)); } return tmp;
public void	setCLAbyte(byte cla) This method sets value for the CLAbyte variable param cla byte Required value. this.CLAbyte = cla;
public void	setUnitSize(int unitSize) This method sets value for the unitSize variable param unitSize int Required value. this.unitSize = unitSize;