package org.litesoft.p2pchat;
import java.io.*;
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//
// All Software available from LiteSoft.org (including this file) is
// hereby released into the public domain.
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// NO Warranty!
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//
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// (for a particular purpose), level of errors (or lack thereof), or
// applicability of this software. The entire risk as to the quality
// and performance of this software is with you. Should this software
// prove defective, you assume the cost of all necessary servicing, repair
// or correction.
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// software, be liable to you for damages, including any general,
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// other programs), even if such holder or other party has been advised
// of the possibility of such damages.
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// NOTE: Should you discover a bug, have a recogmendation for a change, wish
// to submit modifications, or wish to add new classes/functionality,
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/**
* @author Devin Smith and George Smith
* @version 0.4 04/07/13 Added name for thread
* Close PeerReader & PeerWriter on close
* Add DONE message type
* @version 0.3 02/02/02 Added IllegalArgument.ifNull for all public params that may not be null
* @version 0.2 01/28/02 Refactored and Added Licence
* @version 0.1 12/27/01 Initial Version
*/
public class ActivePeer extends Thread {
public static final String CHAT = "CHAT ";
public static final String HELO = "HELO ";
public static final String PMSG = "PMSG ";
public static final String NAME = "NAME ";
public static final String PEER = "PEER ";
public static final String DONE = "DONE ";
private MyInfo zMyInfo;
private UserDialog zUserDialog;
private ActivePeersSupport zActivePeersSupport;
private NewPeersSupport zNewPeersSupport;
private PeerInfo zPeerInfo;
private PeerReader zReader;
private PeerWriter zWriter;
public ActivePeer(MyInfo pMyInfo, UserDialog pUserDialog,
ActivePeersSupport pActivePeersSupport,
NewPeersSupport pNewPeersSupport,
PeerInfo pPeerInfo, InputStream pIs, OutputStream pOs) {
this(pMyInfo, pUserDialog, pActivePeersSupport, pNewPeersSupport, pPeerInfo, new PeerReader(pIs), new PeerWriter(pOs));
}
public ActivePeer(MyInfo pMyInfo, UserDialog pUserDialog,
ActivePeersSupport pActivePeersSupport,
NewPeersSupport pNewPeersSupport,
PeerInfo pPeerInfo, PeerReader reader, PeerWriter writer) {
IllegalArgument.ifNull("MyInfo", zMyInfo = pMyInfo);
IllegalArgument.ifNull("UserDialog", zUserDialog = pUserDialog);
IllegalArgument.ifNull("ActivePeersSupport", zActivePeersSupport = pActivePeersSupport);
IllegalArgument.ifNull("NewPeersSupport", zNewPeersSupport = pNewPeersSupport);
IllegalArgument.ifNull("PeerInfo", zPeerInfo = pPeerInfo);
zReader = reader;
zWriter = writer;
setName("Active Peer Thread");
start();
}
public PeerInfo getPeerInfo() {
return zPeerInfo;
}
public void sendNAME() {
send(formatNAME());
}
public void sendPMSG(String pMessage) {
IllegalArgument.ifNull("Message", pMessage);
send(formatPMSG(pMessage));
}
public void sendCHAT(String pMessage) {
IllegalArgument.ifNull("Message", pMessage);
send(formatCHAT(pMessage));
}
public void finish() {
send(DONE);
}
public void run() {
send(formatHELO());
for (String line; null != (line = zReader.readLine());) {
processCommand(line);
if (line.equals(DONE)) {
break;
}
}
close();
zActivePeersSupport.removeActivePeer(this);
zUserDialog.showDisconnect(zPeerInfo);
}
public synchronized void close() {
zReader.close();
zWriter.close();
}
private void processCommand(String pLine) {
if (pLine.trim().length() == 0)
return;
String cmdParams;
try {
if (null != (cmdParams = checkForCommand(pLine, CHAT))) {
processCHAT(cmdParams);
return;
}
if (null != (cmdParams = checkForCommand(pLine, HELO))) {
processHELO(cmdParams);
return;
}
if (null != (cmdParams = checkForCommand(pLine, PMSG))) {
processPMSG(cmdParams);
return;
}
if (null != (cmdParams = checkForCommand(pLine, NAME))) {
processNAME(cmdParams);
return;
}
if (null != (cmdParams = checkForCommand(pLine, PEER))) {
processPEER(cmdParams);
return;
}
}
catch (Exception e) {
System.err.println("Caught "+e.getClass().getName()+" processing command "+pLine);
e.printStackTrace();
return;
}
if ("BYE".equals(pLine)) {
zWriter.close();
return;
}
zUserDialog.showUnrecognized(zPeerInfo, pLine);
}
private String checkForCommand(String pLine, String pCmd) {
return pLine.startsWith(pCmd) ? pLine.substring(pCmd.length()).trim() : null;
}
private void send(String pMessage) {
zWriter.writeLine(pMessage);
}
private String formatCHAT(String pMessage) {
return CHAT + pMessage;
}
private void processCHAT(String pCmdParams) {
zUserDialog.showCHAT(zPeerInfo, pCmdParams);
}
private String formatPMSG(String pMessage) {
return PMSG + pMessage;
}
private void processPMSG(String pCmdParams) {
zUserDialog.showPMSG(zPeerInfo, pCmdParams);
}
private String formatNAME() {
return "NAME " + zMyInfo.getChatName();
}
private void processNAME(String pCmdParams) {
if (!pCmdParams.equals(zPeerInfo.getChatName())) {
zPeerInfo.setChatName(pCmdParams);
zUserDialog.showNAME(zPeerInfo);
}
}
private String formatHELO() {
return "HELO " + zMyInfo.format();
}
private void processHELO(String pCmdParams) {
PeerInfo pi = PeerInfo.deFormat(pCmdParams);
if (pi != null) {
zPeerInfo.updateWith(pi);
PeerInfo[] peers = zActivePeersSupport.getPeerInfos();
for (int i = peers.length; i-- > 0;)
if (!zPeerInfo.equals(peers[i]))
send(formatPEER(peers[i]));
zUserDialog.showHELO(zPeerInfo);
}
}
private String formatPEER(PeerInfo pPeerInfo) {
return PEER + pPeerInfo.format();
}
private void processPEER(String pCmdParams) {
PeerInfo pi = PeerInfo.deFormat(pCmdParams);
if (pi != null) {
zNewPeersSupport.addNewPeer(pi);
}
}
}