GiFTDaemon.java
| Index Score | ||
|---|---|---|
 |
 |
org.xnap.plugin.gift.net |
 |
 |
XNap 3 |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| EXITS | Procedure exits |  |
| BLOCKS | Number of blocks | |
| DECL_COMMENTS | Comments in declarations | |
| LOC | Lines of code | |
| CYCLOMATIC | Cyclomatic complexity | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERANDS | Number of operands | |
| ELOC | Effective lines of code | |
| UNIQUE_OPERANDS | Number of unique operands | |
| LOGICAL_LINES | Number of statements | |
| LINE_COMMENT | Number of line comments | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| LINES | Number of lines in the source file | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0008 | JAVA0008 Empty catch block | |
| COMPARISONS | Number of comparison operators | |
| LOOPS | Number of loops | |
| FUNCTIONS | Number of function declarations | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| SIZE | Size of the file in bytes | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0143 | JAVA0143 Synchronized method | |
| RETURNS | Number of return points from functions | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0254 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0082 | JAVA0082 Unnecessary widening cast | |
| WHITESPACE | Number of whitespace lines | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0123 | JAVA0123 Use all three components of for loop | |
| JAVA0179 | JAVA0179 Local variable hides visible field | |
| JAVA0171 | JAVA0171 Unused local variable | |
| UNIQUE_OPERATORS | Number of unique operators | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0007 | JAVA0007 Should not declare public field | |
| JAVA0144 | JAVA0144 Line exceeds maximum M characters | |
| NEST_DEPTH | Maximum nesting depth | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0109 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0095 | JAVA0095 Uninitialized private field | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
/*
* XNap - A P2P framework and client.
*
* See the file AUTHORS for copyright information.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.xnap.plugin.gift.net;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.Socket;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Vector;
import org.apache.log4j.Logger;
import org.xnap.XNap;
import org.xnap.net.NetHelper;
import org.xnap.peer.Peer;
import org.xnap.plugin.gift.GiFTPlugin;
import org.xnap.plugin.gift.net.event.ControlEvent;
import org.xnap.plugin.gift.net.event.SearchControlEvent;
import org.xnap.plugin.gift.net.event.SearchItemEvent;
import org.xnap.plugin.gift.net.event.ShareItemEvent;
import org.xnap.plugin.gift.net.event.UploadUpdatedEvent;
import org.xnap.plugin.gift.net.lexer.Command;
import org.xnap.plugin.gift.net.lexer.StreamLexer;
import org.xnap.transfer.DownloadManager;
import org.xnap.transfer.UploadManager;
import org.xnap.util.FiniteStateMachine;
import org.xnap.util.IllegalOperationException;
import org.xnap.util.Scheduler;
import org.xnap.util.State;
import org.xnap.util.XNapTask;
/**
* Handles a connection to a single giFT daemon.
*
* @author Tammo van Lessen
* @author Steffen Pingel
*/
public class GiFTDaemon {
/**
* The poll intervall for network stats.
*/
public static final int NETWORK_STATS_INTERVAL = 3 * 60 * 1000; // 3 min
private static final Hashtable TRANSITION_TABLE;
static {
State[][] table = new State[][] {
{ org.xnap.util.State.DISCONNECTED,
org.xnap.util.State.CONNECTING, },
{ org.xnap.util.State.CONNECTING,
org.xnap.util.State.CONNECTED, org.xnap.util.State.DISCONNECTED },
{ org.xnap.util.State.CONNECTED,
org.xnap.util.State.DISCONNECTING, },
{ org.xnap.util.State.DISCONNECTING,
org.xnap.util.State.DISCONNECTED },
};
TRANSITION_TABLE = FiniteStateMachine.createStateTable(table);
}
long NetworkStatsTimer = 0;
private Logger logger = Logger.getLogger(GiFTDaemon.class);
private Hashtable downloads;
private Hashtable uploads;
private Hashtable searches;
private String host;
private String serverName;
private String serverVersion;
private String user;
private Vector listeners = new Vector();
private int port;
private StateMachine sm = new StateMachine();
private String message;
private String username;
private String stats;
private String verboseMessage;
//--- Constructors ---
/**
*
*/
public GiFTDaemon(String host, int port, String user)
{
this.host = host;
this.port = port;
this.user = user;
}
//--- Methods ---
/**
* Adds an event listener.
*
* @param listener the listener
*/
public void addDaemonListener(GiFTDaemonListener listener)
{
listeners.add(listener);
}
public void addDownload(GiFTSearchResult sr)
{
Command cmd = new Command("addsource");
cmd.addKey("hash", (String)sr.getHash());
cmd.addKey("size", Long.toString(sr.getFilesize()));
cmd.addKey("url", sr.getUrl());
cmd.addKey("user", ((GiFTUser) sr.getPeer()).getUsername());
// TODO
cmd.addKey("save", sr.getShortFilename());
queueCommand(cmd);
}
public void changeDownload(GiFTDownloadContainer dc, String action)
{
Command cmd = new Command("transfer");
cmd.setCommandArgument(dc.getGID());
cmd.addKey("action", action);
queueCommand(cmd);
}
public void changeSearch(GiFTSearch s, String action)
{
Command cmd = new Command("search");
cmd.setCommandArgument(s.getGID());
cmd.addKey("action", action);
queueCommand(cmd);
}
public void changeUpload(GiFTUpload u, String action)
{
Command cmd = new Command("transfer");
cmd.setCommandArgument(u.getGID());
cmd.addKey("action", action);
queueCommand(cmd);
}
public void deleteSource(GiFTDownloadContainer dc, String url)
{
Command cmd = new Command("delsource");
cmd.setCommandArgument(dc.getGID());
cmd.addKey("url", url);
queueCommand(cmd);
}
// private void fireMessageReceived(String message)
// {
// GiFTDaemonListener[] l
// = (GiFTDaemonListener[])listeners.toArray(new GiFTDaemonListener[0]);
// for (int i = 0; i < l.length; i++) {
// l[i].messageReceived(this, message);
// }
// }
//
// private void fireStatsUpdated(String stats)
// {
// GiFTDaemonListener[] l
// = (GiFTDaemonListener[])listeners.toArray(new GiFTDaemonListener[0]);
// for (int i = 0; i < l.length; i++) {
// l[i].statsUpdated(this, stats);
// }
// }
private void fireStatusChanged()
{
GiFTDaemonListener[] l
= (GiFTDaemonListener[])listeners.toArray(new GiFTDaemonListener[0]);
for (int i = 0; i < l.length; i++) {
l[i].statusChanged(this);
}
}
protected GiFTDownloadContainer getDownloadContainer
(String filename, String hash, long size)
{
GiFTDownloadContainer dc = (GiFTDownloadContainer)downloads.get(hash);
if (dc == null || dc.isDone()) {
dc = new GiFTDownloadContainer(this, filename, hash, size);
downloads.put(hash, dc);
DownloadManager.getInstance().add(dc);
}
return dc;
}
public String getHost()
{
return host;
}
public String getMessage()
{
return message;
}
public int getPort()
{
return port;
}
// protected GiFTUpload getUpload(String filename, String hash, long size)
// {
// GiFTUpload u = (GiFTUpload)uploads.get(hash);
// if (u == null) {
// u = new GiFTUpload(filename, hash, size);
// uploads.put(hash, u);
// UploadManager.getInstance().add(u);
// }
// return u;
// }
public String getUsername()
{
return username;
}
public String getStats()
{
return stats;
}
public String getStatus()
{
StringBuffer sb = new StringBuffer();
sb.append("<html>");
sb.append(getServerInfo());
if (getStats() != null) {
sb.append("<br>");
sb.append(getStats());
}
if (getMessage() != null) {
sb.append("<hr");
sb.append(getMessage());
}
return sb.toString();
}
/**
* Returns giFT server's name and version as String
*
* @return server info
*/
public String getServerInfo()
{
if (sm.getState() == org.xnap.util.State.CONNECTED && serverName != null) {
// only send version if set, daemons compiled from cvs for
// instance do not send a version
return "<b>" + serverName + "</b>"
+ ((serverVersion != null) ? " v" + serverVersion : "");
}
else {
return sm.getDescription();
}
}
public String getVerboseMessage()
{
return verboseMessage;
}
public boolean isConnected()
{
return sm.getState() == org.xnap.util.State.CONNECTED;
}
public boolean isDisconnected()
{
return sm.getState() == org.xnap.util.State.DISCONNECTED;
}
/**
* Searches for more sources for dc.
*/
public void locate(GiFTDownloadContainer dc)
{
String gid = GIDManager.createGID() + "";
searches.put(gid, dc);
Command cmd = new Command("locate");
cmd.setCommandArgument(Integer.toString(dc.hashCode()));
cmd.addKey("query", dc.getHash());
queueCommand(cmd);
}
protected void queueCommand(Command cmd)
{
synchronized (sm) {
if (sm.getState() == org.xnap.util.State.CONNECTED) {
sm.getWriter().enqueue(cmd);
}
}
}
/**
* Removes an event listener.
*
* @param listener
*/
public void removeDaemonListener(GiFTDaemonListener listener)
{
listeners.remove(listener);
}
/**
* Forces giFT to send network stats
*/
public synchronized void updateNetworkStats()
{
Command cmd = new Command("stats");
queueCommand(cmd);
}
/**
* Forces giFT to list its shares
*/
public void updateShareListing()
{
Command cmd = new Command("shares");
queueCommand(cmd);
}
/**
* Adds a new search
*
* @param sf SearchFilter
*/
public void search(GiFTSearch s)
{
String gid = GIDManager.createGID() + "";
searches.put(gid, s);
s.setGID(gid);
Command cmd = new Command("search");
cmd.setCommandArgument(gid);
cmd.addKey("query", s.getFilter().getText());
queueCommand(cmd);
s.searchStarted(new SearchControlEvent(ControlEvent.STARTED));
}
/**
* Sets giFT host
*
* @param host
*/
public void setHost(String host)
{
this.host = host;
}
/**
* Sets giFT port
*
* @param port
*/
public void setPort(int port)
{
this.port = port;
}
void setState(State newState, String description)
{
sm.setState(newState, description);
fireStatusChanged();
}
void setState(State newState)
{
sm.setState(newState);
fireStatusChanged();
}
void setStateDescription(String description)
{
sm.setDescription(description);
fireStatusChanged();
}
/**
* Sets giFT user name
*
* @param user
*/
public void setUsername(String username) {
this.username = username;
}
public void setVerboseMessage(Exception e)
{
if (e == null) {
verboseMessage = null;
}
else if (e instanceof ConnectException) {
// connection refused
StringBuffer sb = new StringBuffer();
sb.append("<br><p>");
sb.append(XNap.tr("Could not connect to giFT daemon. This can have several reasons:"));
sb.append("<ol><li>");
sb.append(XNap.tr("<b>giFT is not installed</b>. This plugin requires an external programm called giFT that handles the network connection. Please see http://gift.sf.net/ for more information and download links."));
sb.append("<li>");
sb.append(XNap.tr("The plugin <b>settings are incorrect</b>, e.g. the giFT daemon port is wrong. Please check the settings under Settings -> Configure Plugins."));
sb.append("<li>");
sb.append(XNap.tr("The <b>giFT daemon is not running</b>. Please click the Start button on the giFT daemon panel."));
sb.append("</ol>");
verboseMessage = sb.toString();
}
}
/**
* Connects to the daemon.
*/
public void start()
{
setState(org.xnap.util.State.CONNECTING);
}
/**
* Disconnects the daemon.
*/
public void stop(boolean killGiFT)
{
Command cmd
= (killGiFT) ? new Command("quit") : new Command("detach");
queueCommand(cmd);
}
/**
* Forces giFT to sync its shares index
*/
public void syncShares()
{
Command cmd = new Command("share");
cmd.addKey("action", "sync");
queueCommand(cmd);
}
/**
* Dispatches incomming commands.
*/
private void dispatchCommand(Command cmd)
{
if (cmd.getCommand().equalsIgnoreCase("ATTACH")) {
serverName = cmd.getKey("server");
serverVersion = cmd.getKey("version");
fireStatusChanged();
}
else if (cmd.getCommand().equalsIgnoreCase("STATS")) {
StringBuffer sb = new StringBuffer();
Vector subCommands = cmd.getSubCommands();
for (int i = 0; i < subCommands.size(); i++) {
Command subCmd = (Command)subCommands.get(i);
if (subCmd.getKey("files") != null
&& subCmd.getKey("size") != null) {
try {
String protocol
= (subCmd.getCommand().equalsIgnoreCase("gift"))
? XNap.tr("Local")
: subCmd.getCommand();
String s;
if (subCmd.getKey("users") != null) {
s = XNap.tr
("{0}: {1} Files, {2} Users, {3} GB",
protocol,
new Long((String)subCmd.getKey("files")),
new Long((String)subCmd.getKey("users")),
new Float((String)subCmd.getKey("size")));
}
else {
s = XNap.tr
("{0}: {1} Files, {2} GB",
protocol,
new Long((String)subCmd.getKey("files")),
new Float((String)subCmd.getKey("size")));
}
if (sb.length() > 0) {
sb.append("<br>");
}
sb.append(s);
}
catch (NumberFormatException e) {
}
}
}
this.stats = sb.toString();
fireStatusChanged();
}
else if (cmd.getCommand().equalsIgnoreCase("ITEM")) {
if (cmd.getCommandArgument() == null) {
if (cmd.hasKeys()) {
// received share item
ShareItemEvent se = new ShareItemEvent();
se.setPath(cmd.getKey("path"));
try {
se.setSize(Long.parseLong(cmd.getKey("size")));
} catch (Exception e) {
}
se.setMime(cmd.getKey("mime"));
se.setHash(cmd.getKey("hash"));
Command meta = cmd.getSubCommandByName("META");
if (meta != null) {
Enumeration keys = meta.getKeys();
while (keys.hasMoreElements()) {
String key = (String) keys.nextElement();
se.addMetaItem(key, meta.getKey(key));
}
}
}
else {
// finished receiving shares
}
}
else {
if (cmd.hasKeys()) {
// received search item
if ((cmd.getKey("file") == null) ||
(cmd.getKey("hash") == null) ||
(cmd.getKey("node") == null) ||
(cmd.getKey("url") == null)) {
logger.debug("Received invalied search result");
return;
}
long size = -1;
try {
size = Long.parseLong(cmd.getKey("size"));
}
catch (NumberFormatException e) {
}
int score = 1;
try {
score = Integer.parseInt(cmd.getKey("availability"));
}
catch (NumberFormatException e) {
}
Hashtable meta = new Hashtable();
Command metaCmd = cmd.getSubCommandByName("META");
if (metaCmd != null) {
Enumeration keys = metaCmd.getKeys();
while (keys.hasMoreElements()) {
String key = (String) keys.nextElement();
meta.put(key, metaCmd.getKey(key));
}
}
Peer user = new GiFTUser(cmd.getKey("user"));
GiFTSearchResult sr =
new GiFTSearchResult
(this,
size,
user,
cmd.getKey("file"),
cmd.getKey("hash"),
cmd.getKey("node"),
cmd.getKey("mime"),
cmd.getKey("url"),
score,
meta);
Object searcher = searches.get(cmd.getCommandArgument());
logger.debug(searcher);
if (searcher instanceof GiFTSearch) {
GiFTSearch search =
(GiFTSearch) searches.get(cmd.getCommandArgument());
search.searchItemReceived(
new SearchItemEvent(search.getFilter(), sr));
}
else if (searcher instanceof GiFTDownloadContainer){
addDownload(sr);
}
}
else {
// search finished
GiFTSearch search
= (GiFTSearch)searches.get(cmd.getCommandArgument());
if (search != null) {
searches.remove(cmd.getCommandArgument());
search.searchFinished
(new SearchControlEvent(ControlEvent.FINISHED));
}
}
}
}
else if (cmd.getCommand().equalsIgnoreCase("ADDDOWNLOAD")) {
String filename = cmd.getKey("file");
String hash = cmd.getKey("hash");
long size = -1;
try {
size = Long.parseLong(cmd.getKey("size"));
} catch (Exception e) {
}
long transmit = -1;
try {
transmit = Long.parseLong(cmd.getKey("transmit"));
} catch (Exception e) {
}
GiFTDownloadContainer dc =
getDownloadContainer(filename, hash, size);
dc.setState(cmd.getKey("state"));
dc.setGID(cmd.getCommandArgument());
dc.setTotalBytesTransferred(transmit);
dc.setOffset(transmit);
addSources(cmd, dc);
}
else if (cmd.getCommand().equalsIgnoreCase("CHGDOWNLOAD")) {
GiFTDownloadContainer dc =
(GiFTDownloadContainer)downloads.get(cmd.getKey("hash"));
if (dc != null) {
if (cmd.getKey("throughput") != null) {
try {
dc.setCurrentRate
(Long.parseLong(cmd.getKey("throughput")));
}
catch (NumberFormatException e) {
}
}
if (cmd.getKey("transmit") != null) {
try {
dc.setTotalBytesTransferred
(Long.parseLong(cmd.getKey("transmit")));
}
catch (NumberFormatException e) {
}
}
dc.setState(cmd.getKey("state"));
addSources(cmd, dc);
}
}
else if (cmd.getCommand().equalsIgnoreCase("ADDUPLOAD")) {
String filename = cmd.getKey("file");
String hash = cmd.getKey("hash");
long size = -1;
try {
size = Long.parseLong(cmd.getKey("size"));
} catch (Exception e) {
}
long transmit = -1;
try {
transmit = Long.parseLong(cmd.getKey("transmit"));
} catch (Exception e) {
}
GiFTUpload u = (GiFTUpload)uploads.get(hash);
if (u == null) {
u = new GiFTUpload(new GiFTUser(cmd.getKey("user")),
cmd.getKey("url"), size, transmit);
u.setGID(cmd.getCommandArgument());
uploads.put(hash, u);
UploadManager.getInstance().add(u);
}
u.setStatus(cmd.getKey("state"));
//fireEvent(new DownloadAddedEvent(dc));
} else if (cmd.getCommand().equalsIgnoreCase("CHGUPLOAD")) {
String filename = cmd.getKey("file");
String hash = cmd.getKey("hash");
long size = -1;
try {
size = Long.parseLong(cmd.getKey("size"));
} catch (Exception e) {
}
long transmit = -1;
try {
transmit = Long.parseLong(cmd.getKey("transmit"));
} catch (Exception e) {
}
long elapsed = -1;
try {
elapsed = Long.parseLong(cmd.getKey("elapsed"));
} catch (Exception e) {
}
long throughput = -1;
try {
throughput = Long.parseLong(cmd.getKey("throughput"));
} catch (Exception e) {
}
String state = cmd.getKey("state");
GiFTUpload u =
(GiFTUpload) uploads.get(cmd.getKey("hash"));
if (u != null) {
UploadUpdatedEvent due = new UploadUpdatedEvent();
due.setElapsed(elapsed);
due.setFilename(filename);
due.setHash(hash);
due.setSize(size);
due.setState(state);
due.setThroughput(throughput);
due.setTransmit(transmit);
// fire event directly
u.uploadUpdated(due);
}
} else if (cmd.getCommand().equalsIgnoreCase("DELUPLOAD")) {
Enumeration it = uploads.elements();
while (it.hasMoreElements()) {
GiFTUpload u = (GiFTUpload) it.nextElement();
if (u.getGID().equals(cmd.getCommandArgument())) {
u.uploadCanceled();
}
}
} else if (cmd.getCommand().equalsIgnoreCase("DELDOWNLOAD")) {
Enumeration it = downloads.elements();
while (it.hasMoreElements()) {
GiFTDownloadContainer dc = (GiFTDownloadContainer) it.nextElement();
if (dc.getGID().equals(cmd.getCommandArgument())) {
dc.deleted();
}
}
} else if (cmd.getCommand().equalsIgnoreCase("MESSAGE")) {
message = cmd.getCommandArgument();
fireStatusChanged();
}
}
private void addSources(Command cmd, GiFTDownloadContainer dc)
{
dc.markChildren();
Vector v = cmd.getAllSubCommandsByName("source");
Iterator i = v.iterator();
while (i.hasNext()) {
Command c = (Command)i.next();
GiFTDownload d = dc.getSourceByURL(c.getKey("url"));
if (d == null) {
d = dc.addSource(new GiFTUser(c.getKey("user")),
c.getKey("url"));
}
if (c.getKey("start") != null
&& c.getKey("transmit") != null
&& c.getKey("total") != null) {
try {
d.updated(Long.parseLong(c.getKey("start")),
Long.parseLong(c.getKey("transmit")),
Long.parseLong(c.getKey("total")));
}
catch (NumberFormatException e) {
}
}
d.setMarked(false);
d.setState(c.getKey("statusgrl"), c.getKey("status"));
}
dc.orphanMarkedChildren();
}
private class ReaderThread extends Thread
{
private InputStream in;
private OutputStream out;
private Socket socket;
private boolean stopped = false;
public ReaderThread()
{
super("GiFTDeamonReader " + getHost() + ":" + getPort());
}
public void die()
{
stopped = true;
interrupt();
}
public OutputStream getOutputStream()
{
return out;
}
public void run()
{
setVerboseMessage(null);
try {
logger.debug("Connecting to giFT damon @"
+ getHost() + ":" + getPort());
Socket socket = new Socket(getHost(), getPort());
socket.setSoTimeout(NETWORK_STATS_INTERVAL * 2);
in = new BufferedInputStream(socket.getInputStream());
out = socket.getOutputStream();
}
catch (IOException e) {
setState(org.xnap.util.State.DISCONNECTED, NetHelper.getErrorMessage(e));
setVerboseMessage(e);
return;
}
setState(org.xnap.util.State.CONNECTED);
try {
StreamLexer lexer = new StreamLexer(in);
while (!stopped) {
Command cmd = readNextCommand();
if (cmd != null) {
if (XNap.isRunFromCvs()) {
logger.debug("< " + cmd.print());
}
dispatchCommand(cmd);
}
}
}
catch (IOException e) {
try {
setState(org.xnap.util.State.DISCONNECTING,
NetHelper.getErrorMessage(e));
}
catch (IllegalOperationException e2) {
// disconnect is already in progress
}
}
finally {
try {
if (socket != null) {
socket.close();
}
}
catch (IOException e) {
}
}
sm.readerStopped();
}
private Command readNextCommand() throws IOException
{
StringBuffer sb = new StringBuffer();
while (!stopped) {
int cint = in.read();
if (cint == -1) {
throw new IOException(XNap.tr("Socket closed"));
}
else if (cint == ';') {
break;
}
sb.append((char)cint);
}
Command cmd = new Command();
return (stopped || !cmd.parse(sb.toString().trim() + ";"))
? null
: cmd;
}
}
private class WriterThread extends Thread
{
private OutputStream out;
private LinkedList outQueue = new LinkedList();
private boolean stopped = false;
private WriterThread(OutputStream out)
{
super("GiFTDeamonWriter " + getHost() + ":" + getPort());
this.out = out;
}
public synchronized void enqueue(Command cmd)
{
outQueue.addLast(cmd);
notify();
}
public void die()
{
stopped = true;
interrupt();
}
public void run()
{
try {
while (!stopped) {
synchronized (this) {
while (!stopped && outQueue.isEmpty()) {
try {
this.wait();
}
catch (InterruptedException e) {
}
}
}
if (stopped) {
break;
}
Command cmd = (Command) outQueue.removeFirst();
if (XNap.isRunFromCvs()) {
logger.debug("> " + cmd.print());
}
out.write(cmd.print().getBytes());
}
}
catch (IOException e) {
try {
setState(org.xnap.util.State.DISCONNECTING,
NetHelper.getErrorMessage(e));
}
catch (IllegalOperationException e2) {
// disconnect is already in progress
}
}
sm.writerStopped();
}
}
private class StateMachine extends FiniteStateMachine
{
private StatsRequestorTask statsRequestor;
private ReaderThread reader;
private WriterThread writer;
public StateMachine()
{
super(org.xnap.util.State.DISCONNECTED, TRANSITION_TABLE);
}
public WriterThread getWriter()
{
return writer;
}
public void readerStopped()
{
synchronized (this) {
reader = null;
if (writer == null) {
GiFTDaemon.this.setState(org.xnap.util.State.DISCONNECTED);
}
}
}
public void writerStopped()
{
boolean disconnected = false;
synchronized (this) {
writer = null;
if (reader == null) {
disconnected = true;
}
}
if (disconnected) {
GiFTDaemon.this.setState(org.xnap.util.State.DISCONNECTED);
}
}
protected synchronized void stateChanged(State oldState,
State newState)
{
if (newState == org.xnap.util.State.CONNECTING) {
downloads = new Hashtable();
uploads = new Hashtable();
searches = new Hashtable();
message = null;
stats = null;
reader = new ReaderThread();
reader.start();
}
else if (newState == org.xnap.util.State.CONNECTED) {
writer = new WriterThread(reader.getOutputStream());
writer.start();
Command cmd = new Command("attach");
cmd.addKey("client", "XNap");
cmd.addKey("version",
GiFTPlugin.getInstance().getInfo().getVersion());
if (username != null) {
cmd.addKey("profile", username);
}
queueCommand(cmd);
statsRequestor = new StatsRequestorTask();
Scheduler.run(0, NETWORK_STATS_INTERVAL, statsRequestor);
}
else if (newState == org.xnap.util.State.DISCONNECTING) {
statsRequestor.cancel();
statsRequestor = null;
reader.die();
if (writer != null) {
writer.die();
}
}
else if (newState == org.xnap.util.State.DISCONNECTED) {
for (Iterator i = downloads.values().iterator(); i.hasNext();) {
DownloadManager.getInstance().remove
((GiFTDownloadContainer)i.next());
}
for (Iterator i = uploads.values().iterator(); i.hasNext();) {
UploadManager.getInstance().remove
((GiFTUpload)i.next());
}
// fix: remove uploads
}
}
}
private static class GIDManager {
public static int MIN_GID = 1;
/**
* The maximum allowed gid to be used by the client as a session-id
* as confirmed by jasta in irc chat.
*/
public static int MAX_GID = 32767; // 2^15 - 1
public static int last = MIN_GID - 1;
/**
* Returns a unique id.
*/
public static int createGID()
{
return (++last > MAX_GID) ? last = MIN_GID : last;
}
}
/**
* Resends the download request in regular intervals.
*/
private class StatsRequestorTask extends XNapTask
{
public StatsRequestorTask()
{
}
public void run()
{
updateNetworkStats();
}
}
}
The table below shows all metrics for GiFTDaemon.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 176.00 | Number of blocks | |
| BLOCK_COMMENT | 18.00 | Number of block comment lines | |
| COMMENTS | 138.00 | Comment lines | |
| COMMENT_DENSITY | 0.23 | Comment density | |
| COMPARISONS | 86.00 | Number of comparison operators | |
| CYCLOMATIC | 156.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 50.00 | Comments in declarations | |
| DOC_COMMENT | 78.00 | Number of javadoc comment lines | |
| ELOC | 594.00 | Effective lines of code | |
| EXEC_COMMENTS | 12.00 | Comments in executable code | |
| EXITS | 149.00 | Procedure exits | |
| FUNCTIONS | 54.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 0.38 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 95.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 3.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 17.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains non-protected constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 0.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 7.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 1.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 1.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 5.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 1.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 8.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 2.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 1.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 2.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 2.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 27.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 2.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 3.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 1.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 3.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 2.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 2761.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 9.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 2.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 1.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 2.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 3.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 1.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| JAVA0289 | 4.00 | null | |
| LINES | 1108.00 | Number of lines in the source file | |
| LINE_COMMENT | 42.00 | Number of line comments | |
| LOC | 820.00 | Lines of code | |
| LOGICAL_LINES | 356.00 | Number of statements | |
| LOOPS | 13.00 | Number of loops | |
| NEST_DEPTH | 6.00 | Maximum nesting depth | |
| OPERANDS | 1779.00 | Number of operands | |
| OPERATORS | 3333.00 | Number of operators | |
| PARAMS | 36.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 5112.00 | Halstead program length | |
| PROGRAM_VOCAB | 571.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 59.00 | Number of return points from functions | |
| SIZE | 25732.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 515.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 56.00 | Number of unique operators | |
| WHITESPACE | 150.00 | Number of whitespace lines | |