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/**
* Implementation of a tcp-based syslog server.
*
* This is a limited-capability implementation of a syslog tcp server.
*
* @author Rainer Gerhards
*
* Copyright 2009 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of rsyslog.
*
* Rsyslog 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, either version 3 of the License, or
* (at your option) any later version.
*
* Rsyslog 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 Rsyslog. If not, see http://www.gnu.org/licenses/.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
package com.rsyslog.lib;
import com.rsyslog.lib.SyslogMsgConsumer;
import java.io.*;
import java.net.*;
/** a small test consumer */
/*
class TestConsumer implements SyslogMsgConsumer {
public void consumeMsg(String ln) {
System.out.println("Line received '" + ln + "'\n");
}
}
*/
public class SyslogServerTCP extends Thread {
private ServerSocket lstnSock;
private boolean contRun; /* continue processing requests? */
public SyslogMsgConsumer consumer;
/** Process a single connection */
class Session extends Thread {
private Socket sock;
private SyslogServerTCP srvr;
public Session(Socket so, SyslogServerTCP _srvr) {
sock = so;
srvr = _srvr;
}
public void run() {
try {
BufferedReader data = new BufferedReader(
new InputStreamReader(sock.getInputStream()));
String ln = data.readLine();
while(ln != null) {
srvr.getConsumer().consumeMsg(ln);
ln = data.readLine();
}
System.out.println("End of Session.\n");
sock.close();
}
catch(Exception e) {
/* we ignore any errors we may have... */
System.out.println("Session exception " + e.toString());
}
}
}
/** a small test driver */
/*
public static void main(String args[]) {
try {
SyslogMsgConsumer cons = new TestConsumer();
System.out.println("Starting server on port " + args[0] + "\n");
SyslogServerTCP myServ = new
SyslogServerTCP(Integer.parseInt(args[0]), cons);
myServ.start();
System.out.println("Press ctl-c to terminate\n");
}
catch(Exception e) {
System.out.println("Fehler! " + e.toString());
}
}
*/
public SyslogServerTCP(int port, SyslogMsgConsumer cons) throws java.io.IOException {
if(lstnSock != null)
terminate();
lstnSock = new ServerSocket(port);
consumer = cons;
contRun = true;
}
public void terminate() {
contRun = false;
}
public SyslogMsgConsumer getConsumer() {
return consumer;
}
public void run() {
try {
while(contRun) {
Socket sock = lstnSock.accept();
System.out.println("New connection request! " + sock.toString());
Thread sess = new Session(sock, this);
sock = null;
sess.start();
}
}
catch(Exception e) {
System.out.println("Error during server run " + e.toString());
}
}
}
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