| 1 |
//---PACKAGE DECLARATION--- |
| 2 |
package uk.ac.ukc.iscream.client.alerters; |
| 3 |
|
| 4 |
//---IMPORTS--- |
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import uk.ac.ukc.iscream.client.*; |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.util.*; |
| 8 |
import uk.ac.ukc.iscream.componentmanager.*; |
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|
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import java.io.*; |
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import java.net.*; |
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import java.util.*; |
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import java.text.*; |
| 14 |
|
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/** |
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* This Alert sends an IRC message. |
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* |
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* Clean shutdown could be achieved by stopping the run() method in the |
| 19 |
* IRCBot inner class. |
| 20 |
* |
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* @author $Author: tdb1 $ |
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* @version $Id: IRC__Alerter.java,v 1.11 2001/03/04 05:26:00 tdb1 Exp $ |
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*/ |
| 24 |
public class IRC__Alerter implements PluginAlerter { |
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|
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//---FINAL ATTRIBUTES--- |
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|
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/** |
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* The current CVS revision of this class |
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*/ |
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public final String REVISION = "$Revision: 1.11 $"; |
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|
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/** |
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* A description of this alerter |
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*/ |
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public final String DESC = "Sends alerts on an IRC channel"; |
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|
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/** |
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* The default reconnect delay in seconds |
| 40 |
*/ |
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public final int DEFAULT_RECONNECT_DELAY = 30; |
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|
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//---STATIC METHODS--- |
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|
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//---CONSTRUCTORS--- |
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|
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public IRC__Alerter() { |
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|
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// connect to the IRC server |
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_ircbot = new IRCBot(); |
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_ircbot.start(); |
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_startTime = System.currentTimeMillis(); |
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|
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_logger.write(toString(), Logger.SYSINIT, "IRC Alerter started"); |
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} |
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|
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//---PUBLIC METHODS--- |
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|
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public void sendAlert(Alert alert) { |
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// only send alerts if we're active |
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if(_active) { |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
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String levelName = cp.getProperty(_name, "Alerter.IRC.level"); |
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int level = StringUtils.getStringPos(levelName, Alert.alertLevels); |
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// only send if it's equal (or above) our level |
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if(alert.getLevel() >= level) { |
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String alertType = Alert.alertLevels[alert.getLevel()]; |
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String thresholdType = Alert.thresholdLevels[alert.getThreshold()]; |
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// sort out the message |
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String message = cp.getProperty(_name, "Alerter.IRC.message"); |
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message = StringUtils.replaceText(message, "%level%", alertType); |
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message = StringUtils.replaceText(message, "%threshold%", thresholdType); |
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message = StringUtils.replaceText(message, "%source%", alert.getSource()); |
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message = StringUtils.replaceText(message, "%value%", alert.getValue()); |
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message = StringUtils.replaceText(message, "%thresholdValue%", alert.getThresholdValue()); |
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message = StringUtils.replaceText(message, "%attributeName%", alert.getAttributeName()); |
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message = StringUtils.replaceText(message, "%timeTillNextAlert%", getTimeString(Long.parseLong(alert.getTimeTillNextAlert()))); |
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|
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// send the message |
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_logger.write(toString(), Logger.DEBUG, "Sending " + _name + " at "+ alertType + " level"); |
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_ircbot.sendMsg(message); |
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_lastAlert = message; |
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_lastAlertTime = System.currentTimeMillis(); |
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_alertCount ++; |
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} |
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} |
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} |
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|
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/** |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.NameFormat class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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*/ |
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public String toString() { |
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return FormatName.getName( |
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_name, |
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getClass().getName(), |
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REVISION); |
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} |
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|
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/** |
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* return the String representation of what the filter does |
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*/ |
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public String getDescription(){ |
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return DESC; |
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} |
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|
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//---PRIVATE METHODS--- |
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|
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private String getTimeString(long time) { |
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String timeString = null; |
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if (time >= 60) { |
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timeString = (time / 60) + " minute(s)"; |
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} else if (time >= 3600) { |
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timeString = ((time/60) / 60) + " hour(s)"; |
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} else { |
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timeString = time + " second(s)"; |
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} |
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return timeString; |
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} |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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//---ATTRIBUTES--- |
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|
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/** |
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* A reference to the IRCBot |
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*/ |
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private IRCBot _ircbot; |
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|
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/** |
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* Are we "active" |
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*/ |
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private boolean _active = false; |
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|
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/** |
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* The last alert that was sent |
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*/ |
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private String _lastAlert = "no alerts have been sent"; |
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|
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/** |
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* The time of the last alert |
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*/ |
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private long _lastAlertTime = -1; |
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|
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/** |
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* Number of alerts sent |
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*/ |
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private long _alertCount = 0; |
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|
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/** |
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* Time of IRCBot startup |
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*/ |
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private long _startTime; |
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|
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/** |
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* This is the friendly identifier of the |
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* component this class is running in. |
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* eg, a Filter may be called "filter1", |
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* If this class does not have an owning |
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* component, a name from the configuration |
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* can be placed here. This name could also |
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* be changed to null for utility classes. |
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*/ |
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private String _name = "IRC Alert"; |
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|
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/** |
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* This holds a reference to the |
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* system logger that is being used. |
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*/ |
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private Logger _logger = ReferenceManager.getInstance().getLogger(); |
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|
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//---STATIC ATTRIBUTES--- |
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|
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//---INNER CLASSES--- |
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|
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/** |
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* This class provides some basic IRCBot functionality. It connects |
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* to a specified server, and will remain there until told to |
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* leave. Whilst connected it can send a message or a notice to |
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* the server. |
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*/ |
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class IRCBot extends Thread { |
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|
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/** |
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* Main thread loop, this part of the class listens for |
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* messages from the server, and acts accordingly. At the |
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* present moment it only responds to pings. |
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*/ |
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public void run() { |
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// so we can stop if required |
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boolean run = true; |
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while(run) { |
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// flag so we can stop the loop |
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boolean doRead = true; |
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// connect to the IRC server |
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try { |
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connect(); |
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sendNotice(ConfigurationProxy.getInstance().getProperty(_name, "Alerter.IRC.startupNotice")); |
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} catch(IOException e) { |
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doRead=false; |
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_logger.write(this.toString(), Logger.ERROR, "Error connecting: "+e); |
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} |
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while(doRead) { |
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try { |
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// read a command |
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String cmd = _socketIn.readLine(); |
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// if we have a null, we've lost contact |
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if(cmd == null) { |
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throw new IOException("End of stream reached"); |
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} |
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// let another method deal with the input |
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handleInput(cmd); |
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} catch (IOException e) { |
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// comms failure, maybe our link is dead. |
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_logger.write(this.toString(), Logger.ERROR, "Communication error: "+e); |
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// stop, and loop round for a reconnect. |
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doRead = false; |
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} |
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} |
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// make sure we're disconnected |
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try { |
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disconnect(); |
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} catch (IOException e) { |
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_logger.write(this.toString(), Logger.ERROR, "Communication error: "+e); |
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} |
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|
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// comms have failed, so wait a while and reconnect |
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int delayTime = 0; |
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try { |
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delayTime = Integer.parseInt(ConfigurationProxy.getInstance().getProperty(_name, "Alerter.IRC.reconnectDelay")); |
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} catch (NumberFormatException e) { |
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delayTime = DEFAULT_RECONNECT_DELAY; |
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_logger.write(this.toString(), Logger.WARNING, "Erronous Alerter.IRC.reconnectDelay value in configuration using default of " + delayTime + " seconds"); |
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} catch (org.omg.CORBA.MARSHAL e2) { |
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delayTime = DEFAULT_RECONNECT_DELAY; |
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_logger.write(this.toString(), Logger.WARNING, "Alerter.IRC.reconnectDelay value unavailable using default of " + delayTime + " seconds"); |
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} |
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try { |
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Thread.sleep(delayTime * 1000); |
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} catch (InterruptedException e) {} |
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} |
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// maybe disconnect here ? - shutdown method not implemented yet |
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//disconnect(); |
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} |
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|
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/** |
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* Sends a message to the channel. |
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* |
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* @param msg The message to send |
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*/ |
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public void sendMsg(String msg) { |
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_socketOut.println("PRIVMSG "+_channel+" :"+msg); |
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} |
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|
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/** |
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* Sends a message to the channel. |
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* |
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* @param user The user to send to |
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* @param msg The message to send |
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*/ |
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public void sendPrivMsg(String user, String msg) { |
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_socketOut.println("PRIVMSG "+user+" :"+msg); |
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} |
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|
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/** |
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* Sends an action to the channel. |
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* |
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* @param msg the action message |
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*/ |
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public void sendAction(String msg) { |
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char esc = 001; |
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sendMsg(esc+"ACTION "+msg+esc); |
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} |
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|
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/** |
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* Sends a notice to the channel. |
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* |
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* @param msg The notice to send |
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*/ |
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public void sendNotice(String msg) { |
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_socketOut.println("NOTICE "+_channel+" :"+msg); |
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} |
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|
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/** |
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* Connect to the IRC server, log in, and join the channel. |
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* |
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* @throws IOException if the connection fails |
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*/ |
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public void connect() throws IOException { |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
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// setup the socket, reader and writer |
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String server = cp.getProperty(_name, "Alerter.IRC.IRCServer"); |
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int port = Integer.parseInt(cp.getProperty(_name, "Alerter.IRC.IRCPort")); |
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_socket = new Socket(server, port); |
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_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream())); |
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_socketOut = new PrintWriter(_socket.getOutputStream(), true); |
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//_socketOut.println("PASS"); |
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// send USER details |
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String user = cp.getProperty(_name, "Alerter.IRC.user"); |
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String comment = cp.getProperty(_name, "Alerter.IRC.comment"); |
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_socketOut.println("USER "+user+" 8 * :"+comment); |
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// attempt to get a nick |
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String nickList = cp.getProperty(_name, "Alerter.IRC.nickList"); |
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StringTokenizer st = new StringTokenizer(nickList, ";"); |
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boolean ok = false; |
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// try until we exhaust our list |
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while(!ok && st.hasMoreTokens()) { |
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String nick = st.nextToken(); |
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_socketOut.println("NICK "+nick); |
| 315 |
// get a "yes" or "no" response back |
| 316 |
String response = ""; |
| 317 |
do { |
| 318 |
response = _socketIn.readLine(); |
| 319 |
if(response==null) { |
| 320 |
throw new IOException("Communication error whilst logging in"); |
| 321 |
} |
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} while(response.indexOf("001")==-1 && response.indexOf("433")==-1); |
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// see if it was a yes |
| 324 |
if(response.indexOf("001")!=-1) { |
| 325 |
// great, we're logged in ! |
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ok = true; |
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// store the name we're using |
| 328 |
_nickname = nick; |
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} |
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else { |
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// log we couldn't get the name |
| 332 |
_logger.write(this.toString(), Logger.WARNING, "Nickname in use: "+nick); |
| 333 |
} |
| 334 |
} |
| 335 |
if(!ok) { |
| 336 |
// oh dear, we couldn't get on. |
| 337 |
throw new IOException("All nicknames in use"); |
| 338 |
} |
| 339 |
// join the channel |
| 340 |
_channel = cp.getProperty(_name, "Alerter.IRC.channel"); |
| 341 |
_socketOut.println("JOIN "+_channel); |
| 342 |
// allow alerts |
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_active = true; |
| 344 |
} |
| 345 |
|
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/** |
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* Disconnect "nicely" from the IRC server. |
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* |
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* @throws IOException if the disconnection fails |
| 350 |
*/ |
| 351 |
public void disconnect() throws IOException { |
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// stop alerts |
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_active = false; |
| 354 |
// send proper QUIT |
| 355 |
_socketOut.println("QUIT : iscreamBot component shutting down..."); |
| 356 |
// close the socket |
| 357 |
_socketOut.close(); |
| 358 |
_socketIn.close(); |
| 359 |
_socket.close(); |
| 360 |
} |
| 361 |
|
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/** |
| 363 |
* Overrides the {@link java.lang.Object#toString() Object.toString()} |
| 364 |
* method to provide clean logging (every class should have this). |
| 365 |
* |
| 366 |
* This uses the uk.ac.ukc.iscream.util.NameFormat class |
| 367 |
* to format the toString() |
| 368 |
* |
| 369 |
* @return the name of this class and its CVS revision |
| 370 |
*/ |
| 371 |
public String toString() { |
| 372 |
return FormatName.getName( |
| 373 |
_name, |
| 374 |
getClass().getName(), |
| 375 |
REVISION); |
| 376 |
} |
| 377 |
|
| 378 |
/** |
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* Deals with incoming lines from the server. |
| 380 |
* |
| 381 |
* @param line the line to deal with |
| 382 |
*/ |
| 383 |
private void handleInput(String line) { |
| 384 |
ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
| 385 |
// if it's a PING... |
| 386 |
if(line.startsWith("PING")) { |
| 387 |
// ...send a PONG |
| 388 |
_socketOut.println("PONG" + line.substring(4)); |
| 389 |
} |
| 390 |
// see if it's for us |
| 391 |
else if(getMsg(line).startsWith(_nickname+",") |
| 392 |
|| getMsg(line).startsWith(_nickname+":") |
| 393 |
|| getMsg(line).startsWith(_nickname+" ")) { |
| 394 |
// we have a message for us |
| 395 |
String message = getMsg(line).substring(_nickname.length()); |
| 396 |
if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.stopCommand"))!=-1) { |
| 397 |
_active = false; |
| 398 |
sendMsg(getMsgSender(line)+", alerts have been stopped"); |
| 399 |
} |
| 400 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.startCommand"))!=-1) { |
| 401 |
_active = true; |
| 402 |
sendMsg(getMsgSender(line)+", alerts have been activated"); |
| 403 |
} |
| 404 |
// this needs to go here if it contains the same words as the lastAlertCommand |
| 405 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.timeSinceLastAlertCommand"))!=-1) { |
| 406 |
if(_lastAlertTime != -1) { |
| 407 |
long uptime = (System.currentTimeMillis() - _lastAlertTime) / 1000; |
| 408 |
String uptimeText = DateUtils.formatTime(uptime, "%DAYS% days, %HOURS% hours, %MINS% mins, and %SECS% secs"); |
| 409 |
sendMsg(getMsgSender(line)+", I last sent an alert "+uptimeText+ " ago"); |
| 410 |
} |
| 411 |
else { |
| 412 |
sendMsg(getMsgSender(line)+", I've never sent an alert!"); |
| 413 |
} |
| 414 |
} |
| 415 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.lastAlertCommand"))!=-1) { |
| 416 |
if(_lastAlertTime != -1) { |
| 417 |
String date = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Locale.UK).format(new Date(_lastAlertTime)); |
| 418 |
sendMsg(getMsgSender(line)+", last alert was at "+date+"; "+_lastAlert); |
| 419 |
} |
| 420 |
else { |
| 421 |
sendMsg(getMsgSender(line)+", I've never sent an alert!"); |
| 422 |
} |
| 423 |
|
| 424 |
} |
| 425 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.joinCommand"))!=-1) { |
| 426 |
String joinCmd = cp.getProperty(_name, "Alerter.IRC.joinCommand"); |
| 427 |
String newChan = message.substring(message.indexOf(joinCmd) + joinCmd.length() + 1); |
| 428 |
int endOfChan = newChan.indexOf(" "); |
| 429 |
if(endOfChan == -1) { |
| 430 |
endOfChan = newChan.length(); |
| 431 |
} |
| 432 |
newChan = newChan.substring(0, endOfChan); |
| 433 |
sendMsg(getMsgSender(line)+", okay, I'm off to "+newChan); |
| 434 |
_socketOut.println("PART "+_channel); |
| 435 |
_socketOut.println("JOIN "+newChan); |
| 436 |
_channel = newChan; |
| 437 |
} |
| 438 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.nickChangeCommand"))!=-1) { |
| 439 |
String nickChangeCmd = cp.getProperty(_name, "Alerter.IRC.nickChangeCommand"); |
| 440 |
String newNick = message.substring(message.indexOf(nickChangeCmd) + nickChangeCmd.length() + 1); |
| 441 |
int endOfNick = newNick.indexOf(" "); |
| 442 |
if(endOfNick == -1) { |
| 443 |
endOfNick = newNick.length(); |
| 444 |
} |
| 445 |
newNick = newNick.substring(0, endOfNick); |
| 446 |
sendMsg(getMsgSender(line)+", okay, changing my nickname to "+newNick); |
| 447 |
_socketOut.println("NICK "+newNick); |
| 448 |
_nickname = newNick; |
| 449 |
} |
| 450 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.versionCommand"))!=-1) { |
| 451 |
sendMsg(getMsgSender(line)+", I am version "+REVISION.substring(11, REVISION.length() -2)+" of the i-scream alerting bot"); |
| 452 |
} |
| 453 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.helpCommand"))!=-1) { |
| 454 |
sendPrivMsg(getMsgSender(line), "Hello, I am the i-scream alerting bot version "+REVISION.substring(11, REVISION.length() -2)); |
| 455 |
sendPrivMsg(getMsgSender(line), "I understand the following commands;"); |
| 456 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.stopCommand")); |
| 457 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.startCommand")); |
| 458 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.lastAlertCommand")); |
| 459 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.joinCommand")); |
| 460 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.nickChangeCommand")); |
| 461 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.statCommand")); |
| 462 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.uptimeCommand")); |
| 463 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.timeSinceLastAlertCommand")); |
| 464 |
sendPrivMsg(getMsgSender(line), cp.getProperty(_name, "Alerter.IRC.helpCommand")); |
| 465 |
} |
| 466 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.statCommand"))!=-1) { |
| 467 |
sendMsg(getMsgSender(line)+", I have sent a total of "+_alertCount+" alerts!"); |
| 468 |
} |
| 469 |
else if(message.indexOf(cp.getProperty(_name, "Alerter.IRC.uptimeCommand"))!=-1) { |
| 470 |
long uptime = (System.currentTimeMillis() - _startTime) / 1000; |
| 471 |
String uptimeText = DateUtils.formatTime(uptime, "%DAYS% days, %HOURS% hours, %MINS% mins, and %SECS% secs"); |
| 472 |
sendMsg(getMsgSender(line)+", I have been running for "+uptimeText); |
| 473 |
} |
| 474 |
else if(message.indexOf("do a jibble dance")!=-1) { |
| 475 |
// little joke :) |
| 476 |
sendAction("jives to the funky beat shouting \"ii--screeeaaammm\""); |
| 477 |
} |
| 478 |
else { |
| 479 |
sendMsg(getMsgSender(line)+", "+cp.getProperty(_name, "Alerter.IRC.rejectMessage")); |
| 480 |
} |
| 481 |
} |
| 482 |
else if(line.indexOf(_nickname)!=-1 && line.indexOf(_channel)!=-1 && line.indexOf("KICK")!=-1) { |
| 483 |
sendPrivMsg(getMsgSender(line), "That wasn't a nice thing to do..."); |
| 484 |
_channel = cp.getProperty(_name, "Alerter.IRC.channel"); |
| 485 |
_socketOut.println("JOIN "+_channel); |
| 486 |
} |
| 487 |
} |
| 488 |
|
| 489 |
/** |
| 490 |
* Strips the header from a message line |
| 491 |
* |
| 492 |
* @param line the line to strip |
| 493 |
* @return the message from the line |
| 494 |
*/ |
| 495 |
private String getMsg(String line) { |
| 496 |
String result = ""; |
| 497 |
if(line.indexOf("PRIVMSG")!=-1) { |
| 498 |
int firstColon = line.indexOf(":"); |
| 499 |
if(firstColon != -1) { |
| 500 |
int secondColon = line.indexOf(":", firstColon+1); |
| 501 |
if(secondColon != -1) { |
| 502 |
result = line.substring(secondColon+1); |
| 503 |
} |
| 504 |
} |
| 505 |
} |
| 506 |
return result; |
| 507 |
} |
| 508 |
|
| 509 |
/** |
| 510 |
* Finds out the sender of the message |
| 511 |
* |
| 512 |
* @param line the line to look for a sender in |
| 513 |
* @return the sender |
| 514 |
*/ |
| 515 |
private String getMsgSender(String line) { |
| 516 |
String result = ""; |
| 517 |
int colon = line.indexOf(":"); |
| 518 |
int excl = line.indexOf("!"); |
| 519 |
if(colon!=-1 && excl!=-1) { |
| 520 |
result = line.substring(colon+1, excl); |
| 521 |
} |
| 522 |
return result; |
| 523 |
} |
| 524 |
|
| 525 |
/** |
| 526 |
* The socket connected to the server |
| 527 |
*/ |
| 528 |
private Socket _socket; |
| 529 |
|
| 530 |
/** |
| 531 |
* The writer |
| 532 |
*/ |
| 533 |
private PrintWriter _socketOut; |
| 534 |
|
| 535 |
/** |
| 536 |
* The reader |
| 537 |
*/ |
| 538 |
private BufferedReader _socketIn; |
| 539 |
|
| 540 |
/** |
| 541 |
* Just a reminder to what channel we're on... |
| 542 |
* this can't be dynamic :) |
| 543 |
*/ |
| 544 |
private String _channel; |
| 545 |
|
| 546 |
/** |
| 547 |
* A reminder of our current nickname... |
| 548 |
*/ |
| 549 |
private String _nickname; |
| 550 |
|
| 551 |
} |
| 552 |
|
| 553 |
} |
