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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.filter.plugins; |
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|
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.filter.PluginServiceCheck; |
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import java.net.*; |
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import java.io.*; |
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|
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/** |
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* A quick SSH service checker. |
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* |
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* @author $Author: tdb1 $ |
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* @version $Id: SSH__ServiceCheck.java,v 1.1 2001/03/07 13:04:44 tdb1 Exp $ |
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*/ |
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public class SSH__ServiceCheck implements PluginServiceCheck { |
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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: 1.1 $"; |
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|
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public final String DESC = "Checks that an SSH server is alive."; |
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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 METHODS--- |
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|
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/** |
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* Performs the service check on a given host. |
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* |
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* @param hostname the host to check |
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* @return XML data representing the result of the test |
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*/ |
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public String runServiceCheck(String hostname){ |
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String status = ""; |
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String message = ""; |
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try { |
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Socket socket = new Socket(hostname, 22); |
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BufferedReader socketIn = new BufferedReader(new InputStreamReader(socket.getInputStream())); |
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String response = socketIn.readLine(); |
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if(response.startsWith("SSH")) { |
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status = "0"; |
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message = "Good Header received: "+response; |
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} |
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else { |
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status = "1"; |
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message = "Bad Header received: "+response; |
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} |
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socketIn.close(); |
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socket.close(); |
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} catch (Exception e) { |
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status = "1"; |
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message = "Service check failed to establish connection to host: " + e.getMessage(); |
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} |
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// send the results back |
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return "<SSH status=\"" + status + "\" message=\"" + message + "\"></SSH>"; |
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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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//---ACCESSOR/MUTATOR METHODS--- |
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|
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//---ATTRIBUTES--- |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
