git-svn-id: http://webgoat.googlecode.com/svn/trunk@6 4033779f-a91e-0410-96ef-6bf7bf53c507

webgoat/main/project/org/owasp/webgoat/util/ThreadWatcher.java

@@ -0,0 +1,90 @@
+package org.owasp.webgoat.util;
+
+import java.util.BitSet;
+
+
+/**
+ *  Copyright (c) 2002 Free Software Foundation developed under the custody of
+ *  the Open Web Application Security Project (http://www.owasp.org) This
+ *  software package org.owasp.webgoat.is published by OWASP under the GPL. You should read and
+ *  accept the LICENSE before you use, modify and/or redistribute this software.
+ *
+ *@author     jwilliams@aspectsecurity.com
+ *@created    November 6, 2002
+ */
+public class ThreadWatcher implements Runnable
+{
+    // time to live in milliseconds
+    private BitSet myInterrupted;
+    private Process myProcess;
+    private int myTimeout;
+
+    /**
+     *  Constructor for the ThreadWatcher object
+     *
+     *@param  p            Description of the Parameter
+     *@param  interrupted  Description of the Parameter
+     *@param  timeout      Description of the Parameter
+     */
+    public ThreadWatcher(Process p, BitSet interrupted, int timeout)
+    {
+        myProcess = p;
+
+        // thread used by whoever constructed this watcher
+        myTimeout = timeout;
+        myInterrupted = interrupted;
+    }
+
+    /*
+     *  Interrupt the thread by marking the interrupted bit and killing the process
+     */
+
+    /**
+     *  Description of the Method
+     */
+    public void interrupt()
+    {
+        myInterrupted.set(0);
+
+        // set interrupted bit (bit 0 of the bitset) to 1
+        myProcess.destroy();
+
+        /*
+         *  try
+         *  {
+         *  myProcess.getInputStream().close();
+         *  }
+         *  catch( IOException e1 )
+         *  {
+         *  / do nothing -- input streams are probably already closed
+         *  }
+         *  try
+         *  {
+         *  myProcess.getErrorStream().close();
+         *  }
+         *  catch( IOException e2 )
+         *  {
+         *  / do nothing -- input streams are probably already closed
+         *  }
+         *  myThread.interrupt();
+         */
+    }
+
+
+    /**
+     *  Main processing method for the ThreadWatcher object
+     */
+    public void run()
+    {
+        try
+        {
+            Thread.sleep(myTimeout);
+        }
+        catch (InterruptedException e)
+        {
+            // do nothing -- if watcher is interrupted, so is thread
+        }
+
+        interrupt();
+    }
+}