NoExitSecurityManager.java

package abbot;

public abstract class NoExitSecurityManager extends SecurityManager {
    private Exception creation;
    public NoExitSecurityManager() {
        class CreationLocationException extends Exception { 
        	private static final long serialVersionUID = 1L;        	
        }
        creation = new CreationLocationException();
    }

    public void checkPermission(java.security.Permission perm, 
                                Object context) {
        // allow everything
    }
    public void checkPermission(java.security.Permission perm) {
        // allow everything
    }
    public void checkExit(int status) {
        // We only want to disallow Runtime.halt/Runtime.exit 
        // Anything else is ok (e.g. System.runFinalizersOnExit; some VMs do a
        // check there as well -- 1.3 and prior, I think)
        String stack = Log.getStack(Log.FULL_STACK);
        if (stack.indexOf("java.lang.Runtime.exit") != -1
            || stack.indexOf("java.lang.Runtime.halt") != -1) {
            exitCalled(status);
            String msg = "Application exit denied";
            Log.log(msg + " from security manager "
                    + "created at " + Log.getStack(Log.FULL_STACK, creation));
            throw new ExitException(msg, status);
        }
    }
    /** Implement this method to do any context-specific cleanup.  This
        hook is provided since it may not always be possible to catch the
        ExitException explicitly (like when it's caught by someone else, or
        thrown from the event dispatch thread).
    */
    protected abstract void exitCalled(int status);
}