Re: Java Applet Security Problem

Subject: Re: Java Applet Security Problem

From: Michael Hall <email@hidden>

Date: Mon, 1 May 2006 10:09:17 -0500

Delivered-to: email@hidden

On May 1, 2006, at 9:27 AM, Prasad Rajagopal wrote:

Hi,

       The loadLibrary() method is called (internally) by the thrid party wrapper class(not my code). Also tried to give the exact module/filename with the exact filename extension. But still gave me this error.

           _javascript_:

                    java.security.AcessControlException: access denied

                    java.lang.RuntimePermission loadLibrary.pkcs11wrapper)

Sorry on this one. There is a java.security.AccessControlException class and I didn't find it earlier for some reason...

showc java.security.AccessControlException

showc: invoked with: java.security.AccessControlException

public class java.security.AccessControlException extends java.lang.SecurityException {

// Constructors

public java.security.AccessControlException(java.lang.String);

public java.security.AccessControlException(java.lang.String, java.security.Permission);

// Fields

private static final long serialVersionUID;

private java.security.Permission perm;

// Methods

public java.security.Permission getPermission();

}

If you could catch the exception here and indicate what permission is required?

<<< Here're the permissions you've got: >>>
<<< java.security.Permissions@7cd15d (
(java.io.FilePermission read)
)

This looks to be the only permission you actually have.

Assuming you can't do that and this is 1.5 I did just discover you can do this (With Safari, untested FireFox).

Start java preferences

/Applications/Utilities/Java/J2SE 5.0/Java Preferences

First make sure you get the console when an applet runs.

From the Advanced settings "Java console" should have "Show console" selected.

Then what I discovered is that from the "General" settings you can set the security debug property in the "Java Applet Runtime Parameters" text area.

For example

-Djava.security.debug=all

-Djava.security.debug=access,failure

Then when your applet runs the security debug information will appear in the java console.

Again if you can determine exactly what Permission you don't have you would then understand the source of your problem. How you fix it I don't know, but knowing that would probably have to be first?

Mike Hall mikehall at spacestar dot net

http://www.spacestar.net/users/mikehall

http://sourceforge.net/projects/macnative

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References:

>Re: Java Applet Security Problem (From: "Prasad Rajagopal" <email@hidden>)