Java 2 Applet How to leave Sandbox

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Stefan Werner - 28 Jan 2004 11:05 GMT

I'm trying to run a applet in Netscape 7 (Uses Java 1.4.1).

The applet is for reading a file from the local users harddisk.

I know there is the possibility to change the policy file of the user, but
that I don't want to do.

I also tried to cretificate the applet whith a self generated certificate
and I accept the certificate in the browser but I get all the time these
security exception. "access denied (java.io.FilePermission)"

Can anybody help

thanks

Stefan

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Ben_ - 28 Jan 2004 12:49 GMT

> I know there is the possibility to change the policy file of the user, but
> that I don't want to do.

AFAIK, grating permissions is required. It can be done by modifying the
local .policy file or by pointing to a remote file in the .security file
(policy.url property).

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BarryNL - 29 Jan 2004 11:47 GMT

>>I know there is the possibility to change the policy file of the user, but
>>that I don't want to do.
>
> AFAIK, grating permissions is required. It can be done by modifying the
> local .policy file or by pointing to a remote file in the .security file
> (policy.url property).

Agreed, I believe that accepting the certificate only says 'I believe
this certificate really does belong to this person'. The user still has
to grant code signed by that person permission to read the filesystem in
their .policy file.

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unixisbetter - 12 Feb 2004 21:49 GMT

If you are willing to go to the trouble (and pay for it), you could get a Java codesigning certificate from Thawte or Verisign and sign your applet. This would eliminate the sandbox limitations altogether.

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Java 2 Applet How to leave Sandbox

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