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POHow do I grant a site's applet an AllPermission privilege?
 

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  1. POHow do I grant a site's applet an AllPermission privilege?
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    <p>I'd like to specify certain applets to run with <code>java.security.AllPermission</code> on my computer (for debugging and security testing). However, I don't want to enable <em>all</em> applets that I run to have this permission. So, editing my user Java policy file (which I have ensured is the correct policy file through testing), I try to put this value:</p> <pre><code>grant codeBase "http://host_where_applet_lives/-" { permission java.security.AllPermission; }; </code></pre> <p>This value fails when the applet tries to do something powerful (create a new Thread, in my case). However, when I put the following value:</p> <pre><code>grant { permission java.security.AllPermission; }; </code></pre> <p>The applet is able to perform the powerful operation. The only difference is the lack of a <code>codeBase</code> attribute. </p> <p>An answer to a similar question asked here [1] seemed to suggest (but never show or prove) that <code>AccessController.doPrivileged()</code> calls may be required. To me, this sounds wrong as I don't need that call when I grant the permissions to all applets (the second example I showed). Even if this is a solution, littering the applets I run with <code>AccessController.doPrivileged()</code> calls is not easy or necessarily possible. To top it off, my tests show that this just doesn't work anyway. But I'm happy to hear more ideas around it.</p> <p>[1] <a href="https://stackoverflow.com/questions/1751412/cant-get-allpermission-configured-for-intranet-applet-can-anyone-help">Can&#39;t get AllPermission configured for intranet applet. Can anyone help?</a></p>
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    1. USnahsra
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    1. COThe `doPrivileged` in that comment refers to an applet being called by JavaScript through LiveConnect. Be extremely careful with `doPrivileged`, and with trusted code in general.
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      1. POHow do I grant a site's applet an AllPermission privilege?
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    2. COYes, but it indicates that doPrivileged() does -anything- special when running under AllPermission, which I assert it should not.
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