"John R. Cary" wrote:
>
> Hi John,
>
> Thanks for the information. FYI, to use most things
> I do not need to sign the applet, because I have
> added the line,
>
> user_pref("signed.applets.codebase_principal_support", true);
>
> to my netscape preferences file. (See
> http://developer.netscape.com/docs/manuals/signedobj/capabilities/index.html.)
I see, so that allows codebases to be unsigned. Can the codebase have
any URL, or is it somehow restricted to be "within the intranet"?
>
> This allows me to enable application privileges. It seems that
> NetCDF requires more than just the UniversalFileAccess
> privilege, so I was hoping you might know.
hmmm, I would have thought that all you need is file access. try
catching the exception and calling e.printStackTrace(), that should
narrow it down.
>
> Are the NetCDF mailing lists archived?
searchable, they dont seem to be browsable:
http://www.unidata.ucar.edu/glimpsedocs/ghnetcdf.html
Im pretty sure you wont see this specific problem in there.
>
> Thanks again.....John
>
> On Tue, 18 Jul 2000, John Caron wrote:
>
> >
> > > >To: support@xxxxxxxxxxxxxxxx
> > > >From: "John R. Cary" <cary@xxxxxxxxxx>
> > > >Subject: NetCDF Java Applet Capable?
> > > >Organization:
> > > >Keywords: 200007181820.e6IIKsT11192
> > >
> > > I have been trying to use the NetCDF package within an applet through
> > > Netscape .4.7 on Windows. I have enable UniversalFileAccess, but
> > > the code still dies. My code sample is:
> > >
> > > try { // This must be in the same block?
> > > netscape.security.PrivilegeManager.enablePrivilege(
> > > "UniversalFileAccess");
> > > appendLine("Netscape privileges obtained.");
> > > }
> > > catch (NoClassDefFoundError
> > > ex){appendLine("NoClassDefFoundError");}
> > > catch (Exception ex){appendLine("Exception");}
> > > appendLine("Will save to file " + fileName + " in directory " +
> > > sliceDir + ".");
> > > File netCdfFile = new File(sliceDir, fileName);
> > > appendLine("File '" + fileName + "' created.");
> > > nc = new NetcdfFile(netCdfFile,
> > > true, // clobber an existing file
> > > true, // prefill variable values
> > > schema // metadata template
> > > );
> > > appendLine("NetCDF file '" + fileName + "' created.");
> > >
> > > The code dies upon the call to NetcdfFile. The error says only
> > > "AppletSecurityException".
> > >
> > > Is Java NetCDF applet capable within Netscape?
> > >
> > > Thanks.....John Cary
> > >
> > > --
> > > cary@xxxxxxxxxx John R. Cary www.techxhome.com
> > > Tech-X Corporation ph. (303) 448-0728
> > > 5541 Central Avenue, Suite 135 fax (303) 448-7756
> > > Boulder, CO 80301 cell (303) 356-5399
> >
> > Hi John:
> >
> > Im not an expert on this, but I have been investigated applets recently.
> > One thing Im pretty sure of is that you have to sign your applets before
> > they can escape from the applet security sandbox.
> >
> > check out:
> >
> > http://java.sun.com/sfaq/
> > http://java.sun.com/security/signExample12/
> > http://java.sun.com/security/index.html
> >
> > We are currently exploring a new technology called WebStart that looks
> > promising:
> >
> > http://java.sun.com/products/javawebstart/
> >
>
> --
> cary@xxxxxxxxxx John R. Cary www.techxhome.com
> Tech-X Corporation ph. (303) 448-0728
> 5541 Central Avenue, Suite 135 fax (303) 448-7756
> Boulder, CO 80301 cell (303) 356-5399
