[RFC][icedtea-web] Plugin doesn't halt when required elements from JNLP files are missing.

Danesh Dadachanji ddadacha at redhat.com
Fri Jan 6 11:08:55 PST 2012

On 06/01/12 12:37 PM, Jiri Vanek wrote:
> On 01/06/2012 05:44 PM, Danesh Dadachanji wrote:
>> Hi,
>> Looking at the plugin docs[1], <title> and <vendor> are required
>> elements of <information>, without them the plugin should stop with a
>> fatal error. Currently, icedtea-web just returns null from their
>> respective getters and handles null accordingly. However it should not
>> even reach that far. Here's a simple patch that throws a
>> ParseException when not found.
>> ChangeLog
>> +2012-01-06 Danesh Dadachanji <ddadacha at redhat.com>
>> +
>> + Applications using JNLP files without a title or vendor section
>> + still run, despite them being required elements.
>> + * netx/net/sourceforge/jnlp/Parser.java:
>> + (getInformationDesc): If title or vendor are not found in info,
>> + a new ParseException is thrown.
>> + * netx/net/sourceforge/jnlp/resources/Messages.properties: Add
>> + PNoTitleElement and PNoVendorElement
>> +
>> Any comments? Is this okay for HEAD?
>> Regards,
>> Danesh
>> [1]
>> http://docs.oracle.com/javase/7/docs/technotes/guides/javaws/developersguide/syntax.html
> I do not like the idea of forcing somebody to have elements, when they
> can be still empty. But if documentation say so.... How proprietary
> plugin is dealing with it?

It throws an exception, stopping further execution - the same as what 
this patch does for icedtea-web. =)

If you'd like to test it, remove a title/vendor tag from a JNLP file and 
run it. You may need to with the java console being set to "Show 
console" - especially if it's an applet.


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