Re: Problem with catalog resolver when resolving references from stylesheet document type declaration - patch available

["USHAKOV, Sergey" <s-...@yandex.ru>]

Hi once again,

a patched binary build is available from my blog page
"XSLT, entities, Java, Xalan..." at
http://s-n-ushakov.blogspot.com/2011/09/xslt-entities-java-xalan.html
along with some comments and guidelines.

Regards,
Sergey


----- Original Message ----- 
From: "USHAKOV, Sergey" <s-...@yandex.ru>
To: <xa...@xml.apache.org>
Sent: Wednesday, September 28, 2011 12:38 PM
Subject: Re: Problem with catalog resolver when resolving references from
stylesheet document type declaration - patch available


> Hi again,
>
> it looks like I have found the cause of the issue, and it looks like a bug
> in Xalan. Probably nobody before cared seriously about using external
> entities in an XSLT file.
>
> A patch to Xalan is available that fixes the issue, at least without
> XSLTC: https://issues.apache.org/jira/browse/XALANJ-2544 .
>
> May anybody of the commiters be in a position to have a look?
>
> Regards,
> Sergey
>
>
>
> ----- Original Message ----- 
> From: "USHAKOV, Sergey" <s-...@yandex.ru>
> To: <xa...@xml.apache.org>
> Sent: Friday, September 09, 2011 10:36 PM
> Subject: Problem with catalog resolver when resolving references from
> stylesheet document type declaration
>
>
>> Hi,
>>
>> I have been using Xalan-J with Catalog Resolver for a long while already.
>> It
>> was just recently that I ran into an issue with resolving.
>>
>> It happened when I got an idea to use character entities in XSLT trnsform
>> file and added an appropriate declaration to the XSLT file, like this:
>>
>> <!DOCTYPE transform [
>>    <!ENTITY % w3centities-f PUBLIC "-//W3C//ENTITIES Combined
>> Set//EN//XML"
>>        "http://www.w3.org/2003/entities/2007/w3centities-f.ent">
>>    %w3centities-f;
>> ]>
>> <xsl:transform version="1.0"
>> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
>> ...
>>
>> Everything was fine, except unusual processing time, even despite the
>> enitities declaration was registered with the resolver. The reason became
>> clear when I disabled the network connection. The result was a
>> "java.net.UnknownHostException: www.w3.org" that flew out of
>> org.apache.xalan.xslt.Process.
>>
>> Enabling full debug in the resolver revealed that nothing is wrong with
>> it.
>> It honestly reported about appropriate catalog entries (correct ones),
>> and
>> in case internet connection was present even reported about successful
>> resolving of the entities file as a local resource. The only problem was
>> that in case internet connection was down, the resolver was not given a
>> chance to respond, as the exception flew out earlier.
>>
>> Curiously, I managed to work around the problem by wrapping the XSLT file
>> into another one using 'xsl:include'. In that case no problems occured,
>> and
>> everything was fine regardless of the internet connection.
>>
>> My configuration is like this:
>> - Windows Vista;
>> - jdk1.6.0_25[b01_debug]
>> - Xalan-J 2.7.1
>> - Xerces 2.11.0
>> - Apache XML Commons Resolver 1.2
>>
>> Frankly, my attempts to debug the problem were not very much successful
>> due
>> to some unclear problem in getting Xalan and Xerces source recognized by
>> the
>> Eclipse debugger...
>>
>> Still the issue looks like a bug, or may I miss something?
>>
>> Regards,
>> Sergey
>>
>>
>