[libxml-devel] DTD's still loaded when default_load_external_dtd is false

[Charlie Savage]

Hi Paul,

> Even if XML::Parser.default_load_external_dtd is set to false the parser 
> loads the DTD, see test script:

Upgrade to the latest libxml version (0.7.0) - it works fine here.  I've 
added your test case to tests/tc_xml_dtd.rb (in SVN, but not in the 
0.7.0 release).

   def test_external_dtd
     xml = <<-EOS
       <!DOCTYPE test PUBLIC "-//TEST" "test.dtd" []>
       <test>
         <title>T1</title>
       </test>
     EOS

     messages = Array.new
     XML::Parser.register_error_handler(lambda { |msg| messages << msg })

     XML::Parser.default_load_external_dtd = false
     doc = XML::Parser.string(xml).parse
     assert_equal(Array.new, messages)

     XML::Parser.default_load_external_dtd = true
     doc = XML::Parser.string(xml).parse
     assert_equal('I/O warning : failed to load external entity 
"test.dtd" <!DOCTYPE test PUBLIC "-//TEST" "test.dtd" []> ^',
                  messages.map{|msg| msg.strip}.join(' '))
   end

> I can suppress the warnings with default_warnings=false but this is not 
> the issue, the parser still attempts to load the DTD. In the case above 
> the DTD does not exist so no harm is done. In another test case I have 
> the DTD does exist but should not be loaded, in this case the bug makes 
> it impossible to work with the XML.

Upgrade, and see if the problem disappears.

Charlie
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 3237 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://rubyforge.org/pipermail/libxml-devel/attachments/20080710/fe24dfcc/attachment.bin>