Package: docbook-xml Version: 4.5-7.2 Severity: important Consider the test document attached, it's starting with this:
<?xml version='1.0' encoding='utf-8' ?> <!DOCTYPE section [ <!ENTITY % BOOK_ENTITIES SYSTEM "Users_Guide.ent"> %BOOK_ENTITIES; <!ENTITY % sgml.features "IGNORE"> <!ENTITY % xml.features "INCLUDE"> <!ENTITY % DOCBOOK_ENTS PUBLIC "-//OASIS//ENTITIES DocBook Character Entities V4.5//EN" "http://www.oasi s-open.org/docbook/xml/4.5/dbcentx.mod"> %DOCBOOK_ENTS; ]> Now I want to parse it (with publican which uses libxml internally) but I always ends up loading http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod from the network instead of finding the local copy. I can reproduce the problem with xmllint: $ XML_DEBUG_CATALOG=1 xmllint --debugent --nonet --noent --noout test.xml [...] Resolve: pubID -//OASIS//ENTITIES DocBook Character Entities V4.5//EN sysID http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod 0 Parsing catalog file:///etc/xml/catalog file:///etc/xml/catalog added to file hash file:///etc/xml/docbook-xml.xml not found in file hash 0 Parsing catalog file:///etc/xml/docbook-xml.xml file:///etc/xml/docbook-xml.xml added to file hash Trying system delegate file:///etc/xml/docbook-xml.xml Resolve URI http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod [...] This is not normal. It looks like only the system idendifier (the URL) is used while the public identifier (for which there's a match in /etc/xml/docbook-xml.xml) is not used: $ grep -- "-//OASIS//ENTITIES DocBook Character Entities V4.5//EN" /etc/xml/docbook-xml.xml <delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Character Entities V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/> To confirm this impression I modified /etc/xml/docbook-xml.xml to replace this line: <delegateSystem systemIdStartString="http://docbook.org/xml/4.5/docbookx.dtd"; catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/> With this one: <delegateSystem systemIdStartString="http://docbook.org/xml/4.5/"; catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/> This allowed to go one step further in the catalog lookup: Resolve: pubID -//OASIS//ENTITIES DocBook Character Entities V4.5//EN sysID http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod 0 Parsing catalog file:///etc/xml/catalog file:///etc/xml/catalog added to file hash file:///etc/xml/docbook-xml.xml not found in file hash 0 Parsing catalog file:///etc/xml/docbook-xml.xml file:///etc/xml/docbook-xml.xml added to file hash Trying system delegate file:///etc/xml/docbook-xml.xml file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml not found in file hash 0 Parsing catalog file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml added to file hash Trying system delegate file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml Resolve URI http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod And to finally get it to work, I had to add this line in /usr/share/xml/docbook/schema/dtd/4.5/catalog.xml: <system systemId="http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod"; uri="dbcentx.mod"/> Now I have this: Resolve: pubID -//OASIS//ENTITIES DocBook Character Entities V4.5//EN sysID http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod 0 Parsing catalog file:///etc/xml/catalog file:///etc/xml/catalog added to file hash file:///etc/xml/docbook-xml.xml not found in file hash 0 Parsing catalog file:///etc/xml/docbook-xml.xml file:///etc/xml/docbook-xml.xml added to file hash Trying system delegate file:///etc/xml/docbook-xml.xml file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml not found in file hash 0 Parsing catalog file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml added to file hash Trying system delegate file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml Found system match http://www.oasis-open.org/docbook/xml/4.5/dbcentx.mod, using file:///usr/share/xml/docbook/schema/dtd/4.5/dbcentx.mod new input from file: file:///usr/share/xml/docbook/schema/dtd/4.5/dbcentx.mod There's something fishy either in the catalog files, or in the logic of libxml2, I'm not sure which one. Looking at https://www.oasis-open.org/committees/download.php/14809/xml-catalogs.html#s.ext.resx it looks like that the catalog file is at fault since libxml2 does the right thing by trying to use the system identifier in the first place. FWIW, I investigated this with the upstream author of Publican in this bugzilla ticket: https://bugzilla.redhat.com/show_bug.cgi?id=1143060#c18 It's really blocking me to release the new version of Publican in Debian so it would be nice to find a fix quickly if possible, because the freeze is approaching. -- System Information: Debian Release: jessie/sid APT prefers squeeze-lts APT policy: (500, 'squeeze-lts'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (500, 'oldstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16-2-amd64 (SMP w/4 CPU cores) Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages docbook-xml depends on: ii sgml-base 1.26+nmu4 ii sgml-data 2.0.9-1 ii xml-core 0.13+nmu2 docbook-xml recommends no packages. Versions of packages docbook-xml suggests: ii docbook 4.5-5.1 pn docbook-defguide <none> ii docbook-dsssl 1.79-7 ii docbook-xsl 1.78.1+dfsg-1 -- no debconf information -- debsums errors found: debsums: changed file /usr/share/xml/docbook/schema/dtd/4.5/catalog.xml (from docbook-xml package) -- Raphaël Hertzog ◈ Debian Developer Discover the Debian Administrator's Handbook: → http://debian-handbook.info/get/
test.xml
Description: XML document
