Re: libxml2 author overwhelmed with security requests - Mailing list pgsql-hackers

From Iván Chavero
Subject Re: libxml2 author overwhelmed with security requests
Date
Msg-id 571ade8d-8901-4095-8e3e-a910beff0b28@chavero.com.mx
Whole thread Raw
In response to Re: libxml2 author overwhelmed with security requests  (Sandeep Thakkar <sandeep.thakkar@enterprisedb.com>)
List pgsql-hackers


En 21/07/25 1:16 a. m., Sandeep Thakkar escribió:


On Fri, Jun 20, 2025 at 2:42 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
Pavel Stehule <pavel.stehule@gmail.com> writes:
> Own implementation of SQL/XML generating functions like XMLFOREST or
> XMLELEMENT should not be too
> difficult. Significantly more difficult problem is parsing of XML (more
> with namespaces), although some basic
> support for XMLTABLE should not be too hard too.

I don't think anybody really wants to roll our own XML parser.

> Isn't possible to call Rust code from C? Then maybe there are some
> possibility from Rust world
> https://github.com/ballsteve/xrust

Maybe.  I think the fundamental problem here, similar to what we've
run into elsewhere, is that we chose a library to depend on without
thinking hard enough about whether it would be well-supported in the
long run.  I see little reason to think that that risk would be less
for some random not-written-in-C implementation.  If we want to
jump ship away from libxml2, we had better ask hard questions about
the new choice.

Also, libxslt depends on libxml2, and there is no maintainer now after the
recent commits done to remove the existing ones:
https://gitlab.gnome.org/GNOME/libxslt/-/commit/c8b1ea4b89a9b81fa611f32c80f47df0c3b3b004
https://gitlab.gnome.org/GNOME/libxslt/-/commit/923903c59d668af42e3144bc623c9190a0f65988

After reading this thread I've stepped in to maintain libxslt and me and other

Mexican developers are going to be on top of libxml2. We use this libraries and their

Rust bindings because we're writing libraries for handling Mexican taxes and they are

wrapped in XML.


So at least me and another developer will be helping with this libraries and will make

our best effort to keep them up to date both in securities and functionalities (eg. XSLT 2.0 support).

Cheers,

Iván

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