XML library for use in dissector

[Ahmad Fatoum <ahmad.fatoum () student kit edu>]

Hello everyone,

As part of a school project, we intend to extend the Ethernet POWERLINK
(packet-epl.c) dissector in Wireshark to be able to read in the XML device
description files (XDD) and use that information to dissect the packet
payload (The data field is currently displayed as a byte stream).

As we would like to have the changes eventually merged into the trunk, we
want to check what XML library we should use?

We are hesitant to rely on GMarkup, because we don't control the input, and
don't want to later find out that it doesn't manage some more complex
device profiles. Wireshark depends on lex(1), but I wouldn't want to
reinvent the wheel and rather use some out-of-the-box parser.

So what's the stance on dissectors pulling in dependencies like libxml? Any
other suggestions?

With kind regards
Ahmad Fatoum

ps: Out of curiosity, is there a particular reason e.g. PROFINET is a
plugin while Ethernet POWERLINK is statically linked?

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