texlua-based tool and restricted shell escape

[Reinhard Kotucha]

On 2024-02-20 at 13:09:37 +0000, Joseph Wright wrote:

 > Hello all,
 >
 > In the notes for the upcoming TL'24 version of LuaTeX, it seems that lfs
 > functions should be able to work safely in restricted shell escape mode.
 > Is that a fair reading?
 >
 > The reason for asking is that the idea of listing files from within the
 > TeX run came up (https://tex.stackexchange.com/questions/709934), and
 > prompted me to look back at some L3 code that allows
 > platform-independent queries for the file structures, but which needs
 > unrestricted shell escape.
 >
 > David C. reminded me that texosquery is allowed in restricted shell
 > escape mode, but it needs Java and is non-ideal. I was therefore
 > wondering about putting together a Lua-based script that would do the
 > same things, and thus would be easier to rely on. But that's only
 > worthwhile if it can be used without needing unrestricted shell escape.

Hello Joseph,
maybe you can add the name of your script to the list of trusted
programs.  They are listed in a variable called shell_escape_commands
in texmf-dist/web2c/texmf.cnf.

Regards,
  Reinhard

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