Item1234: MathModePlugin's latex2img not executable

MathModePlugin's MANIFEST does not make latex2img executable.

After installation, it is necessary to run something like chmod a+x /var/lib/foswiki/pub/TWiki/MathModePlugin/latex2img before the plugin will work.

As per GuidelinesForSecureExtensions, latex2img should be moved to /tools, rather than living in /pub.

-- MichaelTempest

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!noci in BuildContrib might be useful, too, but putting it in tools is way better.

-- WillNorris - 19 Mar 2009

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The plugin is still in the (tm)wiki namespace, and it looks like it could be used in a (tm)wiki. I assume that is intentional, so the change I propose should be able to run under (tm)wiki, too.

I plan to move latex2img to /tools and make it executable via MANIFEST.

The plugin must still be able to find the latex2img if $TWiki::cfg{MathModePlugin}{Latex2Img} is not set, which means the plugin must be able to find the /tools directory. There is no offical API for this (yet). I propose that the plugin must try a number of different ways to find /tools, and use the first one that contains a latex2img executable:

• $TWiki::cfg{LocalesDir}/../tools
  • Assumes that /tools and /locale are in the same directory
• $FindBin::Bin/../tools
  • Assumes that /tools and /bin are in the same directory
  • Might not work under modperl

The plugin still might not find latex2img. I propose that MathModePlugin::Core::renderImages() should return an error message if the plugin cannot find latex2img.

-- MichaelTempest - 19 Mar 2009