General
FUP is bad
2008-02-10 21:00 UTC · Luke-Jr (#2773)
FUP is horribly designed and has known buffer overflow exploits
File I/O is significantly better (though admitted not ideal)
http://thwartedefforts.org/software/fileio/fileio-1.5p1.tar.gz
For the version integrated into GammaMOO (including a special logger mode), see:
svn diff -r 219:231 svn://svn.dashjr.org/gammamoo/trunk/gammamoo
Note I did come across a security problem in the original File I/O patch that is fixed in the GammaMOO-integrated version.