[ut2004] Cache installer

[Jim Grimsby]

Now that some good info I did not know that!



>> If you don't know, UT and UT2004 use the same cache layout.
>
> No, I never played UT :)
>
>> Just change .loki/ut/Cache to .ut2004/Cache and of course it works.
>
> Maybe put the dir into one variable so one only has to change it in one
> place?
>
> And both our scripts could be exploited by the $( ) or `` shell escapes
> (which are valid filenamecharacters at least on on Linux) since I pipe
> into sh and you directly execute the file via sh[1]:
>
> A41F8DC011D87B483000048CB7637684-1=Test`touch /tmp/Boom1`MapOne.ut2
> or
> B41F8DC011D87B483000048CB7637684-1=Test$(touch /tmp/Boom2)MapTwo.ut2
>
> as a cache.ini entry - to fix it (as I did in my script) escape these 
> chars:
>
> ( cat cache.ini | grep -v Cache |  ....
> to
> ( grep -v Cache cache.ini | sed 's,\(`\|\$\),\\\1,g' | ....
>
>
> And back to arguing which script is "better" :)
>
> My script already places the files in their appropriate folders and
> leaves modfiles (.u) in place (since mods are better not installed this
> way), without a cache.ini entry the files in the cache dir are invisible
> to ut2004.
>
>
>     -Thomas
>
>
>
> [1]: Admitedly I only found it looking for bugs in your script and then
> finding the same in mine :)
>