Re: Help with liblist commands

From: Patrick Dughi (
Date: 07/10/00

> I have experienced slight problems with the liblist commands (mlist, olist,
> rlist, zlist) when I list with mlist, olist, and rlist and specify a range
> larger than <olist 1000 4100> (stock bpl17 zones plus 5 zones) the list
> worked fine with about 241 entries in the list, but greater than that, it
> doesn't work, what can I do to fix this?  It seems that the server crashes
> when the list goes over 300 entries, because when I used rlist, and the list
> ended at 309 it crashed after it was done printing with page_string...

        This sounds like you haven't put in any sort of bounds checking.
Without looking at that patch, I would guess that it uses the global 'buf'
to write to, and that you're exceeding the MAX_STRING_LENGTH (or whatever
size 'buf' is in your system).  You can count chars and make sure you
don't overwrite the bounds, and truncate at the max length.(most users
can't take that level of screen spam anyway - their client will disconnect

        Of course, if you're lazy, you can just limit the number of
returns, or increase the size of your buffer.  These are just bandaids
though, and eventually it will crash again in the right circumstances.


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