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Re: Help make upload from web secure

by robsv (Curate)
on May 10, 2001 at 20:29 UTC ( #79458=note: print w/ replies, xml ) Need Help??

in reply to Help make upload from web secure

Just a quick comment- when you're writing CGI programs, it's a really good idea to use the -T command-line switch to enable taint checking:

#!/usr/bin/perl -Tw
Searching for "taint" here on Perl Monks will yield some good information. In terms of a regex to do some checking for you, The Camel ("Programming Perl", third edition) offers many suggestions in Chapter 23 ("Security"). Here's an example from the book that checks that $string contains only "word" characters:
if ($string =~ /^([-\@\w.]+)$/) { $string = $1; } else { die "Bad data in $string"; }

- robsv

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