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RE: Re: File Naming

by Anonymous Monk
on Aug 01, 2000 at 10:02 UTC ( [id://25413]=note: print w/replies, xml ) Need Help??


in reply to Re: File Naming
in thread File Naming

sub secure_query { $_ = shift; s/\-+(.*)/$1/g; s/(.*)[ \t]+\-(.*)/$1$2/g; tr/\$\'\`\"\<\>\/\;\!\|/_/; return($_); }#End secure_query

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RE: RE: Re: File Naming
by Fastolfe (Vicar) on Aug 01, 2000 at 22:49 UTC
    This is probably a little simpler and a lot safer:
    $had_bad_characters = $user =~ s/\W//g; # Safer still (since what's defined as a 'word character' could change + based on locale/Unicode (?)) $user =~ s/[^a-zA-Z_-]//g; # Explicitely define what we want to ACCE +PT as valid
    Generally the secure approach involves defining what is acceptable and disallowing everything else, not trying to filter out what we know/anticipate to be bad, because stuff frequently slips through.

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