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  • From: Michael Peppler <mpeppler AT peppler.org>
  • To: "TDS Development Group" <freetds AT franklin.oit.unc.edu>
  • Subject: Re: 4.2 limitation...
  • Date: Tue, 2 Jan 2001 13:45:36 -0800 (PST)


Roger Burton West writes:
> On Tue, Jan 02, 2001 at 11:51:49AM -0800, Michael Peppler wrote:
> >mjn writes:
> > > > my $sth = $dbh->prepare("SELECT * FROM authors WHERE state =
> > > > \"$state\"");
> > > $state='"ca"';
> > $state = 'ca';
> > my $sth = $dbh->prepare("SELECT * FROM authors WHERE state =
> > '$state'");
> >or use the q() and qq() operators, like so:
> > my $sth = $dbh->prepare(qq(SELECT * FROM authors WHERE state =
> > "$state"));
>
> But all of these are vulnerable to attacks which include whatever the
> quoting character is - easily done if you're allowing outside input.
> The DBI::quote function was designed specifically to get around this
> problem, and will correctly quote _any_ string for use by the relevant
> database.

Agreed - and I actually have an article in the current ISUG Tech
Journal on this issue :-)

Michael
--
Michael Peppler - Data Migrations Inc. - mpeppler AT peppler.org
http://www.mbay.net/~mpeppler - mpeppler AT mbay.net - AIM MPpplr
International Sybase User Group - http://www.isug.com
Sybase on Linux mailing list: ase-linux-list AT isug.com




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