4.2 limitation...
Michael Peppler
mpeppler at peppler.org
Tue Jan 2 16:45:36 EST 2001
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
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