FreeTDS Development Group

[Michael Peppler <mpeppler AT peppler.org>]

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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