Re: [MacPerl-WebCGI] "Too late for '-T' option" message

[David Steffen <steffen@biomedcomp.com>]

At 6:28 PM -0500 12/3/00, Riccardo Perotti wrote:

>I'm writing a simple mailing list script.
>
>I put the -w switch and everything went ok (after correcting some stuff, of
>course). LATER ON I added the T option (as in -wT) but get a
>
>    "Too late for '-T' option" message.
>
>What's the deal?

[I'm assuming you are running a MacPerl CGI because of the list you posted to.]

The deal is that perl has to impose taint checking before it starts 
reading the script.  In Unix, this is normally not a big deal, as the 
standard construct:

#!/usr/bin/perl -T

...is actually addressed to the SHELL, and so perl gets the -T before 
it starts on the script.  In MacPerl, this is not the case; MacPerl 
has actually started reading the script before it sees the -T.  Thus, 
in MacPerl, the above construct will not work.

In MacPerl, there are two ways of turning on Taint checking:

1) You can select it from the Script menu before running the script. 
This is not normally useful for a CGI.

2) If MacPerl is called by another program using AppleEvents (sort of 
like the case of shell scripts on Unix) there is a parameter you can 
pass to turn on Taint checking.  Thus, there is a different version 
of CGI glue which has Taint checking turned on.  Depending how and 
where you got MacPerl, you may already have this; just poke around 
until you find a file (with a Camel Suitcase icon) named "CGI Script 
(Taint Check)" and put it in the "MacPerl Extensions" folder.  Then, 
simply select "CGI Script (Taint Check)" instead of the usual" CGI 
Script" when you save your MacPerl CGI.

I'd offer you my version of "CGI Script (Taint Check)" except I don't 
use it much, I have messed around with my MacPerl distribution a lot, 
and thus I don't know if mine is the latest version or even if it 
works.  Poking around, I found this:

http://pudge.net/macperl/pcgit.html

I'm sure one of the friendly folks here will let us know if this is 
not the most current version.

HTH

-David Steffen-
David Steffen, Ph.D.
President, Biomedical Computing, Inc. <http://www.biomedcomp.com/>
Phone: (713) 610-9770 FAX: (713) 610-9769 E-mail: steffen@biomedcomp.com

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