Re: is there a problem with php script pulling HTML out of database as it writes the page??

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On Thu, 2008-07-17 at 17:32 +0100, Stut wrote:
> On 17 Jul 2008, at 15:41, Daniel Brown wrote:
> > On Thu, Jul 17, 2008 at 9:55 AM, Stut <stuttle@xxxxxxxxx> wrote:
> >>
> >> Seriously though, I'm wondering if my expectations are too high...  
> >> I expect
> >> them to know that addslashes is not adequate protection against SQL
> >> injection. I even had one tell me "SQL injection? I can't remember  
> >> but I'm
> >> sure I've used it before". And I won't even go into the guy who  
> >> asserted
> >> that he's always worked with DB administrators who've dealt with  
> >> security
> >> issues so he'd never needed to learn about it.
> >
> >    1.) It's obvious that addslashes() is not protection against SQL
> > injection attacks.  That's why God invented htmlentities() and
> > flatfile databases.
> 
> Yup, had that one.

While we're talking about God here... why bother escaping your data. For
he who believeth in the Lordeth could telleth thisith mountain hereth to
moveth over thereth...

Then again nevermind.

> >    2.) No PHP programmer should ever be required to know anything
> > about databases, server management, mail, or anything.  This is
> > because we all know that we'll someday all work in a Google-like
> > atmosphere with enough funding to hire other people to work with
> > databases, servers, HTML, and even a Senior JavaScript Engineer.
> 
> I have a ghostwriter who keeps me active on the mailing lists. Best  
> 50p I spend every week!
> 
> >    3.) "SQL injection" is just a buzzphrase.  I already know where
> > baby databases come from.
> 
> The big Daddy database spends lots of CPU cycles on the big Momma  
> database and she eventually lets him put his SQL client into her  
> console and their SQL statements intermingle until something magic  
> happens. At least that's what my Daddy told me when I was a little  
> regex.

No, no, no... you got the semantics wrong... SQL injection is when an
imposter performs an insert on Momma database thus corrupting the data.
Sometimes big daddy doesn't know about the corruption until he performs
a select query on baby database. Unfortunately we're not yet
technologically advanced enough to perform a repair under these
circumstances.

> >    4.) Any web programmer worth his or her salt knows that PHP, while
> > a great language, is not compatible with all browsers.  Especially
> > Microsoft.  For people using Windows, you'll need to have an ASP
> > website.
> 
> Indeed. And PHP can't be used for foreign language sites, only US  
> English. It makes a complete mess of British English sites.

You should see what happens when you have to manage Canadian English and
Canadian French on the same site. PHP is the 5ux0r5.

> >    5.) Never sanitize input.  It takes too long, and unless you're
> > dealing with credit cards, no one will ever want to hack your website.
> > If you are taking credit cards, store them in a firewalled database.
> 
> You say this, but the person I just did a phone interview with did  
> tell me that security is a cost-benefit calculation in terms of both  
> development time and runtime resources. He said he never bothers  
> escaping input in Intranet sites. True story!

I've been reading your email... hope you don't mind.

> >    6.) If you need to copy files from one server to another, make
> > sure you use FTP over HTTP.  It's more secure.
> 
> I use an Oompa-Loompas - much more reliable!
> 
> >    7.) register_globals is your friend.
> 
> And I hug her, and kiss her and squeeze her tight. *pop*
> 
> >    8.) The best, most-scalable way to create an expandable website is
> > to use a switch page.  Just tack on a ?page=faq.php query to your GET
> > request, and have PHP automatically `include($page)` (see point #7) in
> > your switch file.

*hahahahaahah* What a clever person... what other sites did he/she work
on? Post links please >:)

> Ooh, dangerous. I worry about relative paths, so when I do this it's  
> always with an absolute path... i.e. ?page=/var/www/mywebsite.com/ 
> somedir/faq.php

Absolute paths are much faster to resolve. Good for him, efficiency is
paramount on a heavy traffic payment gateway where every cycle can
contributes to squeezing in another credit card payment.

> >    9.) NEVER store passwords in a PHP script.  Instead, store them in
> > a file named `inc/config.inc` in the web directory, and include them.
> 
> I prefer to use .txt as the extension. Makes opening them in Notepad  
> so much easier.

Don't use a .htaccess file either to secure the directory. Apache needs
to read that... cycles, cycles, cycles... things of the baby databases.

> >    10.) If running a picture- or file-sharing website, make things
> > easier on your users and yourself.  Allow users to delete their files
> > by using a simple link like:
> > http://www.example.com/delete.php?file=images/mygraphic.jpg.  Then, in
> > delete.php, have only one line: <?php unlink($file); ?> (again, see
> > point #7 --- see how much that's coming in handy now?)

Wow, that's handy. You can practically create a clean-site web service
using: wget -r

> This works best if the web server is running as root. None of those  
> annoying error messages about not being able to open files that I know  
> are there!
> 
> >    11.) The most important rule EVER: if you ever have the slightest
> > problem, DO NOT bother to search the #$@% web (STFW) or read the #@%^
> > manual (RTFM).  There is a mailing list for that.  Please ask any and
> > all questions there, including why your MP3's aren't streaming on your
> > AnalogX webserver from your home PC to your buddies in Antarctica
> > after you turn your computer off.  "But when I turn my computer off,
> > the rest of the Internet still works! Hlp me pls!!!1!"  We are here
> > only to serve you.  People on mailing lists are paid to write your
> > code and do your homework for you, and you should expect nothing but
> > the best, immediate answers, 24/7/365.  If they don't respond within
> > 90 seconds, please repost your message every 90 seconds until someone
> > does.  When in doubt, hijack a thread.
> 
> Why do birds suddenly go *poof*, every time, you are near?

Could someone send me a link for the above mentioned mailing list. I've
had some itchiness in my lower regions recently for which I'd like to
get some expert opinions. I'm not in too much of a hurry fortunately,
there's only been a little bleeding and I've only started smelling
something foul since this morning.

Thanks,
Rob.

Ps. For noobs on the site who have read this far before trying some of
the advanced techniques mentioned above... this has been a satirical
post. DO NOT TRY AT HOME-- OR AT WORK.

-- 
http://www.interjinn.com
Application and Templating Framework for PHP


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