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From "Boyle Owen" <Owen.Bo...@swx.com>
Subject RE: [users@httpd] Redirecting Back to HTTP from HTTPS
Date Wed, 13 Jun 2007 07:18:31 GMT
> -----Original Message-----
> From: Don Don [mailto:progwihz@yahoo.com] 
> Sent: Tuesday, June 12, 2007 4:56 PM
> To: Apache Mailing List
> Subject: [users@httpd] Redirecting Back to HTTP from HTTPS
> 
> Redirect back to http from https
> 
> I've set up my apache to redirect from 2 http pages to https 
> when requested which runs fine...the browser then keeps 
> running other pages on https, I need to be able to return to 
> normal http when those 2 pages are done with.
> 
> I am using the following statements in apache2 in my virtual 
> hosts section
> 
> Redirect /host/directory/folder/login.php 
> https://servername/host/directory/folder/login.php
> Redirect /host/directory/folder/register.php 
> https://servername/host/directory/folder/register.php
> 
> What statements can I use to return back to http when the 
> avove 2 pages are not involved ?

You might have a bit of a misconception about how HTTPS works... You
seem to be thinking of it as a security feature that you can switch on
and off on a single site. It's not. It's more like you have two separate
websites and you have to switch between them. [eg, forget about HTTPS
and imagine you had to go to http://wibble.com to log in but then the
main content was on http://wabble.com].

You already know how to do half of it with your redirects from the HTTP
site to HTTPS. So you could set up a similar set of redirects in the
HTTPS site to take you back to HTTP - but you'd need one for ever URL
that leads to the HTTP site [I don't know your site - maybe that's
feasible.. but it wouldn't be a very general solution].

The general way to do this is to use mod_rewrite with skipping, eg:
(NB the "..." is for abbreviation, it's not literal)

In HTTP VH:
RewriteRule /.../login.php https://.../login.php       [R]
RewriteRule /.../register.php https://.../register.php [R]

In HTTPS VH:
RewriteRule /.../login.php    - [S=2]
RewriteRule /.../register.php - [S=1]
RewriteRule ^/(.*) http://servername/$1 [R]

In the HTTP VH you just have what you have already but using mod_rewrite
instead of Redirect. In the HTTPS VH, if you get login.php or
register.php you don't rewrite it (the "-"), then you skip the next 2 or
1 RewriteRules ( [S=2], [S=1]) - that is, you skip over the general
purpose rewrite back to HTTP.

So login.php or register.php get served from HTTPS and everything else
goes back to HTTP.

Caveats:
- Don't know what your authentication mechanism will make of all this -
is a cookie delivered from the HTTPS site returned when you switch back
to HTTP?
- you might get browser complaints about mixing secure and non-secure
content.

At the end of the day, is it a big problem if all the login content is
HTTPS?

Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored. 

> 
> Cheers
> 
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