Forum Moderators: phranque
I learned how to solve a problem that has been bugging me for quite a long time from an article at [askapache.com...] (code reposted with permission). For URI's that can be either HTTP or HTTPS, I run into a problem where I have to duplicate every rewrite code block so that it can redirect to either the HTTP or HTTPS version based on if the request was HTTP or HTTPS.
The cool thing about this method of using an environment variable to store whether or not the request is HTTP or HTTPS is that the value of the variable can be "http" or "https" which allows the same type of dynamic robustness that mod_rewrite's RewriteRule directive allows with normal environment variables.
So before this method you would have to use something like:
RewriteRule ^.*$ https://%{SERVER_NAME}/%{REQUEST_URI} [R=301,L]
RewriteRule ^.*$ http://%{SERVER_NAME}/%{REQUEST_URI} [R=301,L]
but with this method setting an environment variable varname as "http" or "https" you can now do this!
RewriteRule ^.*$ %{ENV:varname}://%{SERVER_NAME}/%{REQUEST_URI} [R=301,L]
Old Method
The below shows 2 common rewrites, removing index.html from the url and redirecting // to /.
RewriteCond %{HTTPS}!=on
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /(.*)index\.html\ HTTP/ [NC]
RewriteRule ^.*$ http://%{SERVER_NAME}/%1 [R=301,L]
RewriteCond %{HTTPS} =on
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /(.*)index\.html\ HTTP/ [NC]
RewriteRule ^.*$ https://%{SERVER_NAME}/%1 [R=301,L]
RewriteCond %{HTTPS}!=on
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /(.*)//(.*)\ HTTP/ [NC]
RewriteRule ^.*$ http://%{SERVER_NAME}/%1/%2 [R=301,L]
RewriteCond %{HTTPS} =on
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /(.*)//(.*)\ HTTP/ [NC]
RewriteRule ^.*$ https://%{SERVER_NAME}/%1/%2 [R=301,L]
New Method
RewriteCond %{HTTPS} =on
RewriteRule ^(.+)$ - [env=askapache:https]
RewriteCond %{HTTPS}!=on
RewriteRule ^(.+)$ - [env=askapache:http]
# redirect urls with index.html to folder
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /(.*)index\.html\ HTTP/ [NC]
RewriteRule ^.*$ %{ENV:askapache}://%{SERVER_NAME}/%1 [R=301,L]
# change // to /
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /(.*)//(.*)\ HTTP/ [NC]
RewriteRule ^.*$ %{ENV:askapache}://%{SERVER_NAME}/%1/%2 [R=301,L]
# redirect urls with index.html to folder
RewriteCond %{SERVER_PORT}s ^(443(s)¦[0-9]+s)$
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /([^/]+/)*index\.html\ HTTP/
RewriteRule ^(([^/]+/)*)index\.html$ http%2://%{HTTP_HOST}/$1 [R=301,L]
#
Replace broken pipe characters "¦" with solid pipes before use; Posting on this forum modifies the pipe characters.
Jim
[edited by: jdMorgan at 10:59 pm (utc) on Nov. 29, 2007]
RewriteCond %{HTTPS} =on
RewriteRule ^(.+)$ - [env=askapache:https]
RewriteCond %{HTTPS}!=on
RewriteRule ^(.+)$ - [env=askapache:http]
with
RewriteCond %{SERVER_PORT}s ^(443(s)¦[0-9]+s)$
RewriteRule ^(.+)$ - [env=askapache:http%2]
The reason I like the variable is because once you set it you can use it for all the rest of the rewrites without having to conditionalize it for every block.
Jim
i was thinking something like this but i was wrong:
#Redirect all but main page to to HTTPS
RewriteCond {REQUEST_URI}!^http://www.gtron.com$
RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R,L]
any help would be great. :)
Also, REQUEST_URI will never contain the domain name, only the local URL-path. The local URL-path for your "home page" will be "" (blank) if checked by RewriteRule in an htaccess context. The pattern should therefore be "^$" to match home page requests, or "!^$" or just "." to match anything else except the home page.
Our forum charter [webmasterworld.com] contains links to the Apache documentation and other related resources -- highly-recommended reading. :)
Jim
thanks again!
