SimonDau SimonDau - 2 months ago 11
Apache Configuration Question

Moving from IIS ISAPI rewrite to Apache mod_rewrite

I've seen few people have asked this on here already, but none of the solutions provided worked for me so far. The situation:
we have always been developing for the IIS ISAPI rewrite (on Windows) and suddenly one of the clients decided to place the project on the Linux server running Apache. As a result some of the rules are no longer working and as the project is about to go live, it's kind of urgent.

Example of an ISAPI rewrite rule:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^login/?([^/]*)([^/]*)$ /login.cfm?msg=$1&$2 [L,QSA]
RewriteRule ^login.cfm$ /login/ [R=301,L,NC]


login.cfm is an actual existing page and not dynamically generated based on template.

Could someone translate this for the Apache mod_rewrite please. Currently the rule creates an infinitive loop and the output is:
login/?msg=&&msg=&&msg=&&msg=&&msg=&&msg... (till the limit of the url length)
Safe to say the page is not found either so it doesn't even check whether the file with such name exists.

The page could be /login or /login/wrong so the rule should recognize both cases.

Thanks!

Answer

You can use these rules in your site root .htaccess:

RewriteEngine On

# external redirect from actual URL to pretty one
RewriteCond %{THE_REQUEST} /login\.cfm\?msg=([^\s&]*)\s [NC]
RewriteRule ^ /login/%1? [R=301,L,NE]

# internal forward from pretty URL to actual one
RewriteRule ^login(?:/([\w-]+))?/?$ login.cfm?msg=$1 [L,QSA,NC]
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