htaccess rewrite rule all existing files and directories in one domain go to same filepath in another domain

Question

I'm trying to write an htaccess rewrite rule to send all existing files and directories at the domain http:// or https:// and www or not lun.re to lunre.com.

So lun.re/admin, which does exist would go to lunre.com, but lun.re/new, which doesn't exist would stay at lun.re, but would redirect to https://lun.re/new .

Here's what I have so far:

RewriteEngine on

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteCond %{HTTP_HOST} ^lun\.re$ [OR]
RewriteCond %{HTTP_HOST} ^www\.lun\.re$
RewriteCond %{REQUEST_URI} !^/$
RewriteCond %{REQUEST_URI} !^/[0-9]+\..+\.cpaneldcv$
RewriteCond %{REQUEST_URI} !^/\.well-known/acme-challenge/[0-9a-zA-Z_-]+$
RewriteCond %{REQUEST_URI} !^/\.well-known/pki-validation/[A-F0-9]{32}\.txt(?:\ Comodo\ DCV)?$
RewriteRule ^(.*)$ https://lunre.com/ [R=301,L]

RewriteCond %{HTTPS} off
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [NE,L,R]

Lines 5-8 were already there from my hosting provider.

I've also tried this:

RewriteCond %{REQUEST_FILENAME} !-d [OR]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ /loader.php [L,R]
RewriteCond %{REQUEST_FILENAME} -d [OR]
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{HTTP_HOST} ^(www\.)?lun.re$
RewriteRule ^ http://lunre.com/ [L,R]

But then I get a too many redirects error.

What exactly I am trying to do is if it does exist and the domain is lun.re then go to https://lunre.com/file-or-dir (the same filepath at the long url) otherwise if it doesn't exist then stay at the current domain and go to https://currentdomain/loader.php

Answer 1

You can use this:

RewriteEngine on

# http to https
RewriteCond %{HTTPS} off
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [NE,L,R]
#redirect all existing files/directories to http://lunre.com
RewriteCond %{REQUEST_FILENAME} -d [OR]
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{HTTP_HOST} ^(www\.)?lun.re$
RewriteRule ^ http://lunre.com/ [L,R]

You don't need a RewriteRule to Redirect non-existent requests back to your main domain as the Rule only redirects existing files/folders.