RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule . / [L,R=301]

RewriteCond %{SERVER_PORT} 443
RewriteRule .* http://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

RewriteCond %{SERVER_PORT} 443
RewriteRule .* http://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

RewriteBase /
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]