.htaccess how to handle dynamic sub-domain redirect to https and no sub-domain to www

Question

I have my htaccess file gitignored and while upgrading to Laravel 5.2 I deleted the old one on the server. I spent hours piecing it together and now I'm struggling to recreate it.

I need anything like

http://domain.com  

or

https://domain.com

to goto

https://www.domain.com 

and all other wildcard sub-domains such as:

http://myname.domain.com 

to goto

https://myname.domain.com 

So far I have this:

RewriteCond %{HTTPS} off
RewriteRule .* https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule .* https://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Answer 1

To redirect subdomains and main domain to HTTPS, you can use:

RewriteEngine on

#--Redirect subdomain to https--#
RewriteCond %{HTTP_HOST} ^((?!www\.).+)\.domain.com$ [NC]
RewriteCond %{HTTPS} off
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [NC,R,L]

#--Redirect maindomain to https --#
RewriteCond %{HTTP_HOST} ^(www\.)?domain.com$ [NC]
RewriteCond %{HTTPS} off
RewriteRule ^ https://www.domain.com%{REQUEST_URI} [NC,R,L]
#--Redirect non-www to www on SSL--#
RewriteCond %{HTTP_HOST} !^www\.example\.com$
RewriteCond %{HTTPS} on
RewriteRule ^ https://www.example.com%{REQUEST_URI} [NC,L,R]

Change R to R=301 when you are sure the redirect is working fine.