Htaccess: Condition on HTTP_USER_AGENT then rewrite with dynamic subdomain

I’m creating a static webpage solution for my angularJS project where I check for the HTTP_USER_AGENT in my .htaccess file and then redirect any crawlers to a static php page so I can add all the necessary meta data.

The problem is that I’m using a wildcard subdomain, so any of my clients can have their own subdomain and I can’t figure out how to redirect via RewriteRule to the right url.

My RewriteCondlooks like this:
RewriteCond %{HTTP_USER_AGENT} (facebookexternalhit/[0-9]|Facebot|Twitterbot|Pinterest|Google.*snippet)

and my basic non-working RewriteRule looks like this:
RewriteRule ^stuff/(.*)$$1 [NC,L]

But I want it to go to static.php on that subdomain the request is on, so if I request is it possible to make the rewriterule go to$1 instead of just the static above? (there will NEVER be a request on - all requests to stuff will be via a subdomain)

I’m not that experienced in .htaccess and get’s a bit confused from all the answer that here listed at SO and Google finds.

I found the solution by piecing some code together and getting my head around it.
My three lines of .htaccess codes that works looks like this:

RewriteCond %{HTTP_USER_AGENT} (facebookexternalhit/[0-9]|Facebot|Twitterbot|Pinterest|Google.*snippet)
RewriteCond %{HTTP_HOST} ^(.+?)\.example\.com$
RewriteRule ^s/(.*)$$1 [NC,L]

Why not simply replace with %{HTTP_HOST} ?

Naw, you got the right track with your second RewriteCond but, unless you’re changing the domain, you’re working too hard!



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