php htaccess

hi, we have a joomla site, this joomla site redirectes from http to https. on http were the facebook likes, so we added there an og url to http, to display likes on https. that is working for whole site with: # HTTPS Redirect RewriteCond %{HTTP_HOST} !^www\.example\.com$ RewriteCond %{HTTP_USER_AGENT} !(Facebot|facebookexternalhit/1.1|facebookexternalhit/1.0) [NC] RewriteRule ^(.*)$ [login to view URL]$1 [L,R=301] RewriteCond %{HTTPS} off RewriteCond %{HTTP_USER_AGENT} !(Facebot|facebookexternalhit/1.1|facebookexternalhit/1.0) [NC] RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L] but the problem is that in joomla over an language plugin after http to https the frontpage will redirected to /en/ with an 302 redirect. so i have the problem that on homepage that en page only, facebook tell me redirect circular problem, BECAUSE facebook crawler needs to excluded from the 302 redirect...but that is done in php over the plugin... so is there any possibilty to fetch over htaccess the requested uri or like that to say like in http to https if facebookcrawhler then do not do 302 at all...? hope you got my point :).