Mod Rewrite - Advanced issue

Question

I am needing to translate an unknown subdomain to a variable so the following would apply:

http://test.example.com/ → http://www.example.com/?domain=test
http://xyz.example.com/ → http://www.example.com/?domain=xyz
http://www.example.com/ → http://www.example.com/
http://www.example.com/pageA/ → http://www.example.com/pageA/
http://fish.example.com/pageB?somevar=something → http://www.example.com/pageB?somevar=something&domain=fish
http://www.example.com/pageB?somevar=something → http://www.example.com/pageB?somevar=something
http://fish.example.com/pageB → http://www.example.com/pageB?domain=fish

As you can see all I need to do is replace any subdomain with www and append the subdomain name as a get var called domain.

I'm getting really lost with this.

Edit: Oh I also want the user to still see the subdomain in the url, rather than redirecting.

Gumbo · Accepted Answer · 2011-01-28T18:45:26.360

2

Try this:

RewriteEngine on
RewriteCond %{HTTP_HOST} ^([a-z]+)\.example\.com$
RewriteCond %1 !=www
RewriteRule ^ http://www.example.com%{REQUEST_URI}?domain=%1 [QSA]

edited Jan 28 '11 at 18:45

answered Jan 28 '11 at 13:34

Gumbo

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Will this preserve other get vars? e.g. ?var=test&domain=xx – DwayneBull Jan 28 '11 at 14:32
@DwayneBull: Yes, the *QSA* flag will automatically append the original requested query to the new one. – Gumbo Jan 28 '11 at 14:33
I added [P,QSA] and changed the first line to: RewriteCond %{HTTP_HOST} !^www\.example\.com$ then it worked perfect. Thanks. – DwayneBull Jan 28 '11 at 18:42
@DwayneBull: Oh, it should have looked like it looks now. – Gumbo Jan 28 '11 at 18:46

score 0 · Answer 2 · answered Jan 28 '11 at 13:40

0

I would use:

RewriteEngine on
RewriteCond %{HTTP_HOST} !=www.example.com
RewriteCond %{HTTP_HOST} ^(www\.|)(.+)\.example\.com$
RewriteRule ^.*$ http://www.example.com/$1?domain=%2 [QSA]

This will also rewrite www.fish.example.com to ...?domain=fish.

answered Jan 28 '11 at 13:40

Floern

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Mod Rewrite - Advanced issue

2 Answers2