Question

I want to make an internal redirection based on the value of two cookies with use of htaccess/mod_rewrite. I don’t know how to refer to both values of tested cookies with backreferences. Here is what I want to do:

foo = value_of_cookie_foo
bar = value_of_cookie_bar
if (foo AND bar) {
  RewriteRule ^(.*)$ mysite/foo/bar [R,L]
}

Sadly, the following code does not work. This is because (according to Apache documentation) backreferences apply only for the last RewriteCond. The first one is not taken into account.

 RewriteCond %{REQUEST_URI} ^/whatever$
 RewriteCond %{HTTP_COOKIE} cookie_foo=([^;]+) [NC]
 RewriteCond %{HTTP_COOKIE} cookie_bar=([^;]+) [NC]
 RewriteRule ^(.*)$ mysite/%1/%2 [R,L]

For cookie cookie_foo=foo; cookie_bar=bar; the above code redirects to http://mydomain.com/mysite/bar instead of http://mydomain.com/mysite/foo/bar.

Should I enclose testing of both cookies in one RewriteCond? How?

Answer 1

You should reorder the cookie values to get them both at once:

RewriteCond %{REQUEST_URI} ^/whatever$
RewriteCond %{HTTP_COOKIE} (^|;\s*)cookie_foo=([^;]+)
RewriteCond %2;%{HTTP_COOKIE} ^([^;]+)(;\s*|[^;])+cookie_bar=([^;]+) [NC]
RewriteRule ^(.*)$ mysite/%1/%3 [R,L]

This will put the cookie_foo value at the beginning to then get the cookie_bar value too.