nginx cookie - how to inject variable into cookie

[Payam Chychi]

On Mon, Jun 1, 2009 at 3:45 AM, Maxim Dounin <mdounin at mdounin.ru> wrote:
> Hello!
>
> On Sun, May 31, 2009 at 02:05:12AM -0700, Payam Chychi wrote:
>
>> Hey,
>>
>> im trying to compare the cookie with  the remote_addr via nginx but
>> nginx sees $remote_addr as the text and not the a variable ... so it
>> wont match properly
>> I do have two cookies... the one I need to match for is the 2nd cookie
>> "YPF8827340282Jdskjhfiw_928937459182JAX666=96.48.77.222"
>>
>>                 if ( $http_cookie !~
>> YPF8827340282Jdskjhfiw_928937459182JAX666=$remote_addr ) {
>>                         rewrite  ^(.*)$  /check/$host.shtml  last;
>>                         break;
>>                 }
>
> This wont work since nginx doesn't allow variables in a right-hand side
> of the expression.  Workaround is to use something like this:
>
>    set $blah "$remote_addr:$http_cookie";
>    if ($blah !~ "^([0-9.]+):.*YPF8827340282Jdskjhfiw_928937459182JAX666=\1") {
>        ...
>    }
>
> This uses static pattern with pcre builtin backreference and will
> work as expected.
>
> Maxim Dounin
>
>

Maxim,

Thanks much ... worked out great =)

-- 
Payam Tarverdyan Chychi
Network Security Specialist / Network Engineer