Nginx + apache : REMOTE_ADDR and REMOTE_HOST bug

[Albuquerque Rui]

2011/8/31 Albuquerque Rui <saiaman01 at gmail.com>

>
>
> 2011/8/31 Jim Ohlstein <jim at ohlste.in>
>
>> On 8/30/11 5:50 PM, Maxim Dounin wrote:
>> > Hello!
>> >
>> > On Tue, Aug 30, 2011 at 04:17:52PM -0400, Jim Ohlstein wrote:
>> >
>> >> On 8/30/11 2:29 PM, Albuquerque Rui wrote:
>> >
>> > [...]
>> >
>> >>>>> Changes done, nothing changed.. Still the same problem...The fact is
>> >>> that it seems mod_rpaf is working well because REMOTE_ADDR is good,
>> but
>> >>> REMOTE_HOST is not good :( :( :(
>> >>
>> >>
>> >> I agree. It is not resolving the IP incorrectly. It is not an issue
>> with
>> >> nginx or with mod_rpaf.
>> >
>> > As I wrote in my original reply...
>> >
>> >>>     >     >     I.e. client's ip is correct, but client's hostname
>> still points to
>> >>>     >     >     your webserver, right?  This looks like problem in
>> mod_rpaf.
>> >
>> > ... this is obviously a problem in mod_rpaf.  It fails to change
>> > ip *before* resolving happens in Apache.  (No idea if it's actually
>> > possible to implement this correctly though.)
>>
>> Maxim, we could argue this pedantically all night long and never agree.
>> However, mod_rpaf is doing exactly what it's designed to do which is to
>> report the remote IP address correctly. HostNameLookups is *not* a
>> function of mod_rpaf, it is a function of Apache core.
>>
>> However... the function works properly in *my* testing as follows.
>>
>> I created a small php script as follows:
>>
>> <?php
>>
>> print ('Your IP is "'.$_SERVER['REMOTE_ADDR'].'". ');
>>
>> print ('Your Host is "'.$_SERVER["REMOTE_HOST"].'".');
>>
>> ?>
>>
>> I turned on "HostNameLookups" in Apache.
>>
>> Attached is the result.
>>
>> This is indeed my IP and host.
>>
>> Why it's not working for the OP I cannot explain, but it does seem to
>> work *correctly* as does "HostNameLookups" directive.
>>
>>
>>
> >> While accessing the page directly from apache i've got the good values
> too. But when i pass by nginx then apache ( mod_rpaf ) the hostname is not
> right :(
>
>
I've patched the thing with a php script. In fact i don't really need
hostname everywhere and hostnamelookups is activated only for some vhosts.
So this is the patch :

http://pastebin.com/4HmX790g





>
>
>>  >
>> > Maxim Dounin
>> >
>> > _______________________________________________
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>> > nginx at nginx.org
>> > http://mailman.nginx.org/mailman/listinfo/nginx
>>
>>
>> --
>> Jim Ohlstein
>>
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>> nginx at nginx.org
>> http://mailman.nginx.org/mailman/listinfo/nginx
>>
>>
>
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