In Apache 2.4, client_addr belongs to 'conn_rec', from which you get the
information about the peer of the connection, which could be a proxy server.
'useragent_ip' belongs to request_rec, from which you get the information about
the HTTP request from the real user end point (the Web browser) on the
application layer. You can do:
$useragent_ip = $r->useragent_ip()
.
It seems that '$r->useragent_addr' is mapped to 'apr_sockaddr_t', which means
you can do:
$useragent_ip = $r->useragent_addr->ip_get();
and
$useragent_port = $r->useragent_addr->port();
.
Regards,
Jie
* A. Warnier <a...@ice-sa.com> wrote:
> Date: Sun, 30 Oct 2016 12:12:57 +0100
> From: "A. Warnier" <a...@ice-sa.com>
> To: modperl@perl.apache.org
> Subject: Re: Apache 2.4, mod_perl 2.0.9, APR::SockAddr->port() missing ?
> User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:38.0) Gecko/20100101
> Thunderbird/38.5.0
>
> Replying to self..
>
> My basic question remains the same :
> given that neither of the following seem to work under Apache 2.4 / mod_perl
> 2.0.9 :
>
> $remote_port = $r->connection->client_addr->port;
> or
> $remote_port = $r->connection->remote_addr->port;
>
> how could I best obtain, in a mod_perl AAA handler, some unique client port
> number that is unlikely to change over the duration of a single HHTP client
> keepalive connection (whether through proxies or not). I do not really care
> if this is really the port number which the original client used to
> establish the connection, as long as it remains stable and unique and, from
> the Apache/mod_perl webserver point of view, the combination IP:port really
> is unique for a given client workstation currently accessing the server.
>
> Unfortunately, I do need an "IP:port" combination, because of some back-end
> software that relies on this and which I cannot change. Otherwise I guess
> that I could use $r->connection->id.
>
> (which I may still try to use as a kind of "alias" for the port number;
> maybe the back-end software won't realise that it is a fake. But I guess
> that this is a bit risky, since there is probably no guarantee that this
> would match the keepalive as the client sees it through possible proxies).
>
>
>
> >>>
> >>> In the Apache 2.2 version, this was :
> >>>
> >>> $remote_port = $r->connection->remote_addr->port;
>
>
>
> There was this change in Apache 2.4 compared to 2.2 :
>
> https://httpd.apache.org/docs/trunk/developer/new_api_2_4.html
>
> "conn_rec->remote_ip and conn_rec->remote_addr
> These fields have been renamed in order to distinguish between the
> client IP address of the connection and the useragent IP address of the
> request (potentially overridden by a load balancer or proxy). References to
> either of these fields must be updated with one of the following options, as
> appropriate for the module:
>
> When you require the IP address of the user agent, which might be
> connected directly to the server, or might optionally be separated from the
> server by a transparent load balancer or proxy, use
> request_rec->useragent_ip and request_rec->useragent_addr.
> When you require the IP address of the client that is connected
> directly to the server, which might be the useragent or might be the load
> balancer or proxy itself, use conn_rec->client_ip and conn_rec->client_addr.
> "
>
> With a corresponding discussion in :
> https://github.com/eprints/eprints/issues/214
>
> Interesting how a change which was originally made as an
> improvement/clarification, can have so many unforeseen ripple effects.
>
>
>
>
> On 30.10.2016 08:34, A. Warnier wrote:
> >On 30.10.2016 01:56, Randolf Richardson wrote:
> >> Do the following work for you?
> >>
> >> $r->connection->remote_addr->port
> >> $r->connection->local_addr->port
> >>
> >
> >I'll check again, but $c->remote_addr is supposed to not exist anymore in
> >httpd 2.4, as
> >far as I know.
> >Indeed :
> >
> >When I modify the code as follows :
> >
> > #my $client_addr = $r->connection->client_addr;
> >1184: my $client_addr = $r->connection->remote_addr;
> > $remote_port = $client_addr->port;
> > $remote_ip = $r->connection->client_ip;
> >
> >Can't locate object method "remote_addr" via package "Apache2::Connection" at
> >/home/mira/EFS/lib/AUTH/SLC.pm line 1184.\n
> >
> >
> >
> >>>Hi.
> >>>
> >>>Apologies to Steve and Torsten for posting this previously to them
> >>>directly.
> >>>It somehow slipped my mind that this would have been a better place.
> >>>Anyway thus :
> >>>
> >>>I am in the process of converting some mod_perl AAA code from Apache 2.2
> >>>to 2.4, and I
> >>>encounter the following problem :
> >>>
> >>>Apache error log :
> >>>
> >>>Can't locate object method "port" via package "APR::SockAddr" at
> >>>/home/mira/EFS/lib/AUTH/SLC.pm line 1184.\
> >>>
> >>>which corresponds to :
> >>>
> >>>1183: my $client_addr = $r->connection->client_addr;
> >>>1184: $remote_port = $client_addr->port;
> >>>
> >>>In the Apache 2.2 version, this was :
> >>>
> >>> $remote_port = $r->connection->remote_addr->port;
> >>>
> >>>and worked fine.
> >>>
> >>>Environment :
> >>>
> >>>Linux d1s008 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt25-2+deb8u3
> >>>(2016-07-02) x86_64
> >>>GNU/Linux (Debian "Jessie" as far as I know)
> >>>
> >>>Apache/2.4.10 (Debian) mod_apreq2-20090110/2.8.0 mod_perl/2.0.9dev
> >>>Perl/v5.20.2 configured
> >>>-- resuming normal operations
> >>>(apache2 and mod_perl are the standard Debian Jessie apt-get packages)
> >>>
> >>>
> >>>I have tried to find clues on the WWW, CPAN etc.. but I do not find
> >>>anything about
> >>>APR::SockAddr::port(), except this snippet (quite old..) :
> >>>
> >>>CPAN :
> >>>mod_perl 2.10 Changes :
> >>>...
> >>>1.99_14 - May 21, 2004
> >>>
> >>> APR::SockAddr::port() accessor is now read-only [Stas]
> >>>
> >>>Also on the host, the APR::SockAddr module source :
> >>>
> >>>/usr/lib/x86_64-linux-gnu/perl5/5.20/APR/SockAddr.pm :
> >>>
> >>>quote
> >>>=item obj: C<$sock_addr>
> >>>( C<L<APR::SockAddr object|docs::2.0::api::APR::SockAddr>> )
> >>>
> >>>=item ret: C<$port> ( integer )
> >>>
> >>>=item since: 2.0.00
> >>>unquote
> >>>
> >>>.. seems to imply that this should work.
> >>>(And so do
> >>>https://metacpan.org/pod/APR::SockAddr#port
> >>>http://perl.apache.org/docs/2.0/api/APR/SockAddr.html#C_port_
> >>>)
> >>>
> >>>Am I doing something wrong ?
> >>>
> >>>More importantly to me right now : how can I get the client's connection
> >>>port number,
> >>>possibly using a workaround ? I am in control of the Apache httpd
> >>>configuration.
> >>>
> >>>I do not really care if this is the real client port, or a port of some
> >>>intermediate
> >>>proxy, as long as it remains consistent across severall KeepAlive calls of
> >>>the same client
> >>>workstation.
> >>>I need this port number to forward to another module (of which I do not
> >>>have the source),
> >>>which uses this (and the remote IP), as a kind of persistent identifier
> >>>for the client
> >>>connection (for Windows WIA authentication).
> >>>
> >>>The only way I can think of right now, would be to add a request header at
> >>>the httpd level
> >>>with the remote client IP:port, and then retrieve and decode that same
> >>>header in my AAA
> >>>module. But that seems a bit convoluted and heavy-handed.
> >>>Is there a way in a PerlAuthenHandler to retrieve an "Apache environment
> >>>variable"
> >>>directly, which would have been set like so ?
> >>>
> >>>RewriteRule .* - [E=INFO_REMOTE_ADDR:"%{REMOTE_ADDR}\:%{REMOTE_PORT}",NE]
> >>>
> >>>
> >>>Thanks in advance
> >>>André Warnier
> >>
> >>
> >>Randolf Richardson - rand...@inter-corporate.com
> >>Inter-Corporate Computer & Network Services, Inc.
> >>Beautiful British Columbia, Canada
> >>http://www.inter-corporate.com/
> >>
> >>
> >
>
