Re: [Ddclient-support] Proxy credentials

[William O. <woq...@gm...>]

Dear Ingo,

Thank you very much for giving me this full detailed answer, even knowing
you are busy =) Unfortunately I am no a perl programmer. I will be looking
forward for this feature.

Best regards / Cordialmente,

--
William Oquendo
Phd Candidate
Simulation Of Physical Systems Group
National University of Colombia
Linux User # 321481
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Este correo puede carecer de tildes o eñes ya que el teclado no contiene
estos caracteres. Presento excusas por eso.

*********************



On Mon, Jun 14, 2010 at 3:22 PM, Ingo Schwarze <isc...@as...> wrote:

> Hi William,
>
> William Oquendo schrieb am Thu, Jun 10, 2010 at 06:52:27PM -0500:
>
> > Dear all, I have been searching in google and in the forums with no
> > success about the following:
>
> Yes, ddclient is not famous for its documentation.
> As a general rule, your best bet for understanding what the
> program does is reading the source code, even though that's
> rather entangled and not easy to understand due to all those
> global variables.
>
> > I have a computer behind a University proxy, and I need to know the
> > internal ip all the time.  I need to specify the CREDENTIALS for
> > a proxy in ddclient, since I always get error 407 proxy authentication
> > error.
>
> Judging from the function geturl(), my impression is that ddclient
> plainly doesn't support proxies that require authentication.
> In the function geturl(), i see the DynDNS credentials being passed
> on to the DynDNS server, but i don't see any variables that could
> hold proxy credentials.
>
> > I have already configured the proxy in both the command line and
> > the ddclient.conf file, but I always got the error 407, proxy
> > authentication required.  In a desperate try, I wrote the full
> > line for the proxy:
> > userproxy:pas...@pr...:8080
>
> Oh, you mean into the "proxy" configuration variable?
> I don't think that will work, here is the parser for that
> variable, you find it in geturl():
>
>    $proxy  =~ s%^https?://%%i;
>    $peer   = $proxy || $server;
>    $peer   =~ s%/.*%%;
>    $port   = $peer;
>    $port   =~ s%^.*:%%;
>    $port   = $default_port unless $port =~ /^\d+$/;
>    $peer   =~ s%:.*$%%;
>
> So, in a nutshell, everything behind the last colon is taken
> as the port, everything before the first colon as the proxy host,
> and everything in between is discarded.
> Thus, ...
>
> > and ddclient quits an  error message related to "Error connecting
> > to proxy userproxy:8080" !!
>
>  ... small wonder, from the point of view of ddclient,
>
>  proxy = userproxy:pas...@pr...:8080
>
> is just the same as
>
>  proxy = userproxy:8080
>
> > Even the http_proxy var is present.
>
>   $ grep -i http_proxy ddclient
>  $
>
> That won't work, the ddclient program ignores that environment
> variable.
>
> > I really appreciate your help. I just simply want to know how to
> > configure the proxy credentials in ddclient.
>
> You are out of luck, ddclient doesn't seem to have that feature,
> and i don't feel like coding it right now, i'm too busy elsewhere.
> But i would estimate that an experienced Perl programmer might
> add the feature in about one day of work, perhaps even quicker
> if s/he is familiar with the ddclient code.
>
> Sorry that i can't really help you,
>  Ingo
>
> --
> Ingo Schwarze <isc...@as...> | Software Engineer
> Astaro GmbH & Co. KG | www.astaro.com | 76227 Karlsruhe | Germany
>