sane-project-website/old-archive/1996-12/0009.html

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<title>sane-devel: Re: mail lossage?</title>
<h1>Re: mail lossage?</h1>
<a href="mailto:becka@sunserver1.rz.uni-duesseldorf.de"><i>becka@sunserver1.rz.uni-duesseldorf.de</i></a><br>
<i>Sun, 15 Dec 1996 03:51:20 +0100 (MET)</i>
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<i>&gt; &gt;&gt; in which case you have to be careful not to run into endless</i><br>
<i>&gt; &gt;&gt; recursion when trying to determine the list of available</i><br>
<i>&gt; &gt;&gt; devices... ;-)</i><br>
<i>&gt; Andy&gt; Yes. Simple solution : Do not allow to re-export</i><br>
<i>&gt; Andy&gt; netsaned-mounted scanners.</i><br>
<i>&gt; Hmmh, you make the assumption it's easy for the net-proxy to determine</i><br>
<i>&gt; whether it's re-exporting a device or not. I don't think it's that</i><br>
<i>&gt; easy. </i><br>
Well ... I assumed everything which has a driver-name starting with net-<br>
should be left out ... This could be dynamically added to the basename<br>
when exporting.<br>
<p>
<i>&gt; E.g., consider the netproxy on machine B in Figure 3.1 of the</i><br>
<i>&gt; standard. All it sees is a list of device name strings. It looks to</i><br>
<i>&gt; me like this needs some thought.</i><br>
Yes ... anything better than my simple approach would be appreciated.<br>
<p>
<i>&gt; Andy&gt; case, because : a) It is not possible to exchange the</i><br>
<i>&gt; Andy&gt; authentication data via standard SANE calls yet. (This is a</i><br>
<i>&gt; Andy&gt; deficiency we should try to alleviate somehow. The easiest</i><br>
<i>&gt; Andy&gt; way would be to read .netsanerc from the client, as it would</i><br>
<i>&gt; Andy&gt; not cause changes in SANE. Another would be to add a sane_auth</i><br>
<i>&gt; Andy&gt; call ...)</i><br>
<i>&gt; Agreed. This needs to be addressed, eventually.</i><br>
Yes, because we need some standard method of requesting authentication<br>
data ...<br>
<p>
Requesting the auth itself is easy : Simply return E_AUTH on any SANE<br>
call which needs more permissions that the client currently has.<br>
<p>
<i>&gt; Andy&gt; c) host1 can</i><br>
<i>&gt; Andy&gt; connect directly to host3, if desired. (I do not think we need</i><br>
<i>&gt; Andy&gt; proxy-sane ... do we ;-) ?</i><br>
<i>&gt; I actually like the idea (see, I like to work around firewalls...).</i><br>
Yes ... nasty things, if you do not have transparent proxying like<br>
in the newer Linux kernels ...<br>
<i>&gt; But it's not something we should spend extra effort on. But if it</i><br>
<i>&gt; falls off naturally, I'd call it a feature.</i><br>
Yep.<br>
<p>
For now I will probably simply do nothing about it, to make it work<br>
ASAP.<br>
<p>
<p>
CU,ANdy<br>
<p>
<pre>
--
==============================================================================
Andreas Beck | Email : &lt;<a href="mailto:becka@sunserver1.rz.uni-duesseldorf.de">becka@sunserver1.rz.uni-duesseldorf.de</a>&gt;
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