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Re: Authz on Collection of Repositories

From: Thomas ┼kesson <thomas.akesson_at_simonsoft.se>
Date: Sun, 11 Nov 2012 23:28:18 +0100

On 9 nov 2012, at 18:45, Ivan Zhakov wrote:

> On Thu, Nov 8, 2012 at 6:49 PM, Thomas ┼kesson
> <thomas.akesson_at_simonsoft.se> wrote:
>> Parentpath on /svn/ and Satisfy Any:
>> - Access without auth displays repositories with anonymous access, auth is not requested.
>> - Access with auth displays filtered list. Works well when browser has previously
>> been on an authenticated path. This is the situation when Satisfy Any and filtered
>> Collection of Repositories does not work well.
> That's why mixing anonymous and authenticated access is not good thing.

Yes, I am just trying to cover all bases including the possibility that people are depending on the inconsistency that we are addressing.

>> - Did a test with AuthzSVNAnonymous Off, which gave the quite surprising result
>> that all content was listed both on Collection of Repositories and within the
>> repositories. I doubt this is the intended behaviour?!?
> I agree, this is really strange behavior. Could you check this
> behavior with my patch? It's very low chance that my patch changes
> this behavior.

I have tested both with and without your patch. As expected, the patch has no impact on the AuthzSVNAnonymous issue.

There seems to be an issue when "AuthzSVNAnonymous Off" is combined with "Satisfy Any"; opens up the fort completely. Neither authn nor authz is required.

I think the problem is with access_checker, perhaps this part (has changed a few times during the years):
  if (!conf->anonymous
      || (! (conf->access_file || conf->repo_relative_access_file)))
    return DECLINED;

I am not quite sure how a DECLINE manages to bypass "Require valid-user" though. I understand how an OK would though.

>> - What is going on with AuthzSVNAnonymous Off? I will do more analysis of the
>> code (focusing on access_checker in mod_authz_svn.c) but it would be great if
>> someone could elaborate a bit on the intent.
> It would be nice if you confirm that my patch does not change
> AuthzSVNAnonymous Off behavior in this case I'll commit my patch and
> we may focus on this issue.

Confirmed as far as my testing goes (did not test short_circuit). I suggest committing the patch with GET subrequest and potentially change all to HEAD in a separate commit if there is consensus.

Thanks again,
Thomas ┼.
Received on 2012-11-11 23:28:58 CET

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