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Re: Older versions through http-repository browsing

From: Phillip Susi <psusi_at_cfl.rr.com>
Date: 2005-08-22 20:33:30 CEST

I find that you can access older revisions via web browser by using URLs
like this:

https://server/svn/!svn/bc/123 where 123 is the revision number you seek.

I'm not sure why this isn't documented in the SVN book. According to
the DelvtaV standard, the URL syntax used to differentiate between
versions is left up to the server, and the client needs to use special
requests to ask the server what URL to use to access specific versions.
  I looked at apache's access log though and found that svn was using
URLs like the above, and gave it a try and it worked.

Michael Sinz wrote:
> solo turn wrote:
>>why is it not possible to extend webdav or deltav standard to also
>>have a means of retrieving a version/revision of a resource like:
>>which would allow normal apache access control on the url?
> Actually, using the rewrite trick that I have in the Insurrection tools,
> this sort of works. That is, the mod_authz_svn does all of the URL
> access controls because the access controls are handled before the
> .htaccess rewrite rules run.
>>is there any disadvantage in this approach i am not able to see?
> Other than making mod_dav_svn be more than what it is (and it already
> is a relatively large bit of code)
> There are other ways to get the same results since the rewrite rules for
> a directory apply after mod_authz_svn accepted the requested path.
> (If mod_authz_svn rejected the path, the rewrite engine never even gets
> a chance to run)
> For example, here is the .htaccess I use and one previous version:
> (note - in my setup, this goes into the "/" directory of the web server)
> http://svn.sinz.com/svn/Insurrection/trunk/.htaccess?Insurrection=get&r=221
> http://svn.sinz.com/svn/Insurrection/trunk/.htaccess?Insurrection=get&r=220
> Now, this is a repository that requires user authentication for read access:
> http://svn.sinz.com/svn/example2/trunk/fold/fold.html?Insurrection=get&r=6
> (Sorry, no public user name defined, but this is mod_authz_svn doing the
> authentication, just like it does for the SVN access rights)
> Note that there is no way to secure a revision number itself. So if you have
> access to the file, you have access to its history.
> The reason for the get operation is that I also use this to provide access
> controls on the log files, diffs, etc., that Insurrection provides the web
> interface for. It makes for a really nice interface to let mod_authz_svn
> do all of the authentication.

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Received on Mon Aug 22 20:34:46 2005

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