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Re: Subversion access control

From: Geoff Hoffman <ghoffman_at_cardinalpath.com>
Date: Thu, 21 Jul 2011 08:14:03 -0700

On Wed, Jul 20, 2011 at 9:14 PM, Andy Canfield <andy.canfield_at_pimco.mobi>wrote:

> **
> Thank you very much.
>
>
> On 07/20/2011 12:19 PM, Nico Kadel-Garcia wrote:
>
> On Tue, Jul 19, 2011 at 11:14 PM, Andy Canfield<andy.canfield_at_pimco.mobi> <andy.canfield_at_pimco.mobi> wrote:
>
> One thing has hit my mind today that I don't think you realize ...
>
> I have never, in my entire life, seen a working Subversion system.
>
> Apparently Subversion, as distributed, doesn't work - the access
> authentications are deliberately turned off.
>
> I'm afraid it depends on your access requirements. Seriously. Which
> access technology are you using? svn+ssh (which I tend to recommend),
> or Apache (using https://), or svn directorly (svn://) Start with that
> and we'll walk you through it.
>
>
> OK, here goes.
>
> I would like to use http/https. I am not supposed to be working on the
> server, but on my notebook workstation. And svn or svn+ssh require port 3690
> to be forwarded by the router, and we don't own the router. So I would
> prefer http and/or https.
>
> But on the actual server https is screwed up because mod_dev_svn.so is a
> year earlier than Apache, and apparently there is a version mismatch. When
> svn is enabled apache is dead. I have put in a request for my friend to
> re-install, but that could take a week.
>
> So for the interim I have installed mod_dav etc. on my notebook computer.
> FYI it is running Ubuntu Linux 1.04. This is for testing.
>
> Directory /etc/apache2/modes-enabled contains the file dav.load with this
> contents:
> * LoadModule dav_module /usr/lib/apache2/modules/mod_dav.so*
> That same directoy also contains the file dav_syn.load with these contents:
> * # Depends: dav
> LoadModule dav_svn_module /usr/lib/apache2/modules/mod_dav_svn.so
> LoadModule authz_svn_module /usr/lib/apache2/modules/mod_authz_svn.so*
> That same directory also contains the file dav_svn.conf which I altered;
> this is the altered contents:
> *# dav_svn.conf - Example Subversion/Apache configuration
> #
> # For details and further options see the Apache user manual and
> # the Subversion book.
> #
> # NOTE: for a setup with multiple vhosts, you will want to do this
> # configuration in /etc/apache2/sites-available/*, not here.
>
> # <Location URL> ... </Location>
> # URL controls how the repository appears to the outside world.
> # In this example clients access the repository as http://hostname/svn/
> # Note, a literal /svn should NOT exist in your document root.
>
> <Location /svn>
>
> # Uncomment this to enable the repository
> DAV svn
>
> # Set this to the path to your repository
> #SVNPath /var/lib/svn
>
> # Alternatively, use SVNParentPath if you have multiple repositories
> under
> # under a single directory (/var/lib/svn/repo1, /var/lib/svn/repo2, ...).
> # You need either SVNPath and SVNParentPath, but not both.
> #SVNParentPath /var/lib/svn
> SVNParentPath /data/svn
>
>
> # Access control is done at 3 levels: (1) Apache authentication, via
> # any of several methods. A "Basic Auth" section is commented out
> # below. (2) Apache <Limit> and <LimitExcept>, also commented out
> # below. (3) mod_authz_svn is a svn-specific authorization module
> # which offers fine-grained read/write access control for paths
> # within a repository. (The first two layers are coarse-grained; you
> # can only enable/disable access to an entire repository.) Note that
> # mod_authz_svn is noticeably slower than the other two layers, so if
> # you don't need the fine-grained control, don't configure it.
>
> # Basic Authentication is repository-wide. It is not secure unless
> # you are using https. See the 'htpasswd' command to create and
> # manage the password file - and the documentation for the
> # 'auth_basic' and 'authn_file' modules, which you will need for this
> # (enable them with 'a2enmod').
> #AuthType Basic
> #AuthName "Subversion Repository"
> #AuthUserFile /etc/apache2/dav_svn.passwd
> AuthType Basic
> AuthName "Lenny Subversion Repository"
>
> AuthUserFile /etc/apache2/dav_svn.passwd
>
> # To enable authorization via mod_authz_svn
> #AuthzSVNAccessFile /etc/apache2/dav_svn.authz
>
> # The following three lines allow anonymous read, but make
> # committers authenticate themselves. It requires the 'authz_user'
> # module (enable it with 'a2enmod').
> #<LimitExcept GET PROPFIND OPTIONS REPORT>
> #Require valid-user
> #</LimitExcept>
> *
> * Require valid-user*
> *
> </Location>
> *
> By the way, all three of the above files in /etc/apache2/mods-enabled are
> actually symbolic links to the same file name in ../mods-available.
>
> I used sudo htpasswd to create the /etc/apache2/dav_svn.passwd file:
> * andy:4izmp7W8TSqww*
>
> Also I created my subversion directory like this:\
> * sudo bash
> mkdir /data/svn
> chmod a+w /data/svn*
> *ls /data/svn
> ** drwxrwxrwx 2 root root 4096 2011-07-21 10:53 /data/svn*
>
> Now I point my browser to http://localhost/svn and I get a prompt for a
> user name and password. If I type in my valid user name "andy" and a
> completely spurious password, I get prompted again. But if I type in my
> valid user name and password (as given when I created the dav_svn.passwd
> file), the result is:
> * Forbidden
> You don't have permission to access /svn on this server.
> Apache/2.2.17 (Ubuntu) Server at localhost Port 80*
>
> Of course the /data/svn file is completely empty; there's nothing in it.
> OK, so I try to put something in it:
> * svnadmin create /data/svn/sample
> *
> Now when I point my browser at http://localhost/svn I get the same
> "Forbidden" message as before. However, when I point my browser to
> "http://localhost/svn/sample" <http://localhost/svn/sample> I see a very
> simple web page:
> * sample - Revision 0: /
> Powered by Subversion version 1.6.12 (r955767).*
> Well, that's something. Doesn't give me any list of repositories, but it's
> something.
>
> Isn't http://localhost/svn supposed to show me something useful?
>
>
One would think so, yes. I get the same thing, Andy.

Going to http://[mysvnserver]/svn I can login at the .htaccess prompt, and
get forbidden. I have SVNListParentPath on also inside the <Location /svn>
directive. I tried to
sudo chown -R www-data:www-data /data/svn
but it had no effect on the list. The error it is throwing is

[Thu Jul 21 08:09:38 2011] [error] [client my-ip-add-ress] The URI does not
contain the name of a repository. [403, #190001]
Received on 2011-07-21 17:14:41 CEST

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