Subversion, webdav, LDAP and folder restrictions

If you need to configure a svn server on Linux with LDAP authentication, webdav and insert specific directory restrictions you can follow these instructions.
1: you need to install subversion and apache in your Linux server (I will omit this part).
2: you need to configure webdav to access svn over http and configure LDAP access.

Make sure to have the following apache modules installed and configured:

LoadModule authnz_ldap_module modules/mod_authnz_ldap.so
LoadModule dav_module modules/mod_dav.so
LoadModule authn_alias_module modules/mod_authn_alias.so

I am usual to configure subversion in /srv/svn folder.
The users allowed to access the SVN have to belong to the LDAP group CN=SVN-AUTHORIZATION,OU=Groups GSO,DC=test,DC=example,DC=com
Edit the /etc/apache2/mods-enabled/dav_svn.conf (this is valid for Ubuntu. Maybe in other distros this file is placed somewhere) and make sure to have the following information:

<Location /svn/>
# Enable svn over webdav
DAV svn
# Set parent path for multiple repositories
SVNParentPath /srv/svn/
# Set authentication type
AuthType Basic
# Set authentication name
AuthName "FLR Subversion Repository"
# Set authorization (permissions) file
AuthzSVNAccessFile /etc/apache2/dav_svn.authz
# Allow to list the parent path
SVNListParentPath On
# Use LDAP for authentication
AuthBasicProvider ldap
# LDAP server is authoritative (so is the final step for autentication)
AuthzLDAPAuthoritative On
# LDAP bind user
AuthLDAPBindDN "CN=svnbind,OU=Users OS,DC=test,DC=example,DC=com"
# LDAP bind password
AuthLDAPBindPassword mypassword
# LDAP URL
AuthLDAPUrl "ldap://ldap_ip_address:389/DC=test,DC=example,DC=com?sAMAccountName?sub?(&(&(objectClass=user)(objectCategory=person))(memberof=CN=SVN-AUTHORIZATION,OU=Groups GSO,DC=test,DC=example,DC=com))"
# A valid user is required
Require valid-user
</Location>

3: Create the permission file /etc/apache2/dav_svn.authz
It will have the following content based on your needings:

[groups]
admin = matteo
group1 = user1, user2, user3
group2 = user2
group3 = user4
###################################
[/]
* = r
@admin = rw
###################################
[repository1:/]
* = rw
###################################
[repository2:/]
* =
@admin = rw
@group1 = rw
###################################
[repository3:/]
* =
@admin = rw
@group2 = rw
@group1 = r
###################################
[repository4:/]
* = r
@admin = rw
[repository4:/trunk/sources]
* = r
@admin = rw
@group3 = rw
###################################

Now restart apache with /etc/init.d/apache2 restart
4: Create repositories.
As root issue the following commands:

cd /srv/svn
svnadmin create repository1
chown www-data.www-data -R repository1
svnadmin create repository2
chown www-data.www-data -R repository2
svnadmin create repository3
chown www-data.www-data -R repository3
svnadmin create repository4
chown www-data.www-data -R repository4

You are now ready to use your new subversion repository with LDAP account, webdav access and custom user/group directory restrictions.
For Debian/Ubuntu user, please remember to enable mod authz_svn

$sudo a2enmod authz_svn