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Apache HTTPD setup

Describes how to setup an Apache WebServer, used for file exchange, in a BitRepository system.

Apache2

Install Apache2, mod_ssl and mod_dav if not pre-installed.

Debian based systems
$ a2enmod dav dav_fs dav_lock # Enable DAV
$ mkdir /path/to/www/dav      # Create directory for DAV
$ chown www-data:wwwdata /path/to/www/dav

$ a2enmod ssl                 # Enable SSL
$ a2ensite default-ssl        # Enable SSL site
RHEL
  1. yum install httpd mod_ssl
  2. mkdir -p /path/to/www/dav/
  3. chown apache:apche /path/to/www/dav/
  4. vim /etc/httpd/conf/httpd.conf (and change ServerName and enable WebDAV)
  5. mkdir /etc/httpd/ssl/
  6. generate self-signed key to /etc/httpd/ssl (and make sure it's only accessible by apache: chown apache:apache /path/to/server.key && chmod 600 /path/to/server.key)
  7. vim /etc/httpd/conf.d/ssl.conf
  8. service httpd start
  9. chkconfig httpd on
SSL Setup

Setup the SSL site (on debian /etc/apache2/sites-available/default-ssl, redhat: /etc/httpd/conf.d/ssl.conf) to use the relevant keys and certificates (see Create self signed certificate):

         SSLCertificateFile      /path/to/server.crt
         SSLCertificateKeyFile   /path/to/server.key
         SSLCACertificateFile    /path/to/trusted.crt
         SSLVerifyClient         require
         SSLVerifyDepth          0

SSLCACertificateFile is a concatenation of client certificates in PEM format (i.e. cat trusted_certs/*.crt > trusted.crt).

DAV Setup

To enable DAV on a specific location (it's not enabled for any directory by default), edit either ssl.conf (or default-ssl for debian) and add the following:

        Alias /dav/ /var/www/dav/

        <Location /dav>
                Dav On
        </Location>

The alias is needed since the directory is outside of the document root.

If the DAV directory should be accessible over HTTP (NOT advisable) add a similar configuration fragment to httpd.conf (or sites-enabled/000-default for debian).

If the above doesn't work (or the DAV directory isn't placed in the document root, the following can be used instead:

Alias /dav/ /path/to/dav/
<Directory /path/to/dav>
  Dav On
</Directory>

$ /etc/init.d/apache2 restart # Finally restart apache
or
$ service httpd restart
Testing

To verify that files can be uploaded to the dav directory, curl can be used:

curl -T <some_file_to_upload> <http://server/dav/>

And over https with client authentication (Note: it should only be possible to access the server over HTTPS if a valid key/certificate pair is presented):

curl --cacert <webserver.crt> --key <clientXX.key> --cert <clientXX.crt> -T <some_file_to_upload> <https://server/dav/>

References:
Apache default directory layuout
Apache SSL/TLS Encryption
Apache Module mod_dav

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