Logo DokuWiki DokuWiki is a very nice wiki programmed in PHP that does not use any database. It is very simple to setup and use. As I am using the lighttpd web server instead of Apache, making a secure installation requires a configuration a bit different from the usual one.

Here is the configuration I am using. Contrary to our installation in Niadomo, I'm using the original source tarball and not the Debian package. It is heavily inspired by installation documentation and security documentation of DokuWiki. I strongly recommend to read this security documentation before doing any installation.

DokuWiki installation

We firstly download and configure DokuWiki so the installed wiki is available as example.com/mydoku, assuming example.com is the name of your web site. I am assuming /var/www is the root directory of your lighttpd server.

 $ cd /tmp
 $ wget http://www.splitbrain.org/_media/projects/dokuwiki/dokuwiki-2009-02-14b.tgz
 $ tar zxf dokuwiki-2009-02-14b.tgz
 
 $ sudo mv /tmp/dokuwiki-2009-02-14 /var/www/mydoku
 $ sudo chown -R www-data:www-data /var/www/mydoku

We then access the configuration script http://example.com/mydoku/install.php to configure it. I won't detail this part as it is up to you to choose a configuration that suites your needs. Refer to DokuWiki install.php instructions for further details.

Making DokuWiki secure

Firstly, we remove the installation script no longer necessary.

 $ sudo rm /var/www/mydoku/install.php

Secondly, we move data/ and bin/ dokuwiki's directories in a separated directory, /usr/local/installed/mydoku. You can choose any directory that suites your setting but it should be outside of the root directory of your web server, in my case /var/www.

 $ sudo mkdir -p /usr/local/installed/mydoku
 
 $ sudo mv /var/www/mydoku/bin /usr/local/installed/mydoku/
 $ sudo mv /var/www/mydoku/data /usr/local/installed/mydoku/
 
 $ sudo mv /var/www/mydoku/README /usr/local/installed/mydoku/
 $ sudo mv /var/www/mydoku/VERSION /usr/local/installed/mydoku/
 $ sudo mv /var/www/mydoku/COPYING /usr/local/installed/mydoku/

Then we configure conf/local.php so that the installed dokuwiki knows how to look for its data and binaries. We use for this the $conf['savedir'] functionnality[1]. We also configure allowdebug to 0, to avoid giving information to attackers in case of error.

 $ sudo vi /var/www/mydoku/conf/local.php

We add the following two lines:

 $conf['savedir'] = '/usr/local/installed/mydoku/data';
 $conf['allowdebug']  = 0;

We then configure lighttpd to avoid deny accesses to inc/ and conf/ directories. We use the very specific Debian way, creating a dedicated lighttpd configuration file and activating it.

$ cat > /etc/lighttpd/conf-available/11-dokuwiki.conf

Add following content:

  $HTTP["url"] =~ "^/mydoku/inc" {
    url.access-deny = ("")
  }
  else $HTTP["url"] =~ "^/mydoku/conf" {
    url.access-deny = ("")
  }

I am simply using regular expressions to deny access to the two directories.

We then enable this configuration and restart dokuwiki.

 $ sudo lighty-enable-mod dokuwiki
 $ sudo invoke-rc.d lighttpd restart

You can now check that the accesses to http://example.com/mydoku/conf/local.php or http://example.com/mydoku/inc/io.php are now denied.

Have fun with your new wiki!

Notes

[1] Some people would call that a hack. ;-)