auth-mysql (c) 2005 by Torben H. Nielsen

this is a openvpn authentication plugin, which reads the user info from a 
mysql database. 

For this plugin, please use the table structure as defined in vpnauth.sql.

The plugin can be configured with the following parameters, which describes 
how the plugin should connect to mysql (with default values in parenthesis)
- host (localhost)
- username (vpnauth) //This user should have select and update rights on the 
                       table
- password (vpnauth)
- db (vpnauth)
- table (vpnauth)
- port (3306)


Usage examples:
;connect with the default values:
plugin /usr/lib/openvpn/auth-mysql.so

;Override some of the values;
plugin /usr/lib/openvpn/auth-mysql.so "host=mysqlserver01 password=secret"