Certificate Login plugin

[grooverdan]

#1485224 (API plugin for client certificate authentication) ? RoundCube Webmail is a certificate login plugin. Just place this attachment Attachment ? RoundCube Webmail into a certificatelogon directory and enable it.

It requires the web server, Apache only afaik, to be configured to request a client side certificate off the user. This plugin uses the SSL information provided by the web server to search for an email address. Once found this represent the authentication data. The imap server needs to accept a common password for all users which is managed within the PHP code.

I'm happy to help out with problems or suggested improvements.