Configure Guacamole 0.9.7 on Linux to have single sign on (using hmac auth)

You must be able to use this link: [login to view URL] The problem is the past version works with 0.9.3, but here the credentials aren't passed via URL, or there is a backend problem. If you can create a new authentication plugin, it'll be better too: [login to view URL] The reason I want a single sign on, is that a user should click on a Php link and it should redirect him to guacamole. You must be very experienced in Linux and Java script before bidding. Please serious only.