Re: [gdm-list] how to use authentication feature of GDM in a screen saver

[Jedy Wang <Jedy Wang Sun COM>]

Any thoughts?

Regards,

Jedy

On 04/ 7/10 04:29 PM, Jedy Wang wrote:
> Hi maitainers of gdm,
>
> I am a developer from Desktop team of SUN. We plan to implement screen 
> saver support for gdm. Currently, I am trying to integrate GUI from 
> gnome-screensaver with PAM implemented in GDM and had a problem.
>
> As you know, GDM provides PAM feature through GreeterServer DBus 
> interface to simple greeter dialog and I want to use it as the 
> authentication backend for screen saver. But this interface is not a 
> public one. To call methods provided by GreeterServer, the client has 
> to connect to a private bus whose address can only be obtained through 
> a shell environment variable in login session. After the login, the 
> variable is gone .
>
> The solution I currently have is to add a DBus method (in SimpleSlave 
> maybe) which the screen saver process can call to obtain the private 
> bus address, then the process can use the address to connect to 
> GreeterServer and do authentication staff. But I am not sure if this 
> is a good idea because any process in the session can obtain the 
> address and may monitor the traffic on the bus. So I wan to know if 
> this is a acceptable solution for the community or if there are any 
> better ones?
>
> Thanks,
>
> Jedy
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