Re: [Xen-API] Xen Management API draft

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Daniel P. Berrange wrote:
> On Mon, Jun 26, 2006 at 04:12:39PM +0100, Ewan Mellor wrote:
>   
> > On Sun, Jun 25, 2006 at 04:49:03PM +0100, Daniel P. Berrange wrote:
> >     
> > >  * What is the motivation for implementing an explicit login_with_password
> > >    method rather than utilizing the existing HTTP authentication protocols ?
> > >       
> > We discussed this on xen-devel last week -- HTTP auth doesn't seem to be
> > widely supported, so we didn't want to rely upon it.  Also, this way we can
> > use the XML-RPC over something other than HTTP (such as a raw unix domain
> > socket).
> >     
Nothing about our XML-RPC interfaces is widely supported.  We're talking 
about requiring per-call wrappers because of implicit typing?  We're 
talking about lots of code in the bindings.  A little more isn't going 
to hurt.
> > What would be involved in making this work?  The username / password is
> > already a step up for Xen -- how complicated is SASL or similar?
> >     
> I'm not familiar enough with it to give any estimates on work involved, but
> it would definitely be more complex than user/password, however, this is to
> be expected given the much broader capabilities. There's fairly comprehensive
> docs in the Cyrus SASL source distribution, for example,
>   
I can speak from experience dealing with SASL.  It's quite a nightmare 
to get right.  What complicates matters is the fact that the two 
difference kerberos libraries out there provide differing interfaces and 
I believe it is still the case that SuSE/RedHat ship different kerberoses.
XML-RPC over SSH would solve this general problem as PAM integrates 
quite nicely with any existing single sign-on.
BTW: I'm just getting to this mail from last week so I'll be responding 
a bit out of order.  Sorry.
Regards,

Anthony Liguori

>   http://www.indelible.org/php/sasl/cyrus-sasl/programming.html
>
> Another possibility would be to integrate with PAM, fully supporting the
> conversation function callbacks
>
> Regards,
> Dan.
>   

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