[Libvir] PATCH: 7/10: python auth callback API

[Daniel P. Berrange]

On Tue, Dec 04, 2007 at 10:10:28PM +0100, Jim Meyering wrote:
> "Daniel P. Berrange" <berrange at redhat.com> wrote:
> > This adds a binding for the virConnectOpenAuth() api in the python
> > API. This allows a python function to be used as the callback.
> >
> > This short example code illustrates the use of the API from a
> > python app which wants to support username/password credentials
> > only.
> >
> >   from getpass import getpass
> >   mydata = "Hello"
> >
> >   def getCred(creds, data):
> >       print "yes"
> >       print str(creds)
> >       for cred in creds:
> >           print cred[1] + ": ",
> >           if cred[0] == libvirt.VIR_CRED_AUTHNAME:
> >               data = sys.stdin.readline()
> >               data = data[0:len(data)-1]
> >               cred[4] = data
> >           elif cred[0] == libvirt.VIR_CRED_PASSPHRASE:
> >              cred[4] = getpass("")
> >           else:
> >              return -1
> >       return 0
> >
> >   uri = "qemu+tcp://localhost/system"
> >   conn = libvirt.openAuth(uri,
> >                           [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_PASSPHRASE],
> >                            getCred,
> >                            mydata], 0)
> >
> >
> >   print str(conn.listDefinedDomains())
> 
> Nice.
> One nit:
> 
> > diff -r 8a79678f789f python/libvir.c
> > --- a/python/libvir.c	Wed Nov 28 23:01:30 2007 -0500
> > +++ b/python/libvir.c	Wed Nov 28 23:29:40 2007 -0500
> ...
> > +static PyObject *
> > +libvirt_virConnectOpenAuth(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) {
> ...
> > +    auth.ncredtype = PyList_Size(pycredtype);
> > +    if (auth.ncredtype) {
> > +        int i;
> > +        auth.credtype = malloc(sizeof(int) * auth.ncredtype);
> 
> Check for malloc failure:
> 
>         if (!auth.credtype)
>             return NULL;

Committed with this fix included.

Regards,
Dan.
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