[Freeipa-devel] another snag with kerberos

Rob Crittenden rcritten at redhat.com
Tue Jul 17 12:23:49 UTC 2007


Andrew Bartlett wrote:
> On Mon, 2007-07-16 at 17:02 -0400, Rob Crittenden wrote:
>> Found another snag in the forwarding kerberos tickets via XML-RPC: the 
>> python xmlrpc library only supports Basic Authentication.
>>
>> The really aggravating part is that as far as I can tell you can't 
>> include extra headers to be send in the XMLRPC request, so we can't even 
>> include an Authorization header ourselves.
>>
>> And even if we could include our own headers I'm not sure how to 
>> hand-craft a Negotiate request.
> 
> That's the easy part:  base64 encode the blob that GSSAPI gives you.  
> 
>

Perhaps easy to you, someone know GSSAPI.

I looked at koji which uses python-krbv and was able to, I think, 
generate a request, but I'm not sure how to test it. The other thing is 
that my encoded blob is about 1/3 the size of the blob I see when other 
clients make successful requests.

There is still the problem of ticket forwarding too.

Some folks on the mod_auth_kerb mailing list mentioned setting the 
ok-as-delegate flag. Unfortunately this doesn't seem to be available in 
MIT kerberos.

rob
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