principal name containing domain

Thu Oct 16 23:09:27 EDT 2014

I am very confused about what the ultimate goal of this process.

There is a common idiom to have what are called "host-based service
principals" (e.g., imap/imap.exchange.mit.edu at EXCHANGE.MIT.EDU), and
handling the corresponding DNS resolution of the hostname, etc..

The above principal name is a name with two "components", separated by the
forward slash '/' for the text representation.  In many data structures,
the '/' is not present, and the components are represented as (e.g.)
separate C strings.

I do not think there is any convention at all involving the use of
backward slashes '\' in principal names.  I am very surprised to see an
attempt to use them, and very not surprised that aspects of attempting to
use them are not working as expected.

-Ben Kaduk

On Sat, 11 Oct 2014, Bin Lu wrote:

> If I pass in "domain\\username", the converted principal name is "domainusername"; but if I pass in "domain\\\\username", the converted name becomes "domain\\username" (double backslash).
>
> -binlu
>
> -----Original Message-----
> From: krbdev-bounces at mit.edu [mailto:krbdev-bounces at mit.edu] On Behalf Of Bin Lu
> Sent: Saturday, October 11, 2014 4:23 PM
> To: krbdev at mit.edu
> Subject: principal name containing domain
>
> <html>
> Hi,
>
> I created a principal with user name containing the domain name (in format of <domainname>\<username>) using krb5_parse_name(). But when I converted it back using krb5_unparse_name(), the backslash ("\") is disappeared and the name became <domainname><username>.
>
> What is the right way to pass the username with domain name in the principal?
>
> Thanks,
> -binlu
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