According to the CORBA 3.0.3 spec (and I believe the original CSIv2 spec says the same):
Scoped-Username GSS Name Form
The scoped-username GSS name form is defined as follows, where name_value and
name_scope contain a sequence of 1 or more UTF8 encoded characters.

scoped-username ::= name_value | [EMAIL PROTECTED] | @name_scope

The '@' character shall be used to delimit name_value from name_scope. All nondelimiter
instances of '@' and all non-quoting instances of '\' shall be quoted with an
immediately-preceding '\'. Except for these cases, the quoting character, '\', shall not be
emitted within a scoped-username.

This suggests that the right way to fix this is to make the decoder tolerant to both name and [EMAIL PROTECTED]. I don't known how the third variant  - just @domain - is to be interpreted though.

I'm also uncertain how an empty domain part is to be interpreted. To be on the safe side, I would suggest always encoding the full form ([EMAIL PROTECTED]) and live with the redundancy.

Cheers,
/Jeppe

Aaron Mulder wrote:
So it turns out our GSSUP token encoder set the username to
[EMAIL PROTECTED] and the GSSUP token decoder did not lop off the
@domain part, so Geronimo could not talk to itself using GSSUP.

I changed the token encoder to just pass the username straight through
-- there is a separate field in the token that holds the domain, after
all, so mangling the username did not seem to make much sense.

Just want to make a note of this in case someone thinks it should be
changed the other way (that is, the GSSUP token encoder should send
[EMAIL PROTECTED] and the GSSUP token decoder should lop off and ignore
the @domain part, or compare the @domain to the domain that is sent in
the other field).

Thanks,
    Aaron

P.S. Actually the GSSUP token encoder set the username to
[EMAIL PROTECTED] due to an additional bug in the dynamic GSSUP
configuration, so I gather no one's actually used this code before. 
:)
  

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