Luke Howard 8d19f3f47f gss: pass mechanism error tokens through SPNEGO ...

Fix for issue #486 based on a patch by Nico Williams.

A GSS-API acceptor can return an error token to be sent to the initiator. Our
SPNEGO implementation discarded these when sending a SPNEGO reject response.
This patch fixes the SPNEGO acceptor to convey those in the SPNEGO response.

The SPNEGO initiator is also updated to not bail out early on receiving a
SPNEGO reject response from the acceptor, but instead pass the response token
(if any) to gss_init_sec_context(). A reject response with no response token
will continue to return an error.

2020-04-24 15:07:55 +10:00

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