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gss: port NegoEx implementation from MIT

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An implementation of draft-zhu-negoex-04 for MIT Kerberos was developed in
2011. This has been recently integrated, with many fixes from Greg Hudson. This
commit ports it to Heimdal. The implementation has been interoperability tested
with MIT Kerberos and Windows, using the GSS EAP mechanism developed as part of
the Moonshot project.

The SPNEGO code was also updated to import the state machine from Apple which
improves mechListMIC processing and avoids discarding initial context tokens
generated during mechanism probing, that can be used for optimistic tokens.

Finally, to aid in testing, the GSS-API mechanism glue configuration file can
be changed using the environment variable GSS_MECH_CONFIG. This environment
variable name, along with the format of the configuration file, is compatible
with MIT (although it would be difficult for a single mechanism binary to
support both implementations).
This commit is contained in:
Luke Howard
2019-12-30 13:34:10 +11:00
parent ae5c60286a
commit 4fb6a6adc9
45 changed files with 6241 additions and 863 deletions
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8
lib/gssapi/mech/gss_init_sec_context.c
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@@ -30,8 +30,10 @@
#include "mech_locl.h"
static gss_cred_id_t
_gss_mech_cred_find(gss_const_cred_id_t cred_handle, gss_OID mech_type)
gss_cred_id_t
_gss_mg_find_mech_cred(
gss_const_cred_id_t cred_handle,
gss_const_OID mech_type)
{
struct _gss_cred *cred = (struct _gss_cred *)cred_handle;
struct _gss_mechanism_cred *mc;
@@ -227,7 +229,7 @@ gss_init_sec_context(OM_uint32 * minor_status,
if (m->gm_flags & GM_USE_MG_CRED)
cred_handle = initiator_cred_handle;
else
cred_handle = _gss_mech_cred_find(initiator_cred_handle, mech_type);
cred_handle = _gss_mg_find_mech_cred(initiator_cred_handle, mech_type);
if (initiator_cred_handle != GSS_C_NO_CREDENTIAL &&
cred_handle == NULL) {