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auth/spnego: do basic state_position checking in gensec_spnego_update_in()

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Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Thu Jun 29 20:15:05 CEST 2017 on sn-devel-144
This commit is contained in:
Stefan Metzmacher 2017-06-14 03:29:58 +02:00 committed by Andreas Schneider
parent e9f1daa6f4
commit 6cddaa577b
1 changed files with 19 additions and 7 deletions
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26
auth/gensec/spnego.c
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@ -1383,14 +1383,9 @@ static struct tevent_req *gensec_spnego_update_send(TALLOC_CTX *mem_ctx,
&spnego_state->out_frag); &spnego_state->out_frag);
break; break;
case SPNEGO_DONE:
/* We should not be called after we are 'done' */
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
default: default:
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER); smb_panic(__location__);
return tevent_req_post(req, ev); return NULL;
} }
if (NT_STATUS_IS_OK(status)) { if (NT_STATUS_IS_OK(status)) {
@ -1434,6 +1429,23 @@ static NTSTATUS gensec_spnego_update_in(struct gensec_security *gensec_security,
*full_in = data_blob_null; *full_in = data_blob_null;
switch (spnego_state->state_position) {
case SPNEGO_FALLBACK:
*full_in = in;
spnego_state->in_needed = 0;
return NT_STATUS_OK;
case SPNEGO_CLIENT_START:
case SPNEGO_CLIENT_TARG:
case SPNEGO_SERVER_START:
case SPNEGO_SERVER_TARG:
break;
case SPNEGO_DONE:
default:
return NT_STATUS_INVALID_PARAMETER;
}
if (spnego_state->in_needed == 0) { if (spnego_state->in_needed == 0) {
size_t size = 0; size_t size = 0;
int ret; int ret;