4fb6a6adc9
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).
151 lines
4.2 KiB
C
151 lines
4.2 KiB
C
/*
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* Copyright (c) 2004, PADL Software Pty Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of PADL Software nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $Id$ */
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#ifndef SPNEGO_LOCL_H
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#define SPNEGO_LOCL_H
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#include <config.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#include <roken.h>
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#ifdef HAVE_PTHREAD_H
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#include <pthread.h>
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#endif
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#include <krb5.h>
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#include <gssapi.h>
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#include <gssapi_krb5.h>
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#include <gssapi_spnego.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#include <heim_threads.h>
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#include <heimqueue.h>
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#include <asn1_err.h>
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#include <gssapi_mech.h>
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#include "spnego_asn1.h"
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#include "negoex_locl.h"
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#include "utils.h"
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#include <der.h>
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#include <heimbase.h>
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#define ALLOC(X, N) (X) = calloc((N), sizeof(*(X)))
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struct gssspnego_ctx_desc;
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typedef struct gssspnego_ctx_desc *gssspnego_ctx;
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typedef OM_uint32
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(*gssspnego_initiator_state)(OM_uint32 * minor_status,
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gss_const_cred_id_t cred,
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gssspnego_ctx ctx,
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gss_const_name_t name,
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gss_const_OID mech_type,
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OM_uint32 req_flags,
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OM_uint32 time_req,
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const gss_channel_bindings_t input_chan_bindings,
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gss_const_buffer_t input_token,
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gss_buffer_t output_token,
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OM_uint32 * ret_flags,
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OM_uint32 * time_rec);
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struct gssspnego_ctx_desc {
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gss_buffer_desc NegTokenInit_mech_types;
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gss_OID preferred_mech_type;
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gss_OID selected_mech_type;
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gss_OID negotiated_mech_type;
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gss_ctx_id_t negotiated_ctx_id;
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OM_uint32 mech_flags;
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OM_uint32 mech_time_rec;
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gss_name_t mech_src_name;
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struct spnego_flags {
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unsigned int open : 1;
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unsigned int local : 1;
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unsigned int require_mic : 1;
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unsigned int peer_require_mic : 1;
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unsigned int sent_mic : 1;
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unsigned int verified_mic : 1;
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unsigned int safe_omit : 1;
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unsigned int maybe_open : 1;
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unsigned int seen_supported_mech : 1;
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} flags;
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HEIMDAL_MUTEX ctx_id_mutex;
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gss_name_t target_name;
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gssspnego_initiator_state initiator_state;
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int negoex_step;
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krb5_storage *negoex_transcript;
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uint32_t negoex_seqnum;
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conversation_id negoex_conv_id;
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HEIM_TAILQ_HEAD(negoex_mech_list, negoex_auth_mech) negoex_mechs;
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};
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extern gss_OID_desc _gss_spnego_mskrb_mechanism_oid_desc;
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struct gssspnego_optimistic_ctx {
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gssspnego_ctx spnegoctx;
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OM_uint32 req_flags;
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gss_name_t target_name;
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OM_uint32 time_req;
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gss_channel_bindings_t input_chan_bindings;
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/* out */
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gss_OID preferred_mech_type;
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gss_OID negotiated_mech_type;
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gss_buffer_desc optimistic_token;
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OM_uint32 optimistic_flags, optimistic_time_rec;
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gss_ctx_id_t gssctx;
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int complete;
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auth_scheme scheme;
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};
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#include "spnego-private.h"
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#endif /* SPNEGO_LOCL_H */
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