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).
166 lines
4.6 KiB
C
166 lines
4.6 KiB
C
/*
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* Copyright (c) 2004, PADL Software Pty Ltd.
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* Copyright (c) 2018 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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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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#include "spnego_locl.h"
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#include <gssapi_mech.h>
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/*
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* RFC2478, SPNEGO:
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* The security mechanism of the initial
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* negotiation token is identified by the Object Identifier
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* iso.org.dod.internet.security.mechanism.snego (1.3.6.1.5.5.2).
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*/
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static gss_mo_desc spnego_mo[] = {
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{
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GSS_C_MA_SASL_MECH_NAME,
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GSS_MO_MA,
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"SASL mech name",
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rk_UNCONST("SPNEGO"),
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_gss_mo_get_ctx_as_string,
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NULL
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},
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{
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GSS_C_MA_MECH_NAME,
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GSS_MO_MA,
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"Mechanism name",
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rk_UNCONST("SPNEGO"),
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_gss_mo_get_ctx_as_string,
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NULL
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},
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{
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GSS_C_MA_MECH_DESCRIPTION,
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GSS_MO_MA,
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"Mechanism description",
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rk_UNCONST("Heimdal SPNEGO Mechanism"),
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_gss_mo_get_ctx_as_string,
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NULL
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},
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{
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GSS_C_MA_MECH_NEGO,
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GSS_MO_MA,
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NULL,
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NULL,
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NULL,
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NULL
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},
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{
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GSS_C_MA_MECH_PSEUDO,
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GSS_MO_MA,
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NULL,
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NULL,
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NULL,
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NULL
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}
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};
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static gssapi_mech_interface_desc spnego_mech = {
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GMI_VERSION,
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"spnego",
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{6, rk_UNCONST("\x2b\x06\x01\x05\x05\x02") },
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0,
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NULL, /* gm_acquire_cred */
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_gss_spnego_release_cred,
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_gss_spnego_init_sec_context,
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_gss_spnego_accept_sec_context,
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_gss_spnego_process_context_token,
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_gss_spnego_delete_sec_context,
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_gss_spnego_context_time,
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_gss_spnego_get_mic,
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_gss_spnego_verify_mic,
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_gss_spnego_wrap,
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_gss_spnego_unwrap,
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NULL, /* gm_display_status */
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NULL, /* gm_indicate_mechs */
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_gss_spnego_compare_name,
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_gss_spnego_display_name,
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_gss_spnego_import_name,
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_gss_spnego_export_name,
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_gss_spnego_release_name,
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_gss_spnego_inquire_cred,
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_gss_spnego_inquire_context,
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_gss_spnego_wrap_size_limit,
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gss_add_cred,
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_gss_spnego_inquire_cred_by_mech,
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_gss_spnego_export_sec_context,
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_gss_spnego_import_sec_context,
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NULL /* _gss_spnego_inquire_names_for_mech */,
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_gss_spnego_inquire_mechs_for_name,
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_gss_spnego_canonicalize_name,
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_gss_spnego_duplicate_name,
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_gss_spnego_inquire_sec_context_by_oid,
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_gss_spnego_inquire_cred_by_oid,
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_gss_spnego_set_sec_context_option,
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_gss_spnego_set_cred_option,
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_gss_spnego_pseudo_random,
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_gss_spnego_wrap_iov,
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_gss_spnego_unwrap_iov,
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_gss_spnego_wrap_iov_length,
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NULL,
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_gss_spnego_export_cred,
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_gss_spnego_import_cred,
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_gss_spnego_acquire_cred_from,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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spnego_mo,
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sizeof(spnego_mo) / sizeof(spnego_mo[0]),
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NULL, /* gm_localname */
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NULL, /* gm_authorize_localname */
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NULL, /* gm_display_name_ext */
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NULL, /* gm_inquire_name */
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NULL, /* gm_get_name_attribute */
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NULL, /* gm_set_name_attribute */
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NULL, /* gm_delete_name_attribute */
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NULL, /* gm_export_name_composite */
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NULL, /* gm_duplicate_cred */
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gss_add_cred_from,
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NULL, /* gm_store_cred_into */
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_gss_spnego_set_neg_mechs,
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_gss_spnego_get_neg_mechs,
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NULL, /* gm_query_mechanism_info */
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NULL, /* gm_query_meta_data */
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NULL, /* gm_exchange_meta_data */
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NULL /* gm_compat */
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};
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gssapi_mech_interface
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__gss_spnego_initialize(void)
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{
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return &spnego_mech;
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}
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