e80248ed36
GM_USE_MG_CRED allows a mechanism glue credential to be used by a mechanism without additional wrapping. Although no extant mechanisms use this flag, the flag had sporadic support in the mechanism glue already. In the interest of consistency, add missing GM_USE_MG_CRED checks. If this functionality is not desired, then all checks should be removed.
220 lines
7.4 KiB
C
220 lines
7.4 KiB
C
/*-
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* Copyright (c) 2005 Doug Rabson
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* Copyright (c) 2018 Kungliga Tekniska Högskolan
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* Copyright (c) 2018 AuriStor, Inc.
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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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* 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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* 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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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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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* $FreeBSD: src/lib/libgssapi/gss_add_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
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*/
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#include "mech_locl.h"
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OM_uint32
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_gss_mg_add_mech_cred(OM_uint32 *minor_status,
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gssapi_mech_interface m,
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const struct _gss_mechanism_cred *mc,
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const struct _gss_mechanism_name *mn,
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gss_cred_usage_t cred_usage,
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OM_uint32 initiator_time_req,
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OM_uint32 acceptor_time_req,
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gss_const_key_value_set_t cred_store,
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struct _gss_mechanism_cred **out,
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OM_uint32 *initiator_time_rec,
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OM_uint32 *acceptor_time_rec)
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{
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OM_uint32 major_status;
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struct _gss_mechanism_cred *new_mc = NULL;
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if (out) {
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*out = NULL;
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new_mc = calloc(1, sizeof(struct _gss_mechanism_cred));
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if (new_mc == NULL) {
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*minor_status = ENOMEM;
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return GSS_S_FAILURE;
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}
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new_mc->gmc_mech = m;
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new_mc->gmc_mech_oid = &m->gm_mech_oid;
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}
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if (m->gm_add_cred_from) {
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major_status = m->gm_add_cred_from(minor_status,
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mc ? mc->gmc_cred : GSS_C_NO_CREDENTIAL,
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mn ? mn->gmn_name : GSS_C_NO_NAME,
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&m->gm_mech_oid,
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cred_usage,
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initiator_time_req,
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acceptor_time_req,
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cred_store,
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new_mc ? &new_mc->gmc_cred : NULL,
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NULL,
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initiator_time_rec,
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acceptor_time_rec);
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} else if (cred_store == GSS_C_NO_CRED_STORE && m->gm_add_cred) {
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major_status = m->gm_add_cred(minor_status,
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mc ? mc->gmc_cred : GSS_C_NO_CREDENTIAL,
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mn ? mn->gmn_name : GSS_C_NO_NAME,
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&m->gm_mech_oid,
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cred_usage,
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initiator_time_req,
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acceptor_time_req,
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new_mc ? &new_mc->gmc_cred : NULL,
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NULL,
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initiator_time_rec,
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acceptor_time_rec);
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} else
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major_status = GSS_S_UNAVAILABLE;
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if (major_status == GSS_S_COMPLETE && out)
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*out = new_mc;
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else
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free(new_mc);
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return major_status;
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}
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GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
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gss_add_cred_from(OM_uint32 *minor_status,
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gss_cred_id_t input_cred_handle,
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gss_const_name_t desired_name,
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const gss_OID desired_mech,
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gss_cred_usage_t cred_usage,
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OM_uint32 initiator_time_req,
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OM_uint32 acceptor_time_req,
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gss_const_key_value_set_t cred_store,
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gss_cred_id_t *output_cred_handle,
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gss_OID_set *actual_mechs,
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OM_uint32 *initiator_time_rec,
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OM_uint32 *acceptor_time_rec)
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{
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OM_uint32 major_status;
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gssapi_mech_interface m;
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gss_cred_id_t release_cred = GSS_C_NO_CREDENTIAL;
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struct _gss_cred *mut_cred;
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struct _gss_mechanism_cred *mc;
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struct _gss_mechanism_cred *new_mc = NULL;
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struct _gss_mechanism_name *mn = NULL;
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OM_uint32 junk;
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*minor_status = 0;
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/* Input validation */
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if (output_cred_handle)
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*output_cred_handle = GSS_C_NO_CREDENTIAL;
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if (initiator_time_rec)
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*initiator_time_rec = 0;
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if (acceptor_time_rec)
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*acceptor_time_rec = 0;
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if (actual_mechs)
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*actual_mechs = GSS_C_NO_OID_SET;
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if ((m = __gss_get_mechanism(desired_mech)) == NULL ||
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(m->gm_flags & GM_USE_MG_CRED))
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return GSS_S_BAD_MECH;
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if (input_cred_handle == GSS_C_NO_CREDENTIAL &&
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output_cred_handle == NULL) {
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return GSS_S_CALL_INACCESSIBLE_WRITE;
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}
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/* Setup mut_cred to be the credential we mutate */
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if (input_cred_handle != GSS_C_NO_CREDENTIAL &&
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output_cred_handle != NULL) {
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gss_cred_id_t new_cred;
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/* Duplicate the input credential */
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major_status = gss_duplicate_cred(minor_status, input_cred_handle,
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&new_cred);
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if (major_status != GSS_S_COMPLETE)
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return major_status;
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mut_cred = (struct _gss_cred *)new_cred;
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release_cred = (gss_cred_id_t)mut_cred;
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} else if (input_cred_handle != GSS_C_NO_CREDENTIAL) {
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/* Mutate the input credentials */
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mut_cred = rk_UNCONST(input_cred_handle);
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} else {
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mut_cred = _gss_mg_alloc_cred();
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if (mut_cred == NULL) {
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*minor_status = ENOMEM;
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return GSS_S_UNAVAILABLE;
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}
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release_cred = (gss_cred_id_t)mut_cred;
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}
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/* Find an MN, if any */
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if (desired_name) {
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major_status = _gss_find_mn(minor_status,
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(struct _gss_name *)desired_name,
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desired_mech, &mn);
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if (major_status != GSS_S_COMPLETE)
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goto done;
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}
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/*
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* We go through all the mc attached to the input_cred_handle and check the
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* mechanism. If it matches, we call gss_add_cred for that mechanism,
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* otherwise we just add a new mc.
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*/
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HEIM_TAILQ_FOREACH(mc, &mut_cred->gc_mc, gmc_link) {
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if (!gss_oid_equal(mc->gmc_mech_oid, desired_mech))
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continue;
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major_status = _gss_mg_add_mech_cred(minor_status, m,
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mc, mn, cred_usage,
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initiator_time_req, acceptor_time_req,
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cred_store, NULL,
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initiator_time_rec, acceptor_time_rec);
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if (major_status != GSS_S_COMPLETE)
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_gss_mg_error(m, *minor_status);
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goto done;
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}
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major_status = _gss_mg_add_mech_cred(minor_status, m, NULL, mn, cred_usage,
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initiator_time_req, acceptor_time_req,
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cred_store, &new_mc,
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initiator_time_rec, acceptor_time_rec);
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if (major_status != GSS_S_COMPLETE) {
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_gss_mg_error(m, *minor_status);
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goto done;
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}
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HEIM_TAILQ_INSERT_TAIL(&mut_cred->gc_mc, new_mc, gmc_link);
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new_mc = NULL;
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done:
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/* Lastly, we have to inquire the cred to get the actual_mechs */
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if (major_status == GSS_S_COMPLETE && actual_mechs != NULL) {
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major_status = gss_inquire_cred(minor_status,
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(gss_const_cred_id_t)mut_cred, NULL,
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NULL, NULL, actual_mechs);
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}
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if (major_status == GSS_S_COMPLETE) {
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if (output_cred_handle != NULL)
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*output_cred_handle = (gss_cred_id_t)mut_cred;
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} else {
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gss_release_cred(&junk, &release_cred);
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}
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free(new_mc);
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return major_status;
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}
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