735039dbdc
Implementation of gss_set_neg_mechs() and gss_get_neg_mechs() as defined in RFC 4178. New gss_release_cred_by_mech() API for dropping a credential from a mechanism glue credential.
114 lines
3.4 KiB
C
114 lines
3.4 KiB
C
/*
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* Copyright (c) 2018, 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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#include "mech_locl.h"
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GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
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gss_get_neg_mechs (OM_uint32 *minor_status,
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gss_const_cred_id_t cred_handle,
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gss_OID_set *mechs)
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{
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struct _gss_cred *cred = (struct _gss_cred *)cred_handle;
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OM_uint32 major, minor;
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gss_cred_id_t tmp_cred = GSS_C_NO_CREDENTIAL;
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struct _gss_mechanism_cred *mc;
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if (minor_status == NULL)
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return GSS_S_CALL_INACCESSIBLE_WRITE;
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*minor_status = 0;
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if (mechs == NULL)
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return GSS_S_CALL_INACCESSIBLE_WRITE;
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*mechs = GSS_C_NO_OID_SET;
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_gss_load_mech();
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if (cred == NULL) {
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major = gss_acquire_cred(minor_status, GSS_C_NO_NAME, GSS_C_INDEFINITE,
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GSS_C_NO_OID_SET, GSS_C_BOTH,
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&tmp_cred, NULL, NULL);
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if (GSS_ERROR(major))
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return major;
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cred = (struct _gss_cred *)tmp_cred;
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}
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major = gss_create_empty_oid_set(minor_status, mechs);
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if (GSS_ERROR(major))
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goto cleanup;
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major = GSS_S_UNAVAILABLE;
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HEIM_SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
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gssapi_mech_interface m;
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gss_OID_set mechs2 = GSS_C_NO_OID_SET;
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size_t i;
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m = mc->gmc_mech;
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if (m == NULL) {
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major = GSS_S_BAD_MECH;
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goto cleanup;
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}
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if (m->gm_get_neg_mechs == NULL)
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continue;
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major = m->gm_get_neg_mechs(minor_status, mc->gmc_cred, &mechs2);
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if (GSS_ERROR(major))
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goto cleanup;
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if (mechs2 == GSS_C_NO_OID_SET)
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continue;
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for (i = 0; i < mechs2->count; i++) {
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major = gss_add_oid_set_member(minor_status, &mechs2->elements[i],
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mechs);
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if (GSS_ERROR(major)) {
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gss_release_oid_set(&minor, &mechs2);
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goto cleanup;
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}
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}
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gss_release_oid_set(&minor, &mechs2);
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}
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cleanup:
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if (tmp_cred)
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gss_release_cred(&minor, &tmp_cred);
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if (major == GSS_S_COMPLETE && *mechs == GSS_C_NO_OID_SET)
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major = GSS_S_NO_CRED;
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if (GSS_ERROR(major))
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gss_release_oid_set(&minor, mechs);
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return major;
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}
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