/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 2004, PADL Software Pty Ltd.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of PADL Software nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
/* RCSID("$Id: gss_set_cred_option.c 21126 2007-06-18 20:19:59Z lha $"); */

#include <gssapi/gssapi.h>
#include <stdlib.h>
#include <errno.h>

#include "mech_switch.h"
#include "cred.h"

OM_uint32
gss_set_cred_option (OM_uint32 *minor_status,
                     gss_cred_id_t *cred_handle,
                     const gss_OID object,
                     const gss_buffer_t value)
{
        struct _gss_cred *cred = (struct _gss_cred *) *cred_handle;
        OM_uint32       major_status = GSS_S_COMPLETE;
        struct _gss_mechanism_cred *mc;
        int one_ok = 0;

        *minor_status = 0;

        _gss_load_mech();

        if (cred == NULL) {
                struct _gss_mech_switch *m;

                cred = malloc(sizeof(*cred));
                if (cred == NULL)
                    return GSS_S_FAILURE;

                SLIST_INIT(&cred->gc_mc);

                SLIST_FOREACH(m, &_gss_mechs, gm_link) {

                        if (m->gm_set_cred_option == NULL)
                                continue;

                        mc = malloc(sizeof(*mc));
                        if (mc == NULL) {
                            *cred_handle = (gss_cred_id_t)cred;
                            gss_release_cred(minor_status, cred_handle);
                            *minor_status = ENOMEM;
                            return GSS_S_FAILURE;
                        }

                        mc->gmc_mech = m;
                        mc->gmc_mech_oid = &m->gm_mech_oid;
                        mc->gmc_cred = GSS_C_NO_CREDENTIAL;

                        major_status = m->gm_set_cred_option(
                            minor_status, &mc->gmc_cred, object, value);

                        if (major_status) {
                                free(mc);
                                continue;
                        }
                        one_ok = 1;
                        SLIST_INSERT_HEAD(&cred->gc_mc, mc, gmc_link);
                }
                *cred_handle = (gss_cred_id_t)cred;
                if (!one_ok) {
                        OM_uint32 junk;
                        gss_release_cred(&junk, cred_handle);
                }
        } else {
                struct _gss_mech_switch *m;

                SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
                        m = mc->gmc_mech;

                        if (m == NULL)
                                return GSS_S_BAD_MECH;

                        if (m->gm_set_cred_option == NULL)
                                continue;

                        major_status = m->gm_set_cred_option(minor_status,
                            &mc->gmc_cred, object, value);
                        if (major_status == GSS_S_COMPLETE)
                                one_ok = 1;
                        else
                                _gss_mg_error(m, major_status, *minor_status);

                }
        }
        if (one_ok) {
                *minor_status = 0;
                return (GSS_S_COMPLETE);
        }
        return (major_status);
}