/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 *  glue routine for gss_store_cred
 */

#include <mechglueP.h>
#include "gssapiP_generic.h"
#include <errno.h>

static OM_uint32
val_store_cred_args(
        OM_uint32 *minor_status,
        const gss_cred_id_t input_cred_handle,
        gss_cred_usage_t cred_usage,
        /*LINTED*/
        const gss_OID desired_mech,
        /*LINTED*/
        OM_uint32 overwrite_cred,
        /*LINTED*/
        OM_uint32 default_cred,
        gss_OID_set *elements_stored,
        /*LINTED*/
        gss_cred_usage_t *cred_usage_stored)
{

        /* Initialize outputs. */

        if (minor_status != NULL)
                *minor_status = 0;

        if (elements_stored != NULL)
                *elements_stored = GSS_C_NULL_OID_SET;

       /* Validate arguments. */

        if (minor_status == NULL)
                return (GSS_S_CALL_INACCESSIBLE_WRITE);

        if (input_cred_handle == GSS_C_NO_CREDENTIAL)
                return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CRED);

        if (cred_usage != GSS_C_ACCEPT
            && cred_usage != GSS_C_INITIATE
            && cred_usage != GSS_C_BOTH) {
                if (minor_status) {
                        *minor_status = EINVAL;
                        map_errcode(minor_status);
                }
                return GSS_S_FAILURE;
        }

        return (GSS_S_COMPLETE);
}

OM_uint32 gss_store_cred(minor_status,
                        input_cred_handle,
                        cred_usage,
                        desired_mech,
                        overwrite_cred,
                        default_cred,
                        elements_stored,
                        cred_usage_stored)

OM_uint32               *minor_status;
const gss_cred_id_t      input_cred_handle;
gss_cred_usage_t         cred_usage;
const gss_OID            desired_mech;
OM_uint32                overwrite_cred;
OM_uint32                default_cred;
gss_OID_set             *elements_stored;
gss_cred_usage_t        *cred_usage_stored;

{
        OM_uint32               major_status = GSS_S_FAILURE;
        gss_union_cred_t        union_cred;
        gss_cred_id_t           mech_cred;
        gss_mechanism           mech;
        gss_OID                 dmech;
        int                     i;

        major_status = val_store_cred_args(minor_status,
                                           input_cred_handle,
                                           cred_usage,
                                           desired_mech,
                                           overwrite_cred,
                                           default_cred,
                                           elements_stored,
                                           cred_usage_stored);
        if (major_status != GSS_S_COMPLETE)
                return (major_status);

        /* Initial value needed below. */
                major_status = GSS_S_FAILURE;

        if (cred_usage_stored != NULL)
                *cred_usage_stored = GSS_C_BOTH; /* there's no GSS_C_NEITHER */

        union_cred = (gss_union_cred_t)input_cred_handle;

        /* desired_mech != GSS_C_NULL_OID -> store one element */
        if (desired_mech != GSS_C_NULL_OID) {
                mech = __gss_get_mechanism(desired_mech);
                if (mech == NULL)
                        return (GSS_S_BAD_MECH);

                if (mech->gss_store_cred == NULL)
                        return (major_status);

                mech_cred = __gss_get_mechanism_cred(union_cred, desired_mech);
                if (mech_cred == GSS_C_NO_CREDENTIAL)
                        return (GSS_S_NO_CRED);

                major_status = mech->gss_store_cred(mech->context,
                                                minor_status,
                                                (gss_cred_id_t)mech_cred,
                                                cred_usage,
                                                desired_mech,
                                                overwrite_cred,
                                                default_cred,
                                                elements_stored,
                                                    cred_usage_stored);
                if (major_status != GSS_S_COMPLETE)
                        map_error(minor_status, mech);
                return major_status;
        }

        /* desired_mech == GSS_C_NULL_OID -> store all elements */

        *minor_status = 0;

        for (i = 0; i < union_cred->count; i++) {
                /* Get mech and cred element */
                dmech = &union_cred->mechs_array[i];
                mech = __gss_get_mechanism(dmech);
                if (mech == NULL)
                        continue;

                if (mech->gss_store_cred == NULL)
                        continue;

                mech_cred = __gss_get_mechanism_cred(union_cred, dmech);
                if (mech_cred == GSS_C_NO_CREDENTIAL)
                        continue; /* can't happen, but safe to ignore */

                major_status = mech->gss_store_cred(mech->context,
                                                minor_status,
                                                (gss_cred_id_t)mech_cred,
                                                cred_usage,
                                                dmech,
                                                overwrite_cred,
                                                default_cred,
                                                NULL,
                                                cred_usage_stored);
                if (major_status != GSS_S_COMPLETE) {
                        map_error(minor_status, mech);
                        continue;
                }

                /* Succeeded for at least one mech */

                if (elements_stored == NULL)
                        continue;

                if (*elements_stored == GSS_C_NULL_OID_SET) {
                        major_status = gss_create_empty_oid_set(minor_status,
                                                elements_stored);

                        if (GSS_ERROR(major_status))
                                return (major_status);
                }

                major_status = gss_add_oid_set_member(minor_status, dmech,
                        elements_stored);

                /* The caller should clean up elements_stored */
                if (GSS_ERROR(major_status))
                        return (major_status);
        }

        /*
         * Success with some mechs may mask failure with others, but
         * that's what elements_stored is for.
         */
        return (major_status);
}