lib/libgss/g_store_cred.c

/*
 * 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, 2011, Oracle and/or its affiliates. All rights reserved.
 */

/*
 *  glue routine for gss_store_cred
 */

#include <mglueP.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(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(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);
}