g_inq_name.c

/* -*- mode: c; indent-tabs-mode: nil -*- */
/*
 * Copyright 2009 by the Massachusetts Institute of Technology.
 * All Rights Reserved.
 *
 * Export of this software from the United States of America may
 *   require a specific license from the United States Government.
 *   It is the responsibility of any person or organization contemplating
 *   export to obtain such a license before exporting.
 *
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
 * distribute this software and its documentation for any purpose and
 * without fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation, and that
 * the name of M.I.T. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  Furthermore if you modify this software you must label
 * your software as modified software and not distribute it in such a
 * fashion that it might be confused with the original M.I.T. software.
 * M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 */

/* Glue routine for gss_inquire_name */

#include "mglueP.h"

OM_uint32 KRB5_CALLCONV
gss_inquire_name(OM_uint32 *minor_status,
                 gss_name_t name,
                 int *name_is_MN,
                 gss_OID *MN_mech,
                 gss_buffer_set_t *attrs)
{
    OM_uint32           status, tmp;
    gss_union_name_t    union_name;
    gss_mechanism       mech;

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

    if (MN_mech != NULL)
        *MN_mech = GSS_C_NO_OID;

    if (attrs != NULL)
        *attrs = GSS_C_NO_BUFFER_SET;

    if (minor_status == NULL)
        return GSS_S_CALL_INACCESSIBLE_WRITE;

    if (name == GSS_C_NO_NAME)
        return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_BAD_NAME;

    union_name = (gss_union_name_t)name;

    if (union_name->mech_type == GSS_C_NO_OID) {
        /* We don't yet support non-mechanism attributes */
        if (name_is_MN != NULL)
            *name_is_MN = 0;
        *minor_status = 0;
        return GSS_S_COMPLETE;
    }

    if (name_is_MN != NULL)
        *name_is_MN = 1;

    if (MN_mech != NULL) {
        status = generic_gss_copy_oid(minor_status,
                                      union_name->mech_type,
                                      MN_mech);
        if (GSS_ERROR(status))
            return status;
    }

    mech = gssint_get_mechanism(name->mech_type);
    if (mech == NULL) {
        gss_release_oid(&tmp, MN_mech);
        return GSS_S_BAD_NAME;
    }

    if (mech->gss_inquire_name == NULL) {
        gss_release_oid(&tmp, MN_mech);
        return GSS_S_UNAVAILABLE;
    }

    status = (*mech->gss_inquire_name)(minor_status,
                                       union_name->mech_name,
                                       NULL,
                                       NULL,
                                       attrs);
    if (status != GSS_S_COMPLETE) {
        generic_gss_release_oid(&tmp, MN_mech);
        map_error(minor_status, mech);
    }

    return status;
}