/*-
 * Copyright (c) 2005 Doug Rabson
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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.
 *
 *	$FreeBSD: src/lib/libgssapi/gss_inquire_mechs_for_name.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
 */

#include "mech_locl.h"

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
gss_inquire_mechs_for_name(OM_uint32 *minor_status,
    const gss_name_t input_name,
    gss_OID_set *mech_types)
{
	OM_uint32		major_status;
	struct _gss_name	*name = (struct _gss_name *) input_name;
	struct _gss_mech_switch	*m;
	gss_OID_set		name_types;
	int			present;

	*minor_status = 0;

	_gss_load_mech();

	major_status = gss_create_empty_oid_set(minor_status, mech_types);
	if (major_status)
		return (major_status);

	/*
	 * We go through all the loaded mechanisms and see if this
	 * name's type is supported by the mechanism. If it is, add
	 * the mechanism to the set.
	 */
	HEIM_SLIST_FOREACH(m, &_gss_mechs, gm_link) {
		major_status = gss_inquire_names_for_mech(minor_status,
		    &m->gm_mech_oid, &name_types);
		if (major_status) {
			gss_release_oid_set(minor_status, mech_types);
			return (major_status);
		}
		gss_test_oid_set_member(minor_status,
		    &name->gn_type, name_types, &present);
		gss_release_oid_set(minor_status, &name_types);
		if (present) {
			major_status = gss_add_oid_set_member(minor_status,
			    &m->gm_mech_oid, mech_types);
			if (major_status) {
				gss_release_oid_set(minor_status, mech_types);
				return (major_status);
			}
		}
	}

	return (GSS_S_COMPLETE);
}