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  *   lY>Xځf )FyY_I|+ "    /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 * Copyright 2013 Red Hat, Inc.  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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
 * 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.
 */

/*
 * This API is not considered as stable as the main krb5 API.
 *
 * - We may make arbitrary incompatible changes between feature releases
 *   (e.g. from 1.12 to 1.13).
 * - We will make some effort to avoid making incompatible changes for
 *   bugfix releases, but will make them if necessary.
 */

#ifndef KRAD_H_
#define KRAD_H_

#include <krb5.h>
#include <verto.h>
#include <stddef.h>
#include <stdio.h>

#define KRAD_PACKET_SIZE_MAX 4096

#define KRAD_SERVICE_TYPE_LOGIN 1
#define KRAD_SERVICE_TYPE_FRAMED 2
#define KRAD_SERVICE_TYPE_CALLBACK_LOGIN 3
#define KRAD_SERVICE_TYPE_CALLBACK_FRAMED 4
#define KRAD_SERVICE_TYPE_OUTBOUND 5
#define KRAD_SERVICE_TYPE_ADMINISTRATIVE 6
#define KRAD_SERVICE_TYPE_NAS_PROMPT 7
#define KRAD_SERVICE_TYPE_AUTHENTICATE_ONLY 8
#define KRAD_SERVICE_TYPE_CALLBACK_NAS_PROMPT 9
#define KRAD_SERVICE_TYPE_CALL_CHECK 10
#define KRAD_SERVICE_TYPE_CALLBACK_ADMINISTRATIVE 11

typedef struct krad_attrset_st krad_attrset;
typedef struct krad_packet_st krad_packet;
typedef struct krad_client_st krad_client;
typedef unsigned char krad_code;
typedef unsigned char krad_attr;

/* Called when a response is received or the request times out. */
typedef void
(*krad_cb)(krb5_error_code retval, const krad_packet *request,
           const krad_packet *response, void *data);

/*
 * Called to iterate over a set of requests.  Either the callback will be
 * called until it returns NULL, or it will be called with cancel = TRUE to
 * terminate in the middle of an iteration.
 */
typedef const krad_packet *
(*krad_packet_iter_cb)(void *data, krb5_boolean cancel);

/*
 * Code
 */

/* Convert a code name to its number. Only works for codes defined
 * by RFC 2875 or 2882. Returns 0 if the name was not found. */
krad_code
krad_code_name2num(const char *name);

/* Convert a code number to its name. Only works for attributes defined
 * by RFC 2865 or 2882. Returns NULL if the name was not found. */
const char *
krad_code_num2name(krad_code code);

/*
 * Attribute
 */

/* Convert an attribute name to its number. Only works for attributes defined
 * by RFC 2865. Returns 0 if the name was not found. */
krad_attr
krad_attr_name2num(const char *name);

/* Convert an attribute number to its name. Only works for attributes defined
 * by RFC 2865. Returns NULL if the name was not found. */
const char *
krad_attr_num2name(krad_attr type);

/*
 * Attribute set
 */

/* Create a new attribute set. */
krb5_error_code