1/*	$OpenBSD: radius_local.h,v 1.1 2015/07/20 23:52:29 yasuoka Exp $ */
2
3/*-
4 * Copyright (c) 2009 Internet Initiative Japan Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef RADIUS_LOCAL_H
30#define RADIUS_LOCAL_H
31
32#ifndef countof
33#define countof(x) (sizeof(x)/sizeof((x)[0]))
34#endif
35
36typedef struct _RADIUS_PACKET_DATA {
37	uint8_t code;
38	uint8_t id;
39	uint16_t length;
40	uint8_t authenticator[16];
41	char attributes[0];
42}                   RADIUS_PACKET_DATA;
43#pragma pack(1)
44typedef struct _RADIUS_ATTRIBUTE {
45	uint8_t type;
46	uint8_t length;
47	char data[0];
48	uint32_t vendor;
49	uint8_t vtype;
50	uint8_t vlength;
51	char vdata[0];
52}                 RADIUS_ATTRIBUTE;
53#pragma pack()
54
55struct _RADIUS_PACKET {
56	RADIUS_PACKET_DATA *pdata;
57	size_t capacity;
58	const RADIUS_PACKET *request;
59};
60#define RADIUS_PACKET_CAPACITY_INITIAL   64
61#define RADIUS_PACKET_CAPACITY_INCREMENT 64
62
63#define ATTRS_BEGIN(pdata) ((RADIUS_ATTRIBUTE*)pdata->attributes)
64
65#define ATTRS_END(pdata) \
66    ((RADIUS_ATTRIBUTE*)(((char*)pdata) + ntohs(pdata->length)))
67
68#define ATTRS_NEXT(x) ((RADIUS_ATTRIBUTE*)(((char*)x) + x->length))
69
70/*
71 * must be expression rather than statement
72 * to be used in third expression of for statement.
73 */
74#define ATTRS_ADVANCE(x) (x = ATTRS_NEXT(x))
75
76int radius_ensure_add_capacity(RADIUS_PACKET * packet, size_t capacity);
77
78#define ROUNDUP(a, b)	((((a) + (b) - 1) / (b)) * (b))
79#define	MINIMUM(a, b)	(((a) < (b))? (a) : (b))
80
81#endif				/* RADIUS_LOCAL_H */
82