1/*-
2 * Copyright (c) 2003, 2004 David Young.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 3. The name of David Young may not be used to endorse or promote
13 *    products derived from this software without specific prior
14 *    written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
18 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
19 * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DAVID
20 * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
22 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
27 * OF SUCH DAMAGE.
28 */
29
30#ifndef _CPACK_H
31#define _CPACK_H
32
33struct cpack_state {
34	u_int8_t					*c_buf;
35	u_int8_t					*c_next;
36	size_t						 c_len;
37};
38
39int cpack_init(struct cpack_state *, u_int8_t *, size_t);
40
41int cpack_uint8(struct cpack_state *, u_int8_t *);
42int cpack_uint16(struct cpack_state *, u_int16_t *);
43int cpack_uint32(struct cpack_state *, u_int32_t *);
44int cpack_uint64(struct cpack_state *, u_int64_t *);
45
46u_int8_t *cpack_next_boundary(u_int8_t *buf, u_int8_t *p, size_t alignment);
47u_int8_t *cpack_align_and_reserve(struct cpack_state *cs, size_t wordsize);
48
49#define cpack_int8(__s, __p)	cpack_uint8((__s),  (u_int8_t*)(__p))
50#define cpack_int16(__s, __p)	cpack_uint16((__s), (u_int16_t*)(__p))
51#define cpack_int32(__s, __p)	cpack_uint32((__s), (u_int32_t*)(__p))
52#define cpack_int64(__s, __p)	cpack_uint64((__s), (u_int64_t*)(__p))
53
54extern int cpack_advance(struct cpack_state *, const size_t);
55
56#endif /* _CPACK_H */
57