/*-
* Copyright (c) 2003, 2004 David Young.  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 DAVID YOUNG ``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 DAVID
* YOUNG 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.
*/

#ifndef ND_CPACK_H
#define ND_CPACK_H

#include "netdissect.h"

struct cpack_state {
       const uint8_t                                   *c_buf;
       const uint8_t                                   *c_next;
       size_t                                           c_len;
};

int nd_cpack_init(struct cpack_state *, const uint8_t *, size_t);

int nd_cpack_uint8(netdissect_options *, struct cpack_state *, uint8_t *);
int nd_cpack_int8(netdissect_options *, struct cpack_state *, int8_t *);
int nd_cpack_uint16(netdissect_options *, struct cpack_state *, uint16_t *);
int nd_cpack_int16(netdissect_options *, struct cpack_state *, int16_t *);
int nd_cpack_uint32(netdissect_options *, struct cpack_state *, uint32_t *);
int nd_cpack_int32(netdissect_options *, struct cpack_state *, int32_t *);
int nd_cpack_uint64(netdissect_options *, struct cpack_state *, uint64_t *);
int nd_cpack_int64(netdissect_options *, struct cpack_state *, int64_t *);

const uint8_t *nd_cpack_next_boundary(const uint8_t *buf, const uint8_t *p, size_t alignment);
const uint8_t *nd_cpack_align_and_reserve(struct cpack_state *cs, size_t wordsize);

extern int nd_cpack_advance(struct cpack_state *, const size_t);

#endif /* ND_CPACK_H */