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      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  *
     13  * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
     16  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DAVID
     17  * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
     19  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     22  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
     24  * OF SUCH DAMAGE.
     25  */
     26 
     27 #ifndef ND_CPACK_H
     28 #define ND_CPACK_H
     29 
     30 #include "netdissect.h"
     31 
     32 struct cpack_state {
     33 	const uint8_t					*c_buf;
     34 	const uint8_t					*c_next;
     35 	size_t						 c_len;
     36 };
     37 
     38 int nd_cpack_init(struct cpack_state *, const uint8_t *, size_t);
     39 
     40 int nd_cpack_uint8(netdissect_options *, struct cpack_state *, uint8_t *);
     41 int nd_cpack_int8(netdissect_options *, struct cpack_state *, int8_t *);
     42 int nd_cpack_uint16(netdissect_options *, struct cpack_state *, uint16_t *);
     43 int nd_cpack_int16(netdissect_options *, struct cpack_state *, int16_t *);
     44 int nd_cpack_uint32(netdissect_options *, struct cpack_state *, uint32_t *);
     45 int nd_cpack_int32(netdissect_options *, struct cpack_state *, int32_t *);
     46 int nd_cpack_uint64(netdissect_options *, struct cpack_state *, uint64_t *);
     47 int nd_cpack_int64(netdissect_options *, struct cpack_state *, int64_t *);
     48 
     49 const uint8_t *nd_cpack_next_boundary(const uint8_t *buf, const uint8_t *p, size_t alignment);
     50 const uint8_t *nd_cpack_align_and_reserve(struct cpack_state *cs, size_t wordsize);
     51 
     52 extern int nd_cpack_advance(struct cpack_state *, const size_t);
     53 
     54 #endif /* ND_CPACK_H */
     55