/usr/include/coap/encode.h is in libcoap-1-0-dev 4.1.2-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | /*
* encode.h -- encoding and decoding of CoAP data types
*
* Copyright (C) 2010-2012 Olaf Bergmann <bergmann@tzi.org>
*
* This file is part of the CoAP library libcoap. Please see README for terms
* of use.
*/
#ifndef _COAP_ENCODE_H_
#define _COAP_ENCODE_H_
#if (BSD >= 199103) || defined(WITH_CONTIKI)
# include <string.h>
#else
# include <strings.h>
#endif
#define Nn 8 /* duplicate definition of N if built on sky motes */
#define ENCODE_HEADER_SIZE 4
#define HIBIT (1 << (Nn - 1))
#define EMASK ((1 << ENCODE_HEADER_SIZE) - 1)
#define MMASK ((1 << Nn) - 1 - EMASK)
#define MAX_VALUE ( (1 << Nn) - (1 << ENCODE_HEADER_SIZE) ) * (1 << ((1 << ENCODE_HEADER_SIZE) - 1))
#define COAP_PSEUDOFP_DECODE_8_4(r) (r < HIBIT ? r : (r & MMASK) << (r & EMASK))
#ifndef HAVE_FLS
/* include this only if fls() is not available */
extern int coap_fls(unsigned int i);
#else
#define coap_fls(i) fls(i)
#endif
/* ls and s must be integer variables */
#define COAP_PSEUDOFP_ENCODE_8_4_DOWN(v,ls) (v < HIBIT ? v : (ls = coap_fls(v) - Nn, (v >> ls) & MMASK) + ls)
#define COAP_PSEUDOFP_ENCODE_8_4_UP(v,ls,s) (v < HIBIT ? v : (ls = coap_fls(v) - Nn, (s = (((v + ((1<<ENCODE_HEADER_SIZE<<ls)-1)) >> ls) & MMASK)), s == 0 ? HIBIT + ls + 1 : s + ls))
/**
* Decodes multiple-length byte sequences. buf points to an input byte sequence
* of length len. Returns the decoded value.
*/
unsigned int coap_decode_var_bytes(unsigned char *buf,unsigned int len);
/**
* Encodes multiple-length byte sequences. buf points to an output buffer of
* sufficient length to store the encoded bytes. val is the value to encode.
* Returns the number of bytes used to encode val or 0 on error.
*/
unsigned int coap_encode_var_bytes(unsigned char *buf, unsigned int val);
#endif /* _COAP_ENCODE_H_ */
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