mirror of
https://github.com/obgm/libcoap.git
synced 2026-11-08 18:32:53 +03:00
Jon Shallow
bb38e995bc
examples/client.c: examples/coap-rd.c: examples/coap-server.c: include/coap2/block.h: include/coap2/coap_hashkey.h: src/block.c: src/coap_debug.c: src/coap_hashkey.c: src/coap_io.c: src/coap_openssl.c: src/net.c: Fix C4267 windows compilation warnings when using Visual Studio where size_t variable parameters are being converted in both size and sign. There still are some C4116 warnings to fix.
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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* coap_hashkey.h -- definition of hash key type and helper functions
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*
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* Copyright (C) 2010-2011 Olaf Bergmann <bergmann@tzi.org>
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*
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* This file is part of the CoAP library libcoap. Please see README for terms
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* of use.
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*/
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/**
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* @file coap_hashkey.h
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* @brief definition of hash key type and helper functions
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*/
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#ifndef COAP_HASHKEY_H_
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#define COAP_HASHKEY_H_
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#include "libcoap.h"
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#include "uthash.h"
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#include "str.h"
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typedef unsigned char coap_key_t[4];
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#ifndef coap_hash
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/**
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* Calculates a fast hash over the given string @p s of length @p len and stores
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* the result into @p h. Depending on the exact implementation, this function
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* cannot be used as one-way function to check message integrity or simlar.
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*
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* @param s The string used for hash calculation.
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* @param len The length of @p s.
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* @param h The result buffer to store the calculated hash key.
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*/
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void coap_hash_impl(const unsigned char *s, size_t len, coap_key_t h);
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#define coap_hash(String,Length,Result) \
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coap_hash_impl((String),(Length),(Result))
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/* This is used to control the pre-set hash-keys for resources. */
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#define COAP_DEFAULT_HASH
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#else
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#undef COAP_DEFAULT_HASH
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#endif /* coap_hash */
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/**
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* Calls coap_hash() with given @c coap_string_t object as parameter.
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*
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* @param Str Must contain a pointer to a coap string object.
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* @param H A coap_key_t object to store the result.
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*
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* @hideinitializer
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*/
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#define coap_str_hash(Str,H) { \
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assert(Str); \
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memset((H), 0, sizeof(coap_key_t)); \
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coap_hash((Str)->s, (Str)->length, (H)); \
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}
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#endif /* COAP_HASHKEY_H_ */
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