220 lines
4.0 KiB
C
220 lines
4.0 KiB
C
/**
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* @file definitions.h
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*
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* @brief general purpose definitions and macros
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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* Copyright (C) 1998, 1999 D. Hugh Redelmeier. (Endian stuff)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef DEFINITIONS_H_
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#define DEFINITIONS_H_
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/* stolen from strongswan */
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#if linux
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# if defined(i386) && !defined(__i386__)
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# define __i386__ 1
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# define MYHACKFORTHIS 1
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# endif
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# include <endian.h>
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# ifdef MYHACKFORTHIS
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# undef __i386__
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# undef MYHACKFORTHIS
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# endif
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#elif !(defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN) && defined(BYTE_ORDER))
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/* we don't know how to do this, so we require the macros to be defined
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* with compiler flags:
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* -DBIG_ENDIAN=4321 -DLITTLE_ENDIAN=1234 -DBYTE_ORDER=BIG_ENDIAN
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* or -DBIG_ENDIAN=4321 -DLITTLE_ENDIAN=1234 -DBYTE_ORDER=LITTLE_ENDIAN
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* Thse match the GNU definitions
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*/
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# include <sys/endian.h>
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#endif
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#ifndef BIG_ENDIAN
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#error "BIG_ENDIAN must be defined"
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#endif
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#ifndef LITTLE_ENDIAN
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#error "LITTLE_ENDIAN must be defined"
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#endif
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#ifndef BYTE_ORDER
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#error "BYTE_ORDER must be defined"
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#endif
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/**
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* @addtogroup config
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*
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* Configuration stuff.
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*/
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/**
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* @addtogroup encoding
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*
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* Classes used to encode and decode IKEv2 Messages.
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*/
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/**
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* @addtogroup payloads
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*
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* Classes representing a specific IKEv2 Payload type.
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*
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* @ingroup encoding
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*/
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/**
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* @addtogroup transforms
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*
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* Transform algorithms of different kind.
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*/
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/**
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* @addtogroup prfs
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*
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* Pseudo random functions, generate a lot of pseudo
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* randomness using random numbers.
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*
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* @ingroup transforms
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*/
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/**
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* @addtogroup signers
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*
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* Symmetric signing algorithms, used to ensure
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* message integrity.
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*
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* @ingroup transforms
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*/
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/**
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* @addtogroup crypters
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*
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* Symmetric encryption algorithms, used to en-
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* and decrypt.
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*
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* @ingroup transforms
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*/
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/**
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* @addtogroup hashers
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*
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* Hashing algorithms.
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*
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* Example for using hasher_t:
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* @code
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* chunk_t data;
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* chunk_t md5_hash;
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* u_int8_t sha1_hash[20];
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*
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* hasher_t *hasher;
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*
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* data.ptr = "string to hash";
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* data.len = strlen(data.ptr);
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*
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* // use MD5, allocate hash
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* hasher = hasher_create(HASH_MD5);
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* hasher->allocate_hash(hasher, data, &hash);
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* hasher->destroy(hasher);
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*
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* // use SHA1, hash in buffer
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* hasher = hasher_create(HASH_SHA1);
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* hasher->get_hash(hasher, data, &sha1_hash);
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* hasher->destroy(hasher);
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* @endcode
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*
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*
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*
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* @ingroup transforms
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*/
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/**
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* @addtogroup utils
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*
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* Generic helper classes.
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*/
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/**
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* @addtogroup threads
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*
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* Threaded classes, which will do their
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* job alone.
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*/
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/**
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* macro gives back larger of two values
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*/
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#define max(x,y) (x > y ? x : y)
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/**
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* macro gives back smaller of two values
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*/
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#define min(x,y) (x < y ? x : y)
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/**
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* mapping entry which defines the end of a mapping_t array
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*/
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#define MAPPING_END (-1)
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typedef struct mapping_t mapping_t;
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/**
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* @brief mapping entry, where enum-to-string mappings are stored.
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*/
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struct mapping_t
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{
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/**
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* enumeration value
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*/
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int value;
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/**
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* mapped string
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*/
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char *string;
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};
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/**
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* @brief find a mapping_string in the mapping[]
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*
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* @param mappings mappings array
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* @param value enum-value to get the string from
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*
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*/
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char *mapping_find(mapping_t *mappings, int value);
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/**
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* Default random device used when no device is given.
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*/
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#define DEFAULT_RANDOM_DEVICE "/dev/random"
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/**
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* Pseudo random device used when no device is given.
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*/
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#define DEFAULT_PSEUDO_RANDOM_DEVICE "/dev/urandom"
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#endif /*DEFINITIONS_H_*/
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