482 lines
13 KiB
C
482 lines
13 KiB
C
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/*
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* wpa_supplicant/hostapd / common helper functions, etc.
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* Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#ifndef COMMON_H
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#define COMMON_H
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#include "os.h"
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#if defined(__XTENSA__)
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#include <machine/endian.h>
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#define __BYTE_ORDER BYTE_ORDER
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#define __LITTLE_ENDIAN LITTLE_ENDIAN
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#define __BIG_ENDIAN BIG_ENDIAN
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#endif /*__XTENSA__*/
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#if defined(__linux__) || defined(__GLIBC__)
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#include <endian.h>
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#include <byteswap.h>
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#endif /* __linux__ */
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#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \
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defined(__OpenBSD__)
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#include <sys/types.h>
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#include <sys/endian.h>
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#define __BYTE_ORDER _BYTE_ORDER
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#define __LITTLE_ENDIAN _LITTLE_ENDIAN
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#define __BIG_ENDIAN _BIG_ENDIAN
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#ifdef __OpenBSD__
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#define bswap_16 swap16
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#define bswap_32 swap32
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#define bswap_64 swap64
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#else /* __OpenBSD__ */
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#define bswap_16 bswap16
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#define bswap_32 bswap32
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#define bswap_64 bswap64
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#endif /* __OpenBSD__ */
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#endif /* defined(__FreeBSD__) || defined(__NetBSD__) ||
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* defined(__DragonFly__) || defined(__OpenBSD__) */
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#ifdef __APPLE__
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#include <sys/types.h>
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#include <machine/endian.h>
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#define __BYTE_ORDER _BYTE_ORDER
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#define __LITTLE_ENDIAN _LITTLE_ENDIAN
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#define __BIG_ENDIAN _BIG_ENDIAN
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static inline unsigned short bswap_16(unsigned short v)
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{
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return ((v & 0xff) << 8) | (v >> 8);
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}
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static inline unsigned int bswap_32(unsigned int v)
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{
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return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
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((v & 0xff0000) >> 8) | (v >> 24);
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}
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#endif /* __APPLE__ */
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#ifdef CONFIG_TI_COMPILER
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#define __BIG_ENDIAN 4321
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#define __LITTLE_ENDIAN 1234
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#ifdef __big_endian__
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#define __BYTE_ORDER __BIG_ENDIAN
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#else
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#define __BYTE_ORDER __LITTLE_ENDIAN
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#endif
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#endif /* CONFIG_TI_COMPILER */
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#ifdef __SYMBIAN32__
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#define __BIG_ENDIAN 4321
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#define __LITTLE_ENDIAN 1234
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#define __BYTE_ORDER __LITTLE_ENDIAN
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#endif /* __SYMBIAN32__ */
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#ifdef CONFIG_NATIVE_WINDOWS
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#include <winsock.h>
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typedef int socklen_t;
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#ifndef MSG_DONTWAIT
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#define MSG_DONTWAIT 0 /* not supported */
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#endif
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#endif /* CONFIG_NATIVE_WINDOWS */
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#ifdef _MSC_VER
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#define inline __inline
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#undef vsnprintf
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#define vsnprintf _vsnprintf
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#undef close
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#define close closesocket
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#endif /* _MSC_VER */
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/* Define platform specific integer types */
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#ifdef _MSC_VER
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typedef UINT64 u64;
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typedef UINT32 u32;
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typedef UINT16 u16;
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typedef UINT8 u8;
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typedef INT64 s64;
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typedef INT32 s32;
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typedef INT16 s16;
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typedef INT8 s8;
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#define WPA_TYPES_DEFINED
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#endif /* _MSC_VER */
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#ifdef __vxworks
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typedef unsigned long long u64;
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typedef UINT32 u32;
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typedef UINT16 u16;
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typedef UINT8 u8;
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typedef long long s64;
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typedef INT32 s32;
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typedef INT16 s16;
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typedef INT8 s8;
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#define WPA_TYPES_DEFINED
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#endif /* __vxworks */
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#ifdef CONFIG_TI_COMPILER
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#ifdef _LLONG_AVAILABLE
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typedef unsigned long long u64;
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#else
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/*
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* TODO: 64-bit variable not available. Using long as a workaround to test the
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* build, but this will likely not work for all operations.
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*/
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typedef unsigned long u64;
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#endif
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typedef unsigned int u32;
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typedef unsigned short u16;
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typedef unsigned char u8;
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#define WPA_TYPES_DEFINED
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#endif /* CONFIG_TI_COMPILER */
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#ifdef __SYMBIAN32__
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#define __REMOVE_PLATSEC_DIAGNOSTICS__
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#include <e32def.h>
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typedef TUint64 u64;
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typedef TUint32 u32;
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typedef TUint16 u16;
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typedef TUint8 u8;
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#define WPA_TYPES_DEFINED
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#endif /* __SYMBIAN32__ */
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#ifndef WPA_TYPES_DEFINED
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#ifdef CONFIG_USE_INTTYPES_H
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#include <inttypes.h>
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#else
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#include <stdint.h>
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#endif
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typedef uint64_t u64;
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typedef uint32_t u32;
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typedef uint16_t u16;
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typedef uint8_t u8;
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typedef int64_t s64;
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typedef int32_t s32;
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typedef int16_t s16;
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typedef int8_t s8;
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#define WPA_TYPES_DEFINED
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#endif /* !WPA_TYPES_DEFINED */
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/* Define platform specific byte swapping macros */
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#if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS)
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static inline unsigned short wpa_swap_16(unsigned short v)
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{
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return ((v & 0xff) << 8) | (v >> 8);
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}
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static inline unsigned int wpa_swap_32(unsigned int v)
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{
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return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
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((v & 0xff0000) >> 8) | (v >> 24);
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}
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#define le_to_host16(n) (n)
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#define host_to_le16(n) (n)
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#define be_to_host16(n) wpa_swap_16(n)
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#define host_to_be16(n) wpa_swap_16(n)
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#define le_to_host32(n) (n)
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#define be_to_host32(n) wpa_swap_32(n)
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#define host_to_be32(n) wpa_swap_32(n)
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#define WPA_BYTE_SWAP_DEFINED
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#endif /* __CYGWIN__ || CONFIG_NATIVE_WINDOWS */
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#ifndef WPA_BYTE_SWAP_DEFINED
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#ifndef __BYTE_ORDER
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#ifndef __LITTLE_ENDIAN
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#ifndef __BIG_ENDIAN
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#define __LITTLE_ENDIAN 1234
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#define __BIG_ENDIAN 4321
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#if defined(sparc)
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#define __BYTE_ORDER __BIG_ENDIAN
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#endif
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#endif /* __BIG_ENDIAN */
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#endif /* __LITTLE_ENDIAN */
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#endif /* __BYTE_ORDER */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define le_to_host16(n) ((__force u16) (le16) (n))
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#define host_to_le16(n) ((__force le16) (u16) (n))
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#define be_to_host16(n) bswap_16((__force u16) (be16) (n))
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#define host_to_be16(n) ((__force be16) bswap_16((n)))
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#define le_to_host32(n) ((__force u32) (le32) (n))
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#define host_to_le32(n) ((__force le32) (u32) (n))
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#define be_to_host32(n) bswap_32((__force u32) (be32) (n))
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#define host_to_be32(n) ((__force be32) bswap_32((n)))
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#define le_to_host64(n) ((__force u64) (le64) (n))
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#define host_to_le64(n) ((__force le64) (u64) (n))
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#define be_to_host64(n) bswap_64((__force u64) (be64) (n))
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#define host_to_be64(n) ((__force be64) bswap_64((n)))
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#define le_to_host16(n) bswap_16(n)
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#define host_to_le16(n) bswap_16(n)
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#define be_to_host16(n) (n)
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#define host_to_be16(n) (n)
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#define le_to_host32(n) bswap_32(n)
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#define be_to_host32(n) (n)
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#define host_to_be32(n) (n)
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#define le_to_host64(n) bswap_64(n)
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#define host_to_le64(n) bswap_64(n)
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#define be_to_host64(n) (n)
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#define host_to_be64(n) (n)
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#ifndef WORDS_BIGENDIAN
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#define WORDS_BIGENDIAN
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#endif
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#else
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#error Could not determine CPU byte order
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#endif
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#define WPA_BYTE_SWAP_DEFINED
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#endif /* !WPA_BYTE_SWAP_DEFINED */
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/* Macros for handling unaligned memory accesses */
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#define WPA_GET_BE16(a) ((u16) (((a)[0] << 8) | (a)[1]))
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#define WPA_PUT_BE16(a, val) \
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do { \
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(a)[0] = ((u16) (val)) >> 8; \
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(a)[1] = ((u16) (val)) & 0xff; \
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} while (0)
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#define WPA_GET_LE16(a) ((u16) (((a)[1] << 8) | (a)[0]))
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#define WPA_PUT_LE16(a, val) \
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do { \
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(a)[1] = ((u16) (val)) >> 8; \
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(a)[0] = ((u16) (val)) & 0xff; \
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} while (0)
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#define WPA_GET_BE24(a) ((((u32) (a)[0]) << 16) | (((u32) (a)[1]) << 8) | \
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((u32) (a)[2]))
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#define WPA_PUT_BE24(a, val) \
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do { \
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(a)[0] = (u8) ((((u32) (val)) >> 16) & 0xff); \
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(a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff); \
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(a)[2] = (u8) (((u32) (val)) & 0xff); \
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} while (0)
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#define WPA_GET_BE32(a) ((((u32) (a)[0]) << 24) | (((u32) (a)[1]) << 16) | \
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(((u32) (a)[2]) << 8) | ((u32) (a)[3]))
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#define WPA_PUT_BE32(a, val) \
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do { \
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(a)[0] = (u8) ((((u32) (val)) >> 24) & 0xff); \
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(a)[1] = (u8) ((((u32) (val)) >> 16) & 0xff); \
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(a)[2] = (u8) ((((u32) (val)) >> 8) & 0xff); \
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(a)[3] = (u8) (((u32) (val)) & 0xff); \
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} while (0)
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#define WPA_GET_LE32(a) ((((u32) (a)[3]) << 24) | (((u32) (a)[2]) << 16) | \
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(((u32) (a)[1]) << 8) | ((u32) (a)[0]))
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#define WPA_PUT_LE32(a, val) \
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do { \
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(a)[3] = (u8) ((((u32) (val)) >> 24) & 0xff); \
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(a)[2] = (u8) ((((u32) (val)) >> 16) & 0xff); \
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(a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff); \
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(a)[0] = (u8) (((u32) (val)) & 0xff); \
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} while (0)
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#define WPA_GET_BE64(a) ((((u64) (a)[0]) << 56) | (((u64) (a)[1]) << 48) | \
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(((u64) (a)[2]) << 40) | (((u64) (a)[3]) << 32) | \
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(((u64) (a)[4]) << 24) | (((u64) (a)[5]) << 16) | \
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(((u64) (a)[6]) << 8) | ((u64) (a)[7]))
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#define WPA_PUT_BE64(a, val) \
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do { \
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(a)[0] = (u8) (((u64) (val)) >> 56); \
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(a)[1] = (u8) (((u64) (val)) >> 48); \
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(a)[2] = (u8) (((u64) (val)) >> 40); \
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(a)[3] = (u8) (((u64) (val)) >> 32); \
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(a)[4] = (u8) (((u64) (val)) >> 24); \
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(a)[5] = (u8) (((u64) (val)) >> 16); \
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(a)[6] = (u8) (((u64) (val)) >> 8); \
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(a)[7] = (u8) (((u64) (val)) & 0xff); \
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} while (0)
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#define WPA_GET_LE64(a) ((((u64) (a)[7]) << 56) | (((u64) (a)[6]) << 48) | \
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(((u64) (a)[5]) << 40) | (((u64) (a)[4]) << 32) | \
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(((u64) (a)[3]) << 24) | (((u64) (a)[2]) << 16) | \
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(((u64) (a)[1]) << 8) | ((u64) (a)[0]))
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#ifndef ETH_ALEN
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#define ETH_ALEN 6
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#endif
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#ifndef IFNAMSIZ
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#define IFNAMSIZ 16
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#endif
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#ifndef ETH_P_ALL
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#define ETH_P_ALL 0x0003
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#endif
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#ifndef ETH_P_PAE
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#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
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#endif /* ETH_P_PAE */
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#ifndef ETH_P_EAPOL
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#define ETH_P_EAPOL ETH_P_PAE
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#endif /* ETH_P_EAPOL */
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#ifndef ETH_P_RSN_PREAUTH
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#define ETH_P_RSN_PREAUTH 0x88c7
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#endif /* ETH_P_RSN_PREAUTH */
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#ifndef ETH_P_RRB
|
||
|
|
#define ETH_P_RRB 0x890D
|
||
|
|
#endif /* ETH_P_RRB */
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __GNUC__
|
||
|
|
#define PRINTF_FORMAT(a,b) __attribute__ ((format (printf, (a), (b))))
|
||
|
|
#define STRUCT_PACKED __attribute__ ((packed))
|
||
|
|
#else
|
||
|
|
#define PRINTF_FORMAT(a,b)
|
||
|
|
#define STRUCT_PACKED
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_ANSI_C_EXTRA
|
||
|
|
|
||
|
|
#if !defined(_MSC_VER) || _MSC_VER < 1400
|
||
|
|
/* snprintf - used in number of places; sprintf() is _not_ a good replacement
|
||
|
|
* due to possible buffer overflow; see, e.g.,
|
||
|
|
* http://www.ijs.si/software/snprintf/ for portable implementation of
|
||
|
|
* snprintf. */
|
||
|
|
int snprintf(char *str, size_t size, const char *format, ...);
|
||
|
|
|
||
|
|
/* vsnprintf - only used for wpa_msg() in wpa_supplicant.c */
|
||
|
|
int vsnprintf(char *str, size_t size, const char *format, va_list ap);
|
||
|
|
#endif /* !defined(_MSC_VER) || _MSC_VER < 1400 */
|
||
|
|
|
||
|
|
/* getopt - only used in main.c */
|
||
|
|
int getopt(int argc, char *const argv[], const char *optstring);
|
||
|
|
extern char *optarg;
|
||
|
|
extern int optind;
|
||
|
|
|
||
|
|
#ifndef CONFIG_NO_SOCKLEN_T_TYPEDEF
|
||
|
|
#ifndef __socklen_t_defined
|
||
|
|
typedef int socklen_t;
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* inline - define as __inline or just define it to be empty, if needed */
|
||
|
|
#ifdef CONFIG_NO_INLINE
|
||
|
|
#define inline
|
||
|
|
#else
|
||
|
|
#define inline __inline
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef __func__
|
||
|
|
#define __func__ "__func__ not defined"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef bswap_16
|
||
|
|
#define bswap_16(a) ((((u16) (a) << 8) & 0xff00) | (((u16) (a) >> 8) & 0xff))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef bswap_32
|
||
|
|
#define bswap_32(a) ((((u32) (a) << 24) & 0xff000000) | \
|
||
|
|
(((u32) (a) << 8) & 0xff0000) | \
|
||
|
|
(((u32) (a) >> 8) & 0xff00) | \
|
||
|
|
(((u32) (a) >> 24) & 0xff))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef MSG_DONTWAIT
|
||
|
|
#define MSG_DONTWAIT 0
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef _WIN32_WCE
|
||
|
|
void perror(const char *s);
|
||
|
|
#endif /* _WIN32_WCE */
|
||
|
|
|
||
|
|
#endif /* CONFIG_ANSI_C_EXTRA */
|
||
|
|
|
||
|
|
#ifndef MAC2STR
|
||
|
|
#define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
|
||
|
|
#define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef BIT
|
||
|
|
#define BIT(x) (1 << (x))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Definitions for sparse validation
|
||
|
|
* (http://kernel.org/pub/linux/kernel/people/josh/sparse/)
|
||
|
|
*/
|
||
|
|
#ifdef __CHECKER__
|
||
|
|
#define __force __attribute__((force))
|
||
|
|
#define __bitwise __attribute__((bitwise))
|
||
|
|
#else
|
||
|
|
#define __force
|
||
|
|
#define __bitwise
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef u16 __bitwise be16;
|
||
|
|
typedef u16 __bitwise le16;
|
||
|
|
typedef u32 __bitwise be32;
|
||
|
|
typedef u32 __bitwise le32;
|
||
|
|
typedef u64 __bitwise be64;
|
||
|
|
typedef u64 __bitwise le64;
|
||
|
|
|
||
|
|
#ifndef __must_check
|
||
|
|
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
|
||
|
|
#define __must_check __attribute__((__warn_unused_result__))
|
||
|
|
#else
|
||
|
|
#define __must_check
|
||
|
|
#endif /* __GNUC__ */
|
||
|
|
#endif /* __must_check */
|
||
|
|
|
||
|
|
int hwaddr_aton(const char *txt, u8 *addr);
|
||
|
|
int hwaddr_aton2(const char *txt, u8 *addr);
|
||
|
|
int hexstr2bin(const char *hex, u8 *buf, size_t len);
|
||
|
|
void inc_byte_array(u8 *counter, size_t len);
|
||
|
|
void wpa_get_ntp_timestamp(u8 *buf);
|
||
|
|
int wpa_snprintf_hex(char *buf, size_t buf_size, const u8 *data, size_t len);
|
||
|
|
int wpa_snprintf_hex_uppercase(char *buf, size_t buf_size, const u8 *data,
|
||
|
|
size_t len);
|
||
|
|
|
||
|
|
#ifdef CONFIG_NATIVE_WINDOWS
|
||
|
|
void wpa_unicode2ascii_inplace(TCHAR *str);
|
||
|
|
TCHAR * wpa_strdup_tchar(const char *str);
|
||
|
|
#else /* CONFIG_NATIVE_WINDOWS */
|
||
|
|
#define wpa_unicode2ascii_inplace(s) do { } while (0)
|
||
|
|
#define wpa_strdup_tchar(s) strdup((s))
|
||
|
|
#endif /* CONFIG_NATIVE_WINDOWS */
|
||
|
|
|
||
|
|
const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len);
|
||
|
|
|
||
|
|
static inline int is_zero_ether_addr(const u8 *a)
|
||
|
|
{
|
||
|
|
return !(a[0] | a[1] | a[2] | a[3] | a[4] | a[5]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* gcc 4.4 ends up generating strict-aliasing warnings about some very common
|
||
|
|
* networking socket uses that do not really result in a real problem and
|
||
|
|
* cannot be easily avoided with union-based type-punning due to struct
|
||
|
|
* definitions including another struct in system header files. To avoid having
|
||
|
|
* to fully disable strict-aliasing warnings, provide a mechanism to hide the
|
||
|
|
* typecast from aliasing for now. A cleaner solution will hopefully be found
|
||
|
|
* in the future to handle these cases.
|
||
|
|
*/
|
||
|
|
void * __hide_aliasing_typecast(void *foo);
|
||
|
|
#define aliasing_hide_typecast(a,t) (t *) __hide_aliasing_typecast((a))
|
||
|
|
|
||
|
|
#endif /* COMMON_H */
|