src/utils/common.h - platform/external/wpa_supplicant_8 - Git at Google

 /*
  * wpa_supplicant/hostapd / common helper functions, etc.
  * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
  *
  * This software may be distributed under the terms of the BSD license.
  * See README for more details.
  */

 #ifndef COMMON_H
 #define COMMON_H

 #include "os.h"

 #if defined(__linux__) || defined(__GLIBC__)
 #include <endian.h>
 #include <byteswap.h>
 #endif /* __linux__ */

 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \
     defined(__OpenBSD__)
 #include <sys/types.h>
 #include <sys/endian.h>
 #define __BYTE_ORDER	_BYTE_ORDER
 #define	__LITTLE_ENDIAN	_LITTLE_ENDIAN
 #define	__BIG_ENDIAN	_BIG_ENDIAN
 #ifdef __OpenBSD__
 #define bswap_16 swap16
 #define bswap_32 swap32
 #define bswap_64 swap64
 #else /* __OpenBSD__ */
 #define bswap_16 bswap16
 #define bswap_32 bswap32
 #define bswap_64 bswap64
 #endif /* __OpenBSD__ */
 #endif /* defined(__FreeBSD__) || defined(__NetBSD__) ||
 	* defined(__DragonFly__) || defined(__OpenBSD__) */

 #ifdef __APPLE__
 #include <sys/types.h>
 #include <machine/endian.h>
 #define __BYTE_ORDER	_BYTE_ORDER
 #define __LITTLE_ENDIAN	_LITTLE_ENDIAN
 #define __BIG_ENDIAN	_BIG_ENDIAN
 static inline unsigned short bswap_16(unsigned short v)
 {
 	return ((v & 0xff) << 8) | (v >> 8);
 }

 static inline unsigned int bswap_32(unsigned int v)
 {
 	return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
 		((v & 0xff0000) >> 8) | (v >> 24);
 }
 #endif /* __APPLE__ */

 #ifdef CONFIG_TI_COMPILER
 #define __BIG_ENDIAN 4321
 #define __LITTLE_ENDIAN 1234
 #ifdef __big_endian__
 #define __BYTE_ORDER __BIG_ENDIAN
 #else
 #define __BYTE_ORDER __LITTLE_ENDIAN
 #endif
 #endif /* CONFIG_TI_COMPILER */

 #ifdef CONFIG_NATIVE_WINDOWS
 #include <winsock.h>

 typedef int socklen_t;

 #ifndef MSG_DONTWAIT
 #define MSG_DONTWAIT 0 /* not supported */
 #endif

 #endif /* CONFIG_NATIVE_WINDOWS */

 #ifdef _MSC_VER
 #define inline __inline

 #undef vsnprintf
 #define vsnprintf _vsnprintf
 #undef close
 #define close closesocket
 #endif /* _MSC_VER */


 /* Define platform specific integer types */

 #ifdef _MSC_VER
 typedef UINT64 u64;
 typedef UINT32 u32;
 typedef UINT16 u16;
 typedef UINT8 u8;
 typedef INT64 s64;
 typedef INT32 s32;
 typedef INT16 s16;
 typedef INT8 s8;
 #define WPA_TYPES_DEFINED
 #endif /* _MSC_VER */

 #ifdef __vxworks
 typedef unsigned long long u64;
 typedef UINT32 u32;
 typedef UINT16 u16;
 typedef UINT8 u8;
 typedef long long s64;
 typedef INT32 s32;
 typedef INT16 s16;
 typedef INT8 s8;
 #define WPA_TYPES_DEFINED
 #endif /* __vxworks */

 #ifdef CONFIG_TI_COMPILER
 #ifdef _LLONG_AVAILABLE
 typedef unsigned long long u64;
 #else
 /*
  * TODO: 64-bit variable not available. Using long as a workaround to test the
  * build, but this will likely not work for all operations.
  */
 typedef unsigned long u64;
 #endif
 typedef unsigned int u32;
 typedef unsigned short u16;
 typedef unsigned char u8;
 #define WPA_TYPES_DEFINED
 #endif /* CONFIG_TI_COMPILER */

 #ifndef WPA_TYPES_DEFINED
 #ifdef CONFIG_USE_INTTYPES_H
 #include <inttypes.h>
 #else
 #include <stdint.h>
 #endif
 typedef uint64_t u64;
 typedef uint32_t u32;
 typedef uint16_t u16;
 typedef uint8_t u8;
 typedef int64_t s64;
 typedef int32_t s32;
 typedef int16_t s16;
 typedef int8_t s8;
 #define WPA_TYPES_DEFINED
 #endif /* !WPA_TYPES_DEFINED */


 /* Define platform specific byte swapping macros */

 #if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS)

 static inline unsigned short wpa_swap_16(unsigned short v)
 {
 	return ((v & 0xff) << 8) | (v >> 8);
 }

 static inline unsigned int wpa_swap_32(unsigned int v)
 {
 	return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
 		((v & 0xff0000) >> 8) | (v >> 24);
 }

 #define le_to_host16(n) (n)
 #define host_to_le16(n) (n)
 #define be_to_host16(n) wpa_swap_16(n)
 #define host_to_be16(n) wpa_swap_16(n)
 #define le_to_host32(n) (n)
 #define be_to_host32(n) wpa_swap_32(n)
 #define host_to_be32(n) wpa_swap_32(n)

 #define WPA_BYTE_SWAP_DEFINED

 #endif /* __CYGWIN__ || CONFIG_NATIVE_WINDOWS */


 #ifndef WPA_BYTE_SWAP_DEFINED

 #ifndef __BYTE_ORDER
 #ifndef __LITTLE_ENDIAN
 #ifndef __BIG_ENDIAN
 #define __LITTLE_ENDIAN 1234
 #define __BIG_ENDIAN 4321
 #if defined(sparc)
 #define __BYTE_ORDER __BIG_ENDIAN
 #endif
 #endif /* __BIG_ENDIAN */
 #endif /* __LITTLE_ENDIAN */
 #endif /* __BYTE_ORDER */

 #if __BYTE_ORDER == __LITTLE_ENDIAN
 #define le_to_host16(n) ((__force u16) (le16) (n))
 #define host_to_le16(n) ((__force le16) (u16) (n))
 #define be_to_host16(n) bswap_16((__force u16) (be16) (n))
 #define host_to_be16(n) ((__force be16) bswap_16((n)))
 #define le_to_host32(n) ((__force u32) (le32) (n))
 #define host_to_le32(n) ((__force le32) (u32) (n))
 #define be_to_host32(n) bswap_32((__force u32) (be32) (n))
 #define host_to_be32(n) ((__force be32) bswap_32((n)))
 #define le_to_host64(n) ((__force u64) (le64) (n))
 #define host_to_le64(n) ((__force le64) (u64) (n))
 #define be_to_host64(n) bswap_64((__force u64) (be64) (n))
 #define host_to_be64(n) ((__force be64) bswap_64((n)))
 #elif __BYTE_ORDER == __BIG_ENDIAN
 #define le_to_host16(n) bswap_16(n)
 #define host_to_le16(n) bswap_16(n)
 #define be_to_host16(n) (n)
 #define host_to_be16(n) (n)
 #define le_to_host32(n) bswap_32(n)
 #define be_to_host32(n) (n)
 #define host_to_be32(n) (n)
 #define le_to_host64(n) bswap_64(n)
 #define host_to_le64(n) bswap_64(n)
 #define be_to_host64(n) (n)
 #define host_to_be64(n) (n)
 #ifndef WORDS_BIGENDIAN
 #define WORDS_BIGENDIAN
 #endif
 #else
 #error Could not determine CPU byte order
 #endif

 #define WPA_BYTE_SWAP_DEFINED
 #endif /* !WPA_BYTE_SWAP_DEFINED */


 /* Macros for handling unaligned memory accesses */

 #define WPA_GET_BE16(a) ((u16) (((a)[0] << 8) | (a)[1]))
 #define WPA_PUT_BE16(a, val)			\
 	do {					\
 		(a)[0] = ((u16) (val)) >> 8;	\
 		(a)[1] = ((u16) (val)) & 0xff;	\
 	} while (0)

 #define WPA_GET_LE16(a) ((u16) (((a)[1] << 8) | (a)[0]))
 #define WPA_PUT_LE16(a, val)			\
 	do {					\
 		(a)[1] = ((u16) (val)) >> 8;	\
 		(a)[0] = ((u16) (val)) & 0xff;	\
 	} while (0)

 #define WPA_GET_BE24(a) ((((u32) (a)[0]) << 16) | (((u32) (a)[1]) << 8) | \
 			 ((u32) (a)[2]))
 #define WPA_PUT_BE24(a, val)					\
 	do {							\
 		(a)[0] = (u8) ((((u32) (val)) >> 16) & 0xff);	\
 		(a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff);	\
 		(a)[2] = (u8) (((u32) (val)) & 0xff);		\
 	} while (0)

 #define WPA_GET_BE32(a) ((((u32) (a)[0]) << 24) | (((u32) (a)[1]) << 16) | \
 			 (((u32) (a)[2]) << 8) | ((u32) (a)[3]))
 #define WPA_PUT_BE32(a, val)					\
 	do {							\
 		(a)[0] = (u8) ((((u32) (val)) >> 24) & 0xff);	\
 		(a)[1] = (u8) ((((u32) (val)) >> 16) & 0xff);	\
 		(a)[2] = (u8) ((((u32) (val)) >> 8) & 0xff);	\
 		(a)[3] = (u8) (((u32) (val)) & 0xff);		\
 	} while (0)

 #define WPA_GET_LE32(a) ((((u32) (a)[3]) << 24) | (((u32) (a)[2]) << 16) | \
 			 (((u32) (a)[1]) << 8) | ((u32) (a)[0]))
 #define WPA_PUT_LE32(a, val)					\
 	do {							\
 		(a)[3] = (u8) ((((u32) (val)) >> 24) & 0xff);	\
 		(a)[2] = (u8) ((((u32) (val)) >> 16) & 0xff);	\
 		(a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff);	\
 		(a)[0] = (u8) (((u32) (val)) & 0xff);		\
 	} while (0)

 #define WPA_GET_BE64(a) ((((u64) (a)[0]) << 56) | (((u64) (a)[1]) << 48) | \
 			 (((u64) (a)[2]) << 40) | (((u64) (a)[3]) << 32) | \
 			 (((u64) (a)[4]) << 24) | (((u64) (a)[5]) << 16) | \
 			 (((u64) (a)[6]) << 8) | ((u64) (a)[7]))
 #define WPA_PUT_BE64(a, val)				\
 	do {						\
 		(a)[0] = (u8) (((u64) (val)) >> 56);	\
 		(a)[1] = (u8) (((u64) (val)) >> 48);	\
 		(a)[2] = (u8) (((u64) (val)) >> 40);	\
 		(a)[3] = (u8) (((u64) (val)) >> 32);	\
 		(a)[4] = (u8) (((u64) (val)) >> 24);	\
 		(a)[5] = (u8) (((u64) (val)) >> 16);	\
 		(a)[6] = (u8) (((u64) (val)) >> 8);	\
 		(a)[7] = (u8) (((u64) (val)) & 0xff);	\
 	} while (0)

 #define WPA_GET_LE64(a) ((((u64) (a)[7]) << 56) | (((u64) (a)[6]) << 48) | \
 			 (((u64) (a)[5]) << 40) | (((u64) (a)[4]) << 32) | \
 			 (((u64) (a)[3]) << 24) | (((u64) (a)[2]) << 16) | \
 			 (((u64) (a)[1]) << 8) | ((u64) (a)[0]))


 #ifndef ETH_ALEN
 #define ETH_ALEN 6
 #endif
 #ifndef IFNAMSIZ
 #define IFNAMSIZ 16
 #endif
 #ifndef ETH_P_ALL
 #define ETH_P_ALL 0x0003
 #endif
 #ifndef ETH_P_80211_ENCAP
 #define ETH_P_80211_ENCAP 0x890d /* TDLS comes under this category */
 #endif
 #ifndef ETH_P_PAE
 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
 #endif /* ETH_P_PAE */
 #ifndef ETH_P_EAPOL
 #define ETH_P_EAPOL ETH_P_PAE
 #endif /* ETH_P_EAPOL */
 #ifndef ETH_P_RSN_PREAUTH
 #define ETH_P_RSN_PREAUTH 0x88c7
 #endif /* ETH_P_RSN_PREAUTH */
 #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"

 /*
  * Compact form for string representation of MAC address
  * To be used, e.g., for constructing dbus paths for P2P Devices
  */
 #define COMPACT_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_compact_aton(const char *txt, u8 *addr);
 int hwaddr_aton2(const char *txt, u8 *addr);
 int hex2byte(const char *hex);
 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 */

 void printf_encode(char *txt, size_t maxlen, const u8 *data, size_t len);
 size_t printf_decode(u8 *buf, size_t maxlen, const char *str);

 const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len);

 char * wpa_config_parse_string(const char *value, size_t *len);
 int is_hex(const u8 *data, size_t len);
 size_t merge_byte_arrays(u8 *res, size_t res_len,
 			 const u8 *src1, size_t src1_len,
 			 const u8 *src2, size_t src2_len);

 static inline int is_zero_ether_addr(const u8 *a)
 {
 	return !(a[0] | a[1] | a[2] | a[3] | a[4] | a[5]);
 }

 static inline int is_broadcast_ether_addr(const u8 *a)
 {
 	return (a[0] & a[1] & a[2] & a[3] & a[4] & a[5]) == 0xff;
 }

 #define broadcast_ether_addr (const u8 *) "\xff\xff\xff\xff\xff\xff"

 #include "wpa_debug.h"


 /*
  * 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))

 #ifdef CONFIG_VALGRIND
 #include <valgrind/memcheck.h>
 #define WPA_MEM_DEFINED(ptr, len) VALGRIND_MAKE_MEM_DEFINED((ptr), (len))
 #else /* CONFIG_VALGRIND */
 #define WPA_MEM_DEFINED(ptr, len) do { } while (0)
 #endif /* CONFIG_VALGRIND */

 #endif /* COMMON_H */
	/*
	* wpa_supplicant/hostapd / common helper functions, etc.
	* Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
	*
	* This software may be distributed under the terms of the BSD license.
	* See README for more details.
	*/

	#ifndef COMMON_H
	#define COMMON_H

	#include "os.h"

	#if defined(__linux__) \|\| defined(__GLIBC__)
	#include <endian.h>
	#include <byteswap.h>
	#endif /* __linux__ */

	#if defined(__FreeBSD__) \|\| defined(__NetBSD__) \|\| defined(__DragonFly__) \|\| \
	defined(__OpenBSD__)
	#include <sys/types.h>
	#include <sys/endian.h>
	#define __BYTE_ORDER _BYTE_ORDER
	#define __LITTLE_ENDIAN _LITTLE_ENDIAN
	#define __BIG_ENDIAN _BIG_ENDIAN
	#ifdef __OpenBSD__
	#define bswap_16 swap16
	#define bswap_32 swap32
	#define bswap_64 swap64
	#else /* __OpenBSD__ */
	#define bswap_16 bswap16
	#define bswap_32 bswap32
	#define bswap_64 bswap64
	#endif /* __OpenBSD__ */
	#endif /* defined(__FreeBSD__) \|\| defined(__NetBSD__) \|\|
	* defined(__DragonFly__) \|\| defined(__OpenBSD__) */

	#ifdef __APPLE__
	#include <sys/types.h>
	#include <machine/endian.h>
	#define __BYTE_ORDER _BYTE_ORDER
	#define __LITTLE_ENDIAN _LITTLE_ENDIAN
	#define __BIG_ENDIAN _BIG_ENDIAN
	static inline unsigned short bswap_16(unsigned short v)
	{
	return ((v & 0xff) << 8) \| (v >> 8);
	}

	static inline unsigned int bswap_32(unsigned int v)
	{
	return ((v & 0xff) << 24) \| ((v & 0xff00) << 8) \|
	((v & 0xff0000) >> 8) \| (v >> 24);
	}
	#endif /* __APPLE__ */

	#ifdef CONFIG_TI_COMPILER
	#define __BIG_ENDIAN 4321
	#define __LITTLE_ENDIAN 1234
	#ifdef __big_endian__
	#define __BYTE_ORDER __BIG_ENDIAN
	#else
	#define __BYTE_ORDER __LITTLE_ENDIAN
	#endif
	#endif /* CONFIG_TI_COMPILER */

	#ifdef CONFIG_NATIVE_WINDOWS
	#include <winsock.h>

	typedef int socklen_t;

	#ifndef MSG_DONTWAIT
	#define MSG_DONTWAIT 0 /* not supported */
	#endif

	#endif /* CONFIG_NATIVE_WINDOWS */

	#ifdef _MSC_VER
	#define inline __inline

	#undef vsnprintf
	#define vsnprintf _vsnprintf
	#undef close
	#define close closesocket
	#endif /* _MSC_VER */


	/* Define platform specific integer types */

	#ifdef _MSC_VER
	typedef UINT64 u64;
	typedef UINT32 u32;
	typedef UINT16 u16;
	typedef UINT8 u8;
	typedef INT64 s64;
	typedef INT32 s32;
	typedef INT16 s16;
	typedef INT8 s8;
	#define WPA_TYPES_DEFINED
	#endif /* _MSC_VER */

	#ifdef __vxworks
	typedef unsigned long long u64;
	typedef UINT32 u32;
	typedef UINT16 u16;
	typedef UINT8 u8;
	typedef long long s64;
	typedef INT32 s32;
	typedef INT16 s16;
	typedef INT8 s8;
	#define WPA_TYPES_DEFINED
	#endif /* __vxworks */

	#ifdef CONFIG_TI_COMPILER
	#ifdef _LLONG_AVAILABLE
	typedef unsigned long long u64;
	#else
	/*
	* TODO: 64-bit variable not available. Using long as a workaround to test the
	* build, but this will likely not work for all operations.
	*/
	typedef unsigned long u64;
	#endif
	typedef unsigned int u32;
	typedef unsigned short u16;
	typedef unsigned char u8;
	#define WPA_TYPES_DEFINED
	#endif /* CONFIG_TI_COMPILER */

	#ifndef WPA_TYPES_DEFINED
	#ifdef CONFIG_USE_INTTYPES_H
	#include <inttypes.h>
	#else
	#include <stdint.h>
	#endif
	typedef uint64_t u64;
	typedef uint32_t u32;
	typedef uint16_t u16;
	typedef uint8_t u8;
	typedef int64_t s64;
	typedef int32_t s32;
	typedef int16_t s16;
	typedef int8_t s8;
	#define WPA_TYPES_DEFINED
	#endif /* !WPA_TYPES_DEFINED */


	/* Define platform specific byte swapping macros */

	#if defined(__CYGWIN__) \|\| defined(CONFIG_NATIVE_WINDOWS)

	static inline unsigned short wpa_swap_16(unsigned short v)
	{
	return ((v & 0xff) << 8) \| (v >> 8);
	}

	static inline unsigned int wpa_swap_32(unsigned int v)
	{
	return ((v & 0xff) << 24) \| ((v & 0xff00) << 8) \|
	((v & 0xff0000) >> 8) \| (v >> 24);
	}

	#define le_to_host16(n) (n)
	#define host_to_le16(n) (n)
	#define be_to_host16(n) wpa_swap_16(n)
	#define host_to_be16(n) wpa_swap_16(n)
	#define le_to_host32(n) (n)
	#define be_to_host32(n) wpa_swap_32(n)
	#define host_to_be32(n) wpa_swap_32(n)

	#define WPA_BYTE_SWAP_DEFINED

	#endif /* __CYGWIN__ \|\| CONFIG_NATIVE_WINDOWS */


	#ifndef WPA_BYTE_SWAP_DEFINED

	#ifndef __BYTE_ORDER
	#ifndef __LITTLE_ENDIAN
	#ifndef __BIG_ENDIAN
	#define __LITTLE_ENDIAN 1234
	#define __BIG_ENDIAN 4321
	#if defined(sparc)
	#define __BYTE_ORDER __BIG_ENDIAN
	#endif
	#endif /* __BIG_ENDIAN */
	#endif /* __LITTLE_ENDIAN */
	#endif /* __BYTE_ORDER */

	#if __BYTE_ORDER == __LITTLE_ENDIAN
	#define le_to_host16(n) ((__force u16) (le16) (n))
	#define host_to_le16(n) ((__force le16) (u16) (n))
	#define be_to_host16(n) bswap_16((__force u16) (be16) (n))
	#define host_to_be16(n) ((__force be16) bswap_16((n)))
	#define le_to_host32(n) ((__force u32) (le32) (n))
	#define host_to_le32(n) ((__force le32) (u32) (n))
	#define be_to_host32(n) bswap_32((__force u32) (be32) (n))
	#define host_to_be32(n) ((__force be32) bswap_32((n)))
	#define le_to_host64(n) ((__force u64) (le64) (n))
	#define host_to_le64(n) ((__force le64) (u64) (n))
	#define be_to_host64(n) bswap_64((__force u64) (be64) (n))
	#define host_to_be64(n) ((__force be64) bswap_64((n)))
	#elif __BYTE_ORDER == __BIG_ENDIAN
	#define le_to_host16(n) bswap_16(n)
	#define host_to_le16(n) bswap_16(n)
	#define be_to_host16(n) (n)
	#define host_to_be16(n) (n)
	#define le_to_host32(n) bswap_32(n)
	#define be_to_host32(n) (n)
	#define host_to_be32(n) (n)
	#define le_to_host64(n) bswap_64(n)
	#define host_to_le64(n) bswap_64(n)
	#define be_to_host64(n) (n)
	#define host_to_be64(n) (n)
	#ifndef WORDS_BIGENDIAN
	#define WORDS_BIGENDIAN
	#endif
	#else
	#error Could not determine CPU byte order
	#endif

	#define WPA_BYTE_SWAP_DEFINED
	#endif /* !WPA_BYTE_SWAP_DEFINED */


	/* Macros for handling unaligned memory accesses */

	#define WPA_GET_BE16(a) ((u16) (((a)[0] << 8) \| (a)[1]))
	#define WPA_PUT_BE16(a, val) \
	do { \
	(a)[0] = ((u16) (val)) >> 8; \
	(a)[1] = ((u16) (val)) & 0xff; \
	} while (0)

	#define WPA_GET_LE16(a) ((u16) (((a)[1] << 8) \| (a)[0]))
	#define WPA_PUT_LE16(a, val) \
	do { \
	(a)[1] = ((u16) (val)) >> 8; \
	(a)[0] = ((u16) (val)) & 0xff; \
	} while (0)

	#define WPA_GET_BE24(a) ((((u32) (a)[0]) << 16) \| (((u32) (a)[1]) << 8) \| \
	((u32) (a)[2]))
	#define WPA_PUT_BE24(a, val) \
	do { \
	(a)[0] = (u8) ((((u32) (val)) >> 16) & 0xff); \
	(a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff); \
	(a)[2] = (u8) (((u32) (val)) & 0xff); \
	} while (0)

	#define WPA_GET_BE32(a) ((((u32) (a)[0]) << 24) \| (((u32) (a)[1]) << 16) \| \
	(((u32) (a)[2]) << 8) \| ((u32) (a)[3]))
	#define WPA_PUT_BE32(a, val) \
	do { \
	(a)[0] = (u8) ((((u32) (val)) >> 24) & 0xff); \
	(a)[1] = (u8) ((((u32) (val)) >> 16) & 0xff); \
	(a)[2] = (u8) ((((u32) (val)) >> 8) & 0xff); \
	(a)[3] = (u8) (((u32) (val)) & 0xff); \
	} while (0)

	#define WPA_GET_LE32(a) ((((u32) (a)[3]) << 24) \| (((u32) (a)[2]) << 16) \| \
	(((u32) (a)[1]) << 8) \| ((u32) (a)[0]))
	#define WPA_PUT_LE32(a, val) \
	do { \
	(a)[3] = (u8) ((((u32) (val)) >> 24) & 0xff); \
	(a)[2] = (u8) ((((u32) (val)) >> 16) & 0xff); \
	(a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff); \
	(a)[0] = (u8) (((u32) (val)) & 0xff); \
	} while (0)

	#define WPA_GET_BE64(a) ((((u64) (a)[0]) << 56) \| (((u64) (a)[1]) << 48) \| \
	(((u64) (a)[2]) << 40) \| (((u64) (a)[3]) << 32) \| \
	(((u64) (a)[4]) << 24) \| (((u64) (a)[5]) << 16) \| \
	(((u64) (a)[6]) << 8) \| ((u64) (a)[7]))
	#define WPA_PUT_BE64(a, val) \
	do { \
	(a)[0] = (u8) (((u64) (val)) >> 56); \
	(a)[1] = (u8) (((u64) (val)) >> 48); \
	(a)[2] = (u8) (((u64) (val)) >> 40); \
	(a)[3] = (u8) (((u64) (val)) >> 32); \
	(a)[4] = (u8) (((u64) (val)) >> 24); \
	(a)[5] = (u8) (((u64) (val)) >> 16); \
	(a)[6] = (u8) (((u64) (val)) >> 8); \
	(a)[7] = (u8) (((u64) (val)) & 0xff); \
	} while (0)

	#define WPA_GET_LE64(a) ((((u64) (a)[7]) << 56) \| (((u64) (a)[6]) << 48) \| \
	(((u64) (a)[5]) << 40) \| (((u64) (a)[4]) << 32) \| \
	(((u64) (a)[3]) << 24) \| (((u64) (a)[2]) << 16) \| \
	(((u64) (a)[1]) << 8) \| ((u64) (a)[0]))


	#ifndef ETH_ALEN
	#define ETH_ALEN 6
	#endif
	#ifndef IFNAMSIZ
	#define IFNAMSIZ 16
	#endif
	#ifndef ETH_P_ALL
	#define ETH_P_ALL 0x0003
	#endif
	#ifndef ETH_P_80211_ENCAP
	#define ETH_P_80211_ENCAP 0x890d /* TDLS comes under this category */
	#endif
	#ifndef ETH_P_PAE
	#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
	#endif /* ETH_P_PAE */
	#ifndef ETH_P_EAPOL
	#define ETH_P_EAPOL ETH_P_PAE
	#endif /* ETH_P_EAPOL */
	#ifndef ETH_P_RSN_PREAUTH
	#define ETH_P_RSN_PREAUTH 0x88c7
	#endif /* ETH_P_RSN_PREAUTH */
	#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"

	/*
	* Compact form for string representation of MAC address
	* To be used, e.g., for constructing dbus paths for P2P Devices
	*/
	#define COMPACT_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_compact_aton(const char txt, u8 addr);
	int hwaddr_aton2(const char txt, u8 addr);
	int hex2byte(const char *hex);
	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 */

	void printf_encode(char txt, size_t maxlen, const u8 data, size_t len);
	size_t printf_decode(u8 buf, size_t maxlen, const char str);

	const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len);

	char * wpa_config_parse_string(const char value, size_t len);
	int is_hex(const u8 *data, size_t len);
	size_t merge_byte_arrays(u8 *res, size_t res_len,
	const u8 *src1, size_t src1_len,
	const u8 *src2, size_t src2_len);

	static inline int is_zero_ether_addr(const u8 *a)
	{
	return !(a[0] \| a[1] \| a[2] \| a[3] \| a[4] \| a[5]);
	}

	static inline int is_broadcast_ether_addr(const u8 *a)
	{
	return (a[0] & a[1] & a[2] & a[3] & a[4] & a[5]) == 0xff;
	}

	#define broadcast_ether_addr (const u8 *) "\xff\xff\xff\xff\xff\xff"

	#include "wpa_debug.h"


	/*
	* 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))

	#ifdef CONFIG_VALGRIND
	#include <valgrind/memcheck.h>
	#define WPA_MEM_DEFINED(ptr, len) VALGRIND_MAKE_MEM_DEFINED((ptr), (len))
	#else /* CONFIG_VALGRIND */
	#define WPA_MEM_DEFINED(ptr, len) do { } while (0)
	#endif /* CONFIG_VALGRIND */

	#endif /* COMMON_H */