/* * wpa_supplicant/hostapd / common helper functions, etc. * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Alternatively, this software may be distributed under the terms of BSD * license. * * See README and COPYING for more details. */ #ifndef COMMON_H #define COMMON_H #include "os.h" #if defined(__XTENSA__) #include <machine/endian.h> #define __BYTE_ORDER BYTE_ORDER #define __LITTLE_ENDIAN LITTLE_ENDIAN #define __BIG_ENDIAN BIG_ENDIAN #endif /*__XTENSA__*/ #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 __SYMBIAN32__ #define __BIG_ENDIAN 4321 #define __LITTLE_ENDIAN 1234 #define __BYTE_ORDER __LITTLE_ENDIAN #endif /* __SYMBIAN32__ */ #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 */ #ifdef __SYMBIAN32__ #define __REMOVE_PLATSEC_DIAGNOSTICS__ #include <e32def.h> typedef TUint64 u64; typedef TUint32 u32; typedef TUint16 u16; typedef TUint8 u8; #define WPA_TYPES_DEFINED #endif /* __SYMBIAN32__ */ #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_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" #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 */