/* * wpa_supplicant/hostapd / common helper functions, etc. * Copyright (c) 2002-2007, Jouni Malinen * * 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 #include #endif /* __linux__ */ #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \ defined(__OpenBSD__) #include #include #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 #include #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 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 #else #include #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 host_to_le32(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 */ static inline u16 WPA_GET_BE16(const u8 *a) { return (a[0] << 8) | a[1]; } static inline void WPA_PUT_BE16(u8 *a, u16 val) { a[0] = val >> 8; a[1] = val & 0xff; } static inline u16 WPA_GET_LE16(const u8 *a) { return (a[1] << 8) | a[0]; } static inline void WPA_PUT_LE16(u8 *a, u16 val) { a[1] = val >> 8; a[0] = val & 0xff; } static inline u32 WPA_GET_BE24(const u8 *a) { return (a[0] << 16) | (a[1] << 8) | a[2]; } static inline void WPA_PUT_BE24(u8 *a, u32 val) { a[0] = (val >> 16) & 0xff; a[1] = (val >> 8) & 0xff; a[2] = val & 0xff; } static inline u32 WPA_GET_BE32(const u8 *a) { return (a[0] << 24) | (a[1] << 16) | (a[2] << 8) | a[3]; } static inline void WPA_PUT_BE32(u8 *a, u32 val) { a[0] = (val >> 24) & 0xff; a[1] = (val >> 16) & 0xff; a[2] = (val >> 8) & 0xff; a[3] = val & 0xff; } static inline u32 WPA_GET_LE32(const u8 *a) { return (a[3] << 24) | (a[2] << 16) | (a[1] << 8) | a[0]; } static inline void WPA_PUT_LE32(u8 *a, u32 val) { a[3] = (val >> 24) & 0xff; a[2] = (val >> 16) & 0xff; a[1] = (val >> 8) & 0xff; a[0] = val & 0xff; } static inline u64 WPA_GET_BE64(const u8 *a) { return (((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]); } static inline void WPA_PUT_BE64(u8 *a, u64 val) { a[0] = val >> 56; a[1] = val >> 48; a[2] = val >> 40; a[3] = val >> 32; a[4] = val >> 24; a[5] = val >> 16; a[6] = val >> 8; a[7] = val & 0xff; } static inline u64 WPA_GET_LE64(const u8 *a) { return (((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]); } static inline void WPA_PUT_LE64(u8 *a, u64 val) { a[7] = val >> 56; a[6] = val >> 48; a[5] = val >> 40; a[4] = val >> 32; a[3] = val >> 24; a[2] = val >> 16; a[1] = val >> 8; a[0] = val & 0xff; } #ifndef ETH_ALEN #define ETH_ALEN 6 #endif #ifndef ETH_HLEN #define ETH_HLEN 14 #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 */ #ifndef __maybe_unused #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) #define __maybe_unused __attribute__((unused)) #else #define __maybe_unused #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); int find_first_bit(u32 value); 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); char * dup_binstr(const void *src, size_t 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" struct wpa_freq_range_list { struct wpa_freq_range { unsigned int min; unsigned int max; } *range; unsigned int num; }; int freq_range_list_parse(struct wpa_freq_range_list *res, const char *value); int freq_range_list_includes(const struct wpa_freq_range_list *list, unsigned int freq); char * freq_range_list_str(const struct wpa_freq_range_list *list); int int_array_len(const int *a); void int_array_concat(int **res, const int *a); void int_array_sort_unique(int *a); void int_array_add_unique(int **res, int a); #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) void str_clear_free(char *str); void bin_clear_free(void *bin, size_t len); int random_mac_addr(u8 *addr); int random_mac_addr_keep_oui(u8 *addr); char * str_token(char *str, const char *delim, char **context); /* * 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 #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 */