2 * wpa_supplicant/hostapd / common helper functions, etc.
3 * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
14 #if defined(__linux__) || defined(__GLIBC__)
17 #endif /* __linux__ */
19 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \
21 #include <sys/types.h>
22 #include <sys/endian.h>
23 #define __BYTE_ORDER _BYTE_ORDER
24 #define __LITTLE_ENDIAN _LITTLE_ENDIAN
25 #define __BIG_ENDIAN _BIG_ENDIAN
27 #define bswap_16 swap16
28 #define bswap_32 swap32
29 #define bswap_64 swap64
30 #else /* __OpenBSD__ */
31 #define bswap_16 bswap16
32 #define bswap_32 bswap32
33 #define bswap_64 bswap64
34 #endif /* __OpenBSD__ */
35 #endif /* defined(__FreeBSD__) || defined(__NetBSD__) ||
36 * defined(__DragonFly__) || defined(__OpenBSD__) */
39 #include <sys/types.h>
40 #include <machine/endian.h>
41 #define __BYTE_ORDER _BYTE_ORDER
42 #define __LITTLE_ENDIAN _LITTLE_ENDIAN
43 #define __BIG_ENDIAN _BIG_ENDIAN
44 static inline unsigned short bswap_16(unsigned short v)
46 return ((v & 0xff) << 8) | (v >> 8);
49 static inline unsigned int bswap_32(unsigned int v)
51 return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
52 ((v & 0xff0000) >> 8) | (v >> 24);
54 #endif /* __APPLE__ */
56 #ifdef CONFIG_TI_COMPILER
57 #define __BIG_ENDIAN 4321
58 #define __LITTLE_ENDIAN 1234
60 #define __BYTE_ORDER __BIG_ENDIAN
62 #define __BYTE_ORDER __LITTLE_ENDIAN
64 #endif /* CONFIG_TI_COMPILER */
66 #ifdef CONFIG_NATIVE_WINDOWS
69 typedef int socklen_t;
72 #define MSG_DONTWAIT 0 /* not supported */
75 #endif /* CONFIG_NATIVE_WINDOWS */
78 #define inline __inline
81 #define vsnprintf _vsnprintf
83 #define close closesocket
87 /* Define platform specific integer types */
98 #define WPA_TYPES_DEFINED
102 typedef unsigned long long u64;
106 typedef long long s64;
110 #define WPA_TYPES_DEFINED
111 #endif /* __vxworks */
113 #ifdef CONFIG_TI_COMPILER
114 #ifdef _LLONG_AVAILABLE
115 typedef unsigned long long u64;
118 * TODO: 64-bit variable not available. Using long as a workaround to test the
119 * build, but this will likely not work for all operations.
121 typedef unsigned long u64;
123 typedef unsigned int u32;
124 typedef unsigned short u16;
125 typedef unsigned char u8;
126 #define WPA_TYPES_DEFINED
127 #endif /* CONFIG_TI_COMPILER */
129 #ifndef WPA_TYPES_DEFINED
130 #ifdef CONFIG_USE_INTTYPES_H
131 #include <inttypes.h>
135 typedef uint64_t u64;
136 typedef uint32_t u32;
137 typedef uint16_t u16;
143 #define WPA_TYPES_DEFINED
144 #endif /* !WPA_TYPES_DEFINED */
147 /* Define platform specific byte swapping macros */
149 #if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS)
151 static inline unsigned short wpa_swap_16(unsigned short v)
153 return ((v & 0xff) << 8) | (v >> 8);
156 static inline unsigned int wpa_swap_32(unsigned int v)
158 return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
159 ((v & 0xff0000) >> 8) | (v >> 24);
162 #define le_to_host16(n) (n)
163 #define host_to_le16(n) (n)
164 #define be_to_host16(n) wpa_swap_16(n)
165 #define host_to_be16(n) wpa_swap_16(n)
166 #define le_to_host32(n) (n)
167 #define be_to_host32(n) wpa_swap_32(n)
168 #define host_to_be32(n) wpa_swap_32(n)
170 #define WPA_BYTE_SWAP_DEFINED
172 #endif /* __CYGWIN__ || CONFIG_NATIVE_WINDOWS */
175 #ifndef WPA_BYTE_SWAP_DEFINED
178 #ifndef __LITTLE_ENDIAN
180 #define __LITTLE_ENDIAN 1234
181 #define __BIG_ENDIAN 4321
183 #define __BYTE_ORDER __BIG_ENDIAN
185 #endif /* __BIG_ENDIAN */
186 #endif /* __LITTLE_ENDIAN */
187 #endif /* __BYTE_ORDER */
189 #if __BYTE_ORDER == __LITTLE_ENDIAN
190 #define le_to_host16(n) ((__force u16) (le16) (n))
191 #define host_to_le16(n) ((__force le16) (u16) (n))
192 #define be_to_host16(n) bswap_16((__force u16) (be16) (n))
193 #define host_to_be16(n) ((__force be16) bswap_16((n)))
194 #define le_to_host32(n) ((__force u32) (le32) (n))
195 #define host_to_le32(n) ((__force le32) (u32) (n))
196 #define be_to_host32(n) bswap_32((__force u32) (be32) (n))
197 #define host_to_be32(n) ((__force be32) bswap_32((n)))
198 #define le_to_host64(n) ((__force u64) (le64) (n))
199 #define host_to_le64(n) ((__force le64) (u64) (n))
200 #define be_to_host64(n) bswap_64((__force u64) (be64) (n))
201 #define host_to_be64(n) ((__force be64) bswap_64((n)))
202 #elif __BYTE_ORDER == __BIG_ENDIAN
203 #define le_to_host16(n) bswap_16(n)
204 #define host_to_le16(n) bswap_16(n)
205 #define be_to_host16(n) (n)
206 #define host_to_be16(n) (n)
207 #define le_to_host32(n) bswap_32(n)
208 #define be_to_host32(n) (n)
209 #define host_to_be32(n) (n)
210 #define le_to_host64(n) bswap_64(n)
211 #define host_to_le64(n) bswap_64(n)
212 #define be_to_host64(n) (n)
213 #define host_to_be64(n) (n)
214 #ifndef WORDS_BIGENDIAN
215 #define WORDS_BIGENDIAN
218 #error Could not determine CPU byte order
221 #define WPA_BYTE_SWAP_DEFINED
222 #endif /* !WPA_BYTE_SWAP_DEFINED */
225 /* Macros for handling unaligned memory accesses */
227 #define WPA_GET_BE16(a) ((u16) (((a)[0] << 8) | (a)[1]))
228 #define WPA_PUT_BE16(a, val) \
230 (a)[0] = ((u16) (val)) >> 8; \
231 (a)[1] = ((u16) (val)) & 0xff; \
234 #define WPA_GET_LE16(a) ((u16) (((a)[1] << 8) | (a)[0]))
235 #define WPA_PUT_LE16(a, val) \
237 (a)[1] = ((u16) (val)) >> 8; \
238 (a)[0] = ((u16) (val)) & 0xff; \
241 #define WPA_GET_BE24(a) ((((u32) (a)[0]) << 16) | (((u32) (a)[1]) << 8) | \
243 #define WPA_PUT_BE24(a, val) \
245 (a)[0] = (u8) ((((u32) (val)) >> 16) & 0xff); \
246 (a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff); \
247 (a)[2] = (u8) (((u32) (val)) & 0xff); \
250 #define WPA_GET_BE32(a) ((((u32) (a)[0]) << 24) | (((u32) (a)[1]) << 16) | \
251 (((u32) (a)[2]) << 8) | ((u32) (a)[3]))
252 #define WPA_PUT_BE32(a, val) \
254 (a)[0] = (u8) ((((u32) (val)) >> 24) & 0xff); \
255 (a)[1] = (u8) ((((u32) (val)) >> 16) & 0xff); \
256 (a)[2] = (u8) ((((u32) (val)) >> 8) & 0xff); \
257 (a)[3] = (u8) (((u32) (val)) & 0xff); \
260 #define WPA_GET_LE32(a) ((((u32) (a)[3]) << 24) | (((u32) (a)[2]) << 16) | \
261 (((u32) (a)[1]) << 8) | ((u32) (a)[0]))
262 #define WPA_PUT_LE32(a, val) \
264 (a)[3] = (u8) ((((u32) (val)) >> 24) & 0xff); \
265 (a)[2] = (u8) ((((u32) (val)) >> 16) & 0xff); \
266 (a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff); \
267 (a)[0] = (u8) (((u32) (val)) & 0xff); \
270 #define WPA_GET_BE64(a) ((((u64) (a)[0]) << 56) | (((u64) (a)[1]) << 48) | \
271 (((u64) (a)[2]) << 40) | (((u64) (a)[3]) << 32) | \
272 (((u64) (a)[4]) << 24) | (((u64) (a)[5]) << 16) | \
273 (((u64) (a)[6]) << 8) | ((u64) (a)[7]))
274 #define WPA_PUT_BE64(a, val) \
276 (a)[0] = (u8) (((u64) (val)) >> 56); \
277 (a)[1] = (u8) (((u64) (val)) >> 48); \
278 (a)[2] = (u8) (((u64) (val)) >> 40); \
279 (a)[3] = (u8) (((u64) (val)) >> 32); \
280 (a)[4] = (u8) (((u64) (val)) >> 24); \
281 (a)[5] = (u8) (((u64) (val)) >> 16); \
282 (a)[6] = (u8) (((u64) (val)) >> 8); \
283 (a)[7] = (u8) (((u64) (val)) & 0xff); \
286 #define WPA_GET_LE64(a) ((((u64) (a)[7]) << 56) | (((u64) (a)[6]) << 48) | \
287 (((u64) (a)[5]) << 40) | (((u64) (a)[4]) << 32) | \
288 (((u64) (a)[3]) << 24) | (((u64) (a)[2]) << 16) | \
289 (((u64) (a)[1]) << 8) | ((u64) (a)[0]))
299 #define ETH_P_ALL 0x0003
301 #ifndef ETH_P_80211_ENCAP
302 #define ETH_P_80211_ENCAP 0x890d /* TDLS comes under this category */
305 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
306 #endif /* ETH_P_PAE */
308 #define ETH_P_EAPOL ETH_P_PAE
309 #endif /* ETH_P_EAPOL */
310 #ifndef ETH_P_RSN_PREAUTH
311 #define ETH_P_RSN_PREAUTH 0x88c7
312 #endif /* ETH_P_RSN_PREAUTH */
314 #define ETH_P_RRB 0x890D
315 #endif /* ETH_P_RRB */
319 #define PRINTF_FORMAT(a,b) __attribute__ ((format (printf, (a), (b))))
320 #define STRUCT_PACKED __attribute__ ((packed))
322 #define PRINTF_FORMAT(a,b)
323 #define STRUCT_PACKED
327 #ifdef CONFIG_ANSI_C_EXTRA
329 #if !defined(_MSC_VER) || _MSC_VER < 1400
330 /* snprintf - used in number of places; sprintf() is _not_ a good replacement
331 * due to possible buffer overflow; see, e.g.,
332 * http://www.ijs.si/software/snprintf/ for portable implementation of
334 int snprintf(char *str, size_t size, const char *format, ...);
336 /* vsnprintf - only used for wpa_msg() in wpa_supplicant.c */
337 int vsnprintf(char *str, size_t size, const char *format, va_list ap);
338 #endif /* !defined(_MSC_VER) || _MSC_VER < 1400 */
340 /* getopt - only used in main.c */
341 int getopt(int argc, char *const argv[], const char *optstring);
345 #ifndef CONFIG_NO_SOCKLEN_T_TYPEDEF
346 #ifndef __socklen_t_defined
347 typedef int socklen_t;
351 /* inline - define as __inline or just define it to be empty, if needed */
352 #ifdef CONFIG_NO_INLINE
355 #define inline __inline
359 #define __func__ "__func__ not defined"
363 #define bswap_16(a) ((((u16) (a) << 8) & 0xff00) | (((u16) (a) >> 8) & 0xff))
367 #define bswap_32(a) ((((u32) (a) << 24) & 0xff000000) | \
368 (((u32) (a) << 8) & 0xff0000) | \
369 (((u32) (a) >> 8) & 0xff00) | \
370 (((u32) (a) >> 24) & 0xff))
374 #define MSG_DONTWAIT 0
378 void perror(const char *s);
379 #endif /* _WIN32_WCE */
381 #endif /* CONFIG_ANSI_C_EXTRA */
384 #define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
385 #define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
388 * Compact form for string representation of MAC address
389 * To be used, e.g., for constructing dbus paths for P2P Devices
391 #define COMPACT_MACSTR "%02x%02x%02x%02x%02x%02x"
395 #define BIT(x) (1 << (x))
399 * Definitions for sparse validation
400 * (http://kernel.org/pub/linux/kernel/people/josh/sparse/)
403 #define __force __attribute__((force))
404 #define __bitwise __attribute__((bitwise))
410 typedef u16 __bitwise be16;
411 typedef u16 __bitwise le16;
412 typedef u32 __bitwise be32;
413 typedef u32 __bitwise le32;
414 typedef u64 __bitwise be64;
415 typedef u64 __bitwise le64;
418 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
419 #define __must_check __attribute__((__warn_unused_result__))
422 #endif /* __GNUC__ */
423 #endif /* __must_check */
425 int hwaddr_aton(const char *txt, u8 *addr);
426 int hwaddr_compact_aton(const char *txt, u8 *addr);
427 int hwaddr_aton2(const char *txt, u8 *addr);
428 int hex2byte(const char *hex);
429 int hexstr2bin(const char *hex, u8 *buf, size_t len);
430 void inc_byte_array(u8 *counter, size_t len);
431 void wpa_get_ntp_timestamp(u8 *buf);
432 int wpa_snprintf_hex(char *buf, size_t buf_size, const u8 *data, size_t len);
433 int wpa_snprintf_hex_uppercase(char *buf, size_t buf_size, const u8 *data,
436 #ifdef CONFIG_NATIVE_WINDOWS
437 void wpa_unicode2ascii_inplace(TCHAR *str);
438 TCHAR * wpa_strdup_tchar(const char *str);
439 #else /* CONFIG_NATIVE_WINDOWS */
440 #define wpa_unicode2ascii_inplace(s) do { } while (0)
441 #define wpa_strdup_tchar(s) strdup((s))
442 #endif /* CONFIG_NATIVE_WINDOWS */
444 void printf_encode(char *txt, size_t maxlen, const u8 *data, size_t len);
445 size_t printf_decode(u8 *buf, size_t maxlen, const char *str);
447 const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len);
449 char * wpa_config_parse_string(const char *value, size_t *len);
450 int is_hex(const u8 *data, size_t len);
451 size_t merge_byte_arrays(u8 *res, size_t res_len,
452 const u8 *src1, size_t src1_len,
453 const u8 *src2, size_t src2_len);
455 static inline int is_zero_ether_addr(const u8 *a)
457 return !(a[0] | a[1] | a[2] | a[3] | a[4] | a[5]);
460 static inline int is_broadcast_ether_addr(const u8 *a)
462 return (a[0] & a[1] & a[2] & a[3] & a[4] & a[5]) == 0xff;
465 #define broadcast_ether_addr (const u8 *) "\xff\xff\xff\xff\xff\xff"
467 #include "wpa_debug.h"
471 * gcc 4.4 ends up generating strict-aliasing warnings about some very common
472 * networking socket uses that do not really result in a real problem and
473 * cannot be easily avoided with union-based type-punning due to struct
474 * definitions including another struct in system header files. To avoid having
475 * to fully disable strict-aliasing warnings, provide a mechanism to hide the
476 * typecast from aliasing for now. A cleaner solution will hopefully be found
477 * in the future to handle these cases.
479 void * __hide_aliasing_typecast(void *foo);
480 #define aliasing_hide_typecast(a,t) (t *) __hide_aliasing_typecast((a))
482 #ifdef CONFIG_VALGRIND
483 #include <valgrind/memcheck.h>
484 #define WPA_MEM_DEFINED(ptr, len) VALGRIND_MAKE_MEM_DEFINED((ptr), (len))
485 #else /* CONFIG_VALGRIND */
486 #define WPA_MEM_DEFINED(ptr, len) do { } while (0)
487 #endif /* CONFIG_VALGRIND */
489 #endif /* COMMON_H */