2 * wpa_supplicant/hostapd / common helper functions, etc.
3 * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
20 #if defined(__linux__) || defined(__GLIBC__)
23 #endif /* __linux__ */
25 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \
27 #include <sys/types.h>
28 #include <sys/endian.h>
29 #define __BYTE_ORDER _BYTE_ORDER
30 #define __LITTLE_ENDIAN _LITTLE_ENDIAN
31 #define __BIG_ENDIAN _BIG_ENDIAN
33 #define bswap_16 swap16
34 #define bswap_32 swap32
35 #define bswap_64 swap64
36 #else /* __OpenBSD__ */
37 #define bswap_16 bswap16
38 #define bswap_32 bswap32
39 #define bswap_64 bswap64
40 #endif /* __OpenBSD__ */
41 #endif /* defined(__FreeBSD__) || defined(__NetBSD__) ||
42 * defined(__DragonFly__) || defined(__OpenBSD__) */
45 #include <sys/types.h>
46 #include <machine/endian.h>
47 #define __BYTE_ORDER _BYTE_ORDER
48 #define __LITTLE_ENDIAN _LITTLE_ENDIAN
49 #define __BIG_ENDIAN _BIG_ENDIAN
50 static inline unsigned short bswap_16(unsigned short v)
52 return ((v & 0xff) << 8) | (v >> 8);
55 static inline unsigned int bswap_32(unsigned int v)
57 return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
58 ((v & 0xff0000) >> 8) | (v >> 24);
60 #endif /* __APPLE__ */
62 #ifdef CONFIG_TI_COMPILER
63 #define __BIG_ENDIAN 4321
64 #define __LITTLE_ENDIAN 1234
66 #define __BYTE_ORDER __BIG_ENDIAN
68 #define __BYTE_ORDER __LITTLE_ENDIAN
70 #endif /* CONFIG_TI_COMPILER */
73 #define __BIG_ENDIAN 4321
74 #define __LITTLE_ENDIAN 1234
75 #define __BYTE_ORDER __LITTLE_ENDIAN
76 #endif /* __SYMBIAN32__ */
78 #ifdef CONFIG_NATIVE_WINDOWS
81 typedef int socklen_t;
84 #define MSG_DONTWAIT 0 /* not supported */
87 #endif /* CONFIG_NATIVE_WINDOWS */
91 #define inline __inline
95 #define vsnprintf _vsnprintf
97 #define close closesocket
101 /* Define platform specific integer types */
112 #define WPA_TYPES_DEFINED
113 #endif /* _MSC_VER */
116 typedef unsigned long long u64;
120 typedef long long s64;
124 #define WPA_TYPES_DEFINED
125 #endif /* __vxworks */
127 #ifdef CONFIG_TI_COMPILER
128 #ifdef _LLONG_AVAILABLE
129 typedef unsigned long long u64;
132 * TODO: 64-bit variable not available. Using long as a workaround to test the
133 * build, but this will likely not work for all operations.
135 typedef unsigned long u64;
137 typedef unsigned int u32;
138 typedef unsigned short u16;
139 typedef unsigned char u8;
140 #define WPA_TYPES_DEFINED
141 #endif /* CONFIG_TI_COMPILER */
144 #define __REMOVE_PLATSEC_DIAGNOSTICS__
150 #define WPA_TYPES_DEFINED
151 #endif /* __SYMBIAN32__ */
153 #ifndef WPA_TYPES_DEFINED
154 #ifdef CONFIG_USE_INTTYPES_H
155 #include <inttypes.h>
159 typedef uint64_t u64;
160 typedef uint32_t u32;
161 typedef uint16_t u16;
167 #define WPA_TYPES_DEFINED
168 #endif /* !WPA_TYPES_DEFINED */
171 /* Define platform specific byte swapping macros */
173 #if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS)
175 static inline unsigned short wpa_swap_16(unsigned short v)
177 return ((v & 0xff) << 8) | (v >> 8);
180 static inline unsigned int wpa_swap_32(unsigned int v)
182 return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
183 ((v & 0xff0000) >> 8) | (v >> 24);
186 #define le_to_host16(n) (n)
187 #define host_to_le16(n) (n)
188 #define be_to_host16(n) wpa_swap_16(n)
189 #define host_to_be16(n) wpa_swap_16(n)
190 #define le_to_host32(n) (n)
191 #define be_to_host32(n) wpa_swap_32(n)
192 #define host_to_be32(n) wpa_swap_32(n)
194 #define WPA_BYTE_SWAP_DEFINED
196 #endif /* __CYGWIN__ || CONFIG_NATIVE_WINDOWS */
199 #ifndef WPA_BYTE_SWAP_DEFINED
202 #ifndef __LITTLE_ENDIAN
204 #define __LITTLE_ENDIAN 1234
205 #define __BIG_ENDIAN 4321
207 #define __BYTE_ORDER __BIG_ENDIAN
209 #endif /* __BIG_ENDIAN */
210 #endif /* __LITTLE_ENDIAN */
211 #endif /* __BYTE_ORDER */
213 #if __BYTE_ORDER == __LITTLE_ENDIAN
214 #define le_to_host16(n) ((__force u16) (le16) (n))
215 #define host_to_le16(n) ((__force le16) (u16) (n))
216 #define be_to_host16(n) bswap_16((__force u16) (be16) (n))
217 #define host_to_be16(n) ((__force be16) bswap_16((n)))
218 #define le_to_host32(n) ((__force u32) (le32) (n))
219 #define host_to_le32(n) ((__force le32) (u32) (n))
220 #define be_to_host32(n) bswap_32((__force u32) (be32) (n))
221 #define host_to_be32(n) ((__force be32) bswap_32((n)))
222 #define le_to_host64(n) ((__force u64) (le64) (n))
223 #define host_to_le64(n) ((__force le64) (u64) (n))
224 #define be_to_host64(n) bswap_64((__force u64) (be64) (n))
225 #define host_to_be64(n) ((__force be64) bswap_64((n)))
226 #elif __BYTE_ORDER == __BIG_ENDIAN
227 #define le_to_host16(n) bswap_16(n)
228 #define host_to_le16(n) bswap_16(n)
229 #define be_to_host16(n) (n)
230 #define host_to_be16(n) (n)
231 #define le_to_host32(n) bswap_32(n)
232 #define be_to_host32(n) (n)
233 #define host_to_be32(n) (n)
234 #define le_to_host64(n) bswap_64(n)
235 #define host_to_le64(n) bswap_64(n)
236 #define be_to_host64(n) (n)
237 #define host_to_be64(n) (n)
238 #ifndef WORDS_BIGENDIAN
239 #define WORDS_BIGENDIAN
242 #error Could not determine CPU byte order
245 #define WPA_BYTE_SWAP_DEFINED
246 #endif /* !WPA_BYTE_SWAP_DEFINED */
249 /* Macros for handling unaligned memory accesses */
251 #define WPA_GET_BE16(a) ((u16) (((a)[0] << 8) | (a)[1]))
252 #define WPA_PUT_BE16(a, val) \
254 (a)[0] = ((u16) (val)) >> 8; \
255 (a)[1] = ((u16) (val)) & 0xff; \
258 #define WPA_GET_LE16(a) ((u16) (((a)[1] << 8) | (a)[0]))
259 #define WPA_PUT_LE16(a, val) \
261 (a)[1] = ((u16) (val)) >> 8; \
262 (a)[0] = ((u16) (val)) & 0xff; \
265 #define WPA_GET_BE24(a) ((((u32) (a)[0]) << 16) | (((u32) (a)[1]) << 8) | \
267 #define WPA_PUT_BE24(a, val) \
269 (a)[0] = (u8) ((((u32) (val)) >> 16) & 0xff); \
270 (a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff); \
271 (a)[2] = (u8) (((u32) (val)) & 0xff); \
274 #define WPA_GET_BE32(a) ((((u32) (a)[0]) << 24) | (((u32) (a)[1]) << 16) | \
275 (((u32) (a)[2]) << 8) | ((u32) (a)[3]))
276 #define WPA_PUT_BE32(a, val) \
278 (a)[0] = (u8) ((((u32) (val)) >> 24) & 0xff); \
279 (a)[1] = (u8) ((((u32) (val)) >> 16) & 0xff); \
280 (a)[2] = (u8) ((((u32) (val)) >> 8) & 0xff); \
281 (a)[3] = (u8) (((u32) (val)) & 0xff); \
284 #define WPA_GET_LE32(a) ((((u32) (a)[3]) << 24) | (((u32) (a)[2]) << 16) | \
285 (((u32) (a)[1]) << 8) | ((u32) (a)[0]))
286 #define WPA_PUT_LE32(a, val) \
288 (a)[3] = (u8) ((((u32) (val)) >> 24) & 0xff); \
289 (a)[2] = (u8) ((((u32) (val)) >> 16) & 0xff); \
290 (a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff); \
291 (a)[0] = (u8) (((u32) (val)) & 0xff); \
294 #define WPA_GET_BE64(a) ((((u64) (a)[0]) << 56) | (((u64) (a)[1]) << 48) | \
295 (((u64) (a)[2]) << 40) | (((u64) (a)[3]) << 32) | \
296 (((u64) (a)[4]) << 24) | (((u64) (a)[5]) << 16) | \
297 (((u64) (a)[6]) << 8) | ((u64) (a)[7]))
298 #define WPA_PUT_BE64(a, val) \
300 (a)[0] = (u8) (((u64) (val)) >> 56); \
301 (a)[1] = (u8) (((u64) (val)) >> 48); \
302 (a)[2] = (u8) (((u64) (val)) >> 40); \
303 (a)[3] = (u8) (((u64) (val)) >> 32); \
304 (a)[4] = (u8) (((u64) (val)) >> 24); \
305 (a)[5] = (u8) (((u64) (val)) >> 16); \
306 (a)[6] = (u8) (((u64) (val)) >> 8); \
307 (a)[7] = (u8) (((u64) (val)) & 0xff); \
310 #define WPA_GET_LE64(a) ((((u64) (a)[7]) << 56) | (((u64) (a)[6]) << 48) | \
311 (((u64) (a)[5]) << 40) | (((u64) (a)[4]) << 32) | \
312 (((u64) (a)[3]) << 24) | (((u64) (a)[2]) << 16) | \
313 (((u64) (a)[1]) << 8) | ((u64) (a)[0]))
323 #define ETH_P_ALL 0x0003
326 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
327 #endif /* ETH_P_PAE */
329 #define ETH_P_EAPOL ETH_P_PAE
330 #endif /* ETH_P_EAPOL */
331 #ifndef ETH_P_RSN_PREAUTH
332 #define ETH_P_RSN_PREAUTH 0x88c7
333 #endif /* ETH_P_RSN_PREAUTH */
335 #define ETH_P_RRB 0x890D
336 #endif /* ETH_P_RRB */
340 #define PRINTF_FORMAT(a,b) __attribute__ ((format (printf, (a), (b))))
341 #define STRUCT_PACKED __attribute__ ((packed))
342 #define UNUSED __attribute__ ((unused))
344 #define PRINTF_FORMAT(a,b)
345 #define STRUCT_PACKED
350 #ifdef CONFIG_ANSI_C_EXTRA
352 #if !defined(_MSC_VER) || _MSC_VER < 1400
353 /* snprintf - used in number of places; sprintf() is _not_ a good replacement
354 * due to possible buffer overflow; see, e.g.,
355 * http://www.ijs.si/software/snprintf/ for portable implementation of
357 int snprintf(char *str, size_t size, const char *format, ...);
359 /* vsnprintf - only used for wpa_msg() in wpa_supplicant.c */
360 int vsnprintf(char *str, size_t size, const char *format, va_list ap);
361 #endif /* !defined(_MSC_VER) || _MSC_VER < 1400 */
363 /* getopt - only used in main.c */
364 int getopt(int argc, char *const argv[], const char *optstring);
368 #ifndef CONFIG_NO_SOCKLEN_T_TYPEDEF
369 #ifndef __socklen_t_defined
370 typedef int socklen_t;
374 /* inline - define as __inline or just define it to be empty, if needed */
375 #ifdef CONFIG_NO_INLINE
378 #define inline __inline
382 #define __func__ "__func__ not defined"
386 #define bswap_16(a) ((((u16) (a) << 8) & 0xff00) | (((u16) (a) >> 8) & 0xff))
390 #define bswap_32(a) ((((u32) (a) << 24) & 0xff000000) | \
391 (((u32) (a) << 8) & 0xff0000) | \
392 (((u32) (a) >> 8) & 0xff00) | \
393 (((u32) (a) >> 24) & 0xff))
397 #define MSG_DONTWAIT 0
401 void perror(const char *s);
402 #endif /* _WIN32_WCE */
404 #endif /* CONFIG_ANSI_C_EXTRA */
407 #define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
408 #define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
412 #define BIT(x) (1 << (x))
416 * Definitions for sparse validation
417 * (http://kernel.org/pub/linux/kernel/people/josh/sparse/)
420 #define __force __attribute__((force))
421 #define __bitwise __attribute__((bitwise))
427 typedef u16 __bitwise be16;
428 typedef u16 __bitwise le16;
429 typedef u32 __bitwise be32;
430 typedef u32 __bitwise le32;
431 typedef u64 __bitwise be64;
432 typedef u64 __bitwise le64;
435 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
436 #define __must_check __attribute__((__warn_unused_result__))
439 #endif /* __GNUC__ */
440 #endif /* __must_check */
442 int hwaddr_aton(const char *txt, u8 *addr);
443 int hwaddr_aton2(const char *txt, u8 *addr);
444 int hexstr2bin(const char *hex, u8 *buf, size_t len);
445 void inc_byte_array(u8 *counter, size_t len);
446 void wpa_get_ntp_timestamp(u8 *buf);
447 int wpa_snprintf_hex(char *buf, size_t buf_size, const u8 *data, size_t len);
448 int wpa_snprintf_hex_uppercase(char *buf, size_t buf_size, const u8 *data,
451 #ifdef CONFIG_NATIVE_WINDOWS
452 void wpa_unicode2ascii_inplace(TCHAR *str);
453 TCHAR * wpa_strdup_tchar(const char *str);
454 #else /* CONFIG_NATIVE_WINDOWS */
455 #define wpa_unicode2ascii_inplace(s) do { } while (0)
456 #define wpa_strdup_tchar(s) strdup((s))
457 #endif /* CONFIG_NATIVE_WINDOWS */
459 const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len);
461 static inline int is_zero_ether_addr(const u8 *a)
463 return !(a[0] | a[1] | a[2] | a[3] | a[4] | a[5]);
466 #include "wpa_debug.h"
470 * gcc 4.4 ends up generating strict-aliasing warnings about some very common
471 * networking socket uses that do not really result in a real problem and
472 * cannot be easily avoided with union-based type-punning due to struct
473 * definitions including another struct in system header files. To avoid having
474 * to fully disable strict-aliasing warnings, provide a mechanism to hide the
475 * typecast from aliasing for now. A cleaner solution will hopefully be found
476 * in the future to handle these cases.
478 void * __hide_aliasing_typecast(void *foo);
479 #define aliasing_hide_typecast(a,t) (t *) __hide_aliasing_typecast((a))
481 #endif /* COMMON_H */