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 host_to_le32(n) (n)
168 #define be_to_host32(n) wpa_swap_32(n)
169 #define host_to_be32(n) wpa_swap_32(n)
171 #define WPA_BYTE_SWAP_DEFINED
173 #endif /* __CYGWIN__ || CONFIG_NATIVE_WINDOWS */
176 #ifndef WPA_BYTE_SWAP_DEFINED
179 #ifndef __LITTLE_ENDIAN
181 #define __LITTLE_ENDIAN 1234
182 #define __BIG_ENDIAN 4321
184 #define __BYTE_ORDER __BIG_ENDIAN
186 #endif /* __BIG_ENDIAN */
187 #endif /* __LITTLE_ENDIAN */
188 #endif /* __BYTE_ORDER */
190 #if __BYTE_ORDER == __LITTLE_ENDIAN
191 #define le_to_host16(n) ((__force u16) (le16) (n))
192 #define host_to_le16(n) ((__force le16) (u16) (n))
193 #define be_to_host16(n) bswap_16((__force u16) (be16) (n))
194 #define host_to_be16(n) ((__force be16) bswap_16((n)))
195 #define le_to_host32(n) ((__force u32) (le32) (n))
196 #define host_to_le32(n) ((__force le32) (u32) (n))
197 #define be_to_host32(n) bswap_32((__force u32) (be32) (n))
198 #define host_to_be32(n) ((__force be32) bswap_32((n)))
199 #define le_to_host64(n) ((__force u64) (le64) (n))
200 #define host_to_le64(n) ((__force le64) (u64) (n))
201 #define be_to_host64(n) bswap_64((__force u64) (be64) (n))
202 #define host_to_be64(n) ((__force be64) bswap_64((n)))
203 #elif __BYTE_ORDER == __BIG_ENDIAN
204 #define le_to_host16(n) bswap_16(n)
205 #define host_to_le16(n) bswap_16(n)
206 #define be_to_host16(n) (n)
207 #define host_to_be16(n) (n)
208 #define le_to_host32(n) bswap_32(n)
209 #define host_to_le32(n) bswap_32(n)
210 #define be_to_host32(n) (n)
211 #define host_to_be32(n) (n)
212 #define le_to_host64(n) bswap_64(n)
213 #define host_to_le64(n) bswap_64(n)
214 #define be_to_host64(n) (n)
215 #define host_to_be64(n) (n)
216 #ifndef WORDS_BIGENDIAN
217 #define WORDS_BIGENDIAN
220 #error Could not determine CPU byte order
223 #define WPA_BYTE_SWAP_DEFINED
224 #endif /* !WPA_BYTE_SWAP_DEFINED */
227 /* Macros for handling unaligned memory accesses */
229 static inline u16 WPA_GET_BE16(const u8 *a)
231 return (a[0] << 8) | a[1];
234 static inline void WPA_PUT_BE16(u8 *a, u16 val)
240 static inline u16 WPA_GET_LE16(const u8 *a)
242 return (a[1] << 8) | a[0];
245 static inline void WPA_PUT_LE16(u8 *a, u16 val)
251 static inline u32 WPA_GET_BE24(const u8 *a)
253 return (a[0] << 16) | (a[1] << 8) | a[2];
256 static inline void WPA_PUT_BE24(u8 *a, u32 val)
258 a[0] = (val >> 16) & 0xff;
259 a[1] = (val >> 8) & 0xff;
263 static inline u32 WPA_GET_BE32(const u8 *a)
265 return (a[0] << 24) | (a[1] << 16) | (a[2] << 8) | a[3];
268 static inline void WPA_PUT_BE32(u8 *a, u32 val)
270 a[0] = (val >> 24) & 0xff;
271 a[1] = (val >> 16) & 0xff;
272 a[2] = (val >> 8) & 0xff;
276 static inline u32 WPA_GET_LE32(const u8 *a)
278 return (a[3] << 24) | (a[2] << 16) | (a[1] << 8) | a[0];
281 static inline void WPA_PUT_LE32(u8 *a, u32 val)
283 a[3] = (val >> 24) & 0xff;
284 a[2] = (val >> 16) & 0xff;
285 a[1] = (val >> 8) & 0xff;
289 static inline u64 WPA_GET_BE64(const u8 *a)
291 return (((u64) a[0]) << 56) | (((u64) a[1]) << 48) |
292 (((u64) a[2]) << 40) | (((u64) a[3]) << 32) |
293 (((u64) a[4]) << 24) | (((u64) a[5]) << 16) |
294 (((u64) a[6]) << 8) | ((u64) a[7]);
297 static inline void WPA_PUT_BE64(u8 *a, u64 val)
309 static inline u64 WPA_GET_LE64(const u8 *a)
311 return (((u64) a[7]) << 56) | (((u64) a[6]) << 48) |
312 (((u64) a[5]) << 40) | (((u64) a[4]) << 32) |
313 (((u64) a[3]) << 24) | (((u64) a[2]) << 16) |
314 (((u64) a[1]) << 8) | ((u64) a[0]);
317 static inline void WPA_PUT_LE64(u8 *a, u64 val)
340 #define ETH_P_ALL 0x0003
342 #ifndef ETH_P_80211_ENCAP
343 #define ETH_P_80211_ENCAP 0x890d /* TDLS comes under this category */
346 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
347 #endif /* ETH_P_PAE */
349 #define ETH_P_EAPOL ETH_P_PAE
350 #endif /* ETH_P_EAPOL */
351 #ifndef ETH_P_RSN_PREAUTH
352 #define ETH_P_RSN_PREAUTH 0x88c7
353 #endif /* ETH_P_RSN_PREAUTH */
355 #define ETH_P_RRB 0x890D
356 #endif /* ETH_P_RRB */
360 #define PRINTF_FORMAT(a,b) __attribute__ ((format (printf, (a), (b))))
361 #define STRUCT_PACKED __attribute__ ((packed))
363 #define PRINTF_FORMAT(a,b)
364 #define STRUCT_PACKED
368 #ifdef CONFIG_ANSI_C_EXTRA
370 #if !defined(_MSC_VER) || _MSC_VER < 1400
371 /* snprintf - used in number of places; sprintf() is _not_ a good replacement
372 * due to possible buffer overflow; see, e.g.,
373 * http://www.ijs.si/software/snprintf/ for portable implementation of
375 int snprintf(char *str, size_t size, const char *format, ...);
377 /* vsnprintf - only used for wpa_msg() in wpa_supplicant.c */
378 int vsnprintf(char *str, size_t size, const char *format, va_list ap);
379 #endif /* !defined(_MSC_VER) || _MSC_VER < 1400 */
381 /* getopt - only used in main.c */
382 int getopt(int argc, char *const argv[], const char *optstring);
386 #ifndef CONFIG_NO_SOCKLEN_T_TYPEDEF
387 #ifndef __socklen_t_defined
388 typedef int socklen_t;
392 /* inline - define as __inline or just define it to be empty, if needed */
393 #ifdef CONFIG_NO_INLINE
396 #define inline __inline
400 #define __func__ "__func__ not defined"
404 #define bswap_16(a) ((((u16) (a) << 8) & 0xff00) | (((u16) (a) >> 8) & 0xff))
408 #define bswap_32(a) ((((u32) (a) << 24) & 0xff000000) | \
409 (((u32) (a) << 8) & 0xff0000) | \
410 (((u32) (a) >> 8) & 0xff00) | \
411 (((u32) (a) >> 24) & 0xff))
415 #define MSG_DONTWAIT 0
419 void perror(const char *s);
420 #endif /* _WIN32_WCE */
422 #endif /* CONFIG_ANSI_C_EXTRA */
425 #define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
426 #define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
429 * Compact form for string representation of MAC address
430 * To be used, e.g., for constructing dbus paths for P2P Devices
432 #define COMPACT_MACSTR "%02x%02x%02x%02x%02x%02x"
436 #define BIT(x) (1 << (x))
440 * Definitions for sparse validation
441 * (http://kernel.org/pub/linux/kernel/people/josh/sparse/)
444 #define __force __attribute__((force))
445 #define __bitwise __attribute__((bitwise))
451 typedef u16 __bitwise be16;
452 typedef u16 __bitwise le16;
453 typedef u32 __bitwise be32;
454 typedef u32 __bitwise le32;
455 typedef u64 __bitwise be64;
456 typedef u64 __bitwise le64;
459 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
460 #define __must_check __attribute__((__warn_unused_result__))
463 #endif /* __GNUC__ */
464 #endif /* __must_check */
466 #ifndef __maybe_unused
467 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
468 #define __maybe_unused __attribute__((unused))
470 #define __maybe_unused
471 #endif /* __GNUC__ */
472 #endif /* __must_check */
474 int hwaddr_aton(const char *txt, u8 *addr);
475 int hwaddr_masked_aton(const char *txt, u8 *addr, u8 *mask, u8 maskable);
476 int hwaddr_compact_aton(const char *txt, u8 *addr);
477 int hwaddr_aton2(const char *txt, u8 *addr);
478 int hex2byte(const char *hex);
479 int hexstr2bin(const char *hex, u8 *buf, size_t len);
480 void inc_byte_array(u8 *counter, size_t len);
481 void wpa_get_ntp_timestamp(u8 *buf);
482 int wpa_scnprintf(char *buf, size_t size, const char *fmt, ...);
483 int wpa_snprintf_hex(char *buf, size_t buf_size, const u8 *data, size_t len);
484 int wpa_snprintf_hex_uppercase(char *buf, size_t buf_size, const u8 *data,
487 int hwaddr_mask_txt(char *buf, size_t len, const u8 *addr, const u8 *mask);
489 #ifdef CONFIG_NATIVE_WINDOWS
490 void wpa_unicode2ascii_inplace(TCHAR *str);
491 TCHAR * wpa_strdup_tchar(const char *str);
492 #else /* CONFIG_NATIVE_WINDOWS */
493 #define wpa_unicode2ascii_inplace(s) do { } while (0)
494 #define wpa_strdup_tchar(s) strdup((s))
495 #endif /* CONFIG_NATIVE_WINDOWS */
497 void printf_encode(char *txt, size_t maxlen, const u8 *data, size_t len);
498 size_t printf_decode(u8 *buf, size_t maxlen, const char *str);
500 const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len);
502 char * wpa_config_parse_string(const char *value, size_t *len);
503 int is_hex(const u8 *data, size_t len);
504 size_t merge_byte_arrays(u8 *res, size_t res_len,
505 const u8 *src1, size_t src1_len,
506 const u8 *src2, size_t src2_len);
507 char * dup_binstr(const void *src, size_t len);
509 static inline int is_zero_ether_addr(const u8 *a)
511 return !(a[0] | a[1] | a[2] | a[3] | a[4] | a[5]);
514 static inline int is_broadcast_ether_addr(const u8 *a)
516 return (a[0] & a[1] & a[2] & a[3] & a[4] & a[5]) == 0xff;
519 #define broadcast_ether_addr (const u8 *) "\xff\xff\xff\xff\xff\xff"
521 #include "wpa_debug.h"
524 struct wpa_freq_range_list {
525 struct wpa_freq_range {
532 int freq_range_list_parse(struct wpa_freq_range_list *res, const char *value);
533 int freq_range_list_includes(const struct wpa_freq_range_list *list,
535 char * freq_range_list_str(const struct wpa_freq_range_list *list);
537 int int_array_len(const int *a);
538 void int_array_concat(int **res, const int *a);
539 void int_array_sort_unique(int *a);
540 void int_array_add_unique(int **res, int a);
542 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
544 void str_clear_free(char *str);
545 void bin_clear_free(void *bin, size_t len);
547 int random_mac_addr(u8 *addr);
548 int random_mac_addr_keep_oui(u8 *addr);
550 char * str_token(char *str, const char *delim, char **context);
551 size_t utf8_escape(const char *inp, size_t in_size,
552 char *outp, size_t out_size);
553 size_t utf8_unescape(const char *inp, size_t in_size,
554 char *outp, size_t out_size);
558 * gcc 4.4 ends up generating strict-aliasing warnings about some very common
559 * networking socket uses that do not really result in a real problem and
560 * cannot be easily avoided with union-based type-punning due to struct
561 * definitions including another struct in system header files. To avoid having
562 * to fully disable strict-aliasing warnings, provide a mechanism to hide the
563 * typecast from aliasing for now. A cleaner solution will hopefully be found
564 * in the future to handle these cases.
566 void * __hide_aliasing_typecast(void *foo);
567 #define aliasing_hide_typecast(a,t) (t *) __hide_aliasing_typecast((a))
569 #ifdef CONFIG_VALGRIND
570 #include <valgrind/memcheck.h>
571 #define WPA_MEM_DEFINED(ptr, len) VALGRIND_MAKE_MEM_DEFINED((ptr), (len))
572 #else /* CONFIG_VALGRIND */
573 #define WPA_MEM_DEFINED(ptr, len) do { } while (0)
574 #endif /* CONFIG_VALGRIND */
576 #endif /* COMMON_H */