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_NATIVE_WINDOWS
64 typedef int socklen_t;
67 #define MSG_DONTWAIT 0 /* not supported */
70 #endif /* CONFIG_NATIVE_WINDOWS */
74 #define inline __inline
78 #define vsnprintf _vsnprintf
80 #define close closesocket
84 /* Define platform specific integer types */
95 #define WPA_TYPES_DEFINED
99 typedef unsigned long long u64;
103 typedef long long s64;
107 #define WPA_TYPES_DEFINED
108 #endif /* __vxworks */
110 #ifndef WPA_TYPES_DEFINED
111 #ifdef CONFIG_USE_INTTYPES_H
112 #include <inttypes.h>
116 typedef uint64_t u64;
117 typedef uint32_t u32;
118 typedef uint16_t u16;
124 #define WPA_TYPES_DEFINED
125 #endif /* !WPA_TYPES_DEFINED */
128 /* Define platform specific byte swapping macros */
130 #if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS)
132 static inline unsigned short wpa_swap_16(unsigned short v)
134 return ((v & 0xff) << 8) | (v >> 8);
137 static inline unsigned int wpa_swap_32(unsigned int v)
139 return ((v & 0xff) << 24) | ((v & 0xff00) << 8) |
140 ((v & 0xff0000) >> 8) | (v >> 24);
143 #define le_to_host16(n) (n)
144 #define host_to_le16(n) (n)
145 #define be_to_host16(n) wpa_swap_16(n)
146 #define host_to_be16(n) wpa_swap_16(n)
147 #define le_to_host32(n) (n)
148 #define host_to_le32(n) (n)
149 #define be_to_host32(n) wpa_swap_32(n)
150 #define host_to_be32(n) wpa_swap_32(n)
152 #define WPA_BYTE_SWAP_DEFINED
154 #endif /* __CYGWIN__ || CONFIG_NATIVE_WINDOWS */
157 #ifndef WPA_BYTE_SWAP_DEFINED
160 #ifndef __LITTLE_ENDIAN
162 #define __LITTLE_ENDIAN 1234
163 #define __BIG_ENDIAN 4321
165 #define __BYTE_ORDER __BIG_ENDIAN
167 #endif /* __BIG_ENDIAN */
168 #endif /* __LITTLE_ENDIAN */
169 #endif /* __BYTE_ORDER */
171 #if __BYTE_ORDER == __LITTLE_ENDIAN
172 #define le_to_host16(n) ((__force u16) (le16) (n))
173 #define host_to_le16(n) ((__force le16) (u16) (n))
174 #define be_to_host16(n) bswap_16((__force u16) (be16) (n))
175 #define host_to_be16(n) ((__force be16) bswap_16((n)))
176 #define le_to_host32(n) ((__force u32) (le32) (n))
177 #define host_to_le32(n) ((__force le32) (u32) (n))
178 #define be_to_host32(n) bswap_32((__force u32) (be32) (n))
179 #define host_to_be32(n) ((__force be32) bswap_32((n)))
180 #define le_to_host64(n) ((__force u64) (le64) (n))
181 #define host_to_le64(n) ((__force le64) (u64) (n))
182 #define be_to_host64(n) bswap_64((__force u64) (be64) (n))
183 #define host_to_be64(n) ((__force be64) bswap_64((n)))
184 #elif __BYTE_ORDER == __BIG_ENDIAN
185 #define le_to_host16(n) bswap_16(n)
186 #define host_to_le16(n) bswap_16(n)
187 #define be_to_host16(n) (n)
188 #define host_to_be16(n) (n)
189 #define le_to_host32(n) bswap_32(n)
190 #define host_to_le32(n) bswap_32(n)
191 #define be_to_host32(n) (n)
192 #define host_to_be32(n) (n)
193 #define le_to_host64(n) bswap_64(n)
194 #define host_to_le64(n) bswap_64(n)
195 #define be_to_host64(n) (n)
196 #define host_to_be64(n) (n)
197 #ifndef WORDS_BIGENDIAN
198 #define WORDS_BIGENDIAN
201 #error Could not determine CPU byte order
204 #define WPA_BYTE_SWAP_DEFINED
205 #endif /* !WPA_BYTE_SWAP_DEFINED */
208 /* Macros for handling unaligned memory accesses */
210 static inline u16 WPA_GET_BE16(const u8 *a)
212 return (a[0] << 8) | a[1];
215 static inline void WPA_PUT_BE16(u8 *a, u16 val)
221 static inline u16 WPA_GET_LE16(const u8 *a)
223 return (a[1] << 8) | a[0];
226 static inline void WPA_PUT_LE16(u8 *a, u16 val)
232 static inline u32 WPA_GET_BE24(const u8 *a)
234 return (a[0] << 16) | (a[1] << 8) | a[2];
237 static inline void WPA_PUT_BE24(u8 *a, u32 val)
239 a[0] = (val >> 16) & 0xff;
240 a[1] = (val >> 8) & 0xff;
244 static inline u32 WPA_GET_BE32(const u8 *a)
246 return ((u32) a[0] << 24) | (a[1] << 16) | (a[2] << 8) | a[3];
249 static inline void WPA_PUT_BE32(u8 *a, u32 val)
251 a[0] = (val >> 24) & 0xff;
252 a[1] = (val >> 16) & 0xff;
253 a[2] = (val >> 8) & 0xff;
257 static inline u32 WPA_GET_LE32(const u8 *a)
259 return ((u32) a[3] << 24) | (a[2] << 16) | (a[1] << 8) | a[0];
262 static inline void WPA_PUT_LE32(u8 *a, u32 val)
264 a[3] = (val >> 24) & 0xff;
265 a[2] = (val >> 16) & 0xff;
266 a[1] = (val >> 8) & 0xff;
270 static inline u64 WPA_GET_BE64(const u8 *a)
272 return (((u64) a[0]) << 56) | (((u64) a[1]) << 48) |
273 (((u64) a[2]) << 40) | (((u64) a[3]) << 32) |
274 (((u64) a[4]) << 24) | (((u64) a[5]) << 16) |
275 (((u64) a[6]) << 8) | ((u64) a[7]);
278 static inline void WPA_PUT_BE64(u8 *a, u64 val)
290 static inline u64 WPA_GET_LE64(const u8 *a)
292 return (((u64) a[7]) << 56) | (((u64) a[6]) << 48) |
293 (((u64) a[5]) << 40) | (((u64) a[4]) << 32) |
294 (((u64) a[3]) << 24) | (((u64) a[2]) << 16) |
295 (((u64) a[1]) << 8) | ((u64) a[0]);
298 static inline void WPA_PUT_LE64(u8 *a, u64 val)
321 #define ETH_P_ALL 0x0003
323 #ifndef ETH_P_80211_ENCAP
324 #define ETH_P_80211_ENCAP 0x890d /* TDLS comes under this category */
327 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
328 #endif /* ETH_P_PAE */
330 #define ETH_P_EAPOL ETH_P_PAE
331 #endif /* ETH_P_EAPOL */
332 #ifndef ETH_P_RSN_PREAUTH
333 #define ETH_P_RSN_PREAUTH 0x88c7
334 #endif /* ETH_P_RSN_PREAUTH */
336 #define ETH_P_RRB 0x890D
337 #endif /* ETH_P_RRB */
341 #define PRINTF_FORMAT(a,b) __attribute__ ((format (printf, (a), (b))))
342 #define STRUCT_PACKED __attribute__ ((packed))
343 #define UNUSED __attribute__ ((unused))
345 #define PRINTF_FORMAT(a,b)
346 #define STRUCT_PACKED
351 #ifdef CONFIG_ANSI_C_EXTRA
353 #if !defined(_MSC_VER) || _MSC_VER < 1400
354 /* snprintf - used in number of places; sprintf() is _not_ a good replacement
355 * due to possible buffer overflow; see, e.g.,
356 * http://www.ijs.si/software/snprintf/ for portable implementation of
358 int snprintf(char *str, size_t size, const char *format, ...);
360 /* vsnprintf - only used for wpa_msg() in wpa_supplicant.c */
361 int vsnprintf(char *str, size_t size, const char *format, va_list ap);
362 #endif /* !defined(_MSC_VER) || _MSC_VER < 1400 */
364 /* getopt - only used in main.c */
365 int getopt(int argc, char *const argv[], const char *optstring);
369 #ifndef CONFIG_NO_SOCKLEN_T_TYPEDEF
370 #ifndef __socklen_t_defined
371 typedef int socklen_t;
375 /* inline - define as __inline or just define it to be empty, if needed */
376 #ifdef CONFIG_NO_INLINE
379 #define inline __inline
383 #define __func__ "__func__ not defined"
387 #define bswap_16(a) ((((u16) (a) << 8) & 0xff00) | (((u16) (a) >> 8) & 0xff))
391 #define bswap_32(a) ((((u32) (a) << 24) & 0xff000000) | \
392 (((u32) (a) << 8) & 0xff0000) | \
393 (((u32) (a) >> 8) & 0xff00) | \
394 (((u32) (a) >> 24) & 0xff))
398 #define MSG_DONTWAIT 0
402 void perror(const char *s);
403 #endif /* _WIN32_WCE */
405 #endif /* CONFIG_ANSI_C_EXTRA */
408 #define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
409 #define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
412 * Compact form for string representation of MAC address
413 * To be used, e.g., for constructing dbus paths for P2P Devices
415 #define COMPACT_MACSTR "%02x%02x%02x%02x%02x%02x"
419 #define BIT(x) (1U << (x))
423 * Definitions for sparse validation
424 * (http://kernel.org/pub/linux/kernel/people/josh/sparse/)
427 #define __force __attribute__((force))
428 #define __bitwise __attribute__((bitwise))
434 typedef u16 __bitwise be16;
435 typedef u16 __bitwise le16;
436 typedef u32 __bitwise be32;
437 typedef u32 __bitwise le32;
438 typedef u64 __bitwise be64;
439 typedef u64 __bitwise le64;
442 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
443 #define __must_check __attribute__((__warn_unused_result__))
446 #endif /* __GNUC__ */
447 #endif /* __must_check */
449 #ifndef __maybe_unused
450 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
451 #define __maybe_unused __attribute__((unused))
453 #define __maybe_unused
454 #endif /* __GNUC__ */
455 #endif /* __must_check */
457 int hwaddr_aton(const char *txt, u8 *addr);
458 int hwaddr_masked_aton(const char *txt, u8 *addr, u8 *mask, u8 maskable);
459 int hwaddr_compact_aton(const char *txt, u8 *addr);
460 int hwaddr_aton2(const char *txt, u8 *addr);
461 int hex2byte(const char *hex);
462 int hexstr2bin(const char *hex, u8 *buf, size_t len);
463 void inc_byte_array(u8 *counter, size_t len);
464 void wpa_get_ntp_timestamp(u8 *buf);
465 int wpa_scnprintf(char *buf, size_t size, const char *fmt, ...);
466 int wpa_snprintf_hex_sep(char *buf, size_t buf_size, const u8 *data, size_t len,
468 int wpa_snprintf_hex(char *buf, size_t buf_size, const u8 *data, size_t len);
469 int wpa_snprintf_hex_uppercase(char *buf, size_t buf_size, const u8 *data,
472 int hwaddr_mask_txt(char *buf, size_t len, const u8 *addr, const u8 *mask);
474 #ifdef CONFIG_NATIVE_WINDOWS
475 void wpa_unicode2ascii_inplace(TCHAR *str);
476 TCHAR * wpa_strdup_tchar(const char *str);
477 #else /* CONFIG_NATIVE_WINDOWS */
478 #define wpa_unicode2ascii_inplace(s) do { } while (0)
479 #define wpa_strdup_tchar(s) strdup((s))
480 #endif /* CONFIG_NATIVE_WINDOWS */
482 void printf_encode(char *txt, size_t maxlen, const u8 *data, size_t len);
483 size_t printf_decode(u8 *buf, size_t maxlen, const char *str);
485 const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len);
487 char * wpa_config_parse_string(const char *value, size_t *len);
488 int is_hex(const u8 *data, size_t len);
489 size_t merge_byte_arrays(u8 *res, size_t res_len,
490 const u8 *src1, size_t src1_len,
491 const u8 *src2, size_t src2_len);
492 char * dup_binstr(const void *src, size_t len);
494 static inline int is_zero_ether_addr(const u8 *a)
496 return !(a[0] | a[1] | a[2] | a[3] | a[4] | a[5]);
499 static inline int is_broadcast_ether_addr(const u8 *a)
501 return (a[0] & a[1] & a[2] & a[3] & a[4] & a[5]) == 0xff;
504 static inline int is_multicast_ether_addr(const u8 *a)
509 #define broadcast_ether_addr (const u8 *) "\xff\xff\xff\xff\xff\xff"
511 #include "wpa_debug.h"
514 struct wpa_freq_range_list {
515 struct wpa_freq_range {
522 int freq_range_list_parse(struct wpa_freq_range_list *res, const char *value);
523 int freq_range_list_includes(const struct wpa_freq_range_list *list,
525 char * freq_range_list_str(const struct wpa_freq_range_list *list);
527 int int_array_len(const int *a);
528 void int_array_concat(int **res, const int *a);
529 void int_array_sort_unique(int *a);
530 void int_array_add_unique(int **res, int a);
532 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
534 void str_clear_free(char *str);
535 void bin_clear_free(void *bin, size_t len);
537 int random_mac_addr(u8 *addr);
538 int random_mac_addr_keep_oui(u8 *addr);
540 const char * cstr_token(const char *str, const char *delim, const char **last);
541 char * str_token(char *str, const char *delim, char **context);
542 size_t utf8_escape(const char *inp, size_t in_size,
543 char *outp, size_t out_size);
544 size_t utf8_unescape(const char *inp, size_t in_size,
545 char *outp, size_t out_size);
546 int is_ctrl_char(char c);
550 * gcc 4.4 ends up generating strict-aliasing warnings about some very common
551 * networking socket uses that do not really result in a real problem and
552 * cannot be easily avoided with union-based type-punning due to struct
553 * definitions including another struct in system header files. To avoid having
554 * to fully disable strict-aliasing warnings, provide a mechanism to hide the
555 * typecast from aliasing for now. A cleaner solution will hopefully be found
556 * in the future to handle these cases.
558 void * __hide_aliasing_typecast(void *foo);
559 #define aliasing_hide_typecast(a,t) (t *) __hide_aliasing_typecast((a))
561 #ifdef CONFIG_VALGRIND
562 #include <valgrind/memcheck.h>
563 #define WPA_MEM_DEFINED(ptr, len) VALGRIND_MAKE_MEM_DEFINED((ptr), (len))
564 #else /* CONFIG_VALGRIND */
565 #define WPA_MEM_DEFINED(ptr, len) do { } while (0)
566 #endif /* CONFIG_VALGRIND */
568 #endif /* COMMON_H */