1189251Ssam/* 2189251Ssam * wpa_supplicant/hostapd / common helper functions, etc. 3189251Ssam * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi> 4189251Ssam * 5252726Srpaulo * This software may be distributed under the terms of the BSD license. 6252726Srpaulo * See README for more details. 7189251Ssam */ 8189251Ssam 9189251Ssam#ifndef COMMON_H 10189251Ssam#define COMMON_H 11189251Ssam 12189251Ssam#include "os.h" 13189251Ssam 14214734Srpaulo#if defined(__linux__) || defined(__GLIBC__) 15189251Ssam#include <endian.h> 16189251Ssam#include <byteswap.h> 17189251Ssam#endif /* __linux__ */ 18189251Ssam 19209158Srpaulo#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \ 20209158Srpaulo defined(__OpenBSD__) 21189251Ssam#include <sys/types.h> 22189251Ssam#include <sys/endian.h> 23189251Ssam#define __BYTE_ORDER _BYTE_ORDER 24189251Ssam#define __LITTLE_ENDIAN _LITTLE_ENDIAN 25189251Ssam#define __BIG_ENDIAN _BIG_ENDIAN 26209158Srpaulo#ifdef __OpenBSD__ 27209158Srpaulo#define bswap_16 swap16 28209158Srpaulo#define bswap_32 swap32 29209158Srpaulo#define bswap_64 swap64 30209158Srpaulo#else /* __OpenBSD__ */ 31189251Ssam#define bswap_16 bswap16 32189251Ssam#define bswap_32 bswap32 33189251Ssam#define bswap_64 bswap64 34209158Srpaulo#endif /* __OpenBSD__ */ 35189251Ssam#endif /* defined(__FreeBSD__) || defined(__NetBSD__) || 36209158Srpaulo * defined(__DragonFly__) || defined(__OpenBSD__) */ 37189251Ssam 38189251Ssam#ifdef __APPLE__ 39189251Ssam#include <sys/types.h> 40189251Ssam#include <machine/endian.h> 41189251Ssam#define __BYTE_ORDER _BYTE_ORDER 42189251Ssam#define __LITTLE_ENDIAN _LITTLE_ENDIAN 43189251Ssam#define __BIG_ENDIAN _BIG_ENDIAN 44189251Ssamstatic inline unsigned short bswap_16(unsigned short v) 45189251Ssam{ 46189251Ssam return ((v & 0xff) << 8) | (v >> 8); 47189251Ssam} 48189251Ssam 49189251Ssamstatic inline unsigned int bswap_32(unsigned int v) 50189251Ssam{ 51189251Ssam return ((v & 0xff) << 24) | ((v & 0xff00) << 8) | 52189251Ssam ((v & 0xff0000) >> 8) | (v >> 24); 53189251Ssam} 54189251Ssam#endif /* __APPLE__ */ 55189251Ssam 56346981Scy#ifdef __rtems__ 57346981Scy#include <rtems/endian.h> 58346981Scy#define __BYTE_ORDER BYTE_ORDER 59346981Scy#define __LITTLE_ENDIAN LITTLE_ENDIAN 60346981Scy#define __BIG_ENDIAN BIG_ENDIAN 61346981Scy#define bswap_16 CPU_swap_u16 62346981Scy#define bswap_32 CPU_swap_u32 63346981Scy#endif /* __rtems__ */ 64346981Scy 65189251Ssam#ifdef CONFIG_NATIVE_WINDOWS 66189251Ssam#include <winsock.h> 67189251Ssam 68189251Ssamtypedef int socklen_t; 69189251Ssam 70189251Ssam#ifndef MSG_DONTWAIT 71189251Ssam#define MSG_DONTWAIT 0 /* not supported */ 72189251Ssam#endif 73189251Ssam 74189251Ssam#endif /* CONFIG_NATIVE_WINDOWS */ 75189251Ssam 76189251Ssam#ifdef _MSC_VER 77189251Ssam#define inline __inline 78189251Ssam 79189251Ssam#undef vsnprintf 80189251Ssam#define vsnprintf _vsnprintf 81189251Ssam#undef close 82189251Ssam#define close closesocket 83189251Ssam#endif /* _MSC_VER */ 84189251Ssam 85189251Ssam 86189251Ssam/* Define platform specific integer types */ 87189251Ssam 88189251Ssam#ifdef _MSC_VER 89189251Ssamtypedef UINT64 u64; 90189251Ssamtypedef UINT32 u32; 91189251Ssamtypedef UINT16 u16; 92189251Ssamtypedef UINT8 u8; 93189251Ssamtypedef INT64 s64; 94189251Ssamtypedef INT32 s32; 95189251Ssamtypedef INT16 s16; 96189251Ssamtypedef INT8 s8; 97189251Ssam#define WPA_TYPES_DEFINED 98189251Ssam#endif /* _MSC_VER */ 99189251Ssam 100189251Ssam#ifdef __vxworks 101189251Ssamtypedef unsigned long long u64; 102189251Ssamtypedef UINT32 u32; 103189251Ssamtypedef UINT16 u16; 104189251Ssamtypedef UINT8 u8; 105189251Ssamtypedef long long s64; 106189251Ssamtypedef INT32 s32; 107189251Ssamtypedef INT16 s16; 108189251Ssamtypedef INT8 s8; 109189251Ssam#define WPA_TYPES_DEFINED 110189251Ssam#endif /* __vxworks */ 111189251Ssam 112189251Ssam#ifndef WPA_TYPES_DEFINED 113189251Ssam#ifdef CONFIG_USE_INTTYPES_H 114189251Ssam#include <inttypes.h> 115189251Ssam#else 116189251Ssam#include <stdint.h> 117189251Ssam#endif 118189251Ssamtypedef uint64_t u64; 119189251Ssamtypedef uint32_t u32; 120189251Ssamtypedef uint16_t u16; 121189251Ssamtypedef uint8_t u8; 122189251Ssamtypedef int64_t s64; 123189251Ssamtypedef int32_t s32; 124189251Ssamtypedef int16_t s16; 125189251Ssamtypedef int8_t s8; 126189251Ssam#define WPA_TYPES_DEFINED 127189251Ssam#endif /* !WPA_TYPES_DEFINED */ 128189251Ssam 129189251Ssam 130189251Ssam/* Define platform specific byte swapping macros */ 131189251Ssam 132189251Ssam#if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS) 133189251Ssam 134189251Ssamstatic inline unsigned short wpa_swap_16(unsigned short v) 135189251Ssam{ 136189251Ssam return ((v & 0xff) << 8) | (v >> 8); 137189251Ssam} 138189251Ssam 139189251Ssamstatic inline unsigned int wpa_swap_32(unsigned int v) 140189251Ssam{ 141189251Ssam return ((v & 0xff) << 24) | ((v & 0xff00) << 8) | 142189251Ssam ((v & 0xff0000) >> 8) | (v >> 24); 143189251Ssam} 144189251Ssam 145189251Ssam#define le_to_host16(n) (n) 146189251Ssam#define host_to_le16(n) (n) 147189251Ssam#define be_to_host16(n) wpa_swap_16(n) 148189251Ssam#define host_to_be16(n) wpa_swap_16(n) 149189251Ssam#define le_to_host32(n) (n) 150281806Srpaulo#define host_to_le32(n) (n) 151189251Ssam#define be_to_host32(n) wpa_swap_32(n) 152189251Ssam#define host_to_be32(n) wpa_swap_32(n) 153346981Scy#define host_to_le64(n) (n) 154189251Ssam 155189251Ssam#define WPA_BYTE_SWAP_DEFINED 156189251Ssam 157189251Ssam#endif /* __CYGWIN__ || CONFIG_NATIVE_WINDOWS */ 158189251Ssam 159189251Ssam 160189251Ssam#ifndef WPA_BYTE_SWAP_DEFINED 161189251Ssam 162189251Ssam#ifndef __BYTE_ORDER 163189251Ssam#ifndef __LITTLE_ENDIAN 164189251Ssam#ifndef __BIG_ENDIAN 165189251Ssam#define __LITTLE_ENDIAN 1234 166189251Ssam#define __BIG_ENDIAN 4321 167189251Ssam#if defined(sparc) 168189251Ssam#define __BYTE_ORDER __BIG_ENDIAN 169189251Ssam#endif 170189251Ssam#endif /* __BIG_ENDIAN */ 171189251Ssam#endif /* __LITTLE_ENDIAN */ 172189251Ssam#endif /* __BYTE_ORDER */ 173189251Ssam 174189251Ssam#if __BYTE_ORDER == __LITTLE_ENDIAN 175189251Ssam#define le_to_host16(n) ((__force u16) (le16) (n)) 176189251Ssam#define host_to_le16(n) ((__force le16) (u16) (n)) 177189251Ssam#define be_to_host16(n) bswap_16((__force u16) (be16) (n)) 178189251Ssam#define host_to_be16(n) ((__force be16) bswap_16((n))) 179189251Ssam#define le_to_host32(n) ((__force u32) (le32) (n)) 180189251Ssam#define host_to_le32(n) ((__force le32) (u32) (n)) 181189251Ssam#define be_to_host32(n) bswap_32((__force u32) (be32) (n)) 182189251Ssam#define host_to_be32(n) ((__force be32) bswap_32((n))) 183189251Ssam#define le_to_host64(n) ((__force u64) (le64) (n)) 184189251Ssam#define host_to_le64(n) ((__force le64) (u64) (n)) 185189251Ssam#define be_to_host64(n) bswap_64((__force u64) (be64) (n)) 186189251Ssam#define host_to_be64(n) ((__force be64) bswap_64((n))) 187189251Ssam#elif __BYTE_ORDER == __BIG_ENDIAN 188189251Ssam#define le_to_host16(n) bswap_16(n) 189189251Ssam#define host_to_le16(n) bswap_16(n) 190189251Ssam#define be_to_host16(n) (n) 191189251Ssam#define host_to_be16(n) (n) 192189251Ssam#define le_to_host32(n) bswap_32(n) 193281806Srpaulo#define host_to_le32(n) bswap_32(n) 194189251Ssam#define be_to_host32(n) (n) 195189251Ssam#define host_to_be32(n) (n) 196189251Ssam#define le_to_host64(n) bswap_64(n) 197189251Ssam#define host_to_le64(n) bswap_64(n) 198189251Ssam#define be_to_host64(n) (n) 199189251Ssam#define host_to_be64(n) (n) 200189251Ssam#ifndef WORDS_BIGENDIAN 201189251Ssam#define WORDS_BIGENDIAN 202189251Ssam#endif 203189251Ssam#else 204189251Ssam#error Could not determine CPU byte order 205189251Ssam#endif 206189251Ssam 207189251Ssam#define WPA_BYTE_SWAP_DEFINED 208189251Ssam#endif /* !WPA_BYTE_SWAP_DEFINED */ 209189251Ssam 210189251Ssam 211189251Ssam/* Macros for handling unaligned memory accesses */ 212189251Ssam 213281806Srpaulostatic inline u16 WPA_GET_BE16(const u8 *a) 214281806Srpaulo{ 215281806Srpaulo return (a[0] << 8) | a[1]; 216281806Srpaulo} 217189251Ssam 218281806Srpaulostatic inline void WPA_PUT_BE16(u8 *a, u16 val) 219281806Srpaulo{ 220281806Srpaulo a[0] = val >> 8; 221281806Srpaulo a[1] = val & 0xff; 222281806Srpaulo} 223189251Ssam 224281806Srpaulostatic inline u16 WPA_GET_LE16(const u8 *a) 225281806Srpaulo{ 226281806Srpaulo return (a[1] << 8) | a[0]; 227281806Srpaulo} 228189251Ssam 229281806Srpaulostatic inline void WPA_PUT_LE16(u8 *a, u16 val) 230281806Srpaulo{ 231281806Srpaulo a[1] = val >> 8; 232281806Srpaulo a[0] = val & 0xff; 233281806Srpaulo} 234189251Ssam 235281806Srpaulostatic inline u32 WPA_GET_BE24(const u8 *a) 236281806Srpaulo{ 237281806Srpaulo return (a[0] << 16) | (a[1] << 8) | a[2]; 238281806Srpaulo} 239189251Ssam 240281806Srpaulostatic inline void WPA_PUT_BE24(u8 *a, u32 val) 241281806Srpaulo{ 242281806Srpaulo a[0] = (val >> 16) & 0xff; 243281806Srpaulo a[1] = (val >> 8) & 0xff; 244281806Srpaulo a[2] = val & 0xff; 245281806Srpaulo} 246189251Ssam 247281806Srpaulostatic inline u32 WPA_GET_BE32(const u8 *a) 248281806Srpaulo{ 249289549Srpaulo return ((u32) a[0] << 24) | (a[1] << 16) | (a[2] << 8) | a[3]; 250281806Srpaulo} 251189251Ssam 252281806Srpaulostatic inline void WPA_PUT_BE32(u8 *a, u32 val) 253281806Srpaulo{ 254281806Srpaulo a[0] = (val >> 24) & 0xff; 255281806Srpaulo a[1] = (val >> 16) & 0xff; 256281806Srpaulo a[2] = (val >> 8) & 0xff; 257281806Srpaulo a[3] = val & 0xff; 258281806Srpaulo} 259189251Ssam 260281806Srpaulostatic inline u32 WPA_GET_LE32(const u8 *a) 261281806Srpaulo{ 262289549Srpaulo return ((u32) a[3] << 24) | (a[2] << 16) | (a[1] << 8) | a[0]; 263281806Srpaulo} 264281806Srpaulo 265281806Srpaulostatic inline void WPA_PUT_LE32(u8 *a, u32 val) 266281806Srpaulo{ 267281806Srpaulo a[3] = (val >> 24) & 0xff; 268281806Srpaulo a[2] = (val >> 16) & 0xff; 269281806Srpaulo a[1] = (val >> 8) & 0xff; 270281806Srpaulo a[0] = val & 0xff; 271281806Srpaulo} 272281806Srpaulo 273281806Srpaulostatic inline u64 WPA_GET_BE64(const u8 *a) 274281806Srpaulo{ 275281806Srpaulo return (((u64) a[0]) << 56) | (((u64) a[1]) << 48) | 276281806Srpaulo (((u64) a[2]) << 40) | (((u64) a[3]) << 32) | 277281806Srpaulo (((u64) a[4]) << 24) | (((u64) a[5]) << 16) | 278281806Srpaulo (((u64) a[6]) << 8) | ((u64) a[7]); 279281806Srpaulo} 280281806Srpaulo 281281806Srpaulostatic inline void WPA_PUT_BE64(u8 *a, u64 val) 282281806Srpaulo{ 283281806Srpaulo a[0] = val >> 56; 284281806Srpaulo a[1] = val >> 48; 285281806Srpaulo a[2] = val >> 40; 286281806Srpaulo a[3] = val >> 32; 287281806Srpaulo a[4] = val >> 24; 288281806Srpaulo a[5] = val >> 16; 289281806Srpaulo a[6] = val >> 8; 290281806Srpaulo a[7] = val & 0xff; 291281806Srpaulo} 292281806Srpaulo 293281806Srpaulostatic inline u64 WPA_GET_LE64(const u8 *a) 294281806Srpaulo{ 295281806Srpaulo return (((u64) a[7]) << 56) | (((u64) a[6]) << 48) | 296281806Srpaulo (((u64) a[5]) << 40) | (((u64) a[4]) << 32) | 297281806Srpaulo (((u64) a[3]) << 24) | (((u64) a[2]) << 16) | 298281806Srpaulo (((u64) a[1]) << 8) | ((u64) a[0]); 299281806Srpaulo} 300281806Srpaulo 301281806Srpaulostatic inline void WPA_PUT_LE64(u8 *a, u64 val) 302281806Srpaulo{ 303281806Srpaulo a[7] = val >> 56; 304281806Srpaulo a[6] = val >> 48; 305281806Srpaulo a[5] = val >> 40; 306281806Srpaulo a[4] = val >> 32; 307281806Srpaulo a[3] = val >> 24; 308281806Srpaulo a[2] = val >> 16; 309281806Srpaulo a[1] = val >> 8; 310281806Srpaulo a[0] = val & 0xff; 311281806Srpaulo} 312281806Srpaulo 313281806Srpaulo 314189251Ssam#ifndef ETH_ALEN 315189251Ssam#define ETH_ALEN 6 316189251Ssam#endif 317281806Srpaulo#ifndef ETH_HLEN 318281806Srpaulo#define ETH_HLEN 14 319281806Srpaulo#endif 320214734Srpaulo#ifndef IFNAMSIZ 321214734Srpaulo#define IFNAMSIZ 16 322214734Srpaulo#endif 323214734Srpaulo#ifndef ETH_P_ALL 324214734Srpaulo#define ETH_P_ALL 0x0003 325214734Srpaulo#endif 326337817Scy#ifndef ETH_P_IP 327337817Scy#define ETH_P_IP 0x0800 328337817Scy#endif 329252726Srpaulo#ifndef ETH_P_80211_ENCAP 330252726Srpaulo#define ETH_P_80211_ENCAP 0x890d /* TDLS comes under this category */ 331252726Srpaulo#endif 332214734Srpaulo#ifndef ETH_P_PAE 333214734Srpaulo#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ 334214734Srpaulo#endif /* ETH_P_PAE */ 335214734Srpaulo#ifndef ETH_P_EAPOL 336214734Srpaulo#define ETH_P_EAPOL ETH_P_PAE 337214734Srpaulo#endif /* ETH_P_EAPOL */ 338214734Srpaulo#ifndef ETH_P_RSN_PREAUTH 339214734Srpaulo#define ETH_P_RSN_PREAUTH 0x88c7 340214734Srpaulo#endif /* ETH_P_RSN_PREAUTH */ 341214734Srpaulo#ifndef ETH_P_RRB 342214734Srpaulo#define ETH_P_RRB 0x890D 343214734Srpaulo#endif /* ETH_P_RRB */ 344346981Scy#ifndef ETH_P_OUI 345346981Scy#define ETH_P_OUI 0x88B7 346346981Scy#endif /* ETH_P_OUI */ 347189251Ssam 348189251Ssam 349189251Ssam#ifdef __GNUC__ 350189251Ssam#define PRINTF_FORMAT(a,b) __attribute__ ((format (printf, (a), (b)))) 351189251Ssam#define STRUCT_PACKED __attribute__ ((packed)) 352189251Ssam#else 353189251Ssam#define PRINTF_FORMAT(a,b) 354189251Ssam#define STRUCT_PACKED 355189251Ssam#endif 356189251Ssam 357189251Ssam 358189251Ssam#ifdef CONFIG_ANSI_C_EXTRA 359189251Ssam 360189251Ssam#if !defined(_MSC_VER) || _MSC_VER < 1400 361189251Ssam/* snprintf - used in number of places; sprintf() is _not_ a good replacement 362189251Ssam * due to possible buffer overflow; see, e.g., 363189251Ssam * http://www.ijs.si/software/snprintf/ for portable implementation of 364189251Ssam * snprintf. */ 365189251Ssamint snprintf(char *str, size_t size, const char *format, ...); 366189251Ssam 367189251Ssam/* vsnprintf - only used for wpa_msg() in wpa_supplicant.c */ 368189251Ssamint vsnprintf(char *str, size_t size, const char *format, va_list ap); 369189251Ssam#endif /* !defined(_MSC_VER) || _MSC_VER < 1400 */ 370189251Ssam 371189251Ssam/* getopt - only used in main.c */ 372189251Ssamint getopt(int argc, char *const argv[], const char *optstring); 373189251Ssamextern char *optarg; 374189251Ssamextern int optind; 375189251Ssam 376189251Ssam#ifndef CONFIG_NO_SOCKLEN_T_TYPEDEF 377189251Ssam#ifndef __socklen_t_defined 378189251Ssamtypedef int socklen_t; 379189251Ssam#endif 380189251Ssam#endif 381189251Ssam 382189251Ssam/* inline - define as __inline or just define it to be empty, if needed */ 383189251Ssam#ifdef CONFIG_NO_INLINE 384189251Ssam#define inline 385189251Ssam#else 386189251Ssam#define inline __inline 387189251Ssam#endif 388189251Ssam 389189251Ssam#ifndef __func__ 390189251Ssam#define __func__ "__func__ not defined" 391189251Ssam#endif 392189251Ssam 393189251Ssam#ifndef bswap_16 394189251Ssam#define bswap_16(a) ((((u16) (a) << 8) & 0xff00) | (((u16) (a) >> 8) & 0xff)) 395189251Ssam#endif 396189251Ssam 397189251Ssam#ifndef bswap_32 398189251Ssam#define bswap_32(a) ((((u32) (a) << 24) & 0xff000000) | \ 399189251Ssam (((u32) (a) << 8) & 0xff0000) | \ 400189251Ssam (((u32) (a) >> 8) & 0xff00) | \ 401189251Ssam (((u32) (a) >> 24) & 0xff)) 402189251Ssam#endif 403189251Ssam 404189251Ssam#ifndef MSG_DONTWAIT 405189251Ssam#define MSG_DONTWAIT 0 406189251Ssam#endif 407189251Ssam 408189251Ssam#ifdef _WIN32_WCE 409189251Ssamvoid perror(const char *s); 410189251Ssam#endif /* _WIN32_WCE */ 411189251Ssam 412189251Ssam#endif /* CONFIG_ANSI_C_EXTRA */ 413189251Ssam 414189251Ssam#ifndef MAC2STR 415189251Ssam#define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5] 416189251Ssam#define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x" 417252726Srpaulo 418252726Srpaulo/* 419252726Srpaulo * Compact form for string representation of MAC address 420252726Srpaulo * To be used, e.g., for constructing dbus paths for P2P Devices 421252726Srpaulo */ 422252726Srpaulo#define COMPACT_MACSTR "%02x%02x%02x%02x%02x%02x" 423189251Ssam#endif 424189251Ssam 425189251Ssam#ifndef BIT 426289549Srpaulo#define BIT(x) (1U << (x)) 427189251Ssam#endif 428189251Ssam 429189251Ssam/* 430189251Ssam * Definitions for sparse validation 431189251Ssam * (http://kernel.org/pub/linux/kernel/people/josh/sparse/) 432189251Ssam */ 433189251Ssam#ifdef __CHECKER__ 434189251Ssam#define __force __attribute__((force)) 435337817Scy#undef __bitwise 436189251Ssam#define __bitwise __attribute__((bitwise)) 437189251Ssam#else 438189251Ssam#define __force 439346981Scy#undef __bitwise 440189251Ssam#define __bitwise 441189251Ssam#endif 442189251Ssam 443189251Ssamtypedef u16 __bitwise be16; 444189251Ssamtypedef u16 __bitwise le16; 445189251Ssamtypedef u32 __bitwise be32; 446189251Ssamtypedef u32 __bitwise le32; 447189251Ssamtypedef u64 __bitwise be64; 448189251Ssamtypedef u64 __bitwise le64; 449189251Ssam 450189251Ssam#ifndef __must_check 451189251Ssam#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) 452189251Ssam#define __must_check __attribute__((__warn_unused_result__)) 453189251Ssam#else 454189251Ssam#define __must_check 455189251Ssam#endif /* __GNUC__ */ 456189251Ssam#endif /* __must_check */ 457189251Ssam 458281806Srpaulo#ifndef __maybe_unused 459281806Srpaulo#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) 460281806Srpaulo#define __maybe_unused __attribute__((unused)) 461281806Srpaulo#else 462281806Srpaulo#define __maybe_unused 463281806Srpaulo#endif /* __GNUC__ */ 464281806Srpaulo#endif /* __must_check */ 465281806Srpaulo 466337817Scy#define SSID_MAX_LEN 32 467337817Scy 468337817Scystruct wpa_ssid_value { 469337817Scy u8 ssid[SSID_MAX_LEN]; 470337817Scy size_t ssid_len; 471337817Scy}; 472337817Scy 473189251Ssamint hwaddr_aton(const char *txt, u8 *addr); 474281806Srpauloint hwaddr_masked_aton(const char *txt, u8 *addr, u8 *mask, u8 maskable); 475252726Srpauloint hwaddr_compact_aton(const char *txt, u8 *addr); 476214734Srpauloint hwaddr_aton2(const char *txt, u8 *addr); 477252726Srpauloint hex2byte(const char *hex); 478189251Ssamint hexstr2bin(const char *hex, u8 *buf, size_t len); 479189251Ssamvoid inc_byte_array(u8 *counter, size_t len); 480351611Scyvoid buf_shift_right(u8 *buf, size_t len, size_t bits); 481189251Ssamvoid wpa_get_ntp_timestamp(u8 *buf); 482281806Srpauloint wpa_scnprintf(char *buf, size_t size, const char *fmt, ...); 483289549Srpauloint wpa_snprintf_hex_sep(char *buf, size_t buf_size, const u8 *data, size_t len, 484289549Srpaulo char sep); 485189251Ssamint wpa_snprintf_hex(char *buf, size_t buf_size, const u8 *data, size_t len); 486189251Ssamint wpa_snprintf_hex_uppercase(char *buf, size_t buf_size, const u8 *data, 487189251Ssam size_t len); 488189251Ssam 489281806Srpauloint hwaddr_mask_txt(char *buf, size_t len, const u8 *addr, const u8 *mask); 490337817Scyint ssid_parse(const char *buf, struct wpa_ssid_value *ssid); 491281806Srpaulo 492189251Ssam#ifdef CONFIG_NATIVE_WINDOWS 493189251Ssamvoid wpa_unicode2ascii_inplace(TCHAR *str); 494189251SsamTCHAR * wpa_strdup_tchar(const char *str); 495189251Ssam#else /* CONFIG_NATIVE_WINDOWS */ 496189251Ssam#define wpa_unicode2ascii_inplace(s) do { } while (0) 497189251Ssam#define wpa_strdup_tchar(s) strdup((s)) 498189251Ssam#endif /* CONFIG_NATIVE_WINDOWS */ 499189251Ssam 500252726Srpaulovoid printf_encode(char *txt, size_t maxlen, const u8 *data, size_t len); 501252726Srpaulosize_t printf_decode(u8 *buf, size_t maxlen, const char *str); 502252726Srpaulo 503189251Ssamconst char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len); 504189251Ssam 505252726Srpaulochar * wpa_config_parse_string(const char *value, size_t *len); 506252726Srpauloint is_hex(const u8 *data, size_t len); 507337817Scyint has_ctrl_char(const u8 *data, size_t len); 508337817Scyint has_newline(const char *str); 509252726Srpaulosize_t merge_byte_arrays(u8 *res, size_t res_len, 510252726Srpaulo const u8 *src1, size_t src1_len, 511252726Srpaulo const u8 *src2, size_t src2_len); 512281806Srpaulochar * dup_binstr(const void *src, size_t len); 513252726Srpaulo 514189251Ssamstatic inline int is_zero_ether_addr(const u8 *a) 515189251Ssam{ 516189251Ssam return !(a[0] | a[1] | a[2] | a[3] | a[4] | a[5]); 517189251Ssam} 518189251Ssam 519252726Srpaulostatic inline int is_broadcast_ether_addr(const u8 *a) 520252726Srpaulo{ 521252726Srpaulo return (a[0] & a[1] & a[2] & a[3] & a[4] & a[5]) == 0xff; 522252726Srpaulo} 523252726Srpaulo 524289549Srpaulostatic inline int is_multicast_ether_addr(const u8 *a) 525289549Srpaulo{ 526289549Srpaulo return a[0] & 0x01; 527289549Srpaulo} 528289549Srpaulo 529252726Srpaulo#define broadcast_ether_addr (const u8 *) "\xff\xff\xff\xff\xff\xff" 530252726Srpaulo 531189251Ssam#include "wpa_debug.h" 532189251Ssam 533209158Srpaulo 534281806Srpaulostruct wpa_freq_range_list { 535281806Srpaulo struct wpa_freq_range { 536281806Srpaulo unsigned int min; 537281806Srpaulo unsigned int max; 538281806Srpaulo } *range; 539281806Srpaulo unsigned int num; 540281806Srpaulo}; 541281806Srpaulo 542281806Srpauloint freq_range_list_parse(struct wpa_freq_range_list *res, const char *value); 543281806Srpauloint freq_range_list_includes(const struct wpa_freq_range_list *list, 544281806Srpaulo unsigned int freq); 545281806Srpaulochar * freq_range_list_str(const struct wpa_freq_range_list *list); 546281806Srpaulo 547281806Srpauloint int_array_len(const int *a); 548281806Srpaulovoid int_array_concat(int **res, const int *a); 549281806Srpaulovoid int_array_sort_unique(int *a); 550281806Srpaulovoid int_array_add_unique(int **res, int a); 551281806Srpaulo 552281806Srpaulo#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 553281806Srpaulo 554281806Srpaulovoid str_clear_free(char *str); 555281806Srpaulovoid bin_clear_free(void *bin, size_t len); 556281806Srpaulo 557281806Srpauloint random_mac_addr(u8 *addr); 558281806Srpauloint random_mac_addr_keep_oui(u8 *addr); 559281806Srpaulo 560289549Srpauloconst char * cstr_token(const char *str, const char *delim, const char **last); 561281806Srpaulochar * str_token(char *str, const char *delim, char **context); 562281806Srpaulosize_t utf8_escape(const char *inp, size_t in_size, 563281806Srpaulo char *outp, size_t out_size); 564281806Srpaulosize_t utf8_unescape(const char *inp, size_t in_size, 565281806Srpaulo char *outp, size_t out_size); 566289549Srpauloint is_ctrl_char(char c); 567281806Srpaulo 568337817Scyint str_starts(const char *str, const char *start); 569281806Srpaulo 570346981Scyu8 rssi_to_rcpi(int rssi); 571346981Scychar * get_param(const char *cmd, const char *param); 572337817Scy 573351611Scyvoid forced_memzero(void *ptr, size_t len); 574351611Scy 575209158Srpaulo/* 576209158Srpaulo * gcc 4.4 ends up generating strict-aliasing warnings about some very common 577209158Srpaulo * networking socket uses that do not really result in a real problem and 578209158Srpaulo * cannot be easily avoided with union-based type-punning due to struct 579209158Srpaulo * definitions including another struct in system header files. To avoid having 580209158Srpaulo * to fully disable strict-aliasing warnings, provide a mechanism to hide the 581209158Srpaulo * typecast from aliasing for now. A cleaner solution will hopefully be found 582209158Srpaulo * in the future to handle these cases. 583209158Srpaulo */ 584209158Srpaulovoid * __hide_aliasing_typecast(void *foo); 585209158Srpaulo#define aliasing_hide_typecast(a,t) (t *) __hide_aliasing_typecast((a)) 586209158Srpaulo 587252726Srpaulo#ifdef CONFIG_VALGRIND 588252726Srpaulo#include <valgrind/memcheck.h> 589252726Srpaulo#define WPA_MEM_DEFINED(ptr, len) VALGRIND_MAKE_MEM_DEFINED((ptr), (len)) 590252726Srpaulo#else /* CONFIG_VALGRIND */ 591252726Srpaulo#define WPA_MEM_DEFINED(ptr, len) do { } while (0) 592252726Srpaulo#endif /* CONFIG_VALGRIND */ 593252726Srpaulo 594189251Ssam#endif /* COMMON_H */ 595