1 /* 2 * wpa_supplicant/hostapd / OS specific functions for Win32 systems 3 * Copyright (c) 2005-2006, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 #include <time.h> 11 #include <winsock2.h> 12 #include <wincrypt.h> 13 14 #include "os.h" 15 16 void os_sleep(os_time_t sec, os_time_t usec) 17 { 18 if (sec) 19 Sleep(sec * 1000); 20 if (usec) 21 Sleep(usec / 1000); 22 } 23 24 25 int os_get_time(struct os_time *t) 26 { 27 #define EPOCHFILETIME (116444736000000000ULL) 28 FILETIME ft; 29 LARGE_INTEGER li; 30 ULONGLONG tt; 31 32 #ifdef _WIN32_WCE 33 SYSTEMTIME st; 34 35 GetSystemTime(&st); 36 SystemTimeToFileTime(&st, &ft); 37 #else /* _WIN32_WCE */ 38 GetSystemTimeAsFileTime(&ft); 39 #endif /* _WIN32_WCE */ 40 li.LowPart = ft.dwLowDateTime; 41 li.HighPart = ft.dwHighDateTime; 42 tt = (li.QuadPart - EPOCHFILETIME) / 10; 43 t->sec = (os_time_t) (tt / 1000000); 44 t->usec = (os_time_t) (tt % 1000000); 45 46 return 0; 47 } 48 49 50 int os_mktime(int year, int month, int day, int hour, int min, int sec, 51 os_time_t *t) 52 { 53 struct tm tm, *tm1; 54 time_t t_local, t1, t2; 55 os_time_t tz_offset; 56 57 if (year < 1970 || month < 1 || month > 12 || day < 1 || day > 31 || 58 hour < 0 || hour > 23 || min < 0 || min > 59 || sec < 0 || 59 sec > 60) 60 return -1; 61 62 memset(&tm, 0, sizeof(tm)); 63 tm.tm_year = year - 1900; 64 tm.tm_mon = month - 1; 65 tm.tm_mday = day; 66 tm.tm_hour = hour; 67 tm.tm_min = min; 68 tm.tm_sec = sec; 69 70 t_local = mktime(&tm); 71 72 /* figure out offset to UTC */ 73 tm1 = localtime(&t_local); 74 if (tm1) { 75 t1 = mktime(tm1); 76 tm1 = gmtime(&t_local); 77 if (tm1) { 78 t2 = mktime(tm1); 79 tz_offset = t2 - t1; 80 } else 81 tz_offset = 0; 82 } else 83 tz_offset = 0; 84 85 *t = (os_time_t) t_local - tz_offset; 86 return 0; 87 } 88 89 90 int os_gmtime(os_time_t t, struct os_tm *tm) 91 { 92 struct tm *tm2; 93 time_t t2 = t; 94 95 tm2 = gmtime(&t2); 96 if (tm2 == NULL) 97 return -1; 98 tm->sec = tm2->tm_sec; 99 tm->min = tm2->tm_min; 100 tm->hour = tm2->tm_hour; 101 tm->day = tm2->tm_mday; 102 tm->month = tm2->tm_mon + 1; 103 tm->year = tm2->tm_year + 1900; 104 return 0; 105 } 106 107 108 int os_daemonize(const char *pid_file) 109 { 110 /* TODO */ 111 return -1; 112 } 113 114 115 void os_daemonize_terminate(const char *pid_file) 116 { 117 } 118 119 120 int os_get_random(unsigned char *buf, size_t len) 121 { 122 HCRYPTPROV prov; 123 BOOL ret; 124 125 if (!CryptAcquireContext(&prov, NULL, NULL, PROV_RSA_FULL, 126 CRYPT_VERIFYCONTEXT)) 127 return -1; 128 129 ret = CryptGenRandom(prov, len, buf); 130 CryptReleaseContext(prov, 0); 131 132 return ret ? 0 : -1; 133 } 134 135 136 unsigned long os_random(void) 137 { 138 return rand(); 139 } 140 141 142 char * os_rel2abs_path(const char *rel_path) 143 { 144 return _strdup(rel_path); 145 } 146 147 148 int os_program_init(void) 149 { 150 #ifdef CONFIG_NATIVE_WINDOWS 151 WSADATA wsaData; 152 if (WSAStartup(MAKEWORD(2, 0), &wsaData)) { 153 printf("Could not find a usable WinSock.dll\n"); 154 return -1; 155 } 156 #endif /* CONFIG_NATIVE_WINDOWS */ 157 return 0; 158 } 159 160 161 void os_program_deinit(void) 162 { 163 #ifdef CONFIG_NATIVE_WINDOWS 164 WSACleanup(); 165 #endif /* CONFIG_NATIVE_WINDOWS */ 166 } 167 168 169 int os_setenv(const char *name, const char *value, int overwrite) 170 { 171 return -1; 172 } 173 174 175 int os_unsetenv(const char *name) 176 { 177 return -1; 178 } 179 180 181 char * os_readfile(const char *name, size_t *len) 182 { 183 FILE *f; 184 char *buf; 185 186 f = fopen(name, "rb"); 187 if (f == NULL) 188 return NULL; 189 190 fseek(f, 0, SEEK_END); 191 *len = ftell(f); 192 fseek(f, 0, SEEK_SET); 193 194 buf = malloc(*len); 195 if (buf == NULL) { 196 fclose(f); 197 return NULL; 198 } 199 200 fread(buf, 1, *len, f); 201 fclose(f); 202 203 return buf; 204 } 205 206 207 void * os_zalloc(size_t size) 208 { 209 return calloc(1, size); 210 } 211 212 213 size_t os_strlcpy(char *dest, const char *src, size_t siz) 214 { 215 const char *s = src; 216 size_t left = siz; 217 218 if (left) { 219 /* Copy string up to the maximum size of the dest buffer */ 220 while (--left != 0) { 221 if ((*dest++ = *s++) == '\0') 222 break; 223 } 224 } 225 226 if (left == 0) { 227 /* Not enough room for the string; force NUL-termination */ 228 if (siz != 0) 229 *dest = '\0'; 230 while (*s++) 231 ; /* determine total src string length */ 232 } 233 234 return s - src - 1; 235 } 236