1 /* Copyright (C) 2007-2008 The Android Open Source Project
2 **
3 ** This software is licensed under the terms of the GNU General Public
4 ** License version 2, as published by the Free Software Foundation, and
5 ** may be copied, distributed, and modified under those terms.
6 **
7 ** This program is distributed in the hope that it will be useful,
8 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
9 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 ** GNU General Public License for more details.
11 */
12 #include "android/utils/debug.h"
13 #include "android/utils/eintr_wrapper.h"
14 #include "android/utils/timezone.h"
15 #include "android/utils/bufprint.h"
16 #include "android/android.h"
17 #include <stdlib.h>
18 #include <stdio.h>
19 #include <string.h>
20 #include "qemu-common.h"
21
22 #define DEBUG 1
23
24 #if 1
25 # define D_ACTIVE VERBOSE_CHECK(timezone)
26 #else
27 # define D_ACTIVE DEBUG
28 #endif
29
30 #if DEBUG
31 # define D(...) do { if (D_ACTIVE) fprintf(stderr, __VA_ARGS__); } while (0)
32 #else
33 # define D(...) ((void)0)
34 #endif
35
36
37
38 static const char* get_zoneinfo_timezone( void ); /* forward */
39
40 static char android_timezone0[256];
41 static const char* android_timezone;
42 static int android_timezone_init;
43
44 static int
check_timezone_is_zoneinfo(const char * tz)45 check_timezone_is_zoneinfo(const char* tz)
46 {
47 const char* slash1 = NULL, *slash2 = NULL;
48
49 if (tz == NULL)
50 return 0;
51
52 /* the name must be of the form Area/Location or Area/Location/SubLocation */
53 slash1 = strchr( tz, '/' );
54 if (slash1 == NULL || slash1[1] == 0)
55 return 0;
56
57 slash2 = strchr( slash1+1, '/');
58 if (slash2 != NULL) {
59 if (slash2[1] == 0 || strchr(slash2+1, '/') != NULL)
60 return 0;
61 }
62
63 return 1;
64 }
65
66 int
timezone_set(const char * tzname)67 timezone_set( const char* tzname )
68 {
69 int len;
70
71 if ( !check_timezone_is_zoneinfo(tzname) )
72 return -1;
73
74 len = strlen(tzname);
75 if (len > sizeof(android_timezone0)-1)
76 return -1;
77
78 strcpy( android_timezone0, tzname );
79 android_timezone = android_timezone0;
80 android_timezone_init = 1;
81
82 return 0;
83 }
84
85
86 char*
bufprint_zoneinfo_timezone(char * p,char * end)87 bufprint_zoneinfo_timezone( char* p, char* end )
88 {
89 const char* tz = get_zoneinfo_timezone();
90
91 if (tz == NULL || !check_timezone_is_zoneinfo(tz))
92 return bufprint(p, end, "Unknown/Unknown");
93 else
94 return bufprint(p, end, "%s", tz);
95 }
96
97 /* on OS X, the timezone directory is always /usr/share/zoneinfo
98 * this makes things easy.
99 */
100 #if defined(__APPLE__)
101
102 #include <unistd.h>
103 #include <limits.h>
104 #define LOCALTIME_FILE "/etc/localtime"
105 #define ZONEINFO_DIR "/usr/share/zoneinfo/"
106 static const char*
get_zoneinfo_timezone(void)107 get_zoneinfo_timezone( void )
108 {
109 if (!android_timezone_init) {
110 const char* tz = getenv("TZ");
111 char buff[PATH_MAX+1];
112
113 android_timezone_init = 1;
114 if (tz == NULL) {
115 int len = readlink(LOCALTIME_FILE, buff, sizeof(buff));
116 if (len < 0) {
117 dprint( "### WARNING: Could not read %s, something is very wrong on your system",
118 LOCALTIME_FILE);
119 return NULL;
120 }
121
122 buff[len] = 0;
123 D("%s: %s points to %s\n", __FUNCTION__, LOCALTIME_FILE, buff);
124 if ( memcmp(buff, ZONEINFO_DIR, sizeof(ZONEINFO_DIR)-1) ) {
125 dprint( "### WARNING: %s does not point to %s, can't determine zoneinfo timezone name",
126 LOCALTIME_FILE, ZONEINFO_DIR );
127 return NULL;
128 }
129 tz = buff + sizeof(ZONEINFO_DIR)-1;
130 if ( !check_timezone_is_zoneinfo(tz) ) {
131 dprint( "### WARNING: %s does not point to zoneinfo-compatible timezone name\n", LOCALTIME_FILE );
132 return NULL;
133 }
134 }
135 snprintf(android_timezone0, sizeof(android_timezone0), "%s", tz );
136 android_timezone = android_timezone0;
137 }
138 D( "found timezone %s", android_timezone );
139 return android_timezone;
140 }
141
142 #endif /* __APPLE__ */
143
144 /* on Linux, with glibc2, the zoneinfo directory can be changed with TZDIR environment variable
145 * but should be /usr/share/zoneinfo by default. /etc/localtime is not guaranteed to exist on
146 * all platforms, so if it doesn't, try $TZDIR/localtime, then /usr/share/zoneinfo/locatime
147 * ugly, isn't it ?
148 *
149 * besides, modern Linux distribution don't make /etc/localtime a symlink but a straight copy of
150 * the original timezone file. the only way to know which zoneinfo name to retrieve is to compare
151 * it with all files in $TZDIR (at least those that match Area/Location or Area/Location/SubLocation
152 */
153 #if defined(__linux__) || defined (__FreeBSD__)
154
155 #include <unistd.h>
156 #include <limits.h>
157 #include <sys/stat.h>
158 #include <dirent.h>
159 #include <fcntl.h>
160 #include <errno.h>
161 #include <string.h>
162
163 #define ZONEINFO_DIR "/usr/share/zoneinfo/"
164 #define LOCALTIME_FILE1 "/etc/localtime"
165
166 typedef struct {
167 const char* localtime;
168 struct stat localtime_st;
169 char* path_end;
170 char* path_root;
171 char path[ PATH_MAX ];
172 } ScanDataRec;
173
174 static int
compare_timezone_to_localtime(ScanDataRec * scan,const char * path)175 compare_timezone_to_localtime( ScanDataRec* scan,
176 const char* path )
177 {
178 struct stat st;
179 int fd1, fd2, result = 0;
180
181 D( "%s: comparing %s:", __FUNCTION__, path );
182
183 if ( stat( path, &st ) < 0 ) {
184 D( " can't stat: %s\n", strerror(errno) );
185 return 0;
186 }
187
188 if ( st.st_size != scan->localtime_st.st_size ) {
189 D( " size mistmatch (%zd != %zd)\n", (size_t)st.st_size, (size_t)scan->localtime_st.st_size );
190 return 0;
191 }
192
193 fd1 = open( scan->localtime, O_RDONLY );
194 if (fd1 < 0) {
195 D(" can't open %s: %s\n", scan->localtime, strerror(errno) );
196 return 0;
197 }
198 fd2 = open( path, O_RDONLY );
199 if (fd2 < 0) {
200 D(" can't open %s: %s\n", path, strerror(errno) );
201 close(fd1);
202 return 0;
203 }
204 do {
205 off_t nn;
206
207 for (nn = 0; nn < st.st_size; nn++) {
208 char temp[2];
209 int ret;
210
211 ret = HANDLE_EINTR(read(fd1, &temp[0], 1));
212 if (ret < 0) break;
213
214 ret = HANDLE_EINTR(read(fd2, &temp[1], 1));
215 if (ret < 0) break;
216
217 if (temp[0] != temp[1])
218 break;
219 }
220
221 result = (nn == st.st_size);
222
223 } while (0);
224
225 D( result ? " MATCH\n" : "no match\n" );
226
227 close(fd2);
228 close(fd1);
229
230 return result;
231 }
232
233 static const char*
scan_timezone_dir(ScanDataRec * scan,char * top,int depth)234 scan_timezone_dir( ScanDataRec* scan,
235 char* top,
236 int depth )
237 {
238 DIR* d = opendir( scan->path );
239 const char* result = NULL;
240
241 D( "%s: entering '%s\n", __FUNCTION__, scan->path );
242 if (d != NULL) {
243 struct dirent* ent;
244 while ((ent = readdir(d)) != NULL) {
245 struct stat ent_st;
246 char* p = top;
247
248 if (ent->d_name[0] == '.') /* avoid hidden and special files */
249 continue;
250
251 p = bufprint( p, scan->path_end, "/%s", ent->d_name );
252 if (p >= scan->path_end)
253 continue;
254
255 //D( "%s: scanning '%s'\n", __FUNCTION__, scan->path );
256
257 if ( stat( scan->path, &ent_st ) < 0 )
258 continue;
259
260 if ( S_ISDIR(ent_st.st_mode) && depth < 2 )
261 {
262 //D( "%s: directory '%s'\n", __FUNCTION__, scan->path );
263 result = scan_timezone_dir( scan, p, depth + 1 );
264 if (result != NULL)
265 break;
266 }
267 else if ( S_ISREG(ent_st.st_mode) && (depth >= 1 && depth <= 2) )
268 {
269 char* name = scan->path_root + 1;
270
271 if ( check_timezone_is_zoneinfo( name ) )
272 {
273 if (compare_timezone_to_localtime( scan, scan->path ))
274 {
275 result = strdup( name );
276 D( "%s: found '%s'\n", __FUNCTION__, result );
277 break;
278 }
279 }
280 else
281 {
282 //D( "%s: ignoring '%s'\n", __FUNCTION__, scan->path );
283 }
284 }
285 }
286 closedir(d);
287 }
288 return result;
289 }
290
291 static const char*
get_zoneinfo_timezone(void)292 get_zoneinfo_timezone( void )
293 {
294 if (!android_timezone_init)
295 {
296 const char* tz = getenv( "TZ" );
297
298 android_timezone_init = 1;
299
300 if ( tz != NULL && !check_timezone_is_zoneinfo(tz) ) {
301 D( "%s: ignoring non zoneinfo formatted TZ environment variable: '%s'\n",
302 __FUNCTION__, tz );
303 tz = NULL;
304 }
305
306 if (tz == NULL) {
307 char* tzdir = NULL;
308 int tzdirlen = 0;
309 char* localtime = NULL;
310 int len;
311 char temp[ PATH_MAX ];
312
313 /* determine the correct timezone directory */
314 {
315 const char* env = getenv("TZDIR");
316 const char* zoneinfo_dir = ZONEINFO_DIR;
317
318 if (env == NULL)
319 env = zoneinfo_dir;
320
321 if ( access( env, R_OK ) != 0 ) {
322 if ( env == zoneinfo_dir ) {
323 fprintf( stderr,
324 "### WARNING: could not find %s directory. unable to determine host timezone\n", env );
325 } else {
326 D( "%s: TZDIR does not point to valid directory, using %s instead\n",
327 __FUNCTION__, zoneinfo_dir );
328 env = zoneinfo_dir;
329 }
330 return NULL;
331 }
332 tzdir = strdup(env);
333 }
334
335 /* remove trailing slash, if any */
336 len = strlen(tzdir);
337 if (len > 0 && tzdir[len-1] == '/') {
338 tzdir[len-1] = 0;
339 len -= 1;
340 }
341 tzdirlen = len;
342 D( "%s: found timezone dir as %s\n", __FUNCTION__, tzdir );
343
344 /* try to find the localtime file */
345 localtime = LOCALTIME_FILE1;
346 if ( access( localtime, R_OK ) != 0 ) {
347 char *p = temp, *end = p + sizeof(temp);
348
349 p = bufprint( p, end, "%s/%s", tzdir, "localtime" );
350 if (p >= end || access( temp, R_OK ) != 0 ) {
351 fprintf( stderr, "### WARNING: could not find %s or %s. unable to determine host timezone\n",
352 LOCALTIME_FILE1, temp );
353 goto Exit;
354 }
355 localtime = temp;
356 }
357 localtime = strdup(localtime);
358 D( "%s: found localtime file as %s\n", __FUNCTION__, localtime );
359
360 #if 1
361 /* if the localtime file is a link, make a quick check */
362 len = readlink( localtime, temp, sizeof(temp)-1 );
363 if (len >= 0 && len > tzdirlen + 2) {
364 temp[len] = 0;
365
366 /* verify that the link points to tzdir/<something> where <something> is a valid zoneinfo name */
367 if ( !memcmp( temp, tzdir, tzdirlen ) && temp[tzdirlen] == '/' ) {
368 if ( check_timezone_is_zoneinfo( temp + tzdirlen + 1 ) ) {
369 /* we have it ! */
370 tz = temp + tzdirlen + 1;
371 D( "%s: found zoneinfo timezone %s from %s symlink\n", __FUNCTION__, tz, localtime );
372 goto Exit;
373 }
374 D( "%s: %s link points to non-zoneinfo filename %s, comparing contents\n",
375 __FUNCTION__, localtime, temp );
376 }
377 }
378 #endif
379
380 /* otherwise, parse all files under tzdir and see if we have something that looks like it */
381 {
382 ScanDataRec scan[1];
383
384 if ( stat( localtime, &scan->localtime_st ) < 0 ) {
385 fprintf( stderr, "### WARNING: can't access '%s', unable to determine host timezone\n",
386 localtime );
387 goto Exit;
388 }
389
390 scan->localtime = localtime;
391 scan->path_end = scan->path + sizeof(scan->path);
392 scan->path_root = bufprint( scan->path, scan->path_end, "%s", tzdir );
393
394 tz = scan_timezone_dir( scan, scan->path_root, 0 );
395 }
396
397 Exit:
398 if (tzdir)
399 free(tzdir);
400 if (localtime)
401 free(localtime);
402
403 if (tz == NULL)
404 return NULL;
405
406 snprintf(android_timezone0, sizeof(android_timezone0), "%s", tz);
407 android_timezone = android_timezone0;
408 }
409 D( "found timezone %s\n", android_timezone );
410 }
411 return android_timezone;
412 }
413
414 #endif /* __linux__ */
415
416
417 /* on Windows, we need to translate the Windows timezone into a ZoneInfo one */
418 #ifdef _WIN32
419 #include <time.h>
420
421 typedef struct {
422 const char* win_name;
423 const char* zoneinfo_name;
424 } Win32Timezone;
425
426 /* table generated from http://unicode.org/cldr/data/diff/supplemental/windows_tzid.html */
427 static const Win32Timezone _win32_timezones[] = {
428 { "AUS Central Standard Time" , "Australia/Darwin" },
429 { "AUS Eastern Standard Time" , "Australia/Sydney" },
430 { "Acre Standard Time" , "America/Rio_Branco" },
431 { "Afghanistan Standard Time" , "Asia/Kabul" },
432 { "Africa_Central Standard Time" , "Africa/Kigali" },
433 { "Africa_Eastern Standard Time" , "Africa/Kampala" },
434 { "Africa_FarWestern Standard Time" , "Africa/El_Aaiun" },
435 { "Africa_Southern Standard Time" , "Africa/Johannesburg" },
436 { "Africa_Western Standard Time" , "Africa/Niamey" },
437 { "Aktyubinsk Standard Time" , "Asia/Aqtobe" },
438 { "Alaska Standard Time" , "America/Juneau" },
439 { "Alaska_Hawaii Standard Time" , "America/Anchorage" },
440 { "Alaskan Standard Time" , "America/Anchorage" },
441 { "Almaty Standard Time" , "Asia/Almaty" },
442 { "Amazon Standard Time" , "America/Manaus" },
443 { "America_Central Standard Time" , "America/Winnipeg" },
444 { "America_Eastern Standard Time" , "America/Panama" },
445 { "America_Mountain Standard Time" , "America/Edmonton" },
446 { "America_Pacific Standard Time" , "America/Vancouver" },
447 { "Anadyr Standard Time" , "Asia/Anadyr" },
448 { "Aqtau Standard Time" , "Asia/Aqtau" },
449 { "Aqtobe Standard Time" , "Asia/Aqtobe" },
450 { "Arab Standard Time" , "Asia/Riyadh" },
451 { "Arabian Standard Time" , "Asia/Bahrain" },
452 { "Arabic Standard Time" , "Asia/Baghdad" },
453 { "Argentina Standard Time" , "America/Buenos_Aires" },
454 { "Argentina_Western Standard Time" , "America/Mendoza" },
455 { "Armenia Standard Time" , "Asia/Yerevan" },
456 { "Ashkhabad Standard Time" , "Asia/Ashgabat" },
457 { "Atlantic Standard Time" , "America/Curacao" },
458 { "Australia_Central Standard Time" , "Australia/Adelaide" },
459 { "Australia_CentralWestern Standard Time", "Australia/Eucla" },
460 { "Australia_Eastern Standard Time" , "Australia/Sydney" },
461 { "Australia_Western Standard Time" , "Australia/Perth" },
462 { "Azerbaijan Standard Time" , "Asia/Baku" },
463 { "Azores Standard Time" , "Atlantic/Azores" },
464 { "Baku Standard Time" , "Asia/Baku" },
465 { "Bangladesh Standard Time" , "Asia/Dhaka" },
466 { "Bering Standard Time" , "America/Adak" },
467 { "Bhutan Standard Time" , "Asia/Thimphu" },
468 { "Bolivia Standard Time" , "America/La_Paz" },
469 { "Borneo Standard Time" , "Asia/Kuching" },
470 { "Brasilia Standard Time" , "America/Sao_Paulo" },
471 { "British Standard Time" , "Europe/London" },
472 { "Brunei Standard Time" , "Asia/Brunei" },
473 { "Canada Central Standard Time" , "America/Regina" },
474 { "Cape Verde Standard Time" , "Atlantic/Cape_Verde" },
475 { "Cape_Verde Standard Time" , "Atlantic/Cape_Verde" },
476 { "Caucasus Standard Time" , "Asia/Yerevan" },
477 { "Cen. Australia Standard Time" , "Australia/Adelaide" },
478 { "Central Standard Time" , "America/Chicago" },
479 { "Central America Standard Time" , "America/Guatemala" },
480 { "Central Asia Standard Time" , "Asia/Dhaka" },
481 { "Central Brazilian Standard Time" , "America/Manaus" },
482 { "Central Europe Standard Time" , "Europe/Prague" },
483 { "Central European Standard Time" , "Europe/Warsaw" },
484 { "Central Pacific Standard Time" , "Pacific/Guadalcanal" },
485 { "Central Standard Time (Mexico)" , "America/Mexico_City" },
486 { "Chamorro Standard Time" , "Pacific/Guam" },
487 { "Changbai Standard Time" , "Asia/Harbin" },
488 { "Chatham Standard Time" , "Pacific/Chatham" },
489 { "Chile Standard Time" , "America/Santiago" },
490 { "China Standard Time" , "Asia/Taipei" },
491 { "Choibalsan Standard Time" , "Asia/Choibalsan" },
492 { "Christmas Standard Time" , "Indian/Christmas" },
493 { "Cocos Standard Time" , "Indian/Cocos" },
494 { "Colombia Standard Time" , "America/Bogota" },
495 { "Cook Standard Time" , "Pacific/Rarotonga" },
496 { "Cuba Standard Time" , "America/Havana" },
497 { "Dacca Standard Time" , "Asia/Dhaka" },
498 { "Dateline Standard Time" , "Pacific/Kwajalein" },
499 { "Davis Standard Time" , "Antarctica/Davis" },
500 { "Dominican Standard Time" , "America/Santo_Domingo" },
501 { "DumontDUrville Standard Time" , "Antarctica/DumontDUrville" },
502 { "Dushanbe Standard Time" , "Asia/Dushanbe" },
503 { "Dutch_Guiana Standard Time" , "America/Paramaribo" },
504 { "E. Africa Standard Time" , "Africa/Nairobi" },
505 { "E. Australia Standard Time" , "Australia/Brisbane" },
506 { "E. Europe Standard Time" , "Europe/Minsk" },
507 { "E. South America Standard Time" , "America/Sao_Paulo" },
508 { "East_Timor Standard Time" , "Asia/Dili" },
509 { "Easter Standard Time" , "Pacific/Easter" },
510 { "Eastern Standard Time" , "America/New_York" },
511 { "Ecuador Standard Time" , "America/Guayaquil" },
512 { "Egypt Standard Time" , "Africa/Cairo" },
513 { "Ekaterinburg Standard Time" , "Asia/Yekaterinburg" },
514 { "Europe_Central Standard Time" , "Europe/Oslo" },
515 { "Europe_Eastern Standard Time" , "Europe/Vilnius" },
516 { "Europe_Western Standard Time" , "Atlantic/Canary" },
517 { "FLE Standard Time" , "Europe/Helsinki" },
518 { "Falkland Standard Time" , "Atlantic/Stanley" },
519 { "Fiji Standard Time" , "Pacific/Fiji" },
520 { "French_Guiana Standard Time" , "America/Cayenne" },
521 { "French_Southern Standard Time" , "Indian/Kerguelen" },
522 { "Frunze Standard Time" , "Asia/Bishkek" },
523 { "GMT Standard Time" , "Europe/Dublin" },
524 { "GTB Standard Time" , "Europe/Istanbul" },
525 { "Galapagos Standard Time" , "Pacific/Galapagos" },
526 { "Gambier Standard Time" , "Pacific/Gambier" },
527 { "Georgia Standard Time" , "Asia/Tbilisi" },
528 { "Georgian Standard Time" , "Asia/Tbilisi" },
529 { "Gilbert_Islands Standard Time" , "Pacific/Tarawa" },
530 { "Goose_Bay Standard Time" , "America/Goose_Bay" },
531 { "Greenland Standard Time" , "America/Godthab" },
532 { "Greenland_Central Standard Time" , "America/Scoresbysund" },
533 { "Greenland_Eastern Standard Time" , "America/Scoresbysund" },
534 { "Greenland_Western Standard Time" , "America/Godthab" },
535 { "Greenwich Standard Time" , "Africa/Casablanca" },
536 { "Guam Standard Time" , "Pacific/Guam" },
537 { "Gulf Standard Time" , "Asia/Muscat" },
538 { "Guyana Standard Time" , "America/Guyana" },
539 { "Hawaii_Aleutian Standard Time" , "Pacific/Honolulu" },
540 { "Hawaiian Standard Time" , "Pacific/Honolulu" },
541 { "Hong_Kong Standard Time" , "Asia/Hong_Kong" },
542 { "Hovd Standard Time" , "Asia/Hovd" },
543 { "India Standard Time" , "Asia/Calcutta" },
544 { "Indian_Ocean Standard Time" , "Indian/Chagos" },
545 { "Indochina Standard Time" , "Asia/Vientiane" },
546 { "Indonesia_Central Standard Time" , "Asia/Makassar" },
547 { "Indonesia_Eastern Standard Time" , "Asia/Jayapura" },
548 { "Indonesia_Western Standard Time" , "Asia/Jakarta" },
549 { "Iran Standard Time" , "Asia/Tehran" },
550 { "Irish Standard Time" , "Europe/Dublin" },
551 { "Irkutsk Standard Time" , "Asia/Irkutsk" },
552 { "Israel Standard Time" , "Asia/Jerusalem" },
553 { "Japan Standard Time" , "Asia/Tokyo" },
554 { "Jordan Standard Time" , "Asia/Amman" },
555 { "Kamchatka Standard Time" , "Asia/Kamchatka" },
556 { "Karachi Standard Time" , "Asia/Karachi" },
557 { "Kashgar Standard Time" , "Asia/Kashgar" },
558 { "Kazakhstan_Eastern Standard Time" , "Asia/Almaty" },
559 { "Kazakhstan_Western Standard Time" , "Asia/Aqtobe" },
560 { "Kizilorda Standard Time" , "Asia/Qyzylorda" },
561 { "Korea Standard Time" , "Asia/Seoul" },
562 { "Kosrae Standard Time" , "Pacific/Kosrae" },
563 { "Krasnoyarsk Standard Time" , "Asia/Krasnoyarsk" },
564 { "Kuybyshev Standard Time" , "Europe/Samara" },
565 { "Kwajalein Standard Time" , "Pacific/Kwajalein" },
566 { "Kyrgystan Standard Time" , "Asia/Bishkek" },
567 { "Lanka Standard Time" , "Asia/Colombo" },
568 { "Liberia Standard Time" , "Africa/Monrovia" },
569 { "Line_Islands Standard Time" , "Pacific/Kiritimati" },
570 { "Long_Shu Standard Time" , "Asia/Chongqing" },
571 { "Lord_Howe Standard Time" , "Australia/Lord_Howe" },
572 { "Macau Standard Time" , "Asia/Macau" },
573 { "Magadan Standard Time" , "Asia/Magadan" },
574 { "Malaya Standard Time" , "Asia/Kuala_Lumpur" },
575 { "Malaysia Standard Time" , "Asia/Kuching" },
576 { "Maldives Standard Time" , "Indian/Maldives" },
577 { "Marquesas Standard Time" , "Pacific/Marquesas" },
578 { "Marshall_Islands Standard Time" , "Pacific/Majuro" },
579 { "Mauritius Standard Time" , "Indian/Mauritius" },
580 { "Mawson Standard Time" , "Antarctica/Mawson" },
581 { "Mexico Standard Time" , "America/Mexico_City" },
582 { "Mexico Standard Time 2 Standard Time" , "America/Chihuahua" },
583 { "Mid-Atlantic Standard Time" , "America/Noronha" },
584 { "Middle East Standard Time" , "Asia/Beirut" },
585 { "Mongolia Standard Time" , "Asia/Ulaanbaatar" },
586 { "Montevideo Standard Time" , "America/Montevideo" },
587 { "Moscow Standard Time" , "Europe/Moscow" },
588 { "Mountain Standard Time" , "America/Denver" },
589 { "Mountain Standard Time (Mexico)" , "America/Chihuahua" },
590 { "Myanmar Standard Time" , "Asia/Rangoon" },
591 { "N. Central Asia Standard Time" , "Asia/Novosibirsk" },
592 { "Namibia Standard Time" , "Africa/Windhoek" },
593 { "Nauru Standard Time" , "Pacific/Nauru" },
594 { "Nepal Standard Time" , "Asia/Katmandu" },
595 { "New Zealand Standard Time" , "Pacific/Auckland" },
596 { "New_Caledonia Standard Time" , "Pacific/Noumea" },
597 { "New_Zealand Standard Time" , "Pacific/Auckland" },
598 { "Newfoundland Standard Time" , "America/St_Johns" },
599 { "Niue Standard Time" , "Pacific/Niue" },
600 { "Norfolk Standard Time" , "Pacific/Norfolk" },
601 { "Noronha Standard Time" , "America/Noronha" },
602 { "North Asia Standard Time" , "Asia/Krasnoyarsk" },
603 { "North Asia East Standard Time" , "Asia/Ulaanbaatar" },
604 { "North_Mariana Standard Time" , "Pacific/Saipan" },
605 { "Novosibirsk Standard Time" , "Asia/Novosibirsk" },
606 { "Omsk Standard Time" , "Asia/Omsk" },
607 { "Oral Standard Time" , "Asia/Oral" },
608 { "Pacific Standard Time" , "America/Los_Angeles" },
609 { "Pacific SA Standard Time" , "America/Santiago" },
610 { "Pacific Standard Time (Mexico)" , "America/Tijuana" },
611 { "Pakistan Standard Time" , "Asia/Karachi" },
612 { "Palau Standard Time" , "Pacific/Palau" },
613 { "Papua_New_Guinea Standard Time" , "Pacific/Port_Moresby" },
614 { "Paraguay Standard Time" , "America/Asuncion" },
615 { "Peru Standard Time" , "America/Lima" },
616 { "Philippines Standard Time" , "Asia/Manila" },
617 { "Phoenix_Islands Standard Time" , "Pacific/Enderbury" },
618 { "Pierre_Miquelon Standard Time" , "America/Miquelon" },
619 { "Pitcairn Standard Time" , "Pacific/Pitcairn" },
620 { "Ponape Standard Time" , "Pacific/Ponape" },
621 { "Qyzylorda Standard Time" , "Asia/Qyzylorda" },
622 { "Reunion Standard Time" , "Indian/Reunion" },
623 { "Romance Standard Time" , "Europe/Paris" },
624 { "Rothera Standard Time" , "Antarctica/Rothera" },
625 { "Russian Standard Time" , "Europe/Moscow" },
626 { "SA Eastern Standard Time" , "America/Buenos_Aires" },
627 { "SA Pacific Standard Time" , "America/Bogota" },
628 { "SA Western Standard Time" , "America/Caracas" },
629 { "SE Asia Standard Time" , "Asia/Bangkok" },
630 { "Sakhalin Standard Time" , "Asia/Sakhalin" },
631 { "Samara Standard Time" , "Europe/Samara" },
632 { "Samarkand Standard Time" , "Asia/Samarkand" },
633 { "Samoa Standard Time" , "Pacific/Apia" },
634 { "Seychelles Standard Time" , "Indian/Mahe" },
635 { "Shevchenko Standard Time" , "Asia/Aqtau" },
636 { "Singapore Standard Time" , "Asia/Singapore" },
637 { "Solomon Standard Time" , "Pacific/Guadalcanal" },
638 { "South Africa Standard Time" , "Africa/Johannesburg" },
639 { "South_Georgia Standard Time" , "Atlantic/South_Georgia" },
640 { "Sri Lanka Standard Time" , "Asia/Colombo" },
641 { "Suriname Standard Time" , "America/Paramaribo" },
642 { "Sverdlovsk Standard Time" , "Asia/Yekaterinburg" },
643 { "Syowa Standard Time" , "Antarctica/Syowa" },
644 { "Tahiti Standard Time" , "Pacific/Tahiti" },
645 { "Taipei Standard Time" , "Asia/Taipei" },
646 { "Tajikistan Standard Time" , "Asia/Dushanbe" },
647 { "Tashkent Standard Time" , "Asia/Tashkent" },
648 { "Tasmania Standard Time" , "Australia/Hobart" },
649 { "Tbilisi Standard Time" , "Asia/Tbilisi" },
650 { "Tokelau Standard Time" , "Pacific/Fakaofo" },
651 { "Tokyo Standard Time" , "Asia/Tokyo" },
652 { "Tonga Standard Time" , "Pacific/Tongatapu" },
653 { "Truk Standard Time" , "Pacific/Truk" },
654 { "Turkey Standard Time" , "Europe/Istanbul" },
655 { "Turkmenistan Standard Time" , "Asia/Ashgabat" },
656 { "Tuvalu Standard Time" , "Pacific/Funafuti" },
657 { "US Eastern Standard Time" , "America/Indianapolis" },
658 { "US Mountain Standard Time" , "America/Phoenix" },
659 { "Uralsk Standard Time" , "Asia/Oral" },
660 { "Uruguay Standard Time" , "America/Montevideo" },
661 { "Urumqi Standard Time" , "Asia/Urumqi" },
662 { "Uzbekistan Standard Time" , "Asia/Tashkent" },
663 { "Vanuatu Standard Time" , "Pacific/Efate" },
664 { "Venezuela Standard Time" , "America/Caracas" },
665 { "Vladivostok Standard Time" , "Asia/Vladivostok" },
666 { "Volgograd Standard Time" , "Europe/Volgograd" },
667 { "Vostok Standard Time" , "Antarctica/Vostok" },
668 { "W. Australia Standard Time" , "Australia/Perth" },
669 { "W. Central Africa Standard Time" , "Africa/Lagos" },
670 { "W. Europe Standard Time" , "Europe/Berlin" },
671 { "Wake Standard Time" , "Pacific/Wake" },
672 { "Wallis Standard Time" , "Pacific/Wallis" },
673 { "West Asia Standard Time" , "Asia/Karachi" },
674 { "West Pacific Standard Time" , "Pacific/Guam" },
675 { "Yakutsk Standard Time" , "Asia/Yakutsk" },
676 { "Yekaterinburg Standard Time" , "Asia/Yekaterinburg" },
677 { "Yerevan Standard Time" , "Asia/Yerevan" },
678 { "Yukon Standard Time" , "America/Yakutat" },
679 { NULL, NULL }
680 };
681
682 static const char*
get_zoneinfo_timezone(void)683 get_zoneinfo_timezone( void )
684 {
685 if (!android_timezone_init)
686 {
687 char tzname[128];
688 time_t t = time(NULL);
689 struct tm* tm = localtime(&t);
690 const Win32Timezone* win32tz = _win32_timezones;
691
692 android_timezone_init = 1;
693
694 if (!tm) {
695 D("%s: could not determine current date/time\n", __FUNCTION__);
696 return NULL;
697 }
698
699 memset(tzname, 0, sizeof(tzname));
700 strftime(tzname, sizeof(tzname) - 1, "%Z", tm);
701
702 for (win32tz = _win32_timezones; win32tz->win_name != NULL; win32tz++)
703 if ( !strcmp(win32tz->win_name, tzname) ) {
704 android_timezone = win32tz->zoneinfo_name;
705 goto Exit;
706 }
707
708 #if 0 /* TODO */
709 /* we didn't find it, this may come from localized versions of Windows. we're going to explore the registry,
710 * as the code in Postgresql does...
711 */
712 #endif
713 D( "%s: could not determine current timezone\n", __FUNCTION__ );
714 return NULL;
715 }
716 Exit:
717 D( "emulator: found timezone %s\n", android_timezone );
718 return android_timezone;
719 }
720
721 #endif /* _WIN32 */
722
723