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inet6: require RTF_ANNOUNCE to proxy NS
[dragonfly.git] / usr.sbin / tzsetup / tzsetup.c
blob59d21cf599f4d19a82e9ead60d46c34950707afb
1 /*
2 * Copyright 1996 Massachusetts Institute of Technology
3 *
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that both the above copyright notice and this
7 * permission notice appear in all copies, that both the above
8 * copyright notice and this permission notice appear in all
9 * supporting documentation, and that the name of M.I.T. not be used
10 * in advertising or publicity pertaining to distribution of the
11 * software without specific, written prior permission. M.I.T. makes
12 * no representations about the suitability of this software for any
13 * purpose. It is provided "as is" without express or implied
14 * warranty.
15 *
16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: head/usr.sbin/tzsetup/tzsetup.c 337522 2018-08-09 02:47:22Z delphij $
30 */
31
32 /*
33 * Second attempt at a `tzmenu' program, using the separate description
34 * files provided in newer tzdata releases.
35 */
36
37 #include <err.h>
38 #include <errno.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <time.h>
43 #include <unistd.h>
44
45 #include <sys/fcntl.h>
46 #include <sys/param.h>
47 #include <sys/queue.h>
48 #include <sys/stat.h>
49 #include <sys/sysctl.h>
50
51 #ifdef HAVE_DIALOG
52 #include <dialog.h>
53 #endif
54
55 #define _PATH_ZONETAB "/usr/share/zoneinfo/zone.tab"
56 #define _PATH_ISO3166 "/usr/share/misc/iso3166"
57 #define _PATH_ZONEINFO "/usr/share/zoneinfo"
58 #define _PATH_LOCALTIME "/etc/localtime"
59 #define _PATH_DB "/var/db/zoneinfo"
60 #define _PATH_WALL_CMOS_CLOCK "/etc/wall_cmos_clock"
61
62 #ifdef PATH_MAX
63 #define SILLY_BUFFER_SIZE 2*PATH_MAX
64 #else
65 #warning "Somebody needs to fix this to dynamically size this buffer."
66 #define SILLY_BUFFER_SIZE 2048
67 #endif
68
69 /* special return codes for `fire' actions */
70 #define DITEM_FAILURE 1
71
72 /* flags - returned in upper 16 bits of return status */
73 #define DITEM_LEAVE_MENU (1 << 16)
74 #define DITEM_RECREATE (1 << 18)
75
76 static char path_zonetab[MAXPATHLEN], path_iso3166[MAXPATHLEN],
77 path_zoneinfo[MAXPATHLEN], path_localtime[MAXPATHLEN],
78 path_db[MAXPATHLEN], path_wall_cmos_clock[MAXPATHLEN];
79
80 static int reallydoit = 1;
81 static int reinstall = 0;
82 static char *chrootenv = NULL;
83
84 static void usage(void);
85 static int install_zoneinfo(const char *zoneinfo);
86 static int install_zoneinfo_file(const char *zoneinfo_file);
87
88 #ifdef HAVE_DIALOG
89 /* for use in describing more exotic behaviors */
90 typedef struct dialogMenuItem {
91 char *prompt;
92 char *title;
93 int (*fire)(struct dialogMenuItem *self);
94 void *data;
95 } dialogMenuItem;
96
97 static int
98 xdialog_count_rows(const char *p)
99 {
100 int rows = 0;
101
102 while ((p = strchr(p, '\n')) != NULL) {
103 p++;
104 if (*p == '\0')
105 break;
106 rows++;
107 }
108
109 return (rows ? rows : 1);
110 }
111
112 static int
113 xdialog_count_columns(const char *p)
114 {
115 int len;
116 int max_len = 0;
117 const char *q;
118
119 for (; (q = strchr(p, '\n')) != NULL; p = q + 1) {
120 len = q - p;
121 max_len = MAX(max_len, len);
122 }
123
124 len = strlen(p);
125 max_len = MAX(max_len, len);
126 return (max_len);
127 }
128
129 static int
130 xdialog_menu(const char *title, const char *cprompt, int height, int width,
131 int menu_height, int item_no, dialogMenuItem *ditems)
132 {
133 int i, result, choice = 0;
134 DIALOG_LISTITEM *listitems;
135 DIALOG_VARS save_vars;
136
137 dlg_save_vars(&save_vars);
138
139 /* initialize list items */
140 listitems = calloc(item_no + 1, sizeof(DIALOG_LISTITEM));
141 if (listitems == NULL)
142 errx(1, "Failed to allocate memory in xdialog_menu");
143 for (i = 0; i < item_no; i++) {
144 listitems[i].name = ditems[i].prompt;
145 listitems[i].text = ditems[i].title;
146 }
147
148 /* calculate height */
149 if (height < 0)
150 height = xdialog_count_rows(cprompt) + menu_height + 4 + 2;
151 if (height > LINES)
152 height = LINES;
153
154 /* calculate width */
155 if (width < 0) {
156 int tag_x = 0;
157
158 for (i = 0; i < item_no; i++) {
159 int j, l;
160
161 l = strlen(listitems[i].name);
162 for (j = 0; j < item_no; j++) {
163 int k = strlen(listitems[j].text);
164 tag_x = MAX(tag_x, l + k + 2);
165 }
166 }
167 width = MAX(xdialog_count_columns(cprompt), title != NULL ?
168 xdialog_count_columns(title) : 0);
169 width = MAX(width, tag_x + 4) + 4;
170 }
171 width = MAX(width, 24);
172 if (width > COLS)
173 width = COLS;
174
175 again:
176 dialog_vars.default_item = listitems[choice].name;
177 result = dlg_menu(title, cprompt, height, width,
178 menu_height, item_no, listitems, &choice, NULL);
179 switch (result) {
180 case DLG_EXIT_ESC:
181 result = -1;
182 break;
183 case DLG_EXIT_OK:
184 if (ditems[choice].fire != NULL) {
185 int status;
186
187 status = ditems[choice].fire(ditems + choice);
188 if (status & DITEM_RECREATE) {
189 dlg_clear();
190 goto again;
191 }
192 }
193 result = 0;
194 break;
195 case DLG_EXIT_CANCEL:
196 default:
197 result = 1;
198 break;
199 }
200
201 free(listitems);
202 dlg_restore_vars(&save_vars);
203 return (result);
204 }
205
206 static int usedialog = 1;
207
208 static int confirm_zone(const char *filename);
209 static int continent_country_menu(dialogMenuItem *);
210 static int set_zone_multi(dialogMenuItem *);
211 static int set_zone_whole_country(dialogMenuItem *);
212 static int set_zone_menu(dialogMenuItem *);
213 static int set_zone_utc(void);
214
215 struct continent {
216 dialogMenuItem *menu;
217 int nitems;
218 };
219
220 static struct continent africa, america, antarctica, arctic, asia, atlantic;
221 static struct continent australia, europe, indian, pacific, utc;
222
223 static struct continent_names {
224 const char *name;
225 struct continent *continent;
226 } continent_names[] = {
227 { "Africa", &africa },
228 { "America", &america },
229 { "Antarctica", &antarctica },
230 { "Arctic", &arctic },
231 { "Asia", &asia },
232 { "Atlantic", &atlantic },
233 { "Australia", &australia },
234 { "Europe", &europe },
235 { "Indian", &indian },
236 { "Pacific", &pacific },
237 { "UTC", &utc }
238 };
239
240 static struct continent_items {
241 char prompt[2];
242 char title[30];
243 } continent_items[] = {
244 { "1", "Africa" },
245 { "2", "America -- North and South" },
246 { "3", "Antarctica" },
247 { "4", "Arctic Ocean" },
248 { "5", "Asia" },
249 { "6", "Atlantic Ocean" },
250 { "7", "Australia" },
251 { "8", "Europe" },
252 { "9", "Indian Ocean" },
253 { "0", "Pacific Ocean" },
254 { "a", "UTC" }
255 };
256
257 #define NCONTINENTS \
258 (int)((sizeof(continent_items)) / (sizeof(continent_items[0])))
259 static dialogMenuItem continents[NCONTINENTS];
260
261 #define OCEANP(x) ((x) == 3 || (x) == 5 || (x) == 8 || (x) == 9)
262
263 static int
264 continent_country_menu(dialogMenuItem *continent)
265 {
266 char title[64], prompt[64];
267 struct continent *contp = continent->data;
268 int isocean = OCEANP(continent - continents);
269 int menulen;
270 int rv;
271
272 if (strcmp(continent->title, "UTC") == 0)
273 return (set_zone_utc());
274
275 /* Short cut -- if there's only one country, don't post a menu. */
276 if (contp->nitems == 1)
277 return (contp->menu[0].fire(&contp->menu[0]));
278
279 /* It's amazing how much good grammar really matters... */
280 if (!isocean) {
281 snprintf(title, sizeof(title), "Countries in %s",
282 continent->title);
283 snprintf(prompt, sizeof(prompt), "Select a country or region");
284 } else {
285 snprintf(title, sizeof(title), "Islands and groups in the %s",
286 continent->title);
287 snprintf(prompt, sizeof(prompt), "Select an island or group");
288 }
289
290 menulen = contp->nitems < 16 ? contp->nitems : 16;
291 rv = xdialog_menu(title, prompt, -1, -1, menulen, contp->nitems,
292 contp->menu);
293 if (rv == 0)
294 return (DITEM_LEAVE_MENU);
295 return (DITEM_RECREATE);
296 }
297
298 static struct continent *
299 find_continent(const char *name)
300 {
301 int i;
302
303 for (i = 0; i < NCONTINENTS; i++)
304 if (strcmp(name, continent_names[i].name) == 0)
305 return (continent_names[i].continent);
306 return (0);
307 }
308
309 struct country {
310 char *name;
311 char *tlc;
312 int nzones;
313 char *filename; /* use iff nzones < 0 */
314 struct continent *continent; /* use iff nzones < 0 */
315 TAILQ_HEAD(, zone) zones; /* use iff nzones > 0 */
316 dialogMenuItem *submenu; /* use iff nzones > 0 */
317 };
318
319 struct zone {
320 TAILQ_ENTRY(zone) link;
321 char *descr;
322 char *filename;
323 struct continent *continent;
324 };
325
326 /*
327 * This is the easiest organization... we use ISO 3166 country codes,
328 * of the two-letter variety, so we just size this array to suit.
329 * Beats worrying about dynamic allocation.
330 */
331 #define NCOUNTRIES (26 * 26)
332 static struct country countries[NCOUNTRIES];
333
334 #define CODE2INT(s) ((s[0] - 'A') * 26 + (s[1] - 'A'))
335
336 /*
337 * Read the ISO 3166 country code database in _PATH_ISO3166
338 * (/usr/share/misc/iso3166). On error, exit via err(3).
339 */
340 static void
341 read_iso3166_table(void)
342 {
343 FILE *fp;
344 struct country *cp;
345 size_t len;
346 char *s, *t, *name;
347 int lineno;
348
349 fp = fopen(path_iso3166, "r");
350 if (!fp)
351 err(1, "%s", path_iso3166);
352 lineno = 0;
353
354 while ((s = fgetln(fp, &len)) != NULL) {
355 lineno++;
356 if (s[len - 1] != '\n')
357 errx(1, "%s:%d: invalid format", path_iso3166, lineno);
358 s[len - 1] = '\0';
359 if (s[0] == '#' || strspn(s, " \t") == len - 1)
360 continue;
361
362 /* Isolate the two-letter code. */
363 t = strsep(&s, "\t");
364 if (t == NULL || strlen(t) != 2)
365 errx(1, "%s:%d: invalid format", path_iso3166, lineno);
366 if (t[0] < 'A' || t[0] > 'Z' || t[1] < 'A' || t[1] > 'Z')
367 errx(1, "%s:%d: invalid code `%s'", path_iso3166,
368 lineno, t);
369
370 name = s;
371
372 cp = &countries[CODE2INT(t)];
373 if (cp->name)
374 errx(1, "%s:%d: country code `%s' multiply defined: %s",
375 path_iso3166, lineno, t, cp->name);
376 cp->name = strdup(name);
377 if (cp->name == NULL)
378 errx(1, "malloc failed");
379 cp->tlc = strdup(t);
380 if (cp->tlc == NULL)
381 errx(1, "malloc failed");
382 }
383
384 fclose(fp);
385 }
386
387 static void
388 add_zone_to_country(int lineno, const char *tlc, const char *descr,
389 const char *file, struct continent *cont)
390 {
391 struct zone *zp;
392 struct country *cp;
393
394 if (tlc[0] < 'A' || tlc[0] > 'Z' || tlc[1] < 'A' || tlc[1] > 'Z')
395 errx(1, "%s:%d: country code `%s' invalid", path_zonetab,
396 lineno, tlc);
397
398 cp = &countries[CODE2INT(tlc)];
399 if (cp->name == 0)
400 errx(1, "%s:%d: country code `%s' unknown", path_zonetab,
401 lineno, tlc);
402
403 if (descr) {
404 if (cp->nzones < 0)
405 errx(1, "%s:%d: conflicting zone definition",
406 path_zonetab, lineno);
407
408 zp = malloc(sizeof(*zp));
409 if (zp == NULL)
410 errx(1, "malloc(%zu)", sizeof(*zp));
411
412 if (cp->nzones == 0)
413 TAILQ_INIT(&cp->zones);
414
415 zp->descr = strdup(descr);
416 if (zp->descr == NULL)
417 errx(1, "malloc failed");
418 zp->filename = strdup(file);
419 if (zp->filename == NULL)
420 errx(1, "malloc failed");
421 zp->continent = cont;
422 TAILQ_INSERT_TAIL(&cp->zones, zp, link);
423 cp->nzones++;
424 } else {
425 if (cp->nzones > 0)
426 errx(1, "%s:%d: zone must have description",
427 path_zonetab, lineno);
428 if (cp->nzones < 0)
429 errx(1, "%s:%d: zone multiply defined",
430 path_zonetab, lineno);
431 cp->nzones = -1;
432 cp->filename = strdup(file);
433 if (cp->filename == NULL)
434 errx(1, "malloc failed");
435 cp->continent = cont;
436 }
437 }
438
439 /*
440 * This comparison function intentionally sorts all of the null-named
441 * ``countries''---i.e., the codes that don't correspond to a real
442 * country---to the end. Everything else is lexical by country name.
443 */
444 static int
445 compare_countries(const void *xa, const void *xb)
446 {
447 const struct country *a = xa, *b = xb;
448
449 if (a->name == 0 && b->name == 0)
450 return (0);
451 if (a->name == 0 && b->name != 0)
452 return (1);
453 if (b->name == 0)
454 return (-1);
455
456 return (strcmp(a->name, b->name));
457 }
458
459 /*
460 * This must be done AFTER all zone descriptions are read, since it breaks
461 * CODE2INT().
462 */
463 static void
464 sort_countries(void)
465 {
466
467 qsort(countries, NCOUNTRIES, sizeof(countries[0]), compare_countries);
468 }
469
470 static void
471 read_zones(void)
472 {
473 char contbuf[16];
474 FILE *fp;
475 struct continent *cont;
476 size_t len, contlen;
477 char *line, *tlc, *file, *descr, *p;
478 int lineno;
479
480 fp = fopen(path_zonetab, "r");
481 if (!fp)
482 err(1, "%s", path_zonetab);
483 lineno = 0;
484
485 while ((line = fgetln(fp, &len)) != NULL) {
486 lineno++;
487 if (line[len - 1] != '\n')
488 errx(1, "%s:%d: invalid format", path_zonetab, lineno);
489 line[len - 1] = '\0';
490 if (line[0] == '#')
491 continue;
492
493 tlc = strsep(&line, "\t");
494 if (strlen(tlc) != 2)
495 errx(1, "%s:%d: invalid country code `%s'",
496 path_zonetab, lineno, tlc);
497 /* coord = */ strsep(&line, "\t"); /* Unused */
498 file = strsep(&line, "\t");
499 /* get continent portion from continent/country */
500 p = strchr(file, '/');
501 if (p == NULL)
502 errx(1, "%s:%d: invalid zone name `%s'", path_zonetab,
503 lineno, file);
504 contlen = p - file + 1; /* trailing nul */
505 if (contlen > sizeof(contbuf))
506 errx(1, "%s:%d: continent name in zone name `%s' too long",
507 path_zonetab, lineno, file);
508 strlcpy(contbuf, file, contlen);
509 cont = find_continent(contbuf);
510 if (!cont)
511 errx(1, "%s:%d: invalid region `%s'", path_zonetab,
512 lineno, contbuf);
513
514 descr = (line != NULL && *line != '\0') ? line : NULL;
515
516 add_zone_to_country(lineno, tlc, descr, file, cont);
517 }
518 fclose(fp);
519 }
520
521 static void
522 make_menus(void)
523 {
524 struct country *cp;
525 struct zone *zp, *zp2;
526 struct continent *cont;
527 dialogMenuItem *dmi;
528 int i;
529
530 /*
531 * First, count up all the countries in each continent/ocean.
532 * Be careful to count those countries which have multiple zones
533 * only once for each. NB: some countries are in multiple
534 * continents/oceans.
535 */
536 for (cp = countries; cp->name; cp++) {
537 if (cp->nzones == 0)
538 continue;
539 if (cp->nzones < 0) {
540 cp->continent->nitems++;
541 } else {
542 TAILQ_FOREACH(zp, &cp->zones, link) {
543 cont = zp->continent;
544 for (zp2 = TAILQ_FIRST(&cp->zones);
545 zp2->continent != cont;
546 zp2 = TAILQ_NEXT(zp2, link))
547 ;
548 if (zp2 == zp)
549 zp->continent->nitems++;
550 }
551 }
552 }
553
554 /*
555 * Now allocate memory for the country menus and initialize
556 * continent menus. We set nitems back to zero so that we can
557 * use it for counting again when we actually build the menus.
558 */
559 memset(continents, 0, sizeof(continents));
560 for (i = 0; i < NCONTINENTS; i++) {
561 continent_names[i].continent->menu =
562 malloc(sizeof(dialogMenuItem) *
563 continent_names[i].continent->nitems);
564 if (continent_names[i].continent->menu == NULL)
565 errx(1, "malloc for continent menu");
566 continent_names[i].continent->nitems = 0;
567 continents[i].prompt = continent_items[i].prompt;
568 continents[i].title = continent_items[i].title;
569 continents[i].fire = continent_country_menu;
570 continents[i].data = continent_names[i].continent;
571 }
572
573 /*
574 * Now that memory is allocated, create the menu items for
575 * each continent. For multiple-zone countries, also create
576 * the country's zone submenu.
577 */
578 for (cp = countries; cp->name; cp++) {
579 if (cp->nzones == 0)
580 continue;
581 if (cp->nzones < 0) {
582 dmi = &cp->continent->menu[cp->continent->nitems];
583 memset(dmi, 0, sizeof(*dmi));
584 asprintf(&dmi->prompt, "%d", ++cp->continent->nitems);
585 dmi->title = cp->name;
586 dmi->fire = set_zone_whole_country;
587 dmi->data = cp;
588 } else {
589 cp->submenu = malloc(cp->nzones * sizeof(*dmi));
590 if (cp->submenu == 0)
591 errx(1, "malloc for submenu");
592 cp->nzones = 0;
593 TAILQ_FOREACH(zp, &cp->zones, link) {
594 cont = zp->continent;
595 dmi = &cp->submenu[cp->nzones];
596 memset(dmi, 0, sizeof(*dmi));
597 asprintf(&dmi->prompt, "%d", ++cp->nzones);
598 dmi->title = zp->descr;
599 dmi->fire = set_zone_multi;
600 dmi->data = zp;
601
602 for (zp2 = TAILQ_FIRST(&cp->zones);
603 zp2->continent != cont;
604 zp2 = TAILQ_NEXT(zp2, link))
605 ;
606 if (zp2 != zp)
607 continue;
608
609 dmi = &cont->menu[cont->nitems];
610 memset(dmi, 0, sizeof(*dmi));
611 asprintf(&dmi->prompt, "%d", ++cont->nitems);
612 dmi->title = cp->name;
613 dmi->fire = set_zone_menu;
614 dmi->data = cp;
615 }
616 }
617 }
618 }
619
620 static int
621 set_zone_menu(dialogMenuItem *dmi)
622 {
623 char title[64], prompt[64];
624 struct country *cp = dmi->data;
625 int menulen;
626 int rv;
627
628 snprintf(title, sizeof(title), "%s Time Zones", cp->name);
629 snprintf(prompt, sizeof(prompt),
630 "Select a zone which observes the same time as your locality.");
631 menulen = cp->nzones < 16 ? cp->nzones : 16;
632 rv = xdialog_menu(title, prompt, -1, -1, menulen, cp->nzones,
633 cp->submenu);
634 if (rv != 0)
635 return (DITEM_RECREATE);
636 return (DITEM_LEAVE_MENU);
637 }
638
639 static int
640 set_zone_utc(void)
641 {
642 if (!confirm_zone("UTC"))
643 return (DITEM_FAILURE | DITEM_RECREATE);
644
645 return (install_zoneinfo("UTC"));
646 }
647
648 static int
649 confirm_zone(const char *filename)
650 {
651 char title[64], prompt[64];
652 time_t t = time(0);
653 struct tm *tm;
654 int rv;
655
656 setenv("TZ", filename, 1);
657 tzset();
658 tm = localtime(&t);
659
660 snprintf(title, sizeof(title), "Confirmation");
661 snprintf(prompt, sizeof(prompt),
662 "Does the abbreviation `%s' look reasonable?", tm->tm_zone);
663 rv = !dialog_yesno(title, prompt, 5, 72);
664 return (rv);
665 }
666
667 static int
668 set_zone_multi(dialogMenuItem *dmi)
669 {
670 struct zone *zp = dmi->data;
671 int rv;
672
673 if (!confirm_zone(zp->filename))
674 return (DITEM_FAILURE | DITEM_RECREATE);
675
676 rv = install_zoneinfo(zp->filename);
677 return (rv);
678 }
679
680 static int
681 set_zone_whole_country(dialogMenuItem *dmi)
682 {
683 struct country *cp = dmi->data;
684 int rv;
685
686 if (!confirm_zone(cp->filename))
687 return (DITEM_FAILURE | DITEM_RECREATE);
688
689 rv = install_zoneinfo(cp->filename);
690 return (rv);
691 }
692
693 #endif
694
695 static int
696 install_zoneinfo_file(const char *zoneinfo_file)
697 {
698 char buf[1024];
699 char title[64], prompt[SILLY_BUFFER_SIZE];
700 struct stat sb;
701 ssize_t len;
702 int fd1, fd2, copymode;
703
704 if (lstat(path_localtime, &sb) < 0) {
705 /* Nothing there yet... */
706 copymode = 1;
707 } else if (S_ISLNK(sb.st_mode))
708 copymode = 0;
709 else
710 copymode = 1;
711
712 #ifdef VERBOSE
713 snprintf(title, sizeof(title), "Info");
714 if (copymode)
715 snprintf(prompt, sizeof(prompt),
716 "Copying %s to %s", zoneinfo_file, path_localtime);
717 else
718 snprintf(prompt, sizeof(prompt),
719 "Creating symbolic link %s to %s",
720 path_localtime, zoneinfo_file);
721 #ifdef HAVE_DIALOG
722 if (usedialog)
723 dialog_msgbox(title, prompt, 8, 72, 1);
724 else
725 #endif
726 fprintf(stderr, "%s\n", prompt);
727 #endif
728
729 if (reallydoit) {
730 if (copymode) {
731 fd1 = open(zoneinfo_file, O_RDONLY, 0);
732 if (fd1 < 0) {
733 snprintf(title, sizeof(title), "Error");
734 snprintf(prompt, sizeof(prompt),
735 "Could not open %s: %s", zoneinfo_file,
736 strerror(errno));
737 #ifdef HAVE_DIALOG
738 if (usedialog)
739 dialog_msgbox(title, prompt, 8, 72, 1);
740 else
741 #endif
742 fprintf(stderr, "%s\n", prompt);
743 return (DITEM_FAILURE | DITEM_RECREATE);
744 }
745
746 if (unlink(path_localtime) < 0 && errno != ENOENT) {
747 snprintf(prompt, sizeof(prompt),
748 "Could not delete %s: %s",
749 path_localtime, strerror(errno));
750 #ifdef HAVE_DIALOG
751 if (usedialog) {
752 snprintf(title, sizeof(title), "Error");
753 dialog_msgbox(title, prompt, 8, 72, 1);
754 } else
755 #endif
756 fprintf(stderr, "%s\n", prompt);
757 return (DITEM_FAILURE | DITEM_RECREATE);
758 }
759
760 fd2 = open(path_localtime, O_CREAT | O_EXCL | O_WRONLY,
761 S_IRUSR | S_IRGRP | S_IROTH);
762 if (fd2 < 0) {
763 snprintf(title, sizeof(title), "Error");
764 snprintf(prompt, sizeof(prompt),
765 "Could not open %s: %s",
766 path_localtime, strerror(errno));
767 #ifdef HAVE_DIALOG
768 if (usedialog)
769 dialog_msgbox(title, prompt, 8, 72, 1);
770 else
771 #endif
772 fprintf(stderr, "%s\n", prompt);
773 return (DITEM_FAILURE | DITEM_RECREATE);
774 }
775
776 while ((len = read(fd1, buf, sizeof(buf))) > 0)
777 if ((len = write(fd2, buf, len)) < 0)
778 break;
779
780 if (len == -1) {
781 snprintf(title, sizeof(title), "Error");
782 snprintf(prompt, sizeof(prompt),
783 "Error copying %s to %s %s", zoneinfo_file,
784 path_localtime, strerror(errno));
785 #ifdef HAVE_DIALOG
786 if (usedialog)
787 dialog_msgbox(title, prompt, 8, 72, 1);
788 else
789 #endif
790 fprintf(stderr, "%s\n", prompt);
791 /* Better to leave none than a corrupt one. */
792 unlink(path_localtime);
793 return (DITEM_FAILURE | DITEM_RECREATE);
794 }
795 close(fd1);
796 close(fd2);
797 } else {
798 if (access(zoneinfo_file, R_OK) != 0) {
799 snprintf(title, sizeof(title), "Error");
800 snprintf(prompt, sizeof(prompt),
801 "Cannot access %s: %s", zoneinfo_file,
802 strerror(errno));
803 #ifdef HAVE_DIALOG
804 if (usedialog)
805 dialog_msgbox(title, prompt, 8, 72, 1);
806 else
807 #endif
808 fprintf(stderr, "%s\n", prompt);
809 return (DITEM_FAILURE | DITEM_RECREATE);
810 }
811 if (unlink(path_localtime) < 0 && errno != ENOENT) {
812 snprintf(prompt, sizeof(prompt),
813 "Could not delete %s: %s",
814 path_localtime, strerror(errno));
815 #ifdef HAVE_DIALOG
816 if (usedialog) {
817 snprintf(title, sizeof(title), "Error");
818 dialog_msgbox(title, prompt, 8, 72, 1);
819 } else
820 #endif
821 fprintf(stderr, "%s\n", prompt);
822 return (DITEM_FAILURE | DITEM_RECREATE);
823 }
824 if (symlink(zoneinfo_file, path_localtime) < 0) {
825 snprintf(title, sizeof(title), "Error");
826 snprintf(prompt, sizeof(prompt),
827 "Cannot create symbolic link %s to %s: %s",
828 path_localtime, zoneinfo_file,
829 strerror(errno));
830 #ifdef HAVE_DIALOG
831 if (usedialog)
832 dialog_msgbox(title, prompt, 8, 72, 1);
833 else
834 #endif
835 fprintf(stderr, "%s\n", prompt);
836 return (DITEM_FAILURE | DITEM_RECREATE);
837 }
838 }
839
840 #ifdef VERBOSE
841 snprintf(title, sizeof(title), "Done");
842 if (copymode)
843 snprintf(prompt, sizeof(prompt),
844 "Copied timezone file from %s to %s",
845 zoneinfo_file, path_localtime);
846 else
847 snprintf(prompt, sizeof(prompt),
848 "Created symbolic link from %s to %s",
849 zoneinfo_file, path_localtime);
850 #ifdef HAVE_DIALOG
851 if (usedialog)
852 dialog_msgbox(title, prompt, 8, 72, 1);
853 else
854 #endif
855 fprintf(stderr, "%s\n", prompt);
856 #endif
857 } /* reallydoit */
858
859 return (DITEM_LEAVE_MENU);
860 }
861
862 static int
863 install_zoneinfo(const char *zoneinfo)
864 {
865 int rv;
866 FILE *f;
867 char path_zoneinfo_file[MAXPATHLEN + 2];
868
869 if ((size_t)snprintf(path_zoneinfo_file, sizeof(path_zoneinfo_file),
870 "%s/%s", path_zoneinfo, zoneinfo) >= sizeof(path_zoneinfo_file))
871 errx(1, "%s/%s name too long", path_zoneinfo, zoneinfo);
872 rv = install_zoneinfo_file(path_zoneinfo_file);
873
874 /* Save knowledge for later */
875 if (reallydoit && (rv & DITEM_FAILURE) == 0) {
876 if ((f = fopen(path_db, "w")) != NULL) {
877 fprintf(f, "%s\n", zoneinfo);
878 fclose(f);
879 }
880 }
881
882 return (rv);
883 }
884
885 static void
886 usage(void)
887 {
888
889 fprintf(stderr, "usage: tzsetup [-nrs] [-C chroot_directory]"
890 " [zoneinfo_file | zoneinfo_name]\n");
891 exit(1);
892 }
893
894 int
895 main(int argc, char **argv)
896 {
897 #ifdef HAVE_DIALOG
898 char title[64], prompt[128];
899 int fd;
900 #endif
901 int c, rv;
902 #ifdef HAVE_DIALOG
903 char vmm_guest[16] = "";
904 size_t len = sizeof(vmm_guest);
905 int skiputc;
906
907 skiputc = 0;
908
909 /* Default skiputc to 1 for VM guests */
910 if (sysctlbyname("kern.vmm_guest", vmm_guest, &len, NULL, 0) == 0 &&
911 strcmp(vmm_guest, "none") != 0)
912 skiputc = 1;
913 #endif
914
915 while ((c = getopt(argc, argv, "C:nrs")) != -1) {
916 switch(c) {
917 case 'C':
918 chrootenv = optarg;
919 break;
920 case 'n':
921 reallydoit = 0;
922 break;
923 case 'r':
924 reinstall = 1;
925 #ifdef HAVE_DIALOG
926 usedialog = 0;
927 #endif
928 break;
929 case 's':
930 #ifdef HAVE_DIALOG
931 skiputc = 1;
932 #endif
933 break;
934 default:
935 usage();
936 }
937 }
938
939 if (argc - optind > 1)
940 usage();
941
942 if (chrootenv == NULL) {
943 strcpy(path_zonetab, _PATH_ZONETAB);
944 strcpy(path_iso3166, _PATH_ISO3166);
945 strcpy(path_zoneinfo, _PATH_ZONEINFO);
946 strcpy(path_localtime, _PATH_LOCALTIME);
947 strcpy(path_db, _PATH_DB);
948 strcpy(path_wall_cmos_clock, _PATH_WALL_CMOS_CLOCK);
949 } else {
950 sprintf(path_zonetab, "%s/%s", chrootenv, _PATH_ZONETAB);
951 sprintf(path_iso3166, "%s/%s", chrootenv, _PATH_ISO3166);
952 sprintf(path_zoneinfo, "%s/%s", chrootenv, _PATH_ZONEINFO);
953 sprintf(path_localtime, "%s/%s", chrootenv, _PATH_LOCALTIME);
954 sprintf(path_db, "%s/%s", chrootenv, _PATH_DB);
955 sprintf(path_wall_cmos_clock, "%s/%s", chrootenv,
956 _PATH_WALL_CMOS_CLOCK);
957 }
958
959 /* Override the user-supplied umask. */
960 umask(S_IWGRP | S_IWOTH);
961
962 if (reinstall == 1) {
963 FILE *f;
964 char zoneinfo[MAXPATHLEN];
965
966 if ((f = fopen(path_db, "r")) != NULL) {
967 if (fgets(zoneinfo, sizeof(zoneinfo), f) != NULL) {
968 zoneinfo[sizeof(zoneinfo) - 1] = 0;
969 if (strlen(zoneinfo) > 0) {
970 zoneinfo[strlen(zoneinfo) - 1] = 0;
971 rv = install_zoneinfo(zoneinfo);
972 exit(rv & ~DITEM_LEAVE_MENU);
973 }
974 errx(1, "Error reading %s.\n", path_db);
975 }
976 fclose(f);
977 errx(1,
978 "Unable to determine earlier installed zoneinfo "
979 "name. Check %s", path_db);
980 }
981 errx(1, "Cannot open %s for reading. Does it exist?", path_db);
982 }
983
984 /*
985 * If the arguments on the command-line do not specify a file,
986 * then interpret it as a zoneinfo name
987 */
988 if (optind == argc - 1) {
989 struct stat sb;
990
991 if (stat(argv[optind], &sb) != 0) {
992 #ifdef HAVE_DIALOG
993 usedialog = 0;
994 #endif
995 rv = install_zoneinfo(argv[optind]);
996 exit(rv & ~DITEM_LEAVE_MENU);
997 }
998 /* FALLTHROUGH */
999 }
1000 #ifdef HAVE_DIALOG
1001
1002 read_iso3166_table();
1003 read_zones();
1004 sort_countries();
1005 make_menus();
1006
1007 init_dialog(stdin, stdout);
1008 if (skiputc == 0) {
1009 DIALOG_VARS save_vars;
1010 int yesno;
1011
1012 snprintf(title, sizeof(title),
1013 "Select local or UTC (Greenwich Mean Time) clock");
1014 snprintf(prompt, sizeof(prompt),
1015 "Is this machine's CMOS clock set to UTC? "
1016 "If it is set to local time,\n"
1017 "or you don't know, please choose NO here!");
1018 dlg_save_vars(&save_vars);
1019 yesno = dialog_yesno(title, prompt, 7, 73);
1020 dlg_restore_vars(&save_vars);
1021 if (!yesno) {
1022 if (reallydoit)
1023 unlink(path_wall_cmos_clock);
1024 } else {
1025 if (reallydoit) {
1026 fd = open(path_wall_cmos_clock,
1027 O_WRONLY | O_CREAT | O_TRUNC,
1028 S_IRUSR | S_IRGRP | S_IROTH);
1029 if (fd < 0) {
1030 end_dialog();
1031 err(1, "create %s",
1032 path_wall_cmos_clock);
1033 }
1034 close(fd);
1035 }
1036 }
1037 dlg_clear();
1038 }
1039 if (optind == argc - 1) {
1040 snprintf(title, sizeof(title), "Default timezone provided");
1041 snprintf(prompt, sizeof(prompt),
1042 "\nUse the default `%s' zone?", argv[optind]);
1043 if (!dialog_yesno(title, prompt, 7, 72)) {
1044 rv = install_zoneinfo_file(argv[optind]);
1045 dlg_clear();
1046 end_dialog();
1047 exit(rv & ~DITEM_LEAVE_MENU);
1048 }
1049 dlg_clear();
1050 }
1051 snprintf(title, sizeof(title), "Time Zone Selector");
1052 snprintf(prompt, sizeof(prompt), "Select a region");
1053 xdialog_menu(title, prompt, -1, -1, NCONTINENTS, NCONTINENTS,
1054 continents);
1055
1056 dlg_clear();
1057 end_dialog();
1058 #else
1059 usage();
1060 #endif
1061 return (0);
1062 }
DragonFly BSD