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 } 1063