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 30 /* 31 * Second attempt at a `tzmenu' program, using the separate description 32 * files provided in newer tzdata releases. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <err.h> 39 #include <errno.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <time.h> 44 #include <unistd.h> 45 46 #include <sys/fcntl.h> 47 #include <sys/param.h> 48 #include <sys/queue.h> 49 #include <sys/stat.h> 50 #include <sys/sysctl.h> 51 52 #include <dialog.h> 53 54 #define _PATH_ZONETAB "/usr/share/zoneinfo/zone.tab" 55 #define _PATH_ISO3166 "/usr/share/misc/iso3166" 56 #define _PATH_ZONEINFO "/usr/share/zoneinfo" 57 #define _PATH_LOCALTIME "/etc/localtime" 58 #define _PATH_DB "/var/db/zoneinfo" 59 #define _PATH_WALL_CMOS_CLOCK "/etc/wall_cmos_clock" 60 61 #ifdef PATH_MAX 62 #define SILLY_BUFFER_SIZE 2*PATH_MAX 63 #else 64 #warning "Somebody needs to fix this to dynamically size this buffer." 65 #define SILLY_BUFFER_SIZE 2048 66 #endif 67 68 /* special return codes for `fire' actions */ 69 #define DITEM_FAILURE 1 70 71 /* flags - returned in upper 16 bits of return status */ 72 #define DITEM_LEAVE_MENU (1 << 16) 73 #define DITEM_RECREATE (1 << 18) 74 75 /* for use in describing more exotic behaviors */ 76 typedef struct dialogMenuItem { 77 char *prompt; 78 char *title; 79 int (*fire)(struct dialogMenuItem *self); 80 void *data; 81 } dialogMenuItem; 82 83 static int 84 xdialog_count_rows(const char *p) 85 { 86 int rows = 0; 87 88 while ((p = strchr(p, '\n')) != NULL) { 89 p++; 90 if (*p == '\0') 91 break; 92 rows++; 93 } 94 95 return rows ? rows : 1; 96 } 97 98 static int 99 xdialog_count_columns(const char *p) 100 { 101 int len; 102 int max_len = 0; 103 const char *q; 104 105 for (; (q = strchr(p, '\n')) != NULL; p = q + 1) { 106 len = q - p; 107 max_len = MAX(max_len, len); 108 } 109 110 len = strlen(p); 111 max_len = MAX(max_len, len); 112 return max_len; 113 } 114 115 static int 116 xdialog_menu(const char *title, const char *cprompt, int height, int width, 117 int menu_height, int item_no, dialogMenuItem *ditems) 118 { 119 int i, result, choice = 0; 120 DIALOG_LISTITEM *listitems; 121 DIALOG_VARS save_vars; 122 123 dlg_save_vars(&save_vars); 124 125 /* initialize list items */ 126 listitems = dlg_calloc(DIALOG_LISTITEM, item_no + 1); 127 assert_ptr(listitems, "xdialog_menu"); 128 for (i = 0; i < item_no; i++) { 129 listitems[i].name = ditems[i].prompt; 130 listitems[i].text = ditems[i].title; 131 } 132 133 /* calculate height */ 134 if (height < 0) 135 height = xdialog_count_rows(cprompt) + menu_height + 4 + 2; 136 if (height > LINES) 137 height = LINES; 138 139 /* calculate width */ 140 if (width < 0) { 141 int tag_x = 0; 142 143 for (i = 0; i < item_no; i++) { 144 int j, l; 145 146 l = strlen(listitems[i].name); 147 for (j = 0; j < item_no; j++) { 148 int k = strlen(listitems[j].text); 149 tag_x = MAX(tag_x, l + k + 2); 150 } 151 } 152 width = MAX(xdialog_count_columns(cprompt), title != NULL ? xdialog_count_columns(title) : 0); 153 width = MAX(width, tag_x + 4) + 4; 154 } 155 width = MAX(width, 24); 156 if (width > COLS) 157 width = COLS; 158 159 again: 160 dialog_vars.default_item = listitems[choice].name; 161 result = dlg_menu(title, cprompt, height, width, 162 menu_height, item_no, listitems, &choice, NULL); 163 switch (result) { 164 case DLG_EXIT_ESC: 165 result = -1; 166 break; 167 case DLG_EXIT_OK: 168 if (ditems[choice].fire != NULL) { 169 int status; 170 171 status = ditems[choice].fire(ditems + choice); 172 if (status & DITEM_RECREATE) { 173 dlg_clear(); 174 goto again; 175 } 176 } 177 result = 0; 178 break; 179 case DLG_EXIT_CANCEL: 180 default: 181 result = 1; 182 break; 183 } 184 185 free(listitems); 186 dlg_restore_vars(&save_vars); 187 return result; 188 } 189 190 static char path_zonetab[MAXPATHLEN], path_iso3166[MAXPATHLEN], 191 path_zoneinfo[MAXPATHLEN], path_localtime[MAXPATHLEN], 192 path_db[MAXPATHLEN], path_wall_cmos_clock[MAXPATHLEN]; 193 194 static int reallydoit = 1; 195 static int reinstall = 0; 196 static int usedialog = 1; 197 static char *chrootenv = NULL; 198 199 static void usage(void); 200 static int confirm_zone(const char *filename); 201 static int continent_country_menu(dialogMenuItem *); 202 static int install_zoneinfo_file(const char *zoneinfo_file); 203 static int set_zone_multi(dialogMenuItem *); 204 static int set_zone_whole_country(dialogMenuItem *); 205 static int set_zone_menu(dialogMenuItem *); 206 static int set_zone_utc(void); 207 208 struct continent { 209 dialogMenuItem *menu; 210 int nitems; 211 }; 212 213 static struct continent africa, america, antarctica, arctic, asia, atlantic; 214 static struct continent australia, europe, indian, pacific, utc; 215 216 static struct continent_names { 217 const char *name; 218 struct continent *continent; 219 } continent_names[] = { 220 { "Africa", &africa }, 221 { "America", &america }, 222 { "Antarctica", &antarctica }, 223 { "Arctic", &arctic }, 224 { "Asia", &asia }, 225 { "Atlantic", &atlantic }, 226 { "Australia", &australia }, 227 { "Europe", &europe }, 228 { "Indian", &indian }, 229 { "Pacific", &pacific }, 230 { "UTC", &utc } 231 }; 232 233 static struct continent_items { 234 char prompt[2]; 235 char title[30]; 236 } continent_items[] = { 237 { "1", "Africa" }, 238 { "2", "America -- North and South" }, 239 { "3", "Antarctica" }, 240 { "4", "Arctic Ocean" }, 241 { "5", "Asia" }, 242 { "6", "Atlantic Ocean" }, 243 { "7", "Australia" }, 244 { "8", "Europe" }, 245 { "9", "Indian Ocean" }, 246 { "0", "Pacific Ocean" }, 247 { "a", "UTC" } 248 }; 249 250 #define NCONTINENTS \ 251 (int)((sizeof(continent_items)) / (sizeof(continent_items[0]))) 252 static dialogMenuItem continents[NCONTINENTS]; 253 254 #define OCEANP(x) ((x) == 3 || (x) == 5 || (x) == 8 || (x) == 9) 255 256 static int 257 continent_country_menu(dialogMenuItem *continent) 258 { 259 char title[64], prompt[64]; 260 struct continent *contp = continent->data; 261 int isocean = OCEANP(continent - continents); 262 int menulen; 263 int rv; 264 265 if (strcmp(continent->title, "UTC") == 0) 266 return set_zone_utc(); 267 268 /* Short cut -- if there's only one country, don't post a menu. */ 269 if (contp->nitems == 1) 270 return (contp->menu[0].fire(&contp->menu[0])); 271 272 /* It's amazing how much good grammar really matters... */ 273 if (!isocean) { 274 snprintf(title, sizeof(title), "Countries in %s", 275 continent->title); 276 snprintf(prompt, sizeof(prompt), "Select a country or region"); 277 } else { 278 snprintf(title, sizeof(title), "Islands and groups in the %s", 279 continent->title); 280 snprintf(prompt, sizeof(prompt), "Select an island or group"); 281 } 282 283 menulen = contp->nitems < 16 ? contp->nitems : 16; 284 rv = xdialog_menu(title, prompt, -1, -1, menulen, contp->nitems, 285 contp->menu); 286 if (rv == 0) 287 return (DITEM_LEAVE_MENU); 288 return (DITEM_RECREATE); 289 } 290 291 static struct continent * 292 find_continent(const char *name) 293 { 294 int i; 295 296 for (i = 0; i < NCONTINENTS; i++) 297 if (strcmp(name, continent_names[i].name) == 0) 298 return (continent_names[i].continent); 299 return (0); 300 } 301 302 struct country { 303 char *name; 304 char *tlc; 305 int nzones; 306 char *filename; /* use iff nzones < 0 */ 307 struct continent *continent; /* use iff nzones < 0 */ 308 TAILQ_HEAD(, zone) zones; /* use iff nzones > 0 */ 309 dialogMenuItem *submenu; /* use iff nzones > 0 */ 310 }; 311 312 struct zone { 313 TAILQ_ENTRY(zone) link; 314 char *descr; 315 char *filename; 316 struct continent *continent; 317 }; 318 319 /* 320 * This is the easiest organization... we use ISO 3166 country codes, 321 * of the two-letter variety, so we just size this array to suit. 322 * Beats worrying about dynamic allocation. 323 */ 324 #define NCOUNTRIES (26 * 26) 325 static struct country countries[NCOUNTRIES]; 326 327 #define CODE2INT(s) ((s[0] - 'A') * 26 + (s[1] - 'A')) 328 329 /* 330 * Read the ISO 3166 country code database in _PATH_ISO3166 331 * (/usr/share/misc/iso3166). On error, exit via err(3). 332 */ 333 static void 334 read_iso3166_table(void) 335 { 336 FILE *fp; 337 struct country *cp; 338 size_t len; 339 char *s, *t, *name; 340 int lineno; 341 342 fp = fopen(path_iso3166, "r"); 343 if (!fp) 344 err(1, "%s", path_iso3166); 345 lineno = 0; 346 347 while ((s = fgetln(fp, &len)) != NULL) { 348 lineno++; 349 if (s[len - 1] != '\n') 350 errx(1, "%s:%d: invalid format", path_iso3166, lineno); 351 s[len - 1] = '\0'; 352 if (s[0] == '#' || strspn(s, " \t") == len - 1) 353 continue; 354 355 /* Isolate the two-letter code. */ 356 t = strsep(&s, "\t"); 357 if (t == NULL || strlen(t) != 2) 358 errx(1, "%s:%d: invalid format", path_iso3166, lineno); 359 if (t[0] < 'A' || t[0] > 'Z' || t[1] < 'A' || t[1] > 'Z') 360 errx(1, "%s:%d: invalid code `%s'", path_iso3166, 361 lineno, t); 362 363 /* Now skip past the three-letter and numeric codes. */ 364 name = strsep(&s, "\t"); /* 3-let */ 365 if (name == NULL || strlen(name) != 3) 366 errx(1, "%s:%d: invalid format", path_iso3166, lineno); 367 name = strsep(&s, "\t"); /* numeric */ 368 if (name == NULL || strlen(name) != 3) 369 errx(1, "%s:%d: invalid format", path_iso3166, lineno); 370 371 name = s; 372 373 cp = &countries[CODE2INT(t)]; 374 if (cp->name) 375 errx(1, "%s:%d: country code `%s' multiply defined: %s", 376 path_iso3166, lineno, t, cp->name); 377 cp->name = strdup(name); 378 if (cp->name == NULL) 379 errx(1, "malloc failed"); 380 cp->tlc = strdup(t); 381 if (cp->tlc == NULL) 382 errx(1, "malloc failed"); 383 } 384 385 fclose(fp); 386 } 387 388 static void 389 add_zone_to_country(int lineno, const char *tlc, const char *descr, 390 const char *file, struct continent *cont) 391 { 392 struct zone *zp; 393 struct country *cp; 394 395 if (tlc[0] < 'A' || tlc[0] > 'Z' || tlc[1] < 'A' || tlc[1] > 'Z') 396 errx(1, "%s:%d: country code `%s' invalid", path_zonetab, 397 lineno, tlc); 398 399 cp = &countries[CODE2INT(tlc)]; 400 if (cp->name == 0) 401 errx(1, "%s:%d: country code `%s' unknown", path_zonetab, 402 lineno, tlc); 403 404 if (descr) { 405 if (cp->nzones < 0) 406 errx(1, "%s:%d: conflicting zone definition", 407 path_zonetab, lineno); 408 409 zp = malloc(sizeof(*zp)); 410 if (zp == NULL) 411 errx(1, "malloc(%zu)", sizeof(*zp)); 412 413 if (cp->nzones == 0) 414 TAILQ_INIT(&cp->zones); 415 416 zp->descr = strdup(descr); 417 if (zp->descr == NULL) 418 errx(1, "malloc failed"); 419 zp->filename = strdup(file); 420 if (zp->filename == NULL) 421 errx(1, "malloc failed"); 422 zp->continent = cont; 423 TAILQ_INSERT_TAIL(&cp->zones, zp, link); 424 cp->nzones++; 425 } else { 426 if (cp->nzones > 0) 427 errx(1, "%s:%d: zone must have description", 428 path_zonetab, lineno); 429 if (cp->nzones < 0) 430 errx(1, "%s:%d: zone multiply defined", 431 path_zonetab, lineno); 432 cp->nzones = -1; 433 cp->filename = strdup(file); 434 if (cp->filename == NULL) 435 errx(1, "malloc failed"); 436 cp->continent = cont; 437 } 438 } 439 440 /* 441 * This comparison function intentionally sorts all of the null-named 442 * ``countries''---i.e., the codes that don't correspond to a real 443 * country---to the end. Everything else is lexical by country name. 444 */ 445 static int 446 compare_countries(const void *xa, const void *xb) 447 { 448 const struct country *a = xa, *b = xb; 449 450 if (a->name == 0 && b->name == 0) 451 return (0); 452 if (a->name == 0 && b->name != 0) 453 return (1); 454 if (b->name == 0) 455 return (-1); 456 457 return (strcmp(a->name, b->name)); 458 } 459 460 /* 461 * This must be done AFTER all zone descriptions are read, since it breaks 462 * CODE2INT(). 463 */ 464 static void 465 sort_countries(void) 466 { 467 468 qsort(countries, NCOUNTRIES, sizeof(countries[0]), compare_countries); 469 } 470 471 static void 472 read_zones(void) 473 { 474 char contbuf[16]; 475 FILE *fp; 476 struct continent *cont; 477 size_t len; 478 char *line, *tlc, *file, *descr, *p; 479 int lineno; 480 481 fp = fopen(path_zonetab, "r"); 482 if (!fp) 483 err(1, "%s", path_zonetab); 484 lineno = 0; 485 486 while ((line = fgetln(fp, &len)) != NULL) { 487 lineno++; 488 if (line[len - 1] != '\n') 489 errx(1, "%s:%d: invalid format", path_zonetab, lineno); 490 line[len - 1] = '\0'; 491 if (line[0] == '#') 492 continue; 493 494 tlc = strsep(&line, "\t"); 495 if (strlen(tlc) != 2) 496 errx(1, "%s:%d: invalid country code `%s'", 497 path_zonetab, lineno, tlc); 498 /* coord = */ strsep(&line, "\t"); /* Unused */ 499 file = strsep(&line, "\t"); 500 p = strchr(file, '/'); 501 if (p == NULL) 502 errx(1, "%s:%d: invalid zone name `%s'", path_zonetab, 503 lineno, file); 504 contbuf[0] = '\0'; 505 strncat(contbuf, file, p - file); 506 cont = find_continent(contbuf); 507 if (!cont) 508 errx(1, "%s:%d: invalid region `%s'", path_zonetab, 509 lineno, contbuf); 510 511 descr = (line != NULL && *line != '\0') ? line : NULL; 512 513 add_zone_to_country(lineno, tlc, descr, file, cont); 514 } 515 fclose(fp); 516 } 517 518 static void 519 make_menus(void) 520 { 521 struct country *cp; 522 struct zone *zp, *zp2; 523 struct continent *cont; 524 dialogMenuItem *dmi; 525 int i; 526 527 /* 528 * First, count up all the countries in each continent/ocean. 529 * Be careful to count those countries which have multiple zones 530 * only once for each. NB: some countries are in multiple 531 * continents/oceans. 532 */ 533 for (cp = countries; cp->name; cp++) { 534 if (cp->nzones == 0) 535 continue; 536 if (cp->nzones < 0) { 537 cp->continent->nitems++; 538 } else { 539 TAILQ_FOREACH(zp, &cp->zones, link) { 540 cont = zp->continent; 541 for (zp2 = TAILQ_FIRST(&cp->zones); 542 zp2->continent != cont; 543 zp2 = TAILQ_NEXT(zp2, link)) 544 ; 545 if (zp2 == zp) 546 zp->continent->nitems++; 547 } 548 } 549 } 550 551 /* 552 * Now allocate memory for the country menus and initialize 553 * continent menus. We set nitems back to zero so that we can 554 * use it for counting again when we actually build the menus. 555 */ 556 memset(continents, 0, sizeof(continents)); 557 for (i = 0; i < NCONTINENTS; i++) { 558 continent_names[i].continent->menu = 559 malloc(sizeof(dialogMenuItem) * 560 continent_names[i].continent->nitems); 561 if (continent_names[i].continent->menu == NULL) 562 errx(1, "malloc for continent menu"); 563 continent_names[i].continent->nitems = 0; 564 continents[i].prompt = continent_items[i].prompt; 565 continents[i].title = continent_items[i].title; 566 continents[i].fire = continent_country_menu; 567 continents[i].data = continent_names[i].continent; 568 } 569 570 /* 571 * Now that memory is allocated, create the menu items for 572 * each continent. For multiple-zone countries, also create 573 * the country's zone submenu. 574 */ 575 for (cp = countries; cp->name; cp++) { 576 if (cp->nzones == 0) 577 continue; 578 if (cp->nzones < 0) { 579 dmi = &cp->continent->menu[cp->continent->nitems]; 580 memset(dmi, 0, sizeof(*dmi)); 581 asprintf(&dmi->prompt, "%d", ++cp->continent->nitems); 582 dmi->title = cp->name; 583 dmi->fire = set_zone_whole_country; 584 dmi->data = cp; 585 } else { 586 cp->submenu = malloc(cp->nzones * sizeof(*dmi)); 587 if (cp->submenu == 0) 588 errx(1, "malloc for submenu"); 589 cp->nzones = 0; 590 TAILQ_FOREACH(zp, &cp->zones, link) { 591 cont = zp->continent; 592 dmi = &cp->submenu[cp->nzones]; 593 memset(dmi, 0, sizeof(*dmi)); 594 asprintf(&dmi->prompt, "%d", ++cp->nzones); 595 dmi->title = zp->descr; 596 dmi->fire = set_zone_multi; 597 dmi->data = zp; 598 599 for (zp2 = TAILQ_FIRST(&cp->zones); 600 zp2->continent != cont; 601 zp2 = TAILQ_NEXT(zp2, link)) 602 ; 603 if (zp2 != zp) 604 continue; 605 606 dmi = &cont->menu[cont->nitems]; 607 memset(dmi, 0, sizeof(*dmi)); 608 asprintf(&dmi->prompt, "%d", ++cont->nitems); 609 dmi->title = cp->name; 610 dmi->fire = set_zone_menu; 611 dmi->data = cp; 612 } 613 } 614 } 615 } 616 617 static int 618 set_zone_menu(dialogMenuItem *dmi) 619 { 620 char title[64], prompt[64]; 621 struct country *cp = dmi->data; 622 int menulen; 623 int rv; 624 625 snprintf(title, sizeof(title), "%s Time Zones", cp->name); 626 snprintf(prompt, sizeof(prompt), 627 "Select a zone which observes the same time as your locality."); 628 menulen = cp->nzones < 16 ? cp->nzones : 16; 629 rv = xdialog_menu(title, prompt, -1, -1, menulen, cp->nzones, 630 cp->submenu); 631 if (rv != 0) 632 return (DITEM_RECREATE); 633 return (DITEM_LEAVE_MENU); 634 } 635 636 int 637 set_zone_utc(void) 638 { 639 if (!confirm_zone(NULL)) 640 return (DITEM_FAILURE | DITEM_RECREATE); 641 642 return (install_zoneinfo_file(NULL)); 643 } 644 645 static int 646 install_zoneinfo_file(const char *zoneinfo_file) 647 { 648 char buf[1024]; 649 char title[64], prompt[SILLY_BUFFER_SIZE]; 650 struct stat sb; 651 ssize_t len; 652 int fd1, fd2, copymode; 653 654 if (lstat(path_localtime, &sb) < 0) { 655 /* Nothing there yet... */ 656 copymode = 1; 657 } else if (S_ISLNK(sb.st_mode)) 658 copymode = 0; 659 else 660 copymode = 1; 661 662 #ifdef VERBOSE 663 snprintf(title, sizeof(title), "Info"); 664 if (zoneinfo_file == NULL) 665 snprintf(prompt, sizeof(prompt), 666 "Removing %s", path_localtime); 667 else if (copymode) 668 snprintf(prompt, sizeof(prompt), 669 "Copying %s to %s", zoneinfo_file, path_localtime); 670 else 671 snprintf(prompt, sizeof(prompt), 672 "Creating symbolic link %s to %s", 673 path_localtime, zoneinfo_file); 674 if (usedialog) 675 dialog_msgbox(title, prompt, 8, 72, 1); 676 else 677 fprintf(stderr, "%s\n", prompt); 678 #endif 679 680 if (reallydoit) { 681 if (zoneinfo_file == NULL) { 682 if (unlink(path_localtime) < 0 && errno != ENOENT) { 683 snprintf(title, sizeof(title), "Error"); 684 snprintf(prompt, sizeof(prompt), 685 "Could not delete %s: %s", path_localtime, 686 strerror(errno)); 687 if (usedialog) 688 dialog_msgbox(title, prompt, 8, 72, 1); 689 else 690 fprintf(stderr, "%s\n", prompt); 691 692 return (DITEM_FAILURE | DITEM_RECREATE); 693 } 694 if (unlink(path_db) < 0 && errno != ENOENT) { 695 snprintf(title, sizeof(title), "Error"); 696 snprintf(prompt, sizeof(prompt), 697 "Could not delete %s: %s", path_db, 698 strerror(errno)); 699 if (usedialog) 700 dialog_msgbox(title, prompt, 8, 72, 1); 701 else 702 fprintf(stderr, "%s\n", prompt); 703 704 return (DITEM_FAILURE | DITEM_RECREATE); 705 } 706 #ifdef VERBOSE 707 snprintf(title, sizeof(title), "Done"); 708 snprintf(prompt, sizeof(prompt), 709 "Removed %s", path_localtime); 710 if (usedialog) 711 dialog_msgbox(title, prompt, 8, 72, 1); 712 else 713 fprintf(stderr, "%s\n", prompt); 714 #endif 715 return (DITEM_LEAVE_MENU); 716 } 717 718 if (copymode) { 719 fd1 = open(zoneinfo_file, O_RDONLY, 0); 720 if (fd1 < 0) { 721 snprintf(title, sizeof(title), "Error"); 722 snprintf(prompt, sizeof(prompt), 723 "Could not open %s: %s", zoneinfo_file, 724 strerror(errno)); 725 if (usedialog) 726 dialog_msgbox(title, prompt, 8, 72, 1); 727 else 728 fprintf(stderr, "%s\n", prompt); 729 return (DITEM_FAILURE | DITEM_RECREATE); 730 } 731 732 if (unlink(path_localtime) < 0 && errno != ENOENT) { 733 snprintf(prompt, sizeof(prompt), 734 "Could not unlink %s: %s", 735 path_localtime, strerror(errno)); 736 if (usedialog) { 737 snprintf(title, sizeof(title), "Error"); 738 dialog_msgbox(title, prompt, 8, 72, 1); 739 } else 740 fprintf(stderr, "%s\n", prompt); 741 return (DITEM_FAILURE | DITEM_RECREATE); 742 } 743 744 fd2 = open(path_localtime, O_CREAT | O_EXCL | O_WRONLY, 745 S_IRUSR | S_IRGRP | S_IROTH); 746 if (fd2 < 0) { 747 snprintf(title, sizeof(title), "Error"); 748 snprintf(prompt, sizeof(prompt), 749 "Could not open %s: %s", 750 path_localtime, strerror(errno)); 751 if (usedialog) 752 dialog_msgbox(title, prompt, 8, 72, 1); 753 else 754 fprintf(stderr, "%s\n", prompt); 755 return (DITEM_FAILURE | DITEM_RECREATE); 756 } 757 758 while ((len = read(fd1, buf, sizeof(buf))) > 0) 759 if ((len = write(fd2, buf, len)) < 0) 760 break; 761 762 if (len == -1) { 763 snprintf(title, sizeof(title), "Error"); 764 snprintf(prompt, sizeof(prompt), 765 "Error copying %s to %s %s", zoneinfo_file, 766 path_localtime, strerror(errno)); 767 if (usedialog) 768 dialog_msgbox(title, prompt, 8, 72, 1); 769 else 770 fprintf(stderr, "%s\n", prompt); 771 /* Better to leave none than a corrupt one. */ 772 unlink(path_localtime); 773 return (DITEM_FAILURE | DITEM_RECREATE); 774 } 775 close(fd1); 776 close(fd2); 777 } else { 778 if (access(zoneinfo_file, R_OK) != 0) { 779 snprintf(title, sizeof(title), "Error"); 780 snprintf(prompt, sizeof(prompt), 781 "Cannot access %s: %s", zoneinfo_file, 782 strerror(errno)); 783 if (usedialog) 784 dialog_msgbox(title, prompt, 8, 72, 1); 785 else 786 fprintf(stderr, "%s\n", prompt); 787 return (DITEM_FAILURE | DITEM_RECREATE); 788 } 789 if (unlink(path_localtime) < 0 && errno != ENOENT) { 790 snprintf(prompt, sizeof(prompt), 791 "Could not unlink %s: %s", 792 path_localtime, strerror(errno)); 793 if (usedialog) { 794 snprintf(title, sizeof(title), "Error"); 795 dialog_msgbox(title, prompt, 8, 72, 1); 796 } else 797 fprintf(stderr, "%s\n", prompt); 798 return (DITEM_FAILURE | DITEM_RECREATE); 799 } 800 if (symlink(zoneinfo_file, path_localtime) < 0) { 801 snprintf(title, sizeof(title), "Error"); 802 snprintf(prompt, sizeof(prompt), 803 "Cannot create symbolic link %s to %s: %s", 804 path_localtime, zoneinfo_file, 805 strerror(errno)); 806 if (usedialog) 807 dialog_msgbox(title, prompt, 8, 72, 1); 808 else 809 fprintf(stderr, "%s\n", prompt); 810 return (DITEM_FAILURE | DITEM_RECREATE); 811 } 812 } 813 814 #ifdef VERBOSE 815 snprintf(title, sizeof(title), "Done"); 816 if (copymode) 817 snprintf(prompt, sizeof(prompt), 818 "Copied timezone file from %s to %s", 819 zoneinfo_file, path_localtime); 820 else 821 snprintf(prompt, sizeof(prompt), 822 "Created symbolic link from %s to %s", 823 zoneinfo_file, path_localtime); 824 if (usedialog) 825 dialog_msgbox(title, prompt, 8, 72, 1); 826 else 827 fprintf(stderr, "%s\n", prompt); 828 #endif 829 } /* reallydoit */ 830 831 return (DITEM_LEAVE_MENU); 832 } 833 834 static int 835 install_zoneinfo(const char *zoneinfo) 836 { 837 int rv; 838 FILE *f; 839 char path_zoneinfo_file[MAXPATHLEN]; 840 841 sprintf(path_zoneinfo_file, "%s/%s", path_zoneinfo, zoneinfo); 842 rv = install_zoneinfo_file(path_zoneinfo_file); 843 844 /* Save knowledge for later */ 845 if (reallydoit && (rv & DITEM_FAILURE) == 0) { 846 if ((f = fopen(path_db, "w")) != NULL) { 847 fprintf(f, "%s\n", zoneinfo); 848 fclose(f); 849 } 850 } 851 852 return (rv); 853 } 854 855 static int 856 confirm_zone(const char *filename) 857 { 858 char title[64], prompt[64]; 859 time_t t = time(0); 860 struct tm *tm; 861 int rv; 862 863 setenv("TZ", filename == NULL ? "" : filename, 1); 864 tzset(); 865 tm = localtime(&t); 866 867 snprintf(title, sizeof(title), "Confirmation"); 868 snprintf(prompt, sizeof(prompt), 869 "Does the abbreviation `%s' look reasonable?", tm->tm_zone); 870 rv = !dialog_yesno(title, prompt, 5, 72); 871 return (rv); 872 } 873 874 static int 875 set_zone_multi(dialogMenuItem *dmi) 876 { 877 struct zone *zp = dmi->data; 878 int rv; 879 880 if (!confirm_zone(zp->filename)) 881 return (DITEM_FAILURE | DITEM_RECREATE); 882 883 rv = install_zoneinfo(zp->filename); 884 return (rv); 885 } 886 887 static int 888 set_zone_whole_country(dialogMenuItem *dmi) 889 { 890 struct country *cp = dmi->data; 891 int rv; 892 893 if (!confirm_zone(cp->filename)) 894 return (DITEM_FAILURE | DITEM_RECREATE); 895 896 rv = install_zoneinfo(cp->filename); 897 return (rv); 898 } 899 900 static void 901 usage(void) 902 { 903 904 fprintf(stderr, "usage: tzsetup [-nrs] [-C chroot_directory]" 905 " [zoneinfo_file | zoneinfo_name]\n"); 906 exit(1); 907 } 908 909 int 910 main(int argc, char **argv) 911 { 912 char title[64], prompt[128]; 913 int c, fd, rv, skiputc; 914 char vm_guest[16] = ""; 915 size_t len = sizeof(vm_guest); 916 917 skiputc = 0; 918 919 /* Default skiputc to 1 for VM guests */ 920 if (sysctlbyname("kern.vm_guest", vm_guest, &len, NULL, 0) == 0 && 921 strcmp(vm_guest, "none") != 0) 922 skiputc = 1; 923 924 while ((c = getopt(argc, argv, "C:nrs")) != -1) { 925 switch(c) { 926 case 'C': 927 chrootenv = optarg; 928 break; 929 case 'n': 930 reallydoit = 0; 931 break; 932 case 'r': 933 reinstall = 1; 934 usedialog = 0; 935 break; 936 case 's': 937 skiputc = 1; 938 break; 939 default: 940 usage(); 941 } 942 } 943 944 if (argc - optind > 1) 945 usage(); 946 947 if (chrootenv == NULL) { 948 strcpy(path_zonetab, _PATH_ZONETAB); 949 strcpy(path_iso3166, _PATH_ISO3166); 950 strcpy(path_zoneinfo, _PATH_ZONEINFO); 951 strcpy(path_localtime, _PATH_LOCALTIME); 952 strcpy(path_db, _PATH_DB); 953 strcpy(path_wall_cmos_clock, _PATH_WALL_CMOS_CLOCK); 954 } else { 955 sprintf(path_zonetab, "%s/%s", chrootenv, _PATH_ZONETAB); 956 sprintf(path_iso3166, "%s/%s", chrootenv, _PATH_ISO3166); 957 sprintf(path_zoneinfo, "%s/%s", chrootenv, _PATH_ZONEINFO); 958 sprintf(path_localtime, "%s/%s", chrootenv, _PATH_LOCALTIME); 959 sprintf(path_db, "%s/%s", chrootenv, _PATH_DB); 960 sprintf(path_wall_cmos_clock, "%s/%s", chrootenv, 961 _PATH_WALL_CMOS_CLOCK); 962 } 963 964 965 /* Override the user-supplied umask. */ 966 (void)umask(S_IWGRP | S_IWOTH); 967 968 if (reinstall == 1) { 969 FILE *f; 970 char zoneinfo[MAXPATHLEN]; 971 972 if ((f = fopen(path_db, "r")) != NULL) { 973 if (fgets(zoneinfo, sizeof(zoneinfo), f) != NULL) { 974 zoneinfo[sizeof(zoneinfo) - 1] = 0; 975 if (strlen(zoneinfo) > 0) { 976 zoneinfo[strlen(zoneinfo) - 1] = 0; 977 rv = install_zoneinfo(zoneinfo); 978 exit(rv & ~DITEM_LEAVE_MENU); 979 } 980 errx(1, "Error reading %s.\n", path_db); 981 } 982 fclose(f); 983 errx(1, 984 "Unable to determine earlier installed zoneinfo " 985 "name. Check %s", path_db); 986 } 987 errx(1, "Cannot open %s for reading. Does it exist?", path_db); 988 } 989 990 /* 991 * If the arguments on the command-line do not specify a file, 992 * then interpret it as a zoneinfo name 993 */ 994 if (optind == argc - 1) { 995 struct stat sb; 996 997 if (stat(argv[optind], &sb) != 0) { 998 usedialog = 0; 999 rv = install_zoneinfo(argv[optind]); 1000 exit(rv & ~DITEM_LEAVE_MENU); 1001 } 1002 /* FALLTHROUGH */ 1003 } 1004 1005 read_iso3166_table(); 1006 read_zones(); 1007 sort_countries(); 1008 make_menus(); 1009 1010 init_dialog(stdin, stdout); 1011 if (skiputc == 0) { 1012 DIALOG_VARS save_vars; 1013 int yesno; 1014 1015 snprintf(title, sizeof(title), 1016 "Select local or UTC (Greenwich Mean Time) clock"); 1017 snprintf(prompt, sizeof(prompt), 1018 "Is this machine's CMOS clock set to UTC? " 1019 "If it is set to local time,\n" 1020 "or you don't know, please choose NO here!"); 1021 dlg_save_vars(&save_vars); 1022 #if !defined(__sparc64__) 1023 dialog_vars.defaultno = TRUE; 1024 #endif 1025 yesno = dialog_yesno(title, prompt, 7, 73); 1026 dlg_restore_vars(&save_vars); 1027 if (!yesno) { 1028 if (reallydoit) 1029 unlink(path_wall_cmos_clock); 1030 } else { 1031 if (reallydoit) { 1032 fd = open(path_wall_cmos_clock, 1033 O_WRONLY | O_CREAT | O_TRUNC, 1034 S_IRUSR | S_IRGRP | S_IROTH); 1035 if (fd < 0) { 1036 end_dialog(); 1037 err(1, "create %s", 1038 path_wall_cmos_clock); 1039 } 1040 close(fd); 1041 } 1042 } 1043 dlg_clear(); 1044 } 1045 if (optind == argc - 1) { 1046 snprintf(title, sizeof(title), "Default timezone provided"); 1047 snprintf(prompt, sizeof(prompt), 1048 "\nUse the default `%s' zone?", argv[optind]); 1049 if (!dialog_yesno(title, prompt, 7, 72)) { 1050 rv = install_zoneinfo_file(argv[optind]); 1051 dlg_clear(); 1052 end_dialog(); 1053 exit(rv & ~DITEM_LEAVE_MENU); 1054 } 1055 dlg_clear(); 1056 } 1057 snprintf(title, sizeof(title), "Time Zone Selector"); 1058 snprintf(prompt, sizeof(prompt), "Select a region"); 1059 xdialog_menu(title, prompt, -1, -1, NCONTINENTS, NCONTINENTS, 1060 continents); 1061 1062 dlg_clear(); 1063 end_dialog(); 1064 return (0); 1065 } 1066