zic.c revision 1.19
1 /* $NetBSD: zic.c,v 1.19 2002/01/29 12:40:34 kleink Exp $ */ 2 3 #include <sys/cdefs.h> 4 #ifndef lint 5 #ifndef NOID 6 #if 0 7 static char elsieid[] = "@(#)zic.c 7.104"; 8 #else 9 __RCSID("$NetBSD: zic.c,v 1.19 2002/01/29 12:40:34 kleink Exp $"); 10 #endif 11 #endif /* !defined NOID */ 12 #endif /* !defined lint */ 13 14 #include "private.h" 15 #include "locale.h" 16 #include "tzfile.h" 17 18 #if HAVE_SYS_STAT_H 19 #include "sys/stat.h" 20 #endif 21 #ifdef S_IRUSR 22 #define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) 23 #else 24 #define MKDIR_UMASK 0755 25 #endif 26 27 #include "unistd.h" 28 29 /* 30 ** On some ancient hosts, predicates like `isspace(C)' are defined 31 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, 32 ** which says they are defined only if C == ((unsigned char) C) || C == EOF. 33 ** Neither the C Standard nor Posix require that `isascii' exist. 34 ** For portability, we check both ancient and modern requirements. 35 ** If isascii is not defined, the isascii check succeeds trivially. 36 */ 37 #include "ctype.h" 38 #ifndef isascii 39 #define isascii(x) 1 40 #endif 41 42 struct rule { 43 const char * r_filename; 44 int r_linenum; 45 const char * r_name; 46 47 int r_loyear; /* for example, 1986 */ 48 int r_hiyear; /* for example, 1986 */ 49 const char * r_yrtype; 50 51 int r_month; /* 0..11 */ 52 53 int r_dycode; /* see below */ 54 int r_dayofmonth; 55 int r_wday; 56 57 long r_tod; /* time from midnight */ 58 int r_todisstd; /* above is standard time if TRUE */ 59 /* or wall clock time if FALSE */ 60 int r_todisgmt; /* above is GMT if TRUE */ 61 /* or local time if FALSE */ 62 long r_stdoff; /* offset from standard time */ 63 const char * r_abbrvar; /* variable part of abbreviation */ 64 65 int r_todo; /* a rule to do (used in outzone) */ 66 time_t r_temp; /* used in outzone */ 67 }; 68 69 /* 70 ** r_dycode r_dayofmonth r_wday 71 */ 72 73 #define DC_DOM 0 /* 1..31 */ /* unused */ 74 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ 75 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ 76 77 struct zone { 78 const char * z_filename; 79 int z_linenum; 80 81 const char * z_name; 82 long z_gmtoff; 83 const char * z_rule; 84 const char * z_format; 85 86 long z_stdoff; 87 88 struct rule * z_rules; 89 int z_nrules; 90 91 struct rule z_untilrule; 92 time_t z_untiltime; 93 }; 94 95 extern int getopt P((int argc, char * const argv[], 96 const char * options)); 97 extern int link P((const char * fromname, const char * toname)); 98 extern char * optarg; 99 extern int optind; 100 101 static int atcomp P((const void *, const void *)); 102 static void addtt P((time_t starttime, int type)); 103 static int addtype P((long gmtoff, const char * abbr, int isdst, 104 int ttisstd, int ttisgmt)); 105 static void leapadd P((time_t t, int positive, int rolling, int count)); 106 static void adjleap P((void)); 107 static void associate P((void)); 108 static int ciequal P((const char * ap, const char * bp)); 109 static void convert P((long val, char * buf)); 110 static void dolink P((const char * fromfile, const char * tofile)); 111 static void doabbr P((char * abbr, int abbrlen, const char * format, 112 const char * letters, int isdst)); 113 static void eat P((const char * name, int num)); 114 static void eats P((const char * name, int num, 115 const char * rname, int rnum)); 116 static long eitol P((int i)); 117 static void error P((const char * message)); 118 static char ** getfields P((char * buf)); 119 static long gethms P((const char * string, const char * errstrng, 120 int signable)); 121 static void infile P((const char * filename)); 122 static void inleap P((char ** fields, int nfields)); 123 static void inlink P((char ** fields, int nfields)); 124 static void inrule P((char ** fields, int nfields)); 125 static int inzcont P((char ** fields, int nfields)); 126 static int inzone P((char ** fields, int nfields)); 127 static int inzsub P((char ** fields, int nfields, int iscont)); 128 static int itsabbr P((const char * abbr, const char * word)); 129 static int itsdir P((const char * name)); 130 static int lowerit P((int c)); 131 int main P((int, char **)); 132 static char * memcheck P((char * tocheck)); 133 static int mkdirs P((char * filename)); 134 static void newabbr P((const char * abbr)); 135 static long oadd P((long t1, long t2)); 136 static void outzone P((const struct zone * zp, int ntzones)); 137 static void puttzcode P((long code, FILE * fp)); 138 static int rcomp P((const void * leftp, const void * rightp)); 139 static time_t rpytime P((const struct rule * rp, int wantedy)); 140 static void rulesub P((struct rule * rp, 141 const char * loyearp, const char * hiyearp, 142 const char * typep, const char * monthp, 143 const char * dayp, const char * timep)); 144 static void setboundaries P((void)); 145 static time_t tadd P((time_t t1, long t2)); 146 static void usage P((void)); 147 static void warning P((const char * const)); 148 static void writezone P((const char * name)); 149 static int yearistype P((int year, const char * type)); 150 151 #if !(HAVE_STRERROR - 0) 152 static char * strerror P((int)); 153 #endif /* !(HAVE_STRERROR - 0) */ 154 155 static int charcnt; 156 static int errors; 157 static const char * filename; 158 static int leapcnt; 159 static int linenum; 160 static time_t max_time; 161 static int max_year; 162 static int max_year_representable; 163 static time_t min_time; 164 static int min_year; 165 static int min_year_representable; 166 static int noise; 167 static const char * rfilename; 168 static int rlinenum; 169 static const char * progname; 170 static int timecnt; 171 static int typecnt; 172 173 /* 174 ** Line codes. 175 */ 176 177 #define LC_RULE 0 178 #define LC_ZONE 1 179 #define LC_LINK 2 180 #define LC_LEAP 3 181 182 /* 183 ** Which fields are which on a Zone line. 184 */ 185 186 #define ZF_NAME 1 187 #define ZF_GMTOFF 2 188 #define ZF_RULE 3 189 #define ZF_FORMAT 4 190 #define ZF_TILYEAR 5 191 #define ZF_TILMONTH 6 192 #define ZF_TILDAY 7 193 #define ZF_TILTIME 8 194 #define ZONE_MINFIELDS 5 195 #define ZONE_MAXFIELDS 9 196 197 /* 198 ** Which fields are which on a Zone continuation line. 199 */ 200 201 #define ZFC_GMTOFF 0 202 #define ZFC_RULE 1 203 #define ZFC_FORMAT 2 204 #define ZFC_TILYEAR 3 205 #define ZFC_TILMONTH 4 206 #define ZFC_TILDAY 5 207 #define ZFC_TILTIME 6 208 #define ZONEC_MINFIELDS 3 209 #define ZONEC_MAXFIELDS 7 210 211 /* 212 ** Which files are which on a Rule line. 213 */ 214 215 #define RF_NAME 1 216 #define RF_LOYEAR 2 217 #define RF_HIYEAR 3 218 #define RF_COMMAND 4 219 #define RF_MONTH 5 220 #define RF_DAY 6 221 #define RF_TOD 7 222 #define RF_STDOFF 8 223 #define RF_ABBRVAR 9 224 #define RULE_FIELDS 10 225 226 /* 227 ** Which fields are which on a Link line. 228 */ 229 230 #define LF_FROM 1 231 #define LF_TO 2 232 #define LINK_FIELDS 3 233 234 /* 235 ** Which fields are which on a Leap line. 236 */ 237 238 #define LP_YEAR 1 239 #define LP_MONTH 2 240 #define LP_DAY 3 241 #define LP_TIME 4 242 #define LP_CORR 5 243 #define LP_ROLL 6 244 #define LEAP_FIELDS 7 245 246 /* 247 ** Year synonyms. 248 */ 249 250 #define YR_MINIMUM 0 251 #define YR_MAXIMUM 1 252 #define YR_ONLY 2 253 254 static struct rule * rules; 255 static int nrules; /* number of rules */ 256 257 static struct zone * zones; 258 static int nzones; /* number of zones */ 259 260 struct link { 261 const char * l_filename; 262 int l_linenum; 263 const char * l_from; 264 const char * l_to; 265 }; 266 267 static struct link * links; 268 static int nlinks; 269 270 struct lookup { 271 const char * l_word; 272 const int l_value; 273 }; 274 275 static struct lookup const * byword P((const char * string, 276 const struct lookup * lp)); 277 278 static struct lookup const line_codes[] = { 279 { "Rule", LC_RULE }, 280 { "Zone", LC_ZONE }, 281 { "Link", LC_LINK }, 282 { "Leap", LC_LEAP }, 283 { NULL, 0} 284 }; 285 286 static struct lookup const mon_names[] = { 287 { "January", TM_JANUARY }, 288 { "February", TM_FEBRUARY }, 289 { "March", TM_MARCH }, 290 { "April", TM_APRIL }, 291 { "May", TM_MAY }, 292 { "June", TM_JUNE }, 293 { "July", TM_JULY }, 294 { "August", TM_AUGUST }, 295 { "September", TM_SEPTEMBER }, 296 { "October", TM_OCTOBER }, 297 { "November", TM_NOVEMBER }, 298 { "December", TM_DECEMBER }, 299 { NULL, 0 } 300 }; 301 302 static struct lookup const wday_names[] = { 303 { "Sunday", TM_SUNDAY }, 304 { "Monday", TM_MONDAY }, 305 { "Tuesday", TM_TUESDAY }, 306 { "Wednesday", TM_WEDNESDAY }, 307 { "Thursday", TM_THURSDAY }, 308 { "Friday", TM_FRIDAY }, 309 { "Saturday", TM_SATURDAY }, 310 { NULL, 0 } 311 }; 312 313 static struct lookup const lasts[] = { 314 { "last-Sunday", TM_SUNDAY }, 315 { "last-Monday", TM_MONDAY }, 316 { "last-Tuesday", TM_TUESDAY }, 317 { "last-Wednesday", TM_WEDNESDAY }, 318 { "last-Thursday", TM_THURSDAY }, 319 { "last-Friday", TM_FRIDAY }, 320 { "last-Saturday", TM_SATURDAY }, 321 { NULL, 0 } 322 }; 323 324 static struct lookup const begin_years[] = { 325 { "minimum", YR_MINIMUM }, 326 { "maximum", YR_MAXIMUM }, 327 { NULL, 0 } 328 }; 329 330 static struct lookup const end_years[] = { 331 { "minimum", YR_MINIMUM }, 332 { "maximum", YR_MAXIMUM }, 333 { "only", YR_ONLY }, 334 { NULL, 0 } 335 }; 336 337 static struct lookup const leap_types[] = { 338 { "Rolling", TRUE }, 339 { "Stationary", FALSE }, 340 { NULL, 0 } 341 }; 342 343 static const int len_months[2][MONSPERYEAR] = { 344 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, 345 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } 346 }; 347 348 static const int len_years[2] = { 349 DAYSPERNYEAR, DAYSPERLYEAR 350 }; 351 352 static struct attype { 353 time_t at; 354 unsigned char type; 355 } attypes[TZ_MAX_TIMES]; 356 static long gmtoffs[TZ_MAX_TYPES]; 357 static char isdsts[TZ_MAX_TYPES]; 358 static unsigned char abbrinds[TZ_MAX_TYPES]; 359 static char ttisstds[TZ_MAX_TYPES]; 360 static char ttisgmts[TZ_MAX_TYPES]; 361 static char chars[TZ_MAX_CHARS]; 362 static time_t trans[TZ_MAX_LEAPS]; 363 static long corr[TZ_MAX_LEAPS]; 364 static char roll[TZ_MAX_LEAPS]; 365 366 /* 367 ** Memory allocation. 368 */ 369 370 static char * 371 memcheck(ptr) 372 char * const ptr; 373 { 374 if (ptr == NULL) { 375 const char *e = strerror(errno); 376 377 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"), 378 progname, e); 379 (void) exit(EXIT_FAILURE); 380 } 381 return ptr; 382 } 383 384 #define emalloc(size) memcheck(imalloc(size)) 385 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) 386 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) 387 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) 388 389 /* 390 ** Error handling. 391 */ 392 393 #if !(HAVE_STRERROR - 0) 394 static char * 395 strerror(errnum) 396 int errnum; 397 { 398 extern char * sys_errlist[]; 399 extern int sys_nerr; 400 401 return (errnum > 0 && errnum <= sys_nerr) ? 402 sys_errlist[errnum] : _("Unknown system error"); 403 } 404 #endif /* !(HAVE_STRERROR - 0) */ 405 406 static void 407 eats(name, num, rname, rnum) 408 const char * const name; 409 const int num; 410 const char * const rname; 411 const int rnum; 412 { 413 filename = name; 414 linenum = num; 415 rfilename = rname; 416 rlinenum = rnum; 417 } 418 419 static void 420 eat(name, num) 421 const char * const name; 422 const int num; 423 { 424 eats(name, num, (char *) NULL, -1); 425 } 426 427 static void 428 error(string) 429 const char * const string; 430 { 431 /* 432 ** Match the format of "cc" to allow sh users to 433 ** zic ... 2>&1 | error -t "*" -v 434 ** on BSD systems. 435 */ 436 (void) fprintf(stderr, _("\"%s\", line %d: %s"), 437 filename, linenum, string); 438 if (rfilename != NULL) 439 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), 440 rfilename, rlinenum); 441 (void) fprintf(stderr, "\n"); 442 ++errors; 443 } 444 445 static void 446 warning(string) 447 const char * const string; 448 { 449 char * cp; 450 451 cp = ecpyalloc(_("warning: ")); 452 cp = ecatalloc(cp, string); 453 error(cp); 454 ifree(cp); 455 --errors; 456 } 457 458 static void 459 usage P((void)) 460 { 461 (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), 462 progname, progname); 463 (void) exit(EXIT_FAILURE); 464 } 465 466 static const char * psxrules; 467 static const char * lcltime; 468 static const char * directory; 469 static const char * leapsec; 470 static const char * yitcommand; 471 static int sflag = FALSE; 472 473 int 474 main(argc, argv) 475 int argc; 476 char * argv[]; 477 { 478 register int i; 479 register int j; 480 register int c; 481 482 #ifdef _POSIX_VERSION 483 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); 484 #endif /* defined _POSIX_VERSION */ 485 #if HAVE_GETTEXT - 0 486 (void) setlocale(LC_MESSAGES, ""); 487 #ifdef TZ_DOMAINDIR 488 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); 489 #endif /* defined TEXTDOMAINDIR */ 490 (void) textdomain(TZ_DOMAIN); 491 #endif /* HAVE_GETTEXT - 0 */ 492 progname = argv[0]; 493 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) 494 switch (c) { 495 default: 496 usage(); 497 case 'd': 498 if (directory == NULL) 499 directory = optarg; 500 else { 501 (void) fprintf(stderr, 502 _("%s: More than one -d option specified\n"), 503 progname); 504 (void) exit(EXIT_FAILURE); 505 } 506 break; 507 case 'l': 508 if (lcltime == NULL) 509 lcltime = optarg; 510 else { 511 (void) fprintf(stderr, 512 _("%s: More than one -l option specified\n"), 513 progname); 514 (void) exit(EXIT_FAILURE); 515 } 516 break; 517 case 'p': 518 if (psxrules == NULL) 519 psxrules = optarg; 520 else { 521 (void) fprintf(stderr, 522 _("%s: More than one -p option specified\n"), 523 progname); 524 (void) exit(EXIT_FAILURE); 525 } 526 break; 527 case 'y': 528 if (yitcommand == NULL) 529 yitcommand = optarg; 530 else { 531 (void) fprintf(stderr, 532 _("%s: More than one -y option specified\n"), 533 progname); 534 (void) exit(EXIT_FAILURE); 535 } 536 break; 537 case 'L': 538 if (leapsec == NULL) 539 leapsec = optarg; 540 else { 541 (void) fprintf(stderr, 542 _("%s: More than one -L option specified\n"), 543 progname); 544 (void) exit(EXIT_FAILURE); 545 } 546 break; 547 case 'v': 548 noise = TRUE; 549 break; 550 case 's': 551 sflag = TRUE; 552 break; 553 } 554 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 555 usage(); /* usage message by request */ 556 if (directory == NULL) 557 directory = TZDIR; 558 if (yitcommand == NULL) 559 yitcommand = "yearistype"; 560 561 setboundaries(); 562 563 if (optind < argc && leapsec != NULL) { 564 infile(leapsec); 565 adjleap(); 566 } 567 568 for (i = optind; i < argc; ++i) 569 infile(argv[i]); 570 if (errors) 571 (void) exit(EXIT_FAILURE); 572 associate(); 573 for (i = 0; i < nzones; i = j) { 574 /* 575 ** Find the next non-continuation zone entry. 576 */ 577 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 578 continue; 579 outzone(&zones[i], j - i); 580 } 581 /* 582 ** Make links. 583 */ 584 for (i = 0; i < nlinks; ++i) { 585 eat(links[i].l_filename, links[i].l_linenum); 586 dolink(links[i].l_from, links[i].l_to); 587 } 588 if (lcltime != NULL) { 589 eat("command line", 1); 590 dolink(lcltime, TZDEFAULT); 591 } 592 if (psxrules != NULL) { 593 eat("command line", 1); 594 dolink(psxrules, TZDEFRULES); 595 } 596 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 597 } 598 599 static void 600 dolink(fromfile, tofile) 601 const char * const fromfile; 602 const char * const tofile; 603 { 604 register char * fromname; 605 register char * toname; 606 607 if (fromfile[0] == '/') 608 fromname = ecpyalloc(fromfile); 609 else { 610 fromname = ecpyalloc(directory); 611 fromname = ecatalloc(fromname, "/"); 612 fromname = ecatalloc(fromname, fromfile); 613 } 614 if (tofile[0] == '/') 615 toname = ecpyalloc(tofile); 616 else { 617 toname = ecpyalloc(directory); 618 toname = ecatalloc(toname, "/"); 619 toname = ecatalloc(toname, tofile); 620 } 621 /* 622 ** We get to be careful here since 623 ** there's a fair chance of root running us. 624 */ 625 if (!itsdir(toname)) 626 (void) remove(toname); 627 if (link(fromname, toname) != 0) { 628 int result; 629 630 if (mkdirs(toname) != 0) 631 (void) exit(EXIT_FAILURE); 632 633 result = link(fromname, toname); 634 #if (HAVE_SYMLINK - 0) 635 if (result != 0) { 636 const char *s = tofile; 637 register char * symlinkcontents = NULL; 638 while ((s = strchr(s+1, '/')) != NULL) 639 symlinkcontents = ecatalloc(symlinkcontents, "../"); 640 symlinkcontents = ecatalloc(symlinkcontents, fromfile); 641 642 result = symlink(symlinkcontents, toname); 643 if (result == 0) 644 warning(_("hard link failed, symbolic link used")); 645 ifree(symlinkcontents); 646 } 647 #endif 648 if (result != 0) { 649 const char *e = strerror(errno); 650 651 (void) fprintf(stderr, 652 _("%s: Can't link from %s to %s: %s\n"), 653 progname, fromname, toname, e); 654 (void) exit(EXIT_FAILURE); 655 } 656 } 657 ifree(fromname); 658 ifree(toname); 659 } 660 661 #ifndef INT_MAX 662 #define INT_MAX ((int) (((unsigned)~0)>>1)) 663 #endif /* !defined INT_MAX */ 664 665 #ifndef INT_MIN 666 #define INT_MIN ((int) ~(((unsigned)~0)>>1)) 667 #endif /* !defined INT_MIN */ 668 669 /* 670 ** The tz file format currently allows at most 32-bit quantities. 671 ** This restriction should be removed before signed 32-bit values 672 ** wrap around in 2038, but unfortunately this will require a 673 ** change to the tz file format. 674 */ 675 676 #define MAX_BITS_IN_FILE 32 677 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) 678 679 static void 680 setboundaries P((void)) 681 { 682 if (TYPE_SIGNED(time_t)) { 683 min_time = ~ (time_t) 0; 684 min_time <<= TIME_T_BITS_IN_FILE - 1; 685 max_time = ~ (time_t) 0 - min_time; 686 if (sflag) 687 min_time = 0; 688 } else { 689 min_time = 0; 690 max_time = 2 - sflag; 691 max_time <<= TIME_T_BITS_IN_FILE - 1; 692 --max_time; 693 } 694 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; 695 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; 696 min_year_representable = min_year; 697 max_year_representable = max_year; 698 } 699 700 static int 701 itsdir(name) 702 const char * const name; 703 { 704 register char * myname; 705 register int accres; 706 707 myname = ecpyalloc(name); 708 myname = ecatalloc(myname, "/."); 709 accres = access(myname, F_OK); 710 ifree(myname); 711 return accres == 0; 712 } 713 714 /* 715 ** Associate sets of rules with zones. 716 */ 717 718 /* 719 ** Sort by rule name. 720 */ 721 722 static int 723 rcomp(cp1, cp2) 724 const void * cp1; 725 const void * cp2; 726 { 727 return strcmp(((const struct rule *) cp1)->r_name, 728 ((const struct rule *) cp2)->r_name); 729 } 730 731 static void 732 associate P((void)) 733 { 734 register struct zone * zp; 735 register struct rule * rp; 736 register int base, out; 737 register int i, j; 738 739 if (nrules != 0) { 740 (void) qsort((void *) rules, (size_t) nrules, 741 (size_t) sizeof *rules, rcomp); 742 for (i = 0; i < nrules - 1; ++i) { 743 if (strcmp(rules[i].r_name, 744 rules[i + 1].r_name) != 0) 745 continue; 746 if (strcmp(rules[i].r_filename, 747 rules[i + 1].r_filename) == 0) 748 continue; 749 eat(rules[i].r_filename, rules[i].r_linenum); 750 warning(_("same rule name in multiple files")); 751 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); 752 warning(_("same rule name in multiple files")); 753 for (j = i + 2; j < nrules; ++j) { 754 if (strcmp(rules[i].r_name, 755 rules[j].r_name) != 0) 756 break; 757 if (strcmp(rules[i].r_filename, 758 rules[j].r_filename) == 0) 759 continue; 760 if (strcmp(rules[i + 1].r_filename, 761 rules[j].r_filename) == 0) 762 continue; 763 break; 764 } 765 i = j - 1; 766 } 767 } 768 for (i = 0; i < nzones; ++i) { 769 zp = &zones[i]; 770 zp->z_rules = NULL; 771 zp->z_nrules = 0; 772 } 773 for (base = 0; base < nrules; base = out) { 774 rp = &rules[base]; 775 for (out = base + 1; out < nrules; ++out) 776 if (strcmp(rp->r_name, rules[out].r_name) != 0) 777 break; 778 for (i = 0; i < nzones; ++i) { 779 zp = &zones[i]; 780 if (strcmp(zp->z_rule, rp->r_name) != 0) 781 continue; 782 zp->z_rules = rp; 783 zp->z_nrules = out - base; 784 } 785 } 786 for (i = 0; i < nzones; ++i) { 787 zp = &zones[i]; 788 if (zp->z_nrules == 0) { 789 /* 790 ** Maybe we have a local standard time offset. 791 */ 792 eat(zp->z_filename, zp->z_linenum); 793 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), 794 TRUE); 795 /* 796 ** Note, though, that if there's no rule, 797 ** a '%s' in the format is a bad thing. 798 */ 799 if (strchr(zp->z_format, '%') != 0) 800 error(_("%s in ruleless zone")); 801 } 802 } 803 if (errors) 804 (void) exit(EXIT_FAILURE); 805 } 806 807 static void 808 infile(name) 809 const char * name; 810 { 811 register FILE * fp; 812 register char ** fields; 813 register char * cp; 814 register const struct lookup * lp; 815 register int nfields; 816 register int wantcont; 817 register int num; 818 char buf[BUFSIZ]; 819 820 if (strcmp(name, "-") == 0) { 821 name = _("standard input"); 822 fp = stdin; 823 } else if ((fp = fopen(name, "r")) == NULL) { 824 const char *e = strerror(errno); 825 826 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), 827 progname, name, e); 828 (void) exit(EXIT_FAILURE); 829 } 830 wantcont = FALSE; 831 for (num = 1; ; ++num) { 832 eat(name, num); 833 if (fgets(buf, (int) sizeof buf, fp) != buf) 834 break; 835 cp = strchr(buf, '\n'); 836 if (cp == NULL) { 837 error(_("line too long")); 838 (void) exit(EXIT_FAILURE); 839 } 840 *cp = '\0'; 841 fields = getfields(buf); 842 nfields = 0; 843 while (fields[nfields] != NULL) { 844 static char nada; 845 846 if (strcmp(fields[nfields], "-") == 0) 847 fields[nfields] = &nada; 848 ++nfields; 849 } 850 if (nfields == 0) { 851 /* nothing to do */ 852 } else if (wantcont) { 853 wantcont = inzcont(fields, nfields); 854 } else { 855 lp = byword(fields[0], line_codes); 856 if (lp == NULL) 857 error(_("input line of unknown type")); 858 else switch ((int) (lp->l_value)) { 859 case LC_RULE: 860 inrule(fields, nfields); 861 wantcont = FALSE; 862 break; 863 case LC_ZONE: 864 wantcont = inzone(fields, nfields); 865 break; 866 case LC_LINK: 867 inlink(fields, nfields); 868 wantcont = FALSE; 869 break; 870 case LC_LEAP: 871 if (name != leapsec) 872 (void) fprintf(stderr, 873 _("%s: Leap line in non leap seconds file %s\n"), 874 progname, name); 875 else inleap(fields, nfields); 876 wantcont = FALSE; 877 break; 878 default: /* "cannot happen" */ 879 (void) fprintf(stderr, 880 _("%s: panic: Invalid l_value %d\n"), 881 progname, lp->l_value); 882 (void) exit(EXIT_FAILURE); 883 } 884 } 885 ifree((char *) fields); 886 } 887 if (ferror(fp)) { 888 (void) fprintf(stderr, _("%s: Error reading %s\n"), 889 progname, filename); 890 (void) exit(EXIT_FAILURE); 891 } 892 if (fp != stdin && fclose(fp)) { 893 const char *e = strerror(errno); 894 895 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), 896 progname, filename, e); 897 (void) exit(EXIT_FAILURE); 898 } 899 if (wantcont) 900 error(_("expected continuation line not found")); 901 } 902 903 /* 904 ** Convert a string of one of the forms 905 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss 906 ** into a number of seconds. 907 ** A null string maps to zero. 908 ** Call error with errstring and return zero on errors. 909 */ 910 911 static long 912 gethms(string, errstring, signable) 913 const char * string; 914 const char * const errstring; 915 const int signable; 916 { 917 int hh, mm, ss, sign; 918 919 if (string == NULL || *string == '\0') 920 return 0; 921 if (!signable) 922 sign = 1; 923 else if (*string == '-') { 924 sign = -1; 925 ++string; 926 } else sign = 1; 927 if (sscanf(string, scheck(string, "%d"), &hh) == 1) 928 mm = ss = 0; 929 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) 930 ss = 0; 931 else if (sscanf(string, scheck(string, "%d:%d:%d"), 932 &hh, &mm, &ss) != 3) { 933 error(errstring); 934 return 0; 935 } 936 if ((hh < 0 || hh >= HOURSPERDAY || 937 mm < 0 || mm >= MINSPERHOUR || 938 ss < 0 || ss > SECSPERMIN) && 939 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) { 940 error(errstring); 941 return 0; 942 } 943 return eitol(sign) * 944 (eitol(hh * MINSPERHOUR + mm) * 945 eitol(SECSPERMIN) + eitol(ss)); 946 } 947 948 static void 949 inrule(fields, nfields) 950 register char ** const fields; 951 const int nfields; 952 { 953 static struct rule r; 954 955 if (nfields != RULE_FIELDS) { 956 error(_("wrong number of fields on Rule line")); 957 return; 958 } 959 if (*fields[RF_NAME] == '\0') { 960 error(_("nameless rule")); 961 return; 962 } 963 r.r_filename = filename; 964 r.r_linenum = linenum; 965 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); 966 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], 967 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); 968 r.r_name = ecpyalloc(fields[RF_NAME]); 969 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); 970 rules = (struct rule *) (void *) erealloc((char *) rules, 971 (int) ((nrules + 1) * sizeof *rules)); 972 rules[nrules++] = r; 973 } 974 975 static int 976 inzone(fields, nfields) 977 register char ** const fields; 978 const int nfields; 979 { 980 register int i; 981 static char * buf; 982 983 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { 984 error(_("wrong number of fields on Zone line")); 985 return FALSE; 986 } 987 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { 988 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); 989 (void)sprintf(buf, /* XXX: sprintf is safe */ 990 _("\"Zone %s\" line and -l option are mutually exclusive"), 991 TZDEFAULT); 992 error(buf); 993 return FALSE; 994 } 995 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { 996 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); 997 (void)sprintf(buf, /* XXX: sprintf is safe */ 998 _("\"Zone %s\" line and -p option are mutually exclusive"), 999 TZDEFRULES); 1000 error(buf); 1001 return FALSE; 1002 } 1003 for (i = 0; i < nzones; ++i) 1004 if (zones[i].z_name != NULL && 1005 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { 1006 buf = erealloc(buf, (int) (132 + 1007 strlen(fields[ZF_NAME]) + 1008 strlen(zones[i].z_filename))); 1009 (void)sprintf(buf, /* XXX: sprintf is safe */ 1010 _("duplicate zone name %s (file \"%s\", line %d)"), 1011 fields[ZF_NAME], 1012 zones[i].z_filename, 1013 zones[i].z_linenum); 1014 error(buf); 1015 return FALSE; 1016 } 1017 return inzsub(fields, nfields, FALSE); 1018 } 1019 1020 static int 1021 inzcont(fields, nfields) 1022 register char ** const fields; 1023 const int nfields; 1024 { 1025 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { 1026 error(_("wrong number of fields on Zone continuation line")); 1027 return FALSE; 1028 } 1029 return inzsub(fields, nfields, TRUE); 1030 } 1031 1032 static int 1033 inzsub(fields, nfields, iscont) 1034 register char ** const fields; 1035 const int nfields; 1036 const int iscont; 1037 { 1038 register char * cp; 1039 static struct zone z; 1040 register int i_gmtoff, i_rule, i_format; 1041 register int i_untilyear, i_untilmonth; 1042 register int i_untilday, i_untiltime; 1043 register int hasuntil; 1044 1045 if (iscont) { 1046 i_gmtoff = ZFC_GMTOFF; 1047 i_rule = ZFC_RULE; 1048 i_format = ZFC_FORMAT; 1049 i_untilyear = ZFC_TILYEAR; 1050 i_untilmonth = ZFC_TILMONTH; 1051 i_untilday = ZFC_TILDAY; 1052 i_untiltime = ZFC_TILTIME; 1053 z.z_name = NULL; 1054 } else { 1055 i_gmtoff = ZF_GMTOFF; 1056 i_rule = ZF_RULE; 1057 i_format = ZF_FORMAT; 1058 i_untilyear = ZF_TILYEAR; 1059 i_untilmonth = ZF_TILMONTH; 1060 i_untilday = ZF_TILDAY; 1061 i_untiltime = ZF_TILTIME; 1062 z.z_name = ecpyalloc(fields[ZF_NAME]); 1063 } 1064 z.z_filename = filename; 1065 z.z_linenum = linenum; 1066 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE); 1067 if ((cp = strchr(fields[i_format], '%')) != 0) { 1068 if (*++cp != 's' || strchr(cp, '%') != 0) { 1069 error(_("invalid abbreviation format")); 1070 return FALSE; 1071 } 1072 } 1073 z.z_rule = ecpyalloc(fields[i_rule]); 1074 z.z_format = ecpyalloc(fields[i_format]); 1075 hasuntil = nfields > i_untilyear; 1076 if (hasuntil) { 1077 z.z_untilrule.r_filename = filename; 1078 z.z_untilrule.r_linenum = linenum; 1079 rulesub(&z.z_untilrule, 1080 fields[i_untilyear], 1081 "only", 1082 "", 1083 (nfields > i_untilmonth) ? 1084 fields[i_untilmonth] : "Jan", 1085 (nfields > i_untilday) ? fields[i_untilday] : "1", 1086 (nfields > i_untiltime) ? fields[i_untiltime] : "0"); 1087 z.z_untiltime = rpytime(&z.z_untilrule, 1088 z.z_untilrule.r_loyear); 1089 if (iscont && nzones > 0 && 1090 z.z_untiltime > min_time && 1091 z.z_untiltime < max_time && 1092 zones[nzones - 1].z_untiltime > min_time && 1093 zones[nzones - 1].z_untiltime < max_time && 1094 zones[nzones - 1].z_untiltime >= z.z_untiltime) { 1095 error(_("Zone continuation line end time is not after end time of previous line")); 1096 return FALSE; 1097 } 1098 } 1099 zones = (struct zone *) (void *) erealloc((char *) zones, 1100 (int) ((nzones + 1) * sizeof *zones)); 1101 zones[nzones++] = z; 1102 /* 1103 ** If there was an UNTIL field on this line, 1104 ** there's more information about the zone on the next line. 1105 */ 1106 return hasuntil; 1107 } 1108 1109 static void 1110 inleap(fields, nfields) 1111 register char ** const fields; 1112 const int nfields; 1113 { 1114 register const char * cp; 1115 register const struct lookup * lp; 1116 register int i, j; 1117 int year, month, day; 1118 long dayoff, tod; 1119 time_t t; 1120 1121 if (nfields != LEAP_FIELDS) { 1122 error(_("wrong number of fields on Leap line")); 1123 return; 1124 } 1125 dayoff = 0; 1126 cp = fields[LP_YEAR]; 1127 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { 1128 /* 1129 * Leapin' Lizards! 1130 */ 1131 error(_("invalid leaping year")); 1132 return; 1133 } 1134 j = EPOCH_YEAR; 1135 while (j != year) { 1136 if (year > j) { 1137 i = len_years[isleap(j)]; 1138 ++j; 1139 } else { 1140 --j; 1141 i = -len_years[isleap(j)]; 1142 } 1143 dayoff = oadd(dayoff, eitol(i)); 1144 } 1145 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { 1146 error(_("invalid month name")); 1147 return; 1148 } 1149 month = lp->l_value; 1150 j = TM_JANUARY; 1151 while (j != month) { 1152 i = len_months[isleap(year)][j]; 1153 dayoff = oadd(dayoff, eitol(i)); 1154 ++j; 1155 } 1156 cp = fields[LP_DAY]; 1157 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || 1158 day <= 0 || day > len_months[isleap(year)][month]) { 1159 error(_("invalid day of month")); 1160 return; 1161 } 1162 dayoff = oadd(dayoff, eitol(day - 1)); 1163 if (dayoff < 0 && !TYPE_SIGNED(time_t)) { 1164 error(_("time before zero")); 1165 return; 1166 } 1167 t = (time_t) dayoff * SECSPERDAY; 1168 /* 1169 ** Cheap overflow check. 1170 */ 1171 if (t / SECSPERDAY != dayoff) { 1172 error(_("time overflow")); 1173 return; 1174 } 1175 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1176 cp = fields[LP_CORR]; 1177 { 1178 register int positive; 1179 int count; 1180 1181 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1182 positive = FALSE; 1183 count = 1; 1184 } else if (strcmp(cp, "--") == 0) { 1185 positive = FALSE; 1186 count = 2; 1187 } else if (strcmp(cp, "+") == 0) { 1188 positive = TRUE; 1189 count = 1; 1190 } else if (strcmp(cp, "++") == 0) { 1191 positive = TRUE; 1192 count = 2; 1193 } else { 1194 error(_("illegal CORRECTION field on Leap line")); 1195 return; 1196 } 1197 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1198 error(_("illegal Rolling/Stationary field on Leap line")); 1199 return; 1200 } 1201 leapadd(tadd(t, tod), positive, lp->l_value, count); 1202 } 1203 } 1204 1205 static void 1206 inlink(fields, nfields) 1207 register char ** const fields; 1208 const int nfields; 1209 { 1210 struct link l; 1211 1212 if (nfields != LINK_FIELDS) { 1213 error(_("wrong number of fields on Link line")); 1214 return; 1215 } 1216 if (*fields[LF_FROM] == '\0') { 1217 error(_("blank FROM field on Link line")); 1218 return; 1219 } 1220 if (*fields[LF_TO] == '\0') { 1221 error(_("blank TO field on Link line")); 1222 return; 1223 } 1224 l.l_filename = filename; 1225 l.l_linenum = linenum; 1226 l.l_from = ecpyalloc(fields[LF_FROM]); 1227 l.l_to = ecpyalloc(fields[LF_TO]); 1228 links = (struct link *) (void *) erealloc((char *) links, 1229 (int) ((nlinks + 1) * sizeof *links)); 1230 links[nlinks++] = l; 1231 } 1232 1233 static void 1234 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1235 register struct rule * const rp; 1236 const char * const loyearp; 1237 const char * const hiyearp; 1238 const char * const typep; 1239 const char * const monthp; 1240 const char * const dayp; 1241 const char * const timep; 1242 { 1243 register const struct lookup * lp; 1244 register const char * cp; 1245 register char * dp; 1246 register char * ep; 1247 1248 if ((lp = byword(monthp, mon_names)) == NULL) { 1249 error(_("invalid month name")); 1250 return; 1251 } 1252 rp->r_month = lp->l_value; 1253 rp->r_todisstd = FALSE; 1254 rp->r_todisgmt = FALSE; 1255 dp = ecpyalloc(timep); 1256 if (*dp != '\0') { 1257 ep = dp + strlen(dp) - 1; 1258 switch (lowerit(*ep)) { 1259 case 's': /* Standard */ 1260 rp->r_todisstd = TRUE; 1261 rp->r_todisgmt = FALSE; 1262 *ep = '\0'; 1263 break; 1264 case 'w': /* Wall */ 1265 rp->r_todisstd = FALSE; 1266 rp->r_todisgmt = FALSE; 1267 *ep = '\0'; 1268 break; 1269 case 'g': /* Greenwich */ 1270 case 'u': /* Universal */ 1271 case 'z': /* Zulu */ 1272 rp->r_todisstd = TRUE; 1273 rp->r_todisgmt = TRUE; 1274 *ep = '\0'; 1275 break; 1276 } 1277 } 1278 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1279 ifree(dp); 1280 /* 1281 ** Year work. 1282 */ 1283 cp = loyearp; 1284 lp = byword(cp, begin_years); 1285 if (lp != NULL) switch ((int) lp->l_value) { 1286 case YR_MINIMUM: 1287 rp->r_loyear = INT_MIN; 1288 break; 1289 case YR_MAXIMUM: 1290 rp->r_loyear = INT_MAX; 1291 break; 1292 default: /* "cannot happen" */ 1293 (void) fprintf(stderr, 1294 _("%s: panic: Invalid l_value %d\n"), 1295 progname, lp->l_value); 1296 (void) exit(EXIT_FAILURE); 1297 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { 1298 error(_("invalid starting year")); 1299 return; 1300 } else if (noise) { 1301 if (rp->r_loyear < min_year_representable) 1302 warning(_("starting year too low to be represented")); 1303 else if (rp->r_loyear > max_year_representable) 1304 warning(_("starting year too high to be represented")); 1305 } 1306 cp = hiyearp; 1307 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1308 case YR_MINIMUM: 1309 rp->r_hiyear = INT_MIN; 1310 break; 1311 case YR_MAXIMUM: 1312 rp->r_hiyear = INT_MAX; 1313 break; 1314 case YR_ONLY: 1315 rp->r_hiyear = rp->r_loyear; 1316 break; 1317 default: /* "cannot happen" */ 1318 (void) fprintf(stderr, 1319 _("%s: panic: Invalid l_value %d\n"), 1320 progname, lp->l_value); 1321 (void) exit(EXIT_FAILURE); 1322 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1323 error(_("invalid ending year")); 1324 return; 1325 } else if (noise) { 1326 if (rp->r_loyear < min_year_representable) 1327 warning(_("starting year too low to be represented")); 1328 else if (rp->r_loyear > max_year_representable) 1329 warning(_("starting year too high to be represented")); 1330 } 1331 if (rp->r_loyear > rp->r_hiyear) { 1332 error(_("starting year greater than ending year")); 1333 return; 1334 } 1335 if (*typep == '\0') 1336 rp->r_yrtype = NULL; 1337 else { 1338 if (rp->r_loyear == rp->r_hiyear) { 1339 error(_("typed single year")); 1340 return; 1341 } 1342 rp->r_yrtype = ecpyalloc(typep); 1343 } 1344 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1345 min_year = rp->r_loyear; 1346 /* 1347 ** Day work. 1348 ** Accept things such as: 1349 ** 1 1350 ** last-Sunday 1351 ** Sun<=20 1352 ** Sun>=7 1353 */ 1354 dp = ecpyalloc(dayp); 1355 if ((lp = byword(dp, lasts)) != NULL) { 1356 rp->r_dycode = DC_DOWLEQ; 1357 rp->r_wday = lp->l_value; 1358 rp->r_dayofmonth = len_months[1][rp->r_month]; 1359 } else { 1360 if ((ep = strchr(dp, '<')) != 0) 1361 rp->r_dycode = DC_DOWLEQ; 1362 else if ((ep = strchr(dp, '>')) != 0) 1363 rp->r_dycode = DC_DOWGEQ; 1364 else { 1365 ep = dp; 1366 rp->r_dycode = DC_DOM; 1367 } 1368 if (rp->r_dycode != DC_DOM) { 1369 *ep++ = 0; 1370 if (*ep++ != '=') { 1371 error(_("invalid day of month")); 1372 ifree(dp); 1373 return; 1374 } 1375 if ((lp = byword(dp, wday_names)) == NULL) { 1376 error(_("invalid weekday name")); 1377 ifree(dp); 1378 return; 1379 } 1380 rp->r_wday = lp->l_value; 1381 } 1382 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1383 rp->r_dayofmonth <= 0 || 1384 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1385 error(_("invalid day of month")); 1386 ifree(dp); 1387 return; 1388 } 1389 } 1390 ifree(dp); 1391 } 1392 1393 static void 1394 convert(val, buf) 1395 const long val; 1396 char * const buf; 1397 { 1398 register int i; 1399 register long shift; 1400 1401 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1402 buf[i] = val >> shift; 1403 } 1404 1405 static void 1406 puttzcode(val, fp) 1407 const long val; 1408 FILE * const fp; 1409 { 1410 char buf[4]; 1411 1412 convert(val, buf); 1413 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1414 } 1415 1416 static int 1417 atcomp(avp, bvp) 1418 const void * avp; 1419 const void * bvp; 1420 { 1421 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) 1422 return -1; 1423 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) 1424 return 1; 1425 else return 0; 1426 } 1427 1428 static void 1429 writezone(name) 1430 const char * const name; 1431 { 1432 register FILE * fp; 1433 register int i, j; 1434 static char * fullname; 1435 static struct tzhead tzh; 1436 time_t ats[TZ_MAX_TIMES]; 1437 unsigned char types[TZ_MAX_TIMES]; 1438 1439 /* 1440 ** Sort. 1441 */ 1442 if (timecnt > 1) 1443 (void) qsort((void *) attypes, (size_t) timecnt, 1444 (size_t) sizeof *attypes, atcomp); 1445 /* 1446 ** Optimize. 1447 */ 1448 { 1449 int fromi; 1450 int toi; 1451 1452 toi = 0; 1453 fromi = 0; 1454 while (fromi < timecnt && attypes[fromi].at < min_time) 1455 ++fromi; 1456 if (isdsts[0] == 0) 1457 while (fromi < timecnt && attypes[fromi].type == 0) 1458 ++fromi; /* handled by default rule */ 1459 for ( ; fromi < timecnt; ++fromi) { 1460 if (toi != 0 1461 && ((attypes[fromi].at 1462 + gmtoffs[attypes[toi - 1].type]) 1463 <= (attypes[toi - 1].at 1464 + gmtoffs[toi == 1 ? 0 1465 : attypes[toi - 2].type]))) { 1466 attypes[toi - 1].type = attypes[fromi].type; 1467 continue; 1468 } 1469 if (toi == 0 || 1470 attypes[toi - 1].type != attypes[fromi].type) 1471 attypes[toi++] = attypes[fromi]; 1472 } 1473 timecnt = toi; 1474 } 1475 /* 1476 ** Transfer. 1477 */ 1478 for (i = 0; i < timecnt; ++i) { 1479 ats[i] = attypes[i].at; 1480 types[i] = attypes[i].type; 1481 } 1482 fullname = erealloc(fullname, 1483 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1484 (void) sprintf(fullname, "%s/%s", directory, name); /* XXX: sprintf is safe */ 1485 /* 1486 ** Remove old file, if any, to snap links. 1487 */ 1488 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { 1489 const char *e = strerror(errno); 1490 1491 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), 1492 progname, fullname, e); 1493 (void) exit(EXIT_FAILURE); 1494 } 1495 if ((fp = fopen(fullname, "wb")) == NULL) { 1496 if (mkdirs(fullname) != 0) 1497 (void) exit(EXIT_FAILURE); 1498 if ((fp = fopen(fullname, "wb")) == NULL) { 1499 const char *e = strerror(errno); 1500 1501 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), 1502 progname, fullname, e); 1503 (void) exit(EXIT_FAILURE); 1504 } 1505 } 1506 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1507 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1508 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1509 convert(eitol(timecnt), tzh.tzh_timecnt); 1510 convert(eitol(typecnt), tzh.tzh_typecnt); 1511 convert(eitol(charcnt), tzh.tzh_charcnt); 1512 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); 1513 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1514 DO(tzh_magic); 1515 DO(tzh_reserved); 1516 DO(tzh_ttisgmtcnt); 1517 DO(tzh_ttisstdcnt); 1518 DO(tzh_leapcnt); 1519 DO(tzh_timecnt); 1520 DO(tzh_typecnt); 1521 DO(tzh_charcnt); 1522 #undef DO 1523 for (i = 0; i < timecnt; ++i) { 1524 j = leapcnt; 1525 while (--j >= 0) 1526 if (ats[i] >= trans[j]) { 1527 ats[i] = tadd(ats[i], corr[j]); 1528 break; 1529 } 1530 puttzcode((long) ats[i], fp); 1531 } 1532 if (timecnt > 0) 1533 (void) fwrite((void *) types, (size_t) sizeof types[0], 1534 (size_t) timecnt, fp); 1535 for (i = 0; i < typecnt; ++i) { 1536 puttzcode((long) gmtoffs[i], fp); 1537 (void) putc(isdsts[i], fp); 1538 (void) putc(abbrinds[i], fp); 1539 } 1540 if (charcnt != 0) 1541 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1542 (size_t) charcnt, fp); 1543 for (i = 0; i < leapcnt; ++i) { 1544 if (roll[i]) { 1545 if (timecnt == 0 || trans[i] < ats[0]) { 1546 j = 0; 1547 while (isdsts[j]) 1548 if (++j >= typecnt) { 1549 j = 0; 1550 break; 1551 } 1552 } else { 1553 j = 1; 1554 while (j < timecnt && trans[i] >= ats[j]) 1555 ++j; 1556 j = types[j - 1]; 1557 } 1558 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1559 } else puttzcode((long) trans[i], fp); 1560 puttzcode((long) corr[i], fp); 1561 } 1562 for (i = 0; i < typecnt; ++i) 1563 (void) putc(ttisstds[i], fp); 1564 for (i = 0; i < typecnt; ++i) 1565 (void) putc(ttisgmts[i], fp); 1566 if (ferror(fp) || fclose(fp)) { 1567 (void) fprintf(stderr, _("%s: Error writing %s\n"), 1568 progname, fullname); 1569 (void) exit(EXIT_FAILURE); 1570 } 1571 } 1572 1573 static void 1574 doabbr(abbr, abbrlen, format, letters, isdst) 1575 char * const abbr; 1576 const int abbrlen; 1577 const char * const format; 1578 const char * const letters; 1579 const int isdst; 1580 { 1581 if (strchr(format, '/') == NULL) { 1582 if (letters == NULL) 1583 (void)strncpy(abbr, format, abbrlen - 1); 1584 else 1585 (void)snprintf(abbr, abbrlen, format, letters); 1586 } else if (isdst) 1587 (void)strncpy(abbr, strchr(format, '/') + 1, abbrlen - 1); 1588 else { 1589 (void)strncpy(abbr, format, abbrlen - 1); 1590 *strchr(abbr, '/') = '\0'; 1591 } 1592 } 1593 1594 static void 1595 outzone(zpfirst, zonecount) 1596 const struct zone * const zpfirst; 1597 const int zonecount; 1598 { 1599 register const struct zone * zp; 1600 register struct rule * rp; 1601 register int i, j; 1602 register int usestart, useuntil; 1603 register time_t starttime, untiltime; 1604 register long gmtoff; 1605 register long stdoff; 1606 register int year; 1607 register long startoff; 1608 register int startttisstd; 1609 register int startttisgmt; 1610 register int type; 1611 char startbuf[BUFSIZ]; 1612 1613 INITIALIZE(untiltime); 1614 INITIALIZE(starttime); 1615 /* 1616 ** Now. . .finally. . .generate some useful data! 1617 */ 1618 timecnt = 0; 1619 typecnt = 0; 1620 charcnt = 0; 1621 /* 1622 ** Thanks to Earl Chew (earl (at) dnd.icp.nec.com.au) 1623 ** for noting the need to unconditionally initialize startttisstd. 1624 */ 1625 startttisstd = FALSE; 1626 startttisgmt = FALSE; 1627 for (i = 0; i < zonecount; ++i) { 1628 /* 1629 ** A guess that may well be corrected later. 1630 */ 1631 stdoff = 0; 1632 zp = &zpfirst[i]; 1633 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1634 useuntil = i < (zonecount - 1); 1635 if (useuntil && zp->z_untiltime <= min_time) 1636 continue; 1637 gmtoff = zp->z_gmtoff; 1638 eat(zp->z_filename, zp->z_linenum); 1639 *startbuf = '\0'; 1640 startoff = zp->z_gmtoff; 1641 if (zp->z_nrules == 0) { 1642 stdoff = zp->z_stdoff; 1643 doabbr(startbuf, sizeof startbuf, zp->z_format, 1644 (char *) NULL, stdoff != 0); 1645 type = addtype(oadd(zp->z_gmtoff, stdoff), 1646 startbuf, stdoff != 0, startttisstd, 1647 startttisgmt); 1648 if (usestart) { 1649 addtt(starttime, type); 1650 usestart = FALSE; 1651 } else if (stdoff != 0) 1652 addtt(min_time, type); 1653 } else for (year = min_year; year <= max_year; ++year) { 1654 if (useuntil && year > zp->z_untilrule.r_hiyear) 1655 break; 1656 /* 1657 ** Mark which rules to do in the current year. 1658 ** For those to do, calculate rpytime(rp, year); 1659 */ 1660 for (j = 0; j < zp->z_nrules; ++j) { 1661 rp = &zp->z_rules[j]; 1662 eats(zp->z_filename, zp->z_linenum, 1663 rp->r_filename, rp->r_linenum); 1664 rp->r_todo = year >= rp->r_loyear && 1665 year <= rp->r_hiyear && 1666 yearistype(year, rp->r_yrtype); 1667 if (rp->r_todo) 1668 rp->r_temp = rpytime(rp, year); 1669 } 1670 for ( ; ; ) { 1671 register int k; 1672 register time_t jtime, ktime; 1673 register long offset; 1674 char buf[BUFSIZ]; 1675 1676 INITIALIZE(ktime); 1677 if (useuntil) { 1678 /* 1679 ** Turn untiltime into UTC 1680 ** assuming the current gmtoff and 1681 ** stdoff values. 1682 */ 1683 untiltime = zp->z_untiltime; 1684 if (!zp->z_untilrule.r_todisgmt) 1685 untiltime = tadd(untiltime, 1686 -gmtoff); 1687 if (!zp->z_untilrule.r_todisstd) 1688 untiltime = tadd(untiltime, 1689 -stdoff); 1690 } 1691 /* 1692 ** Find the rule (of those to do, if any) 1693 ** that takes effect earliest in the year. 1694 */ 1695 k = -1; 1696 for (j = 0; j < zp->z_nrules; ++j) { 1697 rp = &zp->z_rules[j]; 1698 if (!rp->r_todo) 1699 continue; 1700 eats(zp->z_filename, zp->z_linenum, 1701 rp->r_filename, rp->r_linenum); 1702 offset = rp->r_todisgmt ? 0 : gmtoff; 1703 if (!rp->r_todisstd) 1704 offset = oadd(offset, stdoff); 1705 jtime = rp->r_temp; 1706 if (jtime == min_time || 1707 jtime == max_time) 1708 continue; 1709 jtime = tadd(jtime, -offset); 1710 if (k < 0 || jtime < ktime) { 1711 k = j; 1712 ktime = jtime; 1713 } 1714 } 1715 if (k < 0) 1716 break; /* go on to next year */ 1717 rp = &zp->z_rules[k]; 1718 rp->r_todo = FALSE; 1719 if (useuntil && ktime >= untiltime) 1720 break; 1721 stdoff = rp->r_stdoff; 1722 if (usestart && ktime == starttime) 1723 usestart = FALSE; 1724 if (usestart) { 1725 if (ktime < starttime) { 1726 startoff = oadd(zp->z_gmtoff, 1727 stdoff); 1728 doabbr(startbuf,sizeof startbuf, 1729 zp->z_format, 1730 rp->r_abbrvar, 1731 rp->r_stdoff != 0); 1732 continue; 1733 } 1734 if (*startbuf == '\0' && 1735 startoff == oadd(zp->z_gmtoff, 1736 stdoff)) { 1737 doabbr(startbuf,sizeof startbuf, 1738 zp->z_format, 1739 rp->r_abbrvar, 1740 rp->r_stdoff != 0); 1741 } 1742 } 1743 eats(zp->z_filename, zp->z_linenum, 1744 rp->r_filename, rp->r_linenum); 1745 doabbr(buf, sizeof buf, zp->z_format, 1746 rp->r_abbrvar, rp->r_stdoff != 0); 1747 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1748 type = addtype(offset, buf, rp->r_stdoff != 0, 1749 rp->r_todisstd, rp->r_todisgmt); 1750 addtt(ktime, type); 1751 } 1752 } 1753 if (usestart) { 1754 if (*startbuf == '\0' && 1755 zp->z_format != NULL && 1756 strchr(zp->z_format, '%') == NULL && 1757 strchr(zp->z_format, '/') == NULL) 1758 (void)strncpy(startbuf, zp->z_format, 1759 sizeof(startbuf) - 1); 1760 eat(zp->z_filename, zp->z_linenum); 1761 if (*startbuf == '\0') 1762 error(_("can't determine time zone abbreviation to use just after until time")); 1763 else addtt(starttime, 1764 addtype(startoff, startbuf, 1765 startoff != zp->z_gmtoff, 1766 startttisstd, 1767 startttisgmt)); 1768 } 1769 /* 1770 ** Now we may get to set starttime for the next zone line. 1771 */ 1772 if (useuntil) { 1773 startttisstd = zp->z_untilrule.r_todisstd; 1774 startttisgmt = zp->z_untilrule.r_todisgmt; 1775 starttime = zp->z_untiltime; 1776 if (!startttisstd) 1777 starttime = tadd(starttime, -stdoff); 1778 if (!startttisgmt) 1779 starttime = tadd(starttime, -gmtoff); 1780 } 1781 } 1782 writezone(zpfirst->z_name); 1783 } 1784 1785 static void 1786 addtt(starttime, type) 1787 const time_t starttime; 1788 int type; 1789 { 1790 if (starttime <= min_time || 1791 (timecnt == 1 && attypes[0].at < min_time)) { 1792 gmtoffs[0] = gmtoffs[type]; 1793 isdsts[0] = isdsts[type]; 1794 ttisstds[0] = ttisstds[type]; 1795 ttisgmts[0] = ttisgmts[type]; 1796 if (abbrinds[type] != 0) 1797 (void) strcpy(chars, &chars[abbrinds[type]]); 1798 abbrinds[0] = 0; 1799 charcnt = strlen(chars) + 1; 1800 typecnt = 1; 1801 timecnt = 0; 1802 type = 0; 1803 } 1804 if (timecnt >= TZ_MAX_TIMES) { 1805 error(_("too many transitions?!")); 1806 (void) exit(EXIT_FAILURE); 1807 } 1808 attypes[timecnt].at = starttime; 1809 attypes[timecnt].type = type; 1810 ++timecnt; 1811 } 1812 1813 static int 1814 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1815 const long gmtoff; 1816 const char * const abbr; 1817 const int isdst; 1818 const int ttisstd; 1819 const int ttisgmt; 1820 { 1821 register int i, j; 1822 1823 if (isdst != TRUE && isdst != FALSE) { 1824 error(_("internal error - addtype called with bad isdst")); 1825 (void) exit(EXIT_FAILURE); 1826 } 1827 if (ttisstd != TRUE && ttisstd != FALSE) { 1828 error(_("internal error - addtype called with bad ttisstd")); 1829 (void) exit(EXIT_FAILURE); 1830 } 1831 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1832 error(_("internal error - addtype called with bad ttisgmt")); 1833 (void) exit(EXIT_FAILURE); 1834 } 1835 /* 1836 ** See if there's already an entry for this zone type. 1837 ** If so, just return its index. 1838 */ 1839 for (i = 0; i < typecnt; ++i) { 1840 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1841 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1842 ttisstd == ttisstds[i] && 1843 ttisgmt == ttisgmts[i]) 1844 return i; 1845 } 1846 /* 1847 ** There isn't one; add a new one, unless there are already too 1848 ** many. 1849 */ 1850 if (typecnt >= TZ_MAX_TYPES) { 1851 error(_("too many local time types")); 1852 (void) exit(EXIT_FAILURE); 1853 } 1854 gmtoffs[i] = gmtoff; 1855 isdsts[i] = isdst; 1856 ttisstds[i] = ttisstd; 1857 ttisgmts[i] = ttisgmt; 1858 1859 for (j = 0; j < charcnt; ++j) 1860 if (strcmp(&chars[j], abbr) == 0) 1861 break; 1862 if (j == charcnt) 1863 newabbr(abbr); 1864 abbrinds[i] = j; 1865 ++typecnt; 1866 return i; 1867 } 1868 1869 static void 1870 leapadd(t, positive, rolling, count) 1871 const time_t t; 1872 const int positive; 1873 const int rolling; 1874 int count; 1875 { 1876 register int i, j; 1877 1878 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1879 error(_("too many leap seconds")); 1880 (void) exit(EXIT_FAILURE); 1881 } 1882 for (i = 0; i < leapcnt; ++i) 1883 if (t <= trans[i]) { 1884 if (t == trans[i]) { 1885 error(_("repeated leap second moment")); 1886 (void) exit(EXIT_FAILURE); 1887 } 1888 break; 1889 } 1890 do { 1891 for (j = leapcnt; j > i; --j) { 1892 trans[j] = trans[j - 1]; 1893 corr[j] = corr[j - 1]; 1894 roll[j] = roll[j - 1]; 1895 } 1896 trans[i] = t; 1897 corr[i] = positive ? 1L : eitol(-count); 1898 roll[i] = rolling; 1899 ++leapcnt; 1900 } while (positive && --count != 0); 1901 } 1902 1903 static void 1904 adjleap P((void)) 1905 { 1906 register int i; 1907 register long last = 0; 1908 1909 /* 1910 ** propagate leap seconds forward 1911 */ 1912 for (i = 0; i < leapcnt; ++i) { 1913 trans[i] = tadd(trans[i], last); 1914 last = corr[i] += last; 1915 } 1916 } 1917 1918 static int 1919 yearistype(year, type) 1920 const int year; 1921 const char * const type; 1922 { 1923 static char * buf; 1924 int result; 1925 1926 if (type == NULL || *type == '\0') 1927 return TRUE; 1928 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1929 (void)sprintf(buf, "%s %d %s", yitcommand, year, type); /* XXX: sprintf is safe */ 1930 result = system(buf); 1931 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) { 1932 case 0: 1933 return TRUE; 1934 case 1: 1935 return FALSE; 1936 } 1937 error(_("Wild result from command execution")); 1938 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), 1939 progname, buf, result); 1940 for ( ; ; ) 1941 (void) exit(EXIT_FAILURE); 1942 } 1943 1944 static int 1945 lowerit(a) 1946 int a; 1947 { 1948 a = (unsigned char) a; 1949 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1950 } 1951 1952 static int 1953 ciequal(ap, bp) /* case-insensitive equality */ 1954 register const char * ap; 1955 register const char * bp; 1956 { 1957 while (lowerit(*ap) == lowerit(*bp++)) 1958 if (*ap++ == '\0') 1959 return TRUE; 1960 return FALSE; 1961 } 1962 1963 static int 1964 itsabbr(abbr, word) 1965 register const char * abbr; 1966 register const char * word; 1967 { 1968 if (lowerit(*abbr) != lowerit(*word)) 1969 return FALSE; 1970 ++word; 1971 while (*++abbr != '\0') 1972 do { 1973 if (*word == '\0') 1974 return FALSE; 1975 } while (lowerit(*word++) != lowerit(*abbr)); 1976 return TRUE; 1977 } 1978 1979 static const struct lookup * 1980 byword(word, table) 1981 register const char * const word; 1982 register const struct lookup * const table; 1983 { 1984 register const struct lookup * foundlp; 1985 register const struct lookup * lp; 1986 1987 if (word == NULL || table == NULL) 1988 return NULL; 1989 /* 1990 ** Look for exact match. 1991 */ 1992 for (lp = table; lp->l_word != NULL; ++lp) 1993 if (ciequal(word, lp->l_word)) 1994 return lp; 1995 /* 1996 ** Look for inexact match. 1997 */ 1998 foundlp = NULL; 1999 for (lp = table; lp->l_word != NULL; ++lp) 2000 if (itsabbr(word, lp->l_word)) { 2001 if (foundlp == NULL) 2002 foundlp = lp; 2003 else return NULL; /* multiple inexact matches */ 2004 } 2005 return foundlp; 2006 } 2007 2008 static char ** 2009 getfields(cp) 2010 register char * cp; 2011 { 2012 register char * dp; 2013 register char ** array; 2014 register int nsubs; 2015 2016 if (cp == NULL) 2017 return NULL; 2018 array = (char **) (void *) 2019 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 2020 nsubs = 0; 2021 for ( ; ; ) { 2022 while (isascii(*cp) && isspace((unsigned char) *cp)) 2023 ++cp; 2024 if (*cp == '\0' || *cp == '#') 2025 break; 2026 array[nsubs++] = dp = cp; 2027 do { 2028 if ((*dp = *cp++) != '"') 2029 ++dp; 2030 else while ((*dp = *cp++) != '"') 2031 if (*dp != '\0') 2032 ++dp; 2033 else error(_("Odd number of quotation marks")); 2034 } while (*cp != '\0' && *cp != '#' && 2035 (!isascii(*cp) || !isspace((unsigned char) *cp))); 2036 if (isascii(*cp) && isspace((unsigned char) *cp)) 2037 ++cp; 2038 *dp = '\0'; 2039 } 2040 array[nsubs] = NULL; 2041 return array; 2042 } 2043 2044 static long 2045 oadd(t1, t2) 2046 const long t1; 2047 const long t2; 2048 { 2049 register long t; 2050 2051 t = t1 + t2; 2052 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2053 error(_("time overflow")); 2054 (void) exit(EXIT_FAILURE); 2055 } 2056 return t; 2057 } 2058 2059 static time_t 2060 tadd(t1, t2) 2061 const time_t t1; 2062 const long t2; 2063 { 2064 register time_t t; 2065 2066 if (t1 == max_time && t2 > 0) 2067 return max_time; 2068 if (t1 == min_time && t2 < 0) 2069 return min_time; 2070 t = t1 + t2; 2071 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2072 error(_("time overflow")); 2073 (void) exit(EXIT_FAILURE); 2074 } 2075 return t; 2076 } 2077 2078 /* 2079 ** Given a rule, and a year, compute the date - in seconds since January 1, 2080 ** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2081 */ 2082 2083 static time_t 2084 rpytime(rp, wantedy) 2085 register const struct rule * const rp; 2086 register const int wantedy; 2087 { 2088 register int y, m, i; 2089 register long dayoff; /* with a nod to Margaret O. */ 2090 register time_t t; 2091 2092 if (wantedy == INT_MIN) 2093 return min_time; 2094 if (wantedy == INT_MAX) 2095 return max_time; 2096 dayoff = 0; 2097 m = TM_JANUARY; 2098 y = EPOCH_YEAR; 2099 while (wantedy != y) { 2100 if (wantedy > y) { 2101 i = len_years[isleap(y)]; 2102 ++y; 2103 } else { 2104 --y; 2105 i = -len_years[isleap(y)]; 2106 } 2107 dayoff = oadd(dayoff, eitol(i)); 2108 } 2109 while (m != rp->r_month) { 2110 i = len_months[isleap(y)][m]; 2111 dayoff = oadd(dayoff, eitol(i)); 2112 ++m; 2113 } 2114 i = rp->r_dayofmonth; 2115 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2116 if (rp->r_dycode == DC_DOWLEQ) 2117 --i; 2118 else { 2119 error(_("use of 2/29 in non leap-year")); 2120 (void) exit(EXIT_FAILURE); 2121 } 2122 } 2123 --i; 2124 dayoff = oadd(dayoff, eitol(i)); 2125 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2126 register long wday; 2127 2128 #define LDAYSPERWEEK ((long) DAYSPERWEEK) 2129 wday = eitol(EPOCH_WDAY); 2130 /* 2131 ** Don't trust mod of negative numbers. 2132 */ 2133 if (dayoff >= 0) 2134 wday = (wday + dayoff) % LDAYSPERWEEK; 2135 else { 2136 wday -= ((-dayoff) % LDAYSPERWEEK); 2137 if (wday < 0) 2138 wday += LDAYSPERWEEK; 2139 } 2140 while (wday != eitol(rp->r_wday)) 2141 if (rp->r_dycode == DC_DOWGEQ) { 2142 dayoff = oadd(dayoff, (long) 1); 2143 if (++wday >= LDAYSPERWEEK) 2144 wday = 0; 2145 ++i; 2146 } else { 2147 dayoff = oadd(dayoff, (long) -1); 2148 if (--wday < 0) 2149 wday = LDAYSPERWEEK - 1; 2150 --i; 2151 } 2152 if (i < 0 || i >= len_months[isleap(y)][m]) { 2153 error(_("no day in month matches rule")); 2154 (void) exit(EXIT_FAILURE); 2155 } 2156 } 2157 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2158 return min_time; 2159 t = (time_t) dayoff * SECSPERDAY; 2160 /* 2161 ** Cheap overflow check. 2162 */ 2163 if (t / SECSPERDAY != dayoff) 2164 return (dayoff > 0) ? max_time : min_time; 2165 return tadd(t, rp->r_tod); 2166 } 2167 2168 static void 2169 newabbr(string) 2170 const char * const string; 2171 { 2172 register int i; 2173 2174 i = strlen(string) + 1; 2175 if (charcnt + i > TZ_MAX_CHARS) { 2176 error(_("too many, or too long, time zone abbreviations")); 2177 (void) exit(EXIT_FAILURE); 2178 } 2179 (void)strncpy(&chars[charcnt], string, sizeof(chars) - charcnt - 1); 2180 charcnt += eitol(i); 2181 } 2182 2183 static int 2184 mkdirs(argname) 2185 char * const argname; 2186 { 2187 register char * name; 2188 register char * cp; 2189 2190 if (argname == NULL || *argname == '\0') 2191 return 0; 2192 cp = name = ecpyalloc(argname); 2193 while ((cp = strchr(cp + 1, '/')) != 0) { 2194 *cp = '\0'; 2195 #ifndef __NetBSD__ 2196 /* 2197 ** DOS drive specifier? 2198 */ 2199 if (isalpha((unsigned char) name[0]) && 2200 name[1] == ':' && name[2] == '\0') { 2201 *cp = '/'; 2202 continue; 2203 } 2204 #endif /* !defined __NetBSD__ */ 2205 if (!itsdir(name)) { 2206 /* 2207 ** It doesn't seem to exist, so we try to create it. 2208 ** Creation may fail because of the directory being 2209 ** created by some other multiprocessor, so we get 2210 ** to do extra checking. 2211 */ 2212 if (mkdir(name, MKDIR_UMASK) != 0) { 2213 const char *e = strerror(errno); 2214 2215 if (errno != EEXIST || !itsdir(name)) { 2216 (void) fprintf(stderr, 2217 _("%s: Can't create directory %s: %s\n"), 2218 progname, name, e); 2219 ifree(name); 2220 return -1; 2221 } 2222 } 2223 } 2224 *cp = '/'; 2225 } 2226 ifree(name); 2227 return 0; 2228 } 2229 2230 static long 2231 eitol(i) 2232 const int i; 2233 { 2234 long l; 2235 2236 l = i; 2237 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { 2238 (void) fprintf(stderr, 2239 _("%s: %d did not sign extend correctly\n"), 2240 progname, i); 2241 (void) exit(EXIT_FAILURE); 2242 } 2243 return l; 2244 } 2245 2246 /* 2247 ** UNIX was a registered trademark of UNIX System Laboratories in 1993. 2248 */ 2249
Indexes created Mon Sep 22 05:09:51 GMT 2025