zic.c revision 1.8
1 /* $NetBSD: zic.c,v 1.8 1997/06/21 21:26:23 cjs Exp $ */ 2 3 #ifndef lint 4 #ifndef NOID 5 static char elsieid[] = "@(#)zic.c 7.87"; 6 #endif /* !defined NOID */ 7 #endif /* !defined lint */ 8 9 #include "private.h" 10 #include "locale.h" 11 #include "tzfile.h" 12 #include "sys/stat.h" /* for umask manifest constants */ 13 14 /* 15 ** On some ancient hosts, predicates like `isspace(C)' are defined 16 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, 17 ** which says they are defined only if C == ((unsigned char) C) || C == EOF. 18 ** Neither the C Standard nor Posix require that `isascii' exist. 19 ** For portability, we check both ancient and modern requirements. 20 ** If isascii is not defined, the isascii check succeeds trivially. 21 */ 22 #include "ctype.h" 23 #ifndef isascii 24 #define isascii(x) 1 25 #endif 26 27 struct rule { 28 const char * r_filename; 29 int r_linenum; 30 const char * r_name; 31 32 int r_loyear; /* for example, 1986 */ 33 int r_hiyear; /* for example, 1986 */ 34 const char * r_yrtype; 35 36 int r_month; /* 0..11 */ 37 38 int r_dycode; /* see below */ 39 int r_dayofmonth; 40 int r_wday; 41 42 long r_tod; /* time from midnight */ 43 int r_todisstd; /* above is standard time if TRUE */ 44 /* or wall clock time if FALSE */ 45 int r_todisgmt; /* above is GMT if TRUE */ 46 /* or local time if FALSE */ 47 long r_stdoff; /* offset from standard time */ 48 const char * r_abbrvar; /* variable part of abbreviation */ 49 50 int r_todo; /* a rule to do (used in outzone) */ 51 time_t r_temp; /* used in outzone */ 52 }; 53 54 /* 55 ** r_dycode r_dayofmonth r_wday 56 */ 57 58 #define DC_DOM 0 /* 1..31 */ /* unused */ 59 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ 60 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ 61 62 struct zone { 63 const char * z_filename; 64 int z_linenum; 65 66 const char * z_name; 67 long z_gmtoff; 68 const char * z_rule; 69 const char * z_format; 70 71 long z_stdoff; 72 73 struct rule * z_rules; 74 int z_nrules; 75 76 struct rule z_untilrule; 77 time_t z_untiltime; 78 }; 79 80 extern int getopt P((int argc, char * const argv[], 81 const char * options)); 82 extern int link P((const char * fromname, const char * toname)); 83 extern char * optarg; 84 extern int optind; 85 86 static void addtt P((time_t starttime, int type)); 87 static int addtype P((long gmtoff, const char * abbr, int isdst, 88 int ttisstd, int ttisgmt)); 89 static void leapadd P((time_t t, int positive, int rolling, int count)); 90 static void adjleap P((void)); 91 static void associate P((void)); 92 static int ciequal P((const char * ap, const char * bp)); 93 static void convert P((long val, char * buf)); 94 static void dolink P((const char * fromfile, const char * tofile)); 95 static void doabbr P((char * abbr, int abbrlen, const char * format, 96 const char * letters, int isdst)); 97 static void eat P((const char * name, int num)); 98 static void eats P((const char * name, int num, 99 const char * rname, int rnum)); 100 static long eitol P((int i)); 101 static void error P((const char * message)); 102 static char ** getfields P((char * buf)); 103 static long gethms P((const char * string, const char * errstrng, 104 int signable)); 105 static void infile P((const char * filename)); 106 static void inleap P((char ** fields, int nfields)); 107 static void inlink P((char ** fields, int nfields)); 108 static void inrule P((char ** fields, int nfields)); 109 static int inzcont P((char ** fields, int nfields)); 110 static int inzone P((char ** fields, int nfields)); 111 static int inzsub P((char ** fields, int nfields, int iscont)); 112 static int itsabbr P((const char * abbr, const char * word)); 113 static int itsdir P((const char * name)); 114 static int lowerit P((int c)); 115 static char * memcheck P((char * tocheck)); 116 static int mkdirs P((char * filename)); 117 static void newabbr P((const char * abbr)); 118 static long oadd P((long t1, long t2)); 119 static void outzone P((const struct zone * zp, int ntzones)); 120 static void puttzcode P((long code, FILE * fp)); 121 static int rcomp P((const void * leftp, const void * rightp)); 122 static time_t rpytime P((const struct rule * rp, int wantedy)); 123 static void rulesub P((struct rule * rp, 124 const char * loyearp, const char * hiyearp, 125 const char * typep, const char * monthp, 126 const char * dayp, const char * timep)); 127 static void setboundaries P((void)); 128 static time_t tadd P((time_t t1, long t2)); 129 static void usage P((void)); 130 static void writezone P((const char * name)); 131 static int yearistype P((int year, const char * type)); 132 133 #if !(HAVE_STRERROR - 0) 134 static char * strerror P((int)); 135 #endif /* !(HAVE_STRERROR - 0) */ 136 137 static int charcnt; 138 static int errors; 139 static const char * filename; 140 static int leapcnt; 141 static int linenum; 142 static time_t max_time; 143 static int max_year; 144 static int max_year_representable; 145 static time_t min_time; 146 static int min_year; 147 static int min_year_representable; 148 static int noise; 149 static const char * rfilename; 150 static int rlinenum; 151 static const char * progname; 152 static int timecnt; 153 static int typecnt; 154 155 /* 156 ** Line codes. 157 */ 158 159 #define LC_RULE 0 160 #define LC_ZONE 1 161 #define LC_LINK 2 162 #define LC_LEAP 3 163 164 /* 165 ** Which fields are which on a Zone line. 166 */ 167 168 #define ZF_NAME 1 169 #define ZF_GMTOFF 2 170 #define ZF_RULE 3 171 #define ZF_FORMAT 4 172 #define ZF_TILYEAR 5 173 #define ZF_TILMONTH 6 174 #define ZF_TILDAY 7 175 #define ZF_TILTIME 8 176 #define ZONE_MINFIELDS 5 177 #define ZONE_MAXFIELDS 9 178 179 /* 180 ** Which fields are which on a Zone continuation line. 181 */ 182 183 #define ZFC_GMTOFF 0 184 #define ZFC_RULE 1 185 #define ZFC_FORMAT 2 186 #define ZFC_TILYEAR 3 187 #define ZFC_TILMONTH 4 188 #define ZFC_TILDAY 5 189 #define ZFC_TILTIME 6 190 #define ZONEC_MINFIELDS 3 191 #define ZONEC_MAXFIELDS 7 192 193 /* 194 ** Which files are which on a Rule line. 195 */ 196 197 #define RF_NAME 1 198 #define RF_LOYEAR 2 199 #define RF_HIYEAR 3 200 #define RF_COMMAND 4 201 #define RF_MONTH 5 202 #define RF_DAY 6 203 #define RF_TOD 7 204 #define RF_STDOFF 8 205 #define RF_ABBRVAR 9 206 #define RULE_FIELDS 10 207 208 /* 209 ** Which fields are which on a Link line. 210 */ 211 212 #define LF_FROM 1 213 #define LF_TO 2 214 #define LINK_FIELDS 3 215 216 /* 217 ** Which fields are which on a Leap line. 218 */ 219 220 #define LP_YEAR 1 221 #define LP_MONTH 2 222 #define LP_DAY 3 223 #define LP_TIME 4 224 #define LP_CORR 5 225 #define LP_ROLL 6 226 #define LEAP_FIELDS 7 227 228 /* 229 ** Year synonyms. 230 */ 231 232 #define YR_MINIMUM 0 233 #define YR_MAXIMUM 1 234 #define YR_ONLY 2 235 236 static struct rule * rules; 237 static int nrules; /* number of rules */ 238 239 static struct zone * zones; 240 static int nzones; /* number of zones */ 241 242 struct link { 243 const char * l_filename; 244 int l_linenum; 245 const char * l_from; 246 const char * l_to; 247 }; 248 249 static struct link * links; 250 static int nlinks; 251 252 struct lookup { 253 const char * l_word; 254 const int l_value; 255 }; 256 257 static struct lookup const * byword P((const char * string, 258 const struct lookup * lp)); 259 260 static struct lookup const line_codes[] = { 261 { "Rule", LC_RULE }, 262 { "Zone", LC_ZONE }, 263 { "Link", LC_LINK }, 264 { "Leap", LC_LEAP }, 265 { NULL, 0} 266 }; 267 268 static struct lookup const mon_names[] = { 269 { "January", TM_JANUARY }, 270 { "February", TM_FEBRUARY }, 271 { "March", TM_MARCH }, 272 { "April", TM_APRIL }, 273 { "May", TM_MAY }, 274 { "June", TM_JUNE }, 275 { "July", TM_JULY }, 276 { "August", TM_AUGUST }, 277 { "September", TM_SEPTEMBER }, 278 { "October", TM_OCTOBER }, 279 { "November", TM_NOVEMBER }, 280 { "December", TM_DECEMBER }, 281 { NULL, 0 } 282 }; 283 284 static struct lookup const wday_names[] = { 285 { "Sunday", TM_SUNDAY }, 286 { "Monday", TM_MONDAY }, 287 { "Tuesday", TM_TUESDAY }, 288 { "Wednesday", TM_WEDNESDAY }, 289 { "Thursday", TM_THURSDAY }, 290 { "Friday", TM_FRIDAY }, 291 { "Saturday", TM_SATURDAY }, 292 { NULL, 0 } 293 }; 294 295 static struct lookup const lasts[] = { 296 { "last-Sunday", TM_SUNDAY }, 297 { "last-Monday", TM_MONDAY }, 298 { "last-Tuesday", TM_TUESDAY }, 299 { "last-Wednesday", TM_WEDNESDAY }, 300 { "last-Thursday", TM_THURSDAY }, 301 { "last-Friday", TM_FRIDAY }, 302 { "last-Saturday", TM_SATURDAY }, 303 { NULL, 0 } 304 }; 305 306 static struct lookup const begin_years[] = { 307 { "minimum", YR_MINIMUM }, 308 { "maximum", YR_MAXIMUM }, 309 { NULL, 0 } 310 }; 311 312 static struct lookup const end_years[] = { 313 { "minimum", YR_MINIMUM }, 314 { "maximum", YR_MAXIMUM }, 315 { "only", YR_ONLY }, 316 { NULL, 0 } 317 }; 318 319 static struct lookup const leap_types[] = { 320 { "Rolling", TRUE }, 321 { "Stationary", FALSE }, 322 { NULL, 0 } 323 }; 324 325 static const int len_months[2][MONSPERYEAR] = { 326 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, 327 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } 328 }; 329 330 static const int len_years[2] = { 331 DAYSPERNYEAR, DAYSPERLYEAR 332 }; 333 334 static struct attype { 335 time_t at; 336 unsigned char type; 337 } attypes[TZ_MAX_TIMES]; 338 static long gmtoffs[TZ_MAX_TYPES]; 339 static char isdsts[TZ_MAX_TYPES]; 340 static unsigned char abbrinds[TZ_MAX_TYPES]; 341 static char ttisstds[TZ_MAX_TYPES]; 342 static char ttisgmts[TZ_MAX_TYPES]; 343 static char chars[TZ_MAX_CHARS]; 344 static time_t trans[TZ_MAX_LEAPS]; 345 static long corr[TZ_MAX_LEAPS]; 346 static char roll[TZ_MAX_LEAPS]; 347 348 /* 349 ** Memory allocation. 350 */ 351 352 static char * 353 memcheck(ptr) 354 char * const ptr; 355 { 356 if (ptr == NULL) { 357 const char *e = strerror(errno); 358 359 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"), 360 progname, e); 361 (void) exit(EXIT_FAILURE); 362 } 363 return ptr; 364 } 365 366 #define emalloc(size) memcheck(imalloc(size)) 367 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) 368 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) 369 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) 370 371 /* 372 ** Error handling. 373 */ 374 375 #if !(HAVE_STRERROR - 0) 376 static char * 377 strerror(errnum) 378 int errnum; 379 { 380 extern char * sys_errlist[]; 381 extern int sys_nerr; 382 383 return (errnum > 0 && errnum <= sys_nerr) ? 384 sys_errlist[errnum] : "Unknown system error"; 385 } 386 #endif /* !(HAVE_STRERROR - 0) */ 387 388 static void 389 eats(name, num, rname, rnum) 390 const char * const name; 391 const int num; 392 const char * const rname; 393 const int rnum; 394 { 395 filename = name; 396 linenum = num; 397 rfilename = rname; 398 rlinenum = rnum; 399 } 400 401 static void 402 eat(name, num) 403 const char * const name; 404 const int num; 405 { 406 eats(name, num, (char *) NULL, -1); 407 } 408 409 static void 410 error(string) 411 const char * const string; 412 { 413 /* 414 ** Match the format of "cc" to allow sh users to 415 ** zic ... 2>&1 | error -t "*" -v 416 ** on BSD systems. 417 */ 418 (void) fprintf(stderr, _("\"%s\", line %d: %s"), 419 filename, linenum, string); 420 if (rfilename != NULL) 421 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), 422 rfilename, rlinenum); 423 (void) fprintf(stderr, "\n"); 424 ++errors; 425 } 426 427 static void 428 warning(string) 429 const char * const string; 430 { 431 char * cp; 432 433 cp = ecpyalloc("warning: "); 434 cp = ecatalloc(cp, string); 435 error(cp); 436 ifree(cp); 437 --errors; 438 } 439 440 static void 441 usage P((void)) 442 { 443 (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), 444 progname, progname); 445 (void) exit(EXIT_FAILURE); 446 } 447 448 static const char * psxrules; 449 static const char * lcltime; 450 static const char * directory; 451 static const char * leapsec; 452 static const char * yitcommand; 453 static int sflag = FALSE; 454 455 int 456 main(argc, argv) 457 int argc; 458 char * argv[]; 459 { 460 register int i; 461 register int j; 462 register int c; 463 464 #ifdef unix 465 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); 466 #endif /* defined unix */ 467 #if HAVE_GETTEXT - 0 468 (void) setlocale(LC_MESSAGES, ""); 469 #ifdef TZ_DOMAINDIR 470 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); 471 #endif /* defined TEXTDOMAINDIR */ 472 (void) textdomain(TZ_DOMAIN); 473 #endif /* HAVE_GETTEXT - 0 */ 474 progname = argv[0]; 475 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) 476 switch (c) { 477 default: 478 usage(); 479 case 'd': 480 if (directory == NULL) 481 directory = optarg; 482 else { 483 (void) fprintf(stderr, 484 _("%s: More than one -d option specified\n"), 485 progname); 486 (void) exit(EXIT_FAILURE); 487 } 488 break; 489 case 'l': 490 if (lcltime == NULL) 491 lcltime = optarg; 492 else { 493 (void) fprintf(stderr, 494 _("%s: More than one -l option specified\n"), 495 progname); 496 (void) exit(EXIT_FAILURE); 497 } 498 break; 499 case 'p': 500 if (psxrules == NULL) 501 psxrules = optarg; 502 else { 503 (void) fprintf(stderr, 504 _("%s: More than one -p option specified\n"), 505 progname); 506 (void) exit(EXIT_FAILURE); 507 } 508 break; 509 case 'y': 510 if (yitcommand == NULL) 511 yitcommand = optarg; 512 else { 513 (void) fprintf(stderr, 514 _("%s: More than one -y option specified\n"), 515 progname); 516 (void) exit(EXIT_FAILURE); 517 } 518 break; 519 case 'L': 520 if (leapsec == NULL) 521 leapsec = optarg; 522 else { 523 (void) fprintf(stderr, 524 _("%s: More than one -L option specified\n"), 525 progname); 526 (void) exit(EXIT_FAILURE); 527 } 528 break; 529 case 'v': 530 noise = TRUE; 531 break; 532 case 's': 533 sflag = TRUE; 534 break; 535 } 536 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 537 usage(); /* usage message by request */ 538 if (directory == NULL) 539 directory = TZDIR; 540 if (yitcommand == NULL) 541 yitcommand = "yearistype"; 542 543 setboundaries(); 544 545 if (optind < argc && leapsec != NULL) { 546 infile(leapsec); 547 adjleap(); 548 } 549 550 for (i = optind; i < argc; ++i) 551 infile(argv[i]); 552 if (errors) 553 (void) exit(EXIT_FAILURE); 554 associate(); 555 for (i = 0; i < nzones; i = j) { 556 /* 557 ** Find the next non-continuation zone entry. 558 */ 559 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 560 continue; 561 outzone(&zones[i], j - i); 562 } 563 /* 564 ** Make links. 565 */ 566 for (i = 0; i < nlinks; ++i) 567 dolink(links[i].l_from, links[i].l_to); 568 if (lcltime != NULL) 569 dolink(lcltime, TZDEFAULT); 570 if (psxrules != NULL) 571 dolink(psxrules, TZDEFRULES); 572 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 573 } 574 575 static void 576 dolink(fromfile, tofile) 577 const char * const fromfile; 578 const char * const tofile; 579 { 580 register char * fromname; 581 register char * toname; 582 583 if (fromfile[0] == '/') 584 fromname = ecpyalloc(fromfile); 585 else { 586 fromname = ecpyalloc(directory); 587 fromname = ecatalloc(fromname, "/"); 588 fromname = ecatalloc(fromname, fromfile); 589 } 590 if (tofile[0] == '/') 591 toname = ecpyalloc(tofile); 592 else { 593 toname = ecpyalloc(directory); 594 toname = ecatalloc(toname, "/"); 595 toname = ecatalloc(toname, tofile); 596 } 597 /* 598 ** We get to be careful here since 599 ** there's a fair chance of root running us. 600 */ 601 if (!itsdir(toname)) 602 (void) remove(toname); 603 if (link(fromname, toname) != 0) { 604 if (mkdirs(toname) != 0) 605 (void) exit(EXIT_FAILURE); 606 if (link(fromname, toname) != 0) { 607 const char *e = strerror(errno); 608 609 (void) fprintf(stderr, 610 _("%s: Can't link from %s to %s: %s\n"), 611 progname, fromname, toname, e); 612 (void) exit(EXIT_FAILURE); 613 } 614 } 615 ifree(fromname); 616 ifree(toname); 617 } 618 619 #ifndef INT_MAX 620 #define INT_MAX ((int) (((unsigned)~0)>>1)) 621 #endif /* !defined INT_MAX */ 622 623 #ifndef INT_MIN 624 #define INT_MIN ((int) ~(((unsigned)~0)>>1)) 625 #endif /* !defined INT_MIN */ 626 627 /* 628 ** The tz file format currently allows at most 32-bit quantities. 629 ** This restriction should be removed before signed 32-bit values 630 ** wrap around in 2038, but unfortunately this will require a 631 ** change to the tz file format. 632 */ 633 634 #define MAX_BITS_IN_FILE 32 635 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) 636 637 static void 638 setboundaries P((void)) 639 { 640 if (TYPE_SIGNED(time_t)) { 641 min_time = ~ (time_t) 0; 642 min_time <<= TIME_T_BITS_IN_FILE - 1; 643 max_time = ~ (time_t) 0 - min_time; 644 if (sflag) 645 min_time = 0; 646 } else { 647 min_time = 0; 648 max_time = 2 - sflag; 649 max_time <<= TIME_T_BITS_IN_FILE - 1; 650 --max_time; 651 } 652 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; 653 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; 654 min_year_representable = min_year; 655 max_year_representable = max_year; 656 } 657 658 static int 659 itsdir(name) 660 const char * const name; 661 { 662 register char * myname; 663 register int accres; 664 665 myname = ecpyalloc(name); 666 myname = ecatalloc(myname, "/."); 667 accres = access(myname, F_OK); 668 ifree(myname); 669 return accres == 0; 670 } 671 672 /* 673 ** Associate sets of rules with zones. 674 */ 675 676 /* 677 ** Sort by rule name. 678 */ 679 680 static int 681 rcomp(cp1, cp2) 682 const void * cp1; 683 const void * cp2; 684 { 685 return strcmp(((const struct rule *) cp1)->r_name, 686 ((const struct rule *) cp2)->r_name); 687 } 688 689 static void 690 associate P((void)) 691 { 692 register struct zone * zp; 693 register struct rule * rp; 694 register int base, out; 695 register int i, j; 696 697 if (nrules != 0) { 698 (void) qsort((void *) rules, (size_t) nrules, 699 (size_t) sizeof *rules, rcomp); 700 for (i = 0; i < nrules - 1; ++i) { 701 if (strcmp(rules[i].r_name, 702 rules[i + 1].r_name) != 0) 703 continue; 704 if (strcmp(rules[i].r_filename, 705 rules[i + 1].r_filename) == 0) 706 continue; 707 eat(rules[i].r_filename, rules[i].r_linenum); 708 warning(_("same rule name in multiple files")); 709 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); 710 warning(_("same rule name in multiple files")); 711 for (j = i + 2; j < nrules; ++j) { 712 if (strcmp(rules[i].r_name, 713 rules[j].r_name) != 0) 714 break; 715 if (strcmp(rules[i].r_filename, 716 rules[j].r_filename) == 0) 717 continue; 718 if (strcmp(rules[i + 1].r_filename, 719 rules[j].r_filename) == 0) 720 continue; 721 break; 722 } 723 i = j - 1; 724 } 725 } 726 for (i = 0; i < nzones; ++i) { 727 zp = &zones[i]; 728 zp->z_rules = NULL; 729 zp->z_nrules = 0; 730 } 731 for (base = 0; base < nrules; base = out) { 732 rp = &rules[base]; 733 for (out = base + 1; out < nrules; ++out) 734 if (strcmp(rp->r_name, rules[out].r_name) != 0) 735 break; 736 for (i = 0; i < nzones; ++i) { 737 zp = &zones[i]; 738 if (strcmp(zp->z_rule, rp->r_name) != 0) 739 continue; 740 zp->z_rules = rp; 741 zp->z_nrules = out - base; 742 } 743 } 744 for (i = 0; i < nzones; ++i) { 745 zp = &zones[i]; 746 if (zp->z_nrules == 0) { 747 /* 748 ** Maybe we have a local standard time offset. 749 */ 750 eat(zp->z_filename, zp->z_linenum); 751 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), 752 TRUE); 753 /* 754 ** Note, though, that if there's no rule, 755 ** a '%s' in the format is a bad thing. 756 */ 757 if (strchr(zp->z_format, '%') != 0) 758 error(_("%s in ruleless zone")); 759 } 760 } 761 if (errors) 762 (void) exit(EXIT_FAILURE); 763 } 764 765 static void 766 infile(name) 767 const char * name; 768 { 769 register FILE * fp; 770 register char ** fields; 771 register char * cp; 772 register const struct lookup * lp; 773 register int nfields; 774 register int wantcont; 775 register int num; 776 char buf[BUFSIZ]; 777 778 if (strcmp(name, "-") == 0) { 779 name = _("standard input"); 780 fp = stdin; 781 } else if ((fp = fopen(name, "r")) == NULL) { 782 const char *e = strerror(errno); 783 784 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), 785 progname, name, e); 786 (void) exit(EXIT_FAILURE); 787 } 788 wantcont = FALSE; 789 for (num = 1; ; ++num) { 790 eat(name, num); 791 if (fgets(buf, (int) sizeof buf, fp) != buf) 792 break; 793 cp = strchr(buf, '\n'); 794 if (cp == NULL) { 795 error(_("line too long")); 796 (void) exit(EXIT_FAILURE); 797 } 798 *cp = '\0'; 799 fields = getfields(buf); 800 nfields = 0; 801 while (fields[nfields] != NULL) { 802 static char nada; 803 804 if (strcmp(fields[nfields], "-") == 0) 805 fields[nfields] = &nada; 806 ++nfields; 807 } 808 if (nfields == 0) { 809 /* nothing to do */ 810 } else if (wantcont) { 811 wantcont = inzcont(fields, nfields); 812 } else { 813 lp = byword(fields[0], line_codes); 814 if (lp == NULL) 815 error(_("input line of unknown type")); 816 else switch ((int) (lp->l_value)) { 817 case LC_RULE: 818 inrule(fields, nfields); 819 wantcont = FALSE; 820 break; 821 case LC_ZONE: 822 wantcont = inzone(fields, nfields); 823 break; 824 case LC_LINK: 825 inlink(fields, nfields); 826 wantcont = FALSE; 827 break; 828 case LC_LEAP: 829 if (name != leapsec) 830 (void) fprintf(stderr, 831 _("%s: Leap line in non leap seconds file %s\n"), 832 progname, name); 833 else inleap(fields, nfields); 834 wantcont = FALSE; 835 break; 836 default: /* "cannot happen" */ 837 (void) fprintf(stderr, 838 _("%s: panic: Invalid l_value %d\n"), 839 progname, lp->l_value); 840 (void) exit(EXIT_FAILURE); 841 } 842 } 843 ifree((char *) fields); 844 } 845 if (ferror(fp)) { 846 (void) fprintf(stderr, _("%s: Error reading %s\n"), 847 progname, filename); 848 (void) exit(EXIT_FAILURE); 849 } 850 if (fp != stdin && fclose(fp)) { 851 const char *e = strerror(errno); 852 853 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), 854 progname, filename, e); 855 (void) exit(EXIT_FAILURE); 856 } 857 if (wantcont) 858 error(_("expected continuation line not found")); 859 } 860 861 /* 862 ** Convert a string of one of the forms 863 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss 864 ** into a number of seconds. 865 ** A null string maps to zero. 866 ** Call error with errstring and return zero on errors. 867 */ 868 869 static long 870 gethms(string, errstring, signable) 871 const char * string; 872 const char * const errstring; 873 const int signable; 874 { 875 int hh, mm, ss, sign; 876 877 if (string == NULL || *string == '\0') 878 return 0; 879 if (!signable) 880 sign = 1; 881 else if (*string == '-') { 882 sign = -1; 883 ++string; 884 } else sign = 1; 885 if (sscanf(string, scheck(string, "%d"), &hh) == 1) 886 mm = ss = 0; 887 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) 888 ss = 0; 889 else if (sscanf(string, scheck(string, "%d:%d:%d"), 890 &hh, &mm, &ss) != 3) { 891 error(errstring); 892 return 0; 893 } 894 if (hh < 0 || hh >= HOURSPERDAY || 895 mm < 0 || mm >= MINSPERHOUR || 896 ss < 0 || ss > SECSPERMIN) { 897 error(errstring); 898 return 0; 899 } 900 return eitol(sign) * 901 (eitol(hh * MINSPERHOUR + mm) * 902 eitol(SECSPERMIN) + eitol(ss)); 903 } 904 905 static void 906 inrule(fields, nfields) 907 register char ** const fields; 908 const int nfields; 909 { 910 static struct rule r; 911 912 if (nfields != RULE_FIELDS) { 913 error(_("wrong number of fields on Rule line")); 914 return; 915 } 916 if (*fields[RF_NAME] == '\0') { 917 error(_("nameless rule")); 918 return; 919 } 920 r.r_filename = filename; 921 r.r_linenum = linenum; 922 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); 923 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], 924 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); 925 r.r_name = ecpyalloc(fields[RF_NAME]); 926 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); 927 rules = (struct rule *) (void *) erealloc((char *) rules, 928 (int) ((nrules + 1) * sizeof *rules)); 929 rules[nrules++] = r; 930 } 931 932 static int 933 inzone(fields, nfields) 934 register char ** const fields; 935 const int nfields; 936 { 937 register int i; 938 static char * buf; 939 940 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { 941 error(_("wrong number of fields on Zone line")); 942 return FALSE; 943 } 944 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { 945 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); 946 (void)sprintf(buf, /* XXX: sprintf is safe */ 947 _("\"Zone %s\" line and -l option are mutually exclusive"), 948 TZDEFAULT); 949 error(buf); 950 return FALSE; 951 } 952 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { 953 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); 954 (void)sprintf(buf, /* XXX: sprintf is safe */ 955 _("\"Zone %s\" line and -p option are mutually exclusive"), 956 TZDEFRULES); 957 error(buf); 958 return FALSE; 959 } 960 for (i = 0; i < nzones; ++i) 961 if (zones[i].z_name != NULL && 962 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { 963 buf = erealloc(buf, (int) (132 + 964 strlen(fields[ZF_NAME]) + 965 strlen(zones[i].z_filename))); 966 (void)sprintf(buf, /* XXX: sprintf is safe */ 967 _("duplicate zone name %s (file \"%s\", line %d)"), 968 fields[ZF_NAME], 969 zones[i].z_filename, 970 zones[i].z_linenum); 971 error(buf); 972 return FALSE; 973 } 974 return inzsub(fields, nfields, FALSE); 975 } 976 977 static int 978 inzcont(fields, nfields) 979 register char ** const fields; 980 const int nfields; 981 { 982 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { 983 error(_("wrong number of fields on Zone continuation line")); 984 return FALSE; 985 } 986 return inzsub(fields, nfields, TRUE); 987 } 988 989 static int 990 inzsub(fields, nfields, iscont) 991 register char ** const fields; 992 const int nfields; 993 const int iscont; 994 { 995 register char * cp; 996 static struct zone z; 997 register int i_gmtoff, i_rule, i_format; 998 register int i_untilyear, i_untilmonth; 999 register int i_untilday, i_untiltime; 1000 register int hasuntil; 1001 1002 if (iscont) { 1003 i_gmtoff = ZFC_GMTOFF; 1004 i_rule = ZFC_RULE; 1005 i_format = ZFC_FORMAT; 1006 i_untilyear = ZFC_TILYEAR; 1007 i_untilmonth = ZFC_TILMONTH; 1008 i_untilday = ZFC_TILDAY; 1009 i_untiltime = ZFC_TILTIME; 1010 z.z_name = NULL; 1011 } else { 1012 i_gmtoff = ZF_GMTOFF; 1013 i_rule = ZF_RULE; 1014 i_format = ZF_FORMAT; 1015 i_untilyear = ZF_TILYEAR; 1016 i_untilmonth = ZF_TILMONTH; 1017 i_untilday = ZF_TILDAY; 1018 i_untiltime = ZF_TILTIME; 1019 z.z_name = ecpyalloc(fields[ZF_NAME]); 1020 } 1021 z.z_filename = filename; 1022 z.z_linenum = linenum; 1023 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid GMT offset"), TRUE); 1024 if ((cp = strchr(fields[i_format], '%')) != 0) { 1025 if (*++cp != 's' || strchr(cp, '%') != 0) { 1026 error(_("invalid abbreviation format")); 1027 return FALSE; 1028 } 1029 } 1030 z.z_rule = ecpyalloc(fields[i_rule]); 1031 z.z_format = ecpyalloc(fields[i_format]); 1032 hasuntil = nfields > i_untilyear; 1033 if (hasuntil) { 1034 z.z_untilrule.r_filename = filename; 1035 z.z_untilrule.r_linenum = linenum; 1036 rulesub(&z.z_untilrule, 1037 fields[i_untilyear], 1038 "only", 1039 "", 1040 (nfields > i_untilmonth) ? 1041 fields[i_untilmonth] : "Jan", 1042 (nfields > i_untilday) ? fields[i_untilday] : "1", 1043 (nfields > i_untiltime) ? fields[i_untiltime] : "0"); 1044 z.z_untiltime = rpytime(&z.z_untilrule, 1045 z.z_untilrule.r_loyear); 1046 if (iscont && nzones > 0 && 1047 z.z_untiltime > min_time && 1048 z.z_untiltime < max_time && 1049 zones[nzones - 1].z_untiltime > min_time && 1050 zones[nzones - 1].z_untiltime < max_time && 1051 zones[nzones - 1].z_untiltime >= z.z_untiltime) { 1052 error(_("Zone continuation line end time is not after end time of previous line")); 1053 return FALSE; 1054 } 1055 } 1056 zones = (struct zone *) (void *) erealloc((char *) zones, 1057 (int) ((nzones + 1) * sizeof *zones)); 1058 zones[nzones++] = z; 1059 /* 1060 ** If there was an UNTIL field on this line, 1061 ** there's more information about the zone on the next line. 1062 */ 1063 return hasuntil; 1064 } 1065 1066 static void 1067 inleap(fields, nfields) 1068 register char ** const fields; 1069 const int nfields; 1070 { 1071 register const char * cp; 1072 register const struct lookup * lp; 1073 register int i, j; 1074 int year, month, day; 1075 long dayoff, tod; 1076 time_t t; 1077 1078 if (nfields != LEAP_FIELDS) { 1079 error(_("wrong number of fields on Leap line")); 1080 return; 1081 } 1082 dayoff = 0; 1083 cp = fields[LP_YEAR]; 1084 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { 1085 /* 1086 * Leapin' Lizards! 1087 */ 1088 error(_("invalid leaping year")); 1089 return; 1090 } 1091 j = EPOCH_YEAR; 1092 while (j != year) { 1093 if (year > j) { 1094 i = len_years[isleap(j)]; 1095 ++j; 1096 } else { 1097 --j; 1098 i = -len_years[isleap(j)]; 1099 } 1100 dayoff = oadd(dayoff, eitol(i)); 1101 } 1102 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { 1103 error(_("invalid month name")); 1104 return; 1105 } 1106 month = lp->l_value; 1107 j = TM_JANUARY; 1108 while (j != month) { 1109 i = len_months[isleap(year)][j]; 1110 dayoff = oadd(dayoff, eitol(i)); 1111 ++j; 1112 } 1113 cp = fields[LP_DAY]; 1114 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || 1115 day <= 0 || day > len_months[isleap(year)][month]) { 1116 error(_("invalid day of month")); 1117 return; 1118 } 1119 dayoff = oadd(dayoff, eitol(day - 1)); 1120 if (dayoff < 0 && !TYPE_SIGNED(time_t)) { 1121 error(_("time before zero")); 1122 return; 1123 } 1124 t = (time_t) dayoff * SECSPERDAY; 1125 /* 1126 ** Cheap overflow check. 1127 */ 1128 if (t / SECSPERDAY != dayoff) { 1129 error(_("time overflow")); 1130 return; 1131 } 1132 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1133 cp = fields[LP_CORR]; 1134 { 1135 register int positive; 1136 int count; 1137 1138 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1139 positive = FALSE; 1140 count = 1; 1141 } else if (strcmp(cp, "--") == 0) { 1142 positive = FALSE; 1143 count = 2; 1144 } else if (strcmp(cp, "+") == 0) { 1145 positive = TRUE; 1146 count = 1; 1147 } else if (strcmp(cp, "++") == 0) { 1148 positive = TRUE; 1149 count = 2; 1150 } else { 1151 error(_("illegal CORRECTION field on Leap line")); 1152 return; 1153 } 1154 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1155 error(_("illegal Rolling/Stationary field on Leap line")); 1156 return; 1157 } 1158 leapadd(tadd(t, tod), positive, lp->l_value, count); 1159 } 1160 } 1161 1162 static void 1163 inlink(fields, nfields) 1164 register char ** const fields; 1165 const int nfields; 1166 { 1167 struct link l; 1168 1169 if (nfields != LINK_FIELDS) { 1170 error(_("wrong number of fields on Link line")); 1171 return; 1172 } 1173 if (*fields[LF_FROM] == '\0') { 1174 error(_("blank FROM field on Link line")); 1175 return; 1176 } 1177 if (*fields[LF_TO] == '\0') { 1178 error(_("blank TO field on Link line")); 1179 return; 1180 } 1181 l.l_filename = filename; 1182 l.l_linenum = linenum; 1183 l.l_from = ecpyalloc(fields[LF_FROM]); 1184 l.l_to = ecpyalloc(fields[LF_TO]); 1185 links = (struct link *) (void *) erealloc((char *) links, 1186 (int) ((nlinks + 1) * sizeof *links)); 1187 links[nlinks++] = l; 1188 } 1189 1190 static void 1191 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1192 register struct rule * const rp; 1193 const char * const loyearp; 1194 const char * const hiyearp; 1195 const char * const typep; 1196 const char * const monthp; 1197 const char * const dayp; 1198 const char * const timep; 1199 { 1200 register const struct lookup * lp; 1201 register const char * cp; 1202 register char * dp; 1203 register char * ep; 1204 1205 if ((lp = byword(monthp, mon_names)) == NULL) { 1206 error(_("invalid month name")); 1207 return; 1208 } 1209 rp->r_month = lp->l_value; 1210 rp->r_todisstd = FALSE; 1211 rp->r_todisgmt = FALSE; 1212 dp = ecpyalloc(timep); 1213 if (*dp != '\0') { 1214 ep = dp + strlen(dp) - 1; 1215 switch (lowerit(*ep)) { 1216 case 's': /* Standard */ 1217 rp->r_todisstd = TRUE; 1218 rp->r_todisgmt = FALSE; 1219 *ep = '\0'; 1220 break; 1221 case 'w': /* Wall */ 1222 rp->r_todisstd = FALSE; 1223 rp->r_todisgmt = FALSE; 1224 *ep = '\0'; 1225 break; 1226 case 'g': /* Greenwich */ 1227 case 'u': /* Universal */ 1228 case 'z': /* Zulu */ 1229 rp->r_todisstd = TRUE; 1230 rp->r_todisgmt = TRUE; 1231 *ep = '\0'; 1232 break; 1233 } 1234 } 1235 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1236 ifree(dp); 1237 /* 1238 ** Year work. 1239 */ 1240 cp = loyearp; 1241 lp = byword(cp, begin_years); 1242 if (lp != NULL) switch ((int) lp->l_value) { 1243 case YR_MINIMUM: 1244 rp->r_loyear = INT_MIN; 1245 break; 1246 case YR_MAXIMUM: 1247 rp->r_loyear = INT_MAX; 1248 break; 1249 default: /* "cannot happen" */ 1250 (void) fprintf(stderr, 1251 _("%s: panic: Invalid l_value %d\n"), 1252 progname, lp->l_value); 1253 (void) exit(EXIT_FAILURE); 1254 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { 1255 error(_("invalid starting year")); 1256 return; 1257 } else if (noise) 1258 if (rp->r_loyear < min_year_representable) 1259 warning(_("starting year too low to be represented")); 1260 else if (rp->r_loyear > max_year_representable) 1261 warning(_("starting year too high to be represented")); 1262 cp = hiyearp; 1263 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1264 case YR_MINIMUM: 1265 rp->r_hiyear = INT_MIN; 1266 break; 1267 case YR_MAXIMUM: 1268 rp->r_hiyear = INT_MAX; 1269 break; 1270 case YR_ONLY: 1271 rp->r_hiyear = rp->r_loyear; 1272 break; 1273 default: /* "cannot happen" */ 1274 (void) fprintf(stderr, 1275 _("%s: panic: Invalid l_value %d\n"), 1276 progname, lp->l_value); 1277 (void) exit(EXIT_FAILURE); 1278 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1279 error(_("invalid ending year")); 1280 return; 1281 } else if (noise) 1282 if (rp->r_loyear < min_year_representable) 1283 warning(_("starting year too low to be represented")); 1284 else if (rp->r_loyear > max_year_representable) 1285 warning(_("starting year too high to be represented")); 1286 if (rp->r_loyear > rp->r_hiyear) { 1287 error(_("starting year greater than ending year")); 1288 return; 1289 } 1290 if (*typep == '\0') 1291 rp->r_yrtype = NULL; 1292 else { 1293 if (rp->r_loyear == rp->r_hiyear) { 1294 error(_("typed single year")); 1295 return; 1296 } 1297 rp->r_yrtype = ecpyalloc(typep); 1298 } 1299 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1300 min_year = rp->r_loyear; 1301 /* 1302 ** Day work. 1303 ** Accept things such as: 1304 ** 1 1305 ** last-Sunday 1306 ** Sun<=20 1307 ** Sun>=7 1308 */ 1309 dp = ecpyalloc(dayp); 1310 if ((lp = byword(dp, lasts)) != NULL) { 1311 rp->r_dycode = DC_DOWLEQ; 1312 rp->r_wday = lp->l_value; 1313 rp->r_dayofmonth = len_months[1][rp->r_month]; 1314 } else { 1315 if ((ep = strchr(dp, '<')) != 0) 1316 rp->r_dycode = DC_DOWLEQ; 1317 else if ((ep = strchr(dp, '>')) != 0) 1318 rp->r_dycode = DC_DOWGEQ; 1319 else { 1320 ep = dp; 1321 rp->r_dycode = DC_DOM; 1322 } 1323 if (rp->r_dycode != DC_DOM) { 1324 *ep++ = 0; 1325 if (*ep++ != '=') { 1326 error(_("invalid day of month")); 1327 ifree(dp); 1328 return; 1329 } 1330 if ((lp = byword(dp, wday_names)) == NULL) { 1331 error(_("invalid weekday name")); 1332 ifree(dp); 1333 return; 1334 } 1335 rp->r_wday = lp->l_value; 1336 } 1337 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1338 rp->r_dayofmonth <= 0 || 1339 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1340 error(_("invalid day of month")); 1341 ifree(dp); 1342 return; 1343 } 1344 } 1345 ifree(dp); 1346 } 1347 1348 static void 1349 convert(val, buf) 1350 const long val; 1351 char * const buf; 1352 { 1353 register int i; 1354 register long shift; 1355 1356 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1357 buf[i] = val >> shift; 1358 } 1359 1360 static void 1361 puttzcode(val, fp) 1362 const long val; 1363 FILE * const fp; 1364 { 1365 char buf[4]; 1366 1367 convert(val, buf); 1368 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1369 } 1370 1371 static int 1372 atcomp(avp, bvp) 1373 void * avp; 1374 void * bvp; 1375 { 1376 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) 1377 return -1; 1378 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) 1379 return 1; 1380 else return 0; 1381 } 1382 1383 static void 1384 writezone(name) 1385 const char * const name; 1386 { 1387 register FILE * fp; 1388 register int i, j; 1389 static char * fullname; 1390 static struct tzhead tzh; 1391 time_t ats[TZ_MAX_TIMES]; 1392 unsigned char types[TZ_MAX_TIMES]; 1393 1394 /* 1395 ** Sort. 1396 */ 1397 if (timecnt > 1) 1398 (void) qsort((void *) attypes, (size_t) timecnt, 1399 (size_t) sizeof *attypes, atcomp); 1400 /* 1401 ** Optimize. 1402 */ 1403 { 1404 int fromi; 1405 int toi; 1406 1407 toi = 0; 1408 fromi = 0; 1409 while (fromi < timecnt && attypes[fromi].at < min_time) 1410 ++fromi; 1411 if (isdsts[0] == 0) 1412 while (fromi < timecnt && attypes[fromi].type == 0) 1413 ++fromi; /* handled by default rule */ 1414 for ( ; fromi < timecnt; ++fromi) { 1415 if (toi != 0 1416 && ((attypes[fromi].at 1417 + gmtoffs[attypes[toi - 1].type]) 1418 <= (attypes[toi - 1].at 1419 + gmtoffs[toi == 1 ? 0 1420 : attypes[toi - 2].type]))) { 1421 attypes[toi - 1].type = attypes[fromi].type; 1422 continue; 1423 } 1424 if (toi == 0 || 1425 attypes[toi - 1].type != attypes[fromi].type) 1426 attypes[toi++] = attypes[fromi]; 1427 } 1428 timecnt = toi; 1429 } 1430 /* 1431 ** Transfer. 1432 */ 1433 for (i = 0; i < timecnt; ++i) { 1434 ats[i] = attypes[i].at; 1435 types[i] = attypes[i].type; 1436 } 1437 fullname = erealloc(fullname, 1438 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1439 (void) sprintf(fullname, "%s/%s", directory, name); /* XXX: sprintf is safe */ 1440 /* 1441 ** Remove old file, if any, to snap links. 1442 */ 1443 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { 1444 const char *e = strerror(errno); 1445 1446 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), 1447 progname, fullname, e); 1448 (void) exit(EXIT_FAILURE); 1449 } 1450 if ((fp = fopen(fullname, "wb")) == NULL) { 1451 if (mkdirs(fullname) != 0) 1452 (void) exit(EXIT_FAILURE); 1453 if ((fp = fopen(fullname, "wb")) == NULL) { 1454 const char *e = strerror(errno); 1455 1456 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), 1457 progname, fullname, e); 1458 (void) exit(EXIT_FAILURE); 1459 } 1460 } 1461 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1462 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1463 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1464 convert(eitol(timecnt), tzh.tzh_timecnt); 1465 convert(eitol(typecnt), tzh.tzh_typecnt); 1466 convert(eitol(charcnt), tzh.tzh_charcnt); 1467 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1468 DO(tzh_reserved); 1469 DO(tzh_ttisgmtcnt); 1470 DO(tzh_ttisstdcnt); 1471 DO(tzh_leapcnt); 1472 DO(tzh_timecnt); 1473 DO(tzh_typecnt); 1474 DO(tzh_charcnt); 1475 #undef DO 1476 for (i = 0; i < timecnt; ++i) { 1477 j = leapcnt; 1478 while (--j >= 0) 1479 if (ats[i] >= trans[j]) { 1480 ats[i] = tadd(ats[i], corr[j]); 1481 break; 1482 } 1483 puttzcode((long) ats[i], fp); 1484 } 1485 if (timecnt > 0) 1486 (void) fwrite((void *) types, (size_t) sizeof types[0], 1487 (size_t) timecnt, fp); 1488 for (i = 0; i < typecnt; ++i) { 1489 puttzcode((long) gmtoffs[i], fp); 1490 (void) putc(isdsts[i], fp); 1491 (void) putc(abbrinds[i], fp); 1492 } 1493 if (charcnt != 0) 1494 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1495 (size_t) charcnt, fp); 1496 for (i = 0; i < leapcnt; ++i) { 1497 if (roll[i]) { 1498 if (timecnt == 0 || trans[i] < ats[0]) { 1499 j = 0; 1500 while (isdsts[j]) 1501 if (++j >= typecnt) { 1502 j = 0; 1503 break; 1504 } 1505 } else { 1506 j = 1; 1507 while (j < timecnt && trans[i] >= ats[j]) 1508 ++j; 1509 j = types[j - 1]; 1510 } 1511 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1512 } else puttzcode((long) trans[i], fp); 1513 puttzcode((long) corr[i], fp); 1514 } 1515 for (i = 0; i < typecnt; ++i) 1516 (void) putc(ttisstds[i], fp); 1517 for (i = 0; i < typecnt; ++i) 1518 (void) putc(ttisgmts[i], fp); 1519 if (ferror(fp) || fclose(fp)) { 1520 (void) fprintf(stderr, _("%s: Error writing %s\n"), 1521 progname, fullname); 1522 (void) exit(EXIT_FAILURE); 1523 } 1524 } 1525 1526 static void 1527 doabbr(abbr, abbrlen, format, letters, isdst) 1528 char * const abbr; 1529 const int abbrlen; 1530 const char * const format; 1531 const char * const letters; 1532 const int isdst; 1533 { 1534 if (strchr(format, '/') == NULL) { 1535 if (letters == NULL) 1536 (void)strncpy(abbr, format, abbrlen - 1); 1537 else 1538 (void)snprintf(abbr, abbrlen, format, letters); 1539 } else if (isdst) 1540 (void)strncpy(abbr, strchr(format, '/') + 1, abbrlen - 1); 1541 else { 1542 (void)strncpy(abbr, format, abbrlen - 1); 1543 *strchr(abbr, '/') = '\0'; 1544 } 1545 } 1546 1547 static void 1548 outzone(zpfirst, zonecount) 1549 const struct zone * const zpfirst; 1550 const int zonecount; 1551 { 1552 register const struct zone * zp; 1553 register struct rule * rp; 1554 register int i, j; 1555 register int usestart, useuntil; 1556 register time_t starttime, untiltime; 1557 register long gmtoff; 1558 register long stdoff; 1559 register int year; 1560 register long startoff; 1561 register int startttisstd; 1562 register int startttisgmt; 1563 register int type; 1564 char startbuf[BUFSIZ]; 1565 1566 INITIALIZE(untiltime); 1567 INITIALIZE(starttime); 1568 /* 1569 ** Now. . .finally. . .generate some useful data! 1570 */ 1571 timecnt = 0; 1572 typecnt = 0; 1573 charcnt = 0; 1574 /* 1575 ** A guess that may well be corrected later. 1576 */ 1577 stdoff = 0; 1578 /* 1579 ** Thanks to Earl Chew (earl (at) dnd.icp.nec.com.au) 1580 ** for noting the need to unconditionally initialize startttisstd. 1581 */ 1582 startttisstd = FALSE; 1583 startttisgmt = FALSE; 1584 for (i = 0; i < zonecount; ++i) { 1585 zp = &zpfirst[i]; 1586 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1587 useuntil = i < (zonecount - 1); 1588 if (useuntil && zp->z_untiltime <= min_time) 1589 continue; 1590 gmtoff = zp->z_gmtoff; 1591 eat(zp->z_filename, zp->z_linenum); 1592 *startbuf = '\0'; 1593 startoff = zp->z_gmtoff; 1594 if (zp->z_nrules == 0) { 1595 stdoff = zp->z_stdoff; 1596 doabbr(startbuf, sizeof startbuf, zp->z_format, 1597 (char *) NULL, stdoff != 0); 1598 type = addtype(oadd(zp->z_gmtoff, stdoff), 1599 startbuf, stdoff != 0, startttisstd, 1600 startttisgmt); 1601 if (usestart) { 1602 addtt(starttime, type); 1603 usestart = FALSE; 1604 } 1605 else if (stdoff != 0) 1606 addtt(min_time, type); 1607 } else for (year = min_year; year <= max_year; ++year) { 1608 if (useuntil && year > zp->z_untilrule.r_hiyear) 1609 break; 1610 /* 1611 ** Mark which rules to do in the current year. 1612 ** For those to do, calculate rpytime(rp, year); 1613 */ 1614 for (j = 0; j < zp->z_nrules; ++j) { 1615 rp = &zp->z_rules[j]; 1616 eats(zp->z_filename, zp->z_linenum, 1617 rp->r_filename, rp->r_linenum); 1618 rp->r_todo = year >= rp->r_loyear && 1619 year <= rp->r_hiyear && 1620 yearistype(year, rp->r_yrtype); 1621 if (rp->r_todo) 1622 rp->r_temp = rpytime(rp, year); 1623 } 1624 for ( ; ; ) { 1625 register int k; 1626 register time_t jtime, ktime; 1627 register long offset; 1628 char buf[BUFSIZ]; 1629 1630 INITIALIZE(ktime); 1631 if (useuntil) { 1632 /* 1633 ** Turn untiltime into GMT 1634 ** assuming the current gmtoff and 1635 ** stdoff values. 1636 */ 1637 untiltime = zp->z_untiltime; 1638 if (!zp->z_untilrule.r_todisgmt) 1639 untiltime = tadd(untiltime, 1640 -gmtoff); 1641 if (!zp->z_untilrule.r_todisstd) 1642 untiltime = tadd(untiltime, 1643 -stdoff); 1644 } 1645 /* 1646 ** Find the rule (of those to do, if any) 1647 ** that takes effect earliest in the year. 1648 */ 1649 k = -1; 1650 for (j = 0; j < zp->z_nrules; ++j) { 1651 rp = &zp->z_rules[j]; 1652 if (!rp->r_todo) 1653 continue; 1654 eats(zp->z_filename, zp->z_linenum, 1655 rp->r_filename, rp->r_linenum); 1656 offset = rp->r_todisgmt ? 0 : gmtoff; 1657 if (!rp->r_todisstd) 1658 offset = oadd(offset, stdoff); 1659 jtime = rp->r_temp; 1660 if (jtime == min_time || 1661 jtime == max_time) 1662 continue; 1663 jtime = tadd(jtime, -offset); 1664 if (k < 0 || jtime < ktime) { 1665 k = j; 1666 ktime = jtime; 1667 } 1668 } 1669 if (k < 0) 1670 break; /* go on to next year */ 1671 rp = &zp->z_rules[k]; 1672 rp->r_todo = FALSE; 1673 if (useuntil && ktime >= untiltime) 1674 break; 1675 stdoff = rp->r_stdoff; 1676 if (usestart && ktime == starttime) 1677 usestart = FALSE; 1678 if (usestart) { 1679 if (ktime < starttime) { 1680 startoff = oadd(zp->z_gmtoff, 1681 stdoff); 1682 doabbr(startbuf,sizeof startbuf, 1683 zp->z_format, 1684 rp->r_abbrvar, 1685 rp->r_stdoff != 0); 1686 continue; 1687 } 1688 if (*startbuf == '\0' && 1689 startoff == oadd(zp->z_gmtoff, 1690 stdoff)) { 1691 doabbr(startbuf,sizeof startbuf, 1692 zp->z_format, 1693 rp->r_abbrvar, 1694 rp->r_stdoff != 0); 1695 } 1696 } 1697 eats(zp->z_filename, zp->z_linenum, 1698 rp->r_filename, rp->r_linenum); 1699 doabbr(buf, sizeof buf, zp->z_format, 1700 rp->r_abbrvar, rp->r_stdoff != 0); 1701 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1702 type = addtype(offset, buf, rp->r_stdoff != 0, 1703 rp->r_todisstd, rp->r_todisgmt); 1704 addtt(ktime, type); 1705 } 1706 } 1707 if (usestart) { 1708 if (*startbuf == '\0' && 1709 zp->z_format != NULL && 1710 strchr(zp->z_format, '%') == NULL && 1711 strchr(zp->z_format, '/') == NULL) 1712 (void)strncpy(startbuf, zp->z_format, 1713 sizeof(startbuf) - 1); 1714 eat(zp->z_filename, zp->z_linenum); 1715 if (*startbuf == '\0') 1716 error(_("can't determine time zone abbreviation to use just after until time")); 1717 else addtt(starttime, 1718 addtype(startoff, startbuf, 1719 startoff != zp->z_gmtoff, 1720 startttisstd, 1721 startttisgmt)); 1722 } 1723 /* 1724 ** Now we may get to set starttime for the next zone line. 1725 */ 1726 if (useuntil) { 1727 startttisstd = zp->z_untilrule.r_todisstd; 1728 startttisgmt = zp->z_untilrule.r_todisgmt; 1729 starttime = zp->z_untiltime; 1730 if (!startttisstd) 1731 starttime = tadd(starttime, -stdoff); 1732 if (!startttisgmt) 1733 starttime = tadd(starttime, -gmtoff); 1734 } 1735 } 1736 writezone(zpfirst->z_name); 1737 } 1738 1739 static void 1740 addtt(starttime, type) 1741 const time_t starttime; 1742 int type; 1743 { 1744 if (starttime <= min_time || 1745 (timecnt == 1 && attypes[0].at < min_time)) { 1746 gmtoffs[0] = gmtoffs[type]; 1747 isdsts[0] = isdsts[type]; 1748 ttisstds[0] = ttisstds[type]; 1749 ttisgmts[0] = ttisgmts[type]; 1750 if (abbrinds[type] != 0) 1751 (void) strcpy(chars, &chars[abbrinds[type]]); 1752 abbrinds[0] = 0; 1753 charcnt = strlen(chars) + 1; 1754 typecnt = 1; 1755 timecnt = 0; 1756 type = 0; 1757 } 1758 if (timecnt >= TZ_MAX_TIMES) { 1759 error(_("too many transitions?!")); 1760 (void) exit(EXIT_FAILURE); 1761 } 1762 attypes[timecnt].at = starttime; 1763 attypes[timecnt].type = type; 1764 ++timecnt; 1765 } 1766 1767 static int 1768 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1769 const long gmtoff; 1770 const char * const abbr; 1771 const int isdst; 1772 const int ttisstd; 1773 const int ttisgmt; 1774 { 1775 register int i, j; 1776 1777 if (isdst != TRUE && isdst != FALSE) { 1778 error(_("internal error - addtype called with bad isdst")); 1779 (void) exit(EXIT_FAILURE); 1780 } 1781 if (ttisstd != TRUE && ttisstd != FALSE) { 1782 error(_("internal error - addtype called with bad ttisstd")); 1783 (void) exit(EXIT_FAILURE); 1784 } 1785 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1786 error(_("internal error - addtype called with bad ttisgmt")); 1787 (void) exit(EXIT_FAILURE); 1788 } 1789 /* 1790 ** See if there's already an entry for this zone type. 1791 ** If so, just return its index. 1792 */ 1793 for (i = 0; i < typecnt; ++i) { 1794 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1795 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1796 ttisstd == ttisstds[i] && 1797 ttisgmt == ttisgmts[i]) 1798 return i; 1799 } 1800 /* 1801 ** There isn't one; add a new one, unless there are already too 1802 ** many. 1803 */ 1804 if (typecnt >= TZ_MAX_TYPES) { 1805 error(_("too many local time types")); 1806 (void) exit(EXIT_FAILURE); 1807 } 1808 gmtoffs[i] = gmtoff; 1809 isdsts[i] = isdst; 1810 ttisstds[i] = ttisstd; 1811 ttisgmts[i] = ttisgmt; 1812 1813 for (j = 0; j < charcnt; ++j) 1814 if (strcmp(&chars[j], abbr) == 0) 1815 break; 1816 if (j == charcnt) 1817 newabbr(abbr); 1818 abbrinds[i] = j; 1819 ++typecnt; 1820 return i; 1821 } 1822 1823 static void 1824 leapadd(t, positive, rolling, count) 1825 const time_t t; 1826 const int positive; 1827 const int rolling; 1828 int count; 1829 { 1830 register int i, j; 1831 1832 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1833 error(_("too many leap seconds")); 1834 (void) exit(EXIT_FAILURE); 1835 } 1836 for (i = 0; i < leapcnt; ++i) 1837 if (t <= trans[i]) { 1838 if (t == trans[i]) { 1839 error(_("repeated leap second moment")); 1840 (void) exit(EXIT_FAILURE); 1841 } 1842 break; 1843 } 1844 do { 1845 for (j = leapcnt; j > i; --j) { 1846 trans[j] = trans[j - 1]; 1847 corr[j] = corr[j - 1]; 1848 roll[j] = roll[j - 1]; 1849 } 1850 trans[i] = t; 1851 corr[i] = positive ? 1L : eitol(-count); 1852 roll[i] = rolling; 1853 ++leapcnt; 1854 } while (positive && --count != 0); 1855 } 1856 1857 static void 1858 adjleap P((void)) 1859 { 1860 register int i; 1861 register long last = 0; 1862 1863 /* 1864 ** propagate leap seconds forward 1865 */ 1866 for (i = 0; i < leapcnt; ++i) { 1867 trans[i] = tadd(trans[i], last); 1868 last = corr[i] += last; 1869 } 1870 } 1871 1872 static int 1873 yearistype(year, type) 1874 const int year; 1875 const char * const type; 1876 { 1877 static char * buf; 1878 int result; 1879 1880 if (type == NULL || *type == '\0') 1881 return TRUE; 1882 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1883 (void)sprintf(buf, "%s %d %s", yitcommand, year, type); /* XXX: sprintf is safe */ 1884 result = system(buf); 1885 if (result == 0) 1886 return TRUE; 1887 if (result == (1 << 8)) 1888 return FALSE; 1889 error(_("Wild result from command execution")); 1890 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), 1891 progname, buf, result); 1892 for ( ; ; ) 1893 (void) exit(EXIT_FAILURE); 1894 } 1895 1896 static int 1897 lowerit(a) 1898 int a; 1899 { 1900 a = (unsigned char) a; 1901 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1902 } 1903 1904 static int 1905 ciequal(ap, bp) /* case-insensitive equality */ 1906 register const char * ap; 1907 register const char * bp; 1908 { 1909 while (lowerit(*ap) == lowerit(*bp++)) 1910 if (*ap++ == '\0') 1911 return TRUE; 1912 return FALSE; 1913 } 1914 1915 static int 1916 itsabbr(abbr, word) 1917 register const char * abbr; 1918 register const char * word; 1919 { 1920 if (lowerit(*abbr) != lowerit(*word)) 1921 return FALSE; 1922 ++word; 1923 while (*++abbr != '\0') 1924 do { 1925 if (*word == '\0') 1926 return FALSE; 1927 } while (lowerit(*word++) != lowerit(*abbr)); 1928 return TRUE; 1929 } 1930 1931 static const struct lookup * 1932 byword(word, table) 1933 register const char * const word; 1934 register const struct lookup * const table; 1935 { 1936 register const struct lookup * foundlp; 1937 register const struct lookup * lp; 1938 1939 if (word == NULL || table == NULL) 1940 return NULL; 1941 /* 1942 ** Look for exact match. 1943 */ 1944 for (lp = table; lp->l_word != NULL; ++lp) 1945 if (ciequal(word, lp->l_word)) 1946 return lp; 1947 /* 1948 ** Look for inexact match. 1949 */ 1950 foundlp = NULL; 1951 for (lp = table; lp->l_word != NULL; ++lp) 1952 if (itsabbr(word, lp->l_word)) 1953 if (foundlp == NULL) 1954 foundlp = lp; 1955 else return NULL; /* multiple inexact matches */ 1956 return foundlp; 1957 } 1958 1959 static char ** 1960 getfields(cp) 1961 register char * cp; 1962 { 1963 register char * dp; 1964 register char ** array; 1965 register int nsubs; 1966 1967 if (cp == NULL) 1968 return NULL; 1969 array = (char **) (void *) 1970 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 1971 nsubs = 0; 1972 for ( ; ; ) { 1973 while (isascii(*cp) && isspace((unsigned char) *cp)) 1974 ++cp; 1975 if (*cp == '\0' || *cp == '#') 1976 break; 1977 array[nsubs++] = dp = cp; 1978 do { 1979 if ((*dp = *cp++) != '"') 1980 ++dp; 1981 else while ((*dp = *cp++) != '"') 1982 if (*dp != '\0') 1983 ++dp; 1984 else error(_("Odd number of quotation marks")); 1985 } while (*cp != '\0' && *cp != '#' && 1986 (!isascii(*cp) || !isspace((unsigned char) *cp))); 1987 if (isascii(*cp) && isspace((unsigned char) *cp)) 1988 ++cp; 1989 *dp = '\0'; 1990 } 1991 array[nsubs] = NULL; 1992 return array; 1993 } 1994 1995 static long 1996 oadd(t1, t2) 1997 const long t1; 1998 const long t2; 1999 { 2000 register long t; 2001 2002 t = t1 + t2; 2003 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2004 error(_("time overflow")); 2005 (void) exit(EXIT_FAILURE); 2006 } 2007 return t; 2008 } 2009 2010 static time_t 2011 tadd(t1, t2) 2012 const time_t t1; 2013 const long t2; 2014 { 2015 register time_t t; 2016 2017 if (t1 == max_time && t2 > 0) 2018 return max_time; 2019 if (t1 == min_time && t2 < 0) 2020 return min_time; 2021 t = t1 + t2; 2022 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2023 error(_("time overflow")); 2024 (void) exit(EXIT_FAILURE); 2025 } 2026 return t; 2027 } 2028 2029 /* 2030 ** Given a rule, and a year, compute the date - in seconds since January 1, 2031 ** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2032 */ 2033 2034 static time_t 2035 rpytime(rp, wantedy) 2036 register const struct rule * const rp; 2037 register const int wantedy; 2038 { 2039 register int y, m, i; 2040 register long dayoff; /* with a nod to Margaret O. */ 2041 register time_t t; 2042 2043 if (wantedy == INT_MIN) 2044 return min_time; 2045 if (wantedy == INT_MAX) 2046 return max_time; 2047 dayoff = 0; 2048 m = TM_JANUARY; 2049 y = EPOCH_YEAR; 2050 while (wantedy != y) { 2051 if (wantedy > y) { 2052 i = len_years[isleap(y)]; 2053 ++y; 2054 } else { 2055 --y; 2056 i = -len_years[isleap(y)]; 2057 } 2058 dayoff = oadd(dayoff, eitol(i)); 2059 } 2060 while (m != rp->r_month) { 2061 i = len_months[isleap(y)][m]; 2062 dayoff = oadd(dayoff, eitol(i)); 2063 ++m; 2064 } 2065 i = rp->r_dayofmonth; 2066 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2067 if (rp->r_dycode == DC_DOWLEQ) 2068 --i; 2069 else { 2070 error(_("use of 2/29 in non leap-year")); 2071 (void) exit(EXIT_FAILURE); 2072 } 2073 } 2074 --i; 2075 dayoff = oadd(dayoff, eitol(i)); 2076 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2077 register long wday; 2078 2079 #define LDAYSPERWEEK ((long) DAYSPERWEEK) 2080 wday = eitol(EPOCH_WDAY); 2081 /* 2082 ** Don't trust mod of negative numbers. 2083 */ 2084 if (dayoff >= 0) 2085 wday = (wday + dayoff) % LDAYSPERWEEK; 2086 else { 2087 wday -= ((-dayoff) % LDAYSPERWEEK); 2088 if (wday < 0) 2089 wday += LDAYSPERWEEK; 2090 } 2091 while (wday != eitol(rp->r_wday)) 2092 if (rp->r_dycode == DC_DOWGEQ) { 2093 dayoff = oadd(dayoff, (long) 1); 2094 if (++wday >= LDAYSPERWEEK) 2095 wday = 0; 2096 ++i; 2097 } else { 2098 dayoff = oadd(dayoff, (long) -1); 2099 if (--wday < 0) 2100 wday = LDAYSPERWEEK - 1; 2101 --i; 2102 } 2103 if (i < 0 || i >= len_months[isleap(y)][m]) { 2104 error(_("no day in month matches rule")); 2105 (void) exit(EXIT_FAILURE); 2106 } 2107 } 2108 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2109 return min_time; 2110 t = (time_t) dayoff * SECSPERDAY; 2111 /* 2112 ** Cheap overflow check. 2113 */ 2114 if (t / SECSPERDAY != dayoff) 2115 return (dayoff > 0) ? max_time : min_time; 2116 return tadd(t, rp->r_tod); 2117 } 2118 2119 static void 2120 newabbr(string) 2121 const char * const string; 2122 { 2123 register int i; 2124 2125 i = strlen(string) + 1; 2126 if (charcnt + i > TZ_MAX_CHARS) { 2127 error(_("too many, or too long, time zone abbreviations")); 2128 (void) exit(EXIT_FAILURE); 2129 } 2130 (void)strncpy(&chars[charcnt], string, sizeof(chars) - charcnt - 1); 2131 charcnt += eitol(i); 2132 } 2133 2134 static int 2135 mkdirs(argname) 2136 char * const argname; 2137 { 2138 register char * name; 2139 register char * cp; 2140 2141 if (argname == NULL || *argname == '\0') 2142 return 0; 2143 cp = name = ecpyalloc(argname); 2144 while ((cp = strchr(cp + 1, '/')) != 0) { 2145 *cp = '\0'; 2146 #ifndef unix 2147 /* 2148 ** DOS drive specifier? 2149 */ 2150 if (isalpha((unsigned char) name[0]) && 2151 name[1] == ':' && name[2] == '\0') { 2152 *cp = '/'; 2153 continue; 2154 } 2155 #endif /* !defined unix */ 2156 if (!itsdir(name)) { 2157 /* 2158 ** It doesn't seem to exist, so we try to create it. 2159 ** Creation may fail because of the directory being 2160 ** created by some other multiprocessor, so we get 2161 ** to do extra checking. 2162 */ 2163 if (mkdir(name, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) { 2164 const char *e = strerror(errno); 2165 2166 if (errno != EEXIST || !itsdir(name)) { 2167 (void) fprintf(stderr, 2168 _("%s: Can't create directory %s: %s\n"), 2169 progname, name, e); 2170 ifree(name); 2171 return -1; 2172 } 2173 } 2174 } 2175 *cp = '/'; 2176 } 2177 ifree(name); 2178 return 0; 2179 } 2180 2181 static long 2182 eitol(i) 2183 const int i; 2184 { 2185 long l; 2186 2187 l = i; 2188 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { 2189 (void) fprintf(stderr, 2190 _("%s: %d did not sign extend correctly\n"), 2191 progname, i); 2192 (void) exit(EXIT_FAILURE); 2193 } 2194 return l; 2195 } 2196 2197 /* 2198 ** UNIX was a registered trademark of UNIX System Laboratories in 1993. 2199 */ 2200
Indexes created Thu Oct 02 14:10:14 GMT 2025