zic.c revision 1.7
1 /* $NetBSD: zic.c,v 1.7 1997/06/18 01:13:03 jtc 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 #ifdef unix 13 #include "sys/stat.h" /* for umask manifest constants */ 14 #endif /* defined unix */ 15 16 /* 17 ** On some ancient hosts, predicates like `isspace(C)' are defined 18 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, 19 ** which says they are defined only if C == ((unsigned char) C) || C == EOF. 20 ** Neither the C Standard nor Posix require that `isascii' exist. 21 ** For portability, we check both ancient and modern requirements. 22 ** If isascii is not defined, the isascii check succeeds trivially. 23 */ 24 #include "ctype.h" 25 #ifndef isascii 26 #define isascii(x) 1 27 #endif 28 29 struct rule { 30 const char * r_filename; 31 int r_linenum; 32 const char * r_name; 33 34 int r_loyear; /* for example, 1986 */ 35 int r_hiyear; /* for example, 1986 */ 36 const char * r_yrtype; 37 38 int r_month; /* 0..11 */ 39 40 int r_dycode; /* see below */ 41 int r_dayofmonth; 42 int r_wday; 43 44 long r_tod; /* time from midnight */ 45 int r_todisstd; /* above is standard time if TRUE */ 46 /* or wall clock time if FALSE */ 47 int r_todisgmt; /* above is GMT if TRUE */ 48 /* or local time if FALSE */ 49 long r_stdoff; /* offset from standard time */ 50 const char * r_abbrvar; /* variable part of abbreviation */ 51 52 int r_todo; /* a rule to do (used in outzone) */ 53 time_t r_temp; /* used in outzone */ 54 }; 55 56 /* 57 ** r_dycode r_dayofmonth r_wday 58 */ 59 60 #define DC_DOM 0 /* 1..31 */ /* unused */ 61 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ 62 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ 63 64 struct zone { 65 const char * z_filename; 66 int z_linenum; 67 68 const char * z_name; 69 long z_gmtoff; 70 const char * z_rule; 71 const char * z_format; 72 73 long z_stdoff; 74 75 struct rule * z_rules; 76 int z_nrules; 77 78 struct rule z_untilrule; 79 time_t z_untiltime; 80 }; 81 82 extern int getopt P((int argc, char * const argv[], 83 const char * options)); 84 extern int link P((const char * fromname, const char * toname)); 85 extern char * optarg; 86 extern int optind; 87 88 static void addtt P((time_t starttime, int type)); 89 static int addtype P((long gmtoff, const char * abbr, int isdst, 90 int ttisstd, int ttisgmt)); 91 static void leapadd P((time_t t, int positive, int rolling, int count)); 92 static void adjleap P((void)); 93 static void associate P((void)); 94 static int ciequal P((const char * ap, const char * bp)); 95 static void convert P((long val, char * buf)); 96 static void dolink P((const char * fromfile, const char * tofile)); 97 static void doabbr P((char * abbr, int abbrlen, const char * format, 98 const char * letters, int isdst)); 99 static void eat P((const char * name, int num)); 100 static void eats P((const char * name, int num, 101 const char * rname, int rnum)); 102 static long eitol P((int i)); 103 static void error P((const char * message)); 104 static char ** getfields P((char * buf)); 105 static long gethms P((const char * string, const char * errstrng, 106 int signable)); 107 static void infile P((const char * filename)); 108 static void inleap P((char ** fields, int nfields)); 109 static void inlink P((char ** fields, int nfields)); 110 static void inrule P((char ** fields, int nfields)); 111 static int inzcont P((char ** fields, int nfields)); 112 static int inzone P((char ** fields, int nfields)); 113 static int inzsub P((char ** fields, int nfields, int iscont)); 114 static int itsabbr P((const char * abbr, const char * word)); 115 static int itsdir P((const char * name)); 116 static int lowerit P((int c)); 117 static char * memcheck P((char * tocheck)); 118 static int mkdirs P((char * filename)); 119 static void newabbr P((const char * abbr)); 120 static long oadd P((long t1, long t2)); 121 static void outzone P((const struct zone * zp, int ntzones)); 122 static void puttzcode P((long code, FILE * fp)); 123 static int rcomp P((const void * leftp, const void * rightp)); 124 static time_t rpytime P((const struct rule * rp, int wantedy)); 125 static void rulesub P((struct rule * rp, 126 const char * loyearp, const char * hiyearp, 127 const char * typep, const char * monthp, 128 const char * dayp, const char * timep)); 129 static void setboundaries P((void)); 130 static time_t tadd P((time_t t1, long t2)); 131 static void usage P((void)); 132 static void writezone P((const char * name)); 133 static int yearistype P((int year, const char * type)); 134 135 #if !(HAVE_STRERROR - 0) 136 static char * strerror P((int)); 137 #endif /* !(HAVE_STRERROR - 0) */ 138 139 static int charcnt; 140 static int errors; 141 static const char * filename; 142 static int leapcnt; 143 static int linenum; 144 static time_t max_time; 145 static int max_year; 146 static int max_year_representable; 147 static time_t min_time; 148 static int min_year; 149 static int min_year_representable; 150 static int noise; 151 static const char * rfilename; 152 static int rlinenum; 153 static const char * progname; 154 static int timecnt; 155 static int typecnt; 156 157 /* 158 ** Line codes. 159 */ 160 161 #define LC_RULE 0 162 #define LC_ZONE 1 163 #define LC_LINK 2 164 #define LC_LEAP 3 165 166 /* 167 ** Which fields are which on a Zone line. 168 */ 169 170 #define ZF_NAME 1 171 #define ZF_GMTOFF 2 172 #define ZF_RULE 3 173 #define ZF_FORMAT 4 174 #define ZF_TILYEAR 5 175 #define ZF_TILMONTH 6 176 #define ZF_TILDAY 7 177 #define ZF_TILTIME 8 178 #define ZONE_MINFIELDS 5 179 #define ZONE_MAXFIELDS 9 180 181 /* 182 ** Which fields are which on a Zone continuation line. 183 */ 184 185 #define ZFC_GMTOFF 0 186 #define ZFC_RULE 1 187 #define ZFC_FORMAT 2 188 #define ZFC_TILYEAR 3 189 #define ZFC_TILMONTH 4 190 #define ZFC_TILDAY 5 191 #define ZFC_TILTIME 6 192 #define ZONEC_MINFIELDS 3 193 #define ZONEC_MAXFIELDS 7 194 195 /* 196 ** Which files are which on a Rule line. 197 */ 198 199 #define RF_NAME 1 200 #define RF_LOYEAR 2 201 #define RF_HIYEAR 3 202 #define RF_COMMAND 4 203 #define RF_MONTH 5 204 #define RF_DAY 6 205 #define RF_TOD 7 206 #define RF_STDOFF 8 207 #define RF_ABBRVAR 9 208 #define RULE_FIELDS 10 209 210 /* 211 ** Which fields are which on a Link line. 212 */ 213 214 #define LF_FROM 1 215 #define LF_TO 2 216 #define LINK_FIELDS 3 217 218 /* 219 ** Which fields are which on a Leap line. 220 */ 221 222 #define LP_YEAR 1 223 #define LP_MONTH 2 224 #define LP_DAY 3 225 #define LP_TIME 4 226 #define LP_CORR 5 227 #define LP_ROLL 6 228 #define LEAP_FIELDS 7 229 230 /* 231 ** Year synonyms. 232 */ 233 234 #define YR_MINIMUM 0 235 #define YR_MAXIMUM 1 236 #define YR_ONLY 2 237 238 static struct rule * rules; 239 static int nrules; /* number of rules */ 240 241 static struct zone * zones; 242 static int nzones; /* number of zones */ 243 244 struct link { 245 const char * l_filename; 246 int l_linenum; 247 const char * l_from; 248 const char * l_to; 249 }; 250 251 static struct link * links; 252 static int nlinks; 253 254 struct lookup { 255 const char * l_word; 256 const int l_value; 257 }; 258 259 static struct lookup const * byword P((const char * string, 260 const struct lookup * lp)); 261 262 static struct lookup const line_codes[] = { 263 { "Rule", LC_RULE }, 264 { "Zone", LC_ZONE }, 265 { "Link", LC_LINK }, 266 { "Leap", LC_LEAP }, 267 { NULL, 0} 268 }; 269 270 static struct lookup const mon_names[] = { 271 { "January", TM_JANUARY }, 272 { "February", TM_FEBRUARY }, 273 { "March", TM_MARCH }, 274 { "April", TM_APRIL }, 275 { "May", TM_MAY }, 276 { "June", TM_JUNE }, 277 { "July", TM_JULY }, 278 { "August", TM_AUGUST }, 279 { "September", TM_SEPTEMBER }, 280 { "October", TM_OCTOBER }, 281 { "November", TM_NOVEMBER }, 282 { "December", TM_DECEMBER }, 283 { NULL, 0 } 284 }; 285 286 static struct lookup const wday_names[] = { 287 { "Sunday", TM_SUNDAY }, 288 { "Monday", TM_MONDAY }, 289 { "Tuesday", TM_TUESDAY }, 290 { "Wednesday", TM_WEDNESDAY }, 291 { "Thursday", TM_THURSDAY }, 292 { "Friday", TM_FRIDAY }, 293 { "Saturday", TM_SATURDAY }, 294 { NULL, 0 } 295 }; 296 297 static struct lookup const lasts[] = { 298 { "last-Sunday", TM_SUNDAY }, 299 { "last-Monday", TM_MONDAY }, 300 { "last-Tuesday", TM_TUESDAY }, 301 { "last-Wednesday", TM_WEDNESDAY }, 302 { "last-Thursday", TM_THURSDAY }, 303 { "last-Friday", TM_FRIDAY }, 304 { "last-Saturday", TM_SATURDAY }, 305 { NULL, 0 } 306 }; 307 308 static struct lookup const begin_years[] = { 309 { "minimum", YR_MINIMUM }, 310 { "maximum", YR_MAXIMUM }, 311 { NULL, 0 } 312 }; 313 314 static struct lookup const end_years[] = { 315 { "minimum", YR_MINIMUM }, 316 { "maximum", YR_MAXIMUM }, 317 { "only", YR_ONLY }, 318 { NULL, 0 } 319 }; 320 321 static struct lookup const leap_types[] = { 322 { "Rolling", TRUE }, 323 { "Stationary", FALSE }, 324 { NULL, 0 } 325 }; 326 327 static const int len_months[2][MONSPERYEAR] = { 328 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, 329 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } 330 }; 331 332 static const int len_years[2] = { 333 DAYSPERNYEAR, DAYSPERLYEAR 334 }; 335 336 static struct attype { 337 time_t at; 338 unsigned char type; 339 } attypes[TZ_MAX_TIMES]; 340 static long gmtoffs[TZ_MAX_TYPES]; 341 static char isdsts[TZ_MAX_TYPES]; 342 static unsigned char abbrinds[TZ_MAX_TYPES]; 343 static char ttisstds[TZ_MAX_TYPES]; 344 static char ttisgmts[TZ_MAX_TYPES]; 345 static char chars[TZ_MAX_CHARS]; 346 static time_t trans[TZ_MAX_LEAPS]; 347 static long corr[TZ_MAX_LEAPS]; 348 static char roll[TZ_MAX_LEAPS]; 349 350 /* 351 ** Memory allocation. 352 */ 353 354 static char * 355 memcheck(ptr) 356 char * const ptr; 357 { 358 if (ptr == NULL) { 359 const char *e = strerror(errno); 360 361 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"), 362 progname, e); 363 (void) exit(EXIT_FAILURE); 364 } 365 return ptr; 366 } 367 368 #define emalloc(size) memcheck(imalloc(size)) 369 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) 370 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) 371 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) 372 373 /* 374 ** Error handling. 375 */ 376 377 #if !(HAVE_STRERROR - 0) 378 static char * 379 strerror(errnum) 380 int errnum; 381 { 382 extern char * sys_errlist[]; 383 extern int sys_nerr; 384 385 return (errnum > 0 && errnum <= sys_nerr) ? 386 sys_errlist[errnum] : "Unknown system error"; 387 } 388 #endif /* !(HAVE_STRERROR - 0) */ 389 390 static void 391 eats(name, num, rname, rnum) 392 const char * const name; 393 const int num; 394 const char * const rname; 395 const int rnum; 396 { 397 filename = name; 398 linenum = num; 399 rfilename = rname; 400 rlinenum = rnum; 401 } 402 403 static void 404 eat(name, num) 405 const char * const name; 406 const int num; 407 { 408 eats(name, num, (char *) NULL, -1); 409 } 410 411 static void 412 error(string) 413 const char * const string; 414 { 415 /* 416 ** Match the format of "cc" to allow sh users to 417 ** zic ... 2>&1 | error -t "*" -v 418 ** on BSD systems. 419 */ 420 (void) fprintf(stderr, _("\"%s\", line %d: %s"), 421 filename, linenum, string); 422 if (rfilename != NULL) 423 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), 424 rfilename, rlinenum); 425 (void) fprintf(stderr, "\n"); 426 ++errors; 427 } 428 429 static void 430 warning(string) 431 const char * const string; 432 { 433 char * cp; 434 435 cp = ecpyalloc("warning: "); 436 cp = ecatalloc(cp, string); 437 error(cp); 438 ifree(cp); 439 --errors; 440 } 441 442 static void 443 usage P((void)) 444 { 445 (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), 446 progname, progname); 447 (void) exit(EXIT_FAILURE); 448 } 449 450 static const char * psxrules; 451 static const char * lcltime; 452 static const char * directory; 453 static const char * leapsec; 454 static const char * yitcommand; 455 static int sflag = FALSE; 456 457 int 458 main(argc, argv) 459 int argc; 460 char * argv[]; 461 { 462 register int i; 463 register int j; 464 register int c; 465 466 #ifdef unix 467 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); 468 #endif /* defined unix */ 469 #if HAVE_GETTEXT - 0 470 (void) setlocale(LC_MESSAGES, ""); 471 #ifdef TZ_DOMAINDIR 472 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); 473 #endif /* defined TEXTDOMAINDIR */ 474 (void) textdomain(TZ_DOMAIN); 475 #endif /* HAVE_GETTEXT - 0 */ 476 progname = argv[0]; 477 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) 478 switch (c) { 479 default: 480 usage(); 481 case 'd': 482 if (directory == NULL) 483 directory = optarg; 484 else { 485 (void) fprintf(stderr, 486 _("%s: More than one -d option specified\n"), 487 progname); 488 (void) exit(EXIT_FAILURE); 489 } 490 break; 491 case 'l': 492 if (lcltime == NULL) 493 lcltime = optarg; 494 else { 495 (void) fprintf(stderr, 496 _("%s: More than one -l option specified\n"), 497 progname); 498 (void) exit(EXIT_FAILURE); 499 } 500 break; 501 case 'p': 502 if (psxrules == NULL) 503 psxrules = optarg; 504 else { 505 (void) fprintf(stderr, 506 _("%s: More than one -p option specified\n"), 507 progname); 508 (void) exit(EXIT_FAILURE); 509 } 510 break; 511 case 'y': 512 if (yitcommand == NULL) 513 yitcommand = optarg; 514 else { 515 (void) fprintf(stderr, 516 _("%s: More than one -y option specified\n"), 517 progname); 518 (void) exit(EXIT_FAILURE); 519 } 520 break; 521 case 'L': 522 if (leapsec == NULL) 523 leapsec = optarg; 524 else { 525 (void) fprintf(stderr, 526 _("%s: More than one -L option specified\n"), 527 progname); 528 (void) exit(EXIT_FAILURE); 529 } 530 break; 531 case 'v': 532 noise = TRUE; 533 break; 534 case 's': 535 sflag = TRUE; 536 break; 537 } 538 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 539 usage(); /* usage message by request */ 540 if (directory == NULL) 541 directory = TZDIR; 542 if (yitcommand == NULL) 543 yitcommand = "yearistype"; 544 545 setboundaries(); 546 547 if (optind < argc && leapsec != NULL) { 548 infile(leapsec); 549 adjleap(); 550 } 551 552 for (i = optind; i < argc; ++i) 553 infile(argv[i]); 554 if (errors) 555 (void) exit(EXIT_FAILURE); 556 associate(); 557 for (i = 0; i < nzones; i = j) { 558 /* 559 ** Find the next non-continuation zone entry. 560 */ 561 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 562 continue; 563 outzone(&zones[i], j - i); 564 } 565 /* 566 ** Make links. 567 */ 568 for (i = 0; i < nlinks; ++i) 569 dolink(links[i].l_from, links[i].l_to); 570 if (lcltime != NULL) 571 dolink(lcltime, TZDEFAULT); 572 if (psxrules != NULL) 573 dolink(psxrules, TZDEFRULES); 574 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 575 } 576 577 static void 578 dolink(fromfile, tofile) 579 const char * const fromfile; 580 const char * const tofile; 581 { 582 register char * fromname; 583 register char * toname; 584 585 if (fromfile[0] == '/') 586 fromname = ecpyalloc(fromfile); 587 else { 588 fromname = ecpyalloc(directory); 589 fromname = ecatalloc(fromname, "/"); 590 fromname = ecatalloc(fromname, fromfile); 591 } 592 if (tofile[0] == '/') 593 toname = ecpyalloc(tofile); 594 else { 595 toname = ecpyalloc(directory); 596 toname = ecatalloc(toname, "/"); 597 toname = ecatalloc(toname, tofile); 598 } 599 /* 600 ** We get to be careful here since 601 ** there's a fair chance of root running us. 602 */ 603 if (!itsdir(toname)) 604 (void) remove(toname); 605 if (link(fromname, toname) != 0) { 606 if (mkdirs(toname) != 0) 607 (void) exit(EXIT_FAILURE); 608 if (link(fromname, toname) != 0) { 609 const char *e = strerror(errno); 610 611 (void) fprintf(stderr, 612 _("%s: Can't link from %s to %s: %s\n"), 613 progname, fromname, toname, e); 614 (void) exit(EXIT_FAILURE); 615 } 616 } 617 ifree(fromname); 618 ifree(toname); 619 } 620 621 #ifndef INT_MAX 622 #define INT_MAX ((int) (((unsigned)~0)>>1)) 623 #endif /* !defined INT_MAX */ 624 625 #ifndef INT_MIN 626 #define INT_MIN ((int) ~(((unsigned)~0)>>1)) 627 #endif /* !defined INT_MIN */ 628 629 /* 630 ** The tz file format currently allows at most 32-bit quantities. 631 ** This restriction should be removed before signed 32-bit values 632 ** wrap around in 2038, but unfortunately this will require a 633 ** change to the tz file format. 634 */ 635 636 #define MAX_BITS_IN_FILE 32 637 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) 638 639 static void 640 setboundaries P((void)) 641 { 642 if (TYPE_SIGNED(time_t)) { 643 min_time = ~ (time_t) 0; 644 min_time <<= TIME_T_BITS_IN_FILE - 1; 645 max_time = ~ (time_t) 0 - min_time; 646 if (sflag) 647 min_time = 0; 648 } else { 649 min_time = 0; 650 max_time = 2 - sflag; 651 max_time <<= TIME_T_BITS_IN_FILE - 1; 652 --max_time; 653 } 654 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; 655 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; 656 min_year_representable = min_year; 657 max_year_representable = max_year; 658 } 659 660 static int 661 itsdir(name) 662 const char * const name; 663 { 664 register char * myname; 665 register int accres; 666 667 myname = ecpyalloc(name); 668 myname = ecatalloc(myname, "/."); 669 accres = access(myname, F_OK); 670 ifree(myname); 671 return accres == 0; 672 } 673 674 /* 675 ** Associate sets of rules with zones. 676 */ 677 678 /* 679 ** Sort by rule name. 680 */ 681 682 static int 683 rcomp(cp1, cp2) 684 const void * cp1; 685 const void * cp2; 686 { 687 return strcmp(((const struct rule *) cp1)->r_name, 688 ((const struct rule *) cp2)->r_name); 689 } 690 691 static void 692 associate P((void)) 693 { 694 register struct zone * zp; 695 register struct rule * rp; 696 register int base, out; 697 register int i, j; 698 699 if (nrules != 0) { 700 (void) qsort((void *) rules, (size_t) nrules, 701 (size_t) sizeof *rules, rcomp); 702 for (i = 0; i < nrules - 1; ++i) { 703 if (strcmp(rules[i].r_name, 704 rules[i + 1].r_name) != 0) 705 continue; 706 if (strcmp(rules[i].r_filename, 707 rules[i + 1].r_filename) == 0) 708 continue; 709 eat(rules[i].r_filename, rules[i].r_linenum); 710 warning(_("same rule name in multiple files")); 711 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); 712 warning(_("same rule name in multiple files")); 713 for (j = i + 2; j < nrules; ++j) { 714 if (strcmp(rules[i].r_name, 715 rules[j].r_name) != 0) 716 break; 717 if (strcmp(rules[i].r_filename, 718 rules[j].r_filename) == 0) 719 continue; 720 if (strcmp(rules[i + 1].r_filename, 721 rules[j].r_filename) == 0) 722 continue; 723 break; 724 } 725 i = j - 1; 726 } 727 } 728 for (i = 0; i < nzones; ++i) { 729 zp = &zones[i]; 730 zp->z_rules = NULL; 731 zp->z_nrules = 0; 732 } 733 for (base = 0; base < nrules; base = out) { 734 rp = &rules[base]; 735 for (out = base + 1; out < nrules; ++out) 736 if (strcmp(rp->r_name, rules[out].r_name) != 0) 737 break; 738 for (i = 0; i < nzones; ++i) { 739 zp = &zones[i]; 740 if (strcmp(zp->z_rule, rp->r_name) != 0) 741 continue; 742 zp->z_rules = rp; 743 zp->z_nrules = out - base; 744 } 745 } 746 for (i = 0; i < nzones; ++i) { 747 zp = &zones[i]; 748 if (zp->z_nrules == 0) { 749 /* 750 ** Maybe we have a local standard time offset. 751 */ 752 eat(zp->z_filename, zp->z_linenum); 753 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), 754 TRUE); 755 /* 756 ** Note, though, that if there's no rule, 757 ** a '%s' in the format is a bad thing. 758 */ 759 if (strchr(zp->z_format, '%') != 0) 760 error(_("%s in ruleless zone")); 761 } 762 } 763 if (errors) 764 (void) exit(EXIT_FAILURE); 765 } 766 767 static void 768 infile(name) 769 const char * name; 770 { 771 register FILE * fp; 772 register char ** fields; 773 register char * cp; 774 register const struct lookup * lp; 775 register int nfields; 776 register int wantcont; 777 register int num; 778 char buf[BUFSIZ]; 779 780 if (strcmp(name, "-") == 0) { 781 name = _("standard input"); 782 fp = stdin; 783 } else if ((fp = fopen(name, "r")) == NULL) { 784 const char *e = strerror(errno); 785 786 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), 787 progname, name, e); 788 (void) exit(EXIT_FAILURE); 789 } 790 wantcont = FALSE; 791 for (num = 1; ; ++num) { 792 eat(name, num); 793 if (fgets(buf, (int) sizeof buf, fp) != buf) 794 break; 795 cp = strchr(buf, '\n'); 796 if (cp == NULL) { 797 error(_("line too long")); 798 (void) exit(EXIT_FAILURE); 799 } 800 *cp = '\0'; 801 fields = getfields(buf); 802 nfields = 0; 803 while (fields[nfields] != NULL) { 804 static char nada; 805 806 if (strcmp(fields[nfields], "-") == 0) 807 fields[nfields] = &nada; 808 ++nfields; 809 } 810 if (nfields == 0) { 811 /* nothing to do */ 812 } else if (wantcont) { 813 wantcont = inzcont(fields, nfields); 814 } else { 815 lp = byword(fields[0], line_codes); 816 if (lp == NULL) 817 error(_("input line of unknown type")); 818 else switch ((int) (lp->l_value)) { 819 case LC_RULE: 820 inrule(fields, nfields); 821 wantcont = FALSE; 822 break; 823 case LC_ZONE: 824 wantcont = inzone(fields, nfields); 825 break; 826 case LC_LINK: 827 inlink(fields, nfields); 828 wantcont = FALSE; 829 break; 830 case LC_LEAP: 831 if (name != leapsec) 832 (void) fprintf(stderr, 833 _("%s: Leap line in non leap seconds file %s\n"), 834 progname, name); 835 else inleap(fields, nfields); 836 wantcont = FALSE; 837 break; 838 default: /* "cannot happen" */ 839 (void) fprintf(stderr, 840 _("%s: panic: Invalid l_value %d\n"), 841 progname, lp->l_value); 842 (void) exit(EXIT_FAILURE); 843 } 844 } 845 ifree((char *) fields); 846 } 847 if (ferror(fp)) { 848 (void) fprintf(stderr, _("%s: Error reading %s\n"), 849 progname, filename); 850 (void) exit(EXIT_FAILURE); 851 } 852 if (fp != stdin && fclose(fp)) { 853 const char *e = strerror(errno); 854 855 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), 856 progname, filename, e); 857 (void) exit(EXIT_FAILURE); 858 } 859 if (wantcont) 860 error(_("expected continuation line not found")); 861 } 862 863 /* 864 ** Convert a string of one of the forms 865 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss 866 ** into a number of seconds. 867 ** A null string maps to zero. 868 ** Call error with errstring and return zero on errors. 869 */ 870 871 static long 872 gethms(string, errstring, signable) 873 const char * string; 874 const char * const errstring; 875 const int signable; 876 { 877 int hh, mm, ss, sign; 878 879 if (string == NULL || *string == '\0') 880 return 0; 881 if (!signable) 882 sign = 1; 883 else if (*string == '-') { 884 sign = -1; 885 ++string; 886 } else sign = 1; 887 if (sscanf(string, scheck(string, "%d"), &hh) == 1) 888 mm = ss = 0; 889 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) 890 ss = 0; 891 else if (sscanf(string, scheck(string, "%d:%d:%d"), 892 &hh, &mm, &ss) != 3) { 893 error(errstring); 894 return 0; 895 } 896 if (hh < 0 || hh >= HOURSPERDAY || 897 mm < 0 || mm >= MINSPERHOUR || 898 ss < 0 || ss > SECSPERMIN) { 899 error(errstring); 900 return 0; 901 } 902 return eitol(sign) * 903 (eitol(hh * MINSPERHOUR + mm) * 904 eitol(SECSPERMIN) + eitol(ss)); 905 } 906 907 static void 908 inrule(fields, nfields) 909 register char ** const fields; 910 const int nfields; 911 { 912 static struct rule r; 913 914 if (nfields != RULE_FIELDS) { 915 error(_("wrong number of fields on Rule line")); 916 return; 917 } 918 if (*fields[RF_NAME] == '\0') { 919 error(_("nameless rule")); 920 return; 921 } 922 r.r_filename = filename; 923 r.r_linenum = linenum; 924 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); 925 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], 926 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); 927 r.r_name = ecpyalloc(fields[RF_NAME]); 928 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); 929 rules = (struct rule *) (void *) erealloc((char *) rules, 930 (int) ((nrules + 1) * sizeof *rules)); 931 rules[nrules++] = r; 932 } 933 934 static int 935 inzone(fields, nfields) 936 register char ** const fields; 937 const int nfields; 938 { 939 register int i; 940 static char * buf; 941 942 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { 943 error(_("wrong number of fields on Zone line")); 944 return FALSE; 945 } 946 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { 947 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); 948 (void)sprintf(buf, /* XXX: sprintf is safe */ 949 _("\"Zone %s\" line and -l option are mutually exclusive"), 950 TZDEFAULT); 951 error(buf); 952 return FALSE; 953 } 954 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { 955 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); 956 (void)sprintf(buf, /* XXX: sprintf is safe */ 957 _("\"Zone %s\" line and -p option are mutually exclusive"), 958 TZDEFRULES); 959 error(buf); 960 return FALSE; 961 } 962 for (i = 0; i < nzones; ++i) 963 if (zones[i].z_name != NULL && 964 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { 965 buf = erealloc(buf, (int) (132 + 966 strlen(fields[ZF_NAME]) + 967 strlen(zones[i].z_filename))); 968 (void)sprintf(buf, /* XXX: sprintf is safe */ 969 _("duplicate zone name %s (file \"%s\", line %d)"), 970 fields[ZF_NAME], 971 zones[i].z_filename, 972 zones[i].z_linenum); 973 error(buf); 974 return FALSE; 975 } 976 return inzsub(fields, nfields, FALSE); 977 } 978 979 static int 980 inzcont(fields, nfields) 981 register char ** const fields; 982 const int nfields; 983 { 984 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { 985 error(_("wrong number of fields on Zone continuation line")); 986 return FALSE; 987 } 988 return inzsub(fields, nfields, TRUE); 989 } 990 991 static int 992 inzsub(fields, nfields, iscont) 993 register char ** const fields; 994 const int nfields; 995 const int iscont; 996 { 997 register char * cp; 998 static struct zone z; 999 register int i_gmtoff, i_rule, i_format; 1000 register int i_untilyear, i_untilmonth; 1001 register int i_untilday, i_untiltime; 1002 register int hasuntil; 1003 1004 if (iscont) { 1005 i_gmtoff = ZFC_GMTOFF; 1006 i_rule = ZFC_RULE; 1007 i_format = ZFC_FORMAT; 1008 i_untilyear = ZFC_TILYEAR; 1009 i_untilmonth = ZFC_TILMONTH; 1010 i_untilday = ZFC_TILDAY; 1011 i_untiltime = ZFC_TILTIME; 1012 z.z_name = NULL; 1013 } else { 1014 i_gmtoff = ZF_GMTOFF; 1015 i_rule = ZF_RULE; 1016 i_format = ZF_FORMAT; 1017 i_untilyear = ZF_TILYEAR; 1018 i_untilmonth = ZF_TILMONTH; 1019 i_untilday = ZF_TILDAY; 1020 i_untiltime = ZF_TILTIME; 1021 z.z_name = ecpyalloc(fields[ZF_NAME]); 1022 } 1023 z.z_filename = filename; 1024 z.z_linenum = linenum; 1025 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid GMT offset"), TRUE); 1026 if ((cp = strchr(fields[i_format], '%')) != 0) { 1027 if (*++cp != 's' || strchr(cp, '%') != 0) { 1028 error(_("invalid abbreviation format")); 1029 return FALSE; 1030 } 1031 } 1032 z.z_rule = ecpyalloc(fields[i_rule]); 1033 z.z_format = ecpyalloc(fields[i_format]); 1034 hasuntil = nfields > i_untilyear; 1035 if (hasuntil) { 1036 z.z_untilrule.r_filename = filename; 1037 z.z_untilrule.r_linenum = linenum; 1038 rulesub(&z.z_untilrule, 1039 fields[i_untilyear], 1040 "only", 1041 "", 1042 (nfields > i_untilmonth) ? 1043 fields[i_untilmonth] : "Jan", 1044 (nfields > i_untilday) ? fields[i_untilday] : "1", 1045 (nfields > i_untiltime) ? fields[i_untiltime] : "0"); 1046 z.z_untiltime = rpytime(&z.z_untilrule, 1047 z.z_untilrule.r_loyear); 1048 if (iscont && nzones > 0 && 1049 z.z_untiltime > min_time && 1050 z.z_untiltime < max_time && 1051 zones[nzones - 1].z_untiltime > min_time && 1052 zones[nzones - 1].z_untiltime < max_time && 1053 zones[nzones - 1].z_untiltime >= z.z_untiltime) { 1054 error(_("Zone continuation line end time is not after end time of previous line")); 1055 return FALSE; 1056 } 1057 } 1058 zones = (struct zone *) (void *) erealloc((char *) zones, 1059 (int) ((nzones + 1) * sizeof *zones)); 1060 zones[nzones++] = z; 1061 /* 1062 ** If there was an UNTIL field on this line, 1063 ** there's more information about the zone on the next line. 1064 */ 1065 return hasuntil; 1066 } 1067 1068 static void 1069 inleap(fields, nfields) 1070 register char ** const fields; 1071 const int nfields; 1072 { 1073 register const char * cp; 1074 register const struct lookup * lp; 1075 register int i, j; 1076 int year, month, day; 1077 long dayoff, tod; 1078 time_t t; 1079 1080 if (nfields != LEAP_FIELDS) { 1081 error(_("wrong number of fields on Leap line")); 1082 return; 1083 } 1084 dayoff = 0; 1085 cp = fields[LP_YEAR]; 1086 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { 1087 /* 1088 * Leapin' Lizards! 1089 */ 1090 error(_("invalid leaping year")); 1091 return; 1092 } 1093 j = EPOCH_YEAR; 1094 while (j != year) { 1095 if (year > j) { 1096 i = len_years[isleap(j)]; 1097 ++j; 1098 } else { 1099 --j; 1100 i = -len_years[isleap(j)]; 1101 } 1102 dayoff = oadd(dayoff, eitol(i)); 1103 } 1104 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { 1105 error(_("invalid month name")); 1106 return; 1107 } 1108 month = lp->l_value; 1109 j = TM_JANUARY; 1110 while (j != month) { 1111 i = len_months[isleap(year)][j]; 1112 dayoff = oadd(dayoff, eitol(i)); 1113 ++j; 1114 } 1115 cp = fields[LP_DAY]; 1116 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || 1117 day <= 0 || day > len_months[isleap(year)][month]) { 1118 error(_("invalid day of month")); 1119 return; 1120 } 1121 dayoff = oadd(dayoff, eitol(day - 1)); 1122 if (dayoff < 0 && !TYPE_SIGNED(time_t)) { 1123 error(_("time before zero")); 1124 return; 1125 } 1126 t = (time_t) dayoff * SECSPERDAY; 1127 /* 1128 ** Cheap overflow check. 1129 */ 1130 if (t / SECSPERDAY != dayoff) { 1131 error(_("time overflow")); 1132 return; 1133 } 1134 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1135 cp = fields[LP_CORR]; 1136 { 1137 register int positive; 1138 int count; 1139 1140 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1141 positive = FALSE; 1142 count = 1; 1143 } else if (strcmp(cp, "--") == 0) { 1144 positive = FALSE; 1145 count = 2; 1146 } else if (strcmp(cp, "+") == 0) { 1147 positive = TRUE; 1148 count = 1; 1149 } else if (strcmp(cp, "++") == 0) { 1150 positive = TRUE; 1151 count = 2; 1152 } else { 1153 error(_("illegal CORRECTION field on Leap line")); 1154 return; 1155 } 1156 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1157 error(_("illegal Rolling/Stationary field on Leap line")); 1158 return; 1159 } 1160 leapadd(tadd(t, tod), positive, lp->l_value, count); 1161 } 1162 } 1163 1164 static void 1165 inlink(fields, nfields) 1166 register char ** const fields; 1167 const int nfields; 1168 { 1169 struct link l; 1170 1171 if (nfields != LINK_FIELDS) { 1172 error(_("wrong number of fields on Link line")); 1173 return; 1174 } 1175 if (*fields[LF_FROM] == '\0') { 1176 error(_("blank FROM field on Link line")); 1177 return; 1178 } 1179 if (*fields[LF_TO] == '\0') { 1180 error(_("blank TO field on Link line")); 1181 return; 1182 } 1183 l.l_filename = filename; 1184 l.l_linenum = linenum; 1185 l.l_from = ecpyalloc(fields[LF_FROM]); 1186 l.l_to = ecpyalloc(fields[LF_TO]); 1187 links = (struct link *) (void *) erealloc((char *) links, 1188 (int) ((nlinks + 1) * sizeof *links)); 1189 links[nlinks++] = l; 1190 } 1191 1192 static void 1193 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1194 register struct rule * const rp; 1195 const char * const loyearp; 1196 const char * const hiyearp; 1197 const char * const typep; 1198 const char * const monthp; 1199 const char * const dayp; 1200 const char * const timep; 1201 { 1202 register const struct lookup * lp; 1203 register const char * cp; 1204 register char * dp; 1205 register char * ep; 1206 1207 if ((lp = byword(monthp, mon_names)) == NULL) { 1208 error(_("invalid month name")); 1209 return; 1210 } 1211 rp->r_month = lp->l_value; 1212 rp->r_todisstd = FALSE; 1213 rp->r_todisgmt = FALSE; 1214 dp = ecpyalloc(timep); 1215 if (*dp != '\0') { 1216 ep = dp + strlen(dp) - 1; 1217 switch (lowerit(*ep)) { 1218 case 's': /* Standard */ 1219 rp->r_todisstd = TRUE; 1220 rp->r_todisgmt = FALSE; 1221 *ep = '\0'; 1222 break; 1223 case 'w': /* Wall */ 1224 rp->r_todisstd = FALSE; 1225 rp->r_todisgmt = FALSE; 1226 *ep = '\0'; 1227 break; 1228 case 'g': /* Greenwich */ 1229 case 'u': /* Universal */ 1230 case 'z': /* Zulu */ 1231 rp->r_todisstd = TRUE; 1232 rp->r_todisgmt = TRUE; 1233 *ep = '\0'; 1234 break; 1235 } 1236 } 1237 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1238 ifree(dp); 1239 /* 1240 ** Year work. 1241 */ 1242 cp = loyearp; 1243 lp = byword(cp, begin_years); 1244 if (lp != NULL) switch ((int) lp->l_value) { 1245 case YR_MINIMUM: 1246 rp->r_loyear = INT_MIN; 1247 break; 1248 case YR_MAXIMUM: 1249 rp->r_loyear = INT_MAX; 1250 break; 1251 default: /* "cannot happen" */ 1252 (void) fprintf(stderr, 1253 _("%s: panic: Invalid l_value %d\n"), 1254 progname, lp->l_value); 1255 (void) exit(EXIT_FAILURE); 1256 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { 1257 error(_("invalid starting year")); 1258 return; 1259 } else if (noise) 1260 if (rp->r_loyear < min_year_representable) 1261 warning(_("starting year too low to be represented")); 1262 else if (rp->r_loyear > max_year_representable) 1263 warning(_("starting year too high to be represented")); 1264 cp = hiyearp; 1265 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1266 case YR_MINIMUM: 1267 rp->r_hiyear = INT_MIN; 1268 break; 1269 case YR_MAXIMUM: 1270 rp->r_hiyear = INT_MAX; 1271 break; 1272 case YR_ONLY: 1273 rp->r_hiyear = rp->r_loyear; 1274 break; 1275 default: /* "cannot happen" */ 1276 (void) fprintf(stderr, 1277 _("%s: panic: Invalid l_value %d\n"), 1278 progname, lp->l_value); 1279 (void) exit(EXIT_FAILURE); 1280 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1281 error(_("invalid ending year")); 1282 return; 1283 } else if (noise) 1284 if (rp->r_loyear < min_year_representable) 1285 warning(_("starting year too low to be represented")); 1286 else if (rp->r_loyear > max_year_representable) 1287 warning(_("starting year too high to be represented")); 1288 if (rp->r_loyear > rp->r_hiyear) { 1289 error(_("starting year greater than ending year")); 1290 return; 1291 } 1292 if (*typep == '\0') 1293 rp->r_yrtype = NULL; 1294 else { 1295 if (rp->r_loyear == rp->r_hiyear) { 1296 error(_("typed single year")); 1297 return; 1298 } 1299 rp->r_yrtype = ecpyalloc(typep); 1300 } 1301 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1302 min_year = rp->r_loyear; 1303 /* 1304 ** Day work. 1305 ** Accept things such as: 1306 ** 1 1307 ** last-Sunday 1308 ** Sun<=20 1309 ** Sun>=7 1310 */ 1311 dp = ecpyalloc(dayp); 1312 if ((lp = byword(dp, lasts)) != NULL) { 1313 rp->r_dycode = DC_DOWLEQ; 1314 rp->r_wday = lp->l_value; 1315 rp->r_dayofmonth = len_months[1][rp->r_month]; 1316 } else { 1317 if ((ep = strchr(dp, '<')) != 0) 1318 rp->r_dycode = DC_DOWLEQ; 1319 else if ((ep = strchr(dp, '>')) != 0) 1320 rp->r_dycode = DC_DOWGEQ; 1321 else { 1322 ep = dp; 1323 rp->r_dycode = DC_DOM; 1324 } 1325 if (rp->r_dycode != DC_DOM) { 1326 *ep++ = 0; 1327 if (*ep++ != '=') { 1328 error(_("invalid day of month")); 1329 ifree(dp); 1330 return; 1331 } 1332 if ((lp = byword(dp, wday_names)) == NULL) { 1333 error(_("invalid weekday name")); 1334 ifree(dp); 1335 return; 1336 } 1337 rp->r_wday = lp->l_value; 1338 } 1339 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1340 rp->r_dayofmonth <= 0 || 1341 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1342 error(_("invalid day of month")); 1343 ifree(dp); 1344 return; 1345 } 1346 } 1347 ifree(dp); 1348 } 1349 1350 static void 1351 convert(val, buf) 1352 const long val; 1353 char * const buf; 1354 { 1355 register int i; 1356 register long shift; 1357 1358 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1359 buf[i] = val >> shift; 1360 } 1361 1362 static void 1363 puttzcode(val, fp) 1364 const long val; 1365 FILE * const fp; 1366 { 1367 char buf[4]; 1368 1369 convert(val, buf); 1370 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1371 } 1372 1373 static int 1374 atcomp(avp, bvp) 1375 void * avp; 1376 void * bvp; 1377 { 1378 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) 1379 return -1; 1380 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) 1381 return 1; 1382 else return 0; 1383 } 1384 1385 static void 1386 writezone(name) 1387 const char * const name; 1388 { 1389 register FILE * fp; 1390 register int i, j; 1391 static char * fullname; 1392 static struct tzhead tzh; 1393 time_t ats[TZ_MAX_TIMES]; 1394 unsigned char types[TZ_MAX_TIMES]; 1395 1396 /* 1397 ** Sort. 1398 */ 1399 if (timecnt > 1) 1400 (void) qsort((void *) attypes, (size_t) timecnt, 1401 (size_t) sizeof *attypes, atcomp); 1402 /* 1403 ** Optimize. 1404 */ 1405 { 1406 int fromi; 1407 int toi; 1408 1409 toi = 0; 1410 fromi = 0; 1411 while (fromi < timecnt && attypes[fromi].at < min_time) 1412 ++fromi; 1413 if (isdsts[0] == 0) 1414 while (fromi < timecnt && attypes[fromi].type == 0) 1415 ++fromi; /* handled by default rule */ 1416 for ( ; fromi < timecnt; ++fromi) { 1417 if (toi != 0 1418 && ((attypes[fromi].at 1419 + gmtoffs[attypes[toi - 1].type]) 1420 <= (attypes[toi - 1].at 1421 + gmtoffs[toi == 1 ? 0 1422 : attypes[toi - 2].type]))) { 1423 attypes[toi - 1].type = attypes[fromi].type; 1424 continue; 1425 } 1426 if (toi == 0 || 1427 attypes[toi - 1].type != attypes[fromi].type) 1428 attypes[toi++] = attypes[fromi]; 1429 } 1430 timecnt = toi; 1431 } 1432 /* 1433 ** Transfer. 1434 */ 1435 for (i = 0; i < timecnt; ++i) { 1436 ats[i] = attypes[i].at; 1437 types[i] = attypes[i].type; 1438 } 1439 fullname = erealloc(fullname, 1440 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1441 (void) sprintf(fullname, "%s/%s", directory, name); /* XXX: sprintf is safe */ 1442 /* 1443 ** Remove old file, if any, to snap links. 1444 */ 1445 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { 1446 const char *e = strerror(errno); 1447 1448 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), 1449 progname, fullname, e); 1450 (void) exit(EXIT_FAILURE); 1451 } 1452 if ((fp = fopen(fullname, "wb")) == NULL) { 1453 if (mkdirs(fullname) != 0) 1454 (void) exit(EXIT_FAILURE); 1455 if ((fp = fopen(fullname, "wb")) == NULL) { 1456 const char *e = strerror(errno); 1457 1458 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), 1459 progname, fullname, e); 1460 (void) exit(EXIT_FAILURE); 1461 } 1462 } 1463 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1464 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1465 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1466 convert(eitol(timecnt), tzh.tzh_timecnt); 1467 convert(eitol(typecnt), tzh.tzh_typecnt); 1468 convert(eitol(charcnt), tzh.tzh_charcnt); 1469 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1470 DO(tzh_reserved); 1471 DO(tzh_ttisgmtcnt); 1472 DO(tzh_ttisstdcnt); 1473 DO(tzh_leapcnt); 1474 DO(tzh_timecnt); 1475 DO(tzh_typecnt); 1476 DO(tzh_charcnt); 1477 #undef DO 1478 for (i = 0; i < timecnt; ++i) { 1479 j = leapcnt; 1480 while (--j >= 0) 1481 if (ats[i] >= trans[j]) { 1482 ats[i] = tadd(ats[i], corr[j]); 1483 break; 1484 } 1485 puttzcode((long) ats[i], fp); 1486 } 1487 if (timecnt > 0) 1488 (void) fwrite((void *) types, (size_t) sizeof types[0], 1489 (size_t) timecnt, fp); 1490 for (i = 0; i < typecnt; ++i) { 1491 puttzcode((long) gmtoffs[i], fp); 1492 (void) putc(isdsts[i], fp); 1493 (void) putc(abbrinds[i], fp); 1494 } 1495 if (charcnt != 0) 1496 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1497 (size_t) charcnt, fp); 1498 for (i = 0; i < leapcnt; ++i) { 1499 if (roll[i]) { 1500 if (timecnt == 0 || trans[i] < ats[0]) { 1501 j = 0; 1502 while (isdsts[j]) 1503 if (++j >= typecnt) { 1504 j = 0; 1505 break; 1506 } 1507 } else { 1508 j = 1; 1509 while (j < timecnt && trans[i] >= ats[j]) 1510 ++j; 1511 j = types[j - 1]; 1512 } 1513 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1514 } else puttzcode((long) trans[i], fp); 1515 puttzcode((long) corr[i], fp); 1516 } 1517 for (i = 0; i < typecnt; ++i) 1518 (void) putc(ttisstds[i], fp); 1519 for (i = 0; i < typecnt; ++i) 1520 (void) putc(ttisgmts[i], fp); 1521 if (ferror(fp) || fclose(fp)) { 1522 (void) fprintf(stderr, _("%s: Error writing %s\n"), 1523 progname, fullname); 1524 (void) exit(EXIT_FAILURE); 1525 } 1526 } 1527 1528 static void 1529 doabbr(abbr, abbrlen, format, letters, isdst) 1530 char * const abbr; 1531 const int abbrlen; 1532 const char * const format; 1533 const char * const letters; 1534 const int isdst; 1535 { 1536 if (strchr(format, '/') == NULL) { 1537 if (letters == NULL) 1538 (void)strncpy(abbr, format, abbrlen - 1); 1539 else 1540 (void)snprintf(abbr, abbrlen, format, letters); 1541 } else if (isdst) 1542 (void)strncpy(abbr, strchr(format, '/') + 1, abbrlen - 1); 1543 else { 1544 (void)strncpy(abbr, format, abbrlen - 1); 1545 *strchr(abbr, '/') = '\0'; 1546 } 1547 } 1548 1549 static void 1550 outzone(zpfirst, zonecount) 1551 const struct zone * const zpfirst; 1552 const int zonecount; 1553 { 1554 register const struct zone * zp; 1555 register struct rule * rp; 1556 register int i, j; 1557 register int usestart, useuntil; 1558 register time_t starttime, untiltime; 1559 register long gmtoff; 1560 register long stdoff; 1561 register int year; 1562 register long startoff; 1563 register int startttisstd; 1564 register int startttisgmt; 1565 register int type; 1566 char startbuf[BUFSIZ]; 1567 1568 INITIALIZE(untiltime); 1569 INITIALIZE(starttime); 1570 /* 1571 ** Now. . .finally. . .generate some useful data! 1572 */ 1573 timecnt = 0; 1574 typecnt = 0; 1575 charcnt = 0; 1576 /* 1577 ** A guess that may well be corrected later. 1578 */ 1579 stdoff = 0; 1580 /* 1581 ** Thanks to Earl Chew (earl (at) dnd.icp.nec.com.au) 1582 ** for noting the need to unconditionally initialize startttisstd. 1583 */ 1584 startttisstd = FALSE; 1585 startttisgmt = FALSE; 1586 for (i = 0; i < zonecount; ++i) { 1587 zp = &zpfirst[i]; 1588 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1589 useuntil = i < (zonecount - 1); 1590 if (useuntil && zp->z_untiltime <= min_time) 1591 continue; 1592 gmtoff = zp->z_gmtoff; 1593 eat(zp->z_filename, zp->z_linenum); 1594 *startbuf = '\0'; 1595 startoff = zp->z_gmtoff; 1596 if (zp->z_nrules == 0) { 1597 stdoff = zp->z_stdoff; 1598 doabbr(startbuf, sizeof startbuf, zp->z_format, 1599 (char *) NULL, stdoff != 0); 1600 type = addtype(oadd(zp->z_gmtoff, stdoff), 1601 startbuf, stdoff != 0, startttisstd, 1602 startttisgmt); 1603 if (usestart) { 1604 addtt(starttime, type); 1605 usestart = FALSE; 1606 } 1607 else if (stdoff != 0) 1608 addtt(min_time, type); 1609 } else for (year = min_year; year <= max_year; ++year) { 1610 if (useuntil && year > zp->z_untilrule.r_hiyear) 1611 break; 1612 /* 1613 ** Mark which rules to do in the current year. 1614 ** For those to do, calculate rpytime(rp, year); 1615 */ 1616 for (j = 0; j < zp->z_nrules; ++j) { 1617 rp = &zp->z_rules[j]; 1618 eats(zp->z_filename, zp->z_linenum, 1619 rp->r_filename, rp->r_linenum); 1620 rp->r_todo = year >= rp->r_loyear && 1621 year <= rp->r_hiyear && 1622 yearistype(year, rp->r_yrtype); 1623 if (rp->r_todo) 1624 rp->r_temp = rpytime(rp, year); 1625 } 1626 for ( ; ; ) { 1627 register int k; 1628 register time_t jtime, ktime; 1629 register long offset; 1630 char buf[BUFSIZ]; 1631 1632 INITIALIZE(ktime); 1633 if (useuntil) { 1634 /* 1635 ** Turn untiltime into GMT 1636 ** assuming the current gmtoff and 1637 ** stdoff values. 1638 */ 1639 untiltime = zp->z_untiltime; 1640 if (!zp->z_untilrule.r_todisgmt) 1641 untiltime = tadd(untiltime, 1642 -gmtoff); 1643 if (!zp->z_untilrule.r_todisstd) 1644 untiltime = tadd(untiltime, 1645 -stdoff); 1646 } 1647 /* 1648 ** Find the rule (of those to do, if any) 1649 ** that takes effect earliest in the year. 1650 */ 1651 k = -1; 1652 for (j = 0; j < zp->z_nrules; ++j) { 1653 rp = &zp->z_rules[j]; 1654 if (!rp->r_todo) 1655 continue; 1656 eats(zp->z_filename, zp->z_linenum, 1657 rp->r_filename, rp->r_linenum); 1658 offset = rp->r_todisgmt ? 0 : gmtoff; 1659 if (!rp->r_todisstd) 1660 offset = oadd(offset, stdoff); 1661 jtime = rp->r_temp; 1662 if (jtime == min_time || 1663 jtime == max_time) 1664 continue; 1665 jtime = tadd(jtime, -offset); 1666 if (k < 0 || jtime < ktime) { 1667 k = j; 1668 ktime = jtime; 1669 } 1670 } 1671 if (k < 0) 1672 break; /* go on to next year */ 1673 rp = &zp->z_rules[k]; 1674 rp->r_todo = FALSE; 1675 if (useuntil && ktime >= untiltime) 1676 break; 1677 stdoff = rp->r_stdoff; 1678 if (usestart && ktime == starttime) 1679 usestart = FALSE; 1680 if (usestart) { 1681 if (ktime < starttime) { 1682 startoff = oadd(zp->z_gmtoff, 1683 stdoff); 1684 doabbr(startbuf,sizeof startbuf, 1685 zp->z_format, 1686 rp->r_abbrvar, 1687 rp->r_stdoff != 0); 1688 continue; 1689 } 1690 if (*startbuf == '\0' && 1691 startoff == oadd(zp->z_gmtoff, 1692 stdoff)) { 1693 doabbr(startbuf,sizeof startbuf, 1694 zp->z_format, 1695 rp->r_abbrvar, 1696 rp->r_stdoff != 0); 1697 } 1698 } 1699 eats(zp->z_filename, zp->z_linenum, 1700 rp->r_filename, rp->r_linenum); 1701 doabbr(buf, sizeof buf, zp->z_format, 1702 rp->r_abbrvar, rp->r_stdoff != 0); 1703 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1704 type = addtype(offset, buf, rp->r_stdoff != 0, 1705 rp->r_todisstd, rp->r_todisgmt); 1706 addtt(ktime, type); 1707 } 1708 } 1709 if (usestart) { 1710 if (*startbuf == '\0' && 1711 zp->z_format != NULL && 1712 strchr(zp->z_format, '%') == NULL && 1713 strchr(zp->z_format, '/') == NULL) 1714 (void)strncpy(startbuf, zp->z_format, 1715 sizeof(startbuf) - 1); 1716 eat(zp->z_filename, zp->z_linenum); 1717 if (*startbuf == '\0') 1718 error(_("can't determine time zone abbreviation to use just after until time")); 1719 else addtt(starttime, 1720 addtype(startoff, startbuf, 1721 startoff != zp->z_gmtoff, 1722 startttisstd, 1723 startttisgmt)); 1724 } 1725 /* 1726 ** Now we may get to set starttime for the next zone line. 1727 */ 1728 if (useuntil) { 1729 startttisstd = zp->z_untilrule.r_todisstd; 1730 startttisgmt = zp->z_untilrule.r_todisgmt; 1731 starttime = zp->z_untiltime; 1732 if (!startttisstd) 1733 starttime = tadd(starttime, -stdoff); 1734 if (!startttisgmt) 1735 starttime = tadd(starttime, -gmtoff); 1736 } 1737 } 1738 writezone(zpfirst->z_name); 1739 } 1740 1741 static void 1742 addtt(starttime, type) 1743 const time_t starttime; 1744 int type; 1745 { 1746 if (starttime <= min_time || 1747 (timecnt == 1 && attypes[0].at < min_time)) { 1748 gmtoffs[0] = gmtoffs[type]; 1749 isdsts[0] = isdsts[type]; 1750 ttisstds[0] = ttisstds[type]; 1751 ttisgmts[0] = ttisgmts[type]; 1752 if (abbrinds[type] != 0) 1753 (void) strcpy(chars, &chars[abbrinds[type]]); 1754 abbrinds[0] = 0; 1755 charcnt = strlen(chars) + 1; 1756 typecnt = 1; 1757 timecnt = 0; 1758 type = 0; 1759 } 1760 if (timecnt >= TZ_MAX_TIMES) { 1761 error(_("too many transitions?!")); 1762 (void) exit(EXIT_FAILURE); 1763 } 1764 attypes[timecnt].at = starttime; 1765 attypes[timecnt].type = type; 1766 ++timecnt; 1767 } 1768 1769 static int 1770 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1771 const long gmtoff; 1772 const char * const abbr; 1773 const int isdst; 1774 const int ttisstd; 1775 const int ttisgmt; 1776 { 1777 register int i, j; 1778 1779 if (isdst != TRUE && isdst != FALSE) { 1780 error(_("internal error - addtype called with bad isdst")); 1781 (void) exit(EXIT_FAILURE); 1782 } 1783 if (ttisstd != TRUE && ttisstd != FALSE) { 1784 error(_("internal error - addtype called with bad ttisstd")); 1785 (void) exit(EXIT_FAILURE); 1786 } 1787 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1788 error(_("internal error - addtype called with bad ttisgmt")); 1789 (void) exit(EXIT_FAILURE); 1790 } 1791 /* 1792 ** See if there's already an entry for this zone type. 1793 ** If so, just return its index. 1794 */ 1795 for (i = 0; i < typecnt; ++i) { 1796 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1797 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1798 ttisstd == ttisstds[i] && 1799 ttisgmt == ttisgmts[i]) 1800 return i; 1801 } 1802 /* 1803 ** There isn't one; add a new one, unless there are already too 1804 ** many. 1805 */ 1806 if (typecnt >= TZ_MAX_TYPES) { 1807 error(_("too many local time types")); 1808 (void) exit(EXIT_FAILURE); 1809 } 1810 gmtoffs[i] = gmtoff; 1811 isdsts[i] = isdst; 1812 ttisstds[i] = ttisstd; 1813 ttisgmts[i] = ttisgmt; 1814 1815 for (j = 0; j < charcnt; ++j) 1816 if (strcmp(&chars[j], abbr) == 0) 1817 break; 1818 if (j == charcnt) 1819 newabbr(abbr); 1820 abbrinds[i] = j; 1821 ++typecnt; 1822 return i; 1823 } 1824 1825 static void 1826 leapadd(t, positive, rolling, count) 1827 const time_t t; 1828 const int positive; 1829 const int rolling; 1830 int count; 1831 { 1832 register int i, j; 1833 1834 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1835 error(_("too many leap seconds")); 1836 (void) exit(EXIT_FAILURE); 1837 } 1838 for (i = 0; i < leapcnt; ++i) 1839 if (t <= trans[i]) { 1840 if (t == trans[i]) { 1841 error(_("repeated leap second moment")); 1842 (void) exit(EXIT_FAILURE); 1843 } 1844 break; 1845 } 1846 do { 1847 for (j = leapcnt; j > i; --j) { 1848 trans[j] = trans[j - 1]; 1849 corr[j] = corr[j - 1]; 1850 roll[j] = roll[j - 1]; 1851 } 1852 trans[i] = t; 1853 corr[i] = positive ? 1L : eitol(-count); 1854 roll[i] = rolling; 1855 ++leapcnt; 1856 } while (positive && --count != 0); 1857 } 1858 1859 static void 1860 adjleap P((void)) 1861 { 1862 register int i; 1863 register long last = 0; 1864 1865 /* 1866 ** propagate leap seconds forward 1867 */ 1868 for (i = 0; i < leapcnt; ++i) { 1869 trans[i] = tadd(trans[i], last); 1870 last = corr[i] += last; 1871 } 1872 } 1873 1874 static int 1875 yearistype(year, type) 1876 const int year; 1877 const char * const type; 1878 { 1879 static char * buf; 1880 int result; 1881 1882 if (type == NULL || *type == '\0') 1883 return TRUE; 1884 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1885 (void)sprintf(buf, "%s %d %s", yitcommand, year, type); /* XXX: sprintf is safe */ 1886 result = system(buf); 1887 if (result == 0) 1888 return TRUE; 1889 if (result == (1 << 8)) 1890 return FALSE; 1891 error(_("Wild result from command execution")); 1892 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), 1893 progname, buf, result); 1894 for ( ; ; ) 1895 (void) exit(EXIT_FAILURE); 1896 } 1897 1898 static int 1899 lowerit(a) 1900 int a; 1901 { 1902 a = (unsigned char) a; 1903 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1904 } 1905 1906 static int 1907 ciequal(ap, bp) /* case-insensitive equality */ 1908 register const char * ap; 1909 register const char * bp; 1910 { 1911 while (lowerit(*ap) == lowerit(*bp++)) 1912 if (*ap++ == '\0') 1913 return TRUE; 1914 return FALSE; 1915 } 1916 1917 static int 1918 itsabbr(abbr, word) 1919 register const char * abbr; 1920 register const char * word; 1921 { 1922 if (lowerit(*abbr) != lowerit(*word)) 1923 return FALSE; 1924 ++word; 1925 while (*++abbr != '\0') 1926 do { 1927 if (*word == '\0') 1928 return FALSE; 1929 } while (lowerit(*word++) != lowerit(*abbr)); 1930 return TRUE; 1931 } 1932 1933 static const struct lookup * 1934 byword(word, table) 1935 register const char * const word; 1936 register const struct lookup * const table; 1937 { 1938 register const struct lookup * foundlp; 1939 register const struct lookup * lp; 1940 1941 if (word == NULL || table == NULL) 1942 return NULL; 1943 /* 1944 ** Look for exact match. 1945 */ 1946 for (lp = table; lp->l_word != NULL; ++lp) 1947 if (ciequal(word, lp->l_word)) 1948 return lp; 1949 /* 1950 ** Look for inexact match. 1951 */ 1952 foundlp = NULL; 1953 for (lp = table; lp->l_word != NULL; ++lp) 1954 if (itsabbr(word, lp->l_word)) 1955 if (foundlp == NULL) 1956 foundlp = lp; 1957 else return NULL; /* multiple inexact matches */ 1958 return foundlp; 1959 } 1960 1961 static char ** 1962 getfields(cp) 1963 register char * cp; 1964 { 1965 register char * dp; 1966 register char ** array; 1967 register int nsubs; 1968 1969 if (cp == NULL) 1970 return NULL; 1971 array = (char **) (void *) 1972 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 1973 nsubs = 0; 1974 for ( ; ; ) { 1975 while (isascii(*cp) && isspace((unsigned char) *cp)) 1976 ++cp; 1977 if (*cp == '\0' || *cp == '#') 1978 break; 1979 array[nsubs++] = dp = cp; 1980 do { 1981 if ((*dp = *cp++) != '"') 1982 ++dp; 1983 else while ((*dp = *cp++) != '"') 1984 if (*dp != '\0') 1985 ++dp; 1986 else error(_("Odd number of quotation marks")); 1987 } while (*cp != '\0' && *cp != '#' && 1988 (!isascii(*cp) || !isspace((unsigned char) *cp))); 1989 if (isascii(*cp) && isspace((unsigned char) *cp)) 1990 ++cp; 1991 *dp = '\0'; 1992 } 1993 array[nsubs] = NULL; 1994 return array; 1995 } 1996 1997 static long 1998 oadd(t1, t2) 1999 const long t1; 2000 const long t2; 2001 { 2002 register long t; 2003 2004 t = t1 + t2; 2005 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2006 error(_("time overflow")); 2007 (void) exit(EXIT_FAILURE); 2008 } 2009 return t; 2010 } 2011 2012 static time_t 2013 tadd(t1, t2) 2014 const time_t t1; 2015 const long t2; 2016 { 2017 register time_t t; 2018 2019 if (t1 == max_time && t2 > 0) 2020 return max_time; 2021 if (t1 == min_time && t2 < 0) 2022 return min_time; 2023 t = t1 + t2; 2024 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2025 error(_("time overflow")); 2026 (void) exit(EXIT_FAILURE); 2027 } 2028 return t; 2029 } 2030 2031 /* 2032 ** Given a rule, and a year, compute the date - in seconds since January 1, 2033 ** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2034 */ 2035 2036 static time_t 2037 rpytime(rp, wantedy) 2038 register const struct rule * const rp; 2039 register const int wantedy; 2040 { 2041 register int y, m, i; 2042 register long dayoff; /* with a nod to Margaret O. */ 2043 register time_t t; 2044 2045 if (wantedy == INT_MIN) 2046 return min_time; 2047 if (wantedy == INT_MAX) 2048 return max_time; 2049 dayoff = 0; 2050 m = TM_JANUARY; 2051 y = EPOCH_YEAR; 2052 while (wantedy != y) { 2053 if (wantedy > y) { 2054 i = len_years[isleap(y)]; 2055 ++y; 2056 } else { 2057 --y; 2058 i = -len_years[isleap(y)]; 2059 } 2060 dayoff = oadd(dayoff, eitol(i)); 2061 } 2062 while (m != rp->r_month) { 2063 i = len_months[isleap(y)][m]; 2064 dayoff = oadd(dayoff, eitol(i)); 2065 ++m; 2066 } 2067 i = rp->r_dayofmonth; 2068 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2069 if (rp->r_dycode == DC_DOWLEQ) 2070 --i; 2071 else { 2072 error(_("use of 2/29 in non leap-year")); 2073 (void) exit(EXIT_FAILURE); 2074 } 2075 } 2076 --i; 2077 dayoff = oadd(dayoff, eitol(i)); 2078 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2079 register long wday; 2080 2081 #define LDAYSPERWEEK ((long) DAYSPERWEEK) 2082 wday = eitol(EPOCH_WDAY); 2083 /* 2084 ** Don't trust mod of negative numbers. 2085 */ 2086 if (dayoff >= 0) 2087 wday = (wday + dayoff) % LDAYSPERWEEK; 2088 else { 2089 wday -= ((-dayoff) % LDAYSPERWEEK); 2090 if (wday < 0) 2091 wday += LDAYSPERWEEK; 2092 } 2093 while (wday != eitol(rp->r_wday)) 2094 if (rp->r_dycode == DC_DOWGEQ) { 2095 dayoff = oadd(dayoff, (long) 1); 2096 if (++wday >= LDAYSPERWEEK) 2097 wday = 0; 2098 ++i; 2099 } else { 2100 dayoff = oadd(dayoff, (long) -1); 2101 if (--wday < 0) 2102 wday = LDAYSPERWEEK - 1; 2103 --i; 2104 } 2105 if (i < 0 || i >= len_months[isleap(y)][m]) { 2106 error(_("no day in month matches rule")); 2107 (void) exit(EXIT_FAILURE); 2108 } 2109 } 2110 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2111 return min_time; 2112 t = (time_t) dayoff * SECSPERDAY; 2113 /* 2114 ** Cheap overflow check. 2115 */ 2116 if (t / SECSPERDAY != dayoff) 2117 return (dayoff > 0) ? max_time : min_time; 2118 return tadd(t, rp->r_tod); 2119 } 2120 2121 static void 2122 newabbr(string) 2123 const char * const string; 2124 { 2125 register int i; 2126 2127 i = strlen(string) + 1; 2128 if (charcnt + i > TZ_MAX_CHARS) { 2129 error(_("too many, or too long, time zone abbreviations")); 2130 (void) exit(EXIT_FAILURE); 2131 } 2132 (void)strncpy(&chars[charcnt], string, sizeof(chars) - charcnt - 1); 2133 charcnt += eitol(i); 2134 } 2135 2136 static int 2137 mkdirs(argname) 2138 char * const argname; 2139 { 2140 register char * name; 2141 register char * cp; 2142 2143 if (argname == NULL || *argname == '\0') 2144 return 0; 2145 cp = name = ecpyalloc(argname); 2146 while ((cp = strchr(cp + 1, '/')) != 0) { 2147 *cp = '\0'; 2148 #ifndef unix 2149 /* 2150 ** DOS drive specifier? 2151 */ 2152 if (isalpha((unsigned char) name[0]) && 2153 name[1] == ':' && name[2] == '\0') { 2154 *cp = '/'; 2155 continue; 2156 } 2157 #endif /* !defined unix */ 2158 if (!itsdir(name)) { 2159 /* 2160 ** It doesn't seem to exist, so we try to create it. 2161 ** Creation may fail because of the directory being 2162 ** created by some other multiprocessor, so we get 2163 ** to do extra checking. 2164 */ 2165 if (mkdir(name, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) { 2166 const char *e = strerror(errno); 2167 2168 if (errno != EEXIST || !itsdir(name)) { 2169 (void) fprintf(stderr, 2170 _("%s: Can't create directory %s: %s\n"), 2171 progname, name, e); 2172 ifree(name); 2173 return -1; 2174 } 2175 } 2176 } 2177 *cp = '/'; 2178 } 2179 ifree(name); 2180 return 0; 2181 } 2182 2183 static long 2184 eitol(i) 2185 const int i; 2186 { 2187 long l; 2188 2189 l = i; 2190 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { 2191 (void) fprintf(stderr, 2192 _("%s: %d did not sign extend correctly\n"), 2193 progname, i); 2194 (void) exit(EXIT_FAILURE); 2195 } 2196 return l; 2197 } 2198 2199 /* 2200 ** UNIX was a registered trademark of UNIX System Laboratories in 1993. 2201 */ 2202
Indexes created Wed Sep 24 05:09:52 GMT 2025