1 /* $NetBSD: zic.c,v 1.10 1997/10/17 14:26:43 lukem Exp $ */ 2 3 #include <sys/cdefs.h> 4 #ifndef lint 5 #ifndef NOID 6 #if 0 7 static char elsieid[] = "@(#)zic.c 7.87"; 8 #else 9 __RCSID("$NetBSD: zic.c,v 1.10 1997/10/17 14:26:43 lukem Exp $"); 10 #endif 11 #endif /* !defined NOID */ 12 #endif /* !defined lint */ 13 14 #include "private.h" 15 #include "locale.h" 16 #include "tzfile.h" 17 #include "sys/stat.h" /* for umask manifest constants */ 18 19 /* 20 ** On some ancient hosts, predicates like `isspace(C)' are defined 21 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, 22 ** which says they are defined only if C == ((unsigned char) C) || C == EOF. 23 ** Neither the C Standard nor Posix require that `isascii' exist. 24 ** For portability, we check both ancient and modern requirements. 25 ** If isascii is not defined, the isascii check succeeds trivially. 26 */ 27 #include "ctype.h" 28 #ifndef isascii 29 #define isascii(x) 1 30 #endif 31 32 struct rule { 33 const char * r_filename; 34 int r_linenum; 35 const char * r_name; 36 37 int r_loyear; /* for example, 1986 */ 38 int r_hiyear; /* for example, 1986 */ 39 const char * r_yrtype; 40 41 int r_month; /* 0..11 */ 42 43 int r_dycode; /* see below */ 44 int r_dayofmonth; 45 int r_wday; 46 47 long r_tod; /* time from midnight */ 48 int r_todisstd; /* above is standard time if TRUE */ 49 /* or wall clock time if FALSE */ 50 int r_todisgmt; /* above is GMT if TRUE */ 51 /* or local time if FALSE */ 52 long r_stdoff; /* offset from standard time */ 53 const char * r_abbrvar; /* variable part of abbreviation */ 54 55 int r_todo; /* a rule to do (used in outzone) */ 56 time_t r_temp; /* used in outzone */ 57 }; 58 59 /* 60 ** r_dycode r_dayofmonth r_wday 61 */ 62 63 #define DC_DOM 0 /* 1..31 */ /* unused */ 64 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ 65 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ 66 67 struct zone { 68 const char * z_filename; 69 int z_linenum; 70 71 const char * z_name; 72 long z_gmtoff; 73 const char * z_rule; 74 const char * z_format; 75 76 long z_stdoff; 77 78 struct rule * z_rules; 79 int z_nrules; 80 81 struct rule z_untilrule; 82 time_t z_untiltime; 83 }; 84 85 extern int getopt P((int argc, char * const argv[], 86 const char * options)); 87 extern int link P((const char * fromname, const char * toname)); 88 extern char * optarg; 89 extern int optind; 90 91 static int atcomp P((const void *, const void *)); 92 static void addtt P((time_t starttime, int type)); 93 static int addtype P((long gmtoff, const char * abbr, int isdst, 94 int ttisstd, int ttisgmt)); 95 static void leapadd P((time_t t, int positive, int rolling, int count)); 96 static void adjleap P((void)); 97 static void associate P((void)); 98 static int ciequal P((const char * ap, const char * bp)); 99 static void convert P((long val, char * buf)); 100 static void dolink P((const char * fromfile, const char * tofile)); 101 static void doabbr P((char * abbr, int abbrlen, const char * format, 102 const char * letters, int isdst)); 103 static void eat P((const char * name, int num)); 104 static void eats P((const char * name, int num, 105 const char * rname, int rnum)); 106 static long eitol P((int i)); 107 static void error P((const char * message)); 108 static char ** getfields P((char * buf)); 109 static long gethms P((const char * string, const char * errstrng, 110 int signable)); 111 static void infile P((const char * filename)); 112 static void inleap P((char ** fields, int nfields)); 113 static void inlink P((char ** fields, int nfields)); 114 static void inrule P((char ** fields, int nfields)); 115 static int inzcont P((char ** fields, int nfields)); 116 static int inzone P((char ** fields, int nfields)); 117 static int inzsub P((char ** fields, int nfields, int iscont)); 118 static int itsabbr P((const char * abbr, const char * word)); 119 static int itsdir P((const char * name)); 120 static int lowerit P((int c)); 121 int main P((int, char **)); 122 static char * memcheck P((char * tocheck)); 123 static int mkdirs P((char * filename)); 124 static void newabbr P((const char * abbr)); 125 static long oadd P((long t1, long t2)); 126 static void outzone P((const struct zone * zp, int ntzones)); 127 static void puttzcode P((long code, FILE * fp)); 128 static int rcomp P((const void * leftp, const void * rightp)); 129 static time_t rpytime P((const struct rule * rp, int wantedy)); 130 static void rulesub P((struct rule * rp, 131 const char * loyearp, const char * hiyearp, 132 const char * typep, const char * monthp, 133 const char * dayp, const char * timep)); 134 static void setboundaries P((void)); 135 static time_t tadd P((time_t t1, long t2)); 136 static void usage P((void)); 137 static void warning P((const char * const)); 138 static void writezone P((const char * name)); 139 static int yearistype P((int year, const char * type)); 140 141 #if !(HAVE_STRERROR - 0) 142 static char * strerror P((int)); 143 #endif /* !(HAVE_STRERROR - 0) */ 144 145 static int charcnt; 146 static int errors; 147 static const char * filename; 148 static int leapcnt; 149 static int linenum; 150 static time_t max_time; 151 static int max_year; 152 static int max_year_representable; 153 static time_t min_time; 154 static int min_year; 155 static int min_year_representable; 156 static int noise; 157 static const char * rfilename; 158 static int rlinenum; 159 static const char * progname; 160 static int timecnt; 161 static int typecnt; 162 163 /* 164 ** Line codes. 165 */ 166 167 #define LC_RULE 0 168 #define LC_ZONE 1 169 #define LC_LINK 2 170 #define LC_LEAP 3 171 172 /* 173 ** Which fields are which on a Zone line. 174 */ 175 176 #define ZF_NAME 1 177 #define ZF_GMTOFF 2 178 #define ZF_RULE 3 179 #define ZF_FORMAT 4 180 #define ZF_TILYEAR 5 181 #define ZF_TILMONTH 6 182 #define ZF_TILDAY 7 183 #define ZF_TILTIME 8 184 #define ZONE_MINFIELDS 5 185 #define ZONE_MAXFIELDS 9 186 187 /* 188 ** Which fields are which on a Zone continuation line. 189 */ 190 191 #define ZFC_GMTOFF 0 192 #define ZFC_RULE 1 193 #define ZFC_FORMAT 2 194 #define ZFC_TILYEAR 3 195 #define ZFC_TILMONTH 4 196 #define ZFC_TILDAY 5 197 #define ZFC_TILTIME 6 198 #define ZONEC_MINFIELDS 3 199 #define ZONEC_MAXFIELDS 7 200 201 /* 202 ** Which files are which on a Rule line. 203 */ 204 205 #define RF_NAME 1 206 #define RF_LOYEAR 2 207 #define RF_HIYEAR 3 208 #define RF_COMMAND 4 209 #define RF_MONTH 5 210 #define RF_DAY 6 211 #define RF_TOD 7 212 #define RF_STDOFF 8 213 #define RF_ABBRVAR 9 214 #define RULE_FIELDS 10 215 216 /* 217 ** Which fields are which on a Link line. 218 */ 219 220 #define LF_FROM 1 221 #define LF_TO 2 222 #define LINK_FIELDS 3 223 224 /* 225 ** Which fields are which on a Leap line. 226 */ 227 228 #define LP_YEAR 1 229 #define LP_MONTH 2 230 #define LP_DAY 3 231 #define LP_TIME 4 232 #define LP_CORR 5 233 #define LP_ROLL 6 234 #define LEAP_FIELDS 7 235 236 /* 237 ** Year synonyms. 238 */ 239 240 #define YR_MINIMUM 0 241 #define YR_MAXIMUM 1 242 #define YR_ONLY 2 243 244 static struct rule * rules; 245 static int nrules; /* number of rules */ 246 247 static struct zone * zones; 248 static int nzones; /* number of zones */ 249 250 struct link { 251 const char * l_filename; 252 int l_linenum; 253 const char * l_from; 254 const char * l_to; 255 }; 256 257 static struct link * links; 258 static int nlinks; 259 260 struct lookup { 261 const char * l_word; 262 const int l_value; 263 }; 264 265 static struct lookup const * byword P((const char * string, 266 const struct lookup * lp)); 267 268 static struct lookup const line_codes[] = { 269 { "Rule", LC_RULE }, 270 { "Zone", LC_ZONE }, 271 { "Link", LC_LINK }, 272 { "Leap", LC_LEAP }, 273 { NULL, 0} 274 }; 275 276 static struct lookup const mon_names[] = { 277 { "January", TM_JANUARY }, 278 { "February", TM_FEBRUARY }, 279 { "March", TM_MARCH }, 280 { "April", TM_APRIL }, 281 { "May", TM_MAY }, 282 { "June", TM_JUNE }, 283 { "July", TM_JULY }, 284 { "August", TM_AUGUST }, 285 { "September", TM_SEPTEMBER }, 286 { "October", TM_OCTOBER }, 287 { "November", TM_NOVEMBER }, 288 { "December", TM_DECEMBER }, 289 { NULL, 0 } 290 }; 291 292 static struct lookup const wday_names[] = { 293 { "Sunday", TM_SUNDAY }, 294 { "Monday", TM_MONDAY }, 295 { "Tuesday", TM_TUESDAY }, 296 { "Wednesday", TM_WEDNESDAY }, 297 { "Thursday", TM_THURSDAY }, 298 { "Friday", TM_FRIDAY }, 299 { "Saturday", TM_SATURDAY }, 300 { NULL, 0 } 301 }; 302 303 static struct lookup const lasts[] = { 304 { "last-Sunday", TM_SUNDAY }, 305 { "last-Monday", TM_MONDAY }, 306 { "last-Tuesday", TM_TUESDAY }, 307 { "last-Wednesday", TM_WEDNESDAY }, 308 { "last-Thursday", TM_THURSDAY }, 309 { "last-Friday", TM_FRIDAY }, 310 { "last-Saturday", TM_SATURDAY }, 311 { NULL, 0 } 312 }; 313 314 static struct lookup const begin_years[] = { 315 { "minimum", YR_MINIMUM }, 316 { "maximum", YR_MAXIMUM }, 317 { NULL, 0 } 318 }; 319 320 static struct lookup const end_years[] = { 321 { "minimum", YR_MINIMUM }, 322 { "maximum", YR_MAXIMUM }, 323 { "only", YR_ONLY }, 324 { NULL, 0 } 325 }; 326 327 static struct lookup const leap_types[] = { 328 { "Rolling", TRUE }, 329 { "Stationary", FALSE }, 330 { NULL, 0 } 331 }; 332 333 static const int len_months[2][MONSPERYEAR] = { 334 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, 335 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } 336 }; 337 338 static const int len_years[2] = { 339 DAYSPERNYEAR, DAYSPERLYEAR 340 }; 341 342 static struct attype { 343 time_t at; 344 unsigned char type; 345 } attypes[TZ_MAX_TIMES]; 346 static long gmtoffs[TZ_MAX_TYPES]; 347 static char isdsts[TZ_MAX_TYPES]; 348 static unsigned char abbrinds[TZ_MAX_TYPES]; 349 static char ttisstds[TZ_MAX_TYPES]; 350 static char ttisgmts[TZ_MAX_TYPES]; 351 static char chars[TZ_MAX_CHARS]; 352 static time_t trans[TZ_MAX_LEAPS]; 353 static long corr[TZ_MAX_LEAPS]; 354 static char roll[TZ_MAX_LEAPS]; 355 356 /* 357 ** Memory allocation. 358 */ 359 360 static char * 361 memcheck(ptr) 362 char * const ptr; 363 { 364 if (ptr == NULL) { 365 const char *e = strerror(errno); 366 367 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"), 368 progname, e); 369 (void) exit(EXIT_FAILURE); 370 } 371 return ptr; 372 } 373 374 #define emalloc(size) memcheck(imalloc(size)) 375 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) 376 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) 377 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) 378 379 /* 380 ** Error handling. 381 */ 382 383 #if !(HAVE_STRERROR - 0) 384 static char * 385 strerror(errnum) 386 int errnum; 387 { 388 extern char * sys_errlist[]; 389 extern int sys_nerr; 390 391 return (errnum > 0 && errnum <= sys_nerr) ? 392 sys_errlist[errnum] : "Unknown system error"; 393 } 394 #endif /* !(HAVE_STRERROR - 0) */ 395 396 static void 397 eats(name, num, rname, rnum) 398 const char * const name; 399 const int num; 400 const char * const rname; 401 const int rnum; 402 { 403 filename = name; 404 linenum = num; 405 rfilename = rname; 406 rlinenum = rnum; 407 } 408 409 static void 410 eat(name, num) 411 const char * const name; 412 const int num; 413 { 414 eats(name, num, (char *) NULL, -1); 415 } 416 417 static void 418 error(string) 419 const char * const string; 420 { 421 /* 422 ** Match the format of "cc" to allow sh users to 423 ** zic ... 2>&1 | error -t "*" -v 424 ** on BSD systems. 425 */ 426 (void) fprintf(stderr, _("\"%s\", line %d: %s"), 427 filename, linenum, string); 428 if (rfilename != NULL) 429 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), 430 rfilename, rlinenum); 431 (void) fprintf(stderr, "\n"); 432 ++errors; 433 } 434 435 static void 436 warning(string) 437 const char * const string; 438 { 439 char * cp; 440 441 cp = ecpyalloc("warning: "); 442 cp = ecatalloc(cp, string); 443 error(cp); 444 ifree(cp); 445 --errors; 446 } 447 448 static void 449 usage P((void)) 450 { 451 (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), 452 progname, progname); 453 (void) exit(EXIT_FAILURE); 454 } 455 456 static const char * psxrules; 457 static const char * lcltime; 458 static const char * directory; 459 static const char * leapsec; 460 static const char * yitcommand; 461 static int sflag = FALSE; 462 463 int 464 main(argc, argv) 465 int argc; 466 char * argv[]; 467 { 468 register int i; 469 register int j; 470 register int c; 471 472 #ifdef unix 473 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); 474 #endif /* defined unix */ 475 #if HAVE_GETTEXT - 0 476 (void) setlocale(LC_MESSAGES, ""); 477 #ifdef TZ_DOMAINDIR 478 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); 479 #endif /* defined TEXTDOMAINDIR */ 480 (void) textdomain(TZ_DOMAIN); 481 #endif /* HAVE_GETTEXT - 0 */ 482 progname = argv[0]; 483 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) 484 switch (c) { 485 default: 486 usage(); 487 case 'd': 488 if (directory == NULL) 489 directory = optarg; 490 else { 491 (void) fprintf(stderr, 492 _("%s: More than one -d option specified\n"), 493 progname); 494 (void) exit(EXIT_FAILURE); 495 } 496 break; 497 case 'l': 498 if (lcltime == NULL) 499 lcltime = optarg; 500 else { 501 (void) fprintf(stderr, 502 _("%s: More than one -l option specified\n"), 503 progname); 504 (void) exit(EXIT_FAILURE); 505 } 506 break; 507 case 'p': 508 if (psxrules == NULL) 509 psxrules = optarg; 510 else { 511 (void) fprintf(stderr, 512 _("%s: More than one -p option specified\n"), 513 progname); 514 (void) exit(EXIT_FAILURE); 515 } 516 break; 517 case 'y': 518 if (yitcommand == NULL) 519 yitcommand = optarg; 520 else { 521 (void) fprintf(stderr, 522 _("%s: More than one -y option specified\n"), 523 progname); 524 (void) exit(EXIT_FAILURE); 525 } 526 break; 527 case 'L': 528 if (leapsec == NULL) 529 leapsec = optarg; 530 else { 531 (void) fprintf(stderr, 532 _("%s: More than one -L option specified\n"), 533 progname); 534 (void) exit(EXIT_FAILURE); 535 } 536 break; 537 case 'v': 538 noise = TRUE; 539 break; 540 case 's': 541 sflag = TRUE; 542 break; 543 } 544 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 545 usage(); /* usage message by request */ 546 if (directory == NULL) 547 directory = TZDIR; 548 if (yitcommand == NULL) 549 yitcommand = "yearistype"; 550 551 setboundaries(); 552 553 if (optind < argc && leapsec != NULL) { 554 infile(leapsec); 555 adjleap(); 556 } 557 558 for (i = optind; i < argc; ++i) 559 infile(argv[i]); 560 if (errors) 561 (void) exit(EXIT_FAILURE); 562 associate(); 563 for (i = 0; i < nzones; i = j) { 564 /* 565 ** Find the next non-continuation zone entry. 566 */ 567 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 568 continue; 569 outzone(&zones[i], j - i); 570 } 571 /* 572 ** Make links. 573 */ 574 for (i = 0; i < nlinks; ++i) 575 dolink(links[i].l_from, links[i].l_to); 576 if (lcltime != NULL) 577 dolink(lcltime, TZDEFAULT); 578 if (psxrules != NULL) 579 dolink(psxrules, TZDEFRULES); 580 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 581 } 582 583 static void 584 dolink(fromfile, tofile) 585 const char * const fromfile; 586 const char * const tofile; 587 { 588 register char * fromname; 589 register char * toname; 590 591 if (fromfile[0] == '/') 592 fromname = ecpyalloc(fromfile); 593 else { 594 fromname = ecpyalloc(directory); 595 fromname = ecatalloc(fromname, "/"); 596 fromname = ecatalloc(fromname, fromfile); 597 } 598 if (tofile[0] == '/') 599 toname = ecpyalloc(tofile); 600 else { 601 toname = ecpyalloc(directory); 602 toname = ecatalloc(toname, "/"); 603 toname = ecatalloc(toname, tofile); 604 } 605 /* 606 ** We get to be careful here since 607 ** there's a fair chance of root running us. 608 */ 609 if (!itsdir(toname)) 610 (void) remove(toname); 611 if (link(fromname, toname) != 0) { 612 if (mkdirs(toname) != 0) 613 (void) exit(EXIT_FAILURE); 614 if (link(fromname, toname) != 0) { 615 const char *e = strerror(errno); 616 617 (void) fprintf(stderr, 618 _("%s: Can't link from %s to %s: %s\n"), 619 progname, fromname, toname, e); 620 (void) exit(EXIT_FAILURE); 621 } 622 } 623 ifree(fromname); 624 ifree(toname); 625 } 626 627 #ifndef INT_MAX 628 #define INT_MAX ((int) (((unsigned)~0)>>1)) 629 #endif /* !defined INT_MAX */ 630 631 #ifndef INT_MIN 632 #define INT_MIN ((int) ~(((unsigned)~0)>>1)) 633 #endif /* !defined INT_MIN */ 634 635 /* 636 ** The tz file format currently allows at most 32-bit quantities. 637 ** This restriction should be removed before signed 32-bit values 638 ** wrap around in 2038, but unfortunately this will require a 639 ** change to the tz file format. 640 */ 641 642 #define MAX_BITS_IN_FILE 32 643 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) 644 645 static void 646 setboundaries P((void)) 647 { 648 if (TYPE_SIGNED(time_t)) { 649 min_time = ~ (time_t) 0; 650 min_time <<= TIME_T_BITS_IN_FILE - 1; 651 max_time = ~ (time_t) 0 - min_time; 652 if (sflag) 653 min_time = 0; 654 } else { 655 min_time = 0; 656 max_time = 2 - sflag; 657 max_time <<= TIME_T_BITS_IN_FILE - 1; 658 --max_time; 659 } 660 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; 661 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; 662 min_year_representable = min_year; 663 max_year_representable = max_year; 664 } 665 666 static int 667 itsdir(name) 668 const char * const name; 669 { 670 register char * myname; 671 register int accres; 672 673 myname = ecpyalloc(name); 674 myname = ecatalloc(myname, "/."); 675 accres = access(myname, F_OK); 676 ifree(myname); 677 return accres == 0; 678 } 679 680 /* 681 ** Associate sets of rules with zones. 682 */ 683 684 /* 685 ** Sort by rule name. 686 */ 687 688 static int 689 rcomp(cp1, cp2) 690 const void * cp1; 691 const void * cp2; 692 { 693 return strcmp(((const struct rule *) cp1)->r_name, 694 ((const struct rule *) cp2)->r_name); 695 } 696 697 static void 698 associate P((void)) 699 { 700 register struct zone * zp; 701 register struct rule * rp; 702 register int base, out; 703 register int i, j; 704 705 if (nrules != 0) { 706 (void) qsort((void *) rules, (size_t) nrules, 707 (size_t) sizeof *rules, rcomp); 708 for (i = 0; i < nrules - 1; ++i) { 709 if (strcmp(rules[i].r_name, 710 rules[i + 1].r_name) != 0) 711 continue; 712 if (strcmp(rules[i].r_filename, 713 rules[i + 1].r_filename) == 0) 714 continue; 715 eat(rules[i].r_filename, rules[i].r_linenum); 716 warning(_("same rule name in multiple files")); 717 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); 718 warning(_("same rule name in multiple files")); 719 for (j = i + 2; j < nrules; ++j) { 720 if (strcmp(rules[i].r_name, 721 rules[j].r_name) != 0) 722 break; 723 if (strcmp(rules[i].r_filename, 724 rules[j].r_filename) == 0) 725 continue; 726 if (strcmp(rules[i + 1].r_filename, 727 rules[j].r_filename) == 0) 728 continue; 729 break; 730 } 731 i = j - 1; 732 } 733 } 734 for (i = 0; i < nzones; ++i) { 735 zp = &zones[i]; 736 zp->z_rules = NULL; 737 zp->z_nrules = 0; 738 } 739 for (base = 0; base < nrules; base = out) { 740 rp = &rules[base]; 741 for (out = base + 1; out < nrules; ++out) 742 if (strcmp(rp->r_name, rules[out].r_name) != 0) 743 break; 744 for (i = 0; i < nzones; ++i) { 745 zp = &zones[i]; 746 if (strcmp(zp->z_rule, rp->r_name) != 0) 747 continue; 748 zp->z_rules = rp; 749 zp->z_nrules = out - base; 750 } 751 } 752 for (i = 0; i < nzones; ++i) { 753 zp = &zones[i]; 754 if (zp->z_nrules == 0) { 755 /* 756 ** Maybe we have a local standard time offset. 757 */ 758 eat(zp->z_filename, zp->z_linenum); 759 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), 760 TRUE); 761 /* 762 ** Note, though, that if there's no rule, 763 ** a '%s' in the format is a bad thing. 764 */ 765 if (strchr(zp->z_format, '%') != 0) 766 error(_("%s in ruleless zone")); 767 } 768 } 769 if (errors) 770 (void) exit(EXIT_FAILURE); 771 } 772 773 static void 774 infile(name) 775 const char * name; 776 { 777 register FILE * fp; 778 register char ** fields; 779 register char * cp; 780 register const struct lookup * lp; 781 register int nfields; 782 register int wantcont; 783 register int num; 784 char buf[BUFSIZ]; 785 786 if (strcmp(name, "-") == 0) { 787 name = _("standard input"); 788 fp = stdin; 789 } else if ((fp = fopen(name, "r")) == NULL) { 790 const char *e = strerror(errno); 791 792 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), 793 progname, name, e); 794 (void) exit(EXIT_FAILURE); 795 } 796 wantcont = FALSE; 797 for (num = 1; ; ++num) { 798 eat(name, num); 799 if (fgets(buf, (int) sizeof buf, fp) != buf) 800 break; 801 cp = strchr(buf, '\n'); 802 if (cp == NULL) { 803 error(_("line too long")); 804 (void) exit(EXIT_FAILURE); 805 } 806 *cp = '\0'; 807 fields = getfields(buf); 808 nfields = 0; 809 while (fields[nfields] != NULL) { 810 static char nada; 811 812 if (strcmp(fields[nfields], "-") == 0) 813 fields[nfields] = &nada; 814 ++nfields; 815 } 816 if (nfields == 0) { 817 /* nothing to do */ 818 } else if (wantcont) { 819 wantcont = inzcont(fields, nfields); 820 } else { 821 lp = byword(fields[0], line_codes); 822 if (lp == NULL) 823 error(_("input line of unknown type")); 824 else switch ((int) (lp->l_value)) { 825 case LC_RULE: 826 inrule(fields, nfields); 827 wantcont = FALSE; 828 break; 829 case LC_ZONE: 830 wantcont = inzone(fields, nfields); 831 break; 832 case LC_LINK: 833 inlink(fields, nfields); 834 wantcont = FALSE; 835 break; 836 case LC_LEAP: 837 if (name != leapsec) 838 (void) fprintf(stderr, 839 _("%s: Leap line in non leap seconds file %s\n"), 840 progname, name); 841 else inleap(fields, nfields); 842 wantcont = FALSE; 843 break; 844 default: /* "cannot happen" */ 845 (void) fprintf(stderr, 846 _("%s: panic: Invalid l_value %d\n"), 847 progname, lp->l_value); 848 (void) exit(EXIT_FAILURE); 849 } 850 } 851 ifree((char *) fields); 852 } 853 if (ferror(fp)) { 854 (void) fprintf(stderr, _("%s: Error reading %s\n"), 855 progname, filename); 856 (void) exit(EXIT_FAILURE); 857 } 858 if (fp != stdin && fclose(fp)) { 859 const char *e = strerror(errno); 860 861 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), 862 progname, filename, e); 863 (void) exit(EXIT_FAILURE); 864 } 865 if (wantcont) 866 error(_("expected continuation line not found")); 867 } 868 869 /* 870 ** Convert a string of one of the forms 871 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss 872 ** into a number of seconds. 873 ** A null string maps to zero. 874 ** Call error with errstring and return zero on errors. 875 */ 876 877 static long 878 gethms(string, errstring, signable) 879 const char * string; 880 const char * const errstring; 881 const int signable; 882 { 883 int hh, mm, ss, sign; 884 885 if (string == NULL || *string == '\0') 886 return 0; 887 if (!signable) 888 sign = 1; 889 else if (*string == '-') { 890 sign = -1; 891 ++string; 892 } else sign = 1; 893 if (sscanf(string, scheck(string, "%d"), &hh) == 1) 894 mm = ss = 0; 895 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) 896 ss = 0; 897 else if (sscanf(string, scheck(string, "%d:%d:%d"), 898 &hh, &mm, &ss) != 3) { 899 error(errstring); 900 return 0; 901 } 902 if (hh < 0 || hh >= HOURSPERDAY || 903 mm < 0 || mm >= MINSPERHOUR || 904 ss < 0 || ss > SECSPERMIN) { 905 error(errstring); 906 return 0; 907 } 908 return eitol(sign) * 909 (eitol(hh * MINSPERHOUR + mm) * 910 eitol(SECSPERMIN) + eitol(ss)); 911 } 912 913 static void 914 inrule(fields, nfields) 915 register char ** const fields; 916 const int nfields; 917 { 918 static struct rule r; 919 920 if (nfields != RULE_FIELDS) { 921 error(_("wrong number of fields on Rule line")); 922 return; 923 } 924 if (*fields[RF_NAME] == '\0') { 925 error(_("nameless rule")); 926 return; 927 } 928 r.r_filename = filename; 929 r.r_linenum = linenum; 930 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); 931 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], 932 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); 933 r.r_name = ecpyalloc(fields[RF_NAME]); 934 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); 935 rules = (struct rule *) (void *) erealloc((char *) rules, 936 (int) ((nrules + 1) * sizeof *rules)); 937 rules[nrules++] = r; 938 } 939 940 static int 941 inzone(fields, nfields) 942 register char ** const fields; 943 const int nfields; 944 { 945 register int i; 946 static char * buf; 947 948 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { 949 error(_("wrong number of fields on Zone line")); 950 return FALSE; 951 } 952 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { 953 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); 954 (void)sprintf(buf, /* XXX: sprintf is safe */ 955 _("\"Zone %s\" line and -l option are mutually exclusive"), 956 TZDEFAULT); 957 error(buf); 958 return FALSE; 959 } 960 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { 961 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); 962 (void)sprintf(buf, /* XXX: sprintf is safe */ 963 _("\"Zone %s\" line and -p option are mutually exclusive"), 964 TZDEFRULES); 965 error(buf); 966 return FALSE; 967 } 968 for (i = 0; i < nzones; ++i) 969 if (zones[i].z_name != NULL && 970 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { 971 buf = erealloc(buf, (int) (132 + 972 strlen(fields[ZF_NAME]) + 973 strlen(zones[i].z_filename))); 974 (void)sprintf(buf, /* XXX: sprintf is safe */ 975 _("duplicate zone name %s (file \"%s\", line %d)"), 976 fields[ZF_NAME], 977 zones[i].z_filename, 978 zones[i].z_linenum); 979 error(buf); 980 return FALSE; 981 } 982 return inzsub(fields, nfields, FALSE); 983 } 984 985 static int 986 inzcont(fields, nfields) 987 register char ** const fields; 988 const int nfields; 989 { 990 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { 991 error(_("wrong number of fields on Zone continuation line")); 992 return FALSE; 993 } 994 return inzsub(fields, nfields, TRUE); 995 } 996 997 static int 998 inzsub(fields, nfields, iscont) 999 register char ** const fields; 1000 const int nfields; 1001 const int iscont; 1002 { 1003 register char * cp; 1004 static struct zone z; 1005 register int i_gmtoff, i_rule, i_format; 1006 register int i_untilyear, i_untilmonth; 1007 register int i_untilday, i_untiltime; 1008 register int hasuntil; 1009 1010 if (iscont) { 1011 i_gmtoff = ZFC_GMTOFF; 1012 i_rule = ZFC_RULE; 1013 i_format = ZFC_FORMAT; 1014 i_untilyear = ZFC_TILYEAR; 1015 i_untilmonth = ZFC_TILMONTH; 1016 i_untilday = ZFC_TILDAY; 1017 i_untiltime = ZFC_TILTIME; 1018 z.z_name = NULL; 1019 } else { 1020 i_gmtoff = ZF_GMTOFF; 1021 i_rule = ZF_RULE; 1022 i_format = ZF_FORMAT; 1023 i_untilyear = ZF_TILYEAR; 1024 i_untilmonth = ZF_TILMONTH; 1025 i_untilday = ZF_TILDAY; 1026 i_untiltime = ZF_TILTIME; 1027 z.z_name = ecpyalloc(fields[ZF_NAME]); 1028 } 1029 z.z_filename = filename; 1030 z.z_linenum = linenum; 1031 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid GMT offset"), TRUE); 1032 if ((cp = strchr(fields[i_format], '%')) != 0) { 1033 if (*++cp != 's' || strchr(cp, '%') != 0) { 1034 error(_("invalid abbreviation format")); 1035 return FALSE; 1036 } 1037 } 1038 z.z_rule = ecpyalloc(fields[i_rule]); 1039 z.z_format = ecpyalloc(fields[i_format]); 1040 hasuntil = nfields > i_untilyear; 1041 if (hasuntil) { 1042 z.z_untilrule.r_filename = filename; 1043 z.z_untilrule.r_linenum = linenum; 1044 rulesub(&z.z_untilrule, 1045 fields[i_untilyear], 1046 "only", 1047 "", 1048 (nfields > i_untilmonth) ? 1049 fields[i_untilmonth] : "Jan", 1050 (nfields > i_untilday) ? fields[i_untilday] : "1", 1051 (nfields > i_untiltime) ? fields[i_untiltime] : "0"); 1052 z.z_untiltime = rpytime(&z.z_untilrule, 1053 z.z_untilrule.r_loyear); 1054 if (iscont && nzones > 0 && 1055 z.z_untiltime > min_time && 1056 z.z_untiltime < max_time && 1057 zones[nzones - 1].z_untiltime > min_time && 1058 zones[nzones - 1].z_untiltime < max_time && 1059 zones[nzones - 1].z_untiltime >= z.z_untiltime) { 1060 error(_("Zone continuation line end time is not after end time of previous line")); 1061 return FALSE; 1062 } 1063 } 1064 zones = (struct zone *) (void *) erealloc((char *) zones, 1065 (int) ((nzones + 1) * sizeof *zones)); 1066 zones[nzones++] = z; 1067 /* 1068 ** If there was an UNTIL field on this line, 1069 ** there's more information about the zone on the next line. 1070 */ 1071 return hasuntil; 1072 } 1073 1074 static void 1075 inleap(fields, nfields) 1076 register char ** const fields; 1077 const int nfields; 1078 { 1079 register const char * cp; 1080 register const struct lookup * lp; 1081 register int i, j; 1082 int year, month, day; 1083 long dayoff, tod; 1084 time_t t; 1085 1086 if (nfields != LEAP_FIELDS) { 1087 error(_("wrong number of fields on Leap line")); 1088 return; 1089 } 1090 dayoff = 0; 1091 cp = fields[LP_YEAR]; 1092 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { 1093 /* 1094 * Leapin' Lizards! 1095 */ 1096 error(_("invalid leaping year")); 1097 return; 1098 } 1099 j = EPOCH_YEAR; 1100 while (j != year) { 1101 if (year > j) { 1102 i = len_years[isleap(j)]; 1103 ++j; 1104 } else { 1105 --j; 1106 i = -len_years[isleap(j)]; 1107 } 1108 dayoff = oadd(dayoff, eitol(i)); 1109 } 1110 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { 1111 error(_("invalid month name")); 1112 return; 1113 } 1114 month = lp->l_value; 1115 j = TM_JANUARY; 1116 while (j != month) { 1117 i = len_months[isleap(year)][j]; 1118 dayoff = oadd(dayoff, eitol(i)); 1119 ++j; 1120 } 1121 cp = fields[LP_DAY]; 1122 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || 1123 day <= 0 || day > len_months[isleap(year)][month]) { 1124 error(_("invalid day of month")); 1125 return; 1126 } 1127 dayoff = oadd(dayoff, eitol(day - 1)); 1128 if (dayoff < 0 && !TYPE_SIGNED(time_t)) { 1129 error(_("time before zero")); 1130 return; 1131 } 1132 t = (time_t) dayoff * SECSPERDAY; 1133 /* 1134 ** Cheap overflow check. 1135 */ 1136 if (t / SECSPERDAY != dayoff) { 1137 error(_("time overflow")); 1138 return; 1139 } 1140 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1141 cp = fields[LP_CORR]; 1142 { 1143 register int positive; 1144 int count; 1145 1146 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1147 positive = FALSE; 1148 count = 1; 1149 } else if (strcmp(cp, "--") == 0) { 1150 positive = FALSE; 1151 count = 2; 1152 } else if (strcmp(cp, "+") == 0) { 1153 positive = TRUE; 1154 count = 1; 1155 } else if (strcmp(cp, "++") == 0) { 1156 positive = TRUE; 1157 count = 2; 1158 } else { 1159 error(_("illegal CORRECTION field on Leap line")); 1160 return; 1161 } 1162 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1163 error(_("illegal Rolling/Stationary field on Leap line")); 1164 return; 1165 } 1166 leapadd(tadd(t, tod), positive, lp->l_value, count); 1167 } 1168 } 1169 1170 static void 1171 inlink(fields, nfields) 1172 register char ** const fields; 1173 const int nfields; 1174 { 1175 struct link l; 1176 1177 if (nfields != LINK_FIELDS) { 1178 error(_("wrong number of fields on Link line")); 1179 return; 1180 } 1181 if (*fields[LF_FROM] == '\0') { 1182 error(_("blank FROM field on Link line")); 1183 return; 1184 } 1185 if (*fields[LF_TO] == '\0') { 1186 error(_("blank TO field on Link line")); 1187 return; 1188 } 1189 l.l_filename = filename; 1190 l.l_linenum = linenum; 1191 l.l_from = ecpyalloc(fields[LF_FROM]); 1192 l.l_to = ecpyalloc(fields[LF_TO]); 1193 links = (struct link *) (void *) erealloc((char *) links, 1194 (int) ((nlinks + 1) * sizeof *links)); 1195 links[nlinks++] = l; 1196 } 1197 1198 static void 1199 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1200 register struct rule * const rp; 1201 const char * const loyearp; 1202 const char * const hiyearp; 1203 const char * const typep; 1204 const char * const monthp; 1205 const char * const dayp; 1206 const char * const timep; 1207 { 1208 register const struct lookup * lp; 1209 register const char * cp; 1210 register char * dp; 1211 register char * ep; 1212 1213 if ((lp = byword(monthp, mon_names)) == NULL) { 1214 error(_("invalid month name")); 1215 return; 1216 } 1217 rp->r_month = lp->l_value; 1218 rp->r_todisstd = FALSE; 1219 rp->r_todisgmt = FALSE; 1220 dp = ecpyalloc(timep); 1221 if (*dp != '\0') { 1222 ep = dp + strlen(dp) - 1; 1223 switch (lowerit(*ep)) { 1224 case 's': /* Standard */ 1225 rp->r_todisstd = TRUE; 1226 rp->r_todisgmt = FALSE; 1227 *ep = '\0'; 1228 break; 1229 case 'w': /* Wall */ 1230 rp->r_todisstd = FALSE; 1231 rp->r_todisgmt = FALSE; 1232 *ep = '\0'; 1233 break; 1234 case 'g': /* Greenwich */ 1235 case 'u': /* Universal */ 1236 case 'z': /* Zulu */ 1237 rp->r_todisstd = TRUE; 1238 rp->r_todisgmt = TRUE; 1239 *ep = '\0'; 1240 break; 1241 } 1242 } 1243 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1244 ifree(dp); 1245 /* 1246 ** Year work. 1247 */ 1248 cp = loyearp; 1249 lp = byword(cp, begin_years); 1250 if (lp != NULL) switch ((int) lp->l_value) { 1251 case YR_MINIMUM: 1252 rp->r_loyear = INT_MIN; 1253 break; 1254 case YR_MAXIMUM: 1255 rp->r_loyear = INT_MAX; 1256 break; 1257 default: /* "cannot happen" */ 1258 (void) fprintf(stderr, 1259 _("%s: panic: Invalid l_value %d\n"), 1260 progname, lp->l_value); 1261 (void) exit(EXIT_FAILURE); 1262 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { 1263 error(_("invalid starting year")); 1264 return; 1265 } else if (noise) 1266 if (rp->r_loyear < min_year_representable) 1267 warning(_("starting year too low to be represented")); 1268 else if (rp->r_loyear > max_year_representable) 1269 warning(_("starting year too high to be represented")); 1270 cp = hiyearp; 1271 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1272 case YR_MINIMUM: 1273 rp->r_hiyear = INT_MIN; 1274 break; 1275 case YR_MAXIMUM: 1276 rp->r_hiyear = INT_MAX; 1277 break; 1278 case YR_ONLY: 1279 rp->r_hiyear = rp->r_loyear; 1280 break; 1281 default: /* "cannot happen" */ 1282 (void) fprintf(stderr, 1283 _("%s: panic: Invalid l_value %d\n"), 1284 progname, lp->l_value); 1285 (void) exit(EXIT_FAILURE); 1286 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1287 error(_("invalid ending year")); 1288 return; 1289 } else if (noise) 1290 if (rp->r_loyear < min_year_representable) 1291 warning(_("starting year too low to be represented")); 1292 else if (rp->r_loyear > max_year_representable) 1293 warning(_("starting year too high to be represented")); 1294 if (rp->r_loyear > rp->r_hiyear) { 1295 error(_("starting year greater than ending year")); 1296 return; 1297 } 1298 if (*typep == '\0') 1299 rp->r_yrtype = NULL; 1300 else { 1301 if (rp->r_loyear == rp->r_hiyear) { 1302 error(_("typed single year")); 1303 return; 1304 } 1305 rp->r_yrtype = ecpyalloc(typep); 1306 } 1307 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1308 min_year = rp->r_loyear; 1309 /* 1310 ** Day work. 1311 ** Accept things such as: 1312 ** 1 1313 ** last-Sunday 1314 ** Sun<=20 1315 ** Sun>=7 1316 */ 1317 dp = ecpyalloc(dayp); 1318 if ((lp = byword(dp, lasts)) != NULL) { 1319 rp->r_dycode = DC_DOWLEQ; 1320 rp->r_wday = lp->l_value; 1321 rp->r_dayofmonth = len_months[1][rp->r_month]; 1322 } else { 1323 if ((ep = strchr(dp, '<')) != 0) 1324 rp->r_dycode = DC_DOWLEQ; 1325 else if ((ep = strchr(dp, '>')) != 0) 1326 rp->r_dycode = DC_DOWGEQ; 1327 else { 1328 ep = dp; 1329 rp->r_dycode = DC_DOM; 1330 } 1331 if (rp->r_dycode != DC_DOM) { 1332 *ep++ = 0; 1333 if (*ep++ != '=') { 1334 error(_("invalid day of month")); 1335 ifree(dp); 1336 return; 1337 } 1338 if ((lp = byword(dp, wday_names)) == NULL) { 1339 error(_("invalid weekday name")); 1340 ifree(dp); 1341 return; 1342 } 1343 rp->r_wday = lp->l_value; 1344 } 1345 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1346 rp->r_dayofmonth <= 0 || 1347 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1348 error(_("invalid day of month")); 1349 ifree(dp); 1350 return; 1351 } 1352 } 1353 ifree(dp); 1354 } 1355 1356 static void 1357 convert(val, buf) 1358 const long val; 1359 char * const buf; 1360 { 1361 register int i; 1362 register long shift; 1363 1364 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1365 buf[i] = val >> shift; 1366 } 1367 1368 static void 1369 puttzcode(val, fp) 1370 const long val; 1371 FILE * const fp; 1372 { 1373 char buf[4]; 1374 1375 convert(val, buf); 1376 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1377 } 1378 1379 static int 1380 atcomp(avp, bvp) 1381 const void * avp; 1382 const void * bvp; 1383 { 1384 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) 1385 return -1; 1386 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) 1387 return 1; 1388 else return 0; 1389 } 1390 1391 static void 1392 writezone(name) 1393 const char * const name; 1394 { 1395 register FILE * fp; 1396 register int i, j; 1397 static char * fullname; 1398 static struct tzhead tzh; 1399 time_t ats[TZ_MAX_TIMES]; 1400 unsigned char types[TZ_MAX_TIMES]; 1401 1402 /* 1403 ** Sort. 1404 */ 1405 if (timecnt > 1) 1406 (void) qsort((void *) attypes, (size_t) timecnt, 1407 (size_t) sizeof *attypes, atcomp); 1408 /* 1409 ** Optimize. 1410 */ 1411 { 1412 int fromi; 1413 int toi; 1414 1415 toi = 0; 1416 fromi = 0; 1417 while (fromi < timecnt && attypes[fromi].at < min_time) 1418 ++fromi; 1419 if (isdsts[0] == 0) 1420 while (fromi < timecnt && attypes[fromi].type == 0) 1421 ++fromi; /* handled by default rule */ 1422 for ( ; fromi < timecnt; ++fromi) { 1423 if (toi != 0 1424 && ((attypes[fromi].at 1425 + gmtoffs[attypes[toi - 1].type]) 1426 <= (attypes[toi - 1].at 1427 + gmtoffs[toi == 1 ? 0 1428 : attypes[toi - 2].type]))) { 1429 attypes[toi - 1].type = attypes[fromi].type; 1430 continue; 1431 } 1432 if (toi == 0 || 1433 attypes[toi - 1].type != attypes[fromi].type) 1434 attypes[toi++] = attypes[fromi]; 1435 } 1436 timecnt = toi; 1437 } 1438 /* 1439 ** Transfer. 1440 */ 1441 for (i = 0; i < timecnt; ++i) { 1442 ats[i] = attypes[i].at; 1443 types[i] = attypes[i].type; 1444 } 1445 fullname = erealloc(fullname, 1446 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1447 (void) sprintf(fullname, "%s/%s", directory, name); /* XXX: sprintf is safe */ 1448 /* 1449 ** Remove old file, if any, to snap links. 1450 */ 1451 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { 1452 const char *e = strerror(errno); 1453 1454 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), 1455 progname, fullname, e); 1456 (void) exit(EXIT_FAILURE); 1457 } 1458 if ((fp = fopen(fullname, "wb")) == NULL) { 1459 if (mkdirs(fullname) != 0) 1460 (void) exit(EXIT_FAILURE); 1461 if ((fp = fopen(fullname, "wb")) == NULL) { 1462 const char *e = strerror(errno); 1463 1464 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), 1465 progname, fullname, e); 1466 (void) exit(EXIT_FAILURE); 1467 } 1468 } 1469 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1470 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1471 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1472 convert(eitol(timecnt), tzh.tzh_timecnt); 1473 convert(eitol(typecnt), tzh.tzh_typecnt); 1474 convert(eitol(charcnt), tzh.tzh_charcnt); 1475 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1476 DO(tzh_reserved); 1477 DO(tzh_ttisgmtcnt); 1478 DO(tzh_ttisstdcnt); 1479 DO(tzh_leapcnt); 1480 DO(tzh_timecnt); 1481 DO(tzh_typecnt); 1482 DO(tzh_charcnt); 1483 #undef DO 1484 for (i = 0; i < timecnt; ++i) { 1485 j = leapcnt; 1486 while (--j >= 0) 1487 if (ats[i] >= trans[j]) { 1488 ats[i] = tadd(ats[i], corr[j]); 1489 break; 1490 } 1491 puttzcode((long) ats[i], fp); 1492 } 1493 if (timecnt > 0) 1494 (void) fwrite((void *) types, (size_t) sizeof types[0], 1495 (size_t) timecnt, fp); 1496 for (i = 0; i < typecnt; ++i) { 1497 puttzcode((long) gmtoffs[i], fp); 1498 (void) putc(isdsts[i], fp); 1499 (void) putc(abbrinds[i], fp); 1500 } 1501 if (charcnt != 0) 1502 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1503 (size_t) charcnt, fp); 1504 for (i = 0; i < leapcnt; ++i) { 1505 if (roll[i]) { 1506 if (timecnt == 0 || trans[i] < ats[0]) { 1507 j = 0; 1508 while (isdsts[j]) 1509 if (++j >= typecnt) { 1510 j = 0; 1511 break; 1512 } 1513 } else { 1514 j = 1; 1515 while (j < timecnt && trans[i] >= ats[j]) 1516 ++j; 1517 j = types[j - 1]; 1518 } 1519 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1520 } else puttzcode((long) trans[i], fp); 1521 puttzcode((long) corr[i], fp); 1522 } 1523 for (i = 0; i < typecnt; ++i) 1524 (void) putc(ttisstds[i], fp); 1525 for (i = 0; i < typecnt; ++i) 1526 (void) putc(ttisgmts[i], fp); 1527 if (ferror(fp) || fclose(fp)) { 1528 (void) fprintf(stderr, _("%s: Error writing %s\n"), 1529 progname, fullname); 1530 (void) exit(EXIT_FAILURE); 1531 } 1532 } 1533 1534 static void 1535 doabbr(abbr, abbrlen, format, letters, isdst) 1536 char * const abbr; 1537 const int abbrlen; 1538 const char * const format; 1539 const char * const letters; 1540 const int isdst; 1541 { 1542 if (strchr(format, '/') == NULL) { 1543 if (letters == NULL) 1544 (void)strncpy(abbr, format, abbrlen - 1); 1545 else 1546 (void)snprintf(abbr, abbrlen, format, letters); 1547 } else if (isdst) 1548 (void)strncpy(abbr, strchr(format, '/') + 1, abbrlen - 1); 1549 else { 1550 (void)strncpy(abbr, format, abbrlen - 1); 1551 *strchr(abbr, '/') = '\0'; 1552 } 1553 } 1554 1555 static void 1556 outzone(zpfirst, zonecount) 1557 const struct zone * const zpfirst; 1558 const int zonecount; 1559 { 1560 register const struct zone * zp; 1561 register struct rule * rp; 1562 register int i, j; 1563 register int usestart, useuntil; 1564 register time_t starttime, untiltime; 1565 register long gmtoff; 1566 register long stdoff; 1567 register int year; 1568 register long startoff; 1569 register int startttisstd; 1570 register int startttisgmt; 1571 register int type; 1572 char startbuf[BUFSIZ]; 1573 1574 INITIALIZE(untiltime); 1575 INITIALIZE(starttime); 1576 /* 1577 ** Now. . .finally. . .generate some useful data! 1578 */ 1579 timecnt = 0; 1580 typecnt = 0; 1581 charcnt = 0; 1582 /* 1583 ** A guess that may well be corrected later. 1584 */ 1585 stdoff = 0; 1586 /* 1587 ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au) 1588 ** for noting the need to unconditionally initialize startttisstd. 1589 */ 1590 startttisstd = FALSE; 1591 startttisgmt = FALSE; 1592 for (i = 0; i < zonecount; ++i) { 1593 zp = &zpfirst[i]; 1594 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1595 useuntil = i < (zonecount - 1); 1596 if (useuntil && zp->z_untiltime <= min_time) 1597 continue; 1598 gmtoff = zp->z_gmtoff; 1599 eat(zp->z_filename, zp->z_linenum); 1600 *startbuf = '\0'; 1601 startoff = zp->z_gmtoff; 1602 if (zp->z_nrules == 0) { 1603 stdoff = zp->z_stdoff; 1604 doabbr(startbuf, sizeof startbuf, zp->z_format, 1605 (char *) NULL, stdoff != 0); 1606 type = addtype(oadd(zp->z_gmtoff, stdoff), 1607 startbuf, stdoff != 0, startttisstd, 1608 startttisgmt); 1609 if (usestart) { 1610 addtt(starttime, type); 1611 usestart = FALSE; 1612 } 1613 else if (stdoff != 0) 1614 addtt(min_time, type); 1615 } else for (year = min_year; year <= max_year; ++year) { 1616 if (useuntil && year > zp->z_untilrule.r_hiyear) 1617 break; 1618 /* 1619 ** Mark which rules to do in the current year. 1620 ** For those to do, calculate rpytime(rp, year); 1621 */ 1622 for (j = 0; j < zp->z_nrules; ++j) { 1623 rp = &zp->z_rules[j]; 1624 eats(zp->z_filename, zp->z_linenum, 1625 rp->r_filename, rp->r_linenum); 1626 rp->r_todo = year >= rp->r_loyear && 1627 year <= rp->r_hiyear && 1628 yearistype(year, rp->r_yrtype); 1629 if (rp->r_todo) 1630 rp->r_temp = rpytime(rp, year); 1631 } 1632 for ( ; ; ) { 1633 register int k; 1634 register time_t jtime, ktime; 1635 register long offset; 1636 char buf[BUFSIZ]; 1637 1638 INITIALIZE(ktime); 1639 if (useuntil) { 1640 /* 1641 ** Turn untiltime into GMT 1642 ** assuming the current gmtoff and 1643 ** stdoff values. 1644 */ 1645 untiltime = zp->z_untiltime; 1646 if (!zp->z_untilrule.r_todisgmt) 1647 untiltime = tadd(untiltime, 1648 -gmtoff); 1649 if (!zp->z_untilrule.r_todisstd) 1650 untiltime = tadd(untiltime, 1651 -stdoff); 1652 } 1653 /* 1654 ** Find the rule (of those to do, if any) 1655 ** that takes effect earliest in the year. 1656 */ 1657 k = -1; 1658 for (j = 0; j < zp->z_nrules; ++j) { 1659 rp = &zp->z_rules[j]; 1660 if (!rp->r_todo) 1661 continue; 1662 eats(zp->z_filename, zp->z_linenum, 1663 rp->r_filename, rp->r_linenum); 1664 offset = rp->r_todisgmt ? 0 : gmtoff; 1665 if (!rp->r_todisstd) 1666 offset = oadd(offset, stdoff); 1667 jtime = rp->r_temp; 1668 if (jtime == min_time || 1669 jtime == max_time) 1670 continue; 1671 jtime = tadd(jtime, -offset); 1672 if (k < 0 || jtime < ktime) { 1673 k = j; 1674 ktime = jtime; 1675 } 1676 } 1677 if (k < 0) 1678 break; /* go on to next year */ 1679 rp = &zp->z_rules[k]; 1680 rp->r_todo = FALSE; 1681 if (useuntil && ktime >= untiltime) 1682 break; 1683 stdoff = rp->r_stdoff; 1684 if (usestart && ktime == starttime) 1685 usestart = FALSE; 1686 if (usestart) { 1687 if (ktime < starttime) { 1688 startoff = oadd(zp->z_gmtoff, 1689 stdoff); 1690 doabbr(startbuf,sizeof startbuf, 1691 zp->z_format, 1692 rp->r_abbrvar, 1693 rp->r_stdoff != 0); 1694 continue; 1695 } 1696 if (*startbuf == '\0' && 1697 startoff == oadd(zp->z_gmtoff, 1698 stdoff)) { 1699 doabbr(startbuf,sizeof startbuf, 1700 zp->z_format, 1701 rp->r_abbrvar, 1702 rp->r_stdoff != 0); 1703 } 1704 } 1705 eats(zp->z_filename, zp->z_linenum, 1706 rp->r_filename, rp->r_linenum); 1707 doabbr(buf, sizeof buf, zp->z_format, 1708 rp->r_abbrvar, rp->r_stdoff != 0); 1709 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1710 type = addtype(offset, buf, rp->r_stdoff != 0, 1711 rp->r_todisstd, rp->r_todisgmt); 1712 addtt(ktime, type); 1713 } 1714 } 1715 if (usestart) { 1716 if (*startbuf == '\0' && 1717 zp->z_format != NULL && 1718 strchr(zp->z_format, '%') == NULL && 1719 strchr(zp->z_format, '/') == NULL) 1720 (void)strncpy(startbuf, zp->z_format, 1721 sizeof(startbuf) - 1); 1722 eat(zp->z_filename, zp->z_linenum); 1723 if (*startbuf == '\0') 1724 error(_("can't determine time zone abbreviation to use just after until time")); 1725 else addtt(starttime, 1726 addtype(startoff, startbuf, 1727 startoff != zp->z_gmtoff, 1728 startttisstd, 1729 startttisgmt)); 1730 } 1731 /* 1732 ** Now we may get to set starttime for the next zone line. 1733 */ 1734 if (useuntil) { 1735 startttisstd = zp->z_untilrule.r_todisstd; 1736 startttisgmt = zp->z_untilrule.r_todisgmt; 1737 starttime = zp->z_untiltime; 1738 if (!startttisstd) 1739 starttime = tadd(starttime, -stdoff); 1740 if (!startttisgmt) 1741 starttime = tadd(starttime, -gmtoff); 1742 } 1743 } 1744 writezone(zpfirst->z_name); 1745 } 1746 1747 static void 1748 addtt(starttime, type) 1749 const time_t starttime; 1750 int type; 1751 { 1752 if (starttime <= min_time || 1753 (timecnt == 1 && attypes[0].at < min_time)) { 1754 gmtoffs[0] = gmtoffs[type]; 1755 isdsts[0] = isdsts[type]; 1756 ttisstds[0] = ttisstds[type]; 1757 ttisgmts[0] = ttisgmts[type]; 1758 if (abbrinds[type] != 0) 1759 (void) strcpy(chars, &chars[abbrinds[type]]); 1760 abbrinds[0] = 0; 1761 charcnt = strlen(chars) + 1; 1762 typecnt = 1; 1763 timecnt = 0; 1764 type = 0; 1765 } 1766 if (timecnt >= TZ_MAX_TIMES) { 1767 error(_("too many transitions?!")); 1768 (void) exit(EXIT_FAILURE); 1769 } 1770 attypes[timecnt].at = starttime; 1771 attypes[timecnt].type = type; 1772 ++timecnt; 1773 } 1774 1775 static int 1776 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1777 const long gmtoff; 1778 const char * const abbr; 1779 const int isdst; 1780 const int ttisstd; 1781 const int ttisgmt; 1782 { 1783 register int i, j; 1784 1785 if (isdst != TRUE && isdst != FALSE) { 1786 error(_("internal error - addtype called with bad isdst")); 1787 (void) exit(EXIT_FAILURE); 1788 } 1789 if (ttisstd != TRUE && ttisstd != FALSE) { 1790 error(_("internal error - addtype called with bad ttisstd")); 1791 (void) exit(EXIT_FAILURE); 1792 } 1793 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1794 error(_("internal error - addtype called with bad ttisgmt")); 1795 (void) exit(EXIT_FAILURE); 1796 } 1797 /* 1798 ** See if there's already an entry for this zone type. 1799 ** If so, just return its index. 1800 */ 1801 for (i = 0; i < typecnt; ++i) { 1802 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1803 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1804 ttisstd == ttisstds[i] && 1805 ttisgmt == ttisgmts[i]) 1806 return i; 1807 } 1808 /* 1809 ** There isn't one; add a new one, unless there are already too 1810 ** many. 1811 */ 1812 if (typecnt >= TZ_MAX_TYPES) { 1813 error(_("too many local time types")); 1814 (void) exit(EXIT_FAILURE); 1815 } 1816 gmtoffs[i] = gmtoff; 1817 isdsts[i] = isdst; 1818 ttisstds[i] = ttisstd; 1819 ttisgmts[i] = ttisgmt; 1820 1821 for (j = 0; j < charcnt; ++j) 1822 if (strcmp(&chars[j], abbr) == 0) 1823 break; 1824 if (j == charcnt) 1825 newabbr(abbr); 1826 abbrinds[i] = j; 1827 ++typecnt; 1828 return i; 1829 } 1830 1831 static void 1832 leapadd(t, positive, rolling, count) 1833 const time_t t; 1834 const int positive; 1835 const int rolling; 1836 int count; 1837 { 1838 register int i, j; 1839 1840 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1841 error(_("too many leap seconds")); 1842 (void) exit(EXIT_FAILURE); 1843 } 1844 for (i = 0; i < leapcnt; ++i) 1845 if (t <= trans[i]) { 1846 if (t == trans[i]) { 1847 error(_("repeated leap second moment")); 1848 (void) exit(EXIT_FAILURE); 1849 } 1850 break; 1851 } 1852 do { 1853 for (j = leapcnt; j > i; --j) { 1854 trans[j] = trans[j - 1]; 1855 corr[j] = corr[j - 1]; 1856 roll[j] = roll[j - 1]; 1857 } 1858 trans[i] = t; 1859 corr[i] = positive ? 1L : eitol(-count); 1860 roll[i] = rolling; 1861 ++leapcnt; 1862 } while (positive && --count != 0); 1863 } 1864 1865 static void 1866 adjleap P((void)) 1867 { 1868 register int i; 1869 register long last = 0; 1870 1871 /* 1872 ** propagate leap seconds forward 1873 */ 1874 for (i = 0; i < leapcnt; ++i) { 1875 trans[i] = tadd(trans[i], last); 1876 last = corr[i] += last; 1877 } 1878 } 1879 1880 static int 1881 yearistype(year, type) 1882 const int year; 1883 const char * const type; 1884 { 1885 static char * buf; 1886 int result; 1887 1888 if (type == NULL || *type == '\0') 1889 return TRUE; 1890 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1891 (void)sprintf(buf, "%s %d %s", yitcommand, year, type); /* XXX: sprintf is safe */ 1892 result = system(buf); 1893 if (result == 0) 1894 return TRUE; 1895 if (result == (1 << 8)) 1896 return FALSE; 1897 error(_("Wild result from command execution")); 1898 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), 1899 progname, buf, result); 1900 for ( ; ; ) 1901 (void) exit(EXIT_FAILURE); 1902 } 1903 1904 static int 1905 lowerit(a) 1906 int a; 1907 { 1908 a = (unsigned char) a; 1909 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1910 } 1911 1912 static int 1913 ciequal(ap, bp) /* case-insensitive equality */ 1914 register const char * ap; 1915 register const char * bp; 1916 { 1917 while (lowerit(*ap) == lowerit(*bp++)) 1918 if (*ap++ == '\0') 1919 return TRUE; 1920 return FALSE; 1921 } 1922 1923 static int 1924 itsabbr(abbr, word) 1925 register const char * abbr; 1926 register const char * word; 1927 { 1928 if (lowerit(*abbr) != lowerit(*word)) 1929 return FALSE; 1930 ++word; 1931 while (*++abbr != '\0') 1932 do { 1933 if (*word == '\0') 1934 return FALSE; 1935 } while (lowerit(*word++) != lowerit(*abbr)); 1936 return TRUE; 1937 } 1938 1939 static const struct lookup * 1940 byword(word, table) 1941 register const char * const word; 1942 register const struct lookup * const table; 1943 { 1944 register const struct lookup * foundlp; 1945 register const struct lookup * lp; 1946 1947 if (word == NULL || table == NULL) 1948 return NULL; 1949 /* 1950 ** Look for exact match. 1951 */ 1952 for (lp = table; lp->l_word != NULL; ++lp) 1953 if (ciequal(word, lp->l_word)) 1954 return lp; 1955 /* 1956 ** Look for inexact match. 1957 */ 1958 foundlp = NULL; 1959 for (lp = table; lp->l_word != NULL; ++lp) 1960 if (itsabbr(word, lp->l_word)) 1961 if (foundlp == NULL) 1962 foundlp = lp; 1963 else return NULL; /* multiple inexact matches */ 1964 return foundlp; 1965 } 1966 1967 static char ** 1968 getfields(cp) 1969 register char * cp; 1970 { 1971 register char * dp; 1972 register char ** array; 1973 register int nsubs; 1974 1975 if (cp == NULL) 1976 return NULL; 1977 array = (char **) (void *) 1978 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 1979 nsubs = 0; 1980 for ( ; ; ) { 1981 while (isascii(*cp) && isspace((unsigned char) *cp)) 1982 ++cp; 1983 if (*cp == '\0' || *cp == '#') 1984 break; 1985 array[nsubs++] = dp = cp; 1986 do { 1987 if ((*dp = *cp++) != '"') 1988 ++dp; 1989 else while ((*dp = *cp++) != '"') 1990 if (*dp != '\0') 1991 ++dp; 1992 else error(_("Odd number of quotation marks")); 1993 } while (*cp != '\0' && *cp != '#' && 1994 (!isascii(*cp) || !isspace((unsigned char) *cp))); 1995 if (isascii(*cp) && isspace((unsigned char) *cp)) 1996 ++cp; 1997 *dp = '\0'; 1998 } 1999 array[nsubs] = NULL; 2000 return array; 2001 } 2002 2003 static long 2004 oadd(t1, t2) 2005 const long t1; 2006 const long t2; 2007 { 2008 register long t; 2009 2010 t = t1 + t2; 2011 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2012 error(_("time overflow")); 2013 (void) exit(EXIT_FAILURE); 2014 } 2015 return t; 2016 } 2017 2018 static time_t 2019 tadd(t1, t2) 2020 const time_t t1; 2021 const long t2; 2022 { 2023 register time_t t; 2024 2025 if (t1 == max_time && t2 > 0) 2026 return max_time; 2027 if (t1 == min_time && t2 < 0) 2028 return min_time; 2029 t = t1 + t2; 2030 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2031 error(_("time overflow")); 2032 (void) exit(EXIT_FAILURE); 2033 } 2034 return t; 2035 } 2036 2037 /* 2038 ** Given a rule, and a year, compute the date - in seconds since January 1, 2039 ** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2040 */ 2041 2042 static time_t 2043 rpytime(rp, wantedy) 2044 register const struct rule * const rp; 2045 register const int wantedy; 2046 { 2047 register int y, m, i; 2048 register long dayoff; /* with a nod to Margaret O. */ 2049 register time_t t; 2050 2051 if (wantedy == INT_MIN) 2052 return min_time; 2053 if (wantedy == INT_MAX) 2054 return max_time; 2055 dayoff = 0; 2056 m = TM_JANUARY; 2057 y = EPOCH_YEAR; 2058 while (wantedy != y) { 2059 if (wantedy > y) { 2060 i = len_years[isleap(y)]; 2061 ++y; 2062 } else { 2063 --y; 2064 i = -len_years[isleap(y)]; 2065 } 2066 dayoff = oadd(dayoff, eitol(i)); 2067 } 2068 while (m != rp->r_month) { 2069 i = len_months[isleap(y)][m]; 2070 dayoff = oadd(dayoff, eitol(i)); 2071 ++m; 2072 } 2073 i = rp->r_dayofmonth; 2074 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2075 if (rp->r_dycode == DC_DOWLEQ) 2076 --i; 2077 else { 2078 error(_("use of 2/29 in non leap-year")); 2079 (void) exit(EXIT_FAILURE); 2080 } 2081 } 2082 --i; 2083 dayoff = oadd(dayoff, eitol(i)); 2084 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2085 register long wday; 2086 2087 #define LDAYSPERWEEK ((long) DAYSPERWEEK) 2088 wday = eitol(EPOCH_WDAY); 2089 /* 2090 ** Don't trust mod of negative numbers. 2091 */ 2092 if (dayoff >= 0) 2093 wday = (wday + dayoff) % LDAYSPERWEEK; 2094 else { 2095 wday -= ((-dayoff) % LDAYSPERWEEK); 2096 if (wday < 0) 2097 wday += LDAYSPERWEEK; 2098 } 2099 while (wday != eitol(rp->r_wday)) 2100 if (rp->r_dycode == DC_DOWGEQ) { 2101 dayoff = oadd(dayoff, (long) 1); 2102 if (++wday >= LDAYSPERWEEK) 2103 wday = 0; 2104 ++i; 2105 } else { 2106 dayoff = oadd(dayoff, (long) -1); 2107 if (--wday < 0) 2108 wday = LDAYSPERWEEK - 1; 2109 --i; 2110 } 2111 if (i < 0 || i >= len_months[isleap(y)][m]) { 2112 error(_("no day in month matches rule")); 2113 (void) exit(EXIT_FAILURE); 2114 } 2115 } 2116 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2117 return min_time; 2118 t = (time_t) dayoff * SECSPERDAY; 2119 /* 2120 ** Cheap overflow check. 2121 */ 2122 if (t / SECSPERDAY != dayoff) 2123 return (dayoff > 0) ? max_time : min_time; 2124 return tadd(t, rp->r_tod); 2125 } 2126 2127 static void 2128 newabbr(string) 2129 const char * const string; 2130 { 2131 register int i; 2132 2133 i = strlen(string) + 1; 2134 if (charcnt + i > TZ_MAX_CHARS) { 2135 error(_("too many, or too long, time zone abbreviations")); 2136 (void) exit(EXIT_FAILURE); 2137 } 2138 (void)strncpy(&chars[charcnt], string, sizeof(chars) - charcnt - 1); 2139 charcnt += eitol(i); 2140 } 2141 2142 static int 2143 mkdirs(argname) 2144 char * const argname; 2145 { 2146 register char * name; 2147 register char * cp; 2148 2149 if (argname == NULL || *argname == '\0') 2150 return 0; 2151 cp = name = ecpyalloc(argname); 2152 while ((cp = strchr(cp + 1, '/')) != 0) { 2153 *cp = '\0'; 2154 #ifndef unix 2155 /* 2156 ** DOS drive specifier? 2157 */ 2158 if (isalpha((unsigned char) name[0]) && 2159 name[1] == ':' && name[2] == '\0') { 2160 *cp = '/'; 2161 continue; 2162 } 2163 #endif /* !defined unix */ 2164 if (!itsdir(name)) { 2165 /* 2166 ** It doesn't seem to exist, so we try to create it. 2167 ** Creation may fail because of the directory being 2168 ** created by some other multiprocessor, so we get 2169 ** to do extra checking. 2170 */ 2171 if (mkdir(name, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) { 2172 const char *e = strerror(errno); 2173 2174 if (errno != EEXIST || !itsdir(name)) { 2175 (void) fprintf(stderr, 2176 _("%s: Can't create directory %s: %s\n"), 2177 progname, name, e); 2178 ifree(name); 2179 return -1; 2180 } 2181 } 2182 } 2183 *cp = '/'; 2184 } 2185 ifree(name); 2186 return 0; 2187 } 2188 2189 static long 2190 eitol(i) 2191 const int i; 2192 { 2193 long l; 2194 2195 l = i; 2196 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { 2197 (void) fprintf(stderr, 2198 _("%s: %d did not sign extend correctly\n"), 2199 progname, i); 2200 (void) exit(EXIT_FAILURE); 2201 } 2202 return l; 2203 } 2204 2205 /* 2206 ** UNIX was a registered trademark of UNIX System Laboratories in 1993. 2207 */ 2208