zic.c revision 1.1.1.13
1 static char elsieid[] = "@(#)zic.c 7.113"; 2 3 #include "private.h" 4 #include "locale.h" 5 #include "tzfile.h" 6 7 #if HAVE_SYS_STAT_H 8 #include "sys/stat.h" 9 #endif 10 #ifdef S_IRUSR 11 #define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) 12 #else 13 #define MKDIR_UMASK 0755 14 #endif 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, 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 [ --version ] [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\t[ -d directory ] [ -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 for (i = 1; i < argc; ++i) 478 if (strcmp(argv[i], "--version") == 0) { 479 (void) printf("%s\n", elsieid); 480 (void) exit(EXIT_SUCCESS); 481 } 482 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) 483 switch (c) { 484 default: 485 usage(); 486 case 'd': 487 if (directory == NULL) 488 directory = optarg; 489 else { 490 (void) fprintf(stderr, 491 _("%s: More than one -d option specified\n"), 492 progname); 493 (void) exit(EXIT_FAILURE); 494 } 495 break; 496 case 'l': 497 if (lcltime == NULL) 498 lcltime = optarg; 499 else { 500 (void) fprintf(stderr, 501 _("%s: More than one -l option specified\n"), 502 progname); 503 (void) exit(EXIT_FAILURE); 504 } 505 break; 506 case 'p': 507 if (psxrules == NULL) 508 psxrules = optarg; 509 else { 510 (void) fprintf(stderr, 511 _("%s: More than one -p option specified\n"), 512 progname); 513 (void) exit(EXIT_FAILURE); 514 } 515 break; 516 case 'y': 517 if (yitcommand == NULL) 518 yitcommand = optarg; 519 else { 520 (void) fprintf(stderr, 521 _("%s: More than one -y option specified\n"), 522 progname); 523 (void) exit(EXIT_FAILURE); 524 } 525 break; 526 case 'L': 527 if (leapsec == NULL) 528 leapsec = optarg; 529 else { 530 (void) fprintf(stderr, 531 _("%s: More than one -L option specified\n"), 532 progname); 533 (void) exit(EXIT_FAILURE); 534 } 535 break; 536 case 'v': 537 noise = TRUE; 538 break; 539 case 's': 540 sflag = TRUE; 541 break; 542 } 543 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 544 usage(); /* usage message by request */ 545 if (directory == NULL) 546 directory = TZDIR; 547 if (yitcommand == NULL) 548 yitcommand = "yearistype"; 549 550 setboundaries(); 551 552 if (optind < argc && leapsec != NULL) { 553 infile(leapsec); 554 adjleap(); 555 } 556 557 for (i = optind; i < argc; ++i) 558 infile(argv[i]); 559 if (errors) 560 (void) exit(EXIT_FAILURE); 561 associate(); 562 for (i = 0; i < nzones; i = j) { 563 /* 564 ** Find the next non-continuation zone entry. 565 */ 566 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 567 continue; 568 outzone(&zones[i], j - i); 569 } 570 /* 571 ** Make links. 572 */ 573 for (i = 0; i < nlinks; ++i) { 574 eat(links[i].l_filename, links[i].l_linenum); 575 dolink(links[i].l_from, links[i].l_to); 576 } 577 if (lcltime != NULL) { 578 eat("command line", 1); 579 dolink(lcltime, TZDEFAULT); 580 } 581 if (psxrules != NULL) { 582 eat("command line", 1); 583 dolink(psxrules, TZDEFRULES); 584 } 585 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 586 } 587 588 static void 589 dolink(fromfile, tofile) 590 const char * const fromfile; 591 const char * const tofile; 592 { 593 register char * fromname; 594 register char * toname; 595 596 if (fromfile[0] == '/') 597 fromname = ecpyalloc(fromfile); 598 else { 599 fromname = ecpyalloc(directory); 600 fromname = ecatalloc(fromname, "/"); 601 fromname = ecatalloc(fromname, fromfile); 602 } 603 if (tofile[0] == '/') 604 toname = ecpyalloc(tofile); 605 else { 606 toname = ecpyalloc(directory); 607 toname = ecatalloc(toname, "/"); 608 toname = ecatalloc(toname, tofile); 609 } 610 /* 611 ** We get to be careful here since 612 ** there's a fair chance of root running us. 613 */ 614 if (!itsdir(toname)) 615 (void) remove(toname); 616 if (link(fromname, toname) != 0) { 617 int result; 618 619 if (mkdirs(toname) != 0) 620 (void) exit(EXIT_FAILURE); 621 622 result = link(fromname, toname); 623 #if (HAVE_SYMLINK - 0) 624 if (result != 0 && 625 access(fromname, F_OK) == 0 && 626 !itsdir(fromname)) { 627 const char *s = tofile; 628 register char * symlinkcontents = NULL; 629 while ((s = strchr(s+1, '/')) != NULL) 630 symlinkcontents = ecatalloc(symlinkcontents, "../"); 631 symlinkcontents = ecatalloc(symlinkcontents, fromfile); 632 633 result = symlink(symlinkcontents, toname); 634 if (result == 0) 635 warning(_("hard link failed, symbolic link used")); 636 ifree(symlinkcontents); 637 } 638 #endif 639 if (result != 0) { 640 const char *e = strerror(errno); 641 642 (void) fprintf(stderr, 643 _("%s: Can't link from %s to %s: %s\n"), 644 progname, fromname, toname, e); 645 (void) exit(EXIT_FAILURE); 646 } 647 } 648 ifree(fromname); 649 ifree(toname); 650 } 651 652 #ifndef INT_MAX 653 #define INT_MAX ((int) (((unsigned)~0)>>1)) 654 #endif /* !defined INT_MAX */ 655 656 #ifndef INT_MIN 657 #define INT_MIN ((int) ~(((unsigned)~0)>>1)) 658 #endif /* !defined INT_MIN */ 659 660 /* 661 ** The tz file format currently allows at most 32-bit quantities. 662 ** This restriction should be removed before signed 32-bit values 663 ** wrap around in 2038, but unfortunately this will require a 664 ** change to the tz file format. 665 */ 666 667 #define MAX_BITS_IN_FILE 32 668 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) 669 670 static void 671 setboundaries P((void)) 672 { 673 if (TYPE_SIGNED(time_t)) { 674 min_time = ~ (time_t) 0; 675 min_time <<= TIME_T_BITS_IN_FILE - 1; 676 max_time = ~ (time_t) 0 - min_time; 677 if (sflag) 678 min_time = 0; 679 } else { 680 min_time = 0; 681 max_time = 2 - sflag; 682 max_time <<= TIME_T_BITS_IN_FILE - 1; 683 --max_time; 684 } 685 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; 686 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; 687 min_year_representable = min_year; 688 max_year_representable = max_year; 689 } 690 691 static int 692 itsdir(name) 693 const char * const name; 694 { 695 register char * myname; 696 register int accres; 697 698 myname = ecpyalloc(name); 699 myname = ecatalloc(myname, "/."); 700 accres = access(myname, F_OK); 701 ifree(myname); 702 return accres == 0; 703 } 704 705 /* 706 ** Associate sets of rules with zones. 707 */ 708 709 /* 710 ** Sort by rule name. 711 */ 712 713 static int 714 rcomp(cp1, cp2) 715 const void * cp1; 716 const void * cp2; 717 { 718 return strcmp(((const struct rule *) cp1)->r_name, 719 ((const struct rule *) cp2)->r_name); 720 } 721 722 static void 723 associate P((void)) 724 { 725 register struct zone * zp; 726 register struct rule * rp; 727 register int base, out; 728 register int i, j; 729 730 if (nrules != 0) { 731 (void) qsort((void *) rules, (size_t) nrules, 732 (size_t) sizeof *rules, rcomp); 733 for (i = 0; i < nrules - 1; ++i) { 734 if (strcmp(rules[i].r_name, 735 rules[i + 1].r_name) != 0) 736 continue; 737 if (strcmp(rules[i].r_filename, 738 rules[i + 1].r_filename) == 0) 739 continue; 740 eat(rules[i].r_filename, rules[i].r_linenum); 741 warning(_("same rule name in multiple files")); 742 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); 743 warning(_("same rule name in multiple files")); 744 for (j = i + 2; j < nrules; ++j) { 745 if (strcmp(rules[i].r_name, 746 rules[j].r_name) != 0) 747 break; 748 if (strcmp(rules[i].r_filename, 749 rules[j].r_filename) == 0) 750 continue; 751 if (strcmp(rules[i + 1].r_filename, 752 rules[j].r_filename) == 0) 753 continue; 754 break; 755 } 756 i = j - 1; 757 } 758 } 759 for (i = 0; i < nzones; ++i) { 760 zp = &zones[i]; 761 zp->z_rules = NULL; 762 zp->z_nrules = 0; 763 } 764 for (base = 0; base < nrules; base = out) { 765 rp = &rules[base]; 766 for (out = base + 1; out < nrules; ++out) 767 if (strcmp(rp->r_name, rules[out].r_name) != 0) 768 break; 769 for (i = 0; i < nzones; ++i) { 770 zp = &zones[i]; 771 if (strcmp(zp->z_rule, rp->r_name) != 0) 772 continue; 773 zp->z_rules = rp; 774 zp->z_nrules = out - base; 775 } 776 } 777 for (i = 0; i < nzones; ++i) { 778 zp = &zones[i]; 779 if (zp->z_nrules == 0) { 780 /* 781 ** Maybe we have a local standard time offset. 782 */ 783 eat(zp->z_filename, zp->z_linenum); 784 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), 785 TRUE); 786 /* 787 ** Note, though, that if there's no rule, 788 ** a '%s' in the format is a bad thing. 789 */ 790 if (strchr(zp->z_format, '%') != 0) 791 error(_("%s in ruleless zone")); 792 } 793 } 794 if (errors) 795 (void) exit(EXIT_FAILURE); 796 } 797 798 static void 799 infile(name) 800 const char * name; 801 { 802 register FILE * fp; 803 register char ** fields; 804 register char * cp; 805 register const struct lookup * lp; 806 register int nfields; 807 register int wantcont; 808 register int num; 809 char buf[BUFSIZ]; 810 811 if (strcmp(name, "-") == 0) { 812 name = _("standard input"); 813 fp = stdin; 814 } else if ((fp = fopen(name, "r")) == NULL) { 815 const char *e = strerror(errno); 816 817 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), 818 progname, name, e); 819 (void) exit(EXIT_FAILURE); 820 } 821 wantcont = FALSE; 822 for (num = 1; ; ++num) { 823 eat(name, num); 824 if (fgets(buf, (int) sizeof buf, fp) != buf) 825 break; 826 cp = strchr(buf, '\n'); 827 if (cp == NULL) { 828 error(_("line too long")); 829 (void) exit(EXIT_FAILURE); 830 } 831 *cp = '\0'; 832 fields = getfields(buf); 833 nfields = 0; 834 while (fields[nfields] != NULL) { 835 static char nada; 836 837 if (strcmp(fields[nfields], "-") == 0) 838 fields[nfields] = &nada; 839 ++nfields; 840 } 841 if (nfields == 0) { 842 /* nothing to do */ 843 } else if (wantcont) { 844 wantcont = inzcont(fields, nfields); 845 } else { 846 lp = byword(fields[0], line_codes); 847 if (lp == NULL) 848 error(_("input line of unknown type")); 849 else switch ((int) (lp->l_value)) { 850 case LC_RULE: 851 inrule(fields, nfields); 852 wantcont = FALSE; 853 break; 854 case LC_ZONE: 855 wantcont = inzone(fields, nfields); 856 break; 857 case LC_LINK: 858 inlink(fields, nfields); 859 wantcont = FALSE; 860 break; 861 case LC_LEAP: 862 if (name != leapsec) 863 (void) fprintf(stderr, 864 _("%s: Leap line in non leap seconds file %s\n"), 865 progname, name); 866 else inleap(fields, nfields); 867 wantcont = FALSE; 868 break; 869 default: /* "cannot happen" */ 870 (void) fprintf(stderr, 871 _("%s: panic: Invalid l_value %d\n"), 872 progname, lp->l_value); 873 (void) exit(EXIT_FAILURE); 874 } 875 } 876 ifree((char *) fields); 877 } 878 if (ferror(fp)) { 879 (void) fprintf(stderr, _("%s: Error reading %s\n"), 880 progname, filename); 881 (void) exit(EXIT_FAILURE); 882 } 883 if (fp != stdin && fclose(fp)) { 884 const char *e = strerror(errno); 885 886 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), 887 progname, filename, e); 888 (void) exit(EXIT_FAILURE); 889 } 890 if (wantcont) 891 error(_("expected continuation line not found")); 892 } 893 894 /* 895 ** Convert a string of one of the forms 896 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss 897 ** into a number of seconds. 898 ** A null string maps to zero. 899 ** Call error with errstring and return zero on errors. 900 */ 901 902 static long 903 gethms(string, errstring, signable) 904 const char * string; 905 const char * const errstring; 906 const int signable; 907 { 908 int hh, mm, ss, sign; 909 910 if (string == NULL || *string == '\0') 911 return 0; 912 if (!signable) 913 sign = 1; 914 else if (*string == '-') { 915 sign = -1; 916 ++string; 917 } else sign = 1; 918 if (sscanf(string, scheck(string, "%d"), &hh) == 1) 919 mm = ss = 0; 920 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) 921 ss = 0; 922 else if (sscanf(string, scheck(string, "%d:%d:%d"), 923 &hh, &mm, &ss) != 3) { 924 error(errstring); 925 return 0; 926 } 927 if ((hh < 0 || hh >= HOURSPERDAY || 928 mm < 0 || mm >= MINSPERHOUR || 929 ss < 0 || ss > SECSPERMIN) && 930 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) { 931 error(errstring); 932 return 0; 933 } 934 return eitol(sign) * 935 (eitol(hh * MINSPERHOUR + mm) * 936 eitol(SECSPERMIN) + eitol(ss)); 937 } 938 939 static void 940 inrule(fields, nfields) 941 register char ** const fields; 942 const int nfields; 943 { 944 static struct rule r; 945 946 if (nfields != RULE_FIELDS) { 947 error(_("wrong number of fields on Rule line")); 948 return; 949 } 950 if (*fields[RF_NAME] == '\0') { 951 error(_("nameless rule")); 952 return; 953 } 954 r.r_filename = filename; 955 r.r_linenum = linenum; 956 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); 957 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], 958 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); 959 r.r_name = ecpyalloc(fields[RF_NAME]); 960 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); 961 rules = (struct rule *) (void *) erealloc((char *) rules, 962 (int) ((nrules + 1) * sizeof *rules)); 963 rules[nrules++] = r; 964 } 965 966 static int 967 inzone(fields, nfields) 968 register char ** const fields; 969 const int nfields; 970 { 971 register int i; 972 static char * buf; 973 974 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { 975 error(_("wrong number of fields on Zone line")); 976 return FALSE; 977 } 978 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { 979 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); 980 (void) sprintf(buf, 981 _("\"Zone %s\" line and -l option are mutually exclusive"), 982 TZDEFAULT); 983 error(buf); 984 return FALSE; 985 } 986 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { 987 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); 988 (void) sprintf(buf, 989 _("\"Zone %s\" line and -p option are mutually exclusive"), 990 TZDEFRULES); 991 error(buf); 992 return FALSE; 993 } 994 for (i = 0; i < nzones; ++i) 995 if (zones[i].z_name != NULL && 996 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { 997 buf = erealloc(buf, (int) (132 + 998 strlen(fields[ZF_NAME]) + 999 strlen(zones[i].z_filename))); 1000 (void) sprintf(buf, 1001 _("duplicate zone name %s (file \"%s\", line %d)"), 1002 fields[ZF_NAME], 1003 zones[i].z_filename, 1004 zones[i].z_linenum); 1005 error(buf); 1006 return FALSE; 1007 } 1008 return inzsub(fields, nfields, FALSE); 1009 } 1010 1011 static int 1012 inzcont(fields, nfields) 1013 register char ** const fields; 1014 const int nfields; 1015 { 1016 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { 1017 error(_("wrong number of fields on Zone continuation line")); 1018 return FALSE; 1019 } 1020 return inzsub(fields, nfields, TRUE); 1021 } 1022 1023 static int 1024 inzsub(fields, nfields, iscont) 1025 register char ** const fields; 1026 const int nfields; 1027 const int iscont; 1028 { 1029 register char * cp; 1030 static struct zone z; 1031 register int i_gmtoff, i_rule, i_format; 1032 register int i_untilyear, i_untilmonth; 1033 register int i_untilday, i_untiltime; 1034 register int hasuntil; 1035 1036 if (iscont) { 1037 i_gmtoff = ZFC_GMTOFF; 1038 i_rule = ZFC_RULE; 1039 i_format = ZFC_FORMAT; 1040 i_untilyear = ZFC_TILYEAR; 1041 i_untilmonth = ZFC_TILMONTH; 1042 i_untilday = ZFC_TILDAY; 1043 i_untiltime = ZFC_TILTIME; 1044 z.z_name = NULL; 1045 } else { 1046 i_gmtoff = ZF_GMTOFF; 1047 i_rule = ZF_RULE; 1048 i_format = ZF_FORMAT; 1049 i_untilyear = ZF_TILYEAR; 1050 i_untilmonth = ZF_TILMONTH; 1051 i_untilday = ZF_TILDAY; 1052 i_untiltime = ZF_TILTIME; 1053 z.z_name = ecpyalloc(fields[ZF_NAME]); 1054 } 1055 z.z_filename = filename; 1056 z.z_linenum = linenum; 1057 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE); 1058 if ((cp = strchr(fields[i_format], '%')) != 0) { 1059 if (*++cp != 's' || strchr(cp, '%') != 0) { 1060 error(_("invalid abbreviation format")); 1061 return FALSE; 1062 } 1063 } 1064 z.z_rule = ecpyalloc(fields[i_rule]); 1065 z.z_format = ecpyalloc(fields[i_format]); 1066 hasuntil = nfields > i_untilyear; 1067 if (hasuntil) { 1068 z.z_untilrule.r_filename = filename; 1069 z.z_untilrule.r_linenum = linenum; 1070 rulesub(&z.z_untilrule, 1071 fields[i_untilyear], 1072 "only", 1073 "", 1074 (nfields > i_untilmonth) ? 1075 fields[i_untilmonth] : "Jan", 1076 (nfields > i_untilday) ? fields[i_untilday] : "1", 1077 (nfields > i_untiltime) ? fields[i_untiltime] : "0"); 1078 z.z_untiltime = rpytime(&z.z_untilrule, 1079 z.z_untilrule.r_loyear); 1080 if (iscont && nzones > 0 && 1081 z.z_untiltime > min_time && 1082 z.z_untiltime < max_time && 1083 zones[nzones - 1].z_untiltime > min_time && 1084 zones[nzones - 1].z_untiltime < max_time && 1085 zones[nzones - 1].z_untiltime >= z.z_untiltime) { 1086 error(_("Zone continuation line end time is not after end time of previous line")); 1087 return FALSE; 1088 } 1089 } 1090 zones = (struct zone *) (void *) erealloc((char *) zones, 1091 (int) ((nzones + 1) * sizeof *zones)); 1092 zones[nzones++] = z; 1093 /* 1094 ** If there was an UNTIL field on this line, 1095 ** there's more information about the zone on the next line. 1096 */ 1097 return hasuntil; 1098 } 1099 1100 static void 1101 inleap(fields, nfields) 1102 register char ** const fields; 1103 const int nfields; 1104 { 1105 register const char * cp; 1106 register const struct lookup * lp; 1107 register int i, j; 1108 int year, month, day; 1109 long dayoff, tod; 1110 time_t t; 1111 1112 if (nfields != LEAP_FIELDS) { 1113 error(_("wrong number of fields on Leap line")); 1114 return; 1115 } 1116 dayoff = 0; 1117 cp = fields[LP_YEAR]; 1118 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { 1119 /* 1120 * Leapin' Lizards! 1121 */ 1122 error(_("invalid leaping year")); 1123 return; 1124 } 1125 j = EPOCH_YEAR; 1126 while (j != year) { 1127 if (year > j) { 1128 i = len_years[isleap(j)]; 1129 ++j; 1130 } else { 1131 --j; 1132 i = -len_years[isleap(j)]; 1133 } 1134 dayoff = oadd(dayoff, eitol(i)); 1135 } 1136 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { 1137 error(_("invalid month name")); 1138 return; 1139 } 1140 month = lp->l_value; 1141 j = TM_JANUARY; 1142 while (j != month) { 1143 i = len_months[isleap(year)][j]; 1144 dayoff = oadd(dayoff, eitol(i)); 1145 ++j; 1146 } 1147 cp = fields[LP_DAY]; 1148 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || 1149 day <= 0 || day > len_months[isleap(year)][month]) { 1150 error(_("invalid day of month")); 1151 return; 1152 } 1153 dayoff = oadd(dayoff, eitol(day - 1)); 1154 if (dayoff < 0 && !TYPE_SIGNED(time_t)) { 1155 error(_("time before zero")); 1156 return; 1157 } 1158 if (dayoff < min_time / SECSPERDAY) { 1159 error(_("time too small")); 1160 return; 1161 } 1162 if (dayoff > max_time / SECSPERDAY) { 1163 error(_("time too large")); 1164 return; 1165 } 1166 t = (time_t) dayoff * SECSPERDAY; 1167 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1168 cp = fields[LP_CORR]; 1169 { 1170 register int positive; 1171 int count; 1172 1173 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1174 positive = FALSE; 1175 count = 1; 1176 } else if (strcmp(cp, "--") == 0) { 1177 positive = FALSE; 1178 count = 2; 1179 } else if (strcmp(cp, "+") == 0) { 1180 positive = TRUE; 1181 count = 1; 1182 } else if (strcmp(cp, "++") == 0) { 1183 positive = TRUE; 1184 count = 2; 1185 } else { 1186 error(_("illegal CORRECTION field on Leap line")); 1187 return; 1188 } 1189 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1190 error(_("illegal Rolling/Stationary field on Leap line")); 1191 return; 1192 } 1193 leapadd(tadd(t, tod), positive, lp->l_value, count); 1194 } 1195 } 1196 1197 static void 1198 inlink(fields, nfields) 1199 register char ** const fields; 1200 const int nfields; 1201 { 1202 struct link l; 1203 1204 if (nfields != LINK_FIELDS) { 1205 error(_("wrong number of fields on Link line")); 1206 return; 1207 } 1208 if (*fields[LF_FROM] == '\0') { 1209 error(_("blank FROM field on Link line")); 1210 return; 1211 } 1212 if (*fields[LF_TO] == '\0') { 1213 error(_("blank TO field on Link line")); 1214 return; 1215 } 1216 l.l_filename = filename; 1217 l.l_linenum = linenum; 1218 l.l_from = ecpyalloc(fields[LF_FROM]); 1219 l.l_to = ecpyalloc(fields[LF_TO]); 1220 links = (struct link *) (void *) erealloc((char *) links, 1221 (int) ((nlinks + 1) * sizeof *links)); 1222 links[nlinks++] = l; 1223 } 1224 1225 static void 1226 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1227 register struct rule * const rp; 1228 const char * const loyearp; 1229 const char * const hiyearp; 1230 const char * const typep; 1231 const char * const monthp; 1232 const char * const dayp; 1233 const char * const timep; 1234 { 1235 register const struct lookup * lp; 1236 register const char * cp; 1237 register char * dp; 1238 register char * ep; 1239 1240 if ((lp = byword(monthp, mon_names)) == NULL) { 1241 error(_("invalid month name")); 1242 return; 1243 } 1244 rp->r_month = lp->l_value; 1245 rp->r_todisstd = FALSE; 1246 rp->r_todisgmt = FALSE; 1247 dp = ecpyalloc(timep); 1248 if (*dp != '\0') { 1249 ep = dp + strlen(dp) - 1; 1250 switch (lowerit(*ep)) { 1251 case 's': /* Standard */ 1252 rp->r_todisstd = TRUE; 1253 rp->r_todisgmt = FALSE; 1254 *ep = '\0'; 1255 break; 1256 case 'w': /* Wall */ 1257 rp->r_todisstd = FALSE; 1258 rp->r_todisgmt = FALSE; 1259 *ep = '\0'; 1260 break; 1261 case 'g': /* Greenwich */ 1262 case 'u': /* Universal */ 1263 case 'z': /* Zulu */ 1264 rp->r_todisstd = TRUE; 1265 rp->r_todisgmt = TRUE; 1266 *ep = '\0'; 1267 break; 1268 } 1269 } 1270 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1271 ifree(dp); 1272 /* 1273 ** Year work. 1274 */ 1275 cp = loyearp; 1276 lp = byword(cp, begin_years); 1277 if (lp != NULL) switch ((int) lp->l_value) { 1278 case YR_MINIMUM: 1279 rp->r_loyear = INT_MIN; 1280 break; 1281 case YR_MAXIMUM: 1282 rp->r_loyear = INT_MAX; 1283 break; 1284 default: /* "cannot happen" */ 1285 (void) fprintf(stderr, 1286 _("%s: panic: Invalid l_value %d\n"), 1287 progname, lp->l_value); 1288 (void) exit(EXIT_FAILURE); 1289 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { 1290 error(_("invalid starting year")); 1291 return; 1292 } else if (noise) { 1293 if (rp->r_loyear < min_year_representable) 1294 warning(_("starting year too low to be represented")); 1295 else if (rp->r_loyear > max_year_representable) 1296 warning(_("starting year too high to be represented")); 1297 } 1298 cp = hiyearp; 1299 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1300 case YR_MINIMUM: 1301 rp->r_hiyear = INT_MIN; 1302 break; 1303 case YR_MAXIMUM: 1304 rp->r_hiyear = INT_MAX; 1305 break; 1306 case YR_ONLY: 1307 rp->r_hiyear = rp->r_loyear; 1308 break; 1309 default: /* "cannot happen" */ 1310 (void) fprintf(stderr, 1311 _("%s: panic: Invalid l_value %d\n"), 1312 progname, lp->l_value); 1313 (void) exit(EXIT_FAILURE); 1314 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1315 error(_("invalid ending year")); 1316 return; 1317 } else if (noise) { 1318 if (rp->r_loyear < min_year_representable) 1319 warning(_("ending year too low to be represented")); 1320 else if (rp->r_loyear > max_year_representable) 1321 warning(_("ending year too high to be represented")); 1322 } 1323 if (rp->r_loyear > rp->r_hiyear) { 1324 error(_("starting year greater than ending year")); 1325 return; 1326 } 1327 if (*typep == '\0') 1328 rp->r_yrtype = NULL; 1329 else { 1330 if (rp->r_loyear == rp->r_hiyear) { 1331 error(_("typed single year")); 1332 return; 1333 } 1334 rp->r_yrtype = ecpyalloc(typep); 1335 } 1336 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1337 min_year = rp->r_loyear; 1338 /* 1339 ** Day work. 1340 ** Accept things such as: 1341 ** 1 1342 ** last-Sunday 1343 ** Sun<=20 1344 ** Sun>=7 1345 */ 1346 dp = ecpyalloc(dayp); 1347 if ((lp = byword(dp, lasts)) != NULL) { 1348 rp->r_dycode = DC_DOWLEQ; 1349 rp->r_wday = lp->l_value; 1350 rp->r_dayofmonth = len_months[1][rp->r_month]; 1351 } else { 1352 if ((ep = strchr(dp, '<')) != 0) 1353 rp->r_dycode = DC_DOWLEQ; 1354 else if ((ep = strchr(dp, '>')) != 0) 1355 rp->r_dycode = DC_DOWGEQ; 1356 else { 1357 ep = dp; 1358 rp->r_dycode = DC_DOM; 1359 } 1360 if (rp->r_dycode != DC_DOM) { 1361 *ep++ = 0; 1362 if (*ep++ != '=') { 1363 error(_("invalid day of month")); 1364 ifree(dp); 1365 return; 1366 } 1367 if ((lp = byword(dp, wday_names)) == NULL) { 1368 error(_("invalid weekday name")); 1369 ifree(dp); 1370 return; 1371 } 1372 rp->r_wday = lp->l_value; 1373 } 1374 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1375 rp->r_dayofmonth <= 0 || 1376 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1377 error(_("invalid day of month")); 1378 ifree(dp); 1379 return; 1380 } 1381 } 1382 ifree(dp); 1383 } 1384 1385 static void 1386 convert(val, buf) 1387 const long val; 1388 char * const buf; 1389 { 1390 register int i; 1391 register long shift; 1392 1393 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1394 buf[i] = val >> shift; 1395 } 1396 1397 static void 1398 puttzcode(val, fp) 1399 const long val; 1400 FILE * const fp; 1401 { 1402 char buf[4]; 1403 1404 convert(val, buf); 1405 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1406 } 1407 1408 static int 1409 atcomp(avp, bvp) 1410 void * avp; 1411 void * bvp; 1412 { 1413 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) 1414 return -1; 1415 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) 1416 return 1; 1417 else return 0; 1418 } 1419 1420 static void 1421 writezone(name) 1422 const char * const name; 1423 { 1424 register FILE * fp; 1425 register int i, j; 1426 static char * fullname; 1427 static struct tzhead tzh; 1428 time_t ats[TZ_MAX_TIMES]; 1429 unsigned char types[TZ_MAX_TIMES]; 1430 1431 /* 1432 ** Sort. 1433 */ 1434 if (timecnt > 1) 1435 (void) qsort((void *) attypes, (size_t) timecnt, 1436 (size_t) sizeof *attypes, atcomp); 1437 /* 1438 ** Optimize. 1439 */ 1440 { 1441 int fromi; 1442 int toi; 1443 1444 toi = 0; 1445 fromi = 0; 1446 while (fromi < timecnt && attypes[fromi].at < min_time) 1447 ++fromi; 1448 if (isdsts[0] == 0) 1449 while (fromi < timecnt && attypes[fromi].type == 0) 1450 ++fromi; /* handled by default rule */ 1451 for ( ; fromi < timecnt; ++fromi) { 1452 if (toi != 0 1453 && ((attypes[fromi].at 1454 + gmtoffs[attypes[toi - 1].type]) 1455 <= (attypes[toi - 1].at 1456 + gmtoffs[toi == 1 ? 0 1457 : attypes[toi - 2].type]))) { 1458 attypes[toi - 1].type = attypes[fromi].type; 1459 continue; 1460 } 1461 if (toi == 0 || 1462 attypes[toi - 1].type != attypes[fromi].type) 1463 attypes[toi++] = attypes[fromi]; 1464 } 1465 timecnt = toi; 1466 } 1467 /* 1468 ** Transfer. 1469 */ 1470 for (i = 0; i < timecnt; ++i) { 1471 ats[i] = attypes[i].at; 1472 types[i] = attypes[i].type; 1473 } 1474 fullname = erealloc(fullname, 1475 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1476 (void) sprintf(fullname, "%s/%s", directory, name); 1477 /* 1478 ** Remove old file, if any, to snap links. 1479 */ 1480 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { 1481 const char *e = strerror(errno); 1482 1483 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), 1484 progname, fullname, e); 1485 (void) exit(EXIT_FAILURE); 1486 } 1487 if ((fp = fopen(fullname, "wb")) == NULL) { 1488 if (mkdirs(fullname) != 0) 1489 (void) exit(EXIT_FAILURE); 1490 if ((fp = fopen(fullname, "wb")) == NULL) { 1491 const char *e = strerror(errno); 1492 1493 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), 1494 progname, fullname, e); 1495 (void) exit(EXIT_FAILURE); 1496 } 1497 } 1498 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1499 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1500 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1501 convert(eitol(timecnt), tzh.tzh_timecnt); 1502 convert(eitol(typecnt), tzh.tzh_typecnt); 1503 convert(eitol(charcnt), tzh.tzh_charcnt); 1504 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); 1505 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1506 DO(tzh_magic); 1507 DO(tzh_reserved); 1508 DO(tzh_ttisgmtcnt); 1509 DO(tzh_ttisstdcnt); 1510 DO(tzh_leapcnt); 1511 DO(tzh_timecnt); 1512 DO(tzh_typecnt); 1513 DO(tzh_charcnt); 1514 #undef DO 1515 for (i = 0; i < timecnt; ++i) { 1516 j = leapcnt; 1517 while (--j >= 0) 1518 if (ats[i] >= trans[j]) { 1519 ats[i] = tadd(ats[i], corr[j]); 1520 break; 1521 } 1522 puttzcode((long) ats[i], fp); 1523 } 1524 if (timecnt > 0) 1525 (void) fwrite((void *) types, (size_t) sizeof types[0], 1526 (size_t) timecnt, fp); 1527 for (i = 0; i < typecnt; ++i) { 1528 puttzcode((long) gmtoffs[i], fp); 1529 (void) putc(isdsts[i], fp); 1530 (void) putc(abbrinds[i], fp); 1531 } 1532 if (charcnt != 0) 1533 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1534 (size_t) charcnt, fp); 1535 for (i = 0; i < leapcnt; ++i) { 1536 if (roll[i]) { 1537 if (timecnt == 0 || trans[i] < ats[0]) { 1538 j = 0; 1539 while (isdsts[j]) 1540 if (++j >= typecnt) { 1541 j = 0; 1542 break; 1543 } 1544 } else { 1545 j = 1; 1546 while (j < timecnt && trans[i] >= ats[j]) 1547 ++j; 1548 j = types[j - 1]; 1549 } 1550 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1551 } else puttzcode((long) trans[i], fp); 1552 puttzcode((long) corr[i], fp); 1553 } 1554 for (i = 0; i < typecnt; ++i) 1555 (void) putc(ttisstds[i], fp); 1556 for (i = 0; i < typecnt; ++i) 1557 (void) putc(ttisgmts[i], fp); 1558 if (ferror(fp) || fclose(fp)) { 1559 (void) fprintf(stderr, _("%s: Error writing %s\n"), 1560 progname, fullname); 1561 (void) exit(EXIT_FAILURE); 1562 } 1563 } 1564 1565 static void 1566 doabbr(abbr, format, letters, isdst) 1567 char * const abbr; 1568 const char * const format; 1569 const char * const letters; 1570 const int isdst; 1571 { 1572 if (strchr(format, '/') == NULL) { 1573 if (letters == NULL) 1574 (void) strcpy(abbr, format); 1575 else (void) sprintf(abbr, format, letters); 1576 } else if (isdst) 1577 (void) strcpy(abbr, strchr(format, '/') + 1); 1578 else { 1579 (void) strcpy(abbr, format); 1580 *strchr(abbr, '/') = '\0'; 1581 } 1582 } 1583 1584 static void 1585 outzone(zpfirst, zonecount) 1586 const struct zone * const zpfirst; 1587 const int zonecount; 1588 { 1589 register const struct zone * zp; 1590 register struct rule * rp; 1591 register int i, j; 1592 register int usestart, useuntil; 1593 register time_t starttime, untiltime; 1594 register long gmtoff; 1595 register long stdoff; 1596 register int year; 1597 register long startoff; 1598 register int startttisstd; 1599 register int startttisgmt; 1600 register int type; 1601 char startbuf[BUFSIZ]; 1602 1603 INITIALIZE(untiltime); 1604 INITIALIZE(starttime); 1605 /* 1606 ** Now. . .finally. . .generate some useful data! 1607 */ 1608 timecnt = 0; 1609 typecnt = 0; 1610 charcnt = 0; 1611 /* 1612 ** Thanks to Earl Chew (earl (at) dnd.icp.nec.com.au) 1613 ** for noting the need to unconditionally initialize startttisstd. 1614 */ 1615 startttisstd = FALSE; 1616 startttisgmt = FALSE; 1617 for (i = 0; i < zonecount; ++i) { 1618 /* 1619 ** A guess that may well be corrected later. 1620 */ 1621 stdoff = 0; 1622 zp = &zpfirst[i]; 1623 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1624 useuntil = i < (zonecount - 1); 1625 if (useuntil && zp->z_untiltime <= min_time) 1626 continue; 1627 gmtoff = zp->z_gmtoff; 1628 eat(zp->z_filename, zp->z_linenum); 1629 *startbuf = '\0'; 1630 startoff = zp->z_gmtoff; 1631 if (zp->z_nrules == 0) { 1632 stdoff = zp->z_stdoff; 1633 doabbr(startbuf, zp->z_format, 1634 (char *) NULL, stdoff != 0); 1635 type = addtype(oadd(zp->z_gmtoff, stdoff), 1636 startbuf, stdoff != 0, startttisstd, 1637 startttisgmt); 1638 if (usestart) { 1639 addtt(starttime, type); 1640 usestart = FALSE; 1641 } else if (stdoff != 0) 1642 addtt(min_time, type); 1643 } else for (year = min_year; year <= max_year; ++year) { 1644 if (useuntil && year > zp->z_untilrule.r_hiyear) 1645 break; 1646 /* 1647 ** Mark which rules to do in the current year. 1648 ** For those to do, calculate rpytime(rp, year); 1649 */ 1650 for (j = 0; j < zp->z_nrules; ++j) { 1651 rp = &zp->z_rules[j]; 1652 eats(zp->z_filename, zp->z_linenum, 1653 rp->r_filename, rp->r_linenum); 1654 rp->r_todo = year >= rp->r_loyear && 1655 year <= rp->r_hiyear && 1656 yearistype(year, rp->r_yrtype); 1657 if (rp->r_todo) 1658 rp->r_temp = rpytime(rp, year); 1659 } 1660 for ( ; ; ) { 1661 register int k; 1662 register time_t jtime, ktime; 1663 register long offset; 1664 char buf[BUFSIZ]; 1665 1666 INITIALIZE(ktime); 1667 if (useuntil) { 1668 /* 1669 ** Turn untiltime into UTC 1670 ** assuming the current gmtoff and 1671 ** stdoff values. 1672 */ 1673 untiltime = zp->z_untiltime; 1674 if (!zp->z_untilrule.r_todisgmt) 1675 untiltime = tadd(untiltime, 1676 -gmtoff); 1677 if (!zp->z_untilrule.r_todisstd) 1678 untiltime = tadd(untiltime, 1679 -stdoff); 1680 } 1681 /* 1682 ** Find the rule (of those to do, if any) 1683 ** that takes effect earliest in the year. 1684 */ 1685 k = -1; 1686 for (j = 0; j < zp->z_nrules; ++j) { 1687 rp = &zp->z_rules[j]; 1688 if (!rp->r_todo) 1689 continue; 1690 eats(zp->z_filename, zp->z_linenum, 1691 rp->r_filename, rp->r_linenum); 1692 offset = rp->r_todisgmt ? 0 : gmtoff; 1693 if (!rp->r_todisstd) 1694 offset = oadd(offset, stdoff); 1695 jtime = rp->r_temp; 1696 if (jtime == min_time || 1697 jtime == max_time) 1698 continue; 1699 jtime = tadd(jtime, -offset); 1700 if (k < 0 || jtime < ktime) { 1701 k = j; 1702 ktime = jtime; 1703 } 1704 } 1705 if (k < 0) 1706 break; /* go on to next year */ 1707 rp = &zp->z_rules[k]; 1708 rp->r_todo = FALSE; 1709 if (useuntil && ktime >= untiltime) 1710 break; 1711 stdoff = rp->r_stdoff; 1712 if (usestart && ktime == starttime) 1713 usestart = FALSE; 1714 if (usestart) { 1715 if (ktime < starttime) { 1716 startoff = oadd(zp->z_gmtoff, 1717 stdoff); 1718 doabbr(startbuf, zp->z_format, 1719 rp->r_abbrvar, 1720 rp->r_stdoff != 0); 1721 continue; 1722 } 1723 if (*startbuf == '\0' && 1724 startoff == oadd(zp->z_gmtoff, 1725 stdoff)) { 1726 doabbr(startbuf, zp->z_format, 1727 rp->r_abbrvar, 1728 rp->r_stdoff != 0); 1729 } 1730 } 1731 eats(zp->z_filename, zp->z_linenum, 1732 rp->r_filename, rp->r_linenum); 1733 doabbr(buf, zp->z_format, rp->r_abbrvar, 1734 rp->r_stdoff != 0); 1735 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1736 type = addtype(offset, buf, rp->r_stdoff != 0, 1737 rp->r_todisstd, rp->r_todisgmt); 1738 addtt(ktime, type); 1739 } 1740 } 1741 if (usestart) { 1742 if (*startbuf == '\0' && 1743 zp->z_format != NULL && 1744 strchr(zp->z_format, '%') == NULL && 1745 strchr(zp->z_format, '/') == NULL) 1746 (void) strcpy(startbuf, zp->z_format); 1747 eat(zp->z_filename, zp->z_linenum); 1748 if (*startbuf == '\0') 1749 error(_("can't determine time zone abbreviation to use just after until time")); 1750 else addtt(starttime, 1751 addtype(startoff, startbuf, 1752 startoff != zp->z_gmtoff, 1753 startttisstd, 1754 startttisgmt)); 1755 } 1756 /* 1757 ** Now we may get to set starttime for the next zone line. 1758 */ 1759 if (useuntil) { 1760 startttisstd = zp->z_untilrule.r_todisstd; 1761 startttisgmt = zp->z_untilrule.r_todisgmt; 1762 starttime = zp->z_untiltime; 1763 if (!startttisstd) 1764 starttime = tadd(starttime, -stdoff); 1765 if (!startttisgmt) 1766 starttime = tadd(starttime, -gmtoff); 1767 } 1768 } 1769 writezone(zpfirst->z_name); 1770 } 1771 1772 static void 1773 addtt(starttime, type) 1774 const time_t starttime; 1775 int type; 1776 { 1777 if (starttime <= min_time || 1778 (timecnt == 1 && attypes[0].at < min_time)) { 1779 gmtoffs[0] = gmtoffs[type]; 1780 isdsts[0] = isdsts[type]; 1781 ttisstds[0] = ttisstds[type]; 1782 ttisgmts[0] = ttisgmts[type]; 1783 if (abbrinds[type] != 0) 1784 (void) strcpy(chars, &chars[abbrinds[type]]); 1785 abbrinds[0] = 0; 1786 charcnt = strlen(chars) + 1; 1787 typecnt = 1; 1788 timecnt = 0; 1789 type = 0; 1790 } 1791 if (timecnt >= TZ_MAX_TIMES) { 1792 error(_("too many transitions?!")); 1793 (void) exit(EXIT_FAILURE); 1794 } 1795 attypes[timecnt].at = starttime; 1796 attypes[timecnt].type = type; 1797 ++timecnt; 1798 } 1799 1800 static int 1801 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1802 const long gmtoff; 1803 const char * const abbr; 1804 const int isdst; 1805 const int ttisstd; 1806 const int ttisgmt; 1807 { 1808 register int i, j; 1809 1810 if (isdst != TRUE && isdst != FALSE) { 1811 error(_("internal error - addtype called with bad isdst")); 1812 (void) exit(EXIT_FAILURE); 1813 } 1814 if (ttisstd != TRUE && ttisstd != FALSE) { 1815 error(_("internal error - addtype called with bad ttisstd")); 1816 (void) exit(EXIT_FAILURE); 1817 } 1818 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1819 error(_("internal error - addtype called with bad ttisgmt")); 1820 (void) exit(EXIT_FAILURE); 1821 } 1822 /* 1823 ** See if there's already an entry for this zone type. 1824 ** If so, just return its index. 1825 */ 1826 for (i = 0; i < typecnt; ++i) { 1827 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1828 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1829 ttisstd == ttisstds[i] && 1830 ttisgmt == ttisgmts[i]) 1831 return i; 1832 } 1833 /* 1834 ** There isn't one; add a new one, unless there are already too 1835 ** many. 1836 */ 1837 if (typecnt >= TZ_MAX_TYPES) { 1838 error(_("too many local time types")); 1839 (void) exit(EXIT_FAILURE); 1840 } 1841 gmtoffs[i] = gmtoff; 1842 isdsts[i] = isdst; 1843 ttisstds[i] = ttisstd; 1844 ttisgmts[i] = ttisgmt; 1845 1846 for (j = 0; j < charcnt; ++j) 1847 if (strcmp(&chars[j], abbr) == 0) 1848 break; 1849 if (j == charcnt) 1850 newabbr(abbr); 1851 abbrinds[i] = j; 1852 ++typecnt; 1853 return i; 1854 } 1855 1856 static void 1857 leapadd(t, positive, rolling, count) 1858 const time_t t; 1859 const int positive; 1860 const int rolling; 1861 int count; 1862 { 1863 register int i, j; 1864 1865 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1866 error(_("too many leap seconds")); 1867 (void) exit(EXIT_FAILURE); 1868 } 1869 for (i = 0; i < leapcnt; ++i) 1870 if (t <= trans[i]) { 1871 if (t == trans[i]) { 1872 error(_("repeated leap second moment")); 1873 (void) exit(EXIT_FAILURE); 1874 } 1875 break; 1876 } 1877 do { 1878 for (j = leapcnt; j > i; --j) { 1879 trans[j] = trans[j - 1]; 1880 corr[j] = corr[j - 1]; 1881 roll[j] = roll[j - 1]; 1882 } 1883 trans[i] = t; 1884 corr[i] = positive ? 1L : eitol(-count); 1885 roll[i] = rolling; 1886 ++leapcnt; 1887 } while (positive && --count != 0); 1888 } 1889 1890 static void 1891 adjleap P((void)) 1892 { 1893 register int i; 1894 register long last = 0; 1895 1896 /* 1897 ** propagate leap seconds forward 1898 */ 1899 for (i = 0; i < leapcnt; ++i) { 1900 trans[i] = tadd(trans[i], last); 1901 last = corr[i] += last; 1902 } 1903 } 1904 1905 static int 1906 yearistype(year, type) 1907 const int year; 1908 const char * const type; 1909 { 1910 static char * buf; 1911 int result; 1912 1913 if (type == NULL || *type == '\0') 1914 return TRUE; 1915 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1916 (void) sprintf(buf, "%s %d %s", yitcommand, year, type); 1917 result = system(buf); 1918 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) { 1919 case 0: 1920 return TRUE; 1921 case 1: 1922 return FALSE; 1923 } 1924 error(_("Wild result from command execution")); 1925 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), 1926 progname, buf, result); 1927 for ( ; ; ) 1928 (void) exit(EXIT_FAILURE); 1929 } 1930 1931 static int 1932 lowerit(a) 1933 int a; 1934 { 1935 a = (unsigned char) a; 1936 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1937 } 1938 1939 static int 1940 ciequal(ap, bp) /* case-insensitive equality */ 1941 register const char * ap; 1942 register const char * bp; 1943 { 1944 while (lowerit(*ap) == lowerit(*bp++)) 1945 if (*ap++ == '\0') 1946 return TRUE; 1947 return FALSE; 1948 } 1949 1950 static int 1951 itsabbr(abbr, word) 1952 register const char * abbr; 1953 register const char * word; 1954 { 1955 if (lowerit(*abbr) != lowerit(*word)) 1956 return FALSE; 1957 ++word; 1958 while (*++abbr != '\0') 1959 do { 1960 if (*word == '\0') 1961 return FALSE; 1962 } while (lowerit(*word++) != lowerit(*abbr)); 1963 return TRUE; 1964 } 1965 1966 static const struct lookup * 1967 byword(word, table) 1968 register const char * const word; 1969 register const struct lookup * const table; 1970 { 1971 register const struct lookup * foundlp; 1972 register const struct lookup * lp; 1973 1974 if (word == NULL || table == NULL) 1975 return NULL; 1976 /* 1977 ** Look for exact match. 1978 */ 1979 for (lp = table; lp->l_word != NULL; ++lp) 1980 if (ciequal(word, lp->l_word)) 1981 return lp; 1982 /* 1983 ** Look for inexact match. 1984 */ 1985 foundlp = NULL; 1986 for (lp = table; lp->l_word != NULL; ++lp) 1987 if (itsabbr(word, lp->l_word)) { 1988 if (foundlp == NULL) 1989 foundlp = lp; 1990 else return NULL; /* multiple inexact matches */ 1991 } 1992 return foundlp; 1993 } 1994 1995 static char ** 1996 getfields(cp) 1997 register char * cp; 1998 { 1999 register char * dp; 2000 register char ** array; 2001 register int nsubs; 2002 2003 if (cp == NULL) 2004 return NULL; 2005 array = (char **) (void *) 2006 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 2007 nsubs = 0; 2008 for ( ; ; ) { 2009 while (isascii(*cp) && isspace((unsigned char) *cp)) 2010 ++cp; 2011 if (*cp == '\0' || *cp == '#') 2012 break; 2013 array[nsubs++] = dp = cp; 2014 do { 2015 if ((*dp = *cp++) != '"') 2016 ++dp; 2017 else while ((*dp = *cp++) != '"') 2018 if (*dp != '\0') 2019 ++dp; 2020 else error(_("Odd number of quotation marks")); 2021 } while (*cp != '\0' && *cp != '#' && 2022 (!isascii(*cp) || !isspace((unsigned char) *cp))); 2023 if (isascii(*cp) && isspace((unsigned char) *cp)) 2024 ++cp; 2025 *dp = '\0'; 2026 } 2027 array[nsubs] = NULL; 2028 return array; 2029 } 2030 2031 static long 2032 oadd(t1, t2) 2033 const long t1; 2034 const long t2; 2035 { 2036 register long t; 2037 2038 t = t1 + t2; 2039 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2040 error(_("time overflow")); 2041 (void) exit(EXIT_FAILURE); 2042 } 2043 return t; 2044 } 2045 2046 static time_t 2047 tadd(t1, t2) 2048 const time_t t1; 2049 const long t2; 2050 { 2051 register time_t t; 2052 2053 if (t1 == max_time && t2 > 0) 2054 return max_time; 2055 if (t1 == min_time && t2 < 0) 2056 return min_time; 2057 t = t1 + t2; 2058 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2059 error(_("time overflow")); 2060 (void) exit(EXIT_FAILURE); 2061 } 2062 return t; 2063 } 2064 2065 /* 2066 ** Given a rule, and a year, compute the date - in seconds since January 1, 2067 ** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2068 */ 2069 2070 static time_t 2071 rpytime(rp, wantedy) 2072 register const struct rule * const rp; 2073 register const int wantedy; 2074 { 2075 register int y, m, i; 2076 register long dayoff; /* with a nod to Margaret O. */ 2077 register time_t t; 2078 2079 if (wantedy == INT_MIN) 2080 return min_time; 2081 if (wantedy == INT_MAX) 2082 return max_time; 2083 dayoff = 0; 2084 m = TM_JANUARY; 2085 y = EPOCH_YEAR; 2086 while (wantedy != y) { 2087 if (wantedy > y) { 2088 i = len_years[isleap(y)]; 2089 ++y; 2090 } else { 2091 --y; 2092 i = -len_years[isleap(y)]; 2093 } 2094 dayoff = oadd(dayoff, eitol(i)); 2095 } 2096 while (m != rp->r_month) { 2097 i = len_months[isleap(y)][m]; 2098 dayoff = oadd(dayoff, eitol(i)); 2099 ++m; 2100 } 2101 i = rp->r_dayofmonth; 2102 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2103 if (rp->r_dycode == DC_DOWLEQ) 2104 --i; 2105 else { 2106 error(_("use of 2/29 in non leap-year")); 2107 (void) exit(EXIT_FAILURE); 2108 } 2109 } 2110 --i; 2111 dayoff = oadd(dayoff, eitol(i)); 2112 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2113 register long wday; 2114 2115 #define LDAYSPERWEEK ((long) DAYSPERWEEK) 2116 wday = eitol(EPOCH_WDAY); 2117 /* 2118 ** Don't trust mod of negative numbers. 2119 */ 2120 if (dayoff >= 0) 2121 wday = (wday + dayoff) % LDAYSPERWEEK; 2122 else { 2123 wday -= ((-dayoff) % LDAYSPERWEEK); 2124 if (wday < 0) 2125 wday += LDAYSPERWEEK; 2126 } 2127 while (wday != eitol(rp->r_wday)) 2128 if (rp->r_dycode == DC_DOWGEQ) { 2129 dayoff = oadd(dayoff, (long) 1); 2130 if (++wday >= LDAYSPERWEEK) 2131 wday = 0; 2132 ++i; 2133 } else { 2134 dayoff = oadd(dayoff, (long) -1); 2135 if (--wday < 0) 2136 wday = LDAYSPERWEEK - 1; 2137 --i; 2138 } 2139 if (i < 0 || i >= len_months[isleap(y)][m]) { 2140 error(_("no day in month matches rule")); 2141 (void) exit(EXIT_FAILURE); 2142 } 2143 } 2144 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2145 return min_time; 2146 if (dayoff < min_time / SECSPERDAY) 2147 return min_time; 2148 if (dayoff > max_time / SECSPERDAY) 2149 return max_time; 2150 t = (time_t) dayoff * SECSPERDAY; 2151 return tadd(t, rp->r_tod); 2152 } 2153 2154 static void 2155 newabbr(string) 2156 const char * const string; 2157 { 2158 register int i; 2159 2160 i = strlen(string) + 1; 2161 if (charcnt + i > TZ_MAX_CHARS) { 2162 error(_("too many, or too long, time zone abbreviations")); 2163 (void) exit(EXIT_FAILURE); 2164 } 2165 (void) strcpy(&chars[charcnt], string); 2166 charcnt += eitol(i); 2167 } 2168 2169 static int 2170 mkdirs(argname) 2171 char * const argname; 2172 { 2173 register char * name; 2174 register char * cp; 2175 2176 if (argname == NULL || *argname == '\0') 2177 return 0; 2178 cp = name = ecpyalloc(argname); 2179 while ((cp = strchr(cp + 1, '/')) != 0) { 2180 *cp = '\0'; 2181 #ifndef unix 2182 /* 2183 ** DOS drive specifier? 2184 */ 2185 if (isalpha((unsigned char) name[0]) && 2186 name[1] == ':' && name[2] == '\0') { 2187 *cp = '/'; 2188 continue; 2189 } 2190 #endif /* !defined unix */ 2191 if (!itsdir(name)) { 2192 /* 2193 ** It doesn't seem to exist, so we try to create it. 2194 ** Creation may fail because of the directory being 2195 ** created by some other multiprocessor, so we get 2196 ** to do extra checking. 2197 */ 2198 if (mkdir(name, MKDIR_UMASK) != 0) { 2199 const char *e = strerror(errno); 2200 2201 if (errno != EEXIST || !itsdir(name)) { 2202 (void) fprintf(stderr, 2203 _("%s: Can't create directory %s: %s\n"), 2204 progname, name, e); 2205 ifree(name); 2206 return -1; 2207 } 2208 } 2209 } 2210 *cp = '/'; 2211 } 2212 ifree(name); 2213 return 0; 2214 } 2215 2216 static long 2217 eitol(i) 2218 const int i; 2219 { 2220 long l; 2221 2222 l = i; 2223 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { 2224 (void) fprintf(stderr, 2225 _("%s: %d did not sign extend correctly\n"), 2226 progname, i); 2227 (void) exit(EXIT_FAILURE); 2228 } 2229 return l; 2230 } 2231 2232 /* 2233 ** UNIX was a registered trademark of UNIX System Laboratories in 1993. 2234 */ 2235
Indexes created Thu Oct 02 14:10:14 GMT 2025