zic.c revision 1.16
1 /* $NetBSD: zic.c,v 1.16 1999/11/10 20:32:31 kleink Exp $ */ 2 3 #include <sys/cdefs.h> 4 #ifndef lint 5 #ifndef NOID 6 #if 0 7 static char elsieid[] = "@(#)zic.c 7.100"; 8 #else 9 __RCSID("$NetBSD: zic.c,v 1.16 1999/11/10 20:32:31 kleink Exp $"); 10 #endif 11 #endif /* !defined NOID */ 12 #endif /* !defined lint */ 13 14 #include "private.h" 15 #include "locale.h" 16 #include "tzfile.h" 17 #include "sys/stat.h" /* for umask manifest constants */ 18 #include "unistd.h" 19 20 /* 21 ** On some ancient hosts, predicates like `isspace(C)' are defined 22 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, 23 ** which says they are defined only if C == ((unsigned char) C) || C == EOF. 24 ** Neither the C Standard nor Posix require that `isascii' exist. 25 ** For portability, we check both ancient and modern requirements. 26 ** If isascii is not defined, the isascii check succeeds trivially. 27 */ 28 #include "ctype.h" 29 #ifndef isascii 30 #define isascii(x) 1 31 #endif 32 33 struct rule { 34 const char * r_filename; 35 int r_linenum; 36 const char * r_name; 37 38 int r_loyear; /* for example, 1986 */ 39 int r_hiyear; /* for example, 1986 */ 40 const char * r_yrtype; 41 42 int r_month; /* 0..11 */ 43 44 int r_dycode; /* see below */ 45 int r_dayofmonth; 46 int r_wday; 47 48 long r_tod; /* time from midnight */ 49 int r_todisstd; /* above is standard time if TRUE */ 50 /* or wall clock time if FALSE */ 51 int r_todisgmt; /* above is GMT if TRUE */ 52 /* or local time if FALSE */ 53 long r_stdoff; /* offset from standard time */ 54 const char * r_abbrvar; /* variable part of abbreviation */ 55 56 int r_todo; /* a rule to do (used in outzone) */ 57 time_t r_temp; /* used in outzone */ 58 }; 59 60 /* 61 ** r_dycode r_dayofmonth r_wday 62 */ 63 64 #define DC_DOM 0 /* 1..31 */ /* unused */ 65 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ 66 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ 67 68 struct zone { 69 const char * z_filename; 70 int z_linenum; 71 72 const char * z_name; 73 long z_gmtoff; 74 const char * z_rule; 75 const char * z_format; 76 77 long z_stdoff; 78 79 struct rule * z_rules; 80 int z_nrules; 81 82 struct rule z_untilrule; 83 time_t z_untiltime; 84 }; 85 86 extern int getopt P((int argc, char * const argv[], 87 const char * options)); 88 extern int link P((const char * fromname, const char * toname)); 89 extern char * optarg; 90 extern int optind; 91 92 static int atcomp P((const void *, const void *)); 93 static void addtt P((time_t starttime, int type)); 94 static int addtype P((long gmtoff, const char * abbr, int isdst, 95 int ttisstd, int ttisgmt)); 96 static void leapadd P((time_t t, int positive, int rolling, int count)); 97 static void adjleap P((void)); 98 static void associate P((void)); 99 static int ciequal P((const char * ap, const char * bp)); 100 static void convert P((long val, char * buf)); 101 static void dolink P((const char * fromfile, const char * tofile)); 102 static void doabbr P((char * abbr, int abbrlen, const char * format, 103 const char * letters, int isdst)); 104 static void eat P((const char * name, int num)); 105 static void eats P((const char * name, int num, 106 const char * rname, int rnum)); 107 static long eitol P((int i)); 108 static void error P((const char * message)); 109 static char ** getfields P((char * buf)); 110 static long gethms P((const char * string, const char * errstrng, 111 int signable)); 112 static void infile P((const char * filename)); 113 static void inleap P((char ** fields, int nfields)); 114 static void inlink P((char ** fields, int nfields)); 115 static void inrule P((char ** fields, int nfields)); 116 static int inzcont P((char ** fields, int nfields)); 117 static int inzone P((char ** fields, int nfields)); 118 static int inzsub P((char ** fields, int nfields, int iscont)); 119 static int itsabbr P((const char * abbr, const char * word)); 120 static int itsdir P((const char * name)); 121 static int lowerit P((int c)); 122 int main P((int, char **)); 123 static char * memcheck P((char * tocheck)); 124 static int mkdirs P((char * filename)); 125 static void newabbr P((const char * abbr)); 126 static long oadd P((long t1, long t2)); 127 static void outzone P((const struct zone * zp, int ntzones)); 128 static void puttzcode P((long code, FILE * fp)); 129 static int rcomp P((const void * leftp, const void * rightp)); 130 static time_t rpytime P((const struct rule * rp, int wantedy)); 131 static void rulesub P((struct rule * rp, 132 const char * loyearp, const char * hiyearp, 133 const char * typep, const char * monthp, 134 const char * dayp, const char * timep)); 135 static void setboundaries P((void)); 136 static time_t tadd P((time_t t1, long t2)); 137 static void usage P((void)); 138 static void warning P((const char * const)); 139 static void writezone P((const char * name)); 140 static int yearistype P((int year, const char * type)); 141 142 #if !(HAVE_STRERROR - 0) 143 static char * strerror P((int)); 144 #endif /* !(HAVE_STRERROR - 0) */ 145 146 static int charcnt; 147 static int errors; 148 static const char * filename; 149 static int leapcnt; 150 static int linenum; 151 static time_t max_time; 152 static int max_year; 153 static int max_year_representable; 154 static time_t min_time; 155 static int min_year; 156 static int min_year_representable; 157 static int noise; 158 static const char * rfilename; 159 static int rlinenum; 160 static const char * progname; 161 static int timecnt; 162 static int typecnt; 163 164 /* 165 ** Line codes. 166 */ 167 168 #define LC_RULE 0 169 #define LC_ZONE 1 170 #define LC_LINK 2 171 #define LC_LEAP 3 172 173 /* 174 ** Which fields are which on a Zone line. 175 */ 176 177 #define ZF_NAME 1 178 #define ZF_GMTOFF 2 179 #define ZF_RULE 3 180 #define ZF_FORMAT 4 181 #define ZF_TILYEAR 5 182 #define ZF_TILMONTH 6 183 #define ZF_TILDAY 7 184 #define ZF_TILTIME 8 185 #define ZONE_MINFIELDS 5 186 #define ZONE_MAXFIELDS 9 187 188 /* 189 ** Which fields are which on a Zone continuation line. 190 */ 191 192 #define ZFC_GMTOFF 0 193 #define ZFC_RULE 1 194 #define ZFC_FORMAT 2 195 #define ZFC_TILYEAR 3 196 #define ZFC_TILMONTH 4 197 #define ZFC_TILDAY 5 198 #define ZFC_TILTIME 6 199 #define ZONEC_MINFIELDS 3 200 #define ZONEC_MAXFIELDS 7 201 202 /* 203 ** Which files are which on a Rule line. 204 */ 205 206 #define RF_NAME 1 207 #define RF_LOYEAR 2 208 #define RF_HIYEAR 3 209 #define RF_COMMAND 4 210 #define RF_MONTH 5 211 #define RF_DAY 6 212 #define RF_TOD 7 213 #define RF_STDOFF 8 214 #define RF_ABBRVAR 9 215 #define RULE_FIELDS 10 216 217 /* 218 ** Which fields are which on a Link line. 219 */ 220 221 #define LF_FROM 1 222 #define LF_TO 2 223 #define LINK_FIELDS 3 224 225 /* 226 ** Which fields are which on a Leap line. 227 */ 228 229 #define LP_YEAR 1 230 #define LP_MONTH 2 231 #define LP_DAY 3 232 #define LP_TIME 4 233 #define LP_CORR 5 234 #define LP_ROLL 6 235 #define LEAP_FIELDS 7 236 237 /* 238 ** Year synonyms. 239 */ 240 241 #define YR_MINIMUM 0 242 #define YR_MAXIMUM 1 243 #define YR_ONLY 2 244 245 static struct rule * rules; 246 static int nrules; /* number of rules */ 247 248 static struct zone * zones; 249 static int nzones; /* number of zones */ 250 251 struct link { 252 const char * l_filename; 253 int l_linenum; 254 const char * l_from; 255 const char * l_to; 256 }; 257 258 static struct link * links; 259 static int nlinks; 260 261 struct lookup { 262 const char * l_word; 263 const int l_value; 264 }; 265 266 static struct lookup const * byword P((const char * string, 267 const struct lookup * lp)); 268 269 static struct lookup const line_codes[] = { 270 { "Rule", LC_RULE }, 271 { "Zone", LC_ZONE }, 272 { "Link", LC_LINK }, 273 { "Leap", LC_LEAP }, 274 { NULL, 0} 275 }; 276 277 static struct lookup const mon_names[] = { 278 { "January", TM_JANUARY }, 279 { "February", TM_FEBRUARY }, 280 { "March", TM_MARCH }, 281 { "April", TM_APRIL }, 282 { "May", TM_MAY }, 283 { "June", TM_JUNE }, 284 { "July", TM_JULY }, 285 { "August", TM_AUGUST }, 286 { "September", TM_SEPTEMBER }, 287 { "October", TM_OCTOBER }, 288 { "November", TM_NOVEMBER }, 289 { "December", TM_DECEMBER }, 290 { NULL, 0 } 291 }; 292 293 static struct lookup const wday_names[] = { 294 { "Sunday", TM_SUNDAY }, 295 { "Monday", TM_MONDAY }, 296 { "Tuesday", TM_TUESDAY }, 297 { "Wednesday", TM_WEDNESDAY }, 298 { "Thursday", TM_THURSDAY }, 299 { "Friday", TM_FRIDAY }, 300 { "Saturday", TM_SATURDAY }, 301 { NULL, 0 } 302 }; 303 304 static struct lookup const lasts[] = { 305 { "last-Sunday", TM_SUNDAY }, 306 { "last-Monday", TM_MONDAY }, 307 { "last-Tuesday", TM_TUESDAY }, 308 { "last-Wednesday", TM_WEDNESDAY }, 309 { "last-Thursday", TM_THURSDAY }, 310 { "last-Friday", TM_FRIDAY }, 311 { "last-Saturday", TM_SATURDAY }, 312 { NULL, 0 } 313 }; 314 315 static struct lookup const begin_years[] = { 316 { "minimum", YR_MINIMUM }, 317 { "maximum", YR_MAXIMUM }, 318 { NULL, 0 } 319 }; 320 321 static struct lookup const end_years[] = { 322 { "minimum", YR_MINIMUM }, 323 { "maximum", YR_MAXIMUM }, 324 { "only", YR_ONLY }, 325 { NULL, 0 } 326 }; 327 328 static struct lookup const leap_types[] = { 329 { "Rolling", TRUE }, 330 { "Stationary", FALSE }, 331 { NULL, 0 } 332 }; 333 334 static const int len_months[2][MONSPERYEAR] = { 335 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, 336 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } 337 }; 338 339 static const int len_years[2] = { 340 DAYSPERNYEAR, DAYSPERLYEAR 341 }; 342 343 static struct attype { 344 time_t at; 345 unsigned char type; 346 } attypes[TZ_MAX_TIMES]; 347 static long gmtoffs[TZ_MAX_TYPES]; 348 static char isdsts[TZ_MAX_TYPES]; 349 static unsigned char abbrinds[TZ_MAX_TYPES]; 350 static char ttisstds[TZ_MAX_TYPES]; 351 static char ttisgmts[TZ_MAX_TYPES]; 352 static char chars[TZ_MAX_CHARS]; 353 static time_t trans[TZ_MAX_LEAPS]; 354 static long corr[TZ_MAX_LEAPS]; 355 static char roll[TZ_MAX_LEAPS]; 356 357 /* 358 ** Memory allocation. 359 */ 360 361 static char * 362 memcheck(ptr) 363 char * const ptr; 364 { 365 if (ptr == NULL) { 366 const char *e = strerror(errno); 367 368 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"), 369 progname, e); 370 (void) exit(EXIT_FAILURE); 371 } 372 return ptr; 373 } 374 375 #define emalloc(size) memcheck(imalloc(size)) 376 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) 377 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) 378 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) 379 380 /* 381 ** Error handling. 382 */ 383 384 #if !(HAVE_STRERROR - 0) 385 static char * 386 strerror(errnum) 387 int errnum; 388 { 389 extern char * sys_errlist[]; 390 extern int sys_nerr; 391 392 return (errnum > 0 && errnum <= sys_nerr) ? 393 sys_errlist[errnum] : _("Unknown system error"); 394 } 395 #endif /* !(HAVE_STRERROR - 0) */ 396 397 static void 398 eats(name, num, rname, rnum) 399 const char * const name; 400 const int num; 401 const char * const rname; 402 const int rnum; 403 { 404 filename = name; 405 linenum = num; 406 rfilename = rname; 407 rlinenum = rnum; 408 } 409 410 static void 411 eat(name, num) 412 const char * const name; 413 const int num; 414 { 415 eats(name, num, (char *) NULL, -1); 416 } 417 418 static void 419 error(string) 420 const char * const string; 421 { 422 /* 423 ** Match the format of "cc" to allow sh users to 424 ** zic ... 2>&1 | error -t "*" -v 425 ** on BSD systems. 426 */ 427 (void) fprintf(stderr, _("\"%s\", line %d: %s"), 428 filename, linenum, string); 429 if (rfilename != NULL) 430 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), 431 rfilename, rlinenum); 432 (void) fprintf(stderr, "\n"); 433 ++errors; 434 } 435 436 static void 437 warning(string) 438 const char * const string; 439 { 440 char * cp; 441 442 cp = ecpyalloc(_("warning: ")); 443 cp = ecatalloc(cp, string); 444 error(cp); 445 ifree(cp); 446 --errors; 447 } 448 449 static void 450 usage P((void)) 451 { 452 (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), 453 progname, progname); 454 (void) exit(EXIT_FAILURE); 455 } 456 457 static const char * psxrules; 458 static const char * lcltime; 459 static const char * directory; 460 static const char * leapsec; 461 static const char * yitcommand; 462 static int sflag = FALSE; 463 464 int 465 main(argc, argv) 466 int argc; 467 char * argv[]; 468 { 469 register int i; 470 register int j; 471 register int c; 472 473 #ifdef _POSIX_VERSION 474 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); 475 #endif /* defined _POSIX_VERSION */ 476 #if HAVE_GETTEXT - 0 477 (void) setlocale(LC_MESSAGES, ""); 478 #ifdef TZ_DOMAINDIR 479 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); 480 #endif /* defined TEXTDOMAINDIR */ 481 (void) textdomain(TZ_DOMAIN); 482 #endif /* HAVE_GETTEXT - 0 */ 483 progname = argv[0]; 484 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) 485 switch (c) { 486 default: 487 usage(); 488 case 'd': 489 if (directory == NULL) 490 directory = optarg; 491 else { 492 (void) fprintf(stderr, 493 _("%s: More than one -d option specified\n"), 494 progname); 495 (void) exit(EXIT_FAILURE); 496 } 497 break; 498 case 'l': 499 if (lcltime == NULL) 500 lcltime = optarg; 501 else { 502 (void) fprintf(stderr, 503 _("%s: More than one -l option specified\n"), 504 progname); 505 (void) exit(EXIT_FAILURE); 506 } 507 break; 508 case 'p': 509 if (psxrules == NULL) 510 psxrules = optarg; 511 else { 512 (void) fprintf(stderr, 513 _("%s: More than one -p option specified\n"), 514 progname); 515 (void) exit(EXIT_FAILURE); 516 } 517 break; 518 case 'y': 519 if (yitcommand == NULL) 520 yitcommand = optarg; 521 else { 522 (void) fprintf(stderr, 523 _("%s: More than one -y option specified\n"), 524 progname); 525 (void) exit(EXIT_FAILURE); 526 } 527 break; 528 case 'L': 529 if (leapsec == NULL) 530 leapsec = optarg; 531 else { 532 (void) fprintf(stderr, 533 _("%s: More than one -L option specified\n"), 534 progname); 535 (void) exit(EXIT_FAILURE); 536 } 537 break; 538 case 'v': 539 noise = TRUE; 540 break; 541 case 's': 542 sflag = TRUE; 543 break; 544 } 545 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 546 usage(); /* usage message by request */ 547 if (directory == NULL) 548 directory = TZDIR; 549 if (yitcommand == NULL) 550 yitcommand = "yearistype"; 551 552 setboundaries(); 553 554 if (optind < argc && leapsec != NULL) { 555 infile(leapsec); 556 adjleap(); 557 } 558 559 for (i = optind; i < argc; ++i) 560 infile(argv[i]); 561 if (errors) 562 (void) exit(EXIT_FAILURE); 563 associate(); 564 for (i = 0; i < nzones; i = j) { 565 /* 566 ** Find the next non-continuation zone entry. 567 */ 568 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 569 continue; 570 outzone(&zones[i], j - i); 571 } 572 /* 573 ** Make links. 574 */ 575 for (i = 0; i < nlinks; ++i) { 576 eat(links[i].l_filename, links[i].l_linenum); 577 dolink(links[i].l_from, links[i].l_to); 578 } 579 if (lcltime != NULL) { 580 eat("command line", 1); 581 dolink(lcltime, TZDEFAULT); 582 } 583 if (psxrules != NULL) { 584 eat("command line", 1); 585 dolink(psxrules, TZDEFRULES); 586 } 587 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 588 } 589 590 static void 591 dolink(fromfile, tofile) 592 const char * const fromfile; 593 const char * const tofile; 594 { 595 register char * fromname; 596 register char * toname; 597 598 if (fromfile[0] == '/') 599 fromname = ecpyalloc(fromfile); 600 else { 601 fromname = ecpyalloc(directory); 602 fromname = ecatalloc(fromname, "/"); 603 fromname = ecatalloc(fromname, fromfile); 604 } 605 if (tofile[0] == '/') 606 toname = ecpyalloc(tofile); 607 else { 608 toname = ecpyalloc(directory); 609 toname = ecatalloc(toname, "/"); 610 toname = ecatalloc(toname, tofile); 611 } 612 /* 613 ** We get to be careful here since 614 ** there's a fair chance of root running us. 615 */ 616 if (!itsdir(toname)) 617 (void) remove(toname); 618 if (link(fromname, toname) != 0) { 619 int result; 620 621 if (mkdirs(toname) != 0) 622 (void) exit(EXIT_FAILURE); 623 624 result = link(fromname, toname); 625 #if (HAVE_SYMLINK - 0) 626 if (result != 0) { 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, /* XXX: sprintf is safe */ 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, /* XXX: sprintf is safe */ 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, /* XXX: sprintf is safe */ 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 t = (time_t) dayoff * SECSPERDAY; 1159 /* 1160 ** Cheap overflow check. 1161 */ 1162 if (t / SECSPERDAY != dayoff) { 1163 error(_("time overflow")); 1164 return; 1165 } 1166 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1167 cp = fields[LP_CORR]; 1168 { 1169 register int positive; 1170 int count; 1171 1172 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1173 positive = FALSE; 1174 count = 1; 1175 } else if (strcmp(cp, "--") == 0) { 1176 positive = FALSE; 1177 count = 2; 1178 } else if (strcmp(cp, "+") == 0) { 1179 positive = TRUE; 1180 count = 1; 1181 } else if (strcmp(cp, "++") == 0) { 1182 positive = TRUE; 1183 count = 2; 1184 } else { 1185 error(_("illegal CORRECTION field on Leap line")); 1186 return; 1187 } 1188 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1189 error(_("illegal Rolling/Stationary field on Leap line")); 1190 return; 1191 } 1192 leapadd(tadd(t, tod), positive, lp->l_value, count); 1193 } 1194 } 1195 1196 static void 1197 inlink(fields, nfields) 1198 register char ** const fields; 1199 const int nfields; 1200 { 1201 struct link l; 1202 1203 if (nfields != LINK_FIELDS) { 1204 error(_("wrong number of fields on Link line")); 1205 return; 1206 } 1207 if (*fields[LF_FROM] == '\0') { 1208 error(_("blank FROM field on Link line")); 1209 return; 1210 } 1211 if (*fields[LF_TO] == '\0') { 1212 error(_("blank TO field on Link line")); 1213 return; 1214 } 1215 l.l_filename = filename; 1216 l.l_linenum = linenum; 1217 l.l_from = ecpyalloc(fields[LF_FROM]); 1218 l.l_to = ecpyalloc(fields[LF_TO]); 1219 links = (struct link *) (void *) erealloc((char *) links, 1220 (int) ((nlinks + 1) * sizeof *links)); 1221 links[nlinks++] = l; 1222 } 1223 1224 static void 1225 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1226 register struct rule * const rp; 1227 const char * const loyearp; 1228 const char * const hiyearp; 1229 const char * const typep; 1230 const char * const monthp; 1231 const char * const dayp; 1232 const char * const timep; 1233 { 1234 register const struct lookup * lp; 1235 register const char * cp; 1236 register char * dp; 1237 register char * ep; 1238 1239 if ((lp = byword(monthp, mon_names)) == NULL) { 1240 error(_("invalid month name")); 1241 return; 1242 } 1243 rp->r_month = lp->l_value; 1244 rp->r_todisstd = FALSE; 1245 rp->r_todisgmt = FALSE; 1246 dp = ecpyalloc(timep); 1247 if (*dp != '\0') { 1248 ep = dp + strlen(dp) - 1; 1249 switch (lowerit(*ep)) { 1250 case 's': /* Standard */ 1251 rp->r_todisstd = TRUE; 1252 rp->r_todisgmt = FALSE; 1253 *ep = '\0'; 1254 break; 1255 case 'w': /* Wall */ 1256 rp->r_todisstd = FALSE; 1257 rp->r_todisgmt = FALSE; 1258 *ep = '\0'; 1259 break; 1260 case 'g': /* Greenwich */ 1261 case 'u': /* Universal */ 1262 case 'z': /* Zulu */ 1263 rp->r_todisstd = TRUE; 1264 rp->r_todisgmt = TRUE; 1265 *ep = '\0'; 1266 break; 1267 } 1268 } 1269 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1270 ifree(dp); 1271 /* 1272 ** Year work. 1273 */ 1274 cp = loyearp; 1275 lp = byword(cp, begin_years); 1276 if (lp != NULL) switch ((int) lp->l_value) { 1277 case YR_MINIMUM: 1278 rp->r_loyear = INT_MIN; 1279 break; 1280 case YR_MAXIMUM: 1281 rp->r_loyear = INT_MAX; 1282 break; 1283 default: /* "cannot happen" */ 1284 (void) fprintf(stderr, 1285 _("%s: panic: Invalid l_value %d\n"), 1286 progname, lp->l_value); 1287 (void) exit(EXIT_FAILURE); 1288 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { 1289 error(_("invalid starting year")); 1290 return; 1291 } else if (noise) { 1292 if (rp->r_loyear < min_year_representable) 1293 warning(_("starting year too low to be represented")); 1294 else if (rp->r_loyear > max_year_representable) 1295 warning(_("starting year too high to be represented")); 1296 } 1297 cp = hiyearp; 1298 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1299 case YR_MINIMUM: 1300 rp->r_hiyear = INT_MIN; 1301 break; 1302 case YR_MAXIMUM: 1303 rp->r_hiyear = INT_MAX; 1304 break; 1305 case YR_ONLY: 1306 rp->r_hiyear = rp->r_loyear; 1307 break; 1308 default: /* "cannot happen" */ 1309 (void) fprintf(stderr, 1310 _("%s: panic: Invalid l_value %d\n"), 1311 progname, lp->l_value); 1312 (void) exit(EXIT_FAILURE); 1313 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1314 error(_("invalid ending year")); 1315 return; 1316 } else if (noise) { 1317 if (rp->r_loyear < min_year_representable) 1318 warning(_("starting year too low to be represented")); 1319 else if (rp->r_loyear > max_year_representable) 1320 warning(_("starting year too high to be represented")); 1321 } 1322 if (rp->r_loyear > rp->r_hiyear) { 1323 error(_("starting year greater than ending year")); 1324 return; 1325 } 1326 if (*typep == '\0') 1327 rp->r_yrtype = NULL; 1328 else { 1329 if (rp->r_loyear == rp->r_hiyear) { 1330 error(_("typed single year")); 1331 return; 1332 } 1333 rp->r_yrtype = ecpyalloc(typep); 1334 } 1335 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1336 min_year = rp->r_loyear; 1337 /* 1338 ** Day work. 1339 ** Accept things such as: 1340 ** 1 1341 ** last-Sunday 1342 ** Sun<=20 1343 ** Sun>=7 1344 */ 1345 dp = ecpyalloc(dayp); 1346 if ((lp = byword(dp, lasts)) != NULL) { 1347 rp->r_dycode = DC_DOWLEQ; 1348 rp->r_wday = lp->l_value; 1349 rp->r_dayofmonth = len_months[1][rp->r_month]; 1350 } else { 1351 if ((ep = strchr(dp, '<')) != 0) 1352 rp->r_dycode = DC_DOWLEQ; 1353 else if ((ep = strchr(dp, '>')) != 0) 1354 rp->r_dycode = DC_DOWGEQ; 1355 else { 1356 ep = dp; 1357 rp->r_dycode = DC_DOM; 1358 } 1359 if (rp->r_dycode != DC_DOM) { 1360 *ep++ = 0; 1361 if (*ep++ != '=') { 1362 error(_("invalid day of month")); 1363 ifree(dp); 1364 return; 1365 } 1366 if ((lp = byword(dp, wday_names)) == NULL) { 1367 error(_("invalid weekday name")); 1368 ifree(dp); 1369 return; 1370 } 1371 rp->r_wday = lp->l_value; 1372 } 1373 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1374 rp->r_dayofmonth <= 0 || 1375 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1376 error(_("invalid day of month")); 1377 ifree(dp); 1378 return; 1379 } 1380 } 1381 ifree(dp); 1382 } 1383 1384 static void 1385 convert(val, buf) 1386 const long val; 1387 char * const buf; 1388 { 1389 register int i; 1390 register long shift; 1391 1392 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1393 buf[i] = val >> shift; 1394 } 1395 1396 static void 1397 puttzcode(val, fp) 1398 const long val; 1399 FILE * const fp; 1400 { 1401 char buf[4]; 1402 1403 convert(val, buf); 1404 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1405 } 1406 1407 static int 1408 atcomp(avp, bvp) 1409 const void * avp; 1410 const void * bvp; 1411 { 1412 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) 1413 return -1; 1414 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) 1415 return 1; 1416 else return 0; 1417 } 1418 1419 static void 1420 writezone(name) 1421 const char * const name; 1422 { 1423 register FILE * fp; 1424 register int i, j; 1425 static char * fullname; 1426 static struct tzhead tzh; 1427 time_t ats[TZ_MAX_TIMES]; 1428 unsigned char types[TZ_MAX_TIMES]; 1429 1430 /* 1431 ** Sort. 1432 */ 1433 if (timecnt > 1) 1434 (void) qsort((void *) attypes, (size_t) timecnt, 1435 (size_t) sizeof *attypes, atcomp); 1436 /* 1437 ** Optimize. 1438 */ 1439 { 1440 int fromi; 1441 int toi; 1442 1443 toi = 0; 1444 fromi = 0; 1445 while (fromi < timecnt && attypes[fromi].at < min_time) 1446 ++fromi; 1447 if (isdsts[0] == 0) 1448 while (fromi < timecnt && attypes[fromi].type == 0) 1449 ++fromi; /* handled by default rule */ 1450 for ( ; fromi < timecnt; ++fromi) { 1451 if (toi != 0 1452 && ((attypes[fromi].at 1453 + gmtoffs[attypes[toi - 1].type]) 1454 <= (attypes[toi - 1].at 1455 + gmtoffs[toi == 1 ? 0 1456 : attypes[toi - 2].type]))) { 1457 attypes[toi - 1].type = attypes[fromi].type; 1458 continue; 1459 } 1460 if (toi == 0 || 1461 attypes[toi - 1].type != attypes[fromi].type) 1462 attypes[toi++] = attypes[fromi]; 1463 } 1464 timecnt = toi; 1465 } 1466 /* 1467 ** Transfer. 1468 */ 1469 for (i = 0; i < timecnt; ++i) { 1470 ats[i] = attypes[i].at; 1471 types[i] = attypes[i].type; 1472 } 1473 fullname = erealloc(fullname, 1474 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1475 (void) sprintf(fullname, "%s/%s", directory, name); /* XXX: sprintf is safe */ 1476 /* 1477 ** Remove old file, if any, to snap links. 1478 */ 1479 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { 1480 const char *e = strerror(errno); 1481 1482 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), 1483 progname, fullname, e); 1484 (void) exit(EXIT_FAILURE); 1485 } 1486 if ((fp = fopen(fullname, "wb")) == NULL) { 1487 if (mkdirs(fullname) != 0) 1488 (void) exit(EXIT_FAILURE); 1489 if ((fp = fopen(fullname, "wb")) == NULL) { 1490 const char *e = strerror(errno); 1491 1492 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), 1493 progname, fullname, e); 1494 (void) exit(EXIT_FAILURE); 1495 } 1496 } 1497 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1498 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1499 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1500 convert(eitol(timecnt), tzh.tzh_timecnt); 1501 convert(eitol(typecnt), tzh.tzh_typecnt); 1502 convert(eitol(charcnt), tzh.tzh_charcnt); 1503 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); 1504 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1505 DO(tzh_magic); 1506 DO(tzh_reserved); 1507 DO(tzh_ttisgmtcnt); 1508 DO(tzh_ttisstdcnt); 1509 DO(tzh_leapcnt); 1510 DO(tzh_timecnt); 1511 DO(tzh_typecnt); 1512 DO(tzh_charcnt); 1513 #undef DO 1514 for (i = 0; i < timecnt; ++i) { 1515 j = leapcnt; 1516 while (--j >= 0) 1517 if (ats[i] >= trans[j]) { 1518 ats[i] = tadd(ats[i], corr[j]); 1519 break; 1520 } 1521 puttzcode((long) ats[i], fp); 1522 } 1523 if (timecnt > 0) 1524 (void) fwrite((void *) types, (size_t) sizeof types[0], 1525 (size_t) timecnt, fp); 1526 for (i = 0; i < typecnt; ++i) { 1527 puttzcode((long) gmtoffs[i], fp); 1528 (void) putc(isdsts[i], fp); 1529 (void) putc(abbrinds[i], fp); 1530 } 1531 if (charcnt != 0) 1532 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1533 (size_t) charcnt, fp); 1534 for (i = 0; i < leapcnt; ++i) { 1535 if (roll[i]) { 1536 if (timecnt == 0 || trans[i] < ats[0]) { 1537 j = 0; 1538 while (isdsts[j]) 1539 if (++j >= typecnt) { 1540 j = 0; 1541 break; 1542 } 1543 } else { 1544 j = 1; 1545 while (j < timecnt && trans[i] >= ats[j]) 1546 ++j; 1547 j = types[j - 1]; 1548 } 1549 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1550 } else puttzcode((long) trans[i], fp); 1551 puttzcode((long) corr[i], fp); 1552 } 1553 for (i = 0; i < typecnt; ++i) 1554 (void) putc(ttisstds[i], fp); 1555 for (i = 0; i < typecnt; ++i) 1556 (void) putc(ttisgmts[i], fp); 1557 if (ferror(fp) || fclose(fp)) { 1558 (void) fprintf(stderr, _("%s: Error writing %s\n"), 1559 progname, fullname); 1560 (void) exit(EXIT_FAILURE); 1561 } 1562 } 1563 1564 static void 1565 doabbr(abbr, abbrlen, format, letters, isdst) 1566 char * const abbr; 1567 const int abbrlen; 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)strncpy(abbr, format, abbrlen - 1); 1575 else 1576 (void)snprintf(abbr, abbrlen, format, letters); 1577 } else if (isdst) 1578 (void)strncpy(abbr, strchr(format, '/') + 1, abbrlen - 1); 1579 else { 1580 (void)strncpy(abbr, format, abbrlen - 1); 1581 *strchr(abbr, '/') = '\0'; 1582 } 1583 } 1584 1585 static void 1586 outzone(zpfirst, zonecount) 1587 const struct zone * const zpfirst; 1588 const int zonecount; 1589 { 1590 register const struct zone * zp; 1591 register struct rule * rp; 1592 register int i, j; 1593 register int usestart, useuntil; 1594 register time_t starttime, untiltime; 1595 register long gmtoff; 1596 register long stdoff; 1597 register int year; 1598 register long startoff; 1599 register int startttisstd; 1600 register int startttisgmt; 1601 register int type; 1602 char startbuf[BUFSIZ]; 1603 1604 INITIALIZE(untiltime); 1605 INITIALIZE(starttime); 1606 /* 1607 ** Now. . .finally. . .generate some useful data! 1608 */ 1609 timecnt = 0; 1610 typecnt = 0; 1611 charcnt = 0; 1612 /* 1613 ** A guess that may well be corrected later. 1614 */ 1615 stdoff = 0; 1616 /* 1617 ** Thanks to Earl Chew (earl (at) dnd.icp.nec.com.au) 1618 ** for noting the need to unconditionally initialize startttisstd. 1619 */ 1620 startttisstd = FALSE; 1621 startttisgmt = FALSE; 1622 for (i = 0; i < zonecount; ++i) { 1623 zp = &zpfirst[i]; 1624 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1625 useuntil = i < (zonecount - 1); 1626 if (useuntil && zp->z_untiltime <= min_time) 1627 continue; 1628 gmtoff = zp->z_gmtoff; 1629 eat(zp->z_filename, zp->z_linenum); 1630 *startbuf = '\0'; 1631 startoff = zp->z_gmtoff; 1632 if (zp->z_nrules == 0) { 1633 stdoff = zp->z_stdoff; 1634 doabbr(startbuf, sizeof startbuf, zp->z_format, 1635 (char *) NULL, stdoff != 0); 1636 type = addtype(oadd(zp->z_gmtoff, stdoff), 1637 startbuf, stdoff != 0, startttisstd, 1638 startttisgmt); 1639 if (usestart) { 1640 addtt(starttime, type); 1641 usestart = FALSE; 1642 } 1643 else if (stdoff != 0) 1644 addtt(min_time, type); 1645 } else for (year = min_year; year <= max_year; ++year) { 1646 if (useuntil && year > zp->z_untilrule.r_hiyear) 1647 break; 1648 /* 1649 ** Mark which rules to do in the current year. 1650 ** For those to do, calculate rpytime(rp, year); 1651 */ 1652 for (j = 0; j < zp->z_nrules; ++j) { 1653 rp = &zp->z_rules[j]; 1654 eats(zp->z_filename, zp->z_linenum, 1655 rp->r_filename, rp->r_linenum); 1656 rp->r_todo = year >= rp->r_loyear && 1657 year <= rp->r_hiyear && 1658 yearistype(year, rp->r_yrtype); 1659 if (rp->r_todo) 1660 rp->r_temp = rpytime(rp, year); 1661 } 1662 for ( ; ; ) { 1663 register int k; 1664 register time_t jtime, ktime; 1665 register long offset; 1666 char buf[BUFSIZ]; 1667 1668 INITIALIZE(ktime); 1669 if (useuntil) { 1670 /* 1671 ** Turn untiltime into UTC 1672 ** assuming the current gmtoff and 1673 ** stdoff values. 1674 */ 1675 untiltime = zp->z_untiltime; 1676 if (!zp->z_untilrule.r_todisgmt) 1677 untiltime = tadd(untiltime, 1678 -gmtoff); 1679 if (!zp->z_untilrule.r_todisstd) 1680 untiltime = tadd(untiltime, 1681 -stdoff); 1682 } 1683 /* 1684 ** Find the rule (of those to do, if any) 1685 ** that takes effect earliest in the year. 1686 */ 1687 k = -1; 1688 for (j = 0; j < zp->z_nrules; ++j) { 1689 rp = &zp->z_rules[j]; 1690 if (!rp->r_todo) 1691 continue; 1692 eats(zp->z_filename, zp->z_linenum, 1693 rp->r_filename, rp->r_linenum); 1694 offset = rp->r_todisgmt ? 0 : gmtoff; 1695 if (!rp->r_todisstd) 1696 offset = oadd(offset, stdoff); 1697 jtime = rp->r_temp; 1698 if (jtime == min_time || 1699 jtime == max_time) 1700 continue; 1701 jtime = tadd(jtime, -offset); 1702 if (k < 0 || jtime < ktime) { 1703 k = j; 1704 ktime = jtime; 1705 } 1706 } 1707 if (k < 0) 1708 break; /* go on to next year */ 1709 rp = &zp->z_rules[k]; 1710 rp->r_todo = FALSE; 1711 if (useuntil && ktime >= untiltime) 1712 break; 1713 stdoff = rp->r_stdoff; 1714 if (usestart && ktime == starttime) 1715 usestart = FALSE; 1716 if (usestart) { 1717 if (ktime < starttime) { 1718 startoff = oadd(zp->z_gmtoff, 1719 stdoff); 1720 doabbr(startbuf,sizeof startbuf, 1721 zp->z_format, 1722 rp->r_abbrvar, 1723 rp->r_stdoff != 0); 1724 continue; 1725 } 1726 if (*startbuf == '\0' && 1727 startoff == oadd(zp->z_gmtoff, 1728 stdoff)) { 1729 doabbr(startbuf,sizeof startbuf, 1730 zp->z_format, 1731 rp->r_abbrvar, 1732 rp->r_stdoff != 0); 1733 } 1734 } 1735 eats(zp->z_filename, zp->z_linenum, 1736 rp->r_filename, rp->r_linenum); 1737 doabbr(buf, sizeof buf, zp->z_format, 1738 rp->r_abbrvar, rp->r_stdoff != 0); 1739 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1740 type = addtype(offset, buf, rp->r_stdoff != 0, 1741 rp->r_todisstd, rp->r_todisgmt); 1742 addtt(ktime, type); 1743 } 1744 } 1745 if (usestart) { 1746 if (*startbuf == '\0' && 1747 zp->z_format != NULL && 1748 strchr(zp->z_format, '%') == NULL && 1749 strchr(zp->z_format, '/') == NULL) 1750 (void)strncpy(startbuf, zp->z_format, 1751 sizeof(startbuf) - 1); 1752 eat(zp->z_filename, zp->z_linenum); 1753 if (*startbuf == '\0') 1754 error(_("can't determine time zone abbreviation to use just after until time")); 1755 else addtt(starttime, 1756 addtype(startoff, startbuf, 1757 startoff != zp->z_gmtoff, 1758 startttisstd, 1759 startttisgmt)); 1760 } 1761 /* 1762 ** Now we may get to set starttime for the next zone line. 1763 */ 1764 if (useuntil) { 1765 startttisstd = zp->z_untilrule.r_todisstd; 1766 startttisgmt = zp->z_untilrule.r_todisgmt; 1767 starttime = zp->z_untiltime; 1768 if (!startttisstd) 1769 starttime = tadd(starttime, -stdoff); 1770 if (!startttisgmt) 1771 starttime = tadd(starttime, -gmtoff); 1772 } 1773 } 1774 writezone(zpfirst->z_name); 1775 } 1776 1777 static void 1778 addtt(starttime, type) 1779 const time_t starttime; 1780 int type; 1781 { 1782 if (starttime <= min_time || 1783 (timecnt == 1 && attypes[0].at < min_time)) { 1784 gmtoffs[0] = gmtoffs[type]; 1785 isdsts[0] = isdsts[type]; 1786 ttisstds[0] = ttisstds[type]; 1787 ttisgmts[0] = ttisgmts[type]; 1788 if (abbrinds[type] != 0) 1789 (void) strcpy(chars, &chars[abbrinds[type]]); 1790 abbrinds[0] = 0; 1791 charcnt = strlen(chars) + 1; 1792 typecnt = 1; 1793 timecnt = 0; 1794 type = 0; 1795 } 1796 if (timecnt >= TZ_MAX_TIMES) { 1797 error(_("too many transitions?!")); 1798 (void) exit(EXIT_FAILURE); 1799 } 1800 attypes[timecnt].at = starttime; 1801 attypes[timecnt].type = type; 1802 ++timecnt; 1803 } 1804 1805 static int 1806 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1807 const long gmtoff; 1808 const char * const abbr; 1809 const int isdst; 1810 const int ttisstd; 1811 const int ttisgmt; 1812 { 1813 register int i, j; 1814 1815 if (isdst != TRUE && isdst != FALSE) { 1816 error(_("internal error - addtype called with bad isdst")); 1817 (void) exit(EXIT_FAILURE); 1818 } 1819 if (ttisstd != TRUE && ttisstd != FALSE) { 1820 error(_("internal error - addtype called with bad ttisstd")); 1821 (void) exit(EXIT_FAILURE); 1822 } 1823 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1824 error(_("internal error - addtype called with bad ttisgmt")); 1825 (void) exit(EXIT_FAILURE); 1826 } 1827 /* 1828 ** See if there's already an entry for this zone type. 1829 ** If so, just return its index. 1830 */ 1831 for (i = 0; i < typecnt; ++i) { 1832 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1833 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1834 ttisstd == ttisstds[i] && 1835 ttisgmt == ttisgmts[i]) 1836 return i; 1837 } 1838 /* 1839 ** There isn't one; add a new one, unless there are already too 1840 ** many. 1841 */ 1842 if (typecnt >= TZ_MAX_TYPES) { 1843 error(_("too many local time types")); 1844 (void) exit(EXIT_FAILURE); 1845 } 1846 gmtoffs[i] = gmtoff; 1847 isdsts[i] = isdst; 1848 ttisstds[i] = ttisstd; 1849 ttisgmts[i] = ttisgmt; 1850 1851 for (j = 0; j < charcnt; ++j) 1852 if (strcmp(&chars[j], abbr) == 0) 1853 break; 1854 if (j == charcnt) 1855 newabbr(abbr); 1856 abbrinds[i] = j; 1857 ++typecnt; 1858 return i; 1859 } 1860 1861 static void 1862 leapadd(t, positive, rolling, count) 1863 const time_t t; 1864 const int positive; 1865 const int rolling; 1866 int count; 1867 { 1868 register int i, j; 1869 1870 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1871 error(_("too many leap seconds")); 1872 (void) exit(EXIT_FAILURE); 1873 } 1874 for (i = 0; i < leapcnt; ++i) 1875 if (t <= trans[i]) { 1876 if (t == trans[i]) { 1877 error(_("repeated leap second moment")); 1878 (void) exit(EXIT_FAILURE); 1879 } 1880 break; 1881 } 1882 do { 1883 for (j = leapcnt; j > i; --j) { 1884 trans[j] = trans[j - 1]; 1885 corr[j] = corr[j - 1]; 1886 roll[j] = roll[j - 1]; 1887 } 1888 trans[i] = t; 1889 corr[i] = positive ? 1L : eitol(-count); 1890 roll[i] = rolling; 1891 ++leapcnt; 1892 } while (positive && --count != 0); 1893 } 1894 1895 static void 1896 adjleap P((void)) 1897 { 1898 register int i; 1899 register long last = 0; 1900 1901 /* 1902 ** propagate leap seconds forward 1903 */ 1904 for (i = 0; i < leapcnt; ++i) { 1905 trans[i] = tadd(trans[i], last); 1906 last = corr[i] += last; 1907 } 1908 } 1909 1910 static int 1911 yearistype(year, type) 1912 const int year; 1913 const char * const type; 1914 { 1915 static char * buf; 1916 int result; 1917 1918 if (type == NULL || *type == '\0') 1919 return TRUE; 1920 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1921 (void)sprintf(buf, "%s %d %s", yitcommand, year, type); /* XXX: sprintf is safe */ 1922 result = system(buf); 1923 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) { 1924 case 0: 1925 return TRUE; 1926 case 1: 1927 return FALSE; 1928 } 1929 error(_("Wild result from command execution")); 1930 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), 1931 progname, buf, result); 1932 for ( ; ; ) 1933 (void) exit(EXIT_FAILURE); 1934 } 1935 1936 static int 1937 lowerit(a) 1938 int a; 1939 { 1940 a = (unsigned char) a; 1941 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1942 } 1943 1944 static int 1945 ciequal(ap, bp) /* case-insensitive equality */ 1946 register const char * ap; 1947 register const char * bp; 1948 { 1949 while (lowerit(*ap) == lowerit(*bp++)) 1950 if (*ap++ == '\0') 1951 return TRUE; 1952 return FALSE; 1953 } 1954 1955 static int 1956 itsabbr(abbr, word) 1957 register const char * abbr; 1958 register const char * word; 1959 { 1960 if (lowerit(*abbr) != lowerit(*word)) 1961 return FALSE; 1962 ++word; 1963 while (*++abbr != '\0') 1964 do { 1965 if (*word == '\0') 1966 return FALSE; 1967 } while (lowerit(*word++) != lowerit(*abbr)); 1968 return TRUE; 1969 } 1970 1971 static const struct lookup * 1972 byword(word, table) 1973 register const char * const word; 1974 register const struct lookup * const table; 1975 { 1976 register const struct lookup * foundlp; 1977 register const struct lookup * lp; 1978 1979 if (word == NULL || table == NULL) 1980 return NULL; 1981 /* 1982 ** Look for exact match. 1983 */ 1984 for (lp = table; lp->l_word != NULL; ++lp) 1985 if (ciequal(word, lp->l_word)) 1986 return lp; 1987 /* 1988 ** Look for inexact match. 1989 */ 1990 foundlp = NULL; 1991 for (lp = table; lp->l_word != NULL; ++lp) 1992 if (itsabbr(word, lp->l_word)) { 1993 if (foundlp == NULL) 1994 foundlp = lp; 1995 else return NULL; /* multiple inexact matches */ 1996 } 1997 return foundlp; 1998 } 1999 2000 static char ** 2001 getfields(cp) 2002 register char * cp; 2003 { 2004 register char * dp; 2005 register char ** array; 2006 register int nsubs; 2007 2008 if (cp == NULL) 2009 return NULL; 2010 array = (char **) (void *) 2011 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 2012 nsubs = 0; 2013 for ( ; ; ) { 2014 while (isascii(*cp) && isspace((unsigned char) *cp)) 2015 ++cp; 2016 if (*cp == '\0' || *cp == '#') 2017 break; 2018 array[nsubs++] = dp = cp; 2019 do { 2020 if ((*dp = *cp++) != '"') 2021 ++dp; 2022 else while ((*dp = *cp++) != '"') 2023 if (*dp != '\0') 2024 ++dp; 2025 else error(_("Odd number of quotation marks")); 2026 } while (*cp != '\0' && *cp != '#' && 2027 (!isascii(*cp) || !isspace((unsigned char) *cp))); 2028 if (isascii(*cp) && isspace((unsigned char) *cp)) 2029 ++cp; 2030 *dp = '\0'; 2031 } 2032 array[nsubs] = NULL; 2033 return array; 2034 } 2035 2036 static long 2037 oadd(t1, t2) 2038 const long t1; 2039 const long t2; 2040 { 2041 register long t; 2042 2043 t = t1 + t2; 2044 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2045 error(_("time overflow")); 2046 (void) exit(EXIT_FAILURE); 2047 } 2048 return t; 2049 } 2050 2051 static time_t 2052 tadd(t1, t2) 2053 const time_t t1; 2054 const long t2; 2055 { 2056 register time_t t; 2057 2058 if (t1 == max_time && t2 > 0) 2059 return max_time; 2060 if (t1 == min_time && t2 < 0) 2061 return min_time; 2062 t = t1 + t2; 2063 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2064 error(_("time overflow")); 2065 (void) exit(EXIT_FAILURE); 2066 } 2067 return t; 2068 } 2069 2070 /* 2071 ** Given a rule, and a year, compute the date - in seconds since January 1, 2072 ** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2073 */ 2074 2075 static time_t 2076 rpytime(rp, wantedy) 2077 register const struct rule * const rp; 2078 register const int wantedy; 2079 { 2080 register int y, m, i; 2081 register long dayoff; /* with a nod to Margaret O. */ 2082 register time_t t; 2083 2084 if (wantedy == INT_MIN) 2085 return min_time; 2086 if (wantedy == INT_MAX) 2087 return max_time; 2088 dayoff = 0; 2089 m = TM_JANUARY; 2090 y = EPOCH_YEAR; 2091 while (wantedy != y) { 2092 if (wantedy > y) { 2093 i = len_years[isleap(y)]; 2094 ++y; 2095 } else { 2096 --y; 2097 i = -len_years[isleap(y)]; 2098 } 2099 dayoff = oadd(dayoff, eitol(i)); 2100 } 2101 while (m != rp->r_month) { 2102 i = len_months[isleap(y)][m]; 2103 dayoff = oadd(dayoff, eitol(i)); 2104 ++m; 2105 } 2106 i = rp->r_dayofmonth; 2107 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2108 if (rp->r_dycode == DC_DOWLEQ) 2109 --i; 2110 else { 2111 error(_("use of 2/29 in non leap-year")); 2112 (void) exit(EXIT_FAILURE); 2113 } 2114 } 2115 --i; 2116 dayoff = oadd(dayoff, eitol(i)); 2117 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2118 register long wday; 2119 2120 #define LDAYSPERWEEK ((long) DAYSPERWEEK) 2121 wday = eitol(EPOCH_WDAY); 2122 /* 2123 ** Don't trust mod of negative numbers. 2124 */ 2125 if (dayoff >= 0) 2126 wday = (wday + dayoff) % LDAYSPERWEEK; 2127 else { 2128 wday -= ((-dayoff) % LDAYSPERWEEK); 2129 if (wday < 0) 2130 wday += LDAYSPERWEEK; 2131 } 2132 while (wday != eitol(rp->r_wday)) 2133 if (rp->r_dycode == DC_DOWGEQ) { 2134 dayoff = oadd(dayoff, (long) 1); 2135 if (++wday >= LDAYSPERWEEK) 2136 wday = 0; 2137 ++i; 2138 } else { 2139 dayoff = oadd(dayoff, (long) -1); 2140 if (--wday < 0) 2141 wday = LDAYSPERWEEK - 1; 2142 --i; 2143 } 2144 if (i < 0 || i >= len_months[isleap(y)][m]) { 2145 error(_("no day in month matches rule")); 2146 (void) exit(EXIT_FAILURE); 2147 } 2148 } 2149 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2150 return min_time; 2151 t = (time_t) dayoff * SECSPERDAY; 2152 /* 2153 ** Cheap overflow check. 2154 */ 2155 if (t / SECSPERDAY != dayoff) 2156 return (dayoff > 0) ? max_time : min_time; 2157 return tadd(t, rp->r_tod); 2158 } 2159 2160 static void 2161 newabbr(string) 2162 const char * const string; 2163 { 2164 register int i; 2165 2166 i = strlen(string) + 1; 2167 if (charcnt + i > TZ_MAX_CHARS) { 2168 error(_("too many, or too long, time zone abbreviations")); 2169 (void) exit(EXIT_FAILURE); 2170 } 2171 (void)strncpy(&chars[charcnt], string, sizeof(chars) - charcnt - 1); 2172 charcnt += eitol(i); 2173 } 2174 2175 static int 2176 mkdirs(argname) 2177 char * const argname; 2178 { 2179 register char * name; 2180 register char * cp; 2181 2182 if (argname == NULL || *argname == '\0') 2183 return 0; 2184 cp = name = ecpyalloc(argname); 2185 while ((cp = strchr(cp + 1, '/')) != 0) { 2186 *cp = '\0'; 2187 #ifndef __NetBSD__ 2188 /* 2189 ** DOS drive specifier? 2190 */ 2191 if (isalpha((unsigned char) name[0]) && 2192 name[1] == ':' && name[2] == '\0') { 2193 *cp = '/'; 2194 continue; 2195 } 2196 #endif /* !defined __NetBSD__ */ 2197 if (!itsdir(name)) { 2198 /* 2199 ** It doesn't seem to exist, so we try to create it. 2200 ** Creation may fail because of the directory being 2201 ** created by some other multiprocessor, so we get 2202 ** to do extra checking. 2203 */ 2204 if (mkdir(name, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) { 2205 const char *e = strerror(errno); 2206 2207 if (errno != EEXIST || !itsdir(name)) { 2208 (void) fprintf(stderr, 2209 _("%s: Can't create directory %s: %s\n"), 2210 progname, name, e); 2211 ifree(name); 2212 return -1; 2213 } 2214 } 2215 } 2216 *cp = '/'; 2217 } 2218 ifree(name); 2219 return 0; 2220 } 2221 2222 static long 2223 eitol(i) 2224 const int i; 2225 { 2226 long l; 2227 2228 l = i; 2229 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { 2230 (void) fprintf(stderr, 2231 _("%s: %d did not sign extend correctly\n"), 2232 progname, i); 2233 (void) exit(EXIT_FAILURE); 2234 } 2235 return l; 2236 } 2237 2238 /* 2239 ** UNIX was a registered trademark of UNIX System Laboratories in 1993. 2240 */ 2241
Indexes created Mon Sep 22 13:09:51 GMT 2025