zic.c revision 79751
1#ifndef lint 2#ifndef NOID 3static const char elsieid[] = "@(#)zic.c 7.96"; 4#endif /* !defined NOID */ 5#endif /* !defined lint */ 6 7#ifndef lint 8static const char rcsid[] = 9 "$FreeBSD: head/usr.sbin/zic/zic.c 79751 2001-07-15 06:20:45Z dd $"; 10#endif /* not lint */ 11 12#include "private.h" 13#include "tzfile.h" 14#include <err.h> 15#include <locale.h> 16#include <sys/stat.h> /* for umask manifest constants */ 17#include <sys/types.h> 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 33struct 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 68struct 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 86static void addtt P((time_t starttime, int type)); 87static int addtype P((long gmtoff, const char * abbr, int isdst, 88 int ttisstd, int ttisgmt)); 89static void leapadd P((time_t t, int positive, int rolling, int count)); 90static void adjleap P((void)); 91static void associate P((void)); 92static int atcomp P((const void * avp, const void * bvp)); 93static int ciequal P((const char * ap, const char * bp)); 94static void convert P((long val, char * buf)); 95static void dolink P((const char * fromfile, const char * tofile)); 96static void doabbr P((char * abbr, const char * format, 97 const char * letters, int isdst)); 98static void eat P((const char * name, int num)); 99static void eats P((const char * name, int num, 100 const char * rname, int rnum)); 101static long eitol P((int i)); 102static void error P((const char * message)); 103static char ** getfields P((char * buf)); 104static long gethms P((const char * string, const char * errstrng, 105 int signable)); 106static void infile P((const char * filename)); 107static void inleap P((char ** fields, int nfields)); 108static void inlink P((char ** fields, int nfields)); 109static void inrule P((char ** fields, int nfields)); 110static int inzcont P((char ** fields, int nfields)); 111static int inzone P((char ** fields, int nfields)); 112static int inzsub P((char ** fields, int nfields, int iscont)); 113static int itsabbr P((const char * abbr, const char * word)); 114static int itsdir P((const char * name)); 115static int lowerit P((int c)); 116static char * memcheck P((char * tocheck)); 117static int mkdirs P((char * filename)); 118static void newabbr P((const char * abbr)); 119static long oadd P((long t1, long t2)); 120static void outzone P((const struct zone * zp, int ntzones)); 121static void puttzcode P((long code, FILE * fp)); 122static int rcomp P((const void * leftp, const void * rightp)); 123static time_t rpytime P((const struct rule * rp, int wantedy)); 124static void rulesub P((struct rule * rp, 125 const char * loyearp, const char * hiyearp, 126 const char * typep, const char * monthp, 127 const char * dayp, const char * timep)); 128static void setboundaries P((void)); 129static void setgroup P((gid_t *flag, const char *name)); 130static void setuser P((uid_t *flag, const char *name)); 131static time_t tadd P((time_t t1, long t2)); 132static void usage P((void)); 133static void warning P((const char * const string)); 134static void writezone P((const char * name)); 135static int yearistype P((int year, const char * type)); 136 137#if !(HAVE_STRERROR - 0) 138static char * strerror P((int)); 139#endif /* !(HAVE_STRERROR - 0) */ 140 141static int charcnt; 142static int errors; 143static const char * filename; 144static int leapcnt; 145static int linenum; 146static time_t max_time; 147static int max_year; 148static int max_year_representable; 149static time_t min_time; 150static int min_year; 151static int min_year_representable; 152static int noise; 153static const char * rfilename; 154static int rlinenum; 155static int timecnt; 156static int typecnt; 157 158/* 159** Line codes. 160*/ 161 162#define LC_RULE 0 163#define LC_ZONE 1 164#define LC_LINK 2 165#define LC_LEAP 3 166 167/* 168** Which fields are which on a Zone line. 169*/ 170 171#define ZF_NAME 1 172#define ZF_GMTOFF 2 173#define ZF_RULE 3 174#define ZF_FORMAT 4 175#define ZF_TILYEAR 5 176#define ZF_TILMONTH 6 177#define ZF_TILDAY 7 178#define ZF_TILTIME 8 179#define ZONE_MINFIELDS 5 180#define ZONE_MAXFIELDS 9 181 182/* 183** Which fields are which on a Zone continuation line. 184*/ 185 186#define ZFC_GMTOFF 0 187#define ZFC_RULE 1 188#define ZFC_FORMAT 2 189#define ZFC_TILYEAR 3 190#define ZFC_TILMONTH 4 191#define ZFC_TILDAY 5 192#define ZFC_TILTIME 6 193#define ZONEC_MINFIELDS 3 194#define ZONEC_MAXFIELDS 7 195 196/* 197** Which files are which on a Rule line. 198*/ 199 200#define RF_NAME 1 201#define RF_LOYEAR 2 202#define RF_HIYEAR 3 203#define RF_COMMAND 4 204#define RF_MONTH 5 205#define RF_DAY 6 206#define RF_TOD 7 207#define RF_STDOFF 8 208#define RF_ABBRVAR 9 209#define RULE_FIELDS 10 210 211/* 212** Which fields are which on a Link line. 213*/ 214 215#define LF_FROM 1 216#define LF_TO 2 217#define LINK_FIELDS 3 218 219/* 220** Which fields are which on a Leap line. 221*/ 222 223#define LP_YEAR 1 224#define LP_MONTH 2 225#define LP_DAY 3 226#define LP_TIME 4 227#define LP_CORR 5 228#define LP_ROLL 6 229#define LEAP_FIELDS 7 230 231/* 232** Year synonyms. 233*/ 234 235#define YR_MINIMUM 0 236#define YR_MAXIMUM 1 237#define YR_ONLY 2 238 239static struct rule * rules; 240static int nrules; /* number of rules */ 241 242static struct zone * zones; 243static int nzones; /* number of zones */ 244 245struct link { 246 const char * l_filename; 247 int l_linenum; 248 const char * l_from; 249 const char * l_to; 250}; 251 252static struct link * links; 253static int nlinks; 254 255struct lookup { 256 const char * l_word; 257 const int l_value; 258}; 259 260static struct lookup const * byword P((const char * string, 261 const struct lookup * lp)); 262 263static struct lookup const line_codes[] = { 264 { "Rule", LC_RULE }, 265 { "Zone", LC_ZONE }, 266 { "Link", LC_LINK }, 267 { "Leap", LC_LEAP }, 268 { NULL, 0} 269}; 270 271static struct lookup const mon_names[] = { 272 { "January", TM_JANUARY }, 273 { "February", TM_FEBRUARY }, 274 { "March", TM_MARCH }, 275 { "April", TM_APRIL }, 276 { "May", TM_MAY }, 277 { "June", TM_JUNE }, 278 { "July", TM_JULY }, 279 { "August", TM_AUGUST }, 280 { "September", TM_SEPTEMBER }, 281 { "October", TM_OCTOBER }, 282 { "November", TM_NOVEMBER }, 283 { "December", TM_DECEMBER }, 284 { NULL, 0 } 285}; 286 287static struct lookup const wday_names[] = { 288 { "Sunday", TM_SUNDAY }, 289 { "Monday", TM_MONDAY }, 290 { "Tuesday", TM_TUESDAY }, 291 { "Wednesday", TM_WEDNESDAY }, 292 { "Thursday", TM_THURSDAY }, 293 { "Friday", TM_FRIDAY }, 294 { "Saturday", TM_SATURDAY }, 295 { NULL, 0 } 296}; 297 298static struct lookup const lasts[] = { 299 { "last-Sunday", TM_SUNDAY }, 300 { "last-Monday", TM_MONDAY }, 301 { "last-Tuesday", TM_TUESDAY }, 302 { "last-Wednesday", TM_WEDNESDAY }, 303 { "last-Thursday", TM_THURSDAY }, 304 { "last-Friday", TM_FRIDAY }, 305 { "last-Saturday", TM_SATURDAY }, 306 { NULL, 0 } 307}; 308 309static struct lookup const begin_years[] = { 310 { "minimum", YR_MINIMUM }, 311 { "maximum", YR_MAXIMUM }, 312 { NULL, 0 } 313}; 314 315static struct lookup const end_years[] = { 316 { "minimum", YR_MINIMUM }, 317 { "maximum", YR_MAXIMUM }, 318 { "only", YR_ONLY }, 319 { NULL, 0 } 320}; 321 322static struct lookup const leap_types[] = { 323 { "Rolling", TRUE }, 324 { "Stationary", FALSE }, 325 { NULL, 0 } 326}; 327 328static const int len_months[2][MONSPERYEAR] = { 329 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, 330 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } 331}; 332 333static const int len_years[2] = { 334 DAYSPERNYEAR, DAYSPERLYEAR 335}; 336 337static struct attype { 338 time_t at; 339 unsigned char type; 340} attypes[TZ_MAX_TIMES]; 341static long gmtoffs[TZ_MAX_TYPES]; 342static char isdsts[TZ_MAX_TYPES]; 343static unsigned char abbrinds[TZ_MAX_TYPES]; 344static char ttisstds[TZ_MAX_TYPES]; 345static char ttisgmts[TZ_MAX_TYPES]; 346static char chars[TZ_MAX_CHARS]; 347static time_t trans[TZ_MAX_LEAPS]; 348static long corr[TZ_MAX_LEAPS]; 349static char roll[TZ_MAX_LEAPS]; 350 351/* 352** Memory allocation. 353*/ 354 355static char * 356memcheck(ptr) 357char * const ptr; 358{ 359 if (ptr == NULL) 360 errx(EXIT_FAILURE, _("memory exhausted")); 361 return ptr; 362} 363 364#define emalloc(size) memcheck(imalloc(size)) 365#define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) 366#define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) 367#define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) 368 369/* 370** Error handling. 371*/ 372 373#if !(HAVE_STRERROR - 0) 374static char * 375strerror(errnum) 376int errnum; 377{ 378 extern char * sys_errlist[]; 379 extern int sys_nerr; 380 381 return (errnum > 0 && errnum <= sys_nerr) ? 382 sys_errlist[errnum] : _("Unknown system error"); 383} 384#endif /* !(HAVE_STRERROR - 0) */ 385 386static void 387eats(name, num, rname, rnum) 388const char * const name; 389const int num; 390const char * const rname; 391const int rnum; 392{ 393 filename = name; 394 linenum = num; 395 rfilename = rname; 396 rlinenum = rnum; 397} 398 399static void 400eat(name, num) 401const char * const name; 402const int num; 403{ 404 eats(name, num, (char *) NULL, -1); 405} 406 407static void 408error(string) 409const char * const string; 410{ 411 /* 412 ** Match the format of "cc" to allow sh users to 413 ** zic ... 2>&1 | error -t "*" -v 414 ** on BSD systems. 415 */ 416 (void) fprintf(stderr, _("\"%s\", line %d: %s"), 417 filename, linenum, string); 418 if (rfilename != NULL) 419 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), 420 rfilename, rlinenum); 421 (void) fprintf(stderr, "\n"); 422 ++errors; 423} 424 425static void 426warning(string) 427const char * const string; 428{ 429 char * cp; 430 431 cp = ecpyalloc(_("warning: ")); 432 cp = ecatalloc(cp, string); 433 error(cp); 434 ifree(cp); 435 --errors; 436} 437 438static void 439usage P((void)) 440{ 441 (void) fprintf(stderr, "%s\n%s\n", 442_("usage: zic [-s] [-v] [-l localtime] [-p posixrules] [-d directory]"), 443_(" [-L leapseconds] [-y yearistype] [filename ... ]")); 444 (void) exit(EXIT_FAILURE); 445} 446 447static const char * psxrules; 448static const char * lcltime; 449static const char * directory; 450static const char * leapsec; 451static const char * yitcommand; 452static int sflag = FALSE; 453static int Dflag; 454static uid_t uflag = (uid_t)-1; 455static gid_t gflag = (gid_t)-1; 456static mode_t mflag = (S_IRUSR | S_IRGRP | S_IROTH 457 | S_IWUSR); 458 459int 460main(argc, argv) 461int argc; 462char * argv[]; 463{ 464 register int i; 465 register int j; 466 register int c; 467 468#ifdef unix 469 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); 470#endif /* defined unix */ 471#if HAVE_GETTEXT - 0 472 (void) setlocale(LC_MESSAGES, ""); 473#ifdef TZ_DOMAINDIR 474 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); 475#endif /* defined TEXTDOMAINDIR */ 476 (void) textdomain(TZ_DOMAIN); 477#endif /* HAVE_GETTEXT - 0 */ 478 while ((c = getopt(argc, argv, "Dd:g:l:m:p:L:u:vsy:")) != -1) 479 switch (c) { 480 default: 481 usage(); 482 case 'D': 483 Dflag = 1; 484 break; 485 case 'd': 486 if (directory == NULL) 487 directory = optarg; 488 else 489 errx(EXIT_FAILURE, 490_("more than one -d option specified")); 491 break; 492 case 'g': 493 setgroup(&gflag, optarg); 494 break; 495 case 'l': 496 if (lcltime == NULL) 497 lcltime = optarg; 498 else 499 errx(EXIT_FAILURE, 500_("more than one -l option specified")); 501 break; 502 case 'm': 503 { 504 void *set = setmode(optarg); 505 getmode(set, mflag); 506 break; 507 } 508 case 'p': 509 if (psxrules == NULL) 510 psxrules = optarg; 511 else 512 errx(EXIT_FAILURE, 513_("more than one -p option specified")); 514 break; 515 case 'u': 516 setuser(&uflag, optarg); 517 break; 518 case 'y': 519 if (yitcommand == NULL) 520 yitcommand = optarg; 521 else 522 errx(EXIT_FAILURE, 523_("more than one -y option specified")); 524 break; 525 case 'L': 526 if (leapsec == NULL) 527 leapsec = optarg; 528 else 529 errx(EXIT_FAILURE, 530_("more than one -L option specified")); 531 break; 532 case 'v': 533 noise = TRUE; 534 break; 535 case 's': 536 sflag = TRUE; 537 break; 538 } 539 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 540 usage(); /* usage message by request */ 541 if (directory == NULL) 542 directory = TZDIR; 543 if (yitcommand == NULL) 544 yitcommand = "yearistype"; 545 546 setboundaries(); 547 548 if (optind < argc && leapsec != NULL) { 549 infile(leapsec); 550 adjleap(); 551 } 552 553 for (i = optind; i < argc; ++i) 554 infile(argv[i]); 555 if (errors) 556 (void) exit(EXIT_FAILURE); 557 associate(); 558 for (i = 0; i < nzones; i = j) { 559 /* 560 ** Find the next non-continuation zone entry. 561 */ 562 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 563 continue; 564 outzone(&zones[i], j - i); 565 } 566 /* 567 ** Make links. 568 */ 569 for (i = 0; i < nlinks; ++i) 570 dolink(links[i].l_from, links[i].l_to); 571 if (lcltime != NULL) 572 dolink(lcltime, TZDEFAULT); 573 if (psxrules != NULL) 574 dolink(psxrules, TZDEFRULES); 575 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 576} 577 578static void 579dolink(fromfile, tofile) 580const char * const fromfile; 581const char * const tofile; 582{ 583 register char * fromname; 584 register char * toname; 585 586 if (fromfile[0] == '/') 587 fromname = ecpyalloc(fromfile); 588 else { 589 fromname = ecpyalloc(directory); 590 fromname = ecatalloc(fromname, "/"); 591 fromname = ecatalloc(fromname, fromfile); 592 } 593 if (tofile[0] == '/') 594 toname = ecpyalloc(tofile); 595 else { 596 toname = ecpyalloc(directory); 597 toname = ecatalloc(toname, "/"); 598 toname = ecatalloc(toname, tofile); 599 } 600 /* 601 ** We get to be careful here since 602 ** there's a fair chance of root running us. 603 */ 604 if (!itsdir(toname)) 605 (void) remove(toname); 606 if (link(fromname, toname) != 0) { 607 int result; 608 609 if (mkdirs(toname) != 0) 610 (void) exit(EXIT_FAILURE); 611 result = link(fromname, toname); 612#if (HAVE_SYMLINK - 0) 613 if (result != 0) { 614 result = symlink(fromname, toname); 615 if (result == 0) 616warning(_("hard link failed, symbolic link used")); 617 } 618#endif 619 if (result != 0) { 620 err(EXIT_FAILURE, _("can't link from %s to %s"), 621 fromname, toname); 622 } 623 } 624 ifree(fromname); 625 ifree(toname); 626} 627 628#ifndef INT_MAX 629#define INT_MAX ((int) (((unsigned)~0)>>1)) 630#endif /* !defined INT_MAX */ 631 632#ifndef INT_MIN 633#define INT_MIN ((int) ~(((unsigned)~0)>>1)) 634#endif /* !defined INT_MIN */ 635 636/* 637** The tz file format currently allows at most 32-bit quantities. 638** This restriction should be removed before signed 32-bit values 639** wrap around in 2038, but unfortunately this will require a 640** change to the tz file format. 641*/ 642 643#define MAX_BITS_IN_FILE 32 644#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) 645 646static void 647setboundaries P((void)) 648{ 649 if (TYPE_SIGNED(time_t)) { 650 min_time = ~ (time_t) 0; 651 min_time <<= TIME_T_BITS_IN_FILE - 1; 652 max_time = ~ (time_t) 0 - min_time; 653 if (sflag) 654 min_time = 0; 655 } else { 656 min_time = 0; 657 max_time = 2 - sflag; 658 max_time <<= TIME_T_BITS_IN_FILE - 1; 659 --max_time; 660 } 661 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; 662 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; 663 min_year_representable = min_year; 664 max_year_representable = max_year; 665} 666 667static int 668itsdir(name) 669const char * const name; 670{ 671 register char * myname; 672 register int accres; 673 674 myname = ecpyalloc(name); 675 myname = ecatalloc(myname, "/."); 676 accres = access(myname, F_OK); 677 ifree(myname); 678 return accres == 0; 679} 680 681/* 682** Associate sets of rules with zones. 683*/ 684 685/* 686** Sort by rule name. 687*/ 688 689static int 690rcomp(cp1, cp2) 691const void * cp1; 692const void * cp2; 693{ 694 return strcmp(((const struct rule *) cp1)->r_name, 695 ((const struct rule *) cp2)->r_name); 696} 697 698static void 699associate P((void)) 700{ 701 register struct zone * zp; 702 register struct rule * rp; 703 register int base, out; 704 register int i, j; 705 706 if (nrules != 0) { 707 (void) qsort((void *) rules, (size_t) nrules, 708 (size_t) sizeof *rules, rcomp); 709 for (i = 0; i < nrules - 1; ++i) { 710 if (strcmp(rules[i].r_name, 711 rules[i + 1].r_name) != 0) 712 continue; 713 if (strcmp(rules[i].r_filename, 714 rules[i + 1].r_filename) == 0) 715 continue; 716 eat(rules[i].r_filename, rules[i].r_linenum); 717 warning(_("same rule name in multiple files")); 718 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); 719 warning(_("same rule name in multiple files")); 720 for (j = i + 2; j < nrules; ++j) { 721 if (strcmp(rules[i].r_name, 722 rules[j].r_name) != 0) 723 break; 724 if (strcmp(rules[i].r_filename, 725 rules[j].r_filename) == 0) 726 continue; 727 if (strcmp(rules[i + 1].r_filename, 728 rules[j].r_filename) == 0) 729 continue; 730 break; 731 } 732 i = j - 1; 733 } 734 } 735 for (i = 0; i < nzones; ++i) { 736 zp = &zones[i]; 737 zp->z_rules = NULL; 738 zp->z_nrules = 0; 739 } 740 for (base = 0; base < nrules; base = out) { 741 rp = &rules[base]; 742 for (out = base + 1; out < nrules; ++out) 743 if (strcmp(rp->r_name, rules[out].r_name) != 0) 744 break; 745 for (i = 0; i < nzones; ++i) { 746 zp = &zones[i]; 747 if (strcmp(zp->z_rule, rp->r_name) != 0) 748 continue; 749 zp->z_rules = rp; 750 zp->z_nrules = out - base; 751 } 752 } 753 for (i = 0; i < nzones; ++i) { 754 zp = &zones[i]; 755 if (zp->z_nrules == 0) { 756 /* 757 ** Maybe we have a local standard time offset. 758 */ 759 eat(zp->z_filename, zp->z_linenum); 760 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), 761 TRUE); 762 /* 763 ** Note, though, that if there's no rule, 764 ** a '%s' in the format is a bad thing. 765 */ 766 if (strchr(zp->z_format, '%') != 0) 767 error(_("%s in ruleless zone")); 768 } 769 } 770 if (errors) 771 (void) exit(EXIT_FAILURE); 772} 773 774static void 775infile(name) 776const char * name; 777{ 778 register FILE * fp; 779 register char ** fields; 780 register char * cp; 781 register const struct lookup * lp; 782 register int nfields; 783 register int wantcont; 784 register int num; 785 char buf[BUFSIZ]; 786 787 if (strcmp(name, "-") == 0) { 788 name = _("standard input"); 789 fp = stdin; 790 } else if ((fp = fopen(name, "r")) == NULL) 791 err(EXIT_FAILURE, _("can't open %s"), name); 792 wantcont = FALSE; 793 for (num = 1; ; ++num) { 794 eat(name, num); 795 if (fgets(buf, (int) sizeof buf, fp) != buf) 796 break; 797 cp = strchr(buf, '\n'); 798 if (cp == NULL) { 799 error(_("line too long")); 800 (void) exit(EXIT_FAILURE); 801 } 802 *cp = '\0'; 803 fields = getfields(buf); 804 nfields = 0; 805 while (fields[nfields] != NULL) { 806 static char nada; 807 808 if (strcmp(fields[nfields], "-") == 0) 809 fields[nfields] = &nada; 810 ++nfields; 811 } 812 if (nfields == 0) { 813 /* nothing to do */ 814 } else if (wantcont) { 815 wantcont = inzcont(fields, nfields); 816 } else { 817 lp = byword(fields[0], line_codes); 818 if (lp == NULL) 819 error(_("input line of unknown type")); 820 else switch ((int) (lp->l_value)) { 821 case LC_RULE: 822 inrule(fields, nfields); 823 wantcont = FALSE; 824 break; 825 case LC_ZONE: 826 wantcont = inzone(fields, nfields); 827 break; 828 case LC_LINK: 829 inlink(fields, nfields); 830 wantcont = FALSE; 831 break; 832 case LC_LEAP: 833 if (name != leapsec) 834 warnx( 835_("leap line in non leap seconds file %s"), name); 836 else inleap(fields, nfields); 837 wantcont = FALSE; 838 break; 839 default: /* "cannot happen" */ 840 errx(EXIT_FAILURE, 841_("panic: invalid l_value %d"), lp->l_value); 842 } 843 } 844 ifree((char *) fields); 845 } 846 if (ferror(fp)) 847 errx(EXIT_FAILURE, _("error reading %s"), filename); 848 if (fp != stdin && fclose(fp)) 849 err(EXIT_FAILURE, _("error closing %s"), filename); 850 if (wantcont) 851 error(_("expected continuation line not found")); 852} 853 854/* 855** Convert a string of one of the forms 856** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss 857** into a number of seconds. 858** A null string maps to zero. 859** Call error with errstring and return zero on errors. 860*/ 861 862static long 863gethms(string, errstring, signable) 864const char * string; 865const char * const errstring; 866const int signable; 867{ 868 int hh, mm, ss, sign; 869 870 if (string == NULL || *string == '\0') 871 return 0; 872 if (!signable) 873 sign = 1; 874 else if (*string == '-') { 875 sign = -1; 876 ++string; 877 } else sign = 1; 878 if (sscanf(string, scheck(string, "%d"), &hh) == 1) 879 mm = ss = 0; 880 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) 881 ss = 0; 882 else if (sscanf(string, scheck(string, "%d:%d:%d"), 883 &hh, &mm, &ss) != 3) { 884 error(errstring); 885 return 0; 886 } 887 if ((hh < 0 || hh >= HOURSPERDAY || 888 mm < 0 || mm >= MINSPERHOUR || 889 ss < 0 || ss > SECSPERMIN) && 890 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) { 891 error(errstring); 892 return 0; 893 } 894 return eitol(sign) * 895 (eitol(hh * MINSPERHOUR + mm) * 896 eitol(SECSPERMIN) + eitol(ss)); 897} 898 899static void 900inrule(fields, nfields) 901register char ** const fields; 902const int nfields; 903{ 904 static struct rule r; 905 906 if (nfields != RULE_FIELDS) { 907 error(_("wrong number of fields on Rule line")); 908 return; 909 } 910 if (*fields[RF_NAME] == '\0') { 911 error(_("nameless rule")); 912 return; 913 } 914 r.r_filename = filename; 915 r.r_linenum = linenum; 916 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); 917 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], 918 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); 919 r.r_name = ecpyalloc(fields[RF_NAME]); 920 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); 921 rules = (struct rule *) (void *) erealloc((char *) rules, 922 (int) ((nrules + 1) * sizeof *rules)); 923 rules[nrules++] = r; 924} 925 926static int 927inzone(fields, nfields) 928register char ** const fields; 929const int nfields; 930{ 931 register int i; 932 static char * buf; 933 934 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { 935 error(_("wrong number of fields on Zone line")); 936 return FALSE; 937 } 938 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { 939 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); 940 (void) sprintf(buf, 941_("\"Zone %s\" line and -l option are mutually exclusive"), 942 TZDEFAULT); 943 error(buf); 944 return FALSE; 945 } 946 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { 947 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); 948 (void) sprintf(buf, 949_("\"Zone %s\" line and -p option are mutually exclusive"), 950 TZDEFRULES); 951 error(buf); 952 return FALSE; 953 } 954 for (i = 0; i < nzones; ++i) 955 if (zones[i].z_name != NULL && 956 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { 957 buf = erealloc(buf, (int) (132 + 958 strlen(fields[ZF_NAME]) + 959 strlen(zones[i].z_filename))); 960 (void) sprintf(buf, 961_("duplicate zone name %s (file \"%s\", line %d)"), 962 fields[ZF_NAME], 963 zones[i].z_filename, 964 zones[i].z_linenum); 965 error(buf); 966 return FALSE; 967 } 968 return inzsub(fields, nfields, FALSE); 969} 970 971static int 972inzcont(fields, nfields) 973register char ** const fields; 974const int nfields; 975{ 976 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { 977 error(_("wrong number of fields on Zone continuation line")); 978 return FALSE; 979 } 980 return inzsub(fields, nfields, TRUE); 981} 982 983static int 984inzsub(fields, nfields, iscont) 985register char ** const fields; 986const int nfields; 987const int iscont; 988{ 989 register char * cp; 990 static struct zone z; 991 register int i_gmtoff, i_rule, i_format; 992 register int i_untilyear, i_untilmonth; 993 register int i_untilday, i_untiltime; 994 register int hasuntil; 995 996 if (iscont) { 997 i_gmtoff = ZFC_GMTOFF; 998 i_rule = ZFC_RULE; 999 i_format = ZFC_FORMAT; 1000 i_untilyear = ZFC_TILYEAR; 1001 i_untilmonth = ZFC_TILMONTH; 1002 i_untilday = ZFC_TILDAY; 1003 i_untiltime = ZFC_TILTIME; 1004 z.z_name = NULL; 1005 } else { 1006 i_gmtoff = ZF_GMTOFF; 1007 i_rule = ZF_RULE; 1008 i_format = ZF_FORMAT; 1009 i_untilyear = ZF_TILYEAR; 1010 i_untilmonth = ZF_TILMONTH; 1011 i_untilday = ZF_TILDAY; 1012 i_untiltime = ZF_TILTIME; 1013 z.z_name = ecpyalloc(fields[ZF_NAME]); 1014 } 1015 z.z_filename = filename; 1016 z.z_linenum = linenum; 1017 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE); 1018 if ((cp = strchr(fields[i_format], '%')) != 0) { 1019 if (*++cp != 's' || strchr(cp, '%') != 0) { 1020 error(_("invalid abbreviation format")); 1021 return FALSE; 1022 } 1023 } 1024 z.z_rule = ecpyalloc(fields[i_rule]); 1025 z.z_format = ecpyalloc(fields[i_format]); 1026 hasuntil = nfields > i_untilyear; 1027 if (hasuntil) { 1028 z.z_untilrule.r_filename = filename; 1029 z.z_untilrule.r_linenum = linenum; 1030 rulesub(&z.z_untilrule, 1031 fields[i_untilyear], 1032 "only", 1033 "", 1034 (nfields > i_untilmonth) ? 1035 fields[i_untilmonth] : "Jan", 1036 (nfields > i_untilday) ? fields[i_untilday] : "1", 1037 (nfields > i_untiltime) ? fields[i_untiltime] : "0"); 1038 z.z_untiltime = rpytime(&z.z_untilrule, 1039 z.z_untilrule.r_loyear); 1040 if (iscont && nzones > 0 && 1041 z.z_untiltime > min_time && 1042 z.z_untiltime < max_time && 1043 zones[nzones - 1].z_untiltime > min_time && 1044 zones[nzones - 1].z_untiltime < max_time && 1045 zones[nzones - 1].z_untiltime >= z.z_untiltime) { 1046 error(_("Zone continuation line end time is not after end time of previous line")); 1047 return FALSE; 1048 } 1049 } 1050 zones = (struct zone *) (void *) erealloc((char *) zones, 1051 (int) ((nzones + 1) * sizeof *zones)); 1052 zones[nzones++] = z; 1053 /* 1054 ** If there was an UNTIL field on this line, 1055 ** there's more information about the zone on the next line. 1056 */ 1057 return hasuntil; 1058} 1059 1060static void 1061inleap(fields, nfields) 1062register char ** const fields; 1063const int nfields; 1064{ 1065 register const char * cp; 1066 register const struct lookup * lp; 1067 register int i, j; 1068 int year, month, day; 1069 long dayoff, tod; 1070 time_t t; 1071 1072 if (nfields != LEAP_FIELDS) { 1073 error(_("wrong number of fields on Leap line")); 1074 return; 1075 } 1076 dayoff = 0; 1077 cp = fields[LP_YEAR]; 1078 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { 1079 /* 1080 * Leapin' Lizards! 1081 */ 1082 error(_("invalid leaping year")); 1083 return; 1084 } 1085 j = EPOCH_YEAR; 1086 while (j != year) { 1087 if (year > j) { 1088 i = len_years[isleap(j)]; 1089 ++j; 1090 } else { 1091 --j; 1092 i = -len_years[isleap(j)]; 1093 } 1094 dayoff = oadd(dayoff, eitol(i)); 1095 } 1096 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { 1097 error(_("invalid month name")); 1098 return; 1099 } 1100 month = lp->l_value; 1101 j = TM_JANUARY; 1102 while (j != month) { 1103 i = len_months[isleap(year)][j]; 1104 dayoff = oadd(dayoff, eitol(i)); 1105 ++j; 1106 } 1107 cp = fields[LP_DAY]; 1108 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || 1109 day <= 0 || day > len_months[isleap(year)][month]) { 1110 error(_("invalid day of month")); 1111 return; 1112 } 1113 dayoff = oadd(dayoff, eitol(day - 1)); 1114 if (dayoff < 0 && !TYPE_SIGNED(time_t)) { 1115 error(_("time before zero")); 1116 return; 1117 } 1118 t = (time_t) dayoff * SECSPERDAY; 1119 /* 1120 ** Cheap overflow check. 1121 */ 1122 if (t / SECSPERDAY != dayoff) { 1123 error(_("time overflow")); 1124 return; 1125 } 1126 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1127 cp = fields[LP_CORR]; 1128 { 1129 register int positive; 1130 int count; 1131 1132 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1133 positive = FALSE; 1134 count = 1; 1135 } else if (strcmp(cp, "--") == 0) { 1136 positive = FALSE; 1137 count = 2; 1138 } else if (strcmp(cp, "+") == 0) { 1139 positive = TRUE; 1140 count = 1; 1141 } else if (strcmp(cp, "++") == 0) { 1142 positive = TRUE; 1143 count = 2; 1144 } else { 1145 error(_("illegal CORRECTION field on Leap line")); 1146 return; 1147 } 1148 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1149 error(_("illegal Rolling/Stationary field on Leap line")); 1150 return; 1151 } 1152 leapadd(tadd(t, tod), positive, lp->l_value, count); 1153 } 1154} 1155 1156static void 1157inlink(fields, nfields) 1158register char ** const fields; 1159const int nfields; 1160{ 1161 struct link l; 1162 1163 if (nfields != LINK_FIELDS) { 1164 error(_("wrong number of fields on Link line")); 1165 return; 1166 } 1167 if (*fields[LF_FROM] == '\0') { 1168 error(_("blank FROM field on Link line")); 1169 return; 1170 } 1171 if (*fields[LF_TO] == '\0') { 1172 error(_("blank TO field on Link line")); 1173 return; 1174 } 1175 l.l_filename = filename; 1176 l.l_linenum = linenum; 1177 l.l_from = ecpyalloc(fields[LF_FROM]); 1178 l.l_to = ecpyalloc(fields[LF_TO]); 1179 links = (struct link *) (void *) erealloc((char *) links, 1180 (int) ((nlinks + 1) * sizeof *links)); 1181 links[nlinks++] = l; 1182} 1183 1184static void 1185rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1186register struct rule * const rp; 1187const char * const loyearp; 1188const char * const hiyearp; 1189const char * const typep; 1190const char * const monthp; 1191const char * const dayp; 1192const char * const timep; 1193{ 1194 register const struct lookup * lp; 1195 register const char * cp; 1196 register char * dp; 1197 register char * ep; 1198 1199 if ((lp = byword(monthp, mon_names)) == NULL) { 1200 error(_("invalid month name")); 1201 return; 1202 } 1203 rp->r_month = lp->l_value; 1204 rp->r_todisstd = FALSE; 1205 rp->r_todisgmt = FALSE; 1206 dp = ecpyalloc(timep); 1207 if (*dp != '\0') { 1208 ep = dp + strlen(dp) - 1; 1209 switch (lowerit(*ep)) { 1210 case 's': /* Standard */ 1211 rp->r_todisstd = TRUE; 1212 rp->r_todisgmt = FALSE; 1213 *ep = '\0'; 1214 break; 1215 case 'w': /* Wall */ 1216 rp->r_todisstd = FALSE; 1217 rp->r_todisgmt = FALSE; 1218 *ep = '\0'; 1219 break; 1220 case 'g': /* Greenwich */ 1221 case 'u': /* Universal */ 1222 case 'z': /* Zulu */ 1223 rp->r_todisstd = TRUE; 1224 rp->r_todisgmt = TRUE; 1225 *ep = '\0'; 1226 break; 1227 } 1228 } 1229 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1230 ifree(dp); 1231 /* 1232 ** Year work. 1233 */ 1234 cp = loyearp; 1235 lp = byword(cp, begin_years); 1236 if (lp != NULL) switch ((int) lp->l_value) { 1237 case YR_MINIMUM: 1238 rp->r_loyear = INT_MIN; 1239 break; 1240 case YR_MAXIMUM: 1241 rp->r_loyear = INT_MAX; 1242 break; 1243 default: /* "cannot happen" */ 1244 errx(EXIT_FAILURE, 1245 _("panic: invalid l_value %d"), lp->l_value); 1246 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { 1247 error(_("invalid starting year")); 1248 return; 1249 } else if (noise) { 1250 if (rp->r_loyear < min_year_representable) 1251 warning(_("starting year too low to be represented")); 1252 else if (rp->r_loyear > max_year_representable) 1253 warning(_("starting year too high to be represented")); 1254 } 1255 cp = hiyearp; 1256 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1257 case YR_MINIMUM: 1258 rp->r_hiyear = INT_MIN; 1259 break; 1260 case YR_MAXIMUM: 1261 rp->r_hiyear = INT_MAX; 1262 break; 1263 case YR_ONLY: 1264 rp->r_hiyear = rp->r_loyear; 1265 break; 1266 default: /* "cannot happen" */ 1267 errx(EXIT_FAILURE, 1268 _("panic: invalid l_value %d"), lp->l_value); 1269 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1270 error(_("invalid ending year")); 1271 return; 1272 } else if (noise) { 1273 if (rp->r_loyear < min_year_representable) 1274 warning(_("starting year too low to be represented")); 1275 else if (rp->r_loyear > max_year_representable) 1276 warning(_("starting year too high to be represented")); 1277 } 1278 if (rp->r_loyear > rp->r_hiyear) { 1279 error(_("starting year greater than ending year")); 1280 return; 1281 } 1282 if (*typep == '\0') 1283 rp->r_yrtype = NULL; 1284 else { 1285 if (rp->r_loyear == rp->r_hiyear) { 1286 error(_("typed single year")); 1287 return; 1288 } 1289 rp->r_yrtype = ecpyalloc(typep); 1290 } 1291 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1292 min_year = rp->r_loyear; 1293 /* 1294 ** Day work. 1295 ** Accept things such as: 1296 ** 1 1297 ** last-Sunday 1298 ** Sun<=20 1299 ** Sun>=7 1300 */ 1301 dp = ecpyalloc(dayp); 1302 if ((lp = byword(dp, lasts)) != NULL) { 1303 rp->r_dycode = DC_DOWLEQ; 1304 rp->r_wday = lp->l_value; 1305 rp->r_dayofmonth = len_months[1][rp->r_month]; 1306 } else { 1307 if ((ep = strchr(dp, '<')) != 0) 1308 rp->r_dycode = DC_DOWLEQ; 1309 else if ((ep = strchr(dp, '>')) != 0) 1310 rp->r_dycode = DC_DOWGEQ; 1311 else { 1312 ep = dp; 1313 rp->r_dycode = DC_DOM; 1314 } 1315 if (rp->r_dycode != DC_DOM) { 1316 *ep++ = 0; 1317 if (*ep++ != '=') { 1318 error(_("invalid day of month")); 1319 ifree(dp); 1320 return; 1321 } 1322 if ((lp = byword(dp, wday_names)) == NULL) { 1323 error(_("invalid weekday name")); 1324 ifree(dp); 1325 return; 1326 } 1327 rp->r_wday = lp->l_value; 1328 } 1329 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1330 rp->r_dayofmonth <= 0 || 1331 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1332 error(_("invalid day of month")); 1333 ifree(dp); 1334 return; 1335 } 1336 } 1337 ifree(dp); 1338} 1339 1340static void 1341convert(val, buf) 1342const long val; 1343char * const buf; 1344{ 1345 register int i; 1346 register long shift; 1347 1348 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1349 buf[i] = val >> shift; 1350} 1351 1352static void 1353puttzcode(val, fp) 1354const long val; 1355FILE * const fp; 1356{ 1357 char buf[4]; 1358 1359 convert(val, buf); 1360 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1361} 1362 1363static int 1364atcomp(avp, bvp) 1365const void * avp; 1366const void * bvp; 1367{ 1368 if (((const struct attype *) avp)->at < 1369 ((const struct attype *) bvp)->at) 1370 return -1; 1371 else if (((const struct attype *) avp)->at > 1372 ((const struct attype *) bvp)->at) 1373 return 1; 1374 else return 0; 1375} 1376 1377static void 1378writezone(name) 1379const char * const name; 1380{ 1381 register FILE * fp; 1382 register int i, j; 1383 static char * fullname; 1384 static struct tzhead tzh; 1385 time_t ats[TZ_MAX_TIMES]; 1386 unsigned char types[TZ_MAX_TIMES]; 1387 1388 /* 1389 ** Sort. 1390 */ 1391 if (timecnt > 1) 1392 (void) qsort((void *) attypes, (size_t) timecnt, 1393 (size_t) sizeof *attypes, atcomp); 1394 /* 1395 ** Optimize. 1396 */ 1397 { 1398 int fromi; 1399 int toi; 1400 1401 toi = 0; 1402 fromi = 0; 1403 while (fromi < timecnt && attypes[fromi].at < min_time) 1404 ++fromi; 1405 if (isdsts[0] == 0) 1406 while (fromi < timecnt && attypes[fromi].type == 0) 1407 ++fromi; /* handled by default rule */ 1408 for ( ; fromi < timecnt; ++fromi) { 1409 if (toi != 0 1410 && ((attypes[fromi].at 1411 + gmtoffs[attypes[toi - 1].type]) 1412 <= (attypes[toi - 1].at 1413 + gmtoffs[toi == 1 ? 0 1414 : attypes[toi - 2].type]))) { 1415 attypes[toi - 1].type = attypes[fromi].type; 1416 continue; 1417 } 1418 if (toi == 0 || 1419 attypes[toi - 1].type != attypes[fromi].type) 1420 attypes[toi++] = attypes[fromi]; 1421 } 1422 timecnt = toi; 1423 } 1424 /* 1425 ** Transfer. 1426 */ 1427 for (i = 0; i < timecnt; ++i) { 1428 ats[i] = attypes[i].at; 1429 types[i] = attypes[i].type; 1430 } 1431 fullname = erealloc(fullname, 1432 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1433 (void) sprintf(fullname, "%s/%s", directory, name); 1434 1435 /* 1436 * Remove old file, if any, to snap links. 1437 */ 1438 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) 1439 err(EXIT_FAILURE, _("can't remove %s"), fullname); 1440 1441 if ((fp = fopen(fullname, "wb")) == NULL) { 1442 if (mkdirs(fullname) != 0) 1443 (void) exit(EXIT_FAILURE); 1444 if ((fp = fopen(fullname, "wb")) == NULL) 1445 err(EXIT_FAILURE, _("can't create %s"), fullname); 1446 } 1447 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1448 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1449 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1450 convert(eitol(timecnt), tzh.tzh_timecnt); 1451 convert(eitol(typecnt), tzh.tzh_typecnt); 1452 convert(eitol(charcnt), tzh.tzh_charcnt); 1453 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); 1454#define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1455 DO(tzh_magic); 1456 DO(tzh_reserved); 1457 DO(tzh_ttisgmtcnt); 1458 DO(tzh_ttisstdcnt); 1459 DO(tzh_leapcnt); 1460 DO(tzh_timecnt); 1461 DO(tzh_typecnt); 1462 DO(tzh_charcnt); 1463#undef DO 1464 for (i = 0; i < timecnt; ++i) { 1465 j = leapcnt; 1466 while (--j >= 0) 1467 if (ats[i] >= trans[j]) { 1468 ats[i] = tadd(ats[i], corr[j]); 1469 break; 1470 } 1471 puttzcode((long) ats[i], fp); 1472 } 1473 if (timecnt > 0) 1474 (void) fwrite((void *) types, (size_t) sizeof types[0], 1475 (size_t) timecnt, fp); 1476 for (i = 0; i < typecnt; ++i) { 1477 puttzcode((long) gmtoffs[i], fp); 1478 (void) putc(isdsts[i], fp); 1479 (void) putc(abbrinds[i], fp); 1480 } 1481 if (charcnt != 0) 1482 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1483 (size_t) charcnt, fp); 1484 for (i = 0; i < leapcnt; ++i) { 1485 if (roll[i]) { 1486 if (timecnt == 0 || trans[i] < ats[0]) { 1487 j = 0; 1488 while (isdsts[j]) 1489 if (++j >= typecnt) { 1490 j = 0; 1491 break; 1492 } 1493 } else { 1494 j = 1; 1495 while (j < timecnt && trans[i] >= ats[j]) 1496 ++j; 1497 j = types[j - 1]; 1498 } 1499 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1500 } else puttzcode((long) trans[i], fp); 1501 puttzcode((long) corr[i], fp); 1502 } 1503 for (i = 0; i < typecnt; ++i) 1504 (void) putc(ttisstds[i], fp); 1505 for (i = 0; i < typecnt; ++i) 1506 (void) putc(ttisgmts[i], fp); 1507 if (ferror(fp) || fclose(fp)) 1508 errx(EXIT_FAILURE, _("error writing %s"), fullname); 1509 if (chmod(fullname, mflag) < 0) 1510 err(EXIT_FAILURE, _("cannot change mode of %s to %03o"), 1511 fullname, (unsigned)mflag); 1512 if ((uflag != (uid_t)-1 || gflag != (gid_t)-1) 1513 && chown(fullname, uflag, gflag) < 0) 1514 err(EXIT_FAILURE, _("cannot change ownership of %s"), 1515 fullname); 1516} 1517 1518static void 1519doabbr(abbr, format, letters, isdst) 1520char * const abbr; 1521const char * const format; 1522const char * const letters; 1523const int isdst; 1524{ 1525 if (strchr(format, '/') == NULL) { 1526 if (letters == NULL) 1527 (void) strcpy(abbr, format); 1528 else (void) sprintf(abbr, format, letters); 1529 } else if (isdst) 1530 (void) strcpy(abbr, strchr(format, '/') + 1); 1531 else { 1532 (void) strcpy(abbr, format); 1533 *strchr(abbr, '/') = '\0'; 1534 } 1535} 1536 1537static void 1538outzone(zpfirst, zonecount) 1539const struct zone * const zpfirst; 1540const int zonecount; 1541{ 1542 register const struct zone * zp; 1543 register struct rule * rp; 1544 register int i, j; 1545 register int usestart, useuntil; 1546 register time_t starttime, untiltime; 1547 register long gmtoff; 1548 register long stdoff; 1549 register int year; 1550 register long startoff; 1551 register int startttisstd; 1552 register int startttisgmt; 1553 register int type; 1554 char startbuf[BUFSIZ]; 1555 1556 INITIALIZE(untiltime); 1557 INITIALIZE(starttime); 1558 /* 1559 ** Now. . .finally. . .generate some useful data! 1560 */ 1561 timecnt = 0; 1562 typecnt = 0; 1563 charcnt = 0; 1564 /* 1565 ** A guess that may well be corrected later. 1566 */ 1567 stdoff = 0; 1568 /* 1569 ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au) 1570 ** for noting the need to unconditionally initialize startttisstd. 1571 */ 1572 startttisstd = FALSE; 1573 startttisgmt = FALSE; 1574 for (i = 0; i < zonecount; ++i) { 1575 zp = &zpfirst[i]; 1576 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1577 useuntil = i < (zonecount - 1); 1578 if (useuntil && zp->z_untiltime <= min_time) 1579 continue; 1580 gmtoff = zp->z_gmtoff; 1581 eat(zp->z_filename, zp->z_linenum); 1582 *startbuf = '\0'; 1583 startoff = zp->z_gmtoff; 1584 if (zp->z_nrules == 0) { 1585 stdoff = zp->z_stdoff; 1586 doabbr(startbuf, zp->z_format, 1587 (char *) NULL, stdoff != 0); 1588 type = addtype(oadd(zp->z_gmtoff, stdoff), 1589 startbuf, stdoff != 0, startttisstd, 1590 startttisgmt); 1591 if (usestart) { 1592 addtt(starttime, type); 1593 usestart = FALSE; 1594 } 1595 else if (stdoff != 0) 1596 addtt(min_time, type); 1597 } else for (year = min_year; year <= max_year; ++year) { 1598 if (useuntil && year > zp->z_untilrule.r_hiyear) 1599 break; 1600 /* 1601 ** Mark which rules to do in the current year. 1602 ** For those to do, calculate rpytime(rp, year); 1603 */ 1604 for (j = 0; j < zp->z_nrules; ++j) { 1605 rp = &zp->z_rules[j]; 1606 eats(zp->z_filename, zp->z_linenum, 1607 rp->r_filename, rp->r_linenum); 1608 rp->r_todo = year >= rp->r_loyear && 1609 year <= rp->r_hiyear && 1610 yearistype(year, rp->r_yrtype); 1611 if (rp->r_todo) 1612 rp->r_temp = rpytime(rp, year); 1613 } 1614 for ( ; ; ) { 1615 register int k; 1616 register time_t jtime, ktime; 1617 register long offset; 1618 char buf[BUFSIZ]; 1619 1620 INITIALIZE(ktime); 1621 if (useuntil) { 1622 /* 1623 ** Turn untiltime into UTC 1624 ** assuming the current gmtoff and 1625 ** stdoff values. 1626 */ 1627 untiltime = zp->z_untiltime; 1628 if (!zp->z_untilrule.r_todisgmt) 1629 untiltime = tadd(untiltime, 1630 -gmtoff); 1631 if (!zp->z_untilrule.r_todisstd) 1632 untiltime = tadd(untiltime, 1633 -stdoff); 1634 } 1635 /* 1636 ** Find the rule (of those to do, if any) 1637 ** that takes effect earliest in the year. 1638 */ 1639 k = -1; 1640 for (j = 0; j < zp->z_nrules; ++j) { 1641 rp = &zp->z_rules[j]; 1642 if (!rp->r_todo) 1643 continue; 1644 eats(zp->z_filename, zp->z_linenum, 1645 rp->r_filename, rp->r_linenum); 1646 offset = rp->r_todisgmt ? 0 : gmtoff; 1647 if (!rp->r_todisstd) 1648 offset = oadd(offset, stdoff); 1649 jtime = rp->r_temp; 1650 if (jtime == min_time || 1651 jtime == max_time) 1652 continue; 1653 jtime = tadd(jtime, -offset); 1654 if (k < 0 || jtime < ktime) { 1655 k = j; 1656 ktime = jtime; 1657 } 1658 } 1659 if (k < 0) 1660 break; /* go on to next year */ 1661 rp = &zp->z_rules[k]; 1662 rp->r_todo = FALSE; 1663 if (useuntil && ktime >= untiltime) 1664 break; 1665 stdoff = rp->r_stdoff; 1666 if (usestart && ktime == starttime) 1667 usestart = FALSE; 1668 if (usestart) { 1669 if (ktime < starttime) { 1670 startoff = oadd(zp->z_gmtoff, 1671 stdoff); 1672 doabbr(startbuf, zp->z_format, 1673 rp->r_abbrvar, 1674 rp->r_stdoff != 0); 1675 continue; 1676 } 1677 if (*startbuf == '\0' && 1678 startoff == oadd(zp->z_gmtoff, 1679 stdoff)) { 1680 doabbr(startbuf, zp->z_format, 1681 rp->r_abbrvar, 1682 rp->r_stdoff != 0); 1683 } 1684 } 1685 eats(zp->z_filename, zp->z_linenum, 1686 rp->r_filename, rp->r_linenum); 1687 doabbr(buf, zp->z_format, rp->r_abbrvar, 1688 rp->r_stdoff != 0); 1689 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1690 type = addtype(offset, buf, rp->r_stdoff != 0, 1691 rp->r_todisstd, rp->r_todisgmt); 1692 addtt(ktime, type); 1693 } 1694 } 1695 if (usestart) { 1696 if (*startbuf == '\0' && 1697 zp->z_format != NULL && 1698 strchr(zp->z_format, '%') == NULL && 1699 strchr(zp->z_format, '/') == NULL) 1700 (void) strcpy(startbuf, zp->z_format); 1701 eat(zp->z_filename, zp->z_linenum); 1702 if (*startbuf == '\0') 1703error(_("can't determine time zone abbreviation to use just after until time")); 1704 else addtt(starttime, 1705 addtype(startoff, startbuf, 1706 startoff != zp->z_gmtoff, 1707 startttisstd, 1708 startttisgmt)); 1709 } 1710 /* 1711 ** Now we may get to set starttime for the next zone line. 1712 */ 1713 if (useuntil) { 1714 startttisstd = zp->z_untilrule.r_todisstd; 1715 startttisgmt = zp->z_untilrule.r_todisgmt; 1716 starttime = zp->z_untiltime; 1717 if (!startttisstd) 1718 starttime = tadd(starttime, -stdoff); 1719 if (!startttisgmt) 1720 starttime = tadd(starttime, -gmtoff); 1721 } 1722 } 1723 writezone(zpfirst->z_name); 1724} 1725 1726static void 1727addtt(starttime, type) 1728const time_t starttime; 1729int type; 1730{ 1731 if (starttime <= min_time || 1732 (timecnt == 1 && attypes[0].at < min_time)) { 1733 gmtoffs[0] = gmtoffs[type]; 1734 isdsts[0] = isdsts[type]; 1735 ttisstds[0] = ttisstds[type]; 1736 ttisgmts[0] = ttisgmts[type]; 1737 if (abbrinds[type] != 0) 1738 (void) strcpy(chars, &chars[abbrinds[type]]); 1739 abbrinds[0] = 0; 1740 charcnt = strlen(chars) + 1; 1741 typecnt = 1; 1742 timecnt = 0; 1743 type = 0; 1744 } 1745 if (timecnt >= TZ_MAX_TIMES) { 1746 error(_("too many transitions?!")); 1747 (void) exit(EXIT_FAILURE); 1748 } 1749 attypes[timecnt].at = starttime; 1750 attypes[timecnt].type = type; 1751 ++timecnt; 1752} 1753 1754static int 1755addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1756const long gmtoff; 1757const char * const abbr; 1758const int isdst; 1759const int ttisstd; 1760const int ttisgmt; 1761{ 1762 register int i, j; 1763 1764 if (isdst != TRUE && isdst != FALSE) { 1765 error(_("internal error - addtype called with bad isdst")); 1766 (void) exit(EXIT_FAILURE); 1767 } 1768 if (ttisstd != TRUE && ttisstd != FALSE) { 1769 error(_("internal error - addtype called with bad ttisstd")); 1770 (void) exit(EXIT_FAILURE); 1771 } 1772 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1773 error(_("internal error - addtype called with bad ttisgmt")); 1774 (void) exit(EXIT_FAILURE); 1775 } 1776 /* 1777 ** See if there's already an entry for this zone type. 1778 ** If so, just return its index. 1779 */ 1780 for (i = 0; i < typecnt; ++i) { 1781 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1782 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1783 ttisstd == ttisstds[i] && 1784 ttisgmt == ttisgmts[i]) 1785 return i; 1786 } 1787 /* 1788 ** There isn't one; add a new one, unless there are already too 1789 ** many. 1790 */ 1791 if (typecnt >= TZ_MAX_TYPES) { 1792 error(_("too many local time types")); 1793 (void) exit(EXIT_FAILURE); 1794 } 1795 gmtoffs[i] = gmtoff; 1796 isdsts[i] = isdst; 1797 ttisstds[i] = ttisstd; 1798 ttisgmts[i] = ttisgmt; 1799 1800 for (j = 0; j < charcnt; ++j) 1801 if (strcmp(&chars[j], abbr) == 0) 1802 break; 1803 if (j == charcnt) 1804 newabbr(abbr); 1805 abbrinds[i] = j; 1806 ++typecnt; 1807 return i; 1808} 1809 1810static void 1811leapadd(t, positive, rolling, count) 1812const time_t t; 1813const int positive; 1814const int rolling; 1815int count; 1816{ 1817 register int i, j; 1818 1819 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1820 error(_("too many leap seconds")); 1821 (void) exit(EXIT_FAILURE); 1822 } 1823 for (i = 0; i < leapcnt; ++i) 1824 if (t <= trans[i]) { 1825 if (t == trans[i]) { 1826 error(_("repeated leap second moment")); 1827 (void) exit(EXIT_FAILURE); 1828 } 1829 break; 1830 } 1831 do { 1832 for (j = leapcnt; j > i; --j) { 1833 trans[j] = trans[j - 1]; 1834 corr[j] = corr[j - 1]; 1835 roll[j] = roll[j - 1]; 1836 } 1837 trans[i] = t; 1838 corr[i] = positive ? 1L : eitol(-count); 1839 roll[i] = rolling; 1840 ++leapcnt; 1841 } while (positive && --count != 0); 1842} 1843 1844static void 1845adjleap P((void)) 1846{ 1847 register int i; 1848 register long last = 0; 1849 1850 /* 1851 ** propagate leap seconds forward 1852 */ 1853 for (i = 0; i < leapcnt; ++i) { 1854 trans[i] = tadd(trans[i], last); 1855 last = corr[i] += last; 1856 } 1857} 1858 1859static int 1860yearistype(year, type) 1861const int year; 1862const char * const type; 1863{ 1864 static char * buf; 1865 int result; 1866 1867 if (type == NULL || *type == '\0') 1868 return TRUE; 1869 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1870 (void) sprintf(buf, "%s %d %s", yitcommand, year, type); 1871 result = system(buf); 1872 if (result == 0) 1873 return TRUE; 1874 if (result == (1 << 8)) 1875 return FALSE; 1876 error(_("wild result from command execution")); 1877 warnx(_("command was '%s', result was %d"), buf, result); 1878 for ( ; ; ) 1879 (void) exit(EXIT_FAILURE); 1880} 1881 1882static int 1883lowerit(a) 1884int a; 1885{ 1886 a = (unsigned char) a; 1887 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1888} 1889 1890static int 1891ciequal(ap, bp) /* case-insensitive equality */ 1892register const char * ap; 1893register const char * bp; 1894{ 1895 while (lowerit(*ap) == lowerit(*bp++)) 1896 if (*ap++ == '\0') 1897 return TRUE; 1898 return FALSE; 1899} 1900 1901static int 1902itsabbr(abbr, word) 1903register const char * abbr; 1904register const char * word; 1905{ 1906 if (lowerit(*abbr) != lowerit(*word)) 1907 return FALSE; 1908 ++word; 1909 while (*++abbr != '\0') 1910 do { 1911 if (*word == '\0') 1912 return FALSE; 1913 } while (lowerit(*word++) != lowerit(*abbr)); 1914 return TRUE; 1915} 1916 1917static const struct lookup * 1918byword(word, table) 1919register const char * const word; 1920register const struct lookup * const table; 1921{ 1922 register const struct lookup * foundlp; 1923 register const struct lookup * lp; 1924 1925 if (word == NULL || table == NULL) 1926 return NULL; 1927 /* 1928 ** Look for exact match. 1929 */ 1930 for (lp = table; lp->l_word != NULL; ++lp) 1931 if (ciequal(word, lp->l_word)) 1932 return lp; 1933 /* 1934 ** Look for inexact match. 1935 */ 1936 foundlp = NULL; 1937 for (lp = table; lp->l_word != NULL; ++lp) 1938 if (itsabbr(word, lp->l_word)) { 1939 if (foundlp == NULL) 1940 foundlp = lp; 1941 else return NULL; /* multiple inexact matches */ 1942 } 1943 return foundlp; 1944} 1945 1946static char ** 1947getfields(cp) 1948register char * cp; 1949{ 1950 register char * dp; 1951 register char ** array; 1952 register int nsubs; 1953 1954 if (cp == NULL) 1955 return NULL; 1956 array = (char **) (void *) 1957 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 1958 nsubs = 0; 1959 for ( ; ; ) { 1960 while (isascii(*cp) && isspace((unsigned char) *cp)) 1961 ++cp; 1962 if (*cp == '\0' || *cp == '#') 1963 break; 1964 array[nsubs++] = dp = cp; 1965 do { 1966 if ((*dp = *cp++) != '"') 1967 ++dp; 1968 else while ((*dp = *cp++) != '"') 1969 if (*dp != '\0') 1970 ++dp; 1971 else error(_("odd number of quotation marks")); 1972 } while (*cp != '\0' && *cp != '#' && 1973 (!isascii(*cp) || !isspace((unsigned char) *cp))); 1974 if (isascii(*cp) && isspace((unsigned char) *cp)) 1975 ++cp; 1976 *dp = '\0'; 1977 } 1978 array[nsubs] = NULL; 1979 return array; 1980} 1981 1982static long 1983oadd(t1, t2) 1984const long t1; 1985const long t2; 1986{ 1987 register long t; 1988 1989 t = t1 + t2; 1990 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 1991 error(_("time overflow")); 1992 (void) exit(EXIT_FAILURE); 1993 } 1994 return t; 1995} 1996 1997static time_t 1998tadd(t1, t2) 1999const time_t t1; 2000const long t2; 2001{ 2002 register time_t t; 2003 2004 if (t1 == max_time && t2 > 0) 2005 return max_time; 2006 if (t1 == min_time && t2 < 0) 2007 return min_time; 2008 t = t1 + t2; 2009 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2010 error(_("time overflow")); 2011 (void) exit(EXIT_FAILURE); 2012 } 2013 return t; 2014} 2015 2016/* 2017** Given a rule, and a year, compute the date - in seconds since January 1, 2018** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2019*/ 2020 2021static time_t 2022rpytime(rp, wantedy) 2023register const struct rule * const rp; 2024register const int wantedy; 2025{ 2026 register int y, m, i; 2027 register long dayoff; /* with a nod to Margaret O. */ 2028 register time_t t; 2029 2030 if (wantedy == INT_MIN) 2031 return min_time; 2032 if (wantedy == INT_MAX) 2033 return max_time; 2034 dayoff = 0; 2035 m = TM_JANUARY; 2036 y = EPOCH_YEAR; 2037 while (wantedy != y) { 2038 if (wantedy > y) { 2039 i = len_years[isleap(y)]; 2040 ++y; 2041 } else { 2042 --y; 2043 i = -len_years[isleap(y)]; 2044 } 2045 dayoff = oadd(dayoff, eitol(i)); 2046 } 2047 while (m != rp->r_month) { 2048 i = len_months[isleap(y)][m]; 2049 dayoff = oadd(dayoff, eitol(i)); 2050 ++m; 2051 } 2052 i = rp->r_dayofmonth; 2053 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2054 if (rp->r_dycode == DC_DOWLEQ) 2055 --i; 2056 else { 2057 error(_("use of 2/29 in non leap-year")); 2058 (void) exit(EXIT_FAILURE); 2059 } 2060 } 2061 --i; 2062 dayoff = oadd(dayoff, eitol(i)); 2063 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2064 register long wday; 2065 2066#define LDAYSPERWEEK ((long) DAYSPERWEEK) 2067 wday = eitol(EPOCH_WDAY); 2068 /* 2069 ** Don't trust mod of negative numbers. 2070 */ 2071 if (dayoff >= 0) 2072 wday = (wday + dayoff) % LDAYSPERWEEK; 2073 else { 2074 wday -= ((-dayoff) % LDAYSPERWEEK); 2075 if (wday < 0) 2076 wday += LDAYSPERWEEK; 2077 } 2078 while (wday != eitol(rp->r_wday)) 2079 if (rp->r_dycode == DC_DOWGEQ) { 2080 dayoff = oadd(dayoff, (long) 1); 2081 if (++wday >= LDAYSPERWEEK) 2082 wday = 0; 2083 ++i; 2084 } else { 2085 dayoff = oadd(dayoff, (long) -1); 2086 if (--wday < 0) 2087 wday = LDAYSPERWEEK - 1; 2088 --i; 2089 } 2090 if (i < 0 || i >= len_months[isleap(y)][m]) { 2091 error(_("no day in month matches rule")); 2092 (void) exit(EXIT_FAILURE); 2093 } 2094 } 2095 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2096 return min_time; 2097 t = (time_t) dayoff * SECSPERDAY; 2098 /* 2099 ** Cheap overflow check. 2100 */ 2101 if (t / SECSPERDAY != dayoff) 2102 return (dayoff > 0) ? max_time : min_time; 2103 return tadd(t, rp->r_tod); 2104} 2105 2106static void 2107newabbr(string) 2108const char * const string; 2109{ 2110 register int i; 2111 2112 i = strlen(string) + 1; 2113 if (charcnt + i > TZ_MAX_CHARS) { 2114 error(_("too many, or too long, time zone abbreviations")); 2115 (void) exit(EXIT_FAILURE); 2116 } 2117 (void) strcpy(&chars[charcnt], string); 2118 charcnt += eitol(i); 2119} 2120 2121static int 2122mkdirs(argname) 2123char * const argname; 2124{ 2125 register char * name; 2126 register char * cp; 2127 2128 if (argname == NULL || *argname == '\0' || Dflag) 2129 return 0; 2130 cp = name = ecpyalloc(argname); 2131 while ((cp = strchr(cp + 1, '/')) != 0) { 2132 *cp = '\0'; 2133#ifndef unix 2134 /* 2135 ** DOS drive specifier? 2136 */ 2137 if (isalpha((unsigned char) name[0]) && 2138 name[1] == ':' && name[2] == '\0') { 2139 *cp = '/'; 2140 continue; 2141 } 2142#endif /* !defined unix */ 2143 if (!itsdir(name)) { 2144 /* 2145 ** It doesn't seem to exist, so we try to create it. 2146 ** Creation may fail because of the directory being 2147 ** created by some other multiprocessor, so we get 2148 ** to do extra checking. 2149 */ 2150 if (mkdir(name, (S_IRUSR | S_IWUSR | S_IXUSR 2151 | S_IRGRP | S_IXGRP | S_IROTH 2152 | S_IXOTH)) != 0 2153 && (errno != EEXIST || !itsdir(name))) { 2154 warn(_("can't create directory %s"), name); 2155 ifree(name); 2156 return -1; 2157 } 2158 } 2159 *cp = '/'; 2160 } 2161 ifree(name); 2162 return 0; 2163} 2164 2165static long 2166eitol(i) 2167const int i; 2168{ 2169 long l; 2170 2171 l = i; 2172 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) 2173 errx(EXIT_FAILURE, _("%d did not sign extend correctly"), i); 2174 return l; 2175} 2176 2177#include <grp.h> 2178#include <pwd.h> 2179 2180static void 2181setgroup(flag, name) 2182 gid_t *flag; 2183 const char *name; 2184{ 2185 struct group *gr; 2186 2187 if (*flag != (gid_t)-1) 2188 errx(EXIT_FAILURE, _("multiple -g flags specified")); 2189 2190 gr = getgrnam(name); 2191 if (gr == 0) { 2192 char *ep; 2193 unsigned long ul; 2194 2195 ul = strtoul(name, &ep, 10); 2196 if (ul == (unsigned long)(gid_t)ul && *ep == '\0') { 2197 *flag = ul; 2198 return; 2199 } 2200 errx(EXIT_FAILURE, _("group `%s' not found"), name); 2201 } 2202 *flag = gr->gr_gid; 2203} 2204 2205static void 2206setuser(flag, name) 2207 uid_t *flag; 2208 const char *name; 2209{ 2210 struct passwd *pw; 2211 2212 if (*flag != (gid_t)-1) 2213 errx(EXIT_FAILURE, _("multiple -u flags specified")); 2214 2215 pw = getpwnam(name); 2216 if (pw == 0) { 2217 char *ep; 2218 unsigned long ul; 2219 2220 ul = strtoul(name, &ep, 10); 2221 if (ul == (unsigned long)(gid_t)ul && *ep == '\0') { 2222 *flag = ul; 2223 return; 2224 } 2225 errx(EXIT_FAILURE, _("user `%s' not found"), name); 2226 } 2227 *flag = pw->pw_uid; 2228} 2229 2230/* 2231** UNIX was a registered trademark of UNIX System Laboratories in 1993. 2232*/ 2233