zic.c revision 130819
1static const char elsieid[] = "@(#)zic.c 7.116"; 2 3#ifndef lint 4static const char rcsid[] = 5 "$FreeBSD: head/usr.sbin/zic/zic.c 130819 2004-06-20 21:41:11Z stefanf $"; 6#endif /* not lint */ 7 8#include "private.h" 9#include "tzfile.h" 10#include <err.h> 11#include <locale.h> 12#include <sys/stat.h> /* for umask manifest constants */ 13#include <sys/types.h> 14#include <unistd.h> 15 16#define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) 17 18/* 19** On some ancient hosts, predicates like `isspace(C)' are defined 20** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, 21** which says they are defined only if C == ((unsigned char) C) || C == EOF. 22** Neither the C Standard nor POSIX require that `isascii' exist. 23** For portability, we check both ancient and modern requirements. 24** If isascii is not defined, the isascii check succeeds trivially. 25*/ 26#include "ctype.h" 27#ifndef isascii 28#define isascii(x) 1 29#endif 30 31struct rule { 32 const char * r_filename; 33 int r_linenum; 34 const char * r_name; 35 36 int r_loyear; /* for example, 1986 */ 37 int r_hiyear; /* for example, 1986 */ 38 const char * r_yrtype; 39 40 int r_month; /* 0..11 */ 41 42 int r_dycode; /* see below */ 43 int r_dayofmonth; 44 int r_wday; 45 46 long r_tod; /* time from midnight */ 47 int r_todisstd; /* above is standard time if TRUE */ 48 /* or wall clock time if FALSE */ 49 int r_todisgmt; /* above is GMT if TRUE */ 50 /* or local time if FALSE */ 51 long r_stdoff; /* offset from standard time */ 52 const char * r_abbrvar; /* variable part of abbreviation */ 53 54 int r_todo; /* a rule to do (used in outzone) */ 55 time_t r_temp; /* used in outzone */ 56}; 57 58/* 59** r_dycode r_dayofmonth r_wday 60*/ 61 62#define DC_DOM 0 /* 1..31 */ /* unused */ 63#define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ 64#define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ 65 66struct zone { 67 const char * z_filename; 68 int z_linenum; 69 70 const char * z_name; 71 long z_gmtoff; 72 const char * z_rule; 73 const char * z_format; 74 75 long z_stdoff; 76 77 struct rule * z_rules; 78 int z_nrules; 79 80 struct rule z_untilrule; 81 time_t z_untiltime; 82}; 83 84static void addtt P((time_t starttime, int type)); 85static int addtype P((long gmtoff, const char * abbr, int isdst, 86 int ttisstd, int ttisgmt)); 87static void leapadd P((time_t t, int positive, int rolling, int count)); 88static void adjleap P((void)); 89static void associate P((void)); 90static int ciequal P((const char * ap, const char * bp)); 91static void convert P((long val, char * buf)); 92static void dolink P((const char * fromfile, const char * tofile)); 93static void doabbr P((char * abbr, const char * format, 94 const char * letters, int isdst)); 95static void eat P((const char * name, int num)); 96static void eats P((const char * name, int num, 97 const char * rname, int rnum)); 98static long eitol P((int i)); 99static void error P((const char * message)); 100static char ** getfields P((char * buf)); 101static long gethms P((const char * string, const char * errstrng, 102 int signable)); 103static void infile P((const char * filename)); 104static void inleap P((char ** fields, int nfields)); 105static void inlink P((char ** fields, int nfields)); 106static void inrule P((char ** fields, int nfields)); 107static int inzcont P((char ** fields, int nfields)); 108static int inzone P((char ** fields, int nfields)); 109static int inzsub P((char ** fields, int nfields, int iscont)); 110static int itsabbr P((const char * abbr, const char * word)); 111static int itsdir P((const char * name)); 112static int lowerit P((int c)); 113static char * memcheck P((char * tocheck)); 114static int mkdirs P((char * filename)); 115static void newabbr P((const char * abbr)); 116static long oadd P((long t1, long t2)); 117static void outzone P((const struct zone * zp, int ntzones)); 118static void puttzcode P((long code, FILE * fp)); 119static int rcomp P((const void * leftp, const void * rightp)); 120static time_t rpytime P((const struct rule * rp, int wantedy)); 121static void rulesub P((struct rule * rp, 122 const char * loyearp, const char * hiyearp, 123 const char * typep, const char * monthp, 124 const char * dayp, const char * timep)); 125static void setboundaries P((void)); 126static void setgroup P((gid_t *flag, const char *name)); 127static void setuser P((uid_t *flag, const char *name)); 128static time_t tadd P((time_t t1, long t2)); 129static void usage P((void)); 130static void writezone P((const char * name)); 131static int yearistype P((int year, const char * type)); 132 133#if !(HAVE_STRERROR - 0) 134static char * strerror P((int)); 135#endif /* !(HAVE_STRERROR - 0) */ 136 137static int charcnt; 138static int errors; 139static const char * filename; 140static int leapcnt; 141static int linenum; 142static time_t max_time; 143static int max_year; 144static int max_year_representable; 145static time_t min_time; 146static int min_year; 147static int min_year_representable; 148static int noise; 149static const char * rfilename; 150static int rlinenum; 151static int timecnt; 152static int typecnt; 153 154/* 155** Line codes. 156*/ 157 158#define LC_RULE 0 159#define LC_ZONE 1 160#define LC_LINK 2 161#define LC_LEAP 3 162 163/* 164** Which fields are which on a Zone line. 165*/ 166 167#define ZF_NAME 1 168#define ZF_GMTOFF 2 169#define ZF_RULE 3 170#define ZF_FORMAT 4 171#define ZF_TILYEAR 5 172#define ZF_TILMONTH 6 173#define ZF_TILDAY 7 174#define ZF_TILTIME 8 175#define ZONE_MINFIELDS 5 176#define ZONE_MAXFIELDS 9 177 178/* 179** Which fields are which on a Zone continuation line. 180*/ 181 182#define ZFC_GMTOFF 0 183#define ZFC_RULE 1 184#define ZFC_FORMAT 2 185#define ZFC_TILYEAR 3 186#define ZFC_TILMONTH 4 187#define ZFC_TILDAY 5 188#define ZFC_TILTIME 6 189#define ZONEC_MINFIELDS 3 190#define ZONEC_MAXFIELDS 7 191 192/* 193** Which files are which on a Rule line. 194*/ 195 196#define RF_NAME 1 197#define RF_LOYEAR 2 198#define RF_HIYEAR 3 199#define RF_COMMAND 4 200#define RF_MONTH 5 201#define RF_DAY 6 202#define RF_TOD 7 203#define RF_STDOFF 8 204#define RF_ABBRVAR 9 205#define RULE_FIELDS 10 206 207/* 208** Which fields are which on a Link line. 209*/ 210 211#define LF_FROM 1 212#define LF_TO 2 213#define LINK_FIELDS 3 214 215/* 216** Which fields are which on a Leap line. 217*/ 218 219#define LP_YEAR 1 220#define LP_MONTH 2 221#define LP_DAY 3 222#define LP_TIME 4 223#define LP_CORR 5 224#define LP_ROLL 6 225#define LEAP_FIELDS 7 226 227/* 228** Year synonyms. 229*/ 230 231#define YR_MINIMUM 0 232#define YR_MAXIMUM 1 233#define YR_ONLY 2 234 235static struct rule * rules; 236static int nrules; /* number of rules */ 237 238static struct zone * zones; 239static int nzones; /* number of zones */ 240 241struct link { 242 const char * l_filename; 243 int l_linenum; 244 const char * l_from; 245 const char * l_to; 246}; 247 248static struct link * links; 249static int nlinks; 250 251struct lookup { 252 const char * l_word; 253 const int l_value; 254}; 255 256static struct lookup const * byword P((const char * string, 257 const struct lookup * lp)); 258 259static struct lookup const line_codes[] = { 260 { "Rule", LC_RULE }, 261 { "Zone", LC_ZONE }, 262 { "Link", LC_LINK }, 263 { "Leap", LC_LEAP }, 264 { NULL, 0} 265}; 266 267static struct lookup const mon_names[] = { 268 { "January", TM_JANUARY }, 269 { "February", TM_FEBRUARY }, 270 { "March", TM_MARCH }, 271 { "April", TM_APRIL }, 272 { "May", TM_MAY }, 273 { "June", TM_JUNE }, 274 { "July", TM_JULY }, 275 { "August", TM_AUGUST }, 276 { "September", TM_SEPTEMBER }, 277 { "October", TM_OCTOBER }, 278 { "November", TM_NOVEMBER }, 279 { "December", TM_DECEMBER }, 280 { NULL, 0 } 281}; 282 283static struct lookup const wday_names[] = { 284 { "Sunday", TM_SUNDAY }, 285 { "Monday", TM_MONDAY }, 286 { "Tuesday", TM_TUESDAY }, 287 { "Wednesday", TM_WEDNESDAY }, 288 { "Thursday", TM_THURSDAY }, 289 { "Friday", TM_FRIDAY }, 290 { "Saturday", TM_SATURDAY }, 291 { NULL, 0 } 292}; 293 294static struct lookup const lasts[] = { 295 { "last-Sunday", TM_SUNDAY }, 296 { "last-Monday", TM_MONDAY }, 297 { "last-Tuesday", TM_TUESDAY }, 298 { "last-Wednesday", TM_WEDNESDAY }, 299 { "last-Thursday", TM_THURSDAY }, 300 { "last-Friday", TM_FRIDAY }, 301 { "last-Saturday", TM_SATURDAY }, 302 { NULL, 0 } 303}; 304 305static struct lookup const begin_years[] = { 306 { "minimum", YR_MINIMUM }, 307 { "maximum", YR_MAXIMUM }, 308 { NULL, 0 } 309}; 310 311static struct lookup const end_years[] = { 312 { "minimum", YR_MINIMUM }, 313 { "maximum", YR_MAXIMUM }, 314 { "only", YR_ONLY }, 315 { NULL, 0 } 316}; 317 318static struct lookup const leap_types[] = { 319 { "Rolling", TRUE }, 320 { "Stationary", FALSE }, 321 { NULL, 0 } 322}; 323 324static const int len_months[2][MONSPERYEAR] = { 325 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, 326 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } 327}; 328 329static const int len_years[2] = { 330 DAYSPERNYEAR, DAYSPERLYEAR 331}; 332 333static struct attype { 334 time_t at; 335 unsigned char type; 336} attypes[TZ_MAX_TIMES]; 337static long gmtoffs[TZ_MAX_TYPES]; 338static char isdsts[TZ_MAX_TYPES]; 339static unsigned char abbrinds[TZ_MAX_TYPES]; 340static char ttisstds[TZ_MAX_TYPES]; 341static char ttisgmts[TZ_MAX_TYPES]; 342static char chars[TZ_MAX_CHARS]; 343static time_t trans[TZ_MAX_LEAPS]; 344static long corr[TZ_MAX_LEAPS]; 345static char roll[TZ_MAX_LEAPS]; 346 347/* 348** Memory allocation. 349*/ 350 351static char * 352memcheck(ptr) 353char * const ptr; 354{ 355 if (ptr == NULL) 356 errx(EXIT_FAILURE, _("memory exhausted")); 357 return ptr; 358} 359 360#define emalloc(size) memcheck(imalloc(size)) 361#define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) 362#define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) 363#define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) 364 365/* 366** Error handling. 367*/ 368 369#if !(HAVE_STRERROR - 0) 370static char * 371strerror(errnum) 372int errnum; 373{ 374 extern char * sys_errlist[]; 375 extern int sys_nerr; 376 377 return (errnum > 0 && errnum <= sys_nerr) ? 378 sys_errlist[errnum] : _("Unknown system error"); 379} 380#endif /* !(HAVE_STRERROR - 0) */ 381 382static void 383eats(name, num, rname, rnum) 384const char * const name; 385const int num; 386const char * const rname; 387const int rnum; 388{ 389 filename = name; 390 linenum = num; 391 rfilename = rname; 392 rlinenum = rnum; 393} 394 395static void 396eat(name, num) 397const char * const name; 398const int num; 399{ 400 eats(name, num, (char *) NULL, -1); 401} 402 403static void 404error(string) 405const char * const string; 406{ 407 /* 408 ** Match the format of "cc" to allow sh users to 409 ** zic ... 2>&1 | error -t "*" -v 410 ** on BSD systems. 411 */ 412 (void) fprintf(stderr, _("\"%s\", line %d: %s"), 413 filename, linenum, string); 414 if (rfilename != NULL) 415 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), 416 rfilename, rlinenum); 417 (void) fprintf(stderr, "\n"); 418 ++errors; 419} 420 421static void 422warning(string) 423const char * const string; 424{ 425 char * cp; 426 427 cp = ecpyalloc(_("warning: ")); 428 cp = ecatalloc(cp, string); 429 error(cp); 430 ifree(cp); 431 --errors; 432} 433 434static void 435usage P((void)) 436{ 437 (void) fprintf(stderr, "%s\n%s\n", 438_("usage: zic [--version] [-s] [-v] [-l localtime] [-p posixrules] [-d directory]"), 439_(" [-L leapseconds] [-y yearistype] [filename ... ]")); 440 (void) exit(EXIT_FAILURE); 441} 442 443static const char * psxrules; 444static const char * lcltime; 445static const char * directory; 446static const char * leapsec; 447static const char * yitcommand; 448static int sflag = FALSE; 449static int Dflag; 450static uid_t uflag = (uid_t)-1; 451static gid_t gflag = (gid_t)-1; 452static mode_t mflag = (S_IRUSR | S_IRGRP | S_IROTH 453 | S_IWUSR); 454 455int 456main(argc, argv) 457int argc; 458char * argv[]; 459{ 460 register int i; 461 register int j; 462 register int c; 463 464#ifdef unix 465 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); 466#endif /* defined unix */ 467#if HAVE_GETTEXT - 0 468 (void) setlocale(LC_MESSAGES, ""); 469#ifdef TZ_DOMAINDIR 470 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); 471#endif /* defined TEXTDOMAINDIR */ 472 (void) textdomain(TZ_DOMAIN); 473#endif /* HAVE_GETTEXT - 0 */ 474 for (i = 1; i < argc; ++i) 475 if (strcmp(argv[i], "--version") == 0) { 476 errx(EXIT_SUCCESS, "%s", elsieid); 477 } 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 if (set == NULL) 506 errx(EXIT_FAILURE, 507_("invalid file mode")); 508 getmode(set, mflag); 509 free(set); 510 break; 511 } 512 case 'p': 513 if (psxrules == NULL) 514 psxrules = optarg; 515 else 516 errx(EXIT_FAILURE, 517_("more than one -p option specified")); 518 break; 519 case 'u': 520 setuser(&uflag, optarg); 521 break; 522 case 'y': 523 if (yitcommand == NULL) 524 yitcommand = optarg; 525 else 526 errx(EXIT_FAILURE, 527_("more than one -y option specified")); 528 break; 529 case 'L': 530 if (leapsec == NULL) 531 leapsec = optarg; 532 else 533 errx(EXIT_FAILURE, 534_("more than one -L option specified")); 535 break; 536 case 'v': 537 noise = TRUE; 538 break; 539 case 's': 540 sflag = TRUE; 541 break; 542 } 543 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 544 usage(); /* usage message by request */ 545 if (directory == NULL) 546 directory = TZDIR; 547 if (yitcommand == NULL) 548 yitcommand = "yearistype"; 549 550 setboundaries(); 551 552 if (optind < argc && leapsec != NULL) { 553 infile(leapsec); 554 adjleap(); 555 } 556 557 for (i = optind; i < argc; ++i) 558 infile(argv[i]); 559 if (errors) 560 (void) exit(EXIT_FAILURE); 561 associate(); 562 for (i = 0; i < nzones; i = j) { 563 /* 564 ** Find the next non-continuation zone entry. 565 */ 566 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 567 continue; 568 outzone(&zones[i], j - i); 569 } 570 /* 571 ** Make links. 572 */ 573 for (i = 0; i < nlinks; ++i) { 574 eat(links[i].l_filename, links[i].l_linenum); 575 dolink(links[i].l_from, links[i].l_to); 576 } 577 if (lcltime != NULL) { 578 eat("command line", 1); 579 dolink(lcltime, TZDEFAULT); 580 } 581 if (psxrules != NULL) { 582 eat("command line", 1); 583 dolink(psxrules, TZDEFRULES); 584 } 585 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 586} 587 588static void 589dolink(fromfile, tofile) 590const char * const fromfile; 591const char * const tofile; 592{ 593 register char * fromname; 594 register char * toname; 595 596 if (fromfile[0] == '/') 597 fromname = ecpyalloc(fromfile); 598 else { 599 fromname = ecpyalloc(directory); 600 fromname = ecatalloc(fromname, "/"); 601 fromname = ecatalloc(fromname, fromfile); 602 } 603 if (tofile[0] == '/') 604 toname = ecpyalloc(tofile); 605 else { 606 toname = ecpyalloc(directory); 607 toname = ecatalloc(toname, "/"); 608 toname = ecatalloc(toname, tofile); 609 } 610 /* 611 ** We get to be careful here since 612 ** there's a fair chance of root running us. 613 */ 614 if (!itsdir(toname)) 615 (void) remove(toname); 616 if (link(fromname, toname) != 0) { 617 int result; 618 619 if (mkdirs(toname) != 0) 620 (void) exit(EXIT_FAILURE); 621 622 result = link(fromname, toname); 623#if (HAVE_SYMLINK - 0) 624 if (result != 0 && 625 access(fromname, F_OK) == 0 && 626 !itsdir(fromname)) { 627 const char *s = tofile; 628 register char * symlinkcontents = NULL; 629 while ((s = strchr(s+1, '/')) != NULL) 630 symlinkcontents = ecatalloc(symlinkcontents, "../"); 631 symlinkcontents = ecatalloc(symlinkcontents, fromfile); 632 633 result = symlink(symlinkcontents, toname); 634 if (result == 0) 635warning(_("hard link failed, symbolic link used")); 636 ifree(symlinkcontents); 637 } 638#endif 639 if (result != 0) { 640 err(EXIT_FAILURE, _("can't link from %s to %s"), 641 fromname, toname); 642 } 643 } 644 ifree(fromname); 645 ifree(toname); 646} 647 648#ifndef INT_MAX 649#define INT_MAX ((int) (((unsigned)~0)>>1)) 650#endif /* !defined INT_MAX */ 651 652#ifndef INT_MIN 653#define INT_MIN ((int) ~(((unsigned)~0)>>1)) 654#endif /* !defined INT_MIN */ 655 656/* 657** The tz file format currently allows at most 32-bit quantities. 658** This restriction should be removed before signed 32-bit values 659** wrap around in 2038, but unfortunately this will require a 660** change to the tz file format. 661*/ 662 663#define MAX_BITS_IN_FILE 32 664#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) 665 666static void 667setboundaries P((void)) 668{ 669 if (TYPE_SIGNED(time_t)) { 670 min_time = ~ (time_t) 0; 671 min_time <<= TIME_T_BITS_IN_FILE - 1; 672 max_time = ~ (time_t) 0 - min_time; 673 if (sflag) 674 min_time = 0; 675 } else { 676 min_time = 0; 677 max_time = 2 - sflag; 678 max_time <<= TIME_T_BITS_IN_FILE - 1; 679 --max_time; 680 } 681 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; 682 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; 683 min_year_representable = min_year; 684 max_year_representable = max_year; 685} 686 687static int 688itsdir(name) 689const char * const name; 690{ 691 register char * myname; 692 register int accres; 693 694 myname = ecpyalloc(name); 695 myname = ecatalloc(myname, "/."); 696 accres = access(myname, F_OK); 697 ifree(myname); 698 return accres == 0; 699} 700 701/* 702** Associate sets of rules with zones. 703*/ 704 705/* 706** Sort by rule name. 707*/ 708 709static int 710rcomp(cp1, cp2) 711const void * cp1; 712const void * cp2; 713{ 714 return strcmp(((const struct rule *) cp1)->r_name, 715 ((const struct rule *) cp2)->r_name); 716} 717 718static void 719associate P((void)) 720{ 721 register struct zone * zp; 722 register struct rule * rp; 723 register int base, out; 724 register int i, j; 725 726 if (nrules != 0) { 727 (void) qsort((void *) rules, (size_t) nrules, 728 (size_t) sizeof *rules, rcomp); 729 for (i = 0; i < nrules - 1; ++i) { 730 if (strcmp(rules[i].r_name, 731 rules[i + 1].r_name) != 0) 732 continue; 733 if (strcmp(rules[i].r_filename, 734 rules[i + 1].r_filename) == 0) 735 continue; 736 eat(rules[i].r_filename, rules[i].r_linenum); 737 warning(_("same rule name in multiple files")); 738 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); 739 warning(_("same rule name in multiple files")); 740 for (j = i + 2; j < nrules; ++j) { 741 if (strcmp(rules[i].r_name, 742 rules[j].r_name) != 0) 743 break; 744 if (strcmp(rules[i].r_filename, 745 rules[j].r_filename) == 0) 746 continue; 747 if (strcmp(rules[i + 1].r_filename, 748 rules[j].r_filename) == 0) 749 continue; 750 break; 751 } 752 i = j - 1; 753 } 754 } 755 for (i = 0; i < nzones; ++i) { 756 zp = &zones[i]; 757 zp->z_rules = NULL; 758 zp->z_nrules = 0; 759 } 760 for (base = 0; base < nrules; base = out) { 761 rp = &rules[base]; 762 for (out = base + 1; out < nrules; ++out) 763 if (strcmp(rp->r_name, rules[out].r_name) != 0) 764 break; 765 for (i = 0; i < nzones; ++i) { 766 zp = &zones[i]; 767 if (strcmp(zp->z_rule, rp->r_name) != 0) 768 continue; 769 zp->z_rules = rp; 770 zp->z_nrules = out - base; 771 } 772 } 773 for (i = 0; i < nzones; ++i) { 774 zp = &zones[i]; 775 if (zp->z_nrules == 0) { 776 /* 777 ** Maybe we have a local standard time offset. 778 */ 779 eat(zp->z_filename, zp->z_linenum); 780 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), 781 TRUE); 782 /* 783 ** Note, though, that if there's no rule, 784 ** a '%s' in the format is a bad thing. 785 */ 786 if (strchr(zp->z_format, '%') != 0) 787 error(_("%s in ruleless zone")); 788 } 789 } 790 if (errors) 791 (void) exit(EXIT_FAILURE); 792} 793 794static void 795infile(name) 796const char * name; 797{ 798 register FILE * fp; 799 register char ** fields; 800 register char * cp; 801 register const struct lookup * lp; 802 register int nfields; 803 register int wantcont; 804 register int num; 805 char buf[BUFSIZ]; 806 807 if (strcmp(name, "-") == 0) { 808 name = _("standard input"); 809 fp = stdin; 810 } else if ((fp = fopen(name, "r")) == NULL) 811 err(EXIT_FAILURE, _("can't open %s"), name); 812 wantcont = FALSE; 813 for (num = 1; ; ++num) { 814 eat(name, num); 815 if (fgets(buf, (int) sizeof buf, fp) != buf) 816 break; 817 cp = strchr(buf, '\n'); 818 if (cp == NULL) { 819 error(_("line too long")); 820 (void) exit(EXIT_FAILURE); 821 } 822 *cp = '\0'; 823 fields = getfields(buf); 824 nfields = 0; 825 while (fields[nfields] != NULL) { 826 static char nada; 827 828 if (strcmp(fields[nfields], "-") == 0) 829 fields[nfields] = &nada; 830 ++nfields; 831 } 832 if (nfields == 0) { 833 /* nothing to do */ 834 } else if (wantcont) { 835 wantcont = inzcont(fields, nfields); 836 } else { 837 lp = byword(fields[0], line_codes); 838 if (lp == NULL) 839 error(_("input line of unknown type")); 840 else switch ((int) (lp->l_value)) { 841 case LC_RULE: 842 inrule(fields, nfields); 843 wantcont = FALSE; 844 break; 845 case LC_ZONE: 846 wantcont = inzone(fields, nfields); 847 break; 848 case LC_LINK: 849 inlink(fields, nfields); 850 wantcont = FALSE; 851 break; 852 case LC_LEAP: 853 if (name != leapsec) 854 warnx( 855_("leap line in non leap seconds file %s"), name); 856 else inleap(fields, nfields); 857 wantcont = FALSE; 858 break; 859 default: /* "cannot happen" */ 860 errx(EXIT_FAILURE, 861_("panic: invalid l_value %d"), lp->l_value); 862 } 863 } 864 ifree((char *) fields); 865 } 866 if (ferror(fp)) 867 errx(EXIT_FAILURE, _("error reading %s"), filename); 868 if (fp != stdin && fclose(fp)) 869 err(EXIT_FAILURE, _("error closing %s"), filename); 870 if (wantcont) 871 error(_("expected continuation line not found")); 872} 873 874/* 875** Convert a string of one of the forms 876** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss 877** into a number of seconds. 878** A null string maps to zero. 879** Call error with errstring and return zero on errors. 880*/ 881 882static long 883gethms(string, errstring, signable) 884const char * string; 885const char * const errstring; 886const int signable; 887{ 888 int hh, mm, ss, sign; 889 890 if (string == NULL || *string == '\0') 891 return 0; 892 if (!signable) 893 sign = 1; 894 else if (*string == '-') { 895 sign = -1; 896 ++string; 897 } else sign = 1; 898 if (sscanf(string, scheck(string, "%d"), &hh) == 1) 899 mm = ss = 0; 900 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) 901 ss = 0; 902 else if (sscanf(string, scheck(string, "%d:%d:%d"), 903 &hh, &mm, &ss) != 3) { 904 error(errstring); 905 return 0; 906 } 907 if ((hh < 0 || hh >= HOURSPERDAY || 908 mm < 0 || mm >= MINSPERHOUR || 909 ss < 0 || ss > SECSPERMIN) && 910 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) { 911 error(errstring); 912 return 0; 913 } 914 if (noise && hh == HOURSPERDAY) 915 warning(_("24:00 not handled by pre-1998 versions of zic")); 916 return eitol(sign) * 917 (eitol(hh * MINSPERHOUR + mm) * 918 eitol(SECSPERMIN) + eitol(ss)); 919} 920 921static void 922inrule(fields, nfields) 923register char ** const fields; 924const int nfields; 925{ 926 static struct rule r; 927 928 if (nfields != RULE_FIELDS) { 929 error(_("wrong number of fields on Rule line")); 930 return; 931 } 932 if (*fields[RF_NAME] == '\0') { 933 error(_("nameless rule")); 934 return; 935 } 936 r.r_filename = filename; 937 r.r_linenum = linenum; 938 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); 939 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], 940 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); 941 r.r_name = ecpyalloc(fields[RF_NAME]); 942 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); 943 rules = (struct rule *) (void *) erealloc((char *) rules, 944 (int) ((nrules + 1) * sizeof *rules)); 945 rules[nrules++] = r; 946} 947 948static int 949inzone(fields, nfields) 950register char ** const fields; 951const int nfields; 952{ 953 register int i; 954 static char * buf; 955 956 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { 957 error(_("wrong number of fields on Zone line")); 958 return FALSE; 959 } 960 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { 961 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); 962 (void) sprintf(buf, 963_("\"Zone %s\" line and -l option are mutually exclusive"), 964 TZDEFAULT); 965 error(buf); 966 return FALSE; 967 } 968 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { 969 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); 970 (void) sprintf(buf, 971_("\"Zone %s\" line and -p option are mutually exclusive"), 972 TZDEFRULES); 973 error(buf); 974 return FALSE; 975 } 976 for (i = 0; i < nzones; ++i) 977 if (zones[i].z_name != NULL && 978 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { 979 buf = erealloc(buf, (int) (132 + 980 strlen(fields[ZF_NAME]) + 981 strlen(zones[i].z_filename))); 982 (void) sprintf(buf, 983_("duplicate zone name %s (file \"%s\", line %d)"), 984 fields[ZF_NAME], 985 zones[i].z_filename, 986 zones[i].z_linenum); 987 error(buf); 988 return FALSE; 989 } 990 return inzsub(fields, nfields, FALSE); 991} 992 993static int 994inzcont(fields, nfields) 995register char ** const fields; 996const int nfields; 997{ 998 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { 999 error(_("wrong number of fields on Zone continuation line")); 1000 return FALSE; 1001 } 1002 return inzsub(fields, nfields, TRUE); 1003} 1004 1005static int 1006inzsub(fields, nfields, iscont) 1007register char ** const fields; 1008const int nfields; 1009const int iscont; 1010{ 1011 register char * cp; 1012 static struct zone z; 1013 register int i_gmtoff, i_rule, i_format; 1014 register int i_untilyear, i_untilmonth; 1015 register int i_untilday, i_untiltime; 1016 register int hasuntil; 1017 1018 if (iscont) { 1019 i_gmtoff = ZFC_GMTOFF; 1020 i_rule = ZFC_RULE; 1021 i_format = ZFC_FORMAT; 1022 i_untilyear = ZFC_TILYEAR; 1023 i_untilmonth = ZFC_TILMONTH; 1024 i_untilday = ZFC_TILDAY; 1025 i_untiltime = ZFC_TILTIME; 1026 z.z_name = NULL; 1027 } else { 1028 i_gmtoff = ZF_GMTOFF; 1029 i_rule = ZF_RULE; 1030 i_format = ZF_FORMAT; 1031 i_untilyear = ZF_TILYEAR; 1032 i_untilmonth = ZF_TILMONTH; 1033 i_untilday = ZF_TILDAY; 1034 i_untiltime = ZF_TILTIME; 1035 z.z_name = ecpyalloc(fields[ZF_NAME]); 1036 } 1037 z.z_filename = filename; 1038 z.z_linenum = linenum; 1039 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE); 1040 if ((cp = strchr(fields[i_format], '%')) != 0) { 1041 if (*++cp != 's' || strchr(cp, '%') != 0) { 1042 error(_("invalid abbreviation format")); 1043 return FALSE; 1044 } 1045 } 1046 z.z_rule = ecpyalloc(fields[i_rule]); 1047 z.z_format = ecpyalloc(fields[i_format]); 1048 hasuntil = nfields > i_untilyear; 1049 if (hasuntil) { 1050 z.z_untilrule.r_filename = filename; 1051 z.z_untilrule.r_linenum = linenum; 1052 rulesub(&z.z_untilrule, 1053 fields[i_untilyear], 1054 "only", 1055 "", 1056 (nfields > i_untilmonth) ? 1057 fields[i_untilmonth] : "Jan", 1058 (nfields > i_untilday) ? fields[i_untilday] : "1", 1059 (nfields > i_untiltime) ? fields[i_untiltime] : "0"); 1060 z.z_untiltime = rpytime(&z.z_untilrule, 1061 z.z_untilrule.r_loyear); 1062 if (iscont && nzones > 0 && 1063 z.z_untiltime > min_time && 1064 z.z_untiltime < max_time && 1065 zones[nzones - 1].z_untiltime > min_time && 1066 zones[nzones - 1].z_untiltime < max_time && 1067 zones[nzones - 1].z_untiltime >= z.z_untiltime) { 1068 error(_("Zone continuation line end time is not after end time of previous line")); 1069 return FALSE; 1070 } 1071 } 1072 zones = (struct zone *) (void *) erealloc((char *) zones, 1073 (int) ((nzones + 1) * sizeof *zones)); 1074 zones[nzones++] = z; 1075 /* 1076 ** If there was an UNTIL field on this line, 1077 ** there's more information about the zone on the next line. 1078 */ 1079 return hasuntil; 1080} 1081 1082static void 1083inleap(fields, nfields) 1084register char ** const fields; 1085const int nfields; 1086{ 1087 register const char * cp; 1088 register const struct lookup * lp; 1089 register int i, j; 1090 int year, month, day; 1091 long dayoff, tod; 1092 time_t t; 1093 1094 if (nfields != LEAP_FIELDS) { 1095 error(_("wrong number of fields on Leap line")); 1096 return; 1097 } 1098 dayoff = 0; 1099 cp = fields[LP_YEAR]; 1100 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { 1101 /* 1102 * Leapin' Lizards! 1103 */ 1104 error(_("invalid leaping year")); 1105 return; 1106 } 1107 j = EPOCH_YEAR; 1108 while (j != year) { 1109 if (year > j) { 1110 i = len_years[isleap(j)]; 1111 ++j; 1112 } else { 1113 --j; 1114 i = -len_years[isleap(j)]; 1115 } 1116 dayoff = oadd(dayoff, eitol(i)); 1117 } 1118 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { 1119 error(_("invalid month name")); 1120 return; 1121 } 1122 month = lp->l_value; 1123 j = TM_JANUARY; 1124 while (j != month) { 1125 i = len_months[isleap(year)][j]; 1126 dayoff = oadd(dayoff, eitol(i)); 1127 ++j; 1128 } 1129 cp = fields[LP_DAY]; 1130 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || 1131 day <= 0 || day > len_months[isleap(year)][month]) { 1132 error(_("invalid day of month")); 1133 return; 1134 } 1135 dayoff = oadd(dayoff, eitol(day - 1)); 1136 if (dayoff < 0 && !TYPE_SIGNED(time_t)) { 1137 error(_("time before zero")); 1138 return; 1139 } 1140 if (dayoff < min_time / SECSPERDAY) { 1141 error(_("time too small")); 1142 return; 1143 } 1144 if (dayoff > max_time / SECSPERDAY) { 1145 error(_("time too large")); 1146 return; 1147 } 1148 t = (time_t) dayoff * SECSPERDAY; 1149 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1150 cp = fields[LP_CORR]; 1151 { 1152 register int positive; 1153 int count; 1154 1155 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1156 positive = FALSE; 1157 count = 1; 1158 } else if (strcmp(cp, "--") == 0) { 1159 positive = FALSE; 1160 count = 2; 1161 } else if (strcmp(cp, "+") == 0) { 1162 positive = TRUE; 1163 count = 1; 1164 } else if (strcmp(cp, "++") == 0) { 1165 positive = TRUE; 1166 count = 2; 1167 } else { 1168 error(_("illegal CORRECTION field on Leap line")); 1169 return; 1170 } 1171 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1172 error(_("illegal Rolling/Stationary field on Leap line")); 1173 return; 1174 } 1175 leapadd(tadd(t, tod), positive, lp->l_value, count); 1176 } 1177} 1178 1179static void 1180inlink(fields, nfields) 1181register char ** const fields; 1182const int nfields; 1183{ 1184 struct link l; 1185 1186 if (nfields != LINK_FIELDS) { 1187 error(_("wrong number of fields on Link line")); 1188 return; 1189 } 1190 if (*fields[LF_FROM] == '\0') { 1191 error(_("blank FROM field on Link line")); 1192 return; 1193 } 1194 if (*fields[LF_TO] == '\0') { 1195 error(_("blank TO field on Link line")); 1196 return; 1197 } 1198 l.l_filename = filename; 1199 l.l_linenum = linenum; 1200 l.l_from = ecpyalloc(fields[LF_FROM]); 1201 l.l_to = ecpyalloc(fields[LF_TO]); 1202 links = (struct link *) (void *) erealloc((char *) links, 1203 (int) ((nlinks + 1) * sizeof *links)); 1204 links[nlinks++] = l; 1205} 1206 1207static void 1208rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1209register struct rule * const rp; 1210const char * const loyearp; 1211const char * const hiyearp; 1212const char * const typep; 1213const char * const monthp; 1214const char * const dayp; 1215const char * const timep; 1216{ 1217 register const struct lookup * lp; 1218 register const char * cp; 1219 register char * dp; 1220 register char * ep; 1221 1222 if ((lp = byword(monthp, mon_names)) == NULL) { 1223 error(_("invalid month name")); 1224 return; 1225 } 1226 rp->r_month = lp->l_value; 1227 rp->r_todisstd = FALSE; 1228 rp->r_todisgmt = FALSE; 1229 dp = ecpyalloc(timep); 1230 if (*dp != '\0') { 1231 ep = dp + strlen(dp) - 1; 1232 switch (lowerit(*ep)) { 1233 case 's': /* Standard */ 1234 rp->r_todisstd = TRUE; 1235 rp->r_todisgmt = FALSE; 1236 *ep = '\0'; 1237 break; 1238 case 'w': /* Wall */ 1239 rp->r_todisstd = FALSE; 1240 rp->r_todisgmt = FALSE; 1241 *ep = '\0'; 1242 break; 1243 case 'g': /* Greenwich */ 1244 case 'u': /* Universal */ 1245 case 'z': /* Zulu */ 1246 rp->r_todisstd = TRUE; 1247 rp->r_todisgmt = TRUE; 1248 *ep = '\0'; 1249 break; 1250 } 1251 } 1252 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1253 ifree(dp); 1254 /* 1255 ** Year work. 1256 */ 1257 cp = loyearp; 1258 lp = byword(cp, begin_years); 1259 if (lp != NULL) switch ((int) lp->l_value) { 1260 case YR_MINIMUM: 1261 rp->r_loyear = INT_MIN; 1262 break; 1263 case YR_MAXIMUM: 1264 rp->r_loyear = INT_MAX; 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_loyear) != 1) { 1270 error(_("invalid starting 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 cp = hiyearp; 1279 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1280 case YR_MINIMUM: 1281 rp->r_hiyear = INT_MIN; 1282 break; 1283 case YR_MAXIMUM: 1284 rp->r_hiyear = INT_MAX; 1285 break; 1286 case YR_ONLY: 1287 rp->r_hiyear = rp->r_loyear; 1288 break; 1289 default: /* "cannot happen" */ 1290 errx(EXIT_FAILURE, 1291 _("panic: invalid l_value %d"), lp->l_value); 1292 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1293 error(_("invalid ending year")); 1294 return; 1295 } else if (noise) { 1296 if (rp->r_loyear < min_year_representable) 1297 warning(_("ending year too low to be represented")); 1298 else if (rp->r_loyear > max_year_representable) 1299 warning(_("ending year too high to be represented")); 1300 } 1301 if (rp->r_loyear > rp->r_hiyear) { 1302 error(_("starting year greater than ending year")); 1303 return; 1304 } 1305 if (*typep == '\0') 1306 rp->r_yrtype = NULL; 1307 else { 1308 if (rp->r_loyear == rp->r_hiyear) { 1309 error(_("typed single year")); 1310 return; 1311 } 1312 rp->r_yrtype = ecpyalloc(typep); 1313 } 1314 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1315 min_year = rp->r_loyear; 1316 /* 1317 ** Day work. 1318 ** Accept things such as: 1319 ** 1 1320 ** last-Sunday 1321 ** Sun<=20 1322 ** Sun>=7 1323 */ 1324 dp = ecpyalloc(dayp); 1325 if ((lp = byword(dp, lasts)) != NULL) { 1326 rp->r_dycode = DC_DOWLEQ; 1327 rp->r_wday = lp->l_value; 1328 rp->r_dayofmonth = len_months[1][rp->r_month]; 1329 } else { 1330 if ((ep = strchr(dp, '<')) != 0) 1331 rp->r_dycode = DC_DOWLEQ; 1332 else if ((ep = strchr(dp, '>')) != 0) 1333 rp->r_dycode = DC_DOWGEQ; 1334 else { 1335 ep = dp; 1336 rp->r_dycode = DC_DOM; 1337 } 1338 if (rp->r_dycode != DC_DOM) { 1339 *ep++ = 0; 1340 if (*ep++ != '=') { 1341 error(_("invalid day of month")); 1342 ifree(dp); 1343 return; 1344 } 1345 if ((lp = byword(dp, wday_names)) == NULL) { 1346 error(_("invalid weekday name")); 1347 ifree(dp); 1348 return; 1349 } 1350 rp->r_wday = lp->l_value; 1351 } 1352 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1353 rp->r_dayofmonth <= 0 || 1354 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1355 error(_("invalid day of month")); 1356 ifree(dp); 1357 return; 1358 } 1359 } 1360 ifree(dp); 1361} 1362 1363static void 1364convert(val, buf) 1365const long val; 1366char * const buf; 1367{ 1368 register int i; 1369 register long shift; 1370 1371 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1372 buf[i] = val >> shift; 1373} 1374 1375static void 1376puttzcode(val, fp) 1377const long val; 1378FILE * const fp; 1379{ 1380 char buf[4]; 1381 1382 convert(val, buf); 1383 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1384} 1385 1386static int 1387atcomp(avp, bvp) 1388void * avp; 1389void * bvp; 1390{ 1391 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) 1392 return -1; 1393 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) 1394 return 1; 1395 else return 0; 1396} 1397 1398static void 1399writezone(name) 1400const char * const name; 1401{ 1402 register FILE * fp; 1403 register int i, j; 1404 static char * fullname; 1405 static struct tzhead tzh; 1406 time_t ats[TZ_MAX_TIMES]; 1407 unsigned char types[TZ_MAX_TIMES]; 1408 1409 /* 1410 ** Sort. 1411 */ 1412 if (timecnt > 1) 1413 (void) qsort((void *) attypes, (size_t) timecnt, 1414 (size_t) sizeof *attypes, atcomp); 1415 /* 1416 ** Optimize. 1417 */ 1418 { 1419 int fromi; 1420 int toi; 1421 1422 toi = 0; 1423 fromi = 0; 1424 while (fromi < timecnt && attypes[fromi].at < min_time) 1425 ++fromi; 1426 if (isdsts[0] == 0) 1427 while (fromi < timecnt && attypes[fromi].type == 0) 1428 ++fromi; /* handled by default rule */ 1429 for ( ; fromi < timecnt; ++fromi) { 1430 if (toi != 0 1431 && ((attypes[fromi].at 1432 + gmtoffs[attypes[toi - 1].type]) 1433 <= (attypes[toi - 1].at 1434 + gmtoffs[toi == 1 ? 0 1435 : attypes[toi - 2].type]))) { 1436 attypes[toi - 1].type = attypes[fromi].type; 1437 continue; 1438 } 1439 if (toi == 0 || 1440 attypes[toi - 1].type != attypes[fromi].type) 1441 attypes[toi++] = attypes[fromi]; 1442 } 1443 timecnt = toi; 1444 } 1445 /* 1446 ** Transfer. 1447 */ 1448 for (i = 0; i < timecnt; ++i) { 1449 ats[i] = attypes[i].at; 1450 types[i] = attypes[i].type; 1451 } 1452 fullname = erealloc(fullname, 1453 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1454 (void) sprintf(fullname, "%s/%s", directory, name); 1455 1456 /* 1457 * Remove old file, if any, to snap links. 1458 */ 1459 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) 1460 err(EXIT_FAILURE, _("can't remove %s"), fullname); 1461 1462 if ((fp = fopen(fullname, "wb")) == NULL) { 1463 if (mkdirs(fullname) != 0) 1464 (void) exit(EXIT_FAILURE); 1465 if ((fp = fopen(fullname, "wb")) == NULL) 1466 err(EXIT_FAILURE, _("can't create %s"), fullname); 1467 } 1468 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1469 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1470 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1471 convert(eitol(timecnt), tzh.tzh_timecnt); 1472 convert(eitol(typecnt), tzh.tzh_typecnt); 1473 convert(eitol(charcnt), tzh.tzh_charcnt); 1474 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); 1475#define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1476 DO(tzh_magic); 1477 DO(tzh_reserved); 1478 DO(tzh_ttisgmtcnt); 1479 DO(tzh_ttisstdcnt); 1480 DO(tzh_leapcnt); 1481 DO(tzh_timecnt); 1482 DO(tzh_typecnt); 1483 DO(tzh_charcnt); 1484#undef DO 1485 for (i = 0; i < timecnt; ++i) { 1486 j = leapcnt; 1487 while (--j >= 0) 1488 if (ats[i] >= trans[j]) { 1489 ats[i] = tadd(ats[i], corr[j]); 1490 break; 1491 } 1492 puttzcode((long) ats[i], fp); 1493 } 1494 if (timecnt > 0) 1495 (void) fwrite((void *) types, (size_t) sizeof types[0], 1496 (size_t) timecnt, fp); 1497 for (i = 0; i < typecnt; ++i) { 1498 puttzcode((long) gmtoffs[i], fp); 1499 (void) putc(isdsts[i], fp); 1500 (void) putc(abbrinds[i], fp); 1501 } 1502 if (charcnt != 0) 1503 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1504 (size_t) charcnt, fp); 1505 for (i = 0; i < leapcnt; ++i) { 1506 if (roll[i]) { 1507 if (timecnt == 0 || trans[i] < ats[0]) { 1508 j = 0; 1509 while (isdsts[j]) 1510 if (++j >= typecnt) { 1511 j = 0; 1512 break; 1513 } 1514 } else { 1515 j = 1; 1516 while (j < timecnt && trans[i] >= ats[j]) 1517 ++j; 1518 j = types[j - 1]; 1519 } 1520 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1521 } else puttzcode((long) trans[i], fp); 1522 puttzcode((long) corr[i], fp); 1523 } 1524 for (i = 0; i < typecnt; ++i) 1525 (void) putc(ttisstds[i], fp); 1526 for (i = 0; i < typecnt; ++i) 1527 (void) putc(ttisgmts[i], fp); 1528 if (ferror(fp) || fclose(fp)) 1529 errx(EXIT_FAILURE, _("error writing %s"), fullname); 1530 if (chmod(fullname, mflag) < 0) 1531 err(EXIT_FAILURE, _("cannot change mode of %s to %03o"), 1532 fullname, (unsigned)mflag); 1533 if ((uflag != (uid_t)-1 || gflag != (gid_t)-1) 1534 && chown(fullname, uflag, gflag) < 0) 1535 err(EXIT_FAILURE, _("cannot change ownership of %s"), 1536 fullname); 1537} 1538 1539static void 1540doabbr(abbr, format, letters, isdst) 1541char * const abbr; 1542const char * const format; 1543const char * const letters; 1544const int isdst; 1545{ 1546 if (strchr(format, '/') == NULL) { 1547 if (letters == NULL) 1548 (void) strcpy(abbr, format); 1549 else (void) sprintf(abbr, format, letters); 1550 } else if (isdst) 1551 (void) strcpy(abbr, strchr(format, '/') + 1); 1552 else { 1553 (void) strcpy(abbr, format); 1554 *strchr(abbr, '/') = '\0'; 1555 } 1556} 1557 1558static void 1559outzone(zpfirst, zonecount) 1560const struct zone * const zpfirst; 1561const int zonecount; 1562{ 1563 register const struct zone * zp; 1564 register struct rule * rp; 1565 register int i, j; 1566 register int usestart, useuntil; 1567 register time_t starttime, untiltime; 1568 register long gmtoff; 1569 register long stdoff; 1570 register int year; 1571 register long startoff; 1572 register int startttisstd; 1573 register int startttisgmt; 1574 register int type; 1575 char startbuf[BUFSIZ]; 1576 1577 INITIALIZE(untiltime); 1578 INITIALIZE(starttime); 1579 /* 1580 ** Now. . .finally. . .generate some useful data! 1581 */ 1582 timecnt = 0; 1583 typecnt = 0; 1584 charcnt = 0; 1585 /* 1586 ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au) 1587 ** for noting the need to unconditionally initialize startttisstd. 1588 */ 1589 startttisstd = FALSE; 1590 startttisgmt = FALSE; 1591 for (i = 0; i < zonecount; ++i) { 1592 /* 1593 ** A guess that may well be corrected later. 1594 */ 1595 stdoff = 0; 1596 zp = &zpfirst[i]; 1597 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1598 useuntil = i < (zonecount - 1); 1599 if (useuntil && zp->z_untiltime <= min_time) 1600 continue; 1601 gmtoff = zp->z_gmtoff; 1602 eat(zp->z_filename, zp->z_linenum); 1603 *startbuf = '\0'; 1604 startoff = zp->z_gmtoff; 1605 if (zp->z_nrules == 0) { 1606 stdoff = zp->z_stdoff; 1607 doabbr(startbuf, zp->z_format, 1608 (char *) NULL, stdoff != 0); 1609 type = addtype(oadd(zp->z_gmtoff, stdoff), 1610 startbuf, stdoff != 0, startttisstd, 1611 startttisgmt); 1612 if (usestart) { 1613 addtt(starttime, type); 1614 usestart = FALSE; 1615 } else if (stdoff != 0) 1616 addtt(min_time, type); 1617 } else for (year = min_year; year <= max_year; ++year) { 1618 if (useuntil && year > zp->z_untilrule.r_hiyear) 1619 break; 1620 /* 1621 ** Mark which rules to do in the current year. 1622 ** For those to do, calculate rpytime(rp, year); 1623 */ 1624 for (j = 0; j < zp->z_nrules; ++j) { 1625 rp = &zp->z_rules[j]; 1626 eats(zp->z_filename, zp->z_linenum, 1627 rp->r_filename, rp->r_linenum); 1628 rp->r_todo = year >= rp->r_loyear && 1629 year <= rp->r_hiyear && 1630 yearistype(year, rp->r_yrtype); 1631 if (rp->r_todo) 1632 rp->r_temp = rpytime(rp, year); 1633 } 1634 for ( ; ; ) { 1635 register int k; 1636 register time_t jtime, ktime; 1637 register long offset; 1638 char buf[BUFSIZ]; 1639 1640 INITIALIZE(ktime); 1641 if (useuntil) { 1642 /* 1643 ** Turn untiltime into UTC 1644 ** assuming the current gmtoff and 1645 ** stdoff values. 1646 */ 1647 untiltime = zp->z_untiltime; 1648 if (!zp->z_untilrule.r_todisgmt) 1649 untiltime = tadd(untiltime, 1650 -gmtoff); 1651 if (!zp->z_untilrule.r_todisstd) 1652 untiltime = tadd(untiltime, 1653 -stdoff); 1654 } 1655 /* 1656 ** Find the rule (of those to do, if any) 1657 ** that takes effect earliest in the year. 1658 */ 1659 k = -1; 1660 for (j = 0; j < zp->z_nrules; ++j) { 1661 rp = &zp->z_rules[j]; 1662 if (!rp->r_todo) 1663 continue; 1664 eats(zp->z_filename, zp->z_linenum, 1665 rp->r_filename, rp->r_linenum); 1666 offset = rp->r_todisgmt ? 0 : gmtoff; 1667 if (!rp->r_todisstd) 1668 offset = oadd(offset, stdoff); 1669 jtime = rp->r_temp; 1670 if (jtime == min_time || 1671 jtime == max_time) 1672 continue; 1673 jtime = tadd(jtime, -offset); 1674 if (k < 0 || jtime < ktime) { 1675 k = j; 1676 ktime = jtime; 1677 } 1678 } 1679 if (k < 0) 1680 break; /* go on to next year */ 1681 rp = &zp->z_rules[k]; 1682 rp->r_todo = FALSE; 1683 if (useuntil && ktime >= untiltime) 1684 break; 1685 stdoff = rp->r_stdoff; 1686 if (usestart && ktime == starttime) 1687 usestart = FALSE; 1688 if (usestart) { 1689 if (ktime < starttime) { 1690 startoff = oadd(zp->z_gmtoff, 1691 stdoff); 1692 doabbr(startbuf, zp->z_format, 1693 rp->r_abbrvar, 1694 rp->r_stdoff != 0); 1695 continue; 1696 } 1697 if (*startbuf == '\0' && 1698 startoff == oadd(zp->z_gmtoff, 1699 stdoff)) { 1700 doabbr(startbuf, zp->z_format, 1701 rp->r_abbrvar, 1702 rp->r_stdoff != 0); 1703 } 1704 } 1705 eats(zp->z_filename, zp->z_linenum, 1706 rp->r_filename, rp->r_linenum); 1707 doabbr(buf, zp->z_format, rp->r_abbrvar, 1708 rp->r_stdoff != 0); 1709 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1710 type = addtype(offset, buf, rp->r_stdoff != 0, 1711 rp->r_todisstd, rp->r_todisgmt); 1712 addtt(ktime, type); 1713 } 1714 } 1715 if (usestart) { 1716 if (*startbuf == '\0' && 1717 zp->z_format != NULL && 1718 strchr(zp->z_format, '%') == NULL && 1719 strchr(zp->z_format, '/') == NULL) 1720 (void) strcpy(startbuf, zp->z_format); 1721 eat(zp->z_filename, zp->z_linenum); 1722 if (*startbuf == '\0') 1723error(_("can't determine time zone abbreviation to use just after until time")); 1724 else addtt(starttime, 1725 addtype(startoff, startbuf, 1726 startoff != zp->z_gmtoff, 1727 startttisstd, 1728 startttisgmt)); 1729 } 1730 /* 1731 ** Now we may get to set starttime for the next zone line. 1732 */ 1733 if (useuntil) { 1734 startttisstd = zp->z_untilrule.r_todisstd; 1735 startttisgmt = zp->z_untilrule.r_todisgmt; 1736 starttime = zp->z_untiltime; 1737 if (!startttisstd) 1738 starttime = tadd(starttime, -stdoff); 1739 if (!startttisgmt) 1740 starttime = tadd(starttime, -gmtoff); 1741 } 1742 } 1743 writezone(zpfirst->z_name); 1744} 1745 1746static void 1747addtt(starttime, type) 1748const time_t starttime; 1749int type; 1750{ 1751 if (starttime <= min_time || 1752 (timecnt == 1 && attypes[0].at < min_time)) { 1753 gmtoffs[0] = gmtoffs[type]; 1754 isdsts[0] = isdsts[type]; 1755 ttisstds[0] = ttisstds[type]; 1756 ttisgmts[0] = ttisgmts[type]; 1757 if (abbrinds[type] != 0) 1758 (void) strcpy(chars, &chars[abbrinds[type]]); 1759 abbrinds[0] = 0; 1760 charcnt = strlen(chars) + 1; 1761 typecnt = 1; 1762 timecnt = 0; 1763 type = 0; 1764 } 1765 if (timecnt >= TZ_MAX_TIMES) { 1766 error(_("too many transitions?!")); 1767 (void) exit(EXIT_FAILURE); 1768 } 1769 attypes[timecnt].at = starttime; 1770 attypes[timecnt].type = type; 1771 ++timecnt; 1772} 1773 1774static int 1775addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1776const long gmtoff; 1777const char * const abbr; 1778const int isdst; 1779const int ttisstd; 1780const int ttisgmt; 1781{ 1782 register int i, j; 1783 1784 if (isdst != TRUE && isdst != FALSE) { 1785 error(_("internal error - addtype called with bad isdst")); 1786 (void) exit(EXIT_FAILURE); 1787 } 1788 if (ttisstd != TRUE && ttisstd != FALSE) { 1789 error(_("internal error - addtype called with bad ttisstd")); 1790 (void) exit(EXIT_FAILURE); 1791 } 1792 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1793 error(_("internal error - addtype called with bad ttisgmt")); 1794 (void) exit(EXIT_FAILURE); 1795 } 1796 /* 1797 ** See if there's already an entry for this zone type. 1798 ** If so, just return its index. 1799 */ 1800 for (i = 0; i < typecnt; ++i) { 1801 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1802 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1803 ttisstd == ttisstds[i] && 1804 ttisgmt == ttisgmts[i]) 1805 return i; 1806 } 1807 /* 1808 ** There isn't one; add a new one, unless there are already too 1809 ** many. 1810 */ 1811 if (typecnt >= TZ_MAX_TYPES) { 1812 error(_("too many local time types")); 1813 (void) exit(EXIT_FAILURE); 1814 } 1815 gmtoffs[i] = gmtoff; 1816 isdsts[i] = isdst; 1817 ttisstds[i] = ttisstd; 1818 ttisgmts[i] = ttisgmt; 1819 1820 for (j = 0; j < charcnt; ++j) 1821 if (strcmp(&chars[j], abbr) == 0) 1822 break; 1823 if (j == charcnt) 1824 newabbr(abbr); 1825 abbrinds[i] = j; 1826 ++typecnt; 1827 return i; 1828} 1829 1830static void 1831leapadd(t, positive, rolling, count) 1832const time_t t; 1833const int positive; 1834const int rolling; 1835int count; 1836{ 1837 register int i, j; 1838 1839 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1840 error(_("too many leap seconds")); 1841 (void) exit(EXIT_FAILURE); 1842 } 1843 for (i = 0; i < leapcnt; ++i) 1844 if (t <= trans[i]) { 1845 if (t == trans[i]) { 1846 error(_("repeated leap second moment")); 1847 (void) exit(EXIT_FAILURE); 1848 } 1849 break; 1850 } 1851 do { 1852 for (j = leapcnt; j > i; --j) { 1853 trans[j] = trans[j - 1]; 1854 corr[j] = corr[j - 1]; 1855 roll[j] = roll[j - 1]; 1856 } 1857 trans[i] = t; 1858 corr[i] = positive ? 1L : eitol(-count); 1859 roll[i] = rolling; 1860 ++leapcnt; 1861 } while (positive && --count != 0); 1862} 1863 1864static void 1865adjleap P((void)) 1866{ 1867 register int i; 1868 register long last = 0; 1869 1870 /* 1871 ** propagate leap seconds forward 1872 */ 1873 for (i = 0; i < leapcnt; ++i) { 1874 trans[i] = tadd(trans[i], last); 1875 last = corr[i] += last; 1876 } 1877} 1878 1879static int 1880yearistype(year, type) 1881const int year; 1882const char * const type; 1883{ 1884 static char * buf; 1885 int result; 1886 1887 if (type == NULL || *type == '\0') 1888 return TRUE; 1889 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1890 (void) sprintf(buf, "%s %d %s", yitcommand, year, type); 1891 result = system(buf); 1892 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) { 1893 case 0: 1894 return TRUE; 1895 case 1: 1896 return FALSE; 1897 } 1898 error(_("wild result from command execution")); 1899 warnx(_("command was '%s', result was %d"), buf, result); 1900 for ( ; ; ) 1901 (void) exit(EXIT_FAILURE); 1902} 1903 1904static int 1905lowerit(a) 1906int a; 1907{ 1908 a = (unsigned char) a; 1909 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1910} 1911 1912static int 1913ciequal(ap, bp) /* case-insensitive equality */ 1914register const char * ap; 1915register const char * bp; 1916{ 1917 while (lowerit(*ap) == lowerit(*bp++)) 1918 if (*ap++ == '\0') 1919 return TRUE; 1920 return FALSE; 1921} 1922 1923static int 1924itsabbr(abbr, word) 1925register const char * abbr; 1926register const char * word; 1927{ 1928 if (lowerit(*abbr) != lowerit(*word)) 1929 return FALSE; 1930 ++word; 1931 while (*++abbr != '\0') 1932 do { 1933 if (*word == '\0') 1934 return FALSE; 1935 } while (lowerit(*word++) != lowerit(*abbr)); 1936 return TRUE; 1937} 1938 1939static const struct lookup * 1940byword(word, table) 1941register const char * const word; 1942register const struct lookup * const table; 1943{ 1944 register const struct lookup * foundlp; 1945 register const struct lookup * lp; 1946 1947 if (word == NULL || table == NULL) 1948 return NULL; 1949 /* 1950 ** Look for exact match. 1951 */ 1952 for (lp = table; lp->l_word != NULL; ++lp) 1953 if (ciequal(word, lp->l_word)) 1954 return lp; 1955 /* 1956 ** Look for inexact match. 1957 */ 1958 foundlp = NULL; 1959 for (lp = table; lp->l_word != NULL; ++lp) 1960 if (itsabbr(word, lp->l_word)) { 1961 if (foundlp == NULL) 1962 foundlp = lp; 1963 else return NULL; /* multiple inexact matches */ 1964 } 1965 return foundlp; 1966} 1967 1968static char ** 1969getfields(cp) 1970register char * cp; 1971{ 1972 register char * dp; 1973 register char ** array; 1974 register int nsubs; 1975 1976 if (cp == NULL) 1977 return NULL; 1978 array = (char **) (void *) 1979 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 1980 nsubs = 0; 1981 for ( ; ; ) { 1982 while (isascii(*cp) && isspace((unsigned char) *cp)) 1983 ++cp; 1984 if (*cp == '\0' || *cp == '#') 1985 break; 1986 array[nsubs++] = dp = cp; 1987 do { 1988 if ((*dp = *cp++) != '"') 1989 ++dp; 1990 else while ((*dp = *cp++) != '"') 1991 if (*dp != '\0') 1992 ++dp; 1993 else error(_("odd number of quotation marks")); 1994 } while (*cp != '\0' && *cp != '#' && 1995 (!isascii(*cp) || !isspace((unsigned char) *cp))); 1996 if (isascii(*cp) && isspace((unsigned char) *cp)) 1997 ++cp; 1998 *dp = '\0'; 1999 } 2000 array[nsubs] = NULL; 2001 return array; 2002} 2003 2004static long 2005oadd(t1, t2) 2006const long t1; 2007const long t2; 2008{ 2009 register long t; 2010 2011 t = t1 + t2; 2012 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2013 error(_("time overflow")); 2014 (void) exit(EXIT_FAILURE); 2015 } 2016 return t; 2017} 2018 2019static time_t 2020tadd(t1, t2) 2021const time_t t1; 2022const long t2; 2023{ 2024 register time_t t; 2025 2026 if (t1 == max_time && t2 > 0) 2027 return max_time; 2028 if (t1 == min_time && t2 < 0) 2029 return min_time; 2030 t = t1 + t2; 2031 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2032 error(_("time overflow")); 2033 (void) exit(EXIT_FAILURE); 2034 } 2035 return t; 2036} 2037 2038/* 2039** Given a rule, and a year, compute the date - in seconds since January 1, 2040** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2041*/ 2042 2043static time_t 2044rpytime(rp, wantedy) 2045register const struct rule * const rp; 2046register const int wantedy; 2047{ 2048 register int y, m, i; 2049 register long dayoff; /* with a nod to Margaret O. */ 2050 register time_t t; 2051 2052 if (wantedy == INT_MIN) 2053 return min_time; 2054 if (wantedy == INT_MAX) 2055 return max_time; 2056 dayoff = 0; 2057 m = TM_JANUARY; 2058 y = EPOCH_YEAR; 2059 while (wantedy != y) { 2060 if (wantedy > y) { 2061 i = len_years[isleap(y)]; 2062 ++y; 2063 } else { 2064 --y; 2065 i = -len_years[isleap(y)]; 2066 } 2067 dayoff = oadd(dayoff, eitol(i)); 2068 } 2069 while (m != rp->r_month) { 2070 i = len_months[isleap(y)][m]; 2071 dayoff = oadd(dayoff, eitol(i)); 2072 ++m; 2073 } 2074 i = rp->r_dayofmonth; 2075 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2076 if (rp->r_dycode == DC_DOWLEQ) 2077 --i; 2078 else { 2079 error(_("use of 2/29 in non leap-year")); 2080 (void) exit(EXIT_FAILURE); 2081 } 2082 } 2083 --i; 2084 dayoff = oadd(dayoff, eitol(i)); 2085 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2086 register long wday; 2087 2088#define LDAYSPERWEEK ((long) DAYSPERWEEK) 2089 wday = eitol(EPOCH_WDAY); 2090 /* 2091 ** Don't trust mod of negative numbers. 2092 */ 2093 if (dayoff >= 0) 2094 wday = (wday + dayoff) % LDAYSPERWEEK; 2095 else { 2096 wday -= ((-dayoff) % LDAYSPERWEEK); 2097 if (wday < 0) 2098 wday += LDAYSPERWEEK; 2099 } 2100 while (wday != eitol(rp->r_wday)) 2101 if (rp->r_dycode == DC_DOWGEQ) { 2102 dayoff = oadd(dayoff, (long) 1); 2103 if (++wday >= LDAYSPERWEEK) 2104 wday = 0; 2105 ++i; 2106 } else { 2107 dayoff = oadd(dayoff, (long) -1); 2108 if (--wday < 0) 2109 wday = LDAYSPERWEEK - 1; 2110 --i; 2111 } 2112 if (i < 0 || i >= len_months[isleap(y)][m]) { 2113 if (noise) 2114 warning(_("rule goes past start/end of month--will not work with pre-2004 versions of zic")); 2115 } 2116 } 2117 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2118 return min_time; 2119 if (dayoff < min_time / SECSPERDAY) 2120 return min_time; 2121 if (dayoff > max_time / SECSPERDAY) 2122 return max_time; 2123 t = (time_t) dayoff * SECSPERDAY; 2124 return tadd(t, rp->r_tod); 2125} 2126 2127static void 2128newabbr(string) 2129const char * const string; 2130{ 2131 register int i; 2132 2133 i = strlen(string) + 1; 2134 if (charcnt + i > TZ_MAX_CHARS) { 2135 error(_("too many, or too long, time zone abbreviations")); 2136 (void) exit(EXIT_FAILURE); 2137 } 2138 (void) strcpy(&chars[charcnt], string); 2139 charcnt += eitol(i); 2140} 2141 2142static int 2143mkdirs(argname) 2144char * const argname; 2145{ 2146 register char * name; 2147 register char * cp; 2148 2149 if (argname == NULL || *argname == '\0' || Dflag) 2150 return 0; 2151 cp = name = ecpyalloc(argname); 2152 while ((cp = strchr(cp + 1, '/')) != 0) { 2153 *cp = '\0'; 2154#ifndef unix 2155 /* 2156 ** DOS drive specifier? 2157 */ 2158 if (isalpha((unsigned char) name[0]) && 2159 name[1] == ':' && name[2] == '\0') { 2160 *cp = '/'; 2161 continue; 2162 } 2163#endif /* !defined unix */ 2164 if (!itsdir(name)) { 2165 /* 2166 ** It doesn't seem to exist, so we try to create it. 2167 ** Creation may fail because of the directory being 2168 ** created by some other multiprocessor, so we get 2169 ** to do extra checking. 2170 */ 2171 if (mkdir(name, MKDIR_UMASK) != 0 2172 && (errno != EEXIST || !itsdir(name))) { 2173 warn(_("can't create directory %s"), name); 2174 ifree(name); 2175 return -1; 2176 } 2177 } 2178 *cp = '/'; 2179 } 2180 ifree(name); 2181 return 0; 2182} 2183 2184static long 2185eitol(i) 2186const int i; 2187{ 2188 long l; 2189 2190 l = i; 2191 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) 2192 errx(EXIT_FAILURE, _("%d did not sign extend correctly"), i); 2193 return l; 2194} 2195 2196#include <grp.h> 2197#include <pwd.h> 2198 2199static void 2200setgroup(flag, name) 2201 gid_t *flag; 2202 const char *name; 2203{ 2204 struct group *gr; 2205 2206 if (*flag != (gid_t)-1) 2207 errx(EXIT_FAILURE, _("multiple -g flags specified")); 2208 2209 gr = getgrnam(name); 2210 if (gr == 0) { 2211 char *ep; 2212 unsigned long ul; 2213 2214 ul = strtoul(name, &ep, 10); 2215 if (ul == (unsigned long)(gid_t)ul && *ep == '\0') { 2216 *flag = ul; 2217 return; 2218 } 2219 errx(EXIT_FAILURE, _("group `%s' not found"), name); 2220 } 2221 *flag = gr->gr_gid; 2222} 2223 2224static void 2225setuser(flag, name) 2226 uid_t *flag; 2227 const char *name; 2228{ 2229 struct passwd *pw; 2230 2231 if (*flag != (gid_t)-1) 2232 errx(EXIT_FAILURE, _("multiple -u flags specified")); 2233 2234 pw = getpwnam(name); 2235 if (pw == 0) { 2236 char *ep; 2237 unsigned long ul; 2238 2239 ul = strtoul(name, &ep, 10); 2240 if (ul == (unsigned long)(gid_t)ul && *ep == '\0') { 2241 *flag = ul; 2242 return; 2243 } 2244 errx(EXIT_FAILURE, _("user `%s' not found"), name); 2245 } 2246 *flag = pw->pw_uid; 2247} 2248 2249/* 2250** UNIX was a registered trademark of The Open Group in 2003. 2251*/ 2252