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[glibc.git] / timezone / zic.c
blob296f284c2aaf229945baa269538b92d4c4d70901
1 #ifndef lint
2 #ifndef NOID
3 static char elsieid[] = "@(#)zic.c 7.99";
4 #endif /* !defined NOID */
5 #endif /* !defined lint */
6
7 #include "private.h"
8 #include "locale.h"
9 #include "tzfile.h"
10 #ifdef unix
11 #include "sys/stat.h" /* for umask manifest constants */
12 #endif /* defined unix */
13
14 /*
15 ** On some ancient hosts, predicates like `isspace(C)' are defined
16 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
17 ** which says they are defined only if C == ((unsigned char) C) || C == EOF.
18 ** Neither the C Standard nor Posix require that `isascii' exist.
19 ** For portability, we check both ancient and modern requirements.
20 ** If isascii is not defined, the isascii check succeeds trivially.
21 */
22 #include "ctype.h"
23 #ifndef isascii
24 #define isascii(x) 1
25 #endif
26
27 struct rule {
28 const char * r_filename;
29 int r_linenum;
30 const char * r_name;
31
32 int r_loyear; /* for example, 1986 */
33 int r_hiyear; /* for example, 1986 */
34 const char * r_yrtype;
35
36 int r_month; /* 0..11 */
37
38 int r_dycode; /* see below */
39 int r_dayofmonth;
40 int r_wday;
41
42 long r_tod; /* time from midnight */
43 int r_todisstd; /* above is standard time if TRUE */
44 /* or wall clock time if FALSE */
45 int r_todisgmt; /* above is GMT if TRUE */
46 /* or local time if FALSE */
47 long r_stdoff; /* offset from standard time */
48 const char * r_abbrvar; /* variable part of abbreviation */
49
50 int r_todo; /* a rule to do (used in outzone) */
51 time_t r_temp; /* used in outzone */
52 };
53
54 /*
55 ** r_dycode r_dayofmonth r_wday
56 */
57
58 #define DC_DOM 0 /* 1..31 */ /* unused */
59 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
60 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
61
62 struct zone {
63 const char * z_filename;
64 int z_linenum;
65
66 const char * z_name;
67 long z_gmtoff;
68 const char * z_rule;
69 const char * z_format;
70
71 long z_stdoff;
72
73 struct rule * z_rules;
74 int z_nrules;
75
76 struct rule z_untilrule;
77 time_t z_untiltime;
78 };
79
80 extern int getopt P((int argc, char * const argv[],
81 const char * options));
82 extern int link P((const char * fromname, const char * toname));
83 extern char * optarg;
84 extern int optind;
85
86 static void addtt P((time_t starttime, int type));
87 static int addtype P((long gmtoff, const char * abbr, int isdst,
88 int ttisstd, int ttisgmt));
89 static void leapadd P((time_t t, int positive, int rolling, int count));
90 static void adjleap P((void));
91 static void associate P((void));
92 static int ciequal P((const char * ap, const char * bp));
93 static void convert P((long val, char * buf));
94 static void dolink P((const char * fromfile, const char * tofile));
95 static void doabbr P((char * abbr, const char * format,
96 const char * letters, int isdst));
97 static void eat P((const char * name, int num));
98 static void eats P((const char * name, int num,
99 const char * rname, int rnum));
100 static long eitol P((int i));
101 static void error P((const char * message));
102 static char ** getfields P((char * buf));
103 static long gethms P((const char * string, const char * errstrng,
104 int signable));
105 static void infile P((const char * filename));
106 static void inleap P((char ** fields, int nfields));
107 static void inlink P((char ** fields, int nfields));
108 static void inrule P((char ** fields, int nfields));
109 static int inzcont P((char ** fields, int nfields));
110 static int inzone P((char ** fields, int nfields));
111 static int inzsub P((char ** fields, int nfields, int iscont));
112 static int itsabbr P((const char * abbr, const char * word));
113 static int itsdir P((const char * name));
114 static int lowerit P((int c));
115 static char * memcheck P((char * tocheck));
116 static int mkdirs P((char * filename));
117 static void newabbr P((const char * abbr));
118 static long oadd P((long t1, long t2));
119 static void outzone P((const struct zone * zp, int ntzones));
120 static void puttzcode P((long code, FILE * fp));
121 static int rcomp P((const void * leftp, const void * rightp));
122 static time_t rpytime P((const struct rule * rp, int wantedy));
123 static void rulesub P((struct rule * rp,
124 const char * loyearp, const char * hiyearp,
125 const char * typep, const char * monthp,
126 const char * dayp, const char * timep));
127 static void setboundaries P((void));
128 static time_t tadd P((time_t t1, long t2));
129 static void usage P((void));
130 static void writezone P((const char * name));
131 static int yearistype P((int year, const char * type));
132
133 #if !(HAVE_STRERROR - 0)
134 static char * strerror P((int));
135 #endif /* !(HAVE_STRERROR - 0) */
136
137 static int charcnt;
138 static int errors;
139 static const char * filename;
140 static int leapcnt;
141 static int linenum;
142 static time_t max_time;
143 static int max_year;
144 static int max_year_representable;
145 static time_t min_time;
146 static int min_year;
147 static int min_year_representable;
148 static int noise;
149 static const char * rfilename;
150 static int rlinenum;
151 static const char * progname;
152 static int timecnt;
153 static int typecnt;
154
155 /*
156 ** Line codes.
157 */
158
159 #define LC_RULE 0
160 #define LC_ZONE 1
161 #define LC_LINK 2
162 #define LC_LEAP 3
163
164 /*
165 ** Which fields are which on a Zone line.
166 */
167
168 #define ZF_NAME 1
169 #define ZF_GMTOFF 2
170 #define ZF_RULE 3
171 #define ZF_FORMAT 4
172 #define ZF_TILYEAR 5
173 #define ZF_TILMONTH 6
174 #define ZF_TILDAY 7
175 #define ZF_TILTIME 8
176 #define ZONE_MINFIELDS 5
177 #define ZONE_MAXFIELDS 9
178
179 /*
180 ** Which fields are which on a Zone continuation line.
181 */
182
183 #define ZFC_GMTOFF 0
184 #define ZFC_RULE 1
185 #define ZFC_FORMAT 2
186 #define ZFC_TILYEAR 3
187 #define ZFC_TILMONTH 4
188 #define ZFC_TILDAY 5
189 #define ZFC_TILTIME 6
190 #define ZONEC_MINFIELDS 3
191 #define ZONEC_MAXFIELDS 7
192
193 /*
194 ** Which files are which on a Rule line.
195 */
196
197 #define RF_NAME 1
198 #define RF_LOYEAR 2
199 #define RF_HIYEAR 3
200 #define RF_COMMAND 4
201 #define RF_MONTH 5
202 #define RF_DAY 6
203 #define RF_TOD 7
204 #define RF_STDOFF 8
205 #define RF_ABBRVAR 9
206 #define RULE_FIELDS 10
207
208 /*
209 ** Which fields are which on a Link line.
210 */
211
212 #define LF_FROM 1
213 #define LF_TO 2
214 #define LINK_FIELDS 3
215
216 /*
217 ** Which fields are which on a Leap line.
218 */
219
220 #define LP_YEAR 1
221 #define LP_MONTH 2
222 #define LP_DAY 3
223 #define LP_TIME 4
224 #define LP_CORR 5
225 #define LP_ROLL 6
226 #define LEAP_FIELDS 7
227
228 /*
229 ** Year synonyms.
230 */
231
232 #define YR_MINIMUM 0
233 #define YR_MAXIMUM 1
234 #define YR_ONLY 2
235
236 static struct rule * rules;
237 static int nrules; /* number of rules */
238
239 static struct zone * zones;
240 static int nzones; /* number of zones */
241
242 struct link {
243 const char * l_filename;
244 int l_linenum;
245 const char * l_from;
246 const char * l_to;
247 };
248
249 static struct link * links;
250 static int nlinks;
251
252 struct lookup {
253 const char * l_word;
254 const int l_value;
255 };
256
257 static struct lookup const * byword P((const char * string,
258 const struct lookup * lp));
259
260 static struct lookup const line_codes[] = {
261 { "Rule", LC_RULE },
262 { "Zone", LC_ZONE },
263 { "Link", LC_LINK },
264 { "Leap", LC_LEAP },
265 { NULL, 0}
266 };
267
268 static struct lookup const mon_names[] = {
269 { "January", TM_JANUARY },
270 { "February", TM_FEBRUARY },
271 { "March", TM_MARCH },
272 { "April", TM_APRIL },
273 { "May", TM_MAY },
274 { "June", TM_JUNE },
275 { "July", TM_JULY },
276 { "August", TM_AUGUST },
277 { "September", TM_SEPTEMBER },
278 { "October", TM_OCTOBER },
279 { "November", TM_NOVEMBER },
280 { "December", TM_DECEMBER },
281 { NULL, 0 }
282 };
283
284 static struct lookup const wday_names[] = {
285 { "Sunday", TM_SUNDAY },
286 { "Monday", TM_MONDAY },
287 { "Tuesday", TM_TUESDAY },
288 { "Wednesday", TM_WEDNESDAY },
289 { "Thursday", TM_THURSDAY },
290 { "Friday", TM_FRIDAY },
291 { "Saturday", TM_SATURDAY },
292 { NULL, 0 }
293 };
294
295 static struct lookup const lasts[] = {
296 { "last-Sunday", TM_SUNDAY },
297 { "last-Monday", TM_MONDAY },
298 { "last-Tuesday", TM_TUESDAY },
299 { "last-Wednesday", TM_WEDNESDAY },
300 { "last-Thursday", TM_THURSDAY },
301 { "last-Friday", TM_FRIDAY },
302 { "last-Saturday", TM_SATURDAY },
303 { NULL, 0 }
304 };
305
306 static struct lookup const begin_years[] = {
307 { "minimum", YR_MINIMUM },
308 { "maximum", YR_MAXIMUM },
309 { NULL, 0 }
310 };
311
312 static struct lookup const end_years[] = {
313 { "minimum", YR_MINIMUM },
314 { "maximum", YR_MAXIMUM },
315 { "only", YR_ONLY },
316 { NULL, 0 }
317 };
318
319 static struct lookup const leap_types[] = {
320 { "Rolling", TRUE },
321 { "Stationary", FALSE },
322 { NULL, 0 }
323 };
324
325 static const int len_months[2][MONSPERYEAR] = {
326 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
327 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
328 };
329
330 static const int len_years[2] = {
331 DAYSPERNYEAR, DAYSPERLYEAR
332 };
333
334 static struct attype {
335 time_t at;
336 unsigned char type;
337 } attypes[TZ_MAX_TIMES];
338 static long gmtoffs[TZ_MAX_TYPES];
339 static char isdsts[TZ_MAX_TYPES];
340 static unsigned char abbrinds[TZ_MAX_TYPES];
341 static char ttisstds[TZ_MAX_TYPES];
342 static char ttisgmts[TZ_MAX_TYPES];
343 static char chars[TZ_MAX_CHARS];
344 static time_t trans[TZ_MAX_LEAPS];
345 static long corr[TZ_MAX_LEAPS];
346 static char roll[TZ_MAX_LEAPS];
347
348 /*
349 ** Memory allocation.
350 */
351
352 static char *
353 memcheck(ptr)
354 char * const ptr;
355 {
356 if (ptr == NULL) {
357 const char *e = strerror(errno);
358
359 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
360 progname, e);
361 (void) exit(EXIT_FAILURE);
362 }
363 return ptr;
364 }
365
366 #define emalloc(size) memcheck(imalloc(size))
367 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size)))
368 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
369 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
370
371 /*
372 ** Error handling.
373 */
374
375 #if !(HAVE_STRERROR - 0)
376 static char *
377 strerror(errnum)
378 int errnum;
379 {
380 extern char * sys_errlist[];
381 extern int sys_nerr;
382
383 return (errnum > 0 && errnum <= sys_nerr) ?
384 sys_errlist[errnum] : _("Unknown system error");
385 }
386 #endif /* !(HAVE_STRERROR - 0) */
387
388 static void
389 eats(name, num, rname, rnum)
390 const char * const name;
391 const int num;
392 const char * const rname;
393 const int rnum;
394 {
395 filename = name;
396 linenum = num;
397 rfilename = rname;
398 rlinenum = rnum;
399 }
400
401 static void
402 eat(name, num)
403 const char * const name;
404 const int num;
405 {
406 eats(name, num, (char *) NULL, -1);
407 }
408
409 static void
410 error(string)
411 const char * const string;
412 {
413 /*
414 ** Match the format of "cc" to allow sh users to
415 ** zic ... 2>&1 | error -t "*" -v
416 ** on BSD systems.
417 */
418 (void) fprintf(stderr, _("\"%s\", line %d: %s"),
419 filename, linenum, string);
420 if (rfilename != NULL)
421 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"),
422 rfilename, rlinenum);
423 (void) fprintf(stderr, "\n");
424 ++errors;
425 }
426
427 static void
428 warning(string)
429 const char * const string;
430 {
431 char * cp;
432
433 cp = ecpyalloc(_("warning: "));
434 cp = ecatalloc(cp, string);
435 error(cp);
436 ifree(cp);
437 --errors;
438 }
439
440 static void
441 usage P((void))
442 {
443 (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"),
444 progname, progname);
445 (void) exit(EXIT_FAILURE);
446 }
447
448 static const char * psxrules;
449 static const char * lcltime;
450 static const char * directory;
451 static const char * leapsec;
452 static const char * yitcommand;
453 static int sflag = FALSE;
454
455 int
456 main(argc, argv)
457 int argc;
458 char * 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 progname = argv[0];
475 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
476 switch (c) {
477 default:
478 usage();
479 case 'd':
480 if (directory == NULL)
481 directory = optarg;
482 else {
483 (void) fprintf(stderr,
484 _("%s: More than one -d option specified\n"),
485 progname);
486 (void) exit(EXIT_FAILURE);
487 }
488 break;
489 case 'l':
490 if (lcltime == NULL)
491 lcltime = optarg;
492 else {
493 (void) fprintf(stderr,
494 _("%s: More than one -l option specified\n"),
495 progname);
496 (void) exit(EXIT_FAILURE);
497 }
498 break;
499 case 'p':
500 if (psxrules == NULL)
501 psxrules = optarg;
502 else {
503 (void) fprintf(stderr,
504 _("%s: More than one -p option specified\n"),
505 progname);
506 (void) exit(EXIT_FAILURE);
507 }
508 break;
509 case 'y':
510 if (yitcommand == NULL)
511 yitcommand = optarg;
512 else {
513 (void) fprintf(stderr,
514 _("%s: More than one -y option specified\n"),
515 progname);
516 (void) exit(EXIT_FAILURE);
517 }
518 break;
519 case 'L':
520 if (leapsec == NULL)
521 leapsec = optarg;
522 else {
523 (void) fprintf(stderr,
524 _("%s: More than one -L option specified\n"),
525 progname);
526 (void) exit(EXIT_FAILURE);
527 }
528 break;
529 case 'v':
530 noise = TRUE;
531 break;
532 case 's':
533 sflag = TRUE;
534 break;
535 }
536 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
537 usage(); /* usage message by request */
538 if (directory == NULL)
539 directory = TZDIR;
540 if (yitcommand == NULL)
541 yitcommand = "yearistype";
542
543 setboundaries();
544
545 if (optind < argc && leapsec != NULL) {
546 infile(leapsec);
547 adjleap();
548 }
549
550 for (i = optind; i < argc; ++i)
551 infile(argv[i]);
552 if (errors)
553 (void) exit(EXIT_FAILURE);
554 associate();
555 for (i = 0; i < nzones; i = j) {
556 /*
557 ** Find the next non-continuation zone entry.
558 */
559 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
560 continue;
561 outzone(&zones[i], j - i);
562 }
563 /*
564 ** Make links.
565 */
566 for (i = 0; i < nlinks; ++i) {
567 eat(links[i].l_filename, links[i].l_linenum);
568 dolink(links[i].l_from, links[i].l_to);
569 }
570 if (lcltime != NULL) {
571 eat("command line", 1);
572 dolink(lcltime, TZDEFAULT);
573 }
574 if (psxrules != NULL) {
575 eat("command line", 1);
576 dolink(psxrules, TZDEFRULES);
577 }
578 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
579 }
580
581 static void
582 dolink(fromfile, tofile)
583 const char * const fromfile;
584 const char * const tofile;
585 {
586 register char * fromname;
587 register char * toname;
588
589 if (fromfile[0] == '/')
590 fromname = ecpyalloc(fromfile);
591 else {
592 fromname = ecpyalloc(directory);
593 fromname = ecatalloc(fromname, "/");
594 fromname = ecatalloc(fromname, fromfile);
595 }
596 if (tofile[0] == '/')
597 toname = ecpyalloc(tofile);
598 else {
599 toname = ecpyalloc(directory);
600 toname = ecatalloc(toname, "/");
601 toname = ecatalloc(toname, tofile);
602 }
603 /*
604 ** We get to be careful here since
605 ** there's a fair chance of root running us.
606 */
607 if (!itsdir(toname))
608 (void) remove(toname);
609 if (link(fromname, toname) != 0) {
610 int result;
611
612 if (mkdirs(toname) != 0)
613 (void) exit(EXIT_FAILURE);
614
615 result = link(fromname, toname);
616 #if (HAVE_SYMLINK - 0)
617 if (result != 0) {
618 char *s = (char *) tofile;
619 register char *symlinkcontents = NULL;
620 while ((s = strchr(s+1, '/')) != NULL)
621 symlinkcontents = ecatalloc(symlinkcontents, "../");
622 symlinkcontents = ecatalloc(symlinkcontents, fromname);
623
624 result = unlink(toname);
625 if (result != 0 && errno != ENOENT) {
626 const char *e = strerror(errno);
627
628 (void) fprintf(stderr,
629 _("%s: Can't unlink %s: %s\n"),
630 progname, toname, e);
631 (void) exit(EXIT_FAILURE);
632 }
633
634 result = symlink(symlinkcontents, toname);
635 if (result == 0)
636 warning(_("hard link failed, symbolic link used"));
637 ifree(symlinkcontents);
638 }
639 #endif
640 if (result != 0) {
641 const char *e = strerror(errno);
642
643 (void) fprintf(stderr,
644 _("%s: Can't link from %s to %s: %s\n"),
645 progname, fromname, toname, e);
646 (void) exit(EXIT_FAILURE);
647 }
648 }
649 ifree(fromname);
650 ifree(toname);
651 }
652
653 #ifndef INT_MAX
654 #define INT_MAX ((int) (((unsigned)~0)>>1))
655 #endif /* !defined INT_MAX */
656
657 #ifndef INT_MIN
658 #define INT_MIN ((int) ~(((unsigned)~0)>>1))
659 #endif /* !defined INT_MIN */
660
661 /*
662 ** The tz file format currently allows at most 32-bit quantities.
663 ** This restriction should be removed before signed 32-bit values
664 ** wrap around in 2038, but unfortunately this will require a
665 ** change to the tz file format.
666 */
667
668 #define MAX_BITS_IN_FILE 32
669 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)
670
671 static void
672 setboundaries P((void))
673 {
674 if (TYPE_SIGNED(time_t)) {
675 min_time = ~ (time_t) 0;
676 min_time <<= TIME_T_BITS_IN_FILE - 1;
677 max_time = ~ (time_t) 0 - min_time;
678 if (sflag)
679 min_time = 0;
680 } else {
681 min_time = 0;
682 max_time = 2 - sflag;
683 max_time <<= TIME_T_BITS_IN_FILE - 1;
684 --max_time;
685 }
686 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
687 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
688 min_year_representable = min_year;
689 max_year_representable = max_year;
690 }
691
692 static int
693 itsdir(name)
694 const char * const name;
695 {
696 register char * myname;
697 register int accres;
698
699 myname = ecpyalloc(name);
700 myname = ecatalloc(myname, "/.");
701 accres = access(myname, F_OK);
702 ifree(myname);
703 return accres == 0;
704 }
705
706 /*
707 ** Associate sets of rules with zones.
708 */
709
710 /*
711 ** Sort by rule name.
712 */
713
714 static int
715 rcomp(cp1, cp2)
716 const void * cp1;
717 const void * cp2;
718 {
719 return strcmp(((const struct rule *) cp1)->r_name,
720 ((const struct rule *) cp2)->r_name);
721 }
722
723 static void
724 associate P((void))
725 {
726 register struct zone * zp;
727 register struct rule * rp;
728 register int base, out;
729 register int i, j;
730
731 if (nrules != 0) {
732 (void) qsort((void *) rules, (size_t) nrules,
733 (size_t) sizeof *rules, rcomp);
734 for (i = 0; i < nrules - 1; ++i) {
735 if (strcmp(rules[i].r_name,
736 rules[i + 1].r_name) != 0)
737 continue;
738 if (strcmp(rules[i].r_filename,
739 rules[i + 1].r_filename) == 0)
740 continue;
741 eat(rules[i].r_filename, rules[i].r_linenum);
742 warning(_("same rule name in multiple files"));
743 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
744 warning(_("same rule name in multiple files"));
745 for (j = i + 2; j < nrules; ++j) {
746 if (strcmp(rules[i].r_name,
747 rules[j].r_name) != 0)
748 break;
749 if (strcmp(rules[i].r_filename,
750 rules[j].r_filename) == 0)
751 continue;
752 if (strcmp(rules[i + 1].r_filename,
753 rules[j].r_filename) == 0)
754 continue;
755 break;
756 }
757 i = j - 1;
758 }
759 }
760 for (i = 0; i < nzones; ++i) {
761 zp = &zones[i];
762 zp->z_rules = NULL;
763 zp->z_nrules = 0;
764 }
765 for (base = 0; base < nrules; base = out) {
766 rp = &rules[base];
767 for (out = base + 1; out < nrules; ++out)
768 if (strcmp(rp->r_name, rules[out].r_name) != 0)
769 break;
770 for (i = 0; i < nzones; ++i) {
771 zp = &zones[i];
772 if (strcmp(zp->z_rule, rp->r_name) != 0)
773 continue;
774 zp->z_rules = rp;
775 zp->z_nrules = out - base;
776 }
777 }
778 for (i = 0; i < nzones; ++i) {
779 zp = &zones[i];
780 if (zp->z_nrules == 0) {
781 /*
782 ** Maybe we have a local standard time offset.
783 */
784 eat(zp->z_filename, zp->z_linenum);
785 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
786 TRUE);
787 /*
788 ** Note, though, that if there's no rule,
789 ** a '%s' in the format is a bad thing.
790 */
791 if (strchr(zp->z_format, '%') != 0)
792 error(_("%s in ruleless zone"));
793 }
794 }
795 if (errors)
796 (void) exit(EXIT_FAILURE);
797 }
798
799 static void
800 infile(name)
801 const char * name;
802 {
803 register FILE * fp;
804 register char ** fields;
805 register char * cp;
806 register const struct lookup * lp;
807 register int nfields;
808 register int wantcont;
809 register int num;
810 char buf[BUFSIZ];
811
812 if (strcmp(name, "-") == 0) {
813 name = _("standard input");
814 fp = stdin;
815 } else if ((fp = fopen(name, "r")) == NULL) {
816 const char *e = strerror(errno);
817
818 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
819 progname, name, e);
820 (void) exit(EXIT_FAILURE);
821 }
822 wantcont = FALSE;
823 for (num = 1; ; ++num) {
824 eat(name, num);
825 if (fgets(buf, (int) sizeof buf, fp) != buf)
826 break;
827 cp = strchr(buf, '\n');
828 if (cp == NULL) {
829 error(_("line too long"));
830 (void) exit(EXIT_FAILURE);
831 }
832 *cp = '\0';
833 fields = getfields(buf);
834 nfields = 0;
835 while (fields[nfields] != NULL) {
836 static char nada;
837
838 if (strcmp(fields[nfields], "-") == 0)
839 fields[nfields] = &nada;
840 ++nfields;
841 }
842 if (nfields == 0) {
843 /* nothing to do */
844 } else if (wantcont) {
845 wantcont = inzcont(fields, nfields);
846 } else {
847 lp = byword(fields[0], line_codes);
848 if (lp == NULL)
849 error(_("input line of unknown type"));
850 else switch ((int) (lp->l_value)) {
851 case LC_RULE:
852 inrule(fields, nfields);
853 wantcont = FALSE;
854 break;
855 case LC_ZONE:
856 wantcont = inzone(fields, nfields);
857 break;
858 case LC_LINK:
859 inlink(fields, nfields);
860 wantcont = FALSE;
861 break;
862 case LC_LEAP:
863 if (name != leapsec)
864 (void) fprintf(stderr,
865 _("%s: Leap line in non leap seconds file %s\n"),
866 progname, name);
867 else inleap(fields, nfields);
868 wantcont = FALSE;
869 break;
870 default: /* "cannot happen" */
871 (void) fprintf(stderr,
872 _("%s: panic: Invalid l_value %d\n"),
873 progname, lp->l_value);
874 (void) exit(EXIT_FAILURE);
875 }
876 }
877 ifree((char *) fields);
878 }
879 if (ferror(fp)) {
880 (void) fprintf(stderr, _("%s: Error reading %s\n"),
881 progname, filename);
882 (void) exit(EXIT_FAILURE);
883 }
884 if (fp != stdin && fclose(fp)) {
885 const char *e = strerror(errno);
886
887 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
888 progname, filename, e);
889 (void) exit(EXIT_FAILURE);
890 }
891 if (wantcont)
892 error(_("expected continuation line not found"));
893 }
894
895 /*
896 ** Convert a string of one of the forms
897 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
898 ** into a number of seconds.
899 ** A null string maps to zero.
900 ** Call error with errstring and return zero on errors.
901 */
902
903 static long
904 gethms(string, errstring, signable)
905 const char * string;
906 const char * const errstring;
907 const int signable;
908 {
909 int hh, mm, ss, sign;
910
911 if (string == NULL || *string == '\0')
912 return 0;
913 if (!signable)
914 sign = 1;
915 else if (*string == '-') {
916 sign = -1;
917 ++string;
918 } else sign = 1;
919 if (sscanf(string, scheck(string, "%d"), &hh) == 1)
920 mm = ss = 0;
921 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
922 ss = 0;
923 else if (sscanf(string, scheck(string, "%d:%d:%d"),
924 &hh, &mm, &ss) != 3) {
925 error(errstring);
926 return 0;
927 }
928 if ((hh < 0 || hh >= HOURSPERDAY ||
929 mm < 0 || mm >= MINSPERHOUR ||
930 ss < 0 || ss > SECSPERMIN) &&
931 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) {
932 error(errstring);
933 return 0;
934 }
935 return eitol(sign) *
936 (eitol(hh * MINSPERHOUR + mm) *
937 eitol(SECSPERMIN) + eitol(ss));
938 }
939
940 static void
941 inrule(fields, nfields)
942 register char ** const fields;
943 const int nfields;
944 {
945 static struct rule r;
946
947 if (nfields != RULE_FIELDS) {
948 error(_("wrong number of fields on Rule line"));
949 return;
950 }
951 if (*fields[RF_NAME] == '\0') {
952 error(_("nameless rule"));
953 return;
954 }
955 r.r_filename = filename;
956 r.r_linenum = linenum;
957 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
958 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
959 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
960 r.r_name = ecpyalloc(fields[RF_NAME]);
961 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
962 rules = (struct rule *) (void *) erealloc((char *) rules,
963 (int) ((nrules + 1) * sizeof *rules));
964 rules[nrules++] = r;
965 }
966
967 static int
968 inzone(fields, nfields)
969 register char ** const fields;
970 const int nfields;
971 {
972 register int i;
973 static char * buf;
974
975 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
976 error(_("wrong number of fields on Zone line"));
977 return FALSE;
978 }
979 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
980 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
981 (void) sprintf(buf,
982 _("\"Zone %s\" line and -l option are mutually exclusive"),
983 TZDEFAULT);
984 error(buf);
985 return FALSE;
986 }
987 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
988 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
989 (void) sprintf(buf,
990 _("\"Zone %s\" line and -p option are mutually exclusive"),
991 TZDEFRULES);
992 error(buf);
993 return FALSE;
994 }
995 for (i = 0; i < nzones; ++i)
996 if (zones[i].z_name != NULL &&
997 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
998 buf = erealloc(buf, (int) (132 +
999 strlen(fields[ZF_NAME]) +
1000 strlen(zones[i].z_filename)));
1001 (void) sprintf(buf,
1002 _("duplicate zone name %s (file \"%s\", line %d)"),
1003 fields[ZF_NAME],
1004 zones[i].z_filename,
1005 zones[i].z_linenum);
1006 error(buf);
1007 return FALSE;
1008 }
1009 return inzsub(fields, nfields, FALSE);
1010 }
1011
1012 static int
1013 inzcont(fields, nfields)
1014 register char ** const fields;
1015 const int nfields;
1016 {
1017 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
1018 error(_("wrong number of fields on Zone continuation line"));
1019 return FALSE;
1020 }
1021 return inzsub(fields, nfields, TRUE);
1022 }
1023
1024 static int
1025 inzsub(fields, nfields, iscont)
1026 register char ** const fields;
1027 const int nfields;
1028 const int iscont;
1029 {
1030 register char * cp;
1031 static struct zone z;
1032 register int i_gmtoff, i_rule, i_format;
1033 register int i_untilyear, i_untilmonth;
1034 register int i_untilday, i_untiltime;
1035 register int hasuntil;
1036
1037 if (iscont) {
1038 i_gmtoff = ZFC_GMTOFF;
1039 i_rule = ZFC_RULE;
1040 i_format = ZFC_FORMAT;
1041 i_untilyear = ZFC_TILYEAR;
1042 i_untilmonth = ZFC_TILMONTH;
1043 i_untilday = ZFC_TILDAY;
1044 i_untiltime = ZFC_TILTIME;
1045 z.z_name = NULL;
1046 } else {
1047 i_gmtoff = ZF_GMTOFF;
1048 i_rule = ZF_RULE;
1049 i_format = ZF_FORMAT;
1050 i_untilyear = ZF_TILYEAR;
1051 i_untilmonth = ZF_TILMONTH;
1052 i_untilday = ZF_TILDAY;
1053 i_untiltime = ZF_TILTIME;
1054 z.z_name = ecpyalloc(fields[ZF_NAME]);
1055 }
1056 z.z_filename = filename;
1057 z.z_linenum = linenum;
1058 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
1059 if ((cp = strchr(fields[i_format], '%')) != 0) {
1060 if (*++cp != 's' || strchr(cp, '%') != 0) {
1061 error(_("invalid abbreviation format"));
1062 return FALSE;
1063 }
1064 }
1065 z.z_rule = ecpyalloc(fields[i_rule]);
1066 z.z_format = ecpyalloc(fields[i_format]);
1067 hasuntil = nfields > i_untilyear;
1068 if (hasuntil) {
1069 z.z_untilrule.r_filename = filename;
1070 z.z_untilrule.r_linenum = linenum;
1071 rulesub(&z.z_untilrule,
1072 fields[i_untilyear],
1073 "only",
1074 "",
1075 (nfields > i_untilmonth) ?
1076 fields[i_untilmonth] : "Jan",
1077 (nfields > i_untilday) ? fields[i_untilday] : "1",
1078 (nfields > i_untiltime) ? fields[i_untiltime] : "0");
1079 z.z_untiltime = rpytime(&z.z_untilrule,
1080 z.z_untilrule.r_loyear);
1081 if (iscont && nzones > 0 &&
1082 z.z_untiltime > min_time &&
1083 z.z_untiltime < max_time &&
1084 zones[nzones - 1].z_untiltime > min_time &&
1085 zones[nzones - 1].z_untiltime < max_time &&
1086 zones[nzones - 1].z_untiltime >= z.z_untiltime) {
1087 error(_("Zone continuation line end time is not after end time of previous line"));
1088 return FALSE;
1089 }
1090 }
1091 zones = (struct zone *) (void *) erealloc((char *) zones,
1092 (int) ((nzones + 1) * sizeof *zones));
1093 zones[nzones++] = z;
1094 /*
1095 ** If there was an UNTIL field on this line,
1096 ** there's more information about the zone on the next line.
1097 */
1098 return hasuntil;
1099 }
1100
1101 static void
1102 inleap(fields, nfields)
1103 register char ** const fields;
1104 const int nfields;
1105 {
1106 register const char * cp;
1107 register const struct lookup * lp;
1108 register int i, j;
1109 int year, month, day;
1110 long dayoff, tod;
1111 time_t t;
1112
1113 if (nfields != LEAP_FIELDS) {
1114 error(_("wrong number of fields on Leap line"));
1115 return;
1116 }
1117 dayoff = 0;
1118 cp = fields[LP_YEAR];
1119 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
1120 /*
1121 * Leapin' Lizards!
1122 */
1123 error(_("invalid leaping year"));
1124 return;
1125 }
1126 j = EPOCH_YEAR;
1127 while (j != year) {
1128 if (year > j) {
1129 i = len_years[isleap(j)];
1130 ++j;
1131 } else {
1132 --j;
1133 i = -len_years[isleap(j)];
1134 }
1135 dayoff = oadd(dayoff, eitol(i));
1136 }
1137 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
1138 error(_("invalid month name"));
1139 return;
1140 }
1141 month = lp->l_value;
1142 j = TM_JANUARY;
1143 while (j != month) {
1144 i = len_months[isleap(year)][j];
1145 dayoff = oadd(dayoff, eitol(i));
1146 ++j;
1147 }
1148 cp = fields[LP_DAY];
1149 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
1150 day <= 0 || day > len_months[isleap(year)][month]) {
1151 error(_("invalid day of month"));
1152 return;
1153 }
1154 dayoff = oadd(dayoff, eitol(day - 1));
1155 if (dayoff < 0 && !TYPE_SIGNED(time_t)) {
1156 error(_("time before zero"));
1157 return;
1158 }
1159 t = (time_t) dayoff * SECSPERDAY;
1160 /*
1161 ** Cheap overflow check.
1162 */
1163 if (t / SECSPERDAY != dayoff) {
1164 error(_("time overflow"));
1165 return;
1166 }
1167 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
1168 cp = fields[LP_CORR];
1169 {
1170 register int positive;
1171 int count;
1172
1173 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
1174 positive = FALSE;
1175 count = 1;
1176 } else if (strcmp(cp, "--") == 0) {
1177 positive = FALSE;
1178 count = 2;
1179 } else if (strcmp(cp, "+") == 0) {
1180 positive = TRUE;
1181 count = 1;
1182 } else if (strcmp(cp, "++") == 0) {
1183 positive = TRUE;
1184 count = 2;
1185 } else {
1186 error(_("illegal CORRECTION field on Leap line"));
1187 return;
1188 }
1189 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
1190 error(_("illegal Rolling/Stationary field on Leap line"));
1191 return;
1192 }
1193 leapadd(tadd(t, tod), positive, lp->l_value, count);
1194 }
1195 }
1196
1197 static void
1198 inlink(fields, nfields)
1199 register char ** const fields;
1200 const int nfields;
1201 {
1202 struct link l;
1203
1204 if (nfields != LINK_FIELDS) {
1205 error(_("wrong number of fields on Link line"));
1206 return;
1207 }
1208 if (*fields[LF_FROM] == '\0') {
1209 error(_("blank FROM field on Link line"));
1210 return;
1211 }
1212 if (*fields[LF_TO] == '\0') {
1213 error(_("blank TO field on Link line"));
1214 return;
1215 }
1216 l.l_filename = filename;
1217 l.l_linenum = linenum;
1218 l.l_from = ecpyalloc(fields[LF_FROM]);
1219 l.l_to = ecpyalloc(fields[LF_TO]);
1220 links = (struct link *) (void *) erealloc((char *) links,
1221 (int) ((nlinks + 1) * sizeof *links));
1222 links[nlinks++] = l;
1223 }
1224
1225 static void
1226 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
1227 register struct rule * const rp;
1228 const char * const loyearp;
1229 const char * const hiyearp;
1230 const char * const typep;
1231 const char * const monthp;
1232 const char * const dayp;
1233 const char * const timep;
1234 {
1235 register const struct lookup * lp;
1236 register const char * cp;
1237 register char * dp;
1238 register char * ep;
1239
1240 if ((lp = byword(monthp, mon_names)) == NULL) {
1241 error(_("invalid month name"));
1242 return;
1243 }
1244 rp->r_month = lp->l_value;
1245 rp->r_todisstd = FALSE;
1246 rp->r_todisgmt = FALSE;
1247 dp = ecpyalloc(timep);
1248 if (*dp != '\0') {
1249 ep = dp + strlen(dp) - 1;
1250 switch (lowerit(*ep)) {
1251 case 's': /* Standard */
1252 rp->r_todisstd = TRUE;
1253 rp->r_todisgmt = FALSE;
1254 *ep = '\0';
1255 break;
1256 case 'w': /* Wall */
1257 rp->r_todisstd = FALSE;
1258 rp->r_todisgmt = FALSE;
1259 *ep = '\0';
1260 break;
1261 case 'g': /* Greenwich */
1262 case 'u': /* Universal */
1263 case 'z': /* Zulu */
1264 rp->r_todisstd = TRUE;
1265 rp->r_todisgmt = TRUE;
1266 *ep = '\0';
1267 break;
1268 }
1269 }
1270 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
1271 ifree(dp);
1272 /*
1273 ** Year work.
1274 */
1275 cp = loyearp;
1276 lp = byword(cp, begin_years);
1277 if (lp != NULL) switch ((int) lp->l_value) {
1278 case YR_MINIMUM:
1279 rp->r_loyear = INT_MIN;
1280 break;
1281 case YR_MAXIMUM:
1282 rp->r_loyear = INT_MAX;
1283 break;
1284 default: /* "cannot happen" */
1285 (void) fprintf(stderr,
1286 _("%s: panic: Invalid l_value %d\n"),
1287 progname, lp->l_value);
1288 (void) exit(EXIT_FAILURE);
1289 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
1290 error(_("invalid starting year"));
1291 return;
1292 } else if (noise) {
1293 if (rp->r_loyear < min_year_representable)
1294 warning(_("starting year too low to be represented"));
1295 else if (rp->r_loyear > max_year_representable)
1296 warning(_("starting year too high to be represented"));
1297 }
1298 cp = hiyearp;
1299 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
1300 case YR_MINIMUM:
1301 rp->r_hiyear = INT_MIN;
1302 break;
1303 case YR_MAXIMUM:
1304 rp->r_hiyear = INT_MAX;
1305 break;
1306 case YR_ONLY:
1307 rp->r_hiyear = rp->r_loyear;
1308 break;
1309 default: /* "cannot happen" */
1310 (void) fprintf(stderr,
1311 _("%s: panic: Invalid l_value %d\n"),
1312 progname, lp->l_value);
1313 (void) exit(EXIT_FAILURE);
1314 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
1315 error(_("invalid ending year"));
1316 return;
1317 } else if (noise) {
1318 if (rp->r_loyear < min_year_representable)
1319 warning(_("starting year too low to be represented"));
1320 else if (rp->r_loyear > max_year_representable)
1321 warning(_("starting year too high to be represented"));
1322 }
1323 if (rp->r_loyear > rp->r_hiyear) {
1324 error(_("starting year greater than ending year"));
1325 return;
1326 }
1327 if (*typep == '\0')
1328 rp->r_yrtype = NULL;
1329 else {
1330 if (rp->r_loyear == rp->r_hiyear) {
1331 error(_("typed single year"));
1332 return;
1333 }
1334 rp->r_yrtype = ecpyalloc(typep);
1335 }
1336 if (rp->r_loyear < min_year && rp->r_loyear > 0)
1337 min_year = rp->r_loyear;
1338 /*
1339 ** Day work.
1340 ** Accept things such as:
1341 ** 1
1342 ** last-Sunday
1343 ** Sun<=20
1344 ** Sun>=7
1345 */
1346 dp = ecpyalloc(dayp);
1347 if ((lp = byword(dp, lasts)) != NULL) {
1348 rp->r_dycode = DC_DOWLEQ;
1349 rp->r_wday = lp->l_value;
1350 rp->r_dayofmonth = len_months[1][rp->r_month];
1351 } else {
1352 if ((ep = strchr(dp, '<')) != 0)
1353 rp->r_dycode = DC_DOWLEQ;
1354 else if ((ep = strchr(dp, '>')) != 0)
1355 rp->r_dycode = DC_DOWGEQ;
1356 else {
1357 ep = dp;
1358 rp->r_dycode = DC_DOM;
1359 }
1360 if (rp->r_dycode != DC_DOM) {
1361 *ep++ = 0;
1362 if (*ep++ != '=') {
1363 error(_("invalid day of month"));
1364 ifree(dp);
1365 return;
1366 }
1367 if ((lp = byword(dp, wday_names)) == NULL) {
1368 error(_("invalid weekday name"));
1369 ifree(dp);
1370 return;
1371 }
1372 rp->r_wday = lp->l_value;
1373 }
1374 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
1375 rp->r_dayofmonth <= 0 ||
1376 (rp->r_dayofmonth > len_months[1][rp->r_month])) {
1377 error(_("invalid day of month"));
1378 ifree(dp);
1379 return;
1380 }
1381 }
1382 ifree(dp);
1383 }
1384
1385 static void
1386 convert(val, buf)
1387 const long val;
1388 char * const buf;
1389 {
1390 register int i;
1391 register long shift;
1392
1393 for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
1394 buf[i] = val >> shift;
1395 }
1396
1397 static void
1398 puttzcode(val, fp)
1399 const long val;
1400 FILE * const fp;
1401 {
1402 char buf[4];
1403
1404 convert(val, buf);
1405 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
1406 }
1407
1408 static int
1409 atcomp(avp, bvp)
1410 void * avp;
1411 void * bvp;
1412 {
1413 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at)
1414 return -1;
1415 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at)
1416 return 1;
1417 else return 0;
1418 }
1419
1420 static void
1421 writezone(name)
1422 const char * const name;
1423 {
1424 register FILE * fp;
1425 register int i, j;
1426 static char * fullname;
1427 static struct tzhead tzh;
1428 time_t ats[TZ_MAX_TIMES];
1429 unsigned char types[TZ_MAX_TIMES];
1430
1431 /*
1432 ** Sort.
1433 */
1434 if (timecnt > 1)
1435 (void) qsort((void *) attypes, (size_t) timecnt,
1436 (size_t) sizeof *attypes, atcomp);
1437 /*
1438 ** Optimize.
1439 */
1440 {
1441 int fromi;
1442 int toi;
1443
1444 toi = 0;
1445 fromi = 0;
1446 while (fromi < timecnt && attypes[fromi].at < min_time)
1447 ++fromi;
1448 if (isdsts[0] == 0)
1449 while (fromi < timecnt && attypes[fromi].type == 0)
1450 ++fromi; /* handled by default rule */
1451 for ( ; fromi < timecnt; ++fromi) {
1452 if (toi != 0
1453 && ((attypes[fromi].at
1454 + gmtoffs[attypes[toi - 1].type])
1455 <= (attypes[toi - 1].at
1456 + gmtoffs[toi == 1 ? 0
1457 : attypes[toi - 2].type]))) {
1458 attypes[toi - 1].type = attypes[fromi].type;
1459 continue;
1460 }
1461 if (toi == 0 ||
1462 attypes[toi - 1].type != attypes[fromi].type)
1463 attypes[toi++] = attypes[fromi];
1464 }
1465 timecnt = toi;
1466 }
1467 /*
1468 ** Transfer.
1469 */
1470 for (i = 0; i < timecnt; ++i) {
1471 ats[i] = attypes[i].at;
1472 types[i] = attypes[i].type;
1473 }
1474 fullname = erealloc(fullname,
1475 (int) (strlen(directory) + 1 + strlen(name) + 1));
1476 (void) sprintf(fullname, "%s/%s", directory, name);
1477 /*
1478 ** Remove old file, if any, to snap links.
1479 */
1480 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
1481 const char *e = strerror(errno);
1482
1483 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
1484 progname, fullname, e);
1485 (void) exit(EXIT_FAILURE);
1486 }
1487 if ((fp = fopen(fullname, "wb")) == NULL) {
1488 if (mkdirs(fullname) != 0)
1489 (void) exit(EXIT_FAILURE);
1490 if ((fp = fopen(fullname, "wb")) == NULL) {
1491 const char *e = strerror(errno);
1492
1493 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
1494 progname, fullname, e);
1495 (void) exit(EXIT_FAILURE);
1496 }
1497 }
1498 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt);
1499 convert(eitol(typecnt), tzh.tzh_ttisstdcnt);
1500 convert(eitol(leapcnt), tzh.tzh_leapcnt);
1501 convert(eitol(timecnt), tzh.tzh_timecnt);
1502 convert(eitol(typecnt), tzh.tzh_typecnt);
1503 convert(eitol(charcnt), tzh.tzh_charcnt);
1504 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
1505 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp)
1506 DO(tzh_magic);
1507 DO(tzh_reserved);
1508 DO(tzh_ttisgmtcnt);
1509 DO(tzh_ttisstdcnt);
1510 DO(tzh_leapcnt);
1511 DO(tzh_timecnt);
1512 DO(tzh_typecnt);
1513 DO(tzh_charcnt);
1514 #undef DO
1515 for (i = 0; i < timecnt; ++i) {
1516 j = leapcnt;
1517 while (--j >= 0)
1518 if (ats[i] >= trans[j]) {
1519 ats[i] = tadd(ats[i], corr[j]);
1520 break;
1521 }
1522 puttzcode((long) ats[i], fp);
1523 }
1524 if (timecnt > 0)
1525 (void) fwrite((void *) types, (size_t) sizeof types[0],
1526 (size_t) timecnt, fp);
1527 for (i = 0; i < typecnt; ++i) {
1528 puttzcode((long) gmtoffs[i], fp);
1529 (void) putc(isdsts[i], fp);
1530 (void) putc(abbrinds[i], fp);
1531 }
1532 if (charcnt != 0)
1533 (void) fwrite((void *) chars, (size_t) sizeof chars[0],
1534 (size_t) charcnt, fp);
1535 for (i = 0; i < leapcnt; ++i) {
1536 if (roll[i]) {
1537 if (timecnt == 0 || trans[i] < ats[0]) {
1538 j = 0;
1539 while (isdsts[j])
1540 if (++j >= typecnt) {
1541 j = 0;
1542 break;
1543 }
1544 } else {
1545 j = 1;
1546 while (j < timecnt && trans[i] >= ats[j])
1547 ++j;
1548 j = types[j - 1];
1549 }
1550 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
1551 } else puttzcode((long) trans[i], fp);
1552 puttzcode((long) corr[i], fp);
1553 }
1554 for (i = 0; i < typecnt; ++i)
1555 (void) putc(ttisstds[i], fp);
1556 for (i = 0; i < typecnt; ++i)
1557 (void) putc(ttisgmts[i], fp);
1558 if (ferror(fp) || fclose(fp)) {
1559 (void) fprintf(stderr, _("%s: Error writing %s\n"),
1560 progname, fullname);
1561 (void) exit(EXIT_FAILURE);
1562 }
1563 }
1564
1565 static void
1566 doabbr(abbr, format, letters, isdst)
1567 char * const abbr;
1568 const char * const format;
1569 const char * const letters;
1570 const int isdst;
1571 {
1572 if (strchr(format, '/') == NULL) {
1573 if (letters == NULL)
1574 (void) strcpy(abbr, format);
1575 else (void) sprintf(abbr, format, letters);
1576 } else if (isdst)
1577 (void) strcpy(abbr, strchr(format, '/') + 1);
1578 else {
1579 (void) strcpy(abbr, format);
1580 *strchr(abbr, '/') = '\0';
1581 }
1582 }
1583
1584 static void
1585 outzone(zpfirst, zonecount)
1586 const struct zone * const zpfirst;
1587 const int zonecount;
1588 {
1589 register const struct zone * zp;
1590 register struct rule * rp;
1591 register int i, j;
1592 register int usestart, useuntil;
1593 register time_t starttime, untiltime;
1594 register long gmtoff;
1595 register long stdoff;
1596 register int year;
1597 register long startoff;
1598 register int startttisstd;
1599 register int startttisgmt;
1600 register int type;
1601 char startbuf[BUFSIZ];
1602
1603 INITIALIZE(untiltime);
1604 INITIALIZE(starttime);
1605 /*
1606 ** Now. . .finally. . .generate some useful data!
1607 */
1608 timecnt = 0;
1609 typecnt = 0;
1610 charcnt = 0;
1611 /*
1612 ** A guess that may well be corrected later.
1613 */
1614 stdoff = 0;
1615 /*
1616 ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
1617 ** for noting the need to unconditionally initialize startttisstd.
1618 */
1619 startttisstd = FALSE;
1620 startttisgmt = FALSE;
1621 for (i = 0; i < zonecount; ++i) {
1622 zp = &zpfirst[i];
1623 usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
1624 useuntil = i < (zonecount - 1);
1625 if (useuntil && zp->z_untiltime <= min_time)
1626 continue;
1627 gmtoff = zp->z_gmtoff;
1628 eat(zp->z_filename, zp->z_linenum);
1629 *startbuf = '\0';
1630 startoff = zp->z_gmtoff;
1631 if (zp->z_nrules == 0) {
1632 stdoff = zp->z_stdoff;
1633 doabbr(startbuf, zp->z_format,
1634 (char *) NULL, stdoff != 0);
1635 type = addtype(oadd(zp->z_gmtoff, stdoff),
1636 startbuf, stdoff != 0, startttisstd,
1637 startttisgmt);
1638 if (usestart) {
1639 addtt(starttime, type);
1640 usestart = FALSE;
1641 }
1642 else if (stdoff != 0)
1643 addtt(min_time, type);
1644 } else for (year = min_year; year <= max_year; ++year) {
1645 if (useuntil && year > zp->z_untilrule.r_hiyear)
1646 break;
1647 /*
1648 ** Mark which rules to do in the current year.
1649 ** For those to do, calculate rpytime(rp, year);
1650 */
1651 for (j = 0; j < zp->z_nrules; ++j) {
1652 rp = &zp->z_rules[j];
1653 eats(zp->z_filename, zp->z_linenum,
1654 rp->r_filename, rp->r_linenum);
1655 rp->r_todo = year >= rp->r_loyear &&
1656 year <= rp->r_hiyear &&
1657 yearistype(year, rp->r_yrtype);
1658 if (rp->r_todo)
1659 rp->r_temp = rpytime(rp, year);
1660 }
1661 for ( ; ; ) {
1662 register int k;
1663 register time_t jtime, ktime;
1664 register long offset;
1665 char buf[BUFSIZ];
1666
1667 INITIALIZE(ktime);
1668 if (useuntil) {
1669 /*
1670 ** Turn untiltime into UTC
1671 ** assuming the current gmtoff and
1672 ** stdoff values.
1673 */
1674 untiltime = zp->z_untiltime;
1675 if (!zp->z_untilrule.r_todisgmt)
1676 untiltime = tadd(untiltime,
1677 -gmtoff);
1678 if (!zp->z_untilrule.r_todisstd)
1679 untiltime = tadd(untiltime,
1680 -stdoff);
1681 }
1682 /*
1683 ** Find the rule (of those to do, if any)
1684 ** that takes effect earliest in the year.
1685 */
1686 k = -1;
1687 for (j = 0; j < zp->z_nrules; ++j) {
1688 rp = &zp->z_rules[j];
1689 if (!rp->r_todo)
1690 continue;
1691 eats(zp->z_filename, zp->z_linenum,
1692 rp->r_filename, rp->r_linenum);
1693 offset = rp->r_todisgmt ? 0 : gmtoff;
1694 if (!rp->r_todisstd)
1695 offset = oadd(offset, stdoff);
1696 jtime = rp->r_temp;
1697 if (jtime == min_time ||
1698 jtime == max_time)
1699 continue;
1700 jtime = tadd(jtime, -offset);
1701 if (k < 0 || jtime < ktime) {
1702 k = j;
1703 ktime = jtime;
1704 }
1705 }
1706 if (k < 0)
1707 break; /* go on to next year */
1708 rp = &zp->z_rules[k];
1709 rp->r_todo = FALSE;
1710 if (useuntil && ktime >= untiltime)
1711 break;
1712 stdoff = rp->r_stdoff;
1713 if (usestart && ktime == starttime)
1714 usestart = FALSE;
1715 if (usestart) {
1716 if (ktime < starttime) {
1717 startoff = oadd(zp->z_gmtoff,
1718 stdoff);
1719 doabbr(startbuf, zp->z_format,
1720 rp->r_abbrvar,
1721 rp->r_stdoff != 0);
1722 continue;
1723 }
1724 if (*startbuf == '\0' &&
1725 startoff == oadd(zp->z_gmtoff,
1726 stdoff)) {
1727 doabbr(startbuf, zp->z_format,
1728 rp->r_abbrvar,
1729 rp->r_stdoff != 0);
1730 }
1731 }
1732 eats(zp->z_filename, zp->z_linenum,
1733 rp->r_filename, rp->r_linenum);
1734 doabbr(buf, zp->z_format, rp->r_abbrvar,
1735 rp->r_stdoff != 0);
1736 offset = oadd(zp->z_gmtoff, rp->r_stdoff);
1737 type = addtype(offset, buf, rp->r_stdoff != 0,
1738 rp->r_todisstd, rp->r_todisgmt);
1739 addtt(ktime, type);
1740 }
1741 }
1742 if (usestart) {
1743 if (*startbuf == '\0' &&
1744 zp->z_format != NULL &&
1745 strchr(zp->z_format, '%') == NULL &&
1746 strchr(zp->z_format, '/') == NULL)
1747 (void) strcpy(startbuf, zp->z_format);
1748 eat(zp->z_filename, zp->z_linenum);
1749 if (*startbuf == '\0')
1750 error(_("can't determine time zone abbreviation to use just after until time"));
1751 else addtt(starttime,
1752 addtype(startoff, startbuf,
1753 startoff != zp->z_gmtoff,
1754 startttisstd,
1755 startttisgmt));
1756 }
1757 /*
1758 ** Now we may get to set starttime for the next zone line.
1759 */
1760 if (useuntil) {
1761 startttisstd = zp->z_untilrule.r_todisstd;
1762 startttisgmt = zp->z_untilrule.r_todisgmt;
1763 starttime = zp->z_untiltime;
1764 if (!startttisstd)
1765 starttime = tadd(starttime, -stdoff);
1766 if (!startttisgmt)
1767 starttime = tadd(starttime, -gmtoff);
1768 }
1769 }
1770 writezone(zpfirst->z_name);
1771 }
1772
1773 static void
1774 addtt(starttime, type)
1775 const time_t starttime;
1776 int type;
1777 {
1778 if (starttime <= min_time ||
1779 (timecnt == 1 && attypes[0].at < min_time)) {
1780 gmtoffs[0] = gmtoffs[type];
1781 isdsts[0] = isdsts[type];
1782 ttisstds[0] = ttisstds[type];
1783 ttisgmts[0] = ttisgmts[type];
1784 if (abbrinds[type] != 0)
1785 (void) strcpy(chars, &chars[abbrinds[type]]);
1786 abbrinds[0] = 0;
1787 charcnt = strlen(chars) + 1;
1788 typecnt = 1;
1789 timecnt = 0;
1790 type = 0;
1791 }
1792 if (timecnt >= TZ_MAX_TIMES) {
1793 error(_("too many transitions?!"));
1794 (void) exit(EXIT_FAILURE);
1795 }
1796 attypes[timecnt].at = starttime;
1797 attypes[timecnt].type = type;
1798 ++timecnt;
1799 }
1800
1801 static int
1802 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)
1803 const long gmtoff;
1804 const char * const abbr;
1805 const int isdst;
1806 const int ttisstd;
1807 const int ttisgmt;
1808 {
1809 register int i, j;
1810
1811 if (isdst != TRUE && isdst != FALSE) {
1812 error(_("internal error - addtype called with bad isdst"));
1813 (void) exit(EXIT_FAILURE);
1814 }
1815 if (ttisstd != TRUE && ttisstd != FALSE) {
1816 error(_("internal error - addtype called with bad ttisstd"));
1817 (void) exit(EXIT_FAILURE);
1818 }
1819 if (ttisgmt != TRUE && ttisgmt != FALSE) {
1820 error(_("internal error - addtype called with bad ttisgmt"));
1821 (void) exit(EXIT_FAILURE);
1822 }
1823 /*
1824 ** See if there's already an entry for this zone type.
1825 ** If so, just return its index.
1826 */
1827 for (i = 0; i < typecnt; ++i) {
1828 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
1829 strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
1830 ttisstd == ttisstds[i] &&
1831 ttisgmt == ttisgmts[i])
1832 return i;
1833 }
1834 /*
1835 ** There isn't one; add a new one, unless there are already too
1836 ** many.
1837 */
1838 if (typecnt >= TZ_MAX_TYPES) {
1839 error(_("too many local time types"));
1840 (void) exit(EXIT_FAILURE);
1841 }
1842 gmtoffs[i] = gmtoff;
1843 isdsts[i] = isdst;
1844 ttisstds[i] = ttisstd;
1845 ttisgmts[i] = ttisgmt;
1846
1847 for (j = 0; j < charcnt; ++j)
1848 if (strcmp(&chars[j], abbr) == 0)
1849 break;
1850 if (j == charcnt)
1851 newabbr(abbr);
1852 abbrinds[i] = j;
1853 ++typecnt;
1854 return i;
1855 }
1856
1857 static void
1858 leapadd(t, positive, rolling, count)
1859 const time_t t;
1860 const int positive;
1861 const int rolling;
1862 int count;
1863 {
1864 register int i, j;
1865
1866 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
1867 error(_("too many leap seconds"));
1868 (void) exit(EXIT_FAILURE);
1869 }
1870 for (i = 0; i < leapcnt; ++i)
1871 if (t <= trans[i]) {
1872 if (t == trans[i]) {
1873 error(_("repeated leap second moment"));
1874 (void) exit(EXIT_FAILURE);
1875 }
1876 break;
1877 }
1878 do {
1879 for (j = leapcnt; j > i; --j) {
1880 trans[j] = trans[j - 1];
1881 corr[j] = corr[j - 1];
1882 roll[j] = roll[j - 1];
1883 }
1884 trans[i] = t;
1885 corr[i] = positive ? 1L : eitol(-count);
1886 roll[i] = rolling;
1887 ++leapcnt;
1888 } while (positive && --count != 0);
1889 }
1890
1891 static void
1892 adjleap P((void))
1893 {
1894 register int i;
1895 register long last = 0;
1896
1897 /*
1898 ** propagate leap seconds forward
1899 */
1900 for (i = 0; i < leapcnt; ++i) {
1901 trans[i] = tadd(trans[i], last);
1902 last = corr[i] += last;
1903 }
1904 }
1905
1906 static int
1907 yearistype(year, type)
1908 const int year;
1909 const char * const type;
1910 {
1911 static char * buf;
1912 int result;
1913
1914 if (type == NULL || *type == '\0')
1915 return TRUE;
1916 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
1917 (void) sprintf(buf, "%s %d %s", yitcommand, year, type);
1918 result = system(buf);
1919 if (result == 0)
1920 return TRUE;
1921 if (result == (1 << 8))
1922 return FALSE;
1923 error(_("Wild result from command execution"));
1924 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
1925 progname, buf, result);
1926 for ( ; ; )
1927 (void) exit(EXIT_FAILURE);
1928 }
1929
1930 static int
1931 lowerit(a)
1932 int a;
1933 {
1934 a = (unsigned char) a;
1935 return (isascii(a) && isupper(a)) ? tolower(a) : a;
1936 }
1937
1938 static int
1939 ciequal(ap, bp) /* case-insensitive equality */
1940 register const char * ap;
1941 register const char * bp;
1942 {
1943 while (lowerit(*ap) == lowerit(*bp++))
1944 if (*ap++ == '\0')
1945 return TRUE;
1946 return FALSE;
1947 }
1948
1949 static int
1950 itsabbr(abbr, word)
1951 register const char * abbr;
1952 register const char * word;
1953 {
1954 if (lowerit(*abbr) != lowerit(*word))
1955 return FALSE;
1956 ++word;
1957 while (*++abbr != '\0')
1958 do {
1959 if (*word == '\0')
1960 return FALSE;
1961 } while (lowerit(*word++) != lowerit(*abbr));
1962 return TRUE;
1963 }
1964
1965 static const struct lookup *
1966 byword(word, table)
1967 register const char * const word;
1968 register const struct lookup * const table;
1969 {
1970 register const struct lookup * foundlp;
1971 register const struct lookup * lp;
1972
1973 if (word == NULL || table == NULL)
1974 return NULL;
1975 /*
1976 ** Look for exact match.
1977 */
1978 for (lp = table; lp->l_word != NULL; ++lp)
1979 if (ciequal(word, lp->l_word))
1980 return lp;
1981 /*
1982 ** Look for inexact match.
1983 */
1984 foundlp = NULL;
1985 for (lp = table; lp->l_word != NULL; ++lp)
1986 if (itsabbr(word, lp->l_word)) {
1987 if (foundlp == NULL)
1988 foundlp = lp;
1989 else return NULL; /* multiple inexact matches */
1990 }
1991 return foundlp;
1992 }
1993
1994 static char **
1995 getfields(cp)
1996 register char * cp;
1997 {
1998 register char * dp;
1999 register char ** array;
2000 register int nsubs;
2001
2002 if (cp == NULL)
2003 return NULL;
2004 array = (char **) (void *)
2005 emalloc((int) ((strlen(cp) + 1) * sizeof *array));
2006 nsubs = 0;
2007 for ( ; ; ) {
2008 while (isascii(*cp) && isspace((unsigned char) *cp))
2009 ++cp;
2010 if (*cp == '\0' || *cp == '#')
2011 break;
2012 array[nsubs++] = dp = cp;
2013 do {
2014 if ((*dp = *cp++) != '"')
2015 ++dp;
2016 else while ((*dp = *cp++) != '"')
2017 if (*dp != '\0')
2018 ++dp;
2019 else error(_("Odd number of quotation marks"));
2020 } while (*cp != '\0' && *cp != '#' &&
2021 (!isascii(*cp) || !isspace((unsigned char) *cp)));
2022 if (isascii(*cp) && isspace((unsigned char) *cp))
2023 ++cp;
2024 *dp = '\0';
2025 }
2026 array[nsubs] = NULL;
2027 return array;
2028 }
2029
2030 static long
2031 oadd(t1, t2)
2032 const long t1;
2033 const long t2;
2034 {
2035 register long t;
2036
2037 t = t1 + t2;
2038 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2039 error(_("time overflow"));
2040 (void) exit(EXIT_FAILURE);
2041 }
2042 return t;
2043 }
2044
2045 static time_t
2046 tadd(t1, t2)
2047 const time_t t1;
2048 const long t2;
2049 {
2050 register time_t t;
2051
2052 if (t1 == max_time && t2 > 0)
2053 return max_time;
2054 if (t1 == min_time && t2 < 0)
2055 return min_time;
2056 t = t1 + t2;
2057 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2058 error(_("time overflow"));
2059 (void) exit(EXIT_FAILURE);
2060 }
2061 return t;
2062 }
2063
2064 /*
2065 ** Given a rule, and a year, compute the date - in seconds since January 1,
2066 ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
2067 */
2068
2069 static time_t
2070 rpytime(rp, wantedy)
2071 register const struct rule * const rp;
2072 register const int wantedy;
2073 {
2074 register int y, m, i;
2075 register long dayoff; /* with a nod to Margaret O. */
2076 register time_t t;
2077
2078 if (wantedy == INT_MIN)
2079 return min_time;
2080 if (wantedy == INT_MAX)
2081 return max_time;
2082 dayoff = 0;
2083 m = TM_JANUARY;
2084 y = EPOCH_YEAR;
2085 while (wantedy != y) {
2086 if (wantedy > y) {
2087 i = len_years[isleap(y)];
2088 ++y;
2089 } else {
2090 --y;
2091 i = -len_years[isleap(y)];
2092 }
2093 dayoff = oadd(dayoff, eitol(i));
2094 }
2095 while (m != rp->r_month) {
2096 i = len_months[isleap(y)][m];
2097 dayoff = oadd(dayoff, eitol(i));
2098 ++m;
2099 }
2100 i = rp->r_dayofmonth;
2101 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
2102 if (rp->r_dycode == DC_DOWLEQ)
2103 --i;
2104 else {
2105 error(_("use of 2/29 in non leap-year"));
2106 (void) exit(EXIT_FAILURE);
2107 }
2108 }
2109 --i;
2110 dayoff = oadd(dayoff, eitol(i));
2111 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
2112 register long wday;
2113
2114 #define LDAYSPERWEEK ((long) DAYSPERWEEK)
2115 wday = eitol(EPOCH_WDAY);
2116 /*
2117 ** Don't trust mod of negative numbers.
2118 */
2119 if (dayoff >= 0)
2120 wday = (wday + dayoff) % LDAYSPERWEEK;
2121 else {
2122 wday -= ((-dayoff) % LDAYSPERWEEK);
2123 if (wday < 0)
2124 wday += LDAYSPERWEEK;
2125 }
2126 while (wday != eitol(rp->r_wday))
2127 if (rp->r_dycode == DC_DOWGEQ) {
2128 dayoff = oadd(dayoff, (long) 1);
2129 if (++wday >= LDAYSPERWEEK)
2130 wday = 0;
2131 ++i;
2132 } else {
2133 dayoff = oadd(dayoff, (long) -1);
2134 if (--wday < 0)
2135 wday = LDAYSPERWEEK - 1;
2136 --i;
2137 }
2138 if (i < 0 || i >= len_months[isleap(y)][m]) {
2139 error(_("no day in month matches rule"));
2140 (void) exit(EXIT_FAILURE);
2141 }
2142 }
2143 if (dayoff < 0 && !TYPE_SIGNED(time_t))
2144 return min_time;
2145 t = (time_t) dayoff * SECSPERDAY;
2146 /*
2147 ** Cheap overflow check.
2148 */
2149 if (t / SECSPERDAY != dayoff)
2150 return (dayoff > 0) ? max_time : min_time;
2151 return tadd(t, rp->r_tod);
2152 }
2153
2154 static void
2155 newabbr(string)
2156 const char * const string;
2157 {
2158 register int i;
2159
2160 i = strlen(string) + 1;
2161 if (charcnt + i > TZ_MAX_CHARS) {
2162 error(_("too many, or too long, time zone abbreviations"));
2163 (void) exit(EXIT_FAILURE);
2164 }
2165 (void) strcpy(&chars[charcnt], string);
2166 charcnt += eitol(i);
2167 }
2168
2169 static int
2170 mkdirs(argname)
2171 char * const argname;
2172 {
2173 register char * name;
2174 register char * cp;
2175
2176 if (argname == NULL || *argname == '\0')
2177 return 0;
2178 cp = name = ecpyalloc(argname);
2179 while ((cp = strchr(cp + 1, '/')) != 0) {
2180 *cp = '\0';
2181 #ifndef unix
2182 /*
2183 ** DOS drive specifier?
2184 */
2185 if (isalpha((unsigned char) name[0]) &&
2186 name[1] == ':' && name[2] == '\0') {
2187 *cp = '/';
2188 continue;
2189 }
2190 #endif /* !defined unix */
2191 if (!itsdir(name)) {
2192 /*
2193 ** It doesn't seem to exist, so we try to create it.
2194 ** Creation may fail because of the directory being
2195 ** created by some other multiprocessor, so we get
2196 ** to do extra checking.
2197 */
2198 if (mkdir(name, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) {
2199 const char *e = strerror(errno);
2200
2201 if (errno != EEXIST || !itsdir(name)) {
2202 (void) fprintf(stderr,
2203 _("%s: Can't create directory %s: %s\n"),
2204 progname, name, e);
2205 ifree(name);
2206 return -1;
2207 }
2208 }
2209 }
2210 *cp = '/';
2211 }
2212 ifree(name);
2213 return 0;
2214 }
2215
2216 static long
2217 eitol(i)
2218 const int i;
2219 {
2220 long l;
2221
2222 l = i;
2223 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
2224 (void) fprintf(stderr,
2225 _("%s: %d did not sign extend correctly\n"),
2226 progname, i);
2227 (void) exit(EXIT_FAILURE);
2228 }
2229 return l;
2230 }
2231
2232 /*
2233 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
2234 */
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