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1.30 ! christos 1: /* $NetBSD: zic.c,v 1.29 2011/09/04 10:10:26 christos Exp $ */
1.25 mlelstv 2: /*
3: ** This file is in the public domain, so clarified as of
4: ** 2006-07-17 by Arthur David Olson.
5: */
1.2 jtc 6:
1.26 tsutsui 7: #if HAVE_NBTOOL_CONFIG_H
8: #include "nbtool_config.h"
9: #endif
10:
1.9 christos 11: #include <sys/cdefs.h>
1.1 jtc 12: #ifndef lint
1.30 ! christos 13: __RCSID("$NetBSD: zic.c,v 1.29 2011/09/04 10:10:26 christos Exp $");
1.1 jtc 14: #endif /* !defined lint */
15:
1.30 ! christos 16: #include "version.h"
1.1 jtc 17: #include "private.h"
1.5 jtc 18: #include "locale.h"
1.1 jtc 19: #include "tzfile.h"
1.19 kleink 20:
1.25 mlelstv 21: #define ZIC_VERSION '2'
22:
23: typedef int_fast64_t zic_t;
24:
25: #ifndef ZIC_MAX_ABBR_LEN_WO_WARN
26: #define ZIC_MAX_ABBR_LEN_WO_WARN 6
27: #endif /* !defined ZIC_MAX_ABBR_LEN_WO_WARN */
28:
1.19 kleink 29: #if HAVE_SYS_STAT_H
30: #include "sys/stat.h"
31: #endif
32: #ifdef S_IRUSR
33: #define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
34: #else
35: #define MKDIR_UMASK 0755
36: #endif
37:
1.13 kleink 38: #include "unistd.h"
1.1 jtc 39:
1.3 jtc 40: /*
41: ** On some ancient hosts, predicates like `isspace(C)' are defined
1.25 mlelstv 42: ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
1.3 jtc 43: ** which says they are defined only if C == ((unsigned char) C) || C == EOF.
44: ** Neither the C Standard nor Posix require that `isascii' exist.
45: ** For portability, we check both ancient and modern requirements.
46: ** If isascii is not defined, the isascii check succeeds trivially.
47: */
48: #include "ctype.h"
49: #ifndef isascii
50: #define isascii(x) 1
51: #endif
52:
1.25 mlelstv 53: #define OFFSET_STRLEN_MAXIMUM (7 + INT_STRLEN_MAXIMUM(long))
54: #define RULE_STRLEN_MAXIMUM 8 /* "Mdd.dd.d" */
55:
56: #define end(cp) (strchr((cp), '\0'))
57:
1.1 jtc 58: struct rule {
59: const char * r_filename;
60: int r_linenum;
61: const char * r_name;
62:
63: int r_loyear; /* for example, 1986 */
64: int r_hiyear; /* for example, 1986 */
65: const char * r_yrtype;
1.25 mlelstv 66: int r_lowasnum;
67: int r_hiwasnum;
1.1 jtc 68:
69: int r_month; /* 0..11 */
70:
71: int r_dycode; /* see below */
72: int r_dayofmonth;
73: int r_wday;
74:
75: long r_tod; /* time from midnight */
76: int r_todisstd; /* above is standard time if TRUE */
77: /* or wall clock time if FALSE */
78: int r_todisgmt; /* above is GMT if TRUE */
79: /* or local time if FALSE */
80: long r_stdoff; /* offset from standard time */
81: const char * r_abbrvar; /* variable part of abbreviation */
82:
83: int r_todo; /* a rule to do (used in outzone) */
1.25 mlelstv 84: zic_t r_temp; /* used in outzone */
1.1 jtc 85: };
86:
87: /*
88: ** r_dycode r_dayofmonth r_wday
89: */
90:
91: #define DC_DOM 0 /* 1..31 */ /* unused */
92: #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
93: #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
94:
95: struct zone {
96: const char * z_filename;
97: int z_linenum;
98:
99: const char * z_name;
100: long z_gmtoff;
101: const char * z_rule;
102: const char * z_format;
103:
104: long z_stdoff;
105:
106: struct rule * z_rules;
107: int z_nrules;
108:
109: struct rule z_untilrule;
1.25 mlelstv 110: zic_t z_untiltime;
1.1 jtc 111: };
112:
1.25 mlelstv 113: extern int getopt(int argc, char * const argv[],
114: const char * options);
115: extern int link(const char * fromname, const char * toname);
1.1 jtc 116: extern char * optarg;
117: extern int optind;
118:
1.25 mlelstv 119: static void addtt(zic_t starttime, int type);
120: static int addtype(long gmtoff, const char * abbr, int isdst,
121: int ttisstd, int ttisgmt);
122: static void leapadd(zic_t t, int positive, int rolling, int count);
123: static void adjleap(void);
124: static void associate(void);
125: static int ciequal(const char * ap, const char * bp);
126: static void convert(long val, char * buf);
127: static void convert64(zic_t val, char * buf);
128: static void dolink(const char * fromfield, const char * tofield);
129: static void doabbr(char * abbr, const int, const char * format,
130: const char * letters, int isdst, int doquotes);
131: static void eat(const char * name, int num);
132: static void eats(const char * name, int num,
133: const char * rname, int rnum);
134: static long eitol(int i);
135: static void error(const char * message);
136: static char ** getfields(char * buf);
137: static long gethms(const char * string, const char * errstrng,
138: int signable);
139: static void infile(const char * filename);
140: static void inleap(char ** fields, int nfields);
141: static void inlink(char ** fields, int nfields);
142: static void inrule(char ** fields, int nfields);
143: static int inzcont(char ** fields, int nfields);
144: static int inzone(char ** fields, int nfields);
145: static int inzsub(char ** fields, int nfields, int iscont);
146: static int is32(zic_t x);
147: static int itsabbr(const char * abbr, const char * word);
148: static int itsdir(const char * name);
149: static int lowerit(int c);
150: int main(int, char **);
151: static char * memcheck(char * tocheck);
152: static int mkdirs(char * filename);
153: static void newabbr(const char * abbr);
154: static long oadd(long t1, long t2);
155: static void outzone(const struct zone * zp, int ntzones);
156: static void puttzcode(long code, FILE * fp);
157: static void puttzcode64(zic_t code, FILE * fp);
158: static int rcomp(const void * leftp, const void * rightp);
159: static zic_t rpytime(const struct rule * rp, int wantedy);
160: static void rulesub(struct rule * rp,
1.1 jtc 161: const char * loyearp, const char * hiyearp,
162: const char * typep, const char * monthp,
1.25 mlelstv 163: const char * dayp, const char * timep);
164: static int stringoffset(char * result, long offset);
165: static int stringrule(char * result, const struct rule * rp,
166: long dstoff, long gmtoff);
167: static void stringzone(char * result, const int,
168: const struct zone * zp, int ntzones);
169: static void setboundaries(void);
170: static zic_t tadd(zic_t t1, long t2);
171: static void usage(FILE *stream, int status);
172: static void warning(const char * const);
173: static void writezone(const char * name, const char * string);
174: static int yearistype(int year, const char * type);
175: static int atcomp(const void *avp, const void *bvp);
176: static void updateminmax(int x);
1.5 jtc 177:
1.1 jtc 178: static int charcnt;
179: static int errors;
180: static const char * filename;
181: static int leapcnt;
1.25 mlelstv 182: static int leapseen;
183: static int leapminyear;
184: static int leapmaxyear;
1.1 jtc 185: static int linenum;
1.25 mlelstv 186: static int max_abbrvar_len;
187: static int max_format_len;
188: static zic_t max_time;
1.1 jtc 189: static int max_year;
1.25 mlelstv 190: static zic_t min_time;
1.1 jtc 191: static int min_year;
192: static int noise;
193: static const char * rfilename;
194: static int rlinenum;
195: static const char * progname;
196: static int timecnt;
197: static int typecnt;
198:
199: /*
200: ** Line codes.
201: */
202:
203: #define LC_RULE 0
204: #define LC_ZONE 1
205: #define LC_LINK 2
206: #define LC_LEAP 3
207:
208: /*
209: ** Which fields are which on a Zone line.
210: */
211:
212: #define ZF_NAME 1
213: #define ZF_GMTOFF 2
214: #define ZF_RULE 3
215: #define ZF_FORMAT 4
216: #define ZF_TILYEAR 5
217: #define ZF_TILMONTH 6
218: #define ZF_TILDAY 7
219: #define ZF_TILTIME 8
220: #define ZONE_MINFIELDS 5
221: #define ZONE_MAXFIELDS 9
222:
223: /*
224: ** Which fields are which on a Zone continuation line.
225: */
226:
227: #define ZFC_GMTOFF 0
228: #define ZFC_RULE 1
229: #define ZFC_FORMAT 2
230: #define ZFC_TILYEAR 3
231: #define ZFC_TILMONTH 4
232: #define ZFC_TILDAY 5
233: #define ZFC_TILTIME 6
234: #define ZONEC_MINFIELDS 3
235: #define ZONEC_MAXFIELDS 7
236:
237: /*
238: ** Which files are which on a Rule line.
239: */
240:
241: #define RF_NAME 1
242: #define RF_LOYEAR 2
243: #define RF_HIYEAR 3
244: #define RF_COMMAND 4
245: #define RF_MONTH 5
246: #define RF_DAY 6
247: #define RF_TOD 7
248: #define RF_STDOFF 8
249: #define RF_ABBRVAR 9
250: #define RULE_FIELDS 10
251:
252: /*
253: ** Which fields are which on a Link line.
254: */
255:
256: #define LF_FROM 1
257: #define LF_TO 2
258: #define LINK_FIELDS 3
259:
260: /*
261: ** Which fields are which on a Leap line.
262: */
263:
264: #define LP_YEAR 1
265: #define LP_MONTH 2
266: #define LP_DAY 3
267: #define LP_TIME 4
268: #define LP_CORR 5
269: #define LP_ROLL 6
270: #define LEAP_FIELDS 7
271:
272: /*
273: ** Year synonyms.
274: */
275:
276: #define YR_MINIMUM 0
277: #define YR_MAXIMUM 1
278: #define YR_ONLY 2
279:
280: static struct rule * rules;
281: static int nrules; /* number of rules */
282:
283: static struct zone * zones;
284: static int nzones; /* number of zones */
285:
286: struct link {
287: const char * l_filename;
288: int l_linenum;
289: const char * l_from;
290: const char * l_to;
291: };
292:
293: static struct link * links;
294: static int nlinks;
295:
296: struct lookup {
297: const char * l_word;
298: const int l_value;
299: };
300:
1.25 mlelstv 301: static struct lookup const * byword(const char * string,
302: const struct lookup * lp);
1.1 jtc 303:
304: static struct lookup const line_codes[] = {
305: { "Rule", LC_RULE },
306: { "Zone", LC_ZONE },
307: { "Link", LC_LINK },
308: { "Leap", LC_LEAP },
309: { NULL, 0}
310: };
311:
312: static struct lookup const mon_names[] = {
313: { "January", TM_JANUARY },
314: { "February", TM_FEBRUARY },
315: { "March", TM_MARCH },
316: { "April", TM_APRIL },
317: { "May", TM_MAY },
318: { "June", TM_JUNE },
319: { "July", TM_JULY },
320: { "August", TM_AUGUST },
321: { "September", TM_SEPTEMBER },
322: { "October", TM_OCTOBER },
323: { "November", TM_NOVEMBER },
324: { "December", TM_DECEMBER },
325: { NULL, 0 }
326: };
327:
328: static struct lookup const wday_names[] = {
329: { "Sunday", TM_SUNDAY },
330: { "Monday", TM_MONDAY },
331: { "Tuesday", TM_TUESDAY },
332: { "Wednesday", TM_WEDNESDAY },
333: { "Thursday", TM_THURSDAY },
334: { "Friday", TM_FRIDAY },
335: { "Saturday", TM_SATURDAY },
336: { NULL, 0 }
337: };
338:
339: static struct lookup const lasts[] = {
340: { "last-Sunday", TM_SUNDAY },
341: { "last-Monday", TM_MONDAY },
342: { "last-Tuesday", TM_TUESDAY },
343: { "last-Wednesday", TM_WEDNESDAY },
344: { "last-Thursday", TM_THURSDAY },
345: { "last-Friday", TM_FRIDAY },
346: { "last-Saturday", TM_SATURDAY },
347: { NULL, 0 }
348: };
349:
350: static struct lookup const begin_years[] = {
351: { "minimum", YR_MINIMUM },
352: { "maximum", YR_MAXIMUM },
353: { NULL, 0 }
354: };
355:
356: static struct lookup const end_years[] = {
357: { "minimum", YR_MINIMUM },
358: { "maximum", YR_MAXIMUM },
359: { "only", YR_ONLY },
360: { NULL, 0 }
361: };
362:
363: static struct lookup const leap_types[] = {
364: { "Rolling", TRUE },
365: { "Stationary", FALSE },
366: { NULL, 0 }
367: };
368:
369: static const int len_months[2][MONSPERYEAR] = {
370: { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
371: { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
372: };
373:
374: static const int len_years[2] = {
375: DAYSPERNYEAR, DAYSPERLYEAR
376: };
377:
1.5 jtc 378: static struct attype {
1.25 mlelstv 379: zic_t at;
1.5 jtc 380: unsigned char type;
381: } attypes[TZ_MAX_TIMES];
1.1 jtc 382: static long gmtoffs[TZ_MAX_TYPES];
383: static char isdsts[TZ_MAX_TYPES];
384: static unsigned char abbrinds[TZ_MAX_TYPES];
385: static char ttisstds[TZ_MAX_TYPES];
386: static char ttisgmts[TZ_MAX_TYPES];
387: static char chars[TZ_MAX_CHARS];
1.25 mlelstv 388: static zic_t trans[TZ_MAX_LEAPS];
1.1 jtc 389: static long corr[TZ_MAX_LEAPS];
390: static char roll[TZ_MAX_LEAPS];
391:
392: /*
393: ** Memory allocation.
394: */
395:
396: static char *
397: memcheck(ptr)
398: char * const ptr;
399: {
400: if (ptr == NULL) {
1.5 jtc 401: const char *e = strerror(errno);
1.7 jtc 402:
1.5 jtc 403: (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
404: progname, e);
1.25 mlelstv 405: exit(EXIT_FAILURE);
1.1 jtc 406: }
407: return ptr;
408: }
409:
410: #define emalloc(size) memcheck(imalloc(size))
411: #define erealloc(ptr, size) memcheck(irealloc((ptr), (size)))
412: #define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
413: #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
414:
415: /*
416: ** Error handling.
417: */
418:
419: static void
420: eats(name, num, rname, rnum)
421: const char * const name;
422: const int num;
423: const char * const rname;
424: const int rnum;
425: {
426: filename = name;
427: linenum = num;
428: rfilename = rname;
429: rlinenum = rnum;
430: }
431:
432: static void
433: eat(name, num)
434: const char * const name;
435: const int num;
436: {
437: eats(name, num, (char *) NULL, -1);
438: }
439:
440: static void
441: error(string)
442: const char * const string;
443: {
444: /*
445: ** Match the format of "cc" to allow sh users to
446: ** zic ... 2>&1 | error -t "*" -v
447: ** on BSD systems.
448: */
1.5 jtc 449: (void) fprintf(stderr, _("\"%s\", line %d: %s"),
1.1 jtc 450: filename, linenum, string);
451: if (rfilename != NULL)
1.5 jtc 452: (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"),
1.1 jtc 453: rfilename, rlinenum);
454: (void) fprintf(stderr, "\n");
455: ++errors;
456: }
457:
458: static void
1.5 jtc 459: warning(string)
460: const char * const string;
461: {
462: char * cp;
463:
1.15 kleink 464: cp = ecpyalloc(_("warning: "));
1.5 jtc 465: cp = ecatalloc(cp, string);
1.7 jtc 466: error(cp);
1.5 jtc 467: ifree(cp);
468: --errors;
469: }
470:
471: static void
1.25 mlelstv 472: usage(FILE *stream, int status)
1.1 jtc 473: {
1.25 mlelstv 474: (void) fprintf(stream, _("%s: usage is %s \
475: [ --version ] [ --help ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\
476: \t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n\
477: \n\
478: Report bugs to tz@elsie.nci.nih.gov.\n"),
479: progname, progname);
480: exit(status);
1.1 jtc 481: }
482:
483: static const char * psxrules;
484: static const char * lcltime;
485: static const char * directory;
486: static const char * leapsec;
487: static const char * yitcommand;
488:
489: int
490: main(argc, argv)
491: int argc;
492: char * argv[];
493: {
494: register int i;
495: register int j;
496: register int c;
497:
1.13 kleink 498: #ifdef _POSIX_VERSION
1.1 jtc 499: (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
1.13 kleink 500: #endif /* defined _POSIX_VERSION */
1.5 jtc 501: #if HAVE_GETTEXT - 0
502: (void) setlocale(LC_MESSAGES, "");
503: #ifdef TZ_DOMAINDIR
504: (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
505: #endif /* defined TEXTDOMAINDIR */
506: (void) textdomain(TZ_DOMAIN);
1.25 mlelstv 507: #endif /* HAVE_GETTEXT */
1.1 jtc 508: progname = argv[0];
1.25 mlelstv 509: if (TYPE_BIT(zic_t) < 64) {
510: (void) fprintf(stderr, "%s: %s\n", progname,
511: _("wild compilation-time specification of zic_t"));
512: exit(EXIT_FAILURE);
513: }
1.20 kleink 514: for (i = 1; i < argc; ++i)
515: if (strcmp(argv[i], "--version") == 0) {
1.30 ! christos 516: (void) printf("%s\n", TZVERSION);
1.25 mlelstv 517: exit(EXIT_SUCCESS);
518: } else if (strcmp(argv[i], "--help") == 0) {
519: usage(stdout, EXIT_SUCCESS);
1.20 kleink 520: }
1.7 jtc 521: while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
1.1 jtc 522: switch (c) {
523: default:
1.25 mlelstv 524: usage(stderr, EXIT_FAILURE);
1.1 jtc 525: case 'd':
526: if (directory == NULL)
527: directory = optarg;
528: else {
529: (void) fprintf(stderr,
1.5 jtc 530: _("%s: More than one -d option specified\n"),
1.1 jtc 531: progname);
1.25 mlelstv 532: exit(EXIT_FAILURE);
1.1 jtc 533: }
534: break;
535: case 'l':
536: if (lcltime == NULL)
537: lcltime = optarg;
538: else {
539: (void) fprintf(stderr,
1.5 jtc 540: _("%s: More than one -l option specified\n"),
1.1 jtc 541: progname);
1.25 mlelstv 542: exit(EXIT_FAILURE);
1.1 jtc 543: }
544: break;
545: case 'p':
546: if (psxrules == NULL)
547: psxrules = optarg;
548: else {
549: (void) fprintf(stderr,
1.5 jtc 550: _("%s: More than one -p option specified\n"),
1.1 jtc 551: progname);
1.25 mlelstv 552: exit(EXIT_FAILURE);
1.1 jtc 553: }
554: break;
555: case 'y':
556: if (yitcommand == NULL)
557: yitcommand = optarg;
558: else {
559: (void) fprintf(stderr,
1.5 jtc 560: _("%s: More than one -y option specified\n"),
1.1 jtc 561: progname);
1.25 mlelstv 562: exit(EXIT_FAILURE);
1.1 jtc 563: }
564: break;
565: case 'L':
566: if (leapsec == NULL)
567: leapsec = optarg;
568: else {
569: (void) fprintf(stderr,
1.5 jtc 570: _("%s: More than one -L option specified\n"),
1.1 jtc 571: progname);
1.25 mlelstv 572: exit(EXIT_FAILURE);
1.1 jtc 573: }
574: break;
575: case 'v':
576: noise = TRUE;
577: break;
578: case 's':
1.25 mlelstv 579: (void) printf("%s: -s ignored\n", progname);
1.1 jtc 580: break;
581: }
582: if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
1.25 mlelstv 583: usage(stderr, EXIT_FAILURE); /* usage message by request */
1.1 jtc 584: if (directory == NULL)
585: directory = TZDIR;
586: if (yitcommand == NULL)
587: yitcommand = "yearistype";
588:
589: setboundaries();
590:
591: if (optind < argc && leapsec != NULL) {
592: infile(leapsec);
593: adjleap();
594: }
595:
596: for (i = optind; i < argc; ++i)
597: infile(argv[i]);
598: if (errors)
1.25 mlelstv 599: exit(EXIT_FAILURE);
1.1 jtc 600: associate();
601: for (i = 0; i < nzones; i = j) {
602: /*
603: ** Find the next non-continuation zone entry.
604: */
605: for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
606: continue;
607: outzone(&zones[i], j - i);
608: }
609: /*
610: ** Make links.
611: */
1.15 kleink 612: for (i = 0; i < nlinks; ++i) {
613: eat(links[i].l_filename, links[i].l_linenum);
1.1 jtc 614: dolink(links[i].l_from, links[i].l_to);
1.25 mlelstv 615: if (noise)
616: for (j = 0; j < nlinks; ++j)
617: if (strcmp(links[i].l_to,
618: links[j].l_from) == 0)
619: warning(_("link to link"));
1.15 kleink 620: }
621: if (lcltime != NULL) {
622: eat("command line", 1);
1.1 jtc 623: dolink(lcltime, TZDEFAULT);
1.15 kleink 624: }
625: if (psxrules != NULL) {
626: eat("command line", 1);
1.1 jtc 627: dolink(psxrules, TZDEFRULES);
1.15 kleink 628: }
1.1 jtc 629: return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
630: }
631:
632: static void
1.25 mlelstv 633: dolink(fromfield, tofield)
634: const char * const fromfield;
635: const char * const tofield;
1.1 jtc 636: {
637: register char * fromname;
638: register char * toname;
639:
1.25 mlelstv 640: if (fromfield[0] == '/')
641: fromname = ecpyalloc(fromfield);
1.1 jtc 642: else {
643: fromname = ecpyalloc(directory);
644: fromname = ecatalloc(fromname, "/");
1.25 mlelstv 645: fromname = ecatalloc(fromname, fromfield);
1.1 jtc 646: }
1.25 mlelstv 647: if (tofield[0] == '/')
648: toname = ecpyalloc(tofield);
1.1 jtc 649: else {
650: toname = ecpyalloc(directory);
651: toname = ecatalloc(toname, "/");
1.25 mlelstv 652: toname = ecatalloc(toname, tofield);
1.1 jtc 653: }
654: /*
655: ** We get to be careful here since
656: ** there's a fair chance of root running us.
657: */
658: if (!itsdir(toname))
659: (void) remove(toname);
660: if (link(fromname, toname) != 0) {
1.12 kleink 661: int result;
662:
1.1 jtc 663: if (mkdirs(toname) != 0)
1.25 mlelstv 664: exit(EXIT_FAILURE);
1.15 kleink 665:
1.12 kleink 666: result = link(fromname, toname);
1.25 mlelstv 667: #if HAVE_SYMLINK
1.20 kleink 668: if (result != 0 &&
1.25 mlelstv 669: access(fromname, F_OK) == 0 &&
670: !itsdir(fromname)) {
671: const char *s = tofield;
672: register char * symlinkcontents = NULL;
673:
674: while ((s = strchr(s+1, '/')) != NULL)
675: symlinkcontents =
676: ecatalloc(symlinkcontents,
677: "../");
678: symlinkcontents =
679: ecatalloc(symlinkcontents,
680: fromname);
681: result = symlink(symlinkcontents,
682: toname);
683: if (result == 0)
1.12 kleink 684: warning(_("hard link failed, symbolic link used"));
1.25 mlelstv 685: ifree(symlinkcontents);
1.12 kleink 686: }
1.25 mlelstv 687: #endif /* HAVE_SYMLINK */
1.12 kleink 688: if (result != 0) {
1.5 jtc 689: const char *e = strerror(errno);
1.7 jtc 690:
1.5 jtc 691: (void) fprintf(stderr,
692: _("%s: Can't link from %s to %s: %s\n"),
693: progname, fromname, toname, e);
1.25 mlelstv 694: exit(EXIT_FAILURE);
1.1 jtc 695: }
696: }
697: ifree(fromname);
698: ifree(toname);
699: }
700:
1.25 mlelstv 701: #define TIME_T_BITS_IN_FILE 64
1.3 jtc 702:
1.1 jtc 703: static void
1.25 mlelstv 704: setboundaries(void)
1.1 jtc 705: {
1.25 mlelstv 706: register int i;
707:
708: min_time = -1;
709: for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
710: min_time *= 2;
711: max_time = -(min_time + 1);
1.1 jtc 712: }
713:
714: static int
715: itsdir(name)
716: const char * const name;
717: {
718: register char * myname;
719: register int accres;
720:
721: myname = ecpyalloc(name);
722: myname = ecatalloc(myname, "/.");
723: accres = access(myname, F_OK);
724: ifree(myname);
725: return accres == 0;
726: }
727:
728: /*
729: ** Associate sets of rules with zones.
730: */
731:
732: /*
733: ** Sort by rule name.
734: */
735:
736: static int
737: rcomp(cp1, cp2)
738: const void * cp1;
739: const void * cp2;
740: {
741: return strcmp(((const struct rule *) cp1)->r_name,
742: ((const struct rule *) cp2)->r_name);
743: }
744:
745: static void
1.25 mlelstv 746: associate(void)
1.1 jtc 747: {
748: register struct zone * zp;
749: register struct rule * rp;
750: register int base, out;
1.5 jtc 751: register int i, j;
1.1 jtc 752:
1.5 jtc 753: if (nrules != 0) {
1.1 jtc 754: (void) qsort((void *) rules, (size_t) nrules,
755: (size_t) sizeof *rules, rcomp);
1.5 jtc 756: for (i = 0; i < nrules - 1; ++i) {
757: if (strcmp(rules[i].r_name,
758: rules[i + 1].r_name) != 0)
759: continue;
760: if (strcmp(rules[i].r_filename,
761: rules[i + 1].r_filename) == 0)
762: continue;
763: eat(rules[i].r_filename, rules[i].r_linenum);
764: warning(_("same rule name in multiple files"));
765: eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
766: warning(_("same rule name in multiple files"));
767: for (j = i + 2; j < nrules; ++j) {
768: if (strcmp(rules[i].r_name,
769: rules[j].r_name) != 0)
770: break;
771: if (strcmp(rules[i].r_filename,
772: rules[j].r_filename) == 0)
773: continue;
774: if (strcmp(rules[i + 1].r_filename,
775: rules[j].r_filename) == 0)
776: continue;
777: break;
778: }
779: i = j - 1;
780: }
781: }
1.1 jtc 782: for (i = 0; i < nzones; ++i) {
783: zp = &zones[i];
784: zp->z_rules = NULL;
785: zp->z_nrules = 0;
786: }
787: for (base = 0; base < nrules; base = out) {
788: rp = &rules[base];
789: for (out = base + 1; out < nrules; ++out)
790: if (strcmp(rp->r_name, rules[out].r_name) != 0)
791: break;
792: for (i = 0; i < nzones; ++i) {
793: zp = &zones[i];
794: if (strcmp(zp->z_rule, rp->r_name) != 0)
795: continue;
796: zp->z_rules = rp;
797: zp->z_nrules = out - base;
798: }
799: }
800: for (i = 0; i < nzones; ++i) {
801: zp = &zones[i];
802: if (zp->z_nrules == 0) {
803: /*
804: ** Maybe we have a local standard time offset.
805: */
806: eat(zp->z_filename, zp->z_linenum);
1.5 jtc 807: zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
1.25 mlelstv 808: TRUE);
1.1 jtc 809: /*
810: ** Note, though, that if there's no rule,
811: ** a '%s' in the format is a bad thing.
812: */
813: if (strchr(zp->z_format, '%') != 0)
1.5 jtc 814: error(_("%s in ruleless zone"));
1.1 jtc 815: }
816: }
817: if (errors)
1.25 mlelstv 818: exit(EXIT_FAILURE);
1.1 jtc 819: }
820:
821: static void
822: infile(name)
823: const char * name;
824: {
825: register FILE * fp;
826: register char ** fields;
827: register char * cp;
828: register const struct lookup * lp;
829: register int nfields;
830: register int wantcont;
831: register int num;
832: char buf[BUFSIZ];
833:
834: if (strcmp(name, "-") == 0) {
1.5 jtc 835: name = _("standard input");
1.1 jtc 836: fp = stdin;
837: } else if ((fp = fopen(name, "r")) == NULL) {
1.5 jtc 838: const char *e = strerror(errno);
1.7 jtc 839:
1.5 jtc 840: (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
841: progname, name, e);
1.25 mlelstv 842: exit(EXIT_FAILURE);
1.1 jtc 843: }
844: wantcont = FALSE;
845: for (num = 1; ; ++num) {
846: eat(name, num);
847: if (fgets(buf, (int) sizeof buf, fp) != buf)
848: break;
849: cp = strchr(buf, '\n');
850: if (cp == NULL) {
1.5 jtc 851: error(_("line too long"));
1.25 mlelstv 852: exit(EXIT_FAILURE);
1.1 jtc 853: }
854: *cp = '\0';
855: fields = getfields(buf);
856: nfields = 0;
857: while (fields[nfields] != NULL) {
858: static char nada;
859:
1.3 jtc 860: if (strcmp(fields[nfields], "-") == 0)
1.1 jtc 861: fields[nfields] = &nada;
862: ++nfields;
863: }
864: if (nfields == 0) {
865: /* nothing to do */
866: } else if (wantcont) {
867: wantcont = inzcont(fields, nfields);
868: } else {
869: lp = byword(fields[0], line_codes);
870: if (lp == NULL)
1.5 jtc 871: error(_("input line of unknown type"));
1.1 jtc 872: else switch ((int) (lp->l_value)) {
873: case LC_RULE:
874: inrule(fields, nfields);
875: wantcont = FALSE;
876: break;
877: case LC_ZONE:
878: wantcont = inzone(fields, nfields);
879: break;
880: case LC_LINK:
881: inlink(fields, nfields);
882: wantcont = FALSE;
883: break;
884: case LC_LEAP:
885: if (name != leapsec)
886: (void) fprintf(stderr,
1.5 jtc 887: _("%s: Leap line in non leap seconds file %s\n"),
1.1 jtc 888: progname, name);
889: else inleap(fields, nfields);
890: wantcont = FALSE;
891: break;
892: default: /* "cannot happen" */
893: (void) fprintf(stderr,
1.5 jtc 894: _("%s: panic: Invalid l_value %d\n"),
1.1 jtc 895: progname, lp->l_value);
1.25 mlelstv 896: exit(EXIT_FAILURE);
1.1 jtc 897: }
898: }
899: ifree((char *) fields);
900: }
901: if (ferror(fp)) {
1.5 jtc 902: (void) fprintf(stderr, _("%s: Error reading %s\n"),
903: progname, filename);
1.25 mlelstv 904: exit(EXIT_FAILURE);
1.1 jtc 905: }
906: if (fp != stdin && fclose(fp)) {
1.5 jtc 907: const char *e = strerror(errno);
1.7 jtc 908:
1.5 jtc 909: (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
910: progname, filename, e);
1.25 mlelstv 911: exit(EXIT_FAILURE);
1.1 jtc 912: }
913: if (wantcont)
1.5 jtc 914: error(_("expected continuation line not found"));
1.1 jtc 915: }
916:
917: /*
918: ** Convert a string of one of the forms
919: ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
920: ** into a number of seconds.
921: ** A null string maps to zero.
922: ** Call error with errstring and return zero on errors.
923: */
924:
925: static long
926: gethms(string, errstring, signable)
927: const char * string;
928: const char * const errstring;
929: const int signable;
930: {
1.25 mlelstv 931: long hh;
932: int mm, ss, sign;
1.1 jtc 933:
934: if (string == NULL || *string == '\0')
935: return 0;
936: if (!signable)
937: sign = 1;
938: else if (*string == '-') {
939: sign = -1;
940: ++string;
941: } else sign = 1;
1.25 mlelstv 942: if (sscanf(string, scheck(string, "%ld"), &hh) == 1)
1.1 jtc 943: mm = ss = 0;
1.25 mlelstv 944: else if (sscanf(string, scheck(string, "%ld:%d"), &hh, &mm) == 2)
1.1 jtc 945: ss = 0;
1.25 mlelstv 946: else if (sscanf(string, scheck(string, "%ld:%d:%d"),
1.1 jtc 947: &hh, &mm, &ss) != 3) {
948: error(errstring);
949: return 0;
950: }
1.25 mlelstv 951: if (hh < 0 ||
1.1 jtc 952: mm < 0 || mm >= MINSPERHOUR ||
1.25 mlelstv 953: ss < 0 || ss > SECSPERMIN) {
1.1 jtc 954: error(errstring);
955: return 0;
956: }
1.25 mlelstv 957: if (LONG_MAX / SECSPERHOUR < hh) {
958: error(_("time overflow"));
959: return 0;
960: }
961: if (noise && hh == HOURSPERDAY && mm == 0 && ss == 0)
1.21 kleink 962: warning(_("24:00 not handled by pre-1998 versions of zic"));
1.25 mlelstv 963: if (noise && (hh > HOURSPERDAY ||
964: (hh == HOURSPERDAY && (mm != 0 || ss != 0))))
965: warning(_("values over 24 hours not handled by pre-2007 versions of zic"));
966: return oadd(eitol(sign) * hh * eitol(SECSPERHOUR),
967: eitol(sign) * (eitol(mm) * eitol(SECSPERMIN) + eitol(ss)));
1.1 jtc 968: }
969:
970: static void
971: inrule(fields, nfields)
972: register char ** const fields;
973: const int nfields;
974: {
975: static struct rule r;
976:
977: if (nfields != RULE_FIELDS) {
1.5 jtc 978: error(_("wrong number of fields on Rule line"));
1.1 jtc 979: return;
980: }
981: if (*fields[RF_NAME] == '\0') {
1.5 jtc 982: error(_("nameless rule"));
1.1 jtc 983: return;
984: }
985: r.r_filename = filename;
986: r.r_linenum = linenum;
1.5 jtc 987: r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
1.1 jtc 988: rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
989: fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
990: r.r_name = ecpyalloc(fields[RF_NAME]);
991: r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
1.25 mlelstv 992: if (max_abbrvar_len < strlen(r.r_abbrvar))
993: max_abbrvar_len = strlen(r.r_abbrvar);
1.1 jtc 994: rules = (struct rule *) (void *) erealloc((char *) rules,
995: (int) ((nrules + 1) * sizeof *rules));
996: rules[nrules++] = r;
997: }
998:
999: static int
1000: inzone(fields, nfields)
1001: register char ** const fields;
1002: const int nfields;
1003: {
1004: register int i;
1005: static char * buf;
1006:
1007: if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
1.5 jtc 1008: error(_("wrong number of fields on Zone line"));
1.1 jtc 1009: return FALSE;
1010: }
1011: if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
1012: buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
1.6 mrg 1013: (void)sprintf(buf, /* XXX: sprintf is safe */
1.5 jtc 1014: _("\"Zone %s\" line and -l option are mutually exclusive"),
1.1 jtc 1015: TZDEFAULT);
1016: error(buf);
1017: return FALSE;
1018: }
1019: if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
1020: buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
1.6 mrg 1021: (void)sprintf(buf, /* XXX: sprintf is safe */
1.5 jtc 1022: _("\"Zone %s\" line and -p option are mutually exclusive"),
1.1 jtc 1023: TZDEFRULES);
1024: error(buf);
1025: return FALSE;
1026: }
1027: for (i = 0; i < nzones; ++i)
1028: if (zones[i].z_name != NULL &&
1029: strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
1030: buf = erealloc(buf, (int) (132 +
1031: strlen(fields[ZF_NAME]) +
1032: strlen(zones[i].z_filename)));
1.6 mrg 1033: (void)sprintf(buf, /* XXX: sprintf is safe */
1.5 jtc 1034: _("duplicate zone name %s (file \"%s\", line %d)"),
1.1 jtc 1035: fields[ZF_NAME],
1036: zones[i].z_filename,
1037: zones[i].z_linenum);
1038: error(buf);
1039: return FALSE;
1040: }
1041: return inzsub(fields, nfields, FALSE);
1042: }
1043:
1044: static int
1045: inzcont(fields, nfields)
1046: register char ** const fields;
1047: const int nfields;
1048: {
1049: if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
1.5 jtc 1050: error(_("wrong number of fields on Zone continuation line"));
1.1 jtc 1051: return FALSE;
1052: }
1053: return inzsub(fields, nfields, TRUE);
1054: }
1055:
1056: static int
1057: inzsub(fields, nfields, iscont)
1058: register char ** const fields;
1059: const int nfields;
1060: const int iscont;
1061: {
1062: register char * cp;
1063: static struct zone z;
1064: register int i_gmtoff, i_rule, i_format;
1065: register int i_untilyear, i_untilmonth;
1066: register int i_untilday, i_untiltime;
1067: register int hasuntil;
1068:
1069: if (iscont) {
1070: i_gmtoff = ZFC_GMTOFF;
1071: i_rule = ZFC_RULE;
1072: i_format = ZFC_FORMAT;
1073: i_untilyear = ZFC_TILYEAR;
1074: i_untilmonth = ZFC_TILMONTH;
1075: i_untilday = ZFC_TILDAY;
1076: i_untiltime = ZFC_TILTIME;
1077: z.z_name = NULL;
1078: } else {
1079: i_gmtoff = ZF_GMTOFF;
1080: i_rule = ZF_RULE;
1081: i_format = ZF_FORMAT;
1082: i_untilyear = ZF_TILYEAR;
1083: i_untilmonth = ZF_TILMONTH;
1084: i_untilday = ZF_TILDAY;
1085: i_untiltime = ZF_TILTIME;
1086: z.z_name = ecpyalloc(fields[ZF_NAME]);
1087: }
1088: z.z_filename = filename;
1089: z.z_linenum = linenum;
1.11 jtc 1090: z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
1.1 jtc 1091: if ((cp = strchr(fields[i_format], '%')) != 0) {
1092: if (*++cp != 's' || strchr(cp, '%') != 0) {
1.5 jtc 1093: error(_("invalid abbreviation format"));
1.1 jtc 1094: return FALSE;
1095: }
1096: }
1097: z.z_rule = ecpyalloc(fields[i_rule]);
1098: z.z_format = ecpyalloc(fields[i_format]);
1.25 mlelstv 1099: if (max_format_len < strlen(z.z_format))
1100: max_format_len = strlen(z.z_format);
1.1 jtc 1101: hasuntil = nfields > i_untilyear;
1102: if (hasuntil) {
1103: z.z_untilrule.r_filename = filename;
1104: z.z_untilrule.r_linenum = linenum;
1105: rulesub(&z.z_untilrule,
1106: fields[i_untilyear],
1107: "only",
1108: "",
1109: (nfields > i_untilmonth) ?
1110: fields[i_untilmonth] : "Jan",
1111: (nfields > i_untilday) ? fields[i_untilday] : "1",
1112: (nfields > i_untiltime) ? fields[i_untiltime] : "0");
1113: z.z_untiltime = rpytime(&z.z_untilrule,
1114: z.z_untilrule.r_loyear);
1115: if (iscont && nzones > 0 &&
1116: z.z_untiltime > min_time &&
1117: z.z_untiltime < max_time &&
1118: zones[nzones - 1].z_untiltime > min_time &&
1119: zones[nzones - 1].z_untiltime < max_time &&
1120: zones[nzones - 1].z_untiltime >= z.z_untiltime) {
1.25 mlelstv 1121: error(_(
1122: "Zone continuation line end time is not after end time of previous line"
1123: ));
1.1 jtc 1124: return FALSE;
1125: }
1126: }
1127: zones = (struct zone *) (void *) erealloc((char *) zones,
1128: (int) ((nzones + 1) * sizeof *zones));
1129: zones[nzones++] = z;
1130: /*
1131: ** If there was an UNTIL field on this line,
1132: ** there's more information about the zone on the next line.
1133: */
1134: return hasuntil;
1135: }
1136:
1137: static void
1138: inleap(fields, nfields)
1139: register char ** const fields;
1140: const int nfields;
1141: {
1142: register const char * cp;
1143: register const struct lookup * lp;
1144: register int i, j;
1145: int year, month, day;
1146: long dayoff, tod;
1.25 mlelstv 1147: zic_t t;
1.1 jtc 1148:
1149: if (nfields != LEAP_FIELDS) {
1.5 jtc 1150: error(_("wrong number of fields on Leap line"));
1.1 jtc 1151: return;
1152: }
1153: dayoff = 0;
1154: cp = fields[LP_YEAR];
1155: if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
1.25 mlelstv 1156: /*
1157: ** Leapin' Lizards!
1158: */
1159: error(_("invalid leaping year"));
1160: return;
1.1 jtc 1161: }
1.25 mlelstv 1162: if (!leapseen || leapmaxyear < year)
1163: leapmaxyear = year;
1164: if (!leapseen || leapminyear > year)
1165: leapminyear = year;
1166: leapseen = TRUE;
1.1 jtc 1167: j = EPOCH_YEAR;
1168: while (j != year) {
1169: if (year > j) {
1170: i = len_years[isleap(j)];
1171: ++j;
1172: } else {
1173: --j;
1174: i = -len_years[isleap(j)];
1175: }
1176: dayoff = oadd(dayoff, eitol(i));
1177: }
1178: if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
1.5 jtc 1179: error(_("invalid month name"));
1.1 jtc 1180: return;
1181: }
1182: month = lp->l_value;
1183: j = TM_JANUARY;
1184: while (j != month) {
1185: i = len_months[isleap(year)][j];
1186: dayoff = oadd(dayoff, eitol(i));
1187: ++j;
1188: }
1189: cp = fields[LP_DAY];
1190: if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
1191: day <= 0 || day > len_months[isleap(year)][month]) {
1.5 jtc 1192: error(_("invalid day of month"));
1.1 jtc 1193: return;
1194: }
1195: dayoff = oadd(dayoff, eitol(day - 1));
1.25 mlelstv 1196: if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
1.5 jtc 1197: error(_("time before zero"));
1.1 jtc 1198: return;
1199: }
1.20 kleink 1200: if (dayoff < min_time / SECSPERDAY) {
1201: error(_("time too small"));
1202: return;
1203: }
1204: if (dayoff > max_time / SECSPERDAY) {
1205: error(_("time too large"));
1.1 jtc 1206: return;
1207: }
1.25 mlelstv 1208: t = (zic_t) dayoff * SECSPERDAY;
1.5 jtc 1209: tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
1.1 jtc 1210: cp = fields[LP_CORR];
1211: {
1212: register int positive;
1213: int count;
1214:
1215: if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
1216: positive = FALSE;
1217: count = 1;
1218: } else if (strcmp(cp, "--") == 0) {
1219: positive = FALSE;
1220: count = 2;
1221: } else if (strcmp(cp, "+") == 0) {
1222: positive = TRUE;
1223: count = 1;
1224: } else if (strcmp(cp, "++") == 0) {
1225: positive = TRUE;
1226: count = 2;
1227: } else {
1.5 jtc 1228: error(_("illegal CORRECTION field on Leap line"));
1.1 jtc 1229: return;
1230: }
1231: if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
1.25 mlelstv 1232: error(_(
1233: "illegal Rolling/Stationary field on Leap line"
1234: ));
1.1 jtc 1235: return;
1236: }
1237: leapadd(tadd(t, tod), positive, lp->l_value, count);
1238: }
1239: }
1240:
1241: static void
1242: inlink(fields, nfields)
1243: register char ** const fields;
1244: const int nfields;
1245: {
1246: struct link l;
1247:
1248: if (nfields != LINK_FIELDS) {
1.5 jtc 1249: error(_("wrong number of fields on Link line"));
1.1 jtc 1250: return;
1251: }
1252: if (*fields[LF_FROM] == '\0') {
1.5 jtc 1253: error(_("blank FROM field on Link line"));
1.1 jtc 1254: return;
1255: }
1256: if (*fields[LF_TO] == '\0') {
1.5 jtc 1257: error(_("blank TO field on Link line"));
1.1 jtc 1258: return;
1259: }
1260: l.l_filename = filename;
1261: l.l_linenum = linenum;
1262: l.l_from = ecpyalloc(fields[LF_FROM]);
1263: l.l_to = ecpyalloc(fields[LF_TO]);
1264: links = (struct link *) (void *) erealloc((char *) links,
1265: (int) ((nlinks + 1) * sizeof *links));
1266: links[nlinks++] = l;
1267: }
1268:
1269: static void
1270: rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
1271: register struct rule * const rp;
1272: const char * const loyearp;
1273: const char * const hiyearp;
1274: const char * const typep;
1275: const char * const monthp;
1276: const char * const dayp;
1277: const char * const timep;
1278: {
1279: register const struct lookup * lp;
1280: register const char * cp;
1281: register char * dp;
1282: register char * ep;
1283:
1284: if ((lp = byword(monthp, mon_names)) == NULL) {
1.5 jtc 1285: error(_("invalid month name"));
1.1 jtc 1286: return;
1287: }
1288: rp->r_month = lp->l_value;
1289: rp->r_todisstd = FALSE;
1290: rp->r_todisgmt = FALSE;
1291: dp = ecpyalloc(timep);
1292: if (*dp != '\0') {
1293: ep = dp + strlen(dp) - 1;
1294: switch (lowerit(*ep)) {
1295: case 's': /* Standard */
1296: rp->r_todisstd = TRUE;
1297: rp->r_todisgmt = FALSE;
1298: *ep = '\0';
1299: break;
1300: case 'w': /* Wall */
1301: rp->r_todisstd = FALSE;
1302: rp->r_todisgmt = FALSE;
1303: *ep = '\0';
1.7 jtc 1304: break;
1.1 jtc 1305: case 'g': /* Greenwich */
1306: case 'u': /* Universal */
1307: case 'z': /* Zulu */
1308: rp->r_todisstd = TRUE;
1309: rp->r_todisgmt = TRUE;
1310: *ep = '\0';
1311: break;
1312: }
1313: }
1.5 jtc 1314: rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
1.1 jtc 1315: ifree(dp);
1316: /*
1317: ** Year work.
1318: */
1319: cp = loyearp;
1320: lp = byword(cp, begin_years);
1.25 mlelstv 1321: rp->r_lowasnum = lp == NULL;
1322: if (!rp->r_lowasnum) switch ((int) lp->l_value) {
1.1 jtc 1323: case YR_MINIMUM:
1.3 jtc 1324: rp->r_loyear = INT_MIN;
1.1 jtc 1325: break;
1326: case YR_MAXIMUM:
1.3 jtc 1327: rp->r_loyear = INT_MAX;
1.1 jtc 1328: break;
1329: default: /* "cannot happen" */
1330: (void) fprintf(stderr,
1.5 jtc 1331: _("%s: panic: Invalid l_value %d\n"),
1.1 jtc 1332: progname, lp->l_value);
1.25 mlelstv 1333: exit(EXIT_FAILURE);
1.1 jtc 1334: } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
1.5 jtc 1335: error(_("invalid starting year"));
1.1 jtc 1336: return;
1.11 jtc 1337: }
1.1 jtc 1338: cp = hiyearp;
1.25 mlelstv 1339: lp = byword(cp, end_years);
1340: rp->r_hiwasnum = lp == NULL;
1341: if (!rp->r_hiwasnum) switch ((int) lp->l_value) {
1.1 jtc 1342: case YR_MINIMUM:
1.3 jtc 1343: rp->r_hiyear = INT_MIN;
1.1 jtc 1344: break;
1345: case YR_MAXIMUM:
1.3 jtc 1346: rp->r_hiyear = INT_MAX;
1.1 jtc 1347: break;
1348: case YR_ONLY:
1349: rp->r_hiyear = rp->r_loyear;
1350: break;
1351: default: /* "cannot happen" */
1352: (void) fprintf(stderr,
1.5 jtc 1353: _("%s: panic: Invalid l_value %d\n"),
1.1 jtc 1354: progname, lp->l_value);
1.25 mlelstv 1355: exit(EXIT_FAILURE);
1.1 jtc 1356: } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
1.5 jtc 1357: error(_("invalid ending year"));
1.1 jtc 1358: return;
1.11 jtc 1359: }
1.1 jtc 1360: if (rp->r_loyear > rp->r_hiyear) {
1.5 jtc 1361: error(_("starting year greater than ending year"));
1.1 jtc 1362: return;
1363: }
1364: if (*typep == '\0')
1365: rp->r_yrtype = NULL;
1366: else {
1367: if (rp->r_loyear == rp->r_hiyear) {
1.5 jtc 1368: error(_("typed single year"));
1.1 jtc 1369: return;
1370: }
1371: rp->r_yrtype = ecpyalloc(typep);
1372: }
1373: /*
1374: ** Day work.
1375: ** Accept things such as:
1376: ** 1
1377: ** last-Sunday
1378: ** Sun<=20
1379: ** Sun>=7
1380: */
1381: dp = ecpyalloc(dayp);
1382: if ((lp = byword(dp, lasts)) != NULL) {
1383: rp->r_dycode = DC_DOWLEQ;
1384: rp->r_wday = lp->l_value;
1385: rp->r_dayofmonth = len_months[1][rp->r_month];
1386: } else {
1387: if ((ep = strchr(dp, '<')) != 0)
1388: rp->r_dycode = DC_DOWLEQ;
1389: else if ((ep = strchr(dp, '>')) != 0)
1390: rp->r_dycode = DC_DOWGEQ;
1391: else {
1392: ep = dp;
1393: rp->r_dycode = DC_DOM;
1394: }
1395: if (rp->r_dycode != DC_DOM) {
1396: *ep++ = 0;
1397: if (*ep++ != '=') {
1.5 jtc 1398: error(_("invalid day of month"));
1.1 jtc 1399: ifree(dp);
1400: return;
1401: }
1402: if ((lp = byword(dp, wday_names)) == NULL) {
1.5 jtc 1403: error(_("invalid weekday name"));
1.1 jtc 1404: ifree(dp);
1405: return;
1406: }
1407: rp->r_wday = lp->l_value;
1408: }
1409: if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
1410: rp->r_dayofmonth <= 0 ||
1411: (rp->r_dayofmonth > len_months[1][rp->r_month])) {
1.5 jtc 1412: error(_("invalid day of month"));
1.1 jtc 1413: ifree(dp);
1414: return;
1415: }
1416: }
1417: ifree(dp);
1418: }
1419:
1420: static void
1421: convert(val, buf)
1422: const long val;
1423: char * const buf;
1424: {
1425: register int i;
1.25 mlelstv 1426: register int shift;
1.1 jtc 1427:
1428: for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
1429: buf[i] = val >> shift;
1430: }
1431:
1432: static void
1.25 mlelstv 1433: convert64(val, buf)
1434: const zic_t val;
1435: char * const buf;
1436: {
1437: register int i;
1438: register int shift;
1439:
1440: for (i = 0, shift = 56; i < 8; ++i, shift -= 8)
1441: buf[i] = val >> shift;
1442: }
1443:
1444: static void
1.1 jtc 1445: puttzcode(val, fp)
1446: const long val;
1447: FILE * const fp;
1448: {
1449: char buf[4];
1450:
1451: convert(val, buf);
1452: (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
1453: }
1454:
1.25 mlelstv 1455: static void
1456: puttzcode64(val, fp)
1457: const zic_t val;
1458: FILE * const fp;
1459: {
1460: char buf[8];
1461:
1462: convert64(val, buf);
1463: (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
1464: }
1465:
1.5 jtc 1466: static int
1467: atcomp(avp, bvp)
1.10 lukem 1468: const void * avp;
1469: const void * bvp;
1.5 jtc 1470: {
1.25 mlelstv 1471: const zic_t a = ((const struct attype *) avp)->at;
1472: const zic_t b = ((const struct attype *) bvp)->at;
1473:
1474: return (a < b) ? -1 : (a > b);
1475: }
1476:
1477: static int
1478: is32(x)
1479: const zic_t x;
1480: {
1481: return INT32_MIN <= x && x <= INT32_MAX;
1.5 jtc 1482: }
1483:
1.1 jtc 1484: static void
1.25 mlelstv 1485: writezone(name, string)
1.1 jtc 1486: const char * const name;
1.25 mlelstv 1487: const char * const string;
1.1 jtc 1488: {
1.25 mlelstv 1489: register FILE * fp;
1490: register int i, j;
1491: register int leapcnt32, leapi32;
1492: register int timecnt32, timei32;
1493: register int pass;
1494: static char * fullname;
1495: static const struct tzhead tzh0;
1496: static struct tzhead tzh;
1497: zic_t ats[TZ_MAX_TIMES];
1498: unsigned char types[TZ_MAX_TIMES];
1.5 jtc 1499:
1500: /*
1501: ** Sort.
1502: */
1503: if (timecnt > 1)
1504: (void) qsort((void *) attypes, (size_t) timecnt,
1505: (size_t) sizeof *attypes, atcomp);
1506: /*
1507: ** Optimize.
1508: */
1509: {
1510: int fromi;
1511: int toi;
1.1 jtc 1512:
1.5 jtc 1513: toi = 0;
1514: fromi = 0;
1.7 jtc 1515: while (fromi < timecnt && attypes[fromi].at < min_time)
1516: ++fromi;
1.5 jtc 1517: if (isdsts[0] == 0)
1.7 jtc 1518: while (fromi < timecnt && attypes[fromi].type == 0)
1.5 jtc 1519: ++fromi; /* handled by default rule */
1520: for ( ; fromi < timecnt; ++fromi) {
1.25 mlelstv 1521: if (toi != 0 && ((attypes[fromi].at +
1522: gmtoffs[attypes[toi - 1].type]) <=
1523: (attypes[toi - 1].at + gmtoffs[toi == 1 ? 0
1524: : attypes[toi - 2].type]))) {
1525: attypes[toi - 1].type =
1526: attypes[fromi].type;
1527: continue;
1.5 jtc 1528: }
1529: if (toi == 0 ||
1530: attypes[toi - 1].type != attypes[fromi].type)
1531: attypes[toi++] = attypes[fromi];
1532: }
1533: timecnt = toi;
1534: }
1535: /*
1536: ** Transfer.
1537: */
1538: for (i = 0; i < timecnt; ++i) {
1539: ats[i] = attypes[i].at;
1540: types[i] = attypes[i].type;
1541: }
1.25 mlelstv 1542: /*
1543: ** Correct for leap seconds.
1544: */
1545: for (i = 0; i < timecnt; ++i) {
1546: j = leapcnt;
1547: while (--j >= 0)
1548: if (ats[i] > trans[j] - corr[j]) {
1549: ats[i] = tadd(ats[i], corr[j]);
1550: break;
1551: }
1552: }
1553: /*
1554: ** Figure out 32-bit-limited starts and counts.
1555: */
1556: timecnt32 = timecnt;
1557: timei32 = 0;
1558: leapcnt32 = leapcnt;
1559: leapi32 = 0;
1560: while (timecnt32 > 0 && !is32(ats[timecnt32 - 1]))
1561: --timecnt32;
1562: while (timecnt32 > 0 && !is32(ats[timei32])) {
1563: --timecnt32;
1564: ++timei32;
1565: }
1566: while (leapcnt32 > 0 && !is32(trans[leapcnt32 - 1]))
1567: --leapcnt32;
1568: while (leapcnt32 > 0 && !is32(trans[leapi32])) {
1569: --leapcnt32;
1570: ++leapi32;
1571: }
1.1 jtc 1572: fullname = erealloc(fullname,
1573: (int) (strlen(directory) + 1 + strlen(name) + 1));
1.7 jtc 1574: (void) sprintf(fullname, "%s/%s", directory, name); /* XXX: sprintf is safe */
1575: /*
1576: ** Remove old file, if any, to snap links.
1577: */
1578: if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
1579: const char *e = strerror(errno);
1580:
1581: (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
1582: progname, fullname, e);
1.25 mlelstv 1583: exit(EXIT_FAILURE);
1.7 jtc 1584: }
1.1 jtc 1585: if ((fp = fopen(fullname, "wb")) == NULL) {
1586: if (mkdirs(fullname) != 0)
1.25 mlelstv 1587: exit(EXIT_FAILURE);
1.1 jtc 1588: if ((fp = fopen(fullname, "wb")) == NULL) {
1.5 jtc 1589: const char *e = strerror(errno);
1.7 jtc 1590:
1.5 jtc 1591: (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
1592: progname, fullname, e);
1.25 mlelstv 1593: exit(EXIT_FAILURE);
1.1 jtc 1594: }
1595: }
1.25 mlelstv 1596: for (pass = 1; pass <= 2; ++pass) {
1597: register int thistimei, thistimecnt;
1598: register int thisleapi, thisleapcnt;
1599: register int thistimelim, thisleaplim;
1600: int writetype[TZ_MAX_TIMES];
1601: int typemap[TZ_MAX_TYPES];
1602: register int thistypecnt;
1603: char thischars[TZ_MAX_CHARS];
1604: char thischarcnt;
1605: int indmap[TZ_MAX_CHARS];
1606:
1607: if (pass == 1) {
1608: thistimei = timei32;
1609: thistimecnt = timecnt32;
1610: thisleapi = leapi32;
1611: thisleapcnt = leapcnt32;
1612: } else {
1613: thistimei = 0;
1614: thistimecnt = timecnt;
1615: thisleapi = 0;
1616: thisleapcnt = leapcnt;
1617: }
1618: thistimelim = thistimei + thistimecnt;
1619: thisleaplim = thisleapi + thisleapcnt;
1620: for (i = 0; i < typecnt; ++i)
1621: writetype[i] = thistimecnt == timecnt;
1622: if (thistimecnt == 0) {
1623: /*
1624: ** No transition times fall in the current
1625: ** (32- or 64-bit) window.
1626: */
1627: if (typecnt != 0)
1628: writetype[typecnt - 1] = TRUE;
1629: } else {
1630: for (i = thistimei - 1; i < thistimelim; ++i)
1631: if (i >= 0)
1632: writetype[types[i]] = TRUE;
1633: /*
1634: ** For America/Godthab and Antarctica/Palmer
1635: */
1636: if (thistimei == 0)
1637: writetype[0] = TRUE;
1638: }
1.29 christos 1639: #ifndef LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH
1640: /*
1641: ** For some pre-2011 systems: if the last-to-be-written
1642: ** standard (or daylight) type has an offset different from the
1643: ** most recently used offset,
1644: ** append an (unused) copy of the most recently used type
1645: ** (to help get global "altzone" and "timezone" variables
1646: ** set correctly).
1647: */
1648: {
1649: register int mrudst, mrustd, hidst, histd, type;
1650:
1651: hidst = histd = mrudst = mrustd = -1;
1652: for (i = thistimei; i < thistimelim; ++i)
1653: if (isdsts[types[i]])
1654: mrudst = types[i];
1655: else mrustd = types[i];
1656: for (i = 0; i < typecnt; ++i)
1657: if (writetype[i]) {
1658: if (isdsts[i])
1659: hidst = i;
1660: else histd = i;
1661: }
1662: if (hidst >= 0 && mrudst >= 0 && hidst != mrudst &&
1663: gmtoffs[hidst] != gmtoffs[mrudst]) {
1664: isdsts[mrudst] = -1;
1665: type = addtype(gmtoffs[mrudst],
1666: &chars[abbrinds[mrudst]],
1667: TRUE,
1668: ttisstds[mrudst],
1669: ttisgmts[mrudst]);
1670: isdsts[mrudst] = TRUE;
1671: writetype[type] = TRUE;
1672: }
1673: if (histd >= 0 && mrustd >= 0 && histd != mrustd &&
1674: gmtoffs[histd] != gmtoffs[mrustd]) {
1675: isdsts[mrustd] = -1;
1676: type = addtype(gmtoffs[mrustd],
1677: &chars[abbrinds[mrustd]],
1678: FALSE,
1679: ttisstds[mrustd],
1680: ttisgmts[mrustd]);
1681: isdsts[mrustd] = FALSE;
1682: writetype[type] = TRUE;
1683: }
1684: }
1685: #endif /* !defined LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH */
1.25 mlelstv 1686: thistypecnt = 0;
1687: for (i = 0; i < typecnt; ++i)
1688: typemap[i] = writetype[i] ? thistypecnt++ : -1;
1689: for (i = 0; i < sizeof indmap / sizeof indmap[0]; ++i)
1690: indmap[i] = -1;
1691: thischarcnt = 0;
1692: for (i = 0; i < typecnt; ++i) {
1693: register char * thisabbr;
1694:
1695: if (!writetype[i])
1696: continue;
1697: if (indmap[abbrinds[i]] >= 0)
1698: continue;
1699: thisabbr = &chars[abbrinds[i]];
1700: for (j = 0; j < thischarcnt; ++j)
1701: if (strcmp(&thischars[j], thisabbr) == 0)
1702: break;
1703: if (j == thischarcnt) {
1704: (void) strcpy(&thischars[(int) thischarcnt],
1705: thisabbr);
1706: thischarcnt += strlen(thisabbr) + 1;
1707: }
1708: indmap[abbrinds[i]] = j;
1709: }
1710: #define DO(field) (void) fwrite((void *) tzh.field, \
1711: (size_t) sizeof tzh.field, (size_t) 1, fp)
1712: tzh = tzh0;
1713: (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
1714: tzh.tzh_version[0] = ZIC_VERSION;
1715: convert(eitol(thistypecnt), tzh.tzh_ttisgmtcnt);
1716: convert(eitol(thistypecnt), tzh.tzh_ttisstdcnt);
1717: convert(eitol(thisleapcnt), tzh.tzh_leapcnt);
1718: convert(eitol(thistimecnt), tzh.tzh_timecnt);
1719: convert(eitol(thistypecnt), tzh.tzh_typecnt);
1720: convert(eitol(thischarcnt), tzh.tzh_charcnt);
1721: DO(tzh_magic);
1722: DO(tzh_version);
1723: DO(tzh_reserved);
1724: DO(tzh_ttisgmtcnt);
1725: DO(tzh_ttisstdcnt);
1726: DO(tzh_leapcnt);
1727: DO(tzh_timecnt);
1728: DO(tzh_typecnt);
1729: DO(tzh_charcnt);
1.1 jtc 1730: #undef DO
1.25 mlelstv 1731: for (i = thistimei; i < thistimelim; ++i)
1732: if (pass == 1)
1733: puttzcode((long) ats[i], fp);
1734: else puttzcode64(ats[i], fp);
1735: for (i = thistimei; i < thistimelim; ++i) {
1736: unsigned char uc;
1737:
1738: uc = typemap[types[i]];
1739: (void) fwrite((void *) &uc,
1740: (size_t) sizeof uc,
1741: (size_t) 1,
1742: fp);
1743: }
1744: for (i = 0; i < typecnt; ++i)
1745: if (writetype[i]) {
1746: puttzcode(gmtoffs[i], fp);
1747: (void) putc(isdsts[i], fp);
1748: (void) putc((unsigned char) indmap[abbrinds[i]], fp);
1.1 jtc 1749: }
1.25 mlelstv 1750: if (thischarcnt != 0)
1751: (void) fwrite((void *) thischars,
1752: (size_t) sizeof thischars[0],
1753: (size_t) thischarcnt, fp);
1754: for (i = thisleapi; i < thisleaplim; ++i) {
1755: register zic_t todo;
1756:
1757: if (roll[i]) {
1758: if (timecnt == 0 || trans[i] < ats[0]) {
1759: j = 0;
1760: while (isdsts[j])
1761: if (++j >= typecnt) {
1762: j = 0;
1763: break;
1764: }
1765: } else {
1766: j = 1;
1767: while (j < timecnt &&
1768: trans[i] >= ats[j])
1769: ++j;
1770: j = types[j - 1];
1771: }
1772: todo = tadd(trans[i], -gmtoffs[j]);
1773: } else todo = trans[i];
1774: if (pass == 1)
1775: puttzcode((long) todo, fp);
1776: else puttzcode64(todo, fp);
1777: puttzcode(corr[i], fp);
1778: }
1779: for (i = 0; i < typecnt; ++i)
1780: if (writetype[i])
1781: (void) putc(ttisstds[i], fp);
1782: for (i = 0; i < typecnt; ++i)
1783: if (writetype[i])
1784: (void) putc(ttisgmts[i], fp);
1.1 jtc 1785: }
1.25 mlelstv 1786: (void) fprintf(fp, "\n%s\n", string);
1.1 jtc 1787: if (ferror(fp) || fclose(fp)) {
1.5 jtc 1788: (void) fprintf(stderr, _("%s: Error writing %s\n"),
1789: progname, fullname);
1.25 mlelstv 1790: exit(EXIT_FAILURE);
1.1 jtc 1791: }
1792: }
1793:
1794: static void
1.25 mlelstv 1795: doabbr(abbr, abbrlen, format, letters, isdst, doquotes)
1.1 jtc 1796: char * const abbr;
1.6 mrg 1797: const int abbrlen;
1.1 jtc 1798: const char * const format;
1799: const char * const letters;
1800: const int isdst;
1.25 mlelstv 1801: const int doquotes;
1.1 jtc 1802: {
1.25 mlelstv 1803: register char * cp;
1804: register char * slashp;
1805: register int len;
1806:
1807: slashp = strchr(format, '/');
1808: if (slashp == NULL) {
1.1 jtc 1809: if (letters == NULL)
1.25 mlelstv 1810: (void) strlcpy(abbr, format, abbrlen);
1811: else (void) snprintf(abbr, abbrlen, format, letters);
1812: } else if (isdst) {
1813: (void) strlcpy(abbr, slashp + 1, abbrlen);
1814: } else {
1815: if (slashp > format)
1816: (void) strncpy(abbr, format,
1817: (unsigned) (slashp - format));
1818: abbr[slashp - format] = '\0';
1819: }
1820: if (!doquotes)
1821: return;
1822: for (cp = abbr; *cp != '\0'; ++cp)
1823: if (strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZ", *cp) == NULL &&
1824: strchr("abcdefghijklmnopqrstuvwxyz", *cp) == NULL)
1825: break;
1826: len = strlen(abbr);
1827: if (len > 0 && *cp == '\0')
1828: return;
1829: abbr[len + 2] = '\0';
1830: abbr[len + 1] = '>';
1831: for ( ; len > 0; --len)
1832: abbr[len] = abbr[len - 1];
1833: abbr[0] = '<';
1834: }
1835:
1836: static void
1837: updateminmax(x)
1838: const int x;
1839: {
1840: if (min_year > x)
1841: min_year = x;
1842: if (max_year < x)
1843: max_year = x;
1844: }
1845:
1846: static int
1847: stringoffset(result, offset)
1848: char * result;
1849: long offset;
1850: {
1851: register int hours;
1852: register int minutes;
1853: register int seconds;
1854:
1855: result[0] = '\0';
1856: if (offset < 0) {
1857: (void) strcpy(result, "-");
1858: offset = -offset;
1859: }
1860: seconds = offset % SECSPERMIN;
1861: offset /= SECSPERMIN;
1862: minutes = offset % MINSPERHOUR;
1863: offset /= MINSPERHOUR;
1864: hours = offset;
1865: if (hours >= HOURSPERDAY) {
1866: result[0] = '\0';
1867: return -1;
1868: }
1869: (void) sprintf(end(result), "%d", hours);
1870: if (minutes != 0 || seconds != 0) {
1871: (void) sprintf(end(result), ":%02d", minutes);
1872: if (seconds != 0)
1873: (void) sprintf(end(result), ":%02d", seconds);
1874: }
1875: return 0;
1876: }
1877:
1878: static int
1879: stringrule(result, rp, dstoff, gmtoff)
1880: char * result;
1881: const struct rule * const rp;
1882: const long dstoff;
1883: const long gmtoff;
1884: {
1885: register long tod;
1886:
1887: result = end(result);
1888: if (rp->r_dycode == DC_DOM) {
1889: register int month, total;
1890:
1891: if (rp->r_dayofmonth == 29 && rp->r_month == TM_FEBRUARY)
1892: return -1;
1893: total = 0;
1894: for (month = 0; month < rp->r_month; ++month)
1895: total += len_months[0][month];
1896: (void) sprintf(result, "J%d", total + rp->r_dayofmonth);
1897: } else {
1898: register int week;
1899:
1900: if (rp->r_dycode == DC_DOWGEQ) {
1.29 christos 1901: if ((rp->r_dayofmonth % DAYSPERWEEK) != 1)
1902: return -1;
1.25 mlelstv 1903: week = 1 + rp->r_dayofmonth / DAYSPERWEEK;
1904: } else if (rp->r_dycode == DC_DOWLEQ) {
1905: if (rp->r_dayofmonth == len_months[1][rp->r_month])
1906: week = 5;
1907: else {
1.29 christos 1908: if ((rp->r_dayofmonth % DAYSPERWEEK) != 0)
1.25 mlelstv 1909: return -1;
1.29 christos 1910: week = rp->r_dayofmonth / DAYSPERWEEK;
1.25 mlelstv 1911: }
1912: } else return -1; /* "cannot happen" */
1913: (void) sprintf(result, "M%d.%d.%d",
1914: rp->r_month + 1, week, rp->r_wday);
1915: }
1916: tod = rp->r_tod;
1917: if (rp->r_todisgmt)
1918: tod += gmtoff;
1919: if (rp->r_todisstd && rp->r_stdoff == 0)
1920: tod += dstoff;
1921: if (tod < 0) {
1922: result[0] = '\0';
1923: return -1;
1924: }
1925: if (tod != 2 * SECSPERMIN * MINSPERHOUR) {
1926: (void) strcat(result, "/");
1927: if (stringoffset(end(result), tod) != 0)
1928: return -1;
1929: }
1930: return 0;
1931: }
1932:
1933: static void
1934: stringzone(result, resultlen, zpfirst, zonecount)
1935: char * result;
1936: const int resultlen;
1937: const struct zone * const zpfirst;
1938: const int zonecount;
1939: {
1940: register const struct zone * zp;
1941: register struct rule * rp;
1942: register struct rule * stdrp;
1943: register struct rule * dstrp;
1944: register int i;
1945: register const char * abbrvar;
1946:
1947: result[0] = '\0';
1948: zp = zpfirst + zonecount - 1;
1949: stdrp = dstrp = NULL;
1950: for (i = 0; i < zp->z_nrules; ++i) {
1951: rp = &zp->z_rules[i];
1952: if (rp->r_hiwasnum || rp->r_hiyear != INT_MAX)
1953: continue;
1954: if (rp->r_yrtype != NULL)
1955: continue;
1956: if (rp->r_stdoff == 0) {
1957: if (stdrp == NULL)
1958: stdrp = rp;
1959: else return;
1960: } else {
1961: if (dstrp == NULL)
1962: dstrp = rp;
1963: else return;
1964: }
1965: }
1966: if (stdrp == NULL && dstrp == NULL) {
1967: /*
1968: ** There are no rules running through "max".
1969: ** Let's find the latest rule.
1970: */
1971: for (i = 0; i < zp->z_nrules; ++i) {
1972: rp = &zp->z_rules[i];
1973: if (stdrp == NULL || rp->r_hiyear > stdrp->r_hiyear ||
1974: (rp->r_hiyear == stdrp->r_hiyear &&
1975: rp->r_month > stdrp->r_month))
1976: stdrp = rp;
1977: }
1978: if (stdrp != NULL && stdrp->r_stdoff != 0)
1979: return; /* We end up in DST (a POSIX no-no). */
1980: /*
1981: ** Horrid special case: if year is 2037,
1982: ** presume this is a zone handled on a year-by-year basis;
1983: ** do not try to apply a rule to the zone.
1984: */
1985: if (stdrp != NULL && stdrp->r_hiyear == 2037)
1986: return;
1987: }
1988: if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0))
1989: return;
1990: abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar;
1991: doabbr(result, resultlen, zp->z_format, abbrvar, FALSE, TRUE);
1992: if (stringoffset(end(result), -zp->z_gmtoff) != 0) {
1993: result[0] = '\0';
1994: return;
1995: }
1996: if (dstrp == NULL)
1997: return;
1998: doabbr(end(result), resultlen - strlen(result),
1999: zp->z_format, dstrp->r_abbrvar, TRUE, TRUE);
2000: if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR)
2001: if (stringoffset(end(result),
2002: -(zp->z_gmtoff + dstrp->r_stdoff)) != 0) {
2003: result[0] = '\0';
2004: return;
2005: }
2006: (void) strcat(result, ",");
2007: if (stringrule(result, dstrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
2008: result[0] = '\0';
2009: return;
2010: }
2011: (void) strcat(result, ",");
2012: if (stringrule(result, stdrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
2013: result[0] = '\0';
2014: return;
1.1 jtc 2015: }
2016: }
2017:
2018: static void
2019: outzone(zpfirst, zonecount)
2020: const struct zone * const zpfirst;
2021: const int zonecount;
2022: {
2023: register const struct zone * zp;
2024: register struct rule * rp;
2025: register int i, j;
2026: register int usestart, useuntil;
1.25 mlelstv 2027: register zic_t starttime, untiltime;
1.1 jtc 2028: register long gmtoff;
2029: register long stdoff;
2030: register int year;
2031: register long startoff;
2032: register int startttisstd;
2033: register int startttisgmt;
2034: register int type;
1.25 mlelstv 2035: register char * startbuf;
2036: register char * ab;
2037: register char * envvar;
2038: register int max_abbr_len;
2039: register int max_envvar_len;
1.29 christos 2040: register int prodstic; /* all rules are min to max */
1.25 mlelstv 2041:
2042: max_abbr_len = 2 + max_format_len + max_abbrvar_len;
2043: max_envvar_len = 2 * max_abbr_len + 5 * 9;
2044: startbuf = emalloc(max_abbr_len + 1);
2045: ab = emalloc(max_abbr_len + 1);
2046: envvar = emalloc(max_envvar_len + 1);
1.1 jtc 2047: INITIALIZE(untiltime);
2048: INITIALIZE(starttime);
2049: /*
2050: ** Now. . .finally. . .generate some useful data!
2051: */
2052: timecnt = 0;
2053: typecnt = 0;
2054: charcnt = 0;
1.29 christos 2055: prodstic = zonecount == 1;
1.1 jtc 2056: /*
1.25 mlelstv 2057: ** Thanks to Earl Chew
1.1 jtc 2058: ** for noting the need to unconditionally initialize startttisstd.
2059: */
2060: startttisstd = FALSE;
2061: startttisgmt = FALSE;
1.25 mlelstv 2062: min_year = max_year = EPOCH_YEAR;
2063: if (leapseen) {
2064: updateminmax(leapminyear);
2065: updateminmax(leapmaxyear + (leapmaxyear < INT_MAX));
2066: }
2067: for (i = 0; i < zonecount; ++i) {
2068: zp = &zpfirst[i];
2069: if (i < zonecount - 1)
2070: updateminmax(zp->z_untilrule.r_loyear);
2071: for (j = 0; j < zp->z_nrules; ++j) {
2072: rp = &zp->z_rules[j];
2073: if (rp->r_lowasnum)
2074: updateminmax(rp->r_loyear);
2075: if (rp->r_hiwasnum)
2076: updateminmax(rp->r_hiyear);
2077: }
2078: }
2079: /*
2080: ** Generate lots of data if a rule can't cover all future times.
2081: */
2082: stringzone(envvar, max_envvar_len+1, zpfirst, zonecount);
2083: if (noise && envvar[0] == '\0') {
2084: register char * wp;
2085:
2086: wp = ecpyalloc(_("no POSIX environment variable for zone"));
2087: wp = ecatalloc(wp, " ");
2088: wp = ecatalloc(wp, zpfirst->z_name);
2089: warning(wp);
2090: ifree(wp);
2091: }
2092: if (envvar[0] == '\0') {
2093: if (min_year >= INT_MIN + YEARSPERREPEAT)
2094: min_year -= YEARSPERREPEAT;
2095: else min_year = INT_MIN;
2096: if (max_year <= INT_MAX - YEARSPERREPEAT)
2097: max_year += YEARSPERREPEAT;
2098: else max_year = INT_MAX;
1.29 christos 2099: /*
2100: ** Regardless of any of the above,
2101: ** for a "proDSTic" zone which specifies that its rules
2102: ** always have and always will be in effect,
2103: ** we only need one cycle to define the zone.
2104: */
2105: if (prodstic) {
2106: min_year = 1900;
2107: max_year = min_year + YEARSPERREPEAT;
2108: }
1.25 mlelstv 2109: }
2110: /*
2111: ** For the benefit of older systems,
2112: ** generate data from 1900 through 2037.
2113: */
2114: if (min_year > 1900)
2115: min_year = 1900;
2116: if (max_year < 2037)
2117: max_year = 2037;
1.1 jtc 2118: for (i = 0; i < zonecount; ++i) {
1.19 kleink 2119: /*
2120: ** A guess that may well be corrected later.
2121: */
2122: stdoff = 0;
1.1 jtc 2123: zp = &zpfirst[i];
2124: usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
2125: useuntil = i < (zonecount - 1);
2126: if (useuntil && zp->z_untiltime <= min_time)
2127: continue;
2128: gmtoff = zp->z_gmtoff;
2129: eat(zp->z_filename, zp->z_linenum);
1.5 jtc 2130: *startbuf = '\0';
2131: startoff = zp->z_gmtoff;
1.1 jtc 2132: if (zp->z_nrules == 0) {
2133: stdoff = zp->z_stdoff;
1.25 mlelstv 2134: doabbr(startbuf, max_abbr_len + 1, zp->z_format,
2135: (char *) NULL, stdoff != 0, FALSE);
1.1 jtc 2136: type = addtype(oadd(zp->z_gmtoff, stdoff),
2137: startbuf, stdoff != 0, startttisstd,
2138: startttisgmt);
1.5 jtc 2139: if (usestart) {
1.1 jtc 2140: addtt(starttime, type);
1.5 jtc 2141: usestart = FALSE;
1.19 kleink 2142: } else if (stdoff != 0)
1.1 jtc 2143: addtt(min_time, type);
2144: } else for (year = min_year; year <= max_year; ++year) {
2145: if (useuntil && year > zp->z_untilrule.r_hiyear)
2146: break;
2147: /*
2148: ** Mark which rules to do in the current year.
2149: ** For those to do, calculate rpytime(rp, year);
2150: */
2151: for (j = 0; j < zp->z_nrules; ++j) {
2152: rp = &zp->z_rules[j];
2153: eats(zp->z_filename, zp->z_linenum,
2154: rp->r_filename, rp->r_linenum);
2155: rp->r_todo = year >= rp->r_loyear &&
2156: year <= rp->r_hiyear &&
2157: yearistype(year, rp->r_yrtype);
2158: if (rp->r_todo)
2159: rp->r_temp = rpytime(rp, year);
2160: }
2161: for ( ; ; ) {
2162: register int k;
1.25 mlelstv 2163: register zic_t jtime, ktime;
1.1 jtc 2164: register long offset;
2165:
2166: INITIALIZE(ktime);
2167: if (useuntil) {
2168: /*
1.11 jtc 2169: ** Turn untiltime into UTC
1.1 jtc 2170: ** assuming the current gmtoff and
2171: ** stdoff values.
2172: */
2173: untiltime = zp->z_untiltime;
2174: if (!zp->z_untilrule.r_todisgmt)
2175: untiltime = tadd(untiltime,
2176: -gmtoff);
2177: if (!zp->z_untilrule.r_todisstd)
2178: untiltime = tadd(untiltime,
2179: -stdoff);
2180: }
2181: /*
2182: ** Find the rule (of those to do, if any)
2183: ** that takes effect earliest in the year.
2184: */
2185: k = -1;
2186: for (j = 0; j < zp->z_nrules; ++j) {
2187: rp = &zp->z_rules[j];
2188: if (!rp->r_todo)
2189: continue;
2190: eats(zp->z_filename, zp->z_linenum,
2191: rp->r_filename, rp->r_linenum);
2192: offset = rp->r_todisgmt ? 0 : gmtoff;
2193: if (!rp->r_todisstd)
2194: offset = oadd(offset, stdoff);
2195: jtime = rp->r_temp;
2196: if (jtime == min_time ||
2197: jtime == max_time)
2198: continue;
2199: jtime = tadd(jtime, -offset);
2200: if (k < 0 || jtime < ktime) {
2201: k = j;
2202: ktime = jtime;
2203: }
2204: }
2205: if (k < 0)
2206: break; /* go on to next year */
2207: rp = &zp->z_rules[k];
2208: rp->r_todo = FALSE;
2209: if (useuntil && ktime >= untiltime)
2210: break;
1.5 jtc 2211: stdoff = rp->r_stdoff;
2212: if (usestart && ktime == starttime)
2213: usestart = FALSE;
1.1 jtc 2214: if (usestart) {
1.5 jtc 2215: if (ktime < starttime) {
2216: startoff = oadd(zp->z_gmtoff,
2217: stdoff);
1.25 mlelstv 2218: doabbr(startbuf,
2219: max_abbr_len + 1,
1.6 mrg 2220: zp->z_format,
1.5 jtc 2221: rp->r_abbrvar,
1.25 mlelstv 2222: rp->r_stdoff != 0,
2223: FALSE);
1.5 jtc 2224: continue;
2225: }
2226: if (*startbuf == '\0' &&
1.25 mlelstv 2227: startoff == oadd(zp->z_gmtoff,
2228: stdoff)) {
2229: doabbr(startbuf,
2230: max_abbr_len + 1,
2231: zp->z_format,
2232: rp->r_abbrvar,
2233: rp->r_stdoff !=
2234: 0,
2235: FALSE);
1.1 jtc 2236: }
2237: }
2238: eats(zp->z_filename, zp->z_linenum,
2239: rp->r_filename, rp->r_linenum);
1.25 mlelstv 2240: doabbr(ab, max_abbr_len+1, zp->z_format, rp->r_abbrvar,
2241: rp->r_stdoff != 0, FALSE);
1.1 jtc 2242: offset = oadd(zp->z_gmtoff, rp->r_stdoff);
1.25 mlelstv 2243: type = addtype(offset, ab, rp->r_stdoff != 0,
1.1 jtc 2244: rp->r_todisstd, rp->r_todisgmt);
2245: addtt(ktime, type);
2246: }
2247: }
1.5 jtc 2248: if (usestart) {
2249: if (*startbuf == '\0' &&
2250: zp->z_format != NULL &&
2251: strchr(zp->z_format, '%') == NULL &&
2252: strchr(zp->z_format, '/') == NULL)
1.6 mrg 2253: (void)strncpy(startbuf, zp->z_format,
1.25 mlelstv 2254: max_abbr_len + 1 - 1);
1.5 jtc 2255: eat(zp->z_filename, zp->z_linenum);
2256: if (*startbuf == '\0')
1.7 jtc 2257: error(_("can't determine time zone abbreviation to use just after until time"));
1.5 jtc 2258: else addtt(starttime,
2259: addtype(startoff, startbuf,
2260: startoff != zp->z_gmtoff,
2261: startttisstd,
2262: startttisgmt));
2263: }
1.1 jtc 2264: /*
2265: ** Now we may get to set starttime for the next zone line.
2266: */
2267: if (useuntil) {
2268: startttisstd = zp->z_untilrule.r_todisstd;
2269: startttisgmt = zp->z_untilrule.r_todisgmt;
1.5 jtc 2270: starttime = zp->z_untiltime;
1.1 jtc 2271: if (!startttisstd)
2272: starttime = tadd(starttime, -stdoff);
1.5 jtc 2273: if (!startttisgmt)
2274: starttime = tadd(starttime, -gmtoff);
1.1 jtc 2275: }
2276: }
1.25 mlelstv 2277: writezone(zpfirst->z_name, envvar);
2278: ifree(startbuf);
2279: ifree(ab);
2280: ifree(envvar);
1.1 jtc 2281: }
2282:
2283: static void
2284: addtt(starttime, type)
1.25 mlelstv 2285: const zic_t starttime;
1.7 jtc 2286: int type;
1.1 jtc 2287: {
1.7 jtc 2288: if (starttime <= min_time ||
2289: (timecnt == 1 && attypes[0].at < min_time)) {
2290: gmtoffs[0] = gmtoffs[type];
2291: isdsts[0] = isdsts[type];
2292: ttisstds[0] = ttisstds[type];
2293: ttisgmts[0] = ttisgmts[type];
2294: if (abbrinds[type] != 0)
2295: (void) strcpy(chars, &chars[abbrinds[type]]);
2296: abbrinds[0] = 0;
2297: charcnt = strlen(chars) + 1;
2298: typecnt = 1;
2299: timecnt = 0;
2300: type = 0;
2301: }
1.1 jtc 2302: if (timecnt >= TZ_MAX_TIMES) {
1.5 jtc 2303: error(_("too many transitions?!"));
1.25 mlelstv 2304: exit(EXIT_FAILURE);
1.1 jtc 2305: }
1.5 jtc 2306: attypes[timecnt].at = starttime;
2307: attypes[timecnt].type = type;
1.1 jtc 2308: ++timecnt;
2309: }
2310:
2311: static int
2312: addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)
2313: const long gmtoff;
2314: const char * const abbr;
2315: const int isdst;
2316: const int ttisstd;
2317: const int ttisgmt;
2318: {
2319: register int i, j;
2320:
1.5 jtc 2321: if (isdst != TRUE && isdst != FALSE) {
2322: error(_("internal error - addtype called with bad isdst"));
1.25 mlelstv 2323: exit(EXIT_FAILURE);
1.5 jtc 2324: }
2325: if (ttisstd != TRUE && ttisstd != FALSE) {
2326: error(_("internal error - addtype called with bad ttisstd"));
1.25 mlelstv 2327: exit(EXIT_FAILURE);
1.5 jtc 2328: }
2329: if (ttisgmt != TRUE && ttisgmt != FALSE) {
2330: error(_("internal error - addtype called with bad ttisgmt"));
1.25 mlelstv 2331: exit(EXIT_FAILURE);
1.5 jtc 2332: }
1.1 jtc 2333: /*
2334: ** See if there's already an entry for this zone type.
2335: ** If so, just return its index.
2336: */
2337: for (i = 0; i < typecnt; ++i) {
2338: if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
2339: strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
2340: ttisstd == ttisstds[i] &&
2341: ttisgmt == ttisgmts[i])
2342: return i;
2343: }
2344: /*
2345: ** There isn't one; add a new one, unless there are already too
2346: ** many.
2347: */
2348: if (typecnt >= TZ_MAX_TYPES) {
1.5 jtc 2349: error(_("too many local time types"));
1.25 mlelstv 2350: exit(EXIT_FAILURE);
2351: }
2352: if (! (-1L - 2147483647L <= gmtoff && gmtoff <= 2147483647L)) {
2353: error(_("UTC offset out of range"));
2354: exit(EXIT_FAILURE);
1.1 jtc 2355: }
2356: gmtoffs[i] = gmtoff;
2357: isdsts[i] = isdst;
2358: ttisstds[i] = ttisstd;
2359: ttisgmts[i] = ttisgmt;
2360:
2361: for (j = 0; j < charcnt; ++j)
2362: if (strcmp(&chars[j], abbr) == 0)
2363: break;
2364: if (j == charcnt)
2365: newabbr(abbr);
2366: abbrinds[i] = j;
2367: ++typecnt;
2368: return i;
2369: }
2370:
2371: static void
2372: leapadd(t, positive, rolling, count)
1.25 mlelstv 2373: const zic_t t;
1.1 jtc 2374: const int positive;
2375: const int rolling;
2376: int count;
2377: {
2378: register int i, j;
2379:
2380: if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
1.5 jtc 2381: error(_("too many leap seconds"));
1.25 mlelstv 2382: exit(EXIT_FAILURE);
1.1 jtc 2383: }
2384: for (i = 0; i < leapcnt; ++i)
2385: if (t <= trans[i]) {
2386: if (t == trans[i]) {
1.5 jtc 2387: error(_("repeated leap second moment"));
1.25 mlelstv 2388: exit(EXIT_FAILURE);
1.1 jtc 2389: }
2390: break;
2391: }
2392: do {
2393: for (j = leapcnt; j > i; --j) {
2394: trans[j] = trans[j - 1];
2395: corr[j] = corr[j - 1];
2396: roll[j] = roll[j - 1];
2397: }
2398: trans[i] = t;
2399: corr[i] = positive ? 1L : eitol(-count);
2400: roll[i] = rolling;
2401: ++leapcnt;
2402: } while (positive && --count != 0);
2403: }
2404:
2405: static void
1.25 mlelstv 2406: adjleap(void)
1.1 jtc 2407: {
2408: register int i;
2409: register long last = 0;
2410:
2411: /*
2412: ** propagate leap seconds forward
2413: */
2414: for (i = 0; i < leapcnt; ++i) {
2415: trans[i] = tadd(trans[i], last);
2416: last = corr[i] += last;
2417: }
2418: }
2419:
2420: static int
2421: yearistype(year, type)
2422: const int year;
2423: const char * const type;
2424: {
2425: static char * buf;
2426: int result;
2427:
2428: if (type == NULL || *type == '\0')
2429: return TRUE;
2430: buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
1.6 mrg 2431: (void)sprintf(buf, "%s %d %s", yitcommand, year, type); /* XXX: sprintf is safe */
1.1 jtc 2432: result = system(buf);
1.16 kleink 2433: if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
2434: case 0:
2435: return TRUE;
2436: case 1:
2437: return FALSE;
2438: }
1.5 jtc 2439: error(_("Wild result from command execution"));
2440: (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
1.1 jtc 2441: progname, buf, result);
2442: for ( ; ; )
1.25 mlelstv 2443: exit(EXIT_FAILURE);
1.1 jtc 2444: }
2445:
2446: static int
2447: lowerit(a)
1.3 jtc 2448: int a;
1.1 jtc 2449: {
1.3 jtc 2450: a = (unsigned char) a;
1.1 jtc 2451: return (isascii(a) && isupper(a)) ? tolower(a) : a;
2452: }
2453:
2454: static int
2455: ciequal(ap, bp) /* case-insensitive equality */
2456: register const char * ap;
2457: register const char * bp;
2458: {
2459: while (lowerit(*ap) == lowerit(*bp++))
2460: if (*ap++ == '\0')
2461: return TRUE;
2462: return FALSE;
2463: }
2464:
2465: static int
2466: itsabbr(abbr, word)
2467: register const char * abbr;
2468: register const char * word;
2469: {
2470: if (lowerit(*abbr) != lowerit(*word))
2471: return FALSE;
2472: ++word;
2473: while (*++abbr != '\0')
1.3 jtc 2474: do {
2475: if (*word == '\0')
2476: return FALSE;
2477: } while (lowerit(*word++) != lowerit(*abbr));
1.1 jtc 2478: return TRUE;
2479: }
2480:
2481: static const struct lookup *
2482: byword(word, table)
2483: register const char * const word;
2484: register const struct lookup * const table;
2485: {
2486: register const struct lookup * foundlp;
2487: register const struct lookup * lp;
2488:
2489: if (word == NULL || table == NULL)
2490: return NULL;
2491: /*
2492: ** Look for exact match.
2493: */
2494: for (lp = table; lp->l_word != NULL; ++lp)
2495: if (ciequal(word, lp->l_word))
2496: return lp;
2497: /*
2498: ** Look for inexact match.
2499: */
2500: foundlp = NULL;
2501: for (lp = table; lp->l_word != NULL; ++lp)
1.11 jtc 2502: if (itsabbr(word, lp->l_word)) {
1.1 jtc 2503: if (foundlp == NULL)
2504: foundlp = lp;
2505: else return NULL; /* multiple inexact matches */
1.11 jtc 2506: }
1.1 jtc 2507: return foundlp;
2508: }
2509:
2510: static char **
2511: getfields(cp)
2512: register char * cp;
2513: {
2514: register char * dp;
2515: register char ** array;
2516: register int nsubs;
2517:
2518: if (cp == NULL)
2519: return NULL;
2520: array = (char **) (void *)
2521: emalloc((int) ((strlen(cp) + 1) * sizeof *array));
2522: nsubs = 0;
2523: for ( ; ; ) {
1.25 mlelstv 2524: while (isascii((unsigned char) *cp) &&
2525: isspace((unsigned char) *cp))
2526: ++cp;
1.1 jtc 2527: if (*cp == '\0' || *cp == '#')
2528: break;
2529: array[nsubs++] = dp = cp;
2530: do {
2531: if ((*dp = *cp++) != '"')
2532: ++dp;
2533: else while ((*dp = *cp++) != '"')
2534: if (*dp != '\0')
2535: ++dp;
1.25 mlelstv 2536: else {
2537: error(_(
2538: "Odd number of quotation marks"
2539: ));
2540: exit(1);
2541: }
1.1 jtc 2542: } while (*cp != '\0' && *cp != '#' &&
1.3 jtc 2543: (!isascii(*cp) || !isspace((unsigned char) *cp)));
2544: if (isascii(*cp) && isspace((unsigned char) *cp))
1.1 jtc 2545: ++cp;
2546: *dp = '\0';
2547: }
2548: array[nsubs] = NULL;
2549: return array;
2550: }
2551:
2552: static long
2553: oadd(t1, t2)
2554: const long t1;
2555: const long t2;
2556: {
1.28 martin 2557: register long t;
2558:
2559: t = t1 + t2;
2560: if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
1.5 jtc 2561: error(_("time overflow"));
1.25 mlelstv 2562: exit(EXIT_FAILURE);
1.1 jtc 2563: }
1.28 martin 2564: return t;
1.1 jtc 2565: }
2566:
1.25 mlelstv 2567: static zic_t
1.1 jtc 2568: tadd(t1, t2)
1.25 mlelstv 2569: const zic_t t1;
1.1 jtc 2570: const long t2;
2571: {
1.28 martin 2572: register zic_t t;
2573:
1.1 jtc 2574: if (t1 == max_time && t2 > 0)
2575: return max_time;
2576: if (t1 == min_time && t2 < 0)
2577: return min_time;
1.28 martin 2578: t = t1 + t2;
2579: if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
1.5 jtc 2580: error(_("time overflow"));
1.25 mlelstv 2581: exit(EXIT_FAILURE);
1.1 jtc 2582: }
1.28 martin 2583: return t;
1.1 jtc 2584: }
2585:
2586: /*
2587: ** Given a rule, and a year, compute the date - in seconds since January 1,
2588: ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
2589: */
2590:
1.25 mlelstv 2591: static zic_t
1.1 jtc 2592: rpytime(rp, wantedy)
2593: register const struct rule * const rp;
2594: register const int wantedy;
2595: {
2596: register int y, m, i;
2597: register long dayoff; /* with a nod to Margaret O. */
1.25 mlelstv 2598: register zic_t t;
1.1 jtc 2599:
1.3 jtc 2600: if (wantedy == INT_MIN)
1.1 jtc 2601: return min_time;
1.3 jtc 2602: if (wantedy == INT_MAX)
1.1 jtc 2603: return max_time;
2604: dayoff = 0;
2605: m = TM_JANUARY;
2606: y = EPOCH_YEAR;
2607: while (wantedy != y) {
2608: if (wantedy > y) {
2609: i = len_years[isleap(y)];
2610: ++y;
2611: } else {
2612: --y;
2613: i = -len_years[isleap(y)];
2614: }
2615: dayoff = oadd(dayoff, eitol(i));
2616: }
2617: while (m != rp->r_month) {
2618: i = len_months[isleap(y)][m];
2619: dayoff = oadd(dayoff, eitol(i));
2620: ++m;
2621: }
2622: i = rp->r_dayofmonth;
2623: if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
2624: if (rp->r_dycode == DC_DOWLEQ)
2625: --i;
2626: else {
1.5 jtc 2627: error(_("use of 2/29 in non leap-year"));
1.25 mlelstv 2628: exit(EXIT_FAILURE);
1.1 jtc 2629: }
2630: }
2631: --i;
2632: dayoff = oadd(dayoff, eitol(i));
2633: if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
2634: register long wday;
2635:
2636: #define LDAYSPERWEEK ((long) DAYSPERWEEK)
2637: wday = eitol(EPOCH_WDAY);
2638: /*
2639: ** Don't trust mod of negative numbers.
2640: */
2641: if (dayoff >= 0)
2642: wday = (wday + dayoff) % LDAYSPERWEEK;
2643: else {
2644: wday -= ((-dayoff) % LDAYSPERWEEK);
2645: if (wday < 0)
2646: wday += LDAYSPERWEEK;
2647: }
2648: while (wday != eitol(rp->r_wday))
2649: if (rp->r_dycode == DC_DOWGEQ) {
2650: dayoff = oadd(dayoff, (long) 1);
2651: if (++wday >= LDAYSPERWEEK)
2652: wday = 0;
2653: ++i;
2654: } else {
2655: dayoff = oadd(dayoff, (long) -1);
2656: if (--wday < 0)
2657: wday = LDAYSPERWEEK - 1;
2658: --i;
2659: }
2660: if (i < 0 || i >= len_months[isleap(y)][m]) {
1.23 kleink 2661: if (noise)
1.25 mlelstv 2662: warning(_("rule goes past start/end of month--\
2663: will not work with pre-2004 versions of zic"));
1.1 jtc 2664: }
2665: }
1.20 kleink 2666: if (dayoff < min_time / SECSPERDAY)
2667: return min_time;
2668: if (dayoff > max_time / SECSPERDAY)
2669: return max_time;
1.25 mlelstv 2670: t = (zic_t) dayoff * SECSPERDAY;
1.1 jtc 2671: return tadd(t, rp->r_tod);
2672: }
2673:
2674: static void
2675: newabbr(string)
2676: const char * const string;
2677: {
2678: register int i;
2679:
1.25 mlelstv 2680: if (strcmp(string, GRANDPARENTED) != 0) {
2681: register const char * cp;
2682: register char * wp;
2683:
2684: /*
2685: ** Want one to ZIC_MAX_ABBR_LEN_WO_WARN alphabetics
2686: ** optionally followed by a + or - and a number from 1 to 14.
2687: */
2688: cp = string;
2689: wp = NULL;
2690: while (isascii((unsigned char) *cp) &&
2691: isalpha((unsigned char) *cp))
2692: ++cp;
2693: if (cp - string == 0)
2694: wp = _("time zone abbreviation lacks alphabetic at start");
2695: if (noise && cp - string > 3)
2696: wp = _("time zone abbreviation has more than 3 alphabetics");
2697: if (cp - string > ZIC_MAX_ABBR_LEN_WO_WARN)
2698: wp = _("time zone abbreviation has too many alphabetics");
2699: if (wp == NULL && (*cp == '+' || *cp == '-')) {
2700: ++cp;
2701: if (isascii((unsigned char) *cp) &&
2702: isdigit((unsigned char) *cp))
2703: if (*cp++ == '1' &&
2704: *cp >= '0' && *cp <= '4')
2705: ++cp;
2706: }
2707: if (*cp != '\0')
2708: wp = _("time zone abbreviation differs from POSIX standard");
2709: if (wp != NULL) {
2710: wp = ecpyalloc(wp);
2711: wp = ecatalloc(wp, " (");
2712: wp = ecatalloc(wp, string);
2713: wp = ecatalloc(wp, ")");
2714: warning(wp);
2715: ifree(wp);
2716: }
2717: }
1.1 jtc 2718: i = strlen(string) + 1;
2719: if (charcnt + i > TZ_MAX_CHARS) {
1.5 jtc 2720: error(_("too many, or too long, time zone abbreviations"));
1.25 mlelstv 2721: exit(EXIT_FAILURE);
1.1 jtc 2722: }
1.6 mrg 2723: (void)strncpy(&chars[charcnt], string, sizeof(chars) - charcnt - 1);
1.1 jtc 2724: charcnt += eitol(i);
2725: }
2726:
2727: static int
2728: mkdirs(argname)
1.25 mlelstv 2729: char * argname;
1.1 jtc 2730: {
2731: register char * name;
2732: register char * cp;
2733:
2734: if (argname == NULL || *argname == '\0')
2735: return 0;
2736: cp = name = ecpyalloc(argname);
2737: while ((cp = strchr(cp + 1, '/')) != 0) {
2738: *cp = '\0';
1.13 kleink 2739: #ifndef __NetBSD__
1.1 jtc 2740: /*
2741: ** DOS drive specifier?
2742: */
1.3 jtc 2743: if (isalpha((unsigned char) name[0]) &&
1.4 jtc 2744: name[1] == ':' && name[2] == '\0') {
1.1 jtc 2745: *cp = '/';
2746: continue;
2747: }
1.13 kleink 2748: #endif /* !defined __NetBSD__ */
1.1 jtc 2749: if (!itsdir(name)) {
2750: /*
2751: ** It doesn't seem to exist, so we try to create it.
1.7 jtc 2752: ** Creation may fail because of the directory being
2753: ** created by some other multiprocessor, so we get
2754: ** to do extra checking.
1.1 jtc 2755: */
1.19 kleink 2756: if (mkdir(name, MKDIR_UMASK) != 0) {
1.5 jtc 2757: const char *e = strerror(errno);
1.7 jtc 2758:
2759: if (errno != EEXIST || !itsdir(name)) {
2760: (void) fprintf(stderr,
2761: _("%s: Can't create directory %s: %s\n"),
2762: progname, name, e);
2763: ifree(name);
2764: return -1;
2765: }
1.1 jtc 2766: }
2767: }
2768: *cp = '/';
2769: }
2770: ifree(name);
2771: return 0;
2772: }
2773:
2774: static long
2775: eitol(i)
2776: const int i;
2777: {
2778: long l;
2779:
2780: l = i;
2781: if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
2782: (void) fprintf(stderr,
1.5 jtc 2783: _("%s: %d did not sign extend correctly\n"),
1.1 jtc 2784: progname, i);
1.25 mlelstv 2785: exit(EXIT_FAILURE);
1.1 jtc 2786: }
2787: return l;
2788: }
2789:
2790: /*
1.21 kleink 2791: ** UNIX was a registered trademark of The Open Group in 2003.
1.1 jtc 2792: */