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1.33 martin 1: /* $NetBSD: zic.c,v 1.32 2012/10/24 00:30:52 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
1.33 martin 13: __RCSID("$NetBSD: zic.c,v 1.32 2012/10/24 00:30:52 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 void dolink(const char * fromfield, const char * tofield);
126: static long eitol(int i);
127: static char ** getfields(char * buf);
128: static long gethms(const char * string, const char * errstrng,
129: int signable);
130: static void infile(const char * filename);
131: static void inleap(char ** fields, int nfields);
132: static void inlink(char ** fields, int nfields);
133: static void inrule(char ** fields, int nfields);
134: static int inzcont(char ** fields, int nfields);
135: static int inzone(char ** fields, int nfields);
136: static int inzsub(char ** fields, int nfields, int iscont);
137: static int itsdir(const char * name);
138: static int lowerit(int c);
139: int main(int, char **);
140: static int mkdirs(char * filename);
141: static void newabbr(const char * abbr);
142: static long oadd(long t1, long t2);
143: static void outzone(const struct zone * zp, int ntzones);
144: static int rcomp(const void * leftp, const void * rightp);
145: static zic_t rpytime(const struct rule * rp, int wantedy);
146: static void rulesub(struct rule * rp,
1.1 jtc 147: const char * loyearp, const char * hiyearp,
148: const char * typep, const char * monthp,
1.25 mlelstv 149: const char * dayp, const char * timep);
150: static zic_t tadd(zic_t t1, long t2);
151: static int yearistype(int year, const char * type);
152: static int atcomp(const void *avp, const void *bvp);
153: static void updateminmax(int x);
1.5 jtc 154:
1.1 jtc 155: static int charcnt;
156: static int errors;
157: static const char * filename;
158: static int leapcnt;
1.25 mlelstv 159: static int leapseen;
160: static int leapminyear;
161: static int leapmaxyear;
1.1 jtc 162: static int linenum;
1.25 mlelstv 163: static int max_abbrvar_len;
164: static int max_format_len;
1.1 jtc 165: static int max_year;
166: static int min_year;
167: static int noise;
168: static const char * rfilename;
169: static int rlinenum;
170: static const char * progname;
171: static int timecnt;
172: static int typecnt;
173:
174: /*
175: ** Line codes.
176: */
177:
178: #define LC_RULE 0
179: #define LC_ZONE 1
180: #define LC_LINK 2
181: #define LC_LEAP 3
182:
183: /*
184: ** Which fields are which on a Zone line.
185: */
186:
187: #define ZF_NAME 1
188: #define ZF_GMTOFF 2
189: #define ZF_RULE 3
190: #define ZF_FORMAT 4
191: #define ZF_TILYEAR 5
192: #define ZF_TILMONTH 6
193: #define ZF_TILDAY 7
194: #define ZF_TILTIME 8
195: #define ZONE_MINFIELDS 5
196: #define ZONE_MAXFIELDS 9
197:
198: /*
199: ** Which fields are which on a Zone continuation line.
200: */
201:
202: #define ZFC_GMTOFF 0
203: #define ZFC_RULE 1
204: #define ZFC_FORMAT 2
205: #define ZFC_TILYEAR 3
206: #define ZFC_TILMONTH 4
207: #define ZFC_TILDAY 5
208: #define ZFC_TILTIME 6
209: #define ZONEC_MINFIELDS 3
210: #define ZONEC_MAXFIELDS 7
211:
212: /*
213: ** Which files are which on a Rule line.
214: */
215:
216: #define RF_NAME 1
217: #define RF_LOYEAR 2
218: #define RF_HIYEAR 3
219: #define RF_COMMAND 4
220: #define RF_MONTH 5
221: #define RF_DAY 6
222: #define RF_TOD 7
223: #define RF_STDOFF 8
224: #define RF_ABBRVAR 9
225: #define RULE_FIELDS 10
226:
227: /*
228: ** Which fields are which on a Link line.
229: */
230:
231: #define LF_FROM 1
232: #define LF_TO 2
233: #define LINK_FIELDS 3
234:
235: /*
236: ** Which fields are which on a Leap line.
237: */
238:
239: #define LP_YEAR 1
240: #define LP_MONTH 2
241: #define LP_DAY 3
242: #define LP_TIME 4
243: #define LP_CORR 5
244: #define LP_ROLL 6
245: #define LEAP_FIELDS 7
246:
247: /*
248: ** Year synonyms.
249: */
250:
251: #define YR_MINIMUM 0
252: #define YR_MAXIMUM 1
253: #define YR_ONLY 2
254:
255: static struct rule * rules;
256: static int nrules; /* number of rules */
257:
258: static struct zone * zones;
259: static int nzones; /* number of zones */
260:
261: struct link {
262: const char * l_filename;
263: int l_linenum;
264: const char * l_from;
265: const char * l_to;
266: };
267:
268: static struct link * links;
269: static int nlinks;
270:
271: struct lookup {
272: const char * l_word;
273: const int l_value;
274: };
275:
1.25 mlelstv 276: static struct lookup const * byword(const char * string,
277: const struct lookup * lp);
1.1 jtc 278:
279: static struct lookup const line_codes[] = {
280: { "Rule", LC_RULE },
281: { "Zone", LC_ZONE },
282: { "Link", LC_LINK },
283: { "Leap", LC_LEAP },
284: { NULL, 0}
285: };
286:
287: static struct lookup const mon_names[] = {
288: { "January", TM_JANUARY },
289: { "February", TM_FEBRUARY },
290: { "March", TM_MARCH },
291: { "April", TM_APRIL },
292: { "May", TM_MAY },
293: { "June", TM_JUNE },
294: { "July", TM_JULY },
295: { "August", TM_AUGUST },
296: { "September", TM_SEPTEMBER },
297: { "October", TM_OCTOBER },
298: { "November", TM_NOVEMBER },
299: { "December", TM_DECEMBER },
300: { NULL, 0 }
301: };
302:
303: static struct lookup const wday_names[] = {
304: { "Sunday", TM_SUNDAY },
305: { "Monday", TM_MONDAY },
306: { "Tuesday", TM_TUESDAY },
307: { "Wednesday", TM_WEDNESDAY },
308: { "Thursday", TM_THURSDAY },
309: { "Friday", TM_FRIDAY },
310: { "Saturday", TM_SATURDAY },
311: { NULL, 0 }
312: };
313:
314: static struct lookup const lasts[] = {
315: { "last-Sunday", TM_SUNDAY },
316: { "last-Monday", TM_MONDAY },
317: { "last-Tuesday", TM_TUESDAY },
318: { "last-Wednesday", TM_WEDNESDAY },
319: { "last-Thursday", TM_THURSDAY },
320: { "last-Friday", TM_FRIDAY },
321: { "last-Saturday", TM_SATURDAY },
322: { NULL, 0 }
323: };
324:
325: static struct lookup const begin_years[] = {
326: { "minimum", YR_MINIMUM },
327: { "maximum", YR_MAXIMUM },
328: { NULL, 0 }
329: };
330:
331: static struct lookup const end_years[] = {
332: { "minimum", YR_MINIMUM },
333: { "maximum", YR_MAXIMUM },
334: { "only", YR_ONLY },
335: { NULL, 0 }
336: };
337:
338: static struct lookup const leap_types[] = {
339: { "Rolling", TRUE },
340: { "Stationary", FALSE },
341: { NULL, 0 }
342: };
343:
344: static const int len_months[2][MONSPERYEAR] = {
345: { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
346: { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
347: };
348:
349: static const int len_years[2] = {
350: DAYSPERNYEAR, DAYSPERLYEAR
351: };
352:
1.5 jtc 353: static struct attype {
1.25 mlelstv 354: zic_t at;
1.5 jtc 355: unsigned char type;
356: } attypes[TZ_MAX_TIMES];
1.1 jtc 357: static long gmtoffs[TZ_MAX_TYPES];
358: static char isdsts[TZ_MAX_TYPES];
359: static unsigned char abbrinds[TZ_MAX_TYPES];
360: static char ttisstds[TZ_MAX_TYPES];
361: static char ttisgmts[TZ_MAX_TYPES];
362: static char chars[TZ_MAX_CHARS];
1.25 mlelstv 363: static zic_t trans[TZ_MAX_LEAPS];
1.1 jtc 364: static long corr[TZ_MAX_LEAPS];
365: static char roll[TZ_MAX_LEAPS];
366:
367: /*
368: ** Memory allocation.
369: */
370:
1.31 christos 371: static __pure void *
372: memcheck(void *const ptr)
1.1 jtc 373: {
374: if (ptr == NULL) {
1.5 jtc 375: const char *e = strerror(errno);
1.7 jtc 376:
1.5 jtc 377: (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
378: progname, e);
1.25 mlelstv 379: exit(EXIT_FAILURE);
1.1 jtc 380: }
381: return ptr;
382: }
383:
1.31 christos 384: #define emalloc(size) memcheck(malloc(size))
385: #define erealloc(ptr, size) memcheck(realloc((ptr), (size)))
1.1 jtc 386: #define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
387: #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
388:
389: /*
390: ** Error handling.
391: */
392:
393: static void
1.31 christos 394: eats(const char *const name, const int num, const char *const rname,
395: const int rnum)
1.1 jtc 396: {
397: filename = name;
398: linenum = num;
399: rfilename = rname;
400: rlinenum = rnum;
401: }
402:
403: static void
1.31 christos 404: eat(const char *const name, const int num)
1.1 jtc 405: {
1.31 christos 406: eats(name, num, NULL, -1);
1.1 jtc 407: }
408:
409: static void
1.31 christos 410: error(const char *const string)
1.1 jtc 411: {
412: /*
413: ** Match the format of "cc" to allow sh users to
414: ** zic ... 2>&1 | error -t "*" -v
415: ** on BSD systems.
416: */
1.5 jtc 417: (void) fprintf(stderr, _("\"%s\", line %d: %s"),
1.1 jtc 418: filename, linenum, string);
419: if (rfilename != NULL)
1.5 jtc 420: (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"),
1.1 jtc 421: rfilename, rlinenum);
422: (void) fprintf(stderr, "\n");
423: ++errors;
424: }
425:
426: static void
1.31 christos 427: warning(const char *const string)
1.5 jtc 428: {
429: char * cp;
430:
1.15 kleink 431: cp = ecpyalloc(_("warning: "));
1.5 jtc 432: cp = ecatalloc(cp, string);
1.7 jtc 433: error(cp);
1.31 christos 434: free(cp);
1.5 jtc 435: --errors;
436: }
437:
438: static void
1.25 mlelstv 439: usage(FILE *stream, int status)
1.1 jtc 440: {
1.25 mlelstv 441: (void) fprintf(stream, _("%s: usage is %s \
442: [ --version ] [ --help ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\
443: \t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n\
444: \n\
445: Report bugs to tz@elsie.nci.nih.gov.\n"),
446: progname, progname);
447: exit(status);
1.1 jtc 448: }
449:
450: static const char * psxrules;
451: static const char * lcltime;
452: static const char * directory;
453: static const char * leapsec;
454: static const char * yitcommand;
455:
456: int
1.31 christos 457: main(int argc, char *argv[])
458: {
459: int i;
460: int j;
461: int c;
1.1 jtc 462:
1.13 kleink 463: #ifdef _POSIX_VERSION
1.1 jtc 464: (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
1.13 kleink 465: #endif /* defined _POSIX_VERSION */
1.5 jtc 466: #if HAVE_GETTEXT - 0
467: (void) setlocale(LC_MESSAGES, "");
468: #ifdef TZ_DOMAINDIR
469: (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
470: #endif /* defined TEXTDOMAINDIR */
471: (void) textdomain(TZ_DOMAIN);
1.25 mlelstv 472: #endif /* HAVE_GETTEXT */
1.1 jtc 473: progname = argv[0];
1.25 mlelstv 474: if (TYPE_BIT(zic_t) < 64) {
475: (void) fprintf(stderr, "%s: %s\n", progname,
476: _("wild compilation-time specification of zic_t"));
477: exit(EXIT_FAILURE);
478: }
1.20 kleink 479: for (i = 1; i < argc; ++i)
480: if (strcmp(argv[i], "--version") == 0) {
1.30 christos 481: (void) printf("%s\n", TZVERSION);
1.25 mlelstv 482: exit(EXIT_SUCCESS);
483: } else if (strcmp(argv[i], "--help") == 0) {
484: usage(stdout, EXIT_SUCCESS);
1.20 kleink 485: }
1.7 jtc 486: while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
1.1 jtc 487: switch (c) {
488: default:
1.25 mlelstv 489: usage(stderr, EXIT_FAILURE);
1.1 jtc 490: case 'd':
491: if (directory == NULL)
492: directory = optarg;
493: else {
494: (void) fprintf(stderr,
1.5 jtc 495: _("%s: More than one -d option specified\n"),
1.1 jtc 496: progname);
1.25 mlelstv 497: exit(EXIT_FAILURE);
1.1 jtc 498: }
499: break;
500: case 'l':
501: if (lcltime == NULL)
502: lcltime = optarg;
503: else {
504: (void) fprintf(stderr,
1.5 jtc 505: _("%s: More than one -l option specified\n"),
1.1 jtc 506: progname);
1.25 mlelstv 507: exit(EXIT_FAILURE);
1.1 jtc 508: }
509: break;
510: case 'p':
511: if (psxrules == NULL)
512: psxrules = optarg;
513: else {
514: (void) fprintf(stderr,
1.5 jtc 515: _("%s: More than one -p option specified\n"),
1.1 jtc 516: progname);
1.25 mlelstv 517: exit(EXIT_FAILURE);
1.1 jtc 518: }
519: break;
520: case 'y':
521: if (yitcommand == NULL)
522: yitcommand = optarg;
523: else {
524: (void) fprintf(stderr,
1.5 jtc 525: _("%s: More than one -y option specified\n"),
1.1 jtc 526: progname);
1.25 mlelstv 527: exit(EXIT_FAILURE);
1.1 jtc 528: }
529: break;
530: case 'L':
531: if (leapsec == NULL)
532: leapsec = optarg;
533: else {
534: (void) fprintf(stderr,
1.5 jtc 535: _("%s: More than one -L option specified\n"),
1.1 jtc 536: progname);
1.25 mlelstv 537: exit(EXIT_FAILURE);
1.1 jtc 538: }
539: break;
540: case 'v':
541: noise = TRUE;
542: break;
543: case 's':
1.25 mlelstv 544: (void) printf("%s: -s ignored\n", progname);
1.1 jtc 545: break;
546: }
547: if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
1.25 mlelstv 548: usage(stderr, EXIT_FAILURE); /* usage message by request */
1.1 jtc 549: if (directory == NULL)
550: directory = TZDIR;
551: if (yitcommand == NULL)
552: yitcommand = "yearistype";
553:
554: if (optind < argc && leapsec != NULL) {
555: infile(leapsec);
556: adjleap();
557: }
558:
559: for (i = optind; i < argc; ++i)
560: infile(argv[i]);
561: if (errors)
1.25 mlelstv 562: exit(EXIT_FAILURE);
1.1 jtc 563: associate();
564: for (i = 0; i < nzones; i = j) {
565: /*
566: ** Find the next non-continuation zone entry.
567: */
568: for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
569: continue;
570: outzone(&zones[i], j - i);
571: }
572: /*
573: ** Make links.
574: */
1.15 kleink 575: for (i = 0; i < nlinks; ++i) {
576: eat(links[i].l_filename, links[i].l_linenum);
1.1 jtc 577: dolink(links[i].l_from, links[i].l_to);
1.25 mlelstv 578: if (noise)
579: for (j = 0; j < nlinks; ++j)
580: if (strcmp(links[i].l_to,
581: links[j].l_from) == 0)
582: warning(_("link to link"));
1.15 kleink 583: }
584: if (lcltime != NULL) {
585: eat("command line", 1);
1.1 jtc 586: dolink(lcltime, TZDEFAULT);
1.15 kleink 587: }
588: if (psxrules != NULL) {
589: eat("command line", 1);
1.1 jtc 590: dolink(psxrules, TZDEFRULES);
1.15 kleink 591: }
1.1 jtc 592: return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
593: }
594:
595: static void
1.31 christos 596: dolink(const char *const fromfield, const char *const tofield)
1.1 jtc 597: {
1.31 christos 598: char * fromname;
599: char * toname;
1.1 jtc 600:
1.25 mlelstv 601: if (fromfield[0] == '/')
602: fromname = ecpyalloc(fromfield);
1.1 jtc 603: else {
604: fromname = ecpyalloc(directory);
605: fromname = ecatalloc(fromname, "/");
1.25 mlelstv 606: fromname = ecatalloc(fromname, fromfield);
1.1 jtc 607: }
1.25 mlelstv 608: if (tofield[0] == '/')
609: toname = ecpyalloc(tofield);
1.1 jtc 610: else {
611: toname = ecpyalloc(directory);
612: toname = ecatalloc(toname, "/");
1.25 mlelstv 613: toname = ecatalloc(toname, tofield);
1.1 jtc 614: }
615: /*
616: ** We get to be careful here since
617: ** there's a fair chance of root running us.
618: */
619: if (!itsdir(toname))
620: (void) remove(toname);
621: if (link(fromname, toname) != 0) {
1.12 kleink 622: int result;
623:
1.1 jtc 624: if (mkdirs(toname) != 0)
1.25 mlelstv 625: exit(EXIT_FAILURE);
1.15 kleink 626:
1.12 kleink 627: result = link(fromname, toname);
1.25 mlelstv 628: #if HAVE_SYMLINK
1.20 kleink 629: if (result != 0 &&
1.25 mlelstv 630: access(fromname, F_OK) == 0 &&
631: !itsdir(fromname)) {
632: const char *s = tofield;
1.31 christos 633: char * symlinkcontents = NULL;
1.25 mlelstv 634:
635: while ((s = strchr(s+1, '/')) != NULL)
636: symlinkcontents =
637: ecatalloc(symlinkcontents,
638: "../");
639: symlinkcontents =
640: ecatalloc(symlinkcontents,
641: fromname);
642: result = symlink(symlinkcontents,
643: toname);
644: if (result == 0)
1.12 kleink 645: warning(_("hard link failed, symbolic link used"));
1.31 christos 646: free(symlinkcontents);
1.12 kleink 647: }
1.25 mlelstv 648: #endif /* HAVE_SYMLINK */
1.12 kleink 649: if (result != 0) {
1.5 jtc 650: const char *e = strerror(errno);
1.7 jtc 651:
1.5 jtc 652: (void) fprintf(stderr,
653: _("%s: Can't link from %s to %s: %s\n"),
654: progname, fromname, toname, e);
1.25 mlelstv 655: exit(EXIT_FAILURE);
1.1 jtc 656: }
657: }
1.31 christos 658: free(fromname);
659: free(toname);
1.1 jtc 660: }
661:
1.25 mlelstv 662: #define TIME_T_BITS_IN_FILE 64
1.31 christos 663: static const zic_t min_time = (zic_t) -1 << (TIME_T_BITS_IN_FILE - 1);
664: static const zic_t max_time = -1 - ((zic_t) -1 << (TIME_T_BITS_IN_FILE - 1));
1.1 jtc 665:
666: static int
1.31 christos 667: itsdir(const char *const name)
1.1 jtc 668: {
1.31 christos 669: char * myname;
670: int accres;
1.1 jtc 671:
672: myname = ecpyalloc(name);
673: myname = ecatalloc(myname, "/.");
674: accres = access(myname, F_OK);
1.31 christos 675: free(myname);
1.1 jtc 676: return accres == 0;
677: }
678:
679: /*
680: ** Associate sets of rules with zones.
681: */
682:
683: /*
684: ** Sort by rule name.
685: */
686:
687: static int
1.31 christos 688: rcomp(const void *cp1, const void *cp2)
1.1 jtc 689: {
690: return strcmp(((const struct rule *) cp1)->r_name,
691: ((const struct rule *) cp2)->r_name);
692: }
693:
694: static void
1.25 mlelstv 695: associate(void)
1.1 jtc 696: {
1.31 christos 697: struct zone * zp;
698: struct rule * rp;
699: int base, out;
700: int i, j;
1.1 jtc 701:
1.5 jtc 702: if (nrules != 0) {
1.31 christos 703: (void) qsort(rules, (size_t)nrules, sizeof *rules, rcomp);
1.5 jtc 704: for (i = 0; i < nrules - 1; ++i) {
705: if (strcmp(rules[i].r_name,
706: rules[i + 1].r_name) != 0)
707: continue;
708: if (strcmp(rules[i].r_filename,
709: rules[i + 1].r_filename) == 0)
710: continue;
711: eat(rules[i].r_filename, rules[i].r_linenum);
712: warning(_("same rule name in multiple files"));
713: eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
714: warning(_("same rule name in multiple files"));
715: for (j = i + 2; j < nrules; ++j) {
716: if (strcmp(rules[i].r_name,
717: rules[j].r_name) != 0)
718: break;
719: if (strcmp(rules[i].r_filename,
720: rules[j].r_filename) == 0)
721: continue;
722: if (strcmp(rules[i + 1].r_filename,
723: rules[j].r_filename) == 0)
724: continue;
725: break;
726: }
727: i = j - 1;
728: }
729: }
1.1 jtc 730: for (i = 0; i < nzones; ++i) {
731: zp = &zones[i];
732: zp->z_rules = NULL;
733: zp->z_nrules = 0;
734: }
735: for (base = 0; base < nrules; base = out) {
736: rp = &rules[base];
737: for (out = base + 1; out < nrules; ++out)
738: if (strcmp(rp->r_name, rules[out].r_name) != 0)
739: break;
740: for (i = 0; i < nzones; ++i) {
741: zp = &zones[i];
742: if (strcmp(zp->z_rule, rp->r_name) != 0)
743: continue;
744: zp->z_rules = rp;
745: zp->z_nrules = out - base;
746: }
747: }
748: for (i = 0; i < nzones; ++i) {
749: zp = &zones[i];
750: if (zp->z_nrules == 0) {
751: /*
752: ** Maybe we have a local standard time offset.
753: */
754: eat(zp->z_filename, zp->z_linenum);
1.5 jtc 755: zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
1.25 mlelstv 756: TRUE);
1.1 jtc 757: /*
758: ** Note, though, that if there's no rule,
759: ** a '%s' in the format is a bad thing.
760: */
761: if (strchr(zp->z_format, '%') != 0)
1.5 jtc 762: error(_("%s in ruleless zone"));
1.1 jtc 763: }
764: }
765: if (errors)
1.25 mlelstv 766: exit(EXIT_FAILURE);
1.1 jtc 767: }
768:
769: static void
1.31 christos 770: infile(const char *name)
1.1 jtc 771: {
1.31 christos 772: FILE * fp;
773: char ** fields;
774: char * cp;
775: const struct lookup * lp;
776: int nfields;
777: int wantcont;
778: int num;
1.1 jtc 779: char buf[BUFSIZ];
780:
781: if (strcmp(name, "-") == 0) {
1.5 jtc 782: name = _("standard input");
1.1 jtc 783: fp = stdin;
784: } else if ((fp = fopen(name, "r")) == NULL) {
1.5 jtc 785: const char *e = strerror(errno);
1.7 jtc 786:
1.5 jtc 787: (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
788: progname, name, e);
1.25 mlelstv 789: exit(EXIT_FAILURE);
1.1 jtc 790: }
791: wantcont = FALSE;
792: for (num = 1; ; ++num) {
793: eat(name, num);
794: if (fgets(buf, (int) sizeof buf, fp) != buf)
795: break;
796: cp = strchr(buf, '\n');
797: if (cp == NULL) {
1.5 jtc 798: error(_("line too long"));
1.25 mlelstv 799: exit(EXIT_FAILURE);
1.1 jtc 800: }
801: *cp = '\0';
802: fields = getfields(buf);
803: nfields = 0;
804: while (fields[nfields] != NULL) {
805: static char nada;
806:
1.3 jtc 807: if (strcmp(fields[nfields], "-") == 0)
1.1 jtc 808: fields[nfields] = &nada;
809: ++nfields;
810: }
811: if (nfields == 0) {
812: /* nothing to do */
813: } else if (wantcont) {
814: wantcont = inzcont(fields, nfields);
815: } else {
816: lp = byword(fields[0], line_codes);
817: if (lp == NULL)
1.5 jtc 818: error(_("input line of unknown type"));
1.1 jtc 819: else switch ((int) (lp->l_value)) {
820: case LC_RULE:
821: inrule(fields, nfields);
822: wantcont = FALSE;
823: break;
824: case LC_ZONE:
825: wantcont = inzone(fields, nfields);
826: break;
827: case LC_LINK:
828: inlink(fields, nfields);
829: wantcont = FALSE;
830: break;
831: case LC_LEAP:
832: if (name != leapsec)
833: (void) fprintf(stderr,
1.5 jtc 834: _("%s: Leap line in non leap seconds file %s\n"),
1.1 jtc 835: progname, name);
836: else inleap(fields, nfields);
837: wantcont = FALSE;
838: break;
839: default: /* "cannot happen" */
840: (void) fprintf(stderr,
1.5 jtc 841: _("%s: panic: Invalid l_value %d\n"),
1.1 jtc 842: progname, lp->l_value);
1.25 mlelstv 843: exit(EXIT_FAILURE);
1.1 jtc 844: }
845: }
1.31 christos 846: free(fields);
1.1 jtc 847: }
848: if (ferror(fp)) {
1.5 jtc 849: (void) fprintf(stderr, _("%s: Error reading %s\n"),
850: progname, filename);
1.25 mlelstv 851: exit(EXIT_FAILURE);
1.1 jtc 852: }
853: if (fp != stdin && fclose(fp)) {
1.5 jtc 854: const char *e = strerror(errno);
1.7 jtc 855:
1.5 jtc 856: (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
857: progname, filename, e);
1.25 mlelstv 858: exit(EXIT_FAILURE);
1.1 jtc 859: }
860: if (wantcont)
1.5 jtc 861: error(_("expected continuation line not found"));
1.1 jtc 862: }
863:
864: /*
865: ** Convert a string of one of the forms
866: ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
867: ** into a number of seconds.
868: ** A null string maps to zero.
869: ** Call error with errstring and return zero on errors.
870: */
871:
872: static long
1.31 christos 873: gethms(const char *string, const char *const errstring, const int signable)
1.1 jtc 874: {
1.25 mlelstv 875: long hh;
876: int mm, ss, sign;
1.1 jtc 877:
878: if (string == NULL || *string == '\0')
879: return 0;
880: if (!signable)
881: sign = 1;
882: else if (*string == '-') {
883: sign = -1;
884: ++string;
885: } else sign = 1;
1.25 mlelstv 886: if (sscanf(string, scheck(string, "%ld"), &hh) == 1)
1.1 jtc 887: mm = ss = 0;
1.25 mlelstv 888: else if (sscanf(string, scheck(string, "%ld:%d"), &hh, &mm) == 2)
1.1 jtc 889: ss = 0;
1.25 mlelstv 890: else if (sscanf(string, scheck(string, "%ld:%d:%d"),
1.1 jtc 891: &hh, &mm, &ss) != 3) {
892: error(errstring);
893: return 0;
894: }
1.25 mlelstv 895: if (hh < 0 ||
1.1 jtc 896: mm < 0 || mm >= MINSPERHOUR ||
1.25 mlelstv 897: ss < 0 || ss > SECSPERMIN) {
1.1 jtc 898: error(errstring);
899: return 0;
900: }
1.25 mlelstv 901: if (LONG_MAX / SECSPERHOUR < hh) {
902: error(_("time overflow"));
903: return 0;
904: }
905: if (noise && hh == HOURSPERDAY && mm == 0 && ss == 0)
1.21 kleink 906: warning(_("24:00 not handled by pre-1998 versions of zic"));
1.25 mlelstv 907: if (noise && (hh > HOURSPERDAY ||
908: (hh == HOURSPERDAY && (mm != 0 || ss != 0))))
909: warning(_("values over 24 hours not handled by pre-2007 versions of zic"));
910: return oadd(eitol(sign) * hh * eitol(SECSPERHOUR),
911: eitol(sign) * (eitol(mm) * eitol(SECSPERMIN) + eitol(ss)));
1.1 jtc 912: }
913:
914: static void
1.31 christos 915: inrule(char **const fields, const int nfields)
1.1 jtc 916: {
917: static struct rule r;
918:
919: if (nfields != RULE_FIELDS) {
1.5 jtc 920: error(_("wrong number of fields on Rule line"));
1.1 jtc 921: return;
922: }
923: if (*fields[RF_NAME] == '\0') {
1.5 jtc 924: error(_("nameless rule"));
1.1 jtc 925: return;
926: }
927: r.r_filename = filename;
928: r.r_linenum = linenum;
1.5 jtc 929: r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
1.1 jtc 930: rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
931: fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
932: r.r_name = ecpyalloc(fields[RF_NAME]);
933: r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
1.25 mlelstv 934: if (max_abbrvar_len < strlen(r.r_abbrvar))
935: max_abbrvar_len = strlen(r.r_abbrvar);
1.31 christos 936: rules = erealloc(rules, (nrules + 1) * sizeof *rules);
1.1 jtc 937: rules[nrules++] = r;
938: }
939:
940: static int
1.31 christos 941: inzone(char **const fields, const int nfields)
1.1 jtc 942: {
1.31 christos 943: int i;
1.1 jtc 944: static char * buf;
945:
946: if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
1.5 jtc 947: error(_("wrong number of fields on Zone line"));
1.1 jtc 948: return FALSE;
949: }
950: if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
1.31 christos 951: buf = erealloc(buf, 132 + strlen(TZDEFAULT));
1.6 mrg 952: (void)sprintf(buf, /* XXX: sprintf is safe */
1.5 jtc 953: _("\"Zone %s\" line and -l option are mutually exclusive"),
1.1 jtc 954: TZDEFAULT);
955: error(buf);
956: return FALSE;
957: }
958: if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
1.31 christos 959: buf = erealloc(buf, 132 + strlen(TZDEFRULES));
1.6 mrg 960: (void)sprintf(buf, /* XXX: sprintf is safe */
1.5 jtc 961: _("\"Zone %s\" line and -p option are mutually exclusive"),
1.1 jtc 962: TZDEFRULES);
963: error(buf);
964: return FALSE;
965: }
966: for (i = 0; i < nzones; ++i)
967: if (zones[i].z_name != NULL &&
968: strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
1.31 christos 969: buf = erealloc(buf, 132 +
1.1 jtc 970: strlen(fields[ZF_NAME]) +
1.31 christos 971: strlen(zones[i].z_filename));
1.6 mrg 972: (void)sprintf(buf, /* XXX: sprintf is safe */
1.5 jtc 973: _("duplicate zone name %s (file \"%s\", line %d)"),
1.1 jtc 974: fields[ZF_NAME],
975: zones[i].z_filename,
976: zones[i].z_linenum);
977: error(buf);
978: return FALSE;
979: }
980: return inzsub(fields, nfields, FALSE);
981: }
982:
983: static int
1.31 christos 984: inzcont(char **const fields, const int nfields)
1.1 jtc 985: {
986: if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
1.5 jtc 987: error(_("wrong number of fields on Zone continuation line"));
1.1 jtc 988: return FALSE;
989: }
990: return inzsub(fields, nfields, TRUE);
991: }
992:
993: static int
1.31 christos 994: inzsub(char **const fields, const int nfields, const int iscont)
1.1 jtc 995: {
1.31 christos 996: char * cp;
1.1 jtc 997: static struct zone z;
1.31 christos 998: int i_gmtoff, i_rule, i_format;
999: int i_untilyear, i_untilmonth;
1000: int i_untilday, i_untiltime;
1001: int hasuntil;
1.1 jtc 1002:
1003: if (iscont) {
1004: i_gmtoff = ZFC_GMTOFF;
1005: i_rule = ZFC_RULE;
1006: i_format = ZFC_FORMAT;
1007: i_untilyear = ZFC_TILYEAR;
1008: i_untilmonth = ZFC_TILMONTH;
1009: i_untilday = ZFC_TILDAY;
1010: i_untiltime = ZFC_TILTIME;
1011: z.z_name = NULL;
1012: } else {
1013: i_gmtoff = ZF_GMTOFF;
1014: i_rule = ZF_RULE;
1015: i_format = ZF_FORMAT;
1016: i_untilyear = ZF_TILYEAR;
1017: i_untilmonth = ZF_TILMONTH;
1018: i_untilday = ZF_TILDAY;
1019: i_untiltime = ZF_TILTIME;
1020: z.z_name = ecpyalloc(fields[ZF_NAME]);
1021: }
1022: z.z_filename = filename;
1023: z.z_linenum = linenum;
1.11 jtc 1024: z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
1.1 jtc 1025: if ((cp = strchr(fields[i_format], '%')) != 0) {
1026: if (*++cp != 's' || strchr(cp, '%') != 0) {
1.5 jtc 1027: error(_("invalid abbreviation format"));
1.1 jtc 1028: return FALSE;
1029: }
1030: }
1031: z.z_rule = ecpyalloc(fields[i_rule]);
1032: z.z_format = ecpyalloc(fields[i_format]);
1.25 mlelstv 1033: if (max_format_len < strlen(z.z_format))
1034: max_format_len = strlen(z.z_format);
1.1 jtc 1035: hasuntil = nfields > i_untilyear;
1036: if (hasuntil) {
1037: z.z_untilrule.r_filename = filename;
1038: z.z_untilrule.r_linenum = linenum;
1039: rulesub(&z.z_untilrule,
1040: fields[i_untilyear],
1041: "only",
1042: "",
1043: (nfields > i_untilmonth) ?
1044: fields[i_untilmonth] : "Jan",
1045: (nfields > i_untilday) ? fields[i_untilday] : "1",
1046: (nfields > i_untiltime) ? fields[i_untiltime] : "0");
1047: z.z_untiltime = rpytime(&z.z_untilrule,
1048: z.z_untilrule.r_loyear);
1049: if (iscont && nzones > 0 &&
1050: z.z_untiltime > min_time &&
1051: z.z_untiltime < max_time &&
1052: zones[nzones - 1].z_untiltime > min_time &&
1053: zones[nzones - 1].z_untiltime < max_time &&
1054: zones[nzones - 1].z_untiltime >= z.z_untiltime) {
1.25 mlelstv 1055: error(_(
1056: "Zone continuation line end time is not after end time of previous line"
1057: ));
1.1 jtc 1058: return FALSE;
1059: }
1060: }
1.31 christos 1061: zones = erealloc(zones, (nzones + 1) * sizeof *zones);
1.1 jtc 1062: zones[nzones++] = z;
1063: /*
1064: ** If there was an UNTIL field on this line,
1065: ** there's more information about the zone on the next line.
1066: */
1067: return hasuntil;
1068: }
1069:
1070: static void
1.31 christos 1071: inleap(char **const fields, const int nfields)
1072: {
1073: const char * cp;
1074: const struct lookup * lp;
1075: int i, j;
1.1 jtc 1076: int year, month, day;
1077: long dayoff, tod;
1.25 mlelstv 1078: zic_t t;
1.1 jtc 1079:
1080: if (nfields != LEAP_FIELDS) {
1.5 jtc 1081: error(_("wrong number of fields on Leap line"));
1.1 jtc 1082: return;
1083: }
1084: dayoff = 0;
1085: cp = fields[LP_YEAR];
1086: if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
1.25 mlelstv 1087: /*
1088: ** Leapin' Lizards!
1089: */
1090: error(_("invalid leaping year"));
1091: return;
1.1 jtc 1092: }
1.25 mlelstv 1093: if (!leapseen || leapmaxyear < year)
1094: leapmaxyear = year;
1095: if (!leapseen || leapminyear > year)
1096: leapminyear = year;
1097: leapseen = TRUE;
1.1 jtc 1098: j = EPOCH_YEAR;
1099: while (j != year) {
1100: if (year > j) {
1101: i = len_years[isleap(j)];
1102: ++j;
1103: } else {
1104: --j;
1105: i = -len_years[isleap(j)];
1106: }
1107: dayoff = oadd(dayoff, eitol(i));
1108: }
1109: if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
1.5 jtc 1110: error(_("invalid month name"));
1.1 jtc 1111: return;
1112: }
1113: month = lp->l_value;
1114: j = TM_JANUARY;
1115: while (j != month) {
1116: i = len_months[isleap(year)][j];
1117: dayoff = oadd(dayoff, eitol(i));
1118: ++j;
1119: }
1120: cp = fields[LP_DAY];
1121: if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
1122: day <= 0 || day > len_months[isleap(year)][month]) {
1.5 jtc 1123: error(_("invalid day of month"));
1.1 jtc 1124: return;
1125: }
1126: dayoff = oadd(dayoff, eitol(day - 1));
1.25 mlelstv 1127: if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
1.5 jtc 1128: error(_("time before zero"));
1.1 jtc 1129: return;
1130: }
1.34 ! martin 1131: if (dayoff < min_time / SECSPERDAY) {
1.20 kleink 1132: error(_("time too small"));
1133: return;
1134: }
1.34 ! martin 1135: if (dayoff > max_time / SECSPERDAY) {
1.20 kleink 1136: error(_("time too large"));
1.1 jtc 1137: return;
1138: }
1.25 mlelstv 1139: t = (zic_t) dayoff * SECSPERDAY;
1.5 jtc 1140: tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
1.1 jtc 1141: cp = fields[LP_CORR];
1142: {
1.31 christos 1143: int positive;
1.1 jtc 1144: int count;
1145:
1146: if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
1147: positive = FALSE;
1148: count = 1;
1149: } else if (strcmp(cp, "--") == 0) {
1150: positive = FALSE;
1151: count = 2;
1152: } else if (strcmp(cp, "+") == 0) {
1153: positive = TRUE;
1154: count = 1;
1155: } else if (strcmp(cp, "++") == 0) {
1156: positive = TRUE;
1157: count = 2;
1158: } else {
1.5 jtc 1159: error(_("illegal CORRECTION field on Leap line"));
1.1 jtc 1160: return;
1161: }
1162: if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
1.25 mlelstv 1163: error(_(
1164: "illegal Rolling/Stationary field on Leap line"
1165: ));
1.1 jtc 1166: return;
1167: }
1168: leapadd(tadd(t, tod), positive, lp->l_value, count);
1169: }
1170: }
1171:
1172: static void
1.31 christos 1173: inlink(char **const fields, const int nfields)
1.1 jtc 1174: {
1175: struct link l;
1176:
1177: if (nfields != LINK_FIELDS) {
1.5 jtc 1178: error(_("wrong number of fields on Link line"));
1.1 jtc 1179: return;
1180: }
1181: if (*fields[LF_FROM] == '\0') {
1.5 jtc 1182: error(_("blank FROM field on Link line"));
1.1 jtc 1183: return;
1184: }
1185: if (*fields[LF_TO] == '\0') {
1.5 jtc 1186: error(_("blank TO field on Link line"));
1.1 jtc 1187: return;
1188: }
1189: l.l_filename = filename;
1190: l.l_linenum = linenum;
1191: l.l_from = ecpyalloc(fields[LF_FROM]);
1192: l.l_to = ecpyalloc(fields[LF_TO]);
1.31 christos 1193: links = erealloc(links, (nlinks + 1) * sizeof *links);
1.1 jtc 1194: links[nlinks++] = l;
1195: }
1196:
1197: static void
1.31 christos 1198: rulesub(struct rule *const rp, const char *const loyearp,
1199: const char *const hiyearp, const char *const typep,
1200: const char *const monthp, const char *const dayp, const char *const timep)
1201: {
1202: const struct lookup * lp;
1203: const char * cp;
1204: char * dp;
1205: char * ep;
1.1 jtc 1206:
1207: if ((lp = byword(monthp, mon_names)) == NULL) {
1.5 jtc 1208: error(_("invalid month name"));
1.1 jtc 1209: return;
1210: }
1211: rp->r_month = lp->l_value;
1212: rp->r_todisstd = FALSE;
1213: rp->r_todisgmt = FALSE;
1214: dp = ecpyalloc(timep);
1215: if (*dp != '\0') {
1216: ep = dp + strlen(dp) - 1;
1217: switch (lowerit(*ep)) {
1218: case 's': /* Standard */
1219: rp->r_todisstd = TRUE;
1220: rp->r_todisgmt = FALSE;
1221: *ep = '\0';
1222: break;
1223: case 'w': /* Wall */
1224: rp->r_todisstd = FALSE;
1225: rp->r_todisgmt = FALSE;
1226: *ep = '\0';
1.7 jtc 1227: break;
1.1 jtc 1228: case 'g': /* Greenwich */
1229: case 'u': /* Universal */
1230: case 'z': /* Zulu */
1231: rp->r_todisstd = TRUE;
1232: rp->r_todisgmt = TRUE;
1233: *ep = '\0';
1234: break;
1235: }
1236: }
1.5 jtc 1237: rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
1.31 christos 1238: free(dp);
1.1 jtc 1239: /*
1240: ** Year work.
1241: */
1242: cp = loyearp;
1243: lp = byword(cp, begin_years);
1.25 mlelstv 1244: rp->r_lowasnum = lp == NULL;
1245: if (!rp->r_lowasnum) switch ((int) lp->l_value) {
1.1 jtc 1246: case YR_MINIMUM:
1.3 jtc 1247: rp->r_loyear = INT_MIN;
1.1 jtc 1248: break;
1249: case YR_MAXIMUM:
1.3 jtc 1250: rp->r_loyear = INT_MAX;
1.1 jtc 1251: break;
1252: default: /* "cannot happen" */
1253: (void) fprintf(stderr,
1.5 jtc 1254: _("%s: panic: Invalid l_value %d\n"),
1.1 jtc 1255: progname, lp->l_value);
1.25 mlelstv 1256: exit(EXIT_FAILURE);
1.1 jtc 1257: } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
1.5 jtc 1258: error(_("invalid starting year"));
1.1 jtc 1259: return;
1.11 jtc 1260: }
1.1 jtc 1261: cp = hiyearp;
1.25 mlelstv 1262: lp = byword(cp, end_years);
1263: rp->r_hiwasnum = lp == NULL;
1264: if (!rp->r_hiwasnum) switch ((int) lp->l_value) {
1.1 jtc 1265: case YR_MINIMUM:
1.3 jtc 1266: rp->r_hiyear = INT_MIN;
1.1 jtc 1267: break;
1268: case YR_MAXIMUM:
1.3 jtc 1269: rp->r_hiyear = INT_MAX;
1.1 jtc 1270: break;
1271: case YR_ONLY:
1272: rp->r_hiyear = rp->r_loyear;
1273: break;
1274: default: /* "cannot happen" */
1275: (void) fprintf(stderr,
1.5 jtc 1276: _("%s: panic: Invalid l_value %d\n"),
1.1 jtc 1277: progname, lp->l_value);
1.25 mlelstv 1278: exit(EXIT_FAILURE);
1.1 jtc 1279: } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
1.5 jtc 1280: error(_("invalid ending year"));
1.1 jtc 1281: return;
1.11 jtc 1282: }
1.1 jtc 1283: if (rp->r_loyear > rp->r_hiyear) {
1.5 jtc 1284: error(_("starting year greater than ending year"));
1.1 jtc 1285: return;
1286: }
1287: if (*typep == '\0')
1288: rp->r_yrtype = NULL;
1289: else {
1290: if (rp->r_loyear == rp->r_hiyear) {
1.5 jtc 1291: error(_("typed single year"));
1.1 jtc 1292: return;
1293: }
1294: rp->r_yrtype = ecpyalloc(typep);
1295: }
1296: /*
1297: ** Day work.
1298: ** Accept things such as:
1299: ** 1
1300: ** last-Sunday
1301: ** Sun<=20
1302: ** Sun>=7
1303: */
1304: dp = ecpyalloc(dayp);
1305: if ((lp = byword(dp, lasts)) != NULL) {
1306: rp->r_dycode = DC_DOWLEQ;
1307: rp->r_wday = lp->l_value;
1308: rp->r_dayofmonth = len_months[1][rp->r_month];
1309: } else {
1310: if ((ep = strchr(dp, '<')) != 0)
1311: rp->r_dycode = DC_DOWLEQ;
1312: else if ((ep = strchr(dp, '>')) != 0)
1313: rp->r_dycode = DC_DOWGEQ;
1314: else {
1315: ep = dp;
1316: rp->r_dycode = DC_DOM;
1317: }
1318: if (rp->r_dycode != DC_DOM) {
1319: *ep++ = 0;
1320: if (*ep++ != '=') {
1.5 jtc 1321: error(_("invalid day of month"));
1.31 christos 1322: free(dp);
1.1 jtc 1323: return;
1324: }
1325: if ((lp = byword(dp, wday_names)) == NULL) {
1.5 jtc 1326: error(_("invalid weekday name"));
1.31 christos 1327: free(dp);
1.1 jtc 1328: return;
1329: }
1330: rp->r_wday = lp->l_value;
1331: }
1332: if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
1333: rp->r_dayofmonth <= 0 ||
1334: (rp->r_dayofmonth > len_months[1][rp->r_month])) {
1.5 jtc 1335: error(_("invalid day of month"));
1.31 christos 1336: free(dp);
1.1 jtc 1337: return;
1338: }
1339: }
1.31 christos 1340: free(dp);
1.1 jtc 1341: }
1342:
1343: static void
1.31 christos 1344: convert(const long val, char *const buf)
1.1 jtc 1345: {
1.31 christos 1346: int i;
1347: int shift;
1348: unsigned char *const b = (unsigned char *) buf;
1.1 jtc 1349:
1350: for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
1.31 christos 1351: b[i] = val >> shift;
1.1 jtc 1352: }
1353:
1354: static void
1.31 christos 1355: convert64(const zic_t val, char *const buf)
1.25 mlelstv 1356: {
1.31 christos 1357: int i;
1358: int shift;
1359: unsigned char *const b = (unsigned char *) buf;
1.25 mlelstv 1360:
1361: for (i = 0, shift = 56; i < 8; ++i, shift -= 8)
1.31 christos 1362: b[i] = val >> shift;
1.25 mlelstv 1363: }
1364:
1365: static void
1.31 christos 1366: puttzcode(const long val, FILE *const fp)
1.1 jtc 1367: {
1368: char buf[4];
1369:
1370: convert(val, buf);
1.31 christos 1371: (void) fwrite(buf, sizeof buf, (size_t) 1, fp);
1.1 jtc 1372: }
1373:
1.25 mlelstv 1374: static void
1.31 christos 1375: puttzcode64(const zic_t val, FILE *const fp)
1.25 mlelstv 1376: {
1377: char buf[8];
1378:
1379: convert64(val, buf);
1.31 christos 1380: (void) fwrite(buf, sizeof buf, (size_t) 1, fp);
1.25 mlelstv 1381: }
1382:
1.5 jtc 1383: static int
1.31 christos 1384: atcomp(const void *avp, const void *bvp)
1.5 jtc 1385: {
1.25 mlelstv 1386: const zic_t a = ((const struct attype *) avp)->at;
1387: const zic_t b = ((const struct attype *) bvp)->at;
1388:
1389: return (a < b) ? -1 : (a > b);
1390: }
1391:
1392: static int
1.31 christos 1393: is32(const zic_t x)
1.25 mlelstv 1394: {
1395: return INT32_MIN <= x && x <= INT32_MAX;
1.5 jtc 1396: }
1397:
1.1 jtc 1398: static void
1.31 christos 1399: writezone(const char *const name, const char *const string)
1400: {
1401: FILE * fp;
1402: int i, j;
1403: int leapcnt32, leapi32;
1404: int timecnt32, timei32;
1405: int pass;
1.25 mlelstv 1406: static char * fullname;
1407: static const struct tzhead tzh0;
1408: static struct tzhead tzh;
1409: zic_t ats[TZ_MAX_TIMES];
1410: unsigned char types[TZ_MAX_TIMES];
1.5 jtc 1411:
1412: /*
1413: ** Sort.
1414: */
1415: if (timecnt > 1)
1.31 christos 1416: (void) qsort(attypes, (size_t) timecnt, sizeof *attypes,
1417: atcomp);
1.5 jtc 1418: /*
1419: ** Optimize.
1420: */
1421: {
1422: int fromi;
1423: int toi;
1.1 jtc 1424:
1.5 jtc 1425: toi = 0;
1426: fromi = 0;
1.7 jtc 1427: while (fromi < timecnt && attypes[fromi].at < min_time)
1428: ++fromi;
1.5 jtc 1429: if (isdsts[0] == 0)
1.7 jtc 1430: while (fromi < timecnt && attypes[fromi].type == 0)
1.5 jtc 1431: ++fromi; /* handled by default rule */
1432: for ( ; fromi < timecnt; ++fromi) {
1.25 mlelstv 1433: if (toi != 0 && ((attypes[fromi].at +
1434: gmtoffs[attypes[toi - 1].type]) <=
1435: (attypes[toi - 1].at + gmtoffs[toi == 1 ? 0
1436: : attypes[toi - 2].type]))) {
1437: attypes[toi - 1].type =
1438: attypes[fromi].type;
1439: continue;
1.5 jtc 1440: }
1441: if (toi == 0 ||
1442: attypes[toi - 1].type != attypes[fromi].type)
1443: attypes[toi++] = attypes[fromi];
1444: }
1445: timecnt = toi;
1446: }
1447: /*
1448: ** Transfer.
1449: */
1450: for (i = 0; i < timecnt; ++i) {
1451: ats[i] = attypes[i].at;
1452: types[i] = attypes[i].type;
1453: }
1.25 mlelstv 1454: /*
1455: ** Correct for leap seconds.
1456: */
1457: for (i = 0; i < timecnt; ++i) {
1458: j = leapcnt;
1459: while (--j >= 0)
1460: if (ats[i] > trans[j] - corr[j]) {
1461: ats[i] = tadd(ats[i], corr[j]);
1462: break;
1463: }
1464: }
1465: /*
1466: ** Figure out 32-bit-limited starts and counts.
1467: */
1468: timecnt32 = timecnt;
1469: timei32 = 0;
1470: leapcnt32 = leapcnt;
1471: leapi32 = 0;
1472: while (timecnt32 > 0 && !is32(ats[timecnt32 - 1]))
1473: --timecnt32;
1474: while (timecnt32 > 0 && !is32(ats[timei32])) {
1475: --timecnt32;
1476: ++timei32;
1477: }
1478: while (leapcnt32 > 0 && !is32(trans[leapcnt32 - 1]))
1479: --leapcnt32;
1480: while (leapcnt32 > 0 && !is32(trans[leapi32])) {
1481: --leapcnt32;
1482: ++leapi32;
1483: }
1.1 jtc 1484: fullname = erealloc(fullname,
1.31 christos 1485: strlen(directory) + 1 + strlen(name) + 1);
1.7 jtc 1486: (void) sprintf(fullname, "%s/%s", directory, name); /* XXX: sprintf is safe */
1487: /*
1488: ** Remove old file, if any, to snap links.
1489: */
1490: if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
1491: const char *e = strerror(errno);
1492:
1493: (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
1494: progname, fullname, e);
1.25 mlelstv 1495: exit(EXIT_FAILURE);
1.7 jtc 1496: }
1.1 jtc 1497: if ((fp = fopen(fullname, "wb")) == NULL) {
1498: if (mkdirs(fullname) != 0)
1.25 mlelstv 1499: exit(EXIT_FAILURE);
1.1 jtc 1500: if ((fp = fopen(fullname, "wb")) == NULL) {
1.5 jtc 1501: const char *e = strerror(errno);
1.7 jtc 1502:
1.5 jtc 1503: (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
1504: progname, fullname, e);
1.25 mlelstv 1505: exit(EXIT_FAILURE);
1.1 jtc 1506: }
1507: }
1.25 mlelstv 1508: for (pass = 1; pass <= 2; ++pass) {
1.31 christos 1509: int thistimei, thistimecnt;
1510: int thisleapi, thisleapcnt;
1511: int thistimelim, thisleaplim;
1.25 mlelstv 1512: int writetype[TZ_MAX_TIMES];
1513: int typemap[TZ_MAX_TYPES];
1.31 christos 1514: int thistypecnt;
1.25 mlelstv 1515: char thischars[TZ_MAX_CHARS];
1516: char thischarcnt;
1517: int indmap[TZ_MAX_CHARS];
1518:
1519: if (pass == 1) {
1520: thistimei = timei32;
1521: thistimecnt = timecnt32;
1522: thisleapi = leapi32;
1523: thisleapcnt = leapcnt32;
1524: } else {
1525: thistimei = 0;
1526: thistimecnt = timecnt;
1527: thisleapi = 0;
1528: thisleapcnt = leapcnt;
1529: }
1530: thistimelim = thistimei + thistimecnt;
1531: thisleaplim = thisleapi + thisleapcnt;
1532: for (i = 0; i < typecnt; ++i)
1533: writetype[i] = thistimecnt == timecnt;
1534: if (thistimecnt == 0) {
1535: /*
1536: ** No transition times fall in the current
1537: ** (32- or 64-bit) window.
1538: */
1539: if (typecnt != 0)
1540: writetype[typecnt - 1] = TRUE;
1541: } else {
1542: for (i = thistimei - 1; i < thistimelim; ++i)
1543: if (i >= 0)
1544: writetype[types[i]] = TRUE;
1545: /*
1546: ** For America/Godthab and Antarctica/Palmer
1547: */
1548: if (thistimei == 0)
1549: writetype[0] = TRUE;
1550: }
1.29 christos 1551: #ifndef LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH
1552: /*
1553: ** For some pre-2011 systems: if the last-to-be-written
1554: ** standard (or daylight) type has an offset different from the
1555: ** most recently used offset,
1556: ** append an (unused) copy of the most recently used type
1557: ** (to help get global "altzone" and "timezone" variables
1558: ** set correctly).
1559: */
1560: {
1.31 christos 1561: int mrudst, mrustd, hidst, histd, type;
1.29 christos 1562:
1563: hidst = histd = mrudst = mrustd = -1;
1564: for (i = thistimei; i < thistimelim; ++i)
1565: if (isdsts[types[i]])
1566: mrudst = types[i];
1567: else mrustd = types[i];
1568: for (i = 0; i < typecnt; ++i)
1569: if (writetype[i]) {
1570: if (isdsts[i])
1571: hidst = i;
1572: else histd = i;
1573: }
1574: if (hidst >= 0 && mrudst >= 0 && hidst != mrudst &&
1575: gmtoffs[hidst] != gmtoffs[mrudst]) {
1576: isdsts[mrudst] = -1;
1577: type = addtype(gmtoffs[mrudst],
1578: &chars[abbrinds[mrudst]],
1579: TRUE,
1580: ttisstds[mrudst],
1581: ttisgmts[mrudst]);
1582: isdsts[mrudst] = TRUE;
1583: writetype[type] = TRUE;
1584: }
1585: if (histd >= 0 && mrustd >= 0 && histd != mrustd &&
1586: gmtoffs[histd] != gmtoffs[mrustd]) {
1587: isdsts[mrustd] = -1;
1588: type = addtype(gmtoffs[mrustd],
1589: &chars[abbrinds[mrustd]],
1590: FALSE,
1591: ttisstds[mrustd],
1592: ttisgmts[mrustd]);
1593: isdsts[mrustd] = FALSE;
1594: writetype[type] = TRUE;
1595: }
1596: }
1597: #endif /* !defined LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH */
1.25 mlelstv 1598: thistypecnt = 0;
1599: for (i = 0; i < typecnt; ++i)
1600: typemap[i] = writetype[i] ? thistypecnt++ : -1;
1601: for (i = 0; i < sizeof indmap / sizeof indmap[0]; ++i)
1602: indmap[i] = -1;
1603: thischarcnt = 0;
1604: for (i = 0; i < typecnt; ++i) {
1.31 christos 1605: char * thisabbr;
1.25 mlelstv 1606:
1607: if (!writetype[i])
1608: continue;
1609: if (indmap[abbrinds[i]] >= 0)
1610: continue;
1611: thisabbr = &chars[abbrinds[i]];
1612: for (j = 0; j < thischarcnt; ++j)
1613: if (strcmp(&thischars[j], thisabbr) == 0)
1614: break;
1615: if (j == thischarcnt) {
1616: (void) strcpy(&thischars[(int) thischarcnt],
1617: thisabbr);
1618: thischarcnt += strlen(thisabbr) + 1;
1619: }
1620: indmap[abbrinds[i]] = j;
1621: }
1.31 christos 1622: #define DO(field) (void) fwrite(tzh.field, \
1623: sizeof tzh.field, (size_t) 1, fp)
1.25 mlelstv 1624: tzh = tzh0;
1625: (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
1626: tzh.tzh_version[0] = ZIC_VERSION;
1627: convert(eitol(thistypecnt), tzh.tzh_ttisgmtcnt);
1628: convert(eitol(thistypecnt), tzh.tzh_ttisstdcnt);
1629: convert(eitol(thisleapcnt), tzh.tzh_leapcnt);
1630: convert(eitol(thistimecnt), tzh.tzh_timecnt);
1631: convert(eitol(thistypecnt), tzh.tzh_typecnt);
1632: convert(eitol(thischarcnt), tzh.tzh_charcnt);
1633: DO(tzh_magic);
1634: DO(tzh_version);
1635: DO(tzh_reserved);
1636: DO(tzh_ttisgmtcnt);
1637: DO(tzh_ttisstdcnt);
1638: DO(tzh_leapcnt);
1639: DO(tzh_timecnt);
1640: DO(tzh_typecnt);
1641: DO(tzh_charcnt);
1.1 jtc 1642: #undef DO
1.25 mlelstv 1643: for (i = thistimei; i < thistimelim; ++i)
1644: if (pass == 1)
1.31 christos 1645: puttzcode(ats[i], fp);
1.25 mlelstv 1646: else puttzcode64(ats[i], fp);
1647: for (i = thistimei; i < thistimelim; ++i) {
1648: unsigned char uc;
1649:
1650: uc = typemap[types[i]];
1.31 christos 1651: (void) fwrite(&uc, sizeof uc, (size_t) 1, fp);
1.25 mlelstv 1652: }
1653: for (i = 0; i < typecnt; ++i)
1654: if (writetype[i]) {
1655: puttzcode(gmtoffs[i], fp);
1656: (void) putc(isdsts[i], fp);
1657: (void) putc((unsigned char) indmap[abbrinds[i]], fp);
1.1 jtc 1658: }
1.25 mlelstv 1659: if (thischarcnt != 0)
1.31 christos 1660: (void) fwrite(thischars, sizeof thischars[0],
1.25 mlelstv 1661: (size_t) thischarcnt, fp);
1662: for (i = thisleapi; i < thisleaplim; ++i) {
1.31 christos 1663: zic_t todo;
1.25 mlelstv 1664:
1665: if (roll[i]) {
1666: if (timecnt == 0 || trans[i] < ats[0]) {
1667: j = 0;
1668: while (isdsts[j])
1669: if (++j >= typecnt) {
1670: j = 0;
1671: break;
1672: }
1673: } else {
1674: j = 1;
1675: while (j < timecnt &&
1676: trans[i] >= ats[j])
1677: ++j;
1678: j = types[j - 1];
1679: }
1680: todo = tadd(trans[i], -gmtoffs[j]);
1681: } else todo = trans[i];
1682: if (pass == 1)
1683: puttzcode((long) todo, fp);
1684: else puttzcode64(todo, fp);
1685: puttzcode(corr[i], fp);
1686: }
1687: for (i = 0; i < typecnt; ++i)
1688: if (writetype[i])
1689: (void) putc(ttisstds[i], fp);
1690: for (i = 0; i < typecnt; ++i)
1691: if (writetype[i])
1692: (void) putc(ttisgmts[i], fp);
1.1 jtc 1693: }
1.25 mlelstv 1694: (void) fprintf(fp, "\n%s\n", string);
1.1 jtc 1695: if (ferror(fp) || fclose(fp)) {
1.5 jtc 1696: (void) fprintf(stderr, _("%s: Error writing %s\n"),
1697: progname, fullname);
1.25 mlelstv 1698: exit(EXIT_FAILURE);
1.1 jtc 1699: }
1700: }
1701:
1702: static void
1.31 christos 1703: doabbr(char *const abbr, const int abbrlen, const char *const format,
1704: const char *const letters, const int isdst, const int doquotes)
1705: {
1706: char * cp;
1707: char * slashp;
1708: int len;
1.25 mlelstv 1709:
1710: slashp = strchr(format, '/');
1711: if (slashp == NULL) {
1.1 jtc 1712: if (letters == NULL)
1.25 mlelstv 1713: (void) strlcpy(abbr, format, abbrlen);
1714: else (void) snprintf(abbr, abbrlen, format, letters);
1715: } else if (isdst) {
1716: (void) strlcpy(abbr, slashp + 1, abbrlen);
1717: } else {
1718: if (slashp > format)
1.31 christos 1719: (void) strncpy(abbr, format, (size_t)(slashp - format));
1.25 mlelstv 1720: abbr[slashp - format] = '\0';
1721: }
1722: if (!doquotes)
1723: return;
1724: for (cp = abbr; *cp != '\0'; ++cp)
1725: if (strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZ", *cp) == NULL &&
1726: strchr("abcdefghijklmnopqrstuvwxyz", *cp) == NULL)
1727: break;
1728: len = strlen(abbr);
1729: if (len > 0 && *cp == '\0')
1730: return;
1731: abbr[len + 2] = '\0';
1732: abbr[len + 1] = '>';
1733: for ( ; len > 0; --len)
1734: abbr[len] = abbr[len - 1];
1735: abbr[0] = '<';
1736: }
1737:
1738: static void
1.31 christos 1739: updateminmax(const int x)
1.25 mlelstv 1740: {
1741: if (min_year > x)
1742: min_year = x;
1743: if (max_year < x)
1744: max_year = x;
1745: }
1746:
1747: static int
1.31 christos 1748: stringoffset(char *result, long offset)
1749: {
1750: int hours;
1751: int minutes;
1752: int seconds;
1.25 mlelstv 1753:
1754: result[0] = '\0';
1755: if (offset < 0) {
1756: (void) strcpy(result, "-");
1757: offset = -offset;
1758: }
1759: seconds = offset % SECSPERMIN;
1760: offset /= SECSPERMIN;
1761: minutes = offset % MINSPERHOUR;
1762: offset /= MINSPERHOUR;
1763: hours = offset;
1764: if (hours >= HOURSPERDAY) {
1765: result[0] = '\0';
1766: return -1;
1767: }
1768: (void) sprintf(end(result), "%d", hours);
1769: if (minutes != 0 || seconds != 0) {
1770: (void) sprintf(end(result), ":%02d", minutes);
1771: if (seconds != 0)
1772: (void) sprintf(end(result), ":%02d", seconds);
1773: }
1774: return 0;
1775: }
1776:
1777: static int
1.31 christos 1778: stringrule(char *result, const struct rule *const rp, const long dstoff,
1779: const long gmtoff)
1.25 mlelstv 1780: {
1.31 christos 1781: long tod;
1.25 mlelstv 1782:
1783: result = end(result);
1784: if (rp->r_dycode == DC_DOM) {
1.31 christos 1785: int month, total;
1.25 mlelstv 1786:
1787: if (rp->r_dayofmonth == 29 && rp->r_month == TM_FEBRUARY)
1788: return -1;
1789: total = 0;
1790: for (month = 0; month < rp->r_month; ++month)
1791: total += len_months[0][month];
1792: (void) sprintf(result, "J%d", total + rp->r_dayofmonth);
1793: } else {
1.31 christos 1794: int week;
1.25 mlelstv 1795:
1796: if (rp->r_dycode == DC_DOWGEQ) {
1.29 christos 1797: if ((rp->r_dayofmonth % DAYSPERWEEK) != 1)
1798: return -1;
1.25 mlelstv 1799: week = 1 + rp->r_dayofmonth / DAYSPERWEEK;
1800: } else if (rp->r_dycode == DC_DOWLEQ) {
1801: if (rp->r_dayofmonth == len_months[1][rp->r_month])
1802: week = 5;
1803: else {
1.29 christos 1804: if ((rp->r_dayofmonth % DAYSPERWEEK) != 0)
1.25 mlelstv 1805: return -1;
1.29 christos 1806: week = rp->r_dayofmonth / DAYSPERWEEK;
1.25 mlelstv 1807: }
1808: } else return -1; /* "cannot happen" */
1809: (void) sprintf(result, "M%d.%d.%d",
1810: rp->r_month + 1, week, rp->r_wday);
1811: }
1812: tod = rp->r_tod;
1813: if (rp->r_todisgmt)
1814: tod += gmtoff;
1815: if (rp->r_todisstd && rp->r_stdoff == 0)
1816: tod += dstoff;
1817: if (tod < 0) {
1818: result[0] = '\0';
1819: return -1;
1820: }
1821: if (tod != 2 * SECSPERMIN * MINSPERHOUR) {
1822: (void) strcat(result, "/");
1823: if (stringoffset(end(result), tod) != 0)
1824: return -1;
1825: }
1826: return 0;
1827: }
1828:
1829: static void
1.31 christos 1830: stringzone(char *result, const int resultlen, const struct zone *const zpfirst,
1831: const int zonecount)
1832: {
1833: const struct zone * zp;
1834: struct rule * rp;
1835: struct rule * stdrp;
1836: struct rule * dstrp;
1837: int i;
1838: const char * abbrvar;
1.25 mlelstv 1839:
1840: result[0] = '\0';
1841: zp = zpfirst + zonecount - 1;
1842: stdrp = dstrp = NULL;
1843: for (i = 0; i < zp->z_nrules; ++i) {
1844: rp = &zp->z_rules[i];
1845: if (rp->r_hiwasnum || rp->r_hiyear != INT_MAX)
1846: continue;
1847: if (rp->r_yrtype != NULL)
1848: continue;
1849: if (rp->r_stdoff == 0) {
1850: if (stdrp == NULL)
1851: stdrp = rp;
1852: else return;
1853: } else {
1854: if (dstrp == NULL)
1855: dstrp = rp;
1856: else return;
1857: }
1858: }
1859: if (stdrp == NULL && dstrp == NULL) {
1860: /*
1861: ** There are no rules running through "max".
1862: ** Let's find the latest rule.
1863: */
1864: for (i = 0; i < zp->z_nrules; ++i) {
1865: rp = &zp->z_rules[i];
1866: if (stdrp == NULL || rp->r_hiyear > stdrp->r_hiyear ||
1867: (rp->r_hiyear == stdrp->r_hiyear &&
1868: rp->r_month > stdrp->r_month))
1869: stdrp = rp;
1870: }
1871: if (stdrp != NULL && stdrp->r_stdoff != 0)
1872: return; /* We end up in DST (a POSIX no-no). */
1873: /*
1874: ** Horrid special case: if year is 2037,
1875: ** presume this is a zone handled on a year-by-year basis;
1876: ** do not try to apply a rule to the zone.
1877: */
1878: if (stdrp != NULL && stdrp->r_hiyear == 2037)
1879: return;
1880: }
1881: if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0))
1882: return;
1883: abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar;
1884: doabbr(result, resultlen, zp->z_format, abbrvar, FALSE, TRUE);
1885: if (stringoffset(end(result), -zp->z_gmtoff) != 0) {
1886: result[0] = '\0';
1887: return;
1888: }
1889: if (dstrp == NULL)
1890: return;
1891: doabbr(end(result), resultlen - strlen(result),
1892: zp->z_format, dstrp->r_abbrvar, TRUE, TRUE);
1893: if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR)
1894: if (stringoffset(end(result),
1895: -(zp->z_gmtoff + dstrp->r_stdoff)) != 0) {
1896: result[0] = '\0';
1897: return;
1898: }
1899: (void) strcat(result, ",");
1900: if (stringrule(result, dstrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
1901: result[0] = '\0';
1902: return;
1903: }
1904: (void) strcat(result, ",");
1905: if (stringrule(result, stdrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
1906: result[0] = '\0';
1907: return;
1.1 jtc 1908: }
1909: }
1910:
1911: static void
1.31 christos 1912: outzone(const struct zone *const zpfirst, const int zonecount)
1913: {
1914: const struct zone * zp;
1915: struct rule * rp;
1916: int i, j;
1917: int usestart, useuntil;
1918: zic_t starttime, untiltime;
1919: long gmtoff;
1920: long stdoff;
1921: int year;
1922: long startoff;
1923: int startttisstd;
1924: int startttisgmt;
1925: int type;
1926: char * startbuf;
1927: char * ab;
1928: char * envvar;
1929: int max_abbr_len;
1930: int max_envvar_len;
1931: int prodstic; /* all rules are min to max */
1.25 mlelstv 1932:
1933: max_abbr_len = 2 + max_format_len + max_abbrvar_len;
1934: max_envvar_len = 2 * max_abbr_len + 5 * 9;
1935: startbuf = emalloc(max_abbr_len + 1);
1936: ab = emalloc(max_abbr_len + 1);
1937: envvar = emalloc(max_envvar_len + 1);
1.1 jtc 1938: INITIALIZE(untiltime);
1939: INITIALIZE(starttime);
1940: /*
1941: ** Now. . .finally. . .generate some useful data!
1942: */
1943: timecnt = 0;
1944: typecnt = 0;
1945: charcnt = 0;
1.29 christos 1946: prodstic = zonecount == 1;
1.1 jtc 1947: /*
1.25 mlelstv 1948: ** Thanks to Earl Chew
1.1 jtc 1949: ** for noting the need to unconditionally initialize startttisstd.
1950: */
1951: startttisstd = FALSE;
1952: startttisgmt = FALSE;
1.25 mlelstv 1953: min_year = max_year = EPOCH_YEAR;
1954: if (leapseen) {
1955: updateminmax(leapminyear);
1956: updateminmax(leapmaxyear + (leapmaxyear < INT_MAX));
1957: }
1958: for (i = 0; i < zonecount; ++i) {
1959: zp = &zpfirst[i];
1960: if (i < zonecount - 1)
1961: updateminmax(zp->z_untilrule.r_loyear);
1962: for (j = 0; j < zp->z_nrules; ++j) {
1963: rp = &zp->z_rules[j];
1964: if (rp->r_lowasnum)
1965: updateminmax(rp->r_loyear);
1966: if (rp->r_hiwasnum)
1967: updateminmax(rp->r_hiyear);
1968: }
1969: }
1970: /*
1971: ** Generate lots of data if a rule can't cover all future times.
1972: */
1973: stringzone(envvar, max_envvar_len+1, zpfirst, zonecount);
1974: if (noise && envvar[0] == '\0') {
1.31 christos 1975: char * wp;
1.25 mlelstv 1976:
1.31 christos 1977: wp = ecpyalloc(_("no POSIX environment variable for zone"));
1.25 mlelstv 1978: wp = ecatalloc(wp, " ");
1979: wp = ecatalloc(wp, zpfirst->z_name);
1980: warning(wp);
1.31 christos 1981: free(wp);
1.25 mlelstv 1982: }
1983: if (envvar[0] == '\0') {
1984: if (min_year >= INT_MIN + YEARSPERREPEAT)
1985: min_year -= YEARSPERREPEAT;
1986: else min_year = INT_MIN;
1987: if (max_year <= INT_MAX - YEARSPERREPEAT)
1988: max_year += YEARSPERREPEAT;
1989: else max_year = INT_MAX;
1.29 christos 1990: /*
1991: ** Regardless of any of the above,
1992: ** for a "proDSTic" zone which specifies that its rules
1993: ** always have and always will be in effect,
1994: ** we only need one cycle to define the zone.
1995: */
1996: if (prodstic) {
1997: min_year = 1900;
1998: max_year = min_year + YEARSPERREPEAT;
1999: }
1.25 mlelstv 2000: }
2001: /*
2002: ** For the benefit of older systems,
2003: ** generate data from 1900 through 2037.
2004: */
2005: if (min_year > 1900)
2006: min_year = 1900;
2007: if (max_year < 2037)
2008: max_year = 2037;
1.1 jtc 2009: for (i = 0; i < zonecount; ++i) {
1.19 kleink 2010: /*
2011: ** A guess that may well be corrected later.
2012: */
2013: stdoff = 0;
1.1 jtc 2014: zp = &zpfirst[i];
2015: usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
2016: useuntil = i < (zonecount - 1);
2017: if (useuntil && zp->z_untiltime <= min_time)
2018: continue;
2019: gmtoff = zp->z_gmtoff;
2020: eat(zp->z_filename, zp->z_linenum);
1.5 jtc 2021: *startbuf = '\0';
2022: startoff = zp->z_gmtoff;
1.1 jtc 2023: if (zp->z_nrules == 0) {
2024: stdoff = zp->z_stdoff;
1.25 mlelstv 2025: doabbr(startbuf, max_abbr_len + 1, zp->z_format,
1.31 christos 2026: NULL, stdoff != 0, FALSE);
1.1 jtc 2027: type = addtype(oadd(zp->z_gmtoff, stdoff),
2028: startbuf, stdoff != 0, startttisstd,
2029: startttisgmt);
1.5 jtc 2030: if (usestart) {
1.1 jtc 2031: addtt(starttime, type);
1.5 jtc 2032: usestart = FALSE;
1.19 kleink 2033: } else if (stdoff != 0)
1.1 jtc 2034: addtt(min_time, type);
2035: } else for (year = min_year; year <= max_year; ++year) {
2036: if (useuntil && year > zp->z_untilrule.r_hiyear)
2037: break;
2038: /*
2039: ** Mark which rules to do in the current year.
2040: ** For those to do, calculate rpytime(rp, year);
2041: */
2042: for (j = 0; j < zp->z_nrules; ++j) {
2043: rp = &zp->z_rules[j];
2044: eats(zp->z_filename, zp->z_linenum,
2045: rp->r_filename, rp->r_linenum);
2046: rp->r_todo = year >= rp->r_loyear &&
2047: year <= rp->r_hiyear &&
2048: yearistype(year, rp->r_yrtype);
2049: if (rp->r_todo)
2050: rp->r_temp = rpytime(rp, year);
2051: }
2052: for ( ; ; ) {
1.31 christos 2053: int k;
2054: zic_t jtime, ktime;
2055: long offset;
1.1 jtc 2056:
2057: INITIALIZE(ktime);
2058: if (useuntil) {
2059: /*
1.11 jtc 2060: ** Turn untiltime into UTC
1.1 jtc 2061: ** assuming the current gmtoff and
2062: ** stdoff values.
2063: */
2064: untiltime = zp->z_untiltime;
2065: if (!zp->z_untilrule.r_todisgmt)
2066: untiltime = tadd(untiltime,
2067: -gmtoff);
2068: if (!zp->z_untilrule.r_todisstd)
2069: untiltime = tadd(untiltime,
2070: -stdoff);
2071: }
2072: /*
2073: ** Find the rule (of those to do, if any)
2074: ** that takes effect earliest in the year.
2075: */
2076: k = -1;
2077: for (j = 0; j < zp->z_nrules; ++j) {
2078: rp = &zp->z_rules[j];
2079: if (!rp->r_todo)
2080: continue;
2081: eats(zp->z_filename, zp->z_linenum,
2082: rp->r_filename, rp->r_linenum);
2083: offset = rp->r_todisgmt ? 0 : gmtoff;
2084: if (!rp->r_todisstd)
2085: offset = oadd(offset, stdoff);
2086: jtime = rp->r_temp;
2087: if (jtime == min_time ||
2088: jtime == max_time)
2089: continue;
2090: jtime = tadd(jtime, -offset);
2091: if (k < 0 || jtime < ktime) {
2092: k = j;
2093: ktime = jtime;
2094: }
2095: }
2096: if (k < 0)
2097: break; /* go on to next year */
2098: rp = &zp->z_rules[k];
2099: rp->r_todo = FALSE;
2100: if (useuntil && ktime >= untiltime)
2101: break;
1.5 jtc 2102: stdoff = rp->r_stdoff;
2103: if (usestart && ktime == starttime)
2104: usestart = FALSE;
1.1 jtc 2105: if (usestart) {
1.5 jtc 2106: if (ktime < starttime) {
2107: startoff = oadd(zp->z_gmtoff,
2108: stdoff);
1.25 mlelstv 2109: doabbr(startbuf,
2110: max_abbr_len + 1,
1.6 mrg 2111: zp->z_format,
1.5 jtc 2112: rp->r_abbrvar,
1.25 mlelstv 2113: rp->r_stdoff != 0,
2114: FALSE);
1.5 jtc 2115: continue;
2116: }
2117: if (*startbuf == '\0' &&
1.25 mlelstv 2118: startoff == oadd(zp->z_gmtoff,
2119: stdoff)) {
2120: doabbr(startbuf,
2121: max_abbr_len + 1,
2122: zp->z_format,
2123: rp->r_abbrvar,
2124: rp->r_stdoff !=
2125: 0,
2126: FALSE);
1.1 jtc 2127: }
2128: }
2129: eats(zp->z_filename, zp->z_linenum,
2130: rp->r_filename, rp->r_linenum);
1.25 mlelstv 2131: doabbr(ab, max_abbr_len+1, zp->z_format, rp->r_abbrvar,
2132: rp->r_stdoff != 0, FALSE);
1.1 jtc 2133: offset = oadd(zp->z_gmtoff, rp->r_stdoff);
1.25 mlelstv 2134: type = addtype(offset, ab, rp->r_stdoff != 0,
1.1 jtc 2135: rp->r_todisstd, rp->r_todisgmt);
2136: addtt(ktime, type);
2137: }
2138: }
1.5 jtc 2139: if (usestart) {
2140: if (*startbuf == '\0' &&
2141: zp->z_format != NULL &&
2142: strchr(zp->z_format, '%') == NULL &&
2143: strchr(zp->z_format, '/') == NULL)
1.6 mrg 2144: (void)strncpy(startbuf, zp->z_format,
1.25 mlelstv 2145: max_abbr_len + 1 - 1);
1.5 jtc 2146: eat(zp->z_filename, zp->z_linenum);
2147: if (*startbuf == '\0')
1.7 jtc 2148: error(_("can't determine time zone abbreviation to use just after until time"));
1.5 jtc 2149: else addtt(starttime,
2150: addtype(startoff, startbuf,
2151: startoff != zp->z_gmtoff,
2152: startttisstd,
2153: startttisgmt));
2154: }
1.1 jtc 2155: /*
2156: ** Now we may get to set starttime for the next zone line.
2157: */
2158: if (useuntil) {
2159: startttisstd = zp->z_untilrule.r_todisstd;
2160: startttisgmt = zp->z_untilrule.r_todisgmt;
1.5 jtc 2161: starttime = zp->z_untiltime;
1.1 jtc 2162: if (!startttisstd)
2163: starttime = tadd(starttime, -stdoff);
1.5 jtc 2164: if (!startttisgmt)
2165: starttime = tadd(starttime, -gmtoff);
1.1 jtc 2166: }
2167: }
1.25 mlelstv 2168: writezone(zpfirst->z_name, envvar);
1.31 christos 2169: free(startbuf);
2170: free(ab);
2171: free(envvar);
1.1 jtc 2172: }
2173:
2174: static void
1.31 christos 2175: addtt(const zic_t starttime, int type)
1.1 jtc 2176: {
1.7 jtc 2177: if (starttime <= min_time ||
2178: (timecnt == 1 && attypes[0].at < min_time)) {
2179: gmtoffs[0] = gmtoffs[type];
2180: isdsts[0] = isdsts[type];
2181: ttisstds[0] = ttisstds[type];
2182: ttisgmts[0] = ttisgmts[type];
2183: if (abbrinds[type] != 0)
2184: (void) strcpy(chars, &chars[abbrinds[type]]);
2185: abbrinds[0] = 0;
2186: charcnt = strlen(chars) + 1;
2187: typecnt = 1;
2188: timecnt = 0;
2189: type = 0;
2190: }
1.1 jtc 2191: if (timecnt >= TZ_MAX_TIMES) {
1.5 jtc 2192: error(_("too many transitions?!"));
1.25 mlelstv 2193: exit(EXIT_FAILURE);
1.1 jtc 2194: }
1.5 jtc 2195: attypes[timecnt].at = starttime;
2196: attypes[timecnt].type = type;
1.1 jtc 2197: ++timecnt;
2198: }
2199:
2200: static int
1.31 christos 2201: addtype(const long gmtoff, const char *const abbr, const int isdst,
2202: const int ttisstd, const int ttisgmt)
1.1 jtc 2203: {
1.31 christos 2204: int i, j;
1.1 jtc 2205:
1.5 jtc 2206: if (isdst != TRUE && isdst != FALSE) {
2207: error(_("internal error - addtype called with bad isdst"));
1.25 mlelstv 2208: exit(EXIT_FAILURE);
1.5 jtc 2209: }
2210: if (ttisstd != TRUE && ttisstd != FALSE) {
2211: error(_("internal error - addtype called with bad ttisstd"));
1.25 mlelstv 2212: exit(EXIT_FAILURE);
1.5 jtc 2213: }
2214: if (ttisgmt != TRUE && ttisgmt != FALSE) {
2215: error(_("internal error - addtype called with bad ttisgmt"));
1.25 mlelstv 2216: exit(EXIT_FAILURE);
1.5 jtc 2217: }
1.1 jtc 2218: /*
2219: ** See if there's already an entry for this zone type.
2220: ** If so, just return its index.
2221: */
2222: for (i = 0; i < typecnt; ++i) {
2223: if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
2224: strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
2225: ttisstd == ttisstds[i] &&
2226: ttisgmt == ttisgmts[i])
2227: return i;
2228: }
2229: /*
2230: ** There isn't one; add a new one, unless there are already too
2231: ** many.
2232: */
2233: if (typecnt >= TZ_MAX_TYPES) {
1.5 jtc 2234: error(_("too many local time types"));
1.25 mlelstv 2235: exit(EXIT_FAILURE);
2236: }
2237: if (! (-1L - 2147483647L <= gmtoff && gmtoff <= 2147483647L)) {
2238: error(_("UTC offset out of range"));
2239: exit(EXIT_FAILURE);
1.1 jtc 2240: }
2241: gmtoffs[i] = gmtoff;
2242: isdsts[i] = isdst;
2243: ttisstds[i] = ttisstd;
2244: ttisgmts[i] = ttisgmt;
2245:
2246: for (j = 0; j < charcnt; ++j)
2247: if (strcmp(&chars[j], abbr) == 0)
2248: break;
2249: if (j == charcnt)
2250: newabbr(abbr);
2251: abbrinds[i] = j;
2252: ++typecnt;
2253: return i;
2254: }
2255:
2256: static void
1.31 christos 2257: leapadd(const zic_t t, const int positive, const int rolling, int count)
1.1 jtc 2258: {
1.31 christos 2259: int i, j;
1.1 jtc 2260:
2261: if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
1.5 jtc 2262: error(_("too many leap seconds"));
1.25 mlelstv 2263: exit(EXIT_FAILURE);
1.1 jtc 2264: }
2265: for (i = 0; i < leapcnt; ++i)
2266: if (t <= trans[i]) {
2267: if (t == trans[i]) {
1.5 jtc 2268: error(_("repeated leap second moment"));
1.25 mlelstv 2269: exit(EXIT_FAILURE);
1.1 jtc 2270: }
2271: break;
2272: }
2273: do {
2274: for (j = leapcnt; j > i; --j) {
2275: trans[j] = trans[j - 1];
2276: corr[j] = corr[j - 1];
2277: roll[j] = roll[j - 1];
2278: }
2279: trans[i] = t;
2280: corr[i] = positive ? 1L : eitol(-count);
2281: roll[i] = rolling;
2282: ++leapcnt;
2283: } while (positive && --count != 0);
2284: }
2285:
2286: static void
1.25 mlelstv 2287: adjleap(void)
1.1 jtc 2288: {
1.31 christos 2289: int i;
2290: long last = 0;
1.1 jtc 2291:
2292: /*
2293: ** propagate leap seconds forward
2294: */
2295: for (i = 0; i < leapcnt; ++i) {
2296: trans[i] = tadd(trans[i], last);
2297: last = corr[i] += last;
2298: }
2299: }
2300:
2301: static int
1.31 christos 2302: yearistype(const int year, const char *const type)
1.1 jtc 2303: {
2304: static char * buf;
2305: int result;
2306:
2307: if (type == NULL || *type == '\0')
2308: return TRUE;
1.31 christos 2309: buf = erealloc(buf, 132 + strlen(yitcommand) + strlen(type));
1.6 mrg 2310: (void)sprintf(buf, "%s %d %s", yitcommand, year, type); /* XXX: sprintf is safe */
1.1 jtc 2311: result = system(buf);
1.16 kleink 2312: if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
2313: case 0:
2314: return TRUE;
2315: case 1:
2316: return FALSE;
2317: }
1.5 jtc 2318: error(_("Wild result from command execution"));
2319: (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
1.1 jtc 2320: progname, buf, result);
2321: for ( ; ; )
1.25 mlelstv 2322: exit(EXIT_FAILURE);
1.1 jtc 2323: }
2324:
2325: static int
1.31 christos 2326: lowerit(int a)
1.1 jtc 2327: {
1.3 jtc 2328: a = (unsigned char) a;
1.1 jtc 2329: return (isascii(a) && isupper(a)) ? tolower(a) : a;
2330: }
2331:
1.31 christos 2332: /* case-insensitive equality */
2333: static __pure int
2334: ciequal(const char *ap, const char *bp)
1.1 jtc 2335: {
2336: while (lowerit(*ap) == lowerit(*bp++))
2337: if (*ap++ == '\0')
2338: return TRUE;
2339: return FALSE;
2340: }
2341:
1.31 christos 2342: static __pure int
2343: itsabbr(const char *abbr, const char *word)
1.1 jtc 2344: {
2345: if (lowerit(*abbr) != lowerit(*word))
2346: return FALSE;
2347: ++word;
2348: while (*++abbr != '\0')
1.3 jtc 2349: do {
2350: if (*word == '\0')
2351: return FALSE;
2352: } while (lowerit(*word++) != lowerit(*abbr));
1.1 jtc 2353: return TRUE;
2354: }
2355:
1.31 christos 2356: static __pure const struct lookup *
2357: byword(const char *const word, const struct lookup *const table)
1.1 jtc 2358: {
1.31 christos 2359: const struct lookup * foundlp;
2360: const struct lookup * lp;
1.1 jtc 2361:
2362: if (word == NULL || table == NULL)
2363: return NULL;
2364: /*
2365: ** Look for exact match.
2366: */
2367: for (lp = table; lp->l_word != NULL; ++lp)
2368: if (ciequal(word, lp->l_word))
2369: return lp;
2370: /*
2371: ** Look for inexact match.
2372: */
2373: foundlp = NULL;
2374: for (lp = table; lp->l_word != NULL; ++lp)
1.11 jtc 2375: if (itsabbr(word, lp->l_word)) {
1.1 jtc 2376: if (foundlp == NULL)
2377: foundlp = lp;
2378: else return NULL; /* multiple inexact matches */
1.11 jtc 2379: }
1.1 jtc 2380: return foundlp;
2381: }
2382:
2383: static char **
1.31 christos 2384: getfields(char *cp)
1.1 jtc 2385: {
1.31 christos 2386: char * dp;
2387: char ** array;
2388: int nsubs;
1.1 jtc 2389:
2390: if (cp == NULL)
2391: return NULL;
1.31 christos 2392: array = emalloc((strlen(cp) + 1) * sizeof *array);
1.1 jtc 2393: nsubs = 0;
2394: for ( ; ; ) {
1.25 mlelstv 2395: while (isascii((unsigned char) *cp) &&
2396: isspace((unsigned char) *cp))
2397: ++cp;
1.1 jtc 2398: if (*cp == '\0' || *cp == '#')
2399: break;
2400: array[nsubs++] = dp = cp;
2401: do {
2402: if ((*dp = *cp++) != '"')
2403: ++dp;
2404: else while ((*dp = *cp++) != '"')
2405: if (*dp != '\0')
2406: ++dp;
1.25 mlelstv 2407: else {
2408: error(_(
2409: "Odd number of quotation marks"
2410: ));
2411: exit(1);
2412: }
1.1 jtc 2413: } while (*cp != '\0' && *cp != '#' &&
1.3 jtc 2414: (!isascii(*cp) || !isspace((unsigned char) *cp)));
2415: if (isascii(*cp) && isspace((unsigned char) *cp))
1.1 jtc 2416: ++cp;
2417: *dp = '\0';
2418: }
2419: array[nsubs] = NULL;
2420: return array;
2421: }
2422:
1.31 christos 2423: static __pure long
2424: oadd(const long t1, const long t2)
1.1 jtc 2425: {
1.31 christos 2426: if (t1 < 0 ? t2 < LONG_MIN - t1 : LONG_MAX - t1 < t2) {
1.5 jtc 2427: error(_("time overflow"));
1.25 mlelstv 2428: exit(EXIT_FAILURE);
1.1 jtc 2429: }
1.31 christos 2430: return t1 + t2;
1.1 jtc 2431: }
2432:
1.25 mlelstv 2433: static zic_t
1.31 christos 2434: tadd(const zic_t t1, const long t2)
1.1 jtc 2435: {
2436: if (t1 == max_time && t2 > 0)
2437: return max_time;
2438: if (t1 == min_time && t2 < 0)
2439: return min_time;
1.31 christos 2440: if (t1 < 0 ? t2 < min_time - t1 : max_time - t1 < t2) {
1.5 jtc 2441: error(_("time overflow"));
1.25 mlelstv 2442: exit(EXIT_FAILURE);
1.1 jtc 2443: }
1.31 christos 2444: return t1 + t2;
1.1 jtc 2445: }
2446:
2447: /*
2448: ** Given a rule, and a year, compute the date - in seconds since January 1,
2449: ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
2450: */
2451:
1.25 mlelstv 2452: static zic_t
1.31 christos 2453: rpytime(const struct rule *const rp, const int wantedy)
2454: {
2455: int y, m, i;
2456: long dayoff; /* with a nod to Margaret O. */
2457: zic_t t;
1.1 jtc 2458:
1.3 jtc 2459: if (wantedy == INT_MIN)
1.1 jtc 2460: return min_time;
1.3 jtc 2461: if (wantedy == INT_MAX)
1.1 jtc 2462: return max_time;
2463: dayoff = 0;
2464: m = TM_JANUARY;
2465: y = EPOCH_YEAR;
2466: while (wantedy != y) {
2467: if (wantedy > y) {
2468: i = len_years[isleap(y)];
2469: ++y;
2470: } else {
2471: --y;
2472: i = -len_years[isleap(y)];
2473: }
2474: dayoff = oadd(dayoff, eitol(i));
2475: }
2476: while (m != rp->r_month) {
2477: i = len_months[isleap(y)][m];
2478: dayoff = oadd(dayoff, eitol(i));
2479: ++m;
2480: }
2481: i = rp->r_dayofmonth;
2482: if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
2483: if (rp->r_dycode == DC_DOWLEQ)
2484: --i;
2485: else {
1.5 jtc 2486: error(_("use of 2/29 in non leap-year"));
1.25 mlelstv 2487: exit(EXIT_FAILURE);
1.1 jtc 2488: }
2489: }
2490: --i;
2491: dayoff = oadd(dayoff, eitol(i));
2492: if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
1.31 christos 2493: long wday;
1.1 jtc 2494:
2495: #define LDAYSPERWEEK ((long) DAYSPERWEEK)
2496: wday = eitol(EPOCH_WDAY);
2497: /*
2498: ** Don't trust mod of negative numbers.
2499: */
2500: if (dayoff >= 0)
2501: wday = (wday + dayoff) % LDAYSPERWEEK;
2502: else {
2503: wday -= ((-dayoff) % LDAYSPERWEEK);
2504: if (wday < 0)
2505: wday += LDAYSPERWEEK;
2506: }
2507: while (wday != eitol(rp->r_wday))
2508: if (rp->r_dycode == DC_DOWGEQ) {
2509: dayoff = oadd(dayoff, (long) 1);
2510: if (++wday >= LDAYSPERWEEK)
2511: wday = 0;
2512: ++i;
2513: } else {
2514: dayoff = oadd(dayoff, (long) -1);
2515: if (--wday < 0)
2516: wday = LDAYSPERWEEK - 1;
2517: --i;
2518: }
2519: if (i < 0 || i >= len_months[isleap(y)][m]) {
1.23 kleink 2520: if (noise)
1.25 mlelstv 2521: warning(_("rule goes past start/end of month--\
2522: will not work with pre-2004 versions of zic"));
1.1 jtc 2523: }
2524: }
1.34 ! martin 2525: if (dayoff < min_time / SECSPERDAY)
1.20 kleink 2526: return min_time;
1.34 ! martin 2527: if (dayoff > max_time / SECSPERDAY)
1.20 kleink 2528: return max_time;
1.25 mlelstv 2529: t = (zic_t) dayoff * SECSPERDAY;
1.1 jtc 2530: return tadd(t, rp->r_tod);
2531: }
2532:
2533: static void
1.31 christos 2534: newabbr(const char *const string)
1.1 jtc 2535: {
1.31 christos 2536: int i;
1.1 jtc 2537:
1.25 mlelstv 2538: if (strcmp(string, GRANDPARENTED) != 0) {
1.31 christos 2539: const char * cp;
2540: const char * mp;
1.25 mlelstv 2541:
2542: /*
2543: ** Want one to ZIC_MAX_ABBR_LEN_WO_WARN alphabetics
2544: ** optionally followed by a + or - and a number from 1 to 14.
2545: */
2546: cp = string;
1.31 christos 2547: mp = NULL;
1.25 mlelstv 2548: while (isascii((unsigned char) *cp) &&
2549: isalpha((unsigned char) *cp))
2550: ++cp;
2551: if (cp - string == 0)
1.31 christos 2552: mp = _("time zone abbreviation lacks alphabetic at start");
1.25 mlelstv 2553: if (noise && cp - string > 3)
1.31 christos 2554: mp = _("time zone abbreviation has more than 3 alphabetics");
1.25 mlelstv 2555: if (cp - string > ZIC_MAX_ABBR_LEN_WO_WARN)
1.31 christos 2556: mp = _("time zone abbreviation has too many alphabetics");
2557: if (mp == NULL && (*cp == '+' || *cp == '-')) {
1.25 mlelstv 2558: ++cp;
2559: if (isascii((unsigned char) *cp) &&
2560: isdigit((unsigned char) *cp))
2561: if (*cp++ == '1' &&
2562: *cp >= '0' && *cp <= '4')
2563: ++cp;
2564: }
2565: if (*cp != '\0')
1.31 christos 2566: mp = _("time zone abbreviation differs from POSIX standard");
2567: if (mp != NULL) {
2568: char *wp = ecpyalloc(mp);
1.25 mlelstv 2569: wp = ecatalloc(wp, " (");
2570: wp = ecatalloc(wp, string);
2571: wp = ecatalloc(wp, ")");
2572: warning(wp);
1.31 christos 2573: free(wp);
1.25 mlelstv 2574: }
2575: }
1.1 jtc 2576: i = strlen(string) + 1;
2577: if (charcnt + i > TZ_MAX_CHARS) {
1.5 jtc 2578: error(_("too many, or too long, time zone abbreviations"));
1.25 mlelstv 2579: exit(EXIT_FAILURE);
1.1 jtc 2580: }
1.6 mrg 2581: (void)strncpy(&chars[charcnt], string, sizeof(chars) - charcnt - 1);
1.1 jtc 2582: charcnt += eitol(i);
2583: }
2584:
2585: static int
1.31 christos 2586: mkdirs(char *argname)
1.1 jtc 2587: {
1.31 christos 2588: char * name;
2589: char * cp;
1.1 jtc 2590:
2591: if (argname == NULL || *argname == '\0')
2592: return 0;
2593: cp = name = ecpyalloc(argname);
2594: while ((cp = strchr(cp + 1, '/')) != 0) {
2595: *cp = '\0';
1.13 kleink 2596: #ifndef __NetBSD__
1.1 jtc 2597: /*
2598: ** DOS drive specifier?
2599: */
1.3 jtc 2600: if (isalpha((unsigned char) name[0]) &&
1.4 jtc 2601: name[1] == ':' && name[2] == '\0') {
1.1 jtc 2602: *cp = '/';
2603: continue;
2604: }
1.13 kleink 2605: #endif /* !defined __NetBSD__ */
1.1 jtc 2606: if (!itsdir(name)) {
2607: /*
2608: ** It doesn't seem to exist, so we try to create it.
1.7 jtc 2609: ** Creation may fail because of the directory being
2610: ** created by some other multiprocessor, so we get
2611: ** to do extra checking.
1.1 jtc 2612: */
1.19 kleink 2613: if (mkdir(name, MKDIR_UMASK) != 0) {
1.5 jtc 2614: const char *e = strerror(errno);
1.7 jtc 2615:
2616: if (errno != EEXIST || !itsdir(name)) {
2617: (void) fprintf(stderr,
2618: _("%s: Can't create directory %s: %s\n"),
2619: progname, name, e);
1.31 christos 2620: free(name);
1.7 jtc 2621: return -1;
2622: }
1.1 jtc 2623: }
2624: }
2625: *cp = '/';
2626: }
1.31 christos 2627: free(name);
1.1 jtc 2628: return 0;
2629: }
2630:
2631: static long
1.31 christos 2632: eitol(const int i)
1.1 jtc 2633: {
2634: long l;
2635:
2636: l = i;
2637: if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
2638: (void) fprintf(stderr,
1.5 jtc 2639: _("%s: %d did not sign extend correctly\n"),
1.1 jtc 2640: progname, i);
1.25 mlelstv 2641: exit(EXIT_FAILURE);
1.1 jtc 2642: }
2643: return l;
2644: }
2645:
2646: /*
1.21 kleink 2647: ** UNIX was a registered trademark of The Open Group in 2003.
1.1 jtc 2648: */