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--- Libc/Libc-1725.40.4/stdtime/FreeBSD/localtime.c
+++ /dev/null
@@ -1,2772 +0,0 @@
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wunreachable-code"
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifndef NOID
-static char elsieid[] __unused = "@(#)localtime.c 8.14";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-__FBSDID("$FreeBSD: head/contrib/tzcode/stdtime/localtime.c 289027 2015-10-08 11:42:15Z rodrigc $");
-
-/*
-** Leap second handling from Bradley White.
-** POSIX-style TZ environment variable handling from Guy Harris.
-*/
-
-/*LINTLIBRARY*/
-
-#include "namespace.h"
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <time.h>
-#include <fcntl.h>
-#include <pthread.h>
-#ifdef NOTIFY_TZ
-//#define NOTIFY_TZ_DEBUG
-//#define NOTIFY_TZ_DEBUG_FILE "/var/log/localtime.debug"
-//#define NOTIFY_TZ_LOG "/var/log/localtime.log"
-/* force ALL_STATE if NOTIFY_TZ is set */
-#ifndef ALL_STATE
-#define ALL_STATE
-#endif /* ALL_STATE */
-#include <mach/mach_init.h>
-#include <notify.h>
-#include <alloca.h>
-#endif /* NOTIFY_TZ */
-#include "private.h"
-#include "un-namespace.h"
-
-#include "tzfile.h"
-#include "float.h" /* for FLT_MAX and DBL_MAX */
-
-#ifndef TZ_ABBR_MAX_LEN
-/* UNIX03 requires this to be the same as sysconf(_SC_TZNAME_MAX) */
-#define TZ_ABBR_MAX_LEN 255
-#endif /* !defined TZ_ABBR_MAX_LEN */
-
-#ifndef TZ_ABBR_CHAR_SET
-#define TZ_ABBR_CHAR_SET \
- "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 :+-._"
-#endif /* !defined TZ_ABBR_CHAR_SET */
-
-#ifndef TZ_ABBR_ERR_CHAR
-#define TZ_ABBR_ERR_CHAR '_'
-#endif /* !defined TZ_ABBR_ERR_CHAR */
-
-#include "libc_private.h"
-
-#define _MUTEX_LOCK(x) if (__isthreaded) _pthread_mutex_lock(x)
-#define _MUTEX_UNLOCK(x) if (__isthreaded) _pthread_mutex_unlock(x)
-
-#define _RWLOCK_RDLOCK(x) \
- do { \
- if (__isthreaded) _pthread_rwlock_rdlock(x); \
- } while (0)
-
-#define _RWLOCK_WRLOCK(x) \
- do { \
- if (__isthreaded) _pthread_rwlock_wrlock(x); \
- } while (0)
-
-#define _RWLOCK_UNLOCK(x) \
- do { \
- if (__isthreaded) _pthread_rwlock_unlock(x); \
- } while (0)
-
-/*
-** SunOS 4.1.1 headers lack O_BINARY.
-*/
-
-#ifdef O_BINARY
-#define OPEN_MODE (O_RDONLY | O_BINARY)
-#endif /* defined O_BINARY */
-#ifndef O_BINARY
-#define OPEN_MODE O_RDONLY
-#endif /* !defined O_BINARY */
-
-#ifndef WILDABBR
-/*
-** Someone might make incorrect use of a time zone abbreviation:
-** 1. They might reference tzname[0] before calling tzset (explicitly
-** or implicitly).
-** 2. They might reference tzname[1] before calling tzset (explicitly
-** or implicitly).
-** 3. They might reference tzname[1] after setting to a time zone
-** in which Daylight Saving Time is never observed.
-** 4. They might reference tzname[0] after setting to a time zone
-** in which Standard Time is never observed.
-** 5. They might reference tm.TM_ZONE after calling offtime.
-** What's best to do in the above cases is open to debate;
-** for now, we just set things up so that in any of the five cases
-** WILDABBR is used. Another possibility: initialize tzname[0] to the
-** string "tzname[0] used before set", and similarly for the other cases.
-** And another: initialize tzname[0] to "ERA", with an explanation in the
-** manual page of what this "time zone abbreviation" means (doing this so
-** that tzname[0] has the "normal" length of three characters).
-*/
-#define WILDABBR " "
-#endif /* !defined WILDABBR */
-
-__used static const char wildabbr[] = WILDABBR;
-
-/*
- * In June 2004 it was decided UTC was a more appropriate default time
- * zone than GMT.
- */
-
-__used static const char gmt[] = "UTC";
-
-/*
-** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.
-** We default to US rules as of 1999-08-17.
-** POSIX 1003.1 section 8.1.1 says that the default DST rules are
-** implementation dependent; for historical reasons, US rules are a
-** common default.
-*/
-#ifndef TZDEFRULESTRING
-#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
-#endif /* !defined TZDEFDST */
-
-struct ttinfo { /* time type information */
- long tt_gmtoff; /* UTC offset in seconds */
- int tt_isdst; /* used to set tm_isdst */
- int tt_abbrind; /* abbreviation list index */
- int tt_ttisstd; /* TRUE if transition is std time */
- int tt_ttisgmt; /* TRUE if transition is UTC */
-};
-
-struct lsinfo { /* leap second information */
- time_t ls_trans; /* transition time */
- long ls_corr; /* correction to apply */
-};
-
-#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
-
-#ifdef TZNAME_MAX
-#define MY_TZNAME_MAX TZNAME_MAX
-#endif /* defined TZNAME_MAX */
-#ifndef TZNAME_MAX
-#define MY_TZNAME_MAX 255
-#endif /* !defined TZNAME_MAX */
-
-struct state {
- int leapcnt;
- int timecnt;
- int typecnt;
- int charcnt;
- int goback;
- int goahead;
- time_t ats[TZ_MAX_TIMES];
- unsigned char types[TZ_MAX_TIMES];
- struct ttinfo ttis[TZ_MAX_TYPES];
- char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),
- (2 * (MY_TZNAME_MAX + 1)))];
- struct lsinfo lsis[TZ_MAX_LEAPS];
-};
-
-struct rule {
- int r_type; /* type of rule--see below */
- int r_day; /* day number of rule */
- int r_week; /* week number of rule */
- int r_mon; /* month number of rule */
- long r_time; /* transition time of rule */
-};
-
-#define JULIAN_DAY 0 /* Jn - Julian day */
-#define DAY_OF_YEAR 1 /* n - day of year */
-#define MONTH_NTH_DAY_OF_WEEK 2 /* Mm.n.d - month, week, day of week */
-
-#ifdef NOTIFY_TZ
-typedef struct {
- int token;
- int is_set;
-} notify_tz_t;
-
-#define NOTIFY_TZ_NAME "com.apple.system.timezone"
-#endif /* NOTIFY_TZ */
-
-/*
-** Prototypes for static functions.
-*/
-#define localsub _st_localsub
-#define time1 _st_time1
-#define tzset_basic _st_tzset_basic
-__private_extern__
-#ifdef __LP64__
-struct tm * localsub(const time_t * timep, long offset,
- struct tm * tmp);
-#else /* !__LP64__ */
-void localsub(const time_t * timep, long offset,
- struct tm * tmp);
-#endif /* __LP64__ */
-__private_extern__
-time_t time1(struct tm * tmp,
-#ifdef __LP64__
- struct tm *(*funcp) (const time_t *,
- long, struct tm *),
-#else /* !__LP64__ */
- void(*funcp) (const time_t *,
- long, struct tm *),
-#endif /* __LP64__ */
- long offset,
- int unix03);
-__private_extern__
-void tzset_basic(int);
-
-#if !BUILDING_VARIANT
-static long detzcode(const char * codep);
-static time_t detzcode64(const char * codep);
-static int differ_by_repeat(time_t t1, time_t t0);
-static const char * getzname(const char * strp, char **name, size_t *len);
-static const char * getqzname(const char * strp, const int delim)
- ATTRIBUTE_PURE;
-static const char * getnum(const char * strp, int * nump, int min,
- int max);
-static const char * getsecs(const char * strp, long * secsp);
-static const char * getoffset(const char * strp, long * offsetp);
-static const char * getrule(const char * strp, struct rule * rulep);
-#ifdef NOTIFY_TZ
-static void gmtload(struct state * sp, char *path);
-#else /* ! NOTIFY_TZ */
-static void gmtload(struct state * sp);
-#endif /* NOTIFY_TZ */
-#ifdef __LP64__
-static struct tm * gmtsub(const time_t * timep, long offset,
- struct tm * tmp);
-#else /* !__LP64__ */
-static void gmtsub(const time_t * timep, long offset,
- struct tm * tmp);
-#endif /* __LP64__ */
-static int increment_overflow(int * number, int delta);
-static int leaps_thru_end_of(int y) ATTRIBUTE_PURE;
-static int long_increment_overflow(long * number, int delta);
-static int long_normalize_overflow(long * tensptr,
- int * unitsptr, int base);
-static int normalize_overflow(int * tensptr, int * unitsptr,
- int base);
-#ifdef NOTIFY_TZ
-static void notify_check_tz(notify_tz_t *p);
-static void notify_register_tz(char *file, notify_tz_t *p);
-#endif /* NOTIFY_TZ */
-static void settzname(void);
-static time_t time2(struct tm *tmp,
-#ifdef __LP64__
- struct tm *(*funcp) (const time_t *,
- long, struct tm*),
-#else /* !__LP64__ */
- void(*funcp) (const time_t *,
- long, struct tm*),
-#endif /* __LP64__ */
- long offset, int * okayp, int unix03);
-static time_t time2sub(struct tm *tmp,
-#ifdef __LP64__
- struct tm *(*funcp) (const time_t *,
- long, struct tm*),
-#else /* !__LP64__ */
- void(*funcp) (const time_t *,
- long, struct tm*),
-#endif /* __LP64__ */
- long offset, int * okayp, int do_norm_secs,
- int unix03);
-#ifdef __LP64__
-static struct tm * timesub(const time_t * timep, long offset,
- const struct state * sp, struct tm * tmp);
-#else /* !__LP64__ */
-static void timesub(const time_t * timep, long offset,
- const struct state * sp, struct tm * tmp);
-#endif /* __LP64__ */
-static int tmcomp(const struct tm * atmp,
- const struct tm * btmp);
-static time_t transtime(time_t janfirst, int year,
- const struct rule * rulep, long offset)
- ATTRIBUTE_PURE;
-static int typesequiv(const struct state * sp, int a, int b);
-#ifdef NOTIFY_TZ
-static int tzload(const char * name, struct state * sp, char *path, int doextend);
-#else /* ! NOTIFY_TZ */
-static int tzload(const char * name, struct state * sp, int doextend);
-#endif /* NOTIFY_TZ */
-static int tzparse(const char * name, struct state * sp,
- int lastditch);
-
-#ifdef ALL_STATE
-static struct state * lclptr;
-static struct state * gmtptr;
-#endif /* defined ALL_STATE */
-
-#ifndef ALL_STATE
-static struct state lclmem;
-static struct state gmtmem;
-#define lclptr (&lclmem)
-#define gmtptr (&gmtmem)
-#endif /* State Farm */
-
-#ifndef TZ_STRLEN_MAX
-#define TZ_STRLEN_MAX 255
-#endif /* !defined TZ_STRLEN_MAX */
-
-static char lcl_TZname[TZ_STRLEN_MAX + 1];
-#ifdef NOTIFY_TZ
-#define lcl_is_set (lcl_notify.is_set)
-#define gmt_is_set (gmt_notify.is_set)
-#else /* ! NOTIFY_TZ */
-static int lcl_is_set;
-#endif /* NOTIFY_TZ */
-static pthread_once_t gmt_once = PTHREAD_ONCE_INIT;
-__private_extern__ pthread_rwlock_t lcl_rwlock = PTHREAD_RWLOCK_INITIALIZER;
-static pthread_once_t gmtime_once = PTHREAD_ONCE_INIT;
-static pthread_key_t gmtime_key;
-static int gmtime_key_error;
-static pthread_once_t localtime_once = PTHREAD_ONCE_INIT;
-static pthread_key_t localtime_key;
-static int localtime_key_error;
-
-char * tzname[2] = {
- (char *)wildabbr,
- (char *)wildabbr
-};
-
-/*
-** Section 4.12.3 of X3.159-1989 requires that
-** Except for the strftime function, these functions [asctime,
-** ctime, gmtime, localtime] return values in one of two static
-** objects: a broken-down time structure and an array of char.
-** Thanks to Paul Eggert for noting this.
-*/
-
-static struct tm tm;
-
-#define USG_COMPAT
-#define ALTZONE
-#ifdef USG_COMPAT
-int daylight = 0;
-__private_extern__ void _st_set_timezone(long);
-#endif /* defined USG_COMPAT */
-
-#ifdef ALTZONE
-__private_extern__ long __darwin_altzone = 0;
-#define altzone __darwin_altzone
-#endif /* defined ALTZONE */
-
-#ifdef NOTIFY_TZ
-#ifdef NOTIFY_TZ_DEBUG
-#ifdef NOTIFY_TZ_DEBUG_FILE
-#define NOTIFY_TZ_PRINTF(fmt, args...) \
-{ \
- FILE *_notify_tz_fp_; \
- if((_notify_tz_fp_ = fopen(NOTIFY_TZ_DEBUG_FILE, "a")) != NULL) { \
- fprintf(_notify_tz_fp_, "%d: " fmt, getpid(), ## args); \
- fclose(_notify_tz_fp_); \
- } \
-}
-#else /* ! NOTIFY_TZ_DEBUG_FILE */
-#define NOTIFY_TZ_PRINTF(args...) fprintf(stdout, ## args)
-#endif /* NOTIFY_TZ_DEBUG_FILE */
-#endif /* NOTIFY_TZ_DEBUG */
-#ifdef NOTIFY_TZ_LOG
-#define NOTIFY_LOG(fmt, args...) \
-{ \
- FILE *_notify_log_fp_; \
- if((_notify_log_fp_ = fopen(NOTIFY_TZ_LOG, "a")) != NULL) { \
- fprintf(_notify_log_fp_, "%d: " fmt, getpid(), ## args); \
- fclose(_notify_log_fp_); \
- } \
-}
-#endif /* NOTIFY_TZ_LOG */
-
-static notify_tz_t gmt_notify = {-1, 0};
-static notify_tz_t lcl_notify = {-1, 0};
-static const char notify_tz_name[] = NOTIFY_TZ_NAME;
-#endif /* NOTIFY_TZ */
-
-static long
-detzcode(const char *const codep)
-{
- long result;
- int i;
-
- result = (codep[0] & 0x80) ? ~0L : 0;
- for (i = 0; i < 4; ++i)
- result = (result << 8) | (codep[i] & 0xff);
- return result;
-}
-
-static time_t
-detzcode64(const char *const codep)
-{
- register time_t result;
- register int i;
-
- result = (codep[0] & 0x80) ? (~(int_fast64_t) 0) : 0;
- for (i = 0; i < 8; ++i)
- result = result * 256 + (codep[i] & 0xff);
- return result;
-}
-
-static void
-settzname(void)
-{
- struct state * sp = lclptr;
- int i, need;
- unsigned char * types;
-#define NEED_STD 1
-#define NEED_DST 2
-#define NEED_DAYLIGHT 4
-#define NEED_ALL (NEED_STD | NEED_DST | NEED_DAYLIGHT)
-
- tzname[0] = (char *)wildabbr;
- tzname[1] = (char *)wildabbr;
-#ifdef USG_COMPAT
- daylight = 0;
- _st_set_timezone(0);
-#endif /* defined USG_COMPAT */
-#ifdef ALTZONE
- altzone = 0;
-#endif /* defined ALTZONE */
-#ifdef ALL_STATE
- if (sp == NULL) {
- tzname[0] = tzname[1] = (char *)gmt;
- return;
- }
-#endif /* defined ALL_STATE */
- /*
- * PR-3765457: The original settzname went sequentially through the ttis
- * array, rather than correctly indexing via the types array, to get
- * the real order of the timezone changes. In addition, as a speed up,
- * we start at the end of the changes, and work back, so that most of
- * the time, we don't have to look through the entire array.
- */
- if (sp->timecnt == 0 && sp->typecnt == 1) {
- /*
- * Unfortunately, there is an edge case when typecnt == 1 and
- * timecnt == 0, which would cause the loop to never run. So
- * in that case, we fudge things up so that it is as if
- * timecnt == 1.
- */
- i = 0;
- types = (unsigned char *)""; /* we use the null as index */
- } else {
- /* the usual case */
- i = sp->timecnt - 1;
- types = sp->types;
- }
- need = NEED_ALL;
- for (; i >= 0 && need; --i) {
- const struct ttinfo * const ttisp = &sp->ttis[types[i]];
-
-#ifdef USG_COMPAT
- if ((need & NEED_DAYLIGHT) && ttisp->tt_isdst) {
- need &= ~NEED_DAYLIGHT;
- daylight = 1;
- }
-#endif /* defined USG_COMPAT */
- if (ttisp->tt_isdst) {
- if (need & NEED_DST) {
- need &= ~NEED_DST;
- tzname[1] = &sp->chars[ttisp->tt_abbrind];
-#ifdef ALTZONE
- altzone = -(ttisp->tt_gmtoff);
-#endif /* defined ALTZONE */
- }
- } else if (need & NEED_STD) {
- need &= ~NEED_STD;
- tzname[0] = &sp->chars[ttisp->tt_abbrind];
-#ifdef USG_COMPAT
- _st_set_timezone(-(ttisp->tt_gmtoff));
-#endif /* defined USG_COMPAT */
- }
-#if defined(ALTZONE) || defined(USG_COMPAT)
- if (i == 0) {
-#endif /* defined(ALTZONE) || defined(USG_COMPAT) */
-#ifdef ALTZONE
- if (need & NEED_DST)
- altzone = -(ttisp->tt_gmtoff);
-#endif /* defined ALTZONE */
-#ifdef USG_COMPAT
- if (need & NEED_STD)
- _st_set_timezone(-(ttisp->tt_gmtoff));
-#endif /* defined USG_COMPAT */
-#if defined(ALTZONE) || defined(USG_COMPAT)
- }
-#endif /* defined(ALTZONE) || defined(USG_COMPAT) */
- }
- /*
- ** Finally, scrub the abbreviations.
- ** First, replace bogus characters.
- */
- for (i = 0; i < sp->charcnt; ++i)
- if (strchr(TZ_ABBR_CHAR_SET, sp->chars[i]) == NULL)
- sp->chars[i] = TZ_ABBR_ERR_CHAR;
- /*
- ** Second, truncate long abbreviations.
- */
- for (i = 0; i < sp->typecnt; ++i) {
- register const struct ttinfo * const ttisp = &sp->ttis[i];
- register char * cp = &sp->chars[ttisp->tt_abbrind];
-
- if (strlen(cp) > TZ_ABBR_MAX_LEN &&
- strcmp(cp, GRANDPARENTED) != 0)
- *(cp + TZ_ABBR_MAX_LEN) = '\0';
- }
-}
-
-#ifdef NOTIFY_TZ
-static void
-notify_check_tz(notify_tz_t *p)
-{
- unsigned int nstat;
- int ncheck;
-
- if (p->token < 0)
- return;
- nstat = notify_check(p->token, &ncheck);
- if (nstat || ncheck) {
- p->is_set = 0;
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_check_tz: %s changed\n", (p == &lcl_notify) ? "lcl" : "gmt");
-#endif /* NOTIFY_TZ_DEBUG */
- }
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_check_tz: %s unchanged\n", (p == &lcl_notify) ? "lcl" : "gmt");
-#endif /* NOTIFY_TZ_DEBUG */
-}
-
-extern uint32_t notify_monitor_file(int token, char *path, int flags);
-
-static void
-notify_register_tz(char *file, notify_tz_t *p)
-{
- char *name;
- unsigned int nstat;
- int ncheck;
-
- if (bootstrap_port == MACH_PORT_NULL) {
- /* error handling below resets is_set, we don't want that */
- return;
- }
-
- /*----------------------------------------------------------------
- * Since we don't record the last time zone filename, just cancel
- * (which should remove the file monitor) and setup from scratch
- *----------------------------------------------------------------*/
- if (p->token >= 0)
- notify_cancel(p->token);
- if (!file || *file == 0) {
- /* no time zone file to monitor */
- p->token = -1;
- return;
- }
- /*----------------------------------------------------------------
- * Just use com.apple.system.timezone if the path is /etc/localtime.
- * Otherwise use com.apple.system.timezone.<fullpath>
- *----------------------------------------------------------------*/
- if (TZDEFAULT && strcmp(file, TZDEFAULT) == 0)
- name = (char *)notify_tz_name;
- else {
- name = alloca(sizeof(notify_tz_name) + strlen(file) + 1);
- if (name == NULL) {
- p->token = -1;
- return;
- }
- strcpy(name, notify_tz_name);
- strcat(name, ".");
- strcat(name, file);
- }
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_register_tz: file=%s name=%s\n", file, name);
-#endif /* NOTIFY_TZ_DEBUG */
- nstat = notify_register_check(name, &p->token);
- if (nstat != 0) {
- p->token = -1;
- p->is_set = 0;
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("***notify_register_tz: notify_register_check failed: %u\n", nstat);
-#endif /* NOTIFY_TZ_DEBUG */
-#ifdef NOTIFY_TZ_LOG
- NOTIFY_LOG("notify_register_check(%s) failed: %u\n", name, nstat);
-#endif /* NOTIFY_TZ_LOG */
- return;
- }
- /* don't need to request monitoring /etc/localtime */
- if (name != notify_tz_name) {
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_register_tz: monitor %s\n", file);
-#endif /* NOTIFY_TZ_DEBUG */
- nstat = notify_monitor_file(p->token, file, 0);
- if (nstat != 0) {
- notify_cancel(p->token);
- p->token = -1;
- p->is_set = 0;
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("***notify_register_tz: notify_monitor_file failed: %u\n", nstat);
-#endif /* NOTIFY_TZ_DEBUG */
-#ifdef NOTIFY_TZ_LOG
- NOTIFY_LOG("notify_monitor_file(%s) failed: %u\n", file, nstat);
-#endif /* NOTIFY_TZ_LOG */
- return;
- }
- }
- notify_check(p->token, &ncheck); /* this always returns true */
-}
-#endif /* NOTIFY_TZ */
-
-static int
-differ_by_repeat(const time_t t1, const time_t t0)
-{
- int_fast64_t _t0 = t0;
- int_fast64_t _t1 = t1;
-
- if (TYPE_INTEGRAL(time_t) &&
- TYPE_BIT(time_t) - TYPE_SIGNED(time_t) < SECSPERREPEAT_BITS)
- return 0;
- //turn ((int_fast64_t)(t1 - t0) == SECSPERREPEAT);
- return _t1 - _t0 == SECSPERREPEAT;
-}
-
-static int
-#ifdef NOTIFY_TZ
-tzload(const char *name, struct state * const sp, char *path,
- register const int doextend)
-#else /* ! NOTIFY_TZ */
-tzload(const char *name, struct state * const sp, register const int doextend)
-#endif /* NOTIFY_TZ */
-{
- const char * p;
- int i;
- int fid;
- int stored;
- int nread;
- int res;
- union {
- struct tzhead tzhead;
- char buf[2 * sizeof(struct tzhead) +
- 2 * sizeof *sp +
- 4 * TZ_MAX_TIMES];
- } *u;
-
- u = NULL;
- res = -1;
- sp->goback = sp->goahead = FALSE;
-
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzload: name=%s\n", name);
-#endif /* NOTIFY_TZ_DEBUG */
- /* XXX The following is from OpenBSD, and I'm not sure it is correct */
- if (name != NULL && issetugid() != 0)
- if ((name[0] == ':' && name[1] == '/') ||
- name[0] == '/' || strchr(name, '.'))
- name = NULL;
-#ifdef NOTIFY_TZ
- if (path)
- *path = 0; /* default to empty string on error */
-#endif /* NOTIFY_TZ */
- if (name == NULL && (name = TZDEFAULT) == NULL)
- return -1;
- {
- int doaccess;
- struct stat stab;
- /*
- ** Section 4.9.1 of the C standard says that
- ** "FILENAME_MAX expands to an integral constant expression
- ** that is the size needed for an array of char large enough
- ** to hold the longest file name string that the implementation
- ** guarantees can be opened."
- */
- char *fullname;
-
- fullname = malloc(FILENAME_MAX + 1);
- if (fullname == NULL)
- goto out;
-
- if (name[0] == ':')
- ++name;
- doaccess = name[0] == '/';
- if (!doaccess) {
- if ((p = TZDIR) == NULL) {
- free(fullname);
- return -1;
- }
- if (strlen(p) + 1 + strlen(name) >= FILENAME_MAX) {
- free(fullname);
- return -1;
- }
- (void) strcpy(fullname, p);
- (void) strcat(fullname, "/");
- (void) strcat(fullname, name);
- /*
- ** Set doaccess if '.' (as in "../") shows up in name.
- */
- if (strchr(name, '.') != NULL)
- doaccess = TRUE;
- name = fullname;
- }
-#ifdef NOTIFY_TZ
- if (path) {
- if (strlen(name) > FILENAME_MAX)
- return -1;
- strcpy(path, name);
- }
-#endif /* NOTIFY_TZ */
- if (doaccess && access(name, R_OK) != 0) {
- free(fullname);
- return -1;
- }
- if ((fid = _open(name, OPEN_MODE)) == -1) {
- free(fullname);
- return -1;
- }
- if ((_fstat(fid, &stab) < 0) || !S_ISREG(stab.st_mode)) {
- free(fullname);
- _close(fid);
- return -1;
- }
- free(fullname);
- }
- u = malloc(sizeof(*u));
- if (u == NULL)
- goto out;
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzload: reading %s\n", name);
-#endif /* NOTIFY_TZ_DEBUG */
- nread = _read(fid, u->buf, sizeof u->buf);
- if (_close(fid) < 0 || nread <= 0)
- goto out;
- for (stored = 4; stored <= 8; stored *= 2) {
- int ttisstdcnt;
- int ttisgmtcnt;
-
- ttisstdcnt = (int) detzcode(u->tzhead.tzh_ttisstdcnt);
- ttisgmtcnt = (int) detzcode(u->tzhead.tzh_ttisgmtcnt);
- sp->leapcnt = (int) detzcode(u->tzhead.tzh_leapcnt);
- sp->timecnt = (int) detzcode(u->tzhead.tzh_timecnt);
- sp->typecnt = (int) detzcode(u->tzhead.tzh_typecnt);
- sp->charcnt = (int) detzcode(u->tzhead.tzh_charcnt);
- p = u->tzhead.tzh_charcnt + sizeof u->tzhead.tzh_charcnt;
- if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
- sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
- sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
- sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS ||
- (ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
- (ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
- goto out;
- if (nread - (p - u->buf) <
- sp->timecnt * stored + /* ats */
- sp->timecnt + /* types */
- sp->typecnt * 6 + /* ttinfos */
- sp->charcnt + /* chars */
- sp->leapcnt * (stored + 4) + /* lsinfos */
- ttisstdcnt + /* ttisstds */
- ttisgmtcnt) /* ttisgmts */
- goto out;
- for (i = 0; i < sp->timecnt; ++i) {
- sp->ats[i] = (stored == 4) ?
- detzcode(p) : detzcode64(p);
- p += stored;
- }
- for (i = 0; i < sp->timecnt; ++i) {
- sp->types[i] = (unsigned char) *p++;
- if (sp->types[i] >= sp->typecnt)
- goto out;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- ttisp->tt_gmtoff = detzcode(p);
- p += 4;
- ttisp->tt_isdst = (unsigned char) *p++;
- if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1)
- goto out;
- ttisp->tt_abbrind = (unsigned char) *p++;
- if (ttisp->tt_abbrind < 0 ||
- ttisp->tt_abbrind > sp->charcnt)
- goto out;
- }
- for (i = 0; i < sp->charcnt; ++i)
- sp->chars[i] = *p++;
- sp->chars[i] = '\0'; /* ensure '\0' at end */
- for (i = 0; i < sp->leapcnt; ++i) {
- struct lsinfo * lsisp;
-
- lsisp = &sp->lsis[i];
- lsisp->ls_trans = (stored == 4) ?
- detzcode(p) : detzcode64(p);
- p += stored;
- lsisp->ls_corr = detzcode(p);
- p += 4;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisstdcnt == 0)
- ttisp->tt_ttisstd = FALSE;
- else {
- ttisp->tt_ttisstd = *p++;
- if (ttisp->tt_ttisstd != TRUE &&
- ttisp->tt_ttisstd != FALSE)
- goto out;
- }
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisgmtcnt == 0)
- ttisp->tt_ttisgmt = FALSE;
- else {
- ttisp->tt_ttisgmt = *p++;
- if (ttisp->tt_ttisgmt != TRUE &&
- ttisp->tt_ttisgmt != FALSE)
- goto out;
- }
- }
- /*
- ** Out-of-sort ats should mean we're running on a
- ** signed time_t system but using a data file with
- ** unsigned values (or vice versa).
- */
- for (i = 0; i < sp->timecnt - 2; ++i)
- if (sp->ats[i] > sp->ats[i + 1]) {
- ++i;
- if (TYPE_SIGNED(time_t)) {
- /*
- ** Ignore the end (easy).
- */
- sp->timecnt = i;
- } else {
- /*
- ** Ignore the beginning (harder).
- */
- register int j;
-
- for (j = 0; j + i < sp->timecnt; ++j) {
- sp->ats[j] = sp->ats[j + i];
- sp->types[j] = sp->types[j + i];
- }
- sp->timecnt = j;
- }
- break;
- }
- /*
- ** If this is an old file, we're done.
- */
- if (u->tzhead.tzh_version[0] == '\0')
- break;
- nread -= p - u->buf;
- for (i = 0; i < nread; ++i)
- u->buf[i] = p[i];
- /*
- ** If this is a narrow integer time_t system, we're done.
- */
- if (stored >= (int) sizeof(time_t) && TYPE_INTEGRAL(time_t))
- break;
- }
- if (doextend && nread > 2 &&
- u->buf[0] == '\n' && u->buf[nread - 1] == '\n' &&
- sp->typecnt + 2 <= TZ_MAX_TYPES) {
- struct state *ts;
- register int result;
-
- ts = malloc(sizeof(*ts));
- if (ts == NULL)
- goto out;
- u->buf[nread - 1] = '\0';
- result = tzparse(&u->buf[1], ts, FALSE);
- if (result == 0 && ts->typecnt == 2 &&
- sp->charcnt + ts->charcnt <= TZ_MAX_CHARS) {
- for (i = 0; i < 2; ++i)
- ts->ttis[i].tt_abbrind +=
- sp->charcnt;
- for (i = 0; i < ts->charcnt; ++i)
- sp->chars[sp->charcnt++] =
- ts->chars[i];
- i = 0;
- while (i < ts->timecnt &&
- ts->ats[i] <=
- sp->ats[sp->timecnt - 1])
- ++i;
- while (i < ts->timecnt &&
- sp->timecnt < TZ_MAX_TIMES) {
- sp->ats[sp->timecnt] =
- ts->ats[i];
- sp->types[sp->timecnt] =
- sp->typecnt +
- ts->types[i];
- ++sp->timecnt;
- ++i;
- }
- sp->ttis[sp->typecnt++] = ts->ttis[0];
- sp->ttis[sp->typecnt++] = ts->ttis[1];
- }
- free(ts);
- }
- if (sp->timecnt > 1) {
- for (i = 1; i < sp->timecnt; ++i)
- if (typesequiv(sp, sp->types[i], sp->types[0]) &&
- differ_by_repeat(sp->ats[i], sp->ats[0])) {
- sp->goback = TRUE;
- break;
- }
- for (i = sp->timecnt - 2; i >= 0; --i)
- if (typesequiv(sp, sp->types[sp->timecnt - 1],
- sp->types[i]) &&
- differ_by_repeat(sp->ats[sp->timecnt - 1],
- sp->ats[i])) {
- sp->goahead = TRUE;
- break;
- }
- }
- res = 0;
-out:
- free(u);
- return (res);
-}
-
-static int
-typesequiv(const struct state * const sp, const int a, const int b)
-{
- register int result;
-
- if (sp == NULL ||
- a < 0 || a >= sp->typecnt ||
- b < 0 || b >= sp->typecnt)
- result = FALSE;
- else {
- register const struct ttinfo * ap = &sp->ttis[a];
- register const struct ttinfo * bp = &sp->ttis[b];
- result = ap->tt_gmtoff == bp->tt_gmtoff &&
- ap->tt_isdst == bp->tt_isdst &&
- ap->tt_ttisstd == bp->tt_ttisstd &&
- ap->tt_ttisgmt == bp->tt_ttisgmt &&
- strcmp(&sp->chars[ap->tt_abbrind],
- &sp->chars[bp->tt_abbrind]) == 0;
- }
- return result;
-}
-
-static const int mon_lengths[2][MONSPERYEAR] = {
- { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
- { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
-};
-
-static const int year_lengths[2] = {
- DAYSPERNYEAR, DAYSPERLYEAR
-};
-
-/*
-** Given a pointer into a time zone string, scan until a character that is not
-** a valid character in a zone name is found. Return a pointer to that
-** character.
-*/
-
-static const char *
-getzname(const char *strp, char **name, size_t *len)
-{
- char c;
- char * ket;
-
- if (*strp == '<' && (ket = strchr(strp, '>')) != NULL) {
- *name = (char *)(strp + 1);
- *len = ket - strp - 1;
- return ket + 1;
- }
- *name = (char *)strp;
- while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&
- c != '+')
- ++strp;
- *len = strp - *name;
- return strp;
-}
-
-/*
-** Given a pointer into an extended time zone string, scan until the ending
-** delimiter of the zone name is located. Return a pointer to the delimiter.
-**
-** As with getzname above, the legal character set is actually quite
-** restricted, with other characters producing undefined results.
-** We don't do any checking here; checking is done later in common-case code.
-*/
-
-static const char *
-getqzname(register const char *strp, const int delim)
-{
- register int c;
-
- while ((c = *strp) != '\0' && c != delim)
- ++strp;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a number from that string.
-** Check that the number is within a specified range; if it is not, return
-** NULL.
-** Otherwise, return a pointer to the first character not part of the number.
-*/
-
-static const char *
-getnum(const char *strp, int * const nump, const int min, const int max)
-{
- char c;
- int num;
-
- if (strp == NULL || !is_digit(c = *strp))
- return NULL;
- num = 0;
- do {
- num = num * 10 + (c - '0');
- if (num > max)
- return NULL; /* illegal value */
- c = *++strp;
- } while (is_digit(c));
- if (num < min)
- return NULL; /* illegal value */
- *nump = num;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a number of seconds,
-** in hh[:mm[:ss]] form, from the string.
-** If any error occurs, return NULL.
-** Otherwise, return a pointer to the first character not part of the number
-** of seconds.
-*/
-
-static const char *
-getsecs(const char *strp, long * const secsp)
-{
- int num;
-
- /*
- ** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
- ** "M10.4.6/26", which does not conform to Posix,
- ** but which specifies the equivalent of
- ** ``02:00 on the first Sunday on or after 23 Oct''.
- */
- strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);
- if (strp == NULL)
- return NULL;
- *secsp = num * (long) SECSPERHOUR;
- if (*strp == ':') {
- ++strp;
- strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
- if (strp == NULL)
- return NULL;
- *secsp += num * SECSPERMIN;
- if (*strp == ':') {
- ++strp;
- /* `SECSPERMIN' allows for leap seconds. */
- strp = getnum(strp, &num, 0, SECSPERMIN);
- if (strp == NULL)
- return NULL;
- *secsp += num;
- }
- }
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract an offset, in
-** [+-]hh[:mm[:ss]] form, from the string.
-** If any error occurs, return NULL.
-** Otherwise, return a pointer to the first character not part of the time.
-*/
-
-static const char *
-getoffset(const char *strp, long * const offsetp)
-{
- int neg = 0;
-
- if (*strp == '-') {
- neg = 1;
- ++strp;
- } else if (*strp == '+')
- ++strp;
- strp = getsecs(strp, offsetp);
- if (strp == NULL)
- return NULL; /* illegal time */
- if (neg)
- *offsetp = -*offsetp;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a rule in the form
-** date[/time]. See POSIX section 8 for the format of "date" and "time".
-** If a valid rule is not found, return NULL.
-** Otherwise, return a pointer to the first character not part of the rule.
-*/
-
-static const char *
-getrule(const char *strp, struct rule * const rulep)
-{
- if (*strp == 'J') {
- /*
- ** Julian day.
- */
- rulep->r_type = JULIAN_DAY;
- ++strp;
- strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
- } else if (*strp == 'M') {
- /*
- ** Month, week, day.
- */
- rulep->r_type = MONTH_NTH_DAY_OF_WEEK;
- ++strp;
- strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
- if (strp == NULL)
- return NULL;
- if (*strp++ != '.')
- return NULL;
- strp = getnum(strp, &rulep->r_week, 1, 5);
- if (strp == NULL)
- return NULL;
- if (*strp++ != '.')
- return NULL;
- strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);
- } else if (is_digit(*strp)) {
- /*
- ** Day of year.
- */
- rulep->r_type = DAY_OF_YEAR;
- strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
- } else return NULL; /* invalid format */
- if (strp == NULL)
- return NULL;
- if (*strp == '/') {
- /*
- ** Time specified.
- */
- ++strp;
- strp = getsecs(strp, &rulep->r_time);
- } else rulep->r_time = 2 * SECSPERHOUR; /* default = 2:00:00 */
- return strp;
-}
-
-/*
-** Given the Epoch-relative time of January 1, 00:00:00 UTC, in a year, the
-** year, a rule, and the offset from UTC at the time that rule takes effect,
-** calculate the Epoch-relative time that rule takes effect.
-*/
-
-static time_t
-transtime(const time_t janfirst, const int year,
- const struct rule * const rulep, const long offset)
-{
- int leapyear;
- time_t value;
- int i;
- int d, m1, yy0, yy1, yy2, dow;
-
- INITIALIZE(value);
- leapyear = isleap(year);
- switch (rulep->r_type) {
-
- case JULIAN_DAY:
- /*
- ** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap
- ** years.
- ** In non-leap years, or if the day number is 59 or less, just
- ** add SECSPERDAY times the day number-1 to the time of
- ** January 1, midnight, to get the day.
- */
- value = janfirst + (rulep->r_day - 1) * SECSPERDAY;
- if (leapyear && rulep->r_day >= 60)
- value += SECSPERDAY;
- break;
-
- case DAY_OF_YEAR:
- /*
- ** n - day of year.
- ** Just add SECSPERDAY times the day number to the time of
- ** January 1, midnight, to get the day.
- */
- value = janfirst + rulep->r_day * SECSPERDAY;
- break;
-
- case MONTH_NTH_DAY_OF_WEEK:
- /*
- ** Mm.n.d - nth "dth day" of month m.
- */
- value = janfirst;
- for (i = 0; i < rulep->r_mon - 1; ++i)
- value += mon_lengths[leapyear][i] * SECSPERDAY;
-
- /*
- ** Use Zeller's Congruence to get day-of-week of first day of
- ** month.
- */
- m1 = (rulep->r_mon + 9) % 12 + 1;
- yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;
- yy1 = yy0 / 100;
- yy2 = yy0 % 100;
- dow = ((26 * m1 - 2) / 10 +
- 1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
- if (dow < 0)
- dow += DAYSPERWEEK;
-
- /*
- ** "dow" is the day-of-week of the first day of the month. Get
- ** the day-of-month (zero-origin) of the first "dow" day of the
- ** month.
- */
- d = rulep->r_day - dow;
- if (d < 0)
- d += DAYSPERWEEK;
- for (i = 1; i < rulep->r_week; ++i) {
- if (d + DAYSPERWEEK >=
- mon_lengths[leapyear][rulep->r_mon - 1])
- break;
- d += DAYSPERWEEK;
- }
-
- /*
- ** "d" is the day-of-month (zero-origin) of the day we want.
- */
- value += d * SECSPERDAY;
- break;
- }
-
- /*
- ** "value" is the Epoch-relative time of 00:00:00 UTC on the day in
- ** question. To get the Epoch-relative time of the specified local
- ** time on that day, add the transition time and the current offset
- ** from UTC.
- */
- return value + rulep->r_time + offset;
-}
-
-/*
-** Given a POSIX section 8-style TZ string, fill in the rule tables as
-** appropriate.
-*/
-
-static int
-tzparse(const char *name, struct state * const sp, const int lastditch)
-{
- const char * stdname;
- const char * dstname;
- size_t stdlen;
- size_t dstlen;
- long stdoffset;
- long dstoffset;
- time_t * atp;
- unsigned char * typep;
- char * cp;
- int load_result;
-
- INITIALIZE(dstname);
- if (lastditch) {
- stdname = name;
- stdlen = strlen(name); /* length of standard zone name */
- name += stdlen;
- if (stdlen >= sizeof sp->chars)
- stdlen = (sizeof sp->chars) - 1;
- stdoffset = 0;
- } else {
- name = getzname(name, (char **)&stdname, &stdlen);
- if (*name == '\0')
- return -1; /* was "stdoffset = 0;" */
- else {
- name = getoffset(name, &stdoffset);
- if (name == NULL)
- return -1;
- }
- }
-#ifdef NOTIFY_TZ
- load_result = tzload(TZDEFRULES, sp, NULL, FALSE);
-#else /* !NOTIFY_TZ */
- load_result = tzload(TZDEFRULES, sp, FALSE);
-#endif /* NOTIFY_TZ */
- if (load_result != 0)
- sp->leapcnt = 0; /* so, we're off a little */
- if (*name != '\0') {
- if (*name == '<') {
- dstname = ++name;
- name = getqzname(name, '>');
- if (*name != '>')
- return -1;
- dstlen = name - dstname;
- name++;
- } else {
- dstname = name;
- name = getzname(name, (char **)&dstname, &dstlen);
- }
- if (*name != '\0' && *name != ',' && *name != ';') {
- name = getoffset(name, &dstoffset);
- if (name == NULL)
- return -1;
- } else dstoffset = stdoffset - SECSPERHOUR;
- if (*name == '\0' && load_result != 0)
- name = TZDEFRULESTRING;
- if (*name == ',' || *name == ';') {
- struct rule start;
- struct rule end;
- int year;
- time_t janfirst;
- time_t starttime;
- time_t endtime;
-
- ++name;
- if ((name = getrule(name, &start)) == NULL)
- return -1;
- if (*name++ != ',')
- return -1;
- if ((name = getrule(name, &end)) == NULL)
- return -1;
- if (*name != '\0')
- return -1;
- sp->typecnt = 2; /* standard time and DST */
- /*
- ** Two transitions per year, from EPOCH_YEAR forward.
- */
- sp->ttis[0].tt_gmtoff = -dstoffset;
- sp->ttis[0].tt_isdst = 1;
- sp->ttis[0].tt_abbrind = stdlen + 1;
- sp->ttis[1].tt_gmtoff = -stdoffset;
- sp->ttis[1].tt_isdst = 0;
- sp->ttis[1].tt_abbrind = 0;
- atp = sp->ats;
- typep = sp->types;
- janfirst = 0;
- sp->timecnt = 0;
- for (year = EPOCH_YEAR;
- sp->timecnt + 2 <= TZ_MAX_TIMES;
- ++year) {
- time_t newfirst;
-
- starttime = transtime(janfirst, year, &start,
- stdoffset);
- endtime = transtime(janfirst, year, &end,
- dstoffset);
- if (starttime > endtime) {
- *atp++ = endtime;
- *typep++ = 1; /* DST ends */
- *atp++ = starttime;
- *typep++ = 0; /* DST begins */
- } else {
- *atp++ = starttime;
- *typep++ = 0; /* DST begins */
- *atp++ = endtime;
- *typep++ = 1; /* DST ends */
- }
- sp->timecnt += 2;
- newfirst = janfirst;
- newfirst += year_lengths[isleap(year)] *
- SECSPERDAY;
- if (newfirst <= janfirst)
- break;
- janfirst = newfirst;
- }
- } else {
- long theirstdoffset;
- long theirdstoffset;
- long theiroffset;
- int isdst;
- int i;
- int j;
-
- if (*name != '\0')
- return -1;
- /*
- ** Initial values of theirstdoffset and theirdstoffset.
- */
- theirstdoffset = 0;
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- if (!sp->ttis[j].tt_isdst) {
- theirstdoffset =
- -sp->ttis[j].tt_gmtoff;
- break;
- }
- }
- theirdstoffset = 0;
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- if (sp->ttis[j].tt_isdst) {
- theirdstoffset =
- -sp->ttis[j].tt_gmtoff;
- break;
- }
- }
- /*
- ** Initially we're assumed to be in standard time.
- */
- isdst = FALSE;
- theiroffset = theirstdoffset;
- /*
- ** Now juggle transition times and types
- ** tracking offsets as you do.
- */
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- sp->types[i] = sp->ttis[j].tt_isdst;
- if (sp->ttis[j].tt_ttisgmt) {
- /* No adjustment to transition time */
- } else {
- /*
- ** If summer time is in effect, and the
- ** transition time was not specified as
- ** standard time, add the summer time
- ** offset to the transition time;
- ** otherwise, add the standard time
- ** offset to the transition time.
- */
- /*
- ** Transitions from DST to DDST
- ** will effectively disappear since
- ** POSIX provides for only one DST
- ** offset.
- */
- if (isdst && !sp->ttis[j].tt_ttisstd) {
- sp->ats[i] += dstoffset -
- theirdstoffset;
- } else {
- sp->ats[i] += stdoffset -
- theirstdoffset;
- }
- }
- theiroffset = -sp->ttis[j].tt_gmtoff;
- if (sp->ttis[j].tt_isdst)
- theirdstoffset = theiroffset;
- else theirstdoffset = theiroffset;
- }
- /*
- ** Finally, fill in ttis.
- ** ttisstd and ttisgmt need not be handled.
- */
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = FALSE;
- sp->ttis[0].tt_abbrind = 0;
- sp->ttis[1].tt_gmtoff = -dstoffset;
- sp->ttis[1].tt_isdst = TRUE;
- sp->ttis[1].tt_abbrind = stdlen + 1;
- sp->typecnt = 2;
- }
- } else {
- dstlen = 0;
- sp->typecnt = 1; /* only standard time */
- sp->timecnt = 0;
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = 0;
- sp->ttis[0].tt_abbrind = 0;
- }
- sp->charcnt = stdlen + 1;
- if (dstlen != 0)
- sp->charcnt += dstlen + 1;
- if ((size_t) sp->charcnt > sizeof sp->chars)
- return -1;
- cp = sp->chars;
- (void) strncpy(cp, stdname, stdlen);
- cp += stdlen;
- *cp++ = '\0';
- if (dstlen != 0) {
- (void) strncpy(cp, dstname, dstlen);
- *(cp + dstlen) = '\0';
- }
- return 0;
-}
-
-static void
-#ifdef NOTIFY_TZ
-gmtload(struct state * const sp, char *path)
-#else /* ! NOTIFY_TZ */
-gmtload(struct state * const sp)
-#endif /* NOTIFY_TZ */
-{
-#ifdef NOTIFY_TZ
- if (tzload(gmt, sp, path, TRUE) != 0)
-#else /* ! NOTIFY_TZ */
- if (tzload(gmt, sp, TRUE) != 0)
-#endif /* NOTIFY_TZ */
- (void) tzparse(gmt, sp, TRUE);
-}
-
-/**
- * In NULL_BOOTSTRAP environments, we can't use notifyd to learn about the changes in timezone.
- * Instead, we look at the modified time of the TZDEFAULT symlink.
- * As a performance optimization, we only reload the timezone data if the modified time is newer than the
- * last time we loaded the timezone file.
- *
- * If the tzload fails, we need to reset the saved timestamp to force the timezone file to be reloaded next time
- * we try to use it. This is a special case that occurs at first boot for launchd (and other early boot-tasks)
- * rdar://60592414
- */
-static struct timespec last_default_tzload_mtimespec = {0, 0};
-static void
-tzsetwall_check_default_file_timestamp(void)
-{
- if (!TZDEFAULT) {
- return;
- }
-
- struct stat statbuf;
-
- if (lstat(TZDEFAULT, &statbuf) == 0) {
- if (statbuf.st_mtimespec.tv_sec > last_default_tzload_mtimespec.tv_sec ||
- (statbuf.st_mtimespec.tv_sec == last_default_tzload_mtimespec.tv_sec &&
- statbuf.st_mtimespec.tv_nsec > last_default_tzload_mtimespec.tv_nsec)) {
- /* Trigger resetting the local TZ */
- lcl_is_set = 0;
- }
- last_default_tzload_mtimespec = statbuf.st_mtimespec;
- }
-}
-
-static void
-tzsetwall_basic(int rdlocked)
-{
-#ifdef NOTIFY_TZ
- if (bootstrap_port != MACH_PORT_NULL) {
- notify_check_tz(&lcl_notify);
- } else {
- tzsetwall_check_default_file_timestamp();
- }
-#else
- tzsetwall_check_default_file_timestamp();
-#endif /* NOTIFY_TZ */
-
- if (!rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- if (lcl_is_set < 0) {
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzsetwall_basic lcl_is_set < 0\n");
-#endif
- if (!rdlocked)
- _RWLOCK_UNLOCK(&lcl_rwlock);
- return;
- }
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzsetwall_basic not set\n");
-#endif
- _RWLOCK_UNLOCK(&lcl_rwlock);
-
- _RWLOCK_WRLOCK(&lcl_rwlock);
- lcl_is_set = -1;
-
-#ifdef ALL_STATE
- if (lclptr == NULL) {
- lclptr = calloc(1, sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- _RWLOCK_UNLOCK(&lcl_rwlock);
- if (rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- return;
- }
- }
-#endif /* defined ALL_STATE */
-#ifdef NOTIFY_TZ
- {
- char fullname[FILENAME_MAX + 1];
- if (tzload((char *) NULL, lclptr, fullname, TRUE) != 0) {
- // The load failed, so we need to reset the cached modified time
- // of the timezone file
- last_default_tzload_mtimespec = (const struct timespec){0};
-
- /*
- * If fullname is empty (an error occurred) then
- * default to the UTC path
- */
- gmtload(lclptr, *fullname ? NULL : fullname);
- }
- notify_register_tz(fullname, &lcl_notify);
- }
-#else /* ! NOTIFY_TZ */
- if (tzload((char *) NULL, lclptr, TRUE) != 0)
- gmtload(lclptr);
-#endif /* NOTIFY_TZ */
- settzname();
- _RWLOCK_UNLOCK(&lcl_rwlock);
-
- if (rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
-}
-
-void
-tzsetwall(void)
-{
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzsetwall called\n");
-#endif /* NOTIFY_TZ_DEBUG */
- tzsetwall_basic(0);
-}
-
-__private_extern__ void
-tzset_basic(int rdlocked)
-{
- char * name;
-
- name = getenv_copy_np("TZ");
- if (name == NULL) {
- tzsetwall_basic(rdlocked);
- return;
- }
-
-#ifdef NOTIFY_TZ
- notify_check_tz(&lcl_notify);
-#endif /* NOTIFY_TZ */
- if (!rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0) {
- if (!rdlocked)
- _RWLOCK_UNLOCK(&lcl_rwlock);
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzset_basic matched %s\n", lcl_TZname);
-#endif
- free(name);
- return;
- }
- _RWLOCK_UNLOCK(&lcl_rwlock);
-
- _RWLOCK_WRLOCK(&lcl_rwlock);
- lcl_is_set = strlen(name) < sizeof lcl_TZname;
- if (lcl_is_set)
- (void) strcpy(lcl_TZname, name);
-
-#ifdef ALL_STATE
- if (lclptr == NULL) {
- lclptr = (struct state *) calloc(1, sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- _RWLOCK_UNLOCK(&lcl_rwlock);
- if (rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- free(name);
- return;
- }
- }
-#endif /* defined ALL_STATE */
- if (*name == '\0') {
- /*
- ** User wants it fast rather than right.
- */
- lclptr->leapcnt = 0; /* so, we're off a little */
- lclptr->timecnt = 0;
- lclptr->typecnt = 0;
- lclptr->ttis[0].tt_isdst = 0;
- lclptr->ttis[0].tt_gmtoff = 0;
- lclptr->ttis[0].tt_abbrind = 0;
- (void) strcpy(lclptr->chars, gmt);
-#ifdef NOTIFY_TZ
- notify_register_tz(NULL, &lcl_notify);
-#endif /* NOTIFY_TZ */
- } else
-#ifdef NOTIFY_TZ
- {
- char fullname[FILENAME_MAX + 1];
- /*
- * parsedOK indicates whether tzparse() was called and
- * succeeded. This means that TZ is a time conversion
- * specification, so we don't need to register for
- * notifications.
- */
- int parsedOK = FALSE;
- if (tzload(name, lclptr, fullname, TRUE) != 0) {
- if (name[0] == ':' || !(parsedOK = tzparse(name, lclptr, FALSE) == 0)) {
- /*
- * If fullname is empty (an error occurred) then
- * default to the UTC path
- */
- (void) gmtload(lclptr, *fullname ? NULL : fullname);
- }
- }
- notify_register_tz(parsedOK ? NULL : fullname, &lcl_notify);
- }
-#else /* ! NOTIFY_TZ */
- if (tzload(name, lclptr, TRUE) != 0)
- if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)
- (void) gmtload(lclptr);
-#endif /* NOTIFY_TZ */
- settzname();
- _RWLOCK_UNLOCK(&lcl_rwlock);
-
- if (rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- free(name);
-}
-
-void
-tzset(void)
-{
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzset called TZ=%s\n", getenv("TZ"));
-#endif /* NOTIFY_TZ_DEBUG */
- tzset_basic(0);
-}
-
-/*
-** The easy way to behave "as if no library function calls" localtime
-** is to not call it--so we drop its guts into "localsub", which can be
-** freely called. (And no, the PANS doesn't require the above behavior--
-** but it *is* desirable.)
-**
-** The unused offset argument is for the benefit of mktime variants.
-*/
-
-/*ARGSUSED*/
-#ifdef __LP64__
-__private_extern__ struct tm *
-#else /* !__LP64__ */
-__private_extern__ void
-#endif /* __LP64__ */
-localsub(const time_t *const timep, const long offset, struct tm *const tmp)
-{
- struct state * sp;
- const struct ttinfo * ttisp;
- int i;
-#ifdef __LP64__
- struct tm * result;
-#endif /* __LP64__ */
- const time_t t = *timep;
-
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("localsub called\n");
-#endif /* NOTIFY_TZ_DEBUG */
- sp = lclptr;
-#ifdef ALL_STATE
- if (sp == NULL) {
-#ifdef __LP64__
- return gmtsub(timep, offset, tmp);
-#else /* !__LP64__ */
- gmtsub(timep, offset, tmp);
- return;
-#endif /* __LP64__ */
- }
-#endif /* defined ALL_STATE */
- if ((sp->goback && t < sp->ats[0]) ||
- (sp->goahead && t > sp->ats[sp->timecnt - 1])) {
- time_t newt = t;
- register time_t seconds;
- register time_t tcycles;
- register int_fast64_t icycles;
-
- if (t < sp->ats[0])
- seconds = sp->ats[0] - t;
- else seconds = t - sp->ats[sp->timecnt - 1];
- --seconds;
- tcycles = seconds / YEARSPERREPEAT / AVGSECSPERYEAR;
- ++tcycles;
- icycles = tcycles;
- if (tcycles - icycles >= 1 || icycles - tcycles >= 1) {
-#ifdef __LP64__
- return NULL;
-#else /* !__LP64__ */
- return;
-#endif /* __LP64__ */
- }
- seconds = icycles;
- seconds *= YEARSPERREPEAT;
- seconds *= AVGSECSPERYEAR;
- if (t < sp->ats[0])
- newt += seconds;
- else newt -= seconds;
- if (newt < sp->ats[0] ||
- newt > sp->ats[sp->timecnt - 1])
-#ifdef __LP64__
- return NULL; /* "cannot happen" */
- result = localsub(&newt, offset, tmp);
- if (result == tmp) {
-#else /* !__LP64__ */
- return;
- localsub(&newt, offset, tmp);
- {
-#endif /* __LP64__ */
- register time_t newy;
-
- newy = tmp->tm_year;
- if (t < sp->ats[0])
- newy -= icycles * YEARSPERREPEAT;
- else newy += icycles * YEARSPERREPEAT;
- tmp->tm_year = newy;
- if (tmp->tm_year != newy)
-#ifdef __LP64__
- return NULL;
- }
- return result;
-#else /* !__LP64__ */
- return;
- }
- return;
-#endif /* __LP64__ */
- }
- if (sp->timecnt == 0 || t < sp->ats[0]) {
- i = 0;
- while (sp->ttis[i].tt_isdst)
- if (++i >= sp->typecnt) {
- i = 0;
- break;
- }
- } else {
- register int lo = 1;
- register int hi = sp->timecnt;
-
- while (lo < hi) {
- register int mid = (lo + hi) >> 1;
-
- if (t < sp->ats[mid])
- hi = mid;
- else lo = mid + 1;
- }
- i = (int) sp->types[lo - 1];
- }
- ttisp = &sp->ttis[i];
- /*
- ** To get (wrong) behavior that's compatible with System V Release 2.0
- ** you'd replace the statement below with
- ** t += ttisp->tt_gmtoff;
- ** timesub(&t, 0L, sp, tmp);
- */
-#ifdef __LP64__
- result = timesub(&t, ttisp->tt_gmtoff, sp, tmp);
- if (result == NULL)
- return NULL;
-#else /* !__LP64__ */
- timesub(&t, ttisp->tt_gmtoff, sp, tmp);
-#endif /* __LP64__ */
- tmp->tm_isdst = ttisp->tt_isdst;
- tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];
-#ifdef TM_ZONE
- tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
-#endif /* defined TM_ZONE */
-#ifdef __LP64__
- return result;
-#endif /* __LP64__ */
-}
-
-static void
-localtime_key_init(void)
-{
-
- localtime_key = __LIBC_PTHREAD_KEY_LOCALTIME;
- localtime_key_error = pthread_key_init_np(localtime_key, free);
-}
-
-struct tm *
-localtime(const time_t *const timep)
-{
- struct tm *p_tm;
-
- if (__isthreaded != 0) {
- _pthread_once(&localtime_once, localtime_key_init);
- if (localtime_key_error != 0) {
- errno = localtime_key_error;
- return(NULL);
- }
- p_tm = _pthread_getspecific(localtime_key);
- if (p_tm == NULL) {
- if ((p_tm = (struct tm *)malloc(sizeof(struct tm)))
- == NULL)
- return(NULL);
- _pthread_setspecific(localtime_key, p_tm);
- }
- _RWLOCK_RDLOCK(&lcl_rwlock);
- tzset_basic(1);
-#ifdef __LP64__
- p_tm = localsub(timep, 0L, p_tm);
-#else /* !__LP64__ */
- localsub(timep, 0L, p_tm);
-#endif /* __LP64__ */
- _RWLOCK_UNLOCK(&lcl_rwlock);
- return(p_tm);
- } else {
- tzset_basic(0);
-#ifdef __LP64__
- return localsub(timep, 0L, &tm);
-#else /* !__LP64__ */
- localsub(timep, 0L, &tm);
- return(&tm);
-#endif /* __LP64__ */
- }
-}
-
-/*
-** Re-entrant version of localtime.
-*/
-
-struct tm *
-localtime_r(const time_t *const __restrict timep, struct tm * __restrict tmp)
-{
- _RWLOCK_RDLOCK(&lcl_rwlock);
- tzset_basic(1);
-#ifdef __LP64__
- tmp = localsub(timep, 0L, tmp);
-#else /* !__LP64__ */
- localsub(timep, 0L, tmp);
-#endif /* __LP64__ */
- _RWLOCK_UNLOCK(&lcl_rwlock);
- return tmp;
-}
-
-static void
-gmt_init(void)
-{
-
-#ifdef ALL_STATE
-#ifdef NOTIFY_TZ
- if (gmtptr == NULL)
-#endif /* NOTIFY_TZ */
- gmtptr = (struct state *) calloc(1, sizeof *gmtptr);
- if (gmtptr != NULL)
-#endif /* defined ALL_STATE */
-#ifdef NOTIFY_TZ
- {
- char fullname[FILENAME_MAX + 1];
- gmtload(gmtptr, fullname);
- notify_register_tz(fullname, &gmt_notify);
- }
-#else /* ! NOTIFY_TZ */
- gmtload(gmtptr);
-#endif /* NOTIFY_TZ */
-}
-
-/*
-** gmtsub is to gmtime as localsub is to localtime.
-*/
-
-#ifdef __LP64__
-static struct tm *
-#else /* !__LP64__ */
-static void
-#endif /* __LP64__ */
-gmtsub(const time_t * const timep, const long offset, struct tm * const tmp)
-{
-#ifdef __LP64__
- register struct tm * result;
-#endif /* __LP64__ */
-
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("gmtsub called\n");
-#endif /* NOTIFY_TZ_DEBUG */
-#ifdef NOTIFY_TZ
- notify_check_tz(&gmt_notify);
-#endif /* NOTIFY_TZ */
- pthread_once(&gmt_once, gmt_init);
-#ifdef __LP64__
- result = timesub(timep, offset, gmtptr, tmp);
- if (result == NULL)
- return NULL;
-#else /* !__LP64__ */
- timesub(timep, offset, gmtptr, tmp);
-#endif /* __LP64__ */
-#ifdef TM_ZONE
- /*
- ** Could get fancy here and deliver something such as
- ** "UTC+xxxx" or "UTC-xxxx" if offset is non-zero,
- ** but this is no time for a treasure hunt.
- */
- if (offset != 0)
- tmp->TM_ZONE = (char*)wildabbr;
- else {
-#ifdef ALL_STATE
- if (gmtptr == NULL)
- tmp->TM_ZONE = (char *)gmt;
- else tmp->TM_ZONE = gmtptr->chars;
-#endif /* defined ALL_STATE */
-#ifndef ALL_STATE
- tmp->TM_ZONE = gmtptr->chars;
-#endif /* State Farm */
- }
-#endif /* defined TM_ZONE */
-#ifdef __LP64__
- return result;
-#endif /* __LP64__ */
-}
-
-static void
-gmtime_key_init(void)
-{
-
- gmtime_key = __LIBC_PTHREAD_KEY_GMTIME;
- gmtime_key_error = pthread_key_init_np(gmtime_key, free);
-}
-
-struct tm *
-gmtime(const time_t *const timep)
-{
- struct tm *p_tm;
-
- if (__isthreaded != 0) {
- _pthread_once(&gmtime_once, gmtime_key_init);
- if (gmtime_key_error != 0) {
- errno = gmtime_key_error;
- return(NULL);
- }
- /*
- * Changed to follow POSIX.1 threads standard, which
- * is what BSD currently has.
- */
- if ((p_tm = _pthread_getspecific(gmtime_key)) == NULL) {
- if ((p_tm = (struct tm *)malloc(sizeof(struct tm)))
- == NULL) {
- return(NULL);
- }
- _pthread_setspecific(gmtime_key, p_tm);
- }
-#ifdef __LP64__
- return gmtsub(timep, 0L, p_tm);
-#else /* !__LP64__ */
- gmtsub(timep, 0L, p_tm);
- return(p_tm);
-#endif /* __LP64__ */
- }
- else {
-#ifdef __LP64__
- return gmtsub(timep, 0L, &tm);
-#else /* !__LP64__ */
- gmtsub(timep, 0L, &tm);
- return(&tm);
-#endif /* __LP64__ */
- }
-}
-
-/*
-* Re-entrant version of gmtime.
-*/
-
-struct tm *
-gmtime_r(const time_t *const timep, struct tm *tmp)
-{
-
-#ifdef __LP64__
- return gmtsub(timep, 0L, tmp);
-#else /* !__LP64__ */
- gmtsub(timep, 0L, tmp);
- return tmp;
-#endif /* __LP64__ */
-}
-
-#ifdef STD_INSPIRED
-
-struct tm *
-offtime(const time_t *const timep, const long offset)
-{
-#ifdef __LP64__
- return gmtsub(timep, offset, &tm);
-#else /* !__LP64__ */
- gmtsub(timep, offset, &tm);
- return &tm;
-#endif /* __LP64__ */
-}
-
-#endif /* defined STD_INSPIRED */
-
-/*
-** Return the number of leap years through the end of the given year
-** where, to make the math easy, the answer for year zero is defined as zero.
-*/
-
-__unused static int
-leaps_thru_end_of(register const int y)
-{
-#ifdef __LP64__
- return (y >= 0) ? (y / 4 - y / 100 + y / 400) :
- -(leaps_thru_end_of(-(y + 1)) + 1);
-#else /* !__LP64__ */
- return (y / 4 - y / 100 + y / 400);
-#endif /* __LP64__ */
-}
-
-#ifdef __LP64__
-static struct tm *
-#else /* !__LP64__ */
-static void
-#endif /* __LP64__ */
-timesub(const time_t * const timep, const long offset,
- const struct state * const sp, struct tm * const tmp)
-{
- const struct lsinfo * lp;
- long days;
- long rem;
- long y;
- int yleap;
- const int * ip;
- long corr;
- int hit;
- int i;
-
- corr = 0;
- hit = 0;
-#ifdef ALL_STATE
- i = (sp == NULL) ? 0 : sp->leapcnt;
-#endif /* defined ALL_STATE */
-#ifndef ALL_STATE
- i = sp->leapcnt;
-#endif /* State Farm */
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans) {
- if (*timep == lp->ls_trans) {
- hit = ((i == 0 && lp->ls_corr > 0) ||
- lp->ls_corr > sp->lsis[i - 1].ls_corr);
- if (hit)
- while (i > 0 &&
- sp->lsis[i].ls_trans ==
- sp->lsis[i - 1].ls_trans + 1 &&
- sp->lsis[i].ls_corr ==
- sp->lsis[i - 1].ls_corr + 1) {
- ++hit;
- --i;
- }
- }
- corr = lp->ls_corr;
- break;
- }
- }
- days = *timep / SECSPERDAY;
- rem = *timep % SECSPERDAY;
-#ifdef mc68k
- if (*timep == 0x80000000) {
- /*
- ** A 3B1 muffs the division on the most negative number.
- */
- days = -24855;
- rem = -11648;
- }
-#endif /* defined mc68k */
- rem += (offset - corr);
- while (rem < 0) {
- rem += SECSPERDAY;
- --days;
- }
- while (rem >= SECSPERDAY) {
- rem -= SECSPERDAY;
- ++days;
- }
- tmp->tm_hour = (int) (rem / SECSPERHOUR);
- rem = rem % SECSPERHOUR;
- tmp->tm_min = (int) (rem / SECSPERMIN);
- /*
- ** A positive leap second requires a special
- ** representation. This uses "... ??:59:60" et seq.
- */
- tmp->tm_sec = (int) (rem % SECSPERMIN) + hit;
- tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK);
- if (tmp->tm_wday < 0)
- tmp->tm_wday += DAYSPERWEEK;
- y = EPOCH_YEAR;
-#define _LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400)
-#ifdef __LP64__
-#define LEAPS_THRU_END_OF(y) ((y) >= 0 ? _LEAPS_THRU_END_OF(y) : _LEAPS_THRU_END_OF((y) + 1) - 1)
-#else /* !__LP64__ */
-#define LEAPS_THRU_END_OF(y) _LEAPS_THRU_END_OF(y)
-#endif /* __LP64__ */
- while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) {
- long newy;
-
- newy = y + days / DAYSPERNYEAR;
- if (days < 0)
- --newy;
- days -= (newy - y) * DAYSPERNYEAR +
- LEAPS_THRU_END_OF(newy - 1) -
- LEAPS_THRU_END_OF(y - 1);
- y = newy;
- }
-#ifdef __LP64__
- y -= TM_YEAR_BASE;
- if (y < INT_MIN || y > INT_MAX) {
- errno = EOVERFLOW;
- return NULL;
- }
- tmp->tm_year = y;
-#else /* !__LP64__ */
- tmp->tm_year = y - TM_YEAR_BASE;
-#endif /* __LP64__ */
- tmp->tm_yday = (int) days;
- ip = mon_lengths[yleap];
- for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon))
- days = days - (long) ip[tmp->tm_mon];
- tmp->tm_mday = (int) (days + 1);
- tmp->tm_isdst = 0;
-#ifdef TM_GMTOFF
- tmp->TM_GMTOFF = offset;
-#endif /* defined TM_GMTOFF */
-#ifdef __LP64__
- return tmp;
-#endif /* __LP64__ */
-}
-
-char *
-ctime(const time_t *const timep)
-{
-/*
-** Section 4.12.3.2 of X3.159-1989 requires that
-** The ctime function converts the calendar time pointed to by timer
-** to local time in the form of a string. It is equivalent to
-** asctime(localtime(timer))
-*/
-#ifdef __LP64__
- /*
- * In 64-bit, the timep value may produce a time value with a year
- * that exceeds 32-bits in size (won't fit in struct tm), so localtime
- * will return NULL.
- */
- struct tm *tm = localtime(timep);
-
- if (tm == NULL)
- return NULL;
- return asctime(tm);
-#else /* !__LP64__ */
- return asctime(localtime(timep));
-#endif /* __LP64__ */
-}
-
-char *
-ctime_r(const time_t *const timep, char *buf)
-{
- struct tm mytm;
-
-#ifdef __LP64__
- /*
- * In 64-bit, the timep value may produce a time value with a year
- * that exceeds 32-bits in size (won't fit in struct tm), so localtime_r
- * will return NULL.
- */
- if (localtime_r(timep, &mytm) == NULL)
- return NULL;
- return asctime_r(&mytm, buf);
-#else /* !__LP64__ */
- return asctime_r(localtime_r(timep, &mytm), buf);
-#endif /* __LP64__ */
-}
-
-/*
-** Adapted from code provided by Robert Elz, who writes:
-** The "best" way to do mktime I think is based on an idea of Bob
-** Kridle's (so its said...) from a long time ago.
-** It does a binary search of the time_t space. Since time_t's are
-** just 32 bits, its a max of 32 iterations (even at 64 bits it
-** would still be very reasonable).
-*/
-
-#ifndef WRONG
-#define WRONG (-1)
-#endif /* !defined WRONG */
-
-/*
-** Simplified normalize logic courtesy Paul Eggert.
-*/
-
-static int
-increment_overflow(int *number, int delta)
-{
- int number0;
-
- number0 = *number;
- *number += delta;
- return (*number < number0) != (delta < 0);
-}
-
-static int
-long_increment_overflow(long *number, int delta)
-{
- long number0;
-
- number0 = *number;
- *number += delta;
- return (*number < number0) != (delta < 0);
-}
-
-static int
-normalize_overflow(int *const tensptr, int *const unitsptr, const int base)
-{
- int tensdelta;
-
- tensdelta = (*unitsptr >= 0) ?
- (*unitsptr / base) :
- (-1 - (-1 - *unitsptr) / base);
- *unitsptr -= tensdelta * base;
- return increment_overflow(tensptr, tensdelta);
-}
-
-static int
-long_normalize_overflow(long *const tensptr, int *const unitsptr, const int base)
-{
- register int tensdelta;
-
- tensdelta = (*unitsptr >= 0) ?
- (*unitsptr / base) :
- (-1 - (-1 - *unitsptr) / base);
- *unitsptr -= tensdelta * base;
- return long_increment_overflow(tensptr, tensdelta);
-}
-
-static int
-tmcomp(const struct tm * const atmp, const struct tm * const btmp)
-{
- int result;
-
- /*
- * Assume that atmp and btmp point to normalized tm strutures.
- * So only arithmetic with tm_year could overflow in 64-bit.
- */
- if (atmp->tm_year != btmp->tm_year) {
- return (atmp->tm_year > btmp->tm_year ? 1 : -1);
- }
- if ((result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
- (result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
- (result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
- (result = (atmp->tm_min - btmp->tm_min)) == 0)
- result = atmp->tm_sec - btmp->tm_sec;
- return result;
-}
-
-static time_t
-time2sub(struct tm *const tmp,
-#ifdef __LP64__
- struct tm *(*const funcp)(const time_t *, long, struct tm *),
-#else /* !__LP64__ */
- void(*funcp) (const time_t *, long, struct tm*),
-#endif /* __LP64__ */
- const long offset,
- int *const okayp,
- const int do_norm_secs,
- int unix03)
-{
- const struct state * sp;
- int dir;
- int i, j;
- int saved_seconds;
- long li;
- time_t lo;
- time_t hi;
- long y;
- time_t newt;
- time_t t;
- struct tm yourtm, mytm;
-
- *okayp = FALSE;
- yourtm = *tmp;
- if (do_norm_secs) {
- if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
- SECSPERMIN))
- return WRONG;
- }
- if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
- return WRONG;
- if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
- return WRONG;
- y = yourtm.tm_year;
- if (long_normalize_overflow(&y, &yourtm.tm_mon, MONSPERYEAR))
- return WRONG;
- /*
- ** Turn y into an actual year number for now.
- ** It is converted back to an offset from TM_YEAR_BASE later.
- */
- if (long_increment_overflow(&y, TM_YEAR_BASE))
- return WRONG;
- while (yourtm.tm_mday <= 0) {
- if (long_increment_overflow(&y, -1))
- return WRONG;
- li = y + (1 < yourtm.tm_mon);
- yourtm.tm_mday += year_lengths[isleap(li)];
- }
- while (yourtm.tm_mday > DAYSPERLYEAR) {
- li = y + (1 < yourtm.tm_mon);
- yourtm.tm_mday -= year_lengths[isleap(li)];
- if (long_increment_overflow(&y, 1))
- return WRONG;
- }
- for ( ; ; ) {
- i = mon_lengths[isleap(y)][yourtm.tm_mon];
- if (yourtm.tm_mday <= i)
- break;
- yourtm.tm_mday -= i;
- if (++yourtm.tm_mon >= MONSPERYEAR) {
- yourtm.tm_mon = 0;
- if (long_increment_overflow(&y, 1))
- return WRONG;
- }
- }
- if (long_increment_overflow(&y, -TM_YEAR_BASE))
- return WRONG;
- yourtm.tm_year = y;
- if (yourtm.tm_year != y)
- return WRONG;
- /* Don't go below 1900 for POLA */
- if (yourtm.tm_year < 0)
- return WRONG;
- if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
- saved_seconds = 0;
- else if (y + TM_YEAR_BASE < EPOCH_YEAR) {
- /*
- ** We can't set tm_sec to 0, because that might push the
- ** time below the minimum representable time.
- ** Set tm_sec to 59 instead.
- ** This assumes that the minimum representable time is
- ** not in the same minute that a leap second was deleted from,
- ** which is a safer assumption than using 58 would be.
- */
- if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))
- return WRONG;
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = SECSPERMIN - 1;
- } else {
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = 0;
- }
- /*
- ** Do a binary search (this works whatever time_t's type is).
- */
- if (!TYPE_SIGNED(time_t)) {
- lo = 0;
- hi = lo - 1;
- } else if (!TYPE_INTEGRAL(time_t)) {
- if (sizeof(time_t) > sizeof(float))
- hi = (time_t) DBL_MAX;
- else hi = (time_t) FLT_MAX;
- lo = -hi;
- } else {
- lo = 1;
- for (i = 0; i < (int) TYPE_BIT(time_t) - 1; ++i)
- lo *= 2;
- hi = -(lo + 1);
- }
- for ( ; ; ) {
- t = lo / 2 + hi / 2;
- if (t < lo)
- t = lo;
- else if (t > hi)
- t = hi;
-#ifdef __LP64__
- if ((*funcp)(&t, offset, &mytm) == NULL) {
- /*
- ** Assume that t is too extreme to be represented in
- ** a struct tm; arrange things so that it is less
- ** extreme on the next pass.
- */
- dir = (t > 0) ? 1 : -1;
- } else dir = tmcomp(&mytm, &yourtm);
-#else /* !__LP64__ */
- (*funcp)(&t, offset, &mytm);
- dir = tmcomp(&mytm, &yourtm);
- // If we have searched the entire space without a match, exit
- if (dir != 0 && t == lo && t == hi)
- return WRONG;
-#endif /* __LP64__ */
- if (dir != 0) {
- if (t == lo) {
- ++t;
- if (t <= lo)
- return WRONG;
- ++lo;
- } else if (t == hi) {
- --t;
- if (t >= hi)
- return WRONG;
- --hi;
- }
- if (lo > hi)
- return WRONG;
- if (dir > 0)
- hi = t;
- else lo = t;
- continue;
- }
- sp = (funcp == localsub) ? lclptr : gmtptr;
- if (unix03 && sp->typecnt == 1 && yourtm.tm_isdst > 0)
- yourtm.tm_isdst = 0; /* alternative time does not apply */
- if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
- break;
- /*
- ** Right time, wrong type.
- ** Hunt for right time, right type.
- ** It's okay to guess wrong since the guess
- ** gets checked.
- */
-#ifdef ALL_STATE
- if (sp == NULL)
- return WRONG;
-#endif /* defined ALL_STATE */
- for (i = sp->typecnt - 1; i >= 0; --i) {
- if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)
- continue;
- for (j = sp->typecnt - 1; j >= 0; --j) {
- if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)
- continue;
- newt = t + sp->ttis[j].tt_gmtoff -
- sp->ttis[i].tt_gmtoff;
-#ifdef __LP64__
- if ((*funcp)(&newt, offset, &mytm) == NULL)
- continue;
-#else /* !__LP64__ */
- (*funcp)(&newt, offset, &mytm);
-#endif /* __LP64__ */
- if (tmcomp(&mytm, &yourtm) != 0)
- continue;
- if (mytm.tm_isdst != yourtm.tm_isdst)
- continue;
- /*
- ** We have a match.
- */
- t = newt;
- goto label;
- }
- }
- return WRONG;
- }
-label:
- newt = t + saved_seconds;
- if ((newt < t) != (saved_seconds < 0))
- return WRONG;
- t = newt;
-#ifdef __LP64__
- if ((*funcp)(&t, offset, tmp) == NULL)
- return WRONG;
-#else /* !__LP64__ */
- (*funcp)(&t, offset, tmp);
-#endif /* __LP64__ */
- *okayp = TRUE;
- return t;
-}
-
-static time_t
-time2(struct tm * const tmp,
-#ifdef __LP64__
- struct tm * (*const funcp)(const time_t *, long, struct tm *),
-#else /* !__LP64__ */
- void (*const funcp)(const time_t *, long, struct tm *),
-#endif /* __LP64__ */
- const long offset,
- int *const okayp,
- int unix03)
-{
- time_t t;
-
- /*
- ** First try without normalization of seconds
- ** (in case tm_sec contains a value associated with a leap second).
- ** If that fails, try with normalization of seconds.
- */
- t = time2sub(tmp, funcp, offset, okayp, FALSE, unix03);
- return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE, unix03);
-}
-
-__private_extern__ time_t
-time1(struct tm * const tmp,
-#ifdef __LP64__
-struct tm * (* const funcp)(const time_t *, long, struct tm *),
-#else /* !__LP64__ */
-void (* const funcp)(const time_t *, long, struct tm *),
-#endif /* __LP64__ */
- const long offset, int unix03)
-{
- time_t t;
- const struct state * sp;
- int samei, otheri;
- int sameind, otherind;
- int i;
- int nseen;
- int seen[TZ_MAX_TYPES];
- int types[TZ_MAX_TYPES];
- int okay;
-
- if (tmp == NULL) {
- errno = EINVAL;
- return WRONG;
- }
-
- if (tmp->tm_isdst > 1)
- tmp->tm_isdst = 1;
- t = time2(tmp, funcp, offset, &okay, unix03);
-#ifdef PCTS
- /*
- ** PCTS code courtesy Grant Sullivan.
- */
- if (okay)
- return t;
- if (tmp->tm_isdst < 0)
- tmp->tm_isdst = 0; /* reset to std and try again */
-#endif /* defined PCTS */
-#ifndef PCTS
- if (okay || tmp->tm_isdst < 0)
- return t;
-#endif /* !defined PCTS */
- /*
- ** We're supposed to assume that somebody took a time of one type
- ** and did some math on it that yielded a "struct tm" that's bad.
- ** We try to divine the type they started from and adjust to the
- ** type they need.
- */
- sp = (const struct state *) ((funcp == localsub) ? lclptr : gmtptr);
-#ifdef ALL_STATE
- if (sp == NULL)
- return WRONG;
-#endif /* defined ALL_STATE */
- for (i = 0; i < sp->typecnt; ++i)
- seen[i] = FALSE;
- nseen = 0;
- for (i = sp->timecnt - 1; i >= 0; --i)
- if (!seen[sp->types[i]]) {
- seen[sp->types[i]] = TRUE;
- types[nseen++] = sp->types[i];
- }
- for (sameind = 0; sameind < nseen; ++sameind) {
- samei = types[sameind];
- if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
- continue;
- for (otherind = 0; otherind < nseen; ++otherind) {
- otheri = types[otherind];
- if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
- continue;
- tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff;
- tmp->tm_isdst = !tmp->tm_isdst;
- t = time2(tmp, funcp, offset, &okay, unix03);
- if (okay)
- return t;
- tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff;
- tmp->tm_isdst = !tmp->tm_isdst;
- }
- }
- return WRONG;
-}
-#else /* BUILDING_VARIANT */
-extern pthread_rwlock_t lcl_rwlock;
-#endif /* BUILDING_VARIANT */
-
-time_t
-mktime(struct tm *const tmp)
-{
- time_t mktime_return_value;
- int serrno = errno;
- _RWLOCK_RDLOCK(&lcl_rwlock);
- tzset_basic(1);
- mktime_return_value = time1(tmp, localsub, 0L, __DARWIN_UNIX03);
- _RWLOCK_UNLOCK(&lcl_rwlock);
- errno = serrno;
- return(mktime_return_value);
-}
-
-#if !BUILDING_VARIANT
-#ifdef STD_INSPIRED
-
-time_t
-timelocal(struct tm *const tmp)
-{
- if (tmp != NULL)
- tmp->tm_isdst = -1; /* in case it wasn't initialized */
- return mktime(tmp);
-}
-
-time_t
-timegm(struct tm *const tmp)
-{
- if (tmp != NULL)
- tmp->tm_isdst = 0;
- return time1(tmp, gmtsub, 0L, __DARWIN_UNIX03);
-}
-
-time_t
-timeoff(struct tm *const tmp, const long offset)
-{
- if (tmp != NULL)
- tmp->tm_isdst = 0;
- return time1(tmp, gmtsub, offset, __DARWIN_UNIX03);
-}
-
-#endif /* defined STD_INSPIRED */
-
-#ifdef CMUCS
-
-/*
-** The following is supplied for compatibility with
-** previous versions of the CMUCS runtime library.
-*/
-
-long
-gtime(struct tm *const tmp)
-{
- const time_t t = mktime(tmp);
-
- if (t == WRONG)
- return -1;
- return t;
-}
-
-#endif /* defined CMUCS */
-
-/*
-** XXX--is the below the right way to conditionalize??
-*/
-
-#ifdef STD_INSPIRED
-
-/*
-** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
-** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
-** is not the case if we are accounting for leap seconds.
-** So, we provide the following conversion routines for use
-** when exchanging timestamps with POSIX conforming systems.
-*/
-
-static long
-leapcorr(time_t *timep)
-{
- struct state * sp;
- struct lsinfo * lp;
- int i;
-
- sp = lclptr;
- i = sp->leapcnt;
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans)
- return lp->ls_corr;
- }
- return 0;
-}
-
-time_t
-time2posix(time_t t)
-{
- tzset();
- return t - leapcorr(&t);
-}
-
-time_t
-posix2time(time_t t)
-{
- time_t x;
- time_t y;
-
- tzset();
- /*
- ** For a positive leap second hit, the result
- ** is not unique. For a negative leap second
- ** hit, the corresponding time doesn't exist,
- ** so we return an adjacent second.
- */
- x = t + leapcorr(&t);
- y = x - leapcorr(&x);
- if (y < t) {
- do {
- x++;
- y = x - leapcorr(&x);
- } while (y < t);
- if (t != y)
- return x - 1;
- } else if (y > t) {
- do {
- --x;
- y = x - leapcorr(&x);
- } while (y > t);
- if (t != y)
- return x + 1;
- }
- return x;
-}
-
-#endif /* defined STD_INSPIRED */
-#endif /* !BUILDING_VARIANT */
-#pragma clang diagnostic pop