#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
#endif
__FBSDID("$FreeBSD: head/contrib/tzcode/stdtime/localtime.c 289027 2015-10-08 11:42:15Z rodrigc $");
#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
#ifndef ALL_STATE
#define ALL_STATE
#endif
#include <mach/mach_init.h>
#include <notify.h>
#include <alloca.h>
#endif
#include "private.h"
#include "un-namespace.h"
#include "tzfile.h"
#include "float.h"
#ifndef TZ_ABBR_MAX_LEN
#define TZ_ABBR_MAX_LEN 255
#endif
#ifndef TZ_ABBR_CHAR_SET
#define TZ_ABBR_CHAR_SET \
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 :+-._"
#endif
#ifndef TZ_ABBR_ERR_CHAR
#define TZ_ABBR_ERR_CHAR '_'
#endif
#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)
#ifdef O_BINARY
#define OPEN_MODE (O_RDONLY | O_BINARY)
#endif
#ifndef O_BINARY
#define OPEN_MODE O_RDONLY
#endif
#ifndef WILDABBR
#define WILDABBR " "
#endif
__used static const char wildabbr[] = WILDABBR;
__used static const char gmt[] = "UTC";
#ifndef TZDEFRULESTRING
#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
#endif
struct ttinfo {
long tt_gmtoff;
int tt_isdst;
int tt_abbrind;
int tt_ttisstd;
int tt_ttisgmt;
};
struct lsinfo {
time_t ls_trans;
long ls_corr;
};
#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
#ifdef TZNAME_MAX
#define MY_TZNAME_MAX TZNAME_MAX
#endif
#ifndef TZNAME_MAX
#define MY_TZNAME_MAX 255
#endif
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;
int r_day;
int r_week;
int r_mon;
long r_time;
};
#define JULIAN_DAY 0
#define DAY_OF_YEAR 1
#define MONTH_NTH_DAY_OF_WEEK 2
#ifdef NOTIFY_TZ
typedef struct {
int token;
int is_set;
int null_bootstrap;
} notify_tz_t;
#define NOTIFY_TZ_NAME "com.apple.system.timezone"
#endif
#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
void localsub(const time_t * timep, long offset,
struct tm * tmp);
#endif
__private_extern__
time_t time1(struct tm * tmp,
#ifdef __LP64__
struct tm *(*funcp) (const time_t *,
long, struct tm *),
#else
void(*funcp) (const time_t *,
long, struct tm *),
#endif
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
static void gmtload(struct state * sp);
#endif
#ifdef __LP64__
static struct tm * gmtsub(const time_t * timep, long offset,
struct tm * tmp);
#else
static void gmtsub(const time_t * timep, long offset,
struct tm * tmp);
#endif
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
static void settzname(void);
static time_t time2(struct tm *tmp,
#ifdef __LP64__
struct tm *(*funcp) (const time_t *,
long, struct tm*),
#else
void(*funcp) (const time_t *,
long, struct tm*),
#endif
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
void(*funcp) (const time_t *,
long, struct tm*),
#endif
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
static void timesub(const time_t * timep, long offset,
const struct state * sp, struct tm * tmp);
#endif
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
static int tzload(const char * name, struct state * sp, int doextend);
#endif
static int tzparse(const char * name, struct state * sp,
int lastditch);
#ifdef ALL_STATE
static struct state * lclptr;
static struct state * gmtptr;
#endif
#ifndef ALL_STATE
static struct state lclmem;
static struct state gmtmem;
#define lclptr (&lclmem)
#define gmtptr (&gmtmem)
#endif
#ifndef TZ_STRLEN_MAX
#define TZ_STRLEN_MAX 255
#endif
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
static int lcl_is_set;
#endif
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
};
static struct tm tm;
#define USG_COMPAT
#define ALTZONE
#ifdef USG_COMPAT
int daylight = 0;
__private_extern__ void _st_set_timezone(long);
#endif
#ifdef ALTZONE
__private_extern__ long __darwin_altzone = 0;
#define altzone __darwin_altzone
#endif
#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
#define NOTIFY_TZ_PRINTF(args...) fprintf(stdout, ## args)
#endif
#endif
#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
static notify_tz_t gmt_notify = {-1, 0, 0};
static notify_tz_t lcl_notify = {-1, 0, 0};
static const char notify_tz_name[] = NOTIFY_TZ_NAME;
#endif
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
#ifdef ALTZONE
altzone = 0;
#endif
#ifdef ALL_STATE
if (sp == NULL) {
tzname[0] = tzname[1] = (char *)gmt;
return;
}
#endif
if (sp->timecnt == 0 && sp->typecnt == 1) {
i = 0;
types = (unsigned char *)"";
} else {
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
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
}
} 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
}
#if defined(ALTZONE) || defined(USG_COMPAT)
if (i == 0) {
#endif
#ifdef ALTZONE
if (need & NEED_DST)
altzone = -(ttisp->tt_gmtoff);
#endif
#ifdef USG_COMPAT
if (need & NEED_STD)
_st_set_timezone(-(ttisp->tt_gmtoff));
#endif
#if defined(ALTZONE) || defined(USG_COMPAT)
}
#endif
}
for (i = 0; i < sp->charcnt; ++i)
if (strchr(TZ_ABBR_CHAR_SET, sp->chars[i]) == NULL)
sp->chars[i] = TZ_ABBR_ERR_CHAR;
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 int
do_null_bootstrap_check(notify_tz_t *p)
{
if (bootstrap_port != MACH_PORT_NULL) {
return -1;
}
if (!p->null_bootstrap) {
p->null_bootstrap = 1;
p->is_set = 0;
return -1;
}
p->is_set = -1;
return 0;
}
static void
notify_check_tz(notify_tz_t *p)
{
unsigned int nstat;
int ncheck;
if (p->token < 0)
return;
if (do_null_bootstrap_check(p) == 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
}
#ifdef NOTIFY_TZ_DEBUG
NOTIFY_TZ_PRINTF("notify_check_tz: %s unchanged\n", (p == &lcl_notify) ? "lcl" : "gmt");
#endif
}
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 (do_null_bootstrap_check(p) == 0) {
return;
}
if (p->token >= 0)
notify_cancel(p->token);
if (!file || *file == 0) {
p->token = -1;
return;
}
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
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
#ifdef NOTIFY_TZ_LOG
NOTIFY_LOG("notify_register_check(%s) failed: %u\n", name, nstat);
#endif
return;
}
if (name != notify_tz_name) {
#ifdef NOTIFY_TZ_DEBUG
NOTIFY_TZ_PRINTF("notify_register_tz: monitor %s\n", file);
#endif
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
#ifdef NOTIFY_TZ_LOG
NOTIFY_LOG("notify_monitor_file(%s) failed: %u\n", file, nstat);
#endif
return;
}
}
notify_check(p->token, &ncheck);
}
#endif
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;
return _t1 - _t0 == SECSPERREPEAT;
}
static int
#ifdef NOTIFY_TZ
tzload(name, sp, path, doextend)
#else
tzload(name, sp, doextend)
#endif
const char * name;
struct state * const sp;
#ifdef NOTIFY_TZ
char * path;
#endif
register const int doextend;
{
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
if (name != NULL && issetugid() != 0)
if ((name[0] == ':' && name[1] == '/') ||
name[0] == '/' || strchr(name, '.'))
name = NULL;
#ifdef NOTIFY_TZ
if (path)
*path = 0;
#endif
if (name == NULL && (name = TZDEFAULT) == NULL)
return -1;
{
int doaccess;
struct stat stab;
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);
if (strchr(name, '.') != NULL)
doaccess = TRUE;
name = fullname;
}
#ifdef NOTIFY_TZ
if (path) {
if (strlen(name) > FILENAME_MAX)
return -1;
strcpy(path, name);
}
#endif
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
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 +
sp->timecnt +
sp->typecnt * 6 +
sp->charcnt +
sp->leapcnt * (stored + 4) +
ttisstdcnt +
ttisgmtcnt)
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';
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;
}
}
for (i = 0; i < sp->timecnt - 2; ++i)
if (sp->ats[i] > sp->ats[i + 1]) {
++i;
if (TYPE_SIGNED(time_t)) {
sp->timecnt = i;
} else {
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 (u->tzhead.tzh_version[0] == '\0')
break;
nread -= p - u->buf;
for (i = 0; i < nread; ++i)
u->buf[i] = p[i];
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(sp, a, b)
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
};
static const char *
getzname(strp, name, len)
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;
}
static const char *
getqzname(register const char *strp, const int delim)
{
register int c;
while ((c = *strp) != '\0' && c != delim)
++strp;
return strp;
}
static const char *
getnum(strp, nump, min, max)
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;
c = *++strp;
} while (is_digit(c));
if (num < min)
return NULL;
*nump = num;
return strp;
}
static const char *
getsecs(strp, secsp)
const char * strp;
long * const secsp;
{
int num;
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;
strp = getnum(strp, &num, 0, SECSPERMIN);
if (strp == NULL)
return NULL;
*secsp += num;
}
}
return strp;
}
static const char *
getoffset(strp, offsetp)
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;
if (neg)
*offsetp = -*offsetp;
return strp;
}
static const char *
getrule(strp, rulep)
const char * strp;
struct rule * const rulep;
{
if (*strp == 'J') {
rulep->r_type = JULIAN_DAY;
++strp;
strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
} else if (*strp == 'M') {
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)) {
rulep->r_type = DAY_OF_YEAR;
strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
} else return NULL;
if (strp == NULL)
return NULL;
if (*strp == '/') {
++strp;
strp = getsecs(strp, &rulep->r_time);
} else rulep->r_time = 2 * SECSPERHOUR;
return strp;
}
static time_t
transtime(janfirst, year, rulep, offset)
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:
value = janfirst + (rulep->r_day - 1) * SECSPERDAY;
if (leapyear && rulep->r_day >= 60)
value += SECSPERDAY;
break;
case DAY_OF_YEAR:
value = janfirst + rulep->r_day * SECSPERDAY;
break;
case MONTH_NTH_DAY_OF_WEEK:
value = janfirst;
for (i = 0; i < rulep->r_mon - 1; ++i)
value += mon_lengths[leapyear][i] * SECSPERDAY;
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;
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;
}
value += d * SECSPERDAY;
break;
}
return value + rulep->r_time + offset;
}
static int
tzparse(name, sp, lastditch)
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);
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;
else {
name = getoffset(name, &stdoffset);
if (name == NULL)
return -1;
}
}
#ifdef NOTIFY_TZ
load_result = tzload(TZDEFRULES, sp, NULL, FALSE);
#else
load_result = tzload(TZDEFRULES, sp, FALSE);
#endif
if (load_result != 0)
sp->leapcnt = 0;
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;
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;
*atp++ = starttime;
*typep++ = 0;
} else {
*atp++ = starttime;
*typep++ = 0;
*atp++ = endtime;
*typep++ = 1;
}
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;
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;
}
}
isdst = FALSE;
theiroffset = theirstdoffset;
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) {
} else {
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;
}
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;
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(sp, path)
#else
gmtload(sp)
#endif
struct state * const sp;
#ifdef NOTIFY_TZ
char *path;
#endif
{
#ifdef NOTIFY_TZ
if (tzload(gmt, sp, path, TRUE) != 0)
#else
if (tzload(gmt, sp, TRUE) != 0)
#endif
(void) tzparse(gmt, sp, TRUE);
}
static void
tzsetwall_basic(int rdlocked)
{
#ifdef NOTIFY_TZ
notify_check_tz(&lcl_notify);
#else
if (TZDEFAULT) {
static struct timespec last_mtimespec = {0, 0};
struct stat statbuf;
if (lstat(TZDEFAULT, &statbuf) == 0) {
if (statbuf.st_mtimespec.tv_sec > last_mtimespec.tv_sec ||
(statbuf.st_mtimespec.tv_sec == last_mtimespec.tv_sec &&
statbuf.st_mtimespec.tv_nsec > last_mtimespec.tv_nsec)) {
lcl_is_set = 0;
}
last_mtimespec = statbuf.st_mtimespec;
}
}
#endif
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();
_RWLOCK_UNLOCK(&lcl_rwlock);
if (rdlocked)
_RWLOCK_RDLOCK(&lcl_rwlock);
return;
}
}
#endif
#ifdef NOTIFY_TZ
{
char fullname[FILENAME_MAX + 1];
if (tzload((char *) NULL, lclptr, fullname, TRUE) != 0)
gmtload(lclptr, *fullname ? NULL : fullname);
notify_register_tz(fullname, &lcl_notify);
}
#else
if (tzload((char *) NULL, lclptr, TRUE) != 0)
gmtload(lclptr);
#endif
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
tzsetwall_basic(0);
}
__private_extern__ void
tzset_basic(int rdlocked)
{
const char * name;
name = getenv("TZ");
if (name == NULL) {
tzsetwall_basic(rdlocked);
return;
}
#ifdef NOTIFY_TZ
notify_check_tz(&lcl_notify);
#endif
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
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();
_RWLOCK_UNLOCK(&lcl_rwlock);
if (rdlocked)
_RWLOCK_RDLOCK(&lcl_rwlock);
return;
}
}
#endif
if (*name == '\0') {
lclptr->leapcnt = 0;
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
} else
#ifdef NOTIFY_TZ
{
char fullname[FILENAME_MAX + 1];
int parsedOK = FALSE;
if (tzload(name, lclptr, fullname, TRUE) != 0)
if (name[0] == ':' || !(parsedOK = tzparse(name, lclptr, FALSE) == 0))
(void) gmtload(lclptr, *fullname ? NULL : fullname);
notify_register_tz(parsedOK ? NULL : fullname, &lcl_notify);
}
#else
if (tzload(name, lclptr, TRUE) != 0)
if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)
(void) gmtload(lclptr);
#endif
settzname();
_RWLOCK_UNLOCK(&lcl_rwlock);
if (rdlocked)
_RWLOCK_RDLOCK(&lcl_rwlock);
}
void
tzset(void)
{
#ifdef NOTIFY_TZ_DEBUG
NOTIFY_TZ_PRINTF("tzset called TZ=%s\n", getenv("TZ"));
#endif
tzset_basic(0);
}
#ifdef __LP64__
__private_extern__ struct tm *
#else
__private_extern__ void
#endif
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
const time_t t = *timep;
#ifdef NOTIFY_TZ_DEBUG
NOTIFY_TZ_PRINTF("localsub called\n");
#endif
sp = lclptr;
#ifdef ALL_STATE
if (sp == NULL) {
#ifdef __LP64__
return gmtsub(timep, offset, tmp);
#else
gmtsub(timep, offset, tmp);
return;
#endif
}
#endif
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
return;
#endif
}
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;
result = localsub(&newt, offset, tmp);
if (result == tmp) {
#else
return;
localsub(&newt, offset, tmp);
{
#endif
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
return;
}
return;
#endif
}
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];
#ifdef __LP64__
result = timesub(&t, ttisp->tt_gmtoff, sp, tmp);
if (result == NULL)
return NULL;
#else
timesub(&t, ttisp->tt_gmtoff, sp, tmp);
#endif
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
#ifdef __LP64__
return result;
#endif
}
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
localsub(timep, 0L, p_tm);
#endif
_RWLOCK_UNLOCK(&lcl_rwlock);
return(p_tm);
} else {
tzset_basic(0);
#ifdef __LP64__
return localsub(timep, 0L, &tm);
#else
localsub(timep, 0L, &tm);
return(&tm);
#endif
}
}
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
localsub(timep, 0L, tmp);
#endif
_RWLOCK_UNLOCK(&lcl_rwlock);
return tmp;
}
static void
gmt_init(void)
{
#ifdef ALL_STATE
#ifdef NOTIFY_TZ
if (gmtptr == NULL)
#endif
gmtptr = (struct state *) calloc(1, sizeof *gmtptr);
if (gmtptr != NULL)
#endif
#ifdef NOTIFY_TZ
{
char fullname[FILENAME_MAX + 1];
gmtload(gmtptr, fullname);
notify_register_tz(fullname, &gmt_notify);
}
#else
gmtload(gmtptr);
#endif
}
#ifdef __LP64__
static struct tm *
#else
static void
#endif
gmtsub(timep, offset, tmp)
const time_t * const timep;
const long offset;
struct tm * const tmp;
{
#ifdef __LP64__
register struct tm * result;
#endif
#ifdef NOTIFY_TZ_DEBUG
NOTIFY_TZ_PRINTF("gmtsub called\n");
#endif
#ifdef NOTIFY_TZ
notify_check_tz(&gmt_notify);
#endif
pthread_once(&gmt_once, gmt_init);
#ifdef __LP64__
result = timesub(timep, offset, gmtptr, tmp);
if (result == NULL)
return NULL;
#else
timesub(timep, offset, gmtptr, tmp);
#endif
#ifdef TM_ZONE
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
#ifndef ALL_STATE
tmp->TM_ZONE = gmtptr->chars;
#endif
}
#endif
#ifdef __LP64__
return result;
#endif
}
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);
}
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
gmtsub(timep, 0L, p_tm);
return(p_tm);
#endif
}
else {
#ifdef __LP64__
return gmtsub(timep, 0L, &tm);
#else
gmtsub(timep, 0L, &tm);
return(&tm);
#endif
}
}
struct tm *
gmtime_r(const time_t *const timep, struct tm *tmp)
{
#ifdef __LP64__
return gmtsub(timep, 0L, tmp);
#else
gmtsub(timep, 0L, tmp);
return tmp;
#endif
}
#ifdef STD_INSPIRED
struct tm *
offtime(const time_t *const timep, const long offset)
{
#ifdef __LP64__
return gmtsub(timep, offset, &tm);
#else
gmtsub(timep, offset, &tm);
return &tm;
#endif
}
#endif
__unused static int
leaps_thru_end_of(y)
register const int y;
{
#ifdef __LP64__
return (y >= 0) ? (y / 4 - y / 100 + y / 400) :
-(leaps_thru_end_of(-(y + 1)) + 1);
#else
return (y / 4 - y / 100 + y / 400);
#endif
}
#ifdef __LP64__
static struct tm *
#else
static void
#endif
timesub(timep, offset, sp, tmp)
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
#ifndef ALL_STATE
i = sp->leapcnt;
#endif
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) {
days = -24855;
rem = -11648;
}
#endif
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);
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
#define LEAPS_THRU_END_OF(y) _LEAPS_THRU_END_OF(y)
#endif
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
tmp->tm_year = y - TM_YEAR_BASE;
#endif
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
#ifdef __LP64__
return tmp;
#endif
}
char *
ctime(const time_t *const timep)
{
#ifdef __LP64__
struct tm *tm = localtime(timep);
if (tm == NULL)
return NULL;
return asctime(tm);
#else
return asctime(localtime(timep));
#endif
}
char *
ctime_r(const time_t *const timep, char *buf)
{
struct tm mytm;
#ifdef __LP64__
if (localtime_r(timep, &mytm) == NULL)
return NULL;
return asctime_r(&mytm, buf);
#else
return asctime_r(localtime_r(timep, &mytm), buf);
#endif
}
#ifndef WRONG
#define WRONG (-1)
#endif
static int
increment_overflow(number, delta)
int * number;
int delta;
{
int number0;
number0 = *number;
*number += delta;
return (*number < number0) != (delta < 0);
}
static int
long_increment_overflow(number, delta)
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(atmp, btmp)
const struct tm * const atmp;
const struct tm * const btmp;
{
int result;
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
void(*funcp) (const time_t *, long, struct tm*),
#endif
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;
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;
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) {
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;
}
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) {
dir = (t > 0) ? 1 : -1;
} else dir = tmcomp(&mytm, &yourtm);
#else
(*funcp)(&t, offset, &mytm);
dir = tmcomp(&mytm, &yourtm);
if (dir != 0 && t == lo && t == hi)
return WRONG;
#endif
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;
if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
break;
#ifdef ALL_STATE
if (sp == NULL)
return WRONG;
#endif
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
(*funcp)(&newt, offset, &mytm);
#endif
if (tmcomp(&mytm, &yourtm) != 0)
continue;
if (mytm.tm_isdst != yourtm.tm_isdst)
continue;
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
(*funcp)(&t, offset, tmp);
#endif
*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
void (*const funcp)(const time_t *, long, struct tm *),
#endif
const long offset,
int *const okayp,
int unix03)
{
time_t t;
t = time2sub(tmp, funcp, offset, okayp, FALSE, unix03);
return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE, unix03);
}
__private_extern__ time_t
time1(tmp, funcp, offset, unix03)
struct tm * const tmp;
#ifdef __LP64__
struct tm * (* const funcp)(const time_t *, long, struct tm *);
#else
void (* const funcp)(const time_t *, long, struct tm *);
#endif
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
if (okay)
return t;
if (tmp->tm_isdst < 0)
tmp->tm_isdst = 0;
#endif
#ifndef PCTS
if (okay || tmp->tm_isdst < 0)
return t;
#endif
sp = (const struct state *) ((funcp == localsub) ? lclptr : gmtptr);
#ifdef ALL_STATE
if (sp == NULL)
return WRONG;
#endif
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
extern pthread_rwlock_t lcl_rwlock;
#endif
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;
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
#ifdef CMUCS
long
gtime(struct tm *const tmp)
{
const time_t t = mktime(tmp);
if (t == WRONG)
return -1;
return t;
}
#endif
#ifdef STD_INSPIRED
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();
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
#endif
#pragma clang diagnostic pop