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diff --git a/source4/lib/time.c b/source4/lib/time.c
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+/*
+ Unix SMB/CIFS implementation.
+ time handling functions
+ Copyright (C) Andrew Tridgell 1992-1998
+ Copyright (C) Stefan (metze) Metzmacher 2002
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+/*
+ This stuff was largely rewritten by Paul Eggert <eggert@twinsun.com>
+ in May 1996
+ */
+
+
+int extra_time_offset = 0;
+
+#ifndef CHAR_BIT
+#define CHAR_BIT 8
+#endif
+
+#ifndef TIME_T_MIN
+#define TIME_T_MIN ((time_t)0 < (time_t) -1 ? (time_t) 0 \
+ : ~ (time_t) 0 << (sizeof (time_t) * CHAR_BIT - 1))
+#endif
+#ifndef TIME_T_MAX
+#define TIME_T_MAX (~ (time_t) 0 - TIME_T_MIN)
+#endif
+
+void get_nttime_max(NTTIME *t)
+{
+ /* FIXME: This is incorrect */
+ unix_to_nt_time(t, get_time_t_max());
+}
+
+/*******************************************************************
+ External access to time_t_min and time_t_max.
+********************************************************************/
+
+time_t get_time_t_max(void)
+{
+ return TIME_T_MAX;
+}
+
+/*******************************************************************
+a gettimeofday wrapper
+********************************************************************/
+void GetTimeOfDay(struct timeval *tval)
+{
+#ifdef HAVE_GETTIMEOFDAY_TZ
+ gettimeofday(tval,NULL);
+#else
+ gettimeofday(tval);
+#endif
+}
+
+#define TM_YEAR_BASE 1900
+
+/*******************************************************************
+yield the difference between *A and *B, in seconds, ignoring leap seconds
+********************************************************************/
+static int tm_diff(struct tm *a, struct tm *b)
+{
+ int ay = a->tm_year + (TM_YEAR_BASE - 1);
+ int by = b->tm_year + (TM_YEAR_BASE - 1);
+ int intervening_leap_days =
+ (ay/4 - by/4) - (ay/100 - by/100) + (ay/400 - by/400);
+ int years = ay - by;
+ int days = 365*years + intervening_leap_days + (a->tm_yday - b->tm_yday);
+ int hours = 24*days + (a->tm_hour - b->tm_hour);
+ int minutes = 60*hours + (a->tm_min - b->tm_min);
+ int seconds = 60*minutes + (a->tm_sec - b->tm_sec);
+
+ return seconds;
+}
+
+/*******************************************************************
+ return the UTC offset in seconds west of UTC, or 0 if it cannot be determined
+ ******************************************************************/
+static int TimeZone(time_t t)
+{
+ struct tm *tm = gmtime(&t);
+ struct tm tm_utc;
+ if (!tm)
+ return 0;
+ tm_utc = *tm;
+ tm = localtime(&t);
+ if (!tm)
+ return 0;
+ return tm_diff(&tm_utc,tm);
+
+}
+
+static BOOL done_serverzone_init;
+
+/* Return the smb serverzone value */
+
+static int get_serverzone(void)
+{
+ static int serverzone;
+
+ if (!done_serverzone_init) {
+ serverzone = TimeZone(time(NULL));
+
+ if ((serverzone % 60) != 0) {
+ DEBUG(1,("WARNING: Your timezone is not a multiple of 1 minute.\n"));
+ }
+
+ DEBUG(4,("Serverzone is %d\n",serverzone));
+
+ done_serverzone_init = True;
+ }
+
+ return serverzone;
+}
+
+/* Re-read the smb serverzone value */
+
+static struct timeval start_time_hires;
+
+void TimeInit(void)
+{
+ done_serverzone_init = False;
+ get_serverzone();
+ /* Save the start time of this process. */
+ if (start_time_hires.tv_sec == 0 && start_time_hires.tv_usec == 0)
+ GetTimeOfDay(&start_time_hires);
+}
+
+/**********************************************************************
+ Return a timeval struct of the uptime of this process. As TimeInit is
+ done before a daemon fork then this is the start time from the parent
+ daemon start. JRA.
+***********************************************************************/
+
+void get_process_uptime(struct timeval *ret_time)
+{
+ struct timeval time_now_hires;
+
+ GetTimeOfDay(&time_now_hires);
+ ret_time->tv_sec = time_now_hires.tv_sec - start_time_hires.tv_sec;
+ ret_time->tv_usec = time_now_hires.tv_usec - start_time_hires.tv_usec;
+ if (time_now_hires.tv_usec < start_time_hires.tv_usec) {
+ ret_time->tv_sec -= 1;
+ ret_time->tv_usec = 1000000 + (time_now_hires.tv_usec - start_time_hires.tv_usec);
+ } else
+ ret_time->tv_usec = time_now_hires.tv_usec - start_time_hires.tv_usec;
+}
+
+/*******************************************************************
+return the same value as TimeZone, but it should be more efficient.
+
+We keep a table of DST offsets to prevent calling localtime() on each
+call of this function. This saves a LOT of time on many unixes.
+
+Updated by Paul Eggert <eggert@twinsun.com>
+********************************************************************/
+static int TimeZoneFaster(time_t t)
+{
+ static struct dst_table {time_t start,end; int zone;} *tdt, *dst_table = NULL;
+ static int table_size = 0;
+ int i;
+ int zone = 0;
+
+ if (t == 0) t = time(NULL);
+
+ /* Tunis has a 8 day DST region, we need to be careful ... */
+#define MAX_DST_WIDTH (365*24*60*60)
+#define MAX_DST_SKIP (7*24*60*60)
+
+ for (i=0;i<table_size;i++)
+ if (t >= dst_table[i].start && t <= dst_table[i].end) break;
+
+ if (i<table_size) {
+ zone = dst_table[i].zone;
+ } else {
+ time_t low,high;
+
+ zone = TimeZone(t);
+ tdt = (struct dst_table *)Realloc(dst_table,
+ sizeof(dst_table[0])*(i+1));
+ if (!tdt) {
+ DEBUG(0,("TimeZoneFaster: out of memory!\n"));
+ SAFE_FREE(dst_table);
+ table_size = 0;
+ } else {
+ dst_table = tdt;
+ table_size++;
+
+ dst_table[i].zone = zone;
+ dst_table[i].start = dst_table[i].end = t;
+
+ /* no entry will cover more than 6 months */
+ low = t - MAX_DST_WIDTH/2;
+ if (t < low)
+ low = TIME_T_MIN;
+
+ high = t + MAX_DST_WIDTH/2;
+ if (high < t)
+ high = TIME_T_MAX;
+
+ /* widen the new entry using two bisection searches */
+ while (low+60*60 < dst_table[i].start) {
+ if (dst_table[i].start - low > MAX_DST_SKIP*2)
+ t = dst_table[i].start - MAX_DST_SKIP;
+ else
+ t = low + (dst_table[i].start-low)/2;
+ if (TimeZone(t) == zone)
+ dst_table[i].start = t;
+ else
+ low = t;
+ }
+
+ while (high-60*60 > dst_table[i].end) {
+ if (high - dst_table[i].end > MAX_DST_SKIP*2)
+ t = dst_table[i].end + MAX_DST_SKIP;
+ else
+ t = high - (high-dst_table[i].end)/2;
+ if (TimeZone(t) == zone)
+ dst_table[i].end = t;
+ else
+ high = t;
+ }
+#if 0
+ DEBUG(1,("Added DST entry from %s ",
+ asctime(localtime(&dst_table[i].start))));
+ DEBUG(1,("to %s (%d)\n",asctime(localtime(&dst_table[i].end)),
+ dst_table[i].zone));
+#endif
+ }
+ }
+ return zone;
+}
+
+/****************************************************************************
+ return the UTC offset in seconds west of UTC, adjusted for extra time offset
+ **************************************************************************/
+int TimeDiff(time_t t)
+{
+ return TimeZoneFaster(t) + 60 * lp_time_offset();
+}
+
+
+/****************************************************************************
+ return the UTC offset in seconds west of UTC, adjusted for extra time
+ offset, for a local time value. If ut = lt + LocTimeDiff(lt), then
+ lt = ut - TimeDiff(ut), but the converse does not necessarily hold near
+ daylight savings transitions because some local times are ambiguous.
+ LocTimeDiff(t) equals TimeDiff(t) except near daylight savings transitions.
+ +**************************************************************************/
+static int LocTimeDiff(time_t lte)
+{
+ time_t lt = lte - 60 * lp_time_offset();
+ int d = TimeZoneFaster(lt);
+ time_t t = lt + d;
+
+ /* if overflow occurred, ignore all the adjustments so far */
+ if (((lte < lt) ^ (lp_time_offset() < 0)) | ((t < lt) ^ (d < 0)))
+ t = lte;
+
+ /* now t should be close enough to the true UTC to yield the right answer */
+ return TimeDiff(t);
+}
+
+
+/****************************************************************************
+try to optimise the localtime call, it can be quite expensive on some machines
+****************************************************************************/
+struct tm *LocalTime(time_t *t)
+{
+ time_t t2 = *t;
+
+ t2 -= TimeDiff(t2);
+
+ return(gmtime(&t2));
+}
+
+#define TIME_FIXUP_CONSTANT (369.0*365.25*24*60*60-(3.0*24*60*60+6.0*60*60))
+
+/****************************************************************************
+interpret an 8 byte "filetime" structure to a time_t
+It's originally in "100ns units since jan 1st 1601"
+
+It appears to be kludge-GMT (at least for file listings). This means
+its the GMT you get by taking a localtime and adding the
+serverzone. This is NOT the same as GMT in some cases. This routine
+converts this to real GMT.
+****************************************************************************/
+time_t nt_time_to_unix(const NTTIME *nt)
+{
+ double d;
+ time_t ret;
+ /* The next two lines are a fix needed for the
+ broken SCO compiler. JRA. */
+ time_t l_time_min = TIME_T_MIN;
+ time_t l_time_max = TIME_T_MAX;
+
+ if (nt->high == 0) return(0);
+
+ d = ((double)nt->high)*4.0*(double)(1<<30);
+ d += (nt->low&0xFFF00000);
+ d *= 1.0e-7;
+
+ /* now adjust by 369 years to make the secs since 1970 */
+ d -= TIME_FIXUP_CONSTANT;
+
+ if (!(l_time_min <= d && d <= l_time_max))
+ return(0);
+
+ ret = (time_t)(d+0.5);
+
+ /* this takes us from kludge-GMT to real GMT */
+ ret -= get_serverzone();
+ ret += LocTimeDiff(ret);
+
+ return(ret);
+}
+
+/****************************************************************************
+ Convert a NTTIME structure to a time_t.
+ It's originally in "100ns units".
+
+ This is an absolute version of the one above.
+ By absolute I mean, it doesn't adjust from 1/1/1601 to 1/1/1970
+ if the NTTIME was 5 seconds, the time_t is 5 seconds. JFM
+****************************************************************************/
+
+time_t nt_time_to_unix_abs(NTTIME *nt)
+{
+ double d;
+ time_t ret;
+ /* The next two lines are a fix needed for the
+ broken SCO compiler. JRA. */
+ time_t l_time_min = TIME_T_MIN;
+ time_t l_time_max = TIME_T_MAX;
+
+ if (nt->high == 0)
+ return(0);
+
+ if (nt->high==0x80000000 && nt->low==0)
+ return -1;
+
+ /* reverse the time */
+ /* it's a negative value, turn it to positive */
+ nt->high=~nt->high;
+ nt->low=~nt->low;
+
+ d = ((double)nt->high)*4.0*(double)(1<<30);
+ d += (nt->low&0xFFF00000);
+ d *= 1.0e-7;
+
+ if (!(l_time_min <= d && d <= l_time_max))
+ return(0);
+
+ ret = (time_t)(d+0.5);
+
+ return(ret);
+}
+
+/****************************************************************************
+put a 8 byte filetime from a time_t
+This takes real GMT as input and converts to kludge-GMT
+****************************************************************************/
+void unix_to_nt_time(NTTIME *nt, time_t t)
+{
+ double d;
+
+ if (t==0) {
+ nt->low = 0;
+ nt->high = 0;
+ return;
+ }
+ if (t == TIME_T_MAX) {
+ nt->low = 0xffffffff;
+ nt->high = 0x7fffffff;
+ return;
+ }
+ if (t == -1) {
+ nt->low = 0xffffffff;
+ nt->high = 0xffffffff;
+ return;
+ }
+
+ /* this converts GMT to kludge-GMT */
+ t -= TimeDiff(t) - get_serverzone();
+
+ d = (double)(t);
+ d += TIME_FIXUP_CONSTANT;
+ d *= 1.0e7;
+
+ nt->high = (uint32)(d * (1.0/(4.0*(double)(1<<30))));
+ nt->low = (uint32)(d - ((double)nt->high)*4.0*(double)(1<<30));
+}
+
+/****************************************************************************
+ Convert a time_t to a NTTIME structure
+
+ This is an absolute version of the one above.
+ By absolute I mean, it doesn't adjust from 1/1/1970 to 1/1/1601
+ If the nttime_t was 5 seconds, the NTTIME is 5 seconds. JFM
+****************************************************************************/
+
+void unix_to_nt_time_abs(NTTIME *nt, time_t t)
+{
+ double d;
+
+ if (t==0) {
+ nt->low = 0;
+ nt->high = 0;
+ return;
+ }
+
+ if (t == TIME_T_MAX) {
+ nt->low = 0xffffffff;
+ nt->high = 0x7fffffff;
+ return;
+ }
+
+ if (t == -1) {
+ /* that's what NT uses for infinite */
+ nt->low = 0x0;
+ nt->high = 0x80000000;
+ return;
+ }
+
+ d = (double)(t);
+ d *= 1.0e7;
+
+ nt->high = (uint32)(d * (1.0/(4.0*(double)(1<<30))));
+ nt->low = (uint32)(d - ((double)nt->high)*4.0*(double)(1<<30));
+
+ /* convert to a negative value */
+ nt->high=~nt->high;
+ nt->low=~nt->low;
+}
+
+
+/****************************************************************************
+take an NTTIME structure, containing high / low time. convert to unix time.
+lkclXXXX this may need 2 SIVALs not a memcpy. we'll see...
+****************************************************************************/
+void put_long_date(char *p,time_t t)
+{
+ NTTIME nt;
+ unix_to_nt_time(&nt, t);
+ SIVAL(p, 0, nt.low);
+ SIVAL(p, 4, nt.high);
+}
+
+/****************************************************************************
+check if it's a null mtime
+****************************************************************************/
+BOOL null_mtime(time_t mtime)
+{
+ if (mtime == 0 || mtime == (time_t)0xFFFFFFFF || mtime == (time_t)-1)
+ return True;
+ return False;
+}
+
+/*******************************************************************
+ create a 16 bit dos packed date
+********************************************************************/
+static uint16 make_dos_date1(struct tm *t)
+{
+ uint16 ret=0;
+ ret = (((unsigned)(t->tm_mon+1)) >> 3) | ((t->tm_year-80) << 1);
+ ret = ((ret&0xFF)<<8) | (t->tm_mday | (((t->tm_mon+1) & 0x7) << 5));
+ return ret;
+}
+
+/*******************************************************************
+ create a 16 bit dos packed time
+********************************************************************/
+static uint16 make_dos_time1(struct tm *t)
+{
+ uint16 ret=0;
+ ret = ((((unsigned)t->tm_min >> 3)&0x7) | (((unsigned)t->tm_hour) << 3));
+ ret = ((ret&0xFF)<<8) | ((t->tm_sec/2) | ((t->tm_min & 0x7) << 5));
+ return ret;
+}
+
+/*******************************************************************
+ create a 32 bit dos packed date/time from some parameters
+ This takes a GMT time and returns a packed localtime structure
+********************************************************************/
+static uint32 make_dos_date(time_t unixdate)
+{
+ struct tm *t;
+ uint32 ret=0;
+
+ if (unixdate == 0) {
+ return 0;
+ }
+
+ t = LocalTime(&unixdate);
+ if (!t) {
+ return 0xFFFFFFFF;
+ }
+
+ ret = make_dos_date1(t);
+ ret = ((ret&0xFFFF)<<16) | make_dos_time1(t);
+
+ return ret;
+}
+
+/*******************************************************************
+put a dos date into a buffer (time/date format)
+This takes GMT time and puts local time in the buffer
+********************************************************************/
+void put_dos_date(char *buf,int offset,time_t unixdate)
+{
+ uint32 x = make_dos_date(unixdate);
+ SIVAL(buf,offset,x);
+}
+
+/*******************************************************************
+put a dos date into a buffer (date/time format)
+This takes GMT time and puts local time in the buffer
+********************************************************************/
+void put_dos_date2(char *buf,int offset,time_t unixdate)
+{
+ uint32 x;
+ x = make_dos_date(unixdate);
+ x = ((x&0xFFFF)<<16) | ((x&0xFFFF0000)>>16);
+ SIVAL(buf,offset,x);
+}
+
+/*******************************************************************
+put a dos 32 bit "unix like" date into a buffer. This routine takes
+GMT and converts it to LOCAL time before putting it (most SMBs assume
+localtime for this sort of date)
+********************************************************************/
+void put_dos_date3(char *buf,int offset,time_t unixdate)
+{
+ if (!null_mtime(unixdate))
+ unixdate -= TimeDiff(unixdate);
+ SIVAL(buf,offset,unixdate);
+}
+
+/*******************************************************************
+ interpret a 32 bit dos packed date/time to some parameters
+********************************************************************/
+static void interpret_dos_date(uint32 date,int *year,int *month,int *day,int *hour,int *minute,int *second)
+{
+ uint32 p0,p1,p2,p3;
+
+ p0=date&0xFF; p1=((date&0xFF00)>>8)&0xFF;
+ p2=((date&0xFF0000)>>16)&0xFF; p3=((date&0xFF000000)>>24)&0xFF;
+
+ *second = 2*(p0 & 0x1F);
+ *minute = ((p0>>5)&0xFF) + ((p1&0x7)<<3);
+ *hour = (p1>>3)&0xFF;
+ *day = (p2&0x1F);
+ *month = ((p2>>5)&0xFF) + ((p3&0x1)<<3) - 1;
+ *year = ((p3>>1)&0xFF) + 80;
+}
+
+/*******************************************************************
+ create a unix date (int GMT) from a dos date (which is actually in
+ localtime)
+********************************************************************/
+time_t make_unix_date(void *date_ptr)
+{
+ uint32 dos_date=0;
+ struct tm t;
+ time_t ret;
+
+ dos_date = IVAL(date_ptr,0);
+
+ if (dos_date == 0) return (time_t)0;
+
+ interpret_dos_date(dos_date,&t.tm_year,&t.tm_mon,
+ &t.tm_mday,&t.tm_hour,&t.tm_min,&t.tm_sec);
+ t.tm_isdst = -1;
+
+ /* mktime() also does the local to GMT time conversion for us */
+ ret = mktime(&t);
+
+ return(ret);
+}
+
+/*******************************************************************
+like make_unix_date() but the words are reversed
+********************************************************************/
+time_t make_unix_date2(void *date_ptr)
+{
+ uint32 x,x2;
+
+ x = IVAL(date_ptr,0);
+ x2 = ((x&0xFFFF)<<16) | ((x&0xFFFF0000)>>16);
+ SIVAL(&x,0,x2);
+
+ return make_unix_date((void *)&x);
+}
+
+/*******************************************************************
+ create a unix GMT date from a dos date in 32 bit "unix like" format
+ these generally arrive as localtimes, with corresponding DST
+ ******************************************************************/
+time_t make_unix_date3(void *date_ptr)
+{
+ time_t t = (time_t)IVAL(date_ptr,0);
+ if (!null_mtime(t))
+ t += LocTimeDiff(t);
+ return t;
+}
+
+
+/***************************************************************************
+return a HTTP/1.0 time string
+ ***************************************************************************/
+char *http_timestring(TALLOC_CTX *mem_ctx, time_t t)
+{
+ char *buf;
+ fstring tempTime;
+ struct tm *tm = LocalTime(&t);
+
+ if (!tm)
+ buf = talloc_asprintf(mem_ctx,"%ld seconds since the Epoch",(long)t);
+ else
+#ifndef HAVE_STRFTIME
+ buf = talloc_strdup(mem_ctx, asctime(tm));
+ if(buf[strlen(buf)-1] == '\n')
+ buf[strlen(buf)-1] = 0;
+#else /* !HAVE_STRFTIME */
+ strftime(tempTime, sizeof(tempTime)-1, "%a, %d %b %Y %H:%M:%S %Z", tm);
+ buf = talloc_strdup(mem_ctx, tempTime);
+#endif /* !HAVE_STRFTIME */
+ return buf;
+}
+
+
+
+/****************************************************************************
+ Return the date and time as a string
+****************************************************************************/
+
+char *timestring(TALLOC_CTX *mem_ctx, BOOL hires)
+{
+ char *TimeBuf;
+ fstring tempTime;
+ struct timeval tp;
+ time_t t;
+ struct tm *tm;
+
+ if (hires) {
+ GetTimeOfDay(&tp);
+ t = (time_t)tp.tv_sec;
+ } else {
+ t = time(NULL);
+ }
+ tm = LocalTime(&t);
+ if (!tm) {
+ if (hires) {
+ TimeBuf = talloc_asprintf(mem_ctx,
+ "%ld.%06ld seconds since the Epoch",
+ (long)tp.tv_sec,
+ (long)tp.tv_usec);
+ } else {
+ TimeBuf = talloc_asprintf(mem_ctx,
+ "%ld seconds since the Epoch",
+ (long)t);
+ }
+ } else {
+#ifdef HAVE_STRFTIME
+ if (hires) {
+ strftime(tempTime,sizeof(tempTime)-1,"%Y/%m/%d %H:%M:%S",tm);
+ TimeBuf = talloc_asprintf(mem_ctx, "%s.%06ld",
+ tempTime, (long)tp.tv_usec);
+ } else {
+ strftime(tempTime,100,"%Y/%m/%d %H:%M:%S",tm);
+ TimeBuf = talloc_strdup(mem_ctx, tempTime);
+ }
+#else
+ if (hires) {
+ TimeBuf = talloc_asprintf(mem_ctx,
+ "%s.%06ld",
+ asctime(tm),
+ (long)tp.tv_usec);
+ } else {
+ TimeBuf = talloc_strdup(mem_ctx, asctime(tm));
+ }
+#endif
+ }
+ return(TimeBuf);
+}
+
+/****************************************************************************
+ return the best approximation to a 'create time' under UNIX from a stat
+ structure.
+****************************************************************************/
+
+time_t get_create_time(SMB_STRUCT_STAT *st,BOOL fake_dirs)
+{
+ time_t ret, ret1;
+
+ if(S_ISDIR(st->st_mode) && fake_dirs)
+ return (time_t)315493200L; /* 1/1/1980 */
+
+ ret = MIN(st->st_ctime, st->st_mtime);
+ ret1 = MIN(ret, st->st_atime);
+
+ if(ret1 != (time_t)0)
+ return ret1;
+
+ /*
+ * One of ctime, mtime or atime was zero (probably atime).
+ * Just return MIN(ctime, mtime).
+ */
+ return ret;
+}
+
+/****************************************************************************
+initialise an NTTIME to -1, which means "unknown" or "don't expire"
+****************************************************************************/
+
+void init_nt_time(NTTIME *nt)
+{
+ nt->high = 0x7FFFFFFF;
+ nt->low = 0xFFFFFFFF;
+}
+
+/****************************************************************************
+check if NTTIME is 0
+****************************************************************************/
+BOOL nt_time_is_zero(NTTIME *nt)
+{
+ if(nt->high==0)
+ return True;
+ return False;
+}
+
+/*
+ return a talloced string representing a NTTIME for human consumption
+*/
+const char *nt_time_string(TALLOC_CTX *mem_ctx, const NTTIME *nt)
+{
+ time_t t = nt_time_to_unix(nt);
+ return talloc_strdup(mem_ctx, http_timestring(mem_ctx, t));
+}
+