--- /dev/null
+/*
+ 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.
+******************************************************************/
+
+int get_time_zone(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) + 60*extra_time_offset;
+}
+
+/*******************************************************************
+ Accessor function for the server time zone offset.
+ set_server_zone_offset() must have been called first.
+******************************************************************/
+
+static int server_zone_offset;
+
+int get_server_zone_offset(void)
+{
+ return server_zone_offset;
+}
+
+/*******************************************************************
+ Initialize the server time zone offset. Called when a client connects.
+******************************************************************/
+
+int set_server_zone_offset(time_t t)
+{
+ server_zone_offset = get_time_zone(t);
+ return server_zone_offset;
+}
+
+/*******************************************************************
+ Re-read the smb serverzone value.
+******************************************************************/
+
+static struct timeval start_time_hires;
+
+void TimeInit(void)
+{
+ set_server_zone_offset(time(NULL));
+
+ DEBUG(4,("TimeInit: Serverzone is %d\n", server_zone_offset));
+
+ /* 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;
+ }
+}
+
+#if 0
+/****************************************************************************
+ Return the UTC offset in seconds west of UTC, adjusted for extra time offset.
+**************************************************************************/
+
+int TimeDiff(time_t t)
+{
+ return get_time_zone(t);
+}
+#endif
+
+#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"
+
+ An 8 byte value of 0xffffffffffffffff will be returned as (time_t)0.
+
+ Returns GMT.
+****************************************************************************/
+
+time_t nt_time_to_unix(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 || (nt->high == 0xffffffff && nt->low == 0xffffffff)) {
+ 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 (d <= l_time_min) {
+ return (l_time_min);
+ }
+
+ if (d >= l_time_max) {
+ return (l_time_max);
+ }
+
+ ret = (time_t)(d+0.5);
+ 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 (time_t)-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);
+}
+
+/****************************************************************************
+ Interprets an nt time into a unix time_t.
+ Differs from nt_time_to_unix in that an 8 byte value of 0xffffffffffffffff
+ will be returned as (time_t)-1, whereas nt_time_to_unix returns 0 in this case.
+****************************************************************************/
+
+time_t interpret_long_date(char *p)
+{
+ NTTIME nt;
+ nt.low = IVAL(p,0);
+ nt.high = IVAL(p,4);
+ if (nt.low == 0xFFFFFFFF && nt.high == 0xFFFFFFFF) {
+ return (time_t)-1;
+ }
+ return nt_time_to_unix(&nt);
+}
+
+/****************************************************************************
+ Put a 8 byte filetime from a time_t. Uses 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 == (time_t)-1) {
+ nt->low = 0xffffffff;
+ nt->high = 0xffffffff;
+ return;
+ }
+
+ 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 == (time_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 a Unix time and convert to an NTTIME structure and place in buffer
+ pointed to by p.
+****************************************************************************/
+
+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, int zone_offset)
+{
+ struct tm *t;
+ uint32 ret=0;
+
+ if (unixdate == 0) {
+ return 0;
+ }
+
+ unixdate -= zone_offset;
+ t = gmtime(&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.
+********************************************************************/
+
+static void put_dos_date(char *buf,int offset,time_t unixdate, int zone_offset)
+{
+ uint32 x = make_dos_date(unixdate, zone_offset);
+ 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.
+********************************************************************/
+
+static void put_dos_date2(char *buf,int offset,time_t unixdate, int zone_offset)
+{
+ uint32 x = make_dos_date(unixdate, zone_offset);
+ 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)
+********************************************************************/
+
+static void put_dos_date3(char *buf,int offset,time_t unixdate, int zone_offset)
+{
+ if (!null_mtime(unixdate)) {
+ unixdate -= zone_offset;
+ }
+ 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).
+********************************************************************/
+
+static time_t make_unix_date(void *date_ptr, int zone_offset)
+{
+ uint32 dos_date=0;
+ struct tm t;
+ time_t ret;
+
+ dos_date = IVAL(date_ptr,0);
+
+ if (dos_date == 0) {
+ return 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;
+
+ ret = timegm(&t);
+
+ ret += zone_offset;
+
+ return(ret);
+}
+
+/*******************************************************************
+ Like make_unix_date() but the words are reversed.
+********************************************************************/
+
+static time_t make_unix_date2(void *date_ptr, int zone_offset)
+{
+ 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, zone_offset));
+}
+
+/*******************************************************************
+ Create a unix GMT date from a dos date in 32 bit "unix like" format
+ these generally arrive as localtimes, with corresponding DST.
+******************************************************************/
+
+static time_t make_unix_date3(void *date_ptr, int zone_offset)
+{
+ time_t t = (time_t)IVAL(date_ptr,0);
+ if (!null_mtime(t)) {
+ t += zone_offset;
+ }
+ return(t);
+}
+
+/***************************************************************************
+ Server versions of the above functions.
+***************************************************************************/
+
+void srv_put_dos_date(char *buf,int offset,time_t unixdate)
+{
+ put_dos_date(buf, offset, unixdate, server_zone_offset);
+}
+
+void srv_put_dos_date2(char *buf,int offset, time_t unixdate)
+{
+ put_dos_date2(buf, offset, unixdate, server_zone_offset);
+}
+
+void srv_put_dos_date3(char *buf,int offset,time_t unixdate)
+{
+ put_dos_date3(buf, offset, unixdate, server_zone_offset);
+}
+
+time_t srv_make_unix_date(void *date_ptr)
+{
+ return make_unix_date(date_ptr, server_zone_offset);
+}
+
+time_t srv_make_unix_date2(void *date_ptr)
+{
+ return make_unix_date2(date_ptr, server_zone_offset);
+}
+
+time_t srv_make_unix_date3(void *date_ptr)
+{
+ return make_unix_date3(date_ptr, server_zone_offset);
+}
+
+/***************************************************************************
+ Client versions of the above functions.
+***************************************************************************/
+
+void cli_put_dos_date(struct cli_state *cli, char *buf, int offset, time_t unixdate)
+{
+ put_dos_date(buf, offset, unixdate, cli->serverzone);
+}
+
+void cli_put_dos_date2(struct cli_state *cli, char *buf, int offset, time_t unixdate)
+{
+ put_dos_date2(buf, offset, unixdate, cli->serverzone);
+}
+
+void cli_put_dos_date3(struct cli_state *cli, char *buf, int offset, time_t unixdate)
+{
+ put_dos_date3(buf, offset, unixdate, cli->serverzone);
+}
+
+time_t cli_make_unix_date(struct cli_state *cli, void *date_ptr)
+{
+ return make_unix_date(date_ptr, cli->serverzone);
+}
+
+time_t cli_make_unix_date2(struct cli_state *cli, void *date_ptr)
+{
+ return make_unix_date2(date_ptr, cli->serverzone);
+}
+
+time_t cli_make_unix_date3(struct cli_state *cli, void *date_ptr)
+{
+ return make_unix_date3(date_ptr, cli->serverzone);
+}
+
+/***************************************************************************
+ Return a HTTP/1.0 time string.
+***************************************************************************/
+
+char *http_timestring(time_t t)
+{
+ static fstring buf;
+ struct tm *tm = localtime(&t);
+
+ if (!tm)
+ slprintf(buf,sizeof(buf)-1,"%ld seconds since the Epoch",(long)t);
+ else
+#ifndef HAVE_STRFTIME
+ fstrcpy(buf, asctime(tm));
+ if(buf[strlen(buf)-1] == '\n')
+ buf[strlen(buf)-1] = 0;
+#else /* !HAVE_STRFTIME */
+ strftime(buf, sizeof(buf)-1, "%a, %d %b %Y %H:%M:%S %Z", tm);
+#endif /* !HAVE_STRFTIME */
+ return buf;
+}
+
+/****************************************************************************
+ Return the date and time as a string
+****************************************************************************/
+
+char *timestring(BOOL hires)
+{
+ static fstring TimeBuf;
+ 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) {
+ slprintf(TimeBuf,
+ sizeof(TimeBuf)-1,
+ "%ld.%06ld seconds since the Epoch",
+ (long)tp.tv_sec,
+ (long)tp.tv_usec);
+ } else {
+ slprintf(TimeBuf,
+ sizeof(TimeBuf)-1,
+ "%ld seconds since the Epoch",
+ (long)t);
+ }
+ } else {
+#ifdef HAVE_STRFTIME
+ if (hires) {
+ strftime(TimeBuf,sizeof(TimeBuf)-1,"%Y/%m/%d %H:%M:%S",tm);
+ slprintf(TimeBuf+strlen(TimeBuf),
+ sizeof(TimeBuf)-1 - strlen(TimeBuf),
+ ".%06ld",
+ (long)tp.tv_usec);
+ } else {
+ strftime(TimeBuf,sizeof(TimeBuf)-1,"%Y/%m/%d %H:%M:%S",tm);
+ }
+#else
+ if (hires) {
+ slprintf(TimeBuf,
+ sizeof(TimeBuf)-1,
+ "%s.%06ld",
+ asctime(tm),
+ (long)tp.tv_usec);
+ } else {
+ fstrcpy(TimeBuf, 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;
+}
+
+/****************************************************************************
+ Check if two NTTIMEs are the same.
+****************************************************************************/
+
+BOOL nt_time_equals(NTTIME *nt1, NTTIME *nt2)
+{
+ return (nt1->high == nt2->high && nt1->low == nt2->low);
+}
+
+/****************************************************************************
+ Return a timeval difference in usec.
+****************************************************************************/
+
+SMB_BIG_INT usec_time_diff(const struct timeval *larget, const struct timeval *smallt)
+{
+ SMB_BIG_INT sec_diff = larget->tv_sec - smallt->tv_sec;
+ return (sec_diff * 1000000) + (SMB_BIG_INT)(larget->tv_usec - smallt->tv_usec);
+}
+
+/****************************************************************************
+ Return a timeval struct with the given elements.
+****************************************************************************/
+
+struct timeval timeval_set(uint32_t secs, uint32_t usecs)
+{
+ struct timeval tv;
+ tv.tv_sec = secs;
+ tv.tv_usec = usecs;
+ return tv;
+}
+
+/****************************************************************************
+ Return a zero timeval.
+****************************************************************************/
+
+struct timeval timeval_zero(void)
+{
+ return timeval_set(0,0);
+}
+
+/****************************************************************************
+ Return True if a timeval is zero.
+****************************************************************************/
+
+BOOL timeval_is_zero(const struct timeval *tv)
+{
+ return tv->tv_sec == 0 && tv->tv_usec == 0;
+}
+
+/****************************************************************************
+ Return a timeval for the current time.
+****************************************************************************/
+
+struct timeval timeval_current(void)
+{
+ struct timeval tv;
+ GetTimeOfDay(&tv);
+ return tv;
+}
+
+/****************************************************************************
+ Return a timeval ofs microseconds after tv.
+****************************************************************************/
+
+struct timeval timeval_add(const struct timeval *tv,
+ uint32_t secs, uint32_t usecs)
+{
+ struct timeval tv2 = *tv;
+ tv2.tv_sec += secs;
+ tv2.tv_usec += usecs;
+ tv2.tv_sec += tv2.tv_usec / 1000000;
+ tv2.tv_usec = tv2.tv_usec % 1000000;
+ return tv2;
+}
+
+/****************************************************************************
+ Return the sum of two timeval structures.
+****************************************************************************/
+
+struct timeval timeval_sum(const struct timeval *tv1,
+ const struct timeval *tv2)
+{
+ return timeval_add(tv1, tv2->tv_sec, tv2->tv_usec);
+}
+
+/****************************************************************************
+ Return a timeval secs/usecs into the future.
+****************************************************************************/
+
+struct timeval timeval_current_ofs(uint32_t secs, uint32_t usecs)
+{
+ struct timeval tv = timeval_current();
+ return timeval_add(&tv, secs, usecs);
+}
+
+/****************************************************************************
+ Compare two timeval structures.
+ Return -1 if tv1 < tv2
+ Return 0 if tv1 == tv2
+ Return 1 if tv1 > tv2
+****************************************************************************/
+
+int timeval_compare(const struct timeval *tv1, const struct timeval *tv2)
+{
+ if (tv1->tv_sec > tv2->tv_sec) {
+ return 1;
+ }
+ if (tv1->tv_sec < tv2->tv_sec) {
+ return -1;
+ }
+ if (tv1->tv_usec > tv2->tv_usec) {
+ return 1;
+ }
+ if (tv1->tv_usec < tv2->tv_usec) {
+ return -1;
+ }
+ return 0;
+}
+
+/****************************************************************************
+ Return the difference between two timevals as a timeval.
+ If tv1 comes after tv2, then return a zero timeval
+ (this is *tv2 - *tv1).
+****************************************************************************/
+
+struct timeval timeval_until(const struct timeval *tv1,
+ const struct timeval *tv2)
+{
+ struct timeval t;
+ if (timeval_compare(tv1, tv2) >= 0) {
+ return timeval_zero();
+ }
+ t.tv_sec = tv2->tv_sec - tv1->tv_sec;
+ if (tv1->tv_usec > tv2->tv_usec) {
+ t.tv_sec--;
+ t.tv_usec = 1000000 - (tv1->tv_usec - tv2->tv_usec);
+ } else {
+ t.tv_usec = tv2->tv_usec - tv1->tv_usec;
+ }
+ return t;
+}
+
+/****************************************************************************
+ Return the lesser of two timevals.
+****************************************************************************/
+
+struct timeval timeval_min(const struct timeval *tv1,
+ const struct timeval *tv2)
+{
+ if (tv1->tv_sec < tv2->tv_sec) {
+ return *tv1;
+ }
+ if (tv1->tv_sec > tv2->tv_sec) {
+ return *tv2;
+ }
+ if (tv1->tv_usec < tv2->tv_usec) {
+ return *tv1;
+ }
+ return *tv2;
+}
+
+/****************************************************************************
+ Return the greater of two timevals.
+****************************************************************************/
+
+struct timeval timeval_max(const struct timeval *tv1,
+ const struct timeval *tv2)
+{
+ if (tv1->tv_sec > tv2->tv_sec) {
+ return *tv1;
+ }
+ if (tv1->tv_sec < tv2->tv_sec) {
+ return *tv2;
+ }
+ if (tv1->tv_usec > tv2->tv_usec) {
+ return *tv1;
+ }
+ return *tv2;
+}
+
+/****************************************************************************
+ Convert ASN.1 GeneralizedTime string to unix-time.
+ Returns 0 on failure; Currently ignores timezone.
+****************************************************************************/
+
+time_t generalized_to_unix_time(const char *str)
+{
+ struct tm tm;
+
+ ZERO_STRUCT(tm);
+
+ if (sscanf(str, "%4d%2d%2d%2d%2d%2d",
+ &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
+ &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
+ return 0;
+ }
+ tm.tm_year -= 1900;
+ tm.tm_mon -= 1;
+
+ return timegm(&tm);
+}
projects / samba / blobdiff