Lots of changes!

- add faq info on NT printer handling
- add "delete readonly" option to help rcs users
- add stuff to man pages on new printer options
- add "proxy name resolution" option
- add "command string" -c option to smbclient (thanks Ken)
- split time functions into time.c
- rearrange the quotas stuff a bit and fix some bugs
- complete rehash of the time handling code thanks to Paul Eggert
- fix nmblookup output a bit
- add plp print queue parsing from Bertrand Wallrich

1 files changed, 495 insertions, 0 deletions

diff --git a/source/lib/time.c b/source/lib/time.c
new file mode 100644
index 00000000000..0b6e6df9b07
--- /dev/null
+++ b/source/lib/time.c
@@ -0,0 +1,495 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 1.9.
+   time handling functions
+   Copyright (C) Andrew Tridgell 1992-1995
+   
+   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 serverzone=0;
+int extra_time_offset = 0;
+
+extern int DEBUGLEVEL;
+
+#ifndef CHAR_BIT
+#define CHAR_BIT 8
+#endif
+
+#ifndef TIME_T_MIN
+#define TIME_T_MIN (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
+
+
+
+/*******************************************************************
+a gettimeofday wrapper
+********************************************************************/
+void GetTimeOfDay(struct timeval *tval)
+{
+#ifdef GETTIMEOFDAY1
+  gettimeofday(tval);
+#else
+  gettimeofday(tval,NULL);
+#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
+  ******************************************************************/
+static int TimeZone(time_t t)
+{
+  struct tm tm_utc = *(gmtime(&t));
+  return tm_diff(&tm_utc,localtime(&t));
+}
+
+
+/*******************************************************************
+init the time differences
+********************************************************************/
+void TimeInit(void)
+{
+  serverzone = TimeZone(time(NULL));
+  DEBUG(4,("Serverzone is %d\n",serverzone));
+}
+
+
+/*******************************************************************
+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;} *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);
+    dst_table = (struct dst_table *)Realloc(dst_table,
+					      sizeof(dst_table[0])*(i+1));
+    if (!dst_table) {
+      table_size = 0;
+    } else {
+      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;
+      
+      /* 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;
+      }
+
+      high = low + MAX_DST_WIDTH/2;
+      if (high < t)
+	high = TIME_T_MAX;
+      
+      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*extra_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*extra_time_offset;
+  int d = TimeZoneFaster(lt);
+  time_t t = lt + d;
+
+  /* if overflow occurred, ignore all the adjustments so far */
+  if (((lte < lt) ^ (extra_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 expenive 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 interpret_long_date(char *p)
+{
+  double d;
+  time_t ret;
+  uint32 tlow,thigh;
+  tlow = IVAL(p,0);
+  thigh = IVAL(p,4);
+
+  if (thigh == 0) return(0);
+
+  d = ((double)thigh)*4.0*(double)(1<<30);
+  d += (tlow&0xFFF00000);
+  d *= 1.0e-7;
+ 
+  /* now adjust by 369 years to make the secs since 1970 */
+  d -= TIME_FIXUP_CONSTANT;
+
+  if (!(TIME_T_MIN <= d && d <= TIME_T_MAX))
+    return(0);
+
+  ret = (time_t)(d+0.5);
+
+  /* this takes us from kludge-GMT to real GMT */
+  ret -= serverzone;
+  ret += LocTimeDiff(ret);
+
+  return(ret);
+}
+
+
+/****************************************************************************
+put a 8 byte filetime from a time_t
+This takes real GMT as input and converts to kludge-GMT
+****************************************************************************/
+void put_long_date(char *p,time_t t)
+{
+  uint32 tlow,thigh;
+  double d;
+
+  if (t==0) {
+    SIVAL(p,0,0); SIVAL(p,4,0);
+    return;
+  }
+
+  /* this converts GMT to kludge-GMT */
+  t -= TimeDiff(t) - serverzone; 
+
+  d = (double) (t);
+
+  d += TIME_FIXUP_CONSTANT;
+
+  d *= 1.0e7;
+
+  thigh = (uint32)(d * (1.0/(4.0*(double)(1<<30))));
+  tlow = (uint32)(d - ((double)thigh)*4.0*(double)(1<<30));
+
+  SIVAL(p,0,tlow);
+  SIVAL(p,4,thigh);
+}
+
+
+/****************************************************************************
+check if it's a null mtime
+****************************************************************************/
+static BOOL null_mtime(time_t mtime)
+{
+  if (mtime == 0 || mtime == 0xFFFFFFFF || mtime == (time_t)-1)
+    return(True);
+  return(False);
+}
+
+/*******************************************************************
+  create a 16 bit dos packed date
+********************************************************************/
+static uint16 make_dos_date1(time_t unixdate,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(time_t unixdate,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;
+
+  t = LocalTime(&unixdate);
+
+  ret = make_dos_date1(unixdate,t);
+  ret = ((ret&0xFFFF)<<16) | make_dos_time1(unixdate,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 = 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(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 = IVAL(date_ptr,0);
+  if (!null_mtime(t))
+    t += LocTimeDiff(t);
+  return(t);
+}
+
+/****************************************************************************
+set the time on a file
+****************************************************************************/
+BOOL set_filetime(char *fname,time_t mtime)
+{  
+  struct utimbuf times;
+
+  if (null_mtime(mtime)) return(True);
+
+  times.modtime = times.actime = mtime;
+
+  if (sys_utime(fname,&times)) {
+    DEBUG(4,("set_filetime(%s) failed: %s\n",fname,strerror(errno)));
+  }
+    
+  return(True);
+}
+
+
+/****************************************************************************
+  return the date and time as a string
+****************************************************************************/
+char *timestring(void )
+{
+  static char TimeBuf[100];
+  time_t t = time(NULL);
+  struct tm *tm = LocalTime(&t);
+
+#ifdef NO_STRFTIME
+  strcpy(TimeBuf, asctime(tm));
+#elif defined(CLIX) || defined(CONVEX)
+  strftime(TimeBuf,100,"%m/%d/%y %I:%M:%S %p",tm);
+#elif defined(AMPM)
+  strftime(TimeBuf,100,"%D %r",tm);
+#elif defined(TZ_TIME)
+  {
+    int zone = TimeDiff(t);
+    int absZoneMinutes = (zone<0 ? -zone : zone) / 60;
+    size_t len = strftime(TimeBuf,sizeof(TimeBuf)-6,"%D %T",tm);
+    sprintf(TimeBuf+len," %c%02d%02d",
+	    zone<0?'+':'-',absZoneMinutes/60,absZoneMinutes%60);
+  }
+#else
+  strftime(TimeBuf,100,"%D %T",tm);
+#endif
+  return(TimeBuf);
+}
+