mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-12-30 14:12:06 +00:00
aa74f6754a
openbsd-compat/openbsd-compat.h openbsd-compat/strptime.c] Add strptime to the compat library which helps on platforms like old IRIX. Based on work by djm, tested by Tom Christensen.
402 lines
9.3 KiB
C
402 lines
9.3 KiB
C
/* $OpenBSD: strptime.c,v 1.12 2008/06/26 05:42:05 ray Exp $ */
|
|
/* $NetBSD: strptime.c,v 1.12 1998/01/20 21:39:40 mycroft Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code was contributed to The NetBSD Foundation by Klaus Klein.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/* OPENBSD ORIGINAL: lib/libc/time/strptime.c */
|
|
|
|
#include "includes.h"
|
|
|
|
#ifndef HAVE_STRPTIME
|
|
|
|
#define TM_YEAR_BASE 1900 /* from tzfile.h */
|
|
|
|
#include <ctype.h>
|
|
#include <locale.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
/* #define _ctloc(x) (_CurrentTimeLocale->x) */
|
|
|
|
/*
|
|
* We do not implement alternate representations. However, we always
|
|
* check whether a given modifier is allowed for a certain conversion.
|
|
*/
|
|
#define _ALT_E 0x01
|
|
#define _ALT_O 0x02
|
|
#define _LEGAL_ALT(x) { if (alt_format & ~(x)) return (0); }
|
|
|
|
|
|
static int _conv_num(const unsigned char **, int *, int, int);
|
|
static char *_strptime(const char *, const char *, struct tm *, int);
|
|
|
|
|
|
char *
|
|
strptime(const char *buf, const char *fmt, struct tm *tm)
|
|
{
|
|
return(_strptime(buf, fmt, tm, 1));
|
|
}
|
|
|
|
static char *
|
|
_strptime(const char *buf, const char *fmt, struct tm *tm, int initialize)
|
|
{
|
|
unsigned char c;
|
|
const unsigned char *bp;
|
|
size_t len;
|
|
int alt_format, i;
|
|
static int century, relyear;
|
|
|
|
if (initialize) {
|
|
century = TM_YEAR_BASE;
|
|
relyear = -1;
|
|
}
|
|
|
|
bp = (unsigned char *)buf;
|
|
while ((c = *fmt) != '\0') {
|
|
/* Clear `alternate' modifier prior to new conversion. */
|
|
alt_format = 0;
|
|
|
|
/* Eat up white-space. */
|
|
if (isspace(c)) {
|
|
while (isspace(*bp))
|
|
bp++;
|
|
|
|
fmt++;
|
|
continue;
|
|
}
|
|
|
|
if ((c = *fmt++) != '%')
|
|
goto literal;
|
|
|
|
|
|
again: switch (c = *fmt++) {
|
|
case '%': /* "%%" is converted to "%". */
|
|
literal:
|
|
if (c != *bp++)
|
|
return (NULL);
|
|
|
|
break;
|
|
|
|
/*
|
|
* "Alternative" modifiers. Just set the appropriate flag
|
|
* and start over again.
|
|
*/
|
|
case 'E': /* "%E?" alternative conversion modifier. */
|
|
_LEGAL_ALT(0);
|
|
alt_format |= _ALT_E;
|
|
goto again;
|
|
|
|
case 'O': /* "%O?" alternative conversion modifier. */
|
|
_LEGAL_ALT(0);
|
|
alt_format |= _ALT_O;
|
|
goto again;
|
|
|
|
/*
|
|
* "Complex" conversion rules, implemented through recursion.
|
|
*/
|
|
#if 0
|
|
case 'c': /* Date and time, using the locale's format. */
|
|
_LEGAL_ALT(_ALT_E);
|
|
if (!(bp = _strptime(bp, _ctloc(d_t_fmt), tm, 0)))
|
|
return (NULL);
|
|
break;
|
|
#endif
|
|
case 'D': /* The date as "%m/%d/%y". */
|
|
_LEGAL_ALT(0);
|
|
if (!(bp = _strptime(bp, "%m/%d/%y", tm, 0)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'R': /* The time as "%H:%M". */
|
|
_LEGAL_ALT(0);
|
|
if (!(bp = _strptime(bp, "%H:%M", tm, 0)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'r': /* The time as "%I:%M:%S %p". */
|
|
_LEGAL_ALT(0);
|
|
if (!(bp = _strptime(bp, "%I:%M:%S %p", tm, 0)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'T': /* The time as "%H:%M:%S". */
|
|
_LEGAL_ALT(0);
|
|
if (!(bp = _strptime(bp, "%H:%M:%S", tm, 0)))
|
|
return (NULL);
|
|
break;
|
|
#if 0
|
|
case 'X': /* The time, using the locale's format. */
|
|
_LEGAL_ALT(_ALT_E);
|
|
if (!(bp = _strptime(bp, _ctloc(t_fmt), tm, 0)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'x': /* The date, using the locale's format. */
|
|
_LEGAL_ALT(_ALT_E);
|
|
if (!(bp = _strptime(bp, _ctloc(d_fmt), tm, 0)))
|
|
return (NULL);
|
|
break;
|
|
#endif
|
|
/*
|
|
* "Elementary" conversion rules.
|
|
*/
|
|
#if 0
|
|
case 'A': /* The day of week, using the locale's form. */
|
|
case 'a':
|
|
_LEGAL_ALT(0);
|
|
for (i = 0; i < 7; i++) {
|
|
/* Full name. */
|
|
len = strlen(_ctloc(day[i]));
|
|
if (strncasecmp(_ctloc(day[i]), bp, len) == 0)
|
|
break;
|
|
|
|
/* Abbreviated name. */
|
|
len = strlen(_ctloc(abday[i]));
|
|
if (strncasecmp(_ctloc(abday[i]), bp, len) == 0)
|
|
break;
|
|
}
|
|
|
|
/* Nothing matched. */
|
|
if (i == 7)
|
|
return (NULL);
|
|
|
|
tm->tm_wday = i;
|
|
bp += len;
|
|
break;
|
|
|
|
case 'B': /* The month, using the locale's form. */
|
|
case 'b':
|
|
case 'h':
|
|
_LEGAL_ALT(0);
|
|
for (i = 0; i < 12; i++) {
|
|
/* Full name. */
|
|
len = strlen(_ctloc(mon[i]));
|
|
if (strncasecmp(_ctloc(mon[i]), bp, len) == 0)
|
|
break;
|
|
|
|
/* Abbreviated name. */
|
|
len = strlen(_ctloc(abmon[i]));
|
|
if (strncasecmp(_ctloc(abmon[i]), bp, len) == 0)
|
|
break;
|
|
}
|
|
|
|
/* Nothing matched. */
|
|
if (i == 12)
|
|
return (NULL);
|
|
|
|
tm->tm_mon = i;
|
|
bp += len;
|
|
break;
|
|
#endif
|
|
|
|
case 'C': /* The century number. */
|
|
_LEGAL_ALT(_ALT_E);
|
|
if (!(_conv_num(&bp, &i, 0, 99)))
|
|
return (NULL);
|
|
|
|
century = i * 100;
|
|
break;
|
|
|
|
case 'd': /* The day of month. */
|
|
case 'e':
|
|
_LEGAL_ALT(_ALT_O);
|
|
if (!(_conv_num(&bp, &tm->tm_mday, 1, 31)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'k': /* The hour (24-hour clock representation). */
|
|
_LEGAL_ALT(0);
|
|
/* FALLTHROUGH */
|
|
case 'H':
|
|
_LEGAL_ALT(_ALT_O);
|
|
if (!(_conv_num(&bp, &tm->tm_hour, 0, 23)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'l': /* The hour (12-hour clock representation). */
|
|
_LEGAL_ALT(0);
|
|
/* FALLTHROUGH */
|
|
case 'I':
|
|
_LEGAL_ALT(_ALT_O);
|
|
if (!(_conv_num(&bp, &tm->tm_hour, 1, 12)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'j': /* The day of year. */
|
|
_LEGAL_ALT(0);
|
|
if (!(_conv_num(&bp, &tm->tm_yday, 1, 366)))
|
|
return (NULL);
|
|
tm->tm_yday--;
|
|
break;
|
|
|
|
case 'M': /* The minute. */
|
|
_LEGAL_ALT(_ALT_O);
|
|
if (!(_conv_num(&bp, &tm->tm_min, 0, 59)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'm': /* The month. */
|
|
_LEGAL_ALT(_ALT_O);
|
|
if (!(_conv_num(&bp, &tm->tm_mon, 1, 12)))
|
|
return (NULL);
|
|
tm->tm_mon--;
|
|
break;
|
|
|
|
#if 0
|
|
case 'p': /* The locale's equivalent of AM/PM. */
|
|
_LEGAL_ALT(0);
|
|
/* AM? */
|
|
len = strlen(_ctloc(am_pm[0]));
|
|
if (strncasecmp(_ctloc(am_pm[0]), bp, len) == 0) {
|
|
if (tm->tm_hour > 12) /* i.e., 13:00 AM ?! */
|
|
return (NULL);
|
|
else if (tm->tm_hour == 12)
|
|
tm->tm_hour = 0;
|
|
|
|
bp += len;
|
|
break;
|
|
}
|
|
/* PM? */
|
|
len = strlen(_ctloc(am_pm[1]));
|
|
if (strncasecmp(_ctloc(am_pm[1]), bp, len) == 0) {
|
|
if (tm->tm_hour > 12) /* i.e., 13:00 PM ?! */
|
|
return (NULL);
|
|
else if (tm->tm_hour < 12)
|
|
tm->tm_hour += 12;
|
|
|
|
bp += len;
|
|
break;
|
|
}
|
|
|
|
/* Nothing matched. */
|
|
return (NULL);
|
|
#endif
|
|
case 'S': /* The seconds. */
|
|
_LEGAL_ALT(_ALT_O);
|
|
if (!(_conv_num(&bp, &tm->tm_sec, 0, 61)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'U': /* The week of year, beginning on sunday. */
|
|
case 'W': /* The week of year, beginning on monday. */
|
|
_LEGAL_ALT(_ALT_O);
|
|
/*
|
|
* XXX This is bogus, as we can not assume any valid
|
|
* information present in the tm structure at this
|
|
* point to calculate a real value, so just check the
|
|
* range for now.
|
|
*/
|
|
if (!(_conv_num(&bp, &i, 0, 53)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'w': /* The day of week, beginning on sunday. */
|
|
_LEGAL_ALT(_ALT_O);
|
|
if (!(_conv_num(&bp, &tm->tm_wday, 0, 6)))
|
|
return (NULL);
|
|
break;
|
|
|
|
case 'Y': /* The year. */
|
|
_LEGAL_ALT(_ALT_E);
|
|
if (!(_conv_num(&bp, &i, 0, 9999)))
|
|
return (NULL);
|
|
|
|
relyear = -1;
|
|
tm->tm_year = i - TM_YEAR_BASE;
|
|
break;
|
|
|
|
case 'y': /* The year within the century (2 digits). */
|
|
_LEGAL_ALT(_ALT_E | _ALT_O);
|
|
if (!(_conv_num(&bp, &relyear, 0, 99)))
|
|
return (NULL);
|
|
break;
|
|
|
|
/*
|
|
* Miscellaneous conversions.
|
|
*/
|
|
case 'n': /* Any kind of white-space. */
|
|
case 't':
|
|
_LEGAL_ALT(0);
|
|
while (isspace(*bp))
|
|
bp++;
|
|
break;
|
|
|
|
|
|
default: /* Unknown/unsupported conversion. */
|
|
return (NULL);
|
|
}
|
|
|
|
|
|
}
|
|
|
|
/*
|
|
* We need to evaluate the two digit year spec (%y)
|
|
* last as we can get a century spec (%C) at any time.
|
|
*/
|
|
if (relyear != -1) {
|
|
if (century == TM_YEAR_BASE) {
|
|
if (relyear <= 68)
|
|
tm->tm_year = relyear + 2000 - TM_YEAR_BASE;
|
|
else
|
|
tm->tm_year = relyear + 1900 - TM_YEAR_BASE;
|
|
} else {
|
|
tm->tm_year = relyear + century - TM_YEAR_BASE;
|
|
}
|
|
}
|
|
|
|
return ((char *)bp);
|
|
}
|
|
|
|
|
|
static int
|
|
_conv_num(const unsigned char **buf, int *dest, int llim, int ulim)
|
|
{
|
|
int result = 0;
|
|
int rulim = ulim;
|
|
|
|
if (**buf < '0' || **buf > '9')
|
|
return (0);
|
|
|
|
/* we use rulim to break out of the loop when we run out of digits */
|
|
do {
|
|
result *= 10;
|
|
result += *(*buf)++ - '0';
|
|
rulim /= 10;
|
|
} while ((result * 10 <= ulim) && rulim && **buf >= '0' && **buf <= '9');
|
|
|
|
if (result < llim || result > ulim)
|
|
return (0);
|
|
|
|
*dest = result;
|
|
return (1);
|
|
}
|
|
|
|
#endif /* HAVE_STRPTIME */
|
|
|