528 lines
18 KiB
C
528 lines
18 KiB
C
/* Test of parse_datetime() function.
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Copyright (C) 2008-2025 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>. */
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/* Written by Simon Josefsson <simon@josefsson.org>, 2008. */
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#include <config.h>
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#include "parse-datetime.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "macros.h"
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#ifdef DEBUG
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#define LOG(str, now, res) \
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printf ("string '%s' diff %d %d\n", \
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str, res.tv_sec - now.tv_sec, res.tv_nsec - now.tv_nsec);
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#else
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#define LOG(str, now, res) (void) 0
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#endif
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static const char *const day_table[] =
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{
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"SUNDAY",
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"MONDAY",
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"TUESDAY",
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"WEDNESDAY",
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"THURSDAY",
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"FRIDAY",
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"SATURDAY",
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NULL
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};
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#if ! HAVE_STRUCT_TM_TM_GMTOFF
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/* Shift A right by B bits portably, by dividing A by 2**B and
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truncating towards minus infinity. A and B should be free of side
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effects, and B should be in the range 0 <= B <= INT_BITS - 2, where
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INT_BITS is the number of useful bits in an int. GNU code can
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assume that INT_BITS is at least 32.
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ISO C99 says that A >> B is implementation-defined if A < 0. Some
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implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift
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right in the usual way when A < 0, so SHR falls back on division if
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ordinary A >> B doesn't seem to be the usual signed shift. */
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#define SHR(a, b) \
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(-1 >> 1 == -1 \
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? (a) >> (b) \
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: (a) / (1 << (b)) - ((a) % (1 << (b)) < 0))
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#define TM_YEAR_BASE 1900
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/* Yield the difference between *A and *B,
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measured in seconds, ignoring leap seconds.
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The body of this function is taken directly from the GNU C Library;
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see src/strftime.c. */
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static long int
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tm_diff (struct tm const *a, struct tm const *b)
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{
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/* Compute intervening leap days correctly even if year is negative.
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Take care to avoid int overflow in leap day calculations. */
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int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3);
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int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3);
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int a100 = a4 / 25 - (a4 % 25 < 0);
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int b100 = b4 / 25 - (b4 % 25 < 0);
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int a400 = SHR (a100, 2);
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int b400 = SHR (b100, 2);
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int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
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long int ayear = a->tm_year;
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long int years = ayear - b->tm_year;
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long int days = (365 * years + intervening_leap_days
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+ (a->tm_yday - b->tm_yday));
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return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
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+ (a->tm_min - b->tm_min))
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+ (a->tm_sec - b->tm_sec));
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}
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#endif
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static long
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gmt_offset (time_t s)
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{
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long gmtoff;
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#if !HAVE_STRUCT_TM_TM_GMTOFF
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struct tm tm_local = *localtime (&s);
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struct tm tm_gmt = *gmtime (&s);
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gmtoff = tm_diff (&tm_local, &tm_gmt);
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#else
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gmtoff = localtime (&s)->tm_gmtoff;
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#endif
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return gmtoff;
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}
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/* Define SOME_TIMEPOINT to some tv_sec value that is supported by the
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platform's localtime() function and that is on the same weekday as
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the Unix epoch. */
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#if defined _WIN32 && !defined __CYGWIN__
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/* On native Windows, localtime() fails for all time_t values < 0. */
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# define SOME_TIMEPOINT (700 * 86400)
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#else
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/* The Unix epoch. */
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# define SOME_TIMEPOINT 0
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#endif
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int
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main (_GL_UNUSED int argc, char **argv)
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{
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struct timespec result;
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struct timespec result2;
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struct timespec expected;
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struct timespec now;
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const char *p;
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int i;
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long gmtoff;
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time_t ref_time = 1304250918;
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/* Set the time zone to US Eastern time with the 2012 rules. This
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should disable any leap second support. Otherwise, there will be
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a problem with glibc on sites that default to leap seconds; see
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<https://bugs.gnu.org/12206>. */
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ASSERT (setenv ("TZ", "EST5EDT,M3.2.0,M11.1.0", 1) == 0);
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tzset ();
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gmtoff = gmt_offset (ref_time);
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/* ISO 8601 extended date and time of day representation,
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'T' separator, local time zone */
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p = "2011-05-01T11:55:18";
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expected.tv_sec = ref_time - gmtoff;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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/* ISO 8601 extended date and time of day representation,
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' ' separator, local time zone */
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p = "2011-05-01 11:55:18";
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expected.tv_sec = ref_time - gmtoff;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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/* ISO 8601 extended date and time of day representation,
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' ' separator, 'J' (local) time zone */
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p = "2011-05-01 11:55:18J";
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expected.tv_sec = ref_time - gmtoff;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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/* ISO 8601, extended date and time of day representation,
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'T' separator, UTC */
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p = "2011-05-01T11:55:18Z";
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expected.tv_sec = ref_time;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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/* ISO 8601, extended date and time of day representation,
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' ' separator, UTC */
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p = "2011-05-01 11:55:18Z";
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expected.tv_sec = ref_time;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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/* ISO 8601 extended date and time of day representation,
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'T' separator, w/UTC offset */
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p = "2011-05-01T11:55:18-07:00";
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expected.tv_sec = 1304276118;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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/* ISO 8601 extended date and time of day representation,
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' ' separator, w/UTC offset */
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p = "2011-05-01 11:55:18-07:00";
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expected.tv_sec = 1304276118;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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/* ISO 8601 extended date and time of day representation,
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'T' separator, w/hour only UTC offset */
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p = "2011-05-01T11:55:18-07";
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expected.tv_sec = 1304276118;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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/* ISO 8601 extended date and time of day representation,
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' ' separator, w/hour only UTC offset */
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p = "2011-05-01 11:55:18-07";
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expected.tv_sec = 1304276118;
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expected.tv_nsec = 0;
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ASSERT (parse_datetime (&result, p, NULL));
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LOG (p, expected, result);
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ASSERT (expected.tv_sec == result.tv_sec
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&& expected.tv_nsec == result.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "now";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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ASSERT (now.tv_sec == result.tv_sec && now.tv_nsec == result.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "tomorrow";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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ASSERT (now.tv_sec + 24 * 60 * 60 == result.tv_sec
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&& now.tv_nsec == result.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "yesterday";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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ASSERT (now.tv_sec - 24 * 60 * 60 == result.tv_sec
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&& now.tv_nsec == result.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "4 hours";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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ASSERT (now.tv_sec + 4 * 60 * 60 == result.tv_sec
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&& now.tv_nsec == result.tv_nsec);
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/* test if timezone is not being ignored for day offset */
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC+400 +24 hours";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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p = "UTC+400 +1 day";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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/* test if several time zones formats are handled same way */
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC+14:00";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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p = "UTC+14";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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p = "UTC+1400";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC-14:00";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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p = "UTC-14";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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p = "UTC-1400";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC+0:15";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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p = "UTC+0015";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC-1:30";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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p = "UTC-130";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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/* TZ out of range should cause parse_datetime failure */
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC+25:00";
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ASSERT (!parse_datetime (&result, p, &now));
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/* Check for several invalid countable dayshifts */
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC+4:00 +40 yesterday";
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ASSERT (!parse_datetime (&result, p, &now));
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p = "UTC+4:00 next yesterday";
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ASSERT (!parse_datetime (&result, p, &now));
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p = "UTC+4:00 tomorrow ago";
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ASSERT (!parse_datetime (&result, p, &now));
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p = "UTC+4:00 tomorrow hence";
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ASSERT (!parse_datetime (&result, p, &now));
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p = "UTC+4:00 40 now ago";
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ASSERT (!parse_datetime (&result, p, &now));
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p = "UTC+4:00 last tomorrow";
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ASSERT (!parse_datetime (&result, p, &now));
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p = "UTC+4:00 -4 today";
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ASSERT (!parse_datetime (&result, p, &now));
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/* And check correct usage of dayshifts */
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC+400 tomorrow";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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p = "UTC+400 +1 day";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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p = "UTC+400 1 day hence";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC+400 yesterday";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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p = "UTC+400 1 day ago";
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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now.tv_sec = SOME_TIMEPOINT + 4711;
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now.tv_nsec = 1267;
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p = "UTC+400 now";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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p = "UTC+400 +0 minutes"; /* silly, but simple "UTC+400" is different*/
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ASSERT (parse_datetime (&result2, p, &now));
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LOG (p, now, result2);
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ASSERT (result.tv_sec == result2.tv_sec
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&& result.tv_nsec == result2.tv_nsec);
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/* If this platform has TZDB, check for GNU Bug#48085. */
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#if defined _WIN32 && !defined __CYGWIN__
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ASSERT (setenv ("TZ", "US Eastern Standard Time", 1) == 0);
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#else
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ASSERT (setenv ("TZ", "America/Indiana/Indianapolis", 1) == 0);
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#endif
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tzset ();
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now.tv_sec = 1619641490;
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now.tv_nsec = 0;
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struct tm *tm = localtime (&now.tv_sec);
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if (tm && tm->tm_year == 2021 - 1900 && tm->tm_mon == 4 - 1
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&& tm->tm_mday == 28 && tm->tm_hour == 16 && tm->tm_min == 24
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&& 0 < tm->tm_isdst)
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{
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int has_leap_seconds = tm->tm_sec != now.tv_sec % 60;
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p = "now - 35 years";
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ASSERT (parse_datetime (&result, p, &now));
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LOG (p, now, result);
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/* Allow "now - 35 years" to mean either (a) the naive sense
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where subtracting 35 years from 2021-04-28 16:24:50 yields
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1986-04-28 16:24:50, or (b) the pedantic sense where it
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yields 1986-04-28 15:24:50 (an hour earlier) due to adjusting
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for the switch from DST in 2021 to standard time in 1986. */
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time_t naive = 515107490 + (has_leap_seconds ? 13 : 0);
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time_t pedantic = naive - 60 * 60;
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ASSERT (result.tv_sec == naive || result.tv_sec == pedantic);
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}
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/* Check that some "next Monday", "last Wednesday", etc. are correct. */
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ASSERT (setenv ("TZ", "UTC0", 1) == 0);
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tzset ();
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for (i = 0; day_table[i]; i++)
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{
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unsigned int thur2 = SOME_TIMEPOINT + 7 * 24 * 3600; /* 2nd thursday */
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char tmp[32];
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sprintf (tmp, "NEXT %s", day_table[i]);
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now.tv_sec = thur2 + 4711;
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now.tv_nsec = 1267;
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ASSERT (parse_datetime (&result, tmp, &now));
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LOG (tmp, now, result);
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ASSERT (result.tv_nsec == 0);
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ASSERT (result.tv_sec == thur2 + (i == 4 ? 7 : (i + 3) % 7) * 24 * 3600);
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sprintf (tmp, "LAST %s", day_table[i]);
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now.tv_sec = thur2 + 4711;
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now.tv_nsec = 1267;
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ASSERT (parse_datetime (&result, tmp, &now));
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LOG (tmp, now, result);
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ASSERT (result.tv_nsec == 0);
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ASSERT (result.tv_sec == thur2 + ((i + 3) % 7 - 7) * 24 * 3600);
|
|
}
|
|
|
|
/* On native Windows, localtime() fails for all time_t values < 0. */
|
|
#if !(defined _WIN32 && !defined __CYGWIN__)
|
|
p = "1970-12-31T23:59:59+00:00 - 1 year"; /* Bug#50115 */
|
|
now.tv_sec = -1;
|
|
now.tv_nsec = 0;
|
|
ASSERT (parse_datetime (&result, p, &now));
|
|
LOG (p, now, result);
|
|
ASSERT (result.tv_sec == now.tv_sec
|
|
&& result.tv_nsec == now.tv_nsec);
|
|
|
|
p = "THURSDAY UTC+00"; /* The epoch was on Thursday. */
|
|
now.tv_sec = 0;
|
|
now.tv_nsec = 0;
|
|
ASSERT (parse_datetime (&result, p, &now));
|
|
LOG (p, now, result);
|
|
ASSERT (result.tv_sec == now.tv_sec
|
|
&& result.tv_nsec == now.tv_nsec);
|
|
|
|
p = "FRIDAY UTC+00";
|
|
now.tv_sec = 0;
|
|
now.tv_nsec = 0;
|
|
ASSERT (parse_datetime (&result, p, &now));
|
|
LOG (p, now, result);
|
|
ASSERT (result.tv_sec == 24 * 3600
|
|
&& result.tv_nsec == now.tv_nsec);
|
|
#endif
|
|
|
|
/* Exercise a sign-extension bug. Before July 2012, an input
|
|
starting with a high-bit-set byte would be treated like "0". */
|
|
ASSERT ( ! parse_datetime (&result, "\xb0", &now));
|
|
|
|
/* Exercise TZ="" parsing code. */
|
|
/* These two would infloop or segfault before Feb 2014. */
|
|
ASSERT ( ! parse_datetime (&result, "TZ=\"\"\"", &now));
|
|
ASSERT ( ! parse_datetime (&result, "TZ=\"\" \"", &now));
|
|
/* Exercise invalid patterns. */
|
|
ASSERT ( ! parse_datetime (&result, "TZ=\"", &now));
|
|
ASSERT ( ! parse_datetime (&result, "TZ=\"\\\"", &now));
|
|
ASSERT ( ! parse_datetime (&result, "TZ=\"\\n", &now));
|
|
ASSERT ( ! parse_datetime (&result, "TZ=\"\\n\"", &now));
|
|
/* Exercise valid patterns. */
|
|
ASSERT ( parse_datetime (&result, "TZ=\"\"", &now));
|
|
ASSERT ( parse_datetime (&result, "TZ=\"\" ", &now));
|
|
ASSERT ( parse_datetime (&result, " TZ=\"\"", &now));
|
|
/* Exercise patterns which may be valid or invalid, depending on the
|
|
platform. */
|
|
#if !defined __NetBSD__
|
|
ASSERT ( parse_datetime (&result, "TZ=\"\\\\\"", &now));
|
|
ASSERT ( parse_datetime (&result, "TZ=\"\\\"\"", &now));
|
|
#endif
|
|
|
|
/* Outlandishly-long time zone abbreviations should not cause problems. */
|
|
{
|
|
static char const bufprefix[] = "TZ=\"";
|
|
long int tzname_max = -1;
|
|
errno = 0;
|
|
#ifdef _SC_TZNAME_MAX
|
|
tzname_max = sysconf (_SC_TZNAME_MAX);
|
|
#endif
|
|
enum { tzname_alloc = 2000 };
|
|
if (tzname_max < 0)
|
|
tzname_max = errno ? 6 : tzname_alloc;
|
|
int tzname_len = tzname_alloc < tzname_max ? tzname_alloc : tzname_max;
|
|
static char const bufsuffix[] = "0\" 1970-01-01 01:02:03.123456789";
|
|
enum { bufsize = sizeof bufprefix - 1 + tzname_alloc + sizeof bufsuffix };
|
|
char buf[bufsize];
|
|
memcpy (buf, bufprefix, sizeof bufprefix - 1);
|
|
memset (buf + sizeof bufprefix - 1, 'X', tzname_len);
|
|
strcpy (buf + sizeof bufprefix - 1 + tzname_len, bufsuffix);
|
|
ASSERT (parse_datetime (&result, buf, &now));
|
|
LOG (buf, now, result);
|
|
ASSERT (result.tv_sec == 1 * 60 * 60 + 2 * 60 + 3
|
|
&& result.tv_nsec == 123456789);
|
|
}
|
|
|
|
return test_exit_status;
|
|
}
|