2014-04-24 19:56:31 +00:00
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/* time_util.c
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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2018-02-07 11:26:45 +00:00
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* SPDX-License-Identifier: GPL-2.0-or-later
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2014-04-24 19:56:31 +00:00
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*/
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#include "config.h"
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2021-06-14 23:06:02 +00:00
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#define WS_LOG_DOMAIN LOG_DOMAIN_WSUTIL
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2021-12-27 02:03:26 +00:00
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#include "time_util.h"
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2016-07-11 22:40:03 +00:00
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2023-09-06 09:00:11 +00:00
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#include <errno.h>
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2020-01-21 22:26:38 +00:00
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#include <wsutil/epochs.h>
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2014-04-24 19:56:31 +00:00
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2016-07-11 22:40:03 +00:00
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#ifndef _WIN32
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#include <sys/time.h>
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#include <sys/resource.h>
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#else
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#include <windows.h>
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#endif
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2021-01-08 09:18:39 +00:00
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/* Test if the given year is a leap year */
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#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
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2014-04-24 19:56:31 +00:00
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/* converts a broken down date representation, relative to UTC,
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* to a timestamp; it uses timegm() if it's available.
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2023-09-06 09:00:11 +00:00
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*
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* Returns -1 and sets errno to EINVAL on error; returns the timestamp
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* and sets errno to 0 on success.
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2014-04-24 19:56:31 +00:00
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*/
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time_t
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mktime_utc(struct tm *tm)
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{
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time_t retval;
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2023-09-06 07:35:03 +00:00
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#ifndef HAVE_TIMEGM
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2023-09-06 09:00:11 +00:00
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/*
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* We don't have timegm(), so use code copied from Glib source
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* gtimer.c.
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*/
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2014-04-24 19:56:31 +00:00
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static const int days_before[] =
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{
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0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
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};
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int yr;
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2023-09-06 09:00:11 +00:00
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if (tm->tm_mon < 0 || tm->tm_mon > 11) {
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errno = EINVAL;
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2014-04-24 19:56:31 +00:00
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return (time_t) -1;
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2023-09-06 09:00:11 +00:00
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}
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2014-04-24 19:56:31 +00:00
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retval = (tm->tm_year - 70) * 365;
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/* count number of leap years */
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yr = tm->tm_year + 1900;
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2021-01-08 09:18:39 +00:00
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if (tm->tm_mon + 1 < 3 && isleap(yr))
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2014-04-24 19:56:31 +00:00
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yr--;
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retval += (((yr / 4) - (yr / 100) + (yr / 400)) - 477); /* 477 = ((1970 / 4) - (1970 / 100) + (1970 / 400)) */
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retval += days_before[tm->tm_mon] + tm->tm_mday - 1;
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retval = ((((retval * 24) + tm->tm_hour) * 60) + tm->tm_min) * 60 + tm->tm_sec;
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2023-09-06 09:00:11 +00:00
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/*
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* Just in case somebody asked for 1969-12-31 23:59:59 UTC,
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* which is one second before the Unix epoch.
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*/
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errno = 0;
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2014-04-24 19:56:31 +00:00
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return retval;
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#else
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2023-09-06 09:00:11 +00:00
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retval = timegm(tm);
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2023-09-06 07:35:03 +00:00
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/*
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* If passed a struct tm for 2013-03-01 00:00:00, both
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* macOS and FreeBSD timegm() return the epoch time
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* value for 2013-03-01 00:00:00 UTC, but also set
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* errno to EOVERFLOW. This may be true of other
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* implementations based on the tzcode reference
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* impelementation of timegm().
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*
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* The macOS and FreeBSD documentation for timegm() neither
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* commit to leaving errno alone nor commit to setting it
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* to a particular value.
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*
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2023-09-06 09:00:11 +00:00
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* Force errno to 0, and check for an error and set it to
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* EINVAL iff we got an error.
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2023-09-06 07:35:03 +00:00
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*/
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2023-09-06 09:00:11 +00:00
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errno = 0;
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if (retval == (time_t)-1) {
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/*
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* Did somebody ask for 1969-12-31 23:59:59 UTC,
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* which is one second before the Unix epoch?
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*
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* If so, timegm() happened to return the correct
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* timestamp (whether because it calculated it or
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* because it failed in some fashion).
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*
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* If not, set errno to EINVAL.
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*/
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if (tm->tm_year != (1969 - 1900) ||
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tm->tm_mon != (12 - 1) ||
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tm->tm_mday != 31 ||
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tm->tm_hour != 23 ||
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tm->tm_min != 59 ||
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tm->tm_sec != 59)
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errno = EINVAL;
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}
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2023-09-06 07:35:03 +00:00
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return retval;
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2014-04-24 19:56:31 +00:00
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#endif /* !HAVE_TIMEGM */
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}
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2014-10-14 15:12:16 +00:00
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2021-01-08 09:18:39 +00:00
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/* Validate the values in a time_t
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* Currently checks tm_year, tm_mon, tm_mday, tm_hour, tm_min, and tm_sec;
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* disregards tm_wday, tm_yday, and tm_isdst.
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* Use this in situations where you wish to return an error rather than
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* normalizing invalid dates; otherwise you could specify, for example,
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* 2020-10-40 (to quote the macOS and probably *BSD manual
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* page for ctime()/localtime()/mktime()/etc., "October 40
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* is changed into November 9").
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*/
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2023-09-22 20:42:49 +00:00
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bool
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2021-01-08 09:18:39 +00:00
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tm_is_valid(struct tm *tm)
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{
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2023-09-22 20:42:49 +00:00
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static const int8_t days_in_month[12] = {
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2021-01-08 09:18:39 +00:00
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31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
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};
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if (tm->tm_mon < 0 || tm->tm_mon > 11) {
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2023-09-22 20:42:49 +00:00
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return false;
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2021-01-08 09:18:39 +00:00
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}
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if (tm->tm_mday < 0 || tm->tm_mday >
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((tm->tm_mon == 1 && isleap(tm->tm_year)) ? 29 : days_in_month[tm->tm_mon])) {
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2023-09-22 20:42:49 +00:00
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return false;
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2021-01-08 09:18:39 +00:00
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}
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if (tm->tm_hour < 0 || tm->tm_hour > 23) {
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2023-09-22 20:42:49 +00:00
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return false;
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2021-01-08 09:18:39 +00:00
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}
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2021-12-02 04:13:21 +00:00
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/* XXX: ISO 8601 and others allow 24:00:00 for end of day, perhaps that
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* one case should be allowed?
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*/
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2021-01-08 09:18:39 +00:00
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if (tm->tm_min < 0 || tm->tm_min > 59) {
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2023-09-22 20:42:49 +00:00
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return false;
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2021-01-08 09:18:39 +00:00
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}
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if (tm->tm_sec < 0 || tm->tm_sec > 60) {
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/* 60, not 59, to account for leap seconds */
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2023-09-22 20:42:49 +00:00
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return false;
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2021-01-08 09:18:39 +00:00
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}
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2023-09-22 20:42:49 +00:00
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return true;
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2021-01-08 09:18:39 +00:00
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}
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2016-08-07 03:07:04 +00:00
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void get_resource_usage(double *user_time, double *sys_time) {
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2016-07-11 22:40:03 +00:00
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#ifndef _WIN32
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struct rusage ru;
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getrusage(RUSAGE_SELF, &ru);
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2016-08-07 03:07:04 +00:00
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*user_time = ru.ru_utime.tv_sec + (ru.ru_utime.tv_usec / 1000000.0);
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*sys_time = ru.ru_stime.tv_sec + (ru.ru_stime.tv_usec / 1000000.0);
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2016-07-11 22:40:03 +00:00
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#else /* _WIN32 */
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HANDLE h_proc = GetCurrentProcess();
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FILETIME cft, eft, kft, uft;
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ULARGE_INTEGER uli_time;
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GetProcessTimes(h_proc, &cft, &eft, &kft, &uft);
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uli_time.LowPart = uft.dwLowDateTime;
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uli_time.HighPart = uft.dwHighDateTime;
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2016-08-07 03:07:04 +00:00
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*user_time = uli_time.QuadPart / 10000000.0;
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2016-07-11 22:40:03 +00:00
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uli_time.LowPart = kft.dwLowDateTime;
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uli_time.HighPart = kft.dwHighDateTime;
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2016-08-07 03:07:04 +00:00
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*sys_time = uli_time.QuadPart / 1000000000.0;
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2016-07-11 22:40:03 +00:00
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#endif /* _WIN32 */
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2016-04-07 22:31:21 +00:00
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}
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2016-08-07 03:07:04 +00:00
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static double last_user_time = 0.0;
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static double last_sys_time = 0.0;
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2016-04-07 22:31:21 +00:00
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2023-09-22 20:42:49 +00:00
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void log_resource_usage(bool reset_delta, const char *format, ...) {
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2016-04-07 22:31:21 +00:00
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va_list ap;
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GString *log_str = g_string_new("");
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2016-08-07 03:07:04 +00:00
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double user_time;
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double sys_time;
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2016-04-07 22:31:21 +00:00
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2016-08-07 03:07:04 +00:00
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get_resource_usage(&user_time, &sys_time);
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2016-07-11 22:40:03 +00:00
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2016-08-07 03:07:04 +00:00
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if (reset_delta || last_user_time == 0.0) {
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last_user_time = user_time;
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last_sys_time = sys_time;
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2016-07-11 22:40:03 +00:00
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}
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g_string_append_printf(log_str, "user %.3f +%.3f sys %.3f +%.3f ",
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2016-08-07 03:07:04 +00:00
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user_time, user_time - last_user_time,
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sys_time, sys_time - last_sys_time);
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2016-07-11 22:40:03 +00:00
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va_start(ap, format);
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g_string_append_vprintf(log_str, format, ap);
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va_end(ap);
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2021-06-14 23:06:02 +00:00
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ws_warning("%s", log_str->str);
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2023-09-22 20:42:49 +00:00
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g_string_free(log_str, true);
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2016-07-11 22:40:03 +00:00
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}
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2017-12-16 22:15:28 +00:00
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/* Copied from pcapio.c pcapng_write_interface_statistics_block()*/
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2023-09-22 20:42:49 +00:00
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uint64_t
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2017-12-16 22:15:28 +00:00
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create_timestamp(void) {
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2023-09-22 20:42:49 +00:00
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uint64_t timestamp;
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2017-12-16 22:15:28 +00:00
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#ifdef _WIN32
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2021-12-17 18:29:53 +00:00
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FILETIME now;
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2017-12-16 22:15:28 +00:00
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#else
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2021-12-17 18:29:53 +00:00
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struct timeval now;
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2017-12-16 22:15:28 +00:00
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#endif
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#ifdef _WIN32
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2021-12-17 18:29:53 +00:00
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/*
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* Current time, represented as 100-nanosecond intervals since
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* January 1, 1601, 00:00:00 UTC.
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*
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* I think DWORD might be signed, so cast both parts of "now"
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2023-09-22 20:42:49 +00:00
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* to uint32_t so that the sign bit doesn't get treated specially.
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2021-12-17 18:29:53 +00:00
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*
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* Windows 8 provides GetSystemTimePreciseAsFileTime which we
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* might want to use instead.
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*/
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GetSystemTimeAsFileTime(&now);
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2023-09-22 20:42:49 +00:00
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timestamp = (((uint64_t)(uint32_t)now.dwHighDateTime) << 32) +
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(uint32_t)now.dwLowDateTime;
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2021-12-17 18:29:53 +00:00
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/*
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* Convert to same thing but as 1-microsecond, i.e. 1000-nanosecond,
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* intervals.
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*/
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timestamp /= 10;
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/*
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* Subtract difference, in microseconds, between January 1, 1601
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* 00:00:00 UTC and January 1, 1970, 00:00:00 UTC.
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*/
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timestamp -= EPOCH_DELTA_1601_01_01_00_00_00_UTC*1000000;
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2017-12-16 22:15:28 +00:00
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#else
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2021-12-17 18:29:53 +00:00
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/*
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* Current time, represented as seconds and microseconds since
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* January 1, 1970, 00:00:00 UTC.
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*/
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gettimeofday(&now, NULL);
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/*
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* Convert to delta in microseconds.
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*/
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2023-09-22 20:42:49 +00:00
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timestamp = (uint64_t)(now.tv_sec) * 1000000 + (uint64_t)(now.tv_usec);
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2017-12-16 22:15:28 +00:00
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#endif
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2021-12-17 18:29:53 +00:00
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return timestamp;
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2017-12-16 22:15:28 +00:00
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}
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2021-12-15 13:06:57 +00:00
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struct timespec *
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ws_clock_get_realtime(struct timespec *ts)
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{
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#if defined(HAVE_CLOCK_GETTIME)
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if (clock_gettime(CLOCK_REALTIME, ts) == 0)
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return ts;
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#elif defined(HAVE_TIMESPEC_GET)
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if (timespec_get(ts, TIME_UTC) == TIME_UTC)
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return ts;
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#endif
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2021-12-15 13:25:11 +00:00
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#ifndef _WIN32
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2021-12-15 13:06:57 +00:00
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/* Fall back on gettimeofday(). */
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struct timeval usectimenow;
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gettimeofday(&usectimenow, NULL);
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ts->tv_sec = usectimenow.tv_sec;
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ts->tv_nsec = usectimenow.tv_usec*1000;
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return ts;
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2021-12-15 13:25:11 +00:00
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#else
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/* Fall back on time(). */
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ts->tv_sec = time(NULL);
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ts->tv_nsec = 0;
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return ts;
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#endif
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2021-12-15 13:06:57 +00:00
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}
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2023-09-03 00:35:31 +00:00
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struct tm *
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ws_localtime_r(const time_t *timep, struct tm *result)
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{
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#if defined(HAVE_LOCALTIME_R)
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return localtime_r(timep, result);
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#elif defined(_MSC_VER)
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errno_t err = localtime_s(result, timep);
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if (err == 0)
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return result;
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return NULL;
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#else
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struct tm *aux = localtime(timep);
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if (aux == NULL)
|
|
|
|
return NULL;
|
|
|
|
*result = *aux;
|
|
|
|
return result;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2023-09-21 08:31:00 +00:00
|
|
|
void ws_tzset(void)
|
Add a routine to format an nstime as an ISO 8601-style date/time.
This replaces code in both absolute_time_string(), in capinfos, and
set_abs_ymd_time(), in libwireshark. Like absolute_time_string(), it
reports, in the formatted string, an error if the seconds value in the
nstime can't be converted to a struct tm (looking at *you*, Visual
Studio C library),
Have that routine handle all time precision values from 0 (seconds) to 9
(nanoseconds).
Add a ws_gmtime_r(), matching ws_localtime_r(), for use by that routine.
2023-09-11 09:21:59 +00:00
|
|
|
{
|
|
|
|
#ifdef HAVE_TZSET
|
|
|
|
tzset();
|
|
|
|
#endif
|
2023-09-21 08:31:00 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
struct tm *
|
|
|
|
ws_gmtime_r(const time_t *timep, struct tm *result)
|
|
|
|
{
|
|
|
|
#if defined(HAVE_GMTIME_R)
|
Add a routine to format an nstime as an ISO 8601-style date/time.
This replaces code in both absolute_time_string(), in capinfos, and
set_abs_ymd_time(), in libwireshark. Like absolute_time_string(), it
reports, in the formatted string, an error if the seconds value in the
nstime can't be converted to a struct tm (looking at *you*, Visual
Studio C library),
Have that routine handle all time precision values from 0 (seconds) to 9
(nanoseconds).
Add a ws_gmtime_r(), matching ws_localtime_r(), for use by that routine.
2023-09-11 09:21:59 +00:00
|
|
|
return gmtime_r(timep, result);
|
|
|
|
#elif defined(_MSC_VER)
|
|
|
|
errno_t err = gmtime_s(result, timep);
|
|
|
|
if (err == 0)
|
|
|
|
return result;
|
|
|
|
return NULL;
|
|
|
|
#else
|
|
|
|
struct tm *aux = gmtime(timep);
|
|
|
|
if (aux == NULL)
|
|
|
|
return NULL;
|
|
|
|
*result = *aux;
|
|
|
|
return result;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2014-10-14 15:12:16 +00:00
|
|
|
/*
|
2019-07-26 18:43:17 +00:00
|
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
2014-10-14 15:12:16 +00:00
|
|
|
*
|
|
|
|
* Local variables:
|
|
|
|
* c-basic-offset: 8
|
|
|
|
* tab-width: 8
|
|
|
|
* indent-tabs-mode: t
|
|
|
|
* End:
|
|
|
|
*
|
|
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
|
|
*/
|