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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <config.h>
#include <errno.h>
#include <limits.h>
#include <stdbool.h>
#include <stddef.h>
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <windows.h>
#include <isc/assertions.h>
#include <isc/string.h>
#include <isc/time.h>
#include <isc/tm.h>
#include <isc/util.h>
/*
* struct FILETIME uses "100-nanoseconds intervals".
* NS / S = 1000000000 (10^9).
* While it is reasonably obvious that this makes the needed
* conversion factor 10^7, it is coded this way for additional clarity.
*/
#define NS_PER_S 1000000000
#define NS_INTERVAL 100
#define INTERVALS_PER_S (NS_PER_S / NS_INTERVAL)
/***
*** Absolute Times
***/
static const isc_time_t epoch = { { 0, 0 } };
LIBISC_EXTERNAL_DATA const isc_time_t * const isc_time_epoch = &epoch;
/***
*** Intervals
***/
static const isc_interval_t zero_interval = { 0 };
LIBISC_EXTERNAL_DATA const isc_interval_t * const isc_interval_zero = &zero_interval;
void
isc_interval_set(isc_interval_t *i, unsigned int seconds,
unsigned int nanoseconds)
{
REQUIRE(i != NULL);
REQUIRE(nanoseconds < NS_PER_S);
/*
* This rounds nanoseconds up not down.
*/
i->interval = (LONGLONG)seconds * INTERVALS_PER_S
+ (nanoseconds + NS_INTERVAL - 1) / NS_INTERVAL;
}
bool
isc_interval_iszero(const isc_interval_t *i) {
REQUIRE(i != NULL);
if (i->interval == 0)
return (true);
return (false);
}
void
isc_time_set(isc_time_t *t, unsigned int seconds, unsigned int nanoseconds) {
SYSTEMTIME epoch1970 = { 1970, 1, 4, 1, 0, 0, 0, 0 };
FILETIME temp;
ULARGE_INTEGER i1;
REQUIRE(t != NULL);
REQUIRE(nanoseconds < NS_PER_S);
SystemTimeToFileTime(&epoch1970, &temp);
i1.LowPart = temp.dwLowDateTime;
i1.HighPart = temp.dwHighDateTime;
i1.QuadPart += (unsigned __int64)nanoseconds/100;
i1.QuadPart += (unsigned __int64)seconds*10000000;
t->absolute.dwLowDateTime = i1.LowPart;
t->absolute.dwHighDateTime = i1.HighPart;
}
void
isc_time_settoepoch(isc_time_t *t) {
REQUIRE(t != NULL);
t->absolute.dwLowDateTime = 0;
t->absolute.dwHighDateTime = 0;
}
bool
isc_time_isepoch(const isc_time_t *t) {
REQUIRE(t != NULL);
if (t->absolute.dwLowDateTime == 0 &&
t->absolute.dwHighDateTime == 0)
return (true);
return (false);
}
isc_result_t
isc_time_now(isc_time_t *t) {
REQUIRE(t != NULL);
GetSystemTimeAsFileTime(&t->absolute);
return (ISC_R_SUCCESS);
}
isc_result_t
isc_time_nowplusinterval(isc_time_t *t, const isc_interval_t *i) {
ULARGE_INTEGER i1;
REQUIRE(t != NULL);
REQUIRE(i != NULL);
GetSystemTimeAsFileTime(&t->absolute);
i1.LowPart = t->absolute.dwLowDateTime;
i1.HighPart = t->absolute.dwHighDateTime;
if (UINT64_MAX - i1.QuadPart < (unsigned __int64)i->interval)
return (ISC_R_RANGE);
i1.QuadPart += i->interval;
t->absolute.dwLowDateTime = i1.LowPart;
t->absolute.dwHighDateTime = i1.HighPart;
return (ISC_R_SUCCESS);
}
int
isc_time_compare(const isc_time_t *t1, const isc_time_t *t2) {
REQUIRE(t1 != NULL && t2 != NULL);
return ((int)CompareFileTime(&t1->absolute, &t2->absolute));
}
isc_result_t
isc_time_add(const isc_time_t *t, const isc_interval_t *i, isc_time_t *result)
{
ULARGE_INTEGER i1;
REQUIRE(t != NULL && i != NULL && result != NULL);
i1.LowPart = t->absolute.dwLowDateTime;
i1.HighPart = t->absolute.dwHighDateTime;
if (UINT64_MAX - i1.QuadPart < (unsigned __int64)i->interval)
return (ISC_R_RANGE);
i1.QuadPart += i->interval;
result->absolute.dwLowDateTime = i1.LowPart;
result->absolute.dwHighDateTime = i1.HighPart;
return (ISC_R_SUCCESS);
}
isc_result_t
isc_time_subtract(const isc_time_t *t, const isc_interval_t *i,
isc_time_t *result) {
ULARGE_INTEGER i1;
REQUIRE(t != NULL && i != NULL && result != NULL);
i1.LowPart = t->absolute.dwLowDateTime;
i1.HighPart = t->absolute.dwHighDateTime;
if (i1.QuadPart < (unsigned __int64) i->interval)
return (ISC_R_RANGE);
i1.QuadPart -= i->interval;
result->absolute.dwLowDateTime = i1.LowPart;
result->absolute.dwHighDateTime = i1.HighPart;
return (ISC_R_SUCCESS);
}
uint64_t
isc_time_microdiff(const isc_time_t *t1, const isc_time_t *t2) {
ULARGE_INTEGER i1, i2;
LONGLONG i3;
REQUIRE(t1 != NULL && t2 != NULL);
i1.LowPart = t1->absolute.dwLowDateTime;
i1.HighPart = t1->absolute.dwHighDateTime;
i2.LowPart = t2->absolute.dwLowDateTime;
i2.HighPart = t2->absolute.dwHighDateTime;
if (i1.QuadPart <= i2.QuadPart)
return (0);
/*
* Convert to microseconds.
*/
i3 = (i1.QuadPart - i2.QuadPart) / 10;
return (i3);
}
uint32_t
isc_time_seconds(const isc_time_t *t) {
SYSTEMTIME epoch1970 = { 1970, 1, 4, 1, 0, 0, 0, 0 };
FILETIME temp;
ULARGE_INTEGER i1, i2;
LONGLONG i3;
SystemTimeToFileTime(&epoch1970, &temp);
i1.LowPart = t->absolute.dwLowDateTime;
i1.HighPart = t->absolute.dwHighDateTime;
i2.LowPart = temp.dwLowDateTime;
i2.HighPart = temp.dwHighDateTime;
i3 = (i1.QuadPart - i2.QuadPart) / 10000000;
return ((uint32_t)i3);
}
isc_result_t
isc_time_secondsastimet(const isc_time_t *t, time_t *secondsp) {
time_t seconds;
REQUIRE(t != NULL);
seconds = (time_t)isc_time_seconds(t);
INSIST(sizeof(unsigned int) == sizeof(uint32_t));
INSIST(sizeof(time_t) >= sizeof(uint32_t));
if (isc_time_seconds(t) > (~0U>>1) && seconds <= (time_t)(~0U>>1))
return (ISC_R_RANGE);
*secondsp = seconds;
return (ISC_R_SUCCESS);
}
uint32_t
isc_time_nanoseconds(const isc_time_t *t) {
ULARGE_INTEGER i;
i.LowPart = t->absolute.dwLowDateTime;
i.HighPart = t->absolute.dwHighDateTime;
return ((uint32_t)(i.QuadPart % 10000000) * 100);
}
void
isc_time_formattimestamp(const isc_time_t *t, char *buf, unsigned int len) {
FILETIME localft;
SYSTEMTIME st;
char DateBuf[50];
char TimeBuf[50];
REQUIRE(t != NULL);
REQUIRE(buf != NULL);
REQUIRE(len > 0);
if (FileTimeToLocalFileTime(&t->absolute, &localft) &&
FileTimeToSystemTime(&localft, &st)) {
GetDateFormat(LOCALE_USER_DEFAULT, 0, &st, "dd-MMM-yyyy",
DateBuf, 50);
GetTimeFormat(LOCALE_USER_DEFAULT, TIME_NOTIMEMARKER|
TIME_FORCE24HOURFORMAT, &st, NULL, TimeBuf, 50);
snprintf(buf, len, "%s %s.%03u", DateBuf, TimeBuf,
st.wMilliseconds);
} else {
strlcpy(buf, "99-Bad-9999 99:99:99.999", len);
}
}
void
isc_time_formathttptimestamp(const isc_time_t *t, char *buf, unsigned int len) {
SYSTEMTIME st;
char DateBuf[50];
char TimeBuf[50];
/* strftime() format: "%a, %d %b %Y %H:%M:%S GMT" */
REQUIRE(t != NULL);
REQUIRE(buf != NULL);
REQUIRE(len > 0);
if (FileTimeToSystemTime(&t->absolute, &st)) {
GetDateFormat(LOCALE_USER_DEFAULT, 0, &st,
"ddd',' dd MMM yyyy", DateBuf, 50);
GetTimeFormat(LOCALE_USER_DEFAULT,
TIME_NOTIMEMARKER | TIME_FORCE24HOURFORMAT,
&st, "hh':'mm':'ss", TimeBuf, 50);
snprintf(buf, len, "%s %s GMT", DateBuf, TimeBuf);
} else {
buf[0] = 0;
}
}
isc_result_t
isc_time_parsehttptimestamp(char *buf, isc_time_t *t) {
struct tm t_tm;
time_t when;
char *p;
REQUIRE(buf != NULL);
REQUIRE(t != NULL);
p = isc_tm_strptime(buf, "%a, %d %b %Y %H:%M:%S", &t_tm);
if (p == NULL)
return (ISC_R_UNEXPECTED);
when = isc_tm_timegm(&t_tm);
if (when == -1)
return (ISC_R_UNEXPECTED);
isc_time_set(t, (unsigned int)when, 0);
return (ISC_R_SUCCESS);
}
void
isc_time_formatISO8601(const isc_time_t *t, char *buf, unsigned int len) {
SYSTEMTIME st;
char DateBuf[50];
char TimeBuf[50];
/* strtime() format: "%Y-%m-%dT%H:%M:%SZ" */
REQUIRE(t != NULL);
REQUIRE(buf != NULL);
REQUIRE(len > 0);
if (FileTimeToSystemTime(&t->absolute, &st)) {
GetDateFormat(LOCALE_NEUTRAL, 0, &st, "yyyy-MM-dd",
DateBuf, 50);
GetTimeFormat(LOCALE_NEUTRAL,
TIME_NOTIMEMARKER | TIME_FORCE24HOURFORMAT,
&st, "hh':'mm':'ss", TimeBuf, 50);
snprintf(buf, len, "%sT%sZ", DateBuf, TimeBuf);
} else {
buf[0] = 0;
}
}
void
isc_time_formatISO8601ms(const isc_time_t *t, char *buf, unsigned int len) {
SYSTEMTIME st;
char DateBuf[50];
char TimeBuf[50];
/* strtime() format: "%Y-%m-%dT%H:%M:%S.SSSZ" */
REQUIRE(t != NULL);
REQUIRE(buf != NULL);
REQUIRE(len > 0);
if (FileTimeToSystemTime(&t->absolute, &st)) {
GetDateFormat(LOCALE_NEUTRAL, 0, &st, "yyyy-MM-dd",
DateBuf, 50);
GetTimeFormat(LOCALE_NEUTRAL,
TIME_NOTIMEMARKER | TIME_FORCE24HOURFORMAT,
&st, "hh':'mm':'ss", TimeBuf, 50);
snprintf(buf, len, "%sT%s.%03uZ", DateBuf, TimeBuf,
st.wMilliseconds);
} else {
buf[0] = 0;
}
}
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