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-rw-r--r--lib/isc/win32/time.c388
1 files changed, 388 insertions, 0 deletions
diff --git a/lib/isc/win32/time.c b/lib/isc/win32/time.c
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+++ b/lib/isc/win32/time.c
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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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