--- /dev/null
+/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
+ * project 2001.
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2008.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project. All rights reserved.
+ *
+ * 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.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#if !defined(_POSIX_C_SOURCE)
+#define _POSIX_C_SOURCE 201410L /* for gmtime_r */
+#endif
+
+#include "asn1_locl.h"
+
+#include <time.h>
+
+
+#define SECS_PER_DAY (24 * 60 * 60)
+
+struct tm *OPENSSL_gmtime(const time_t *time, struct tm *result) {
+#if defined(OPENSSL_WINDOWS)
+ if (gmtime_s(result, time)) {
+ return NULL;
+ }
+ return result;
+#else
+ return gmtime_r(time, result);
+#endif
+}
+
+/* Convert date to and from julian day Uses Fliegel & Van Flandern algorithm */
+static long date_to_julian(int y, int m, int d) {
+ return (1461 * (y + 4800 + (m - 14) / 12)) / 4 +
+ (367 * (m - 2 - 12 * ((m - 14) / 12))) / 12 -
+ (3 * ((y + 4900 + (m - 14) / 12) / 100)) / 4 + d - 32075;
+}
+
+static void julian_to_date(long jd, int *y, int *m, int *d) {
+ long L = jd + 68569;
+ long n = (4 * L) / 146097;
+ long i, j;
+
+ L = L - (146097 * n + 3) / 4;
+ i = (4000 * (L + 1)) / 1461001;
+ L = L - (1461 * i) / 4 + 31;
+ j = (80 * L) / 2447;
+ *d = L - (2447 * j) / 80;
+ L = j / 11;
+ *m = j + 2 - (12 * L);
+ *y = 100 * (n - 49) + i + L;
+}
+
+/* Convert tm structure and offset into julian day and seconds */
+static int julian_adj(const struct tm *tm, int off_day, long offset_sec,
+ long *pday, int *psec) {
+ int offset_hms, offset_day;
+ long time_jd;
+ int time_year, time_month, time_day;
+ /* split offset into days and day seconds */
+ offset_day = offset_sec / SECS_PER_DAY;
+ /* Avoid sign issues with % operator */
+ offset_hms = offset_sec - (offset_day * SECS_PER_DAY);
+ offset_day += off_day;
+ /* Add current time seconds to offset */
+ offset_hms += tm->tm_hour * 3600 + tm->tm_min * 60 + tm->tm_sec;
+ /* Adjust day seconds if overflow */
+ if (offset_hms >= SECS_PER_DAY) {
+ offset_day++;
+ offset_hms -= SECS_PER_DAY;
+ } else if (offset_hms < 0) {
+ offset_day--;
+ offset_hms += SECS_PER_DAY;
+ }
+
+ /* Convert date of time structure into a Julian day number. */
+
+ time_year = tm->tm_year + 1900;
+ time_month = tm->tm_mon + 1;
+ time_day = tm->tm_mday;
+
+ time_jd = date_to_julian(time_year, time_month, time_day);
+
+ /* Work out Julian day of new date */
+ time_jd += offset_day;
+
+ if (time_jd < 0) {
+ return 0;
+ }
+
+ *pday = time_jd;
+ *psec = offset_hms;
+ return 1;
+}
+
+int OPENSSL_gmtime_adj(struct tm *tm, int off_day, long offset_sec) {
+ int time_sec, time_year, time_month, time_day;
+ long time_jd;
+
+ /* Convert time and offset into julian day and seconds */
+ if (!julian_adj(tm, off_day, offset_sec, &time_jd, &time_sec)) {
+ return 0;
+ }
+
+ /* Convert Julian day back to date */
+
+ julian_to_date(time_jd, &time_year, &time_month, &time_day);
+
+ if (time_year < 1900 || time_year > 9999) {
+ return 0;
+ }
+
+ /* Update tm structure */
+
+ tm->tm_year = time_year - 1900;
+ tm->tm_mon = time_month - 1;
+ tm->tm_mday = time_day;
+
+ tm->tm_hour = time_sec / 3600;
+ tm->tm_min = (time_sec / 60) % 60;
+ tm->tm_sec = time_sec % 60;
+
+ return 1;
+}
+
+int OPENSSL_gmtime_diff(int *out_days, int *out_secs, const struct tm *from,
+ const struct tm *to) {
+ int from_sec, to_sec, diff_sec;
+ long from_jd, to_jd, diff_day;
+
+ if (!julian_adj(from, 0, 0, &from_jd, &from_sec)) {
+ return 0;
+ }
+ if (!julian_adj(to, 0, 0, &to_jd, &to_sec)) {
+ return 0;
+ }
+
+ diff_day = to_jd - from_jd;
+ diff_sec = to_sec - from_sec;
+ /* Adjust differences so both positive or both negative */
+ if (diff_day > 0 && diff_sec < 0) {
+ diff_day--;
+ diff_sec += SECS_PER_DAY;
+ }
+ if (diff_day < 0 && diff_sec > 0) {
+ diff_day++;
+ diff_sec -= SECS_PER_DAY;
+ }
+
+ if (out_days) {
+ *out_days = (int)diff_day;
+ }
+ if (out_secs) {
+ *out_secs = diff_sec;
+ }
+
+ return 1;
+}
git://repos.xcallymotion.com / motion2.git / blobdiff