-/* crypto/o_time.c -*- mode:C; c-file-style: "eay" -*- */
-/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
- * project 2001.
- */
-/* ====================================================================
- * 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).
+/*
+ * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <openssl/e_os2.h>
#include <string.h>
-#include "o_time.h"
-
-#ifdef OPENSSL_SYS_VMS
-# include <libdtdef.h>
-# include <lib$routines.h>
-# include <lnmdef.h>
-# include <starlet.h>
-# include <descrip.h>
-# include <stdlib.h>
-#endif
+#include <openssl/crypto.h>
struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result)
- {
- struct tm *ts = NULL;
-
-#if defined(OPENSSL_THREADS) && !defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_SYS_OS2) && !defined(__CYGWIN32__) && (!defined(OPENSSL_SYS_VMS) || defined(gmtime_r)) && !defined(OPENSSL_SYS_MACOSX)
- /* should return &data, but doesn't on some systems,
- so we don't even look at the return value */
- gmtime_r(timer,result);
- ts = result;
-#elif !defined(OPENSSL_SYS_VMS)
- ts = gmtime(timer);
- memcpy(result, ts, sizeof(struct tm));
- ts = result;
+{
+ struct tm *ts = NULL;
+
+#if defined(OPENSSL_THREADS) && defined(OPENSSL_SYS_VMS)
+ {
+ /*
+ * On VMS, gmtime_r() takes a 32-bit pointer as second argument.
+ * Since we can't know that |result| is in a space that can easily
+ * translate to a 32-bit pointer, we must store temporarily on stack
+ * and copy the result. The stack is always reachable with 32-bit
+ * pointers.
+ */
+#if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE
+# pragma pointer_size save
+# pragma pointer_size 32
#endif
-#ifdef OPENSSL_SYS_VMS
- if (ts == NULL)
- {
- static $DESCRIPTOR(tabnam,"LNM$DCL_LOGICAL");
- static $DESCRIPTOR(lognam,"SYS$TIMEZONE_DIFFERENTIAL");
- char logvalue[256];
- unsigned int reslen = 0;
- struct {
- short buflen;
- short code;
- void *bufaddr;
- unsigned int *reslen;
- } itemlist[] = {
- { 0, LNM$_STRING, 0, 0 },
- { 0, 0, 0, 0 },
- };
- int status;
- time_t t;
-
- /* Get the value for SYS$TIMEZONE_DIFFERENTIAL */
- itemlist[0].buflen = sizeof(logvalue);
- itemlist[0].bufaddr = logvalue;
- itemlist[0].reslen = &reslen;
- status = sys$trnlnm(0, &tabnam, &lognam, 0, itemlist);
- if (!(status & 1))
- return NULL;
- logvalue[reslen] = '\0';
-
- /* Get the numerical value of the equivalence string */
- status = atoi(logvalue);
-
- /* and use it to move time to GMT */
- t = *timer - status;
-
- /* then convert the result to the time structure */
-#ifndef OPENSSL_THREADS
- ts=(struct tm *)localtime(&t);
-#else
- /* Since there was no gmtime_r() to do this stuff for us,
- we have to do it the hard way. */
- {
- /* The VMS epoch is the astronomical Smithsonian date,
- if I remember correctly, which is November 17, 1858.
- Furthermore, time is measure in thenths of microseconds
- and stored in quadwords (64 bit integers). unix_epoch
- below is January 1st 1970 expressed as a VMS time. The
- following code was used to get this number:
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <lib$routines.h>
- #include <starlet.h>
-
- main()
- {
- unsigned long systime[2];
- unsigned short epoch_values[7] =
- { 1970, 1, 1, 0, 0, 0, 0 };
-
- lib$cvt_vectim(epoch_values, systime);
-
- printf("%u %u", systime[0], systime[1]);
- }
- */
- unsigned long unix_epoch[2] = { 1273708544, 8164711 };
- unsigned long deltatime[2];
- unsigned long systime[2];
- struct vms_vectime
- {
- short year, month, day, hour, minute, second,
- centi_second;
- } time_values;
- long operation;
-
- /* Turn the number of seconds since January 1st 1970 to
- an internal delta time.
- Note that lib$cvt_to_internal_time() will assume
- that t is signed, and will therefore break on 32-bit
- systems some time in 2038.
- */
- operation = LIB$K_DELTA_SECONDS;
- status = lib$cvt_to_internal_time(&operation,
- &t, deltatime);
-
- /* Add the delta time with the Unix epoch and we have
- the current UTC time in internal format */
- status = lib$add_times(unix_epoch, deltatime, systime);
-
- /* Turn the internal time into a time vector */
- status = sys$numtim(&time_values, systime);
-
- /* Fill in the struct tm with the result */
- result->tm_sec = time_values.second;
- result->tm_min = time_values.minute;
- result->tm_hour = time_values.hour;
- result->tm_mday = time_values.day;
- result->tm_mon = time_values.month - 1;
- result->tm_year = time_values.year - 1900;
-
- operation = LIB$K_DAY_OF_WEEK;
- status = lib$cvt_from_internal_time(&operation,
- &result->tm_wday, systime);
- result->tm_wday %= 7;
-
- operation = LIB$K_DAY_OF_YEAR;
- status = lib$cvt_from_internal_time(&operation,
- &result->tm_yday, systime);
- result->tm_yday--;
-
- result->tm_isdst = 0; /* There's no way to know... */
-
- ts = result;
+ struct tm data, *ts2 = &data;
+#if defined OPENSSL_SYS_VMS && __INITIAL_POINTER_SIZE
+# pragma pointer_size restore
#endif
- }
- }
+ if (gmtime_r(timer, ts2) == NULL)
+ return NULL;
+ memcpy(result, ts2, sizeof(struct tm));
+ ts = result;
+ }
+#elif defined(OPENSSL_THREADS) && !defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_SYS_MACOSX)
+ if (gmtime_r(timer, result) == NULL)
+ return NULL;
+ ts = result;
+#elif defined (OPENSSL_SYS_WINDOWS) && defined(_MSC_VER) && _MSC_VER >= 1400
+ if (gmtime_s(result, timer))
+ return NULL;
+ ts = result;
+#else
+ ts = gmtime(timer);
+ if (ts == NULL)
+ return NULL;
+
+ memcpy(result, ts, sizeof(struct tm));
+ ts = result;
#endif
- return ts;
- }
+ return ts;
+}
+
+/*
+ * Take a tm structure and add an offset to it. This avoids any OS issues
+ * with restricted date types and overflows which cause the year 2038
+ * problem.
+ */
+
+#define SECS_PER_DAY (24 * 60 * 60)
+
+static long date_to_julian(int y, int m, int d);
+static void julian_to_date(long jd, int *y, int *m, int *d);
+static int julian_adj(const struct tm *tm, int off_day, long offset_sec,
+ long *pday, int *psec);
+
+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 *pday, int *psec,
+ 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 (pday)
+ *pday = (int)diff_day;
+ if (psec)
+ *psec = diff_sec;
+
+ return 1;
+
+}
+
+/* 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;
+}
+
+/*
+ * 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;
+}
projects / openssl.git / blobdiff