Index: openssl/crypto/o_time.c |
=================================================================== |
--- openssl/crypto/o_time.c (revision 105093) |
+++ openssl/crypto/o_time.c (working copy) |
@@ -2,6 +2,9 @@ |
/* 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. |
* |
@@ -61,24 +64,30 @@ |
#include "o_time.h" |
#ifdef OPENSSL_SYS_VMS |
-# include <libdtdef.h> |
-# include <lib$routines.h> |
-# include <lnmdef.h> |
-# include <starlet.h> |
-# include <descrip.h> |
-# include <stdlib.h> |
+# if __CRTL_VER >= 70000000 && \ |
+ (defined _POSIX_C_SOURCE || !defined _ANSI_C_SOURCE) |
+# define VMS_GMTIME_OK |
+# endif |
+# ifndef VMS_GMTIME_OK |
+# include <libdtdef.h> |
+# include <lib$routines.h> |
+# include <lnmdef.h> |
+# include <starlet.h> |
+# include <descrip.h> |
+# include <stdlib.h> |
+# endif /* ndef VMS_GMTIME_OK */ |
#endif |
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) && !defined(OPENSSL_SYS_SUNOS) |
+#if defined(OPENSSL_THREADS) && !defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_SYS_OS2) && (!defined(OPENSSL_SYS_VMS) || defined(gmtime_r)) && !defined(OPENSSL_SYS_MACOSX) && !defined(OPENSSL_SYS_SUNOS) |
/* 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) |
+#elif !defined(OPENSSL_SYS_VMS) || defined(VMS_GMTIME_OK) |
ts = gmtime(timer); |
if (ts == NULL) |
return NULL; |
@@ -86,7 +95,7 @@ |
memcpy(result, ts, sizeof(struct tm)); |
ts = result; |
#endif |
-#ifdef OPENSSL_SYS_VMS |
+#if defined( OPENSSL_SYS_VMS) && !defined( VMS_GMTIME_OK) |
if (ts == NULL) |
{ |
static $DESCRIPTOR(tabnam,"LNM$DCL_LOGICAL"); |
@@ -214,4 +223,150 @@ |
} |
#endif |
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); |
+ |
+int OPENSSL_gmtime_adj(struct tm *tm, int off_day, long offset_sec) |
+ { |
+ 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; |
+ |
+ /* 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 = offset_hms / 3600; |
+ tm->tm_min = (offset_hms / 60) % 60; |
+ tm->tm_sec = offset_hms % 60; |
+ |
+ 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; |
+ } |
+ |
+#ifdef OPENSSL_TIME_TEST |
+ |
+#include <stdio.h> |
+ |
+/* Time checking test code. Check times are identical for a wide range of |
+ * offsets. This should be run on a machine with 64 bit time_t or it will |
+ * trigger the very errors the routines fix. |
+ */ |
+ |
+int main(int argc, char **argv) |
+ { |
+ long offset; |
+ for (offset = 0; offset < 1000000; offset++) |
+ { |
+ check_time(offset); |
+ check_time(-offset); |
+ check_time(offset * 1000); |
+ check_time(-offset * 1000); |
+ } |
+ } |
+ |
+int check_time(long offset) |
+ { |
+ struct tm tm1, tm2; |
+ time_t t1, t2; |
+ time(&t1); |
+ t2 = t1 + offset; |
+ OPENSSL_gmtime(&t2, &tm2); |
+ OPENSSL_gmtime(&t1, &tm1); |
+ OPENSSL_gmtime_adj(&tm1, 0, offset); |
+ if ((tm1.tm_year == tm2.tm_year) && |
+ (tm1.tm_mon == tm2.tm_mon) && |
+ (tm1.tm_mday == tm2.tm_mday) && |
+ (tm1.tm_hour == tm2.tm_hour) && |
+ (tm1.tm_min == tm2.tm_min) && |
+ (tm1.tm_sec == tm2.tm_sec)) |
+ return 1; |
+ fprintf(stderr, "TIME ERROR!!\n"); |
+ fprintf(stderr, "Time1: %d/%d/%d, %d:%02d:%02d\n", |
+ tm2.tm_mday, tm2.tm_mon + 1, tm2.tm_year + 1900, |
+ tm2.tm_hour, tm2.tm_min, tm2.tm_sec); |
+ fprintf(stderr, "Time2: %d/%d/%d, %d:%02d:%02d\n", |
+ tm1.tm_mday, tm1.tm_mon + 1, tm1.tm_year + 1900, |
+ tm1.tm_hour, tm1.tm_min, tm1.tm_sec); |
+ return 0; |
+ } |
+ |
+#endif |