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380 lines
12 KiB
380 lines
12 KiB
/* crypto/o_time.c */ |
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/* |
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* Written by Richard Levitte (richard@levitte.org) for the OpenSSL project |
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* 2001. |
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*/ |
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/* |
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project |
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* 2008. |
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*/ |
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/* ==================================================================== |
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* Copyright (c) 2001 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* licensing@OpenSSL.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This product includes cryptographic software written by Eric Young |
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* (eay@cryptsoft.com). This product includes software written by Tim |
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* Hudson (tjh@cryptsoft.com). |
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* |
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*/ |
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#include <openssl/e_os2.h> |
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#include <string.h> |
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#include "o_time.h" |
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#ifdef OPENSSL_SYS_VMS |
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# if __CRTL_VER >= 70000000 && \ |
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(defined _POSIX_C_SOURCE || !defined _ANSI_C_SOURCE) |
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# define VMS_GMTIME_OK |
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# endif |
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# ifndef VMS_GMTIME_OK |
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# include <libdtdef.h> |
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# include <lib$routines.h> |
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# include <lnmdef.h> |
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# include <starlet.h> |
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# include <descrip.h> |
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# include <stdlib.h> |
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# endif /* ndef VMS_GMTIME_OK */ |
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#endif |
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struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result) |
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{ |
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struct tm *ts = NULL; |
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#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) |
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/* |
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* should return &data, but doesn't on some systems, so we don't even |
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* look at the return value |
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*/ |
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gmtime_r(timer, result); |
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ts = result; |
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#elif !defined(OPENSSL_SYS_VMS) || defined(VMS_GMTIME_OK) |
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ts = gmtime(timer); |
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if (ts == NULL) |
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return NULL; |
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memcpy(result, ts, sizeof(struct tm)); |
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ts = result; |
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#endif |
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#if defined( OPENSSL_SYS_VMS) && !defined( VMS_GMTIME_OK) |
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if (ts == NULL) { |
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static $DESCRIPTOR(tabnam, "LNM$DCL_LOGICAL"); |
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static $DESCRIPTOR(lognam, "SYS$TIMEZONE_DIFFERENTIAL"); |
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char logvalue[256]; |
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unsigned int reslen = 0; |
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struct { |
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short buflen; |
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short code; |
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void *bufaddr; |
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unsigned int *reslen; |
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} itemlist[] = { |
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{ |
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0, LNM$_STRING, 0, 0 |
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}, |
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{ |
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0, 0, 0, 0 |
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}, |
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}; |
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int status; |
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time_t t; |
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/* Get the value for SYS$TIMEZONE_DIFFERENTIAL */ |
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itemlist[0].buflen = sizeof(logvalue); |
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itemlist[0].bufaddr = logvalue; |
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itemlist[0].reslen = &reslen; |
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status = sys$trnlnm(0, &tabnam, &lognam, 0, itemlist); |
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if (!(status & 1)) |
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return NULL; |
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logvalue[reslen] = '\0'; |
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t = *timer; |
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/* The following is extracted from the DEC C header time.h */ |
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/* |
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** Beginning in OpenVMS Version 7.0 mktime, time, ctime, strftime |
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** have two implementations. One implementation is provided |
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** for compatibility and deals with time in terms of local time, |
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** the other __utc_* deals with time in terms of UTC. |
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*/ |
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/* |
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* We use the same conditions as in said time.h to check if we should |
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* assume that t contains local time (and should therefore be |
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* adjusted) or UTC (and should therefore be left untouched). |
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*/ |
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# if __CRTL_VER < 70000000 || defined _VMS_V6_SOURCE |
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/* Get the numerical value of the equivalence string */ |
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status = atoi(logvalue); |
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/* and use it to move time to GMT */ |
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t -= status; |
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# endif |
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/* then convert the result to the time structure */ |
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/* |
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* Since there was no gmtime_r() to do this stuff for us, we have to |
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* do it the hard way. |
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*/ |
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{ |
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/*- |
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* The VMS epoch is the astronomical Smithsonian date, |
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if I remember correctly, which is November 17, 1858. |
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Furthermore, time is measure in thenths of microseconds |
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and stored in quadwords (64 bit integers). unix_epoch |
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below is January 1st 1970 expressed as a VMS time. The |
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following code was used to get this number: |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <lib$routines.h> |
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#include <starlet.h> |
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main() |
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{ |
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unsigned long systime[2]; |
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unsigned short epoch_values[7] = |
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{ 1970, 1, 1, 0, 0, 0, 0 }; |
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lib$cvt_vectim(epoch_values, systime); |
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printf("%u %u", systime[0], systime[1]); |
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} |
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*/ |
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unsigned long unix_epoch[2] = { 1273708544, 8164711 }; |
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unsigned long deltatime[2]; |
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unsigned long systime[2]; |
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struct vms_vectime { |
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short year, month, day, hour, minute, second, centi_second; |
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} time_values; |
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long operation; |
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/* |
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* Turn the number of seconds since January 1st 1970 to an |
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* internal delta time. Note that lib$cvt_to_internal_time() will |
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* assume that t is signed, and will therefore break on 32-bit |
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* systems some time in 2038. |
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*/ |
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operation = LIB$K_DELTA_SECONDS; |
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status = lib$cvt_to_internal_time(&operation, &t, deltatime); |
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/* |
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* Add the delta time with the Unix epoch and we have the current |
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* UTC time in internal format |
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*/ |
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status = lib$add_times(unix_epoch, deltatime, systime); |
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/* Turn the internal time into a time vector */ |
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status = sys$numtim(&time_values, systime); |
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/* Fill in the struct tm with the result */ |
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result->tm_sec = time_values.second; |
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result->tm_min = time_values.minute; |
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result->tm_hour = time_values.hour; |
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result->tm_mday = time_values.day; |
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result->tm_mon = time_values.month - 1; |
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result->tm_year = time_values.year - 1900; |
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operation = LIB$K_DAY_OF_WEEK; |
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status = lib$cvt_from_internal_time(&operation, |
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&result->tm_wday, systime); |
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result->tm_wday %= 7; |
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operation = LIB$K_DAY_OF_YEAR; |
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status = lib$cvt_from_internal_time(&operation, |
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&result->tm_yday, systime); |
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result->tm_yday--; |
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result->tm_isdst = 0; /* There's no way to know... */ |
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ts = result; |
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} |
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} |
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#endif |
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return ts; |
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} |
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/* |
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* Take a tm structure and add an offset to it. This avoids any OS issues |
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* with restricted date types and overflows which cause the year 2038 |
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* problem. |
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*/ |
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#define SECS_PER_DAY (24 * 60 * 60) |
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static long date_to_julian(int y, int m, int d); |
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static void julian_to_date(long jd, int *y, int *m, int *d); |
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int OPENSSL_gmtime_adj(struct tm *tm, int off_day, long offset_sec) |
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{ |
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int offset_hms, offset_day; |
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long time_jd; |
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int time_year, time_month, time_day; |
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/* split offset into days and day seconds */ |
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offset_day = offset_sec / SECS_PER_DAY; |
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/* Avoid sign issues with % operator */ |
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offset_hms = offset_sec - (offset_day * SECS_PER_DAY); |
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offset_day += off_day; |
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/* Add current time seconds to offset */ |
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offset_hms += tm->tm_hour * 3600 + tm->tm_min * 60 + tm->tm_sec; |
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/* Adjust day seconds if overflow */ |
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if (offset_hms >= SECS_PER_DAY) { |
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offset_day++; |
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offset_hms -= SECS_PER_DAY; |
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} else if (offset_hms < 0) { |
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offset_day--; |
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offset_hms += SECS_PER_DAY; |
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} |
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/* |
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* Convert date of time structure into a Julian day number. |
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*/ |
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time_year = tm->tm_year + 1900; |
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time_month = tm->tm_mon + 1; |
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time_day = tm->tm_mday; |
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time_jd = date_to_julian(time_year, time_month, time_day); |
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/* Work out Julian day of new date */ |
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time_jd += offset_day; |
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if (time_jd < 0) |
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return 0; |
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/* Convert Julian day back to date */ |
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julian_to_date(time_jd, &time_year, &time_month, &time_day); |
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if (time_year < 1900 || time_year > 9999) |
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return 0; |
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/* Update tm structure */ |
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tm->tm_year = time_year - 1900; |
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tm->tm_mon = time_month - 1; |
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tm->tm_mday = time_day; |
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tm->tm_hour = offset_hms / 3600; |
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tm->tm_min = (offset_hms / 60) % 60; |
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tm->tm_sec = offset_hms % 60; |
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return 1; |
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} |
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/* |
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* Convert date to and from julian day Uses Fliegel & Van Flandern algorithm |
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*/ |
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static long date_to_julian(int y, int m, int d) |
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{ |
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return (1461 * (y + 4800 + (m - 14) / 12)) / 4 + |
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(367 * (m - 2 - 12 * ((m - 14) / 12))) / 12 - |
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(3 * ((y + 4900 + (m - 14) / 12) / 100)) / 4 + d - 32075; |
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} |
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static void julian_to_date(long jd, int *y, int *m, int *d) |
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{ |
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long L = jd + 68569; |
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long n = (4 * L) / 146097; |
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long i, j; |
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L = L - (146097 * n + 3) / 4; |
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i = (4000 * (L + 1)) / 1461001; |
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L = L - (1461 * i) / 4 + 31; |
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j = (80 * L) / 2447; |
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*d = L - (2447 * j) / 80; |
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L = j / 11; |
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*m = j + 2 - (12 * L); |
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*y = 100 * (n - 49) + i + L; |
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} |
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#ifdef OPENSSL_TIME_TEST |
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# include <stdio.h> |
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/* |
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* Time checking test code. Check times are identical for a wide range of |
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* offsets. This should be run on a machine with 64 bit time_t or it will |
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* trigger the very errors the routines fix. |
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*/ |
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int main(int argc, char **argv) |
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{ |
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long offset; |
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for (offset = 0; offset < 1000000; offset++) { |
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check_time(offset); |
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check_time(-offset); |
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check_time(offset * 1000); |
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check_time(-offset * 1000); |
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} |
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} |
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int check_time(long offset) |
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{ |
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struct tm tm1, tm2; |
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time_t t1, t2; |
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time(&t1); |
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t2 = t1 + offset; |
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OPENSSL_gmtime(&t2, &tm2); |
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OPENSSL_gmtime(&t1, &tm1); |
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OPENSSL_gmtime_adj(&tm1, 0, offset); |
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if ((tm1.tm_year == tm2.tm_year) && |
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(tm1.tm_mon == tm2.tm_mon) && |
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(tm1.tm_mday == tm2.tm_mday) && |
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(tm1.tm_hour == tm2.tm_hour) && |
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(tm1.tm_min == tm2.tm_min) && (tm1.tm_sec == tm2.tm_sec)) |
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return 1; |
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fprintf(stderr, "TIME ERROR!!\n"); |
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fprintf(stderr, "Time1: %d/%d/%d, %d:%02d:%02d\n", |
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tm2.tm_mday, tm2.tm_mon + 1, tm2.tm_year + 1900, |
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tm2.tm_hour, tm2.tm_min, tm2.tm_sec); |
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fprintf(stderr, "Time2: %d/%d/%d, %d:%02d:%02d\n", |
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tm1.tm_mday, tm1.tm_mon + 1, tm1.tm_year + 1900, |
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tm1.tm_hour, tm1.tm_min, tm1.tm_sec); |
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return 0; |
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} |
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#endif
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