1 /* crypto/o_time.c -*- mode:C; c-file-style: "eay" -*- */
2 /* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2001 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
59 #include <openssl/e_os2.h>
62 #ifdef OPENSSL_SYS_VMS
63 # include <libdtdef.h>
64 # include <lib$routines.h>
71 struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result)
75 #if defined(OPENSSL_THREADS) && !defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_SYS_OS2) && !defined(__CYGWIN32__) && (!defined(OPENSSL_SYS_VMS) || defined(gmtime_r))
76 /* should return &data, but doesn't on some systems,
77 so we don't even look at the return value */
78 gmtime_r(timer,result);
80 #elif !defined(OPENSSL_SYS_VMS)
82 memcpy(result, ts, sizeof(struct tm));
85 #ifdef OPENSSL_SYS_VMS
88 static $DESCRIPTOR(tabnam,"LNM$DCL_LOGICAL");
89 static $DESCRIPTOR(lognam,"SYS$TIMEZONE_DIFFERENTIAL");
91 unsigned int reslen = 0;
98 { 0, LNM$_STRING, 0, 0 },
104 /* Get the value for SYS$TIMEZONE_DIFFERENTIAL */
105 itemlist[0].buflen = sizeof(logvalue);
106 itemlist[0].bufaddr = logvalue;
107 itemlist[0].reslen = &reslen;
108 status = sys$trnlnm(0, &tabnam, &lognam, 0, itemlist);
111 logvalue[reslen] = '\0';
113 /* Get the numerical value of the equivalence string */
114 status = atoi(logvalue);
116 /* and use it to move time to GMT */
119 /* then convert the result to the time structure */
120 #ifndef OPENSSL_THREADS
121 ts=(struct tm *)localtime(&t);
123 /* Since there was no gmtime_r() to do this stuff for us,
124 we have to do it the hard way. */
126 /* The VMS epoch is the astronomical Smithsonian date,
127 if I remember correctly, which is November 17, 1858.
128 Furthermore, time is measure in thenths of microseconds
129 and stored in quadwords (64 bit integers). unix_epoch
130 below is January 1st 1970 expressed as a VMS time. The
131 following code was used to get this number:
135 #include <lib$routines.h>
140 unsigned long systime[2];
141 unsigned short epoch_values[7] =
142 { 1970, 1, 1, 0, 0, 0, 0 };
144 lib$cvt_vectim(epoch_values, systime);
146 printf("%u %u", systime[0], systime[1]);
149 unsigned long unix_epoch[2] = { 1273708544, 8164711 };
150 unsigned long deltatime[2];
151 unsigned long systime[2];
154 short year, month, day, hour, minute, second,
159 /* Turn the number of seconds since January 1st 1970 to
160 an internal delta time.
161 Note that lib$cvt_to_internal_time() will assume
162 that t is signed, and will therefore break on 32-bit
163 systems some time in 2038.
165 operation = LIB$K_DELTA_SECONDS;
166 status = lib$cvt_to_internal_time(&operation,
169 /* Add the delta time with the Unix epoch and we have
170 the current UTC time in internal format */
171 status = lib$add_times(unix_epoch, deltatime, systime);
173 /* Turn the internal time into a time vector */
174 status = sys$numtim(&time_values, systime);
176 /* Fill in the struct tm with the result */
177 result->tm_sec = time_values.second;
178 result->tm_min = time_values.minute;
179 result->tm_hour = time_values.hour;
180 result->tm_mday = time_values.day;
181 result->tm_mon = time_values.month - 1;
182 result->tm_year = time_values.year - 1900;
184 operation = LIB$K_DAY_OF_WEEK;
185 status = lib$cvt_from_internal_time(&operation,
186 &result->tm_wday, systime);
187 result->tm_wday %= 7;
189 operation = LIB$K_DAY_OF_YEAR;
190 status = lib$cvt_from_internal_time(&operation,
191 &result->tm_yday, systime);
194 result->tm_isdst = 0; /* There's no way to know... */