1 /* crypto/o_time.c -*- mode:C; c-file-style: "eay" -*- */
2 /* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
3 * project 2001.
4 */
5 /* ====================================================================
6 * Copyright (c) 2001 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
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
18 * distribution.
19 *
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/)"
24 *
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.
29 *
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.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
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 * ====================================================================
52 *
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).
56 *
57 */
58
59 #include <openssl/e_os2.h>
60 #include <string.h>
61 #include "o_time.h"
62
63 #ifdef OPENSSL_SYS_VMS
64 # include <libdtdef.h>
65 # include <lib$routines.h>
66 # include <lnmdef.h>
67 # include <starlet.h>
68 # include <descrip.h>
69 # include <stdlib.h>
70 #endif
71
OPENSSL_gmtime(const time_t * timer,struct tm * result)72 struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result)
73 {
74 struct tm *ts = NULL;
75
76 #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)
77 /* should return &data, but doesn't on some systems,
78 so we don't even look at the return value */
79 gmtime_r(timer,result);
80 ts = result;
81 #elif !defined(OPENSSL_SYS_VMS)
82 ts = gmtime(timer);
83 if (ts == NULL)
84 return NULL;
85
86 memcpy(result, ts, sizeof(struct tm));
87 ts = result;
88 #endif
89 #ifdef OPENSSL_SYS_VMS
90 if (ts == NULL)
91 {
92 static $DESCRIPTOR(tabnam,"LNM$DCL_LOGICAL");
93 static $DESCRIPTOR(lognam,"SYS$TIMEZONE_DIFFERENTIAL");
94 char logvalue[256];
95 unsigned int reslen = 0;
96 struct {
97 short buflen;
98 short code;
99 void *bufaddr;
100 unsigned int *reslen;
101 } itemlist[] = {
102 { 0, LNM$_STRING, 0, 0 },
103 { 0, 0, 0, 0 },
104 };
105 int status;
106 time_t t;
107
108 /* Get the value for SYS$TIMEZONE_DIFFERENTIAL */
109 itemlist[0].buflen = sizeof(logvalue);
110 itemlist[0].bufaddr = logvalue;
111 itemlist[0].reslen = &reslen;
112 status = sys$trnlnm(0, &tabnam, &lognam, 0, itemlist);
113 if (!(status & 1))
114 return NULL;
115 logvalue[reslen] = '\0';
116
117 t = *timer;
118
119 /* The following is extracted from the DEC C header time.h */
120 /*
121 ** Beginning in OpenVMS Version 7.0 mktime, time, ctime, strftime
122 ** have two implementations. One implementation is provided
123 ** for compatibility and deals with time in terms of local time,
124 ** the other __utc_* deals with time in terms of UTC.
125 */
126 /* We use the same conditions as in said time.h to check if we should
127 assume that t contains local time (and should therefore be adjusted)
128 or UTC (and should therefore be left untouched). */
129 #if __CRTL_VER < 70000000 || defined _VMS_V6_SOURCE
130 /* Get the numerical value of the equivalence string */
131 status = atoi(logvalue);
132
133 /* and use it to move time to GMT */
134 t -= status;
135 #endif
136
137 /* then convert the result to the time structure */
138
139 /* Since there was no gmtime_r() to do this stuff for us,
140 we have to do it the hard way. */
141 {
142 /* The VMS epoch is the astronomical Smithsonian date,
143 if I remember correctly, which is November 17, 1858.
144 Furthermore, time is measure in thenths of microseconds
145 and stored in quadwords (64 bit integers). unix_epoch
146 below is January 1st 1970 expressed as a VMS time. The
147 following code was used to get this number:
148
149 #include <stdio.h>
150 #include <stdlib.h>
151 #include <lib$routines.h>
152 #include <starlet.h>
153
154 main()
155 {
156 unsigned long systime[2];
157 unsigned short epoch_values[7] =
158 { 1970, 1, 1, 0, 0, 0, 0 };
159
160 lib$cvt_vectim(epoch_values, systime);
161
162 printf("%u %u", systime[0], systime[1]);
163 }
164 */
165 unsigned long unix_epoch[2] = { 1273708544, 8164711 };
166 unsigned long deltatime[2];
167 unsigned long systime[2];
168 struct vms_vectime
169 {
170 short year, month, day, hour, minute, second,
171 centi_second;
172 } time_values;
173 long operation;
174
175 /* Turn the number of seconds since January 1st 1970 to
176 an internal delta time.
177 Note that lib$cvt_to_internal_time() will assume
178 that t is signed, and will therefore break on 32-bit
179 systems some time in 2038.
180 */
181 operation = LIB$K_DELTA_SECONDS;
182 status = lib$cvt_to_internal_time(&operation,
183 &t, deltatime);
184
185 /* Add the delta time with the Unix epoch and we have
186 the current UTC time in internal format */
187 status = lib$add_times(unix_epoch, deltatime, systime);
188
189 /* Turn the internal time into a time vector */
190 status = sys$numtim(&time_values, systime);
191
192 /* Fill in the struct tm with the result */
193 result->tm_sec = time_values.second;
194 result->tm_min = time_values.minute;
195 result->tm_hour = time_values.hour;
196 result->tm_mday = time_values.day;
197 result->tm_mon = time_values.month - 1;
198 result->tm_year = time_values.year - 1900;
199
200 operation = LIB$K_DAY_OF_WEEK;
201 status = lib$cvt_from_internal_time(&operation,
202 &result->tm_wday, systime);
203 result->tm_wday %= 7;
204
205 operation = LIB$K_DAY_OF_YEAR;
206 status = lib$cvt_from_internal_time(&operation,
207 &result->tm_yday, systime);
208 result->tm_yday--;
209
210 result->tm_isdst = 0; /* There's no way to know... */
211
212 ts = result;
213 }
214 }
215 #endif
216 return ts;
217 }
218