o_time.c revision 142426
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 72struct 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