o_time.c revision 296465
1/* crypto/o_time.c -*- mode:C; c-file-style: "eay" -*- */ 2/* 3 * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project 4 * 2001. 5 */ 6/* ==================================================================== 7 * Copyright (c) 2001 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * licensing@OpenSSL.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 * 54 * This product includes cryptographic software written by Eric Young 55 * (eay@cryptsoft.com). This product includes software written by Tim 56 * Hudson (tjh@cryptsoft.com). 57 * 58 */ 59 60#include <openssl/e_os2.h> 61#include <string.h> 62#include "o_time.h" 63 64#ifdef OPENSSL_SYS_VMS 65# include <libdtdef.h> 66# include <lib$routines.h> 67# include <lnmdef.h> 68# include <starlet.h> 69# include <descrip.h> 70# include <stdlib.h> 71#endif 72 73struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result) 74{ 75 struct tm *ts = NULL; 76 77#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) 78 /* 79 * should return &data, but doesn't on some systems, so we don't even 80 * look at the return value 81 */ 82 gmtime_r(timer, result); 83 ts = result; 84#elif !defined(OPENSSL_SYS_VMS) 85 ts = gmtime(timer); 86 if (ts == NULL) 87 return NULL; 88 89 memcpy(result, ts, sizeof(struct tm)); 90 ts = result; 91#endif 92#ifdef OPENSSL_SYS_VMS 93 if (ts == NULL) { 94 static $DESCRIPTOR(tabnam, "LNM$DCL_LOGICAL"); 95 static $DESCRIPTOR(lognam, "SYS$TIMEZONE_DIFFERENTIAL"); 96 char logvalue[256]; 97 unsigned int reslen = 0; 98 struct { 99 short buflen; 100 short code; 101 void *bufaddr; 102 unsigned int *reslen; 103 } itemlist[] = { 104 { 105 0, LNM$_STRING, 0, 0 106 }, 107 { 108 0, 0, 0, 0 109 }, 110 }; 111 int status; 112 time_t t; 113 114 /* Get the value for SYS$TIMEZONE_DIFFERENTIAL */ 115 itemlist[0].buflen = sizeof(logvalue); 116 itemlist[0].bufaddr = logvalue; 117 itemlist[0].reslen = &reslen; 118 status = sys$trnlnm(0, &tabnam, &lognam, 0, itemlist); 119 if (!(status & 1)) 120 return NULL; 121 logvalue[reslen] = '\0'; 122 123 t = *timer; 124 125/* The following is extracted from the DEC C header time.h */ 126 /* 127 ** Beginning in OpenVMS Version 7.0 mktime, time, ctime, strftime 128 ** have two implementations. One implementation is provided 129 ** for compatibility and deals with time in terms of local time, 130 ** the other __utc_* deals with time in terms of UTC. 131 */ 132 /* 133 * We use the same conditions as in said time.h to check if we should 134 * assume that t contains local time (and should therefore be 135 * adjusted) or UTC (and should therefore be left untouched). 136 */ 137# if __CRTL_VER < 70000000 || defined _VMS_V6_SOURCE 138 /* Get the numerical value of the equivalence string */ 139 status = atoi(logvalue); 140 141 /* and use it to move time to GMT */ 142 t -= status; 143# endif 144 145 /* then convert the result to the time structure */ 146 147 /* 148 * Since there was no gmtime_r() to do this stuff for us, we have to 149 * do it the hard way. 150 */ 151 { 152 /*- 153 * The VMS epoch is the astronomical Smithsonian date, 154 if I remember correctly, which is November 17, 1858. 155 Furthermore, time is measure in thenths of microseconds 156 and stored in quadwords (64 bit integers). unix_epoch 157 below is January 1st 1970 expressed as a VMS time. The 158 following code was used to get this number: 159 160 #include <stdio.h> 161 #include <stdlib.h> 162 #include <lib$routines.h> 163 #include <starlet.h> 164 165 main() 166 { 167 unsigned long systime[2]; 168 unsigned short epoch_values[7] = 169 { 1970, 1, 1, 0, 0, 0, 0 }; 170 171 lib$cvt_vectim(epoch_values, systime); 172 173 printf("%u %u", systime[0], systime[1]); 174 } 175 */ 176 unsigned long unix_epoch[2] = { 1273708544, 8164711 }; 177 unsigned long deltatime[2]; 178 unsigned long systime[2]; 179 struct vms_vectime { 180 short year, month, day, hour, minute, second, centi_second; 181 } time_values; 182 long operation; 183 184 /* 185 * Turn the number of seconds since January 1st 1970 to an 186 * internal delta time. Note that lib$cvt_to_internal_time() will 187 * assume that t is signed, and will therefore break on 32-bit 188 * systems some time in 2038. 189 */ 190 operation = LIB$K_DELTA_SECONDS; 191 status = lib$cvt_to_internal_time(&operation, &t, deltatime); 192 193 /* 194 * Add the delta time with the Unix epoch and we have the current 195 * UTC time in internal format 196 */ 197 status = lib$add_times(unix_epoch, deltatime, systime); 198 199 /* Turn the internal time into a time vector */ 200 status = sys$numtim(&time_values, systime); 201 202 /* Fill in the struct tm with the result */ 203 result->tm_sec = time_values.second; 204 result->tm_min = time_values.minute; 205 result->tm_hour = time_values.hour; 206 result->tm_mday = time_values.day; 207 result->tm_mon = time_values.month - 1; 208 result->tm_year = time_values.year - 1900; 209 210 operation = LIB$K_DAY_OF_WEEK; 211 status = lib$cvt_from_internal_time(&operation, 212 &result->tm_wday, systime); 213 result->tm_wday %= 7; 214 215 operation = LIB$K_DAY_OF_YEAR; 216 status = lib$cvt_from_internal_time(&operation, 217 &result->tm_yday, systime); 218 result->tm_yday--; 219 220 result->tm_isdst = 0; /* There's no way to know... */ 221 222 ts = result; 223 } 224 } 225#endif 226 return ts; 227} 228