o_time.c 7.2 KB

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  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. #include <openssl/e_os2.h>
  59. #include <string.h>
  60. #include "o_time.h"
  61. #ifdef OPENSSL_SYS_VMS
  62. # include <libdtdef.h>
  63. # include <lib$routines.h>
  64. # include <lnmdef.h>
  65. # include <starlet.h>
  66. # include <descrip.h>
  67. # include <stdlib.h>
  68. #endif
  69. struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result)
  70. {
  71. struct tm *ts = NULL;
  72. #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)
  73. /* should return &data, but doesn't on some systems,
  74. so we don't even look at the return value */
  75. gmtime_r(timer,result);
  76. ts = result;
  77. #elif !defined(OPENSSL_SYS_VMS)
  78. ts = gmtime(timer);
  79. if (ts == NULL)
  80. return NULL;
  81. memcpy(result, ts, sizeof(struct tm));
  82. ts = result;
  83. #endif
  84. #ifdef OPENSSL_SYS_VMS
  85. if (ts == NULL)
  86. {
  87. static $DESCRIPTOR(tabnam,"LNM$DCL_LOGICAL");
  88. static $DESCRIPTOR(lognam,"SYS$TIMEZONE_DIFFERENTIAL");
  89. char logvalue[256];
  90. unsigned int reslen = 0;
  91. struct {
  92. short buflen;
  93. short code;
  94. void *bufaddr;
  95. unsigned int *reslen;
  96. } itemlist[] = {
  97. { 0, LNM$_STRING, 0, 0 },
  98. { 0, 0, 0, 0 },
  99. };
  100. int status;
  101. time_t t;
  102. /* Get the value for SYS$TIMEZONE_DIFFERENTIAL */
  103. itemlist[0].buflen = sizeof(logvalue);
  104. itemlist[0].bufaddr = logvalue;
  105. itemlist[0].reslen = &reslen;
  106. status = sys$trnlnm(0, &tabnam, &lognam, 0, itemlist);
  107. if (!(status & 1))
  108. return NULL;
  109. logvalue[reslen] = '\0';
  110. t = *timer;
  111. /* The following is extracted from the DEC C header time.h */
  112. /*
  113. ** Beginning in OpenVMS Version 7.0 mktime, time, ctime, strftime
  114. ** have two implementations. One implementation is provided
  115. ** for compatibility and deals with time in terms of local time,
  116. ** the other __utc_* deals with time in terms of UTC.
  117. */
  118. /* We use the same conditions as in said time.h to check if we should
  119. assume that t contains local time (and should therefore be adjusted)
  120. or UTC (and should therefore be left untouched). */
  121. #if __CRTL_VER < 70000000 || defined _VMS_V6_SOURCE
  122. /* Get the numerical value of the equivalence string */
  123. status = atoi(logvalue);
  124. /* and use it to move time to GMT */
  125. t -= status;
  126. #endif
  127. /* then convert the result to the time structure */
  128. /* Since there was no gmtime_r() to do this stuff for us,
  129. we have to do it the hard way. */
  130. {
  131. /* The VMS epoch is the astronomical Smithsonian date,
  132. if I remember correctly, which is November 17, 1858.
  133. Furthermore, time is measure in thenths of microseconds
  134. and stored in quadwords (64 bit integers). unix_epoch
  135. below is January 1st 1970 expressed as a VMS time. The
  136. following code was used to get this number:
  137. #include <stdio.h>
  138. #include <stdlib.h>
  139. #include <lib$routines.h>
  140. #include <starlet.h>
  141. main()
  142. {
  143. unsigned long systime[2];
  144. unsigned short epoch_values[7] =
  145. { 1970, 1, 1, 0, 0, 0, 0 };
  146. lib$cvt_vectim(epoch_values, systime);
  147. printf("%u %u", systime[0], systime[1]);
  148. }
  149. */
  150. unsigned long unix_epoch[2] = { 1273708544, 8164711 };
  151. unsigned long deltatime[2];
  152. unsigned long systime[2];
  153. struct vms_vectime
  154. {
  155. short year, month, day, hour, minute, second,
  156. centi_second;
  157. } time_values;
  158. long operation;
  159. /* Turn the number of seconds since January 1st 1970 to
  160. an internal delta time.
  161. Note that lib$cvt_to_internal_time() will assume
  162. that t is signed, and will therefore break on 32-bit
  163. systems some time in 2038.
  164. */
  165. operation = LIB$K_DELTA_SECONDS;
  166. status = lib$cvt_to_internal_time(&operation,
  167. &t, deltatime);
  168. /* Add the delta time with the Unix epoch and we have
  169. the current UTC time in internal format */
  170. status = lib$add_times(unix_epoch, deltatime, systime);
  171. /* Turn the internal time into a time vector */
  172. status = sys$numtim(&time_values, systime);
  173. /* Fill in the struct tm with the result */
  174. result->tm_sec = time_values.second;
  175. result->tm_min = time_values.minute;
  176. result->tm_hour = time_values.hour;
  177. result->tm_mday = time_values.day;
  178. result->tm_mon = time_values.month - 1;
  179. result->tm_year = time_values.year - 1900;
  180. operation = LIB$K_DAY_OF_WEEK;
  181. status = lib$cvt_from_internal_time(&operation,
  182. &result->tm_wday, systime);
  183. result->tm_wday %= 7;
  184. operation = LIB$K_DAY_OF_YEAR;
  185. status = lib$cvt_from_internal_time(&operation,
  186. &result->tm_yday, systime);
  187. result->tm_yday--;
  188. result->tm_isdst = 0; /* There's no way to know... */
  189. ts = result;
  190. }
  191. }
  192. #endif
  193. return ts;
  194. }