a_utctm.c 8.6 KB

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  1. /* crypto/asn1/a_utctm.c */
  2. /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  3. * All rights reserved.
  4. *
  5. * This package is an SSL implementation written
  6. * by Eric Young (eay@cryptsoft.com).
  7. * The implementation was written so as to conform with Netscapes SSL.
  8. *
  9. * This library is free for commercial and non-commercial use as long as
  10. * the following conditions are aheared to. The following conditions
  11. * apply to all code found in this distribution, be it the RC4, RSA,
  12. * lhash, DES, etc., code; not just the SSL code. The SSL documentation
  13. * included with this distribution is covered by the same copyright terms
  14. * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15. *
  16. * Copyright remains Eric Young's, and as such any Copyright notices in
  17. * the code are not to be removed.
  18. * If this package is used in a product, Eric Young should be given attribution
  19. * as the author of the parts of the library used.
  20. * This can be in the form of a textual message at program startup or
  21. * in documentation (online or textual) provided with the package.
  22. *
  23. * Redistribution and use in source and binary forms, with or without
  24. * modification, are permitted provided that the following conditions
  25. * are met:
  26. * 1. Redistributions of source code must retain the copyright
  27. * notice, this list of conditions and the following disclaimer.
  28. * 2. Redistributions in binary form must reproduce the above copyright
  29. * notice, this list of conditions and the following disclaimer in the
  30. * documentation and/or other materials provided with the distribution.
  31. * 3. All advertising materials mentioning features or use of this software
  32. * must display the following acknowledgement:
  33. * "This product includes cryptographic software written by
  34. * Eric Young (eay@cryptsoft.com)"
  35. * The word 'cryptographic' can be left out if the rouines from the library
  36. * being used are not cryptographic related :-).
  37. * 4. If you include any Windows specific code (or a derivative thereof) from
  38. * the apps directory (application code) you must include an acknowledgement:
  39. * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40. *
  41. * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51. * SUCH DAMAGE.
  52. *
  53. * The licence and distribution terms for any publically available version or
  54. * derivative of this code cannot be changed. i.e. this code cannot simply be
  55. * copied and put under another distribution licence
  56. * [including the GNU Public Licence.]
  57. */
  58. #include <stdio.h>
  59. #include <time.h>
  60. #include "cryptlib.h"
  61. #include "o_time.h"
  62. #include <openssl/asn1.h>
  63. #if 0
  64. int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp)
  65. {
  66. #ifndef CHARSET_EBCDIC
  67. return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
  68. V_ASN1_UTCTIME,V_ASN1_UNIVERSAL));
  69. #else
  70. /* KLUDGE! We convert to ascii before writing DER */
  71. int len;
  72. char tmp[24];
  73. ASN1_STRING x = *(ASN1_STRING *)a;
  74. len = x.length;
  75. ebcdic2ascii(tmp, x.data, (len >= sizeof tmp) ? sizeof tmp : len);
  76. x.data = tmp;
  77. return i2d_ASN1_bytes(&x, pp, V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);
  78. #endif
  79. }
  80. ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp,
  81. long length)
  82. {
  83. ASN1_UTCTIME *ret=NULL;
  84. ret=(ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length,
  85. V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);
  86. if (ret == NULL)
  87. {
  88. ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ERR_R_NESTED_ASN1_ERROR);
  89. return(NULL);
  90. }
  91. #ifdef CHARSET_EBCDIC
  92. ascii2ebcdic(ret->data, ret->data, ret->length);
  93. #endif
  94. if (!ASN1_UTCTIME_check(ret))
  95. {
  96. ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ASN1_R_INVALID_TIME_FORMAT);
  97. goto err;
  98. }
  99. return(ret);
  100. err:
  101. if ((ret != NULL) && ((a == NULL) || (*a != ret)))
  102. M_ASN1_UTCTIME_free(ret);
  103. return(NULL);
  104. }
  105. #endif
  106. int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
  107. {
  108. static const int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0};
  109. static const int max[8]={99,12,31,23,59,59,12,59};
  110. char *a;
  111. int n,i,l,o;
  112. if (d->type != V_ASN1_UTCTIME) return(0);
  113. l=d->length;
  114. a=(char *)d->data;
  115. o=0;
  116. if (l < 11) goto err;
  117. for (i=0; i<6; i++)
  118. {
  119. if ((i == 5) && ((a[o] == 'Z') ||
  120. (a[o] == '+') || (a[o] == '-')))
  121. { i++; break; }
  122. if ((a[o] < '0') || (a[o] > '9')) goto err;
  123. n= a[o]-'0';
  124. if (++o > l) goto err;
  125. if ((a[o] < '0') || (a[o] > '9')) goto err;
  126. n=(n*10)+ a[o]-'0';
  127. if (++o > l) goto err;
  128. if ((n < min[i]) || (n > max[i])) goto err;
  129. }
  130. if (a[o] == 'Z')
  131. o++;
  132. else if ((a[o] == '+') || (a[o] == '-'))
  133. {
  134. o++;
  135. if (o+4 > l) goto err;
  136. for (i=6; i<8; i++)
  137. {
  138. if ((a[o] < '0') || (a[o] > '9')) goto err;
  139. n= a[o]-'0';
  140. o++;
  141. if ((a[o] < '0') || (a[o] > '9')) goto err;
  142. n=(n*10)+ a[o]-'0';
  143. if ((n < min[i]) || (n > max[i])) goto err;
  144. o++;
  145. }
  146. }
  147. return(o == l);
  148. err:
  149. return(0);
  150. }
  151. int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
  152. {
  153. ASN1_UTCTIME t;
  154. t.type=V_ASN1_UTCTIME;
  155. t.length=strlen(str);
  156. t.data=(unsigned char *)str;
  157. if (ASN1_UTCTIME_check(&t))
  158. {
  159. if (s != NULL)
  160. {
  161. if (!ASN1_STRING_set((ASN1_STRING *)s,
  162. (unsigned char *)str,t.length))
  163. return 0;
  164. s->type = V_ASN1_UTCTIME;
  165. }
  166. return(1);
  167. }
  168. else
  169. return(0);
  170. }
  171. ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
  172. {
  173. return ASN1_UTCTIME_adj(s, t, 0, 0);
  174. }
  175. ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
  176. int offset_day, long offset_sec)
  177. {
  178. char *p;
  179. struct tm *ts;
  180. struct tm data;
  181. size_t len = 20;
  182. if (s == NULL)
  183. s=M_ASN1_UTCTIME_new();
  184. if (s == NULL)
  185. return(NULL);
  186. ts=OPENSSL_gmtime(&t, &data);
  187. if (ts == NULL)
  188. return(NULL);
  189. if (offset_day || offset_sec)
  190. {
  191. if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
  192. return NULL;
  193. }
  194. if((ts->tm_year < 50) || (ts->tm_year >= 150))
  195. return NULL;
  196. p=(char *)s->data;
  197. if ((p == NULL) || ((size_t)s->length < len))
  198. {
  199. p=OPENSSL_malloc(len);
  200. if (p == NULL)
  201. {
  202. ASN1err(ASN1_F_ASN1_UTCTIME_ADJ,ERR_R_MALLOC_FAILURE);
  203. return(NULL);
  204. }
  205. if (s->data != NULL)
  206. OPENSSL_free(s->data);
  207. s->data=(unsigned char *)p;
  208. }
  209. BIO_snprintf(p,len,"%02d%02d%02d%02d%02d%02dZ",ts->tm_year%100,
  210. ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);
  211. s->length=strlen(p);
  212. s->type=V_ASN1_UTCTIME;
  213. #ifdef CHARSET_EBCDIC_not
  214. ebcdic2ascii(s->data, s->data, s->length);
  215. #endif
  216. return(s);
  217. }
  218. int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
  219. {
  220. struct tm *tm;
  221. struct tm data;
  222. int offset;
  223. int year;
  224. #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
  225. if (s->data[12] == 'Z')
  226. offset=0;
  227. else
  228. {
  229. offset = g2(s->data+13)*60+g2(s->data+15);
  230. if (s->data[12] == '-')
  231. offset = -offset;
  232. }
  233. t -= offset*60; /* FIXME: may overflow in extreme cases */
  234. tm = OPENSSL_gmtime(&t, &data);
  235. #define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1
  236. year = g2(s->data);
  237. if (year < 50)
  238. year += 100;
  239. return_cmp(year, tm->tm_year);
  240. return_cmp(g2(s->data+2) - 1, tm->tm_mon);
  241. return_cmp(g2(s->data+4), tm->tm_mday);
  242. return_cmp(g2(s->data+6), tm->tm_hour);
  243. return_cmp(g2(s->data+8), tm->tm_min);
  244. return_cmp(g2(s->data+10), tm->tm_sec);
  245. #undef g2
  246. #undef return_cmp
  247. return 0;
  248. }
  249. #if 0
  250. time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
  251. {
  252. struct tm tm;
  253. int offset;
  254. memset(&tm,'\0',sizeof tm);
  255. #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
  256. tm.tm_year=g2(s->data);
  257. if(tm.tm_year < 50)
  258. tm.tm_year+=100;
  259. tm.tm_mon=g2(s->data+2)-1;
  260. tm.tm_mday=g2(s->data+4);
  261. tm.tm_hour=g2(s->data+6);
  262. tm.tm_min=g2(s->data+8);
  263. tm.tm_sec=g2(s->data+10);
  264. if(s->data[12] == 'Z')
  265. offset=0;
  266. else
  267. {
  268. offset=g2(s->data+13)*60+g2(s->data+15);
  269. if(s->data[12] == '-')
  270. offset= -offset;
  271. }
  272. #undef g2
  273. return mktime(&tm)-offset*60; /* FIXME: mktime assumes the current timezone
  274. * instead of UTC, and unless we rewrite OpenSSL
  275. * in Lisp we cannot locally change the timezone
  276. * without possibly interfering with other parts
  277. * of the program. timegm, which uses UTC, is
  278. * non-standard.
  279. * Also time_t is inappropriate for general
  280. * UTC times because it may a 32 bit type. */
  281. }
  282. #endif