1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay@cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay@cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57#include <openssl/asn1.h> 58 59#include <openssl/err.h> 60#include <openssl/mem.h> 61#include <openssl/time_support.h> 62 63 64#if 0 65int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp) 66 { 67 return(i2d_ASN1_bytes((ASN1_STRING *)a,pp, 68 V_ASN1_UTCTIME,V_ASN1_UNIVERSAL)); 69 } 70 71 72ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp, 73 long length) 74 { 75 ASN1_UTCTIME *ret=NULL; 76 77 ret=(ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length, 78 V_ASN1_UTCTIME,V_ASN1_UNIVERSAL); 79 if (ret == NULL) 80 { 81 OPENSSL_PUT_ERROR(ASN1, XXX, ERR_R_NESTED_ASN1_ERROR); 82 return(NULL); 83 } 84 if (!ASN1_UTCTIME_check(ret)) 85 { 86 OPENSSL_PUT_ERROR(ASN1, XXX, ASN1_R_INVALID_TIME_FORMAT); 87 goto err; 88 } 89 90 return(ret); 91err: 92 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 93 M_ASN1_UTCTIME_free(ret); 94 return(NULL); 95 } 96 97#endif 98 99int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d) 100 { 101 static const int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0}; 102 static const int max[8]={99,12,31,23,59,59,12,59}; 103 char *a; 104 int n,i,l,o; 105 106 if (d->type != V_ASN1_UTCTIME) return(0); 107 l=d->length; 108 a=(char *)d->data; 109 o=0; 110 111 if (l < 11) goto err; 112 for (i=0; i<6; i++) 113 { 114 if ((i == 5) && ((a[o] == 'Z') || 115 (a[o] == '+') || (a[o] == '-'))) 116 { 117 i++; 118 if (tm) 119 tm->tm_sec = 0; 120 break; 121 } 122 if ((a[o] < '0') || (a[o] > '9')) goto err; 123 n= a[o]-'0'; 124 if (++o > l) goto err; 125 126 if ((a[o] < '0') || (a[o] > '9')) goto err; 127 n=(n*10)+ a[o]-'0'; 128 if (++o > l) goto err; 129 130 if ((n < min[i]) || (n > max[i])) goto err; 131 if (tm) 132 { 133 switch(i) 134 { 135 case 0: 136 tm->tm_year = n < 50 ? n + 100 : n; 137 break; 138 case 1: 139 tm->tm_mon = n - 1; 140 break; 141 case 2: 142 tm->tm_mday = n; 143 break; 144 case 3: 145 tm->tm_hour = n; 146 break; 147 case 4: 148 tm->tm_min = n; 149 break; 150 case 5: 151 tm->tm_sec = n; 152 break; 153 } 154 } 155 } 156 if (a[o] == 'Z') 157 o++; 158 else if ((a[o] == '+') || (a[o] == '-')) 159 { 160 int offsign = a[o] == '-' ? -1 : 1, offset = 0; 161 o++; 162 if (o+4 > l) goto err; 163 for (i=6; i<8; i++) 164 { 165 if ((a[o] < '0') || (a[o] > '9')) goto err; 166 n= a[o]-'0'; 167 o++; 168 if ((a[o] < '0') || (a[o] > '9')) goto err; 169 n=(n*10)+ a[o]-'0'; 170 if ((n < min[i]) || (n > max[i])) goto err; 171 if (tm) 172 { 173 if (i == 6) 174 offset = n * 3600; 175 else if (i == 7) 176 offset += n * 60; 177 } 178 o++; 179 } 180 if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign)) 181 return 0; 182 } 183 return o == l; 184err: 185 return 0; 186 } 187 188int ASN1_UTCTIME_check(const ASN1_UTCTIME *d) 189 { 190 return asn1_utctime_to_tm(NULL, d); 191 } 192 193int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str) 194 { 195 ASN1_UTCTIME t; 196 197 t.type=V_ASN1_UTCTIME; 198 t.length=strlen(str); 199 t.data=(unsigned char *)str; 200 if (ASN1_UTCTIME_check(&t)) 201 { 202 if (s != NULL) 203 { 204 if (!ASN1_STRING_set((ASN1_STRING *)s, 205 (unsigned char *)str,t.length)) 206 return 0; 207 s->type = V_ASN1_UTCTIME; 208 } 209 return(1); 210 } 211 else 212 return(0); 213 } 214 215ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t) 216 { 217 return ASN1_UTCTIME_adj(s, t, 0, 0); 218 } 219 220ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t, 221 int offset_day, long offset_sec) 222 { 223 char *p; 224 struct tm *ts; 225 struct tm data; 226 size_t len = 20; 227 int free_s = 0; 228 229 if (s == NULL) 230 { 231 free_s = 1; 232 s=M_ASN1_UTCTIME_new(); 233 } 234 if (s == NULL) 235 goto err; 236 237 238 ts=OPENSSL_gmtime(&t, &data); 239 if (ts == NULL) 240 goto err; 241 242 if (offset_day || offset_sec) 243 { 244 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 245 goto err; 246 } 247 248 if((ts->tm_year < 50) || (ts->tm_year >= 150)) 249 goto err; 250 251 p=(char *)s->data; 252 if ((p == NULL) || ((size_t)s->length < len)) 253 { 254 p=OPENSSL_malloc(len); 255 if (p == NULL) 256 { 257 OPENSSL_PUT_ERROR(ASN1, ASN1_UTCTIME_adj, ERR_R_MALLOC_FAILURE); 258 goto err; 259 } 260 if (s->data != NULL) 261 OPENSSL_free(s->data); 262 s->data=(unsigned char *)p; 263 } 264 265 BIO_snprintf(p,len,"%02d%02d%02d%02d%02d%02dZ",ts->tm_year%100, 266 ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec); 267 s->length=strlen(p); 268 s->type=V_ASN1_UTCTIME; 269 return(s); 270 err: 271 if (free_s && s) 272 M_ASN1_UTCTIME_free(s); 273 return NULL; 274 } 275 276 277int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t) 278 { 279 struct tm stm, ttm; 280 int day, sec; 281 282 if (!asn1_utctime_to_tm(&stm, s)) 283 return -2; 284 285 if (!OPENSSL_gmtime(&t, &ttm)) 286 return -2; 287 288 if (!OPENSSL_gmtime_diff(&day, &sec, &stm, &ttm)) 289 return -2; 290 291 if (day > 0) 292 return 1; 293 if (day < 0) 294 return -1; 295 if (sec > 0) 296 return 1; 297 if (sec < 0) 298 return -1; 299 return 0; 300 } 301 302 303#if 0 304time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s) 305 { 306 struct tm tm; 307 int offset; 308 309 memset(&tm,'\0',sizeof tm); 310 311#define g2(p) (((p)[0]-'0')*10+(p)[1]-'0') 312 tm.tm_year=g2(s->data); 313 if(tm.tm_year < 50) 314 tm.tm_year+=100; 315 tm.tm_mon=g2(s->data+2)-1; 316 tm.tm_mday=g2(s->data+4); 317 tm.tm_hour=g2(s->data+6); 318 tm.tm_min=g2(s->data+8); 319 tm.tm_sec=g2(s->data+10); 320 if(s->data[12] == 'Z') 321 offset=0; 322 else 323 { 324 offset=g2(s->data+13)*60+g2(s->data+15); 325 if(s->data[12] == '-') 326 offset= -offset; 327 } 328#undef g2 329 330 return mktime(&tm)-offset*60; /* FIXME: mktime assumes the current timezone 331 * instead of UTC, and unless we rewrite OpenSSL 332 * in Lisp we cannot locally change the timezone 333 * without possibly interfering with other parts 334 * of the program. timegm, which uses UTC, is 335 * non-standard. 336 * Also time_t is inappropriate for general 337 * UTC times because it may a 32 bit type. */ 338 } 339#endif 340