1/* crypto/asn1/a_gentm.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 59/* GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME */ 60 61#include <stdio.h> 62#include <time.h> 63#include "cryptlib.h" 64#include "o_time.h" 65#include <openssl/asn1.h> 66 67#if 0 68 69int i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **pp) 70 { 71#ifdef CHARSET_EBCDIC 72 /* KLUDGE! We convert to ascii before writing DER */ 73 int len; 74 char tmp[24]; 75 ASN1_STRING tmpstr = *(ASN1_STRING *)a; 76 77 len = tmpstr.length; 78 ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len); 79 tmpstr.data = tmp; 80 81 a = (ASN1_GENERALIZEDTIME *) &tmpstr; 82#endif 83 return(i2d_ASN1_bytes((ASN1_STRING *)a,pp, 84 V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL)); 85 } 86 87 88ASN1_GENERALIZEDTIME *d2i_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME **a, 89 unsigned char **pp, long length) 90 { 91 ASN1_GENERALIZEDTIME *ret=NULL; 92 93 ret=(ASN1_GENERALIZEDTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length, 94 V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL); 95 if (ret == NULL) 96 { 97 ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ERR_R_NESTED_ASN1_ERROR); 98 return(NULL); 99 } 100#ifdef CHARSET_EBCDIC 101 ascii2ebcdic(ret->data, ret->data, ret->length); 102#endif 103 if (!ASN1_GENERALIZEDTIME_check(ret)) 104 { 105 ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ASN1_R_INVALID_TIME_FORMAT); 106 goto err; 107 } 108 109 return(ret); 110err: 111 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 112 M_ASN1_GENERALIZEDTIME_free(ret); 113 return(NULL); 114 } 115 116#endif 117 118int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d) 119 { 120 static const int min[9]={ 0, 0, 1, 1, 0, 0, 0, 0, 0}; 121 static const int max[9]={99, 99,12,31,23,59,59,12,59}; 122 char *a; 123 int n,i,l,o; 124 125 if (d->type != V_ASN1_GENERALIZEDTIME) return(0); 126 l=d->length; 127 a=(char *)d->data; 128 o=0; 129 /* GENERALIZEDTIME is similar to UTCTIME except the year is 130 * represented as YYYY. This stuff treats everything as a two digit 131 * field so make first two fields 00 to 99 132 */ 133 if (l < 13) goto err; 134 for (i=0; i<7; i++) 135 { 136 if ((i == 6) && ((a[o] == 'Z') || 137 (a[o] == '+') || (a[o] == '-'))) 138 { i++; break; } 139 if ((a[o] < '0') || (a[o] > '9')) goto err; 140 n= a[o]-'0'; 141 if (++o > l) goto err; 142 143 if ((a[o] < '0') || (a[o] > '9')) goto err; 144 n=(n*10)+ a[o]-'0'; 145 if (++o > l) goto err; 146 147 if ((n < min[i]) || (n > max[i])) goto err; 148 } 149 /* Optional fractional seconds: decimal point followed by one 150 * or more digits. 151 */ 152 if (a[o] == '.') 153 { 154 if (++o > l) goto err; 155 i = o; 156 while ((a[o] >= '0') && (a[o] <= '9') && (o <= l)) 157 o++; 158 /* Must have at least one digit after decimal point */ 159 if (i == o) goto err; 160 } 161 162 if (a[o] == 'Z') 163 o++; 164 else if ((a[o] == '+') || (a[o] == '-')) 165 { 166 o++; 167 if (o+4 > l) goto err; 168 for (i=7; i<9; i++) 169 { 170 if ((a[o] < '0') || (a[o] > '9')) goto err; 171 n= a[o]-'0'; 172 o++; 173 if ((a[o] < '0') || (a[o] > '9')) goto err; 174 n=(n*10)+ a[o]-'0'; 175 if ((n < min[i]) || (n > max[i])) goto err; 176 o++; 177 } 178 } 179 else 180 { 181 /* Missing time zone information. */ 182 goto err; 183 } 184 return(o == l); 185err: 186 return(0); 187 } 188 189int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str) 190 { 191 ASN1_GENERALIZEDTIME t; 192 193 t.type=V_ASN1_GENERALIZEDTIME; 194 t.length=strlen(str); 195 t.data=(unsigned char *)str; 196 if (ASN1_GENERALIZEDTIME_check(&t)) 197 { 198 if (s != NULL) 199 { 200 if (!ASN1_STRING_set((ASN1_STRING *)s, 201 (unsigned char *)str,t.length)) 202 return 0; 203 s->type=V_ASN1_GENERALIZEDTIME; 204 } 205 return(1); 206 } 207 else 208 return(0); 209 } 210 211ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s, 212 time_t t) 213 { 214 return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0); 215 } 216 217ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, 218 time_t t, int offset_day, long offset_sec) 219 { 220 char *p; 221 struct tm *ts; 222 struct tm data; 223 size_t len = 20; 224 225 if (s == NULL) 226 s=M_ASN1_GENERALIZEDTIME_new(); 227 if (s == NULL) 228 return(NULL); 229 230 ts=OPENSSL_gmtime(&t, &data); 231 if (ts == NULL) 232 return(NULL); 233 234 if (offset_day || offset_sec) 235 { 236 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 237 return NULL; 238 } 239 240 p=(char *)s->data; 241 if ((p == NULL) || ((size_t)s->length < len)) 242 { 243 p=OPENSSL_malloc(len); 244 if (p == NULL) 245 { 246 ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ, 247 ERR_R_MALLOC_FAILURE); 248 return(NULL); 249 } 250 if (s->data != NULL) 251 OPENSSL_free(s->data); 252 s->data=(unsigned char *)p; 253 } 254 255 BIO_snprintf(p,len,"%04d%02d%02d%02d%02d%02dZ",ts->tm_year + 1900, 256 ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec); 257 s->length=strlen(p); 258 s->type=V_ASN1_GENERALIZEDTIME; 259#ifdef CHARSET_EBCDIC_not 260 ebcdic2ascii(s->data, s->data, s->length); 261#endif 262 return(s); 263 } 264