1 /* crypto/asn1/a_time.c */ 2 /* ==================================================================== 3 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * 3. All advertising materials mentioning features or use of this 18 * software must display the following acknowledgment: 19 * "This product includes software developed by the OpenSSL Project 20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 21 * 22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 23 * endorse or promote products derived from this software without 24 * prior written permission. For written permission, please contact 25 * licensing@OpenSSL.org. 26 * 27 * 5. Products derived from this software may not be called "OpenSSL" 28 * nor may "OpenSSL" appear in their names without prior written 29 * permission of the OpenSSL Project. 30 * 31 * 6. Redistributions of any form whatsoever must retain the following 32 * acknowledgment: 33 * "This product includes software developed by the OpenSSL Project 34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 47 * OF THE POSSIBILITY OF SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This product includes cryptographic software written by Eric Young 51 * (eay@cryptsoft.com). This product includes software written by Tim 52 * Hudson (tjh@cryptsoft.com). 53 * 54 */ 55 56 57 /* This is an implementation of the ASN1 Time structure which is: 58 * Time ::= CHOICE { 59 * utcTime UTCTime, 60 * generalTime GeneralizedTime } 61 * written by Steve Henson. 62 */ 63 64 #include <stdio.h> 65 #include <time.h> 66 #include "cryptlib.h" 67 #include "o_time.h" 68 #include <openssl/asn1t.h> 69 70 IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME) 71 72 IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME) 73 74 #if 0 75 int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp) 76 { 77 #ifdef CHARSET_EBCDIC 78 /* KLUDGE! We convert to ascii before writing DER */ 79 char tmp[24]; 80 ASN1_STRING tmpstr; 81 82 if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) { 83 int len; 84 85 tmpstr = *(ASN1_STRING *)a; 86 len = tmpstr.length; 87 ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len); 88 tmpstr.data = tmp; 89 a = (ASN1_GENERALIZEDTIME *) &tmpstr; 90 } 91 #endif 92 if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) 93 return(i2d_ASN1_bytes((ASN1_STRING *)a,pp, 94 a->type ,V_ASN1_UNIVERSAL)); 95 ASN1err(ASN1_F_I2D_ASN1_TIME,ASN1_R_EXPECTING_A_TIME); 96 return -1; 97 } 98 #endif 99 100 101 ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t) 102 { 103 return ASN1_TIME_adj(s, t, 0, 0); 104 } 105 106 ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t, 107 int offset_day, long offset_sec) 108 { 109 struct tm *ts; 110 struct tm data; 111 112 ts=OPENSSL_gmtime(&t,&data); 113 if (ts == NULL) 114 { 115 ASN1err(ASN1_F_ASN1_TIME_ADJ, ASN1_R_ERROR_GETTING_TIME); 116 return NULL; 117 } 118 if (offset_day || offset_sec) 119 { 120 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 121 return NULL; 122 } 123 if((ts->tm_year >= 50) && (ts->tm_year < 150)) 124 return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec); 125 return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec); 126 } 127 128 int ASN1_TIME_check(ASN1_TIME *t) 129 { 130 if (t->type == V_ASN1_GENERALIZEDTIME) 131 return ASN1_GENERALIZEDTIME_check(t); 132 else if (t->type == V_ASN1_UTCTIME) 133 return ASN1_UTCTIME_check(t); 134 return 0; 135 } 136 137 /* Convert an ASN1_TIME structure to GeneralizedTime */ 138 ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out) 139 { 140 ASN1_GENERALIZEDTIME *ret; 141 char *str; 142 int newlen; 143 144 if (!ASN1_TIME_check(t)) return NULL; 145 146 if (!out || !*out) 147 { 148 if (!(ret = ASN1_GENERALIZEDTIME_new ())) 149 return NULL; 150 if (out) *out = ret; 151 } 152 else ret = *out; 153 154 /* If already GeneralizedTime just copy across */ 155 if (t->type == V_ASN1_GENERALIZEDTIME) 156 { 157 if(!ASN1_STRING_set(ret, t->data, t->length)) 158 return NULL; 159 return ret; 160 } 161 162 /* grow the string */ 163 if (!ASN1_STRING_set(ret, NULL, t->length + 2)) 164 return NULL; 165 /* ASN1_STRING_set() allocated 'len + 1' bytes. */ 166 newlen = t->length + 2 + 1; 167 str = (char *)ret->data; 168 /* Work out the century and prepend */ 169 if (t->data[0] >= '5') BUF_strlcpy(str, "19", newlen); 170 else BUF_strlcpy(str, "20", newlen); 171 172 BUF_strlcat(str, (char *)t->data, newlen); 173 174 return ret; 175 } 176 177 int ASN1_TIME_set_string(ASN1_TIME *s, const char *str) 178 { 179 ASN1_TIME t; 180 181 t.length = strlen(str); 182 t.data = (unsigned char *)str; 183 t.flags = 0; 184 185 t.type = V_ASN1_UTCTIME; 186 187 if (!ASN1_TIME_check(&t)) 188 { 189 t.type = V_ASN1_GENERALIZEDTIME; 190 if (!ASN1_TIME_check(&t)) 191 return 0; 192 } 193 194 if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t)) 195 return 0; 196 197 return 1; 198 } 199