Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | } |