155714Skris/* crypto/asn1/a_utctm.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 8296465Sdelphij * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15296465Sdelphij * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 22296465Sdelphij * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 37296465Sdelphij * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40296465Sdelphij * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 52296465Sdelphij * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include <time.h> 6155714Skris#include "cryptlib.h" 62109998Smarkm#include "o_time.h" 6355714Skris#include <openssl/asn1.h> 6455714Skris 65109998Smarkm#if 0 6655714Skrisint i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp) 67296465Sdelphij{ 68296465Sdelphij# ifndef CHARSET_EBCDIC 69296465Sdelphij return (i2d_ASN1_bytes((ASN1_STRING *)a, pp, 70296465Sdelphij V_ASN1_UTCTIME, V_ASN1_UNIVERSAL)); 71296465Sdelphij# else 72296465Sdelphij /* KLUDGE! We convert to ascii before writing DER */ 73296465Sdelphij int len; 74296465Sdelphij char tmp[24]; 75296465Sdelphij ASN1_STRING x = *(ASN1_STRING *)a; 7655714Skris 77296465Sdelphij len = x.length; 78296465Sdelphij ebcdic2ascii(tmp, x.data, (len >= sizeof tmp) ? sizeof tmp : len); 79296465Sdelphij x.data = tmp; 80296465Sdelphij return i2d_ASN1_bytes(&x, pp, V_ASN1_UTCTIME, V_ASN1_UNIVERSAL); 81296465Sdelphij# endif 82296465Sdelphij} 8355714Skris 8455714SkrisASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp, 85296465Sdelphij long length) 86296465Sdelphij{ 87296465Sdelphij ASN1_UTCTIME *ret = NULL; 8855714Skris 89296465Sdelphij ret = (ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a, pp, length, 90296465Sdelphij V_ASN1_UTCTIME, V_ASN1_UNIVERSAL); 91296465Sdelphij if (ret == NULL) { 92296465Sdelphij ASN1err(ASN1_F_D2I_ASN1_UTCTIME, ERR_R_NESTED_ASN1_ERROR); 93296465Sdelphij return (NULL); 94296465Sdelphij } 95296465Sdelphij# ifdef CHARSET_EBCDIC 96296465Sdelphij ascii2ebcdic(ret->data, ret->data, ret->length); 97296465Sdelphij# endif 98296465Sdelphij if (!ASN1_UTCTIME_check(ret)) { 99296465Sdelphij ASN1err(ASN1_F_D2I_ASN1_UTCTIME, ASN1_R_INVALID_TIME_FORMAT); 100296465Sdelphij goto err; 101296465Sdelphij } 10255714Skris 103296465Sdelphij return (ret); 104296465Sdelphij err: 105296465Sdelphij if ((ret != NULL) && ((a == NULL) || (*a != ret))) 106296465Sdelphij M_ASN1_UTCTIME_free(ret); 107296465Sdelphij return (NULL); 108296465Sdelphij} 10955714Skris 110109998Smarkm#endif 111109998Smarkm 11255714Skrisint ASN1_UTCTIME_check(ASN1_UTCTIME *d) 113296465Sdelphij{ 114296465Sdelphij static int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; 115296465Sdelphij static int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 }; 116296465Sdelphij char *a; 117296465Sdelphij int n, i, l, o; 11855714Skris 119296465Sdelphij if (d->type != V_ASN1_UTCTIME) 120296465Sdelphij return (0); 121296465Sdelphij l = d->length; 122296465Sdelphij a = (char *)d->data; 123296465Sdelphij o = 0; 12455714Skris 125296465Sdelphij if (l < 11) 126296465Sdelphij goto err; 127296465Sdelphij for (i = 0; i < 6; i++) { 128296465Sdelphij if ((i == 5) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) { 129296465Sdelphij i++; 130296465Sdelphij break; 131296465Sdelphij } 132296465Sdelphij if ((a[o] < '0') || (a[o] > '9')) 133296465Sdelphij goto err; 134296465Sdelphij n = a[o] - '0'; 135296465Sdelphij if (++o > l) 136296465Sdelphij goto err; 13755714Skris 138296465Sdelphij if ((a[o] < '0') || (a[o] > '9')) 139296465Sdelphij goto err; 140296465Sdelphij n = (n * 10) + a[o] - '0'; 141296465Sdelphij if (++o > l) 142296465Sdelphij goto err; 14355714Skris 144296465Sdelphij if ((n < min[i]) || (n > max[i])) 145296465Sdelphij goto err; 146296465Sdelphij } 147296465Sdelphij if (a[o] == 'Z') 148296465Sdelphij o++; 149296465Sdelphij else if ((a[o] == '+') || (a[o] == '-')) { 150296465Sdelphij o++; 151296465Sdelphij if (o + 4 > l) 152296465Sdelphij goto err; 153296465Sdelphij for (i = 6; i < 8; i++) { 154296465Sdelphij if ((a[o] < '0') || (a[o] > '9')) 155296465Sdelphij goto err; 156296465Sdelphij n = a[o] - '0'; 157296465Sdelphij o++; 158296465Sdelphij if ((a[o] < '0') || (a[o] > '9')) 159296465Sdelphij goto err; 160296465Sdelphij n = (n * 10) + a[o] - '0'; 161296465Sdelphij if ((n < min[i]) || (n > max[i])) 162296465Sdelphij goto err; 163296465Sdelphij o++; 164296465Sdelphij } 165296465Sdelphij } 166296465Sdelphij return (o == l); 167296465Sdelphij err: 168296465Sdelphij return (0); 169296465Sdelphij} 17055714Skris 171160814Ssimonint ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str) 172296465Sdelphij{ 173296465Sdelphij ASN1_UTCTIME t; 17455714Skris 175296465Sdelphij t.type = V_ASN1_UTCTIME; 176296465Sdelphij t.length = strlen(str); 177296465Sdelphij t.data = (unsigned char *)str; 178296465Sdelphij if (ASN1_UTCTIME_check(&t)) { 179296465Sdelphij if (s != NULL) { 180296465Sdelphij if (!ASN1_STRING_set((ASN1_STRING *)s, 181296465Sdelphij (unsigned char *)str, t.length)) 182296465Sdelphij return 0; 183296465Sdelphij s->type = V_ASN1_UTCTIME; 184296465Sdelphij } 185296465Sdelphij return (1); 186296465Sdelphij } else 187296465Sdelphij return (0); 188296465Sdelphij} 18955714Skris 19055714SkrisASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t) 191296465Sdelphij{ 192296465Sdelphij char *p; 193296465Sdelphij struct tm *ts; 194296465Sdelphij struct tm data; 195296465Sdelphij size_t len = 20; 19655714Skris 197296465Sdelphij if (s == NULL) 198296465Sdelphij s = M_ASN1_UTCTIME_new(); 199296465Sdelphij if (s == NULL) 200296465Sdelphij return (NULL); 20155714Skris 202296465Sdelphij ts = OPENSSL_gmtime(&t, &data); 203296465Sdelphij if (ts == NULL) 204296465Sdelphij return (NULL); 20555714Skris 206296465Sdelphij p = (char *)s->data; 207296465Sdelphij if ((p == NULL) || ((size_t)s->length < len)) { 208296465Sdelphij p = OPENSSL_malloc(len); 209296465Sdelphij if (p == NULL) { 210296465Sdelphij ASN1err(ASN1_F_ASN1_UTCTIME_SET, ERR_R_MALLOC_FAILURE); 211296465Sdelphij return (NULL); 212296465Sdelphij } 213296465Sdelphij if (s->data != NULL) 214296465Sdelphij OPENSSL_free(s->data); 215296465Sdelphij s->data = (unsigned char *)p; 216296465Sdelphij } 21755714Skris 218296465Sdelphij BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100, 219296465Sdelphij ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min, 220296465Sdelphij ts->tm_sec); 221296465Sdelphij s->length = strlen(p); 222296465Sdelphij s->type = V_ASN1_UTCTIME; 22355714Skris#ifdef CHARSET_EBCDIC_not 224296465Sdelphij ebcdic2ascii(s->data, s->data, s->length); 22555714Skris#endif 226296465Sdelphij return (s); 227296465Sdelphij} 22868651Skris 22968651Skrisint ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t) 230296465Sdelphij{ 231296465Sdelphij struct tm *tm; 232296465Sdelphij struct tm data; 233296465Sdelphij int offset; 234296465Sdelphij int year; 23568651Skris 23668651Skris#define g2(p) (((p)[0]-'0')*10+(p)[1]-'0') 23768651Skris 238296465Sdelphij if (s->data[12] == 'Z') 239296465Sdelphij offset = 0; 240296465Sdelphij else { 241296465Sdelphij offset = g2(s->data + 13) * 60 + g2(s->data + 15); 242296465Sdelphij if (s->data[12] == '-') 243296465Sdelphij offset = -offset; 244296465Sdelphij } 24568651Skris 246296465Sdelphij t -= offset * 60; /* FIXME: may overflow in extreme cases */ 24768651Skris 248296465Sdelphij tm = OPENSSL_gmtime(&t, &data); 249296465Sdelphij 25068651Skris#define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1 251296465Sdelphij year = g2(s->data); 252296465Sdelphij if (year < 50) 253296465Sdelphij year += 100; 254296465Sdelphij return_cmp(year, tm->tm_year); 255296465Sdelphij return_cmp(g2(s->data + 2) - 1, tm->tm_mon); 256296465Sdelphij return_cmp(g2(s->data + 4), tm->tm_mday); 257296465Sdelphij return_cmp(g2(s->data + 6), tm->tm_hour); 258296465Sdelphij return_cmp(g2(s->data + 8), tm->tm_min); 259296465Sdelphij return_cmp(g2(s->data + 10), tm->tm_sec); 26068651Skris#undef g2 26168651Skris#undef return_cmp 26268651Skris 263296465Sdelphij return 0; 264296465Sdelphij} 26568651Skris 26668651Skris#if 0 26768651Skristime_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s) 268296465Sdelphij{ 269296465Sdelphij struct tm tm; 270296465Sdelphij int offset; 27168651Skris 272296465Sdelphij memset(&tm, '\0', sizeof tm); 27368651Skris 274296465Sdelphij# define g2(p) (((p)[0]-'0')*10+(p)[1]-'0') 275296465Sdelphij tm.tm_year = g2(s->data); 276296465Sdelphij if (tm.tm_year < 50) 277296465Sdelphij tm.tm_year += 100; 278296465Sdelphij tm.tm_mon = g2(s->data + 2) - 1; 279296465Sdelphij tm.tm_mday = g2(s->data + 4); 280296465Sdelphij tm.tm_hour = g2(s->data + 6); 281296465Sdelphij tm.tm_min = g2(s->data + 8); 282296465Sdelphij tm.tm_sec = g2(s->data + 10); 283296465Sdelphij if (s->data[12] == 'Z') 284296465Sdelphij offset = 0; 285296465Sdelphij else { 286296465Sdelphij offset = g2(s->data + 13) * 60 + g2(s->data + 15); 287296465Sdelphij if (s->data[12] == '-') 288296465Sdelphij offset = -offset; 289296465Sdelphij } 290296465Sdelphij# undef g2 29168651Skris 292296465Sdelphij /* 293296465Sdelphij * FIXME: mktime assumes the current timezone 294296465Sdelphij * instead of UTC, and unless we rewrite OpenSSL 295296465Sdelphij * in Lisp we cannot locally change the timezone 296296465Sdelphij * without possibly interfering with other parts 297296465Sdelphij * of the program. timegm, which uses UTC, is 298296465Sdelphij * non-standard. 299296465Sdelphij * Also time_t is inappropriate for general 300296465Sdelphij * UTC times because it may a 32 bit type. 301296465Sdelphij */ 302296465Sdelphij return mktime(&tm) - offset * 60; 303296465Sdelphij} 30468651Skris#endif 305