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. 8280304Sjkim * 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). 15280304Sjkim * 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. 22280304Sjkim * 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 :-). 37280304Sjkim * 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)" 40280304Sjkim * 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. 52280304Sjkim * 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) 67280304Sjkim{ 68280304Sjkim# ifndef CHARSET_EBCDIC 69280304Sjkim return (i2d_ASN1_bytes((ASN1_STRING *)a, pp, 70280304Sjkim V_ASN1_UTCTIME, V_ASN1_UNIVERSAL)); 71280304Sjkim# else 72280304Sjkim /* KLUDGE! We convert to ascii before writing DER */ 73280304Sjkim int len; 74280304Sjkim char tmp[24]; 75280304Sjkim ASN1_STRING x = *(ASN1_STRING *)a; 7655714Skris 77280304Sjkim len = x.length; 78280304Sjkim ebcdic2ascii(tmp, x.data, (len >= sizeof tmp) ? sizeof tmp : len); 79280304Sjkim x.data = tmp; 80280304Sjkim return i2d_ASN1_bytes(&x, pp, V_ASN1_UTCTIME, V_ASN1_UNIVERSAL); 81280304Sjkim# endif 82280304Sjkim} 8355714Skris 8455714SkrisASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp, 85280304Sjkim long length) 86280304Sjkim{ 87280304Sjkim ASN1_UTCTIME *ret = NULL; 8855714Skris 89280304Sjkim ret = (ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a, pp, length, 90280304Sjkim V_ASN1_UTCTIME, V_ASN1_UNIVERSAL); 91280304Sjkim if (ret == NULL) { 92280304Sjkim ASN1err(ASN1_F_D2I_ASN1_UTCTIME, ERR_R_NESTED_ASN1_ERROR); 93280304Sjkim return (NULL); 94280304Sjkim } 95280304Sjkim# ifdef CHARSET_EBCDIC 96280304Sjkim ascii2ebcdic(ret->data, ret->data, ret->length); 97280304Sjkim# endif 98280304Sjkim if (!ASN1_UTCTIME_check(ret)) { 99280304Sjkim ASN1err(ASN1_F_D2I_ASN1_UTCTIME, ASN1_R_INVALID_TIME_FORMAT); 100280304Sjkim goto err; 101280304Sjkim } 10255714Skris 103280304Sjkim return (ret); 104280304Sjkim err: 105280304Sjkim if ((ret != NULL) && ((a == NULL) || (*a != ret))) 106280304Sjkim M_ASN1_UTCTIME_free(ret); 107280304Sjkim return (NULL); 108280304Sjkim} 10955714Skris 110109998Smarkm#endif 111109998Smarkm 11255714Skrisint ASN1_UTCTIME_check(ASN1_UTCTIME *d) 113280304Sjkim{ 114280304Sjkim static const int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; 115280304Sjkim static const int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 }; 116280304Sjkim char *a; 117280304Sjkim int n, i, l, o; 11855714Skris 119280304Sjkim if (d->type != V_ASN1_UTCTIME) 120280304Sjkim return (0); 121280304Sjkim l = d->length; 122280304Sjkim a = (char *)d->data; 123280304Sjkim o = 0; 12455714Skris 125280304Sjkim if (l < 11) 126280304Sjkim goto err; 127280304Sjkim for (i = 0; i < 6; i++) { 128280304Sjkim if ((i == 5) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) { 129280304Sjkim i++; 130280304Sjkim break; 131280304Sjkim } 132280304Sjkim if ((a[o] < '0') || (a[o] > '9')) 133280304Sjkim goto err; 134280304Sjkim n = a[o] - '0'; 135280304Sjkim if (++o > l) 136280304Sjkim goto err; 13755714Skris 138280304Sjkim if ((a[o] < '0') || (a[o] > '9')) 139280304Sjkim goto err; 140280304Sjkim n = (n * 10) + a[o] - '0'; 141280304Sjkim if (++o > l) 142280304Sjkim goto err; 14355714Skris 144280304Sjkim if ((n < min[i]) || (n > max[i])) 145280304Sjkim goto err; 146280304Sjkim } 147280304Sjkim if (a[o] == 'Z') 148280304Sjkim o++; 149280304Sjkim else if ((a[o] == '+') || (a[o] == '-')) { 150280304Sjkim o++; 151280304Sjkim if (o + 4 > l) 152280304Sjkim goto err; 153280304Sjkim for (i = 6; i < 8; i++) { 154280304Sjkim if ((a[o] < '0') || (a[o] > '9')) 155280304Sjkim goto err; 156280304Sjkim n = a[o] - '0'; 157280304Sjkim o++; 158280304Sjkim if ((a[o] < '0') || (a[o] > '9')) 159280304Sjkim goto err; 160280304Sjkim n = (n * 10) + a[o] - '0'; 161280304Sjkim if ((n < min[i]) || (n > max[i])) 162280304Sjkim goto err; 163280304Sjkim o++; 164280304Sjkim } 165280304Sjkim } 166280304Sjkim return (o == l); 167280304Sjkim err: 168280304Sjkim return (0); 169280304Sjkim} 17055714Skris 171160814Ssimonint ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str) 172280304Sjkim{ 173280304Sjkim ASN1_UTCTIME t; 17455714Skris 175280304Sjkim t.type = V_ASN1_UTCTIME; 176280304Sjkim t.length = strlen(str); 177280304Sjkim t.data = (unsigned char *)str; 178280304Sjkim if (ASN1_UTCTIME_check(&t)) { 179280304Sjkim if (s != NULL) { 180280304Sjkim if (!ASN1_STRING_set((ASN1_STRING *)s, 181280304Sjkim (unsigned char *)str, t.length)) 182280304Sjkim return 0; 183280304Sjkim s->type = V_ASN1_UTCTIME; 184280304Sjkim } 185280304Sjkim return (1); 186280304Sjkim } else 187280304Sjkim return (0); 188280304Sjkim} 18955714Skris 19055714SkrisASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t) 191280304Sjkim{ 192280304Sjkim return ASN1_UTCTIME_adj(s, t, 0, 0); 193280304Sjkim} 194238405Sjkim 195238405SjkimASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t, 196280304Sjkim int offset_day, long offset_sec) 197280304Sjkim{ 198280304Sjkim char *p; 199280304Sjkim struct tm *ts; 200280304Sjkim struct tm data; 201280304Sjkim size_t len = 20; 202280304Sjkim int free_s = 0; 20355714Skris 204280304Sjkim if (s == NULL) { 205280304Sjkim free_s = 1; 206280304Sjkim s = M_ASN1_UTCTIME_new(); 207280304Sjkim } 208280304Sjkim if (s == NULL) 209280304Sjkim goto err; 21055714Skris 211280304Sjkim ts = OPENSSL_gmtime(&t, &data); 212280304Sjkim if (ts == NULL) 213280304Sjkim goto err; 214269686Sjkim 215280304Sjkim if (offset_day || offset_sec) { 216280304Sjkim if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 217280304Sjkim goto err; 218280304Sjkim } 21955714Skris 220280304Sjkim if ((ts->tm_year < 50) || (ts->tm_year >= 150)) 221280304Sjkim goto err; 222238405Sjkim 223280304Sjkim p = (char *)s->data; 224280304Sjkim if ((p == NULL) || ((size_t)s->length < len)) { 225280304Sjkim p = OPENSSL_malloc(len); 226280304Sjkim if (p == NULL) { 227280304Sjkim ASN1err(ASN1_F_ASN1_UTCTIME_ADJ, ERR_R_MALLOC_FAILURE); 228280304Sjkim goto err; 229280304Sjkim } 230280304Sjkim if (s->data != NULL) 231280304Sjkim OPENSSL_free(s->data); 232280304Sjkim s->data = (unsigned char *)p; 233280304Sjkim } 234238405Sjkim 235280304Sjkim BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100, 236280304Sjkim ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min, 237280304Sjkim ts->tm_sec); 238280304Sjkim s->length = strlen(p); 239280304Sjkim s->type = V_ASN1_UTCTIME; 24055714Skris#ifdef CHARSET_EBCDIC_not 241280304Sjkim ebcdic2ascii(s->data, s->data, s->length); 24255714Skris#endif 243280304Sjkim return (s); 244280304Sjkim err: 245280304Sjkim if (free_s && s) 246280304Sjkim M_ASN1_UTCTIME_free(s); 247280304Sjkim return NULL; 248280304Sjkim} 24968651Skris 25068651Skrisint ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t) 251280304Sjkim{ 252280304Sjkim struct tm *tm; 253280304Sjkim struct tm data; 254280304Sjkim int offset; 255280304Sjkim int year; 25668651Skris 25768651Skris#define g2(p) (((p)[0]-'0')*10+(p)[1]-'0') 25868651Skris 259280304Sjkim if (s->data[12] == 'Z') 260280304Sjkim offset = 0; 261280304Sjkim else { 262280304Sjkim offset = g2(s->data + 13) * 60 + g2(s->data + 15); 263280304Sjkim if (s->data[12] == '-') 264280304Sjkim offset = -offset; 265280304Sjkim } 26668651Skris 267280304Sjkim t -= offset * 60; /* FIXME: may overflow in extreme cases */ 26868651Skris 269280304Sjkim tm = OPENSSL_gmtime(&t, &data); 270280304Sjkim /* 271280304Sjkim * NB: -1, 0, 1 already valid return values so use -2 to indicate error. 272280304Sjkim */ 273280304Sjkim if (tm == NULL) 274280304Sjkim return -2; 275280304Sjkim 27668651Skris#define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1 277280304Sjkim year = g2(s->data); 278280304Sjkim if (year < 50) 279280304Sjkim year += 100; 280280304Sjkim return_cmp(year, tm->tm_year); 281280304Sjkim return_cmp(g2(s->data + 2) - 1, tm->tm_mon); 282280304Sjkim return_cmp(g2(s->data + 4), tm->tm_mday); 283280304Sjkim return_cmp(g2(s->data + 6), tm->tm_hour); 284280304Sjkim return_cmp(g2(s->data + 8), tm->tm_min); 285280304Sjkim return_cmp(g2(s->data + 10), tm->tm_sec); 28668651Skris#undef g2 28768651Skris#undef return_cmp 28868651Skris 289280304Sjkim return 0; 290280304Sjkim} 29168651Skris 29268651Skris#if 0 29368651Skristime_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s) 294280304Sjkim{ 295280304Sjkim struct tm tm; 296280304Sjkim int offset; 29768651Skris 298280304Sjkim memset(&tm, '\0', sizeof tm); 29968651Skris 300280304Sjkim# define g2(p) (((p)[0]-'0')*10+(p)[1]-'0') 301280304Sjkim tm.tm_year = g2(s->data); 302280304Sjkim if (tm.tm_year < 50) 303280304Sjkim tm.tm_year += 100; 304280304Sjkim tm.tm_mon = g2(s->data + 2) - 1; 305280304Sjkim tm.tm_mday = g2(s->data + 4); 306280304Sjkim tm.tm_hour = g2(s->data + 6); 307280304Sjkim tm.tm_min = g2(s->data + 8); 308280304Sjkim tm.tm_sec = g2(s->data + 10); 309280304Sjkim if (s->data[12] == 'Z') 310280304Sjkim offset = 0; 311280304Sjkim else { 312280304Sjkim offset = g2(s->data + 13) * 60 + g2(s->data + 15); 313280304Sjkim if (s->data[12] == '-') 314280304Sjkim offset = -offset; 315280304Sjkim } 316280304Sjkim# undef g2 31768651Skris 318280304Sjkim /* 319280304Sjkim * FIXME: mktime assumes the current timezone 320280304Sjkim * instead of UTC, and unless we rewrite OpenSSL 321280304Sjkim * in Lisp we cannot locally change the timezone 322280304Sjkim * without possibly interfering with other parts 323280304Sjkim * of the program. timegm, which uses UTC, is 324280304Sjkim * non-standard. 325280304Sjkim * Also time_t is inappropriate for general 326280304Sjkim * UTC times because it may a 32 bit type. 327280304Sjkim */ 328280304Sjkim return mktime(&tm) - offset * 60; 329280304Sjkim} 33068651Skris#endif 331