155714Skris/* crypto/asn1/a_gentm.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. 8280297Sjkim * 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). 15280297Sjkim * 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. 22280297Sjkim * 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 :-). 37280297Sjkim * 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)" 40280297Sjkim * 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. 52280297Sjkim * 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 59280297Sjkim/* 60280297Sjkim * GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME 61280297Sjkim */ 6255714Skris 6355714Skris#include <stdio.h> 6455714Skris#include <time.h> 6555714Skris#include "cryptlib.h" 66109998Smarkm#include "o_time.h" 6755714Skris#include <openssl/asn1.h> 68290207Sjkim#include "asn1_locl.h" 6955714Skris 70109998Smarkm#if 0 7159191Skris 7255714Skrisint i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **pp) 73280297Sjkim{ 74280297Sjkim# ifdef CHARSET_EBCDIC 75280297Sjkim /* KLUDGE! We convert to ascii before writing DER */ 76280297Sjkim int len; 77280297Sjkim char tmp[24]; 78280297Sjkim ASN1_STRING tmpstr = *(ASN1_STRING *)a; 7955714Skris 80280297Sjkim len = tmpstr.length; 81331638Sjkim ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof(tmp)) ? sizeof(tmp) : len); 82280297Sjkim tmpstr.data = tmp; 8355714Skris 84280297Sjkim a = (ASN1_GENERALIZEDTIME *)&tmpstr; 85280297Sjkim# endif 86280297Sjkim return (i2d_ASN1_bytes((ASN1_STRING *)a, pp, 87280297Sjkim V_ASN1_GENERALIZEDTIME, V_ASN1_UNIVERSAL)); 88280297Sjkim} 8955714Skris 9055714SkrisASN1_GENERALIZEDTIME *d2i_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME **a, 91280297Sjkim unsigned char **pp, 92280297Sjkim long length) 93280297Sjkim{ 94280297Sjkim ASN1_GENERALIZEDTIME *ret = NULL; 9555714Skris 96280297Sjkim ret = 97280297Sjkim (ASN1_GENERALIZEDTIME *)d2i_ASN1_bytes((ASN1_STRING **)a, pp, length, 98280297Sjkim V_ASN1_GENERALIZEDTIME, 99280297Sjkim V_ASN1_UNIVERSAL); 100280297Sjkim if (ret == NULL) { 101280297Sjkim ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME, ERR_R_NESTED_ASN1_ERROR); 102280297Sjkim return (NULL); 103280297Sjkim } 104280297Sjkim# ifdef CHARSET_EBCDIC 105280297Sjkim ascii2ebcdic(ret->data, ret->data, ret->length); 106280297Sjkim# endif 107280297Sjkim if (!ASN1_GENERALIZEDTIME_check(ret)) { 108280297Sjkim ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME, ASN1_R_INVALID_TIME_FORMAT); 109280297Sjkim goto err; 110280297Sjkim } 11155714Skris 112280297Sjkim return (ret); 113280297Sjkim err: 114280297Sjkim if ((ret != NULL) && ((a == NULL) || (*a != ret))) 115280297Sjkim M_ASN1_GENERALIZEDTIME_free(ret); 116280297Sjkim return (NULL); 117280297Sjkim} 11855714Skris 119109998Smarkm#endif 120109998Smarkm 121290207Sjkimint asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d) 122280297Sjkim{ 123280297Sjkim static const int min[9] = { 0, 0, 1, 1, 0, 0, 0, 0, 0 }; 124280297Sjkim static const int max[9] = { 99, 99, 12, 31, 23, 59, 59, 12, 59 }; 125280297Sjkim char *a; 126280297Sjkim int n, i, l, o; 12755714Skris 128280297Sjkim if (d->type != V_ASN1_GENERALIZEDTIME) 129280297Sjkim return (0); 130280297Sjkim l = d->length; 131280297Sjkim a = (char *)d->data; 132280297Sjkim o = 0; 133280297Sjkim /* 134280297Sjkim * GENERALIZEDTIME is similar to UTCTIME except the year is represented 135280297Sjkim * as YYYY. This stuff treats everything as a two digit field so make 136280297Sjkim * first two fields 00 to 99 137280297Sjkim */ 138280297Sjkim if (l < 13) 139280297Sjkim goto err; 140280297Sjkim for (i = 0; i < 7; i++) { 141280297Sjkim if ((i == 6) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) { 142280297Sjkim i++; 143290207Sjkim if (tm) 144290207Sjkim tm->tm_sec = 0; 145280297Sjkim break; 146280297Sjkim } 147280297Sjkim if ((a[o] < '0') || (a[o] > '9')) 148280297Sjkim goto err; 149280297Sjkim n = a[o] - '0'; 150280297Sjkim if (++o > l) 151280297Sjkim goto err; 15255714Skris 153280297Sjkim if ((a[o] < '0') || (a[o] > '9')) 154280297Sjkim goto err; 155280297Sjkim n = (n * 10) + a[o] - '0'; 156280297Sjkim if (++o > l) 157280297Sjkim goto err; 15855714Skris 159280297Sjkim if ((n < min[i]) || (n > max[i])) 160280297Sjkim goto err; 161290207Sjkim if (tm) { 162290207Sjkim switch (i) { 163290207Sjkim case 0: 164290207Sjkim tm->tm_year = n * 100 - 1900; 165290207Sjkim break; 166290207Sjkim case 1: 167290207Sjkim tm->tm_year += n; 168290207Sjkim break; 169290207Sjkim case 2: 170290207Sjkim tm->tm_mon = n - 1; 171290207Sjkim break; 172290207Sjkim case 3: 173290207Sjkim tm->tm_mday = n; 174290207Sjkim break; 175290207Sjkim case 4: 176290207Sjkim tm->tm_hour = n; 177290207Sjkim break; 178290207Sjkim case 5: 179290207Sjkim tm->tm_min = n; 180290207Sjkim break; 181290207Sjkim case 6: 182290207Sjkim tm->tm_sec = n; 183290207Sjkim break; 184290207Sjkim } 185290207Sjkim } 186280297Sjkim } 187280297Sjkim /* 188280297Sjkim * Optional fractional seconds: decimal point followed by one or more 189280297Sjkim * digits. 190280297Sjkim */ 191280297Sjkim if (a[o] == '.') { 192280297Sjkim if (++o > l) 193280297Sjkim goto err; 194280297Sjkim i = o; 195280297Sjkim while ((a[o] >= '0') && (a[o] <= '9') && (o <= l)) 196280297Sjkim o++; 197280297Sjkim /* Must have at least one digit after decimal point */ 198280297Sjkim if (i == o) 199280297Sjkim goto err; 200280297Sjkim } 201109998Smarkm 202280297Sjkim if (a[o] == 'Z') 203280297Sjkim o++; 204280297Sjkim else if ((a[o] == '+') || (a[o] == '-')) { 205325335Sjkim int offsign = a[o] == '-' ? 1 : -1, offset = 0; 206280297Sjkim o++; 207280297Sjkim if (o + 4 > l) 208280297Sjkim goto err; 209280297Sjkim for (i = 7; i < 9; i++) { 210280297Sjkim if ((a[o] < '0') || (a[o] > '9')) 211280297Sjkim goto err; 212280297Sjkim n = a[o] - '0'; 213280297Sjkim o++; 214280297Sjkim if ((a[o] < '0') || (a[o] > '9')) 215280297Sjkim goto err; 216280297Sjkim n = (n * 10) + a[o] - '0'; 217280297Sjkim if ((n < min[i]) || (n > max[i])) 218280297Sjkim goto err; 219290207Sjkim if (tm) { 220290207Sjkim if (i == 7) 221290207Sjkim offset = n * 3600; 222290207Sjkim else if (i == 8) 223290207Sjkim offset += n * 60; 224290207Sjkim } 225280297Sjkim o++; 226280297Sjkim } 227290207Sjkim if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign)) 228290207Sjkim return 0; 229290207Sjkim } else if (a[o]) { 230280297Sjkim /* Missing time zone information. */ 231280297Sjkim goto err; 232280297Sjkim } 233280297Sjkim return (o == l); 234280297Sjkim err: 235280297Sjkim return (0); 236280297Sjkim} 23755714Skris 238290207Sjkimint ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d) 239290207Sjkim{ 240290207Sjkim return asn1_generalizedtime_to_tm(NULL, d); 241290207Sjkim} 242290207Sjkim 243160814Ssimonint ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str) 244280297Sjkim{ 245280297Sjkim ASN1_GENERALIZEDTIME t; 24655714Skris 247280297Sjkim t.type = V_ASN1_GENERALIZEDTIME; 248280297Sjkim t.length = strlen(str); 249280297Sjkim t.data = (unsigned char *)str; 250280297Sjkim if (ASN1_GENERALIZEDTIME_check(&t)) { 251280297Sjkim if (s != NULL) { 252280297Sjkim if (!ASN1_STRING_set((ASN1_STRING *)s, 253280297Sjkim (unsigned char *)str, t.length)) 254280297Sjkim return 0; 255280297Sjkim s->type = V_ASN1_GENERALIZEDTIME; 256280297Sjkim } 257280297Sjkim return (1); 258280297Sjkim } else 259280297Sjkim return (0); 260280297Sjkim} 26155714Skris 26255714SkrisASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s, 263280297Sjkim time_t t) 264280297Sjkim{ 265280297Sjkim return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0); 266280297Sjkim} 267238405Sjkim 268238405SjkimASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, 269280297Sjkim time_t t, int offset_day, 270280297Sjkim long offset_sec) 271280297Sjkim{ 272280297Sjkim char *p; 273280297Sjkim struct tm *ts; 274280297Sjkim struct tm data; 275280297Sjkim size_t len = 20; 27655714Skris 277280297Sjkim if (s == NULL) 278280297Sjkim s = M_ASN1_GENERALIZEDTIME_new(); 279280297Sjkim if (s == NULL) 280280297Sjkim return (NULL); 28155714Skris 282280297Sjkim ts = OPENSSL_gmtime(&t, &data); 283280297Sjkim if (ts == NULL) 284280297Sjkim return (NULL); 285109998Smarkm 286280297Sjkim if (offset_day || offset_sec) { 287280297Sjkim if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 288280297Sjkim return NULL; 289280297Sjkim } 290238405Sjkim 291280297Sjkim p = (char *)s->data; 292280297Sjkim if ((p == NULL) || ((size_t)s->length < len)) { 293280297Sjkim p = OPENSSL_malloc(len); 294280297Sjkim if (p == NULL) { 295280297Sjkim ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ, ERR_R_MALLOC_FAILURE); 296280297Sjkim return (NULL); 297280297Sjkim } 298280297Sjkim if (s->data != NULL) 299280297Sjkim OPENSSL_free(s->data); 300280297Sjkim s->data = (unsigned char *)p; 301280297Sjkim } 30255714Skris 303280297Sjkim BIO_snprintf(p, len, "%04d%02d%02d%02d%02d%02dZ", ts->tm_year + 1900, 304280297Sjkim ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min, 305280297Sjkim ts->tm_sec); 306280297Sjkim s->length = strlen(p); 307280297Sjkim s->type = V_ASN1_GENERALIZEDTIME; 30855714Skris#ifdef CHARSET_EBCDIC_not 309280297Sjkim ebcdic2ascii(s->data, s->data, s->length); 31055714Skris#endif 311280297Sjkim return (s); 312280297Sjkim} 313