release/src/router/openssl/crypto/asn1/a_gentm.c

   1 /* crypto/asn1/a_gentm.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 /* GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME */
  60
  61 #include <stdio.h>
  62 #include <time.h>
  63 #include "cryptlib.h"
  64 #include "o_time.h"
  65 #include <openssl/asn1.h>
  66
  67 #if 0
  68
  69 int i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **pp)
  70         {
  71 #ifdef CHARSET_EBCDIC
  72         /* KLUDGE! We convert to ascii before writing DER */
  73         int len;
  74         char tmp[24];
  75         ASN1_STRING tmpstr = *(ASN1_STRING *)a;
  76
  77         len = tmpstr.length;
  78         ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
  79         tmpstr.data = tmp;
  80
  81         a = (ASN1_GENERALIZEDTIME *) &tmpstr;
  82 #endif
  83         return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
  84                 V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL));
  85         }
  86
  87
  88 ASN1_GENERALIZEDTIME *d2i_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME **a,
  89              unsigned char **pp, long length)
  90         {
  91         ASN1_GENERALIZEDTIME *ret=NULL;
  92
  93         ret=(ASN1_GENERALIZEDTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length,
  94                 V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL);
  95         if (ret == NULL)
  96                 {
  97                 ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ERR_R_NESTED_ASN1_ERROR);
  98                 return(NULL);
  99                 }
 100 #ifdef CHARSET_EBCDIC
 101         ascii2ebcdic(ret->data, ret->data, ret->length);
 102 #endif
 103         if (!ASN1_GENERALIZEDTIME_check(ret))
 104                 {
 105                 ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ASN1_R_INVALID_TIME_FORMAT);
 106                 goto err;
 107                 }
 108
 109         return(ret);
 110 err:
 111         if ((ret != NULL) && ((a == NULL) || (*a != ret)))
 112                 M_ASN1_GENERALIZEDTIME_free(ret);
 113         return(NULL);
 114         }
 115
 116 #endif
 117
 118 int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d)
 119         {
 120         static const int min[9]={ 0, 0, 1, 1, 0, 0, 0, 0, 0};
 121         static const int max[9]={99, 99,12,31,23,59,59,12,59};
 122         char *a;
 123         int n,i,l,o;
 124
 125         if (d->type != V_ASN1_GENERALIZEDTIME) return(0);
 126         l=d->length;
 127         a=(char *)d->data;
 128         o=0;
 129         /* GENERALIZEDTIME is similar to UTCTIME except the year is
 130          * represented as YYYY. This stuff treats everything as a two digit
 131          * field so make first two fields 00 to 99
 132          */
 133         if (l < 13) goto err;
 134         for (i=0; i<7; i++)
 135                 {
 136                 if ((i == 6) && ((a[o] == 'Z') ||
 137                         (a[o] == '+') || (a[o] == '-')))
 138                         { i++; break; }
 139                 if ((a[o] < '0') || (a[o] > '9')) goto err;
 140                 n= a[o]-'0';
 141                 if (++o > l) goto err;
 142
 143                 if ((a[o] < '0') || (a[o] > '9')) goto err;
 144                 n=(n*10)+ a[o]-'0';
 145                 if (++o > l) goto err;
 146
 147                 if ((n < min[i]) || (n > max[i])) goto err;
 148                 }
 149         /* Optional fractional seconds: decimal point followed by one
 150          * or more digits.
 151          */
 152         if (a[o] == '.')
 153                 {
 154                 if (++o > l) goto err;
 155                 i = o;
 156                 while ((a[o] >= '0') && (a[o] <= '9') && (o <= l))
 157                         o++;
 158                 /* Must have at least one digit after decimal point */
 159                 if (i == o) goto err;
 160                 }
 161
 162         if (a[o] == 'Z')
 163                 o++;
 164         else if ((a[o] == '+') || (a[o] == '-'))
 165                 {
 166                 o++;
 167                 if (o+4 > l) goto err;
 168                 for (i=7; i<9; i++)
 169                         {
 170                         if ((a[o] < '0') || (a[o] > '9')) goto err;
 171                         n= a[o]-'0';
 172                         o++;
 173                         if ((a[o] < '0') || (a[o] > '9')) goto err;
 174                         n=(n*10)+ a[o]-'0';
 175                         if ((n < min[i]) || (n > max[i])) goto err;
 176                         o++;
 177                         }
 178                 }
 179         else
 180                 {
 181                 /* Missing time zone information. */
 182                 goto err;
 183                 }
 184         return(o == l);
 185 err:
 186         return(0);
 187         }
 188
 189 int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
 190         {
 191         ASN1_GENERALIZEDTIME t;
 192
 193         t.type=V_ASN1_GENERALIZEDTIME;
 194         t.length=strlen(str);
 195         t.data=(unsigned char *)str;
 196         if (ASN1_GENERALIZEDTIME_check(&t))
 197                 {
 198                 if (s != NULL)
 199                         {
 200                         if (!ASN1_STRING_set((ASN1_STRING *)s,
 201                                 (unsigned char *)str,t.length))
 202                                 return 0;
 203                         s->type=V_ASN1_GENERALIZEDTIME;
 204                         }
 205                 return(1);
 206                 }
 207         else
 208                 return(0);
 209         }
 210
 211 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
 212              time_t t)
 213         {
 214                 return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
 215         }
 216
 217 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
 218              time_t t, int offset_day, long offset_sec)
 219         {
 220         char *p;
 221         struct tm *ts;
 222         struct tm data;
 223         size_t len = 20;
 224
 225         if (s == NULL)
 226                 s=M_ASN1_GENERALIZEDTIME_new();
 227         if (s == NULL)
 228                 return(NULL);
 229
 230         ts=OPENSSL_gmtime(&t, &data);
 231         if (ts == NULL)
 232                 return(NULL);
 233
 234         if (offset_day || offset_sec)
 235                 {
 236                 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
 237                         return NULL;
 238                 }
 239
 240         p=(char *)s->data;
 241         if ((p == NULL) || ((size_t)s->length < len))
 242                 {
 243                 p=OPENSSL_malloc(len);
 244                 if (p == NULL)
 245                         {
 246                         ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ,
 247                                 ERR_R_MALLOC_FAILURE);
 248                         return(NULL);
 249                         }
 250                 if (s->data != NULL)
 251                         OPENSSL_free(s->data);
 252                 s->data=(unsigned char *)p;
 253                 }
 254
 255         BIO_snprintf(p,len,"%04d%02d%02d%02d%02d%02dZ",ts->tm_year + 1900,
 256                      ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);
 257         s->length=strlen(p);
 258         s->type=V_ASN1_GENERALIZEDTIME;
 259 #ifdef CHARSET_EBCDIC_not
 260         ebcdic2ascii(s->data, s->data, s->length);
 261 #endif
 262         return(s);
 263         }