crypto/asn1/a_type.c

   1 /* crypto/asn1/a_type.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 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include <openssl/asn1_mac.h>
  62
  63 static void ASN1_TYPE_component_free(ASN1_TYPE *a);
  64 int i2d_ASN1_TYPE(ASN1_TYPE *a, unsigned char **pp)
  65         {
  66         int r=0;
  67
  68         if (a == NULL) return(0);
  69
  70         switch (a->type)
  71                 {
  72         case V_ASN1_NULL:
  73                 if (pp != NULL)
  74                         ASN1_put_object(pp,0,0,V_ASN1_NULL,V_ASN1_UNIVERSAL);
  75                 r=2;
  76                 break;
  77         case V_ASN1_INTEGER:
  78         case V_ASN1_NEG_INTEGER:
  79                 r=i2d_ASN1_INTEGER(a->value.integer,pp);
  80                 break;
  81         case V_ASN1_ENUMERATED:
  82         case V_ASN1_NEG_ENUMERATED:
  83                 r=i2d_ASN1_ENUMERATED(a->value.enumerated,pp);
  84                 break;
  85         case V_ASN1_BIT_STRING:
  86                 r=i2d_ASN1_BIT_STRING(a->value.bit_string,pp);
  87                 break;
  88         case V_ASN1_OCTET_STRING:
  89                 r=i2d_ASN1_OCTET_STRING(a->value.octet_string,pp);
  90                 break;
  91         case V_ASN1_OBJECT:
  92                 r=i2d_ASN1_OBJECT(a->value.object,pp);
  93                 break;
  94         case V_ASN1_PRINTABLESTRING:
  95                 r=M_i2d_ASN1_PRINTABLESTRING(a->value.printablestring,pp);
  96                 break;
  97         case V_ASN1_T61STRING:
  98                 r=M_i2d_ASN1_T61STRING(a->value.t61string,pp);
  99                 break;
 100         case V_ASN1_IA5STRING:
 101                 r=M_i2d_ASN1_IA5STRING(a->value.ia5string,pp);
 102                 break;
 103         case V_ASN1_GENERALSTRING:
 104                 r=M_i2d_ASN1_GENERALSTRING(a->value.generalstring,pp);
 105                 break;
 106         case V_ASN1_UNIVERSALSTRING:
 107                 r=M_i2d_ASN1_UNIVERSALSTRING(a->value.universalstring,pp);
 108                 break;
 109         case V_ASN1_UTF8STRING:
 110                 r=M_i2d_ASN1_UTF8STRING(a->value.utf8string,pp);
 111                 break;
 112         case V_ASN1_VISIBLESTRING:
 113                 r=M_i2d_ASN1_VISIBLESTRING(a->value.visiblestring,pp);
 114                 break;
 115         case V_ASN1_BMPSTRING:
 116                 r=M_i2d_ASN1_BMPSTRING(a->value.bmpstring,pp);
 117                 break;
 118         case V_ASN1_UTCTIME:
 119                 r=i2d_ASN1_UTCTIME(a->value.utctime,pp);
 120                 break;
 121         case V_ASN1_GENERALIZEDTIME:
 122                 r=i2d_ASN1_GENERALIZEDTIME(a->value.generalizedtime,pp);
 123                 break;
 124         case V_ASN1_SET:
 125         case V_ASN1_SEQUENCE:
 126         case V_ASN1_OTHER:
 127         default:
 128                 if (a->value.set == NULL)
 129                         r=0;
 130                 else
 131                         {
 132                         r=a->value.set->length;
 133                         if (pp != NULL)
 134                                 {
 135                                 memcpy(*pp,a->value.set->data,r);
 136                                 *pp+=r;
 137                                 }
 138                         }
 139                 break;
 140                 }
 141         return(r);
 142         }
 143
 144 ASN1_TYPE *d2i_ASN1_TYPE(ASN1_TYPE **a, unsigned char **pp, long length)
 145         {
 146         ASN1_TYPE *ret=NULL;
 147         unsigned char *q,*p,*max;
 148         int inf,tag,xclass;
 149         long len;
 150
 151         if ((a == NULL) || ((*a) == NULL))
 152                 {
 153                 if ((ret=ASN1_TYPE_new()) == NULL) goto err;
 154                 }
 155         else
 156                 ret=(*a);
 157
 158         p= *pp;
 159         q=p;
 160         max=(p+length);
 161
 162         inf=ASN1_get_object(&q,&len,&tag,&xclass,length);
 163         if (inf & 0x80) goto err;
 164         /* If not universal tag we've no idea what it is */
 165         if(xclass != V_ASN1_UNIVERSAL) tag = V_ASN1_OTHER;
 166
 167         ASN1_TYPE_component_free(ret);
 168
 169         switch (tag)
 170                 {
 171         case V_ASN1_NULL:
 172                 p=q;
 173                 ret->value.ptr=NULL;
 174                 break;
 175         case V_ASN1_INTEGER:
 176                 if ((ret->value.integer=
 177                         d2i_ASN1_INTEGER(NULL,&p,max-p)) == NULL)
 178                         goto err;
 179                 break;
 180         case V_ASN1_ENUMERATED:
 181                 if ((ret->value.enumerated=
 182                         d2i_ASN1_ENUMERATED(NULL,&p,max-p)) == NULL)
 183                         goto err;
 184                 break;
 185         case V_ASN1_BIT_STRING:
 186                 if ((ret->value.bit_string=
 187                         d2i_ASN1_BIT_STRING(NULL,&p,max-p)) == NULL)
 188                         goto err;
 189                 break;
 190         case V_ASN1_OCTET_STRING:
 191                 if ((ret->value.octet_string=
 192                         d2i_ASN1_OCTET_STRING(NULL,&p,max-p)) == NULL)
 193                         goto err;
 194                 break;
 195         case V_ASN1_VISIBLESTRING:
 196                 if ((ret->value.visiblestring=
 197                         d2i_ASN1_VISIBLESTRING(NULL,&p,max-p)) == NULL)
 198                         goto err;
 199                 break;
 200         case V_ASN1_UTF8STRING:
 201                 if ((ret->value.utf8string=
 202                         d2i_ASN1_UTF8STRING(NULL,&p,max-p)) == NULL)
 203                         goto err;
 204                 break;
 205         case V_ASN1_OBJECT:
 206                 if ((ret->value.object=
 207                         d2i_ASN1_OBJECT(NULL,&p,max-p)) == NULL)
 208                         goto err;
 209                 break;
 210         case V_ASN1_PRINTABLESTRING:
 211                 if ((ret->value.printablestring=
 212                         d2i_ASN1_PRINTABLESTRING(NULL,&p,max-p)) == NULL)
 213                         goto err;
 214                 break;
 215         case V_ASN1_T61STRING:
 216                 if ((ret->value.t61string=
 217                         M_d2i_ASN1_T61STRING(NULL,&p,max-p)) == NULL)
 218                         goto err;
 219                 break;
 220         case V_ASN1_IA5STRING:
 221                 if ((ret->value.ia5string=
 222                         M_d2i_ASN1_IA5STRING(NULL,&p,max-p)) == NULL)
 223                         goto err;
 224                 break;
 225         case V_ASN1_GENERALSTRING:
 226                 if ((ret->value.generalstring=
 227                         M_d2i_ASN1_GENERALSTRING(NULL,&p,max-p)) == NULL)
 228                         goto err;
 229                 break;
 230         case V_ASN1_UNIVERSALSTRING:
 231                 if ((ret->value.universalstring=
 232                         M_d2i_ASN1_UNIVERSALSTRING(NULL,&p,max-p)) == NULL)
 233                         goto err;
 234                 break;
 235         case V_ASN1_BMPSTRING:
 236                 if ((ret->value.bmpstring=
 237                         M_d2i_ASN1_BMPSTRING(NULL,&p,max-p)) == NULL)
 238                         goto err;
 239                 break;
 240         case V_ASN1_UTCTIME:
 241                 if ((ret->value.utctime=
 242                         d2i_ASN1_UTCTIME(NULL,&p,max-p)) == NULL)
 243                         goto err;
 244                 break;
 245         case V_ASN1_GENERALIZEDTIME:
 246                 if ((ret->value.generalizedtime=
 247                         d2i_ASN1_GENERALIZEDTIME(NULL,&p,max-p)) == NULL)
 248                         goto err;
 249                 break;
 250         case V_ASN1_SET:
 251         case V_ASN1_SEQUENCE:
 252         case V_ASN1_OTHER:
 253         default:
 254                 /* Sets and sequences are left complete */
 255                 if ((ret->value.set=ASN1_STRING_new()) == NULL) goto err;
 256                 ret->value.set->type=tag;
 257                 len+=(q-p);
 258                 if (!ASN1_STRING_set(ret->value.set,p,(int)len)) goto err;
 259                 p+=len;
 260                 break;
 261                 }
 262
 263         ret->type=tag;
 264         if (a != NULL) (*a)=ret;
 265         *pp=p;
 266         return(ret);
 267 err:
 268         if ((ret != NULL) && ((a == NULL) || (*a != ret))) ASN1_TYPE_free(ret);
 269         return(NULL);
 270         }
 271
 272 ASN1_TYPE *ASN1_TYPE_new(void)
 273         {
 274         ASN1_TYPE *ret=NULL;
 275         ASN1_CTX c;
 276
 277         M_ASN1_New_Malloc(ret,ASN1_TYPE);
 278         ret->type= -1;
 279         ret->value.ptr=NULL;
 280         return(ret);
 281         M_ASN1_New_Error(ASN1_F_ASN1_TYPE_NEW);
 282         }
 283
 284 void ASN1_TYPE_free(ASN1_TYPE *a)
 285         {
 286         if (a == NULL) return;
 287         ASN1_TYPE_component_free(a);
 288         OPENSSL_free(a);
 289         }
 290
 291 int ASN1_TYPE_get(ASN1_TYPE *a)
 292         {
 293         if (a->value.ptr != NULL)
 294                 return(a->type);
 295         else
 296                 return(0);
 297         }
 298
 299 void ASN1_TYPE_set(ASN1_TYPE *a, int type, void *value)
 300         {
 301         if (a->value.ptr != NULL)
 302                 ASN1_TYPE_component_free(a);
 303         a->type=type;
 304         a->value.ptr=value;
 305         }
 306
 307 static void ASN1_TYPE_component_free(ASN1_TYPE *a)
 308         {
 309         if (a == NULL) return;
 310
 311         if (a->value.ptr != NULL)
 312                 {
 313                 switch (a->type)
 314                         {
 315                 case V_ASN1_OBJECT:
 316                         ASN1_OBJECT_free(a->value.object);
 317                         break;
 318                 case V_ASN1_NULL:
 319                         break;
 320                 case V_ASN1_INTEGER:
 321                 case V_ASN1_NEG_INTEGER:
 322                 case V_ASN1_ENUMERATED:
 323                 case V_ASN1_NEG_ENUMERATED:
 324                 case V_ASN1_BIT_STRING:
 325                 case V_ASN1_OCTET_STRING:
 326                 case V_ASN1_SEQUENCE:
 327                 case V_ASN1_SET:
 328                 case V_ASN1_NUMERICSTRING:
 329                 case V_ASN1_PRINTABLESTRING:
 330                 case V_ASN1_T61STRING:
 331                 case V_ASN1_VIDEOTEXSTRING:
 332                 case V_ASN1_IA5STRING:
 333                 case V_ASN1_UTCTIME:
 334                 case V_ASN1_GENERALIZEDTIME:
 335                 case V_ASN1_GRAPHICSTRING:
 336                 case V_ASN1_VISIBLESTRING:
 337                 case V_ASN1_GENERALSTRING:
 338                 case V_ASN1_UNIVERSALSTRING:
 339                 case V_ASN1_BMPSTRING:
 340                 case V_ASN1_UTF8STRING:
 341                 case V_ASN1_OTHER:
 342                 default:
 343                         ASN1_STRING_free((ASN1_STRING *)a->value.ptr);
 344                         break;
 345                         }
 346                 a->type=0;
 347                 a->value.ptr=NULL;
 348                 }
 349         }
 350
 351 IMPLEMENT_STACK_OF(ASN1_TYPE)
 352 IMPLEMENT_ASN1_SET_OF(ASN1_TYPE)