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                 if (a->value.set == NULL)
 127                         r=0;
 128                 else
 129                         {
 130                         r=a->value.set->length;
 131                         if (pp != NULL)
 132                                 {
 133                                 memcpy(*pp,a->value.set->data,r);
 134                                 *pp+=r;
 135                                 }
 136                         }
 137                 break;
 138                 }
 139         return(r);
 140         }
 141
 142 ASN1_TYPE *d2i_ASN1_TYPE(ASN1_TYPE **a, unsigned char **pp, long length)
 143         {
 144         ASN1_TYPE *ret=NULL;
 145         unsigned char *q,*p,*max;
 146         int inf,tag,xclass;
 147         long len;
 148
 149         if ((a == NULL) || ((*a) == NULL))
 150                 {
 151                 if ((ret=ASN1_TYPE_new()) == NULL) goto err;
 152                 }
 153         else
 154                 ret=(*a);
 155
 156         p= *pp;
 157         q=p;
 158         max=(p+length);
 159
 160         inf=ASN1_get_object(&q,&len,&tag,&xclass,length);
 161         if (inf & 0x80) goto err;
 162
 163         ASN1_TYPE_component_free(ret);
 164
 165         switch (tag)
 166                 {
 167         case V_ASN1_NULL:
 168                 p=q;
 169                 ret->value.ptr=NULL;
 170                 break;
 171         case V_ASN1_INTEGER:
 172                 if ((ret->value.integer=
 173                         d2i_ASN1_INTEGER(NULL,&p,max-p)) == NULL)
 174                         goto err;
 175                 break;
 176         case V_ASN1_ENUMERATED:
 177                 if ((ret->value.enumerated=
 178                         d2i_ASN1_ENUMERATED(NULL,&p,max-p)) == NULL)
 179                         goto err;
 180                 break;
 181         case V_ASN1_BIT_STRING:
 182                 if ((ret->value.bit_string=
 183                         d2i_ASN1_BIT_STRING(NULL,&p,max-p)) == NULL)
 184                         goto err;
 185                 break;
 186         case V_ASN1_OCTET_STRING:
 187                 if ((ret->value.octet_string=
 188                         d2i_ASN1_OCTET_STRING(NULL,&p,max-p)) == NULL)
 189                         goto err;
 190                 break;
 191         case V_ASN1_VISIBLESTRING:
 192                 if ((ret->value.visiblestring=
 193                         d2i_ASN1_VISIBLESTRING(NULL,&p,max-p)) == NULL)
 194                         goto err;
 195                 break;
 196         case V_ASN1_UTF8STRING:
 197                 if ((ret->value.utf8string=
 198                         d2i_ASN1_UTF8STRING(NULL,&p,max-p)) == NULL)
 199                         goto err;
 200                 break;
 201         case V_ASN1_OBJECT:
 202                 if ((ret->value.object=
 203                         d2i_ASN1_OBJECT(NULL,&p,max-p)) == NULL)
 204                         goto err;
 205                 break;
 206         case V_ASN1_PRINTABLESTRING:
 207                 if ((ret->value.printablestring=
 208                         d2i_ASN1_PRINTABLESTRING(NULL,&p,max-p)) == NULL)
 209                         goto err;
 210                 break;
 211         case V_ASN1_T61STRING:
 212                 if ((ret->value.t61string=
 213                         M_d2i_ASN1_T61STRING(NULL,&p,max-p)) == NULL)
 214                         goto err;
 215                 break;
 216         case V_ASN1_IA5STRING:
 217                 if ((ret->value.ia5string=
 218                         M_d2i_ASN1_IA5STRING(NULL,&p,max-p)) == NULL)
 219                         goto err;
 220                 break;
 221         case V_ASN1_GENERALSTRING:
 222                 if ((ret->value.generalstring=
 223                         M_d2i_ASN1_GENERALSTRING(NULL,&p,max-p)) == NULL)
 224                         goto err;
 225                 break;
 226         case V_ASN1_UNIVERSALSTRING:
 227                 if ((ret->value.universalstring=
 228                         M_d2i_ASN1_UNIVERSALSTRING(NULL,&p,max-p)) == NULL)
 229                         goto err;
 230                 break;
 231         case V_ASN1_BMPSTRING:
 232                 if ((ret->value.bmpstring=
 233                         M_d2i_ASN1_BMPSTRING(NULL,&p,max-p)) == NULL)
 234                         goto err;
 235                 break;
 236         case V_ASN1_UTCTIME:
 237                 if ((ret->value.utctime=
 238                         d2i_ASN1_UTCTIME(NULL,&p,max-p)) == NULL)
 239                         goto err;
 240                 break;
 241         case V_ASN1_GENERALIZEDTIME:
 242                 if ((ret->value.generalizedtime=
 243                         d2i_ASN1_GENERALIZEDTIME(NULL,&p,max-p)) == NULL)
 244                         goto err;
 245                 break;
 246         case V_ASN1_SET:
 247         case V_ASN1_SEQUENCE:
 248                 /* Sets and sequences are left complete */
 249                 if ((ret->value.set=ASN1_STRING_new()) == NULL) goto err;
 250                 ret->value.set->type=tag;
 251                 len+=(q-p);
 252                 if (!ASN1_STRING_set(ret->value.set,p,(int)len)) goto err;
 253                 p+=len;
 254                 break;
 255         default:
 256                 ASN1err(ASN1_F_D2I_ASN1_TYPE,ASN1_R_BAD_TYPE);
 257                 goto err;
 258                 }
 259
 260         ret->type=tag;
 261         if (a != NULL) (*a)=ret;
 262         *pp=p;
 263         return(ret);
 264 err:
 265         if ((ret != NULL) && ((a == NULL) || (*a != ret))) ASN1_TYPE_free(ret);
 266         return(NULL);
 267         }
 268
 269 ASN1_TYPE *ASN1_TYPE_new(void)
 270         {
 271         ASN1_TYPE *ret=NULL;
 272         ASN1_CTX c;
 273
 274         M_ASN1_New_Malloc(ret,ASN1_TYPE);
 275         ret->type= -1;
 276         ret->value.ptr=NULL;
 277         return(ret);
 278         M_ASN1_New_Error(ASN1_F_ASN1_TYPE_NEW);
 279         }
 280
 281 void ASN1_TYPE_free(ASN1_TYPE *a)
 282         {
 283         if (a == NULL) return;
 284         ASN1_TYPE_component_free(a);
 285         Free((char *)(char *)a);
 286         }
 287
 288 int ASN1_TYPE_get(ASN1_TYPE *a)
 289         {
 290         if (a->value.ptr != NULL)
 291                 return(a->type);
 292         else
 293                 return(0);
 294         }
 295
 296 void ASN1_TYPE_set(ASN1_TYPE *a, int type, char *value)
 297         {
 298         if (a->value.ptr != NULL)
 299                 ASN1_TYPE_component_free(a);
 300         a->type=type;
 301         a->value.ptr=value;
 302         }
 303
 304 static void ASN1_TYPE_component_free(ASN1_TYPE *a)
 305         {
 306         if (a == NULL) return;
 307
 308         if (a->value.ptr != NULL)
 309                 {
 310                 switch (a->type)
 311                         {
 312                 case V_ASN1_OBJECT:
 313                         ASN1_OBJECT_free(a->value.object);
 314                         break;
 315                 case V_ASN1_INTEGER:
 316                 case V_ASN1_NEG_INTEGER:
 317                 case V_ASN1_ENUMERATED:
 318                 case V_ASN1_NEG_ENUMERATED:
 319                 case V_ASN1_BIT_STRING:
 320                 case V_ASN1_OCTET_STRING:
 321                 case V_ASN1_SEQUENCE:
 322                 case V_ASN1_SET:
 323                 case V_ASN1_NUMERICSTRING:
 324                 case V_ASN1_PRINTABLESTRING:
 325                 case V_ASN1_T61STRING:
 326                 case V_ASN1_VIDEOTEXSTRING:
 327                 case V_ASN1_IA5STRING:
 328                 case V_ASN1_UTCTIME:
 329                 case V_ASN1_GENERALIZEDTIME:
 330                 case V_ASN1_GRAPHICSTRING:
 331                 case V_ASN1_VISIBLESTRING:
 332                 case V_ASN1_GENERALSTRING:
 333                 case V_ASN1_UNIVERSALSTRING:
 334                 case V_ASN1_BMPSTRING:
 335                 case V_ASN1_UTF8STRING:
 336                         ASN1_STRING_free((ASN1_STRING *)a->value.ptr);
 337                         break;
 338                 default:
 339                         /* MEMORY LEAK */
 340                         break;
 341                         }
 342                 a->type=0;
 343                 a->value.ptr=NULL;
 344                 }
 345         }
 346
 347 IMPLEMENT_STACK_OF(ASN1_TYPE)
 348 IMPLEMENT_ASN1_SET_OF(ASN1_TYPE)