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 /* ASN1err(ASN1_F_D2I_ASN1_BYTES,ASN1_R_WRONG_TAG);
  64  * ASN1err(ASN1_F_ASN1_COLLATE_PRIMATIVE,ASN1_R_WRONG_TAG);
  65  */
  66
  67 #ifndef NOPROTO
  68 static void ASN1_TYPE_component_free(ASN1_TYPE *a);
  69 #else
  70 static void ASN1_TYPE_component_free();
  71 #endif
  72
  73 int i2d_ASN1_TYPE(ASN1_TYPE *a, unsigned char **pp)
  74         {
  75         int r=0;
  76
  77         if (a == NULL) return(0);
  78
  79         switch (a->type)
  80                 {
  81         case V_ASN1_NULL:
  82                 if (pp != NULL)
  83                         ASN1_put_object(pp,0,0,V_ASN1_NULL,V_ASN1_UNIVERSAL);
  84                 r=2;
  85                 break;
  86         case V_ASN1_INTEGER:
  87         case V_ASN1_NEG_INTEGER:
  88                 r=i2d_ASN1_INTEGER(a->value.integer,pp);
  89                 break;
  90         case V_ASN1_ENUMERATED:
  91         case V_ASN1_NEG_ENUMERATED:
  92                 r=i2d_ASN1_ENUMERATED(a->value.enumerated,pp);
  93                 break;
  94         case V_ASN1_BIT_STRING:
  95                 r=i2d_ASN1_BIT_STRING(a->value.bit_string,pp);
  96                 break;
  97         case V_ASN1_OCTET_STRING:
  98                 r=i2d_ASN1_OCTET_STRING(a->value.octet_string,pp);
  99                 break;
 100         case V_ASN1_OBJECT:
 101                 r=i2d_ASN1_OBJECT(a->value.object,pp);
 102                 break;
 103         case V_ASN1_PRINTABLESTRING:
 104                 r=M_i2d_ASN1_PRINTABLESTRING(a->value.printablestring,pp);
 105                 break;
 106         case V_ASN1_T61STRING:
 107                 r=M_i2d_ASN1_T61STRING(a->value.t61string,pp);
 108                 break;
 109         case V_ASN1_IA5STRING:
 110                 r=M_i2d_ASN1_IA5STRING(a->value.ia5string,pp);
 111                 break;
 112         case V_ASN1_GENERALSTRING:
 113                 r=M_i2d_ASN1_GENERALSTRING(a->value.generalstring,pp);
 114                 break;
 115         case V_ASN1_UNIVERSALSTRING:
 116                 r=M_i2d_ASN1_UNIVERSALSTRING(a->value.universalstring,pp);
 117                 break;
 118         case V_ASN1_UTF8STRING:
 119                 r=M_i2d_ASN1_UTF8STRING(a->value.utf8string,pp);
 120                 break;
 121         case V_ASN1_VISIBLESTRING:
 122                 r=M_i2d_ASN1_VISIBLESTRING(a->value.visiblestring,pp);
 123                 break;
 124         case V_ASN1_BMPSTRING:
 125                 r=M_i2d_ASN1_BMPSTRING(a->value.bmpstring,pp);
 126                 break;
 127         case V_ASN1_UTCTIME:
 128                 r=i2d_ASN1_UTCTIME(a->value.utctime,pp);
 129                 break;
 130         case V_ASN1_GENERALIZEDTIME:
 131                 r=i2d_ASN1_GENERALIZEDTIME(a->value.generalizedtime,pp);
 132                 break;
 133         case V_ASN1_SET:
 134         case V_ASN1_SEQUENCE:
 135                 if (a->value.set == NULL)
 136                         r=0;
 137                 else
 138                         {
 139                         r=a->value.set->length;
 140                         if (pp != NULL)
 141                                 {
 142                                 memcpy(*pp,a->value.set->data,r);
 143                                 *pp+=r;
 144                                 }
 145                         }
 146                 break;
 147                 }
 148         return(r);
 149         }
 150
 151 ASN1_TYPE *d2i_ASN1_TYPE(ASN1_TYPE **a, unsigned char **pp, long length)
 152         {
 153         ASN1_TYPE *ret=NULL;
 154         unsigned char *q,*p,*max;
 155         int inf,tag,xclass;
 156         long len;
 157
 158         if ((a == NULL) || ((*a) == NULL))
 159                 {
 160                 if ((ret=ASN1_TYPE_new()) == NULL) goto err;
 161                 }
 162         else
 163                 ret=(*a);
 164
 165         p= *pp;
 166         q=p;
 167         max=(p+length);
 168
 169         inf=ASN1_get_object(&q,&len,&tag,&xclass,length);
 170         if (inf & 0x80) goto err;
 171
 172         ASN1_TYPE_component_free(ret);
 173
 174         switch (tag)
 175                 {
 176         case V_ASN1_NULL:
 177                 p=q;
 178                 ret->value.ptr=NULL;
 179                 break;
 180         case V_ASN1_INTEGER:
 181                 if ((ret->value.integer=
 182                         d2i_ASN1_INTEGER(NULL,&p,max-p)) == NULL)
 183                         goto err;
 184                 break;
 185         case V_ASN1_ENUMERATED:
 186                 if ((ret->value.enumerated=
 187                         d2i_ASN1_ENUMERATED(NULL,&p,max-p)) == NULL)
 188                         goto err;
 189                 break;
 190         case V_ASN1_BIT_STRING:
 191                 if ((ret->value.bit_string=
 192                         d2i_ASN1_BIT_STRING(NULL,&p,max-p)) == NULL)
 193                         goto err;
 194                 break;
 195         case V_ASN1_OCTET_STRING:
 196                 if ((ret->value.octet_string=
 197                         d2i_ASN1_OCTET_STRING(NULL,&p,max-p)) == NULL)
 198                         goto err;
 199                 break;
 200         case V_ASN1_VISIBLESTRING:
 201                 if ((ret->value.visiblestring=
 202                         d2i_ASN1_VISIBLESTRING(NULL,&p,max-p)) == NULL)
 203                         goto err;
 204                 break;
 205         case V_ASN1_UTF8STRING:
 206                 if ((ret->value.utf8string=
 207                         d2i_ASN1_UTF8STRING(NULL,&p,max-p)) == NULL)
 208                         goto err;
 209                 break;
 210         case V_ASN1_OBJECT:
 211                 if ((ret->value.object=
 212                         d2i_ASN1_OBJECT(NULL,&p,max-p)) == NULL)
 213                         goto err;
 214                 break;
 215         case V_ASN1_PRINTABLESTRING:
 216                 if ((ret->value.printablestring=
 217                         d2i_ASN1_PRINTABLESTRING(NULL,&p,max-p)) == NULL)
 218                         goto err;
 219                 break;
 220         case V_ASN1_T61STRING:
 221                 if ((ret->value.t61string=
 222                         M_d2i_ASN1_T61STRING(NULL,&p,max-p)) == NULL)
 223                         goto err;
 224                 break;
 225         case V_ASN1_IA5STRING:
 226                 if ((ret->value.ia5string=
 227                         M_d2i_ASN1_IA5STRING(NULL,&p,max-p)) == NULL)
 228                         goto err;
 229                 break;
 230         case V_ASN1_GENERALSTRING:
 231                 if ((ret->value.generalstring=
 232                         M_d2i_ASN1_GENERALSTRING(NULL,&p,max-p)) == NULL)
 233                         goto err;
 234                 break;
 235         case V_ASN1_UNIVERSALSTRING:
 236                 if ((ret->value.universalstring=
 237                         M_d2i_ASN1_UNIVERSALSTRING(NULL,&p,max-p)) == NULL)
 238                         goto err;
 239                 break;
 240         case V_ASN1_BMPSTRING:
 241                 if ((ret->value.bmpstring=
 242                         M_d2i_ASN1_BMPSTRING(NULL,&p,max-p)) == NULL)
 243                         goto err;
 244                 break;
 245         case V_ASN1_UTCTIME:
 246                 if ((ret->value.utctime=
 247                         d2i_ASN1_UTCTIME(NULL,&p,max-p)) == NULL)
 248                         goto err;
 249                 break;
 250         case V_ASN1_GENERALIZEDTIME:
 251                 if ((ret->value.generalizedtime=
 252                         d2i_ASN1_GENERALIZEDTIME(NULL,&p,max-p)) == NULL)
 253                         goto err;
 254                 break;
 255         case V_ASN1_SET:
 256         case V_ASN1_SEQUENCE:
 257                 /* Sets and sequences are left complete */
 258                 if ((ret->value.set=ASN1_STRING_new()) == NULL) goto err;
 259                 ret->value.set->type=tag;
 260                 len+=(q-p);
 261                 if (!ASN1_STRING_set(ret->value.set,p,(int)len)) goto err;
 262                 p+=len;
 263                 break;
 264         default:
 265                 ASN1err(ASN1_F_D2I_ASN1_TYPE,ASN1_R_BAD_TYPE);
 266                 goto err;
 267                 }
 268
 269         ret->type=tag;
 270         if (a != NULL) (*a)=ret;
 271         *pp=p;
 272         return(ret);
 273 err:
 274         if ((ret != NULL) && ((a == NULL) || (*a != ret))) ASN1_TYPE_free(ret);
 275         return(NULL);
 276         }
 277
 278 ASN1_TYPE *ASN1_TYPE_new(void)
 279         {
 280         ASN1_TYPE *ret=NULL;
 281         ASN1_CTX c;
 282
 283         M_ASN1_New_Malloc(ret,ASN1_TYPE);
 284         ret->type= -1;
 285         ret->value.ptr=NULL;
 286         return(ret);
 287         M_ASN1_New_Error(ASN1_F_ASN1_TYPE_NEW);
 288         }
 289
 290 void ASN1_TYPE_free(ASN1_TYPE *a)
 291         {
 292         if (a == NULL) return;
 293         ASN1_TYPE_component_free(a);
 294         Free((char *)(char *)a);
 295         }
 296
 297 int ASN1_TYPE_get(ASN1_TYPE *a)
 298         {
 299         if (a->value.ptr != NULL)
 300                 return(a->type);
 301         else
 302                 return(0);
 303         }
 304
 305 void ASN1_TYPE_set(ASN1_TYPE *a, int type, char *value)
 306         {
 307         if (a->value.ptr != NULL)
 308                 ASN1_TYPE_component_free(a);
 309         a->type=type;
 310         a->value.ptr=value;
 311         }
 312
 313 static void ASN1_TYPE_component_free(ASN1_TYPE *a)
 314         {
 315         if (a == NULL) return;
 316
 317         if (a->value.ptr != NULL)
 318                 {
 319                 switch (a->type)
 320                         {
 321                 case V_ASN1_OBJECT:
 322                         ASN1_OBJECT_free(a->value.object);
 323                         break;
 324                 case V_ASN1_INTEGER:
 325                 case V_ASN1_NEG_INTEGER:
 326                 case V_ASN1_ENUMERATED:
 327                 case V_ASN1_NEG_ENUMERATED:
 328                 case V_ASN1_BIT_STRING:
 329                 case V_ASN1_OCTET_STRING:
 330                 case V_ASN1_SEQUENCE:
 331                 case V_ASN1_SET:
 332                 case V_ASN1_NUMERICSTRING:
 333                 case V_ASN1_PRINTABLESTRING:
 334                 case V_ASN1_T61STRING:
 335                 case V_ASN1_VIDEOTEXSTRING:
 336                 case V_ASN1_IA5STRING:
 337                 case V_ASN1_UTCTIME:
 338                 case V_ASN1_GENERALIZEDTIME:
 339                 case V_ASN1_GRAPHICSTRING:
 340                 case V_ASN1_VISIBLESTRING:
 341                 case V_ASN1_GENERALSTRING:
 342                 case V_ASN1_UNIVERSALSTRING:
 343                 case V_ASN1_BMPSTRING:
 344                 case V_ASN1_UTF8STRING:
 345                         ASN1_STRING_free((ASN1_STRING *)a->value.ptr);
 346                         break;
 347                 default:
 348                         /* MEMORY LEAK */
 349                         break;
 350                         }
 351                 a->type=0;
 352                 a->value.ptr=NULL;
 353                 }
 354         }
 355