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 "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(a,pp)
  74 ASN1_TYPE *a;
  75 unsigned char **pp;
  76         {
  77         int r=0;
  78
  79         if (a == NULL) return(0);
  80
  81         switch (a->type)
  82                 {
  83         case V_ASN1_NULL:
  84                 if (pp != NULL)
  85                         ASN1_put_object(pp,0,0,V_ASN1_NULL,V_ASN1_UNIVERSAL);
  86                 r=2;
  87                 break;
  88         case V_ASN1_INTEGER:
  89         case V_ASN1_NEG_INTEGER:
  90                 r=i2d_ASN1_INTEGER(a->value.integer,pp);
  91                 break;
  92         case V_ASN1_ENUMERATED:
  93         case V_ASN1_NEG_ENUMERATED:
  94                 r=i2d_ASN1_ENUMERATED(a->value.enumerated,pp);
  95                 break;
  96         case V_ASN1_BIT_STRING:
  97                 r=i2d_ASN1_BIT_STRING(a->value.bit_string,pp);
  98                 break;
  99         case V_ASN1_OCTET_STRING:
 100                 r=i2d_ASN1_OCTET_STRING(a->value.octet_string,pp);
 101                 break;
 102         case V_ASN1_OBJECT:
 103                 r=i2d_ASN1_OBJECT(a->value.object,pp);
 104                 break;
 105         case V_ASN1_PRINTABLESTRING:
 106                 r=M_i2d_ASN1_PRINTABLESTRING(a->value.printablestring,pp);
 107                 break;
 108         case V_ASN1_T61STRING:
 109                 r=M_i2d_ASN1_T61STRING(a->value.t61string,pp);
 110                 break;
 111         case V_ASN1_IA5STRING:
 112                 r=M_i2d_ASN1_IA5STRING(a->value.ia5string,pp);
 113                 break;
 114         case V_ASN1_GENERALSTRING:
 115                 r=M_i2d_ASN1_GENERALSTRING(a->value.generalstring,pp);
 116                 break;
 117         case V_ASN1_UNIVERSALSTRING:
 118                 r=M_i2d_ASN1_UNIVERSALSTRING(a->value.universalstring,pp);
 119                 break;
 120         case V_ASN1_UTF8STRING:
 121                 r=M_i2d_ASN1_UTF8STRING(a->value.utf8string,pp);
 122                 break;
 123         case V_ASN1_VISIBLESTRING:
 124                 r=M_i2d_ASN1_VISIBLESTRING(a->value.visiblestring,pp);
 125                 break;
 126         case V_ASN1_BMPSTRING:
 127                 r=M_i2d_ASN1_BMPSTRING(a->value.bmpstring,pp);
 128                 break;
 129         case V_ASN1_UTCTIME:
 130                 r=i2d_ASN1_UTCTIME(a->value.utctime,pp);
 131                 break;
 132         case V_ASN1_GENERALIZEDTIME:
 133                 r=i2d_ASN1_GENERALIZEDTIME(a->value.generalizedtime,pp);
 134                 break;
 135         case V_ASN1_SET:
 136         case V_ASN1_SEQUENCE:
 137                 if (a->value.set == NULL)
 138                         r=0;
 139                 else
 140                         {
 141                         r=a->value.set->length;
 142                         if (pp != NULL)
 143                                 {
 144                                 memcpy(*pp,a->value.set->data,r);
 145                                 *pp+=r;
 146                                 }
 147                         }
 148                 break;
 149                 }
 150         return(r);
 151         }
 152
 153 ASN1_TYPE *d2i_ASN1_TYPE(a,pp,length)
 154 ASN1_TYPE **a;
 155 unsigned char **pp;
 156 long length;
 157         {
 158         ASN1_TYPE *ret=NULL;
 159         unsigned char *q,*p,*max;
 160         int inf,tag,xclass;
 161         long len;
 162
 163         if ((a == NULL) || ((*a) == NULL))
 164                 {
 165                 if ((ret=ASN1_TYPE_new()) == NULL) goto err;
 166                 }
 167         else
 168                 ret=(*a);
 169
 170         p= *pp;
 171         q=p;
 172         max=(p+length);
 173
 174         inf=ASN1_get_object(&q,&len,&tag,&xclass,length);
 175         if (inf & 0x80) goto err;
 176
 177         ASN1_TYPE_component_free(ret);
 178
 179         switch (tag)
 180                 {
 181         case V_ASN1_NULL:
 182                 p=q;
 183                 ret->value.ptr=NULL;
 184                 break;
 185         case V_ASN1_INTEGER:
 186                 if ((ret->value.integer=
 187                         d2i_ASN1_INTEGER(NULL,&p,max-p)) == NULL)
 188                         goto err;
 189                 break;
 190         case V_ASN1_ENUMERATED:
 191                 if ((ret->value.enumerated=
 192                         d2i_ASN1_ENUMERATED(NULL,&p,max-p)) == NULL)
 193                         goto err;
 194                 break;
 195         case V_ASN1_BIT_STRING:
 196                 if ((ret->value.bit_string=
 197                         d2i_ASN1_BIT_STRING(NULL,&p,max-p)) == NULL)
 198                         goto err;
 199                 break;
 200         case V_ASN1_OCTET_STRING:
 201                 if ((ret->value.octet_string=
 202                         d2i_ASN1_OCTET_STRING(NULL,&p,max-p)) == NULL)
 203                         goto err;
 204                 break;
 205         case V_ASN1_VISIBLESTRING:
 206                 if ((ret->value.visiblestring=
 207                         d2i_ASN1_VISIBLESTRING(NULL,&p,max-p)) == NULL)
 208                         goto err;
 209                 break;
 210         case V_ASN1_UTF8STRING:
 211                 if ((ret->value.utf8string=
 212                         d2i_ASN1_UTF8STRING(NULL,&p,max-p)) == NULL)
 213                         goto err;
 214                 break;
 215         case V_ASN1_OBJECT:
 216                 if ((ret->value.object=
 217                         d2i_ASN1_OBJECT(NULL,&p,max-p)) == NULL)
 218                         goto err;
 219                 break;
 220         case V_ASN1_PRINTABLESTRING:
 221                 if ((ret->value.printablestring=
 222                         d2i_ASN1_PRINTABLESTRING(NULL,&p,max-p)) == NULL)
 223                         goto err;
 224                 break;
 225         case V_ASN1_T61STRING:
 226                 if ((ret->value.t61string=
 227                         M_d2i_ASN1_T61STRING(NULL,&p,max-p)) == NULL)
 228                         goto err;
 229                 break;
 230         case V_ASN1_IA5STRING:
 231                 if ((ret->value.ia5string=
 232                         M_d2i_ASN1_IA5STRING(NULL,&p,max-p)) == NULL)
 233                         goto err;
 234                 break;
 235         case V_ASN1_GENERALSTRING:
 236                 if ((ret->value.generalstring=
 237                         M_d2i_ASN1_GENERALSTRING(NULL,&p,max-p)) == NULL)
 238                         goto err;
 239                 break;
 240         case V_ASN1_UNIVERSALSTRING:
 241                 if ((ret->value.universalstring=
 242                         M_d2i_ASN1_UNIVERSALSTRING(NULL,&p,max-p)) == NULL)
 243                         goto err;
 244                 break;
 245         case V_ASN1_BMPSTRING:
 246                 if ((ret->value.bmpstring=
 247                         M_d2i_ASN1_BMPSTRING(NULL,&p,max-p)) == NULL)
 248                         goto err;
 249                 break;
 250         case V_ASN1_UTCTIME:
 251                 if ((ret->value.utctime=
 252                         d2i_ASN1_UTCTIME(NULL,&p,max-p)) == NULL)
 253                         goto err;
 254                 break;
 255         case V_ASN1_GENERALIZEDTIME:
 256                 if ((ret->value.generalizedtime=
 257                         d2i_ASN1_GENERALIZEDTIME(NULL,&p,max-p)) == NULL)
 258                         goto err;
 259                 break;
 260         case V_ASN1_SET:
 261         case V_ASN1_SEQUENCE:
 262                 /* Sets and sequences are left complete */
 263                 if ((ret->value.set=ASN1_STRING_new()) == NULL) goto err;
 264                 ret->value.set->type=tag;
 265                 len+=(q-p);
 266                 if (!ASN1_STRING_set(ret->value.set,p,(int)len)) goto err;
 267                 p+=len;
 268                 break;
 269         default:
 270                 ASN1err(ASN1_F_D2I_ASN1_TYPE,ASN1_R_BAD_TYPE);
 271                 goto err;
 272                 }
 273
 274         ret->type=tag;
 275         if (a != NULL) (*a)=ret;
 276         *pp=p;
 277         return(ret);
 278 err:
 279         if ((ret != NULL) && ((a == NULL) || (*a != ret))) ASN1_TYPE_free(ret);
 280         return(NULL);
 281         }
 282
 283 ASN1_TYPE *ASN1_TYPE_new()
 284         {
 285         ASN1_TYPE *ret=NULL;
 286         ASN1_CTX c;
 287
 288         M_ASN1_New_Malloc(ret,ASN1_TYPE);
 289         ret->type= -1;
 290         ret->value.ptr=NULL;
 291         return(ret);
 292         M_ASN1_New_Error(ASN1_F_ASN1_TYPE_NEW);
 293         }
 294
 295 void ASN1_TYPE_free(a)
 296 ASN1_TYPE *a;
 297         {
 298         if (a == NULL) return;
 299         ASN1_TYPE_component_free(a);
 300         Free((char *)(char *)a);
 301         }
 302
 303 int ASN1_TYPE_get(a)
 304 ASN1_TYPE *a;
 305         {
 306         if (a->value.ptr != NULL)
 307                 return(a->type);
 308         else
 309                 return(0);
 310         }
 311
 312 void ASN1_TYPE_set(a,type,value)
 313 ASN1_TYPE *a;
 314 int type;
 315 char *value;
 316         {
 317         if (a->value.ptr != NULL)
 318                 ASN1_TYPE_component_free(a);
 319         a->type=type;
 320         a->value.ptr=value;
 321         }
 322
 323 static void ASN1_TYPE_component_free(a)
 324 ASN1_TYPE *a;
 325         {
 326         if (a == NULL) return;
 327
 328         if (a->value.ptr != NULL)
 329                 {
 330                 switch (a->type)
 331                         {
 332                 case V_ASN1_OBJECT:
 333                         ASN1_OBJECT_free(a->value.object);
 334                         break;
 335                 case V_ASN1_INTEGER:
 336                 case V_ASN1_NEG_INTEGER:
 337                 case V_ASN1_ENUMERATED:
 338                 case V_ASN1_NEG_ENUMERATED:
 339                 case V_ASN1_BIT_STRING:
 340                 case V_ASN1_OCTET_STRING:
 341                 case V_ASN1_SEQUENCE:
 342                 case V_ASN1_SET:
 343                 case V_ASN1_NUMERICSTRING:
 344                 case V_ASN1_PRINTABLESTRING:
 345                 case V_ASN1_T61STRING:
 346                 case V_ASN1_VIDEOTEXSTRING:
 347                 case V_ASN1_IA5STRING:
 348                 case V_ASN1_UTCTIME:
 349                 case V_ASN1_GENERALIZEDTIME:
 350                 case V_ASN1_GRAPHICSTRING:
 351                 case V_ASN1_VISIBLESTRING:
 352                 case V_ASN1_GENERALSTRING:
 353                 case V_ASN1_UNIVERSALSTRING:
 354                 case V_ASN1_BMPSTRING:
 355                 case V_ASN1_UTF8STRING:
 356                         ASN1_STRING_free((ASN1_STRING *)a->value.ptr);
 357                         break;
 358                 default:
 359                         /* MEMORY LEAK */
 360                         break;
 361                         }
 362                 a->type=0;
 363                 a->value.ptr=NULL;
 364                 }
 365         }
 366