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_BMPSTRING:
 121                 r=M_i2d_ASN1_BMPSTRING(a->value.bmpstring,pp);
 122                 break;
 123         case V_ASN1_UTCTIME:
 124                 r=i2d_ASN1_UTCTIME(a->value.utctime,pp);
 125                 break;
 126         case V_ASN1_GENERALIZEDTIME:
 127                 r=i2d_ASN1_GENERALIZEDTIME(a->value.generalizedtime,pp);
 128                 break;
 129         case V_ASN1_SET:
 130         case V_ASN1_SEQUENCE:
 131                 if (a->value.set == NULL)
 132                         r=0;
 133                 else
 134                         {
 135                         r=a->value.set->length;
 136                         if (pp != NULL)
 137                                 {
 138                                 memcpy(*pp,a->value.set->data,r);
 139                                 *pp+=r;
 140                                 }
 141                         }
 142                 break;
 143                 }
 144         return(r);
 145         }
 146
 147 ASN1_TYPE *d2i_ASN1_TYPE(a,pp,length)
 148 ASN1_TYPE **a;
 149 unsigned char **pp;
 150 long length;
 151         {
 152         ASN1_TYPE *ret=NULL;
 153         unsigned char *q,*p,*max;
 154         int inf,tag,xclass;
 155         long len;
 156
 157         if ((a == NULL) || ((*a) == NULL))
 158                 {
 159                 if ((ret=ASN1_TYPE_new()) == NULL) goto err;
 160                 }
 161         else
 162                 ret=(*a);
 163
 164         p= *pp;
 165         q=p;
 166         max=(p+length);
 167
 168         inf=ASN1_get_object(&q,&len,&tag,&xclass,length);
 169         if (inf & 0x80) goto err;
 170
 171         ASN1_TYPE_component_free(ret);
 172
 173         switch (tag)
 174                 {
 175         case V_ASN1_NULL:
 176                 p=q;
 177                 ret->value.ptr=NULL;
 178                 break;
 179         case V_ASN1_INTEGER:
 180                 if ((ret->value.integer=
 181                         d2i_ASN1_INTEGER(NULL,&p,max-p)) == NULL)
 182                         goto err;
 183                 break;
 184         case V_ASN1_ENUMERATED:
 185                 if ((ret->value.enumerated=
 186                         d2i_ASN1_ENUMERATED(NULL,&p,max-p)) == NULL)
 187                         goto err;
 188                 break;
 189         case V_ASN1_BIT_STRING:
 190                 if ((ret->value.bit_string=
 191                         d2i_ASN1_BIT_STRING(NULL,&p,max-p)) == NULL)
 192                         goto err;
 193                 break;
 194         case V_ASN1_OCTET_STRING:
 195                 if ((ret->value.octet_string=
 196                         d2i_ASN1_OCTET_STRING(NULL,&p,max-p)) == NULL)
 197                         goto err;
 198                 break;
 199         case V_ASN1_OBJECT:
 200                 if ((ret->value.object=
 201                         d2i_ASN1_OBJECT(NULL,&p,max-p)) == NULL)
 202                         goto err;
 203                 break;
 204         case V_ASN1_PRINTABLESTRING:
 205                 if ((ret->value.printablestring=
 206                         d2i_ASN1_PRINTABLESTRING(NULL,&p,max-p)) == NULL)
 207                         goto err;
 208                 break;
 209         case V_ASN1_T61STRING:
 210                 if ((ret->value.t61string=
 211                         M_d2i_ASN1_T61STRING(NULL,&p,max-p)) == NULL)
 212                         goto err;
 213                 break;
 214         case V_ASN1_IA5STRING:
 215                 if ((ret->value.ia5string=
 216                         M_d2i_ASN1_IA5STRING(NULL,&p,max-p)) == NULL)
 217                         goto err;
 218                 break;
 219         case V_ASN1_GENERALSTRING:
 220                 if ((ret->value.generalstring=
 221                         M_d2i_ASN1_GENERALSTRING(NULL,&p,max-p)) == NULL)
 222                         goto err;
 223                 break;
 224         case V_ASN1_UNIVERSALSTRING:
 225                 if ((ret->value.universalstring=
 226                         M_d2i_ASN1_UNIVERSALSTRING(NULL,&p,max-p)) == NULL)
 227                         goto err;
 228                 break;
 229         case V_ASN1_BMPSTRING:
 230                 if ((ret->value.bmpstring=
 231                         M_d2i_ASN1_BMPSTRING(NULL,&p,max-p)) == NULL)
 232                         goto err;
 233                 break;
 234         case V_ASN1_UTCTIME:
 235                 if ((ret->value.utctime=
 236                         d2i_ASN1_UTCTIME(NULL,&p,max-p)) == NULL)
 237                         goto err;
 238                 break;
 239         case V_ASN1_GENERALIZEDTIME:
 240                 if ((ret->value.generalizedtime=
 241                         d2i_ASN1_GENERALIZEDTIME(NULL,&p,max-p)) == NULL)
 242                         goto err;
 243                 break;
 244         case V_ASN1_SET:
 245         case V_ASN1_SEQUENCE:
 246                 /* Sets and sequences are left complete */
 247                 if ((ret->value.set=ASN1_STRING_new()) == NULL) goto err;
 248                 ret->value.set->type=tag;
 249                 len+=(q-p);
 250                 if (!ASN1_STRING_set(ret->value.set,p,(int)len)) goto err;
 251                 p+=len;
 252                 break;
 253         default:
 254                 ASN1err(ASN1_F_D2I_ASN1_TYPE,ASN1_R_BAD_TYPE);
 255                 goto err;
 256                 }
 257
 258         ret->type=tag;
 259         if (a != NULL) (*a)=ret;
 260         *pp=p;
 261         return(ret);
 262 err:
 263         if ((ret != NULL) && ((a == NULL) || (*a != ret))) ASN1_TYPE_free(ret);
 264         return(NULL);
 265         }
 266
 267 ASN1_TYPE *ASN1_TYPE_new()
 268         {
 269         ASN1_TYPE *ret=NULL;
 270         ASN1_CTX c;
 271
 272         M_ASN1_New_Malloc(ret,ASN1_TYPE);
 273         ret->type= -1;
 274         ret->value.ptr=NULL;
 275         return(ret);
 276         M_ASN1_New_Error(ASN1_F_ASN1_TYPE_NEW);
 277         }
 278
 279 void ASN1_TYPE_free(a)
 280 ASN1_TYPE *a;
 281         {
 282         if (a == NULL) return;
 283         ASN1_TYPE_component_free(a);
 284         Free((char *)(char *)a);
 285         }
 286
 287 int ASN1_TYPE_get(a)
 288 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(a,type,value)
 297 ASN1_TYPE *a;
 298 int type;
 299 char *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(a)
 308 ASN1_TYPE *a;
 309         {
 310         if (a == NULL) return;
 311
 312         if (a->value.ptr != NULL)
 313                 {
 314                 switch (a->type)
 315                         {
 316                 case V_ASN1_OBJECT:
 317                         ASN1_OBJECT_free(a->value.object);
 318                         break;
 319                 case V_ASN1_INTEGER:
 320                 case V_ASN1_NEG_INTEGER:
 321                 case V_ASN1_ENUMERATED:
 322                 case V_ASN1_NEG_ENUMERATED:
 323                 case V_ASN1_BIT_STRING:
 324                 case V_ASN1_OCTET_STRING:
 325                 case V_ASN1_SEQUENCE:
 326                 case V_ASN1_SET:
 327                 case V_ASN1_NUMERICSTRING:
 328                 case V_ASN1_PRINTABLESTRING:
 329                 case V_ASN1_T61STRING:
 330                 case V_ASN1_VIDEOTEXSTRING:
 331                 case V_ASN1_IA5STRING:
 332                 case V_ASN1_UTCTIME:
 333                 case V_ASN1_GENERALIZEDTIME:
 334                 case V_ASN1_GRAPHICSTRING:
 335                 case V_ASN1_VISIBLESTRING:
 336                 case V_ASN1_GENERALSTRING:
 337                 case V_ASN1_UNIVERSALSTRING:
 338                 case V_ASN1_BMPSTRING:
 339                         ASN1_STRING_free((ASN1_STRING *)a->value.ptr);
 340                         break;
 341                 default:
 342                         /* MEMORY LEAK */
 343                         break;
 344                         }
 345                 a->type=0;
 346                 a->value.ptr=NULL;
 347                 }
 348         }
 349