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