crypto/asn1/a_type.c

   1 /* crypto/asn1/a_type.c */
   2 /* Copyright (C) 1995-1997 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_ASN1_TYPE_NEW,ASN1_R_ERROR_STACK);
  64  * ASN1err(ASN1_F_D2I_ASN1_BYTES,ASN1_R_ERROR_STACK);
  65  * ASN1err(ASN1_F_D2I_ASN1_BYTES,ASN1_R_WRONG_TAG);
  66  * ASN1err(ASN1_F_ASN1_COLLATE_PRIMATIVE,ASN1_R_WRONG_TAG);
  67  */
  68
  69 #ifndef NOPROTO
  70 static void ASN1_TYPE_component_free(ASN1_TYPE *a);
  71 #else
  72 static void ASN1_TYPE_component_free();
  73 #endif
  74
  75 int i2d_ASN1_TYPE(a,pp)
  76 ASN1_TYPE *a;
  77 unsigned char **pp;
  78         {
  79         int r=0;
  80
  81         if (a == NULL) return(0);
  82
  83         switch (a->type)
  84                 {
  85         case V_ASN1_NULL:
  86                 if (pp != NULL)
  87                         ASN1_put_object(pp,0,0,V_ASN1_NULL,V_ASN1_UNIVERSAL);
  88                 r=2;
  89                 break;
  90         case V_ASN1_INTEGER:
  91         case V_ASN1_NEG_INTEGER:
  92                 r=i2d_ASN1_INTEGER(a->value.integer,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_UTCTIME:
 119                 r=i2d_ASN1_UTCTIME(a->value.utctime,pp);
 120                 break;
 121         case V_ASN1_SET:
 122         case V_ASN1_SEQUENCE:
 123                 if (a->value.set == NULL)
 124                         r=0;
 125                 else
 126                         {
 127                         r=a->value.set->length;
 128                         if (pp != NULL)
 129                                 {
 130                                 memcpy(*pp,a->value.set->data,r);
 131                                 *pp+=r;
 132                                 }
 133                         }
 134                 break;
 135                 }
 136         return(r);
 137         }
 138
 139 ASN1_TYPE *d2i_ASN1_TYPE(a,pp,length)
 140 ASN1_TYPE **a;
 141 unsigned char **pp;
 142 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_BIT_STRING:
 177                 if ((ret->value.bit_string=
 178                         d2i_ASN1_BIT_STRING(NULL,&p,max-p)) == NULL)
 179                         goto err;
 180                 break;
 181         case V_ASN1_OCTET_STRING:
 182                 if ((ret->value.octet_string=
 183                         d2i_ASN1_OCTET_STRING(NULL,&p,max-p)) == NULL)
 184                         goto err;
 185                 break;
 186         case V_ASN1_OBJECT:
 187                 if ((ret->value.object=
 188                         d2i_ASN1_OBJECT(NULL,&p,max-p)) == NULL)
 189                         goto err;
 190                 break;
 191         case V_ASN1_PRINTABLESTRING:
 192                 if ((ret->value.printablestring=
 193                         d2i_ASN1_PRINTABLESTRING(NULL,&p,max-p)) == NULL)
 194                         goto err;
 195                 break;
 196         case V_ASN1_T61STRING:
 197                 if ((ret->value.t61string=
 198                         M_d2i_ASN1_T61STRING(NULL,&p,max-p)) == NULL)
 199                         goto err;
 200                 break;
 201         case V_ASN1_IA5STRING:
 202                 if ((ret->value.ia5string=
 203                         M_d2i_ASN1_IA5STRING(NULL,&p,max-p)) == NULL)
 204                         goto err;
 205                 break;
 206         case V_ASN1_GENERALSTRING:
 207                 if ((ret->value.generalstring=
 208                         M_d2i_ASN1_GENERALSTRING(NULL,&p,max-p)) == NULL)
 209                         goto err;
 210                 break;
 211         case V_ASN1_UNIVERSALSTRING:
 212                 if ((ret->value.universalstring=
 213                         M_d2i_ASN1_UNIVERSALSTRING(NULL,&p,max-p)) == NULL)
 214                         goto err;
 215                 break;
 216         case V_ASN1_UTCTIME:
 217                 if ((ret->value.utctime=
 218                         d2i_ASN1_UTCTIME(NULL,&p,max-p)) == NULL)
 219                         goto err;
 220                 break;
 221         case V_ASN1_SET:
 222         case V_ASN1_SEQUENCE:
 223                 /* Sets and sequences are left complete */
 224                 if ((ret->value.set=ASN1_STRING_new()) == NULL) goto err;
 225                 ret->value.set->type=tag;
 226                 len+=(q-p);
 227                 if (!ASN1_STRING_set(ret->value.set,p,(int)len)) goto err;
 228                 p+=len;
 229                 break;
 230         default:
 231                 ASN1err(ASN1_F_D2I_ASN1_TYPE,ASN1_R_BAD_TYPE);
 232                 goto err;
 233                 }
 234
 235         ret->type=tag;
 236         if (a != NULL) (*a)=ret;
 237         *pp=p;
 238         return(ret);
 239 err:
 240         if ((ret != NULL) && ((a == NULL) || (*a != ret))) ASN1_TYPE_free(ret);
 241         return(NULL);
 242         }
 243
 244 ASN1_TYPE *ASN1_TYPE_new()
 245         {
 246         ASN1_TYPE *ret=NULL;
 247
 248         M_ASN1_New_Malloc(ret,ASN1_TYPE);
 249         ret->type= -1;
 250         ret->value.ptr=NULL;
 251         return(ret);
 252         M_ASN1_New_Error(ASN1_F_ASN1_TYPE_NEW);
 253         }
 254
 255 void ASN1_TYPE_free(a)
 256 ASN1_TYPE *a;
 257         {
 258         if (a == NULL) return;
 259         ASN1_TYPE_component_free(a);
 260         Free((char *)(char *)a);
 261         }
 262
 263 int ASN1_TYPE_get(a)
 264 ASN1_TYPE *a;
 265         {
 266         if (a->value.ptr != NULL)
 267                 return(a->type);
 268         else
 269                 return(0);
 270         }
 271
 272 void ASN1_TYPE_set(a,type,value)
 273 ASN1_TYPE *a;
 274 int type;
 275 char *value;
 276         {
 277         if (a->value.ptr != NULL)
 278                 ASN1_TYPE_component_free(a);
 279         a->type=type;
 280         a->value.ptr=value;
 281         }
 282
 283 static void ASN1_TYPE_component_free(a)
 284 ASN1_TYPE *a;
 285         {
 286         if (a == NULL) return;
 287
 288         if (a->value.ptr != NULL)
 289                 {
 290                 switch (a->type)
 291                         {
 292                 case V_ASN1_OBJECT:
 293                         ASN1_OBJECT_free(a->value.object);
 294                         break;
 295                 case V_ASN1_INTEGER:
 296                 case V_ASN1_NEG_INTEGER:
 297                 case V_ASN1_BIT_STRING:
 298                 case V_ASN1_OCTET_STRING:
 299                 case V_ASN1_PRINTABLESTRING:
 300                 case V_ASN1_T61STRING:
 301                 case V_ASN1_IA5STRING:
 302                 case V_ASN1_UNIVERSALSTRING:
 303                 case V_ASN1_GENERALSTRING:
 304                 case V_ASN1_UTCTIME:
 305                 case V_ASN1_SET:
 306                 case V_ASN1_SEQUENCE:
 307                         ASN1_STRING_free((ASN1_STRING *)a->value.ptr);
 308                         break;
 309                 default:
 310                         /* MEMORY LEAK */
 311                         break;
 312                         }
 313                 a->type=0;
 314                 a->value.ptr=NULL;
 315                 }
 316         }
 317