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