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_GENERALIZEDTIME:
 123                 r=i2d_ASN1_GENERALIZEDTIME(a->value.generalizedtime,pp);
 124                 break;
 125         case V_ASN1_SET:
 126         case V_ASN1_SEQUENCE:
 127                 if (a->value.set == NULL)
 128                         r=0;
 129                 else
 130                         {
 131                         r=a->value.set->length;
 132                         if (pp != NULL)
 133                                 {
 134                                 memcpy(*pp,a->value.set->data,r);
 135                                 *pp+=r;
 136                                 }
 137                         }
 138                 break;
 139                 }
 140         return(r);
 141         }
 142
 143 ASN1_TYPE *d2i_ASN1_TYPE(a,pp,length)
 144 ASN1_TYPE **a;
 145 unsigned char **pp;
 146 long length;
 147         {
 148         ASN1_TYPE *ret=NULL;
 149         unsigned char *q,*p,*max;
 150         int inf,tag,xclass;
 151         long len;
 152
 153         if ((a == NULL) || ((*a) == NULL))
 154                 {
 155                 if ((ret=ASN1_TYPE_new()) == NULL) goto err;
 156                 }
 157         else
 158                 ret=(*a);
 159
 160         p= *pp;
 161         q=p;
 162         max=(p+length);
 163
 164         inf=ASN1_get_object(&q,&len,&tag,&xclass,length);
 165         if (inf & 0x80) goto err;
 166
 167         ASN1_TYPE_component_free(ret);
 168
 169         switch (tag)
 170                 {
 171         case V_ASN1_NULL:
 172                 p=q;
 173                 ret->value.ptr=NULL;
 174                 break;
 175         case V_ASN1_INTEGER:
 176                 if ((ret->value.integer=
 177                         d2i_ASN1_INTEGER(NULL,&p,max-p)) == NULL)
 178                         goto err;
 179                 break;
 180         case V_ASN1_BIT_STRING:
 181                 if ((ret->value.bit_string=
 182                         d2i_ASN1_BIT_STRING(NULL,&p,max-p)) == NULL)
 183                         goto err;
 184                 break;
 185         case V_ASN1_OCTET_STRING:
 186                 if ((ret->value.octet_string=
 187                         d2i_ASN1_OCTET_STRING(NULL,&p,max-p)) == NULL)
 188                         goto err;
 189                 break;
 190         case V_ASN1_OBJECT:
 191                 if ((ret->value.object=
 192                         d2i_ASN1_OBJECT(NULL,&p,max-p)) == NULL)
 193                         goto err;
 194                 break;
 195         case V_ASN1_PRINTABLESTRING:
 196                 if ((ret->value.printablestring=
 197                         d2i_ASN1_PRINTABLESTRING(NULL,&p,max-p)) == NULL)
 198                         goto err;
 199                 break;
 200         case V_ASN1_T61STRING:
 201                 if ((ret->value.t61string=
 202                         M_d2i_ASN1_T61STRING(NULL,&p,max-p)) == NULL)
 203                         goto err;
 204                 break;
 205         case V_ASN1_IA5STRING:
 206                 if ((ret->value.ia5string=
 207                         M_d2i_ASN1_IA5STRING(NULL,&p,max-p)) == NULL)
 208                         goto err;
 209                 break;
 210         case V_ASN1_GENERALSTRING:
 211                 if ((ret->value.generalstring=
 212                         M_d2i_ASN1_GENERALSTRING(NULL,&p,max-p)) == NULL)
 213                         goto err;
 214                 break;
 215         case V_ASN1_UNIVERSALSTRING:
 216                 if ((ret->value.universalstring=
 217                         M_d2i_ASN1_UNIVERSALSTRING(NULL,&p,max-p)) == NULL)
 218                         goto err;
 219                 break;
 220         case V_ASN1_BMPSTRING:
 221                 if ((ret->value.bmpstring=
 222                         M_d2i_ASN1_BMPSTRING(NULL,&p,max-p)) == NULL)
 223                         goto err;
 224                 break;
 225         case V_ASN1_UTCTIME:
 226                 if ((ret->value.utctime=
 227                         d2i_ASN1_UTCTIME(NULL,&p,max-p)) == NULL)
 228                         goto err;
 229                 break;
 230         case V_ASN1_GENERALIZEDTIME:
 231                 if ((ret->value.generalizedtime=
 232                         d2i_ASN1_GENERALIZEDTIME(NULL,&p,max-p)) == NULL)
 233                         goto err;
 234                 break;
 235         case V_ASN1_SET:
 236         case V_ASN1_SEQUENCE:
 237                 /* Sets and sequences are left complete */
 238                 if ((ret->value.set=ASN1_STRING_new()) == NULL) goto err;
 239                 ret->value.set->type=tag;
 240                 len+=(q-p);
 241                 if (!ASN1_STRING_set(ret->value.set,p,(int)len)) goto err;
 242                 p+=len;
 243                 break;
 244         default:
 245                 ASN1err(ASN1_F_D2I_ASN1_TYPE,ASN1_R_BAD_TYPE);
 246                 goto err;
 247                 }
 248
 249         ret->type=tag;
 250         if (a != NULL) (*a)=ret;
 251         *pp=p;
 252         return(ret);
 253 err:
 254         if ((ret != NULL) && ((a == NULL) || (*a != ret))) ASN1_TYPE_free(ret);
 255         return(NULL);
 256         }
 257
 258 ASN1_TYPE *ASN1_TYPE_new()
 259         {
 260         ASN1_TYPE *ret=NULL;
 261         ASN1_CTX c;
 262
 263         M_ASN1_New_Malloc(ret,ASN1_TYPE);
 264         ret->type= -1;
 265         ret->value.ptr=NULL;
 266         return(ret);
 267         M_ASN1_New_Error(ASN1_F_ASN1_TYPE_NEW);
 268         }
 269
 270 void ASN1_TYPE_free(a)
 271 ASN1_TYPE *a;
 272         {
 273         if (a == NULL) return;
 274         ASN1_TYPE_component_free(a);
 275         Free((char *)(char *)a);
 276         }
 277
 278 int ASN1_TYPE_get(a)
 279 ASN1_TYPE *a;
 280         {
 281         if (a->value.ptr != NULL)
 282                 return(a->type);
 283         else
 284                 return(0);
 285         }
 286
 287 void ASN1_TYPE_set(a,type,value)
 288 ASN1_TYPE *a;
 289 int type;
 290 char *value;
 291         {
 292         if (a->value.ptr != NULL)
 293                 ASN1_TYPE_component_free(a);
 294         a->type=type;
 295         a->value.ptr=value;
 296         }
 297
 298 static void ASN1_TYPE_component_free(a)
 299 ASN1_TYPE *a;
 300         {
 301         if (a == NULL) return;
 302
 303         if (a->value.ptr != NULL)
 304                 {
 305                 switch (a->type)
 306                         {
 307                 case V_ASN1_OBJECT:
 308                         ASN1_OBJECT_free(a->value.object);
 309                         break;
 310                 case V_ASN1_INTEGER:
 311                 case V_ASN1_NEG_INTEGER:
 312                 case V_ASN1_BIT_STRING:
 313                 case V_ASN1_OCTET_STRING:
 314                 case V_ASN1_SEQUENCE:
 315                 case V_ASN1_SET:
 316                 case V_ASN1_NUMERICSTRING:
 317                 case V_ASN1_PRINTABLESTRING:
 318                 case V_ASN1_T61STRING:
 319                 case V_ASN1_VIDEOTEXSTRING:
 320                 case V_ASN1_IA5STRING:
 321                 case V_ASN1_UTCTIME:
 322                 case V_ASN1_GENERALIZEDTIME:
 323                 case V_ASN1_GRAPHICSTRING:
 324                 case V_ASN1_VISIBLESTRING:
 325                 case V_ASN1_GENERALSTRING:
 326                 case V_ASN1_UNIVERSALSTRING:
 327                 case V_ASN1_BMPSTRING:
 328                         ASN1_STRING_free((ASN1_STRING *)a->value.ptr);
 329                         break;
 330                 default:
 331                         /* MEMORY LEAK */
 332                         break;
 333                         }
 334                 a->type=0;
 335                 a->value.ptr=NULL;
 336                 }
 337         }
 338