crypto/asn1/a_object.c

   1 /* crypto/asn1/a_object.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 "buffer.h"
  62 #include "asn1.h"
  63 #include "objects.h"
  64
  65 /* ASN1err(ASN1_F_ASN1_OBJECT_NEW,ASN1_R_EXPECTING_AN_OBJECT);
  66  * ASN1err(ASN1_F_D2I_ASN1_OBJECT,ASN1_R_BAD_OBJECT_HEADER);
  67  * ASN1err(ASN1_F_I2A_ASN1_OBJECT,ASN1_R_BAD_OBJECT_HEADER);
  68  */
  69
  70 int i2d_ASN1_OBJECT(a, pp)
  71 ASN1_OBJECT *a;
  72 unsigned char **pp;
  73         {
  74         unsigned char *p;
  75
  76         if ((a == NULL) || (a->data == NULL)) return(0);
  77
  78         if (pp == NULL)
  79                 return(ASN1_object_size(0,a->length,V_ASN1_OBJECT));
  80
  81         p= *pp;
  82         ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL);
  83         memcpy(p,a->data,a->length);
  84         p+=a->length;
  85
  86         *pp=p;
  87         return(a->length);
  88         }
  89
  90 int a2d_ASN1_OBJECT(out,olen,buf,num)
  91 unsigned char *out;
  92 int olen;
  93 char *buf;
  94 int num;
  95         {
  96         int i,first,len=0,c;
  97         char tmp[24],*p;
  98         unsigned long l;
  99
 100         if (num == 0)
 101                 return(0);
 102         else if (num == -1)
 103                 num=strlen(buf);
 104
 105         p=buf;
 106         c= *(p++);
 107         num--;
 108         if ((c >= '0') && (c <= '2'))
 109                 {
 110                 first=(c-'0')*40;
 111                 }
 112         else
 113                 {
 114                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE);
 115                 goto err;
 116                 }
 117
 118         if (num <= 0)
 119                 {
 120                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER);
 121                 goto err;
 122                 }
 123         c= *(p++);
 124         num--;
 125         for (;;)
 126                 {
 127                 if (num <= 0) break;
 128                 if ((c != '.') && (c != ' '))
 129                         {
 130                         ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR);
 131                         goto err;
 132                         }
 133                 l=0;
 134                 for (;;)
 135                         {
 136                         if (num <= 0) break;
 137                         num--;
 138                         c= *(p++);
 139                         if ((c == ' ') || (c == '.'))
 140                                 break;
 141                         if ((c < '0') || (c > '9'))
 142                                 {
 143                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT);
 144                                 goto err;
 145                                 }
 146                         l=l*10L+(long)(c-'0');
 147                         }
 148                 if (len == 0)
 149                         {
 150                         if ((first < 2) && (l >= 40))
 151                                 {
 152                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE);
 153                                 goto err;
 154                                 }
 155                         l+=(long)first;
 156                         }
 157                 i=0;
 158                 for (;;)
 159                         {
 160                         tmp[i++]=(unsigned char)l&0x7f;
 161                         l>>=7L;
 162                         if (l == 0L) break;
 163                         }
 164                 if (out != NULL)
 165                         {
 166                         if (len+i > olen)
 167                                 {
 168                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO_SMALL);
 169                                 goto err;
 170                                 }
 171                         while (--i > 0)
 172                                 out[len++]=tmp[i]|0x80;
 173                         out[len++]=tmp[0];
 174                         }
 175                 else
 176                         len+=i;
 177                 }
 178         return(len);
 179 err:
 180         return(0);
 181         }
 182
 183 int i2a_ASN1_OBJECT(bp,a)
 184 BIO *bp;
 185 ASN1_OBJECT *a;
 186         {
 187         int j,i,idx=0,n=0,len,nid,reason=ERR_R_BUF_LIB;
 188         unsigned long l;
 189         unsigned char *p;
 190         char buf[20];
 191         char *s;
 192
 193         if ((a == NULL) || (a->data == NULL))
 194                 {
 195                 return(BIO_write(bp,"NULL",4));
 196                 }
 197
 198         nid=OBJ_obj2nid(a);
 199         if (nid == NID_undef)
 200                 {
 201                 len=a->length;
 202                 p=a->data;
 203
 204                 idx=0;
 205                 l=0;
 206                 while (idx < a->length)
 207                         {
 208                         l|=(p[idx]&0x7f);
 209                         if (!(p[idx] & 0x80)) break;
 210                         l<<=7L;
 211                         idx++;
 212                         }
 213                 idx++;
 214                 i=(int)(l/40);
 215                 if (i > 2) i=2;
 216                 l-=(long)(i*40);
 217
 218                 sprintf(buf,"%d.%ld",i,l);
 219                 i=strlen(buf);
 220                 if (BIO_write(bp,buf,i) != i)
 221                                 goto err;
 222                 n+=i;
 223
 224                 l=0;
 225                 for (; idx<len; idx++)
 226                         {
 227                         l|=p[idx]&0x7f;
 228                         if (!(p[idx] & 0x80))
 229                                 {
 230                                 sprintf(buf,".%ld",l);
 231                                 i=strlen(buf);
 232                                 if (BIO_write(bp,buf,i) != i) goto err;
 233                                 n+=i;
 234                                 l=0;
 235                                 }
 236                         l<<=7L;
 237                         }
 238                 }
 239         else
 240                 {
 241                 s=(char *)OBJ_nid2ln(nid);
 242                 if (s == NULL)
 243                         s=(char *)OBJ_nid2sn(nid);
 244                 j=strlen(s);
 245                 if (BIO_write(bp,s,j) != j) goto err;
 246                 n=j;
 247                 }
 248         return(n);
 249 err:
 250         ASN1err(ASN1_F_I2A_ASN1_OBJECT,reason);
 251         return(-1);
 252         }
 253
 254 ASN1_OBJECT *d2i_ASN1_OBJECT(a, pp, length)
 255 ASN1_OBJECT **a;
 256 unsigned char **pp;
 257 long length;
 258         {
 259         ASN1_OBJECT *ret=NULL;
 260         unsigned char *p;
 261         long len;
 262         int tag,xclass;
 263         int inf,i;
 264
 265         /* only the ASN1_OBJECTs from the 'table' will have values
 266          * for ->sn or ->ln */
 267         if ((a == NULL) || ((*a) == NULL) ||
 268                 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC))
 269                 {
 270                 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL);
 271                 }
 272         else    ret=(*a);
 273
 274         p= *pp;
 275
 276         inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
 277         if (inf & 0x80)
 278                 {
 279                 i=ASN1_R_BAD_OBJECT_HEADER;
 280                 goto err;
 281                 }
 282
 283         if (tag != V_ASN1_OBJECT)
 284                 {
 285                 i=ASN1_R_EXPECTING_AN_OBJECT;
 286                 goto err;
 287                 }
 288         if ((ret->data == NULL) || (ret->length < len))
 289                 {
 290                 if (ret->data != NULL) Free((char *)ret->data);
 291                 ret->data=(unsigned char *)Malloc((int)len);
 292                 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA;
 293                 if (ret->data == NULL)
 294                         { i=ERR_R_MALLOC_FAILURE; goto err; }
 295                 }
 296         memcpy(ret->data,p,(int)len);
 297         ret->length=(int)len;
 298         ret->sn=NULL;
 299         ret->ln=NULL;
 300         /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
 301         p+=len;
 302
 303         if (a != NULL) (*a)=ret;
 304         *pp=p;
 305         return(ret);
 306 err:
 307         ASN1err(ASN1_F_D2I_ASN1_OBJECT,i);
 308         if ((ret != NULL) && ((a == NULL) || (*a != ret)))
 309                 ASN1_OBJECT_free(ret);
 310         return(NULL);
 311         }
 312
 313 ASN1_OBJECT *ASN1_OBJECT_new()
 314         {
 315         ASN1_OBJECT *ret;
 316
 317         ret=(ASN1_OBJECT *)Malloc(sizeof(ASN1_OBJECT));
 318         if (ret == NULL)
 319                 {
 320                 ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE);
 321                 return(NULL);
 322                 }
 323         ret->length=0;
 324         ret->data=NULL;
 325         ret->nid=0;
 326         ret->sn=NULL;
 327         ret->ln=NULL;
 328         ret->flags=ASN1_OBJECT_FLAG_DYNAMIC;
 329         return(ret);
 330         }
 331
 332 void ASN1_OBJECT_free(a)
 333 ASN1_OBJECT *a;
 334         {
 335         if (a == NULL) return;
 336         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS)
 337                 {
 338                 if (a->sn != NULL) Free(a->sn);
 339                 if (a->ln != NULL) Free(a->ln);
 340                 a->sn=a->ln=NULL;
 341                 }
 342         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA)
 343                 {
 344                 if (a->data != NULL) Free(a->data);
 345                 a->data=NULL;
 346                 a->length=0;
 347                 }
 348         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
 349                 Free((char *)a);
 350         }
 351
 352 ASN1_OBJECT *ASN1_OBJECT_create(nid,data,len,sn,ln)
 353 int nid;
 354 unsigned char *data;
 355 int len;
 356 char *sn,*ln;
 357         {
 358         ASN1_OBJECT o;
 359
 360         o.sn=sn;
 361         o.ln=ln;
 362         o.data=data;
 363         o.nid=nid;
 364         o.length=len;
 365         o.flags=ASN1_OBJECT_FLAG_DYNAMIC|
 366                 ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|ASN1_OBJECT_FLAG_DYNAMIC_DATA;
 367         return(OBJ_dup(&o));
 368         }
 369