crypto/asn1/a_object.c

   1 /* crypto/asn1/a_object.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 <openssl/buffer.h>
  62 #include <openssl/asn1.h>
  63 #include <openssl/objects.h>
  64
  65 int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp)
  66         {
  67         unsigned char *p;
  68
  69         if ((a == NULL) || (a->data == NULL)) return(0);
  70
  71         if (pp == NULL)
  72                 return(ASN1_object_size(0,a->length,V_ASN1_OBJECT));
  73
  74         p= *pp;
  75         ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL);
  76         memcpy(p,a->data,a->length);
  77         p+=a->length;
  78
  79         *pp=p;
  80         return(a->length);
  81         }
  82
  83 int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num)
  84         {
  85         int i,first,len=0,c;
  86         char tmp[24];
  87         const char *p;
  88         unsigned long l;
  89
  90         if (num == 0)
  91                 return(0);
  92         else if (num == -1)
  93                 num=strlen(buf);
  94
  95         p=buf;
  96         c= *(p++);
  97         num--;
  98         if ((c >= '0') && (c <= '2'))
  99                 {
 100                 first=(c-'0')*40;
 101                 }
 102         else
 103                 {
 104                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE);
 105                 goto err;
 106                 }
 107
 108         if (num <= 0)
 109                 {
 110                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER);
 111                 goto err;
 112                 }
 113         c= *(p++);
 114         num--;
 115         for (;;)
 116                 {
 117                 if (num <= 0) break;
 118                 if ((c != '.') && (c != ' '))
 119                         {
 120                         ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR);
 121                         goto err;
 122                         }
 123                 l=0;
 124                 for (;;)
 125                         {
 126                         if (num <= 0) break;
 127                         num--;
 128                         c= *(p++);
 129                         if ((c == ' ') || (c == '.'))
 130                                 break;
 131                         if ((c < '0') || (c > '9'))
 132                                 {
 133                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT);
 134                                 goto err;
 135                                 }
 136                         l=l*10L+(long)(c-'0');
 137                         }
 138                 if (len == 0)
 139                         {
 140                         if ((first < 2) && (l >= 40))
 141                                 {
 142                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE);
 143                                 goto err;
 144                                 }
 145                         l+=(long)first;
 146                         }
 147                 i=0;
 148                 for (;;)
 149                         {
 150                         tmp[i++]=(unsigned char)l&0x7f;
 151                         l>>=7L;
 152                         if (l == 0L) break;
 153                         }
 154                 if (out != NULL)
 155                         {
 156                         if (len+i > olen)
 157                                 {
 158                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO_SMALL);
 159                                 goto err;
 160                                 }
 161                         while (--i > 0)
 162                                 out[len++]=tmp[i]|0x80;
 163                         out[len++]=tmp[0];
 164                         }
 165                 else
 166                         len+=i;
 167                 }
 168         return(len);
 169 err:
 170         return(0);
 171         }
 172
 173 int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a)
 174         {
 175         int i,idx=0,n=0,len,nid;
 176         unsigned long l;
 177         unsigned char *p;
 178         const char *s;
 179         char tbuf[32];
 180
 181         if (buf_len <= 0) return(0);
 182
 183         if ((a == NULL) || (a->data == NULL))
 184                 {
 185                 buf[0]='\0';
 186                 return(0);
 187                 }
 188
 189         nid=OBJ_obj2nid(a);
 190         if (nid == NID_undef)
 191                 {
 192                 len=a->length;
 193                 p=a->data;
 194
 195                 idx=0;
 196                 l=0;
 197                 while (idx < a->length)
 198                         {
 199                         l|=(p[idx]&0x7f);
 200                         if (!(p[idx] & 0x80)) break;
 201                         l<<=7L;
 202                         idx++;
 203                         }
 204                 idx++;
 205                 i=(int)(l/40);
 206                 if (i > 2) i=2;
 207                 l-=(long)(i*40);
 208
 209                 sprintf(tbuf,"%d.%lu",i,l);
 210                 i=strlen(tbuf);
 211                 strncpy(buf,tbuf,buf_len);
 212                 buf_len-=i;
 213                 buf+=i;
 214                 n+=i;
 215
 216                 l=0;
 217                 for (; idx<len; idx++)
 218                         {
 219                         l|=p[idx]&0x7f;
 220                         if (!(p[idx] & 0x80))
 221                                 {
 222                                 sprintf(tbuf,".%lu",l);
 223                                 i=strlen(tbuf);
 224                                 if (buf_len > 0)
 225                                         strncpy(buf,tbuf,buf_len);
 226                                 buf_len-=i;
 227                                 buf+=i;
 228                                 n+=i;
 229                                 l=0;
 230                                 }
 231                         l<<=7L;
 232                         }
 233                 }
 234         else
 235                 {
 236                 s=OBJ_nid2ln(nid);
 237                 if (s == NULL)
 238                         s=OBJ_nid2sn(nid);
 239                 strncpy(buf,s,buf_len);
 240                 n=strlen(s);
 241                 }
 242         buf[buf_len-1]='\0';
 243         return(n);
 244         }
 245
 246 int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)
 247         {
 248         char buf[80];
 249         int i;
 250
 251         if ((a == NULL) || (a->data == NULL))
 252                 return(BIO_write(bp,"NULL",4));
 253         i=i2t_ASN1_OBJECT(buf,80,a);
 254         if (i > 80) i=80;
 255         BIO_write(bp,buf,i);
 256         return(i);
 257         }
 258
 259 ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, unsigned char **pp,
 260              long length)
 261         {
 262         ASN1_OBJECT *ret=NULL;
 263         unsigned char *p;
 264         long len;
 265         int tag,xclass;
 266         int inf,i;
 267
 268         /* only the ASN1_OBJECTs from the 'table' will have values
 269          * for ->sn or ->ln */
 270         if ((a == NULL) || ((*a) == NULL) ||
 271                 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC))
 272                 {
 273                 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL);
 274                 }
 275         else    ret=(*a);
 276
 277         p= *pp;
 278
 279         inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
 280         if (inf & 0x80)
 281                 {
 282                 i=ASN1_R_BAD_OBJECT_HEADER;
 283                 goto err;
 284                 }
 285
 286         if (tag != V_ASN1_OBJECT)
 287                 {
 288                 i=ASN1_R_EXPECTING_AN_OBJECT;
 289                 goto err;
 290                 }
 291         if ((ret->data == NULL) || (ret->length < len))
 292                 {
 293                 if (ret->data != NULL) Free((char *)ret->data);
 294                 ret->data=(unsigned char *)Malloc((int)len);
 295                 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA;
 296                 if (ret->data == NULL)
 297                         { i=ERR_R_MALLOC_FAILURE; goto err; }
 298                 }
 299         memcpy(ret->data,p,(int)len);
 300         ret->length=(int)len;
 301         ret->sn=NULL;
 302         ret->ln=NULL;
 303         /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
 304         p+=len;
 305
 306         if (a != NULL) (*a)=ret;
 307         *pp=p;
 308         return(ret);
 309 err:
 310         ASN1err(ASN1_F_D2I_ASN1_OBJECT,i);
 311         if ((ret != NULL) && ((a == NULL) || (*a != ret)))
 312                 ASN1_OBJECT_free(ret);
 313         return(NULL);
 314         }
 315
 316 ASN1_OBJECT *ASN1_OBJECT_new(void)
 317         {
 318         ASN1_OBJECT *ret;
 319
 320         ret=(ASN1_OBJECT *)Malloc(sizeof(ASN1_OBJECT));
 321         if (ret == NULL)
 322                 {
 323                 ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE);
 324                 return(NULL);
 325                 }
 326         ret->length=0;
 327         ret->data=NULL;
 328         ret->nid=0;
 329         ret->sn=NULL;
 330         ret->ln=NULL;
 331         ret->flags=ASN1_OBJECT_FLAG_DYNAMIC;
 332         return(ret);
 333         }
 334
 335 void ASN1_OBJECT_free(ASN1_OBJECT *a)
 336         {
 337         if (a == NULL) return;
 338         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS)
 339                 {
 340 #ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause mempory leaks */
 341                 if (a->sn != NULL) Free((void *)a->sn);
 342                 if (a->ln != NULL) Free((void *)a->ln);
 343 #endif
 344                 a->sn=a->ln=NULL;
 345                 }
 346         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA)
 347                 {
 348                 if (a->data != NULL) Free(a->data);
 349                 a->data=NULL;
 350                 a->length=0;
 351                 }
 352         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
 353                 Free(a);
 354         }
 355
 356 ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len,
 357              char *sn, char *ln)
 358         {
 359         ASN1_OBJECT o;
 360
 361         o.sn=sn;
 362         o.ln=ln;
 363         o.data=data;
 364         o.nid=nid;
 365         o.length=len;
 366         o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|
 367                 ASN1_OBJECT_FLAG_DYNAMIC_DATA;
 368         return(OBJ_dup(&o));
 369         }
 370
 371 IMPLEMENT_STACK_OF(ASN1_OBJECT)
 372 IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT)