crypto/openssl-0.9.7e/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         int objsize;
  69
  70         if ((a == NULL) || (a->data == NULL)) return(0);
  71
  72         objsize = ASN1_object_size(0,a->length,V_ASN1_OBJECT);
  73         if (pp == NULL) return objsize;
  74
  75         p= *pp;
  76         ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL);
  77         memcpy(p,a->data,a->length);
  78         p+=a->length;
  79
  80         *pp=p;
  81         return(objsize);
  82         }
  83
  84 int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num)
  85         {
  86         int i,first,len=0,c;
  87         char tmp[24];
  88         const char *p;
  89         unsigned long l;
  90
  91         if (num == 0)
  92                 return(0);
  93         else if (num == -1)
  94                 num=strlen(buf);
  95
  96         p=buf;
  97         c= *(p++);
  98         num--;
  99         if ((c >= '0') && (c <= '2'))
 100                 {
 101                 first=(c-'0')*40;
 102                 }
 103         else
 104                 {
 105                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE);
 106                 goto err;
 107                 }
 108
 109         if (num <= 0)
 110                 {
 111                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER);
 112                 goto err;
 113                 }
 114         c= *(p++);
 115         num--;
 116         for (;;)
 117                 {
 118                 if (num <= 0) break;
 119                 if ((c != '.') && (c != ' '))
 120                         {
 121                         ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR);
 122                         goto err;
 123                         }
 124                 l=0;
 125                 for (;;)
 126                         {
 127                         if (num <= 0) break;
 128                         num--;
 129                         c= *(p++);
 130                         if ((c == ' ') || (c == '.'))
 131                                 break;
 132                         if ((c < '0') || (c > '9'))
 133                                 {
 134                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT);
 135                                 goto err;
 136                                 }
 137                         l=l*10L+(long)(c-'0');
 138                         }
 139                 if (len == 0)
 140                         {
 141                         if ((first < 2) && (l >= 40))
 142                                 {
 143                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE);
 144                                 goto err;
 145                                 }
 146                         l+=(long)first;
 147                         }
 148                 i=0;
 149                 for (;;)
 150                         {
 151                         tmp[i++]=(unsigned char)l&0x7f;
 152                         l>>=7L;
 153                         if (l == 0L) break;
 154                         }
 155                 if (out != NULL)
 156                         {
 157                         if (len+i > olen)
 158                                 {
 159                                 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO_SMALL);
 160                                 goto err;
 161                                 }
 162                         while (--i > 0)
 163                                 out[len++]=tmp[i]|0x80;
 164                         out[len++]=tmp[0];
 165                         }
 166                 else
 167                         len+=i;
 168                 }
 169         return(len);
 170 err:
 171         return(0);
 172         }
 173
 174 int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a)
 175 {
 176         return OBJ_obj2txt(buf, buf_len, a, 0);
 177 }
 178
 179 int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)
 180         {
 181         char buf[80];
 182         int i;
 183
 184         if ((a == NULL) || (a->data == NULL))
 185                 return(BIO_write(bp,"NULL",4));
 186         i=i2t_ASN1_OBJECT(buf,sizeof buf,a);
 187         if (i > sizeof buf) i=sizeof buf;
 188         BIO_write(bp,buf,i);
 189         return(i);
 190         }
 191
 192 ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, unsigned char **pp,
 193              long length)
 194 {
 195         unsigned char *p;
 196         long len;
 197         int tag,xclass;
 198         int inf,i;
 199         ASN1_OBJECT *ret = NULL;
 200         p= *pp;
 201         inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
 202         if (inf & 0x80)
 203                 {
 204                 i=ASN1_R_BAD_OBJECT_HEADER;
 205                 goto err;
 206                 }
 207
 208         if (tag != V_ASN1_OBJECT)
 209                 {
 210                 i=ASN1_R_EXPECTING_AN_OBJECT;
 211                 goto err;
 212                 }
 213         ret = c2i_ASN1_OBJECT(a, &p, len);
 214         if(ret) *pp = p;
 215         return ret;
 216 err:
 217         ASN1err(ASN1_F_D2I_ASN1_OBJECT,i);
 218         if ((ret != NULL) && ((a == NULL) || (*a != ret)))
 219                 ASN1_OBJECT_free(ret);
 220         return(NULL);
 221 }
 222 ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, unsigned char **pp,
 223              long len)
 224         {
 225         ASN1_OBJECT *ret=NULL;
 226         unsigned char *p;
 227         int i;
 228
 229         /* only the ASN1_OBJECTs from the 'table' will have values
 230          * for ->sn or ->ln */
 231         if ((a == NULL) || ((*a) == NULL) ||
 232                 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC))
 233                 {
 234                 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL);
 235                 }
 236         else    ret=(*a);
 237
 238         p= *pp;
 239         if ((ret->data == NULL) || (ret->length < len))
 240                 {
 241                 if (ret->data != NULL) OPENSSL_free(ret->data);
 242                 ret->data=(unsigned char *)OPENSSL_malloc(len ? (int)len : 1);
 243                 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA;
 244                 if (ret->data == NULL)
 245                         { i=ERR_R_MALLOC_FAILURE; goto err; }
 246                 }
 247         memcpy(ret->data,p,(int)len);
 248         ret->length=(int)len;
 249         ret->sn=NULL;
 250         ret->ln=NULL;
 251         /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
 252         p+=len;
 253
 254         if (a != NULL) (*a)=ret;
 255         *pp=p;
 256         return(ret);
 257 err:
 258         ASN1err(ASN1_F_D2I_ASN1_OBJECT,i);
 259         if ((ret != NULL) && ((a == NULL) || (*a != ret)))
 260                 ASN1_OBJECT_free(ret);
 261         return(NULL);
 262         }
 263
 264 ASN1_OBJECT *ASN1_OBJECT_new(void)
 265         {
 266         ASN1_OBJECT *ret;
 267
 268         ret=(ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT));
 269         if (ret == NULL)
 270                 {
 271                 ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE);
 272                 return(NULL);
 273                 }
 274         ret->length=0;
 275         ret->data=NULL;
 276         ret->nid=0;
 277         ret->sn=NULL;
 278         ret->ln=NULL;
 279         ret->flags=ASN1_OBJECT_FLAG_DYNAMIC;
 280         return(ret);
 281         }
 282
 283 void ASN1_OBJECT_free(ASN1_OBJECT *a)
 284         {
 285         if (a == NULL) return;
 286         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS)
 287                 {
 288 #ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause memory leaks */
 289                 if (a->sn != NULL) OPENSSL_free((void *)a->sn);
 290                 if (a->ln != NULL) OPENSSL_free((void *)a->ln);
 291 #endif
 292                 a->sn=a->ln=NULL;
 293                 }
 294         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA)
 295                 {
 296                 if (a->data != NULL) OPENSSL_free(a->data);
 297                 a->data=NULL;
 298                 a->length=0;
 299                 }
 300         if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
 301                 OPENSSL_free(a);
 302         }
 303
 304 ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len,
 305              const char *sn, const char *ln)
 306         {
 307         ASN1_OBJECT o;
 308
 309         o.sn=sn;
 310         o.ln=ln;
 311         o.data=data;
 312         o.nid=nid;
 313         o.length=len;
 314         o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|
 315                 ASN1_OBJECT_FLAG_DYNAMIC_DATA;
 316         return(OBJ_dup(&o));
 317         }
 318
 319 IMPLEMENT_STACK_OF(ASN1_OBJECT)
 320 IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT)