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 <stdlib.h> 61#include <string.h> 62#include <time.h> 63#include <limits.h> 64 65#if 0 66#include "cryptlib.h" 67#include <openssl/buffer.h> 68#include <openssl/asn1.h> 69#include <openssl/objects.h> 70#include <openssl/bn.h> 71#else 72#include "cs-buf.h" 73#include "cs-asn1.h" 74#include "cs-objects.h" 75#include "cs-bn.h" 76#endif 77 78int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp) 79 { 80 unsigned char *p; 81 int objsize; 82 83 if ((a == NULL) || (a->data == NULL)) return(0); 84 85 objsize = ASN1_object_size(0,a->length,V_ASN1_OBJECT); 86 if (pp == NULL) return objsize; 87 88 p= *pp; 89 ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL); 90 memcpy(p,a->data,a->length); 91 p+=a->length; 92 93 *pp=p; 94 return(objsize); 95 } 96 97int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num) 98 { 99 int i,first,len=0,c, use_bn; 100 char ftmp[24], *tmp = ftmp; 101 int tmpsize = sizeof ftmp; 102 const char *p; 103 unsigned long l; 104 BIGNUM *bl = NULL; 105 106 if (num == 0) 107 return(0); 108 else if (num == -1) 109 num=strlen(buf); 110 111 p=buf; 112 c= *(p++); 113 num--; 114 if ((c >= '0') && (c <= '2')) 115 { 116 first= c-'0'; 117 } 118 else 119 { 120 /* ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE); */ 121 goto err; 122 } 123 124 if (num <= 0) 125 { 126 /* ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER); */ 127 goto err; 128 } 129 c= *(p++); 130 num--; 131 for (;;) 132 { 133 if (num <= 0) break; 134 if ((c != '.') && (c != ' ')) 135 { 136 /* ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR); */ 137 goto err; 138 } 139 l=0; 140 use_bn = 0; 141 for (;;) 142 { 143 if (num <= 0) break; 144 num--; 145 c= *(p++); 146 if ((c == ' ') || (c == '.')) 147 break; 148 if ((c < '0') || (c > '9')) 149 { 150 /* ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT); */ 151 goto err; 152 } 153 if (!use_bn && l > (ULONG_MAX / 10L)) 154 { 155 use_bn = 1; 156 if (!bl) 157 bl = BN_new(); 158 if (!bl || !BN_set_word(bl, l)) 159 goto err; 160 } 161 if (use_bn) 162 { 163 if (!BN_mul_word(bl, 10L) 164 || !BN_add_word(bl, c-'0')) 165 goto err; 166 } 167 else 168 l=l*10L+(long)(c-'0'); 169 } 170 if (len == 0) 171 { 172 if ((first < 2) && (l >= 40)) 173 { 174 /* ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE); */ 175 goto err; 176 } 177 if (use_bn) 178 { 179 if (!BN_add_word(bl, first * 40)) 180 goto err; 181 } 182 else 183 l+=(long)first*40; 184 } 185 i=0; 186 if (use_bn) 187 { 188 int blsize; 189 blsize = BN_num_bits(bl); 190 blsize = (blsize + 6)/7; 191 if (blsize > tmpsize) 192 { 193 if (tmp != ftmp) 194 free(tmp); 195 tmpsize = blsize + 32; 196 tmp = malloc(tmpsize); 197 if (!tmp) 198 goto err; 199 } 200 while(blsize--) 201 tmp[i++] = (unsigned char)BN_div_word(bl, 0x80L); 202 } 203 else 204 { 205 206 for (;;) 207 { 208 tmp[i++]=(unsigned char)l&0x7f; 209 l>>=7L; 210 if (l == 0L) break; 211 } 212 213 } 214 if (out != NULL) 215 { 216 if (len+i > olen) 217 { 218 /* ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO_SMALL); */ 219 goto err; 220 } 221 while (--i > 0) 222 out[len++]=tmp[i]|0x80; 223 out[len++]=tmp[0]; 224 } 225 else 226 len+=i; 227 } 228 if (tmp != ftmp) 229 free(tmp); 230 if (bl) 231 BN_free(bl); 232 return(len); 233err: 234 if (tmp != ftmp) 235 free(tmp); 236 if (bl) 237 BN_free(bl); 238 return(0); 239 } 240 241int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a) 242{ 243 return OBJ_obj2txt(buf, buf_len, a, 0); 244} 245 246int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a) 247 { 248 char buf[80], *p = buf; 249 int i; 250 251 if ((a == NULL) || (a->data == NULL)) 252 return(BIO_write(bp,"NULL",4)); 253 i=i2t_ASN1_OBJECT(buf,sizeof buf,a); 254 if (i > (int)(sizeof(buf) - 1)) 255 { 256 p = malloc(i + 1); 257 if (!p) 258 return -1; 259 i2t_ASN1_OBJECT(p,i + 1,a); 260 } 261 if (i <= 0) 262 return BIO_write(bp, "<INVALID>", 9); 263 BIO_write(bp,p,i); 264 if (p != buf) 265 free(p); 266 return(i); 267 } 268 269ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp, 270 long length) 271{ 272 const unsigned char *p; 273 long len; 274 int tag,xclass; 275 int inf,i; 276 ASN1_OBJECT *ret = NULL; 277 p= *pp; 278 inf=ASN1_get_object(&p,&len,&tag,&xclass,length); 279 if (inf & 0x80) 280 { 281 i=ASN1_R_BAD_OBJECT_HEADER; 282 goto err; 283 } 284 285 if (tag != V_ASN1_OBJECT) 286 { 287 i=ASN1_R_EXPECTING_AN_OBJECT; 288 goto err; 289 } 290 ret = c2i_ASN1_OBJECT(a, &p, len); 291 if(ret) *pp = p; 292 return ret; 293err: 294 /* ASN1err(ASN1_F_D2I_ASN1_OBJECT,i); */ 295 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 296 ASN1_OBJECT_free(ret); 297 return(NULL); 298} 299ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp, 300 long len) 301 { 302 ASN1_OBJECT *ret=NULL; 303 const unsigned char *p; 304 int i; 305 /* Sanity check OID encoding: can't have leading 0x80 in 306 * subidentifiers, see: X.690 8.19.2 307 */ 308 for (i = 0, p = *pp + 1; i < len - 1; i++, p++) 309 { 310 if (*p == 0x80 && (!i || !(p[-1] & 0x80))) 311 { 312 /* ASN1err(ASN1_F_C2I_ASN1_OBJECT,ASN1_R_INVALID_OBJECT_ENCODING); */ 313 return NULL; 314 } 315 } 316 317 /* only the ASN1_OBJECTs from the 'table' will have values 318 * for ->sn or ->ln */ 319 if ((a == NULL) || ((*a) == NULL) || 320 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) 321 { 322 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL); 323 } 324 else ret=(*a); 325 326 p= *pp; 327 if ((ret->data == NULL) || (ret->length < len)) 328 { 329 if (ret->data != NULL) free(ret->data); 330 ret->data=(unsigned char *)malloc(len ? (int)len : 1); 331 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA; 332 if (ret->data == NULL) 333 { /* i=ERR_R_MALLOC_FAILURE; */ i=-1; goto err; } 334 } 335 memcpy(ret->data,p,(int)len); 336 ret->length=(int)len; 337 ret->sn=NULL; 338 ret->ln=NULL; 339 /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */ 340 p+=len; 341 342 if (a != NULL) (*a)=ret; 343 *pp=p; 344 return(ret); 345err: 346 /* ASN1err(ASN1_F_C2I_ASN1_OBJECT,i); */ 347 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 348 ASN1_OBJECT_free(ret); 349 return(NULL); 350 } 351 352ASN1_OBJECT *ASN1_OBJECT_new(void) 353 { 354 ASN1_OBJECT *ret; 355 356 ret=(ASN1_OBJECT *)malloc(sizeof(ASN1_OBJECT)); 357 if (ret == NULL) 358 { 359 /* ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE); */ 360 return(NULL); 361 } 362 ret->length=0; 363 ret->data=NULL; 364 ret->nid=0; 365 ret->sn=NULL; 366 ret->ln=NULL; 367 ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; 368 return(ret); 369 } 370 371void ASN1_OBJECT_free(ASN1_OBJECT *a) 372 { 373 if (a == NULL) return; 374 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) 375 { 376#ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause memory leaks */ 377 if (a->sn != NULL) free((void *)a->sn); 378 if (a->ln != NULL) free((void *)a->ln); 379#endif 380 a->sn=a->ln=NULL; 381 } 382 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) 383 { 384 if (a->data != NULL) free(a->data); 385 a->data=NULL; 386 a->length=0; 387 } 388 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC) 389 free(a); 390 } 391 392ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len, 393 const char *sn, const char *ln) 394 { 395 ASN1_OBJECT o; 396 397 o.sn=sn; 398 o.ln=ln; 399 o.data=data; 400 o.nid=nid; 401 o.length=len; 402 o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS| 403 ASN1_OBJECT_FLAG_DYNAMIC_DATA; 404 return(OBJ_dup(&o)); 405 } 406 407IMPLEMENT_STACK_OF(ASN1_OBJECT) 408IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT) 409