1/* tasn_new.c */ 2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2000. 4 */ 5/* ==================================================================== 6 * Copyright (c) 2000-2004 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59 60#include <stddef.h> 61#include <stdio.h> 62#include <stdlib.h> 63#include <time.h> 64 65#if 1 66#include "cs-asn1.h" 67#include "cs-objects.h" 68#include "cs-err.h" 69#include "cs-asn1t.h" 70 71#else 72 73#include <openssl/asn1.h> 74#include <openssl/objects.h> 75#include <openssl/err.h> 76#include <openssl/asn1t.h> 77#endif 78 79#include <string.h> 80 81static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, 82 int combine); 83static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it); 84static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt); 85void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it); 86 87ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it) 88 { 89 ASN1_VALUE *ret = NULL; 90 if (ASN1_item_ex_new(&ret, it) > 0) 91 return ret; 92 return NULL; 93 } 94 95/* Allocate an ASN1 structure */ 96 97int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it) 98 { 99 return asn1_item_ex_combine_new(pval, it, 0); 100 } 101 102static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, 103 int combine) 104 { 105 const ASN1_TEMPLATE *tt = NULL; 106 const ASN1_COMPAT_FUNCS *cf; 107 const ASN1_EXTERN_FUNCS *ef; 108 const ASN1_AUX *aux = it->funcs; 109 ASN1_aux_cb *asn1_cb; 110 ASN1_VALUE **pseqval; 111 int i; 112 if (aux && aux->asn1_cb) 113 asn1_cb = aux->asn1_cb; 114 else 115 asn1_cb = 0; 116 117 if (!combine) *pval = NULL; 118 119#ifdef CRYPTO_MDEBUG 120 if (it->sname) 121 CRYPTO_push_info(it->sname); 122#endif 123 124 switch(it->itype) 125 { 126 127 case ASN1_ITYPE_EXTERN: 128 ef = it->funcs; 129 if (ef && ef->asn1_ex_new) 130 { 131 if (!ef->asn1_ex_new(pval, it)) 132 goto memerr; 133 } 134 break; 135 136 case ASN1_ITYPE_COMPAT: 137 cf = it->funcs; 138 if (cf && cf->asn1_new) { 139 *pval = cf->asn1_new(); 140 if (!*pval) 141 goto memerr; 142 } 143 break; 144 145 case ASN1_ITYPE_PRIMITIVE: 146 if (it->templates) 147 { 148 if (!ASN1_template_new(pval, it->templates)) 149 goto memerr; 150 } 151 else if (!ASN1_primitive_new(pval, it)) 152 goto memerr; 153 break; 154 155 case ASN1_ITYPE_MSTRING: 156 if (!ASN1_primitive_new(pval, it)) 157 goto memerr; 158 break; 159 160 case ASN1_ITYPE_CHOICE: 161 if (asn1_cb) 162 { 163 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it); 164 if (!i) 165 goto auxerr; 166 if (i==2) 167 { 168#ifdef CRYPTO_MDEBUG 169 if (it->sname) 170 CRYPTO_pop_info(); 171#endif 172 return 1; 173 } 174 } 175 if (!combine) 176 { 177 *pval = malloc(it->size); 178 if (!*pval) 179 goto memerr; 180 memset(*pval, 0, it->size); 181 } 182 asn1_set_choice_selector(pval, -1, it); 183 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it)) 184 goto auxerr; 185 break; 186 187 case ASN1_ITYPE_NDEF_SEQUENCE: 188 case ASN1_ITYPE_SEQUENCE: 189 if (asn1_cb) 190 { 191 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it); 192 if (!i) 193 goto auxerr; 194 if (i==2) 195 { 196#ifdef CRYPTO_MDEBUG 197 if (it->sname) 198 CRYPTO_pop_info(); 199#endif 200 return 1; 201 } 202 } 203 if (!combine) 204 { 205 *pval = malloc(it->size); 206 if (!*pval) 207 goto memerr; 208 memset(*pval, 0, it->size); 209 asn1_do_lock(pval, 0, it); 210 asn1_enc_init(pval, it); 211 } 212 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) 213 { 214 pseqval = asn1_get_field_ptr(pval, tt); 215 if (!ASN1_template_new(pseqval, tt)) 216 goto memerr; 217 } 218 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it)) 219 goto auxerr; 220 break; 221 } 222#ifdef CRYPTO_MDEBUG 223 if (it->sname) CRYPTO_pop_info(); 224#endif 225 return 1; 226 227 memerr: 228 /* ASN1err(ASN1_F_ASN1_ITEM_EX_COMBINE_NEW, ERR_R_MALLOC_FAILURE); */ 229#ifdef CRYPTO_MDEBUG 230 if (it->sname) CRYPTO_pop_info(); 231#endif 232 return 0; 233 234 auxerr: 235 /* ASN1err(ASN1_F_ASN1_ITEM_EX_COMBINE_NEW, ASN1_R_AUX_ERROR); */ 236 ASN1_item_ex_free(pval, it); 237#ifdef CRYPTO_MDEBUG 238 if (it->sname) CRYPTO_pop_info(); 239#endif 240 return 0; 241 242 } 243 244static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) 245 { 246 const ASN1_EXTERN_FUNCS *ef; 247 248 switch(it->itype) 249 { 250 251 case ASN1_ITYPE_EXTERN: 252 ef = it->funcs; 253 if (ef && ef->asn1_ex_clear) 254 ef->asn1_ex_clear(pval, it); 255 else *pval = NULL; 256 break; 257 258 259 case ASN1_ITYPE_PRIMITIVE: 260 if (it->templates) 261 asn1_template_clear(pval, it->templates); 262 else 263 asn1_primitive_clear(pval, it); 264 break; 265 266 case ASN1_ITYPE_MSTRING: 267 asn1_primitive_clear(pval, it); 268 break; 269 270 case ASN1_ITYPE_COMPAT: 271 case ASN1_ITYPE_CHOICE: 272 case ASN1_ITYPE_SEQUENCE: 273 case ASN1_ITYPE_NDEF_SEQUENCE: 274 *pval = NULL; 275 break; 276 } 277 } 278 279 280int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) 281 { 282 const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item); 283 int ret; 284 if (tt->flags & ASN1_TFLG_OPTIONAL) 285 { 286 asn1_template_clear(pval, tt); 287 return 1; 288 } 289 /* If ANY DEFINED BY nothing to do */ 290 291 if (tt->flags & ASN1_TFLG_ADB_MASK) 292 { 293 *pval = NULL; 294 return 1; 295 } 296#ifdef CRYPTO_MDEBUG 297 if (tt->field_name) 298 CRYPTO_push_info(tt->field_name); 299#endif 300 /* If SET OF or SEQUENCE OF, its a STACK */ 301 if (tt->flags & ASN1_TFLG_SK_MASK) 302 { 303 STACK_OF(ASN1_VALUE) *skval; 304 skval = sk_ASN1_VALUE_new_null(); 305 if (!skval) 306 { 307 /* ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE); */ 308 ret = 0; 309 goto done; 310 } 311 *pval = (ASN1_VALUE *)skval; 312 ret = 1; 313 goto done; 314 } 315 /* Otherwise pass it back to the item routine */ 316 ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE); 317 done: 318#ifdef CRYPTO_MDEBUG 319 if (it->sname) 320 CRYPTO_pop_info(); 321#endif 322 return ret; 323 } 324 325static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) 326 { 327 /* If ADB or STACK just NULL the field */ 328 if (tt->flags & (ASN1_TFLG_ADB_MASK|ASN1_TFLG_SK_MASK)) 329 *pval = NULL; 330 else 331 asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item)); 332 } 333 334 335/* NB: could probably combine most of the real XXX_new() behaviour and junk 336 * all the old functions. 337 */ 338 339int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it) 340 { 341 ASN1_TYPE *typ; 342 int utype; 343 344 if (it && it->funcs) 345 { 346 const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; 347 if (pf->prim_new) 348 return pf->prim_new(pval, it); 349 } 350 351 if (!it || (it->itype == ASN1_ITYPE_MSTRING)) 352 utype = -1; 353 else 354 utype = it->utype; 355 switch(utype) 356 { 357 case V_ASN1_OBJECT: 358 *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef); 359 return 1; 360 361 case V_ASN1_BOOLEAN: 362 if (it) 363 *(ASN1_BOOLEAN *)pval = it->size; 364 else 365 *(ASN1_BOOLEAN *)pval = -1; 366 return 1; 367 368 case V_ASN1_NULL: 369 *pval = (ASN1_VALUE *)1; 370 return 1; 371 372 case V_ASN1_ANY: 373 typ = malloc(sizeof(ASN1_TYPE)); 374 if (!typ) 375 return 0; 376 typ->value.ptr = NULL; 377 typ->type = -1; 378 *pval = (ASN1_VALUE *)typ; 379 break; 380 381 default: 382 *pval = (ASN1_VALUE *)ASN1_STRING_type_new(utype); 383 break; 384 } 385 if (*pval) 386 return 1; 387 return 0; 388 } 389 390void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it) 391 { 392 int utype; 393 if (it && it->funcs) 394 { 395 const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; 396 if (pf->prim_clear) 397 pf->prim_clear(pval, it); 398 else 399 *pval = NULL; 400 return; 401 } 402 if (!it || (it->itype == ASN1_ITYPE_MSTRING)) 403 utype = -1; 404 else 405 utype = it->utype; 406 if (utype == V_ASN1_BOOLEAN) 407 *(ASN1_BOOLEAN *)pval = it->size; 408 else *pval = NULL; 409 } 410