1 /* $OpenBSD: obj_dat.c,v 1.88 2024/03/02 09:49:45 tb Exp $ */ 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 <ctype.h> 60 #include <limits.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 65 #include <openssl/opensslconf.h> 66 67 #include <openssl/asn1.h> 68 #include <openssl/bn.h> 69 #include <openssl/err.h> 70 #include <openssl/lhash.h> 71 #include <openssl/objects.h> 72 73 #include "asn1_local.h" 74 75 /* obj_dat.h is generated from objects.h by obj_dat.pl */ 76 #include "obj_dat.h" 77 78 #define ADDED_DATA 0 79 #define ADDED_SNAME 1 80 #define ADDED_LNAME 2 81 #define ADDED_NID 3 82 83 typedef struct added_obj_st { 84 int type; 85 ASN1_OBJECT *obj; 86 } ADDED_OBJ; 87 DECLARE_LHASH_OF(ADDED_OBJ); 88 89 static int new_nid = NUM_NID; 90 static LHASH_OF(ADDED_OBJ) *added = NULL; 91 92 static unsigned long 93 added_obj_hash(const ADDED_OBJ *ca) 94 { 95 const ASN1_OBJECT *a; 96 int i; 97 unsigned long ret = 0; 98 unsigned char *p; 99 100 a = ca->obj; 101 switch (ca->type) { 102 case ADDED_DATA: 103 ret = a->length << 20L; 104 p = (unsigned char *)a->data; 105 for (i = 0; i < a->length; i++) 106 ret ^= p[i] << ((i * 3) % 24); 107 break; 108 case ADDED_SNAME: 109 ret = lh_strhash(a->sn); 110 break; 111 case ADDED_LNAME: 112 ret = lh_strhash(a->ln); 113 break; 114 case ADDED_NID: 115 ret = a->nid; 116 break; 117 default: 118 return 0; 119 } 120 ret &= 0x3fffffffL; 121 ret |= ca->type << 30L; 122 return (ret); 123 } 124 static IMPLEMENT_LHASH_HASH_FN(added_obj, ADDED_OBJ) 125 126 static int 127 added_obj_cmp(const ADDED_OBJ *ca, const ADDED_OBJ *cb) 128 { 129 const ASN1_OBJECT *a, *b; 130 int cmp; 131 132 if ((cmp = ca->type - cb->type) != 0) 133 return cmp; 134 135 a = ca->obj; 136 b = cb->obj; 137 switch (ca->type) { 138 case ADDED_DATA: 139 return OBJ_cmp(a, b); 140 case ADDED_SNAME: 141 if (a->sn == NULL) 142 return -1; 143 if (b->sn == NULL) 144 return 1; 145 return strcmp(a->sn, b->sn); 146 case ADDED_LNAME: 147 if (a->ln == NULL) 148 return -1; 149 if (b->ln == NULL) 150 return 1; 151 return strcmp(a->ln, b->ln); 152 case ADDED_NID: 153 return a->nid - b->nid; 154 default: 155 return 0; 156 } 157 } 158 static IMPLEMENT_LHASH_COMP_FN(added_obj, ADDED_OBJ) 159 160 static void 161 cleanup1_doall(ADDED_OBJ *a) 162 { 163 a->obj->nid = 0; 164 a->obj->flags |= ASN1_OBJECT_FLAG_DYNAMIC | 165 ASN1_OBJECT_FLAG_DYNAMIC_STRINGS | 166 ASN1_OBJECT_FLAG_DYNAMIC_DATA; 167 } 168 169 static void cleanup2_doall(ADDED_OBJ *a) 170 { 171 a->obj->nid++; 172 } 173 174 static void 175 cleanup3_doall(ADDED_OBJ *a) 176 { 177 if (--a->obj->nid == 0) 178 ASN1_OBJECT_free(a->obj); 179 free(a); 180 } 181 182 static IMPLEMENT_LHASH_DOALL_FN(cleanup1, ADDED_OBJ) 183 static IMPLEMENT_LHASH_DOALL_FN(cleanup2, ADDED_OBJ) 184 static IMPLEMENT_LHASH_DOALL_FN(cleanup3, ADDED_OBJ) 185 186 void 187 OBJ_cleanup(void) 188 { 189 if (added == NULL) 190 return; 191 192 lh_ADDED_OBJ_doall(added, LHASH_DOALL_FN(cleanup1)); /* zero counters */ 193 lh_ADDED_OBJ_doall(added, LHASH_DOALL_FN(cleanup2)); /* set counters */ 194 lh_ADDED_OBJ_doall(added, LHASH_DOALL_FN(cleanup3)); /* free objects */ 195 lh_ADDED_OBJ_free(added); 196 added = NULL; 197 } 198 LCRYPTO_ALIAS(OBJ_cleanup); 199 200 int 201 OBJ_new_nid(int num) 202 { 203 int i; 204 205 i = new_nid; 206 new_nid += num; 207 return (i); 208 } 209 LCRYPTO_ALIAS(OBJ_new_nid); 210 211 static int 212 OBJ_add_object(const ASN1_OBJECT *obj) 213 { 214 ASN1_OBJECT *o = NULL; 215 ADDED_OBJ *ao[4] = {NULL, NULL, NULL, NULL}, *aop; 216 int i; 217 218 if (added == NULL) 219 added = lh_ADDED_OBJ_new(); 220 if (added == NULL) 221 goto err; 222 if (obj == NULL || obj->nid == NID_undef) 223 goto err; 224 if ((o = OBJ_dup(obj)) == NULL) 225 goto err; 226 if (!(ao[ADDED_NID] = malloc(sizeof(ADDED_OBJ)))) 227 goto err2; 228 if ((o->length != 0) && (obj->data != NULL)) 229 if (!(ao[ADDED_DATA] = malloc(sizeof(ADDED_OBJ)))) 230 goto err2; 231 if (o->sn != NULL) 232 if (!(ao[ADDED_SNAME] = malloc(sizeof(ADDED_OBJ)))) 233 goto err2; 234 if (o->ln != NULL) 235 if (!(ao[ADDED_LNAME] = malloc(sizeof(ADDED_OBJ)))) 236 goto err2; 237 238 for (i = ADDED_DATA; i <= ADDED_NID; i++) { 239 if (ao[i] != NULL) { 240 ao[i]->type = i; 241 ao[i]->obj = o; 242 aop = lh_ADDED_OBJ_insert(added, ao[i]); 243 /* memory leak, but should not normally matter */ 244 free(aop); 245 } 246 } 247 o->flags &= ~(ASN1_OBJECT_FLAG_DYNAMIC | 248 ASN1_OBJECT_FLAG_DYNAMIC_STRINGS | 249 ASN1_OBJECT_FLAG_DYNAMIC_DATA); 250 251 return (o->nid); 252 253 err2: 254 OBJerror(ERR_R_MALLOC_FAILURE); 255 err: 256 for (i = ADDED_DATA; i <= ADDED_NID; i++) 257 free(ao[i]); 258 ASN1_OBJECT_free(o); 259 return (NID_undef); 260 } 261 262 ASN1_OBJECT * 263 OBJ_nid2obj(int nid) 264 { 265 if (nid >= 0 && nid < NUM_NID) { 266 if (nid == NID_undef || nid_objs[nid].nid != NID_undef) 267 return (ASN1_OBJECT *)&nid_objs[nid]; 268 269 goto unknown; 270 } 271 272 /* XXX - locking. */ 273 if (added != NULL) { 274 ASN1_OBJECT aobj = { 275 .nid = nid, 276 }; 277 ADDED_OBJ needle = { 278 .type = ADDED_NID, 279 .obj = &aobj, 280 }; 281 ADDED_OBJ *found; 282 283 if ((found = lh_ADDED_OBJ_retrieve(added, &needle)) != NULL) 284 return found->obj; 285 } 286 287 unknown: 288 OBJerror(OBJ_R_UNKNOWN_NID); 289 290 return NULL; 291 } 292 LCRYPTO_ALIAS(OBJ_nid2obj); 293 294 const char * 295 OBJ_nid2sn(int nid) 296 { 297 ASN1_OBJECT *aobj; 298 299 if ((aobj = OBJ_nid2obj(nid)) == NULL) 300 return NULL; 301 302 return aobj->sn; 303 } 304 LCRYPTO_ALIAS(OBJ_nid2sn); 305 306 const char * 307 OBJ_nid2ln(int nid) 308 { 309 ASN1_OBJECT *aobj; 310 311 if ((aobj = OBJ_nid2obj(nid)) == NULL) 312 return NULL; 313 314 return aobj->ln; 315 } 316 LCRYPTO_ALIAS(OBJ_nid2ln); 317 318 static int 319 obj_objs_cmp(const void *aobj, const void *b) 320 { 321 const unsigned int *nid = b; 322 323 OPENSSL_assert(*nid < NUM_NID); 324 325 return OBJ_cmp(aobj, &nid_objs[*nid]); 326 } 327 328 int 329 OBJ_obj2nid(const ASN1_OBJECT *aobj) 330 { 331 const unsigned int *nid; 332 333 if (aobj == NULL || aobj->length == 0) 334 return NID_undef; 335 336 if (aobj->nid != NID_undef) 337 return aobj->nid; 338 339 /* XXX - locking. OpenSSL 3 moved this after built-in object lookup. */ 340 if (added != NULL) { 341 ADDED_OBJ needle = { 342 .type = ADDED_DATA, 343 .obj = (ASN1_OBJECT *)aobj, 344 }; 345 ADDED_OBJ *found; 346 347 if ((found = lh_ADDED_OBJ_retrieve(added, &needle)) != NULL) 348 return found->obj->nid; 349 } 350 351 /* obj_objs holds built-in obj NIDs in ascending OBJ_cmp() order. */ 352 nid = bsearch(aobj, obj_objs, NUM_OBJ, sizeof(unsigned int), obj_objs_cmp); 353 if (nid != NULL) 354 return *nid; 355 356 return NID_undef; 357 } 358 LCRYPTO_ALIAS(OBJ_obj2nid); 359 360 static int 361 sn_objs_cmp(const void *sn, const void *b) 362 { 363 const unsigned int *nid = b; 364 365 OPENSSL_assert(*nid < NUM_NID); 366 367 return strcmp(sn, nid_objs[*nid].sn); 368 } 369 370 int 371 OBJ_sn2nid(const char *sn) 372 { 373 const unsigned int *nid; 374 375 /* XXX - locking. OpenSSL 3 moved this after built-in object lookup. */ 376 if (added != NULL) { 377 ASN1_OBJECT aobj = { 378 .sn = sn, 379 }; 380 ADDED_OBJ needle = { 381 .type = ADDED_SNAME, 382 .obj = &aobj, 383 }; 384 ADDED_OBJ *found; 385 386 if ((found = lh_ADDED_OBJ_retrieve(added, &needle)) != NULL) 387 return found->obj->nid; 388 } 389 390 /* sn_objs holds NIDs in ascending alphabetical order of SN. */ 391 nid = bsearch(sn, sn_objs, NUM_SN, sizeof(unsigned int), sn_objs_cmp); 392 if (nid != NULL) 393 return *nid; 394 395 return NID_undef; 396 } 397 LCRYPTO_ALIAS(OBJ_sn2nid); 398 399 static int 400 ln_objs_cmp(const void *ln, const void *b) 401 { 402 const unsigned int *nid = b; 403 404 OPENSSL_assert(*nid < NUM_NID); 405 406 return strcmp(ln, nid_objs[*nid].ln); 407 } 408 409 int 410 OBJ_ln2nid(const char *ln) 411 { 412 const unsigned int *nid; 413 414 /* XXX - locking. OpenSSL 3 moved this after built-in object lookup. */ 415 if (added != NULL) { 416 ASN1_OBJECT aobj = { 417 .ln = ln, 418 }; 419 ADDED_OBJ needle = { 420 .type = ADDED_LNAME, 421 .obj = &aobj, 422 }; 423 ADDED_OBJ *found; 424 425 if ((found = lh_ADDED_OBJ_retrieve(added, &needle)) != NULL) 426 return found->obj->nid; 427 } 428 429 /* ln_objs holds NIDs in ascending alphabetical order of LN. */ 430 nid = bsearch(ln, ln_objs, NUM_LN, sizeof(unsigned int), ln_objs_cmp); 431 if (nid != NULL) 432 return *nid; 433 434 return NID_undef; 435 } 436 LCRYPTO_ALIAS(OBJ_ln2nid); 437 438 /* Convert an object name into an ASN1_OBJECT 439 * if "noname" is not set then search for short and long names first. 440 * This will convert the "dotted" form into an object: unlike OBJ_txt2nid 441 * it can be used with any objects, not just registered ones. 442 */ 443 444 ASN1_OBJECT * 445 OBJ_txt2obj(const char *s, int no_name) 446 { 447 int nid; 448 449 if (!no_name) { 450 if ((nid = OBJ_sn2nid(s)) != NID_undef || 451 (nid = OBJ_ln2nid(s)) != NID_undef) 452 return OBJ_nid2obj(nid); 453 } 454 455 return t2i_ASN1_OBJECT_internal(s); 456 } 457 LCRYPTO_ALIAS(OBJ_txt2obj); 458 459 int 460 OBJ_obj2txt(char *buf, int buf_len, const ASN1_OBJECT *aobj, int no_name) 461 { 462 return i2t_ASN1_OBJECT_internal(aobj, buf, buf_len, no_name); 463 } 464 LCRYPTO_ALIAS(OBJ_obj2txt); 465 466 int 467 OBJ_txt2nid(const char *s) 468 { 469 ASN1_OBJECT *obj; 470 int nid; 471 472 obj = OBJ_txt2obj(s, 0); 473 nid = OBJ_obj2nid(obj); 474 ASN1_OBJECT_free(obj); 475 return nid; 476 } 477 LCRYPTO_ALIAS(OBJ_txt2nid); 478 479 int 480 OBJ_create_objects(BIO *in) 481 { 482 char buf[512]; 483 int i, num = 0; 484 char *o, *s, *l = NULL; 485 486 for (;;) { 487 s = o = NULL; 488 i = BIO_gets(in, buf, 512); 489 if (i <= 0) 490 return (num); 491 buf[i - 1] = '\0'; 492 if (!isalnum((unsigned char)buf[0])) 493 return (num); 494 o = s=buf; 495 while (isdigit((unsigned char)*s) || (*s == '.')) 496 s++; 497 if (*s != '\0') { 498 *(s++) = '\0'; 499 while (isspace((unsigned char)*s)) 500 s++; 501 if (*s == '\0') 502 s = NULL; 503 else { 504 l = s; 505 while ((*l != '\0') && 506 !isspace((unsigned char)*l)) 507 l++; 508 if (*l != '\0') { 509 *(l++) = '\0'; 510 while (isspace((unsigned char)*l)) 511 l++; 512 if (*l == '\0') 513 l = NULL; 514 } else 515 l = NULL; 516 } 517 } else 518 s = NULL; 519 if ((o == NULL) || (*o == '\0')) 520 return (num); 521 if (!OBJ_create(o, s, l)) 522 return (num); 523 num++; 524 } 525 /* return(num); */ 526 } 527 LCRYPTO_ALIAS(OBJ_create_objects); 528 529 int 530 OBJ_create(const char *oid, const char *sn, const char *ln) 531 { 532 ASN1_OBJECT *aobj = NULL; 533 unsigned char *buf = NULL; 534 int len, nid; 535 int ret = 0; 536 537 if ((len = a2d_ASN1_OBJECT(NULL, 0, oid, -1)) <= 0) 538 goto err; 539 540 if ((buf = calloc(1, len)) == NULL) { 541 OBJerror(ERR_R_MALLOC_FAILURE); 542 goto err; 543 } 544 545 if ((len = a2d_ASN1_OBJECT(buf, len, oid, -1)) == 0) 546 goto err; 547 548 nid = OBJ_new_nid(1); 549 if ((aobj = ASN1_OBJECT_create(nid, buf, len, sn, ln)) == NULL) 550 goto err; 551 552 ret = OBJ_add_object(aobj); 553 554 err: 555 ASN1_OBJECT_free(aobj); 556 free(buf); 557 558 return ret; 559 } 560 LCRYPTO_ALIAS(OBJ_create); 561 562 size_t 563 OBJ_length(const ASN1_OBJECT *obj) 564 { 565 if (obj == NULL) 566 return 0; 567 568 if (obj->length < 0) 569 return 0; 570 571 return obj->length; 572 } 573 LCRYPTO_ALIAS(OBJ_length); 574 575 const unsigned char * 576 OBJ_get0_data(const ASN1_OBJECT *obj) 577 { 578 if (obj == NULL) 579 return NULL; 580 581 return obj->data; 582 } 583 LCRYPTO_ALIAS(OBJ_get0_data); 584