1 /* $OpenBSD: x509_lu.c,v 1.30 2018/08/24 19:21:09 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 <stdio.h> 60 61 #include <openssl/err.h> 62 #include <openssl/lhash.h> 63 #include <openssl/x509.h> 64 #include <openssl/x509v3.h> 65 #include "x509_lcl.h" 66 67 static void X509_OBJECT_dec_ref_count(X509_OBJECT *a); 68 69 X509_LOOKUP * 70 X509_LOOKUP_new(X509_LOOKUP_METHOD *method) 71 { 72 X509_LOOKUP *ret; 73 74 ret = malloc(sizeof(X509_LOOKUP)); 75 if (ret == NULL) 76 return NULL; 77 78 ret->init = 0; 79 ret->skip = 0; 80 ret->method = method; 81 ret->method_data = NULL; 82 ret->store_ctx = NULL; 83 if ((method->new_item != NULL) && !method->new_item(ret)) { 84 free(ret); 85 return NULL; 86 } 87 return ret; 88 } 89 90 void 91 X509_LOOKUP_free(X509_LOOKUP *ctx) 92 { 93 if (ctx == NULL) 94 return; 95 if ((ctx->method != NULL) && (ctx->method->free != NULL)) 96 (*ctx->method->free)(ctx); 97 free(ctx); 98 } 99 100 int 101 X509_LOOKUP_init(X509_LOOKUP *ctx) 102 { 103 if (ctx->method == NULL) 104 return 0; 105 if (ctx->method->init != NULL) 106 return ctx->method->init(ctx); 107 else 108 return 1; 109 } 110 111 int 112 X509_LOOKUP_shutdown(X509_LOOKUP *ctx) 113 { 114 if (ctx->method == NULL) 115 return 0; 116 if (ctx->method->shutdown != NULL) 117 return ctx->method->shutdown(ctx); 118 else 119 return 1; 120 } 121 122 int 123 X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl, 124 char **ret) 125 { 126 if (ctx->method == NULL) 127 return -1; 128 if (ctx->method->ctrl != NULL) 129 return ctx->method->ctrl(ctx, cmd, argc, argl, ret); 130 else 131 return 1; 132 } 133 134 int 135 X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name, 136 X509_OBJECT *ret) 137 { 138 if ((ctx->method == NULL) || (ctx->method->get_by_subject == NULL)) 139 return X509_LU_FAIL; 140 if (ctx->skip) 141 return 0; 142 return ctx->method->get_by_subject(ctx, type, name, ret); 143 } 144 145 int 146 X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name, 147 ASN1_INTEGER *serial, X509_OBJECT *ret) 148 { 149 if ((ctx->method == NULL) || 150 (ctx->method->get_by_issuer_serial == NULL)) 151 return X509_LU_FAIL; 152 return ctx->method->get_by_issuer_serial(ctx, type, name, serial, ret); 153 } 154 155 int 156 X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type, 157 const unsigned char *bytes, int len, X509_OBJECT *ret) 158 { 159 if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL)) 160 return X509_LU_FAIL; 161 return ctx->method->get_by_fingerprint(ctx, type, bytes, len, ret); 162 } 163 164 int 165 X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, const char *str, int len, 166 X509_OBJECT *ret) 167 { 168 if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL)) 169 return X509_LU_FAIL; 170 return ctx->method->get_by_alias(ctx, type, str, len, ret); 171 } 172 173 static int 174 x509_object_cmp(const X509_OBJECT * const *a, const X509_OBJECT * const *b) 175 { 176 int ret; 177 178 ret = ((*a)->type - (*b)->type); 179 if (ret) 180 return ret; 181 switch ((*a)->type) { 182 case X509_LU_X509: 183 ret = X509_subject_name_cmp((*a)->data.x509, (*b)->data.x509); 184 break; 185 case X509_LU_CRL: 186 ret = X509_CRL_cmp((*a)->data.crl, (*b)->data.crl); 187 break; 188 default: 189 /* abort(); */ 190 return 0; 191 } 192 return ret; 193 } 194 195 X509_STORE * 196 X509_STORE_new(void) 197 { 198 X509_STORE *ret; 199 200 if ((ret = malloc(sizeof(X509_STORE))) == NULL) 201 return NULL; 202 ret->objs = sk_X509_OBJECT_new(x509_object_cmp); 203 ret->cache = 1; 204 ret->get_cert_methods = sk_X509_LOOKUP_new_null(); 205 ret->verify = 0; 206 ret->verify_cb = 0; 207 208 if ((ret->param = X509_VERIFY_PARAM_new()) == NULL) 209 goto err; 210 211 ret->get_issuer = 0; 212 ret->check_issued = 0; 213 ret->check_revocation = 0; 214 ret->get_crl = 0; 215 ret->check_crl = 0; 216 ret->cert_crl = 0; 217 ret->lookup_certs = 0; 218 ret->lookup_crls = 0; 219 ret->cleanup = 0; 220 221 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data)) 222 goto err; 223 224 ret->references = 1; 225 return ret; 226 227 err: 228 X509_VERIFY_PARAM_free(ret->param); 229 sk_X509_LOOKUP_free(ret->get_cert_methods); 230 sk_X509_OBJECT_free(ret->objs); 231 free(ret); 232 return NULL; 233 } 234 235 static void 236 X509_OBJECT_free(X509_OBJECT *a) 237 { 238 X509_OBJECT_free_contents(a); 239 free(a); 240 } 241 242 void 243 X509_STORE_free(X509_STORE *vfy) 244 { 245 int i; 246 STACK_OF(X509_LOOKUP) *sk; 247 X509_LOOKUP *lu; 248 249 if (vfy == NULL) 250 return; 251 252 i = CRYPTO_add(&vfy->references, -1, CRYPTO_LOCK_X509_STORE); 253 if (i > 0) 254 return; 255 256 sk = vfy->get_cert_methods; 257 for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) { 258 lu = sk_X509_LOOKUP_value(sk, i); 259 X509_LOOKUP_shutdown(lu); 260 X509_LOOKUP_free(lu); 261 } 262 sk_X509_LOOKUP_free(sk); 263 sk_X509_OBJECT_pop_free(vfy->objs, X509_OBJECT_free); 264 265 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, vfy, &vfy->ex_data); 266 X509_VERIFY_PARAM_free(vfy->param); 267 free(vfy); 268 } 269 270 int 271 X509_STORE_up_ref(X509_STORE *x) 272 { 273 int refs = CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509_STORE); 274 return (refs > 1) ? 1 : 0; 275 } 276 277 X509_LOOKUP * 278 X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m) 279 { 280 int i; 281 STACK_OF(X509_LOOKUP) *sk; 282 X509_LOOKUP *lu; 283 284 sk = v->get_cert_methods; 285 for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) { 286 lu = sk_X509_LOOKUP_value(sk, i); 287 if (m == lu->method) { 288 return lu; 289 } 290 } 291 /* a new one */ 292 lu = X509_LOOKUP_new(m); 293 if (lu == NULL) 294 return NULL; 295 else { 296 lu->store_ctx = v; 297 if (sk_X509_LOOKUP_push(v->get_cert_methods, lu)) 298 return lu; 299 else { 300 X509_LOOKUP_free(lu); 301 return NULL; 302 } 303 } 304 } 305 306 int 307 X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name, 308 X509_OBJECT *ret) 309 { 310 X509_STORE *ctx = vs->ctx; 311 X509_LOOKUP *lu; 312 X509_OBJECT stmp, *tmp; 313 int i, j; 314 315 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); 316 tmp = X509_OBJECT_retrieve_by_subject(ctx->objs, type, name); 317 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 318 319 if (tmp == NULL || type == X509_LU_CRL) { 320 for (i = vs->current_method; 321 i < sk_X509_LOOKUP_num(ctx->get_cert_methods); i++) { 322 lu = sk_X509_LOOKUP_value(ctx->get_cert_methods, i); 323 j = X509_LOOKUP_by_subject(lu, type, name, &stmp); 324 if (j < 0) { 325 vs->current_method = j; 326 return j; 327 } else if (j) { 328 tmp = &stmp; 329 break; 330 } 331 } 332 vs->current_method = 0; 333 if (tmp == NULL) 334 return 0; 335 } 336 337 /* if (ret->data.ptr != NULL) 338 X509_OBJECT_free_contents(ret); */ 339 340 ret->type = tmp->type; 341 ret->data.ptr = tmp->data.ptr; 342 343 X509_OBJECT_up_ref_count(ret); 344 345 return 1; 346 } 347 348 int 349 X509_STORE_add_cert(X509_STORE *ctx, X509 *x) 350 { 351 X509_OBJECT *obj; 352 int ret = 1; 353 354 if (x == NULL) 355 return 0; 356 obj = malloc(sizeof(X509_OBJECT)); 357 if (obj == NULL) { 358 X509error(ERR_R_MALLOC_FAILURE); 359 return 0; 360 } 361 obj->type = X509_LU_X509; 362 obj->data.x509 = x; 363 364 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); 365 366 X509_OBJECT_up_ref_count(obj); 367 368 if (X509_OBJECT_retrieve_match(ctx->objs, obj)) { 369 X509error(X509_R_CERT_ALREADY_IN_HASH_TABLE); 370 ret = 0; 371 } else { 372 if (sk_X509_OBJECT_push(ctx->objs, obj) == 0) { 373 X509error(ERR_R_MALLOC_FAILURE); 374 ret = 0; 375 } 376 } 377 378 if (ret == 0) 379 X509_OBJECT_dec_ref_count(obj); 380 381 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 382 383 if (ret == 0) { 384 obj->data.x509 = NULL; /* owned by the caller */ 385 X509_OBJECT_free(obj); 386 } 387 388 return ret; 389 } 390 391 int 392 X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x) 393 { 394 X509_OBJECT *obj; 395 int ret = 1; 396 397 if (x == NULL) 398 return 0; 399 obj = malloc(sizeof(X509_OBJECT)); 400 if (obj == NULL) { 401 X509error(ERR_R_MALLOC_FAILURE); 402 return 0; 403 } 404 obj->type = X509_LU_CRL; 405 obj->data.crl = x; 406 407 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); 408 409 X509_OBJECT_up_ref_count(obj); 410 411 if (X509_OBJECT_retrieve_match(ctx->objs, obj)) { 412 X509error(X509_R_CERT_ALREADY_IN_HASH_TABLE); 413 ret = 0; 414 } else { 415 if (sk_X509_OBJECT_push(ctx->objs, obj) == 0) { 416 X509error(ERR_R_MALLOC_FAILURE); 417 ret = 0; 418 } 419 } 420 421 if (ret == 0) 422 X509_OBJECT_dec_ref_count(obj); 423 424 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 425 426 if (ret == 0) { 427 obj->data.crl = NULL; /* owned by the caller */ 428 X509_OBJECT_free(obj); 429 } 430 431 return ret; 432 } 433 434 static void 435 X509_OBJECT_dec_ref_count(X509_OBJECT *a) 436 { 437 switch (a->type) { 438 case X509_LU_X509: 439 CRYPTO_add(&a->data.x509->references, -1, CRYPTO_LOCK_X509); 440 break; 441 case X509_LU_CRL: 442 CRYPTO_add(&a->data.crl->references, -1, CRYPTO_LOCK_X509_CRL); 443 break; 444 } 445 } 446 447 int 448 X509_OBJECT_up_ref_count(X509_OBJECT *a) 449 { 450 switch (a->type) { 451 case X509_LU_X509: 452 return X509_up_ref(a->data.x509); 453 case X509_LU_CRL: 454 return X509_CRL_up_ref(a->data.crl); 455 } 456 return 1; 457 } 458 459 int 460 X509_OBJECT_get_type(const X509_OBJECT *a) 461 { 462 return a->type; 463 } 464 465 void 466 X509_OBJECT_free_contents(X509_OBJECT *a) 467 { 468 switch (a->type) { 469 case X509_LU_X509: 470 X509_free(a->data.x509); 471 break; 472 case X509_LU_CRL: 473 X509_CRL_free(a->data.crl); 474 break; 475 } 476 } 477 478 static int 479 x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, int type, X509_NAME *name, 480 int *pnmatch) 481 { 482 X509_OBJECT stmp; 483 X509 x509_s; 484 X509_CINF cinf_s; 485 X509_CRL crl_s; 486 X509_CRL_INFO crl_info_s; 487 int idx; 488 489 stmp.type = type; 490 switch (type) { 491 case X509_LU_X509: 492 stmp.data.x509 = &x509_s; 493 x509_s.cert_info = &cinf_s; 494 cinf_s.subject = name; 495 break; 496 case X509_LU_CRL: 497 stmp.data.crl = &crl_s; 498 crl_s.crl = &crl_info_s; 499 crl_info_s.issuer = name; 500 break; 501 default: 502 /* abort(); */ 503 return -1; 504 } 505 506 idx = sk_X509_OBJECT_find(h, &stmp); 507 if (idx >= 0 && pnmatch) { 508 int tidx; 509 const X509_OBJECT *tobj, *pstmp; 510 *pnmatch = 1; 511 pstmp = &stmp; 512 for (tidx = idx + 1; tidx < sk_X509_OBJECT_num(h); tidx++) { 513 tobj = sk_X509_OBJECT_value(h, tidx); 514 if (x509_object_cmp(&tobj, &pstmp)) 515 break; 516 (*pnmatch)++; 517 } 518 } 519 return idx; 520 } 521 522 int 523 X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type, X509_NAME *name) 524 { 525 return x509_object_idx_cnt(h, type, name, NULL); 526 } 527 528 X509_OBJECT * 529 X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h, int type, 530 X509_NAME *name) 531 { 532 int idx; 533 534 idx = X509_OBJECT_idx_by_subject(h, type, name); 535 if (idx == -1) 536 return NULL; 537 return sk_X509_OBJECT_value(h, idx); 538 } 539 540 X509 * 541 X509_OBJECT_get0_X509(const X509_OBJECT *xo) 542 { 543 if (xo != NULL && xo->type == X509_LU_X509) 544 return xo->data.x509; 545 return NULL; 546 } 547 548 X509_CRL * 549 X509_OBJECT_get0_X509_CRL(X509_OBJECT *xo) 550 { 551 if (xo != NULL && xo->type == X509_LU_CRL) 552 return xo->data.crl; 553 return NULL; 554 } 555 556 STACK_OF(X509) * 557 X509_STORE_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm) 558 { 559 int i, idx, cnt; 560 STACK_OF(X509) *sk; 561 X509 *x; 562 X509_OBJECT *obj; 563 564 sk = sk_X509_new_null(); 565 if (sk == NULL) 566 return NULL; 567 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); 568 idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt); 569 if (idx < 0) { 570 /* Nothing found in cache: do lookup to possibly add new 571 * objects to cache 572 */ 573 X509_OBJECT xobj; 574 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 575 if (!X509_STORE_get_by_subject(ctx, X509_LU_X509, nm, &xobj)) { 576 sk_X509_free(sk); 577 return NULL; 578 } 579 X509_OBJECT_free_contents(&xobj); 580 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); 581 idx = x509_object_idx_cnt(ctx->ctx->objs, 582 X509_LU_X509, nm, &cnt); 583 if (idx < 0) { 584 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 585 sk_X509_free(sk); 586 return NULL; 587 } 588 } 589 for (i = 0; i < cnt; i++, idx++) { 590 obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx); 591 x = obj->data.x509; 592 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509); 593 if (!sk_X509_push(sk, x)) { 594 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 595 X509_free(x); 596 sk_X509_pop_free(sk, X509_free); 597 return NULL; 598 } 599 } 600 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 601 return sk; 602 603 } 604 605 STACK_OF(X509_CRL) * 606 X509_STORE_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm) 607 { 608 int i, idx, cnt; 609 STACK_OF(X509_CRL) *sk; 610 X509_CRL *x; 611 X509_OBJECT *obj, xobj; 612 613 sk = sk_X509_CRL_new_null(); 614 if (sk == NULL) 615 return NULL; 616 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); 617 /* Check cache first */ 618 idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt); 619 620 /* Always do lookup to possibly add new CRLs to cache 621 */ 622 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 623 if (!X509_STORE_get_by_subject(ctx, X509_LU_CRL, nm, &xobj)) { 624 sk_X509_CRL_free(sk); 625 return NULL; 626 } 627 X509_OBJECT_free_contents(&xobj); 628 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); 629 idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt); 630 if (idx < 0) { 631 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 632 sk_X509_CRL_free(sk); 633 return NULL; 634 } 635 636 for (i = 0; i < cnt; i++, idx++) { 637 obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx); 638 x = obj->data.crl; 639 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509_CRL); 640 if (!sk_X509_CRL_push(sk, x)) { 641 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 642 X509_CRL_free(x); 643 sk_X509_CRL_pop_free(sk, X509_CRL_free); 644 return NULL; 645 } 646 } 647 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 648 return sk; 649 } 650 651 X509_OBJECT * 652 X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x) 653 { 654 int idx, i; 655 X509_OBJECT *obj; 656 657 idx = sk_X509_OBJECT_find(h, x); 658 if (idx == -1) 659 return NULL; 660 if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL)) 661 return sk_X509_OBJECT_value(h, idx); 662 for (i = idx; i < sk_X509_OBJECT_num(h); i++) { 663 obj = sk_X509_OBJECT_value(h, i); 664 if (x509_object_cmp((const X509_OBJECT **)&obj, 665 (const X509_OBJECT **)&x)) 666 return NULL; 667 if (x->type == X509_LU_X509) { 668 if (!X509_cmp(obj->data.x509, x->data.x509)) 669 return obj; 670 } else if (x->type == X509_LU_CRL) { 671 if (!X509_CRL_match(obj->data.crl, x->data.crl)) 672 return obj; 673 } else 674 return obj; 675 } 676 return NULL; 677 } 678 679 /* Try to get issuer certificate from store. Due to limitations 680 * of the API this can only retrieve a single certificate matching 681 * a given subject name. However it will fill the cache with all 682 * matching certificates, so we can examine the cache for all 683 * matches. 684 * 685 * Return values are: 686 * 1 lookup successful. 687 * 0 certificate not found. 688 * -1 some other error. 689 */ 690 int 691 X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x) 692 { 693 X509_NAME *xn; 694 X509_OBJECT obj, *pobj; 695 int i, ok, idx, ret; 696 697 *issuer = NULL; 698 xn = X509_get_issuer_name(x); 699 ok = X509_STORE_get_by_subject(ctx, X509_LU_X509, xn, &obj); 700 if (ok != X509_LU_X509) { 701 if (ok == X509_LU_RETRY) { 702 X509_OBJECT_free_contents(&obj); 703 X509error(X509_R_SHOULD_RETRY); 704 return -1; 705 } else if (ok != X509_LU_FAIL) { 706 X509_OBJECT_free_contents(&obj); 707 /* not good :-(, break anyway */ 708 return -1; 709 } 710 return 0; 711 } 712 /* If certificate matches all OK */ 713 if (ctx->check_issued(ctx, x, obj.data.x509)) { 714 if (x509_check_cert_time(ctx, obj.data.x509, 1)) { 715 *issuer = obj.data.x509; 716 return 1; 717 } 718 } 719 X509_OBJECT_free_contents(&obj); 720 721 /* Else find index of first cert accepted by 'check_issued' */ 722 ret = 0; 723 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); 724 idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn); 725 if (idx != -1) /* should be true as we've had at least one match */ { 726 /* Look through all matching certs for suitable issuer */ 727 for (i = idx; i < sk_X509_OBJECT_num(ctx->ctx->objs); i++) { 728 pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i); 729 /* See if we've run past the matches */ 730 if (pobj->type != X509_LU_X509) 731 break; 732 if (X509_NAME_cmp(xn, 733 X509_get_subject_name(pobj->data.x509))) 734 break; 735 if (ctx->check_issued(ctx, x, pobj->data.x509)) { 736 *issuer = pobj->data.x509; 737 ret = 1; 738 /* 739 * If times check, exit with match, 740 * otherwise keep looking. Leave last 741 * match in issuer so we return nearest 742 * match if no certificate time is OK. 743 */ 744 if (x509_check_cert_time(ctx, *issuer, 1)) 745 break; 746 } 747 } 748 } 749 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); 750 if (*issuer) 751 CRYPTO_add(&(*issuer)->references, 1, CRYPTO_LOCK_X509); 752 return ret; 753 } 754 755 STACK_OF(X509_OBJECT) * 756 X509_STORE_get0_objects(X509_STORE *xs) 757 { 758 return xs->objs; 759 } 760 761 void * 762 X509_STORE_get_ex_data(X509_STORE *xs, int idx) 763 { 764 return CRYPTO_get_ex_data(&xs->ex_data, idx); 765 } 766 767 int 768 X509_STORE_set_ex_data(X509_STORE *xs, int idx, void *data) 769 { 770 return CRYPTO_set_ex_data(&xs->ex_data, idx, data); 771 } 772 773 int 774 X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags) 775 { 776 return X509_VERIFY_PARAM_set_flags(ctx->param, flags); 777 } 778 779 int 780 X509_STORE_set_depth(X509_STORE *ctx, int depth) 781 { 782 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 783 return 1; 784 } 785 786 int 787 X509_STORE_set_purpose(X509_STORE *ctx, int purpose) 788 { 789 return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose); 790 } 791 792 int 793 X509_STORE_set_trust(X509_STORE *ctx, int trust) 794 { 795 return X509_VERIFY_PARAM_set_trust(ctx->param, trust); 796 } 797 798 int 799 X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *param) 800 { 801 return X509_VERIFY_PARAM_set1(ctx->param, param); 802 } 803 804 X509_VERIFY_PARAM * 805 X509_STORE_get0_param(X509_STORE *ctx) 806 { 807 return ctx->param; 808 } 809 810 void 811 X509_STORE_set_verify_cb(X509_STORE *ctx, 812 int (*verify_cb)(int, X509_STORE_CTX *)) 813 { 814 ctx->verify_cb = verify_cb; 815 } 816