1 /* 2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <stdio.h> 11 #include "internal/cryptlib.h" 12 #include "internal/refcount.h" 13 #include <openssl/x509.h> 14 #include "crypto/x509.h" 15 #include <openssl/x509v3.h> 16 #include "x509_local.h" 17 18 X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method) 19 { 20 X509_LOOKUP *ret = OPENSSL_zalloc(sizeof(*ret)); 21 22 if (ret == NULL) { 23 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 24 return NULL; 25 } 26 27 ret->method = method; 28 if (method->new_item != NULL && method->new_item(ret) == 0) { 29 OPENSSL_free(ret); 30 return NULL; 31 } 32 return ret; 33 } 34 35 void X509_LOOKUP_free(X509_LOOKUP *ctx) 36 { 37 if (ctx == NULL) 38 return; 39 if ((ctx->method != NULL) && (ctx->method->free != NULL)) 40 (*ctx->method->free) (ctx); 41 OPENSSL_free(ctx); 42 } 43 44 int X509_STORE_lock(X509_STORE *s) 45 { 46 return CRYPTO_THREAD_write_lock(s->lock); 47 } 48 49 int X509_STORE_unlock(X509_STORE *s) 50 { 51 return CRYPTO_THREAD_unlock(s->lock); 52 } 53 54 int X509_LOOKUP_init(X509_LOOKUP *ctx) 55 { 56 if (ctx->method == NULL) 57 return 0; 58 if (ctx->method->init != NULL) 59 return ctx->method->init(ctx); 60 else 61 return 1; 62 } 63 64 int X509_LOOKUP_shutdown(X509_LOOKUP *ctx) 65 { 66 if (ctx->method == NULL) 67 return 0; 68 if (ctx->method->shutdown != NULL) 69 return ctx->method->shutdown(ctx); 70 else 71 return 1; 72 } 73 74 int X509_LOOKUP_ctrl_ex(X509_LOOKUP *ctx, int cmd, const char *argc, long argl, 75 char **ret, OSSL_LIB_CTX *libctx, const char *propq) 76 { 77 if (ctx->method == NULL) 78 return -1; 79 if (ctx->method->ctrl_ex != NULL) 80 return ctx->method->ctrl_ex(ctx, cmd, argc, argl, ret, libctx, propq); 81 if (ctx->method->ctrl != NULL) 82 return ctx->method->ctrl(ctx, cmd, argc, argl, ret); 83 return 1; 84 } 85 86 int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl, 87 char **ret) 88 { 89 return X509_LOOKUP_ctrl_ex(ctx, cmd, argc, argl, ret, NULL, NULL); 90 } 91 92 int X509_LOOKUP_by_subject_ex(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type, 93 const X509_NAME *name, X509_OBJECT *ret, 94 OSSL_LIB_CTX *libctx, const char *propq) 95 { 96 if (ctx->skip 97 || ctx->method == NULL 98 || (ctx->method->get_by_subject == NULL 99 && ctx->method->get_by_subject_ex == NULL)) 100 return 0; 101 if (ctx->method->get_by_subject_ex != NULL) 102 return ctx->method->get_by_subject_ex(ctx, type, name, ret, libctx, 103 propq); 104 else 105 return ctx->method->get_by_subject(ctx, type, name, ret); 106 } 107 108 int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type, 109 const X509_NAME *name, X509_OBJECT *ret) 110 { 111 return X509_LOOKUP_by_subject_ex(ctx, type, name, ret, NULL, NULL); 112 } 113 114 int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type, 115 const X509_NAME *name, 116 const ASN1_INTEGER *serial, 117 X509_OBJECT *ret) 118 { 119 if ((ctx->method == NULL) || (ctx->method->get_by_issuer_serial == NULL)) 120 return 0; 121 return ctx->method->get_by_issuer_serial(ctx, type, name, serial, ret); 122 } 123 124 int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type, 125 const unsigned char *bytes, int len, 126 X509_OBJECT *ret) 127 { 128 if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL)) 129 return 0; 130 return ctx->method->get_by_fingerprint(ctx, type, bytes, len, ret); 131 } 132 133 int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type, 134 const char *str, int len, X509_OBJECT *ret) 135 { 136 if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL)) 137 return 0; 138 return ctx->method->get_by_alias(ctx, type, str, len, ret); 139 } 140 141 int X509_LOOKUP_set_method_data(X509_LOOKUP *ctx, void *data) 142 { 143 ctx->method_data = data; 144 return 1; 145 } 146 147 void *X509_LOOKUP_get_method_data(const X509_LOOKUP *ctx) 148 { 149 return ctx->method_data; 150 } 151 152 X509_STORE *X509_LOOKUP_get_store(const X509_LOOKUP *ctx) 153 { 154 return ctx->store_ctx; 155 } 156 157 158 static int x509_object_cmp(const X509_OBJECT *const *a, 159 const X509_OBJECT *const *b) 160 { 161 int ret; 162 163 ret = ((*a)->type - (*b)->type); 164 if (ret) 165 return ret; 166 switch ((*a)->type) { 167 case X509_LU_X509: 168 ret = X509_subject_name_cmp((*a)->data.x509, (*b)->data.x509); 169 break; 170 case X509_LU_CRL: 171 ret = X509_CRL_cmp((*a)->data.crl, (*b)->data.crl); 172 break; 173 case X509_LU_NONE: 174 /* abort(); */ 175 return 0; 176 } 177 return ret; 178 } 179 180 X509_STORE *X509_STORE_new(void) 181 { 182 X509_STORE *ret = OPENSSL_zalloc(sizeof(*ret)); 183 184 if (ret == NULL) { 185 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 186 return NULL; 187 } 188 if ((ret->objs = sk_X509_OBJECT_new(x509_object_cmp)) == NULL) { 189 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 190 goto err; 191 } 192 ret->cache = 1; 193 if ((ret->get_cert_methods = sk_X509_LOOKUP_new_null()) == NULL) { 194 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 195 goto err; 196 } 197 198 if ((ret->param = X509_VERIFY_PARAM_new()) == NULL) { 199 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 200 goto err; 201 } 202 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data)) { 203 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 204 goto err; 205 } 206 207 ret->lock = CRYPTO_THREAD_lock_new(); 208 if (ret->lock == NULL) { 209 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 210 goto err; 211 } 212 ret->references = 1; 213 return ret; 214 215 err: 216 X509_VERIFY_PARAM_free(ret->param); 217 sk_X509_OBJECT_free(ret->objs); 218 sk_X509_LOOKUP_free(ret->get_cert_methods); 219 OPENSSL_free(ret); 220 return NULL; 221 } 222 223 void X509_STORE_free(X509_STORE *vfy) 224 { 225 int i; 226 STACK_OF(X509_LOOKUP) *sk; 227 X509_LOOKUP *lu; 228 229 if (vfy == NULL) 230 return; 231 CRYPTO_DOWN_REF(&vfy->references, &i, vfy->lock); 232 REF_PRINT_COUNT("X509_STORE", vfy); 233 if (i > 0) 234 return; 235 REF_ASSERT_ISNT(i < 0); 236 237 sk = vfy->get_cert_methods; 238 for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) { 239 lu = sk_X509_LOOKUP_value(sk, i); 240 X509_LOOKUP_shutdown(lu); 241 X509_LOOKUP_free(lu); 242 } 243 sk_X509_LOOKUP_free(sk); 244 sk_X509_OBJECT_pop_free(vfy->objs, X509_OBJECT_free); 245 246 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, vfy, &vfy->ex_data); 247 X509_VERIFY_PARAM_free(vfy->param); 248 CRYPTO_THREAD_lock_free(vfy->lock); 249 OPENSSL_free(vfy); 250 } 251 252 int X509_STORE_up_ref(X509_STORE *vfy) 253 { 254 int i; 255 256 if (CRYPTO_UP_REF(&vfy->references, &i, vfy->lock) <= 0) 257 return 0; 258 259 REF_PRINT_COUNT("X509_STORE", vfy); 260 REF_ASSERT_ISNT(i < 2); 261 return ((i > 1) ? 1 : 0); 262 } 263 264 X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m) 265 { 266 int i; 267 STACK_OF(X509_LOOKUP) *sk; 268 X509_LOOKUP *lu; 269 270 sk = v->get_cert_methods; 271 for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) { 272 lu = sk_X509_LOOKUP_value(sk, i); 273 if (m == lu->method) { 274 return lu; 275 } 276 } 277 /* a new one */ 278 lu = X509_LOOKUP_new(m); 279 if (lu == NULL) { 280 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 281 return NULL; 282 } 283 284 lu->store_ctx = v; 285 if (sk_X509_LOOKUP_push(v->get_cert_methods, lu)) 286 return lu; 287 /* malloc failed */ 288 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 289 X509_LOOKUP_free(lu); 290 return NULL; 291 } 292 293 X509_OBJECT *X509_STORE_CTX_get_obj_by_subject(X509_STORE_CTX *vs, 294 X509_LOOKUP_TYPE type, 295 const X509_NAME *name) 296 { 297 X509_OBJECT *ret = X509_OBJECT_new(); 298 299 if (ret == NULL) 300 return NULL; 301 if (!X509_STORE_CTX_get_by_subject(vs, type, name, ret)) { 302 X509_OBJECT_free(ret); 303 return NULL; 304 } 305 return ret; 306 } 307 308 /* Also fill the cache with all matching certificates */ 309 int X509_STORE_CTX_get_by_subject(const X509_STORE_CTX *vs, 310 X509_LOOKUP_TYPE type, 311 const X509_NAME *name, X509_OBJECT *ret) 312 { 313 X509_STORE *store = vs->store; 314 X509_LOOKUP *lu; 315 X509_OBJECT stmp, *tmp; 316 int i, j; 317 318 if (store == NULL) 319 return 0; 320 321 stmp.type = X509_LU_NONE; 322 stmp.data.ptr = NULL; 323 324 if (!X509_STORE_lock(store)) 325 return 0; 326 327 tmp = X509_OBJECT_retrieve_by_subject(store->objs, type, name); 328 X509_STORE_unlock(store); 329 330 if (tmp == NULL || type == X509_LU_CRL) { 331 for (i = 0; i < sk_X509_LOOKUP_num(store->get_cert_methods); i++) { 332 lu = sk_X509_LOOKUP_value(store->get_cert_methods, i); 333 j = X509_LOOKUP_by_subject_ex(lu, type, name, &stmp, vs->libctx, 334 vs->propq); 335 if (j) { 336 tmp = &stmp; 337 break; 338 } 339 } 340 if (tmp == NULL) 341 return 0; 342 } 343 344 if (!X509_OBJECT_up_ref_count(tmp)) 345 return 0; 346 347 ret->type = tmp->type; 348 ret->data.ptr = tmp->data.ptr; 349 350 return 1; 351 } 352 353 static int x509_store_add(X509_STORE *store, void *x, int crl) { 354 X509_OBJECT *obj; 355 int ret = 0, added = 0; 356 357 if (x == NULL) 358 return 0; 359 obj = X509_OBJECT_new(); 360 if (obj == NULL) 361 return 0; 362 363 if (crl) { 364 obj->type = X509_LU_CRL; 365 obj->data.crl = (X509_CRL *)x; 366 } else { 367 obj->type = X509_LU_X509; 368 obj->data.x509 = (X509 *)x; 369 } 370 if (!X509_OBJECT_up_ref_count(obj)) { 371 obj->type = X509_LU_NONE; 372 X509_OBJECT_free(obj); 373 return 0; 374 } 375 376 if (!X509_STORE_lock(store)) { 377 obj->type = X509_LU_NONE; 378 X509_OBJECT_free(obj); 379 return 0; 380 } 381 382 if (X509_OBJECT_retrieve_match(store->objs, obj)) { 383 ret = 1; 384 } else { 385 added = sk_X509_OBJECT_push(store->objs, obj); 386 ret = added != 0; 387 } 388 X509_STORE_unlock(store); 389 390 if (added == 0) /* obj not pushed */ 391 X509_OBJECT_free(obj); 392 393 return ret; 394 } 395 396 int X509_STORE_add_cert(X509_STORE *ctx, X509 *x) 397 { 398 if (!x509_store_add(ctx, x, 0)) { 399 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 400 return 0; 401 } 402 return 1; 403 } 404 405 int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x) 406 { 407 if (!x509_store_add(ctx, x, 1)) { 408 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 409 return 0; 410 } 411 return 1; 412 } 413 414 int X509_OBJECT_up_ref_count(X509_OBJECT *a) 415 { 416 switch (a->type) { 417 case X509_LU_NONE: 418 break; 419 case X509_LU_X509: 420 return X509_up_ref(a->data.x509); 421 case X509_LU_CRL: 422 return X509_CRL_up_ref(a->data.crl); 423 } 424 return 1; 425 } 426 427 X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a) 428 { 429 if (a == NULL || a->type != X509_LU_X509) 430 return NULL; 431 return a->data.x509; 432 } 433 434 X509_CRL *X509_OBJECT_get0_X509_CRL(const X509_OBJECT *a) 435 { 436 if (a == NULL || a->type != X509_LU_CRL) 437 return NULL; 438 return a->data.crl; 439 } 440 441 X509_LOOKUP_TYPE X509_OBJECT_get_type(const X509_OBJECT *a) 442 { 443 return a->type; 444 } 445 446 X509_OBJECT *X509_OBJECT_new(void) 447 { 448 X509_OBJECT *ret = OPENSSL_zalloc(sizeof(*ret)); 449 450 if (ret == NULL) { 451 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); 452 return NULL; 453 } 454 ret->type = X509_LU_NONE; 455 return ret; 456 } 457 458 static void x509_object_free_internal(X509_OBJECT *a) 459 { 460 if (a == NULL) 461 return; 462 switch (a->type) { 463 case X509_LU_NONE: 464 break; 465 case X509_LU_X509: 466 X509_free(a->data.x509); 467 break; 468 case X509_LU_CRL: 469 X509_CRL_free(a->data.crl); 470 break; 471 } 472 } 473 474 int X509_OBJECT_set1_X509(X509_OBJECT *a, X509 *obj) 475 { 476 if (a == NULL || !X509_up_ref(obj)) 477 return 0; 478 479 x509_object_free_internal(a); 480 a->type = X509_LU_X509; 481 a->data.x509 = obj; 482 return 1; 483 } 484 485 int X509_OBJECT_set1_X509_CRL(X509_OBJECT *a, X509_CRL *obj) 486 { 487 if (a == NULL || !X509_CRL_up_ref(obj)) 488 return 0; 489 490 x509_object_free_internal(a); 491 a->type = X509_LU_CRL; 492 a->data.crl = obj; 493 return 1; 494 } 495 496 void X509_OBJECT_free(X509_OBJECT *a) 497 { 498 x509_object_free_internal(a); 499 OPENSSL_free(a); 500 } 501 502 static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, X509_LOOKUP_TYPE type, 503 const X509_NAME *name, int *pnmatch) 504 { 505 X509_OBJECT stmp; 506 X509 x509_s; 507 X509_CRL crl_s; 508 int idx; 509 510 stmp.type = type; 511 switch (type) { 512 case X509_LU_X509: 513 stmp.data.x509 = &x509_s; 514 x509_s.cert_info.subject = (X509_NAME *)name; /* won't modify it */ 515 break; 516 case X509_LU_CRL: 517 stmp.data.crl = &crl_s; 518 crl_s.crl.issuer = (X509_NAME *)name; /* won't modify it */ 519 break; 520 case X509_LU_NONE: 521 /* abort(); */ 522 return -1; 523 } 524 525 idx = sk_X509_OBJECT_find_all(h, &stmp, pnmatch); 526 return idx; 527 } 528 529 int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, X509_LOOKUP_TYPE type, 530 const X509_NAME *name) 531 { 532 return x509_object_idx_cnt(h, type, name, NULL); 533 } 534 535 X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h, 536 X509_LOOKUP_TYPE type, 537 const X509_NAME *name) 538 { 539 int idx; 540 idx = X509_OBJECT_idx_by_subject(h, type, name); 541 if (idx == -1) 542 return NULL; 543 return sk_X509_OBJECT_value(h, idx); 544 } 545 546 STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(const X509_STORE *v) 547 { 548 return v->objs; 549 } 550 551 STACK_OF(X509) *X509_STORE_get1_all_certs(X509_STORE *store) 552 { 553 STACK_OF(X509) *sk; 554 STACK_OF(X509_OBJECT) *objs; 555 int i; 556 557 if (store == NULL) { 558 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER); 559 return NULL; 560 } 561 if ((sk = sk_X509_new_null()) == NULL) 562 return NULL; 563 if (!X509_STORE_lock(store)) 564 goto out_free; 565 566 objs = X509_STORE_get0_objects(store); 567 for (i = 0; i < sk_X509_OBJECT_num(objs); i++) { 568 X509 *cert = X509_OBJECT_get0_X509(sk_X509_OBJECT_value(objs, i)); 569 570 if (cert != NULL 571 && !X509_add_cert(sk, cert, X509_ADD_FLAG_UP_REF)) 572 goto err; 573 } 574 X509_STORE_unlock(store); 575 return sk; 576 577 err: 578 X509_STORE_unlock(store); 579 out_free: 580 sk_X509_pop_free(sk, X509_free); 581 return NULL; 582 } 583 584 STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, 585 const X509_NAME *nm) 586 { 587 int i, idx, cnt; 588 STACK_OF(X509) *sk = NULL; 589 X509 *x; 590 X509_OBJECT *obj; 591 X509_STORE *store = ctx->store; 592 593 if (store == NULL) 594 return NULL; 595 596 if (!X509_STORE_lock(store)) 597 return NULL; 598 599 idx = x509_object_idx_cnt(store->objs, X509_LU_X509, nm, &cnt); 600 if (idx < 0) { 601 /* 602 * Nothing found in cache: do lookup to possibly add new objects to 603 * cache 604 */ 605 X509_OBJECT *xobj = X509_OBJECT_new(); 606 607 X509_STORE_unlock(store); 608 609 if (xobj == NULL) 610 return NULL; 611 if (!X509_STORE_CTX_get_by_subject(ctx, X509_LU_X509, nm, xobj)) { 612 X509_OBJECT_free(xobj); 613 return NULL; 614 } 615 X509_OBJECT_free(xobj); 616 if (!X509_STORE_lock(store)) 617 return NULL; 618 idx = x509_object_idx_cnt(store->objs, X509_LU_X509, nm, &cnt); 619 if (idx < 0) { 620 X509_STORE_unlock(store); 621 return NULL; 622 } 623 } 624 625 sk = sk_X509_new_null(); 626 for (i = 0; i < cnt; i++, idx++) { 627 obj = sk_X509_OBJECT_value(store->objs, idx); 628 x = obj->data.x509; 629 if (!X509_add_cert(sk, x, X509_ADD_FLAG_UP_REF)) { 630 X509_STORE_unlock(store); 631 sk_X509_pop_free(sk, X509_free); 632 return NULL; 633 } 634 } 635 X509_STORE_unlock(store); 636 return sk; 637 } 638 639 STACK_OF(X509_CRL) *X509_STORE_CTX_get1_crls(const X509_STORE_CTX *ctx, 640 const X509_NAME *nm) 641 { 642 int i, idx, cnt; 643 STACK_OF(X509_CRL) *sk = sk_X509_CRL_new_null(); 644 X509_CRL *x; 645 X509_OBJECT *obj, *xobj = X509_OBJECT_new(); 646 X509_STORE *store = ctx->store; 647 648 /* Always do lookup to possibly add new CRLs to cache */ 649 if (sk == NULL 650 || xobj == NULL 651 || store == NULL 652 || !X509_STORE_CTX_get_by_subject(ctx, X509_LU_CRL, nm, xobj)) { 653 X509_OBJECT_free(xobj); 654 sk_X509_CRL_free(sk); 655 return NULL; 656 } 657 X509_OBJECT_free(xobj); 658 if (!X509_STORE_lock(store)) { 659 sk_X509_CRL_free(sk); 660 return NULL; 661 } 662 idx = x509_object_idx_cnt(store->objs, X509_LU_CRL, nm, &cnt); 663 if (idx < 0) { 664 X509_STORE_unlock(store); 665 sk_X509_CRL_free(sk); 666 return NULL; 667 } 668 669 for (i = 0; i < cnt; i++, idx++) { 670 obj = sk_X509_OBJECT_value(store->objs, idx); 671 x = obj->data.crl; 672 if (!X509_CRL_up_ref(x)) { 673 X509_STORE_unlock(store); 674 sk_X509_CRL_pop_free(sk, X509_CRL_free); 675 return NULL; 676 } 677 if (!sk_X509_CRL_push(sk, x)) { 678 X509_STORE_unlock(store); 679 X509_CRL_free(x); 680 sk_X509_CRL_pop_free(sk, X509_CRL_free); 681 return NULL; 682 } 683 } 684 X509_STORE_unlock(store); 685 return sk; 686 } 687 688 X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, 689 X509_OBJECT *x) 690 { 691 int idx, i, num; 692 X509_OBJECT *obj; 693 694 idx = sk_X509_OBJECT_find(h, x); 695 if (idx < 0) 696 return NULL; 697 if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL)) 698 return sk_X509_OBJECT_value(h, idx); 699 for (i = idx, num = sk_X509_OBJECT_num(h); i < num; i++) { 700 obj = sk_X509_OBJECT_value(h, i); 701 if (x509_object_cmp((const X509_OBJECT **)&obj, 702 (const X509_OBJECT **)&x)) 703 return NULL; 704 if (x->type == X509_LU_X509) { 705 if (!X509_cmp(obj->data.x509, x->data.x509)) 706 return obj; 707 } else if (x->type == X509_LU_CRL) { 708 if (X509_CRL_match(obj->data.crl, x->data.crl) == 0) 709 return obj; 710 } else 711 return obj; 712 } 713 return NULL; 714 } 715 716 /*- 717 * Try to get issuer cert from |ctx->store| matching the subject name of |x|. 718 * Prefer the first non-expired one, else take the most recently expired one. 719 * 720 * Return values are: 721 * 1 lookup successful. 722 * 0 certificate not found. 723 * -1 some other error. 724 */ 725 int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x) 726 { 727 const X509_NAME *xn; 728 X509_OBJECT *obj = X509_OBJECT_new(), *pobj = NULL; 729 X509_STORE *store = ctx->store; 730 int i, ok, idx, ret, nmatch = 0; 731 732 if (obj == NULL) 733 return -1; 734 *issuer = NULL; 735 xn = X509_get_issuer_name(x); 736 ok = X509_STORE_CTX_get_by_subject(ctx, X509_LU_X509, xn, obj); 737 if (ok != 1) { 738 X509_OBJECT_free(obj); 739 return 0; 740 } 741 /* If certificate matches and is currently valid all OK */ 742 if (ctx->check_issued(ctx, x, obj->data.x509)) { 743 if (ossl_x509_check_cert_time(ctx, obj->data.x509, -1)) { 744 *issuer = obj->data.x509; 745 /* |*issuer| has taken over the cert reference from |obj| */ 746 obj->type = X509_LU_NONE; 747 X509_OBJECT_free(obj); 748 return 1; 749 } 750 } 751 X509_OBJECT_free(obj); 752 753 /* 754 * Due to limitations of the API this can only retrieve a single cert. 755 * However it will fill the cache with all matching certificates, 756 * so we can examine the cache for all matches. 757 */ 758 if (store == NULL) 759 return 0; 760 761 /* Find index of first currently valid cert accepted by 'check_issued' */ 762 ret = 0; 763 if (!X509_STORE_lock(store)) 764 return 0; 765 766 idx = x509_object_idx_cnt(store->objs, X509_LU_X509, xn, &nmatch); 767 if (idx != -1) { /* should be true as we've had at least one match */ 768 /* Look through all matching certs for suitable issuer */ 769 for (i = idx; i < idx + nmatch; i++) { 770 pobj = sk_X509_OBJECT_value(store->objs, i); 771 /* See if we've run past the matches */ 772 if (pobj->type != X509_LU_X509) 773 break; 774 if (ctx->check_issued(ctx, x, pobj->data.x509)) { 775 ret = 1; 776 /* If times check fine, exit with match, else keep looking. */ 777 if (ossl_x509_check_cert_time(ctx, pobj->data.x509, -1)) { 778 *issuer = pobj->data.x509; 779 break; 780 } 781 /* 782 * Leave the so far most recently expired match in *issuer 783 * so we return nearest match if no certificate time is OK. 784 */ 785 if (*issuer == NULL 786 || ASN1_TIME_compare(X509_get0_notAfter(pobj->data.x509), 787 X509_get0_notAfter(*issuer)) > 0) 788 *issuer = pobj->data.x509; 789 } 790 } 791 } 792 if (*issuer != NULL && !X509_up_ref(*issuer)) { 793 *issuer = NULL; 794 ret = -1; 795 } 796 X509_STORE_unlock(store); 797 return ret; 798 } 799 800 int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags) 801 { 802 return X509_VERIFY_PARAM_set_flags(ctx->param, flags); 803 } 804 805 int X509_STORE_set_depth(X509_STORE *ctx, int depth) 806 { 807 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 808 return 1; 809 } 810 811 int X509_STORE_set_purpose(X509_STORE *ctx, int purpose) 812 { 813 return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose); 814 } 815 816 int X509_STORE_set_trust(X509_STORE *ctx, int trust) 817 { 818 return X509_VERIFY_PARAM_set_trust(ctx->param, trust); 819 } 820 821 int X509_STORE_set1_param(X509_STORE *ctx, const X509_VERIFY_PARAM *param) 822 { 823 return X509_VERIFY_PARAM_set1(ctx->param, param); 824 } 825 826 X509_VERIFY_PARAM *X509_STORE_get0_param(const X509_STORE *ctx) 827 { 828 return ctx->param; 829 } 830 831 void X509_STORE_set_verify(X509_STORE *ctx, X509_STORE_CTX_verify_fn verify) 832 { 833 ctx->verify = verify; 834 } 835 836 X509_STORE_CTX_verify_fn X509_STORE_get_verify(const X509_STORE *ctx) 837 { 838 return ctx->verify; 839 } 840 841 void X509_STORE_set_verify_cb(X509_STORE *ctx, 842 X509_STORE_CTX_verify_cb verify_cb) 843 { 844 ctx->verify_cb = verify_cb; 845 } 846 847 X509_STORE_CTX_verify_cb X509_STORE_get_verify_cb(const X509_STORE *ctx) 848 { 849 return ctx->verify_cb; 850 } 851 852 void X509_STORE_set_get_issuer(X509_STORE *ctx, 853 X509_STORE_CTX_get_issuer_fn get_issuer) 854 { 855 ctx->get_issuer = get_issuer; 856 } 857 858 X509_STORE_CTX_get_issuer_fn X509_STORE_get_get_issuer(const X509_STORE *ctx) 859 { 860 return ctx->get_issuer; 861 } 862 863 void X509_STORE_set_check_issued(X509_STORE *ctx, 864 X509_STORE_CTX_check_issued_fn check_issued) 865 { 866 ctx->check_issued = check_issued; 867 } 868 869 X509_STORE_CTX_check_issued_fn X509_STORE_get_check_issued(const X509_STORE *ctx) 870 { 871 return ctx->check_issued; 872 } 873 874 void X509_STORE_set_check_revocation(X509_STORE *ctx, 875 X509_STORE_CTX_check_revocation_fn check_revocation) 876 { 877 ctx->check_revocation = check_revocation; 878 } 879 880 X509_STORE_CTX_check_revocation_fn X509_STORE_get_check_revocation(const X509_STORE *ctx) 881 { 882 return ctx->check_revocation; 883 } 884 885 void X509_STORE_set_get_crl(X509_STORE *ctx, 886 X509_STORE_CTX_get_crl_fn get_crl) 887 { 888 ctx->get_crl = get_crl; 889 } 890 891 X509_STORE_CTX_get_crl_fn X509_STORE_get_get_crl(const X509_STORE *ctx) 892 { 893 return ctx->get_crl; 894 } 895 896 void X509_STORE_set_check_crl(X509_STORE *ctx, 897 X509_STORE_CTX_check_crl_fn check_crl) 898 { 899 ctx->check_crl = check_crl; 900 } 901 902 X509_STORE_CTX_check_crl_fn X509_STORE_get_check_crl(const X509_STORE *ctx) 903 { 904 return ctx->check_crl; 905 } 906 907 void X509_STORE_set_cert_crl(X509_STORE *ctx, 908 X509_STORE_CTX_cert_crl_fn cert_crl) 909 { 910 ctx->cert_crl = cert_crl; 911 } 912 913 X509_STORE_CTX_cert_crl_fn X509_STORE_get_cert_crl(const X509_STORE *ctx) 914 { 915 return ctx->cert_crl; 916 } 917 918 void X509_STORE_set_check_policy(X509_STORE *ctx, 919 X509_STORE_CTX_check_policy_fn check_policy) 920 { 921 ctx->check_policy = check_policy; 922 } 923 924 X509_STORE_CTX_check_policy_fn X509_STORE_get_check_policy(const X509_STORE *ctx) 925 { 926 return ctx->check_policy; 927 } 928 929 void X509_STORE_set_lookup_certs(X509_STORE *ctx, 930 X509_STORE_CTX_lookup_certs_fn lookup_certs) 931 { 932 ctx->lookup_certs = lookup_certs; 933 } 934 935 X509_STORE_CTX_lookup_certs_fn X509_STORE_get_lookup_certs(const X509_STORE *ctx) 936 { 937 return ctx->lookup_certs; 938 } 939 940 void X509_STORE_set_lookup_crls(X509_STORE *ctx, 941 X509_STORE_CTX_lookup_crls_fn lookup_crls) 942 { 943 ctx->lookup_crls = lookup_crls; 944 } 945 946 X509_STORE_CTX_lookup_crls_fn X509_STORE_get_lookup_crls(const X509_STORE *ctx) 947 { 948 return ctx->lookup_crls; 949 } 950 951 void X509_STORE_set_cleanup(X509_STORE *ctx, 952 X509_STORE_CTX_cleanup_fn ctx_cleanup) 953 { 954 ctx->cleanup = ctx_cleanup; 955 } 956 957 X509_STORE_CTX_cleanup_fn X509_STORE_get_cleanup(const X509_STORE *ctx) 958 { 959 return ctx->cleanup; 960 } 961 962 int X509_STORE_set_ex_data(X509_STORE *ctx, int idx, void *data) 963 { 964 return CRYPTO_set_ex_data(&ctx->ex_data, idx, data); 965 } 966 967 void *X509_STORE_get_ex_data(const X509_STORE *ctx, int idx) 968 { 969 return CRYPTO_get_ex_data(&ctx->ex_data, idx); 970 } 971 972 X509_STORE *X509_STORE_CTX_get0_store(const X509_STORE_CTX *ctx) 973 { 974 return ctx->store; 975 } 976