1 /* $OpenBSD: x_crl.c,v 1.24 2015/02/11 04:00:39 jsing 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/opensslconf.h> 62 63 #include <openssl/asn1t.h> 64 #include <openssl/err.h> 65 #include <openssl/x509.h> 66 #include <openssl/x509v3.h> 67 68 #include "asn1_locl.h" 69 70 static int X509_REVOKED_cmp(const X509_REVOKED * const *a, 71 const X509_REVOKED * const *b); 72 static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp); 73 74 static const ASN1_TEMPLATE X509_REVOKED_seq_tt[] = { 75 { 76 .offset = offsetof(X509_REVOKED, serialNumber), 77 .field_name = "serialNumber", 78 .item = &ASN1_INTEGER_it, 79 }, 80 { 81 .offset = offsetof(X509_REVOKED, revocationDate), 82 .field_name = "revocationDate", 83 .item = &ASN1_TIME_it, 84 }, 85 { 86 .flags = ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_OPTIONAL, 87 .offset = offsetof(X509_REVOKED, extensions), 88 .field_name = "extensions", 89 .item = &X509_EXTENSION_it, 90 }, 91 }; 92 93 const ASN1_ITEM X509_REVOKED_it = { 94 .itype = ASN1_ITYPE_SEQUENCE, 95 .utype = V_ASN1_SEQUENCE, 96 .templates = X509_REVOKED_seq_tt, 97 .tcount = sizeof(X509_REVOKED_seq_tt) / sizeof(ASN1_TEMPLATE), 98 .size = sizeof(X509_REVOKED), 99 .sname = "X509_REVOKED", 100 }; 101 102 static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r); 103 static int def_crl_lookup(X509_CRL *crl, X509_REVOKED **ret, 104 ASN1_INTEGER *serial, X509_NAME *issuer); 105 106 static X509_CRL_METHOD int_crl_meth = { 107 .crl_lookup = def_crl_lookup, 108 .crl_verify = def_crl_verify 109 }; 110 111 static const X509_CRL_METHOD *default_crl_method = &int_crl_meth; 112 113 /* The X509_CRL_INFO structure needs a bit of customisation. 114 * Since we cache the original encoding the signature wont be affected by 115 * reordering of the revoked field. 116 */ 117 static int 118 crl_inf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) 119 { 120 X509_CRL_INFO *a = (X509_CRL_INFO *)*pval; 121 122 if (!a || !a->revoked) 123 return 1; 124 switch (operation) { 125 /* Just set cmp function here. We don't sort because that 126 * would affect the output of X509_CRL_print(). 127 */ 128 case ASN1_OP_D2I_POST: 129 (void)sk_X509_REVOKED_set_cmp_func(a->revoked, X509_REVOKED_cmp); 130 break; 131 } 132 return 1; 133 } 134 135 136 static const ASN1_AUX X509_CRL_INFO_aux = { 137 .flags = ASN1_AFLG_ENCODING, 138 .asn1_cb = crl_inf_cb, 139 .enc_offset = offsetof(X509_CRL_INFO, enc), 140 }; 141 static const ASN1_TEMPLATE X509_CRL_INFO_seq_tt[] = { 142 { 143 .flags = ASN1_TFLG_OPTIONAL, 144 .offset = offsetof(X509_CRL_INFO, version), 145 .field_name = "version", 146 .item = &ASN1_INTEGER_it, 147 }, 148 { 149 .offset = offsetof(X509_CRL_INFO, sig_alg), 150 .field_name = "sig_alg", 151 .item = &X509_ALGOR_it, 152 }, 153 { 154 .offset = offsetof(X509_CRL_INFO, issuer), 155 .field_name = "issuer", 156 .item = &X509_NAME_it, 157 }, 158 { 159 .offset = offsetof(X509_CRL_INFO, lastUpdate), 160 .field_name = "lastUpdate", 161 .item = &ASN1_TIME_it, 162 }, 163 { 164 .flags = ASN1_TFLG_OPTIONAL, 165 .offset = offsetof(X509_CRL_INFO, nextUpdate), 166 .field_name = "nextUpdate", 167 .item = &ASN1_TIME_it, 168 }, 169 { 170 .flags = ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_OPTIONAL, 171 .offset = offsetof(X509_CRL_INFO, revoked), 172 .field_name = "revoked", 173 .item = &X509_REVOKED_it, 174 }, 175 { 176 .flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_OPTIONAL, 177 .offset = offsetof(X509_CRL_INFO, extensions), 178 .field_name = "extensions", 179 .item = &X509_EXTENSION_it, 180 }, 181 }; 182 183 const ASN1_ITEM X509_CRL_INFO_it = { 184 .itype = ASN1_ITYPE_SEQUENCE, 185 .utype = V_ASN1_SEQUENCE, 186 .templates = X509_CRL_INFO_seq_tt, 187 .tcount = sizeof(X509_CRL_INFO_seq_tt) / sizeof(ASN1_TEMPLATE), 188 .funcs = &X509_CRL_INFO_aux, 189 .size = sizeof(X509_CRL_INFO), 190 .sname = "X509_CRL_INFO", 191 }; 192 193 /* Set CRL entry issuer according to CRL certificate issuer extension. 194 * Check for unhandled critical CRL entry extensions. 195 */ 196 197 static int 198 crl_set_issuers(X509_CRL *crl) 199 { 200 int i, j; 201 GENERAL_NAMES *gens, *gtmp; 202 STACK_OF(X509_REVOKED) *revoked; 203 204 revoked = X509_CRL_get_REVOKED(crl); 205 206 gens = NULL; 207 for (i = 0; i < sk_X509_REVOKED_num(revoked); i++) { 208 X509_REVOKED *rev = sk_X509_REVOKED_value(revoked, i); 209 STACK_OF(X509_EXTENSION) *exts; 210 ASN1_ENUMERATED *reason; 211 X509_EXTENSION *ext; 212 gtmp = X509_REVOKED_get_ext_d2i(rev, NID_certificate_issuer, 213 &j, NULL); 214 if (!gtmp && (j != -1)) { 215 crl->flags |= EXFLAG_INVALID; 216 return 1; 217 } 218 219 if (gtmp) { 220 gens = gtmp; 221 if (!crl->issuers) { 222 crl->issuers = sk_GENERAL_NAMES_new_null(); 223 if (!crl->issuers) 224 return 0; 225 } 226 if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp)) 227 return 0; 228 } 229 rev->issuer = gens; 230 231 reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason, 232 &j, NULL); 233 if (!reason && (j != -1)) { 234 crl->flags |= EXFLAG_INVALID; 235 return 1; 236 } 237 238 if (reason) { 239 rev->reason = ASN1_ENUMERATED_get(reason); 240 ASN1_ENUMERATED_free(reason); 241 } else 242 rev->reason = CRL_REASON_NONE; 243 244 /* Check for critical CRL entry extensions */ 245 246 exts = rev->extensions; 247 248 for (j = 0; j < sk_X509_EXTENSION_num(exts); j++) { 249 ext = sk_X509_EXTENSION_value(exts, j); 250 if (ext->critical > 0) { 251 if (OBJ_obj2nid(ext->object) == 252 NID_certificate_issuer) 253 continue; 254 crl->flags |= EXFLAG_CRITICAL; 255 break; 256 } 257 } 258 } 259 260 return 1; 261 } 262 263 /* The X509_CRL structure needs a bit of customisation. Cache some extensions 264 * and hash of the whole CRL. 265 */ 266 static int 267 crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) 268 { 269 X509_CRL *crl = (X509_CRL *)*pval; 270 STACK_OF(X509_EXTENSION) *exts; 271 X509_EXTENSION *ext; 272 int idx; 273 int rc = 1; 274 275 switch (operation) { 276 case ASN1_OP_NEW_POST: 277 crl->idp = NULL; 278 crl->akid = NULL; 279 crl->flags = 0; 280 crl->idp_flags = 0; 281 crl->idp_reasons = CRLDP_ALL_REASONS; 282 crl->meth = default_crl_method; 283 crl->meth_data = NULL; 284 crl->issuers = NULL; 285 crl->crl_number = NULL; 286 crl->base_crl_number = NULL; 287 break; 288 289 case ASN1_OP_D2I_POST: 290 #ifndef OPENSSL_NO_SHA 291 X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL); 292 #endif 293 crl->idp = X509_CRL_get_ext_d2i(crl, 294 NID_issuing_distribution_point, NULL, NULL); 295 if (crl->idp) 296 setup_idp(crl, crl->idp); 297 298 crl->akid = X509_CRL_get_ext_d2i(crl, 299 NID_authority_key_identifier, NULL, NULL); 300 301 crl->crl_number = X509_CRL_get_ext_d2i(crl, 302 NID_crl_number, NULL, NULL); 303 304 crl->base_crl_number = X509_CRL_get_ext_d2i(crl, 305 NID_delta_crl, NULL, NULL); 306 /* Delta CRLs must have CRL number */ 307 if (crl->base_crl_number && !crl->crl_number) 308 crl->flags |= EXFLAG_INVALID; 309 310 /* See if we have any unhandled critical CRL extensions and 311 * indicate this in a flag. We only currently handle IDP, 312 * AKID and deltas, so anything else critical sets the flag. 313 * 314 * This code accesses the X509_CRL structure directly: 315 * applications shouldn't do this. 316 */ 317 318 exts = crl->crl->extensions; 319 320 for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++) { 321 int nid; 322 ext = sk_X509_EXTENSION_value(exts, idx); 323 nid = OBJ_obj2nid(ext->object); 324 if (nid == NID_freshest_crl) 325 crl->flags |= EXFLAG_FRESHEST; 326 if (ext->critical > 0) { 327 /* We handle IDP, AKID and deltas */ 328 if (nid == NID_issuing_distribution_point || 329 nid == NID_authority_key_identifier || 330 nid == NID_delta_crl) 331 break; 332 crl->flags |= EXFLAG_CRITICAL; 333 break; 334 } 335 } 336 337 if (!crl_set_issuers(crl)) 338 return 0; 339 340 if (crl->meth->crl_init) { 341 if (crl->meth->crl_init(crl) == 0) 342 return 0; 343 } 344 break; 345 346 case ASN1_OP_FREE_POST: 347 if (crl->meth->crl_free) { 348 if (!crl->meth->crl_free(crl)) 349 rc = 0; 350 } 351 if (crl->akid) 352 AUTHORITY_KEYID_free(crl->akid); 353 if (crl->idp) 354 ISSUING_DIST_POINT_free(crl->idp); 355 ASN1_INTEGER_free(crl->crl_number); 356 ASN1_INTEGER_free(crl->base_crl_number); 357 sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free); 358 break; 359 } 360 return rc; 361 } 362 363 /* Convert IDP into a more convenient form */ 364 365 static void 366 setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp) 367 { 368 int idp_only = 0; 369 370 /* Set various flags according to IDP */ 371 crl->idp_flags |= IDP_PRESENT; 372 if (idp->onlyuser > 0) { 373 idp_only++; 374 crl->idp_flags |= IDP_ONLYUSER; 375 } 376 if (idp->onlyCA > 0) { 377 idp_only++; 378 crl->idp_flags |= IDP_ONLYCA; 379 } 380 if (idp->onlyattr > 0) { 381 idp_only++; 382 crl->idp_flags |= IDP_ONLYATTR; 383 } 384 385 if (idp_only > 1) 386 crl->idp_flags |= IDP_INVALID; 387 388 if (idp->indirectCRL > 0) 389 crl->idp_flags |= IDP_INDIRECT; 390 391 if (idp->onlysomereasons) { 392 crl->idp_flags |= IDP_REASONS; 393 if (idp->onlysomereasons->length > 0) 394 crl->idp_reasons = idp->onlysomereasons->data[0]; 395 if (idp->onlysomereasons->length > 1) 396 crl->idp_reasons |= 397 (idp->onlysomereasons->data[1] << 8); 398 crl->idp_reasons &= CRLDP_ALL_REASONS; 399 } 400 401 DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl)); 402 } 403 404 static const ASN1_AUX X509_CRL_aux = { 405 .app_data = NULL, 406 .flags = ASN1_AFLG_REFCOUNT, 407 .ref_offset = offsetof(X509_CRL, references), 408 .ref_lock = CRYPTO_LOCK_X509_CRL, 409 .asn1_cb = crl_cb, 410 }; 411 static const ASN1_TEMPLATE X509_CRL_seq_tt[] = { 412 { 413 .offset = offsetof(X509_CRL, crl), 414 .field_name = "crl", 415 .item = &X509_CRL_INFO_it, 416 }, 417 { 418 .offset = offsetof(X509_CRL, sig_alg), 419 .field_name = "sig_alg", 420 .item = &X509_ALGOR_it, 421 }, 422 { 423 .offset = offsetof(X509_CRL, signature), 424 .field_name = "signature", 425 .item = &ASN1_BIT_STRING_it, 426 }, 427 }; 428 429 const ASN1_ITEM X509_CRL_it = { 430 .itype = ASN1_ITYPE_SEQUENCE, 431 .utype = V_ASN1_SEQUENCE, 432 .templates = X509_CRL_seq_tt, 433 .tcount = sizeof(X509_CRL_seq_tt) / sizeof(ASN1_TEMPLATE), 434 .funcs = &X509_CRL_aux, 435 .size = sizeof(X509_CRL), 436 .sname = "X509_CRL", 437 }; 438 439 440 X509_REVOKED * 441 d2i_X509_REVOKED(X509_REVOKED **a, const unsigned char **in, long len) 442 { 443 return (X509_REVOKED *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 444 &X509_REVOKED_it); 445 } 446 447 int 448 i2d_X509_REVOKED(X509_REVOKED *a, unsigned char **out) 449 { 450 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_REVOKED_it); 451 } 452 453 X509_REVOKED * 454 X509_REVOKED_new(void) 455 { 456 return (X509_REVOKED *)ASN1_item_new(&X509_REVOKED_it); 457 } 458 459 void 460 X509_REVOKED_free(X509_REVOKED *a) 461 { 462 ASN1_item_free((ASN1_VALUE *)a, &X509_REVOKED_it); 463 } 464 465 X509_CRL_INFO * 466 d2i_X509_CRL_INFO(X509_CRL_INFO **a, const unsigned char **in, long len) 467 { 468 return (X509_CRL_INFO *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 469 &X509_CRL_INFO_it); 470 } 471 472 int 473 i2d_X509_CRL_INFO(X509_CRL_INFO *a, unsigned char **out) 474 { 475 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_CRL_INFO_it); 476 } 477 478 X509_CRL_INFO * 479 X509_CRL_INFO_new(void) 480 { 481 return (X509_CRL_INFO *)ASN1_item_new(&X509_CRL_INFO_it); 482 } 483 484 void 485 X509_CRL_INFO_free(X509_CRL_INFO *a) 486 { 487 ASN1_item_free((ASN1_VALUE *)a, &X509_CRL_INFO_it); 488 } 489 490 X509_CRL * 491 d2i_X509_CRL(X509_CRL **a, const unsigned char **in, long len) 492 { 493 return (X509_CRL *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 494 &X509_CRL_it); 495 } 496 497 int 498 i2d_X509_CRL(X509_CRL *a, unsigned char **out) 499 { 500 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_CRL_it); 501 } 502 503 X509_CRL * 504 X509_CRL_new(void) 505 { 506 return (X509_CRL *)ASN1_item_new(&X509_CRL_it); 507 } 508 509 void 510 X509_CRL_free(X509_CRL *a) 511 { 512 ASN1_item_free((ASN1_VALUE *)a, &X509_CRL_it); 513 } 514 515 X509_CRL * 516 X509_CRL_dup(X509_CRL *x) 517 { 518 return ASN1_item_dup(&X509_CRL_it, x); 519 } 520 521 static int 522 X509_REVOKED_cmp(const X509_REVOKED * const *a, const X509_REVOKED * const *b) 523 { 524 return(ASN1_STRING_cmp( 525 (ASN1_STRING *)(*a)->serialNumber, 526 (ASN1_STRING *)(*b)->serialNumber)); 527 } 528 529 int 530 X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev) 531 { 532 X509_CRL_INFO *inf; 533 534 inf = crl->crl; 535 if (!inf->revoked) 536 inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp); 537 if (!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) { 538 ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED, ERR_R_MALLOC_FAILURE); 539 return 0; 540 } 541 inf->enc.modified = 1; 542 return 1; 543 } 544 545 int 546 X509_CRL_verify(X509_CRL *crl, EVP_PKEY *r) 547 { 548 if (crl->meth->crl_verify) 549 return crl->meth->crl_verify(crl, r); 550 return 0; 551 } 552 553 int 554 X509_CRL_get0_by_serial(X509_CRL *crl, X509_REVOKED **ret, 555 ASN1_INTEGER *serial) 556 { 557 if (crl->meth->crl_lookup) 558 return crl->meth->crl_lookup(crl, ret, serial, NULL); 559 return 0; 560 } 561 562 int 563 X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x) 564 { 565 if (crl->meth->crl_lookup) 566 return crl->meth->crl_lookup(crl, ret, 567 X509_get_serialNumber(x), X509_get_issuer_name(x)); 568 return 0; 569 } 570 571 static int 572 def_crl_verify(X509_CRL *crl, EVP_PKEY *r) 573 { 574 return(ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO), 575 crl->sig_alg, crl->signature, crl->crl, r)); 576 } 577 578 static int 579 crl_revoked_issuer_match(X509_CRL *crl, X509_NAME *nm, X509_REVOKED *rev) 580 { 581 int i; 582 583 if (!rev->issuer) { 584 if (!nm) 585 return 1; 586 if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl))) 587 return 1; 588 return 0; 589 } 590 591 if (!nm) 592 nm = X509_CRL_get_issuer(crl); 593 594 for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++) { 595 GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i); 596 if (gen->type != GEN_DIRNAME) 597 continue; 598 if (!X509_NAME_cmp(nm, gen->d.directoryName)) 599 return 1; 600 } 601 return 0; 602 603 } 604 605 static int 606 def_crl_lookup(X509_CRL *crl, X509_REVOKED **ret, ASN1_INTEGER *serial, 607 X509_NAME *issuer) 608 { 609 X509_REVOKED rtmp, *rev; 610 int idx; 611 612 rtmp.serialNumber = serial; 613 /* Sort revoked into serial number order if not already sorted. 614 * Do this under a lock to avoid race condition. 615 */ 616 if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked)) { 617 CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL); 618 sk_X509_REVOKED_sort(crl->crl->revoked); 619 CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL); 620 } 621 idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp); 622 if (idx < 0) 623 return 0; 624 /* Need to look for matching name */ 625 for (; idx < sk_X509_REVOKED_num(crl->crl->revoked); idx++) { 626 rev = sk_X509_REVOKED_value(crl->crl->revoked, idx); 627 if (ASN1_INTEGER_cmp(rev->serialNumber, serial)) 628 return 0; 629 if (crl_revoked_issuer_match(crl, issuer, rev)) { 630 if (ret) 631 *ret = rev; 632 if (rev->reason == CRL_REASON_REMOVE_FROM_CRL) 633 return 2; 634 return 1; 635 } 636 } 637 return 0; 638 } 639 640 void 641 X509_CRL_set_default_method(const X509_CRL_METHOD *meth) 642 { 643 if (meth == NULL) 644 default_crl_method = &int_crl_meth; 645 else 646 default_crl_method = meth; 647 } 648 649 X509_CRL_METHOD * 650 X509_CRL_METHOD_new(int (*crl_init)(X509_CRL *crl), 651 int (*crl_free)(X509_CRL *crl), 652 int (*crl_lookup)(X509_CRL *crl, X509_REVOKED **ret, 653 ASN1_INTEGER *ser, X509_NAME *issuer), 654 int (*crl_verify)(X509_CRL *crl, EVP_PKEY *pk)) 655 { 656 X509_CRL_METHOD *m; 657 658 m = malloc(sizeof(X509_CRL_METHOD)); 659 if (!m) 660 return NULL; 661 m->crl_init = crl_init; 662 m->crl_free = crl_free; 663 m->crl_lookup = crl_lookup; 664 m->crl_verify = crl_verify; 665 m->flags = X509_CRL_METHOD_DYNAMIC; 666 return m; 667 } 668 669 void 670 X509_CRL_METHOD_free(X509_CRL_METHOD *m) 671 { 672 if (!(m->flags & X509_CRL_METHOD_DYNAMIC)) 673 return; 674 free(m); 675 } 676 677 void 678 X509_CRL_set_meth_data(X509_CRL *crl, void *dat) 679 { 680 crl->meth_data = dat; 681 } 682 683 void * 684 X509_CRL_get_meth_data(X509_CRL *crl) 685 { 686 return crl->meth_data; 687 } 688