1 /*! \file ssl/ssl_cert.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core (at) openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay (at) cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh (at) cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 117 #include <stdio.h> 118 119 #include "e_os.h" 120 #ifndef NO_SYS_TYPES_H 121 # include <sys/types.h> 122 #endif 123 124 #include "o_dir.h" 125 #include <openssl/objects.h> 126 #include <openssl/bio.h> 127 #include <openssl/pem.h> 128 #include <openssl/x509v3.h> 129 #ifndef OPENSSL_NO_DH 130 #include <openssl/dh.h> 131 #endif 132 #include <openssl/bn.h> 133 #include "ssl_locl.h" 134 135 int SSL_get_ex_data_X509_STORE_CTX_idx(void) 136 { 137 static volatile int ssl_x509_store_ctx_idx= -1; 138 int got_write_lock = 0; 139 140 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 141 142 if (ssl_x509_store_ctx_idx < 0) 143 { 144 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 145 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 146 got_write_lock = 1; 147 148 if (ssl_x509_store_ctx_idx < 0) 149 { 150 ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index( 151 0,"SSL for verify callback",NULL,NULL,NULL); 152 } 153 } 154 155 if (got_write_lock) 156 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 157 else 158 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 159 160 return ssl_x509_store_ctx_idx; 161 } 162 163 CERT *ssl_cert_new(void) 164 { 165 CERT *ret; 166 167 ret=(CERT *)OPENSSL_malloc(sizeof(CERT)); 168 if (ret == NULL) 169 { 170 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE); 171 return(NULL); 172 } 173 memset(ret,0,sizeof(CERT)); 174 175 ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]); 176 ret->references=1; 177 178 return(ret); 179 } 180 181 CERT *ssl_cert_dup(CERT *cert) 182 { 183 CERT *ret; 184 int i; 185 186 ret = (CERT *)OPENSSL_malloc(sizeof(CERT)); 187 if (ret == NULL) 188 { 189 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); 190 return(NULL); 191 } 192 193 memset(ret, 0, sizeof(CERT)); 194 195 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]]; 196 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys), 197 * if you find that more readable */ 198 199 ret->valid = cert->valid; 200 ret->mask = cert->mask; 201 ret->export_mask = cert->export_mask; 202 203 #ifndef OPENSSL_NO_RSA 204 if (cert->rsa_tmp != NULL) 205 { 206 RSA_up_ref(cert->rsa_tmp); 207 ret->rsa_tmp = cert->rsa_tmp; 208 } 209 ret->rsa_tmp_cb = cert->rsa_tmp_cb; 210 #endif 211 212 #ifndef OPENSSL_NO_DH 213 if (cert->dh_tmp != NULL) 214 { 215 ret->dh_tmp = DHparams_dup(cert->dh_tmp); 216 if (ret->dh_tmp == NULL) 217 { 218 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB); 219 goto err; 220 } 221 if (cert->dh_tmp->priv_key) 222 { 223 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key); 224 if (!b) 225 { 226 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 227 goto err; 228 } 229 ret->dh_tmp->priv_key = b; 230 } 231 if (cert->dh_tmp->pub_key) 232 { 233 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key); 234 if (!b) 235 { 236 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 237 goto err; 238 } 239 ret->dh_tmp->pub_key = b; 240 } 241 } 242 ret->dh_tmp_cb = cert->dh_tmp_cb; 243 #endif 244 245 #ifndef OPENSSL_NO_ECDH 246 if (cert->ecdh_tmp) 247 { 248 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp); 249 if (ret->ecdh_tmp == NULL) 250 { 251 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB); 252 goto err; 253 } 254 } 255 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb; 256 #endif 257 258 for (i = 0; i < SSL_PKEY_NUM; i++) 259 { 260 if (cert->pkeys[i].x509 != NULL) 261 { 262 ret->pkeys[i].x509 = cert->pkeys[i].x509; 263 CRYPTO_add(&ret->pkeys[i].x509->references, 1, 264 CRYPTO_LOCK_X509); 265 } 266 267 if (cert->pkeys[i].privatekey != NULL) 268 { 269 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 270 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1, 271 CRYPTO_LOCK_EVP_PKEY); 272 273 switch(i) 274 { 275 /* If there was anything special to do for 276 * certain types of keys, we'd do it here. 277 * (Nothing at the moment, I think.) */ 278 279 case SSL_PKEY_RSA_ENC: 280 case SSL_PKEY_RSA_SIGN: 281 /* We have an RSA key. */ 282 break; 283 284 case SSL_PKEY_DSA_SIGN: 285 /* We have a DSA key. */ 286 break; 287 288 case SSL_PKEY_DH_RSA: 289 case SSL_PKEY_DH_DSA: 290 /* We have a DH key. */ 291 break; 292 293 case SSL_PKEY_ECC: 294 /* We have an ECC key */ 295 break; 296 297 default: 298 /* Can't happen. */ 299 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG); 300 } 301 } 302 } 303 304 /* ret->extra_certs *should* exist, but currently the own certificate 305 * chain is held inside SSL_CTX */ 306 307 ret->references=1; 308 309 return(ret); 310 311 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH) 312 err: 313 #endif 314 #ifndef OPENSSL_NO_RSA 315 if (ret->rsa_tmp != NULL) 316 RSA_free(ret->rsa_tmp); 317 #endif 318 #ifndef OPENSSL_NO_DH 319 if (ret->dh_tmp != NULL) 320 DH_free(ret->dh_tmp); 321 #endif 322 #ifndef OPENSSL_NO_ECDH 323 if (ret->ecdh_tmp != NULL) 324 EC_KEY_free(ret->ecdh_tmp); 325 #endif 326 327 for (i = 0; i < SSL_PKEY_NUM; i++) 328 { 329 if (ret->pkeys[i].x509 != NULL) 330 X509_free(ret->pkeys[i].x509); 331 if (ret->pkeys[i].privatekey != NULL) 332 EVP_PKEY_free(ret->pkeys[i].privatekey); 333 } 334 335 return NULL; 336 } 337 338 339 void ssl_cert_free(CERT *c) 340 { 341 int i; 342 343 if(c == NULL) 344 return; 345 346 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT); 347 #ifdef REF_PRINT 348 REF_PRINT("CERT",c); 349 #endif 350 if (i > 0) return; 351 #ifdef REF_CHECK 352 if (i < 0) 353 { 354 fprintf(stderr,"ssl_cert_free, bad reference count\n"); 355 abort(); /* ok */ 356 } 357 #endif 358 359 #ifndef OPENSSL_NO_RSA 360 if (c->rsa_tmp) RSA_free(c->rsa_tmp); 361 #endif 362 #ifndef OPENSSL_NO_DH 363 if (c->dh_tmp) DH_free(c->dh_tmp); 364 #endif 365 #ifndef OPENSSL_NO_ECDH 366 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp); 367 #endif 368 369 for (i=0; i<SSL_PKEY_NUM; i++) 370 { 371 if (c->pkeys[i].x509 != NULL) 372 X509_free(c->pkeys[i].x509); 373 if (c->pkeys[i].privatekey != NULL) 374 EVP_PKEY_free(c->pkeys[i].privatekey); 375 #if 0 376 if (c->pkeys[i].publickey != NULL) 377 EVP_PKEY_free(c->pkeys[i].publickey); 378 #endif 379 } 380 OPENSSL_free(c); 381 } 382 383 int ssl_cert_inst(CERT **o) 384 { 385 /* Create a CERT if there isn't already one 386 * (which cannot really happen, as it is initially created in 387 * SSL_CTX_new; but the earlier code usually allows for that one 388 * being non-existant, so we follow that behaviour, as it might 389 * turn out that there actually is a reason for it -- but I'm 390 * not sure that *all* of the existing code could cope with 391 * s->cert being NULL, otherwise we could do without the 392 * initialization in SSL_CTX_new). 393 */ 394 395 if (o == NULL) 396 { 397 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER); 398 return(0); 399 } 400 if (*o == NULL) 401 { 402 if ((*o = ssl_cert_new()) == NULL) 403 { 404 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE); 405 return(0); 406 } 407 } 408 return(1); 409 } 410 411 412 SESS_CERT *ssl_sess_cert_new(void) 413 { 414 SESS_CERT *ret; 415 416 ret = OPENSSL_malloc(sizeof *ret); 417 if (ret == NULL) 418 { 419 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE); 420 return NULL; 421 } 422 423 memset(ret, 0 ,sizeof *ret); 424 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]); 425 ret->references = 1; 426 427 return ret; 428 } 429 430 void ssl_sess_cert_free(SESS_CERT *sc) 431 { 432 int i; 433 434 if (sc == NULL) 435 return; 436 437 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 438 #ifdef REF_PRINT 439 REF_PRINT("SESS_CERT", sc); 440 #endif 441 if (i > 0) 442 return; 443 #ifdef REF_CHECK 444 if (i < 0) 445 { 446 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n"); 447 abort(); /* ok */ 448 } 449 #endif 450 451 /* i == 0 */ 452 if (sc->cert_chain != NULL) 453 sk_X509_pop_free(sc->cert_chain, X509_free); 454 for (i = 0; i < SSL_PKEY_NUM; i++) 455 { 456 if (sc->peer_pkeys[i].x509 != NULL) 457 X509_free(sc->peer_pkeys[i].x509); 458 #if 0 /* We don't have the peer's private key. These lines are just 459 * here as a reminder that we're still using a not-quite-appropriate 460 * data structure. */ 461 if (sc->peer_pkeys[i].privatekey != NULL) 462 EVP_PKEY_free(sc->peer_pkeys[i].privatekey); 463 #endif 464 } 465 466 #ifndef OPENSSL_NO_RSA 467 if (sc->peer_rsa_tmp != NULL) 468 RSA_free(sc->peer_rsa_tmp); 469 #endif 470 #ifndef OPENSSL_NO_DH 471 if (sc->peer_dh_tmp != NULL) 472 DH_free(sc->peer_dh_tmp); 473 #endif 474 #ifndef OPENSSL_NO_ECDH 475 if (sc->peer_ecdh_tmp != NULL) 476 EC_KEY_free(sc->peer_ecdh_tmp); 477 #endif 478 479 OPENSSL_free(sc); 480 } 481 482 int ssl_set_peer_cert_type(SESS_CERT *sc,int type) 483 { 484 sc->peer_cert_type = type; 485 return(1); 486 } 487 488 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk) 489 { 490 X509 *x; 491 int i; 492 X509_STORE_CTX ctx; 493 494 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 495 return(0); 496 497 x=sk_X509_value(sk,0); 498 if(!X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk)) 499 { 500 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB); 501 return(0); 502 } 503 #if 0 504 if (SSL_get_verify_depth(s) >= 0) 505 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s)); 506 #endif 507 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s); 508 509 /* We need to inherit the verify parameters. These can be determined by 510 * the context: if its a server it will verify SSL client certificates 511 * or vice versa. 512 */ 513 514 X509_STORE_CTX_set_default(&ctx, 515 s->server ? "ssl_client" : "ssl_server"); 516 /* Anything non-default in "param" should overwrite anything in the 517 * ctx. 518 */ 519 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); 520 521 if (s->verify_callback) 522 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); 523 524 if (s->ctx->app_verify_callback != NULL) 525 #if 1 /* new with OpenSSL 0.9.7 */ 526 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); 527 #else 528 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */ 529 #endif 530 else 531 { 532 #ifndef OPENSSL_NO_X509_VERIFY 533 i=X509_verify_cert(&ctx); 534 #else 535 i=0; 536 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION; 537 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK); 538 #endif 539 } 540 541 s->verify_result=ctx.error; 542 X509_STORE_CTX_cleanup(&ctx); 543 544 return(i); 545 } 546 547 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list) 548 { 549 if (*ca_list != NULL) 550 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free); 551 552 *ca_list=name_list; 553 } 554 555 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) 556 { 557 int i; 558 STACK_OF(X509_NAME) *ret; 559 X509_NAME *name; 560 561 ret=sk_X509_NAME_new_null(); 562 for (i=0; i<sk_X509_NAME_num(sk); i++) 563 { 564 name=X509_NAME_dup(sk_X509_NAME_value(sk,i)); 565 if ((name == NULL) || !sk_X509_NAME_push(ret,name)) 566 { 567 sk_X509_NAME_pop_free(ret,X509_NAME_free); 568 return(NULL); 569 } 570 } 571 return(ret); 572 } 573 574 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list) 575 { 576 set_client_CA_list(&(s->client_CA),name_list); 577 } 578 579 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list) 580 { 581 set_client_CA_list(&(ctx->client_CA),name_list); 582 } 583 584 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 585 { 586 return(ctx->client_CA); 587 } 588 589 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s) 590 { 591 if (s->type == SSL_ST_CONNECT) 592 { /* we are in the client */ 593 if (((s->version>>8) == SSL3_VERSION_MAJOR) && 594 (s->s3 != NULL)) 595 return(s->s3->tmp.ca_names); 596 else 597 return(NULL); 598 } 599 else 600 { 601 if (s->client_CA != NULL) 602 return(s->client_CA); 603 else 604 return(s->ctx->client_CA); 605 } 606 } 607 608 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x) 609 { 610 X509_NAME *name; 611 612 if (x == NULL) return(0); 613 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL)) 614 return(0); 615 616 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL) 617 return(0); 618 619 if (!sk_X509_NAME_push(*sk,name)) 620 { 621 X509_NAME_free(name); 622 return(0); 623 } 624 return(1); 625 } 626 627 int SSL_add_client_CA(SSL *ssl,X509 *x) 628 { 629 return(add_client_CA(&(ssl->client_CA),x)); 630 } 631 632 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x) 633 { 634 return(add_client_CA(&(ctx->client_CA),x)); 635 } 636 637 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 638 { 639 return(X509_NAME_cmp(*a,*b)); 640 } 641 642 #ifndef OPENSSL_NO_STDIO 643 /*! 644 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 645 * it doesn't really have anything to do with clients (except that a common use 646 * for a stack of CAs is to send it to the client). Actually, it doesn't have 647 * much to do with CAs, either, since it will load any old cert. 648 * \param file the file containing one or more certs. 649 * \return a ::STACK containing the certs. 650 */ 651 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) 652 { 653 BIO *in; 654 X509 *x=NULL; 655 X509_NAME *xn=NULL; 656 STACK_OF(X509_NAME) *ret = NULL,*sk; 657 658 sk=sk_X509_NAME_new(xname_cmp); 659 660 in=BIO_new(BIO_s_file_internal()); 661 662 if ((sk == NULL) || (in == NULL)) 663 { 664 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 665 goto err; 666 } 667 668 if (!BIO_read_filename(in,file)) 669 goto err; 670 671 for (;;) 672 { 673 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 674 break; 675 if (ret == NULL) 676 { 677 ret = sk_X509_NAME_new_null(); 678 if (ret == NULL) 679 { 680 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 681 goto err; 682 } 683 } 684 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 685 /* check for duplicates */ 686 xn=X509_NAME_dup(xn); 687 if (xn == NULL) goto err; 688 if (sk_X509_NAME_find(sk,xn) >= 0) 689 X509_NAME_free(xn); 690 else 691 { 692 sk_X509_NAME_push(sk,xn); 693 sk_X509_NAME_push(ret,xn); 694 } 695 } 696 697 if (0) 698 { 699 err: 700 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free); 701 ret=NULL; 702 } 703 if (sk != NULL) sk_X509_NAME_free(sk); 704 if (in != NULL) BIO_free(in); 705 if (x != NULL) X509_free(x); 706 if (ret != NULL) 707 ERR_clear_error(); 708 return(ret); 709 } 710 #endif 711 712 /*! 713 * Add a file of certs to a stack. 714 * \param stack the stack to add to. 715 * \param file the file to add from. All certs in this file that are not 716 * already in the stack will be added. 717 * \return 1 for success, 0 for failure. Note that in the case of failure some 718 * certs may have been added to \c stack. 719 */ 720 721 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 722 const char *file) 723 { 724 BIO *in; 725 X509 *x=NULL; 726 X509_NAME *xn=NULL; 727 int ret=1; 728 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 729 730 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp); 731 732 in=BIO_new(BIO_s_file_internal()); 733 734 if (in == NULL) 735 { 736 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE); 737 goto err; 738 } 739 740 if (!BIO_read_filename(in,file)) 741 goto err; 742 743 for (;;) 744 { 745 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 746 break; 747 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 748 xn=X509_NAME_dup(xn); 749 if (xn == NULL) goto err; 750 if (sk_X509_NAME_find(stack,xn) >= 0) 751 X509_NAME_free(xn); 752 else 753 sk_X509_NAME_push(stack,xn); 754 } 755 756 if (0) 757 { 758 err: 759 ret=0; 760 } 761 if(in != NULL) 762 BIO_free(in); 763 if(x != NULL) 764 X509_free(x); 765 766 (void)sk_X509_NAME_set_cmp_func(stack,oldcmp); 767 768 return ret; 769 } 770 771 /*! 772 * Add a directory of certs to a stack. 773 * \param stack the stack to append to. 774 * \param dir the directory to append from. All files in this directory will be 775 * examined as potential certs. Any that are acceptable to 776 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be 777 * included. 778 * \return 1 for success, 0 for failure. Note that in the case of failure some 779 * certs may have been added to \c stack. 780 */ 781 782 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 783 const char *dir) 784 { 785 OPENSSL_DIR_CTX *d = NULL; 786 const char *filename; 787 int ret = 0; 788 789 CRYPTO_w_lock(CRYPTO_LOCK_READDIR); 790 791 /* Note that a side effect is that the CAs will be sorted by name */ 792 793 while((filename = OPENSSL_DIR_read(&d, dir))) 794 { 795 char buf[1024]; 796 int r; 797 798 if(strlen(dir)+strlen(filename)+2 > sizeof buf) 799 { 800 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG); 801 goto err; 802 } 803 804 #ifdef OPENSSL_SYS_VMS 805 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename); 806 #else 807 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename); 808 #endif 809 if (r <= 0 || r >= (int)sizeof(buf)) 810 goto err; 811 if(!SSL_add_file_cert_subjects_to_stack(stack,buf)) 812 goto err; 813 } 814 815 if (errno) 816 { 817 SYSerr(SYS_F_OPENDIR, get_last_sys_error()); 818 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')"); 819 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); 820 goto err; 821 } 822 823 ret = 1; 824 825 err: 826 if (d) OPENSSL_DIR_end(&d); 827 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR); 828 return ret; 829 } 830 831
