1 /*! \file ssl/ssl_cert.c */ 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 * Copyright (c) 1999 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@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 /* ==================================================================== 107 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 108 * ECC cipher suite support in OpenSSL originally developed by 109 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 110 */ 111 112 #include <stdio.h> 113 114 #include "e_os.h" 115 #ifndef NO_SYS_TYPES_H 116 # include <sys/types.h> 117 #endif 118 119 #include "o_dir.h" 120 #include <openssl/objects.h> 121 #include <openssl/bio.h> 122 #include <openssl/pem.h> 123 #include <openssl/x509v3.h> 124 #ifndef OPENSSL_NO_DH 125 #include <openssl/dh.h> 126 #endif 127 #include <openssl/bn.h> 128 #include "ssl_locl.h" 129 130 int SSL_get_ex_data_X509_STORE_CTX_idx(void) 131 { 132 static volatile int ssl_x509_store_ctx_idx= -1; 133 134 if (ssl_x509_store_ctx_idx < 0) 135 { 136 /* any write lock will do; usually this branch 137 * will only be taken once anyway */ 138 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 139 140 if (ssl_x509_store_ctx_idx < 0) 141 { 142 ssl_x509_store_ctx_idx=X509_STORE_CTX_get_ex_new_index( 143 0,"SSL for verify callback",NULL,NULL,NULL); 144 } 145 146 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 147 } 148 return ssl_x509_store_ctx_idx; 149 } 150 151 CERT *ssl_cert_new(void) 152 { 153 CERT *ret; 154 155 ret=(CERT *)OPENSSL_malloc(sizeof(CERT)); 156 if (ret == NULL) 157 { 158 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE); 159 return(NULL); 160 } 161 memset(ret,0,sizeof(CERT)); 162 163 ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]); 164 ret->references=1; 165 166 return(ret); 167 } 168 169 CERT *ssl_cert_dup(CERT *cert) 170 { 171 CERT *ret; 172 int i; 173 174 ret = (CERT *)OPENSSL_malloc(sizeof(CERT)); 175 if (ret == NULL) 176 { 177 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); 178 return(NULL); 179 } 180 181 memset(ret, 0, sizeof(CERT)); 182 183 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]]; 184 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys), 185 * if you find that more readable */ 186 187 ret->valid = cert->valid; 188 ret->mask = cert->mask; 189 ret->export_mask = cert->export_mask; 190 191 #ifndef OPENSSL_NO_RSA 192 if (cert->rsa_tmp != NULL) 193 { 194 RSA_up_ref(cert->rsa_tmp); 195 ret->rsa_tmp = cert->rsa_tmp; 196 } 197 ret->rsa_tmp_cb = cert->rsa_tmp_cb; 198 #endif 199 200 #ifndef OPENSSL_NO_DH 201 if (cert->dh_tmp != NULL) 202 { 203 ret->dh_tmp = DHparams_dup(cert->dh_tmp); 204 if (ret->dh_tmp == NULL) 205 { 206 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB); 207 goto err; 208 } 209 if (cert->dh_tmp->priv_key) 210 { 211 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key); 212 if (!b) 213 { 214 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 215 goto err; 216 } 217 ret->dh_tmp->priv_key = b; 218 } 219 if (cert->dh_tmp->pub_key) 220 { 221 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key); 222 if (!b) 223 { 224 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 225 goto err; 226 } 227 ret->dh_tmp->pub_key = b; 228 } 229 } 230 ret->dh_tmp_cb = cert->dh_tmp_cb; 231 #endif 232 233 #ifndef OPENSSL_NO_ECDH 234 if (cert->ecdh_tmp) 235 { 236 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp); 237 if (ret->ecdh_tmp == NULL) 238 { 239 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB); 240 goto err; 241 } 242 } 243 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb; 244 #endif 245 246 for (i = 0; i < SSL_PKEY_NUM; i++) 247 { 248 if (cert->pkeys[i].x509 != NULL) 249 { 250 ret->pkeys[i].x509 = cert->pkeys[i].x509; 251 CRYPTO_add(&ret->pkeys[i].x509->references, 1, 252 CRYPTO_LOCK_X509); 253 } 254 255 if (cert->pkeys[i].privatekey != NULL) 256 { 257 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 258 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1, 259 CRYPTO_LOCK_EVP_PKEY); 260 261 switch(i) 262 { 263 /* If there was anything special to do for 264 * certain types of keys, we'd do it here. 265 * (Nothing at the moment, I think.) */ 266 267 case SSL_PKEY_RSA_ENC: 268 case SSL_PKEY_RSA_SIGN: 269 /* We have an RSA key. */ 270 break; 271 272 case SSL_PKEY_DSA_SIGN: 273 /* We have a DSA key. */ 274 break; 275 276 case SSL_PKEY_DH_RSA: 277 case SSL_PKEY_DH_DSA: 278 /* We have a DH key. */ 279 break; 280 281 case SSL_PKEY_ECC: 282 /* We have an ECC key */ 283 break; 284 285 default: 286 /* Can't happen. */ 287 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG); 288 } 289 } 290 } 291 292 /* ret->extra_certs *should* exist, but currently the own certificate 293 * chain is held inside SSL_CTX */ 294 295 ret->references=1; 296 297 return(ret); 298 299 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH) 300 err: 301 #endif 302 #ifndef OPENSSL_NO_RSA 303 if (ret->rsa_tmp != NULL) 304 RSA_free(ret->rsa_tmp); 305 #endif 306 #ifndef OPENSSL_NO_DH 307 if (ret->dh_tmp != NULL) 308 DH_free(ret->dh_tmp); 309 #endif 310 #ifndef OPENSSL_NO_ECDH 311 if (ret->ecdh_tmp != NULL) 312 EC_KEY_free(ret->ecdh_tmp); 313 #endif 314 315 for (i = 0; i < SSL_PKEY_NUM; i++) 316 { 317 if (ret->pkeys[i].x509 != NULL) 318 X509_free(ret->pkeys[i].x509); 319 if (ret->pkeys[i].privatekey != NULL) 320 EVP_PKEY_free(ret->pkeys[i].privatekey); 321 } 322 323 return NULL; 324 } 325 326 327 void ssl_cert_free(CERT *c) 328 { 329 int i; 330 331 if(c == NULL) 332 return; 333 334 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT); 335 #ifdef REF_PRINT 336 REF_PRINT("CERT",c); 337 #endif 338 if (i > 0) return; 339 #ifdef REF_CHECK 340 if (i < 0) 341 { 342 fprintf(stderr,"ssl_cert_free, bad reference count\n"); 343 abort(); /* ok */ 344 } 345 #endif 346 347 #ifndef OPENSSL_NO_RSA 348 if (c->rsa_tmp) RSA_free(c->rsa_tmp); 349 #endif 350 #ifndef OPENSSL_NO_DH 351 if (c->dh_tmp) DH_free(c->dh_tmp); 352 #endif 353 #ifndef OPENSSL_NO_ECDH 354 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp); 355 #endif 356 357 for (i=0; i<SSL_PKEY_NUM; i++) 358 { 359 if (c->pkeys[i].x509 != NULL) 360 X509_free(c->pkeys[i].x509); 361 if (c->pkeys[i].privatekey != NULL) 362 EVP_PKEY_free(c->pkeys[i].privatekey); 363 #if 0 364 if (c->pkeys[i].publickey != NULL) 365 EVP_PKEY_free(c->pkeys[i].publickey); 366 #endif 367 } 368 OPENSSL_free(c); 369 } 370 371 int ssl_cert_inst(CERT **o) 372 { 373 /* Create a CERT if there isn't already one 374 * (which cannot really happen, as it is initially created in 375 * SSL_CTX_new; but the earlier code usually allows for that one 376 * being non-existant, so we follow that behaviour, as it might 377 * turn out that there actually is a reason for it -- but I'm 378 * not sure that *all* of the existing code could cope with 379 * s->cert being NULL, otherwise we could do without the 380 * initialization in SSL_CTX_new). 381 */ 382 383 if (o == NULL) 384 { 385 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER); 386 return(0); 387 } 388 if (*o == NULL) 389 { 390 if ((*o = ssl_cert_new()) == NULL) 391 { 392 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE); 393 return(0); 394 } 395 } 396 return(1); 397 } 398 399 400 SESS_CERT *ssl_sess_cert_new(void) 401 { 402 SESS_CERT *ret; 403 404 ret = OPENSSL_malloc(sizeof *ret); 405 if (ret == NULL) 406 { 407 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE); 408 return NULL; 409 } 410 411 memset(ret, 0 ,sizeof *ret); 412 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]); 413 ret->references = 1; 414 415 return ret; 416 } 417 418 void ssl_sess_cert_free(SESS_CERT *sc) 419 { 420 int i; 421 422 if (sc == NULL) 423 return; 424 425 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 426 #ifdef REF_PRINT 427 REF_PRINT("SESS_CERT", sc); 428 #endif 429 if (i > 0) 430 return; 431 #ifdef REF_CHECK 432 if (i < 0) 433 { 434 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n"); 435 abort(); /* ok */ 436 } 437 #endif 438 439 /* i == 0 */ 440 if (sc->cert_chain != NULL) 441 sk_X509_pop_free(sc->cert_chain, X509_free); 442 for (i = 0; i < SSL_PKEY_NUM; i++) 443 { 444 if (sc->peer_pkeys[i].x509 != NULL) 445 X509_free(sc->peer_pkeys[i].x509); 446 #if 0 /* We don't have the peer's private key. These lines are just 447 * here as a reminder that we're still using a not-quite-appropriate 448 * data structure. */ 449 if (sc->peer_pkeys[i].privatekey != NULL) 450 EVP_PKEY_free(sc->peer_pkeys[i].privatekey); 451 #endif 452 } 453 454 #ifndef OPENSSL_NO_RSA 455 if (sc->peer_rsa_tmp != NULL) 456 RSA_free(sc->peer_rsa_tmp); 457 #endif 458 #ifndef OPENSSL_NO_DH 459 if (sc->peer_dh_tmp != NULL) 460 DH_free(sc->peer_dh_tmp); 461 #endif 462 #ifndef OPENSSL_NO_ECDH 463 if (sc->peer_ecdh_tmp != NULL) 464 EC_KEY_free(sc->peer_ecdh_tmp); 465 #endif 466 467 OPENSSL_free(sc); 468 } 469 470 int ssl_set_peer_cert_type(SESS_CERT *sc,int type) 471 { 472 sc->peer_cert_type = type; 473 return(1); 474 } 475 476 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk) 477 { 478 X509 *x; 479 int i; 480 X509_STORE_CTX ctx; 481 482 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 483 return(0); 484 485 x=sk_X509_value(sk,0); 486 if(!X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk)) 487 { 488 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB); 489 return(0); 490 } 491 if (s->param) 492 X509_VERIFY_PARAM_inherit(X509_STORE_CTX_get0_param(&ctx), 493 s->param); 494 #if 0 495 if (SSL_get_verify_depth(s) >= 0) 496 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s)); 497 #endif 498 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s); 499 500 /* We need to inherit the verify parameters. These can be determined by 501 * the context: if its a server it will verify SSL client certificates 502 * or vice versa. 503 */ 504 505 X509_STORE_CTX_set_default(&ctx, 506 s->server ? "ssl_client" : "ssl_server"); 507 508 if (s->verify_callback) 509 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); 510 511 if (s->ctx->app_verify_callback != NULL) 512 #if 1 /* new with OpenSSL 0.9.7 */ 513 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); 514 #else 515 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */ 516 #endif 517 else 518 { 519 #ifndef OPENSSL_NO_X509_VERIFY 520 i=X509_verify_cert(&ctx); 521 #else 522 i=0; 523 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION; 524 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK); 525 #endif 526 } 527 528 s->verify_result=ctx.error; 529 X509_STORE_CTX_cleanup(&ctx); 530 531 return(i); 532 } 533 534 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list) 535 { 536 if (*ca_list != NULL) 537 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free); 538 539 *ca_list=name_list; 540 } 541 542 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) 543 { 544 int i; 545 STACK_OF(X509_NAME) *ret; 546 X509_NAME *name; 547 548 ret=sk_X509_NAME_new_null(); 549 for (i=0; i<sk_X509_NAME_num(sk); i++) 550 { 551 name=X509_NAME_dup(sk_X509_NAME_value(sk,i)); 552 if ((name == NULL) || !sk_X509_NAME_push(ret,name)) 553 { 554 sk_X509_NAME_pop_free(ret,X509_NAME_free); 555 return(NULL); 556 } 557 } 558 return(ret); 559 } 560 561 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list) 562 { 563 set_client_CA_list(&(s->client_CA),name_list); 564 } 565 566 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list) 567 { 568 set_client_CA_list(&(ctx->client_CA),name_list); 569 } 570 571 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 572 { 573 return(ctx->client_CA); 574 } 575 576 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s) 577 { 578 if (s->type == SSL_ST_CONNECT) 579 { /* we are in the client */ 580 if (((s->version>>8) == SSL3_VERSION_MAJOR) && 581 (s->s3 != NULL)) 582 return(s->s3->tmp.ca_names); 583 else 584 return(NULL); 585 } 586 else 587 { 588 if (s->client_CA != NULL) 589 return(s->client_CA); 590 else 591 return(s->ctx->client_CA); 592 } 593 } 594 595 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x) 596 { 597 X509_NAME *name; 598 599 if (x == NULL) return(0); 600 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL)) 601 return(0); 602 603 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL) 604 return(0); 605 606 if (!sk_X509_NAME_push(*sk,name)) 607 { 608 X509_NAME_free(name); 609 return(0); 610 } 611 return(1); 612 } 613 614 int SSL_add_client_CA(SSL *ssl,X509 *x) 615 { 616 return(add_client_CA(&(ssl->client_CA),x)); 617 } 618 619 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x) 620 { 621 return(add_client_CA(&(ctx->client_CA),x)); 622 } 623 624 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 625 { 626 return(X509_NAME_cmp(*a,*b)); 627 } 628 629 #ifndef OPENSSL_NO_STDIO 630 /*! 631 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 632 * it doesn't really have anything to do with clients (except that a common use 633 * for a stack of CAs is to send it to the client). Actually, it doesn't have 634 * much to do with CAs, either, since it will load any old cert. 635 * \param file the file containing one or more certs. 636 * \return a ::STACK containing the certs. 637 */ 638 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) 639 { 640 BIO *in; 641 X509 *x=NULL; 642 X509_NAME *xn=NULL; 643 STACK_OF(X509_NAME) *ret = NULL,*sk; 644 645 sk=sk_X509_NAME_new(xname_cmp); 646 647 in=BIO_new(BIO_s_file_internal()); 648 649 if ((sk == NULL) || (in == NULL)) 650 { 651 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 652 goto err; 653 } 654 655 if (!BIO_read_filename(in,file)) 656 goto err; 657 658 for (;;) 659 { 660 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 661 break; 662 if (ret == NULL) 663 { 664 ret = sk_X509_NAME_new_null(); 665 if (ret == NULL) 666 { 667 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 668 goto err; 669 } 670 } 671 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 672 /* check for duplicates */ 673 xn=X509_NAME_dup(xn); 674 if (xn == NULL) goto err; 675 if (sk_X509_NAME_find(sk,xn) >= 0) 676 X509_NAME_free(xn); 677 else 678 { 679 sk_X509_NAME_push(sk,xn); 680 sk_X509_NAME_push(ret,xn); 681 } 682 } 683 684 if (0) 685 { 686 err: 687 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free); 688 ret=NULL; 689 } 690 if (sk != NULL) sk_X509_NAME_free(sk); 691 if (in != NULL) BIO_free(in); 692 if (x != NULL) X509_free(x); 693 if (ret != NULL) 694 ERR_clear_error(); 695 return(ret); 696 } 697 #endif 698 699 /*! 700 * Add a file of certs to a stack. 701 * \param stack the stack to add to. 702 * \param file the file to add from. All certs in this file that are not 703 * already in the stack will be added. 704 * \return 1 for success, 0 for failure. Note that in the case of failure some 705 * certs may have been added to \c stack. 706 */ 707 708 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 709 const char *file) 710 { 711 BIO *in; 712 X509 *x=NULL; 713 X509_NAME *xn=NULL; 714 int ret=1; 715 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 716 717 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp); 718 719 in=BIO_new(BIO_s_file_internal()); 720 721 if (in == NULL) 722 { 723 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE); 724 goto err; 725 } 726 727 if (!BIO_read_filename(in,file)) 728 goto err; 729 730 for (;;) 731 { 732 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 733 break; 734 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 735 xn=X509_NAME_dup(xn); 736 if (xn == NULL) goto err; 737 if (sk_X509_NAME_find(stack,xn) >= 0) 738 X509_NAME_free(xn); 739 else 740 sk_X509_NAME_push(stack,xn); 741 } 742 743 if (0) 744 { 745 err: 746 ret=0; 747 } 748 if(in != NULL) 749 BIO_free(in); 750 if(x != NULL) 751 X509_free(x); 752 753 sk_X509_NAME_set_cmp_func(stack,oldcmp); 754 755 return ret; 756 } 757 758 /*! 759 * Add a directory of certs to a stack. 760 * \param stack the stack to append to. 761 * \param dir the directory to append from. All files in this directory will be 762 * examined as potential certs. Any that are acceptable to 763 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be 764 * included. 765 * \return 1 for success, 0 for failure. Note that in the case of failure some 766 * certs may have been added to \c stack. 767 */ 768 769 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 770 const char *dir) 771 { 772 OPENSSL_DIR_CTX *d = NULL; 773 const char *filename; 774 int ret = 0; 775 776 CRYPTO_w_lock(CRYPTO_LOCK_READDIR); 777 778 /* Note that a side effect is that the CAs will be sorted by name */ 779 780 while((filename = OPENSSL_DIR_read(&d, dir))) 781 { 782 char buf[1024]; 783 int r; 784 785 if(strlen(dir)+strlen(filename)+2 > sizeof buf) 786 { 787 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG); 788 goto err; 789 } 790 791 #ifdef OPENSSL_SYS_VMS 792 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename); 793 #else 794 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename); 795 #endif 796 if (r <= 0 || r >= (int)sizeof(buf)) 797 goto err; 798 if(!SSL_add_file_cert_subjects_to_stack(stack,buf)) 799 goto err; 800 } 801 802 if (errno) 803 { 804 SYSerr(SYS_F_OPENDIR, get_last_sys_error()); 805 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')"); 806 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); 807 goto err; 808 } 809 810 ret = 1; 811 812 err: 813 if (d) OPENSSL_DIR_end(&d); 814 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR); 815 return ret; 816 } 817 818