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) 1998-2007 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_k = cert->mask_k; 201 ret->mask_a = cert->mask_a; 202 ret->export_mask_k = cert->export_mask_k; 203 ret->export_mask_a = cert->export_mask_a; 204 205 #ifndef OPENSSL_NO_RSA 206 if (cert->rsa_tmp != NULL) 207 { 208 RSA_up_ref(cert->rsa_tmp); 209 ret->rsa_tmp = cert->rsa_tmp; 210 } 211 ret->rsa_tmp_cb = cert->rsa_tmp_cb; 212 #endif 213 214 #ifndef OPENSSL_NO_DH 215 if (cert->dh_tmp != NULL) 216 { 217 ret->dh_tmp = DHparams_dup(cert->dh_tmp); 218 if (ret->dh_tmp == NULL) 219 { 220 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB); 221 goto err; 222 } 223 if (cert->dh_tmp->priv_key) 224 { 225 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key); 226 if (!b) 227 { 228 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 229 goto err; 230 } 231 ret->dh_tmp->priv_key = b; 232 } 233 if (cert->dh_tmp->pub_key) 234 { 235 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key); 236 if (!b) 237 { 238 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 239 goto err; 240 } 241 ret->dh_tmp->pub_key = b; 242 } 243 } 244 ret->dh_tmp_cb = cert->dh_tmp_cb; 245 #endif 246 247 #ifndef OPENSSL_NO_ECDH 248 if (cert->ecdh_tmp) 249 { 250 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp); 251 if (ret->ecdh_tmp == NULL) 252 { 253 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB); 254 goto err; 255 } 256 } 257 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb; 258 #endif 259 260 for (i = 0; i < SSL_PKEY_NUM; i++) 261 { 262 if (cert->pkeys[i].x509 != NULL) 263 { 264 ret->pkeys[i].x509 = cert->pkeys[i].x509; 265 CRYPTO_add(&ret->pkeys[i].x509->references, 1, 266 CRYPTO_LOCK_X509); 267 } 268 269 if (cert->pkeys[i].privatekey != NULL) 270 { 271 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 272 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1, 273 CRYPTO_LOCK_EVP_PKEY); 274 275 switch(i) 276 { 277 /* If there was anything special to do for 278 * certain types of keys, we'd do it here. 279 * (Nothing at the moment, I think.) */ 280 281 case SSL_PKEY_RSA_ENC: 282 case SSL_PKEY_RSA_SIGN: 283 /* We have an RSA key. */ 284 break; 285 286 case SSL_PKEY_DSA_SIGN: 287 /* We have a DSA key. */ 288 break; 289 290 case SSL_PKEY_DH_RSA: 291 case SSL_PKEY_DH_DSA: 292 /* We have a DH key. */ 293 break; 294 295 case SSL_PKEY_ECC: 296 /* We have an ECC key */ 297 break; 298 299 default: 300 /* Can't happen. */ 301 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG); 302 } 303 } 304 } 305 306 /* ret->extra_certs *should* exist, but currently the own certificate 307 * chain is held inside SSL_CTX */ 308 309 ret->references=1; 310 311 return(ret); 312 313 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH) 314 err: 315 #endif 316 #ifndef OPENSSL_NO_RSA 317 if (ret->rsa_tmp != NULL) 318 RSA_free(ret->rsa_tmp); 319 #endif 320 #ifndef OPENSSL_NO_DH 321 if (ret->dh_tmp != NULL) 322 DH_free(ret->dh_tmp); 323 #endif 324 #ifndef OPENSSL_NO_ECDH 325 if (ret->ecdh_tmp != NULL) 326 EC_KEY_free(ret->ecdh_tmp); 327 #endif 328 329 for (i = 0; i < SSL_PKEY_NUM; i++) 330 { 331 if (ret->pkeys[i].x509 != NULL) 332 X509_free(ret->pkeys[i].x509); 333 if (ret->pkeys[i].privatekey != NULL) 334 EVP_PKEY_free(ret->pkeys[i].privatekey); 335 } 336 337 return NULL; 338 } 339 340 341 void ssl_cert_free(CERT *c) 342 { 343 int i; 344 345 if(c == NULL) 346 return; 347 348 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT); 349 #ifdef REF_PRINT 350 REF_PRINT("CERT",c); 351 #endif 352 if (i > 0) return; 353 #ifdef REF_CHECK 354 if (i < 0) 355 { 356 fprintf(stderr,"ssl_cert_free, bad reference count\n"); 357 abort(); /* ok */ 358 } 359 #endif 360 361 #ifndef OPENSSL_NO_RSA 362 if (c->rsa_tmp) RSA_free(c->rsa_tmp); 363 #endif 364 #ifndef OPENSSL_NO_DH 365 if (c->dh_tmp) DH_free(c->dh_tmp); 366 #endif 367 #ifndef OPENSSL_NO_ECDH 368 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp); 369 #endif 370 371 for (i=0; i<SSL_PKEY_NUM; i++) 372 { 373 if (c->pkeys[i].x509 != NULL) 374 X509_free(c->pkeys[i].x509); 375 if (c->pkeys[i].privatekey != NULL) 376 EVP_PKEY_free(c->pkeys[i].privatekey); 377 #if 0 378 if (c->pkeys[i].publickey != NULL) 379 EVP_PKEY_free(c->pkeys[i].publickey); 380 #endif 381 } 382 OPENSSL_free(c); 383 } 384 385 int ssl_cert_inst(CERT **o) 386 { 387 /* Create a CERT if there isn't already one 388 * (which cannot really happen, as it is initially created in 389 * SSL_CTX_new; but the earlier code usually allows for that one 390 * being non-existant, so we follow that behaviour, as it might 391 * turn out that there actually is a reason for it -- but I'm 392 * not sure that *all* of the existing code could cope with 393 * s->cert being NULL, otherwise we could do without the 394 * initialization in SSL_CTX_new). 395 */ 396 397 if (o == NULL) 398 { 399 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER); 400 return(0); 401 } 402 if (*o == NULL) 403 { 404 if ((*o = ssl_cert_new()) == NULL) 405 { 406 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE); 407 return(0); 408 } 409 } 410 return(1); 411 } 412 413 414 SESS_CERT *ssl_sess_cert_new(void) 415 { 416 SESS_CERT *ret; 417 418 ret = OPENSSL_malloc(sizeof *ret); 419 if (ret == NULL) 420 { 421 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE); 422 return NULL; 423 } 424 425 memset(ret, 0 ,sizeof *ret); 426 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]); 427 ret->references = 1; 428 429 return ret; 430 } 431 432 void ssl_sess_cert_free(SESS_CERT *sc) 433 { 434 int i; 435 436 if (sc == NULL) 437 return; 438 439 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 440 #ifdef REF_PRINT 441 REF_PRINT("SESS_CERT", sc); 442 #endif 443 if (i > 0) 444 return; 445 #ifdef REF_CHECK 446 if (i < 0) 447 { 448 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n"); 449 abort(); /* ok */ 450 } 451 #endif 452 453 /* i == 0 */ 454 if (sc->cert_chain != NULL) 455 sk_X509_pop_free(sc->cert_chain, X509_free); 456 for (i = 0; i < SSL_PKEY_NUM; i++) 457 { 458 if (sc->peer_pkeys[i].x509 != NULL) 459 X509_free(sc->peer_pkeys[i].x509); 460 #if 0 /* We don't have the peer's private key. These lines are just 461 * here as a reminder that we're still using a not-quite-appropriate 462 * data structure. */ 463 if (sc->peer_pkeys[i].privatekey != NULL) 464 EVP_PKEY_free(sc->peer_pkeys[i].privatekey); 465 #endif 466 } 467 468 #ifndef OPENSSL_NO_RSA 469 if (sc->peer_rsa_tmp != NULL) 470 RSA_free(sc->peer_rsa_tmp); 471 #endif 472 #ifndef OPENSSL_NO_DH 473 if (sc->peer_dh_tmp != NULL) 474 DH_free(sc->peer_dh_tmp); 475 #endif 476 #ifndef OPENSSL_NO_ECDH 477 if (sc->peer_ecdh_tmp != NULL) 478 EC_KEY_free(sc->peer_ecdh_tmp); 479 #endif 480 481 OPENSSL_free(sc); 482 } 483 484 int ssl_set_peer_cert_type(SESS_CERT *sc,int type) 485 { 486 sc->peer_cert_type = type; 487 return(1); 488 } 489 490 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk) 491 { 492 X509 *x; 493 int i; 494 X509_STORE_CTX ctx; 495 496 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 497 return(0); 498 499 x=sk_X509_value(sk,0); 500 if(!X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk)) 501 { 502 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB); 503 return(0); 504 } 505 #if 0 506 if (SSL_get_verify_depth(s) >= 0) 507 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s)); 508 #endif 509 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s); 510 511 /* We need to inherit the verify parameters. These can be determined by 512 * the context: if its a server it will verify SSL client certificates 513 * or vice versa. 514 */ 515 516 X509_STORE_CTX_set_default(&ctx, 517 s->server ? "ssl_client" : "ssl_server"); 518 /* Anything non-default in "param" should overwrite anything in the 519 * ctx. 520 */ 521 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); 522 523 if (s->verify_callback) 524 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); 525 526 if (s->ctx->app_verify_callback != NULL) 527 #if 1 /* new with OpenSSL 0.9.7 */ 528 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); 529 #else 530 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */ 531 #endif 532 else 533 { 534 #ifndef OPENSSL_NO_X509_VERIFY 535 i=X509_verify_cert(&ctx); 536 #else 537 i=0; 538 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION; 539 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK); 540 #endif 541 } 542 543 s->verify_result=ctx.error; 544 X509_STORE_CTX_cleanup(&ctx); 545 546 return(i); 547 } 548 549 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list) 550 { 551 if (*ca_list != NULL) 552 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free); 553 554 *ca_list=name_list; 555 } 556 557 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) 558 { 559 int i; 560 STACK_OF(X509_NAME) *ret; 561 X509_NAME *name; 562 563 ret=sk_X509_NAME_new_null(); 564 for (i=0; i<sk_X509_NAME_num(sk); i++) 565 { 566 name=X509_NAME_dup(sk_X509_NAME_value(sk,i)); 567 if ((name == NULL) || !sk_X509_NAME_push(ret,name)) 568 { 569 sk_X509_NAME_pop_free(ret,X509_NAME_free); 570 return(NULL); 571 } 572 } 573 return(ret); 574 } 575 576 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list) 577 { 578 set_client_CA_list(&(s->client_CA),name_list); 579 } 580 581 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list) 582 { 583 set_client_CA_list(&(ctx->client_CA),name_list); 584 } 585 586 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 587 { 588 return(ctx->client_CA); 589 } 590 591 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s) 592 { 593 if (s->type == SSL_ST_CONNECT) 594 { /* we are in the client */ 595 if (((s->version>>8) == SSL3_VERSION_MAJOR) && 596 (s->s3 != NULL)) 597 return(s->s3->tmp.ca_names); 598 else 599 return(NULL); 600 } 601 else 602 { 603 if (s->client_CA != NULL) 604 return(s->client_CA); 605 else 606 return(s->ctx->client_CA); 607 } 608 } 609 610 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x) 611 { 612 X509_NAME *name; 613 614 if (x == NULL) return(0); 615 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL)) 616 return(0); 617 618 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL) 619 return(0); 620 621 if (!sk_X509_NAME_push(*sk,name)) 622 { 623 X509_NAME_free(name); 624 return(0); 625 } 626 return(1); 627 } 628 629 int SSL_add_client_CA(SSL *ssl,X509 *x) 630 { 631 return(add_client_CA(&(ssl->client_CA),x)); 632 } 633 634 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x) 635 { 636 return(add_client_CA(&(ctx->client_CA),x)); 637 } 638 639 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 640 { 641 return(X509_NAME_cmp(*a,*b)); 642 } 643 644 #ifndef OPENSSL_NO_STDIO 645 /*! 646 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 647 * it doesn't really have anything to do with clients (except that a common use 648 * for a stack of CAs is to send it to the client). Actually, it doesn't have 649 * much to do with CAs, either, since it will load any old cert. 650 * \param file the file containing one or more certs. 651 * \return a ::STACK containing the certs. 652 */ 653 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) 654 { 655 BIO *in; 656 X509 *x=NULL; 657 X509_NAME *xn=NULL; 658 STACK_OF(X509_NAME) *ret = NULL,*sk; 659 660 sk=sk_X509_NAME_new(xname_cmp); 661 662 in=BIO_new(BIO_s_file_internal()); 663 664 if ((sk == NULL) || (in == NULL)) 665 { 666 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 667 goto err; 668 } 669 670 if (!BIO_read_filename(in,file)) 671 goto err; 672 673 for (;;) 674 { 675 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 676 break; 677 if (ret == NULL) 678 { 679 ret = sk_X509_NAME_new_null(); 680 if (ret == NULL) 681 { 682 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 683 goto err; 684 } 685 } 686 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 687 /* check for duplicates */ 688 xn=X509_NAME_dup(xn); 689 if (xn == NULL) goto err; 690 if (sk_X509_NAME_find(sk,xn) >= 0) 691 X509_NAME_free(xn); 692 else 693 { 694 sk_X509_NAME_push(sk,xn); 695 sk_X509_NAME_push(ret,xn); 696 } 697 } 698 699 if (0) 700 { 701 err: 702 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free); 703 ret=NULL; 704 } 705 if (sk != NULL) sk_X509_NAME_free(sk); 706 if (in != NULL) BIO_free(in); 707 if (x != NULL) X509_free(x); 708 if (ret != NULL) 709 ERR_clear_error(); 710 return(ret); 711 } 712 #endif 713 714 /*! 715 * Add a file of certs to a stack. 716 * \param stack the stack to add to. 717 * \param file the file to add from. All certs in this file that are not 718 * already in the stack will be added. 719 * \return 1 for success, 0 for failure. Note that in the case of failure some 720 * certs may have been added to \c stack. 721 */ 722 723 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 724 const char *file) 725 { 726 BIO *in; 727 X509 *x=NULL; 728 X509_NAME *xn=NULL; 729 int ret=1; 730 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 731 732 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp); 733 734 in=BIO_new(BIO_s_file_internal()); 735 736 if (in == NULL) 737 { 738 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE); 739 goto err; 740 } 741 742 if (!BIO_read_filename(in,file)) 743 goto err; 744 745 for (;;) 746 { 747 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 748 break; 749 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 750 xn=X509_NAME_dup(xn); 751 if (xn == NULL) goto err; 752 if (sk_X509_NAME_find(stack,xn) >= 0) 753 X509_NAME_free(xn); 754 else 755 sk_X509_NAME_push(stack,xn); 756 } 757 758 ERR_clear_error(); 759 760 if (0) 761 { 762 err: 763 ret=0; 764 } 765 if(in != NULL) 766 BIO_free(in); 767 if(x != NULL) 768 X509_free(x); 769 770 (void)sk_X509_NAME_set_cmp_func(stack,oldcmp); 771 772 return ret; 773 } 774 775 /*! 776 * Add a directory of certs to a stack. 777 * \param stack the stack to append to. 778 * \param dir the directory to append from. All files in this directory will be 779 * examined as potential certs. Any that are acceptable to 780 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be 781 * included. 782 * \return 1 for success, 0 for failure. Note that in the case of failure some 783 * certs may have been added to \c stack. 784 */ 785 786 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 787 const char *dir) 788 { 789 OPENSSL_DIR_CTX *d = NULL; 790 const char *filename; 791 int ret = 0; 792 793 CRYPTO_w_lock(CRYPTO_LOCK_READDIR); 794 795 /* Note that a side effect is that the CAs will be sorted by name */ 796 797 while((filename = OPENSSL_DIR_read(&d, dir))) 798 { 799 char buf[1024]; 800 int r; 801 802 if(strlen(dir)+strlen(filename)+2 > sizeof buf) 803 { 804 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG); 805 goto err; 806 } 807 808 #ifdef OPENSSL_SYS_VMS 809 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename); 810 #else 811 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename); 812 #endif 813 if (r <= 0 || r >= (int)sizeof(buf)) 814 goto err; 815 if(!SSL_add_file_cert_subjects_to_stack(stack,buf)) 816 goto err; 817 } 818 819 if (errno) 820 { 821 SYSerr(SYS_F_OPENDIR, get_last_sys_error()); 822 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')"); 823 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); 824 goto err; 825 } 826 827 ret = 1; 828 829 err: 830 if (d) OPENSSL_DIR_end(&d); 831 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR); 832 return ret; 833 } 834 835
