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 return(ret); 178 } 179 180 CERT *ssl_cert_dup(CERT *cert) 181 { 182 CERT *ret; 183 int i; 184 185 ret = (CERT *)OPENSSL_malloc(sizeof(CERT)); 186 if (ret == NULL) 187 { 188 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); 189 return(NULL); 190 } 191 192 memset(ret, 0, sizeof(CERT)); 193 194 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]]; 195 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys), 196 * if you find that more readable */ 197 198 ret->valid = cert->valid; 199 ret->mask_k = cert->mask_k; 200 ret->mask_a = cert->mask_a; 201 ret->export_mask_k = cert->export_mask_k; 202 ret->export_mask_a = cert->export_mask_a; 203 204 #ifndef OPENSSL_NO_RSA 205 if (cert->rsa_tmp != NULL) 206 { 207 RSA_up_ref(cert->rsa_tmp); 208 ret->rsa_tmp = cert->rsa_tmp; 209 } 210 ret->rsa_tmp_cb = cert->rsa_tmp_cb; 211 #endif 212 213 #ifndef OPENSSL_NO_DH 214 if (cert->dh_tmp != NULL) 215 { 216 ret->dh_tmp = DHparams_dup(cert->dh_tmp); 217 if (ret->dh_tmp == NULL) 218 { 219 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB); 220 goto err; 221 } 222 if (cert->dh_tmp->priv_key) 223 { 224 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key); 225 if (!b) 226 { 227 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 228 goto err; 229 } 230 ret->dh_tmp->priv_key = b; 231 } 232 if (cert->dh_tmp->pub_key) 233 { 234 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key); 235 if (!b) 236 { 237 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 238 goto err; 239 } 240 ret->dh_tmp->pub_key = b; 241 } 242 } 243 ret->dh_tmp_cb = cert->dh_tmp_cb; 244 #endif 245 246 #ifndef OPENSSL_NO_ECDH 247 if (cert->ecdh_tmp) 248 { 249 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp); 250 if (ret->ecdh_tmp == NULL) 251 { 252 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB); 253 goto err; 254 } 255 } 256 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb; 257 #endif 258 259 for (i = 0; i < SSL_PKEY_NUM; i++) 260 { 261 if (cert->pkeys[i].x509 != NULL) 262 { 263 ret->pkeys[i].x509 = cert->pkeys[i].x509; 264 CRYPTO_add(&ret->pkeys[i].x509->references, 1, 265 CRYPTO_LOCK_X509); 266 } 267 268 if (cert->pkeys[i].privatekey != NULL) 269 { 270 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 271 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1, 272 CRYPTO_LOCK_EVP_PKEY); 273 274 switch(i) 275 { 276 /* If there was anything special to do for 277 * certain types of keys, we'd do it here. 278 * (Nothing at the moment, I think.) */ 279 280 case SSL_PKEY_RSA_ENC: 281 case SSL_PKEY_RSA_SIGN: 282 /* We have an RSA key. */ 283 break; 284 285 case SSL_PKEY_DSA_SIGN: 286 /* We have a DSA key. */ 287 break; 288 289 case SSL_PKEY_DH_RSA: 290 case SSL_PKEY_DH_DSA: 291 /* We have a DH key. */ 292 break; 293 294 case SSL_PKEY_ECC: 295 /* We have an ECC key */ 296 break; 297 298 default: 299 /* Can't happen. */ 300 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG); 301 } 302 } 303 } 304 305 /* ret->extra_certs *should* exist, but currently the own certificate 306 * chain is held inside SSL_CTX */ 307 308 ret->references=1; 309 310 return(ret); 311 312 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH) 313 err: 314 #endif 315 #ifndef OPENSSL_NO_RSA 316 if (ret->rsa_tmp != NULL) 317 RSA_free(ret->rsa_tmp); 318 #endif 319 #ifndef OPENSSL_NO_DH 320 if (ret->dh_tmp != NULL) 321 DH_free(ret->dh_tmp); 322 #endif 323 #ifndef OPENSSL_NO_ECDH 324 if (ret->ecdh_tmp != NULL) 325 EC_KEY_free(ret->ecdh_tmp); 326 #endif 327 328 for (i = 0; i < SSL_PKEY_NUM; i++) 329 { 330 if (ret->pkeys[i].x509 != NULL) 331 X509_free(ret->pkeys[i].x509); 332 if (ret->pkeys[i].privatekey != NULL) 333 EVP_PKEY_free(ret->pkeys[i].privatekey); 334 } 335 336 return NULL; 337 } 338 339 340 void ssl_cert_free(CERT *c) 341 { 342 int i; 343 344 if(c == NULL) 345 return; 346 347 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT); 348 #ifdef REF_PRINT 349 REF_PRINT("CERT",c); 350 #endif 351 if (i > 0) return; 352 #ifdef REF_CHECK 353 if (i < 0) 354 { 355 fprintf(stderr,"ssl_cert_free, bad reference count\n"); 356 abort(); /* ok */ 357 } 358 #endif 359 360 #ifndef OPENSSL_NO_RSA 361 if (c->rsa_tmp) RSA_free(c->rsa_tmp); 362 #endif 363 #ifndef OPENSSL_NO_DH 364 if (c->dh_tmp) DH_free(c->dh_tmp); 365 #endif 366 #ifndef OPENSSL_NO_ECDH 367 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp); 368 #endif 369 370 for (i=0; i<SSL_PKEY_NUM; i++) 371 { 372 if (c->pkeys[i].x509 != NULL) 373 X509_free(c->pkeys[i].x509); 374 if (c->pkeys[i].privatekey != NULL) 375 EVP_PKEY_free(c->pkeys[i].privatekey); 376 #if 0 377 if (c->pkeys[i].publickey != NULL) 378 EVP_PKEY_free(c->pkeys[i].publickey); 379 #endif 380 } 381 OPENSSL_free(c); 382 } 383 384 int ssl_cert_inst(CERT **o) 385 { 386 /* Create a CERT if there isn't already one 387 * (which cannot really happen, as it is initially created in 388 * SSL_CTX_new; but the earlier code usually allows for that one 389 * being non-existant, so we follow that behaviour, as it might 390 * turn out that there actually is a reason for it -- but I'm 391 * not sure that *all* of the existing code could cope with 392 * s->cert being NULL, otherwise we could do without the 393 * initialization in SSL_CTX_new). 394 */ 395 396 if (o == NULL) 397 { 398 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER); 399 return(0); 400 } 401 if (*o == NULL) 402 { 403 if ((*o = ssl_cert_new()) == NULL) 404 { 405 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE); 406 return(0); 407 } 408 } 409 return(1); 410 } 411 412 413 SESS_CERT *ssl_sess_cert_new(void) 414 { 415 SESS_CERT *ret; 416 417 ret = OPENSSL_malloc(sizeof *ret); 418 if (ret == NULL) 419 { 420 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE); 421 return NULL; 422 } 423 424 memset(ret, 0 ,sizeof *ret); 425 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]); 426 ret->references = 1; 427 428 return ret; 429 } 430 431 void ssl_sess_cert_free(SESS_CERT *sc) 432 { 433 int i; 434 435 if (sc == NULL) 436 return; 437 438 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 439 #ifdef REF_PRINT 440 REF_PRINT("SESS_CERT", sc); 441 #endif 442 if (i > 0) 443 return; 444 #ifdef REF_CHECK 445 if (i < 0) 446 { 447 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n"); 448 abort(); /* ok */ 449 } 450 #endif 451 452 /* i == 0 */ 453 if (sc->cert_chain != NULL) 454 sk_X509_pop_free(sc->cert_chain, X509_free); 455 for (i = 0; i < SSL_PKEY_NUM; i++) 456 { 457 if (sc->peer_pkeys[i].x509 != NULL) 458 X509_free(sc->peer_pkeys[i].x509); 459 #if 0 /* We don't have the peer's private key. These lines are just 460 * here as a reminder that we're still using a not-quite-appropriate 461 * data structure. */ 462 if (sc->peer_pkeys[i].privatekey != NULL) 463 EVP_PKEY_free(sc->peer_pkeys[i].privatekey); 464 #endif 465 } 466 467 #ifndef OPENSSL_NO_RSA 468 if (sc->peer_rsa_tmp != NULL) 469 RSA_free(sc->peer_rsa_tmp); 470 #endif 471 #ifndef OPENSSL_NO_DH 472 if (sc->peer_dh_tmp != NULL) 473 DH_free(sc->peer_dh_tmp); 474 #endif 475 #ifndef OPENSSL_NO_ECDH 476 if (sc->peer_ecdh_tmp != NULL) 477 EC_KEY_free(sc->peer_ecdh_tmp); 478 #endif 479 480 OPENSSL_free(sc); 481 } 482 483 int ssl_set_peer_cert_type(SESS_CERT *sc,int type) 484 { 485 sc->peer_cert_type = type; 486 return(1); 487 } 488 489 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk) 490 { 491 X509 *x; 492 int i; 493 X509_STORE_CTX ctx; 494 495 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 496 return(0); 497 498 x=sk_X509_value(sk,0); 499 if(!X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk)) 500 { 501 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB); 502 return(0); 503 } 504 #if 0 505 if (SSL_get_verify_depth(s) >= 0) 506 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s)); 507 #endif 508 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s); 509 510 /* We need to inherit the verify parameters. These can be determined by 511 * the context: if its a server it will verify SSL client certificates 512 * or vice versa. 513 */ 514 515 X509_STORE_CTX_set_default(&ctx, 516 s->server ? "ssl_client" : "ssl_server"); 517 /* Anything non-default in "param" should overwrite anything in the 518 * ctx. 519 */ 520 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); 521 522 if (s->verify_callback) 523 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); 524 525 if (s->ctx->app_verify_callback != NULL) 526 #if 1 /* new with OpenSSL 0.9.7 */ 527 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); 528 #else 529 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */ 530 #endif 531 else 532 { 533 #ifndef OPENSSL_NO_X509_VERIFY 534 i=X509_verify_cert(&ctx); 535 #else 536 i=0; 537 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION; 538 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK); 539 #endif 540 } 541 542 s->verify_result=ctx.error; 543 X509_STORE_CTX_cleanup(&ctx); 544 545 return(i); 546 } 547 548 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list) 549 { 550 if (*ca_list != NULL) 551 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free); 552 553 *ca_list=name_list; 554 } 555 556 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) 557 { 558 int i; 559 STACK_OF(X509_NAME) *ret; 560 X509_NAME *name; 561 562 ret=sk_X509_NAME_new_null(); 563 for (i=0; i<sk_X509_NAME_num(sk); i++) 564 { 565 name=X509_NAME_dup(sk_X509_NAME_value(sk,i)); 566 if ((name == NULL) || !sk_X509_NAME_push(ret,name)) 567 { 568 sk_X509_NAME_pop_free(ret,X509_NAME_free); 569 return(NULL); 570 } 571 } 572 return(ret); 573 } 574 575 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list) 576 { 577 set_client_CA_list(&(s->client_CA),name_list); 578 } 579 580 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list) 581 { 582 set_client_CA_list(&(ctx->client_CA),name_list); 583 } 584 585 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 586 { 587 return(ctx->client_CA); 588 } 589 590 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s) 591 { 592 if (s->type == SSL_ST_CONNECT) 593 { /* we are in the client */ 594 if (((s->version>>8) == SSL3_VERSION_MAJOR) && 595 (s->s3 != NULL)) 596 return(s->s3->tmp.ca_names); 597 else 598 return(NULL); 599 } 600 else 601 { 602 if (s->client_CA != NULL) 603 return(s->client_CA); 604 else 605 return(s->ctx->client_CA); 606 } 607 } 608 609 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x) 610 { 611 X509_NAME *name; 612 613 if (x == NULL) return(0); 614 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL)) 615 return(0); 616 617 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL) 618 return(0); 619 620 if (!sk_X509_NAME_push(*sk,name)) 621 { 622 X509_NAME_free(name); 623 return(0); 624 } 625 return(1); 626 } 627 628 int SSL_add_client_CA(SSL *ssl,X509 *x) 629 { 630 return(add_client_CA(&(ssl->client_CA),x)); 631 } 632 633 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x) 634 { 635 return(add_client_CA(&(ctx->client_CA),x)); 636 } 637 638 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 639 { 640 return(X509_NAME_cmp(*a,*b)); 641 } 642 643 #ifndef OPENSSL_NO_STDIO 644 /*! 645 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 646 * it doesn't really have anything to do with clients (except that a common use 647 * for a stack of CAs is to send it to the client). Actually, it doesn't have 648 * much to do with CAs, either, since it will load any old cert. 649 * \param file the file containing one or more certs. 650 * \return a ::STACK containing the certs. 651 */ 652 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) 653 { 654 BIO *in; 655 X509 *x=NULL; 656 X509_NAME *xn=NULL; 657 STACK_OF(X509_NAME) *ret = NULL,*sk; 658 659 sk=sk_X509_NAME_new(xname_cmp); 660 661 in=BIO_new(BIO_s_file_internal()); 662 663 if ((sk == NULL) || (in == NULL)) 664 { 665 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 666 goto err; 667 } 668 669 if (!BIO_read_filename(in,file)) 670 goto err; 671 672 for (;;) 673 { 674 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 675 break; 676 if (ret == NULL) 677 { 678 ret = sk_X509_NAME_new_null(); 679 if (ret == NULL) 680 { 681 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 682 goto err; 683 } 684 } 685 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 686 /* check for duplicates */ 687 xn=X509_NAME_dup(xn); 688 if (xn == NULL) goto err; 689 if (sk_X509_NAME_find(sk,xn) >= 0) 690 X509_NAME_free(xn); 691 else 692 { 693 sk_X509_NAME_push(sk,xn); 694 sk_X509_NAME_push(ret,xn); 695 } 696 } 697 698 if (0) 699 { 700 err: 701 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free); 702 ret=NULL; 703 } 704 if (sk != NULL) sk_X509_NAME_free(sk); 705 if (in != NULL) BIO_free(in); 706 if (x != NULL) X509_free(x); 707 if (ret != NULL) 708 ERR_clear_error(); 709 return(ret); 710 } 711 #endif 712 713 /*! 714 * Add a file of certs to a stack. 715 * \param stack the stack to add to. 716 * \param file the file to add from. All certs in this file that are not 717 * already in the stack will be added. 718 * \return 1 for success, 0 for failure. Note that in the case of failure some 719 * certs may have been added to \c stack. 720 */ 721 722 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 723 const char *file) 724 { 725 BIO *in; 726 X509 *x=NULL; 727 X509_NAME *xn=NULL; 728 int ret=1; 729 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 730 731 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp); 732 733 in=BIO_new(BIO_s_file_internal()); 734 735 if (in == NULL) 736 { 737 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE); 738 goto err; 739 } 740 741 if (!BIO_read_filename(in,file)) 742 goto err; 743 744 for (;;) 745 { 746 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 747 break; 748 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 749 xn=X509_NAME_dup(xn); 750 if (xn == NULL) goto err; 751 if (sk_X509_NAME_find(stack,xn) >= 0) 752 X509_NAME_free(xn); 753 else 754 sk_X509_NAME_push(stack,xn); 755 } 756 757 ERR_clear_error(); 758 759 if (0) 760 { 761 err: 762 ret=0; 763 } 764 if(in != NULL) 765 BIO_free(in); 766 if(x != NULL) 767 X509_free(x); 768 769 (void)sk_X509_NAME_set_cmp_func(stack,oldcmp); 770 771 return ret; 772 } 773 774 /*! 775 * Add a directory of certs to a stack. 776 * \param stack the stack to append to. 777 * \param dir the directory to append from. All files in this directory will be 778 * examined as potential certs. Any that are acceptable to 779 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be 780 * included. 781 * \return 1 for success, 0 for failure. Note that in the case of failure some 782 * certs may have been added to \c stack. 783 */ 784 785 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 786 const char *dir) 787 { 788 OPENSSL_DIR_CTX *d = NULL; 789 const char *filename; 790 int ret = 0; 791 792 CRYPTO_w_lock(CRYPTO_LOCK_READDIR); 793 794 /* Note that a side effect is that the CAs will be sorted by name */ 795 796 while((filename = OPENSSL_DIR_read(&d, dir))) 797 { 798 char buf[1024]; 799 int r; 800 801 if(strlen(dir)+strlen(filename)+2 > sizeof buf) 802 { 803 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG); 804 goto err; 805 } 806 807 #ifdef OPENSSL_SYS_VMS 808 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename); 809 #else 810 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename); 811 #endif 812 if (r <= 0 || r >= (int)sizeof(buf)) 813 goto err; 814 if(!SSL_add_file_cert_subjects_to_stack(stack,buf)) 815 goto err; 816 } 817 818 if (errno) 819 { 820 SYSerr(SYS_F_OPENDIR, get_last_sys_error()); 821 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')"); 822 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); 823 goto err; 824 } 825 826 ret = 1; 827 828 err: 829 if (d) OPENSSL_DIR_end(&d); 830 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR); 831 return ret; 832 } 833 834
