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) 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@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@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@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 static void ssl_cert_set_default_md(CERT *cert) 164 { 165 /* Set digest values to defaults */ 166 #ifndef OPENSSL_NO_DSA 167 cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1(); 168 #endif 169 #ifndef OPENSSL_NO_RSA 170 cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1(); 171 cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1(); 172 #endif 173 #ifndef OPENSSL_NO_ECDSA 174 cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1(); 175 #endif 176 } 177 178 CERT *ssl_cert_new(void) 179 { 180 CERT *ret; 181 182 ret=(CERT *)OPENSSL_malloc(sizeof(CERT)); 183 if (ret == NULL) 184 { 185 SSLerr(SSL_F_SSL_CERT_NEW,ERR_R_MALLOC_FAILURE); 186 return(NULL); 187 } 188 memset(ret,0,sizeof(CERT)); 189 190 ret->key= &(ret->pkeys[SSL_PKEY_RSA_ENC]); 191 ret->references=1; 192 ssl_cert_set_default_md(ret); 193 return(ret); 194 } 195 196 CERT *ssl_cert_dup(CERT *cert) 197 { 198 CERT *ret; 199 int i; 200 201 ret = (CERT *)OPENSSL_malloc(sizeof(CERT)); 202 if (ret == NULL) 203 { 204 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); 205 return(NULL); 206 } 207 208 memset(ret, 0, sizeof(CERT)); 209 210 ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]]; 211 /* or ret->key = ret->pkeys + (cert->key - cert->pkeys), 212 * if you find that more readable */ 213 214 ret->valid = cert->valid; 215 ret->mask_k = cert->mask_k; 216 ret->mask_a = cert->mask_a; 217 ret->export_mask_k = cert->export_mask_k; 218 ret->export_mask_a = cert->export_mask_a; 219 220 #ifndef OPENSSL_NO_RSA 221 if (cert->rsa_tmp != NULL) 222 { 223 RSA_up_ref(cert->rsa_tmp); 224 ret->rsa_tmp = cert->rsa_tmp; 225 } 226 ret->rsa_tmp_cb = cert->rsa_tmp_cb; 227 #endif 228 229 #ifndef OPENSSL_NO_DH 230 if (cert->dh_tmp != NULL) 231 { 232 ret->dh_tmp = DHparams_dup(cert->dh_tmp); 233 if (ret->dh_tmp == NULL) 234 { 235 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB); 236 goto err; 237 } 238 if (cert->dh_tmp->priv_key) 239 { 240 BIGNUM *b = BN_dup(cert->dh_tmp->priv_key); 241 if (!b) 242 { 243 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 244 goto err; 245 } 246 ret->dh_tmp->priv_key = b; 247 } 248 if (cert->dh_tmp->pub_key) 249 { 250 BIGNUM *b = BN_dup(cert->dh_tmp->pub_key); 251 if (!b) 252 { 253 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); 254 goto err; 255 } 256 ret->dh_tmp->pub_key = b; 257 } 258 } 259 ret->dh_tmp_cb = cert->dh_tmp_cb; 260 #endif 261 262 #ifndef OPENSSL_NO_ECDH 263 if (cert->ecdh_tmp) 264 { 265 ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp); 266 if (ret->ecdh_tmp == NULL) 267 { 268 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB); 269 goto err; 270 } 271 } 272 ret->ecdh_tmp_cb = cert->ecdh_tmp_cb; 273 #endif 274 275 for (i = 0; i < SSL_PKEY_NUM; i++) 276 { 277 if (cert->pkeys[i].x509 != NULL) 278 { 279 ret->pkeys[i].x509 = cert->pkeys[i].x509; 280 CRYPTO_add(&ret->pkeys[i].x509->references, 1, 281 CRYPTO_LOCK_X509); 282 } 283 284 if (cert->pkeys[i].privatekey != NULL) 285 { 286 ret->pkeys[i].privatekey = cert->pkeys[i].privatekey; 287 CRYPTO_add(&ret->pkeys[i].privatekey->references, 1, 288 CRYPTO_LOCK_EVP_PKEY); 289 290 switch(i) 291 { 292 /* If there was anything special to do for 293 * certain types of keys, we'd do it here. 294 * (Nothing at the moment, I think.) */ 295 296 case SSL_PKEY_RSA_ENC: 297 case SSL_PKEY_RSA_SIGN: 298 /* We have an RSA key. */ 299 break; 300 301 case SSL_PKEY_DSA_SIGN: 302 /* We have a DSA key. */ 303 break; 304 305 case SSL_PKEY_DH_RSA: 306 case SSL_PKEY_DH_DSA: 307 /* We have a DH key. */ 308 break; 309 310 case SSL_PKEY_ECC: 311 /* We have an ECC key */ 312 break; 313 314 default: 315 /* Can't happen. */ 316 SSLerr(SSL_F_SSL_CERT_DUP, SSL_R_LIBRARY_BUG); 317 } 318 } 319 } 320 321 /* ret->extra_certs *should* exist, but currently the own certificate 322 * chain is held inside SSL_CTX */ 323 324 ret->references=1; 325 /* Set digests to defaults. NB: we don't copy existing values as they 326 * will be set during handshake. 327 */ 328 ssl_cert_set_default_md(ret); 329 330 return(ret); 331 332 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH) 333 err: 334 #endif 335 #ifndef OPENSSL_NO_RSA 336 if (ret->rsa_tmp != NULL) 337 RSA_free(ret->rsa_tmp); 338 #endif 339 #ifndef OPENSSL_NO_DH 340 if (ret->dh_tmp != NULL) 341 DH_free(ret->dh_tmp); 342 #endif 343 #ifndef OPENSSL_NO_ECDH 344 if (ret->ecdh_tmp != NULL) 345 EC_KEY_free(ret->ecdh_tmp); 346 #endif 347 348 for (i = 0; i < SSL_PKEY_NUM; i++) 349 { 350 if (ret->pkeys[i].x509 != NULL) 351 X509_free(ret->pkeys[i].x509); 352 if (ret->pkeys[i].privatekey != NULL) 353 EVP_PKEY_free(ret->pkeys[i].privatekey); 354 } 355 356 return NULL; 357 } 358 359 360 void ssl_cert_free(CERT *c) 361 { 362 int i; 363 364 if(c == NULL) 365 return; 366 367 i=CRYPTO_add(&c->references,-1,CRYPTO_LOCK_SSL_CERT); 368 #ifdef REF_PRINT 369 REF_PRINT("CERT",c); 370 #endif 371 if (i > 0) return; 372 #ifdef REF_CHECK 373 if (i < 0) 374 { 375 fprintf(stderr,"ssl_cert_free, bad reference count\n"); 376 abort(); /* ok */ 377 } 378 #endif 379 380 #ifndef OPENSSL_NO_RSA 381 if (c->rsa_tmp) RSA_free(c->rsa_tmp); 382 #endif 383 #ifndef OPENSSL_NO_DH 384 if (c->dh_tmp) DH_free(c->dh_tmp); 385 #endif 386 #ifndef OPENSSL_NO_ECDH 387 if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp); 388 #endif 389 390 for (i=0; i<SSL_PKEY_NUM; i++) 391 { 392 if (c->pkeys[i].x509 != NULL) 393 X509_free(c->pkeys[i].x509); 394 if (c->pkeys[i].privatekey != NULL) 395 EVP_PKEY_free(c->pkeys[i].privatekey); 396 #if 0 397 if (c->pkeys[i].publickey != NULL) 398 EVP_PKEY_free(c->pkeys[i].publickey); 399 #endif 400 } 401 OPENSSL_free(c); 402 } 403 404 int ssl_cert_inst(CERT **o) 405 { 406 /* Create a CERT if there isn't already one 407 * (which cannot really happen, as it is initially created in 408 * SSL_CTX_new; but the earlier code usually allows for that one 409 * being non-existant, so we follow that behaviour, as it might 410 * turn out that there actually is a reason for it -- but I'm 411 * not sure that *all* of the existing code could cope with 412 * s->cert being NULL, otherwise we could do without the 413 * initialization in SSL_CTX_new). 414 */ 415 416 if (o == NULL) 417 { 418 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER); 419 return(0); 420 } 421 if (*o == NULL) 422 { 423 if ((*o = ssl_cert_new()) == NULL) 424 { 425 SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE); 426 return(0); 427 } 428 } 429 return(1); 430 } 431 432 433 SESS_CERT *ssl_sess_cert_new(void) 434 { 435 SESS_CERT *ret; 436 437 ret = OPENSSL_malloc(sizeof *ret); 438 if (ret == NULL) 439 { 440 SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE); 441 return NULL; 442 } 443 444 memset(ret, 0 ,sizeof *ret); 445 ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]); 446 ret->references = 1; 447 448 return ret; 449 } 450 451 void ssl_sess_cert_free(SESS_CERT *sc) 452 { 453 int i; 454 455 if (sc == NULL) 456 return; 457 458 i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT); 459 #ifdef REF_PRINT 460 REF_PRINT("SESS_CERT", sc); 461 #endif 462 if (i > 0) 463 return; 464 #ifdef REF_CHECK 465 if (i < 0) 466 { 467 fprintf(stderr,"ssl_sess_cert_free, bad reference count\n"); 468 abort(); /* ok */ 469 } 470 #endif 471 472 /* i == 0 */ 473 if (sc->cert_chain != NULL) 474 sk_X509_pop_free(sc->cert_chain, X509_free); 475 for (i = 0; i < SSL_PKEY_NUM; i++) 476 { 477 if (sc->peer_pkeys[i].x509 != NULL) 478 X509_free(sc->peer_pkeys[i].x509); 479 #if 0 /* We don't have the peer's private key. These lines are just 480 * here as a reminder that we're still using a not-quite-appropriate 481 * data structure. */ 482 if (sc->peer_pkeys[i].privatekey != NULL) 483 EVP_PKEY_free(sc->peer_pkeys[i].privatekey); 484 #endif 485 } 486 487 #ifndef OPENSSL_NO_RSA 488 if (sc->peer_rsa_tmp != NULL) 489 RSA_free(sc->peer_rsa_tmp); 490 #endif 491 #ifndef OPENSSL_NO_DH 492 if (sc->peer_dh_tmp != NULL) 493 DH_free(sc->peer_dh_tmp); 494 #endif 495 #ifndef OPENSSL_NO_ECDH 496 if (sc->peer_ecdh_tmp != NULL) 497 EC_KEY_free(sc->peer_ecdh_tmp); 498 #endif 499 500 OPENSSL_free(sc); 501 } 502 503 int ssl_set_peer_cert_type(SESS_CERT *sc,int type) 504 { 505 sc->peer_cert_type = type; 506 return(1); 507 } 508 509 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk) 510 { 511 X509 *x; 512 int i; 513 X509_STORE_CTX ctx; 514 515 if ((sk == NULL) || (sk_X509_num(sk) == 0)) 516 return(0); 517 518 x=sk_X509_value(sk,0); 519 if(!X509_STORE_CTX_init(&ctx,s->ctx->cert_store,x,sk)) 520 { 521 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,ERR_R_X509_LIB); 522 return(0); 523 } 524 #if 0 525 if (SSL_get_verify_depth(s) >= 0) 526 X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s)); 527 #endif 528 X509_STORE_CTX_set_ex_data(&ctx,SSL_get_ex_data_X509_STORE_CTX_idx(),s); 529 530 /* We need to inherit the verify parameters. These can be determined by 531 * the context: if its a server it will verify SSL client certificates 532 * or vice versa. 533 */ 534 535 X509_STORE_CTX_set_default(&ctx, 536 s->server ? "ssl_client" : "ssl_server"); 537 /* Anything non-default in "param" should overwrite anything in the 538 * ctx. 539 */ 540 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); 541 542 if (s->verify_callback) 543 X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); 544 545 if (s->ctx->app_verify_callback != NULL) 546 #if 1 /* new with OpenSSL 0.9.7 */ 547 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); 548 #else 549 i=s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */ 550 #endif 551 else 552 { 553 #ifndef OPENSSL_NO_X509_VERIFY 554 i=X509_verify_cert(&ctx); 555 #else 556 i=0; 557 ctx.error=X509_V_ERR_APPLICATION_VERIFICATION; 558 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN,SSL_R_NO_VERIFY_CALLBACK); 559 #endif 560 } 561 562 s->verify_result=ctx.error; 563 X509_STORE_CTX_cleanup(&ctx); 564 565 return(i); 566 } 567 568 static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,STACK_OF(X509_NAME) *name_list) 569 { 570 if (*ca_list != NULL) 571 sk_X509_NAME_pop_free(*ca_list,X509_NAME_free); 572 573 *ca_list=name_list; 574 } 575 576 STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) 577 { 578 int i; 579 STACK_OF(X509_NAME) *ret; 580 X509_NAME *name; 581 582 ret=sk_X509_NAME_new_null(); 583 for (i=0; i<sk_X509_NAME_num(sk); i++) 584 { 585 name=X509_NAME_dup(sk_X509_NAME_value(sk,i)); 586 if ((name == NULL) || !sk_X509_NAME_push(ret,name)) 587 { 588 sk_X509_NAME_pop_free(ret,X509_NAME_free); 589 return(NULL); 590 } 591 } 592 return(ret); 593 } 594 595 void SSL_set_client_CA_list(SSL *s,STACK_OF(X509_NAME) *name_list) 596 { 597 set_client_CA_list(&(s->client_CA),name_list); 598 } 599 600 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,STACK_OF(X509_NAME) *name_list) 601 { 602 set_client_CA_list(&(ctx->client_CA),name_list); 603 } 604 605 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) 606 { 607 return(ctx->client_CA); 608 } 609 610 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s) 611 { 612 if (s->type == SSL_ST_CONNECT) 613 { /* we are in the client */ 614 if (((s->version>>8) == SSL3_VERSION_MAJOR) && 615 (s->s3 != NULL)) 616 return(s->s3->tmp.ca_names); 617 else 618 return(NULL); 619 } 620 else 621 { 622 if (s->client_CA != NULL) 623 return(s->client_CA); 624 else 625 return(s->ctx->client_CA); 626 } 627 } 628 629 static int add_client_CA(STACK_OF(X509_NAME) **sk,X509 *x) 630 { 631 X509_NAME *name; 632 633 if (x == NULL) return(0); 634 if ((*sk == NULL) && ((*sk=sk_X509_NAME_new_null()) == NULL)) 635 return(0); 636 637 if ((name=X509_NAME_dup(X509_get_subject_name(x))) == NULL) 638 return(0); 639 640 if (!sk_X509_NAME_push(*sk,name)) 641 { 642 X509_NAME_free(name); 643 return(0); 644 } 645 return(1); 646 } 647 648 int SSL_add_client_CA(SSL *ssl,X509 *x) 649 { 650 return(add_client_CA(&(ssl->client_CA),x)); 651 } 652 653 int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x) 654 { 655 return(add_client_CA(&(ctx->client_CA),x)); 656 } 657 658 static int xname_cmp(const X509_NAME * const *a, const X509_NAME * const *b) 659 { 660 return(X509_NAME_cmp(*a,*b)); 661 } 662 663 #ifndef OPENSSL_NO_STDIO 664 /*! 665 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; 666 * it doesn't really have anything to do with clients (except that a common use 667 * for a stack of CAs is to send it to the client). Actually, it doesn't have 668 * much to do with CAs, either, since it will load any old cert. 669 * \param file the file containing one or more certs. 670 * \return a ::STACK containing the certs. 671 */ 672 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) 673 { 674 BIO *in; 675 X509 *x=NULL; 676 X509_NAME *xn=NULL; 677 STACK_OF(X509_NAME) *ret = NULL,*sk; 678 679 sk=sk_X509_NAME_new(xname_cmp); 680 681 in=BIO_new(BIO_s_file_internal()); 682 683 if ((sk == NULL) || (in == NULL)) 684 { 685 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 686 goto err; 687 } 688 689 if (!BIO_read_filename(in,file)) 690 goto err; 691 692 for (;;) 693 { 694 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 695 break; 696 if (ret == NULL) 697 { 698 ret = sk_X509_NAME_new_null(); 699 if (ret == NULL) 700 { 701 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE,ERR_R_MALLOC_FAILURE); 702 goto err; 703 } 704 } 705 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 706 /* check for duplicates */ 707 xn=X509_NAME_dup(xn); 708 if (xn == NULL) goto err; 709 if (sk_X509_NAME_find(sk,xn) >= 0) 710 X509_NAME_free(xn); 711 else 712 { 713 sk_X509_NAME_push(sk,xn); 714 sk_X509_NAME_push(ret,xn); 715 } 716 } 717 718 if (0) 719 { 720 err: 721 if (ret != NULL) sk_X509_NAME_pop_free(ret,X509_NAME_free); 722 ret=NULL; 723 } 724 if (sk != NULL) sk_X509_NAME_free(sk); 725 if (in != NULL) BIO_free(in); 726 if (x != NULL) X509_free(x); 727 if (ret != NULL) 728 ERR_clear_error(); 729 return(ret); 730 } 731 #endif 732 733 /*! 734 * Add a file of certs to a stack. 735 * \param stack the stack to add to. 736 * \param file the file to add from. All certs in this file that are not 737 * already in the stack will be added. 738 * \return 1 for success, 0 for failure. Note that in the case of failure some 739 * certs may have been added to \c stack. 740 */ 741 742 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 743 const char *file) 744 { 745 BIO *in; 746 X509 *x=NULL; 747 X509_NAME *xn=NULL; 748 int ret=1; 749 int (*oldcmp)(const X509_NAME * const *a, const X509_NAME * const *b); 750 751 oldcmp=sk_X509_NAME_set_cmp_func(stack,xname_cmp); 752 753 in=BIO_new(BIO_s_file_internal()); 754 755 if (in == NULL) 756 { 757 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,ERR_R_MALLOC_FAILURE); 758 goto err; 759 } 760 761 if (!BIO_read_filename(in,file)) 762 goto err; 763 764 for (;;) 765 { 766 if (PEM_read_bio_X509(in,&x,NULL,NULL) == NULL) 767 break; 768 if ((xn=X509_get_subject_name(x)) == NULL) goto err; 769 xn=X509_NAME_dup(xn); 770 if (xn == NULL) goto err; 771 if (sk_X509_NAME_find(stack,xn) >= 0) 772 X509_NAME_free(xn); 773 else 774 sk_X509_NAME_push(stack,xn); 775 } 776 777 ERR_clear_error(); 778 779 if (0) 780 { 781 err: 782 ret=0; 783 } 784 if(in != NULL) 785 BIO_free(in); 786 if(x != NULL) 787 X509_free(x); 788 789 (void)sk_X509_NAME_set_cmp_func(stack,oldcmp); 790 791 return ret; 792 } 793 794 /*! 795 * Add a directory of certs to a stack. 796 * \param stack the stack to append to. 797 * \param dir the directory to append from. All files in this directory will be 798 * examined as potential certs. Any that are acceptable to 799 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be 800 * included. 801 * \return 1 for success, 0 for failure. Note that in the case of failure some 802 * certs may have been added to \c stack. 803 */ 804 805 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 806 const char *dir) 807 { 808 OPENSSL_DIR_CTX *d = NULL; 809 const char *filename; 810 int ret = 0; 811 812 CRYPTO_w_lock(CRYPTO_LOCK_READDIR); 813 814 /* Note that a side effect is that the CAs will be sorted by name */ 815 816 while((filename = OPENSSL_DIR_read(&d, dir))) 817 { 818 char buf[1024]; 819 int r; 820 821 if(strlen(dir)+strlen(filename)+2 > sizeof buf) 822 { 823 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,SSL_R_PATH_TOO_LONG); 824 goto err; 825 } 826 827 #ifdef OPENSSL_SYS_VMS 828 r = BIO_snprintf(buf,sizeof buf,"%s%s",dir,filename); 829 #else 830 r = BIO_snprintf(buf,sizeof buf,"%s/%s",dir,filename); 831 #endif 832 if (r <= 0 || r >= (int)sizeof(buf)) 833 goto err; 834 if(!SSL_add_file_cert_subjects_to_stack(stack,buf)) 835 goto err; 836 } 837 838 if (errno) 839 { 840 SYSerr(SYS_F_OPENDIR, get_last_sys_error()); 841 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')"); 842 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); 843 goto err; 844 } 845 846 ret = 1; 847 848 err: 849 if (d) OPENSSL_DIR_end(&d); 850 CRYPTO_w_unlock(CRYPTO_LOCK_READDIR); 851 return ret; 852 } 853 854