1 /*! \file ssl/ssl_lib.c 2 * \brief Version independent SSL functions. 3 */ 4 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 5 * All rights reserved. 6 * 7 * This package is an SSL implementation written 8 * by Eric Young (eay (at) cryptsoft.com). 9 * The implementation was written so as to conform with Netscapes SSL. 10 * 11 * This library is free for commercial and non-commercial use as long as 12 * the following conditions are aheared to. The following conditions 13 * apply to all code found in this distribution, be it the RC4, RSA, 14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 15 * included with this distribution is covered by the same copyright terms 16 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 17 * 18 * Copyright remains Eric Young's, and as such any Copyright notices in 19 * the code are not to be removed. 20 * If this package is used in a product, Eric Young should be given attribution 21 * as the author of the parts of the library used. 22 * This can be in the form of a textual message at program startup or 23 * in documentation (online or textual) provided with the package. 24 * 25 * Redistribution and use in source and binary forms, with or without 26 * modification, are permitted provided that the following conditions 27 * are met: 28 * 1. Redistributions of source code must retain the copyright 29 * notice, this list of conditions and the following disclaimer. 30 * 2. Redistributions in binary form must reproduce the above copyright 31 * notice, this list of conditions and the following disclaimer in the 32 * documentation and/or other materials provided with the distribution. 33 * 3. All advertising materials mentioning features or use of this software 34 * must display the following acknowledgement: 35 * "This product includes cryptographic software written by 36 * Eric Young (eay (at) cryptsoft.com)" 37 * The word 'cryptographic' can be left out if the rouines from the library 38 * being used are not cryptographic related :-). 39 * 4. If you include any Windows specific code (or a derivative thereof) from 40 * the apps directory (application code) you must include an acknowledgement: 41 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 42 * 43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * The licence and distribution terms for any publically available version or 56 * derivative of this code cannot be changed. i.e. this code cannot simply be 57 * copied and put under another distribution licence 58 * [including the GNU Public Licence.] 59 */ 60 /* ==================================================================== 61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 67 * 1. Redistributions of source code must retain the above copyright 68 * notice, this list of conditions and the following disclaimer. 69 * 70 * 2. Redistributions in binary form must reproduce the above copyright 71 * notice, this list of conditions and the following disclaimer in 72 * the documentation and/or other materials provided with the 73 * distribution. 74 * 75 * 3. All advertising materials mentioning features or use of this 76 * software must display the following acknowledgment: 77 * "This product includes software developed by the OpenSSL Project 78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 79 * 80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 81 * endorse or promote products derived from this software without 82 * prior written permission. For written permission, please contact 83 * openssl-core (at) openssl.org. 84 * 85 * 5. Products derived from this software may not be called "OpenSSL" 86 * nor may "OpenSSL" appear in their names without prior written 87 * permission of the OpenSSL Project. 88 * 89 * 6. Redistributions of any form whatsoever must retain the following 90 * acknowledgment: 91 * "This product includes software developed by the OpenSSL Project 92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 93 * 94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 105 * OF THE POSSIBILITY OF SUCH DAMAGE. 106 * ==================================================================== 107 * 108 * This product includes cryptographic software written by Eric Young 109 * (eay (at) cryptsoft.com). This product includes software written by Tim 110 * Hudson (tjh (at) cryptsoft.com). 111 * 112 */ 113 /* ==================================================================== 114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 115 * ECC cipher suite support in OpenSSL originally developed by 116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 117 */ 118 /* ==================================================================== 119 * Copyright 2005 Nokia. All rights reserved. 120 * 121 * The portions of the attached software ("Contribution") is developed by 122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 123 * license. 124 * 125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 127 * support (see RFC 4279) to OpenSSL. 128 * 129 * No patent licenses or other rights except those expressly stated in 130 * the OpenSSL open source license shall be deemed granted or received 131 * expressly, by implication, estoppel, or otherwise. 132 * 133 * No assurances are provided by Nokia that the Contribution does not 134 * infringe the patent or other intellectual property rights of any third 135 * party or that the license provides you with all the necessary rights 136 * to make use of the Contribution. 137 * 138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 142 * OTHERWISE. 143 */ 144 145 #ifdef REF_CHECK 146 # include <assert.h> 147 #endif 148 #include <stdio.h> 149 #include "ssl_locl.h" 150 #include "kssl_lcl.h" 151 #include <openssl/objects.h> 152 #include <openssl/lhash.h> 153 #include <openssl/x509v3.h> 154 #include <openssl/rand.h> 155 #include <openssl/ocsp.h> 156 #ifndef OPENSSL_NO_DH 157 #include <openssl/dh.h> 158 #endif 159 #ifndef OPENSSL_NO_ENGINE 160 #include <openssl/engine.h> 161 #endif 162 163 const char *SSL_version_str=OPENSSL_VERSION_TEXT; 164 165 SSL3_ENC_METHOD ssl3_undef_enc_method={ 166 /* evil casts, but these functions are only called if there's a library bug */ 167 (int (*)(SSL *,int))ssl_undefined_function, 168 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 169 ssl_undefined_function, 170 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function, 171 (int (*)(SSL*, int))ssl_undefined_function, 172 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function, 173 0, /* finish_mac_length */ 174 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function, 175 NULL, /* client_finished_label */ 176 0, /* client_finished_label_len */ 177 NULL, /* server_finished_label */ 178 0, /* server_finished_label_len */ 179 (int (*)(int))ssl_undefined_function, 180 (int (*)(SSL *, unsigned char *, size_t, const char *, 181 size_t, const unsigned char *, size_t, 182 int use_context)) ssl_undefined_function, 183 }; 184 185 int SSL_clear(SSL *s) 186 { 187 188 if (s->method == NULL) 189 { 190 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED); 191 return(0); 192 } 193 194 if (ssl_clear_bad_session(s)) 195 { 196 SSL_SESSION_free(s->session); 197 s->session=NULL; 198 } 199 200 s->error=0; 201 s->hit=0; 202 s->shutdown=0; 203 204 #if 0 /* Disabled since version 1.10 of this file (early return not 205 * needed because SSL_clear is not called when doing renegotiation) */ 206 /* This is set if we are doing dynamic renegotiation so keep 207 * the old cipher. It is sort of a SSL_clear_lite :-) */ 208 if (s->renegotiate) return(1); 209 #else 210 if (s->renegotiate) 211 { 212 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR); 213 return 0; 214 } 215 #endif 216 217 s->type=0; 218 219 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT); 220 221 s->version=s->method->version; 222 s->client_version=s->version; 223 s->rwstate=SSL_NOTHING; 224 s->rstate=SSL_ST_READ_HEADER; 225 #if 0 226 s->read_ahead=s->ctx->read_ahead; 227 #endif 228 229 if (s->init_buf != NULL) 230 { 231 BUF_MEM_free(s->init_buf); 232 s->init_buf=NULL; 233 } 234 235 ssl_clear_cipher_ctx(s); 236 ssl_clear_hash_ctx(&s->read_hash); 237 ssl_clear_hash_ctx(&s->write_hash); 238 239 s->first_packet=0; 240 241 #if 1 242 /* Check to see if we were changed into a different method, if 243 * so, revert back if we are not doing session-id reuse. */ 244 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method)) 245 { 246 s->method->ssl_free(s); 247 s->method=s->ctx->method; 248 if (!s->method->ssl_new(s)) 249 return(0); 250 } 251 else 252 #endif 253 s->method->ssl_clear(s); 254 return(1); 255 } 256 257 /** Used to change an SSL_CTXs default SSL method type */ 258 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth) 259 { 260 STACK_OF(SSL_CIPHER) *sk; 261 262 ctx->method=meth; 263 264 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list), 265 &(ctx->cipher_list_by_id), 266 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 267 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) 268 { 269 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 270 return(0); 271 } 272 return(1); 273 } 274 275 SSL *SSL_new(SSL_CTX *ctx) 276 { 277 SSL *s; 278 279 if (ctx == NULL) 280 { 281 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX); 282 return(NULL); 283 } 284 if (ctx->method == NULL) 285 { 286 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 287 return(NULL); 288 } 289 290 s=(SSL *)OPENSSL_malloc(sizeof(SSL)); 291 if (s == NULL) goto err; 292 memset(s,0,sizeof(SSL)); 293 294 #ifndef OPENSSL_NO_KRB5 295 s->kssl_ctx = kssl_ctx_new(); 296 #endif /* OPENSSL_NO_KRB5 */ 297 298 s->options=ctx->options; 299 s->mode=ctx->mode; 300 s->max_cert_list=ctx->max_cert_list; 301 302 if (ctx->cert != NULL) 303 { 304 /* Earlier library versions used to copy the pointer to 305 * the CERT, not its contents; only when setting new 306 * parameters for the per-SSL copy, ssl_cert_new would be 307 * called (and the direct reference to the per-SSL_CTX 308 * settings would be lost, but those still were indirectly 309 * accessed for various purposes, and for that reason they 310 * used to be known as s->ctx->default_cert). 311 * Now we don't look at the SSL_CTX's CERT after having 312 * duplicated it once. */ 313 314 s->cert = ssl_cert_dup(ctx->cert); 315 if (s->cert == NULL) 316 goto err; 317 } 318 else 319 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 320 321 s->read_ahead=ctx->read_ahead; 322 s->msg_callback=ctx->msg_callback; 323 s->msg_callback_arg=ctx->msg_callback_arg; 324 s->verify_mode=ctx->verify_mode; 325 #if 0 326 s->verify_depth=ctx->verify_depth; 327 #endif 328 s->sid_ctx_length=ctx->sid_ctx_length; 329 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 330 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx)); 331 s->verify_callback=ctx->default_verify_callback; 332 s->session_creation_enabled=1; 333 s->generate_session_id=ctx->generate_session_id; 334 335 s->param = X509_VERIFY_PARAM_new(); 336 if (!s->param) 337 goto err; 338 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 339 #if 0 340 s->purpose = ctx->purpose; 341 s->trust = ctx->trust; 342 #endif 343 s->quiet_shutdown=ctx->quiet_shutdown; 344 s->max_send_fragment = ctx->max_send_fragment; 345 346 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 347 s->ctx=ctx; 348 #ifndef OPENSSL_NO_TLSEXT 349 s->tlsext_debug_cb = 0; 350 s->tlsext_debug_arg = NULL; 351 s->tlsext_ticket_expected = 0; 352 s->tlsext_status_type = -1; 353 s->tlsext_status_expected = 0; 354 s->tlsext_ocsp_ids = NULL; 355 s->tlsext_ocsp_exts = NULL; 356 s->tlsext_ocsp_resp = NULL; 357 s->tlsext_ocsp_resplen = -1; 358 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 359 s->initial_ctx=ctx; 360 # ifndef OPENSSL_NO_NEXTPROTONEG 361 s->next_proto_negotiated = NULL; 362 # endif 363 364 if (s->ctx->alpn_client_proto_list) 365 { 366 s->alpn_client_proto_list = 367 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len); 368 if (s->alpn_client_proto_list == NULL) 369 goto err; 370 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list, 371 s->ctx->alpn_client_proto_list_len); 372 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len; 373 } 374 #endif 375 376 s->verify_result=X509_V_OK; 377 378 s->method=ctx->method; 379 380 if (!s->method->ssl_new(s)) 381 goto err; 382 383 s->references=1; 384 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1; 385 386 SSL_clear(s); 387 388 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 389 390 #ifndef OPENSSL_NO_PSK 391 s->psk_client_callback=ctx->psk_client_callback; 392 s->psk_server_callback=ctx->psk_server_callback; 393 #endif 394 395 return(s); 396 err: 397 if (s != NULL) 398 { 399 if (s->cert != NULL) 400 ssl_cert_free(s->cert); 401 if (s->ctx != NULL) 402 SSL_CTX_free(s->ctx); /* decrement reference count */ 403 OPENSSL_free(s); 404 } 405 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE); 406 return(NULL); 407 } 408 409 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx, 410 unsigned int sid_ctx_len) 411 { 412 if(sid_ctx_len > sizeof ctx->sid_ctx) 413 { 414 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 415 return 0; 416 } 417 ctx->sid_ctx_length=sid_ctx_len; 418 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len); 419 420 return 1; 421 } 422 423 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx, 424 unsigned int sid_ctx_len) 425 { 426 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 427 { 428 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 429 return 0; 430 } 431 ssl->sid_ctx_length=sid_ctx_len; 432 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len); 433 434 return 1; 435 } 436 437 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 438 { 439 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 440 ctx->generate_session_id = cb; 441 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 442 return 1; 443 } 444 445 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 446 { 447 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 448 ssl->generate_session_id = cb; 449 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 450 return 1; 451 } 452 453 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 454 unsigned int id_len) 455 { 456 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 457 * we can "construct" a session to give us the desired check - ie. to 458 * find if there's a session in the hash table that would conflict with 459 * any new session built out of this id/id_len and the ssl_version in 460 * use by this SSL. */ 461 SSL_SESSION r, *p; 462 463 if(id_len > sizeof r.session_id) 464 return 0; 465 466 r.ssl_version = ssl->version; 467 r.session_id_length = id_len; 468 memcpy(r.session_id, id, id_len); 469 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 470 * callback is calling us to check the uniqueness of a shorter ID, it 471 * must be compared as a padded-out ID because that is what it will be 472 * converted to when the callback has finished choosing it. */ 473 if((r.ssl_version == SSL2_VERSION) && 474 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) 475 { 476 memset(r.session_id + id_len, 0, 477 SSL2_SSL_SESSION_ID_LENGTH - id_len); 478 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 479 } 480 481 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 482 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 483 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 484 return (p != NULL); 485 } 486 487 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 488 { 489 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 490 } 491 492 int SSL_set_purpose(SSL *s, int purpose) 493 { 494 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 495 } 496 497 int SSL_CTX_set_trust(SSL_CTX *s, int trust) 498 { 499 return X509_VERIFY_PARAM_set_trust(s->param, trust); 500 } 501 502 int SSL_set_trust(SSL *s, int trust) 503 { 504 return X509_VERIFY_PARAM_set_trust(s->param, trust); 505 } 506 507 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 508 { 509 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 510 } 511 512 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 513 { 514 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 515 } 516 517 void SSL_free(SSL *s) 518 { 519 int i; 520 521 if(s == NULL) 522 return; 523 524 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL); 525 #ifdef REF_PRINT 526 REF_PRINT("SSL",s); 527 #endif 528 if (i > 0) return; 529 #ifdef REF_CHECK 530 if (i < 0) 531 { 532 fprintf(stderr,"SSL_free, bad reference count\n"); 533 abort(); /* ok */ 534 } 535 #endif 536 537 if (s->param) 538 X509_VERIFY_PARAM_free(s->param); 539 540 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 541 542 if (s->bbio != NULL) 543 { 544 /* If the buffering BIO is in place, pop it off */ 545 if (s->bbio == s->wbio) 546 { 547 s->wbio=BIO_pop(s->wbio); 548 } 549 BIO_free(s->bbio); 550 s->bbio=NULL; 551 } 552 if (s->rbio != NULL) 553 BIO_free_all(s->rbio); 554 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 555 BIO_free_all(s->wbio); 556 557 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf); 558 559 /* add extra stuff */ 560 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list); 561 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id); 562 563 /* Make the next call work :-) */ 564 if (s->session != NULL) 565 { 566 ssl_clear_bad_session(s); 567 SSL_SESSION_free(s->session); 568 } 569 570 ssl_clear_cipher_ctx(s); 571 ssl_clear_hash_ctx(&s->read_hash); 572 ssl_clear_hash_ctx(&s->write_hash); 573 574 if (s->cert != NULL) ssl_cert_free(s->cert); 575 /* Free up if allocated */ 576 577 #ifndef OPENSSL_NO_TLSEXT 578 if (s->tlsext_hostname) 579 OPENSSL_free(s->tlsext_hostname); 580 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx); 581 #ifndef OPENSSL_NO_EC 582 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist); 583 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist); 584 #endif /* OPENSSL_NO_EC */ 585 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input); 586 if (s->tlsext_ocsp_exts) 587 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 588 X509_EXTENSION_free); 589 if (s->tlsext_ocsp_ids) 590 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 591 if (s->tlsext_ocsp_resp) 592 OPENSSL_free(s->tlsext_ocsp_resp); 593 if (s->tlsext_channel_id_private) 594 EVP_PKEY_free(s->tlsext_channel_id_private); 595 if (s->alpn_client_proto_list) 596 OPENSSL_free(s->alpn_client_proto_list); 597 #endif 598 599 if (s->client_CA != NULL) 600 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free); 601 602 if (s->method != NULL) s->method->ssl_free(s); 603 604 if (s->ctx) SSL_CTX_free(s->ctx); 605 606 #ifndef OPENSSL_NO_KRB5 607 if (s->kssl_ctx != NULL) 608 kssl_ctx_free(s->kssl_ctx); 609 #endif /* OPENSSL_NO_KRB5 */ 610 611 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 612 if (s->next_proto_negotiated) 613 OPENSSL_free(s->next_proto_negotiated); 614 #endif 615 616 #ifndef OPENSSL_NO_SRTP 617 if (s->srtp_profiles) 618 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 619 #endif 620 621 OPENSSL_free(s); 622 } 623 624 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 625 { 626 /* If the output buffering BIO is still in place, remove it 627 */ 628 if (s->bbio != NULL) 629 { 630 if (s->wbio == s->bbio) 631 { 632 s->wbio=s->wbio->next_bio; 633 s->bbio->next_bio=NULL; 634 } 635 } 636 if ((s->rbio != NULL) && (s->rbio != rbio)) 637 BIO_free_all(s->rbio); 638 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 639 BIO_free_all(s->wbio); 640 s->rbio=rbio; 641 s->wbio=wbio; 642 } 643 644 BIO *SSL_get_rbio(const SSL *s) 645 { return(s->rbio); } 646 647 BIO *SSL_get_wbio(const SSL *s) 648 { return(s->wbio); } 649 650 int SSL_get_fd(const SSL *s) 651 { 652 return(SSL_get_rfd(s)); 653 } 654 655 int SSL_get_rfd(const SSL *s) 656 { 657 int ret= -1; 658 BIO *b,*r; 659 660 b=SSL_get_rbio(s); 661 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 662 if (r != NULL) 663 BIO_get_fd(r,&ret); 664 return(ret); 665 } 666 667 int SSL_get_wfd(const SSL *s) 668 { 669 int ret= -1; 670 BIO *b,*r; 671 672 b=SSL_get_wbio(s); 673 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 674 if (r != NULL) 675 BIO_get_fd(r,&ret); 676 return(ret); 677 } 678 679 #ifndef OPENSSL_NO_SOCK 680 int SSL_set_fd(SSL *s,int fd) 681 { 682 int ret=0; 683 BIO *bio=NULL; 684 685 bio=BIO_new(BIO_s_socket()); 686 687 if (bio == NULL) 688 { 689 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 690 goto err; 691 } 692 BIO_set_fd(bio,fd,BIO_NOCLOSE); 693 SSL_set_bio(s,bio,bio); 694 ret=1; 695 err: 696 return(ret); 697 } 698 699 int SSL_set_wfd(SSL *s,int fd) 700 { 701 int ret=0; 702 BIO *bio=NULL; 703 704 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 705 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 706 { 707 bio=BIO_new(BIO_s_socket()); 708 709 if (bio == NULL) 710 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 711 BIO_set_fd(bio,fd,BIO_NOCLOSE); 712 SSL_set_bio(s,SSL_get_rbio(s),bio); 713 } 714 else 715 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 716 ret=1; 717 err: 718 return(ret); 719 } 720 721 int SSL_set_rfd(SSL *s,int fd) 722 { 723 int ret=0; 724 BIO *bio=NULL; 725 726 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 727 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 728 { 729 bio=BIO_new(BIO_s_socket()); 730 731 if (bio == NULL) 732 { 733 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 734 goto err; 735 } 736 BIO_set_fd(bio,fd,BIO_NOCLOSE); 737 SSL_set_bio(s,bio,SSL_get_wbio(s)); 738 } 739 else 740 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 741 ret=1; 742 err: 743 return(ret); 744 } 745 #endif 746 747 748 /* return length of latest Finished message we sent, copy to 'buf' */ 749 size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 750 { 751 size_t ret = 0; 752 753 if (s->s3 != NULL) 754 { 755 ret = s->s3->tmp.finish_md_len; 756 if (count > ret) 757 count = ret; 758 memcpy(buf, s->s3->tmp.finish_md, count); 759 } 760 return ret; 761 } 762 763 /* return length of latest Finished message we expected, copy to 'buf' */ 764 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 765 { 766 size_t ret = 0; 767 768 if (s->s3 != NULL) 769 { 770 ret = s->s3->tmp.peer_finish_md_len; 771 if (count > ret) 772 count = ret; 773 memcpy(buf, s->s3->tmp.peer_finish_md, count); 774 } 775 return ret; 776 } 777 778 779 int SSL_get_verify_mode(const SSL *s) 780 { 781 return(s->verify_mode); 782 } 783 784 int SSL_get_verify_depth(const SSL *s) 785 { 786 return X509_VERIFY_PARAM_get_depth(s->param); 787 } 788 789 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *) 790 { 791 return(s->verify_callback); 792 } 793 794 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 795 { 796 return(ctx->verify_mode); 797 } 798 799 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 800 { 801 return X509_VERIFY_PARAM_get_depth(ctx->param); 802 } 803 804 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *) 805 { 806 return(ctx->default_verify_callback); 807 } 808 809 void SSL_set_verify(SSL *s,int mode, 810 int (*callback)(int ok,X509_STORE_CTX *ctx)) 811 { 812 s->verify_mode=mode; 813 if (callback != NULL) 814 s->verify_callback=callback; 815 } 816 817 void SSL_set_verify_depth(SSL *s,int depth) 818 { 819 X509_VERIFY_PARAM_set_depth(s->param, depth); 820 } 821 822 void SSL_set_read_ahead(SSL *s,int yes) 823 { 824 s->read_ahead=yes; 825 } 826 827 int SSL_get_read_ahead(const SSL *s) 828 { 829 return(s->read_ahead); 830 } 831 832 int SSL_pending(const SSL *s) 833 { 834 /* SSL_pending cannot work properly if read-ahead is enabled 835 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 836 * and it is impossible to fix since SSL_pending cannot report 837 * errors that may be observed while scanning the new data. 838 * (Note that SSL_pending() is often used as a boolean value, 839 * so we'd better not return -1.) 840 */ 841 return(s->method->ssl_pending(s)); 842 } 843 844 X509 *SSL_get_peer_certificate(const SSL *s) 845 { 846 X509 *r; 847 848 if ((s == NULL) || (s->session == NULL)) 849 r=NULL; 850 else 851 r=s->session->peer; 852 853 if (r == NULL) return(r); 854 855 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 856 857 return(r); 858 } 859 860 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 861 { 862 STACK_OF(X509) *r; 863 864 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 865 r=NULL; 866 else 867 r=s->session->sess_cert->cert_chain; 868 869 /* If we are a client, cert_chain includes the peer's own 870 * certificate; if we are a server, it does not. */ 871 872 return(r); 873 } 874 875 /* Now in theory, since the calling process own 't' it should be safe to 876 * modify. We need to be able to read f without being hassled */ 877 void SSL_copy_session_id(SSL *t,const SSL *f) 878 { 879 CERT *tmp; 880 881 /* Do we need to to SSL locking? */ 882 SSL_set_session(t,SSL_get_session(f)); 883 884 /* what if we are setup as SSLv2 but want to talk SSLv3 or 885 * vice-versa */ 886 if (t->method != f->method) 887 { 888 t->method->ssl_free(t); /* cleanup current */ 889 t->method=f->method; /* change method */ 890 t->method->ssl_new(t); /* setup new */ 891 } 892 893 tmp=t->cert; 894 if (f->cert != NULL) 895 { 896 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 897 t->cert=f->cert; 898 } 899 else 900 t->cert=NULL; 901 if (tmp != NULL) ssl_cert_free(tmp); 902 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 903 } 904 905 /* Fix this so it checks all the valid key/cert options */ 906 int SSL_CTX_check_private_key(const SSL_CTX *ctx) 907 { 908 if ( (ctx == NULL) || 909 (ctx->cert == NULL) || 910 (ctx->cert->key->x509 == NULL)) 911 { 912 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 913 return(0); 914 } 915 if (ctx->cert->key->privatekey == NULL) 916 { 917 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 918 return(0); 919 } 920 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 921 } 922 923 /* Fix this function so that it takes an optional type parameter */ 924 int SSL_check_private_key(const SSL *ssl) 925 { 926 if (ssl == NULL) 927 { 928 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 929 return(0); 930 } 931 if (ssl->cert == NULL) 932 { 933 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 934 return 0; 935 } 936 if (ssl->cert->key->x509 == NULL) 937 { 938 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 939 return(0); 940 } 941 if (ssl->cert->key->privatekey == NULL) 942 { 943 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 944 return(0); 945 } 946 return(X509_check_private_key(ssl->cert->key->x509, 947 ssl->cert->key->privatekey)); 948 } 949 950 int SSL_accept(SSL *s) 951 { 952 if (s->handshake_func == 0) 953 /* Not properly initialized yet */ 954 SSL_set_accept_state(s); 955 956 return(s->method->ssl_accept(s)); 957 } 958 959 int SSL_connect(SSL *s) 960 { 961 if (s->handshake_func == 0) 962 /* Not properly initialized yet */ 963 SSL_set_connect_state(s); 964 965 return(s->method->ssl_connect(s)); 966 } 967 968 long SSL_get_default_timeout(const SSL *s) 969 { 970 return(s->method->get_timeout()); 971 } 972 973 int SSL_read(SSL *s,void *buf,int num) 974 { 975 if (s->handshake_func == 0) 976 { 977 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 978 return -1; 979 } 980 981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 982 { 983 s->rwstate=SSL_NOTHING; 984 return(0); 985 } 986 return(s->method->ssl_read(s,buf,num)); 987 } 988 989 int SSL_peek(SSL *s,void *buf,int num) 990 { 991 if (s->handshake_func == 0) 992 { 993 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 994 return -1; 995 } 996 997 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 998 { 999 return(0); 1000 } 1001 return(s->method->ssl_peek(s,buf,num)); 1002 } 1003 1004 int SSL_write(SSL *s,const void *buf,int num) 1005 { 1006 if (s->handshake_func == 0) 1007 { 1008 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 1009 return -1; 1010 } 1011 1012 if (s->shutdown & SSL_SENT_SHUTDOWN) 1013 { 1014 s->rwstate=SSL_NOTHING; 1015 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 1016 return(-1); 1017 } 1018 return(s->method->ssl_write(s,buf,num)); 1019 } 1020 1021 int SSL_shutdown(SSL *s) 1022 { 1023 /* Note that this function behaves differently from what one might 1024 * expect. Return values are 0 for no success (yet), 1025 * 1 for success; but calling it once is usually not enough, 1026 * even if blocking I/O is used (see ssl3_shutdown). 1027 */ 1028 1029 if (s->handshake_func == 0) 1030 { 1031 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1032 return -1; 1033 } 1034 1035 if ((s != NULL) && !SSL_in_init(s)) 1036 return(s->method->ssl_shutdown(s)); 1037 else 1038 return(1); 1039 } 1040 1041 int SSL_renegotiate(SSL *s) 1042 { 1043 if (s->renegotiate == 0) 1044 s->renegotiate=1; 1045 1046 s->new_session=1; 1047 1048 return(s->method->ssl_renegotiate(s)); 1049 } 1050 1051 int SSL_renegotiate_abbreviated(SSL *s) 1052 { 1053 if (s->renegotiate == 0) 1054 s->renegotiate=1; 1055 1056 s->new_session=0; 1057 1058 return(s->method->ssl_renegotiate(s)); 1059 } 1060 1061 int SSL_renegotiate_pending(SSL *s) 1062 { 1063 /* becomes true when negotiation is requested; 1064 * false again once a handshake has finished */ 1065 return (s->renegotiate != 0); 1066 } 1067 1068 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 1069 { 1070 long l; 1071 1072 switch (cmd) 1073 { 1074 case SSL_CTRL_GET_READ_AHEAD: 1075 return(s->read_ahead); 1076 case SSL_CTRL_SET_READ_AHEAD: 1077 l=s->read_ahead; 1078 s->read_ahead=larg; 1079 return(l); 1080 1081 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1082 s->msg_callback_arg = parg; 1083 return 1; 1084 1085 case SSL_CTRL_OPTIONS: 1086 return(s->options|=larg); 1087 case SSL_CTRL_CLEAR_OPTIONS: 1088 return(s->options&=~larg); 1089 case SSL_CTRL_MODE: 1090 return(s->mode|=larg); 1091 case SSL_CTRL_CLEAR_MODE: 1092 return(s->mode &=~larg); 1093 case SSL_CTRL_GET_MAX_CERT_LIST: 1094 return(s->max_cert_list); 1095 case SSL_CTRL_SET_MAX_CERT_LIST: 1096 l=s->max_cert_list; 1097 s->max_cert_list=larg; 1098 return(l); 1099 case SSL_CTRL_SET_MTU: 1100 #ifndef OPENSSL_NO_DTLS1 1101 if (larg < (long)dtls1_min_mtu()) 1102 return 0; 1103 #endif 1104 1105 if (SSL_version(s) == DTLS1_VERSION || 1106 SSL_version(s) == DTLS1_BAD_VER) 1107 { 1108 s->d1->mtu = larg; 1109 return larg; 1110 } 1111 return 0; 1112 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1113 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1114 return 0; 1115 s->max_send_fragment = larg; 1116 return 1; 1117 case SSL_CTRL_GET_RI_SUPPORT: 1118 if (s->s3) 1119 return s->s3->send_connection_binding; 1120 else return 0; 1121 default: 1122 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 1123 } 1124 } 1125 1126 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1127 { 1128 switch(cmd) 1129 { 1130 case SSL_CTRL_SET_MSG_CALLBACK: 1131 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1132 return 1; 1133 1134 default: 1135 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 1136 } 1137 } 1138 1139 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1140 { 1141 return ctx->sessions; 1142 } 1143 1144 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 1145 { 1146 long l; 1147 1148 switch (cmd) 1149 { 1150 case SSL_CTRL_GET_READ_AHEAD: 1151 return(ctx->read_ahead); 1152 case SSL_CTRL_SET_READ_AHEAD: 1153 l=ctx->read_ahead; 1154 ctx->read_ahead=larg; 1155 return(l); 1156 1157 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1158 ctx->msg_callback_arg = parg; 1159 return 1; 1160 1161 case SSL_CTRL_GET_MAX_CERT_LIST: 1162 return(ctx->max_cert_list); 1163 case SSL_CTRL_SET_MAX_CERT_LIST: 1164 l=ctx->max_cert_list; 1165 ctx->max_cert_list=larg; 1166 return(l); 1167 1168 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1169 l=ctx->session_cache_size; 1170 ctx->session_cache_size=larg; 1171 return(l); 1172 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1173 return(ctx->session_cache_size); 1174 case SSL_CTRL_SET_SESS_CACHE_MODE: 1175 l=ctx->session_cache_mode; 1176 ctx->session_cache_mode=larg; 1177 return(l); 1178 case SSL_CTRL_GET_SESS_CACHE_MODE: 1179 return(ctx->session_cache_mode); 1180 1181 case SSL_CTRL_SESS_NUMBER: 1182 return(lh_SSL_SESSION_num_items(ctx->sessions)); 1183 case SSL_CTRL_SESS_CONNECT: 1184 return(ctx->stats.sess_connect); 1185 case SSL_CTRL_SESS_CONNECT_GOOD: 1186 return(ctx->stats.sess_connect_good); 1187 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1188 return(ctx->stats.sess_connect_renegotiate); 1189 case SSL_CTRL_SESS_ACCEPT: 1190 return(ctx->stats.sess_accept); 1191 case SSL_CTRL_SESS_ACCEPT_GOOD: 1192 return(ctx->stats.sess_accept_good); 1193 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1194 return(ctx->stats.sess_accept_renegotiate); 1195 case SSL_CTRL_SESS_HIT: 1196 return(ctx->stats.sess_hit); 1197 case SSL_CTRL_SESS_CB_HIT: 1198 return(ctx->stats.sess_cb_hit); 1199 case SSL_CTRL_SESS_MISSES: 1200 return(ctx->stats.sess_miss); 1201 case SSL_CTRL_SESS_TIMEOUTS: 1202 return(ctx->stats.sess_timeout); 1203 case SSL_CTRL_SESS_CACHE_FULL: 1204 return(ctx->stats.sess_cache_full); 1205 case SSL_CTRL_OPTIONS: 1206 return(ctx->options|=larg); 1207 case SSL_CTRL_CLEAR_OPTIONS: 1208 return(ctx->options&=~larg); 1209 case SSL_CTRL_MODE: 1210 return(ctx->mode|=larg); 1211 case SSL_CTRL_CLEAR_MODE: 1212 return(ctx->mode&=~larg); 1213 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1214 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1215 return 0; 1216 ctx->max_send_fragment = larg; 1217 return 1; 1218 default: 1219 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1220 } 1221 } 1222 1223 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1224 { 1225 switch(cmd) 1226 { 1227 case SSL_CTRL_SET_MSG_CALLBACK: 1228 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1229 return 1; 1230 1231 default: 1232 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1233 } 1234 } 1235 1236 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1237 { 1238 long l; 1239 1240 l=a->id-b->id; 1241 if (l == 0L) 1242 return(0); 1243 else 1244 return((l > 0)?1:-1); 1245 } 1246 1247 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1248 const SSL_CIPHER * const *bp) 1249 { 1250 long l; 1251 1252 l=(*ap)->id-(*bp)->id; 1253 if (l == 0L) 1254 return(0); 1255 else 1256 return((l > 0)?1:-1); 1257 } 1258 1259 /** return a STACK of the ciphers available for the SSL and in order of 1260 * preference */ 1261 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1262 { 1263 if (s != NULL) 1264 { 1265 if (s->cipher_list != NULL) 1266 { 1267 return(s->cipher_list); 1268 } 1269 else if ((s->ctx != NULL) && 1270 (s->ctx->cipher_list != NULL)) 1271 { 1272 return(s->ctx->cipher_list); 1273 } 1274 } 1275 return(NULL); 1276 } 1277 1278 /** return a STACK of the ciphers available for the SSL and in order of 1279 * algorithm id */ 1280 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1281 { 1282 if (s != NULL) 1283 { 1284 if (s->cipher_list_by_id != NULL) 1285 { 1286 return(s->cipher_list_by_id); 1287 } 1288 else if ((s->ctx != NULL) && 1289 (s->ctx->cipher_list_by_id != NULL)) 1290 { 1291 return(s->ctx->cipher_list_by_id); 1292 } 1293 } 1294 return(NULL); 1295 } 1296 1297 /** The old interface to get the same thing as SSL_get_ciphers() */ 1298 const char *SSL_get_cipher_list(const SSL *s,int n) 1299 { 1300 SSL_CIPHER *c; 1301 STACK_OF(SSL_CIPHER) *sk; 1302 1303 if (s == NULL) return(NULL); 1304 sk=SSL_get_ciphers(s); 1305 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1306 return(NULL); 1307 c=sk_SSL_CIPHER_value(sk,n); 1308 if (c == NULL) return(NULL); 1309 return(c->name); 1310 } 1311 1312 /** specify the ciphers to be used by default by the SSL_CTX */ 1313 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1314 { 1315 STACK_OF(SSL_CIPHER) *sk; 1316 1317 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1318 &ctx->cipher_list_by_id,str); 1319 /* ssl_create_cipher_list may return an empty stack if it 1320 * was unable to find a cipher matching the given rule string 1321 * (for example if the rule string specifies a cipher which 1322 * has been disabled). This is not an error as far as 1323 * ssl_create_cipher_list is concerned, and hence 1324 * ctx->cipher_list and ctx->cipher_list_by_id has been 1325 * updated. */ 1326 if (sk == NULL) 1327 return 0; 1328 else if (sk_SSL_CIPHER_num(sk) == 0) 1329 { 1330 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1331 return 0; 1332 } 1333 return 1; 1334 } 1335 1336 /** specify the ciphers to be used by the SSL */ 1337 int SSL_set_cipher_list(SSL *s,const char *str) 1338 { 1339 STACK_OF(SSL_CIPHER) *sk; 1340 1341 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1342 &s->cipher_list_by_id,str); 1343 /* see comment in SSL_CTX_set_cipher_list */ 1344 if (sk == NULL) 1345 return 0; 1346 else if (sk_SSL_CIPHER_num(sk) == 0) 1347 { 1348 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1349 return 0; 1350 } 1351 return 1; 1352 } 1353 1354 /** specify the ciphers to be used by the SSL */ 1355 int SSL_set_cipher_lists(SSL *s,STACK_OF(SSL_CIPHER) *sk) 1356 { 1357 STACK_OF(SSL_CIPHER) *tmp_cipher_list; 1358 1359 if (sk == NULL) 1360 return 0; 1361 1362 /* Based on end of ssl_create_cipher_list */ 1363 tmp_cipher_list = sk_SSL_CIPHER_dup(sk); 1364 if (tmp_cipher_list == NULL) 1365 { 1366 return 0; 1367 } 1368 if (s->cipher_list != NULL) 1369 sk_SSL_CIPHER_free(s->cipher_list); 1370 s->cipher_list = sk; 1371 if (s->cipher_list_by_id != NULL) 1372 sk_SSL_CIPHER_free(s->cipher_list_by_id); 1373 s->cipher_list_by_id = tmp_cipher_list; 1374 (void)sk_SSL_CIPHER_set_cmp_func(s->cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1375 1376 sk_SSL_CIPHER_sort(s->cipher_list_by_id); 1377 return 1; 1378 } 1379 1380 /* works well for SSLv2, not so good for SSLv3 */ 1381 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len) 1382 { 1383 char *p; 1384 STACK_OF(SSL_CIPHER) *sk; 1385 SSL_CIPHER *c; 1386 int i; 1387 1388 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1389 (len < 2)) 1390 return(NULL); 1391 1392 p=buf; 1393 sk=s->session->ciphers; 1394 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1395 { 1396 int n; 1397 1398 c=sk_SSL_CIPHER_value(sk,i); 1399 n=strlen(c->name); 1400 if (n+1 > len) 1401 { 1402 if (p != buf) 1403 --p; 1404 *p='\0'; 1405 return buf; 1406 } 1407 strcpy(p,c->name); 1408 p+=n; 1409 *(p++)=':'; 1410 len-=n+1; 1411 } 1412 p[-1]='\0'; 1413 return(buf); 1414 } 1415 1416 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1417 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1418 { 1419 int i,j=0; 1420 SSL_CIPHER *c; 1421 unsigned char *q; 1422 #ifndef OPENSSL_NO_KRB5 1423 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1424 #endif /* OPENSSL_NO_KRB5 */ 1425 1426 if (sk == NULL) return(0); 1427 q=p; 1428 1429 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1430 { 1431 c=sk_SSL_CIPHER_value(sk,i); 1432 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1433 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1434 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1435 continue; 1436 #ifndef OPENSSL_NO_KRB5 1437 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1438 nokrb5) 1439 continue; 1440 #endif /* OPENSSL_NO_KRB5 */ 1441 #ifndef OPENSSL_NO_PSK 1442 /* with PSK there must be client callback set */ 1443 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1444 s->psk_client_callback == NULL) 1445 continue; 1446 #endif /* OPENSSL_NO_PSK */ 1447 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p); 1448 p+=j; 1449 } 1450 /* If p == q, no ciphers and caller indicates an error. Otherwise 1451 * add SCSV if not renegotiating. 1452 */ 1453 if (p != q && !s->renegotiate) 1454 { 1455 static SSL_CIPHER scsv = 1456 { 1457 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1458 }; 1459 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p); 1460 p+=j; 1461 #ifdef OPENSSL_RI_DEBUG 1462 fprintf(stderr, "SCSV sent by client\n"); 1463 #endif 1464 } 1465 1466 return(p-q); 1467 } 1468 1469 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1470 STACK_OF(SSL_CIPHER) **skp) 1471 { 1472 const SSL_CIPHER *c; 1473 STACK_OF(SSL_CIPHER) *sk; 1474 int i,n; 1475 if (s->s3) 1476 s->s3->send_connection_binding = 0; 1477 1478 n=ssl_put_cipher_by_char(s,NULL,NULL); 1479 if ((num%n) != 0) 1480 { 1481 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1482 return(NULL); 1483 } 1484 if ((skp == NULL) || (*skp == NULL)) 1485 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1486 else 1487 { 1488 sk= *skp; 1489 sk_SSL_CIPHER_zero(sk); 1490 } 1491 1492 for (i=0; i<num; i+=n) 1493 { 1494 /* Check for SCSV */ 1495 if (s->s3 && (n != 3 || !p[0]) && 1496 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1497 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1498 { 1499 /* SCSV fatal if renegotiating */ 1500 if (s->renegotiate) 1501 { 1502 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1503 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1504 goto err; 1505 } 1506 s->s3->send_connection_binding = 1; 1507 p += n; 1508 #ifdef OPENSSL_RI_DEBUG 1509 fprintf(stderr, "SCSV received by server\n"); 1510 #endif 1511 continue; 1512 } 1513 1514 c=ssl_get_cipher_by_char(s,p); 1515 p+=n; 1516 if (c != NULL) 1517 { 1518 if (!sk_SSL_CIPHER_push(sk,c)) 1519 { 1520 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1521 goto err; 1522 } 1523 } 1524 } 1525 1526 if (skp != NULL) 1527 *skp=sk; 1528 return(sk); 1529 err: 1530 if ((skp == NULL) || (*skp == NULL)) 1531 sk_SSL_CIPHER_free(sk); 1532 return(NULL); 1533 } 1534 1535 1536 #ifndef OPENSSL_NO_TLSEXT 1537 /** return a servername extension value if provided in Client Hello, or NULL. 1538 * So far, only host_name types are defined (RFC 3546). 1539 */ 1540 1541 const char *SSL_get_servername(const SSL *s, const int type) 1542 { 1543 if (type != TLSEXT_NAMETYPE_host_name) 1544 return NULL; 1545 1546 return s->session && !s->tlsext_hostname ? 1547 s->session->tlsext_hostname : 1548 s->tlsext_hostname; 1549 } 1550 1551 int SSL_get_servername_type(const SSL *s) 1552 { 1553 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1554 return TLSEXT_NAMETYPE_host_name; 1555 return -1; 1556 } 1557 1558 # ifndef OPENSSL_NO_NEXTPROTONEG 1559 /* SSL_select_next_proto implements the standard protocol selection. It is 1560 * expected that this function is called from the callback set by 1561 * SSL_CTX_set_next_proto_select_cb. 1562 * 1563 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1564 * strings. The length byte itself is not included in the length. A byte 1565 * string of length 0 is invalid. No byte string may be truncated. 1566 * 1567 * The current, but experimental algorithm for selecting the protocol is: 1568 * 1569 * 1) If the server doesn't support NPN then this is indicated to the 1570 * callback. In this case, the client application has to abort the connection 1571 * or have a default application level protocol. 1572 * 1573 * 2) If the server supports NPN, but advertises an empty list then the 1574 * client selects the first protcol in its list, but indicates via the 1575 * API that this fallback case was enacted. 1576 * 1577 * 3) Otherwise, the client finds the first protocol in the server's list 1578 * that it supports and selects this protocol. This is because it's 1579 * assumed that the server has better information about which protocol 1580 * a client should use. 1581 * 1582 * 4) If the client doesn't support any of the server's advertised 1583 * protocols, then this is treated the same as case 2. 1584 * 1585 * It returns either 1586 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1587 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1588 */ 1589 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, const unsigned char *server, unsigned int server_len, const unsigned char *client, unsigned int client_len) 1590 { 1591 unsigned int i, j; 1592 const unsigned char *result; 1593 int status = OPENSSL_NPN_UNSUPPORTED; 1594 1595 /* For each protocol in server preference order, see if we support it. */ 1596 for (i = 0; i < server_len; ) 1597 { 1598 for (j = 0; j < client_len; ) 1599 { 1600 if (server[i] == client[j] && 1601 memcmp(&server[i+1], &client[j+1], server[i]) == 0) 1602 { 1603 /* We found a match */ 1604 result = &server[i]; 1605 status = OPENSSL_NPN_NEGOTIATED; 1606 goto found; 1607 } 1608 j += client[j]; 1609 j++; 1610 } 1611 i += server[i]; 1612 i++; 1613 } 1614 1615 /* There's no overlap between our protocols and the server's list. */ 1616 result = client; 1617 status = OPENSSL_NPN_NO_OVERLAP; 1618 1619 found: 1620 *out = (unsigned char *) result + 1; 1621 *outlen = result[0]; 1622 return status; 1623 } 1624 1625 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1626 * requested protocol for this connection and returns 0. If the client didn't 1627 * request any protocol, then *data is set to NULL. 1628 * 1629 * Note that the client can request any protocol it chooses. The value returned 1630 * from this function need not be a member of the list of supported protocols 1631 * provided by the callback. 1632 */ 1633 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1634 { 1635 *data = s->next_proto_negotiated; 1636 if (!*data) { 1637 *len = 0; 1638 } else { 1639 *len = s->next_proto_negotiated_len; 1640 } 1641 } 1642 1643 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1644 * TLS server needs a list of supported protocols for Next Protocol 1645 * Negotiation. The returned list must be in wire format. The list is returned 1646 * by setting |out| to point to it and |outlen| to its length. This memory will 1647 * not be modified, but one should assume that the SSL* keeps a reference to 1648 * it. 1649 * 1650 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no 1651 * such extension will be included in the ServerHello. */ 1652 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1653 { 1654 ctx->next_protos_advertised_cb = cb; 1655 ctx->next_protos_advertised_cb_arg = arg; 1656 } 1657 1658 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1659 * client needs to select a protocol from the server's provided list. |out| 1660 * must be set to point to the selected protocol (which may be within |in|). 1661 * The length of the protocol name must be written into |outlen|. The server's 1662 * advertised protocols are provided in |in| and |inlen|. The callback can 1663 * assume that |in| is syntactically valid. 1664 * 1665 * The client must select a protocol. It is fatal to the connection if this 1666 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1667 */ 1668 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1669 { 1670 ctx->next_proto_select_cb = cb; 1671 ctx->next_proto_select_cb_arg = arg; 1672 } 1673 # endif 1674 1675 /* SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. 1676 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1677 * length-prefixed strings). 1678 * 1679 * Returns 0 on success. */ 1680 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char* protos, 1681 unsigned protos_len) 1682 { 1683 if (ctx->alpn_client_proto_list) 1684 OPENSSL_free(ctx->alpn_client_proto_list); 1685 1686 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1687 if (!ctx->alpn_client_proto_list) 1688 return 1; 1689 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1690 ctx->alpn_client_proto_list_len = protos_len; 1691 1692 return 0; 1693 } 1694 1695 /* SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. 1696 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1697 * length-prefixed strings). 1698 * 1699 * Returns 0 on success. */ 1700 int SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1701 unsigned protos_len) 1702 { 1703 if (ssl->alpn_client_proto_list) 1704 OPENSSL_free(ssl->alpn_client_proto_list); 1705 1706 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1707 if (!ssl->alpn_client_proto_list) 1708 return 1; 1709 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1710 ssl->alpn_client_proto_list_len = protos_len; 1711 1712 return 0; 1713 } 1714 1715 /* SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called 1716 * during ClientHello processing in order to select an ALPN protocol from the 1717 * client's list of offered protocols. */ 1718 void SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1719 int (*cb) (SSL *ssl, 1720 const unsigned char **out, 1721 unsigned char *outlen, 1722 const unsigned char *in, 1723 unsigned int inlen, 1724 void *arg), 1725 void *arg) 1726 { 1727 ctx->alpn_select_cb = cb; 1728 ctx->alpn_select_cb_arg = arg; 1729 } 1730 1731 /* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|. 1732 * On return it sets |*data| to point to |*len| bytes of protocol name (not 1733 * including the leading length-prefix byte). If the server didn't respond with 1734 * a negotiated protocol then |*len| will be zero. */ 1735 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1736 unsigned *len) 1737 { 1738 *data = NULL; 1739 if (ssl->s3) 1740 *data = ssl->s3->alpn_selected; 1741 if (*data == NULL) 1742 *len = 0; 1743 else 1744 *len = ssl->s3->alpn_selected_len; 1745 } 1746 #endif 1747 1748 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1749 const char *label, size_t llen, const unsigned char *p, size_t plen, 1750 int use_context) 1751 { 1752 if (s->version < TLS1_VERSION) 1753 return -1; 1754 1755 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1756 llen, p, plen, 1757 use_context); 1758 } 1759 1760 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1761 { 1762 unsigned long l; 1763 1764 l=(unsigned long) 1765 ((unsigned int) a->session_id[0] )| 1766 ((unsigned int) a->session_id[1]<< 8L)| 1767 ((unsigned long)a->session_id[2]<<16L)| 1768 ((unsigned long)a->session_id[3]<<24L); 1769 return(l); 1770 } 1771 1772 /* NB: If this function (or indeed the hash function which uses a sort of 1773 * coarser function than this one) is changed, ensure 1774 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1775 * able to construct an SSL_SESSION that will collide with any existing session 1776 * with a matching session ID. */ 1777 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1778 { 1779 if (a->ssl_version != b->ssl_version) 1780 return(1); 1781 if (a->session_id_length != b->session_id_length) 1782 return(1); 1783 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1784 } 1785 1786 /* These wrapper functions should remain rather than redeclaring 1787 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1788 * variable. The reason is that the functions aren't static, they're exposed via 1789 * ssl.h. */ 1790 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1791 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1792 1793 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1794 { 1795 SSL_CTX *ret=NULL; 1796 1797 if (meth == NULL) 1798 { 1799 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1800 return(NULL); 1801 } 1802 1803 #ifdef OPENSSL_FIPS 1804 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1805 { 1806 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1807 return NULL; 1808 } 1809 #endif 1810 1811 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1812 { 1813 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1814 goto err; 1815 } 1816 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1817 if (ret == NULL) 1818 goto err; 1819 1820 memset(ret,0,sizeof(SSL_CTX)); 1821 1822 ret->method=meth; 1823 1824 ret->cert_store=NULL; 1825 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1826 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1827 ret->session_cache_head=NULL; 1828 ret->session_cache_tail=NULL; 1829 1830 /* We take the system default */ 1831 ret->session_timeout=meth->get_timeout(); 1832 1833 ret->new_session_cb=0; 1834 ret->remove_session_cb=0; 1835 ret->get_session_cb=0; 1836 ret->generate_session_id=0; 1837 1838 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1839 1840 ret->references=1; 1841 ret->quiet_shutdown=0; 1842 1843 /* ret->cipher=NULL;*/ 1844 /* ret->s2->challenge=NULL; 1845 ret->master_key=NULL; 1846 ret->key_arg=NULL; 1847 ret->s2->conn_id=NULL; */ 1848 1849 ret->info_callback=NULL; 1850 1851 ret->app_verify_callback=0; 1852 ret->app_verify_arg=NULL; 1853 1854 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1855 ret->read_ahead=0; 1856 ret->msg_callback=0; 1857 ret->msg_callback_arg=NULL; 1858 ret->verify_mode=SSL_VERIFY_NONE; 1859 #if 0 1860 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1861 #endif 1862 ret->sid_ctx_length=0; 1863 ret->default_verify_callback=NULL; 1864 if ((ret->cert=ssl_cert_new()) == NULL) 1865 goto err; 1866 1867 ret->default_passwd_callback=0; 1868 ret->default_passwd_callback_userdata=NULL; 1869 ret->client_cert_cb=0; 1870 ret->app_gen_cookie_cb=0; 1871 ret->app_verify_cookie_cb=0; 1872 1873 ret->sessions=lh_SSL_SESSION_new(); 1874 if (ret->sessions == NULL) goto err; 1875 ret->cert_store=X509_STORE_new(); 1876 if (ret->cert_store == NULL) goto err; 1877 1878 ssl_create_cipher_list(ret->method, 1879 &ret->cipher_list,&ret->cipher_list_by_id, 1880 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1881 if (ret->cipher_list == NULL 1882 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1883 { 1884 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1885 goto err2; 1886 } 1887 1888 ret->param = X509_VERIFY_PARAM_new(); 1889 if (!ret->param) 1890 goto err; 1891 1892 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1893 { 1894 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1895 goto err2; 1896 } 1897 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1898 { 1899 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1900 goto err2; 1901 } 1902 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1903 { 1904 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1905 goto err2; 1906 } 1907 1908 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1909 goto err; 1910 1911 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1912 1913 ret->extra_certs=NULL; 1914 ret->comp_methods=SSL_COMP_get_compression_methods(); 1915 1916 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1917 1918 #ifndef OPENSSL_NO_TLSEXT 1919 ret->tlsext_servername_callback = 0; 1920 ret->tlsext_servername_arg = NULL; 1921 /* Setup RFC4507 ticket keys */ 1922 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1923 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1924 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1925 ret->options |= SSL_OP_NO_TICKET; 1926 1927 ret->tlsext_status_cb = 0; 1928 ret->tlsext_status_arg = NULL; 1929 1930 # ifndef OPENSSL_NO_NEXTPROTONEG 1931 ret->next_protos_advertised_cb = 0; 1932 ret->next_proto_select_cb = 0; 1933 # endif 1934 #endif 1935 #ifndef OPENSSL_NO_PSK 1936 ret->psk_identity_hint=NULL; 1937 ret->psk_client_callback=NULL; 1938 ret->psk_server_callback=NULL; 1939 #endif 1940 #ifndef OPENSSL_NO_SRP 1941 SSL_CTX_SRP_CTX_init(ret); 1942 #endif 1943 #ifndef OPENSSL_NO_BUF_FREELISTS 1944 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1945 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1946 if (!ret->rbuf_freelist) 1947 goto err; 1948 ret->rbuf_freelist->chunklen = 0; 1949 ret->rbuf_freelist->len = 0; 1950 ret->rbuf_freelist->head = NULL; 1951 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1952 if (!ret->wbuf_freelist) 1953 { 1954 OPENSSL_free(ret->rbuf_freelist); 1955 goto err; 1956 } 1957 ret->wbuf_freelist->chunklen = 0; 1958 ret->wbuf_freelist->len = 0; 1959 ret->wbuf_freelist->head = NULL; 1960 #endif 1961 #ifndef OPENSSL_NO_ENGINE 1962 ret->client_cert_engine = NULL; 1963 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1964 #define eng_strx(x) #x 1965 #define eng_str(x) eng_strx(x) 1966 /* Use specific client engine automatically... ignore errors */ 1967 { 1968 ENGINE *eng; 1969 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1970 if (!eng) 1971 { 1972 ERR_clear_error(); 1973 ENGINE_load_builtin_engines(); 1974 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1975 } 1976 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1977 ERR_clear_error(); 1978 } 1979 #endif 1980 #endif 1981 /* Default is to connect to non-RI servers. When RI is more widely 1982 * deployed might change this. 1983 */ 1984 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1985 1986 return(ret); 1987 err: 1988 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1989 err2: 1990 if (ret != NULL) SSL_CTX_free(ret); 1991 return(NULL); 1992 } 1993 1994 #if 0 1995 static void SSL_COMP_free(SSL_COMP *comp) 1996 { OPENSSL_free(comp); } 1997 #endif 1998 1999 #ifndef OPENSSL_NO_BUF_FREELISTS 2000 static void 2001 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 2002 { 2003 SSL3_BUF_FREELIST_ENTRY *ent, *next; 2004 for (ent = list->head; ent; ent = next) 2005 { 2006 next = ent->next; 2007 OPENSSL_free(ent); 2008 } 2009 OPENSSL_free(list); 2010 } 2011 #endif 2012 2013 void SSL_CTX_free(SSL_CTX *a) 2014 { 2015 int i; 2016 2017 if (a == NULL) return; 2018 2019 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 2020 #ifdef REF_PRINT 2021 REF_PRINT("SSL_CTX",a); 2022 #endif 2023 if (i > 0) return; 2024 #ifdef REF_CHECK 2025 if (i < 0) 2026 { 2027 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 2028 abort(); /* ok */ 2029 } 2030 #endif 2031 2032 if (a->param) 2033 X509_VERIFY_PARAM_free(a->param); 2034 2035 /* 2036 * Free internal session cache. However: the remove_cb() may reference 2037 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2038 * after the sessions were flushed. 2039 * As the ex_data handling routines might also touch the session cache, 2040 * the most secure solution seems to be: empty (flush) the cache, then 2041 * free ex_data, then finally free the cache. 2042 * (See ticket [openssl.org #212].) 2043 */ 2044 if (a->sessions != NULL) 2045 SSL_CTX_flush_sessions(a,0); 2046 2047 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 2048 2049 if (a->sessions != NULL) 2050 lh_SSL_SESSION_free(a->sessions); 2051 2052 if (a->cert_store != NULL) 2053 X509_STORE_free(a->cert_store); 2054 if (a->cipher_list != NULL) 2055 sk_SSL_CIPHER_free(a->cipher_list); 2056 if (a->cipher_list_by_id != NULL) 2057 sk_SSL_CIPHER_free(a->cipher_list_by_id); 2058 if (a->cert != NULL) 2059 ssl_cert_free(a->cert); 2060 if (a->client_CA != NULL) 2061 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 2062 if (a->extra_certs != NULL) 2063 sk_X509_pop_free(a->extra_certs,X509_free); 2064 #if 0 /* This should never be done, since it removes a global database */ 2065 if (a->comp_methods != NULL) 2066 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 2067 #else 2068 a->comp_methods = NULL; 2069 #endif 2070 2071 #ifndef OPENSSL_NO_SRTP 2072 if (a->srtp_profiles) 2073 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 2074 #endif 2075 2076 #ifndef OPENSSL_NO_PSK 2077 if (a->psk_identity_hint) 2078 OPENSSL_free(a->psk_identity_hint); 2079 #endif 2080 #ifndef OPENSSL_NO_SRP 2081 SSL_CTX_SRP_CTX_free(a); 2082 #endif 2083 #ifndef OPENSSL_NO_ENGINE 2084 if (a->client_cert_engine) 2085 ENGINE_finish(a->client_cert_engine); 2086 #endif 2087 2088 #ifndef OPENSSL_NO_BUF_FREELISTS 2089 if (a->wbuf_freelist) 2090 ssl_buf_freelist_free(a->wbuf_freelist); 2091 if (a->rbuf_freelist) 2092 ssl_buf_freelist_free(a->rbuf_freelist); 2093 #endif 2094 2095 #ifndef OPENSSL_NO_TLSEXT 2096 if (a->tlsext_channel_id_private) 2097 EVP_PKEY_free(a->tlsext_channel_id_private); 2098 if (a->alpn_client_proto_list != NULL) 2099 OPENSSL_free(a->alpn_client_proto_list); 2100 #endif 2101 2102 OPENSSL_free(a); 2103 } 2104 2105 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2106 { 2107 ctx->default_passwd_callback=cb; 2108 } 2109 2110 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 2111 { 2112 ctx->default_passwd_callback_userdata=u; 2113 } 2114 2115 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 2116 { 2117 ctx->app_verify_callback=cb; 2118 ctx->app_verify_arg=arg; 2119 } 2120 2121 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 2122 { 2123 ctx->verify_mode=mode; 2124 ctx->default_verify_callback=cb; 2125 } 2126 2127 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 2128 { 2129 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2130 } 2131 2132 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2133 { 2134 CERT_PKEY *cpk; 2135 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 2136 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 2137 int rsa_tmp_export,dh_tmp_export,kl; 2138 unsigned long mask_k,mask_a,emask_k,emask_a; 2139 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2140 #ifndef OPENSSL_NO_ECDH 2141 int have_ecdh_tmp; 2142 #endif 2143 X509 *x = NULL; 2144 EVP_PKEY *ecc_pkey = NULL; 2145 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2146 2147 if (c == NULL) return; 2148 2149 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 2150 2151 #ifndef OPENSSL_NO_RSA 2152 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2153 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 2154 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2155 #else 2156 rsa_tmp=rsa_tmp_export=0; 2157 #endif 2158 #ifndef OPENSSL_NO_DH 2159 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2160 dh_tmp_export=(c->dh_tmp_cb != NULL || 2161 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2162 #else 2163 dh_tmp=dh_tmp_export=0; 2164 #endif 2165 2166 #ifndef OPENSSL_NO_ECDH 2167 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2168 #endif 2169 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 2170 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 2171 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2172 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2173 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2174 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2175 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2176 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 2177 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2178 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2179 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 2180 /* FIX THIS EAY EAY EAY */ 2181 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2182 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2183 cpk= &(c->pkeys[SSL_PKEY_ECC]); 2184 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 2185 mask_k=0; 2186 mask_a=0; 2187 emask_k=0; 2188 emask_a=0; 2189 2190 2191 2192 #ifdef CIPHER_DEBUG 2193 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2194 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 2195 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 2196 #endif 2197 2198 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2199 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2200 mask_k |= SSL_kGOST; 2201 mask_a |= SSL_aGOST01; 2202 } 2203 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2204 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2205 mask_k |= SSL_kGOST; 2206 mask_a |= SSL_aGOST94; 2207 } 2208 2209 if (rsa_enc || (rsa_tmp && rsa_sign)) 2210 mask_k|=SSL_kRSA; 2211 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2212 emask_k|=SSL_kRSA; 2213 2214 #if 0 2215 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2216 if ( (dh_tmp || dh_rsa || dh_dsa) && 2217 (rsa_enc || rsa_sign || dsa_sign)) 2218 mask_k|=SSL_kEDH; 2219 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2220 (rsa_enc || rsa_sign || dsa_sign)) 2221 emask_k|=SSL_kEDH; 2222 #endif 2223 2224 if (dh_tmp_export) 2225 emask_k|=SSL_kEDH; 2226 2227 if (dh_tmp) 2228 mask_k|=SSL_kEDH; 2229 2230 if (dh_rsa) mask_k|=SSL_kDHr; 2231 if (dh_rsa_export) emask_k|=SSL_kDHr; 2232 2233 if (dh_dsa) mask_k|=SSL_kDHd; 2234 if (dh_dsa_export) emask_k|=SSL_kDHd; 2235 2236 if (rsa_enc || rsa_sign) 2237 { 2238 mask_a|=SSL_aRSA; 2239 emask_a|=SSL_aRSA; 2240 } 2241 2242 if (dsa_sign) 2243 { 2244 mask_a|=SSL_aDSS; 2245 emask_a|=SSL_aDSS; 2246 } 2247 2248 mask_a|=SSL_aNULL; 2249 emask_a|=SSL_aNULL; 2250 2251 #ifndef OPENSSL_NO_KRB5 2252 mask_k|=SSL_kKRB5; 2253 mask_a|=SSL_aKRB5; 2254 emask_k|=SSL_kKRB5; 2255 emask_a|=SSL_aKRB5; 2256 #endif 2257 2258 /* An ECC certificate may be usable for ECDH and/or 2259 * ECDSA cipher suites depending on the key usage extension. 2260 */ 2261 if (have_ecc_cert) 2262 { 2263 /* This call populates extension flags (ex_flags) */ 2264 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2265 X509_check_purpose(x, -1, 0); 2266 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2267 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2268 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2269 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2270 ecc_pkey = X509_get_pubkey(x); 2271 ecc_pkey_size = (ecc_pkey != NULL) ? 2272 EVP_PKEY_bits(ecc_pkey) : 0; 2273 EVP_PKEY_free(ecc_pkey); 2274 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2275 { 2276 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2277 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2278 } 2279 #ifndef OPENSSL_NO_ECDH 2280 if (ecdh_ok) 2281 { 2282 2283 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) 2284 { 2285 mask_k|=SSL_kECDHr; 2286 mask_a|=SSL_aECDH; 2287 if (ecc_pkey_size <= 163) 2288 { 2289 emask_k|=SSL_kECDHr; 2290 emask_a|=SSL_aECDH; 2291 } 2292 } 2293 2294 if (pk_nid == NID_X9_62_id_ecPublicKey) 2295 { 2296 mask_k|=SSL_kECDHe; 2297 mask_a|=SSL_aECDH; 2298 if (ecc_pkey_size <= 163) 2299 { 2300 emask_k|=SSL_kECDHe; 2301 emask_a|=SSL_aECDH; 2302 } 2303 } 2304 } 2305 #endif 2306 #ifndef OPENSSL_NO_ECDSA 2307 if (ecdsa_ok) 2308 { 2309 mask_a|=SSL_aECDSA; 2310 emask_a|=SSL_aECDSA; 2311 } 2312 #endif 2313 } 2314 2315 #ifndef OPENSSL_NO_ECDH 2316 if (have_ecdh_tmp) 2317 { 2318 mask_k|=SSL_kEECDH; 2319 emask_k|=SSL_kEECDH; 2320 } 2321 #endif 2322 2323 #ifndef OPENSSL_NO_PSK 2324 mask_k |= SSL_kPSK; 2325 mask_a |= SSL_aPSK; 2326 emask_k |= SSL_kPSK; 2327 emask_a |= SSL_aPSK; 2328 #endif 2329 2330 c->mask_k=mask_k; 2331 c->mask_a=mask_a; 2332 c->export_mask_k=emask_k; 2333 c->export_mask_a=emask_a; 2334 c->valid=1; 2335 } 2336 2337 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2338 #define ku_reject(x, usage) \ 2339 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2340 2341 #ifndef OPENSSL_NO_EC 2342 2343 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2344 { 2345 unsigned long alg_k, alg_a; 2346 EVP_PKEY *pkey = NULL; 2347 int keysize = 0; 2348 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2349 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2350 2351 alg_k = cs->algorithm_mkey; 2352 alg_a = cs->algorithm_auth; 2353 2354 if (SSL_C_IS_EXPORT(cs)) 2355 { 2356 /* ECDH key length in export ciphers must be <= 163 bits */ 2357 pkey = X509_get_pubkey(x); 2358 if (pkey == NULL) return 0; 2359 keysize = EVP_PKEY_bits(pkey); 2360 EVP_PKEY_free(pkey); 2361 if (keysize > 163) return 0; 2362 } 2363 2364 /* This call populates the ex_flags field correctly */ 2365 X509_check_purpose(x, -1, 0); 2366 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2367 { 2368 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2369 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2370 } 2371 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2372 { 2373 /* key usage, if present, must allow key agreement */ 2374 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2375 { 2376 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2377 return 0; 2378 } 2379 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) 2380 { 2381 /* signature alg must be ECDSA */ 2382 if (pk_nid != NID_X9_62_id_ecPublicKey) 2383 { 2384 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2385 return 0; 2386 } 2387 } 2388 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) 2389 { 2390 /* signature alg must be RSA */ 2391 2392 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) 2393 { 2394 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2395 return 0; 2396 } 2397 } 2398 } 2399 if (alg_a & SSL_aECDSA) 2400 { 2401 /* key usage, if present, must allow signing */ 2402 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2403 { 2404 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2405 return 0; 2406 } 2407 } 2408 2409 return 1; /* all checks are ok */ 2410 } 2411 2412 #endif 2413 2414 /* THIS NEEDS CLEANING UP */ 2415 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2416 { 2417 unsigned long alg_k,alg_a; 2418 CERT *c; 2419 int i; 2420 2421 c=s->cert; 2422 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2423 2424 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2425 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2426 2427 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2428 { 2429 /* we don't need to look at SSL_kEECDH 2430 * since no certificate is needed for 2431 * anon ECDH and for authenticated 2432 * EECDH, the check for the auth 2433 * algorithm will set i correctly 2434 * NOTE: For ECDH-RSA, we need an ECC 2435 * not an RSA cert but for EECDH-RSA 2436 * we need an RSA cert. Placing the 2437 * checks for SSL_kECDH before RSA 2438 * checks ensures the correct cert is chosen. 2439 */ 2440 i=SSL_PKEY_ECC; 2441 } 2442 else if (alg_a & SSL_aECDSA) 2443 { 2444 i=SSL_PKEY_ECC; 2445 } 2446 else if (alg_k & SSL_kDHr) 2447 i=SSL_PKEY_DH_RSA; 2448 else if (alg_k & SSL_kDHd) 2449 i=SSL_PKEY_DH_DSA; 2450 else if (alg_a & SSL_aDSS) 2451 i=SSL_PKEY_DSA_SIGN; 2452 else if (alg_a & SSL_aRSA) 2453 { 2454 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2455 i=SSL_PKEY_RSA_SIGN; 2456 else 2457 i=SSL_PKEY_RSA_ENC; 2458 } 2459 else if (alg_a & SSL_aKRB5) 2460 { 2461 /* VRS something else here? */ 2462 return(NULL); 2463 } 2464 else if (alg_a & SSL_aGOST94) 2465 i=SSL_PKEY_GOST94; 2466 else if (alg_a & SSL_aGOST01) 2467 i=SSL_PKEY_GOST01; 2468 else /* if (alg_a & SSL_aNULL) */ 2469 { 2470 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR); 2471 return(NULL); 2472 } 2473 2474 return c->pkeys + i; 2475 } 2476 2477 X509 *ssl_get_server_send_cert(const SSL *s) 2478 { 2479 CERT_PKEY *cpk; 2480 cpk = ssl_get_server_send_pkey(s); 2481 if (!cpk) 2482 return NULL; 2483 return cpk->x509; 2484 } 2485 2486 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd) 2487 { 2488 unsigned long alg_a; 2489 CERT *c; 2490 2491 alg_a = cipher->algorithm_auth; 2492 c=s->cert; 2493 2494 /* SHA1 is the default for all signature algorithms up to TLS 1.2, 2495 * except RSA which is handled specially in s3_srvr.c */ 2496 if (pmd) 2497 *pmd = EVP_sha1(); 2498 2499 if ((alg_a & SSL_aDSS) && 2500 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2501 { 2502 if (pmd && s->s3 && s->s3->digest_dsa) 2503 *pmd = s->s3->digest_dsa; 2504 return c->pkeys[SSL_PKEY_DSA_SIGN].privatekey; 2505 } 2506 else if (alg_a & SSL_aRSA) 2507 { 2508 if (pmd && s->s3 && s->s3->digest_rsa) 2509 *pmd = s->s3->digest_rsa; 2510 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2511 return c->pkeys[SSL_PKEY_RSA_SIGN].privatekey; 2512 if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2513 return c->pkeys[SSL_PKEY_RSA_ENC].privatekey; 2514 } 2515 else if ((alg_a & SSL_aECDSA) && 2516 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2517 { 2518 if (pmd && s->s3 && s->s3->digest_ecdsa) 2519 *pmd = s->s3->digest_ecdsa; 2520 return c->pkeys[SSL_PKEY_ECC].privatekey; 2521 } 2522 2523 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2524 return(NULL); 2525 } 2526 2527 void ssl_update_cache(SSL *s,int mode) 2528 { 2529 int i; 2530 2531 /* If the session_id_length is 0, we are not supposed to cache it, 2532 * and it would be rather hard to do anyway :-) */ 2533 if (s->session->session_id_length == 0) return; 2534 2535 i=s->session_ctx->session_cache_mode; 2536 if ((i & mode) && (!s->hit) 2537 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2538 || SSL_CTX_add_session(s->session_ctx,s->session)) 2539 && (s->session_ctx->new_session_cb != NULL)) 2540 { 2541 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2542 if (!s->session_ctx->new_session_cb(s,s->session)) 2543 SSL_SESSION_free(s->session); 2544 } 2545 2546 /* auto flush every 255 connections */ 2547 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2548 ((i & mode) == mode)) 2549 { 2550 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2551 ?s->session_ctx->stats.sess_connect_good 2552 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2553 { 2554 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2555 } 2556 } 2557 } 2558 2559 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2560 { 2561 return(s->method); 2562 } 2563 2564 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2565 { 2566 int conn= -1; 2567 int ret=1; 2568 2569 if (s->method != meth) 2570 { 2571 if (s->handshake_func != NULL) 2572 conn=(s->handshake_func == s->method->ssl_connect); 2573 2574 if (s->method->version == meth->version) 2575 s->method=meth; 2576 else 2577 { 2578 s->method->ssl_free(s); 2579 s->method=meth; 2580 ret=s->method->ssl_new(s); 2581 } 2582 2583 if (conn == 1) 2584 s->handshake_func=meth->ssl_connect; 2585 else if (conn == 0) 2586 s->handshake_func=meth->ssl_accept; 2587 } 2588 return(ret); 2589 } 2590 2591 int SSL_get_error(const SSL *s,int i) 2592 { 2593 int reason; 2594 unsigned long l; 2595 BIO *bio; 2596 2597 if (i > 0) return(SSL_ERROR_NONE); 2598 2599 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2600 * etc, where we do encode the error */ 2601 if ((l=ERR_peek_error()) != 0) 2602 { 2603 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2604 return(SSL_ERROR_SYSCALL); 2605 else 2606 return(SSL_ERROR_SSL); 2607 } 2608 2609 if ((i < 0) && SSL_want_read(s)) 2610 { 2611 bio=SSL_get_rbio(s); 2612 if (BIO_should_read(bio)) 2613 return(SSL_ERROR_WANT_READ); 2614 else if (BIO_should_write(bio)) 2615 /* This one doesn't make too much sense ... We never try 2616 * to write to the rbio, and an application program where 2617 * rbio and wbio are separate couldn't even know what it 2618 * should wait for. 2619 * However if we ever set s->rwstate incorrectly 2620 * (so that we have SSL_want_read(s) instead of 2621 * SSL_want_write(s)) and rbio and wbio *are* the same, 2622 * this test works around that bug; so it might be safer 2623 * to keep it. */ 2624 return(SSL_ERROR_WANT_WRITE); 2625 else if (BIO_should_io_special(bio)) 2626 { 2627 reason=BIO_get_retry_reason(bio); 2628 if (reason == BIO_RR_CONNECT) 2629 return(SSL_ERROR_WANT_CONNECT); 2630 else if (reason == BIO_RR_ACCEPT) 2631 return(SSL_ERROR_WANT_ACCEPT); 2632 else 2633 return(SSL_ERROR_SYSCALL); /* unknown */ 2634 } 2635 } 2636 2637 if ((i < 0) && SSL_want_write(s)) 2638 { 2639 bio=SSL_get_wbio(s); 2640 if (BIO_should_write(bio)) 2641 return(SSL_ERROR_WANT_WRITE); 2642 else if (BIO_should_read(bio)) 2643 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2644 return(SSL_ERROR_WANT_READ); 2645 else if (BIO_should_io_special(bio)) 2646 { 2647 reason=BIO_get_retry_reason(bio); 2648 if (reason == BIO_RR_CONNECT) 2649 return(SSL_ERROR_WANT_CONNECT); 2650 else if (reason == BIO_RR_ACCEPT) 2651 return(SSL_ERROR_WANT_ACCEPT); 2652 else 2653 return(SSL_ERROR_SYSCALL); 2654 } 2655 } 2656 if ((i < 0) && SSL_want_x509_lookup(s)) 2657 { 2658 return(SSL_ERROR_WANT_X509_LOOKUP); 2659 } 2660 2661 if (i == 0) 2662 { 2663 if (s->version == SSL2_VERSION) 2664 { 2665 /* assume it is the socket being closed */ 2666 return(SSL_ERROR_ZERO_RETURN); 2667 } 2668 else 2669 { 2670 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2671 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2672 return(SSL_ERROR_ZERO_RETURN); 2673 } 2674 } 2675 return(SSL_ERROR_SYSCALL); 2676 } 2677 2678 int SSL_do_handshake(SSL *s) 2679 { 2680 int ret=1; 2681 2682 if (s->handshake_func == NULL) 2683 { 2684 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2685 return(-1); 2686 } 2687 2688 s->method->ssl_renegotiate_check(s); 2689 2690 if (SSL_in_init(s) || SSL_in_before(s)) 2691 { 2692 ret=s->handshake_func(s); 2693 } 2694 return(ret); 2695 } 2696 2697 /* For the next 2 functions, SSL_clear() sets shutdown and so 2698 * one of these calls will reset it */ 2699 void SSL_set_accept_state(SSL *s) 2700 { 2701 s->server=1; 2702 s->shutdown=0; 2703 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2704 s->handshake_func=s->method->ssl_accept; 2705 /* clear the current cipher */ 2706 ssl_clear_cipher_ctx(s); 2707 ssl_clear_hash_ctx(&s->read_hash); 2708 ssl_clear_hash_ctx(&s->write_hash); 2709 } 2710 2711 void SSL_set_connect_state(SSL *s) 2712 { 2713 s->server=0; 2714 s->shutdown=0; 2715 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2716 s->handshake_func=s->method->ssl_connect; 2717 /* clear the current cipher */ 2718 ssl_clear_cipher_ctx(s); 2719 ssl_clear_hash_ctx(&s->read_hash); 2720 ssl_clear_hash_ctx(&s->write_hash); 2721 } 2722 2723 int ssl_undefined_function(SSL *s) 2724 { 2725 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2726 return(0); 2727 } 2728 2729 int ssl_undefined_void_function(void) 2730 { 2731 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2732 return(0); 2733 } 2734 2735 int ssl_undefined_const_function(const SSL *s) 2736 { 2737 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2738 return(0); 2739 } 2740 2741 SSL_METHOD *ssl_bad_method(int ver) 2742 { 2743 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2744 return(NULL); 2745 } 2746 2747 static const char *ssl_get_version(int version) 2748 { 2749 if (version == TLS1_2_VERSION) 2750 return("TLSv1.2"); 2751 else if (version == TLS1_1_VERSION) 2752 return("TLSv1.1"); 2753 else if (version == TLS1_VERSION) 2754 return("TLSv1"); 2755 else if (version == SSL3_VERSION) 2756 return("SSLv3"); 2757 else if (version == SSL2_VERSION) 2758 return("SSLv2"); 2759 else 2760 return("unknown"); 2761 } 2762 2763 const char *SSL_get_version(const SSL *s) 2764 { 2765 return ssl_get_version(s->version); 2766 } 2767 2768 const char *SSL_SESSION_get_version(const SSL_SESSION *s) 2769 { 2770 return ssl_get_version(s->ssl_version); 2771 } 2772 2773 const char* SSL_authentication_method(const SSL* ssl) 2774 { 2775 if (ssl->cert != NULL && ssl->cert->rsa_tmp != NULL) 2776 return SSL_TXT_RSA "_" SSL_TXT_EXPORT; 2777 switch (ssl->version) 2778 { 2779 case SSL2_VERSION: 2780 return SSL_TXT_RSA; 2781 default: 2782 return SSL_CIPHER_authentication_method(ssl->s3->tmp.new_cipher); 2783 } 2784 } 2785 2786 SSL *SSL_dup(SSL *s) 2787 { 2788 STACK_OF(X509_NAME) *sk; 2789 X509_NAME *xn; 2790 SSL *ret; 2791 int i; 2792 2793 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2794 return(NULL); 2795 2796 ret->version = s->version; 2797 ret->type = s->type; 2798 ret->method = s->method; 2799 2800 if (s->session != NULL) 2801 { 2802 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2803 SSL_copy_session_id(ret,s); 2804 } 2805 else 2806 { 2807 /* No session has been established yet, so we have to expect 2808 * that s->cert or ret->cert will be changed later -- 2809 * they should not both point to the same object, 2810 * and thus we can't use SSL_copy_session_id. */ 2811 2812 ret->method->ssl_free(ret); 2813 ret->method = s->method; 2814 ret->method->ssl_new(ret); 2815 2816 if (s->cert != NULL) 2817 { 2818 if (ret->cert != NULL) 2819 { 2820 ssl_cert_free(ret->cert); 2821 } 2822 ret->cert = ssl_cert_dup(s->cert); 2823 if (ret->cert == NULL) 2824 goto err; 2825 } 2826 2827 SSL_set_session_id_context(ret, 2828 s->sid_ctx, s->sid_ctx_length); 2829 } 2830 2831 ret->options=s->options; 2832 ret->mode=s->mode; 2833 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2834 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2835 ret->msg_callback = s->msg_callback; 2836 ret->msg_callback_arg = s->msg_callback_arg; 2837 SSL_set_verify(ret,SSL_get_verify_mode(s), 2838 SSL_get_verify_callback(s)); 2839 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2840 ret->generate_session_id = s->generate_session_id; 2841 2842 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2843 2844 ret->debug=s->debug; 2845 2846 /* copy app data, a little dangerous perhaps */ 2847 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2848 goto err; 2849 2850 /* setup rbio, and wbio */ 2851 if (s->rbio != NULL) 2852 { 2853 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2854 goto err; 2855 } 2856 if (s->wbio != NULL) 2857 { 2858 if (s->wbio != s->rbio) 2859 { 2860 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2861 goto err; 2862 } 2863 else 2864 ret->wbio=ret->rbio; 2865 } 2866 ret->rwstate = s->rwstate; 2867 ret->in_handshake = s->in_handshake; 2868 ret->handshake_func = s->handshake_func; 2869 ret->server = s->server; 2870 ret->renegotiate = s->renegotiate; 2871 ret->new_session = s->new_session; 2872 ret->quiet_shutdown = s->quiet_shutdown; 2873 ret->shutdown=s->shutdown; 2874 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2875 ret->rstate=s->rstate; 2876 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2877 ret->hit=s->hit; 2878 2879 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2880 2881 /* dup the cipher_list and cipher_list_by_id stacks */ 2882 if (s->cipher_list != NULL) 2883 { 2884 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2885 goto err; 2886 } 2887 if (s->cipher_list_by_id != NULL) 2888 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2889 == NULL) 2890 goto err; 2891 2892 /* Dup the client_CA list */ 2893 if (s->client_CA != NULL) 2894 { 2895 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2896 ret->client_CA=sk; 2897 for (i=0; i<sk_X509_NAME_num(sk); i++) 2898 { 2899 xn=sk_X509_NAME_value(sk,i); 2900 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2901 { 2902 X509_NAME_free(xn); 2903 goto err; 2904 } 2905 } 2906 } 2907 2908 if (0) 2909 { 2910 err: 2911 if (ret != NULL) SSL_free(ret); 2912 ret=NULL; 2913 } 2914 return(ret); 2915 } 2916 2917 void ssl_clear_cipher_ctx(SSL *s) 2918 { 2919 if (s->enc_read_ctx != NULL) 2920 { 2921 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2922 OPENSSL_free(s->enc_read_ctx); 2923 s->enc_read_ctx=NULL; 2924 } 2925 if (s->enc_write_ctx != NULL) 2926 { 2927 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2928 OPENSSL_free(s->enc_write_ctx); 2929 s->enc_write_ctx=NULL; 2930 } 2931 #ifndef OPENSSL_NO_COMP 2932 if (s->expand != NULL) 2933 { 2934 COMP_CTX_free(s->expand); 2935 s->expand=NULL; 2936 } 2937 if (s->compress != NULL) 2938 { 2939 COMP_CTX_free(s->compress); 2940 s->compress=NULL; 2941 } 2942 #endif 2943 } 2944 2945 /* Fix this function so that it takes an optional type parameter */ 2946 X509 *SSL_get_certificate(const SSL *s) 2947 { 2948 if (s->server) 2949 return(ssl_get_server_send_cert(s)); 2950 else if (s->cert != NULL) 2951 return(s->cert->key->x509); 2952 else 2953 return(NULL); 2954 } 2955 2956 /* Fix this function so that it takes an optional type parameter */ 2957 EVP_PKEY *SSL_get_privatekey(SSL *s) 2958 { 2959 if (s->cert != NULL) 2960 return(s->cert->key->privatekey); 2961 else 2962 return(NULL); 2963 } 2964 2965 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2966 { 2967 if ((s->session != NULL) && (s->session->cipher != NULL)) 2968 return(s->session->cipher); 2969 return(NULL); 2970 } 2971 #ifdef OPENSSL_NO_COMP 2972 const void *SSL_get_current_compression(SSL *s) 2973 { 2974 return NULL; 2975 } 2976 const void *SSL_get_current_expansion(SSL *s) 2977 { 2978 return NULL; 2979 } 2980 #else 2981 2982 const COMP_METHOD *SSL_get_current_compression(SSL *s) 2983 { 2984 if (s->compress != NULL) 2985 return(s->compress->meth); 2986 return(NULL); 2987 } 2988 2989 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2990 { 2991 if (s->expand != NULL) 2992 return(s->expand->meth); 2993 return(NULL); 2994 } 2995 #endif 2996 2997 int ssl_init_wbio_buffer(SSL *s,int push) 2998 { 2999 BIO *bbio; 3000 3001 if (s->bbio == NULL) 3002 { 3003 bbio=BIO_new(BIO_f_buffer()); 3004 if (bbio == NULL) return(0); 3005 s->bbio=bbio; 3006 } 3007 else 3008 { 3009 bbio=s->bbio; 3010 if (s->bbio == s->wbio) 3011 s->wbio=BIO_pop(s->wbio); 3012 } 3013 (void)BIO_reset(bbio); 3014 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3015 if (!BIO_set_read_buffer_size(bbio,1)) 3016 { 3017 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 3018 return(0); 3019 } 3020 if (push) 3021 { 3022 if (s->wbio != bbio) 3023 s->wbio=BIO_push(bbio,s->wbio); 3024 } 3025 else 3026 { 3027 if (s->wbio == bbio) 3028 s->wbio=BIO_pop(bbio); 3029 } 3030 return(1); 3031 } 3032 3033 void ssl_free_wbio_buffer(SSL *s) 3034 { 3035 if (s->bbio == NULL) return; 3036 3037 if (s->bbio == s->wbio) 3038 { 3039 /* remove buffering */ 3040 s->wbio=BIO_pop(s->wbio); 3041 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 3042 assert(s->wbio != NULL); 3043 #endif 3044 } 3045 BIO_free(s->bbio); 3046 s->bbio=NULL; 3047 } 3048 3049 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 3050 { 3051 ctx->quiet_shutdown=mode; 3052 } 3053 3054 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3055 { 3056 return(ctx->quiet_shutdown); 3057 } 3058 3059 void SSL_set_quiet_shutdown(SSL *s,int mode) 3060 { 3061 s->quiet_shutdown=mode; 3062 } 3063 3064 int SSL_get_quiet_shutdown(const SSL *s) 3065 { 3066 return(s->quiet_shutdown); 3067 } 3068 3069 void SSL_set_shutdown(SSL *s,int mode) 3070 { 3071 s->shutdown=mode; 3072 } 3073 3074 int SSL_get_shutdown(const SSL *s) 3075 { 3076 return(s->shutdown); 3077 } 3078 3079 int SSL_version(const SSL *s) 3080 { 3081 return(s->version); 3082 } 3083 3084 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 3085 { 3086 return(ssl->ctx); 3087 } 3088 3089 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 3090 { 3091 if (ssl->ctx == ctx) 3092 return ssl->ctx; 3093 #ifndef OPENSSL_NO_TLSEXT 3094 if (ctx == NULL) 3095 ctx = ssl->initial_ctx; 3096 #endif 3097 if (ssl->cert != NULL) 3098 ssl_cert_free(ssl->cert); 3099 ssl->cert = ssl_cert_dup(ctx->cert); 3100 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 3101 if (ssl->ctx != NULL) 3102 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3103 ssl->ctx = ctx; 3104 return(ssl->ctx); 3105 } 3106 3107 #ifndef OPENSSL_NO_STDIO 3108 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3109 { 3110 return(X509_STORE_set_default_paths(ctx->cert_store)); 3111 } 3112 3113 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3114 const char *CApath) 3115 { 3116 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 3117 } 3118 #endif 3119 3120 void SSL_set_info_callback(SSL *ssl, 3121 void (*cb)(const SSL *ssl,int type,int val)) 3122 { 3123 ssl->info_callback=cb; 3124 } 3125 3126 /* One compiler (Diab DCC) doesn't like argument names in returned 3127 function pointer. */ 3128 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 3129 { 3130 return ssl->info_callback; 3131 } 3132 3133 int SSL_state(const SSL *ssl) 3134 { 3135 return(ssl->state); 3136 } 3137 3138 void SSL_set_state(SSL *ssl, int state) 3139 { 3140 ssl->state = state; 3141 } 3142 3143 void SSL_set_verify_result(SSL *ssl,long arg) 3144 { 3145 ssl->verify_result=arg; 3146 } 3147 3148 long SSL_get_verify_result(const SSL *ssl) 3149 { 3150 return(ssl->verify_result); 3151 } 3152 3153 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3154 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3155 { 3156 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3157 new_func, dup_func, free_func); 3158 } 3159 3160 int SSL_set_ex_data(SSL *s,int idx,void *arg) 3161 { 3162 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3163 } 3164 3165 void *SSL_get_ex_data(const SSL *s,int idx) 3166 { 3167 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3168 } 3169 3170 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3171 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3172 { 3173 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3174 new_func, dup_func, free_func); 3175 } 3176 3177 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 3178 { 3179 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3180 } 3181 3182 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 3183 { 3184 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3185 } 3186 3187 int ssl_ok(SSL *s) 3188 { 3189 return(1); 3190 } 3191 3192 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3193 { 3194 return(ctx->cert_store); 3195 } 3196 3197 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 3198 { 3199 if (ctx->cert_store != NULL) 3200 X509_STORE_free(ctx->cert_store); 3201 ctx->cert_store=store; 3202 } 3203 3204 int SSL_want(const SSL *s) 3205 { 3206 return(s->rwstate); 3207 } 3208 3209 /*! 3210 * \brief Set the callback for generating temporary RSA keys. 3211 * \param ctx the SSL context. 3212 * \param cb the callback 3213 */ 3214 3215 #ifndef OPENSSL_NO_RSA 3216 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 3217 int is_export, 3218 int keylength)) 3219 { 3220 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3221 } 3222 3223 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 3224 int is_export, 3225 int keylength)) 3226 { 3227 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3228 } 3229 #endif 3230 3231 #ifdef DOXYGEN 3232 /*! 3233 * \brief The RSA temporary key callback function. 3234 * \param ssl the SSL session. 3235 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3236 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3237 * of the required key in bits. 3238 * \return the temporary RSA key. 3239 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3240 */ 3241 3242 RSA *cb(SSL *ssl,int is_export,int keylength) 3243 {} 3244 #endif 3245 3246 /*! 3247 * \brief Set the callback for generating temporary DH keys. 3248 * \param ctx the SSL context. 3249 * \param dh the callback 3250 */ 3251 3252 #ifndef OPENSSL_NO_DH 3253 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 3254 int keylength)) 3255 { 3256 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3257 } 3258 3259 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 3260 int keylength)) 3261 { 3262 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3263 } 3264 #endif 3265 3266 #ifndef OPENSSL_NO_ECDH 3267 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3268 int keylength)) 3269 { 3270 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3271 } 3272 3273 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3274 int keylength)) 3275 { 3276 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3277 } 3278 #endif 3279 3280 #ifndef OPENSSL_NO_PSK 3281 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3282 { 3283 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3284 { 3285 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3286 return 0; 3287 } 3288 if (ctx->psk_identity_hint != NULL) 3289 OPENSSL_free(ctx->psk_identity_hint); 3290 if (identity_hint != NULL) 3291 { 3292 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3293 if (ctx->psk_identity_hint == NULL) 3294 return 0; 3295 } 3296 else 3297 ctx->psk_identity_hint = NULL; 3298 return 1; 3299 } 3300 3301 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3302 { 3303 if (s == NULL) 3304 return 0; 3305 3306 if (s->session == NULL) 3307 return 1; /* session not created yet, ignored */ 3308 3309 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3310 { 3311 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3312 return 0; 3313 } 3314 if (s->session->psk_identity_hint != NULL) 3315 OPENSSL_free(s->session->psk_identity_hint); 3316 if (identity_hint != NULL) 3317 { 3318 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3319 if (s->session->psk_identity_hint == NULL) 3320 return 0; 3321 } 3322 else 3323 s->session->psk_identity_hint = NULL; 3324 return 1; 3325 } 3326 3327 const char *SSL_get_psk_identity_hint(const SSL *s) 3328 { 3329 if (s == NULL || s->session == NULL) 3330 return NULL; 3331 return(s->session->psk_identity_hint); 3332 } 3333 3334 const char *SSL_get_psk_identity(const SSL *s) 3335 { 3336 if (s == NULL || s->session == NULL) 3337 return NULL; 3338 return(s->session->psk_identity); 3339 } 3340 3341 void SSL_set_psk_client_callback(SSL *s, 3342 unsigned int (*cb)(SSL *ssl, const char *hint, 3343 char *identity, unsigned int max_identity_len, unsigned char *psk, 3344 unsigned int max_psk_len)) 3345 { 3346 s->psk_client_callback = cb; 3347 } 3348 3349 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3350 unsigned int (*cb)(SSL *ssl, const char *hint, 3351 char *identity, unsigned int max_identity_len, unsigned char *psk, 3352 unsigned int max_psk_len)) 3353 { 3354 ctx->psk_client_callback = cb; 3355 } 3356 3357 void SSL_set_psk_server_callback(SSL *s, 3358 unsigned int (*cb)(SSL *ssl, const char *identity, 3359 unsigned char *psk, unsigned int max_psk_len)) 3360 { 3361 s->psk_server_callback = cb; 3362 } 3363 3364 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3365 unsigned int (*cb)(SSL *ssl, const char *identity, 3366 unsigned char *psk, unsigned int max_psk_len)) 3367 { 3368 ctx->psk_server_callback = cb; 3369 } 3370 #endif 3371 3372 void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3373 { 3374 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3375 } 3376 void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3377 { 3378 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3379 } 3380 3381 int SSL_cutthrough_complete(const SSL *s) 3382 { 3383 return (!s->server && /* cutthrough only applies to clients */ 3384 !s->hit && /* full-handshake */ 3385 s->version >= SSL3_VERSION && 3386 s->s3->in_read_app_data == 0 && /* cutthrough only applies to write() */ 3387 (SSL_get_mode((SSL*)s) & SSL_MODE_HANDSHAKE_CUTTHROUGH) && /* cutthrough enabled */ 3388 SSL_get_cipher_bits(s, NULL) >= 128 && /* strong cipher choosen */ 3389 s->s3->previous_server_finished_len == 0 && /* not a renegotiation handshake */ 3390 (s->state == SSL3_ST_CR_SESSION_TICKET_A || /* ready to write app-data*/ 3391 s->state == SSL3_ST_CR_FINISHED_A)); 3392 } 3393 3394 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3395 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3396 * any. If EVP_MD pointer is passed, initializes ctx with this md 3397 * Returns newly allocated ctx; 3398 */ 3399 3400 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3401 { 3402 ssl_clear_hash_ctx(hash); 3403 *hash = EVP_MD_CTX_create(); 3404 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3405 return *hash; 3406 } 3407 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3408 { 3409 3410 if (*hash) EVP_MD_CTX_destroy(*hash); 3411 *hash=NULL; 3412 } 3413 3414 void SSL_set_debug(SSL *s, int debug) 3415 { 3416 s->debug = debug; 3417 } 3418 3419 int SSL_cache_hit(SSL *s) 3420 { 3421 return s->hit; 3422 } 3423 3424 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3425 #include "../crypto/bio/bss_file.c" 3426 #endif 3427 3428 IMPLEMENT_STACK_OF(SSL_CIPHER) 3429 IMPLEMENT_STACK_OF(SSL_COMP) 3430 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3431 ssl_cipher_id); 3432
