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_identity_hint = NULL; 392 if (ctx->psk_identity_hint) 393 { 394 s->psk_identity_hint = BUF_strdup(ctx->psk_identity_hint); 395 if (s->psk_identity_hint == NULL) 396 goto err; 397 } 398 s->psk_client_callback=ctx->psk_client_callback; 399 s->psk_server_callback=ctx->psk_server_callback; 400 #endif 401 402 return(s); 403 err: 404 if (s != NULL) 405 { 406 if (s->cert != NULL) 407 ssl_cert_free(s->cert); 408 if (s->ctx != NULL) 409 SSL_CTX_free(s->ctx); /* decrement reference count */ 410 OPENSSL_free(s); 411 } 412 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE); 413 return(NULL); 414 } 415 416 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx, 417 unsigned int sid_ctx_len) 418 { 419 if(sid_ctx_len > sizeof ctx->sid_ctx) 420 { 421 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 422 return 0; 423 } 424 ctx->sid_ctx_length=sid_ctx_len; 425 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len); 426 427 return 1; 428 } 429 430 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx, 431 unsigned int sid_ctx_len) 432 { 433 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 434 { 435 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 436 return 0; 437 } 438 ssl->sid_ctx_length=sid_ctx_len; 439 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len); 440 441 return 1; 442 } 443 444 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 445 { 446 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 447 ctx->generate_session_id = cb; 448 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 449 return 1; 450 } 451 452 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 453 { 454 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 455 ssl->generate_session_id = cb; 456 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 457 return 1; 458 } 459 460 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 461 unsigned int id_len) 462 { 463 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 464 * we can "construct" a session to give us the desired check - ie. to 465 * find if there's a session in the hash table that would conflict with 466 * any new session built out of this id/id_len and the ssl_version in 467 * use by this SSL. */ 468 SSL_SESSION r, *p; 469 470 if(id_len > sizeof r.session_id) 471 return 0; 472 473 r.ssl_version = ssl->version; 474 r.session_id_length = id_len; 475 memcpy(r.session_id, id, id_len); 476 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 477 * callback is calling us to check the uniqueness of a shorter ID, it 478 * must be compared as a padded-out ID because that is what it will be 479 * converted to when the callback has finished choosing it. */ 480 if((r.ssl_version == SSL2_VERSION) && 481 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) 482 { 483 memset(r.session_id + id_len, 0, 484 SSL2_SSL_SESSION_ID_LENGTH - id_len); 485 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 486 } 487 488 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 489 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 490 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 491 return (p != NULL); 492 } 493 494 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 495 { 496 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 497 } 498 499 int SSL_set_purpose(SSL *s, int purpose) 500 { 501 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 502 } 503 504 int SSL_CTX_set_trust(SSL_CTX *s, int trust) 505 { 506 return X509_VERIFY_PARAM_set_trust(s->param, trust); 507 } 508 509 int SSL_set_trust(SSL *s, int trust) 510 { 511 return X509_VERIFY_PARAM_set_trust(s->param, trust); 512 } 513 514 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 515 { 516 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 517 } 518 519 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 520 { 521 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 522 } 523 524 void SSL_free(SSL *s) 525 { 526 int i; 527 528 if(s == NULL) 529 return; 530 531 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL); 532 #ifdef REF_PRINT 533 REF_PRINT("SSL",s); 534 #endif 535 if (i > 0) return; 536 #ifdef REF_CHECK 537 if (i < 0) 538 { 539 fprintf(stderr,"SSL_free, bad reference count\n"); 540 abort(); /* ok */ 541 } 542 #endif 543 544 if (s->param) 545 X509_VERIFY_PARAM_free(s->param); 546 547 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 548 549 if (s->bbio != NULL) 550 { 551 /* If the buffering BIO is in place, pop it off */ 552 if (s->bbio == s->wbio) 553 { 554 s->wbio=BIO_pop(s->wbio); 555 } 556 BIO_free(s->bbio); 557 s->bbio=NULL; 558 } 559 if (s->rbio != NULL) 560 BIO_free_all(s->rbio); 561 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 562 BIO_free_all(s->wbio); 563 564 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf); 565 566 /* add extra stuff */ 567 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list); 568 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id); 569 570 /* Make the next call work :-) */ 571 if (s->session != NULL) 572 { 573 ssl_clear_bad_session(s); 574 SSL_SESSION_free(s->session); 575 } 576 577 ssl_clear_cipher_ctx(s); 578 ssl_clear_hash_ctx(&s->read_hash); 579 ssl_clear_hash_ctx(&s->write_hash); 580 581 if (s->cert != NULL) ssl_cert_free(s->cert); 582 /* Free up if allocated */ 583 584 #ifndef OPENSSL_NO_TLSEXT 585 if (s->tlsext_hostname) 586 OPENSSL_free(s->tlsext_hostname); 587 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx); 588 #ifndef OPENSSL_NO_EC 589 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist); 590 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist); 591 #endif /* OPENSSL_NO_EC */ 592 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input); 593 if (s->tlsext_ocsp_exts) 594 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 595 X509_EXTENSION_free); 596 if (s->tlsext_ocsp_ids) 597 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 598 if (s->tlsext_ocsp_resp) 599 OPENSSL_free(s->tlsext_ocsp_resp); 600 if (s->tlsext_channel_id_private) 601 EVP_PKEY_free(s->tlsext_channel_id_private); 602 if (s->alpn_client_proto_list) 603 OPENSSL_free(s->alpn_client_proto_list); 604 #endif 605 606 #ifndef OPENSSL_NO_PSK 607 if (s->psk_identity_hint) 608 OPENSSL_free(s->psk_identity_hint); 609 #endif 610 611 if (s->client_CA != NULL) 612 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free); 613 614 if (s->method != NULL) s->method->ssl_free(s); 615 616 if (s->ctx) SSL_CTX_free(s->ctx); 617 618 #ifndef OPENSSL_NO_KRB5 619 if (s->kssl_ctx != NULL) 620 kssl_ctx_free(s->kssl_ctx); 621 #endif /* OPENSSL_NO_KRB5 */ 622 623 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 624 if (s->next_proto_negotiated) 625 OPENSSL_free(s->next_proto_negotiated); 626 #endif 627 628 #ifndef OPENSSL_NO_SRTP 629 if (s->srtp_profiles) 630 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 631 #endif 632 633 OPENSSL_free(s); 634 } 635 636 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 637 { 638 /* If the output buffering BIO is still in place, remove it 639 */ 640 if (s->bbio != NULL) 641 { 642 if (s->wbio == s->bbio) 643 { 644 s->wbio=s->wbio->next_bio; 645 s->bbio->next_bio=NULL; 646 } 647 } 648 if ((s->rbio != NULL) && (s->rbio != rbio)) 649 BIO_free_all(s->rbio); 650 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 651 BIO_free_all(s->wbio); 652 s->rbio=rbio; 653 s->wbio=wbio; 654 } 655 656 BIO *SSL_get_rbio(const SSL *s) 657 { return(s->rbio); } 658 659 BIO *SSL_get_wbio(const SSL *s) 660 { return(s->wbio); } 661 662 int SSL_get_fd(const SSL *s) 663 { 664 return(SSL_get_rfd(s)); 665 } 666 667 int SSL_get_rfd(const SSL *s) 668 { 669 int ret= -1; 670 BIO *b,*r; 671 672 b=SSL_get_rbio(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 int SSL_get_wfd(const SSL *s) 680 { 681 int ret= -1; 682 BIO *b,*r; 683 684 b=SSL_get_wbio(s); 685 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 686 if (r != NULL) 687 BIO_get_fd(r,&ret); 688 return(ret); 689 } 690 691 #ifndef OPENSSL_NO_SOCK 692 int SSL_set_fd(SSL *s,int fd) 693 { 694 int ret=0; 695 BIO *bio=NULL; 696 697 bio=BIO_new(BIO_s_socket()); 698 699 if (bio == NULL) 700 { 701 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 702 goto err; 703 } 704 BIO_set_fd(bio,fd,BIO_NOCLOSE); 705 SSL_set_bio(s,bio,bio); 706 ret=1; 707 err: 708 return(ret); 709 } 710 711 int SSL_set_wfd(SSL *s,int fd) 712 { 713 int ret=0; 714 BIO *bio=NULL; 715 716 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 717 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 718 { 719 bio=BIO_new(BIO_s_socket()); 720 721 if (bio == NULL) 722 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 723 BIO_set_fd(bio,fd,BIO_NOCLOSE); 724 SSL_set_bio(s,SSL_get_rbio(s),bio); 725 } 726 else 727 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 728 ret=1; 729 err: 730 return(ret); 731 } 732 733 int SSL_set_rfd(SSL *s,int fd) 734 { 735 int ret=0; 736 BIO *bio=NULL; 737 738 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 739 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 740 { 741 bio=BIO_new(BIO_s_socket()); 742 743 if (bio == NULL) 744 { 745 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 746 goto err; 747 } 748 BIO_set_fd(bio,fd,BIO_NOCLOSE); 749 SSL_set_bio(s,bio,SSL_get_wbio(s)); 750 } 751 else 752 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 753 ret=1; 754 err: 755 return(ret); 756 } 757 #endif 758 759 760 /* return length of latest Finished message we sent, copy to 'buf' */ 761 size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 762 { 763 size_t ret = 0; 764 765 if (s->s3 != NULL) 766 { 767 ret = s->s3->tmp.finish_md_len; 768 if (count > ret) 769 count = ret; 770 memcpy(buf, s->s3->tmp.finish_md, count); 771 } 772 return ret; 773 } 774 775 /* return length of latest Finished message we expected, copy to 'buf' */ 776 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 777 { 778 size_t ret = 0; 779 780 if (s->s3 != NULL) 781 { 782 ret = s->s3->tmp.peer_finish_md_len; 783 if (count > ret) 784 count = ret; 785 memcpy(buf, s->s3->tmp.peer_finish_md, count); 786 } 787 return ret; 788 } 789 790 791 int SSL_get_verify_mode(const SSL *s) 792 { 793 return(s->verify_mode); 794 } 795 796 int SSL_get_verify_depth(const SSL *s) 797 { 798 return X509_VERIFY_PARAM_get_depth(s->param); 799 } 800 801 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *) 802 { 803 return(s->verify_callback); 804 } 805 806 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 807 { 808 return(ctx->verify_mode); 809 } 810 811 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 812 { 813 return X509_VERIFY_PARAM_get_depth(ctx->param); 814 } 815 816 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *) 817 { 818 return(ctx->default_verify_callback); 819 } 820 821 void SSL_set_verify(SSL *s,int mode, 822 int (*callback)(int ok,X509_STORE_CTX *ctx)) 823 { 824 s->verify_mode=mode; 825 if (callback != NULL) 826 s->verify_callback=callback; 827 } 828 829 void SSL_set_verify_depth(SSL *s,int depth) 830 { 831 X509_VERIFY_PARAM_set_depth(s->param, depth); 832 } 833 834 void SSL_set_read_ahead(SSL *s,int yes) 835 { 836 s->read_ahead=yes; 837 } 838 839 int SSL_get_read_ahead(const SSL *s) 840 { 841 return(s->read_ahead); 842 } 843 844 int SSL_pending(const SSL *s) 845 { 846 /* SSL_pending cannot work properly if read-ahead is enabled 847 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 848 * and it is impossible to fix since SSL_pending cannot report 849 * errors that may be observed while scanning the new data. 850 * (Note that SSL_pending() is often used as a boolean value, 851 * so we'd better not return -1.) 852 */ 853 return(s->method->ssl_pending(s)); 854 } 855 856 X509 *SSL_get_peer_certificate(const SSL *s) 857 { 858 X509 *r; 859 860 if ((s == NULL) || (s->session == NULL)) 861 r=NULL; 862 else 863 r=s->session->peer; 864 865 if (r == NULL) return(r); 866 867 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 868 869 return(r); 870 } 871 872 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 873 { 874 STACK_OF(X509) *r; 875 876 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 877 r=NULL; 878 else 879 r=s->session->sess_cert->cert_chain; 880 881 /* If we are a client, cert_chain includes the peer's own 882 * certificate; if we are a server, it does not. */ 883 884 return(r); 885 } 886 887 /* Now in theory, since the calling process own 't' it should be safe to 888 * modify. We need to be able to read f without being hassled */ 889 void SSL_copy_session_id(SSL *t,const SSL *f) 890 { 891 CERT *tmp; 892 893 /* Do we need to to SSL locking? */ 894 SSL_set_session(t,SSL_get_session(f)); 895 896 /* what if we are setup as SSLv2 but want to talk SSLv3 or 897 * vice-versa */ 898 if (t->method != f->method) 899 { 900 t->method->ssl_free(t); /* cleanup current */ 901 t->method=f->method; /* change method */ 902 t->method->ssl_new(t); /* setup new */ 903 } 904 905 tmp=t->cert; 906 if (f->cert != NULL) 907 { 908 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 909 t->cert=f->cert; 910 } 911 else 912 t->cert=NULL; 913 if (tmp != NULL) ssl_cert_free(tmp); 914 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 915 } 916 917 /* Fix this so it checks all the valid key/cert options */ 918 int SSL_CTX_check_private_key(const SSL_CTX *ctx) 919 { 920 if ( (ctx == NULL) || 921 (ctx->cert == NULL) || 922 (ctx->cert->key->x509 == NULL)) 923 { 924 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 925 return(0); 926 } 927 if (ctx->cert->key->privatekey == NULL) 928 { 929 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 930 return(0); 931 } 932 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 933 } 934 935 /* Fix this function so that it takes an optional type parameter */ 936 int SSL_check_private_key(const SSL *ssl) 937 { 938 if (ssl == NULL) 939 { 940 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 941 return(0); 942 } 943 if (ssl->cert == NULL) 944 { 945 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 946 return 0; 947 } 948 if (ssl->cert->key->x509 == NULL) 949 { 950 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 951 return(0); 952 } 953 if (ssl->cert->key->privatekey == NULL) 954 { 955 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 956 return(0); 957 } 958 return(X509_check_private_key(ssl->cert->key->x509, 959 ssl->cert->key->privatekey)); 960 } 961 962 int SSL_accept(SSL *s) 963 { 964 if (s->handshake_func == 0) 965 /* Not properly initialized yet */ 966 SSL_set_accept_state(s); 967 968 return(s->method->ssl_accept(s)); 969 } 970 971 int SSL_connect(SSL *s) 972 { 973 if (s->handshake_func == 0) 974 /* Not properly initialized yet */ 975 SSL_set_connect_state(s); 976 977 return(s->method->ssl_connect(s)); 978 } 979 980 long SSL_get_default_timeout(const SSL *s) 981 { 982 return(s->method->get_timeout()); 983 } 984 985 int SSL_read(SSL *s,void *buf,int num) 986 { 987 if (s->handshake_func == 0) 988 { 989 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 990 return -1; 991 } 992 993 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 994 { 995 s->rwstate=SSL_NOTHING; 996 return(0); 997 } 998 return(s->method->ssl_read(s,buf,num)); 999 } 1000 1001 int SSL_peek(SSL *s,void *buf,int num) 1002 { 1003 if (s->handshake_func == 0) 1004 { 1005 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 1006 return -1; 1007 } 1008 1009 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 1010 { 1011 return(0); 1012 } 1013 return(s->method->ssl_peek(s,buf,num)); 1014 } 1015 1016 int SSL_write(SSL *s,const void *buf,int num) 1017 { 1018 if (s->handshake_func == 0) 1019 { 1020 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 1021 return -1; 1022 } 1023 1024 if (s->shutdown & SSL_SENT_SHUTDOWN) 1025 { 1026 s->rwstate=SSL_NOTHING; 1027 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 1028 return(-1); 1029 } 1030 return(s->method->ssl_write(s,buf,num)); 1031 } 1032 1033 int SSL_shutdown(SSL *s) 1034 { 1035 /* Note that this function behaves differently from what one might 1036 * expect. Return values are 0 for no success (yet), 1037 * 1 for success; but calling it once is usually not enough, 1038 * even if blocking I/O is used (see ssl3_shutdown). 1039 */ 1040 1041 if (s->handshake_func == 0) 1042 { 1043 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1044 return -1; 1045 } 1046 1047 if ((s != NULL) && !SSL_in_init(s)) 1048 return(s->method->ssl_shutdown(s)); 1049 else 1050 return(1); 1051 } 1052 1053 int SSL_renegotiate(SSL *s) 1054 { 1055 if (s->renegotiate == 0) 1056 s->renegotiate=1; 1057 1058 s->new_session=1; 1059 1060 return(s->method->ssl_renegotiate(s)); 1061 } 1062 1063 int SSL_renegotiate_abbreviated(SSL *s) 1064 { 1065 if (s->renegotiate == 0) 1066 s->renegotiate=1; 1067 1068 s->new_session=0; 1069 1070 return(s->method->ssl_renegotiate(s)); 1071 } 1072 1073 int SSL_renegotiate_pending(SSL *s) 1074 { 1075 /* becomes true when negotiation is requested; 1076 * false again once a handshake has finished */ 1077 return (s->renegotiate != 0); 1078 } 1079 1080 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 1081 { 1082 long l; 1083 1084 switch (cmd) 1085 { 1086 case SSL_CTRL_GET_READ_AHEAD: 1087 return(s->read_ahead); 1088 case SSL_CTRL_SET_READ_AHEAD: 1089 l=s->read_ahead; 1090 s->read_ahead=larg; 1091 return(l); 1092 1093 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1094 s->msg_callback_arg = parg; 1095 return 1; 1096 1097 case SSL_CTRL_OPTIONS: 1098 return(s->options|=larg); 1099 case SSL_CTRL_CLEAR_OPTIONS: 1100 return(s->options&=~larg); 1101 case SSL_CTRL_MODE: 1102 return(s->mode|=larg); 1103 case SSL_CTRL_CLEAR_MODE: 1104 return(s->mode &=~larg); 1105 case SSL_CTRL_GET_MAX_CERT_LIST: 1106 return(s->max_cert_list); 1107 case SSL_CTRL_SET_MAX_CERT_LIST: 1108 l=s->max_cert_list; 1109 s->max_cert_list=larg; 1110 return(l); 1111 case SSL_CTRL_SET_MTU: 1112 #ifndef OPENSSL_NO_DTLS1 1113 if (larg < (long)dtls1_min_mtu()) 1114 return 0; 1115 #endif 1116 1117 if (SSL_version(s) == DTLS1_VERSION || 1118 SSL_version(s) == DTLS1_BAD_VER) 1119 { 1120 s->d1->mtu = larg; 1121 return larg; 1122 } 1123 return 0; 1124 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1125 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1126 return 0; 1127 s->max_send_fragment = larg; 1128 return 1; 1129 case SSL_CTRL_GET_RI_SUPPORT: 1130 if (s->s3) 1131 return s->s3->send_connection_binding; 1132 else return 0; 1133 default: 1134 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 1135 } 1136 } 1137 1138 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1139 { 1140 switch(cmd) 1141 { 1142 case SSL_CTRL_SET_MSG_CALLBACK: 1143 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1144 return 1; 1145 1146 default: 1147 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 1148 } 1149 } 1150 1151 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1152 { 1153 return ctx->sessions; 1154 } 1155 1156 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 1157 { 1158 long l; 1159 1160 switch (cmd) 1161 { 1162 case SSL_CTRL_GET_READ_AHEAD: 1163 return(ctx->read_ahead); 1164 case SSL_CTRL_SET_READ_AHEAD: 1165 l=ctx->read_ahead; 1166 ctx->read_ahead=larg; 1167 return(l); 1168 1169 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1170 ctx->msg_callback_arg = parg; 1171 return 1; 1172 1173 case SSL_CTRL_GET_MAX_CERT_LIST: 1174 return(ctx->max_cert_list); 1175 case SSL_CTRL_SET_MAX_CERT_LIST: 1176 l=ctx->max_cert_list; 1177 ctx->max_cert_list=larg; 1178 return(l); 1179 1180 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1181 l=ctx->session_cache_size; 1182 ctx->session_cache_size=larg; 1183 return(l); 1184 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1185 return(ctx->session_cache_size); 1186 case SSL_CTRL_SET_SESS_CACHE_MODE: 1187 l=ctx->session_cache_mode; 1188 ctx->session_cache_mode=larg; 1189 return(l); 1190 case SSL_CTRL_GET_SESS_CACHE_MODE: 1191 return(ctx->session_cache_mode); 1192 1193 case SSL_CTRL_SESS_NUMBER: 1194 return(lh_SSL_SESSION_num_items(ctx->sessions)); 1195 case SSL_CTRL_SESS_CONNECT: 1196 return(ctx->stats.sess_connect); 1197 case SSL_CTRL_SESS_CONNECT_GOOD: 1198 return(ctx->stats.sess_connect_good); 1199 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1200 return(ctx->stats.sess_connect_renegotiate); 1201 case SSL_CTRL_SESS_ACCEPT: 1202 return(ctx->stats.sess_accept); 1203 case SSL_CTRL_SESS_ACCEPT_GOOD: 1204 return(ctx->stats.sess_accept_good); 1205 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1206 return(ctx->stats.sess_accept_renegotiate); 1207 case SSL_CTRL_SESS_HIT: 1208 return(ctx->stats.sess_hit); 1209 case SSL_CTRL_SESS_CB_HIT: 1210 return(ctx->stats.sess_cb_hit); 1211 case SSL_CTRL_SESS_MISSES: 1212 return(ctx->stats.sess_miss); 1213 case SSL_CTRL_SESS_TIMEOUTS: 1214 return(ctx->stats.sess_timeout); 1215 case SSL_CTRL_SESS_CACHE_FULL: 1216 return(ctx->stats.sess_cache_full); 1217 case SSL_CTRL_OPTIONS: 1218 return(ctx->options|=larg); 1219 case SSL_CTRL_CLEAR_OPTIONS: 1220 return(ctx->options&=~larg); 1221 case SSL_CTRL_MODE: 1222 return(ctx->mode|=larg); 1223 case SSL_CTRL_CLEAR_MODE: 1224 return(ctx->mode&=~larg); 1225 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1226 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1227 return 0; 1228 ctx->max_send_fragment = larg; 1229 return 1; 1230 default: 1231 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1232 } 1233 } 1234 1235 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1236 { 1237 switch(cmd) 1238 { 1239 case SSL_CTRL_SET_MSG_CALLBACK: 1240 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1241 return 1; 1242 1243 default: 1244 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1245 } 1246 } 1247 1248 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1249 { 1250 long l; 1251 1252 l=a->id-b->id; 1253 if (l == 0L) 1254 return(0); 1255 else 1256 return((l > 0)?1:-1); 1257 } 1258 1259 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1260 const SSL_CIPHER * const *bp) 1261 { 1262 long l; 1263 1264 l=(*ap)->id-(*bp)->id; 1265 if (l == 0L) 1266 return(0); 1267 else 1268 return((l > 0)?1:-1); 1269 } 1270 1271 /** return a STACK of the ciphers available for the SSL and in order of 1272 * preference */ 1273 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1274 { 1275 if (s != NULL) 1276 { 1277 if (s->cipher_list != NULL) 1278 { 1279 return(s->cipher_list); 1280 } 1281 else if ((s->ctx != NULL) && 1282 (s->ctx->cipher_list != NULL)) 1283 { 1284 return(s->ctx->cipher_list); 1285 } 1286 } 1287 return(NULL); 1288 } 1289 1290 /** return a STACK of the ciphers available for the SSL and in order of 1291 * algorithm id */ 1292 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1293 { 1294 if (s != NULL) 1295 { 1296 if (s->cipher_list_by_id != NULL) 1297 { 1298 return(s->cipher_list_by_id); 1299 } 1300 else if ((s->ctx != NULL) && 1301 (s->ctx->cipher_list_by_id != NULL)) 1302 { 1303 return(s->ctx->cipher_list_by_id); 1304 } 1305 } 1306 return(NULL); 1307 } 1308 1309 /** The old interface to get the same thing as SSL_get_ciphers() */ 1310 const char *SSL_get_cipher_list(const SSL *s,int n) 1311 { 1312 SSL_CIPHER *c; 1313 STACK_OF(SSL_CIPHER) *sk; 1314 1315 if (s == NULL) return(NULL); 1316 sk=SSL_get_ciphers(s); 1317 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1318 return(NULL); 1319 c=sk_SSL_CIPHER_value(sk,n); 1320 if (c == NULL) return(NULL); 1321 return(c->name); 1322 } 1323 1324 /** specify the ciphers to be used by default by the SSL_CTX */ 1325 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1326 { 1327 STACK_OF(SSL_CIPHER) *sk; 1328 1329 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1330 &ctx->cipher_list_by_id,str); 1331 /* ssl_create_cipher_list may return an empty stack if it 1332 * was unable to find a cipher matching the given rule string 1333 * (for example if the rule string specifies a cipher which 1334 * has been disabled). This is not an error as far as 1335 * ssl_create_cipher_list is concerned, and hence 1336 * ctx->cipher_list and ctx->cipher_list_by_id has been 1337 * updated. */ 1338 if (sk == NULL) 1339 return 0; 1340 else if (sk_SSL_CIPHER_num(sk) == 0) 1341 { 1342 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1343 return 0; 1344 } 1345 return 1; 1346 } 1347 1348 /** specify the ciphers to be used by the SSL */ 1349 int SSL_set_cipher_list(SSL *s,const char *str) 1350 { 1351 STACK_OF(SSL_CIPHER) *sk; 1352 1353 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1354 &s->cipher_list_by_id,str); 1355 /* see comment in SSL_CTX_set_cipher_list */ 1356 if (sk == NULL) 1357 return 0; 1358 else if (sk_SSL_CIPHER_num(sk) == 0) 1359 { 1360 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1361 return 0; 1362 } 1363 return 1; 1364 } 1365 1366 /** specify the ciphers to be used by the SSL */ 1367 int SSL_set_cipher_lists(SSL *s,STACK_OF(SSL_CIPHER) *sk) 1368 { 1369 STACK_OF(SSL_CIPHER) *tmp_cipher_list; 1370 1371 if (sk == NULL) 1372 return 0; 1373 1374 /* Based on end of ssl_create_cipher_list */ 1375 tmp_cipher_list = sk_SSL_CIPHER_dup(sk); 1376 if (tmp_cipher_list == NULL) 1377 { 1378 return 0; 1379 } 1380 if (s->cipher_list != NULL) 1381 sk_SSL_CIPHER_free(s->cipher_list); 1382 s->cipher_list = sk; 1383 if (s->cipher_list_by_id != NULL) 1384 sk_SSL_CIPHER_free(s->cipher_list_by_id); 1385 s->cipher_list_by_id = tmp_cipher_list; 1386 (void)sk_SSL_CIPHER_set_cmp_func(s->cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1387 1388 sk_SSL_CIPHER_sort(s->cipher_list_by_id); 1389 return 1; 1390 } 1391 1392 /* works well for SSLv2, not so good for SSLv3 */ 1393 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len) 1394 { 1395 char *p; 1396 STACK_OF(SSL_CIPHER) *sk; 1397 SSL_CIPHER *c; 1398 int i; 1399 1400 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1401 (len < 2)) 1402 return(NULL); 1403 1404 p=buf; 1405 sk=s->session->ciphers; 1406 1407 if (sk_SSL_CIPHER_num(sk) == 0) 1408 return NULL; 1409 1410 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1411 { 1412 int n; 1413 1414 c=sk_SSL_CIPHER_value(sk,i); 1415 n=strlen(c->name); 1416 if (n+1 > len) 1417 { 1418 if (p != buf) 1419 --p; 1420 *p='\0'; 1421 return buf; 1422 } 1423 strcpy(p,c->name); 1424 p+=n; 1425 *(p++)=':'; 1426 len-=n+1; 1427 } 1428 p[-1]='\0'; 1429 return(buf); 1430 } 1431 1432 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1433 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1434 { 1435 int i,j=0; 1436 SSL_CIPHER *c; 1437 unsigned char *q; 1438 #ifndef OPENSSL_NO_KRB5 1439 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1440 #endif /* OPENSSL_NO_KRB5 */ 1441 1442 if (sk == NULL) return(0); 1443 q=p; 1444 if (put_cb == NULL) 1445 put_cb = s->method->put_cipher_by_char; 1446 1447 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1448 { 1449 c=sk_SSL_CIPHER_value(sk,i); 1450 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1451 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1452 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1453 continue; 1454 #ifndef OPENSSL_NO_KRB5 1455 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1456 nokrb5) 1457 continue; 1458 #endif /* OPENSSL_NO_KRB5 */ 1459 #ifndef OPENSSL_NO_PSK 1460 /* with PSK there must be client callback set */ 1461 if ((c->algorithm_auth & SSL_aPSK) && 1462 s->psk_client_callback == NULL) 1463 continue; 1464 #endif /* OPENSSL_NO_PSK */ 1465 #ifndef OPENSSL_NO_SRP 1466 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) && 1467 !(s->srp_ctx.srp_Mask & SSL_kSRP)) 1468 continue; 1469 #endif /* OPENSSL_NO_SRP */ 1470 j = put_cb(c,p); 1471 p+=j; 1472 } 1473 /* If p == q, no ciphers; caller indicates an error. 1474 * Otherwise, add applicable SCSVs. */ 1475 if (p != q) 1476 { 1477 if (!s->renegotiate) 1478 { 1479 static SSL_CIPHER scsv = 1480 { 1481 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1482 }; 1483 j = put_cb(&scsv,p); 1484 p+=j; 1485 #ifdef OPENSSL_RI_DEBUG 1486 fprintf(stderr, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1487 #endif 1488 } 1489 1490 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) 1491 { 1492 static SSL_CIPHER scsv = 1493 { 1494 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1495 }; 1496 j = put_cb(&scsv,p); 1497 p+=j; 1498 } 1499 } 1500 1501 return(p-q); 1502 } 1503 1504 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1505 STACK_OF(SSL_CIPHER) **skp) 1506 { 1507 const SSL_CIPHER *c; 1508 STACK_OF(SSL_CIPHER) *sk; 1509 int i,n; 1510 1511 if (s->s3) 1512 s->s3->send_connection_binding = 0; 1513 1514 n=ssl_put_cipher_by_char(s,NULL,NULL); 1515 if (n == 0 || (num%n) != 0) 1516 { 1517 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1518 return(NULL); 1519 } 1520 if ((skp == NULL) || (*skp == NULL)) 1521 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1522 else 1523 { 1524 sk= *skp; 1525 sk_SSL_CIPHER_zero(sk); 1526 } 1527 1528 for (i=0; i<num; i+=n) 1529 { 1530 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1531 if (s->s3 && (n != 3 || !p[0]) && 1532 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1533 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1534 { 1535 /* SCSV fatal if renegotiating */ 1536 if (s->renegotiate) 1537 { 1538 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1539 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1540 goto err; 1541 } 1542 s->s3->send_connection_binding = 1; 1543 p += n; 1544 #ifdef OPENSSL_RI_DEBUG 1545 fprintf(stderr, "SCSV received by server\n"); 1546 #endif 1547 continue; 1548 } 1549 1550 /* Check for TLS_FALLBACK_SCSV */ 1551 if ((n != 3 || !p[0]) && 1552 (p[n-2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1553 (p[n-1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) 1554 { 1555 /* The SCSV indicates that the client previously tried a higher version. 1556 * Fail if the current version is an unexpected downgrade. */ 1557 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) 1558 { 1559 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_INAPPROPRIATE_FALLBACK); 1560 if (s->s3) 1561 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INAPPROPRIATE_FALLBACK); 1562 goto err; 1563 } 1564 continue; 1565 } 1566 1567 c=ssl_get_cipher_by_char(s,p); 1568 p+=n; 1569 if (c != NULL) 1570 { 1571 if (!sk_SSL_CIPHER_push(sk,c)) 1572 { 1573 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1574 goto err; 1575 } 1576 } 1577 } 1578 1579 if (skp != NULL) 1580 *skp=sk; 1581 return(sk); 1582 err: 1583 if ((skp == NULL) || (*skp == NULL)) 1584 sk_SSL_CIPHER_free(sk); 1585 return(NULL); 1586 } 1587 1588 1589 #ifndef OPENSSL_NO_TLSEXT 1590 /** return a servername extension value if provided in Client Hello, or NULL. 1591 * So far, only host_name types are defined (RFC 3546). 1592 */ 1593 1594 const char *SSL_get_servername(const SSL *s, const int type) 1595 { 1596 if (type != TLSEXT_NAMETYPE_host_name) 1597 return NULL; 1598 1599 return s->session && !s->tlsext_hostname ? 1600 s->session->tlsext_hostname : 1601 s->tlsext_hostname; 1602 } 1603 1604 int SSL_get_servername_type(const SSL *s) 1605 { 1606 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1607 return TLSEXT_NAMETYPE_host_name; 1608 return -1; 1609 } 1610 1611 # ifndef OPENSSL_NO_NEXTPROTONEG 1612 /* SSL_select_next_proto implements the standard protocol selection. It is 1613 * expected that this function is called from the callback set by 1614 * SSL_CTX_set_next_proto_select_cb. 1615 * 1616 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1617 * strings. The length byte itself is not included in the length. A byte 1618 * string of length 0 is invalid. No byte string may be truncated. 1619 * 1620 * The current, but experimental algorithm for selecting the protocol is: 1621 * 1622 * 1) If the server doesn't support NPN then this is indicated to the 1623 * callback. In this case, the client application has to abort the connection 1624 * or have a default application level protocol. 1625 * 1626 * 2) If the server supports NPN, but advertises an empty list then the 1627 * client selects the first protcol in its list, but indicates via the 1628 * API that this fallback case was enacted. 1629 * 1630 * 3) Otherwise, the client finds the first protocol in the server's list 1631 * that it supports and selects this protocol. This is because it's 1632 * assumed that the server has better information about which protocol 1633 * a client should use. 1634 * 1635 * 4) If the client doesn't support any of the server's advertised 1636 * protocols, then this is treated the same as case 2. 1637 * 1638 * It returns either 1639 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1640 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1641 */ 1642 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) 1643 { 1644 unsigned int i, j; 1645 const unsigned char *result; 1646 int status = OPENSSL_NPN_UNSUPPORTED; 1647 1648 /* For each protocol in server preference order, see if we support it. */ 1649 for (i = 0; i < server_len; ) 1650 { 1651 for (j = 0; j < client_len; ) 1652 { 1653 if (server[i] == client[j] && 1654 memcmp(&server[i+1], &client[j+1], server[i]) == 0) 1655 { 1656 /* We found a match */ 1657 result = &server[i]; 1658 status = OPENSSL_NPN_NEGOTIATED; 1659 goto found; 1660 } 1661 j += client[j]; 1662 j++; 1663 } 1664 i += server[i]; 1665 i++; 1666 } 1667 1668 /* There's no overlap between our protocols and the server's list. */ 1669 result = client; 1670 status = OPENSSL_NPN_NO_OVERLAP; 1671 1672 found: 1673 *out = (unsigned char *) result + 1; 1674 *outlen = result[0]; 1675 return status; 1676 } 1677 1678 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1679 * requested protocol for this connection and returns 0. If the client didn't 1680 * request any protocol, then *data is set to NULL. 1681 * 1682 * Note that the client can request any protocol it chooses. The value returned 1683 * from this function need not be a member of the list of supported protocols 1684 * provided by the callback. 1685 */ 1686 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1687 { 1688 *data = s->next_proto_negotiated; 1689 if (!*data) { 1690 *len = 0; 1691 } else { 1692 *len = s->next_proto_negotiated_len; 1693 } 1694 } 1695 1696 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1697 * TLS server needs a list of supported protocols for Next Protocol 1698 * Negotiation. The returned list must be in wire format. The list is returned 1699 * by setting |out| to point to it and |outlen| to its length. This memory will 1700 * not be modified, but one should assume that the SSL* keeps a reference to 1701 * it. 1702 * 1703 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no 1704 * such extension will be included in the ServerHello. */ 1705 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) 1706 { 1707 ctx->next_protos_advertised_cb = cb; 1708 ctx->next_protos_advertised_cb_arg = arg; 1709 } 1710 1711 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1712 * client needs to select a protocol from the server's provided list. |out| 1713 * must be set to point to the selected protocol (which may be within |in|). 1714 * The length of the protocol name must be written into |outlen|. The server's 1715 * advertised protocols are provided in |in| and |inlen|. The callback can 1716 * assume that |in| is syntactically valid. 1717 * 1718 * The client must select a protocol. It is fatal to the connection if this 1719 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1720 */ 1721 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) 1722 { 1723 ctx->next_proto_select_cb = cb; 1724 ctx->next_proto_select_cb_arg = arg; 1725 } 1726 # endif 1727 1728 /* SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. 1729 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1730 * length-prefixed strings). 1731 * 1732 * Returns 0 on success. */ 1733 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char* protos, 1734 unsigned protos_len) 1735 { 1736 if (ctx->alpn_client_proto_list) 1737 OPENSSL_free(ctx->alpn_client_proto_list); 1738 1739 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1740 if (!ctx->alpn_client_proto_list) 1741 return 1; 1742 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1743 ctx->alpn_client_proto_list_len = protos_len; 1744 1745 return 0; 1746 } 1747 1748 /* SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. 1749 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1750 * length-prefixed strings). 1751 * 1752 * Returns 0 on success. */ 1753 int SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1754 unsigned protos_len) 1755 { 1756 if (ssl->alpn_client_proto_list) 1757 OPENSSL_free(ssl->alpn_client_proto_list); 1758 1759 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1760 if (!ssl->alpn_client_proto_list) 1761 return 1; 1762 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1763 ssl->alpn_client_proto_list_len = protos_len; 1764 1765 return 0; 1766 } 1767 1768 /* SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called 1769 * during ClientHello processing in order to select an ALPN protocol from the 1770 * client's list of offered protocols. */ 1771 void SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1772 int (*cb) (SSL *ssl, 1773 const unsigned char **out, 1774 unsigned char *outlen, 1775 const unsigned char *in, 1776 unsigned int inlen, 1777 void *arg), 1778 void *arg) 1779 { 1780 ctx->alpn_select_cb = cb; 1781 ctx->alpn_select_cb_arg = arg; 1782 } 1783 1784 /* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|. 1785 * On return it sets |*data| to point to |*len| bytes of protocol name (not 1786 * including the leading length-prefix byte). If the server didn't respond with 1787 * a negotiated protocol then |*len| will be zero. */ 1788 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1789 unsigned *len) 1790 { 1791 *data = NULL; 1792 if (ssl->s3) 1793 *data = ssl->s3->alpn_selected; 1794 if (*data == NULL) 1795 *len = 0; 1796 else 1797 *len = ssl->s3->alpn_selected_len; 1798 } 1799 #endif 1800 1801 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1802 const char *label, size_t llen, const unsigned char *p, size_t plen, 1803 int use_context) 1804 { 1805 if (s->version < TLS1_VERSION) 1806 return -1; 1807 1808 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1809 llen, p, plen, 1810 use_context); 1811 } 1812 1813 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1814 { 1815 unsigned long l; 1816 1817 l=(unsigned long) 1818 ((unsigned int) a->session_id[0] )| 1819 ((unsigned int) a->session_id[1]<< 8L)| 1820 ((unsigned long)a->session_id[2]<<16L)| 1821 ((unsigned long)a->session_id[3]<<24L); 1822 return(l); 1823 } 1824 1825 /* NB: If this function (or indeed the hash function which uses a sort of 1826 * coarser function than this one) is changed, ensure 1827 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1828 * able to construct an SSL_SESSION that will collide with any existing session 1829 * with a matching session ID. */ 1830 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1831 { 1832 if (a->ssl_version != b->ssl_version) 1833 return(1); 1834 if (a->session_id_length != b->session_id_length) 1835 return(1); 1836 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1837 } 1838 1839 /* These wrapper functions should remain rather than redeclaring 1840 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1841 * variable. The reason is that the functions aren't static, they're exposed via 1842 * ssl.h. */ 1843 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1844 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1845 1846 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1847 { 1848 SSL_CTX *ret=NULL; 1849 1850 if (meth == NULL) 1851 { 1852 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1853 return(NULL); 1854 } 1855 1856 #ifdef OPENSSL_FIPS 1857 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1858 { 1859 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1860 return NULL; 1861 } 1862 #endif 1863 1864 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1865 { 1866 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1867 goto err; 1868 } 1869 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1870 if (ret == NULL) 1871 goto err; 1872 1873 memset(ret,0,sizeof(SSL_CTX)); 1874 1875 ret->method=meth; 1876 1877 ret->cert_store=NULL; 1878 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1879 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1880 ret->session_cache_head=NULL; 1881 ret->session_cache_tail=NULL; 1882 1883 /* We take the system default */ 1884 ret->session_timeout=meth->get_timeout(); 1885 1886 ret->new_session_cb=0; 1887 ret->remove_session_cb=0; 1888 ret->get_session_cb=0; 1889 ret->generate_session_id=0; 1890 1891 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1892 1893 ret->references=1; 1894 ret->quiet_shutdown=0; 1895 1896 /* ret->cipher=NULL;*/ 1897 /* ret->s2->challenge=NULL; 1898 ret->master_key=NULL; 1899 ret->key_arg=NULL; 1900 ret->s2->conn_id=NULL; */ 1901 1902 ret->info_callback=NULL; 1903 1904 ret->app_verify_callback=0; 1905 ret->app_verify_arg=NULL; 1906 1907 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1908 ret->read_ahead=0; 1909 ret->msg_callback=0; 1910 ret->msg_callback_arg=NULL; 1911 ret->verify_mode=SSL_VERIFY_NONE; 1912 #if 0 1913 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1914 #endif 1915 ret->sid_ctx_length=0; 1916 ret->default_verify_callback=NULL; 1917 if ((ret->cert=ssl_cert_new()) == NULL) 1918 goto err; 1919 1920 ret->default_passwd_callback=0; 1921 ret->default_passwd_callback_userdata=NULL; 1922 ret->client_cert_cb=0; 1923 ret->app_gen_cookie_cb=0; 1924 ret->app_verify_cookie_cb=0; 1925 1926 ret->sessions=lh_SSL_SESSION_new(); 1927 if (ret->sessions == NULL) goto err; 1928 ret->cert_store=X509_STORE_new(); 1929 if (ret->cert_store == NULL) goto err; 1930 1931 ssl_create_cipher_list(ret->method, 1932 &ret->cipher_list,&ret->cipher_list_by_id, 1933 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1934 if (ret->cipher_list == NULL 1935 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1936 { 1937 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1938 goto err2; 1939 } 1940 1941 ret->param = X509_VERIFY_PARAM_new(); 1942 if (!ret->param) 1943 goto err; 1944 1945 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1946 { 1947 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1948 goto err2; 1949 } 1950 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1951 { 1952 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1953 goto err2; 1954 } 1955 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1956 { 1957 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1958 goto err2; 1959 } 1960 1961 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1962 goto err; 1963 1964 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1965 1966 ret->extra_certs=NULL; 1967 /* No compression for DTLS */ 1968 if (meth->version != DTLS1_VERSION) 1969 ret->comp_methods=SSL_COMP_get_compression_methods(); 1970 1971 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1972 1973 #ifndef OPENSSL_NO_TLSEXT 1974 ret->tlsext_servername_callback = 0; 1975 ret->tlsext_servername_arg = NULL; 1976 /* Setup RFC4507 ticket keys */ 1977 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1978 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1979 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1980 ret->options |= SSL_OP_NO_TICKET; 1981 1982 ret->tlsext_status_cb = 0; 1983 ret->tlsext_status_arg = NULL; 1984 1985 # ifndef OPENSSL_NO_NEXTPROTONEG 1986 ret->next_protos_advertised_cb = 0; 1987 ret->next_proto_select_cb = 0; 1988 # endif 1989 #endif 1990 #ifndef OPENSSL_NO_PSK 1991 ret->psk_identity_hint=NULL; 1992 ret->psk_client_callback=NULL; 1993 ret->psk_server_callback=NULL; 1994 #endif 1995 #ifndef OPENSSL_NO_SRP 1996 SSL_CTX_SRP_CTX_init(ret); 1997 #endif 1998 #ifndef OPENSSL_NO_BUF_FREELISTS 1999 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 2000 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2001 if (!ret->rbuf_freelist) 2002 goto err; 2003 ret->rbuf_freelist->chunklen = 0; 2004 ret->rbuf_freelist->len = 0; 2005 ret->rbuf_freelist->head = NULL; 2006 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2007 if (!ret->wbuf_freelist) 2008 { 2009 OPENSSL_free(ret->rbuf_freelist); 2010 goto err; 2011 } 2012 ret->wbuf_freelist->chunklen = 0; 2013 ret->wbuf_freelist->len = 0; 2014 ret->wbuf_freelist->head = NULL; 2015 #endif 2016 #ifndef OPENSSL_NO_ENGINE 2017 ret->client_cert_engine = NULL; 2018 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2019 #define eng_strx(x) #x 2020 #define eng_str(x) eng_strx(x) 2021 /* Use specific client engine automatically... ignore errors */ 2022 { 2023 ENGINE *eng; 2024 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2025 if (!eng) 2026 { 2027 ERR_clear_error(); 2028 ENGINE_load_builtin_engines(); 2029 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2030 } 2031 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2032 ERR_clear_error(); 2033 } 2034 #endif 2035 #endif 2036 /* Default is to connect to non-RI servers. When RI is more widely 2037 * deployed might change this. 2038 */ 2039 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2040 2041 return(ret); 2042 err: 2043 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 2044 err2: 2045 if (ret != NULL) SSL_CTX_free(ret); 2046 return(NULL); 2047 } 2048 2049 #if 0 2050 static void SSL_COMP_free(SSL_COMP *comp) 2051 { OPENSSL_free(comp); } 2052 #endif 2053 2054 #ifndef OPENSSL_NO_BUF_FREELISTS 2055 static void 2056 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 2057 { 2058 SSL3_BUF_FREELIST_ENTRY *ent, *next; 2059 for (ent = list->head; ent; ent = next) 2060 { 2061 next = ent->next; 2062 OPENSSL_free(ent); 2063 } 2064 OPENSSL_free(list); 2065 } 2066 #endif 2067 2068 void SSL_CTX_free(SSL_CTX *a) 2069 { 2070 int i; 2071 2072 if (a == NULL) return; 2073 2074 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 2075 #ifdef REF_PRINT 2076 REF_PRINT("SSL_CTX",a); 2077 #endif 2078 if (i > 0) return; 2079 #ifdef REF_CHECK 2080 if (i < 0) 2081 { 2082 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 2083 abort(); /* ok */ 2084 } 2085 #endif 2086 2087 if (a->param) 2088 X509_VERIFY_PARAM_free(a->param); 2089 2090 /* 2091 * Free internal session cache. However: the remove_cb() may reference 2092 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2093 * after the sessions were flushed. 2094 * As the ex_data handling routines might also touch the session cache, 2095 * the most secure solution seems to be: empty (flush) the cache, then 2096 * free ex_data, then finally free the cache. 2097 * (See ticket [openssl.org #212].) 2098 */ 2099 if (a->sessions != NULL) 2100 SSL_CTX_flush_sessions(a,0); 2101 2102 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 2103 2104 if (a->sessions != NULL) 2105 lh_SSL_SESSION_free(a->sessions); 2106 2107 if (a->cert_store != NULL) 2108 X509_STORE_free(a->cert_store); 2109 if (a->cipher_list != NULL) 2110 sk_SSL_CIPHER_free(a->cipher_list); 2111 if (a->cipher_list_by_id != NULL) 2112 sk_SSL_CIPHER_free(a->cipher_list_by_id); 2113 if (a->cert != NULL) 2114 ssl_cert_free(a->cert); 2115 if (a->client_CA != NULL) 2116 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 2117 if (a->extra_certs != NULL) 2118 sk_X509_pop_free(a->extra_certs,X509_free); 2119 #if 0 /* This should never be done, since it removes a global database */ 2120 if (a->comp_methods != NULL) 2121 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 2122 #else 2123 a->comp_methods = NULL; 2124 #endif 2125 2126 #ifndef OPENSSL_NO_SRTP 2127 if (a->srtp_profiles) 2128 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 2129 #endif 2130 2131 #ifndef OPENSSL_NO_PSK 2132 if (a->psk_identity_hint) 2133 OPENSSL_free(a->psk_identity_hint); 2134 #endif 2135 #ifndef OPENSSL_NO_SRP 2136 SSL_CTX_SRP_CTX_free(a); 2137 #endif 2138 #ifndef OPENSSL_NO_ENGINE 2139 if (a->client_cert_engine) 2140 ENGINE_finish(a->client_cert_engine); 2141 #endif 2142 2143 #ifndef OPENSSL_NO_BUF_FREELISTS 2144 if (a->wbuf_freelist) 2145 ssl_buf_freelist_free(a->wbuf_freelist); 2146 if (a->rbuf_freelist) 2147 ssl_buf_freelist_free(a->rbuf_freelist); 2148 #endif 2149 2150 #ifndef OPENSSL_NO_TLSEXT 2151 if (a->tlsext_channel_id_private) 2152 EVP_PKEY_free(a->tlsext_channel_id_private); 2153 if (a->alpn_client_proto_list != NULL) 2154 OPENSSL_free(a->alpn_client_proto_list); 2155 #endif 2156 2157 OPENSSL_free(a); 2158 } 2159 2160 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2161 { 2162 ctx->default_passwd_callback=cb; 2163 } 2164 2165 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 2166 { 2167 ctx->default_passwd_callback_userdata=u; 2168 } 2169 2170 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 2171 { 2172 ctx->app_verify_callback=cb; 2173 ctx->app_verify_arg=arg; 2174 } 2175 2176 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 2177 { 2178 ctx->verify_mode=mode; 2179 ctx->default_verify_callback=cb; 2180 } 2181 2182 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 2183 { 2184 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2185 } 2186 2187 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2188 { 2189 CERT_PKEY *cpk; 2190 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 2191 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 2192 int rsa_tmp_export,dh_tmp_export,kl; 2193 unsigned long mask_k,mask_a,emask_k,emask_a; 2194 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2195 #ifndef OPENSSL_NO_ECDH 2196 int have_ecdh_tmp; 2197 #endif 2198 X509 *x = NULL; 2199 EVP_PKEY *ecc_pkey = NULL; 2200 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2201 2202 if (c == NULL) return; 2203 2204 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 2205 2206 #ifndef OPENSSL_NO_RSA 2207 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2208 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 2209 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2210 #else 2211 rsa_tmp=rsa_tmp_export=0; 2212 #endif 2213 #ifndef OPENSSL_NO_DH 2214 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2215 dh_tmp_export=(c->dh_tmp_cb != NULL || 2216 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2217 #else 2218 dh_tmp=dh_tmp_export=0; 2219 #endif 2220 2221 #ifndef OPENSSL_NO_ECDH 2222 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2223 #endif 2224 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 2225 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 2226 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2227 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2228 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2229 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2230 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2231 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 2232 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2233 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2234 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 2235 /* FIX THIS EAY EAY EAY */ 2236 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2237 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2238 cpk= &(c->pkeys[SSL_PKEY_ECC]); 2239 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 2240 mask_k=0; 2241 mask_a=0; 2242 emask_k=0; 2243 emask_a=0; 2244 2245 2246 2247 #ifdef CIPHER_DEBUG 2248 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2249 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 2250 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 2251 #endif 2252 2253 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2254 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2255 mask_k |= SSL_kGOST; 2256 mask_a |= SSL_aGOST01; 2257 } 2258 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2259 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2260 mask_k |= SSL_kGOST; 2261 mask_a |= SSL_aGOST94; 2262 } 2263 2264 if (rsa_enc || (rsa_tmp && rsa_sign)) 2265 mask_k|=SSL_kRSA; 2266 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2267 emask_k|=SSL_kRSA; 2268 2269 #if 0 2270 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2271 if ( (dh_tmp || dh_rsa || dh_dsa) && 2272 (rsa_enc || rsa_sign || dsa_sign)) 2273 mask_k|=SSL_kEDH; 2274 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2275 (rsa_enc || rsa_sign || dsa_sign)) 2276 emask_k|=SSL_kEDH; 2277 #endif 2278 2279 if (dh_tmp_export) 2280 emask_k|=SSL_kEDH; 2281 2282 if (dh_tmp) 2283 mask_k|=SSL_kEDH; 2284 2285 if (dh_rsa) mask_k|=SSL_kDHr; 2286 if (dh_rsa_export) emask_k|=SSL_kDHr; 2287 2288 if (dh_dsa) mask_k|=SSL_kDHd; 2289 if (dh_dsa_export) emask_k|=SSL_kDHd; 2290 2291 if (rsa_enc || rsa_sign) 2292 { 2293 mask_a|=SSL_aRSA; 2294 emask_a|=SSL_aRSA; 2295 } 2296 2297 if (dsa_sign) 2298 { 2299 mask_a|=SSL_aDSS; 2300 emask_a|=SSL_aDSS; 2301 } 2302 2303 mask_a|=SSL_aNULL; 2304 emask_a|=SSL_aNULL; 2305 2306 #ifndef OPENSSL_NO_KRB5 2307 mask_k|=SSL_kKRB5; 2308 mask_a|=SSL_aKRB5; 2309 emask_k|=SSL_kKRB5; 2310 emask_a|=SSL_aKRB5; 2311 #endif 2312 2313 /* An ECC certificate may be usable for ECDH and/or 2314 * ECDSA cipher suites depending on the key usage extension. 2315 */ 2316 if (have_ecc_cert) 2317 { 2318 /* This call populates extension flags (ex_flags) */ 2319 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2320 X509_check_purpose(x, -1, 0); 2321 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2322 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2323 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2324 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2325 ecc_pkey = X509_get_pubkey(x); 2326 ecc_pkey_size = (ecc_pkey != NULL) ? 2327 EVP_PKEY_bits(ecc_pkey) : 0; 2328 EVP_PKEY_free(ecc_pkey); 2329 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2330 { 2331 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2332 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2333 } 2334 #ifndef OPENSSL_NO_ECDH 2335 if (ecdh_ok) 2336 { 2337 2338 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) 2339 { 2340 mask_k|=SSL_kECDHr; 2341 mask_a|=SSL_aECDH; 2342 if (ecc_pkey_size <= 163) 2343 { 2344 emask_k|=SSL_kECDHr; 2345 emask_a|=SSL_aECDH; 2346 } 2347 } 2348 2349 if (pk_nid == NID_X9_62_id_ecPublicKey) 2350 { 2351 mask_k|=SSL_kECDHe; 2352 mask_a|=SSL_aECDH; 2353 if (ecc_pkey_size <= 163) 2354 { 2355 emask_k|=SSL_kECDHe; 2356 emask_a|=SSL_aECDH; 2357 } 2358 } 2359 } 2360 #endif 2361 #ifndef OPENSSL_NO_ECDSA 2362 if (ecdsa_ok) 2363 { 2364 mask_a|=SSL_aECDSA; 2365 emask_a|=SSL_aECDSA; 2366 } 2367 #endif 2368 } 2369 2370 #ifndef OPENSSL_NO_ECDH 2371 if (have_ecdh_tmp) 2372 { 2373 mask_k|=SSL_kEECDH; 2374 emask_k|=SSL_kEECDH; 2375 } 2376 #endif 2377 2378 #ifndef OPENSSL_NO_PSK 2379 mask_k |= SSL_kPSK; 2380 mask_a |= SSL_aPSK; 2381 emask_k |= SSL_kPSK; 2382 emask_a |= SSL_aPSK; 2383 #endif 2384 2385 c->mask_k=mask_k; 2386 c->mask_a=mask_a; 2387 c->export_mask_k=emask_k; 2388 c->export_mask_a=emask_a; 2389 c->valid=1; 2390 } 2391 2392 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2393 #define ku_reject(x, usage) \ 2394 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2395 2396 #ifndef OPENSSL_NO_EC 2397 2398 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2399 { 2400 unsigned long alg_k, alg_a; 2401 EVP_PKEY *pkey = NULL; 2402 int keysize = 0; 2403 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2404 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2405 2406 alg_k = cs->algorithm_mkey; 2407 alg_a = cs->algorithm_auth; 2408 2409 if (SSL_C_IS_EXPORT(cs)) 2410 { 2411 /* ECDH key length in export ciphers must be <= 163 bits */ 2412 pkey = X509_get_pubkey(x); 2413 if (pkey == NULL) return 0; 2414 keysize = EVP_PKEY_bits(pkey); 2415 EVP_PKEY_free(pkey); 2416 if (keysize > 163) return 0; 2417 } 2418 2419 /* This call populates the ex_flags field correctly */ 2420 X509_check_purpose(x, -1, 0); 2421 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2422 { 2423 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2424 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2425 } 2426 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2427 { 2428 /* key usage, if present, must allow key agreement */ 2429 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2430 { 2431 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2432 return 0; 2433 } 2434 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) 2435 { 2436 /* signature alg must be ECDSA */ 2437 if (pk_nid != NID_X9_62_id_ecPublicKey) 2438 { 2439 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2440 return 0; 2441 } 2442 } 2443 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) 2444 { 2445 /* signature alg must be RSA */ 2446 2447 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) 2448 { 2449 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2450 return 0; 2451 } 2452 } 2453 } 2454 if (alg_a & SSL_aECDSA) 2455 { 2456 /* key usage, if present, must allow signing */ 2457 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2458 { 2459 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2460 return 0; 2461 } 2462 } 2463 2464 return 1; /* all checks are ok */ 2465 } 2466 2467 #endif 2468 2469 /* THIS NEEDS CLEANING UP */ 2470 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2471 { 2472 unsigned long alg_k,alg_a; 2473 CERT *c; 2474 int i; 2475 2476 c=s->cert; 2477 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2478 2479 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2480 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2481 2482 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2483 { 2484 /* we don't need to look at SSL_kEECDH 2485 * since no certificate is needed for 2486 * anon ECDH and for authenticated 2487 * EECDH, the check for the auth 2488 * algorithm will set i correctly 2489 * NOTE: For ECDH-RSA, we need an ECC 2490 * not an RSA cert but for EECDH-RSA 2491 * we need an RSA cert. Placing the 2492 * checks for SSL_kECDH before RSA 2493 * checks ensures the correct cert is chosen. 2494 */ 2495 i=SSL_PKEY_ECC; 2496 } 2497 else if (alg_a & SSL_aECDSA) 2498 { 2499 i=SSL_PKEY_ECC; 2500 } 2501 else if (alg_k & SSL_kDHr) 2502 i=SSL_PKEY_DH_RSA; 2503 else if (alg_k & SSL_kDHd) 2504 i=SSL_PKEY_DH_DSA; 2505 else if (alg_a & SSL_aDSS) 2506 i=SSL_PKEY_DSA_SIGN; 2507 else if (alg_a & SSL_aRSA) 2508 { 2509 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2510 i=SSL_PKEY_RSA_SIGN; 2511 else 2512 i=SSL_PKEY_RSA_ENC; 2513 } 2514 else if (alg_a & SSL_aKRB5) 2515 { 2516 /* VRS something else here? */ 2517 return(NULL); 2518 } 2519 else if (alg_a & SSL_aGOST94) 2520 i=SSL_PKEY_GOST94; 2521 else if (alg_a & SSL_aGOST01) 2522 i=SSL_PKEY_GOST01; 2523 else /* if (alg_a & SSL_aNULL) */ 2524 { 2525 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR); 2526 return(NULL); 2527 } 2528 2529 return c->pkeys + i; 2530 } 2531 2532 X509 *ssl_get_server_send_cert(const SSL *s) 2533 { 2534 CERT_PKEY *cpk; 2535 cpk = ssl_get_server_send_pkey(s); 2536 if (!cpk) 2537 return NULL; 2538 return cpk->x509; 2539 } 2540 2541 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd) 2542 { 2543 unsigned long alg_a; 2544 CERT *c; 2545 2546 alg_a = cipher->algorithm_auth; 2547 c=s->cert; 2548 2549 /* SHA1 is the default for all signature algorithms up to TLS 1.2, 2550 * except RSA which is handled specially in s3_srvr.c */ 2551 if (pmd) 2552 *pmd = EVP_sha1(); 2553 2554 if ((alg_a & SSL_aDSS) && 2555 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2556 { 2557 if (pmd && s->s3 && s->s3->digest_dsa) 2558 *pmd = s->s3->digest_dsa; 2559 return c->pkeys[SSL_PKEY_DSA_SIGN].privatekey; 2560 } 2561 else if (alg_a & SSL_aRSA) 2562 { 2563 if (pmd && s->s3 && s->s3->digest_rsa) 2564 *pmd = s->s3->digest_rsa; 2565 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2566 return c->pkeys[SSL_PKEY_RSA_SIGN].privatekey; 2567 if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2568 return c->pkeys[SSL_PKEY_RSA_ENC].privatekey; 2569 } 2570 else if ((alg_a & SSL_aECDSA) && 2571 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2572 { 2573 if (pmd && s->s3 && s->s3->digest_ecdsa) 2574 *pmd = s->s3->digest_ecdsa; 2575 return c->pkeys[SSL_PKEY_ECC].privatekey; 2576 } 2577 2578 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2579 return(NULL); 2580 } 2581 2582 void ssl_update_cache(SSL *s,int mode) 2583 { 2584 int i; 2585 2586 /* If the session_id_length is 0, we are not supposed to cache it, 2587 * and it would be rather hard to do anyway :-) */ 2588 if (s->session->session_id_length == 0) return; 2589 2590 i=s->session_ctx->session_cache_mode; 2591 if ((i & mode) && (!s->hit) 2592 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2593 || SSL_CTX_add_session(s->session_ctx,s->session)) 2594 && (s->session_ctx->new_session_cb != NULL)) 2595 { 2596 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2597 if (!s->session_ctx->new_session_cb(s,s->session)) 2598 SSL_SESSION_free(s->session); 2599 } 2600 2601 /* auto flush every 255 connections */ 2602 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2603 ((i & mode) == mode)) 2604 { 2605 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2606 ?s->session_ctx->stats.sess_connect_good 2607 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2608 { 2609 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2610 } 2611 } 2612 } 2613 2614 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2615 { 2616 return(s->method); 2617 } 2618 2619 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2620 { 2621 int conn= -1; 2622 int ret=1; 2623 2624 if (s->method != meth) 2625 { 2626 if (s->handshake_func != NULL) 2627 conn=(s->handshake_func == s->method->ssl_connect); 2628 2629 if (s->method->version == meth->version) 2630 s->method=meth; 2631 else 2632 { 2633 s->method->ssl_free(s); 2634 s->method=meth; 2635 ret=s->method->ssl_new(s); 2636 } 2637 2638 if (conn == 1) 2639 s->handshake_func=meth->ssl_connect; 2640 else if (conn == 0) 2641 s->handshake_func=meth->ssl_accept; 2642 } 2643 return(ret); 2644 } 2645 2646 int SSL_get_error(const SSL *s,int i) 2647 { 2648 int reason; 2649 unsigned long l; 2650 BIO *bio; 2651 2652 if (i > 0) return(SSL_ERROR_NONE); 2653 2654 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2655 * etc, where we do encode the error */ 2656 if ((l=ERR_peek_error()) != 0) 2657 { 2658 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2659 return(SSL_ERROR_SYSCALL); 2660 else 2661 return(SSL_ERROR_SSL); 2662 } 2663 2664 if ((i < 0) && SSL_want_read(s)) 2665 { 2666 bio=SSL_get_rbio(s); 2667 if (BIO_should_read(bio)) 2668 return(SSL_ERROR_WANT_READ); 2669 else if (BIO_should_write(bio)) 2670 /* This one doesn't make too much sense ... We never try 2671 * to write to the rbio, and an application program where 2672 * rbio and wbio are separate couldn't even know what it 2673 * should wait for. 2674 * However if we ever set s->rwstate incorrectly 2675 * (so that we have SSL_want_read(s) instead of 2676 * SSL_want_write(s)) and rbio and wbio *are* the same, 2677 * this test works around that bug; so it might be safer 2678 * to keep it. */ 2679 return(SSL_ERROR_WANT_WRITE); 2680 else if (BIO_should_io_special(bio)) 2681 { 2682 reason=BIO_get_retry_reason(bio); 2683 if (reason == BIO_RR_CONNECT) 2684 return(SSL_ERROR_WANT_CONNECT); 2685 else if (reason == BIO_RR_ACCEPT) 2686 return(SSL_ERROR_WANT_ACCEPT); 2687 else 2688 return(SSL_ERROR_SYSCALL); /* unknown */ 2689 } 2690 } 2691 2692 if ((i < 0) && SSL_want_write(s)) 2693 { 2694 bio=SSL_get_wbio(s); 2695 if (BIO_should_write(bio)) 2696 return(SSL_ERROR_WANT_WRITE); 2697 else if (BIO_should_read(bio)) 2698 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2699 return(SSL_ERROR_WANT_READ); 2700 else if (BIO_should_io_special(bio)) 2701 { 2702 reason=BIO_get_retry_reason(bio); 2703 if (reason == BIO_RR_CONNECT) 2704 return(SSL_ERROR_WANT_CONNECT); 2705 else if (reason == BIO_RR_ACCEPT) 2706 return(SSL_ERROR_WANT_ACCEPT); 2707 else 2708 return(SSL_ERROR_SYSCALL); 2709 } 2710 } 2711 if ((i < 0) && SSL_want_x509_lookup(s)) 2712 { 2713 return(SSL_ERROR_WANT_X509_LOOKUP); 2714 } 2715 if ((i < 0) && SSL_want_channel_id_lookup(s)) 2716 { 2717 return(SSL_ERROR_WANT_CHANNEL_ID_LOOKUP); 2718 } 2719 2720 if (i == 0) 2721 { 2722 if (s->version == SSL2_VERSION) 2723 { 2724 /* assume it is the socket being closed */ 2725 return(SSL_ERROR_ZERO_RETURN); 2726 } 2727 else 2728 { 2729 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2730 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2731 return(SSL_ERROR_ZERO_RETURN); 2732 } 2733 } 2734 return(SSL_ERROR_SYSCALL); 2735 } 2736 2737 int SSL_do_handshake(SSL *s) 2738 { 2739 int ret=1; 2740 2741 if (s->handshake_func == NULL) 2742 { 2743 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2744 return(-1); 2745 } 2746 2747 s->method->ssl_renegotiate_check(s); 2748 2749 if (SSL_in_init(s) || SSL_in_before(s)) 2750 { 2751 ret=s->handshake_func(s); 2752 } 2753 return(ret); 2754 } 2755 2756 /* For the next 2 functions, SSL_clear() sets shutdown and so 2757 * one of these calls will reset it */ 2758 void SSL_set_accept_state(SSL *s) 2759 { 2760 s->server=1; 2761 s->shutdown=0; 2762 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2763 s->handshake_func=s->method->ssl_accept; 2764 /* clear the current cipher */ 2765 ssl_clear_cipher_ctx(s); 2766 ssl_clear_hash_ctx(&s->read_hash); 2767 ssl_clear_hash_ctx(&s->write_hash); 2768 } 2769 2770 void SSL_set_connect_state(SSL *s) 2771 { 2772 s->server=0; 2773 s->shutdown=0; 2774 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2775 s->handshake_func=s->method->ssl_connect; 2776 /* clear the current cipher */ 2777 ssl_clear_cipher_ctx(s); 2778 ssl_clear_hash_ctx(&s->read_hash); 2779 ssl_clear_hash_ctx(&s->write_hash); 2780 } 2781 2782 int ssl_undefined_function(SSL *s) 2783 { 2784 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2785 return(0); 2786 } 2787 2788 int ssl_undefined_void_function(void) 2789 { 2790 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2791 return(0); 2792 } 2793 2794 int ssl_undefined_const_function(const SSL *s) 2795 { 2796 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2797 return(0); 2798 } 2799 2800 SSL_METHOD *ssl_bad_method(int ver) 2801 { 2802 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2803 return(NULL); 2804 } 2805 2806 static const char *ssl_get_version(int version) 2807 { 2808 if (version == TLS1_2_VERSION) 2809 return("TLSv1.2"); 2810 else if (version == TLS1_1_VERSION) 2811 return("TLSv1.1"); 2812 else if (version == TLS1_VERSION) 2813 return("TLSv1"); 2814 else if (version == SSL3_VERSION) 2815 return("SSLv3"); 2816 else if (version == SSL2_VERSION) 2817 return("SSLv2"); 2818 else 2819 return("unknown"); 2820 } 2821 2822 const char *SSL_get_version(const SSL *s) 2823 { 2824 return ssl_get_version(s->version); 2825 } 2826 2827 const char *SSL_SESSION_get_version(const SSL_SESSION *s) 2828 { 2829 return ssl_get_version(s->ssl_version); 2830 } 2831 2832 const char* SSL_authentication_method(const SSL* ssl) 2833 { 2834 if (ssl->cert != NULL && ssl->cert->rsa_tmp != NULL) 2835 return SSL_TXT_RSA "_" SSL_TXT_EXPORT; 2836 switch (ssl->version) 2837 { 2838 case SSL2_VERSION: 2839 return SSL_TXT_RSA; 2840 default: 2841 return SSL_CIPHER_authentication_method(ssl->s3->tmp.new_cipher); 2842 } 2843 } 2844 2845 SSL *SSL_dup(SSL *s) 2846 { 2847 STACK_OF(X509_NAME) *sk; 2848 X509_NAME *xn; 2849 SSL *ret; 2850 int i; 2851 2852 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2853 return(NULL); 2854 2855 ret->version = s->version; 2856 ret->type = s->type; 2857 ret->method = s->method; 2858 2859 if (s->session != NULL) 2860 { 2861 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2862 SSL_copy_session_id(ret,s); 2863 } 2864 else 2865 { 2866 /* No session has been established yet, so we have to expect 2867 * that s->cert or ret->cert will be changed later -- 2868 * they should not both point to the same object, 2869 * and thus we can't use SSL_copy_session_id. */ 2870 2871 ret->method->ssl_free(ret); 2872 ret->method = s->method; 2873 ret->method->ssl_new(ret); 2874 2875 if (s->cert != NULL) 2876 { 2877 if (ret->cert != NULL) 2878 { 2879 ssl_cert_free(ret->cert); 2880 } 2881 ret->cert = ssl_cert_dup(s->cert); 2882 if (ret->cert == NULL) 2883 goto err; 2884 } 2885 2886 SSL_set_session_id_context(ret, 2887 s->sid_ctx, s->sid_ctx_length); 2888 } 2889 2890 ret->options=s->options; 2891 ret->mode=s->mode; 2892 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2893 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2894 ret->msg_callback = s->msg_callback; 2895 ret->msg_callback_arg = s->msg_callback_arg; 2896 SSL_set_verify(ret,SSL_get_verify_mode(s), 2897 SSL_get_verify_callback(s)); 2898 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2899 ret->generate_session_id = s->generate_session_id; 2900 2901 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2902 2903 ret->debug=s->debug; 2904 2905 /* copy app data, a little dangerous perhaps */ 2906 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2907 goto err; 2908 2909 /* setup rbio, and wbio */ 2910 if (s->rbio != NULL) 2911 { 2912 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2913 goto err; 2914 } 2915 if (s->wbio != NULL) 2916 { 2917 if (s->wbio != s->rbio) 2918 { 2919 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2920 goto err; 2921 } 2922 else 2923 ret->wbio=ret->rbio; 2924 } 2925 ret->rwstate = s->rwstate; 2926 ret->in_handshake = s->in_handshake; 2927 ret->handshake_func = s->handshake_func; 2928 ret->server = s->server; 2929 ret->renegotiate = s->renegotiate; 2930 ret->new_session = s->new_session; 2931 ret->quiet_shutdown = s->quiet_shutdown; 2932 ret->shutdown=s->shutdown; 2933 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2934 ret->rstate=s->rstate; 2935 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2936 ret->hit=s->hit; 2937 2938 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2939 2940 /* dup the cipher_list and cipher_list_by_id stacks */ 2941 if (s->cipher_list != NULL) 2942 { 2943 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2944 goto err; 2945 } 2946 if (s->cipher_list_by_id != NULL) 2947 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2948 == NULL) 2949 goto err; 2950 2951 /* Dup the client_CA list */ 2952 if (s->client_CA != NULL) 2953 { 2954 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2955 ret->client_CA=sk; 2956 for (i=0; i<sk_X509_NAME_num(sk); i++) 2957 { 2958 xn=sk_X509_NAME_value(sk,i); 2959 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2960 { 2961 X509_NAME_free(xn); 2962 goto err; 2963 } 2964 } 2965 } 2966 2967 if (0) 2968 { 2969 err: 2970 if (ret != NULL) SSL_free(ret); 2971 ret=NULL; 2972 } 2973 return(ret); 2974 } 2975 2976 void ssl_clear_cipher_ctx(SSL *s) 2977 { 2978 if (s->enc_read_ctx != NULL) 2979 { 2980 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2981 OPENSSL_free(s->enc_read_ctx); 2982 s->enc_read_ctx=NULL; 2983 } 2984 if (s->enc_write_ctx != NULL) 2985 { 2986 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2987 OPENSSL_free(s->enc_write_ctx); 2988 s->enc_write_ctx=NULL; 2989 } 2990 #ifndef OPENSSL_NO_COMP 2991 if (s->expand != NULL) 2992 { 2993 COMP_CTX_free(s->expand); 2994 s->expand=NULL; 2995 } 2996 if (s->compress != NULL) 2997 { 2998 COMP_CTX_free(s->compress); 2999 s->compress=NULL; 3000 } 3001 #endif 3002 } 3003 3004 /* Fix this function so that it takes an optional type parameter */ 3005 X509 *SSL_get_certificate(const SSL *s) 3006 { 3007 if (s->cert != NULL) 3008 return(s->cert->key->x509); 3009 else 3010 return(NULL); 3011 } 3012 3013 /* Fix this function so that it takes an optional type parameter */ 3014 EVP_PKEY *SSL_get_privatekey(SSL *s) 3015 { 3016 if (s->cert != NULL) 3017 return(s->cert->key->privatekey); 3018 else 3019 return(NULL); 3020 } 3021 3022 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 3023 { 3024 if ((s->session != NULL) && (s->session->cipher != NULL)) 3025 return(s->session->cipher); 3026 return(NULL); 3027 } 3028 #ifdef OPENSSL_NO_COMP 3029 const void *SSL_get_current_compression(SSL *s) 3030 { 3031 return NULL; 3032 } 3033 const void *SSL_get_current_expansion(SSL *s) 3034 { 3035 return NULL; 3036 } 3037 #else 3038 3039 const COMP_METHOD *SSL_get_current_compression(SSL *s) 3040 { 3041 if (s->compress != NULL) 3042 return(s->compress->meth); 3043 return(NULL); 3044 } 3045 3046 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 3047 { 3048 if (s->expand != NULL) 3049 return(s->expand->meth); 3050 return(NULL); 3051 } 3052 #endif 3053 3054 int ssl_init_wbio_buffer(SSL *s,int push) 3055 { 3056 BIO *bbio; 3057 3058 if (s->bbio == NULL) 3059 { 3060 bbio=BIO_new(BIO_f_buffer()); 3061 if (bbio == NULL) return(0); 3062 s->bbio=bbio; 3063 } 3064 else 3065 { 3066 bbio=s->bbio; 3067 if (s->bbio == s->wbio) 3068 s->wbio=BIO_pop(s->wbio); 3069 } 3070 (void)BIO_reset(bbio); 3071 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3072 if (!BIO_set_read_buffer_size(bbio,1)) 3073 { 3074 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 3075 return(0); 3076 } 3077 if (push) 3078 { 3079 if (s->wbio != bbio) 3080 s->wbio=BIO_push(bbio,s->wbio); 3081 } 3082 else 3083 { 3084 if (s->wbio == bbio) 3085 s->wbio=BIO_pop(bbio); 3086 } 3087 return(1); 3088 } 3089 3090 void ssl_free_wbio_buffer(SSL *s) 3091 { 3092 if (s->bbio == NULL) return; 3093 3094 if (s->bbio == s->wbio) 3095 { 3096 /* remove buffering */ 3097 s->wbio=BIO_pop(s->wbio); 3098 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 3099 assert(s->wbio != NULL); 3100 #endif 3101 } 3102 BIO_free(s->bbio); 3103 s->bbio=NULL; 3104 } 3105 3106 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 3107 { 3108 ctx->quiet_shutdown=mode; 3109 } 3110 3111 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3112 { 3113 return(ctx->quiet_shutdown); 3114 } 3115 3116 void SSL_set_quiet_shutdown(SSL *s,int mode) 3117 { 3118 s->quiet_shutdown=mode; 3119 } 3120 3121 int SSL_get_quiet_shutdown(const SSL *s) 3122 { 3123 return(s->quiet_shutdown); 3124 } 3125 3126 void SSL_set_shutdown(SSL *s,int mode) 3127 { 3128 s->shutdown=mode; 3129 } 3130 3131 int SSL_get_shutdown(const SSL *s) 3132 { 3133 return(s->shutdown); 3134 } 3135 3136 int SSL_version(const SSL *s) 3137 { 3138 return(s->version); 3139 } 3140 3141 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 3142 { 3143 return(ssl->ctx); 3144 } 3145 3146 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 3147 { 3148 if (ssl->ctx == ctx) 3149 return ssl->ctx; 3150 #ifndef OPENSSL_NO_TLSEXT 3151 if (ctx == NULL) 3152 ctx = ssl->initial_ctx; 3153 #endif 3154 if (ssl->cert != NULL) 3155 ssl_cert_free(ssl->cert); 3156 ssl->cert = ssl_cert_dup(ctx->cert); 3157 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 3158 if (ssl->ctx != NULL) 3159 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3160 ssl->ctx = ctx; 3161 return(ssl->ctx); 3162 } 3163 3164 #ifndef OPENSSL_NO_STDIO 3165 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3166 { 3167 return(X509_STORE_set_default_paths(ctx->cert_store)); 3168 } 3169 3170 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3171 const char *CApath) 3172 { 3173 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 3174 } 3175 #endif 3176 3177 void SSL_set_info_callback(SSL *ssl, 3178 void (*cb)(const SSL *ssl,int type,int val)) 3179 { 3180 ssl->info_callback=cb; 3181 } 3182 3183 /* One compiler (Diab DCC) doesn't like argument names in returned 3184 function pointer. */ 3185 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 3186 { 3187 return ssl->info_callback; 3188 } 3189 3190 int SSL_state(const SSL *ssl) 3191 { 3192 return(ssl->state); 3193 } 3194 3195 void SSL_set_state(SSL *ssl, int state) 3196 { 3197 ssl->state = state; 3198 } 3199 3200 void SSL_set_verify_result(SSL *ssl,long arg) 3201 { 3202 ssl->verify_result=arg; 3203 } 3204 3205 long SSL_get_verify_result(const SSL *ssl) 3206 { 3207 return(ssl->verify_result); 3208 } 3209 3210 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3211 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3212 { 3213 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3214 new_func, dup_func, free_func); 3215 } 3216 3217 int SSL_set_ex_data(SSL *s,int idx,void *arg) 3218 { 3219 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3220 } 3221 3222 void *SSL_get_ex_data(const SSL *s,int idx) 3223 { 3224 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3225 } 3226 3227 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3228 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3229 { 3230 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3231 new_func, dup_func, free_func); 3232 } 3233 3234 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 3235 { 3236 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3237 } 3238 3239 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 3240 { 3241 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3242 } 3243 3244 int ssl_ok(SSL *s) 3245 { 3246 return(1); 3247 } 3248 3249 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3250 { 3251 return(ctx->cert_store); 3252 } 3253 3254 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 3255 { 3256 if (ctx->cert_store != NULL) 3257 X509_STORE_free(ctx->cert_store); 3258 ctx->cert_store=store; 3259 } 3260 3261 int SSL_want(const SSL *s) 3262 { 3263 return(s->rwstate); 3264 } 3265 3266 /*! 3267 * \brief Set the callback for generating temporary RSA keys. 3268 * \param ctx the SSL context. 3269 * \param cb the callback 3270 */ 3271 3272 #ifndef OPENSSL_NO_RSA 3273 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 3274 int is_export, 3275 int keylength)) 3276 { 3277 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3278 } 3279 3280 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 3281 int is_export, 3282 int keylength)) 3283 { 3284 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3285 } 3286 #endif 3287 3288 #ifdef DOXYGEN 3289 /*! 3290 * \brief The RSA temporary key callback function. 3291 * \param ssl the SSL session. 3292 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3293 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3294 * of the required key in bits. 3295 * \return the temporary RSA key. 3296 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3297 */ 3298 3299 RSA *cb(SSL *ssl,int is_export,int keylength) 3300 {} 3301 #endif 3302 3303 /*! 3304 * \brief Set the callback for generating temporary DH keys. 3305 * \param ctx the SSL context. 3306 * \param dh the callback 3307 */ 3308 3309 #ifndef OPENSSL_NO_DH 3310 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 3311 int keylength)) 3312 { 3313 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3314 } 3315 3316 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 3317 int keylength)) 3318 { 3319 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3320 } 3321 #endif 3322 3323 #ifndef OPENSSL_NO_ECDH 3324 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3325 int keylength)) 3326 { 3327 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3328 } 3329 3330 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3331 int keylength)) 3332 { 3333 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3334 } 3335 #endif 3336 3337 #ifndef OPENSSL_NO_PSK 3338 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3339 { 3340 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3341 { 3342 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3343 return 0; 3344 } 3345 if (ctx->psk_identity_hint != NULL) 3346 OPENSSL_free(ctx->psk_identity_hint); 3347 if (identity_hint != NULL) 3348 { 3349 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3350 if (ctx->psk_identity_hint == NULL) 3351 return 0; 3352 } 3353 else 3354 ctx->psk_identity_hint = NULL; 3355 return 1; 3356 } 3357 3358 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3359 { 3360 if (s == NULL) 3361 return 0; 3362 3363 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3364 { 3365 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3366 return 0; 3367 } 3368 3369 /* Clear hint in SSL and associated SSL_SESSION (if any). */ 3370 if (s->psk_identity_hint != NULL) 3371 { 3372 OPENSSL_free(s->psk_identity_hint); 3373 s->psk_identity_hint = NULL; 3374 } 3375 if (s->session != NULL && s->session->psk_identity_hint != NULL) 3376 { 3377 OPENSSL_free(s->session->psk_identity_hint); 3378 s->session->psk_identity_hint = NULL; 3379 } 3380 3381 if (identity_hint != NULL) 3382 { 3383 /* The hint is stored in SSL and SSL_SESSION with the one in 3384 * SSL_SESSION taking precedence. Thus, if SSL_SESSION is avaiable, 3385 * we store the hint there, otherwise we store it in SSL. */ 3386 if (s->session != NULL) 3387 { 3388 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3389 if (s->session->psk_identity_hint == NULL) 3390 return 0; 3391 } 3392 else 3393 { 3394 s->psk_identity_hint = BUF_strdup(identity_hint); 3395 if (s->psk_identity_hint == NULL) 3396 return 0; 3397 } 3398 } 3399 return 1; 3400 } 3401 3402 const char *SSL_get_psk_identity_hint(const SSL *s) 3403 { 3404 if (s == NULL) 3405 return NULL; 3406 /* The hint is stored in SSL and SSL_SESSION with the one in SSL_SESSION 3407 * taking precedence. */ 3408 if (s->session != NULL) 3409 return(s->session->psk_identity_hint); 3410 return(s->psk_identity_hint); 3411 } 3412 3413 const char *SSL_get_psk_identity(const SSL *s) 3414 { 3415 if (s == NULL || s->session == NULL) 3416 return NULL; 3417 return(s->session->psk_identity); 3418 } 3419 3420 void SSL_set_psk_client_callback(SSL *s, 3421 unsigned int (*cb)(SSL *ssl, const char *hint, 3422 char *identity, unsigned int max_identity_len, unsigned char *psk, 3423 unsigned int max_psk_len)) 3424 { 3425 s->psk_client_callback = cb; 3426 } 3427 3428 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3429 unsigned int (*cb)(SSL *ssl, const char *hint, 3430 char *identity, unsigned int max_identity_len, unsigned char *psk, 3431 unsigned int max_psk_len)) 3432 { 3433 ctx->psk_client_callback = cb; 3434 } 3435 3436 void SSL_set_psk_server_callback(SSL *s, 3437 unsigned int (*cb)(SSL *ssl, const char *identity, 3438 unsigned char *psk, unsigned int max_psk_len)) 3439 { 3440 s->psk_server_callback = cb; 3441 } 3442 3443 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3444 unsigned int (*cb)(SSL *ssl, const char *identity, 3445 unsigned char *psk, unsigned int max_psk_len)) 3446 { 3447 ctx->psk_server_callback = cb; 3448 } 3449 #endif 3450 3451 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)) 3452 { 3453 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3454 } 3455 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)) 3456 { 3457 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3458 } 3459 3460 int SSL_cutthrough_complete(const SSL *s) 3461 { 3462 return (!s->server && /* cutthrough only applies to clients */ 3463 !s->hit && /* full-handshake */ 3464 s->version >= SSL3_VERSION && 3465 s->s3->in_read_app_data == 0 && /* cutthrough only applies to write() */ 3466 (SSL_get_mode((SSL*)s) & SSL_MODE_HANDSHAKE_CUTTHROUGH) && /* cutthrough enabled */ 3467 ssl3_can_cutthrough(s) && /* cutthrough allowed */ 3468 s->s3->previous_server_finished_len == 0 && /* not a renegotiation handshake */ 3469 (s->state == SSL3_ST_CR_SESSION_TICKET_A || /* ready to write app-data*/ 3470 s->state == SSL3_ST_CR_FINISHED_A)); 3471 } 3472 3473 int ssl3_can_cutthrough(const SSL *s) 3474 { 3475 const SSL_CIPHER *c; 3476 3477 /* require a strong enough cipher */ 3478 if (SSL_get_cipher_bits(s, NULL) < 128) 3479 return 0; 3480 3481 /* require ALPN or NPN extension */ 3482 if (!s->s3->alpn_selected 3483 #ifndef OPENSSL_NO_NEXTPROTONEG 3484 && !s->s3->next_proto_neg_seen 3485 #endif 3486 ) 3487 { 3488 return 0; 3489 } 3490 3491 /* require a forward-secret cipher */ 3492 c = SSL_get_current_cipher(s); 3493 if (!c || (c->algorithm_mkey != SSL_kEDH && 3494 c->algorithm_mkey != SSL_kEECDH)) 3495 { 3496 return 0; 3497 } 3498 3499 return 1; 3500 } 3501 3502 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3503 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3504 * any. If EVP_MD pointer is passed, initializes ctx with this md 3505 * Returns newly allocated ctx; 3506 */ 3507 3508 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3509 { 3510 ssl_clear_hash_ctx(hash); 3511 *hash = EVP_MD_CTX_create(); 3512 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3513 return *hash; 3514 } 3515 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3516 { 3517 3518 if (*hash) EVP_MD_CTX_destroy(*hash); 3519 *hash=NULL; 3520 } 3521 3522 void SSL_set_debug(SSL *s, int debug) 3523 { 3524 s->debug = debug; 3525 } 3526 3527 int SSL_cache_hit(SSL *s) 3528 { 3529 return s->hit; 3530 } 3531 3532 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3533 #include "../crypto/bio/bss_file.c" 3534 #endif 3535 3536 IMPLEMENT_STACK_OF(SSL_CIPHER) 3537 IMPLEMENT_STACK_OF(SSL_COMP) 3538 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3539 ssl_cipher_id); 3540
