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 j = put_cb(c,p); 1466 p+=j; 1467 } 1468 /* If p == q, no ciphers; caller indicates an error. 1469 * Otherwise, add applicable SCSVs. */ 1470 if (p != q) 1471 { 1472 if (!s->renegotiate) 1473 { 1474 static SSL_CIPHER scsv = 1475 { 1476 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1477 }; 1478 j = put_cb(&scsv,p); 1479 p+=j; 1480 #ifdef OPENSSL_RI_DEBUG 1481 fprintf(stderr, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1482 #endif 1483 } 1484 1485 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) 1486 { 1487 static SSL_CIPHER scsv = 1488 { 1489 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1490 }; 1491 j = put_cb(&scsv,p); 1492 p+=j; 1493 } 1494 } 1495 return(p-q); 1496 } 1497 1498 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1499 STACK_OF(SSL_CIPHER) **skp) 1500 { 1501 const SSL_CIPHER *c; 1502 STACK_OF(SSL_CIPHER) *sk; 1503 int i,n; 1504 1505 if (s->s3) 1506 s->s3->send_connection_binding = 0; 1507 1508 n=ssl_put_cipher_by_char(s,NULL,NULL); 1509 if (n == 0 || (num%n) != 0) 1510 { 1511 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1512 return(NULL); 1513 } 1514 if ((skp == NULL) || (*skp == NULL)) 1515 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1516 else 1517 { 1518 sk= *skp; 1519 sk_SSL_CIPHER_zero(sk); 1520 } 1521 1522 for (i=0; i<num; i+=n) 1523 { 1524 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1525 if (s->s3 && (n != 3 || !p[0]) && 1526 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1527 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1528 { 1529 /* SCSV fatal if renegotiating */ 1530 if (s->renegotiate) 1531 { 1532 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1533 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1534 goto err; 1535 } 1536 s->s3->send_connection_binding = 1; 1537 p += n; 1538 #ifdef OPENSSL_RI_DEBUG 1539 fprintf(stderr, "SCSV received by server\n"); 1540 #endif 1541 continue; 1542 } 1543 1544 /* Check for TLS_FALLBACK_SCSV */ 1545 if (s->s3 && (n != 3 || !p[0]) && 1546 (p[n-2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1547 (p[n-1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) 1548 { 1549 /* The SCSV indicates that the client previously tried a higher version. 1550 * Fail if the current version is an unexpected downgrade. */ 1551 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) 1552 { 1553 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_INAPPROPRIATE_FALLBACK); 1554 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INAPPROPRIATE_FALLBACK); 1555 goto err; 1556 } 1557 continue; 1558 } 1559 1560 c=ssl_get_cipher_by_char(s,p); 1561 p+=n; 1562 if (c != NULL) 1563 { 1564 if (!sk_SSL_CIPHER_push(sk,c)) 1565 { 1566 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1567 goto err; 1568 } 1569 } 1570 } 1571 1572 if (skp != NULL) 1573 *skp=sk; 1574 return(sk); 1575 err: 1576 if ((skp == NULL) || (*skp == NULL)) 1577 sk_SSL_CIPHER_free(sk); 1578 return(NULL); 1579 } 1580 1581 1582 #ifndef OPENSSL_NO_TLSEXT 1583 /** return a servername extension value if provided in Client Hello, or NULL. 1584 * So far, only host_name types are defined (RFC 3546). 1585 */ 1586 1587 const char *SSL_get_servername(const SSL *s, const int type) 1588 { 1589 if (type != TLSEXT_NAMETYPE_host_name) 1590 return NULL; 1591 1592 return s->session && !s->tlsext_hostname ? 1593 s->session->tlsext_hostname : 1594 s->tlsext_hostname; 1595 } 1596 1597 int SSL_get_servername_type(const SSL *s) 1598 { 1599 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1600 return TLSEXT_NAMETYPE_host_name; 1601 return -1; 1602 } 1603 1604 # ifndef OPENSSL_NO_NEXTPROTONEG 1605 /* SSL_select_next_proto implements the standard protocol selection. It is 1606 * expected that this function is called from the callback set by 1607 * SSL_CTX_set_next_proto_select_cb. 1608 * 1609 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1610 * strings. The length byte itself is not included in the length. A byte 1611 * string of length 0 is invalid. No byte string may be truncated. 1612 * 1613 * The current, but experimental algorithm for selecting the protocol is: 1614 * 1615 * 1) If the server doesn't support NPN then this is indicated to the 1616 * callback. In this case, the client application has to abort the connection 1617 * or have a default application level protocol. 1618 * 1619 * 2) If the server supports NPN, but advertises an empty list then the 1620 * client selects the first protcol in its list, but indicates via the 1621 * API that this fallback case was enacted. 1622 * 1623 * 3) Otherwise, the client finds the first protocol in the server's list 1624 * that it supports and selects this protocol. This is because it's 1625 * assumed that the server has better information about which protocol 1626 * a client should use. 1627 * 1628 * 4) If the client doesn't support any of the server's advertised 1629 * protocols, then this is treated the same as case 2. 1630 * 1631 * It returns either 1632 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1633 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1634 */ 1635 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) 1636 { 1637 unsigned int i, j; 1638 const unsigned char *result; 1639 int status = OPENSSL_NPN_UNSUPPORTED; 1640 1641 /* For each protocol in server preference order, see if we support it. */ 1642 for (i = 0; i < server_len; ) 1643 { 1644 for (j = 0; j < client_len; ) 1645 { 1646 if (server[i] == client[j] && 1647 memcmp(&server[i+1], &client[j+1], server[i]) == 0) 1648 { 1649 /* We found a match */ 1650 result = &server[i]; 1651 status = OPENSSL_NPN_NEGOTIATED; 1652 goto found; 1653 } 1654 j += client[j]; 1655 j++; 1656 } 1657 i += server[i]; 1658 i++; 1659 } 1660 1661 /* There's no overlap between our protocols and the server's list. */ 1662 result = client; 1663 status = OPENSSL_NPN_NO_OVERLAP; 1664 1665 found: 1666 *out = (unsigned char *) result + 1; 1667 *outlen = result[0]; 1668 return status; 1669 } 1670 1671 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1672 * requested protocol for this connection and returns 0. If the client didn't 1673 * request any protocol, then *data is set to NULL. 1674 * 1675 * Note that the client can request any protocol it chooses. The value returned 1676 * from this function need not be a member of the list of supported protocols 1677 * provided by the callback. 1678 */ 1679 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1680 { 1681 *data = s->next_proto_negotiated; 1682 if (!*data) { 1683 *len = 0; 1684 } else { 1685 *len = s->next_proto_negotiated_len; 1686 } 1687 } 1688 1689 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1690 * TLS server needs a list of supported protocols for Next Protocol 1691 * Negotiation. The returned list must be in wire format. The list is returned 1692 * by setting |out| to point to it and |outlen| to its length. This memory will 1693 * not be modified, but one should assume that the SSL* keeps a reference to 1694 * it. 1695 * 1696 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no 1697 * such extension will be included in the ServerHello. */ 1698 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) 1699 { 1700 ctx->next_protos_advertised_cb = cb; 1701 ctx->next_protos_advertised_cb_arg = arg; 1702 } 1703 1704 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1705 * client needs to select a protocol from the server's provided list. |out| 1706 * must be set to point to the selected protocol (which may be within |in|). 1707 * The length of the protocol name must be written into |outlen|. The server's 1708 * advertised protocols are provided in |in| and |inlen|. The callback can 1709 * assume that |in| is syntactically valid. 1710 * 1711 * The client must select a protocol. It is fatal to the connection if this 1712 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1713 */ 1714 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) 1715 { 1716 ctx->next_proto_select_cb = cb; 1717 ctx->next_proto_select_cb_arg = arg; 1718 } 1719 # endif 1720 1721 /* SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. 1722 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1723 * length-prefixed strings). 1724 * 1725 * Returns 0 on success. */ 1726 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char* protos, 1727 unsigned protos_len) 1728 { 1729 if (ctx->alpn_client_proto_list) 1730 OPENSSL_free(ctx->alpn_client_proto_list); 1731 1732 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1733 if (!ctx->alpn_client_proto_list) 1734 return 1; 1735 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1736 ctx->alpn_client_proto_list_len = protos_len; 1737 1738 return 0; 1739 } 1740 1741 /* SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. 1742 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1743 * length-prefixed strings). 1744 * 1745 * Returns 0 on success. */ 1746 int SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1747 unsigned protos_len) 1748 { 1749 if (ssl->alpn_client_proto_list) 1750 OPENSSL_free(ssl->alpn_client_proto_list); 1751 1752 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1753 if (!ssl->alpn_client_proto_list) 1754 return 1; 1755 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1756 ssl->alpn_client_proto_list_len = protos_len; 1757 1758 return 0; 1759 } 1760 1761 /* SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called 1762 * during ClientHello processing in order to select an ALPN protocol from the 1763 * client's list of offered protocols. */ 1764 void SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1765 int (*cb) (SSL *ssl, 1766 const unsigned char **out, 1767 unsigned char *outlen, 1768 const unsigned char *in, 1769 unsigned int inlen, 1770 void *arg), 1771 void *arg) 1772 { 1773 ctx->alpn_select_cb = cb; 1774 ctx->alpn_select_cb_arg = arg; 1775 } 1776 1777 /* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|. 1778 * On return it sets |*data| to point to |*len| bytes of protocol name (not 1779 * including the leading length-prefix byte). If the server didn't respond with 1780 * a negotiated protocol then |*len| will be zero. */ 1781 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1782 unsigned *len) 1783 { 1784 *data = NULL; 1785 if (ssl->s3) 1786 *data = ssl->s3->alpn_selected; 1787 if (*data == NULL) 1788 *len = 0; 1789 else 1790 *len = ssl->s3->alpn_selected_len; 1791 } 1792 #endif 1793 1794 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1795 const char *label, size_t llen, const unsigned char *p, size_t plen, 1796 int use_context) 1797 { 1798 if (s->version < TLS1_VERSION) 1799 return -1; 1800 1801 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1802 llen, p, plen, 1803 use_context); 1804 } 1805 1806 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1807 { 1808 unsigned long l; 1809 1810 l=(unsigned long) 1811 ((unsigned int) a->session_id[0] )| 1812 ((unsigned int) a->session_id[1]<< 8L)| 1813 ((unsigned long)a->session_id[2]<<16L)| 1814 ((unsigned long)a->session_id[3]<<24L); 1815 return(l); 1816 } 1817 1818 /* NB: If this function (or indeed the hash function which uses a sort of 1819 * coarser function than this one) is changed, ensure 1820 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1821 * able to construct an SSL_SESSION that will collide with any existing session 1822 * with a matching session ID. */ 1823 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1824 { 1825 if (a->ssl_version != b->ssl_version) 1826 return(1); 1827 if (a->session_id_length != b->session_id_length) 1828 return(1); 1829 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1830 } 1831 1832 /* These wrapper functions should remain rather than redeclaring 1833 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1834 * variable. The reason is that the functions aren't static, they're exposed via 1835 * ssl.h. */ 1836 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1837 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1838 1839 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1840 { 1841 SSL_CTX *ret=NULL; 1842 1843 if (meth == NULL) 1844 { 1845 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1846 return(NULL); 1847 } 1848 1849 #ifdef OPENSSL_FIPS 1850 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1851 { 1852 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1853 return NULL; 1854 } 1855 #endif 1856 1857 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1858 { 1859 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1860 goto err; 1861 } 1862 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1863 if (ret == NULL) 1864 goto err; 1865 1866 memset(ret,0,sizeof(SSL_CTX)); 1867 1868 ret->method=meth; 1869 1870 ret->cert_store=NULL; 1871 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1872 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1873 ret->session_cache_head=NULL; 1874 ret->session_cache_tail=NULL; 1875 1876 /* We take the system default */ 1877 ret->session_timeout=meth->get_timeout(); 1878 1879 ret->new_session_cb=0; 1880 ret->remove_session_cb=0; 1881 ret->get_session_cb=0; 1882 ret->generate_session_id=0; 1883 1884 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1885 1886 ret->references=1; 1887 ret->quiet_shutdown=0; 1888 1889 /* ret->cipher=NULL;*/ 1890 /* ret->s2->challenge=NULL; 1891 ret->master_key=NULL; 1892 ret->key_arg=NULL; 1893 ret->s2->conn_id=NULL; */ 1894 1895 ret->info_callback=NULL; 1896 1897 ret->app_verify_callback=0; 1898 ret->app_verify_arg=NULL; 1899 1900 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1901 ret->read_ahead=0; 1902 ret->msg_callback=0; 1903 ret->msg_callback_arg=NULL; 1904 ret->verify_mode=SSL_VERIFY_NONE; 1905 #if 0 1906 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1907 #endif 1908 ret->sid_ctx_length=0; 1909 ret->default_verify_callback=NULL; 1910 if ((ret->cert=ssl_cert_new()) == NULL) 1911 goto err; 1912 1913 ret->default_passwd_callback=0; 1914 ret->default_passwd_callback_userdata=NULL; 1915 ret->client_cert_cb=0; 1916 ret->app_gen_cookie_cb=0; 1917 ret->app_verify_cookie_cb=0; 1918 1919 ret->sessions=lh_SSL_SESSION_new(); 1920 if (ret->sessions == NULL) goto err; 1921 ret->cert_store=X509_STORE_new(); 1922 if (ret->cert_store == NULL) goto err; 1923 1924 ssl_create_cipher_list(ret->method, 1925 &ret->cipher_list,&ret->cipher_list_by_id, 1926 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1927 if (ret->cipher_list == NULL 1928 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1929 { 1930 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1931 goto err2; 1932 } 1933 1934 ret->param = X509_VERIFY_PARAM_new(); 1935 if (!ret->param) 1936 goto err; 1937 1938 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1939 { 1940 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1941 goto err2; 1942 } 1943 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1944 { 1945 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1946 goto err2; 1947 } 1948 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1949 { 1950 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1951 goto err2; 1952 } 1953 1954 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1955 goto err; 1956 1957 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1958 1959 ret->extra_certs=NULL; 1960 /* No compression for DTLS */ 1961 if (meth->version != DTLS1_VERSION) 1962 ret->comp_methods=SSL_COMP_get_compression_methods(); 1963 1964 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1965 1966 #ifndef OPENSSL_NO_TLSEXT 1967 ret->tlsext_servername_callback = 0; 1968 ret->tlsext_servername_arg = NULL; 1969 /* Setup RFC4507 ticket keys */ 1970 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1971 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1972 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1973 ret->options |= SSL_OP_NO_TICKET; 1974 1975 ret->tlsext_status_cb = 0; 1976 ret->tlsext_status_arg = NULL; 1977 1978 # ifndef OPENSSL_NO_NEXTPROTONEG 1979 ret->next_protos_advertised_cb = 0; 1980 ret->next_proto_select_cb = 0; 1981 # endif 1982 #endif 1983 #ifndef OPENSSL_NO_PSK 1984 ret->psk_identity_hint=NULL; 1985 ret->psk_client_callback=NULL; 1986 ret->psk_server_callback=NULL; 1987 #endif 1988 #ifndef OPENSSL_NO_SRP 1989 SSL_CTX_SRP_CTX_init(ret); 1990 #endif 1991 #ifndef OPENSSL_NO_BUF_FREELISTS 1992 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1993 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1994 if (!ret->rbuf_freelist) 1995 goto err; 1996 ret->rbuf_freelist->chunklen = 0; 1997 ret->rbuf_freelist->len = 0; 1998 ret->rbuf_freelist->head = NULL; 1999 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2000 if (!ret->wbuf_freelist) 2001 { 2002 OPENSSL_free(ret->rbuf_freelist); 2003 goto err; 2004 } 2005 ret->wbuf_freelist->chunklen = 0; 2006 ret->wbuf_freelist->len = 0; 2007 ret->wbuf_freelist->head = NULL; 2008 #endif 2009 #ifndef OPENSSL_NO_ENGINE 2010 ret->client_cert_engine = NULL; 2011 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2012 #define eng_strx(x) #x 2013 #define eng_str(x) eng_strx(x) 2014 /* Use specific client engine automatically... ignore errors */ 2015 { 2016 ENGINE *eng; 2017 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2018 if (!eng) 2019 { 2020 ERR_clear_error(); 2021 ENGINE_load_builtin_engines(); 2022 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2023 } 2024 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2025 ERR_clear_error(); 2026 } 2027 #endif 2028 #endif 2029 /* Default is to connect to non-RI servers. When RI is more widely 2030 * deployed might change this. 2031 */ 2032 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2033 2034 return(ret); 2035 err: 2036 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 2037 err2: 2038 if (ret != NULL) SSL_CTX_free(ret); 2039 return(NULL); 2040 } 2041 2042 #if 0 2043 static void SSL_COMP_free(SSL_COMP *comp) 2044 { OPENSSL_free(comp); } 2045 #endif 2046 2047 #ifndef OPENSSL_NO_BUF_FREELISTS 2048 static void 2049 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 2050 { 2051 SSL3_BUF_FREELIST_ENTRY *ent, *next; 2052 for (ent = list->head; ent; ent = next) 2053 { 2054 next = ent->next; 2055 OPENSSL_free(ent); 2056 } 2057 OPENSSL_free(list); 2058 } 2059 #endif 2060 2061 void SSL_CTX_free(SSL_CTX *a) 2062 { 2063 int i; 2064 2065 if (a == NULL) return; 2066 2067 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 2068 #ifdef REF_PRINT 2069 REF_PRINT("SSL_CTX",a); 2070 #endif 2071 if (i > 0) return; 2072 #ifdef REF_CHECK 2073 if (i < 0) 2074 { 2075 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 2076 abort(); /* ok */ 2077 } 2078 #endif 2079 2080 if (a->param) 2081 X509_VERIFY_PARAM_free(a->param); 2082 2083 /* 2084 * Free internal session cache. However: the remove_cb() may reference 2085 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2086 * after the sessions were flushed. 2087 * As the ex_data handling routines might also touch the session cache, 2088 * the most secure solution seems to be: empty (flush) the cache, then 2089 * free ex_data, then finally free the cache. 2090 * (See ticket [openssl.org #212].) 2091 */ 2092 if (a->sessions != NULL) 2093 SSL_CTX_flush_sessions(a,0); 2094 2095 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 2096 2097 if (a->sessions != NULL) 2098 lh_SSL_SESSION_free(a->sessions); 2099 2100 if (a->cert_store != NULL) 2101 X509_STORE_free(a->cert_store); 2102 if (a->cipher_list != NULL) 2103 sk_SSL_CIPHER_free(a->cipher_list); 2104 if (a->cipher_list_by_id != NULL) 2105 sk_SSL_CIPHER_free(a->cipher_list_by_id); 2106 if (a->cert != NULL) 2107 ssl_cert_free(a->cert); 2108 if (a->client_CA != NULL) 2109 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 2110 if (a->extra_certs != NULL) 2111 sk_X509_pop_free(a->extra_certs,X509_free); 2112 #if 0 /* This should never be done, since it removes a global database */ 2113 if (a->comp_methods != NULL) 2114 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 2115 #else 2116 a->comp_methods = NULL; 2117 #endif 2118 2119 #ifndef OPENSSL_NO_SRTP 2120 if (a->srtp_profiles) 2121 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 2122 #endif 2123 2124 #ifndef OPENSSL_NO_PSK 2125 if (a->psk_identity_hint) 2126 OPENSSL_free(a->psk_identity_hint); 2127 #endif 2128 #ifndef OPENSSL_NO_SRP 2129 SSL_CTX_SRP_CTX_free(a); 2130 #endif 2131 #ifndef OPENSSL_NO_ENGINE 2132 if (a->client_cert_engine) 2133 ENGINE_finish(a->client_cert_engine); 2134 #endif 2135 2136 #ifndef OPENSSL_NO_BUF_FREELISTS 2137 if (a->wbuf_freelist) 2138 ssl_buf_freelist_free(a->wbuf_freelist); 2139 if (a->rbuf_freelist) 2140 ssl_buf_freelist_free(a->rbuf_freelist); 2141 #endif 2142 2143 #ifndef OPENSSL_NO_TLSEXT 2144 if (a->tlsext_channel_id_private) 2145 EVP_PKEY_free(a->tlsext_channel_id_private); 2146 if (a->alpn_client_proto_list != NULL) 2147 OPENSSL_free(a->alpn_client_proto_list); 2148 #endif 2149 2150 OPENSSL_free(a); 2151 } 2152 2153 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2154 { 2155 ctx->default_passwd_callback=cb; 2156 } 2157 2158 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 2159 { 2160 ctx->default_passwd_callback_userdata=u; 2161 } 2162 2163 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 2164 { 2165 ctx->app_verify_callback=cb; 2166 ctx->app_verify_arg=arg; 2167 } 2168 2169 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 2170 { 2171 ctx->verify_mode=mode; 2172 ctx->default_verify_callback=cb; 2173 } 2174 2175 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 2176 { 2177 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2178 } 2179 2180 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2181 { 2182 CERT_PKEY *cpk; 2183 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 2184 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 2185 int rsa_tmp_export,dh_tmp_export,kl; 2186 unsigned long mask_k,mask_a,emask_k,emask_a; 2187 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2188 #ifndef OPENSSL_NO_ECDH 2189 int have_ecdh_tmp; 2190 #endif 2191 X509 *x = NULL; 2192 EVP_PKEY *ecc_pkey = NULL; 2193 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2194 2195 if (c == NULL) return; 2196 2197 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 2198 2199 #ifndef OPENSSL_NO_RSA 2200 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2201 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 2202 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2203 #else 2204 rsa_tmp=rsa_tmp_export=0; 2205 #endif 2206 #ifndef OPENSSL_NO_DH 2207 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2208 dh_tmp_export=(c->dh_tmp_cb != NULL || 2209 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2210 #else 2211 dh_tmp=dh_tmp_export=0; 2212 #endif 2213 2214 #ifndef OPENSSL_NO_ECDH 2215 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2216 #endif 2217 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 2218 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 2219 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2220 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2221 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2222 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2223 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2224 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 2225 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2226 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2227 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 2228 /* FIX THIS EAY EAY EAY */ 2229 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2230 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2231 cpk= &(c->pkeys[SSL_PKEY_ECC]); 2232 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 2233 mask_k=0; 2234 mask_a=0; 2235 emask_k=0; 2236 emask_a=0; 2237 2238 2239 2240 #ifdef CIPHER_DEBUG 2241 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2242 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 2243 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 2244 #endif 2245 2246 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2247 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2248 mask_k |= SSL_kGOST; 2249 mask_a |= SSL_aGOST01; 2250 } 2251 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2252 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2253 mask_k |= SSL_kGOST; 2254 mask_a |= SSL_aGOST94; 2255 } 2256 2257 if (rsa_enc || (rsa_tmp && rsa_sign)) 2258 mask_k|=SSL_kRSA; 2259 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2260 emask_k|=SSL_kRSA; 2261 2262 #if 0 2263 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2264 if ( (dh_tmp || dh_rsa || dh_dsa) && 2265 (rsa_enc || rsa_sign || dsa_sign)) 2266 mask_k|=SSL_kEDH; 2267 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2268 (rsa_enc || rsa_sign || dsa_sign)) 2269 emask_k|=SSL_kEDH; 2270 #endif 2271 2272 if (dh_tmp_export) 2273 emask_k|=SSL_kEDH; 2274 2275 if (dh_tmp) 2276 mask_k|=SSL_kEDH; 2277 2278 if (dh_rsa) mask_k|=SSL_kDHr; 2279 if (dh_rsa_export) emask_k|=SSL_kDHr; 2280 2281 if (dh_dsa) mask_k|=SSL_kDHd; 2282 if (dh_dsa_export) emask_k|=SSL_kDHd; 2283 2284 if (rsa_enc || rsa_sign) 2285 { 2286 mask_a|=SSL_aRSA; 2287 emask_a|=SSL_aRSA; 2288 } 2289 2290 if (dsa_sign) 2291 { 2292 mask_a|=SSL_aDSS; 2293 emask_a|=SSL_aDSS; 2294 } 2295 2296 mask_a|=SSL_aNULL; 2297 emask_a|=SSL_aNULL; 2298 2299 #ifndef OPENSSL_NO_KRB5 2300 mask_k|=SSL_kKRB5; 2301 mask_a|=SSL_aKRB5; 2302 emask_k|=SSL_kKRB5; 2303 emask_a|=SSL_aKRB5; 2304 #endif 2305 2306 /* An ECC certificate may be usable for ECDH and/or 2307 * ECDSA cipher suites depending on the key usage extension. 2308 */ 2309 if (have_ecc_cert) 2310 { 2311 /* This call populates extension flags (ex_flags) */ 2312 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2313 X509_check_purpose(x, -1, 0); 2314 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2315 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2316 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2317 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2318 ecc_pkey = X509_get_pubkey(x); 2319 ecc_pkey_size = (ecc_pkey != NULL) ? 2320 EVP_PKEY_bits(ecc_pkey) : 0; 2321 EVP_PKEY_free(ecc_pkey); 2322 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2323 { 2324 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2325 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2326 } 2327 #ifndef OPENSSL_NO_ECDH 2328 if (ecdh_ok) 2329 { 2330 2331 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) 2332 { 2333 mask_k|=SSL_kECDHr; 2334 mask_a|=SSL_aECDH; 2335 if (ecc_pkey_size <= 163) 2336 { 2337 emask_k|=SSL_kECDHr; 2338 emask_a|=SSL_aECDH; 2339 } 2340 } 2341 2342 if (pk_nid == NID_X9_62_id_ecPublicKey) 2343 { 2344 mask_k|=SSL_kECDHe; 2345 mask_a|=SSL_aECDH; 2346 if (ecc_pkey_size <= 163) 2347 { 2348 emask_k|=SSL_kECDHe; 2349 emask_a|=SSL_aECDH; 2350 } 2351 } 2352 } 2353 #endif 2354 #ifndef OPENSSL_NO_ECDSA 2355 if (ecdsa_ok) 2356 { 2357 mask_a|=SSL_aECDSA; 2358 emask_a|=SSL_aECDSA; 2359 } 2360 #endif 2361 } 2362 2363 #ifndef OPENSSL_NO_ECDH 2364 if (have_ecdh_tmp) 2365 { 2366 mask_k|=SSL_kEECDH; 2367 emask_k|=SSL_kEECDH; 2368 } 2369 #endif 2370 2371 #ifndef OPENSSL_NO_PSK 2372 mask_k |= SSL_kPSK; 2373 mask_a |= SSL_aPSK; 2374 emask_k |= SSL_kPSK; 2375 emask_a |= SSL_aPSK; 2376 #endif 2377 2378 c->mask_k=mask_k; 2379 c->mask_a=mask_a; 2380 c->export_mask_k=emask_k; 2381 c->export_mask_a=emask_a; 2382 c->valid=1; 2383 } 2384 2385 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2386 #define ku_reject(x, usage) \ 2387 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2388 2389 #ifndef OPENSSL_NO_EC 2390 2391 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2392 { 2393 unsigned long alg_k, alg_a; 2394 EVP_PKEY *pkey = NULL; 2395 int keysize = 0; 2396 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2397 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2398 2399 alg_k = cs->algorithm_mkey; 2400 alg_a = cs->algorithm_auth; 2401 2402 if (SSL_C_IS_EXPORT(cs)) 2403 { 2404 /* ECDH key length in export ciphers must be <= 163 bits */ 2405 pkey = X509_get_pubkey(x); 2406 if (pkey == NULL) return 0; 2407 keysize = EVP_PKEY_bits(pkey); 2408 EVP_PKEY_free(pkey); 2409 if (keysize > 163) return 0; 2410 } 2411 2412 /* This call populates the ex_flags field correctly */ 2413 X509_check_purpose(x, -1, 0); 2414 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2415 { 2416 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2417 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2418 } 2419 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2420 { 2421 /* key usage, if present, must allow key agreement */ 2422 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2423 { 2424 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2425 return 0; 2426 } 2427 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) 2428 { 2429 /* signature alg must be ECDSA */ 2430 if (pk_nid != NID_X9_62_id_ecPublicKey) 2431 { 2432 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2433 return 0; 2434 } 2435 } 2436 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) 2437 { 2438 /* signature alg must be RSA */ 2439 2440 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) 2441 { 2442 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2443 return 0; 2444 } 2445 } 2446 } 2447 if (alg_a & SSL_aECDSA) 2448 { 2449 /* key usage, if present, must allow signing */ 2450 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2451 { 2452 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2453 return 0; 2454 } 2455 } 2456 2457 return 1; /* all checks are ok */ 2458 } 2459 2460 #endif 2461 2462 /* THIS NEEDS CLEANING UP */ 2463 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2464 { 2465 unsigned long alg_k,alg_a; 2466 CERT *c; 2467 int i; 2468 2469 c=s->cert; 2470 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2471 2472 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2473 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2474 2475 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2476 { 2477 /* we don't need to look at SSL_kEECDH 2478 * since no certificate is needed for 2479 * anon ECDH and for authenticated 2480 * EECDH, the check for the auth 2481 * algorithm will set i correctly 2482 * NOTE: For ECDH-RSA, we need an ECC 2483 * not an RSA cert but for EECDH-RSA 2484 * we need an RSA cert. Placing the 2485 * checks for SSL_kECDH before RSA 2486 * checks ensures the correct cert is chosen. 2487 */ 2488 i=SSL_PKEY_ECC; 2489 } 2490 else if (alg_a & SSL_aECDSA) 2491 { 2492 i=SSL_PKEY_ECC; 2493 } 2494 else if (alg_k & SSL_kDHr) 2495 i=SSL_PKEY_DH_RSA; 2496 else if (alg_k & SSL_kDHd) 2497 i=SSL_PKEY_DH_DSA; 2498 else if (alg_a & SSL_aDSS) 2499 i=SSL_PKEY_DSA_SIGN; 2500 else if (alg_a & SSL_aRSA) 2501 { 2502 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2503 i=SSL_PKEY_RSA_SIGN; 2504 else 2505 i=SSL_PKEY_RSA_ENC; 2506 } 2507 else if (alg_a & SSL_aKRB5) 2508 { 2509 /* VRS something else here? */ 2510 return(NULL); 2511 } 2512 else if (alg_a & SSL_aGOST94) 2513 i=SSL_PKEY_GOST94; 2514 else if (alg_a & SSL_aGOST01) 2515 i=SSL_PKEY_GOST01; 2516 else /* if (alg_a & SSL_aNULL) */ 2517 { 2518 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR); 2519 return(NULL); 2520 } 2521 2522 return c->pkeys + i; 2523 } 2524 2525 X509 *ssl_get_server_send_cert(const SSL *s) 2526 { 2527 CERT_PKEY *cpk; 2528 cpk = ssl_get_server_send_pkey(s); 2529 if (!cpk) 2530 return NULL; 2531 return cpk->x509; 2532 } 2533 2534 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd) 2535 { 2536 unsigned long alg_a; 2537 CERT *c; 2538 2539 alg_a = cipher->algorithm_auth; 2540 c=s->cert; 2541 2542 /* SHA1 is the default for all signature algorithms up to TLS 1.2, 2543 * except RSA which is handled specially in s3_srvr.c */ 2544 if (pmd) 2545 *pmd = EVP_sha1(); 2546 2547 if ((alg_a & SSL_aDSS) && 2548 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2549 { 2550 if (pmd && s->s3 && s->s3->digest_dsa) 2551 *pmd = s->s3->digest_dsa; 2552 return c->pkeys[SSL_PKEY_DSA_SIGN].privatekey; 2553 } 2554 else if (alg_a & SSL_aRSA) 2555 { 2556 if (pmd && s->s3 && s->s3->digest_rsa) 2557 *pmd = s->s3->digest_rsa; 2558 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2559 return c->pkeys[SSL_PKEY_RSA_SIGN].privatekey; 2560 if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2561 return c->pkeys[SSL_PKEY_RSA_ENC].privatekey; 2562 } 2563 else if ((alg_a & SSL_aECDSA) && 2564 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2565 { 2566 if (pmd && s->s3 && s->s3->digest_ecdsa) 2567 *pmd = s->s3->digest_ecdsa; 2568 return c->pkeys[SSL_PKEY_ECC].privatekey; 2569 } 2570 2571 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2572 return(NULL); 2573 } 2574 2575 void ssl_update_cache(SSL *s,int mode) 2576 { 2577 int i; 2578 2579 /* If the session_id_length is 0, we are not supposed to cache it, 2580 * and it would be rather hard to do anyway :-) */ 2581 if (s->session->session_id_length == 0) return; 2582 2583 i=s->session_ctx->session_cache_mode; 2584 if ((i & mode) && (!s->hit) 2585 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2586 || SSL_CTX_add_session(s->session_ctx,s->session)) 2587 && (s->session_ctx->new_session_cb != NULL)) 2588 { 2589 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2590 if (!s->session_ctx->new_session_cb(s,s->session)) 2591 SSL_SESSION_free(s->session); 2592 } 2593 2594 /* auto flush every 255 connections */ 2595 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2596 ((i & mode) == mode)) 2597 { 2598 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2599 ?s->session_ctx->stats.sess_connect_good 2600 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2601 { 2602 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2603 } 2604 } 2605 } 2606 2607 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2608 { 2609 return(s->method); 2610 } 2611 2612 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2613 { 2614 int conn= -1; 2615 int ret=1; 2616 2617 if (s->method != meth) 2618 { 2619 if (s->handshake_func != NULL) 2620 conn=(s->handshake_func == s->method->ssl_connect); 2621 2622 if (s->method->version == meth->version) 2623 s->method=meth; 2624 else 2625 { 2626 s->method->ssl_free(s); 2627 s->method=meth; 2628 ret=s->method->ssl_new(s); 2629 } 2630 2631 if (conn == 1) 2632 s->handshake_func=meth->ssl_connect; 2633 else if (conn == 0) 2634 s->handshake_func=meth->ssl_accept; 2635 } 2636 return(ret); 2637 } 2638 2639 int SSL_get_error(const SSL *s,int i) 2640 { 2641 int reason; 2642 unsigned long l; 2643 BIO *bio; 2644 2645 if (i > 0) return(SSL_ERROR_NONE); 2646 2647 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2648 * etc, where we do encode the error */ 2649 if ((l=ERR_peek_error()) != 0) 2650 { 2651 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2652 return(SSL_ERROR_SYSCALL); 2653 else 2654 return(SSL_ERROR_SSL); 2655 } 2656 2657 if ((i < 0) && SSL_want_read(s)) 2658 { 2659 bio=SSL_get_rbio(s); 2660 if (BIO_should_read(bio)) 2661 return(SSL_ERROR_WANT_READ); 2662 else if (BIO_should_write(bio)) 2663 /* This one doesn't make too much sense ... We never try 2664 * to write to the rbio, and an application program where 2665 * rbio and wbio are separate couldn't even know what it 2666 * should wait for. 2667 * However if we ever set s->rwstate incorrectly 2668 * (so that we have SSL_want_read(s) instead of 2669 * SSL_want_write(s)) and rbio and wbio *are* the same, 2670 * this test works around that bug; so it might be safer 2671 * to keep it. */ 2672 return(SSL_ERROR_WANT_WRITE); 2673 else if (BIO_should_io_special(bio)) 2674 { 2675 reason=BIO_get_retry_reason(bio); 2676 if (reason == BIO_RR_CONNECT) 2677 return(SSL_ERROR_WANT_CONNECT); 2678 else if (reason == BIO_RR_ACCEPT) 2679 return(SSL_ERROR_WANT_ACCEPT); 2680 else 2681 return(SSL_ERROR_SYSCALL); /* unknown */ 2682 } 2683 } 2684 2685 if ((i < 0) && SSL_want_write(s)) 2686 { 2687 bio=SSL_get_wbio(s); 2688 if (BIO_should_write(bio)) 2689 return(SSL_ERROR_WANT_WRITE); 2690 else if (BIO_should_read(bio)) 2691 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2692 return(SSL_ERROR_WANT_READ); 2693 else if (BIO_should_io_special(bio)) 2694 { 2695 reason=BIO_get_retry_reason(bio); 2696 if (reason == BIO_RR_CONNECT) 2697 return(SSL_ERROR_WANT_CONNECT); 2698 else if (reason == BIO_RR_ACCEPT) 2699 return(SSL_ERROR_WANT_ACCEPT); 2700 else 2701 return(SSL_ERROR_SYSCALL); 2702 } 2703 } 2704 if ((i < 0) && SSL_want_x509_lookup(s)) 2705 { 2706 return(SSL_ERROR_WANT_X509_LOOKUP); 2707 } 2708 if ((i < 0) && SSL_want_channel_id_lookup(s)) 2709 { 2710 return(SSL_ERROR_WANT_CHANNEL_ID_LOOKUP); 2711 } 2712 2713 if (i == 0) 2714 { 2715 if (s->version == SSL2_VERSION) 2716 { 2717 /* assume it is the socket being closed */ 2718 return(SSL_ERROR_ZERO_RETURN); 2719 } 2720 else 2721 { 2722 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2723 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2724 return(SSL_ERROR_ZERO_RETURN); 2725 } 2726 } 2727 return(SSL_ERROR_SYSCALL); 2728 } 2729 2730 int SSL_do_handshake(SSL *s) 2731 { 2732 int ret=1; 2733 2734 if (s->handshake_func == NULL) 2735 { 2736 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2737 return(-1); 2738 } 2739 2740 s->method->ssl_renegotiate_check(s); 2741 2742 if (SSL_in_init(s) || SSL_in_before(s)) 2743 { 2744 ret=s->handshake_func(s); 2745 } 2746 return(ret); 2747 } 2748 2749 /* For the next 2 functions, SSL_clear() sets shutdown and so 2750 * one of these calls will reset it */ 2751 void SSL_set_accept_state(SSL *s) 2752 { 2753 s->server=1; 2754 s->shutdown=0; 2755 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2756 s->handshake_func=s->method->ssl_accept; 2757 /* clear the current cipher */ 2758 ssl_clear_cipher_ctx(s); 2759 ssl_clear_hash_ctx(&s->read_hash); 2760 ssl_clear_hash_ctx(&s->write_hash); 2761 } 2762 2763 void SSL_set_connect_state(SSL *s) 2764 { 2765 s->server=0; 2766 s->shutdown=0; 2767 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2768 s->handshake_func=s->method->ssl_connect; 2769 /* clear the current cipher */ 2770 ssl_clear_cipher_ctx(s); 2771 ssl_clear_hash_ctx(&s->read_hash); 2772 ssl_clear_hash_ctx(&s->write_hash); 2773 } 2774 2775 int ssl_undefined_function(SSL *s) 2776 { 2777 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2778 return(0); 2779 } 2780 2781 int ssl_undefined_void_function(void) 2782 { 2783 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2784 return(0); 2785 } 2786 2787 int ssl_undefined_const_function(const SSL *s) 2788 { 2789 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2790 return(0); 2791 } 2792 2793 SSL_METHOD *ssl_bad_method(int ver) 2794 { 2795 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2796 return(NULL); 2797 } 2798 2799 static const char *ssl_get_version(int version) 2800 { 2801 if (version == TLS1_2_VERSION) 2802 return("TLSv1.2"); 2803 else if (version == TLS1_1_VERSION) 2804 return("TLSv1.1"); 2805 else if (version == TLS1_VERSION) 2806 return("TLSv1"); 2807 else if (version == SSL3_VERSION) 2808 return("SSLv3"); 2809 else if (version == SSL2_VERSION) 2810 return("SSLv2"); 2811 else 2812 return("unknown"); 2813 } 2814 2815 const char *SSL_get_version(const SSL *s) 2816 { 2817 return ssl_get_version(s->version); 2818 } 2819 2820 const char *SSL_SESSION_get_version(const SSL_SESSION *s) 2821 { 2822 return ssl_get_version(s->ssl_version); 2823 } 2824 2825 const char* SSL_authentication_method(const SSL* ssl) 2826 { 2827 if (ssl->cert != NULL && ssl->cert->rsa_tmp != NULL) 2828 return SSL_TXT_RSA "_" SSL_TXT_EXPORT; 2829 switch (ssl->version) 2830 { 2831 case SSL2_VERSION: 2832 return SSL_TXT_RSA; 2833 default: 2834 return SSL_CIPHER_authentication_method(ssl->s3->tmp.new_cipher); 2835 } 2836 } 2837 2838 SSL *SSL_dup(SSL *s) 2839 { 2840 STACK_OF(X509_NAME) *sk; 2841 X509_NAME *xn; 2842 SSL *ret; 2843 int i; 2844 2845 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2846 return(NULL); 2847 2848 ret->version = s->version; 2849 ret->type = s->type; 2850 ret->method = s->method; 2851 2852 if (s->session != NULL) 2853 { 2854 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2855 SSL_copy_session_id(ret,s); 2856 } 2857 else 2858 { 2859 /* No session has been established yet, so we have to expect 2860 * that s->cert or ret->cert will be changed later -- 2861 * they should not both point to the same object, 2862 * and thus we can't use SSL_copy_session_id. */ 2863 2864 ret->method->ssl_free(ret); 2865 ret->method = s->method; 2866 ret->method->ssl_new(ret); 2867 2868 if (s->cert != NULL) 2869 { 2870 if (ret->cert != NULL) 2871 { 2872 ssl_cert_free(ret->cert); 2873 } 2874 ret->cert = ssl_cert_dup(s->cert); 2875 if (ret->cert == NULL) 2876 goto err; 2877 } 2878 2879 SSL_set_session_id_context(ret, 2880 s->sid_ctx, s->sid_ctx_length); 2881 } 2882 2883 ret->options=s->options; 2884 ret->mode=s->mode; 2885 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2886 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2887 ret->msg_callback = s->msg_callback; 2888 ret->msg_callback_arg = s->msg_callback_arg; 2889 SSL_set_verify(ret,SSL_get_verify_mode(s), 2890 SSL_get_verify_callback(s)); 2891 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2892 ret->generate_session_id = s->generate_session_id; 2893 2894 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2895 2896 ret->debug=s->debug; 2897 2898 /* copy app data, a little dangerous perhaps */ 2899 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2900 goto err; 2901 2902 /* setup rbio, and wbio */ 2903 if (s->rbio != NULL) 2904 { 2905 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2906 goto err; 2907 } 2908 if (s->wbio != NULL) 2909 { 2910 if (s->wbio != s->rbio) 2911 { 2912 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2913 goto err; 2914 } 2915 else 2916 ret->wbio=ret->rbio; 2917 } 2918 ret->rwstate = s->rwstate; 2919 ret->in_handshake = s->in_handshake; 2920 ret->handshake_func = s->handshake_func; 2921 ret->server = s->server; 2922 ret->renegotiate = s->renegotiate; 2923 ret->new_session = s->new_session; 2924 ret->quiet_shutdown = s->quiet_shutdown; 2925 ret->shutdown=s->shutdown; 2926 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2927 ret->rstate=s->rstate; 2928 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2929 ret->hit=s->hit; 2930 2931 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2932 2933 /* dup the cipher_list and cipher_list_by_id stacks */ 2934 if (s->cipher_list != NULL) 2935 { 2936 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2937 goto err; 2938 } 2939 if (s->cipher_list_by_id != NULL) 2940 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2941 == NULL) 2942 goto err; 2943 2944 /* Dup the client_CA list */ 2945 if (s->client_CA != NULL) 2946 { 2947 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2948 ret->client_CA=sk; 2949 for (i=0; i<sk_X509_NAME_num(sk); i++) 2950 { 2951 xn=sk_X509_NAME_value(sk,i); 2952 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2953 { 2954 X509_NAME_free(xn); 2955 goto err; 2956 } 2957 } 2958 } 2959 2960 if (0) 2961 { 2962 err: 2963 if (ret != NULL) SSL_free(ret); 2964 ret=NULL; 2965 } 2966 return(ret); 2967 } 2968 2969 void ssl_clear_cipher_ctx(SSL *s) 2970 { 2971 if (s->enc_read_ctx != NULL) 2972 { 2973 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2974 OPENSSL_free(s->enc_read_ctx); 2975 s->enc_read_ctx=NULL; 2976 } 2977 if (s->enc_write_ctx != NULL) 2978 { 2979 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2980 OPENSSL_free(s->enc_write_ctx); 2981 s->enc_write_ctx=NULL; 2982 } 2983 #ifndef OPENSSL_NO_COMP 2984 if (s->expand != NULL) 2985 { 2986 COMP_CTX_free(s->expand); 2987 s->expand=NULL; 2988 } 2989 if (s->compress != NULL) 2990 { 2991 COMP_CTX_free(s->compress); 2992 s->compress=NULL; 2993 } 2994 #endif 2995 } 2996 2997 /* Fix this function so that it takes an optional type parameter */ 2998 X509 *SSL_get_certificate(const SSL *s) 2999 { 3000 if (s->cert != NULL) 3001 return(s->cert->key->x509); 3002 else 3003 return(NULL); 3004 } 3005 3006 /* Fix this function so that it takes an optional type parameter */ 3007 EVP_PKEY *SSL_get_privatekey(SSL *s) 3008 { 3009 if (s->cert != NULL) 3010 return(s->cert->key->privatekey); 3011 else 3012 return(NULL); 3013 } 3014 3015 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 3016 { 3017 if ((s->session != NULL) && (s->session->cipher != NULL)) 3018 return(s->session->cipher); 3019 return(NULL); 3020 } 3021 #ifdef OPENSSL_NO_COMP 3022 const void *SSL_get_current_compression(SSL *s) 3023 { 3024 return NULL; 3025 } 3026 const void *SSL_get_current_expansion(SSL *s) 3027 { 3028 return NULL; 3029 } 3030 #else 3031 3032 const COMP_METHOD *SSL_get_current_compression(SSL *s) 3033 { 3034 if (s->compress != NULL) 3035 return(s->compress->meth); 3036 return(NULL); 3037 } 3038 3039 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 3040 { 3041 if (s->expand != NULL) 3042 return(s->expand->meth); 3043 return(NULL); 3044 } 3045 #endif 3046 3047 int ssl_init_wbio_buffer(SSL *s,int push) 3048 { 3049 BIO *bbio; 3050 3051 if (s->bbio == NULL) 3052 { 3053 bbio=BIO_new(BIO_f_buffer()); 3054 if (bbio == NULL) return(0); 3055 s->bbio=bbio; 3056 } 3057 else 3058 { 3059 bbio=s->bbio; 3060 if (s->bbio == s->wbio) 3061 s->wbio=BIO_pop(s->wbio); 3062 } 3063 (void)BIO_reset(bbio); 3064 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3065 if (!BIO_set_read_buffer_size(bbio,1)) 3066 { 3067 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 3068 return(0); 3069 } 3070 if (push) 3071 { 3072 if (s->wbio != bbio) 3073 s->wbio=BIO_push(bbio,s->wbio); 3074 } 3075 else 3076 { 3077 if (s->wbio == bbio) 3078 s->wbio=BIO_pop(bbio); 3079 } 3080 return(1); 3081 } 3082 3083 void ssl_free_wbio_buffer(SSL *s) 3084 { 3085 if (s->bbio == NULL) return; 3086 3087 if (s->bbio == s->wbio) 3088 { 3089 /* remove buffering */ 3090 s->wbio=BIO_pop(s->wbio); 3091 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 3092 assert(s->wbio != NULL); 3093 #endif 3094 } 3095 BIO_free(s->bbio); 3096 s->bbio=NULL; 3097 } 3098 3099 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 3100 { 3101 ctx->quiet_shutdown=mode; 3102 } 3103 3104 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3105 { 3106 return(ctx->quiet_shutdown); 3107 } 3108 3109 void SSL_set_quiet_shutdown(SSL *s,int mode) 3110 { 3111 s->quiet_shutdown=mode; 3112 } 3113 3114 int SSL_get_quiet_shutdown(const SSL *s) 3115 { 3116 return(s->quiet_shutdown); 3117 } 3118 3119 void SSL_set_shutdown(SSL *s,int mode) 3120 { 3121 s->shutdown=mode; 3122 } 3123 3124 int SSL_get_shutdown(const SSL *s) 3125 { 3126 return(s->shutdown); 3127 } 3128 3129 int SSL_version(const SSL *s) 3130 { 3131 return(s->version); 3132 } 3133 3134 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 3135 { 3136 return(ssl->ctx); 3137 } 3138 3139 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 3140 { 3141 if (ssl->ctx == ctx) 3142 return ssl->ctx; 3143 #ifndef OPENSSL_NO_TLSEXT 3144 if (ctx == NULL) 3145 ctx = ssl->initial_ctx; 3146 #endif 3147 if (ssl->cert != NULL) 3148 ssl_cert_free(ssl->cert); 3149 ssl->cert = ssl_cert_dup(ctx->cert); 3150 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 3151 if (ssl->ctx != NULL) 3152 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3153 ssl->ctx = ctx; 3154 return(ssl->ctx); 3155 } 3156 3157 #ifndef OPENSSL_NO_STDIO 3158 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3159 { 3160 return(X509_STORE_set_default_paths(ctx->cert_store)); 3161 } 3162 3163 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3164 const char *CApath) 3165 { 3166 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 3167 } 3168 #endif 3169 3170 void SSL_set_info_callback(SSL *ssl, 3171 void (*cb)(const SSL *ssl,int type,int val)) 3172 { 3173 ssl->info_callback=cb; 3174 } 3175 3176 /* One compiler (Diab DCC) doesn't like argument names in returned 3177 function pointer. */ 3178 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 3179 { 3180 return ssl->info_callback; 3181 } 3182 3183 int SSL_state(const SSL *ssl) 3184 { 3185 return(ssl->state); 3186 } 3187 3188 void SSL_set_state(SSL *ssl, int state) 3189 { 3190 ssl->state = state; 3191 } 3192 3193 void SSL_set_verify_result(SSL *ssl,long arg) 3194 { 3195 ssl->verify_result=arg; 3196 } 3197 3198 long SSL_get_verify_result(const SSL *ssl) 3199 { 3200 return(ssl->verify_result); 3201 } 3202 3203 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3204 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3205 { 3206 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3207 new_func, dup_func, free_func); 3208 } 3209 3210 int SSL_set_ex_data(SSL *s,int idx,void *arg) 3211 { 3212 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3213 } 3214 3215 void *SSL_get_ex_data(const SSL *s,int idx) 3216 { 3217 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3218 } 3219 3220 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3221 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3222 { 3223 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3224 new_func, dup_func, free_func); 3225 } 3226 3227 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 3228 { 3229 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3230 } 3231 3232 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 3233 { 3234 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3235 } 3236 3237 int ssl_ok(SSL *s) 3238 { 3239 return(1); 3240 } 3241 3242 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3243 { 3244 return(ctx->cert_store); 3245 } 3246 3247 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 3248 { 3249 if (ctx->cert_store != NULL) 3250 X509_STORE_free(ctx->cert_store); 3251 ctx->cert_store=store; 3252 } 3253 3254 int SSL_want(const SSL *s) 3255 { 3256 return(s->rwstate); 3257 } 3258 3259 /*! 3260 * \brief Set the callback for generating temporary RSA keys. 3261 * \param ctx the SSL context. 3262 * \param cb the callback 3263 */ 3264 3265 #ifndef OPENSSL_NO_RSA 3266 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 3267 int is_export, 3268 int keylength)) 3269 { 3270 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3271 } 3272 3273 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 3274 int is_export, 3275 int keylength)) 3276 { 3277 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3278 } 3279 #endif 3280 3281 #ifdef DOXYGEN 3282 /*! 3283 * \brief The RSA temporary key callback function. 3284 * \param ssl the SSL session. 3285 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3286 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3287 * of the required key in bits. 3288 * \return the temporary RSA key. 3289 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3290 */ 3291 3292 RSA *cb(SSL *ssl,int is_export,int keylength) 3293 {} 3294 #endif 3295 3296 /*! 3297 * \brief Set the callback for generating temporary DH keys. 3298 * \param ctx the SSL context. 3299 * \param dh the callback 3300 */ 3301 3302 #ifndef OPENSSL_NO_DH 3303 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 3304 int keylength)) 3305 { 3306 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3307 } 3308 3309 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 3310 int keylength)) 3311 { 3312 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3313 } 3314 #endif 3315 3316 #ifndef OPENSSL_NO_ECDH 3317 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3318 int keylength)) 3319 { 3320 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3321 } 3322 3323 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3324 int keylength)) 3325 { 3326 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3327 } 3328 #endif 3329 3330 #ifndef OPENSSL_NO_PSK 3331 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3332 { 3333 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3334 { 3335 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3336 return 0; 3337 } 3338 if (ctx->psk_identity_hint != NULL) 3339 OPENSSL_free(ctx->psk_identity_hint); 3340 if (identity_hint != NULL) 3341 { 3342 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3343 if (ctx->psk_identity_hint == NULL) 3344 return 0; 3345 } 3346 else 3347 ctx->psk_identity_hint = NULL; 3348 return 1; 3349 } 3350 3351 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3352 { 3353 if (s == NULL) 3354 return 0; 3355 3356 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3357 { 3358 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3359 return 0; 3360 } 3361 3362 /* Clear hint in SSL and associated SSL_SESSION (if any). */ 3363 if (s->psk_identity_hint != NULL) 3364 { 3365 OPENSSL_free(s->psk_identity_hint); 3366 s->psk_identity_hint = NULL; 3367 } 3368 if (s->session != NULL && s->session->psk_identity_hint != NULL) 3369 { 3370 OPENSSL_free(s->session->psk_identity_hint); 3371 s->session->psk_identity_hint = NULL; 3372 } 3373 3374 if (identity_hint != NULL) 3375 { 3376 /* The hint is stored in SSL and SSL_SESSION with the one in 3377 * SSL_SESSION taking precedence. Thus, if SSL_SESSION is avaiable, 3378 * we store the hint there, otherwise we store it in SSL. */ 3379 if (s->session != NULL) 3380 { 3381 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3382 if (s->session->psk_identity_hint == NULL) 3383 return 0; 3384 } 3385 else 3386 { 3387 s->psk_identity_hint = BUF_strdup(identity_hint); 3388 if (s->psk_identity_hint == NULL) 3389 return 0; 3390 } 3391 } 3392 return 1; 3393 } 3394 3395 const char *SSL_get_psk_identity_hint(const SSL *s) 3396 { 3397 if (s == NULL) 3398 return NULL; 3399 /* The hint is stored in SSL and SSL_SESSION with the one in SSL_SESSION 3400 * taking precedence. */ 3401 if (s->session != NULL) 3402 return(s->session->psk_identity_hint); 3403 return(s->psk_identity_hint); 3404 } 3405 3406 const char *SSL_get_psk_identity(const SSL *s) 3407 { 3408 if (s == NULL || s->session == NULL) 3409 return NULL; 3410 return(s->session->psk_identity); 3411 } 3412 3413 void SSL_set_psk_client_callback(SSL *s, 3414 unsigned int (*cb)(SSL *ssl, const char *hint, 3415 char *identity, unsigned int max_identity_len, unsigned char *psk, 3416 unsigned int max_psk_len)) 3417 { 3418 s->psk_client_callback = cb; 3419 } 3420 3421 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3422 unsigned int (*cb)(SSL *ssl, const char *hint, 3423 char *identity, unsigned int max_identity_len, unsigned char *psk, 3424 unsigned int max_psk_len)) 3425 { 3426 ctx->psk_client_callback = cb; 3427 } 3428 3429 void SSL_set_psk_server_callback(SSL *s, 3430 unsigned int (*cb)(SSL *ssl, const char *identity, 3431 unsigned char *psk, unsigned int max_psk_len)) 3432 { 3433 s->psk_server_callback = cb; 3434 } 3435 3436 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3437 unsigned int (*cb)(SSL *ssl, const char *identity, 3438 unsigned char *psk, unsigned int max_psk_len)) 3439 { 3440 ctx->psk_server_callback = cb; 3441 } 3442 #endif 3443 3444 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)) 3445 { 3446 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3447 } 3448 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)) 3449 { 3450 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3451 } 3452 3453 int SSL_cutthrough_complete(const SSL *s) 3454 { 3455 return (!s->server && /* cutthrough only applies to clients */ 3456 !s->hit && /* full-handshake */ 3457 s->version >= SSL3_VERSION && 3458 s->s3->in_read_app_data == 0 && /* cutthrough only applies to write() */ 3459 (SSL_get_mode((SSL*)s) & SSL_MODE_HANDSHAKE_CUTTHROUGH) && /* cutthrough enabled */ 3460 ssl3_can_cutthrough(s) && /* cutthrough allowed */ 3461 s->s3->previous_server_finished_len == 0 && /* not a renegotiation handshake */ 3462 (s->state == SSL3_ST_CR_SESSION_TICKET_A || /* ready to write app-data*/ 3463 s->state == SSL3_ST_CR_FINISHED_A)); 3464 } 3465 3466 int ssl3_can_cutthrough(const SSL *s) 3467 { 3468 const SSL_CIPHER *c; 3469 3470 /* require a strong enough cipher */ 3471 if (SSL_get_cipher_bits(s, NULL) < 128) 3472 return 0; 3473 3474 /* require ALPN or NPN extension */ 3475 if (!s->s3->alpn_selected 3476 #ifndef OPENSSL_NO_NEXTPROTONEG 3477 && !s->s3->next_proto_neg_seen 3478 #endif 3479 ) 3480 { 3481 return 0; 3482 } 3483 3484 /* require a forward-secret cipher */ 3485 c = SSL_get_current_cipher(s); 3486 if (!c || (c->algorithm_mkey != SSL_kEDH && 3487 c->algorithm_mkey != SSL_kEECDH)) 3488 { 3489 return 0; 3490 } 3491 3492 return 1; 3493 } 3494 3495 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3496 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3497 * any. If EVP_MD pointer is passed, initializes ctx with this md 3498 * Returns newly allocated ctx; 3499 */ 3500 3501 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3502 { 3503 ssl_clear_hash_ctx(hash); 3504 *hash = EVP_MD_CTX_create(); 3505 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3506 return *hash; 3507 } 3508 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3509 { 3510 3511 if (*hash) EVP_MD_CTX_destroy(*hash); 3512 *hash=NULL; 3513 } 3514 3515 void SSL_set_debug(SSL *s, int debug) 3516 { 3517 s->debug = debug; 3518 } 3519 3520 int SSL_cache_hit(SSL *s) 3521 { 3522 return s->hit; 3523 } 3524 3525 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3526 #include "../crypto/bio/bss_file.c" 3527 #endif 3528 3529 IMPLEMENT_STACK_OF(SSL_CIPHER) 3530 IMPLEMENT_STACK_OF(SSL_COMP) 3531 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3532 ssl_cipher_id); 3533
