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