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