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 *end; 1340 STACK_OF(SSL_CIPHER) *sk; 1341 SSL_CIPHER *c; 1342 size_t curlen = 0; 1343 int i; 1344 1345 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1346 (len < 2)) 1347 return(NULL); 1348 1349 sk=s->session->ciphers; 1350 buf[0] = '\0'; 1351 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1352 { 1353 c=sk_SSL_CIPHER_value(sk,i); 1354 end = buf + curlen; 1355 if (strlcat(buf, c->name, len) >= len || 1356 (curlen = strlcat(buf, ":", len)) >= len) 1357 { 1358 /* remove truncated cipher from list */ 1359 *end = '\0'; 1360 break; 1361 } 1362 } 1363 /* remove trailing colon */ 1364 if ((end = strrchr(buf, ':')) != NULL) 1365 *end = '\0'; 1366 return(buf); 1367 } 1368 1369 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1370 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1371 { 1372 int i,j=0; 1373 SSL_CIPHER *c; 1374 unsigned char *q; 1375 #ifndef OPENSSL_NO_KRB5 1376 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1377 #endif /* OPENSSL_NO_KRB5 */ 1378 1379 if (sk == NULL) return(0); 1380 q=p; 1381 1382 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1383 { 1384 c=sk_SSL_CIPHER_value(sk,i); 1385 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1386 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1387 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1388 continue; 1389 #ifndef OPENSSL_NO_KRB5 1390 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1391 nokrb5) 1392 continue; 1393 #endif /* OPENSSL_NO_KRB5 */ 1394 #ifndef OPENSSL_NO_PSK 1395 /* with PSK there must be client callback set */ 1396 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1397 s->psk_client_callback == NULL) 1398 continue; 1399 #endif /* OPENSSL_NO_PSK */ 1400 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p); 1401 p+=j; 1402 } 1403 /* If p == q, no ciphers and caller indicates an error. Otherwise 1404 * add SCSV if not renegotiating. 1405 */ 1406 if (p != q && !s->renegotiate) 1407 { 1408 static SSL_CIPHER scsv = 1409 { 1410 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1411 }; 1412 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p); 1413 p+=j; 1414 #ifdef OPENSSL_RI_DEBUG 1415 fprintf(stderr, "SCSV sent by client\n"); 1416 #endif 1417 } 1418 1419 return(p-q); 1420 } 1421 1422 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1423 STACK_OF(SSL_CIPHER) **skp) 1424 { 1425 const SSL_CIPHER *c; 1426 STACK_OF(SSL_CIPHER) *sk; 1427 int i,n; 1428 if (s->s3) 1429 s->s3->send_connection_binding = 0; 1430 1431 n=ssl_put_cipher_by_char(s,NULL,NULL); 1432 if ((num%n) != 0) 1433 { 1434 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1435 return(NULL); 1436 } 1437 if ((skp == NULL) || (*skp == NULL)) 1438 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1439 else 1440 { 1441 sk= *skp; 1442 sk_SSL_CIPHER_zero(sk); 1443 } 1444 1445 for (i=0; i<num; i+=n) 1446 { 1447 /* Check for SCSV */ 1448 if (s->s3 && (n != 3 || !p[0]) && 1449 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1450 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1451 { 1452 /* SCSV fatal if renegotiating */ 1453 if (s->renegotiate) 1454 { 1455 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1456 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1457 goto err; 1458 } 1459 s->s3->send_connection_binding = 1; 1460 p += n; 1461 #ifdef OPENSSL_RI_DEBUG 1462 fprintf(stderr, "SCSV received by server\n"); 1463 #endif 1464 continue; 1465 } 1466 1467 c=ssl_get_cipher_by_char(s,p); 1468 p+=n; 1469 if (c != NULL) 1470 { 1471 if (!sk_SSL_CIPHER_push(sk,c)) 1472 { 1473 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1474 goto err; 1475 } 1476 } 1477 } 1478 1479 if (skp != NULL) 1480 *skp=sk; 1481 return(sk); 1482 err: 1483 if ((skp == NULL) || (*skp == NULL)) 1484 sk_SSL_CIPHER_free(sk); 1485 return(NULL); 1486 } 1487 1488 1489 #ifndef OPENSSL_NO_TLSEXT 1490 /** return a servername extension value if provided in Client Hello, or NULL. 1491 * So far, only host_name types are defined (RFC 3546). 1492 */ 1493 1494 const char *SSL_get_servername(const SSL *s, const int type) 1495 { 1496 if (type != TLSEXT_NAMETYPE_host_name) 1497 return NULL; 1498 1499 return s->session && !s->tlsext_hostname ? 1500 s->session->tlsext_hostname : 1501 s->tlsext_hostname; 1502 } 1503 1504 int SSL_get_servername_type(const SSL *s) 1505 { 1506 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1507 return TLSEXT_NAMETYPE_host_name; 1508 return -1; 1509 } 1510 1511 # ifndef OPENSSL_NO_NEXTPROTONEG 1512 /* SSL_select_next_proto implements the standard protocol selection. It is 1513 * expected that this function is called from the callback set by 1514 * SSL_CTX_set_next_proto_select_cb. 1515 * 1516 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1517 * strings. The length byte itself is not included in the length. A byte 1518 * string of length 0 is invalid. No byte string may be truncated. 1519 * 1520 * The current, but experimental algorithm for selecting the protocol is: 1521 * 1522 * 1) If the server doesn't support NPN then this is indicated to the 1523 * callback. In this case, the client application has to abort the connection 1524 * or have a default application level protocol. 1525 * 1526 * 2) If the server supports NPN, but advertises an empty list then the 1527 * client selects the first protcol in its list, but indicates via the 1528 * API that this fallback case was enacted. 1529 * 1530 * 3) Otherwise, the client finds the first protocol in the server's list 1531 * that it supports and selects this protocol. This is because it's 1532 * assumed that the server has better information about which protocol 1533 * a client should use. 1534 * 1535 * 4) If the client doesn't support any of the server's advertised 1536 * protocols, then this is treated the same as case 2. 1537 * 1538 * It returns either 1539 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1540 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1541 */ 1542 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) 1543 { 1544 unsigned int i, j; 1545 const unsigned char *result; 1546 int status = OPENSSL_NPN_UNSUPPORTED; 1547 1548 /* For each protocol in server preference order, see if we support it. */ 1549 for (i = 0; i < server_len; ) 1550 { 1551 for (j = 0; j < client_len; ) 1552 { 1553 if (server[i] == client[j] && 1554 memcmp(&server[i+1], &client[j+1], server[i]) == 0) 1555 { 1556 /* We found a match */ 1557 result = &server[i]; 1558 status = OPENSSL_NPN_NEGOTIATED; 1559 goto found; 1560 } 1561 j += client[j]; 1562 j++; 1563 } 1564 i += server[i]; 1565 i++; 1566 } 1567 1568 /* There's no overlap between our protocols and the server's list. */ 1569 result = client; 1570 status = OPENSSL_NPN_NO_OVERLAP; 1571 1572 found: 1573 *out = (unsigned char *) result + 1; 1574 *outlen = result[0]; 1575 return status; 1576 } 1577 1578 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1579 * requested protocol for this connection and returns 0. If the client didn't 1580 * request any protocol, then *data is set to NULL. 1581 * 1582 * Note that the client can request any protocol it chooses. The value returned 1583 * from this function need not be a member of the list of supported protocols 1584 * provided by the callback. 1585 */ 1586 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1587 { 1588 *data = s->next_proto_negotiated; 1589 if (!*data) { 1590 *len = 0; 1591 } else { 1592 *len = s->next_proto_negotiated_len; 1593 } 1594 } 1595 1596 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1597 * TLS server needs a list of supported protocols for Next Protocol 1598 * Negotiation. The returned list must be in wire format. The list is returned 1599 * by setting |out| to point to it and |outlen| to its length. This memory will 1600 * not be modified, but one should assume that the SSL* keeps a reference to 1601 * it. 1602 * 1603 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no 1604 * such extension will be included in the ServerHello. */ 1605 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) 1606 { 1607 ctx->next_protos_advertised_cb = cb; 1608 ctx->next_protos_advertised_cb_arg = arg; 1609 } 1610 1611 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1612 * client needs to select a protocol from the server's provided list. |out| 1613 * must be set to point to the selected protocol (which may be within |in|). 1614 * The length of the protocol name must be written into |outlen|. The server's 1615 * advertised protocols are provided in |in| and |inlen|. The callback can 1616 * assume that |in| is syntactically valid. 1617 * 1618 * The client must select a protocol. It is fatal to the connection if this 1619 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1620 */ 1621 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) 1622 { 1623 ctx->next_proto_select_cb = cb; 1624 ctx->next_proto_select_cb_arg = arg; 1625 } 1626 # endif 1627 #endif 1628 1629 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1630 const char *label, size_t llen, const unsigned char *p, size_t plen, 1631 int use_context) 1632 { 1633 if (s->version < TLS1_VERSION) 1634 return -1; 1635 1636 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1637 llen, p, plen, 1638 use_context); 1639 } 1640 1641 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1642 { 1643 unsigned long l; 1644 1645 l=(unsigned long) 1646 ((unsigned int) a->session_id[0] )| 1647 ((unsigned int) a->session_id[1]<< 8L)| 1648 ((unsigned long)a->session_id[2]<<16L)| 1649 ((unsigned long)a->session_id[3]<<24L); 1650 return(l); 1651 } 1652 1653 /* NB: If this function (or indeed the hash function which uses a sort of 1654 * coarser function than this one) is changed, ensure 1655 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1656 * able to construct an SSL_SESSION that will collide with any existing session 1657 * with a matching session ID. */ 1658 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1659 { 1660 if (a->ssl_version != b->ssl_version) 1661 return(1); 1662 if (a->session_id_length != b->session_id_length) 1663 return(1); 1664 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1665 } 1666 1667 /* These wrapper functions should remain rather than redeclaring 1668 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1669 * variable. The reason is that the functions aren't static, they're exposed via 1670 * ssl.h. */ 1671 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1672 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1673 1674 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1675 { 1676 SSL_CTX *ret=NULL; 1677 1678 if (meth == NULL) 1679 { 1680 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1681 return(NULL); 1682 } 1683 1684 #ifdef OPENSSL_FIPS 1685 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1686 { 1687 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1688 return NULL; 1689 } 1690 #endif 1691 1692 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1693 { 1694 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1695 goto err; 1696 } 1697 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1698 if (ret == NULL) 1699 goto err; 1700 1701 memset(ret,0,sizeof(SSL_CTX)); 1702 1703 ret->method=meth; 1704 1705 ret->cert_store=NULL; 1706 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1707 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1708 ret->session_cache_head=NULL; 1709 ret->session_cache_tail=NULL; 1710 1711 /* We take the system default */ 1712 ret->session_timeout=meth->get_timeout(); 1713 1714 ret->new_session_cb=0; 1715 ret->remove_session_cb=0; 1716 ret->get_session_cb=0; 1717 ret->generate_session_id=0; 1718 1719 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1720 1721 ret->references=1; 1722 ret->quiet_shutdown=0; 1723 1724 /* ret->cipher=NULL;*/ 1725 /* ret->s2->challenge=NULL; 1726 ret->master_key=NULL; 1727 ret->key_arg=NULL; 1728 ret->s2->conn_id=NULL; */ 1729 1730 ret->info_callback=NULL; 1731 1732 ret->app_verify_callback=0; 1733 ret->app_verify_arg=NULL; 1734 1735 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1736 ret->read_ahead=0; 1737 ret->msg_callback=0; 1738 ret->msg_callback_arg=NULL; 1739 ret->verify_mode=SSL_VERIFY_NONE; 1740 #if 0 1741 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1742 #endif 1743 ret->sid_ctx_length=0; 1744 ret->default_verify_callback=NULL; 1745 if ((ret->cert=ssl_cert_new()) == NULL) 1746 goto err; 1747 1748 ret->default_passwd_callback=0; 1749 ret->default_passwd_callback_userdata=NULL; 1750 ret->client_cert_cb=0; 1751 ret->app_gen_cookie_cb=0; 1752 ret->app_verify_cookie_cb=0; 1753 1754 ret->sessions=lh_SSL_SESSION_new(); 1755 if (ret->sessions == NULL) goto err; 1756 ret->cert_store=X509_STORE_new(); 1757 if (ret->cert_store == NULL) goto err; 1758 1759 ssl_create_cipher_list(ret->method, 1760 &ret->cipher_list,&ret->cipher_list_by_id, 1761 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1762 if (ret->cipher_list == NULL 1763 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1764 { 1765 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1766 goto err2; 1767 } 1768 1769 ret->param = X509_VERIFY_PARAM_new(); 1770 if (!ret->param) 1771 goto err; 1772 1773 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1774 { 1775 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1776 goto err2; 1777 } 1778 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1779 { 1780 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1781 goto err2; 1782 } 1783 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1784 { 1785 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1786 goto err2; 1787 } 1788 1789 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1790 goto err; 1791 1792 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1793 1794 ret->extra_certs=NULL; 1795 ret->comp_methods=SSL_COMP_get_compression_methods(); 1796 1797 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1798 1799 #ifndef OPENSSL_NO_TLSEXT 1800 ret->tlsext_servername_callback = 0; 1801 ret->tlsext_servername_arg = NULL; 1802 /* Setup RFC4507 ticket keys */ 1803 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1804 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1805 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1806 ret->options |= SSL_OP_NO_TICKET; 1807 1808 ret->tlsext_status_cb = 0; 1809 ret->tlsext_status_arg = NULL; 1810 1811 # ifndef OPENSSL_NO_NEXTPROTONEG 1812 ret->next_protos_advertised_cb = 0; 1813 ret->next_proto_select_cb = 0; 1814 # endif 1815 #endif 1816 #ifndef OPENSSL_NO_PSK 1817 ret->psk_identity_hint=NULL; 1818 ret->psk_client_callback=NULL; 1819 ret->psk_server_callback=NULL; 1820 #endif 1821 #ifndef OPENSSL_NO_SRP 1822 SSL_CTX_SRP_CTX_init(ret); 1823 #endif 1824 #ifndef OPENSSL_NO_BUF_FREELISTS 1825 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1826 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1827 if (!ret->rbuf_freelist) 1828 goto err; 1829 ret->rbuf_freelist->chunklen = 0; 1830 ret->rbuf_freelist->len = 0; 1831 ret->rbuf_freelist->head = NULL; 1832 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1833 if (!ret->wbuf_freelist) 1834 { 1835 OPENSSL_free(ret->rbuf_freelist); 1836 goto err; 1837 } 1838 ret->wbuf_freelist->chunklen = 0; 1839 ret->wbuf_freelist->len = 0; 1840 ret->wbuf_freelist->head = NULL; 1841 #endif 1842 #ifndef OPENSSL_NO_ENGINE 1843 ret->client_cert_engine = NULL; 1844 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1845 #define eng_strx(x) #x 1846 #define eng_str(x) eng_strx(x) 1847 /* Use specific client engine automatically... ignore errors */ 1848 { 1849 ENGINE *eng; 1850 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1851 if (!eng) 1852 { 1853 ERR_clear_error(); 1854 ENGINE_load_builtin_engines(); 1855 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1856 } 1857 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1858 ERR_clear_error(); 1859 } 1860 #endif 1861 #endif 1862 /* Default is to connect to non-RI servers. When RI is more widely 1863 * deployed might change this. 1864 */ 1865 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1866 1867 return(ret); 1868 err: 1869 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1870 err2: 1871 if (ret != NULL) SSL_CTX_free(ret); 1872 return(NULL); 1873 } 1874 1875 #if 0 1876 static void SSL_COMP_free(SSL_COMP *comp) 1877 { OPENSSL_free(comp); } 1878 #endif 1879 1880 #ifndef OPENSSL_NO_BUF_FREELISTS 1881 static void 1882 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1883 { 1884 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1885 for (ent = list->head; ent; ent = next) 1886 { 1887 next = ent->next; 1888 OPENSSL_free(ent); 1889 } 1890 OPENSSL_free(list); 1891 } 1892 #endif 1893 1894 void SSL_CTX_free(SSL_CTX *a) 1895 { 1896 int i; 1897 1898 if (a == NULL) return; 1899 1900 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1901 #ifdef REF_PRINT 1902 REF_PRINT("SSL_CTX",a); 1903 #endif 1904 if (i > 0) return; 1905 #ifdef REF_CHECK 1906 if (i < 0) 1907 { 1908 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1909 abort(); /* ok */ 1910 } 1911 #endif 1912 1913 if (a->param) 1914 X509_VERIFY_PARAM_free(a->param); 1915 1916 /* 1917 * Free internal session cache. However: the remove_cb() may reference 1918 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1919 * after the sessions were flushed. 1920 * As the ex_data handling routines might also touch the session cache, 1921 * the most secure solution seems to be: empty (flush) the cache, then 1922 * free ex_data, then finally free the cache. 1923 * (See ticket [openssl.org #212].) 1924 */ 1925 if (a->sessions != NULL) 1926 SSL_CTX_flush_sessions(a,0); 1927 1928 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1929 1930 if (a->sessions != NULL) 1931 lh_SSL_SESSION_free(a->sessions); 1932 1933 if (a->cert_store != NULL) 1934 X509_STORE_free(a->cert_store); 1935 if (a->cipher_list != NULL) 1936 sk_SSL_CIPHER_free(a->cipher_list); 1937 if (a->cipher_list_by_id != NULL) 1938 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1939 if (a->cert != NULL) 1940 ssl_cert_free(a->cert); 1941 if (a->client_CA != NULL) 1942 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1943 if (a->extra_certs != NULL) 1944 sk_X509_pop_free(a->extra_certs,X509_free); 1945 #if 0 /* This should never be done, since it removes a global database */ 1946 if (a->comp_methods != NULL) 1947 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1948 #else 1949 a->comp_methods = NULL; 1950 #endif 1951 1952 if (a->srtp_profiles) 1953 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1954 1955 #ifndef OPENSSL_NO_PSK 1956 if (a->psk_identity_hint) 1957 OPENSSL_free(a->psk_identity_hint); 1958 #endif 1959 #ifndef OPENSSL_NO_SRP 1960 SSL_CTX_SRP_CTX_free(a); 1961 #endif 1962 #ifndef OPENSSL_NO_ENGINE 1963 if (a->client_cert_engine) 1964 ENGINE_finish(a->client_cert_engine); 1965 #endif 1966 1967 #ifndef OPENSSL_NO_BUF_FREELISTS 1968 if (a->wbuf_freelist) 1969 ssl_buf_freelist_free(a->wbuf_freelist); 1970 if (a->rbuf_freelist) 1971 ssl_buf_freelist_free(a->rbuf_freelist); 1972 #endif 1973 1974 OPENSSL_free(a); 1975 } 1976 1977 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1978 { 1979 ctx->default_passwd_callback=cb; 1980 } 1981 1982 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1983 { 1984 ctx->default_passwd_callback_userdata=u; 1985 } 1986 1987 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 1988 { 1989 ctx->app_verify_callback=cb; 1990 ctx->app_verify_arg=arg; 1991 } 1992 1993 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 1994 { 1995 ctx->verify_mode=mode; 1996 ctx->default_verify_callback=cb; 1997 } 1998 1999 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 2000 { 2001 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2002 } 2003 2004 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2005 { 2006 CERT_PKEY *cpk; 2007 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 2008 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 2009 int rsa_tmp_export,dh_tmp_export,kl; 2010 unsigned long mask_k,mask_a,emask_k,emask_a; 2011 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2012 #ifndef OPENSSL_NO_ECDH 2013 int have_ecdh_tmp; 2014 #endif 2015 X509 *x = NULL; 2016 EVP_PKEY *ecc_pkey = NULL; 2017 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2018 2019 if (c == NULL) return; 2020 2021 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 2022 2023 #ifndef OPENSSL_NO_RSA 2024 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2025 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 2026 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2027 #else 2028 rsa_tmp=rsa_tmp_export=0; 2029 #endif 2030 #ifndef OPENSSL_NO_DH 2031 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2032 dh_tmp_export=(c->dh_tmp_cb != NULL || 2033 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2034 #else 2035 dh_tmp=dh_tmp_export=0; 2036 #endif 2037 2038 #ifndef OPENSSL_NO_ECDH 2039 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2040 #endif 2041 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 2042 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 2043 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2044 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2045 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2046 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2047 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2048 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 2049 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2050 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2051 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 2052 /* FIX THIS EAY EAY EAY */ 2053 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2054 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2055 cpk= &(c->pkeys[SSL_PKEY_ECC]); 2056 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 2057 mask_k=0; 2058 mask_a=0; 2059 emask_k=0; 2060 emask_a=0; 2061 2062 2063 2064 #ifdef CIPHER_DEBUG 2065 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2066 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 2067 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 2068 #endif 2069 2070 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2071 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2072 mask_k |= SSL_kGOST; 2073 mask_a |= SSL_aGOST01; 2074 } 2075 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2076 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2077 mask_k |= SSL_kGOST; 2078 mask_a |= SSL_aGOST94; 2079 } 2080 2081 if (rsa_enc || (rsa_tmp && rsa_sign)) 2082 mask_k|=SSL_kRSA; 2083 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2084 emask_k|=SSL_kRSA; 2085 2086 #if 0 2087 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2088 if ( (dh_tmp || dh_rsa || dh_dsa) && 2089 (rsa_enc || rsa_sign || dsa_sign)) 2090 mask_k|=SSL_kEDH; 2091 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2092 (rsa_enc || rsa_sign || dsa_sign)) 2093 emask_k|=SSL_kEDH; 2094 #endif 2095 2096 if (dh_tmp_export) 2097 emask_k|=SSL_kEDH; 2098 2099 if (dh_tmp) 2100 mask_k|=SSL_kEDH; 2101 2102 if (dh_rsa) mask_k|=SSL_kDHr; 2103 if (dh_rsa_export) emask_k|=SSL_kDHr; 2104 2105 if (dh_dsa) mask_k|=SSL_kDHd; 2106 if (dh_dsa_export) emask_k|=SSL_kDHd; 2107 2108 if (rsa_enc || rsa_sign) 2109 { 2110 mask_a|=SSL_aRSA; 2111 emask_a|=SSL_aRSA; 2112 } 2113 2114 if (dsa_sign) 2115 { 2116 mask_a|=SSL_aDSS; 2117 emask_a|=SSL_aDSS; 2118 } 2119 2120 mask_a|=SSL_aNULL; 2121 emask_a|=SSL_aNULL; 2122 2123 #ifndef OPENSSL_NO_KRB5 2124 mask_k|=SSL_kKRB5; 2125 mask_a|=SSL_aKRB5; 2126 emask_k|=SSL_kKRB5; 2127 emask_a|=SSL_aKRB5; 2128 #endif 2129 2130 /* An ECC certificate may be usable for ECDH and/or 2131 * ECDSA cipher suites depending on the key usage extension. 2132 */ 2133 if (have_ecc_cert) 2134 { 2135 /* This call populates extension flags (ex_flags) */ 2136 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2137 X509_check_purpose(x, -1, 0); 2138 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2139 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2140 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2141 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2142 ecc_pkey = X509_get_pubkey(x); 2143 ecc_pkey_size = (ecc_pkey != NULL) ? 2144 EVP_PKEY_bits(ecc_pkey) : 0; 2145 EVP_PKEY_free(ecc_pkey); 2146 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2147 { 2148 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2149 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2150 } 2151 #ifndef OPENSSL_NO_ECDH 2152 if (ecdh_ok) 2153 { 2154 2155 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) 2156 { 2157 mask_k|=SSL_kECDHr; 2158 mask_a|=SSL_aECDH; 2159 if (ecc_pkey_size <= 163) 2160 { 2161 emask_k|=SSL_kECDHr; 2162 emask_a|=SSL_aECDH; 2163 } 2164 } 2165 2166 if (pk_nid == NID_X9_62_id_ecPublicKey) 2167 { 2168 mask_k|=SSL_kECDHe; 2169 mask_a|=SSL_aECDH; 2170 if (ecc_pkey_size <= 163) 2171 { 2172 emask_k|=SSL_kECDHe; 2173 emask_a|=SSL_aECDH; 2174 } 2175 } 2176 } 2177 #endif 2178 #ifndef OPENSSL_NO_ECDSA 2179 if (ecdsa_ok) 2180 { 2181 mask_a|=SSL_aECDSA; 2182 emask_a|=SSL_aECDSA; 2183 } 2184 #endif 2185 } 2186 2187 #ifndef OPENSSL_NO_ECDH 2188 if (have_ecdh_tmp) 2189 { 2190 mask_k|=SSL_kEECDH; 2191 emask_k|=SSL_kEECDH; 2192 } 2193 #endif 2194 2195 #ifndef OPENSSL_NO_PSK 2196 mask_k |= SSL_kPSK; 2197 mask_a |= SSL_aPSK; 2198 emask_k |= SSL_kPSK; 2199 emask_a |= SSL_aPSK; 2200 #endif 2201 2202 c->mask_k=mask_k; 2203 c->mask_a=mask_a; 2204 c->export_mask_k=emask_k; 2205 c->export_mask_a=emask_a; 2206 c->valid=1; 2207 } 2208 2209 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2210 #define ku_reject(x, usage) \ 2211 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2212 2213 #ifndef OPENSSL_NO_EC 2214 2215 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2216 { 2217 unsigned long alg_k, alg_a; 2218 EVP_PKEY *pkey = NULL; 2219 int keysize = 0; 2220 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2221 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2222 2223 alg_k = cs->algorithm_mkey; 2224 alg_a = cs->algorithm_auth; 2225 2226 if (SSL_C_IS_EXPORT(cs)) 2227 { 2228 /* ECDH key length in export ciphers must be <= 163 bits */ 2229 pkey = X509_get_pubkey(x); 2230 if (pkey == NULL) return 0; 2231 keysize = EVP_PKEY_bits(pkey); 2232 EVP_PKEY_free(pkey); 2233 if (keysize > 163) return 0; 2234 } 2235 2236 /* This call populates the ex_flags field correctly */ 2237 X509_check_purpose(x, -1, 0); 2238 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2239 { 2240 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2241 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2242 } 2243 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2244 { 2245 /* key usage, if present, must allow key agreement */ 2246 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2247 { 2248 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2249 return 0; 2250 } 2251 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) 2252 { 2253 /* signature alg must be ECDSA */ 2254 if (pk_nid != NID_X9_62_id_ecPublicKey) 2255 { 2256 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2257 return 0; 2258 } 2259 } 2260 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) 2261 { 2262 /* signature alg must be RSA */ 2263 2264 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) 2265 { 2266 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2267 return 0; 2268 } 2269 } 2270 } 2271 if (alg_a & SSL_aECDSA) 2272 { 2273 /* key usage, if present, must allow signing */ 2274 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2275 { 2276 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2277 return 0; 2278 } 2279 } 2280 2281 return 1; /* all checks are ok */ 2282 } 2283 2284 #endif 2285 2286 /* THIS NEEDS CLEANING UP */ 2287 X509 *ssl_get_server_send_cert(SSL *s) 2288 { 2289 unsigned long alg_k,alg_a; 2290 CERT *c; 2291 int i; 2292 2293 c=s->cert; 2294 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2295 2296 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2297 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2298 2299 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2300 { 2301 /* we don't need to look at SSL_kEECDH 2302 * since no certificate is needed for 2303 * anon ECDH and for authenticated 2304 * EECDH, the check for the auth 2305 * algorithm will set i correctly 2306 * NOTE: For ECDH-RSA, we need an ECC 2307 * not an RSA cert but for EECDH-RSA 2308 * we need an RSA cert. Placing the 2309 * checks for SSL_kECDH before RSA 2310 * checks ensures the correct cert is chosen. 2311 */ 2312 i=SSL_PKEY_ECC; 2313 } 2314 else if (alg_a & SSL_aECDSA) 2315 { 2316 i=SSL_PKEY_ECC; 2317 } 2318 else if (alg_k & SSL_kDHr) 2319 i=SSL_PKEY_DH_RSA; 2320 else if (alg_k & SSL_kDHd) 2321 i=SSL_PKEY_DH_DSA; 2322 else if (alg_a & SSL_aDSS) 2323 i=SSL_PKEY_DSA_SIGN; 2324 else if (alg_a & SSL_aRSA) 2325 { 2326 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2327 i=SSL_PKEY_RSA_SIGN; 2328 else 2329 i=SSL_PKEY_RSA_ENC; 2330 } 2331 else if (alg_a & SSL_aKRB5) 2332 { 2333 /* VRS something else here? */ 2334 return(NULL); 2335 } 2336 else if (alg_a & SSL_aGOST94) 2337 i=SSL_PKEY_GOST94; 2338 else if (alg_a & SSL_aGOST01) 2339 i=SSL_PKEY_GOST01; 2340 else /* if (alg_a & SSL_aNULL) */ 2341 { 2342 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR); 2343 return(NULL); 2344 } 2345 if (c->pkeys[i].x509 == NULL) return(NULL); 2346 2347 return(c->pkeys[i].x509); 2348 } 2349 2350 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd) 2351 { 2352 unsigned long alg_a; 2353 CERT *c; 2354 int idx = -1; 2355 2356 alg_a = cipher->algorithm_auth; 2357 c=s->cert; 2358 2359 if ((alg_a & SSL_aDSS) && 2360 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2361 idx = SSL_PKEY_DSA_SIGN; 2362 else if (alg_a & SSL_aRSA) 2363 { 2364 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2365 idx = SSL_PKEY_RSA_SIGN; 2366 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2367 idx = SSL_PKEY_RSA_ENC; 2368 } 2369 else if ((alg_a & SSL_aECDSA) && 2370 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2371 idx = SSL_PKEY_ECC; 2372 if (idx == -1) 2373 { 2374 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2375 return(NULL); 2376 } 2377 if (pmd) 2378 *pmd = c->pkeys[idx].digest; 2379 return c->pkeys[idx].privatekey; 2380 } 2381 2382 void ssl_update_cache(SSL *s,int mode) 2383 { 2384 int i; 2385 2386 /* If the session_id_length is 0, we are not supposed to cache it, 2387 * and it would be rather hard to do anyway :-) */ 2388 if (s->session->session_id_length == 0) return; 2389 2390 i=s->session_ctx->session_cache_mode; 2391 if ((i & mode) && (!s->hit) 2392 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2393 || SSL_CTX_add_session(s->session_ctx,s->session)) 2394 && (s->session_ctx->new_session_cb != NULL)) 2395 { 2396 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2397 if (!s->session_ctx->new_session_cb(s,s->session)) 2398 SSL_SESSION_free(s->session); 2399 } 2400 2401 /* auto flush every 255 connections */ 2402 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2403 ((i & mode) == mode)) 2404 { 2405 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2406 ?s->session_ctx->stats.sess_connect_good 2407 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2408 { 2409 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2410 } 2411 } 2412 } 2413 2414 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2415 { 2416 return(s->method); 2417 } 2418 2419 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2420 { 2421 int conn= -1; 2422 int ret=1; 2423 2424 if (s->method != meth) 2425 { 2426 if (s->handshake_func != NULL) 2427 conn=(s->handshake_func == s->method->ssl_connect); 2428 2429 if (s->method->version == meth->version) 2430 s->method=meth; 2431 else 2432 { 2433 s->method->ssl_free(s); 2434 s->method=meth; 2435 ret=s->method->ssl_new(s); 2436 } 2437 2438 if (conn == 1) 2439 s->handshake_func=meth->ssl_connect; 2440 else if (conn == 0) 2441 s->handshake_func=meth->ssl_accept; 2442 } 2443 return(ret); 2444 } 2445 2446 int SSL_get_error(const SSL *s,int i) 2447 { 2448 int reason; 2449 unsigned long l; 2450 BIO *bio; 2451 2452 if (i > 0) return(SSL_ERROR_NONE); 2453 2454 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2455 * etc, where we do encode the error */ 2456 if ((l=ERR_peek_error()) != 0) 2457 { 2458 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2459 return(SSL_ERROR_SYSCALL); 2460 else 2461 return(SSL_ERROR_SSL); 2462 } 2463 2464 if ((i < 0) && SSL_want_read(s)) 2465 { 2466 bio=SSL_get_rbio(s); 2467 if (BIO_should_read(bio)) 2468 return(SSL_ERROR_WANT_READ); 2469 else if (BIO_should_write(bio)) 2470 /* This one doesn't make too much sense ... We never try 2471 * to write to the rbio, and an application program where 2472 * rbio and wbio are separate couldn't even know what it 2473 * should wait for. 2474 * However if we ever set s->rwstate incorrectly 2475 * (so that we have SSL_want_read(s) instead of 2476 * SSL_want_write(s)) and rbio and wbio *are* the same, 2477 * this test works around that bug; so it might be safer 2478 * to keep it. */ 2479 return(SSL_ERROR_WANT_WRITE); 2480 else if (BIO_should_io_special(bio)) 2481 { 2482 reason=BIO_get_retry_reason(bio); 2483 if (reason == BIO_RR_CONNECT) 2484 return(SSL_ERROR_WANT_CONNECT); 2485 else if (reason == BIO_RR_ACCEPT) 2486 return(SSL_ERROR_WANT_ACCEPT); 2487 else 2488 return(SSL_ERROR_SYSCALL); /* unknown */ 2489 } 2490 } 2491 2492 if ((i < 0) && SSL_want_write(s)) 2493 { 2494 bio=SSL_get_wbio(s); 2495 if (BIO_should_write(bio)) 2496 return(SSL_ERROR_WANT_WRITE); 2497 else if (BIO_should_read(bio)) 2498 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2499 return(SSL_ERROR_WANT_READ); 2500 else if (BIO_should_io_special(bio)) 2501 { 2502 reason=BIO_get_retry_reason(bio); 2503 if (reason == BIO_RR_CONNECT) 2504 return(SSL_ERROR_WANT_CONNECT); 2505 else if (reason == BIO_RR_ACCEPT) 2506 return(SSL_ERROR_WANT_ACCEPT); 2507 else 2508 return(SSL_ERROR_SYSCALL); 2509 } 2510 } 2511 if ((i < 0) && SSL_want_x509_lookup(s)) 2512 { 2513 return(SSL_ERROR_WANT_X509_LOOKUP); 2514 } 2515 2516 if (i == 0) 2517 { 2518 if (s->version == SSL2_VERSION) 2519 { 2520 /* assume it is the socket being closed */ 2521 return(SSL_ERROR_ZERO_RETURN); 2522 } 2523 else 2524 { 2525 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2526 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2527 return(SSL_ERROR_ZERO_RETURN); 2528 } 2529 } 2530 return(SSL_ERROR_SYSCALL); 2531 } 2532 2533 int SSL_do_handshake(SSL *s) 2534 { 2535 int ret=1; 2536 2537 if (s->handshake_func == NULL) 2538 { 2539 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2540 return(-1); 2541 } 2542 2543 s->method->ssl_renegotiate_check(s); 2544 2545 if (SSL_in_init(s) || SSL_in_before(s)) 2546 { 2547 ret=s->handshake_func(s); 2548 } 2549 return(ret); 2550 } 2551 2552 /* For the next 2 functions, SSL_clear() sets shutdown and so 2553 * one of these calls will reset it */ 2554 void SSL_set_accept_state(SSL *s) 2555 { 2556 s->server=1; 2557 s->shutdown=0; 2558 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2559 s->handshake_func=s->method->ssl_accept; 2560 /* clear the current cipher */ 2561 ssl_clear_cipher_ctx(s); 2562 ssl_clear_hash_ctx(&s->read_hash); 2563 ssl_clear_hash_ctx(&s->write_hash); 2564 } 2565 2566 void SSL_set_connect_state(SSL *s) 2567 { 2568 s->server=0; 2569 s->shutdown=0; 2570 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2571 s->handshake_func=s->method->ssl_connect; 2572 /* clear the current cipher */ 2573 ssl_clear_cipher_ctx(s); 2574 ssl_clear_hash_ctx(&s->read_hash); 2575 ssl_clear_hash_ctx(&s->write_hash); 2576 } 2577 2578 int ssl_undefined_function(SSL *s) 2579 { 2580 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2581 return(0); 2582 } 2583 2584 int ssl_undefined_void_function(void) 2585 { 2586 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2587 return(0); 2588 } 2589 2590 int ssl_undefined_const_function(const SSL *s) 2591 { 2592 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2593 return(0); 2594 } 2595 2596 SSL_METHOD *ssl_bad_method(int ver) 2597 { 2598 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2599 return(NULL); 2600 } 2601 2602 const char *SSL_get_version(const SSL *s) 2603 { 2604 if (s->version == TLS1_2_VERSION) 2605 return("TLSv1.2"); 2606 else if (s->version == TLS1_1_VERSION) 2607 return("TLSv1.1"); 2608 if (s->version == TLS1_VERSION) 2609 return("TLSv1"); 2610 else if (s->version == SSL3_VERSION) 2611 return("SSLv3"); 2612 else if (s->version == SSL2_VERSION) 2613 return("SSLv2"); 2614 else 2615 return("unknown"); 2616 } 2617 2618 SSL *SSL_dup(SSL *s) 2619 { 2620 STACK_OF(X509_NAME) *sk; 2621 X509_NAME *xn; 2622 SSL *ret; 2623 int i; 2624 2625 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2626 return(NULL); 2627 2628 ret->version = s->version; 2629 ret->type = s->type; 2630 ret->method = s->method; 2631 2632 if (s->session != NULL) 2633 { 2634 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2635 SSL_copy_session_id(ret,s); 2636 } 2637 else 2638 { 2639 /* No session has been established yet, so we have to expect 2640 * that s->cert or ret->cert will be changed later -- 2641 * they should not both point to the same object, 2642 * and thus we can't use SSL_copy_session_id. */ 2643 2644 ret->method->ssl_free(ret); 2645 ret->method = s->method; 2646 ret->method->ssl_new(ret); 2647 2648 if (s->cert != NULL) 2649 { 2650 if (ret->cert != NULL) 2651 { 2652 ssl_cert_free(ret->cert); 2653 } 2654 ret->cert = ssl_cert_dup(s->cert); 2655 if (ret->cert == NULL) 2656 goto err; 2657 } 2658 2659 SSL_set_session_id_context(ret, 2660 s->sid_ctx, s->sid_ctx_length); 2661 } 2662 2663 ret->options=s->options; 2664 ret->mode=s->mode; 2665 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2666 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2667 ret->msg_callback = s->msg_callback; 2668 ret->msg_callback_arg = s->msg_callback_arg; 2669 SSL_set_verify(ret,SSL_get_verify_mode(s), 2670 SSL_get_verify_callback(s)); 2671 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2672 ret->generate_session_id = s->generate_session_id; 2673 2674 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2675 2676 ret->debug=s->debug; 2677 2678 /* copy app data, a little dangerous perhaps */ 2679 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2680 goto err; 2681 2682 /* setup rbio, and wbio */ 2683 if (s->rbio != NULL) 2684 { 2685 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2686 goto err; 2687 } 2688 if (s->wbio != NULL) 2689 { 2690 if (s->wbio != s->rbio) 2691 { 2692 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2693 goto err; 2694 } 2695 else 2696 ret->wbio=ret->rbio; 2697 } 2698 ret->rwstate = s->rwstate; 2699 ret->in_handshake = s->in_handshake; 2700 ret->handshake_func = s->handshake_func; 2701 ret->server = s->server; 2702 ret->renegotiate = s->renegotiate; 2703 ret->new_session = s->new_session; 2704 ret->quiet_shutdown = s->quiet_shutdown; 2705 ret->shutdown=s->shutdown; 2706 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2707 ret->rstate=s->rstate; 2708 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2709 ret->hit=s->hit; 2710 2711 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2712 2713 /* dup the cipher_list and cipher_list_by_id stacks */ 2714 if (s->cipher_list != NULL) 2715 { 2716 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2717 goto err; 2718 } 2719 if (s->cipher_list_by_id != NULL) 2720 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2721 == NULL) 2722 goto err; 2723 2724 /* Dup the client_CA list */ 2725 if (s->client_CA != NULL) 2726 { 2727 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2728 ret->client_CA=sk; 2729 for (i=0; i<sk_X509_NAME_num(sk); i++) 2730 { 2731 xn=sk_X509_NAME_value(sk,i); 2732 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2733 { 2734 X509_NAME_free(xn); 2735 goto err; 2736 } 2737 } 2738 } 2739 2740 if (0) 2741 { 2742 err: 2743 if (ret != NULL) SSL_free(ret); 2744 ret=NULL; 2745 } 2746 return(ret); 2747 } 2748 2749 void ssl_clear_cipher_ctx(SSL *s) 2750 { 2751 if (s->enc_read_ctx != NULL) 2752 { 2753 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2754 OPENSSL_free(s->enc_read_ctx); 2755 s->enc_read_ctx=NULL; 2756 } 2757 if (s->enc_write_ctx != NULL) 2758 { 2759 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2760 OPENSSL_free(s->enc_write_ctx); 2761 s->enc_write_ctx=NULL; 2762 } 2763 #ifndef OPENSSL_NO_COMP 2764 if (s->expand != NULL) 2765 { 2766 COMP_CTX_free(s->expand); 2767 s->expand=NULL; 2768 } 2769 if (s->compress != NULL) 2770 { 2771 COMP_CTX_free(s->compress); 2772 s->compress=NULL; 2773 } 2774 #endif 2775 } 2776 2777 /* Fix this function so that it takes an optional type parameter */ 2778 X509 *SSL_get_certificate(const SSL *s) 2779 { 2780 if (s->cert != NULL) 2781 return(s->cert->key->x509); 2782 else 2783 return(NULL); 2784 } 2785 2786 /* Fix this function so that it takes an optional type parameter */ 2787 EVP_PKEY *SSL_get_privatekey(SSL *s) 2788 { 2789 if (s->cert != NULL) 2790 return(s->cert->key->privatekey); 2791 else 2792 return(NULL); 2793 } 2794 2795 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2796 { 2797 if ((s->session != NULL) && (s->session->cipher != NULL)) 2798 return(s->session->cipher); 2799 return(NULL); 2800 } 2801 #ifdef OPENSSL_NO_COMP 2802 const void *SSL_get_current_compression(SSL *s) 2803 { 2804 return NULL; 2805 } 2806 const void *SSL_get_current_expansion(SSL *s) 2807 { 2808 return NULL; 2809 } 2810 #else 2811 2812 const COMP_METHOD *SSL_get_current_compression(SSL *s) 2813 { 2814 if (s->compress != NULL) 2815 return(s->compress->meth); 2816 return(NULL); 2817 } 2818 2819 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2820 { 2821 if (s->expand != NULL) 2822 return(s->expand->meth); 2823 return(NULL); 2824 } 2825 #endif 2826 2827 int ssl_init_wbio_buffer(SSL *s,int push) 2828 { 2829 BIO *bbio; 2830 2831 if (s->bbio == NULL) 2832 { 2833 bbio=BIO_new(BIO_f_buffer()); 2834 if (bbio == NULL) return(0); 2835 s->bbio=bbio; 2836 } 2837 else 2838 { 2839 bbio=s->bbio; 2840 if (s->bbio == s->wbio) 2841 s->wbio=BIO_pop(s->wbio); 2842 } 2843 (void)BIO_reset(bbio); 2844 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2845 if (!BIO_set_read_buffer_size(bbio,1)) 2846 { 2847 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2848 return(0); 2849 } 2850 if (push) 2851 { 2852 if (s->wbio != bbio) 2853 s->wbio=BIO_push(bbio,s->wbio); 2854 } 2855 else 2856 { 2857 if (s->wbio == bbio) 2858 s->wbio=BIO_pop(bbio); 2859 } 2860 return(1); 2861 } 2862 2863 void ssl_free_wbio_buffer(SSL *s) 2864 { 2865 if (s->bbio == NULL) return; 2866 2867 if (s->bbio == s->wbio) 2868 { 2869 /* remove buffering */ 2870 s->wbio=BIO_pop(s->wbio); 2871 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2872 assert(s->wbio != NULL); 2873 #endif 2874 } 2875 BIO_free(s->bbio); 2876 s->bbio=NULL; 2877 } 2878 2879 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2880 { 2881 ctx->quiet_shutdown=mode; 2882 } 2883 2884 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2885 { 2886 return(ctx->quiet_shutdown); 2887 } 2888 2889 void SSL_set_quiet_shutdown(SSL *s,int mode) 2890 { 2891 s->quiet_shutdown=mode; 2892 } 2893 2894 int SSL_get_quiet_shutdown(const SSL *s) 2895 { 2896 return(s->quiet_shutdown); 2897 } 2898 2899 void SSL_set_shutdown(SSL *s,int mode) 2900 { 2901 s->shutdown=mode; 2902 } 2903 2904 int SSL_get_shutdown(const SSL *s) 2905 { 2906 return(s->shutdown); 2907 } 2908 2909 int SSL_version(const SSL *s) 2910 { 2911 return(s->version); 2912 } 2913 2914 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2915 { 2916 return(ssl->ctx); 2917 } 2918 2919 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2920 { 2921 if (ssl->ctx == ctx) 2922 return ssl->ctx; 2923 #ifndef OPENSSL_NO_TLSEXT 2924 if (ctx == NULL) 2925 ctx = ssl->initial_ctx; 2926 #endif 2927 if (ssl->cert != NULL) 2928 ssl_cert_free(ssl->cert); 2929 ssl->cert = ssl_cert_dup(ctx->cert); 2930 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 2931 if (ssl->ctx != NULL) 2932 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2933 ssl->ctx = ctx; 2934 return(ssl->ctx); 2935 } 2936 2937 #ifndef OPENSSL_NO_STDIO 2938 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2939 { 2940 return(X509_STORE_set_default_paths(ctx->cert_store)); 2941 } 2942 2943 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2944 const char *CApath) 2945 { 2946 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 2947 } 2948 #endif 2949 2950 void SSL_set_info_callback(SSL *ssl, 2951 void (*cb)(const SSL *ssl,int type,int val)) 2952 { 2953 ssl->info_callback=cb; 2954 } 2955 2956 /* One compiler (Diab DCC) doesn't like argument names in returned 2957 function pointer. */ 2958 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2959 { 2960 return ssl->info_callback; 2961 } 2962 2963 int SSL_state(const SSL *ssl) 2964 { 2965 return(ssl->state); 2966 } 2967 2968 void SSL_set_state(SSL *ssl, int state) 2969 { 2970 ssl->state = state; 2971 } 2972 2973 void SSL_set_verify_result(SSL *ssl,long arg) 2974 { 2975 ssl->verify_result=arg; 2976 } 2977 2978 long SSL_get_verify_result(const SSL *ssl) 2979 { 2980 return(ssl->verify_result); 2981 } 2982 2983 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2984 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2985 { 2986 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2987 new_func, dup_func, free_func); 2988 } 2989 2990 int SSL_set_ex_data(SSL *s,int idx,void *arg) 2991 { 2992 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2993 } 2994 2995 void *SSL_get_ex_data(const SSL *s,int idx) 2996 { 2997 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2998 } 2999 3000 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3001 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3002 { 3003 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3004 new_func, dup_func, free_func); 3005 } 3006 3007 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 3008 { 3009 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3010 } 3011 3012 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 3013 { 3014 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3015 } 3016 3017 int ssl_ok(SSL *s) 3018 { 3019 return(1); 3020 } 3021 3022 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3023 { 3024 return(ctx->cert_store); 3025 } 3026 3027 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 3028 { 3029 if (ctx->cert_store != NULL) 3030 X509_STORE_free(ctx->cert_store); 3031 ctx->cert_store=store; 3032 } 3033 3034 int SSL_want(const SSL *s) 3035 { 3036 return(s->rwstate); 3037 } 3038 3039 /*! 3040 * \brief Set the callback for generating temporary RSA keys. 3041 * \param ctx the SSL context. 3042 * \param cb the callback 3043 */ 3044 3045 #ifndef OPENSSL_NO_RSA 3046 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 3047 int is_export, 3048 int keylength)) 3049 { 3050 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3051 } 3052 3053 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 3054 int is_export, 3055 int keylength)) 3056 { 3057 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3058 } 3059 #endif 3060 3061 #ifdef DOXYGEN 3062 /*! 3063 * \brief The RSA temporary key callback function. 3064 * \param ssl the SSL session. 3065 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3066 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3067 * of the required key in bits. 3068 * \return the temporary RSA key. 3069 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3070 */ 3071 3072 RSA *cb(SSL *ssl,int is_export,int keylength) 3073 {} 3074 #endif 3075 3076 /*! 3077 * \brief Set the callback for generating temporary DH keys. 3078 * \param ctx the SSL context. 3079 * \param dh the callback 3080 */ 3081 3082 #ifndef OPENSSL_NO_DH 3083 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 3084 int keylength)) 3085 { 3086 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3087 } 3088 3089 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 3090 int keylength)) 3091 { 3092 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3093 } 3094 #endif 3095 3096 #ifndef OPENSSL_NO_ECDH 3097 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3098 int keylength)) 3099 { 3100 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3101 } 3102 3103 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3104 int keylength)) 3105 { 3106 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3107 } 3108 #endif 3109 3110 #ifndef OPENSSL_NO_PSK 3111 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3112 { 3113 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3114 { 3115 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3116 return 0; 3117 } 3118 if (ctx->psk_identity_hint != NULL) 3119 OPENSSL_free(ctx->psk_identity_hint); 3120 if (identity_hint != NULL) 3121 { 3122 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3123 if (ctx->psk_identity_hint == NULL) 3124 return 0; 3125 } 3126 else 3127 ctx->psk_identity_hint = NULL; 3128 return 1; 3129 } 3130 3131 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3132 { 3133 if (s == NULL) 3134 return 0; 3135 3136 if (s->session == NULL) 3137 return 1; /* session not created yet, ignored */ 3138 3139 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3140 { 3141 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3142 return 0; 3143 } 3144 if (s->session->psk_identity_hint != NULL) 3145 OPENSSL_free(s->session->psk_identity_hint); 3146 if (identity_hint != NULL) 3147 { 3148 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3149 if (s->session->psk_identity_hint == NULL) 3150 return 0; 3151 } 3152 else 3153 s->session->psk_identity_hint = NULL; 3154 return 1; 3155 } 3156 3157 const char *SSL_get_psk_identity_hint(const SSL *s) 3158 { 3159 if (s == NULL || s->session == NULL) 3160 return NULL; 3161 return(s->session->psk_identity_hint); 3162 } 3163 3164 const char *SSL_get_psk_identity(const SSL *s) 3165 { 3166 if (s == NULL || s->session == NULL) 3167 return NULL; 3168 return(s->session->psk_identity); 3169 } 3170 3171 void SSL_set_psk_client_callback(SSL *s, 3172 unsigned int (*cb)(SSL *ssl, const char *hint, 3173 char *identity, unsigned int max_identity_len, unsigned char *psk, 3174 unsigned int max_psk_len)) 3175 { 3176 s->psk_client_callback = cb; 3177 } 3178 3179 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3180 unsigned int (*cb)(SSL *ssl, const char *hint, 3181 char *identity, unsigned int max_identity_len, unsigned char *psk, 3182 unsigned int max_psk_len)) 3183 { 3184 ctx->psk_client_callback = cb; 3185 } 3186 3187 void SSL_set_psk_server_callback(SSL *s, 3188 unsigned int (*cb)(SSL *ssl, const char *identity, 3189 unsigned char *psk, unsigned int max_psk_len)) 3190 { 3191 s->psk_server_callback = cb; 3192 } 3193 3194 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3195 unsigned int (*cb)(SSL *ssl, const char *identity, 3196 unsigned char *psk, unsigned int max_psk_len)) 3197 { 3198 ctx->psk_server_callback = cb; 3199 } 3200 #endif 3201 3202 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)) 3203 { 3204 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3205 } 3206 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)) 3207 { 3208 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3209 } 3210 3211 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3212 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3213 * any. If EVP_MD pointer is passed, initializes ctx with this md 3214 * Returns newly allocated ctx; 3215 */ 3216 3217 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3218 { 3219 ssl_clear_hash_ctx(hash); 3220 *hash = EVP_MD_CTX_create(); 3221 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3222 return *hash; 3223 } 3224 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3225 { 3226 3227 if (*hash) EVP_MD_CTX_destroy(*hash); 3228 *hash=NULL; 3229 } 3230 3231 void SSL_set_debug(SSL *s, int debug) 3232 { 3233 s->debug = debug; 3234 } 3235 3236 int SSL_cache_hit(SSL *s) 3237 { 3238 return s->hit; 3239 } 3240 3241 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3242 #include "../crypto/bio/bss_file.c" 3243 #endif 3244 3245 IMPLEMENT_STACK_OF(SSL_CIPHER) 3246 IMPLEMENT_STACK_OF(SSL_COMP) 3247 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3248 ssl_cipher_id); 3249