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