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) 1998-2001 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 */ 113 114 115 #ifdef REF_CHECK 116 # include <assert.h> 117 #endif 118 #include <stdio.h> 119 #include "ssl_locl.h" 120 #include "kssl_lcl.h" 121 #include <openssl/objects.h> 122 #include <openssl/lhash.h> 123 #include <openssl/x509v3.h> 124 125 const char *SSL_version_str=OPENSSL_VERSION_TEXT; 126 127 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={ 128 /* evil casts, but these functions are only called if there's a library bug */ 129 (int (*)(SSL *,int))ssl_undefined_function, 130 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 131 ssl_undefined_function, 132 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function, 133 (int (*)(SSL*, int))ssl_undefined_function, 134 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function 135 }; 136 137 int SSL_clear(SSL *s) 138 { 139 140 if (s->method == NULL) 141 { 142 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED); 143 return(0); 144 } 145 146 if (ssl_clear_bad_session(s)) 147 { 148 SSL_SESSION_free(s->session); 149 s->session=NULL; 150 } 151 152 s->error=0; 153 s->hit=0; 154 s->shutdown=0; 155 156 #if 0 /* Disabled since version 1.10 of this file (early return not 157 * needed because SSL_clear is not called when doing renegotiation) */ 158 /* This is set if we are doing dynamic renegotiation so keep 159 * the old cipher. It is sort of a SSL_clear_lite :-) */ 160 if (s->new_session) return(1); 161 #else 162 if (s->new_session) 163 { 164 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR); 165 return 0; 166 } 167 #endif 168 169 s->type=0; 170 171 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT); 172 173 s->version=s->method->version; 174 s->client_version=s->version; 175 s->rwstate=SSL_NOTHING; 176 s->rstate=SSL_ST_READ_HEADER; 177 #if 0 178 s->read_ahead=s->ctx->read_ahead; 179 #endif 180 181 if (s->init_buf != NULL) 182 { 183 BUF_MEM_free(s->init_buf); 184 s->init_buf=NULL; 185 } 186 187 ssl_clear_cipher_ctx(s); 188 189 s->first_packet=0; 190 191 #if 1 192 /* Check to see if we were changed into a different method, if 193 * so, revert back if we are not doing session-id reuse. */ 194 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method)) 195 { 196 s->method->ssl_free(s); 197 s->method=s->ctx->method; 198 if (!s->method->ssl_new(s)) 199 return(0); 200 } 201 else 202 #endif 203 s->method->ssl_clear(s); 204 return(1); 205 } 206 207 /** Used to change an SSL_CTXs default SSL method type */ 208 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth) 209 { 210 STACK_OF(SSL_CIPHER) *sk; 211 212 ctx->method=meth; 213 214 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list), 215 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST); 216 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) 217 { 218 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 219 return(0); 220 } 221 return(1); 222 } 223 224 SSL *SSL_new(SSL_CTX *ctx) 225 { 226 SSL *s; 227 228 if (ctx == NULL) 229 { 230 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX); 231 return(NULL); 232 } 233 if (ctx->method == NULL) 234 { 235 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 236 return(NULL); 237 } 238 239 s=(SSL *)OPENSSL_malloc(sizeof(SSL)); 240 if (s == NULL) goto err; 241 memset(s,0,sizeof(SSL)); 242 243 #ifndef OPENSSL_NO_KRB5 244 s->kssl_ctx = kssl_ctx_new(); 245 #endif /* OPENSSL_NO_KRB5 */ 246 247 s->options=ctx->options; 248 s->mode=ctx->mode; 249 s->max_cert_list=ctx->max_cert_list; 250 251 if (ctx->cert != NULL) 252 { 253 /* Earlier library versions used to copy the pointer to 254 * the CERT, not its contents; only when setting new 255 * parameters for the per-SSL copy, ssl_cert_new would be 256 * called (and the direct reference to the per-SSL_CTX 257 * settings would be lost, but those still were indirectly 258 * accessed for various purposes, and for that reason they 259 * used to be known as s->ctx->default_cert). 260 * Now we don't look at the SSL_CTX's CERT after having 261 * duplicated it once. */ 262 263 s->cert = ssl_cert_dup(ctx->cert); 264 if (s->cert == NULL) 265 goto err; 266 } 267 else 268 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 269 270 s->read_ahead=ctx->read_ahead; 271 s->msg_callback=ctx->msg_callback; 272 s->msg_callback_arg=ctx->msg_callback_arg; 273 s->verify_mode=ctx->verify_mode; 274 s->verify_depth=ctx->verify_depth; 275 s->sid_ctx_length=ctx->sid_ctx_length; 276 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 277 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx)); 278 s->verify_callback=ctx->default_verify_callback; 279 s->generate_session_id=ctx->generate_session_id; 280 s->purpose = ctx->purpose; 281 s->trust = ctx->trust; 282 s->quiet_shutdown=ctx->quiet_shutdown; 283 284 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 285 s->ctx=ctx; 286 287 s->verify_result=X509_V_OK; 288 289 s->method=ctx->method; 290 291 if (!s->method->ssl_new(s)) 292 goto err; 293 294 s->references=1; 295 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1; 296 297 SSL_clear(s); 298 299 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 300 301 return(s); 302 err: 303 if (s != NULL) 304 { 305 if (s->cert != NULL) 306 ssl_cert_free(s->cert); 307 if (s->ctx != NULL) 308 SSL_CTX_free(s->ctx); /* decrement reference count */ 309 OPENSSL_free(s); 310 } 311 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE); 312 return(NULL); 313 } 314 315 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx, 316 unsigned int sid_ctx_len) 317 { 318 if(sid_ctx_len > sizeof ctx->sid_ctx) 319 { 320 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 321 return 0; 322 } 323 ctx->sid_ctx_length=sid_ctx_len; 324 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len); 325 326 return 1; 327 } 328 329 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx, 330 unsigned int sid_ctx_len) 331 { 332 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 333 { 334 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 335 return 0; 336 } 337 ssl->sid_ctx_length=sid_ctx_len; 338 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len); 339 340 return 1; 341 } 342 343 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 344 { 345 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 346 ctx->generate_session_id = cb; 347 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 348 return 1; 349 } 350 351 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 352 { 353 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 354 ssl->generate_session_id = cb; 355 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 356 return 1; 357 } 358 359 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 360 unsigned int id_len) 361 { 362 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 363 * we can "construct" a session to give us the desired check - ie. to 364 * find if there's a session in the hash table that would conflict with 365 * any new session built out of this id/id_len and the ssl_version in 366 * use by this SSL. */ 367 SSL_SESSION r, *p; 368 369 if(id_len > sizeof r.session_id) 370 return 0; 371 372 r.ssl_version = ssl->version; 373 r.session_id_length = id_len; 374 memcpy(r.session_id, id, id_len); 375 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 376 * callback is calling us to check the uniqueness of a shorter ID, it 377 * must be compared as a padded-out ID because that is what it will be 378 * converted to when the callback has finished choosing it. */ 379 if((r.ssl_version == SSL2_VERSION) && 380 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) 381 { 382 memset(r.session_id + id_len, 0, 383 SSL2_SSL_SESSION_ID_LENGTH - id_len); 384 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 385 } 386 387 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 388 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r); 389 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 390 return (p != NULL); 391 } 392 393 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 394 { 395 return X509_PURPOSE_set(&s->purpose, purpose); 396 } 397 398 int SSL_set_purpose(SSL *s, int purpose) 399 { 400 return X509_PURPOSE_set(&s->purpose, purpose); 401 } 402 403 int SSL_CTX_set_trust(SSL_CTX *s, int trust) 404 { 405 return X509_TRUST_set(&s->trust, trust); 406 } 407 408 int SSL_set_trust(SSL *s, int trust) 409 { 410 return X509_TRUST_set(&s->trust, trust); 411 } 412 413 void SSL_free(SSL *s) 414 { 415 int i; 416 417 if(s == NULL) 418 return; 419 420 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL); 421 #ifdef REF_PRINT 422 REF_PRINT("SSL",s); 423 #endif 424 if (i > 0) return; 425 #ifdef REF_CHECK 426 if (i < 0) 427 { 428 fprintf(stderr,"SSL_free, bad reference count\n"); 429 abort(); /* ok */ 430 } 431 #endif 432 433 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 434 435 if (s->bbio != NULL) 436 { 437 /* If the buffering BIO is in place, pop it off */ 438 if (s->bbio == s->wbio) 439 { 440 s->wbio=BIO_pop(s->wbio); 441 } 442 BIO_free(s->bbio); 443 s->bbio=NULL; 444 } 445 if (s->rbio != NULL) 446 BIO_free_all(s->rbio); 447 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 448 BIO_free_all(s->wbio); 449 450 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf); 451 452 /* add extra stuff */ 453 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list); 454 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id); 455 456 /* Make the next call work :-) */ 457 if (s->session != NULL) 458 { 459 ssl_clear_bad_session(s); 460 SSL_SESSION_free(s->session); 461 } 462 463 ssl_clear_cipher_ctx(s); 464 465 if (s->cert != NULL) ssl_cert_free(s->cert); 466 /* Free up if allocated */ 467 468 if (s->ctx) SSL_CTX_free(s->ctx); 469 470 if (s->client_CA != NULL) 471 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free); 472 473 if (s->method != NULL) s->method->ssl_free(s); 474 475 #ifndef OPENSSL_NO_KRB5 476 if (s->kssl_ctx != NULL) 477 kssl_ctx_free(s->kssl_ctx); 478 #endif /* OPENSSL_NO_KRB5 */ 479 480 OPENSSL_free(s); 481 } 482 483 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 484 { 485 /* If the output buffering BIO is still in place, remove it 486 */ 487 if (s->bbio != NULL) 488 { 489 if (s->wbio == s->bbio) 490 { 491 s->wbio=s->wbio->next_bio; 492 s->bbio->next_bio=NULL; 493 } 494 } 495 if ((s->rbio != NULL) && (s->rbio != rbio)) 496 BIO_free_all(s->rbio); 497 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 498 BIO_free_all(s->wbio); 499 s->rbio=rbio; 500 s->wbio=wbio; 501 } 502 503 BIO *SSL_get_rbio(SSL *s) 504 { return(s->rbio); } 505 506 BIO *SSL_get_wbio(SSL *s) 507 { return(s->wbio); } 508 509 int SSL_get_fd(SSL *s) 510 { 511 return(SSL_get_rfd(s)); 512 } 513 514 int SSL_get_rfd(SSL *s) 515 { 516 int ret= -1; 517 BIO *b,*r; 518 519 b=SSL_get_rbio(s); 520 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 521 if (r != NULL) 522 BIO_get_fd(r,&ret); 523 return(ret); 524 } 525 526 int SSL_get_wfd(SSL *s) 527 { 528 int ret= -1; 529 BIO *b,*r; 530 531 b=SSL_get_wbio(s); 532 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 533 if (r != NULL) 534 BIO_get_fd(r,&ret); 535 return(ret); 536 } 537 538 #ifndef OPENSSL_NO_SOCK 539 int SSL_set_fd(SSL *s,int fd) 540 { 541 int ret=0; 542 BIO *bio=NULL; 543 544 bio=BIO_new(BIO_s_socket()); 545 546 if (bio == NULL) 547 { 548 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 549 goto err; 550 } 551 BIO_set_fd(bio,fd,BIO_NOCLOSE); 552 SSL_set_bio(s,bio,bio); 553 ret=1; 554 err: 555 return(ret); 556 } 557 558 int SSL_set_wfd(SSL *s,int fd) 559 { 560 int ret=0; 561 BIO *bio=NULL; 562 563 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 564 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 565 { 566 bio=BIO_new(BIO_s_socket()); 567 568 if (bio == NULL) 569 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 570 BIO_set_fd(bio,fd,BIO_NOCLOSE); 571 SSL_set_bio(s,SSL_get_rbio(s),bio); 572 } 573 else 574 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 575 ret=1; 576 err: 577 return(ret); 578 } 579 580 int SSL_set_rfd(SSL *s,int fd) 581 { 582 int ret=0; 583 BIO *bio=NULL; 584 585 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 586 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 587 { 588 bio=BIO_new(BIO_s_socket()); 589 590 if (bio == NULL) 591 { 592 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 593 goto err; 594 } 595 BIO_set_fd(bio,fd,BIO_NOCLOSE); 596 SSL_set_bio(s,bio,SSL_get_wbio(s)); 597 } 598 else 599 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 600 ret=1; 601 err: 602 return(ret); 603 } 604 #endif 605 606 607 /* return length of latest Finished message we sent, copy to 'buf' */ 608 size_t SSL_get_finished(SSL *s, void *buf, size_t count) 609 { 610 size_t ret = 0; 611 612 if (s->s3 != NULL) 613 { 614 ret = s->s3->tmp.finish_md_len; 615 if (count > ret) 616 count = ret; 617 memcpy(buf, s->s3->tmp.finish_md, count); 618 } 619 return ret; 620 } 621 622 /* return length of latest Finished message we expected, copy to 'buf' */ 623 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count) 624 { 625 size_t ret = 0; 626 627 if (s->s3 != NULL) 628 { 629 ret = s->s3->tmp.peer_finish_md_len; 630 if (count > ret) 631 count = ret; 632 memcpy(buf, s->s3->tmp.peer_finish_md, count); 633 } 634 return ret; 635 } 636 637 638 int SSL_get_verify_mode(SSL *s) 639 { 640 return(s->verify_mode); 641 } 642 643 int SSL_get_verify_depth(SSL *s) 644 { 645 return(s->verify_depth); 646 } 647 648 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *) 649 { 650 return(s->verify_callback); 651 } 652 653 int SSL_CTX_get_verify_mode(SSL_CTX *ctx) 654 { 655 return(ctx->verify_mode); 656 } 657 658 int SSL_CTX_get_verify_depth(SSL_CTX *ctx) 659 { 660 return(ctx->verify_depth); 661 } 662 663 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *) 664 { 665 return(ctx->default_verify_callback); 666 } 667 668 void SSL_set_verify(SSL *s,int mode, 669 int (*callback)(int ok,X509_STORE_CTX *ctx)) 670 { 671 s->verify_mode=mode; 672 if (callback != NULL) 673 s->verify_callback=callback; 674 } 675 676 void SSL_set_verify_depth(SSL *s,int depth) 677 { 678 s->verify_depth=depth; 679 } 680 681 void SSL_set_read_ahead(SSL *s,int yes) 682 { 683 s->read_ahead=yes; 684 } 685 686 int SSL_get_read_ahead(SSL *s) 687 { 688 return(s->read_ahead); 689 } 690 691 int SSL_pending(SSL *s) 692 { 693 /* SSL_pending cannot work properly if read-ahead is enabled 694 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 695 * and it is impossible to fix since SSL_pending cannot report 696 * errors that may be observed while scanning the new data. 697 * (Note that SSL_pending() is often used as a boolean value, 698 * so we'd better not return -1.) 699 */ 700 return(s->method->ssl_pending(s)); 701 } 702 703 X509 *SSL_get_peer_certificate(SSL *s) 704 { 705 X509 *r; 706 707 if ((s == NULL) || (s->session == NULL)) 708 r=NULL; 709 else 710 r=s->session->peer; 711 712 if (r == NULL) return(r); 713 714 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 715 716 return(r); 717 } 718 719 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s) 720 { 721 STACK_OF(X509) *r; 722 723 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 724 r=NULL; 725 else 726 r=s->session->sess_cert->cert_chain; 727 728 /* If we are a client, cert_chain includes the peer's own 729 * certificate; if we are a server, it does not. */ 730 731 return(r); 732 } 733 734 /* Now in theory, since the calling process own 't' it should be safe to 735 * modify. We need to be able to read f without being hassled */ 736 void SSL_copy_session_id(SSL *t,SSL *f) 737 { 738 CERT *tmp; 739 740 /* Do we need to to SSL locking? */ 741 SSL_set_session(t,SSL_get_session(f)); 742 743 /* what if we are setup as SSLv2 but want to talk SSLv3 or 744 * vice-versa */ 745 if (t->method != f->method) 746 { 747 t->method->ssl_free(t); /* cleanup current */ 748 t->method=f->method; /* change method */ 749 t->method->ssl_new(t); /* setup new */ 750 } 751 752 tmp=t->cert; 753 if (f->cert != NULL) 754 { 755 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 756 t->cert=f->cert; 757 } 758 else 759 t->cert=NULL; 760 if (tmp != NULL) ssl_cert_free(tmp); 761 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 762 } 763 764 /* Fix this so it checks all the valid key/cert options */ 765 int SSL_CTX_check_private_key(SSL_CTX *ctx) 766 { 767 if ( (ctx == NULL) || 768 (ctx->cert == NULL) || 769 (ctx->cert->key->x509 == NULL)) 770 { 771 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 772 return(0); 773 } 774 if (ctx->cert->key->privatekey == NULL) 775 { 776 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 777 return(0); 778 } 779 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 780 } 781 782 /* Fix this function so that it takes an optional type parameter */ 783 int SSL_check_private_key(SSL *ssl) 784 { 785 if (ssl == NULL) 786 { 787 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 788 return(0); 789 } 790 if (ssl->cert == NULL) 791 { 792 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 793 return 0; 794 } 795 if (ssl->cert->key->x509 == NULL) 796 { 797 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 798 return(0); 799 } 800 if (ssl->cert->key->privatekey == NULL) 801 { 802 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 803 return(0); 804 } 805 return(X509_check_private_key(ssl->cert->key->x509, 806 ssl->cert->key->privatekey)); 807 } 808 809 int SSL_accept(SSL *s) 810 { 811 if (s->handshake_func == 0) 812 /* Not properly initialized yet */ 813 SSL_set_accept_state(s); 814 815 return(s->method->ssl_accept(s)); 816 } 817 818 int SSL_connect(SSL *s) 819 { 820 if (s->handshake_func == 0) 821 /* Not properly initialized yet */ 822 SSL_set_connect_state(s); 823 824 return(s->method->ssl_connect(s)); 825 } 826 827 long SSL_get_default_timeout(SSL *s) 828 { 829 return(s->method->get_timeout()); 830 } 831 832 int SSL_read(SSL *s,void *buf,int num) 833 { 834 if (s->handshake_func == 0) 835 { 836 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 837 return -1; 838 } 839 840 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 841 { 842 s->rwstate=SSL_NOTHING; 843 return(0); 844 } 845 return(s->method->ssl_read(s,buf,num)); 846 } 847 848 int SSL_peek(SSL *s,void *buf,int num) 849 { 850 if (s->handshake_func == 0) 851 { 852 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 853 return -1; 854 } 855 856 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 857 { 858 return(0); 859 } 860 return(s->method->ssl_peek(s,buf,num)); 861 } 862 863 int SSL_write(SSL *s,const void *buf,int num) 864 { 865 if (s->handshake_func == 0) 866 { 867 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 868 return -1; 869 } 870 871 if (s->shutdown & SSL_SENT_SHUTDOWN) 872 { 873 s->rwstate=SSL_NOTHING; 874 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 875 return(-1); 876 } 877 return(s->method->ssl_write(s,buf,num)); 878 } 879 880 int SSL_shutdown(SSL *s) 881 { 882 /* Note that this function behaves differently from what one might 883 * expect. Return values are 0 for no success (yet), 884 * 1 for success; but calling it once is usually not enough, 885 * even if blocking I/O is used (see ssl3_shutdown). 886 */ 887 888 if (s->handshake_func == 0) 889 { 890 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 891 return -1; 892 } 893 894 if ((s != NULL) && !SSL_in_init(s)) 895 return(s->method->ssl_shutdown(s)); 896 else 897 return(1); 898 } 899 900 int SSL_renegotiate(SSL *s) 901 { 902 if (s->new_session == 0) 903 { 904 s->new_session=1; 905 } 906 return(s->method->ssl_renegotiate(s)); 907 } 908 909 int SSL_renegotiate_pending(SSL *s) 910 { 911 /* becomes true when negotiation is requested; 912 * false again once a handshake has finished */ 913 return (s->new_session != 0); 914 } 915 916 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 917 { 918 long l; 919 920 switch (cmd) 921 { 922 case SSL_CTRL_GET_READ_AHEAD: 923 return(s->read_ahead); 924 case SSL_CTRL_SET_READ_AHEAD: 925 l=s->read_ahead; 926 s->read_ahead=larg; 927 return(l); 928 929 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 930 s->msg_callback_arg = parg; 931 return 1; 932 933 case SSL_CTRL_OPTIONS: 934 return(s->options|=larg); 935 case SSL_CTRL_MODE: 936 return(s->mode|=larg); 937 case SSL_CTRL_GET_MAX_CERT_LIST: 938 return(s->max_cert_list); 939 case SSL_CTRL_SET_MAX_CERT_LIST: 940 l=s->max_cert_list; 941 s->max_cert_list=larg; 942 return(l); 943 default: 944 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 945 } 946 } 947 948 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)()) 949 { 950 switch(cmd) 951 { 952 case SSL_CTRL_SET_MSG_CALLBACK: 953 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 954 return 1; 955 956 default: 957 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 958 } 959 } 960 961 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx) 962 { 963 return ctx->sessions; 964 } 965 966 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 967 { 968 long l; 969 970 switch (cmd) 971 { 972 case SSL_CTRL_GET_READ_AHEAD: 973 return(ctx->read_ahead); 974 case SSL_CTRL_SET_READ_AHEAD: 975 l=ctx->read_ahead; 976 ctx->read_ahead=larg; 977 return(l); 978 979 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 980 ctx->msg_callback_arg = parg; 981 return 1; 982 983 case SSL_CTRL_GET_MAX_CERT_LIST: 984 return(ctx->max_cert_list); 985 case SSL_CTRL_SET_MAX_CERT_LIST: 986 l=ctx->max_cert_list; 987 ctx->max_cert_list=larg; 988 return(l); 989 990 case SSL_CTRL_SET_SESS_CACHE_SIZE: 991 l=ctx->session_cache_size; 992 ctx->session_cache_size=larg; 993 return(l); 994 case SSL_CTRL_GET_SESS_CACHE_SIZE: 995 return(ctx->session_cache_size); 996 case SSL_CTRL_SET_SESS_CACHE_MODE: 997 l=ctx->session_cache_mode; 998 ctx->session_cache_mode=larg; 999 return(l); 1000 case SSL_CTRL_GET_SESS_CACHE_MODE: 1001 return(ctx->session_cache_mode); 1002 1003 case SSL_CTRL_SESS_NUMBER: 1004 return(ctx->sessions->num_items); 1005 case SSL_CTRL_SESS_CONNECT: 1006 return(ctx->stats.sess_connect); 1007 case SSL_CTRL_SESS_CONNECT_GOOD: 1008 return(ctx->stats.sess_connect_good); 1009 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1010 return(ctx->stats.sess_connect_renegotiate); 1011 case SSL_CTRL_SESS_ACCEPT: 1012 return(ctx->stats.sess_accept); 1013 case SSL_CTRL_SESS_ACCEPT_GOOD: 1014 return(ctx->stats.sess_accept_good); 1015 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1016 return(ctx->stats.sess_accept_renegotiate); 1017 case SSL_CTRL_SESS_HIT: 1018 return(ctx->stats.sess_hit); 1019 case SSL_CTRL_SESS_CB_HIT: 1020 return(ctx->stats.sess_cb_hit); 1021 case SSL_CTRL_SESS_MISSES: 1022 return(ctx->stats.sess_miss); 1023 case SSL_CTRL_SESS_TIMEOUTS: 1024 return(ctx->stats.sess_timeout); 1025 case SSL_CTRL_SESS_CACHE_FULL: 1026 return(ctx->stats.sess_cache_full); 1027 case SSL_CTRL_OPTIONS: 1028 return(ctx->options|=larg); 1029 case SSL_CTRL_MODE: 1030 return(ctx->mode|=larg); 1031 default: 1032 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1033 } 1034 } 1035 1036 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)()) 1037 { 1038 switch(cmd) 1039 { 1040 case SSL_CTRL_SET_MSG_CALLBACK: 1041 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1042 return 1; 1043 1044 default: 1045 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1046 } 1047 } 1048 1049 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1050 { 1051 long l; 1052 1053 l=a->id-b->id; 1054 if (l == 0L) 1055 return(0); 1056 else 1057 return((l > 0)?1:-1); 1058 } 1059 1060 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1061 const SSL_CIPHER * const *bp) 1062 { 1063 long l; 1064 1065 l=(*ap)->id-(*bp)->id; 1066 if (l == 0L) 1067 return(0); 1068 else 1069 return((l > 0)?1:-1); 1070 } 1071 1072 /** return a STACK of the ciphers available for the SSL and in order of 1073 * preference */ 1074 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s) 1075 { 1076 if (s != NULL) 1077 { 1078 if (s->cipher_list != NULL) 1079 { 1080 return(s->cipher_list); 1081 } 1082 else if ((s->ctx != NULL) && 1083 (s->ctx->cipher_list != NULL)) 1084 { 1085 return(s->ctx->cipher_list); 1086 } 1087 } 1088 return(NULL); 1089 } 1090 1091 /** return a STACK of the ciphers available for the SSL and in order of 1092 * algorithm id */ 1093 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1094 { 1095 if (s != NULL) 1096 { 1097 if (s->cipher_list_by_id != NULL) 1098 { 1099 return(s->cipher_list_by_id); 1100 } 1101 else if ((s->ctx != NULL) && 1102 (s->ctx->cipher_list_by_id != NULL)) 1103 { 1104 return(s->ctx->cipher_list_by_id); 1105 } 1106 } 1107 return(NULL); 1108 } 1109 1110 /** The old interface to get the same thing as SSL_get_ciphers() */ 1111 const char *SSL_get_cipher_list(SSL *s,int n) 1112 { 1113 SSL_CIPHER *c; 1114 STACK_OF(SSL_CIPHER) *sk; 1115 1116 if (s == NULL) return(NULL); 1117 sk=SSL_get_ciphers(s); 1118 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1119 return(NULL); 1120 c=sk_SSL_CIPHER_value(sk,n); 1121 if (c == NULL) return(NULL); 1122 return(c->name); 1123 } 1124 1125 /** specify the ciphers to be used by default by the SSL_CTX */ 1126 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1127 { 1128 STACK_OF(SSL_CIPHER) *sk; 1129 1130 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1131 &ctx->cipher_list_by_id,str); 1132 /* XXXX */ 1133 return((sk == NULL)?0:1); 1134 } 1135 1136 /** specify the ciphers to be used by the SSL */ 1137 int SSL_set_cipher_list(SSL *s,const char *str) 1138 { 1139 STACK_OF(SSL_CIPHER) *sk; 1140 1141 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1142 &s->cipher_list_by_id,str); 1143 /* XXXX */ 1144 return((sk == NULL)?0:1); 1145 } 1146 1147 /* works well for SSLv2, not so good for SSLv3 */ 1148 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len) 1149 { 1150 char *p; 1151 const char *cp; 1152 STACK_OF(SSL_CIPHER) *sk; 1153 SSL_CIPHER *c; 1154 int i; 1155 1156 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1157 (len < 2)) 1158 return(NULL); 1159 1160 p=buf; 1161 sk=s->session->ciphers; 1162 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1163 { 1164 /* Decrement for either the ':' or a '\0' */ 1165 len--; 1166 c=sk_SSL_CIPHER_value(sk,i); 1167 for (cp=c->name; *cp; ) 1168 { 1169 if (len-- == 0) 1170 { 1171 *p='\0'; 1172 return(buf); 1173 } 1174 else 1175 *(p++)= *(cp++); 1176 } 1177 *(p++)=':'; 1178 } 1179 p[-1]='\0'; 1180 return(buf); 1181 } 1182 1183 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p) 1184 { 1185 int i,j=0; 1186 SSL_CIPHER *c; 1187 unsigned char *q; 1188 #ifndef OPENSSL_NO_KRB5 1189 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1190 #endif /* OPENSSL_NO_KRB5 */ 1191 1192 if (sk == NULL) return(0); 1193 q=p; 1194 1195 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1196 { 1197 c=sk_SSL_CIPHER_value(sk,i); 1198 #ifndef OPENSSL_NO_KRB5 1199 if ((c->algorithms & SSL_KRB5) && nokrb5) 1200 continue; 1201 #endif /* OPENSSL_NO_KRB5 */ 1202 j=ssl_put_cipher_by_char(s,c,p); 1203 p+=j; 1204 } 1205 return(p-q); 1206 } 1207 1208 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1209 STACK_OF(SSL_CIPHER) **skp) 1210 { 1211 SSL_CIPHER *c; 1212 STACK_OF(SSL_CIPHER) *sk; 1213 int i,n; 1214 1215 n=ssl_put_cipher_by_char(s,NULL,NULL); 1216 if ((num%n) != 0) 1217 { 1218 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1219 return(NULL); 1220 } 1221 if ((skp == NULL) || (*skp == NULL)) 1222 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1223 else 1224 { 1225 sk= *skp; 1226 sk_SSL_CIPHER_zero(sk); 1227 } 1228 1229 for (i=0; i<num; i+=n) 1230 { 1231 c=ssl_get_cipher_by_char(s,p); 1232 p+=n; 1233 if (c != NULL) 1234 { 1235 if (!sk_SSL_CIPHER_push(sk,c)) 1236 { 1237 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1238 goto err; 1239 } 1240 } 1241 } 1242 1243 if (skp != NULL) 1244 *skp=sk; 1245 return(sk); 1246 err: 1247 if ((skp == NULL) || (*skp == NULL)) 1248 sk_SSL_CIPHER_free(sk); 1249 return(NULL); 1250 } 1251 1252 unsigned long SSL_SESSION_hash(SSL_SESSION *a) 1253 { 1254 unsigned long l; 1255 1256 l=(unsigned long) 1257 ((unsigned int) a->session_id[0] )| 1258 ((unsigned int) a->session_id[1]<< 8L)| 1259 ((unsigned long)a->session_id[2]<<16L)| 1260 ((unsigned long)a->session_id[3]<<24L); 1261 return(l); 1262 } 1263 1264 /* NB: If this function (or indeed the hash function which uses a sort of 1265 * coarser function than this one) is changed, ensure 1266 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1267 * able to construct an SSL_SESSION that will collide with any existing session 1268 * with a matching session ID. */ 1269 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b) 1270 { 1271 if (a->ssl_version != b->ssl_version) 1272 return(1); 1273 if (a->session_id_length != b->session_id_length) 1274 return(1); 1275 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1276 } 1277 1278 /* These wrapper functions should remain rather than redeclaring 1279 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1280 * variable. The reason is that the functions aren't static, they're exposed via 1281 * ssl.h. */ 1282 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *) 1283 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *) 1284 1285 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth) 1286 { 1287 SSL_CTX *ret=NULL; 1288 1289 if (meth == NULL) 1290 { 1291 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1292 return(NULL); 1293 } 1294 1295 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1296 { 1297 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1298 goto err; 1299 } 1300 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1301 if (ret == NULL) 1302 goto err; 1303 1304 memset(ret,0,sizeof(SSL_CTX)); 1305 1306 ret->method=meth; 1307 1308 ret->cert_store=NULL; 1309 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1310 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1311 ret->session_cache_head=NULL; 1312 ret->session_cache_tail=NULL; 1313 1314 /* We take the system default */ 1315 ret->session_timeout=meth->get_timeout(); 1316 1317 ret->new_session_cb=0; 1318 ret->remove_session_cb=0; 1319 ret->get_session_cb=0; 1320 ret->generate_session_id=0; 1321 1322 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1323 1324 ret->references=1; 1325 ret->quiet_shutdown=0; 1326 1327 /* ret->cipher=NULL;*/ 1328 /* ret->s2->challenge=NULL; 1329 ret->master_key=NULL; 1330 ret->key_arg=NULL; 1331 ret->s2->conn_id=NULL; */ 1332 1333 ret->info_callback=NULL; 1334 1335 ret->app_verify_callback=0; 1336 ret->app_verify_arg=NULL; 1337 1338 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1339 ret->read_ahead=0; 1340 ret->msg_callback=0; 1341 ret->msg_callback_arg=NULL; 1342 ret->verify_mode=SSL_VERIFY_NONE; 1343 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1344 ret->sid_ctx_length=0; 1345 ret->default_verify_callback=NULL; 1346 if ((ret->cert=ssl_cert_new()) == NULL) 1347 goto err; 1348 1349 ret->default_passwd_callback=0; 1350 ret->default_passwd_callback_userdata=NULL; 1351 ret->client_cert_cb=0; 1352 1353 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash), 1354 LHASH_COMP_FN(SSL_SESSION_cmp)); 1355 if (ret->sessions == NULL) goto err; 1356 ret->cert_store=X509_STORE_new(); 1357 if (ret->cert_store == NULL) goto err; 1358 1359 ssl_create_cipher_list(ret->method, 1360 &ret->cipher_list,&ret->cipher_list_by_id, 1361 SSL_DEFAULT_CIPHER_LIST); 1362 if (ret->cipher_list == NULL 1363 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1364 { 1365 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1366 goto err2; 1367 } 1368 1369 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1370 { 1371 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1372 goto err2; 1373 } 1374 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1375 { 1376 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1377 goto err2; 1378 } 1379 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1380 { 1381 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1382 goto err2; 1383 } 1384 1385 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1386 goto err; 1387 1388 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1389 1390 ret->extra_certs=NULL; 1391 ret->comp_methods=SSL_COMP_get_compression_methods(); 1392 1393 return(ret); 1394 err: 1395 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1396 err2: 1397 if (ret != NULL) SSL_CTX_free(ret); 1398 return(NULL); 1399 } 1400 1401 #if 0 1402 static void SSL_COMP_free(SSL_COMP *comp) 1403 { OPENSSL_free(comp); } 1404 #endif 1405 1406 void SSL_CTX_free(SSL_CTX *a) 1407 { 1408 int i; 1409 1410 if (a == NULL) return; 1411 1412 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1413 #ifdef REF_PRINT 1414 REF_PRINT("SSL_CTX",a); 1415 #endif 1416 if (i > 0) return; 1417 #ifdef REF_CHECK 1418 if (i < 0) 1419 { 1420 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1421 abort(); /* ok */ 1422 } 1423 #endif 1424 1425 /* 1426 * Free internal session cache. However: the remove_cb() may reference 1427 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1428 * after the sessions were flushed. 1429 * As the ex_data handling routines might also touch the session cache, 1430 * the most secure solution seems to be: empty (flush) the cache, then 1431 * free ex_data, then finally free the cache. 1432 * (See ticket [openssl.org #212].) 1433 */ 1434 if (a->sessions != NULL) 1435 SSL_CTX_flush_sessions(a,0); 1436 1437 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1438 1439 if (a->sessions != NULL) 1440 lh_free(a->sessions); 1441 1442 if (a->cert_store != NULL) 1443 X509_STORE_free(a->cert_store); 1444 if (a->cipher_list != NULL) 1445 sk_SSL_CIPHER_free(a->cipher_list); 1446 if (a->cipher_list_by_id != NULL) 1447 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1448 if (a->cert != NULL) 1449 ssl_cert_free(a->cert); 1450 if (a->client_CA != NULL) 1451 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1452 if (a->extra_certs != NULL) 1453 sk_X509_pop_free(a->extra_certs,X509_free); 1454 #if 0 /* This should never be done, since it removes a global database */ 1455 if (a->comp_methods != NULL) 1456 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1457 #else 1458 a->comp_methods = NULL; 1459 #endif 1460 OPENSSL_free(a); 1461 } 1462 1463 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1464 { 1465 ctx->default_passwd_callback=cb; 1466 } 1467 1468 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1469 { 1470 ctx->default_passwd_callback_userdata=u; 1471 } 1472 1473 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 1474 { 1475 ctx->app_verify_callback=cb; 1476 ctx->app_verify_arg=arg; 1477 } 1478 1479 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 1480 { 1481 ctx->verify_mode=mode; 1482 ctx->default_verify_callback=cb; 1483 } 1484 1485 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 1486 { 1487 ctx->verify_depth=depth; 1488 } 1489 1490 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher) 1491 { 1492 CERT_PKEY *cpk; 1493 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 1494 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 1495 int rsa_tmp_export,dh_tmp_export,kl; 1496 unsigned long mask,emask; 1497 1498 if (c == NULL) return; 1499 1500 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1501 1502 #ifndef OPENSSL_NO_RSA 1503 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1504 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 1505 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1506 #else 1507 rsa_tmp=rsa_tmp_export=0; 1508 #endif 1509 #ifndef OPENSSL_NO_DH 1510 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1511 dh_tmp_export=(c->dh_tmp_cb != NULL || 1512 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1513 #else 1514 dh_tmp=dh_tmp_export=0; 1515 #endif 1516 1517 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 1518 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 1519 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1520 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1521 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1522 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1523 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1524 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 1525 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1526 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1527 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 1528 /* FIX THIS EAY EAY EAY */ 1529 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1530 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1531 1532 mask=0; 1533 emask=0; 1534 1535 #ifdef CIPHER_DEBUG 1536 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 1537 rsa_tmp,rsa_tmp_export,dh_tmp, 1538 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 1539 #endif 1540 1541 if (rsa_enc || (rsa_tmp && rsa_sign)) 1542 mask|=SSL_kRSA; 1543 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 1544 emask|=SSL_kRSA; 1545 1546 #if 0 1547 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 1548 if ( (dh_tmp || dh_rsa || dh_dsa) && 1549 (rsa_enc || rsa_sign || dsa_sign)) 1550 mask|=SSL_kEDH; 1551 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 1552 (rsa_enc || rsa_sign || dsa_sign)) 1553 emask|=SSL_kEDH; 1554 #endif 1555 1556 if (dh_tmp_export) 1557 emask|=SSL_kEDH; 1558 1559 if (dh_tmp) 1560 mask|=SSL_kEDH; 1561 1562 if (dh_rsa) mask|=SSL_kDHr; 1563 if (dh_rsa_export) emask|=SSL_kDHr; 1564 1565 if (dh_dsa) mask|=SSL_kDHd; 1566 if (dh_dsa_export) emask|=SSL_kDHd; 1567 1568 if (rsa_enc || rsa_sign) 1569 { 1570 mask|=SSL_aRSA; 1571 emask|=SSL_aRSA; 1572 } 1573 1574 if (dsa_sign) 1575 { 1576 mask|=SSL_aDSS; 1577 emask|=SSL_aDSS; 1578 } 1579 1580 mask|=SSL_aNULL; 1581 emask|=SSL_aNULL; 1582 1583 #ifndef OPENSSL_NO_KRB5 1584 mask|=SSL_kKRB5|SSL_aKRB5; 1585 emask|=SSL_kKRB5|SSL_aKRB5; 1586 #endif 1587 1588 c->mask=mask; 1589 c->export_mask=emask; 1590 c->valid=1; 1591 } 1592 1593 /* THIS NEEDS CLEANING UP */ 1594 X509 *ssl_get_server_send_cert(SSL *s) 1595 { 1596 unsigned long alg,mask,kalg; 1597 CERT *c; 1598 int i,is_export; 1599 1600 c=s->cert; 1601 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 1602 alg=s->s3->tmp.new_cipher->algorithms; 1603 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); 1604 mask=is_export?c->export_mask:c->mask; 1605 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK); 1606 1607 if (kalg & SSL_kDHr) 1608 i=SSL_PKEY_DH_RSA; 1609 else if (kalg & SSL_kDHd) 1610 i=SSL_PKEY_DH_DSA; 1611 else if (kalg & SSL_aDSS) 1612 i=SSL_PKEY_DSA_SIGN; 1613 else if (kalg & SSL_aRSA) 1614 { 1615 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 1616 i=SSL_PKEY_RSA_SIGN; 1617 else 1618 i=SSL_PKEY_RSA_ENC; 1619 } 1620 else if (kalg & SSL_aKRB5) 1621 { 1622 /* VRS something else here? */ 1623 return(NULL); 1624 } 1625 else /* if (kalg & SSL_aNULL) */ 1626 { 1627 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR); 1628 return(NULL); 1629 } 1630 if (c->pkeys[i].x509 == NULL) return(NULL); 1631 return(c->pkeys[i].x509); 1632 } 1633 1634 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher) 1635 { 1636 unsigned long alg; 1637 CERT *c; 1638 1639 alg=cipher->algorithms; 1640 c=s->cert; 1641 1642 if ((alg & SSL_aDSS) && 1643 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 1644 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey); 1645 else if (alg & SSL_aRSA) 1646 { 1647 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 1648 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey); 1649 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 1650 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey); 1651 else 1652 return(NULL); 1653 } 1654 else /* if (alg & SSL_aNULL) */ 1655 { 1656 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 1657 return(NULL); 1658 } 1659 } 1660 1661 void ssl_update_cache(SSL *s,int mode) 1662 { 1663 int i; 1664 1665 /* If the session_id_length is 0, we are not supposed to cache it, 1666 * and it would be rather hard to do anyway :-) */ 1667 if (s->session->session_id_length == 0) return; 1668 1669 i=s->ctx->session_cache_mode; 1670 if ((i & mode) && (!s->hit) 1671 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 1672 || SSL_CTX_add_session(s->ctx,s->session)) 1673 && (s->ctx->new_session_cb != NULL)) 1674 { 1675 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 1676 if (!s->ctx->new_session_cb(s,s->session)) 1677 SSL_SESSION_free(s->session); 1678 } 1679 1680 /* auto flush every 255 connections */ 1681 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 1682 ((i & mode) == mode)) 1683 { 1684 if ( (((mode & SSL_SESS_CACHE_CLIENT) 1685 ?s->ctx->stats.sess_connect_good 1686 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff) 1687 { 1688 SSL_CTX_flush_sessions(s->ctx,time(NULL)); 1689 } 1690 } 1691 } 1692 1693 SSL_METHOD *SSL_get_ssl_method(SSL *s) 1694 { 1695 return(s->method); 1696 } 1697 1698 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth) 1699 { 1700 int conn= -1; 1701 int ret=1; 1702 1703 if (s->method != meth) 1704 { 1705 if (s->handshake_func != NULL) 1706 conn=(s->handshake_func == s->method->ssl_connect); 1707 1708 if (s->method->version == meth->version) 1709 s->method=meth; 1710 else 1711 { 1712 s->method->ssl_free(s); 1713 s->method=meth; 1714 ret=s->method->ssl_new(s); 1715 } 1716 1717 if (conn == 1) 1718 s->handshake_func=meth->ssl_connect; 1719 else if (conn == 0) 1720 s->handshake_func=meth->ssl_accept; 1721 } 1722 return(ret); 1723 } 1724 1725 int SSL_get_error(SSL *s,int i) 1726 { 1727 int reason; 1728 unsigned long l; 1729 BIO *bio; 1730 1731 if (i > 0) return(SSL_ERROR_NONE); 1732 1733 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 1734 * etc, where we do encode the error */ 1735 if ((l=ERR_peek_error()) != 0) 1736 { 1737 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 1738 return(SSL_ERROR_SYSCALL); 1739 else 1740 return(SSL_ERROR_SSL); 1741 } 1742 1743 if ((i < 0) && SSL_want_read(s)) 1744 { 1745 bio=SSL_get_rbio(s); 1746 if (BIO_should_read(bio)) 1747 return(SSL_ERROR_WANT_READ); 1748 else if (BIO_should_write(bio)) 1749 /* This one doesn't make too much sense ... We never try 1750 * to write to the rbio, and an application program where 1751 * rbio and wbio are separate couldn't even know what it 1752 * should wait for. 1753 * However if we ever set s->rwstate incorrectly 1754 * (so that we have SSL_want_read(s) instead of 1755 * SSL_want_write(s)) and rbio and wbio *are* the same, 1756 * this test works around that bug; so it might be safer 1757 * to keep it. */ 1758 return(SSL_ERROR_WANT_WRITE); 1759 else if (BIO_should_io_special(bio)) 1760 { 1761 reason=BIO_get_retry_reason(bio); 1762 if (reason == BIO_RR_CONNECT) 1763 return(SSL_ERROR_WANT_CONNECT); 1764 else if (reason == BIO_RR_ACCEPT) 1765 return(SSL_ERROR_WANT_ACCEPT); 1766 else 1767 return(SSL_ERROR_SYSCALL); /* unknown */ 1768 } 1769 } 1770 1771 if ((i < 0) && SSL_want_write(s)) 1772 { 1773 bio=SSL_get_wbio(s); 1774 if (BIO_should_write(bio)) 1775 return(SSL_ERROR_WANT_WRITE); 1776 else if (BIO_should_read(bio)) 1777 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 1778 return(SSL_ERROR_WANT_READ); 1779 else if (BIO_should_io_special(bio)) 1780 { 1781 reason=BIO_get_retry_reason(bio); 1782 if (reason == BIO_RR_CONNECT) 1783 return(SSL_ERROR_WANT_CONNECT); 1784 else if (reason == BIO_RR_ACCEPT) 1785 return(SSL_ERROR_WANT_ACCEPT); 1786 else 1787 return(SSL_ERROR_SYSCALL); 1788 } 1789 } 1790 if ((i < 0) && SSL_want_x509_lookup(s)) 1791 { 1792 return(SSL_ERROR_WANT_X509_LOOKUP); 1793 } 1794 1795 if (i == 0) 1796 { 1797 if (s->version == SSL2_VERSION) 1798 { 1799 /* assume it is the socket being closed */ 1800 return(SSL_ERROR_ZERO_RETURN); 1801 } 1802 else 1803 { 1804 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 1805 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 1806 return(SSL_ERROR_ZERO_RETURN); 1807 } 1808 } 1809 return(SSL_ERROR_SYSCALL); 1810 } 1811 1812 int SSL_do_handshake(SSL *s) 1813 { 1814 int ret=1; 1815 1816 if (s->handshake_func == NULL) 1817 { 1818 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 1819 return(-1); 1820 } 1821 1822 s->method->ssl_renegotiate_check(s); 1823 1824 if (SSL_in_init(s) || SSL_in_before(s)) 1825 { 1826 ret=s->handshake_func(s); 1827 } 1828 return(ret); 1829 } 1830 1831 /* For the next 2 functions, SSL_clear() sets shutdown and so 1832 * one of these calls will reset it */ 1833 void SSL_set_accept_state(SSL *s) 1834 { 1835 s->server=1; 1836 s->shutdown=0; 1837 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 1838 s->handshake_func=s->method->ssl_accept; 1839 /* clear the current cipher */ 1840 ssl_clear_cipher_ctx(s); 1841 } 1842 1843 void SSL_set_connect_state(SSL *s) 1844 { 1845 s->server=0; 1846 s->shutdown=0; 1847 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 1848 s->handshake_func=s->method->ssl_connect; 1849 /* clear the current cipher */ 1850 ssl_clear_cipher_ctx(s); 1851 } 1852 1853 int ssl_undefined_function(SSL *s) 1854 { 1855 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1856 return(0); 1857 } 1858 1859 SSL_METHOD *ssl_bad_method(int ver) 1860 { 1861 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1862 return(NULL); 1863 } 1864 1865 const char *SSL_get_version(SSL *s) 1866 { 1867 if (s->version == TLS1_VERSION) 1868 return("TLSv1"); 1869 else if (s->version == SSL3_VERSION) 1870 return("SSLv3"); 1871 else if (s->version == SSL2_VERSION) 1872 return("SSLv2"); 1873 else 1874 return("unknown"); 1875 } 1876 1877 SSL *SSL_dup(SSL *s) 1878 { 1879 STACK_OF(X509_NAME) *sk; 1880 X509_NAME *xn; 1881 SSL *ret; 1882 int i; 1883 1884 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 1885 return(NULL); 1886 1887 ret->version = s->version; 1888 ret->type = s->type; 1889 ret->method = s->method; 1890 1891 if (s->session != NULL) 1892 { 1893 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 1894 SSL_copy_session_id(ret,s); 1895 } 1896 else 1897 { 1898 /* No session has been established yet, so we have to expect 1899 * that s->cert or ret->cert will be changed later -- 1900 * they should not both point to the same object, 1901 * and thus we can't use SSL_copy_session_id. */ 1902 1903 ret->method->ssl_free(ret); 1904 ret->method = s->method; 1905 ret->method->ssl_new(ret); 1906 1907 if (s->cert != NULL) 1908 { 1909 if (ret->cert != NULL) 1910 { 1911 ssl_cert_free(ret->cert); 1912 } 1913 ret->cert = ssl_cert_dup(s->cert); 1914 if (ret->cert == NULL) 1915 goto err; 1916 } 1917 1918 SSL_set_session_id_context(ret, 1919 s->sid_ctx, s->sid_ctx_length); 1920 } 1921 1922 ret->options=s->options; 1923 ret->mode=s->mode; 1924 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 1925 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 1926 ret->msg_callback = s->msg_callback; 1927 ret->msg_callback_arg = s->msg_callback_arg; 1928 SSL_set_verify(ret,SSL_get_verify_mode(s), 1929 SSL_get_verify_callback(s)); 1930 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 1931 ret->generate_session_id = s->generate_session_id; 1932 1933 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 1934 1935 ret->debug=s->debug; 1936 1937 /* copy app data, a little dangerous perhaps */ 1938 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 1939 goto err; 1940 1941 /* setup rbio, and wbio */ 1942 if (s->rbio != NULL) 1943 { 1944 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 1945 goto err; 1946 } 1947 if (s->wbio != NULL) 1948 { 1949 if (s->wbio != s->rbio) 1950 { 1951 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 1952 goto err; 1953 } 1954 else 1955 ret->wbio=ret->rbio; 1956 } 1957 ret->rwstate = s->rwstate; 1958 ret->in_handshake = s->in_handshake; 1959 ret->handshake_func = s->handshake_func; 1960 ret->server = s->server; 1961 ret->new_session = s->new_session; 1962 ret->quiet_shutdown = s->quiet_shutdown; 1963 ret->shutdown=s->shutdown; 1964 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 1965 ret->rstate=s->rstate; 1966 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 1967 ret->hit=s->hit; 1968 ret->purpose=s->purpose; 1969 ret->trust=s->trust; 1970 1971 /* dup the cipher_list and cipher_list_by_id stacks */ 1972 if (s->cipher_list != NULL) 1973 { 1974 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 1975 goto err; 1976 } 1977 if (s->cipher_list_by_id != NULL) 1978 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 1979 == NULL) 1980 goto err; 1981 1982 /* Dup the client_CA list */ 1983 if (s->client_CA != NULL) 1984 { 1985 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 1986 ret->client_CA=sk; 1987 for (i=0; i<sk_X509_NAME_num(sk); i++) 1988 { 1989 xn=sk_X509_NAME_value(sk,i); 1990 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 1991 { 1992 X509_NAME_free(xn); 1993 goto err; 1994 } 1995 } 1996 } 1997 1998 if (0) 1999 { 2000 err: 2001 if (ret != NULL) SSL_free(ret); 2002 ret=NULL; 2003 } 2004 return(ret); 2005 } 2006 2007 void ssl_clear_cipher_ctx(SSL *s) 2008 { 2009 if (s->enc_read_ctx != NULL) 2010 { 2011 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2012 OPENSSL_free(s->enc_read_ctx); 2013 s->enc_read_ctx=NULL; 2014 } 2015 if (s->enc_write_ctx != NULL) 2016 { 2017 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2018 OPENSSL_free(s->enc_write_ctx); 2019 s->enc_write_ctx=NULL; 2020 } 2021 if (s->expand != NULL) 2022 { 2023 COMP_CTX_free(s->expand); 2024 s->expand=NULL; 2025 } 2026 if (s->compress != NULL) 2027 { 2028 COMP_CTX_free(s->compress); 2029 s->compress=NULL; 2030 } 2031 } 2032 2033 /* Fix this function so that it takes an optional type parameter */ 2034 X509 *SSL_get_certificate(SSL *s) 2035 { 2036 if (s->cert != NULL) 2037 return(s->cert->key->x509); 2038 else 2039 return(NULL); 2040 } 2041 2042 /* Fix this function so that it takes an optional type parameter */ 2043 EVP_PKEY *SSL_get_privatekey(SSL *s) 2044 { 2045 if (s->cert != NULL) 2046 return(s->cert->key->privatekey); 2047 else 2048 return(NULL); 2049 } 2050 2051 SSL_CIPHER *SSL_get_current_cipher(SSL *s) 2052 { 2053 if ((s->session != NULL) && (s->session->cipher != NULL)) 2054 return(s->session->cipher); 2055 return(NULL); 2056 } 2057 2058 int ssl_init_wbio_buffer(SSL *s,int push) 2059 { 2060 BIO *bbio; 2061 2062 if (s->bbio == NULL) 2063 { 2064 bbio=BIO_new(BIO_f_buffer()); 2065 if (bbio == NULL) return(0); 2066 s->bbio=bbio; 2067 } 2068 else 2069 { 2070 bbio=s->bbio; 2071 if (s->bbio == s->wbio) 2072 s->wbio=BIO_pop(s->wbio); 2073 } 2074 (void)BIO_reset(bbio); 2075 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2076 if (!BIO_set_read_buffer_size(bbio,1)) 2077 { 2078 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2079 return(0); 2080 } 2081 if (push) 2082 { 2083 if (s->wbio != bbio) 2084 s->wbio=BIO_push(bbio,s->wbio); 2085 } 2086 else 2087 { 2088 if (s->wbio == bbio) 2089 s->wbio=BIO_pop(bbio); 2090 } 2091 return(1); 2092 } 2093 2094 void ssl_free_wbio_buffer(SSL *s) 2095 { 2096 if (s->bbio == NULL) return; 2097 2098 if (s->bbio == s->wbio) 2099 { 2100 /* remove buffering */ 2101 s->wbio=BIO_pop(s->wbio); 2102 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2103 assert(s->wbio != NULL); 2104 #endif 2105 } 2106 BIO_free(s->bbio); 2107 s->bbio=NULL; 2108 } 2109 2110 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2111 { 2112 ctx->quiet_shutdown=mode; 2113 } 2114 2115 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx) 2116 { 2117 return(ctx->quiet_shutdown); 2118 } 2119 2120 void SSL_set_quiet_shutdown(SSL *s,int mode) 2121 { 2122 s->quiet_shutdown=mode; 2123 } 2124 2125 int SSL_get_quiet_shutdown(SSL *s) 2126 { 2127 return(s->quiet_shutdown); 2128 } 2129 2130 void SSL_set_shutdown(SSL *s,int mode) 2131 { 2132 s->shutdown=mode; 2133 } 2134 2135 int SSL_get_shutdown(SSL *s) 2136 { 2137 return(s->shutdown); 2138 } 2139 2140 int SSL_version(SSL *s) 2141 { 2142 return(s->version); 2143 } 2144 2145 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl) 2146 { 2147 return(ssl->ctx); 2148 } 2149 2150 #ifndef OPENSSL_NO_STDIO 2151 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2152 { 2153 return(X509_STORE_set_default_paths(ctx->cert_store)); 2154 } 2155 2156 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2157 const char *CApath) 2158 { 2159 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 2160 } 2161 #endif 2162 2163 void SSL_set_info_callback(SSL *ssl, 2164 void (*cb)(const SSL *ssl,int type,int val)) 2165 { 2166 ssl->info_callback=cb; 2167 } 2168 2169 void (*SSL_get_info_callback(SSL *ssl))(const SSL *ssl,int type,int val) 2170 { 2171 return ssl->info_callback; 2172 } 2173 2174 int SSL_state(SSL *ssl) 2175 { 2176 return(ssl->state); 2177 } 2178 2179 void SSL_set_verify_result(SSL *ssl,long arg) 2180 { 2181 ssl->verify_result=arg; 2182 } 2183 2184 long SSL_get_verify_result(SSL *ssl) 2185 { 2186 return(ssl->verify_result); 2187 } 2188 2189 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2190 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2191 { 2192 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2193 new_func, dup_func, free_func); 2194 } 2195 2196 int SSL_set_ex_data(SSL *s,int idx,void *arg) 2197 { 2198 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2199 } 2200 2201 void *SSL_get_ex_data(SSL *s,int idx) 2202 { 2203 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2204 } 2205 2206 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2207 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2208 { 2209 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2210 new_func, dup_func, free_func); 2211 } 2212 2213 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 2214 { 2215 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2216 } 2217 2218 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx) 2219 { 2220 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2221 } 2222 2223 int ssl_ok(SSL *s) 2224 { 2225 return(1); 2226 } 2227 2228 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx) 2229 { 2230 return(ctx->cert_store); 2231 } 2232 2233 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 2234 { 2235 if (ctx->cert_store != NULL) 2236 X509_STORE_free(ctx->cert_store); 2237 ctx->cert_store=store; 2238 } 2239 2240 int SSL_want(SSL *s) 2241 { 2242 return(s->rwstate); 2243 } 2244 2245 /*! 2246 * \brief Set the callback for generating temporary RSA keys. 2247 * \param ctx the SSL context. 2248 * \param cb the callback 2249 */ 2250 2251 #ifndef OPENSSL_NO_RSA 2252 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 2253 int is_export, 2254 int keylength)) 2255 { 2256 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb); 2257 } 2258 2259 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 2260 int is_export, 2261 int keylength)) 2262 { 2263 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb); 2264 } 2265 #endif 2266 2267 #ifdef DOXYGEN 2268 /*! 2269 * \brief The RSA temporary key callback function. 2270 * \param ssl the SSL session. 2271 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 2272 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 2273 * of the required key in bits. 2274 * \return the temporary RSA key. 2275 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 2276 */ 2277 2278 RSA *cb(SSL *ssl,int is_export,int keylength) 2279 {} 2280 #endif 2281 2282 /*! 2283 * \brief Set the callback for generating temporary DH keys. 2284 * \param ctx the SSL context. 2285 * \param dh the callback 2286 */ 2287 2288 #ifndef OPENSSL_NO_DH 2289 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 2290 int keylength)) 2291 { 2292 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh); 2293 } 2294 2295 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 2296 int keylength)) 2297 { 2298 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh); 2299 } 2300 #endif 2301 2302 2303 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)) 2304 { 2305 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb); 2306 } 2307 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)) 2308 { 2309 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb); 2310 } 2311 2312 2313 2314 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 2315 #include "../crypto/bio/bss_file.c" 2316 #endif 2317 2318 IMPLEMENT_STACK_OF(SSL_CIPHER) 2319 IMPLEMENT_STACK_OF(SSL_COMP) 2320