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