s_cb.c revision 279264
1/* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 112#include <stdio.h> 113#include <stdlib.h> 114#define USE_SOCKETS 115#define NON_MAIN 116#include "apps.h" 117#undef NON_MAIN 118#undef USE_SOCKETS 119#include <openssl/err.h> 120#include <openssl/rand.h> 121#include <openssl/x509.h> 122#include <openssl/ssl.h> 123#include "s_apps.h" 124 125#define COOKIE_SECRET_LENGTH 16 126 127int verify_depth=0; 128int verify_error=X509_V_OK; 129int verify_return_error=0; 130unsigned char cookie_secret[COOKIE_SECRET_LENGTH]; 131int cookie_initialized=0; 132 133int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx) 134 { 135 X509 *err_cert; 136 int err,depth; 137 138 err_cert=X509_STORE_CTX_get_current_cert(ctx); 139 err= X509_STORE_CTX_get_error(ctx); 140 depth= X509_STORE_CTX_get_error_depth(ctx); 141 142 BIO_printf(bio_err,"depth=%d ",depth); 143 if (err_cert) 144 { 145 X509_NAME_print_ex(bio_err, X509_get_subject_name(err_cert), 146 0, XN_FLAG_ONELINE); 147 BIO_puts(bio_err, "\n"); 148 } 149 else 150 BIO_puts(bio_err, "<no cert>\n"); 151 if (!ok) 152 { 153 BIO_printf(bio_err,"verify error:num=%d:%s\n",err, 154 X509_verify_cert_error_string(err)); 155 if (verify_depth >= depth) 156 { 157 if (!verify_return_error) 158 ok=1; 159 verify_error=X509_V_OK; 160 } 161 else 162 { 163 ok=0; 164 verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG; 165 } 166 } 167 switch (err) 168 { 169 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: 170 BIO_puts(bio_err,"issuer= "); 171 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert), 172 0, XN_FLAG_ONELINE); 173 BIO_puts(bio_err, "\n"); 174 break; 175 case X509_V_ERR_CERT_NOT_YET_VALID: 176 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: 177 BIO_printf(bio_err,"notBefore="); 178 ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert)); 179 BIO_printf(bio_err,"\n"); 180 break; 181 case X509_V_ERR_CERT_HAS_EXPIRED: 182 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: 183 BIO_printf(bio_err,"notAfter="); 184 ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert)); 185 BIO_printf(bio_err,"\n"); 186 break; 187 case X509_V_ERR_NO_EXPLICIT_POLICY: 188 policies_print(bio_err, ctx); 189 break; 190 } 191 if (err == X509_V_OK && ok == 2) 192 policies_print(bio_err, ctx); 193 194 BIO_printf(bio_err,"verify return:%d\n",ok); 195 return(ok); 196 } 197 198int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file) 199 { 200 if (cert_file != NULL) 201 { 202 /* 203 SSL *ssl; 204 X509 *x509; 205 */ 206 207 if (SSL_CTX_use_certificate_file(ctx,cert_file, 208 SSL_FILETYPE_PEM) <= 0) 209 { 210 BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file); 211 ERR_print_errors(bio_err); 212 return(0); 213 } 214 if (key_file == NULL) key_file=cert_file; 215 if (SSL_CTX_use_PrivateKey_file(ctx,key_file, 216 SSL_FILETYPE_PEM) <= 0) 217 { 218 BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file); 219 ERR_print_errors(bio_err); 220 return(0); 221 } 222 223 /* 224 In theory this is no longer needed 225 ssl=SSL_new(ctx); 226 x509=SSL_get_certificate(ssl); 227 228 if (x509 != NULL) { 229 EVP_PKEY *pktmp; 230 pktmp = X509_get_pubkey(x509); 231 EVP_PKEY_copy_parameters(pktmp, 232 SSL_get_privatekey(ssl)); 233 EVP_PKEY_free(pktmp); 234 } 235 SSL_free(ssl); 236 */ 237 238 /* If we are using DSA, we can copy the parameters from 239 * the private key */ 240 241 242 /* Now we know that a key and cert have been set against 243 * the SSL context */ 244 if (!SSL_CTX_check_private_key(ctx)) 245 { 246 BIO_printf(bio_err,"Private key does not match the certificate public key\n"); 247 return(0); 248 } 249 } 250 return(1); 251 } 252 253int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key) 254 { 255 if (cert == NULL) 256 return 1; 257 if (SSL_CTX_use_certificate(ctx,cert) <= 0) 258 { 259 BIO_printf(bio_err,"error setting certificate\n"); 260 ERR_print_errors(bio_err); 261 return 0; 262 } 263 if (SSL_CTX_use_PrivateKey(ctx,key) <= 0) 264 { 265 BIO_printf(bio_err,"error setting private key\n"); 266 ERR_print_errors(bio_err); 267 return 0; 268 } 269 270 271 /* Now we know that a key and cert have been set against 272 * the SSL context */ 273 if (!SSL_CTX_check_private_key(ctx)) 274 { 275 BIO_printf(bio_err,"Private key does not match the certificate public key\n"); 276 return 0; 277 } 278 return 1; 279 } 280 281long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp, 282 int argi, long argl, long ret) 283 { 284 BIO *out; 285 286 out=(BIO *)BIO_get_callback_arg(bio); 287 if (out == NULL) return(ret); 288 289 if (cmd == (BIO_CB_READ|BIO_CB_RETURN)) 290 { 291 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n", 292 (void *)bio,argp,(unsigned long)argi,ret,ret); 293 BIO_dump(out,argp,(int)ret); 294 return(ret); 295 } 296 else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN)) 297 { 298 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n", 299 (void *)bio,argp,(unsigned long)argi,ret,ret); 300 BIO_dump(out,argp,(int)ret); 301 } 302 return(ret); 303 } 304 305void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret) 306 { 307 const char *str; 308 int w; 309 310 w=where& ~SSL_ST_MASK; 311 312 if (w & SSL_ST_CONNECT) str="SSL_connect"; 313 else if (w & SSL_ST_ACCEPT) str="SSL_accept"; 314 else str="undefined"; 315 316 if (where & SSL_CB_LOOP) 317 { 318 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s)); 319 } 320 else if (where & SSL_CB_ALERT) 321 { 322 str=(where & SSL_CB_READ)?"read":"write"; 323 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n", 324 str, 325 SSL_alert_type_string_long(ret), 326 SSL_alert_desc_string_long(ret)); 327 } 328 else if (where & SSL_CB_EXIT) 329 { 330 if (ret == 0) 331 BIO_printf(bio_err,"%s:failed in %s\n", 332 str,SSL_state_string_long(s)); 333 else if (ret < 0) 334 { 335 BIO_printf(bio_err,"%s:error in %s\n", 336 str,SSL_state_string_long(s)); 337 } 338 } 339 } 340 341 342void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg) 343 { 344 BIO *bio = arg; 345 const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= ""; 346 347 str_write_p = write_p ? ">>>" : "<<<"; 348 349 switch (version) 350 { 351 case SSL2_VERSION: 352 str_version = "SSL 2.0"; 353 break; 354 case SSL3_VERSION: 355 str_version = "SSL 3.0 "; 356 break; 357 case TLS1_VERSION: 358 str_version = "TLS 1.0 "; 359 break; 360 case TLS1_1_VERSION: 361 str_version = "TLS 1.1 "; 362 break; 363 case TLS1_2_VERSION: 364 str_version = "TLS 1.2 "; 365 break; 366 case DTLS1_VERSION: 367 str_version = "DTLS 1.0 "; 368 break; 369 case DTLS1_BAD_VER: 370 str_version = "DTLS 1.0 (bad) "; 371 break; 372 default: 373 str_version = "???"; 374 } 375 376 if (version == SSL2_VERSION) 377 { 378 str_details1 = "???"; 379 380 if (len > 0) 381 { 382 switch (((const unsigned char*)buf)[0]) 383 { 384 case 0: 385 str_details1 = ", ERROR:"; 386 str_details2 = " ???"; 387 if (len >= 3) 388 { 389 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2]; 390 391 switch (err) 392 { 393 case 0x0001: 394 str_details2 = " NO-CIPHER-ERROR"; 395 break; 396 case 0x0002: 397 str_details2 = " NO-CERTIFICATE-ERROR"; 398 break; 399 case 0x0004: 400 str_details2 = " BAD-CERTIFICATE-ERROR"; 401 break; 402 case 0x0006: 403 str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR"; 404 break; 405 } 406 } 407 408 break; 409 case 1: 410 str_details1 = ", CLIENT-HELLO"; 411 break; 412 case 2: 413 str_details1 = ", CLIENT-MASTER-KEY"; 414 break; 415 case 3: 416 str_details1 = ", CLIENT-FINISHED"; 417 break; 418 case 4: 419 str_details1 = ", SERVER-HELLO"; 420 break; 421 case 5: 422 str_details1 = ", SERVER-VERIFY"; 423 break; 424 case 6: 425 str_details1 = ", SERVER-FINISHED"; 426 break; 427 case 7: 428 str_details1 = ", REQUEST-CERTIFICATE"; 429 break; 430 case 8: 431 str_details1 = ", CLIENT-CERTIFICATE"; 432 break; 433 } 434 } 435 } 436 437 if (version == SSL3_VERSION || 438 version == TLS1_VERSION || 439 version == TLS1_1_VERSION || 440 version == TLS1_2_VERSION || 441 version == DTLS1_VERSION || 442 version == DTLS1_BAD_VER) 443 { 444 switch (content_type) 445 { 446 case 20: 447 str_content_type = "ChangeCipherSpec"; 448 break; 449 case 21: 450 str_content_type = "Alert"; 451 break; 452 case 22: 453 str_content_type = "Handshake"; 454 break; 455 } 456 457 if (content_type == 21) /* Alert */ 458 { 459 str_details1 = ", ???"; 460 461 if (len == 2) 462 { 463 switch (((const unsigned char*)buf)[0]) 464 { 465 case 1: 466 str_details1 = ", warning"; 467 break; 468 case 2: 469 str_details1 = ", fatal"; 470 break; 471 } 472 473 str_details2 = " ???"; 474 switch (((const unsigned char*)buf)[1]) 475 { 476 case 0: 477 str_details2 = " close_notify"; 478 break; 479 case 10: 480 str_details2 = " unexpected_message"; 481 break; 482 case 20: 483 str_details2 = " bad_record_mac"; 484 break; 485 case 21: 486 str_details2 = " decryption_failed"; 487 break; 488 case 22: 489 str_details2 = " record_overflow"; 490 break; 491 case 30: 492 str_details2 = " decompression_failure"; 493 break; 494 case 40: 495 str_details2 = " handshake_failure"; 496 break; 497 case 42: 498 str_details2 = " bad_certificate"; 499 break; 500 case 43: 501 str_details2 = " unsupported_certificate"; 502 break; 503 case 44: 504 str_details2 = " certificate_revoked"; 505 break; 506 case 45: 507 str_details2 = " certificate_expired"; 508 break; 509 case 46: 510 str_details2 = " certificate_unknown"; 511 break; 512 case 47: 513 str_details2 = " illegal_parameter"; 514 break; 515 case 48: 516 str_details2 = " unknown_ca"; 517 break; 518 case 49: 519 str_details2 = " access_denied"; 520 break; 521 case 50: 522 str_details2 = " decode_error"; 523 break; 524 case 51: 525 str_details2 = " decrypt_error"; 526 break; 527 case 60: 528 str_details2 = " export_restriction"; 529 break; 530 case 70: 531 str_details2 = " protocol_version"; 532 break; 533 case 71: 534 str_details2 = " insufficient_security"; 535 break; 536 case 80: 537 str_details2 = " internal_error"; 538 break; 539 case 90: 540 str_details2 = " user_canceled"; 541 break; 542 case 100: 543 str_details2 = " no_renegotiation"; 544 break; 545 case 110: 546 str_details2 = " unsupported_extension"; 547 break; 548 case 111: 549 str_details2 = " certificate_unobtainable"; 550 break; 551 case 112: 552 str_details2 = " unrecognized_name"; 553 break; 554 case 113: 555 str_details2 = " bad_certificate_status_response"; 556 break; 557 case 114: 558 str_details2 = " bad_certificate_hash_value"; 559 break; 560 case 115: 561 str_details2 = " unknown_psk_identity"; 562 break; 563 } 564 } 565 } 566 567 if (content_type == 22) /* Handshake */ 568 { 569 str_details1 = "???"; 570 571 if (len > 0) 572 { 573 switch (((const unsigned char*)buf)[0]) 574 { 575 case 0: 576 str_details1 = ", HelloRequest"; 577 break; 578 case 1: 579 str_details1 = ", ClientHello"; 580 break; 581 case 2: 582 str_details1 = ", ServerHello"; 583 break; 584 case 3: 585 str_details1 = ", HelloVerifyRequest"; 586 break; 587 case 11: 588 str_details1 = ", Certificate"; 589 break; 590 case 12: 591 str_details1 = ", ServerKeyExchange"; 592 break; 593 case 13: 594 str_details1 = ", CertificateRequest"; 595 break; 596 case 14: 597 str_details1 = ", ServerHelloDone"; 598 break; 599 case 15: 600 str_details1 = ", CertificateVerify"; 601 break; 602 case 16: 603 str_details1 = ", ClientKeyExchange"; 604 break; 605 case 20: 606 str_details1 = ", Finished"; 607 break; 608 } 609 } 610 } 611 612#ifndef OPENSSL_NO_HEARTBEATS 613 if (content_type == 24) /* Heartbeat */ 614 { 615 str_details1 = ", Heartbeat"; 616 617 if (len > 0) 618 { 619 switch (((const unsigned char*)buf)[0]) 620 { 621 case 1: 622 str_details1 = ", HeartbeatRequest"; 623 break; 624 case 2: 625 str_details1 = ", HeartbeatResponse"; 626 break; 627 } 628 } 629 } 630#endif 631 } 632 633 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, str_content_type, (unsigned long)len, str_details1, str_details2); 634 635 if (len > 0) 636 { 637 size_t num, i; 638 639 BIO_printf(bio, " "); 640 num = len; 641#if 0 642 if (num > 16) 643 num = 16; 644#endif 645 for (i = 0; i < num; i++) 646 { 647 if (i % 16 == 0 && i > 0) 648 BIO_printf(bio, "\n "); 649 BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]); 650 } 651 if (i < len) 652 BIO_printf(bio, " ..."); 653 BIO_printf(bio, "\n"); 654 } 655 (void)BIO_flush(bio); 656 } 657 658void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type, 659 unsigned char *data, int len, 660 void *arg) 661 { 662 BIO *bio = arg; 663 char *extname; 664 665 switch(type) 666 { 667 case TLSEXT_TYPE_server_name: 668 extname = "server name"; 669 break; 670 671 case TLSEXT_TYPE_max_fragment_length: 672 extname = "max fragment length"; 673 break; 674 675 case TLSEXT_TYPE_client_certificate_url: 676 extname = "client certificate URL"; 677 break; 678 679 case TLSEXT_TYPE_trusted_ca_keys: 680 extname = "trusted CA keys"; 681 break; 682 683 case TLSEXT_TYPE_truncated_hmac: 684 extname = "truncated HMAC"; 685 break; 686 687 case TLSEXT_TYPE_status_request: 688 extname = "status request"; 689 break; 690 691 case TLSEXT_TYPE_user_mapping: 692 extname = "user mapping"; 693 break; 694 695 case TLSEXT_TYPE_client_authz: 696 extname = "client authz"; 697 break; 698 699 case TLSEXT_TYPE_server_authz: 700 extname = "server authz"; 701 break; 702 703 case TLSEXT_TYPE_cert_type: 704 extname = "cert type"; 705 break; 706 707 case TLSEXT_TYPE_elliptic_curves: 708 extname = "elliptic curves"; 709 break; 710 711 case TLSEXT_TYPE_ec_point_formats: 712 extname = "EC point formats"; 713 break; 714 715 case TLSEXT_TYPE_srp: 716 extname = "SRP"; 717 break; 718 719 case TLSEXT_TYPE_signature_algorithms: 720 extname = "signature algorithms"; 721 break; 722 723 case TLSEXT_TYPE_use_srtp: 724 extname = "use SRTP"; 725 break; 726 727 case TLSEXT_TYPE_heartbeat: 728 extname = "heartbeat"; 729 break; 730 731 case TLSEXT_TYPE_session_ticket: 732 extname = "session ticket"; 733 break; 734 735 case TLSEXT_TYPE_renegotiate: 736 extname = "renegotiation info"; 737 break; 738 739#ifdef TLSEXT_TYPE_opaque_prf_input 740 case TLSEXT_TYPE_opaque_prf_input: 741 extname = "opaque PRF input"; 742 break; 743#endif 744#ifdef TLSEXT_TYPE_next_proto_neg 745 case TLSEXT_TYPE_next_proto_neg: 746 extname = "next protocol"; 747 break; 748#endif 749 750 case TLSEXT_TYPE_padding: 751 extname = "TLS padding"; 752 break; 753 754 default: 755 extname = "unknown"; 756 break; 757 758 } 759 760 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n", 761 client_server ? "server": "client", 762 extname, type, len); 763 BIO_dump(bio, (char *)data, len); 764 (void)BIO_flush(bio); 765 } 766 767int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len) 768 { 769 unsigned char *buffer, result[EVP_MAX_MD_SIZE]; 770 unsigned int length, resultlength; 771 union { 772 struct sockaddr sa; 773 struct sockaddr_in s4; 774#if OPENSSL_USE_IPV6 775 struct sockaddr_in6 s6; 776#endif 777 } peer; 778 779 /* Initialize a random secret */ 780 if (!cookie_initialized) 781 { 782 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH)) 783 { 784 BIO_printf(bio_err,"error setting random cookie secret\n"); 785 return 0; 786 } 787 cookie_initialized = 1; 788 } 789 790 /* Read peer information */ 791 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer); 792 793 /* Create buffer with peer's address and port */ 794 length = 0; 795 switch (peer.sa.sa_family) 796 { 797 case AF_INET: 798 length += sizeof(struct in_addr); 799 length += sizeof(peer.s4.sin_port); 800 break; 801#if OPENSSL_USE_IPV6 802 case AF_INET6: 803 length += sizeof(struct in6_addr); 804 length += sizeof(peer.s6.sin6_port); 805 break; 806#endif 807 default: 808 OPENSSL_assert(0); 809 break; 810 } 811 buffer = OPENSSL_malloc(length); 812 813 if (buffer == NULL) 814 { 815 BIO_printf(bio_err,"out of memory\n"); 816 return 0; 817 } 818 819 switch (peer.sa.sa_family) 820 { 821 case AF_INET: 822 memcpy(buffer, 823 &peer.s4.sin_port, 824 sizeof(peer.s4.sin_port)); 825 memcpy(buffer + sizeof(peer.s4.sin_port), 826 &peer.s4.sin_addr, 827 sizeof(struct in_addr)); 828 break; 829#if OPENSSL_USE_IPV6 830 case AF_INET6: 831 memcpy(buffer, 832 &peer.s6.sin6_port, 833 sizeof(peer.s6.sin6_port)); 834 memcpy(buffer + sizeof(peer.s6.sin6_port), 835 &peer.s6.sin6_addr, 836 sizeof(struct in6_addr)); 837 break; 838#endif 839 default: 840 OPENSSL_assert(0); 841 break; 842 } 843 844 /* Calculate HMAC of buffer using the secret */ 845 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH, 846 buffer, length, result, &resultlength); 847 OPENSSL_free(buffer); 848 849 memcpy(cookie, result, resultlength); 850 *cookie_len = resultlength; 851 852 return 1; 853 } 854 855int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len) 856 { 857 unsigned char *buffer, result[EVP_MAX_MD_SIZE]; 858 unsigned int length, resultlength; 859 union { 860 struct sockaddr sa; 861 struct sockaddr_in s4; 862#if OPENSSL_USE_IPV6 863 struct sockaddr_in6 s6; 864#endif 865 } peer; 866 867 /* If secret isn't initialized yet, the cookie can't be valid */ 868 if (!cookie_initialized) 869 return 0; 870 871 /* Read peer information */ 872 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer); 873 874 /* Create buffer with peer's address and port */ 875 length = 0; 876 switch (peer.sa.sa_family) 877 { 878 case AF_INET: 879 length += sizeof(struct in_addr); 880 length += sizeof(peer.s4.sin_port); 881 break; 882#if OPENSSL_USE_IPV6 883 case AF_INET6: 884 length += sizeof(struct in6_addr); 885 length += sizeof(peer.s6.sin6_port); 886 break; 887#endif 888 default: 889 OPENSSL_assert(0); 890 break; 891 } 892 buffer = OPENSSL_malloc(length); 893 894 if (buffer == NULL) 895 { 896 BIO_printf(bio_err,"out of memory\n"); 897 return 0; 898 } 899 900 switch (peer.sa.sa_family) 901 { 902 case AF_INET: 903 memcpy(buffer, 904 &peer.s4.sin_port, 905 sizeof(peer.s4.sin_port)); 906 memcpy(buffer + sizeof(peer.s4.sin_port), 907 &peer.s4.sin_addr, 908 sizeof(struct in_addr)); 909 break; 910#if OPENSSL_USE_IPV6 911 case AF_INET6: 912 memcpy(buffer, 913 &peer.s6.sin6_port, 914 sizeof(peer.s6.sin6_port)); 915 memcpy(buffer + sizeof(peer.s6.sin6_port), 916 &peer.s6.sin6_addr, 917 sizeof(struct in6_addr)); 918 break; 919#endif 920 default: 921 OPENSSL_assert(0); 922 break; 923 } 924 925 /* Calculate HMAC of buffer using the secret */ 926 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH, 927 buffer, length, result, &resultlength); 928 OPENSSL_free(buffer); 929 930 if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0) 931 return 1; 932 933 return 0; 934 } 935