1/* ssl/s23_srvr.c */ 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 "ssl_locl.h" 114#include <openssl/buffer.h> 115#include <openssl/rand.h> 116#include <openssl/objects.h> 117#include <openssl/evp.h> 118#ifdef OPENSSL_FIPS 119#include <openssl/fips.h> 120#endif 121 122static const SSL_METHOD *ssl23_get_server_method(int ver); 123int ssl23_get_client_hello(SSL *s); 124static const SSL_METHOD *ssl23_get_server_method(int ver) 125 { 126#ifndef OPENSSL_NO_SSL2 127 if (ver == SSL2_VERSION) 128 return(SSLv2_server_method()); 129#endif 130#ifndef OPENSSL_NO_SSL3 131 if (ver == SSL3_VERSION) 132 return(SSLv3_server_method()); 133#endif 134 if (ver == TLS1_VERSION) 135 return(TLSv1_server_method()); 136 else if (ver == TLS1_1_VERSION) 137 return(TLSv1_1_server_method()); 138 else if (ver == TLS1_2_VERSION) 139 return(TLSv1_2_server_method()); 140 else 141 return(NULL); 142 } 143 144IMPLEMENT_ssl23_meth_func(SSLv23_server_method, 145 ssl23_accept, 146 ssl_undefined_function, 147 ssl23_get_server_method) 148 149int ssl23_accept(SSL *s) 150 { 151 BUF_MEM *buf; 152 unsigned long Time=(unsigned long)time(NULL); 153 void (*cb)(const SSL *ssl,int type,int val)=NULL; 154 int ret= -1; 155 int new_state,state; 156 157 RAND_add(&Time,sizeof(Time),0); 158 ERR_clear_error(); 159 clear_sys_error(); 160 161 if (s->info_callback != NULL) 162 cb=s->info_callback; 163 else if (s->ctx->info_callback != NULL) 164 cb=s->ctx->info_callback; 165 166 s->in_handshake++; 167 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); 168 169 for (;;) 170 { 171 state=s->state; 172 173 switch(s->state) 174 { 175 case SSL_ST_BEFORE: 176 case SSL_ST_ACCEPT: 177 case SSL_ST_BEFORE|SSL_ST_ACCEPT: 178 case SSL_ST_OK|SSL_ST_ACCEPT: 179 180 s->server=1; 181 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); 182 183 /* s->version=SSL3_VERSION; */ 184 s->type=SSL_ST_ACCEPT; 185 186 if (s->init_buf == NULL) 187 { 188 if ((buf=BUF_MEM_new()) == NULL) 189 { 190 ret= -1; 191 goto end; 192 } 193 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) 194 { 195 ret= -1; 196 goto end; 197 } 198 s->init_buf=buf; 199 } 200 201 ssl3_init_finished_mac(s); 202 203 s->state=SSL23_ST_SR_CLNT_HELLO_A; 204 s->ctx->stats.sess_accept++; 205 s->init_num=0; 206 break; 207 208 case SSL23_ST_SR_CLNT_HELLO_A: 209 case SSL23_ST_SR_CLNT_HELLO_B: 210 211 s->shutdown=0; 212 ret=ssl23_get_client_hello(s); 213 if (ret >= 0) cb=NULL; 214 goto end; 215 /* break; */ 216 217 default: 218 SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE); 219 ret= -1; 220 goto end; 221 /* break; */ 222 } 223 224 if ((cb != NULL) && (s->state != state)) 225 { 226 new_state=s->state; 227 s->state=state; 228 cb(s,SSL_CB_ACCEPT_LOOP,1); 229 s->state=new_state; 230 } 231 } 232end: 233 s->in_handshake--; 234 if (cb != NULL) 235 cb(s,SSL_CB_ACCEPT_EXIT,ret); 236 return(ret); 237 } 238 239 240int ssl23_get_client_hello(SSL *s) 241 { 242 char buf_space[11]; /* Request this many bytes in initial read. 243 * We can detect SSL 3.0/TLS 1.0 Client Hellos 244 * ('type == 3') correctly only when the following 245 * is in a single record, which is not guaranteed by 246 * the protocol specification: 247 * Byte Content 248 * 0 type \ 249 * 1/2 version > record header 250 * 3/4 length / 251 * 5 msg_type \ 252 * 6-8 length > Client Hello message 253 * 9/10 client_version / 254 */ 255 char *buf= &(buf_space[0]); 256 unsigned char *p,*d,*d_len,*dd; 257 unsigned int i; 258 unsigned int csl,sil,cl; 259 int n=0,j; 260 int type=0; 261 int v[2]; 262 263 if (s->state == SSL23_ST_SR_CLNT_HELLO_A) 264 { 265 /* read the initial header */ 266 v[0]=v[1]=0; 267 268 if (!ssl3_setup_buffers(s)) goto err; 269 270 n=ssl23_read_bytes(s, sizeof buf_space); 271 if (n != sizeof buf_space) return(n); /* n == -1 || n == 0 */ 272 273 p=s->packet; 274 275 memcpy(buf,p,n); 276 277 if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO)) 278 { 279 /* 280 * SSLv2 header 281 */ 282 if ((p[3] == 0x00) && (p[4] == 0x02)) 283 { 284 v[0]=p[3]; v[1]=p[4]; 285 /* SSLv2 */ 286 if (!(s->options & SSL_OP_NO_SSLv2)) 287 type=1; 288 } 289 else if (p[3] == SSL3_VERSION_MAJOR) 290 { 291 v[0]=p[3]; v[1]=p[4]; 292 /* SSLv3/TLSv1 */ 293 if (p[4] >= TLS1_VERSION_MINOR) 294 { 295 if (p[4] >= TLS1_2_VERSION_MINOR && 296 !(s->options & SSL_OP_NO_TLSv1_2)) 297 { 298 s->version=TLS1_2_VERSION; 299 s->state=SSL23_ST_SR_CLNT_HELLO_B; 300 } 301 else if (p[4] >= TLS1_1_VERSION_MINOR && 302 !(s->options & SSL_OP_NO_TLSv1_1)) 303 { 304 s->version=TLS1_1_VERSION; 305 /* type=2; */ /* done later to survive restarts */ 306 s->state=SSL23_ST_SR_CLNT_HELLO_B; 307 } 308 else if (!(s->options & SSL_OP_NO_TLSv1)) 309 { 310 s->version=TLS1_VERSION; 311 /* type=2; */ /* done later to survive restarts */ 312 s->state=SSL23_ST_SR_CLNT_HELLO_B; 313 } 314 else if (!(s->options & SSL_OP_NO_SSLv3)) 315 { 316 s->version=SSL3_VERSION; 317 /* type=2; */ 318 s->state=SSL23_ST_SR_CLNT_HELLO_B; 319 } 320 else if (!(s->options & SSL_OP_NO_SSLv2)) 321 { 322 type=1; 323 } 324 } 325 else if (!(s->options & SSL_OP_NO_SSLv3)) 326 { 327 s->version=SSL3_VERSION; 328 /* type=2; */ 329 s->state=SSL23_ST_SR_CLNT_HELLO_B; 330 } 331 else if (!(s->options & SSL_OP_NO_SSLv2)) 332 type=1; 333 334 } 335 } 336 else if ((p[0] == SSL3_RT_HANDSHAKE) && 337 (p[1] == SSL3_VERSION_MAJOR) && 338 (p[5] == SSL3_MT_CLIENT_HELLO) && 339 ((p[3] == 0 && p[4] < 5 /* silly record length? */) 340 || (p[9] >= p[1]))) 341 { 342 /* 343 * SSLv3 or tls1 header 344 */ 345 346 v[0]=p[1]; /* major version (= SSL3_VERSION_MAJOR) */ 347 /* We must look at client_version inside the Client Hello message 348 * to get the correct minor version. 349 * However if we have only a pathologically small fragment of the 350 * Client Hello message, this would be difficult, and we'd have 351 * to read more records to find out. 352 * No known SSL 3.0 client fragments ClientHello like this, 353 * so we simply reject such connections to avoid 354 * protocol version downgrade attacks. */ 355 if (p[3] == 0 && p[4] < 6) 356 { 357 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_SMALL); 358 goto err; 359 } 360 /* if major version number > 3 set minor to a value 361 * which will use the highest version 3 we support. 362 * If TLS 2.0 ever appears we will need to revise 363 * this.... 364 */ 365 if (p[9] > SSL3_VERSION_MAJOR) 366 v[1]=0xff; 367 else 368 v[1]=p[10]; /* minor version according to client_version */ 369 if (v[1] >= TLS1_VERSION_MINOR) 370 { 371 if (v[1] >= TLS1_2_VERSION_MINOR && 372 !(s->options & SSL_OP_NO_TLSv1_2)) 373 { 374 s->version=TLS1_2_VERSION; 375 type=3; 376 } 377 else if (v[1] >= TLS1_1_VERSION_MINOR && 378 !(s->options & SSL_OP_NO_TLSv1_1)) 379 { 380 s->version=TLS1_1_VERSION; 381 type=3; 382 } 383 else if (!(s->options & SSL_OP_NO_TLSv1)) 384 { 385 s->version=TLS1_VERSION; 386 type=3; 387 } 388 else if (!(s->options & SSL_OP_NO_SSLv3)) 389 { 390 s->version=SSL3_VERSION; 391 type=3; 392 } 393 } 394 else 395 { 396 /* client requests SSL 3.0 */ 397 if (!(s->options & SSL_OP_NO_SSLv3)) 398 { 399 s->version=SSL3_VERSION; 400 type=3; 401 } 402 else if (!(s->options & SSL_OP_NO_TLSv1)) 403 { 404 /* we won't be able to use TLS of course, 405 * but this will send an appropriate alert */ 406 s->version=TLS1_VERSION; 407 type=3; 408 } 409 } 410 } 411 else if ((strncmp("GET ", (char *)p,4) == 0) || 412 (strncmp("POST ",(char *)p,5) == 0) || 413 (strncmp("HEAD ",(char *)p,5) == 0) || 414 (strncmp("PUT ", (char *)p,4) == 0)) 415 { 416 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTP_REQUEST); 417 goto err; 418 } 419 else if (strncmp("CONNECT",(char *)p,7) == 0) 420 { 421 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTPS_PROXY_REQUEST); 422 goto err; 423 } 424 } 425 426 /* ensure that TLS_MAX_VERSION is up-to-date */ 427 OPENSSL_assert(s->version <= TLS_MAX_VERSION); 428 429#ifdef OPENSSL_FIPS 430 if (FIPS_mode() && (s->version < TLS1_VERSION)) 431 { 432 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, 433 SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 434 goto err; 435 } 436#endif 437 438 if (s->state == SSL23_ST_SR_CLNT_HELLO_B) 439 { 440 /* we have SSLv3/TLSv1 in an SSLv2 header 441 * (other cases skip this state) */ 442 443 type=2; 444 p=s->packet; 445 v[0] = p[3]; /* == SSL3_VERSION_MAJOR */ 446 v[1] = p[4]; 447 448 /* An SSLv3/TLSv1 backwards-compatible CLIENT-HELLO in an SSLv2 449 * header is sent directly on the wire, not wrapped as a TLS 450 * record. It's format is: 451 * Byte Content 452 * 0-1 msg_length 453 * 2 msg_type 454 * 3-4 version 455 * 5-6 cipher_spec_length 456 * 7-8 session_id_length 457 * 9-10 challenge_length 458 * ... ... 459 */ 460 n=((p[0]&0x7f)<<8)|p[1]; 461 if (n > (1024*4)) 462 { 463 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE); 464 goto err; 465 } 466 if (n < 9) 467 { 468 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH); 469 goto err; 470 } 471 472 j=ssl23_read_bytes(s,n+2); 473 /* We previously read 11 bytes, so if j > 0, we must have 474 * j == n+2 == s->packet_length. We have at least 11 valid 475 * packet bytes. */ 476 if (j <= 0) return(j); 477 478 ssl3_finish_mac(s, s->packet+2, s->packet_length-2); 479 if (s->msg_callback) 480 s->msg_callback(0, SSL2_VERSION, 0, s->packet+2, s->packet_length-2, s, s->msg_callback_arg); /* CLIENT-HELLO */ 481 482 p=s->packet; 483 p+=5; 484 n2s(p,csl); 485 n2s(p,sil); 486 n2s(p,cl); 487 d=(unsigned char *)s->init_buf->data; 488 if ((csl+sil+cl+11) != s->packet_length) /* We can't have TLS extensions in SSL 2.0 format 489 * Client Hello, can we? Error condition should be 490 * '>' otherweise */ 491 { 492 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH); 493 goto err; 494 } 495 496 /* record header: msg_type ... */ 497 *(d++) = SSL3_MT_CLIENT_HELLO; 498 /* ... and length (actual value will be written later) */ 499 d_len = d; 500 d += 3; 501 502 /* client_version */ 503 *(d++) = SSL3_VERSION_MAJOR; /* == v[0] */ 504 *(d++) = v[1]; 505 506 /* lets populate the random area */ 507 /* get the challenge_length */ 508 i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl; 509 memset(d,0,SSL3_RANDOM_SIZE); 510 memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i); 511 d+=SSL3_RANDOM_SIZE; 512 513 /* no session-id reuse */ 514 *(d++)=0; 515 516 /* ciphers */ 517 j=0; 518 dd=d; 519 d+=2; 520 for (i=0; i<csl; i+=3) 521 { 522 if (p[i] != 0) continue; 523 *(d++)=p[i+1]; 524 *(d++)=p[i+2]; 525 j+=2; 526 } 527 s2n(j,dd); 528 529 /* COMPRESSION */ 530 *(d++)=1; 531 *(d++)=0; 532 533#if 0 534 /* copy any remaining data with may be extensions */ 535 p = p+csl+sil+cl; 536 while (p < s->packet+s->packet_length) 537 { 538 *(d++)=*(p++); 539 } 540#endif 541 542 i = (d-(unsigned char *)s->init_buf->data) - 4; 543 l2n3((long)i, d_len); 544 545 /* get the data reused from the init_buf */ 546 s->s3->tmp.reuse_message=1; 547 s->s3->tmp.message_type=SSL3_MT_CLIENT_HELLO; 548 s->s3->tmp.message_size=i; 549 } 550 551 /* imaginary new state (for program structure): */ 552 /* s->state = SSL23_SR_CLNT_HELLO_C */ 553 554 if (type == 1) 555 { 556#ifdef OPENSSL_NO_SSL2 557 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 558 goto err; 559#else 560 /* we are talking sslv2 */ 561 /* we need to clean up the SSLv3/TLSv1 setup and put in the 562 * sslv2 stuff. */ 563 564 if (s->s2 == NULL) 565 { 566 if (!ssl2_new(s)) 567 goto err; 568 } 569 else 570 ssl2_clear(s); 571 572 if (s->s3 != NULL) ssl3_free(s); 573 574 if (!BUF_MEM_grow_clean(s->init_buf, 575 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) 576 { 577 goto err; 578 } 579 580 s->state=SSL2_ST_GET_CLIENT_HELLO_A; 581 if (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3) 582 s->s2->ssl2_rollback=0; 583 else 584 /* reject SSL 2.0 session if client supports SSL 3.0 or TLS 1.0 585 * (SSL 3.0 draft/RFC 2246, App. E.2) */ 586 s->s2->ssl2_rollback=1; 587 588 /* setup the n bytes we have read so we get them from 589 * the sslv2 buffer */ 590 s->rstate=SSL_ST_READ_HEADER; 591 s->packet_length=n; 592 s->packet= &(s->s2->rbuf[0]); 593 memcpy(s->packet,buf,n); 594 s->s2->rbuf_left=n; 595 s->s2->rbuf_offs=0; 596 597 s->method=SSLv2_server_method(); 598 s->handshake_func=s->method->ssl_accept; 599#endif 600 } 601 602 if ((type == 2) || (type == 3)) 603 { 604 /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */ 605 s->method = ssl23_get_server_method(s->version); 606 if (s->method == NULL) 607 { 608 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 609 goto err; 610 } 611 612 if (!ssl_init_wbio_buffer(s,1)) goto err; 613 614 /* we are in this state */ 615 s->state=SSL3_ST_SR_CLNT_HELLO_A; 616 617 if (type == 3) 618 { 619 /* put the 'n' bytes we have read into the input buffer 620 * for SSLv3 */ 621 s->rstate=SSL_ST_READ_HEADER; 622 s->packet_length=n; 623 if (s->s3->rbuf.buf == NULL) 624 if (!ssl3_setup_read_buffer(s)) 625 goto err; 626 627 s->packet= &(s->s3->rbuf.buf[0]); 628 memcpy(s->packet,buf,n); 629 s->s3->rbuf.left=n; 630 s->s3->rbuf.offset=0; 631 } 632 else 633 { 634 s->packet_length=0; 635 s->s3->rbuf.left=0; 636 s->s3->rbuf.offset=0; 637 } 638#if 0 /* ssl3_get_client_hello does this */ 639 s->client_version=(v[0]<<8)|v[1]; 640#endif 641 s->handshake_func=s->method->ssl_accept; 642 } 643 644 if ((type < 1) || (type > 3)) 645 { 646 /* bad, very bad */ 647 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNKNOWN_PROTOCOL); 648 goto err; 649 } 650 s->init_num=0; 651 652 if (buf != buf_space) OPENSSL_free(buf); 653 return(SSL_accept(s)); 654err: 655 if (buf != buf_space) OPENSSL_free(buf); 656 return(-1); 657 } 658