s23_srvr.c revision 279264
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 BUF_MEM_free(buf); 196 ret= -1; 197 goto end; 198 } 199 s->init_buf=buf; 200 } 201 202 ssl3_init_finished_mac(s); 203 204 s->state=SSL23_ST_SR_CLNT_HELLO_A; 205 s->ctx->stats.sess_accept++; 206 s->init_num=0; 207 break; 208 209 case SSL23_ST_SR_CLNT_HELLO_A: 210 case SSL23_ST_SR_CLNT_HELLO_B: 211 212 s->shutdown=0; 213 ret=ssl23_get_client_hello(s); 214 if (ret >= 0) cb=NULL; 215 goto end; 216 /* break; */ 217 218 default: 219 SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE); 220 ret= -1; 221 goto end; 222 /* break; */ 223 } 224 225 if ((cb != NULL) && (s->state != state)) 226 { 227 new_state=s->state; 228 s->state=state; 229 cb(s,SSL_CB_ACCEPT_LOOP,1); 230 s->state=new_state; 231 } 232 } 233end: 234 s->in_handshake--; 235 if (cb != NULL) 236 cb(s,SSL_CB_ACCEPT_EXIT,ret); 237 return(ret); 238 } 239 240 241int ssl23_get_client_hello(SSL *s) 242 { 243 char buf_space[11]; /* Request this many bytes in initial read. 244 * We can detect SSL 3.0/TLS 1.0 Client Hellos 245 * ('type == 3') correctly only when the following 246 * is in a single record, which is not guaranteed by 247 * the protocol specification: 248 * Byte Content 249 * 0 type \ 250 * 1/2 version > record header 251 * 3/4 length / 252 * 5 msg_type \ 253 * 6-8 length > Client Hello message 254 * 9/10 client_version / 255 */ 256 char *buf= &(buf_space[0]); 257 unsigned char *p,*d,*d_len,*dd; 258 unsigned int i; 259 unsigned int csl,sil,cl; 260 int n=0,j; 261 int type=0; 262 int v[2]; 263 264 if (s->state == SSL23_ST_SR_CLNT_HELLO_A) 265 { 266 /* read the initial header */ 267 v[0]=v[1]=0; 268 269 if (!ssl3_setup_buffers(s)) goto err; 270 271 n=ssl23_read_bytes(s, sizeof buf_space); 272 if (n != sizeof buf_space) return(n); /* n == -1 || n == 0 */ 273 274 p=s->packet; 275 276 memcpy(buf,p,n); 277 278 if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO)) 279 { 280 /* 281 * SSLv2 header 282 */ 283 if ((p[3] == 0x00) && (p[4] == 0x02)) 284 { 285 v[0]=p[3]; v[1]=p[4]; 286 /* SSLv2 */ 287 if (!(s->options & SSL_OP_NO_SSLv2)) 288 type=1; 289 } 290 else if (p[3] == SSL3_VERSION_MAJOR) 291 { 292 v[0]=p[3]; v[1]=p[4]; 293 /* SSLv3/TLSv1 */ 294 if (p[4] >= TLS1_VERSION_MINOR) 295 { 296 if (p[4] >= TLS1_2_VERSION_MINOR && 297 !(s->options & SSL_OP_NO_TLSv1_2)) 298 { 299 s->version=TLS1_2_VERSION; 300 s->state=SSL23_ST_SR_CLNT_HELLO_B; 301 } 302 else if (p[4] >= TLS1_1_VERSION_MINOR && 303 !(s->options & SSL_OP_NO_TLSv1_1)) 304 { 305 s->version=TLS1_1_VERSION; 306 /* type=2; */ /* done later to survive restarts */ 307 s->state=SSL23_ST_SR_CLNT_HELLO_B; 308 } 309 else if (!(s->options & SSL_OP_NO_TLSv1)) 310 { 311 s->version=TLS1_VERSION; 312 /* type=2; */ /* done later to survive restarts */ 313 s->state=SSL23_ST_SR_CLNT_HELLO_B; 314 } 315 else if (!(s->options & SSL_OP_NO_SSLv3)) 316 { 317 s->version=SSL3_VERSION; 318 /* type=2; */ 319 s->state=SSL23_ST_SR_CLNT_HELLO_B; 320 } 321 else if (!(s->options & SSL_OP_NO_SSLv2)) 322 { 323 type=1; 324 } 325 } 326 else if (!(s->options & SSL_OP_NO_SSLv3)) 327 { 328 s->version=SSL3_VERSION; 329 /* type=2; */ 330 s->state=SSL23_ST_SR_CLNT_HELLO_B; 331 } 332 else if (!(s->options & SSL_OP_NO_SSLv2)) 333 type=1; 334 335 } 336 } 337 else if ((p[0] == SSL3_RT_HANDSHAKE) && 338 (p[1] == SSL3_VERSION_MAJOR) && 339 (p[5] == SSL3_MT_CLIENT_HELLO) && 340 ((p[3] == 0 && p[4] < 5 /* silly record length? */) 341 || (p[9] >= p[1]))) 342 { 343 /* 344 * SSLv3 or tls1 header 345 */ 346 347 v[0]=p[1]; /* major version (= SSL3_VERSION_MAJOR) */ 348 /* We must look at client_version inside the Client Hello message 349 * to get the correct minor version. 350 * However if we have only a pathologically small fragment of the 351 * Client Hello message, this would be difficult, and we'd have 352 * to read more records to find out. 353 * No known SSL 3.0 client fragments ClientHello like this, 354 * so we simply reject such connections to avoid 355 * protocol version downgrade attacks. */ 356 if (p[3] == 0 && p[4] < 6) 357 { 358 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_SMALL); 359 goto err; 360 } 361 /* if major version number > 3 set minor to a value 362 * which will use the highest version 3 we support. 363 * If TLS 2.0 ever appears we will need to revise 364 * this.... 365 */ 366 if (p[9] > SSL3_VERSION_MAJOR) 367 v[1]=0xff; 368 else 369 v[1]=p[10]; /* minor version according to client_version */ 370 if (v[1] >= TLS1_VERSION_MINOR) 371 { 372 if (v[1] >= TLS1_2_VERSION_MINOR && 373 !(s->options & SSL_OP_NO_TLSv1_2)) 374 { 375 s->version=TLS1_2_VERSION; 376 type=3; 377 } 378 else if (v[1] >= TLS1_1_VERSION_MINOR && 379 !(s->options & SSL_OP_NO_TLSv1_1)) 380 { 381 s->version=TLS1_1_VERSION; 382 type=3; 383 } 384 else if (!(s->options & SSL_OP_NO_TLSv1)) 385 { 386 s->version=TLS1_VERSION; 387 type=3; 388 } 389 else if (!(s->options & SSL_OP_NO_SSLv3)) 390 { 391 s->version=SSL3_VERSION; 392 type=3; 393 } 394 } 395 else 396 { 397 /* client requests SSL 3.0 */ 398 if (!(s->options & SSL_OP_NO_SSLv3)) 399 { 400 s->version=SSL3_VERSION; 401 type=3; 402 } 403 else if (!(s->options & SSL_OP_NO_TLSv1)) 404 { 405 /* we won't be able to use TLS of course, 406 * but this will send an appropriate alert */ 407 s->version=TLS1_VERSION; 408 type=3; 409 } 410 } 411 } 412 else if ((strncmp("GET ", (char *)p,4) == 0) || 413 (strncmp("POST ",(char *)p,5) == 0) || 414 (strncmp("HEAD ",(char *)p,5) == 0) || 415 (strncmp("PUT ", (char *)p,4) == 0)) 416 { 417 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTP_REQUEST); 418 goto err; 419 } 420 else if (strncmp("CONNECT",(char *)p,7) == 0) 421 { 422 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTPS_PROXY_REQUEST); 423 goto err; 424 } 425 } 426 427 /* ensure that TLS_MAX_VERSION is up-to-date */ 428 OPENSSL_assert(s->version <= TLS_MAX_VERSION); 429 430#ifdef OPENSSL_FIPS 431 if (FIPS_mode() && (s->version < TLS1_VERSION)) 432 { 433 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, 434 SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 435 goto err; 436 } 437#endif 438 439 if (s->state == SSL23_ST_SR_CLNT_HELLO_B) 440 { 441 /* we have SSLv3/TLSv1 in an SSLv2 header 442 * (other cases skip this state) */ 443 444 type=2; 445 p=s->packet; 446 v[0] = p[3]; /* == SSL3_VERSION_MAJOR */ 447 v[1] = p[4]; 448 449 /* An SSLv3/TLSv1 backwards-compatible CLIENT-HELLO in an SSLv2 450 * header is sent directly on the wire, not wrapped as a TLS 451 * record. It's format is: 452 * Byte Content 453 * 0-1 msg_length 454 * 2 msg_type 455 * 3-4 version 456 * 5-6 cipher_spec_length 457 * 7-8 session_id_length 458 * 9-10 challenge_length 459 * ... ... 460 */ 461 n=((p[0]&0x7f)<<8)|p[1]; 462 if (n > (1024*4)) 463 { 464 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE); 465 goto err; 466 } 467 if (n < 9) 468 { 469 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH); 470 goto err; 471 } 472 473 j=ssl23_read_bytes(s,n+2); 474 /* We previously read 11 bytes, so if j > 0, we must have 475 * j == n+2 == s->packet_length. We have at least 11 valid 476 * packet bytes. */ 477 if (j <= 0) return(j); 478 479 ssl3_finish_mac(s, s->packet+2, s->packet_length-2); 480 if (s->msg_callback) 481 s->msg_callback(0, SSL2_VERSION, 0, s->packet+2, s->packet_length-2, s, s->msg_callback_arg); /* CLIENT-HELLO */ 482 483 p=s->packet; 484 p+=5; 485 n2s(p,csl); 486 n2s(p,sil); 487 n2s(p,cl); 488 d=(unsigned char *)s->init_buf->data; 489 if ((csl+sil+cl+11) != s->packet_length) /* We can't have TLS extensions in SSL 2.0 format 490 * Client Hello, can we? Error condition should be 491 * '>' otherweise */ 492 { 493 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH); 494 goto err; 495 } 496 497 /* record header: msg_type ... */ 498 *(d++) = SSL3_MT_CLIENT_HELLO; 499 /* ... and length (actual value will be written later) */ 500 d_len = d; 501 d += 3; 502 503 /* client_version */ 504 *(d++) = SSL3_VERSION_MAJOR; /* == v[0] */ 505 *(d++) = v[1]; 506 507 /* lets populate the random area */ 508 /* get the challenge_length */ 509 i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl; 510 memset(d,0,SSL3_RANDOM_SIZE); 511 memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i); 512 d+=SSL3_RANDOM_SIZE; 513 514 /* no session-id reuse */ 515 *(d++)=0; 516 517 /* ciphers */ 518 j=0; 519 dd=d; 520 d+=2; 521 for (i=0; i<csl; i+=3) 522 { 523 if (p[i] != 0) continue; 524 *(d++)=p[i+1]; 525 *(d++)=p[i+2]; 526 j+=2; 527 } 528 s2n(j,dd); 529 530 /* COMPRESSION */ 531 *(d++)=1; 532 *(d++)=0; 533 534#if 0 535 /* copy any remaining data with may be extensions */ 536 p = p+csl+sil+cl; 537 while (p < s->packet+s->packet_length) 538 { 539 *(d++)=*(p++); 540 } 541#endif 542 543 i = (d-(unsigned char *)s->init_buf->data) - 4; 544 l2n3((long)i, d_len); 545 546 /* get the data reused from the init_buf */ 547 s->s3->tmp.reuse_message=1; 548 s->s3->tmp.message_type=SSL3_MT_CLIENT_HELLO; 549 s->s3->tmp.message_size=i; 550 } 551 552 /* imaginary new state (for program structure): */ 553 /* s->state = SSL23_SR_CLNT_HELLO_C */ 554 555 if (type == 1) 556 { 557#ifdef OPENSSL_NO_SSL2 558 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 559 goto err; 560#else 561 /* we are talking sslv2 */ 562 /* we need to clean up the SSLv3/TLSv1 setup and put in the 563 * sslv2 stuff. */ 564 565 if (s->s2 == NULL) 566 { 567 if (!ssl2_new(s)) 568 goto err; 569 } 570 else 571 ssl2_clear(s); 572 573 if (s->s3 != NULL) ssl3_free(s); 574 575 if (!BUF_MEM_grow_clean(s->init_buf, 576 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) 577 { 578 goto err; 579 } 580 581 s->state=SSL2_ST_GET_CLIENT_HELLO_A; 582 if (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3) 583 s->s2->ssl2_rollback=0; 584 else 585 /* reject SSL 2.0 session if client supports SSL 3.0 or TLS 1.0 586 * (SSL 3.0 draft/RFC 2246, App. E.2) */ 587 s->s2->ssl2_rollback=1; 588 589 /* setup the n bytes we have read so we get them from 590 * the sslv2 buffer */ 591 s->rstate=SSL_ST_READ_HEADER; 592 s->packet_length=n; 593 s->packet= &(s->s2->rbuf[0]); 594 memcpy(s->packet,buf,n); 595 s->s2->rbuf_left=n; 596 s->s2->rbuf_offs=0; 597 598 s->method=SSLv2_server_method(); 599 s->handshake_func=s->method->ssl_accept; 600#endif 601 } 602 603 if ((type == 2) || (type == 3)) 604 { 605 /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */ 606 const SSL_METHOD *new_method; 607 new_method = ssl23_get_server_method(s->version); 608 if (new_method == NULL) 609 { 610 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 611 goto err; 612 } 613 s->method = new_method; 614 615 if (!ssl_init_wbio_buffer(s,1)) goto err; 616 617 /* we are in this state */ 618 s->state=SSL3_ST_SR_CLNT_HELLO_A; 619 620 if (type == 3) 621 { 622 /* put the 'n' bytes we have read into the input buffer 623 * for SSLv3 */ 624 s->rstate=SSL_ST_READ_HEADER; 625 s->packet_length=n; 626 if (s->s3->rbuf.buf == NULL) 627 if (!ssl3_setup_read_buffer(s)) 628 goto err; 629 630 s->packet= &(s->s3->rbuf.buf[0]); 631 memcpy(s->packet,buf,n); 632 s->s3->rbuf.left=n; 633 s->s3->rbuf.offset=0; 634 } 635 else 636 { 637 s->packet_length=0; 638 s->s3->rbuf.left=0; 639 s->s3->rbuf.offset=0; 640 } 641#if 0 /* ssl3_get_client_hello does this */ 642 s->client_version=(v[0]<<8)|v[1]; 643#endif 644 s->handshake_func=s->method->ssl_accept; 645 } 646 647 if ((type < 1) || (type > 3)) 648 { 649 /* bad, very bad */ 650 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNKNOWN_PROTOCOL); 651 goto err; 652 } 653 s->init_num=0; 654 655 if (buf != buf_space) OPENSSL_free(buf); 656 return(SSL_accept(s)); 657err: 658 if (buf != buf_space) OPENSSL_free(buf); 659 return(-1); 660 } 661