s23_srvr.c revision 89840
1161651Skan/* ssl/s23_srvr.c */ 2161651Skan/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3161651Skan * All rights reserved. 4161651Skan * 5161651Skan * This package is an SSL implementation written 6161651Skan * by Eric Young (eay@cryptsoft.com). 7161651Skan * The implementation was written so as to conform with Netscapes SSL. 8161651Skan * 9161651Skan * This library is free for commercial and non-commercial use as long as 10161651Skan * the following conditions are aheared to. The following conditions 11161651Skan * apply to all code found in this distribution, be it the RC4, RSA, 12161651Skan * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13161651Skan * included with this distribution is covered by the same copyright terms 14161651Skan * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15161651Skan * 16161651Skan * Copyright remains Eric Young's, and as such any Copyright notices in 17161651Skan * the code are not to be removed. 18161651Skan * If this package is used in a product, Eric Young should be given attribution 19161651Skan * as the author of the parts of the library used. 20161651Skan * This can be in the form of a textual message at program startup or 21161651Skan * in documentation (online or textual) provided with the package. 22161651Skan * 23161651Skan * Redistribution and use in source and binary forms, with or without 24161651Skan * modification, are permitted provided that the following conditions 25161651Skan * are met: 26161651Skan * 1. Redistributions of source code must retain the copyright 27161651Skan * notice, this list of conditions and the following disclaimer. 28161651Skan * 2. Redistributions in binary form must reproduce the above copyright 29161651Skan * notice, this list of conditions and the following disclaimer in the 30161651Skan * documentation and/or other materials provided with the distribution. 31161651Skan * 3. All advertising materials mentioning features or use of this software 32161651Skan * must display the following acknowledgement: 33161651Skan * "This product includes cryptographic software written by 34161651Skan * Eric Young (eay@cryptsoft.com)" 35161651Skan * The word 'cryptographic' can be left out if the rouines from the library 36161651Skan * being used are not cryptographic related :-). 37161651Skan * 4. If you include any Windows specific code (or a derivative thereof) from 38161651Skan * the apps directory (application code) you must include an acknowledgement: 39161651Skan * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40161651Skan * 41161651Skan * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42161651Skan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43161651Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44161651Skan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45161651Skan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46161651Skan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47161651Skan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48161651Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49161651Skan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50161651Skan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51161651Skan * SUCH DAMAGE. 52161651Skan * 53161651Skan * The licence and distribution terms for any publically available version or 54161651Skan * derivative of this code cannot be changed. i.e. this code cannot simply be 55161651Skan * copied and put under another distribution licence 56161651Skan * [including the GNU Public Licence.] 57161651Skan * 58161651Skan * $FreeBSD: head/crypto/openssl/ssl/s23_srvr.c 89840 2002-01-27 03:17:13Z kris $ 59161651Skan */ 60161651Skan/* ==================================================================== 61161651Skan * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. 62161651Skan * 63161651Skan * Redistribution and use in source and binary forms, with or without 64161651Skan * modification, are permitted provided that the following conditions 65161651Skan * are met: 66161651Skan * 67161651Skan * 1. Redistributions of source code must retain the above copyright 68161651Skan * notice, this list of conditions and the following disclaimer. 69161651Skan * 70161651Skan * 2. Redistributions in binary form must reproduce the above copyright 71161651Skan * notice, this list of conditions and the following disclaimer in 72161651Skan * the documentation and/or other materials provided with the 73161651Skan * distribution. 74161651Skan * 75161651Skan * 3. All advertising materials mentioning features or use of this 76161651Skan * software must display the following acknowledgment: 77161651Skan * "This product includes software developed by the OpenSSL Project 78161651Skan * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 79161651Skan * 80161651Skan * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 81161651Skan * endorse or promote products derived from this software without 82161651Skan * prior written permission. For written permission, please contact 83161651Skan * openssl-core@openssl.org. 84161651Skan * 85161651Skan * 5. Products derived from this software may not be called "OpenSSL" 86161651Skan * nor may "OpenSSL" appear in their names without prior written 87161651Skan * permission of the OpenSSL Project. 88161651Skan * 89161651Skan * 6. Redistributions of any form whatsoever must retain the following 90161651Skan * acknowledgment: 91161651Skan * "This product includes software developed by the OpenSSL Project 92161651Skan * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 93161651Skan * 94161651Skan * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 95161651Skan * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96161651Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 97161651Skan * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 98161651Skan * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 99161651Skan * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 100161651Skan * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 101161651Skan * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102161651Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 103161651Skan * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 104161651Skan * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 105161651Skan * OF THE POSSIBILITY OF SUCH DAMAGE. 106161651Skan * ==================================================================== 107161651Skan * 108161651Skan * This product includes cryptographic software written by Eric Young 109161651Skan * (eay@cryptsoft.com). This product includes software written by Tim 110161651Skan * Hudson (tjh@cryptsoft.com). 111161651Skan * 112161651Skan */ 113161651Skan 114161651Skan#include <stdio.h> 115161651Skan#include <openssl/buffer.h> 116161651Skan#include <openssl/rand.h> 117161651Skan#include <openssl/objects.h> 118161651Skan#include <openssl/evp.h> 119161651Skan#include "ssl_locl.h" 120161651Skan 121161651Skanstatic SSL_METHOD *ssl23_get_server_method(int ver); 122161651Skanint ssl23_get_client_hello(SSL *s); 123161651Skanstatic SSL_METHOD *ssl23_get_server_method(int ver) 124161651Skan { 125161651Skan#ifndef NO_SSL2 126161651Skan if (ver == SSL2_VERSION) 127161651Skan return(SSLv2_server_method()); 128161651Skan#endif 129161651Skan if (ver == SSL3_VERSION) 130161651Skan return(SSLv3_server_method()); 131161651Skan else if (ver == TLS1_VERSION) 132161651Skan return(TLSv1_server_method()); 133161651Skan else 134161651Skan return(NULL); 135161651Skan } 136161651Skan 137161651SkanSSL_METHOD *SSLv23_server_method(void) 138161651Skan { 139161651Skan static int init=1; 140161651Skan static SSL_METHOD SSLv23_server_data; 141161651Skan 142161651Skan if (init) 143161651Skan { 144161651Skan memcpy((char *)&SSLv23_server_data, 145161651Skan (char *)sslv23_base_method(),sizeof(SSL_METHOD)); 146161651Skan SSLv23_server_data.ssl_accept=ssl23_accept; 147161651Skan SSLv23_server_data.get_ssl_method=ssl23_get_server_method; 148161651Skan init=0; 149161651Skan } 150161651Skan return(&SSLv23_server_data); 151161651Skan } 152161651Skan 153161651Skanint ssl23_accept(SSL *s) 154161651Skan { 155161651Skan BUF_MEM *buf; 156161651Skan unsigned long Time=time(NULL); 157161651Skan void (*cb)()=NULL; 158161651Skan int ret= -1; 159161651Skan int new_state,state; 160161651Skan 161161651Skan RAND_add(&Time,sizeof(Time),0); 162161651Skan ERR_clear_error(); 163161651Skan clear_sys_error(); 164161651Skan 165161651Skan if (s->info_callback != NULL) 166161651Skan cb=s->info_callback; 167161651Skan else if (s->ctx->info_callback != NULL) 168161651Skan cb=s->ctx->info_callback; 169161651Skan 170161651Skan s->in_handshake++; 171161651Skan if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); 172161651Skan 173161651Skan for (;;) 174161651Skan { 175161651Skan state=s->state; 176161651Skan 177161651Skan switch(s->state) 178161651Skan { 179161651Skan case SSL_ST_BEFORE: 180161651Skan case SSL_ST_ACCEPT: 181161651Skan case SSL_ST_BEFORE|SSL_ST_ACCEPT: 182161651Skan case SSL_ST_OK|SSL_ST_ACCEPT: 183161651Skan 184161651Skan s->server=1; 185161651Skan if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); 186161651Skan 187161651Skan /* s->version=SSL3_VERSION; */ 188161651Skan s->type=SSL_ST_ACCEPT; 189161651Skan 190161651Skan if (s->init_buf == NULL) 191161651Skan { 192161651Skan if ((buf=BUF_MEM_new()) == NULL) 193161651Skan { 194161651Skan ret= -1; 195161651Skan goto end; 196161651Skan } 197161651Skan if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) 198161651Skan { 199161651Skan ret= -1; 200161651Skan goto end; 201161651Skan } 202161651Skan s->init_buf=buf; 203161651Skan } 204161651Skan 205161651Skan ssl3_init_finished_mac(s); 206161651Skan 207161651Skan s->state=SSL23_ST_SR_CLNT_HELLO_A; 208161651Skan s->ctx->stats.sess_accept++; 209161651Skan s->init_num=0; 210161651Skan break; 211161651Skan 212161651Skan case SSL23_ST_SR_CLNT_HELLO_A: 213161651Skan case SSL23_ST_SR_CLNT_HELLO_B: 214161651Skan 215161651Skan s->shutdown=0; 216161651Skan ret=ssl23_get_client_hello(s); 217161651Skan if (ret >= 0) cb=NULL; 218161651Skan goto end; 219161651Skan /* break; */ 220 221 default: 222 SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE); 223 ret= -1; 224 goto end; 225 /* break; */ 226 } 227 228 if ((cb != NULL) && (s->state != state)) 229 { 230 new_state=s->state; 231 s->state=state; 232 cb(s,SSL_CB_ACCEPT_LOOP,1); 233 s->state=new_state; 234 } 235 } 236end: 237 s->in_handshake--; 238 if (cb != NULL) 239 cb(s,SSL_CB_ACCEPT_EXIT,ret); 240 return(ret); 241 } 242 243 244int ssl23_get_client_hello(SSL *s) 245 { 246 char buf_space[11]; /* Request this many bytes in initial read. 247 * We can detect SSL 3.0/TLS 1.0 Client Hellos 248 * ('type == 3') correctly only when the following 249 * is in a single record, which is not guaranteed by 250 * the protocol specification: 251 * Byte Content 252 * 0 type \ 253 * 1/2 version > record header 254 * 3/4 length / 255 * 5 msg_type \ 256 * 6-8 length > Client Hello message 257 * 9/10 client_version / 258 */ 259 char *buf= &(buf_space[0]); 260 unsigned char *p,*d,*dd; 261 unsigned int i; 262 unsigned int csl,sil,cl; 263 int n=0,j; 264 int type=0; 265 int v[2]; 266#ifndef NO_RSA 267 int use_sslv2_strong=0; 268#endif 269 270 if (s->state == SSL23_ST_SR_CLNT_HELLO_A) 271 { 272 /* read the initial header */ 273 v[0]=v[1]=0; 274 275 if (!ssl3_setup_buffers(s)) goto err; 276 277 n=ssl23_read_bytes(s, sizeof buf_space); 278 if (n != sizeof buf_space) return(n); /* n == -1 || n == 0 */ 279 280 p=s->packet; 281 282 memcpy(buf,p,n); 283 284 if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO)) 285 { 286 /* 287 * SSLv2 header 288 */ 289 if ((p[3] == 0x00) && (p[4] == 0x02)) 290 { 291 v[0]=p[3]; v[1]=p[4]; 292 /* SSLv2 */ 293 if (!(s->options & SSL_OP_NO_SSLv2)) 294 type=1; 295 } 296 else if (p[3] == SSL3_VERSION_MAJOR) 297 { 298 v[0]=p[3]; v[1]=p[4]; 299 /* SSLv3/TLSv1 */ 300 if (p[4] >= TLS1_VERSION_MINOR) 301 { 302 if (!(s->options & SSL_OP_NO_TLSv1)) 303 { 304 s->version=TLS1_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_SSLv3)) 309 { 310 s->version=SSL3_VERSION; 311 /* type=2; */ 312 s->state=SSL23_ST_SR_CLNT_HELLO_B; 313 } 314 else if (!(s->options & SSL_OP_NO_SSLv2)) 315 { 316 type=1; 317 } 318 } 319 else if (!(s->options & SSL_OP_NO_SSLv3)) 320 { 321 s->version=SSL3_VERSION; 322 /* type=2; */ 323 s->state=SSL23_ST_SR_CLNT_HELLO_B; 324 } 325 else if (!(s->options & SSL_OP_NO_SSLv2)) 326 type=1; 327 328 if (s->options & SSL_OP_NON_EXPORT_FIRST) 329 /* Not only utterly confusing, but broken 330 * ('fractured programming'?) -- the details 331 * of this block nearly make it work 332 * as intended in this environment, but on one 333 * of the fine points (w.r.t. restarts) it fails. 334 * The obvious fix would be even more devastating 335 * to program structure; if you want the functionality, 336 * throw this away and implement it in a way 337 * that makes sense */ 338 { 339#if 0 340 STACK_OF(SSL_CIPHER) *sk; 341 SSL_CIPHER *c; 342 int ne2,ne3; 343 344 j=((p[0]&0x7f)<<8)|p[1]; 345 if (j > (1024*4)) 346 { 347 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE); 348 goto err; 349 } 350 351 n=ssl23_read_bytes(s,j+2); 352 if (n <= 0) return(n); 353 p=s->packet; 354 355 if ((buf=OPENSSL_malloc(n)) == NULL) 356 { 357 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,ERR_R_MALLOC_FAILURE); 358 goto err; 359 } 360 memcpy(buf,p,n); 361 362 p+=5; 363 n2s(p,csl); 364 p+=4; 365 366 sk=ssl_bytes_to_cipher_list( 367 s,p,csl,NULL); 368 if (sk != NULL) 369 { 370 ne2=ne3=0; 371 for (j=0; j<sk_SSL_CIPHER_num(sk); j++) 372 { 373 c=sk_SSL_CIPHER_value(sk,j); 374 if (!SSL_C_IS_EXPORT(c)) 375 { 376 if ((c->id>>24L) == 2L) 377 ne2=1; 378 else 379 ne3=1; 380 } 381 } 382 if (ne2 && !ne3) 383 { 384 type=1; 385 use_sslv2_strong=1; 386 goto next_bit; 387 } 388 } 389#else 390 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_OPTION); 391 goto err; 392#endif 393 } 394 } 395 } 396 else if ((p[0] == SSL3_RT_HANDSHAKE) && 397 (p[1] == SSL3_VERSION_MAJOR) && 398 (p[5] == SSL3_MT_CLIENT_HELLO) && 399 ((p[3] == 0 && p[4] < 5 /* silly record length? */) 400 || (p[9] == p[1]))) 401 { 402 /* 403 * SSLv3 or tls1 header 404 */ 405 406 v[0]=p[1]; /* major version (= SSL3_VERSION_MAJOR) */ 407 /* We must look at client_version inside the Client Hello message 408 * to get the correct minor version. 409 * However if we have only a pathologically small fragment of the 410 * Client Hello message, this would be difficult, and we'd have 411 * to read more records to find out. 412 * No known SSL 3.0 client fragments ClientHello like this, 413 * so we simply assume TLS 1.0 to avoid protocol version downgrade 414 * attacks. */ 415 if (p[3] == 0 && p[4] < 6) 416 { 417#if 0 418 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_SMALL); 419 goto err; 420#else 421 v[1] = TLS1_VERSION_MINOR; 422#endif 423 } 424 else 425 v[1]=p[10]; /* minor version according to client_version */ 426 if (v[1] >= TLS1_VERSION_MINOR) 427 { 428 if (!(s->options & SSL_OP_NO_TLSv1)) 429 { 430 s->version=TLS1_VERSION; 431 type=3; 432 } 433 else if (!(s->options & SSL_OP_NO_SSLv3)) 434 { 435 s->version=SSL3_VERSION; 436 type=3; 437 } 438 } 439 else 440 { 441 /* client requests SSL 3.0 */ 442 if (!(s->options & SSL_OP_NO_SSLv3)) 443 { 444 s->version=SSL3_VERSION; 445 type=3; 446 } 447 else if (!(s->options & SSL_OP_NO_TLSv1)) 448 { 449 /* we won't be able to use TLS of course, 450 * but this will send an appropriate alert */ 451 s->version=TLS1_VERSION; 452 type=3; 453 } 454 } 455 } 456 else if ((strncmp("GET ", (char *)p,4) == 0) || 457 (strncmp("POST ",(char *)p,5) == 0) || 458 (strncmp("HEAD ",(char *)p,5) == 0) || 459 (strncmp("PUT ", (char *)p,4) == 0)) 460 { 461 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTP_REQUEST); 462 goto err; 463 } 464 else if (strncmp("CONNECT",(char *)p,7) == 0) 465 { 466 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTPS_PROXY_REQUEST); 467 goto err; 468 } 469 } 470 471 if (s->state == SSL23_ST_SR_CLNT_HELLO_B) 472 { 473 /* we have SSLv3/TLSv1 in an SSLv2 header 474 * (other cases skip this state) */ 475 476 type=2; 477 p=s->packet; 478 v[0] = p[3]; /* == SSL3_VERSION_MAJOR */ 479 v[1] = p[4]; 480 481 n=((p[0]&0x7f)<<8)|p[1]; 482 if (n > (1024*4)) 483 { 484 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE); 485 goto err; 486 } 487 488 j=ssl23_read_bytes(s,n+2); 489 if (j <= 0) return(j); 490 491 ssl3_finish_mac(s,&(s->packet[2]),s->packet_length-2); 492 493 p=s->packet; 494 p+=5; 495 n2s(p,csl); 496 n2s(p,sil); 497 n2s(p,cl); 498 d=(unsigned char *)s->init_buf->data; 499 if ((csl+sil+cl+11) != s->packet_length) 500 { 501 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH); 502 goto err; 503 } 504 505 *(d++) = SSL3_VERSION_MAJOR; /* == v[0] */ 506 *(d++) = v[1]; 507 508 /* lets populate the random area */ 509 /* get the challenge_length */ 510 i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl; 511 memset(d,0,SSL3_RANDOM_SIZE); 512 memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i); 513 d+=SSL3_RANDOM_SIZE; 514 515 /* no session-id reuse */ 516 *(d++)=0; 517 518 /* ciphers */ 519 j=0; 520 dd=d; 521 d+=2; 522 for (i=0; i<csl; i+=3) 523 { 524 if (p[i] != 0) continue; 525 *(d++)=p[i+1]; 526 *(d++)=p[i+2]; 527 j+=2; 528 } 529 s2n(j,dd); 530 531 /* COMPRESSION */ 532 *(d++)=1; 533 *(d++)=0; 534 535 i=(d-(unsigned char *)s->init_buf->data); 536 537 /* get the data reused from the init_buf */ 538 s->s3->tmp.reuse_message=1; 539 s->s3->tmp.message_type=SSL3_MT_CLIENT_HELLO; 540 s->s3->tmp.message_size=i; 541 } 542 543 /* imaginary new state (for program structure): */ 544 /* s->state = SSL23_SR_CLNT_HELLO_C */ 545 546 if (type == 1) 547 { 548#ifdef NO_SSL2 549 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 550 goto err; 551#else 552 /* we are talking sslv2 */ 553 /* we need to clean up the SSLv3/TLSv1 setup and put in the 554 * sslv2 stuff. */ 555 556 if (s->s2 == NULL) 557 { 558 if (!ssl2_new(s)) 559 goto err; 560 } 561 else 562 ssl2_clear(s); 563 564 if (s->s3 != NULL) ssl3_free(s); 565 566 if (!BUF_MEM_grow(s->init_buf, 567 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) 568 { 569 goto err; 570 } 571 572 s->state=SSL2_ST_GET_CLIENT_HELLO_A; 573 if ((s->options & SSL_OP_MSIE_SSLV2_RSA_PADDING) || 574 use_sslv2_strong || 575 (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3)) 576 s->s2->ssl2_rollback=0; 577 else 578 /* reject SSL 2.0 session if client supports SSL 3.0 or TLS 1.0 579 * (SSL 3.0 draft/RFC 2246, App. E.2) */ 580 s->s2->ssl2_rollback=1; 581 582 /* setup the n bytes we have read so we get them from 583 * the sslv2 buffer */ 584 s->rstate=SSL_ST_READ_HEADER; 585 s->packet_length=n; 586 s->packet= &(s->s2->rbuf[0]); 587 memcpy(s->packet,buf,n); 588 s->s2->rbuf_left=n; 589 s->s2->rbuf_offs=0; 590 591 s->method=SSLv2_server_method(); 592 s->handshake_func=s->method->ssl_accept; 593#endif 594 } 595 596 if ((type == 2) || (type == 3)) 597 { 598 /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */ 599 600 if (!ssl_init_wbio_buffer(s,1)) goto err; 601 602 /* we are in this state */ 603 s->state=SSL3_ST_SR_CLNT_HELLO_A; 604 605 if (type == 3) 606 { 607 /* put the 'n' bytes we have read into the input buffer 608 * for SSLv3 */ 609 s->rstate=SSL_ST_READ_HEADER; 610 s->packet_length=n; 611 s->packet= &(s->s3->rbuf.buf[0]); 612 memcpy(s->packet,buf,n); 613 s->s3->rbuf.left=n; 614 s->s3->rbuf.offset=0; 615 } 616 else 617 { 618 s->packet_length=0; 619 s->s3->rbuf.left=0; 620 s->s3->rbuf.offset=0; 621 } 622 623 if (s->version == TLS1_VERSION) 624 s->method = TLSv1_server_method(); 625 else 626 s->method = SSLv3_server_method(); 627#if 0 /* ssl3_get_client_hello does this */ 628 s->client_version=(v[0]<<8)|v[1]; 629#endif 630 s->handshake_func=s->method->ssl_accept; 631 } 632 633 if ((type < 1) || (type > 3)) 634 { 635 /* bad, very bad */ 636 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNKNOWN_PROTOCOL); 637 goto err; 638 } 639 s->init_num=0; 640 641 if (buf != buf_space) OPENSSL_free(buf); 642 s->first_packet=1; 643 return(SSL_accept(s)); 644err: 645 if (buf != buf_space) OPENSSL_free(buf); 646 return(-1); 647 } 648