1 /* ssl/s23_srvr.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 (at) 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 (at) cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh (at) 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 121 122 static const SSL_METHOD *ssl23_get_server_method(int ver); 123 int ssl23_get_client_hello(SSL *s); 124 static 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 if (ver == SSL3_VERSION) 131 return(SSLv3_server_method()); 132 else if (ver == TLS1_VERSION) 133 return(TLSv1_server_method()); 134 else if (ver == TLS1_1_VERSION) 135 return(TLSv1_1_server_method()); 136 else if (ver == TLS1_2_VERSION) 137 return(TLSv1_2_server_method()); 138 else 139 return(NULL); 140 } 141 142 IMPLEMENT_ssl23_meth_func(SSLv23_server_method, 143 ssl23_accept, 144 ssl_undefined_function, 145 ssl23_get_server_method) 146 147 int ssl23_accept(SSL *s) 148 { 149 BUF_MEM *buf; 150 unsigned long Time=(unsigned long)time(NULL); 151 void (*cb)(const SSL *ssl,int type,int val)=NULL; 152 int ret= -1; 153 int new_state,state; 154 155 RAND_add(&Time,sizeof(Time),0); 156 ERR_clear_error(); 157 clear_sys_error(); 158 159 if (s->info_callback != NULL) 160 cb=s->info_callback; 161 else if (s->ctx->info_callback != NULL) 162 cb=s->ctx->info_callback; 163 164 s->in_handshake++; 165 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); 166 167 for (;;) 168 { 169 state=s->state; 170 171 switch(s->state) 172 { 173 case SSL_ST_BEFORE: 174 case SSL_ST_ACCEPT: 175 case SSL_ST_BEFORE|SSL_ST_ACCEPT: 176 case SSL_ST_OK|SSL_ST_ACCEPT: 177 178 s->server=1; 179 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); 180 181 /* s->version=SSL3_VERSION; */ 182 s->type=SSL_ST_ACCEPT; 183 184 if (s->init_buf == NULL) 185 { 186 if ((buf=BUF_MEM_new()) == NULL) 187 { 188 ret= -1; 189 goto end; 190 } 191 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) 192 { 193 ret= -1; 194 goto end; 195 } 196 s->init_buf=buf; 197 } 198 199 ssl3_init_finished_mac(s); 200 201 s->state=SSL23_ST_SR_CLNT_HELLO_A; 202 s->ctx->stats.sess_accept++; 203 s->init_num=0; 204 break; 205 206 case SSL23_ST_SR_CLNT_HELLO_A: 207 case SSL23_ST_SR_CLNT_HELLO_B: 208 209 s->shutdown=0; 210 ret=ssl23_get_client_hello(s); 211 if (ret >= 0) cb=NULL; 212 goto end; 213 /* break; */ 214 215 default: 216 SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE); 217 ret= -1; 218 goto end; 219 /* break; */ 220 } 221 222 if ((cb != NULL) && (s->state != state)) 223 { 224 new_state=s->state; 225 s->state=state; 226 cb(s,SSL_CB_ACCEPT_LOOP,1); 227 s->state=new_state; 228 } 229 } 230 end: 231 s->in_handshake--; 232 if (cb != NULL) 233 cb(s,SSL_CB_ACCEPT_EXIT,ret); 234 return(ret); 235 } 236 237 238 int ssl23_get_client_hello(SSL *s) 239 { 240 char buf_space[11]; /* Request this many bytes in initial read. 241 * We can detect SSL 3.0/TLS 1.0 Client Hellos 242 * ('type == 3') correctly only when the following 243 * is in a single record, which is not guaranteed by 244 * the protocol specification: 245 * Byte Content 246 * 0 type \ 247 * 1/2 version > record header 248 * 3/4 length / 249 * 5 msg_type \ 250 * 6-8 length > Client Hello message 251 * 9/10 client_version / 252 */ 253 char *buf= &(buf_space[0]); 254 unsigned char *p,*d,*d_len,*dd; 255 unsigned int i; 256 unsigned int csl,sil,cl; 257 int n=0,j; 258 int type=0; 259 int v[2]; 260 261 if (s->state == SSL23_ST_SR_CLNT_HELLO_A) 262 { 263 /* read the initial header */ 264 v[0]=v[1]=0; 265 266 if (!ssl3_setup_buffers(s)) goto err; 267 268 n=ssl23_read_bytes(s, sizeof buf_space); 269 if (n != sizeof buf_space) return(n); /* n == -1 || n == 0 */ 270 271 p=s->packet; 272 273 memcpy(buf,p,n); 274 275 if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO)) 276 { 277 /* 278 * SSLv2 header 279 */ 280 if ((p[3] == 0x00) && (p[4] == 0x02)) 281 { 282 v[0]=p[3]; v[1]=p[4]; 283 /* SSLv2 */ 284 if (!(s->options & SSL_OP_NO_SSLv2)) 285 type=1; 286 } 287 else if (p[3] == SSL3_VERSION_MAJOR) 288 { 289 v[0]=p[3]; v[1]=p[4]; 290 /* SSLv3/TLSv1 */ 291 if (p[4] >= TLS1_VERSION_MINOR) 292 { 293 if (p[4] >= TLS1_2_VERSION_MINOR && 294 !(s->options & SSL_OP_NO_TLSv1_2)) 295 { 296 s->version=TLS1_2_VERSION; 297 s->state=SSL23_ST_SR_CLNT_HELLO_B; 298 } 299 else if (p[4] >= TLS1_1_VERSION_MINOR && 300 !(s->options & SSL_OP_NO_TLSv1_1)) 301 { 302 s->version=TLS1_1_VERSION; 303 /* type=2; */ /* done later to survive restarts */ 304 s->state=SSL23_ST_SR_CLNT_HELLO_B; 305 } 306 else if (!(s->options & SSL_OP_NO_TLSv1)) 307 { 308 s->version=TLS1_VERSION; 309 /* type=2; */ /* done later to survive restarts */ 310 s->state=SSL23_ST_SR_CLNT_HELLO_B; 311 } 312 else if (!(s->options & SSL_OP_NO_SSLv3)) 313 { 314 s->version=SSL3_VERSION; 315 /* type=2; */ 316 s->state=SSL23_ST_SR_CLNT_HELLO_B; 317 } 318 else if (!(s->options & SSL_OP_NO_SSLv2)) 319 { 320 type=1; 321 } 322 } 323 else if (!(s->options & SSL_OP_NO_SSLv3)) 324 { 325 s->version=SSL3_VERSION; 326 /* type=2; */ 327 s->state=SSL23_ST_SR_CLNT_HELLO_B; 328 } 329 else if (!(s->options & SSL_OP_NO_SSLv2)) 330 type=1; 331 332 } 333 } 334 else if ((p[0] == SSL3_RT_HANDSHAKE) && 335 (p[1] == SSL3_VERSION_MAJOR) && 336 (p[5] == SSL3_MT_CLIENT_HELLO) && 337 ((p[3] == 0 && p[4] < 5 /* silly record length? */) 338 || (p[9] >= p[1]))) 339 { 340 /* 341 * SSLv3 or tls1 header 342 */ 343 344 v[0]=p[1]; /* major version (= SSL3_VERSION_MAJOR) */ 345 /* We must look at client_version inside the Client Hello message 346 * to get the correct minor version. 347 * However if we have only a pathologically small fragment of the 348 * Client Hello message, this would be difficult, and we'd have 349 * to read more records to find out. 350 * No known SSL 3.0 client fragments ClientHello like this, 351 * so we simply assume TLS 1.0 to avoid protocol version downgrade 352 * attacks. */ 353 if (p[3] == 0 && p[4] < 6) 354 { 355 #if 0 356 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_SMALL); 357 goto err; 358 #else 359 v[1] = TLS1_VERSION_MINOR; 360 #endif 361 } 362 /* if major version number > 3 set minor to a value 363 * which will use the highest version 3 we support. 364 * If TLS 2.0 ever appears we will need to revise 365 * this.... 366 */ 367 else if (p[9] > SSL3_VERSION_MAJOR) 368 v[1]=0xff; 369 else 370 v[1]=p[10]; /* minor version according to client_version */ 371 if (v[1] >= TLS1_VERSION_MINOR) 372 { 373 if (v[1] >= TLS1_2_VERSION_MINOR && 374 !(s->options & SSL_OP_NO_TLSv1_2)) 375 { 376 s->version=TLS1_2_VERSION; 377 type=3; 378 } 379 else if (v[1] >= TLS1_1_VERSION_MINOR && 380 !(s->options & SSL_OP_NO_TLSv1_1)) 381 { 382 s->version=TLS1_1_VERSION; 383 type=3; 384 } 385 else if (!(s->options & SSL_OP_NO_TLSv1)) 386 { 387 s->version=TLS1_VERSION; 388 type=3; 389 } 390 else if (!(s->options & SSL_OP_NO_SSLv3)) 391 { 392 s->version=SSL3_VERSION; 393 type=3; 394 } 395 } 396 else 397 { 398 /* client requests SSL 3.0 */ 399 if (!(s->options & SSL_OP_NO_SSLv3)) 400 { 401 s->version=SSL3_VERSION; 402 type=3; 403 } 404 else if (!(s->options & SSL_OP_NO_TLSv1)) 405 { 406 /* we won't be able to use TLS of course, 407 * but this will send an appropriate alert */ 408 s->version=TLS1_VERSION; 409 type=3; 410 } 411 } 412 } 413 else if ((strncmp("GET ", (char *)p,4) == 0) || 414 (strncmp("POST ",(char *)p,5) == 0) || 415 (strncmp("HEAD ",(char *)p,5) == 0) || 416 (strncmp("PUT ", (char *)p,4) == 0)) 417 { 418 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTP_REQUEST); 419 goto err; 420 } 421 else if (strncmp("CONNECT",(char *)p,7) == 0) 422 { 423 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTPS_PROXY_REQUEST); 424 goto err; 425 } 426 } 427 428 #ifdef OPENSSL_FIPS 429 if (FIPS_mode() && (s->version < TLS1_VERSION)) 430 { 431 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, 432 SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 433 goto err; 434 } 435 #endif 436 437 if (s->state == SSL23_ST_SR_CLNT_HELLO_B) 438 { 439 /* we have SSLv3/TLSv1 in an SSLv2 header 440 * (other cases skip this state) */ 441 442 type=2; 443 p=s->packet; 444 v[0] = p[3]; /* == SSL3_VERSION_MAJOR */ 445 v[1] = p[4]; 446 447 n=((p[0]&0x7f)<<8)|p[1]; 448 if (n > (1024*4)) 449 { 450 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE); 451 goto err; 452 } 453 454 j=ssl23_read_bytes(s,n+2); 455 if (j <= 0) return(j); 456 457 ssl3_finish_mac(s, s->packet+2, s->packet_length-2); 458 if (s->msg_callback) 459 s->msg_callback(0, SSL2_VERSION, 0, s->packet+2, s->packet_length-2, s, s->msg_callback_arg); /* CLIENT-HELLO */ 460 461 p=s->packet; 462 p+=5; 463 n2s(p,csl); 464 n2s(p,sil); 465 n2s(p,cl); 466 d=(unsigned char *)s->init_buf->data; 467 if ((csl+sil+cl+11) != s->packet_length) /* We can't have TLS extensions in SSL 2.0 format 468 * Client Hello, can we? Error condition should be 469 * '>' otherweise */ 470 { 471 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH); 472 goto err; 473 } 474 475 /* record header: msg_type ... */ 476 *(d++) = SSL3_MT_CLIENT_HELLO; 477 /* ... and length (actual value will be written later) */ 478 d_len = d; 479 d += 3; 480 481 /* client_version */ 482 *(d++) = SSL3_VERSION_MAJOR; /* == v[0] */ 483 *(d++) = v[1]; 484 485 /* lets populate the random area */ 486 /* get the challenge_length */ 487 i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl; 488 memset(d,0,SSL3_RANDOM_SIZE); 489 memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i); 490 d+=SSL3_RANDOM_SIZE; 491 492 /* no session-id reuse */ 493 *(d++)=0; 494 495 /* ciphers */ 496 j=0; 497 dd=d; 498 d+=2; 499 for (i=0; i<csl; i+=3) 500 { 501 if (p[i] != 0) continue; 502 *(d++)=p[i+1]; 503 *(d++)=p[i+2]; 504 j+=2; 505 } 506 s2n(j,dd); 507 508 /* COMPRESSION */ 509 *(d++)=1; 510 *(d++)=0; 511 512 #if 0 513 /* copy any remaining data with may be extensions */ 514 p = p+csl+sil+cl; 515 while (p < s->packet+s->packet_length) 516 { 517 *(d++)=*(p++); 518 } 519 #endif 520 521 i = (d-(unsigned char *)s->init_buf->data) - 4; 522 l2n3((long)i, d_len); 523 524 /* get the data reused from the init_buf */ 525 s->s3->tmp.reuse_message=1; 526 s->s3->tmp.message_type=SSL3_MT_CLIENT_HELLO; 527 s->s3->tmp.message_size=i; 528 } 529 530 /* imaginary new state (for program structure): */ 531 /* s->state = SSL23_SR_CLNT_HELLO_C */ 532 533 if (type == 1) 534 { 535 #ifdef OPENSSL_NO_SSL2 536 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); 537 goto err; 538 #else 539 /* we are talking sslv2 */ 540 /* we need to clean up the SSLv3/TLSv1 setup and put in the 541 * sslv2 stuff. */ 542 543 if (s->s2 == NULL) 544 { 545 if (!ssl2_new(s)) 546 goto err; 547 } 548 else 549 ssl2_clear(s); 550 551 if (s->s3 != NULL) ssl3_free(s); 552 553 if (!BUF_MEM_grow_clean(s->init_buf, 554 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) 555 { 556 goto err; 557 } 558 559 s->state=SSL2_ST_GET_CLIENT_HELLO_A; 560 if (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3) 561 s->s2->ssl2_rollback=0; 562 else 563 /* reject SSL 2.0 session if client supports SSL 3.0 or TLS 1.0 564 * (SSL 3.0 draft/RFC 2246, App. E.2) */ 565 s->s2->ssl2_rollback=1; 566 567 /* setup the n bytes we have read so we get them from 568 * the sslv2 buffer */ 569 s->rstate=SSL_ST_READ_HEADER; 570 s->packet_length=n; 571 s->packet= &(s->s2->rbuf[0]); 572 memcpy(s->packet,buf,n); 573 s->s2->rbuf_left=n; 574 s->s2->rbuf_offs=0; 575 576 s->method=SSLv2_server_method(); 577 s->handshake_func=s->method->ssl_accept; 578 #endif 579 } 580 581 if ((type == 2) || (type == 3)) 582 { 583 /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */ 584 585 if (!ssl_init_wbio_buffer(s,1)) goto err; 586 587 /* we are in this state */ 588 s->state=SSL3_ST_SR_CLNT_HELLO_A; 589 590 if (type == 3) 591 { 592 /* put the 'n' bytes we have read into the input buffer 593 * for SSLv3 */ 594 s->rstate=SSL_ST_READ_HEADER; 595 s->packet_length=n; 596 if (s->s3->rbuf.buf == NULL) 597 if (!ssl3_setup_read_buffer(s)) 598 goto err; 599 600 s->packet= &(s->s3->rbuf.buf[0]); 601 memcpy(s->packet,buf,n); 602 s->s3->rbuf.left=n; 603 s->s3->rbuf.offset=0; 604 } 605 else 606 { 607 s->packet_length=0; 608 s->s3->rbuf.left=0; 609 s->s3->rbuf.offset=0; 610 } 611 if (s->version == TLS1_2_VERSION) 612 s->method = TLSv1_2_server_method(); 613 else if (s->version == TLS1_1_VERSION) 614 s->method = TLSv1_1_server_method(); 615 else if (s->version == TLS1_VERSION) 616 s->method = TLSv1_server_method(); 617 else 618 s->method = SSLv3_server_method(); 619 #if 0 /* ssl3_get_client_hello does this */ 620 s->client_version=(v[0]<<8)|v[1]; 621 #endif 622 s->handshake_func=s->method->ssl_accept; 623 } 624 625 if ((type < 1) || (type > 3)) 626 { 627 /* bad, very bad */ 628 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNKNOWN_PROTOCOL); 629 goto err; 630 } 631 s->init_num=0; 632 633 if (buf != buf_space) OPENSSL_free(buf); 634 return(SSL_accept(s)); 635 err: 636 if (buf != buf_space) OPENSSL_free(buf); 637 return(-1); 638 } 639
