1/* ssl/s3_both.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) 1998-2002 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 <limits.h> 113#include <string.h> 114#include <stdio.h> 115#include "ssl_locl.h" 116#include <openssl/buffer.h> 117#include <openssl/rand.h> 118#include <openssl/objects.h> 119#include <openssl/evp.h> 120#include <openssl/x509.h> 121 122/* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */ 123int ssl3_do_write(SSL *s, int type) 124 { 125 int ret; 126 127 ret=ssl3_write_bytes(s,type,&s->init_buf->data[s->init_off], 128 s->init_num); 129 if (ret < 0) return(-1); 130 if (type == SSL3_RT_HANDSHAKE) 131 /* should not be done for 'Hello Request's, but in that case 132 * we'll ignore the result anyway */ 133 ssl3_finish_mac(s,(unsigned char *)&s->init_buf->data[s->init_off],ret); 134 135 if (ret == s->init_num) 136 { 137 if (s->msg_callback) 138 s->msg_callback(1, s->version, type, s->init_buf->data, (size_t)(s->init_off + s->init_num), s, s->msg_callback_arg); 139 return(1); 140 } 141 s->init_off+=ret; 142 s->init_num-=ret; 143 return(0); 144 } 145 146int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen) 147 { 148 unsigned char *p,*d; 149 int i; 150 unsigned long l; 151 152 if (s->state == a) 153 { 154 d=(unsigned char *)s->init_buf->data; 155 p= &(d[4]); 156 157 i=s->method->ssl3_enc->final_finish_mac(s, 158 &(s->s3->finish_dgst1), 159 &(s->s3->finish_dgst2), 160 sender,slen,s->s3->tmp.finish_md); 161 s->s3->tmp.finish_md_len = i; 162 memcpy(p, s->s3->tmp.finish_md, i); 163 p+=i; 164 l=i; 165 166#ifdef OPENSSL_SYS_WIN16 167 /* MSVC 1.5 does not clear the top bytes of the word unless 168 * I do this. 169 */ 170 l&=0xffff; 171#endif 172 173 *(d++)=SSL3_MT_FINISHED; 174 l2n3(l,d); 175 s->init_num=(int)l+4; 176 s->init_off=0; 177 178 s->state=b; 179 } 180 181 /* SSL3_ST_SEND_xxxxxx_HELLO_B */ 182 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); 183 } 184 185int ssl3_get_finished(SSL *s, int a, int b) 186 { 187 int al,i,ok; 188 long n; 189 unsigned char *p; 190 191 /* the mac has already been generated when we received the 192 * change cipher spec message and is in s->s3->tmp.peer_finish_md 193 */ 194 195 n=ssl3_get_message(s, 196 a, 197 b, 198 SSL3_MT_FINISHED, 199 64, /* should actually be 36+4 :-) */ 200 &ok); 201 202 if (!ok) return((int)n); 203 204 /* If this occurs, we have missed a message */ 205 if (!s->s3->change_cipher_spec) 206 { 207 al=SSL_AD_UNEXPECTED_MESSAGE; 208 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS); 209 goto f_err; 210 } 211 s->s3->change_cipher_spec=0; 212 213 p = (unsigned char *)s->init_msg; 214 i = s->s3->tmp.peer_finish_md_len; 215 216 if (i != n) 217 { 218 al=SSL_AD_DECODE_ERROR; 219 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH); 220 goto f_err; 221 } 222 223 if (memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) 224 { 225 al=SSL_AD_DECRYPT_ERROR; 226 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED); 227 goto f_err; 228 } 229 230 return(1); 231f_err: 232 ssl3_send_alert(s,SSL3_AL_FATAL,al); 233 return(0); 234 } 235 236/* for these 2 messages, we need to 237 * ssl->enc_read_ctx re-init 238 * ssl->s3->read_sequence zero 239 * ssl->s3->read_mac_secret re-init 240 * ssl->session->read_sym_enc assign 241 * ssl->session->read_compression assign 242 * ssl->session->read_hash assign 243 */ 244int ssl3_send_change_cipher_spec(SSL *s, int a, int b) 245 { 246 unsigned char *p; 247 248 if (s->state == a) 249 { 250 p=(unsigned char *)s->init_buf->data; 251 *p=SSL3_MT_CCS; 252 s->init_num=1; 253 s->init_off=0; 254 255 s->state=b; 256 } 257 258 /* SSL3_ST_CW_CHANGE_B */ 259 return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC)); 260 } 261 262unsigned long ssl3_output_cert_chain(SSL *s, X509 *x) 263 { 264 unsigned char *p; 265 int n,i; 266 unsigned long l=7; 267 BUF_MEM *buf; 268 X509_STORE_CTX xs_ctx; 269 X509_OBJECT obj; 270 271 int no_chain; 272 273 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || s->ctx->extra_certs) 274 no_chain = 1; 275 else 276 no_chain = 0; 277 278 /* TLSv1 sends a chain with nothing in it, instead of an alert */ 279 buf=s->init_buf; 280 if (!BUF_MEM_grow_clean(buf,10)) 281 { 282 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); 283 return(0); 284 } 285 if (x != NULL) 286 { 287 if(!no_chain && !X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL)) 288 { 289 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_X509_LIB); 290 return(0); 291 } 292 293 for (;;) 294 { 295 n=i2d_X509(x,NULL); 296 if (!BUF_MEM_grow_clean(buf,(int)(n+l+3))) 297 { 298 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); 299 return(0); 300 } 301 p=(unsigned char *)&(buf->data[l]); 302 l2n3(n,p); 303 i2d_X509(x,&p); 304 l+=n+3; 305 306 if (no_chain) 307 break; 308 309 if (X509_NAME_cmp(X509_get_subject_name(x), 310 X509_get_issuer_name(x)) == 0) break; 311 312 i=X509_STORE_get_by_subject(&xs_ctx,X509_LU_X509, 313 X509_get_issuer_name(x),&obj); 314 if (i <= 0) break; 315 x=obj.data.x509; 316 /* Count is one too high since the X509_STORE_get uped the 317 * ref count */ 318 X509_free(x); 319 } 320 if (!no_chain) 321 X509_STORE_CTX_cleanup(&xs_ctx); 322 } 323 324 /* Thawte special :-) */ 325 if (s->ctx->extra_certs != NULL) 326 for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++) 327 { 328 x=sk_X509_value(s->ctx->extra_certs,i); 329 n=i2d_X509(x,NULL); 330 if (!BUF_MEM_grow_clean(buf,(int)(n+l+3))) 331 { 332 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); 333 return(0); 334 } 335 p=(unsigned char *)&(buf->data[l]); 336 l2n3(n,p); 337 i2d_X509(x,&p); 338 l+=n+3; 339 } 340 341 l-=7; 342 p=(unsigned char *)&(buf->data[4]); 343 l2n3(l,p); 344 l+=3; 345 p=(unsigned char *)&(buf->data[0]); 346 *(p++)=SSL3_MT_CERTIFICATE; 347 l2n3(l,p); 348 l+=4; 349 return(l); 350 } 351 352/* Obtain handshake message of message type 'mt' (any if mt == -1), 353 * maximum acceptable body length 'max'. 354 * The first four bytes (msg_type and length) are read in state 'st1', 355 * the body is read in state 'stn'. 356 */ 357long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) 358 { 359 unsigned char *p; 360 unsigned long l; 361 long n; 362 int i,al; 363 364 if (s->s3->tmp.reuse_message) 365 { 366 s->s3->tmp.reuse_message=0; 367 if ((mt >= 0) && (s->s3->tmp.message_type != mt)) 368 { 369 al=SSL_AD_UNEXPECTED_MESSAGE; 370 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE); 371 goto f_err; 372 } 373 *ok=1; 374 s->init_msg = s->init_buf->data + 4; 375 s->init_num = (int)s->s3->tmp.message_size; 376 return s->init_num; 377 } 378 379 p=(unsigned char *)s->init_buf->data; 380 381 if (s->state == st1) /* s->init_num < 4 */ 382 { 383 int skip_message; 384 385 do 386 { 387 while (s->init_num < 4) 388 { 389 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num], 390 4 - s->init_num, 0); 391 if (i <= 0) 392 { 393 s->rwstate=SSL_READING; 394 *ok = 0; 395 return i; 396 } 397 s->init_num+=i; 398 } 399 400 skip_message = 0; 401 if (!s->server) 402 if (p[0] == SSL3_MT_HELLO_REQUEST) 403 /* The server may always send 'Hello Request' messages -- 404 * we are doing a handshake anyway now, so ignore them 405 * if their format is correct. Does not count for 406 * 'Finished' MAC. */ 407 if (p[1] == 0 && p[2] == 0 &&p[3] == 0) 408 { 409 s->init_num = 0; 410 skip_message = 1; 411 412 if (s->msg_callback) 413 s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, 4, s, s->msg_callback_arg); 414 } 415 } 416 while (skip_message); 417 418 /* s->init_num == 4 */ 419 420 if ((mt >= 0) && (*p != mt)) 421 { 422 al=SSL_AD_UNEXPECTED_MESSAGE; 423 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE); 424 goto f_err; 425 } 426 if ((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) && 427 (st1 == SSL3_ST_SR_CERT_A) && 428 (stn == SSL3_ST_SR_CERT_B)) 429 { 430 /* At this point we have got an MS SGC second client 431 * hello (maybe we should always allow the client to 432 * start a new handshake?). We need to restart the mac. 433 * Don't increment {num,total}_renegotiations because 434 * we have not completed the handshake. */ 435 ssl3_init_finished_mac(s); 436 } 437 438 s->s3->tmp.message_type= *(p++); 439 440 n2l3(p,l); 441 if (l > (unsigned long)max) 442 { 443 al=SSL_AD_ILLEGAL_PARAMETER; 444 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); 445 goto f_err; 446 } 447 if (l > (INT_MAX-4)) /* BUF_MEM_grow takes an 'int' parameter */ 448 { 449 al=SSL_AD_ILLEGAL_PARAMETER; 450 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); 451 goto f_err; 452 } 453 if (l && !BUF_MEM_grow_clean(s->init_buf,(int)l+4)) 454 { 455 SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB); 456 goto err; 457 } 458 s->s3->tmp.message_size=l; 459 s->state=stn; 460 461 s->init_msg = s->init_buf->data + 4; 462 s->init_num = 0; 463 } 464 465 /* next state (stn) */ 466 p = s->init_msg; 467 n = s->s3->tmp.message_size - s->init_num; 468 while (n > 0) 469 { 470 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0); 471 if (i <= 0) 472 { 473 s->rwstate=SSL_READING; 474 *ok = 0; 475 return i; 476 } 477 s->init_num += i; 478 n -= i; 479 } 480 ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4); 481 if (s->msg_callback) 482 s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg); 483 *ok=1; 484 return s->init_num; 485f_err: 486 ssl3_send_alert(s,SSL3_AL_FATAL,al); 487err: 488 *ok=0; 489 return(-1); 490 } 491 492int ssl_cert_type(X509 *x, EVP_PKEY *pkey) 493 { 494 EVP_PKEY *pk; 495 int ret= -1,i,j; 496 497 if (pkey == NULL) 498 pk=X509_get_pubkey(x); 499 else 500 pk=pkey; 501 if (pk == NULL) goto err; 502 503 i=pk->type; 504 if (i == EVP_PKEY_RSA) 505 { 506 ret=SSL_PKEY_RSA_ENC; 507 if (x != NULL) 508 { 509 j=X509_get_ext_count(x); 510 /* check to see if this is a signing only certificate */ 511 /* EAY EAY EAY EAY */ 512 } 513 } 514 else if (i == EVP_PKEY_DSA) 515 { 516 ret=SSL_PKEY_DSA_SIGN; 517 } 518 else if (i == EVP_PKEY_DH) 519 { 520 /* if we just have a key, we needs to be guess */ 521 522 if (x == NULL) 523 ret=SSL_PKEY_DH_DSA; 524 else 525 { 526 j=X509_get_signature_type(x); 527 if (j == EVP_PKEY_RSA) 528 ret=SSL_PKEY_DH_RSA; 529 else if (j== EVP_PKEY_DSA) 530 ret=SSL_PKEY_DH_DSA; 531 else ret= -1; 532 } 533 } 534 else 535 ret= -1; 536 537err: 538 if(!pkey) EVP_PKEY_free(pk); 539 return(ret); 540 } 541 542int ssl_verify_alarm_type(long type) 543 { 544 int al; 545 546 switch(type) 547 { 548 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: 549 case X509_V_ERR_UNABLE_TO_GET_CRL: 550 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: 551 al=SSL_AD_UNKNOWN_CA; 552 break; 553 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: 554 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: 555 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: 556 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: 557 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: 558 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: 559 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: 560 case X509_V_ERR_CERT_NOT_YET_VALID: 561 case X509_V_ERR_CRL_NOT_YET_VALID: 562 case X509_V_ERR_CERT_UNTRUSTED: 563 case X509_V_ERR_CERT_REJECTED: 564 al=SSL_AD_BAD_CERTIFICATE; 565 break; 566 case X509_V_ERR_CERT_SIGNATURE_FAILURE: 567 case X509_V_ERR_CRL_SIGNATURE_FAILURE: 568 al=SSL_AD_DECRYPT_ERROR; 569 break; 570 case X509_V_ERR_CERT_HAS_EXPIRED: 571 case X509_V_ERR_CRL_HAS_EXPIRED: 572 al=SSL_AD_CERTIFICATE_EXPIRED; 573 break; 574 case X509_V_ERR_CERT_REVOKED: 575 al=SSL_AD_CERTIFICATE_REVOKED; 576 break; 577 case X509_V_ERR_OUT_OF_MEM: 578 al=SSL_AD_INTERNAL_ERROR; 579 break; 580 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: 581 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: 582 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: 583 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: 584 case X509_V_ERR_CERT_CHAIN_TOO_LONG: 585 case X509_V_ERR_PATH_LENGTH_EXCEEDED: 586 case X509_V_ERR_INVALID_CA: 587 al=SSL_AD_UNKNOWN_CA; 588 break; 589 case X509_V_ERR_APPLICATION_VERIFICATION: 590 al=SSL_AD_HANDSHAKE_FAILURE; 591 break; 592 case X509_V_ERR_INVALID_PURPOSE: 593 al=SSL_AD_UNSUPPORTED_CERTIFICATE; 594 break; 595 default: 596 al=SSL_AD_CERTIFICATE_UNKNOWN; 597 break; 598 } 599 return(al); 600 } 601 602int ssl3_setup_buffers(SSL *s) 603 { 604 unsigned char *p; 605 unsigned int extra; 606 size_t len; 607 608 if (s->s3->rbuf.buf == NULL) 609 { 610 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER) 611 extra=SSL3_RT_MAX_EXTRA; 612 else 613 extra=0; 614 len = SSL3_RT_MAX_PACKET_SIZE + extra; 615 if ((p=OPENSSL_malloc(len)) == NULL) 616 goto err; 617 s->s3->rbuf.buf = p; 618 s->s3->rbuf.len = len; 619 } 620 621 if (s->s3->wbuf.buf == NULL) 622 { 623 len = SSL3_RT_MAX_PACKET_SIZE; 624 len += SSL3_RT_HEADER_LENGTH + 256; /* extra space for empty fragment */ 625 if ((p=OPENSSL_malloc(len)) == NULL) 626 goto err; 627 s->s3->wbuf.buf = p; 628 s->s3->wbuf.len = len; 629 } 630 s->packet= &(s->s3->rbuf.buf[0]); 631 return(1); 632err: 633 SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE); 634 return(0); 635 } 636