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 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 117#include <limits.h> 118#include <string.h> 119#include <stdio.h> 120#include "ssl_locl.h" 121#include <openssl/buffer.h> 122#include <openssl/rand.h> 123#include <openssl/objects.h> 124#include <openssl/evp.h> 125#include <openssl/x509.h> 126 127/* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */ 128int ssl3_do_write(SSL *s, int type) 129 { 130 int ret; 131 132 ret=ssl3_write_bytes(s,type,&s->init_buf->data[s->init_off], 133 s->init_num); 134 if (ret < 0) return(-1); 135 if (type == SSL3_RT_HANDSHAKE) 136 /* should not be done for 'Hello Request's, but in that case 137 * we'll ignore the result anyway */ 138 ssl3_finish_mac(s,(unsigned char *)&s->init_buf->data[s->init_off],ret); 139 140 if (ret == s->init_num) 141 { 142 if (s->msg_callback) 143 s->msg_callback(1, s->version, type, s->init_buf->data, (size_t)(s->init_off + s->init_num), s, s->msg_callback_arg); 144 return(1); 145 } 146 s->init_off+=ret; 147 s->init_num-=ret; 148 return(0); 149 } 150 151int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen) 152 { 153 unsigned char *p,*d; 154 int i; 155 unsigned long l; 156 157 if (s->state == a) 158 { 159 d=(unsigned char *)s->init_buf->data; 160 p= &(d[4]); 161 162 i=s->method->ssl3_enc->final_finish_mac(s, 163 &(s->s3->finish_dgst1), 164 &(s->s3->finish_dgst2), 165 sender,slen,s->s3->tmp.finish_md); 166 s->s3->tmp.finish_md_len = i; 167 memcpy(p, s->s3->tmp.finish_md, i); 168 p+=i; 169 l=i; 170 171 /* Copy the finished so we can use it for 172 renegotiation checks */ 173 if(s->type == SSL_ST_CONNECT) 174 { 175 OPENSSL_assert(i <= EVP_MAX_MD_SIZE); 176 memcpy(s->s3->previous_client_finished, 177 s->s3->tmp.finish_md, i); 178 s->s3->previous_client_finished_len=i; 179 } 180 else 181 { 182 OPENSSL_assert(i <= EVP_MAX_MD_SIZE); 183 memcpy(s->s3->previous_server_finished, 184 s->s3->tmp.finish_md, i); 185 s->s3->previous_server_finished_len=i; 186 } 187 188#ifdef OPENSSL_SYS_WIN16 189 /* MSVC 1.5 does not clear the top bytes of the word unless 190 * I do this. 191 */ 192 l&=0xffff; 193#endif 194 195 *(d++)=SSL3_MT_FINISHED; 196 l2n3(l,d); 197 s->init_num=(int)l+4; 198 s->init_off=0; 199 200 s->state=b; 201 } 202 203 /* SSL3_ST_SEND_xxxxxx_HELLO_B */ 204 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); 205 } 206 207int ssl3_get_finished(SSL *s, int a, int b) 208 { 209 int al,i,ok; 210 long n; 211 unsigned char *p; 212 213 /* the mac has already been generated when we received the 214 * change cipher spec message and is in s->s3->tmp.peer_finish_md 215 */ 216 217 n=s->method->ssl_get_message(s, 218 a, 219 b, 220 SSL3_MT_FINISHED, 221 64, /* should actually be 36+4 :-) */ 222 &ok); 223 224 if (!ok) return((int)n); 225 226 /* If this occurs, we have missed a message */ 227 if (!s->s3->change_cipher_spec) 228 { 229 al=SSL_AD_UNEXPECTED_MESSAGE; 230 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS); 231 goto f_err; 232 } 233 s->s3->change_cipher_spec=0; 234 235 p = (unsigned char *)s->init_msg; 236 i = s->s3->tmp.peer_finish_md_len; 237 238 if (i != n) 239 { 240 al=SSL_AD_DECODE_ERROR; 241 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH); 242 goto f_err; 243 } 244 245 if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) 246 { 247 al=SSL_AD_DECRYPT_ERROR; 248 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED); 249 goto f_err; 250 } 251 252 /* Copy the finished so we can use it for 253 renegotiation checks */ 254 if(s->type == SSL_ST_ACCEPT) 255 { 256 OPENSSL_assert(i <= EVP_MAX_MD_SIZE); 257 memcpy(s->s3->previous_client_finished, 258 s->s3->tmp.peer_finish_md, i); 259 s->s3->previous_client_finished_len=i; 260 } 261 else 262 { 263 OPENSSL_assert(i <= EVP_MAX_MD_SIZE); 264 memcpy(s->s3->previous_server_finished, 265 s->s3->tmp.peer_finish_md, i); 266 s->s3->previous_server_finished_len=i; 267 } 268 269 return(1); 270f_err: 271 ssl3_send_alert(s,SSL3_AL_FATAL,al); 272 return(0); 273 } 274 275/* for these 2 messages, we need to 276 * ssl->enc_read_ctx re-init 277 * ssl->s3->read_sequence zero 278 * ssl->s3->read_mac_secret re-init 279 * ssl->session->read_sym_enc assign 280 * ssl->session->read_compression assign 281 * ssl->session->read_hash assign 282 */ 283int ssl3_send_change_cipher_spec(SSL *s, int a, int b) 284 { 285 unsigned char *p; 286 287 if (s->state == a) 288 { 289 p=(unsigned char *)s->init_buf->data; 290 *p=SSL3_MT_CCS; 291 s->init_num=1; 292 s->init_off=0; 293 294 s->state=b; 295 } 296 297 /* SSL3_ST_CW_CHANGE_B */ 298 return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC)); 299 } 300 301static int ssl3_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x) 302 { 303 int n; 304 unsigned char *p; 305 306 n=i2d_X509(x,NULL); 307 if (!BUF_MEM_grow_clean(buf,(int)(n+(*l)+3))) 308 { 309 SSLerr(SSL_F_SSL3_ADD_CERT_TO_BUF,ERR_R_BUF_LIB); 310 return(-1); 311 } 312 p=(unsigned char *)&(buf->data[*l]); 313 l2n3(n,p); 314 i2d_X509(x,&p); 315 *l+=n+3; 316 317 return(0); 318 } 319 320unsigned long ssl3_output_cert_chain(SSL *s, X509 *x) 321 { 322 unsigned char *p; 323 int i; 324 unsigned long l=7; 325 BUF_MEM *buf; 326 int no_chain; 327 328 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || s->ctx->extra_certs) 329 no_chain = 1; 330 else 331 no_chain = 0; 332 333 /* TLSv1 sends a chain with nothing in it, instead of an alert */ 334 buf=s->init_buf; 335 if (!BUF_MEM_grow_clean(buf,10)) 336 { 337 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); 338 return(0); 339 } 340 if (x != NULL) 341 { 342 if (no_chain) 343 { 344 if (ssl3_add_cert_to_buf(buf, &l, x)) 345 return(0); 346 } 347 else 348 { 349 X509_STORE_CTX xs_ctx; 350 351 if (!X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,x,NULL)) 352 { 353 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_X509_LIB); 354 return(0); 355 } 356 X509_verify_cert(&xs_ctx); 357 /* Don't leave errors in the queue */ 358 ERR_clear_error(); 359 for (i=0; i < sk_X509_num(xs_ctx.chain); i++) 360 { 361 x = sk_X509_value(xs_ctx.chain, i); 362 363 if (ssl3_add_cert_to_buf(buf, &l, x)) 364 { 365 X509_STORE_CTX_cleanup(&xs_ctx); 366 return 0; 367 } 368 } 369 X509_STORE_CTX_cleanup(&xs_ctx); 370 } 371 } 372 /* Thawte special :-) */ 373 for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++) 374 { 375 x=sk_X509_value(s->ctx->extra_certs,i); 376 if (ssl3_add_cert_to_buf(buf, &l, x)) 377 return(0); 378 } 379 380 l-=7; 381 p=(unsigned char *)&(buf->data[4]); 382 l2n3(l,p); 383 l+=3; 384 p=(unsigned char *)&(buf->data[0]); 385 *(p++)=SSL3_MT_CERTIFICATE; 386 l2n3(l,p); 387 l+=4; 388 return(l); 389 } 390 391/* Obtain handshake message of message type 'mt' (any if mt == -1), 392 * maximum acceptable body length 'max'. 393 * The first four bytes (msg_type and length) are read in state 'st1', 394 * the body is read in state 'stn'. 395 */ 396long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) 397 { 398 unsigned char *p; 399 unsigned long l; 400 long n; 401 int i,al; 402 403 if (s->s3->tmp.reuse_message) 404 { 405 s->s3->tmp.reuse_message=0; 406 if ((mt >= 0) && (s->s3->tmp.message_type != mt)) 407 { 408 al=SSL_AD_UNEXPECTED_MESSAGE; 409 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE); 410 goto f_err; 411 } 412 *ok=1; 413 s->init_msg = s->init_buf->data + 4; 414 s->init_num = (int)s->s3->tmp.message_size; 415 return s->init_num; 416 } 417 418 p=(unsigned char *)s->init_buf->data; 419 420 if (s->state == st1) /* s->init_num < 4 */ 421 { 422 int skip_message; 423 424 do 425 { 426 while (s->init_num < 4) 427 { 428 i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE, 429 &p[s->init_num],4 - s->init_num, 0); 430 if (i <= 0) 431 { 432 s->rwstate=SSL_READING; 433 *ok = 0; 434 return i; 435 } 436 s->init_num+=i; 437 } 438 439 skip_message = 0; 440 if (!s->server) 441 if (p[0] == SSL3_MT_HELLO_REQUEST) 442 /* The server may always send 'Hello Request' messages -- 443 * we are doing a handshake anyway now, so ignore them 444 * if their format is correct. Does not count for 445 * 'Finished' MAC. */ 446 if (p[1] == 0 && p[2] == 0 &&p[3] == 0) 447 { 448 s->init_num = 0; 449 skip_message = 1; 450 451 if (s->msg_callback) 452 s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, 4, s, s->msg_callback_arg); 453 } 454 } 455 while (skip_message); 456 457 /* s->init_num == 4 */ 458 459 if ((mt >= 0) && (*p != mt)) 460 { 461 al=SSL_AD_UNEXPECTED_MESSAGE; 462 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE); 463 goto f_err; 464 } 465 if ((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) && 466 (st1 == SSL3_ST_SR_CERT_A) && 467 (stn == SSL3_ST_SR_CERT_B)) 468 { 469 /* At this point we have got an MS SGC second client 470 * hello (maybe we should always allow the client to 471 * start a new handshake?). We need to restart the mac. 472 * Don't increment {num,total}_renegotiations because 473 * we have not completed the handshake. */ 474 ssl3_init_finished_mac(s); 475 } 476 477 s->s3->tmp.message_type= *(p++); 478 479 n2l3(p,l); 480 if (l > (unsigned long)max) 481 { 482 al=SSL_AD_ILLEGAL_PARAMETER; 483 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); 484 goto f_err; 485 } 486 if (l > (INT_MAX-4)) /* BUF_MEM_grow takes an 'int' parameter */ 487 { 488 al=SSL_AD_ILLEGAL_PARAMETER; 489 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); 490 goto f_err; 491 } 492 if (l && !BUF_MEM_grow_clean(s->init_buf,(int)l+4)) 493 { 494 SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB); 495 goto err; 496 } 497 s->s3->tmp.message_size=l; 498 s->state=stn; 499 500 s->init_msg = s->init_buf->data + 4; 501 s->init_num = 0; 502 } 503 504 /* next state (stn) */ 505 p = s->init_msg; 506 n = s->s3->tmp.message_size - s->init_num; 507 while (n > 0) 508 { 509 i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0); 510 if (i <= 0) 511 { 512 s->rwstate=SSL_READING; 513 *ok = 0; 514 return i; 515 } 516 s->init_num += i; 517 n -= i; 518 } 519 ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4); 520 if (s->msg_callback) 521 s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg); 522 *ok=1; 523 return s->init_num; 524f_err: 525 ssl3_send_alert(s,SSL3_AL_FATAL,al); 526err: 527 *ok=0; 528 return(-1); 529 } 530 531int ssl_cert_type(X509 *x, EVP_PKEY *pkey) 532 { 533 EVP_PKEY *pk; 534 int ret= -1,i; 535 536 if (pkey == NULL) 537 pk=X509_get_pubkey(x); 538 else 539 pk=pkey; 540 if (pk == NULL) goto err; 541 542 i=pk->type; 543 if (i == EVP_PKEY_RSA) 544 { 545 ret=SSL_PKEY_RSA_ENC; 546 } 547 else if (i == EVP_PKEY_DSA) 548 { 549 ret=SSL_PKEY_DSA_SIGN; 550 } 551#ifndef OPENSSL_NO_EC 552 else if (i == EVP_PKEY_EC) 553 { 554 ret = SSL_PKEY_ECC; 555 } 556#endif 557 558err: 559 if(!pkey) EVP_PKEY_free(pk); 560 return(ret); 561 } 562 563int ssl_verify_alarm_type(long type) 564 { 565 int al; 566 567 switch(type) 568 { 569 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: 570 case X509_V_ERR_UNABLE_TO_GET_CRL: 571 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: 572 al=SSL_AD_UNKNOWN_CA; 573 break; 574 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: 575 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: 576 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: 577 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: 578 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: 579 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: 580 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: 581 case X509_V_ERR_CERT_NOT_YET_VALID: 582 case X509_V_ERR_CRL_NOT_YET_VALID: 583 case X509_V_ERR_CERT_UNTRUSTED: 584 case X509_V_ERR_CERT_REJECTED: 585 al=SSL_AD_BAD_CERTIFICATE; 586 break; 587 case X509_V_ERR_CERT_SIGNATURE_FAILURE: 588 case X509_V_ERR_CRL_SIGNATURE_FAILURE: 589 al=SSL_AD_DECRYPT_ERROR; 590 break; 591 case X509_V_ERR_CERT_HAS_EXPIRED: 592 case X509_V_ERR_CRL_HAS_EXPIRED: 593 al=SSL_AD_CERTIFICATE_EXPIRED; 594 break; 595 case X509_V_ERR_CERT_REVOKED: 596 al=SSL_AD_CERTIFICATE_REVOKED; 597 break; 598 case X509_V_ERR_OUT_OF_MEM: 599 al=SSL_AD_INTERNAL_ERROR; 600 break; 601 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: 602 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: 603 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: 604 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: 605 case X509_V_ERR_CERT_CHAIN_TOO_LONG: 606 case X509_V_ERR_PATH_LENGTH_EXCEEDED: 607 case X509_V_ERR_INVALID_CA: 608 al=SSL_AD_UNKNOWN_CA; 609 break; 610 case X509_V_ERR_APPLICATION_VERIFICATION: 611 al=SSL_AD_HANDSHAKE_FAILURE; 612 break; 613 case X509_V_ERR_INVALID_PURPOSE: 614 al=SSL_AD_UNSUPPORTED_CERTIFICATE; 615 break; 616 default: 617 al=SSL_AD_CERTIFICATE_UNKNOWN; 618 break; 619 } 620 return(al); 621 } 622 623int ssl3_setup_buffers(SSL *s) 624 { 625 unsigned char *p; 626 unsigned int extra,headerlen; 627 size_t len; 628 629 if (SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER) 630 headerlen = DTLS1_RT_HEADER_LENGTH; 631 else 632 headerlen = SSL3_RT_HEADER_LENGTH; 633 634 if (s->s3->rbuf.buf == NULL) 635 { 636 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER) 637 extra=SSL3_RT_MAX_EXTRA; 638 else 639 extra=0; 640 len = SSL3_RT_MAX_PACKET_SIZE + extra; 641 if ((p=OPENSSL_malloc(len)) == NULL) 642 goto err; 643 s->s3->rbuf.buf = p; 644 s->s3->rbuf.len = len; 645 } 646 647 if (s->s3->wbuf.buf == NULL) 648 { 649 len = SSL3_RT_MAX_PACKET_SIZE; 650 len += headerlen + 256; /* extra space for empty fragment */ 651 if ((p=OPENSSL_malloc(len)) == NULL) 652 goto err; 653 s->s3->wbuf.buf = p; 654 s->s3->wbuf.len = len; 655 } 656 s->packet= &(s->s3->rbuf.buf[0]); 657 return(1); 658err: 659 SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE); 660 return(0); 661 } 662