ssl/s3_both.c

   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) */
 128 int 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
 151 int 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 #ifdef OPENSSL_SYS_WIN16
 172                 /* MSVC 1.5 does not clear the top bytes of the word unless
 173                  * I do this.
 174                  */
 175                 l&=0xffff;
 176 #endif
 177
 178                 *(d++)=SSL3_MT_FINISHED;
 179                 l2n3(l,d);
 180                 s->init_num=(int)l+4;
 181                 s->init_off=0;
 182
 183                 s->state=b;
 184                 }
 185
 186         /* SSL3_ST_SEND_xxxxxx_HELLO_B */
 187         return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
 188         }
 189
 190 int ssl3_get_finished(SSL *s, int a, int b)
 191         {
 192         int al,i,ok;
 193         long n;
 194         unsigned char *p;
 195
 196         /* the mac has already been generated when we received the
 197          * change cipher spec message and is in s->s3->tmp.peer_finish_md
 198          */
 199
 200         n=ssl3_get_message(s,
 201                 a,
 202                 b,
 203                 SSL3_MT_FINISHED,
 204                 64, /* should actually be 36+4 :-) */
 205                 &ok);
 206
 207         if (!ok) return((int)n);
 208
 209         /* If this occurs, we have missed a message */
 210         if (!s->s3->change_cipher_spec)
 211                 {
 212                 al=SSL_AD_UNEXPECTED_MESSAGE;
 213                 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS);
 214                 goto f_err;
 215                 }
 216         s->s3->change_cipher_spec=0;
 217
 218         p = (unsigned char *)s->init_msg;
 219         i = s->s3->tmp.peer_finish_md_len;
 220
 221         if (i != n)
 222                 {
 223                 al=SSL_AD_DECODE_ERROR;
 224                 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH);
 225                 goto f_err;
 226                 }
 227
 228         if (memcmp(p, s->s3->tmp.peer_finish_md, i) != 0)
 229                 {
 230                 al=SSL_AD_DECRYPT_ERROR;
 231                 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED);
 232                 goto f_err;
 233                 }
 234
 235         return(1);
 236 f_err:
 237         ssl3_send_alert(s,SSL3_AL_FATAL,al);
 238         return(0);
 239         }
 240
 241 /* for these 2 messages, we need to
 242  * ssl->enc_read_ctx                    re-init
 243  * ssl->s3->read_sequence               zero
 244  * ssl->s3->read_mac_secret             re-init
 245  * ssl->session->read_sym_enc           assign
 246  * ssl->session->read_compression       assign
 247  * ssl->session->read_hash              assign
 248  */
 249 int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
 250         {
 251         unsigned char *p;
 252
 253         if (s->state == a)
 254                 {
 255                 p=(unsigned char *)s->init_buf->data;
 256                 *p=SSL3_MT_CCS;
 257                 s->init_num=1;
 258                 s->init_off=0;
 259
 260                 s->state=b;
 261                 }
 262
 263         /* SSL3_ST_CW_CHANGE_B */
 264         return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC));
 265         }
 266
 267 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x)
 268         {
 269         unsigned char *p;
 270         int n,i;
 271         unsigned long l=7;
 272         BUF_MEM *buf;
 273         X509_STORE_CTX xs_ctx;
 274         X509_OBJECT obj;
 275
 276         /* TLSv1 sends a chain with nothing in it, instead of an alert */
 277         buf=s->init_buf;
 278         if (!BUF_MEM_grow(buf,(int)(10)))
 279                 {
 280                 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
 281                 return(0);
 282                 }
 283         if (x != NULL)
 284                 {
 285                 if(!X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL))
 286                         {
 287                         SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_X509_LIB);
 288                         return(0);
 289                         }
 290
 291                 for (;;)
 292                         {
 293                         n=i2d_X509(x,NULL);
 294                         if (!BUF_MEM_grow(buf,(int)(n+l+3)))
 295                                 {
 296                                 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
 297                                 return(0);
 298                                 }
 299                         p=(unsigned char *)&(buf->data[l]);
 300                         l2n3(n,p);
 301                         i2d_X509(x,&p);
 302                         l+=n+3;
 303                         if (X509_NAME_cmp(X509_get_subject_name(x),
 304                                 X509_get_issuer_name(x)) == 0) break;
 305
 306                         i=X509_STORE_get_by_subject(&xs_ctx,X509_LU_X509,
 307                                 X509_get_issuer_name(x),&obj);
 308                         if (i <= 0) break;
 309                         x=obj.data.x509;
 310                         /* Count is one too high since the X509_STORE_get uped the
 311                          * ref count */
 312                         X509_free(x);
 313                         }
 314
 315                 X509_STORE_CTX_cleanup(&xs_ctx);
 316                 }
 317
 318         /* Thawte special :-) */
 319         if (s->ctx->extra_certs != NULL)
 320         for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++)
 321                 {
 322                 x=sk_X509_value(s->ctx->extra_certs,i);
 323                 n=i2d_X509(x,NULL);
 324                 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
 325                         {
 326                         SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
 327                         return(0);
 328                         }
 329                 p=(unsigned char *)&(buf->data[l]);
 330                 l2n3(n,p);
 331                 i2d_X509(x,&p);
 332                 l+=n+3;
 333                 }
 334
 335         l-=7;
 336         p=(unsigned char *)&(buf->data[4]);
 337         l2n3(l,p);
 338         l+=3;
 339         p=(unsigned char *)&(buf->data[0]);
 340         *(p++)=SSL3_MT_CERTIFICATE;
 341         l2n3(l,p);
 342         l+=4;
 343         return(l);
 344         }
 345
 346 /* Obtain handshake message of message type 'mt' (any if mt == -1),
 347  * maximum acceptable body length 'max'.
 348  * The first four bytes (msg_type and length) are read in state 'st1',
 349  * the body is read in state 'stn'.
 350  */
 351 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
 352         {
 353         unsigned char *p;
 354         unsigned long l;
 355         long n;
 356         int i,al;
 357
 358         if (s->s3->tmp.reuse_message)
 359                 {
 360                 s->s3->tmp.reuse_message=0;
 361                 if ((mt >= 0) && (s->s3->tmp.message_type != mt))
 362                         {
 363                         al=SSL_AD_UNEXPECTED_MESSAGE;
 364                         SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
 365                         goto f_err;
 366                         }
 367                 *ok=1;
 368                 s->init_msg = s->init_buf->data + 4;
 369                 s->init_num = (int)s->s3->tmp.message_size;
 370                 return s->init_num;
 371                 }
 372
 373         p=(unsigned char *)s->init_buf->data;
 374
 375         if (s->state == st1) /* s->init_num < 4 */
 376                 {
 377                 int skip_message;
 378
 379                 do
 380                         {
 381                         while (s->init_num < 4)
 382                                 {
 383                                 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],
 384                                         4 - s->init_num, 0);
 385                                 if (i <= 0)
 386                                         {
 387                                         s->rwstate=SSL_READING;
 388                                         *ok = 0;
 389                                         return i;
 390                                         }
 391                                 s->init_num+=i;
 392                                 }
 393
 394                         skip_message = 0;
 395                         if (!s->server)
 396                                 if (p[0] == SSL3_MT_HELLO_REQUEST)
 397                                         /* The server may always send 'Hello Request' messages --
 398                                          * we are doing a handshake anyway now, so ignore them
 399                                          * if their format is correct. Does not count for
 400                                          * 'Finished' MAC. */
 401                                         if (p[1] == 0 && p[2] == 0 &&p[3] == 0)
 402                                                 {
 403                                                 s->init_num = 0;
 404                                                 skip_message = 1;
 405
 406                                                 if (s->msg_callback)
 407                                                         s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, 4, s, s->msg_callback_arg);
 408                                                 }
 409                         }
 410                 while (skip_message);
 411
 412                 /* s->init_num == 4 */
 413
 414                 if ((mt >= 0) && (*p != mt))
 415                         {
 416                         al=SSL_AD_UNEXPECTED_MESSAGE;
 417                         SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
 418                         goto f_err;
 419                         }
 420                 if ((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) &&
 421                                         (st1 == SSL3_ST_SR_CERT_A) &&
 422                                         (stn == SSL3_ST_SR_CERT_B))
 423                         {
 424                         /* At this point we have got an MS SGC second client
 425                          * hello (maybe we should always allow the client to
 426                          * start a new handshake?). We need to restart the mac.
 427                          * Don't increment {num,total}_renegotiations because
 428                          * we have not completed the handshake. */
 429                         ssl3_init_finished_mac(s);
 430                         }
 431
 432                 s->s3->tmp.message_type= *(p++);
 433
 434                 n2l3(p,l);
 435                 if (l > (unsigned long)max)
 436                         {
 437                         al=SSL_AD_ILLEGAL_PARAMETER;
 438                         SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE);
 439                         goto f_err;
 440                         }
 441                 if (l > (INT_MAX-4)) /* BUF_MEM_grow takes an 'int' parameter */
 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 && !BUF_MEM_grow(s->init_buf,(int)l+4))
 448                         {
 449                         SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB);
 450                         goto err;
 451                         }
 452                 s->s3->tmp.message_size=l;
 453                 s->state=stn;
 454
 455                 s->init_msg = s->init_buf->data + 4;
 456                 s->init_num = 0;
 457                 }
 458
 459         /* next state (stn) */
 460         p = s->init_msg;
 461         n = s->s3->tmp.message_size - s->init_num;
 462         while (n > 0)
 463                 {
 464                 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0);
 465                 if (i <= 0)
 466                         {
 467                         s->rwstate=SSL_READING;
 468                         *ok = 0;
 469                         return i;
 470                         }
 471                 s->init_num += i;
 472                 n -= i;
 473                 }
 474         ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4);
 475         if (s->msg_callback)
 476                 s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg);
 477         *ok=1;
 478         return s->init_num;
 479 f_err:
 480         ssl3_send_alert(s,SSL3_AL_FATAL,al);
 481 err:
 482         *ok=0;
 483         return(-1);
 484         }
 485
 486 int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
 487         {
 488         EVP_PKEY *pk;
 489         int ret= -1,i,j;
 490
 491         if (pkey == NULL)
 492                 pk=X509_get_pubkey(x);
 493         else
 494                 pk=pkey;
 495         if (pk == NULL) goto err;
 496
 497         i=pk->type;
 498         if (i == EVP_PKEY_RSA)
 499                 {
 500                 ret=SSL_PKEY_RSA_ENC;
 501                 if (x != NULL)
 502                         {
 503                         j=X509_get_ext_count(x);
 504                         /* check to see if this is a signing only certificate */
 505                         /* EAY EAY EAY EAY */
 506                         }
 507                 }
 508         else if (i == EVP_PKEY_DSA)
 509                 {
 510                 ret=SSL_PKEY_DSA_SIGN;
 511                 }
 512         else if (i == EVP_PKEY_DH)
 513                 {
 514                 /* if we just have a key, we needs to be guess */
 515
 516                 if (x == NULL)
 517                         ret=SSL_PKEY_DH_DSA;
 518                 else
 519                         {
 520                         j=X509_get_signature_type(x);
 521                         if (j == EVP_PKEY_RSA)
 522                                 ret=SSL_PKEY_DH_RSA;
 523                         else if (j== EVP_PKEY_DSA)
 524                                 ret=SSL_PKEY_DH_DSA;
 525                         else ret= -1;
 526                         }
 527                 }
 528 #ifndef OPENSSL_NO_EC
 529         /* XXX: Structurally, there is no distinction between
 530          * ECDSA and ECDH public keys (both are ECPoints).
 531          * So EVP_PKEY_ECDSA should really be renamed EVP_PKEY_ECC
 532          * (or similar). As for ECC certificates, additional
 533          * information (e.g. in the optional key usage X509v3
 534          * extension) could be used when available to distinguish
 535          * between ECDH and ECDSA certificates. For now, we do not
 536          * make that distinction here. Instead, we shift the burden
 537          * of checking for appropriate key usage to the SSL code
 538          * responsible for sending/processing ECC certificates.
 539          */
 540         else if (i == EVP_PKEY_ECDSA)
 541                 {
 542                 ret = SSL_PKEY_ECC;
 543                 }
 544 #endif
 545         else
 546                 ret= -1;
 547
 548 err:
 549         if(!pkey) EVP_PKEY_free(pk);
 550         return(ret);
 551         }
 552
 553 int ssl_verify_alarm_type(long type)
 554         {
 555         int al;
 556
 557         switch(type)
 558                 {
 559         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
 560         case X509_V_ERR_UNABLE_TO_GET_CRL:
 561         case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
 562                 al=SSL_AD_UNKNOWN_CA;
 563                 break;
 564         case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
 565         case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
 566         case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
 567         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
 568         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
 569         case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
 570         case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
 571         case X509_V_ERR_CERT_NOT_YET_VALID:
 572         case X509_V_ERR_CRL_NOT_YET_VALID:
 573         case X509_V_ERR_CERT_UNTRUSTED:
 574         case X509_V_ERR_CERT_REJECTED:
 575                 al=SSL_AD_BAD_CERTIFICATE;
 576                 break;
 577         case X509_V_ERR_CERT_SIGNATURE_FAILURE:
 578         case X509_V_ERR_CRL_SIGNATURE_FAILURE:
 579                 al=SSL_AD_DECRYPT_ERROR;
 580                 break;
 581         case X509_V_ERR_CERT_HAS_EXPIRED:
 582         case X509_V_ERR_CRL_HAS_EXPIRED:
 583                 al=SSL_AD_CERTIFICATE_EXPIRED;
 584                 break;
 585         case X509_V_ERR_CERT_REVOKED:
 586                 al=SSL_AD_CERTIFICATE_REVOKED;
 587                 break;
 588         case X509_V_ERR_OUT_OF_MEM:
 589                 al=SSL_AD_INTERNAL_ERROR;
 590                 break;
 591         case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
 592         case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
 593         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
 594         case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
 595         case X509_V_ERR_CERT_CHAIN_TOO_LONG:
 596         case X509_V_ERR_PATH_LENGTH_EXCEEDED:
 597         case X509_V_ERR_INVALID_CA:
 598                 al=SSL_AD_UNKNOWN_CA;
 599                 break;
 600         case X509_V_ERR_APPLICATION_VERIFICATION:
 601                 al=SSL_AD_HANDSHAKE_FAILURE;
 602                 break;
 603         case X509_V_ERR_INVALID_PURPOSE:
 604                 al=SSL_AD_UNSUPPORTED_CERTIFICATE;
 605                 break;
 606         default:
 607                 al=SSL_AD_CERTIFICATE_UNKNOWN;
 608                 break;
 609                 }
 610         return(al);
 611         }
 612
 613 int ssl3_setup_buffers(SSL *s)
 614         {
 615         unsigned char *p;
 616         unsigned int extra;
 617         size_t len;
 618
 619         if (s->s3->rbuf.buf == NULL)
 620                 {
 621                 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
 622                         extra=SSL3_RT_MAX_EXTRA;
 623                 else
 624                         extra=0;
 625                 len = SSL3_RT_MAX_PACKET_SIZE + extra;
 626                 if ((p=OPENSSL_malloc(len)) == NULL)
 627                         goto err;
 628                 s->s3->rbuf.buf = p;
 629                 s->s3->rbuf.len = len;
 630                 }
 631
 632         if (s->s3->wbuf.buf == NULL)
 633                 {
 634                 len = SSL3_RT_MAX_PACKET_SIZE;
 635                 len += SSL3_RT_HEADER_LENGTH + 256; /* extra space for empty fragment */
 636                 if ((p=OPENSSL_malloc(len)) == NULL)
 637                         goto err;
 638                 s->s3->wbuf.buf = p;
 639                 s->s3->wbuf.len = len;
 640                 }
 641         s->packet= &(s->s3->rbuf.buf[0]);
 642         return(1);
 643 err:
 644         SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE);
 645         return(0);
 646         }