ssl/s2_pkt.c

   1 /* ssl/s2_pkt.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 #include <stdio.h>
  60 #include <errno.h>
  61 #define USE_SOCKETS
  62 #include "ssl_locl.h"
  63
  64 /* SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_PEER_ERROR_NO_CIPHER);
  65  * SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_PEER_ERROR_NO_CERTIFICATE);
  66  * SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_PEER_ERROR_CERTIFICATE);
  67  * SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE);
  68  * SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_UNKNOWN_REMOTE_ERROR_TYPE);
  69  */
  70
  71 #ifndef NOPROTO
  72 static int read_n(SSL *s,unsigned int n,unsigned int max,unsigned int extend);
  73 static int do_ssl_write(SSL *s, const char *buf, unsigned int len);
  74 static int write_pending(SSL *s, const char *buf, unsigned int len);
  75 static int ssl_mt_error(int n);
  76 #else
  77 static int read_n();
  78 static int do_ssl_write();
  79 static int write_pending();
  80 static int ssl_mt_error();
  81 #endif
  82
  83 int ssl2_peek(s,buf,len)
  84 SSL *s;
  85 char *buf;
  86 int len;
  87         {
  88         int ret;
  89
  90         ret=ssl2_read(s,buf,len);
  91         if (ret > 0)
  92                 {
  93                 s->s2->ract_data_length+=ret;
  94                 s->s2->ract_data-=ret;
  95                 }
  96         return(ret);
  97         }
  98
  99 /* SSL_read -
 100  * This routine will return 0 to len bytes, decrypted etc if required.
 101  */
 102 int ssl2_read(s, buf, len)
 103 SSL *s;
 104 char *buf;
 105 int len;
 106         {
 107         int n;
 108         unsigned char mac[MAX_MAC_SIZE];
 109         unsigned char *p;
 110         int i;
 111         unsigned int mac_size=0;
 112
 113         if (SSL_in_init(s) && !s->in_handshake)
 114                 {
 115                 n=s->handshake_func(s);
 116                 if (n < 0) return(n);
 117                 if (n == 0)
 118                         {
 119                         SSLerr(SSL_F_SSL2_READ,SSL_R_SSL_HANDSHAKE_FAILURE);
 120                         return(-1);
 121                         }
 122                 }
 123
 124         clear_sys_error();
 125         s->rwstate=SSL_NOTHING;
 126         if (len <= 0) return(len);
 127
 128         if (s->s2->ract_data_length != 0) /* read from buffer */
 129                 {
 130                 if (len > s->s2->ract_data_length)
 131                         n=s->s2->ract_data_length;
 132                 else
 133                         n=len;
 134
 135                 memcpy(buf,s->s2->ract_data,(unsigned int)n);
 136                 s->s2->ract_data_length-=n;
 137                 s->s2->ract_data+=n;
 138                 if (s->s2->ract_data_length == 0)
 139                         s->rstate=SSL_ST_READ_HEADER;
 140                 return(n);
 141                 }
 142
 143         if (s->rstate == SSL_ST_READ_HEADER)
 144                 {
 145                 if (s->first_packet)
 146                         {
 147                         n=read_n(s,5,SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2,0);
 148                         if (n <= 0) return(n); /* error or non-blocking */
 149                         s->first_packet=0;
 150                         p=s->packet;
 151                         if (!((p[0] & 0x80) && (
 152                                 (p[2] == SSL2_MT_CLIENT_HELLO) ||
 153                                 (p[2] == SSL2_MT_SERVER_HELLO))))
 154                                 {
 155                                 SSLerr(SSL_F_SSL2_READ,SSL_R_NON_SSLV2_INITIAL_PACKET);
 156                                 return(-1);
 157                                 }
 158                         }
 159                 else
 160                         {
 161                         n=read_n(s,2,SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2,0);
 162                         if (n <= 0) return(n); /* error or non-blocking */
 163                         }
 164                 /* part read stuff */
 165
 166                 s->rstate=SSL_ST_READ_BODY;
 167                 p=s->packet;
 168                 /* Do header */
 169                 /*s->s2->padding=0;*/
 170                 s->s2->escape=0;
 171                 s->s2->rlength=(((unsigned int)p[0])<<8)|((unsigned int)p[1]);
 172                 if ((p[0] & TWO_BYTE_BIT))              /* Two byte header? */
 173                         {
 174                         s->s2->three_byte_header=0;
 175                         s->s2->rlength&=TWO_BYTE_MASK;
 176                         }
 177                 else
 178                         {
 179                         s->s2->three_byte_header=1;
 180                         s->s2->rlength&=THREE_BYTE_MASK;
 181
 182                         /* security >s2->escape */
 183                         s->s2->escape=((p[0] & SEC_ESC_BIT))?1:0;
 184                         }
 185                 }
 186
 187         if (s->rstate == SSL_ST_READ_BODY)
 188                 {
 189                 n=s->s2->rlength+2+s->s2->three_byte_header;
 190                 if (n > (int)s->packet_length)
 191                         {
 192                         n-=s->packet_length;
 193                         i=read_n(s,(unsigned int)n,(unsigned int)n,1);
 194                         if (i <= 0) return(i); /* ERROR */
 195                         }
 196
 197                 p= &(s->packet[2]);
 198                 s->rstate=SSL_ST_READ_HEADER;
 199                 if (s->s2->three_byte_header)
 200                         s->s2->padding= *(p++);
 201                 else    s->s2->padding=0;
 202
 203                 /* Data portion */
 204                 if (s->s2->clear_text)
 205                         {
 206                         s->s2->mac_data=p;
 207                         s->s2->ract_data=p;
 208                         s->s2->pad_data=NULL;
 209                         }
 210                 else
 211                         {
 212                         mac_size=EVP_MD_size(s->read_hash);
 213                         s->s2->mac_data=p;
 214                         s->s2->ract_data= &p[mac_size];
 215                         s->s2->pad_data= &p[mac_size+
 216                                 s->s2->rlength-s->s2->padding];
 217                         }
 218
 219                 s->s2->ract_data_length=s->s2->rlength;
 220                 /* added a check for length > max_size in case
 221                  * encryption was not turned on yet due to an error */
 222                 if ((!s->s2->clear_text) &&
 223                         (s->s2->rlength >= mac_size))
 224                         {
 225                         ssl2_enc(s,0);
 226                         s->s2->ract_data_length-=mac_size;
 227                         ssl2_mac(s,mac,0);
 228                         s->s2->ract_data_length-=s->s2->padding;
 229                         if (    (memcmp(mac,s->s2->mac_data,
 230                                 (unsigned int)mac_size) != 0) ||
 231                                 (s->s2->rlength%EVP_CIPHER_CTX_block_size(s->enc_read_ctx) != 0))
 232                                 {
 233                                 SSLerr(SSL_F_SSL2_READ,SSL_R_BAD_MAC_DECODE);
 234                                 return(-1);
 235                                 }
 236                         }
 237                 INC32(s->s2->read_sequence); /* expect next number */
 238                 /* s->s2->ract_data is now available for processing */
 239
 240                 /* If a 0 byte packet was sent, return 0, otherwise
 241                  * we play havoc with people using select with
 242                  * blocking sockets.  Let them handle a packet at a time,
 243                  * they should really be using non-blocking sockets. */
 244                 if (s->s2->ract_data_length == 0)
 245                         return(0);
 246                 return(ssl2_read(s,buf,len));
 247                 }
 248         else
 249                 {
 250                 SSLerr(SSL_F_SSL2_READ,SSL_R_BAD_STATE);
 251                         return(-1);
 252                 }
 253         }
 254
 255 static int read_n(s, n, max, extend)
 256 SSL *s;
 257 unsigned int n;
 258 unsigned int max;
 259 unsigned int extend;
 260         {
 261         int i,off,newb;
 262
 263         /* if there is stuff still in the buffer from a previous read,
 264          * and there is more than we want, take some. */
 265         if (s->s2->rbuf_left >= (int)n)
 266                 {
 267                 if (extend)
 268                         s->packet_length+=n;
 269                 else
 270                         {
 271                         s->packet= &(s->s2->rbuf[s->s2->rbuf_offs]);
 272                         s->packet_length=n;
 273                         }
 274                 s->s2->rbuf_left-=n;
 275                 s->s2->rbuf_offs+=n;
 276                 return(n);
 277                 }
 278
 279         if (!s->read_ahead) max=n;
 280         if (max > (unsigned int)(SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2))
 281                 max=SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2;
 282
 283
 284         /* Else we want more than we have.
 285          * First, if there is some left or we want to extend */
 286         off=0;
 287         if ((s->s2->rbuf_left != 0) || ((s->packet_length != 0) && extend))
 288                 {
 289                 newb=s->s2->rbuf_left;
 290                 if (extend)
 291                         {
 292                         off=s->packet_length;
 293                         if (s->packet != s->s2->rbuf)
 294                                 memcpy(s->s2->rbuf,s->packet,
 295                                         (unsigned int)newb+off);
 296                         }
 297                 else if (s->s2->rbuf_offs != 0)
 298                         {
 299                         memcpy(s->s2->rbuf,&(s->s2->rbuf[s->s2->rbuf_offs]),
 300                                 (unsigned int)newb);
 301                         s->s2->rbuf_offs=0;
 302                         }
 303                 s->s2->rbuf_left=0;
 304                 }
 305         else
 306                 newb=0;
 307
 308         /* off is the offset to start writing too.
 309          * r->s2->rbuf_offs is the 'unread data', now 0.
 310          * newb is the number of new bytes so far
 311          */
 312         s->packet=s->s2->rbuf;
 313         while (newb < (int)n)
 314                 {
 315                 clear_sys_error();
 316                 if (s->rbio != NULL)
 317                         {
 318                         s->rwstate=SSL_READING;
 319                         i=BIO_read(s->rbio,(char *)&(s->s2->rbuf[off+newb]),
 320                                 max-newb);
 321                         }
 322                 else
 323                         {
 324                         SSLerr(SSL_F_READ_N,SSL_R_READ_BIO_NOT_SET);
 325                         i= -1;
 326                         }
 327 #ifdef PKT_DEBUG
 328                 if (s->debug & 0x01) sleep(1);
 329 #endif
 330                 if (i <= 0)
 331                         {
 332                         s->s2->rbuf_left+=newb;
 333                         return(i);
 334                         }
 335                 newb+=i;
 336                 }
 337
 338         /* record unread data */
 339         if (newb > (int)n)
 340                 {
 341                 s->s2->rbuf_offs=n+off;
 342                 s->s2->rbuf_left=newb-n;
 343                 }
 344         else
 345                 {
 346                 s->s2->rbuf_offs=0;
 347                 s->s2->rbuf_left=0;
 348                 }
 349         if (extend)
 350                 s->packet_length+=n;
 351         else
 352                 s->packet_length=n;
 353         s->rwstate=SSL_NOTHING;
 354         return(n);
 355         }
 356
 357 int ssl2_write(s, buf, len)
 358 SSL *s;
 359 const char *buf;
 360 int len;
 361         {
 362         unsigned int n,tot;
 363         int i;
 364
 365         if (SSL_in_init(s) && !s->in_handshake)
 366                 {
 367                 i=s->handshake_func(s);
 368                 if (i < 0) return(i);
 369                 if (i == 0)
 370                         {
 371                         SSLerr(SSL_F_SSL2_WRITE,SSL_R_SSL_HANDSHAKE_FAILURE);
 372                         return(-1);
 373                         }
 374                 }
 375
 376         if (s->error)
 377                 {
 378                 ssl2_write_error(s);
 379                 if (s->error)
 380                         return(-1);
 381                 }
 382
 383         clear_sys_error();
 384         s->rwstate=SSL_NOTHING;
 385         if (len <= 0) return(len);
 386
 387         tot=s->s2->wnum;
 388         s->s2->wnum=0;
 389
 390         n=(len-tot);
 391         for (;;)
 392                 {
 393                 i=do_ssl_write(s,&(buf[tot]),n);
 394                 if (i <= 0)
 395                         {
 396                         s->s2->wnum=tot;
 397                         return(i);
 398                         }
 399                 if (i == (int)n) return(tot+i);
 400
 401                 n-=i;
 402                 tot+=i;
 403                 }
 404         }
 405
 406 static int write_pending(s,buf,len)
 407 SSL *s;
 408 const char *buf;
 409 unsigned int len;
 410         {
 411         int i;
 412
 413         /* s->s2->wpend_len != 0 MUST be true. */
 414
 415         /* check that they have given us the same buffer to
 416          * write */
 417         if ((s->s2->wpend_tot > (int)len) || (s->s2->wpend_buf != buf))
 418                 {
 419                 SSLerr(SSL_F_WRITE_PENDING,SSL_R_BAD_WRITE_RETRY);
 420                 return(-1);
 421                 }
 422
 423         for (;;)
 424                 {
 425                 clear_sys_error();
 426                 if (s->wbio != NULL)
 427                         {
 428                         s->rwstate=SSL_WRITING;
 429                         i=BIO_write(s->wbio,
 430                                 (char *)&(s->s2->write_ptr[s->s2->wpend_off]),
 431                                 (unsigned int)s->s2->wpend_len);
 432                         }
 433                 else
 434                         {
 435                         SSLerr(SSL_F_WRITE_PENDING,SSL_R_WRITE_BIO_NOT_SET);
 436                         i= -1;
 437                         }
 438 #ifdef PKT_DEBUG
 439                 if (s->debug & 0x01) sleep(1);
 440 #endif
 441                 if (i == s->s2->wpend_len)
 442                         {
 443                         s->s2->wpend_len=0;
 444                         s->rwstate=SSL_NOTHING;
 445                         return(s->s2->wpend_ret);
 446                         }
 447                 else if (i <= 0)
 448                         return(i);
 449                 s->s2->wpend_off+=i;
 450                 s->s2->wpend_len-=i;
 451                 }
 452         }
 453
 454 static int do_ssl_write(s, buf, len)
 455 SSL *s;
 456 const char *buf;
 457 unsigned int len;
 458         {
 459         unsigned int j,k,olen,p,mac_size,bs;
 460         register unsigned char *pp;
 461
 462         olen=len;
 463
 464         /* first check if there is data from an encryption waiting to
 465          * be sent - it must be sent because the other end is waiting.
 466          * This will happen with non-blocking IO.  We print it and then
 467          * return.
 468          */
 469         if (s->s2->wpend_len != 0) return(write_pending(s,buf,len));
 470
 471         /* set mac_size to mac size */
 472         if (s->s2->clear_text)
 473                 mac_size=0;
 474         else
 475                 mac_size=EVP_MD_size(s->write_hash);
 476
 477         /* lets set the pad p */
 478         if (s->s2->clear_text)
 479                 {
 480                 if (len > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER)
 481                         len=SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER;
 482                 p=0;
 483                 s->s2->three_byte_header=0;
 484                 /* len=len; */
 485                 }
 486         else
 487                 {
 488                 bs=EVP_CIPHER_CTX_block_size(s->enc_read_ctx);
 489                 j=len+mac_size;
 490                 if ((j > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) &&
 491                         (!s->s2->escape))
 492                         {
 493                         if (j > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER)
 494                                 j=SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER;
 495                         /* set k to the max number of bytes with 2
 496                          * byte header */
 497                         k=j-(j%bs);
 498                         /* how many data bytes? */
 499                         len=k-mac_size;
 500                         s->s2->three_byte_header=0;
 501                         p=0;
 502                         }
 503                 else if ((bs <= 1) && (!s->s2->escape))
 504                         {
 505                         /* len=len; */
 506                         s->s2->three_byte_header=0;
 507                         p=0;
 508                         }
 509                 else /* 3 byte header */
 510                         {
 511                         /*len=len; */
 512                         p=(j%bs);
 513                         p=(p == 0)?0:(bs-p);
 514                         if (s->s2->escape)
 515                                 s->s2->three_byte_header=1;
 516                         else
 517                                 s->s2->three_byte_header=(p == 0)?0:1;
 518                         }
 519                 }
 520         /* mac_size is the number of MAC bytes
 521          * len is the number of data bytes we are going to send
 522          * p is the number of padding bytes
 523          * if p == 0, it is a 2 byte header */
 524
 525         s->s2->wlength=len;
 526         s->s2->padding=p;
 527         s->s2->mac_data= &(s->s2->wbuf[3]);
 528         s->s2->wact_data= &(s->s2->wbuf[3+mac_size]);
 529         /* we copy the data into s->s2->wbuf */
 530         memcpy(s->s2->wact_data,buf,len);
 531 #ifdef PURIFY
 532         if (p)
 533                 memset(&(s->s2->wact_data[len]),0,p);
 534 #endif
 535
 536         if (!s->s2->clear_text)
 537                 {
 538                 s->s2->wact_data_length=len+p;
 539                 ssl2_mac(s,s->s2->mac_data,1);
 540                 s->s2->wlength+=p+mac_size;
 541                 ssl2_enc(s,1);
 542                 }
 543
 544         /* package up the header */
 545         s->s2->wpend_len=s->s2->wlength;
 546         if (s->s2->three_byte_header) /* 3 byte header */
 547                 {
 548                 pp=s->s2->mac_data;
 549                 pp-=3;
 550                 pp[0]=(s->s2->wlength>>8)&(THREE_BYTE_MASK>>8);
 551                 if (s->s2->escape) pp[0]|=SEC_ESC_BIT;
 552                 pp[1]=s->s2->wlength&0xff;
 553                 pp[2]=s->s2->padding;
 554                 s->s2->wpend_len+=3;
 555                 }
 556         else
 557                 {
 558                 pp=s->s2->mac_data;
 559                 pp-=2;
 560                 pp[0]=((s->s2->wlength>>8)&(TWO_BYTE_MASK>>8))|TWO_BYTE_BIT;
 561                 pp[1]=s->s2->wlength&0xff;
 562                 s->s2->wpend_len+=2;
 563                 }
 564         s->s2->write_ptr=pp;
 565
 566         INC32(s->s2->write_sequence); /* expect next number */
 567
 568         /* lets try to actually write the data */
 569         s->s2->wpend_tot=olen;
 570         s->s2->wpend_buf=(char *)buf;
 571
 572         s->s2->wpend_ret=len;
 573
 574         s->s2->wpend_off=0;
 575         return(write_pending(s,buf,olen));
 576         }
 577
 578 int ssl2_part_read(s,f,i)
 579 SSL *s;
 580 unsigned long f;
 581 int i;
 582         {
 583         unsigned char *p;
 584         int j;
 585
 586         /* check for error */
 587         if ((s->init_num == 0) && (i >= 3))
 588                 {
 589                 p=(unsigned char *)s->init_buf->data;
 590                 if (p[0] == SSL2_MT_ERROR)
 591                         {
 592                         j=(p[1]<<8)|p[2];
 593                         SSLerr((int)f,ssl_mt_error(j));
 594                         }
 595                 }
 596
 597         if (i < 0)
 598                 {
 599                 /* ssl2_return_error(s); */
 600                 /* for non-blocking io,
 601                  * this is not fatal */
 602                 return(i);
 603                 }
 604         else
 605                 {
 606                 s->init_num+=i;
 607                 return(0);
 608                 }
 609         }
 610
 611 int ssl2_do_write(s)
 612 SSL *s;
 613         {
 614         int ret;
 615
 616         ret=ssl2_write(s,(char *)&(s->init_buf->data[s->init_off]),
 617                 s->init_num);
 618         if (ret == s->init_num)
 619                 return(1);
 620         if (ret < 0)
 621                 return(-1);
 622         s->init_off+=ret;
 623         s->init_num-=ret;
 624         return(0);
 625         }
 626
 627 static int ssl_mt_error(n)
 628 int n;
 629         {
 630         int ret;
 631
 632         switch (n)
 633                 {
 634         case SSL2_PE_NO_CIPHER:
 635                 ret=SSL_R_PEER_ERROR_NO_CIPHER;
 636                 break;
 637         case SSL2_PE_NO_CERTIFICATE:
 638                 ret=SSL_R_PEER_ERROR_NO_CERTIFICATE;
 639                 break;
 640         case SSL2_PE_BAD_CERTIFICATE:
 641                 ret=SSL_R_PEER_ERROR_CERTIFICATE;
 642                 break;
 643         case SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE:
 644                 ret=SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE;
 645                 break;
 646         default:
 647                 ret=SSL_R_UNKNOWN_REMOTE_ERROR_TYPE;
 648                 break;
 649                 }
 650         return(ret);
 651         }