apps/s_cb.c

   1 /* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */
   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) 1998-2006 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@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 <stdio.h>
 113 #include <stdlib.h>
 114 #define USE_SOCKETS
 115 #define NON_MAIN
 116 #include "apps.h"
 117 #undef NON_MAIN
 118 #undef USE_SOCKETS
 119 #include <openssl/err.h>
 120 #include <openssl/x509.h>
 121 #include <openssl/ssl.h>
 122 #include "s_apps.h"
 123
 124 int verify_depth=0;
 125 int verify_error=X509_V_OK;
 126 int verify_return_error=0;
 127
 128 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
 129         {
 130         char buf[256];
 131         X509 *err_cert;
 132         int err,depth;
 133
 134         err_cert=X509_STORE_CTX_get_current_cert(ctx);
 135         err=    X509_STORE_CTX_get_error(ctx);
 136         depth=  X509_STORE_CTX_get_error_depth(ctx);
 137
 138         X509_NAME_oneline(X509_get_subject_name(err_cert),buf,sizeof buf);
 139         BIO_printf(bio_err,"depth=%d %s\n",depth,buf);
 140         if (!ok)
 141                 {
 142                 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
 143                         X509_verify_cert_error_string(err));
 144                 if (verify_depth >= depth)
 145                         {
 146                         if (!verify_return_error)
 147                                 ok=1;
 148                         verify_error=X509_V_OK;
 149                         }
 150                 else
 151                         {
 152                         ok=0;
 153                         verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
 154                         }
 155                 }
 156         switch (ctx->error)
 157                 {
 158         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
 159                 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,sizeof buf);
 160                 BIO_printf(bio_err,"issuer= %s\n",buf);
 161                 break;
 162         case X509_V_ERR_CERT_NOT_YET_VALID:
 163         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
 164                 BIO_printf(bio_err,"notBefore=");
 165                 ASN1_TIME_print(bio_err,X509_get_notBefore(ctx->current_cert));
 166                 BIO_printf(bio_err,"\n");
 167                 break;
 168         case X509_V_ERR_CERT_HAS_EXPIRED:
 169         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
 170                 BIO_printf(bio_err,"notAfter=");
 171                 ASN1_TIME_print(bio_err,X509_get_notAfter(ctx->current_cert));
 172                 BIO_printf(bio_err,"\n");
 173                 break;
 174                 }
 175         BIO_printf(bio_err,"verify return:%d\n",ok);
 176         return(ok);
 177         }
 178
 179 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
 180         {
 181         if (cert_file != NULL)
 182                 {
 183                 /*
 184                 SSL *ssl;
 185                 X509 *x509;
 186                 */
 187
 188                 if (SSL_CTX_use_certificate_file(ctx,cert_file,
 189                         SSL_FILETYPE_PEM) <= 0)
 190                         {
 191                         BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
 192                         ERR_print_errors(bio_err);
 193                         return(0);
 194                         }
 195                 if (key_file == NULL) key_file=cert_file;
 196                 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
 197                         SSL_FILETYPE_PEM) <= 0)
 198                         {
 199                         BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
 200                         ERR_print_errors(bio_err);
 201                         return(0);
 202                         }
 203
 204                 /*
 205                 In theory this is no longer needed
 206                 ssl=SSL_new(ctx);
 207                 x509=SSL_get_certificate(ssl);
 208
 209                 if (x509 != NULL) {
 210                         EVP_PKEY *pktmp;
 211                         pktmp = X509_get_pubkey(x509);
 212                         EVP_PKEY_copy_parameters(pktmp,
 213                                                 SSL_get_privatekey(ssl));
 214                         EVP_PKEY_free(pktmp);
 215                 }
 216                 SSL_free(ssl);
 217                 */
 218
 219                 /* If we are using DSA, we can copy the parameters from
 220                  * the private key */
 221
 222
 223                 /* Now we know that a key and cert have been set against
 224                  * the SSL context */
 225                 if (!SSL_CTX_check_private_key(ctx))
 226                         {
 227                         BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 228                         return(0);
 229                         }
 230                 }
 231         return(1);
 232         }
 233
 234 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key)
 235         {
 236         if (cert ==  NULL)
 237                 return 1;
 238         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
 239                 {
 240                 BIO_printf(bio_err,"error setting certificate\n");
 241                 ERR_print_errors(bio_err);
 242                 return 0;
 243                 }
 244         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
 245                 {
 246                 BIO_printf(bio_err,"error setting private key\n");
 247                 ERR_print_errors(bio_err);
 248                 return 0;
 249                 }
 250
 251
 252                 /* Now we know that a key and cert have been set against
 253                  * the SSL context */
 254         if (!SSL_CTX_check_private_key(ctx))
 255                 {
 256                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 257                 return 0;
 258                 }
 259         return 1;
 260         }
 261
 262 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 263         int argi, long argl, long ret)
 264         {
 265         BIO *out;
 266
 267         out=(BIO *)BIO_get_callback_arg(bio);
 268         if (out == NULL) return(ret);
 269
 270         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 271                 {
 272                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 273                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 274                 BIO_dump(out,argp,(int)ret);
 275                 return(ret);
 276                 }
 277         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 278                 {
 279                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 280                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 281                 BIO_dump(out,argp,(int)ret);
 282                 }
 283         return(ret);
 284         }
 285
 286 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 287         {
 288         const char *str;
 289         int w;
 290
 291         w=where& ~SSL_ST_MASK;
 292
 293         if (w & SSL_ST_CONNECT) str="SSL_connect";
 294         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 295         else str="undefined";
 296
 297         if (where & SSL_CB_LOOP)
 298                 {
 299                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 300                 }
 301         else if (where & SSL_CB_ALERT)
 302                 {
 303                 str=(where & SSL_CB_READ)?"read":"write";
 304                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 305                         str,
 306                         SSL_alert_type_string_long(ret),
 307                         SSL_alert_desc_string_long(ret));
 308                 }
 309         else if (where & SSL_CB_EXIT)
 310                 {
 311                 if (ret == 0)
 312                         BIO_printf(bio_err,"%s:failed in %s\n",
 313                                 str,SSL_state_string_long(s));
 314                 else if (ret < 0)
 315                         {
 316                         BIO_printf(bio_err,"%s:error in %s\n",
 317                                 str,SSL_state_string_long(s));
 318                         }
 319                 }
 320         }
 321
 322
 323 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 324         {
 325         BIO *bio = arg;
 326         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 327
 328         str_write_p = write_p ? ">>>" : "<<<";
 329
 330         switch (version)
 331                 {
 332         case SSL2_VERSION:
 333                 str_version = "SSL 2.0";
 334                 break;
 335         case SSL3_VERSION:
 336                 str_version = "SSL 3.0 ";
 337                 break;
 338         case TLS1_VERSION:
 339                 str_version = "TLS 1.0 ";
 340                 break;
 341         default:
 342                 str_version = "???";
 343                 }
 344
 345         if (version == SSL2_VERSION)
 346                 {
 347                 str_details1 = "???";
 348
 349                 if (len > 0)
 350                         {
 351                         switch (((const unsigned char*)buf)[0])
 352                                 {
 353                                 case 0:
 354                                         str_details1 = ", ERROR:";
 355                                         str_details2 = " ???";
 356                                         if (len >= 3)
 357                                                 {
 358                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 359
 360                                                 switch (err)
 361                                                         {
 362                                                 case 0x0001:
 363                                                         str_details2 = " NO-CIPHER-ERROR";
 364                                                         break;
 365                                                 case 0x0002:
 366                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 367                                                         break;
 368                                                 case 0x0004:
 369                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 370                                                         break;
 371                                                 case 0x0006:
 372                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 373                                                         break;
 374                                                         }
 375                                                 }
 376
 377                                         break;
 378                                 case 1:
 379                                         str_details1 = ", CLIENT-HELLO";
 380                                         break;
 381                                 case 2:
 382                                         str_details1 = ", CLIENT-MASTER-KEY";
 383                                         break;
 384                                 case 3:
 385                                         str_details1 = ", CLIENT-FINISHED";
 386                                         break;
 387                                 case 4:
 388                                         str_details1 = ", SERVER-HELLO";
 389                                         break;
 390                                 case 5:
 391                                         str_details1 = ", SERVER-VERIFY";
 392                                         break;
 393                                 case 6:
 394                                         str_details1 = ", SERVER-FINISHED";
 395                                         break;
 396                                 case 7:
 397                                         str_details1 = ", REQUEST-CERTIFICATE";
 398                                         break;
 399                                 case 8:
 400                                         str_details1 = ", CLIENT-CERTIFICATE";
 401                                         break;
 402                                 }
 403                         }
 404                 }
 405
 406         if (version == SSL3_VERSION || version == TLS1_VERSION)
 407                 {
 408                 switch (content_type)
 409                         {
 410                 case 20:
 411                         str_content_type = "ChangeCipherSpec";
 412                         break;
 413                 case 21:
 414                         str_content_type = "Alert";
 415                         break;
 416                 case 22:
 417                         str_content_type = "Handshake";
 418                         break;
 419                         }
 420
 421                 if (content_type == 21) /* Alert */
 422                         {
 423                         str_details1 = ", ???";
 424
 425                         if (len == 2)
 426                                 {
 427                                 switch (((const unsigned char*)buf)[0])
 428                                         {
 429                                 case 1:
 430                                         str_details1 = ", warning";
 431                                         break;
 432                                 case 2:
 433                                         str_details1 = ", fatal";
 434                                         break;
 435                                         }
 436
 437                                 str_details2 = " ???";
 438                                 switch (((const unsigned char*)buf)[1])
 439                                         {
 440                                 case 0:
 441                                         str_details2 = " close_notify";
 442                                         break;
 443                                 case 10:
 444                                         str_details2 = " unexpected_message";
 445                                         break;
 446                                 case 20:
 447                                         str_details2 = " bad_record_mac";
 448                                         break;
 449                                 case 21:
 450                                         str_details2 = " decryption_failed";
 451                                         break;
 452                                 case 22:
 453                                         str_details2 = " record_overflow";
 454                                         break;
 455                                 case 30:
 456                                         str_details2 = " decompression_failure";
 457                                         break;
 458                                 case 40:
 459                                         str_details2 = " handshake_failure";
 460                                         break;
 461                                 case 42:
 462                                         str_details2 = " bad_certificate";
 463                                         break;
 464                                 case 43:
 465                                         str_details2 = " unsupported_certificate";
 466                                         break;
 467                                 case 44:
 468                                         str_details2 = " certificate_revoked";
 469                                         break;
 470                                 case 45:
 471                                         str_details2 = " certificate_expired";
 472                                         break;
 473                                 case 46:
 474                                         str_details2 = " certificate_unknown";
 475                                         break;
 476                                 case 47:
 477                                         str_details2 = " illegal_parameter";
 478                                         break;
 479                                 case 48:
 480                                         str_details2 = " unknown_ca";
 481                                         break;
 482                                 case 49:
 483                                         str_details2 = " access_denied";
 484                                         break;
 485                                 case 50:
 486                                         str_details2 = " decode_error";
 487                                         break;
 488                                 case 51:
 489                                         str_details2 = " decrypt_error";
 490                                         break;
 491                                 case 60:
 492                                         str_details2 = " export_restriction";
 493                                         break;
 494                                 case 70:
 495                                         str_details2 = " protocol_version";
 496                                         break;
 497                                 case 71:
 498                                         str_details2 = " insufficient_security";
 499                                         break;
 500                                 case 80:
 501                                         str_details2 = " internal_error";
 502                                         break;
 503                                 case 90:
 504                                         str_details2 = " user_canceled";
 505                                         break;
 506                                 case 100:
 507                                         str_details2 = " no_renegotiation";
 508                                         break;
 509                                 case 110:
 510                                         str_details2 = " unsupported_extension";
 511                                         break;
 512                                 case 111:
 513                                         str_details2 = " certificate_unobtainable";
 514                                         break;
 515                                 case 112:
 516                                         str_details2 = " unrecognized_name";
 517                                         break;
 518                                 case 113:
 519                                         str_details2 = " bad_certificate_status_response";
 520                                         break;
 521                                 case 114:
 522                                         str_details2 = " bad_certificate_hash_value";
 523                                         break;
 524                                         }
 525                                 }
 526                         }
 527
 528                 if (content_type == 22) /* Handshake */
 529                         {
 530                         str_details1 = "???";
 531
 532                         if (len > 0)
 533                                 {
 534                                 switch (((const unsigned char*)buf)[0])
 535                                         {
 536                                 case 0:
 537                                         str_details1 = ", HelloRequest";
 538                                         break;
 539                                 case 1:
 540                                         str_details1 = ", ClientHello";
 541                                         break;
 542                                 case 2:
 543                                         str_details1 = ", ServerHello";
 544                                         break;
 545                                 case 11:
 546                                         str_details1 = ", Certificate";
 547                                         break;
 548                                 case 12:
 549                                         str_details1 = ", ServerKeyExchange";
 550                                         break;
 551                                 case 13:
 552                                         str_details1 = ", CertificateRequest";
 553                                         break;
 554                                 case 14:
 555                                         str_details1 = ", ServerHelloDone";
 556                                         break;
 557                                 case 15:
 558                                         str_details1 = ", CertificateVerify";
 559                                         break;
 560                                 case 16:
 561                                         str_details1 = ", ClientKeyExchange";
 562                                         break;
 563                                 case 20:
 564                                         str_details1 = ", Finished";
 565                                         break;
 566                                         }
 567                                 }
 568                         }
 569                 }
 570
 571         BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, str_content_type, (unsigned long)len, str_details1, str_details2);
 572
 573         if (len > 0)
 574                 {
 575                 size_t num, i;
 576
 577                 BIO_printf(bio, "   ");
 578                 num = len;
 579 #if 0
 580                 if (num > 16)
 581                         num = 16;
 582 #endif
 583                 for (i = 0; i < num; i++)
 584                         {
 585                         if (i % 16 == 0 && i > 0)
 586                                 BIO_printf(bio, "\n   ");
 587                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 588                         }
 589                 if (i < len)
 590                         BIO_printf(bio, " ...");
 591                 BIO_printf(bio, "\n");
 592                 }
 593         (void)BIO_flush(bio);
 594         }
 595
 596 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 597                                         unsigned char *data, int len,
 598                                         void *arg)
 599         {
 600         BIO *bio = arg;
 601         char *extname;
 602
 603         switch(type)
 604                 {
 605                 case TLSEXT_TYPE_server_name:
 606                 extname = "server name";
 607                 break;
 608
 609                 case TLSEXT_TYPE_max_fragment_length:
 610                 extname = "max fragment length";
 611                 break;
 612
 613                 case TLSEXT_TYPE_client_certificate_url:
 614                 extname = "client certificate URL";
 615                 break;
 616
 617                 case TLSEXT_TYPE_trusted_ca_keys:
 618                 extname = "trusted CA keys";
 619                 break;
 620
 621                 case TLSEXT_TYPE_truncated_hmac:
 622                 extname = "truncated HMAC";
 623                 break;
 624
 625                 case TLSEXT_TYPE_status_request:
 626                 extname = "status request";
 627                 break;
 628
 629                 case TLSEXT_TYPE_elliptic_curves:
 630                 extname = "elliptic curves";
 631                 break;
 632
 633                 case TLSEXT_TYPE_ec_point_formats:
 634                 extname = "EC point formats";
 635                 break;
 636
 637                 case TLSEXT_TYPE_session_ticket:
 638                 extname = "server ticket";
 639                 break;
 640
 641 #ifdef TLSEXT_TYPE_opaque_prf_input
 642                 case TLSEXT_TYPE_opaque_prf_input:
 643                 extname = "opaque PRF input";
 644                 break;
 645 #endif
 646
 647                 default:
 648                 extname = "unknown";
 649                 break;
 650
 651                 }
 652
 653         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
 654                         client_server ? "server": "client",
 655                         extname, type, len);
 656         BIO_dump(bio, (char *)data, len);
 657         (void)BIO_flush(bio);
 658         }