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/rand.h>
 121 #include <openssl/x509.h>
 122 #include <openssl/ssl.h>
 123 #include "s_apps.h"
 124
 125 #define COOKIE_SECRET_LENGTH    16
 126
 127 int verify_depth=0;
 128 int verify_error=X509_V_OK;
 129 int verify_return_error=0;
 130 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
 131 int cookie_initialized=0;
 132
 133 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
 134         {
 135         X509 *err_cert;
 136         int err,depth;
 137
 138         err_cert=X509_STORE_CTX_get_current_cert(ctx);
 139         err=    X509_STORE_CTX_get_error(ctx);
 140         depth=  X509_STORE_CTX_get_error_depth(ctx);
 141
 142         BIO_printf(bio_err,"depth=%d ",depth);
 143         if (err_cert)
 144                 {
 145                 X509_NAME_print_ex(bio_err, X509_get_subject_name(err_cert),
 146                                         0, XN_FLAG_ONELINE);
 147                 BIO_puts(bio_err, "\n");
 148                 }
 149         else
 150                 BIO_puts(bio_err, "<no cert>\n");
 151         if (!ok)
 152                 {
 153                 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
 154                         X509_verify_cert_error_string(err));
 155                 if (verify_depth >= depth)
 156                         {
 157                         if (!verify_return_error)
 158                                 ok=1;
 159                         verify_error=X509_V_OK;
 160                         }
 161                 else
 162                         {
 163                         ok=0;
 164                         verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
 165                         }
 166                 }
 167         switch (err)
 168                 {
 169         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
 170                 BIO_puts(bio_err,"issuer= ");
 171                 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
 172                                         0, XN_FLAG_ONELINE);
 173                 BIO_puts(bio_err, "\n");
 174                 break;
 175         case X509_V_ERR_CERT_NOT_YET_VALID:
 176         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
 177                 BIO_printf(bio_err,"notBefore=");
 178                 ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
 179                 BIO_printf(bio_err,"\n");
 180                 break;
 181         case X509_V_ERR_CERT_HAS_EXPIRED:
 182         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
 183                 BIO_printf(bio_err,"notAfter=");
 184                 ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
 185                 BIO_printf(bio_err,"\n");
 186                 break;
 187         case X509_V_ERR_NO_EXPLICIT_POLICY:
 188                 policies_print(bio_err, ctx);
 189                 break;
 190                 }
 191         if (err == X509_V_OK && ok == 2)
 192                 policies_print(bio_err, ctx);
 193
 194         BIO_printf(bio_err,"verify return:%d\n",ok);
 195         return(ok);
 196         }
 197
 198 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
 199         {
 200         if (cert_file != NULL)
 201                 {
 202                 /*
 203                 SSL *ssl;
 204                 X509 *x509;
 205                 */
 206
 207                 if (SSL_CTX_use_certificate_file(ctx,cert_file,
 208                         SSL_FILETYPE_PEM) <= 0)
 209                         {
 210                         BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
 211                         ERR_print_errors(bio_err);
 212                         return(0);
 213                         }
 214                 if (key_file == NULL) key_file=cert_file;
 215                 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
 216                         SSL_FILETYPE_PEM) <= 0)
 217                         {
 218                         BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
 219                         ERR_print_errors(bio_err);
 220                         return(0);
 221                         }
 222
 223                 /*
 224                 In theory this is no longer needed
 225                 ssl=SSL_new(ctx);
 226                 x509=SSL_get_certificate(ssl);
 227
 228                 if (x509 != NULL) {
 229                         EVP_PKEY *pktmp;
 230                         pktmp = X509_get_pubkey(x509);
 231                         EVP_PKEY_copy_parameters(pktmp,
 232                                                 SSL_get_privatekey(ssl));
 233                         EVP_PKEY_free(pktmp);
 234                 }
 235                 SSL_free(ssl);
 236                 */
 237
 238                 /* If we are using DSA, we can copy the parameters from
 239                  * the private key */
 240
 241
 242                 /* Now we know that a key and cert have been set against
 243                  * the SSL context */
 244                 if (!SSL_CTX_check_private_key(ctx))
 245                         {
 246                         BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 247                         return(0);
 248                         }
 249                 }
 250         return(1);
 251         }
 252
 253 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key)
 254         {
 255         if (cert ==  NULL)
 256                 return 1;
 257         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
 258                 {
 259                 BIO_printf(bio_err,"error setting certificate\n");
 260                 ERR_print_errors(bio_err);
 261                 return 0;
 262                 }
 263         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
 264                 {
 265                 BIO_printf(bio_err,"error setting private key\n");
 266                 ERR_print_errors(bio_err);
 267                 return 0;
 268                 }
 269
 270
 271                 /* Now we know that a key and cert have been set against
 272                  * the SSL context */
 273         if (!SSL_CTX_check_private_key(ctx))
 274                 {
 275                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 276                 return 0;
 277                 }
 278         return 1;
 279         }
 280
 281 int ssl_print_sigalgs(BIO *out, SSL *s)
 282         {
 283         int i, nsig;
 284         nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 285         if (nsig == 0)
 286                 return 1;
 287
 288         BIO_puts(out, "Signature Algorithms: ");
 289         for (i = 0; i < nsig; i++)
 290                 {
 291                 int hash_nid, sign_nid;
 292                 unsigned char rhash, rsign;
 293                 const char *sstr = NULL;
 294                 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 295                                                         &rsign, &rhash);
 296                 if (i)
 297                         BIO_puts(out, ":");
 298                 if (sign_nid == EVP_PKEY_RSA)
 299                         sstr = "RSA";
 300                 else if(sign_nid == EVP_PKEY_DSA)
 301                         sstr = "DSA";
 302                 else if(sign_nid == EVP_PKEY_EC)
 303                         sstr = "ECDSA";
 304                 if (sstr)
 305                         BIO_printf(out,"%s+", sstr);
 306                 else
 307                         BIO_printf(out,"0x%02X+", (int)rsign);
 308                 if (hash_nid != NID_undef)
 309                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
 310                 else
 311                         BIO_printf(out,"0x%02X", (int)rhash);
 312                 }
 313         BIO_puts(out, "\n");
 314         return 1;
 315         }
 316
 317 int ssl_print_curves(BIO *out, SSL *s)
 318         {
 319         int i, ncurves, *curves, nid;
 320         const char *cname;
 321         ncurves = SSL_get1_curves(s, NULL);
 322         if (ncurves <= 0)
 323                 return 1;
 324         curves = OPENSSL_malloc(ncurves * sizeof(int));
 325         SSL_get1_curves(s, curves);
 326
 327         BIO_puts(out, "Supported Elliptic Curves: ");
 328         for (i = 0; i < ncurves; i++)
 329                 {
 330                 if (i)
 331                         BIO_puts(out, ":");
 332                 nid = curves[i];
 333                 /* If unrecognised print out hex version */
 334                 if (nid & TLSEXT_nid_unknown)
 335                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 336                 else
 337                         {
 338                         /* Use NIST name for curve if it exists */
 339                         cname = EC_curve_nid2nist(nid);
 340                         if (!cname)
 341                                 cname = OBJ_nid2sn(nid);
 342                         BIO_printf(out, "%s", cname);
 343                         }
 344                 }
 345         BIO_puts(out, "\nShared Elliptic curves: ");
 346         OPENSSL_free(curves);
 347         ncurves = SSL_get_shared_curve(s, -1);
 348         for (i = 0; i < ncurves; i++)
 349                 {
 350                 if (i)
 351                         BIO_puts(out, ":");
 352                 nid = SSL_get_shared_curve(s, i);
 353                 cname = EC_curve_nid2nist(nid);
 354                 if (!cname)
 355                         cname = OBJ_nid2sn(nid);
 356                 BIO_printf(out, "%s", cname);
 357                 }
 358         BIO_puts(out, "\n");
 359         return 1;
 360         }
 361
 362
 363 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 364                                    int argi, long argl, long ret)
 365         {
 366         BIO *out;
 367
 368         out=(BIO *)BIO_get_callback_arg(bio);
 369         if (out == NULL) return(ret);
 370
 371         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 372                 {
 373                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 374                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 375                 BIO_dump(out,argp,(int)ret);
 376                 return(ret);
 377                 }
 378         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 379                 {
 380                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 381                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 382                 BIO_dump(out,argp,(int)ret);
 383                 }
 384         return(ret);
 385         }
 386
 387 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 388         {
 389         const char *str;
 390         int w;
 391
 392         w=where& ~SSL_ST_MASK;
 393
 394         if (w & SSL_ST_CONNECT) str="SSL_connect";
 395         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 396         else str="undefined";
 397
 398         if (where & SSL_CB_LOOP)
 399                 {
 400                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 401                 }
 402         else if (where & SSL_CB_ALERT)
 403                 {
 404                 str=(where & SSL_CB_READ)?"read":"write";
 405                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 406                         str,
 407                         SSL_alert_type_string_long(ret),
 408                         SSL_alert_desc_string_long(ret));
 409                 }
 410         else if (where & SSL_CB_EXIT)
 411                 {
 412                 if (ret == 0)
 413                         BIO_printf(bio_err,"%s:failed in %s\n",
 414                                 str,SSL_state_string_long(s));
 415                 else if (ret < 0)
 416                         {
 417                         BIO_printf(bio_err,"%s:error in %s\n",
 418                                 str,SSL_state_string_long(s));
 419                         }
 420                 }
 421         }
 422
 423
 424 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 425         {
 426         BIO *bio = arg;
 427         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 428
 429         str_write_p = write_p ? ">>>" : "<<<";
 430
 431         switch (version)
 432                 {
 433         case SSL2_VERSION:
 434                 str_version = "SSL 2.0";
 435                 break;
 436         case SSL3_VERSION:
 437                 str_version = "SSL 3.0 ";
 438                 break;
 439         case TLS1_VERSION:
 440                 str_version = "TLS 1.0 ";
 441                 break;
 442         case TLS1_1_VERSION:
 443                 str_version = "TLS 1.1 ";
 444                 break;
 445         case TLS1_2_VERSION:
 446                 str_version = "TLS 1.2 ";
 447                 break;
 448         case DTLS1_VERSION:
 449                 str_version = "DTLS 1.0 ";
 450                 break;
 451         case DTLS1_BAD_VER:
 452                 str_version = "DTLS 1.0 (bad) ";
 453                 break;
 454         default:
 455                 str_version = "???";
 456                 }
 457
 458         if (version == SSL2_VERSION)
 459                 {
 460                 str_details1 = "???";
 461
 462                 if (len > 0)
 463                         {
 464                         switch (((const unsigned char*)buf)[0])
 465                                 {
 466                                 case 0:
 467                                         str_details1 = ", ERROR:";
 468                                         str_details2 = " ???";
 469                                         if (len >= 3)
 470                                                 {
 471                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 472
 473                                                 switch (err)
 474                                                         {
 475                                                 case 0x0001:
 476                                                         str_details2 = " NO-CIPHER-ERROR";
 477                                                         break;
 478                                                 case 0x0002:
 479                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 480                                                         break;
 481                                                 case 0x0004:
 482                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 483                                                         break;
 484                                                 case 0x0006:
 485                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 486                                                         break;
 487                                                         }
 488                                                 }
 489
 490                                         break;
 491                                 case 1:
 492                                         str_details1 = ", CLIENT-HELLO";
 493                                         break;
 494                                 case 2:
 495                                         str_details1 = ", CLIENT-MASTER-KEY";
 496                                         break;
 497                                 case 3:
 498                                         str_details1 = ", CLIENT-FINISHED";
 499                                         break;
 500                                 case 4:
 501                                         str_details1 = ", SERVER-HELLO";
 502                                         break;
 503                                 case 5:
 504                                         str_details1 = ", SERVER-VERIFY";
 505                                         break;
 506                                 case 6:
 507                                         str_details1 = ", SERVER-FINISHED";
 508                                         break;
 509                                 case 7:
 510                                         str_details1 = ", REQUEST-CERTIFICATE";
 511                                         break;
 512                                 case 8:
 513                                         str_details1 = ", CLIENT-CERTIFICATE";
 514                                         break;
 515                                 }
 516                         }
 517                 }
 518
 519         if (version == SSL3_VERSION ||
 520             version == TLS1_VERSION ||
 521             version == DTLS1_VERSION ||
 522             version == DTLS1_BAD_VER)
 523                 {
 524                 switch (content_type)
 525                         {
 526                 case 20:
 527                         str_content_type = "ChangeCipherSpec";
 528                         break;
 529                 case 21:
 530                         str_content_type = "Alert";
 531                         break;
 532                 case 22:
 533                         str_content_type = "Handshake";
 534                         break;
 535                         }
 536
 537                 if (content_type == 21) /* Alert */
 538                         {
 539                         str_details1 = ", ???";
 540
 541                         if (len == 2)
 542                                 {
 543                                 switch (((const unsigned char*)buf)[0])
 544                                         {
 545                                 case 1:
 546                                         str_details1 = ", warning";
 547                                         break;
 548                                 case 2:
 549                                         str_details1 = ", fatal";
 550                                         break;
 551                                         }
 552
 553                                 str_details2 = " ???";
 554                                 switch (((const unsigned char*)buf)[1])
 555                                         {
 556                                 case 0:
 557                                         str_details2 = " close_notify";
 558                                         break;
 559                                 case 10:
 560                                         str_details2 = " unexpected_message";
 561                                         break;
 562                                 case 20:
 563                                         str_details2 = " bad_record_mac";
 564                                         break;
 565                                 case 21:
 566                                         str_details2 = " decryption_failed";
 567                                         break;
 568                                 case 22:
 569                                         str_details2 = " record_overflow";
 570                                         break;
 571                                 case 30:
 572                                         str_details2 = " decompression_failure";
 573                                         break;
 574                                 case 40:
 575                                         str_details2 = " handshake_failure";
 576                                         break;
 577                                 case 42:
 578                                         str_details2 = " bad_certificate";
 579                                         break;
 580                                 case 43:
 581                                         str_details2 = " unsupported_certificate";
 582                                         break;
 583                                 case 44:
 584                                         str_details2 = " certificate_revoked";
 585                                         break;
 586                                 case 45:
 587                                         str_details2 = " certificate_expired";
 588                                         break;
 589                                 case 46:
 590                                         str_details2 = " certificate_unknown";
 591                                         break;
 592                                 case 47:
 593                                         str_details2 = " illegal_parameter";
 594                                         break;
 595                                 case 48:
 596                                         str_details2 = " unknown_ca";
 597                                         break;
 598                                 case 49:
 599                                         str_details2 = " access_denied";
 600                                         break;
 601                                 case 50:
 602                                         str_details2 = " decode_error";
 603                                         break;
 604                                 case 51:
 605                                         str_details2 = " decrypt_error";
 606                                         break;
 607                                 case 60:
 608                                         str_details2 = " export_restriction";
 609                                         break;
 610                                 case 70:
 611                                         str_details2 = " protocol_version";
 612                                         break;
 613                                 case 71:
 614                                         str_details2 = " insufficient_security";
 615                                         break;
 616                                 case 80:
 617                                         str_details2 = " internal_error";
 618                                         break;
 619                                 case 90:
 620                                         str_details2 = " user_canceled";
 621                                         break;
 622                                 case 100:
 623                                         str_details2 = " no_renegotiation";
 624                                         break;
 625                                 case 110:
 626                                         str_details2 = " unsupported_extension";
 627                                         break;
 628                                 case 111:
 629                                         str_details2 = " certificate_unobtainable";
 630                                         break;
 631                                 case 112:
 632                                         str_details2 = " unrecognized_name";
 633                                         break;
 634                                 case 113:
 635                                         str_details2 = " bad_certificate_status_response";
 636                                         break;
 637                                 case 114:
 638                                         str_details2 = " bad_certificate_hash_value";
 639                                         break;
 640                                 case 115:
 641                                         str_details2 = " unknown_psk_identity";
 642                                         break;
 643                                         }
 644                                 }
 645                         }
 646
 647                 if (content_type == 22) /* Handshake */
 648                         {
 649                         str_details1 = "???";
 650
 651                         if (len > 0)
 652                                 {
 653                                 switch (((const unsigned char*)buf)[0])
 654                                         {
 655                                 case 0:
 656                                         str_details1 = ", HelloRequest";
 657                                         break;
 658                                 case 1:
 659                                         str_details1 = ", ClientHello";
 660                                         break;
 661                                 case 2:
 662                                         str_details1 = ", ServerHello";
 663                                         break;
 664                                 case 3:
 665                                         str_details1 = ", HelloVerifyRequest";
 666                                         break;
 667                                 case 11:
 668                                         str_details1 = ", Certificate";
 669                                         break;
 670                                 case 12:
 671                                         str_details1 = ", ServerKeyExchange";
 672                                         break;
 673                                 case 13:
 674                                         str_details1 = ", CertificateRequest";
 675                                         break;
 676                                 case 14:
 677                                         str_details1 = ", ServerHelloDone";
 678                                         break;
 679                                 case 15:
 680                                         str_details1 = ", CertificateVerify";
 681                                         break;
 682                                 case 16:
 683                                         str_details1 = ", ClientKeyExchange";
 684                                         break;
 685                                 case 20:
 686                                         str_details1 = ", Finished";
 687                                         break;
 688                                         }
 689                                 }
 690                         }
 691
 692 #ifndef OPENSSL_NO_HEARTBEATS
 693                 if (content_type == 24) /* Heartbeat */
 694                         {
 695                         str_details1 = ", Heartbeat";
 696
 697                         if (len > 0)
 698                                 {
 699                                 switch (((const unsigned char*)buf)[0])
 700                                         {
 701                                 case 1:
 702                                         str_details1 = ", HeartbeatRequest";
 703                                         break;
 704                                 case 2:
 705                                         str_details1 = ", HeartbeatResponse";
 706                                         break;
 707                                         }
 708                                 }
 709                         }
 710 #endif
 711                 }
 712
 713         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);
 714
 715         if (len > 0)
 716                 {
 717                 size_t num, i;
 718
 719                 BIO_printf(bio, "   ");
 720                 num = len;
 721 #if 0
 722                 if (num > 16)
 723                         num = 16;
 724 #endif
 725                 for (i = 0; i < num; i++)
 726                         {
 727                         if (i % 16 == 0 && i > 0)
 728                                 BIO_printf(bio, "\n   ");
 729                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 730                         }
 731                 if (i < len)
 732                         BIO_printf(bio, " ...");
 733                 BIO_printf(bio, "\n");
 734                 }
 735         (void)BIO_flush(bio);
 736         }
 737
 738 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 739                                         unsigned char *data, int len,
 740                                         void *arg)
 741         {
 742         BIO *bio = arg;
 743         char *extname;
 744
 745         switch(type)
 746                 {
 747                 case TLSEXT_TYPE_server_name:
 748                 extname = "server name";
 749                 break;
 750
 751                 case TLSEXT_TYPE_max_fragment_length:
 752                 extname = "max fragment length";
 753                 break;
 754
 755                 case TLSEXT_TYPE_client_certificate_url:
 756                 extname = "client certificate URL";
 757                 break;
 758
 759                 case TLSEXT_TYPE_trusted_ca_keys:
 760                 extname = "trusted CA keys";
 761                 break;
 762
 763                 case TLSEXT_TYPE_truncated_hmac:
 764                 extname = "truncated HMAC";
 765                 break;
 766
 767                 case TLSEXT_TYPE_status_request:
 768                 extname = "status request";
 769                 break;
 770
 771                 case TLSEXT_TYPE_user_mapping:
 772                 extname = "user mapping";
 773                 break;
 774
 775                 case TLSEXT_TYPE_client_authz:
 776                 extname = "client authz";
 777                 break;
 778
 779                 case TLSEXT_TYPE_server_authz:
 780                 extname = "server authz";
 781                 break;
 782
 783                 case TLSEXT_TYPE_cert_type:
 784                 extname = "cert type";
 785                 break;
 786
 787                 case TLSEXT_TYPE_elliptic_curves:
 788                 extname = "elliptic curves";
 789                 break;
 790
 791                 case TLSEXT_TYPE_ec_point_formats:
 792                 extname = "EC point formats";
 793                 break;
 794
 795                 case TLSEXT_TYPE_srp:
 796                 extname = "SRP";
 797                 break;
 798
 799                 case TLSEXT_TYPE_signature_algorithms:
 800                 extname = "signature algorithms";
 801                 break;
 802
 803                 case TLSEXT_TYPE_use_srtp:
 804                 extname = "use SRTP";
 805                 break;
 806
 807                 case TLSEXT_TYPE_heartbeat:
 808                 extname = "heartbeat";
 809                 break;
 810
 811                 case TLSEXT_TYPE_session_ticket:
 812                 extname = "session ticket";
 813                 break;
 814
 815                 case TLSEXT_TYPE_renegotiate:
 816                 extname = "renegotiation info";
 817                 break;
 818
 819 #ifdef TLSEXT_TYPE_opaque_prf_input
 820                 case TLSEXT_TYPE_opaque_prf_input:
 821                 extname = "opaque PRF input";
 822                 break;
 823 #endif
 824 #ifdef TLSEXT_TYPE_next_proto_neg
 825                 case TLSEXT_TYPE_next_proto_neg:
 826                 extname = "next protocol";
 827                 break;
 828 #endif
 829
 830                 default:
 831                 extname = "unknown";
 832                 break;
 833
 834                 }
 835
 836         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
 837                         client_server ? "server": "client",
 838                         extname, type, len);
 839         BIO_dump(bio, (char *)data, len);
 840         (void)BIO_flush(bio);
 841         }
 842
 843 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
 844         {
 845         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 846         unsigned int length, resultlength;
 847         union {
 848                 struct sockaddr sa;
 849                 struct sockaddr_in s4;
 850 #if OPENSSL_USE_IPV6
 851                 struct sockaddr_in6 s6;
 852 #endif
 853         } peer;
 854
 855         /* Initialize a random secret */
 856         if (!cookie_initialized)
 857                 {
 858                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
 859                         {
 860                         BIO_printf(bio_err,"error setting random cookie secret\n");
 861                         return 0;
 862                         }
 863                 cookie_initialized = 1;
 864                 }
 865
 866         /* Read peer information */
 867         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 868
 869         /* Create buffer with peer's address and port */
 870         length = 0;
 871         switch (peer.sa.sa_family)
 872                 {
 873         case AF_INET:
 874                 length += sizeof(struct in_addr);
 875                 length += sizeof(peer.s4.sin_port);
 876                 break;
 877 #if OPENSSL_USE_IPV6
 878         case AF_INET6:
 879                 length += sizeof(struct in6_addr);
 880                 length += sizeof(peer.s6.sin6_port);
 881                 break;
 882 #endif
 883         default:
 884                 OPENSSL_assert(0);
 885                 break;
 886                 }
 887         buffer = OPENSSL_malloc(length);
 888
 889         if (buffer == NULL)
 890                 {
 891                 BIO_printf(bio_err,"out of memory\n");
 892                 return 0;
 893                 }
 894
 895         switch (peer.sa.sa_family)
 896                 {
 897         case AF_INET:
 898                 memcpy(buffer,
 899                        &peer.s4.sin_port,
 900                        sizeof(peer.s4.sin_port));
 901                 memcpy(buffer + sizeof(peer.s4.sin_port),
 902                        &peer.s4.sin_addr,
 903                        sizeof(struct in_addr));
 904                 break;
 905 #if OPENSSL_USE_IPV6
 906         case AF_INET6:
 907                 memcpy(buffer,
 908                        &peer.s6.sin6_port,
 909                        sizeof(peer.s6.sin6_port));
 910                 memcpy(buffer + sizeof(peer.s6.sin6_port),
 911                        &peer.s6.sin6_addr,
 912                        sizeof(struct in6_addr));
 913                 break;
 914 #endif
 915         default:
 916                 OPENSSL_assert(0);
 917                 break;
 918                 }
 919
 920         /* Calculate HMAC of buffer using the secret */
 921         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
 922              buffer, length, result, &resultlength);
 923         OPENSSL_free(buffer);
 924
 925         memcpy(cookie, result, resultlength);
 926         *cookie_len = resultlength;
 927
 928         return 1;
 929         }
 930
 931 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
 932         {
 933         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 934         unsigned int length, resultlength;
 935         union {
 936                 struct sockaddr sa;
 937                 struct sockaddr_in s4;
 938 #if OPENSSL_USE_IPV6
 939                 struct sockaddr_in6 s6;
 940 #endif
 941         } peer;
 942
 943         /* If secret isn't initialized yet, the cookie can't be valid */
 944         if (!cookie_initialized)
 945                 return 0;
 946
 947         /* Read peer information */
 948         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 949
 950         /* Create buffer with peer's address and port */
 951         length = 0;
 952         switch (peer.sa.sa_family)
 953                 {
 954         case AF_INET:
 955                 length += sizeof(struct in_addr);
 956                 length += sizeof(peer.s4.sin_port);
 957                 break;
 958 #if OPENSSL_USE_IPV6
 959         case AF_INET6:
 960                 length += sizeof(struct in6_addr);
 961                 length += sizeof(peer.s6.sin6_port);
 962                 break;
 963 #endif
 964         default:
 965                 OPENSSL_assert(0);
 966                 break;
 967                 }
 968         buffer = OPENSSL_malloc(length);
 969
 970         if (buffer == NULL)
 971                 {
 972                 BIO_printf(bio_err,"out of memory\n");
 973                 return 0;
 974                 }
 975
 976         switch (peer.sa.sa_family)
 977                 {
 978         case AF_INET:
 979                 memcpy(buffer,
 980                        &peer.s4.sin_port,
 981                        sizeof(peer.s4.sin_port));
 982                 memcpy(buffer + sizeof(peer.s4.sin_port),
 983                        &peer.s4.sin_addr,
 984                        sizeof(struct in_addr));
 985                 break;
 986 #if OPENSSL_USE_IPV6
 987         case AF_INET6:
 988                 memcpy(buffer,
 989                        &peer.s6.sin6_port,
 990                        sizeof(peer.s6.sin6_port));
 991                 memcpy(buffer + sizeof(peer.s6.sin6_port),
 992                        &peer.s6.sin6_addr,
 993                        sizeof(struct in6_addr));
 994                 break;
 995 #endif
 996         default:
 997                 OPENSSL_assert(0);
 998                 break;
 999                 }
1000
1001         /* Calculate HMAC of buffer using the secret */
1002         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1003              buffer, length, result, &resultlength);
1004         OPENSSL_free(buffer);
1005
1006         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1007                 return 1;
1008
1009         return 0;
1010         }