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;
 320         ncurves = SSL_get1_curvelist(s, NULL);
 321         if (ncurves <= 0)
 322                 return 1;
 323         curves = OPENSSL_malloc(ncurves * sizeof(int));
 324         SSL_get1_curvelist(s, curves);
 325
 326         BIO_puts(out, "Supported Elliptic Curves: ");
 327         for (i = 0; i < ncurves; i++)
 328                 {
 329                 int nid;
 330                 const char *cname;
 331                 if (i)
 332                         BIO_puts(out, ":");
 333                 nid = curves[i];
 334                 /* If unrecognised print out hex version */
 335                 if (nid & TLSEXT_nid_unknown)
 336                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 337                 else
 338                         {
 339                         /* Use NIST name for curve if it exists */
 340                         cname = EC_curve_nid2nist(nid);
 341                         if (!cname)
 342                                 cname = OBJ_nid2sn(nid);
 343                         BIO_printf(out, "%s", cname);
 344                         }
 345                 }
 346         BIO_puts(out, "\n");
 347         OPENSSL_free(curves);
 348         return 1;
 349         }
 350
 351
 352 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 353                                    int argi, long argl, long ret)
 354         {
 355         BIO *out;
 356
 357         out=(BIO *)BIO_get_callback_arg(bio);
 358         if (out == NULL) return(ret);
 359
 360         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 361                 {
 362                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 363                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 364                 BIO_dump(out,argp,(int)ret);
 365                 return(ret);
 366                 }
 367         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 368                 {
 369                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 370                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 371                 BIO_dump(out,argp,(int)ret);
 372                 }
 373         return(ret);
 374         }
 375
 376 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 377         {
 378         const char *str;
 379         int w;
 380
 381         w=where& ~SSL_ST_MASK;
 382
 383         if (w & SSL_ST_CONNECT) str="SSL_connect";
 384         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 385         else str="undefined";
 386
 387         if (where & SSL_CB_LOOP)
 388                 {
 389                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 390                 }
 391         else if (where & SSL_CB_ALERT)
 392                 {
 393                 str=(where & SSL_CB_READ)?"read":"write";
 394                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 395                         str,
 396                         SSL_alert_type_string_long(ret),
 397                         SSL_alert_desc_string_long(ret));
 398                 }
 399         else if (where & SSL_CB_EXIT)
 400                 {
 401                 if (ret == 0)
 402                         BIO_printf(bio_err,"%s:failed in %s\n",
 403                                 str,SSL_state_string_long(s));
 404                 else if (ret < 0)
 405                         {
 406                         BIO_printf(bio_err,"%s:error in %s\n",
 407                                 str,SSL_state_string_long(s));
 408                         }
 409                 }
 410         }
 411
 412
 413 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 414         {
 415         BIO *bio = arg;
 416         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 417
 418         str_write_p = write_p ? ">>>" : "<<<";
 419
 420         switch (version)
 421                 {
 422         case SSL2_VERSION:
 423                 str_version = "SSL 2.0";
 424                 break;
 425         case SSL3_VERSION:
 426                 str_version = "SSL 3.0 ";
 427                 break;
 428         case TLS1_VERSION:
 429                 str_version = "TLS 1.0 ";
 430                 break;
 431         case TLS1_1_VERSION:
 432                 str_version = "TLS 1.1 ";
 433                 break;
 434         case TLS1_2_VERSION:
 435                 str_version = "TLS 1.2 ";
 436                 break;
 437         case DTLS1_VERSION:
 438                 str_version = "DTLS 1.0 ";
 439                 break;
 440         case DTLS1_BAD_VER:
 441                 str_version = "DTLS 1.0 (bad) ";
 442                 break;
 443         default:
 444                 str_version = "???";
 445                 }
 446
 447         if (version == SSL2_VERSION)
 448                 {
 449                 str_details1 = "???";
 450
 451                 if (len > 0)
 452                         {
 453                         switch (((const unsigned char*)buf)[0])
 454                                 {
 455                                 case 0:
 456                                         str_details1 = ", ERROR:";
 457                                         str_details2 = " ???";
 458                                         if (len >= 3)
 459                                                 {
 460                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 461
 462                                                 switch (err)
 463                                                         {
 464                                                 case 0x0001:
 465                                                         str_details2 = " NO-CIPHER-ERROR";
 466                                                         break;
 467                                                 case 0x0002:
 468                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 469                                                         break;
 470                                                 case 0x0004:
 471                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 472                                                         break;
 473                                                 case 0x0006:
 474                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 475                                                         break;
 476                                                         }
 477                                                 }
 478
 479                                         break;
 480                                 case 1:
 481                                         str_details1 = ", CLIENT-HELLO";
 482                                         break;
 483                                 case 2:
 484                                         str_details1 = ", CLIENT-MASTER-KEY";
 485                                         break;
 486                                 case 3:
 487                                         str_details1 = ", CLIENT-FINISHED";
 488                                         break;
 489                                 case 4:
 490                                         str_details1 = ", SERVER-HELLO";
 491                                         break;
 492                                 case 5:
 493                                         str_details1 = ", SERVER-VERIFY";
 494                                         break;
 495                                 case 6:
 496                                         str_details1 = ", SERVER-FINISHED";
 497                                         break;
 498                                 case 7:
 499                                         str_details1 = ", REQUEST-CERTIFICATE";
 500                                         break;
 501                                 case 8:
 502                                         str_details1 = ", CLIENT-CERTIFICATE";
 503                                         break;
 504                                 }
 505                         }
 506                 }
 507
 508         if (version == SSL3_VERSION ||
 509             version == TLS1_VERSION ||
 510             version == DTLS1_VERSION ||
 511             version == DTLS1_BAD_VER)
 512                 {
 513                 switch (content_type)
 514                         {
 515                 case 20:
 516                         str_content_type = "ChangeCipherSpec";
 517                         break;
 518                 case 21:
 519                         str_content_type = "Alert";
 520                         break;
 521                 case 22:
 522                         str_content_type = "Handshake";
 523                         break;
 524                         }
 525
 526                 if (content_type == 21) /* Alert */
 527                         {
 528                         str_details1 = ", ???";
 529
 530                         if (len == 2)
 531                                 {
 532                                 switch (((const unsigned char*)buf)[0])
 533                                         {
 534                                 case 1:
 535                                         str_details1 = ", warning";
 536                                         break;
 537                                 case 2:
 538                                         str_details1 = ", fatal";
 539                                         break;
 540                                         }
 541
 542                                 str_details2 = " ???";
 543                                 switch (((const unsigned char*)buf)[1])
 544                                         {
 545                                 case 0:
 546                                         str_details2 = " close_notify";
 547                                         break;
 548                                 case 10:
 549                                         str_details2 = " unexpected_message";
 550                                         break;
 551                                 case 20:
 552                                         str_details2 = " bad_record_mac";
 553                                         break;
 554                                 case 21:
 555                                         str_details2 = " decryption_failed";
 556                                         break;
 557                                 case 22:
 558                                         str_details2 = " record_overflow";
 559                                         break;
 560                                 case 30:
 561                                         str_details2 = " decompression_failure";
 562                                         break;
 563                                 case 40:
 564                                         str_details2 = " handshake_failure";
 565                                         break;
 566                                 case 42:
 567                                         str_details2 = " bad_certificate";
 568                                         break;
 569                                 case 43:
 570                                         str_details2 = " unsupported_certificate";
 571                                         break;
 572                                 case 44:
 573                                         str_details2 = " certificate_revoked";
 574                                         break;
 575                                 case 45:
 576                                         str_details2 = " certificate_expired";
 577                                         break;
 578                                 case 46:
 579                                         str_details2 = " certificate_unknown";
 580                                         break;
 581                                 case 47:
 582                                         str_details2 = " illegal_parameter";
 583                                         break;
 584                                 case 48:
 585                                         str_details2 = " unknown_ca";
 586                                         break;
 587                                 case 49:
 588                                         str_details2 = " access_denied";
 589                                         break;
 590                                 case 50:
 591                                         str_details2 = " decode_error";
 592                                         break;
 593                                 case 51:
 594                                         str_details2 = " decrypt_error";
 595                                         break;
 596                                 case 60:
 597                                         str_details2 = " export_restriction";
 598                                         break;
 599                                 case 70:
 600                                         str_details2 = " protocol_version";
 601                                         break;
 602                                 case 71:
 603                                         str_details2 = " insufficient_security";
 604                                         break;
 605                                 case 80:
 606                                         str_details2 = " internal_error";
 607                                         break;
 608                                 case 90:
 609                                         str_details2 = " user_canceled";
 610                                         break;
 611                                 case 100:
 612                                         str_details2 = " no_renegotiation";
 613                                         break;
 614                                 case 110:
 615                                         str_details2 = " unsupported_extension";
 616                                         break;
 617                                 case 111:
 618                                         str_details2 = " certificate_unobtainable";
 619                                         break;
 620                                 case 112:
 621                                         str_details2 = " unrecognized_name";
 622                                         break;
 623                                 case 113:
 624                                         str_details2 = " bad_certificate_status_response";
 625                                         break;
 626                                 case 114:
 627                                         str_details2 = " bad_certificate_hash_value";
 628                                         break;
 629                                 case 115:
 630                                         str_details2 = " unknown_psk_identity";
 631                                         break;
 632                                         }
 633                                 }
 634                         }
 635
 636                 if (content_type == 22) /* Handshake */
 637                         {
 638                         str_details1 = "???";
 639
 640                         if (len > 0)
 641                                 {
 642                                 switch (((const unsigned char*)buf)[0])
 643                                         {
 644                                 case 0:
 645                                         str_details1 = ", HelloRequest";
 646                                         break;
 647                                 case 1:
 648                                         str_details1 = ", ClientHello";
 649                                         break;
 650                                 case 2:
 651                                         str_details1 = ", ServerHello";
 652                                         break;
 653                                 case 3:
 654                                         str_details1 = ", HelloVerifyRequest";
 655                                         break;
 656                                 case 11:
 657                                         str_details1 = ", Certificate";
 658                                         break;
 659                                 case 12:
 660                                         str_details1 = ", ServerKeyExchange";
 661                                         break;
 662                                 case 13:
 663                                         str_details1 = ", CertificateRequest";
 664                                         break;
 665                                 case 14:
 666                                         str_details1 = ", ServerHelloDone";
 667                                         break;
 668                                 case 15:
 669                                         str_details1 = ", CertificateVerify";
 670                                         break;
 671                                 case 16:
 672                                         str_details1 = ", ClientKeyExchange";
 673                                         break;
 674                                 case 20:
 675                                         str_details1 = ", Finished";
 676                                         break;
 677                                         }
 678                                 }
 679                         }
 680
 681 #ifndef OPENSSL_NO_HEARTBEATS
 682                 if (content_type == 24) /* Heartbeat */
 683                         {
 684                         str_details1 = ", Heartbeat";
 685
 686                         if (len > 0)
 687                                 {
 688                                 switch (((const unsigned char*)buf)[0])
 689                                         {
 690                                 case 1:
 691                                         str_details1 = ", HeartbeatRequest";
 692                                         break;
 693                                 case 2:
 694                                         str_details1 = ", HeartbeatResponse";
 695                                         break;
 696                                         }
 697                                 }
 698                         }
 699 #endif
 700                 }
 701
 702         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);
 703
 704         if (len > 0)
 705                 {
 706                 size_t num, i;
 707
 708                 BIO_printf(bio, "   ");
 709                 num = len;
 710 #if 0
 711                 if (num > 16)
 712                         num = 16;
 713 #endif
 714                 for (i = 0; i < num; i++)
 715                         {
 716                         if (i % 16 == 0 && i > 0)
 717                                 BIO_printf(bio, "\n   ");
 718                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 719                         }
 720                 if (i < len)
 721                         BIO_printf(bio, " ...");
 722                 BIO_printf(bio, "\n");
 723                 }
 724         (void)BIO_flush(bio);
 725         }
 726
 727 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 728                                         unsigned char *data, int len,
 729                                         void *arg)
 730         {
 731         BIO *bio = arg;
 732         char *extname;
 733
 734         switch(type)
 735                 {
 736                 case TLSEXT_TYPE_server_name:
 737                 extname = "server name";
 738                 break;
 739
 740                 case TLSEXT_TYPE_max_fragment_length:
 741                 extname = "max fragment length";
 742                 break;
 743
 744                 case TLSEXT_TYPE_client_certificate_url:
 745                 extname = "client certificate URL";
 746                 break;
 747
 748                 case TLSEXT_TYPE_trusted_ca_keys:
 749                 extname = "trusted CA keys";
 750                 break;
 751
 752                 case TLSEXT_TYPE_truncated_hmac:
 753                 extname = "truncated HMAC";
 754                 break;
 755
 756                 case TLSEXT_TYPE_status_request:
 757                 extname = "status request";
 758                 break;
 759
 760                 case TLSEXT_TYPE_user_mapping:
 761                 extname = "user mapping";
 762                 break;
 763
 764                 case TLSEXT_TYPE_client_authz:
 765                 extname = "client authz";
 766                 break;
 767
 768                 case TLSEXT_TYPE_server_authz:
 769                 extname = "server authz";
 770                 break;
 771
 772                 case TLSEXT_TYPE_cert_type:
 773                 extname = "cert type";
 774                 break;
 775
 776                 case TLSEXT_TYPE_elliptic_curves:
 777                 extname = "elliptic curves";
 778                 break;
 779
 780                 case TLSEXT_TYPE_ec_point_formats:
 781                 extname = "EC point formats";
 782                 break;
 783
 784                 case TLSEXT_TYPE_srp:
 785                 extname = "SRP";
 786                 break;
 787
 788                 case TLSEXT_TYPE_signature_algorithms:
 789                 extname = "signature algorithms";
 790                 break;
 791
 792                 case TLSEXT_TYPE_use_srtp:
 793                 extname = "use SRTP";
 794                 break;
 795
 796                 case TLSEXT_TYPE_heartbeat:
 797                 extname = "heartbeat";
 798                 break;
 799
 800                 case TLSEXT_TYPE_session_ticket:
 801                 extname = "session ticket";
 802                 break;
 803
 804                 case TLSEXT_TYPE_renegotiate:
 805                 extname = "renegotiation info";
 806                 break;
 807
 808 #ifdef TLSEXT_TYPE_opaque_prf_input
 809                 case TLSEXT_TYPE_opaque_prf_input:
 810                 extname = "opaque PRF input";
 811                 break;
 812 #endif
 813 #ifdef TLSEXT_TYPE_next_proto_neg
 814                 case TLSEXT_TYPE_next_proto_neg:
 815                 extname = "next protocol";
 816                 break;
 817 #endif
 818
 819                 default:
 820                 extname = "unknown";
 821                 break;
 822
 823                 }
 824
 825         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
 826                         client_server ? "server": "client",
 827                         extname, type, len);
 828         BIO_dump(bio, (char *)data, len);
 829         (void)BIO_flush(bio);
 830         }
 831
 832 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
 833         {
 834         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 835         unsigned int length, resultlength;
 836         union {
 837                 struct sockaddr sa;
 838                 struct sockaddr_in s4;
 839 #if OPENSSL_USE_IPV6
 840                 struct sockaddr_in6 s6;
 841 #endif
 842         } peer;
 843
 844         /* Initialize a random secret */
 845         if (!cookie_initialized)
 846                 {
 847                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
 848                         {
 849                         BIO_printf(bio_err,"error setting random cookie secret\n");
 850                         return 0;
 851                         }
 852                 cookie_initialized = 1;
 853                 }
 854
 855         /* Read peer information */
 856         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 857
 858         /* Create buffer with peer's address and port */
 859         length = 0;
 860         switch (peer.sa.sa_family)
 861                 {
 862         case AF_INET:
 863                 length += sizeof(struct in_addr);
 864                 length += sizeof(peer.s4.sin_port);
 865                 break;
 866 #if OPENSSL_USE_IPV6
 867         case AF_INET6:
 868                 length += sizeof(struct in6_addr);
 869                 length += sizeof(peer.s6.sin6_port);
 870                 break;
 871 #endif
 872         default:
 873                 OPENSSL_assert(0);
 874                 break;
 875                 }
 876         buffer = OPENSSL_malloc(length);
 877
 878         if (buffer == NULL)
 879                 {
 880                 BIO_printf(bio_err,"out of memory\n");
 881                 return 0;
 882                 }
 883
 884         switch (peer.sa.sa_family)
 885                 {
 886         case AF_INET:
 887                 memcpy(buffer,
 888                        &peer.s4.sin_port,
 889                        sizeof(peer.s4.sin_port));
 890                 memcpy(buffer + sizeof(peer.s4.sin_port),
 891                        &peer.s4.sin_addr,
 892                        sizeof(struct in_addr));
 893                 break;
 894 #if OPENSSL_USE_IPV6
 895         case AF_INET6:
 896                 memcpy(buffer,
 897                        &peer.s6.sin6_port,
 898                        sizeof(peer.s6.sin6_port));
 899                 memcpy(buffer + sizeof(peer.s6.sin6_port),
 900                        &peer.s6.sin6_addr,
 901                        sizeof(struct in6_addr));
 902                 break;
 903 #endif
 904         default:
 905                 OPENSSL_assert(0);
 906                 break;
 907                 }
 908
 909         /* Calculate HMAC of buffer using the secret */
 910         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
 911              buffer, length, result, &resultlength);
 912         OPENSSL_free(buffer);
 913
 914         memcpy(cookie, result, resultlength);
 915         *cookie_len = resultlength;
 916
 917         return 1;
 918         }
 919
 920 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
 921         {
 922         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 923         unsigned int length, resultlength;
 924         union {
 925                 struct sockaddr sa;
 926                 struct sockaddr_in s4;
 927 #if OPENSSL_USE_IPV6
 928                 struct sockaddr_in6 s6;
 929 #endif
 930         } peer;
 931
 932         /* If secret isn't initialized yet, the cookie can't be valid */
 933         if (!cookie_initialized)
 934                 return 0;
 935
 936         /* Read peer information */
 937         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 938
 939         /* Create buffer with peer's address and port */
 940         length = 0;
 941         switch (peer.sa.sa_family)
 942                 {
 943         case AF_INET:
 944                 length += sizeof(struct in_addr);
 945                 length += sizeof(peer.s4.sin_port);
 946                 break;
 947 #if OPENSSL_USE_IPV6
 948         case AF_INET6:
 949                 length += sizeof(struct in6_addr);
 950                 length += sizeof(peer.s6.sin6_port);
 951                 break;
 952 #endif
 953         default:
 954                 OPENSSL_assert(0);
 955                 break;
 956                 }
 957         buffer = OPENSSL_malloc(length);
 958
 959         if (buffer == NULL)
 960                 {
 961                 BIO_printf(bio_err,"out of memory\n");
 962                 return 0;
 963                 }
 964
 965         switch (peer.sa.sa_family)
 966                 {
 967         case AF_INET:
 968                 memcpy(buffer,
 969                        &peer.s4.sin_port,
 970                        sizeof(peer.s4.sin_port));
 971                 memcpy(buffer + sizeof(peer.s4.sin_port),
 972                        &peer.s4.sin_addr,
 973                        sizeof(struct in_addr));
 974                 break;
 975 #if OPENSSL_USE_IPV6
 976         case AF_INET6:
 977                 memcpy(buffer,
 978                        &peer.s6.sin6_port,
 979                        sizeof(peer.s6.sin6_port));
 980                 memcpy(buffer + sizeof(peer.s6.sin6_port),
 981                        &peer.s6.sin6_addr,
 982                        sizeof(struct in6_addr));
 983                 break;
 984 #endif
 985         default:
 986                 OPENSSL_assert(0);
 987                 break;
 988                 }
 989
 990         /* Calculate HMAC of buffer using the secret */
 991         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
 992              buffer, length, result, &resultlength);
 993         OPENSSL_free(buffer);
 994
 995         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
 996                 return 1;
 997
 998         return 0;
 999         }