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                                                         STACK_OF(X509) *chain)
 255         {
 256         if (cert ==  NULL)
 257                 return 1;
 258         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
 259                 {
 260                 BIO_printf(bio_err,"error setting certificate\n");
 261                 ERR_print_errors(bio_err);
 262                 return 0;
 263                 }
 264         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
 265                 {
 266                 BIO_printf(bio_err,"error setting private key\n");
 267                 ERR_print_errors(bio_err);
 268                 return 0;
 269                 }
 270
 271
 272                 /* Now we know that a key and cert have been set against
 273                  * the SSL context */
 274         if (!SSL_CTX_check_private_key(ctx))
 275                 {
 276                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 277                 return 0;
 278                 }
 279         if (chain && !SSL_CTX_set1_chain(ctx, chain))
 280                 {
 281                 BIO_printf(bio_err,"error setting certificate chain\n");
 282                 ERR_print_errors(bio_err);
 283                 return 0;
 284                 }
 285         return 1;
 286         }
 287
 288 typedef struct
 289         {
 290         X509 *cert;
 291         EVP_PKEY *key;
 292         STACK_OF(X509) *chain;
 293         struct ssl_excert_st *next;
 294         } SSL_EXCERT;
 295
 296 static int set_cert_cb(SSL *ssl, void *arg)
 297         {
 298         return 1;
 299         }
 300
 301 int ssl_print_sigalgs(BIO *out, SSL *s)
 302         {
 303         int i, nsig;
 304         nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 305         if (nsig == 0)
 306                 return 1;
 307
 308         BIO_puts(out, "Signature Algorithms: ");
 309         for (i = 0; i < nsig; i++)
 310                 {
 311                 int hash_nid, sign_nid;
 312                 unsigned char rhash, rsign;
 313                 const char *sstr = NULL;
 314                 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 315                                                         &rsign, &rhash);
 316                 if (i)
 317                         BIO_puts(out, ":");
 318                 if (sign_nid == EVP_PKEY_RSA)
 319                         sstr = "RSA";
 320                 else if(sign_nid == EVP_PKEY_DSA)
 321                         sstr = "DSA";
 322                 else if(sign_nid == EVP_PKEY_EC)
 323                         sstr = "ECDSA";
 324                 if (sstr)
 325                         BIO_printf(out,"%s+", sstr);
 326                 else
 327                         BIO_printf(out,"0x%02X+", (int)rsign);
 328                 if (hash_nid != NID_undef)
 329                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
 330                 else
 331                         BIO_printf(out,"0x%02X", (int)rhash);
 332                 }
 333         BIO_puts(out, "\n");
 334         return 1;
 335         }
 336
 337 int ssl_print_curves(BIO *out, SSL *s)
 338         {
 339         int i, ncurves, *curves, nid;
 340         const char *cname;
 341         ncurves = SSL_get1_curves(s, NULL);
 342         if (ncurves <= 0)
 343                 return 1;
 344         curves = OPENSSL_malloc(ncurves * sizeof(int));
 345         SSL_get1_curves(s, curves);
 346
 347         BIO_puts(out, "Supported Elliptic Curves: ");
 348         for (i = 0; i < ncurves; i++)
 349                 {
 350                 if (i)
 351                         BIO_puts(out, ":");
 352                 nid = curves[i];
 353                 /* If unrecognised print out hex version */
 354                 if (nid & TLSEXT_nid_unknown)
 355                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 356                 else
 357                         {
 358                         /* Use NIST name for curve if it exists */
 359                         cname = EC_curve_nid2nist(nid);
 360                         if (!cname)
 361                                 cname = OBJ_nid2sn(nid);
 362                         BIO_printf(out, "%s", cname);
 363                         }
 364                 }
 365         BIO_puts(out, "\nShared Elliptic curves: ");
 366         OPENSSL_free(curves);
 367         ncurves = SSL_get_shared_curve(s, -1);
 368         for (i = 0; i < ncurves; i++)
 369                 {
 370                 if (i)
 371                         BIO_puts(out, ":");
 372                 nid = SSL_get_shared_curve(s, i);
 373                 cname = EC_curve_nid2nist(nid);
 374                 if (!cname)
 375                         cname = OBJ_nid2sn(nid);
 376                 BIO_printf(out, "%s", cname);
 377                 }
 378         if (ncurves == 0)
 379                 BIO_puts(out, "NONE");
 380         BIO_puts(out, "\n");
 381         return 1;
 382         }
 383
 384
 385 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 386                                    int argi, long argl, long ret)
 387         {
 388         BIO *out;
 389
 390         out=(BIO *)BIO_get_callback_arg(bio);
 391         if (out == NULL) return(ret);
 392
 393         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 394                 {
 395                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 396                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 397                 BIO_dump(out,argp,(int)ret);
 398                 return(ret);
 399                 }
 400         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 401                 {
 402                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 403                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 404                 BIO_dump(out,argp,(int)ret);
 405                 }
 406         return(ret);
 407         }
 408
 409 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 410         {
 411         const char *str;
 412         int w;
 413
 414         w=where& ~SSL_ST_MASK;
 415
 416         if (w & SSL_ST_CONNECT) str="SSL_connect";
 417         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 418         else str="undefined";
 419
 420         if (where & SSL_CB_LOOP)
 421                 {
 422                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 423                 }
 424         else if (where & SSL_CB_ALERT)
 425                 {
 426                 str=(where & SSL_CB_READ)?"read":"write";
 427                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 428                         str,
 429                         SSL_alert_type_string_long(ret),
 430                         SSL_alert_desc_string_long(ret));
 431                 }
 432         else if (where & SSL_CB_EXIT)
 433                 {
 434                 if (ret == 0)
 435                         BIO_printf(bio_err,"%s:failed in %s\n",
 436                                 str,SSL_state_string_long(s));
 437                 else if (ret < 0)
 438                         {
 439                         BIO_printf(bio_err,"%s:error in %s\n",
 440                                 str,SSL_state_string_long(s));
 441                         }
 442                 }
 443         }
 444
 445
 446 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 447         {
 448         BIO *bio = arg;
 449         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 450
 451         str_write_p = write_p ? ">>>" : "<<<";
 452
 453         switch (version)
 454                 {
 455         case SSL2_VERSION:
 456                 str_version = "SSL 2.0";
 457                 break;
 458         case SSL3_VERSION:
 459                 str_version = "SSL 3.0 ";
 460                 break;
 461         case TLS1_VERSION:
 462                 str_version = "TLS 1.0 ";
 463                 break;
 464         case TLS1_1_VERSION:
 465                 str_version = "TLS 1.1 ";
 466                 break;
 467         case TLS1_2_VERSION:
 468                 str_version = "TLS 1.2 ";
 469                 break;
 470         case DTLS1_VERSION:
 471                 str_version = "DTLS 1.0 ";
 472                 break;
 473         case DTLS1_BAD_VER:
 474                 str_version = "DTLS 1.0 (bad) ";
 475                 break;
 476         default:
 477                 str_version = "???";
 478                 }
 479
 480         if (version == SSL2_VERSION)
 481                 {
 482                 str_details1 = "???";
 483
 484                 if (len > 0)
 485                         {
 486                         switch (((const unsigned char*)buf)[0])
 487                                 {
 488                                 case 0:
 489                                         str_details1 = ", ERROR:";
 490                                         str_details2 = " ???";
 491                                         if (len >= 3)
 492                                                 {
 493                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 494
 495                                                 switch (err)
 496                                                         {
 497                                                 case 0x0001:
 498                                                         str_details2 = " NO-CIPHER-ERROR";
 499                                                         break;
 500                                                 case 0x0002:
 501                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 502                                                         break;
 503                                                 case 0x0004:
 504                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 505                                                         break;
 506                                                 case 0x0006:
 507                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 508                                                         break;
 509                                                         }
 510                                                 }
 511
 512                                         break;
 513                                 case 1:
 514                                         str_details1 = ", CLIENT-HELLO";
 515                                         break;
 516                                 case 2:
 517                                         str_details1 = ", CLIENT-MASTER-KEY";
 518                                         break;
 519                                 case 3:
 520                                         str_details1 = ", CLIENT-FINISHED";
 521                                         break;
 522                                 case 4:
 523                                         str_details1 = ", SERVER-HELLO";
 524                                         break;
 525                                 case 5:
 526                                         str_details1 = ", SERVER-VERIFY";
 527                                         break;
 528                                 case 6:
 529                                         str_details1 = ", SERVER-FINISHED";
 530                                         break;
 531                                 case 7:
 532                                         str_details1 = ", REQUEST-CERTIFICATE";
 533                                         break;
 534                                 case 8:
 535                                         str_details1 = ", CLIENT-CERTIFICATE";
 536                                         break;
 537                                 }
 538                         }
 539                 }
 540
 541         if (version == SSL3_VERSION ||
 542             version == TLS1_VERSION ||
 543             version == DTLS1_VERSION ||
 544             version == DTLS1_BAD_VER)
 545                 {
 546                 switch (content_type)
 547                         {
 548                 case 20:
 549                         str_content_type = "ChangeCipherSpec";
 550                         break;
 551                 case 21:
 552                         str_content_type = "Alert";
 553                         break;
 554                 case 22:
 555                         str_content_type = "Handshake";
 556                         break;
 557                         }
 558
 559                 if (content_type == 21) /* Alert */
 560                         {
 561                         str_details1 = ", ???";
 562
 563                         if (len == 2)
 564                                 {
 565                                 switch (((const unsigned char*)buf)[0])
 566                                         {
 567                                 case 1:
 568                                         str_details1 = ", warning";
 569                                         break;
 570                                 case 2:
 571                                         str_details1 = ", fatal";
 572                                         break;
 573                                         }
 574
 575                                 str_details2 = " ???";
 576                                 switch (((const unsigned char*)buf)[1])
 577                                         {
 578                                 case 0:
 579                                         str_details2 = " close_notify";
 580                                         break;
 581                                 case 10:
 582                                         str_details2 = " unexpected_message";
 583                                         break;
 584                                 case 20:
 585                                         str_details2 = " bad_record_mac";
 586                                         break;
 587                                 case 21:
 588                                         str_details2 = " decryption_failed";
 589                                         break;
 590                                 case 22:
 591                                         str_details2 = " record_overflow";
 592                                         break;
 593                                 case 30:
 594                                         str_details2 = " decompression_failure";
 595                                         break;
 596                                 case 40:
 597                                         str_details2 = " handshake_failure";
 598                                         break;
 599                                 case 42:
 600                                         str_details2 = " bad_certificate";
 601                                         break;
 602                                 case 43:
 603                                         str_details2 = " unsupported_certificate";
 604                                         break;
 605                                 case 44:
 606                                         str_details2 = " certificate_revoked";
 607                                         break;
 608                                 case 45:
 609                                         str_details2 = " certificate_expired";
 610                                         break;
 611                                 case 46:
 612                                         str_details2 = " certificate_unknown";
 613                                         break;
 614                                 case 47:
 615                                         str_details2 = " illegal_parameter";
 616                                         break;
 617                                 case 48:
 618                                         str_details2 = " unknown_ca";
 619                                         break;
 620                                 case 49:
 621                                         str_details2 = " access_denied";
 622                                         break;
 623                                 case 50:
 624                                         str_details2 = " decode_error";
 625                                         break;
 626                                 case 51:
 627                                         str_details2 = " decrypt_error";
 628                                         break;
 629                                 case 60:
 630                                         str_details2 = " export_restriction";
 631                                         break;
 632                                 case 70:
 633                                         str_details2 = " protocol_version";
 634                                         break;
 635                                 case 71:
 636                                         str_details2 = " insufficient_security";
 637                                         break;
 638                                 case 80:
 639                                         str_details2 = " internal_error";
 640                                         break;
 641                                 case 90:
 642                                         str_details2 = " user_canceled";
 643                                         break;
 644                                 case 100:
 645                                         str_details2 = " no_renegotiation";
 646                                         break;
 647                                 case 110:
 648                                         str_details2 = " unsupported_extension";
 649                                         break;
 650                                 case 111:
 651                                         str_details2 = " certificate_unobtainable";
 652                                         break;
 653                                 case 112:
 654                                         str_details2 = " unrecognized_name";
 655                                         break;
 656                                 case 113:
 657                                         str_details2 = " bad_certificate_status_response";
 658                                         break;
 659                                 case 114:
 660                                         str_details2 = " bad_certificate_hash_value";
 661                                         break;
 662                                 case 115:
 663                                         str_details2 = " unknown_psk_identity";
 664                                         break;
 665                                         }
 666                                 }
 667                         }
 668
 669                 if (content_type == 22) /* Handshake */
 670                         {
 671                         str_details1 = "???";
 672
 673                         if (len > 0)
 674                                 {
 675                                 switch (((const unsigned char*)buf)[0])
 676                                         {
 677                                 case 0:
 678                                         str_details1 = ", HelloRequest";
 679                                         break;
 680                                 case 1:
 681                                         str_details1 = ", ClientHello";
 682                                         break;
 683                                 case 2:
 684                                         str_details1 = ", ServerHello";
 685                                         break;
 686                                 case 3:
 687                                         str_details1 = ", HelloVerifyRequest";
 688                                         break;
 689                                 case 11:
 690                                         str_details1 = ", Certificate";
 691                                         break;
 692                                 case 12:
 693                                         str_details1 = ", ServerKeyExchange";
 694                                         break;
 695                                 case 13:
 696                                         str_details1 = ", CertificateRequest";
 697                                         break;
 698                                 case 14:
 699                                         str_details1 = ", ServerHelloDone";
 700                                         break;
 701                                 case 15:
 702                                         str_details1 = ", CertificateVerify";
 703                                         break;
 704                                 case 16:
 705                                         str_details1 = ", ClientKeyExchange";
 706                                         break;
 707                                 case 20:
 708                                         str_details1 = ", Finished";
 709                                         break;
 710                                         }
 711                                 }
 712                         }
 713
 714 #ifndef OPENSSL_NO_HEARTBEATS
 715                 if (content_type == 24) /* Heartbeat */
 716                         {
 717                         str_details1 = ", Heartbeat";
 718
 719                         if (len > 0)
 720                                 {
 721                                 switch (((const unsigned char*)buf)[0])
 722                                         {
 723                                 case 1:
 724                                         str_details1 = ", HeartbeatRequest";
 725                                         break;
 726                                 case 2:
 727                                         str_details1 = ", HeartbeatResponse";
 728                                         break;
 729                                         }
 730                                 }
 731                         }
 732 #endif
 733                 }
 734
 735         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);
 736
 737         if (len > 0)
 738                 {
 739                 size_t num, i;
 740
 741                 BIO_printf(bio, "   ");
 742                 num = len;
 743 #if 0
 744                 if (num > 16)
 745                         num = 16;
 746 #endif
 747                 for (i = 0; i < num; i++)
 748                         {
 749                         if (i % 16 == 0 && i > 0)
 750                                 BIO_printf(bio, "\n   ");
 751                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 752                         }
 753                 if (i < len)
 754                         BIO_printf(bio, " ...");
 755                 BIO_printf(bio, "\n");
 756                 }
 757         (void)BIO_flush(bio);
 758         }
 759
 760 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 761                                         unsigned char *data, int len,
 762                                         void *arg)
 763         {
 764         BIO *bio = arg;
 765         char *extname;
 766
 767         switch(type)
 768                 {
 769                 case TLSEXT_TYPE_server_name:
 770                 extname = "server name";
 771                 break;
 772
 773                 case TLSEXT_TYPE_max_fragment_length:
 774                 extname = "max fragment length";
 775                 break;
 776
 777                 case TLSEXT_TYPE_client_certificate_url:
 778                 extname = "client certificate URL";
 779                 break;
 780
 781                 case TLSEXT_TYPE_trusted_ca_keys:
 782                 extname = "trusted CA keys";
 783                 break;
 784
 785                 case TLSEXT_TYPE_truncated_hmac:
 786                 extname = "truncated HMAC";
 787                 break;
 788
 789                 case TLSEXT_TYPE_status_request:
 790                 extname = "status request";
 791                 break;
 792
 793                 case TLSEXT_TYPE_user_mapping:
 794                 extname = "user mapping";
 795                 break;
 796
 797                 case TLSEXT_TYPE_client_authz:
 798                 extname = "client authz";
 799                 break;
 800
 801                 case TLSEXT_TYPE_server_authz:
 802                 extname = "server authz";
 803                 break;
 804
 805                 case TLSEXT_TYPE_cert_type:
 806                 extname = "cert type";
 807                 break;
 808
 809                 case TLSEXT_TYPE_elliptic_curves:
 810                 extname = "elliptic curves";
 811                 break;
 812
 813                 case TLSEXT_TYPE_ec_point_formats:
 814                 extname = "EC point formats";
 815                 break;
 816
 817                 case TLSEXT_TYPE_srp:
 818                 extname = "SRP";
 819                 break;
 820
 821                 case TLSEXT_TYPE_signature_algorithms:
 822                 extname = "signature algorithms";
 823                 break;
 824
 825                 case TLSEXT_TYPE_use_srtp:
 826                 extname = "use SRTP";
 827                 break;
 828
 829                 case TLSEXT_TYPE_heartbeat:
 830                 extname = "heartbeat";
 831                 break;
 832
 833                 case TLSEXT_TYPE_session_ticket:
 834                 extname = "session ticket";
 835                 break;
 836
 837                 case TLSEXT_TYPE_renegotiate:
 838                 extname = "renegotiation info";
 839                 break;
 840
 841 #ifdef TLSEXT_TYPE_opaque_prf_input
 842                 case TLSEXT_TYPE_opaque_prf_input:
 843                 extname = "opaque PRF input";
 844                 break;
 845 #endif
 846 #ifdef TLSEXT_TYPE_next_proto_neg
 847                 case TLSEXT_TYPE_next_proto_neg:
 848                 extname = "next protocol";
 849                 break;
 850 #endif
 851
 852                 default:
 853                 extname = "unknown";
 854                 break;
 855
 856                 }
 857
 858         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
 859                         client_server ? "server": "client",
 860                         extname, type, len);
 861         BIO_dump(bio, (char *)data, len);
 862         (void)BIO_flush(bio);
 863         }
 864
 865 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
 866         {
 867         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 868         unsigned int length, resultlength;
 869         union {
 870                 struct sockaddr sa;
 871                 struct sockaddr_in s4;
 872 #if OPENSSL_USE_IPV6
 873                 struct sockaddr_in6 s6;
 874 #endif
 875         } peer;
 876
 877         /* Initialize a random secret */
 878         if (!cookie_initialized)
 879                 {
 880                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
 881                         {
 882                         BIO_printf(bio_err,"error setting random cookie secret\n");
 883                         return 0;
 884                         }
 885                 cookie_initialized = 1;
 886                 }
 887
 888         /* Read peer information */
 889         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 890
 891         /* Create buffer with peer's address and port */
 892         length = 0;
 893         switch (peer.sa.sa_family)
 894                 {
 895         case AF_INET:
 896                 length += sizeof(struct in_addr);
 897                 length += sizeof(peer.s4.sin_port);
 898                 break;
 899 #if OPENSSL_USE_IPV6
 900         case AF_INET6:
 901                 length += sizeof(struct in6_addr);
 902                 length += sizeof(peer.s6.sin6_port);
 903                 break;
 904 #endif
 905         default:
 906                 OPENSSL_assert(0);
 907                 break;
 908                 }
 909         buffer = OPENSSL_malloc(length);
 910
 911         if (buffer == NULL)
 912                 {
 913                 BIO_printf(bio_err,"out of memory\n");
 914                 return 0;
 915                 }
 916
 917         switch (peer.sa.sa_family)
 918                 {
 919         case AF_INET:
 920                 memcpy(buffer,
 921                        &peer.s4.sin_port,
 922                        sizeof(peer.s4.sin_port));
 923                 memcpy(buffer + sizeof(peer.s4.sin_port),
 924                        &peer.s4.sin_addr,
 925                        sizeof(struct in_addr));
 926                 break;
 927 #if OPENSSL_USE_IPV6
 928         case AF_INET6:
 929                 memcpy(buffer,
 930                        &peer.s6.sin6_port,
 931                        sizeof(peer.s6.sin6_port));
 932                 memcpy(buffer + sizeof(peer.s6.sin6_port),
 933                        &peer.s6.sin6_addr,
 934                        sizeof(struct in6_addr));
 935                 break;
 936 #endif
 937         default:
 938                 OPENSSL_assert(0);
 939                 break;
 940                 }
 941
 942         /* Calculate HMAC of buffer using the secret */
 943         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
 944              buffer, length, result, &resultlength);
 945         OPENSSL_free(buffer);
 946
 947         memcpy(cookie, result, resultlength);
 948         *cookie_len = resultlength;
 949
 950         return 1;
 951         }
 952
 953 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
 954         {
 955         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 956         unsigned int length, resultlength;
 957         union {
 958                 struct sockaddr sa;
 959                 struct sockaddr_in s4;
 960 #if OPENSSL_USE_IPV6
 961                 struct sockaddr_in6 s6;
 962 #endif
 963         } peer;
 964
 965         /* If secret isn't initialized yet, the cookie can't be valid */
 966         if (!cookie_initialized)
 967                 return 0;
 968
 969         /* Read peer information */
 970         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 971
 972         /* Create buffer with peer's address and port */
 973         length = 0;
 974         switch (peer.sa.sa_family)
 975                 {
 976         case AF_INET:
 977                 length += sizeof(struct in_addr);
 978                 length += sizeof(peer.s4.sin_port);
 979                 break;
 980 #if OPENSSL_USE_IPV6
 981         case AF_INET6:
 982                 length += sizeof(struct in6_addr);
 983                 length += sizeof(peer.s6.sin6_port);
 984                 break;
 985 #endif
 986         default:
 987                 OPENSSL_assert(0);
 988                 break;
 989                 }
 990         buffer = OPENSSL_malloc(length);
 991
 992         if (buffer == NULL)
 993                 {
 994                 BIO_printf(bio_err,"out of memory\n");
 995                 return 0;
 996                 }
 997
 998         switch (peer.sa.sa_family)
 999                 {
1000         case AF_INET:
1001                 memcpy(buffer,
1002                        &peer.s4.sin_port,
1003                        sizeof(peer.s4.sin_port));
1004                 memcpy(buffer + sizeof(peer.s4.sin_port),
1005                        &peer.s4.sin_addr,
1006                        sizeof(struct in_addr));
1007                 break;
1008 #if OPENSSL_USE_IPV6
1009         case AF_INET6:
1010                 memcpy(buffer,
1011                        &peer.s6.sin6_port,
1012                        sizeof(peer.s6.sin6_port));
1013                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1014                        &peer.s6.sin6_addr,
1015                        sizeof(struct in6_addr));
1016                 break;
1017 #endif
1018         default:
1019                 OPENSSL_assert(0);
1020                 break;
1021                 }
1022
1023         /* Calculate HMAC of buffer using the secret */
1024         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1025              buffer, length, result, &resultlength);
1026         OPENSSL_free(buffer);
1027
1028         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1029                 return 1;
1030
1031         return 0;
1032         }