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
 265         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
 266                 {
 267                 BIO_printf(bio_err,"error setting private key\n");
 268                 ERR_print_errors(bio_err);
 269                 return 0;
 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 static int do_print_sigalgs(BIO *out, SSL *s, int client, int shared)
 289         {
 290         int i, nsig;
 291         if (shared)
 292                 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
 293                                                         NULL, NULL);
 294         else
 295                 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 296         if (nsig == 0)
 297                 return 1;
 298
 299         if (shared)
 300                 BIO_puts(out, "Shared ");
 301
 302         if (client)
 303                 BIO_puts(out, "Requested ");
 304         BIO_puts(out, "Signature Algorithms: ");
 305         for (i = 0; i < nsig; i++)
 306                 {
 307                 int hash_nid, sign_nid;
 308                 unsigned char rhash, rsign;
 309                 const char *sstr = NULL;
 310                 if (shared)
 311                         SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 312                                                         &rsign, &rhash);
 313                 else
 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_sigalgs(BIO *out, SSL *s, int client)
 338         {
 339         do_print_sigalgs(out, s, client, 0);
 340         do_print_sigalgs(out, s, client, 1);
 341         return 1;
 342         }
 343
 344 int ssl_print_curves(BIO *out, SSL *s)
 345         {
 346         int i, ncurves, *curves, nid;
 347         const char *cname;
 348         ncurves = SSL_get1_curves(s, NULL);
 349         if (ncurves <= 0)
 350                 return 1;
 351         curves = OPENSSL_malloc(ncurves * sizeof(int));
 352         SSL_get1_curves(s, curves);
 353
 354         BIO_puts(out, "Supported Elliptic Curves: ");
 355         for (i = 0; i < ncurves; i++)
 356                 {
 357                 if (i)
 358                         BIO_puts(out, ":");
 359                 nid = curves[i];
 360                 /* If unrecognised print out hex version */
 361                 if (nid & TLSEXT_nid_unknown)
 362                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 363                 else
 364                         {
 365                         /* Use NIST name for curve if it exists */
 366                         cname = EC_curve_nid2nist(nid);
 367                         if (!cname)
 368                                 cname = OBJ_nid2sn(nid);
 369                         BIO_printf(out, "%s", cname);
 370                         }
 371                 }
 372         BIO_puts(out, "\nShared Elliptic curves: ");
 373         OPENSSL_free(curves);
 374         ncurves = SSL_get_shared_curve(s, -1);
 375         for (i = 0; i < ncurves; i++)
 376                 {
 377                 if (i)
 378                         BIO_puts(out, ":");
 379                 nid = SSL_get_shared_curve(s, i);
 380                 cname = EC_curve_nid2nist(nid);
 381                 if (!cname)
 382                         cname = OBJ_nid2sn(nid);
 383                 BIO_printf(out, "%s", cname);
 384                 }
 385         if (ncurves == 0)
 386                 BIO_puts(out, "NONE");
 387         BIO_puts(out, "\n");
 388         return 1;
 389         }
 390
 391
 392 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 393                                    int argi, long argl, long ret)
 394         {
 395         BIO *out;
 396
 397         out=(BIO *)BIO_get_callback_arg(bio);
 398         if (out == NULL) return(ret);
 399
 400         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 401                 {
 402                 BIO_printf(out,"read from %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                 return(ret);
 406                 }
 407         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 408                 {
 409                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 410                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 411                 BIO_dump(out,argp,(int)ret);
 412                 }
 413         return(ret);
 414         }
 415
 416 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 417         {
 418         const char *str;
 419         int w;
 420
 421         w=where& ~SSL_ST_MASK;
 422
 423         if (w & SSL_ST_CONNECT) str="SSL_connect";
 424         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 425         else str="undefined";
 426
 427         if (where & SSL_CB_LOOP)
 428                 {
 429                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 430                 }
 431         else if (where & SSL_CB_ALERT)
 432                 {
 433                 str=(where & SSL_CB_READ)?"read":"write";
 434                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 435                         str,
 436                         SSL_alert_type_string_long(ret),
 437                         SSL_alert_desc_string_long(ret));
 438                 }
 439         else if (where & SSL_CB_EXIT)
 440                 {
 441                 if (ret == 0)
 442                         BIO_printf(bio_err,"%s:failed in %s\n",
 443                                 str,SSL_state_string_long(s));
 444                 else if (ret < 0)
 445                         {
 446                         BIO_printf(bio_err,"%s:error in %s\n",
 447                                 str,SSL_state_string_long(s));
 448                         }
 449                 }
 450         }
 451
 452
 453 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 454         {
 455         BIO *bio = arg;
 456         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 457
 458         str_write_p = write_p ? ">>>" : "<<<";
 459
 460         switch (version)
 461                 {
 462         case SSL2_VERSION:
 463                 str_version = "SSL 2.0";
 464                 break;
 465         case SSL3_VERSION:
 466                 str_version = "SSL 3.0 ";
 467                 break;
 468         case TLS1_VERSION:
 469                 str_version = "TLS 1.0 ";
 470                 break;
 471         case TLS1_1_VERSION:
 472                 str_version = "TLS 1.1 ";
 473                 break;
 474         case TLS1_2_VERSION:
 475                 str_version = "TLS 1.2 ";
 476                 break;
 477         case DTLS1_VERSION:
 478                 str_version = "DTLS 1.0 ";
 479                 break;
 480         case DTLS1_BAD_VER:
 481                 str_version = "DTLS 1.0 (bad) ";
 482                 break;
 483         default:
 484                 str_version = "???";
 485                 }
 486
 487         if (version == SSL2_VERSION)
 488                 {
 489                 str_details1 = "???";
 490
 491                 if (len > 0)
 492                         {
 493                         switch (((const unsigned char*)buf)[0])
 494                                 {
 495                                 case 0:
 496                                         str_details1 = ", ERROR:";
 497                                         str_details2 = " ???";
 498                                         if (len >= 3)
 499                                                 {
 500                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 501
 502                                                 switch (err)
 503                                                         {
 504                                                 case 0x0001:
 505                                                         str_details2 = " NO-CIPHER-ERROR";
 506                                                         break;
 507                                                 case 0x0002:
 508                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 509                                                         break;
 510                                                 case 0x0004:
 511                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 512                                                         break;
 513                                                 case 0x0006:
 514                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 515                                                         break;
 516                                                         }
 517                                                 }
 518
 519                                         break;
 520                                 case 1:
 521                                         str_details1 = ", CLIENT-HELLO";
 522                                         break;
 523                                 case 2:
 524                                         str_details1 = ", CLIENT-MASTER-KEY";
 525                                         break;
 526                                 case 3:
 527                                         str_details1 = ", CLIENT-FINISHED";
 528                                         break;
 529                                 case 4:
 530                                         str_details1 = ", SERVER-HELLO";
 531                                         break;
 532                                 case 5:
 533                                         str_details1 = ", SERVER-VERIFY";
 534                                         break;
 535                                 case 6:
 536                                         str_details1 = ", SERVER-FINISHED";
 537                                         break;
 538                                 case 7:
 539                                         str_details1 = ", REQUEST-CERTIFICATE";
 540                                         break;
 541                                 case 8:
 542                                         str_details1 = ", CLIENT-CERTIFICATE";
 543                                         break;
 544                                 }
 545                         }
 546                 }
 547
 548         if (version == SSL3_VERSION ||
 549             version == TLS1_VERSION ||
 550             version == DTLS1_VERSION ||
 551             version == DTLS1_BAD_VER)
 552                 {
 553                 switch (content_type)
 554                         {
 555                 case 20:
 556                         str_content_type = "ChangeCipherSpec";
 557                         break;
 558                 case 21:
 559                         str_content_type = "Alert";
 560                         break;
 561                 case 22:
 562                         str_content_type = "Handshake";
 563                         break;
 564                         }
 565
 566                 if (content_type == 21) /* Alert */
 567                         {
 568                         str_details1 = ", ???";
 569
 570                         if (len == 2)
 571                                 {
 572                                 switch (((const unsigned char*)buf)[0])
 573                                         {
 574                                 case 1:
 575                                         str_details1 = ", warning";
 576                                         break;
 577                                 case 2:
 578                                         str_details1 = ", fatal";
 579                                         break;
 580                                         }
 581
 582                                 str_details2 = " ???";
 583                                 switch (((const unsigned char*)buf)[1])
 584                                         {
 585                                 case 0:
 586                                         str_details2 = " close_notify";
 587                                         break;
 588                                 case 10:
 589                                         str_details2 = " unexpected_message";
 590                                         break;
 591                                 case 20:
 592                                         str_details2 = " bad_record_mac";
 593                                         break;
 594                                 case 21:
 595                                         str_details2 = " decryption_failed";
 596                                         break;
 597                                 case 22:
 598                                         str_details2 = " record_overflow";
 599                                         break;
 600                                 case 30:
 601                                         str_details2 = " decompression_failure";
 602                                         break;
 603                                 case 40:
 604                                         str_details2 = " handshake_failure";
 605                                         break;
 606                                 case 42:
 607                                         str_details2 = " bad_certificate";
 608                                         break;
 609                                 case 43:
 610                                         str_details2 = " unsupported_certificate";
 611                                         break;
 612                                 case 44:
 613                                         str_details2 = " certificate_revoked";
 614                                         break;
 615                                 case 45:
 616                                         str_details2 = " certificate_expired";
 617                                         break;
 618                                 case 46:
 619                                         str_details2 = " certificate_unknown";
 620                                         break;
 621                                 case 47:
 622                                         str_details2 = " illegal_parameter";
 623                                         break;
 624                                 case 48:
 625                                         str_details2 = " unknown_ca";
 626                                         break;
 627                                 case 49:
 628                                         str_details2 = " access_denied";
 629                                         break;
 630                                 case 50:
 631                                         str_details2 = " decode_error";
 632                                         break;
 633                                 case 51:
 634                                         str_details2 = " decrypt_error";
 635                                         break;
 636                                 case 60:
 637                                         str_details2 = " export_restriction";
 638                                         break;
 639                                 case 70:
 640                                         str_details2 = " protocol_version";
 641                                         break;
 642                                 case 71:
 643                                         str_details2 = " insufficient_security";
 644                                         break;
 645                                 case 80:
 646                                         str_details2 = " internal_error";
 647                                         break;
 648                                 case 90:
 649                                         str_details2 = " user_canceled";
 650                                         break;
 651                                 case 100:
 652                                         str_details2 = " no_renegotiation";
 653                                         break;
 654                                 case 110:
 655                                         str_details2 = " unsupported_extension";
 656                                         break;
 657                                 case 111:
 658                                         str_details2 = " certificate_unobtainable";
 659                                         break;
 660                                 case 112:
 661                                         str_details2 = " unrecognized_name";
 662                                         break;
 663                                 case 113:
 664                                         str_details2 = " bad_certificate_status_response";
 665                                         break;
 666                                 case 114:
 667                                         str_details2 = " bad_certificate_hash_value";
 668                                         break;
 669                                 case 115:
 670                                         str_details2 = " unknown_psk_identity";
 671                                         break;
 672                                         }
 673                                 }
 674                         }
 675
 676                 if (content_type == 22) /* Handshake */
 677                         {
 678                         str_details1 = "???";
 679
 680                         if (len > 0)
 681                                 {
 682                                 switch (((const unsigned char*)buf)[0])
 683                                         {
 684                                 case 0:
 685                                         str_details1 = ", HelloRequest";
 686                                         break;
 687                                 case 1:
 688                                         str_details1 = ", ClientHello";
 689                                         break;
 690                                 case 2:
 691                                         str_details1 = ", ServerHello";
 692                                         break;
 693                                 case 3:
 694                                         str_details1 = ", HelloVerifyRequest";
 695                                         break;
 696                                 case 11:
 697                                         str_details1 = ", Certificate";
 698                                         break;
 699                                 case 12:
 700                                         str_details1 = ", ServerKeyExchange";
 701                                         break;
 702                                 case 13:
 703                                         str_details1 = ", CertificateRequest";
 704                                         break;
 705                                 case 14:
 706                                         str_details1 = ", ServerHelloDone";
 707                                         break;
 708                                 case 15:
 709                                         str_details1 = ", CertificateVerify";
 710                                         break;
 711                                 case 16:
 712                                         str_details1 = ", ClientKeyExchange";
 713                                         break;
 714                                 case 20:
 715                                         str_details1 = ", Finished";
 716                                         break;
 717                                         }
 718                                 }
 719                         }
 720
 721 #ifndef OPENSSL_NO_HEARTBEATS
 722                 if (content_type == 24) /* Heartbeat */
 723                         {
 724                         str_details1 = ", Heartbeat";
 725
 726                         if (len > 0)
 727                                 {
 728                                 switch (((const unsigned char*)buf)[0])
 729                                         {
 730                                 case 1:
 731                                         str_details1 = ", HeartbeatRequest";
 732                                         break;
 733                                 case 2:
 734                                         str_details1 = ", HeartbeatResponse";
 735                                         break;
 736                                         }
 737                                 }
 738                         }
 739 #endif
 740                 }
 741
 742         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);
 743
 744         if (len > 0)
 745                 {
 746                 size_t num, i;
 747
 748                 BIO_printf(bio, "   ");
 749                 num = len;
 750 #if 0
 751                 if (num > 16)
 752                         num = 16;
 753 #endif
 754                 for (i = 0; i < num; i++)
 755                         {
 756                         if (i % 16 == 0 && i > 0)
 757                                 BIO_printf(bio, "\n   ");
 758                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 759                         }
 760                 if (i < len)
 761                         BIO_printf(bio, " ...");
 762                 BIO_printf(bio, "\n");
 763                 }
 764         (void)BIO_flush(bio);
 765         }
 766
 767 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 768                                         unsigned char *data, int len,
 769                                         void *arg)
 770         {
 771         BIO *bio = arg;
 772         char *extname;
 773
 774         switch(type)
 775                 {
 776                 case TLSEXT_TYPE_server_name:
 777                 extname = "server name";
 778                 break;
 779
 780                 case TLSEXT_TYPE_max_fragment_length:
 781                 extname = "max fragment length";
 782                 break;
 783
 784                 case TLSEXT_TYPE_client_certificate_url:
 785                 extname = "client certificate URL";
 786                 break;
 787
 788                 case TLSEXT_TYPE_trusted_ca_keys:
 789                 extname = "trusted CA keys";
 790                 break;
 791
 792                 case TLSEXT_TYPE_truncated_hmac:
 793                 extname = "truncated HMAC";
 794                 break;
 795
 796                 case TLSEXT_TYPE_status_request:
 797                 extname = "status request";
 798                 break;
 799
 800                 case TLSEXT_TYPE_user_mapping:
 801                 extname = "user mapping";
 802                 break;
 803
 804                 case TLSEXT_TYPE_client_authz:
 805                 extname = "client authz";
 806                 break;
 807
 808                 case TLSEXT_TYPE_server_authz:
 809                 extname = "server authz";
 810                 break;
 811
 812                 case TLSEXT_TYPE_cert_type:
 813                 extname = "cert type";
 814                 break;
 815
 816                 case TLSEXT_TYPE_elliptic_curves:
 817                 extname = "elliptic curves";
 818                 break;
 819
 820                 case TLSEXT_TYPE_ec_point_formats:
 821                 extname = "EC point formats";
 822                 break;
 823
 824                 case TLSEXT_TYPE_srp:
 825                 extname = "SRP";
 826                 break;
 827
 828                 case TLSEXT_TYPE_signature_algorithms:
 829                 extname = "signature algorithms";
 830                 break;
 831
 832                 case TLSEXT_TYPE_use_srtp:
 833                 extname = "use SRTP";
 834                 break;
 835
 836                 case TLSEXT_TYPE_heartbeat:
 837                 extname = "heartbeat";
 838                 break;
 839
 840                 case TLSEXT_TYPE_session_ticket:
 841                 extname = "session ticket";
 842                 break;
 843
 844                 case TLSEXT_TYPE_renegotiate:
 845                 extname = "renegotiation info";
 846                 break;
 847
 848 #ifdef TLSEXT_TYPE_opaque_prf_input
 849                 case TLSEXT_TYPE_opaque_prf_input:
 850                 extname = "opaque PRF input";
 851                 break;
 852 #endif
 853 #ifdef TLSEXT_TYPE_next_proto_neg
 854                 case TLSEXT_TYPE_next_proto_neg:
 855                 extname = "next protocol";
 856                 break;
 857 #endif
 858
 859                 default:
 860                 extname = "unknown";
 861                 break;
 862
 863                 }
 864
 865         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
 866                         client_server ? "server": "client",
 867                         extname, type, len);
 868         BIO_dump(bio, (char *)data, len);
 869         (void)BIO_flush(bio);
 870         }
 871
 872 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
 873         {
 874         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 875         unsigned int length, resultlength;
 876         union {
 877                 struct sockaddr sa;
 878                 struct sockaddr_in s4;
 879 #if OPENSSL_USE_IPV6
 880                 struct sockaddr_in6 s6;
 881 #endif
 882         } peer;
 883
 884         /* Initialize a random secret */
 885         if (!cookie_initialized)
 886                 {
 887                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
 888                         {
 889                         BIO_printf(bio_err,"error setting random cookie secret\n");
 890                         return 0;
 891                         }
 892                 cookie_initialized = 1;
 893                 }
 894
 895         /* Read peer information */
 896         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 897
 898         /* Create buffer with peer's address and port */
 899         length = 0;
 900         switch (peer.sa.sa_family)
 901                 {
 902         case AF_INET:
 903                 length += sizeof(struct in_addr);
 904                 length += sizeof(peer.s4.sin_port);
 905                 break;
 906 #if OPENSSL_USE_IPV6
 907         case AF_INET6:
 908                 length += sizeof(struct in6_addr);
 909                 length += sizeof(peer.s6.sin6_port);
 910                 break;
 911 #endif
 912         default:
 913                 OPENSSL_assert(0);
 914                 break;
 915                 }
 916         buffer = OPENSSL_malloc(length);
 917
 918         if (buffer == NULL)
 919                 {
 920                 BIO_printf(bio_err,"out of memory\n");
 921                 return 0;
 922                 }
 923
 924         switch (peer.sa.sa_family)
 925                 {
 926         case AF_INET:
 927                 memcpy(buffer,
 928                        &peer.s4.sin_port,
 929                        sizeof(peer.s4.sin_port));
 930                 memcpy(buffer + sizeof(peer.s4.sin_port),
 931                        &peer.s4.sin_addr,
 932                        sizeof(struct in_addr));
 933                 break;
 934 #if OPENSSL_USE_IPV6
 935         case AF_INET6:
 936                 memcpy(buffer,
 937                        &peer.s6.sin6_port,
 938                        sizeof(peer.s6.sin6_port));
 939                 memcpy(buffer + sizeof(peer.s6.sin6_port),
 940                        &peer.s6.sin6_addr,
 941                        sizeof(struct in6_addr));
 942                 break;
 943 #endif
 944         default:
 945                 OPENSSL_assert(0);
 946                 break;
 947                 }
 948
 949         /* Calculate HMAC of buffer using the secret */
 950         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
 951              buffer, length, result, &resultlength);
 952         OPENSSL_free(buffer);
 953
 954         memcpy(cookie, result, resultlength);
 955         *cookie_len = resultlength;
 956
 957         return 1;
 958         }
 959
 960 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
 961         {
 962         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 963         unsigned int length, resultlength;
 964         union {
 965                 struct sockaddr sa;
 966                 struct sockaddr_in s4;
 967 #if OPENSSL_USE_IPV6
 968                 struct sockaddr_in6 s6;
 969 #endif
 970         } peer;
 971
 972         /* If secret isn't initialized yet, the cookie can't be valid */
 973         if (!cookie_initialized)
 974                 return 0;
 975
 976         /* Read peer information */
 977         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 978
 979         /* Create buffer with peer's address and port */
 980         length = 0;
 981         switch (peer.sa.sa_family)
 982                 {
 983         case AF_INET:
 984                 length += sizeof(struct in_addr);
 985                 length += sizeof(peer.s4.sin_port);
 986                 break;
 987 #if OPENSSL_USE_IPV6
 988         case AF_INET6:
 989                 length += sizeof(struct in6_addr);
 990                 length += sizeof(peer.s6.sin6_port);
 991                 break;
 992 #endif
 993         default:
 994                 OPENSSL_assert(0);
 995                 break;
 996                 }
 997         buffer = OPENSSL_malloc(length);
 998
 999         if (buffer == NULL)
1000                 {
1001                 BIO_printf(bio_err,"out of memory\n");
1002                 return 0;
1003                 }
1004
1005         switch (peer.sa.sa_family)
1006                 {
1007         case AF_INET:
1008                 memcpy(buffer,
1009                        &peer.s4.sin_port,
1010                        sizeof(peer.s4.sin_port));
1011                 memcpy(buffer + sizeof(peer.s4.sin_port),
1012                        &peer.s4.sin_addr,
1013                        sizeof(struct in_addr));
1014                 break;
1015 #if OPENSSL_USE_IPV6
1016         case AF_INET6:
1017                 memcpy(buffer,
1018                        &peer.s6.sin6_port,
1019                        sizeof(peer.s6.sin6_port));
1020                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1021                        &peer.s6.sin6_addr,
1022                        sizeof(struct in6_addr));
1023                 break;
1024 #endif
1025         default:
1026                 OPENSSL_assert(0);
1027                 break;
1028                 }
1029
1030         /* Calculate HMAC of buffer using the secret */
1031         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1032              buffer, length, result, &resultlength);
1033         OPENSSL_free(buffer);
1034
1035         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1036                 return 1;
1037
1038         return 0;
1039         }
1040
1041 /* Example of extended certificate handling. Where the standard support
1042  * of one certificate per algorithm is not sufficient an application
1043  * can decide which certificate(s) to use at runtime based on whatever
1044  * criteria it deems appropriate.
1045  */
1046
1047 /* Linked list of certificates, keys and chains */
1048 struct  ssl_excert_st
1049         {
1050         int certform;
1051         const char *certfile;
1052         int keyform;
1053         const char *keyfile;
1054         const char *chainfile;
1055         X509 *cert;
1056         EVP_PKEY *key;
1057         STACK_OF(X509) *chain;
1058         struct ssl_excert_st *next, *prev;
1059         };
1060
1061 /* Very basic selection callback: just use any certificate chain
1062  * reported as valid. More sophisticated could prioritise according
1063  * to local policy.
1064  */
1065 static int set_cert_cb(SSL *ssl, void *arg)
1066         {
1067         SSL_EXCERT *exc = arg;
1068         SSL_certs_clear(ssl);
1069
1070         if (!exc)
1071                 return 1;
1072
1073         /* Go to end of list and traverse backwards since we prepend
1074          * newer entries this retains the original order.
1075          */
1076         while (exc->next)
1077                 exc = exc->next;
1078
1079         while(exc)
1080                 {
1081                 if (SSL_check_chain(ssl, exc->cert, exc->key, exc->chain))
1082                         {
1083                         SSL_use_certificate(ssl, exc->cert);
1084                         SSL_use_PrivateKey(ssl, exc->key);
1085                         if (exc->chain)
1086                                 SSL_set1_chain(ssl, exc->chain);
1087                         }
1088                 exc = exc->prev;
1089                 }
1090         return 1;
1091         }
1092
1093 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1094         {
1095         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1096         }
1097
1098 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1099         {
1100         SSL_EXCERT *exc;
1101         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1102         if (!exc)
1103                 return 0;
1104         exc->certfile = NULL;
1105         exc->keyfile = NULL;
1106         exc->chainfile = NULL;
1107         exc->cert = NULL;
1108         exc->key = NULL;
1109         exc->chain = NULL;
1110         exc->prev = NULL;
1111
1112         exc->next = *pexc;
1113         *pexc = exc;
1114
1115         if (exc->next)
1116                 {
1117                 exc->certform = exc->next->certform;
1118                 exc->keyform = exc->next->keyform;
1119                 exc->next->prev = exc;
1120                 }
1121         else
1122                 {
1123                 exc->certform = FORMAT_PEM;
1124                 exc->keyform = FORMAT_PEM;
1125                 }
1126         return 1;
1127
1128         }
1129
1130 void ssl_excert_free(SSL_EXCERT *exc)
1131         {
1132         SSL_EXCERT *curr;
1133         while (exc)
1134                 {
1135                 if (exc->cert)
1136                         X509_free(exc->cert);
1137                 if (exc->key)
1138                         EVP_PKEY_free(exc->key);
1139                 if (exc->chain)
1140                         sk_X509_pop_free(exc->chain, X509_free);
1141                 curr = exc;
1142                 exc = exc->next;
1143                 OPENSSL_free(curr);
1144                 }
1145         }
1146
1147 int load_excert(SSL_EXCERT **pexc, BIO *err)
1148         {
1149         SSL_EXCERT *exc = *pexc;
1150         if (!exc)
1151                 return 1;
1152         /* If nothing in list, free and set to NULL */
1153         if (!exc->certfile && !exc->next)
1154                 {
1155                 ssl_excert_free(exc);
1156                 *pexc = NULL;
1157                 return 1;
1158                 }
1159         for(; exc; exc=exc->next)
1160                 {
1161                 if (!exc->certfile)
1162                         {
1163                         BIO_printf(err, "Missing filename\n");
1164                         return 0;
1165                         }
1166                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1167                                         NULL, NULL, "Server Certificate");
1168                 if (!exc->cert)
1169                         return 0;
1170                 if (exc->keyfile)
1171                         exc->keyfile = exc->certfile;
1172                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1173                                         NULL, NULL, "Server Certificate");
1174                 if (!exc->key)
1175                         return 0;
1176                 if (exc->chainfile)
1177                         {
1178                         exc->chain = load_certs(err,
1179                                                 exc->chainfile, FORMAT_PEM,
1180                                                 NULL, NULL,
1181                                                 "Server Chain");
1182                         if (!exc->chainfile)
1183                                 return 0;
1184                         }
1185                 }
1186         return 1;
1187         }
1188
1189
1190 int args_excert(char ***pargs, int *pargc,
1191                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1192         {
1193         char *arg = **pargs, *argn = (*pargs)[1];
1194         SSL_EXCERT *exc = *pexc;
1195         if (!exc && !ssl_excert_prepend(&exc))
1196                 {
1197                 BIO_printf(err, "Error initialising xcert\n");
1198                 *badarg = 1;
1199                 goto err;
1200                 }
1201         if (strcmp(arg, "-xcert") == 0)
1202                 {
1203                 if (!argn)
1204                         {
1205                         *badarg = 1;
1206                         return 1;
1207                         }
1208                 if (exc->certfile && !ssl_excert_prepend(&exc))
1209                         {
1210                         BIO_printf(err, "Error adding xcert\n");
1211                         *badarg = 1;
1212                         goto err;
1213                         }
1214                 exc->certfile = argn;
1215                 }
1216         else if (strcmp(arg,"-xkey") == 0)
1217                 {
1218                 if (!argn)
1219                         {
1220                         *badarg = 1;
1221                         return 1;
1222                         }
1223                 if (exc->keyfile)
1224                         {
1225                         BIO_printf(err, "Key already specified\n");
1226                         *badarg = 1;
1227                         return 1;
1228                         }
1229                 exc->keyfile = argn;
1230                 }
1231         else if (strcmp(arg,"-xchain") == 0)
1232                 {
1233                 if (!argn)
1234                         {
1235                         *badarg = 1;
1236                         return 1;
1237                         }
1238                 if (exc->chainfile)
1239                         {
1240                         BIO_printf(err, "Chain already specified\n");
1241                         *badarg = 1;
1242                         return 1;
1243                         }
1244                 exc->chainfile = argn;
1245                 }
1246         else if (strcmp(arg,"-xcertform") == 0)
1247                 {
1248                 if (!argn)
1249                         {
1250                         *badarg = 1;
1251                         goto err;
1252                         }
1253                 exc->certform = str2fmt(argn);
1254                 }
1255         else if (strcmp(arg,"-xkeyform") == 0)
1256                 {
1257                 if (!argn)
1258                         {
1259                         *badarg = 1;
1260                         goto err;
1261                         }
1262                 exc->keyform = str2fmt(argn);
1263                 }
1264         else
1265                 return 0;
1266
1267         (*pargs) += 2;
1268
1269         if (pargc)
1270                 *pargc -= 2;
1271
1272         *pexc = exc;
1273
1274         return 1;
1275
1276         err:
1277         ERR_print_errors(err);
1278         ssl_excert_free(exc);
1279         *pexc = NULL;
1280         return 1;
1281         }
1282