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, int build_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         if (!chain && build_chain && !SSL_CTX_build_cert_chain(ctx, 0))
 286                 {
 287                 BIO_printf(bio_err,"error building certificate chain\n");
 288                 ERR_print_errors(bio_err);
 289                 return 0;
 290                 }
 291
 292         return 1;
 293         }
 294
 295 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
 296         {
 297         const unsigned char *p;
 298         int i;
 299         int cert_type_num = SSL_get0_certificate_types(s, &p);
 300         if (!cert_type_num)
 301                 return;
 302         BIO_puts(bio, "Client Certificate Types: ");
 303         for (i = 0; i < cert_type_num; i++)
 304                 {
 305                 unsigned char cert_type = p[i];
 306                 char *cname;
 307                 switch(cert_type)
 308                         {
 309                 case TLS_CT_RSA_SIGN:
 310                         cname = "RSA sign";
 311                         break;
 312
 313                 case TLS_CT_DSS_SIGN:
 314                         cname = "DSA sign";
 315                         break;
 316
 317                 case TLS_CT_RSA_FIXED_DH:
 318                         cname = "RSA fixed DH";
 319                         break;
 320
 321                 case TLS_CT_DSS_FIXED_DH:
 322                         cname = "DSS fixed DH";
 323                         break;
 324
 325                 case TLS_CT_ECDSA_SIGN:
 326                         cname = "ECDSA sign";
 327                         break;
 328
 329                 case TLS_CT_RSA_FIXED_ECDH:
 330                         cname = "RSA fixed ECDH";
 331                         break;
 332
 333                 case TLS_CT_ECDSA_FIXED_ECDH:
 334                         cname = "ECDSA fixed ECDH";
 335                         break;
 336
 337                 case TLS_CT_GOST94_SIGN:
 338                         cname = "GOST94 Sign";
 339                         break;
 340
 341                 case TLS_CT_GOST01_SIGN:
 342                         cname = "GOST01 Sign";
 343                         break;
 344
 345                 default:
 346                          cname = NULL;
 347                         }
 348
 349                 if (i)
 350                         BIO_puts(bio, ", ");
 351
 352                 if (cname)
 353                         BIO_puts(bio, cname);
 354                 else
 355                         BIO_printf(bio, "UNKNOWN (%d),", cert_type);
 356                 }
 357         BIO_puts(bio, "\n");
 358         }
 359
 360 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
 361         {
 362         int i, nsig, client;
 363         client = SSL_is_server(s) ? 0 : 1;
 364         if (shared)
 365                 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
 366                                                         NULL, NULL);
 367         else
 368                 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 369         if (nsig == 0)
 370                 return 1;
 371
 372         if (shared)
 373                 BIO_puts(out, "Shared ");
 374
 375         if (client)
 376                 BIO_puts(out, "Requested ");
 377         BIO_puts(out, "Signature Algorithms: ");
 378         for (i = 0; i < nsig; i++)
 379                 {
 380                 int hash_nid, sign_nid;
 381                 unsigned char rhash, rsign;
 382                 const char *sstr = NULL;
 383                 if (shared)
 384                         SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 385                                                         &rsign, &rhash);
 386                 else
 387                         SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 388                                                         &rsign, &rhash);
 389                 if (i)
 390                         BIO_puts(out, ":");
 391                 if (sign_nid == EVP_PKEY_RSA)
 392                         sstr = "RSA";
 393                 else if(sign_nid == EVP_PKEY_DSA)
 394                         sstr = "DSA";
 395                 else if(sign_nid == EVP_PKEY_EC)
 396                         sstr = "ECDSA";
 397                 if (sstr)
 398                         BIO_printf(out,"%s+", sstr);
 399                 else
 400                         BIO_printf(out,"0x%02X+", (int)rsign);
 401                 if (hash_nid != NID_undef)
 402                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
 403                 else
 404                         BIO_printf(out,"0x%02X", (int)rhash);
 405                 }
 406         BIO_puts(out, "\n");
 407         return 1;
 408         }
 409
 410 int ssl_print_sigalgs(BIO *out, SSL *s)
 411         {
 412         if (!SSL_is_server(s))
 413                 ssl_print_client_cert_types(out, s);
 414         do_print_sigalgs(out, s, 0);
 415         do_print_sigalgs(out, s, 1);
 416         return 1;
 417         }
 418
 419 int ssl_print_curves(BIO *out, SSL *s)
 420         {
 421         int i, ncurves, *curves, nid;
 422         const char *cname;
 423         ncurves = SSL_get1_curves(s, NULL);
 424         if (ncurves <= 0)
 425                 return 1;
 426         curves = OPENSSL_malloc(ncurves * sizeof(int));
 427         SSL_get1_curves(s, curves);
 428
 429         BIO_puts(out, "Supported Elliptic Curves: ");
 430         for (i = 0; i < ncurves; i++)
 431                 {
 432                 if (i)
 433                         BIO_puts(out, ":");
 434                 nid = curves[i];
 435                 /* If unrecognised print out hex version */
 436                 if (nid & TLSEXT_nid_unknown)
 437                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 438                 else
 439                         {
 440                         /* Use NIST name for curve if it exists */
 441                         cname = EC_curve_nid2nist(nid);
 442                         if (!cname)
 443                                 cname = OBJ_nid2sn(nid);
 444                         BIO_printf(out, "%s", cname);
 445                         }
 446                 }
 447         BIO_puts(out, "\nShared Elliptic curves: ");
 448         OPENSSL_free(curves);
 449         ncurves = SSL_get_shared_curve(s, -1);
 450         for (i = 0; i < ncurves; i++)
 451                 {
 452                 if (i)
 453                         BIO_puts(out, ":");
 454                 nid = SSL_get_shared_curve(s, i);
 455                 cname = EC_curve_nid2nist(nid);
 456                 if (!cname)
 457                         cname = OBJ_nid2sn(nid);
 458                 BIO_printf(out, "%s", cname);
 459                 }
 460         if (ncurves == 0)
 461                 BIO_puts(out, "NONE");
 462         BIO_puts(out, "\n");
 463         return 1;
 464         }
 465
 466
 467 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 468                                    int argi, long argl, long ret)
 469         {
 470         BIO *out;
 471
 472         out=(BIO *)BIO_get_callback_arg(bio);
 473         if (out == NULL) return(ret);
 474
 475         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 476                 {
 477                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 478                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 479                 BIO_dump(out,argp,(int)ret);
 480                 return(ret);
 481                 }
 482         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 483                 {
 484                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 485                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 486                 BIO_dump(out,argp,(int)ret);
 487                 }
 488         return(ret);
 489         }
 490
 491 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 492         {
 493         const char *str;
 494         int w;
 495
 496         w=where& ~SSL_ST_MASK;
 497
 498         if (w & SSL_ST_CONNECT) str="SSL_connect";
 499         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 500         else str="undefined";
 501
 502         if (where & SSL_CB_LOOP)
 503                 {
 504                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 505                 }
 506         else if (where & SSL_CB_ALERT)
 507                 {
 508                 str=(where & SSL_CB_READ)?"read":"write";
 509                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 510                         str,
 511                         SSL_alert_type_string_long(ret),
 512                         SSL_alert_desc_string_long(ret));
 513                 }
 514         else if (where & SSL_CB_EXIT)
 515                 {
 516                 if (ret == 0)
 517                         BIO_printf(bio_err,"%s:failed in %s\n",
 518                                 str,SSL_state_string_long(s));
 519                 else if (ret < 0)
 520                         {
 521                         BIO_printf(bio_err,"%s:error in %s\n",
 522                                 str,SSL_state_string_long(s));
 523                         }
 524                 }
 525         }
 526
 527
 528 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 529         {
 530         BIO *bio = arg;
 531         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 532
 533         str_write_p = write_p ? ">>>" : "<<<";
 534
 535         switch (version)
 536                 {
 537         case SSL2_VERSION:
 538                 str_version = "SSL 2.0";
 539                 break;
 540         case SSL3_VERSION:
 541                 str_version = "SSL 3.0 ";
 542                 break;
 543         case TLS1_VERSION:
 544                 str_version = "TLS 1.0 ";
 545                 break;
 546         case TLS1_1_VERSION:
 547                 str_version = "TLS 1.1 ";
 548                 break;
 549         case TLS1_2_VERSION:
 550                 str_version = "TLS 1.2 ";
 551                 break;
 552         case DTLS1_VERSION:
 553                 str_version = "DTLS 1.0 ";
 554                 break;
 555         case DTLS1_BAD_VER:
 556                 str_version = "DTLS 1.0 (bad) ";
 557                 break;
 558         default:
 559                 str_version = "???";
 560                 }
 561
 562         if (version == SSL2_VERSION)
 563                 {
 564                 str_details1 = "???";
 565
 566                 if (len > 0)
 567                         {
 568                         switch (((const unsigned char*)buf)[0])
 569                                 {
 570                                 case 0:
 571                                         str_details1 = ", ERROR:";
 572                                         str_details2 = " ???";
 573                                         if (len >= 3)
 574                                                 {
 575                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 576
 577                                                 switch (err)
 578                                                         {
 579                                                 case 0x0001:
 580                                                         str_details2 = " NO-CIPHER-ERROR";
 581                                                         break;
 582                                                 case 0x0002:
 583                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 584                                                         break;
 585                                                 case 0x0004:
 586                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 587                                                         break;
 588                                                 case 0x0006:
 589                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 590                                                         break;
 591                                                         }
 592                                                 }
 593
 594                                         break;
 595                                 case 1:
 596                                         str_details1 = ", CLIENT-HELLO";
 597                                         break;
 598                                 case 2:
 599                                         str_details1 = ", CLIENT-MASTER-KEY";
 600                                         break;
 601                                 case 3:
 602                                         str_details1 = ", CLIENT-FINISHED";
 603                                         break;
 604                                 case 4:
 605                                         str_details1 = ", SERVER-HELLO";
 606                                         break;
 607                                 case 5:
 608                                         str_details1 = ", SERVER-VERIFY";
 609                                         break;
 610                                 case 6:
 611                                         str_details1 = ", SERVER-FINISHED";
 612                                         break;
 613                                 case 7:
 614                                         str_details1 = ", REQUEST-CERTIFICATE";
 615                                         break;
 616                                 case 8:
 617                                         str_details1 = ", CLIENT-CERTIFICATE";
 618                                         break;
 619                                 }
 620                         }
 621                 }
 622
 623         if (version == SSL3_VERSION ||
 624             version == TLS1_VERSION ||
 625             version == TLS1_1_VERSION ||
 626             version == TLS1_2_VERSION ||
 627             version == DTLS1_VERSION ||
 628             version == DTLS1_BAD_VER)
 629                 {
 630                 switch (content_type)
 631                         {
 632                 case 20:
 633                         str_content_type = "ChangeCipherSpec";
 634                         break;
 635                 case 21:
 636                         str_content_type = "Alert";
 637                         break;
 638                 case 22:
 639                         str_content_type = "Handshake";
 640                         break;
 641                         }
 642
 643                 if (content_type == 21) /* Alert */
 644                         {
 645                         str_details1 = ", ???";
 646
 647                         if (len == 2)
 648                                 {
 649                                 switch (((const unsigned char*)buf)[0])
 650                                         {
 651                                 case 1:
 652                                         str_details1 = ", warning";
 653                                         break;
 654                                 case 2:
 655                                         str_details1 = ", fatal";
 656                                         break;
 657                                         }
 658
 659                                 str_details2 = " ???";
 660                                 switch (((const unsigned char*)buf)[1])
 661                                         {
 662                                 case 0:
 663                                         str_details2 = " close_notify";
 664                                         break;
 665                                 case 10:
 666                                         str_details2 = " unexpected_message";
 667                                         break;
 668                                 case 20:
 669                                         str_details2 = " bad_record_mac";
 670                                         break;
 671                                 case 21:
 672                                         str_details2 = " decryption_failed";
 673                                         break;
 674                                 case 22:
 675                                         str_details2 = " record_overflow";
 676                                         break;
 677                                 case 30:
 678                                         str_details2 = " decompression_failure";
 679                                         break;
 680                                 case 40:
 681                                         str_details2 = " handshake_failure";
 682                                         break;
 683                                 case 42:
 684                                         str_details2 = " bad_certificate";
 685                                         break;
 686                                 case 43:
 687                                         str_details2 = " unsupported_certificate";
 688                                         break;
 689                                 case 44:
 690                                         str_details2 = " certificate_revoked";
 691                                         break;
 692                                 case 45:
 693                                         str_details2 = " certificate_expired";
 694                                         break;
 695                                 case 46:
 696                                         str_details2 = " certificate_unknown";
 697                                         break;
 698                                 case 47:
 699                                         str_details2 = " illegal_parameter";
 700                                         break;
 701                                 case 48:
 702                                         str_details2 = " unknown_ca";
 703                                         break;
 704                                 case 49:
 705                                         str_details2 = " access_denied";
 706                                         break;
 707                                 case 50:
 708                                         str_details2 = " decode_error";
 709                                         break;
 710                                 case 51:
 711                                         str_details2 = " decrypt_error";
 712                                         break;
 713                                 case 60:
 714                                         str_details2 = " export_restriction";
 715                                         break;
 716                                 case 70:
 717                                         str_details2 = " protocol_version";
 718                                         break;
 719                                 case 71:
 720                                         str_details2 = " insufficient_security";
 721                                         break;
 722                                 case 80:
 723                                         str_details2 = " internal_error";
 724                                         break;
 725                                 case 90:
 726                                         str_details2 = " user_canceled";
 727                                         break;
 728                                 case 100:
 729                                         str_details2 = " no_renegotiation";
 730                                         break;
 731                                 case 110:
 732                                         str_details2 = " unsupported_extension";
 733                                         break;
 734                                 case 111:
 735                                         str_details2 = " certificate_unobtainable";
 736                                         break;
 737                                 case 112:
 738                                         str_details2 = " unrecognized_name";
 739                                         break;
 740                                 case 113:
 741                                         str_details2 = " bad_certificate_status_response";
 742                                         break;
 743                                 case 114:
 744                                         str_details2 = " bad_certificate_hash_value";
 745                                         break;
 746                                 case 115:
 747                                         str_details2 = " unknown_psk_identity";
 748                                         break;
 749                                         }
 750                                 }
 751                         }
 752
 753                 if (content_type == 22) /* Handshake */
 754                         {
 755                         str_details1 = "???";
 756
 757                         if (len > 0)
 758                                 {
 759                                 switch (((const unsigned char*)buf)[0])
 760                                         {
 761                                 case 0:
 762                                         str_details1 = ", HelloRequest";
 763                                         break;
 764                                 case 1:
 765                                         str_details1 = ", ClientHello";
 766                                         break;
 767                                 case 2:
 768                                         str_details1 = ", ServerHello";
 769                                         break;
 770                                 case 3:
 771                                         str_details1 = ", HelloVerifyRequest";
 772                                         break;
 773                                 case 11:
 774                                         str_details1 = ", Certificate";
 775                                         break;
 776                                 case 12:
 777                                         str_details1 = ", ServerKeyExchange";
 778                                         break;
 779                                 case 13:
 780                                         str_details1 = ", CertificateRequest";
 781                                         break;
 782                                 case 14:
 783                                         str_details1 = ", ServerHelloDone";
 784                                         break;
 785                                 case 15:
 786                                         str_details1 = ", CertificateVerify";
 787                                         break;
 788                                 case 16:
 789                                         str_details1 = ", ClientKeyExchange";
 790                                         break;
 791                                 case 20:
 792                                         str_details1 = ", Finished";
 793                                         break;
 794                                         }
 795                                 }
 796                         }
 797
 798 #ifndef OPENSSL_NO_HEARTBEATS
 799                 if (content_type == 24) /* Heartbeat */
 800                         {
 801                         str_details1 = ", Heartbeat";
 802
 803                         if (len > 0)
 804                                 {
 805                                 switch (((const unsigned char*)buf)[0])
 806                                         {
 807                                 case 1:
 808                                         str_details1 = ", HeartbeatRequest";
 809                                         break;
 810                                 case 2:
 811                                         str_details1 = ", HeartbeatResponse";
 812                                         break;
 813                                         }
 814                                 }
 815                         }
 816 #endif
 817                 }
 818
 819         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);
 820
 821         if (len > 0)
 822                 {
 823                 size_t num, i;
 824
 825                 BIO_printf(bio, "   ");
 826                 num = len;
 827 #if 0
 828                 if (num > 16)
 829                         num = 16;
 830 #endif
 831                 for (i = 0; i < num; i++)
 832                         {
 833                         if (i % 16 == 0 && i > 0)
 834                                 BIO_printf(bio, "\n   ");
 835                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 836                         }
 837                 if (i < len)
 838                         BIO_printf(bio, " ...");
 839                 BIO_printf(bio, "\n");
 840                 }
 841         (void)BIO_flush(bio);
 842         }
 843
 844 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 845                                         unsigned char *data, int len,
 846                                         void *arg)
 847         {
 848         BIO *bio = arg;
 849         char *extname;
 850
 851         switch(type)
 852                 {
 853                 case TLSEXT_TYPE_server_name:
 854                 extname = "server name";
 855                 break;
 856
 857                 case TLSEXT_TYPE_max_fragment_length:
 858                 extname = "max fragment length";
 859                 break;
 860
 861                 case TLSEXT_TYPE_client_certificate_url:
 862                 extname = "client certificate URL";
 863                 break;
 864
 865                 case TLSEXT_TYPE_trusted_ca_keys:
 866                 extname = "trusted CA keys";
 867                 break;
 868
 869                 case TLSEXT_TYPE_truncated_hmac:
 870                 extname = "truncated HMAC";
 871                 break;
 872
 873                 case TLSEXT_TYPE_status_request:
 874                 extname = "status request";
 875                 break;
 876
 877                 case TLSEXT_TYPE_user_mapping:
 878                 extname = "user mapping";
 879                 break;
 880
 881                 case TLSEXT_TYPE_client_authz:
 882                 extname = "client authz";
 883                 break;
 884
 885                 case TLSEXT_TYPE_server_authz:
 886                 extname = "server authz";
 887                 break;
 888
 889                 case TLSEXT_TYPE_cert_type:
 890                 extname = "cert type";
 891                 break;
 892
 893                 case TLSEXT_TYPE_elliptic_curves:
 894                 extname = "elliptic curves";
 895                 break;
 896
 897                 case TLSEXT_TYPE_ec_point_formats:
 898                 extname = "EC point formats";
 899                 break;
 900
 901                 case TLSEXT_TYPE_srp:
 902                 extname = "SRP";
 903                 break;
 904
 905                 case TLSEXT_TYPE_signature_algorithms:
 906                 extname = "signature algorithms";
 907                 break;
 908
 909                 case TLSEXT_TYPE_use_srtp:
 910                 extname = "use SRTP";
 911                 break;
 912
 913                 case TLSEXT_TYPE_heartbeat:
 914                 extname = "heartbeat";
 915                 break;
 916
 917                 case TLSEXT_TYPE_session_ticket:
 918                 extname = "session ticket";
 919                 break;
 920
 921                 case TLSEXT_TYPE_renegotiate:
 922                 extname = "renegotiation info";
 923                 break;
 924
 925 #ifdef TLSEXT_TYPE_opaque_prf_input
 926                 case TLSEXT_TYPE_opaque_prf_input:
 927                 extname = "opaque PRF input";
 928                 break;
 929 #endif
 930 #ifdef TLSEXT_TYPE_next_proto_neg
 931                 case TLSEXT_TYPE_next_proto_neg:
 932                 extname = "next protocol";
 933                 break;
 934 #endif
 935
 936                 default:
 937                 extname = "unknown";
 938                 break;
 939
 940                 }
 941
 942         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
 943                         client_server ? "server": "client",
 944                         extname, type, len);
 945         BIO_dump(bio, (char *)data, len);
 946         (void)BIO_flush(bio);
 947         }
 948
 949 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
 950         {
 951         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 952         unsigned int length, resultlength;
 953         union {
 954                 struct sockaddr sa;
 955                 struct sockaddr_in s4;
 956 #if OPENSSL_USE_IPV6
 957                 struct sockaddr_in6 s6;
 958 #endif
 959         } peer;
 960
 961         /* Initialize a random secret */
 962         if (!cookie_initialized)
 963                 {
 964                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
 965                         {
 966                         BIO_printf(bio_err,"error setting random cookie secret\n");
 967                         return 0;
 968                         }
 969                 cookie_initialized = 1;
 970                 }
 971
 972         /* Read peer information */
 973         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
 974
 975         /* Create buffer with peer's address and port */
 976         length = 0;
 977         switch (peer.sa.sa_family)
 978                 {
 979         case AF_INET:
 980                 length += sizeof(struct in_addr);
 981                 length += sizeof(peer.s4.sin_port);
 982                 break;
 983 #if OPENSSL_USE_IPV6
 984         case AF_INET6:
 985                 length += sizeof(struct in6_addr);
 986                 length += sizeof(peer.s6.sin6_port);
 987                 break;
 988 #endif
 989         default:
 990                 OPENSSL_assert(0);
 991                 break;
 992                 }
 993         buffer = OPENSSL_malloc(length);
 994
 995         if (buffer == NULL)
 996                 {
 997                 BIO_printf(bio_err,"out of memory\n");
 998                 return 0;
 999                 }
1000
1001         switch (peer.sa.sa_family)
1002                 {
1003         case AF_INET:
1004                 memcpy(buffer,
1005                        &peer.s4.sin_port,
1006                        sizeof(peer.s4.sin_port));
1007                 memcpy(buffer + sizeof(peer.s4.sin_port),
1008                        &peer.s4.sin_addr,
1009                        sizeof(struct in_addr));
1010                 break;
1011 #if OPENSSL_USE_IPV6
1012         case AF_INET6:
1013                 memcpy(buffer,
1014                        &peer.s6.sin6_port,
1015                        sizeof(peer.s6.sin6_port));
1016                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1017                        &peer.s6.sin6_addr,
1018                        sizeof(struct in6_addr));
1019                 break;
1020 #endif
1021         default:
1022                 OPENSSL_assert(0);
1023                 break;
1024                 }
1025
1026         /* Calculate HMAC of buffer using the secret */
1027         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1028              buffer, length, result, &resultlength);
1029         OPENSSL_free(buffer);
1030
1031         memcpy(cookie, result, resultlength);
1032         *cookie_len = resultlength;
1033
1034         return 1;
1035         }
1036
1037 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1038         {
1039         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1040         unsigned int length, resultlength;
1041         union {
1042                 struct sockaddr sa;
1043                 struct sockaddr_in s4;
1044 #if OPENSSL_USE_IPV6
1045                 struct sockaddr_in6 s6;
1046 #endif
1047         } peer;
1048
1049         /* If secret isn't initialized yet, the cookie can't be valid */
1050         if (!cookie_initialized)
1051                 return 0;
1052
1053         /* Read peer information */
1054         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1055
1056         /* Create buffer with peer's address and port */
1057         length = 0;
1058         switch (peer.sa.sa_family)
1059                 {
1060         case AF_INET:
1061                 length += sizeof(struct in_addr);
1062                 length += sizeof(peer.s4.sin_port);
1063                 break;
1064 #if OPENSSL_USE_IPV6
1065         case AF_INET6:
1066                 length += sizeof(struct in6_addr);
1067                 length += sizeof(peer.s6.sin6_port);
1068                 break;
1069 #endif
1070         default:
1071                 OPENSSL_assert(0);
1072                 break;
1073                 }
1074         buffer = OPENSSL_malloc(length);
1075
1076         if (buffer == NULL)
1077                 {
1078                 BIO_printf(bio_err,"out of memory\n");
1079                 return 0;
1080                 }
1081
1082         switch (peer.sa.sa_family)
1083                 {
1084         case AF_INET:
1085                 memcpy(buffer,
1086                        &peer.s4.sin_port,
1087                        sizeof(peer.s4.sin_port));
1088                 memcpy(buffer + sizeof(peer.s4.sin_port),
1089                        &peer.s4.sin_addr,
1090                        sizeof(struct in_addr));
1091                 break;
1092 #if OPENSSL_USE_IPV6
1093         case AF_INET6:
1094                 memcpy(buffer,
1095                        &peer.s6.sin6_port,
1096                        sizeof(peer.s6.sin6_port));
1097                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1098                        &peer.s6.sin6_addr,
1099                        sizeof(struct in6_addr));
1100                 break;
1101 #endif
1102         default:
1103                 OPENSSL_assert(0);
1104                 break;
1105                 }
1106
1107         /* Calculate HMAC of buffer using the secret */
1108         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1109              buffer, length, result, &resultlength);
1110         OPENSSL_free(buffer);
1111
1112         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1113                 return 1;
1114
1115         return 0;
1116         }
1117
1118 /* Example of extended certificate handling. Where the standard support
1119  * of one certificate per algorithm is not sufficient an application
1120  * can decide which certificate(s) to use at runtime based on whatever
1121  * criteria it deems appropriate.
1122  */
1123
1124 /* Linked list of certificates, keys and chains */
1125 struct  ssl_excert_st
1126         {
1127         int certform;
1128         const char *certfile;
1129         int keyform;
1130         const char *keyfile;
1131         const char *chainfile;
1132         X509 *cert;
1133         EVP_PKEY *key;
1134         STACK_OF(X509) *chain;
1135         int build_chain;
1136         struct ssl_excert_st *next, *prev;
1137         };
1138
1139 /* Very basic selection callback: just use any certificate chain
1140  * reported as valid. More sophisticated could prioritise according
1141  * to local policy.
1142  */
1143 static int set_cert_cb(SSL *ssl, void *arg)
1144         {
1145         SSL_EXCERT *exc = arg;
1146         SSL_certs_clear(ssl);
1147
1148         if (!exc)
1149                 return 1;
1150
1151         /* Go to end of list and traverse backwards since we prepend
1152          * newer entries this retains the original order.
1153          */
1154         while (exc->next)
1155                 exc = exc->next;
1156
1157         while(exc)
1158                 {
1159                 if (SSL_check_chain(ssl, exc->cert, exc->key, exc->chain))
1160                         {
1161                         SSL_use_certificate(ssl, exc->cert);
1162                         SSL_use_PrivateKey(ssl, exc->key);
1163                         /* NB: we wouldn't normally do this as it is
1164                          * not efficient building chains on each connection
1165                          * better to cache the chain in advance.
1166                          */
1167                         if (exc->build_chain)
1168                                 {
1169                                 if (!SSL_build_cert_chain(ssl, 0))
1170                                         return 0;
1171                                 }
1172                         else if (exc->chain)
1173                                 SSL_set1_chain(ssl, exc->chain);
1174                         }
1175                 exc = exc->prev;
1176                 }
1177         return 1;
1178         }
1179
1180 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1181         {
1182         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1183         }
1184
1185 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1186         {
1187         SSL_EXCERT *exc;
1188         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1189         if (!exc)
1190                 return 0;
1191         exc->certfile = NULL;
1192         exc->keyfile = NULL;
1193         exc->chainfile = NULL;
1194         exc->cert = NULL;
1195         exc->key = NULL;
1196         exc->chain = NULL;
1197         exc->prev = NULL;
1198         exc->build_chain = 0;
1199
1200         exc->next = *pexc;
1201         *pexc = exc;
1202
1203         if (exc->next)
1204                 {
1205                 exc->certform = exc->next->certform;
1206                 exc->keyform = exc->next->keyform;
1207                 exc->next->prev = exc;
1208                 }
1209         else
1210                 {
1211                 exc->certform = FORMAT_PEM;
1212                 exc->keyform = FORMAT_PEM;
1213                 }
1214         return 1;
1215
1216         }
1217
1218 void ssl_excert_free(SSL_EXCERT *exc)
1219         {
1220         SSL_EXCERT *curr;
1221         while (exc)
1222                 {
1223                 if (exc->cert)
1224                         X509_free(exc->cert);
1225                 if (exc->key)
1226                         EVP_PKEY_free(exc->key);
1227                 if (exc->chain)
1228                         sk_X509_pop_free(exc->chain, X509_free);
1229                 curr = exc;
1230                 exc = exc->next;
1231                 OPENSSL_free(curr);
1232                 }
1233         }
1234
1235 int load_excert(SSL_EXCERT **pexc, BIO *err)
1236         {
1237         SSL_EXCERT *exc = *pexc;
1238         if (!exc)
1239                 return 1;
1240         /* If nothing in list, free and set to NULL */
1241         if (!exc->certfile && !exc->next)
1242                 {
1243                 ssl_excert_free(exc);
1244                 *pexc = NULL;
1245                 return 1;
1246                 }
1247         for(; exc; exc=exc->next)
1248                 {
1249                 if (!exc->certfile)
1250                         {
1251                         BIO_printf(err, "Missing filename\n");
1252                         return 0;
1253                         }
1254                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1255                                         NULL, NULL, "Server Certificate");
1256                 if (!exc->cert)
1257                         return 0;
1258                 if (exc->keyfile)
1259                         exc->keyfile = exc->certfile;
1260                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1261                                         NULL, NULL, "Server Certificate");
1262                 if (!exc->key)
1263                         return 0;
1264                 if (exc->chainfile)
1265                         {
1266                         exc->chain = load_certs(err,
1267                                                 exc->chainfile, FORMAT_PEM,
1268                                                 NULL, NULL,
1269                                                 "Server Chain");
1270                         if (!exc->chainfile)
1271                                 return 0;
1272                         }
1273                 }
1274         return 1;
1275         }
1276
1277
1278 int args_excert(char ***pargs, int *pargc,
1279                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1280         {
1281         char *arg = **pargs, *argn = (*pargs)[1];
1282         SSL_EXCERT *exc = *pexc;
1283         int narg = 2;
1284         if (!exc)
1285                 {
1286                 if (ssl_excert_prepend(&exc))
1287                         *pexc = exc;
1288                 else
1289                         {
1290                         BIO_printf(err, "Error initialising xcert\n");
1291                         *badarg = 1;
1292                         goto err;
1293                         }
1294                 }
1295         if (strcmp(arg, "-xcert") == 0)
1296                 {
1297                 if (!argn)
1298                         {
1299                         *badarg = 1;
1300                         return 1;
1301                         }
1302                 if (exc->certfile && !ssl_excert_prepend(&exc))
1303                         {
1304                         BIO_printf(err, "Error adding xcert\n");
1305                         *badarg = 1;
1306                         goto err;
1307                         }
1308                 exc->certfile = argn;
1309                 }
1310         else if (strcmp(arg,"-xkey") == 0)
1311                 {
1312                 if (!argn)
1313                         {
1314                         *badarg = 1;
1315                         return 1;
1316                         }
1317                 if (exc->keyfile)
1318                         {
1319                         BIO_printf(err, "Key already specified\n");
1320                         *badarg = 1;
1321                         return 1;
1322                         }
1323                 exc->keyfile = argn;
1324                 }
1325         else if (strcmp(arg,"-xchain") == 0)
1326                 {
1327                 if (!argn)
1328                         {
1329                         *badarg = 1;
1330                         return 1;
1331                         }
1332                 if (exc->chainfile)
1333                         {
1334                         BIO_printf(err, "Chain already specified\n");
1335                         *badarg = 1;
1336                         return 1;
1337                         }
1338                 exc->chainfile = argn;
1339                 }
1340         else if (strcmp(arg,"-xchain_build") == 0)
1341                 {
1342                 narg = 1;
1343                 exc->build_chain = 1;
1344                 }
1345         else if (strcmp(arg,"-xcertform") == 0)
1346                 {
1347                 if (!argn)
1348                         {
1349                         *badarg = 1;
1350                         goto err;
1351                         }
1352                 exc->certform = str2fmt(argn);
1353                 }
1354         else if (strcmp(arg,"-xkeyform") == 0)
1355                 {
1356                 if (!argn)
1357                         {
1358                         *badarg = 1;
1359                         goto err;
1360                         }
1361                 exc->keyform = str2fmt(argn);
1362                 }
1363         else
1364                 return 0;
1365
1366         (*pargs) += narg;
1367
1368         if (pargc)
1369                 *pargc -= narg;
1370
1371         *pexc = exc;
1372
1373         return 1;
1374
1375         err:
1376         ERR_print_errors(err);
1377         ssl_excert_free(exc);
1378         *pexc = NULL;
1379         return 1;
1380         }
1381