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         int mdnid;
 413         if (!SSL_is_server(s))
 414                 ssl_print_client_cert_types(out, s);
 415         do_print_sigalgs(out, s, 0);
 416         do_print_sigalgs(out, s, 1);
 417         if (SSL_get_peer_signature_nid(s, &mdnid))
 418                 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
 419         return 1;
 420         }
 421
 422 int ssl_print_curves(BIO *out, SSL *s)
 423         {
 424         int i, ncurves, *curves, nid;
 425         const char *cname;
 426         ncurves = SSL_get1_curves(s, NULL);
 427         if (ncurves <= 0)
 428                 return 1;
 429         curves = OPENSSL_malloc(ncurves * sizeof(int));
 430         SSL_get1_curves(s, curves);
 431
 432         BIO_puts(out, "Supported Elliptic Curves: ");
 433         for (i = 0; i < ncurves; i++)
 434                 {
 435                 if (i)
 436                         BIO_puts(out, ":");
 437                 nid = curves[i];
 438                 /* If unrecognised print out hex version */
 439                 if (nid & TLSEXT_nid_unknown)
 440                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 441                 else
 442                         {
 443                         /* Use NIST name for curve if it exists */
 444                         cname = EC_curve_nid2nist(nid);
 445                         if (!cname)
 446                                 cname = OBJ_nid2sn(nid);
 447                         BIO_printf(out, "%s", cname);
 448                         }
 449                 }
 450         BIO_puts(out, "\nShared Elliptic curves: ");
 451         OPENSSL_free(curves);
 452         ncurves = SSL_get_shared_curve(s, -1);
 453         for (i = 0; i < ncurves; i++)
 454                 {
 455                 if (i)
 456                         BIO_puts(out, ":");
 457                 nid = SSL_get_shared_curve(s, i);
 458                 cname = EC_curve_nid2nist(nid);
 459                 if (!cname)
 460                         cname = OBJ_nid2sn(nid);
 461                 BIO_printf(out, "%s", cname);
 462                 }
 463         if (ncurves == 0)
 464                 BIO_puts(out, "NONE");
 465         BIO_puts(out, "\n");
 466         return 1;
 467         }
 468
 469 int ssl_print_tmp_key(BIO *out, SSL *s)
 470         {
 471         EVP_PKEY *key;
 472         if (!SSL_get_server_tmp_key(s, &key))
 473                 return 1;
 474         BIO_puts(out, "Server Temp Key: ");
 475         switch (EVP_PKEY_id(key))
 476                 {
 477         case EVP_PKEY_RSA:
 478                 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
 479                 break;
 480
 481         case EVP_PKEY_DH:
 482                 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
 483                 break;
 484
 485         case EVP_PKEY_EC:
 486                         {
 487                         EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
 488                         int nid;
 489                         const char *cname;
 490                         nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
 491                         EC_KEY_free(ec);
 492                         cname = EC_curve_nid2nist(nid);
 493                         if (!cname)
 494                                 cname = OBJ_nid2sn(nid);
 495                         BIO_printf(out, "ECDH, %s, %d bits\n",
 496                                                 cname, EVP_PKEY_bits(key));
 497                         }
 498                 }
 499         EVP_PKEY_free(key);
 500         return 1;
 501         }
 502
 503
 504 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 505                                    int argi, long argl, long ret)
 506         {
 507         BIO *out;
 508
 509         out=(BIO *)BIO_get_callback_arg(bio);
 510         if (out == NULL) return(ret);
 511
 512         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 513                 {
 514                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 515                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 516                 BIO_dump(out,argp,(int)ret);
 517                 return(ret);
 518                 }
 519         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 520                 {
 521                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 522                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 523                 BIO_dump(out,argp,(int)ret);
 524                 }
 525         return(ret);
 526         }
 527
 528 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 529         {
 530         const char *str;
 531         int w;
 532
 533         w=where& ~SSL_ST_MASK;
 534
 535         if (w & SSL_ST_CONNECT) str="SSL_connect";
 536         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 537         else str="undefined";
 538
 539         if (where & SSL_CB_LOOP)
 540                 {
 541                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 542                 }
 543         else if (where & SSL_CB_ALERT)
 544                 {
 545                 str=(where & SSL_CB_READ)?"read":"write";
 546                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 547                         str,
 548                         SSL_alert_type_string_long(ret),
 549                         SSL_alert_desc_string_long(ret));
 550                 }
 551         else if (where & SSL_CB_EXIT)
 552                 {
 553                 if (ret == 0)
 554                         BIO_printf(bio_err,"%s:failed in %s\n",
 555                                 str,SSL_state_string_long(s));
 556                 else if (ret < 0)
 557                         {
 558                         BIO_printf(bio_err,"%s:error in %s\n",
 559                                 str,SSL_state_string_long(s));
 560                         }
 561                 }
 562         }
 563
 564
 565 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 566         {
 567         BIO *bio = arg;
 568         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 569
 570         str_write_p = write_p ? ">>>" : "<<<";
 571
 572         switch (version)
 573                 {
 574         case SSL2_VERSION:
 575                 str_version = "SSL 2.0";
 576                 break;
 577         case SSL3_VERSION:
 578                 str_version = "SSL 3.0 ";
 579                 break;
 580         case TLS1_VERSION:
 581                 str_version = "TLS 1.0 ";
 582                 break;
 583         case TLS1_1_VERSION:
 584                 str_version = "TLS 1.1 ";
 585                 break;
 586         case TLS1_2_VERSION:
 587                 str_version = "TLS 1.2 ";
 588                 break;
 589         case DTLS1_VERSION:
 590                 str_version = "DTLS 1.0 ";
 591                 break;
 592         case DTLS1_BAD_VER:
 593                 str_version = "DTLS 1.0 (bad) ";
 594                 break;
 595         default:
 596                 str_version = "???";
 597                 }
 598
 599         if (version == SSL2_VERSION)
 600                 {
 601                 str_details1 = "???";
 602
 603                 if (len > 0)
 604                         {
 605                         switch (((const unsigned char*)buf)[0])
 606                                 {
 607                                 case 0:
 608                                         str_details1 = ", ERROR:";
 609                                         str_details2 = " ???";
 610                                         if (len >= 3)
 611                                                 {
 612                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 613
 614                                                 switch (err)
 615                                                         {
 616                                                 case 0x0001:
 617                                                         str_details2 = " NO-CIPHER-ERROR";
 618                                                         break;
 619                                                 case 0x0002:
 620                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 621                                                         break;
 622                                                 case 0x0004:
 623                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 624                                                         break;
 625                                                 case 0x0006:
 626                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 627                                                         break;
 628                                                         }
 629                                                 }
 630
 631                                         break;
 632                                 case 1:
 633                                         str_details1 = ", CLIENT-HELLO";
 634                                         break;
 635                                 case 2:
 636                                         str_details1 = ", CLIENT-MASTER-KEY";
 637                                         break;
 638                                 case 3:
 639                                         str_details1 = ", CLIENT-FINISHED";
 640                                         break;
 641                                 case 4:
 642                                         str_details1 = ", SERVER-HELLO";
 643                                         break;
 644                                 case 5:
 645                                         str_details1 = ", SERVER-VERIFY";
 646                                         break;
 647                                 case 6:
 648                                         str_details1 = ", SERVER-FINISHED";
 649                                         break;
 650                                 case 7:
 651                                         str_details1 = ", REQUEST-CERTIFICATE";
 652                                         break;
 653                                 case 8:
 654                                         str_details1 = ", CLIENT-CERTIFICATE";
 655                                         break;
 656                                 }
 657                         }
 658                 }
 659
 660         if (version == SSL3_VERSION ||
 661             version == TLS1_VERSION ||
 662             version == TLS1_1_VERSION ||
 663             version == TLS1_2_VERSION ||
 664             version == DTLS1_VERSION ||
 665             version == DTLS1_BAD_VER)
 666                 {
 667                 switch (content_type)
 668                         {
 669                 case 20:
 670                         str_content_type = "ChangeCipherSpec";
 671                         break;
 672                 case 21:
 673                         str_content_type = "Alert";
 674                         break;
 675                 case 22:
 676                         str_content_type = "Handshake";
 677                         break;
 678                         }
 679
 680                 if (content_type == 21) /* Alert */
 681                         {
 682                         str_details1 = ", ???";
 683
 684                         if (len == 2)
 685                                 {
 686                                 switch (((const unsigned char*)buf)[0])
 687                                         {
 688                                 case 1:
 689                                         str_details1 = ", warning";
 690                                         break;
 691                                 case 2:
 692                                         str_details1 = ", fatal";
 693                                         break;
 694                                         }
 695
 696                                 str_details2 = " ???";
 697                                 switch (((const unsigned char*)buf)[1])
 698                                         {
 699                                 case 0:
 700                                         str_details2 = " close_notify";
 701                                         break;
 702                                 case 10:
 703                                         str_details2 = " unexpected_message";
 704                                         break;
 705                                 case 20:
 706                                         str_details2 = " bad_record_mac";
 707                                         break;
 708                                 case 21:
 709                                         str_details2 = " decryption_failed";
 710                                         break;
 711                                 case 22:
 712                                         str_details2 = " record_overflow";
 713                                         break;
 714                                 case 30:
 715                                         str_details2 = " decompression_failure";
 716                                         break;
 717                                 case 40:
 718                                         str_details2 = " handshake_failure";
 719                                         break;
 720                                 case 42:
 721                                         str_details2 = " bad_certificate";
 722                                         break;
 723                                 case 43:
 724                                         str_details2 = " unsupported_certificate";
 725                                         break;
 726                                 case 44:
 727                                         str_details2 = " certificate_revoked";
 728                                         break;
 729                                 case 45:
 730                                         str_details2 = " certificate_expired";
 731                                         break;
 732                                 case 46:
 733                                         str_details2 = " certificate_unknown";
 734                                         break;
 735                                 case 47:
 736                                         str_details2 = " illegal_parameter";
 737                                         break;
 738                                 case 48:
 739                                         str_details2 = " unknown_ca";
 740                                         break;
 741                                 case 49:
 742                                         str_details2 = " access_denied";
 743                                         break;
 744                                 case 50:
 745                                         str_details2 = " decode_error";
 746                                         break;
 747                                 case 51:
 748                                         str_details2 = " decrypt_error";
 749                                         break;
 750                                 case 60:
 751                                         str_details2 = " export_restriction";
 752                                         break;
 753                                 case 70:
 754                                         str_details2 = " protocol_version";
 755                                         break;
 756                                 case 71:
 757                                         str_details2 = " insufficient_security";
 758                                         break;
 759                                 case 80:
 760                                         str_details2 = " internal_error";
 761                                         break;
 762                                 case 90:
 763                                         str_details2 = " user_canceled";
 764                                         break;
 765                                 case 100:
 766                                         str_details2 = " no_renegotiation";
 767                                         break;
 768                                 case 110:
 769                                         str_details2 = " unsupported_extension";
 770                                         break;
 771                                 case 111:
 772                                         str_details2 = " certificate_unobtainable";
 773                                         break;
 774                                 case 112:
 775                                         str_details2 = " unrecognized_name";
 776                                         break;
 777                                 case 113:
 778                                         str_details2 = " bad_certificate_status_response";
 779                                         break;
 780                                 case 114:
 781                                         str_details2 = " bad_certificate_hash_value";
 782                                         break;
 783                                 case 115:
 784                                         str_details2 = " unknown_psk_identity";
 785                                         break;
 786                                         }
 787                                 }
 788                         }
 789
 790                 if (content_type == 22) /* Handshake */
 791                         {
 792                         str_details1 = "???";
 793
 794                         if (len > 0)
 795                                 {
 796                                 switch (((const unsigned char*)buf)[0])
 797                                         {
 798                                 case 0:
 799                                         str_details1 = ", HelloRequest";
 800                                         break;
 801                                 case 1:
 802                                         str_details1 = ", ClientHello";
 803                                         break;
 804                                 case 2:
 805                                         str_details1 = ", ServerHello";
 806                                         break;
 807                                 case 3:
 808                                         str_details1 = ", HelloVerifyRequest";
 809                                         break;
 810                                 case 11:
 811                                         str_details1 = ", Certificate";
 812                                         break;
 813                                 case 12:
 814                                         str_details1 = ", ServerKeyExchange";
 815                                         break;
 816                                 case 13:
 817                                         str_details1 = ", CertificateRequest";
 818                                         break;
 819                                 case 14:
 820                                         str_details1 = ", ServerHelloDone";
 821                                         break;
 822                                 case 15:
 823                                         str_details1 = ", CertificateVerify";
 824                                         break;
 825                                 case 16:
 826                                         str_details1 = ", ClientKeyExchange";
 827                                         break;
 828                                 case 20:
 829                                         str_details1 = ", Finished";
 830                                         break;
 831                                         }
 832                                 }
 833                         }
 834
 835 #ifndef OPENSSL_NO_HEARTBEATS
 836                 if (content_type == 24) /* Heartbeat */
 837                         {
 838                         str_details1 = ", Heartbeat";
 839
 840                         if (len > 0)
 841                                 {
 842                                 switch (((const unsigned char*)buf)[0])
 843                                         {
 844                                 case 1:
 845                                         str_details1 = ", HeartbeatRequest";
 846                                         break;
 847                                 case 2:
 848                                         str_details1 = ", HeartbeatResponse";
 849                                         break;
 850                                         }
 851                                 }
 852                         }
 853 #endif
 854                 }
 855
 856         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);
 857
 858         if (len > 0)
 859                 {
 860                 size_t num, i;
 861
 862                 BIO_printf(bio, "   ");
 863                 num = len;
 864 #if 0
 865                 if (num > 16)
 866                         num = 16;
 867 #endif
 868                 for (i = 0; i < num; i++)
 869                         {
 870                         if (i % 16 == 0 && i > 0)
 871                                 BIO_printf(bio, "\n   ");
 872                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 873                         }
 874                 if (i < len)
 875                         BIO_printf(bio, " ...");
 876                 BIO_printf(bio, "\n");
 877                 }
 878         (void)BIO_flush(bio);
 879         }
 880
 881 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 882                                         unsigned char *data, int len,
 883                                         void *arg)
 884         {
 885         BIO *bio = arg;
 886         char *extname;
 887
 888         switch(type)
 889                 {
 890                 case TLSEXT_TYPE_server_name:
 891                 extname = "server name";
 892                 break;
 893
 894                 case TLSEXT_TYPE_max_fragment_length:
 895                 extname = "max fragment length";
 896                 break;
 897
 898                 case TLSEXT_TYPE_client_certificate_url:
 899                 extname = "client certificate URL";
 900                 break;
 901
 902                 case TLSEXT_TYPE_trusted_ca_keys:
 903                 extname = "trusted CA keys";
 904                 break;
 905
 906                 case TLSEXT_TYPE_truncated_hmac:
 907                 extname = "truncated HMAC";
 908                 break;
 909
 910                 case TLSEXT_TYPE_status_request:
 911                 extname = "status request";
 912                 break;
 913
 914                 case TLSEXT_TYPE_user_mapping:
 915                 extname = "user mapping";
 916                 break;
 917
 918                 case TLSEXT_TYPE_client_authz:
 919                 extname = "client authz";
 920                 break;
 921
 922                 case TLSEXT_TYPE_server_authz:
 923                 extname = "server authz";
 924                 break;
 925
 926                 case TLSEXT_TYPE_cert_type:
 927                 extname = "cert type";
 928                 break;
 929
 930                 case TLSEXT_TYPE_elliptic_curves:
 931                 extname = "elliptic curves";
 932                 break;
 933
 934                 case TLSEXT_TYPE_ec_point_formats:
 935                 extname = "EC point formats";
 936                 break;
 937
 938                 case TLSEXT_TYPE_srp:
 939                 extname = "SRP";
 940                 break;
 941
 942                 case TLSEXT_TYPE_signature_algorithms:
 943                 extname = "signature algorithms";
 944                 break;
 945
 946                 case TLSEXT_TYPE_use_srtp:
 947                 extname = "use SRTP";
 948                 break;
 949
 950                 case TLSEXT_TYPE_heartbeat:
 951                 extname = "heartbeat";
 952                 break;
 953
 954                 case TLSEXT_TYPE_session_ticket:
 955                 extname = "session ticket";
 956                 break;
 957
 958                 case TLSEXT_TYPE_renegotiate:
 959                 extname = "renegotiation info";
 960                 break;
 961
 962 #ifdef TLSEXT_TYPE_opaque_prf_input
 963                 case TLSEXT_TYPE_opaque_prf_input:
 964                 extname = "opaque PRF input";
 965                 break;
 966 #endif
 967 #ifdef TLSEXT_TYPE_next_proto_neg
 968                 case TLSEXT_TYPE_next_proto_neg:
 969                 extname = "next protocol";
 970                 break;
 971 #endif
 972
 973                 default:
 974                 extname = "unknown";
 975                 break;
 976
 977                 }
 978
 979         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
 980                         client_server ? "server": "client",
 981                         extname, type, len);
 982         BIO_dump(bio, (char *)data, len);
 983         (void)BIO_flush(bio);
 984         }
 985
 986 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
 987         {
 988         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
 989         unsigned int length, resultlength;
 990         union {
 991                 struct sockaddr sa;
 992                 struct sockaddr_in s4;
 993 #if OPENSSL_USE_IPV6
 994                 struct sockaddr_in6 s6;
 995 #endif
 996         } peer;
 997
 998         /* Initialize a random secret */
 999         if (!cookie_initialized)
1000                 {
1001                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1002                         {
1003                         BIO_printf(bio_err,"error setting random cookie secret\n");
1004                         return 0;
1005                         }
1006                 cookie_initialized = 1;
1007                 }
1008
1009         /* Read peer information */
1010         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1011
1012         /* Create buffer with peer's address and port */
1013         length = 0;
1014         switch (peer.sa.sa_family)
1015                 {
1016         case AF_INET:
1017                 length += sizeof(struct in_addr);
1018                 length += sizeof(peer.s4.sin_port);
1019                 break;
1020 #if OPENSSL_USE_IPV6
1021         case AF_INET6:
1022                 length += sizeof(struct in6_addr);
1023                 length += sizeof(peer.s6.sin6_port);
1024                 break;
1025 #endif
1026         default:
1027                 OPENSSL_assert(0);
1028                 break;
1029                 }
1030         buffer = OPENSSL_malloc(length);
1031
1032         if (buffer == NULL)
1033                 {
1034                 BIO_printf(bio_err,"out of memory\n");
1035                 return 0;
1036                 }
1037
1038         switch (peer.sa.sa_family)
1039                 {
1040         case AF_INET:
1041                 memcpy(buffer,
1042                        &peer.s4.sin_port,
1043                        sizeof(peer.s4.sin_port));
1044                 memcpy(buffer + sizeof(peer.s4.sin_port),
1045                        &peer.s4.sin_addr,
1046                        sizeof(struct in_addr));
1047                 break;
1048 #if OPENSSL_USE_IPV6
1049         case AF_INET6:
1050                 memcpy(buffer,
1051                        &peer.s6.sin6_port,
1052                        sizeof(peer.s6.sin6_port));
1053                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1054                        &peer.s6.sin6_addr,
1055                        sizeof(struct in6_addr));
1056                 break;
1057 #endif
1058         default:
1059                 OPENSSL_assert(0);
1060                 break;
1061                 }
1062
1063         /* Calculate HMAC of buffer using the secret */
1064         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1065              buffer, length, result, &resultlength);
1066         OPENSSL_free(buffer);
1067
1068         memcpy(cookie, result, resultlength);
1069         *cookie_len = resultlength;
1070
1071         return 1;
1072         }
1073
1074 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1075         {
1076         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1077         unsigned int length, resultlength;
1078         union {
1079                 struct sockaddr sa;
1080                 struct sockaddr_in s4;
1081 #if OPENSSL_USE_IPV6
1082                 struct sockaddr_in6 s6;
1083 #endif
1084         } peer;
1085
1086         /* If secret isn't initialized yet, the cookie can't be valid */
1087         if (!cookie_initialized)
1088                 return 0;
1089
1090         /* Read peer information */
1091         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1092
1093         /* Create buffer with peer's address and port */
1094         length = 0;
1095         switch (peer.sa.sa_family)
1096                 {
1097         case AF_INET:
1098                 length += sizeof(struct in_addr);
1099                 length += sizeof(peer.s4.sin_port);
1100                 break;
1101 #if OPENSSL_USE_IPV6
1102         case AF_INET6:
1103                 length += sizeof(struct in6_addr);
1104                 length += sizeof(peer.s6.sin6_port);
1105                 break;
1106 #endif
1107         default:
1108                 OPENSSL_assert(0);
1109                 break;
1110                 }
1111         buffer = OPENSSL_malloc(length);
1112
1113         if (buffer == NULL)
1114                 {
1115                 BIO_printf(bio_err,"out of memory\n");
1116                 return 0;
1117                 }
1118
1119         switch (peer.sa.sa_family)
1120                 {
1121         case AF_INET:
1122                 memcpy(buffer,
1123                        &peer.s4.sin_port,
1124                        sizeof(peer.s4.sin_port));
1125                 memcpy(buffer + sizeof(peer.s4.sin_port),
1126                        &peer.s4.sin_addr,
1127                        sizeof(struct in_addr));
1128                 break;
1129 #if OPENSSL_USE_IPV6
1130         case AF_INET6:
1131                 memcpy(buffer,
1132                        &peer.s6.sin6_port,
1133                        sizeof(peer.s6.sin6_port));
1134                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1135                        &peer.s6.sin6_addr,
1136                        sizeof(struct in6_addr));
1137                 break;
1138 #endif
1139         default:
1140                 OPENSSL_assert(0);
1141                 break;
1142                 }
1143
1144         /* Calculate HMAC of buffer using the secret */
1145         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1146              buffer, length, result, &resultlength);
1147         OPENSSL_free(buffer);
1148
1149         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1150                 return 1;
1151
1152         return 0;
1153         }
1154
1155 /* Example of extended certificate handling. Where the standard support
1156  * of one certificate per algorithm is not sufficient an application
1157  * can decide which certificate(s) to use at runtime based on whatever
1158  * criteria it deems appropriate.
1159  */
1160
1161 /* Linked list of certificates, keys and chains */
1162 struct  ssl_excert_st
1163         {
1164         int certform;
1165         const char *certfile;
1166         int keyform;
1167         const char *keyfile;
1168         const char *chainfile;
1169         X509 *cert;
1170         EVP_PKEY *key;
1171         STACK_OF(X509) *chain;
1172         int build_chain;
1173         struct ssl_excert_st *next, *prev;
1174         };
1175
1176 struct chain_flags
1177         {
1178         int flag;
1179         const char *name;
1180         };
1181
1182 struct chain_flags chain_flags_list[] =
1183         {
1184                 {CERT_PKEY_VALID, "Overall Validity"},
1185                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1186                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1187                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1188                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1189                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1190                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1191                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1192                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1193                 {0, NULL}
1194         };
1195
1196
1197 static void print_chain_flags(BIO *out, int flags)
1198         {
1199         struct chain_flags *ctmp = chain_flags_list;
1200         while(ctmp->name)
1201                 {
1202                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1203                                 flags & ctmp->flag ? "OK" : "NOT OK");
1204                 ctmp++;
1205                 }
1206         }
1207
1208 /* Very basic selection callback: just use any certificate chain
1209  * reported as valid. More sophisticated could prioritise according
1210  * to local policy.
1211  */
1212 static int set_cert_cb(SSL *ssl, void *arg)
1213         {
1214         int i, rv;
1215         SSL_EXCERT *exc = arg;
1216         SSL_certs_clear(ssl);
1217
1218         if (!exc)
1219                 return 1;
1220
1221         /* Go to end of list and traverse backwards since we prepend
1222          * newer entries this retains the original order.
1223          */
1224         while (exc->next)
1225                 exc = exc->next;
1226
1227         i = 0;
1228
1229         while(exc)
1230                 {
1231                 i++;
1232                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1233                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1234                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1235                                                         XN_FLAG_ONELINE);
1236                 BIO_puts(bio_err, "\n");
1237
1238                 print_chain_flags(bio_err, rv);
1239                 if (rv & CERT_PKEY_VALID)
1240                         {
1241                         SSL_use_certificate(ssl, exc->cert);
1242                         SSL_use_PrivateKey(ssl, exc->key);
1243                         /* NB: we wouldn't normally do this as it is
1244                          * not efficient building chains on each connection
1245                          * better to cache the chain in advance.
1246                          */
1247                         if (exc->build_chain)
1248                                 {
1249                                 if (!SSL_build_cert_chain(ssl, 0))
1250                                         return 0;
1251                                 }
1252                         else if (exc->chain)
1253                                 SSL_set1_chain(ssl, exc->chain);
1254                         }
1255                 exc = exc->prev;
1256                 }
1257         return 1;
1258         }
1259
1260 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1261         {
1262         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1263         }
1264
1265 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1266         {
1267         SSL_EXCERT *exc;
1268         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1269         if (!exc)
1270                 return 0;
1271         exc->certfile = NULL;
1272         exc->keyfile = NULL;
1273         exc->chainfile = NULL;
1274         exc->cert = NULL;
1275         exc->key = NULL;
1276         exc->chain = NULL;
1277         exc->prev = NULL;
1278         exc->build_chain = 0;
1279
1280         exc->next = *pexc;
1281         *pexc = exc;
1282
1283         if (exc->next)
1284                 {
1285                 exc->certform = exc->next->certform;
1286                 exc->keyform = exc->next->keyform;
1287                 exc->next->prev = exc;
1288                 }
1289         else
1290                 {
1291                 exc->certform = FORMAT_PEM;
1292                 exc->keyform = FORMAT_PEM;
1293                 }
1294         return 1;
1295
1296         }
1297
1298 void ssl_excert_free(SSL_EXCERT *exc)
1299         {
1300         SSL_EXCERT *curr;
1301         while (exc)
1302                 {
1303                 if (exc->cert)
1304                         X509_free(exc->cert);
1305                 if (exc->key)
1306                         EVP_PKEY_free(exc->key);
1307                 if (exc->chain)
1308                         sk_X509_pop_free(exc->chain, X509_free);
1309                 curr = exc;
1310                 exc = exc->next;
1311                 OPENSSL_free(curr);
1312                 }
1313         }
1314
1315 int load_excert(SSL_EXCERT **pexc, BIO *err)
1316         {
1317         SSL_EXCERT *exc = *pexc;
1318         if (!exc)
1319                 return 1;
1320         /* If nothing in list, free and set to NULL */
1321         if (!exc->certfile && !exc->next)
1322                 {
1323                 ssl_excert_free(exc);
1324                 *pexc = NULL;
1325                 return 1;
1326                 }
1327         for(; exc; exc=exc->next)
1328                 {
1329                 if (!exc->certfile)
1330                         {
1331                         BIO_printf(err, "Missing filename\n");
1332                         return 0;
1333                         }
1334                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1335                                         NULL, NULL, "Server Certificate");
1336                 if (!exc->cert)
1337                         return 0;
1338                 if (exc->keyfile)
1339                         exc->keyfile = exc->certfile;
1340                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1341                                         NULL, NULL, "Server Certificate");
1342                 if (!exc->key)
1343                         return 0;
1344                 if (exc->chainfile)
1345                         {
1346                         exc->chain = load_certs(err,
1347                                                 exc->chainfile, FORMAT_PEM,
1348                                                 NULL, NULL,
1349                                                 "Server Chain");
1350                         if (!exc->chainfile)
1351                                 return 0;
1352                         }
1353                 }
1354         return 1;
1355         }
1356
1357
1358 int args_excert(char ***pargs, int *pargc,
1359                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1360         {
1361         char *arg = **pargs, *argn = (*pargs)[1];
1362         SSL_EXCERT *exc = *pexc;
1363         int narg = 2;
1364         if (!exc)
1365                 {
1366                 if (ssl_excert_prepend(&exc))
1367                         *pexc = exc;
1368                 else
1369                         {
1370                         BIO_printf(err, "Error initialising xcert\n");
1371                         *badarg = 1;
1372                         goto err;
1373                         }
1374                 }
1375         if (strcmp(arg, "-xcert") == 0)
1376                 {
1377                 if (!argn)
1378                         {
1379                         *badarg = 1;
1380                         return 1;
1381                         }
1382                 if (exc->certfile && !ssl_excert_prepend(&exc))
1383                         {
1384                         BIO_printf(err, "Error adding xcert\n");
1385                         *badarg = 1;
1386                         goto err;
1387                         }
1388                 exc->certfile = argn;
1389                 }
1390         else if (strcmp(arg,"-xkey") == 0)
1391                 {
1392                 if (!argn)
1393                         {
1394                         *badarg = 1;
1395                         return 1;
1396                         }
1397                 if (exc->keyfile)
1398                         {
1399                         BIO_printf(err, "Key already specified\n");
1400                         *badarg = 1;
1401                         return 1;
1402                         }
1403                 exc->keyfile = argn;
1404                 }
1405         else if (strcmp(arg,"-xchain") == 0)
1406                 {
1407                 if (!argn)
1408                         {
1409                         *badarg = 1;
1410                         return 1;
1411                         }
1412                 if (exc->chainfile)
1413                         {
1414                         BIO_printf(err, "Chain already specified\n");
1415                         *badarg = 1;
1416                         return 1;
1417                         }
1418                 exc->chainfile = argn;
1419                 }
1420         else if (strcmp(arg,"-xchain_build") == 0)
1421                 {
1422                 narg = 1;
1423                 exc->build_chain = 1;
1424                 }
1425         else if (strcmp(arg,"-xcertform") == 0)
1426                 {
1427                 if (!argn)
1428                         {
1429                         *badarg = 1;
1430                         goto err;
1431                         }
1432                 exc->certform = str2fmt(argn);
1433                 }
1434         else if (strcmp(arg,"-xkeyform") == 0)
1435                 {
1436                 if (!argn)
1437                         {
1438                         *badarg = 1;
1439                         goto err;
1440                         }
1441                 exc->keyform = str2fmt(argn);
1442                 }
1443         else
1444                 return 0;
1445
1446         (*pargs) += narg;
1447
1448         if (pargc)
1449                 *pargc -= narg;
1450
1451         *pexc = exc;
1452
1453         return 1;
1454
1455         err:
1456         ERR_print_errors(err);
1457         ssl_excert_free(exc);
1458         *pexc = NULL;
1459         return 1;
1460         }
1461