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_point_formats(BIO *out, SSL *s)
 423         {
 424         int i, nformats;
 425         const char *pformats;
 426         nformats = SSL_get0_ec_point_formats(s, &pformats);
 427         if (nformats <= 0)
 428                 return 1;
 429         BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
 430         for (i = 0; i < nformats; i++, pformats++)
 431                 {
 432                 if (i)
 433                         BIO_puts(out, ":");
 434                 switch(*pformats)
 435                         {
 436                 case TLSEXT_ECPOINTFORMAT_uncompressed:
 437                         BIO_puts(out, "uncompressed");
 438                         break;
 439
 440                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
 441                         BIO_puts(out, "ansiX962_compressed_prime");
 442                         break;
 443
 444                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
 445                         BIO_puts(out, "ansiX962_compressed_char2");
 446                         break;
 447
 448                 default:
 449                         BIO_printf(out, "unknown(%d)", (int)*pformats);
 450                         break;
 451
 452                         }
 453                 }
 454         if (nformats <= 0)
 455                 BIO_puts(out, "NONE");
 456         BIO_puts(out, "\n");
 457         return 1;
 458         }
 459
 460
 461 int ssl_print_curves(BIO *out, SSL *s)
 462         {
 463         int i, ncurves, *curves, nid;
 464         const char *cname;
 465         ncurves = SSL_get1_curves(s, NULL);
 466         if (ncurves <= 0)
 467                 return 1;
 468         curves = OPENSSL_malloc(ncurves * sizeof(int));
 469         SSL_get1_curves(s, curves);
 470
 471         BIO_puts(out, "Supported Elliptic Curves: ");
 472         for (i = 0; i < ncurves; i++)
 473                 {
 474                 if (i)
 475                         BIO_puts(out, ":");
 476                 nid = curves[i];
 477                 /* If unrecognised print out hex version */
 478                 if (nid & TLSEXT_nid_unknown)
 479                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 480                 else
 481                         {
 482                         /* Use NIST name for curve if it exists */
 483                         cname = EC_curve_nid2nist(nid);
 484                         if (!cname)
 485                                 cname = OBJ_nid2sn(nid);
 486                         BIO_printf(out, "%s", cname);
 487                         }
 488                 }
 489         BIO_puts(out, "\nShared Elliptic curves: ");
 490         OPENSSL_free(curves);
 491         ncurves = SSL_get_shared_curve(s, -1);
 492         for (i = 0; i < ncurves; i++)
 493                 {
 494                 if (i)
 495                         BIO_puts(out, ":");
 496                 nid = SSL_get_shared_curve(s, i);
 497                 cname = EC_curve_nid2nist(nid);
 498                 if (!cname)
 499                         cname = OBJ_nid2sn(nid);
 500                 BIO_printf(out, "%s", cname);
 501                 }
 502         if (ncurves == 0)
 503                 BIO_puts(out, "NONE");
 504         BIO_puts(out, "\n");
 505         return 1;
 506         }
 507
 508 int ssl_print_tmp_key(BIO *out, SSL *s)
 509         {
 510         EVP_PKEY *key;
 511         if (!SSL_get_server_tmp_key(s, &key))
 512                 return 1;
 513         BIO_puts(out, "Server Temp Key: ");
 514         switch (EVP_PKEY_id(key))
 515                 {
 516         case EVP_PKEY_RSA:
 517                 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
 518                 break;
 519
 520         case EVP_PKEY_DH:
 521                 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
 522                 break;
 523
 524         case EVP_PKEY_EC:
 525                         {
 526                         EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
 527                         int nid;
 528                         const char *cname;
 529                         nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
 530                         EC_KEY_free(ec);
 531                         cname = EC_curve_nid2nist(nid);
 532                         if (!cname)
 533                                 cname = OBJ_nid2sn(nid);
 534                         BIO_printf(out, "ECDH, %s, %d bits\n",
 535                                                 cname, EVP_PKEY_bits(key));
 536                         }
 537                 }
 538         EVP_PKEY_free(key);
 539         return 1;
 540         }
 541
 542
 543 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 544                                    int argi, long argl, long ret)
 545         {
 546         BIO *out;
 547
 548         out=(BIO *)BIO_get_callback_arg(bio);
 549         if (out == NULL) return(ret);
 550
 551         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 552                 {
 553                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 554                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 555                 BIO_dump(out,argp,(int)ret);
 556                 return(ret);
 557                 }
 558         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 559                 {
 560                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 561                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 562                 BIO_dump(out,argp,(int)ret);
 563                 }
 564         return(ret);
 565         }
 566
 567 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 568         {
 569         const char *str;
 570         int w;
 571
 572         w=where& ~SSL_ST_MASK;
 573
 574         if (w & SSL_ST_CONNECT) str="SSL_connect";
 575         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 576         else str="undefined";
 577
 578         if (where & SSL_CB_LOOP)
 579                 {
 580                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 581                 }
 582         else if (where & SSL_CB_ALERT)
 583                 {
 584                 str=(where & SSL_CB_READ)?"read":"write";
 585                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 586                         str,
 587                         SSL_alert_type_string_long(ret),
 588                         SSL_alert_desc_string_long(ret));
 589                 }
 590         else if (where & SSL_CB_EXIT)
 591                 {
 592                 if (ret == 0)
 593                         BIO_printf(bio_err,"%s:failed in %s\n",
 594                                 str,SSL_state_string_long(s));
 595                 else if (ret < 0)
 596                         {
 597                         BIO_printf(bio_err,"%s:error in %s\n",
 598                                 str,SSL_state_string_long(s));
 599                         }
 600                 }
 601         }
 602
 603
 604 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 605         {
 606         BIO *bio = arg;
 607         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 608
 609         str_write_p = write_p ? ">>>" : "<<<";
 610
 611         switch (version)
 612                 {
 613         case SSL2_VERSION:
 614                 str_version = "SSL 2.0";
 615                 break;
 616         case SSL3_VERSION:
 617                 str_version = "SSL 3.0 ";
 618                 break;
 619         case TLS1_VERSION:
 620                 str_version = "TLS 1.0 ";
 621                 break;
 622         case TLS1_1_VERSION:
 623                 str_version = "TLS 1.1 ";
 624                 break;
 625         case TLS1_2_VERSION:
 626                 str_version = "TLS 1.2 ";
 627                 break;
 628         case DTLS1_VERSION:
 629                 str_version = "DTLS 1.0 ";
 630                 break;
 631         case DTLS1_BAD_VER:
 632                 str_version = "DTLS 1.0 (bad) ";
 633                 break;
 634         default:
 635                 str_version = "???";
 636                 }
 637
 638         if (version == SSL2_VERSION)
 639                 {
 640                 str_details1 = "???";
 641
 642                 if (len > 0)
 643                         {
 644                         switch (((const unsigned char*)buf)[0])
 645                                 {
 646                                 case 0:
 647                                         str_details1 = ", ERROR:";
 648                                         str_details2 = " ???";
 649                                         if (len >= 3)
 650                                                 {
 651                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 652
 653                                                 switch (err)
 654                                                         {
 655                                                 case 0x0001:
 656                                                         str_details2 = " NO-CIPHER-ERROR";
 657                                                         break;
 658                                                 case 0x0002:
 659                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 660                                                         break;
 661                                                 case 0x0004:
 662                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 663                                                         break;
 664                                                 case 0x0006:
 665                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 666                                                         break;
 667                                                         }
 668                                                 }
 669
 670                                         break;
 671                                 case 1:
 672                                         str_details1 = ", CLIENT-HELLO";
 673                                         break;
 674                                 case 2:
 675                                         str_details1 = ", CLIENT-MASTER-KEY";
 676                                         break;
 677                                 case 3:
 678                                         str_details1 = ", CLIENT-FINISHED";
 679                                         break;
 680                                 case 4:
 681                                         str_details1 = ", SERVER-HELLO";
 682                                         break;
 683                                 case 5:
 684                                         str_details1 = ", SERVER-VERIFY";
 685                                         break;
 686                                 case 6:
 687                                         str_details1 = ", SERVER-FINISHED";
 688                                         break;
 689                                 case 7:
 690                                         str_details1 = ", REQUEST-CERTIFICATE";
 691                                         break;
 692                                 case 8:
 693                                         str_details1 = ", CLIENT-CERTIFICATE";
 694                                         break;
 695                                 }
 696                         }
 697                 }
 698
 699         if (version == SSL3_VERSION ||
 700             version == TLS1_VERSION ||
 701             version == TLS1_1_VERSION ||
 702             version == TLS1_2_VERSION ||
 703             version == DTLS1_VERSION ||
 704             version == DTLS1_BAD_VER)
 705                 {
 706                 switch (content_type)
 707                         {
 708                 case 20:
 709                         str_content_type = "ChangeCipherSpec";
 710                         break;
 711                 case 21:
 712                         str_content_type = "Alert";
 713                         break;
 714                 case 22:
 715                         str_content_type = "Handshake";
 716                         break;
 717                         }
 718
 719                 if (content_type == 21) /* Alert */
 720                         {
 721                         str_details1 = ", ???";
 722
 723                         if (len == 2)
 724                                 {
 725                                 switch (((const unsigned char*)buf)[0])
 726                                         {
 727                                 case 1:
 728                                         str_details1 = ", warning";
 729                                         break;
 730                                 case 2:
 731                                         str_details1 = ", fatal";
 732                                         break;
 733                                         }
 734
 735                                 str_details2 = " ???";
 736                                 switch (((const unsigned char*)buf)[1])
 737                                         {
 738                                 case 0:
 739                                         str_details2 = " close_notify";
 740                                         break;
 741                                 case 10:
 742                                         str_details2 = " unexpected_message";
 743                                         break;
 744                                 case 20:
 745                                         str_details2 = " bad_record_mac";
 746                                         break;
 747                                 case 21:
 748                                         str_details2 = " decryption_failed";
 749                                         break;
 750                                 case 22:
 751                                         str_details2 = " record_overflow";
 752                                         break;
 753                                 case 30:
 754                                         str_details2 = " decompression_failure";
 755                                         break;
 756                                 case 40:
 757                                         str_details2 = " handshake_failure";
 758                                         break;
 759                                 case 42:
 760                                         str_details2 = " bad_certificate";
 761                                         break;
 762                                 case 43:
 763                                         str_details2 = " unsupported_certificate";
 764                                         break;
 765                                 case 44:
 766                                         str_details2 = " certificate_revoked";
 767                                         break;
 768                                 case 45:
 769                                         str_details2 = " certificate_expired";
 770                                         break;
 771                                 case 46:
 772                                         str_details2 = " certificate_unknown";
 773                                         break;
 774                                 case 47:
 775                                         str_details2 = " illegal_parameter";
 776                                         break;
 777                                 case 48:
 778                                         str_details2 = " unknown_ca";
 779                                         break;
 780                                 case 49:
 781                                         str_details2 = " access_denied";
 782                                         break;
 783                                 case 50:
 784                                         str_details2 = " decode_error";
 785                                         break;
 786                                 case 51:
 787                                         str_details2 = " decrypt_error";
 788                                         break;
 789                                 case 60:
 790                                         str_details2 = " export_restriction";
 791                                         break;
 792                                 case 70:
 793                                         str_details2 = " protocol_version";
 794                                         break;
 795                                 case 71:
 796                                         str_details2 = " insufficient_security";
 797                                         break;
 798                                 case 80:
 799                                         str_details2 = " internal_error";
 800                                         break;
 801                                 case 90:
 802                                         str_details2 = " user_canceled";
 803                                         break;
 804                                 case 100:
 805                                         str_details2 = " no_renegotiation";
 806                                         break;
 807                                 case 110:
 808                                         str_details2 = " unsupported_extension";
 809                                         break;
 810                                 case 111:
 811                                         str_details2 = " certificate_unobtainable";
 812                                         break;
 813                                 case 112:
 814                                         str_details2 = " unrecognized_name";
 815                                         break;
 816                                 case 113:
 817                                         str_details2 = " bad_certificate_status_response";
 818                                         break;
 819                                 case 114:
 820                                         str_details2 = " bad_certificate_hash_value";
 821                                         break;
 822                                 case 115:
 823                                         str_details2 = " unknown_psk_identity";
 824                                         break;
 825                                         }
 826                                 }
 827                         }
 828
 829                 if (content_type == 22) /* Handshake */
 830                         {
 831                         str_details1 = "???";
 832
 833                         if (len > 0)
 834                                 {
 835                                 switch (((const unsigned char*)buf)[0])
 836                                         {
 837                                 case 0:
 838                                         str_details1 = ", HelloRequest";
 839                                         break;
 840                                 case 1:
 841                                         str_details1 = ", ClientHello";
 842                                         break;
 843                                 case 2:
 844                                         str_details1 = ", ServerHello";
 845                                         break;
 846                                 case 3:
 847                                         str_details1 = ", HelloVerifyRequest";
 848                                         break;
 849                                 case 11:
 850                                         str_details1 = ", Certificate";
 851                                         break;
 852                                 case 12:
 853                                         str_details1 = ", ServerKeyExchange";
 854                                         break;
 855                                 case 13:
 856                                         str_details1 = ", CertificateRequest";
 857                                         break;
 858                                 case 14:
 859                                         str_details1 = ", ServerHelloDone";
 860                                         break;
 861                                 case 15:
 862                                         str_details1 = ", CertificateVerify";
 863                                         break;
 864                                 case 16:
 865                                         str_details1 = ", ClientKeyExchange";
 866                                         break;
 867                                 case 20:
 868                                         str_details1 = ", Finished";
 869                                         break;
 870                                         }
 871                                 }
 872                         }
 873
 874 #ifndef OPENSSL_NO_HEARTBEATS
 875                 if (content_type == 24) /* Heartbeat */
 876                         {
 877                         str_details1 = ", Heartbeat";
 878
 879                         if (len > 0)
 880                                 {
 881                                 switch (((const unsigned char*)buf)[0])
 882                                         {
 883                                 case 1:
 884                                         str_details1 = ", HeartbeatRequest";
 885                                         break;
 886                                 case 2:
 887                                         str_details1 = ", HeartbeatResponse";
 888                                         break;
 889                                         }
 890                                 }
 891                         }
 892 #endif
 893                 }
 894
 895         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);
 896
 897         if (len > 0)
 898                 {
 899                 size_t num, i;
 900
 901                 BIO_printf(bio, "   ");
 902                 num = len;
 903 #if 0
 904                 if (num > 16)
 905                         num = 16;
 906 #endif
 907                 for (i = 0; i < num; i++)
 908                         {
 909                         if (i % 16 == 0 && i > 0)
 910                                 BIO_printf(bio, "\n   ");
 911                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 912                         }
 913                 if (i < len)
 914                         BIO_printf(bio, " ...");
 915                 BIO_printf(bio, "\n");
 916                 }
 917         (void)BIO_flush(bio);
 918         }
 919
 920 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 921                                         unsigned char *data, int len,
 922                                         void *arg)
 923         {
 924         BIO *bio = arg;
 925         char *extname;
 926
 927         switch(type)
 928                 {
 929                 case TLSEXT_TYPE_server_name:
 930                 extname = "server name";
 931                 break;
 932
 933                 case TLSEXT_TYPE_max_fragment_length:
 934                 extname = "max fragment length";
 935                 break;
 936
 937                 case TLSEXT_TYPE_client_certificate_url:
 938                 extname = "client certificate URL";
 939                 break;
 940
 941                 case TLSEXT_TYPE_trusted_ca_keys:
 942                 extname = "trusted CA keys";
 943                 break;
 944
 945                 case TLSEXT_TYPE_truncated_hmac:
 946                 extname = "truncated HMAC";
 947                 break;
 948
 949                 case TLSEXT_TYPE_status_request:
 950                 extname = "status request";
 951                 break;
 952
 953                 case TLSEXT_TYPE_user_mapping:
 954                 extname = "user mapping";
 955                 break;
 956
 957                 case TLSEXT_TYPE_client_authz:
 958                 extname = "client authz";
 959                 break;
 960
 961                 case TLSEXT_TYPE_server_authz:
 962                 extname = "server authz";
 963                 break;
 964
 965                 case TLSEXT_TYPE_cert_type:
 966                 extname = "cert type";
 967                 break;
 968
 969                 case TLSEXT_TYPE_elliptic_curves:
 970                 extname = "elliptic curves";
 971                 break;
 972
 973                 case TLSEXT_TYPE_ec_point_formats:
 974                 extname = "EC point formats";
 975                 break;
 976
 977                 case TLSEXT_TYPE_srp:
 978                 extname = "SRP";
 979                 break;
 980
 981                 case TLSEXT_TYPE_signature_algorithms:
 982                 extname = "signature algorithms";
 983                 break;
 984
 985                 case TLSEXT_TYPE_use_srtp:
 986                 extname = "use SRTP";
 987                 break;
 988
 989                 case TLSEXT_TYPE_heartbeat:
 990                 extname = "heartbeat";
 991                 break;
 992
 993                 case TLSEXT_TYPE_session_ticket:
 994                 extname = "session ticket";
 995                 break;
 996
 997                 case TLSEXT_TYPE_renegotiate:
 998                 extname = "renegotiation info";
 999                 break;
1000
1001 #ifdef TLSEXT_TYPE_opaque_prf_input
1002                 case TLSEXT_TYPE_opaque_prf_input:
1003                 extname = "opaque PRF input";
1004                 break;
1005 #endif
1006 #ifdef TLSEXT_TYPE_next_proto_neg
1007                 case TLSEXT_TYPE_next_proto_neg:
1008                 extname = "next protocol";
1009                 break;
1010 #endif
1011
1012                 default:
1013                 extname = "unknown";
1014                 break;
1015
1016                 }
1017
1018         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1019                         client_server ? "server": "client",
1020                         extname, type, len);
1021         BIO_dump(bio, (char *)data, len);
1022         (void)BIO_flush(bio);
1023         }
1024
1025 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1026         {
1027         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1028         unsigned int length, resultlength;
1029         union {
1030                 struct sockaddr sa;
1031                 struct sockaddr_in s4;
1032 #if OPENSSL_USE_IPV6
1033                 struct sockaddr_in6 s6;
1034 #endif
1035         } peer;
1036
1037         /* Initialize a random secret */
1038         if (!cookie_initialized)
1039                 {
1040                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1041                         {
1042                         BIO_printf(bio_err,"error setting random cookie secret\n");
1043                         return 0;
1044                         }
1045                 cookie_initialized = 1;
1046                 }
1047
1048         /* Read peer information */
1049         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1050
1051         /* Create buffer with peer's address and port */
1052         length = 0;
1053         switch (peer.sa.sa_family)
1054                 {
1055         case AF_INET:
1056                 length += sizeof(struct in_addr);
1057                 length += sizeof(peer.s4.sin_port);
1058                 break;
1059 #if OPENSSL_USE_IPV6
1060         case AF_INET6:
1061                 length += sizeof(struct in6_addr);
1062                 length += sizeof(peer.s6.sin6_port);
1063                 break;
1064 #endif
1065         default:
1066                 OPENSSL_assert(0);
1067                 break;
1068                 }
1069         buffer = OPENSSL_malloc(length);
1070
1071         if (buffer == NULL)
1072                 {
1073                 BIO_printf(bio_err,"out of memory\n");
1074                 return 0;
1075                 }
1076
1077         switch (peer.sa.sa_family)
1078                 {
1079         case AF_INET:
1080                 memcpy(buffer,
1081                        &peer.s4.sin_port,
1082                        sizeof(peer.s4.sin_port));
1083                 memcpy(buffer + sizeof(peer.s4.sin_port),
1084                        &peer.s4.sin_addr,
1085                        sizeof(struct in_addr));
1086                 break;
1087 #if OPENSSL_USE_IPV6
1088         case AF_INET6:
1089                 memcpy(buffer,
1090                        &peer.s6.sin6_port,
1091                        sizeof(peer.s6.sin6_port));
1092                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1093                        &peer.s6.sin6_addr,
1094                        sizeof(struct in6_addr));
1095                 break;
1096 #endif
1097         default:
1098                 OPENSSL_assert(0);
1099                 break;
1100                 }
1101
1102         /* Calculate HMAC of buffer using the secret */
1103         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1104              buffer, length, result, &resultlength);
1105         OPENSSL_free(buffer);
1106
1107         memcpy(cookie, result, resultlength);
1108         *cookie_len = resultlength;
1109
1110         return 1;
1111         }
1112
1113 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1114         {
1115         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1116         unsigned int length, resultlength;
1117         union {
1118                 struct sockaddr sa;
1119                 struct sockaddr_in s4;
1120 #if OPENSSL_USE_IPV6
1121                 struct sockaddr_in6 s6;
1122 #endif
1123         } peer;
1124
1125         /* If secret isn't initialized yet, the cookie can't be valid */
1126         if (!cookie_initialized)
1127                 return 0;
1128
1129         /* Read peer information */
1130         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1131
1132         /* Create buffer with peer's address and port */
1133         length = 0;
1134         switch (peer.sa.sa_family)
1135                 {
1136         case AF_INET:
1137                 length += sizeof(struct in_addr);
1138                 length += sizeof(peer.s4.sin_port);
1139                 break;
1140 #if OPENSSL_USE_IPV6
1141         case AF_INET6:
1142                 length += sizeof(struct in6_addr);
1143                 length += sizeof(peer.s6.sin6_port);
1144                 break;
1145 #endif
1146         default:
1147                 OPENSSL_assert(0);
1148                 break;
1149                 }
1150         buffer = OPENSSL_malloc(length);
1151
1152         if (buffer == NULL)
1153                 {
1154                 BIO_printf(bio_err,"out of memory\n");
1155                 return 0;
1156                 }
1157
1158         switch (peer.sa.sa_family)
1159                 {
1160         case AF_INET:
1161                 memcpy(buffer,
1162                        &peer.s4.sin_port,
1163                        sizeof(peer.s4.sin_port));
1164                 memcpy(buffer + sizeof(peer.s4.sin_port),
1165                        &peer.s4.sin_addr,
1166                        sizeof(struct in_addr));
1167                 break;
1168 #if OPENSSL_USE_IPV6
1169         case AF_INET6:
1170                 memcpy(buffer,
1171                        &peer.s6.sin6_port,
1172                        sizeof(peer.s6.sin6_port));
1173                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1174                        &peer.s6.sin6_addr,
1175                        sizeof(struct in6_addr));
1176                 break;
1177 #endif
1178         default:
1179                 OPENSSL_assert(0);
1180                 break;
1181                 }
1182
1183         /* Calculate HMAC of buffer using the secret */
1184         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1185              buffer, length, result, &resultlength);
1186         OPENSSL_free(buffer);
1187
1188         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1189                 return 1;
1190
1191         return 0;
1192         }
1193
1194 /* Example of extended certificate handling. Where the standard support
1195  * of one certificate per algorithm is not sufficient an application
1196  * can decide which certificate(s) to use at runtime based on whatever
1197  * criteria it deems appropriate.
1198  */
1199
1200 /* Linked list of certificates, keys and chains */
1201 struct  ssl_excert_st
1202         {
1203         int certform;
1204         const char *certfile;
1205         int keyform;
1206         const char *keyfile;
1207         const char *chainfile;
1208         X509 *cert;
1209         EVP_PKEY *key;
1210         STACK_OF(X509) *chain;
1211         int build_chain;
1212         struct ssl_excert_st *next, *prev;
1213         };
1214
1215 struct chain_flags
1216         {
1217         int flag;
1218         const char *name;
1219         };
1220
1221 struct chain_flags chain_flags_list[] =
1222         {
1223                 {CERT_PKEY_VALID, "Overall Validity"},
1224                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1225                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1226                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1227                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1228                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1229                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1230                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1231                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1232                 {0, NULL}
1233         };
1234
1235
1236 static void print_chain_flags(BIO *out, int flags)
1237         {
1238         struct chain_flags *ctmp = chain_flags_list;
1239         while(ctmp->name)
1240                 {
1241                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1242                                 flags & ctmp->flag ? "OK" : "NOT OK");
1243                 ctmp++;
1244                 }
1245         }
1246
1247 /* Very basic selection callback: just use any certificate chain
1248  * reported as valid. More sophisticated could prioritise according
1249  * to local policy.
1250  */
1251 static int set_cert_cb(SSL *ssl, void *arg)
1252         {
1253         int i, rv;
1254         SSL_EXCERT *exc = arg;
1255         SSL_certs_clear(ssl);
1256
1257         if (!exc)
1258                 return 1;
1259
1260         /* Go to end of list and traverse backwards since we prepend
1261          * newer entries this retains the original order.
1262          */
1263         while (exc->next)
1264                 exc = exc->next;
1265
1266         i = 0;
1267
1268         while(exc)
1269                 {
1270                 i++;
1271                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1272                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1273                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1274                                                         XN_FLAG_ONELINE);
1275                 BIO_puts(bio_err, "\n");
1276
1277                 print_chain_flags(bio_err, rv);
1278                 if (rv & CERT_PKEY_VALID)
1279                         {
1280                         SSL_use_certificate(ssl, exc->cert);
1281                         SSL_use_PrivateKey(ssl, exc->key);
1282                         /* NB: we wouldn't normally do this as it is
1283                          * not efficient building chains on each connection
1284                          * better to cache the chain in advance.
1285                          */
1286                         if (exc->build_chain)
1287                                 {
1288                                 if (!SSL_build_cert_chain(ssl, 0))
1289                                         return 0;
1290                                 }
1291                         else if (exc->chain)
1292                                 SSL_set1_chain(ssl, exc->chain);
1293                         }
1294                 exc = exc->prev;
1295                 }
1296         return 1;
1297         }
1298
1299 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1300         {
1301         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1302         }
1303
1304 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1305         {
1306         SSL_EXCERT *exc;
1307         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1308         if (!exc)
1309                 return 0;
1310         exc->certfile = NULL;
1311         exc->keyfile = NULL;
1312         exc->chainfile = NULL;
1313         exc->cert = NULL;
1314         exc->key = NULL;
1315         exc->chain = NULL;
1316         exc->prev = NULL;
1317         exc->build_chain = 0;
1318
1319         exc->next = *pexc;
1320         *pexc = exc;
1321
1322         if (exc->next)
1323                 {
1324                 exc->certform = exc->next->certform;
1325                 exc->keyform = exc->next->keyform;
1326                 exc->next->prev = exc;
1327                 }
1328         else
1329                 {
1330                 exc->certform = FORMAT_PEM;
1331                 exc->keyform = FORMAT_PEM;
1332                 }
1333         return 1;
1334
1335         }
1336
1337 void ssl_excert_free(SSL_EXCERT *exc)
1338         {
1339         SSL_EXCERT *curr;
1340         while (exc)
1341                 {
1342                 if (exc->cert)
1343                         X509_free(exc->cert);
1344                 if (exc->key)
1345                         EVP_PKEY_free(exc->key);
1346                 if (exc->chain)
1347                         sk_X509_pop_free(exc->chain, X509_free);
1348                 curr = exc;
1349                 exc = exc->next;
1350                 OPENSSL_free(curr);
1351                 }
1352         }
1353
1354 int load_excert(SSL_EXCERT **pexc, BIO *err)
1355         {
1356         SSL_EXCERT *exc = *pexc;
1357         if (!exc)
1358                 return 1;
1359         /* If nothing in list, free and set to NULL */
1360         if (!exc->certfile && !exc->next)
1361                 {
1362                 ssl_excert_free(exc);
1363                 *pexc = NULL;
1364                 return 1;
1365                 }
1366         for(; exc; exc=exc->next)
1367                 {
1368                 if (!exc->certfile)
1369                         {
1370                         BIO_printf(err, "Missing filename\n");
1371                         return 0;
1372                         }
1373                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1374                                         NULL, NULL, "Server Certificate");
1375                 if (!exc->cert)
1376                         return 0;
1377                 if (exc->keyfile)
1378                         exc->keyfile = exc->certfile;
1379                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1380                                         NULL, NULL, "Server Certificate");
1381                 if (!exc->key)
1382                         return 0;
1383                 if (exc->chainfile)
1384                         {
1385                         exc->chain = load_certs(err,
1386                                                 exc->chainfile, FORMAT_PEM,
1387                                                 NULL, NULL,
1388                                                 "Server Chain");
1389                         if (!exc->chainfile)
1390                                 return 0;
1391                         }
1392                 }
1393         return 1;
1394         }
1395
1396
1397 int args_excert(char ***pargs, int *pargc,
1398                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1399         {
1400         char *arg = **pargs, *argn = (*pargs)[1];
1401         SSL_EXCERT *exc = *pexc;
1402         int narg = 2;
1403         if (!exc)
1404                 {
1405                 if (ssl_excert_prepend(&exc))
1406                         *pexc = exc;
1407                 else
1408                         {
1409                         BIO_printf(err, "Error initialising xcert\n");
1410                         *badarg = 1;
1411                         goto err;
1412                         }
1413                 }
1414         if (strcmp(arg, "-xcert") == 0)
1415                 {
1416                 if (!argn)
1417                         {
1418                         *badarg = 1;
1419                         return 1;
1420                         }
1421                 if (exc->certfile && !ssl_excert_prepend(&exc))
1422                         {
1423                         BIO_printf(err, "Error adding xcert\n");
1424                         *badarg = 1;
1425                         goto err;
1426                         }
1427                 exc->certfile = argn;
1428                 }
1429         else if (strcmp(arg,"-xkey") == 0)
1430                 {
1431                 if (!argn)
1432                         {
1433                         *badarg = 1;
1434                         return 1;
1435                         }
1436                 if (exc->keyfile)
1437                         {
1438                         BIO_printf(err, "Key already specified\n");
1439                         *badarg = 1;
1440                         return 1;
1441                         }
1442                 exc->keyfile = argn;
1443                 }
1444         else if (strcmp(arg,"-xchain") == 0)
1445                 {
1446                 if (!argn)
1447                         {
1448                         *badarg = 1;
1449                         return 1;
1450                         }
1451                 if (exc->chainfile)
1452                         {
1453                         BIO_printf(err, "Chain already specified\n");
1454                         *badarg = 1;
1455                         return 1;
1456                         }
1457                 exc->chainfile = argn;
1458                 }
1459         else if (strcmp(arg,"-xchain_build") == 0)
1460                 {
1461                 narg = 1;
1462                 exc->build_chain = 1;
1463                 }
1464         else if (strcmp(arg,"-xcertform") == 0)
1465                 {
1466                 if (!argn)
1467                         {
1468                         *badarg = 1;
1469                         goto err;
1470                         }
1471                 exc->certform = str2fmt(argn);
1472                 }
1473         else if (strcmp(arg,"-xkeyform") == 0)
1474                 {
1475                 if (!argn)
1476                         {
1477                         *badarg = 1;
1478                         goto err;
1479                         }
1480                 exc->keyform = str2fmt(argn);
1481                 }
1482         else
1483                 return 0;
1484
1485         (*pargs) += narg;
1486
1487         if (pargc)
1488                 *pargc -= narg;
1489
1490         *pexc = exc;
1491
1492         return 1;
1493
1494         err:
1495         ERR_print_errors(err);
1496         ssl_excert_free(exc);
1497         *pexc = NULL;
1498         return 1;
1499         }
1500
1501 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1502                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1503         {
1504         char *arg = **pargs, *argn = (*pargs)[1];
1505         int rv;
1506
1507         /* Attempt to run SSL configuration command */
1508         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1509         /* If parameter not recognised just return */
1510         if (rv == 0)
1511                 return 0;
1512         /* see if missing argument error */
1513         if (rv == -3)
1514                 {
1515                 BIO_printf(err, "%s needs an argument\n", arg);
1516                 *badarg = 1;
1517                 goto end;
1518                 }
1519         /* Check for some other error */
1520         if (rv < 0)
1521                 {
1522                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1523                                                 arg, argn ? argn : "");
1524                 *badarg = 1;
1525                 goto end;
1526                 }
1527         /* Store command and argument */
1528         /* If only one argument processed store value as NULL */
1529         if (rv == 1)
1530                 argn = NULL;
1531         if (!*pstr)
1532                 *pstr = sk_OPENSSL_STRING_new_null();
1533         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1534                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1535                 {
1536                 BIO_puts(err, "Memory allocation failure\n");
1537                 goto end;
1538                 }
1539
1540         end:
1541         if (*badarg)
1542                 ERR_print_errors(err);
1543
1544         return 1;
1545         }
1546
1547 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1548                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1549         {
1550         int i;
1551         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1552         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1553                 {
1554                 const char *param = sk_OPENSSL_STRING_value(str, i);
1555                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1556                 /* If no_ecdhe or named curve already specified don't need
1557                  * a default.
1558                  */
1559                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1560                         no_ecdhe = 1;
1561 #ifndef OPENSSL_NO_JPAKE
1562                 if (!no_jpake && !strcmp(param, "-cipher"))
1563                         {
1564                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1565                         return 0;
1566                         }
1567 #endif
1568                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1569                         {
1570                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1571                                                 param, value ? value : "");
1572                         ERR_print_errors(err);
1573                         return 0;
1574                         }
1575                 }
1576         /* This is a special case to keep existing s_server functionality:
1577          * if we don't have any curve specified *and* we haven't disabled
1578          * ECDHE then use P-256.
1579          */
1580         if (!no_ecdhe)
1581                 {
1582                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1583                         {
1584                         BIO_puts(err, "Error setting EC curve\n");
1585                         ERR_print_errors(err);
1586                         return 0;
1587                         }
1588                 }
1589 #ifndef OPENSSL_NO_JPAKE
1590         if (!no_jpake)
1591                 {
1592                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1593                         {
1594                         BIO_puts(err, "Error setting cipher to PSK\n");
1595                         ERR_print_errors(err);
1596                         return 0;
1597                         }
1598                 }
1599 #endif
1600         return 1;
1601         }
1602
1603 int ssl_load_stores(SSL_CTX *ctx,
1604                         const char *vfyCApath, const char *vfyCAfile,
1605                         const char *chCApath, const char *chCAfile)
1606         {
1607         X509_STORE *vfy = NULL, *ch = NULL;
1608         int rv = 0;
1609         if (vfyCApath || vfyCAfile)
1610                 {
1611                 vfy = X509_STORE_new();
1612                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1613                         goto err;
1614                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1615                 }
1616         if (chCApath || chCAfile)
1617                 {
1618                 ch = X509_STORE_new();
1619                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1620                         goto err;
1621                 /*X509_STORE_set_verify_cb(ch, verify_callback);*/
1622                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1623                 }
1624         rv = 1;
1625         err:
1626         if (vfy)
1627                 X509_STORE_free(vfy);
1628         if (ch)
1629                 X509_STORE_free(ch);
1630         return rv;
1631         }