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         return 1;
 292         }
 293
 294 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
 295         {
 296         const unsigned char *p;
 297         int i;
 298         int cert_type_num = SSL_get0_certificate_types(s, &p);
 299         if (!cert_type_num)
 300                 return;
 301         BIO_puts(bio, "Client Certificate Types: ");
 302         for (i = 0; i < cert_type_num; i++)
 303                 {
 304                 unsigned char cert_type = p[i];
 305                 char *cname;
 306                 switch(cert_type)
 307                         {
 308                 case TLS_CT_RSA_SIGN:
 309                         cname = "RSA sign";
 310                         break;
 311
 312                 case TLS_CT_DSS_SIGN:
 313                         cname = "DSA sign";
 314                         break;
 315
 316                 case TLS_CT_RSA_FIXED_DH:
 317                         cname = "RSA fixed DH";
 318                         break;
 319
 320                 case TLS_CT_DSS_FIXED_DH:
 321                         cname = "DSS fixed DH";
 322                         break;
 323
 324                 case TLS_CT_ECDSA_SIGN:
 325                         cname = "ECDSA sign";
 326                         break;
 327
 328                 case TLS_CT_RSA_FIXED_ECDH:
 329                         cname = "RSA fixed ECDH";
 330                         break;
 331
 332                 case TLS_CT_ECDSA_FIXED_ECDH:
 333                         cname = "ECDSA fixed ECDH";
 334                         break;
 335
 336                 case TLS_CT_GOST94_SIGN:
 337                         cname = "GOST94 Sign";
 338                         break;
 339
 340                 case TLS_CT_GOST01_SIGN:
 341                         cname = "GOST01 Sign";
 342                         break;
 343
 344                 default:
 345                          cname = NULL;
 346                         }
 347
 348                 if (i)
 349                         BIO_puts(bio, ", ");
 350
 351                 if (cname)
 352                         BIO_puts(bio, cname);
 353                 else
 354                         BIO_printf(bio, "UNKNOWN (%d),", cert_type);
 355                 }
 356         BIO_puts(bio, "\n");
 357         }
 358
 359 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
 360         {
 361         int i, nsig, client;
 362         client = SSL_is_server(s) ? 0 : 1;
 363         if (shared)
 364                 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
 365                                                         NULL, NULL);
 366         else
 367                 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 368         if (nsig == 0)
 369                 return 1;
 370
 371         if (shared)
 372                 BIO_puts(out, "Shared ");
 373
 374         if (client)
 375                 BIO_puts(out, "Requested ");
 376         BIO_puts(out, "Signature Algorithms: ");
 377         for (i = 0; i < nsig; i++)
 378                 {
 379                 int hash_nid, sign_nid;
 380                 unsigned char rhash, rsign;
 381                 const char *sstr = NULL;
 382                 if (shared)
 383                         SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 384                                                         &rsign, &rhash);
 385                 else
 386                         SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 387                                                         &rsign, &rhash);
 388                 if (i)
 389                         BIO_puts(out, ":");
 390                 if (sign_nid == EVP_PKEY_RSA)
 391                         sstr = "RSA";
 392                 else if(sign_nid == EVP_PKEY_DSA)
 393                         sstr = "DSA";
 394                 else if(sign_nid == EVP_PKEY_EC)
 395                         sstr = "ECDSA";
 396                 if (sstr)
 397                         BIO_printf(out,"%s+", sstr);
 398                 else
 399                         BIO_printf(out,"0x%02X+", (int)rsign);
 400                 if (hash_nid != NID_undef)
 401                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
 402                 else
 403                         BIO_printf(out,"0x%02X", (int)rhash);
 404                 }
 405         BIO_puts(out, "\n");
 406         return 1;
 407         }
 408
 409 int ssl_print_sigalgs(BIO *out, SSL *s)
 410         {
 411         int mdnid;
 412         if (!SSL_is_server(s))
 413                 ssl_print_client_cert_types(out, s);
 414         do_print_sigalgs(out, s, 0);
 415         do_print_sigalgs(out, s, 1);
 416         if (SSL_get_peer_signature_nid(s, &mdnid))
 417                 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
 418         return 1;
 419         }
 420
 421 int ssl_print_point_formats(BIO *out, SSL *s)
 422         {
 423         int i, nformats;
 424         const char *pformats;
 425         nformats = SSL_get0_ec_point_formats(s, &pformats);
 426         if (nformats <= 0)
 427                 return 1;
 428         BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
 429         for (i = 0; i < nformats; i++, pformats++)
 430                 {
 431                 if (i)
 432                         BIO_puts(out, ":");
 433                 switch(*pformats)
 434                         {
 435                 case TLSEXT_ECPOINTFORMAT_uncompressed:
 436                         BIO_puts(out, "uncompressed");
 437                         break;
 438
 439                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
 440                         BIO_puts(out, "ansiX962_compressed_prime");
 441                         break;
 442
 443                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
 444                         BIO_puts(out, "ansiX962_compressed_char2");
 445                         break;
 446
 447                 default:
 448                         BIO_printf(out, "unknown(%d)", (int)*pformats);
 449                         break;
 450
 451                         }
 452                 }
 453         if (nformats <= 0)
 454                 BIO_puts(out, "NONE");
 455         BIO_puts(out, "\n");
 456         return 1;
 457         }
 458
 459
 460 int ssl_print_curves(BIO *out, SSL *s)
 461         {
 462         int i, ncurves, *curves, nid;
 463         const char *cname;
 464         ncurves = SSL_get1_curves(s, NULL);
 465         if (ncurves <= 0)
 466                 return 1;
 467         curves = OPENSSL_malloc(ncurves * sizeof(int));
 468         SSL_get1_curves(s, curves);
 469
 470         BIO_puts(out, "Supported Elliptic Curves: ");
 471         for (i = 0; i < ncurves; i++)
 472                 {
 473                 if (i)
 474                         BIO_puts(out, ":");
 475                 nid = curves[i];
 476                 /* If unrecognised print out hex version */
 477                 if (nid & TLSEXT_nid_unknown)
 478                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 479                 else
 480                         {
 481                         /* Use NIST name for curve if it exists */
 482                         cname = EC_curve_nid2nist(nid);
 483                         if (!cname)
 484                                 cname = OBJ_nid2sn(nid);
 485                         BIO_printf(out, "%s", cname);
 486                         }
 487                 }
 488         BIO_puts(out, "\nShared Elliptic curves: ");
 489         OPENSSL_free(curves);
 490         ncurves = SSL_get_shared_curve(s, -1);
 491         for (i = 0; i < ncurves; i++)
 492                 {
 493                 if (i)
 494                         BIO_puts(out, ":");
 495                 nid = SSL_get_shared_curve(s, i);
 496                 cname = EC_curve_nid2nist(nid);
 497                 if (!cname)
 498                         cname = OBJ_nid2sn(nid);
 499                 BIO_printf(out, "%s", cname);
 500                 }
 501         if (ncurves == 0)
 502                 BIO_puts(out, "NONE");
 503         BIO_puts(out, "\n");
 504         return 1;
 505         }
 506
 507 int ssl_print_tmp_key(BIO *out, SSL *s)
 508         {
 509         EVP_PKEY *key;
 510         if (!SSL_get_server_tmp_key(s, &key))
 511                 return 1;
 512         BIO_puts(out, "Server Temp Key: ");
 513         switch (EVP_PKEY_id(key))
 514                 {
 515         case EVP_PKEY_RSA:
 516                 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
 517                 break;
 518
 519         case EVP_PKEY_DH:
 520                 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
 521                 break;
 522
 523         case EVP_PKEY_EC:
 524                         {
 525                         EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
 526                         int nid;
 527                         const char *cname;
 528                         nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
 529                         EC_KEY_free(ec);
 530                         cname = EC_curve_nid2nist(nid);
 531                         if (!cname)
 532                                 cname = OBJ_nid2sn(nid);
 533                         BIO_printf(out, "ECDH, %s, %d bits\n",
 534                                                 cname, EVP_PKEY_bits(key));
 535                         }
 536                 }
 537         EVP_PKEY_free(key);
 538         return 1;
 539         }
 540
 541
 542 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 543                                    int argi, long argl, long ret)
 544         {
 545         BIO *out;
 546
 547         out=(BIO *)BIO_get_callback_arg(bio);
 548         if (out == NULL) return(ret);
 549
 550         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 551                 {
 552                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 553                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 554                 BIO_dump(out,argp,(int)ret);
 555                 return(ret);
 556                 }
 557         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 558                 {
 559                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 560                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 561                 BIO_dump(out,argp,(int)ret);
 562                 }
 563         return(ret);
 564         }
 565
 566 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 567         {
 568         const char *str;
 569         int w;
 570
 571         w=where& ~SSL_ST_MASK;
 572
 573         if (w & SSL_ST_CONNECT) str="SSL_connect";
 574         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 575         else str="undefined";
 576
 577         if (where & SSL_CB_LOOP)
 578                 {
 579                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 580                 }
 581         else if (where & SSL_CB_ALERT)
 582                 {
 583                 str=(where & SSL_CB_READ)?"read":"write";
 584                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 585                         str,
 586                         SSL_alert_type_string_long(ret),
 587                         SSL_alert_desc_string_long(ret));
 588                 }
 589         else if (where & SSL_CB_EXIT)
 590                 {
 591                 if (ret == 0)
 592                         BIO_printf(bio_err,"%s:failed in %s\n",
 593                                 str,SSL_state_string_long(s));
 594                 else if (ret < 0)
 595                         {
 596                         BIO_printf(bio_err,"%s:error in %s\n",
 597                                 str,SSL_state_string_long(s));
 598                         }
 599                 }
 600         }
 601
 602
 603 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 604         {
 605         BIO *bio = arg;
 606         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 607
 608         str_write_p = write_p ? ">>>" : "<<<";
 609
 610         switch (version)
 611                 {
 612         case SSL2_VERSION:
 613                 str_version = "SSL 2.0";
 614                 break;
 615         case SSL3_VERSION:
 616                 str_version = "SSL 3.0 ";
 617                 break;
 618         case TLS1_VERSION:
 619                 str_version = "TLS 1.0 ";
 620                 break;
 621         case TLS1_1_VERSION:
 622                 str_version = "TLS 1.1 ";
 623                 break;
 624         case TLS1_2_VERSION:
 625                 str_version = "TLS 1.2 ";
 626                 break;
 627         case DTLS1_VERSION:
 628                 str_version = "DTLS 1.0 ";
 629                 break;
 630         case DTLS1_BAD_VER:
 631                 str_version = "DTLS 1.0 (bad) ";
 632                 break;
 633         default:
 634                 str_version = "???";
 635                 }
 636
 637         if (version == SSL2_VERSION)
 638                 {
 639                 str_details1 = "???";
 640
 641                 if (len > 0)
 642                         {
 643                         switch (((const unsigned char*)buf)[0])
 644                                 {
 645                                 case 0:
 646                                         str_details1 = ", ERROR:";
 647                                         str_details2 = " ???";
 648                                         if (len >= 3)
 649                                                 {
 650                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 651
 652                                                 switch (err)
 653                                                         {
 654                                                 case 0x0001:
 655                                                         str_details2 = " NO-CIPHER-ERROR";
 656                                                         break;
 657                                                 case 0x0002:
 658                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 659                                                         break;
 660                                                 case 0x0004:
 661                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 662                                                         break;
 663                                                 case 0x0006:
 664                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 665                                                         break;
 666                                                         }
 667                                                 }
 668
 669                                         break;
 670                                 case 1:
 671                                         str_details1 = ", CLIENT-HELLO";
 672                                         break;
 673                                 case 2:
 674                                         str_details1 = ", CLIENT-MASTER-KEY";
 675                                         break;
 676                                 case 3:
 677                                         str_details1 = ", CLIENT-FINISHED";
 678                                         break;
 679                                 case 4:
 680                                         str_details1 = ", SERVER-HELLO";
 681                                         break;
 682                                 case 5:
 683                                         str_details1 = ", SERVER-VERIFY";
 684                                         break;
 685                                 case 6:
 686                                         str_details1 = ", SERVER-FINISHED";
 687                                         break;
 688                                 case 7:
 689                                         str_details1 = ", REQUEST-CERTIFICATE";
 690                                         break;
 691                                 case 8:
 692                                         str_details1 = ", CLIENT-CERTIFICATE";
 693                                         break;
 694                                 }
 695                         }
 696                 }
 697
 698         if (version == SSL3_VERSION ||
 699             version == TLS1_VERSION ||
 700             version == TLS1_1_VERSION ||
 701             version == TLS1_2_VERSION ||
 702             version == DTLS1_VERSION ||
 703             version == DTLS1_BAD_VER)
 704                 {
 705                 switch (content_type)
 706                         {
 707                 case 20:
 708                         str_content_type = "ChangeCipherSpec";
 709                         break;
 710                 case 21:
 711                         str_content_type = "Alert";
 712                         break;
 713                 case 22:
 714                         str_content_type = "Handshake";
 715                         break;
 716                         }
 717
 718                 if (content_type == 21) /* Alert */
 719                         {
 720                         str_details1 = ", ???";
 721
 722                         if (len == 2)
 723                                 {
 724                                 switch (((const unsigned char*)buf)[0])
 725                                         {
 726                                 case 1:
 727                                         str_details1 = ", warning";
 728                                         break;
 729                                 case 2:
 730                                         str_details1 = ", fatal";
 731                                         break;
 732                                         }
 733
 734                                 str_details2 = " ???";
 735                                 switch (((const unsigned char*)buf)[1])
 736                                         {
 737                                 case 0:
 738                                         str_details2 = " close_notify";
 739                                         break;
 740                                 case 10:
 741                                         str_details2 = " unexpected_message";
 742                                         break;
 743                                 case 20:
 744                                         str_details2 = " bad_record_mac";
 745                                         break;
 746                                 case 21:
 747                                         str_details2 = " decryption_failed";
 748                                         break;
 749                                 case 22:
 750                                         str_details2 = " record_overflow";
 751                                         break;
 752                                 case 30:
 753                                         str_details2 = " decompression_failure";
 754                                         break;
 755                                 case 40:
 756                                         str_details2 = " handshake_failure";
 757                                         break;
 758                                 case 42:
 759                                         str_details2 = " bad_certificate";
 760                                         break;
 761                                 case 43:
 762                                         str_details2 = " unsupported_certificate";
 763                                         break;
 764                                 case 44:
 765                                         str_details2 = " certificate_revoked";
 766                                         break;
 767                                 case 45:
 768                                         str_details2 = " certificate_expired";
 769                                         break;
 770                                 case 46:
 771                                         str_details2 = " certificate_unknown";
 772                                         break;
 773                                 case 47:
 774                                         str_details2 = " illegal_parameter";
 775                                         break;
 776                                 case 48:
 777                                         str_details2 = " unknown_ca";
 778                                         break;
 779                                 case 49:
 780                                         str_details2 = " access_denied";
 781                                         break;
 782                                 case 50:
 783                                         str_details2 = " decode_error";
 784                                         break;
 785                                 case 51:
 786                                         str_details2 = " decrypt_error";
 787                                         break;
 788                                 case 60:
 789                                         str_details2 = " export_restriction";
 790                                         break;
 791                                 case 70:
 792                                         str_details2 = " protocol_version";
 793                                         break;
 794                                 case 71:
 795                                         str_details2 = " insufficient_security";
 796                                         break;
 797                                 case 80:
 798                                         str_details2 = " internal_error";
 799                                         break;
 800                                 case 90:
 801                                         str_details2 = " user_canceled";
 802                                         break;
 803                                 case 100:
 804                                         str_details2 = " no_renegotiation";
 805                                         break;
 806                                 case 110:
 807                                         str_details2 = " unsupported_extension";
 808                                         break;
 809                                 case 111:
 810                                         str_details2 = " certificate_unobtainable";
 811                                         break;
 812                                 case 112:
 813                                         str_details2 = " unrecognized_name";
 814                                         break;
 815                                 case 113:
 816                                         str_details2 = " bad_certificate_status_response";
 817                                         break;
 818                                 case 114:
 819                                         str_details2 = " bad_certificate_hash_value";
 820                                         break;
 821                                 case 115:
 822                                         str_details2 = " unknown_psk_identity";
 823                                         break;
 824                                         }
 825                                 }
 826                         }
 827
 828                 if (content_type == 22) /* Handshake */
 829                         {
 830                         str_details1 = "???";
 831
 832                         if (len > 0)
 833                                 {
 834                                 switch (((const unsigned char*)buf)[0])
 835                                         {
 836                                 case 0:
 837                                         str_details1 = ", HelloRequest";
 838                                         break;
 839                                 case 1:
 840                                         str_details1 = ", ClientHello";
 841                                         break;
 842                                 case 2:
 843                                         str_details1 = ", ServerHello";
 844                                         break;
 845                                 case 3:
 846                                         str_details1 = ", HelloVerifyRequest";
 847                                         break;
 848                                 case 11:
 849                                         str_details1 = ", Certificate";
 850                                         break;
 851                                 case 12:
 852                                         str_details1 = ", ServerKeyExchange";
 853                                         break;
 854                                 case 13:
 855                                         str_details1 = ", CertificateRequest";
 856                                         break;
 857                                 case 14:
 858                                         str_details1 = ", ServerHelloDone";
 859                                         break;
 860                                 case 15:
 861                                         str_details1 = ", CertificateVerify";
 862                                         break;
 863                                 case 16:
 864                                         str_details1 = ", ClientKeyExchange";
 865                                         break;
 866                                 case 20:
 867                                         str_details1 = ", Finished";
 868                                         break;
 869                                         }
 870                                 }
 871                         }
 872
 873 #ifndef OPENSSL_NO_HEARTBEATS
 874                 if (content_type == 24) /* Heartbeat */
 875                         {
 876                         str_details1 = ", Heartbeat";
 877
 878                         if (len > 0)
 879                                 {
 880                                 switch (((const unsigned char*)buf)[0])
 881                                         {
 882                                 case 1:
 883                                         str_details1 = ", HeartbeatRequest";
 884                                         break;
 885                                 case 2:
 886                                         str_details1 = ", HeartbeatResponse";
 887                                         break;
 888                                         }
 889                                 }
 890                         }
 891 #endif
 892                 }
 893
 894         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);
 895
 896         if (len > 0)
 897                 {
 898                 size_t num, i;
 899
 900                 BIO_printf(bio, "   ");
 901                 num = len;
 902 #if 0
 903                 if (num > 16)
 904                         num = 16;
 905 #endif
 906                 for (i = 0; i < num; i++)
 907                         {
 908                         if (i % 16 == 0 && i > 0)
 909                                 BIO_printf(bio, "\n   ");
 910                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 911                         }
 912                 if (i < len)
 913                         BIO_printf(bio, " ...");
 914                 BIO_printf(bio, "\n");
 915                 }
 916         (void)BIO_flush(bio);
 917         }
 918
 919 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 920                                         unsigned char *data, int len,
 921                                         void *arg)
 922         {
 923         BIO *bio = arg;
 924         char *extname;
 925
 926         switch(type)
 927                 {
 928                 case TLSEXT_TYPE_server_name:
 929                 extname = "server name";
 930                 break;
 931
 932                 case TLSEXT_TYPE_max_fragment_length:
 933                 extname = "max fragment length";
 934                 break;
 935
 936                 case TLSEXT_TYPE_client_certificate_url:
 937                 extname = "client certificate URL";
 938                 break;
 939
 940                 case TLSEXT_TYPE_trusted_ca_keys:
 941                 extname = "trusted CA keys";
 942                 break;
 943
 944                 case TLSEXT_TYPE_truncated_hmac:
 945                 extname = "truncated HMAC";
 946                 break;
 947
 948                 case TLSEXT_TYPE_status_request:
 949                 extname = "status request";
 950                 break;
 951
 952                 case TLSEXT_TYPE_user_mapping:
 953                 extname = "user mapping";
 954                 break;
 955
 956                 case TLSEXT_TYPE_client_authz:
 957                 extname = "client authz";
 958                 break;
 959
 960                 case TLSEXT_TYPE_server_authz:
 961                 extname = "server authz";
 962                 break;
 963
 964                 case TLSEXT_TYPE_cert_type:
 965                 extname = "cert type";
 966                 break;
 967
 968                 case TLSEXT_TYPE_elliptic_curves:
 969                 extname = "elliptic curves";
 970                 break;
 971
 972                 case TLSEXT_TYPE_ec_point_formats:
 973                 extname = "EC point formats";
 974                 break;
 975
 976                 case TLSEXT_TYPE_srp:
 977                 extname = "SRP";
 978                 break;
 979
 980                 case TLSEXT_TYPE_signature_algorithms:
 981                 extname = "signature algorithms";
 982                 break;
 983
 984                 case TLSEXT_TYPE_use_srtp:
 985                 extname = "use SRTP";
 986                 break;
 987
 988                 case TLSEXT_TYPE_heartbeat:
 989                 extname = "heartbeat";
 990                 break;
 991
 992                 case TLSEXT_TYPE_session_ticket:
 993                 extname = "session ticket";
 994                 break;
 995
 996                 case TLSEXT_TYPE_renegotiate:
 997                 extname = "renegotiation info";
 998                 break;
 999
1000 #ifdef TLSEXT_TYPE_opaque_prf_input
1001                 case TLSEXT_TYPE_opaque_prf_input:
1002                 extname = "opaque PRF input";
1003                 break;
1004 #endif
1005 #ifdef TLSEXT_TYPE_next_proto_neg
1006                 case TLSEXT_TYPE_next_proto_neg:
1007                 extname = "next protocol";
1008                 break;
1009 #endif
1010
1011                 default:
1012                 extname = "unknown";
1013                 break;
1014
1015                 }
1016
1017         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1018                         client_server ? "server": "client",
1019                         extname, type, len);
1020         BIO_dump(bio, (char *)data, len);
1021         (void)BIO_flush(bio);
1022         }
1023
1024 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1025         {
1026         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1027         unsigned int length, resultlength;
1028         union {
1029                 struct sockaddr sa;
1030                 struct sockaddr_in s4;
1031 #if OPENSSL_USE_IPV6
1032                 struct sockaddr_in6 s6;
1033 #endif
1034         } peer;
1035
1036         /* Initialize a random secret */
1037         if (!cookie_initialized)
1038                 {
1039                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1040                         {
1041                         BIO_printf(bio_err,"error setting random cookie secret\n");
1042                         return 0;
1043                         }
1044                 cookie_initialized = 1;
1045                 }
1046
1047         /* Read peer information */
1048         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1049
1050         /* Create buffer with peer's address and port */
1051         length = 0;
1052         switch (peer.sa.sa_family)
1053                 {
1054         case AF_INET:
1055                 length += sizeof(struct in_addr);
1056                 length += sizeof(peer.s4.sin_port);
1057                 break;
1058 #if OPENSSL_USE_IPV6
1059         case AF_INET6:
1060                 length += sizeof(struct in6_addr);
1061                 length += sizeof(peer.s6.sin6_port);
1062                 break;
1063 #endif
1064         default:
1065                 OPENSSL_assert(0);
1066                 break;
1067                 }
1068         buffer = OPENSSL_malloc(length);
1069
1070         if (buffer == NULL)
1071                 {
1072                 BIO_printf(bio_err,"out of memory\n");
1073                 return 0;
1074                 }
1075
1076         switch (peer.sa.sa_family)
1077                 {
1078         case AF_INET:
1079                 memcpy(buffer,
1080                        &peer.s4.sin_port,
1081                        sizeof(peer.s4.sin_port));
1082                 memcpy(buffer + sizeof(peer.s4.sin_port),
1083                        &peer.s4.sin_addr,
1084                        sizeof(struct in_addr));
1085                 break;
1086 #if OPENSSL_USE_IPV6
1087         case AF_INET6:
1088                 memcpy(buffer,
1089                        &peer.s6.sin6_port,
1090                        sizeof(peer.s6.sin6_port));
1091                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1092                        &peer.s6.sin6_addr,
1093                        sizeof(struct in6_addr));
1094                 break;
1095 #endif
1096         default:
1097                 OPENSSL_assert(0);
1098                 break;
1099                 }
1100
1101         /* Calculate HMAC of buffer using the secret */
1102         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1103              buffer, length, result, &resultlength);
1104         OPENSSL_free(buffer);
1105
1106         memcpy(cookie, result, resultlength);
1107         *cookie_len = resultlength;
1108
1109         return 1;
1110         }
1111
1112 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1113         {
1114         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1115         unsigned int length, resultlength;
1116         union {
1117                 struct sockaddr sa;
1118                 struct sockaddr_in s4;
1119 #if OPENSSL_USE_IPV6
1120                 struct sockaddr_in6 s6;
1121 #endif
1122         } peer;
1123
1124         /* If secret isn't initialized yet, the cookie can't be valid */
1125         if (!cookie_initialized)
1126                 return 0;
1127
1128         /* Read peer information */
1129         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1130
1131         /* Create buffer with peer's address and port */
1132         length = 0;
1133         switch (peer.sa.sa_family)
1134                 {
1135         case AF_INET:
1136                 length += sizeof(struct in_addr);
1137                 length += sizeof(peer.s4.sin_port);
1138                 break;
1139 #if OPENSSL_USE_IPV6
1140         case AF_INET6:
1141                 length += sizeof(struct in6_addr);
1142                 length += sizeof(peer.s6.sin6_port);
1143                 break;
1144 #endif
1145         default:
1146                 OPENSSL_assert(0);
1147                 break;
1148                 }
1149         buffer = OPENSSL_malloc(length);
1150
1151         if (buffer == NULL)
1152                 {
1153                 BIO_printf(bio_err,"out of memory\n");
1154                 return 0;
1155                 }
1156
1157         switch (peer.sa.sa_family)
1158                 {
1159         case AF_INET:
1160                 memcpy(buffer,
1161                        &peer.s4.sin_port,
1162                        sizeof(peer.s4.sin_port));
1163                 memcpy(buffer + sizeof(peer.s4.sin_port),
1164                        &peer.s4.sin_addr,
1165                        sizeof(struct in_addr));
1166                 break;
1167 #if OPENSSL_USE_IPV6
1168         case AF_INET6:
1169                 memcpy(buffer,
1170                        &peer.s6.sin6_port,
1171                        sizeof(peer.s6.sin6_port));
1172                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1173                        &peer.s6.sin6_addr,
1174                        sizeof(struct in6_addr));
1175                 break;
1176 #endif
1177         default:
1178                 OPENSSL_assert(0);
1179                 break;
1180                 }
1181
1182         /* Calculate HMAC of buffer using the secret */
1183         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1184              buffer, length, result, &resultlength);
1185         OPENSSL_free(buffer);
1186
1187         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1188                 return 1;
1189
1190         return 0;
1191         }
1192
1193 /* Example of extended certificate handling. Where the standard support
1194  * of one certificate per algorithm is not sufficient an application
1195  * can decide which certificate(s) to use at runtime based on whatever
1196  * criteria it deems appropriate.
1197  */
1198
1199 /* Linked list of certificates, keys and chains */
1200 struct  ssl_excert_st
1201         {
1202         int certform;
1203         const char *certfile;
1204         int keyform;
1205         const char *keyfile;
1206         const char *chainfile;
1207         X509 *cert;
1208         EVP_PKEY *key;
1209         STACK_OF(X509) *chain;
1210         int build_chain;
1211         struct ssl_excert_st *next, *prev;
1212         };
1213
1214 struct chain_flags
1215         {
1216         int flag;
1217         const char *name;
1218         };
1219
1220 struct chain_flags chain_flags_list[] =
1221         {
1222                 {CERT_PKEY_VALID, "Overall Validity"},
1223                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1224                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1225                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1226                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1227                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1228                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1229                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1230                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1231                 {0, NULL}
1232         };
1233
1234
1235 static void print_chain_flags(BIO *out, int flags)
1236         {
1237         struct chain_flags *ctmp = chain_flags_list;
1238         while(ctmp->name)
1239                 {
1240                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1241                                 flags & ctmp->flag ? "OK" : "NOT OK");
1242                 ctmp++;
1243                 }
1244         }
1245
1246 /* Very basic selection callback: just use any certificate chain
1247  * reported as valid. More sophisticated could prioritise according
1248  * to local policy.
1249  */
1250 static int set_cert_cb(SSL *ssl, void *arg)
1251         {
1252         int i, rv;
1253         SSL_EXCERT *exc = arg;
1254         SSL_certs_clear(ssl);
1255
1256         if (!exc)
1257                 return 1;
1258
1259         /* Go to end of list and traverse backwards since we prepend
1260          * newer entries this retains the original order.
1261          */
1262         while (exc->next)
1263                 exc = exc->next;
1264
1265         i = 0;
1266
1267         while(exc)
1268                 {
1269                 i++;
1270                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1271                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1272                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1273                                                         XN_FLAG_ONELINE);
1274                 BIO_puts(bio_err, "\n");
1275
1276                 print_chain_flags(bio_err, rv);
1277                 if (rv & CERT_PKEY_VALID)
1278                         {
1279                         SSL_use_certificate(ssl, exc->cert);
1280                         SSL_use_PrivateKey(ssl, exc->key);
1281                         /* NB: we wouldn't normally do this as it is
1282                          * not efficient building chains on each connection
1283                          * better to cache the chain in advance.
1284                          */
1285                         if (exc->build_chain)
1286                                 {
1287                                 if (!SSL_build_cert_chain(ssl, 0))
1288                                         return 0;
1289                                 }
1290                         else if (exc->chain)
1291                                 SSL_set1_chain(ssl, exc->chain);
1292                         }
1293                 exc = exc->prev;
1294                 }
1295         return 1;
1296         }
1297
1298 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1299         {
1300         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1301         }
1302
1303 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1304         {
1305         SSL_EXCERT *exc;
1306         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1307         if (!exc)
1308                 return 0;
1309         exc->certfile = NULL;
1310         exc->keyfile = NULL;
1311         exc->chainfile = NULL;
1312         exc->cert = NULL;
1313         exc->key = NULL;
1314         exc->chain = NULL;
1315         exc->prev = NULL;
1316         exc->build_chain = 0;
1317
1318         exc->next = *pexc;
1319         *pexc = exc;
1320
1321         if (exc->next)
1322                 {
1323                 exc->certform = exc->next->certform;
1324                 exc->keyform = exc->next->keyform;
1325                 exc->next->prev = exc;
1326                 }
1327         else
1328                 {
1329                 exc->certform = FORMAT_PEM;
1330                 exc->keyform = FORMAT_PEM;
1331                 }
1332         return 1;
1333
1334         }
1335
1336 void ssl_excert_free(SSL_EXCERT *exc)
1337         {
1338         SSL_EXCERT *curr;
1339         while (exc)
1340                 {
1341                 if (exc->cert)
1342                         X509_free(exc->cert);
1343                 if (exc->key)
1344                         EVP_PKEY_free(exc->key);
1345                 if (exc->chain)
1346                         sk_X509_pop_free(exc->chain, X509_free);
1347                 curr = exc;
1348                 exc = exc->next;
1349                 OPENSSL_free(curr);
1350                 }
1351         }
1352
1353 int load_excert(SSL_EXCERT **pexc, BIO *err)
1354         {
1355         SSL_EXCERT *exc = *pexc;
1356         if (!exc)
1357                 return 1;
1358         /* If nothing in list, free and set to NULL */
1359         if (!exc->certfile && !exc->next)
1360                 {
1361                 ssl_excert_free(exc);
1362                 *pexc = NULL;
1363                 return 1;
1364                 }
1365         for(; exc; exc=exc->next)
1366                 {
1367                 if (!exc->certfile)
1368                         {
1369                         BIO_printf(err, "Missing filename\n");
1370                         return 0;
1371                         }
1372                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1373                                         NULL, NULL, "Server Certificate");
1374                 if (!exc->cert)
1375                         return 0;
1376                 if (exc->keyfile)
1377                         exc->keyfile = exc->certfile;
1378                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1379                                         NULL, NULL, "Server Certificate");
1380                 if (!exc->key)
1381                         return 0;
1382                 if (exc->chainfile)
1383                         {
1384                         exc->chain = load_certs(err,
1385                                                 exc->chainfile, FORMAT_PEM,
1386                                                 NULL, NULL,
1387                                                 "Server Chain");
1388                         if (!exc->chainfile)
1389                                 return 0;
1390                         }
1391                 }
1392         return 1;
1393         }
1394
1395
1396 int args_excert(char ***pargs, int *pargc,
1397                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1398         {
1399         char *arg = **pargs, *argn = (*pargs)[1];
1400         SSL_EXCERT *exc = *pexc;
1401         int narg = 2;
1402         if (!exc)
1403                 {
1404                 if (ssl_excert_prepend(&exc))
1405                         *pexc = exc;
1406                 else
1407                         {
1408                         BIO_printf(err, "Error initialising xcert\n");
1409                         *badarg = 1;
1410                         goto err;
1411                         }
1412                 }
1413         if (strcmp(arg, "-xcert") == 0)
1414                 {
1415                 if (!argn)
1416                         {
1417                         *badarg = 1;
1418                         return 1;
1419                         }
1420                 if (exc->certfile && !ssl_excert_prepend(&exc))
1421                         {
1422                         BIO_printf(err, "Error adding xcert\n");
1423                         *badarg = 1;
1424                         goto err;
1425                         }
1426                 exc->certfile = argn;
1427                 }
1428         else if (strcmp(arg,"-xkey") == 0)
1429                 {
1430                 if (!argn)
1431                         {
1432                         *badarg = 1;
1433                         return 1;
1434                         }
1435                 if (exc->keyfile)
1436                         {
1437                         BIO_printf(err, "Key already specified\n");
1438                         *badarg = 1;
1439                         return 1;
1440                         }
1441                 exc->keyfile = argn;
1442                 }
1443         else if (strcmp(arg,"-xchain") == 0)
1444                 {
1445                 if (!argn)
1446                         {
1447                         *badarg = 1;
1448                         return 1;
1449                         }
1450                 if (exc->chainfile)
1451                         {
1452                         BIO_printf(err, "Chain already specified\n");
1453                         *badarg = 1;
1454                         return 1;
1455                         }
1456                 exc->chainfile = argn;
1457                 }
1458         else if (strcmp(arg,"-xchain_build") == 0)
1459                 {
1460                 narg = 1;
1461                 exc->build_chain = 1;
1462                 }
1463         else if (strcmp(arg,"-xcertform") == 0)
1464                 {
1465                 if (!argn)
1466                         {
1467                         *badarg = 1;
1468                         goto err;
1469                         }
1470                 exc->certform = str2fmt(argn);
1471                 }
1472         else if (strcmp(arg,"-xkeyform") == 0)
1473                 {
1474                 if (!argn)
1475                         {
1476                         *badarg = 1;
1477                         goto err;
1478                         }
1479                 exc->keyform = str2fmt(argn);
1480                 }
1481         else
1482                 return 0;
1483
1484         (*pargs) += narg;
1485
1486         if (pargc)
1487                 *pargc -= narg;
1488
1489         *pexc = exc;
1490
1491         return 1;
1492
1493         err:
1494         ERR_print_errors(err);
1495         ssl_excert_free(exc);
1496         *pexc = NULL;
1497         return 1;
1498         }
1499
1500 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1501                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1502         {
1503         char *arg = **pargs, *argn = (*pargs)[1];
1504         int rv;
1505
1506         /* Attempt to run SSL configuration command */
1507         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1508         /* If parameter not recognised just return */
1509         if (rv == 0)
1510                 return 0;
1511         /* see if missing argument error */
1512         if (rv == -3)
1513                 {
1514                 BIO_printf(err, "%s needs an argument\n", arg);
1515                 *badarg = 1;
1516                 goto end;
1517                 }
1518         /* Check for some other error */
1519         if (rv < 0)
1520                 {
1521                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1522                                                 arg, argn ? argn : "");
1523                 *badarg = 1;
1524                 goto end;
1525                 }
1526         /* Store command and argument */
1527         /* If only one argument processed store value as NULL */
1528         if (rv == 1)
1529                 argn = NULL;
1530         if (!*pstr)
1531                 *pstr = sk_OPENSSL_STRING_new_null();
1532         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1533                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1534                 {
1535                 BIO_puts(err, "Memory allocation failure\n");
1536                 goto end;
1537                 }
1538
1539         end:
1540         if (*badarg)
1541                 ERR_print_errors(err);
1542
1543         return 1;
1544         }
1545
1546 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1547                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1548         {
1549         int i;
1550         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1551         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1552                 {
1553                 const char *param = sk_OPENSSL_STRING_value(str, i);
1554                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1555                 /* If no_ecdhe or named curve already specified don't need
1556                  * a default.
1557                  */
1558                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1559                         no_ecdhe = 1;
1560 #ifndef OPENSSL_NO_JPAKE
1561                 if (!no_jpake && !strcmp(param, "-cipher"))
1562                         {
1563                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1564                         return 0;
1565                         }
1566 #endif
1567                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1568                         {
1569                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1570                                                 param, value ? value : "");
1571                         ERR_print_errors(err);
1572                         return 0;
1573                         }
1574                 }
1575         /* This is a special case to keep existing s_server functionality:
1576          * if we don't have any curve specified *and* we haven't disabled
1577          * ECDHE then use P-256.
1578          */
1579         if (!no_ecdhe)
1580                 {
1581                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1582                         {
1583                         BIO_puts(err, "Error setting EC curve\n");
1584                         ERR_print_errors(err);
1585                         return 0;
1586                         }
1587                 }
1588 #ifndef OPENSSL_NO_JPAKE
1589         if (!no_jpake)
1590                 {
1591                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1592                         {
1593                         BIO_puts(err, "Error setting cipher to PSK\n");
1594                         ERR_print_errors(err);
1595                         return 0;
1596                         }
1597                 }
1598 #endif
1599         return 1;
1600         }
1601
1602 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1603         {
1604         X509_CRL *crl;
1605         int i;
1606         if (crls)
1607                 {
1608                 for (i = 0; i < sk_X509_CRL_num(crls); i++)
1609                         {
1610                         crl = sk_X509_CRL_value(crls, i);
1611                         X509_STORE_add_crl(st, crl);
1612                         }
1613                 }
1614         return 1;
1615         }
1616
1617 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls)
1618         {
1619         X509_STORE *st;
1620         if (crls)
1621                 {
1622                 st = SSL_CTX_get_cert_store(ctx);
1623                 add_crls_store(st, crls);
1624                 }
1625         return 1;
1626         }
1627
1628 int ssl_load_stores(SSL_CTX *ctx,
1629                         const char *vfyCApath, const char *vfyCAfile,
1630                         const char *chCApath, const char *chCAfile,
1631                         STACK_OF(X509_CRL) *crls)
1632         {
1633         X509_STORE *vfy = NULL, *ch = NULL;
1634         int rv = 0;
1635         if (vfyCApath || vfyCAfile)
1636                 {
1637                 vfy = X509_STORE_new();
1638                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1639                         goto err;
1640                 add_crls_store(vfy, crls);
1641                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1642                 }
1643         if (chCApath || chCAfile)
1644                 {
1645                 ch = X509_STORE_new();
1646                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1647                         goto err;
1648                 /*X509_STORE_set_verify_cb(ch, verify_callback);*/
1649                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1650                 }
1651         rv = 1;
1652         err:
1653         if (vfy)
1654                 X509_STORE_free(vfy);
1655         if (ch)
1656                 X509_STORE_free(ch);
1657         return rv;
1658         }