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_quiet=0;
 129 int verify_error=X509_V_OK;
 130 int verify_return_error=0;
 131 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
 132 int cookie_initialized=0;
 133
 134 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
 135         {
 136         X509 *err_cert;
 137         int err,depth;
 138
 139         err_cert=X509_STORE_CTX_get_current_cert(ctx);
 140         err=    X509_STORE_CTX_get_error(ctx);
 141         depth=  X509_STORE_CTX_get_error_depth(ctx);
 142
 143         if (!verify_quiet || !ok)
 144                 {
 145                 BIO_printf(bio_err,"depth=%d ",depth);
 146                 if (err_cert)
 147                         {
 148                         X509_NAME_print_ex(bio_err,
 149                                         X509_get_subject_name(err_cert),
 150                                         0, XN_FLAG_ONELINE);
 151                         BIO_puts(bio_err, "\n");
 152                         }
 153                 else
 154                         BIO_puts(bio_err, "<no cert>\n");
 155                 }
 156         if (!ok)
 157                 {
 158                 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
 159                         X509_verify_cert_error_string(err));
 160                 if (verify_depth >= depth)
 161                         {
 162                         if (!verify_return_error)
 163                                 ok=1;
 164                         verify_error=X509_V_OK;
 165                         }
 166                 else
 167                         {
 168                         ok=0;
 169                         verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
 170                         }
 171                 }
 172         switch (err)
 173                 {
 174         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
 175                 BIO_puts(bio_err,"issuer= ");
 176                 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
 177                                         0, XN_FLAG_ONELINE);
 178                 BIO_puts(bio_err, "\n");
 179                 break;
 180         case X509_V_ERR_CERT_NOT_YET_VALID:
 181         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
 182                 BIO_printf(bio_err,"notBefore=");
 183                 ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
 184                 BIO_printf(bio_err,"\n");
 185                 break;
 186         case X509_V_ERR_CERT_HAS_EXPIRED:
 187         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
 188                 BIO_printf(bio_err,"notAfter=");
 189                 ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
 190                 BIO_printf(bio_err,"\n");
 191                 break;
 192         case X509_V_ERR_NO_EXPLICIT_POLICY:
 193                 if (!verify_quiet)
 194                         policies_print(bio_err, ctx);
 195                 break;
 196                 }
 197         if (err == X509_V_OK && ok == 2 && !verify_quiet)
 198                 policies_print(bio_err, ctx);
 199         if (ok && !verify_quiet)
 200                 BIO_printf(bio_err,"verify return:%d\n",ok);
 201         return(ok);
 202         }
 203
 204 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
 205         {
 206         if (cert_file != NULL)
 207                 {
 208                 /*
 209                 SSL *ssl;
 210                 X509 *x509;
 211                 */
 212
 213                 if (SSL_CTX_use_certificate_file(ctx,cert_file,
 214                         SSL_FILETYPE_PEM) <= 0)
 215                         {
 216                         BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
 217                         ERR_print_errors(bio_err);
 218                         return(0);
 219                         }
 220                 if (key_file == NULL) key_file=cert_file;
 221                 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
 222                         SSL_FILETYPE_PEM) <= 0)
 223                         {
 224                         BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
 225                         ERR_print_errors(bio_err);
 226                         return(0);
 227                         }
 228
 229                 /*
 230                 In theory this is no longer needed
 231                 ssl=SSL_new(ctx);
 232                 x509=SSL_get_certificate(ssl);
 233
 234                 if (x509 != NULL) {
 235                         EVP_PKEY *pktmp;
 236                         pktmp = X509_get_pubkey(x509);
 237                         EVP_PKEY_copy_parameters(pktmp,
 238                                                 SSL_get_privatekey(ssl));
 239                         EVP_PKEY_free(pktmp);
 240                 }
 241                 SSL_free(ssl);
 242                 */
 243
 244                 /* If we are using DSA, we can copy the parameters from
 245                  * the private key */
 246
 247
 248                 /* Now we know that a key and cert have been set against
 249                  * the SSL context */
 250                 if (!SSL_CTX_check_private_key(ctx))
 251                         {
 252                         BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 253                         return(0);
 254                         }
 255                 }
 256         return(1);
 257         }
 258
 259 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
 260                        STACK_OF(X509) *chain, int build_chain)
 261         {
 262         if (cert == NULL)
 263                 return 1;
 264         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
 265                 {
 266                 BIO_printf(bio_err,"error setting certificate\n");
 267                 ERR_print_errors(bio_err);
 268                 return 0;
 269                 }
 270
 271         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
 272                 {
 273                 BIO_printf(bio_err,"error setting private key\n");
 274                 ERR_print_errors(bio_err);
 275                 return 0;
 276                 }
 277
 278         /* Now we know that a key and cert have been set against
 279          * the SSL context */
 280         if (!SSL_CTX_check_private_key(ctx))
 281                 {
 282                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 283                 return 0;
 284                 }
 285         if (chain && !SSL_CTX_set1_chain(ctx, chain))
 286                 {
 287                 BIO_printf(bio_err,"error setting certificate chain\n");
 288                 ERR_print_errors(bio_err);
 289                 return 0;
 290                 }
 291         if (!chain && build_chain && !SSL_CTX_build_cert_chain(ctx, 0))
 292                 {
 293                 BIO_printf(bio_err,"error building certificate chain\n");
 294                 ERR_print_errors(bio_err);
 295                 return 0;
 296                 }
 297         return 1;
 298         }
 299
 300 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
 301         {
 302         const unsigned char *p;
 303         int i;
 304         int cert_type_num = SSL_get0_certificate_types(s, &p);
 305         if (!cert_type_num)
 306                 return;
 307         BIO_puts(bio, "Client Certificate Types: ");
 308         for (i = 0; i < cert_type_num; i++)
 309                 {
 310                 unsigned char cert_type = p[i];
 311                 char *cname;
 312                 switch(cert_type)
 313                         {
 314                 case TLS_CT_RSA_SIGN:
 315                         cname = "RSA sign";
 316                         break;
 317
 318                 case TLS_CT_DSS_SIGN:
 319                         cname = "DSA sign";
 320                         break;
 321
 322                 case TLS_CT_RSA_FIXED_DH:
 323                         cname = "RSA fixed DH";
 324                         break;
 325
 326                 case TLS_CT_DSS_FIXED_DH:
 327                         cname = "DSS fixed DH";
 328                         break;
 329
 330                 case TLS_CT_ECDSA_SIGN:
 331                         cname = "ECDSA sign";
 332                         break;
 333
 334                 case TLS_CT_RSA_FIXED_ECDH:
 335                         cname = "RSA fixed ECDH";
 336                         break;
 337
 338                 case TLS_CT_ECDSA_FIXED_ECDH:
 339                         cname = "ECDSA fixed ECDH";
 340                         break;
 341
 342                 case TLS_CT_GOST94_SIGN:
 343                         cname = "GOST94 Sign";
 344                         break;
 345
 346                 case TLS_CT_GOST01_SIGN:
 347                         cname = "GOST01 Sign";
 348                         break;
 349
 350                 default:
 351                          cname = NULL;
 352                         }
 353
 354                 if (i)
 355                         BIO_puts(bio, ", ");
 356
 357                 if (cname)
 358                         BIO_puts(bio, cname);
 359                 else
 360                         BIO_printf(bio, "UNKNOWN (%d),", cert_type);
 361                 }
 362         BIO_puts(bio, "\n");
 363         }
 364
 365 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
 366         {
 367         int i, nsig, client;
 368         client = SSL_is_server(s) ? 0 : 1;
 369         if (shared)
 370                 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
 371                                                         NULL, NULL);
 372         else
 373                 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 374         if (nsig == 0)
 375                 return 1;
 376
 377         if (shared)
 378                 BIO_puts(out, "Shared ");
 379
 380         if (client)
 381                 BIO_puts(out, "Requested ");
 382         BIO_puts(out, "Signature Algorithms: ");
 383         for (i = 0; i < nsig; i++)
 384                 {
 385                 int hash_nid, sign_nid;
 386                 unsigned char rhash, rsign;
 387                 const char *sstr = NULL;
 388                 if (shared)
 389                         SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 390                                                         &rsign, &rhash);
 391                 else
 392                         SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 393                                                         &rsign, &rhash);
 394                 if (i)
 395                         BIO_puts(out, ":");
 396                 if (sign_nid == EVP_PKEY_RSA)
 397                         sstr = "RSA";
 398                 else if(sign_nid == EVP_PKEY_DSA)
 399                         sstr = "DSA";
 400                 else if(sign_nid == EVP_PKEY_EC)
 401                         sstr = "ECDSA";
 402                 if (sstr)
 403                         BIO_printf(out,"%s+", sstr);
 404                 else
 405                         BIO_printf(out,"0x%02X+", (int)rsign);
 406                 if (hash_nid != NID_undef)
 407                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
 408                 else
 409                         BIO_printf(out,"0x%02X", (int)rhash);
 410                 }
 411         BIO_puts(out, "\n");
 412         return 1;
 413         }
 414
 415 int ssl_print_sigalgs(BIO *out, SSL *s)
 416         {
 417         int mdnid;
 418         if (!SSL_is_server(s))
 419                 ssl_print_client_cert_types(out, s);
 420         do_print_sigalgs(out, s, 0);
 421         do_print_sigalgs(out, s, 1);
 422         if (SSL_get_peer_signature_nid(s, &mdnid))
 423                 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
 424         return 1;
 425         }
 426
 427 int ssl_print_point_formats(BIO *out, SSL *s)
 428         {
 429         int i, nformats;
 430         const char *pformats;
 431         nformats = SSL_get0_ec_point_formats(s, &pformats);
 432         if (nformats <= 0)
 433                 return 1;
 434         BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
 435         for (i = 0; i < nformats; i++, pformats++)
 436                 {
 437                 if (i)
 438                         BIO_puts(out, ":");
 439                 switch(*pformats)
 440                         {
 441                 case TLSEXT_ECPOINTFORMAT_uncompressed:
 442                         BIO_puts(out, "uncompressed");
 443                         break;
 444
 445                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
 446                         BIO_puts(out, "ansiX962_compressed_prime");
 447                         break;
 448
 449                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
 450                         BIO_puts(out, "ansiX962_compressed_char2");
 451                         break;
 452
 453                 default:
 454                         BIO_printf(out, "unknown(%d)", (int)*pformats);
 455                         break;
 456
 457                         }
 458                 }
 459         if (nformats <= 0)
 460                 BIO_puts(out, "NONE");
 461         BIO_puts(out, "\n");
 462         return 1;
 463         }
 464
 465 int ssl_print_curves(BIO *out, SSL *s, int noshared)
 466         {
 467         int i, ncurves, *curves, nid;
 468         const char *cname;
 469         ncurves = SSL_get1_curves(s, NULL);
 470         if (ncurves <= 0)
 471                 return 1;
 472         curves = OPENSSL_malloc(ncurves * sizeof(int));
 473         SSL_get1_curves(s, curves);
 474
 475         BIO_puts(out, "Supported Elliptic Curves: ");
 476         for (i = 0; i < ncurves; i++)
 477                 {
 478                 if (i)
 479                         BIO_puts(out, ":");
 480                 nid = curves[i];
 481                 /* If unrecognised print out hex version */
 482                 if (nid & TLSEXT_nid_unknown)
 483                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 484                 else
 485                         {
 486                         /* Use NIST name for curve if it exists */
 487                         cname = EC_curve_nid2nist(nid);
 488                         if (!cname)
 489                                 cname = OBJ_nid2sn(nid);
 490                         BIO_printf(out, "%s", cname);
 491                         }
 492                 }
 493         if (ncurves == 0)
 494                 BIO_puts(out, "NONE");
 495         OPENSSL_free(curves);
 496         if (noshared)
 497                 {
 498                 BIO_puts(out, "\n");
 499                 return 1;
 500                 }
 501         BIO_puts(out, "\nShared Elliptic curves: ");
 502         ncurves = SSL_get_shared_curve(s, -1);
 503         for (i = 0; i < ncurves; i++)
 504                 {
 505                 if (i)
 506                         BIO_puts(out, ":");
 507                 nid = SSL_get_shared_curve(s, i);
 508                 cname = EC_curve_nid2nist(nid);
 509                 if (!cname)
 510                         cname = OBJ_nid2sn(nid);
 511                 BIO_printf(out, "%s", cname);
 512                 }
 513         if (ncurves == 0)
 514                 BIO_puts(out, "NONE");
 515         BIO_puts(out, "\n");
 516         return 1;
 517         }
 518
 519 int ssl_print_tmp_key(BIO *out, SSL *s)
 520         {
 521         EVP_PKEY *key;
 522         if (!SSL_get_server_tmp_key(s, &key))
 523                 return 1;
 524         BIO_puts(out, "Server Temp Key: ");
 525         switch (EVP_PKEY_id(key))
 526                 {
 527         case EVP_PKEY_RSA:
 528                 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
 529                 break;
 530
 531         case EVP_PKEY_DH:
 532                 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
 533                 break;
 534
 535         case EVP_PKEY_EC:
 536                         {
 537                         EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
 538                         int nid;
 539                         const char *cname;
 540                         nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
 541                         EC_KEY_free(ec);
 542                         cname = EC_curve_nid2nist(nid);
 543                         if (!cname)
 544                                 cname = OBJ_nid2sn(nid);
 545                         BIO_printf(out, "ECDH, %s, %d bits\n",
 546                                                 cname, EVP_PKEY_bits(key));
 547                         }
 548                 }
 549         EVP_PKEY_free(key);
 550         return 1;
 551         }
 552
 553
 554 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 555                                    int argi, long argl, long ret)
 556         {
 557         BIO *out;
 558
 559         out=(BIO *)BIO_get_callback_arg(bio);
 560         if (out == NULL) return(ret);
 561
 562         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 563                 {
 564                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 565                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 566                 BIO_dump(out,argp,(int)ret);
 567                 return(ret);
 568                 }
 569         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 570                 {
 571                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 572                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 573                 BIO_dump(out,argp,(int)ret);
 574                 }
 575         return(ret);
 576         }
 577
 578 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 579         {
 580         const char *str;
 581         int w;
 582
 583         w=where& ~SSL_ST_MASK;
 584
 585         if (w & SSL_ST_CONNECT) str="SSL_connect";
 586         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 587         else str="undefined";
 588
 589         if (where & SSL_CB_LOOP)
 590                 {
 591                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 592                 }
 593         else if (where & SSL_CB_ALERT)
 594                 {
 595                 str=(where & SSL_CB_READ)?"read":"write";
 596                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 597                         str,
 598                         SSL_alert_type_string_long(ret),
 599                         SSL_alert_desc_string_long(ret));
 600                 }
 601         else if (where & SSL_CB_EXIT)
 602                 {
 603                 if (ret == 0)
 604                         BIO_printf(bio_err,"%s:failed in %s\n",
 605                                 str,SSL_state_string_long(s));
 606                 else if (ret < 0)
 607                         {
 608                         BIO_printf(bio_err,"%s:error in %s\n",
 609                                 str,SSL_state_string_long(s));
 610                         }
 611                 }
 612         }
 613
 614
 615 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 616         {
 617         BIO *bio = arg;
 618         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 619
 620         str_write_p = write_p ? ">>>" : "<<<";
 621
 622         switch (version)
 623                 {
 624         case SSL2_VERSION:
 625                 str_version = "SSL 2.0";
 626                 break;
 627         case SSL3_VERSION:
 628                 str_version = "SSL 3.0 ";
 629                 break;
 630         case TLS1_VERSION:
 631                 str_version = "TLS 1.0 ";
 632                 break;
 633         case TLS1_1_VERSION:
 634                 str_version = "TLS 1.1 ";
 635                 break;
 636         case TLS1_2_VERSION:
 637                 str_version = "TLS 1.2 ";
 638                 break;
 639         case DTLS1_VERSION:
 640                 str_version = "DTLS 1.0 ";
 641                 break;
 642         case DTLS1_BAD_VER:
 643                 str_version = "DTLS 1.0 (bad) ";
 644                 break;
 645         default:
 646                 str_version = "???";
 647                 }
 648
 649         if (version == SSL2_VERSION)
 650                 {
 651                 str_details1 = "???";
 652
 653                 if (len > 0)
 654                         {
 655                         switch (((const unsigned char*)buf)[0])
 656                                 {
 657                                 case 0:
 658                                         str_details1 = ", ERROR:";
 659                                         str_details2 = " ???";
 660                                         if (len >= 3)
 661                                                 {
 662                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 663
 664                                                 switch (err)
 665                                                         {
 666                                                 case 0x0001:
 667                                                         str_details2 = " NO-CIPHER-ERROR";
 668                                                         break;
 669                                                 case 0x0002:
 670                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 671                                                         break;
 672                                                 case 0x0004:
 673                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 674                                                         break;
 675                                                 case 0x0006:
 676                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 677                                                         break;
 678                                                         }
 679                                                 }
 680
 681                                         break;
 682                                 case 1:
 683                                         str_details1 = ", CLIENT-HELLO";
 684                                         break;
 685                                 case 2:
 686                                         str_details1 = ", CLIENT-MASTER-KEY";
 687                                         break;
 688                                 case 3:
 689                                         str_details1 = ", CLIENT-FINISHED";
 690                                         break;
 691                                 case 4:
 692                                         str_details1 = ", SERVER-HELLO";
 693                                         break;
 694                                 case 5:
 695                                         str_details1 = ", SERVER-VERIFY";
 696                                         break;
 697                                 case 6:
 698                                         str_details1 = ", SERVER-FINISHED";
 699                                         break;
 700                                 case 7:
 701                                         str_details1 = ", REQUEST-CERTIFICATE";
 702                                         break;
 703                                 case 8:
 704                                         str_details1 = ", CLIENT-CERTIFICATE";
 705                                         break;
 706                                 }
 707                         }
 708                 }
 709
 710         if (version == SSL3_VERSION ||
 711             version == TLS1_VERSION ||
 712             version == TLS1_1_VERSION ||
 713             version == TLS1_2_VERSION ||
 714             version == DTLS1_VERSION ||
 715             version == DTLS1_BAD_VER)
 716                 {
 717                 switch (content_type)
 718                         {
 719                 case 20:
 720                         str_content_type = "ChangeCipherSpec";
 721                         break;
 722                 case 21:
 723                         str_content_type = "Alert";
 724                         break;
 725                 case 22:
 726                         str_content_type = "Handshake";
 727                         break;
 728                         }
 729
 730                 if (content_type == 21) /* Alert */
 731                         {
 732                         str_details1 = ", ???";
 733
 734                         if (len == 2)
 735                                 {
 736                                 switch (((const unsigned char*)buf)[0])
 737                                         {
 738                                 case 1:
 739                                         str_details1 = ", warning";
 740                                         break;
 741                                 case 2:
 742                                         str_details1 = ", fatal";
 743                                         break;
 744                                         }
 745
 746                                 str_details2 = " ???";
 747                                 switch (((const unsigned char*)buf)[1])
 748                                         {
 749                                 case 0:
 750                                         str_details2 = " close_notify";
 751                                         break;
 752                                 case 10:
 753                                         str_details2 = " unexpected_message";
 754                                         break;
 755                                 case 20:
 756                                         str_details2 = " bad_record_mac";
 757                                         break;
 758                                 case 21:
 759                                         str_details2 = " decryption_failed";
 760                                         break;
 761                                 case 22:
 762                                         str_details2 = " record_overflow";
 763                                         break;
 764                                 case 30:
 765                                         str_details2 = " decompression_failure";
 766                                         break;
 767                                 case 40:
 768                                         str_details2 = " handshake_failure";
 769                                         break;
 770                                 case 42:
 771                                         str_details2 = " bad_certificate";
 772                                         break;
 773                                 case 43:
 774                                         str_details2 = " unsupported_certificate";
 775                                         break;
 776                                 case 44:
 777                                         str_details2 = " certificate_revoked";
 778                                         break;
 779                                 case 45:
 780                                         str_details2 = " certificate_expired";
 781                                         break;
 782                                 case 46:
 783                                         str_details2 = " certificate_unknown";
 784                                         break;
 785                                 case 47:
 786                                         str_details2 = " illegal_parameter";
 787                                         break;
 788                                 case 48:
 789                                         str_details2 = " unknown_ca";
 790                                         break;
 791                                 case 49:
 792                                         str_details2 = " access_denied";
 793                                         break;
 794                                 case 50:
 795                                         str_details2 = " decode_error";
 796                                         break;
 797                                 case 51:
 798                                         str_details2 = " decrypt_error";
 799                                         break;
 800                                 case 60:
 801                                         str_details2 = " export_restriction";
 802                                         break;
 803                                 case 70:
 804                                         str_details2 = " protocol_version";
 805                                         break;
 806                                 case 71:
 807                                         str_details2 = " insufficient_security";
 808                                         break;
 809                                 case 80:
 810                                         str_details2 = " internal_error";
 811                                         break;
 812                                 case 90:
 813                                         str_details2 = " user_canceled";
 814                                         break;
 815                                 case 100:
 816                                         str_details2 = " no_renegotiation";
 817                                         break;
 818                                 case 110:
 819                                         str_details2 = " unsupported_extension";
 820                                         break;
 821                                 case 111:
 822                                         str_details2 = " certificate_unobtainable";
 823                                         break;
 824                                 case 112:
 825                                         str_details2 = " unrecognized_name";
 826                                         break;
 827                                 case 113:
 828                                         str_details2 = " bad_certificate_status_response";
 829                                         break;
 830                                 case 114:
 831                                         str_details2 = " bad_certificate_hash_value";
 832                                         break;
 833                                 case 115:
 834                                         str_details2 = " unknown_psk_identity";
 835                                         break;
 836                                         }
 837                                 }
 838                         }
 839
 840                 if (content_type == 22) /* Handshake */
 841                         {
 842                         str_details1 = "???";
 843
 844                         if (len > 0)
 845                                 {
 846                                 switch (((const unsigned char*)buf)[0])
 847                                         {
 848                                 case 0:
 849                                         str_details1 = ", HelloRequest";
 850                                         break;
 851                                 case 1:
 852                                         str_details1 = ", ClientHello";
 853                                         break;
 854                                 case 2:
 855                                         str_details1 = ", ServerHello";
 856                                         break;
 857                                 case 3:
 858                                         str_details1 = ", HelloVerifyRequest";
 859                                         break;
 860                                 case 11:
 861                                         str_details1 = ", Certificate";
 862                                         break;
 863                                 case 12:
 864                                         str_details1 = ", ServerKeyExchange";
 865                                         break;
 866                                 case 13:
 867                                         str_details1 = ", CertificateRequest";
 868                                         break;
 869                                 case 14:
 870                                         str_details1 = ", ServerHelloDone";
 871                                         break;
 872                                 case 15:
 873                                         str_details1 = ", CertificateVerify";
 874                                         break;
 875                                 case 16:
 876                                         str_details1 = ", ClientKeyExchange";
 877                                         break;
 878                                 case 20:
 879                                         str_details1 = ", Finished";
 880                                         break;
 881                                         }
 882                                 }
 883                         }
 884
 885 #ifndef OPENSSL_NO_HEARTBEATS
 886                 if (content_type == 24) /* Heartbeat */
 887                         {
 888                         str_details1 = ", Heartbeat";
 889
 890                         if (len > 0)
 891                                 {
 892                                 switch (((const unsigned char*)buf)[0])
 893                                         {
 894                                 case 1:
 895                                         str_details1 = ", HeartbeatRequest";
 896                                         break;
 897                                 case 2:
 898                                         str_details1 = ", HeartbeatResponse";
 899                                         break;
 900                                         }
 901                                 }
 902                         }
 903 #endif
 904                 }
 905
 906         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);
 907
 908         if (len > 0)
 909                 {
 910                 size_t num, i;
 911
 912                 BIO_printf(bio, "   ");
 913                 num = len;
 914 #if 0
 915                 if (num > 16)
 916                         num = 16;
 917 #endif
 918                 for (i = 0; i < num; i++)
 919                         {
 920                         if (i % 16 == 0 && i > 0)
 921                                 BIO_printf(bio, "\n   ");
 922                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 923                         }
 924                 if (i < len)
 925                         BIO_printf(bio, " ...");
 926                 BIO_printf(bio, "\n");
 927                 }
 928         (void)BIO_flush(bio);
 929         }
 930
 931 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 932                                         unsigned char *data, int len,
 933                                         void *arg)
 934         {
 935         BIO *bio = arg;
 936         char *extname;
 937
 938         switch(type)
 939                 {
 940                 case TLSEXT_TYPE_server_name:
 941                 extname = "server name";
 942                 break;
 943
 944                 case TLSEXT_TYPE_max_fragment_length:
 945                 extname = "max fragment length";
 946                 break;
 947
 948                 case TLSEXT_TYPE_client_certificate_url:
 949                 extname = "client certificate URL";
 950                 break;
 951
 952                 case TLSEXT_TYPE_trusted_ca_keys:
 953                 extname = "trusted CA keys";
 954                 break;
 955
 956                 case TLSEXT_TYPE_truncated_hmac:
 957                 extname = "truncated HMAC";
 958                 break;
 959
 960                 case TLSEXT_TYPE_status_request:
 961                 extname = "status request";
 962                 break;
 963
 964                 case TLSEXT_TYPE_user_mapping:
 965                 extname = "user mapping";
 966                 break;
 967
 968                 case TLSEXT_TYPE_client_authz:
 969                 extname = "client authz";
 970                 break;
 971
 972                 case TLSEXT_TYPE_server_authz:
 973                 extname = "server authz";
 974                 break;
 975
 976                 case TLSEXT_TYPE_cert_type:
 977                 extname = "cert type";
 978                 break;
 979
 980                 case TLSEXT_TYPE_elliptic_curves:
 981                 extname = "elliptic curves";
 982                 break;
 983
 984                 case TLSEXT_TYPE_ec_point_formats:
 985                 extname = "EC point formats";
 986                 break;
 987
 988                 case TLSEXT_TYPE_srp:
 989                 extname = "SRP";
 990                 break;
 991
 992                 case TLSEXT_TYPE_signature_algorithms:
 993                 extname = "signature algorithms";
 994                 break;
 995
 996                 case TLSEXT_TYPE_use_srtp:
 997                 extname = "use SRTP";
 998                 break;
 999
1000                 case TLSEXT_TYPE_heartbeat:
1001                 extname = "heartbeat";
1002                 break;
1003
1004                 case TLSEXT_TYPE_session_ticket:
1005                 extname = "session ticket";
1006                 break;
1007
1008                 case TLSEXT_TYPE_renegotiate:
1009                 extname = "renegotiation info";
1010                 break;
1011
1012 #ifdef TLSEXT_TYPE_opaque_prf_input
1013                 case TLSEXT_TYPE_opaque_prf_input:
1014                 extname = "opaque PRF input";
1015                 break;
1016 #endif
1017 #ifdef TLSEXT_TYPE_next_proto_neg
1018                 case TLSEXT_TYPE_next_proto_neg:
1019                 extname = "next protocol";
1020                 break;
1021 #endif
1022
1023                 default:
1024                 extname = "unknown";
1025                 break;
1026
1027                 }
1028
1029         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1030                         client_server ? "server": "client",
1031                         extname, type, len);
1032         BIO_dump(bio, (char *)data, len);
1033         (void)BIO_flush(bio);
1034         }
1035
1036 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1037         {
1038         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1039         unsigned int length, resultlength;
1040         union {
1041                 struct sockaddr sa;
1042                 struct sockaddr_in s4;
1043 #if OPENSSL_USE_IPV6
1044                 struct sockaddr_in6 s6;
1045 #endif
1046         } peer;
1047
1048         /* Initialize a random secret */
1049         if (!cookie_initialized)
1050                 {
1051                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1052                         {
1053                         BIO_printf(bio_err,"error setting random cookie secret\n");
1054                         return 0;
1055                         }
1056                 cookie_initialized = 1;
1057                 }
1058
1059         /* Read peer information */
1060         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1061
1062         /* Create buffer with peer's address and port */
1063         length = 0;
1064         switch (peer.sa.sa_family)
1065                 {
1066         case AF_INET:
1067                 length += sizeof(struct in_addr);
1068                 length += sizeof(peer.s4.sin_port);
1069                 break;
1070 #if OPENSSL_USE_IPV6
1071         case AF_INET6:
1072                 length += sizeof(struct in6_addr);
1073                 length += sizeof(peer.s6.sin6_port);
1074                 break;
1075 #endif
1076         default:
1077                 OPENSSL_assert(0);
1078                 break;
1079                 }
1080         buffer = OPENSSL_malloc(length);
1081
1082         if (buffer == NULL)
1083                 {
1084                 BIO_printf(bio_err,"out of memory\n");
1085                 return 0;
1086                 }
1087
1088         switch (peer.sa.sa_family)
1089                 {
1090         case AF_INET:
1091                 memcpy(buffer,
1092                        &peer.s4.sin_port,
1093                        sizeof(peer.s4.sin_port));
1094                 memcpy(buffer + sizeof(peer.s4.sin_port),
1095                        &peer.s4.sin_addr,
1096                        sizeof(struct in_addr));
1097                 break;
1098 #if OPENSSL_USE_IPV6
1099         case AF_INET6:
1100                 memcpy(buffer,
1101                        &peer.s6.sin6_port,
1102                        sizeof(peer.s6.sin6_port));
1103                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1104                        &peer.s6.sin6_addr,
1105                        sizeof(struct in6_addr));
1106                 break;
1107 #endif
1108         default:
1109                 OPENSSL_assert(0);
1110                 break;
1111                 }
1112
1113         /* Calculate HMAC of buffer using the secret */
1114         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1115              buffer, length, result, &resultlength);
1116         OPENSSL_free(buffer);
1117
1118         memcpy(cookie, result, resultlength);
1119         *cookie_len = resultlength;
1120
1121         return 1;
1122         }
1123
1124 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1125         {
1126         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1127         unsigned int length, resultlength;
1128         union {
1129                 struct sockaddr sa;
1130                 struct sockaddr_in s4;
1131 #if OPENSSL_USE_IPV6
1132                 struct sockaddr_in6 s6;
1133 #endif
1134         } peer;
1135
1136         /* If secret isn't initialized yet, the cookie can't be valid */
1137         if (!cookie_initialized)
1138                 return 0;
1139
1140         /* Read peer information */
1141         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1142
1143         /* Create buffer with peer's address and port */
1144         length = 0;
1145         switch (peer.sa.sa_family)
1146                 {
1147         case AF_INET:
1148                 length += sizeof(struct in_addr);
1149                 length += sizeof(peer.s4.sin_port);
1150                 break;
1151 #if OPENSSL_USE_IPV6
1152         case AF_INET6:
1153                 length += sizeof(struct in6_addr);
1154                 length += sizeof(peer.s6.sin6_port);
1155                 break;
1156 #endif
1157         default:
1158                 OPENSSL_assert(0);
1159                 break;
1160                 }
1161         buffer = OPENSSL_malloc(length);
1162
1163         if (buffer == NULL)
1164                 {
1165                 BIO_printf(bio_err,"out of memory\n");
1166                 return 0;
1167                 }
1168
1169         switch (peer.sa.sa_family)
1170                 {
1171         case AF_INET:
1172                 memcpy(buffer,
1173                        &peer.s4.sin_port,
1174                        sizeof(peer.s4.sin_port));
1175                 memcpy(buffer + sizeof(peer.s4.sin_port),
1176                        &peer.s4.sin_addr,
1177                        sizeof(struct in_addr));
1178                 break;
1179 #if OPENSSL_USE_IPV6
1180         case AF_INET6:
1181                 memcpy(buffer,
1182                        &peer.s6.sin6_port,
1183                        sizeof(peer.s6.sin6_port));
1184                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1185                        &peer.s6.sin6_addr,
1186                        sizeof(struct in6_addr));
1187                 break;
1188 #endif
1189         default:
1190                 OPENSSL_assert(0);
1191                 break;
1192                 }
1193
1194         /* Calculate HMAC of buffer using the secret */
1195         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1196              buffer, length, result, &resultlength);
1197         OPENSSL_free(buffer);
1198
1199         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1200                 return 1;
1201
1202         return 0;
1203         }
1204
1205 /* Example of extended certificate handling. Where the standard support
1206  * of one certificate per algorithm is not sufficient an application
1207  * can decide which certificate(s) to use at runtime based on whatever
1208  * criteria it deems appropriate.
1209  */
1210
1211 /* Linked list of certificates, keys and chains */
1212 struct  ssl_excert_st
1213         {
1214         int certform;
1215         const char *certfile;
1216         int keyform;
1217         const char *keyfile;
1218         const char *chainfile;
1219         X509 *cert;
1220         EVP_PKEY *key;
1221         STACK_OF(X509) *chain;
1222         int build_chain;
1223         struct ssl_excert_st *next, *prev;
1224         };
1225
1226 struct chain_flags
1227         {
1228         int flag;
1229         const char *name;
1230         };
1231
1232 struct chain_flags chain_flags_list[] =
1233         {
1234                 {CERT_PKEY_VALID, "Overall Validity"},
1235                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1236                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1237                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1238                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1239                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1240                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1241                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1242                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1243                 {0, NULL}
1244         };
1245
1246
1247 static void print_chain_flags(BIO *out, int flags)
1248         {
1249         struct chain_flags *ctmp = chain_flags_list;
1250         while(ctmp->name)
1251                 {
1252                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1253                                 flags & ctmp->flag ? "OK" : "NOT OK");
1254                 ctmp++;
1255                 }
1256         }
1257
1258 /* Very basic selection callback: just use any certificate chain
1259  * reported as valid. More sophisticated could prioritise according
1260  * to local policy.
1261  */
1262 static int set_cert_cb(SSL *ssl, void *arg)
1263         {
1264         int i, rv;
1265         SSL_EXCERT *exc = arg;
1266         SSL_certs_clear(ssl);
1267
1268         if (!exc)
1269                 return 1;
1270
1271         /* Go to end of list and traverse backwards since we prepend
1272          * newer entries this retains the original order.
1273          */
1274         while (exc->next)
1275                 exc = exc->next;
1276
1277         i = 0;
1278
1279         while(exc)
1280                 {
1281                 i++;
1282                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1283                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1284                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1285                                                         XN_FLAG_ONELINE);
1286                 BIO_puts(bio_err, "\n");
1287
1288                 print_chain_flags(bio_err, rv);
1289                 if (rv & CERT_PKEY_VALID)
1290                         {
1291                         SSL_use_certificate(ssl, exc->cert);
1292                         SSL_use_PrivateKey(ssl, exc->key);
1293                         /* NB: we wouldn't normally do this as it is
1294                          * not efficient building chains on each connection
1295                          * better to cache the chain in advance.
1296                          */
1297                         if (exc->build_chain)
1298                                 {
1299                                 if (!SSL_build_cert_chain(ssl, 0))
1300                                         return 0;
1301                                 }
1302                         else if (exc->chain)
1303                                 SSL_set1_chain(ssl, exc->chain);
1304                         }
1305                 exc = exc->prev;
1306                 }
1307         return 1;
1308         }
1309
1310 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1311         {
1312         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1313         }
1314
1315 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1316         {
1317         SSL_EXCERT *exc;
1318         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1319         if (!exc)
1320                 return 0;
1321         exc->certfile = NULL;
1322         exc->keyfile = NULL;
1323         exc->chainfile = NULL;
1324         exc->cert = NULL;
1325         exc->key = NULL;
1326         exc->chain = NULL;
1327         exc->prev = NULL;
1328         exc->build_chain = 0;
1329
1330         exc->next = *pexc;
1331         *pexc = exc;
1332
1333         if (exc->next)
1334                 {
1335                 exc->certform = exc->next->certform;
1336                 exc->keyform = exc->next->keyform;
1337                 exc->next->prev = exc;
1338                 }
1339         else
1340                 {
1341                 exc->certform = FORMAT_PEM;
1342                 exc->keyform = FORMAT_PEM;
1343                 }
1344         return 1;
1345
1346         }
1347
1348 void ssl_excert_free(SSL_EXCERT *exc)
1349         {
1350         SSL_EXCERT *curr;
1351         while (exc)
1352                 {
1353                 if (exc->cert)
1354                         X509_free(exc->cert);
1355                 if (exc->key)
1356                         EVP_PKEY_free(exc->key);
1357                 if (exc->chain)
1358                         sk_X509_pop_free(exc->chain, X509_free);
1359                 curr = exc;
1360                 exc = exc->next;
1361                 OPENSSL_free(curr);
1362                 }
1363         }
1364
1365 int load_excert(SSL_EXCERT **pexc, BIO *err)
1366         {
1367         SSL_EXCERT *exc = *pexc;
1368         if (!exc)
1369                 return 1;
1370         /* If nothing in list, free and set to NULL */
1371         if (!exc->certfile && !exc->next)
1372                 {
1373                 ssl_excert_free(exc);
1374                 *pexc = NULL;
1375                 return 1;
1376                 }
1377         for(; exc; exc=exc->next)
1378                 {
1379                 if (!exc->certfile)
1380                         {
1381                         BIO_printf(err, "Missing filename\n");
1382                         return 0;
1383                         }
1384                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1385                                         NULL, NULL, "Server Certificate");
1386                 if (!exc->cert)
1387                         return 0;
1388                 if (exc->keyfile)
1389                         exc->keyfile = exc->certfile;
1390                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1391                                         NULL, NULL, "Server Certificate");
1392                 if (!exc->key)
1393                         return 0;
1394                 if (exc->chainfile)
1395                         {
1396                         exc->chain = load_certs(err,
1397                                                 exc->chainfile, FORMAT_PEM,
1398                                                 NULL, NULL,
1399                                                 "Server Chain");
1400                         if (!exc->chainfile)
1401                                 return 0;
1402                         }
1403                 }
1404         return 1;
1405         }
1406
1407
1408 int args_excert(char ***pargs, int *pargc,
1409                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1410         {
1411         char *arg = **pargs, *argn = (*pargs)[1];
1412         SSL_EXCERT *exc = *pexc;
1413         int narg = 2;
1414         if (!exc)
1415                 {
1416                 if (ssl_excert_prepend(&exc))
1417                         *pexc = exc;
1418                 else
1419                         {
1420                         BIO_printf(err, "Error initialising xcert\n");
1421                         *badarg = 1;
1422                         goto err;
1423                         }
1424                 }
1425         if (strcmp(arg, "-xcert") == 0)
1426                 {
1427                 if (!argn)
1428                         {
1429                         *badarg = 1;
1430                         return 1;
1431                         }
1432                 if (exc->certfile && !ssl_excert_prepend(&exc))
1433                         {
1434                         BIO_printf(err, "Error adding xcert\n");
1435                         *badarg = 1;
1436                         goto err;
1437                         }
1438                 exc->certfile = argn;
1439                 }
1440         else if (strcmp(arg,"-xkey") == 0)
1441                 {
1442                 if (!argn)
1443                         {
1444                         *badarg = 1;
1445                         return 1;
1446                         }
1447                 if (exc->keyfile)
1448                         {
1449                         BIO_printf(err, "Key already specified\n");
1450                         *badarg = 1;
1451                         return 1;
1452                         }
1453                 exc->keyfile = argn;
1454                 }
1455         else if (strcmp(arg,"-xchain") == 0)
1456                 {
1457                 if (!argn)
1458                         {
1459                         *badarg = 1;
1460                         return 1;
1461                         }
1462                 if (exc->chainfile)
1463                         {
1464                         BIO_printf(err, "Chain already specified\n");
1465                         *badarg = 1;
1466                         return 1;
1467                         }
1468                 exc->chainfile = argn;
1469                 }
1470         else if (strcmp(arg,"-xchain_build") == 0)
1471                 {
1472                 narg = 1;
1473                 exc->build_chain = 1;
1474                 }
1475         else if (strcmp(arg,"-xcertform") == 0)
1476                 {
1477                 if (!argn)
1478                         {
1479                         *badarg = 1;
1480                         goto err;
1481                         }
1482                 exc->certform = str2fmt(argn);
1483                 }
1484         else if (strcmp(arg,"-xkeyform") == 0)
1485                 {
1486                 if (!argn)
1487                         {
1488                         *badarg = 1;
1489                         goto err;
1490                         }
1491                 exc->keyform = str2fmt(argn);
1492                 }
1493         else
1494                 return 0;
1495
1496         (*pargs) += narg;
1497
1498         if (pargc)
1499                 *pargc -= narg;
1500
1501         *pexc = exc;
1502
1503         return 1;
1504
1505         err:
1506         ERR_print_errors(err);
1507         ssl_excert_free(exc);
1508         *pexc = NULL;
1509         return 1;
1510         }
1511
1512 static void print_raw_cipherlist(BIO *bio, SSL *s)
1513         {
1514         const unsigned char *rlist;
1515         static const unsigned char scsv_id[] = {0, 0, 0xFF};
1516         size_t i, rlistlen, num;
1517         if (!SSL_is_server(s))
1518                 return;
1519         num = SSL_get0_raw_cipherlist(s, NULL);
1520         rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1521         BIO_puts(bio, "Client cipher list: ");
1522         for (i = 0; i < rlistlen; i += num, rlist += num)
1523                 {
1524                 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1525                 if (i)
1526                         BIO_puts(bio, ":");
1527                 if (c)
1528                         BIO_puts(bio, SSL_CIPHER_get_name(c));
1529                 else if (!memcmp(rlist, scsv_id - num + 3, num))
1530                         BIO_puts(bio, "SCSV");
1531                 else
1532                         {
1533                         size_t j;
1534                         BIO_puts(bio, "0x");
1535                         for (j = 0; j < num; j++)
1536                                 BIO_printf(bio, "%02X", rlist[j]);
1537                         }
1538                 }
1539         BIO_puts(bio, "\n");
1540         }
1541
1542
1543 void print_ssl_summary(BIO *bio, SSL *s)
1544         {
1545         const SSL_CIPHER *c;
1546         X509 *peer;
1547         /*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
1548         BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
1549         print_raw_cipherlist(bio, s);
1550         c = SSL_get_current_cipher(s);
1551         BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1552         do_print_sigalgs(bio, s, 0);
1553         peer = SSL_get_peer_certificate(s);
1554         if (peer)
1555                 {
1556                 int nid;
1557                 BIO_puts(bio, "Peer certificate: ");
1558                 X509_NAME_print_ex(bio, X509_get_subject_name(peer),
1559                                         0, XN_FLAG_ONELINE);
1560                 BIO_puts(bio, "\n");
1561                 if (SSL_get_peer_signature_nid(s, &nid))
1562                         BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
1563                 }
1564         else
1565                 BIO_puts(bio, "No peer certificate\n");
1566         if (peer)
1567                 X509_free(peer);
1568         ssl_print_point_formats(bio, s);
1569         if (SSL_is_server(s))
1570                 ssl_print_curves(bio, s, 1);
1571         else
1572                 ssl_print_tmp_key(bio, s);
1573         }
1574
1575 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1576                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1577         {
1578         char *arg = **pargs, *argn = (*pargs)[1];
1579         int rv;
1580
1581         /* Attempt to run SSL configuration command */
1582         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1583         /* If parameter not recognised just return */
1584         if (rv == 0)
1585                 return 0;
1586         /* see if missing argument error */
1587         if (rv == -3)
1588                 {
1589                 BIO_printf(err, "%s needs an argument\n", arg);
1590                 *badarg = 1;
1591                 goto end;
1592                 }
1593         /* Check for some other error */
1594         if (rv < 0)
1595                 {
1596                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1597                                                 arg, argn ? argn : "");
1598                 *badarg = 1;
1599                 goto end;
1600                 }
1601         /* Store command and argument */
1602         /* If only one argument processed store value as NULL */
1603         if (rv == 1)
1604                 argn = NULL;
1605         if (!*pstr)
1606                 *pstr = sk_OPENSSL_STRING_new_null();
1607         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1608                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1609                 {
1610                 BIO_puts(err, "Memory allocation failure\n");
1611                 goto end;
1612                 }
1613
1614         end:
1615         if (*badarg)
1616                 ERR_print_errors(err);
1617
1618         return 1;
1619         }
1620
1621 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1622                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1623         {
1624         int i;
1625         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1626         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1627                 {
1628                 const char *param = sk_OPENSSL_STRING_value(str, i);
1629                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1630                 /* If no_ecdhe or named curve already specified don't need
1631                  * a default.
1632                  */
1633                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1634                         no_ecdhe = 1;
1635 #ifndef OPENSSL_NO_JPAKE
1636                 if (!no_jpake && !strcmp(param, "-cipher"))
1637                         {
1638                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1639                         return 0;
1640                         }
1641 #endif
1642                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1643                         {
1644                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1645                                                 param, value ? value : "");
1646                         ERR_print_errors(err);
1647                         return 0;
1648                         }
1649                 }
1650         /* This is a special case to keep existing s_server functionality:
1651          * if we don't have any curve specified *and* we haven't disabled
1652          * ECDHE then use P-256.
1653          */
1654         if (!no_ecdhe)
1655                 {
1656                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1657                         {
1658                         BIO_puts(err, "Error setting EC curve\n");
1659                         ERR_print_errors(err);
1660                         return 0;
1661                         }
1662                 }
1663 #ifndef OPENSSL_NO_JPAKE
1664         if (!no_jpake)
1665                 {
1666                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1667                         {
1668                         BIO_puts(err, "Error setting cipher to PSK\n");
1669                         ERR_print_errors(err);
1670                         return 0;
1671                         }
1672                 }
1673 #endif
1674         return 1;
1675         }
1676
1677 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1678         {
1679         X509_CRL *crl;
1680         int i;
1681         for (i = 0; i < sk_X509_CRL_num(crls); i++)
1682                 {
1683                 crl = sk_X509_CRL_value(crls, i);
1684                 X509_STORE_add_crl(st, crl);
1685                 }
1686         return 1;
1687         }
1688
1689 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1690         {
1691         X509_STORE *st;
1692         st = SSL_CTX_get_cert_store(ctx);
1693         add_crls_store(st, crls);
1694         if (crl_download)
1695                 store_setup_crl_download(st);
1696         return 1;
1697         }
1698
1699 int ssl_load_stores(SSL_CTX *ctx,
1700                         const char *vfyCApath, const char *vfyCAfile,
1701                         const char *chCApath, const char *chCAfile,
1702                         STACK_OF(X509_CRL) *crls, int crl_download)
1703         {
1704         X509_STORE *vfy = NULL, *ch = NULL;
1705         int rv = 0;
1706         if (vfyCApath || vfyCAfile)
1707                 {
1708                 vfy = X509_STORE_new();
1709                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1710                         goto err;
1711                 add_crls_store(vfy, crls);
1712                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1713                 if (crl_download)
1714                         store_setup_crl_download(vfy);
1715                 }
1716         if (chCApath || chCAfile)
1717                 {
1718                 ch = X509_STORE_new();
1719                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1720                         goto err;
1721                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1722                 }
1723         rv = 1;
1724         err:
1725         if (vfy)
1726                 X509_STORE_free(vfy);
1727         if (ch)
1728                 X509_STORE_free(ch);
1729         return rv;
1730         }