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 #ifndef OPENSSL_NO_EC
 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 #endif
 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 #ifndef OPENSSL_NO_ECDH
 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 #endif
 549                 }
 550         EVP_PKEY_free(key);
 551         return 1;
 552         }
 553
 554
 555 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 556                                    int argi, long argl, long ret)
 557         {
 558         BIO *out;
 559
 560         out=(BIO *)BIO_get_callback_arg(bio);
 561         if (out == NULL) return(ret);
 562
 563         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 564                 {
 565                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 566                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 567                 BIO_dump(out,argp,(int)ret);
 568                 return(ret);
 569                 }
 570         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 571                 {
 572                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 573                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 574                 BIO_dump(out,argp,(int)ret);
 575                 }
 576         return(ret);
 577         }
 578
 579 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 580         {
 581         const char *str;
 582         int w;
 583
 584         w=where& ~SSL_ST_MASK;
 585
 586         if (w & SSL_ST_CONNECT) str="SSL_connect";
 587         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 588         else str="undefined";
 589
 590         if (where & SSL_CB_LOOP)
 591                 {
 592                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 593                 }
 594         else if (where & SSL_CB_ALERT)
 595                 {
 596                 str=(where & SSL_CB_READ)?"read":"write";
 597                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 598                         str,
 599                         SSL_alert_type_string_long(ret),
 600                         SSL_alert_desc_string_long(ret));
 601                 }
 602         else if (where & SSL_CB_EXIT)
 603                 {
 604                 if (ret == 0)
 605                         BIO_printf(bio_err,"%s:failed in %s\n",
 606                                 str,SSL_state_string_long(s));
 607                 else if (ret < 0)
 608                         {
 609                         BIO_printf(bio_err,"%s:error in %s\n",
 610                                 str,SSL_state_string_long(s));
 611                         }
 612                 }
 613         }
 614
 615
 616 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 617         {
 618         BIO *bio = arg;
 619         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 620
 621         str_write_p = write_p ? ">>>" : "<<<";
 622
 623         switch (version)
 624                 {
 625         case SSL2_VERSION:
 626                 str_version = "SSL 2.0";
 627                 break;
 628         case SSL3_VERSION:
 629                 str_version = "SSL 3.0 ";
 630                 break;
 631         case TLS1_VERSION:
 632                 str_version = "TLS 1.0 ";
 633                 break;
 634         case TLS1_1_VERSION:
 635                 str_version = "TLS 1.1 ";
 636                 break;
 637         case TLS1_2_VERSION:
 638                 str_version = "TLS 1.2 ";
 639                 break;
 640         case DTLS1_VERSION:
 641                 str_version = "DTLS 1.0 ";
 642                 break;
 643         case DTLS1_BAD_VER:
 644                 str_version = "DTLS 1.0 (bad) ";
 645                 break;
 646         default:
 647                 str_version = "???";
 648                 }
 649
 650         if (version == SSL2_VERSION)
 651                 {
 652                 str_details1 = "???";
 653
 654                 if (len > 0)
 655                         {
 656                         switch (((const unsigned char*)buf)[0])
 657                                 {
 658                                 case 0:
 659                                         str_details1 = ", ERROR:";
 660                                         str_details2 = " ???";
 661                                         if (len >= 3)
 662                                                 {
 663                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 664
 665                                                 switch (err)
 666                                                         {
 667                                                 case 0x0001:
 668                                                         str_details2 = " NO-CIPHER-ERROR";
 669                                                         break;
 670                                                 case 0x0002:
 671                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 672                                                         break;
 673                                                 case 0x0004:
 674                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 675                                                         break;
 676                                                 case 0x0006:
 677                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 678                                                         break;
 679                                                         }
 680                                                 }
 681
 682                                         break;
 683                                 case 1:
 684                                         str_details1 = ", CLIENT-HELLO";
 685                                         break;
 686                                 case 2:
 687                                         str_details1 = ", CLIENT-MASTER-KEY";
 688                                         break;
 689                                 case 3:
 690                                         str_details1 = ", CLIENT-FINISHED";
 691                                         break;
 692                                 case 4:
 693                                         str_details1 = ", SERVER-HELLO";
 694                                         break;
 695                                 case 5:
 696                                         str_details1 = ", SERVER-VERIFY";
 697                                         break;
 698                                 case 6:
 699                                         str_details1 = ", SERVER-FINISHED";
 700                                         break;
 701                                 case 7:
 702                                         str_details1 = ", REQUEST-CERTIFICATE";
 703                                         break;
 704                                 case 8:
 705                                         str_details1 = ", CLIENT-CERTIFICATE";
 706                                         break;
 707                                 }
 708                         }
 709                 }
 710
 711         if (version == SSL3_VERSION ||
 712             version == TLS1_VERSION ||
 713             version == TLS1_1_VERSION ||
 714             version == TLS1_2_VERSION ||
 715             version == DTLS1_VERSION ||
 716             version == DTLS1_BAD_VER)
 717                 {
 718                 switch (content_type)
 719                         {
 720                 case 20:
 721                         str_content_type = "ChangeCipherSpec";
 722                         break;
 723                 case 21:
 724                         str_content_type = "Alert";
 725                         break;
 726                 case 22:
 727                         str_content_type = "Handshake";
 728                         break;
 729                         }
 730
 731                 if (content_type == 21) /* Alert */
 732                         {
 733                         str_details1 = ", ???";
 734
 735                         if (len == 2)
 736                                 {
 737                                 switch (((const unsigned char*)buf)[0])
 738                                         {
 739                                 case 1:
 740                                         str_details1 = ", warning";
 741                                         break;
 742                                 case 2:
 743                                         str_details1 = ", fatal";
 744                                         break;
 745                                         }
 746
 747                                 str_details2 = " ???";
 748                                 switch (((const unsigned char*)buf)[1])
 749                                         {
 750                                 case 0:
 751                                         str_details2 = " close_notify";
 752                                         break;
 753                                 case 10:
 754                                         str_details2 = " unexpected_message";
 755                                         break;
 756                                 case 20:
 757                                         str_details2 = " bad_record_mac";
 758                                         break;
 759                                 case 21:
 760                                         str_details2 = " decryption_failed";
 761                                         break;
 762                                 case 22:
 763                                         str_details2 = " record_overflow";
 764                                         break;
 765                                 case 30:
 766                                         str_details2 = " decompression_failure";
 767                                         break;
 768                                 case 40:
 769                                         str_details2 = " handshake_failure";
 770                                         break;
 771                                 case 42:
 772                                         str_details2 = " bad_certificate";
 773                                         break;
 774                                 case 43:
 775                                         str_details2 = " unsupported_certificate";
 776                                         break;
 777                                 case 44:
 778                                         str_details2 = " certificate_revoked";
 779                                         break;
 780                                 case 45:
 781                                         str_details2 = " certificate_expired";
 782                                         break;
 783                                 case 46:
 784                                         str_details2 = " certificate_unknown";
 785                                         break;
 786                                 case 47:
 787                                         str_details2 = " illegal_parameter";
 788                                         break;
 789                                 case 48:
 790                                         str_details2 = " unknown_ca";
 791                                         break;
 792                                 case 49:
 793                                         str_details2 = " access_denied";
 794                                         break;
 795                                 case 50:
 796                                         str_details2 = " decode_error";
 797                                         break;
 798                                 case 51:
 799                                         str_details2 = " decrypt_error";
 800                                         break;
 801                                 case 60:
 802                                         str_details2 = " export_restriction";
 803                                         break;
 804                                 case 70:
 805                                         str_details2 = " protocol_version";
 806                                         break;
 807                                 case 71:
 808                                         str_details2 = " insufficient_security";
 809                                         break;
 810                                 case 80:
 811                                         str_details2 = " internal_error";
 812                                         break;
 813                                 case 90:
 814                                         str_details2 = " user_canceled";
 815                                         break;
 816                                 case 100:
 817                                         str_details2 = " no_renegotiation";
 818                                         break;
 819                                 case 110:
 820                                         str_details2 = " unsupported_extension";
 821                                         break;
 822                                 case 111:
 823                                         str_details2 = " certificate_unobtainable";
 824                                         break;
 825                                 case 112:
 826                                         str_details2 = " unrecognized_name";
 827                                         break;
 828                                 case 113:
 829                                         str_details2 = " bad_certificate_status_response";
 830                                         break;
 831                                 case 114:
 832                                         str_details2 = " bad_certificate_hash_value";
 833                                         break;
 834                                 case 115:
 835                                         str_details2 = " unknown_psk_identity";
 836                                         break;
 837                                         }
 838                                 }
 839                         }
 840
 841                 if (content_type == 22) /* Handshake */
 842                         {
 843                         str_details1 = "???";
 844
 845                         if (len > 0)
 846                                 {
 847                                 switch (((const unsigned char*)buf)[0])
 848                                         {
 849                                 case 0:
 850                                         str_details1 = ", HelloRequest";
 851                                         break;
 852                                 case 1:
 853                                         str_details1 = ", ClientHello";
 854                                         break;
 855                                 case 2:
 856                                         str_details1 = ", ServerHello";
 857                                         break;
 858                                 case 3:
 859                                         str_details1 = ", HelloVerifyRequest";
 860                                         break;
 861                                 case 11:
 862                                         str_details1 = ", Certificate";
 863                                         break;
 864                                 case 12:
 865                                         str_details1 = ", ServerKeyExchange";
 866                                         break;
 867                                 case 13:
 868                                         str_details1 = ", CertificateRequest";
 869                                         break;
 870                                 case 14:
 871                                         str_details1 = ", ServerHelloDone";
 872                                         break;
 873                                 case 15:
 874                                         str_details1 = ", CertificateVerify";
 875                                         break;
 876                                 case 16:
 877                                         str_details1 = ", ClientKeyExchange";
 878                                         break;
 879                                 case 20:
 880                                         str_details1 = ", Finished";
 881                                         break;
 882                                 case 23:
 883                                         str_details1 = ", SupplementalData";
 884                                         break;
 885                                         }
 886                                 }
 887                         }
 888
 889 #ifndef OPENSSL_NO_HEARTBEATS
 890                 if (content_type == 24) /* Heartbeat */
 891                         {
 892                         str_details1 = ", Heartbeat";
 893
 894                         if (len > 0)
 895                                 {
 896                                 switch (((const unsigned char*)buf)[0])
 897                                         {
 898                                 case 1:
 899                                         str_details1 = ", HeartbeatRequest";
 900                                         break;
 901                                 case 2:
 902                                         str_details1 = ", HeartbeatResponse";
 903                                         break;
 904                                         }
 905                                 }
 906                         }
 907 #endif
 908                 }
 909
 910         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);
 911
 912         if (len > 0)
 913                 {
 914                 size_t num, i;
 915
 916                 BIO_printf(bio, "   ");
 917                 num = len;
 918 #if 0
 919                 if (num > 16)
 920                         num = 16;
 921 #endif
 922                 for (i = 0; i < num; i++)
 923                         {
 924                         if (i % 16 == 0 && i > 0)
 925                                 BIO_printf(bio, "\n   ");
 926                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 927                         }
 928                 if (i < len)
 929                         BIO_printf(bio, " ...");
 930                 BIO_printf(bio, "\n");
 931                 }
 932         (void)BIO_flush(bio);
 933         }
 934
 935 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 936                                         unsigned char *data, int len,
 937                                         void *arg)
 938         {
 939         BIO *bio = arg;
 940         char *extname;
 941
 942         switch(type)
 943                 {
 944                 case TLSEXT_TYPE_server_name:
 945                 extname = "server name";
 946                 break;
 947
 948                 case TLSEXT_TYPE_max_fragment_length:
 949                 extname = "max fragment length";
 950                 break;
 951
 952                 case TLSEXT_TYPE_client_certificate_url:
 953                 extname = "client certificate URL";
 954                 break;
 955
 956                 case TLSEXT_TYPE_trusted_ca_keys:
 957                 extname = "trusted CA keys";
 958                 break;
 959
 960                 case TLSEXT_TYPE_truncated_hmac:
 961                 extname = "truncated HMAC";
 962                 break;
 963
 964                 case TLSEXT_TYPE_status_request:
 965                 extname = "status request";
 966                 break;
 967
 968                 case TLSEXT_TYPE_user_mapping:
 969                 extname = "user mapping";
 970                 break;
 971
 972                 case TLSEXT_TYPE_client_authz:
 973                 extname = "client authz";
 974                 break;
 975
 976                 case TLSEXT_TYPE_server_authz:
 977                 extname = "server authz";
 978                 break;
 979
 980                 case TLSEXT_TYPE_cert_type:
 981                 extname = "cert type";
 982                 break;
 983
 984                 case TLSEXT_TYPE_elliptic_curves:
 985                 extname = "elliptic curves";
 986                 break;
 987
 988                 case TLSEXT_TYPE_ec_point_formats:
 989                 extname = "EC point formats";
 990                 break;
 991
 992                 case TLSEXT_TYPE_srp:
 993                 extname = "SRP";
 994                 break;
 995
 996                 case TLSEXT_TYPE_signature_algorithms:
 997                 extname = "signature algorithms";
 998                 break;
 999
1000                 case TLSEXT_TYPE_use_srtp:
1001                 extname = "use SRTP";
1002                 break;
1003
1004                 case TLSEXT_TYPE_heartbeat:
1005                 extname = "heartbeat";
1006                 break;
1007
1008                 case TLSEXT_TYPE_session_ticket:
1009                 extname = "session ticket";
1010                 break;
1011
1012                 case TLSEXT_TYPE_renegotiate:
1013                 extname = "renegotiation info";
1014                 break;
1015
1016 #ifdef TLSEXT_TYPE_opaque_prf_input
1017                 case TLSEXT_TYPE_opaque_prf_input:
1018                 extname = "opaque PRF input";
1019                 break;
1020 #endif
1021 #ifdef TLSEXT_TYPE_next_proto_neg
1022                 case TLSEXT_TYPE_next_proto_neg:
1023                 extname = "next protocol";
1024                 break;
1025 #endif
1026
1027                 default:
1028                 extname = "unknown";
1029                 break;
1030
1031                 }
1032
1033         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1034                         client_server ? "server": "client",
1035                         extname, type, len);
1036         BIO_dump(bio, (char *)data, len);
1037         (void)BIO_flush(bio);
1038         }
1039
1040 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1041         {
1042         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1043         unsigned int length, resultlength;
1044         union {
1045                 struct sockaddr sa;
1046                 struct sockaddr_in s4;
1047 #if OPENSSL_USE_IPV6
1048                 struct sockaddr_in6 s6;
1049 #endif
1050         } peer;
1051
1052         /* Initialize a random secret */
1053         if (!cookie_initialized)
1054                 {
1055                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1056                         {
1057                         BIO_printf(bio_err,"error setting random cookie secret\n");
1058                         return 0;
1059                         }
1060                 cookie_initialized = 1;
1061                 }
1062
1063         /* Read peer information */
1064         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1065
1066         /* Create buffer with peer's address and port */
1067         length = 0;
1068         switch (peer.sa.sa_family)
1069                 {
1070         case AF_INET:
1071                 length += sizeof(struct in_addr);
1072                 length += sizeof(peer.s4.sin_port);
1073                 break;
1074 #if OPENSSL_USE_IPV6
1075         case AF_INET6:
1076                 length += sizeof(struct in6_addr);
1077                 length += sizeof(peer.s6.sin6_port);
1078                 break;
1079 #endif
1080         default:
1081                 OPENSSL_assert(0);
1082                 break;
1083                 }
1084         buffer = OPENSSL_malloc(length);
1085
1086         if (buffer == NULL)
1087                 {
1088                 BIO_printf(bio_err,"out of memory\n");
1089                 return 0;
1090                 }
1091
1092         switch (peer.sa.sa_family)
1093                 {
1094         case AF_INET:
1095                 memcpy(buffer,
1096                        &peer.s4.sin_port,
1097                        sizeof(peer.s4.sin_port));
1098                 memcpy(buffer + sizeof(peer.s4.sin_port),
1099                        &peer.s4.sin_addr,
1100                        sizeof(struct in_addr));
1101                 break;
1102 #if OPENSSL_USE_IPV6
1103         case AF_INET6:
1104                 memcpy(buffer,
1105                        &peer.s6.sin6_port,
1106                        sizeof(peer.s6.sin6_port));
1107                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1108                        &peer.s6.sin6_addr,
1109                        sizeof(struct in6_addr));
1110                 break;
1111 #endif
1112         default:
1113                 OPENSSL_assert(0);
1114                 break;
1115                 }
1116
1117         /* Calculate HMAC of buffer using the secret */
1118         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1119              buffer, length, result, &resultlength);
1120         OPENSSL_free(buffer);
1121
1122         memcpy(cookie, result, resultlength);
1123         *cookie_len = resultlength;
1124
1125         return 1;
1126         }
1127
1128 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1129         {
1130         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1131         unsigned int length, resultlength;
1132         union {
1133                 struct sockaddr sa;
1134                 struct sockaddr_in s4;
1135 #if OPENSSL_USE_IPV6
1136                 struct sockaddr_in6 s6;
1137 #endif
1138         } peer;
1139
1140         /* If secret isn't initialized yet, the cookie can't be valid */
1141         if (!cookie_initialized)
1142                 return 0;
1143
1144         /* Read peer information */
1145         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1146
1147         /* Create buffer with peer's address and port */
1148         length = 0;
1149         switch (peer.sa.sa_family)
1150                 {
1151         case AF_INET:
1152                 length += sizeof(struct in_addr);
1153                 length += sizeof(peer.s4.sin_port);
1154                 break;
1155 #if OPENSSL_USE_IPV6
1156         case AF_INET6:
1157                 length += sizeof(struct in6_addr);
1158                 length += sizeof(peer.s6.sin6_port);
1159                 break;
1160 #endif
1161         default:
1162                 OPENSSL_assert(0);
1163                 break;
1164                 }
1165         buffer = OPENSSL_malloc(length);
1166
1167         if (buffer == NULL)
1168                 {
1169                 BIO_printf(bio_err,"out of memory\n");
1170                 return 0;
1171                 }
1172
1173         switch (peer.sa.sa_family)
1174                 {
1175         case AF_INET:
1176                 memcpy(buffer,
1177                        &peer.s4.sin_port,
1178                        sizeof(peer.s4.sin_port));
1179                 memcpy(buffer + sizeof(peer.s4.sin_port),
1180                        &peer.s4.sin_addr,
1181                        sizeof(struct in_addr));
1182                 break;
1183 #if OPENSSL_USE_IPV6
1184         case AF_INET6:
1185                 memcpy(buffer,
1186                        &peer.s6.sin6_port,
1187                        sizeof(peer.s6.sin6_port));
1188                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1189                        &peer.s6.sin6_addr,
1190                        sizeof(struct in6_addr));
1191                 break;
1192 #endif
1193         default:
1194                 OPENSSL_assert(0);
1195                 break;
1196                 }
1197
1198         /* Calculate HMAC of buffer using the secret */
1199         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1200              buffer, length, result, &resultlength);
1201         OPENSSL_free(buffer);
1202
1203         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1204                 return 1;
1205
1206         return 0;
1207         }
1208
1209 /* Example of extended certificate handling. Where the standard support
1210  * of one certificate per algorithm is not sufficient an application
1211  * can decide which certificate(s) to use at runtime based on whatever
1212  * criteria it deems appropriate.
1213  */
1214
1215 /* Linked list of certificates, keys and chains */
1216 struct  ssl_excert_st
1217         {
1218         int certform;
1219         const char *certfile;
1220         int keyform;
1221         const char *keyfile;
1222         const char *chainfile;
1223         X509 *cert;
1224         EVP_PKEY *key;
1225         STACK_OF(X509) *chain;
1226         int build_chain;
1227         struct ssl_excert_st *next, *prev;
1228         };
1229
1230 struct chain_flags
1231         {
1232         int flag;
1233         const char *name;
1234         };
1235
1236 struct chain_flags chain_flags_list[] =
1237         {
1238                 {CERT_PKEY_VALID, "Overall Validity"},
1239                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1240                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1241                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1242                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1243                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1244                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1245                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1246                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1247                 {0, NULL}
1248         };
1249
1250
1251 static void print_chain_flags(BIO *out, int flags)
1252         {
1253         struct chain_flags *ctmp = chain_flags_list;
1254         while(ctmp->name)
1255                 {
1256                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1257                                 flags & ctmp->flag ? "OK" : "NOT OK");
1258                 ctmp++;
1259                 }
1260         }
1261
1262 /* Very basic selection callback: just use any certificate chain
1263  * reported as valid. More sophisticated could prioritise according
1264  * to local policy.
1265  */
1266 static int set_cert_cb(SSL *ssl, void *arg)
1267         {
1268         int i, rv;
1269         SSL_EXCERT *exc = arg;
1270         SSL_certs_clear(ssl);
1271
1272         if (!exc)
1273                 return 1;
1274
1275         /* Go to end of list and traverse backwards since we prepend
1276          * newer entries this retains the original order.
1277          */
1278         while (exc->next)
1279                 exc = exc->next;
1280
1281         i = 0;
1282
1283         while(exc)
1284                 {
1285                 i++;
1286                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1287                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1288                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1289                                                         XN_FLAG_ONELINE);
1290                 BIO_puts(bio_err, "\n");
1291
1292                 print_chain_flags(bio_err, rv);
1293                 if (rv & CERT_PKEY_VALID)
1294                         {
1295                         SSL_use_certificate(ssl, exc->cert);
1296                         SSL_use_PrivateKey(ssl, exc->key);
1297                         /* NB: we wouldn't normally do this as it is
1298                          * not efficient building chains on each connection
1299                          * better to cache the chain in advance.
1300                          */
1301                         if (exc->build_chain)
1302                                 {
1303                                 if (!SSL_build_cert_chain(ssl, 0))
1304                                         return 0;
1305                                 }
1306                         else if (exc->chain)
1307                                 SSL_set1_chain(ssl, exc->chain);
1308                         }
1309                 exc = exc->prev;
1310                 }
1311         return 1;
1312         }
1313
1314 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1315         {
1316         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1317         }
1318
1319 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1320         {
1321         SSL_EXCERT *exc;
1322         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1323         if (!exc)
1324                 return 0;
1325         exc->certfile = NULL;
1326         exc->keyfile = NULL;
1327         exc->chainfile = NULL;
1328         exc->cert = NULL;
1329         exc->key = NULL;
1330         exc->chain = NULL;
1331         exc->prev = NULL;
1332         exc->build_chain = 0;
1333
1334         exc->next = *pexc;
1335         *pexc = exc;
1336
1337         if (exc->next)
1338                 {
1339                 exc->certform = exc->next->certform;
1340                 exc->keyform = exc->next->keyform;
1341                 exc->next->prev = exc;
1342                 }
1343         else
1344                 {
1345                 exc->certform = FORMAT_PEM;
1346                 exc->keyform = FORMAT_PEM;
1347                 }
1348         return 1;
1349
1350         }
1351
1352 void ssl_excert_free(SSL_EXCERT *exc)
1353         {
1354         SSL_EXCERT *curr;
1355         while (exc)
1356                 {
1357                 if (exc->cert)
1358                         X509_free(exc->cert);
1359                 if (exc->key)
1360                         EVP_PKEY_free(exc->key);
1361                 if (exc->chain)
1362                         sk_X509_pop_free(exc->chain, X509_free);
1363                 curr = exc;
1364                 exc = exc->next;
1365                 OPENSSL_free(curr);
1366                 }
1367         }
1368
1369 int load_excert(SSL_EXCERT **pexc, BIO *err)
1370         {
1371         SSL_EXCERT *exc = *pexc;
1372         if (!exc)
1373                 return 1;
1374         /* If nothing in list, free and set to NULL */
1375         if (!exc->certfile && !exc->next)
1376                 {
1377                 ssl_excert_free(exc);
1378                 *pexc = NULL;
1379                 return 1;
1380                 }
1381         for(; exc; exc=exc->next)
1382                 {
1383                 if (!exc->certfile)
1384                         {
1385                         BIO_printf(err, "Missing filename\n");
1386                         return 0;
1387                         }
1388                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1389                                         NULL, NULL, "Server Certificate");
1390                 if (!exc->cert)
1391                         return 0;
1392                 if (exc->keyfile)
1393                         exc->keyfile = exc->certfile;
1394                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1395                                         NULL, NULL, "Server Certificate");
1396                 if (!exc->key)
1397                         return 0;
1398                 if (exc->chainfile)
1399                         {
1400                         exc->chain = load_certs(err,
1401                                                 exc->chainfile, FORMAT_PEM,
1402                                                 NULL, NULL,
1403                                                 "Server Chain");
1404                         if (!exc->chainfile)
1405                                 return 0;
1406                         }
1407                 }
1408         return 1;
1409         }
1410
1411
1412 int args_excert(char ***pargs, int *pargc,
1413                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1414         {
1415         char *arg = **pargs, *argn = (*pargs)[1];
1416         SSL_EXCERT *exc = *pexc;
1417         int narg = 2;
1418         if (!exc)
1419                 {
1420                 if (ssl_excert_prepend(&exc))
1421                         *pexc = exc;
1422                 else
1423                         {
1424                         BIO_printf(err, "Error initialising xcert\n");
1425                         *badarg = 1;
1426                         goto err;
1427                         }
1428                 }
1429         if (strcmp(arg, "-xcert") == 0)
1430                 {
1431                 if (!argn)
1432                         {
1433                         *badarg = 1;
1434                         return 1;
1435                         }
1436                 if (exc->certfile && !ssl_excert_prepend(&exc))
1437                         {
1438                         BIO_printf(err, "Error adding xcert\n");
1439                         *badarg = 1;
1440                         goto err;
1441                         }
1442                 exc->certfile = argn;
1443                 }
1444         else if (strcmp(arg,"-xkey") == 0)
1445                 {
1446                 if (!argn)
1447                         {
1448                         *badarg = 1;
1449                         return 1;
1450                         }
1451                 if (exc->keyfile)
1452                         {
1453                         BIO_printf(err, "Key already specified\n");
1454                         *badarg = 1;
1455                         return 1;
1456                         }
1457                 exc->keyfile = argn;
1458                 }
1459         else if (strcmp(arg,"-xchain") == 0)
1460                 {
1461                 if (!argn)
1462                         {
1463                         *badarg = 1;
1464                         return 1;
1465                         }
1466                 if (exc->chainfile)
1467                         {
1468                         BIO_printf(err, "Chain already specified\n");
1469                         *badarg = 1;
1470                         return 1;
1471                         }
1472                 exc->chainfile = argn;
1473                 }
1474         else if (strcmp(arg,"-xchain_build") == 0)
1475                 {
1476                 narg = 1;
1477                 exc->build_chain = 1;
1478                 }
1479         else if (strcmp(arg,"-xcertform") == 0)
1480                 {
1481                 if (!argn)
1482                         {
1483                         *badarg = 1;
1484                         goto err;
1485                         }
1486                 exc->certform = str2fmt(argn);
1487                 }
1488         else if (strcmp(arg,"-xkeyform") == 0)
1489                 {
1490                 if (!argn)
1491                         {
1492                         *badarg = 1;
1493                         goto err;
1494                         }
1495                 exc->keyform = str2fmt(argn);
1496                 }
1497         else
1498                 return 0;
1499
1500         (*pargs) += narg;
1501
1502         if (pargc)
1503                 *pargc -= narg;
1504
1505         *pexc = exc;
1506
1507         return 1;
1508
1509         err:
1510         ERR_print_errors(err);
1511         ssl_excert_free(exc);
1512         *pexc = NULL;
1513         return 1;
1514         }
1515
1516 static void print_raw_cipherlist(BIO *bio, SSL *s)
1517         {
1518         const unsigned char *rlist;
1519         static const unsigned char scsv_id[] = {0, 0, 0xFF};
1520         size_t i, rlistlen, num;
1521         if (!SSL_is_server(s))
1522                 return;
1523         num = SSL_get0_raw_cipherlist(s, NULL);
1524         rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1525         BIO_puts(bio, "Client cipher list: ");
1526         for (i = 0; i < rlistlen; i += num, rlist += num)
1527                 {
1528                 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1529                 if (i)
1530                         BIO_puts(bio, ":");
1531                 if (c)
1532                         BIO_puts(bio, SSL_CIPHER_get_name(c));
1533                 else if (!memcmp(rlist, scsv_id - num + 3, num))
1534                         BIO_puts(bio, "SCSV");
1535                 else
1536                         {
1537                         size_t j;
1538                         BIO_puts(bio, "0x");
1539                         for (j = 0; j < num; j++)
1540                                 BIO_printf(bio, "%02X", rlist[j]);
1541                         }
1542                 }
1543         BIO_puts(bio, "\n");
1544         }
1545
1546
1547 void print_ssl_summary(BIO *bio, SSL *s)
1548         {
1549         const SSL_CIPHER *c;
1550         X509 *peer;
1551         /*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
1552         BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
1553         print_raw_cipherlist(bio, s);
1554         c = SSL_get_current_cipher(s);
1555         BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1556         do_print_sigalgs(bio, s, 0);
1557         peer = SSL_get_peer_certificate(s);
1558         if (peer)
1559                 {
1560                 int nid;
1561                 BIO_puts(bio, "Peer certificate: ");
1562                 X509_NAME_print_ex(bio, X509_get_subject_name(peer),
1563                                         0, XN_FLAG_ONELINE);
1564                 BIO_puts(bio, "\n");
1565                 if (SSL_get_peer_signature_nid(s, &nid))
1566                         BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
1567                 }
1568         else
1569                 BIO_puts(bio, "No peer certificate\n");
1570         if (peer)
1571                 X509_free(peer);
1572 #ifndef OPENSSL_NO_EC
1573         ssl_print_point_formats(bio, s);
1574         if (SSL_is_server(s))
1575                 ssl_print_curves(bio, s, 1);
1576         else
1577                 ssl_print_tmp_key(bio, s);
1578 #else
1579         if (!SSL_is_server(s))
1580                 ssl_print_tmp_key(bio, s);
1581 #endif
1582         }
1583
1584 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1585                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1586         {
1587         char *arg = **pargs, *argn = (*pargs)[1];
1588         int rv;
1589
1590         /* Attempt to run SSL configuration command */
1591         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1592         /* If parameter not recognised just return */
1593         if (rv == 0)
1594                 return 0;
1595         /* see if missing argument error */
1596         if (rv == -3)
1597                 {
1598                 BIO_printf(err, "%s needs an argument\n", arg);
1599                 *badarg = 1;
1600                 goto end;
1601                 }
1602         /* Check for some other error */
1603         if (rv < 0)
1604                 {
1605                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1606                                                 arg, argn ? argn : "");
1607                 *badarg = 1;
1608                 goto end;
1609                 }
1610         /* Store command and argument */
1611         /* If only one argument processed store value as NULL */
1612         if (rv == 1)
1613                 argn = NULL;
1614         if (!*pstr)
1615                 *pstr = sk_OPENSSL_STRING_new_null();
1616         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1617                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1618                 {
1619                 BIO_puts(err, "Memory allocation failure\n");
1620                 goto end;
1621                 }
1622
1623         end:
1624         if (*badarg)
1625                 ERR_print_errors(err);
1626
1627         return 1;
1628         }
1629
1630 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1631                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1632         {
1633         int i;
1634         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1635         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1636                 {
1637                 const char *param = sk_OPENSSL_STRING_value(str, i);
1638                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1639                 /* If no_ecdhe or named curve already specified don't need
1640                  * a default.
1641                  */
1642                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1643                         no_ecdhe = 1;
1644 #ifndef OPENSSL_NO_JPAKE
1645                 if (!no_jpake && !strcmp(param, "-cipher"))
1646                         {
1647                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1648                         return 0;
1649                         }
1650 #endif
1651                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1652                         {
1653                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1654                                                 param, value ? value : "");
1655                         ERR_print_errors(err);
1656                         return 0;
1657                         }
1658                 }
1659         /* This is a special case to keep existing s_server functionality:
1660          * if we don't have any curve specified *and* we haven't disabled
1661          * ECDHE then use P-256.
1662          */
1663         if (!no_ecdhe)
1664                 {
1665                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1666                         {
1667                         BIO_puts(err, "Error setting EC curve\n");
1668                         ERR_print_errors(err);
1669                         return 0;
1670                         }
1671                 }
1672 #ifndef OPENSSL_NO_JPAKE
1673         if (!no_jpake)
1674                 {
1675                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1676                         {
1677                         BIO_puts(err, "Error setting cipher to PSK\n");
1678                         ERR_print_errors(err);
1679                         return 0;
1680                         }
1681                 }
1682 #endif
1683         return 1;
1684         }
1685
1686 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1687         {
1688         X509_CRL *crl;
1689         int i;
1690         for (i = 0; i < sk_X509_CRL_num(crls); i++)
1691                 {
1692                 crl = sk_X509_CRL_value(crls, i);
1693                 X509_STORE_add_crl(st, crl);
1694                 }
1695         return 1;
1696         }
1697
1698 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1699         {
1700         X509_STORE *st;
1701         st = SSL_CTX_get_cert_store(ctx);
1702         add_crls_store(st, crls);
1703         if (crl_download)
1704                 store_setup_crl_download(st);
1705         return 1;
1706         }
1707
1708 int ssl_load_stores(SSL_CTX *ctx,
1709                         const char *vfyCApath, const char *vfyCAfile,
1710                         const char *chCApath, const char *chCAfile,
1711                         STACK_OF(X509_CRL) *crls, int crl_download)
1712         {
1713         X509_STORE *vfy = NULL, *ch = NULL;
1714         int rv = 0;
1715         if (vfyCApath || vfyCAfile)
1716                 {
1717                 vfy = X509_STORE_new();
1718                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1719                         goto err;
1720                 add_crls_store(vfy, crls);
1721                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1722                 if (crl_download)
1723                         store_setup_crl_download(vfy);
1724                 }
1725         if (chCApath || chCAfile)
1726                 {
1727                 ch = X509_STORE_new();
1728                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1729                         goto err;
1730                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1731                 }
1732         rv = 1;
1733         err:
1734         if (vfy)
1735                 X509_STORE_free(vfy);
1736         if (ch)
1737                 X509_STORE_free(ch);
1738         return rv;
1739         }