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         int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
 263         if (cert == NULL)
 264                 return 1;
 265         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
 266                 {
 267                 BIO_printf(bio_err,"error setting certificate\n");
 268                 ERR_print_errors(bio_err);
 269                 return 0;
 270                 }
 271
 272         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
 273                 {
 274                 BIO_printf(bio_err,"error setting private key\n");
 275                 ERR_print_errors(bio_err);
 276                 return 0;
 277                 }
 278
 279         /* Now we know that a key and cert have been set against
 280          * the SSL context */
 281         if (!SSL_CTX_check_private_key(ctx))
 282                 {
 283                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 284                 return 0;
 285                 }
 286         if (chain && !SSL_CTX_set1_chain(ctx, chain))
 287                 {
 288                 BIO_printf(bio_err,"error setting certificate chain\n");
 289                 ERR_print_errors(bio_err);
 290                 return 0;
 291                 }
 292         if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags))
 293                 {
 294                 BIO_printf(bio_err,"error building certificate chain\n");
 295                 ERR_print_errors(bio_err);
 296                 return 0;
 297                 }
 298         return 1;
 299         }
 300
 301 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
 302         {
 303         const unsigned char *p;
 304         int i;
 305         int cert_type_num = SSL_get0_certificate_types(s, &p);
 306         if (!cert_type_num)
 307                 return;
 308         BIO_puts(bio, "Client Certificate Types: ");
 309         for (i = 0; i < cert_type_num; i++)
 310                 {
 311                 unsigned char cert_type = p[i];
 312                 char *cname;
 313                 switch(cert_type)
 314                         {
 315                 case TLS_CT_RSA_SIGN:
 316                         cname = "RSA sign";
 317                         break;
 318
 319                 case TLS_CT_DSS_SIGN:
 320                         cname = "DSA sign";
 321                         break;
 322
 323                 case TLS_CT_RSA_FIXED_DH:
 324                         cname = "RSA fixed DH";
 325                         break;
 326
 327                 case TLS_CT_DSS_FIXED_DH:
 328                         cname = "DSS fixed DH";
 329                         break;
 330
 331                 case TLS_CT_ECDSA_SIGN:
 332                         cname = "ECDSA sign";
 333                         break;
 334
 335                 case TLS_CT_RSA_FIXED_ECDH:
 336                         cname = "RSA fixed ECDH";
 337                         break;
 338
 339                 case TLS_CT_ECDSA_FIXED_ECDH:
 340                         cname = "ECDSA fixed ECDH";
 341                         break;
 342
 343                 case TLS_CT_GOST94_SIGN:
 344                         cname = "GOST94 Sign";
 345                         break;
 346
 347                 case TLS_CT_GOST01_SIGN:
 348                         cname = "GOST01 Sign";
 349                         break;
 350
 351                 default:
 352                          cname = NULL;
 353                         }
 354
 355                 if (i)
 356                         BIO_puts(bio, ", ");
 357
 358                 if (cname)
 359                         BIO_puts(bio, cname);
 360                 else
 361                         BIO_printf(bio, "UNKNOWN (%d),", cert_type);
 362                 }
 363         BIO_puts(bio, "\n");
 364         }
 365
 366 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
 367         {
 368         int i, nsig, client;
 369         client = SSL_is_server(s) ? 0 : 1;
 370         if (shared)
 371                 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
 372                                                         NULL, NULL);
 373         else
 374                 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 375         if (nsig == 0)
 376                 return 1;
 377
 378         if (shared)
 379                 BIO_puts(out, "Shared ");
 380
 381         if (client)
 382                 BIO_puts(out, "Requested ");
 383         BIO_puts(out, "Signature Algorithms: ");
 384         for (i = 0; i < nsig; i++)
 385                 {
 386                 int hash_nid, sign_nid;
 387                 unsigned char rhash, rsign;
 388                 const char *sstr = NULL;
 389                 if (shared)
 390                         SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 391                                                         &rsign, &rhash);
 392                 else
 393                         SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 394                                                         &rsign, &rhash);
 395                 if (i)
 396                         BIO_puts(out, ":");
 397                 if (sign_nid == EVP_PKEY_RSA)
 398                         sstr = "RSA";
 399                 else if(sign_nid == EVP_PKEY_DSA)
 400                         sstr = "DSA";
 401                 else if(sign_nid == EVP_PKEY_EC)
 402                         sstr = "ECDSA";
 403                 if (sstr)
 404                         BIO_printf(out,"%s+", sstr);
 405                 else
 406                         BIO_printf(out,"0x%02X+", (int)rsign);
 407                 if (hash_nid != NID_undef)
 408                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
 409                 else
 410                         BIO_printf(out,"0x%02X", (int)rhash);
 411                 }
 412         BIO_puts(out, "\n");
 413         return 1;
 414         }
 415
 416 int ssl_print_sigalgs(BIO *out, SSL *s)
 417         {
 418         int mdnid;
 419         if (!SSL_is_server(s))
 420                 ssl_print_client_cert_types(out, s);
 421         do_print_sigalgs(out, s, 0);
 422         do_print_sigalgs(out, s, 1);
 423         if (SSL_get_peer_signature_nid(s, &mdnid))
 424                 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
 425         return 1;
 426         }
 427 #ifndef OPENSSL_NO_EC
 428 int ssl_print_point_formats(BIO *out, SSL *s)
 429         {
 430         int i, nformats;
 431         const char *pformats;
 432         nformats = SSL_get0_ec_point_formats(s, &pformats);
 433         if (nformats <= 0)
 434                 return 1;
 435         BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
 436         for (i = 0; i < nformats; i++, pformats++)
 437                 {
 438                 if (i)
 439                         BIO_puts(out, ":");
 440                 switch(*pformats)
 441                         {
 442                 case TLSEXT_ECPOINTFORMAT_uncompressed:
 443                         BIO_puts(out, "uncompressed");
 444                         break;
 445
 446                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
 447                         BIO_puts(out, "ansiX962_compressed_prime");
 448                         break;
 449
 450                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
 451                         BIO_puts(out, "ansiX962_compressed_char2");
 452                         break;
 453
 454                 default:
 455                         BIO_printf(out, "unknown(%d)", (int)*pformats);
 456                         break;
 457
 458                         }
 459                 }
 460         if (nformats <= 0)
 461                 BIO_puts(out, "NONE");
 462         BIO_puts(out, "\n");
 463         return 1;
 464         }
 465
 466 int ssl_print_curves(BIO *out, SSL *s, int noshared)
 467         {
 468         int i, ncurves, *curves, nid;
 469         const char *cname;
 470         ncurves = SSL_get1_curves(s, NULL);
 471         if (ncurves <= 0)
 472                 return 1;
 473         curves = OPENSSL_malloc(ncurves * sizeof(int));
 474         SSL_get1_curves(s, curves);
 475
 476         BIO_puts(out, "Supported Elliptic Curves: ");
 477         for (i = 0; i < ncurves; i++)
 478                 {
 479                 if (i)
 480                         BIO_puts(out, ":");
 481                 nid = curves[i];
 482                 /* If unrecognised print out hex version */
 483                 if (nid & TLSEXT_nid_unknown)
 484                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 485                 else
 486                         {
 487                         /* Use NIST name for curve if it exists */
 488                         cname = EC_curve_nid2nist(nid);
 489                         if (!cname)
 490                                 cname = OBJ_nid2sn(nid);
 491                         BIO_printf(out, "%s", cname);
 492                         }
 493                 }
 494         if (ncurves == 0)
 495                 BIO_puts(out, "NONE");
 496         OPENSSL_free(curves);
 497         if (noshared)
 498                 {
 499                 BIO_puts(out, "\n");
 500                 return 1;
 501                 }
 502         BIO_puts(out, "\nShared Elliptic curves: ");
 503         ncurves = SSL_get_shared_curve(s, -1);
 504         for (i = 0; i < ncurves; i++)
 505                 {
 506                 if (i)
 507                         BIO_puts(out, ":");
 508                 nid = SSL_get_shared_curve(s, i);
 509                 cname = EC_curve_nid2nist(nid);
 510                 if (!cname)
 511                         cname = OBJ_nid2sn(nid);
 512                 BIO_printf(out, "%s", cname);
 513                 }
 514         if (ncurves == 0)
 515                 BIO_puts(out, "NONE");
 516         BIO_puts(out, "\n");
 517         return 1;
 518         }
 519 #endif
 520 int ssl_print_tmp_key(BIO *out, SSL *s)
 521         {
 522         EVP_PKEY *key;
 523         if (!SSL_get_server_tmp_key(s, &key))
 524                 return 1;
 525         BIO_puts(out, "Server Temp Key: ");
 526         switch (EVP_PKEY_id(key))
 527                 {
 528         case EVP_PKEY_RSA:
 529                 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
 530                 break;
 531
 532         case EVP_PKEY_DH:
 533                 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
 534                 break;
 535 #ifndef OPENSSL_NO_ECDH
 536         case EVP_PKEY_EC:
 537                         {
 538                         EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
 539                         int nid;
 540                         const char *cname;
 541                         nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
 542                         EC_KEY_free(ec);
 543                         cname = EC_curve_nid2nist(nid);
 544                         if (!cname)
 545                                 cname = OBJ_nid2sn(nid);
 546                         BIO_printf(out, "ECDH, %s, %d bits\n",
 547                                                 cname, EVP_PKEY_bits(key));
 548                         }
 549 #endif
 550                 }
 551         EVP_PKEY_free(key);
 552         return 1;
 553         }
 554
 555
 556 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 557                                    int argi, long argl, long ret)
 558         {
 559         BIO *out;
 560
 561         out=(BIO *)BIO_get_callback_arg(bio);
 562         if (out == NULL) return(ret);
 563
 564         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 565                 {
 566                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 567                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 568                 BIO_dump(out,argp,(int)ret);
 569                 return(ret);
 570                 }
 571         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 572                 {
 573                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 574                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 575                 BIO_dump(out,argp,(int)ret);
 576                 }
 577         return(ret);
 578         }
 579
 580 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 581         {
 582         const char *str;
 583         int w;
 584
 585         w=where& ~SSL_ST_MASK;
 586
 587         if (w & SSL_ST_CONNECT) str="SSL_connect";
 588         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 589         else str="undefined";
 590
 591         if (where & SSL_CB_LOOP)
 592                 {
 593                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 594                 }
 595         else if (where & SSL_CB_ALERT)
 596                 {
 597                 str=(where & SSL_CB_READ)?"read":"write";
 598                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 599                         str,
 600                         SSL_alert_type_string_long(ret),
 601                         SSL_alert_desc_string_long(ret));
 602                 }
 603         else if (where & SSL_CB_EXIT)
 604                 {
 605                 if (ret == 0)
 606                         BIO_printf(bio_err,"%s:failed in %s\n",
 607                                 str,SSL_state_string_long(s));
 608                 else if (ret < 0)
 609                         {
 610                         BIO_printf(bio_err,"%s:error in %s\n",
 611                                 str,SSL_state_string_long(s));
 612                         }
 613                 }
 614         }
 615
 616
 617 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 618         {
 619         BIO *bio = arg;
 620         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 621
 622         str_write_p = write_p ? ">>>" : "<<<";
 623
 624         switch (version)
 625                 {
 626         case SSL2_VERSION:
 627                 str_version = "SSL 2.0";
 628                 break;
 629         case SSL3_VERSION:
 630                 str_version = "SSL 3.0 ";
 631                 break;
 632         case TLS1_VERSION:
 633                 str_version = "TLS 1.0 ";
 634                 break;
 635         case TLS1_1_VERSION:
 636                 str_version = "TLS 1.1 ";
 637                 break;
 638         case TLS1_2_VERSION:
 639                 str_version = "TLS 1.2 ";
 640                 break;
 641         case DTLS1_VERSION:
 642                 str_version = "DTLS 1.0 ";
 643                 break;
 644         case DTLS1_BAD_VER:
 645                 str_version = "DTLS 1.0 (bad) ";
 646                 break;
 647         default:
 648                 str_version = "???";
 649                 }
 650
 651         if (version == SSL2_VERSION)
 652                 {
 653                 str_details1 = "???";
 654
 655                 if (len > 0)
 656                         {
 657                         switch (((const unsigned char*)buf)[0])
 658                                 {
 659                                 case 0:
 660                                         str_details1 = ", ERROR:";
 661                                         str_details2 = " ???";
 662                                         if (len >= 3)
 663                                                 {
 664                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 665
 666                                                 switch (err)
 667                                                         {
 668                                                 case 0x0001:
 669                                                         str_details2 = " NO-CIPHER-ERROR";
 670                                                         break;
 671                                                 case 0x0002:
 672                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 673                                                         break;
 674                                                 case 0x0004:
 675                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 676                                                         break;
 677                                                 case 0x0006:
 678                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 679                                                         break;
 680                                                         }
 681                                                 }
 682
 683                                         break;
 684                                 case 1:
 685                                         str_details1 = ", CLIENT-HELLO";
 686                                         break;
 687                                 case 2:
 688                                         str_details1 = ", CLIENT-MASTER-KEY";
 689                                         break;
 690                                 case 3:
 691                                         str_details1 = ", CLIENT-FINISHED";
 692                                         break;
 693                                 case 4:
 694                                         str_details1 = ", SERVER-HELLO";
 695                                         break;
 696                                 case 5:
 697                                         str_details1 = ", SERVER-VERIFY";
 698                                         break;
 699                                 case 6:
 700                                         str_details1 = ", SERVER-FINISHED";
 701                                         break;
 702                                 case 7:
 703                                         str_details1 = ", REQUEST-CERTIFICATE";
 704                                         break;
 705                                 case 8:
 706                                         str_details1 = ", CLIENT-CERTIFICATE";
 707                                         break;
 708                                 }
 709                         }
 710                 }
 711
 712         if (version == SSL3_VERSION ||
 713             version == TLS1_VERSION ||
 714             version == TLS1_1_VERSION ||
 715             version == TLS1_2_VERSION ||
 716             version == DTLS1_VERSION ||
 717             version == DTLS1_BAD_VER)
 718                 {
 719                 switch (content_type)
 720                         {
 721                 case 20:
 722                         str_content_type = "ChangeCipherSpec";
 723                         break;
 724                 case 21:
 725                         str_content_type = "Alert";
 726                         break;
 727                 case 22:
 728                         str_content_type = "Handshake";
 729                         break;
 730                         }
 731
 732                 if (content_type == 21) /* Alert */
 733                         {
 734                         str_details1 = ", ???";
 735
 736                         if (len == 2)
 737                                 {
 738                                 switch (((const unsigned char*)buf)[0])
 739                                         {
 740                                 case 1:
 741                                         str_details1 = ", warning";
 742                                         break;
 743                                 case 2:
 744                                         str_details1 = ", fatal";
 745                                         break;
 746                                         }
 747
 748                                 str_details2 = " ???";
 749                                 switch (((const unsigned char*)buf)[1])
 750                                         {
 751                                 case 0:
 752                                         str_details2 = " close_notify";
 753                                         break;
 754                                 case 10:
 755                                         str_details2 = " unexpected_message";
 756                                         break;
 757                                 case 20:
 758                                         str_details2 = " bad_record_mac";
 759                                         break;
 760                                 case 21:
 761                                         str_details2 = " decryption_failed";
 762                                         break;
 763                                 case 22:
 764                                         str_details2 = " record_overflow";
 765                                         break;
 766                                 case 30:
 767                                         str_details2 = " decompression_failure";
 768                                         break;
 769                                 case 40:
 770                                         str_details2 = " handshake_failure";
 771                                         break;
 772                                 case 42:
 773                                         str_details2 = " bad_certificate";
 774                                         break;
 775                                 case 43:
 776                                         str_details2 = " unsupported_certificate";
 777                                         break;
 778                                 case 44:
 779                                         str_details2 = " certificate_revoked";
 780                                         break;
 781                                 case 45:
 782                                         str_details2 = " certificate_expired";
 783                                         break;
 784                                 case 46:
 785                                         str_details2 = " certificate_unknown";
 786                                         break;
 787                                 case 47:
 788                                         str_details2 = " illegal_parameter";
 789                                         break;
 790                                 case 48:
 791                                         str_details2 = " unknown_ca";
 792                                         break;
 793                                 case 49:
 794                                         str_details2 = " access_denied";
 795                                         break;
 796                                 case 50:
 797                                         str_details2 = " decode_error";
 798                                         break;
 799                                 case 51:
 800                                         str_details2 = " decrypt_error";
 801                                         break;
 802                                 case 60:
 803                                         str_details2 = " export_restriction";
 804                                         break;
 805                                 case 70:
 806                                         str_details2 = " protocol_version";
 807                                         break;
 808                                 case 71:
 809                                         str_details2 = " insufficient_security";
 810                                         break;
 811                                 case 80:
 812                                         str_details2 = " internal_error";
 813                                         break;
 814                                 case 90:
 815                                         str_details2 = " user_canceled";
 816                                         break;
 817                                 case 100:
 818                                         str_details2 = " no_renegotiation";
 819                                         break;
 820                                 case 110:
 821                                         str_details2 = " unsupported_extension";
 822                                         break;
 823                                 case 111:
 824                                         str_details2 = " certificate_unobtainable";
 825                                         break;
 826                                 case 112:
 827                                         str_details2 = " unrecognized_name";
 828                                         break;
 829                                 case 113:
 830                                         str_details2 = " bad_certificate_status_response";
 831                                         break;
 832                                 case 114:
 833                                         str_details2 = " bad_certificate_hash_value";
 834                                         break;
 835                                 case 115:
 836                                         str_details2 = " unknown_psk_identity";
 837                                         break;
 838                                         }
 839                                 }
 840                         }
 841
 842                 if (content_type == 22) /* Handshake */
 843                         {
 844                         str_details1 = "???";
 845
 846                         if (len > 0)
 847                                 {
 848                                 switch (((const unsigned char*)buf)[0])
 849                                         {
 850                                 case 0:
 851                                         str_details1 = ", HelloRequest";
 852                                         break;
 853                                 case 1:
 854                                         str_details1 = ", ClientHello";
 855                                         break;
 856                                 case 2:
 857                                         str_details1 = ", ServerHello";
 858                                         break;
 859                                 case 3:
 860                                         str_details1 = ", HelloVerifyRequest";
 861                                         break;
 862                                 case 11:
 863                                         str_details1 = ", Certificate";
 864                                         break;
 865                                 case 12:
 866                                         str_details1 = ", ServerKeyExchange";
 867                                         break;
 868                                 case 13:
 869                                         str_details1 = ", CertificateRequest";
 870                                         break;
 871                                 case 14:
 872                                         str_details1 = ", ServerHelloDone";
 873                                         break;
 874                                 case 15:
 875                                         str_details1 = ", CertificateVerify";
 876                                         break;
 877                                 case 16:
 878                                         str_details1 = ", ClientKeyExchange";
 879                                         break;
 880                                 case 20:
 881                                         str_details1 = ", Finished";
 882                                         break;
 883                                 case 23:
 884                                         str_details1 = ", SupplementalData";
 885                                         break;
 886                                         }
 887                                 }
 888                         }
 889
 890 #ifndef OPENSSL_NO_HEARTBEATS
 891                 if (content_type == 24) /* Heartbeat */
 892                         {
 893                         str_details1 = ", Heartbeat";
 894
 895                         if (len > 0)
 896                                 {
 897                                 switch (((const unsigned char*)buf)[0])
 898                                         {
 899                                 case 1:
 900                                         str_details1 = ", HeartbeatRequest";
 901                                         break;
 902                                 case 2:
 903                                         str_details1 = ", HeartbeatResponse";
 904                                         break;
 905                                         }
 906                                 }
 907                         }
 908 #endif
 909                 }
 910
 911         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);
 912
 913         if (len > 0)
 914                 {
 915                 size_t num, i;
 916
 917                 BIO_printf(bio, "   ");
 918                 num = len;
 919 #if 0
 920                 if (num > 16)
 921                         num = 16;
 922 #endif
 923                 for (i = 0; i < num; i++)
 924                         {
 925                         if (i % 16 == 0 && i > 0)
 926                                 BIO_printf(bio, "\n   ");
 927                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 928                         }
 929                 if (i < len)
 930                         BIO_printf(bio, " ...");
 931                 BIO_printf(bio, "\n");
 932                 }
 933         (void)BIO_flush(bio);
 934         }
 935
 936 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 937                                         unsigned char *data, int len,
 938                                         void *arg)
 939         {
 940         BIO *bio = arg;
 941         char *extname;
 942
 943         switch(type)
 944                 {
 945                 case TLSEXT_TYPE_server_name:
 946                 extname = "server name";
 947                 break;
 948
 949                 case TLSEXT_TYPE_max_fragment_length:
 950                 extname = "max fragment length";
 951                 break;
 952
 953                 case TLSEXT_TYPE_client_certificate_url:
 954                 extname = "client certificate URL";
 955                 break;
 956
 957                 case TLSEXT_TYPE_trusted_ca_keys:
 958                 extname = "trusted CA keys";
 959                 break;
 960
 961                 case TLSEXT_TYPE_truncated_hmac:
 962                 extname = "truncated HMAC";
 963                 break;
 964
 965                 case TLSEXT_TYPE_status_request:
 966                 extname = "status request";
 967                 break;
 968
 969                 case TLSEXT_TYPE_user_mapping:
 970                 extname = "user mapping";
 971                 break;
 972
 973                 case TLSEXT_TYPE_client_authz:
 974                 extname = "client authz";
 975                 break;
 976
 977                 case TLSEXT_TYPE_server_authz:
 978                 extname = "server authz";
 979                 break;
 980
 981                 case TLSEXT_TYPE_cert_type:
 982                 extname = "cert type";
 983                 break;
 984
 985                 case TLSEXT_TYPE_elliptic_curves:
 986                 extname = "elliptic curves";
 987                 break;
 988
 989                 case TLSEXT_TYPE_ec_point_formats:
 990                 extname = "EC point formats";
 991                 break;
 992
 993                 case TLSEXT_TYPE_srp:
 994                 extname = "SRP";
 995                 break;
 996
 997                 case TLSEXT_TYPE_signature_algorithms:
 998                 extname = "signature algorithms";
 999                 break;
1000
1001                 case TLSEXT_TYPE_use_srtp:
1002                 extname = "use SRTP";
1003                 break;
1004
1005                 case TLSEXT_TYPE_heartbeat:
1006                 extname = "heartbeat";
1007                 break;
1008
1009                 case TLSEXT_TYPE_session_ticket:
1010                 extname = "session ticket";
1011                 break;
1012
1013                 case TLSEXT_TYPE_renegotiate:
1014                 extname = "renegotiation info";
1015                 break;
1016
1017 #ifdef TLSEXT_TYPE_opaque_prf_input
1018                 case TLSEXT_TYPE_opaque_prf_input:
1019                 extname = "opaque PRF input";
1020                 break;
1021 #endif
1022 #ifdef TLSEXT_TYPE_next_proto_neg
1023                 case TLSEXT_TYPE_next_proto_neg:
1024                 extname = "next protocol";
1025                 break;
1026 #endif
1027
1028                 default:
1029                 extname = "unknown";
1030                 break;
1031
1032                 }
1033
1034         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1035                         client_server ? "server": "client",
1036                         extname, type, len);
1037         BIO_dump(bio, (char *)data, len);
1038         (void)BIO_flush(bio);
1039         }
1040
1041 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1042         {
1043         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1044         unsigned int length, resultlength;
1045         union {
1046                 struct sockaddr sa;
1047                 struct sockaddr_in s4;
1048 #if OPENSSL_USE_IPV6
1049                 struct sockaddr_in6 s6;
1050 #endif
1051         } peer;
1052
1053         /* Initialize a random secret */
1054         if (!cookie_initialized)
1055                 {
1056                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1057                         {
1058                         BIO_printf(bio_err,"error setting random cookie secret\n");
1059                         return 0;
1060                         }
1061                 cookie_initialized = 1;
1062                 }
1063
1064         /* Read peer information */
1065         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1066
1067         /* Create buffer with peer's address and port */
1068         length = 0;
1069         switch (peer.sa.sa_family)
1070                 {
1071         case AF_INET:
1072                 length += sizeof(struct in_addr);
1073                 length += sizeof(peer.s4.sin_port);
1074                 break;
1075 #if OPENSSL_USE_IPV6
1076         case AF_INET6:
1077                 length += sizeof(struct in6_addr);
1078                 length += sizeof(peer.s6.sin6_port);
1079                 break;
1080 #endif
1081         default:
1082                 OPENSSL_assert(0);
1083                 break;
1084                 }
1085         buffer = OPENSSL_malloc(length);
1086
1087         if (buffer == NULL)
1088                 {
1089                 BIO_printf(bio_err,"out of memory\n");
1090                 return 0;
1091                 }
1092
1093         switch (peer.sa.sa_family)
1094                 {
1095         case AF_INET:
1096                 memcpy(buffer,
1097                        &peer.s4.sin_port,
1098                        sizeof(peer.s4.sin_port));
1099                 memcpy(buffer + sizeof(peer.s4.sin_port),
1100                        &peer.s4.sin_addr,
1101                        sizeof(struct in_addr));
1102                 break;
1103 #if OPENSSL_USE_IPV6
1104         case AF_INET6:
1105                 memcpy(buffer,
1106                        &peer.s6.sin6_port,
1107                        sizeof(peer.s6.sin6_port));
1108                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1109                        &peer.s6.sin6_addr,
1110                        sizeof(struct in6_addr));
1111                 break;
1112 #endif
1113         default:
1114                 OPENSSL_assert(0);
1115                 break;
1116                 }
1117
1118         /* Calculate HMAC of buffer using the secret */
1119         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1120              buffer, length, result, &resultlength);
1121         OPENSSL_free(buffer);
1122
1123         memcpy(cookie, result, resultlength);
1124         *cookie_len = resultlength;
1125
1126         return 1;
1127         }
1128
1129 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1130         {
1131         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1132         unsigned int length, resultlength;
1133         union {
1134                 struct sockaddr sa;
1135                 struct sockaddr_in s4;
1136 #if OPENSSL_USE_IPV6
1137                 struct sockaddr_in6 s6;
1138 #endif
1139         } peer;
1140
1141         /* If secret isn't initialized yet, the cookie can't be valid */
1142         if (!cookie_initialized)
1143                 return 0;
1144
1145         /* Read peer information */
1146         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1147
1148         /* Create buffer with peer's address and port */
1149         length = 0;
1150         switch (peer.sa.sa_family)
1151                 {
1152         case AF_INET:
1153                 length += sizeof(struct in_addr);
1154                 length += sizeof(peer.s4.sin_port);
1155                 break;
1156 #if OPENSSL_USE_IPV6
1157         case AF_INET6:
1158                 length += sizeof(struct in6_addr);
1159                 length += sizeof(peer.s6.sin6_port);
1160                 break;
1161 #endif
1162         default:
1163                 OPENSSL_assert(0);
1164                 break;
1165                 }
1166         buffer = OPENSSL_malloc(length);
1167
1168         if (buffer == NULL)
1169                 {
1170                 BIO_printf(bio_err,"out of memory\n");
1171                 return 0;
1172                 }
1173
1174         switch (peer.sa.sa_family)
1175                 {
1176         case AF_INET:
1177                 memcpy(buffer,
1178                        &peer.s4.sin_port,
1179                        sizeof(peer.s4.sin_port));
1180                 memcpy(buffer + sizeof(peer.s4.sin_port),
1181                        &peer.s4.sin_addr,
1182                        sizeof(struct in_addr));
1183                 break;
1184 #if OPENSSL_USE_IPV6
1185         case AF_INET6:
1186                 memcpy(buffer,
1187                        &peer.s6.sin6_port,
1188                        sizeof(peer.s6.sin6_port));
1189                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1190                        &peer.s6.sin6_addr,
1191                        sizeof(struct in6_addr));
1192                 break;
1193 #endif
1194         default:
1195                 OPENSSL_assert(0);
1196                 break;
1197                 }
1198
1199         /* Calculate HMAC of buffer using the secret */
1200         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1201              buffer, length, result, &resultlength);
1202         OPENSSL_free(buffer);
1203
1204         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1205                 return 1;
1206
1207         return 0;
1208         }
1209
1210 /* Example of extended certificate handling. Where the standard support
1211  * of one certificate per algorithm is not sufficient an application
1212  * can decide which certificate(s) to use at runtime based on whatever
1213  * criteria it deems appropriate.
1214  */
1215
1216 /* Linked list of certificates, keys and chains */
1217 struct  ssl_excert_st
1218         {
1219         int certform;
1220         const char *certfile;
1221         int keyform;
1222         const char *keyfile;
1223         const char *chainfile;
1224         X509 *cert;
1225         EVP_PKEY *key;
1226         STACK_OF(X509) *chain;
1227         int build_chain;
1228         struct ssl_excert_st *next, *prev;
1229         };
1230
1231 struct chain_flags
1232         {
1233         int flag;
1234         const char *name;
1235         };
1236
1237 struct chain_flags chain_flags_list[] =
1238         {
1239                 {CERT_PKEY_VALID, "Overall Validity"},
1240                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1241                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1242                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1243                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1244                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1245                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1246                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1247                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1248                 {0, NULL}
1249         };
1250
1251
1252 static void print_chain_flags(BIO *out, int flags)
1253         {
1254         struct chain_flags *ctmp = chain_flags_list;
1255         while(ctmp->name)
1256                 {
1257                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1258                                 flags & ctmp->flag ? "OK" : "NOT OK");
1259                 ctmp++;
1260                 }
1261         }
1262
1263 /* Very basic selection callback: just use any certificate chain
1264  * reported as valid. More sophisticated could prioritise according
1265  * to local policy.
1266  */
1267 static int set_cert_cb(SSL *ssl, void *arg)
1268         {
1269         int i, rv;
1270         SSL_EXCERT *exc = arg;
1271 #ifdef CERT_CB_TEST_RETRY
1272         static int retry_cnt;
1273         if (retry_cnt < 5)
1274                 {
1275                 retry_cnt++;
1276                 fprintf(stderr, "Certificate callback retry test: count %d\n",
1277                                                                 retry_cnt);
1278                 return -1;
1279                 }
1280 #endif
1281         SSL_certs_clear(ssl);
1282
1283         if (!exc)
1284                 return 1;
1285
1286         /* Go to end of list and traverse backwards since we prepend
1287          * newer entries this retains the original order.
1288          */
1289         while (exc->next)
1290                 exc = exc->next;
1291
1292         i = 0;
1293
1294         while(exc)
1295                 {
1296                 i++;
1297                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1298                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1299                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1300                                                         XN_FLAG_ONELINE);
1301                 BIO_puts(bio_err, "\n");
1302
1303                 print_chain_flags(bio_err, rv);
1304                 if (rv & CERT_PKEY_VALID)
1305                         {
1306                         SSL_use_certificate(ssl, exc->cert);
1307                         SSL_use_PrivateKey(ssl, exc->key);
1308                         /* NB: we wouldn't normally do this as it is
1309                          * not efficient building chains on each connection
1310                          * better to cache the chain in advance.
1311                          */
1312                         if (exc->build_chain)
1313                                 {
1314                                 if (!SSL_build_cert_chain(ssl, 0))
1315                                         return 0;
1316                                 }
1317                         else if (exc->chain)
1318                                 SSL_set1_chain(ssl, exc->chain);
1319                         }
1320                 exc = exc->prev;
1321                 }
1322         return 1;
1323         }
1324
1325 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1326         {
1327         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1328         }
1329
1330 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1331         {
1332         SSL_EXCERT *exc;
1333         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1334         if (!exc)
1335                 return 0;
1336         exc->certfile = NULL;
1337         exc->keyfile = NULL;
1338         exc->chainfile = NULL;
1339         exc->cert = NULL;
1340         exc->key = NULL;
1341         exc->chain = NULL;
1342         exc->prev = NULL;
1343         exc->build_chain = 0;
1344
1345         exc->next = *pexc;
1346         *pexc = exc;
1347
1348         if (exc->next)
1349                 {
1350                 exc->certform = exc->next->certform;
1351                 exc->keyform = exc->next->keyform;
1352                 exc->next->prev = exc;
1353                 }
1354         else
1355                 {
1356                 exc->certform = FORMAT_PEM;
1357                 exc->keyform = FORMAT_PEM;
1358                 }
1359         return 1;
1360
1361         }
1362
1363 void ssl_excert_free(SSL_EXCERT *exc)
1364         {
1365         SSL_EXCERT *curr;
1366         while (exc)
1367                 {
1368                 if (exc->cert)
1369                         X509_free(exc->cert);
1370                 if (exc->key)
1371                         EVP_PKEY_free(exc->key);
1372                 if (exc->chain)
1373                         sk_X509_pop_free(exc->chain, X509_free);
1374                 curr = exc;
1375                 exc = exc->next;
1376                 OPENSSL_free(curr);
1377                 }
1378         }
1379
1380 int load_excert(SSL_EXCERT **pexc, BIO *err)
1381         {
1382         SSL_EXCERT *exc = *pexc;
1383         if (!exc)
1384                 return 1;
1385         /* If nothing in list, free and set to NULL */
1386         if (!exc->certfile && !exc->next)
1387                 {
1388                 ssl_excert_free(exc);
1389                 *pexc = NULL;
1390                 return 1;
1391                 }
1392         for(; exc; exc=exc->next)
1393                 {
1394                 if (!exc->certfile)
1395                         {
1396                         BIO_printf(err, "Missing filename\n");
1397                         return 0;
1398                         }
1399                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1400                                         NULL, NULL, "Server Certificate");
1401                 if (!exc->cert)
1402                         return 0;
1403                 if (exc->keyfile)
1404                         exc->keyfile = exc->certfile;
1405                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1406                                         NULL, NULL, "Server Certificate");
1407                 if (!exc->key)
1408                         return 0;
1409                 if (exc->chainfile)
1410                         {
1411                         exc->chain = load_certs(err,
1412                                                 exc->chainfile, FORMAT_PEM,
1413                                                 NULL, NULL,
1414                                                 "Server Chain");
1415                         if (!exc->chainfile)
1416                                 return 0;
1417                         }
1418                 }
1419         return 1;
1420         }
1421
1422
1423 int args_excert(char ***pargs, int *pargc,
1424                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1425         {
1426         char *arg = **pargs, *argn = (*pargs)[1];
1427         SSL_EXCERT *exc = *pexc;
1428         int narg = 2;
1429         if (!exc)
1430                 {
1431                 if (ssl_excert_prepend(&exc))
1432                         *pexc = exc;
1433                 else
1434                         {
1435                         BIO_printf(err, "Error initialising xcert\n");
1436                         *badarg = 1;
1437                         goto err;
1438                         }
1439                 }
1440         if (strcmp(arg, "-xcert") == 0)
1441                 {
1442                 if (!argn)
1443                         {
1444                         *badarg = 1;
1445                         return 1;
1446                         }
1447                 if (exc->certfile && !ssl_excert_prepend(&exc))
1448                         {
1449                         BIO_printf(err, "Error adding xcert\n");
1450                         *badarg = 1;
1451                         goto err;
1452                         }
1453                 exc->certfile = argn;
1454                 }
1455         else if (strcmp(arg,"-xkey") == 0)
1456                 {
1457                 if (!argn)
1458                         {
1459                         *badarg = 1;
1460                         return 1;
1461                         }
1462                 if (exc->keyfile)
1463                         {
1464                         BIO_printf(err, "Key already specified\n");
1465                         *badarg = 1;
1466                         return 1;
1467                         }
1468                 exc->keyfile = argn;
1469                 }
1470         else if (strcmp(arg,"-xchain") == 0)
1471                 {
1472                 if (!argn)
1473                         {
1474                         *badarg = 1;
1475                         return 1;
1476                         }
1477                 if (exc->chainfile)
1478                         {
1479                         BIO_printf(err, "Chain already specified\n");
1480                         *badarg = 1;
1481                         return 1;
1482                         }
1483                 exc->chainfile = argn;
1484                 }
1485         else if (strcmp(arg,"-xchain_build") == 0)
1486                 {
1487                 narg = 1;
1488                 exc->build_chain = 1;
1489                 }
1490         else if (strcmp(arg,"-xcertform") == 0)
1491                 {
1492                 if (!argn)
1493                         {
1494                         *badarg = 1;
1495                         goto err;
1496                         }
1497                 exc->certform = str2fmt(argn);
1498                 }
1499         else if (strcmp(arg,"-xkeyform") == 0)
1500                 {
1501                 if (!argn)
1502                         {
1503                         *badarg = 1;
1504                         goto err;
1505                         }
1506                 exc->keyform = str2fmt(argn);
1507                 }
1508         else
1509                 return 0;
1510
1511         (*pargs) += narg;
1512
1513         if (pargc)
1514                 *pargc -= narg;
1515
1516         *pexc = exc;
1517
1518         return 1;
1519
1520         err:
1521         ERR_print_errors(err);
1522         ssl_excert_free(exc);
1523         *pexc = NULL;
1524         return 1;
1525         }
1526
1527 static void print_raw_cipherlist(BIO *bio, SSL *s)
1528         {
1529         const unsigned char *rlist;
1530         static const unsigned char scsv_id[] = {0, 0, 0xFF};
1531         size_t i, rlistlen, num;
1532         if (!SSL_is_server(s))
1533                 return;
1534         num = SSL_get0_raw_cipherlist(s, NULL);
1535         rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1536         BIO_puts(bio, "Client cipher list: ");
1537         for (i = 0; i < rlistlen; i += num, rlist += num)
1538                 {
1539                 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1540                 if (i)
1541                         BIO_puts(bio, ":");
1542                 if (c)
1543                         BIO_puts(bio, SSL_CIPHER_get_name(c));
1544                 else if (!memcmp(rlist, scsv_id - num + 3, num))
1545                         BIO_puts(bio, "SCSV");
1546                 else
1547                         {
1548                         size_t j;
1549                         BIO_puts(bio, "0x");
1550                         for (j = 0; j < num; j++)
1551                                 BIO_printf(bio, "%02X", rlist[j]);
1552                         }
1553                 }
1554         BIO_puts(bio, "\n");
1555         }
1556
1557
1558 void print_ssl_summary(BIO *bio, SSL *s)
1559         {
1560         const SSL_CIPHER *c;
1561         X509 *peer;
1562         /*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
1563         BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
1564         print_raw_cipherlist(bio, s);
1565         c = SSL_get_current_cipher(s);
1566         BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1567         do_print_sigalgs(bio, s, 0);
1568         peer = SSL_get_peer_certificate(s);
1569         if (peer)
1570                 {
1571                 int nid;
1572                 BIO_puts(bio, "Peer certificate: ");
1573                 X509_NAME_print_ex(bio, X509_get_subject_name(peer),
1574                                         0, XN_FLAG_ONELINE);
1575                 BIO_puts(bio, "\n");
1576                 if (SSL_get_peer_signature_nid(s, &nid))
1577                         BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
1578                 }
1579         else
1580                 BIO_puts(bio, "No peer certificate\n");
1581         if (peer)
1582                 X509_free(peer);
1583 #ifndef OPENSSL_NO_EC
1584         ssl_print_point_formats(bio, s);
1585         if (SSL_is_server(s))
1586                 ssl_print_curves(bio, s, 1);
1587         else
1588                 ssl_print_tmp_key(bio, s);
1589 #else
1590         if (!SSL_is_server(s))
1591                 ssl_print_tmp_key(bio, s);
1592 #endif
1593         }
1594
1595 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1596                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1597         {
1598         char *arg = **pargs, *argn = (*pargs)[1];
1599         int rv;
1600
1601         /* Attempt to run SSL configuration command */
1602         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1603         /* If parameter not recognised just return */
1604         if (rv == 0)
1605                 return 0;
1606         /* see if missing argument error */
1607         if (rv == -3)
1608                 {
1609                 BIO_printf(err, "%s needs an argument\n", arg);
1610                 *badarg = 1;
1611                 goto end;
1612                 }
1613         /* Check for some other error */
1614         if (rv < 0)
1615                 {
1616                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1617                                                 arg, argn ? argn : "");
1618                 *badarg = 1;
1619                 goto end;
1620                 }
1621         /* Store command and argument */
1622         /* If only one argument processed store value as NULL */
1623         if (rv == 1)
1624                 argn = NULL;
1625         if (!*pstr)
1626                 *pstr = sk_OPENSSL_STRING_new_null();
1627         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1628                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1629                 {
1630                 BIO_puts(err, "Memory allocation failure\n");
1631                 goto end;
1632                 }
1633
1634         end:
1635         if (*badarg)
1636                 ERR_print_errors(err);
1637
1638         return 1;
1639         }
1640
1641 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1642                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1643         {
1644         int i;
1645         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1646         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1647                 {
1648                 const char *param = sk_OPENSSL_STRING_value(str, i);
1649                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1650                 /* If no_ecdhe or named curve already specified don't need
1651                  * a default.
1652                  */
1653                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1654                         no_ecdhe = 1;
1655 #ifndef OPENSSL_NO_JPAKE
1656                 if (!no_jpake && !strcmp(param, "-cipher"))
1657                         {
1658                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1659                         return 0;
1660                         }
1661 #endif
1662                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1663                         {
1664                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1665                                                 param, value ? value : "");
1666                         ERR_print_errors(err);
1667                         return 0;
1668                         }
1669                 }
1670         /* This is a special case to keep existing s_server functionality:
1671          * if we don't have any curve specified *and* we haven't disabled
1672          * ECDHE then use P-256.
1673          */
1674         if (!no_ecdhe)
1675                 {
1676                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1677                         {
1678                         BIO_puts(err, "Error setting EC curve\n");
1679                         ERR_print_errors(err);
1680                         return 0;
1681                         }
1682                 }
1683 #ifndef OPENSSL_NO_JPAKE
1684         if (!no_jpake)
1685                 {
1686                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1687                         {
1688                         BIO_puts(err, "Error setting cipher to PSK\n");
1689                         ERR_print_errors(err);
1690                         return 0;
1691                         }
1692                 }
1693 #endif
1694         if (!SSL_CONF_CTX_finish(cctx))
1695                 {
1696                 BIO_puts(err, "Error finishing context\n");
1697                 ERR_print_errors(err);
1698                 return 0;
1699                 }
1700         return 1;
1701         }
1702
1703 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1704         {
1705         X509_CRL *crl;
1706         int i;
1707         for (i = 0; i < sk_X509_CRL_num(crls); i++)
1708                 {
1709                 crl = sk_X509_CRL_value(crls, i);
1710                 X509_STORE_add_crl(st, crl);
1711                 }
1712         return 1;
1713         }
1714
1715 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1716         {
1717         X509_STORE *st;
1718         st = SSL_CTX_get_cert_store(ctx);
1719         add_crls_store(st, crls);
1720         if (crl_download)
1721                 store_setup_crl_download(st);
1722         return 1;
1723         }
1724
1725 int ssl_load_stores(SSL_CTX *ctx,
1726                         const char *vfyCApath, const char *vfyCAfile,
1727                         const char *chCApath, const char *chCAfile,
1728                         STACK_OF(X509_CRL) *crls, int crl_download)
1729         {
1730         X509_STORE *vfy = NULL, *ch = NULL;
1731         int rv = 0;
1732         if (vfyCApath || vfyCAfile)
1733                 {
1734                 vfy = X509_STORE_new();
1735                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1736                         goto err;
1737                 add_crls_store(vfy, crls);
1738                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1739                 if (crl_download)
1740                         store_setup_crl_download(vfy);
1741                 }
1742         if (chCApath || chCAfile)
1743                 {
1744                 ch = X509_STORE_new();
1745                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1746                         goto err;
1747                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1748                 }
1749         rv = 1;
1750         err:
1751         if (vfy)
1752                 X509_STORE_free(vfy);
1753         if (ch)
1754                 X509_STORE_free(ch);
1755         return rv;
1756         }