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 <openssl/bn.h>
 124 #ifndef OPENSSL_NO_DH
 125 #include <openssl/dh.h>
 126 #endif
 127 #include "s_apps.h"
 128
 129 #define COOKIE_SECRET_LENGTH    16
 130
 131 int verify_depth=0;
 132 int verify_quiet=0;
 133 int verify_error=X509_V_OK;
 134 int verify_return_error=0;
 135 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
 136 int cookie_initialized=0;
 137
 138 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
 139         {
 140         X509 *err_cert;
 141         int err,depth;
 142
 143         err_cert=X509_STORE_CTX_get_current_cert(ctx);
 144         err=    X509_STORE_CTX_get_error(ctx);
 145         depth=  X509_STORE_CTX_get_error_depth(ctx);
 146
 147         if (!verify_quiet || !ok)
 148                 {
 149                 BIO_printf(bio_err,"depth=%d ",depth);
 150                 if (err_cert)
 151                         {
 152                         X509_NAME_print_ex(bio_err,
 153                                         X509_get_subject_name(err_cert),
 154                                         0, XN_FLAG_ONELINE);
 155                         BIO_puts(bio_err, "\n");
 156                         }
 157                 else
 158                         BIO_puts(bio_err, "<no cert>\n");
 159                 }
 160         if (!ok)
 161                 {
 162                 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
 163                         X509_verify_cert_error_string(err));
 164                 if (verify_depth >= depth)
 165                         {
 166                         if (!verify_return_error)
 167                                 ok=1;
 168                         verify_error=X509_V_OK;
 169                         }
 170                 else
 171                         {
 172                         ok=0;
 173                         verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
 174                         }
 175                 }
 176         switch (err)
 177                 {
 178         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
 179                 BIO_puts(bio_err,"issuer= ");
 180                 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
 181                                         0, XN_FLAG_ONELINE);
 182                 BIO_puts(bio_err, "\n");
 183                 break;
 184         case X509_V_ERR_CERT_NOT_YET_VALID:
 185         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
 186                 BIO_printf(bio_err,"notBefore=");
 187                 ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
 188                 BIO_printf(bio_err,"\n");
 189                 break;
 190         case X509_V_ERR_CERT_HAS_EXPIRED:
 191         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
 192                 BIO_printf(bio_err,"notAfter=");
 193                 ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
 194                 BIO_printf(bio_err,"\n");
 195                 break;
 196         case X509_V_ERR_NO_EXPLICIT_POLICY:
 197                 if (!verify_quiet)
 198                         policies_print(bio_err, ctx);
 199                 break;
 200                 }
 201         if (err == X509_V_OK && ok == 2 && !verify_quiet)
 202                 policies_print(bio_err, ctx);
 203         if (ok && !verify_quiet)
 204                 BIO_printf(bio_err,"verify return:%d\n",ok);
 205         return(ok);
 206         }
 207
 208 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
 209         {
 210         if (cert_file != NULL)
 211                 {
 212                 /*
 213                 SSL *ssl;
 214                 X509 *x509;
 215                 */
 216
 217                 if (SSL_CTX_use_certificate_file(ctx,cert_file,
 218                         SSL_FILETYPE_PEM) <= 0)
 219                         {
 220                         BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
 221                         ERR_print_errors(bio_err);
 222                         return(0);
 223                         }
 224                 if (key_file == NULL) key_file=cert_file;
 225                 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
 226                         SSL_FILETYPE_PEM) <= 0)
 227                         {
 228                         BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
 229                         ERR_print_errors(bio_err);
 230                         return(0);
 231                         }
 232
 233                 /*
 234                 In theory this is no longer needed
 235                 ssl=SSL_new(ctx);
 236                 x509=SSL_get_certificate(ssl);
 237
 238                 if (x509 != NULL) {
 239                         EVP_PKEY *pktmp;
 240                         pktmp = X509_get_pubkey(x509);
 241                         EVP_PKEY_copy_parameters(pktmp,
 242                                                 SSL_get_privatekey(ssl));
 243                         EVP_PKEY_free(pktmp);
 244                 }
 245                 SSL_free(ssl);
 246                 */
 247
 248                 /* If we are using DSA, we can copy the parameters from
 249                  * the private key */
 250
 251
 252                 /* Now we know that a key and cert have been set against
 253                  * the SSL context */
 254                 if (!SSL_CTX_check_private_key(ctx))
 255                         {
 256                         BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 257                         return(0);
 258                         }
 259                 }
 260         return(1);
 261         }
 262
 263 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
 264                        STACK_OF(X509) *chain, int build_chain)
 265         {
 266         int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
 267         if (cert == NULL)
 268                 return 1;
 269         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
 270                 {
 271                 BIO_printf(bio_err,"error setting certificate\n");
 272                 ERR_print_errors(bio_err);
 273                 return 0;
 274                 }
 275
 276         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
 277                 {
 278                 BIO_printf(bio_err,"error setting private key\n");
 279                 ERR_print_errors(bio_err);
 280                 return 0;
 281                 }
 282
 283         /* Now we know that a key and cert have been set against
 284          * the SSL context */
 285         if (!SSL_CTX_check_private_key(ctx))
 286                 {
 287                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 288                 return 0;
 289                 }
 290         if (chain && !SSL_CTX_set1_chain(ctx, chain))
 291                 {
 292                 BIO_printf(bio_err,"error setting certificate chain\n");
 293                 ERR_print_errors(bio_err);
 294                 return 0;
 295                 }
 296         if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags))
 297                 {
 298                 BIO_printf(bio_err,"error building certificate chain\n");
 299                 ERR_print_errors(bio_err);
 300                 return 0;
 301                 }
 302         return 1;
 303         }
 304
 305 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
 306         {
 307         const unsigned char *p;
 308         int i;
 309         int cert_type_num = SSL_get0_certificate_types(s, &p);
 310         if (!cert_type_num)
 311                 return;
 312         BIO_puts(bio, "Client Certificate Types: ");
 313         for (i = 0; i < cert_type_num; i++)
 314                 {
 315                 unsigned char cert_type = p[i];
 316                 char *cname;
 317                 switch(cert_type)
 318                         {
 319                 case TLS_CT_RSA_SIGN:
 320                         cname = "RSA sign";
 321                         break;
 322
 323                 case TLS_CT_DSS_SIGN:
 324                         cname = "DSA sign";
 325                         break;
 326
 327                 case TLS_CT_RSA_FIXED_DH:
 328                         cname = "RSA fixed DH";
 329                         break;
 330
 331                 case TLS_CT_DSS_FIXED_DH:
 332                         cname = "DSS fixed DH";
 333                         break;
 334
 335                 case TLS_CT_ECDSA_SIGN:
 336                         cname = "ECDSA sign";
 337                         break;
 338
 339                 case TLS_CT_RSA_FIXED_ECDH:
 340                         cname = "RSA fixed ECDH";
 341                         break;
 342
 343                 case TLS_CT_ECDSA_FIXED_ECDH:
 344                         cname = "ECDSA fixed ECDH";
 345                         break;
 346
 347                 case TLS_CT_GOST94_SIGN:
 348                         cname = "GOST94 Sign";
 349                         break;
 350
 351                 case TLS_CT_GOST01_SIGN:
 352                         cname = "GOST01 Sign";
 353                         break;
 354
 355                 default:
 356                          cname = NULL;
 357                         }
 358
 359                 if (i)
 360                         BIO_puts(bio, ", ");
 361
 362                 if (cname)
 363                         BIO_puts(bio, cname);
 364                 else
 365                         BIO_printf(bio, "UNKNOWN (%d),", cert_type);
 366                 }
 367         BIO_puts(bio, "\n");
 368         }
 369
 370 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
 371         {
 372         int i, nsig, client;
 373         client = SSL_is_server(s) ? 0 : 1;
 374         if (shared)
 375                 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
 376                                                         NULL, NULL);
 377         else
 378                 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 379         if (nsig == 0)
 380                 return 1;
 381
 382         if (shared)
 383                 BIO_puts(out, "Shared ");
 384
 385         if (client)
 386                 BIO_puts(out, "Requested ");
 387         BIO_puts(out, "Signature Algorithms: ");
 388         for (i = 0; i < nsig; i++)
 389                 {
 390                 int hash_nid, sign_nid;
 391                 unsigned char rhash, rsign;
 392                 const char *sstr = NULL;
 393                 if (shared)
 394                         SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 395                                                         &rsign, &rhash);
 396                 else
 397                         SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 398                                                         &rsign, &rhash);
 399                 if (i)
 400                         BIO_puts(out, ":");
 401                 if (sign_nid == EVP_PKEY_RSA)
 402                         sstr = "RSA";
 403                 else if(sign_nid == EVP_PKEY_DSA)
 404                         sstr = "DSA";
 405                 else if(sign_nid == EVP_PKEY_EC)
 406                         sstr = "ECDSA";
 407                 if (sstr)
 408                         BIO_printf(out,"%s+", sstr);
 409                 else
 410                         BIO_printf(out,"0x%02X+", (int)rsign);
 411                 if (hash_nid != NID_undef)
 412                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
 413                 else
 414                         BIO_printf(out,"0x%02X", (int)rhash);
 415                 }
 416         BIO_puts(out, "\n");
 417         return 1;
 418         }
 419
 420 int ssl_print_sigalgs(BIO *out, SSL *s)
 421         {
 422         int mdnid;
 423         if (!SSL_is_server(s))
 424                 ssl_print_client_cert_types(out, s);
 425         do_print_sigalgs(out, s, 0);
 426         do_print_sigalgs(out, s, 1);
 427         if (SSL_get_peer_signature_nid(s, &mdnid))
 428                 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
 429         return 1;
 430         }
 431 #ifndef OPENSSL_NO_EC
 432 int ssl_print_point_formats(BIO *out, SSL *s)
 433         {
 434         int i, nformats;
 435         const char *pformats;
 436         nformats = SSL_get0_ec_point_formats(s, &pformats);
 437         if (nformats <= 0)
 438                 return 1;
 439         BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
 440         for (i = 0; i < nformats; i++, pformats++)
 441                 {
 442                 if (i)
 443                         BIO_puts(out, ":");
 444                 switch(*pformats)
 445                         {
 446                 case TLSEXT_ECPOINTFORMAT_uncompressed:
 447                         BIO_puts(out, "uncompressed");
 448                         break;
 449
 450                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
 451                         BIO_puts(out, "ansiX962_compressed_prime");
 452                         break;
 453
 454                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
 455                         BIO_puts(out, "ansiX962_compressed_char2");
 456                         break;
 457
 458                 default:
 459                         BIO_printf(out, "unknown(%d)", (int)*pformats);
 460                         break;
 461
 462                         }
 463                 }
 464         if (nformats <= 0)
 465                 BIO_puts(out, "NONE");
 466         BIO_puts(out, "\n");
 467         return 1;
 468         }
 469
 470 int ssl_print_curves(BIO *out, SSL *s, int noshared)
 471         {
 472         int i, ncurves, *curves, nid;
 473         const char *cname;
 474         ncurves = SSL_get1_curves(s, NULL);
 475         if (ncurves <= 0)
 476                 return 1;
 477         curves = OPENSSL_malloc(ncurves * sizeof(int));
 478         SSL_get1_curves(s, curves);
 479
 480         BIO_puts(out, "Supported Elliptic Curves: ");
 481         for (i = 0; i < ncurves; i++)
 482                 {
 483                 if (i)
 484                         BIO_puts(out, ":");
 485                 nid = curves[i];
 486                 /* If unrecognised print out hex version */
 487                 if (nid & TLSEXT_nid_unknown)
 488                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 489                 else
 490                         {
 491                         /* Use NIST name for curve if it exists */
 492                         cname = EC_curve_nid2nist(nid);
 493                         if (!cname)
 494                                 cname = OBJ_nid2sn(nid);
 495                         BIO_printf(out, "%s", cname);
 496                         }
 497                 }
 498         if (ncurves == 0)
 499                 BIO_puts(out, "NONE");
 500         OPENSSL_free(curves);
 501         if (noshared)
 502                 {
 503                 BIO_puts(out, "\n");
 504                 return 1;
 505                 }
 506         BIO_puts(out, "\nShared Elliptic curves: ");
 507         ncurves = SSL_get_shared_curve(s, -1);
 508         for (i = 0; i < ncurves; i++)
 509                 {
 510                 if (i)
 511                         BIO_puts(out, ":");
 512                 nid = SSL_get_shared_curve(s, i);
 513                 cname = EC_curve_nid2nist(nid);
 514                 if (!cname)
 515                         cname = OBJ_nid2sn(nid);
 516                 BIO_printf(out, "%s", cname);
 517                 }
 518         if (ncurves == 0)
 519                 BIO_puts(out, "NONE");
 520         BIO_puts(out, "\n");
 521         return 1;
 522         }
 523 #endif
 524 int ssl_print_tmp_key(BIO *out, SSL *s)
 525         {
 526         EVP_PKEY *key;
 527         if (!SSL_get_server_tmp_key(s, &key))
 528                 return 1;
 529         BIO_puts(out, "Server Temp Key: ");
 530         switch (EVP_PKEY_id(key))
 531                 {
 532         case EVP_PKEY_RSA:
 533                 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
 534                 break;
 535
 536         case EVP_PKEY_DH:
 537                 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
 538                 break;
 539 #ifndef OPENSSL_NO_ECDH
 540         case EVP_PKEY_EC:
 541                         {
 542                         EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
 543                         int nid;
 544                         const char *cname;
 545                         nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
 546                         EC_KEY_free(ec);
 547                         cname = EC_curve_nid2nist(nid);
 548                         if (!cname)
 549                                 cname = OBJ_nid2sn(nid);
 550                         BIO_printf(out, "ECDH, %s, %d bits\n",
 551                                                 cname, EVP_PKEY_bits(key));
 552                         }
 553 #endif
 554                 }
 555         EVP_PKEY_free(key);
 556         return 1;
 557         }
 558
 559
 560 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 561                                    int argi, long argl, long ret)
 562         {
 563         BIO *out;
 564
 565         out=(BIO *)BIO_get_callback_arg(bio);
 566         if (out == NULL) return(ret);
 567
 568         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 569                 {
 570                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 571                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 572                 BIO_dump(out,argp,(int)ret);
 573                 return(ret);
 574                 }
 575         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 576                 {
 577                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 578                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 579                 BIO_dump(out,argp,(int)ret);
 580                 }
 581         return(ret);
 582         }
 583
 584 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 585         {
 586         const char *str;
 587         int w;
 588
 589         w=where& ~SSL_ST_MASK;
 590
 591         if (w & SSL_ST_CONNECT) str="SSL_connect";
 592         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 593         else str="undefined";
 594
 595         if (where & SSL_CB_LOOP)
 596                 {
 597                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 598                 }
 599         else if (where & SSL_CB_ALERT)
 600                 {
 601                 str=(where & SSL_CB_READ)?"read":"write";
 602                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 603                         str,
 604                         SSL_alert_type_string_long(ret),
 605                         SSL_alert_desc_string_long(ret));
 606                 }
 607         else if (where & SSL_CB_EXIT)
 608                 {
 609                 if (ret == 0)
 610                         BIO_printf(bio_err,"%s:failed in %s\n",
 611                                 str,SSL_state_string_long(s));
 612                 else if (ret < 0)
 613                         {
 614                         BIO_printf(bio_err,"%s:error in %s\n",
 615                                 str,SSL_state_string_long(s));
 616                         }
 617                 }
 618         }
 619
 620 static const char *ssl_version_str(int version)
 621         {
 622         switch (version)
 623                 {
 624         case SSL2_VERSION:
 625                 return "SSL 2.0";
 626         case SSL3_VERSION:
 627                 return "SSL 3.0";
 628         case TLS1_VERSION:
 629                 return "TLS 1.0";
 630         case TLS1_1_VERSION:
 631                 return "TLS 1.1";
 632         case TLS1_2_VERSION:
 633                 return "TLS 1.2";
 634         case DTLS1_VERSION:
 635                 return "DTLS 1.0";
 636         case DTLS1_BAD_VER:
 637                 return "DTLS 1.0 (bad)";
 638         default:
 639                 return "???";
 640                 }
 641         }
 642
 643 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 644         {
 645         BIO *bio = arg;
 646         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 647
 648         str_write_p = write_p ? ">>>" : "<<<";
 649
 650         str_version = ssl_version_str(version);
 651
 652         if (version == SSL2_VERSION)
 653                 {
 654                 str_details1 = "???";
 655
 656                 if (len > 0)
 657                         {
 658                         switch (((const unsigned char*)buf)[0])
 659                                 {
 660                                 case 0:
 661                                         str_details1 = ", ERROR:";
 662                                         str_details2 = " ???";
 663                                         if (len >= 3)
 664                                                 {
 665                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 666
 667                                                 switch (err)
 668                                                         {
 669                                                 case 0x0001:
 670                                                         str_details2 = " NO-CIPHER-ERROR";
 671                                                         break;
 672                                                 case 0x0002:
 673                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 674                                                         break;
 675                                                 case 0x0004:
 676                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 677                                                         break;
 678                                                 case 0x0006:
 679                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 680                                                         break;
 681                                                         }
 682                                                 }
 683
 684                                         break;
 685                                 case 1:
 686                                         str_details1 = ", CLIENT-HELLO";
 687                                         break;
 688                                 case 2:
 689                                         str_details1 = ", CLIENT-MASTER-KEY";
 690                                         break;
 691                                 case 3:
 692                                         str_details1 = ", CLIENT-FINISHED";
 693                                         break;
 694                                 case 4:
 695                                         str_details1 = ", SERVER-HELLO";
 696                                         break;
 697                                 case 5:
 698                                         str_details1 = ", SERVER-VERIFY";
 699                                         break;
 700                                 case 6:
 701                                         str_details1 = ", SERVER-FINISHED";
 702                                         break;
 703                                 case 7:
 704                                         str_details1 = ", REQUEST-CERTIFICATE";
 705                                         break;
 706                                 case 8:
 707                                         str_details1 = ", CLIENT-CERTIFICATE";
 708                                         break;
 709                                 }
 710                         }
 711                 }
 712
 713         if (version == SSL3_VERSION ||
 714             version == TLS1_VERSION ||
 715             version == TLS1_1_VERSION ||
 716             version == TLS1_2_VERSION ||
 717             version == DTLS1_VERSION ||
 718             version == DTLS1_BAD_VER)
 719                 {
 720                 switch (content_type)
 721                         {
 722                 case 20:
 723                         str_content_type = "ChangeCipherSpec";
 724                         break;
 725                 case 21:
 726                         str_content_type = "Alert";
 727                         break;
 728                 case 22:
 729                         str_content_type = "Handshake";
 730                         break;
 731                         }
 732
 733                 if (content_type == 21) /* Alert */
 734                         {
 735                         str_details1 = ", ???";
 736
 737                         if (len == 2)
 738                                 {
 739                                 switch (((const unsigned char*)buf)[0])
 740                                         {
 741                                 case 1:
 742                                         str_details1 = ", warning";
 743                                         break;
 744                                 case 2:
 745                                         str_details1 = ", fatal";
 746                                         break;
 747                                         }
 748
 749                                 str_details2 = " ???";
 750                                 switch (((const unsigned char*)buf)[1])
 751                                         {
 752                                 case 0:
 753                                         str_details2 = " close_notify";
 754                                         break;
 755                                 case 10:
 756                                         str_details2 = " unexpected_message";
 757                                         break;
 758                                 case 20:
 759                                         str_details2 = " bad_record_mac";
 760                                         break;
 761                                 case 21:
 762                                         str_details2 = " decryption_failed";
 763                                         break;
 764                                 case 22:
 765                                         str_details2 = " record_overflow";
 766                                         break;
 767                                 case 30:
 768                                         str_details2 = " decompression_failure";
 769                                         break;
 770                                 case 40:
 771                                         str_details2 = " handshake_failure";
 772                                         break;
 773                                 case 42:
 774                                         str_details2 = " bad_certificate";
 775                                         break;
 776                                 case 43:
 777                                         str_details2 = " unsupported_certificate";
 778                                         break;
 779                                 case 44:
 780                                         str_details2 = " certificate_revoked";
 781                                         break;
 782                                 case 45:
 783                                         str_details2 = " certificate_expired";
 784                                         break;
 785                                 case 46:
 786                                         str_details2 = " certificate_unknown";
 787                                         break;
 788                                 case 47:
 789                                         str_details2 = " illegal_parameter";
 790                                         break;
 791                                 case 48:
 792                                         str_details2 = " unknown_ca";
 793                                         break;
 794                                 case 49:
 795                                         str_details2 = " access_denied";
 796                                         break;
 797                                 case 50:
 798                                         str_details2 = " decode_error";
 799                                         break;
 800                                 case 51:
 801                                         str_details2 = " decrypt_error";
 802                                         break;
 803                                 case 60:
 804                                         str_details2 = " export_restriction";
 805                                         break;
 806                                 case 70:
 807                                         str_details2 = " protocol_version";
 808                                         break;
 809                                 case 71:
 810                                         str_details2 = " insufficient_security";
 811                                         break;
 812                                 case 80:
 813                                         str_details2 = " internal_error";
 814                                         break;
 815                                 case 90:
 816                                         str_details2 = " user_canceled";
 817                                         break;
 818                                 case 100:
 819                                         str_details2 = " no_renegotiation";
 820                                         break;
 821                                 case 110:
 822                                         str_details2 = " unsupported_extension";
 823                                         break;
 824                                 case 111:
 825                                         str_details2 = " certificate_unobtainable";
 826                                         break;
 827                                 case 112:
 828                                         str_details2 = " unrecognized_name";
 829                                         break;
 830                                 case 113:
 831                                         str_details2 = " bad_certificate_status_response";
 832                                         break;
 833                                 case 114:
 834                                         str_details2 = " bad_certificate_hash_value";
 835                                         break;
 836                                 case 115:
 837                                         str_details2 = " unknown_psk_identity";
 838                                         break;
 839                                         }
 840                                 }
 841                         }
 842
 843                 if (content_type == 22) /* Handshake */
 844                         {
 845                         str_details1 = "???";
 846
 847                         if (len > 0)
 848                                 {
 849                                 switch (((const unsigned char*)buf)[0])
 850                                         {
 851                                 case 0:
 852                                         str_details1 = ", HelloRequest";
 853                                         break;
 854                                 case 1:
 855                                         str_details1 = ", ClientHello";
 856                                         break;
 857                                 case 2:
 858                                         str_details1 = ", ServerHello";
 859                                         break;
 860                                 case 3:
 861                                         str_details1 = ", HelloVerifyRequest";
 862                                         break;
 863                                 case 11:
 864                                         str_details1 = ", Certificate";
 865                                         break;
 866                                 case 12:
 867                                         str_details1 = ", ServerKeyExchange";
 868                                         break;
 869                                 case 13:
 870                                         str_details1 = ", CertificateRequest";
 871                                         break;
 872                                 case 14:
 873                                         str_details1 = ", ServerHelloDone";
 874                                         break;
 875                                 case 15:
 876                                         str_details1 = ", CertificateVerify";
 877                                         break;
 878                                 case 16:
 879                                         str_details1 = ", ClientKeyExchange";
 880                                         break;
 881                                 case 20:
 882                                         str_details1 = ", Finished";
 883                                         break;
 884                                         }
 885                                 }
 886                         }
 887
 888 #ifndef OPENSSL_NO_HEARTBEATS
 889                 if (content_type == 24) /* Heartbeat */
 890                         {
 891                         str_details1 = ", Heartbeat";
 892
 893                         if (len > 0)
 894                                 {
 895                                 switch (((const unsigned char*)buf)[0])
 896                                         {
 897                                 case 1:
 898                                         str_details1 = ", HeartbeatRequest";
 899                                         break;
 900                                 case 2:
 901                                         str_details1 = ", HeartbeatResponse";
 902                                         break;
 903                                         }
 904                                 }
 905                         }
 906 #endif
 907                 }
 908
 909         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);
 910
 911         if (len > 0)
 912                 {
 913                 size_t num, i;
 914
 915                 BIO_printf(bio, "   ");
 916                 num = len;
 917 #if 0
 918                 if (num > 16)
 919                         num = 16;
 920 #endif
 921                 for (i = 0; i < num; i++)
 922                         {
 923                         if (i % 16 == 0 && i > 0)
 924                                 BIO_printf(bio, "\n   ");
 925                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 926                         }
 927                 if (i < len)
 928                         BIO_printf(bio, " ...");
 929                 BIO_printf(bio, "\n");
 930                 }
 931         (void)BIO_flush(bio);
 932         }
 933
 934 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 935                                         unsigned char *data, int len,
 936                                         void *arg)
 937         {
 938         BIO *bio = arg;
 939         char *extname;
 940
 941         switch(type)
 942                 {
 943                 case TLSEXT_TYPE_server_name:
 944                 extname = "server name";
 945                 break;
 946
 947                 case TLSEXT_TYPE_max_fragment_length:
 948                 extname = "max fragment length";
 949                 break;
 950
 951                 case TLSEXT_TYPE_client_certificate_url:
 952                 extname = "client certificate URL";
 953                 break;
 954
 955                 case TLSEXT_TYPE_trusted_ca_keys:
 956                 extname = "trusted CA keys";
 957                 break;
 958
 959                 case TLSEXT_TYPE_truncated_hmac:
 960                 extname = "truncated HMAC";
 961                 break;
 962
 963                 case TLSEXT_TYPE_status_request:
 964                 extname = "status request";
 965                 break;
 966
 967                 case TLSEXT_TYPE_user_mapping:
 968                 extname = "user mapping";
 969                 break;
 970
 971                 case TLSEXT_TYPE_client_authz:
 972                 extname = "client authz";
 973                 break;
 974
 975                 case TLSEXT_TYPE_server_authz:
 976                 extname = "server authz";
 977                 break;
 978
 979                 case TLSEXT_TYPE_cert_type:
 980                 extname = "cert type";
 981                 break;
 982
 983                 case TLSEXT_TYPE_elliptic_curves:
 984                 extname = "elliptic curves";
 985                 break;
 986
 987                 case TLSEXT_TYPE_ec_point_formats:
 988                 extname = "EC point formats";
 989                 break;
 990
 991                 case TLSEXT_TYPE_srp:
 992                 extname = "SRP";
 993                 break;
 994
 995                 case TLSEXT_TYPE_signature_algorithms:
 996                 extname = "signature algorithms";
 997                 break;
 998
 999                 case TLSEXT_TYPE_use_srtp:
1000                 extname = "use SRTP";
1001                 break;
1002
1003                 case TLSEXT_TYPE_heartbeat:
1004                 extname = "heartbeat";
1005                 break;
1006
1007                 case TLSEXT_TYPE_session_ticket:
1008                 extname = "session ticket";
1009                 break;
1010
1011                 case TLSEXT_TYPE_renegotiate:
1012                 extname = "renegotiation info";
1013                 break;
1014
1015 #ifdef TLSEXT_TYPE_opaque_prf_input
1016                 case TLSEXT_TYPE_opaque_prf_input:
1017                 extname = "opaque PRF input";
1018                 break;
1019 #endif
1020 #ifdef TLSEXT_TYPE_next_proto_neg
1021                 case TLSEXT_TYPE_next_proto_neg:
1022                 extname = "next protocol";
1023                 break;
1024 #endif
1025 #ifdef TLSEXT_TYPE_encrypt_then_mac
1026                 case TLSEXT_TYPE_encrypt_then_mac:
1027                 extname = "encrypt-then-mac";
1028                 break;
1029 #endif
1030                 case TLSEXT_TYPE_padding:
1031                 extname = "TLS padding";
1032                 break;
1033
1034                 default:
1035                 extname = "unknown";
1036                 break;
1037
1038                 }
1039
1040         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1041                         client_server ? "server": "client",
1042                         extname, type, len);
1043         BIO_dump(bio, (char *)data, len);
1044         (void)BIO_flush(bio);
1045         }
1046
1047 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1048         {
1049         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1050         unsigned int length, resultlength;
1051         union {
1052                 struct sockaddr sa;
1053                 struct sockaddr_in s4;
1054 #if OPENSSL_USE_IPV6
1055                 struct sockaddr_in6 s6;
1056 #endif
1057         } peer;
1058
1059         /* Initialize a random secret */
1060         if (!cookie_initialized)
1061                 {
1062                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1063                         {
1064                         BIO_printf(bio_err,"error setting random cookie secret\n");
1065                         return 0;
1066                         }
1067                 cookie_initialized = 1;
1068                 }
1069
1070         /* Read peer information */
1071         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1072
1073         /* Create buffer with peer's address and port */
1074         length = 0;
1075         switch (peer.sa.sa_family)
1076                 {
1077         case AF_INET:
1078                 length += sizeof(struct in_addr);
1079                 length += sizeof(peer.s4.sin_port);
1080                 break;
1081 #if OPENSSL_USE_IPV6
1082         case AF_INET6:
1083                 length += sizeof(struct in6_addr);
1084                 length += sizeof(peer.s6.sin6_port);
1085                 break;
1086 #endif
1087         default:
1088                 OPENSSL_assert(0);
1089                 break;
1090                 }
1091         buffer = OPENSSL_malloc(length);
1092
1093         if (buffer == NULL)
1094                 {
1095                 BIO_printf(bio_err,"out of memory\n");
1096                 return 0;
1097                 }
1098
1099         switch (peer.sa.sa_family)
1100                 {
1101         case AF_INET:
1102                 memcpy(buffer,
1103                        &peer.s4.sin_port,
1104                        sizeof(peer.s4.sin_port));
1105                 memcpy(buffer + sizeof(peer.s4.sin_port),
1106                        &peer.s4.sin_addr,
1107                        sizeof(struct in_addr));
1108                 break;
1109 #if OPENSSL_USE_IPV6
1110         case AF_INET6:
1111                 memcpy(buffer,
1112                        &peer.s6.sin6_port,
1113                        sizeof(peer.s6.sin6_port));
1114                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1115                        &peer.s6.sin6_addr,
1116                        sizeof(struct in6_addr));
1117                 break;
1118 #endif
1119         default:
1120                 OPENSSL_assert(0);
1121                 break;
1122                 }
1123
1124         /* Calculate HMAC of buffer using the secret */
1125         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1126              buffer, length, result, &resultlength);
1127         OPENSSL_free(buffer);
1128
1129         memcpy(cookie, result, resultlength);
1130         *cookie_len = resultlength;
1131
1132         return 1;
1133         }
1134
1135 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1136         {
1137         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1138         unsigned int length, resultlength;
1139         union {
1140                 struct sockaddr sa;
1141                 struct sockaddr_in s4;
1142 #if OPENSSL_USE_IPV6
1143                 struct sockaddr_in6 s6;
1144 #endif
1145         } peer;
1146
1147         /* If secret isn't initialized yet, the cookie can't be valid */
1148         if (!cookie_initialized)
1149                 return 0;
1150
1151         /* Read peer information */
1152         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1153
1154         /* Create buffer with peer's address and port */
1155         length = 0;
1156         switch (peer.sa.sa_family)
1157                 {
1158         case AF_INET:
1159                 length += sizeof(struct in_addr);
1160                 length += sizeof(peer.s4.sin_port);
1161                 break;
1162 #if OPENSSL_USE_IPV6
1163         case AF_INET6:
1164                 length += sizeof(struct in6_addr);
1165                 length += sizeof(peer.s6.sin6_port);
1166                 break;
1167 #endif
1168         default:
1169                 OPENSSL_assert(0);
1170                 break;
1171                 }
1172         buffer = OPENSSL_malloc(length);
1173
1174         if (buffer == NULL)
1175                 {
1176                 BIO_printf(bio_err,"out of memory\n");
1177                 return 0;
1178                 }
1179
1180         switch (peer.sa.sa_family)
1181                 {
1182         case AF_INET:
1183                 memcpy(buffer,
1184                        &peer.s4.sin_port,
1185                        sizeof(peer.s4.sin_port));
1186                 memcpy(buffer + sizeof(peer.s4.sin_port),
1187                        &peer.s4.sin_addr,
1188                        sizeof(struct in_addr));
1189                 break;
1190 #if OPENSSL_USE_IPV6
1191         case AF_INET6:
1192                 memcpy(buffer,
1193                        &peer.s6.sin6_port,
1194                        sizeof(peer.s6.sin6_port));
1195                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1196                        &peer.s6.sin6_addr,
1197                        sizeof(struct in6_addr));
1198                 break;
1199 #endif
1200         default:
1201                 OPENSSL_assert(0);
1202                 break;
1203                 }
1204
1205         /* Calculate HMAC of buffer using the secret */
1206         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1207              buffer, length, result, &resultlength);
1208         OPENSSL_free(buffer);
1209
1210         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1211                 return 1;
1212
1213         return 0;
1214         }
1215
1216 /* Example of extended certificate handling. Where the standard support
1217  * of one certificate per algorithm is not sufficient an application
1218  * can decide which certificate(s) to use at runtime based on whatever
1219  * criteria it deems appropriate.
1220  */
1221
1222 /* Linked list of certificates, keys and chains */
1223 struct  ssl_excert_st
1224         {
1225         int certform;
1226         const char *certfile;
1227         int keyform;
1228         const char *keyfile;
1229         const char *chainfile;
1230         X509 *cert;
1231         EVP_PKEY *key;
1232         STACK_OF(X509) *chain;
1233         int build_chain;
1234         struct ssl_excert_st *next, *prev;
1235         };
1236
1237 struct chain_flags
1238         {
1239         int flag;
1240         const char *name;
1241         };
1242
1243 struct chain_flags chain_flags_list[] =
1244         {
1245                 {CERT_PKEY_VALID, "Overall Validity"},
1246                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1247                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1248                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1249                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1250                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1251                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1252                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1253                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1254                 {0, NULL}
1255         };
1256
1257
1258 static void print_chain_flags(BIO *out, SSL *s, int flags)
1259         {
1260         struct chain_flags *ctmp = chain_flags_list;
1261         while(ctmp->name)
1262                 {
1263                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1264                                 flags & ctmp->flag ? "OK" : "NOT OK");
1265                 ctmp++;
1266                 }
1267         BIO_printf(out, "\tSuite B: ");
1268         if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
1269                 BIO_puts(out, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
1270         else
1271                 BIO_printf(out, "not tested\n");
1272         }
1273
1274 /* Very basic selection callback: just use any certificate chain
1275  * reported as valid. More sophisticated could prioritise according
1276  * to local policy.
1277  */
1278 static int set_cert_cb(SSL *ssl, void *arg)
1279         {
1280         int i, rv;
1281         SSL_EXCERT *exc = arg;
1282 #ifdef CERT_CB_TEST_RETRY
1283         static int retry_cnt;
1284         if (retry_cnt < 5)
1285                 {
1286                 retry_cnt++;
1287                 fprintf(stderr, "Certificate callback retry test: count %d\n",
1288                                                                 retry_cnt);
1289                 return -1;
1290                 }
1291 #endif
1292         SSL_certs_clear(ssl);
1293
1294         if (!exc)
1295                 return 1;
1296
1297         /* Go to end of list and traverse backwards since we prepend
1298          * newer entries this retains the original order.
1299          */
1300         while (exc->next)
1301                 exc = exc->next;
1302
1303         i = 0;
1304
1305         while(exc)
1306                 {
1307                 i++;
1308                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1309                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1310                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1311                                                         XN_FLAG_ONELINE);
1312                 BIO_puts(bio_err, "\n");
1313
1314                 print_chain_flags(bio_err, ssl, rv);
1315                 if (rv & CERT_PKEY_VALID)
1316                         {
1317                         SSL_use_certificate(ssl, exc->cert);
1318                         SSL_use_PrivateKey(ssl, exc->key);
1319                         /* NB: we wouldn't normally do this as it is
1320                          * not efficient building chains on each connection
1321                          * better to cache the chain in advance.
1322                          */
1323                         if (exc->build_chain)
1324                                 {
1325                                 if (!SSL_build_cert_chain(ssl, 0))
1326                                         return 0;
1327                                 }
1328                         else if (exc->chain)
1329                                 SSL_set1_chain(ssl, exc->chain);
1330                         }
1331                 exc = exc->prev;
1332                 }
1333         return 1;
1334         }
1335
1336 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1337         {
1338         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1339         }
1340
1341 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1342         {
1343         SSL_EXCERT *exc;
1344         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1345         if (!exc)
1346                 return 0;
1347         exc->certfile = NULL;
1348         exc->keyfile = NULL;
1349         exc->chainfile = NULL;
1350         exc->cert = NULL;
1351         exc->key = NULL;
1352         exc->chain = NULL;
1353         exc->prev = NULL;
1354         exc->build_chain = 0;
1355
1356         exc->next = *pexc;
1357         *pexc = exc;
1358
1359         if (exc->next)
1360                 {
1361                 exc->certform = exc->next->certform;
1362                 exc->keyform = exc->next->keyform;
1363                 exc->next->prev = exc;
1364                 }
1365         else
1366                 {
1367                 exc->certform = FORMAT_PEM;
1368                 exc->keyform = FORMAT_PEM;
1369                 }
1370         return 1;
1371
1372         }
1373
1374 void ssl_excert_free(SSL_EXCERT *exc)
1375         {
1376         SSL_EXCERT *curr;
1377         while (exc)
1378                 {
1379                 if (exc->cert)
1380                         X509_free(exc->cert);
1381                 if (exc->key)
1382                         EVP_PKEY_free(exc->key);
1383                 if (exc->chain)
1384                         sk_X509_pop_free(exc->chain, X509_free);
1385                 curr = exc;
1386                 exc = exc->next;
1387                 OPENSSL_free(curr);
1388                 }
1389         }
1390
1391 int load_excert(SSL_EXCERT **pexc, BIO *err)
1392         {
1393         SSL_EXCERT *exc = *pexc;
1394         if (!exc)
1395                 return 1;
1396         /* If nothing in list, free and set to NULL */
1397         if (!exc->certfile && !exc->next)
1398                 {
1399                 ssl_excert_free(exc);
1400                 *pexc = NULL;
1401                 return 1;
1402                 }
1403         for(; exc; exc=exc->next)
1404                 {
1405                 if (!exc->certfile)
1406                         {
1407                         BIO_printf(err, "Missing filename\n");
1408                         return 0;
1409                         }
1410                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1411                                         NULL, NULL, "Server Certificate");
1412                 if (!exc->cert)
1413                         return 0;
1414                 if (exc->keyfile)
1415                         {
1416                         exc->key = load_key(err, exc->keyfile, exc->keyform,
1417                                             0, NULL, NULL, "Server Key");
1418                         }
1419                 else
1420                         {
1421                         exc->key = load_key(err, exc->certfile, exc->certform,
1422                                             0, NULL, NULL, "Server Key");
1423                         }
1424                 if (!exc->key)
1425                         return 0;
1426                 if (exc->chainfile)
1427                         {
1428                         exc->chain = load_certs(err,
1429                                                 exc->chainfile, FORMAT_PEM,
1430                                                 NULL, NULL,
1431                                                 "Server Chain");
1432                         if (!exc->chain)
1433                                 return 0;
1434                         }
1435                 }
1436         return 1;
1437         }
1438
1439
1440 int args_excert(char ***pargs, int *pargc,
1441                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1442         {
1443         char *arg = **pargs, *argn = (*pargs)[1];
1444         SSL_EXCERT *exc = *pexc;
1445         int narg = 2;
1446         if (!exc)
1447                 {
1448                 if (ssl_excert_prepend(&exc))
1449                         *pexc = exc;
1450                 else
1451                         {
1452                         BIO_printf(err, "Error initialising xcert\n");
1453                         *badarg = 1;
1454                         goto err;
1455                         }
1456                 }
1457         if (strcmp(arg, "-xcert") == 0)
1458                 {
1459                 if (!argn)
1460                         {
1461                         *badarg = 1;
1462                         return 1;
1463                         }
1464                 if (exc->certfile && !ssl_excert_prepend(&exc))
1465                         {
1466                         BIO_printf(err, "Error adding xcert\n");
1467                         *badarg = 1;
1468                         goto err;
1469                         }
1470                 exc->certfile = argn;
1471                 }
1472         else if (strcmp(arg,"-xkey") == 0)
1473                 {
1474                 if (!argn)
1475                         {
1476                         *badarg = 1;
1477                         return 1;
1478                         }
1479                 if (exc->keyfile)
1480                         {
1481                         BIO_printf(err, "Key already specified\n");
1482                         *badarg = 1;
1483                         return 1;
1484                         }
1485                 exc->keyfile = argn;
1486                 }
1487         else if (strcmp(arg,"-xchain") == 0)
1488                 {
1489                 if (!argn)
1490                         {
1491                         *badarg = 1;
1492                         return 1;
1493                         }
1494                 if (exc->chainfile)
1495                         {
1496                         BIO_printf(err, "Chain already specified\n");
1497                         *badarg = 1;
1498                         return 1;
1499                         }
1500                 exc->chainfile = argn;
1501                 }
1502         else if (strcmp(arg,"-xchain_build") == 0)
1503                 {
1504                 narg = 1;
1505                 exc->build_chain = 1;
1506                 }
1507         else if (strcmp(arg,"-xcertform") == 0)
1508                 {
1509                 if (!argn)
1510                         {
1511                         *badarg = 1;
1512                         goto err;
1513                         }
1514                 exc->certform = str2fmt(argn);
1515                 }
1516         else if (strcmp(arg,"-xkeyform") == 0)
1517                 {
1518                 if (!argn)
1519                         {
1520                         *badarg = 1;
1521                         goto err;
1522                         }
1523                 exc->keyform = str2fmt(argn);
1524                 }
1525         else
1526                 return 0;
1527
1528         (*pargs) += narg;
1529
1530         if (pargc)
1531                 *pargc -= narg;
1532
1533         *pexc = exc;
1534
1535         return 1;
1536
1537         err:
1538         ERR_print_errors(err);
1539         ssl_excert_free(exc);
1540         *pexc = NULL;
1541         return 1;
1542         }
1543
1544 static void print_raw_cipherlist(BIO *bio, SSL *s)
1545         {
1546         const unsigned char *rlist;
1547         static const unsigned char scsv_id[] = {0, 0, 0xFF};
1548         size_t i, rlistlen, num;
1549         if (!SSL_is_server(s))
1550                 return;
1551         num = SSL_get0_raw_cipherlist(s, NULL);
1552         rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1553         BIO_puts(bio, "Client cipher list: ");
1554         for (i = 0; i < rlistlen; i += num, rlist += num)
1555                 {
1556                 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1557                 if (i)
1558                         BIO_puts(bio, ":");
1559                 if (c)
1560                         BIO_puts(bio, SSL_CIPHER_get_name(c));
1561                 else if (!memcmp(rlist, scsv_id - num + 3, num))
1562                         BIO_puts(bio, "SCSV");
1563                 else
1564                         {
1565                         size_t j;
1566                         BIO_puts(bio, "0x");
1567                         for (j = 0; j < num; j++)
1568                                 BIO_printf(bio, "%02X", rlist[j]);
1569                         }
1570                 }
1571         BIO_puts(bio, "\n");
1572         }
1573
1574
1575 void print_ssl_summary(BIO *bio, SSL *s)
1576         {
1577         const SSL_CIPHER *c;
1578         X509 *peer;
1579         /*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
1580         BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
1581         print_raw_cipherlist(bio, s);
1582         c = SSL_get_current_cipher(s);
1583         BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1584         do_print_sigalgs(bio, s, 0);
1585         peer = SSL_get_peer_certificate(s);
1586         if (peer)
1587                 {
1588                 int nid;
1589                 BIO_puts(bio, "Peer certificate: ");
1590                 X509_NAME_print_ex(bio, X509_get_subject_name(peer),
1591                                         0, XN_FLAG_ONELINE);
1592                 BIO_puts(bio, "\n");
1593                 if (SSL_get_peer_signature_nid(s, &nid))
1594                         BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
1595                 }
1596         else
1597                 BIO_puts(bio, "No peer certificate\n");
1598         if (peer)
1599                 X509_free(peer);
1600 #ifndef OPENSSL_NO_EC
1601         ssl_print_point_formats(bio, s);
1602         if (SSL_is_server(s))
1603                 ssl_print_curves(bio, s, 1);
1604         else
1605                 ssl_print_tmp_key(bio, s);
1606 #else
1607         if (!SSL_is_server(s))
1608                 ssl_print_tmp_key(bio, s);
1609 #endif
1610         }
1611
1612 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1613                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1614         {
1615         char *arg = **pargs, *argn = (*pargs)[1];
1616         int rv;
1617
1618         /* Attempt to run SSL configuration command */
1619         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1620         /* If parameter not recognised just return */
1621         if (rv == 0)
1622                 return 0;
1623         /* see if missing argument error */
1624         if (rv == -3)
1625                 {
1626                 BIO_printf(err, "%s needs an argument\n", arg);
1627                 *badarg = 1;
1628                 goto end;
1629                 }
1630         /* Check for some other error */
1631         if (rv < 0)
1632                 {
1633                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1634                                                 arg, argn ? argn : "");
1635                 *badarg = 1;
1636                 goto end;
1637                 }
1638         /* Store command and argument */
1639         /* If only one argument processed store value as NULL */
1640         if (rv == 1)
1641                 argn = NULL;
1642         if (!*pstr)
1643                 *pstr = sk_OPENSSL_STRING_new_null();
1644         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1645                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1646                 {
1647                 BIO_puts(err, "Memory allocation failure\n");
1648                 goto end;
1649                 }
1650
1651         end:
1652         if (*badarg)
1653                 ERR_print_errors(err);
1654
1655         return 1;
1656         }
1657
1658 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1659                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1660         {
1661         int i;
1662         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1663         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1664                 {
1665                 const char *param = sk_OPENSSL_STRING_value(str, i);
1666                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1667                 /* If no_ecdhe or named curve already specified don't need
1668                  * a default.
1669                  */
1670                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1671                         no_ecdhe = 1;
1672 #ifndef OPENSSL_NO_JPAKE
1673                 if (!no_jpake && !strcmp(param, "-cipher"))
1674                         {
1675                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1676                         return 0;
1677                         }
1678 #endif
1679                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1680                         {
1681                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1682                                                 param, value ? value : "");
1683                         ERR_print_errors(err);
1684                         return 0;
1685                         }
1686                 }
1687         /* This is a special case to keep existing s_server functionality:
1688          * if we don't have any curve specified *and* we haven't disabled
1689          * ECDHE then use P-256.
1690          */
1691         if (!no_ecdhe)
1692                 {
1693                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1694                         {
1695                         BIO_puts(err, "Error setting EC curve\n");
1696                         ERR_print_errors(err);
1697                         return 0;
1698                         }
1699                 }
1700 #ifndef OPENSSL_NO_JPAKE
1701         if (!no_jpake)
1702                 {
1703                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1704                         {
1705                         BIO_puts(err, "Error setting cipher to PSK\n");
1706                         ERR_print_errors(err);
1707                         return 0;
1708                         }
1709                 }
1710 #endif
1711         if (!SSL_CONF_CTX_finish(cctx))
1712                 {
1713                 BIO_puts(err, "Error finishing context\n");
1714                 ERR_print_errors(err);
1715                 return 0;
1716                 }
1717         return 1;
1718         }
1719
1720 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1721         {
1722         X509_CRL *crl;
1723         int i;
1724         for (i = 0; i < sk_X509_CRL_num(crls); i++)
1725                 {
1726                 crl = sk_X509_CRL_value(crls, i);
1727                 X509_STORE_add_crl(st, crl);
1728                 }
1729         return 1;
1730         }
1731
1732 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1733         {
1734         X509_STORE *st;
1735         st = SSL_CTX_get_cert_store(ctx);
1736         add_crls_store(st, crls);
1737         if (crl_download)
1738                 store_setup_crl_download(st);
1739         return 1;
1740         }
1741
1742 int ssl_load_stores(SSL_CTX *ctx,
1743                         const char *vfyCApath, const char *vfyCAfile,
1744                         const char *chCApath, const char *chCAfile,
1745                         STACK_OF(X509_CRL) *crls, int crl_download)
1746         {
1747         X509_STORE *vfy = NULL, *ch = NULL;
1748         int rv = 0;
1749         if (vfyCApath || vfyCAfile)
1750                 {
1751                 vfy = X509_STORE_new();
1752                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1753                         goto err;
1754                 add_crls_store(vfy, crls);
1755                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1756                 if (crl_download)
1757                         store_setup_crl_download(vfy);
1758                 }
1759         if (chCApath || chCAfile)
1760                 {
1761                 ch = X509_STORE_new();
1762                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1763                         goto err;
1764                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1765                 }
1766         rv = 1;
1767         err:
1768         if (vfy)
1769                 X509_STORE_free(vfy);
1770         if (ch)
1771                 X509_STORE_free(ch);
1772         return rv;
1773         }
1774
1775 /* Verbose print out of security callback */
1776
1777 typedef struct
1778         {
1779         BIO *out;
1780         int verbose;
1781         int (*old_cb)(SSL *s, SSL_CTX *ctx, int op, int bits, int nid,
1782                                 void *other, void *ex);
1783         } security_debug_ex;
1784
1785 static int security_callback_debug(SSL *s, SSL_CTX *ctx,
1786                                 int op, int bits, int nid,
1787                                 void *other, void *ex)
1788         {
1789         security_debug_ex *sdb = ex;
1790         int rv, show_bits = 1, cert_md = 0;
1791         const char *nm;
1792         rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1793         if (rv == 1 && sdb->verbose < 2)
1794                 return 1;
1795         BIO_puts(sdb->out, "Security callback: ");
1796
1797         switch (op)
1798                 {
1799         case SSL_SECOP_CIPHER_SUPPORTED:
1800                 nm = "Supported Ciphersuite";
1801                 break;
1802         case SSL_SECOP_CIPHER_SHARED:
1803                 nm = "Shared Ciphersuite";
1804                 break;
1805         case SSL_SECOP_CIPHER_CHECK:
1806                 nm = "Check Ciphersuite";
1807                 break;
1808         case SSL_SECOP_TICKET:
1809                 BIO_puts(sdb->out, "Session ticket");
1810                 show_bits = 0;
1811                 nm = NULL;
1812                 break;
1813         case SSL_SECOP_COMPRESSION:
1814                 BIO_puts(sdb->out, "SSL compression");
1815                 show_bits = 0;
1816                 nm = NULL;
1817                 break;
1818 #ifndef OPENSSL_NO_DH
1819         case SSL_SECOP_TMP_DH:
1820                 nm = "Temp DH key bits";
1821                 break;
1822 #endif
1823         case SSL_SECOP_CURVE_SUPPORTED:
1824                 nm = "Supported Curve";
1825                 break;
1826         case SSL_SECOP_CURVE_SHARED:
1827                 nm = "Shared Curve";
1828                 break;
1829         case SSL_SECOP_CURVE_CHECK:
1830                 nm = "Check Curve";
1831                 break;
1832         case SSL_SECOP_SSL2_COMPAT:
1833                 BIO_puts(sdb->out, "SSLv2 compatible");
1834                 show_bits = 0;
1835                 nm = NULL;
1836                 break;
1837         case SSL_SECOP_VERSION:
1838                 BIO_printf(sdb->out, "Version=%s", ssl_version_str(nid));
1839                 show_bits = 0;
1840                 nm = NULL;
1841                 break;
1842         case SSL_SECOP_SIGALG_SUPPORTED:
1843                 nm = "Supported Signature Algorithm digest";
1844                 break;
1845         case SSL_SECOP_SIGALG_SHARED:
1846                 nm = "Shared Signature Algorithm digest";
1847                 break;
1848         case SSL_SECOP_SIGALG_CHECK:
1849                 nm = "Check Signature Algorithm digest";
1850                 break;
1851         case SSL_SECOP_SIGALG_MASK:
1852                 nm = "Signature Algorithm mask";
1853                 break;
1854         case SSL_SECOP_EE_KEY:
1855                 nm = "Certificate chain EE key";
1856                 break;
1857         case SSL_SECOP_CA_KEY:
1858                 nm = "Certificate chain CA key";
1859                 break;
1860         case SSL_SECOP_CA_MD:
1861                 cert_md = 1;
1862                 nm = "Certificate chain CA digest";
1863                 break;
1864         case SSL_SECOP_PEER_EE_KEY:
1865                 nm = "Peer Chain EE key";
1866                 break;
1867         case SSL_SECOP_PEER_CA_KEY:
1868                 nm = "Peer Chain CA key";
1869                 break;
1870         case SSL_SECOP_PEER_CA_MD:
1871                 cert_md = 1;
1872                 nm = "Peer chain CA digest";
1873                 break;
1874         default:
1875                 nm = NULL;
1876                 }
1877         if (nm)
1878                 BIO_printf(sdb->out, "%s=", nm);
1879
1880         switch (op & SSL_SECOP_OTHER_TYPE)
1881                 {
1882
1883         case SSL_SECOP_OTHER_CIPHER:
1884                 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1885                 break;
1886
1887         case SSL_SECOP_OTHER_CURVE:
1888                         {
1889                         const char *cname;
1890                         cname = EC_curve_nid2nist(nid);
1891                         if (cname == NULL)
1892                                 cname = OBJ_nid2sn(nid);
1893                         BIO_puts(sdb->out, cname);
1894                         }
1895                         break;
1896
1897         case SSL_SECOP_OTHER_DH:
1898                         {
1899                         DH *dh = other;
1900                         BIO_printf(sdb->out, "%d", BN_num_bits(dh->p));
1901                         break;
1902                         }
1903         case SSL_SECOP_OTHER_CERT:
1904                         {
1905                         if (cert_md)
1906                                 {
1907                                 int sig_nid = X509_get_signature_nid(other);
1908                                 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1909                                 }
1910                         else
1911                                 {
1912                                 EVP_PKEY *pkey = X509_get_pubkey(other);
1913                                 const char *algname = "";
1914                                 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1915                                                 &algname,
1916                                                 EVP_PKEY_get0_asn1(pkey));
1917                                 BIO_printf(sdb->out, "%s, bits=%d",
1918                                                 algname, EVP_PKEY_bits(pkey));
1919                                 EVP_PKEY_free(pkey);
1920                                 }
1921                         break;
1922                         }
1923         case SSL_SECOP_OTHER_SIGALG:
1924                         {
1925                         const unsigned char *salg = other;
1926                         const char *sname = NULL;
1927                         switch (salg[1])
1928                                 {
1929                         case TLSEXT_signature_anonymous:
1930                                 sname = "anonymous";
1931                                 break;
1932                         case TLSEXT_signature_rsa:
1933                                 sname = "RSA";
1934                                 break;
1935                         case TLSEXT_signature_dsa:
1936                                 sname = "DSA";
1937                                 break;
1938                         case TLSEXT_signature_ecdsa:
1939                                 sname = "ECDSA";
1940                                 break;
1941                                 }
1942
1943                         BIO_puts(sdb->out, OBJ_nid2sn(nid));
1944                         if (sname)
1945                                 BIO_printf(sdb->out, ", algorithm=%s", sname);
1946                         else
1947                                 BIO_printf(sdb->out, ", algid=%d", salg[1]);
1948                         break;
1949                         }
1950
1951                 }
1952
1953         if (show_bits)
1954                 BIO_printf(sdb->out, ", security bits=%d", bits);
1955         BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1956         return rv;
1957         }
1958
1959 void ssl_ctx_security_debug(SSL_CTX *ctx, BIO *out, int verbose)
1960         {
1961         static security_debug_ex sdb;
1962         sdb.out = out;
1963         sdb.verbose = verbose;
1964         sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1965         SSL_CTX_set_security_callback(ctx, security_callback_debug);
1966         SSL_CTX_set0_security_ex_data(ctx, &sdb);
1967         }
1968
1969
1970