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                                 case 23:
 885                                         str_details1 = ", SupplementalData";
 886                                         break;
 887                                         }
 888                                 }
 889                         }
 890
 891 #ifndef OPENSSL_NO_HEARTBEATS
 892                 if (content_type == 24) /* Heartbeat */
 893                         {
 894                         str_details1 = ", Heartbeat";
 895
 896                         if (len > 0)
 897                                 {
 898                                 switch (((const unsigned char*)buf)[0])
 899                                         {
 900                                 case 1:
 901                                         str_details1 = ", HeartbeatRequest";
 902                                         break;
 903                                 case 2:
 904                                         str_details1 = ", HeartbeatResponse";
 905                                         break;
 906                                         }
 907                                 }
 908                         }
 909 #endif
 910                 }
 911
 912         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);
 913
 914         if (len > 0)
 915                 {
 916                 size_t num, i;
 917
 918                 BIO_printf(bio, "   ");
 919                 num = len;
 920 #if 0
 921                 if (num > 16)
 922                         num = 16;
 923 #endif
 924                 for (i = 0; i < num; i++)
 925                         {
 926                         if (i % 16 == 0 && i > 0)
 927                                 BIO_printf(bio, "\n   ");
 928                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 929                         }
 930                 if (i < len)
 931                         BIO_printf(bio, " ...");
 932                 BIO_printf(bio, "\n");
 933                 }
 934         (void)BIO_flush(bio);
 935         }
 936
 937 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 938                                         unsigned char *data, int len,
 939                                         void *arg)
 940         {
 941         BIO *bio = arg;
 942         char *extname;
 943
 944         switch(type)
 945                 {
 946                 case TLSEXT_TYPE_server_name:
 947                 extname = "server name";
 948                 break;
 949
 950                 case TLSEXT_TYPE_max_fragment_length:
 951                 extname = "max fragment length";
 952                 break;
 953
 954                 case TLSEXT_TYPE_client_certificate_url:
 955                 extname = "client certificate URL";
 956                 break;
 957
 958                 case TLSEXT_TYPE_trusted_ca_keys:
 959                 extname = "trusted CA keys";
 960                 break;
 961
 962                 case TLSEXT_TYPE_truncated_hmac:
 963                 extname = "truncated HMAC";
 964                 break;
 965
 966                 case TLSEXT_TYPE_status_request:
 967                 extname = "status request";
 968                 break;
 969
 970                 case TLSEXT_TYPE_user_mapping:
 971                 extname = "user mapping";
 972                 break;
 973
 974                 case TLSEXT_TYPE_client_authz:
 975                 extname = "client authz";
 976                 break;
 977
 978                 case TLSEXT_TYPE_server_authz:
 979                 extname = "server authz";
 980                 break;
 981
 982                 case TLSEXT_TYPE_cert_type:
 983                 extname = "cert type";
 984                 break;
 985
 986                 case TLSEXT_TYPE_elliptic_curves:
 987                 extname = "elliptic curves";
 988                 break;
 989
 990                 case TLSEXT_TYPE_ec_point_formats:
 991                 extname = "EC point formats";
 992                 break;
 993
 994                 case TLSEXT_TYPE_srp:
 995                 extname = "SRP";
 996                 break;
 997
 998                 case TLSEXT_TYPE_signature_algorithms:
 999                 extname = "signature algorithms";
1000                 break;
1001
1002                 case TLSEXT_TYPE_use_srtp:
1003                 extname = "use SRTP";
1004                 break;
1005
1006                 case TLSEXT_TYPE_heartbeat:
1007                 extname = "heartbeat";
1008                 break;
1009
1010                 case TLSEXT_TYPE_session_ticket:
1011                 extname = "session ticket";
1012                 break;
1013
1014                 case TLSEXT_TYPE_renegotiate:
1015                 extname = "renegotiation info";
1016                 break;
1017
1018 #ifdef TLSEXT_TYPE_opaque_prf_input
1019                 case TLSEXT_TYPE_opaque_prf_input:
1020                 extname = "opaque PRF input";
1021                 break;
1022 #endif
1023 #ifdef TLSEXT_TYPE_next_proto_neg
1024                 case TLSEXT_TYPE_next_proto_neg:
1025                 extname = "next protocol";
1026                 break;
1027 #endif
1028 #ifdef TLSEXT_TYPE_encrypt_then_mac
1029                 case TLSEXT_TYPE_encrypt_then_mac:
1030                 extname = "encrypt-then-mac";
1031                 break;
1032 #endif
1033                 case TLSEXT_TYPE_padding:
1034                 extname = "TLS padding";
1035                 break;
1036
1037                 default:
1038                 extname = "unknown";
1039                 break;
1040
1041                 }
1042
1043         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1044                         client_server ? "server": "client",
1045                         extname, type, len);
1046         BIO_dump(bio, (char *)data, len);
1047         (void)BIO_flush(bio);
1048         }
1049
1050 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1051         {
1052         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1053         unsigned int length, resultlength;
1054         union {
1055                 struct sockaddr sa;
1056                 struct sockaddr_in s4;
1057 #if OPENSSL_USE_IPV6
1058                 struct sockaddr_in6 s6;
1059 #endif
1060         } peer;
1061
1062         /* Initialize a random secret */
1063         if (!cookie_initialized)
1064                 {
1065                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1066                         {
1067                         BIO_printf(bio_err,"error setting random cookie secret\n");
1068                         return 0;
1069                         }
1070                 cookie_initialized = 1;
1071                 }
1072
1073         /* Read peer information */
1074         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1075
1076         /* Create buffer with peer's address and port */
1077         length = 0;
1078         switch (peer.sa.sa_family)
1079                 {
1080         case AF_INET:
1081                 length += sizeof(struct in_addr);
1082                 length += sizeof(peer.s4.sin_port);
1083                 break;
1084 #if OPENSSL_USE_IPV6
1085         case AF_INET6:
1086                 length += sizeof(struct in6_addr);
1087                 length += sizeof(peer.s6.sin6_port);
1088                 break;
1089 #endif
1090         default:
1091                 OPENSSL_assert(0);
1092                 break;
1093                 }
1094         buffer = OPENSSL_malloc(length);
1095
1096         if (buffer == NULL)
1097                 {
1098                 BIO_printf(bio_err,"out of memory\n");
1099                 return 0;
1100                 }
1101
1102         switch (peer.sa.sa_family)
1103                 {
1104         case AF_INET:
1105                 memcpy(buffer,
1106                        &peer.s4.sin_port,
1107                        sizeof(peer.s4.sin_port));
1108                 memcpy(buffer + sizeof(peer.s4.sin_port),
1109                        &peer.s4.sin_addr,
1110                        sizeof(struct in_addr));
1111                 break;
1112 #if OPENSSL_USE_IPV6
1113         case AF_INET6:
1114                 memcpy(buffer,
1115                        &peer.s6.sin6_port,
1116                        sizeof(peer.s6.sin6_port));
1117                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1118                        &peer.s6.sin6_addr,
1119                        sizeof(struct in6_addr));
1120                 break;
1121 #endif
1122         default:
1123                 OPENSSL_assert(0);
1124                 break;
1125                 }
1126
1127         /* Calculate HMAC of buffer using the secret */
1128         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1129              buffer, length, result, &resultlength);
1130         OPENSSL_free(buffer);
1131
1132         memcpy(cookie, result, resultlength);
1133         *cookie_len = resultlength;
1134
1135         return 1;
1136         }
1137
1138 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1139         {
1140         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1141         unsigned int length, resultlength;
1142         union {
1143                 struct sockaddr sa;
1144                 struct sockaddr_in s4;
1145 #if OPENSSL_USE_IPV6
1146                 struct sockaddr_in6 s6;
1147 #endif
1148         } peer;
1149
1150         /* If secret isn't initialized yet, the cookie can't be valid */
1151         if (!cookie_initialized)
1152                 return 0;
1153
1154         /* Read peer information */
1155         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1156
1157         /* Create buffer with peer's address and port */
1158         length = 0;
1159         switch (peer.sa.sa_family)
1160                 {
1161         case AF_INET:
1162                 length += sizeof(struct in_addr);
1163                 length += sizeof(peer.s4.sin_port);
1164                 break;
1165 #if OPENSSL_USE_IPV6
1166         case AF_INET6:
1167                 length += sizeof(struct in6_addr);
1168                 length += sizeof(peer.s6.sin6_port);
1169                 break;
1170 #endif
1171         default:
1172                 OPENSSL_assert(0);
1173                 break;
1174                 }
1175         buffer = OPENSSL_malloc(length);
1176
1177         if (buffer == NULL)
1178                 {
1179                 BIO_printf(bio_err,"out of memory\n");
1180                 return 0;
1181                 }
1182
1183         switch (peer.sa.sa_family)
1184                 {
1185         case AF_INET:
1186                 memcpy(buffer,
1187                        &peer.s4.sin_port,
1188                        sizeof(peer.s4.sin_port));
1189                 memcpy(buffer + sizeof(peer.s4.sin_port),
1190                        &peer.s4.sin_addr,
1191                        sizeof(struct in_addr));
1192                 break;
1193 #if OPENSSL_USE_IPV6
1194         case AF_INET6:
1195                 memcpy(buffer,
1196                        &peer.s6.sin6_port,
1197                        sizeof(peer.s6.sin6_port));
1198                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1199                        &peer.s6.sin6_addr,
1200                        sizeof(struct in6_addr));
1201                 break;
1202 #endif
1203         default:
1204                 OPENSSL_assert(0);
1205                 break;
1206                 }
1207
1208         /* Calculate HMAC of buffer using the secret */
1209         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1210              buffer, length, result, &resultlength);
1211         OPENSSL_free(buffer);
1212
1213         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1214                 return 1;
1215
1216         return 0;
1217         }
1218
1219 /* Example of extended certificate handling. Where the standard support
1220  * of one certificate per algorithm is not sufficient an application
1221  * can decide which certificate(s) to use at runtime based on whatever
1222  * criteria it deems appropriate.
1223  */
1224
1225 /* Linked list of certificates, keys and chains */
1226 struct  ssl_excert_st
1227         {
1228         int certform;
1229         const char *certfile;
1230         int keyform;
1231         const char *keyfile;
1232         const char *chainfile;
1233         X509 *cert;
1234         EVP_PKEY *key;
1235         STACK_OF(X509) *chain;
1236         int build_chain;
1237         struct ssl_excert_st *next, *prev;
1238         };
1239
1240 struct chain_flags
1241         {
1242         int flag;
1243         const char *name;
1244         };
1245
1246 struct chain_flags chain_flags_list[] =
1247         {
1248                 {CERT_PKEY_VALID, "Overall Validity"},
1249                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1250                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1251                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1252                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1253                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1254                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1255                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1256                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1257                 {0, NULL}
1258         };
1259
1260
1261 static void print_chain_flags(BIO *out, int flags)
1262         {
1263         struct chain_flags *ctmp = chain_flags_list;
1264         while(ctmp->name)
1265                 {
1266                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1267                                 flags & ctmp->flag ? "OK" : "NOT OK");
1268                 ctmp++;
1269                 }
1270         }
1271
1272 /* Very basic selection callback: just use any certificate chain
1273  * reported as valid. More sophisticated could prioritise according
1274  * to local policy.
1275  */
1276 static int set_cert_cb(SSL *ssl, void *arg)
1277         {
1278         int i, rv;
1279         SSL_EXCERT *exc = arg;
1280 #ifdef CERT_CB_TEST_RETRY
1281         static int retry_cnt;
1282         if (retry_cnt < 5)
1283                 {
1284                 retry_cnt++;
1285                 fprintf(stderr, "Certificate callback retry test: count %d\n",
1286                                                                 retry_cnt);
1287                 return -1;
1288                 }
1289 #endif
1290         SSL_certs_clear(ssl);
1291
1292         if (!exc)
1293                 return 1;
1294
1295         /* Go to end of list and traverse backwards since we prepend
1296          * newer entries this retains the original order.
1297          */
1298         while (exc->next)
1299                 exc = exc->next;
1300
1301         i = 0;
1302
1303         while(exc)
1304                 {
1305                 i++;
1306                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1307                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1308                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1309                                                         XN_FLAG_ONELINE);
1310                 BIO_puts(bio_err, "\n");
1311
1312                 print_chain_flags(bio_err, rv);
1313                 if (rv & CERT_PKEY_VALID)
1314                         {
1315                         SSL_use_certificate(ssl, exc->cert);
1316                         SSL_use_PrivateKey(ssl, exc->key);
1317                         /* NB: we wouldn't normally do this as it is
1318                          * not efficient building chains on each connection
1319                          * better to cache the chain in advance.
1320                          */
1321                         if (exc->build_chain)
1322                                 {
1323                                 if (!SSL_build_cert_chain(ssl, 0))
1324                                         return 0;
1325                                 }
1326                         else if (exc->chain)
1327                                 SSL_set1_chain(ssl, exc->chain);
1328                         }
1329                 exc = exc->prev;
1330                 }
1331         return 1;
1332         }
1333
1334 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1335         {
1336         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1337         }
1338
1339 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1340         {
1341         SSL_EXCERT *exc;
1342         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1343         if (!exc)
1344                 return 0;
1345         exc->certfile = NULL;
1346         exc->keyfile = NULL;
1347         exc->chainfile = NULL;
1348         exc->cert = NULL;
1349         exc->key = NULL;
1350         exc->chain = NULL;
1351         exc->prev = NULL;
1352         exc->build_chain = 0;
1353
1354         exc->next = *pexc;
1355         *pexc = exc;
1356
1357         if (exc->next)
1358                 {
1359                 exc->certform = exc->next->certform;
1360                 exc->keyform = exc->next->keyform;
1361                 exc->next->prev = exc;
1362                 }
1363         else
1364                 {
1365                 exc->certform = FORMAT_PEM;
1366                 exc->keyform = FORMAT_PEM;
1367                 }
1368         return 1;
1369
1370         }
1371
1372 void ssl_excert_free(SSL_EXCERT *exc)
1373         {
1374         SSL_EXCERT *curr;
1375         while (exc)
1376                 {
1377                 if (exc->cert)
1378                         X509_free(exc->cert);
1379                 if (exc->key)
1380                         EVP_PKEY_free(exc->key);
1381                 if (exc->chain)
1382                         sk_X509_pop_free(exc->chain, X509_free);
1383                 curr = exc;
1384                 exc = exc->next;
1385                 OPENSSL_free(curr);
1386                 }
1387         }
1388
1389 int load_excert(SSL_EXCERT **pexc, BIO *err)
1390         {
1391         SSL_EXCERT *exc = *pexc;
1392         if (!exc)
1393                 return 1;
1394         /* If nothing in list, free and set to NULL */
1395         if (!exc->certfile && !exc->next)
1396                 {
1397                 ssl_excert_free(exc);
1398                 *pexc = NULL;
1399                 return 1;
1400                 }
1401         for(; exc; exc=exc->next)
1402                 {
1403                 if (!exc->certfile)
1404                         {
1405                         BIO_printf(err, "Missing filename\n");
1406                         return 0;
1407                         }
1408                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1409                                         NULL, NULL, "Server Certificate");
1410                 if (!exc->cert)
1411                         return 0;
1412                 if (exc->keyfile)
1413                         exc->keyfile = exc->certfile;
1414                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1415                                         NULL, NULL, "Server Certificate");
1416                 if (!exc->key)
1417                         return 0;
1418                 if (exc->chainfile)
1419                         {
1420                         exc->chain = load_certs(err,
1421                                                 exc->chainfile, FORMAT_PEM,
1422                                                 NULL, NULL,
1423                                                 "Server Chain");
1424                         if (!exc->chainfile)
1425                                 return 0;
1426                         }
1427                 }
1428         return 1;
1429         }
1430
1431
1432 int args_excert(char ***pargs, int *pargc,
1433                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1434         {
1435         char *arg = **pargs, *argn = (*pargs)[1];
1436         SSL_EXCERT *exc = *pexc;
1437         int narg = 2;
1438         if (!exc)
1439                 {
1440                 if (ssl_excert_prepend(&exc))
1441                         *pexc = exc;
1442                 else
1443                         {
1444                         BIO_printf(err, "Error initialising xcert\n");
1445                         *badarg = 1;
1446                         goto err;
1447                         }
1448                 }
1449         if (strcmp(arg, "-xcert") == 0)
1450                 {
1451                 if (!argn)
1452                         {
1453                         *badarg = 1;
1454                         return 1;
1455                         }
1456                 if (exc->certfile && !ssl_excert_prepend(&exc))
1457                         {
1458                         BIO_printf(err, "Error adding xcert\n");
1459                         *badarg = 1;
1460                         goto err;
1461                         }
1462                 exc->certfile = argn;
1463                 }
1464         else if (strcmp(arg,"-xkey") == 0)
1465                 {
1466                 if (!argn)
1467                         {
1468                         *badarg = 1;
1469                         return 1;
1470                         }
1471                 if (exc->keyfile)
1472                         {
1473                         BIO_printf(err, "Key already specified\n");
1474                         *badarg = 1;
1475                         return 1;
1476                         }
1477                 exc->keyfile = argn;
1478                 }
1479         else if (strcmp(arg,"-xchain") == 0)
1480                 {
1481                 if (!argn)
1482                         {
1483                         *badarg = 1;
1484                         return 1;
1485                         }
1486                 if (exc->chainfile)
1487                         {
1488                         BIO_printf(err, "Chain already specified\n");
1489                         *badarg = 1;
1490                         return 1;
1491                         }
1492                 exc->chainfile = argn;
1493                 }
1494         else if (strcmp(arg,"-xchain_build") == 0)
1495                 {
1496                 narg = 1;
1497                 exc->build_chain = 1;
1498                 }
1499         else if (strcmp(arg,"-xcertform") == 0)
1500                 {
1501                 if (!argn)
1502                         {
1503                         *badarg = 1;
1504                         goto err;
1505                         }
1506                 exc->certform = str2fmt(argn);
1507                 }
1508         else if (strcmp(arg,"-xkeyform") == 0)
1509                 {
1510                 if (!argn)
1511                         {
1512                         *badarg = 1;
1513                         goto err;
1514                         }
1515                 exc->keyform = str2fmt(argn);
1516                 }
1517         else
1518                 return 0;
1519
1520         (*pargs) += narg;
1521
1522         if (pargc)
1523                 *pargc -= narg;
1524
1525         *pexc = exc;
1526
1527         return 1;
1528
1529         err:
1530         ERR_print_errors(err);
1531         ssl_excert_free(exc);
1532         *pexc = NULL;
1533         return 1;
1534         }
1535
1536 static void print_raw_cipherlist(BIO *bio, SSL *s)
1537         {
1538         const unsigned char *rlist;
1539         static const unsigned char scsv_id[] = {0, 0, 0xFF};
1540         size_t i, rlistlen, num;
1541         if (!SSL_is_server(s))
1542                 return;
1543         num = SSL_get0_raw_cipherlist(s, NULL);
1544         rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1545         BIO_puts(bio, "Client cipher list: ");
1546         for (i = 0; i < rlistlen; i += num, rlist += num)
1547                 {
1548                 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1549                 if (i)
1550                         BIO_puts(bio, ":");
1551                 if (c)
1552                         BIO_puts(bio, SSL_CIPHER_get_name(c));
1553                 else if (!memcmp(rlist, scsv_id - num + 3, num))
1554                         BIO_puts(bio, "SCSV");
1555                 else
1556                         {
1557                         size_t j;
1558                         BIO_puts(bio, "0x");
1559                         for (j = 0; j < num; j++)
1560                                 BIO_printf(bio, "%02X", rlist[j]);
1561                         }
1562                 }
1563         BIO_puts(bio, "\n");
1564         }
1565
1566
1567 void print_ssl_summary(BIO *bio, SSL *s)
1568         {
1569         const SSL_CIPHER *c;
1570         X509 *peer;
1571         /*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
1572         BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
1573         print_raw_cipherlist(bio, s);
1574         c = SSL_get_current_cipher(s);
1575         BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1576         do_print_sigalgs(bio, s, 0);
1577         peer = SSL_get_peer_certificate(s);
1578         if (peer)
1579                 {
1580                 int nid;
1581                 BIO_puts(bio, "Peer certificate: ");
1582                 X509_NAME_print_ex(bio, X509_get_subject_name(peer),
1583                                         0, XN_FLAG_ONELINE);
1584                 BIO_puts(bio, "\n");
1585                 if (SSL_get_peer_signature_nid(s, &nid))
1586                         BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
1587                 }
1588         else
1589                 BIO_puts(bio, "No peer certificate\n");
1590         if (peer)
1591                 X509_free(peer);
1592 #ifndef OPENSSL_NO_EC
1593         ssl_print_point_formats(bio, s);
1594         if (SSL_is_server(s))
1595                 ssl_print_curves(bio, s, 1);
1596         else
1597                 ssl_print_tmp_key(bio, s);
1598 #else
1599         if (!SSL_is_server(s))
1600                 ssl_print_tmp_key(bio, s);
1601 #endif
1602         }
1603
1604 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1605                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1606         {
1607         char *arg = **pargs, *argn = (*pargs)[1];
1608         int rv;
1609
1610         /* Attempt to run SSL configuration command */
1611         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1612         /* If parameter not recognised just return */
1613         if (rv == 0)
1614                 return 0;
1615         /* see if missing argument error */
1616         if (rv == -3)
1617                 {
1618                 BIO_printf(err, "%s needs an argument\n", arg);
1619                 *badarg = 1;
1620                 goto end;
1621                 }
1622         /* Check for some other error */
1623         if (rv < 0)
1624                 {
1625                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1626                                                 arg, argn ? argn : "");
1627                 *badarg = 1;
1628                 goto end;
1629                 }
1630         /* Store command and argument */
1631         /* If only one argument processed store value as NULL */
1632         if (rv == 1)
1633                 argn = NULL;
1634         if (!*pstr)
1635                 *pstr = sk_OPENSSL_STRING_new_null();
1636         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1637                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1638                 {
1639                 BIO_puts(err, "Memory allocation failure\n");
1640                 goto end;
1641                 }
1642
1643         end:
1644         if (*badarg)
1645                 ERR_print_errors(err);
1646
1647         return 1;
1648         }
1649
1650 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1651                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1652         {
1653         int i;
1654         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1655         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1656                 {
1657                 const char *param = sk_OPENSSL_STRING_value(str, i);
1658                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1659                 /* If no_ecdhe or named curve already specified don't need
1660                  * a default.
1661                  */
1662                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1663                         no_ecdhe = 1;
1664 #ifndef OPENSSL_NO_JPAKE
1665                 if (!no_jpake && !strcmp(param, "-cipher"))
1666                         {
1667                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1668                         return 0;
1669                         }
1670 #endif
1671                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1672                         {
1673                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1674                                                 param, value ? value : "");
1675                         ERR_print_errors(err);
1676                         return 0;
1677                         }
1678                 }
1679         /* This is a special case to keep existing s_server functionality:
1680          * if we don't have any curve specified *and* we haven't disabled
1681          * ECDHE then use P-256.
1682          */
1683         if (!no_ecdhe)
1684                 {
1685                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1686                         {
1687                         BIO_puts(err, "Error setting EC curve\n");
1688                         ERR_print_errors(err);
1689                         return 0;
1690                         }
1691                 }
1692 #ifndef OPENSSL_NO_JPAKE
1693         if (!no_jpake)
1694                 {
1695                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1696                         {
1697                         BIO_puts(err, "Error setting cipher to PSK\n");
1698                         ERR_print_errors(err);
1699                         return 0;
1700                         }
1701                 }
1702 #endif
1703         if (!SSL_CONF_CTX_finish(cctx))
1704                 {
1705                 BIO_puts(err, "Error finishing context\n");
1706                 ERR_print_errors(err);
1707                 return 0;
1708                 }
1709         return 1;
1710         }
1711
1712 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1713         {
1714         X509_CRL *crl;
1715         int i;
1716         for (i = 0; i < sk_X509_CRL_num(crls); i++)
1717                 {
1718                 crl = sk_X509_CRL_value(crls, i);
1719                 X509_STORE_add_crl(st, crl);
1720                 }
1721         return 1;
1722         }
1723
1724 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1725         {
1726         X509_STORE *st;
1727         st = SSL_CTX_get_cert_store(ctx);
1728         add_crls_store(st, crls);
1729         if (crl_download)
1730                 store_setup_crl_download(st);
1731         return 1;
1732         }
1733
1734 int ssl_load_stores(SSL_CTX *ctx,
1735                         const char *vfyCApath, const char *vfyCAfile,
1736                         const char *chCApath, const char *chCAfile,
1737                         STACK_OF(X509_CRL) *crls, int crl_download)
1738         {
1739         X509_STORE *vfy = NULL, *ch = NULL;
1740         int rv = 0;
1741         if (vfyCApath || vfyCAfile)
1742                 {
1743                 vfy = X509_STORE_new();
1744                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1745                         goto err;
1746                 add_crls_store(vfy, crls);
1747                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1748                 if (crl_download)
1749                         store_setup_crl_download(vfy);
1750                 }
1751         if (chCApath || chCAfile)
1752                 {
1753                 ch = X509_STORE_new();
1754                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1755                         goto err;
1756                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1757                 }
1758         rv = 1;
1759         err:
1760         if (vfy)
1761                 X509_STORE_free(vfy);
1762         if (ch)
1763                 X509_STORE_free(ch);
1764         return rv;
1765         }
1766
1767 /* Verbose print out of security callback */
1768
1769 typedef struct
1770         {
1771         BIO *out;
1772         int verbose;
1773         int (*old_cb)(SSL *s, SSL_CTX *ctx, int op, int bits, int nid,
1774                                 void *other, void *ex);
1775         } security_debug_ex;
1776
1777 static int security_callback_debug(SSL *s, SSL_CTX *ctx,
1778                                 int op, int bits, int nid,
1779                                 void *other, void *ex)
1780         {
1781         security_debug_ex *sdb = ex;
1782         int rv, show_bits = 1, cert_md = 0;
1783         const char *nm;
1784         rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1785         if (rv == 1 && sdb->verbose < 2)
1786                 return 1;
1787         BIO_puts(sdb->out, "Security callback: ");
1788
1789         switch (op)
1790                 {
1791         case SSL_SECOP_CIPHER_SUPPORTED:
1792                 nm = "Supported Ciphersuite";
1793                 break;
1794         case SSL_SECOP_CIPHER_SHARED:
1795                 nm = "Shared Ciphersuite";
1796                 break;
1797         case SSL_SECOP_CIPHER_CHECK:
1798                 nm = "Check Ciphersuite";
1799                 break;
1800         case SSL_SECOP_TICKET:
1801                 BIO_puts(sdb->out, "Session ticket");
1802                 show_bits = 0;
1803                 nm = NULL;
1804                 break;
1805         case SSL_SECOP_COMPRESSION:
1806                 BIO_puts(sdb->out, "SSL compression");
1807                 show_bits = 0;
1808                 nm = NULL;
1809                 break;
1810 #ifndef OPENSSL_NO_DH
1811         case SSL_SECOP_TMP_DH:
1812                 nm = "Temp DH key bits";
1813                 break;
1814 #endif
1815         case SSL_SECOP_CURVE_SUPPORTED:
1816                 nm = "Supported Curve";
1817                 break;
1818         case SSL_SECOP_CURVE_SHARED:
1819                 nm = "Shared Curve";
1820                 break;
1821         case SSL_SECOP_CURVE_CHECK:
1822                 nm = "Check Curve";
1823                 break;
1824         case SSL_SECOP_SSL2_COMPAT:
1825                 BIO_puts(sdb->out, "SSLv2 compatible");
1826                 show_bits = 0;
1827                 nm = NULL;
1828                 break;
1829         case SSL_SECOP_VERSION:
1830                 BIO_printf(sdb->out, "Version=%s", ssl_version_str(nid));
1831                 show_bits = 0;
1832                 nm = NULL;
1833                 break;
1834         case SSL_SECOP_SIGALG_SUPPORTED:
1835                 nm = "Supported Signature Algorithm digest";
1836                 break;
1837         case SSL_SECOP_SIGALG_SHARED:
1838                 nm = "Shared Signature Algorithm digest";
1839                 break;
1840         case SSL_SECOP_SIGALG_CHECK:
1841                 nm = "Check Signature Algorithm digest";
1842                 break;
1843         case SSL_SECOP_SIGALG_MASK:
1844                 nm = "Signature Algorithm mask";
1845                 break;
1846         case SSL_SECOP_EE_KEY:
1847                 nm = "Certificate chain EE key";
1848                 break;
1849         case SSL_SECOP_CA_KEY:
1850                 nm = "Certificate chain CA key";
1851                 break;
1852         case SSL_SECOP_CA_MD:
1853                 cert_md = 1;
1854                 nm = "Certificate chain CA digest";
1855                 break;
1856         case SSL_SECOP_PEER_EE_KEY:
1857                 nm = "Peer Chain EE key";
1858                 break;
1859         case SSL_SECOP_PEER_CA_KEY:
1860                 nm = "Peer Chain CA key";
1861                 break;
1862         case SSL_SECOP_PEER_CA_MD:
1863                 cert_md = 1;
1864                 nm = "Peer chain CA digest";
1865                 break;
1866         default:
1867                 nm = NULL;
1868                 }
1869         if (nm)
1870                 BIO_printf(sdb->out, "%s=", nm);
1871
1872         switch (op & SSL_SECOP_OTHER_TYPE)
1873                 {
1874
1875         case SSL_SECOP_OTHER_CIPHER:
1876                 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1877                 break;
1878
1879         case SSL_SECOP_OTHER_CURVE:
1880                         {
1881                         const char *cname;
1882                         cname = EC_curve_nid2nist(nid);
1883                         if (cname == NULL)
1884                                 cname = OBJ_nid2sn(nid);
1885                         BIO_puts(sdb->out, cname);
1886                         }
1887                         break;
1888
1889         case SSL_SECOP_OTHER_DH:
1890                         {
1891                         DH *dh = other;
1892                         BIO_printf(sdb->out, "%d", BN_num_bits(dh->p));
1893                         break;
1894                         }
1895         case SSL_SECOP_OTHER_CERT:
1896                         {
1897                         if (cert_md)
1898                                 {
1899                                 int sig_nid = X509_get_signature_nid(other);
1900                                 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1901                                 }
1902                         else
1903                                 {
1904                                 EVP_PKEY *pkey = X509_get_pubkey(other);
1905                                 const char *algname = "";
1906                                 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1907                                                 &algname,
1908                                                 EVP_PKEY_get0_asn1(pkey));
1909                                 BIO_printf(sdb->out, "%s, bits=%d",
1910                                                 algname, EVP_PKEY_bits(pkey));
1911                                 EVP_PKEY_free(pkey);
1912                                 }
1913                         break;
1914                         }
1915         case SSL_SECOP_OTHER_SIGALG:
1916                         {
1917                         const unsigned char *salg = other;
1918                         const char *sname = NULL;
1919                         switch (salg[1])
1920                                 {
1921                         case TLSEXT_signature_anonymous:
1922                                 sname = "anonymous";
1923                                 break;
1924                         case TLSEXT_signature_rsa:
1925                                 sname = "RSA";
1926                                 break;
1927                         case TLSEXT_signature_dsa:
1928                                 sname = "DSA";
1929                                 break;
1930                         case TLSEXT_signature_ecdsa:
1931                                 sname = "ECDSA";
1932                                 break;
1933                                 }
1934
1935                         BIO_puts(sdb->out, OBJ_nid2sn(nid));
1936                         if (sname)
1937                                 BIO_printf(sdb->out, ", algorithm=%s", sname);
1938                         else
1939                                 BIO_printf(sdb->out, ", algid=%d", salg[1]);
1940                         break;
1941                         }
1942
1943                 }
1944
1945         if (show_bits)
1946                 BIO_printf(sdb->out, ", security bits=%d", bits);
1947         BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1948         return rv;
1949         }
1950
1951 void ssl_ctx_security_debug(SSL_CTX *ctx, BIO *out, int verbose)
1952         {
1953         static security_debug_ex sdb;
1954         sdb.out = out;
1955         sdb.verbose = verbose;
1956         sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1957         SSL_CTX_set_security_callback(ctx, security_callback_debug);
1958         SSL_CTX_set0_security_ex_data(ctx, &sdb);
1959         }
1960
1961
1962