apps/s_cb.c

   1 /* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58 /* ====================================================================
  59  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
  60  *
  61  * Redistribution and use in source and binary forms, with or without
  62  * modification, are permitted provided that the following conditions
  63  * are met:
  64  *
  65  * 1. Redistributions of source code must retain the above copyright
  66  *    notice, this list of conditions and the following disclaimer.
  67  *
  68  * 2. Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in
  70  *    the documentation and/or other materials provided with the
  71  *    distribution.
  72  *
  73  * 3. All advertising materials mentioning features or use of this
  74  *    software must display the following acknowledgment:
  75  *    "This product includes software developed by the OpenSSL Project
  76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  77  *
  78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  79  *    endorse or promote products derived from this software without
  80  *    prior written permission. For written permission, please contact
  81  *    openssl-core@openssl.org.
  82  *
  83  * 5. Products derived from this software may not be called "OpenSSL"
  84  *    nor may "OpenSSL" appear in their names without prior written
  85  *    permission of the OpenSSL Project.
  86  *
  87  * 6. Redistributions of any form whatsoever must retain the following
  88  *    acknowledgment:
  89  *    "This product includes software developed by the OpenSSL Project
  90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  91  *
  92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 103  * OF THE POSSIBILITY OF SUCH DAMAGE.
 104  * ====================================================================
 105  *
 106  * This product includes cryptographic software written by Eric Young
 107  * (eay@cryptsoft.com).  This product includes software written by Tim
 108  * Hudson (tjh@cryptsoft.com).
 109  *
 110  */
 111
 112 #include <stdio.h>
 113 #include <stdlib.h>
 114 #define USE_SOCKETS
 115 #define NON_MAIN
 116 #include "apps.h"
 117 #undef NON_MAIN
 118 #undef USE_SOCKETS
 119 #include <openssl/err.h>
 120 #include <openssl/rand.h>
 121 #include <openssl/x509.h>
 122 #include <openssl/ssl.h>
 123 #include "s_apps.h"
 124
 125 #define COOKIE_SECRET_LENGTH    16
 126
 127 int verify_depth=0;
 128 int verify_quiet=0;
 129 int verify_error=X509_V_OK;
 130 int verify_return_error=0;
 131 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
 132 int cookie_initialized=0;
 133
 134 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
 135         {
 136         X509 *err_cert;
 137         int err,depth;
 138
 139         err_cert=X509_STORE_CTX_get_current_cert(ctx);
 140         err=    X509_STORE_CTX_get_error(ctx);
 141         depth=  X509_STORE_CTX_get_error_depth(ctx);
 142
 143         if (!verify_quiet || !ok)
 144                 {
 145                 BIO_printf(bio_err,"depth=%d ",depth);
 146                 if (err_cert)
 147                         {
 148                         X509_NAME_print_ex(bio_err,
 149                                         X509_get_subject_name(err_cert),
 150                                         0, XN_FLAG_ONELINE);
 151                         BIO_puts(bio_err, "\n");
 152                         }
 153                 else
 154                         BIO_puts(bio_err, "<no cert>\n");
 155                 }
 156         if (!ok)
 157                 {
 158                 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
 159                         X509_verify_cert_error_string(err));
 160                 if (verify_depth >= depth)
 161                         {
 162                         if (!verify_return_error)
 163                                 ok=1;
 164                         verify_error=X509_V_OK;
 165                         }
 166                 else
 167                         {
 168                         ok=0;
 169                         verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
 170                         }
 171                 }
 172         switch (err)
 173                 {
 174         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
 175                 BIO_puts(bio_err,"issuer= ");
 176                 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
 177                                         0, XN_FLAG_ONELINE);
 178                 BIO_puts(bio_err, "\n");
 179                 break;
 180         case X509_V_ERR_CERT_NOT_YET_VALID:
 181         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
 182                 BIO_printf(bio_err,"notBefore=");
 183                 ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
 184                 BIO_printf(bio_err,"\n");
 185                 break;
 186         case X509_V_ERR_CERT_HAS_EXPIRED:
 187         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
 188                 BIO_printf(bio_err,"notAfter=");
 189                 ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
 190                 BIO_printf(bio_err,"\n");
 191                 break;
 192         case X509_V_ERR_NO_EXPLICIT_POLICY:
 193                 if (!verify_quiet)
 194                         policies_print(bio_err, ctx);
 195                 break;
 196                 }
 197         if (err == X509_V_OK && ok == 2 && !verify_quiet)
 198                 policies_print(bio_err, ctx);
 199         if (ok && !verify_quiet)
 200                 BIO_printf(bio_err,"verify return:%d\n",ok);
 201         return(ok);
 202         }
 203
 204 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
 205         {
 206         if (cert_file != NULL)
 207                 {
 208                 /*
 209                 SSL *ssl;
 210                 X509 *x509;
 211                 */
 212
 213                 if (SSL_CTX_use_certificate_file(ctx,cert_file,
 214                         SSL_FILETYPE_PEM) <= 0)
 215                         {
 216                         BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
 217                         ERR_print_errors(bio_err);
 218                         return(0);
 219                         }
 220                 if (key_file == NULL) key_file=cert_file;
 221                 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
 222                         SSL_FILETYPE_PEM) <= 0)
 223                         {
 224                         BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
 225                         ERR_print_errors(bio_err);
 226                         return(0);
 227                         }
 228
 229                 /*
 230                 In theory this is no longer needed
 231                 ssl=SSL_new(ctx);
 232                 x509=SSL_get_certificate(ssl);
 233
 234                 if (x509 != NULL) {
 235                         EVP_PKEY *pktmp;
 236                         pktmp = X509_get_pubkey(x509);
 237                         EVP_PKEY_copy_parameters(pktmp,
 238                                                 SSL_get_privatekey(ssl));
 239                         EVP_PKEY_free(pktmp);
 240                 }
 241                 SSL_free(ssl);
 242                 */
 243
 244                 /* If we are using DSA, we can copy the parameters from
 245                  * the private key */
 246
 247
 248                 /* Now we know that a key and cert have been set against
 249                  * the SSL context */
 250                 if (!SSL_CTX_check_private_key(ctx))
 251                         {
 252                         BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 253                         return(0);
 254                         }
 255                 }
 256         return(1);
 257         }
 258
 259 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
 260                        STACK_OF(X509) *chain, int build_chain)
 261         {
 262         int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
 263         if (cert == NULL)
 264                 return 1;
 265         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
 266                 {
 267                 BIO_printf(bio_err,"error setting certificate\n");
 268                 ERR_print_errors(bio_err);
 269                 return 0;
 270                 }
 271
 272         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
 273                 {
 274                 BIO_printf(bio_err,"error setting private key\n");
 275                 ERR_print_errors(bio_err);
 276                 return 0;
 277                 }
 278
 279         /* Now we know that a key and cert have been set against
 280          * the SSL context */
 281         if (!SSL_CTX_check_private_key(ctx))
 282                 {
 283                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 284                 return 0;
 285                 }
 286         if (chain && !SSL_CTX_set1_chain(ctx, chain))
 287                 {
 288                 BIO_printf(bio_err,"error setting certificate chain\n");
 289                 ERR_print_errors(bio_err);
 290                 return 0;
 291                 }
 292         if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags))
 293                 {
 294                 BIO_printf(bio_err,"error building certificate chain\n");
 295                 ERR_print_errors(bio_err);
 296                 return 0;
 297                 }
 298         return 1;
 299         }
 300
 301 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
 302         {
 303         const unsigned char *p;
 304         int i;
 305         int cert_type_num = SSL_get0_certificate_types(s, &p);
 306         if (!cert_type_num)
 307                 return;
 308         BIO_puts(bio, "Client Certificate Types: ");
 309         for (i = 0; i < cert_type_num; i++)
 310                 {
 311                 unsigned char cert_type = p[i];
 312                 char *cname;
 313                 switch(cert_type)
 314                         {
 315                 case TLS_CT_RSA_SIGN:
 316                         cname = "RSA sign";
 317                         break;
 318
 319                 case TLS_CT_DSS_SIGN:
 320                         cname = "DSA sign";
 321                         break;
 322
 323                 case TLS_CT_RSA_FIXED_DH:
 324                         cname = "RSA fixed DH";
 325                         break;
 326
 327                 case TLS_CT_DSS_FIXED_DH:
 328                         cname = "DSS fixed DH";
 329                         break;
 330
 331                 case TLS_CT_ECDSA_SIGN:
 332                         cname = "ECDSA sign";
 333                         break;
 334
 335                 case TLS_CT_RSA_FIXED_ECDH:
 336                         cname = "RSA fixed ECDH";
 337                         break;
 338
 339                 case TLS_CT_ECDSA_FIXED_ECDH:
 340                         cname = "ECDSA fixed ECDH";
 341                         break;
 342
 343                 case TLS_CT_GOST94_SIGN:
 344                         cname = "GOST94 Sign";
 345                         break;
 346
 347                 case TLS_CT_GOST01_SIGN:
 348                         cname = "GOST01 Sign";
 349                         break;
 350
 351                 default:
 352                          cname = NULL;
 353                         }
 354
 355                 if (i)
 356                         BIO_puts(bio, ", ");
 357
 358                 if (cname)
 359                         BIO_puts(bio, cname);
 360                 else
 361                         BIO_printf(bio, "UNKNOWN (%d),", cert_type);
 362                 }
 363         BIO_puts(bio, "\n");
 364         }
 365
 366 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
 367         {
 368         int i, nsig, client;
 369         client = SSL_is_server(s) ? 0 : 1;
 370         if (shared)
 371                 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
 372                                                         NULL, NULL);
 373         else
 374                 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
 375         if (nsig == 0)
 376                 return 1;
 377
 378         if (shared)
 379                 BIO_puts(out, "Shared ");
 380
 381         if (client)
 382                 BIO_puts(out, "Requested ");
 383         BIO_puts(out, "Signature Algorithms: ");
 384         for (i = 0; i < nsig; i++)
 385                 {
 386                 int hash_nid, sign_nid;
 387                 unsigned char rhash, rsign;
 388                 const char *sstr = NULL;
 389                 if (shared)
 390                         SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 391                                                         &rsign, &rhash);
 392                 else
 393                         SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
 394                                                         &rsign, &rhash);
 395                 if (i)
 396                         BIO_puts(out, ":");
 397                 if (sign_nid == EVP_PKEY_RSA)
 398                         sstr = "RSA";
 399                 else if(sign_nid == EVP_PKEY_DSA)
 400                         sstr = "DSA";
 401                 else if(sign_nid == EVP_PKEY_EC)
 402                         sstr = "ECDSA";
 403                 if (sstr)
 404                         BIO_printf(out,"%s+", sstr);
 405                 else
 406                         BIO_printf(out,"0x%02X+", (int)rsign);
 407                 if (hash_nid != NID_undef)
 408                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
 409                 else
 410                         BIO_printf(out,"0x%02X", (int)rhash);
 411                 }
 412         BIO_puts(out, "\n");
 413         return 1;
 414         }
 415
 416 int ssl_print_sigalgs(BIO *out, SSL *s)
 417         {
 418         int mdnid;
 419         if (!SSL_is_server(s))
 420                 ssl_print_client_cert_types(out, s);
 421         do_print_sigalgs(out, s, 0);
 422         do_print_sigalgs(out, s, 1);
 423         if (SSL_get_peer_signature_nid(s, &mdnid))
 424                 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
 425         return 1;
 426         }
 427 #ifndef OPENSSL_NO_EC
 428 int ssl_print_point_formats(BIO *out, SSL *s)
 429         {
 430         int i, nformats;
 431         const char *pformats;
 432         nformats = SSL_get0_ec_point_formats(s, &pformats);
 433         if (nformats <= 0)
 434                 return 1;
 435         BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
 436         for (i = 0; i < nformats; i++, pformats++)
 437                 {
 438                 if (i)
 439                         BIO_puts(out, ":");
 440                 switch(*pformats)
 441                         {
 442                 case TLSEXT_ECPOINTFORMAT_uncompressed:
 443                         BIO_puts(out, "uncompressed");
 444                         break;
 445
 446                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
 447                         BIO_puts(out, "ansiX962_compressed_prime");
 448                         break;
 449
 450                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
 451                         BIO_puts(out, "ansiX962_compressed_char2");
 452                         break;
 453
 454                 default:
 455                         BIO_printf(out, "unknown(%d)", (int)*pformats);
 456                         break;
 457
 458                         }
 459                 }
 460         if (nformats <= 0)
 461                 BIO_puts(out, "NONE");
 462         BIO_puts(out, "\n");
 463         return 1;
 464         }
 465
 466 int ssl_print_curves(BIO *out, SSL *s, int noshared)
 467         {
 468         int i, ncurves, *curves, nid;
 469         const char *cname;
 470         ncurves = SSL_get1_curves(s, NULL);
 471         if (ncurves <= 0)
 472                 return 1;
 473         curves = OPENSSL_malloc(ncurves * sizeof(int));
 474         SSL_get1_curves(s, curves);
 475
 476         BIO_puts(out, "Supported Elliptic Curves: ");
 477         for (i = 0; i < ncurves; i++)
 478                 {
 479                 if (i)
 480                         BIO_puts(out, ":");
 481                 nid = curves[i];
 482                 /* If unrecognised print out hex version */
 483                 if (nid & TLSEXT_nid_unknown)
 484                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
 485                 else
 486                         {
 487                         /* Use NIST name for curve if it exists */
 488                         cname = EC_curve_nid2nist(nid);
 489                         if (!cname)
 490                                 cname = OBJ_nid2sn(nid);
 491                         BIO_printf(out, "%s", cname);
 492                         }
 493                 }
 494         if (ncurves == 0)
 495                 BIO_puts(out, "NONE");
 496         OPENSSL_free(curves);
 497         if (noshared)
 498                 {
 499                 BIO_puts(out, "\n");
 500                 return 1;
 501                 }
 502         BIO_puts(out, "\nShared Elliptic curves: ");
 503         ncurves = SSL_get_shared_curve(s, -1);
 504         for (i = 0; i < ncurves; i++)
 505                 {
 506                 if (i)
 507                         BIO_puts(out, ":");
 508                 nid = SSL_get_shared_curve(s, i);
 509                 cname = EC_curve_nid2nist(nid);
 510                 if (!cname)
 511                         cname = OBJ_nid2sn(nid);
 512                 BIO_printf(out, "%s", cname);
 513                 }
 514         if (ncurves == 0)
 515                 BIO_puts(out, "NONE");
 516         BIO_puts(out, "\n");
 517         return 1;
 518         }
 519 #endif
 520 int ssl_print_tmp_key(BIO *out, SSL *s)
 521         {
 522         EVP_PKEY *key;
 523         if (!SSL_get_server_tmp_key(s, &key))
 524                 return 1;
 525         BIO_puts(out, "Server Temp Key: ");
 526         switch (EVP_PKEY_id(key))
 527                 {
 528         case EVP_PKEY_RSA:
 529                 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
 530                 break;
 531
 532         case EVP_PKEY_DH:
 533                 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
 534                 break;
 535 #ifndef OPENSSL_NO_ECDH
 536         case EVP_PKEY_EC:
 537                         {
 538                         EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
 539                         int nid;
 540                         const char *cname;
 541                         nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
 542                         EC_KEY_free(ec);
 543                         cname = EC_curve_nid2nist(nid);
 544                         if (!cname)
 545                                 cname = OBJ_nid2sn(nid);
 546                         BIO_printf(out, "ECDH, %s, %d bits\n",
 547                                                 cname, EVP_PKEY_bits(key));
 548                         }
 549 #endif
 550                 }
 551         EVP_PKEY_free(key);
 552         return 1;
 553         }
 554
 555
 556 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 557                                    int argi, long argl, long ret)
 558         {
 559         BIO *out;
 560
 561         out=(BIO *)BIO_get_callback_arg(bio);
 562         if (out == NULL) return(ret);
 563
 564         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 565                 {
 566                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
 567                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 568                 BIO_dump(out,argp,(int)ret);
 569                 return(ret);
 570                 }
 571         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 572                 {
 573                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
 574                         (void *)bio,argp,(unsigned long)argi,ret,ret);
 575                 BIO_dump(out,argp,(int)ret);
 576                 }
 577         return(ret);
 578         }
 579
 580 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 581         {
 582         const char *str;
 583         int w;
 584
 585         w=where& ~SSL_ST_MASK;
 586
 587         if (w & SSL_ST_CONNECT) str="SSL_connect";
 588         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 589         else str="undefined";
 590
 591         if (where & SSL_CB_LOOP)
 592                 {
 593                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 594                 }
 595         else if (where & SSL_CB_ALERT)
 596                 {
 597                 str=(where & SSL_CB_READ)?"read":"write";
 598                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 599                         str,
 600                         SSL_alert_type_string_long(ret),
 601                         SSL_alert_desc_string_long(ret));
 602                 }
 603         else if (where & SSL_CB_EXIT)
 604                 {
 605                 if (ret == 0)
 606                         BIO_printf(bio_err,"%s:failed in %s\n",
 607                                 str,SSL_state_string_long(s));
 608                 else if (ret < 0)
 609                         {
 610                         BIO_printf(bio_err,"%s:error in %s\n",
 611                                 str,SSL_state_string_long(s));
 612                         }
 613                 }
 614         }
 615
 616
 617 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 618         {
 619         BIO *bio = arg;
 620         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 621
 622         str_write_p = write_p ? ">>>" : "<<<";
 623
 624         switch (version)
 625                 {
 626         case SSL2_VERSION:
 627                 str_version = "SSL 2.0";
 628                 break;
 629         case SSL3_VERSION:
 630                 str_version = "SSL 3.0 ";
 631                 break;
 632         case TLS1_VERSION:
 633                 str_version = "TLS 1.0 ";
 634                 break;
 635         case TLS1_1_VERSION:
 636                 str_version = "TLS 1.1 ";
 637                 break;
 638         case TLS1_2_VERSION:
 639                 str_version = "TLS 1.2 ";
 640                 break;
 641         case DTLS1_VERSION:
 642                 str_version = "DTLS 1.0 ";
 643                 break;
 644         case DTLS1_BAD_VER:
 645                 str_version = "DTLS 1.0 (bad) ";
 646                 break;
 647         default:
 648                 str_version = "???";
 649                 }
 650
 651         if (version == SSL2_VERSION)
 652                 {
 653                 str_details1 = "???";
 654
 655                 if (len > 0)
 656                         {
 657                         switch (((const unsigned char*)buf)[0])
 658                                 {
 659                                 case 0:
 660                                         str_details1 = ", ERROR:";
 661                                         str_details2 = " ???";
 662                                         if (len >= 3)
 663                                                 {
 664                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 665
 666                                                 switch (err)
 667                                                         {
 668                                                 case 0x0001:
 669                                                         str_details2 = " NO-CIPHER-ERROR";
 670                                                         break;
 671                                                 case 0x0002:
 672                                                         str_details2 = " NO-CERTIFICATE-ERROR";
 673                                                         break;
 674                                                 case 0x0004:
 675                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
 676                                                         break;
 677                                                 case 0x0006:
 678                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
 679                                                         break;
 680                                                         }
 681                                                 }
 682
 683                                         break;
 684                                 case 1:
 685                                         str_details1 = ", CLIENT-HELLO";
 686                                         break;
 687                                 case 2:
 688                                         str_details1 = ", CLIENT-MASTER-KEY";
 689                                         break;
 690                                 case 3:
 691                                         str_details1 = ", CLIENT-FINISHED";
 692                                         break;
 693                                 case 4:
 694                                         str_details1 = ", SERVER-HELLO";
 695                                         break;
 696                                 case 5:
 697                                         str_details1 = ", SERVER-VERIFY";
 698                                         break;
 699                                 case 6:
 700                                         str_details1 = ", SERVER-FINISHED";
 701                                         break;
 702                                 case 7:
 703                                         str_details1 = ", REQUEST-CERTIFICATE";
 704                                         break;
 705                                 case 8:
 706                                         str_details1 = ", CLIENT-CERTIFICATE";
 707                                         break;
 708                                 }
 709                         }
 710                 }
 711
 712         if (version == SSL3_VERSION ||
 713             version == TLS1_VERSION ||
 714             version == TLS1_1_VERSION ||
 715             version == TLS1_2_VERSION ||
 716             version == DTLS1_VERSION ||
 717             version == DTLS1_BAD_VER)
 718                 {
 719                 switch (content_type)
 720                         {
 721                 case 20:
 722                         str_content_type = "ChangeCipherSpec";
 723                         break;
 724                 case 21:
 725                         str_content_type = "Alert";
 726                         break;
 727                 case 22:
 728                         str_content_type = "Handshake";
 729                         break;
 730                         }
 731
 732                 if (content_type == 21) /* Alert */
 733                         {
 734                         str_details1 = ", ???";
 735
 736                         if (len == 2)
 737                                 {
 738                                 switch (((const unsigned char*)buf)[0])
 739                                         {
 740                                 case 1:
 741                                         str_details1 = ", warning";
 742                                         break;
 743                                 case 2:
 744                                         str_details1 = ", fatal";
 745                                         break;
 746                                         }
 747
 748                                 str_details2 = " ???";
 749                                 switch (((const unsigned char*)buf)[1])
 750                                         {
 751                                 case 0:
 752                                         str_details2 = " close_notify";
 753                                         break;
 754                                 case 10:
 755                                         str_details2 = " unexpected_message";
 756                                         break;
 757                                 case 20:
 758                                         str_details2 = " bad_record_mac";
 759                                         break;
 760                                 case 21:
 761                                         str_details2 = " decryption_failed";
 762                                         break;
 763                                 case 22:
 764                                         str_details2 = " record_overflow";
 765                                         break;
 766                                 case 30:
 767                                         str_details2 = " decompression_failure";
 768                                         break;
 769                                 case 40:
 770                                         str_details2 = " handshake_failure";
 771                                         break;
 772                                 case 42:
 773                                         str_details2 = " bad_certificate";
 774                                         break;
 775                                 case 43:
 776                                         str_details2 = " unsupported_certificate";
 777                                         break;
 778                                 case 44:
 779                                         str_details2 = " certificate_revoked";
 780                                         break;
 781                                 case 45:
 782                                         str_details2 = " certificate_expired";
 783                                         break;
 784                                 case 46:
 785                                         str_details2 = " certificate_unknown";
 786                                         break;
 787                                 case 47:
 788                                         str_details2 = " illegal_parameter";
 789                                         break;
 790                                 case 48:
 791                                         str_details2 = " unknown_ca";
 792                                         break;
 793                                 case 49:
 794                                         str_details2 = " access_denied";
 795                                         break;
 796                                 case 50:
 797                                         str_details2 = " decode_error";
 798                                         break;
 799                                 case 51:
 800                                         str_details2 = " decrypt_error";
 801                                         break;
 802                                 case 60:
 803                                         str_details2 = " export_restriction";
 804                                         break;
 805                                 case 70:
 806                                         str_details2 = " protocol_version";
 807                                         break;
 808                                 case 71:
 809                                         str_details2 = " insufficient_security";
 810                                         break;
 811                                 case 80:
 812                                         str_details2 = " internal_error";
 813                                         break;
 814                                 case 90:
 815                                         str_details2 = " user_canceled";
 816                                         break;
 817                                 case 100:
 818                                         str_details2 = " no_renegotiation";
 819                                         break;
 820                                 case 110:
 821                                         str_details2 = " unsupported_extension";
 822                                         break;
 823                                 case 111:
 824                                         str_details2 = " certificate_unobtainable";
 825                                         break;
 826                                 case 112:
 827                                         str_details2 = " unrecognized_name";
 828                                         break;
 829                                 case 113:
 830                                         str_details2 = " bad_certificate_status_response";
 831                                         break;
 832                                 case 114:
 833                                         str_details2 = " bad_certificate_hash_value";
 834                                         break;
 835                                 case 115:
 836                                         str_details2 = " unknown_psk_identity";
 837                                         break;
 838                                         }
 839                                 }
 840                         }
 841
 842                 if (content_type == 22) /* Handshake */
 843                         {
 844                         str_details1 = "???";
 845
 846                         if (len > 0)
 847                                 {
 848                                 switch (((const unsigned char*)buf)[0])
 849                                         {
 850                                 case 0:
 851                                         str_details1 = ", HelloRequest";
 852                                         break;
 853                                 case 1:
 854                                         str_details1 = ", ClientHello";
 855                                         break;
 856                                 case 2:
 857                                         str_details1 = ", ServerHello";
 858                                         break;
 859                                 case 3:
 860                                         str_details1 = ", HelloVerifyRequest";
 861                                         break;
 862                                 case 11:
 863                                         str_details1 = ", Certificate";
 864                                         break;
 865                                 case 12:
 866                                         str_details1 = ", ServerKeyExchange";
 867                                         break;
 868                                 case 13:
 869                                         str_details1 = ", CertificateRequest";
 870                                         break;
 871                                 case 14:
 872                                         str_details1 = ", ServerHelloDone";
 873                                         break;
 874                                 case 15:
 875                                         str_details1 = ", CertificateVerify";
 876                                         break;
 877                                 case 16:
 878                                         str_details1 = ", ClientKeyExchange";
 879                                         break;
 880                                 case 20:
 881                                         str_details1 = ", Finished";
 882                                         break;
 883                                 case 23:
 884                                         str_details1 = ", SupplementalData";
 885                                         break;
 886                                         }
 887                                 }
 888                         }
 889
 890 #ifndef OPENSSL_NO_HEARTBEATS
 891                 if (content_type == 24) /* Heartbeat */
 892                         {
 893                         str_details1 = ", Heartbeat";
 894
 895                         if (len > 0)
 896                                 {
 897                                 switch (((const unsigned char*)buf)[0])
 898                                         {
 899                                 case 1:
 900                                         str_details1 = ", HeartbeatRequest";
 901                                         break;
 902                                 case 2:
 903                                         str_details1 = ", HeartbeatResponse";
 904                                         break;
 905                                         }
 906                                 }
 907                         }
 908 #endif
 909                 }
 910
 911         BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, str_content_type, (unsigned long)len, str_details1, str_details2);
 912
 913         if (len > 0)
 914                 {
 915                 size_t num, i;
 916
 917                 BIO_printf(bio, "   ");
 918                 num = len;
 919 #if 0
 920                 if (num > 16)
 921                         num = 16;
 922 #endif
 923                 for (i = 0; i < num; i++)
 924                         {
 925                         if (i % 16 == 0 && i > 0)
 926                                 BIO_printf(bio, "\n   ");
 927                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 928                         }
 929                 if (i < len)
 930                         BIO_printf(bio, " ...");
 931                 BIO_printf(bio, "\n");
 932                 }
 933         (void)BIO_flush(bio);
 934         }
 935
 936 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
 937                                         unsigned char *data, int len,
 938                                         void *arg)
 939         {
 940         BIO *bio = arg;
 941         char *extname;
 942
 943         switch(type)
 944                 {
 945                 case TLSEXT_TYPE_server_name:
 946                 extname = "server name";
 947                 break;
 948
 949                 case TLSEXT_TYPE_max_fragment_length:
 950                 extname = "max fragment length";
 951                 break;
 952
 953                 case TLSEXT_TYPE_client_certificate_url:
 954                 extname = "client certificate URL";
 955                 break;
 956
 957                 case TLSEXT_TYPE_trusted_ca_keys:
 958                 extname = "trusted CA keys";
 959                 break;
 960
 961                 case TLSEXT_TYPE_truncated_hmac:
 962                 extname = "truncated HMAC";
 963                 break;
 964
 965                 case TLSEXT_TYPE_status_request:
 966                 extname = "status request";
 967                 break;
 968
 969                 case TLSEXT_TYPE_user_mapping:
 970                 extname = "user mapping";
 971                 break;
 972
 973                 case TLSEXT_TYPE_client_authz:
 974                 extname = "client authz";
 975                 break;
 976
 977                 case TLSEXT_TYPE_server_authz:
 978                 extname = "server authz";
 979                 break;
 980
 981                 case TLSEXT_TYPE_cert_type:
 982                 extname = "cert type";
 983                 break;
 984
 985                 case TLSEXT_TYPE_elliptic_curves:
 986                 extname = "elliptic curves";
 987                 break;
 988
 989                 case TLSEXT_TYPE_ec_point_formats:
 990                 extname = "EC point formats";
 991                 break;
 992
 993                 case TLSEXT_TYPE_srp:
 994                 extname = "SRP";
 995                 break;
 996
 997                 case TLSEXT_TYPE_signature_algorithms:
 998                 extname = "signature algorithms";
 999                 break;
1000
1001                 case TLSEXT_TYPE_use_srtp:
1002                 extname = "use SRTP";
1003                 break;
1004
1005                 case TLSEXT_TYPE_heartbeat:
1006                 extname = "heartbeat";
1007                 break;
1008
1009                 case TLSEXT_TYPE_session_ticket:
1010                 extname = "session ticket";
1011                 break;
1012
1013                 case TLSEXT_TYPE_renegotiate:
1014                 extname = "renegotiation info";
1015                 break;
1016
1017 #ifdef TLSEXT_TYPE_opaque_prf_input
1018                 case TLSEXT_TYPE_opaque_prf_input:
1019                 extname = "opaque PRF input";
1020                 break;
1021 #endif
1022 #ifdef TLSEXT_TYPE_next_proto_neg
1023                 case TLSEXT_TYPE_next_proto_neg:
1024                 extname = "next protocol";
1025                 break;
1026 #endif
1027 #ifdef TLSEXT_TYPE_encrypt_then_mac
1028                 case TLSEXT_TYPE_encrypt_then_mac:
1029                 extname = "encrypt-then-mac";
1030                 break;
1031 #endif
1032
1033                 default:
1034                 extname = "unknown";
1035                 break;
1036
1037                 }
1038
1039         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1040                         client_server ? "server": "client",
1041                         extname, type, len);
1042         BIO_dump(bio, (char *)data, len);
1043         (void)BIO_flush(bio);
1044         }
1045
1046 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1047         {
1048         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1049         unsigned int length, resultlength;
1050         union {
1051                 struct sockaddr sa;
1052                 struct sockaddr_in s4;
1053 #if OPENSSL_USE_IPV6
1054                 struct sockaddr_in6 s6;
1055 #endif
1056         } peer;
1057
1058         /* Initialize a random secret */
1059         if (!cookie_initialized)
1060                 {
1061                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1062                         {
1063                         BIO_printf(bio_err,"error setting random cookie secret\n");
1064                         return 0;
1065                         }
1066                 cookie_initialized = 1;
1067                 }
1068
1069         /* Read peer information */
1070         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1071
1072         /* Create buffer with peer's address and port */
1073         length = 0;
1074         switch (peer.sa.sa_family)
1075                 {
1076         case AF_INET:
1077                 length += sizeof(struct in_addr);
1078                 length += sizeof(peer.s4.sin_port);
1079                 break;
1080 #if OPENSSL_USE_IPV6
1081         case AF_INET6:
1082                 length += sizeof(struct in6_addr);
1083                 length += sizeof(peer.s6.sin6_port);
1084                 break;
1085 #endif
1086         default:
1087                 OPENSSL_assert(0);
1088                 break;
1089                 }
1090         buffer = OPENSSL_malloc(length);
1091
1092         if (buffer == NULL)
1093                 {
1094                 BIO_printf(bio_err,"out of memory\n");
1095                 return 0;
1096                 }
1097
1098         switch (peer.sa.sa_family)
1099                 {
1100         case AF_INET:
1101                 memcpy(buffer,
1102                        &peer.s4.sin_port,
1103                        sizeof(peer.s4.sin_port));
1104                 memcpy(buffer + sizeof(peer.s4.sin_port),
1105                        &peer.s4.sin_addr,
1106                        sizeof(struct in_addr));
1107                 break;
1108 #if OPENSSL_USE_IPV6
1109         case AF_INET6:
1110                 memcpy(buffer,
1111                        &peer.s6.sin6_port,
1112                        sizeof(peer.s6.sin6_port));
1113                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1114                        &peer.s6.sin6_addr,
1115                        sizeof(struct in6_addr));
1116                 break;
1117 #endif
1118         default:
1119                 OPENSSL_assert(0);
1120                 break;
1121                 }
1122
1123         /* Calculate HMAC of buffer using the secret */
1124         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1125              buffer, length, result, &resultlength);
1126         OPENSSL_free(buffer);
1127
1128         memcpy(cookie, result, resultlength);
1129         *cookie_len = resultlength;
1130
1131         return 1;
1132         }
1133
1134 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1135         {
1136         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1137         unsigned int length, resultlength;
1138         union {
1139                 struct sockaddr sa;
1140                 struct sockaddr_in s4;
1141 #if OPENSSL_USE_IPV6
1142                 struct sockaddr_in6 s6;
1143 #endif
1144         } peer;
1145
1146         /* If secret isn't initialized yet, the cookie can't be valid */
1147         if (!cookie_initialized)
1148                 return 0;
1149
1150         /* Read peer information */
1151         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1152
1153         /* Create buffer with peer's address and port */
1154         length = 0;
1155         switch (peer.sa.sa_family)
1156                 {
1157         case AF_INET:
1158                 length += sizeof(struct in_addr);
1159                 length += sizeof(peer.s4.sin_port);
1160                 break;
1161 #if OPENSSL_USE_IPV6
1162         case AF_INET6:
1163                 length += sizeof(struct in6_addr);
1164                 length += sizeof(peer.s6.sin6_port);
1165                 break;
1166 #endif
1167         default:
1168                 OPENSSL_assert(0);
1169                 break;
1170                 }
1171         buffer = OPENSSL_malloc(length);
1172
1173         if (buffer == NULL)
1174                 {
1175                 BIO_printf(bio_err,"out of memory\n");
1176                 return 0;
1177                 }
1178
1179         switch (peer.sa.sa_family)
1180                 {
1181         case AF_INET:
1182                 memcpy(buffer,
1183                        &peer.s4.sin_port,
1184                        sizeof(peer.s4.sin_port));
1185                 memcpy(buffer + sizeof(peer.s4.sin_port),
1186                        &peer.s4.sin_addr,
1187                        sizeof(struct in_addr));
1188                 break;
1189 #if OPENSSL_USE_IPV6
1190         case AF_INET6:
1191                 memcpy(buffer,
1192                        &peer.s6.sin6_port,
1193                        sizeof(peer.s6.sin6_port));
1194                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1195                        &peer.s6.sin6_addr,
1196                        sizeof(struct in6_addr));
1197                 break;
1198 #endif
1199         default:
1200                 OPENSSL_assert(0);
1201                 break;
1202                 }
1203
1204         /* Calculate HMAC of buffer using the secret */
1205         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1206              buffer, length, result, &resultlength);
1207         OPENSSL_free(buffer);
1208
1209         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1210                 return 1;
1211
1212         return 0;
1213         }
1214
1215 /* Example of extended certificate handling. Where the standard support
1216  * of one certificate per algorithm is not sufficient an application
1217  * can decide which certificate(s) to use at runtime based on whatever
1218  * criteria it deems appropriate.
1219  */
1220
1221 /* Linked list of certificates, keys and chains */
1222 struct  ssl_excert_st
1223         {
1224         int certform;
1225         const char *certfile;
1226         int keyform;
1227         const char *keyfile;
1228         const char *chainfile;
1229         X509 *cert;
1230         EVP_PKEY *key;
1231         STACK_OF(X509) *chain;
1232         int build_chain;
1233         struct ssl_excert_st *next, *prev;
1234         };
1235
1236 struct chain_flags
1237         {
1238         int flag;
1239         const char *name;
1240         };
1241
1242 struct chain_flags chain_flags_list[] =
1243         {
1244                 {CERT_PKEY_VALID, "Overall Validity"},
1245                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1246                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1247                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1248                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1249                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1250                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1251                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1252                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1253                 {0, NULL}
1254         };
1255
1256
1257 static void print_chain_flags(BIO *out, int flags)
1258         {
1259         struct chain_flags *ctmp = chain_flags_list;
1260         while(ctmp->name)
1261                 {
1262                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1263                                 flags & ctmp->flag ? "OK" : "NOT OK");
1264                 ctmp++;
1265                 }
1266         }
1267
1268 /* Very basic selection callback: just use any certificate chain
1269  * reported as valid. More sophisticated could prioritise according
1270  * to local policy.
1271  */
1272 static int set_cert_cb(SSL *ssl, void *arg)
1273         {
1274         int i, rv;
1275         SSL_EXCERT *exc = arg;
1276 #ifdef CERT_CB_TEST_RETRY
1277         static int retry_cnt;
1278         if (retry_cnt < 5)
1279                 {
1280                 retry_cnt++;
1281                 fprintf(stderr, "Certificate callback retry test: count %d\n",
1282                                                                 retry_cnt);
1283                 return -1;
1284                 }
1285 #endif
1286         SSL_certs_clear(ssl);
1287
1288         if (!exc)
1289                 return 1;
1290
1291         /* Go to end of list and traverse backwards since we prepend
1292          * newer entries this retains the original order.
1293          */
1294         while (exc->next)
1295                 exc = exc->next;
1296
1297         i = 0;
1298
1299         while(exc)
1300                 {
1301                 i++;
1302                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1303                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1304                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1305                                                         XN_FLAG_ONELINE);
1306                 BIO_puts(bio_err, "\n");
1307
1308                 print_chain_flags(bio_err, rv);
1309                 if (rv & CERT_PKEY_VALID)
1310                         {
1311                         SSL_use_certificate(ssl, exc->cert);
1312                         SSL_use_PrivateKey(ssl, exc->key);
1313                         /* NB: we wouldn't normally do this as it is
1314                          * not efficient building chains on each connection
1315                          * better to cache the chain in advance.
1316                          */
1317                         if (exc->build_chain)
1318                                 {
1319                                 if (!SSL_build_cert_chain(ssl, 0))
1320                                         return 0;
1321                                 }
1322                         else if (exc->chain)
1323                                 SSL_set1_chain(ssl, exc->chain);
1324                         }
1325                 exc = exc->prev;
1326                 }
1327         return 1;
1328         }
1329
1330 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1331         {
1332         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1333         }
1334
1335 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1336         {
1337         SSL_EXCERT *exc;
1338         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1339         if (!exc)
1340                 return 0;
1341         exc->certfile = NULL;
1342         exc->keyfile = NULL;
1343         exc->chainfile = NULL;
1344         exc->cert = NULL;
1345         exc->key = NULL;
1346         exc->chain = NULL;
1347         exc->prev = NULL;
1348         exc->build_chain = 0;
1349
1350         exc->next = *pexc;
1351         *pexc = exc;
1352
1353         if (exc->next)
1354                 {
1355                 exc->certform = exc->next->certform;
1356                 exc->keyform = exc->next->keyform;
1357                 exc->next->prev = exc;
1358                 }
1359         else
1360                 {
1361                 exc->certform = FORMAT_PEM;
1362                 exc->keyform = FORMAT_PEM;
1363                 }
1364         return 1;
1365
1366         }
1367
1368 void ssl_excert_free(SSL_EXCERT *exc)
1369         {
1370         SSL_EXCERT *curr;
1371         while (exc)
1372                 {
1373                 if (exc->cert)
1374                         X509_free(exc->cert);
1375                 if (exc->key)
1376                         EVP_PKEY_free(exc->key);
1377                 if (exc->chain)
1378                         sk_X509_pop_free(exc->chain, X509_free);
1379                 curr = exc;
1380                 exc = exc->next;
1381                 OPENSSL_free(curr);
1382                 }
1383         }
1384
1385 int load_excert(SSL_EXCERT **pexc, BIO *err)
1386         {
1387         SSL_EXCERT *exc = *pexc;
1388         if (!exc)
1389                 return 1;
1390         /* If nothing in list, free and set to NULL */
1391         if (!exc->certfile && !exc->next)
1392                 {
1393                 ssl_excert_free(exc);
1394                 *pexc = NULL;
1395                 return 1;
1396                 }
1397         for(; exc; exc=exc->next)
1398                 {
1399                 if (!exc->certfile)
1400                         {
1401                         BIO_printf(err, "Missing filename\n");
1402                         return 0;
1403                         }
1404                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1405                                         NULL, NULL, "Server Certificate");
1406                 if (!exc->cert)
1407                         return 0;
1408                 if (exc->keyfile)
1409                         exc->keyfile = exc->certfile;
1410                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1411                                         NULL, NULL, "Server Certificate");
1412                 if (!exc->key)
1413                         return 0;
1414                 if (exc->chainfile)
1415                         {
1416                         exc->chain = load_certs(err,
1417                                                 exc->chainfile, FORMAT_PEM,
1418                                                 NULL, NULL,
1419                                                 "Server Chain");
1420                         if (!exc->chainfile)
1421                                 return 0;
1422                         }
1423                 }
1424         return 1;
1425         }
1426
1427
1428 int args_excert(char ***pargs, int *pargc,
1429                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1430         {
1431         char *arg = **pargs, *argn = (*pargs)[1];
1432         SSL_EXCERT *exc = *pexc;
1433         int narg = 2;
1434         if (!exc)
1435                 {
1436                 if (ssl_excert_prepend(&exc))
1437                         *pexc = exc;
1438                 else
1439                         {
1440                         BIO_printf(err, "Error initialising xcert\n");
1441                         *badarg = 1;
1442                         goto err;
1443                         }
1444                 }
1445         if (strcmp(arg, "-xcert") == 0)
1446                 {
1447                 if (!argn)
1448                         {
1449                         *badarg = 1;
1450                         return 1;
1451                         }
1452                 if (exc->certfile && !ssl_excert_prepend(&exc))
1453                         {
1454                         BIO_printf(err, "Error adding xcert\n");
1455                         *badarg = 1;
1456                         goto err;
1457                         }
1458                 exc->certfile = argn;
1459                 }
1460         else if (strcmp(arg,"-xkey") == 0)
1461                 {
1462                 if (!argn)
1463                         {
1464                         *badarg = 1;
1465                         return 1;
1466                         }
1467                 if (exc->keyfile)
1468                         {
1469                         BIO_printf(err, "Key already specified\n");
1470                         *badarg = 1;
1471                         return 1;
1472                         }
1473                 exc->keyfile = argn;
1474                 }
1475         else if (strcmp(arg,"-xchain") == 0)
1476                 {
1477                 if (!argn)
1478                         {
1479                         *badarg = 1;
1480                         return 1;
1481                         }
1482                 if (exc->chainfile)
1483                         {
1484                         BIO_printf(err, "Chain already specified\n");
1485                         *badarg = 1;
1486                         return 1;
1487                         }
1488                 exc->chainfile = argn;
1489                 }
1490         else if (strcmp(arg,"-xchain_build") == 0)
1491                 {
1492                 narg = 1;
1493                 exc->build_chain = 1;
1494                 }
1495         else if (strcmp(arg,"-xcertform") == 0)
1496                 {
1497                 if (!argn)
1498                         {
1499                         *badarg = 1;
1500                         goto err;
1501                         }
1502                 exc->certform = str2fmt(argn);
1503                 }
1504         else if (strcmp(arg,"-xkeyform") == 0)
1505                 {
1506                 if (!argn)
1507                         {
1508                         *badarg = 1;
1509                         goto err;
1510                         }
1511                 exc->keyform = str2fmt(argn);
1512                 }
1513         else
1514                 return 0;
1515
1516         (*pargs) += narg;
1517
1518         if (pargc)
1519                 *pargc -= narg;
1520
1521         *pexc = exc;
1522
1523         return 1;
1524
1525         err:
1526         ERR_print_errors(err);
1527         ssl_excert_free(exc);
1528         *pexc = NULL;
1529         return 1;
1530         }
1531
1532 static void print_raw_cipherlist(BIO *bio, SSL *s)
1533         {
1534         const unsigned char *rlist;
1535         static const unsigned char scsv_id[] = {0, 0, 0xFF};
1536         size_t i, rlistlen, num;
1537         if (!SSL_is_server(s))
1538                 return;
1539         num = SSL_get0_raw_cipherlist(s, NULL);
1540         rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1541         BIO_puts(bio, "Client cipher list: ");
1542         for (i = 0; i < rlistlen; i += num, rlist += num)
1543                 {
1544                 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1545                 if (i)
1546                         BIO_puts(bio, ":");
1547                 if (c)
1548                         BIO_puts(bio, SSL_CIPHER_get_name(c));
1549                 else if (!memcmp(rlist, scsv_id - num + 3, num))
1550                         BIO_puts(bio, "SCSV");
1551                 else
1552                         {
1553                         size_t j;
1554                         BIO_puts(bio, "0x");
1555                         for (j = 0; j < num; j++)
1556                                 BIO_printf(bio, "%02X", rlist[j]);
1557                         }
1558                 }
1559         BIO_puts(bio, "\n");
1560         }
1561
1562
1563 void print_ssl_summary(BIO *bio, SSL *s)
1564         {
1565         const SSL_CIPHER *c;
1566         X509 *peer;
1567         /*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
1568         BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
1569         print_raw_cipherlist(bio, s);
1570         c = SSL_get_current_cipher(s);
1571         BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1572         do_print_sigalgs(bio, s, 0);
1573         peer = SSL_get_peer_certificate(s);
1574         if (peer)
1575                 {
1576                 int nid;
1577                 BIO_puts(bio, "Peer certificate: ");
1578                 X509_NAME_print_ex(bio, X509_get_subject_name(peer),
1579                                         0, XN_FLAG_ONELINE);
1580                 BIO_puts(bio, "\n");
1581                 if (SSL_get_peer_signature_nid(s, &nid))
1582                         BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
1583                 }
1584         else
1585                 BIO_puts(bio, "No peer certificate\n");
1586         if (peer)
1587                 X509_free(peer);
1588 #ifndef OPENSSL_NO_EC
1589         ssl_print_point_formats(bio, s);
1590         if (SSL_is_server(s))
1591                 ssl_print_curves(bio, s, 1);
1592         else
1593                 ssl_print_tmp_key(bio, s);
1594 #else
1595         if (!SSL_is_server(s))
1596                 ssl_print_tmp_key(bio, s);
1597 #endif
1598         }
1599
1600 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1601                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1602         {
1603         char *arg = **pargs, *argn = (*pargs)[1];
1604         int rv;
1605
1606         /* Attempt to run SSL configuration command */
1607         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1608         /* If parameter not recognised just return */
1609         if (rv == 0)
1610                 return 0;
1611         /* see if missing argument error */
1612         if (rv == -3)
1613                 {
1614                 BIO_printf(err, "%s needs an argument\n", arg);
1615                 *badarg = 1;
1616                 goto end;
1617                 }
1618         /* Check for some other error */
1619         if (rv < 0)
1620                 {
1621                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1622                                                 arg, argn ? argn : "");
1623                 *badarg = 1;
1624                 goto end;
1625                 }
1626         /* Store command and argument */
1627         /* If only one argument processed store value as NULL */
1628         if (rv == 1)
1629                 argn = NULL;
1630         if (!*pstr)
1631                 *pstr = sk_OPENSSL_STRING_new_null();
1632         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1633                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1634                 {
1635                 BIO_puts(err, "Memory allocation failure\n");
1636                 goto end;
1637                 }
1638
1639         end:
1640         if (*badarg)
1641                 ERR_print_errors(err);
1642
1643         return 1;
1644         }
1645
1646 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1647                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1648         {
1649         int i;
1650         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1651         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1652                 {
1653                 const char *param = sk_OPENSSL_STRING_value(str, i);
1654                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1655                 /* If no_ecdhe or named curve already specified don't need
1656                  * a default.
1657                  */
1658                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1659                         no_ecdhe = 1;
1660 #ifndef OPENSSL_NO_JPAKE
1661                 if (!no_jpake && !strcmp(param, "-cipher"))
1662                         {
1663                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1664                         return 0;
1665                         }
1666 #endif
1667                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1668                         {
1669                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1670                                                 param, value ? value : "");
1671                         ERR_print_errors(err);
1672                         return 0;
1673                         }
1674                 }
1675         /* This is a special case to keep existing s_server functionality:
1676          * if we don't have any curve specified *and* we haven't disabled
1677          * ECDHE then use P-256.
1678          */
1679         if (!no_ecdhe)
1680                 {
1681                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1682                         {
1683                         BIO_puts(err, "Error setting EC curve\n");
1684                         ERR_print_errors(err);
1685                         return 0;
1686                         }
1687                 }
1688 #ifndef OPENSSL_NO_JPAKE
1689         if (!no_jpake)
1690                 {
1691                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1692                         {
1693                         BIO_puts(err, "Error setting cipher to PSK\n");
1694                         ERR_print_errors(err);
1695                         return 0;
1696                         }
1697                 }
1698 #endif
1699         if (!SSL_CONF_CTX_finish(cctx))
1700                 {
1701                 BIO_puts(err, "Error finishing context\n");
1702                 ERR_print_errors(err);
1703                 return 0;
1704                 }
1705         return 1;
1706         }
1707
1708 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1709         {
1710         X509_CRL *crl;
1711         int i;
1712         for (i = 0; i < sk_X509_CRL_num(crls); i++)
1713                 {
1714                 crl = sk_X509_CRL_value(crls, i);
1715                 X509_STORE_add_crl(st, crl);
1716                 }
1717         return 1;
1718         }
1719
1720 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1721         {
1722         X509_STORE *st;
1723         st = SSL_CTX_get_cert_store(ctx);
1724         add_crls_store(st, crls);
1725         if (crl_download)
1726                 store_setup_crl_download(st);
1727         return 1;
1728         }
1729
1730 int ssl_load_stores(SSL_CTX *ctx,
1731                         const char *vfyCApath, const char *vfyCAfile,
1732                         const char *chCApath, const char *chCAfile,
1733                         STACK_OF(X509_CRL) *crls, int crl_download)
1734         {
1735         X509_STORE *vfy = NULL, *ch = NULL;
1736         int rv = 0;
1737         if (vfyCApath || vfyCAfile)
1738                 {
1739                 vfy = X509_STORE_new();
1740                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1741                         goto err;
1742                 add_crls_store(vfy, crls);
1743                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1744                 if (crl_download)
1745                         store_setup_crl_download(vfy);
1746                 }
1747         if (chCApath || chCAfile)
1748                 {
1749                 ch = X509_STORE_new();
1750                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1751                         goto err;
1752                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1753                 }
1754         rv = 1;
1755         err:
1756         if (vfy)
1757                 X509_STORE_free(vfy);
1758         if (ch)
1759                 X509_STORE_free(ch);
1760         return rv;
1761         }