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) 1998-2001 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/x509.h>
 121 #include <openssl/ssl.h>
 122 #include "s_apps.h"
 123
 124 int verify_depth=0;
 125 int verify_error=X509_V_OK;
 126
 127 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
 128         {
 129         char buf[256];
 130         X509 *err_cert;
 131         int err,depth;
 132
 133         err_cert=X509_STORE_CTX_get_current_cert(ctx);
 134         err=    X509_STORE_CTX_get_error(ctx);
 135         depth=  X509_STORE_CTX_get_error_depth(ctx);
 136
 137         X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256);
 138         BIO_printf(bio_err,"depth=%d %s\n",depth,buf);
 139         if (!ok)
 140                 {
 141                 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
 142                         X509_verify_cert_error_string(err));
 143                 if (verify_depth >= depth)
 144                         {
 145                         ok=1;
 146                         verify_error=X509_V_OK;
 147                         }
 148                 else
 149                         {
 150                         ok=0;
 151                         verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
 152                         }
 153                 }
 154         switch (ctx->error)
 155                 {
 156         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
 157                 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,256);
 158                 BIO_printf(bio_err,"issuer= %s\n",buf);
 159                 break;
 160         case X509_V_ERR_CERT_NOT_YET_VALID:
 161         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
 162                 BIO_printf(bio_err,"notBefore=");
 163                 ASN1_TIME_print(bio_err,X509_get_notBefore(ctx->current_cert));
 164                 BIO_printf(bio_err,"\n");
 165                 break;
 166         case X509_V_ERR_CERT_HAS_EXPIRED:
 167         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
 168                 BIO_printf(bio_err,"notAfter=");
 169                 ASN1_TIME_print(bio_err,X509_get_notAfter(ctx->current_cert));
 170                 BIO_printf(bio_err,"\n");
 171                 break;
 172                 }
 173         BIO_printf(bio_err,"verify return:%d\n",ok);
 174         return(ok);
 175         }
 176
 177 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
 178         {
 179         if (cert_file != NULL)
 180                 {
 181                 /*
 182                 SSL *ssl;
 183                 X509 *x509;
 184                 */
 185
 186                 if (SSL_CTX_use_certificate_file(ctx,cert_file,
 187                         SSL_FILETYPE_PEM) <= 0)
 188                         {
 189                         BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
 190                         ERR_print_errors(bio_err);
 191                         return(0);
 192                         }
 193                 if (key_file == NULL) key_file=cert_file;
 194                 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
 195                         SSL_FILETYPE_PEM) <= 0)
 196                         {
 197                         BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
 198                         ERR_print_errors(bio_err);
 199                         return(0);
 200                         }
 201
 202                 /*
 203                 In theory this is no longer needed
 204                 ssl=SSL_new(ctx);
 205                 x509=SSL_get_certificate(ssl);
 206
 207                 if (x509 != NULL) {
 208                         EVP_PKEY *pktmp;
 209                         pktmp = X509_get_pubkey(x509);
 210                         EVP_PKEY_copy_parameters(pktmp,
 211                                                 SSL_get_privatekey(ssl));
 212                         EVP_PKEY_free(pktmp);
 213                 }
 214                 SSL_free(ssl);
 215                 */
 216
 217                 /* If we are using DSA, we can copy the parameters from
 218                  * the private key */
 219
 220
 221                 /* Now we know that a key and cert have been set against
 222                  * the SSL context */
 223                 if (!SSL_CTX_check_private_key(ctx))
 224                         {
 225                         BIO_printf(bio_err,"Private key does not match the certificate public key\n");
 226                         return(0);
 227                         }
 228                 }
 229         return(1);
 230         }
 231
 232 long MS_CALLBACK bio_dump_cb(BIO *bio, int cmd, const char *argp, int argi,
 233              long argl, long ret)
 234         {
 235         BIO *out;
 236
 237         out=(BIO *)BIO_get_callback_arg(bio);
 238         if (out == NULL) return(ret);
 239
 240         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 241                 {
 242                 BIO_printf(out,"read from %08X [%08lX] (%d bytes => %ld (0x%X))\n",
 243                         bio,argp,argi,ret,ret);
 244                 BIO_dump(out,argp,(int)ret);
 245                 return(ret);
 246                 }
 247         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 248                 {
 249                 BIO_printf(out,"write to %08X [%08lX] (%d bytes => %ld (0x%X))\n",
 250                         bio,argp,argi,ret,ret);
 251                 BIO_dump(out,argp,(int)ret);
 252                 }
 253         return(ret);
 254         }
 255
 256 void MS_CALLBACK apps_ssl_info_callback(SSL *s, int where, int ret)
 257         {
 258         char *str;
 259         int w;
 260
 261         w=where& ~SSL_ST_MASK;
 262
 263         if (w & SSL_ST_CONNECT) str="SSL_connect";
 264         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
 265         else str="undefined";
 266
 267         if (where & SSL_CB_LOOP)
 268                 {
 269                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
 270                 }
 271         else if (where & SSL_CB_ALERT)
 272                 {
 273                 str=(where & SSL_CB_READ)?"read":"write";
 274                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
 275                         str,
 276                         SSL_alert_type_string_long(ret),
 277                         SSL_alert_desc_string_long(ret));
 278                 }
 279         else if (where & SSL_CB_EXIT)
 280                 {
 281                 if (ret == 0)
 282                         BIO_printf(bio_err,"%s:failed in %s\n",
 283                                 str,SSL_state_string_long(s));
 284                 else if (ret < 0)
 285                         {
 286                         BIO_printf(bio_err,"%s:error in %s\n",
 287                                 str,SSL_state_string_long(s));
 288                         }
 289                 }
 290         }
 291
 292
 293 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
 294         {
 295         BIO *bio = arg;
 296         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
 297
 298         str_write_p = write_p ? ">>>" : "<<<";
 299
 300         switch (version)
 301                 {
 302         case SSL2_VERSION:
 303                 str_version = "SSL 2.0";
 304                 break;
 305         case SSL3_VERSION:
 306                 str_version = "SSL 3.0 ";
 307                 break;
 308         case TLS1_VERSION:
 309                 str_version = "TLS 1.0 ";
 310                 break;
 311         default:
 312                 str_version = "???";
 313                 }
 314
 315         if (version == SSL3_VERSION || version == TLS1_VERSION)
 316                 {
 317                 switch (content_type)
 318                         {
 319                 case 20:
 320                         str_content_type = "ChangeCipherSpec";
 321                         break;
 322                 case 21:
 323                         str_content_type = "Alert";
 324                         break;
 325                 case 22:
 326                         str_content_type = "Handshake";
 327                         break;
 328                         }
 329
 330                 if (content_type == 21) /* Alert */
 331                         {
 332                         str_details1 = ", ???";
 333
 334                         if (len == 2)
 335                                 {
 336                                 switch (((unsigned char*)buf)[0])
 337                                         {
 338                                 case 1:
 339                                         str_details1 = ", warning";
 340                                         break;
 341                                 case 2:
 342                                         str_details1 = ", fatal";
 343                                         break;
 344                                         }
 345
 346                                 str_details2 = " ???";
 347                                 switch (((unsigned char*)buf)[1])
 348                                         {
 349                                 case 0:
 350                                         str_details2 = " close_notify";
 351                                         break;
 352                                 case 10:
 353                                         str_details2 = " unexpected_message";
 354                                         break;
 355                                 case 20:
 356                                         str_details2 = " bad_record_mac";
 357                                         break;
 358                                 case 21:
 359                                         str_details2 = " decryption_failed";
 360                                         break;
 361                                 case 22:
 362                                         str_details2 = " record_overflow";
 363                                         break;
 364                                 case 30:
 365                                         str_details2 = " decompression_failure";
 366                                         break;
 367                                 case 40:
 368                                         str_details2 = " handshake_failure";
 369                                         break;
 370                                 case 42:
 371                                         str_details2 = " bad_certificate";
 372                                         break;
 373                                 case 43:
 374                                         str_details2 = " unsupported_certificate";
 375                                         break;
 376                                 case 44:
 377                                         str_details2 = " certificate_revoked";
 378                                         break;
 379                                 case 45:
 380                                         str_details2 = " certificate_expired";
 381                                         break;
 382                                 case 46:
 383                                         str_details2 = " certificate_unknown";
 384                                         break;
 385                                 case 47:
 386                                         str_details2 = " illegal_parameter";
 387                                         break;
 388                                 case 48:
 389                                         str_details2 = " unknown_ca";
 390                                         break;
 391                                 case 49:
 392                                         str_details2 = " access_denied";
 393                                         break;
 394                                 case 50:
 395                                         str_details2 = " decode_error";
 396                                         break;
 397                                 case 51:
 398                                         str_details2 = " decrypt_error";
 399                                         break;
 400                                 case 60:
 401                                         str_details2 = " export_restriction";
 402                                         break;
 403                                 case 70:
 404                                         str_details2 = " protocol_version";
 405                                         break;
 406                                 case 71:
 407                                         str_details2 = " insufficient_security";
 408                                         break;
 409                                 case 80:
 410                                         str_details2 = " internal_error";
 411                                         break;
 412                                 case 90:
 413                                         str_details2 = " user_canceled";
 414                                         break;
 415                                 case 100:
 416                                         str_details2 = " no_renegotiation";
 417                                         break;
 418                                         }
 419                                 }
 420                         }
 421
 422                 if (content_type == 22) /* Handshake */
 423                         {
 424                         str_details1 = "???";
 425
 426                         if (len > 0)
 427                                 {
 428                                 switch (((unsigned char*)buf)[0])
 429                                         {
 430                                 case 0:
 431                                         str_details1 = ", HelloRequest";
 432                                         break;
 433                                 case 1:
 434                                         str_details1 = ", ClientHello";
 435                                         break;
 436                                 case 2:
 437                                         str_details1 = ", ServerHello";
 438                                         break;
 439                                 case 11:
 440                                         str_details1 = ", Certificate";
 441                                         break;
 442                                 case 12:
 443                                         str_details1 = ", ServerKeyExchange";
 444                                         break;
 445                                 case 13:
 446                                         str_details1 = ", CertificateRequest";
 447                                         break;
 448                                 case 14:
 449                                         str_details1 = ", ServerHelloDone";
 450                                         break;
 451                                 case 15:
 452                                         str_details1 = ", CertificateVerify";
 453                                         break;
 454                                 case 16:
 455                                         str_details1 = ", ClientKeyExchange";
 456                                         break;
 457                                 case 20:
 458                                         str_details1 = ", Finished";
 459                                         break;
 460                                         }
 461                                 }
 462                         }
 463                 }
 464
 465         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);
 466
 467         if (len > 0)
 468                 {
 469                 size_t num, i;
 470
 471                 BIO_printf(bio, "   ");
 472                 num = len;
 473 #if 0
 474                 if (num > 16)
 475                         num = 16;
 476 #endif
 477                 for (i = 0; i < num; i++)
 478                         {
 479                         if (i % 16 == 0 && i > 0)
 480                                 BIO_printf(bio, "\n   ");
 481                         BIO_printf(bio, " %02x", ((unsigned char*)buf)[i]);
 482                         }
 483                 if (i < len)
 484                         BIO_printf(bio, " ...");
 485                 BIO_printf(bio, "\n");
 486                 }
 487         BIO_flush(bio);
 488         }