ssl/s2_clnt.c

   1 /* ssl/s2_clnt.c */
   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 "ssl_locl.h"
 113 #ifndef OPENSSL_NO_SSL2
 114 #include <stdio.h>
 115 #include <openssl/rand.h>
 116 #include <openssl/buffer.h>
 117 #include <openssl/objects.h>
 118 #include <openssl/evp.h>
 119
 120 static const SSL_METHOD *ssl2_get_client_method(int ver);
 121 static int get_server_finished(SSL *s);
 122 static int get_server_verify(SSL *s);
 123 static int get_server_hello(SSL *s);
 124 static int client_hello(SSL *s);
 125 static int client_master_key(SSL *s);
 126 static int client_finished(SSL *s);
 127 static int client_certificate(SSL *s);
 128 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
 129         unsigned char *to,int padding);
 130 #define BREAK   break
 131
 132 static const SSL_METHOD *ssl2_get_client_method(int ver)
 133         {
 134         if (ver == SSL2_VERSION)
 135                 return(SSLv2_client_method());
 136         else
 137                 return(NULL);
 138         }
 139
 140 IMPLEMENT_ssl2_meth_func(SSLv2_client_method,
 141                         ssl_undefined_function,
 142                         ssl2_connect,
 143                         ssl2_get_client_method)
 144
 145 int ssl2_connect(SSL *s)
 146         {
 147         unsigned long l=(unsigned long)time(NULL);
 148         BUF_MEM *buf=NULL;
 149         int ret= -1;
 150         void (*cb)(const SSL *ssl,int type,int val)=NULL;
 151         int new_state,state;
 152
 153         RAND_add(&l,sizeof(l),0);
 154         ERR_clear_error();
 155         clear_sys_error();
 156
 157         if (s->info_callback != NULL)
 158                 cb=s->info_callback;
 159         else if (s->ctx->info_callback != NULL)
 160                 cb=s->ctx->info_callback;
 161
 162         /* init things to blank */
 163         s->in_handshake++;
 164         if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
 165
 166         for (;;)
 167                 {
 168                 state=s->state;
 169
 170                 switch (s->state)
 171                         {
 172                 case SSL_ST_BEFORE:
 173                 case SSL_ST_CONNECT:
 174                 case SSL_ST_BEFORE|SSL_ST_CONNECT:
 175                 case SSL_ST_OK|SSL_ST_CONNECT:
 176
 177                         s->server=0;
 178                         if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
 179
 180                         s->version=SSL2_VERSION;
 181                         s->type=SSL_ST_CONNECT;
 182
 183                         buf=s->init_buf;
 184                         if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL))
 185                                 {
 186                                 ret= -1;
 187                                 goto end;
 188                                 }
 189                         if (!BUF_MEM_grow(buf,
 190                                 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
 191                                 {
 192                                 if (buf == s->init_buf)
 193                                         buf=NULL;
 194                                 ret= -1;
 195                                 goto end;
 196                                 }
 197                         s->init_buf=buf;
 198                         buf=NULL;
 199                         s->init_num=0;
 200                         s->state=SSL2_ST_SEND_CLIENT_HELLO_A;
 201                         s->ctx->stats.sess_connect++;
 202                         s->handshake_func=ssl2_connect;
 203                         BREAK;
 204
 205                 case SSL2_ST_SEND_CLIENT_HELLO_A:
 206                 case SSL2_ST_SEND_CLIENT_HELLO_B:
 207                         s->shutdown=0;
 208                         ret=client_hello(s);
 209                         if (ret <= 0) goto end;
 210                         s->init_num=0;
 211                         s->state=SSL2_ST_GET_SERVER_HELLO_A;
 212                         BREAK;
 213
 214                 case SSL2_ST_GET_SERVER_HELLO_A:
 215                 case SSL2_ST_GET_SERVER_HELLO_B:
 216                         ret=get_server_hello(s);
 217                         if (ret <= 0) goto end;
 218                         s->init_num=0;
 219                         if (!s->hit) /* new session */
 220                                 {
 221                                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_A;
 222                                 BREAK;
 223                                 }
 224                         else
 225                                 {
 226                                 s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
 227                                 break;
 228                                 }
 229
 230                 case SSL2_ST_SEND_CLIENT_MASTER_KEY_A:
 231                 case SSL2_ST_SEND_CLIENT_MASTER_KEY_B:
 232                         ret=client_master_key(s);
 233                         if (ret <= 0) goto end;
 234                         s->init_num=0;
 235                         s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
 236                         break;
 237
 238                 case SSL2_ST_CLIENT_START_ENCRYPTION:
 239                         /* Ok, we now have all the stuff needed to
 240                          * start encrypting, so lets fire it up :-) */
 241                         if (!ssl2_enc_init(s,1))
 242                                 {
 243                                 ret= -1;
 244                                 goto end;
 245                                 }
 246                         s->s2->clear_text=0;
 247                         s->state=SSL2_ST_SEND_CLIENT_FINISHED_A;
 248                         break;
 249
 250                 case SSL2_ST_SEND_CLIENT_FINISHED_A:
 251                 case SSL2_ST_SEND_CLIENT_FINISHED_B:
 252                         ret=client_finished(s);
 253                         if (ret <= 0) goto end;
 254                         s->init_num=0;
 255                         s->state=SSL2_ST_GET_SERVER_VERIFY_A;
 256                         break;
 257
 258                 case SSL2_ST_GET_SERVER_VERIFY_A:
 259                 case SSL2_ST_GET_SERVER_VERIFY_B:
 260                         ret=get_server_verify(s);
 261                         if (ret <= 0) goto end;
 262                         s->init_num=0;
 263                         s->state=SSL2_ST_GET_SERVER_FINISHED_A;
 264                         break;
 265
 266                 case SSL2_ST_GET_SERVER_FINISHED_A:
 267                 case SSL2_ST_GET_SERVER_FINISHED_B:
 268                         ret=get_server_finished(s);
 269                         if (ret <= 0) goto end;
 270                         break;
 271
 272                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_A:
 273                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_B:
 274                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_C:
 275                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_D:
 276                 case SSL2_ST_X509_GET_CLIENT_CERTIFICATE:
 277                         ret=client_certificate(s);
 278                         if (ret <= 0) goto end;
 279                         s->init_num=0;
 280                         s->state=SSL2_ST_GET_SERVER_FINISHED_A;
 281                         break;
 282
 283                 case SSL_ST_OK:
 284                         if (s->init_buf != NULL)
 285                                 {
 286                                 BUF_MEM_free(s->init_buf);
 287                                 s->init_buf=NULL;
 288                                 }
 289                         s->init_num=0;
 290                 /*      ERR_clear_error();*/
 291
 292                         /* If we want to cache session-ids in the client
 293                          * and we successfully add the session-id to the
 294                          * cache, and there is a callback, then pass it out.
 295                          * 26/11/96 - eay - only add if not a re-used session.
 296                          */
 297
 298                         ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
 299                         if (s->hit) s->ctx->stats.sess_hit++;
 300
 301                         ret=1;
 302                         /* s->server=0; */
 303                         s->ctx->stats.sess_connect_good++;
 304
 305                         if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
 306
 307                         goto end;
 308                         /* break; */
 309                 default:
 310                         SSLerr(SSL_F_SSL2_CONNECT,SSL_R_UNKNOWN_STATE);
 311                         return(-1);
 312                         /* break; */
 313                         }
 314
 315                 if ((cb != NULL) && (s->state != state))
 316                         {
 317                         new_state=s->state;
 318                         s->state=state;
 319                         cb(s,SSL_CB_CONNECT_LOOP,1);
 320                         s->state=new_state;
 321                         }
 322                 }
 323 end:
 324         s->in_handshake--;
 325         if (buf != NULL)
 326                 BUF_MEM_free(buf);
 327         if (cb != NULL)
 328                 cb(s,SSL_CB_CONNECT_EXIT,ret);
 329         return(ret);
 330         }
 331
 332 static int get_server_hello(SSL *s)
 333         {
 334         unsigned char *buf;
 335         unsigned char *p;
 336         int i,j;
 337         unsigned long len;
 338         STACK_OF(SSL_CIPHER) *sk=NULL,*cl, *prio, *allow;
 339
 340         buf=(unsigned char *)s->init_buf->data;
 341         p=buf;
 342         if (s->state == SSL2_ST_GET_SERVER_HELLO_A)
 343                 {
 344                 i=ssl2_read(s,(char *)&(buf[s->init_num]),11-s->init_num);
 345                 if (i < (11-s->init_num))
 346                         return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
 347                 s->init_num = 11;
 348
 349                 if (*(p++) != SSL2_MT_SERVER_HELLO)
 350                         {
 351                         if (p[-1] != SSL2_MT_ERROR)
 352                                 {
 353                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 354                                 SSLerr(SSL_F_GET_SERVER_HELLO,
 355                                         SSL_R_READ_WRONG_PACKET_TYPE);
 356                                 }
 357                         else
 358                                 SSLerr(SSL_F_GET_SERVER_HELLO,
 359                                         SSL_R_PEER_ERROR);
 360                         return(-1);
 361                         }
 362 #if 0
 363                 s->hit=(*(p++))?1:0;
 364                 /* Some [PPC?] compilers fail to increment p in above
 365                    statement, e.g. one provided with Rhapsody 5.5, but
 366                    most recent example XL C 11.1 for AIX, even without
 367                    optimization flag... */
 368 #else
 369                 s->hit=(*p)?1:0; p++;
 370 #endif
 371                 s->s2->tmp.cert_type= *(p++);
 372                 n2s(p,i);
 373                 if (i < s->version) s->version=i;
 374                 n2s(p,i); s->s2->tmp.cert_length=i;
 375                 n2s(p,i); s->s2->tmp.csl=i;
 376                 n2s(p,i); s->s2->tmp.conn_id_length=i;
 377                 s->state=SSL2_ST_GET_SERVER_HELLO_B;
 378                 }
 379
 380         /* SSL2_ST_GET_SERVER_HELLO_B */
 381         len = 11 + (unsigned long)s->s2->tmp.cert_length + (unsigned long)s->s2->tmp.csl + (unsigned long)s->s2->tmp.conn_id_length;
 382         if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
 383                 {
 384                 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_MESSAGE_TOO_LONG);
 385                 return -1;
 386                 }
 387         j = (int)len - s->init_num;
 388         i = ssl2_read(s,(char *)&(buf[s->init_num]),j);
 389         if (i != j) return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
 390         if (s->msg_callback)
 391                 {
 392                 /* SERVER-HELLO */
 393                 s->msg_callback(0, s->version, 0, buf, (size_t)len, s, s->msg_callback_arg);
 394                 }
 395
 396         /* things are looking good */
 397
 398         p = buf + 11;
 399         if (s->hit)
 400                 {
 401                 if (s->s2->tmp.cert_length != 0)
 402                         {
 403                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_LENGTH_NOT_ZERO);
 404                         return(-1);
 405                         }
 406                 if (s->s2->tmp.cert_type != 0)
 407                         {
 408                         if (!(s->options &
 409                                 SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG))
 410                                 {
 411                                 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_TYPE_NOT_ZERO);
 412                                 return(-1);
 413                                 }
 414                         }
 415                 if (s->s2->tmp.csl != 0)
 416                         {
 417                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CIPHER_LIST_NOT_ZERO);
 418                         return(-1);
 419                         }
 420                 }
 421         else
 422                 {
 423 #if 0
 424                 /* very bad */
 425                 memset(s->session->session_id,0,
 426                         SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES);
 427                 s->session->session_id_length=0;
 428 #endif
 429
 430                 /* we need to do this in case we were trying to reuse a
 431                  * client session but others are already reusing it.
 432                  * If this was a new 'blank' session ID, the session-id
 433                  * length will still be 0 */
 434                 if (s->session->session_id_length > 0)
 435                         {
 436                         if (!ssl_get_new_session(s,0))
 437                                 {
 438                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 439                                 return(-1);
 440                                 }
 441                         }
 442
 443                 if (ssl2_set_certificate(s,s->s2->tmp.cert_type,
 444                         s->s2->tmp.cert_length,p) <= 0)
 445                         {
 446                         ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
 447                         return(-1);
 448                         }
 449                 p+=s->s2->tmp.cert_length;
 450
 451                 if (s->s2->tmp.csl == 0)
 452                         {
 453                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 454                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_LIST);
 455                         return(-1);
 456                         }
 457
 458                 /* We have just received a list of ciphers back from the
 459                  * server.  We need to get the ones that match, then select
 460                  * the one we want the most :-). */
 461
 462                 /* load the ciphers */
 463                 sk=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.csl,
 464                                             &s->session->ciphers);
 465                 p+=s->s2->tmp.csl;
 466                 if (sk == NULL)
 467                         {
 468                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 469                         SSLerr(SSL_F_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
 470                         return(-1);
 471                         }
 472
 473                 (void)sk_SSL_CIPHER_set_cmp_func(sk,ssl_cipher_ptr_id_cmp);
 474
 475                 /* get the array of ciphers we will accept */
 476                 cl=SSL_get_ciphers(s);
 477                 (void)sk_SSL_CIPHER_set_cmp_func(cl,ssl_cipher_ptr_id_cmp);
 478
 479                 /*
 480                  * If server preference flag set, choose the first
 481                  * (highest priority) cipher the server sends, otherwise
 482                  * client preference has priority.
 483                  */
 484                 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
 485                     {
 486                     prio = sk;
 487                     allow = cl;
 488                     }
 489                 else
 490                     {
 491                     prio = cl;
 492                     allow = sk;
 493                     }
 494                 /* In theory we could have ciphers sent back that we
 495                  * don't want to use but that does not matter since we
 496                  * will check against the list we originally sent and
 497                  * for performance reasons we should not bother to match
 498                  * the two lists up just to check. */
 499                 for (i=0; i<sk_SSL_CIPHER_num(prio); i++)
 500                         {
 501                         if (sk_SSL_CIPHER_find(allow,
 502                                              sk_SSL_CIPHER_value(prio,i)) >= 0)
 503                                 break;
 504                         }
 505
 506                 if (i >= sk_SSL_CIPHER_num(prio))
 507                         {
 508                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 509                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_MATCH);
 510                         return(-1);
 511                         }
 512                 s->session->cipher=sk_SSL_CIPHER_value(prio,i);
 513
 514
 515                 if (s->session->peer != NULL) /* can't happen*/
 516                         {
 517                         ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 518                         SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
 519                         return(-1);
 520                         }
 521
 522                 s->session->peer = s->session->sess_cert->peer_key->x509;
 523                 /* peer_key->x509 has been set by ssl2_set_certificate. */
 524                 CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509);
 525                 }
 526
 527         if (s->session->sess_cert == NULL
 528       || s->session->peer != s->session->sess_cert->peer_key->x509)
 529                 /* can't happen */
 530                 {
 531                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 532                 SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
 533                 return(-1);
 534                 }
 535
 536         s->s2->conn_id_length=s->s2->tmp.conn_id_length;
 537         if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 538                 {
 539                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 540                 SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG);
 541                 return -1;
 542                 }
 543         memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length);
 544         return(1);
 545         }
 546
 547 static int client_hello(SSL *s)
 548         {
 549         unsigned char *buf;
 550         unsigned char *p,*d;
 551 /*      CIPHER **cipher;*/
 552         int i,n,j;
 553
 554         buf=(unsigned char *)s->init_buf->data;
 555         if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A)
 556                 {
 557                 if ((s->session == NULL) ||
 558                         (s->session->ssl_version != s->version))
 559                         {
 560                         if (!ssl_get_new_session(s,0))
 561                                 {
 562                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 563                                 return(-1);
 564                                 }
 565                         }
 566                 /* else use the pre-loaded session */
 567
 568                 p=buf;                                  /* header */
 569                 d=p+9;                                  /* data section */
 570                 *(p++)=SSL2_MT_CLIENT_HELLO;            /* type */
 571                 s2n(SSL2_VERSION,p);                    /* version */
 572                 n=j=0;
 573
 574                 n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d,0);
 575                 d+=n;
 576
 577                 if (n == 0)
 578                         {
 579                         SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
 580                         return(-1);
 581                         }
 582
 583                 s2n(n,p);                       /* cipher spec num bytes */
 584
 585                 if ((s->session->session_id_length > 0) &&
 586                         (s->session->session_id_length <=
 587                         SSL2_MAX_SSL_SESSION_ID_LENGTH))
 588                         {
 589                         i=s->session->session_id_length;
 590                         s2n(i,p);               /* session id length */
 591                         memcpy(d,s->session->session_id,(unsigned int)i);
 592                         d+=i;
 593                         }
 594                 else
 595                         {
 596                         s2n(0,p);
 597                         }
 598
 599                 s->s2->challenge_length=SSL2_CHALLENGE_LENGTH;
 600                 s2n(SSL2_CHALLENGE_LENGTH,p);           /* challenge length */
 601                 /*challenge id data*/
 602                 if (RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH) <= 0)
 603                         return -1;
 604                 memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH);
 605                 d+=SSL2_CHALLENGE_LENGTH;
 606
 607                 s->state=SSL2_ST_SEND_CLIENT_HELLO_B;
 608                 s->init_num=d-buf;
 609                 s->init_off=0;
 610                 }
 611         /* SSL2_ST_SEND_CLIENT_HELLO_B */
 612         return(ssl2_do_write(s));
 613         }
 614
 615 static int client_master_key(SSL *s)
 616         {
 617         unsigned char *buf;
 618         unsigned char *p,*d;
 619         int clear,enc,karg,i;
 620         SSL_SESSION *sess;
 621         const EVP_CIPHER *c;
 622         const EVP_MD *md;
 623
 624         buf=(unsigned char *)s->init_buf->data;
 625         if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A)
 626                 {
 627
 628                 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL,NULL,NULL))
 629                         {
 630                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 631                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
 632                         return(-1);
 633                         }
 634                 sess=s->session;
 635                 p=buf;
 636                 d=p+10;
 637                 *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */
 638
 639                 i=ssl_put_cipher_by_char(s,sess->cipher,p);
 640                 p+=i;
 641
 642                 /* make key_arg data */
 643                 i=EVP_CIPHER_iv_length(c);
 644                 sess->key_arg_length=i;
 645                 if (i > SSL_MAX_KEY_ARG_LENGTH)
 646                         {
 647                         ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 648                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 649                         return -1;
 650                         }
 651                 if (i > 0)
 652                         if (RAND_pseudo_bytes(sess->key_arg,i) <= 0)
 653                                 return -1;
 654
 655                 /* make a master key */
 656                 i=EVP_CIPHER_key_length(c);
 657                 sess->master_key_length=i;
 658                 if (i > 0)
 659                         {
 660                         if (i > (int)sizeof(sess->master_key))
 661                                 {
 662                                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 663                                 SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 664                                 return -1;
 665                                 }
 666                         if (RAND_bytes(sess->master_key,i) <= 0)
 667                                 {
 668                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 669                                 return(-1);
 670                                 }
 671                         }
 672
 673                 if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC)
 674                         enc=8;
 675                 else if (SSL_C_IS_EXPORT(sess->cipher))
 676                         enc=5;
 677                 else
 678                         enc=i;
 679
 680                 if ((int)i < enc)
 681                         {
 682                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 683                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR);
 684                         return(-1);
 685                         }
 686                 clear=i-enc;
 687                 s2n(clear,p);
 688                 memcpy(d,sess->master_key,(unsigned int)clear);
 689                 d+=clear;
 690
 691                 enc=ssl_rsa_public_encrypt(sess->sess_cert,enc,
 692                         &(sess->master_key[clear]),d,
 693                         (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
 694                 if (enc <= 0)
 695                         {
 696                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 697                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR);
 698                         return(-1);
 699                         }
 700 #ifdef PKCS1_CHECK
 701                 if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++;
 702                 if (s->options & SSL_OP_PKCS1_CHECK_2)
 703                         sess->master_key[clear]++;
 704 #endif
 705                 s2n(enc,p);
 706                 d+=enc;
 707                 karg=sess->key_arg_length;
 708                 s2n(karg,p); /* key arg size */
 709                 if (karg > (int)sizeof(sess->key_arg))
 710                         {
 711                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 712                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 713                         return -1;
 714                         }
 715                 memcpy(d,sess->key_arg,(unsigned int)karg);
 716                 d+=karg;
 717
 718                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B;
 719                 s->init_num=d-buf;
 720                 s->init_off=0;
 721                 }
 722
 723         /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */
 724         return(ssl2_do_write(s));
 725         }
 726
 727 static int client_finished(SSL *s)
 728         {
 729         unsigned char *p;
 730
 731         if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A)
 732                 {
 733                 p=(unsigned char *)s->init_buf->data;
 734                 *(p++)=SSL2_MT_CLIENT_FINISHED;
 735                 if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 736                         {
 737                         SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR);
 738                         return -1;
 739                         }
 740                 memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length);
 741
 742                 s->state=SSL2_ST_SEND_CLIENT_FINISHED_B;
 743                 s->init_num=s->s2->conn_id_length+1;
 744                 s->init_off=0;
 745                 }
 746         return(ssl2_do_write(s));
 747         }
 748
 749 /* read the data and then respond */
 750 static int client_certificate(SSL *s)
 751         {
 752         unsigned char *buf;
 753         unsigned char *p,*d;
 754         int i;
 755         unsigned int n;
 756         int cert_ch_len;
 757         unsigned char *cert_ch;
 758
 759         buf=(unsigned char *)s->init_buf->data;
 760
 761         /* We have a cert associated with the SSL, so attach it to
 762          * the session if it does not have one */
 763
 764         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A)
 765                 {
 766                 i=ssl2_read(s,(char *)&(buf[s->init_num]),
 767                         SSL2_MAX_CERT_CHALLENGE_LENGTH+2-s->init_num);
 768                 if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+2-s->init_num))
 769                         return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i));
 770                 s->init_num += i;
 771                 if (s->msg_callback)
 772                         {
 773                         /* REQUEST-CERTIFICATE */
 774                         s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg);
 775                         }
 776
 777                 /* type=buf[0]; */
 778                 /* type eq x509 */
 779                 if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION)
 780                         {
 781                         ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE);
 782                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE);
 783                         return(-1);
 784                         }
 785
 786                 if ((s->cert == NULL) ||
 787                         (s->cert->key->x509 == NULL) ||
 788                         (s->cert->key->privatekey == NULL))
 789                         {
 790                         s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE;
 791                         }
 792                 else
 793                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 794                 }
 795
 796         cert_ch = buf + 2;
 797         cert_ch_len = s->init_num - 2;
 798
 799         if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE)
 800                 {
 801                 X509 *x509=NULL;
 802                 EVP_PKEY *pkey=NULL;
 803
 804                 /* If we get an error we need to
 805                  * ssl->rwstate=SSL_X509_LOOKUP;
 806                  * return(error);
 807                  * We should then be retried when things are ok and we
 808                  * can get a cert or not */
 809
 810                 i=0;
 811                 if (s->ctx->client_cert_cb != NULL)
 812                         {
 813                         i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
 814                         }
 815
 816                 if (i < 0)
 817                         {
 818                         s->rwstate=SSL_X509_LOOKUP;
 819                         return(-1);
 820                         }
 821                 s->rwstate=SSL_NOTHING;
 822
 823                 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
 824                         {
 825                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 826                         if (    !SSL_use_certificate(s,x509) ||
 827                                 !SSL_use_PrivateKey(s,pkey))
 828                                 {
 829                                 i=0;
 830                                 }
 831                         X509_free(x509);
 832                         EVP_PKEY_free(pkey);
 833                         }
 834                 else if (i == 1)
 835                         {
 836                         if (x509 != NULL) X509_free(x509);
 837                         if (pkey != NULL) EVP_PKEY_free(pkey);
 838                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
 839                         i=0;
 840                         }
 841
 842                 if (i == 0)
 843                         {
 844                         /* We have no client certificate to respond with
 845                          * so send the correct error message back */
 846                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B;
 847                         p=buf;
 848                         *(p++)=SSL2_MT_ERROR;
 849                         s2n(SSL2_PE_NO_CERTIFICATE,p);
 850                         s->init_off=0;
 851                         s->init_num=3;
 852                         /* Write is done at the end */
 853                         }
 854                 }
 855
 856         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B)
 857                 {
 858                 return(ssl2_do_write(s));
 859                 }
 860
 861         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C)
 862                 {
 863                 EVP_MD_CTX ctx;
 864
 865                 /* ok, now we calculate the checksum
 866                  * do it first so we can reuse buf :-) */
 867                 p=buf;
 868                 EVP_MD_CTX_init(&ctx);
 869                 EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL);
 870                 EVP_SignUpdate(&ctx,s->s2->key_material,
 871                                s->s2->key_material_length);
 872                 EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len);
 873                 i=i2d_X509(s->session->sess_cert->peer_key->x509,&p);
 874                 /* Don't update the signature if it fails - FIXME: probably should handle this better */
 875                 if(i > 0)
 876                         EVP_SignUpdate(&ctx,buf,(unsigned int)i);
 877
 878                 p=buf;
 879                 d=p+6;
 880                 *(p++)=SSL2_MT_CLIENT_CERTIFICATE;
 881                 *(p++)=SSL2_CT_X509_CERTIFICATE;
 882                 n=i2d_X509(s->cert->key->x509,&d);
 883                 s2n(n,p);
 884
 885                 if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey))
 886                         {
 887                         /* this is not good.  If things have failed it
 888                          * means there so something wrong with the key.
 889                          * We will continue with a 0 length signature
 890                          */
 891                         }
 892                 EVP_MD_CTX_cleanup(&ctx);
 893                 s2n(n,p);
 894                 d+=n;
 895
 896                 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D;
 897                 s->init_num=d-buf;
 898                 s->init_off=0;
 899                 }
 900         /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */
 901         return(ssl2_do_write(s));
 902         }
 903
 904 static int get_server_verify(SSL *s)
 905         {
 906         unsigned char *p;
 907         int i, n, len;
 908
 909         p=(unsigned char *)s->init_buf->data;
 910         if (s->state == SSL2_ST_GET_SERVER_VERIFY_A)
 911                 {
 912                 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num);
 913                 if (i < (1-s->init_num))
 914                         return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 915                 s->init_num += i;
 916
 917                 s->state= SSL2_ST_GET_SERVER_VERIFY_B;
 918                 if (*p != SSL2_MT_SERVER_VERIFY)
 919                         {
 920                         if (p[0] != SSL2_MT_ERROR)
 921                                 {
 922                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 923                                 SSLerr(SSL_F_GET_SERVER_VERIFY,
 924                                         SSL_R_READ_WRONG_PACKET_TYPE);
 925                                 }
 926                         else
 927                                 {
 928                                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR);
 929                                 /* try to read the error message */
 930                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 931                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 932                                 }
 933                         return(-1);
 934                         }
 935                 }
 936
 937         p=(unsigned char *)s->init_buf->data;
 938         len = 1 + s->s2->challenge_length;
 939         n =  len - s->init_num;
 940         i = ssl2_read(s,(char *)&(p[s->init_num]),n);
 941         if (i < n)
 942                 return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 943         if (s->msg_callback)
 944                 {
 945                 /* SERVER-VERIFY */
 946                 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg);
 947                 }
 948         p += 1;
 949
 950         if (CRYPTO_memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0)
 951                 {
 952                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 953                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT);
 954                 return(-1);
 955                 }
 956         return(1);
 957         }
 958
 959 static int get_server_finished(SSL *s)
 960         {
 961         unsigned char *buf;
 962         unsigned char *p;
 963         int i, n, len;
 964
 965         buf=(unsigned char *)s->init_buf->data;
 966         p=buf;
 967         if (s->state == SSL2_ST_GET_SERVER_FINISHED_A)
 968                 {
 969                 i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num);
 970                 if (i < (1-s->init_num))
 971                         return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
 972                 s->init_num += i;
 973
 974                 if (*p == SSL2_MT_REQUEST_CERTIFICATE)
 975                         {
 976                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A;
 977                         return(1);
 978                         }
 979                 else if (*p != SSL2_MT_SERVER_FINISHED)
 980                         {
 981                         if (p[0] != SSL2_MT_ERROR)
 982                                 {
 983                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 984                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE);
 985                                 }
 986                         else
 987                                 {
 988                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR);
 989                                 /* try to read the error message */
 990                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 991                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 992                                 }
 993                         return(-1);
 994                         }
 995                 s->state=SSL2_ST_GET_SERVER_FINISHED_B;
 996                 }
 997
 998         len = 1 + SSL2_SSL_SESSION_ID_LENGTH;
 999         n = len - s->init_num;
1000         i = ssl2_read(s,(char *)&(buf[s->init_num]), n);
1001         if (i < n)
1002                 {
1003                 /*
1004                  * XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH,
1005                  * that's the maximum
1006                  */
1007                 return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
1008                 }
1009         s->init_num += i;
1010         if (s->msg_callback)
1011                 {
1012                 /* SERVER-FINISHED */
1013                 s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg);
1014                 }
1015
1016         if (!s->hit) /* new session */
1017                 {
1018                 /* new session-id */
1019                 /* Make sure we were not trying to re-use an old SSL_SESSION
1020                  * or bad things can happen */
1021                 /* ZZZZZZZZZZZZZ */
1022                 s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
1023                 memcpy(s->session->session_id,p+1,SSL2_SSL_SESSION_ID_LENGTH);
1024                 }
1025         else
1026                 {
1027                 if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG))
1028                         {
1029                         if ((s->session->session_id_length > sizeof s->session->session_id)
1030                             || (0 != memcmp(buf + 1, s->session->session_id,
1031                                             (unsigned int)s->session->session_id_length)))
1032                                 {
1033                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
1034                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT);
1035                                 return(-1);
1036                                 }
1037                         }
1038                 }
1039         s->state = SSL_ST_OK;
1040         return(1);
1041         }
1042
1043 /* loads in the certificate from the server */
1044 int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data)
1045         {
1046         STACK_OF(X509) *sk=NULL;
1047         EVP_PKEY *pkey=NULL;
1048         SESS_CERT *sc=NULL;
1049         int i;
1050         X509 *x509=NULL;
1051         int ret=0;
1052
1053         x509=d2i_X509(NULL,&data,(long)len);
1054         if (x509 == NULL)
1055                 {
1056                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB);
1057                 goto err;
1058                 }
1059
1060         if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509))
1061                 {
1062                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1063                 goto err;
1064                 }
1065
1066         i=ssl_verify_cert_chain(s,sk);
1067
1068         if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0))
1069                 {
1070                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1071                 goto err;
1072                 }
1073         ERR_clear_error(); /* but we keep s->verify_result */
1074         s->session->verify_result = s->verify_result;
1075
1076         /* server's cert for this session */
1077         sc=ssl_sess_cert_new();
1078         if (sc == NULL)
1079                 {
1080                 ret= -1;
1081                 goto err;
1082                 }
1083         if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1084         s->session->sess_cert=sc;
1085
1086         sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509;
1087         sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]);
1088
1089         pkey=X509_get_pubkey(x509);
1090         x509=NULL;
1091         if (pkey == NULL)
1092                 {
1093                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY);
1094                 goto err;
1095                 }
1096         if (pkey->type != EVP_PKEY_RSA)
1097                 {
1098                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA);
1099                 goto err;
1100                 }
1101
1102         if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE))
1103                 goto err;
1104         ret=1;
1105 err:
1106         sk_X509_free(sk);
1107         X509_free(x509);
1108         EVP_PKEY_free(pkey);
1109         return(ret);
1110         }
1111
1112 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
1113              unsigned char *to, int padding)
1114         {
1115         EVP_PKEY *pkey=NULL;
1116         int i= -1;
1117
1118         if ((sc == NULL) || (sc->peer_key->x509 == NULL) ||
1119                 ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL))
1120                 {
1121                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY);
1122                 return(-1);
1123                 }
1124         if (pkey->type != EVP_PKEY_RSA)
1125                 {
1126                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA);
1127                 goto end;
1128                 }
1129
1130         /* we have the public key */
1131         i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding);
1132         if (i < 0)
1133                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB);
1134 end:
1135         EVP_PKEY_free(pkey);
1136         return(i);
1137         }
1138 #else /* !OPENSSL_NO_SSL2 */
1139
1140 # if PEDANTIC
1141 static void *dummy=&dummy;
1142 # endif
1143
1144 #endif