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 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 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 SSL_METHOD *SSLv2_client_method(void)
 141         {
 142         static int init=1;
 143         static SSL_METHOD SSLv2_client_data;
 144
 145         if (init)
 146                 {
 147                 CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD);
 148
 149                 if (init)
 150                         {
 151                         memcpy((char *)&SSLv2_client_data,(char *)sslv2_base_method(),
 152                                 sizeof(SSL_METHOD));
 153                         SSLv2_client_data.ssl_connect=ssl2_connect;
 154                         SSLv2_client_data.get_ssl_method=ssl2_get_client_method;
 155                         init=0;
 156                         }
 157
 158                 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD);
 159                 }
 160         return(&SSLv2_client_data);
 161         }
 162
 163 int ssl2_connect(SSL *s)
 164         {
 165         unsigned long l=time(NULL);
 166         BUF_MEM *buf=NULL;
 167         int ret= -1;
 168         void (*cb)(const SSL *ssl,int type,int val)=NULL;
 169         int new_state,state;
 170
 171         RAND_add(&l,sizeof(l),0);
 172         ERR_clear_error();
 173         clear_sys_error();
 174
 175         if (s->info_callback != NULL)
 176                 cb=s->info_callback;
 177         else if (s->ctx->info_callback != NULL)
 178                 cb=s->ctx->info_callback;
 179
 180         /* init things to blank */
 181         s->in_handshake++;
 182         if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
 183
 184         for (;;)
 185                 {
 186                 state=s->state;
 187
 188                 switch (s->state)
 189                         {
 190                 case SSL_ST_BEFORE:
 191                 case SSL_ST_CONNECT:
 192                 case SSL_ST_BEFORE|SSL_ST_CONNECT:
 193                 case SSL_ST_OK|SSL_ST_CONNECT:
 194
 195                         s->server=0;
 196                         if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
 197
 198                         s->version=SSL2_VERSION;
 199                         s->type=SSL_ST_CONNECT;
 200
 201                         buf=s->init_buf;
 202                         if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL))
 203                                 {
 204                                 ret= -1;
 205                                 goto end;
 206                                 }
 207                         if (!BUF_MEM_grow(buf,
 208                                 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
 209                                 {
 210                                 if (buf == s->init_buf)
 211                                         buf=NULL;
 212                                 ret= -1;
 213                                 goto end;
 214                                 }
 215                         s->init_buf=buf;
 216                         buf=NULL;
 217                         s->init_num=0;
 218                         s->state=SSL2_ST_SEND_CLIENT_HELLO_A;
 219                         s->ctx->stats.sess_connect++;
 220                         s->handshake_func=ssl2_connect;
 221                         BREAK;
 222
 223                 case SSL2_ST_SEND_CLIENT_HELLO_A:
 224                 case SSL2_ST_SEND_CLIENT_HELLO_B:
 225                         s->shutdown=0;
 226                         ret=client_hello(s);
 227                         if (ret <= 0) goto end;
 228                         s->init_num=0;
 229                         s->state=SSL2_ST_GET_SERVER_HELLO_A;
 230                         BREAK;
 231
 232                 case SSL2_ST_GET_SERVER_HELLO_A:
 233                 case SSL2_ST_GET_SERVER_HELLO_B:
 234                         ret=get_server_hello(s);
 235                         if (ret <= 0) goto end;
 236                         s->init_num=0;
 237                         if (!s->hit) /* new session */
 238                                 {
 239                                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_A;
 240                                 BREAK;
 241                                 }
 242                         else
 243                                 {
 244                                 s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
 245                                 break;
 246                                 }
 247
 248                 case SSL2_ST_SEND_CLIENT_MASTER_KEY_A:
 249                 case SSL2_ST_SEND_CLIENT_MASTER_KEY_B:
 250                         ret=client_master_key(s);
 251                         if (ret <= 0) goto end;
 252                         s->init_num=0;
 253                         s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
 254                         break;
 255
 256                 case SSL2_ST_CLIENT_START_ENCRYPTION:
 257                         /* Ok, we now have all the stuff needed to
 258                          * start encrypting, so lets fire it up :-) */
 259                         if (!ssl2_enc_init(s,1))
 260                                 {
 261                                 ret= -1;
 262                                 goto end;
 263                                 }
 264                         s->s2->clear_text=0;
 265                         s->state=SSL2_ST_SEND_CLIENT_FINISHED_A;
 266                         break;
 267
 268                 case SSL2_ST_SEND_CLIENT_FINISHED_A:
 269                 case SSL2_ST_SEND_CLIENT_FINISHED_B:
 270                         ret=client_finished(s);
 271                         if (ret <= 0) goto end;
 272                         s->init_num=0;
 273                         s->state=SSL2_ST_GET_SERVER_VERIFY_A;
 274                         break;
 275
 276                 case SSL2_ST_GET_SERVER_VERIFY_A:
 277                 case SSL2_ST_GET_SERVER_VERIFY_B:
 278                         ret=get_server_verify(s);
 279                         if (ret <= 0) goto end;
 280                         s->init_num=0;
 281                         s->state=SSL2_ST_GET_SERVER_FINISHED_A;
 282                         break;
 283
 284                 case SSL2_ST_GET_SERVER_FINISHED_A:
 285                 case SSL2_ST_GET_SERVER_FINISHED_B:
 286                         ret=get_server_finished(s);
 287                         if (ret <= 0) goto end;
 288                         break;
 289
 290                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_A:
 291                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_B:
 292                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_C:
 293                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_D:
 294                 case SSL2_ST_X509_GET_CLIENT_CERTIFICATE:
 295                         ret=client_certificate(s);
 296                         if (ret <= 0) goto end;
 297                         s->init_num=0;
 298                         s->state=SSL2_ST_GET_SERVER_FINISHED_A;
 299                         break;
 300
 301                 case SSL_ST_OK:
 302                         if (s->init_buf != NULL)
 303                                 {
 304                                 BUF_MEM_free(s->init_buf);
 305                                 s->init_buf=NULL;
 306                                 }
 307                         s->init_num=0;
 308                 /*      ERR_clear_error();*/
 309
 310                         /* If we want to cache session-ids in the client
 311                          * and we successfully add the session-id to the
 312                          * cache, and there is a callback, then pass it out.
 313                          * 26/11/96 - eay - only add if not a re-used session.
 314                          */
 315
 316                         ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
 317                         if (s->hit) s->ctx->stats.sess_hit++;
 318
 319                         ret=1;
 320                         /* s->server=0; */
 321                         s->ctx->stats.sess_connect_good++;
 322
 323                         if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
 324
 325                         goto end;
 326                         /* break; */
 327                 default:
 328                         SSLerr(SSL_F_SSL2_CONNECT,SSL_R_UNKNOWN_STATE);
 329                         return(-1);
 330                         /* break; */
 331                         }
 332
 333                 if ((cb != NULL) && (s->state != state))
 334                         {
 335                         new_state=s->state;
 336                         s->state=state;
 337                         cb(s,SSL_CB_CONNECT_LOOP,1);
 338                         s->state=new_state;
 339                         }
 340                 }
 341 end:
 342         s->in_handshake--;
 343         if (buf != NULL)
 344                 BUF_MEM_free(buf);
 345         if (cb != NULL)
 346                 cb(s,SSL_CB_CONNECT_EXIT,ret);
 347         return(ret);
 348         }
 349
 350 static int get_server_hello(SSL *s)
 351         {
 352         unsigned char *buf;
 353         unsigned char *p;
 354         int i,j;
 355         unsigned long len;
 356         STACK_OF(SSL_CIPHER) *sk=NULL,*cl, *prio, *allow;
 357
 358         buf=(unsigned char *)s->init_buf->data;
 359         p=buf;
 360         if (s->state == SSL2_ST_GET_SERVER_HELLO_A)
 361                 {
 362                 i=ssl2_read(s,(char *)&(buf[s->init_num]),11-s->init_num);
 363                 if (i < (11-s->init_num))
 364                         return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
 365                 s->init_num = 11;
 366
 367                 if (*(p++) != SSL2_MT_SERVER_HELLO)
 368                         {
 369                         if (p[-1] != SSL2_MT_ERROR)
 370                                 {
 371                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 372                                 SSLerr(SSL_F_GET_SERVER_HELLO,
 373                                         SSL_R_READ_WRONG_PACKET_TYPE);
 374                                 }
 375                         else
 376                                 SSLerr(SSL_F_GET_SERVER_HELLO,
 377                                         SSL_R_PEER_ERROR);
 378                         return(-1);
 379                         }
 380 #ifdef __APPLE_CC__
 381                 /* The Rhapsody 5.5 (a.k.a. MacOS X) compiler bug
 382                  * workaround. <appro@fy.chalmers.se> */
 383                 s->hit=(i=*(p++))?1:0;
 384 #else
 385                 s->hit=(*(p++))?1:0;
 386 #endif
 387                 s->s2->tmp.cert_type= *(p++);
 388                 n2s(p,i);
 389                 if (i < s->version) s->version=i;
 390                 n2s(p,i); s->s2->tmp.cert_length=i;
 391                 n2s(p,i); s->s2->tmp.csl=i;
 392                 n2s(p,i); s->s2->tmp.conn_id_length=i;
 393                 s->state=SSL2_ST_GET_SERVER_HELLO_B;
 394                 }
 395
 396         /* SSL2_ST_GET_SERVER_HELLO_B */
 397         len = 11 + (unsigned long)s->s2->tmp.cert_length + (unsigned long)s->s2->tmp.csl + (unsigned long)s->s2->tmp.conn_id_length;
 398         if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
 399                 {
 400                 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_MESSAGE_TOO_LONG);
 401                 return -1;
 402                 }
 403         j = (int)len - s->init_num;
 404         i = ssl2_read(s,(char *)&(buf[s->init_num]),j);
 405         if (i != j) return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
 406         if (s->msg_callback)
 407                 s->msg_callback(0, s->version, 0, buf, (size_t)len, s, s->msg_callback_arg); /* SERVER-HELLO */
 408
 409         /* things are looking good */
 410
 411         p = buf + 11;
 412         if (s->hit)
 413                 {
 414                 if (s->s2->tmp.cert_length != 0)
 415                         {
 416                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_LENGTH_NOT_ZERO);
 417                         return(-1);
 418                         }
 419                 if (s->s2->tmp.cert_type != 0)
 420                         {
 421                         if (!(s->options &
 422                                 SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG))
 423                                 {
 424                                 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_TYPE_NOT_ZERO);
 425                                 return(-1);
 426                                 }
 427                         }
 428                 if (s->s2->tmp.csl != 0)
 429                         {
 430                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CIPHER_LIST_NOT_ZERO);
 431                         return(-1);
 432                         }
 433                 }
 434         else
 435                 {
 436 #ifdef undef
 437                 /* very bad */
 438                 memset(s->session->session_id,0,
 439                         SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES);
 440                 s->session->session_id_length=0;
 441                 */
 442 #endif
 443
 444                 /* we need to do this in case we were trying to reuse a
 445                  * client session but others are already reusing it.
 446                  * If this was a new 'blank' session ID, the session-id
 447                  * length will still be 0 */
 448                 if (s->session->session_id_length > 0)
 449                         {
 450                         if (!ssl_get_new_session(s,0))
 451                                 {
 452                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 453                                 return(-1);
 454                                 }
 455                         }
 456
 457                 if (ssl2_set_certificate(s,s->s2->tmp.cert_type,
 458                         s->s2->tmp.cert_length,p) <= 0)
 459                         {
 460                         ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
 461                         return(-1);
 462                         }
 463                 p+=s->s2->tmp.cert_length;
 464
 465                 if (s->s2->tmp.csl == 0)
 466                         {
 467                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 468                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_LIST);
 469                         return(-1);
 470                         }
 471
 472                 /* We have just received a list of ciphers back from the
 473                  * server.  We need to get the ones that match, then select
 474                  * the one we want the most :-). */
 475
 476                 /* load the ciphers */
 477                 sk=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.csl,
 478                                             &s->session->ciphers);
 479                 p+=s->s2->tmp.csl;
 480                 if (sk == NULL)
 481                         {
 482                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 483                         SSLerr(SSL_F_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
 484                         return(-1);
 485                         }
 486
 487                 sk_SSL_CIPHER_set_cmp_func(sk,ssl_cipher_ptr_id_cmp);
 488
 489                 /* get the array of ciphers we will accept */
 490                 cl=SSL_get_ciphers(s);
 491                 sk_SSL_CIPHER_set_cmp_func(cl,ssl_cipher_ptr_id_cmp);
 492
 493                 /*
 494                  * If server preference flag set, choose the first
 495                  * (highest priority) cipher the server sends, otherwise
 496                  * client preference has priority.
 497                  */
 498                 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
 499                     {
 500                     prio = sk;
 501                     allow = cl;
 502                     }
 503                 else
 504                     {
 505                     prio = cl;
 506                     allow = sk;
 507                     }
 508                 /* In theory we could have ciphers sent back that we
 509                  * don't want to use but that does not matter since we
 510                  * will check against the list we originally sent and
 511                  * for performance reasons we should not bother to match
 512                  * the two lists up just to check. */
 513                 for (i=0; i<sk_SSL_CIPHER_num(prio); i++)
 514                         {
 515                         if (sk_SSL_CIPHER_find(allow,
 516                                              sk_SSL_CIPHER_value(prio,i)) >= 0)
 517                                 break;
 518                         }
 519
 520                 if (i >= sk_SSL_CIPHER_num(prio))
 521                         {
 522                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 523                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_MATCH);
 524                         return(-1);
 525                         }
 526                 s->session->cipher=sk_SSL_CIPHER_value(prio,i);
 527
 528
 529                 if (s->session->peer != NULL) /* 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->session->peer = s->session->sess_cert->peer_key->x509;
 537                 /* peer_key->x509 has been set by ssl2_set_certificate. */
 538                 CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509);
 539                 }
 540
 541         if (s->session->peer != s->session->sess_cert->peer_key->x509)
 542                 /* can't happen */
 543                 {
 544                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 545                 SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
 546                 return(-1);
 547                 }
 548
 549         s->s2->conn_id_length=s->s2->tmp.conn_id_length;
 550         if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 551                 {
 552                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 553                 SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG);
 554                 return -1;
 555                 }
 556         memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length);
 557         return(1);
 558         }
 559
 560 static int client_hello(SSL *s)
 561         {
 562         unsigned char *buf;
 563         unsigned char *p,*d;
 564 /*      CIPHER **cipher;*/
 565         int i,n,j;
 566
 567         buf=(unsigned char *)s->init_buf->data;
 568         if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A)
 569                 {
 570                 if ((s->session == NULL) ||
 571                         (s->session->ssl_version != s->version))
 572                         {
 573                         if (!ssl_get_new_session(s,0))
 574                                 {
 575                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 576                                 return(-1);
 577                                 }
 578                         }
 579                 /* else use the pre-loaded session */
 580
 581                 p=buf;                                  /* header */
 582                 d=p+9;                                  /* data section */
 583                 *(p++)=SSL2_MT_CLIENT_HELLO;            /* type */
 584                 s2n(SSL2_VERSION,p);                    /* version */
 585                 n=j=0;
 586
 587                 n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d);
 588                 d+=n;
 589
 590                 if (n == 0)
 591                         {
 592                         SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
 593                         return(-1);
 594                         }
 595
 596                 s2n(n,p);                       /* cipher spec num bytes */
 597
 598                 if ((s->session->session_id_length > 0) &&
 599                         (s->session->session_id_length <=
 600                         SSL2_MAX_SSL_SESSION_ID_LENGTH))
 601                         {
 602                         i=s->session->session_id_length;
 603                         s2n(i,p);               /* session id length */
 604                         memcpy(d,s->session->session_id,(unsigned int)i);
 605                         d+=i;
 606                         }
 607                 else
 608                         {
 609                         s2n(0,p);
 610                         }
 611
 612                 s->s2->challenge_length=SSL2_CHALLENGE_LENGTH;
 613                 s2n(SSL2_CHALLENGE_LENGTH,p);           /* challenge length */
 614                 /*challenge id data*/
 615                 RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH);
 616                 memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH);
 617                 d+=SSL2_CHALLENGE_LENGTH;
 618
 619                 s->state=SSL2_ST_SEND_CLIENT_HELLO_B;
 620                 s->init_num=d-buf;
 621                 s->init_off=0;
 622                 }
 623         /* SSL2_ST_SEND_CLIENT_HELLO_B */
 624         return(ssl2_do_write(s));
 625         }
 626
 627 static int client_master_key(SSL *s)
 628         {
 629         unsigned char *buf;
 630         unsigned char *p,*d;
 631         int clear,enc,karg,i;
 632         SSL_SESSION *sess;
 633         const EVP_CIPHER *c;
 634         const EVP_MD *md;
 635
 636         buf=(unsigned char *)s->init_buf->data;
 637         if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A)
 638                 {
 639
 640                 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL))
 641                         {
 642                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 643                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
 644                         return(-1);
 645                         }
 646                 sess=s->session;
 647                 p=buf;
 648                 d=p+10;
 649                 *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */
 650
 651                 i=ssl_put_cipher_by_char(s,sess->cipher,p);
 652                 p+=i;
 653
 654                 /* make key_arg data */
 655                 i=EVP_CIPHER_iv_length(c);
 656                 sess->key_arg_length=i;
 657                 if (i > SSL_MAX_KEY_ARG_LENGTH)
 658                         {
 659                         ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 660                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 661                         return -1;
 662                         }
 663                 if (i > 0) RAND_pseudo_bytes(sess->key_arg,i);
 664
 665                 /* make a master key */
 666                 i=EVP_CIPHER_key_length(c);
 667                 sess->master_key_length=i;
 668                 if (i > 0)
 669                         {
 670                         if (i > (int)sizeof(sess->master_key))
 671                                 {
 672                                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 673                                 SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 674                                 return -1;
 675                                 }
 676                         if (RAND_bytes(sess->master_key,i) <= 0)
 677                                 {
 678                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 679                                 return(-1);
 680                                 }
 681                         }
 682
 683                 if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC)
 684                         enc=8;
 685                 else if (SSL_C_IS_EXPORT(sess->cipher))
 686                         enc=5;
 687                 else
 688                         enc=i;
 689
 690                 if ((int)i < enc)
 691                         {
 692                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 693                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR);
 694                         return(-1);
 695                         }
 696                 clear=i-enc;
 697                 s2n(clear,p);
 698                 memcpy(d,sess->master_key,(unsigned int)clear);
 699                 d+=clear;
 700
 701                 enc=ssl_rsa_public_encrypt(sess->sess_cert,enc,
 702                         &(sess->master_key[clear]),d,
 703                         (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
 704                 if (enc <= 0)
 705                         {
 706                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 707                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR);
 708                         return(-1);
 709                         }
 710 #ifdef PKCS1_CHECK
 711                 if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++;
 712                 if (s->options & SSL_OP_PKCS1_CHECK_2)
 713                         sess->master_key[clear]++;
 714 #endif
 715                 s2n(enc,p);
 716                 d+=enc;
 717                 karg=sess->key_arg_length;
 718                 s2n(karg,p); /* key arg size */
 719                 if (karg > (int)sizeof(sess->key_arg))
 720                         {
 721                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 722                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 723                         return -1;
 724                         }
 725                 memcpy(d,sess->key_arg,(unsigned int)karg);
 726                 d+=karg;
 727
 728                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B;
 729                 s->init_num=d-buf;
 730                 s->init_off=0;
 731                 }
 732
 733         /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */
 734         return(ssl2_do_write(s));
 735         }
 736
 737 static int client_finished(SSL *s)
 738         {
 739         unsigned char *p;
 740
 741         if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A)
 742                 {
 743                 p=(unsigned char *)s->init_buf->data;
 744                 *(p++)=SSL2_MT_CLIENT_FINISHED;
 745                 if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 746                         {
 747                         SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR);
 748                         return -1;
 749                         }
 750                 memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length);
 751
 752                 s->state=SSL2_ST_SEND_CLIENT_FINISHED_B;
 753                 s->init_num=s->s2->conn_id_length+1;
 754                 s->init_off=0;
 755                 }
 756         return(ssl2_do_write(s));
 757         }
 758
 759 /* read the data and then respond */
 760 static int client_certificate(SSL *s)
 761         {
 762         unsigned char *buf;
 763         unsigned char *p,*d;
 764         int i;
 765         unsigned int n;
 766         int cert_ch_len;
 767         unsigned char *cert_ch;
 768
 769         buf=(unsigned char *)s->init_buf->data;
 770
 771         /* We have a cert associated with the SSL, so attach it to
 772          * the session if it does not have one */
 773
 774         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A)
 775                 {
 776                 i=ssl2_read(s,(char *)&(buf[s->init_num]),
 777                         SSL2_MAX_CERT_CHALLENGE_LENGTH+2-s->init_num);
 778                 if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+2-s->init_num))
 779                         return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i));
 780                 s->init_num += i;
 781                 if (s->msg_callback)
 782                         s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* REQUEST-CERTIFICATE */
 783
 784                 /* type=buf[0]; */
 785                 /* type eq x509 */
 786                 if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION)
 787                         {
 788                         ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE);
 789                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE);
 790                         return(-1);
 791                         }
 792
 793                 if ((s->cert == NULL) ||
 794                         (s->cert->key->x509 == NULL) ||
 795                         (s->cert->key->privatekey == NULL))
 796                         {
 797                         s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE;
 798                         }
 799                 else
 800                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 801                 }
 802
 803         cert_ch = buf + 2;
 804         cert_ch_len = s->init_num - 2;
 805
 806         if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE)
 807                 {
 808                 X509 *x509=NULL;
 809                 EVP_PKEY *pkey=NULL;
 810
 811                 /* If we get an error we need to
 812                  * ssl->rwstate=SSL_X509_LOOKUP;
 813                  * return(error);
 814                  * We should then be retried when things are ok and we
 815                  * can get a cert or not */
 816
 817                 i=0;
 818                 if (s->ctx->client_cert_cb != NULL)
 819                         {
 820                         i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
 821                         }
 822
 823                 if (i < 0)
 824                         {
 825                         s->rwstate=SSL_X509_LOOKUP;
 826                         return(-1);
 827                         }
 828                 s->rwstate=SSL_NOTHING;
 829
 830                 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
 831                         {
 832                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 833                         if (    !SSL_use_certificate(s,x509) ||
 834                                 !SSL_use_PrivateKey(s,pkey))
 835                                 {
 836                                 i=0;
 837                                 }
 838                         X509_free(x509);
 839                         EVP_PKEY_free(pkey);
 840                         }
 841                 else if (i == 1)
 842                         {
 843                         if (x509 != NULL) X509_free(x509);
 844                         if (pkey != NULL) EVP_PKEY_free(pkey);
 845                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
 846                         i=0;
 847                         }
 848
 849                 if (i == 0)
 850                         {
 851                         /* We have no client certificate to respond with
 852                          * so send the correct error message back */
 853                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B;
 854                         p=buf;
 855                         *(p++)=SSL2_MT_ERROR;
 856                         s2n(SSL2_PE_NO_CERTIFICATE,p);
 857                         s->init_off=0;
 858                         s->init_num=3;
 859                         /* Write is done at the end */
 860                         }
 861                 }
 862
 863         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B)
 864                 {
 865                 return(ssl2_do_write(s));
 866                 }
 867
 868         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C)
 869                 {
 870                 EVP_MD_CTX ctx;
 871
 872                 /* ok, now we calculate the checksum
 873                  * do it first so we can reuse buf :-) */
 874                 p=buf;
 875                 EVP_MD_CTX_init(&ctx);
 876                 EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL);
 877                 EVP_SignUpdate(&ctx,s->s2->key_material,
 878                                s->s2->key_material_length);
 879                 EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len);
 880                 n=i2d_X509(s->session->sess_cert->peer_key->x509,&p);
 881                 EVP_SignUpdate(&ctx,buf,(unsigned int)n);
 882
 883                 p=buf;
 884                 d=p+6;
 885                 *(p++)=SSL2_MT_CLIENT_CERTIFICATE;
 886                 *(p++)=SSL2_CT_X509_CERTIFICATE;
 887                 n=i2d_X509(s->cert->key->x509,&d);
 888                 s2n(n,p);
 889
 890                 if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey))
 891                         {
 892                         /* this is not good.  If things have failed it
 893                          * means there so something wrong with the key.
 894                          * We will continue with a 0 length signature
 895                          */
 896                         }
 897                 EVP_MD_CTX_cleanup(&ctx);
 898                 s2n(n,p);
 899                 d+=n;
 900
 901                 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D;
 902                 s->init_num=d-buf;
 903                 s->init_off=0;
 904                 }
 905         /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */
 906         return(ssl2_do_write(s));
 907         }
 908
 909 static int get_server_verify(SSL *s)
 910         {
 911         unsigned char *p;
 912         int i, n, len;
 913
 914         p=(unsigned char *)s->init_buf->data;
 915         if (s->state == SSL2_ST_GET_SERVER_VERIFY_A)
 916                 {
 917                 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num);
 918                 if (i < (1-s->init_num))
 919                         return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 920                 s->init_num += i;
 921
 922                 s->state= SSL2_ST_GET_SERVER_VERIFY_B;
 923                 if (*p != SSL2_MT_SERVER_VERIFY)
 924                         {
 925                         if (p[0] != SSL2_MT_ERROR)
 926                                 {
 927                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 928                                 SSLerr(SSL_F_GET_SERVER_VERIFY,
 929                                         SSL_R_READ_WRONG_PACKET_TYPE);
 930                                 }
 931                         else
 932                                 {
 933                                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR);
 934                                 /* try to read the error message */
 935                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 936                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 937                                 }
 938                         return(-1);
 939                         }
 940                 }
 941
 942         p=(unsigned char *)s->init_buf->data;
 943         len = 1 + s->s2->challenge_length;
 944         n =  len - s->init_num;
 945         i = ssl2_read(s,(char *)&(p[s->init_num]),n);
 946         if (i < n)
 947                 return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 948         if (s->msg_callback)
 949                 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */
 950         p += 1;
 951
 952         if (memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0)
 953                 {
 954                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 955                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT);
 956                 return(-1);
 957                 }
 958         return(1);
 959         }
 960
 961 static int get_server_finished(SSL *s)
 962         {
 963         unsigned char *buf;
 964         unsigned char *p;
 965         int i, n, len;
 966
 967         buf=(unsigned char *)s->init_buf->data;
 968         p=buf;
 969         if (s->state == SSL2_ST_GET_SERVER_FINISHED_A)
 970                 {
 971                 i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num);
 972                 if (i < (1-s->init_num))
 973                         return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
 974                 s->init_num += i;
 975
 976                 if (*p == SSL2_MT_REQUEST_CERTIFICATE)
 977                         {
 978                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A;
 979                         return(1);
 980                         }
 981                 else if (*p != SSL2_MT_SERVER_FINISHED)
 982                         {
 983                         if (p[0] != SSL2_MT_ERROR)
 984                                 {
 985                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 986                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE);
 987                                 }
 988                         else
 989                                 {
 990                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR);
 991                                 /* try to read the error message */
 992                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 993                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 994                                 }
 995                         return(-1);
 996                         }
 997                 s->state=SSL2_ST_GET_SERVER_FINISHED_B;
 998                 }
 999
1000         len = 1 + SSL2_SSL_SESSION_ID_LENGTH;
1001         n = len - s->init_num;
1002         i = ssl2_read(s,(char *)&(buf[s->init_num]), n);
1003         if (i < n) /* XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, that's the maximum */
1004                 return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
1005         s->init_num += i;
1006         if (s->msg_callback)
1007                 s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* SERVER-FINISHED */
1008
1009         if (!s->hit) /* new session */
1010                 {
1011                 /* new session-id */
1012                 /* Make sure we were not trying to re-use an old SSL_SESSION
1013                  * or bad things can happen */
1014                 /* ZZZZZZZZZZZZZ */
1015                 s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
1016                 memcpy(s->session->session_id,p+1,SSL2_SSL_SESSION_ID_LENGTH);
1017                 }
1018         else
1019                 {
1020                 if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG))
1021                         {
1022                         if ((s->session->session_id_length > sizeof s->session->session_id)
1023                             || (0 != memcmp(buf + 1, s->session->session_id,
1024                                             (unsigned int)s->session->session_id_length)))
1025                                 {
1026                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
1027                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT);
1028                                 return(-1);
1029                                 }
1030                         }
1031                 }
1032         s->state = SSL_ST_OK;
1033         return(1);
1034         }
1035
1036 /* loads in the certificate from the server */
1037 int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data)
1038         {
1039         STACK_OF(X509) *sk=NULL;
1040         EVP_PKEY *pkey=NULL;
1041         SESS_CERT *sc=NULL;
1042         int i;
1043         X509 *x509=NULL;
1044         int ret=0;
1045
1046         x509=d2i_X509(NULL,&data,(long)len);
1047         if (x509 == NULL)
1048                 {
1049                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB);
1050                 goto err;
1051                 }
1052
1053         if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509))
1054                 {
1055                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1056                 goto err;
1057                 }
1058
1059         i=ssl_verify_cert_chain(s,sk);
1060
1061         if ((s->verify_mode != SSL_VERIFY_NONE) && (!i))
1062                 {
1063                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1064                 goto err;
1065                 }
1066         ERR_clear_error(); /* but we keep s->verify_result */
1067         s->session->verify_result = s->verify_result;
1068
1069         /* server's cert for this session */
1070         sc=ssl_sess_cert_new();
1071         if (sc == NULL)
1072                 {
1073                 ret= -1;
1074                 goto err;
1075                 }
1076         if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1077         s->session->sess_cert=sc;
1078
1079         sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509;
1080         sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]);
1081
1082         pkey=X509_get_pubkey(x509);
1083         x509=NULL;
1084         if (pkey == NULL)
1085                 {
1086                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY);
1087                 goto err;
1088                 }
1089         if (pkey->type != EVP_PKEY_RSA)
1090                 {
1091                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA);
1092                 goto err;
1093                 }
1094
1095         if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE))
1096                 goto err;
1097         ret=1;
1098 err:
1099         sk_X509_free(sk);
1100         X509_free(x509);
1101         EVP_PKEY_free(pkey);
1102         return(ret);
1103         }
1104
1105 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
1106              unsigned char *to, int padding)
1107         {
1108         EVP_PKEY *pkey=NULL;
1109         int i= -1;
1110
1111         if ((sc == NULL) || (sc->peer_key->x509 == NULL) ||
1112                 ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL))
1113                 {
1114                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY);
1115                 return(-1);
1116                 }
1117         if (pkey->type != EVP_PKEY_RSA)
1118                 {
1119                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA);
1120                 goto end;
1121                 }
1122
1123         /* we have the public key */
1124         i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding);
1125         if (i < 0)
1126                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB);
1127 end:
1128         EVP_PKEY_free(pkey);
1129         return(i);
1130         }
1131 #else /* !OPENSSL_NO_SSL2 */
1132
1133 # if PEDANTIC
1134 static void *dummy=&dummy;
1135 # endif
1136
1137 #endif