1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libssl/src/s23_clnt.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,595 @@
1.4 +/* ssl/s23_clnt.c */
1.5 +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
1.6 + * All rights reserved.
1.7 + *
1.8 + * This package is an SSL implementation written
1.9 + * by Eric Young (eay@cryptsoft.com).
1.10 + * The implementation was written so as to conform with Netscapes SSL.
1.11 + *
1.12 + * This library is free for commercial and non-commercial use as long as
1.13 + * the following conditions are aheared to. The following conditions
1.14 + * apply to all code found in this distribution, be it the RC4, RSA,
1.15 + * lhash, DES, etc., code; not just the SSL code. The SSL documentation
1.16 + * included with this distribution is covered by the same copyright terms
1.17 + * except that the holder is Tim Hudson (tjh@cryptsoft.com).
1.18 + *
1.19 + * Copyright remains Eric Young's, and as such any Copyright notices in
1.20 + * the code are not to be removed.
1.21 + * If this package is used in a product, Eric Young should be given attribution
1.22 + * as the author of the parts of the library used.
1.23 + * This can be in the form of a textual message at program startup or
1.24 + * in documentation (online or textual) provided with the package.
1.25 + *
1.26 + * Redistribution and use in source and binary forms, with or without
1.27 + * modification, are permitted provided that the following conditions
1.28 + * are met:
1.29 + * 1. Redistributions of source code must retain the copyright
1.30 + * notice, this list of conditions and the following disclaimer.
1.31 + * 2. Redistributions in binary form must reproduce the above copyright
1.32 + * notice, this list of conditions and the following disclaimer in the
1.33 + * documentation and/or other materials provided with the distribution.
1.34 + * 3. All advertising materials mentioning features or use of this software
1.35 + * must display the following acknowledgement:
1.36 + * "This product includes cryptographic software written by
1.37 + * Eric Young (eay@cryptsoft.com)"
1.38 + * The word 'cryptographic' can be left out if the rouines from the library
1.39 + * being used are not cryptographic related :-).
1.40 + * 4. If you include any Windows specific code (or a derivative thereof) from
1.41 + * the apps directory (application code) you must include an acknowledgement:
1.42 + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
1.43 + *
1.44 + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
1.45 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.46 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.47 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1.48 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.49 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.50 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.51 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.52 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.53 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.54 + * SUCH DAMAGE.
1.55 + *
1.56 + * The licence and distribution terms for any publically available version or
1.57 + * derivative of this code cannot be changed. i.e. this code cannot simply be
1.58 + * copied and put under another distribution licence
1.59 + * [including the GNU Public Licence.]
1.60 + */
1.61 +/*
1.62 + © Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
1.63 + */
1.64 +
1.65 +#include <stdio.h>
1.66 +#include "ssl_locl.h"
1.67 +#include <openssl/buffer.h>
1.68 +#include <openssl/rand.h>
1.69 +#include <openssl/objects.h>
1.70 +#include <openssl/evp.h>
1.71 +
1.72 +#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
1.73 +#include "libssl_wsd.h"
1.74 +#endif
1.75 +
1.76 +#ifdef EMULATOR
1.77 +
1.78 + GET_STATIC_VAR_FROM_TLS(SSLv23_client_method_data,s23_clnt,SSL_METHOD)
1.79 +
1.80 + #define SSLv23_client_method_data (*GET_WSD_VAR_NAME(SSLv23_client_method_data,s23_clnt,s)())
1.81 +
1.82 +#endif
1.83 +static SSL_METHOD *ssl23_get_client_method(int ver);
1.84 +static int ssl23_client_hello(SSL *s);
1.85 +static int ssl23_get_server_hello(SSL *s);
1.86 +static SSL_METHOD *ssl23_get_client_method(int ver)
1.87 + {
1.88 +#ifndef OPENSSL_NO_SSL2
1.89 + if (ver == SSL2_VERSION)
1.90 + return(SSLv2_client_method());
1.91 +#endif
1.92 + if (ver == SSL3_VERSION)
1.93 + return(SSLv3_client_method());
1.94 + else if (ver == TLS1_VERSION)
1.95 + return(TLSv1_client_method());
1.96 + else
1.97 + return(NULL);
1.98 + }
1.99 +
1.100 +EXPORT_C IMPLEMENT_ssl23_meth_func(SSLv23_client_method,
1.101 + ssl_undefined_function,
1.102 + ssl23_connect,
1.103 + ssl23_get_client_method)
1.104 +
1.105 +int ssl23_connect(SSL *s)
1.106 + {
1.107 + BUF_MEM *buf=NULL;
1.108 + unsigned long Time=(unsigned long)time(NULL);
1.109 + void (*cb)(const SSL *ssl,int type,int val)=NULL;
1.110 + int ret= -1;
1.111 + int new_state,state;
1.112 +
1.113 + RAND_add(&Time,sizeof(Time),0);
1.114 + ERR_clear_error();
1.115 + clear_sys_error();
1.116 +
1.117 + if (s->info_callback != NULL)
1.118 + cb=s->info_callback;
1.119 + else if (s->ctx->info_callback != NULL)
1.120 + cb=s->ctx->info_callback;
1.121 +
1.122 + s->in_handshake++;
1.123 + if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
1.124 +
1.125 + for (;;)
1.126 + {
1.127 + state=s->state;
1.128 +
1.129 + switch(s->state)
1.130 + {
1.131 + case SSL_ST_BEFORE:
1.132 + case SSL_ST_CONNECT:
1.133 + case SSL_ST_BEFORE|SSL_ST_CONNECT:
1.134 + case SSL_ST_OK|SSL_ST_CONNECT:
1.135 +
1.136 + if (s->session != NULL)
1.137 + {
1.138 + SSLerr(SSL_F_SSL23_CONNECT,SSL_R_SSL23_DOING_SESSION_ID_REUSE);
1.139 + ret= -1;
1.140 + goto end;
1.141 + }
1.142 + s->server=0;
1.143 + if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
1.144 +
1.145 + /* s->version=TLS1_VERSION; */
1.146 + s->type=SSL_ST_CONNECT;
1.147 +
1.148 + if (s->init_buf == NULL)
1.149 + {
1.150 + if ((buf=BUF_MEM_new()) == NULL)
1.151 + {
1.152 + ret= -1;
1.153 + goto end;
1.154 + }
1.155 + if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
1.156 + {
1.157 + ret= -1;
1.158 + goto end;
1.159 + }
1.160 + s->init_buf=buf;
1.161 + buf=NULL;
1.162 + }
1.163 +
1.164 + if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
1.165 +
1.166 + ssl3_init_finished_mac(s);
1.167 +
1.168 + s->state=SSL23_ST_CW_CLNT_HELLO_A;
1.169 + s->ctx->stats.sess_connect++;
1.170 + s->init_num=0;
1.171 + break;
1.172 +
1.173 + case SSL23_ST_CW_CLNT_HELLO_A:
1.174 + case SSL23_ST_CW_CLNT_HELLO_B:
1.175 +
1.176 + s->shutdown=0;
1.177 + ret=ssl23_client_hello(s);
1.178 + if (ret <= 0) goto end;
1.179 + s->state=SSL23_ST_CR_SRVR_HELLO_A;
1.180 + s->init_num=0;
1.181 +
1.182 + break;
1.183 +
1.184 + case SSL23_ST_CR_SRVR_HELLO_A:
1.185 + case SSL23_ST_CR_SRVR_HELLO_B:
1.186 + ret=ssl23_get_server_hello(s);
1.187 + if (ret >= 0) cb=NULL;
1.188 + goto end;
1.189 + /* break; */
1.190 +
1.191 + default:
1.192 + SSLerr(SSL_F_SSL23_CONNECT,SSL_R_UNKNOWN_STATE);
1.193 + ret= -1;
1.194 + goto end;
1.195 + /* break; */
1.196 + }
1.197 +
1.198 + if (s->debug) { (void)BIO_flush(s->wbio); }
1.199 +
1.200 + if ((cb != NULL) && (s->state != state))
1.201 + {
1.202 + new_state=s->state;
1.203 + s->state=state;
1.204 + cb(s,SSL_CB_CONNECT_LOOP,1);
1.205 + s->state=new_state;
1.206 + }
1.207 + }
1.208 +end:
1.209 + s->in_handshake--;
1.210 + if (buf != NULL)
1.211 + BUF_MEM_free(buf);
1.212 + if (cb != NULL)
1.213 + cb(s,SSL_CB_CONNECT_EXIT,ret);
1.214 + return(ret);
1.215 + }
1.216 +
1.217 +
1.218 +static int ssl23_client_hello(SSL *s)
1.219 + {
1.220 + unsigned char *buf;
1.221 + unsigned char *p,*d;
1.222 + int i,j,ch_len;
1.223 + unsigned long Time,l;
1.224 + int ssl2_compat;
1.225 + int version = 0, version_major, version_minor;
1.226 + SSL_COMP *comp;
1.227 + int ret;
1.228 +
1.229 + ssl2_compat = (s->options & SSL_OP_NO_SSLv2) ? 0 : 1;
1.230 +
1.231 + if (!(s->options & SSL_OP_NO_TLSv1))
1.232 + {
1.233 + version = TLS1_VERSION;
1.234 + }
1.235 + else if (!(s->options & SSL_OP_NO_SSLv3))
1.236 + {
1.237 + version = SSL3_VERSION;
1.238 + }
1.239 + else if (!(s->options & SSL_OP_NO_SSLv2))
1.240 + {
1.241 + version = SSL2_VERSION;
1.242 + }
1.243 +
1.244 + buf=(unsigned char *)s->init_buf->data;
1.245 + if (s->state == SSL23_ST_CW_CLNT_HELLO_A)
1.246 + {
1.247 +#if 0
1.248 + /* don't reuse session-id's */
1.249 + if (!ssl_get_new_session(s,0))
1.250 + {
1.251 + return(-1);
1.252 + }
1.253 +#endif
1.254 +
1.255 + p=s->s3->client_random;
1.256 + Time=(unsigned long)time(NULL); /* Time */
1.257 + l2n(Time,p);
1.258 + if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
1.259 + return -1;
1.260 +
1.261 + if (version == TLS1_VERSION)
1.262 + {
1.263 + version_major = TLS1_VERSION_MAJOR;
1.264 + version_minor = TLS1_VERSION_MINOR;
1.265 + }
1.266 + else if (version == SSL3_VERSION)
1.267 + {
1.268 + version_major = SSL3_VERSION_MAJOR;
1.269 + version_minor = SSL3_VERSION_MINOR;
1.270 + }
1.271 + else if (version == SSL2_VERSION)
1.272 + {
1.273 + version_major = SSL2_VERSION_MAJOR;
1.274 + version_minor = SSL2_VERSION_MINOR;
1.275 + }
1.276 + else
1.277 + {
1.278 + SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_PROTOCOLS_AVAILABLE);
1.279 + return(-1);
1.280 + }
1.281 +
1.282 + s->client_version = version;
1.283 +
1.284 + if (ssl2_compat)
1.285 + {
1.286 + /* create SSL 2.0 compatible Client Hello */
1.287 +
1.288 + /* two byte record header will be written last */
1.289 + d = &(buf[2]);
1.290 + p = d + 9; /* leave space for message type, version, individual length fields */
1.291 +
1.292 + *(d++) = SSL2_MT_CLIENT_HELLO;
1.293 + *(d++) = version_major;
1.294 + *(d++) = version_minor;
1.295 +
1.296 + /* Ciphers supported */
1.297 + i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),p,0);
1.298 + if (i == 0)
1.299 + {
1.300 + /* no ciphers */
1.301 + SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
1.302 + return -1;
1.303 + }
1.304 + s2n(i,d);
1.305 + p+=i;
1.306 +
1.307 + /* put in the session-id length (zero since there is no reuse) */
1.308 +#if 0
1.309 + s->session->session_id_length=0;
1.310 +#endif
1.311 + s2n(0,d);
1.312 +
1.313 + if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
1.314 + ch_len=SSL2_CHALLENGE_LENGTH;
1.315 + else
1.316 + ch_len=SSL2_MAX_CHALLENGE_LENGTH;
1.317 +
1.318 + /* write out sslv2 challenge */
1.319 + if (SSL3_RANDOM_SIZE < ch_len)
1.320 + i=SSL3_RANDOM_SIZE;
1.321 + else
1.322 + i=ch_len;
1.323 + s2n(i,d);
1.324 + memset(&(s->s3->client_random[0]),0,SSL3_RANDOM_SIZE);
1.325 + if (RAND_pseudo_bytes(&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i) <= 0)
1.326 + return -1;
1.327 +
1.328 + memcpy(p,&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
1.329 + p+=i;
1.330 +
1.331 + i= p- &(buf[2]);
1.332 + buf[0]=((i>>8)&0xff)|0x80;
1.333 + buf[1]=(i&0xff);
1.334 +
1.335 + /* number of bytes to write */
1.336 + s->init_num=i+2;
1.337 + s->init_off=0;
1.338 +
1.339 + ssl3_finish_mac(s,&(buf[2]),i);
1.340 + }
1.341 + else
1.342 + {
1.343 + /* create Client Hello in SSL 3.0/TLS 1.0 format */
1.344 +
1.345 + /* do the record header (5 bytes) and handshake message header (4 bytes) last */
1.346 + d = p = &(buf[9]);
1.347 +
1.348 + *(p++) = version_major;
1.349 + *(p++) = version_minor;
1.350 +
1.351 + /* Random stuff */
1.352 + memcpy(p, s->s3->client_random, SSL3_RANDOM_SIZE);
1.353 + p += SSL3_RANDOM_SIZE;
1.354 +
1.355 + /* Session ID (zero since there is no reuse) */
1.356 + *(p++) = 0;
1.357 +
1.358 + /* Ciphers supported (using SSL 3.0/TLS 1.0 format) */
1.359 + i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),ssl3_put_cipher_by_char);
1.360 + if (i == 0)
1.361 + {
1.362 + SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
1.363 + return -1;
1.364 + }
1.365 + s2n(i,p);
1.366 + p+=i;
1.367 +
1.368 + /* COMPRESSION */
1.369 + if (s->ctx->comp_methods == NULL)
1.370 + j=0;
1.371 + else
1.372 + j=sk_SSL_COMP_num(s->ctx->comp_methods);
1.373 + *(p++)=1+j;
1.374 + for (i=0; i<j; i++)
1.375 + {
1.376 + comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
1.377 + *(p++)=comp->id;
1.378 + }
1.379 + *(p++)=0; /* Add the NULL method */
1.380 +
1.381 + l = p-d;
1.382 + *p = 42;
1.383 +
1.384 + /* fill in 4-byte handshake header */
1.385 + d=&(buf[5]);
1.386 + *(d++)=SSL3_MT_CLIENT_HELLO;
1.387 + l2n3(l,d);
1.388 +
1.389 + l += 4;
1.390 +
1.391 + if (l > SSL3_RT_MAX_PLAIN_LENGTH)
1.392 + {
1.393 + SSLerr(SSL_F_SSL23_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
1.394 + return -1;
1.395 + }
1.396 +
1.397 + /* fill in 5-byte record header */
1.398 + d=buf;
1.399 + *(d++) = SSL3_RT_HANDSHAKE;
1.400 + *(d++) = version_major;
1.401 + *(d++) = version_minor; /* arguably we should send the *lowest* suported version here
1.402 + * (indicating, e.g., TLS 1.0 in "SSL 3.0 format") */
1.403 + s2n((int)l,d);
1.404 +
1.405 + /* number of bytes to write */
1.406 + s->init_num=p-buf;
1.407 + s->init_off=0;
1.408 +
1.409 + ssl3_finish_mac(s,&(buf[5]), s->init_num - 5);
1.410 + }
1.411 +
1.412 + s->state=SSL23_ST_CW_CLNT_HELLO_B;
1.413 + s->init_off=0;
1.414 + }
1.415 +
1.416 + /* SSL3_ST_CW_CLNT_HELLO_B */
1.417 + ret = ssl23_write_bytes(s);
1.418 +
1.419 + if ((ret >= 2) && s->msg_callback)
1.420 + {
1.421 + /* Client Hello has been sent; tell msg_callback */
1.422 +
1.423 + if (ssl2_compat)
1.424 + s->msg_callback(1, SSL2_VERSION, 0, s->init_buf->data+2, ret-2, s, s->msg_callback_arg);
1.425 + else
1.426 + s->msg_callback(1, version, SSL3_RT_HANDSHAKE, s->init_buf->data+5, ret-5, s, s->msg_callback_arg);
1.427 + }
1.428 +
1.429 + return ret;
1.430 + }
1.431 +
1.432 +static int ssl23_get_server_hello(SSL *s)
1.433 + {
1.434 + char buf[8];
1.435 + unsigned char *p;
1.436 + int i;
1.437 + int n;
1.438 +
1.439 + n=ssl23_read_bytes(s,7);
1.440 +
1.441 + if (n != 7) return(n);
1.442 + p=s->packet;
1.443 +
1.444 + memcpy(buf,p,n);
1.445 +
1.446 + if ((p[0] & 0x80) && (p[2] == SSL2_MT_SERVER_HELLO) &&
1.447 + (p[5] == 0x00) && (p[6] == 0x02))
1.448 + {
1.449 +#ifdef OPENSSL_NO_SSL2
1.450 + SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
1.451 + goto err;
1.452 +#else
1.453 + /* we are talking sslv2 */
1.454 + /* we need to clean up the SSLv3 setup and put in the
1.455 + * sslv2 stuff. */
1.456 + int ch_len;
1.457 +
1.458 + if (s->options & SSL_OP_NO_SSLv2)
1.459 + {
1.460 + SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
1.461 + goto err;
1.462 + }
1.463 + if (s->s2 == NULL)
1.464 + {
1.465 + if (!ssl2_new(s))
1.466 + goto err;
1.467 + }
1.468 + else
1.469 + ssl2_clear(s);
1.470 +
1.471 + if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
1.472 + ch_len=SSL2_CHALLENGE_LENGTH;
1.473 + else
1.474 + ch_len=SSL2_MAX_CHALLENGE_LENGTH;
1.475 +
1.476 + /* write out sslv2 challenge */
1.477 + i=(SSL3_RANDOM_SIZE < ch_len)
1.478 + ?SSL3_RANDOM_SIZE:ch_len;
1.479 + s->s2->challenge_length=i;
1.480 + memcpy(s->s2->challenge,
1.481 + &(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
1.482 +
1.483 + if (s->s3 != NULL) ssl3_free(s);
1.484 +
1.485 + if (!BUF_MEM_grow_clean(s->init_buf,
1.486 + SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
1.487 + {
1.488 + SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB);
1.489 + goto err;
1.490 + }
1.491 +
1.492 + s->state=SSL2_ST_GET_SERVER_HELLO_A;
1.493 + if (!(s->client_version == SSL2_VERSION))
1.494 + /* use special padding (SSL 3.0 draft/RFC 2246, App. E.2) */
1.495 + s->s2->ssl2_rollback=1;
1.496 +
1.497 + /* setup the 5 bytes we have read so we get them from
1.498 + * the sslv2 buffer */
1.499 + s->rstate=SSL_ST_READ_HEADER;
1.500 + s->packet_length=n;
1.501 + s->packet= &(s->s2->rbuf[0]);
1.502 + memcpy(s->packet,buf,n);
1.503 + s->s2->rbuf_left=n;
1.504 + s->s2->rbuf_offs=0;
1.505 +
1.506 + /* we have already written one */
1.507 + s->s2->write_sequence=1;
1.508 +
1.509 + s->method=SSLv2_client_method();
1.510 + s->handshake_func=s->method->ssl_connect;
1.511 +#endif
1.512 + }
1.513 + else if ((p[0] == SSL3_RT_HANDSHAKE) &&
1.514 + (p[1] == SSL3_VERSION_MAJOR) &&
1.515 + ((p[2] == SSL3_VERSION_MINOR) ||
1.516 + (p[2] == TLS1_VERSION_MINOR)) &&
1.517 + (p[5] == SSL3_MT_SERVER_HELLO))
1.518 + {
1.519 + /* we have sslv3 or tls1 */
1.520 +
1.521 + if (!ssl_init_wbio_buffer(s,1)) goto err;
1.522 +
1.523 + /* we are in this state */
1.524 + s->state=SSL3_ST_CR_SRVR_HELLO_A;
1.525 +
1.526 + /* put the 5 bytes we have read into the input buffer
1.527 + * for SSLv3 */
1.528 + s->rstate=SSL_ST_READ_HEADER;
1.529 + s->packet_length=n;
1.530 + s->packet= &(s->s3->rbuf.buf[0]);
1.531 + memcpy(s->packet,buf,n);
1.532 + s->s3->rbuf.left=n;
1.533 + s->s3->rbuf.offset=0;
1.534 +
1.535 + if ((p[2] == SSL3_VERSION_MINOR) &&
1.536 + !(s->options & SSL_OP_NO_SSLv3))
1.537 + {
1.538 + s->version=SSL3_VERSION;
1.539 + s->method=SSLv3_client_method();
1.540 + }
1.541 + else if ((p[2] == TLS1_VERSION_MINOR) &&
1.542 + !(s->options & SSL_OP_NO_TLSv1))
1.543 + {
1.544 + s->version=TLS1_VERSION;
1.545 + s->method=TLSv1_client_method();
1.546 + }
1.547 + else
1.548 + {
1.549 + SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
1.550 + goto err;
1.551 + }
1.552 +
1.553 + s->handshake_func=s->method->ssl_connect;
1.554 + }
1.555 + else if ((p[0] == SSL3_RT_ALERT) &&
1.556 + (p[1] == SSL3_VERSION_MAJOR) &&
1.557 + ((p[2] == SSL3_VERSION_MINOR) ||
1.558 + (p[2] == TLS1_VERSION_MINOR)) &&
1.559 + (p[3] == 0) &&
1.560 + (p[4] == 2))
1.561 + {
1.562 + void (*cb)(const SSL *ssl,int type,int val)=NULL;
1.563 + int j;
1.564 +
1.565 + /* An alert */
1.566 + if (s->info_callback != NULL)
1.567 + cb=s->info_callback;
1.568 + else if (s->ctx->info_callback != NULL)
1.569 + cb=s->ctx->info_callback;
1.570 +
1.571 + i=p[5];
1.572 + if (cb != NULL)
1.573 + {
1.574 + j=(i<<8)|p[6];
1.575 + cb(s,SSL_CB_READ_ALERT,j);
1.576 + }
1.577 +
1.578 + s->rwstate=SSL_NOTHING;
1.579 + SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_AD_REASON_OFFSET+p[6]);
1.580 + goto err;
1.581 + }
1.582 + else
1.583 + {
1.584 + SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNKNOWN_PROTOCOL);
1.585 + goto err;
1.586 + }
1.587 + s->init_num=0;
1.588 +
1.589 + /* Since, if we are sending a ssl23 client hello, we are not
1.590 + * reusing a session-id */
1.591 + if (!ssl_get_new_session(s,0))
1.592 + goto err;
1.593 +
1.594 + return(SSL_connect(s));
1.595 +err:
1.596 + return(-1);
1.597 + }
1.598 +