2005-04-26 16:02:40 +00:00
|
|
|
/* ssl/d1_srvr.c */
|
|
|
|
/*
|
|
|
|
* DTLS implementation written by Nagendra Modadugu
|
|
|
|
* (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
|
|
|
|
*/
|
|
|
|
/* ====================================================================
|
2007-02-17 06:45:38 +00:00
|
|
|
* Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
|
2005-04-26 16:02:40 +00:00
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
*
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
*
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in
|
|
|
|
* the documentation and/or other materials provided with the
|
|
|
|
* distribution.
|
|
|
|
*
|
|
|
|
* 3. All advertising materials mentioning features or use of this
|
|
|
|
* software must display the following acknowledgment:
|
|
|
|
* "This product includes software developed by the OpenSSL Project
|
|
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
|
|
*
|
|
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
|
|
* endorse or promote products derived from this software without
|
|
|
|
* prior written permission. For written permission, please contact
|
|
|
|
* openssl-core@OpenSSL.org.
|
|
|
|
*
|
|
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
|
|
* permission of the OpenSSL Project.
|
|
|
|
*
|
|
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
|
|
* acknowledgment:
|
|
|
|
* "This product includes software developed by the OpenSSL Project
|
|
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
* ====================================================================
|
|
|
|
*
|
|
|
|
* This product includes cryptographic software written by Eric Young
|
|
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
|
|
* Hudson (tjh@cryptsoft.com).
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* This package is an SSL implementation written
|
|
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
|
|
*
|
|
|
|
* This library is free for commercial and non-commercial use as long as
|
|
|
|
* the following conditions are aheared to. The following conditions
|
|
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
|
|
* included with this distribution is covered by the same copyright terms
|
|
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
|
|
*
|
|
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
|
|
* the code are not to be removed.
|
|
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
|
|
* as the author of the parts of the library used.
|
|
|
|
* This can be in the form of a textual message at program startup or
|
|
|
|
* in documentation (online or textual) provided with the package.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
|
|
* must display the following acknowledgement:
|
|
|
|
* "This product includes cryptographic software written by
|
|
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
|
|
* being used are not cryptographic related :-).
|
|
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
* SUCH DAMAGE.
|
|
|
|
*
|
|
|
|
* The licence and distribution terms for any publically available version or
|
|
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
|
|
* copied and put under another distribution licence
|
|
|
|
* [including the GNU Public Licence.]
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "ssl_locl.h"
|
|
|
|
#include <openssl/buffer.h>
|
|
|
|
#include <openssl/rand.h>
|
|
|
|
#include <openssl/objects.h>
|
|
|
|
#include <openssl/evp.h>
|
|
|
|
#include <openssl/x509.h>
|
|
|
|
#include <openssl/md5.h>
|
2008-03-16 21:05:46 +00:00
|
|
|
#include <openssl/bn.h>
|
2005-07-16 12:37:36 +00:00
|
|
|
#ifndef OPENSSL_NO_DH
|
|
|
|
#include <openssl/dh.h>
|
|
|
|
#endif
|
2005-04-26 16:02:40 +00:00
|
|
|
|
2005-08-14 21:48:33 +00:00
|
|
|
static const SSL_METHOD *dtls1_get_server_method(int ver);
|
2005-04-26 16:02:40 +00:00
|
|
|
static int dtls1_send_hello_verify_request(SSL *s);
|
|
|
|
|
2005-08-14 21:48:33 +00:00
|
|
|
static const SSL_METHOD *dtls1_get_server_method(int ver)
|
2005-04-26 16:02:40 +00:00
|
|
|
{
|
|
|
|
if (ver == DTLS1_VERSION)
|
|
|
|
return(DTLSv1_server_method());
|
2013-03-20 15:49:14 +00:00
|
|
|
else if (ver == DTLS1_2_VERSION)
|
|
|
|
return(DTLSv1_2_server_method());
|
2005-04-26 16:02:40 +00:00
|
|
|
else
|
|
|
|
return(NULL);
|
|
|
|
}
|
|
|
|
|
2013-03-19 15:51:26 +00:00
|
|
|
IMPLEMENT_dtls1_meth_func(DTLS1_VERSION,
|
|
|
|
DTLSv1_server_method,
|
2005-08-05 23:56:11 +00:00
|
|
|
dtls1_accept,
|
|
|
|
ssl_undefined_function,
|
2013-03-19 15:51:26 +00:00
|
|
|
dtls1_get_server_method,
|
|
|
|
DTLSv1_enc_data)
|
2005-04-26 16:02:40 +00:00
|
|
|
|
2013-03-20 15:49:14 +00:00
|
|
|
IMPLEMENT_dtls1_meth_func(DTLS1_2_VERSION,
|
|
|
|
DTLSv1_2_server_method,
|
|
|
|
dtls1_accept,
|
|
|
|
ssl_undefined_function,
|
|
|
|
dtls1_get_server_method,
|
|
|
|
DTLSv1_2_enc_data)
|
|
|
|
|
2013-04-06 14:50:12 +00:00
|
|
|
IMPLEMENT_dtls1_meth_func(DTLS_ANY_VERSION,
|
|
|
|
DTLS_server_method,
|
|
|
|
dtls1_accept,
|
|
|
|
ssl_undefined_function,
|
|
|
|
dtls1_get_server_method,
|
|
|
|
DTLSv1_2_enc_data)
|
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
int dtls1_accept(SSL *s)
|
|
|
|
{
|
|
|
|
BUF_MEM *buf;
|
2007-02-19 14:53:18 +00:00
|
|
|
unsigned long Time=(unsigned long)time(NULL);
|
2005-04-26 16:02:40 +00:00
|
|
|
void (*cb)(const SSL *ssl,int type,int val)=NULL;
|
2007-02-17 06:45:38 +00:00
|
|
|
unsigned long alg_k;
|
2005-04-26 16:02:40 +00:00
|
|
|
int ret= -1;
|
|
|
|
int new_state,state,skip=0;
|
2011-05-25 14:30:05 +00:00
|
|
|
int listen;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
unsigned char sctpauthkey[64];
|
|
|
|
char labelbuffer[sizeof(DTLS1_SCTP_AUTH_LABEL)];
|
|
|
|
#endif
|
2005-04-26 16:02:40 +00:00
|
|
|
|
|
|
|
RAND_add(&Time,sizeof(Time),0);
|
|
|
|
ERR_clear_error();
|
|
|
|
clear_sys_error();
|
|
|
|
|
|
|
|
if (s->info_callback != NULL)
|
|
|
|
cb=s->info_callback;
|
|
|
|
else if (s->ctx->info_callback != NULL)
|
|
|
|
cb=s->ctx->info_callback;
|
2011-05-25 14:30:05 +00:00
|
|
|
|
|
|
|
listen = s->d1->listen;
|
2005-04-26 16:02:40 +00:00
|
|
|
|
|
|
|
/* init things to blank */
|
|
|
|
s->in_handshake++;
|
|
|
|
if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
|
|
|
|
|
2011-07-20 15:17:42 +00:00
|
|
|
s->d1->listen = listen;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
/* Notify SCTP BIO socket to enter handshake
|
|
|
|
* mode and prevent stream identifier other
|
|
|
|
* than 0. Will be ignored if no SCTP is used.
|
|
|
|
*/
|
|
|
|
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE, s->in_handshake, NULL);
|
|
|
|
#endif
|
2011-07-20 15:17:42 +00:00
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
if (s->cert == NULL)
|
|
|
|
{
|
2005-04-26 18:08:00 +00:00
|
|
|
SSLerr(SSL_F_DTLS1_ACCEPT,SSL_R_NO_CERTIFICATE_SET);
|
2005-04-26 16:02:40 +00:00
|
|
|
return(-1);
|
|
|
|
}
|
|
|
|
|
2011-12-31 23:00:36 +00:00
|
|
|
#ifndef OPENSSL_NO_HEARTBEATS
|
|
|
|
/* If we're awaiting a HeartbeatResponse, pretend we
|
|
|
|
* already got and don't await it anymore, because
|
|
|
|
* Heartbeats don't make sense during handshakes anyway.
|
|
|
|
*/
|
|
|
|
if (s->tlsext_hb_pending)
|
|
|
|
{
|
|
|
|
dtls1_stop_timer(s);
|
|
|
|
s->tlsext_hb_pending = 0;
|
|
|
|
s->tlsext_hb_seq++;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
for (;;)
|
|
|
|
{
|
|
|
|
state=s->state;
|
|
|
|
|
|
|
|
switch (s->state)
|
|
|
|
{
|
|
|
|
case SSL_ST_RENEGOTIATE:
|
2010-08-27 12:10:12 +00:00
|
|
|
s->renegotiate=1;
|
2005-04-26 16:02:40 +00:00
|
|
|
/* s->state=SSL_ST_ACCEPT; */
|
|
|
|
|
|
|
|
case SSL_ST_BEFORE:
|
|
|
|
case SSL_ST_ACCEPT:
|
|
|
|
case SSL_ST_BEFORE|SSL_ST_ACCEPT:
|
|
|
|
case SSL_ST_OK|SSL_ST_ACCEPT:
|
|
|
|
|
|
|
|
s->server=1;
|
|
|
|
if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
|
|
|
|
|
|
|
|
if ((s->version & 0xff00) != (DTLS1_VERSION & 0xff00))
|
|
|
|
{
|
2005-04-26 18:08:00 +00:00
|
|
|
SSLerr(SSL_F_DTLS1_ACCEPT, ERR_R_INTERNAL_ERROR);
|
2005-04-26 16:02:40 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
s->type=SSL_ST_ACCEPT;
|
|
|
|
|
|
|
|
if (s->init_buf == NULL)
|
|
|
|
{
|
|
|
|
if ((buf=BUF_MEM_new()) == NULL)
|
|
|
|
{
|
|
|
|
ret= -1;
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
|
|
|
|
{
|
2014-12-12 11:03:00 +00:00
|
|
|
BUF_MEM_free(buf);
|
2005-04-26 16:02:40 +00:00
|
|
|
ret= -1;
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
s->init_buf=buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!ssl3_setup_buffers(s))
|
|
|
|
{
|
|
|
|
ret= -1;
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
|
|
|
s->init_num=0;
|
2014-11-19 16:01:36 +00:00
|
|
|
s->d1->change_cipher_spec_ok = 0;
|
|
|
|
/* Should have been reset by ssl3_get_finished, too. */
|
|
|
|
s->s3->change_cipher_spec = 0;
|
2005-04-26 16:02:40 +00:00
|
|
|
|
|
|
|
if (s->state != SSL_ST_RENEGOTIATE)
|
|
|
|
{
|
|
|
|
/* Ok, we now need to push on a buffering BIO so that
|
|
|
|
* the output is sent in a way that TCP likes :-)
|
2011-12-25 14:45:40 +00:00
|
|
|
* ...but not with SCTP :-)
|
2005-04-26 16:02:40 +00:00
|
|
|
*/
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
if (!BIO_dgram_is_sctp(SSL_get_wbio(s)))
|
|
|
|
#endif
|
|
|
|
if (!ssl_init_wbio_buffer(s,1)) { ret= -1; goto end; }
|
2005-04-26 16:02:40 +00:00
|
|
|
|
|
|
|
ssl3_init_finished_mac(s);
|
|
|
|
s->state=SSL3_ST_SR_CLNT_HELLO_A;
|
|
|
|
s->ctx->stats.sess_accept++;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* s->state == SSL_ST_RENEGOTIATE,
|
|
|
|
* we will just send a HelloRequest */
|
|
|
|
s->ctx->stats.sess_accept_renegotiate++;
|
|
|
|
s->state=SSL3_ST_SW_HELLO_REQ_A;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SW_HELLO_REQ_A:
|
|
|
|
case SSL3_ST_SW_HELLO_REQ_B:
|
|
|
|
|
|
|
|
s->shutdown=0;
|
2013-08-13 17:53:19 +00:00
|
|
|
dtls1_clear_record_buffer(s);
|
2009-05-15 22:58:13 +00:00
|
|
|
dtls1_start_timer(s);
|
2013-03-11 15:34:28 +00:00
|
|
|
ret=ssl3_send_hello_request(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
if (ret <= 0) goto end;
|
2013-08-13 17:53:19 +00:00
|
|
|
s->s3->tmp.next_state=SSL3_ST_SR_CLNT_HELLO_A;
|
2005-04-26 16:02:40 +00:00
|
|
|
s->state=SSL3_ST_SW_FLUSH;
|
|
|
|
s->init_num=0;
|
|
|
|
|
|
|
|
ssl3_init_finished_mac(s);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SW_HELLO_REQ_C:
|
|
|
|
s->state=SSL_ST_OK;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SR_CLNT_HELLO_A:
|
|
|
|
case SSL3_ST_SR_CLNT_HELLO_B:
|
|
|
|
case SSL3_ST_SR_CLNT_HELLO_C:
|
|
|
|
|
|
|
|
s->shutdown=0;
|
|
|
|
ret=ssl3_get_client_hello(s);
|
|
|
|
if (ret <= 0) goto end;
|
2009-05-15 22:58:13 +00:00
|
|
|
dtls1_stop_timer(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
|
2009-09-04 17:42:06 +00:00
|
|
|
if (ret == 1 && (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE))
|
2005-04-26 16:02:40 +00:00
|
|
|
s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A;
|
|
|
|
else
|
|
|
|
s->state = SSL3_ST_SW_SRVR_HELLO_A;
|
|
|
|
|
|
|
|
s->init_num=0;
|
2009-09-09 17:05:42 +00:00
|
|
|
|
2011-07-20 15:17:42 +00:00
|
|
|
/* Reflect ClientHello sequence to remain stateless while listening */
|
|
|
|
if (listen)
|
|
|
|
{
|
|
|
|
memcpy(s->s3->write_sequence, s->s3->read_sequence, sizeof(s->s3->write_sequence));
|
|
|
|
}
|
|
|
|
|
2009-09-09 17:05:42 +00:00
|
|
|
/* If we're just listening, stop here */
|
2011-05-25 14:30:05 +00:00
|
|
|
if (listen && s->state == SSL3_ST_SW_SRVR_HELLO_A)
|
2009-09-09 17:05:42 +00:00
|
|
|
{
|
|
|
|
ret = 2;
|
|
|
|
s->d1->listen = 0;
|
2011-04-03 16:25:54 +00:00
|
|
|
/* Set expected sequence numbers
|
|
|
|
* to continue the handshake.
|
|
|
|
*/
|
|
|
|
s->d1->handshake_read_seq = 2;
|
|
|
|
s->d1->handshake_write_seq = 1;
|
|
|
|
s->d1->next_handshake_write_seq = 1;
|
2009-09-09 17:05:42 +00:00
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A:
|
|
|
|
case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B:
|
|
|
|
|
|
|
|
ret = dtls1_send_hello_verify_request(s);
|
|
|
|
if ( ret <= 0) goto end;
|
|
|
|
s->state=SSL3_ST_SW_FLUSH;
|
|
|
|
s->s3->tmp.next_state=SSL3_ST_SR_CLNT_HELLO_A;
|
2007-09-30 19:34:36 +00:00
|
|
|
|
|
|
|
/* HelloVerifyRequest resets Finished MAC */
|
2009-04-19 18:03:13 +00:00
|
|
|
if (s->version != DTLS1_BAD_VER)
|
|
|
|
ssl3_init_finished_mac(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
break;
|
|
|
|
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
case DTLS1_SCTP_ST_SR_READ_SOCK:
|
|
|
|
|
|
|
|
if (BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s)))
|
|
|
|
{
|
|
|
|
s->s3->in_read_app_data=2;
|
|
|
|
s->rwstate=SSL_READING;
|
|
|
|
BIO_clear_retry_flags(SSL_get_rbio(s));
|
|
|
|
BIO_set_retry_read(SSL_get_rbio(s));
|
|
|
|
ret = -1;
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
|
|
|
s->state=SSL3_ST_SR_FINISHED_A;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DTLS1_SCTP_ST_SW_WRITE_SOCK:
|
|
|
|
ret = BIO_dgram_sctp_wait_for_dry(SSL_get_wbio(s));
|
|
|
|
if (ret < 0) goto end;
|
|
|
|
|
|
|
|
if (ret == 0)
|
|
|
|
{
|
|
|
|
if (s->d1->next_state != SSL_ST_OK)
|
|
|
|
{
|
|
|
|
s->s3->in_read_app_data=2;
|
|
|
|
s->rwstate=SSL_READING;
|
|
|
|
BIO_clear_retry_flags(SSL_get_rbio(s));
|
|
|
|
BIO_set_retry_read(SSL_get_rbio(s));
|
|
|
|
ret = -1;
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
s->state=s->d1->next_state;
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
case SSL3_ST_SW_SRVR_HELLO_A:
|
|
|
|
case SSL3_ST_SW_SRVR_HELLO_B:
|
2010-08-27 12:10:12 +00:00
|
|
|
s->renegotiate = 2;
|
2009-05-15 22:58:13 +00:00
|
|
|
dtls1_start_timer(s);
|
2013-03-11 15:34:28 +00:00
|
|
|
ret=ssl3_send_server_hello(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
if (ret <= 0) goto end;
|
|
|
|
|
|
|
|
if (s->hit)
|
2009-12-08 11:38:18 +00:00
|
|
|
{
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
/* Add new shared key for SCTP-Auth,
|
|
|
|
* will be ignored if no SCTP used.
|
|
|
|
*/
|
|
|
|
snprintf((char*) labelbuffer, sizeof(DTLS1_SCTP_AUTH_LABEL),
|
|
|
|
DTLS1_SCTP_AUTH_LABEL);
|
|
|
|
|
|
|
|
SSL_export_keying_material(s, sctpauthkey,
|
|
|
|
sizeof(sctpauthkey), labelbuffer,
|
|
|
|
sizeof(labelbuffer), NULL, 0, 0);
|
|
|
|
|
|
|
|
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY,
|
|
|
|
sizeof(sctpauthkey), sctpauthkey);
|
|
|
|
#endif
|
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
2009-12-08 11:38:18 +00:00
|
|
|
if (s->tlsext_ticket_expected)
|
|
|
|
s->state=SSL3_ST_SW_SESSION_TICKET_A;
|
|
|
|
else
|
|
|
|
s->state=SSL3_ST_SW_CHANGE_A;
|
|
|
|
#else
|
2011-12-25 14:45:40 +00:00
|
|
|
s->state=SSL3_ST_SW_CHANGE_A;
|
2009-12-08 11:38:18 +00:00
|
|
|
#endif
|
2011-12-25 14:45:40 +00:00
|
|
|
}
|
2005-04-26 16:02:40 +00:00
|
|
|
else
|
|
|
|
s->state=SSL3_ST_SW_CERT_A;
|
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SW_CERT_A:
|
|
|
|
case SSL3_ST_SW_CERT_B:
|
2009-05-31 17:11:24 +00:00
|
|
|
/* Check if it is anon DH or normal PSK */
|
|
|
|
if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
|
|
|
|
&& !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
|
2005-04-26 16:02:40 +00:00
|
|
|
{
|
2009-05-15 22:58:13 +00:00
|
|
|
dtls1_start_timer(s);
|
2013-03-11 15:34:28 +00:00
|
|
|
ret=ssl3_send_server_certificate(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
if (ret <= 0) goto end;
|
2009-12-08 11:38:18 +00:00
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
|
|
if (s->tlsext_status_expected)
|
|
|
|
s->state=SSL3_ST_SW_CERT_STATUS_A;
|
|
|
|
else
|
|
|
|
s->state=SSL3_ST_SW_KEY_EXCH_A;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
skip = 1;
|
|
|
|
s->state=SSL3_ST_SW_KEY_EXCH_A;
|
|
|
|
}
|
|
|
|
#else
|
2005-04-26 16:02:40 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
skip=1;
|
2009-12-08 11:38:18 +00:00
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
s->state=SSL3_ST_SW_KEY_EXCH_A;
|
2009-12-08 11:38:18 +00:00
|
|
|
#endif
|
2005-04-26 16:02:40 +00:00
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SW_KEY_EXCH_A:
|
|
|
|
case SSL3_ST_SW_KEY_EXCH_B:
|
2007-02-17 06:45:38 +00:00
|
|
|
alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
|
2005-04-26 16:02:40 +00:00
|
|
|
|
|
|
|
/* clear this, it may get reset by
|
|
|
|
* send_server_key_exchange */
|
|
|
|
if ((s->options & SSL_OP_EPHEMERAL_RSA)
|
|
|
|
#ifndef OPENSSL_NO_KRB5
|
2007-02-17 06:45:38 +00:00
|
|
|
&& !(alg_k & SSL_kKRB5)
|
2005-04-26 16:02:40 +00:00
|
|
|
#endif /* OPENSSL_NO_KRB5 */
|
|
|
|
)
|
|
|
|
/* option SSL_OP_EPHEMERAL_RSA sends temporary RSA key
|
|
|
|
* even when forbidden by protocol specs
|
|
|
|
* (handshake may fail as clients are not required to
|
|
|
|
* be able to handle this) */
|
|
|
|
s->s3->tmp.use_rsa_tmp=1;
|
|
|
|
else
|
|
|
|
s->s3->tmp.use_rsa_tmp=0;
|
|
|
|
|
2006-06-14 17:40:31 +00:00
|
|
|
/* only send if a DH key exchange or
|
2005-04-26 16:02:40 +00:00
|
|
|
* RSA but we have a sign only certificate */
|
|
|
|
if (s->s3->tmp.use_rsa_tmp
|
2009-05-31 17:11:24 +00:00
|
|
|
/* PSK: send ServerKeyExchange if PSK identity
|
|
|
|
* hint if provided */
|
|
|
|
#ifndef OPENSSL_NO_PSK
|
|
|
|
|| ((alg_k & SSL_kPSK) && s->ctx->psk_identity_hint)
|
|
|
|
#endif
|
2007-02-17 06:45:38 +00:00
|
|
|
|| (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
|
2009-05-31 17:11:24 +00:00
|
|
|
|| (alg_k & SSL_kEECDH)
|
2007-02-17 06:45:38 +00:00
|
|
|
|| ((alg_k & SSL_kRSA)
|
2005-04-26 16:02:40 +00:00
|
|
|
&& (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL
|
|
|
|
|| (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)
|
|
|
|
&& EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)
|
|
|
|
)
|
|
|
|
)
|
|
|
|
)
|
|
|
|
)
|
|
|
|
{
|
2009-05-15 22:58:13 +00:00
|
|
|
dtls1_start_timer(s);
|
2013-03-11 15:34:28 +00:00
|
|
|
ret=ssl3_send_server_key_exchange(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
if (ret <= 0) goto end;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
skip=1;
|
|
|
|
|
|
|
|
s->state=SSL3_ST_SW_CERT_REQ_A;
|
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SW_CERT_REQ_A:
|
|
|
|
case SSL3_ST_SW_CERT_REQ_B:
|
|
|
|
if (/* don't request cert unless asked for it: */
|
|
|
|
!(s->verify_mode & SSL_VERIFY_PEER) ||
|
|
|
|
/* if SSL_VERIFY_CLIENT_ONCE is set,
|
|
|
|
* don't request cert during re-negotiation: */
|
|
|
|
((s->session->peer != NULL) &&
|
|
|
|
(s->verify_mode & SSL_VERIFY_CLIENT_ONCE)) ||
|
|
|
|
/* never request cert in anonymous ciphersuites
|
|
|
|
* (see section "Certificate request" in SSL 3 drafts
|
|
|
|
* and in RFC 2246): */
|
2007-02-17 06:45:38 +00:00
|
|
|
((s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
|
2005-04-26 16:02:40 +00:00
|
|
|
/* ... except when the application insists on verification
|
|
|
|
* (against the specs, but s3_clnt.c accepts this for SSL 3) */
|
|
|
|
!(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) ||
|
2007-02-17 06:45:38 +00:00
|
|
|
/* never request cert in Kerberos ciphersuites */
|
2009-05-31 17:11:24 +00:00
|
|
|
(s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)
|
|
|
|
/* With normal PSK Certificates and
|
|
|
|
* Certificate Requests are omitted */
|
|
|
|
|| (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
|
2005-04-26 16:02:40 +00:00
|
|
|
{
|
|
|
|
/* no cert request */
|
|
|
|
skip=1;
|
|
|
|
s->s3->tmp.cert_request=0;
|
|
|
|
s->state=SSL3_ST_SW_SRVR_DONE_A;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
|
|
|
|
{
|
|
|
|
s->d1->next_state = SSL3_ST_SW_SRVR_DONE_A;
|
|
|
|
s->state = DTLS1_SCTP_ST_SW_WRITE_SOCK;
|
|
|
|
}
|
|
|
|
#endif
|
2005-04-26 16:02:40 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
s->s3->tmp.cert_request=1;
|
2009-05-15 22:58:13 +00:00
|
|
|
dtls1_start_timer(s);
|
2013-03-11 15:34:28 +00:00
|
|
|
ret=ssl3_send_certificate_request(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
if (ret <= 0) goto end;
|
|
|
|
#ifndef NETSCAPE_HANG_BUG
|
|
|
|
s->state=SSL3_ST_SW_SRVR_DONE_A;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
|
|
|
|
{
|
|
|
|
s->d1->next_state = SSL3_ST_SW_SRVR_DONE_A;
|
|
|
|
s->state = DTLS1_SCTP_ST_SW_WRITE_SOCK;
|
|
|
|
}
|
|
|
|
#endif
|
2005-04-26 16:02:40 +00:00
|
|
|
#else
|
|
|
|
s->state=SSL3_ST_SW_FLUSH;
|
|
|
|
s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
|
|
|
|
{
|
|
|
|
s->d1->next_state = s->s3->tmp.next_state;
|
|
|
|
s->s3->tmp.next_state=DTLS1_SCTP_ST_SW_WRITE_SOCK;
|
|
|
|
}
|
|
|
|
#endif
|
2005-04-26 16:02:40 +00:00
|
|
|
#endif
|
|
|
|
s->init_num=0;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SW_SRVR_DONE_A:
|
|
|
|
case SSL3_ST_SW_SRVR_DONE_B:
|
2009-05-15 22:58:13 +00:00
|
|
|
dtls1_start_timer(s);
|
2013-03-11 15:34:28 +00:00
|
|
|
ret=ssl3_send_server_done(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
if (ret <= 0) goto end;
|
|
|
|
s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
|
|
|
|
s->state=SSL3_ST_SW_FLUSH;
|
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
2010-02-01 12:44:11 +00:00
|
|
|
case SSL3_ST_SW_FLUSH:
|
2010-01-26 19:46:30 +00:00
|
|
|
s->rwstate=SSL_WRITING;
|
|
|
|
if (BIO_flush(s->wbio) <= 0)
|
2005-04-26 16:02:40 +00:00
|
|
|
{
|
2011-12-25 14:45:40 +00:00
|
|
|
/* If the write error was fatal, stop trying */
|
|
|
|
if (!BIO_should_retry(s->wbio))
|
|
|
|
{
|
|
|
|
s->rwstate=SSL_NOTHING;
|
|
|
|
s->state=s->s3->tmp.next_state;
|
|
|
|
}
|
|
|
|
|
2010-01-26 19:46:30 +00:00
|
|
|
ret= -1;
|
|
|
|
goto end;
|
2005-04-26 16:02:40 +00:00
|
|
|
}
|
2010-01-26 19:46:30 +00:00
|
|
|
s->rwstate=SSL_NOTHING;
|
2005-04-26 16:02:40 +00:00
|
|
|
s->state=s->s3->tmp.next_state;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SR_CERT_A:
|
|
|
|
case SSL3_ST_SR_CERT_B:
|
|
|
|
/* Check for second client hello (MS SGC) */
|
|
|
|
ret = ssl3_check_client_hello(s);
|
|
|
|
if (ret <= 0)
|
|
|
|
goto end;
|
|
|
|
if (ret == 2)
|
2012-03-06 13:24:16 +00:00
|
|
|
{
|
|
|
|
dtls1_stop_timer(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
s->state = SSL3_ST_SR_CLNT_HELLO_C;
|
2012-03-06 13:24:16 +00:00
|
|
|
}
|
2005-04-26 16:02:40 +00:00
|
|
|
else {
|
2014-07-15 17:21:59 +00:00
|
|
|
if (s->s3->tmp.cert_request)
|
|
|
|
{
|
|
|
|
ret=ssl3_get_client_certificate(s);
|
|
|
|
if (ret <= 0) goto end;
|
|
|
|
}
|
2005-04-26 16:02:40 +00:00
|
|
|
s->init_num=0;
|
|
|
|
s->state=SSL3_ST_SR_KEY_EXCH_A;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SR_KEY_EXCH_A:
|
|
|
|
case SSL3_ST_SR_KEY_EXCH_B:
|
|
|
|
ret=ssl3_get_client_key_exchange(s);
|
|
|
|
if (ret <= 0) goto end;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
/* Add new shared key for SCTP-Auth,
|
|
|
|
* will be ignored if no SCTP used.
|
|
|
|
*/
|
|
|
|
snprintf((char *) labelbuffer, sizeof(DTLS1_SCTP_AUTH_LABEL),
|
|
|
|
DTLS1_SCTP_AUTH_LABEL);
|
|
|
|
|
|
|
|
SSL_export_keying_material(s, sctpauthkey,
|
|
|
|
sizeof(sctpauthkey), labelbuffer,
|
|
|
|
sizeof(labelbuffer), NULL, 0, 0);
|
|
|
|
|
|
|
|
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY,
|
|
|
|
sizeof(sctpauthkey), sctpauthkey);
|
|
|
|
#endif
|
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
s->state=SSL3_ST_SR_CERT_VRFY_A;
|
|
|
|
s->init_num=0;
|
|
|
|
|
2009-05-31 17:11:24 +00:00
|
|
|
if (ret == 2)
|
|
|
|
{
|
|
|
|
/* For the ECDH ciphersuites when
|
|
|
|
* the client sends its ECDH pub key in
|
|
|
|
* a certificate, the CertificateVerify
|
|
|
|
* message is not sent.
|
|
|
|
*/
|
|
|
|
s->state=SSL3_ST_SR_FINISHED_A;
|
|
|
|
s->init_num = 0;
|
|
|
|
}
|
2013-03-27 15:50:42 +00:00
|
|
|
else if (SSL_USE_SIGALGS(s))
|
|
|
|
{
|
|
|
|
s->state=SSL3_ST_SR_CERT_VRFY_A;
|
|
|
|
s->init_num=0;
|
|
|
|
if (!s->session->peer)
|
|
|
|
break;
|
|
|
|
/* For sigalgs freeze the handshake buffer
|
|
|
|
* at this point and digest cached records.
|
|
|
|
*/
|
|
|
|
if (!s->s3->handshake_buffer)
|
|
|
|
{
|
2013-04-09 14:57:39 +00:00
|
|
|
SSLerr(SSL_F_DTLS1_ACCEPT,ERR_R_INTERNAL_ERROR);
|
2013-03-27 15:50:42 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
s->s3->flags |= TLS1_FLAGS_KEEP_HANDSHAKE;
|
|
|
|
if (!ssl3_digest_cached_records(s))
|
|
|
|
return -1;
|
|
|
|
}
|
2009-05-31 17:11:24 +00:00
|
|
|
else
|
|
|
|
{
|
|
|
|
s->state=SSL3_ST_SR_CERT_VRFY_A;
|
|
|
|
s->init_num=0;
|
2005-04-26 16:02:40 +00:00
|
|
|
|
2009-05-31 17:11:24 +00:00
|
|
|
/* We need to get hashes here so if there is
|
|
|
|
* a client cert, it can be verified */
|
|
|
|
s->method->ssl3_enc->cert_verify_mac(s,
|
|
|
|
NID_md5,
|
|
|
|
&(s->s3->tmp.cert_verify_md[0]));
|
|
|
|
s->method->ssl3_enc->cert_verify_mac(s,
|
|
|
|
NID_sha1,
|
|
|
|
&(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]));
|
|
|
|
}
|
2005-04-26 16:02:40 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SR_CERT_VRFY_A:
|
|
|
|
case SSL3_ST_SR_CERT_VRFY_B:
|
2014-11-19 16:01:36 +00:00
|
|
|
/*
|
|
|
|
* This *should* be the first time we enable CCS, but be
|
|
|
|
* extra careful about surrounding code changes. We need
|
|
|
|
* to set this here because we don't know if we're
|
|
|
|
* expecting a CertificateVerify or not.
|
|
|
|
*/
|
|
|
|
if (!s->s3->change_cipher_spec)
|
|
|
|
s->d1->change_cipher_spec_ok = 1;
|
2005-04-26 16:02:40 +00:00
|
|
|
/* we should decide if we expected this one */
|
|
|
|
ret=ssl3_get_cert_verify(s);
|
|
|
|
if (ret <= 0) goto end;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
|
|
|
|
state == SSL_ST_RENEGOTIATE)
|
|
|
|
s->state=DTLS1_SCTP_ST_SR_READ_SOCK;
|
|
|
|
else
|
|
|
|
#endif
|
|
|
|
s->state=SSL3_ST_SR_FINISHED_A;
|
2005-04-26 16:02:40 +00:00
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SR_FINISHED_A:
|
|
|
|
case SSL3_ST_SR_FINISHED_B:
|
2014-11-19 16:01:36 +00:00
|
|
|
/*
|
|
|
|
* Enable CCS for resumed handshakes.
|
|
|
|
* In a full handshake, we end up here through
|
|
|
|
* SSL3_ST_SR_CERT_VRFY_B, so change_cipher_spec_ok was
|
|
|
|
* already set. Receiving a CCS clears the flag, so make
|
|
|
|
* sure not to re-enable it to ban duplicates.
|
|
|
|
* s->s3->change_cipher_spec is set when a CCS is
|
|
|
|
* processed in d1_pkt.c, and remains set until
|
|
|
|
* the client's Finished message is read.
|
|
|
|
*/
|
|
|
|
if (!s->s3->change_cipher_spec)
|
|
|
|
s->d1->change_cipher_spec_ok = 1;
|
2005-04-26 16:02:40 +00:00
|
|
|
ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A,
|
|
|
|
SSL3_ST_SR_FINISHED_B);
|
|
|
|
if (ret <= 0) goto end;
|
2009-05-15 22:58:13 +00:00
|
|
|
dtls1_stop_timer(s);
|
2005-04-26 16:02:40 +00:00
|
|
|
if (s->hit)
|
|
|
|
s->state=SSL_ST_OK;
|
2009-12-08 11:38:18 +00:00
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
|
|
else if (s->tlsext_ticket_expected)
|
|
|
|
s->state=SSL3_ST_SW_SESSION_TICKET_A;
|
|
|
|
#endif
|
2005-04-26 16:02:40 +00:00
|
|
|
else
|
|
|
|
s->state=SSL3_ST_SW_CHANGE_A;
|
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
2009-12-08 11:38:18 +00:00
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
|
|
case SSL3_ST_SW_SESSION_TICKET_A:
|
|
|
|
case SSL3_ST_SW_SESSION_TICKET_B:
|
2013-03-11 15:34:28 +00:00
|
|
|
ret=ssl3_send_newsession_ticket(s);
|
2009-12-08 11:38:18 +00:00
|
|
|
if (ret <= 0) goto end;
|
|
|
|
s->state=SSL3_ST_SW_CHANGE_A;
|
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SW_CERT_STATUS_A:
|
|
|
|
case SSL3_ST_SW_CERT_STATUS_B:
|
|
|
|
ret=ssl3_send_cert_status(s);
|
|
|
|
if (ret <= 0) goto end;
|
|
|
|
s->state=SSL3_ST_SW_KEY_EXCH_A;
|
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
case SSL3_ST_SW_CHANGE_A:
|
|
|
|
case SSL3_ST_SW_CHANGE_B:
|
|
|
|
|
|
|
|
s->session->cipher=s->s3->tmp.new_cipher;
|
|
|
|
if (!s->method->ssl3_enc->setup_key_block(s))
|
|
|
|
{ ret= -1; goto end; }
|
|
|
|
|
|
|
|
ret=dtls1_send_change_cipher_spec(s,
|
|
|
|
SSL3_ST_SW_CHANGE_A,SSL3_ST_SW_CHANGE_B);
|
|
|
|
|
|
|
|
if (ret <= 0) goto end;
|
2011-12-25 14:45:40 +00:00
|
|
|
|
|
|
|
#ifndef OPENSSL_NO_SCTP
|
2012-05-09 17:28:41 +00:00
|
|
|
if (!s->hit)
|
|
|
|
{
|
|
|
|
/* Change to new shared key of SCTP-Auth,
|
|
|
|
* will be ignored if no SCTP used.
|
|
|
|
*/
|
|
|
|
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY, 0, NULL);
|
|
|
|
}
|
2011-12-25 14:45:40 +00:00
|
|
|
#endif
|
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
s->state=SSL3_ST_SW_FINISHED_A;
|
|
|
|
s->init_num=0;
|
|
|
|
|
|
|
|
if (!s->method->ssl3_enc->change_cipher_state(s,
|
|
|
|
SSL3_CHANGE_CIPHER_SERVER_WRITE))
|
|
|
|
{
|
|
|
|
ret= -1;
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
|
|
|
dtls1_reset_seq_numbers(s, SSL3_CC_WRITE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL3_ST_SW_FINISHED_A:
|
|
|
|
case SSL3_ST_SW_FINISHED_B:
|
2013-03-11 15:34:28 +00:00
|
|
|
ret=ssl3_send_finished(s,
|
2005-04-26 16:02:40 +00:00
|
|
|
SSL3_ST_SW_FINISHED_A,SSL3_ST_SW_FINISHED_B,
|
|
|
|
s->method->ssl3_enc->server_finished_label,
|
|
|
|
s->method->ssl3_enc->server_finished_label_len);
|
|
|
|
if (ret <= 0) goto end;
|
|
|
|
s->state=SSL3_ST_SW_FLUSH;
|
|
|
|
if (s->hit)
|
2012-05-09 17:28:41 +00:00
|
|
|
{
|
2005-04-26 16:02:40 +00:00
|
|
|
s->s3->tmp.next_state=SSL3_ST_SR_FINISHED_A;
|
2012-05-09 17:28:41 +00:00
|
|
|
|
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
/* Change to new shared key of SCTP-Auth,
|
|
|
|
* will be ignored if no SCTP used.
|
|
|
|
*/
|
|
|
|
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY, 0, NULL);
|
|
|
|
#endif
|
|
|
|
}
|
2005-04-26 16:02:40 +00:00
|
|
|
else
|
2011-12-25 14:45:40 +00:00
|
|
|
{
|
2005-04-26 16:02:40 +00:00
|
|
|
s->s3->tmp.next_state=SSL_ST_OK;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
|
|
|
|
{
|
|
|
|
s->d1->next_state = s->s3->tmp.next_state;
|
|
|
|
s->s3->tmp.next_state=DTLS1_SCTP_ST_SW_WRITE_SOCK;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
2005-04-26 16:02:40 +00:00
|
|
|
s->init_num=0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSL_ST_OK:
|
|
|
|
/* clean a few things up */
|
|
|
|
ssl3_cleanup_key_block(s);
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
BUF_MEM_free(s->init_buf);
|
|
|
|
s->init_buf=NULL;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* remove buffering on output */
|
|
|
|
ssl_free_wbio_buffer(s);
|
|
|
|
|
|
|
|
s->init_num=0;
|
|
|
|
|
2010-08-27 12:10:12 +00:00
|
|
|
if (s->renegotiate == 2) /* skipped if we just sent a HelloRequest */
|
2005-04-26 16:02:40 +00:00
|
|
|
{
|
2010-08-27 12:10:12 +00:00
|
|
|
s->renegotiate=0;
|
2005-04-26 16:02:40 +00:00
|
|
|
s->new_session=0;
|
|
|
|
|
|
|
|
ssl_update_cache(s,SSL_SESS_CACHE_SERVER);
|
|
|
|
|
|
|
|
s->ctx->stats.sess_accept_good++;
|
|
|
|
/* s->server=1; */
|
|
|
|
s->handshake_func=dtls1_accept;
|
|
|
|
|
|
|
|
if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = 1;
|
|
|
|
|
|
|
|
/* done handshaking, next message is client hello */
|
|
|
|
s->d1->handshake_read_seq = 0;
|
|
|
|
/* next message is server hello */
|
|
|
|
s->d1->handshake_write_seq = 0;
|
2009-04-14 14:22:26 +00:00
|
|
|
s->d1->next_handshake_write_seq = 0;
|
2005-04-26 16:02:40 +00:00
|
|
|
goto end;
|
|
|
|
/* break; */
|
|
|
|
|
|
|
|
default:
|
2005-04-26 18:08:00 +00:00
|
|
|
SSLerr(SSL_F_DTLS1_ACCEPT,SSL_R_UNKNOWN_STATE);
|
2005-04-26 16:02:40 +00:00
|
|
|
ret= -1;
|
|
|
|
goto end;
|
|
|
|
/* break; */
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!s->s3->tmp.reuse_message && !skip)
|
|
|
|
{
|
|
|
|
if (s->debug)
|
|
|
|
{
|
|
|
|
if ((ret=BIO_flush(s->wbio)) <= 0)
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if ((cb != NULL) && (s->state != state))
|
|
|
|
{
|
|
|
|
new_state=s->state;
|
|
|
|
s->state=state;
|
|
|
|
cb(s,SSL_CB_ACCEPT_LOOP,1);
|
|
|
|
s->state=new_state;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
skip=0;
|
|
|
|
}
|
|
|
|
end:
|
|
|
|
/* BIO_flush(s->wbio); */
|
|
|
|
|
|
|
|
s->in_handshake--;
|
2011-12-25 14:45:40 +00:00
|
|
|
#ifndef OPENSSL_NO_SCTP
|
|
|
|
/* Notify SCTP BIO socket to leave handshake
|
|
|
|
* mode and prevent stream identifier other
|
|
|
|
* than 0. Will be ignored if no SCTP is used.
|
|
|
|
*/
|
|
|
|
BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE, s->in_handshake, NULL);
|
|
|
|
#endif
|
|
|
|
|
2005-04-26 16:02:40 +00:00
|
|
|
if (cb != NULL)
|
|
|
|
cb(s,SSL_CB_ACCEPT_EXIT,ret);
|
|
|
|
return(ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
int dtls1_send_hello_verify_request(SSL *s)
|
|
|
|
{
|
|
|
|
unsigned int msg_len;
|
|
|
|
unsigned char *msg, *buf, *p;
|
|
|
|
|
|
|
|
if (s->state == DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A)
|
|
|
|
{
|
|
|
|
buf = (unsigned char *)s->init_buf->data;
|
|
|
|
|
|
|
|
msg = p = &(buf[DTLS1_HM_HEADER_LENGTH]);
|
2013-04-06 14:50:12 +00:00
|
|
|
/* Always use DTLS 1.0 version: see RFC 6347 */
|
|
|
|
*(p++) = DTLS1_VERSION >> 8;
|
|
|
|
*(p++) = DTLS1_VERSION & 0xFF;
|
2005-04-26 16:02:40 +00:00
|
|
|
|
2009-09-04 17:42:06 +00:00
|
|
|
if (s->ctx->app_gen_cookie_cb == NULL ||
|
|
|
|
s->ctx->app_gen_cookie_cb(s, s->d1->cookie,
|
|
|
|
&(s->d1->cookie_len)) == 0)
|
2007-09-30 18:53:54 +00:00
|
|
|
{
|
|
|
|
SSLerr(SSL_F_DTLS1_SEND_HELLO_VERIFY_REQUEST,ERR_R_INTERNAL_ERROR);
|
|
|
|
return 0;
|
|
|
|
}
|
2005-04-26 16:02:40 +00:00
|
|
|
|
2007-10-09 19:31:18 +00:00
|
|
|
*(p++) = (unsigned char) s->d1->cookie_len;
|
2005-04-26 16:02:40 +00:00
|
|
|
memcpy(p, s->d1->cookie, s->d1->cookie_len);
|
|
|
|
p += s->d1->cookie_len;
|
|
|
|
msg_len = p - msg;
|
|
|
|
|
|
|
|
dtls1_set_message_header(s, buf,
|
|
|
|
DTLS1_MT_HELLO_VERIFY_REQUEST, msg_len, 0, msg_len);
|
|
|
|
|
|
|
|
s->state=DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B;
|
|
|
|
/* number of bytes to write */
|
|
|
|
s->init_num=p-buf;
|
|
|
|
s->init_off=0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B */
|
|
|
|
return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
|
|
|
|
}
|