ref: fe06f8e571554997c7ca58820c7fbd4a42de3ff7
dir: /sys/src/ape/lib/openssl/ssl/d1_lib.c/
/* ssl/d1_lib.c */
/*
* DTLS implementation written by Nagendra Modadugu
* ([email protected]) for the OpenSSL project 2005.
*/
/* ====================================================================
* Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
*
* 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
* [email protected].
*
* 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
* ([email protected]). This product includes software written by Tim
* Hudson ([email protected]).
*
*/
#include <stdio.h>
#include <openssl/objects.h>
#include "ssl_locl.h"
const char dtls1_version_str[]="DTLSv1" OPENSSL_VERSION_PTEXT;
SSL3_ENC_METHOD DTLSv1_enc_data={
dtls1_enc,
tls1_mac,
tls1_setup_key_block,
tls1_generate_master_secret,
tls1_change_cipher_state,
tls1_final_finish_mac,
TLS1_FINISH_MAC_LENGTH,
tls1_cert_verify_mac,
TLS_MD_CLIENT_FINISH_CONST,TLS_MD_CLIENT_FINISH_CONST_SIZE,
TLS_MD_SERVER_FINISH_CONST,TLS_MD_SERVER_FINISH_CONST_SIZE,
tls1_alert_code,
};
long dtls1_default_timeout(void)
{
/* 2 hours, the 24 hours mentioned in the DTLSv1 spec
* is way too long for http, the cache would over fill */
return(60*60*2);
}
IMPLEMENT_dtls1_meth_func(dtlsv1_base_method,
ssl_undefined_function,
ssl_undefined_function,
ssl_bad_method)
int dtls1_new(SSL *s)
{
DTLS1_STATE *d1;
if (!ssl3_new(s)) return(0);
if ((d1=OPENSSL_malloc(sizeof *d1)) == NULL) return (0);
memset(d1,0, sizeof *d1);
/* d1->handshake_epoch=0; */
#if defined(OPENSSL_SYS_VMS) || defined(VMS_TEST)
d1->bitmap.length=64;
#else
d1->bitmap.length=sizeof(d1->bitmap.map) * 8;
#endif
pq_64bit_init(&(d1->bitmap.map));
pq_64bit_init(&(d1->bitmap.max_seq_num));
pq_64bit_init(&(d1->next_bitmap.map));
pq_64bit_init(&(d1->next_bitmap.max_seq_num));
d1->unprocessed_rcds.q=pqueue_new();
d1->processed_rcds.q=pqueue_new();
d1->buffered_messages = pqueue_new();
d1->sent_messages=pqueue_new();
if ( s->server)
{
d1->cookie_len = sizeof(s->d1->cookie);
}
if( ! d1->unprocessed_rcds.q || ! d1->processed_rcds.q
|| ! d1->buffered_messages || ! d1->sent_messages)
{
if ( d1->unprocessed_rcds.q) pqueue_free(d1->unprocessed_rcds.q);
if ( d1->processed_rcds.q) pqueue_free(d1->processed_rcds.q);
if ( d1->buffered_messages) pqueue_free(d1->buffered_messages);
if ( d1->sent_messages) pqueue_free(d1->sent_messages);
OPENSSL_free(d1);
return (0);
}
s->d1=d1;
s->method->ssl_clear(s);
return(1);
}
void dtls1_free(SSL *s)
{
pitem *item = NULL;
hm_fragment *frag = NULL;
ssl3_free(s);
while( (item = pqueue_pop(s->d1->unprocessed_rcds.q)) != NULL)
{
OPENSSL_free(item->data);
pitem_free(item);
}
pqueue_free(s->d1->unprocessed_rcds.q);
while( (item = pqueue_pop(s->d1->processed_rcds.q)) != NULL)
{
OPENSSL_free(item->data);
pitem_free(item);
}
pqueue_free(s->d1->processed_rcds.q);
while( (item = pqueue_pop(s->d1->buffered_messages)) != NULL)
{
frag = (hm_fragment *)item->data;
OPENSSL_free(frag->fragment);
OPENSSL_free(frag);
pitem_free(item);
}
pqueue_free(s->d1->buffered_messages);
while ( (item = pqueue_pop(s->d1->sent_messages)) != NULL)
{
frag = (hm_fragment *)item->data;
OPENSSL_free(frag->fragment);
OPENSSL_free(frag);
pitem_free(item);
}
pqueue_free(s->d1->sent_messages);
pq_64bit_free(&(s->d1->bitmap.map));
pq_64bit_free(&(s->d1->bitmap.max_seq_num));
pq_64bit_free(&(s->d1->next_bitmap.map));
pq_64bit_free(&(s->d1->next_bitmap.max_seq_num));
OPENSSL_free(s->d1);
}
void dtls1_clear(SSL *s)
{
ssl3_clear(s);
s->version=DTLS1_VERSION;
}
/*
* As it's impossible to use stream ciphers in "datagram" mode, this
* simple filter is designed to disengage them in DTLS. Unfortunately
* there is no universal way to identify stream SSL_CIPHER, so we have
* to explicitly list their SSL_* codes. Currently RC4 is the only one
* available, but if new ones emerge, they will have to be added...
*/
SSL_CIPHER *dtls1_get_cipher(unsigned int u)
{
SSL_CIPHER *ciph = ssl3_get_cipher(u);
if (ciph != NULL)
{
if ((ciph->algorithms&SSL_ENC_MASK) == SSL_RC4)
return NULL;
}
return ciph;
}