a41280d8cb
This uses ssl3_read_bytes for now. We still need to dismantle that function and then invert the handshake state machine, but this gets things closer to the right shape as an intermediate step and is a large chunk in itself. It simplifies a lot of the CCS/handshake synchronization as a lot of the invariants much more clearly follow from the handshake itself. Tests need to be adjusted since this changes some error codes. Now all the CCS/Handshake checks fall through to the usual SSL_R_UNEXPECTED_RECORD codepath. Most of what used to be a special-case falls out naturally. (If half of Finished was in the same record as the pre-CCS message, that part of the handshake record would have been left unconsumed, so read_change_cipher_spec would have noticed, just like read_app_data would have noticed.) Change-Id: I15c7501afe523d5062f0e24a3b65f053008d87be Reviewed-on: https://boringssl-review.googlesource.com/6642 Reviewed-by: Adam Langley <agl@google.com>
131 lines
4.1 KiB
C
131 lines
4.1 KiB
C
/*
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* DTLS implementation written by Nagendra Modadugu
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* (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
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*/
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/* ====================================================================
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* Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com). */
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#include <openssl/ssl.h>
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#include "internal.h"
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static const SSL_PROTOCOL_METHOD DTLS_protocol_method = {
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1 /* is_dtls */,
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dtls1_new,
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dtls1_free,
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dtls1_accept,
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dtls1_connect,
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dtls1_get_message,
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dtls1_read_app_data,
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dtls1_read_change_cipher_spec,
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dtls1_read_close_notify,
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dtls1_write_app_data,
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dtls1_dispatch_alert,
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dtls1_supports_cipher,
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DTLS1_HM_HEADER_LENGTH,
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dtls1_set_handshake_header,
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dtls1_handshake_write,
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};
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const SSL_METHOD *DTLS_method(void) {
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static const SSL_METHOD method = {
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0,
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&DTLS_protocol_method,
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};
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return &method;
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}
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/* Legacy version-locked methods. */
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const SSL_METHOD *DTLSv1_2_method(void) {
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static const SSL_METHOD method = {
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DTLS1_2_VERSION,
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&DTLS_protocol_method,
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};
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return &method;
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}
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const SSL_METHOD *DTLSv1_method(void) {
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static const SSL_METHOD method = {
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DTLS1_VERSION,
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&DTLS_protocol_method,
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};
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return &method;
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}
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/* Legacy side-specific methods. */
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const SSL_METHOD *DTLSv1_2_server_method(void) {
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return DTLSv1_2_method();
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}
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const SSL_METHOD *DTLSv1_server_method(void) {
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return DTLSv1_method();
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}
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const SSL_METHOD *DTLSv1_2_client_method(void) {
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return DTLSv1_2_method();
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}
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const SSL_METHOD *DTLSv1_client_method(void) {
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return DTLSv1_method();
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}
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const SSL_METHOD *DTLS_server_method(void) {
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return DTLS_method();
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}
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const SSL_METHOD *DTLS_client_method(void) {
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return DTLS_method();
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}
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