44d3eed2bb
The only case where renego is supported is if we are a client and the server sends a HelloRequest. That is still needed to support the renego + client auth hack in Chrome. Beyond that, no other forms of renego will work. The messy logic where the handshake loop is repurposed to send HelloRequest and the extremely confusing tri-state s->renegotiate (which makes SSL_renegotiate_pending a lie during the initial handshake as a server) are now gone. The next change will further simplify things by removing ssl->s3->renegotiate and the renego deferral logic. There's also some server-only renegotiation checks that can go now. Also clean up ssl3_read_bytes' HelloRequest handling. The old logic relied on the handshake state machine to reject bad HelloRequests which... actually that code probably lets you initiate renego by sending the first four bytes of a ServerHello and expecting the peer to read it later. BUG=429450 Change-Id: Ie0f87d0c2b94e13811fe8e22e810ab2ffc8efa6c Reviewed-on: https://boringssl-review.googlesource.com/4824 Reviewed-by: Adam Langley <agl@google.com>
136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
/* ssl/d1_meth.h */
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/*
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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 "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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ssl3_read,
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ssl3_peek,
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ssl3_write,
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dtls1_shutdown,
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dtls1_get_message,
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dtls1_read_bytes,
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dtls1_write_app_data_bytes,
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dtls1_dispatch_alert,
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ssl3_ctrl,
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ssl3_ctx_ctrl,
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ssl3_pending,
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ssl3_num_ciphers,
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dtls1_get_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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