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/*
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* Copyright (C) 2000-2012 Free Software Foundation, Inc.
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*
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* Author: Nikos Mavrogiannopoulos
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*
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* This file is part of GnuTLS.
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*
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* The GnuTLS is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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#ifndef GNUTLS_RECORD_H
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#define GNUTLS_RECORD_H
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#include <gnutls/gnutls.h>
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#include <buffers.h>
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#include <constate.h>
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ssize_t _gnutls_send_tlen_int(gnutls_session_t session,
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content_type_t type,
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gnutls_handshake_description_t htype,
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unsigned int epoch_rel, const void *data,
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size_t sizeofdata, size_t min_pad,
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unsigned int mflags);
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inline static ssize_t
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_gnutls_send_int(gnutls_session_t session, content_type_t type,
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gnutls_handshake_description_t htype,
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unsigned int epoch_rel, const void *_data,
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size_t data_size, unsigned int mflags)
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{
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return _gnutls_send_tlen_int(session, type, htype, epoch_rel,
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_data, data_size, 0, mflags);
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}
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ssize_t _gnutls_recv_int(gnutls_session_t session, content_type_t type,
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uint8_t * data,
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size_t sizeofdata, void *seq, unsigned int ms);
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inline static unsigned max_record_recv_size(gnutls_session_t session)
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{
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unsigned size;
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if (session->internals.max_recv_size == 0) {
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size = session->security_parameters.max_record_recv_size + RECORD_HEADER_SIZE(session);
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if (session->internals.allow_large_records != 0)
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size += EXTRA_COMP_SIZE;
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} else {
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size = session->internals.max_recv_size;
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}
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return size;
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}
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inline static unsigned max_decrypted_size(gnutls_session_t session)
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{
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unsigned size = 0;
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if (session->internals.allow_large_records != 0)
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size += EXTRA_COMP_SIZE;
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size += session->security_parameters.max_record_recv_size;
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return size;
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}
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/* Returns the headers + any IV that the ciphersuite
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* requires */
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inline static
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unsigned int get_total_headers(gnutls_session_t session)
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{
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int ret;
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record_parameters_st *params;
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unsigned total = RECORD_HEADER_SIZE(session);
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ret = _gnutls_epoch_get(session, EPOCH_WRITE_CURRENT, ¶ms);
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if (ret < 0) {
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return total;
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}
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return total + _gnutls_cipher_get_explicit_iv_size(params->cipher);
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}
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inline static
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unsigned int get_total_headers2(gnutls_session_t session, record_parameters_st *params)
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{
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unsigned total = RECORD_HEADER_SIZE(session);
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return total + _gnutls_cipher_get_explicit_iv_size(params->cipher);
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}
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inline static void session_invalidate(gnutls_session_t session)
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{
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session->internals.invalid_connection = 1;
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}
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#endif
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