90 lines
1.9 KiB
C++
90 lines
1.9 KiB
C++
/* -*- C++ -*- */
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/*
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* Copyright 2008 Steve Glass
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*
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* This file is part of OP25.
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*
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* OP25 is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* OP25 is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OP25; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Boston, MA
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* 02110-1301, USA.
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*/
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#include "ldu2.h"
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#include <itpp/base/vec.h>
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#include <itpp/base/converters.h>
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#include <boost/format.hpp>
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#include "pickle.h"
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#include "value_string.h"
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using std::string;
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ldu2::ldu2(const_bit_queue& frame_body) :
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ldu(frame_body)
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{
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}
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ldu2::~ldu2()
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{
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}
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string
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ldu2::duid_str() const
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{
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return string("LDU2");
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}
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std::string
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ldu2::snapshot() const
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{
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pickle p;
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p.add("duid", duid_str());
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std::stringstream ss;
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ss << "0x";
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for (size_t n = 0; n < m_crypto_state.mi.size(); ++n)
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ss << (boost::format("%02x") % (int)m_crypto_state.mi[n]);
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p.add("mi", ss.str());
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p.add("algid", lookup(m_crypto_state.algid, ALGIDS, ALGIDS_SZ));
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p.add("kid", (boost::format("0x%04x") % m_crypto_state.kid).str());
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return p.to_string();
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}
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void
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ldu2::do_correct_errors(bit_vector& frame_body)
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{
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ldu::do_correct_errors(frame_body);
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if (!process_meta_data(frame_body))
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return;
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const itpp::bvec& data = raw_meta_data();
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for (int i = 0; i < 72; i += 8)
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{
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m_crypto_state.mi[i/8] = bin2dec(data.mid(i, 8));
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}
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m_crypto_state.algid = bin2dec(data.mid(72, 8));
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m_crypto_state.kid = bin2dec(data.mid(80, 16));
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}
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struct CryptoState
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ldu2::crypto_state() const
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{
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return m_crypto_state;
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}
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