125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
//-----------------------------------------------------------------------------
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//
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// Security.h
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//
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// Implementation of the Z-Wave COMMAND_CLASS_Security
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//
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// Copyright (c) 2010 Mal Lansell <openzwave@lansell.org>
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//
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// SOFTWARE NOTICE AND LICENSE
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//
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// This file is part of OpenZWave.
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//
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// OpenZWave is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation, either version 3 of the License,
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// or (at your option) any later version.
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//
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// OpenZWave is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU 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 OpenZWave. If not, see <http://www.gnu.org/licenses/>.
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//
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//-----------------------------------------------------------------------------
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#ifndef _Security_H
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#define _Security_H
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#include <ctime>
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#include "../aes/aescpp.h"
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#include "CommandClass.h"
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namespace OpenZWave
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{
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/** \brief Implements COMMAND_CLASS_SECURITY (0x98), a Z-Wave device command class.
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*/
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typedef struct SecurityPayload {
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uint8 m_length;
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uint8 m_part;
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uint8 m_data[32];
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string logmsg;
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} SecurityPayload;
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/* This should probably go into its own file, but its so simple... and only the Security Command Class uses it currently
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*/
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class Timer {
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public:
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Timer() {
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this->Reset();
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};
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virtual ~Timer() {};
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void Reset() {
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start = clock();
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}
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inline uint64 GetMilliseconds() {
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return (uint64 )(((clock() - start) / (double)CLOCKS_PER_SEC) / 1000);
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}
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private:
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clock_t start;
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};
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class Security: public CommandClass
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{
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public:
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static CommandClass* Create( uint32 const _homeId, uint8 const _nodeId ){ return new Security( _homeId, _nodeId ); }
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virtual ~Security();
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static uint8 const StaticGetCommandClassId(){ return 0x98; }
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static string const StaticGetCommandClassName(){ return "COMMAND_CLASS_SECURITY"; }
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bool Init();
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// From CommandClass
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virtual uint8 const GetCommandClassId()const{ return StaticGetCommandClassId(); }
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virtual string const GetCommandClassName()const{ return StaticGetCommandClassName(); }
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virtual bool HandleMsg( uint8 const* _data, uint32 const _length, uint32 const _instance = 1 );
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void ReadXML(TiXmlElement const* _ccElement);
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void WriteXML(TiXmlElement* _ccElement);
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void SendMsg( Msg* _msg );
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protected:
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void CreateVars( uint8 const _instance );
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private:
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Security( uint32 const _homeId, uint8 const _nodeId );
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bool RequestState( uint32 const _requestFlags, uint8 const _instance, Driver::MsgQueue const _queue);
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bool RequestValue( uint32 const _requestFlags, uint8 const _index, uint8 const _instance, Driver::MsgQueue const _queue);
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bool HandleSupportedReport(uint8 const* _data, uint32 const _length);
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void SendNonceReport();
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void RequestNonce();
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bool GenerateAuthentication( uint8 const* _data, uint32 const _length, uint8 const _sendingNode, uint8 const _receivingNode, uint8 *iv, uint8* _authentication);
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bool DecryptMessage( uint8 const* _data, uint32 const _length );
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bool EncryptMessage( uint8 const* _nonce );
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void QueuePayload( SecurityPayload * _payload );
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bool createIVFromPacket_inbound(uint8 const* _data, uint8 *iv);
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bool createIVFromPacket_outbound(uint8 const* _data, uint8 *iv);
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void SetupNetworkKey();
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Mutex *m_queueMutex;
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list<SecurityPayload *> m_queue; // Messages waiting to be sent when the device wakes up
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bool m_waitingForNonce;
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uint8 m_sequenceCounter;
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Timer m_nonceTimer;
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uint8 currentNonce[8];
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bool m_networkkeyset;
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aes_encrypt_ctx *AuthKey;
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aes_encrypt_ctx *EncryptKey;
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uint8 *nk;
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bool m_schemeagreed;
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bool m_secured;
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};
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} // namespace OpenZWave
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#endif
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