86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
/* -*- C++ -*- */
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/*
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* Copyright 2008-2011 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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#ifndef INCLUDED_P25CAI_DU_HANDLER_H
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#define INCLUDED_P25CAI_DU_HANDLER_H
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#include "data_unit_handler.h"
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#include <string>
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/**
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* This data_unit_handler forwards received frames using p25cai - a
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* straighforward encapsulation of the P25 CAI in a UDP datagram. This
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* format is understood by Wireshark and replaces the use of TUN/TAP
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* which require root privileges and are not present by default on
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* some platforms.
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*/
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class p25cai_du_handler : public data_unit_handler
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{
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public:
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/**
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* p25cai_du_handler constructor.
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*
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* \param next The next data_unit_handler.
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* \param addr The address of the receiver.
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* \param port The port number of the receiver.
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*/
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p25cai_du_handler(data_unit_handler_sptr next, const char *addr, int port);
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/**
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* p25cai_du_handler virtual destructor.
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*/
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virtual ~p25cai_du_handler();
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/**
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* Handle a received P25 frame.
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*
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* \param du A non-null data_unit_sptr to handle.
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*/
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virtual void handle(data_unit_sptr du);
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/**
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* Return a pointer to a string identifying the destination address.
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*
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* \return A pointer to a NUL-terminated character string.
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*/
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const char *destination() const;
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private:
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/**
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* file descriptor for the UDP socket.
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*/
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int32_t d_cai;
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/**
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* A string identifying the address of the receiver.
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*/
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std::string d_address;
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};
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#endif /* INCLUDED_P25CAI_DU_HANDLER_H */
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