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Diffstat (limited to 'blocks/src/lib/p25cai_du_handler.h')
-rw-r--r-- | blocks/src/lib/p25cai_du_handler.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/blocks/src/lib/p25cai_du_handler.h b/blocks/src/lib/p25cai_du_handler.h new file mode 100644 index 0000000..4a601bb --- /dev/null +++ b/blocks/src/lib/p25cai_du_handler.h @@ -0,0 +1,84 @@ +/* -*- C++ -*- */ + +/* + * Copyright 2008-2011 Steve Glass + * + * This file is part of OP25. + * + * OP25 is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * OP25 is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + * License for more details. + * + * You should have received a copy of the GNU General Public License + * along with OP25; see the file COPYING. If not, write to the Free + * Software Foundation, Inc., 51 Franklin Street, Boston, MA + * 02110-1301, USA. +*/ + +#ifndef INCLUDED_P25CAI_DU_HANDLER_H +#define INCLUDED_P25CAI_DU_HANDLER_H + +#include <data_unit_handler.h> +#include <string> + +/** + * This data_unit_handler forwards received frames using p25cai - a + * straighforward encapsulation of the P25 CAI in a UDP datagram. This + * format is understood by Wireshark and replaces the use of TUN/TAP + * which require root privileges and are not present by default on + * some platforms. + */ +class p25cai_du_handler : public data_unit_handler +{ + +public: + + /** + * p25cai_du_handler constructor. + * + * \param next The next data_unit_handler. + * \param addr The address of the receiver. + * \param port The port number of the receiver. + */ + p25cai_du_handler(data_unit_handler_sptr next, const char *addr, int port); + + /** + * p25cai_du_handler virtual destructor. + */ + virtual ~p25cai_du_handler(); + + /** + * Handle a received P25 frame. + * + * \param du A non-null data_unit_sptr to handle. + */ + virtual void handle(data_unit_sptr du); + + /** + * Return a pointer to a string identifying the destination address. + * + * \return A pointer to a NUL-terminated character string. + */ + const char *destination() const; + +private: + + /** + * file descriptor for the UDP socket. + */ + int32_t d_cai; + + /** + * A string identifying the address of the receiver. + */ + std::string d_address; + +}; + +#endif /* INCLUDED_P25CAI_DU_HANDLER_H */ |