123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
/* -*- c++ -*- */
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/*
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* @file
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* @author (C) 2014 by Piotr Krysik <ptrkrysik@gmail.com>
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* @section LICENSE
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*
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* Gr-gsm is free software; you can redistribute it and/or modify
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* it 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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* Gr-gsm 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 General Public 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 gr-gsm; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gnuradio/io_signature.h>
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#include <stdio.h>
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#include "message_printer_impl.h"
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#include "grgsm/gsmtap.h"
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#include <grgsm/endian.h>
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extern "C" {
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#include <osmocom/gsm/a5.h>
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}
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namespace gr {
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namespace gsm {
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void message_printer_impl::message_print(pmt::pmt_t msg)
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{
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pmt::pmt_t message_plus_header_blob = pmt::cdr(msg);
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uint8_t * message_plus_header = (uint8_t *)pmt::blob_data(message_plus_header_blob);
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size_t message_plus_header_len=pmt::blob_length(message_plus_header_blob);
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gsmtap_hdr * header = (gsmtap_hdr *)message_plus_header;
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uint32_t frame_nr = be32toh(header->frame_number);
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std::ostringstream out;
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out << d_prepend_string;
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if (d_prepend_fnr)
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{
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out << frame_nr;
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}
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if (d_prepend_fnr && d_prepend_frame_count)
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{
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out << " ";
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}
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if (d_prepend_frame_count)
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{
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// calculate fn count using libosmogsm
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out << osmo_a5_fn_count(frame_nr);
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}
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if (d_prepend_fnr || d_prepend_frame_count)
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{
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out << ": ";
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}
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int start_index = sizeof(gsmtap_hdr);
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if (d_print_gsmtap_header)
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{
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start_index = 0;
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}
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for(int ii=start_index; ii<message_plus_header_len; ii++)
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{
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out<<" "<<(std::hex)<<std::setw(2)<<std::setfill('0')<<(uint32_t)message_plus_header[ii];
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}
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out << std::endl;
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std::cout << out.str() << std::flush;
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}
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message_printer::sptr
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message_printer::make(pmt::pmt_t prepend_string, bool prepend_fnr,
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bool prepend_frame_count, bool print_gsmtap_header)
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{
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return gnuradio::get_initial_sptr
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(new message_printer_impl(prepend_string, prepend_fnr,
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prepend_frame_count, print_gsmtap_header));
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}
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/*
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* The private constructor
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*/
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message_printer_impl::message_printer_impl(pmt::pmt_t prepend_string, bool prepend_fnr,
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bool prepend_frame_count, bool print_gsmtap_header)
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: gr::block("message_printer",
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gr::io_signature::make(0, 0, 0),
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gr::io_signature::make(0, 0, 0))
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{
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d_prepend_string = prepend_string;
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d_prepend_fnr = prepend_fnr;
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d_prepend_frame_count = prepend_frame_count;
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d_print_gsmtap_header = print_gsmtap_header;
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message_port_register_in(pmt::mp("msgs"));
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set_msg_handler(pmt::mp("msgs"), boost::bind(&message_printer_impl::message_print, this, _1));
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}
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/*
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* Our virtual destructor.
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*/
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message_printer_impl::~message_printer_impl()
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{
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}
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} /* namespace gsm */
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} /* namespace gr */
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