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/* -*- c++ -*- */
/*
* @file
* @author (C) 2017 by Roman Khassraf <rkhassraf@gmail.com>
* @section LICENSE
*
* Gr-gsm 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.
*
* Gr-gsm 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 gr-gsm; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gnuradio/io_signature.h>
#include <grgsm/gsmtap.h>
#include <unistd.h>
#include <grgsm/endian.h>
#include "collect_system_info_impl.h"
namespace gr {
namespace gsm {
void collect_system_info_impl::process_messages(pmt::pmt_t msg){
pmt::pmt_t message_plus_header_blob = pmt::cdr(msg);
uint8_t * message_plus_header = (uint8_t *)pmt::blob_data(message_plus_header_blob);
gsmtap_hdr * header = (gsmtap_hdr *)message_plus_header;
uint8_t * msg_elements = (uint8_t *)(message_plus_header+sizeof(gsmtap_hdr));
uint8_t chan_type = header->sub_type;
if (chan_type == GSMTAP_CHANNEL_BCCH && msg_elements[1] == 0x06)
{
int frame_nr = be32toh(header->frame_number);
if (msg_elements[2] == 0x19)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 1");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[2] == 0x1a)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 2");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[2] == 0x1b)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 3");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[2] == 0x1c)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 4");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[2] == 0x02)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 2bis");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[2] == 0x03)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 2ter");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[2] == 0x07)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 2quater");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[2] == 0x00)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 13");
d_sit_data.push_back(get_hex_string(msg_elements));
}
}
else if ((chan_type == (GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_SDCCH)
|| chan_type == (GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_SDCCH4)
|| chan_type == (GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_SDCCH8)
|| chan_type == (GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_TCH_F)
|| chan_type == (GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_TCH_H))
&& msg_elements[5] == 0x06)
{
int frame_nr = be32toh(header->frame_number);
if (msg_elements[6] == 0x1D)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 5");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[6] == 0x1E)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 6");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[6] == 0x05)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 5bis");
d_sit_data.push_back(get_hex_string(msg_elements));
}
else if (msg_elements[6] == 0x06)
{
d_framenumbers.push_back(frame_nr);
d_sit_types.push_back("System Information Type 5ter");
d_sit_data.push_back(get_hex_string(msg_elements));
}
}
}
std::vector<int> collect_system_info_impl::get_framenumbers()
{
return d_framenumbers;
}
std::vector<std::string> collect_system_info_impl::get_system_information_type()
{
return d_sit_types;
}
std::vector<std::string> collect_system_info_impl::get_data()
{
return d_sit_data;
}
std::string collect_system_info_impl::get_hex_string(uint8_t * msg_elements)
{
std::stringstream sstream;
for (int i=0; i<23; i++)
{
sstream << std::setfill ('0') << std::setw(2) << std::hex << static_cast<int>(msg_elements[i]);
}
return sstream.str();
}
collect_system_info::sptr
collect_system_info::make()
{
return gnuradio::get_initial_sptr
(new collect_system_info_impl());
}
/*
* The private constructor
*/
collect_system_info_impl::collect_system_info_impl()
: gr::block("collect_system_info",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(0, 0, 0))
{
message_port_register_in(pmt::mp("msgs"));
set_msg_handler(pmt::mp("msgs"), boost::bind(&collect_system_info_impl::process_messages, this, _1));
}
/*
* Our virtual destructor.
*/
collect_system_info_impl::~collect_system_info_impl()
{
}
} /* namespace gsm */
} /* namespace gr */
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