// Part of dump1090, a Mode S message decoder for RTLSDR devices.
//
// faup1090.c: cut down version that just does 30005 -> stdout forwarding
//
// Copyright (c) 2014,2015 Oliver Jowett <oliver@mutability.co.uk>
//
// This file is free software: you may copy, redistribute and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation, either version 2 of the License, or (at your
// option) any later version.
//
// This file 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 this program. If not, see <http://www.gnu.org/licenses/>.
// This file incorporates work covered by the following copyright and
// permission notice:
//
// Copyright (C) 2012 by Salvatore Sanfilippo <antirez@gmail.com>
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "dump1090.h"
#include <stdarg.h>
//
// =============================== Initialization ===========================
//
static void faupInitConfig(void) {
// Default everything to zero/NULL
memset(&Modes, 0, sizeof(Modes));
// Now initialise things that should not be 0/NULL to their defaults
Modes.nfix_crc = 1;
Modes.check_crc = 1;
Modes.net = 1;
Modes.net_heartbeat_interval = MODES_NET_HEARTBEAT_INTERVAL;
Modes.maxRange = 1852 * 360; // 360NM default max range; this also disables receiver-relative positions
Modes.quiet = 1;
Modes.net_output_flush_size = MODES_OUT_FLUSH_SIZE;
Modes.net_output_flush_interval = 200; // milliseconds
}
//
//=========================================================================
//
static void faupInit(void) {
// Validate the users Lat/Lon home location inputs
if ( (Modes.fUserLat > 90.0) // Latitude must be -90 to +90
|| (Modes.fUserLat < -90.0) // and
|| (Modes.fUserLon > 360.0) // Longitude must be -180 to +360
|| (Modes.fUserLon < -180.0) ) {
Modes.fUserLat = Modes.fUserLon = 0.0;
} else if (Modes.fUserLon > 180.0) { // If Longitude is +180 to +360, make it -180 to 0
Modes.fUserLon -= 360.0;
}
// If both Lat and Lon are 0.0 then the users location is either invalid/not-set, or (s)he's in the
// Atlantic ocean off the west coast of Africa. This is unlikely to be correct.
// Set the user LatLon valid flag only if either Lat or Lon are non zero. Note the Greenwich meridian
// is at 0.0 Lon,so we must check for either fLat or fLon being non zero not both.
// Testing the flag at runtime will be much quicker than ((fLon != 0.0) || (fLat != 0.0))
Modes.bUserFlags &= ~MODES_USER_LATLON_VALID;
if ((Modes.fUserLat != 0.0) || (Modes.fUserLon != 0.0)) {
Modes.bUserFlags |= MODES_USER_LATLON_VALID;
}
// Prepare error correction tables
modesChecksumInit(1);
icaoFilterInit();
}
//
// ================================ Main ====================================
//
static void showHelp(void) {
printf(
"-----------------------------------------------------------------------------\n"
"| faup1090 ModeS conversion %45s |\n"
"-----------------------------------------------------------------------------\n"
"--net-bo-ipaddr <addr> IP address to connect to for Beast data (default: 127.0.0.1)\n"
"--net-bo-port <port> Port to connect for Beast data (default: 30005)\n"
"--lat <latitude> Reference/receiver latitude for surface posn (opt)\n"
"--lon <longitude> Reference/receiver longitude for surface posn (opt)\n"
"--max-range <distance> Absolute maximum range for position decoding (in nm, default: 360)\n"
"--stdout REQUIRED. Write results to stdout.\n"
"--help Show this help\n"
"\n",
MODES_DUMP1090_VARIANT " " MODES_DUMP1090_VERSION
);
}
//
//=========================================================================
//
// This function is called a few times every second by main in order to
// perform tasks we need to do continuously, like accepting new clients
// from the net, refreshing the screen in interactive mode, and so forth
//
static void backgroundTasks(void) {
icaoFilterExpire();
trackPeriodicUpdate();
modesNetPeriodicWork();
}
//
//=========================================================================
//
int main(int argc, char **argv) {
int j;
int stdout_option = 0;
char *bo_connect_ipaddr = "127.0.0.1";
int bo_connect_port = 30005;
struct client *c;
struct net_service *beast_input, *fatsv_output;
// Set sane defaults
faupInitConfig();
// Parse the command line options
for (j = 1; j < argc; j++) {
int more = j+1 < argc; // There are more arguments
if (!strcmp(argv[j],"--net-bo-port") && more) {
bo_connect_port = atoi(argv[++j]);
} else if (!strcmp(argv[j],"--net-bo-ipaddr") && more) {
bo_connect_ipaddr = argv[++j];
} else if (!strcmp(argv[j],"--lat") && more) {
Modes.fUserLat = atof(argv[++j]);
} else if (!strcmp(argv[j],"--lon") && more) {
Modes.fUserLon = atof(argv[++j]);
} else if (!strcmp(argv[j],"--max-range") && more) {
Modes.maxRange = atof(argv[++j]) * 1852.0; // convert to metres
} else if (!strcmp(argv[j],"--help")) {
showHelp();
exit(0);
} else if (!strcmp(argv[j],"--stdout")) {
stdout_option = 1;
} else {
fprintf(stderr,
"Unknown or not enough arguments for option '%s'.\n\n",
argv[j]);
showHelp();
exit(1);
}
}
if (!stdout_option) {
fprintf(stderr,
"--stdout is required, output always goes to stdout.\n");
showHelp();
exit(1);
}
// Initialization
faupInit();
modesInitNet();
// Set up input connection
beast_input = makeBeastInputService();
c = serviceConnect(beast_input, bo_connect_ipaddr, bo_connect_port);
if (!c) {
fprintf (stderr,
"faup1090: failed to connect to %s:%d (is dump1090 running?): %s\n",
bo_connect_ipaddr, bo_connect_port, Modes.aneterr);
exit (1);
}
// Set up output connection on stdout
fatsv_output = makeFatsvOutputService();
createGenericClient(fatsv_output, STDOUT_FILENO);
// Run it until we've lost either connection
while (!Modes.exit && beast_input->connections && fatsv_output->connections) {
backgroundTasks();
usleep(100000);
}
return 0;
}
//
//=========================================================================
//