// 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 // // 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 . // This file incorporates work covered by the following copyright and // permission notice: // // Copyright (C) 2012 by Salvatore Sanfilippo // // 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 void receiverPositionChanged(float lat, float lon, float alt) { /* nothing */ (void) lat; (void) lon; (void) alt; } // // =============================== 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(); modeACInit(); } // // ================================ Main ==================================== // static void showHelp(void) { printf( "-----------------------------------------------------------------------------\n" "| faup1090 ModeS conversion %45s |\n" "-----------------------------------------------------------------------------\n" "--net-bo-ipaddr IP address to connect to for Beast data (default: 127.0.0.1)\n" "--net-bo-port Port to connect for Beast data (default: 30005)\n" "--lat Reference/receiver latitude for surface posn (opt)\n" "--lon Reference/receiver longitude for surface posn (opt)\n" "--max-range 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(); } static void sendBeastSettings(struct client *c, const char *settings) { int len; char *buf, *p; len = strlen(settings) * 3; buf = p = alloca(len); while (*settings) { *p++ = 0x1a; *p++ = '1'; *p++ = *settings++; } anetWrite(c->fd, buf, len); } // //========================================================================= // 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); } sendBeastSettings(c, "Cdfj"); // Beast binary, no filters, CRC checks on, no mode A/C // 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; } // //========================================================================= //