// view1090, a Mode S messages viewer for dump1090 devices. // // Copyright (C) 2014 by Malcolm Robb // // 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" // // ============================= Utility functions ========================== // void sigintHandler(int dummy) { MODES_NOTUSED(dummy); signal(SIGINT, SIG_DFL); // reset signal handler - bit extra safety Modes.exit = 1; // Signal to threads that we are done } void receiverPositionChanged(float lat, float lon, float alt) { /* nothing */ (void) lat; (void) lon; (void) alt; } // // =============================== Initialization =========================== // void view1090InitConfig(void) { // Default everything to zero/NULL memset(&Modes, 0, sizeof(Modes)); // Now initialise things that should not be 0/NULL to their defaults Modes.check_crc = 1; Modes.interactive_display_ttl = MODES_INTERACTIVE_DISPLAY_TTL; Modes.interactive = 1; Modes.maxRange = 1852 * 300; // 300NM default max range } // //========================================================================= // void view1090Init(void) { pthread_mutex_init(&Modes.data_mutex,NULL); pthread_cond_init(&Modes.data_cond,NULL); #ifdef _WIN32 if ( (!Modes.wsaData.wVersion) && (!Modes.wsaData.wHighVersion) ) { // Try to start the windows socket support if (WSAStartup(MAKEWORD(2,1),&Modes.wsaData) != 0) { fprintf(stderr, "WSAStartup returned Error\n"); } } #endif // 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(Modes.nfix_crc); icaoFilterInit(); modeACInit(); interactiveInit(); } // // ================================ Main ==================================== // void showHelp(void) { printf( "-----------------------------------------------------------------------------\n" "| view1090 ModeS Viewer %45s |\n" "-----------------------------------------------------------------------------\n" "--no-interactive Disable interactive mode, print messages to stdout\n" "--interactive-ttl Remove from list if idle for (default: 60)\n" "--modeac Enable decoding of SSR modes 3/A & 3/C\n" "--net-bo-ipaddr TCP Beast output listen IPv4 (default: 127.0.0.1)\n" "--net-bo-port TCP Beast output listen port (default: 30005)\n" "--lat Reference/receiver latitide 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: 300)\n" "--no-crc-check Disable messages with broken CRC (discouraged)\n" "--no-fix Disable single-bits error correction using CRC\n" "--fix Enable single-bits error correction using CRC\n" "--aggressive More CPU for more messages (two bits fixes, ...)\n" "--metric Use metric units (meters, km/h, ...)\n" "--show-only Show only messages from the given ICAO on stdout\n" "--help Show this help\n", MODES_DUMP1090_VARIANT " " MODES_DUMP1090_VERSION ); } // //========================================================================= // int main(int argc, char **argv) { int j; struct client *c; struct net_service *s; char *bo_connect_ipaddr = "127.0.0.1"; int bo_connect_port = 30005; // Set sane defaults view1090InitConfig(); signal(SIGINT, sigintHandler); // Define Ctrl/C handler (exit program) // 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],"--modeac")) { Modes.mode_ac = 1; } else if (!strcmp(argv[j],"--no-interactive")) { Modes.interactive = 0; } else if (!strcmp(argv[j],"--show-only") && more) { Modes.show_only = (uint32_t) strtoul(argv[++j], NULL, 16); Modes.interactive = 0; } else if (!strcmp(argv[j],"--interactive-ttl") && more) { Modes.interactive_display_ttl = (uint64_t)(1000 * atof(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],"--metric")) { Modes.metric = 1; } else if (!strcmp(argv[j],"--no-crc-check")) { Modes.check_crc = 0; } else if (!strcmp(argv[j],"--fix")) { Modes.nfix_crc = 1; } else if (!strcmp(argv[j],"--no-fix")) { Modes.nfix_crc = 0; } else if (!strcmp(argv[j],"--aggressive")) { Modes.nfix_crc = MODES_MAX_BITERRORS; } 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 { fprintf(stderr, "Unknown or not enough arguments for option '%s'.\n\n", argv[j]); showHelp(); exit(1); } } #ifdef _WIN32 // Try to comply with the Copyright license conditions for binary distribution if (!Modes.quiet) {showCopyright();} #define MSG_DONTWAIT 0 #endif // Initialization view1090Init(); modesInitNet(); // Try to connect to the selected ip address and port. We only support *ONE* input connection which we initiate.here. s = makeBeastInputService(); c = serviceConnect(s, bo_connect_ipaddr, bo_connect_port); if (!c) { fprintf(stderr, "Failed to connect to %s:%d: %s\n", bo_connect_ipaddr, bo_connect_port, Modes.aneterr); exit(1); } sendBeastSettings(c, "Cd"); // Beast binary format, no filters sendBeastSettings(c, Modes.mode_ac ? "J" : "j"); // Mode A/C on or off sendBeastSettings(c, Modes.check_crc ? "f" : "F"); // CRC checks on or off // Keep going till the user does something that stops us while (!Modes.exit) { icaoFilterExpire(); trackPeriodicUpdate(); modesNetPeriodicWork(); if (Modes.interactive) interactiveShowData(); if (s->connections == 0) { // lost input connection, try to reconnect usleep(1000000); c = serviceConnect(s, bo_connect_ipaddr, bo_connect_port); continue; } usleep(100000); } interactiveCleanup(); return (0); } // //========================================================================= //