New feature: Output in SBS format
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2fe188286e
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11
README.md
11
README.md
@ -152,6 +152,17 @@ Or alternatively to see what's happening on the screen:
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Then you can feed it from different data sources from the internet.
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Port 30003
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---
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Connected clients are served with messages in SBS1 (BaseStation) format, similar to:
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MSG,4,,,738065,,,,,,,,420,179,,,0,,0,0,0,0
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MSG,3,,,738065,,,,,,,35000,,,34.81609,34.07810,,,0,0,0,0
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This can be used to feed data to various sharing sites without the need to use another decoder.
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Antenna
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---
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7
TODO
7
TODO
@ -8,10 +8,3 @@ TODO
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aircraft ICAO address, like: 30xxxx -> Italy.
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* Actually use the fancy --debug feature in order to improve the recognition
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algorithm if possibile.
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* Listen to port 30003 and provide output in the following format, to
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connected clients:
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Server: Welcome to the adsb-server
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MSG,3,0,19,4841D9,19,2013/01/05,15:51:45.747,2013/01/05,15:51:45.747,,33700,,,51.8853,-6.2134,,,0,0,0,0
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MSG,4,0,15,405638,15,2013/01/05,15:51:45.747,2013/01/05,15:51:45.747,,,415,188,,,0,,0,0,0,0
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...
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76
dump1090.c
76
dump1090.c
@ -81,6 +81,7 @@
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#define MODES_INTERACTIVE_TTL 60 /* TTL before being removed */
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#define MODES_NET_MAX_FD 1024
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#define MODES_NET_OUTPUT_SBS_PORT 30003
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#define MODES_NET_OUTPUT_RAW_PORT 30002
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#define MODES_NET_INPUT_RAW_PORT 30001
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#define MODES_NET_HTTP_PORT 8080
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@ -144,6 +145,7 @@ struct {
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char aneterr[ANET_ERR_LEN];
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struct client *clients[MODES_NET_MAX_FD]; /* Our clients. */
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int maxfd; /* Greatest fd currently active. */
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int sbsos; /* SBS output listening socket. */
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int ros; /* Raw output listening socket. */
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int ris; /* Raw input listening socket. */
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int https; /* HTTP listening socket. */
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@ -156,6 +158,7 @@ struct {
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int debug; /* Debugging mode. */
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int net; /* Enable networking. */
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int net_only; /* Enable just networking. */
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int net_output_sbs_port; /* SBS output TCP port. */
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int net_output_raw_port; /* Raw output TCP port. */
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int net_input_raw_port; /* Raw input TCP port. */
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int net_http_port; /* HTTP port. */
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@ -180,6 +183,7 @@ struct {
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long long stat_single_bit_fix;
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long long stat_two_bits_fix;
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long long stat_http_requests;
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long long stat_sbs_connections;
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} Modes;
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/* The struct we use to store information about a decoded message. */
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@ -227,8 +231,9 @@ struct modesMessage {
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};
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void interactiveShowData(void);
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void interactiveReceiveData(struct modesMessage *mm);
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struct aircraft* interactiveReceiveData(struct modesMessage *mm);
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void modesSendRawOutput(struct modesMessage *mm);
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void modesSendSBSOutput(struct modesMessage *mm, struct aircraft *a);
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void useModesMessage(struct modesMessage *mm);
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int fixSingleBitErrors(unsigned char *msg, int bits);
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int fixTwoBitsErrors(unsigned char *msg, int bits);
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@ -258,6 +263,7 @@ void modesInitConfig(void) {
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Modes.raw = 0;
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Modes.net = 0;
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Modes.net_only = 0;
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Modes.net_output_sbs_port = MODES_NET_OUTPUT_SBS_PORT;
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Modes.net_output_raw_port = MODES_NET_OUTPUT_RAW_PORT;
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Modes.net_input_raw_port = MODES_NET_INPUT_RAW_PORT;
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Modes.net_http_port = MODES_NET_HTTP_PORT;
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@ -311,6 +317,7 @@ void modesInit(void) {
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Modes.stat_single_bit_fix = 0;
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Modes.stat_two_bits_fix = 0;
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Modes.stat_http_requests = 0;
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Modes.stat_sbs_connections = 0;
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Modes.exit = 0;
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}
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@ -1369,8 +1376,9 @@ void useModesMessage(struct modesMessage *mm) {
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if (!Modes.stats && (Modes.check_crc == 0 || mm->crcok)) {
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/* Track aircrafts in interactive mode or if the HTTP
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* interface is enabled. */
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if (Modes.interactive || Modes.stat_http_requests > 0) {
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interactiveReceiveData(mm);
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if (Modes.interactive || Modes.stat_http_requests > 0 || Modes.stat_sbs_connections > 0) {
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struct aircraft *a = interactiveReceiveData(mm);
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if (a && Modes.stat_sbs_connections > 0) modesSendSBSOutput(mm, a); /* Feed SBS output clients. */
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}
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/* In non-interactive way, display messages on standard output. */
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if (!Modes.interactive) {
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@ -1552,11 +1560,11 @@ void decodeCPR(struct aircraft *a) {
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}
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/* Receive new messages and populate the interactive mode with more info. */
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void interactiveReceiveData(struct modesMessage *mm) {
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struct aircraft *interactiveReceiveData(struct modesMessage *mm) {
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uint32_t addr;
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struct aircraft *a, *aux;
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if (Modes.check_crc && mm->crcok == 0) return;
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if (Modes.check_crc && mm->crcok == 0) return NULL;
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addr = (mm->aa1 << 16) | (mm->aa2 << 8) | mm->aa3;
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/* Loookup our aircraft or create a new one. */
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@ -1615,6 +1623,7 @@ void interactiveReceiveData(struct modesMessage *mm) {
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}
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}
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}
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return a;
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}
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/* Show the currently captured interactive data on screen. */
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@ -1715,17 +1724,18 @@ void modesInitNet(void) {
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char *descr;
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int *socket;
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int port;
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} services[3] = {
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} services[4] = {
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{"Raw TCP output", &Modes.ros, Modes.net_output_raw_port},
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{"Raw TCP input", &Modes.ris, Modes.net_input_raw_port},
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{"HTTP server", &Modes.https, Modes.net_http_port}
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{"HTTP server", &Modes.https, Modes.net_http_port},
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{"Basestation TCP output", &Modes.sbsos, Modes.net_output_sbs_port}
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};
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int j;
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memset(Modes.clients,0,sizeof(Modes.clients));
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Modes.maxfd = -1;
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for (j = 0; j < 3; j++) {
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for (j = 0; j < 4; j++) {
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int s = anetTcpServer(Modes.aneterr, services[j].port, NULL);
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if (s == -1) {
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fprintf(stderr, "Error opening the listening port %d (%s): %s\n",
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@ -1746,11 +1756,12 @@ void modesAcceptClients(void) {
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int fd, port;
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unsigned int j;
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struct client *c;
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int services[3];
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int services[4];
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services[0] = Modes.ros;
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services[1] = Modes.ris;
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services[2] = Modes.https;
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services[3] = Modes.sbsos;
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for (j = 0; j < sizeof(services)/sizeof(int); j++) {
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fd = anetTcpAccept(Modes.aneterr, services[j], NULL, &port);
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@ -1770,6 +1781,8 @@ void modesAcceptClients(void) {
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anetSetSendBuffer(Modes.aneterr,fd,MODES_NET_SNDBUF_SIZE);
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if (Modes.maxfd < fd) Modes.maxfd = fd;
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if (services[j] == Modes.sbsos) Modes.stat_sbs_connections++;
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j--; /* Try again with the same listening port. */
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if (Modes.debug == MODES_DEBUG_NET)
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@ -1829,6 +1842,48 @@ void modesSendRawOutput(struct modesMessage *mm) {
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modesSendAllClients(Modes.ros, msg, p-msg);
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}
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/* Write SBS output to TCP clients. */
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void modesSendSBSOutput(struct modesMessage *mm, struct aircraft *a) {
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char msg[256], *p = msg;
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int emergency = 0, ground = 0, alert = 0, spi = 0;
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if (mm->msgtype == 4 || mm->msgtype == 5 || mm->msgtype == 21) {
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if (mm->identity == 7500 || mm->identity == 7600 || mm->identity == 7700) emergency = -1; /* identity is calculated/kept in base10 but is actually octal (07500 is represented as 7500) */
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if (mm->fs == 1 || mm->fs == 3) ground = -1;
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if (mm->fs == 2 || mm->fs == 3 || mm->fs == 4) alert = -1;
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if (mm->fs == 4 || mm->fs == 5) spi = -1;
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}
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if (mm->msgtype == 0) {
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p += sprintf(p, "MSG,5,,,%02X%02X%02X,,,,,,,%d,,,,,,,,,,", mm->aa1, mm->aa2, mm->aa3, mm->altitude);
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} else if (mm->msgtype == 4) {
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p += sprintf(p, "MSG,5,,,%02X%02X%02X,,,,,,,%d,,,,,,,%d,%d,%d,%d", mm->aa1, mm->aa2, mm->aa3, mm->altitude, alert, emergency, spi, ground);
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} else if (mm->msgtype == 5) {
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p += sprintf(p, "MSG,6,,,%02X%02X%02X,,,,,,,,,,,,,%d,%d,%d,%d,%d", mm->aa1, mm->aa2, mm->aa3, mm->identity, alert, emergency, spi, ground);
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} else if (mm->msgtype == 11) {
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p += sprintf(p, "MSG,8,,,%02X%02X%02X,,,,,,,,,,,,,,,,,", mm->aa1, mm->aa2, mm->aa3);
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} else if (mm->msgtype == 17 && mm->metype == 4) {
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p += sprintf(p, "MSG,1,,,%02X%02X%02X,,,,,,%s,,,,,,,,0,0,0,0", mm->aa1, mm->aa2, mm->aa3, mm->flight);
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} else if (mm->msgtype == 17 && mm->metype >= 9 && mm->metype <= 18) {
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if (a->lat == 0 && a->lon == 0)
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p += sprintf(p, "MSG,3,,,%02X%02X%02X,,,,,,,%d,,,,,,,0,0,0,0", mm->aa1, mm->aa2, mm->aa3, mm->altitude);
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else
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p += sprintf(p, "MSG,3,,,%02X%02X%02X,,,,,,,%d,,,%1.5f,%1.5f,,,0,0,0,0", mm->aa1, mm->aa2, mm->aa3, mm->altitude, a->lat, a->lon);
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} else if (mm->msgtype == 17 && mm->metype == 19 && mm->mesub == 1) {
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int vr = (mm->vert_rate_sign==0?1:-1) * (mm->vert_rate-1) * 64;
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p += sprintf(p, "MSG,4,,,%02X%02X%02X,,,,,,,,%d,%d,,,%i,,0,0,0,0", mm->aa1, mm->aa2, mm->aa3, a->speed, a->track, vr);
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} else if (mm->msgtype == 21) {
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p += sprintf(p, "MSG,6,,,%02X%02X%02X,,,,,,,,,,,,,%d,%d,%d,%d,%d", mm->aa1, mm->aa2, mm->aa3, mm->identity, alert, emergency, spi, ground);
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}
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if (msg == p) return; // empty string
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*p++ = '\n';
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modesSendAllClients(Modes.sbsos, msg, p-msg);
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}
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/* Turn an hex digit into its 4 bit decimal value.
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* Returns -1 if the digit is not in the 0-F range. */
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int hexDigitVal(int c) {
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@ -2130,6 +2185,7 @@ void showHelp(void) {
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"--net-ro-port <port> TCP listening port for raw output (default: 30002).\n"
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"--net-ri-port <port> TCP listening port for raw input (default: 30001).\n"
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"--net-http-port <port> HTTP server port (default: 8080).\n"
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"--net-sbs-port <port> TCP listening port for BaseStation format output (default: 30003).\n"
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"--no-fix Disable single-bits error correction using CRC.\n"
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"--no-crc-check Disable messages with broken CRC (discouraged).\n"
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"--aggressive More CPU for more messages (two bits fixes, ...).\n"
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@ -2199,6 +2255,8 @@ int main(int argc, char **argv) {
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Modes.net_input_raw_port = atoi(argv[++j]);
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} else if (!strcmp(argv[j],"--net-http-port") && more) {
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Modes.net_http_port = atoi(argv[++j]);
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} else if (!strcmp(argv[j],"--net-sbs-port") && more) {
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Modes.net_output_sbs_port = atoi(argv[++j]);
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} else if (!strcmp(argv[j],"--onlyaddr")) {
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Modes.onlyaddr = 1;
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} else if (!strcmp(argv[j],"--metric")) {
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