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json_out.c
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#include "readsb.h"
/*
__attribute__ ((format(printf, 3, 0))) static char *safe_vsnprintf(char *p, char *end, const char *format, va_list ap) {
p += vsnprintf(p < end ? p : NULL, p < end ? (size_t) (end - p) : 0, format, ap);
return p;
}
*/
static const char *trimSpace(const char *in, char *out, int len) {
out[len] = '\0';
int found = 0;
for (int i = len - 1; i >= 0; i--) {
if (!found && in[i] == ' ') {
out[i] = '\0';
} else if (in[i] == '\0') {
out[i] = '\0';
} else {
out[i] = in[i];
found = 1; // found non space character
}
}
return out;
}
//
//=========================================================================
//
// Return a description of planes in json. No metric conversion
//
static const char *jsonEscapeString(const char *str, char *buf, int len) {
const char *in = str;
char *out = buf, *end = buf + len - 10;
for (; *in && out < end; ++in) {
unsigned char ch = *in;
if (ch == '"' || ch == '\\') {
*out++ = '\\';
*out++ = ch;
} else if (ch < 32 || ch > 126) {
out = safe_snprintf(out, end, "\\u%04x", ch);
} else {
*out++ = ch;
}
}
*out++ = 0;
return buf;
}
static inline double getSignal(struct aircraft *a) {
double sum;
if (likely(a->signalNext >= 8)) {
sum = a->signalLevel[0] + a->signalLevel[1] + a->signalLevel[2] + a->signalLevel[3] +
a->signalLevel[4] + a->signalLevel[5] + a->signalLevel[6] + a->signalLevel[7];
} else if (a->signalNext >= 4) {
sum = 0;
for (uint32_t i = 0; i < a->signalNext; i++) {
sum += a->signalLevel[i];
}
} else {
sum = 0;
}
return 10 * log10(sum / 8 + 1.125e-5);
}
static char *append_flags(char *p, char *end, struct aircraft *a, datasource_t source) {
p = safe_snprintf(p, end, "[");
char *start = p;
if (a->callsign_valid.source == source)
p = safe_snprintf(p, end, "\"callsign\",");
if (a->baro_alt_valid.source == source)
p = safe_snprintf(p, end, "\"altitude\",");
if (a->geom_alt_valid.source == source)
p = safe_snprintf(p, end, "\"alt_geom\",");
if (a->gs_valid.source == source)
p = safe_snprintf(p, end, "\"gs\",");
if (a->ias_valid.source == source)
p = safe_snprintf(p, end, "\"ias\",");
if (a->tas_valid.source == source)
p = safe_snprintf(p, end, "\"tas\",");
if (a->mach_valid.source == source)
p = safe_snprintf(p, end, "\"mach\",");
if (a->track_valid.source == source)
p = safe_snprintf(p, end, "\"track\",");
if (a->track_rate_valid.source == source)
p = safe_snprintf(p, end, "\"track_rate\",");
if (a->roll_valid.source == source)
p = safe_snprintf(p, end, "\"roll\",");
if (a->mag_heading_valid.source == source)
p = safe_snprintf(p, end, "\"mag_heading\",");
if (a->true_heading_valid.source == source)
p = safe_snprintf(p, end, "\"true_heading\",");
if (a->baro_rate_valid.source == source)
p = safe_snprintf(p, end, "\"baro_rate\",");
if (a->geom_rate_valid.source == source)
p = safe_snprintf(p, end, "\"geom_rate\",");
if (a->squawk_valid.source == source)
p = safe_snprintf(p, end, "\"squawk\",");
if (a->emergency_valid.source == source)
p = safe_snprintf(p, end, "\"emergency\",");
if (a->nav_qnh_valid.source == source)
p = safe_snprintf(p, end, "\"nav_qnh\",");
if (a->nav_altitude_mcp_valid.source == source)
p = safe_snprintf(p, end, "\"nav_altitude_mcp\",");
if (a->nav_altitude_fms_valid.source == source)
p = safe_snprintf(p, end, "\"nav_altitude_fms\",");
if (a->nav_heading_valid.source == source)
p = safe_snprintf(p, end, "\"nav_heading\",");
if (a->nav_modes_valid.source == source)
p = safe_snprintf(p, end, "\"nav_modes\",");
if (a->pos_reliable_valid.source == source)
p = safe_snprintf(p, end, "\"lat\",\"lon\",\"nic\",\"rc\",");
if (a->nic_baro_valid.source == source)
p = safe_snprintf(p, end, "\"nic_baro\",");
if (a->nac_p_valid.source == source)
p = safe_snprintf(p, end, "\"nac_p\",");
if (a->nac_v_valid.source == source)
p = safe_snprintf(p, end, "\"nac_v\",");
if (a->sil_valid.source == source)
p = safe_snprintf(p, end, "\"sil\",\"sil_type\",");
if (a->gva_valid.source == source)
p = safe_snprintf(p, end, "\"gva\",");
if (a->sda_valid.source == source)
p = safe_snprintf(p, end, "\"sda\",");
if (p != start)
--p;
p = safe_snprintf(p, end, "]");
return p;
}
static struct {
nav_modes_t flag;
const char *name;
} nav_modes_names[] = {
{ NAV_MODE_AUTOPILOT, "autopilot"},
{ NAV_MODE_VNAV, "vnav"},
{ NAV_MODE_ALT_HOLD, "althold"},
{ NAV_MODE_APPROACH, "approach"},
{ NAV_MODE_LNAV, "lnav"},
{ NAV_MODE_TCAS, "tcas"},
{ 0, NULL}
};
static char *append_nav_modes(char *p, char *end, nav_modes_t flags, const char *quote, const char *sep) {
int first = 1;
for (int i = 0; nav_modes_names[i].name; ++i) {
if (!(flags & nav_modes_names[i].flag)) {
continue;
}
if (!first) {
p = safe_snprintf(p, end, "%s", sep);
}
first = 0;
p = safe_snprintf(p, end, "%s%s%s", quote, nav_modes_names[i].name, quote);
}
return p;
}
const char *nav_modes_flags_string(nav_modes_t flags) {
static char buf[256];
buf[0] = 0;
append_nav_modes(buf, buf + sizeof (buf), flags, "", " ");
return buf;
}
void printACASInfoShort(uint32_t addr, unsigned char *MV, struct aircraft *a, struct modesMessage *mm, int64_t now) {
char buf[512];
char *p = buf;
char *end = buf + sizeof(buf);
p = sprintACASInfoShort(p, end, addr, MV, a, mm, now);
if (p == buf) // nothing written
return;
if (p - buf >= (int) sizeof(buf)) {
fprintf(stderr, "printACAS buffer insufficient!\n");
return;
}
printf("%s\n", buf);
fflush(stdout); // FLUSH
}
void logACASInfoShort(uint32_t addr, unsigned char *bytes, struct aircraft *a, struct modesMessage *mm, int64_t now) {
bool rat = getbit(bytes, 27); // clear of conflict / RA terminated
int64_t dedupMaxIval = 5000;
int64_t deduplicationInterval = rat ? dedupMaxIval : 300; // in ms
#define DEDUPSIZE 1024
#define LOGBYTES 7
static char lastLogBytes[DEDUPSIZE][LOGBYTES];
static uint32_t lastLogAddr[DEDUPSIZE];
static int64_t lastLogTimestamp[DEDUPSIZE];
static int nextIndex;
for (int k = 0; k < nextIndex; k++) {
if (lastLogAddr[k] == addr && now - lastLogTimestamp[k] < deduplicationInterval && !memcmp(lastLogBytes[k], bytes, 7)) {
//fprintf(stderr, ".");
return;
}
}
//fprintf(stderr, ",\n");
lastLogAddr[nextIndex] = addr;
lastLogTimestamp[nextIndex] = now;
memcpy(lastLogBytes[nextIndex], bytes, 7);
nextIndex++;
int moveIndex = 0;
for (; moveIndex < nextIndex && now - lastLogTimestamp[moveIndex] > dedupMaxIval; moveIndex++) {
}
if (nextIndex == DEDUPSIZE) {
moveIndex = DEDUPSIZE * 1 / 8;
}
if (moveIndex > DEDUPSIZE / 128) {
//int oldSize = nextIndex;
int newSize = nextIndex - moveIndex;
//fprintf(stderr, "old size: %d, move index: %d, new size: %d\n", oldSize, moveIndex, newSize);
memmove(lastLogBytes[0], lastLogBytes[moveIndex], newSize * LOGBYTES);
memmove(&lastLogAddr[0], &lastLogAddr[moveIndex], newSize * sizeof lastLogAddr[0]);
memmove(&lastLogTimestamp[0], &lastLogTimestamp[moveIndex], newSize * sizeof(lastLogTimestamp[0]));
nextIndex = newSize;
}
#undef DEDUPSIZE
#undef LOGBYTES
if (Modes.acasFD1 > 0) {
char buf[512];
char *p = buf;
char *end = buf + sizeof(buf);
p = sprintACASInfoShort(p, end, addr, bytes, a, mm, now);
p = safe_snprintf(p, end, "\n");
if (p - buf >= (int) sizeof(buf) - 1) {
fprintf(stderr, "logACAS csv buffer insufficient!\n");
} else {
check_write(Modes.acasFD1, buf, p - buf, "acas.csv");
}
}
if (Modes.acasFD2 > 0) {
char buf[2048];
char *p = buf;
char *end = buf + sizeof(buf);
p = sprintAircraftObject(p, end, a, now, 0, mm);
p = safe_snprintf(p, end, "\n");
if (p - buf >= (int) sizeof(buf) - 1) {
fprintf(stderr, "logACAS json buffer insufficient!\n");
} else {
check_write(Modes.acasFD2, buf, p - buf, "acas.json");
}
}
}
static char *sprintACASJson(char *p, char *end, unsigned char *bytes, struct modesMessage *mm, int64_t now) {
bool ara = getbit(bytes, 9);
bool rat = getbit(bytes, 27);
bool mte = getbit(bytes, 28);
char timebuf[128];
struct tm utc;
time_t time = now / 1000;
gmtime_r(&time, &utc);
strftime(timebuf, 128, "%F %T", &utc);
timebuf[127] = 0;
p = safe_snprintf(p, end, "{\"utc\":\"%s.%d\"", timebuf, (int)((now % 1000) / 100));
p = safe_snprintf(p, end, ",\"unix_timestamp\":%.2f", now / 1000.0);
if (mm && mm->acas_ra_valid) {
if (Modes.debug_ACAS && !checkAcasRaValid(bytes, mm, 0)) {
p = safe_snprintf(p, end, ",\"debug\":true");
}
p = safe_snprintf(p, end, ",\"df_type\":%d", mm->msgtype);
p = safe_snprintf(p, end, ",\"full_bytes\":\"");
for (int i = 0; i < mm->msgbits / 8; ++i) {
p = safe_snprintf(p, end, "%02X", (unsigned) mm->msg[i]);
}
p = safe_snprintf(p, end, "\"");
}
p = safe_snprintf(p, end, ",\"bytes\":\"");
for (int i = 0; i < 7; ++i) {
p = safe_snprintf(p, end, "%02X", (unsigned) bytes[i]);
}
p = safe_snprintf(p, end, "\"");
p = safe_snprintf(p, end, ",\"ARA\":\"");
for (int i = 9; i <= 15; i++) p = safe_snprintf(p, end, "%u", getbit(bytes, i));
p = safe_snprintf(p, end, "\"");
p = safe_snprintf(p, end, ",\"RAT\":\"%u\"", getbit(bytes, 27));
p = safe_snprintf(p, end, ",\"MTE\":\"%u\"", getbit(bytes, 28));
p = safe_snprintf(p, end, ",\"RAC\":\"");
for (int i = 23; i <= 26; i++) p = safe_snprintf(p, end, "%u", getbit(bytes, i));
p = safe_snprintf(p, end, "\"");
p = safe_snprintf(p, end, ",\"advisory_complement\":\"");
if (getbits(bytes, 23, 26)) {
bool notfirst = false;
char *racs[4] = { "Do not pass below", "Do not pass above", "Do not turn left", "Do not turn right" };
for (int i = 23; i <= 26; i++) {
if (getbit(bytes, i)) {
if (notfirst)
p = safe_snprintf(p, end, "; ");
p = safe_snprintf(p, end, "%s", racs[i-23]);
notfirst = true;
}
}
}
p = safe_snprintf(p, end, "\"");
// https://mode-s.org/decode/book-the_1090mhz_riddle-junzi_sun.pdf
//
// https://www.faa.gov/documentlibrary/media/advisory_circular/tcas%20ii%20v7.1%20intro%20booklet.pdf
/* RAs can be classified as positive (e.g.,
climb, descend) or negative (e.g., limit climb
to 0 fpm, limit descend to 500 fpm). The
term "Vertical Speed Limit" (VSL) is
equivalent to "negative." RAs can also be
classified as preventive or corrective,
depending on whether own aircraft is, or is
not, in conformance with the RA target
altitude rate. Corrective RAs require a
change in vertical speed; preventive RAs do
not require a change in vertical speed
*/
p = safe_snprintf(p, end, ",\"advisory\":\"");
if (rat) {
p = safe_snprintf(p, end, "Clear of Conflict");
} else if (ara) {
bool corr = getbit(bytes, 10); // corrective / preventive
bool down = getbit(bytes, 11); // downward sense / upward sense
bool increase = getbit(bytes, 12); // increase rate
bool reversal = getbit(bytes, 13); // sense reversal
bool crossing = getbit(bytes, 14); // altitude crossing
bool positive = getbit(bytes, 15);
// positive: (Maintain climb / descent) / (Climb / descend): requires more than 1500 fpm vertical rate
// !positive: (Do not / reduce) (climb / descend)
if (corr && positive) {
if (!reversal) {
// reversal has priority and comes later
} else if (increase) {
p = safe_snprintf(p, end, "Increase ");
}
if (down)
p = safe_snprintf(p, end, "Descend");
else
p = safe_snprintf(p, end, "Climb");
if (reversal) {
if (down)
p = safe_snprintf(p, end, "; Descend");
else
p = safe_snprintf(p, end, "; Climb");
p = safe_snprintf(p, end, " NOW");
}
if (crossing) {
p = safe_snprintf(p, end, "; Crossing");
if (down)
p = safe_snprintf(p, end, " Descend");
else
p = safe_snprintf(p, end, " Climb");
}
}
if (corr && !positive) {
p = safe_snprintf(p, end, "Level Off");
}
if (!corr && positive) {
p = safe_snprintf(p, end, "Maintain vertical Speed");
if (crossing) {
p = safe_snprintf(p, end, "; Crossing Maintain");
}
}
if (!corr && !positive) {
p = safe_snprintf(p, end, "Monitor vertical Speed");
}
} else if (!ara && mte) {
if (getbit(bytes, 10))
p = safe_snprintf(p, end, " Correct upwards;");
if (getbit(bytes, 11))
p = safe_snprintf(p, end, " Climb required;");
if (getbit(bytes, 12))
p = safe_snprintf(p, end, " Correct downwards;");
if (getbit(bytes, 13))
p = safe_snprintf(p, end, " Descent required;");
if (getbit(bytes, 14))
p = safe_snprintf(p, end, " Crossing;");
if (getbit(bytes, 15))
p = safe_snprintf(p, end, " Increase / Maintain vertical rate");
else
p = safe_snprintf(p, end, " Reduce / Limit vertical rate");
}
p = safe_snprintf(p, end, "\"");
int tti = getbits(bytes, 29, 30);
p = safe_snprintf(p, end, ",\"TTI\":\"");
for (int i = 29; i <= 30; i++) p = safe_snprintf(p, end, "%u", getbit(bytes, i));
p = safe_snprintf(p, end, "\"");
if (tti == 1) {
uint32_t threatAddr = getbits(bytes, 31, 54);
p = safe_snprintf(p, end, ",\"threat_id_hex\":\"%06x\"", threatAddr);
}
p = safe_snprintf(p, end, "}");
return p;
}
char *sprintACASInfoShort(char *p, char *end, uint32_t addr, unsigned char *bytes, struct aircraft *a, struct modesMessage *mm, int64_t now) {
bool ara = getbit(bytes, 9);
bool rat = getbit(bytes, 27);
bool mte = getbit(bytes, 28);
char timebuf[128];
struct tm utc;
time_t time = now / 1000;
gmtime_r(&time, &utc);
strftime(timebuf, 128, "%F", &utc);
timebuf[127] = 0;
int debug = 0;
if (Modes.debug_ACAS && mm && !checkAcasRaValid(bytes, mm, 0)) {
debug = 1;
p = safe_snprintf(p, end, "DEBUG ");
} else {
p = safe_snprintf(p, end, "%s", timebuf);
}
p = safe_snprintf(p, end, ",");
strftime(timebuf, 128, "%T", &utc);
timebuf[127] = 0;
p = safe_snprintf(p, end, "%s.%d, %06x,DF:,", timebuf, (int)((now % 1000) / 100), addr);
if (mm)
p = safe_snprintf(p, end, "%2u", mm->msgtype);
else
p = safe_snprintf(p, end, " ");
p = safe_snprintf(p, end, ",bytes:,");
for (int i = 0; i < 7; ++i) {
p = safe_snprintf(p, end, "%02X", (unsigned) bytes[i]);
}
p = safe_snprintf(p, end, ",");
if (a && trackDataValid(&a->pos_reliable_valid))
p = safe_snprintf(p, end, "%11.6f,", a->latReliable);
else
p = safe_snprintf(p, end, " ,");
if (a && trackDataValid(&a->pos_reliable_valid))
p = safe_snprintf(p, end, "%11.6f,", a->lonReliable);
else
p = safe_snprintf(p, end, " ,");
if (a && altBaroReliable(a))
p = safe_snprintf(p, end, "%5d,ft,", a->baro_alt);
else
p = safe_snprintf(p, end, " ,ft,");
if (a && trackDataValid(&a->geom_rate_valid)) {
p = safe_snprintf(p, end, "%5d", a->geom_rate);
} else if (a && trackDataValid(&a->baro_rate_valid)) {
p = safe_snprintf(p, end, "%5d", a->baro_rate);
} else {
p = safe_snprintf(p, end, " ");
}
p = safe_snprintf(p, end, ",fpm,");
p = safe_snprintf(p, end, "ARA:,");
for (int i = 9; i <= 15; i++) p = safe_snprintf(p, end, "%u", getbit(bytes, i));
p = safe_snprintf(p, end, ",RAT:,%u", getbit(bytes, 27));
p = safe_snprintf(p, end, ",MTE:,%u", getbit(bytes, 28));
p = safe_snprintf(p, end, ",RAC:,");
for (int i = 23; i <= 26; i++) p = safe_snprintf(p, end, "%u", getbit(bytes, i));
p = safe_snprintf(p, end, ", ");
if (getbits(bytes, 23, 26)) {
char *racs[4] = { "not below", "not above", "not left ", "not right" };
for (int i = 23; i <= 26; i++) {
if (getbit(bytes, i))
p = safe_snprintf(p, end, "%s", racs[i-23]);
}
} else {
p = safe_snprintf(p, end, " ");
}
p = safe_snprintf(p, end, ", ");
// https://mode-s.org/decode/book-the_1090mhz_riddle-junzi_sun.pdf
//
// https://www.faa.gov/documentlibrary/media/advisory_circular/tcas%20ii%20v7.1%20intro%20booklet.pdf
/* RAs can be classified as positive (e.g.,
climb, descend) or negative (e.g., limit climb
to 0 fpm, limit descend to 500 fpm). The
term "Vertical Speed Limit" (VSL) is
equivalent to "negative." RAs can also be
classified as preventive or corrective,
depending on whether own aircraft is, or is
not, in conformance with the RA target
altitude rate. Corrective RAs require a
change in vertical speed; preventive RAs do
not require a change in vertical speed
*/
if (rat) {
p = safe_snprintf(p, end, "Clear of Conflict");
} else if (ara) {
p = safe_snprintf(p, end, "RA:");
bool corr = getbit(bytes, 10); // corrective / preventive
bool down = getbit(bytes, 11); // downward sense / upward sense
bool increase = getbit(bytes, 12); // increase rate
bool reversal = getbit(bytes, 13); // sense reversal
bool crossing = getbit(bytes, 14); // altitude crossing
bool positive = getbit(bytes, 15);
// positive: (Maintain climb / descent) / (Climb / descend): requires more than 1500 fpm vertical rate
// !positive: (Do not / reduce) (climb / descend)
if (corr && positive) {
if (!reversal) {
// reversal has priority and comes later
} else if (increase) {
p = safe_snprintf(p, end, " Increase");
}
if (down)
p = safe_snprintf(p, end, " Descend");
else
p = safe_snprintf(p, end, " Climb");
if (reversal) {
if (down)
p = safe_snprintf(p, end, "; Descend");
else
p = safe_snprintf(p, end, "; Climb");
p = safe_snprintf(p, end, " NOW");
}
if (crossing) {
p = safe_snprintf(p, end, "; Crossing");
if (down)
p = safe_snprintf(p, end, " Descend");
else
p = safe_snprintf(p, end, " Climb");
}
}
if (corr && !positive) {
p = safe_snprintf(p, end, " Level Off");
}
if (!corr && positive) {
p = safe_snprintf(p, end, " Maintain vertical Speed");
if (crossing) {
p = safe_snprintf(p, end, "; Crossing Maintain");
}
}
if (!corr && !positive) {
p = safe_snprintf(p, end, " Monitor vertical Speed");
}
} else if (!ara && mte) {
p = safe_snprintf(p, end, "RA multithreat:");
if (getbit(bytes, 10))
p = safe_snprintf(p, end, " correct upwards;");
if (getbit(bytes, 11))
p = safe_snprintf(p, end, " climb required;");
if (getbit(bytes, 12))
p = safe_snprintf(p, end, " correct downwards;");
if (getbit(bytes, 13))
p = safe_snprintf(p, end, " descent required;");
if (getbit(bytes, 14))
p = safe_snprintf(p, end, " crossing;");
if (getbit(bytes, 15))
p = safe_snprintf(p, end, " increase/maintain vertical rate");
else
p = safe_snprintf(p, end, " reduce/limit vertical rate");
}
int tti = getbits(bytes, 29, 30);
uint32_t threatAddr = getbits(bytes, 31, 54);
if (tti == 1)
p = safe_snprintf(p, end, "; TIDh: %06x", threatAddr);
if (debug) {
p = safe_snprintf(p, end, "; TTI: ");
for (int i = 29; i <= 30; i++) p = safe_snprintf(p, end, "%u", getbit(bytes, i));
}
p = safe_snprintf(p, end, ",");
return p;
}
char *sprintAircraftObject(char *p, char *end, struct aircraft *a, int64_t now, int printMode, struct modesMessage *mm) {
// printMode == 0: aircraft.json / globe.json / apiBuffer
// printMode == 1: trace.json
// printMode == 2: jsonPositionOutput
p = safe_snprintf(p, end, "{");
if (printMode == 2)
p = safe_snprintf(p, end, "\"now\" : %.3f,", now / 1000.0);
if (printMode != 1)
p = safe_snprintf(p, end, "\"hex\":\"%s%06x\",", (a->addr & MODES_NON_ICAO_ADDRESS) ? "~" : "", a->addr & 0xFFFFFF);
p = safe_snprintf(p, end, "\"type\":\"%s\"", addrtype_enum_string(a->addrtype));
if (trackDataValid(&a->callsign_valid)) {
char buf[128];
p = safe_snprintf(p, end, ",\"flight\":\"%s\"", jsonEscapeString(a->callsign, buf, sizeof(buf)));
}
if (printMode != 1) {
if (Modes.db) {
if (a->registration[0])
p = safe_snprintf(p, end, ",\"r\":\"%.*s\"", (int) sizeof(a->registration), a->registration);
if (a->typeCode[0])
p = safe_snprintf(p, end, ",\"t\":\"%.*s\"", (int) sizeof(a->typeCode), a->typeCode);
if (a->dbFlags) {
uint32_t dbFlags = a->dbFlags;
dbFlags &= ~(1 << 7);
p = safe_snprintf(p, end, ",\"dbFlags\":%u", dbFlags);
}
if (Modes.jsonLongtype) {
dbEntry *e = dbGet(a->addr, Modes.dbIndex);
if (e) {
if (e->typeLong[0])
p = safe_snprintf(p, end, ",\"desc\":\"%.*s\"", (int) sizeof(e->typeLong), e->typeLong);
if (e->ownOp[0])
p = safe_snprintf(p, end, ",\n\"ownOp\":\"%.*s\"", (int) sizeof(e->ownOp), e->ownOp);
if (e->year[0])
p = safe_snprintf(p, end, ",\n\"year\":\"%.*s\"", (int) sizeof(e->year), e->year);
}
}
}
if (trackDataValid(&a->airground_valid) && a->airground == AG_GROUND) {
if (0)
p = safe_snprintf(p, end, ",\"ground\":true");
else
p = safe_snprintf(p, end, ",\"alt_baro\":\"ground\"");
} else {
if (altBaroReliable(a))
p = safe_snprintf(p, end, ",\"alt_baro\":%d", a->baro_alt);
if (0)
p = safe_snprintf(p, end, ",\"ground\":false");
}
}
if (trackDataValid(&a->geom_alt_valid))
p = safe_snprintf(p, end, ",\"alt_geom\":%d", a->geom_alt);
if (printMode != 1 && trackDataValid(&a->gs_valid))
p = safe_snprintf(p, end, ",\"gs\":%.1f", a->gs);
if (trackDataValid(&a->ias_valid))
p = safe_snprintf(p, end, ",\"ias\":%u", a->ias);
if (trackDataValid(&a->tas_valid))
p = safe_snprintf(p, end, ",\"tas\":%u", a->tas);
if (trackDataValid(&a->mach_valid))
p = safe_snprintf(p, end, ",\"mach\":%.3f", a->mach);
if (now < a->wind_updated + TRACK_EXPIRE && abs(a->wind_altitude - a->baro_alt) < 500) {
p = safe_snprintf(p, end, ",\"wd\":%.0f", a->wind_direction);
p = safe_snprintf(p, end, ",\"ws\":%.0f", a->wind_speed);
}
if (now < a->oat_updated + TRACK_EXPIRE) {
p = safe_snprintf(p, end, ",\"oat\":%.0f", a->oat);
p = safe_snprintf(p, end, ",\"tat\":%.0f", a->tat);
}
if (trackDataValid(&a->track_valid)) {
p = safe_snprintf(p, end, ",\"track\":%.2f", a->track);
} else if (printMode != 1 && trackDataValid(&a->pos_reliable_valid) && !(trackDataValid(&a->airground_valid) && a->airground == AG_GROUND)) {
p = safe_snprintf(p, end, ",\"calc_track\":%.0f", a->calc_track);
}
if (trackDataValid(&a->track_rate_valid))
p = safe_snprintf(p, end, ",\"track_rate\":%.2f", a->track_rate);
if (trackDataValid(&a->roll_valid))
p = safe_snprintf(p, end, ",\"roll\":%.2f", a->roll);
if (trackDataValid(&a->mag_heading_valid))
p = safe_snprintf(p, end, ",\"mag_heading\":%.2f", a->mag_heading);
if (trackDataValid(&a->true_heading_valid))
p = safe_snprintf(p, end, ",\"true_heading\":%.2f", a->true_heading);
if (trackDataValid(&a->baro_rate_valid))
p = safe_snprintf(p, end, ",\"baro_rate\":%d", a->baro_rate);
if (trackDataValid(&a->geom_rate_valid))
p = safe_snprintf(p, end, ",\"geom_rate\":%d", a->geom_rate);
if (trackDataValid(&a->squawk_valid))
p = safe_snprintf(p, end, ",\"squawk\":\"%04x\"", a->squawk);
if (trackDataValid(&a->emergency_valid))
p = safe_snprintf(p, end, ",\"emergency\":\"%s\"", emergency_enum_string(a->emergency));
if (a->category != 0)
p = safe_snprintf(p, end, ",\"category\":\"%02X\"", a->category);
if (trackDataValid(&a->nav_qnh_valid))
p = safe_snprintf(p, end, ",\"nav_qnh\":%.1f", a->nav_qnh);
if (trackDataValid(&a->nav_altitude_mcp_valid))
p = safe_snprintf(p, end, ",\"nav_altitude_mcp\":%d", a->nav_altitude_mcp);
if (trackDataValid(&a->nav_altitude_fms_valid))
p = safe_snprintf(p, end, ",\"nav_altitude_fms\":%d", a->nav_altitude_fms);
if (trackDataValid(&a->nav_heading_valid))
p = safe_snprintf(p, end, ",\"nav_heading\":%.2f", a->nav_heading);
if (trackDataValid(&a->nav_modes_valid)) {
p = safe_snprintf(p, end, ",\"nav_modes\":[");
p = append_nav_modes(p, end, a->nav_modes, "\"", ",");
p = safe_snprintf(p, end, "]");
}
if (printMode != 1) {
if (trackDataValid(&a->pos_reliable_valid)) {
p = safe_snprintf(p, end, ",\"lat\":%f,\"lon\":%f,\"nic\":%u,\"rc\":%u,\"seen_pos\":%.3f",
a->latReliable, a->lonReliable, a->pos_nic_reliable, a->pos_rc_reliable,
(now < a->pos_reliable_valid.updated) ? 0 : ((now - a->pos_reliable_valid.updated) / 1000.0));
#if defined(TRACKS_UUID)
{
char uuid[32]; // needs 18 chars and null byte
sprint_uuid1(a->lastPosReceiverId, uuid);
p = safe_snprintf(p, end, ",\"rId\":\"%s\"", uuid);
}
#endif
#if defined(PRINT_UUIDS)
{
char uuid[32]; // needs 18 chars and null byte
p = safe_snprintf(p, end, ",\"recentReceiverIds\":[");
int64_t printNewer = now - 3 * SECONDS;
int first = 1;
for (int i = 0; i < RECENT_RECEIVER_IDS; i++) {
idTime *entry = &a->recentReceiverIds[i];
if (entry->id != 0 && entry->time > printNewer) {
if (first) {
first = 0;
} else {
p = safe_snprintf(p, end, ",");
}
sprint_uuid1(entry->id, uuid);
p = safe_snprintf(p, end, "\"%s\"", uuid);
}
}
p = safe_snprintf(p, end, "]");
}
#endif
if (Modes.userLocationValid) {
p = safe_snprintf(p, end, ",\"r_dst\":%.3f,\"r_dir\":%.1f", a->receiver_distance / 1852.0, a->receiver_direction);
}
} else {
if (now < a->rr_seen + 2 * MINUTES) {
p = safe_snprintf(p, end, ",\"rr_lat\":%.1f,\"rr_lon\":%.1f", a->rr_lat, a->rr_lon);
}
if (now < a->seenPosReliable + 14 * 24 * HOURS) {
p = safe_snprintf(p, end, ",\"lastPosition\":{\"lat\":%f,\"lon\":%f,\"nic\":%u,\"rc\":%u,\"seen_pos\":%.3f}",
a->latReliable, a->lonReliable, a->pos_nic_reliable, a->pos_rc_reliable,
(now < a->seenPosReliable) ? 0 : ((now - a->seenPosReliable) / 1000.0));
}
}
if (nogps(now, a)) {
p = safe_snprintf(p, end, ",\"gpsOkBefore\":%.1f", a->seenAdsbReliable / 1000.0);
if (a->seenAdsbLat || a->seenAdsbLon) {
p = safe_snprintf(p, end, ",\"gpsOkLat\":%f,\"gpsOkLon\":%f", a->seenAdsbLat, a->seenAdsbLon);
}
}
}
if (printMode == 1 && trackDataValid(&a->pos_reliable_valid)) {
p = safe_snprintf(p, end, ",\"nic\":%u,\"rc\":%u",
a->pos_nic_reliable, a->pos_rc_reliable);
}
if (a->adsb_version >= 0)
p = safe_snprintf(p, end, ",\"version\":%d", a->adsb_version);
if (trackDataValid(&a->nic_baro_valid))
p = safe_snprintf(p, end, ",\"nic_baro\":%u", a->nic_baro);
if (trackDataValid(&a->nac_p_valid))
p = safe_snprintf(p, end, ",\"nac_p\":%u", a->nac_p);
if (trackDataValid(&a->nac_v_valid))
p = safe_snprintf(p, end, ",\"nac_v\":%u", a->nac_v);
if (trackDataValid(&a->sil_valid))
p = safe_snprintf(p, end, ",\"sil\":%u", a->sil);
if (a->sil_type != SIL_INVALID)
p = safe_snprintf(p, end, ",\"sil_type\":\"%s\"", sil_type_enum_string(a->sil_type));
if (trackDataValid(&a->gva_valid))
p = safe_snprintf(p, end, ",\"gva\":%u", a->gva);
if (trackDataValid(&a->sda_valid))
p = safe_snprintf(p, end, ",\"sda\":%u", a->sda);
if (trackDataValid(&a->alert_valid))
p = safe_snprintf(p, end, ",\"alert\":%u", a->alert);
if (trackDataValid(&a->spi_valid))
p = safe_snprintf(p, end, ",\"spi\":%u", a->spi);
/*
if (a->pos_reliable_valid.source == SOURCE_JAERO)
p = safe_snprintf(p, end, ",\"jaero\": true");
if (a->pos_reliable_valid.source == SOURCE_SBS)
p = safe_snprintf(p, end, ",\"sbs_other\": true");
*/
if (printMode != 1) {
p = safe_snprintf(p, end, ",\"mlat\":");
p = append_flags(p, end, a, SOURCE_MLAT);
p = safe_snprintf(p, end, ",\"tisb\":");
p = append_flags(p, end, a, SOURCE_TISB);
p = safe_snprintf(p, end, ",\"messages\":%u,\"seen\":%.1f,\"rssi\":%.1f",
a->messages, (now < a->seen) ? 0 : ((now - a->seen) / 1000.0),
getSignal(a));
}
if (trackDataAge(now, &a->acas_ra_valid) < 15 * SECONDS || (mm && mm->acas_ra_valid)) {
p = safe_snprintf(p, end, ",\"acas_ra\":");
p = sprintACASJson(p, end, a->acas_ra,
(mm && mm->acas_ra_valid) ? mm : NULL,
(mm && mm->acas_ra_valid) ? now : a->acas_ra_valid.updated);
}
p = safe_snprintf(p, end, "}");
return p;
}
char *sprintAircraftRecent(char *p, char *end, struct aircraft *a, int64_t now, int printMode, struct modesMessage *mm, int64_t recent) {
if (printMode == 1) {
}
char *start = p;
p = safe_snprintf(p, end, "{");
//p = safe_snprintf(p, end, "\"now\" : %.0f,", now / 1000.0);
p = safe_snprintf(p, end, "\"hex\":\"%s%06x\",", (a->addr & MODES_NON_ICAO_ADDRESS) ? "~" : "", a->addr & 0xFFFFFF);
p = safe_snprintf(p, end, "\"type\":\"%s\"", addrtype_enum_string(a->addrtype));
char *startRecent = p;
if (recent > trackDataAge(now, &a->callsign_valid)) {
char buf[128];
p = safe_snprintf(p, end, ",\"flight\":\"%s\"", jsonEscapeString(a->callsign, buf, sizeof(buf)));
}
if (recent > trackDataAge(now, &a->airground_valid)) {
if (a->airground == AG_GROUND) {
p = safe_snprintf(p, end, ",\"ground\":true");
} else if (a->airground == AG_AIRBORNE ) {
p = safe_snprintf(p, end, ",\"ground\":false");
}
}
if (recent > trackDataAge(now, &a->baro_alt_valid))
p = safe_snprintf(p, end, ",\"alt_baro\":%d", a->baro_alt);
if (recent > trackDataAge(now, &a->geom_alt_valid))
p = safe_snprintf(p, end, ",\"alt_geom\":%d", a->geom_alt);
if (recent > trackDataAge(now, &a->gs_valid))
p = safe_snprintf(p, end, ",\"gs\":%.1f", a->gs);
if (recent > trackDataAge(now, &a->ias_valid))
p = safe_snprintf(p, end, ",\"ias\":%u", a->ias);
if (recent > trackDataAge(now, &a->tas_valid))
p = safe_snprintf(p, end, ",\"tas\":%u", a->tas);
if (recent > trackDataAge(now, &a->mach_valid))
p = safe_snprintf(p, end, ",\"mach\":%.3f", a->mach);
if (now < a->wind_updated + recent && abs(a->wind_altitude - a->baro_alt) < 500) {
p = safe_snprintf(p, end, ",\"wd\":%.0f", a->wind_direction);
p = safe_snprintf(p, end, ",\"ws\":%.0f", a->wind_speed);
}
if (now < a->oat_updated + recent) {
p = safe_snprintf(p, end, ",\"oat\":%.0f", a->oat);
p = safe_snprintf(p, end, ",\"tat\":%.0f", a->tat);
}
if (recent > trackDataAge(now, &a->track_valid))
p = safe_snprintf(p, end, ",\"track\":%.2f", a->track);
if (recent > trackDataAge(now, &a->track_rate_valid))
p = safe_snprintf(p, end, ",\"track_rate\":%.2f", a->track_rate);
if (recent > trackDataAge(now, &a->roll_valid))
p = safe_snprintf(p, end, ",\"roll\":%.2f", a->roll);
if (recent > trackDataAge(now, &a->mag_heading_valid))
p = safe_snprintf(p, end, ",\"mag_heading\":%.2f", a->mag_heading);
if (recent > trackDataAge(now, &a->true_heading_valid))
p = safe_snprintf(p, end, ",\"true_heading\":%.2f", a->true_heading);
if (recent > trackDataAge(now, &a->baro_rate_valid))
p = safe_snprintf(p, end, ",\"baro_rate\":%d", a->baro_rate);
if (recent > trackDataAge(now, &a->geom_rate_valid))
p = safe_snprintf(p, end, ",\"geom_rate\":%d", a->geom_rate);
if (recent > trackDataAge(now, &a->squawk_valid))
p = safe_snprintf(p, end, ",\"squawk\":\"%04x\"", a->squawk);
if (recent > trackDataAge(now, &a->emergency_valid))
p = safe_snprintf(p, end, ",\"emergency\":\"%s\"", emergency_enum_string(a->emergency));
if (recent > trackDataAge(now, &a->nav_qnh_valid))
p = safe_snprintf(p, end, ",\"nav_qnh\":%.1f", a->nav_qnh);
if (recent > trackDataAge(now, &a->nav_altitude_mcp_valid))
p = safe_snprintf(p, end, ",\"nav_altitude_mcp\":%d", a->nav_altitude_mcp);
if (recent > trackDataAge(now, &a->nav_altitude_fms_valid))
p = safe_snprintf(p, end, ",\"nav_altitude_fms\":%d", a->nav_altitude_fms);
if (recent > trackDataAge(now, &a->nav_heading_valid))
p = safe_snprintf(p, end, ",\"nav_heading\":%.2f", a->nav_heading);
if (recent > trackDataAge(now, &a->nav_modes_valid)) {
p = safe_snprintf(p, end, ",\"nav_modes\":[");
p = append_nav_modes(p, end, a->nav_modes, "\"", ",");
p = safe_snprintf(p, end, "]");
}
if (recent > trackDataAge(now, &a->pos_reliable_valid)) {
p = safe_snprintf(p, end, ",\"lat\":%f,\"lon\":%f,\"nic\":%u,\"rc\":%u,\"seen_pos\":%.3f",
a->latReliable, a->lonReliable, a->pos_nic_reliable, a->pos_rc_reliable,
(now < a->pos_reliable_valid.updated) ? 0 : ((now - a->pos_reliable_valid.updated) / 1000.0));
if (a->adsb_version >= 0)
p = safe_snprintf(p, end, ",\"version\":%d", a->adsb_version);
if (a->category != 0)
p = safe_snprintf(p, end, ",\"category\":\"%02X\"", a->category);
}
if (recent > trackDataAge(now, &a->nic_baro_valid))
p = safe_snprintf(p, end, ",\"nic_baro\":%u", a->nic_baro);
if (recent > trackDataAge(now, &a->nac_p_valid))
p = safe_snprintf(p, end, ",\"nac_p\":%u", a->nac_p);
if (recent > trackDataAge(now, &a->nac_v_valid))
p = safe_snprintf(p, end, ",\"nac_v\":%u", a->nac_v);
if (recent > trackDataAge(now, &a->sil_valid)) {
p = safe_snprintf(p, end, ",\"sil\":%u", a->sil);
if (a->sil_type != SIL_INVALID)
p = safe_snprintf(p, end, ",\"sil_type\":\"%s\"", sil_type_enum_string(a->sil_type));
}
if (recent > trackDataAge(now, &a->gva_valid))
p = safe_snprintf(p, end, ",\"gva\":%u", a->gva);
if (recent > trackDataAge(now, &a->sda_valid))
p = safe_snprintf(p, end, ",\"sda\":%u", a->sda);
if (recent > trackDataAge(now, &a->alert_valid))
p = safe_snprintf(p, end, ",\"alert\":%u", a->alert);
if (recent > trackDataAge(now, &a->spi_valid))
p = safe_snprintf(p, end, ",\"spi\":%u", a->spi);
// nothing recent, print nothing
if (startRecent == p) {
return start;
}
/*
p = safe_snprintf(p, end, ",\"mlat\":");
p = append_flags(p, end, a, SOURCE_MLAT);
p = safe_snprintf(p, end, ",\"tisb\":");
p = append_flags(p, end, a, SOURCE_TISB);
p = safe_snprintf(p, end, ",\"messages\":%u,\"seen\":%.1f,\"rssi\":%.1f",
a->messages, (now < a->seen) ? 0 : ((now - a->seen) / 1000.0),
10 * log10((a->signalLevel[0] + a->signalLevel[1] + a->signalLevel[2] + a->signalLevel[3] +
a->signalLevel[4] + a->signalLevel[5] + a->signalLevel[6] + a->signalLevel[7]) / 8 + 1.125e-5));
*/
if (trackDataAge(now, &a->acas_ra_valid) < recent) {
p = safe_snprintf(p, end, ",\"acas_ra_timestamp\":%.2f", now / 1000.0);
if (mm && mm->acas_ra_valid)
p = safe_snprintf(p, end, ",\"acas_ra_df_type\":%d", mm->msgtype);
p = safe_snprintf(p, end, ",\"acas_ra_mv_mb_bytes_hex\":\"");
for (int i = 0; i < 7; ++i) {
p = safe_snprintf(p, end, "%02X", (unsigned) a->acas_ra[i]);
}
p = safe_snprintf(p, end, "\"");
p = safe_snprintf(p, end, ",\"acas_ra_csvline\":\"");
p = sprintACASInfoShort(p, end, a->addr, a->acas_ra, a, (mm && mm->acas_ra_valid) ? mm : NULL, a->acas_ra_valid.updated);
p = safe_snprintf(p, end, "\"");
}
p = safe_snprintf(p, end, "}");
return p;
}
int includeAircraftJson(int64_t now, struct aircraft *a) {
if (unlikely(a == NULL)) {
fprintf(stderr, "includeAircraftJson: got NULL pointer\n");
return 0;
}
// include all aircraft with valid position
if (a->pos_reliable_valid.source != SOURCE_INVALID) {
return 1;