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|
/*
* This file is Copyright (c) 2010 by the GPSD project
* BSD terms apply: see the file COPYING in the distribution root for details.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <stdarg.h>
#ifndef S_SPLINT_S
#include <unistd.h>
#endif /* S_SPLINT_S */
#include "gpsd.h"
#include "gps_json.h"
static int verbose = 0;
static bool scaled = true;
static bool json = true;
static unsigned int ntypes = 0;
static unsigned int typelist[32];
/**************************************************************************
*
* Generic machinery
*
**************************************************************************/
void gpsd_report(int errlevel, const char *fmt, ...)
/* assemble command in printf(3) style, use stderr or syslog */
{
if (errlevel <= verbose) {
char buf[BUFSIZ];
va_list ap;
(void)strlcpy(buf, "gpsdecode: ", BUFSIZ);
va_start(ap, fmt);
(void)vsnprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), fmt,
ap);
va_end(ap);
(void)fputs(buf, stderr);
}
}
#ifdef AIVDM_ENABLE
static void aivdm_csv_dump(struct ais_t *ais, char *buf, size_t buflen)
{
(void)snprintf(buf, buflen, "%u|%u|%09u|", ais->type, ais->repeat,
ais->mmsi);
/*@ -formatcode @*/
switch (ais->type) {
case 1: /* Position Report */
case 2:
case 3:
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%d|%u|%u|%d|%d|%u|%u|%u|0x%x|%u|0x%x",
ais->type1.status,
ais->type1.turn,
ais->type1.speed,
(uint) ais->type1.accuracy,
ais->type1.lon,
ais->type1.lat,
ais->type1.course,
ais->type1.heading,
ais->type1.second,
ais->type1.maneuver,
(uint) ais->type1.raim, ais->type1.radio);
break;
case 4: /* Base Station Report */
case 11: /* UTC/Date Response */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%04u-%02u-%02uT%02u:%02u:%02uZ|%u|%d|%d|%u|%u|0x%x",
ais->type4.year,
ais->type4.month,
ais->type4.day,
ais->type4.hour,
ais->type4.minute,
ais->type4.second,
(uint) ais->type4.accuracy,
ais->type4.lon,
ais->type4.lat,
ais->type4.epfd,
(uint) ais->type4.raim, ais->type4.radio);
break;
case 5: /* Ship static and voyage related data */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%s|%s|%u|%u|%u|%u|%u|%u|%02u-%02uT%02u:%02uZ|%u|%s|%u",
ais->type5.imo,
ais->type5.ais_version,
ais->type5.callsign,
ais->type5.shipname,
ais->type5.shiptype,
ais->type5.to_bow,
ais->type5.to_stern,
ais->type5.to_port,
ais->type5.to_starboard,
ais->type5.epfd,
ais->type5.month,
ais->type5.day,
ais->type5.hour,
ais->type5.minute,
ais->type5.draught,
ais->type5.destination, ais->type5.dte);
break;
case 6: /* Binary Message */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u|%u|%zd:%s",
ais->type6.seqno,
ais->type6.dest_mmsi,
(uint) ais->type6.retransmit,
ais->type6.dac,
ais->type6.fid,
ais->type6.bitcount,
gpsd_hexdump(ais->type6.bitdata,
(ais->type6.bitcount + 7) / 8));
break;
case 7: /* Binary Acknowledge */
case 13: /* Safety Related Acknowledge */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u",
ais->type7.mmsi1,
ais->type7.mmsi2, ais->type7.mmsi3, ais->type7.mmsi4);
break;
case 8: /* Binary Broadcast Message */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%zd:%s",
ais->type8.dac,
ais->type8.fid,
ais->type8.bitcount,
gpsd_hexdump(ais->type8.bitdata,
(ais->type8.bitcount + 7) / 8));
break;
case 9:
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%d|%d|%u|%u|0x%x|%u|%u|0x%x",
ais->type9.alt,
ais->type9.speed,
(uint) ais->type9.accuracy,
ais->type9.lon,
ais->type9.lat,
ais->type9.course,
ais->type9.second,
ais->type9.regional,
ais->type9.dte,
(uint) ais->type9.raim, ais->type9.radio);
break;
case 10: /* UTC/Date Inquiry */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u", ais->type10.dest_mmsi);
break;
case 12: /* Safety Related Message */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%s",
ais->type12.seqno,
ais->type12.dest_mmsi,
(uint) ais->type12.retransmit, ais->type12.text);
break;
case 14: /* Safety Related Broadcast Message */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%s", ais->type14.text);
break;
case 15:
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u|%u|%u|%u|%u",
ais->type15.mmsi1,
ais->type15.type1_1,
ais->type15.offset1_1,
ais->type15.type1_2,
ais->type15.offset1_2,
ais->type15.mmsi2,
ais->type15.type2_1, ais->type15.offset2_1);
break;
case 16:
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u|%u|%u",
ais->type16.mmsi1,
ais->type16.offset1,
ais->type16.increment1,
ais->type16.mmsi2,
ais->type16.offset2, ais->type16.increment2);
break;
case 17:
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%d|%d|%zd:%s",
ais->type17.lon,
ais->type17.lat,
ais->type17.bitcount,
gpsd_hexdump(ais->type17.bitdata,
(ais->type17.bitcount + 7) / 8));
break;
case 18:
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%d|%d|%u|%u|%u|0x%x|%u|%u|%u|%u|%u|%u|0x%x",
ais->type18.reserved,
ais->type18.speed,
(uint) ais->type18.accuracy,
ais->type18.lon,
ais->type18.lat,
ais->type18.course,
ais->type18.heading,
ais->type18.second,
ais->type18.regional,
(uint) ais->type18.cs,
(uint) ais->type18.display,
(uint) ais->type18.dsc,
(uint) ais->type18.band,
(uint) ais->type18.msg22,
(uint) ais->type18.raim, ais->type18.radio);
break;
case 19:
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%d|%d|%u|%u|%u|0x%x|%s|%u|%u|%u|%u|%u|%u|%u|%u|%u",
ais->type19.reserved,
ais->type19.speed,
(uint) ais->type19.accuracy,
ais->type19.lon,
ais->type19.lat,
ais->type19.course,
ais->type19.heading,
ais->type19.second,
ais->type19.regional,
ais->type19.shipname,
ais->type19.shiptype,
ais->type19.to_bow,
ais->type19.to_stern,
ais->type19.to_port,
ais->type19.to_starboard,
ais->type19.epfd,
(uint) ais->type19.raim,
ais->type19.dte, (uint) ais->type19.assigned);
break;
case 20: /* Data Link Management Message */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u|%u|%u|%u|%u|%u|%u|%u|%u|%u|%u|%u|%u",
ais->type20.offset1,
ais->type20.number1,
ais->type20.timeout1,
ais->type20.increment1,
ais->type20.offset2,
ais->type20.number2,
ais->type20.timeout2,
ais->type20.increment2,
ais->type20.offset3,
ais->type20.number3,
ais->type20.timeout3,
ais->type20.increment3,
ais->type20.offset4,
ais->type20.number4,
ais->type20.timeout4, ais->type20.increment4);
break;
case 21: /* Aid to Navigation */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%s|%u|%d|%d|%u|%u|%u|%u|%u|%u|%u|0x%x|%u|%u",
ais->type21.aid_type,
ais->type21.name,
(uint) ais->type21.accuracy,
ais->type21.lon,
ais->type21.lat,
ais->type21.to_bow,
ais->type21.to_stern,
ais->type21.to_port,
ais->type21.to_starboard,
ais->type21.epfd,
ais->type21.second,
ais->type21.regional,
(uint) ais->type21.off_position,
(uint) ais->type21.raim,
(uint) ais->type21.virtual_aid);
break;
case 22: /* Channel Management */
if (!ais->type22.addressed)
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u|%d|%d|%d|%d|%u|%u|%u|%u",
ais->type22.channel_a,
ais->type22.channel_b,
ais->type22.txrx,
(uint) ais->type22.power,
ais->type22.area.ne_lon,
ais->type22.area.ne_lat,
ais->type22.area.sw_lon,
ais->type22.area.sw_lat,
(uint) ais->type22.addressed,
(uint) ais->type22.band_a,
(uint) ais->type22.band_b, ais->type22.zonesize);
else
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u|%u|%u|%u|%u|%u|%u",
ais->type22.channel_a,
ais->type22.channel_b,
ais->type22.txrx,
(uint) ais->type22.power,
ais->type22.mmsi.dest1,
ais->type22.mmsi.dest2,
(uint) ais->type22.addressed,
(uint) ais->type22.band_a,
(uint) ais->type22.band_b, ais->type22.zonesize);
break;
case 23: /* Group Management Command */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%d|%d|%d|%d|%u|%u|%u|%u|%u",
ais->type23.ne_lon,
ais->type23.ne_lat,
ais->type23.sw_lon,
ais->type23.sw_lat,
ais->type23.stationtype,
ais->type23.shiptype,
ais->type23.txrx,
ais->type23.interval, ais->type23.quiet);
break;
case 24: /* Class B CS Static Data Report */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%s|", ais->type24.shipname);
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|", ais->type24.shiptype);
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%s|%s|", ais->type24.vendorid, ais->type24.callsign);
if (AIS_AUXILIARY_MMSI(ais->mmsi)) {
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u", ais->type24.mothership_mmsi);
} else {
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u",
ais->type24.dim.to_bow,
ais->type24.dim.to_stern,
ais->type24.dim.to_port,
ais->type24.dim.to_starboard);
}
break;
case 25: /* Binary Message, Single Slot */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u|%zd:%s\r\n",
(uint) ais->type25.addressed,
(uint) ais->type25.structured,
ais->type25.dest_mmsi,
ais->type25.app_id,
ais->type25.bitcount,
gpsd_hexdump(ais->type25.bitdata,
(ais->type25.bitcount + 7) / 8));
break;
case 26: /* Binary Message, Multiple Slot */
(void)snprintf(buf + strlen(buf), buflen - strlen(buf),
"%u|%u|%u|%u|%zd:%s:%u\r\n",
(uint) ais->type26.addressed,
(uint) ais->type26.structured,
ais->type26.dest_mmsi,
ais->type26.app_id,
ais->type26.bitcount,
gpsd_hexdump(ais->type26.bitdata,
(ais->type26.bitcount + 7) / 8),
ais->type26.radio);
break;
default:
(void)snprintf(buf + strlen(buf),
buflen - strlen(buf),
"unknown AIVDM message content.");
break;
}
/*@ +formatcode @*/
(void)strlcat(buf, "\r\n", buflen);
}
#endif
static bool filter(gps_mask_t changed, struct gps_device_t *session)
/* say whether a given message should be visible */
{
if (ntypes == 0)
return true;
else {
unsigned int i, t;
if ((changed & AIS_SET)!=0)
t = session->gpsdata.ais.type;
else if ((changed & RTCM2_SET)!=0)
t = session->gpsdata.rtcm2.type;
else if ((changed & RTCM3_SET)!=0)
t = session->gpsdata.rtcm3.type;
else
return true;
for (i = 0; i < ntypes; i++)
if (t == typelist[i])
return true;
}
return false;
}
/*@ -compdestroy -compdef -usedef -uniondef @*/
static void decode(FILE *fpin, FILE*fpout)
/* sensor data on fpin to dump format on fpout */
{
struct gps_device_t session;
struct gps_context_t context;
struct policy_t policy;
char buf[GPS_JSON_RESPONSE_MAX * 4];
//This looks like a good idea, but it breaks regression tests
//(void)strlcpy(session.gpsdata.dev.path, "stdin", sizeof(session.gpsdata.dev.path));
memset(&policy, '\0', sizeof(policy));
policy.json = json;
gps_context_init(&context);
gpsd_time_init(&context, time(NULL));
context.readonly = true;
gpsd_init(&session, &context, NULL);
gpsd_clear(&session);
session.gpsdata.gps_fd = fileno(fpin);
session.gpsdata.dev.baudrate = 38400; /* hack to enable subframes */
(void)strlcpy(session.gpsdata.dev.path,
"stdin",
sizeof(session.gpsdata.dev.path));
for (;;)
{
gps_mask_t changed = gpsd_poll(&session);
if (changed == ERROR_SET || changed == NODATA_IS)
break;
if (session.packet.type == COMMENT_PACKET)
gpsd_set_century(&session);
if (verbose >= 1 && TEXTUAL_PACKET_TYPE(session.packet.type))
(void)fputs((char *)session.packet.outbuffer, fpout);
if ((changed & (REPORT_IS|SUBFRAME_SET|AIS_SET|RTCM2_SET|RTCM3_SET|PASSTHROUGH_IS)) == 0)
continue;
if (!filter(changed, &session))
continue;
else if (json) {
if ((changed & PASSTHROUGH_IS) != 0) {
(void)fputs((char *)session.packet.outbuffer, fpout);
(void)fputs("\n", fpout);
}
#ifdef SOCKET_EXPORT_ENABLE
else
json_data_report(changed,
&session, &policy,
buf, sizeof(buf));
#endif /* SOCKET_EXPORT_ENABLE */
(void)fputs(buf, fpout);
#ifdef AIVDM_ENABLE
} else if (session.packet.type == AIVDM_PACKET) {
if ((changed & AIS_SET)!=0) {
aivdm_csv_dump(&session.gpsdata.ais, buf, sizeof(buf));
(void)fputs(buf, fpout);
}
#endif /* AIVDM_ENABLE */
}
}
}
#ifdef SOCKET_EXPORT_ENABLE
static void encode(FILE *fpin, FILE *fpout)
/* JSON format on fpin to JSON on fpout - idempotency test */
{
char inbuf[BUFSIZ];
struct policy_t policy;
struct gps_device_t session;
int lineno = 0;
memset(&policy, '\0', sizeof(policy));
memset(&session, '\0', sizeof(session));
(void)strlcpy(session.gpsdata.dev.path,
"stdin",
sizeof(session.gpsdata.dev.path));
policy.json = true;
while (fgets(inbuf, (int)sizeof(inbuf), fpin) != NULL) {
int status;
++lineno;
if (inbuf[0] == '#')
continue;
status = libgps_json_unpack(inbuf, &session.gpsdata, NULL);
if (status != 0) {
(void)fprintf(stderr,
"gpsdecode: dying with status %d (%s) on line %d\n",
status, json_error_string(status), lineno);
exit(1);
}
json_data_report(session.gpsdata.set,
&session, &policy,
inbuf, sizeof(inbuf));
(void)fputs(inbuf, fpout);
}
}
/*@ +compdestroy +compdef +usedef @*/
#endif /* SOCKET_EXPORT_ENABLE */
int main(int argc, char **argv)
{
int c;
enum
{ doencode, dodecode } mode = dodecode;
while ((c = getopt(argc, argv, "cdejpt:uvVD:")) != EOF) {
switch (c) {
case 'c':
json = false;
break;
case 'd':
mode = dodecode;
break;
case 'e':
mode = doencode;
break;
case 'j':
json = true;
break;
case 't':
/*@-nullpass@*/
typelist[ntypes++] = (unsigned int)atoi(strtok(optarg, ","));
for(;;) {
char *next = strtok(NULL, ",");
if (next == NULL)
break;
typelist[ntypes++] = (unsigned int)atoi(next);
}
/*@+nullpass@*/
break;
case 'u':
scaled = false;
break;
case 'v':
verbose = 1;
break;
case 'D':
verbose = atoi(optarg);
#if defined(CLIENTDEBUG_ENABLE) && defined(SOCKET_EXPORT_ENABLE)
json_enable_debug(verbose - 2, stderr);
#endif
break;
case 'V':
(void)fprintf(stderr, "gpsdecode revision " VERSION "\n");
exit(0);
case '?':
default:
(void)fputs("gpsdecode [-v]\n", stderr);
exit(1);
}
}
//argc -= optind;
//argv += optind;
if (mode == doencode) {
#ifdef SOCKET_EXPORT_ENABLE
encode(stdin, stdout);
#else
(void)fprintf(stderr, "gpsdecode: encoding support isn't compiled.\n");
exit(1);
#endif /* SOCKET_EXPORT_ENABLE */
} else
decode(stdin, stdout);
exit(0);
}
/* gpsdecode.c ends here */
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