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/****************************************************************************
NAME
rtcm3_json.c - deserialize RTCM3 JSON
DESCRIPTION
This module uses the generic JSON parser to get data from RTCM3
representations to libgps structures.
PERMISSIONS
This file is Copyright (c) 2013-2018 by the GPSD project
SPDX-License-Identifier: BSD-2-clause
***************************************************************************/
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <stddef.h>
#include "gpsd.h"
#ifdef SOCKET_EXPORT_ENABLE
#include "gps_json.h"
int json_rtcm3_read(const char *buf,
char *path, size_t pathlen, struct rtcm3_t *rtcm3,
const char **endptr)
{
static char *stringptrs[NITEMS(rtcm3->rtcmtypes.data)];
static char stringstore[sizeof(rtcm3->rtcmtypes.data) * 2];
static int stringcount;
/* *INDENT-OFF* */
#define RTCM3_HEADER \
{"class", t_check, .dflt.check = "RTCM3"}, \
{"type", t_uinteger, .addr.uinteger = &rtcm3->type}, \
{"device", t_string, .addr.string = path, .len = pathlen}, \
{"length", t_uinteger, .addr.uinteger = &rtcm3->length},
int status = 0, satcount = 0;
#define RTCM3FIELD(type, fld) STRUCTOBJECT(struct rtcm3_ ## type ## _t, fld)
const struct json_attr_t rtcm1001_satellite[] = {
{"ident", t_uinteger, RTCM3FIELD(1001, ident)},
{"ind", t_uinteger, RTCM3FIELD(1001, L1.indicator)},
{"prange", t_real, RTCM3FIELD(1001, L1.pseudorange)},
{"delta", t_real, RTCM3FIELD(1001, L1.rangediff)},
{"lockt", t_uinteger, RTCM3FIELD(1001, L1.locktime)},
{NULL},
};
const struct json_attr_t rtcm1002_satellite[] = {
{"ident", t_uinteger, RTCM3FIELD(1002, ident)},
{"ind", t_uinteger, RTCM3FIELD(1002, L1.indicator)},
{"prange", t_real, RTCM3FIELD(1002, L1.pseudorange)},
{"delta", t_real, RTCM3FIELD(1002, L1.rangediff)},
{"lockt", t_uinteger, RTCM3FIELD(1002, L1.locktime)},
{"amb", t_uinteger, RTCM3FIELD(1002, L1.ambiguity)},
{"CNR", t_real, RTCM3FIELD(1002, L1.CNR)},
{NULL},
};
const struct json_attr_t rtcm1009_satellite[] = {
{"ident", t_uinteger, RTCM3FIELD(1009, ident)},
{"ind", t_uinteger, RTCM3FIELD(1009, L1.indicator)},
{"channel", t_uinteger, RTCM3FIELD(1009, L1.channel)},
{"prange", t_real, RTCM3FIELD(1009, L1.pseudorange)},
{"delta", t_real, RTCM3FIELD(1009, L1.rangediff)},
{"lockt", t_uinteger, RTCM3FIELD(1009, L1.locktime)},
{NULL},
};
const struct json_attr_t rtcm1010_satellite[] = {
{"ident", t_uinteger, RTCM3FIELD(1010, ident)},
{"ind", t_uinteger, RTCM3FIELD(1010, L1.indicator)},
{"channel", t_uinteger, RTCM3FIELD(1010, L1.channel)},
{"prange", t_real, RTCM3FIELD(1010, L1.pseudorange)},
{"delta", t_real, RTCM3FIELD(1010, L1.rangediff)},
{"lockt", t_uinteger, RTCM3FIELD(1010, L1.locktime)},
{"amb", t_uinteger, RTCM3FIELD(1010, L1.ambiguity)},
{"CNR", t_real, RTCM3FIELD(1010, L1.CNR)},
{NULL},
};
#undef RTCM3FIELD
#define R1001 &rtcm3->rtcmtypes.rtcm3_1001.header
const struct json_attr_t json_rtcm1001[] = {
RTCM3_HEADER
{"station_id", t_uinteger, .addr.uinteger = R1001.station_id},
{"tow", t_uinteger, .addr.uinteger = (unsigned int *)R1001.tow},
{"sync", t_boolean, .addr.boolean = R1001.sync},
{"smoothing", t_boolean, .addr.boolean = R1001.smoothing},
{"interval", t_uinteger, .addr.uinteger = R1001.interval},
{"satellites", t_array, STRUCTARRAY(rtcm3->rtcmtypes.rtcm3_1001.rtk_data,
rtcm1001_satellite, &satcount)},
{NULL},
};
#undef R1001
#define R1002 &rtcm3->rtcmtypes.rtcm3_1002.header
const struct json_attr_t json_rtcm1002[] = {
RTCM3_HEADER
{"station_id", t_uinteger, .addr.uinteger = R1002.station_id},
{"tow", t_uinteger, .addr.uinteger = (unsigned int *)R1002.tow},
{"sync", t_boolean, .addr.boolean = R1002.sync},
{"smoothing", t_boolean, .addr.boolean = R1002.smoothing},
{"interval", t_uinteger, .addr.uinteger = R1002.interval},
{"satellites", t_array, STRUCTARRAY(rtcm3->rtcmtypes.rtcm3_1002.rtk_data,
rtcm1002_satellite, &satcount)},
{NULL},
};
#undef R1002
#define R1007 rtcm3->rtcmtypes.rtcm3_1007
const struct json_attr_t json_rtcm1007[] = {
RTCM3_HEADER
{"station_id", t_uinteger, .addr.uinteger = &R1007.station_id},
{"desc", t_string, .addr.string = R1007.descriptor,
.len = sizeof(R1007.descriptor)},
{"setup_id", t_uinteger, .addr.uinteger = &R1007.setup_id},
{NULL},
};
#undef R1002
#define R1008 rtcm3->rtcmtypes.rtcm3_1008
const struct json_attr_t json_rtcm1008[] = {
RTCM3_HEADER
{"station_id", t_uinteger, .addr.uinteger = &R1008.station_id},
{"desc", t_string, .addr.string = R1008.descriptor,
.len = sizeof(R1008.descriptor)},
{"setup_id", t_uinteger, .addr.uinteger = &R1008.setup_id},
{"serial", t_string, .addr.string = R1008.serial,
.len = sizeof(R1008.serial)},
{NULL},
};
#undef R1008
#define R1009 &rtcm3->rtcmtypes.rtcm3_1009.header
const struct json_attr_t json_rtcm1009[] = {
RTCM3_HEADER
{"station_id", t_uinteger, .addr.uinteger = R1009.station_id},
{"tow", t_uinteger, .addr.uinteger = (unsigned int *)R1009.tow},
{"sync", t_boolean, .addr.boolean = R1009.sync},
{"smoothing", t_boolean, .addr.boolean = R1009.smoothing},
{"interval", t_uinteger, .addr.uinteger = R1009.interval},
{"satellites", t_array, STRUCTARRAY(rtcm3->rtcmtypes.rtcm3_1009.rtk_data,
rtcm1009_satellite, &satcount)},
{NULL},
};
#undef R1010
#define R1010 &rtcm3->rtcmtypes.rtcm3_1010.header
const struct json_attr_t json_rtcm1010[] = {
RTCM3_HEADER
{"station_id", t_uinteger, .addr.uinteger = R1010.station_id},
{"tow", t_uinteger, .addr.uinteger = (unsigned int *)R1010.tow},
{"sync", t_boolean, .addr.boolean = R1010.sync},
{"smoothing", t_boolean, .addr.boolean = R1010.smoothing},
{"interval", t_uinteger, .addr.uinteger = R1010.interval},
{"satellites", t_array, STRUCTARRAY(rtcm3->rtcmtypes.rtcm3_1010.rtk_data,
rtcm1010_satellite, &satcount)},
{NULL},
};
#undef R1010
#define R1014 &rtcm3->rtcmtypes.rtcm3_1014
const struct json_attr_t json_rtcm1014[] = {
RTCM3_HEADER
{"netid", t_uinteger, .addr.uinteger = R1014.network_id},
{"subnetid", t_uinteger, .addr.uinteger = R1014.subnetwork_id},
{"statcount", t_uinteger, .addr.uinteger = R1014.stationcount},
{"master", t_uinteger, .addr.uinteger = R1014.master_id},
{"aux", t_uinteger, .addr.uinteger = R1014.aux_id},
{"lat", t_real, .addr.real = R1014.d_lat},
{"lon", t_real, .addr.real = R1014.d_lon},
{"alt", t_real, .addr.real = R1014.d_alt},
{NULL},
};
#undef R1014
#define R1033 rtcm3->rtcmtypes.rtcm3_1033
const struct json_attr_t json_rtcm1033[] = {
RTCM3_HEADER
{"station_id", t_uinteger, .addr.uinteger = &R1033.station_id},
{"desc", t_string, .addr.string = R1033.descriptor,
.len = sizeof(R1033.descriptor)},
{"setup_id", t_uinteger, .addr.uinteger = &R1033.setup_id},
{"serial", t_string, .addr.string = R1033.serial,
.len = sizeof(R1033.serial)},
{"receiver", t_string, .addr.string = R1033.receiver,
.len = sizeof(R1033.receiver)},
{"firmware", t_string, .addr.string = R1033.firmware,
.len = sizeof(R1033.firmware)},
{NULL},
};
#undef R1033
const struct json_attr_t json_rtcm3_fallback[] = {
RTCM3_HEADER
{"data", t_array, .addr.array.element_type = t_string,
.addr.array.arr.strings.ptrs = stringptrs,
.addr.array.arr.strings.store = stringstore,
.addr.array.arr.strings.storelen = sizeof(stringstore),
.addr.array.count = &stringcount,
.addr.array.maxlen = NITEMS(stringptrs)},
{NULL},
};
#undef RTCM3_HEADER
/* *INDENT-ON* */
memset(rtcm3, '\0', sizeof(struct rtcm3_t));
if (strstr(buf, "\"type\":1001,") != NULL) {
status = json_read_object(buf, json_rtcm1001, endptr);
if (status == 0)
rtcm3->rtcmtypes.rtcm3_1001.header.satcount = (unsigned short)satcount;
} else if (strstr(buf, "\"type\":1002,") != NULL) {
status = json_read_object(buf, json_rtcm1002, endptr);
if (status == 0)
rtcm3->rtcmtypes.rtcm3_1002.header.satcount = (unsigned short)satcount;
} else if (strstr(buf, "\"type\":1007,") != NULL) {
status = json_read_object(buf, json_rtcm1007, endptr);
} else if (strstr(buf, "\"type\":1008,") != NULL) {
status = json_read_object(buf, json_rtcm1008, endptr);
} else if (strstr(buf, "\"type\":1009,") != NULL) {
status = json_read_object(buf, json_rtcm1009, endptr);
} else if (strstr(buf, "\"type\":1010,") != NULL) {
status = json_read_object(buf, json_rtcm1010, endptr);
} else if (strstr(buf, "\"type\":1014,") != NULL) {
status = json_read_object(buf, json_rtcm1014, endptr);
} else if (strstr(buf, "\"type\":1033,") != NULL) {
status = json_read_object(buf, json_rtcm1033, endptr);
} else {
int n;
status = json_read_object(buf, json_rtcm3_fallback, endptr);
for (n = 0; n < NITEMS(rtcm3->rtcmtypes.data); n++) {
if (n >= stringcount) {
rtcm3->rtcmtypes.data[n] = '\0';
} else {
unsigned int u;
int fldcount = sscanf(stringptrs[n], "0x%02x\n", &u);
if (fldcount != 1)
return JSON_ERR_MISC;
else
rtcm3->rtcmtypes.data[n] = (char)u;
}
}
}
return status;
}
#endif /* SOCKET_EXPORT_ENABLE */
/* rtcm3_json.c ends here */
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