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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 by the GPSD project
BSD terms apply: see the file COPYING in the distribution root for details.
***************************************************************************/
#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,
/*@null@*/ 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)
/*@ -fullinitblock @*/
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
/*@-type@*//* STRUCTARRAY confuses splint */
#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
/*@+type@*/
/*@-type@*//* STRUCTARRAY confuses splint */
#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
/*@+type@*/
/*@-type@*//* STRUCTARRAY confuses splint */
#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
/*@+type@*/
/*@-type@*//* STRUCTARRAY confuses splint */
#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
/*@+type@*/
/*@-type@*//* STRUCTARRAY confuses splint */
#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
/*@+type@*/
/*@-type@*//* STRUCTARRAY confuses splint */
#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
/*@+type@*/
/*@-type@*//* STRUCTARRAY confuses splint */
#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
/*@+type@*/
/*@-type@*//* STRUCTARRAY confuses splint */
#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
/*@+type@*/
/*@-type@*//* complex union array initislizations confuses splint */
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},
};
/*@+type@*/
/*@ +fullinitblock @*/
#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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