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recorder.c
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recorder.c
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/*
* OwnTracks Recorder
* Copyright (C) 2015-2020 Jan-Piet Mens <[email protected]>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#if WITH_MQTT
# include <mosquitto.h>
#endif
#include <getopt.h>
#include <time.h>
#include <math.h>
#include "json.h"
#include <sys/utsname.h>
#include <regex.h>
#include "recorder.h"
#include "udata.h"
#include "utstring.h"
#include "geo.h"
#include "geohash.h"
#include "base64.h"
#include "misc.h"
#include "util.h"
#include "storage.h"
#include "fences.h"
#include "gcache.h"
#ifdef WITH_HTTP
# include "http.h"
#endif
#ifdef WITH_LUA
# include "hooks.h"
#endif
#if WITH_ENCRYPT
# include <sodium.h>
#endif
#include "version.h"
#define SSL_VERIFY_PEER (1)
#define SSL_VERIFY_NONE (0)
#define TOPIC_PARTS (4) /* owntracks/user/device/info */
#define DEFAULT_QOS (2)
#define CLEAN_SESSION false
#define GWNUMBERSMAX 50 /* number of batt,ext,status in array */
static int run = 1;
static const char *ltime(time_t t) {
static char buf[] = "HH:MM:SS";
strftime(buf, sizeof(buf), "%T", localtime(&t));
return(buf);
}
/*
* Process info/ message containing a CARD. If the payload is a card, return TRUE.
*/
int do_info(void *userdata, UT_string *username, UT_string *device, JsonNode *json)
{
struct udata *ud = (struct udata *)userdata;
JsonNode *j;
static UT_string *name = NULL, *face = NULL;
FILE *fp;
char *img;
int rc = FALSE;
size_t imglen;
utstring_renew(name);
utstring_renew(face);
/* I know the payload is valid JSON: write card */
if ((fp = pathn("wb", "cards", username, device, "json", time(0))) != NULL) {
char *js = json_stringify(json, NULL);
if (js) {
fprintf(fp, "%s\n", js);
free(js);
}
fclose(fp);
}
rc = TRUE;
if ((j = json_find_member(json, "name")) != NULL) {
if (j->tag == JSON_STRING) {
// printf("I got: [%s]\n", j->string_);
utstring_printf(name, "%s", j->string_);
}
}
if ((j = json_find_member(json, "face")) != NULL) {
if (j->tag == JSON_STRING) {
// printf("I got: [%s]\n", j->string_);
utstring_printf(face, "%s", j->string_);
}
}
if (ud->verbose) {
printf("* CARD: %s-%s %s\n", UB(username), UB(device), UB(name));
}
/* We have a base64-encoded "face". Decode it and store binary image */
if ((img = base64_decode(UB(face), &imglen)) != NULL) {
if ((fp = pathn("wb", "photos", username, device, "png", time(0))) != NULL) {
fwrite(img, sizeof(char), imglen, fp);
fclose(fp);
}
free(img);
}
return (rc);
}
#ifdef WITH_MQTT
void republish(struct mosquitto *mosq, struct udata *userdata, char *username, char *topic, double lat, double lon, char *cc, char *addr, long tst, char *t)
{
struct udata *ud = (struct udata *)userdata;
JsonNode *json;
static UT_string *newtopic = NULL;
char *payload;
if (ud->pubprefix == NULL)
return;
if ((json = json_mkobject()) == NULL) {
return;
}
utstring_renew(newtopic);
utstring_printf(newtopic, "%s/%s", ud->pubprefix, topic);
json_append_member(json, "username", json_mkstring(username));
json_append_member(json, "topic", json_mkstring(topic));
json_append_member(json, "cc", json_mkstring(cc));
json_append_member(json, "addr", json_mkstring(addr));
json_append_member(json, "t", json_mkstring(t));
json_append_member(json, "tst", json_mknumber(tst));
json_append_member(json, "lat", json_mknumber(lat));
json_append_member(json, "lon", json_mknumber(lon));
if ((payload = json_stringify(json, NULL)) != NULL) {
mosquitto_publish(mosq, NULL, UB(newtopic),
strlen(payload), payload, 1, true);
fprintf(stderr, "%s %s\n", UB(newtopic), payload);
free(payload);
}
json_delete(json);
}
#endif /* WITH_MQTT */
/*
* Quickly check wheterh the payload looks like
* Greenwich CSV with a regex. We could use this
* to split out the fields, instead of reverting
* to sscanf
*/
// TID , TST , T , LAT , LON , COG , VEL , ALT , DIST , TRIP
#define CSV_RE "^([[:alnum:]]+),([[:xdigit:]]+),[[:alnum:]],-?[[:digit:]]+,-?[[:digit:]]+,[[:digit:]]+,[[:digit:]]+,[[:digit:]]+,[[:digit:]]+,[[:digit:]]+$"
static int csv_looks_sane(char *payload)
{
static int virgin = 1;
static regex_t regex;
int nomatch;
int cflags = REG_EXTENDED | REG_ICASE | REG_NOSUB;
if (virgin) {
virgin = !virgin;
if (regcomp(®ex, CSV_RE, cflags)) {
olog(LOG_ERR, "Cannot compile CSV RE");
return (FALSE);
}
}
nomatch = regexec(®ex, payload, 0, NULL, 0);
return (nomatch ? FALSE : TRUE);
}
/*
* Decode OwnTracks CSV (Greenwich) and return a new JSON object
* of _type = location.
* #define CSV "X0,542A46AA,k,30365854,7575769,26,4,7,5,872"
*/
#define MILL 1000000.0
JsonNode *csv_to_json(char *payload)
{
JsonNode *json;
char tid[64], t[10];
double dist = 0, lat, lon, vel, trip, alt, cog;
long tst;
char tmptst[40];
if (!csv_looks_sane(payload))
return (NULL);
if (sscanf(payload, "%[^,],%[^,],%[^,],%lf,%lf,%lf,%lf,%lf,%lf,%lf", tid, tmptst, t, &lat, &lon, &cog, &vel, &alt, &dist, &trip) != 10) {
// fprintf(stderr, "**** payload not CSV: %s\n", payload);
return (NULL);
}
lat /= MILL;
lon /= MILL;
cog *= 10;
alt *= 10;
trip *= 1000;
tst = strtoul(tmptst, NULL, 16);
json = json_mkobject();
json_append_member(json, "_type", json_mkstring("location"));
json_append_member(json, "t", json_mkstring(t));
json_append_member(json, "tid", json_mkstring(tid));
json_append_member(json, "tst", json_mknumber(tst));
json_append_member(json, "lat", json_mknumber(lat));
json_append_member(json, "lon", json_mknumber(lon));
json_append_member(json, "cog", json_mknumber(cog));
json_append_member(json, "vel", json_mknumber(vel));
json_append_member(json, "alt", json_mknumber(alt));
json_append_member(json, "dist", json_mknumber(dist));
json_append_member(json, "trip", json_mknumber(trip));
json_append_member(json, "csv", json_mkbool(1));
return (json);
}
#define RECFORMAT "%s\t%-18s\t%s\n"
/*
* Store payload in REC file unless our Lua putrec() function says
* we shouldn't for this particular user/device combo. Use the epoch
* time to construct path name and "key"
*/
static void putrec(struct udata *ud, time_t epoch, UT_string *reltopic, UT_string *username, UT_string *device, char *string)
{
FILE *fp;
int rc = 0;
if (ud->norec)
return;
#ifdef WITH_LUA
rc = hooks_norec(ud, UB(username), UB(device), string);
#endif
if (rc == 0) {
if ((fp = pathn("a", "rec", username, device, "rec", epoch)) == NULL) {
olog(LOG_ERR, "Cannot write REC for %s/%s: %m",
UB(username), UB(device));
return;
}
fprintf(fp, RECFORMAT, isotime(epoch),
UB(reltopic), string);
fclose(fp);
}
}
/*
* Payload contains JSON string with a configuration obtained
* via cmd `dump' to the device. Store it "pretty".
*/
static char *prettyfy(char *payloadstring)
{
JsonNode *json;
char *pretty_js;
if ((json = json_decode(payloadstring)) == NULL) {
olog(LOG_ERR, "Cannot decode JSON from %s", payloadstring);
return (NULL);
}
pretty_js = json_stringify(json, "\t");
json_delete(json);
return (pretty_js);
}
static void xx_dump(struct udata *ud, UT_string *username, UT_string *device, char *payloadstring, char *type, char *extension)
{
static UT_string *ts = NULL;
char *pretty_js = prettyfy(payloadstring);
utstring_renew(ts);
utstring_printf(ts, "%s/%s/%s/%s",
STORAGEDIR,
type,
UB(username),
UB(device));
if (mkpath(UB(ts)) < 0) {
olog(LOG_ERR, "Cannot mkdir %s: %m", UB(ts));
if (pretty_js) free(pretty_js);
return;
}
utstring_printf(ts, "/%s-%s.%s", UB(username), UB(device), extension);
if (ud->verbose) {
printf("Received %s dump, storing at %s\n", type, UB(ts));
}
safewrite(UB(ts), (pretty_js) ? pretty_js : payloadstring);
if (pretty_js) free(pretty_js);
}
/* Dump a config payload; get the 'configuration' element out of the dumped payloadstring */
void config_dump(struct udata *ud, UT_string *username, UT_string *device, char *payloadstring)
{
JsonNode *json = json_decode(payloadstring), *config;
if (json == NULL)
return;
if ((config = json_find_member(json, "configuration")) != NULL) {
char *js_string = json_stringify(config, NULL);
if (js_string) {
xx_dump(ud, username, device, js_string, "config", "otrc");
json_delete(json);
free(js_string);
}
}
}
/* Dump a waypoints (plural) payload */
void waypoints_dump(struct udata *ud, UT_string *username, UT_string *device, char *payloadstring)
{
JsonNode *json = json_decode(payloadstring), *j;
char *js = NULL;
if (json == NULL)
return;
if ((j = json_find_member(json, "r")) != NULL) {
json_delete(j);
js = json_stringify(json, NULL);
json_delete(json);
}
xx_dump(ud, username, device, (js) ? js : payloadstring, "waypoints", "otrw");
load_otrw_from_string(ud, UB(username), UB(device), (js) ? js : payloadstring);
if (js)
free(js);
}
#ifdef WITH_GREENWICH
/*
* key is "batt", "ext", or "status"
* value is a string which contains a number
*
* Open/create a file at gw/user/device/user-device.json. Append to the existing array,
* limiting the number of array entries.
*/
void store_gwvalue(char *username, char *device, time_t tst, char *key, char *value)
{
static UT_string *ts = NULL, *u = NULL, *d = NULL;
JsonNode *array, *o, *j;
int count = 0;
char *js;
utstring_renew(ts);
utstring_renew(u);
utstring_renew(d);
utstring_printf(u, "%s", username);
utstring_printf(d, "%s", device);
lowercase(UB(u));
lowercase(UB(d));
utstring_printf(ts, "%s/last/%s/%s",
STORAGEDIR,
UB(u),
UB(d));
if (mkpath(UB(ts)) < 0) {
olog(LOG_ERR, "Cannot mkdir %s: %m", UB(ts));
return;
}
utstring_printf(ts, "/%s.json", key);
/* Read file into array or create array on error */
if ((js = slurp_file(UB(ts), TRUE)) != NULL) {
if ((array = json_decode(js)) == NULL) {
array = json_mkarray();
}
free(js);
} else {
array = json_mkarray();
}
/* Count elements in array and pop first if too long */
json_foreach(j, array) {
++count;
}
if (count >= GWNUMBERSMAX) {
j = json_first_child(array);
json_delete(j);
}
o = json_mkobject();
json_append_member(o, "tst", json_mknumber(tst));
json_append_member(o, key, json_mknumber(atof(value)));
json_append_element(array, o);
if ((js = json_stringify(array, NULL)) != NULL) {
safewrite(UB(ts), js);
free(js);
}
json_delete(array);
}
#endif /* GREENWICH */
#if WITH_ENCRYPT
/*
* Decrypt the payload and return a pointer to allocated space containing
* the clear text.
* p64 contains the base64-encoded payload from the device. `username'
* and `device' are needed to obtain the decryption key for this object.
*/
unsigned char *decrypt(struct udata *ud, char *topic, char *p64, char *username, char *device)
{
unsigned char key[crypto_secretbox_KEYBYTES];
unsigned char *ciphertext, *cleartext;
size_t ciphertext_len;
int n, klen;
static UT_string *userdev = NULL;
utstring_renew(userdev);
utstring_printf(userdev, "%s-%s", username, device);
lowercase(UB(userdev));
for (n = 0; n < strlen(UB(userdev)); n++) {
if (UB(userdev)[n] == ' ')
UB(userdev)[n] = '-';
}
memset(key, 0, sizeof(key));
klen = gcache_get(ud->keydb, (char *)UB(userdev), (char *)key, sizeof(key));
if (klen < 1) {
olog(LOG_ERR, "no decryption key for %s in %s", UB(userdev), topic);
return (NULL);
}
debug(ud, "Key for %s is [%s]", UB(userdev), key);
n = strlen(p64); /* This is more than enough */
if ((ciphertext = base64_decode(p64, &ciphertext_len)) == NULL) {
olog(LOG_ERR, "payload of %s cannot be base64-decoded", topic);
return (NULL);
}
debug(ud, "START DECRYPT. clen==%lu", ciphertext_len);
if ((cleartext = calloc(n, sizeof(unsigned char))) == NULL) {
free(ciphertext);
return (NULL);
}
if (crypto_secretbox_open_easy(cleartext, // message
ciphertext + crypto_secretbox_NONCEBYTES, // skip over nonce
ciphertext_len - crypto_secretbox_NONCEBYTES, // len (- nonce)
ciphertext, // nonce
key) != 0)
{
olog(LOG_ERR, "payload of %s cannot be decrypted; forged?", topic);
free(ciphertext);
free(cleartext);
return (NULL);
}
debug(ud, "DECRYPTED: %s", (char *)cleartext);
free(ciphertext);
return (cleartext);
}
#endif /* ENCRYPT */
void handle_message(void *userdata, char *topic, char *payload, size_t payloadlen, int retain, int httpmode, int was_encrypted)
{
JsonNode *json, *j, *geo = NULL;
char *tid = NULL, *t = NULL, *p;
double lat, lon, acc;
long tst;
struct udata *ud = (struct udata *)userdata;
char *topics[42];
int count = 0, cached;
static UT_string *basetopic = NULL, *username = NULL, *device = NULL, *addr = NULL, *cc = NULL, *ghash = NULL, *ts = NULL;
static UT_string *reltopic = NULL, *filename = NULL;
char *jsonstring, *_typestr = NULL;
time_t now, epoch;
int pingping = FALSE, skipslash = 0, geoprec = geohash_prec();
int r_ok = TRUE; /* True if recording enabled for a publish */
payload_type _type;
/*
* mosquitto_message->
* int mid;
* char *topic;
* void *payload;
* int payloadlen;
* int qos;
* bool retain;
*/
time(&now);
monitorhook(ud, now, topic);
chomp(payload);
debug(ud, "%s (plen=%d, r=%d) [%s]", topic, payloadlen, retain, payload);
if (payloadlen == 0) {
return;
}
if (retain == TRUE && ud->ignoreretained) {
return;
}
// printf("%s %s\n", m->topic, bindump(m->payload, m->payloadlen)); fflush(stdout);
utstring_renew(ts);
utstring_renew(basetopic);
utstring_renew(username);
utstring_renew(device);
if ((count = splitter(topic, "/", topics)) == -1) {
return;
}
/*
* Do we have a leading / in topic?
* Also, if topic is too short, ignore and return. We *demand* 3 parts
* i.e. "owntracks/user/device"
*/
if (topics[0] == NULL) {
/* Topic has leading / */
skipslash = 1;
}
if (count - skipslash < 3) {
fprintf(stderr, "Ignoring short topic %s\n", topic);
splitterfree(topics);
return;
}
/*
* Determine "relative topic", relative to base, i.e. whatever comes
* behind owntracks/user/device/. If it's the base topic, use "*".
*/
utstring_renew(reltopic);
if (count != (3 + skipslash)) {
int j;
for (j = 3 + skipslash; j < count; j++) {
utstring_printf(reltopic, "%s%c", topics[j], (j < count - 1) ? '/' : 0);
}
} else {
utstring_printf(reltopic, "*");
}
if (utstring_len(reltopic) == 0)
utstring_printf(reltopic, "-");
/*
* Are we handing ../user/device/pico from OwnTracks Pico / Homie?
* Pretend we have a base-topic publish, so change "/pico" to "*"
*/
if ( (count == (4 + skipslash)) && (strcmp(UB(reltopic), "pico") == 0)) {
utstring_renew(reltopic);
utstring_printf(reltopic, "*");
}
utstring_printf(basetopic, "%s/%s/%s", topics[0 + skipslash], topics[1 + skipslash], topics[2 + skipslash]);
utstring_printf(username, "%s", topics[1 + skipslash]);
utstring_printf(device, "%s", topics[2 + skipslash]);
#ifdef WITH_PING
if (!strcmp(UB(username), "ping") && !strcmp(UB(device), "ping")) {
pingping = TRUE;
}
#endif
#ifdef WITH_GREENWICH
/*
* For Greenwich: handle owntracks/user/device/voltage/batt, voltage/ext, and
* status all of which have a numeric payload.
*/
if ((count == 5+skipslash && !strcmp(topics[3+skipslash], "voltage")) &&
(!strcmp(topics[4+skipslash], "batt") || !strcmp(topics[4+skipslash], "ext"))) {
store_gwvalue(UB(username), UB(device), now, topics[4+skipslash], payload);
}
if (count == 4+skipslash && !strcmp(topics[3+skipslash], "status")) {
store_gwvalue(UB(username), UB(device), now, "status", payload);
}
/* Fall through to store this payload in the REC file as well. */
#endif
splitterfree(topics);
/*
* Now let's see if this contains some sort of valid JSON
* or an OwnTracks CSV. If it doesn't, just store this payload because
* there's nothing left for us to do with it.
*/
if ((json = json_decode(payload)) == NULL) {
if ((json = csv_to_json(payload)) == NULL) {
/* It's not JSON or it's not a location CSV; store it using
* now as time -- we have no other */
putrec(ud, now, reltopic, username, device, bindump(payload, payloadlen));
return;
}
}
if (ud->skipdemo && (json_find_member(json, "_demo") != NULL)) {
json_delete(json);
return;
}
_type = T_UNKNOWN;
if ((j = json_find_member(json, "_type")) != NULL) {
if (j->tag == JSON_STRING) {
_typestr = strdup(j->string_);
if (!strcmp(j->string_, "location")) _type = T_LOCATION;
else if (!strcmp(j->string_, "beacon")) _type = T_BEACON;
else if (!strcmp(j->string_, "card")) _type = T_CARD;
else if (!strcmp(j->string_, "cmd")) _type = T_CMD;
else if (!strcmp(j->string_, "lwt")) _type = T_LWT;
else if (!strcmp(j->string_, "steps")) _type = T_STEPS;
else if (!strcmp(j->string_, "transition")) _type = T_TRANSITION;
else if (!strcmp(j->string_, "waypoint")) _type = T_WAYPOINT;
else if (!strcmp(j->string_, "waypoints")) _type = T_WAYPOINTS;
else if (!strcmp(j->string_, "dump")) _type = T_CONFIG;
#if WITH_ENCRYPT
else if (!strcmp(j->string_, "encrypted")) _type = T_ENCRYPTED;
#endif /* WITH_ENCRYPT */
}
}
switch (_type) {
case T_CARD:
do_info(ud, username, device, json);
goto cleanup;
case T_BEACON:
#ifdef WITH_HTTP
if (ud->mgserver && !pingping) {
json_append_member(json, "topic", json_mkstring(topic));
json_append_member(json, "username", json_mkstring(UB(username)));
json_append_member(json, "device", json_mkstring(UB(device)));
http_ws_push_json(ud->mgserver, json);
}
#endif
if (r_ok) {
putrec(ud, now, reltopic, username, device, bindump(payload, payloadlen));
}
goto cleanup;
case T_LWT:
/*
* LWT gets a pseudo-reltopic called 'lwt'; reason: if we keep the
* empty original reltopic, it would become '*' in the .rec file
* which confuses the recorder when serving location data.
* Also, this appears to be sensible, and it probably should have
* been that way all along in the apps.
*/
utstring_clear(reltopic);
utstring_printf(reltopic, "lwt");
/* Fall through */
case T_CMD:
case T_STEPS:
if (r_ok) {
putrec(ud, now, reltopic, username, device, bindump(payload, payloadlen));
}
goto cleanup;
case T_WAYPOINTS:
waypoints_dump(ud, username, device, payload);
goto cleanup;
case T_CONFIG:
config_dump(ud, username, device, payload);
goto cleanup;
case T_WAYPOINT:
case T_TRANSITION:
case T_LOCATION:
break;
#if WITH_ENCRYPT
case T_ENCRYPTED:
/*
* Obtain the `data' element from JSON, and try and decrypt
* that. If successful, we use the decrypted message as
* payload, and invoke this function again to do the
* heavy lifting.
*/
if ((j = json_find_member(json, "data")) != NULL) {
if (j->tag == JSON_STRING) {
char *cleartext;
cleartext = (char *)decrypt(ud, topic, j->string_, UB(username), UB(device));
if (cleartext != NULL) {
handle_message(ud, topic, cleartext, strlen(cleartext), retain, httpmode, TRUE);
free(cleartext);
}
if (_typestr) free(_typestr);
json_delete(json);
return;
}
}
olog(LOG_ERR, "no `data' in encrypted %s", topic);
json_delete(json);
return;
break;
#endif /* WITH_ENCRYPT */
default:
if (r_ok) {
putrec(ud, now, reltopic, username, device, bindump(payload, payloadlen));
}
goto cleanup;
}
if (r_ok == FALSE)
goto cleanup;
/*
* We are now handling location-related JSON. Normalize tst, lat, lon
* to numbers, particularly for Greenwich which produces strings
* currently. We're normalizing *in* json which replaces strings by
* numbers.
*/
tst = time(NULL);
if ((j = json_find_member(json, "tst")) != NULL) {
if (j->tag == JSON_STRING) {
tst = strtoul(j->string_, NULL, 10);
json_delete(j);
json_append_member(json, "tst", json_mknumber(tst));
} else {
tst = (unsigned long)j->number_;
}
}
lat = number(json, "lat");
lon = number(json, "lon");
if (isnan(lat) || isnan(lon)) {
olog(LOG_ERR, "lat or lon for %s are NaN: %s", topic, bindump(payload, payloadlen));
goto cleanup;
}
/*
if (impossible_rule(ud, UB(username), UB(device), tst, lat, lon) == TRUE) {
goto cleanup;
}
*/
if ((j = json_find_member(json, "acc")) != NULL) {
if (j->tag == JSON_STRING) {
acc = atof(j->string_);
json_delete(j);
json_append_member(json, "acc", json_mknumber(acc));
}
}
if ((j = json_find_member(json, "tid")) != NULL) {
if (j->tag == JSON_STRING) {
tid = strdup(j->string_);
}
}
if ((j = json_find_member(json, "t")) != NULL) {
if (j && j->tag == JSON_STRING) {
t = strdup(j->string_);
}
}
if ((j = json_find_member(json, "_geoprec")) != NULL) {
if (j->tag == JSON_STRING) {
geoprec = atoi(j->string_);
} else {
geoprec = j->number_;
}
}
/*
* If the topic we are handling is in topic2tid, replace the TID
* in this payload with that from the database.
*/
if (ud->t2t) {
char newtid[BUFSIZ];
long blen;
if ((blen = gcache_get(ud->t2t, topic, newtid, sizeof(newtid))) > 0) {
if ((j = json_find_member(json, "tid")) != NULL) {
json_delete(j);
}
json_append_member(json, "tid", json_mkstring(newtid));
}
}
/*
* Chances are high that what we have now contains lat, lon. Attempt to
* perform or retrieve reverse-geo.
*/
utstring_renew(ghash);
utstring_renew(addr);
utstring_renew(cc);
p = geohash_encode(lat, lon, abs(geoprec));
if (p != NULL) {
utstring_printf(ghash, "%s", p);
free(p);
}
debug(ud, " >> evaluate ud->revgeo = %d",ud->revgeo);
cached = FALSE;
if (ud->revgeo == TRUE) {
#ifdef WITH_LUA
char *lua_func = "otr_revgeo";
if ((j = json_find_member(json, "_lua")) != NULL) {
if (j->tag == JSON_STRING) {
lua_func = j->string_;
}
}
if ((geo = hook_revgeo(ud, lua_func, topic, UB(username), UB(device), lat, lon)) != NULL) {
if ((j = json_find_member(geo, "_rec")) != NULL) {
if (j->bool_ == true) {
json_delete(j);
json_copy_to_object(json, geo, false);
geo = NULL; /* Reset so it's not copied again later */
}
}
} else {
#endif /* WITH_LUA */
debug(ud, " >> check cached");
if ((geo = gcache_json_get(ud->gc, UB(ghash))) != NULL) {
/* Habemus cached data */
debug(ud, " >> cached == TRUE");
cached = TRUE;
if ((j = json_find_member(geo, "cc")) != NULL) {
utstring_printf(cc, "%s", j->string_);
} else {
cached = FALSE;
}
if ((j = json_find_member(geo, "addr")) != NULL) {
utstring_printf(addr, "%s", j->string_);
} else {
cached = FALSE;
}
}
if (!cached) {
debug(ud, " >> cached == FALSE");
if (geoprec > 0) {
if ((geo = revgeo(ud, lat, lon, addr, cc)) != NULL) {
gcache_json_put(ud->gc, UB(ghash), geo);
} else {
/* We didn't obtain reverse Geo, maybe because of over
* quota; make a note of the missing geohash */
char gfile[BUFSIZ];
FILE *fp;
snprintf(gfile, BUFSIZ, "%s/ghash/missing", STORAGEDIR);
if ((fp = fopen(gfile, "a")) != NULL) {
fprintf(fp, "%s %lf %lf\n", UB(ghash), lat, lon);
fclose(fp);
}
}
}
}
#ifdef WITH_LUA
}
#endif /* WITH_LUA */
} else {
utstring_printf(cc, "??");
utstring_printf(addr, "n.a.");
}
if (httpmode) {
json_append_member(json, "_http", json_mkbool(1));
}
if (was_encrypted) {
json_append_member(json, "_decrypted", json_mkbool(1));
}
/*
* We have normalized data in the JSON, so we can now write it
* out to the REC file.
*/
if (!pingping) {
if ((jsonstring = json_stringify(json, NULL)) != NULL) {
double d_epoch = number(json, "tst");
epoch = (isnan(d_epoch)) ? now : d_epoch;
putrec(ud, epoch, reltopic, username, device, jsonstring);
free(jsonstring);
}
}
/*
* Append a few bits to the location type to add to LAST and
* for Lua / Websockets.
* I need a unique "key" in the Websocket clients to keep track
* of which device is being updated; use topic.
*/
#if WITH_GREENWICH
if (strcmp(UB(reltopic), "alarm") == 0) {
json_append_member(json, "topic", json_mkstring(UB(basetopic)));
json_append_member(json, "_reltopic", json_mkstring("alarm"));
} else {
json_append_member(json, "topic", json_mkstring(topic));
}
#else
json_append_member(json, "topic", json_mkstring(topic));
#endif
/*
* We have to know which user/device this is for in order to
* determine whether a connected Websocket client is authorized
* to see this. Add user/device
*/
json_append_member(json, "username", json_mkstring(UB(username)));
json_append_member(json, "device", json_mkstring(UB(device)));
json_append_member(json, "ghash", json_mkstring(UB(ghash)));
if (_type == T_LOCATION || _type == T_WAYPOINT) {
char *component;
utstring_renew(filename);
if (_type == T_LOCATION) {
component = "last";
utstring_printf(filename, "%s-%s.json",
UB(username), UB(device));
} else if (_type == T_WAYPOINT) {
component = "waypoints";
utstring_printf(filename, "%s.json", isotime(tst));
}
if ((jsonstring = json_stringify(json, NULL)) != NULL) {
utstring_printf(ts, "%s/%s/%s/%s",