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recorder.c
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/*
* OwnTracks Recorder
* Copyright (C) 2015-2023 Jan-Piet Mens <jpmens@gmail.com>
*
* 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"
#include <dirent.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 publish(struct udata *userdata, char *topic, char *payload)
{
struct udata *ud = (struct udata *)userdata;
int qos = 2;
mosquitto_publish(ud->mosq, NULL, topic, strlen(payload), payload, qos, false);
}
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_TOURS
static char *elem(JsonNode *json, char *e)
{
JsonNode *j;
char *val = "-";
if ((j = json_find_member(json, e)) != NULL) {
if (j->tag == JSON_STRING) {
val = j->string_;
}
}
return (val);
}
# endif /* WITH_TOURS */
#ifdef WITH_TOURS
void do_request(struct udata *ud, UT_string *username, UT_string *device, char *payloadstring, bool httpmode, JsonNode **jnode)
{
JsonNode *json = json_decode(payloadstring), *j, *r, *resp;
char *request_type = NULL, *js;
static UT_string *url, *fulltopic;
static int virgin = 1;
static regex_t regex;
int cflags = REG_EXTENDED | REG_ICASE | REG_NOSUB;
if (json == NULL)
return;
utstring_renew(url);
utstring_renew(fulltopic);
utstring_printf(fulltopic, "owntracks/%s/%s/cmd", UB(username), UB(device));
if ((js = json_stringify(json, NULL)) != NULL) {
olog(LOG_DEBUG, "do_request gets: %s", js);
free(js);
}
// 3d9d97d4-a27e-4cd1-842f-6bf51c18a5c2.json
#define UUID_RE "^([[:alnum:]]{8})-([[:alnum:]]{4})-([[:alnum:]]{4})-([[:alnum:]]{4})-([[:alnum:]]{12})\\.json"
if (virgin) {
virgin = !virgin;
if (regcomp(®ex, UUID_RE, cflags)) {
olog(LOG_ERR, "Cannot compile UUID RE");
return;
}
}
if ((j = json_find_member(json, "request")) != NULL) {
request_type = j->string_;
}
if (strcmp(request_type, "tour") == 0) {
FILE *fp;
char path[BUFSIZ];
if ((r = json_find_member(json, "tour")) == NULL) {
return;
}
char *uuid = uuid4();
utstring_printf(url, "%s/view/%s",
ud->http_prefix ? ud->http_prefix : "OTR_HTTPPREFIX",
uuid);
JsonNode *o = json_mkobject();
json_append_member(o, "page", json_mkstring("leafletmap.html"));
json_append_member(o, "user", json_mkstring(UB(username)));
json_append_member(o, "device", json_mkstring(UB(device)));
json_append_member(o, "label", json_mkstring(elem(r, "label")));
json_append_member(o, "zoom", json_mknumber(6));
json_append_member(o, "from", json_mkstring(elem(r, "from")));
json_append_member(o, "to", json_mkstring(elem(r, "to")));
json_append_member(o, "uuid", json_mkstring(uuid));
json_append_member(o, "url", json_mkstring(UB(url)));
snprintf(path, sizeof(path), "%s.json", uuid);
if ((fp = tourfile(ud, path, "w")) != NULL) {
char *js = json_stringify(o, " ");
fprintf(fp, "%s\n", js);
free(js);
fclose(fp);
} else {
olog(LOG_ERR, "Can't create tour at %s: %m", path);
json_delete(o);
return;
}
json_delete(o);
resp = json_mkobject();
json_append_member(resp, "_type", json_mkstring("cmd"));
json_append_member(resp, "action", json_mkstring("response"));
json_append_member(resp, "request", json_mkstring("tour"));
json_append_member(resp, "status", json_mknumber(200));
JsonNode *nt = json_mkobject();
json_copy_to_object(nt, r, false);
json_append_member(nt, "uuid", json_mkstring(uuid));
json_append_member(nt, "url", json_mkstring(UB(url)));
json_append_member(resp, "tour", nt);
if (httpmode) {
*jnode = resp; // caller will delete `resp'
return;
}
#ifdef WITH_MQTT
if ((js = json_stringify(resp, " ")) != NULL) {
publish(ud, UB(fulltopic), js);
free(js);
}
#endif
json_delete(resp);
} else if (strcmp(request_type, "tours") == 0) {
JsonNode *arr, *o;
char path[BUFSIZ];
DIR *dirp;
struct dirent *dp;
int nomatch, ntour = 0;
resp = json_mkobject();
json_append_member(resp, "_type", json_mkstring("cmd"));
json_append_member(resp, "action", json_mkstring("response"));
json_append_member(resp, "request", json_mkstring("tours"));
arr = json_mkarray();
if ((dirp = opendir(toursdir())) != NULL) {
while ((dp = readdir(dirp)) != NULL) {
char *fn = dp->d_name;
if (dp->d_type != DT_REG)
continue;
nomatch = regexec(®ex, fn, 0, NULL, 0);
if (nomatch)
continue;
o = json_mkobject();
snprintf(path, sizeof(path), "%s/%s", toursdir(), fn);
if (json_copy_from_file(o, path) == false) {
olog(LOG_ERR, "Can't copy JSON from %s", path);
json_delete(o);
continue;
}
if (strcasecmp(elem(o, "user"), UB(username)) != 0 ||
strcasecmp(elem(o, "device"), UB(device)) != 0) {
olog(LOG_DEBUG, "Skipping %s: owner mismatch", path);
json_delete(o);
continue;
}
json_append_element(arr, o);
++ntour;
}
closedir(dirp);
} else {
perror(ud->viewsdir);
}
json_append_member(resp, "tours", arr);
json_append_member(resp, "ntours", json_mknumber(ntour));
olog(LOG_DEBUG, "Returning ntours=%d for %s/%s", ntour, UB(username), UB(device));
if (httpmode) {
*jnode = resp; // caller will delete `resp'
return;
}
#ifdef WITH_MQTT
if ((js = json_stringify(resp, " ")) != NULL) {
publish(ud, UB(fulltopic), js);
free(js);
}
#endif
json_delete(resp);
} else if (strcmp(request_type, "untour") == 0) {
JsonNode *r, *o;
char path[BUFSIZ], *uuid;
if ((r = json_find_member(json, "uuid")) == NULL) {
fprintf(stderr, "No uuid in untour request\n");
return;
}
uuid = r->string_;
olog(LOG_DEBUG, "Untour %s for %s/%s", uuid, UB(username), UB(device));
snprintf(path, sizeof(path), "%s/%s.json", toursdir(), uuid);
if (access(path, R_OK) < 0) {
olog(LOG_ERR, "Can't find tour %s: %m", uuid);
json_delete(r);
return;
}
o = json_mkobject();
snprintf(path, sizeof(path), "%s/%s.json", toursdir(), uuid);
if (json_copy_from_file(o, path) == false) {
olog(LOG_ERR, "Can't copy JSON from %s", path);
json_delete(o);
json_delete(r);
return;
}
if (strcasecmp(elem(o, "user"), UB(username)) != 0 ||
strcasecmp(elem(o, "device"), UB(device)) != 0) {
olog(LOG_DEBUG, "Skipping %s: owner mismatch", uuid);
json_delete(o);
return;
}
if (remove(path) != 0) {
olog(LOG_ERR, "Can't delete tour %s: %m", r->string_);
}
json_delete(r);
}
}
#endif /* WITH_TOURS */
#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 */
/*
* if `jnode' will be set to a JsonNode object with results added to the
* outgoing HTTP payload; the caller (in http.c) will delete the object
* when it returns the payload to the client.
*/
void handle_message(void *userdata, char *topic, char *payload, size_t payloadlen, int retain, int httpmode, int was_encrypted, JsonNode **jnode)
{
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;
#ifdef WITH_TOURS
else if (!strcmp(j->string_, "request")) _type = T_REQUEST;
#endif /* WITH_TOURS */
#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, NULL);
free(cleartext);
}
if (_typestr) free(_typestr);
json_delete(json);
return;
}
}