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recorder.c
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/*
* Copyright (C) 2015 Jan-Piet Mens <[email protected]> and OwnTracks
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* JAN-PIET MENS OR OWNTRACKS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <mosquitto.h>
#include <getopt.h>
#include <time.h>
#include <math.h>
#include "json.h"
#include <sys/utsname.h>
#include <regex.h>
#include "utstring.h"
#include "geo.h"
#include "geohash.h"
#include "base64.h"
#include "misc.h"
#include "util.h"
#include "storage.h"
#ifdef WITH_LMDB
# include "gcache.h"
#endif
#ifdef WITH_HTTP
# include "http.h"
#endif
#ifdef WITH_LUA
# include "hooks.h"
#endif
#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
static int run = 1;
double number(JsonNode *j, char *element)
{
JsonNode *m;
double d;
if ((m = json_find_member(j, element)) != NULL) {
if (m->tag == JSON_NUMBER) {
return (m->number_);
} else if (m->tag == JSON_STRING) {
d = atof(m->string_);
/* Normalize to number */
json_remove_from_parent(m);
json_append_member(j, element, json_mknumber(d));
return (d);
}
}
return (NAN);
}
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;
utstring_renew(name);
utstring_renew(face);
/* I know the payload is valid JSON: write card */
if ((fp = pathn("wb", "cards", username, NULL, "json")) != 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 = malloc(utstring_len(face))) != NULL) {
int imglen;
if ((imglen = base64_decode(UB(face), img)) > 0) {
if ((fp = pathn("wb", "photos", username, NULL, "png")) != NULL) {
fwrite(img, sizeof(char), imglen, fp);
fclose(fp);
}
}
free(img);
}
return (rc);
}
void do_msg(void *userdata, UT_string *username, UT_string *device, JsonNode *json)
{
struct udata *ud = (struct udata *)userdata;
FILE *fp;
/* I know the payload is valid JSON: write message */
if ((fp = pathn("ab", "msg", username, NULL, "json")) != NULL) {
char *js = json_stringify(json, NULL);
if (js) {
fprintf(fp, "%s\n", js);
free(js);
}
fclose(fp);
}
if (ud->verbose) {
printf("* MSG: %s-%s\n", UB(username), UB(device));
}
}
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);
}
/*
* 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.
*/
static void putrec(struct udata *ud, time_t now, UT_string *reltopic, UT_string *username, UT_string *device, char *string)
{
FILE *fp;
int rc = 0;
#ifdef WITH_LUA
rc = hooks_norec(ud, UB(username), UB(device), string);
#endif
if (rc == 0) {
if ((fp = pathn("a", "rec", username, device, "rec")) == NULL) {
olog(LOG_ERR, "Cannot write REC for %s/%s: %m",
UB(username), UB(device));
}
fprintf(fp, RECFORMAT, isotime(now),
UB(reltopic), string);
fclose(fp);
}
}
/*
* Payload contains JSON string with a configuration obtained
* via cmd `dump' to the device. Store it "pretty".
*/
void config_dump(struct udata *ud, UT_string *username, UT_string *device, char *payloadstring)
{
JsonNode *json;
static UT_string *ts = NULL;
char *pretty_js;
if ((json = json_decode(payloadstring)) == NULL) {
olog(LOG_ERR, "Cannot decode JSON from %s", payloadstring);
return;
}
pretty_js = json_stringify(json, "\t");
json_delete(json);
utstring_renew(ts);
utstring_printf(ts, "%s/%s/%s/%s",
STORAGEDIR,
"config",
UB(username),
UB(device));
if (mkpath(UB(ts)) < 0) {
olog(LOG_ERR, "Cannot mkdir %s: %m", UB(ts));
return;
}
utstring_printf(ts, "/%s-%s.otrc", UB(username), UB(device));
if (ud->verbose) {
printf("Received configuration dump, storing at %s\n", UB(ts));
}
safewrite(UB(ts), pretty_js);
free(pretty_js);
}
/*
* Payload contains JSON string with an array of waypoints. Dump
* these into a single file.
*/
void waypoints_dump(struct udata *ud, UT_string *username, UT_string *device, char *payloadstring)
{
static UT_string *ts = NULL;
utstring_renew(ts);
utstring_printf(ts, "%s/%s/%s/%s",
STORAGEDIR,
"waypoints",
UB(username),
UB(device));
if (mkpath(UB(ts)) < 0) {
olog(LOG_ERR, "Cannot mkdir %s: %m", UB(ts));
return;
}
utstring_printf(ts, "/%s-%s.otrw", UB(username), UB(device));
if (ud->verbose) {
printf("Received waypoints dump, storing at %s\n", UB(ts));
}
safewrite(UB(ts), payloadstring);
}
void on_message(struct mosquitto *mosq, void *userdata, const struct mosquitto_message *m)
{
JsonNode *json, *j, *geo = NULL;
char *tid = NULL, *t = NULL, *p;
double lat, lon;
long tst;
struct udata *ud = (struct udata *)userdata;
char **topics;
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;
char *jsonstring, *_typestr = NULL;
time_t now;
int pingping = FALSE, skipslash = 0;
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, m->topic);
if (m->payloadlen == 0) {
return;
}
if (m->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 (mosquitto_sub_topic_tokenise(m->topic, &topics, &count) != MOSQ_ERR_SUCCESS) {
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", m->topic);
mosquitto_sub_topic_tokens_free(&topics, count);
return;
}
/*
* Determine "relative topic", relative to base, i.e. whatever comes
* behind ownntracks/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) ? '/' : ' ');
}
} else {
utstring_printf(reltopic, "*");
}
if (utstring_len(reltopic) == 0)
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]);
mosquitto_sub_topic_tokens_free(&topics, count);
#ifdef WITH_PING
if (!strcmp(UB(username), "ping") && !strcmp(UB(device), "ping")) {
pingping = TRUE;
}
#endif
/*
* First things first: 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(m->payload)) == NULL) {
if ((json = csv_to_json(m->payload)) == NULL) {
#ifdef WITH_RONLY
/*
* If the base topic belongs to an RONLY user, store
* the payload.
*/
char buf[BUFSIZ];
long blen;
blen = gcache_get(ud->ronlydb, UB(basetopic), buf, sizeof(buf));
if (blen > 0) {
// puts("*** storing plain publis");
putrec(ud, now, reltopic, username, device, bindump(m->payload, m->payloadlen));
}
#else
/* It's not JSON or it's not a location CSV; store it */
putrec(ud, now, reltopic, username, device, bindump(m->payload, m->payloadlen));
#endif
return;
}
}
if (ud->skipdemo && (json_find_member(json, "_demo") != NULL)) {
json_delete(json);
return;
}
#ifdef WITH_RONLY
/*
* This is a special mode in which location (and a few other)
* publishes will be recorded only if r:true in the payload.
* If we cannot find `r' in the JSON, or if `r' isn't true,
* set r_ok to FALSE. We cannot just bail out here, because
* we still want info, cards &c.
*/
if ((j = json_find_member(json, "r")) == NULL) {
char buf[BUFSIZ];
long blen;
r_ok = FALSE;
/*
* This JSON payload might actually belong to an RONLY user
* but it doesn't have an `r:true' in it. Determine whether
* the basetopic belongs to such a user, and force r_ok
* accordingly.
*/
blen = gcache_get(ud->ronlydb, UB(basetopic), buf, sizeof(buf));
if (blen > 0) {
r_ok = TRUE;
// printf("*** forcing TRUE b/c ronlydb (blen=%ld)\n", blen);
}
} else {
r_ok = TRUE;
if ((j->tag != JSON_BOOL) || (j->bool_ == FALSE)) {
r_ok = FALSE;
}
}
/*
* The payload contains an `r:true' so we can make a note of this
* base topic in RONLYdb.
*/
if (r_ok == TRUE) {
int rc;
if ((rc =gcache_put(ud->ronlydb, UB(basetopic), m->payload)) != 0)
olog(LOG_ERR, "Cannot store %s in ronlydb: rc==%d", UB(basetopic), rc);
} else {
int rc;
if ((rc = gcache_del(ud->ronlydb, UB(basetopic))) != 0)
olog(LOG_ERR, "Cannot delete %s from ronlydb: rc==%d", UB(basetopic), rc);
}
#endif
_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_, "configuration")) _type = T_CONFIG;
else if (!strcmp(j->string_, "lwt")) _type = T_LWT;
else if (!strcmp(j->string_, "msg")) _type = T_MSG;
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_DUMP;
}
}
switch (_type) {
case T_CARD:
do_info(ud, username, device, json);
goto cleanup;
case T_MSG:
do_msg(ud, username, device, json);
goto cleanup;
case T_BEACON:
case T_CMD:
case T_CONFIG:
case T_LWT:
case T_STEPS:
if (r_ok) {
putrec(ud, now, reltopic, username, device, bindump(m->payload, m->payloadlen));
}
goto cleanup;
case T_WAYPOINTS:
waypoints_dump(ud, username, device, m->payload);
goto cleanup;
case T_DUMP:
config_dump(ud, username, device, m->payload);
goto cleanup;
case T_WAYPOINT:
case T_TRANSITION:
case T_LOCATION:
break;
default:
if (r_ok) {
putrec(ud, now, reltopic, username, device, bindump(m->payload, m->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 && j->tag == JSON_STRING) {
tst = strtoul(j->string_, NULL, 10);
json_remove_from_parent(j);
json_append_member(json, "tst", json_mknumber(tst));
} else {
tst = (unsigned long)j->number_;
}
}
if (isnan(lat = number(json, "lat")) || isnan(lon = number(json, "lon"))) {
olog(LOG_ERR, "lat or lon for %s are NaN: %s", m->topic, bindump(m->payload, m->payloadlen));
goto cleanup;
}
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_);
}
}
#ifdef WITH_LMDB
/*
* 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, m->topic, newtid, sizeof(newtid))) > 0) {
if ((j = json_find_member(json, "tid")) != NULL)
json_remove_from_parent(j);
json_append_member(json, "tid", json_mkstring(newtid));
}
}
#endif
/*
* 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, geohash_prec());
if (p != NULL) {
utstring_printf(ghash, "%s", p);
free(p);
}
cached = FALSE;
if (ud->revgeo == TRUE) {
if ((geo = gcache_json_get(ud->gc, UB(ghash))) != NULL) {
/* Habemus cached data */
cached = TRUE;
if ((j = json_find_member(geo, "cc")) != NULL) {
utstring_printf(cc, "%s", j->string_);
}
if ((j = json_find_member(geo, "addr")) != NULL) {
utstring_printf(addr, "%s", j->string_);
}
} else {
if ((geo = revgeo(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);
}
}
}
} else {
utstring_printf(cc, "??");
utstring_printf(addr, "n.a.");
}
/*
* 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) {
putrec(ud, now, 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.
*/
json_append_member(json, "topic", json_mkstring(m->topic));
/*
* 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) {
UT_string *filename = NULL;
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",
STORAGEDIR,
component,
UB(username),
UB(device));
if (mkpath(UB(ts)) < 0) {
olog(LOG_ERR, "Cannot mkdir %s: %m", UB(ts));
}
utstring_printf(ts, "/%s", UB(filename));
safewrite(UB(ts), jsonstring);
free(jsonstring);
}
}
/*
* Now add more bits for Lua and Websocket, in particular the
* Geo data.
*/
if (geo) {
json_copy_to_object(json, geo, FALSE);
}
#ifdef WITH_HTTP
if (ud->mgserver && !pingping) {
http_ws_push_json(ud->mgserver, json);
}
#endif
#ifdef WITH_LUA
if (ud->luadata && !pingping) {
hooks_hook(ud, m->topic, json);
}
#endif
if (ud->verbose) {
if (_type == T_LOCATION) {
printf("%c %s %-35s t=%-1.1s tid=%-2.2s loc=%.5f,%.5f [%s] %s (%s)\n",
(cached) ? '*' : '-',
ltime(tst),
m->topic,
(t) ? t : " ",
(tid) ? tid : "",
lat, lon,
UB(cc),
UB(addr),
UB(ghash)
);
} else if (_type == T_TRANSITION) {
JsonNode *e, *d;
e = json_find_member(json, "event");
d = json_find_member(json, "desc");
printf("transition: %s %s\n",
(e) ? e->string_ : "unknown",
(d) ? d->string_ : "unknown");
} else if (_type == T_WAYPOINT) {
j = json_find_member(json, "desc");
printf("waypoint: %s\n", (j) ? j->string_ : "unknown desc");
} else {
if ((jsonstring = json_stringify(json, NULL)) != NULL) {
printf("%s %s\n", _typestr, jsonstring);
free(jsonstring);
} else {
printf("%s received\n", _typestr);
}
}
}
cleanup:
if (geo) json_delete(geo);
if (json) json_delete(json);
if (tid) free(tid);
if (t) free(t);
if (_typestr) free(_typestr);
}
void on_connect(struct mosquitto *mosq, void *userdata, int rc)
{
struct udata *ud = (struct udata *)userdata;
int mid;
JsonNode *t;
json_foreach(t, ud->topics) {
if (t->tag == JSON_STRING) {
olog(LOG_DEBUG, "Subscribing to %s (qos=%d)", t->string_, ud->qos);
mosquitto_subscribe(mosq, &mid, t->string_, ud->qos);
}
}
}
static char *mosquitto_reason(int rc)
{
static char *reasons[] = {
"Connection accepted", /* 0x00 */
"Connection refused: incorrect protocol version", /* 0x01 */
"Connection refused: invalid client identifier", /* 0x02 */
"Connection refused: server unavailable", /* 0x03 */
"Connection refused: bad username or password", /* 0x05 */
"Connection refused: not authorized", /* 0x06 */
"Connection refused: TLS error", /* 0x07 */
};
return ((rc >= 0 && rc <= 0x07) ? reasons[rc] : "unknown reason");
}
void on_disconnect(struct mosquitto *mosq, void *userdata, int reason)
{
#ifdef WITH_LMDB
struct udata *ud = (struct udata *)userdata;
#endif
if (reason == 0) { // client wish
#ifdef WITH_LMDB
gcache_close(ud->gc);
#endif
} else {
olog(LOG_INFO, "Disconnected. Reason: 0x%X [%s]", reason, mosquitto_reason(reason));
}
}
static void catcher(int sig)
{
fprintf(stderr, "Going down on signal %d\n", sig);
run = 0;
}
void usage(char *prog)
{
printf("Usage: %s [options..] topic [topic ...]\n", prog);
printf(" --help -h this message\n");
printf(" --storage -S storage dir (%s)\n", STORAGEDEFAULT);
printf(" --norevgeo -G disable ghash to reverge-geo lookups\n");
printf(" --skipdemo -D do not handle objects with _demo\n");
printf(" --useretained -R process retained messages (default: no)\n");
printf(" --clientid -i MQTT client-ID\n");
printf(" --qos -q MQTT QoS (dflt: 2)\n");
printf(" --pubprefix -P republish prefix (dflt: no republish)\n");
printf(" --host -H MQTT host (localhost)\n");
printf(" --port -p MQTT port (1883)\n");
printf(" --logfacility syslog facility (local0)\n");
printf(" --quiet disable printing of messages to stdout\n");
printf(" --initialize initialize storage\n");
printf(" --label <label> server label (dflt: Recorder)\n");
#ifdef WITH_HTTP
printf(" --http-host <host> HTTP addr to bind to (localhost)\n");
printf(" --http-port <port> -A HTTP port (8083); 0 to disable HTTP\n");
printf(" --doc-root <directory> document root (%s)\n", DOCROOT);
#endif
#ifdef WITH_LUA
printf(" --lua-script <script.lua> path to Lua script. If unset, no Lua hooks\n");
#endif
printf(" --precision ghash precision (dflt: %d)\n", GHASHPREC);
printf(" --hosted use OwnTracks Hosted\n");
printf("\n");
printf("Options override these environment variables:\n");
printf(" $OTR_HOST MQTT hostname\n");
printf(" $OTR_PORT MQTT port\n");
printf(" $OTR_STORAGEDIR\n");
printf(" $OTR_USER\n");
printf(" $OTR_PASS\n");
printf(" $OTR_CAFILE PEM CA certificate chain\n");
printf("For --hosted:\n");
printf(" $OTR_USER username as registered on Hosted\n");
printf(" $OTR_DEVICE connect as device\n");
printf(" $OTR_TOKEN device token\n");
exit(1);
}
int main(int argc, char **argv)
{
struct mosquitto *mosq = NULL;
char err[1024], *p, *username, *password, *cafile, *device;
char *hostname = "localhost", *logfacility = "local0";
#ifdef WITH_LUA
char *luascript = NULL;
#endif
int port = 1883;
int rc, i, ch, hosted = FALSE, initialize = FALSE;
static struct udata udata, *ud = &udata;
struct utsname uts;
UT_string *clientid;
#ifdef WITH_HTTP
int http_port = 8083;
char *doc_root = DOCROOT;
char *http_host = "localhost";
#endif
char *progname = *argv;
udata.qos = DEFAULT_QOS;
udata.ignoreretained = TRUE;
udata.pubprefix = NULL;
udata.skipdemo = TRUE;
udata.revgeo = TRUE;
udata.verbose = TRUE;
#ifdef WITH_LMDB
udata.gc = NULL;
udata.t2t = NULL; /* Topic to TID */
# ifdef WITH_RONLY
udata.ronlydb = NULL; /* RONLY db */
# endif
#endif
#ifdef WITH_HTTP
udata.mgserver = NULL;
#endif
#ifdef WITH_LUA
udata.luadata = NULL;
# ifdef WITH_LMDB
udata.luadb = NULL;
# endif /* WITH_LMDB */
#endif /* WITH_LUA */
udata.label = strdup("Recorder");