int bridge__connect(struct mosquitto_db *db, struct mosquitto *context)
{
int rc, rc2;
int i;
char *notification_topic;
int notification_topic_len;
uint8_t notification_payload;
if(!context || !context->bridge) return MOSQ_ERR_INVAL;
context->state = mosq_cs_new;
context->sock = INVALID_SOCKET;
context->last_msg_in = mosquitto_time();
context->next_msg_out = mosquitto_time() + context->bridge->keepalive;
context->keepalive = context->bridge->keepalive;
context->clean_session = context->bridge->clean_session;
context->in_packet.payload = NULL;
context->ping_t = 0;
context->bridge->lazy_reconnect = false;
bridge__packet_cleanup(context);
db__message_reconnect_reset(db, context);
if(context->clean_session){
db__messages_delete(db, context);
}
/* Delete all local subscriptions even for clean_session==false. We don't
* remove any messages and the next loop carries out the resubscription
* anyway. This means any unwanted subs will be removed.
*/
sub__clean_session(db, context);
for(i=0; i<context->bridge->topic_count; i++){
if(context->bridge->topics[i].direction == bd_out || context->bridge->topics[i].direction == bd_both){
log__printf(NULL, MOSQ_LOG_DEBUG, "Bridge %s doing local SUBSCRIBE on topic %s", context->id, context->bridge->topics[i].local_topic);
if(sub__add(db, context, context->bridge->topics[i].local_topic, context->bridge->topics[i].qos, &db->subs)) return 1;
}
}
if(context->bridge->notifications){
if(context->bridge->notification_topic){
if(!context->bridge->initial_notification_done){
notification_payload = '0';
db__messages_easy_queue(db, context, context->bridge->notification_topic, 1, 1, ¬ification_payload, 1);
context->bridge->initial_notification_done = true;
}
if (!context->bridge->notifications_local_only) {
notification_payload = '0';
rc = will__set(context, context->bridge->notification_topic, 1, ¬ification_payload, 1, true);
if(rc != MOSQ_ERR_SUCCESS){
return rc;
}
}
}else{
notification_topic_len = strlen(context->bridge->remote_clientid)+strlen("$SYS/broker/connection//state");
notification_topic = mosquitto__malloc(sizeof(char)*(notification_topic_len+1));
if(!notification_topic) return MOSQ_ERR_NOMEM;
snprintf(notification_topic, notification_topic_len+1, "$SYS/broker/connection/%s/state", context->bridge->remote_clientid);
if(!context->bridge->initial_notification_done){
notification_payload = '0';
db__messages_easy_queue(db, context, notification_topic, 1, 1, ¬ification_payload, 1);
context->bridge->initial_notification_done = true;
}
if (!context->bridge->notifications_local_only) {
notification_payload = '0';
rc = will__set(context, notification_topic, 1, ¬ification_payload, 1, true);
mosquitto__free(notification_topic);
if(rc != MOSQ_ERR_SUCCESS){
return rc;
}
}
}
}
log__printf(NULL, MOSQ_LOG_NOTICE, "Connecting bridge %s (%s:%d)", context->bridge->name, context->bridge->addresses[context->bridge->cur_address].address, context->bridge->addresses[context->bridge->cur_address].port);
rc = net__socket_connect(context, context->bridge->addresses[context->bridge->cur_address].address, context->bridge->addresses[context->bridge->cur_address].port, NULL, false);
if(rc > 0){
if(rc == MOSQ_ERR_TLS){
net__socket_close(db, context);
return rc; /* Error already printed */
}else if(rc == MOSQ_ERR_ERRNO){
log__printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", strerror(errno));
}else if(rc == MOSQ_ERR_EAI){
log__printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", gai_strerror(errno));
}
return rc;
}else if(rc == MOSQ_ERR_CONN_PENDING){
context->state = mosq_cs_connect_pending;
}
HASH_ADD(hh_sock, db->contexts_by_sock, sock, sizeof(context->sock), context);
rc2 = send__connect(context, context->keepalive, context->clean_session);
if(rc2 == MOSQ_ERR_SUCCESS){
return rc;
}else if(rc2 == MOSQ_ERR_ERRNO && errno == ENOTCONN){
return MOSQ_ERR_SUCCESS;
}else{
if(rc2 == MOSQ_ERR_TLS){
return rc2; /* Error already printed */
}else if(rc2 == MOSQ_ERR_ERRNO){
log__printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", strerror(errno));
}else if(rc2 == MOSQ_ERR_EAI){
log__printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", gai_strerror(errno));
}
net__socket_close(db, context);
return rc2;
}
}
int log__vprintf(int priority, const char *fmt, va_list va)
{
char *s;
char *st;
int len;
#ifdef WIN32
char *sp;
#endif
const char *topic;
int syslog_priority;
time_t now = time(NULL);
static time_t last_flush = 0;
if((log_priorities & priority) && log_destinations != MQTT3_LOG_NONE){
switch(priority){
case MOSQ_LOG_SUBSCRIBE:
topic = "$SYS/broker/log/M/subscribe";
#ifndef WIN32
syslog_priority = LOG_NOTICE;
#else
syslog_priority = EVENTLOG_INFORMATION_TYPE;
#endif
break;
case MOSQ_LOG_UNSUBSCRIBE:
topic = "$SYS/broker/log/M/unsubscribe";
#ifndef WIN32
syslog_priority = LOG_NOTICE;
#else
syslog_priority = EVENTLOG_INFORMATION_TYPE;
#endif
break;
case MOSQ_LOG_DEBUG:
topic = "$SYS/broker/log/D";
#ifndef WIN32
syslog_priority = LOG_DEBUG;
#else
syslog_priority = EVENTLOG_INFORMATION_TYPE;
#endif
break;
case MOSQ_LOG_ERR:
topic = "$SYS/broker/log/E";
#ifndef WIN32
syslog_priority = LOG_ERR;
#else
syslog_priority = EVENTLOG_ERROR_TYPE;
#endif
break;
case MOSQ_LOG_WARNING:
topic = "$SYS/broker/log/W";
#ifndef WIN32
syslog_priority = LOG_WARNING;
#else
syslog_priority = EVENTLOG_WARNING_TYPE;
#endif
break;
case MOSQ_LOG_NOTICE:
topic = "$SYS/broker/log/N";
#ifndef WIN32
syslog_priority = LOG_NOTICE;
#else
syslog_priority = EVENTLOG_INFORMATION_TYPE;
#endif
break;
case MOSQ_LOG_INFO:
topic = "$SYS/broker/log/I";
#ifndef WIN32
syslog_priority = LOG_INFO;
#else
syslog_priority = EVENTLOG_INFORMATION_TYPE;
#endif
break;
#ifdef WITH_WEBSOCKETS
case MOSQ_LOG_WEBSOCKETS:
topic = "$SYS/broker/log/WS";
#ifndef WIN32
syslog_priority = LOG_DEBUG;
#else
syslog_priority = EVENTLOG_INFORMATION_TYPE;
#endif
break;
#endif
default:
topic = "$SYS/broker/log/E";
#ifndef WIN32
syslog_priority = LOG_ERR;
#else
syslog_priority = EVENTLOG_ERROR_TYPE;
#endif
}
len = strlen(fmt) + 500;
s = mosquitto__malloc(len*sizeof(char));
if(!s) return MOSQ_ERR_NOMEM;
vsnprintf(s, len, fmt, va);
s[len-1] = '\0'; /* Ensure string is null terminated. */
if(log_destinations & MQTT3_LOG_STDOUT){
if(int_db.config && int_db.config->log_timestamp){
fprintf(stdout, "%d: %s\n", (int)now, s);
}else{
fprintf(stdout, "%s\n", s);
}
fflush(stdout);
}
if(log_destinations & MQTT3_LOG_STDERR){
if(int_db.config && int_db.config->log_timestamp){
fprintf(stderr, "%d: %s\n", (int)now, s);
}else{
fprintf(stderr, "%s\n", s);
}
fflush(stderr);
}
if(log_destinations & MQTT3_LOG_FILE && int_db.config->log_fptr){
if(int_db.config && int_db.config->log_timestamp){
fprintf(int_db.config->log_fptr, "%d: %s\n", (int)now, s);
}else{
fprintf(int_db.config->log_fptr, "%s\n", s);
}
if(now - last_flush > 1){
fflush(int_db.config->log_fptr);
last_flush = now;
}
}
if(log_destinations & MQTT3_LOG_SYSLOG){
#ifndef WIN32
syslog(syslog_priority, "%s", s);
#else
sp = (char *)s;
ReportEvent(syslog_h, syslog_priority, 0, 0, NULL, 1, 0, &sp, NULL);
#endif
}
if(log_destinations & MQTT3_LOG_TOPIC && priority != MOSQ_LOG_DEBUG){
if(int_db.config && int_db.config->log_timestamp){
len += 30;
st = mosquitto__malloc(len*sizeof(char));
if(!st){
mosquitto__free(s);
return MOSQ_ERR_NOMEM;
}
snprintf(st, len, "%d: %s", (int)now, s);
db__messages_easy_queue(&int_db, NULL, topic, 2, strlen(st), st, 0);
mosquitto__free(st);
}else{
db__messages_easy_queue(&int_db, NULL, topic, 2, strlen(s), s, 0);
}
}
mosquitto__free(s);
}
return MOSQ_ERR_SUCCESS;
}
