int mosquitto_will_set(struct mosquitto *mosq, const char *topic, int payloadlen, const void *payload, int qos, bool retain) { if(!mosq) return MOSQ_ERR_INVAL; return _mosquitto_will_set(mosq, topic, payloadlen, payload, qos, retain); }
int mqtt3_bridge_connect(struct mosquitto_db *db, struct mosquitto *context) { int rc; 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 = -1; context->last_msg_in = mosquitto_time(); context->last_msg_out = mosquitto_time(); 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; mqtt3_bridge_packet_cleanup(context); mqtt3_db_message_reconnect_reset(context); if(context->clean_session){ mqtt3_db_messages_delete(context); } rc = mosquitto_unpwd_check(db, context->bridge->local_username, context->bridge->local_password); switch(rc){ case MOSQ_ERR_SUCCESS: break; case MOSQ_ERR_AUTH: _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Bridge %s failed authentication on local broker.", context->id); return rc; case MOSQ_ERR_UNKNOWN: _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Bridge %s returned application error in authorisation.", context->id); return rc; default: _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Unknown error in authentication for bridge %s.", context->id); return rc; } /* 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. */ mqtt3_subs_clean_session(db, context, &db->subs); for(i=0; i<context->bridge->topic_count; i++){ if(context->bridge->topics[i].direction == bd_out || context->bridge->topics[i].direction == bd_both){ _mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Bridge %s doing local SUBSCRIBE on topic %s", context->id, context->bridge->topics[i].local_topic); if(mqtt3_sub_add(db, context, context->bridge->topics[i].local_topic, context->bridge->topics[i].qos, &db->subs)) return 1; } } if(context->bridge->notifications){ notification_payload = '0'; if(context->bridge->notification_topic){ mqtt3_db_messages_easy_queue(db, context, context->bridge->notification_topic, 1, 1, ¬ification_payload, 1); rc = _mosquitto_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->id)+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->id); mqtt3_db_messages_easy_queue(db, context, notification_topic, 1, 1, ¬ification_payload, 1); rc = _mosquitto_will_set(context, notification_topic, 1, ¬ification_payload, 1, true); if(rc != MOSQ_ERR_SUCCESS){ _mosquitto_free(notification_topic); return rc; } _mosquitto_free(notification_topic); } } _mosquitto_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 = _mosquitto_socket_connect(context, context->bridge->addresses[context->bridge->cur_address].address, context->bridge->addresses[context->bridge->cur_address].port, NULL, true); if(rc != MOSQ_ERR_SUCCESS){ if(rc == MOSQ_ERR_TLS){ return rc; /* Error already printed */ }else if(rc == MOSQ_ERR_ERRNO){ _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", strerror(errno)); }else if(rc == MOSQ_ERR_EAI){ _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", gai_strerror(errno)); } return rc; } rc = _mosquitto_send_connect(context, context->keepalive, context->clean_session); if(rc == MOSQ_ERR_SUCCESS){ return MOSQ_ERR_SUCCESS; }else if(rc == MOSQ_ERR_ERRNO && errno == ENOTCONN){ return MOSQ_ERR_SUCCESS; }else{ if(rc == MOSQ_ERR_TLS){ return rc; /* Error already printed */ }else if(rc == MOSQ_ERR_ERRNO){ _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", strerror(errno)); }else if(rc == MOSQ_ERR_EAI){ _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", gai_strerror(errno)); } _mosquitto_socket_close(context); return rc; } }
int mqtt3_bridge_connect(struct mosquitto_db *db, struct mosquitto *context) { int rc; 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; mqtt3_bridge_packet_cleanup(context); mqtt3_db_message_reconnect_reset(db, context); if(context->clean_session){ mqtt3_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. */ mqtt3_subs_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){ _mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Bridge %s doing local SUBSCRIBE on topic %s", context->id, context->bridge->topics[i].local_topic); if(mqtt3_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'; mqtt3_db_messages_easy_queue(db, context, context->bridge->notification_topic, 1, 1, ¬ification_payload, 1); context->bridge->initial_notification_done = true; } notification_payload = '0'; rc = _mosquitto_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'; mqtt3_db_messages_easy_queue(db, context, notification_topic, 1, 1, ¬ification_payload, 1); context->bridge->initial_notification_done = true; } notification_payload = '0'; rc = _mosquitto_will_set(context, notification_topic, 1, ¬ification_payload, 1, true); _mosquitto_free(notification_topic); if(rc != MOSQ_ERR_SUCCESS){ return rc; } } } _mosquitto_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 = _mosquitto_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){ _mosquitto_socket_close(db, context); return rc; /* Error already printed */ }else if(rc == MOSQ_ERR_ERRNO){ _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", strerror(errno)); }else if(rc == MOSQ_ERR_EAI){ _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", gai_strerror(errno)); } return rc; } HASH_ADD(hh_sock, db->contexts_by_sock, sock, sizeof(context->sock), context); if(rc == MOSQ_ERR_CONN_PENDING){ context->state = mosq_cs_connect_pending; } rc = _mosquitto_send_connect(context, context->keepalive, context->clean_session); if(rc == MOSQ_ERR_SUCCESS){ return MOSQ_ERR_SUCCESS; }else if(rc == MOSQ_ERR_ERRNO && errno == ENOTCONN){ return MOSQ_ERR_SUCCESS; }else{ if(rc == MOSQ_ERR_TLS){ return rc; /* Error already printed */ }else if(rc == MOSQ_ERR_ERRNO){ _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", strerror(errno)); }else if(rc == MOSQ_ERR_EAI){ _mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", gai_strerror(errno)); } _mosquitto_socket_close(db, context); return rc; } }
int mosquitto_will_set(struct mosquitto *mosq, bool will, const char *topic, uint32_t payloadlen, const uint8_t *payload, int qos, bool retain) { if(!mosq) return MOSQ_ERR_INVAL; return _mosquitto_will_set(mosq, will, topic, payloadlen, payload, qos, retain); }