1133 lines
34 KiB
C
1133 lines
34 KiB
C
// Module for mqtt
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//#include "lua.h"
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#include "lualib.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "auxmods.h"
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#include "lrotable.h"
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#include "c_string.h"
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#include "c_stdlib.h"
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#include "c_types.h"
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#include "mem.h"
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#include "espconn.h"
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#include "mqtt_msg.h"
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static lua_State *gL = NULL;
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#define MQTT_BUF_SIZE 1024
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#define MQTT_DEFAULT_KEEPALIVE 60
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#define MQTT_MAX_CLIENT_LEN 64
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#define MQTT_MAX_USER_LEN 64
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#define MQTT_MAX_PASS_LEN 64
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#define MQTT_SEND_TIMEOUT 5
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typedef enum {
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MQTT_INIT,
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MQTT_CONNECT_SEND,
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MQTT_CONNECT_SENDING,
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MQTT_DATA
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} tConnState;
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typedef struct mqtt_event_data_t
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{
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uint8_t type;
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const char* topic;
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const char* data;
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uint16_t topic_length;
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uint16_t data_length;
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uint16_t data_offset;
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} mqtt_event_data_t;
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typedef struct mqtt_state_t
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{
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uint16_t port;
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int auto_reconnect;
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mqtt_connect_info_t* connect_info;
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uint8_t* in_buffer;
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uint8_t* out_buffer;
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int in_buffer_length;
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int out_buffer_length;
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uint16_t message_length;
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uint16_t message_length_read;
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mqtt_message_t* outbound_message;
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mqtt_connection_t mqtt_connection;
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uint16_t pending_msg_id;
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int pending_msg_type;
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int pending_publish_qos;
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} mqtt_state_t;
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typedef struct lmqtt_userdata
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{
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struct espconn *pesp_conn;
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int self_ref;
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int cb_connect_ref;
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int cb_disconnect_ref;
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int cb_message_ref;
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int cb_suback_ref;
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int cb_puback_ref;
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mqtt_state_t mqtt_state;
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mqtt_connect_info_t connect_info;
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uint32_t keep_alive_tick;
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uint32_t send_timeout;
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uint8_t secure;
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uint8_t connected;
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ETSTimer mqttTimer;
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tConnState connState;
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}lmqtt_userdata;
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static void mqtt_socket_disconnected(void *arg) // tcp only
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{
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NODE_DBG("mqtt_socket_disconnected is called.\n");
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struct espconn *pesp_conn = arg;
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if(pesp_conn == NULL)
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return;
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lmqtt_userdata *mud = (lmqtt_userdata *)pesp_conn->reverse;
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if(mud == NULL)
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return;
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if(mud->cb_disconnect_ref != LUA_NOREF && mud->self_ref != LUA_NOREF)
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{
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->cb_disconnect_ref);
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->self_ref); // pass the userdata(client) to callback func in lua
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lua_call(gL, 1, 0);
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}
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mud->connected = 0;
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os_timer_disarm(&mud->mqttTimer);
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if(pesp_conn->proto.tcp)
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c_free(pesp_conn->proto.tcp);
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pesp_conn->proto.tcp = NULL;
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if(mud->pesp_conn)
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c_free(mud->pesp_conn);
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mud->pesp_conn = NULL; // espconn is already disconnected
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lua_gc(gL, LUA_GCSTOP, 0);
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if(mud->self_ref != LUA_NOREF){
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luaL_unref(gL, LUA_REGISTRYINDEX, mud->self_ref);
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mud->self_ref = LUA_NOREF; // unref this, and the mqtt.socket userdata will delete it self
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}
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lua_gc(gL, LUA_GCRESTART, 0);
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}
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static void mqtt_socket_reconnected(void *arg, sint8_t err)
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{
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NODE_DBG("mqtt_socket_reconnected is called.\n");
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mqtt_socket_disconnected(arg);
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}
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static void deliver_publish(lmqtt_userdata * mud, uint8_t* message, int length)
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{
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const char comma[] = ",";
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mqtt_event_data_t event_data;
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event_data.topic_length = length;
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event_data.topic = mqtt_get_publish_topic(message, &event_data.topic_length);
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event_data.data_length = length;
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event_data.data = mqtt_get_publish_data(message, &event_data.data_length);
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if(mud->cb_message_ref == LUA_NOREF)
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return;
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if(mud->self_ref == LUA_NOREF)
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return;
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->cb_message_ref);
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->self_ref); // pass the userdata to callback func in lua
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// expose_array(gL, pdata, len);
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// *(pdata+len) = 0;
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// NODE_DBG(pdata);
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// NODE_DBG("\n");
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lua_pushlstring(gL, event_data.topic, event_data.topic_length);
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if(event_data.data_length > 0){
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lua_pushlstring(gL, event_data.data, event_data.data_length);
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lua_call(gL, 3, 0);
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} else {
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lua_call(gL, 2, 0);
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}
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}
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static void mqtt_socket_received(void *arg, char *pdata, unsigned short len)
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{
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NODE_DBG("mqtt_socket_received is called.\n");
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uint8_t msg_type;
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uint8_t msg_qos;
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uint16_t msg_id;
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struct espconn *pesp_conn = arg;
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if(pesp_conn == NULL)
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return;
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lmqtt_userdata *mud = (lmqtt_userdata *)pesp_conn->reverse;
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if(mud == NULL)
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return;
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READPACKET:
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if(len > MQTT_BUF_SIZE && len <= 0)
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return;
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c_memcpy(mud->mqtt_state.in_buffer, pdata, len);
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mud->mqtt_state.outbound_message = NULL;
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switch(mud->connState){
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case MQTT_CONNECT_SENDING:
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if(mqtt_get_type(mud->mqtt_state.in_buffer) != MQTT_MSG_TYPE_CONNACK){
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NODE_DBG("MQTT: Invalid packet\r\n");
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mud->connState = MQTT_INIT;
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if(mud->secure){
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espconn_secure_disconnect(pesp_conn);
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}
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else {
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espconn_disconnect(pesp_conn);
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}
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} else {
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mud->connState = MQTT_DATA;
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NODE_DBG("MQTT: Connected\r\n");
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if(mud->cb_connect_ref == LUA_NOREF)
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return;
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if(mud->self_ref == LUA_NOREF)
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return;
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->cb_connect_ref);
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->self_ref); // pass the userdata(client) to callback func in lua
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lua_call(gL, 1, 0);
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return;
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}
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break;
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case MQTT_DATA:
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mud->mqtt_state.message_length_read = len;
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mud->mqtt_state.message_length = mqtt_get_total_length(mud->mqtt_state.in_buffer, mud->mqtt_state.message_length_read);
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msg_type = mqtt_get_type(mud->mqtt_state.in_buffer);
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msg_qos = mqtt_get_qos(mud->mqtt_state.in_buffer);
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msg_id = mqtt_get_id(mud->mqtt_state.in_buffer, mud->mqtt_state.in_buffer_length);
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NODE_DBG("MQTT_DATA: type: %d, qos: %d, msg_id: %d, pending_id: %d\r\n",
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msg_type,
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msg_qos,
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msg_id,
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mud->mqtt_state.pending_msg_id);
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switch(msg_type)
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{
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case MQTT_MSG_TYPE_SUBACK:
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if(mud->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_SUBSCRIBE && mud->mqtt_state.pending_msg_id == msg_id)
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NODE_DBG("MQTT: Subscribe successful\r\n");
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if (mud->cb_suback_ref == LUA_NOREF)
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break;
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if (mud->self_ref == LUA_NOREF)
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break;
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->cb_suback_ref);
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->self_ref);
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lua_call(gL, 1, 0);
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break;
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case MQTT_MSG_TYPE_UNSUBACK:
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if(mud->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_UNSUBSCRIBE && mud->mqtt_state.pending_msg_id == msg_id)
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NODE_DBG("MQTT: UnSubscribe successful\r\n");
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break;
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case MQTT_MSG_TYPE_PUBLISH:
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if(msg_qos == 1)
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mud->mqtt_state.outbound_message = mqtt_msg_puback(&mud->mqtt_state.mqtt_connection, msg_id);
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else if(msg_qos == 2)
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mud->mqtt_state.outbound_message = mqtt_msg_pubrec(&mud->mqtt_state.mqtt_connection, msg_id);
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deliver_publish(mud, mud->mqtt_state.in_buffer, mud->mqtt_state.message_length_read);
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break;
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case MQTT_MSG_TYPE_PUBACK:
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if(mud->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && mud->mqtt_state.pending_msg_id == msg_id){
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NODE_DBG("MQTT: Publish with QoS = 1 successful\r\n");
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if(mud->cb_puback_ref == LUA_NOREF)
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break;
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if(mud->self_ref == LUA_NOREF)
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break;
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->cb_puback_ref);
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->self_ref); // pass the userdata to callback func in lua
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lua_call(gL, 1, 0);
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}
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break;
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case MQTT_MSG_TYPE_PUBREC:
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mud->mqtt_state.outbound_message = mqtt_msg_pubrel(&mud->mqtt_state.mqtt_connection, msg_id);
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NODE_DBG("MQTT: Response PUBREL\r\n");
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break;
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case MQTT_MSG_TYPE_PUBREL:
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mud->mqtt_state.outbound_message = mqtt_msg_pubcomp(&mud->mqtt_state.mqtt_connection, msg_id);
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NODE_DBG("MQTT: Response PUBCOMP\r\n");
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break;
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case MQTT_MSG_TYPE_PUBCOMP:
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if(mud->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && mud->mqtt_state.pending_msg_id == msg_id){
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NODE_DBG("MQTT: Publish with QoS = 2 successful\r\n");
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if(mud->cb_puback_ref == LUA_NOREF)
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break;
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if(mud->self_ref == LUA_NOREF)
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break;
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->cb_puback_ref);
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->self_ref); // pass the userdata to callback func in lua
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lua_call(gL, 1, 0);
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}
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break;
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case MQTT_MSG_TYPE_PINGREQ:
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mud->mqtt_state.outbound_message = mqtt_msg_pingresp(&mud->mqtt_state.mqtt_connection);
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break;
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case MQTT_MSG_TYPE_PINGRESP:
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// Ignore
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break;
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}
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// NOTE: this is done down here and not in the switch case above
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// because the PSOCK_READBUF_LEN() won't work inside a switch
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// statement due to the way protothreads resume.
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if(msg_type == MQTT_MSG_TYPE_PUBLISH)
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{
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len = mud->mqtt_state.message_length_read;
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if(mud->mqtt_state.message_length < mud->mqtt_state.message_length_read)
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{
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len -= mud->mqtt_state.message_length;
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pdata += mud->mqtt_state.message_length;
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NODE_DBG("Get another published message\r\n");
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goto READPACKET;
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}
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}
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break;
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}
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if(mud->mqtt_state.outbound_message != NULL){
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if(mud->secure)
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espconn_secure_sent(pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length);
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else
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espconn_sent(pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length);
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mud->mqtt_state.outbound_message = NULL;
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}
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return;
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}
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static void mqtt_socket_sent(void *arg)
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{
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// NODE_DBG("mqtt_socket_sent is called.\n");
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struct espconn *pesp_conn = arg;
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if(pesp_conn == NULL)
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return;
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lmqtt_userdata *mud = (lmqtt_userdata *)pesp_conn->reverse;
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if(mud == NULL)
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return;
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if(!mud->connected)
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return;
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// call mqtt_sent()
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mud->send_timeout = 0;
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if(mud->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && mud->mqtt_state.pending_publish_qos == 0) {
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if(mud->cb_puback_ref == LUA_NOREF)
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return;
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if(mud->self_ref == LUA_NOREF)
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return;
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->cb_puback_ref);
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lua_rawgeti(gL, LUA_REGISTRYINDEX, mud->self_ref); // pass the userdata to callback func in lua
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lua_call(gL, 1, 0);
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}
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}
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static int mqtt_socket_client( lua_State* L );
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static void mqtt_socket_connected(void *arg)
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{
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NODE_DBG("mqtt_socket_connected is called.\n");
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struct espconn *pesp_conn = arg;
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if(pesp_conn == NULL)
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return;
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lmqtt_userdata *mud = (lmqtt_userdata *)pesp_conn->reverse;
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if(mud == NULL)
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return;
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mud->connected = true;
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espconn_regist_recvcb(pesp_conn, mqtt_socket_received);
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espconn_regist_sentcb(pesp_conn, mqtt_socket_sent);
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espconn_regist_disconcb(pesp_conn, mqtt_socket_disconnected);
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// call mqtt_connect() to start a mqtt connect stage.
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mqtt_msg_init(&mud->mqtt_state.mqtt_connection, mud->mqtt_state.out_buffer, mud->mqtt_state.out_buffer_length);
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mud->mqtt_state.outbound_message = mqtt_msg_connect(&mud->mqtt_state.mqtt_connection, mud->mqtt_state.connect_info);
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NODE_DBG("Send MQTT connection infomation, data len: %d, d[0]=%d \r\n", mud->mqtt_state.outbound_message->length, mud->mqtt_state.outbound_message->data[0]);
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if(mud->secure){
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espconn_secure_sent(pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length);
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}
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else
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{
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espconn_sent(pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length);
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}
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mud->mqtt_state.outbound_message = NULL;
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mud->connState = MQTT_CONNECT_SENDING;
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return;
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}
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void mqtt_socket_timer(void *arg)
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{
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lmqtt_userdata *mud = (lmqtt_userdata*) arg;
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if(mud->connState == MQTT_DATA){
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mud->keep_alive_tick ++;
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if(mud->keep_alive_tick > mud->mqtt_state.connect_info->keepalive){
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mud->mqtt_state.pending_msg_type = MQTT_MSG_TYPE_PINGREQ;
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mud->send_timeout = MQTT_SEND_TIMEOUT;
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NODE_DBG("\r\nMQTT: Send keepalive packet\r\n");
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mud->mqtt_state.outbound_message = mqtt_msg_pingreq(&mud->mqtt_state.mqtt_connection);
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if(mud->secure)
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espconn_secure_sent(mud->pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length);
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else
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espconn_sent(mud->pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length);
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mud->keep_alive_tick = 0;
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}
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}
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if(mud->send_timeout > 0)
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mud->send_timeout --;
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}
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// Lua: mqtt.Client(clientid, keepalive, user, pass)
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static int mqtt_socket_client( lua_State* L )
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{
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NODE_DBG("mqtt_socket_client is called.\n");
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lmqtt_userdata *mud;
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char tempid[20] = {0};
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c_sprintf(tempid, "%s%x", "NodeMCU_", system_get_chip_id() );
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NODE_DBG(tempid);
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NODE_DBG("\n");
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size_t il = c_strlen(tempid);
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const char *clientId = tempid, *username = NULL, *password = NULL;
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int stack = 1;
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unsigned secure = 0;
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int top = lua_gettop(L);
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// create a object
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mud = (lmqtt_userdata *)lua_newuserdata(L, sizeof(lmqtt_userdata));
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// pre-initialize it, in case of errors
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mud->self_ref = LUA_NOREF;
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mud->cb_connect_ref = LUA_NOREF;
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mud->cb_disconnect_ref = LUA_NOREF;
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mud->cb_message_ref = LUA_NOREF;
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mud->cb_suback_ref = LUA_NOREF;
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mud->cb_puback_ref = LUA_NOREF;
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mud->pesp_conn = NULL;
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mud->secure = 0;
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mud->keep_alive_tick = 0;
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mud->send_timeout = 0;
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mud->connState = MQTT_INIT;
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c_memset(&mud->mqttTimer, 0, sizeof(ETSTimer));
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c_memset(&mud->mqtt_state, 0, sizeof(mqtt_state_t));
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c_memset(&mud->connect_info, 0, sizeof(mqtt_connect_info_t));
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// set its metatable
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luaL_getmetatable(L, "mqtt.socket");
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lua_setmetatable(L, -2);
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if( lua_isstring(L,stack) ) // deal with the clientid string
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{
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clientId = luaL_checklstring( L, stack, &il );
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stack++;
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}
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// TODO: check the zalloc result.
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mud->connect_info.client_id = (uint8_t *)c_zalloc(il+1);
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if(!mud->connect_info.client_id){
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return luaL_error(L, "not enough memory");
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}
|
|
c_memcpy(mud->connect_info.client_id, clientId, il);
|
|
mud->connect_info.client_id[il] = 0;
|
|
|
|
mud->mqtt_state.in_buffer = (uint8_t *)c_zalloc(MQTT_BUF_SIZE);
|
|
if(!mud->mqtt_state.in_buffer){
|
|
return luaL_error(L, "not enough memory");
|
|
}
|
|
|
|
mud->mqtt_state.out_buffer = (uint8_t *)c_zalloc(MQTT_BUF_SIZE);
|
|
if(!mud->mqtt_state.out_buffer){
|
|
return luaL_error(L, "not enough memory");
|
|
}
|
|
|
|
mud->mqtt_state.in_buffer_length = MQTT_BUF_SIZE;
|
|
mud->mqtt_state.out_buffer_length = MQTT_BUF_SIZE;
|
|
|
|
mud->connState = MQTT_INIT;
|
|
mud->connect_info.clean_session = 1;
|
|
mud->connect_info.will_qos = 0;
|
|
mud->connect_info.will_retain = 0;
|
|
mud->keep_alive_tick = 0;
|
|
mud->connect_info.keepalive = 0;
|
|
mud->mqtt_state.connect_info = &mud->connect_info;
|
|
|
|
gL = L; // global L for mqtt module.
|
|
|
|
if(lua_isnumber( L, stack ))
|
|
{
|
|
mud->connect_info.keepalive = luaL_checkinteger( L, stack);
|
|
stack++;
|
|
}
|
|
|
|
if(mud->connect_info.keepalive == 0){
|
|
mud->connect_info.keepalive = MQTT_DEFAULT_KEEPALIVE;
|
|
return 1;
|
|
}
|
|
|
|
if(lua_isstring( L, stack )){
|
|
username = luaL_checklstring( L, stack, &il );
|
|
stack++;
|
|
}
|
|
if(username == NULL)
|
|
il = 0;
|
|
NODE_DBG("lengh username: %d\r\n", il);
|
|
mud->connect_info.username = (uint8_t *)c_zalloc(il + 1);
|
|
if(!mud->connect_info.username){
|
|
return luaL_error(L, "not enough memory");
|
|
}
|
|
|
|
c_memcpy(mud->connect_info.username, username, il);
|
|
mud->connect_info.username[il] = 0;
|
|
|
|
if(lua_isstring( L, stack )){
|
|
password = luaL_checklstring( L, stack, &il );
|
|
stack++;
|
|
}
|
|
if(password == NULL)
|
|
il = 0;
|
|
NODE_DBG("lengh password: %d\r\n", il);
|
|
|
|
mud->connect_info.password = (uint8_t *)c_zalloc(il + 1);
|
|
if(!mud->connect_info.password){
|
|
return luaL_error(L, "not enough memory");
|
|
}
|
|
|
|
c_memcpy(mud->connect_info.password, password, il);
|
|
mud->connect_info.password[il] = 0;
|
|
|
|
NODE_DBG("MQTT: Init info: %s, %s, %s\r\n", mud->connect_info.client_id, mud->connect_info.username, mud->connect_info.password);
|
|
|
|
return 1;
|
|
}
|
|
|
|
// Lua: mqtt.delete( socket )
|
|
// call close() first
|
|
// socket: unref everything
|
|
static int mqtt_delete( lua_State* L )
|
|
{
|
|
NODE_DBG("mqtt_delete is called.\n");
|
|
|
|
lmqtt_userdata *mud = (lmqtt_userdata *)luaL_checkudata(L, 1, "mqtt.socket");
|
|
luaL_argcheck(L, mud, 1, "mqtt.socket expected");
|
|
if(mud==NULL){
|
|
NODE_DBG("userdata is nil.\n");
|
|
return 0;
|
|
}
|
|
|
|
os_timer_disarm(&mud->mqttTimer);
|
|
mud->connected = 0;
|
|
if(mud->pesp_conn){ // for client connected to tcp server, this should set NULL in disconnect cb
|
|
mud->pesp_conn->reverse = NULL;
|
|
if(mud->pesp_conn->proto.tcp)
|
|
c_free(mud->pesp_conn->proto.tcp);
|
|
mud->pesp_conn->proto.tcp = NULL;
|
|
c_free(mud->pesp_conn);
|
|
mud->pesp_conn = NULL; // for socket, it will free this when disconnected
|
|
}
|
|
|
|
if(mud->connect_info.will_topic){
|
|
c_free(mud->connect_info.will_topic);
|
|
mud->connect_info.will_topic = NULL;
|
|
}
|
|
|
|
if(mud->connect_info.will_message){
|
|
c_free(mud->connect_info.will_message);
|
|
mud->connect_info.will_message = NULL;
|
|
}
|
|
|
|
if(mud->connect_info.client_id){
|
|
c_free(mud->connect_info.client_id);
|
|
mud->connect_info.client_id = NULL;
|
|
}
|
|
if(mud->connect_info.username){
|
|
c_free(mud->connect_info.username);
|
|
mud->connect_info.username = NULL;
|
|
}
|
|
if(mud->connect_info.password){
|
|
c_free(mud->connect_info.password);
|
|
mud->connect_info.password = NULL;
|
|
}
|
|
if(mud->mqtt_state.in_buffer){
|
|
c_free(mud->mqtt_state.in_buffer);
|
|
mud->mqtt_state.in_buffer = NULL;
|
|
}
|
|
if(mud->mqtt_state.out_buffer){
|
|
c_free(mud->mqtt_state.out_buffer);
|
|
mud->mqtt_state.out_buffer = NULL;
|
|
}
|
|
|
|
// free (unref) callback ref
|
|
if(LUA_NOREF!=mud->cb_connect_ref){
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_ref);
|
|
mud->cb_connect_ref = LUA_NOREF;
|
|
}
|
|
if(LUA_NOREF!=mud->cb_disconnect_ref){
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_disconnect_ref);
|
|
mud->cb_disconnect_ref = LUA_NOREF;
|
|
}
|
|
if(LUA_NOREF!=mud->cb_message_ref){
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_message_ref);
|
|
mud->cb_message_ref = LUA_NOREF;
|
|
}
|
|
if(LUA_NOREF!=mud->cb_suback_ref){
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_suback_ref);
|
|
mud->cb_suback_ref = LUA_NOREF;
|
|
}
|
|
if(LUA_NOREF!=mud->cb_puback_ref){
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_puback_ref);
|
|
mud->cb_puback_ref = LUA_NOREF;
|
|
}
|
|
lua_gc(gL, LUA_GCSTOP, 0);
|
|
if(LUA_NOREF!=mud->self_ref){
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->self_ref);
|
|
mud->self_ref = LUA_NOREF;
|
|
}
|
|
lua_gc(gL, LUA_GCRESTART, 0);
|
|
return 0;
|
|
}
|
|
|
|
static void socket_connect(struct espconn *pesp_conn)
|
|
{
|
|
if(pesp_conn == NULL)
|
|
return;
|
|
lmqtt_userdata *mud = (lmqtt_userdata *)pesp_conn->reverse;
|
|
if(mud == NULL)
|
|
return;
|
|
|
|
if(mud->secure){
|
|
espconn_secure_connect(pesp_conn);
|
|
}
|
|
else
|
|
{
|
|
espconn_connect(pesp_conn);
|
|
}
|
|
|
|
NODE_DBG("socket_connect is called.\n");
|
|
}
|
|
|
|
static void socket_dns_found(const char *name, ip_addr_t *ipaddr, void *arg);
|
|
static dns_reconn_count = 0;
|
|
static ip_addr_t host_ip; // for dns
|
|
static void socket_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
|
|
{
|
|
NODE_DBG("socket_dns_found is called.\n");
|
|
struct espconn *pesp_conn = arg;
|
|
if(pesp_conn == NULL){
|
|
NODE_DBG("pesp_conn null.\n");
|
|
return;
|
|
}
|
|
|
|
if(ipaddr == NULL)
|
|
{
|
|
dns_reconn_count++;
|
|
if( dns_reconn_count >= 5 ){
|
|
NODE_ERR( "DNS Fail!\n" );
|
|
// Note: should delete the pesp_conn or unref self_ref here.
|
|
mqtt_socket_disconnected(arg); // although not connected, but fire disconnect callback to release every thing.
|
|
return;
|
|
}
|
|
NODE_ERR( "DNS retry %d!\n", dns_reconn_count );
|
|
host_ip.addr = 0;
|
|
espconn_gethostbyname(pesp_conn, name, &host_ip, socket_dns_found);
|
|
return;
|
|
}
|
|
|
|
// ipaddr->addr is a uint32_t ip
|
|
if(ipaddr->addr != 0)
|
|
{
|
|
dns_reconn_count = 0;
|
|
c_memcpy(pesp_conn->proto.tcp->remote_ip, &(ipaddr->addr), 4);
|
|
NODE_DBG("TCP ip is set: ");
|
|
NODE_DBG(IPSTR, IP2STR(&(ipaddr->addr)));
|
|
NODE_DBG("\n");
|
|
socket_connect(pesp_conn);
|
|
}
|
|
}
|
|
|
|
// Lua: mqtt:connect( host, port, secure, function(client) )
|
|
static int mqtt_socket_lwt( lua_State* L )
|
|
{
|
|
uint8_t stack = 1;
|
|
size_t topicSize, il;
|
|
NODE_DBG("mqtt_socket_lwt.\n");
|
|
lmqtt_userdata *mud = NULL;
|
|
const char *lwtTopic, *lwtMsg;
|
|
uint8_t lwtQoS, lwtRetain;
|
|
|
|
mud = (lmqtt_userdata *)luaL_checkudata( L, stack, "mqtt.socket" );
|
|
luaL_argcheck( L, mud, stack, "mqtt.socket expected" );
|
|
|
|
if(mud == NULL)
|
|
return 0;
|
|
|
|
stack++;
|
|
lwtTopic = luaL_checklstring( L, stack, &topicSize );
|
|
if (lwtTopic == NULL)
|
|
{
|
|
return luaL_error( L, "need lwt topic");
|
|
}
|
|
|
|
stack++;
|
|
lwtMsg = luaL_checklstring( L, stack, &il );
|
|
if (lwtMsg == NULL)
|
|
{
|
|
return luaL_error( L, "need lwt message");
|
|
}
|
|
|
|
mud->connect_info.will_topic = (uint8_t*) c_zalloc( topicSize + 1 );
|
|
if(!mud->connect_info.will_topic){
|
|
return luaL_error( L, "not enough memory");
|
|
}
|
|
c_memcpy(mud->connect_info.will_topic, lwtTopic, topicSize);
|
|
mud->connect_info.will_topic[topicSize] = 0;
|
|
|
|
mud->connect_info.will_message = (uint8_t*) c_zalloc( il + 1 );
|
|
if(!mud->connect_info.will_message){
|
|
return luaL_error( L, "not enough memory");
|
|
}
|
|
c_memcpy(mud->connect_info.will_message, lwtMsg, il);
|
|
mud->connect_info.will_message[il] = 0;
|
|
|
|
|
|
stack++;
|
|
mud->connect_info.will_qos = luaL_checkinteger( L, stack );
|
|
|
|
stack++;
|
|
mud->connect_info.will_retain = luaL_checkinteger( L, stack );
|
|
|
|
NODE_DBG("mqtt_socket_lwt: topic: %s, message: %s, qos: %d, retain: %d\n",
|
|
mud->connect_info.will_topic,
|
|
mud->connect_info.will_message,
|
|
mud->connect_info.will_qos,
|
|
mud->connect_info.will_retain);
|
|
return 0;
|
|
}
|
|
|
|
// Lua: mqtt:connect( host, port, secure, function(client) )
|
|
static int mqtt_socket_connect( lua_State* L )
|
|
{
|
|
NODE_DBG("mqtt_socket_connect is called.\n");
|
|
lmqtt_userdata *mud = NULL;
|
|
unsigned port = 1883;
|
|
size_t il;
|
|
ip_addr_t ipaddr;
|
|
const char *domain;
|
|
int stack = 1;
|
|
unsigned secure = 0;
|
|
int top = lua_gettop(L);
|
|
|
|
mud = (lmqtt_userdata *)luaL_checkudata(L, stack, "mqtt.socket");
|
|
luaL_argcheck(L, mud, stack, "mqtt.socket expected");
|
|
stack++;
|
|
if(mud == NULL)
|
|
return 0;
|
|
|
|
if(mud->pesp_conn){ //TODO: should I free tcp struct directly or ask user to call close()???
|
|
mud->pesp_conn->reverse = NULL;
|
|
if(mud->pesp_conn->proto.tcp)
|
|
c_free(mud->pesp_conn->proto.tcp);
|
|
mud->pesp_conn->proto.tcp = NULL;
|
|
c_free(mud->pesp_conn);
|
|
mud->pesp_conn = NULL;
|
|
}
|
|
|
|
struct espconn *pesp_conn = NULL;
|
|
pesp_conn = mud->pesp_conn = (struct espconn *)c_zalloc(sizeof(struct espconn));
|
|
if(!pesp_conn)
|
|
return luaL_error(L, "not enough memory");
|
|
|
|
pesp_conn->proto.udp = NULL;
|
|
pesp_conn->proto.tcp = (esp_tcp *)c_zalloc(sizeof(esp_tcp));
|
|
if(!pesp_conn->proto.tcp){
|
|
c_free(pesp_conn);
|
|
pesp_conn = mud->pesp_conn = NULL;
|
|
return luaL_error(L, "not enough memory");
|
|
}
|
|
// reverse is for the callback function
|
|
pesp_conn->reverse = mud;
|
|
pesp_conn->type = ESPCONN_TCP;
|
|
pesp_conn->state = ESPCONN_NONE;
|
|
mud->connected = 0;
|
|
|
|
if( (stack<=top) && lua_isstring(L,stack) ) // deal with the domain string
|
|
{
|
|
domain = luaL_checklstring( L, stack, &il );
|
|
|
|
stack++;
|
|
if (domain == NULL)
|
|
{
|
|
domain = "127.0.0.1";
|
|
}
|
|
ipaddr.addr = ipaddr_addr(domain);
|
|
c_memcpy(pesp_conn->proto.tcp->remote_ip, &ipaddr.addr, 4);
|
|
NODE_DBG("TCP ip is set: ");
|
|
NODE_DBG(IPSTR, IP2STR(&ipaddr.addr));
|
|
NODE_DBG("\n");
|
|
}
|
|
|
|
if ( (stack<=top) && lua_isnumber(L, stack) )
|
|
{
|
|
port = lua_tointeger(L, stack);
|
|
stack++;
|
|
NODE_DBG("TCP port is set: %d.\n", port);
|
|
}
|
|
pesp_conn->proto.tcp->remote_port = port;
|
|
pesp_conn->proto.tcp->local_port = espconn_port();
|
|
|
|
if ( (stack<=top) && lua_isnumber(L, stack) )
|
|
{
|
|
secure = lua_tointeger(L, stack);
|
|
stack++;
|
|
if ( secure != 0 && secure != 1 ){
|
|
secure = 0; // default to 0
|
|
}
|
|
} else {
|
|
secure = 0; // default to 0
|
|
}
|
|
mud->secure = secure; // save
|
|
|
|
// call back function when a connection is obtained, tcp only
|
|
if ((stack<=top) && (lua_type(L, stack) == LUA_TFUNCTION || lua_type(L, stack) == LUA_TLIGHTFUNCTION)){
|
|
lua_pushvalue(L, stack); // copy argument (func) to the top of stack
|
|
if(mud->cb_connect_ref != LUA_NOREF)
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_ref);
|
|
mud->cb_connect_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
stack++;
|
|
}
|
|
|
|
lua_pushvalue(L, 1); // copy userdata to the top of stack
|
|
if(mud->self_ref != LUA_NOREF)
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->self_ref);
|
|
mud->self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
|
|
espconn_regist_connectcb(pesp_conn, mqtt_socket_connected);
|
|
espconn_regist_reconcb(pesp_conn, mqtt_socket_reconnected);
|
|
|
|
if((ipaddr.addr == IPADDR_NONE) && (c_memcmp(domain,"255.255.255.255",16) != 0))
|
|
{
|
|
host_ip.addr = 0;
|
|
dns_reconn_count = 0;
|
|
if(ESPCONN_OK == espconn_gethostbyname(pesp_conn, domain, &host_ip, socket_dns_found)){
|
|
socket_dns_found(domain, &host_ip, pesp_conn); // ip is returned in host_ip.
|
|
}
|
|
}
|
|
else
|
|
{
|
|
socket_connect(pesp_conn);
|
|
}
|
|
|
|
os_timer_disarm(&mud->mqttTimer);
|
|
os_timer_setfn(&mud->mqttTimer, (os_timer_func_t *)mqtt_socket_timer, mud);
|
|
os_timer_arm(&mud->mqttTimer, 1000, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
// Lua: mqtt:close()
|
|
// client disconnect and unref itself
|
|
static int mqtt_socket_close( lua_State* L )
|
|
{
|
|
NODE_DBG("mqtt_socket_close is called.\n");
|
|
int i = 0;
|
|
lmqtt_userdata *mud = NULL;
|
|
|
|
mud = (lmqtt_userdata *)luaL_checkudata(L, 1, "mqtt.socket");
|
|
luaL_argcheck(L, mud, 1, "mqtt.socket expected");
|
|
if(mud == NULL)
|
|
return 0;
|
|
|
|
if(mud->pesp_conn == NULL)
|
|
return 0;
|
|
|
|
// call mqtt_disconnect()
|
|
|
|
if(mud->secure){
|
|
if(mud->pesp_conn->proto.tcp->remote_port || mud->pesp_conn->proto.tcp->local_port)
|
|
espconn_secure_disconnect(mud->pesp_conn);
|
|
}
|
|
else
|
|
{
|
|
if(mud->pesp_conn->proto.tcp->remote_port || mud->pesp_conn->proto.tcp->local_port)
|
|
espconn_disconnect(mud->pesp_conn);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: mqtt:on( "method", function() )
|
|
static int mqtt_socket_on( lua_State* L )
|
|
{
|
|
NODE_DBG("mqtt_on is called.\n");
|
|
lmqtt_userdata *mud;
|
|
size_t sl;
|
|
|
|
mud = (lmqtt_userdata *)luaL_checkudata(L, 1, "mqtt.socket");
|
|
luaL_argcheck(L, mud, 1, "mqtt.socket expected");
|
|
if(mud==NULL){
|
|
NODE_DBG("userdata is nil.\n");
|
|
return 0;
|
|
}
|
|
|
|
const char *method = luaL_checklstring( L, 2, &sl );
|
|
if (method == NULL)
|
|
return luaL_error( L, "wrong arg type" );
|
|
|
|
luaL_checkanyfunction(L, 3);
|
|
lua_pushvalue(L, 3); // copy argument (func) to the top of stack
|
|
|
|
if( sl == 7 && c_strcmp(method, "connect") == 0){
|
|
if(mud->cb_connect_ref != LUA_NOREF)
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_ref);
|
|
mud->cb_connect_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}else if( sl == 7 && c_strcmp(method, "offline") == 0){
|
|
if(mud->cb_disconnect_ref != LUA_NOREF)
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_disconnect_ref);
|
|
mud->cb_disconnect_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}else if( sl == 7 && c_strcmp(method, "message") == 0){
|
|
if(mud->cb_message_ref != LUA_NOREF)
|
|
luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_message_ref);
|
|
mud->cb_message_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}else{
|
|
lua_pop(L, 1);
|
|
return luaL_error( L, "method not supported" );
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// Lua: mqtt:subscribe(topic, qos, function())
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static int mqtt_socket_subscribe( lua_State* L ) {
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NODE_DBG("mqtt_socket_subscribe is called.\n");
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typedef struct SUB_STORAGE {
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uint32_t length;
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uint8_t *data;
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struct SUB_STORAGE *next;
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} SUB_STORAGE;
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uint8_t stack = 1, qos = 0;
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const char *topic;
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size_t il;
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lmqtt_userdata *mud;
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mud = (lmqtt_userdata *) luaL_checkudata( L, stack, "mqtt.socket" );
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luaL_argcheck( L, mud, stack, "mqtt.socket expected" );
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stack++;
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if( mud->send_timeout != 0 )
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return luaL_error( L, "sending in process" );
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if( !mud->connected )
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return luaL_error( L, "not connected" );
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if( lua_istable( L, stack ) ) {
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NODE_DBG("subscribe table\n");
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lua_pushnil( L ); /* first key */
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SUB_STORAGE *first, *last, *curr;
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first = (SUB_STORAGE*) c_zalloc(sizeof(SUB_STORAGE));
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if( first == NULL )
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return luaL_error( L, "not enough memory" );
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first->length = 0;
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last = first;
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first->next = NULL;
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while( lua_next( L, stack ) != 0 ) {
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curr = (SUB_STORAGE*) c_zalloc(sizeof(SUB_STORAGE));
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if( curr == NULL )
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return luaL_error( L, "not enough memory" );
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topic = luaL_checkstring( L, -2 );
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qos = luaL_checkinteger( L, -1 );
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mud->mqtt_state.outbound_message = mqtt_msg_subscribe( &mud->mqtt_state.mqtt_connection, topic, qos, &mud->mqtt_state.pending_msg_id );
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NODE_DBG("topic: %s - qos: %d, length: %d\n", topic, qos, mud->mqtt_state.outbound_message->length);
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curr->data = (uint8_t*) c_zalloc(mud->mqtt_state.outbound_message->length);
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if( curr->data == NULL )
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return luaL_error( L, "not enough memory" );
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c_memcpy( curr->data, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length );
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curr->length = mud->mqtt_state.outbound_message->length;
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curr->next = NULL;
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last->next = curr;
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last = curr;
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lua_pop( L, 1 );
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}
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curr = first;
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uint32_t ptr = 0;
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while( curr != NULL ) {
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if( curr->length == 0 ) {
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curr = curr->next;
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continue;
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}
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if( ptr + curr->length < mud->mqtt_state.out_buffer_length ) {
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c_memcpy( mud->mqtt_state.out_buffer + ptr, curr->data, curr->length );
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ptr += curr->length;
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}
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c_free(curr->data);
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c_free(curr);
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curr = curr->next;
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}
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c_free(first);
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if( ptr == 0 ) {
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return luaL_error( L, "invalid data" );
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}
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mud->mqtt_state.outbound_message->data = mud->mqtt_state.out_buffer;
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mud->mqtt_state.outbound_message->length = ptr;
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stack++;
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} else {
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NODE_DBG("subscribe string\n");
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topic = luaL_checklstring( L, stack, &il );
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stack++;
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if( topic == NULL )
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return luaL_error( L, "need topic name" );
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qos = luaL_checkinteger( L, stack );
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mud->mqtt_state.outbound_message = mqtt_msg_subscribe( &mud->mqtt_state.mqtt_connection, topic, qos, &mud->mqtt_state.pending_msg_id );
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stack++;
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}
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mud->send_timeout = MQTT_SEND_TIMEOUT;
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mud->mqtt_state.pending_msg_type = MQTT_MSG_TYPE_SUBSCRIBE;
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mud->mqtt_state.pending_publish_qos = mqtt_get_qos( mud->mqtt_state.outbound_message->data );
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if( lua_type( L, stack ) == LUA_TFUNCTION || lua_type( L, stack ) == LUA_TLIGHTFUNCTION ) {
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lua_pushvalue( L, stack ); // copy argument (func) to the top of stack
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if( mud->cb_suback_ref != LUA_NOREF )
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luaL_unref( L, LUA_REGISTRYINDEX, mud->cb_suback_ref );
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mud->cb_suback_ref = luaL_ref( L, LUA_REGISTRYINDEX );
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}
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NODE_DBG("Sent: %d\n", mud->mqtt_state.outbound_message->length);
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if( mud->secure )
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espconn_secure_sent( mud->pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length );
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else
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espconn_sent( mud->pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length );
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return 0;
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}
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// Lua: mqtt:publish( topic, payload, qos, retain, function() )
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static int mqtt_socket_publish( lua_State* L )
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{
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// NODE_DBG("mqtt_publish is called.\n");
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struct espconn *pesp_conn = NULL;
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lmqtt_userdata *mud;
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size_t l;
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uint8_t stack = 1;
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mud = (lmqtt_userdata *)luaL_checkudata(L, stack, "mqtt.socket");
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luaL_argcheck(L, mud, stack, "mqtt.socket expected");
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stack++;
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if(mud==NULL){
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NODE_DBG("userdata is nil.\n");
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return 0;
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}
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if(mud->pesp_conn == NULL){
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NODE_DBG("mud->pesp_conn is NULL.\n");
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return 0;
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}
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if(mud->send_timeout != 0)
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return luaL_error( L, "sending in process" );
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pesp_conn = mud->pesp_conn;
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#if 0
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char temp[20] = {0};
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c_sprintf(temp, IPSTR, IP2STR( &(pesp_conn->proto.tcp->remote_ip) ) );
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NODE_DBG("remote ");
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NODE_DBG(temp);
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NODE_DBG(":");
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NODE_DBG("%d",pesp_conn->proto.tcp->remote_port);
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NODE_DBG(" sending data.\n");
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#endif
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const char *topic = luaL_checklstring( L, stack, &l );
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stack ++;
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if (topic == NULL)
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return luaL_error( L, "need topic" );
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const char *payload = luaL_checklstring( L, stack, &l );
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stack ++;
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uint8_t qos = luaL_checkinteger( L, stack);
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stack ++;
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uint8_t retain = luaL_checkinteger( L, stack);
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stack ++;
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mud->mqtt_state.outbound_message = mqtt_msg_publish(&mud->mqtt_state.mqtt_connection,
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topic, payload, l,
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qos, retain,
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&mud->mqtt_state.pending_msg_id);
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mud->mqtt_state.pending_msg_type = MQTT_MSG_TYPE_PUBLISH;
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mud->mqtt_state.pending_publish_qos = qos;
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mud->send_timeout = MQTT_SEND_TIMEOUT;
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if (lua_type(L, stack) == LUA_TFUNCTION || lua_type(L, stack) == LUA_TLIGHTFUNCTION){
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lua_pushvalue(L, stack); // copy argument (func) to the top of stack
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if(mud->cb_puback_ref != LUA_NOREF)
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luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_puback_ref);
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mud->cb_puback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
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}
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if(mud->secure)
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espconn_secure_sent(pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length);
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else
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espconn_sent(pesp_conn, mud->mqtt_state.outbound_message->data, mud->mqtt_state.outbound_message->length);
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mud->mqtt_state.outbound_message = NULL;
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return 0;
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}
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// Module function map
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#define MIN_OPT_LEVEL 2
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#include "lrodefs.h"
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static const LUA_REG_TYPE mqtt_socket_map[] =
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{
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{ LSTRKEY( "lwt" ), LFUNCVAL ( mqtt_socket_lwt ) },
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{ LSTRKEY( "connect" ), LFUNCVAL ( mqtt_socket_connect ) },
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{ LSTRKEY( "close" ), LFUNCVAL ( mqtt_socket_close ) },
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{ LSTRKEY( "publish" ), LFUNCVAL ( mqtt_socket_publish ) },
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{ LSTRKEY( "subscribe" ), LFUNCVAL ( mqtt_socket_subscribe ) },
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{ LSTRKEY( "on" ), LFUNCVAL ( mqtt_socket_on ) },
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{ LSTRKEY( "__gc" ), LFUNCVAL ( mqtt_delete ) },
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#if LUA_OPTIMIZE_MEMORY > 0
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{ LSTRKEY( "__index" ), LROVAL ( mqtt_socket_map ) },
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#endif
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{ LNILKEY, LNILVAL }
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};
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const LUA_REG_TYPE mqtt_map[] =
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{
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{ LSTRKEY( "Client" ), LFUNCVAL ( mqtt_socket_client ) },
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#if LUA_OPTIMIZE_MEMORY > 0
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{ LSTRKEY( "__metatable" ), LROVAL( mqtt_map ) },
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#endif
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{ LNILKEY, LNILVAL }
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};
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LUALIB_API int luaopen_mqtt( lua_State *L )
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{
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#if LUA_OPTIMIZE_MEMORY > 0
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luaL_rometatable(L, "mqtt.socket", (void *)mqtt_socket_map); // create metatable for mqtt.socket
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return 0;
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#else // #if LUA_OPTIMIZE_MEMORY > 0
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int n;
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luaL_register( L, AUXLIB_MQTT, mqtt_map );
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// Set it as its own metatable
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lua_pushvalue( L, -1 );
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lua_setmetatable( L, -2 );
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// Module constants
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// MOD_REG_NUMBER( L, "TCP", TCP );
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// create metatable
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luaL_newmetatable(L, "mqtt.socket");
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// metatable.__index = metatable
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lua_pushliteral(L, "__index");
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lua_pushvalue(L,-2);
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lua_rawset(L,-3);
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// Setup the methods inside metatable
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luaL_register( L, NULL, mqtt_socket_map );
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return 1;
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#endif // #if LUA_OPTIMIZE_MEMORY > 0
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}
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