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- // Module for mqtt
- //
- #include "module.h"
- #include "lauxlib.h"
- #include "platform.h"
- #include <string.h>
- #include <stddef.h>
- #include <stdint.h>
- #include "mem.h"
- #include "lwip/ip_addr.h"
- #include "espconn.h"
- #include "mqtt/mqtt_msg.h"
- #include "mqtt/msg_queue.h"
- #include "user_interface.h"
- #define MQTT_BUF_SIZE 1460
- #define MQTT_DEFAULT_KEEPALIVE 60
- #define MQTT_MAX_CLIENT_LEN 64
- #define MQTT_MAX_USER_LEN 64
- #define MQTT_MAX_PASS_LEN 64
- #define MQTT_SEND_TIMEOUT 5 /* seconds */
- typedef enum {
- MQTT_INIT,
- MQTT_CONNECT_SENDING,
- MQTT_CONNECT_SENT,
- MQTT_DATA
- } tConnState;
- typedef struct mqtt_event_data_t
- {
- uint8_t type;
- const char* topic;
- const char* data;
- uint16_t topic_length;
- uint16_t data_length;
- uint16_t data_offset;
- } mqtt_event_data_t;
- typedef enum {
- MQTT_RECV_NORMAL,
- MQTT_RECV_BUFFERING_SHORT,
- MQTT_RECV_BUFFERING,
- MQTT_RECV_SKIPPING,
- } tReceiveState;
- typedef struct mqtt_state_t
- {
- msg_queue_t* pending_msg_q;
- uint16_t next_message_id;
- uint8_t * recv_buffer; // heap buffer for multi-packet rx
- uint8_t * recv_buffer_wp; // write pointer in multi-packet rx
- union {
- uint16_t recv_buffer_size; // size of recv_buffer
- uint32_t recv_buffer_skip; // number of bytes left to skip, in skipping state
- };
- tReceiveState recv_buffer_state;
- } mqtt_state_t;
- typedef struct lmqtt_userdata
- {
- struct espconn pesp_conn;
- int self_ref;
- int cb_connect_ref;
- int cb_connect_fail_ref;
- int cb_disconnect_ref;
- int cb_message_ref;
- int cb_overflow_ref;
- int cb_suback_ref;
- int cb_unsuback_ref;
- int cb_puback_ref;
- /* Configuration options */
- struct {
- int client_id_ref;
- int username_ref;
- int password_ref;
- int will_topic_ref;
- int will_message_ref;
- int keepalive;
- uint16_t max_message_length;
- struct {
- unsigned will_qos : 2;
- bool will_retain : 1;
- bool clean_session : 1;
- bool secure : 1;
- } flags;
- } conf;
- mqtt_state_t mqtt_state;
- bool connected; // indicate socket connected, not mqtt prot connected.
- bool keepalive_sent;
- bool sending; // data sent to network stack, awaiting local acknowledge
- ETSTimer mqttTimer;
- tConnState connState;
- }lmqtt_userdata;
- // How large MQTT messages to accept by default
- #define DEFAULT_MAX_MESSAGE_LENGTH 1024
- static sint8 mqtt_socket_do_connect(struct lmqtt_userdata *);
- static void mqtt_socket_reconnected(void *arg, sint8_t err);
- static void mqtt_socket_connected(void *arg);
- static void mqtt_connack_fail(lmqtt_userdata * mud, int reason_code);
- static uint16_t mqtt_next_message_id(lmqtt_userdata * mud)
- {
- mud->mqtt_state.next_message_id++;
- if (mud->mqtt_state.next_message_id == 0)
- mud->mqtt_state.next_message_id++;
- return mud->mqtt_state.next_message_id;
- }
- static void mqtt_socket_cb_lua_noarg(lua_State *L, lmqtt_userdata *mud, int cb)
- {
- if (cb == LUA_NOREF)
- return;
- lua_rawgeti(L, LUA_REGISTRYINDEX, cb);
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->self_ref);
- lua_call(L, 1, 0);
- }
- static void mqtt_socket_disconnected(void *arg) // tcp only
- {
- NODE_DBG("enter mqtt_socket_disconnected.\n");
- lmqtt_userdata *mud = arg;
- if(mud == NULL)
- return;
- os_timer_disarm(&mud->mqttTimer);
- while (mud->mqtt_state.pending_msg_q) {
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- }
- if(mud->mqtt_state.recv_buffer) {
- free(mud->mqtt_state.recv_buffer);
- mud->mqtt_state.recv_buffer = NULL;
- }
- mud->mqtt_state.recv_buffer_size = 0;
- mud->mqtt_state.recv_buffer_state = MQTT_RECV_NORMAL;
- if(mud->pesp_conn.proto.tcp)
- free(mud->pesp_conn.proto.tcp);
- mud->pesp_conn.proto.tcp = NULL;
- int selfref = mud->self_ref;
- mud->self_ref = LUA_NOREF;
- lua_State *L = lua_getstate();
- if(mud->connected){ // call back only called when socket is from connection to disconnection.
- mud->connected = false;
- if((mud->cb_disconnect_ref != LUA_NOREF) && (selfref != LUA_NOREF)) {
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->cb_disconnect_ref);
- lua_rawgeti(L, LUA_REGISTRYINDEX, selfref);
- lua_call(L, 1, 0);
- }
- }
- // unref this, and the mqtt.socket userdata will delete it self
- luaL_unref(L, LUA_REGISTRYINDEX, selfref);
- NODE_DBG("leave mqtt_socket_disconnected.\n");
- }
- static void mqtt_socket_do_disconnect(struct lmqtt_userdata *mud)
- {
- #ifdef CLIENT_SSL_ENABLE
- if (mud->conf.flags.secure) {
- espconn_secure_disconnect(&mud->pesp_conn);
- } else
- #endif
- {
- espconn_disconnect(&mud->pesp_conn);
- }
- }
- static void mqtt_socket_reconnected(void *arg, sint8_t err)
- {
- NODE_DBG("enter mqtt_socket_reconnected (err=%d)\n", err);
- lmqtt_userdata *mud = arg;
- if(mud == NULL)
- return;
- os_timer_disarm(&mud->mqttTimer);
- mqtt_connack_fail(mud, MQTT_CONN_FAIL_SERVER_NOT_FOUND);
- mqtt_socket_disconnected(arg);
- NODE_DBG("leave mqtt_socket_reconnected.\n");
- }
- static void deliver_publish(lmqtt_userdata * mud, uint8_t* message, uint16_t length, uint8_t is_overflow)
- {
- NODE_DBG("enter deliver_publish (len=%d, overflow=%d).\n", length, is_overflow);
- if(mud == NULL)
- return;
- mqtt_event_data_t event_data;
- event_data.topic_length = length;
- event_data.topic = mqtt_get_publish_topic(message, &event_data.topic_length);
- event_data.data_length = length;
- event_data.data = mqtt_get_publish_data(message, &event_data.data_length);
- int cb_ref = !is_overflow ? mud->cb_message_ref : mud->cb_overflow_ref;
- if(cb_ref == LUA_NOREF)
- return;
- if(mud->self_ref == LUA_NOREF)
- return;
- lua_State *L = lua_getstate();
- if(event_data.topic && (event_data.topic_length > 0)){
- lua_rawgeti(L, LUA_REGISTRYINDEX, cb_ref);
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->self_ref);
- lua_pushlstring(L, event_data.topic, event_data.topic_length);
- } else {
- NODE_DBG("get wrong packet.\n");
- return;
- }
- if(event_data.data && (event_data.data_length > 0)){
- lua_pushlstring(L, event_data.data, event_data.data_length);
- lua_call(L, 3, 0);
- } else {
- lua_call(L, 2, 0);
- }
- NODE_DBG("leave deliver_publish.\n");
- }
- static void mqtt_connack_fail(lmqtt_userdata * mud, int reason_code)
- {
- NODE_DBG("enter mqtt_connack_fail\n");
- if(mud->cb_connect_fail_ref == LUA_NOREF || mud->self_ref == LUA_NOREF)
- {
- return;
- }
- lua_State *L = lua_getstate();
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->cb_connect_fail_ref);
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->self_ref);
- lua_pushinteger(L, reason_code);
- lua_call(L, 2, 0);
- NODE_DBG("leave mqtt_connack_fail\n");
- }
- static sint8 mqtt_send_if_possible(struct lmqtt_userdata *mud)
- {
- /* Waiting for the local network stack to get back to us? Can't send. */
- if (mud->sending)
- return ESPCONN_OK;
- sint8 espconn_status = ESPCONN_OK;
- msg_queue_t *pending_msg = msg_peek(&(mud->mqtt_state.pending_msg_q));
- if (pending_msg && !pending_msg->sent) {
- pending_msg->sent = 1;
- NODE_DBG("Sent: %d\n", pending_msg->msg.length);
- #ifdef CLIENT_SSL_ENABLE
- if( mud->conf.flags.secure )
- {
- espconn_status = espconn_secure_send(&mud->pesp_conn, pending_msg->msg.data, pending_msg->msg.length );
- }
- else
- #endif
- {
- espconn_status = espconn_send(&mud->pesp_conn, pending_msg->msg.data, pending_msg->msg.length );
- }
- mud->sending = true;
- os_timer_disarm(&mud->mqttTimer);
- os_timer_arm(&mud->mqttTimer, MQTT_SEND_TIMEOUT * 1000, 0);
- }
- NODE_DBG("send_if_poss, queue size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- return espconn_status;
- }
- static void mqtt_socket_received(void *arg, char *pdata, unsigned short len)
- {
- NODE_DBG("enter mqtt_socket_received (rxlen=%u).\n", len);
- uint8_t msg_type;
- uint8_t msg_qos;
- uint16_t msg_id;
- uint8_t *in_buffer = (uint8_t *)pdata;
- uint16_t in_buffer_length = len;
- uint8_t *continuation_buffer = NULL;
- uint8_t *temp_pdata = NULL;
- lmqtt_userdata *mud = arg;
- if(mud == NULL)
- return;
- switch(mud->mqtt_state.recv_buffer_state) {
- case MQTT_RECV_NORMAL:
- // No previous buffer.
- break;
- case MQTT_RECV_BUFFERING_SHORT:
- // Last buffer had so few byte that we could not determine message length.
- // Store in a local heap buffer and operate on this, as if was the regular pdata buffer.
- // Avoids having to repeat message size/overflow logic.
- temp_pdata = calloc(1,mud->mqtt_state.recv_buffer_size + len);
- if(temp_pdata == NULL) {
- NODE_DBG("MQTT[buffering-short]: Failed to allocate %u bytes, disconnecting...\n", mud->mqtt_state.recv_buffer_size + len);
- mqtt_socket_do_disconnect(mud);
- return;
- }
- NODE_DBG("MQTT[buffering-short]: Continuing with %u + %u bytes\n", mud->mqtt_state.recv_buffer_size, len);
- memcpy(temp_pdata, mud->mqtt_state.recv_buffer, mud->mqtt_state.recv_buffer_size);
- memcpy(temp_pdata + mud->mqtt_state.recv_buffer_size, pdata, len);
- free(mud->mqtt_state.recv_buffer);
- mud->mqtt_state.recv_buffer = NULL;
- mud->mqtt_state.recv_buffer_state = MQTT_RECV_NORMAL;
- in_buffer = temp_pdata;
- in_buffer_length = mud->mqtt_state.recv_buffer_size + len;
- break;
- case MQTT_RECV_BUFFERING: {
- // safe cast: we never allow longer buffer.
- uint16_t current_length = (uint16_t) (mud->mqtt_state.recv_buffer_wp - mud->mqtt_state.recv_buffer);
- NODE_DBG("MQTT[buffering]: appending %u bytes to previous recv buffer (%u out of wanted %u)\n",
- in_buffer_length,
- current_length,
- mud->mqtt_state.recv_buffer_size);
- // Copy from rx buffer to heap buffer. Smallest of [remainder of pending message] and [all of buffer]
- uint16_t copy_length = LWIP_MIN(mud->mqtt_state.recv_buffer_size - current_length, in_buffer_length);
- memcpy(mud->mqtt_state.recv_buffer_wp, pdata, copy_length);
- mud->mqtt_state.recv_buffer_wp += copy_length;
- in_buffer_length = (uint16_t) (mud->mqtt_state.recv_buffer_wp - mud->mqtt_state.recv_buffer);
- if (in_buffer_length < mud->mqtt_state.recv_buffer_size) {
- NODE_DBG("MQTT[buffering]: need %u more bytes, waiting for next rx.\n",
- mud->mqtt_state.recv_buffer_size - in_buffer_length
- );
- goto RX_PACKET_FINISHED;
- }
- NODE_DBG("MQTT[buffering]: Full message received (%u). remainding bytes=%u\n",
- mud->mqtt_state.recv_buffer_size,
- len - copy_length);
- // Point continuation_buffer to any additional data in pdata.
- // May become 0 bytes, but used to trigger free!
- continuation_buffer = pdata + copy_length;
- len -= copy_length; // borrow len instead of having another variable..
- in_buffer = mud->mqtt_state.recv_buffer;
- // in_buffer_length was set above
- mud->mqtt_state.recv_buffer_state = MQTT_RECV_NORMAL;
- break;
- }
- case MQTT_RECV_SKIPPING:
- // Last rx had a message which was too large to process, skip it.
- if(mud->mqtt_state.recv_buffer_skip > in_buffer_length) {
- NODE_DBG("MQTT[skipping]: skip=%u. Skipping full RX buffer (%u).\n",
- mud->mqtt_state.recv_buffer_skip,
- in_buffer_length
- );
- mud->mqtt_state.recv_buffer_skip -= in_buffer_length;
- goto RX_PACKET_FINISHED;
- }
- NODE_DBG("MQTT[skipping]: skip=%u. Skipping partial RX buffer, continuing at %u\n",
- mud->mqtt_state.recv_buffer_skip,
- in_buffer_length
- );
- in_buffer += mud->mqtt_state.recv_buffer_skip;
- in_buffer_length -= mud->mqtt_state.recv_buffer_skip;
- mud->mqtt_state.recv_buffer_skip = 0;
- mud->mqtt_state.recv_buffer_state = MQTT_RECV_NORMAL;
- break;
- }
- READPACKET:
- if(in_buffer_length <= 0)
- goto RX_PACKET_FINISHED;
- // MQTT publish message can in theory be 256Mb, while we do not support it we need to be
- // able to do math on it.
- int32_t message_length;
- // temp buffer for control messages
- uint8_t temp_buffer[MQTT_BUF_SIZE];
- mqtt_message_buffer_t msgb;
- mqtt_msg_init(&msgb, temp_buffer, MQTT_BUF_SIZE);
- mqtt_message_t *temp_msg = NULL;
- switch(mud->connState){
- case MQTT_CONNECT_SENDING:
- case MQTT_CONNECT_SENT:
- os_timer_disarm(&mud->mqttTimer);
- os_timer_arm(&mud->mqttTimer, mud->conf.keepalive * 1000, 0);
- if(mqtt_get_type(in_buffer) != MQTT_MSG_TYPE_CONNACK){
- NODE_DBG("MQTT: Invalid packet\r\n");
- mud->connState = MQTT_INIT;
- mqtt_socket_do_disconnect(mud);
- mqtt_connack_fail(mud, MQTT_CONN_FAIL_NOT_A_CONNACK_MSG);
- break;
- } else if (mqtt_get_connect_ret_code(in_buffer) != MQTT_CONNACK_ACCEPTED) {
- NODE_DBG("MQTT: CONNACK REFUSED (CODE: %d)\n", mqtt_get_connect_ret_code(in_buffer));
- mud->connState = MQTT_INIT;
- mqtt_socket_do_disconnect(mud);
- mqtt_connack_fail(mud, mqtt_get_connect_ret_code(in_buffer));
- break;
- } else {
- mud->connState = MQTT_DATA;
- NODE_DBG("MQTT: Connected\r\n");
- mud->keepalive_sent = 0;
- mqtt_socket_cb_lua_noarg(lua_getstate(), mud, mud->cb_connect_ref);
- break;
- }
- break;
- case MQTT_DATA:
- message_length = mqtt_get_total_length(in_buffer, in_buffer_length);
- msg_type = mqtt_get_type(in_buffer);
- msg_qos = mqtt_get_qos(in_buffer);
- msg_id = mqtt_get_id(in_buffer, in_buffer_length);
- NODE_DBG("MQTT_DATA: msg length: %u, buffer length: %u\r\n",
- message_length,
- in_buffer_length);
- if (message_length > mud->conf.max_message_length) {
- // The pending message length is larger than we was configured to allow
- if(msg_qos > 0 && msg_id == 0) {
- NODE_DBG("MQTT: msg too long, but not enough data to get msg_id: total=%u, deliver=%u\r\n", message_length, in_buffer_length);
- // qos requested, but too short buffer to get a packet ID.
- // Trigger the "short buffer" mode
- message_length = -1;
- // Drop through to partial message handling below.
- } else {
- NODE_DBG("MQTT: msg too long: total=%u, deliver=%u\r\n", message_length, in_buffer_length);
- if (msg_type == MQTT_MSG_TYPE_PUBLISH) {
- // In practice we should never get any other types..
- deliver_publish(mud, in_buffer, in_buffer_length, 1);
- // If qos specified, we should ACK it.
- // In theory it might be wrong to ack it before we received all TCP packets, but this avoids
- // buffering and special code to handle this corner-case. Server will most likely have
- // written all to OS socket anyway, and not be aware that we "should" not have received it all yet.
- if(msg_qos == 1){
- temp_msg = mqtt_msg_puback(&msgb, msg_id);
- msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_PUBACK, (int)mqtt_get_qos(temp_msg->data) );
- }
- else if(msg_qos == 2){
- temp_msg = mqtt_msg_pubrec(&msgb, msg_id);
- msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_PUBREC, (int)mqtt_get_qos(temp_msg->data) );
- }
- if(msg_qos == 1 || msg_qos == 2){
- NODE_DBG("MQTT: Queue response QoS: %d\r\n", msg_qos);
- }
- }
- if (message_length > in_buffer_length) {
- // Ignore bytes in subsequent packet(s) too.
- NODE_DBG("MQTT: skipping into next rx\n");
- mud->mqtt_state.recv_buffer_state = MQTT_RECV_SKIPPING;
- mud->mqtt_state.recv_buffer_skip = (uint32_t) message_length - in_buffer_length;
- break;
- } else {
- NODE_DBG("MQTT: Skipping message\n");
- mud->mqtt_state.recv_buffer_state = MQTT_RECV_NORMAL;
- goto RX_MESSAGE_PROCESSED;
- }
- }
- }
- if (message_length == -1 || message_length > in_buffer_length) {
- // Partial message in buffer, need to store on heap until next RX. Allocate size for full message directly,
- // instead of potential reallocs, to avoid fragmentation.
- // If message_length is indicated as -1, we do not have enough data to determine the length properly.
- // Just put what we have on heap, and place in state BUFFERING_SHORT.
- NODE_DBG("MQTT: Partial message received (%u of %d). Buffering\r\n",
- in_buffer_length,
- message_length);
- // although message_length is 32bit, it should never go above 16bit since
- // max_message_length is 16bit.
- uint16_t alloc_size = message_length > 0 ? (uint16_t)message_length : in_buffer_length;
- mud->mqtt_state.recv_buffer = calloc(1,alloc_size);
- if (mud->mqtt_state.recv_buffer == NULL) {
- NODE_DBG("MQTT: Failed to allocate %u bytes, disconnecting...\n", alloc_size);
- mqtt_socket_do_disconnect(mud);
- return;
- }
- memcpy(mud->mqtt_state.recv_buffer, in_buffer, in_buffer_length);
- mud->mqtt_state.recv_buffer_wp = mud->mqtt_state.recv_buffer + in_buffer_length;
- mud->mqtt_state.recv_buffer_state = message_length > 0 ? MQTT_RECV_BUFFERING : MQTT_RECV_BUFFERING_SHORT;
- mud->mqtt_state.recv_buffer_size = alloc_size;
- NODE_DBG("MQTT: Wait for next recv\n");
- break;
- }
- msg_queue_t *pending_msg = msg_peek(&(mud->mqtt_state.pending_msg_q));
- NODE_DBG("MQTT_DATA: type: %d, qos: %d, msg_id: %d, pending_id: %d, msg length: %u, buffer length: %u\r\n",
- msg_type,
- msg_qos,
- msg_id,
- (pending_msg)?pending_msg->msg_id:0,
- message_length,
- in_buffer_length);
- switch(msg_type)
- {
- case MQTT_MSG_TYPE_SUBACK:
- if(pending_msg && pending_msg->msg_type == MQTT_MSG_TYPE_SUBSCRIBE && pending_msg->msg_id == msg_id){
- NODE_DBG("MQTT: Subscribe successful\r\n");
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- mqtt_socket_cb_lua_noarg(lua_getstate(), mud, mud->cb_suback_ref);
- }
- break;
- case MQTT_MSG_TYPE_UNSUBACK:
- if(pending_msg && pending_msg->msg_type == MQTT_MSG_TYPE_UNSUBSCRIBE && pending_msg->msg_id == msg_id){
- NODE_DBG("MQTT: UnSubscribe successful\r\n");
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- mqtt_socket_cb_lua_noarg(lua_getstate(), mud, mud->cb_unsuback_ref);
- }
- break;
- case MQTT_MSG_TYPE_PUBLISH:
- if(msg_qos == 1){
- temp_msg = mqtt_msg_puback(&msgb, msg_id);
- msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_PUBACK, (int)mqtt_get_qos(temp_msg->data) );
- }
- else if(msg_qos == 2){
- temp_msg = mqtt_msg_pubrec(&msgb, msg_id);
- msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_PUBREC, (int)mqtt_get_qos(temp_msg->data) );
- }
- if(msg_qos == 1 || msg_qos == 2){
- NODE_DBG("MQTT: Queue response QoS: %d\r\n", msg_qos);
- }
- deliver_publish(mud, in_buffer, (uint16_t)message_length, 0);
- break;
- case MQTT_MSG_TYPE_PUBACK:
- if(pending_msg && pending_msg->msg_type == MQTT_MSG_TYPE_PUBLISH && pending_msg->msg_id == msg_id){
- NODE_DBG("MQTT: Publish with QoS = 1 successful\r\n");
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- mqtt_socket_cb_lua_noarg(lua_getstate(), mud, mud->cb_puback_ref);
- }
- break;
- case MQTT_MSG_TYPE_PUBREC:
- if(pending_msg && pending_msg->msg_type == MQTT_MSG_TYPE_PUBLISH && pending_msg->msg_id == msg_id){
- NODE_DBG("MQTT: Publish with QoS = 2 Received PUBREC\r\n");
- // Note: actually, should not destroy the msg until PUBCOMP is received.
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- temp_msg = mqtt_msg_pubrel(&msgb, msg_id);
- msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_PUBREL, (int)mqtt_get_qos(temp_msg->data) );
- NODE_DBG("MQTT: Response PUBREL\r\n");
- }
- break;
- case MQTT_MSG_TYPE_PUBREL:
- if(pending_msg && pending_msg->msg_type == MQTT_MSG_TYPE_PUBREC && pending_msg->msg_id == msg_id){
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- temp_msg = mqtt_msg_pubcomp(&msgb, msg_id);
- msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_PUBCOMP, (int)mqtt_get_qos(temp_msg->data) );
- NODE_DBG("MQTT: Response PUBCOMP\r\n");
- }
- break;
- case MQTT_MSG_TYPE_PUBCOMP:
- if(pending_msg && pending_msg->msg_type == MQTT_MSG_TYPE_PUBREL && pending_msg->msg_id == msg_id){
- NODE_DBG("MQTT: Publish with QoS = 2 successful\r\n");
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- mqtt_socket_cb_lua_noarg(lua_getstate(), mud, mud->cb_puback_ref);
- }
- break;
- case MQTT_MSG_TYPE_PINGREQ:
- temp_msg = mqtt_msg_pingresp(&msgb);
- msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_PINGRESP, (int)mqtt_get_qos(temp_msg->data) );
- NODE_DBG("MQTT: Response PINGRESP\r\n");
- break;
- case MQTT_MSG_TYPE_PINGRESP:
- // Ignore
- mud->keepalive_sent = 0;
- NODE_DBG("MQTT: PINGRESP received\r\n");
- break;
- }
- RX_MESSAGE_PROCESSED:
- if(continuation_buffer != NULL) {
- NODE_DBG("MQTT[buffering]: buffered message finished. Continuing with rest of rx buffer (%u)\n",
- len);
- free(mud->mqtt_state.recv_buffer);
- mud->mqtt_state.recv_buffer = NULL;
- in_buffer = continuation_buffer;
- in_buffer_length = len;
- continuation_buffer = NULL;
- }else{
- // Message have been fully processed (or ignored). Move pointer ahead
- // and continue with next message, if any.
- in_buffer_length -= message_length;
- in_buffer += message_length;
- }
- if(in_buffer_length > 0)
- {
- NODE_DBG("Get another published message\r\n");
- goto READPACKET;
- }
- break;
- }
- RX_PACKET_FINISHED:
- if(temp_pdata != NULL) {
- free(temp_pdata);
- }
- mqtt_send_if_possible(mud);
- NODE_DBG("leave mqtt_socket_received\n");
- return;
- }
- static void mqtt_socket_sent(void *arg)
- {
- NODE_DBG("enter mqtt_socket_sent.\n");
- lmqtt_userdata *mud = arg;
- if(mud == NULL)
- return;
- if(!mud->connected)
- return;
- mud->sending = false;
- os_timer_disarm(&mud->mqttTimer);
- if(mud->connState == MQTT_CONNECT_SENDING){
- mud->connState = MQTT_CONNECT_SENT;
- os_timer_arm(&mud->mqttTimer, MQTT_SEND_TIMEOUT * 1000, 0);
- // MQTT_CONNECT not queued.
- return;
- }
- /* Ready for timeout */
- os_timer_arm(&mud->mqttTimer, mud->conf.keepalive * 1000, 0);
- NODE_DBG("sent1, queue size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- msg_queue_t *node = msg_peek(&(mud->mqtt_state.pending_msg_q));
- if (node) {
- switch (node->msg_type) {
- case MQTT_MSG_TYPE_PUBLISH:
- // qos = 0, publish and forget. Run the callback now because we
- // won't get a puback from the server and it's not clear when else
- // we should tell the user the message drained from the egress queue
- if (node->publish_qos == 0) {
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- mqtt_socket_cb_lua_noarg(lua_getstate(), mud, mud->cb_puback_ref);
- mqtt_send_if_possible(mud);
- }
- break;
- case MQTT_MSG_TYPE_PUBACK:
- /* FALLTHROUGH */
- case MQTT_MSG_TYPE_PUBCOMP:
- /* FALLTHROUGH */
- case MQTT_MSG_TYPE_PINGREQ:
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- mqtt_send_if_possible(mud);
- break;
- case MQTT_MSG_TYPE_DISCONNECT:
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- mqtt_socket_do_disconnect(mud);
- break;
- }
- }
- NODE_DBG("sent2, queue size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- NODE_DBG("leave mqtt_socket_sent.\n");
- }
- static void mqtt_socket_connected(void *arg)
- {
- NODE_DBG("enter mqtt_socket_connected.\n");
- lmqtt_userdata *mud = arg;
- if(mud == NULL)
- return;
- struct espconn *pesp_conn = &mud->pesp_conn;
- mud->connected = true;
- espconn_regist_recvcb(pesp_conn, mqtt_socket_received);
- espconn_regist_sentcb(pesp_conn, mqtt_socket_sent);
- espconn_regist_disconcb(pesp_conn, mqtt_socket_disconnected);
- uint8_t temp_buffer[MQTT_BUF_SIZE];
- mqtt_message_buffer_t msgb;
- mqtt_msg_init(&msgb, temp_buffer, MQTT_BUF_SIZE);
- /* Build the mqtt_connect_info on the stack and assemble the message */
- lua_State *L = lua_getstate();
- int ltop = lua_gettop(L);
- struct mqtt_connect_info mci;
- mci.clean_session = mud->conf.flags.clean_session;
- mci.will_retain = mud->conf.flags.will_retain;
- mci.will_qos = mud->conf.flags.will_qos;
- mci.keepalive = mud->conf.keepalive;
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->conf.client_id_ref);
- mci.client_id = lua_tostring(L, -1);
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->conf.username_ref);
- mci.username = lua_tostring(L, -1);
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->conf.password_ref);
- mci.password = lua_tostring(L, -1);
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->conf.will_topic_ref);
- mci.will_topic = lua_tostring(L, -1);
- lua_rawgeti(L, LUA_REGISTRYINDEX, mud->conf.will_message_ref);
- mci.will_message = lua_tostring(L, -1);
- mqtt_message_t* temp_msg = mqtt_msg_connect(&msgb, &mci);
- NODE_DBG("Send MQTT connection infomation, data len: %d, d[0]=%d \r\n", temp_msg->length, temp_msg->data[0]);
- lua_settop(L, ltop); /* Done with strings, restore the stack */
- // not queue this message. should send right now. or should enqueue this before head.
- #ifdef CLIENT_SSL_ENABLE
- if(mud->conf.flags.secure)
- {
- espconn_secure_send(pesp_conn, temp_msg->data, temp_msg->length);
- }
- else
- #endif
- {
- espconn_send(pesp_conn, temp_msg->data, temp_msg->length);
- }
- mud->sending = true;
- os_timer_disarm(&mud->mqttTimer);
- os_timer_arm(&mud->mqttTimer, MQTT_SEND_TIMEOUT * 1000, 0);
- mud->connState = MQTT_CONNECT_SENDING;
- NODE_DBG("leave mqtt_socket_connected, heap = %u.\n", system_get_free_heap_size());
- return;
- }
- void mqtt_socket_timer(void *arg)
- {
- NODE_DBG("enter mqtt_socket_timer.\n");
- lmqtt_userdata *mud = (lmqtt_userdata*) arg;
- if(mud == NULL)
- return;
- if(mud->pesp_conn.proto.tcp == NULL){
- NODE_DBG("MQTT not connected\n");
- return;
- }
- NODE_DBG("timer, queue size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- if(mud->connState == MQTT_CONNECT_SENDING){ // MQTT_CONNECT send time out.
- NODE_DBG("sSend MQTT_CONNECT failed.\n");
- mud->connState = MQTT_INIT;
- mqtt_socket_do_disconnect(mud);
- mqtt_connack_fail(mud, MQTT_CONN_FAIL_TIMEOUT_SENDING);
- } else if(mud->connState == MQTT_CONNECT_SENT) { // wait for CONACK time out.
- NODE_DBG("MQTT_CONNECT timeout.\n");
- mud->connState = MQTT_INIT;
- mqtt_socket_do_disconnect(mud);
- mqtt_connack_fail(mud, MQTT_CONN_FAIL_TIMEOUT_RECEIVING);
- } else if(mud->connState == MQTT_DATA){
- if(!msg_peek(&(mud->mqtt_state.pending_msg_q))) {
- // no queued event.
- if (mud->keepalive_sent) {
- // Oh dear -- keepalive timer expired and still no ack of previous message
- mqtt_socket_do_disconnect(mud);
- } else {
- uint8_t temp_buffer[MQTT_BUF_SIZE];
- mqtt_message_buffer_t msgb;
- mqtt_msg_init(&msgb, temp_buffer, MQTT_BUF_SIZE);
- NODE_DBG("\r\nMQTT: Send keepalive packet\r\n");
- mqtt_message_t* temp_msg = mqtt_msg_pingreq(&msgb);
- msg_queue_t *node = msg_enqueue( &(mud->mqtt_state.pending_msg_q), temp_msg,
- 0, MQTT_MSG_TYPE_PINGREQ, (int)mqtt_get_qos(temp_msg->data) );
- mud->keepalive_sent = 1;
- mqtt_send_if_possible(mud);
- }
- }
- }
- NODE_DBG("leave mqtt_socket_timer.\n");
- }
- // Lua: mqtt.Client(clientid, keepalive, user, pass, clean_session, max_message_length)
- static int mqtt_socket_client( lua_State* L )
- {
- NODE_DBG("enter mqtt_socket_client.\n");
- lmqtt_userdata *mud;
- int stack = 1;
- int top = lua_gettop(L);
- // create a object
- mud = (lmqtt_userdata *)lua_newuserdata(L, sizeof(lmqtt_userdata));
- memset(mud, 0, sizeof(*mud));
- // pre-initialize it, in case of errors
- mud->self_ref = LUA_NOREF;
- mud->cb_connect_ref = LUA_NOREF;
- mud->cb_connect_fail_ref = LUA_NOREF;
- mud->cb_disconnect_ref = LUA_NOREF;
- mud->cb_message_ref = LUA_NOREF;
- mud->cb_overflow_ref = LUA_NOREF;
- mud->cb_suback_ref = LUA_NOREF;
- mud->cb_unsuback_ref = LUA_NOREF;
- mud->cb_puback_ref = LUA_NOREF;
- mud->conf.client_id_ref = LUA_NOREF;
- mud->conf.username_ref = LUA_NOREF;
- mud->conf.password_ref = LUA_NOREF;
- mud->conf.will_topic_ref = LUA_NOREF;
- mud->conf.will_message_ref = LUA_NOREF;
- mud->connState = MQTT_INIT;
- // set its metatable
- luaL_getmetatable(L, "mqtt.socket");
- lua_setmetatable(L, -2);
- if( lua_isstring(L,stack) ) // deal with the clientid string
- {
- lua_pushvalue(L, stack);
- stack++;
- } else {
- char tempid[20] = {0};
- sprintf(tempid, "%s%x", "NodeMCU_", system_get_chip_id() );
- lua_pushstring(L, tempid);
- }
- mud->conf.client_id_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- if(lua_isnumber( L, stack ))
- {
- mud->conf.keepalive = luaL_checkinteger( L, stack);
- stack++;
- }
- if(mud->conf.keepalive == 0) {
- mud->conf.keepalive = MQTT_DEFAULT_KEEPALIVE;
- }
- if(lua_isstring( L, stack )){
- lua_pushvalue(L, stack);
- mud->conf.username_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- stack++;
- }
- if(lua_isstring( L, stack )){
- lua_pushvalue(L, stack);
- mud->conf.password_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- stack++;
- }
- if(lua_isnumber( L, stack ))
- {
- mud->conf.flags.clean_session = !!luaL_checkinteger(L, stack);
- stack++;
- }
- if(lua_isnumber( L, stack ))
- {
- mud->conf.max_message_length = luaL_checkinteger( L, stack);
- stack++;
- }
- if(mud->conf.max_message_length == 0) {
- mud->conf.max_message_length = DEFAULT_MAX_MESSAGE_LENGTH;
- }
- mud->mqtt_state.pending_msg_q = NULL;
- mud->mqtt_state.recv_buffer = NULL;
- mud->mqtt_state.recv_buffer_size = 0;
- mud->mqtt_state.recv_buffer_state = MQTT_RECV_NORMAL;
- NODE_DBG("leave mqtt_socket_client.\n");
- return 1;
- }
- // Lua: mqtt.delete( socket )
- // call close() first
- // socket: unref everything
- static int mqtt_delete( lua_State* L )
- {
- NODE_DBG("enter mqtt_delete.\n");
- lmqtt_userdata *mud = (lmqtt_userdata *)luaL_checkudata(L, 1, "mqtt.socket");
- os_timer_disarm(&mud->mqttTimer);
- mud->connected = false;
- // ---- alloc-ed in mqtt_socket_connect()
- if(mud->pesp_conn.proto.tcp)
- free(mud->pesp_conn.proto.tcp);
- mud->pesp_conn.proto.tcp = NULL;
- while(mud->mqtt_state.pending_msg_q) {
- msg_destroy(msg_dequeue(&(mud->mqtt_state.pending_msg_q)));
- }
- //--------- alloc-ed in mqtt_socket_received()
- if(mud->mqtt_state.recv_buffer) {
- free(mud->mqtt_state.recv_buffer);
- mud->mqtt_state.recv_buffer = NULL;
- }
- // ----
- // free (unref) callback ref
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_ref);
- mud->cb_connect_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_fail_ref);
- mud->cb_connect_fail_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_disconnect_ref);
- mud->cb_disconnect_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_message_ref);
- mud->cb_message_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_overflow_ref);
- mud->cb_overflow_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_suback_ref);
- mud->cb_suback_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_unsuback_ref);
- mud->cb_unsuback_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_puback_ref);
- mud->cb_puback_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->conf.client_id_ref);
- mud->conf.client_id_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->conf.username_ref);
- mud->conf.username_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->conf.password_ref);
- mud->conf.password_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->conf.will_topic_ref);
- mud->conf.will_topic_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->conf.will_message_ref);
- mud->conf.will_message_ref = LUA_NOREF;
- int selfref = mud->self_ref;
- mud->self_ref = LUA_NOREF;
- luaL_unref(L, LUA_REGISTRYINDEX, mud->self_ref);
- NODE_DBG("leave mqtt_delete.\n");
- return 0;
- }
- static sint8 mqtt_socket_do_connect(struct lmqtt_userdata *mud)
- {
- NODE_DBG("enter mqtt_socket_do_connect.\n");
- sint8 espconn_status;
- mud->connState = MQTT_INIT;
- #ifdef CLIENT_SSL_ENABLE
- if(mud->conf.flags.secure)
- {
- NODE_DBG("mqtt_socket_do_connect using espconn_secure\n");
- espconn_status = espconn_secure_connect(&mud->pesp_conn);
- }
- else
- #endif
- {
- espconn_status = espconn_connect(&mud->pesp_conn);
- }
- NODE_DBG("leave mqtt_socket_do_connect espconn_status=%d\n", espconn_status);
- return espconn_status;
- }
- static void socket_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
- {
- lmqtt_userdata *mud = arg;
- if((ipaddr == NULL) || (ipaddr->addr == 0))
- {
- NODE_DBG("socket_dns_found failure\n");
- mqtt_connack_fail(mud, MQTT_CONN_FAIL_DNS);
- // although not connected, but fire disconnect callback to release every thing.
- mqtt_socket_disconnected(arg);
- return;
- }
- memcpy(&mud->pesp_conn.proto.tcp->remote_ip, &(ipaddr->addr), 4);
- NODE_DBG("socket_dns_found success: ");
- NODE_DBG(IPSTR, IP2STR(&(ipaddr->addr)));
- NODE_DBG("\n");
- if(mqtt_socket_do_connect(mud) != ESPCONN_OK) {
- NODE_DBG("socket_dns_found, got DNS but connect failed\n");
- mqtt_connack_fail(mud, MQTT_CONN_FAIL_DNS);
- mqtt_socket_disconnected(arg);
- return;
- }
- }
- #include "pm/swtimer.h"
- // Lua: mqtt:connect( host, port, secure, function(client), function(client, connect_return_code) )
- static int mqtt_socket_connect( lua_State* L )
- {
- NODE_DBG("enter mqtt_socket_connect.\n");
- lmqtt_userdata *mud = NULL;
- unsigned port = 1883;
- size_t il;
- ip_addr_t ipaddr;
- const char *domain;
- int stack = 1;
- int top = lua_gettop(L);
- mud = (lmqtt_userdata *)luaL_checkudata(L, stack, "mqtt.socket");
- stack++;
- struct espconn *pesp_conn = &mud->pesp_conn;
- if(mud->connected){
- return luaL_error(L, "already connected");
- }
- mud->connected = false;
- mud->sending = false;
- if( (stack<=top) && lua_isstring(L,stack) ) // deal with the domain string
- {
- domain = luaL_checklstring( L, stack, &il );
- if (!domain)
- return luaL_error(L, "invalid domain");
- stack++;
- }
- if ( (stack<=top) && lua_isnumber(L, stack) )
- {
- port = lua_tointeger(L, stack);
- stack++;
- }
- if ( (stack<=top) && (lua_isnumber(L, stack) || lua_isboolean(L, stack)) )
- {
- if (lua_isnumber(L, stack)) {
- platform_print_deprecation_note("mqtt.connect secure parameter as integer","in the future");
- mud->conf.flags.secure = !!lua_tointeger(L, stack);
- } else {
- mud->conf.flags.secure = lua_toboolean(L, stack);
- }
- stack++;
- }
- #ifndef CLIENT_SSL_ENABLE
- if ( mud->conf.flags.secure )
- {
- return luaL_error(L, "ssl not available");
- }
- #endif
- // call back function when a connection is obtained, tcp only
- if ((stack<=top) && (lua_isfunction(L, stack))){
- lua_pushvalue(L, stack); // copy argument (func) to the top of stack
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_ref);
- mud->cb_connect_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- }
- stack++;
- // call back function when a connection fails
- if ((stack<=top) && (lua_isfunction(L, stack))){
- lua_pushvalue(L, stack); // copy argument (func) to the top of stack
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_fail_ref);
- mud->cb_connect_fail_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- }
- if (!pesp_conn->proto.tcp)
- pesp_conn->proto.tcp = (esp_tcp *)calloc(1,sizeof(esp_tcp));
- if(!pesp_conn->proto.tcp) {
- return luaL_error(L, "not enough memory");
- }
- luaL_unref(L, LUA_REGISTRYINDEX, mud->self_ref);
- lua_pushvalue(L, 1); // copy userdata and persist it in the registry
- mud->self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- pesp_conn->type = ESPCONN_TCP;
- pesp_conn->state = ESPCONN_NONE;
- pesp_conn->proto.tcp->remote_port = port;
- if (pesp_conn->proto.tcp->local_port == 0)
- pesp_conn->proto.tcp->local_port = espconn_port();
- espconn_regist_connectcb(pesp_conn, mqtt_socket_connected);
- espconn_regist_reconcb(pesp_conn, mqtt_socket_reconnected);
- os_timer_disarm(&mud->mqttTimer);
- os_timer_setfn(&mud->mqttTimer, (os_timer_func_t *)mqtt_socket_timer, mud);
- SWTIMER_REG_CB(mqtt_socket_timer, SWTIMER_RESUME);
- //I assume that mqtt_socket_timer connects to the mqtt server, but I'm not really sure what impact light_sleep will have on it.
- //My guess: If in doubt, resume the timer
- // timer started in socket_connect()
- ip_addr_t host_ip;
- switch (dns_gethostbyname(domain, &host_ip, socket_dns_found, mud))
- {
- case ERR_OK:
- socket_dns_found(domain, &host_ip, mud); // ip is returned in host_ip.
- break;
- case ERR_INPROGRESS:
- break;
- default:
- // Something has gone wrong; bail out?
- mqtt_connack_fail(mud, MQTT_CONN_FAIL_DNS);
- }
- NODE_DBG("leave mqtt_socket_connect.\n");
- return 0;
- }
- // Lua: mqtt:close()
- // client disconnect and unref itself
- static int mqtt_socket_close( lua_State* L )
- {
- NODE_DBG("enter mqtt_socket_close.\n");
- lmqtt_userdata *mud = NULL;
- mud = (lmqtt_userdata *)luaL_checkudata(L, 1, "mqtt.socket");
- sint8 espconn_status = 0;
- if (mud->connected) {
- uint8_t temp_buffer[MQTT_BUF_SIZE];
- mqtt_message_buffer_t msgb;
- mqtt_msg_init(&msgb, temp_buffer, MQTT_BUF_SIZE);
- // Send disconnect message
- mqtt_message_t* temp_msg = mqtt_msg_disconnect(&msgb);
- NODE_DBG("Send MQTT disconnect infomation, data len: %d, d[0]=%d \r\n", temp_msg->length, temp_msg->data[0]);
- if (!msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg, 0,
- MQTT_MSG_TYPE_DISCONNECT, 0))
- goto err;
- mqtt_send_if_possible(mud);
- }
- NODE_DBG("leave mqtt_socket_close.\n");
- return 0;
- err:
- /* OOM while trying to build the disconnect message. Fail the connection */
- mqtt_socket_do_disconnect(mud);
- NODE_DBG("leave mqtt_socket_close on error path\n");
- return 0;
- }
- // Lua: mqtt:on( "method", function() )
- static int mqtt_socket_on( lua_State* L )
- {
- NODE_DBG("enter mqtt_socket_on.\n");
- lmqtt_userdata *mud;
- size_t sl;
- mud = (lmqtt_userdata *)luaL_checkudata(L, 1, "mqtt.socket");
- luaL_checktype(L, 3, LUA_TFUNCTION);
- lua_pushvalue(L, 3); // copy argument (func) to the top of stack
- static const char * const cbnames[] = {
- "connect", "connfail", "offline",
- "message", "overflow",
- "puback", "suback", "unsuback",
- NULL
- };
- switch (luaL_checkoption(L, 2, NULL, cbnames)) {
- case 0:
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_ref);
- mud->cb_connect_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- break;
- case 1:
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_connect_fail_ref);
- mud->cb_connect_fail_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- break;
- case 2:
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_disconnect_ref);
- mud->cb_disconnect_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- break;
- case 3:
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_message_ref);
- mud->cb_message_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- break;
- case 4:
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_overflow_ref);
- mud->cb_overflow_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- break;
- case 5:
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_puback_ref);
- mud->cb_puback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- break;
- case 6:
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_suback_ref);
- mud->cb_suback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- break;
- case 7:
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_unsuback_ref);
- mud->cb_unsuback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- break;
- }
- NODE_DBG("leave mqtt_socket_on.\n");
- return 0;
- }
- // Lua: bool = mqtt:unsubscribe(topic, function())
- static int mqtt_socket_unsubscribe( lua_State* L ) {
- NODE_DBG("enter mqtt_socket_unsubscribe.\n");
- uint8_t stack = 1;
- uint16_t msg_id;
- const char *topic;
- size_t il;
- lmqtt_userdata *mud;
- mud = (lmqtt_userdata *) luaL_checkudata( L, stack, "mqtt.socket" );
- stack++;
- if(!mud->connected){
- luaL_error( L, "not connected" );
- lua_pushboolean(L, 0);
- return 1;
- }
- uint8_t temp_buffer[MQTT_BUF_SIZE];
- mqtt_message_buffer_t msgb;
- mqtt_msg_init(&msgb, temp_buffer, MQTT_BUF_SIZE);
- mqtt_message_t *temp_msg = NULL;
- if( lua_istable( L, stack ) ) {
- NODE_DBG("unsubscribe table\n");
- lua_pushnil( L ); /* first key */
- int topic_count = 0;
- uint8_t overflow = 0;
- while( lua_next( L, stack ) != 0 ) {
- topic = luaL_checkstring( L, -2 );
- if (topic_count == 0) {
- msg_id = mqtt_next_message_id(mud);
- temp_msg = mqtt_msg_unsubscribe_init( &msgb, msg_id );
- }
- temp_msg = mqtt_msg_unsubscribe_topic( &msgb, topic );
- topic_count++;
- NODE_DBG("topic: %s - length: %d\n", topic, temp_msg->length);
- if (temp_msg->length == 0) {
- lua_pop(L, 1);
- overflow = 1;
- break; // too long message for the outbuffer.
- }
- lua_pop( L, 1 );
- }
- if (topic_count == 0){
- return luaL_error( L, "no topics found" );
- }
- if (overflow != 0){
- return luaL_error( L, "buffer overflow, can't enqueue all unsubscriptions" );
- }
- temp_msg = mqtt_msg_unsubscribe_fini( &msgb );
- if (temp_msg->length == 0) {
- return luaL_error( L, "buffer overflow, can't enqueue all unsubscriptions" );
- }
- stack++;
- } else {
- NODE_DBG("unsubscribe string\n");
- topic = luaL_checklstring( L, stack, &il );
- stack++;
- if( topic == NULL ){
- return luaL_error( L, "need topic name" );
- }
- msg_id = mqtt_next_message_id(mud);
- temp_msg = mqtt_msg_unsubscribe( &msgb, topic, msg_id );
- }
- if (lua_isfunction(L, stack)) { // TODO: this will overwrite the previous one.
- lua_pushvalue( L, stack ); // copy argument (func) to the top of stack
- luaL_unref( L, LUA_REGISTRYINDEX, mud->cb_unsuback_ref );
- mud->cb_unsuback_ref = luaL_ref( L, LUA_REGISTRYINDEX );
- }
- msg_queue_t *node = msg_enqueue( &(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_UNSUBSCRIBE, (int)mqtt_get_qos(temp_msg->data) );
- NODE_DBG("topic: %s - id: %d - qos: %d, length: %d\n", topic, node->msg_id, node->publish_qos, node->msg.length);
- NODE_DBG("msg_size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- sint8 espconn_status = ESPCONN_IF;
- espconn_status = mqtt_send_if_possible(mud);
- if(!node || espconn_status != ESPCONN_OK){
- lua_pushboolean(L, 0);
- } else {
- lua_pushboolean(L, 1); // enqueued succeed.
- }
- NODE_DBG("unsubscribe, queue size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- NODE_DBG("leave mqtt_socket_unsubscribe.\n");
- return 1;
- }
- // Lua: bool = mqtt:subscribe(topic, qos, function())
- static int mqtt_socket_subscribe( lua_State* L ) {
- NODE_DBG("enter mqtt_socket_subscribe.\n");
- uint8_t stack = 1, qos = 0;
- uint16_t msg_id;
- const char *topic;
- size_t il;
- lmqtt_userdata *mud;
- mud = (lmqtt_userdata *) luaL_checkudata( L, stack, "mqtt.socket" );
- stack++;
- if(!mud->connected){
- luaL_error( L, "not connected" );
- lua_pushboolean(L, 0);
- return 1;
- }
- uint8_t temp_buffer[MQTT_BUF_SIZE];
- mqtt_message_buffer_t msgb;
- mqtt_msg_init(&msgb, temp_buffer, MQTT_BUF_SIZE);
- mqtt_message_t *temp_msg = NULL;
- if( lua_istable( L, stack ) ) {
- NODE_DBG("subscribe table\n");
- lua_pushnil( L ); /* first key */
- int topic_count = 0;
- uint8_t overflow = 0;
- while( lua_next( L, stack ) != 0 ) {
- topic = luaL_checkstring( L, -2 );
- qos = luaL_checkinteger( L, -1 );
- if (topic_count == 0) {
- msg_id = mqtt_next_message_id(mud);
- temp_msg = mqtt_msg_subscribe_init( &msgb, msg_id );
- }
- temp_msg = mqtt_msg_subscribe_topic( &msgb, topic, qos );
- topic_count++;
- NODE_DBG("topic: %s - qos: %d, length: %d\n", topic, qos, temp_msg->length);
- if (temp_msg->length == 0) {
- lua_pop(L, 1);
- overflow = 1;
- break; // too long message for the outbuffer.
- }
- lua_pop( L, 1 );
- }
- if (topic_count == 0){
- return luaL_error( L, "no topics found" );
- }
- if (overflow != 0){
- return luaL_error( L, "buffer overflow, can't enqueue all subscriptions" );
- }
- temp_msg = mqtt_msg_subscribe_fini( &msgb );
- if (temp_msg->length == 0) {
- return luaL_error( L, "buffer overflow, can't enqueue all subscriptions" );
- }
- stack++;
- } else {
- NODE_DBG("subscribe string\n");
- topic = luaL_checklstring( L, stack, &il );
- stack++;
- if( topic == NULL ){
- return luaL_error( L, "need topic name" );
- }
- qos = luaL_checkinteger( L, stack );
- msg_id = mqtt_next_message_id(mud);
- temp_msg = mqtt_msg_subscribe( &msgb, topic, qos, msg_id );
- stack++;
- }
- if (lua_isfunction(L, stack)) { // TODO: this will overwrite the previous one.
- lua_pushvalue( L, stack ); // copy argument (func) to the top of stack
- luaL_unref( L, LUA_REGISTRYINDEX, mud->cb_suback_ref );
- mud->cb_suback_ref = luaL_ref( L, LUA_REGISTRYINDEX );
- }
- msg_queue_t *node = msg_enqueue( &(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_SUBSCRIBE, (int)mqtt_get_qos(temp_msg->data) );
- NODE_DBG("topic: %s - id: %d - qos: %d, length: %d\n", topic, node->msg_id, node->publish_qos, node->msg.length);
- NODE_DBG("msg_size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- sint8 espconn_status = ESPCONN_IF;
- espconn_status = mqtt_send_if_possible(mud);
- if(!node || espconn_status != ESPCONN_OK){
- lua_pushboolean(L, 0);
- } else {
- lua_pushboolean(L, 1); // enqueued succeed.
- }
- NODE_DBG("subscribe, queue size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- NODE_DBG("leave mqtt_socket_subscribe.\n");
- return 1;
- }
- // Lua: bool = mqtt:publish( topic, payload, qos, retain, function() )
- static int mqtt_socket_publish( lua_State* L )
- {
- NODE_DBG("enter mqtt_socket_publish.\n");
- lmqtt_userdata *mud;
- size_t l;
- uint8_t stack = 1;
- uint16_t msg_id = 0;
- mud = (lmqtt_userdata *)luaL_checkudata(L, stack, "mqtt.socket");
- stack++;
- if(!mud->connected){
- return luaL_error( L, "not connected" );
- }
- const char *topic = luaL_checklstring( L, stack, &l );
- stack ++;
- if (topic == NULL){
- return luaL_error( L, "need topic" );
- }
- const char *payload = luaL_checklstring( L, stack, &l );
- stack ++;
- uint8_t qos = luaL_checkinteger( L, stack);
- stack ++;
- uint8_t retain = luaL_checkinteger( L, stack);
- stack ++;
- if (qos != 0) {
- msg_id = mqtt_next_message_id(mud);
- }
- uint8_t temp_buffer[MQTT_BUF_SIZE];
- mqtt_message_buffer_t msgb;
- mqtt_msg_init(&msgb, temp_buffer, MQTT_BUF_SIZE);
- mqtt_message_t *temp_msg = mqtt_msg_publish(&msgb,
- topic, payload, l,
- qos, retain,
- msg_id);
- if (lua_isfunction(L, stack)){
- lua_pushvalue(L, stack); // copy argument (func) to the top of stack
- luaL_unref(L, LUA_REGISTRYINDEX, mud->cb_puback_ref);
- mud->cb_puback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- }
- msg_queue_t *node = msg_enqueue(&(mud->mqtt_state.pending_msg_q), temp_msg,
- msg_id, MQTT_MSG_TYPE_PUBLISH, (int)qos );
- sint8 espconn_status = ESPCONN_OK;
- espconn_status = mqtt_send_if_possible(mud);
- if(!node || espconn_status != ESPCONN_OK){
- lua_pushboolean(L, 0);
- } else {
- lua_pushboolean(L, 1); // enqueued succeed.
- }
- NODE_DBG("publish, queue size: %d\n", msg_size(&(mud->mqtt_state.pending_msg_q)));
- NODE_DBG("leave mqtt_socket_publish.\n");
- return 1;
- }
- // Lua: mqtt:lwt( topic, message, [qos, [retain]])
- static int mqtt_socket_lwt( lua_State* L )
- {
- NODE_DBG("enter mqtt_socket_lwt.\n");
- lmqtt_userdata *mud = luaL_checkudata( L, 1, "mqtt.socket" );
- luaL_argcheck( L, lua_isstring(L, 2), 2, "need lwt topic");
- luaL_argcheck( L, lua_isstring(L, 3), 3, "need lwt message");
- lua_pushvalue(L, 2);
- luaL_reref(L, LUA_REGISTRYINDEX, &mud->conf.will_topic_ref);
- lua_pushvalue(L, 3);
- luaL_reref(L, LUA_REGISTRYINDEX, &mud->conf.will_message_ref);
- int stack = 4;
- if ( lua_isnumber(L, stack) )
- {
- mud->conf.flags.will_qos = lua_tointeger(L, stack) & 0x3;
- stack++;
- }
- if ( lua_isnumber(L, stack) )
- {
- mud->conf.flags.will_retain = !!lua_tointeger(L, stack);
- stack++;
- }
- NODE_DBG("leave mqtt_socket_lwt.\n");
- return 0;
- }
- // Module function map
- LROT_BEGIN(mqtt_socket, NULL, LROT_MASK_GC_INDEX)
- LROT_FUNCENTRY( __gc, mqtt_delete )
- LROT_TABENTRY( __index, mqtt_socket )
- LROT_FUNCENTRY( connect, mqtt_socket_connect )
- LROT_FUNCENTRY( close, mqtt_socket_close )
- LROT_FUNCENTRY( publish, mqtt_socket_publish )
- LROT_FUNCENTRY( subscribe, mqtt_socket_subscribe )
- LROT_FUNCENTRY( unsubscribe, mqtt_socket_unsubscribe )
- LROT_FUNCENTRY( lwt, mqtt_socket_lwt )
- LROT_FUNCENTRY( on, mqtt_socket_on )
- LROT_END(mqtt_socket, NULL, LROT_MASK_GC_INDEX)
- LROT_BEGIN(mqtt, NULL, 0)
- LROT_FUNCENTRY( Client, mqtt_socket_client )
- LROT_NUMENTRY( CONN_FAIL_SERVER_NOT_FOUND, MQTT_CONN_FAIL_SERVER_NOT_FOUND )
- LROT_NUMENTRY( CONN_FAIL_NOT_A_CONNACK_MSG, MQTT_CONN_FAIL_NOT_A_CONNACK_MSG )
- LROT_NUMENTRY( CONN_FAIL_DNS, MQTT_CONN_FAIL_DNS )
- LROT_NUMENTRY( CONN_FAIL_TIMEOUT_RECEIVING, MQTT_CONN_FAIL_TIMEOUT_RECEIVING )
- LROT_NUMENTRY( CONN_FAIL_TIMEOUT_SENDING, MQTT_CONN_FAIL_TIMEOUT_SENDING )
- LROT_NUMENTRY( CONNACK_ACCEPTED, MQTT_CONNACK_ACCEPTED )
- LROT_NUMENTRY( CONNACK_REFUSED_PROTOCOL_VER, MQTT_CONNACK_REFUSED_PROTOCOL_VER )
- LROT_NUMENTRY( CONNACK_REFUSED_ID_REJECTED, MQTT_CONNACK_REFUSED_ID_REJECTED )
- LROT_NUMENTRY( CONNACK_REFUSED_SERVER_UNAVAILABLE, MQTT_CONNACK_REFUSED_SERVER_UNAVAILABLE )
- LROT_NUMENTRY( CONNACK_REFUSED_BAD_USER_OR_PASS, MQTT_CONNACK_REFUSED_BAD_USER_OR_PASS )
- LROT_NUMENTRY( CONNACK_REFUSED_NOT_AUTHORIZED, MQTT_CONNACK_REFUSED_NOT_AUTHORIZED )
- LROT_END(mqtt, NULL, 0)
- int luaopen_mqtt( lua_State *L )
- {
- luaL_rometatable(L, "mqtt.socket", LROT_TABLEREF(mqtt_socket));
- return 0;
- }
- NODEMCU_MODULE(MQTT, "mqtt", mqtt, luaopen_mqtt);
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