// Lua: s = net.create(type, secure/timeout, function(conn))
static int net_create( lua_State* L, const char* mt )
{
NODE_DBG("net_create is called.\n");
struct espconn *pesp_conn = NULL;
lnet_userdata *nud, *temp = NULL;
unsigned type;
#ifdef CLIENT_SSL_ENABLE
unsigned secure = 0;
#endif
uint8_t stack = 1;
bool isserver = false;
if (mt!=NULL && c_strcmp(mt, "net.server")==0)
isserver = true;
else if (mt!=NULL && c_strcmp(mt, "net.socket")==0)
isserver = false;
else
{
NODE_DBG("wrong metatable for net_create.\n");
return 0;
}
type = luaL_checkinteger( L, stack );
if ( type != ESPCONN_TCP && type != ESPCONN_UDP )
return luaL_error( L, "wrong arg type" );
stack++;
#ifdef CLIENT_SSL_ENABLE
if(!isserver){
if ( lua_isnumber(L, stack) )
{
secure = lua_tointeger(L, stack);
stack++;
if ( secure != 0 && secure != 1 ){
return luaL_error( L, "wrong arg type" );
}
} else {
secure = 0; // default to 0
}
}
#endif
if(isserver && type == ESPCONN_TCP){
if ( lua_isnumber(L, stack) )
{
unsigned to = lua_tointeger(L, stack);
stack++;
if ( to < 1 || to > 28800 ){
return luaL_error( L, "wrong arg type" );
}
tcp_server_timeover = (uint16_t)to;
} else {
tcp_server_timeover = 30; // default to 30
}
}
// create a object
nud = (lnet_userdata *)lua_newuserdata(L, sizeof(lnet_userdata));
// pre-initialize it, in case of errors
nud->self_ref = LUA_NOREF;
nud->cb_connect_ref = LUA_NOREF;
nud->cb_reconnect_ref = LUA_NOREF;
nud->cb_disconnect_ref = LUA_NOREF;
nud->cb_receive_ref = LUA_NOREF;
nud->cb_send_ref = LUA_NOREF;
nud->cb_dns_found_ref = LUA_NOREF;
nud->pesp_conn = NULL;
#ifdef CLIENT_SSL_ENABLE
nud->secure = secure;
#endif
// set its metatable
luaL_getmetatable(L, mt);
lua_setmetatable(L, -2);
// create the espconn struct
if(isserver && type==ESPCONN_TCP && pTcpServer){
if(tcpserver_cb_connect_ref != LUA_NOREF){ // self_ref should be unref in close()
lua_pop(L,1);
return luaL_error(L, "only one tcp server allowed");
}
pesp_conn = nud->pesp_conn = pTcpServer;
} else if(isserver && type==ESPCONN_UDP && pUdpServer){
temp = (lnet_userdata *)pUdpServer->reverse;
if(temp && temp->self_ref != LUA_NOREF){
lua_pop(L,1);
return luaL_error(L, "only one udp server allowed");
}
pesp_conn = nud->pesp_conn = pUdpServer;
} else {
pesp_conn = nud->pesp_conn = (struct espconn *)c_zalloc(sizeof(struct espconn));
if(!pesp_conn)
return luaL_error(L, "not enough memory");
pesp_conn->proto.tcp = NULL;
pesp_conn->proto.udp = NULL;
pesp_conn->reverse = NULL;
if( type==ESPCONN_TCP )
{
pesp_conn->proto.tcp = (esp_tcp *)c_zalloc(sizeof(esp_tcp));
if(!pesp_conn->proto.tcp){
c_free(pesp_conn);
pesp_conn = nud->pesp_conn = NULL;
return luaL_error(L, "not enough memory");
}
NODE_DBG("TCP server/socket is set.\n");
}
else if( type==ESPCONN_UDP )
{
pesp_conn->proto.udp = (esp_udp *)c_zalloc(sizeof(esp_udp));
if(!pesp_conn->proto.udp){
c_free(pesp_conn);
pesp_conn = nud->pesp_conn = NULL;
return luaL_error(L, "not enough memory");
}
NODE_DBG("UDP server/socket is set.\n");
}
}
pesp_conn->type = type;
pesp_conn->state = ESPCONN_NONE;
// reverse is for the callback function
pesp_conn->reverse = nud;
if(isserver && type==ESPCONN_TCP && pTcpServer==NULL){
pTcpServer = pesp_conn;
} else if(isserver && type==ESPCONN_UDP && pUdpServer==NULL){
pUdpServer = pesp_conn;
}
gL = L; // global L for net module.
// if call back function is specified, call it with para userdata
// luaL_checkanyfunction(L, 2);
if (lua_type(L, stack) == LUA_TFUNCTION || lua_type(L, stack) == LUA_TLIGHTFUNCTION){
lua_pushvalue(L, stack); // copy argument (func) to the top of stack
lua_pushvalue(L, -2); // copy the self_ref(userdata) to the top
lua_call(L, 1, 0);
}
return 1;
}
// Lua: mqtt.Client(clientid, keepalive, user, pass)
static int mqtt_socket_client( lua_State* L )
{
NODE_DBG("enter mqtt_socket_client.\n");
lmqtt_userdata *mud;
char tempid[20] = {0};
c_sprintf(tempid, "%s%x", "NodeMCU_", system_get_chip_id() );
NODE_DBG_(tempid);
NODE_DBG("\n");
const char *clientId = tempid, *username = NULL, *password = NULL;
size_t idl = c_strlen(tempid);
size_t unl = 0, pwl = 0;
int keepalive = 0;
int stack = 1;
unsigned secure = 0;
int top = lua_gettop(L);
// create a object
mud = (lmqtt_userdata *)lua_newuserdata(L, sizeof(lmqtt_userdata));
// pre-initialize it, in case of errors
mud->L = NULL;
mud->self_ref = LUA_NOREF;
mud->cb_connect_ref = LUA_NOREF;
mud->cb_disconnect_ref = LUA_NOREF;
mud->cb_message_ref = LUA_NOREF;
mud->cb_suback_ref = LUA_NOREF;
mud->cb_puback_ref = LUA_NOREF;
mud->pesp_conn = NULL;
mud->secure = 0;
mud->keep_alive_tick = 0;
mud->event_timeout = 0;
mud->connState = MQTT_INIT;
mud->connected = false;
c_memset(&mud->mqttTimer, 0, sizeof(ETSTimer));
c_memset(&mud->mqtt_state, 0, sizeof(mqtt_state_t));
c_memset(&mud->connect_info, 0, sizeof(mqtt_connect_info_t));
// set its metatable
luaL_getmetatable(L, "mqtt.socket");
lua_setmetatable(L, -2);
mud->L = L; // L for mqtt module.
if( lua_isstring(L,stack) ) // deal with the clientid string
{
clientId = luaL_checklstring( L, stack, &idl );
stack++;
}
if(lua_isnumber( L, stack ))
{
keepalive = luaL_checkinteger( L, stack);
stack++;
}
if(keepalive == 0){
keepalive = MQTT_DEFAULT_KEEPALIVE;
}
if(lua_isstring( L, stack )){
username = luaL_checklstring( L, stack, &unl );
stack++;
}
if(username == NULL)
unl = 0;
NODE_DBG("lengh username: %d\r\n", unl);
if(lua_isstring( L, stack )){
password = luaL_checklstring( L, stack, &pwl );
stack++;
}
if(password == NULL)
pwl = 0;
NODE_DBG("lengh password: %d\r\n", pwl);
// TODO: check the zalloc result.
mud->connect_info.client_id = (uint8_t *)c_zalloc(idl+1);
mud->connect_info.username = (uint8_t *)c_zalloc(unl + 1);
mud->connect_info.password = (uint8_t *)c_zalloc(pwl + 1);
if(!mud->connect_info.client_id || !mud->connect_info.username || !mud->connect_info.password){
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;
}
return luaL_error(L, "not enough memory");
}
c_memcpy(mud->connect_info.client_id, clientId, idl);
mud->connect_info.client_id[idl] = 0;
c_memcpy(mud->connect_info.username, username, unl);
mud->connect_info.username[unl] = 0;
c_memcpy(mud->connect_info.password, password, pwl);
mud->connect_info.password[pwl] = 0;
NODE_DBG("MQTT: Init info: %s, %s, %s\r\n", mud->connect_info.client_id, mud->connect_info.username, mud->connect_info.password);
mud->connect_info.clean_session = 1;
mud->connect_info.will_qos = 0;
mud->connect_info.will_retain = 0;
mud->connect_info.keepalive = keepalive;
mud->mqtt_state.pending_msg_q = NULL;
mud->mqtt_state.auto_reconnect = 0;
mud->mqtt_state.port = 1883;
mud->mqtt_state.connect_info = &mud->connect_info;
NODE_DBG("leave mqtt_socket_client.\n");
return 1;
}
// Lua: mqtt:connect( host, port, secure, auto_reconnect, function(client) )
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;
unsigned secure = 0, auto_reconnect = 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->connected){
return luaL_error(L, "already connected");
}
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 = false;
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();
mud->mqtt_state.port = 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
if ( (stack<=top) && lua_isnumber(L, stack) )
{
auto_reconnect = lua_tointeger(L, stack);
stack++;
if ( auto_reconnect != 0 && auto_reconnect != 1 ){
auto_reconnect = 0; // default to 0
}
} else {
auto_reconnect = 0; // default to 0
}
mud->mqtt_state.auto_reconnect = auto_reconnect;
// 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);
os_timer_disarm(&mud->mqttTimer);
os_timer_setfn(&mud->mqttTimer, (os_timer_func_t *)mqtt_socket_timer, mud);
// timer started in socket_connect()
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);
}
NODE_DBG("leave mqtt_socket_connect.\n");
return 0;
}
// Lua: mqtt:lwt( topic, message, qos, retain, function(client) )
static int mqtt_socket_lwt( lua_State* L )
{
NODE_DBG("enter mqtt_socket_lwt.\n");
uint8_t stack = 1;
size_t topicSize, msgSize;
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, &msgSize );
if (lwtMsg == NULL)
{
return luaL_error( L, "need lwt message");
}
if(mud->connect_info.will_topic){ // free the previous one if there is any
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;
}
mud->connect_info.will_topic = (uint8_t*) c_zalloc( topicSize + 1 );
mud->connect_info.will_message = (uint8_t*) c_zalloc( msgSize + 1 );
if(!mud->connect_info.will_topic || !mud->connect_info.will_message){
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;
}
return luaL_error( L, "not enough memory");
}
c_memcpy(mud->connect_info.will_topic, lwtTopic, topicSize);
mud->connect_info.will_topic[topicSize] = 0;
c_memcpy(mud->connect_info.will_message, lwtMsg, msgSize);
mud->connect_info.will_message[msgSize] = 0;
if ( lua_isnumber(L, stack) )
{
mud->connect_info.will_qos = lua_tointeger(L, stack);
stack++;
}
if ( lua_isnumber(L, stack) )
{
mud->connect_info.will_retain = lua_tointeger(L, stack);
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);
NODE_DBG("leave mqtt_socket_lwt.\n");
return 0;
}
