node-red-contrib-lifesmart
Version:
A Node-RED node for Lifesmart smart home gateway integration with local device control and management
632 lines (589 loc) • 28.8 kB
JavaScript
/**
* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
const dgram = require("dgram");
const os = require("os");
module.exports = function(RED) {
"use strict";
var os = require('os');
var dgram = require('dgram');
var udpInputPortsInUse = {};
var lifesmartIDObj = {};
// The Input Node
function Lifesmartin(n) {
RED.nodes.createNode(this,n);
this.group = n.group;
this.port = n.port ;
this.datatype = n.datatype;
this.iface = n.iface || null;
this.multicast = n.multicast;
this.ipv = n.ipv || "udp4";
var node = this;
if (node.iface && node.iface.indexOf(".") === -1) {
try {
if ((os.networkInterfaces())[node.iface][0].hasOwnProperty("scopeid")) {
if (node.ipv === "udp4") {
node.iface = (os.networkInterfaces())[node.iface][1].address;
} else {
node.iface = (os.networkInterfaces())[node.iface][0].address;
}
}
else {
if (node.ipv === "udp4") {
node.iface = (os.networkInterfaces())[node.iface][0].address;
} else {
node.iface = (os.networkInterfaces())[node.iface][1].address;
}
}
}
catch(e) {
node.warn(RED._("udp.errors.ifnotfound",{iface:node.iface}));
node.iface = null;
}
}
var opts = {type:node.ipv, reuseAddr:true};
if (process.version.indexOf("v0.10") === 0) { opts = node.ipv; }
var server;
if (!udpInputPortsInUse.hasOwnProperty(node.port)) {
server = dgram.createSocket(opts); // default to udp4
server.bind(node.port, function() {
if (node.multicast == "true") {
server.setBroadcast(true);
server.setMulticastLoopback(false);
try {
server.setMulticastTTL(128);
server.addMembership(node.group,node.iface);
if (node.iface) { node.status({text:n.iface+" : "+node.iface}); }
node.log(RED._("udp.status.mc-group",{group:node.group}));
} catch (e) {
if (e.errno == "EINVAL") {
node.error(RED._("udp.errors.bad-mcaddress"));
} else if (e.errno == "ENODEV") {
node.error(RED._("udp.errors.interface"));
} else {
node.error(RED._("udp.errors.error",{error:e.errno}));
}
}
}
});
udpInputPortsInUse[node.port] = server;
}
else {
node.log(RED._("udp.errors.alreadyused",{port:node.port}));
server = udpInputPortsInUse[node.port]; // re-use existing
if (node.iface) { node.status({text:n.iface+" : "+node.iface}); }
}
server.on("error", function (err) {
if ((err.code == "EACCES") && (node.port < 1024)) {
node.error(RED._("udp.errors.access-error"));
} else {
node.error(RED._("udp.errors.error",{error:err.code}));
}
server.close();
});
server.on('message', function (message, remote) {
var msg;
if (node.datatype =="base64") {
msg = { payload:message.toString('base64'), fromip:remote.address+':'+remote.port, ip:remote.address, port:remote.port };
} else if (node.datatype =="utf8") {
msg = { payload:message.toString('utf8'), fromip:remote.address+':'+remote.port, ip:remote.address, port:remote.port };
} else {
msg = { payload:message, fromip:remote.address+':'+remote.port, ip:remote.address, port:remote.port };
}
let result = msg.payload;
node.log("===============message==================");
node.log(result);
if(result.indexOf("JL") == 0){
result = result.substring(10);
if(isJSON(result)){
var requestObj = JSON.parse(result);
if(requestObj.id && lifesmartIDObj[requestObj.id]){
msg.ssid = lifesmartIDObj[requestObj.id];
if(msg.ssid == "lifesmart_device_search" && requestObj.msg && Array.isArray(requestObj.msg)){
//格式化数据
var deviceTypeObj = {
"SL_SW_ND": "switch",
"SL_SW_ND1": "switch",
"SL_SW_ND2": "switch",
"SL_SW_ND3": "switch",
"SL_CN_IF": "blind",
"SL_P": "blind",
"ZG#HE200_ZB": "humansensor",
"SL_SC_BM": "humansensor",
"SL_SC_CM": "humansensor",
"SL_OL_3C": "plugin",
"SL_OE_W": "plugin",
"SL_OL_W": "plugin",
};
var devices = requestObj.msg;
var newDevices = [];
for(var i = 0; i < devices.length; i++){
var deviceInfo = {};
deviceInfo.extends = {
gateway:requestObj.agtid,
devtype:devices[i].devtype,
fulltype:devices[i].fulltype,
me:devices[i].me
};
deviceInfo.factory = "yq";
deviceInfo.name = devices[i].name;
deviceInfo.id = requestObj.agtid+"_"+devices[i].me;
deviceInfo.type = deviceTypeObj[devices[i].devtype] || "unknown";
if(deviceInfo.type == "switch"){ //开关类型提供按键信息
deviceInfo.keys = [];
for (var key in devices[i].data) {
if(key.indexOf("L") == 0){
deviceInfo.keys.push({
name:key
})
}
}
}
newDevices.push(deviceInfo);
}
requestObj.msg = newDevices;
result = JSON.stringify(requestObj)
}
delete lifesmartIDObj[requestObj.id];
}
}
msg.payload = result;
}else if(result.indexOf("LSID=") != -1 && result.indexOf("NAME=") != -1){
msg.ssid = "lifesmart_gateway_search";
var gateway = {};
var resultArr = result.split("\n");
for(var i = 0; i < resultArr.length; i++){
var itemArr = resultArr[i].split("=");
if(itemArr[0] == "LSID"){
gateway.id = itemArr[1];
}else if(itemArr[0] == "NAME"){
gateway.name = itemArr[1];
}
}
if(msg.ip){
gateway.ip = msg.ip;
}
if(msg.port){
gateway.port = msg.port;
}
gateway.factory = "yq";
msg.payload = JSON.stringify(gateway);
}
node.send(msg);
});
server.on('listening', function () {
var address = server.address();
node.log(RED._("udp.status.listener-at",{host:node.iface||address.address,port:address.port}));
});
node.on("close", function() {
try {
if (node.multicast == "true") { server.dropMembership(node.group); }
server.close();
node.log(RED._("udp.status.listener-stopped"));
} catch (err) {
//node.error(err);
}
if (udpInputPortsInUse.hasOwnProperty(node.port)) {
delete udpInputPortsInUse[node.port];
}
node.status({});
});
}
// RED.httpAdmin.get('/udp-ports/:id', RED.auth.needsPermission('udp-ports.read'), function(req,res) {
// res.json(Object.keys(udpInputPortsInUse));
// });
RED.nodes.registerType("lifesmart in",Lifesmartin);
// The Output Node
function lifesmartout(n) {
RED.nodes.createNode(this,n);
//this.group = n.group;
this.port = n.port;
this.outport = n.outport||"";
this.base64 = n.base64;
this.addr = n.addr;
this.iface = n.iface || null;
this.multicast = n.multicast;
this.ipv = n.ipv || "udp4";
var node = this;
if (node.iface && node.iface.indexOf(".") === -1) {
try {
if ((os.networkInterfaces())[node.iface][0].hasOwnProperty("scopeid")) {
if (node.ipv === "udp4") {
node.iface = (os.networkInterfaces())[node.iface][1].address;
} else {
node.iface = (os.networkInterfaces())[node.iface][0].address;
}
}
else {
if (node.ipv === "udp4") {
node.iface = (os.networkInterfaces())[node.iface][0].address;
} else {
node.iface = (os.networkInterfaces())[node.iface][1].address;
}
}
}
catch(e) {
node.warn(RED._("udp.errors.ifnotfound",{iface:node.iface}));
node.iface = null;
}
}
var opts = {type:node.ipv, reuseAddr:true};
var sock;
var p = this.outport || this.port || "0";
node.tout = setTimeout(function() {
if ((p != 0) && udpInputPortsInUse[p]) {
sock = udpInputPortsInUse[p];
if (node.multicast != "false") {
sock.setBroadcast(true);
sock.setMulticastLoopback(false);
}
node.log(RED._("udp.status.re-use",{outport:node.outport,host:node.addr,port:node.port}));
if (node.iface) { node.status({text:n.iface+" : "+node.iface}); }
}
else {
sock = dgram.createSocket(opts); // default to udp4
if (node.multicast != "false") {
sock.bind(node.outport, function() { // have to bind before you can enable broadcast...
sock.setBroadcast(true); // turn on broadcast
sock.setMulticastLoopback(false); // turn off loopback
if (node.multicast == "multi") {
try {
sock.setMulticastTTL(128);
sock.addMembership(node.addr,node.iface); // Add to the multicast group
if (node.iface) { node.status({text:n.iface+" : "+node.iface}); }
node.log(RED._("udp.status.mc-ready",{iface:node.iface,outport:node.outport,host:node.addr,port:node.port}));
} catch (e) {
if (e.errno == "EINVAL") {
node.error(RED._("udp.errors.bad-mcaddress"));
} else if (e.errno == "ENODEV") {
node.error(RED._("udp.errors.interface"));
} else {
node.error(RED._("udp.errors.error",{error:e.errno}));
}
}
} else {
node.log(RED._("udp.status.bc-ready",{outport:node.outport,host:node.addr,port:node.port}));
}
});
} else if ((node.outport !== "") && (!udpInputPortsInUse[node.outport])) {
sock.bind(node.outport);
node.log(RED._("udp.status.ready",{outport:node.outport,host:node.addr,port:node.port}));
} else {
node.log(RED._("udp.status.ready-nolocal",{host:node.addr,port:node.port}));
}
sock.on("error", function(err) {
// Any async error will also get reported in the sock.send call.
// This handler is needed to ensure the error marked as handled to
// prevent it going to the global error handler and shutting node-red
// down.
});
udpInputPortsInUse[p] = sock;
}
node.on("input", function(msg, nodeSend, nodeDone) {
var add = node.addr || msg.ip || "";
var por = node.port || msg.port || 12348;
var id = Math.round(Math.random()*999);
if(typeof msg.ssid != "undefined" && msg.ssid){
lifesmartIDObj[id] = msg.ssid;
}
if (add === "") {
node.warn(RED._("udp.errors.ip-notset"));
nodeDone();
} else if (por === 0) {
node.warn(RED._("udp.errors.port-notset"));
nodeDone();
} else if (isNaN(por) || (por < 1) || (por > 65535)) {
node.warn(RED._("udp.errors.port-invalid"));
nodeDone();
} else {
var message;
//根据不同的请求类型，组装不同指令
let action = msg.action
if(action == "control"){
let args = msg.args;
node.log("++++++++++++++++control++++++++++++++++++++"+add+":"+por);
node.log(JSON.stringify(args));
message = control_devices(args, id);
sock.send(message, 0, message.length, por, add, function(err, bytes) {
if (err) {
node.error("udp : "+err,msg);
}
message = null;
nodeDone();
});
}else if(action == "devices"){
message = get_devices("eps", id);
node.log("++++++++++++++++devices++++++++++++++++++++"+add+":"+por);
sock.send(message, 0, message.length, por, add, function(err, bytes) {
if (err) {
node.error("udp : "+err,msg);
}
message = null;
nodeDone();
});
}else if(action == "gateways"){
message = "Z-SEARCH * \r\n";
node.log("++++++++++++++++gateways++++++++++++++++++++"+add+":"+por);
sock.send(message, 0, message.length, por, add, function(err, bytes) {
if (err) {
node.error("udp : "+err,msg);
}
message = null;
nodeDone();
});
}
}
});
}, 75);
node.on("close", function() {
if (node.tout) { clearTimeout(node.tout); }
try {
if (node.multicast == "multi") { sock.dropMembership(node.group); }
sock.close();
node.log(RED._("udp.status.output-stopped"));
} catch (err) {
//node.error(err);
}
if (udpInputPortsInUse.hasOwnProperty(p)) {
delete udpInputPortsInUse[p];
}
node.status({});
});
}
RED.nodes.registerType("lifesmart out",lifesmartout);
function control_device(idx, me, type, val, id){
var time = parseInt(new Date().getTime() / 1000);
if(typeof id == "undefined" || !id){
id = Math.round(Math.random()*999);
}
var signStr = "obj:ep,idx:"+idx+",me:"+me+",tag:geeqee,type:"+type+",val:"+val+",ts:"+time+",model:OD_LEAD_FUTURE,token:BMP4MZvU62t89avkyGDO7g";
var sendStr = '{"id":'+id+',"args":{"idx":"'+idx+'","me":"'+me+'","tag":"geeqee","type":'+type+',"val":'+val+'},"obj":"ep","sys":{"ver":1,"ts":'+time+',"sign":"'+hex_md5(signStr)+'","model":"OD_LEAD_FUTURE"}}';
sendStr = JSON.stringify(JSON.parse(sendStr));
var sendStrLenHex =sendStr.length.toString(16).padStart(4,'0'); //不全四位字符： 00b9
var headStr = "4A4C000000030000" + sendStrLenHex;
var head = new Buffer(headStr, "hex");
var sendStrBuffer = new Buffer(sendStr)
var list = [head, sendStrBuffer];
var newbuff = Buffer.concat(list);
return newbuff;
}
function control_devices(args, id){
var time = parseInt(new Date().getTime() / 1000);
if(typeof id == "undefined" || !id){
id = Math.round(Math.random()*999);
}
var signStr = "obj:eps,ts:"+time+",model:OD_LEAD_FUTURE,token:BMP4MZvU62t89avkyGDO7g";
var sendStr = '{"id":'+id+',"obj":"eps","sys":{"ver":1,"ts":'+time+',"sign":"'+hex_md5(signStr)+'","model":"OD_LEAD_FUTURE"}}';
var sendStrObj = JSON.parse(sendStr);
sendStrObj.args = args;
sendStr = JSON.stringify(sendStrObj);
var sendStrLenHex =sendStr.length.toString(16).padStart(4,'0'); //不全四位字符： 00b9
var headStr = "4A4C000000030000" + sendStrLenHex;
var head = new Buffer(headStr, "hex");
var sendStrBuffer = new Buffer(sendStr)
var list = [head, sendStrBuffer];
var newbuff = Buffer.concat(list);
return newbuff;
}
//type支持 eps-设备 sence-场景
function get_devices(type, id){
var time = parseInt(new Date().getTime() / 1000);
if(typeof id == "undefined" || !id){
id = Math.round(Math.random()*999);
}
var signStr = "obj:eps,ts:"+time+",model:OD_LEAD_FUTURE,token:BMP4MZvU62t89avkyGDO7g";
var sendStr = '{"id":'+id+',"args":[],"obj":"'+type+'","sys":{"ver":1,"ts":'+time+',"sign":"'+hex_md5(signStr)+'","model":"OD_LEAD_FUTURE"}}';
sendStr = JSON.stringify(JSON.parse(sendStr));
var sendStrLenHex =sendStr.length.toString(16).padStart(4,'0'); //不全四位字符： 00b9
var headStr = "4A4C000000010000" + sendStrLenHex;
var head = new Buffer(headStr, "hex");
var sendStrBuffer = new Buffer(sendStr)
var list = [head, sendStrBuffer];
var newbuff = Buffer.concat(list);
return newbuff;
}
function isJSON(str) {
if (typeof str == 'string') {
try {
JSON.parse(str);
return true;
} catch(e) {
return false;
}
}
}
var hexcase = 0;
var b64pad = "";
var chrsz = 8;
let lmd5 = {};
function core_md5(x, len) {
/* append padding */
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for (var i = 0; i < x.length; i += 16) {
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
}
return Array(a, b, c, d);
}
function md5_cmn(q, a, b, x, s, t) {
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
}
function md5_ff(a, b, c, d, x, s, t) {
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t) {
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t) {
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t) {
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
function core_hmac_md5(key, data) {
var bkey = str2binl(key);
if (bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);
var ipad = Array(16), opad = Array(16);
for (var i = 0; i < 16; i++) {
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}
var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
return core_md5(opad.concat(hash), 512 + 128);
}
function safe_add(x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
function bit_rol(num, cnt) {
return (num << cnt) | (num >>> (32 - cnt));
}
function str2binl(str) {
var bin = Array();
var mask = (1 << chrsz) - 1;
for (var i = 0; i < str.length * chrsz; i += chrsz)
bin[i >> 5] |= (str.charCodeAt(i / chrsz) & mask) << (i % 32);
return bin;
}
function binl2str(bin) {
var str = "";
var mask = (1 << chrsz) - 1;
for (var i = 0; i < bin.length * 32; i += chrsz)
str += String.fromCharCode((bin[i >> 5] >>> (i % 32)) & mask);
return str;
}
function binl2hex(binarray) {
var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var str = "";
for (var i = 0; i < binarray.length * 4; i++) {
str += hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF) +
hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8)) & 0xF);
}
return str;
}
function binl2b64(binarray) {
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var str = "";
for (var i = 0; i < binarray.length * 4; i += 3) {
var triplet = (((binarray[i >> 2] >> 8 * (i % 4)) & 0xFF) << 16)
| (((binarray[i + 1 >> 2] >> 8 * ((i + 1) % 4)) & 0xFF) << 8)
| ((binarray[i + 2 >> 2] >> 8 * ((i + 2) % 4)) & 0xFF);
for (var j = 0; j < 4; j++) {
if (i * 8 + j * 6 > binarray.length * 32) str += b64pad;
else str += tab.charAt((triplet >> 6 * (3 - j)) & 0x3F);
}
}
return str;
}
function hex_md5(s) {
return binl2hex(core_md5(str2binl(s), s.length * chrsz));
}
}