index.js
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"use strict";
const express = require('express');
const app = express();
const SerialPort = require("serialport");
const config = require('./config.json');
const request = require('request');
const Readline = require('@serialport/parser-readline');
const Delimiter = require('@serialport/parser-delimiter');
let count = 1;
let statusModem = "0K";
let errorMessageModem= "";
//set serialport
const serialPort = new SerialPort(config.core.usb_port, {
baudRate: 115200
});
const parser = serialPort.pipe(new Readline());
serialPort.on("open", function () {
console.log('Serial communication open');
//
serialPort.write("AT+CNMI?");
serialPort.write("\r");
//serialPort.write("AT+CNMI=1,1,2,1,1");
//serialPort.write("\r");
console.log('receive sms ON');
});
serialPort.on('error', function(err) {
statusModem = "NOT OK";
errorMessageModem = err.message;
console.log('Error!: ', err.message);
process.exit(1);
});
parser.on('data', function(data) {
console.log("incoming data: " + data);
let lastData = data.toString();
if (lastData.match(/\+CMTI:/)){
let numberPattern = /(\d+)/g;
let slot = lastData.match(numberPattern);
console.log("slot "+slot);
console.log("ada message baru");
readSmsAuto(serialPort, slot);
}
});
//function delete message slot ke?
function deleteMessage(serialPort, slot){
serialPort.write("AT+CMGD="+slot);
serialPort.write("\r");
console.log("delete pesan slot "+slot+" done!");
}
//post to end point url
function postIncomingMessage(nomor, pesan){
console.log("----------------------------post incoming message-------------------------");
pesan = pesan.replace(/\s+$/, '');
let encodePesan = encodeURIComponent(pesan);
let newUrl = config.core.url_post+"?msg="+encodePesan+"&number="+nomor;
//post to URL end Point
request(newUrl, function (error, response, body) {
if (error) {
console.log("error post! "+nomor+" msg; \""+pesan+"\" errornya; "+error.message);
} else if (!error && response.statusCode == 200) {
console.log("success post "+nomor+" msg; \""+pesan+"\" resp; "+body);
}
});
}
//sendSms
function sendSms (req, res, next){
let msg = req.query.msg;
let number = req.query.number;
let reqid = req.query.reqid;
let apiKey = req.query.apikey;
//apiKey="746573206D6F64656D2074656C6D6F73656C20666C617368";
if(!reqid||!apiKey){
console.log("invalid reqid or apikey;msg "+msg+" number "+number);
res.json({"status": "invalid parameter", "msg": msg, "number": number, "apikey" : apikey, "reqid": reqid});
return;
} else if (apiKey !== config.core.api_key){
console.log("invalid apiKey;msg \""+msg+"\" number \""+number+"\" reqid \""+reqid);
res.json({"status": "invalid parameter", "msg": msg, "number": number, "apikey" : apikey, "reqid": reqid});
return;
}
console.log("msg "+ msg + " number " +number);
//----------------
serialPort.write("AT+CMGF=1");
serialPort.write('\r');
sendingSMS(serialPort, msg, "+"+number, reqid);
console.log('resp; status '+statusModem+" reqid "+reqid);
//---------------
res.json({"status": statusModem+" "+errorMessageModem, "msg": msg, "number": number});
}
//send ussd
function sendUSSD (req, res, next){
let msg = req.query.msg;
let reqid = req.query.reqid;
let apiKey = req.query.apikey;
//apiKey="746573206D6F64656D2074656C6D6F73656C20666C617368";
if(!reqid||!apiKey){
console.log("invalid reqid or apikey;msg "+msg);
res.json({"status": "invalid parameter", "msg": msg, "apikey" : apikey, "reqid": reqid});
return;
} else if (apiKey !== config.core.api_key){
console.log("invalid apiKey;msg \""+msg+"\"reqid \""+reqid);
res.json({"status": "invalid parameter", "msg": msg, "apikey" : apikey, "reqid": reqid});
return;
}
console.log("msg "+ msg+" - "+reqid);
count++;
console.log("count "+ count);
if (count > 2){
console.log("modem busy!");
count--;
res.json({status: "reject", msg: "modem busy,try a few second"});
return;
}
//----------------
serialPort.write("AT+CUSD=1,\""+msg+"\"");
serialPort.write('\r');
//parse response USSD
const parserUSSD = serialPort.pipe(new Delimiter({ delimiter: '\",0'}));
let respUssd = null;
parserUSSD.on('data',function(dataUSSD){
//console.log("incoming datad "+dataD);
let lastData = dataUSSD.toString();
console.log("incoming dataUSSD "+lastData);
respUssd = lastData;
serialPort.unpipe(parserUSSD);
});
console.log('resp; status '+statusModem+" reqid "+reqid);
//---------------
let countDown = 8;// max witing response USSD 8 detik
let waitingRespUssd = setInterval (() => {
console.log(countDown+" second for reqid "+reqid);
countDown--;
if (respUssd || countDown < 2){
let new_respUssd = null;
//console.log("response USSD; "+respUssd);
if (respUssd){
new_respUssd = respUssd.replace(/^[^ ]+\+CUSD:/, '\+CUSD:');
console.log('n_resp '+new_respUssd);
}
count--;
res.json({
"response_ussd": new_respUssd,
"status": statusModem+" "+errorMessageModem,
"msg": msg,
"reqid": reqid
});
clearInterval(waitingRespUssd);
}
},1000);
}
function readSmsAuto(serialPort, slot){
serialPort.write("AT+CMGR="+slot);// read only slot 1
serialPort.write('\r');
const parserD = serialPort.pipe(new Delimiter({ delimiter: '\r\nOK\r\n' }));
parserD.on('data',function(dataD){
//console.log("incoming datad "+dataD);
let lastData = dataD.toString();
console.log("incoming datad "+lastData);
if (lastData.match(/\+CMGR:/)){
console.log("incoming SMS "+lastData);
// try to parse dataD
const lines = lastData.split(/\n/);
console.log("lines1 "+lines[1]);
console.log("lines2 "+lines[2]);
const content = lines[1].split(',');
console.log("content0 "+content[0]);
console.log("content1 "+content[1]);
console.log("content2 "+content[2]);
console.log("content3 "+content[3]);
console.log("content4 "+content[4]);
let nomor = content[1].toString();
nomor = nomor.replace(/"/g,'');
nomor = nomor.replace(/\+/g,'');
let pesan = lines[2].toString();
console.log("nomor nya "+nomor);
serialPort.unpipe(parserD);
postIncomingMessage(nomor, pesan);
}
});
console.log("pesan slot "+slot+" sudah di baca");
setTimeout(function(){
serialPort.write("AT+CMGD="+slot);
serialPort.write("\r");
console.log("delete pesan slot "+slot+" done!");
}, 2000);
}
function readSms(req, res, next){
serialPort.write("AT+CMGF=1");
serialPort.write('\r');
serialPort.write('AT+CMGR=0');// read only slot 1
serialPort.write('\r');
res.send('sms readed');
}
function sendingSMS(serial, message, phone_no) {
if (statusModem === "NOT OK"){
console.log('send sms gagal');
return statusModem;
}
console.log('number '+phone_no);
serial.write("AT+CMGS=\"" + phone_no + "\"");
serial.write('\r');
serial.write(message);
console.log(message);
serial.write(Buffer([0x1A]));
serial.write('^z');
}
app.get('/sms', sendSms);
app.get('/ussd', sendUSSD);
app.get('/read', readSms);
app.listen(config.core.node_port, () => console.log(`Example app listening on port ${config.core.node_port}!`));