Software: Apache/2.4.41 (Ubuntu). PHP/8.0.30 

uname -a: Linux apirnd 5.4.0-204-generic #224-Ubuntu SMP Thu Dec 5 13:38:28 UTC 2024 x86_64 

uid=33(www-data) gid=33(www-data) groups=33(www-data) 

Safe-mode: OFF (not secure)

/var/www/html/server/   drwxr-xr-x
Free 13.06 GB of 57.97 GB (22.54%)
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Viewing file:     2777.js (3.38 KB)      -rw-r--r--

var smpp = require("smpp");
const { v4: uuidv4 } = require("uuid");
const fs = require("fs");
var server = smpp.createServer(
  {
    debug: false,
  },
  function (session) {
    session.on("error", function (err) {
      // Something ocurred, not listening for this event will terminate the program
    });
    session.on("bind_transceiver", function (pdu) {
      // we pause the session to prevent further incoming pdu events,
      // untill we authorize the session with some async operation.
      console.log("pdu");
      session.pause();
      // checkAsyncUserPass(pdu.system_id, pdu.password, function(err) {
      // if (err) {
      // 	console.log('error');
      // 	session.send(pdu.response({
      // 		command_status: smpp.ESME_RBINDFAIL
      // 	}));
      // 	session.close();
      // 	return;
      // }
      console.log("connected");
      session.send(pdu.response());
      session.resume();
      // });
    });

    session.on("submit_sm", async (pdu) => {
      console.log(pdu);
      var id = uuidv4();
      console.log("hello");
      session.send(pdu.response({ command_status: 0, message_id: id }));
      fs.appendFile("message.txt", id + "\n", function (err) {
        if (err) throw err;
        console.log("Saved!");
      });

      if (pdu.registered_delivery) {
        console.log("pdu deliver_sm");
        try {
          session.deliver_sm({
            receipted_message_id: id,
            user_message_reference: "message_id",
            esm_class: 4,
            message_state: 2,
            sequence_number: pdu.sequence_number + 1,
          });
        } catch (e) {
          console.log(e);
        }
      } else {
        console.log("delivery report not send");
        try {
          session.deliver_sm({
            receipted_message_id: "message_id",
            user_message_reference: "message_id",
            esm_class: 4,
            message_state: "UNDELIVERABLE",
            sequence_number: pdu.sequence_number + 1,
          });
        } catch (e) {
          console.log(e);
        }
      }
    });
    // Respond to an enquire link
    session.on("enquire_link", function (pdu) {
      console.log("enquire_link");
      session.send(pdu.response());
    });

    // Response to an enquire link
    session.on("enquire_link_resp", function (pdu) {
      counter = 0;
      console.log("enquire_link_resp");
    });

    // Listen to the unbind event and kill the process
    session.on("unbind", function (pdu) {
      session.send(pdu.response());
      console.log("unbind");
      session.close();
      // process.exit();
    });

    // Kill the process on an SMPP connection error
    session.on("error", function (error) {
      console.log("error");
      session.close();
      // process.exit(1);
    });

    // Kill the process when an SMPP connection is closed
    session.on("close", function () {
      console.log("close");
      // process.exit();
    });
  }
);

//check user valid or not
const checkAsyncUserPass = (systemId, password, is_valid) => {
  console.log("checking");
  var user = smpp_servers.filter((ser) => {
    return (
      ser.port === port &&
      ser.systemId === systemId &&
      ser.password === password
    );
  });
  is_valid(user.length);
};

server.listen(2777, () => {
  console.log("Server started on 2777");
});