Shinsei Bank Userscript - Login helper with optional Security Card auto-fill

shinseibank.user.js

// ==UserScript==
// @name         Shinsei Bank Helper
// @namespace    https://gist.github.com/apparition47/e8671954c614385b78ed9e8b2cde98e6
// @version      0.6
// @description  Disable Security Keyboard & Optional account/Security Card Login Auto-Fill
// @author       apparition47
// @match        https://*.shinseibank.com/FLEXCUBEAt/LiveConnect.dll*
// @match        http://www.shinseibank.com/*
// @grant        none
// ==/UserScript==

(() => {

  // --------------------------------
  // - START OPTIONAL USER SETTINGS -
  // --------------------------------

  //
  // OPTIONAL: input your security card for page 2 auto-fill
  //
  const secCard = {
    "A0": "",
    "B0": "",
    "C0": "",
    "D0": "",
    "E0": "",
    "F0": "",
    "G0": "",
    "H0": "",
    "I0": "",
    "J0": "",
    "A1": "",
    "B1": "",
    "C1": "",
    "D1": "",
    "E1": "",
    "F1": "",
    "G1": "",
    "H1": "",
    "I1": "",
    "J1": "",
    "A2": "",
    "B2": "",
    "C2": "",
    "D2": "",
    "E2": "",
    "F2": "",
    "G2": "",
    "H2": "",
    "I2": "",
    "J2": "",
    "A3": "",
    "B3": "",
    "C3": "",
    "D3": "",
    "E3": "",
    "F3": "",
    "G3": "",
    "H3": "",
    "I3": "",
    "J3": "",
    "A4": "",
    "B4": "",
    "C4": "",
    "D4": "",
    "E4": "",
    "F4": "",
    "G4": "",
    "H4": "",
    "I4": "",
    "J4": ""
  };

  //
  // OPTIONAL: input your account credentials for page 1 auto-fill
  // account # (10 digit), pin # (4 digit), password (>6 char)
  //
  const accountNo = "";
  const pin = "";
  const password = "";

  //
  // auto-login (only works if secCard and/or account credentials are filled out)
  //
  const autoLogin = true;

  // ------------------------------
  // - END OPTIONAL USER SETTINGS -
  // ------------------------------


  // japanese login link use new seccard-less website when possible
  window.getURL_jp = () => "https://bk.shinseibank.com/SFC/apps/services/www/SFC/desktopbrowser/default/login?mode=1"

  const isValidSecCard = (() => {
    for (var key in secCard) {
      if ( (`${secCard[key]}`).length !== 1 ) {
        return false
      }
    }
    return true
  })();

  // uncheck "Use the Security Keyboard"
  if (document.frmLogonInput && document.frmLogonInput.chksecmod) {
    document.frmLogonInput.chksecmod.checked = false

    // pressing RETURN key on a textfield will submit form
    document.querySelectorAll("input.textfield").forEach(input => {
      input.addEventListener("keyup", event => {
        event.preventDefault();
        if (event.keyCode === 13) { // RETURN key
          window.CheckLogonInputs(); // LOGIN button
        }
      });
    });

    // auto-fill if user entered account credentials
    if (document.frmLogonInput.fldUserID 
      && document.frmLogonInput.fldUserNumId 
      && document.frmLogonInput.fldUserPass
      && accountNo
      && pin
      && password
    ) {
      document.frmLogonInput.fldUserID.value = accountNo;
      document.frmLogonInput.fldUserNumId.value = pin;
      document.frmLogonInput.fldUserPass.value = password;
      if (autoLogin) {
        window.CheckLogonInputs();
      }
    }
  }

  // auto-fill if user entered their security card
  if (isValidSecCard && window.fldGridChallange1 && window.fldGridChallange2 && window.fldGridChallange3) {
    document.frmLogonInput.fldGridChg1.value = `${secCard[window.fldGridChallange1]}`.toUpperCase();
    document.frmLogonInput.fldGridChg2.value = `${secCard[window.fldGridChallange2]}`.toUpperCase();
    document.frmLogonInput.fldGridChg3.value = `${secCard[window.fldGridChallange3]}`.toUpperCase();
    if (autoLogin) {
      window.CheckLogonInputs();
    }
  }

})();