node-red-contrib-ldap-login/nodes/login-user.js

Node-RED node for Microsoft Active Directory (LDAP).

module.exports = function (RED) {


  function sendErrorMessage(node, text) {
    node.status({
        fill: 'red',
        shape: 'ring',
        text: text
    });
    node.error(text, msg);
  }

  function loginUserNode(config) {
    RED.nodes.createNode(this, config);

    var node = this;
    // we get the properties
    node.url = config.url;
    node.baseDN = config.baseDN;
    // we get the credentials
    var cUsername = this.credentials.username;
    var cPassword = this.credentials.password;

    console.log("0[" + cUsername + "][" + cPassword + "]");

    node.on("input", function (msg) {
      var chkUsername = "";
      var chkPassword = "";

      node.status({
        fill: "blue",
        shape: "ring",
        text: "connecting",
      });
      // import ldapjs
      var ldap = require("ldapjs");

      if (msg.payload.username) chkUsername = msg.payload.username;
      if (msg.payload.password) chkPassword = msg.payload.password;

      console.log("1[" + chkUsername + "][" + chkPassword + "]");

      var adConfig = {
        url: node.url,
        baseDN: node.baseDN,
        username: cUsername,
        password: cPassword,
      };

      // set attributes if defined
      if (msg.ad_attributes) {
        // Validates the Object format (required for IBMi platform)
        adConfig.attributes = JSON.parse(JSON.stringify(msg.ad_attributes));
      }
      if (msg.tlsOptions) {
        // Validates the Object format (required for IBMi platform)
        adConfig.tlsOptions = JSON.parse(JSON.stringify(msg.tlsOptions));
      }

      if (chkUsername === undefined || chkUsername.length === 0) {
        var text = "Empty Login";
        node.status({
          fill: "red",
          shape: "dot",
          text: text,
        });
        console.log("3[" + chkUsername + "][" + chkPassword + "]" + text);
        msg.payload = { user: chkUsername, login: false, message: text };
        node.send(msg);
        return;
      } else {
        if (chkPassword === undefined || chkPassword.length === 0) {
          var text = "Empty Password";
          node.status({
            fill: "red",
            shape: "dot",
            text: text,
          });
          console.log("[4" + chkUsername + "][" + chkPassword + "]" + text);
          msg.payload = { user: chkUsername, login: false, message: text };
          node.send(msg);
          return;
        }
      }

      console.log('--- try to bind --- ['+chkUsername+']');

      try {
        var client = ldap.createClient({
          url: node.url,
          timeout: 5000,
          connectTimeout: 10000,
        });
        node.status({
          fill: "green",
          shape: "dot",
          text: "connected",
        });

        client.bind(chkUsername, chkPassword, function (error) {
          //console.log('--- try to bind --- ['+username+']');
          node.status({
            fill: "blue",
            shape: "ring",
            text: "querying",
          });

          if (error) {
            //console.log(error.message);
            client.unbind(function (error) {
              if (error) {
                //console.log(error.message);} else{console.log('1 client disconnected');
              }
            });
            node.status({
              fill: "red",
              shape: "dot",
              text: "login error",
            });
            msg.payload = {
              user: chkUsername,
              login: false,
              message: error.message,
            };
            node.send(msg);
            //node.error('ERROR login: ' + error.message);
          } else {
            //console.log('connected');
            node.status({
              fill: "green",
              shape: "dot",
              text: "login",
            });
            client.unbind(function (error) {
              if (error) {
                //console.log(error.message);} else{console.log('1 client disconnected');
              }
            });
            msg.payload = { user: chkUsername, login: true, message: "" };
            node.send(msg);
          }
        });
      } catch (e) {
        node.status({
          fill: "red",
          shape: "dot",
          text: "connexion error",
        });
        node.error("ERROR connecting: " + e.message);
      }
    });
  }

  RED.nodes.registerType("login-user", loginUserNode, {
    credentials: {
      username: {
        type: "text",
      },
      password: {
        type: "password",
      },
    },
  });
};