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

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

var mustache = require('mustache');

module.exports = function (RED) {
  function loginUserNode(config) {

    RED.nodes.createNode(this, config);

    var node = this;
    // we get the properties
    node.url = config.url;
    node.baseDN = config.baseDN;
    node.filter = config.filter;
    node.attributes = config.attributes;

    // we get the credentials
    var cUsername = this.credentials.username;
    var cPassword = this.credentials.password;
    var fUsername;


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

      if (msg.payload.username) fUsername = msg.payload.username;

      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));
      }

      try {

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

        client.bind(cUsername, cPassword, 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: cUsername, 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: "search"
            });

            var isTemplatedUrl = (node.filter || "").indexOf("{{") != -1;
            var attributes = node.attributes.replace(/ /g, '').split(",");
            var filter = node.filter;

            if (isTemplatedUrl) {
              filter = '' + mustache.render(filter, msg);
            }

            var opts = {
              filter: filter, //'(&(objectCategory=Person)(objectClass=User)(samaccountname=' + fUsername + '))',
              scope: 'sub',
              attributes: attributes, //['objectGUID', 'emailAddress', 'departmentNumber', 'title', 'userPrincipalName', 'memberOf', 'sn', 'givenName', 'mail']
            };

            client.search(node.baseDN /*'dc=ukrgas, dc=bank, dc=local'*/, opts, function (error, search) {

              var vresult = false;
              var eobject = {};

              search.on('searchEntry', function (entry) {
                //console.log('---searchEntry');                        
                if (entry.object) {
                  vresult = true;
                  eobject = entry.object;
                }
              });
              search.on('searchReference', function (referral) {
                //console.log('---searchReference');
                //console.log('referral: ' + referral.uris.join());
              });
              search.on('error', function (error) {
                //console.log('---error');
                //console.error('error: ' + error.message);
                msg.payload = { user: fUsername, find: false, message: "Search Error " + error.message };
                node.send(msg);
              });
              search.on('end', function (result) {
                //console.log('---end');
                //console.log('status: ' + result.status);
                //console.log('---result '+vresult);
                client.unbind(function (error) {
                  if (error) { console.log(error.message); } 
                });
                msg.payload = { user: fUsername, find: vresult, message: eobject };
                node.send(msg);
              });

            });

          }
        });
      } catch (e) {
        node.status({
          fill: "red",
          shape: "dot",
          text: "connexion error"
        });
        node.error("ERROR connecting: " + e.message);
      }
    });
  }

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

};