wekan/packages/wekan-ldap/client/loginHelper.js

// Pass in username, password as normal
// customLdapOptions should be passed in if you want to override LDAP_DEFAULTS
// on any particular call (if you have multiple ldap servers you'd like to connect to)
// You'll likely want to set the dn value here {dn: "..."}
Meteor.loginWithLDAP = function(username, password, customLdapOptions, callback) {
  // Retrieve arguments as array
  const args = [];
  for (let i = 0; i < arguments.length; i++) {
    args.push(arguments[i]);
  }
  // Pull username and password
  username = args.shift();
  password = args.shift();

  // Check if last argument is a function
  // if it is, pop it off and set callback to it
  if (typeof args[args.length-1] === 'function') {
    callback = args.pop();
  } else {
    callback = null;
  }

  // if args still holds options item, grab it
  if (args.length > 0) {
    customLdapOptions = args.shift();
  } else {
    customLdapOptions = {};
  }

  // Set up loginRequest object
  const loginRequest = {
    ldap: true,
    username,
    ldapPass: password,
    ldapOptions: customLdapOptions,
  };

  Accounts.callLoginMethod({
    // Call login method with ldap = true
    // This will hook into our login handler for ldap
    methodArguments: [loginRequest],
    userCallback(error/*, result*/) {
      if (error) {
        if (callback) {
          callback(error);
        }
      } else if (callback) {
        callback();
      }
    },
  });
};