Configurable usage of UID in LDAP filters

    //const bindPassword = process.env.LDAP_BIND_PW

    const ldap_bd = process.env.LDAP_BINDDN

    const ldap_base = process.env.LDAP_BASE

    var mail = query.email 

    var uid = query.email.split('@')[0]

    const filterstr = '(&' + process.env.LDAP_GROUP_FILTER + '(' + ldapEscape.filter`uid=${uid}` + '))'

    var uid = query.email

    const filterstr = process.env.LDAP_GROUP_FILTER.replaceAll('%u', ldapEscape.filter`${uid}`)

    const userDn = ldapEscape.filter`uid=${uid}` + ',' + ldap_bd;

    var mail = ""

    var firstname = ""

    var lastname = ""

    var isAdmin = false

      // if admin filter is set - only set admin for user in ldap group

      // does not matter - admin is deactivated: managed through ldap

      if (process.env.LDAP_ADMIN_GROUP_FILTER) {

        const adminfilter = '(&' + process.env.LDAP_ADMIN_GROUP_FILTER + '(' +ldapEscape.filter`uid=${uid}` + '))' 

        const adminfilter = process.env.LDAP_ADMIN_GROUP_FILTER.replaceAll('%u', ldapEscape.filter`${uid}`)

        adminEntry = await client.search(ldap_base, {

          scope: 'sub',

          filter: adminfilter,