Bug when user cn has utf8 characters

[ansibleguy76]

Add function :

function unescapeLdapResult(ldapResult) {
  // Regular expression to match the escaped sequences
  const regex = /\\([0-9a-fA-F]{2})\\([0-9a-fA-F]{2})/g;

  // Replace each escaped sequence with its Unicode character
  return ldapResult.replace(regex, (match, p1, p2) => {
      // Convert the hex codes to a Buffer
      const bytes = Buffer.from([parseInt(p1, 16), parseInt(p2, 16)]);
      // Convert the Buffer to a UTF-8 String
      return bytes.toString('utf8');
  });
}

and use it to unescape the result :

  ldapAdminClient.unbind()
  if (!user || !user.dn) {
    ldapOpts.log &&
      ldapOpts.log.trace(
        `admin did not find user! (${usernameAttribute}=${username})`
      )
    throw new LdapAuthenticationError(
      'user not found or usernameAttribute is wrong'
    )
  }
  var userDn = user.dn
  userDn = unescapeLdapResult(userDn)
  let ldapUserClient
  try {
    ldapUserClient = await _ldapBind(userDn, userPassword, starttls, ldapOpts)
  } catch (error) {
    throw error
  }
  ldapUserClient.unbind()
  if (groupsSearchBase && groupClass && groupMemberAttribute) {
    try {
      ldapAdminClient = await _ldapBind(