Filter with umlauts does not work

[simon-kolkmann]

When searching a value that contains umlauts, the filter string is encoded in a way our AD does not seem to understand. It does not return any search results. When searching values without umlauts everything works fine.

Minimal reproduction:

import ldapjs from 'ldapjs'

const { EqualityFilter } = ldapjs

console.log(
	new EqualityFilter({
		attribute: `member`,
		value: 'CN=abcö'
	}).toString()
) // -> "(member=CN=abc\c3\b6)"

I didn't have this problem with ldapjs v2. Any idea how to fix this?

EDIT: I found escapeFilterValue und RFC4515, so this seems to work as expected. I'm still not sure if our active directory is to blame, I'm part of a larger corporation and I haven't heard of similar problems in other apps.

[jsumners]

Duplicate of #860. Please see that thread.