ldap-types crate

[Iizuki]

Hey @keaz!

Have you looked at the ldap-types crate? It contains pretty solid looking LDAP related types, that we could maybe make use of to increase type safety.

E.g. DistinguishedName, KeyString and in particular the neat looking LDAPSearchFilter type that could potentially replace our Filter trait.

[keaz]

Hi @Iizuki, I'll check this on this weekend.

[Iizuki]

For the record, I've been using the ldap_types::DistinguishedName for a while now and it's pretty painful.. The issue is that it faithfully accommodates the LDAP specification, which allows you to store almost anything in a DN. Having multiple keyvalue pairs in single relative DN and apparently even binary.

So we probably don't want to include that.

On the other hand it would be handy to define a SimpleDn type that just parses the usual CN=name,OU=org,OU=upper-org,DC=institute,DC=com DNs. Probably it wouldn't be very hard with something like chumsky or even a regex.