URL:
https://github.com/SSSD/sssd/pull/43
Title: #43: RESPONDER: Enable sudoRule in case insen. domains​ (1.15)
celestian commented:
"""
I found function:
```
char *
sss_get_cased_name(TALLOC_CTX *mem_ctx,
const char *orig_name,
bool case_sensitive)
```
in ```src/util/usertools.c``` during backreporting to 1.13. If it is our prefered way how
to lowered usernames, I should use it.
"""
See the full comment at
https://github.com/SSSD/sssd/pull/43#issuecomment-258358616