Check LDAP password with SHA512

Arran Cudbard-Bell a.cudbardb at
Thu Jan 28 01:55:58 CET 2016

> You should be aware that the crypt() function is not threadsafe, and as such is protected by a mutex.  If you're only processing a few hundred authentications a second, that's fine, but it will cause issues when you get to thousands or tens of thousands.

Just pushed a fix to v3.1.x branch to use crypt_r. OSX doesn't seem to have it, but Linux does.

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