with a new endpoint '/sys/audit-hash', which returns the given input
string hashed with the given audit backend's hash function and salt
(currently, always HMAC-SHA256 and a backend-specific salt).
In the process of adding the HTTP handler, this also removes the custom
HTTP handlers for the other audit endpoints, which were simply
forwarding to the logical system backend. This means that the various
audit functions will now redirect correctly from a standby to master.
(Tests all pass.)
Fixes#784
You can now turn on and off the lease behavior in the generic backend by
using one of two factories. Core uses the normal one if it's not already
set, so unit tests can use the custom one and all stay working.
This also adds logic into core to check, when the response is coming
from a generic backend, whether that backend has leases enabled. This
adds some slight overhead.
/cc @armon - I do a key copy within Unseal now. It tripped me up for
quite awhile that that method actually modifies the param in-place and I
can't think of any scenario that is good for the user. Do you see any
issues here?
