* Move the authorizer into its own package.
The Authorizer and associated functions and constants have been moved into
their own package `authz`. This will allow us to more easily create separate
services for gRPC functionality so that we're not pushing as much into the
`lib/auth` package.
Though this PR is large, the only actual code change here is making
`ContextForLocalUser` exported and changing the `permissions_test.go` so that
it doesn't rely on the `lib/auth` package.
* Use context functions.
* Test and linting fixes.
* Add in a temporary alias file to ensure e still compiles.
* Use functions instead of var aliases for performance reasons.
* Adding in godocs, cleaning up tests.
* Fix tests.
* Add a few more aliases.
This adds the target (which may be a user, role, node, login, etc)
to the lock.create audit event.
In order to do this, I had to break the dependency from events->types,
but that was a minimal change.
Fixes#15644
* Embed auth.Cache in auth.Server
* Hit the backend during Auth initialization
* Bypass the cache when rotating CAs
* Services.UpsertTrustedCluster is different
* Bypass the cache in waitForTunnelConnections
* Fix infinite recursion
* More cache bypassing during init and rotations
* Rename Services to Uncached in auth.Server
* Further cleanups
* Don't start the auth cache immediately
* Go back to Services rather than Uncached
* Comments and a missing method
* Fix goroutine and memory leak in watchCertAuthorities
The CA Watcher was blocking both on writing to a channel when the watcher
was closed and on HTTP calls that had no request timeout or context passed
to cause cancellation.
All resourceWatcher implementations that had a bug which may cause them to block
on writing to a channel forever were fixed by selecting on the write and ctx.Done.
Adding context.Context to all Get/Put/Post/Delete methods on the auth HTTPClient to
force callers to propagate context. Prior all calls used context.TODO which
prevents requests from being properly cancelled.
Add context propagation to RotateCertAuthority, RotateExternalCertAuthority,
GetCertAuthority, GetCertAuthorities. This is needed to get the correct ctx
from the CertAtuhorityWatcher all the way down to the HTTPClient that makes
the call.
Closes#10648
* Refactor most uses of `UserMetadata` into a handful of functions
* Add access requests to `UserMetadata`
* Explanation for the reserved field in SessionStart
Michael Wilson