Builtin plugins cannot be overridden in mounts
Before versioning, plugins with the same names as builtins (e.g., "kv")
could be registered, but trying to mount them would always use the
builtin versions.
With versioning, we still allow registering plugins with the same name
as a builtin. However, if the user tries to mount a versioned plugin
with the same name as a builtin, and specifies the non-builtin version
be used, we return an error.
Otherwise the user would see a confusing situation where the one or
both of the Version and RunningVersion would say they were using
the user-requested version, but in reality were using the builtin
version.
Co-authored-by: Tom Proctor <tomhjp@users.noreply.github.com>
* Add -plugin-version flag to vault auth/secrets tune
* CLI tests for auth/secrets tune
* CLI test for plugin register
* Plugin catalog listing bug where plugins of different type with the same name could be double counted
* Use constant for -plugin-version flag name
Check if plugin version matches running version
When registering a plugin, we check if the request version matches the
self-reported version from the plugin. If these do not match, we log a
warning.
This uncovered a few missing pieces for getting the database version
code fully working.
We added an environment variable that helps us unit test the running
version behavior as well, but only for approle, postgresql, and consul
plugins.
Return 400 on plugin not found or version mismatch
Populate the running SHA256 of plugins in the mount and auth tables (#17217)
Add plugin version to GRPC interface
Added a version interface in the sdk/logical so that it can be shared between all plugin types, and then wired it up to RunningVersion in the mounts, auth list, and database systems.
I've tested that this works with auth, database, and secrets plugin types, with the following logic to populate RunningVersion:
If a plugin has a PluginVersion() method implemented, then that is used
If not, and the plugin is built into the Vault binary, then the go.mod version is used
Otherwise, the it will be the empty string.
My apologies for the length of this PR.
* Placeholder backend should be external
We use a placeholder backend (previously a framework.Backend) before a
GRPC plugin is lazy-loaded. This makes us later think the plugin is a
builtin plugin.
So we added a `placeholderBackend` type that overrides the
`IsExternal()` method so that later we know that the plugin is external,
and don't give it a default builtin version.
