To prevent users from being able to directly connect to registered
OpenSSH (Agentless) nodes, the OpenSSH CA was introduced. When
connecting to Agentless nodes, the Proxy will forward the connection
so the session can be recorded. The forwarding SSH server is configured
to authenticate to the target node with a certificate signed by OpenSSH
CA, which users do not have access to.
Adds a new `GetCertAuthorities` unary RPC to
`teleport.v1.trust.TrustService` and deprecates the equivalent
HTTP endpoint. All associated interfaces have been updated to remove
the marshal options as well.
This PR removes the `types.KindKubeService` objects that were
deprecated in Teleport 11.
Teleport 12 removed the double heartbeat and for Teleport 13 we can
safely drop the support of the old hearbeat based on `types.Server`
objects.
Clients older than Teleport 12 connecting to a Teleport 13 server will
fail since they cannot heartbeat using the old mechanism.
Prior to the NodeWatcher being successfully initialized, or when
it became stale any calls to `GetNodes` would return no data or
stale data. This behavior results in the problems described in
#22672.
The NodeWatcher will now fallback to pulling data from the cache
in the event that it has no data or stale data when callers attempt
to retrieve nodes. This should reduce the time that it takes the
a new Proxy or a Proxy with intermittent connectivity issues to
Auth be able to route to nodes.
The impact of this change should be noticeable in tests that
create a Proxy and several Nodes and then immediately try to
open a session on the Nodes.
Closes#22672
Sets `http.Server.IdleTimeout` and `http.Client.IdleConnTimeout`
on clients and servers which didn't have them set. A default of
360s was chosen to be on par with the default of an NLB without
being identical.
This was added as another safety measure to prevent leaking any
idle connections indefinitely as seen in #22757.
`apidefaults.DefaultDialTimeout` was also renamed to
`apidefaults.DefaultIOTimeout` to better reflect its usage.
The HTTP client created by `auth.NewClient` has an idle timeout of
30s and each instance periodically gets cert authorities in
`TeleportProcess.syncRotationStateCycle`. If there has been no
activity when the ticker expires then the request will result in a
brand new connection to Auth to be established. This can cause a
spikes in open file descriptors on the Proxy when there are a large
number of instances connected via a tunnel.
To prevent periodic dialing when retrieving cert authorities the
endpoint has been migrated to the new Trust gRPC service. For now
only the get endpoint has been migrated but the rest of the CRUD
operations for cert authorities should be migrated from the HTTP
api to the gRPC service as well.
* Emit new `AgentMetadataEvent`
Part of https://github.com/gravitational/cloud/issues/3550.
This commits adds a new `UpstreamInventoryAgentMetadata` that is sent
from a Teleport agent to an auth server.
Once received, it is transformed into an `AgentMetadataEvent` and sent
to PreHog.
Most `UpstreamInventoryAgentMetadata` fields are intentionally kept as
empty in this PR. Follow up PRs will be opened with the mechanisms
required to fill them (as described in #21337).
* server_id -> host_id
* compute OS and host architecture
* Compute OS version and container runtime
* Close stream if agent receives an agent metadata message
* cmd -> exec ; file -> read
* implement fetchOSVersion for linux
* Remove unused import
* Add note about `agentMetadataCh`
* Allow commands with args
* Remove parseFun abstraction
* fetch glibc version
* fetch container orchestrator
* Fix lint
* Fix TODO
* Add note about glibc version
* cmd -> command
* fetch cloud environment
* fetch install methods
* GLibCVersion -> GlibcVersion
* Use `http.NewRequestWithContext`
* Add missing comment
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* GLibCVersion -> GlibcVersion
* Fix lint
* Fix helm unit tests
* Add missing comments
* 5 second timeout on http requests
* Spawn gorountine that fetches metadata on each new stream
* Use `defaults.HTTPClient()`
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* Add missing import
* Handle error
* Revert "Spawn gorountine that fetches metadata on each new stream"
This reverts commit fe4f2790be.
* Send agent metadata to auth server once per stream
* Improve note about agentMetadataDone
* Don't process command output & file content on the agent
Since agents cannot be trusted, regex validation and sanitization should
happen in PreHog anyways. So this commit removes such logic in favor of
moving it to PreHog.
* Fix lint
* Trim space
* Move handling of `AgentMetadataEvent` to `handleControlStream`
* Use cached hello message
* Move metadata files to lib/inventory/metadata
* make sending of agent metadata more self contained
* Minimize diff
* Send all system roles to PreHog
* Remove unused import
* Add parsing of command output / file content back
* Usage reporter refactor
* Usage reporter refactor
* Add missing handling of inventory agent metadata msg
* Fix ICS usage reporter
* Improve comments
* Add cached `metadata.Get*` methods
* Use systemctl status instead of is-active
* Add `Metadata` struct
* return pointer in `FetchMetadata`
* Pass context to `GetMetadata`
* metadataFetchConfig -> fetchConfig
* GetMetadata -> Get
* Add note about `Get` result
* Ensure install methods are non-nil
* Exit `metadata.Get` if context is closed
* Replace sync.Once with atomic.Bool.Swap
* Initialize channel
* Fix lint
* Fix lint
* Make `metadata.Get` return an error instead of bool
* Allow multiple true/false values for env vars
* Use `strings.Cut`
* Use /etc/os-release ID instead of NAME
* Improve `autoEmitMetadata`
* Use `gnu_get_libc_version`
* Ubuntu -> ubuntu
* Use GOARCH
* gofmt
* Move import C up
* Variables may include quotes
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* Default values for ID and VERSION_ID
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* Blank lines are permitted
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* Anonymize host id
---------
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* Move configuration from lib/service to lib/service/servicecfg
The new servicecfg package will hold only configuration for services.
This will allow other packages (like tctl and tsh) to depend on
servicecfg without pulling in all of lib/service (which has a number
of platform-specific details).
This is the first step towards being able to build tctl for Windows.
* Move PAM and BPF config into servicecfg
This breaks a compile-time dependency on BPF/PAM for tctl.
* 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.
* Swap out select for poll
wait_for_fd now uses poll instead of select, allowing us to wait for
file descriptors > 1024.
* Restructuring the function to simplify and adds a log statement on error
* Puts poll in a loop that checks for EINTR and EAGAIN
and calls it again if either of those errors were the source
of the error.
* Swap out select for poll
wait_for_fd now uses poll instead of select, allowing us to wait for
file descriptors > 1024.
* Restructuring the function to simplify and adds a log statement on error
* Allow node to handle old and new way of client IP propagation on same listener
With addition of signed PROXY headers, node was listening on multiplexer, but because
of that it couldn't processing incoming connection from older proxies
when ProxyHelloSignature was used, because
both ends were waiting for the other side to send data first.
Here we integrate ability to handle PROXY headers into connection itself,
so we can start ssh server without waiting for multiplexer to detect connection
* Remove unneeded code
* Improve comment's wording
Co-authored-by: Michael Wilson <mike@mdwn.dev>
* Improve comment's wording
Co-authored-by: Michael Wilson <mike@mdwn.dev>
* Fix imports
* Unexport function
* Add godoc
* Remove unneeded comment
* Move ProxyHelloSignature to constants
* Check that proxyline is verified
* Use Warn() instead of Warnf()
* Move ProxyHelloSignature to api/constants
* Add timeout for getting host CA during proxyline verification.
* Rearrange conditions
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* Clarify comment.
---------
Co-authored-by: Michael Wilson <mike@mdwn.dev>
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* make it easier to create registered openssh nodes with 'tctl'
Metadata.Name is set to a random UUID if it's unset, the requirement
to use '--force' when creating node resources is dropped, and more
checks for openssh node resources are added.
* added test coverage, renamed KindOpenSSHNode -> SubKindOpenSSHNode, added github.com/google/uuid to api/go.mod
* attempt to fix tests
* don't set node subkind if it's empty
* re-add test fix
The RBAC logic assumes that SSH connections to registered OpenSSH nodes
will always be proxied and terminated, which will come in a future PR.
Part of implementing #19261.
Changes the name to better align with the naming used by the rest
of the feature and to prevent ambiguity as the term proxy is quite
overloaded. This has not landed in a release yet so there are no
backward compatability concerns as nothing serves or consumes this
api yet.
* sshserver: Correctly handle PuTTY winadj channel requests
Fixes#19365
* Actually send a failure
* dispatch changes
* Reimplement wantReply handling
* Also handle windadj in forwarding server
* lint: Fix typo
* lint: Invert return order to put err last
* Use nil return payload instead
* Use trace.ReplyAlreadyHandled instead
* Handle reply internally and set req.WantReply to false
* Use t.Cleanup()
* behaviour is not a misspelling but whatever makes you happy
* Suggestions from code review
When a client sends an SSH session before the shell process ends, Teleport sends the SIGKILL signal to the subprocess. This causes the still-leaving shell to be resigned to PID 1 and live forever.
This PR tried to stop the terminal first before killing the subprocess to prevent the terminal from living forever.
Closes#13335Closes#6245Closes#4469
Completes the service implementation of the transportv1.Service.
Ensures that both SSH and SSH Agent protocols are multiplexed
correctly over the gRPC stream via TestService_ProxySSH.
Part of #19812
`auth.Middleware` to make use of them. This allows for less redundancy
per RPC and provides the ability to perform session control when grpc
connections are established.
The `auth.Middleware.withAuthenticatedUser` function was called from all
interceptors of any gRPC server that leveraged `auth.Middleware`. This
was constructing the identity of the client from the TLS certificate
per RPC. Since the identity of a connection cannot change between RPCs
there is no need to construct the identity in an interceptor. Instead,
the new `auth.TransportCredentials` can build the identity once after the
TLS handshake completes. When interceptors or gRPC handlers need to
acquire the identity they can do so using the same
mechanism via `peer.Peer.AuthInfo` and assert on the new `auth.IdentityInfo`
type:
```go
peerInfo, ok := peer.FromContext(ctx)
if !ok {
return
}
connInfo, ok := peerInfo.AuthInfo.(auth.IdentityInfo)
if !ok {
return
}
identity := connInfo.IdentityGetter.GetIdentity()
connState := connInfo.TLSInfo.State
```
The gRPC server that is served on the Proxy ssh port needs to hold the
same invariants as the ssh server available on the same port. This
means that connection limits need to be enforced when new connections
are established. To achieve this the new `auth.TransportCredentials` can
be provided with an `auth.ConnectionEnforcer` and an `auth.Authorizer`
to first build an identity, then ensures that the user is authorized and
finally that the user has not exceeded their connection limits.
Other minor changes include providing the cluster name to the
`auth.Middleware` instead of it looking the value up from the cache every
time an identity is created. Some interceptors were also moved around or
removed to eliminate the chances of having duplicate interceptors end up in
the interceptor chain.
Part of #19812
Provides a client that can be used to connect to and interact with
the transport service in `lib/srv/transport`. The client abstracts
the fact that a gRPC stream is being used for the `net.Conn` created
by `DialCluster` and `DialHost`.
This also moves `lib/utils/grpc/stream` to `api/utils/grpc/stream`
so that the client and server can make use of the same stream
abstractions.
Part of #19812
* Fix Moderated session on leave pause action.
* Unpause when moderator rejoins session with onLeave=pause
This commite fixes a case when the moderator rejoins a paused session
but Teleport didn't resume the operations and the session was still
locked to everyone.
* Fix panic when re-joining SSH session.
* Update lib/kube/proxy/sess.go
Co-authored-by: Noah Stride <noah.stride@goteleport.com>
* Update lib/kube/proxy/sess.go
Co-authored-by: Noah Stride <noah.stride@goteleport.com>
* Fix typo
Co-authored-by: Tiago Silva <tiago.silva@goteleport.com>
---------
Co-authored-by: Tiago Silva <tiago.silva@goteleport.com>
Co-authored-by: Noah Stride <noah.stride@goteleport.com>
* Start removing generateToken
* Refactor `tokens add` to use `CreateToken` RPC
* Correct deprecation version
* Remove calls to GenerateToken
* Start tests for token crud
* Allow user role rules to be provided wth CreateUserAndRole helper
* Add TestCreateToken to tls_test
* Add TestUpsertToken
* Add GetTokens test
* Add TestGetToken
* Add test for DeleteToken RPC
* Dedupe error assertions
* Add support for emitting trusted cluster token creation events to Create/UpsertToken
* Fix imports
* Change parameter order to appease linter
* Fix broken token expiry test
* Fix token expiry time for TestAuth_RegisterUsingToken
* Remove unnecessary cleanup
* Apply suggestions from code review
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
* Change test comment from deprecation notice
* `make gprc` after code review changes
* Update lib/auth/tls_test.go
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
* Update lib/auth/tls_test.go
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
* Update lib/auth/tls_test.go
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
* Update lib/auth/tls_test.go
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
* Rename tests
* Update lib/auth/tls_test.go
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
* More test cases for GetTokens
* Improve message on duplicate token
---------
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
* Add Device to LocketTarget proto
* Refactor LockTarget.Match
* Test lib/srv.ComputeLockTargets
* Test lib/services.LockTargetsFromTLSIdentity
* Test device lock during cert issuance
* Add device lock targets where applicable
* Add --device to `tctl lock`
* Fix godocs (unrelated)
* Review: Drop redundant comments
* Use test IP addresses for auth_proxy_test.
The auth_proxy_test file now uses IP addresses from the block `TEST-NET-3`
as specified in https://www.rfc-editor.org/rfc/rfc5735#section-3. Previously,
it was using `0.0.0.0` IP addresses. This has a chance of actually hitting
locally running services depending on the test runner setup, making the tests
non-deterministic. The hope here is that this change will avoid the spurious
test failures seen in CI.
* Update lib/srv/alpnproxy/auth/auth_proxy_test.go
Co-authored-by: Jakub Nyckowski <jakub.nyckowski@goteleport.com>
* Update lib/srv/alpnproxy/auth/auth_proxy_test.go
Co-authored-by: Jakub Nyckowski <jakub.nyckowski@goteleport.com>
* Update lib/srv/alpnproxy/auth/auth_proxy_test.go
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
* Add in comments about the 203.0.113.0/24 IP range.
---------
Co-authored-by: Jakub Nyckowski <jakub.nyckowski@goteleport.com>
Co-authored-by: Edoardo Spadolini <edoardo.spadolini@goteleport.com>
The first step in implementing the teleport.proxy.v1.ProxyServic
as defined in RFD 100. This includes part of the service
implementation and a stream abstraction to allow transporting
payloads for frames over a gRPC stream.
The proxy peering specific implementation of the stream abstraction
was refactored into `lib/utils/grpc/stream` so that other services
can make use of it.
Part of #19812
* Use `ctx` rather than `context.TODO()` where available
* Further propagation of context
* Use `context.Background()` instead of `context.TODO()` where appropriate in tests
* Further remove `context.TODO` from tests
* Appease linter on parameter order
Edoardo Spadolini