mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-09-21 16:56:03 +00:00
482 lines
15 KiB
Go
482 lines
15 KiB
Go
package pubapi
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"net"
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"testing"
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"github.com/edgelesssys/constellation/coordinator/atls"
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"github.com/edgelesssys/constellation/coordinator/core"
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"github.com/edgelesssys/constellation/coordinator/peer"
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"github.com/edgelesssys/constellation/coordinator/pubapi/pubproto"
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"github.com/edgelesssys/constellation/coordinator/role"
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"github.com/edgelesssys/constellation/coordinator/state"
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"github.com/edgelesssys/constellation/coordinator/util/grpcutil"
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"github.com/edgelesssys/constellation/coordinator/util/testdialer"
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"github.com/edgelesssys/constellation/coordinator/vpnapi/vpnproto"
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"github.com/edgelesssys/constellation/internal/deploy/ssh"
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"github.com/edgelesssys/constellation/internal/deploy/user"
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"github.com/spf13/afero"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"go.uber.org/zap/zaptest"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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kubeadm "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3"
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)
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func TestActivateAsNode(t *testing.T) {
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someErr := errors.New("failed")
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peer1 := peer.Peer{PublicIP: "192.0.2.11:2000", VPNIP: "192.0.2.21", VPNPubKey: []byte{1, 2, 3}}
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peer2 := peer.Peer{PublicIP: "192.0.2.12:2000", VPNIP: "192.0.2.22", VPNPubKey: []byte{2, 3, 4}}
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sshUser1 := &ssh.UserKey{
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Username: "test-user-1",
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PublicKey: "ssh-rsa abcdefg",
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}
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sshUser2 := &ssh.UserKey{
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Username: "test-user-2",
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PublicKey: "ssh-ed25519 hijklmn",
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}
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testCases := map[string]struct {
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initialPeers []peer.Peer
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updatedPeers []peer.Peer
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state state.State
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getUpdateErr error
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setVPNIPErr error
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messageSequenceOverride []string
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wantErr bool
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wantState state.State
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sshKeys []*ssh.UserKey
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}{
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"basic": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.AcceptingInit,
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wantState: state.NodeWaitingForClusterJoin,
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},
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"basic with SSH users": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.AcceptingInit,
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wantState: state.NodeWaitingForClusterJoin,
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sshKeys: []*ssh.UserKey{sshUser1, sshUser2},
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},
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"already activated": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.IsNode,
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wantErr: true,
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wantState: state.IsNode,
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},
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"wrong peer kind": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.ActivatingNodes,
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wantErr: true,
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wantState: state.ActivatingNodes,
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},
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"GetUpdate error": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.AcceptingInit,
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getUpdateErr: someErr,
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wantState: state.NodeWaitingForClusterJoin,
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},
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"SetVPNIP error": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.AcceptingInit,
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setVPNIPErr: someErr,
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wantErr: true,
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wantState: state.Failed,
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},
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"no messages sent to node": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.AcceptingInit,
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messageSequenceOverride: []string{},
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wantErr: true,
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wantState: state.AcceptingInit,
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},
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"only initial message sent to node": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.AcceptingInit,
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messageSequenceOverride: []string{"initialRequest"},
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wantErr: true,
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wantState: state.Failed,
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},
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"wrong initial message sent to node": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.AcceptingInit,
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messageSequenceOverride: []string{"stateDiskKey"},
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wantErr: true,
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wantState: state.AcceptingInit,
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},
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"initial message sent twice to node": {
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initialPeers: []peer.Peer{peer1},
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updatedPeers: []peer.Peer{peer2},
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state: state.AcceptingInit,
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messageSequenceOverride: []string{"initialRequest", "initialRequest"},
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wantErr: true,
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wantState: state.Failed,
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},
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}
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for name, tc := range testCases {
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t.Run(name, func(t *testing.T) {
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assert := assert.New(t)
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require := require.New(t)
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const (
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nodeIP = "192.0.2.2"
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nodeVPNIP = "10.118.0.2"
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)
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vpnPubKey := []byte{7, 8, 9}
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ownerID := []byte("ownerID")
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clusterID := []byte("clusterID")
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stateDiskKey := []byte("stateDiskKey")
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messageSequence := []string{"initialRequest", "stateDiskKey"}
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if tc.messageSequenceOverride != nil {
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messageSequence = tc.messageSequenceOverride
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}
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logger := zaptest.NewLogger(t)
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fs := afero.NewMemMapFs()
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linuxUserManager := user.NewLinuxUserManagerFake(fs)
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cor := &fakeCore{state: tc.state, vpnPubKey: vpnPubKey, setVPNIPErr: tc.setVPNIPErr, linuxUserManager: linuxUserManager}
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netDialer := testdialer.NewBufconnDialer()
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dialer := grpcutil.NewDialer(fakeValidator{}, netDialer)
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api := New(logger, cor, dialer, nil, nil, nil)
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defer api.Close()
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vserver := grpc.NewServer()
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vapi := &stubVPNAPI{peers: tc.updatedPeers, getUpdateErr: tc.getUpdateErr}
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vpnproto.RegisterAPIServer(vserver, vapi)
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go vserver.Serve(netDialer.GetListener(net.JoinHostPort("10.118.0.1", vpnAPIPort)))
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defer vserver.GracefulStop()
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tlsConfig, err := atls.CreateAttestationServerTLSConfig(&core.MockIssuer{})
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require.NoError(err)
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pubserver := grpc.NewServer(grpc.Creds(credentials.NewTLS(tlsConfig)))
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pubproto.RegisterAPIServer(pubserver, api)
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go pubserver.Serve(netDialer.GetListener(net.JoinHostPort(nodeIP, endpointAVPNPort)))
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defer pubserver.GracefulStop()
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_, nodeVPNPubKey, err := activateNode(require, netDialer, messageSequence, nodeIP, "9000", nodeVPNIP, peer.ToPubProto(tc.initialPeers), ownerID, clusterID, stateDiskKey, ssh.ToProtoSlice(tc.sshKeys))
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assert.Equal(tc.wantState, cor.state)
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if tc.wantErr {
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assert.Error(err)
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return
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}
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require.NoError(err)
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assert.Equal(vpnPubKey, nodeVPNPubKey)
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assert.Equal(nodeVPNIP, cor.vpnIP)
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assert.Equal(ownerID, cor.ownerID)
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assert.Equal(clusterID, cor.clusterID)
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api.Close() // blocks until update loop finished
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if tc.getUpdateErr == nil {
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require.Len(cor.updatedPeers, 2)
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assert.Equal(tc.updatedPeers, cor.updatedPeers[1])
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} else {
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require.Len(cor.updatedPeers, 1)
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}
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assert.Equal(tc.initialPeers, cor.updatedPeers[0])
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assert.Equal([]role.Role{role.Node}, cor.persistNodeStateRoles)
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// Test SSH user & key creation. Both cases: "supposed to add" and "not supposed to add"
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// This slightly differs from a real environment (e.g. missing /home) but should be fine in the stub context with a virtual file system
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if tc.sshKeys != nil {
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passwd := user.Passwd{}
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entries, err := passwd.Parse(fs)
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require.NoError(err)
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for _, singleEntry := range entries {
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username := singleEntry.Gecos
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_, err := fs.Stat(fmt.Sprintf("/home/%s/.ssh/authorized_keys.d/ssh-keys", username))
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assert.NoError(err)
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}
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} else {
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passwd := user.Passwd{}
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_, err := passwd.Parse(fs)
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assert.EqualError(err, "open /etc/passwd: file does not exist")
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_, err = fs.Stat("/home")
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assert.EqualError(err, "open /home: file does not exist")
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}
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})
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}
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}
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func TestTriggerNodeUpdate(t *testing.T) {
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someErr := errors.New("failed")
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peers := []peer.Peer{
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{PublicIP: "192.0.2.11:2000", VPNIP: "192.0.2.21", VPNPubKey: []byte{1, 2, 3}},
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{PublicIP: "192.0.2.12:2000", VPNIP: "192.0.2.22", VPNPubKey: []byte{2, 3, 4}},
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}
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testCases := map[string]struct {
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peers []peer.Peer
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state state.State
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getUpdateErr error
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wantErr bool
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}{
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"basic": {
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peers: peers,
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state: state.IsNode,
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},
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"not activated": {
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peers: peers,
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state: state.AcceptingInit,
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wantErr: true,
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},
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"wrong peer kind": {
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peers: peers,
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state: state.ActivatingNodes,
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wantErr: true,
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},
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"GetUpdate error": {
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peers: peers,
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state: state.IsNode,
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getUpdateErr: someErr,
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wantErr: true,
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},
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}
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for name, tc := range testCases {
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t.Run(name, func(t *testing.T) {
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assert := assert.New(t)
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require := require.New(t)
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logger := zaptest.NewLogger(t)
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core := &fakeCore{state: tc.state}
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netDialer := testdialer.NewBufconnDialer()
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dialer := grpcutil.NewDialer(fakeValidator{}, netDialer)
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api := New(logger, core, dialer, nil, nil, nil)
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vserver := grpc.NewServer()
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vapi := &stubVPNAPI{
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peers: tc.peers,
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getUpdateErr: tc.getUpdateErr,
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}
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vpnproto.RegisterAPIServer(vserver, vapi)
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go vserver.Serve(netDialer.GetListener(net.JoinHostPort("10.118.0.1", vpnAPIPort)))
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defer vserver.GracefulStop()
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_, err := api.TriggerNodeUpdate(context.Background(), &pubproto.TriggerNodeUpdateRequest{})
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if tc.wantErr {
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assert.Error(err)
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return
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}
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require.NoError(err)
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// second update should be a noop
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_, err = api.TriggerNodeUpdate(context.Background(), &pubproto.TriggerNodeUpdateRequest{})
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require.NoError(err)
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require.Len(core.updatedPeers, 1)
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assert.Equal(tc.peers, core.updatedPeers[0])
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})
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}
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}
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func TestJoinCluster(t *testing.T) {
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someErr := errors.New("failed")
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testCases := map[string]struct {
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state state.State
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getJoinArgsErr error
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joinClusterErr error
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wantErr bool
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wantState state.State
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}{
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"basic": {
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state: state.NodeWaitingForClusterJoin,
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wantState: state.IsNode,
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},
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"not activated": {
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state: state.AcceptingInit,
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wantErr: true,
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wantState: state.AcceptingInit,
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},
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"wrong peer kind": {
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state: state.ActivatingNodes,
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wantErr: true,
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wantState: state.ActivatingNodes,
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},
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"GetK8sJoinArgs error": {
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state: state.NodeWaitingForClusterJoin,
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getJoinArgsErr: someErr,
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wantErr: true,
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wantState: state.NodeWaitingForClusterJoin,
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},
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"JoinCluster error": {
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state: state.NodeWaitingForClusterJoin,
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joinClusterErr: someErr,
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wantErr: true,
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wantState: state.Failed,
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},
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}
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for name, tc := range testCases {
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t.Run(name, func(t *testing.T) {
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assert := assert.New(t)
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require := require.New(t)
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logger := zaptest.NewLogger(t)
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core := &fakeCore{state: tc.state, joinClusterErr: tc.joinClusterErr}
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netDialer := testdialer.NewBufconnDialer()
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dialer := grpcutil.NewDialer(fakeValidator{}, netDialer)
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api := New(logger, core, dialer, nil, nil, nil)
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vserver := grpc.NewServer()
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vapi := &stubVPNAPI{
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joinArgs: kubeadm.BootstrapTokenDiscovery{
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APIServerEndpoint: "endp",
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Token: "token",
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CACertHashes: []string{"dis"},
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},
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getJoinArgsErr: tc.getJoinArgsErr,
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}
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vpnproto.RegisterAPIServer(vserver, vapi)
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go vserver.Serve(netDialer.GetListener(net.JoinHostPort("192.0.2.1", vpnAPIPort)))
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defer vserver.GracefulStop()
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_, err := api.JoinCluster(context.Background(), &pubproto.JoinClusterRequest{CoordinatorVpnIp: "192.0.2.1"})
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assert.Equal(tc.wantState, core.state)
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if tc.wantErr {
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assert.Error(err)
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return
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}
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require.NoError(err)
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assert.Equal([]kubeadm.BootstrapTokenDiscovery{vapi.joinArgs}, core.joinArgs)
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})
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}
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}
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func activateNode(require *require.Assertions, dialer netDialer, messageSequence []string, nodeIP, bindPort, nodeVPNIP string, peers []*pubproto.Peer, ownerID, clusterID, stateDiskKey []byte, sshUserKeys []*pubproto.SSHUserKey) (string, []byte, error) {
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ctx := context.Background()
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conn, err := dialGRPC(ctx, dialer, net.JoinHostPort(nodeIP, bindPort))
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require.NoError(err)
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defer conn.Close()
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client := pubproto.NewAPIClient(conn)
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stream, err := client.ActivateAsNode(ctx)
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if err != nil {
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return "", nil, err
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}
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for _, message := range messageSequence {
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switch message {
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case "initialRequest":
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err = stream.Send(&pubproto.ActivateAsNodeRequest{
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Request: &pubproto.ActivateAsNodeRequest_InitialRequest{
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InitialRequest: &pubproto.ActivateAsNodeInitialRequest{
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NodeVpnIp: nodeVPNIP,
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Peers: peers,
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OwnerId: ownerID,
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ClusterId: clusterID,
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SshUserKeys: sshUserKeys,
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},
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},
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})
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if err != nil {
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return "", nil, err
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}
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case "stateDiskKey":
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err = stream.Send(&pubproto.ActivateAsNodeRequest{
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Request: &pubproto.ActivateAsNodeRequest_StateDiskKey{
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StateDiskKey: stateDiskKey,
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},
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})
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if err != nil {
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return "", nil, err
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}
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default:
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panic("unknown message in activation")
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}
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}
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require.NoError(stream.CloseSend())
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diskUUIDReq, err := stream.Recv()
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if err != nil {
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return "", nil, err
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}
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diskUUID := diskUUIDReq.GetStateDiskUuid()
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vpnPubKeyReq, err := stream.Recv()
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if err != nil {
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return "", nil, err
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}
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nodeVPNPubKey := vpnPubKeyReq.GetNodeVpnPubKey()
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_, err = stream.Recv()
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if err != io.EOF {
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return "", nil, err
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}
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return diskUUID, nodeVPNPubKey, nil
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}
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func dialGRPC(ctx context.Context, dialer netDialer, target string) (*grpc.ClientConn, error) {
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tlsConfig, err := atls.CreateAttestationClientTLSConfig([]atls.Validator{&core.MockValidator{}})
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if err != nil {
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return nil, err
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}
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return grpc.DialContext(ctx, target,
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grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
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return dialer.DialContext(ctx, "tcp", addr)
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}),
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grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)),
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)
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}
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type stubVPNAPI struct {
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peers []peer.Peer
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joinArgs kubeadm.BootstrapTokenDiscovery
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getUpdateErr error
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getJoinArgsErr error
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getK8SCertKeyErr error
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vpnproto.UnimplementedAPIServer
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}
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func (a *stubVPNAPI) GetUpdate(ctx context.Context, in *vpnproto.GetUpdateRequest) (*vpnproto.GetUpdateResponse, error) {
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return &vpnproto.GetUpdateResponse{ResourceVersion: 1, Peers: peer.ToVPNProto(a.peers)}, a.getUpdateErr
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}
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func (a *stubVPNAPI) GetK8SJoinArgs(ctx context.Context, in *vpnproto.GetK8SJoinArgsRequest) (*vpnproto.GetK8SJoinArgsResponse, error) {
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return &vpnproto.GetK8SJoinArgsResponse{
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ApiServerEndpoint: a.joinArgs.APIServerEndpoint,
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Token: a.joinArgs.Token,
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DiscoveryTokenCaCertHash: a.joinArgs.CACertHashes[0],
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}, a.getJoinArgsErr
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}
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func (a *stubVPNAPI) GetK8SCertificateKey(ctx context.Context, in *vpnproto.GetK8SCertificateKeyRequest) (*vpnproto.GetK8SCertificateKeyResponse, error) {
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return &vpnproto.GetK8SCertificateKeyResponse{CertificateKey: "dummyCertKey"}, a.getK8SCertKeyErr
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}
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func (a *stubVPNAPI) newServer() *grpc.Server {
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server := grpc.NewServer()
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vpnproto.RegisterAPIServer(server, a)
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return server
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}
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type netDialer interface {
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DialContext(ctx context.Context, network, address string) (net.Conn, error)
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}
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