Remove "--concierge-mode" flag from "pinniped login [...]" commands.

Signed-off-by: Matt Moyer <moyerm@vmware.com>

cmd/pinniped/cmd/login_oidc.go

@@ -14,14 +14,8 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
-	"strings"
 	"time"
 
-	corev1 "k8s.io/api/core/v1"
-
-	authenticationv1alpha1 "go.pinniped.dev/generated/latest/apis/concierge/authentication/v1alpha1"
-	loginv1alpha1 "go.pinniped.dev/generated/latest/apis/concierge/login/v1alpha1"
-
 	"github.com/coreos/go-oidc/v3/oidc"
 	"github.com/spf13/cobra"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -71,7 +65,6 @@ type oidcLoginFlags struct {
 	conciergeEndpoint          string
 	conciergeCABundle          string
 	conciergeAPIGroupSuffix    string
-	conciergeMode              conciergeModeFlag
 }
 
 func oidcLoginCommand(deps oidcLoginCommandDeps) *cobra.Command {
@@ -102,7 +95,6 @@ func oidcLoginCommand(deps oidcLoginCommandDeps) *cobra.Command {
 	cmd.Flags().StringVar(&flags.conciergeEndpoint, "concierge-endpoint", "", "API base for the Concierge endpoint")
 	cmd.Flags().StringVar(&flags.conciergeCABundle, "concierge-ca-bundle-data", "", "CA bundle to use when connecting to the Concierge")
 	cmd.Flags().StringVar(&flags.conciergeAPIGroupSuffix, "concierge-api-group-suffix", groupsuffix.PinnipedDefaultSuffix, "Concierge API group suffix")
-	cmd.Flags().Var(&flags.conciergeMode, "concierge-mode", "Concierge mode of operation")
 
 	mustMarkHidden(cmd, "debug-session-cache")
 	mustMarkRequired(cmd, "issuer")
@@ -179,37 +171,17 @@ func runOIDCLogin(cmd *cobra.Command, deps oidcLoginCommandDeps, flags oidcLogin
 	}
 	cred := tokenCredential(token)
 
-	// If there is no concierge configuration, return the credential directly.
+	// If the concierge was configured, exchange the credential for a separate short-lived, cluster-specific credential.
-	if concierge == nil {
+	if concierge != nil {
-		return json.NewEncoder(cmd.OutOrStdout()).Encode(cred)
+		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-	}
+		defer cancel()
 
-	// If the concierge was configured, we need to do extra steps to make the credential usable.
+		cred, err = deps.exchangeToken(ctx, concierge, token.IDToken.Token)
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-	defer cancel()
-
-	// The exact behavior depends on in which mode the Concierge is operating.
-	switch flags.conciergeMode {
-	case modeUnknown, modeTokenCredentialRequestAPI:
-		// do a credential exchange request
-		cred, err := deps.exchangeToken(ctx, concierge, token.IDToken.Token)
 		if err != nil {
 			return fmt.Errorf("could not complete concierge credential exchange: %w", err)
 		}
-		return json.NewEncoder(cmd.OutOrStdout()).Encode(cred)
-
-	case modeImpersonationProxy:
-		// Put the token into a TokenCredentialRequest
-		// put the TokenCredentialRequest in an ExecCredential
-		req, err := execCredentialForImpersonationProxy(token.IDToken.Token, flags.conciergeAuthenticatorType, flags.conciergeAuthenticatorName, &token.IDToken.Expiry)
-		if err != nil {
-			return err
-		}
-		return json.NewEncoder(cmd.OutOrStdout()).Encode(req)
-
-	default:
-		return fmt.Errorf("unsupported Concierge mode %q", flags.conciergeMode.String())
 	}
+	return json.NewEncoder(cmd.OutOrStdout()).Encode(cred)
 }
 
 func makeClient(caBundlePaths []string, caBundleData []string) (*http.Client, error) {
@@ -271,53 +243,3 @@ func mustGetConfigDir() string {
 	}
 	return filepath.Join(home, ".config", xdgAppName)
 }
-
-func execCredentialForImpersonationProxy(
-	idToken string,
-	conciergeAuthenticatorType string,
-	conciergeAuthenticatorName string,
-	tokenExpiry *metav1.Time,
-) (*clientauthv1beta1.ExecCredential, error) {
-	// TODO maybe de-dup this with conciergeclient.go
-	// TODO reuse code from internal/testutil/impersonationtoken here to create token
-	var kind string
-	switch strings.ToLower(conciergeAuthenticatorType) {
-	case "webhook":
-		kind = "WebhookAuthenticator"
-	case "jwt":
-		kind = "JWTAuthenticator"
-	default:
-		return nil, fmt.Errorf(`invalid authenticator type: %q, supported values are "webhook" and "jwt"`, kind)
-	}
-	reqJSON, err := json.Marshal(&loginv1alpha1.TokenCredentialRequest{
-		TypeMeta: metav1.TypeMeta{
-			Kind:       "TokenCredentialRequest",
-			APIVersion: loginv1alpha1.GroupName + "/v1alpha1",
-		},
-		Spec: loginv1alpha1.TokenCredentialRequestSpec{
-			Token: idToken, // TODO
-			Authenticator: corev1.TypedLocalObjectReference{
-				APIGroup: &authenticationv1alpha1.SchemeGroupVersion.Group,
-				Kind:     kind,
-				Name:     conciergeAuthenticatorName,
-			},
-		},
-	})
-	if err != nil {
-		return nil, fmt.Errorf("Error creating TokenCredentialRequest for impersonation proxy: %w", err)
-	}
-	encodedToken := base64.StdEncoding.EncodeToString(reqJSON)
-	cred := &clientauthv1beta1.ExecCredential{
-		TypeMeta: metav1.TypeMeta{
-			Kind:       "ExecCredential",
-			APIVersion: "client.authentication.k8s.io/v1beta1",
-		},
-		Status: &clientauthv1beta1.ExecCredentialStatus{
-			Token: encodedToken,
-		},
-	}
-	if !tokenExpiry.IsZero() {
-		cred.Status.ExpirationTimestamp = tokenExpiry
-	}
-	return cred, nil
-}

cmd/pinniped/cmd/login_oidc_test.go

@@ -8,7 +8,6 @@ import (
 	"context"
 	"crypto/x509/pkix"
 	"encoding/base64"
-	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"path/filepath"
@@ -16,12 +15,9 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/require"
-	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	clientauthv1beta1 "k8s.io/client-go/pkg/apis/clientauthentication/v1beta1"
 
-	authenticationv1alpha1 "go.pinniped.dev/generated/latest/apis/concierge/authentication/v1alpha1"
-	loginv1alpha1 "go.pinniped.dev/generated/latest/apis/concierge/login/v1alpha1"
 	"go.pinniped.dev/internal/certauthority"
 	"go.pinniped.dev/internal/here"
 	"go.pinniped.dev/internal/testutil"
@@ -69,7 +65,6 @@ func TestLoginOIDCCommand(t *testing.T) {
 				      --concierge-authenticator-type string   Concierge authenticator type (e.g., 'webhook', 'jwt')
 				      --concierge-ca-bundle-data string       CA bundle to use when connecting to the Concierge
 				      --concierge-endpoint string             API base for the Concierge endpoint
-				      --concierge-mode mode                   Concierge mode of operation (default TokenCredentialRequestAPI)
 				      --enable-concierge                      Use the Concierge to login
 				  -h, --help                                  help for oidc
 				      --issuer string                         OpenID Connect issuer URL
@@ -199,21 +194,6 @@ func TestLoginOIDCCommand(t *testing.T) {
 			wantOptionsCount: 7,
 			wantStdout:       `{"kind":"ExecCredential","apiVersion":"client.authentication.k8s.io/v1beta1","spec":{},"status":{"token":"exchanged-token"}}` + "\n",
 		},
-		{
-			name: "success with impersonation proxy",
-			args: []string{
-				"--client-id", "test-client-id",
-				"--issuer", "test-issuer",
-				"--enable-concierge",
-				"--concierge-mode", "ImpersonationProxy",
-				"--concierge-authenticator-type", "webhook",
-				"--concierge-authenticator-name", "test-authenticator",
-				"--concierge-endpoint", "https://127.0.0.1:1234/",
-				"--concierge-ca-bundle-data", base64.StdEncoding.EncodeToString(testCA.Bundle()),
-			},
-			wantOptionsCount: 3,
-			wantStdout:       `{"kind":"ExecCredential","apiVersion":"client.authentication.k8s.io/v1beta1","spec":{},"status":{"expirationTimestamp":"3020-10-12T13:14:15Z","token":"` + impersonationProxyTestToken("test-id-token") + `"}}` + "\n",
-		},
 	}
 	for _, tt := range tests {
 		tt := tt
@@ -270,21 +250,3 @@ func TestLoginOIDCCommand(t *testing.T) {
 		})
 	}
 }
-
-func impersonationProxyTestToken(token string) string {
-	reqJSON, _ := json.Marshal(&loginv1alpha1.TokenCredentialRequest{
-		TypeMeta: metav1.TypeMeta{
-			Kind:       "TokenCredentialRequest",
-			APIVersion: loginv1alpha1.GroupName + "/v1alpha1",
-		},
-		Spec: loginv1alpha1.TokenCredentialRequestSpec{
-			Token: token,
-			Authenticator: corev1.TypedLocalObjectReference{
-				APIGroup: &authenticationv1alpha1.SchemeGroupVersion.Group,
-				Kind:     "WebhookAuthenticator",
-				Name:     "test-authenticator",
-			},
-		},
-	})
-	return base64.StdEncoding.EncodeToString(reqJSON)
-}

cmd/pinniped/cmd/login_static.go

@@ -47,7 +47,6 @@ type staticLoginParams struct {
 	conciergeEndpoint          string
 	conciergeCABundle          string
 	conciergeAPIGroupSuffix    string
-	conciergeMode              conciergeModeFlag
 }
 
 func staticLoginCommand(deps staticLoginDeps) *cobra.Command {
@@ -70,7 +69,6 @@ func staticLoginCommand(deps staticLoginDeps) *cobra.Command {
 	cmd.Flags().StringVar(&flags.conciergeEndpoint, "concierge-endpoint", "", "API base for the Concierge endpoint")
 	cmd.Flags().StringVar(&flags.conciergeCABundle, "concierge-ca-bundle-data", "", "CA bundle to use when connecting to the Concierge")
 	cmd.Flags().StringVar(&flags.conciergeAPIGroupSuffix, "concierge-api-group-suffix", groupsuffix.PinnipedDefaultSuffix, "Concierge API group suffix")
-	cmd.Flags().Var(&flags.conciergeMode, "concierge-mode", "Concierge mode of operation")
 
 	cmd.RunE = func(cmd *cobra.Command, args []string) error { return runStaticLogin(cmd.OutOrStdout(), deps, flags) }
 
@@ -115,34 +113,16 @@ func runStaticLogin(out io.Writer, deps staticLoginDeps, flags staticLoginParams
 	}
 	cred := tokenCredential(&oidctypes.Token{IDToken: &oidctypes.IDToken{Token: token}})
 
-	// If there is no concierge configuration, return the credential directly.
+	// If the concierge was configured, exchange the credential for a separate short-lived, cluster-specific credential.
-	if concierge == nil {
+	if concierge != nil {
-		return json.NewEncoder(out).Encode(cred)
-	}
-
-	// If the concierge is enabled, we need to do extra steps.
-	switch flags.conciergeMode {
-	case modeUnknown, modeTokenCredentialRequestAPI:
-		// do a credential exchange request
 		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
 		defer cancel()
 
-		cred, err := deps.exchangeToken(ctx, concierge, token)
+		var err error
+		cred, err = deps.exchangeToken(ctx, concierge, token)
 		if err != nil {
 			return fmt.Errorf("could not complete concierge credential exchange: %w", err)
 		}
-		return json.NewEncoder(out).Encode(cred)
-
-	case modeImpersonationProxy:
-		// Put the token into a TokenCredentialRequest
-		// put the TokenCredentialRequest in an ExecCredential
-		req, err := execCredentialForImpersonationProxy(token, flags.conciergeAuthenticatorType, flags.conciergeAuthenticatorName, nil)
-		if err != nil {
-			return err
-		}
-		return json.NewEncoder(out).Encode(req)
-
-	default:
-		return fmt.Errorf("unsupported Concierge mode %q", flags.conciergeMode.String())
 	}
+	return json.NewEncoder(out).Encode(cred)
 }

cmd/pinniped/cmd/login_static_test.go

@@ -56,7 +56,6 @@ func TestLoginStaticCommand(t *testing.T) {
 				      --concierge-authenticator-type string   Concierge authenticator type (e.g., 'webhook', 'jwt')
 				      --concierge-ca-bundle-data string       CA bundle to use when connecting to the Concierge
 				      --concierge-endpoint string             API base for the Concierge endpoint
-				      --concierge-mode mode                   Concierge mode of operation (default TokenCredentialRequestAPI)
 				      --enable-concierge                      Use the Concierge to login
 				  -h, --help                                  help for static
 				      --token string                          Static token to present during login
@@ -152,18 +151,6 @@ func TestLoginStaticCommand(t *testing.T) {
 			},
 			wantStdout: `{"kind":"ExecCredential","apiVersion":"client.authentication.k8s.io/v1beta1","spec":{},"status":{"token":"test-token"}}` + "\n",
 		},
-		{
-			name: "impersonation proxy success",
-			args: []string{
-				"--enable-concierge",
-				"--concierge-mode", "ImpersonationProxy",
-				"--token", "test-token",
-				"--concierge-endpoint", "https://127.0.0.1/",
-				"--concierge-authenticator-type", "webhook",
-				"--concierge-authenticator-name", "test-authenticator",
-			},
-			wantStdout: `{"kind":"ExecCredential","apiVersion":"client.authentication.k8s.io/v1beta1","spec":{},"status":{"token":"` + impersonationProxyTestToken("test-token") + `"}}` + "\n",
-		},
 	}
 	for _, tt := range tests {
 		tt := tt