0b300cbe42
To make an impersonation request, first make a TokenCredentialRequest to get a certificate. That cert will either be issued by the Kube API server's CA or by a new CA specific to the impersonator. Either way, you can then make a request to the impersonator and present that client cert for auth and the impersonator will accept it and make the impesonation call on your behalf. The impersonator http handler now borrows some Kube library code to handle request processing. This will allow us to more closely mimic the behavior of a real API server, e.g. the client cert auth will work exactly like the real API server. Signed-off-by: Monis Khan <mok@vmware.com>
69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
// Copyright 2020-2021 the Pinniped contributors. All Rights Reserved.
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
package apicerts
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
k8serrors "k8s.io/apimachinery/pkg/api/errors"
|
|
corev1informers "k8s.io/client-go/informers/core/v1"
|
|
"k8s.io/klog/v2"
|
|
|
|
pinnipedcontroller "go.pinniped.dev/internal/controller"
|
|
"go.pinniped.dev/internal/controllerlib"
|
|
"go.pinniped.dev/internal/dynamiccert"
|
|
)
|
|
|
|
type certsObserverController struct {
|
|
namespace string
|
|
certsSecretResourceName string
|
|
dynamicCertProvider dynamiccert.Provider
|
|
secretInformer corev1informers.SecretInformer
|
|
}
|
|
|
|
func NewCertsObserverController(
|
|
namespace string,
|
|
certsSecretResourceName string,
|
|
dynamicCertProvider dynamiccert.Provider,
|
|
secretInformer corev1informers.SecretInformer,
|
|
withInformer pinnipedcontroller.WithInformerOptionFunc,
|
|
) controllerlib.Controller {
|
|
return controllerlib.New(
|
|
controllerlib.Config{
|
|
Name: "certs-observer-controller",
|
|
Syncer: &certsObserverController{
|
|
namespace: namespace,
|
|
certsSecretResourceName: certsSecretResourceName,
|
|
dynamicCertProvider: dynamicCertProvider,
|
|
secretInformer: secretInformer,
|
|
},
|
|
},
|
|
withInformer(
|
|
secretInformer,
|
|
pinnipedcontroller.NameAndNamespaceExactMatchFilterFactory(certsSecretResourceName, namespace),
|
|
controllerlib.InformerOption{},
|
|
),
|
|
)
|
|
}
|
|
|
|
func (c *certsObserverController) Sync(_ controllerlib.Context) error {
|
|
// Try to get the secret from the informer cache.
|
|
certSecret, err := c.secretInformer.Lister().Secrets(c.namespace).Get(c.certsSecretResourceName)
|
|
notFound := k8serrors.IsNotFound(err)
|
|
if err != nil && !notFound {
|
|
return fmt.Errorf("failed to get %s/%s secret: %w", c.namespace, c.certsSecretResourceName, err)
|
|
}
|
|
if notFound {
|
|
klog.Info("certsObserverController Sync found that the secret does not exist yet or was deleted")
|
|
// The secret does not exist yet or was deleted.
|
|
c.dynamicCertProvider.Set(nil, nil)
|
|
return nil
|
|
}
|
|
|
|
// Mutate the in-memory cert provider to update with the latest cert values.
|
|
c.dynamicCertProvider.Set(certSecret.Data[TLSCertificateChainSecretKey], certSecret.Data[tlsPrivateKeySecretKey])
|
|
klog.Info("certsObserverController Sync updated certs in the dynamic cert provider")
|
|
return nil
|
|
}
|