66 lines
2.8 KiB
Go
66 lines
2.8 KiB
Go
// Copyright 2021 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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// Package impersonationtoken contains a test utility to generate a token to be used against our
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// impersonation proxy.
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//
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// It is its own package to fix import cycles involving concierge/scheme, testutil, and groupsuffix.
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package impersonationtoken
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import (
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"encoding/base64"
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"testing"
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"github.com/stretchr/testify/require"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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loginv1alpha1 "go.pinniped.dev/generated/latest/apis/concierge/login/v1alpha1"
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conciergescheme "go.pinniped.dev/internal/concierge/scheme"
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"go.pinniped.dev/internal/groupsuffix"
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)
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func Make(
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t *testing.T,
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token string,
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authenticator *corev1.TypedLocalObjectReference,
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apiGroupSuffix string,
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) string {
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t.Helper()
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// The impersonation test token should be a base64-encoded TokenCredentialRequest object. The API
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// group of the TokenCredentialRequest object, and its Spec.Authenticator, should match whatever
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// is installed on the cluster. This API group is usually replaced by the kubeclient middleware,
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// but this object is not touched by the middleware since it is in a HTTP header. Therefore, we
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// need to make a manual edit here.
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scheme, loginGV, _ := conciergescheme.New(apiGroupSuffix)
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tokenCredentialRequest := loginv1alpha1.TokenCredentialRequest{
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TypeMeta: metav1.TypeMeta{
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Kind: "TokenCredentialRequest",
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APIVersion: loginGV.Group + "/v1alpha1",
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},
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Spec: loginv1alpha1.TokenCredentialRequestSpec{
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Token: token,
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Authenticator: *authenticator.DeepCopy(),
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},
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}
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// It is assumed that the provided authenticator uses the default pinniped.dev API group, since
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// this is usually replaced by the kubeclient middleware. Since we are not going through the
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// kubeclient middleware, we need to make this replacement ourselves.
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require.NotNil(t, tokenCredentialRequest.Spec.Authenticator.APIGroup, "expected authenticator to have non-nil API group")
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authenticatorAPIGroup, ok := groupsuffix.Replace(*tokenCredentialRequest.Spec.Authenticator.APIGroup, apiGroupSuffix)
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require.True(t, ok, "couldn't replace suffix of %q with %q", *tokenCredentialRequest.Spec.Authenticator.APIGroup, apiGroupSuffix)
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tokenCredentialRequest.Spec.Authenticator.APIGroup = &authenticatorAPIGroup
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codecs := serializer.NewCodecFactory(scheme)
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respInfo, ok := runtime.SerializerInfoForMediaType(codecs.SupportedMediaTypes(), runtime.ContentTypeJSON)
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require.True(t, ok, "couldn't find serializer info for media type")
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reqJSON, err := runtime.Encode(respInfo.PrettySerializer, &tokenCredentialRequest)
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require.NoError(t, err)
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return base64.StdEncoding.EncodeToString(reqJSON)
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}
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