83 lines
2.7 KiB
Go
83 lines
2.7 KiB
Go
/*
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Copyright 2020 VMware, Inc.
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SPDX-License-Identifier: Apache-2.0
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*/
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package client
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import (
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"context"
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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clientauthenticationv1beta1 "k8s.io/client-go/pkg/apis/clientauthentication/v1beta1"
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"k8s.io/client-go/tools/clientcmd"
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clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
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placeholderv1alpha1 "github.com/suzerain-io/placeholder-name-api/pkg/apis/placeholder/v1alpha1"
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placeholderclientset "github.com/suzerain-io/placeholder-name-client-go/pkg/generated/clientset/versioned"
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"github.com/suzerain-io/placeholder-name/internal/constable"
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)
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// ErrLoginFailed is returned by ExchangeToken when the server rejects the login request.
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const ErrLoginFailed = constable.Error("login failed")
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func ExchangeToken(ctx context.Context, token, caBundle, apiEndpoint string) (*clientauthenticationv1beta1.ExecCredential, error) {
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clientset, err := getClient(apiEndpoint, caBundle)
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if err != nil {
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return nil, fmt.Errorf("could not get API client: %w", err)
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}
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resp, err := clientset.PlaceholderV1alpha1().LoginRequests().Create(ctx, &placeholderv1alpha1.LoginRequest{
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Spec: placeholderv1alpha1.LoginRequestSpec{
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Type: placeholderv1alpha1.TokenLoginCredentialType,
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Token: &placeholderv1alpha1.LoginRequestTokenCredential{
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Value: token,
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},
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},
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}, metav1.CreateOptions{})
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if err != nil {
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return nil, fmt.Errorf("could not login: %w", err)
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}
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if resp.Status.Credential == nil || resp.Status.Message != "" {
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return nil, fmt.Errorf("%w: %s", ErrLoginFailed, resp.Status.Message)
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}
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return &clientauthenticationv1beta1.ExecCredential{
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TypeMeta: metav1.TypeMeta{
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Kind: "ExecCredential",
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APIVersion: "client.authentication.k8s.io/v1beta1",
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},
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Status: &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: resp.Status.Credential.ExpirationTimestamp,
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ClientCertificateData: resp.Status.Credential.ClientCertificateData,
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ClientKeyData: resp.Status.Credential.ClientKeyData,
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},
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}, nil
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}
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// getClient returns an anonymous clientset for the placeholder-name API at the provided endpoint/CA bundle.
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func getClient(apiEndpoint string, caBundle string) (placeholderclientset.Interface, error) {
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cfg, err := clientcmd.NewNonInteractiveClientConfig(clientcmdapi.Config{
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Clusters: map[string]*clientcmdapi.Cluster{
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"cluster": {
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Server: apiEndpoint,
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CertificateAuthorityData: []byte(caBundle),
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},
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},
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Contexts: map[string]*clientcmdapi.Context{
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"current": {
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Cluster: "cluster",
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AuthInfo: "client",
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},
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},
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AuthInfos: map[string]*clientcmdapi.AuthInfo{
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"client": {},
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},
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}, "current", nil, nil).ClientConfig()
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if err != nil {
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return nil, err
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}
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return placeholderclientset.NewForConfig(cfg)
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}
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