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hook_oidc.go
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/
hook_oidc.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2019 Tencent. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the “License”); you may not use
* this file except in compliance with the License. You may obtain a copy of the
* License at
*
* https://opensource.org/licenses/Apache-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an “AS IS” BASIS, WITHOUT
* WARRANTIES OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package identityprovider
import (
"context"
"crypto/tls"
"fmt"
"net/http"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
gooidc "github.com/coreos/go-oidc"
dexserver "github.com/dexidp/dex/server"
dexstorage "github.com/dexidp/dex/storage"
"gopkg.in/square/go-jose.v2"
"k8s.io/apimachinery/pkg/api/errors"
genericapiserver "k8s.io/apiserver/pkg/server"
authinternalclient "tkestack.io/tke/api/client/clientset/internalversion/typed/auth/internalversion"
"tkestack.io/tke/pkg/apiserver/authentication/authenticator/oidc"
"tkestack.io/tke/pkg/auth/authentication/authenticator"
"tkestack.io/tke/pkg/util/log"
)
type dexHookHandler struct {
handler *DexHander
dexConfig *dexserver.Config
dexStorage dexstorage.Storage
authClient authinternalclient.AuthInterface
publicAddress string
internalAddress string
tokenAuthn *authenticator.TokenAuthenticator
ctx context.Context
}
func NewDexHookHandler(ctx context.Context, authClient authinternalclient.AuthInterface, config *dexserver.Config, storage dexstorage.Storage, handler *DexHander,
publicAddress string, internalAddress string, tokenAuthn *authenticator.TokenAuthenticator) genericapiserver.PostStartHookProvider {
return &dexHookHandler{
handler: handler,
dexConfig: config,
dexStorage: storage,
authClient: authClient,
publicAddress: publicAddress,
internalAddress: internalAddress,
tokenAuthn: tokenAuthn,
ctx: ctx,
}
}
// PostStartHook provides a function that is called after the server has started.
func (d *dexHookHandler) PostStartHook() (string, genericapiserver.PostStartHookFunc, error) {
return "create-dex-server", func(ctx genericapiserver.PostStartHookContext) error {
log.Info("start create dex server")
// Ensure all identity providers defined exists in dex.
idpMap := GetAllIdentityProviderMap()
for tenantID, idp := range idpMap {
idp, err := idp.Store()
if err != nil {
log.Errorf("Get connector for tenant failed", log.String("tenantID", tenantID), log.Err(err))
continue
}
// if conn is nil, not create into dexStorage
if idp == nil {
continue
}
if _, err := d.authClient.IdentityProviders().Create(context.Background(), idp, metav1.CreateOptions{}); err != nil && !errors.IsAlreadyExists(err) {
log.Error("Create idp for tenant failed", log.String("tenantID", tenantID), log.Any("idp", *idp), log.Err(err))
}
}
// Ensure there is at least one connector available for dex
conns, err := d.dexStorage.ListConnectors()
if err != nil {
return err
}
if len(conns) == 0 {
return fmt.Errorf("create connectors failed")
}
server, err := dexserver.NewServer(d.ctx, *d.dexConfig)
if err != nil {
return err
}
d.handler.handler = server
return d.registerIDTokenVerifier()
}, nil
}
func (d *dexHookHandler) registerIDTokenVerifier() error {
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{
Transport: tr,
}
ctx := gooidc.ClientContext(d.ctx, client)
idTokenVerifier, err := oidc.NewIDTokenVerifier(ctx, d.internalAddress, d.publicAddress, &gooidc.Config{
SkipClientIDCheck: true,
SupportedSigningAlgs: []string{
string(jose.RS256),
},
})
if err != nil {
log.Error("Failed to create the oidc verifier", log.Err(err))
return err
}
d.tokenAuthn.IDTokenVerifier = idTokenVerifier
return nil
}