/
auth.go
77 lines (68 loc) · 2.1 KB
/
auth.go
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/*
* Copyright © 2021 peizhaoyou <peizhaoyou@4paradigm.com>
*
* 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
*
* http://www.apache.org/licenses/LICENSE-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 OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Package auth implements auth methods
package auth
import (
"context"
"flag"
oidc "github.com/coreos/go-oidc/v3/oidc"
"github.com/pkg/errors"
"os"
)
var (
keycloakURL = flag.String("keycloak-url", os.Getenv("PINEAPPLE_OIDC_KEYCLOAK_URL"),
"oidc keycloak url like https://keycloak.pineapple.com:32443/auth/realms/develop")
clientID = flag.String("oidc-client-id", os.Getenv("PINEAPPLE_OIDC_CLIENT_ID"),
"oidc client id")
verifier *oidc.IDTokenVerifier = nil
)
type IDTokenClaim struct {
Iss string
Sub string
PreferredUserName string `json:"preferred_username"`
Email string
}
func InitAuth() error {
if *keycloakURL == "" {
return errors.New("flag to variable keycloakURL is not set")
}
if *clientID == "" {
return errors.New("flag to variable clientID is not set")
}
provider, err := oidc.NewProvider(context.TODO(), *keycloakURL)
if err != nil {
return errors.Wrap(err, "failed to new provider")
}
oidcConfig := &oidc.Config{
ClientID: *clientID,
}
verifier = provider.Verifier(oidcConfig)
return nil
}
func Verify(key string) (*IDTokenClaim, error) {
if verifier == nil {
return nil, errors.New("verifier not initialized")
}
idToken, err := verifier.Verify(context.TODO(), key)
if err != nil {
return nil, errors.Wrap(err, "token verify failed")
}
var idTokenClaim IDTokenClaim
if err := idToken.Claims(&idTokenClaim); err != nil {
return nil, errors.Wrap(err, "IDToken claim cast failed")
}
return &idTokenClaim, nil
}