60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
/*
|
|
|
|
Copyright 2019 The KubeSphere Authors.
|
|
|
|
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 jwt
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"github.com/dgrijalva/jwt-go"
|
|
)
|
|
|
|
const secretEnv = "JWT_SECRET"
|
|
|
|
var Secret []byte
|
|
|
|
func init() {
|
|
if env := os.Getenv(secretEnv); env != "" {
|
|
Secret = []byte(env)
|
|
} else {
|
|
fmt.Printf("Environment variable %s not set\n", secretEnv)
|
|
}
|
|
}
|
|
func provideKey(token *jwt.Token) (interface{}, error) {
|
|
if _, ok := token.Method.(*jwt.SigningMethodHMAC); ok {
|
|
return Secret, nil
|
|
} else {
|
|
return nil, fmt.Errorf("expect token signed with HMAC but got %v", token.Header["alg"])
|
|
}
|
|
}
|
|
|
|
func ValidateToken(uToken string) (*jwt.Token, error) {
|
|
|
|
if len(uToken) == 0 {
|
|
return nil, fmt.Errorf("token length is zero")
|
|
}
|
|
|
|
token, err := jwt.Parse(uToken, provideKey)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return token, nil
|
|
}
|