You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
103 lines
2.3 KiB
103 lines
2.3 KiB
package main
|
|
|
|
import (
|
|
"crypto/rsa"
|
|
"crypto/x509"
|
|
"encoding/pem"
|
|
"io/ioutil"
|
|
"time"
|
|
|
|
jwt "github.com/dgrijalva/jwt-go"
|
|
"golang.org/x/crypto/bcrypt"
|
|
)
|
|
|
|
// JWTAuthBackend - jwt auth backend
|
|
type JWTAuthBackend struct {
|
|
privateKey *rsa.PrivateKey
|
|
PublicKey *rsa.PublicKey
|
|
}
|
|
|
|
const (
|
|
jwtExpirationDelta = 10
|
|
expireOffset = 3600
|
|
)
|
|
|
|
// InitJWT - init.
|
|
func InitJWT() *JWTAuthBackend {
|
|
authBackendInstance := &JWTAuthBackend{
|
|
privateKey: getPrivateKey(),
|
|
PublicKey: getPublicKey(),
|
|
}
|
|
return authBackendInstance
|
|
}
|
|
|
|
// GenerateToken -
|
|
func (b *JWTAuthBackend) GenerateToken(userName string) (string, error) {
|
|
token := jwt.New(jwt.SigningMethodRS512)
|
|
token.Claims["exp"] = time.Now().Add(time.Hour * time.Duration(jwtExpirationDelta)).Unix()
|
|
token.Claims["iat"] = time.Now().Unix()
|
|
token.Claims["sub"] = userName
|
|
tokenString, err := token.SignedString(b.privateKey)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return tokenString, nil
|
|
}
|
|
|
|
// Authenticate -
|
|
func (b *JWTAuthBackend) Authenticate(args *LoginArgs, accessKeyID, secretAccessKey string) bool {
|
|
hashedPassword, _ := bcrypt.GenerateFromPassword([]byte(secretAccessKey), 10)
|
|
if args.Username == accessKeyID {
|
|
return bcrypt.CompareHashAndPassword(hashedPassword, []byte(args.Password)) == nil
|
|
}
|
|
return false
|
|
}
|
|
|
|
//
|
|
func (b *JWTAuthBackend) getTokenRemainingValidity(timestamp interface{}) int {
|
|
if validity, ok := timestamp.(float64); ok {
|
|
tm := time.Unix(int64(validity), 0)
|
|
remainer := tm.Sub(time.Now())
|
|
if remainer > 0 {
|
|
return int(remainer.Seconds() + expireOffset)
|
|
}
|
|
}
|
|
return expireOffset
|
|
}
|
|
|
|
// Logout - logout is not implemented yet.
|
|
func (b *JWTAuthBackend) Logout(tokenString string) error {
|
|
return nil
|
|
}
|
|
|
|
func getPrivateKey() *rsa.PrivateKey {
|
|
pemBytes, err := ioutil.ReadFile(mustGetPrivateKeyPath())
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
data, _ := pem.Decode([]byte(pemBytes))
|
|
privateKeyImported, err := x509.ParsePKCS1PrivateKey(data.Bytes)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return privateKeyImported
|
|
}
|
|
|
|
func getPublicKey() *rsa.PublicKey {
|
|
pemBytes, err := ioutil.ReadFile(mustGetPublicKeyPath())
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
data, _ := pem.Decode([]byte(pemBytes))
|
|
publicKeyImported, err := x509.ParsePKIXPublicKey(data.Bytes)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
rsaPub, ok := publicKeyImported.(*rsa.PublicKey)
|
|
if !ok {
|
|
panic(err)
|
|
}
|
|
|
|
return rsaPub
|
|
}
|
|
|