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authenticator.go
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/
authenticator.go
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// Copyright 2018 The Harbor Authors. All rights reserved.
package api
import (
"errors"
"fmt"
"net/http"
"strings"
"github.com/vmware/harbor/src/jobservice/config"
"github.com/vmware/harbor/src/jobservice/utils"
)
const (
secretPrefix = "Harbor-Secret"
authHeader = "Authorization"
)
//Authenticator defined behaviors of doing auth checking.
type Authenticator interface {
//Auth incoming request
//
//req *http.Request: the incoming request
//
//Returns:
// nil returned if successfully done
// otherwise an error returned
DoAuth(req *http.Request) error
}
//SecretAuthenticator implements interface 'Authenticator' based on simple secret.
type SecretAuthenticator struct{}
//DoAuth implements same method in interface 'Authenticator'.
func (sa *SecretAuthenticator) DoAuth(req *http.Request) error {
if req == nil {
return errors.New("nil request")
}
h := strings.TrimSpace(req.Header.Get(authHeader))
if utils.IsEmptyStr(h) {
return fmt.Errorf("header '%s' missing", authHeader)
}
if !strings.HasPrefix(h, secretPrefix) {
return fmt.Errorf("'%s' should start with '%s' but got '%s' now", authHeader, secretPrefix, h)
}
secret := strings.TrimSpace(strings.TrimPrefix(h, secretPrefix))
//incase both two are empty
if utils.IsEmptyStr(secret) {
return errors.New("empty secret is not allowed")
}
expectedSecret := config.GetUIAuthSecret()
if expectedSecret != secret {
return errors.New("unauthorized")
}
return nil
}