frp/models/auth/token.go

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// Copyright 2020 guylewin, guy@lewin.co.il
//
// 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
import (
"fmt"
"time"
"github.com/fatedier/frp/models/msg"
"github.com/fatedier/frp/utils/util"
"github.com/vaughan0/go-ini"
)
type tokenConfig struct {
// Token specifies the authorization token used to create keys to be sent
// to the server. The server must have a matching token for authorization
// to succeed. By default, this value is "".
Token string `json:"token"`
}
func getDefaultTokenConf() tokenConfig {
return tokenConfig{
Token: "",
}
}
func unmarshalTokenConfFromIni(conf ini.File) tokenConfig {
var (
tmpStr string
ok bool
)
cfg := getDefaultTokenConf()
if tmpStr, ok = conf.Get("common", "token"); ok {
cfg.Token = tmpStr
}
return cfg
}
type TokenAuthSetterVerifier struct {
baseConfig
token string
}
func NewTokenAuth(baseCfg baseConfig, cfg tokenConfig) *TokenAuthSetterVerifier {
return &TokenAuthSetterVerifier{
baseConfig: baseCfg,
token: cfg.Token,
}
}
func (auth *TokenAuthSetterVerifier) SetLogin(loginMsg *msg.Login) (err error) {
loginMsg.PrivilegeKey = util.GetAuthKey(auth.token, loginMsg.Timestamp)
return nil
}
func (auth *TokenAuthSetterVerifier) SetPing(pingMsg *msg.Ping) error {
if !auth.AuthenticateHeartBeats {
return nil
}
pingMsg.Timestamp = time.Now().Unix()
pingMsg.PrivilegeKey = util.GetAuthKey(auth.token, pingMsg.Timestamp)
return nil
}
func (auth *TokenAuthSetterVerifier) SetNewWorkConn(newWorkConnMsg *msg.NewWorkConn) error {
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if !auth.AuthenticateNewWorkConns {
return nil
}
newWorkConnMsg.Timestamp = time.Now().Unix()
newWorkConnMsg.PrivilegeKey = util.GetAuthKey(auth.token, newWorkConnMsg.Timestamp)
return nil
}
func (auth *TokenAuthSetterVerifier) VerifyLogin(loginMsg *msg.Login) error {
if util.GetAuthKey(auth.token, loginMsg.Timestamp) != loginMsg.PrivilegeKey {
return fmt.Errorf("token in login doesn't match token from configuration")
}
return nil
}
func (auth *TokenAuthSetterVerifier) VerifyPing(pingMsg *msg.Ping) error {
if !auth.AuthenticateHeartBeats {
return nil
}
if util.GetAuthKey(auth.token, pingMsg.Timestamp) != pingMsg.PrivilegeKey {
return fmt.Errorf("token in heartbeat doesn't match token from configuration")
}
return nil
}
func (auth *TokenAuthSetterVerifier) VerifyNewWorkConn(newWorkConnMsg *msg.NewWorkConn) error {
if !auth.AuthenticateNewWorkConns {
return nil
}
if util.GetAuthKey(auth.token, newWorkConnMsg.Timestamp) != newWorkConnMsg.PrivilegeKey {
return fmt.Errorf("token in NewWorkConn doesn't match token from configuration")
}
return nil
}