frp/pkg/config/v1/validation/proxy.go

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// Copyright 2023 The frp 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 validation
import (
"errors"
"fmt"
"strings"
"github.com/samber/lo"
v1 "github.com/fatedier/frp/pkg/config/v1"
"github.com/fatedier/frp/pkg/consts"
)
func validateProxyBaseConfigForClient(c *v1.ProxyBaseConfig) error {
if c.Name == "" {
return errors.New("name should not be empty")
}
if !lo.Contains([]string{"", "v1", "v2"}, c.Transport.ProxyProtocolVersion) {
return fmt.Errorf("not support proxy protocol version: %s", c.Transport.ProxyProtocolVersion)
}
if !lo.Contains([]string{"client", "server"}, c.Transport.BandwidthLimitMode) {
return fmt.Errorf("bandwidth limit mode should be client or server")
}
if c.Plugin.Type == "" {
if err := ValidatePort(c.LocalPort); err != nil {
return fmt.Errorf("localPort: %v", err)
}
}
if !lo.Contains([]string{"", "tcp", "http"}, c.HealthCheck.Type) {
return fmt.Errorf("not support health check type: %s", c.HealthCheck.Type)
}
if c.HealthCheck.Type != "" {
if c.HealthCheck.Type == "http" &&
c.HealthCheck.Path == "" {
return fmt.Errorf("health check path should not be empty")
}
}
if c.Plugin.Type != "" {
if err := ValidateClientPluginOptions(c.Plugin.ClientPluginOptions); err != nil {
return fmt.Errorf("plugin %s: %v", c.Plugin.Type, err)
}
}
return nil
}
func validateProxyBaseConfigForServer(c *v1.ProxyBaseConfig, s *v1.ServerConfig) error {
return nil
}
func validateDomainConfigForClient(c *v1.DomainConfig) error {
if c.SubDomain == "" && len(c.CustomDomains) == 0 {
return errors.New("subdomain and custom domains should not be both empty")
}
return nil
}
func validateDomainConfigForServer(c *v1.DomainConfig, s *v1.ServerConfig) error {
for _, domain := range c.CustomDomains {
if s.SubDomainHost != "" && len(strings.Split(s.SubDomainHost, ".")) < len(strings.Split(domain, ".")) {
if strings.Contains(domain, s.SubDomainHost) {
return fmt.Errorf("custom domain [%s] should not belong to subdomain host [%s]", domain, s.SubDomainHost)
}
}
}
if c.SubDomain != "" {
if s.SubDomainHost == "" {
return errors.New("subdomain is not supported because this feature is not enabled in server")
}
if strings.Contains(c.SubDomain, ".") || strings.Contains(c.SubDomain, "*") {
return errors.New("'.' and '*' are not supported in subdomain")
}
}
return nil
}
func ValidateProxyConfigurerForClient(c v1.ProxyConfigurer) error {
base := c.GetBaseConfig()
if err := validateProxyBaseConfigForClient(base); err != nil {
return err
}
switch v := c.(type) {
case *v1.TCPProxyConfig:
return validateTCPProxyConfigForClient(v)
case *v1.UDPProxyConfig:
return validateUDPProxyConfigForClient(v)
case *v1.TCPMuxProxyConfig:
return validateTCPMuxProxyConfigForClient(v)
case *v1.HTTPProxyConfig:
return validateHTTPProxyConfigForClient(v)
case *v1.HTTPSProxyConfig:
return validateHTTPSProxyConfigForClient(v)
case *v1.STCPProxyConfig:
return validateSTCPProxyConfigForClient(v)
case *v1.XTCPProxyConfig:
return validateXTCPProxyConfigForClient(v)
case *v1.SUDPProxyConfig:
return validateSUDPProxyConfigForClient(v)
}
return errors.New("unknown proxy config type")
}
func validateTCPProxyConfigForClient(c *v1.TCPProxyConfig) error {
return nil
}
func validateUDPProxyConfigForClient(c *v1.UDPProxyConfig) error {
return nil
}
func validateTCPMuxProxyConfigForClient(c *v1.TCPMuxProxyConfig) error {
if err := validateDomainConfigForClient(&c.DomainConfig); err != nil {
return err
}
if !lo.Contains([]string{consts.HTTPConnectTCPMultiplexer}, c.Multiplexer) {
return fmt.Errorf("not support multiplexer: %s", c.Multiplexer)
}
return nil
}
func validateHTTPProxyConfigForClient(c *v1.HTTPProxyConfig) error {
return validateDomainConfigForClient(&c.DomainConfig)
}
func validateHTTPSProxyConfigForClient(c *v1.HTTPSProxyConfig) error {
return validateDomainConfigForClient(&c.DomainConfig)
}
func validateSTCPProxyConfigForClient(c *v1.STCPProxyConfig) error {
return nil
}
func validateXTCPProxyConfigForClient(c *v1.XTCPProxyConfig) error {
return nil
}
func validateSUDPProxyConfigForClient(c *v1.SUDPProxyConfig) error {
return nil
}
func ValidateProxyConfigurerForServer(c v1.ProxyConfigurer, s *v1.ServerConfig) error {
base := c.GetBaseConfig()
if err := validateProxyBaseConfigForServer(base, s); err != nil {
return err
}
switch v := c.(type) {
case *v1.TCPProxyConfig:
return validateTCPProxyConfigForServer(v, s)
case *v1.UDPProxyConfig:
return validateUDPProxyConfigForServer(v, s)
case *v1.TCPMuxProxyConfig:
return validateTCPMuxProxyConfigForServer(v, s)
case *v1.HTTPProxyConfig:
return validateHTTPProxyConfigForServer(v, s)
case *v1.HTTPSProxyConfig:
return validateHTTPSProxyConfigForServer(v, s)
case *v1.STCPProxyConfig:
return validateSTCPProxyConfigForServer(v, s)
case *v1.XTCPProxyConfig:
return validateXTCPProxyConfigForServer(v, s)
case *v1.SUDPProxyConfig:
return validateSUDPProxyConfigForServer(v, s)
default:
return errors.New("unknown proxy config type")
}
}
func validateTCPProxyConfigForServer(c *v1.TCPProxyConfig, s *v1.ServerConfig) error {
return nil
}
func validateUDPProxyConfigForServer(c *v1.UDPProxyConfig, s *v1.ServerConfig) error {
return nil
}
func validateTCPMuxProxyConfigForServer(c *v1.TCPMuxProxyConfig, s *v1.ServerConfig) error {
if c.Multiplexer == consts.HTTPConnectTCPMultiplexer &&
s.TCPMuxHTTPConnectPort == 0 {
return fmt.Errorf("tcpmux with multiplexer httpconnect not supported because this feature is not enabled in server")
}
return validateDomainConfigForServer(&c.DomainConfig, s)
}
func validateHTTPProxyConfigForServer(c *v1.HTTPProxyConfig, s *v1.ServerConfig) error {
if s.VhostHTTPPort == 0 {
return fmt.Errorf("type [http] not supported when vhost http port is not set")
}
return validateDomainConfigForServer(&c.DomainConfig, s)
}
func validateHTTPSProxyConfigForServer(c *v1.HTTPSProxyConfig, s *v1.ServerConfig) error {
if s.VhostHTTPSPort == 0 {
return fmt.Errorf("type [https] not supported when vhost https port is not set")
}
return validateDomainConfigForServer(&c.DomainConfig, s)
}
func validateSTCPProxyConfigForServer(c *v1.STCPProxyConfig, s *v1.ServerConfig) error {
return nil
}
func validateXTCPProxyConfigForServer(c *v1.XTCPProxyConfig, s *v1.ServerConfig) error {
return nil
}
func validateSUDPProxyConfigForServer(c *v1.SUDPProxyConfig, s *v1.ServerConfig) error {
return nil
}