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98 lines
2.8 KiB
98 lines
2.8 KiB
// Copyright 2023 The frp Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sub
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import (
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"fmt"
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"os"
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"github.com/spf13/cobra"
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"github.com/fatedier/frp/pkg/config"
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v1 "github.com/fatedier/frp/pkg/config/v1"
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"github.com/fatedier/frp/pkg/nathole"
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)
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var (
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natHoleSTUNServer string
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natHoleLocalAddr string
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)
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func init() {
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rootCmd.AddCommand(natholeCmd)
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natholeCmd.AddCommand(natholeDiscoveryCmd)
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natholeCmd.PersistentFlags().StringVarP(&natHoleSTUNServer, "nat_hole_stun_server", "", "", "STUN server address for nathole")
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natholeCmd.PersistentFlags().StringVarP(&natHoleLocalAddr, "nat_hole_local_addr", "l", "", "local address to connect STUN server")
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}
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var natholeCmd = &cobra.Command{
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Use: "nathole",
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Short: "Actions about nathole",
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}
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var natholeDiscoveryCmd = &cobra.Command{
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Use: "discover",
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Short: "Discover nathole information from stun server",
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RunE: func(cmd *cobra.Command, args []string) error {
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// ignore error here, because we can use command line pameters
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cfg, _, _, _, err := config.LoadClientConfig(cfgFile, strictConfigMode)
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if err != nil {
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cfg = &v1.ClientCommonConfig{}
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cfg.Complete()
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}
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if natHoleSTUNServer != "" {
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cfg.NatHoleSTUNServer = natHoleSTUNServer
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}
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if err := validateForNatHoleDiscovery(cfg); err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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addrs, localAddr, err := nathole.Discover([]string{cfg.NatHoleSTUNServer}, natHoleLocalAddr)
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if err != nil {
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fmt.Println("discover error:", err)
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os.Exit(1)
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}
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if len(addrs) < 2 {
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fmt.Printf("discover error: can not get enough addresses, need 2, got: %v\n", addrs)
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os.Exit(1)
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}
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localIPs, _ := nathole.ListLocalIPsForNatHole(10)
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natFeature, err := nathole.ClassifyNATFeature(addrs, localIPs)
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if err != nil {
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fmt.Println("classify nat feature error:", err)
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os.Exit(1)
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}
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fmt.Println("STUN server:", cfg.NatHoleSTUNServer)
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fmt.Println("Your NAT type is:", natFeature.NatType)
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fmt.Println("Behavior is:", natFeature.Behavior)
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fmt.Println("External address is:", addrs)
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fmt.Println("Local address is:", localAddr.String())
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fmt.Println("Public Network:", natFeature.PublicNetwork)
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return nil
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},
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}
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func validateForNatHoleDiscovery(cfg *v1.ClientCommonConfig) error {
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if cfg.NatHoleSTUNServer == "" {
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return fmt.Errorf("nat_hole_stun_server can not be empty")
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}
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return nil
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}
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