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97 lines
2.8 KiB
97 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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