frpc: support nathole discover (#3381)

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fatedier 2023-03-30 20:28:15 +08:00 committed by GitHub
parent 9800b4cfcf
commit a22d6c9504
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GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 521 additions and 17 deletions

86
cmd/frpc/sub/nathole.go Normal file
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@ -0,0 +1,86 @@
// 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 sub
import (
"fmt"
"net"
"os"
"strconv"
"github.com/spf13/cobra"
"github.com/fatedier/frp/pkg/config"
"github.com/fatedier/frp/pkg/nathole"
)
func init() {
RegisterCommonFlags(natholeCmd)
rootCmd.AddCommand(natholeCmd)
natholeCmd.AddCommand(natholeDiscoveryCmd)
}
var natholeCmd = &cobra.Command{
Use: "nathole",
Short: "Actions about nathole",
}
var natholeDiscoveryCmd = &cobra.Command{
Use: "discover",
Short: "Discover nathole information by frps and stun server",
RunE: func(cmd *cobra.Command, args []string) error {
cfg, _, _, err := config.ParseClientConfig(cfgFile)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
if err := validateForNatHoleDiscovery(cfg); err != nil {
fmt.Println(err)
os.Exit(1)
}
addresses, err := nathole.Discover(
net.JoinHostPort(cfg.ServerAddr, strconv.Itoa(cfg.ServerUDPPort)),
[]string{cfg.NatHoleSTUNServer},
[]byte(cfg.Token),
)
if err != nil {
fmt.Println("discover error:", err)
os.Exit(1)
}
natType, behavior, err := nathole.ClassifyNATType(addresses)
if err != nil {
fmt.Println("classify nat type error:", err)
os.Exit(1)
}
fmt.Println("Your NAT type is:", natType)
fmt.Println("Behavior is:", behavior)
fmt.Println("External address is:", addresses)
return nil
},
}
func validateForNatHoleDiscovery(cfg config.ClientCommonConf) error {
if cfg.NatHoleSTUNServer == "" {
return fmt.Errorf("nat_hole_stun_server can not be empty")
}
if cfg.ServerUDPPort == 0 {
return fmt.Errorf("server udp port can not be empty")
}
return nil
}

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@ -10,6 +10,13 @@ server_port = 7000
# server_addr. # server_addr.
# nat_hole_server_addr = 0.0.0.0 # nat_hole_server_addr = 0.0.0.0
# ServerUDPPort specifies the server port to help penetrate NAT hole. By default, this value is 0.
# This parameter is only used when executing "nathole discover" in the command line.
# server_udp_port = 0
# STUN server to help penetrate NAT hole.
# nat_hole_stun_server = stun.easyvoip.com:3478
# The maximum amount of time a dial to server will wait for a connect to complete. Default value is 10 seconds. # The maximum amount of time a dial to server will wait for a connect to complete. Default value is 10 seconds.
# dial_server_timeout = 10 # dial_server_timeout = 10

6
go.mod
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@ -6,7 +6,7 @@ require (
github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5
github.com/coreos/go-oidc/v3 v3.4.0 github.com/coreos/go-oidc/v3 v3.4.0
github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb
github.com/fatedier/golib v0.1.1-0.20230311074156-2623b2569b10 github.com/fatedier/golib v0.1.1-0.20230320133937-a7edcc8c793d
github.com/fatedier/kcp-go v2.0.4-0.20190803094908-fe8645b0a904+incompatible github.com/fatedier/kcp-go v2.0.4-0.20190803094908-fe8645b0a904+incompatible
github.com/go-playground/validator/v10 v10.11.0 github.com/go-playground/validator/v10 v10.11.0
github.com/google/uuid v1.3.0 github.com/google/uuid v1.3.0
@ -15,12 +15,13 @@ require (
github.com/hashicorp/yamux v0.1.1 github.com/hashicorp/yamux v0.1.1
github.com/onsi/ginkgo/v2 v2.8.3 github.com/onsi/ginkgo/v2 v2.8.3
github.com/onsi/gomega v1.27.0 github.com/onsi/gomega v1.27.0
github.com/pion/stun v0.4.0
github.com/pires/go-proxyproto v0.6.2 github.com/pires/go-proxyproto v0.6.2
github.com/prometheus/client_golang v1.13.0 github.com/prometheus/client_golang v1.13.0
github.com/quic-go/quic-go v0.32.0 github.com/quic-go/quic-go v0.32.0
github.com/rodaine/table v1.0.1 github.com/rodaine/table v1.0.1
github.com/spf13/cobra v1.1.3 github.com/spf13/cobra v1.1.3
github.com/stretchr/testify v1.8.0 github.com/stretchr/testify v1.8.1
golang.org/x/net v0.7.0 golang.org/x/net v0.7.0
golang.org/x/oauth2 v0.3.0 golang.org/x/oauth2 v0.3.0
golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 golang.org/x/time v0.0.0-20220210224613-90d013bbcef8
@ -48,6 +49,7 @@ require (
github.com/klauspost/reedsolomon v1.9.15 // indirect github.com/klauspost/reedsolomon v1.9.15 // indirect
github.com/leodido/go-urn v1.2.1 // indirect github.com/leodido/go-urn v1.2.1 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
github.com/pion/transport/v2 v2.0.0 // indirect
github.com/pkg/errors v0.9.1 // indirect github.com/pkg/errors v0.9.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/prometheus/client_model v0.2.0 // indirect github.com/prometheus/client_model v0.2.0 // indirect

25
go.sum
View File

@ -121,8 +121,8 @@ github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1/go.
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c= github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb h1:wCrNShQidLmvVWn/0PikGmpdP0vtQmnvyRg3ZBEhczw= github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb h1:wCrNShQidLmvVWn/0PikGmpdP0vtQmnvyRg3ZBEhczw=
github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb/go.mod h1:wx3gB6dbIfBRcucp94PI9Bt3I0F2c/MyNEWuhzpWiwk= github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb/go.mod h1:wx3gB6dbIfBRcucp94PI9Bt3I0F2c/MyNEWuhzpWiwk=
github.com/fatedier/golib v0.1.1-0.20230311074156-2623b2569b10 h1:JjEXgytxMpWC6nK1u+Pskvaf2MPRnv/pxWmTlyVQMUI= github.com/fatedier/golib v0.1.1-0.20230320133937-a7edcc8c793d h1:/m9Atycn9uKRwwOkxv4c+zaugxRgkdSG/Eg3IJWOpNs=
github.com/fatedier/golib v0.1.1-0.20230311074156-2623b2569b10/go.mod h1:Wdn1pJ0dHB1lah6FPYwt4AO9NEmWI0OzW13dpzC9g4E= github.com/fatedier/golib v0.1.1-0.20230320133937-a7edcc8c793d/go.mod h1:Wdn1pJ0dHB1lah6FPYwt4AO9NEmWI0OzW13dpzC9g4E=
github.com/fatedier/kcp-go v2.0.4-0.20190803094908-fe8645b0a904+incompatible h1:ssXat9YXFvigNge/IkkZvFMn8yeYKFX+uI6wn2mLJ74= github.com/fatedier/kcp-go v2.0.4-0.20190803094908-fe8645b0a904+incompatible h1:ssXat9YXFvigNge/IkkZvFMn8yeYKFX+uI6wn2mLJ74=
github.com/fatedier/kcp-go v2.0.4-0.20190803094908-fe8645b0a904+incompatible/go.mod h1:YpCOaxj7vvMThhIQ9AfTOPW2sfztQR5WDfs7AflSy4s= github.com/fatedier/kcp-go v2.0.4-0.20190803094908-fe8645b0a904+incompatible/go.mod h1:YpCOaxj7vvMThhIQ9AfTOPW2sfztQR5WDfs7AflSy4s=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4= github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
@ -336,6 +336,11 @@ github.com/onsi/gomega v1.27.0 h1:QLidEla4bXUuZVFa4KX6JHCsuGgbi85LC/pCHrt/O08=
github.com/onsi/gomega v1.27.0/go.mod h1:i189pavgK95OSIipFBa74gC2V4qrQuvjuyGEr3GmbXA= github.com/onsi/gomega v1.27.0/go.mod h1:i189pavgK95OSIipFBa74gC2V4qrQuvjuyGEr3GmbXA=
github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc= github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic= github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
github.com/pion/logging v0.2.2/go.mod h1:k0/tDVsRCX2Mb2ZEmTqNa7CWsQPc+YYCB7Q+5pahoms=
github.com/pion/stun v0.4.0 h1:vgRrbBE2htWHy7l3Zsxckk7rkjnjOsSM7PHZnBwo8rk=
github.com/pion/stun v0.4.0/go.mod h1:QPsh1/SbXASntw3zkkrIk3ZJVKz4saBY2G7S10P3wCw=
github.com/pion/transport/v2 v2.0.0 h1:bsMYyqHCbkvHwj+eNCFBuxtlKndKfyGI2vaQmM3fIE4=
github.com/pion/transport/v2 v2.0.0/go.mod h1:HS2MEBJTwD+1ZI2eSXSvHJx/HnzQqRy2/LXxt6eVMHc=
github.com/pires/go-proxyproto v0.6.2 h1:KAZ7UteSOt6urjme6ZldyFm4wDe/z0ZUP0Yv0Dos0d8= github.com/pires/go-proxyproto v0.6.2 h1:KAZ7UteSOt6urjme6ZldyFm4wDe/z0ZUP0Yv0Dos0d8=
github.com/pires/go-proxyproto v0.6.2/go.mod h1:Odh9VFOZJCf9G8cLW5o435Xf1J95Jw9Gw5rnCjcwzAY= github.com/pires/go-proxyproto v0.6.2/go.mod h1:Odh9VFOZJCf9G8cLW5o435Xf1J95Jw9Gw5rnCjcwzAY=
github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA= github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
@ -415,6 +420,7 @@ github.com/spf13/viper v1.7.0/go.mod h1:8WkrPz2fc9jxqZNCJI/76HCieCp4Q8HaLFoCha5q
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw= github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
@ -422,8 +428,9 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU= github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw= github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161 h1:89CEmDvlq/F7SJEOqkIdNDGJXrQIhuIx9D2DBXjavSU= github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161 h1:89CEmDvlq/F7SJEOqkIdNDGJXrQIhuIx9D2DBXjavSU=
github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161/go.mod h1:wM7WEvslTq+iOEAMDLSzhVuOt5BRZ05WirO+b09GHQU= github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161/go.mod h1:wM7WEvslTq+iOEAMDLSzhVuOt5BRZ05WirO+b09GHQU=
@ -439,6 +446,7 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74= github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74= github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k= github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU= go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU= go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8= go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
@ -459,6 +467,7 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20201012173705-84dcc777aaee/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= golang.org/x/crypto v0.0.0-20201012173705-84dcc777aaee/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4= golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/crypto v0.4.0 h1:UVQgzMY87xqpKNgb+kDsll2Igd33HszWHFLmpaRMq/8= golang.org/x/crypto v0.4.0 h1:UVQgzMY87xqpKNgb+kDsll2Igd33HszWHFLmpaRMq/8=
golang.org/x/crypto v0.4.0/go.mod h1:3quD/ATkf6oY+rnes5c3ExXTbLc8mueNue5/DoinL80= golang.org/x/crypto v0.4.0/go.mod h1:3quD/ATkf6oY+rnes5c3ExXTbLc8mueNue5/DoinL80=
@ -499,6 +508,7 @@ golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA= golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA= golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA= golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/mod v0.8.0 h1:LUYupSeNrTNCGzR/hVBk2NHZO4hXcVaW1k4Qx7rjPx8= golang.org/x/mod v0.8.0 h1:LUYupSeNrTNCGzR/hVBk2NHZO4hXcVaW1k4Qx7rjPx8=
golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs= golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@ -551,7 +561,9 @@ golang.org/x/net v0.0.0-20220412020605-290c469a71a5/go.mod h1:CfG3xpIq0wQ8r1q4Su
golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk= golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
golang.org/x/net v0.0.0-20220607020251-c690dde0001d/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c= golang.org/x/net v0.0.0-20220607020251-c690dde0001d/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c= golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.0.0-20220826154423-83b083e8dc8b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk= golang.org/x/net v0.0.0-20220826154423-83b083e8dc8b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco=
golang.org/x/net v0.7.0 h1:rJrUqqhjsgNp7KqAIc25s9pZnjU7TUcSY7HcVZjdn1g= golang.org/x/net v0.7.0 h1:rJrUqqhjsgNp7KqAIc25s9pZnjU7TUcSY7HcVZjdn1g=
golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs= golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@ -589,6 +601,7 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@ -659,11 +672,15 @@ golang.org/x/sys v0.0.0-20220502124256-b6088ccd6cba/go.mod h1:oPkhp1MJrh7nUepCBc
golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220610221304-9f5ed59c137d/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220610221304-9f5ed59c137d/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU= golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@ -673,6 +690,7 @@ golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.7.0 h1:4BRB4x83lYWy72KwLD/qYDuTu7q9PjSagHvijDw7cLo= golang.org/x/text v0.7.0 h1:4BRB4x83lYWy72KwLD/qYDuTu7q9PjSagHvijDw7cLo=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8= golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@ -734,6 +752,7 @@ golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.3/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk= golang.org/x/tools v0.1.3/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.4/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk= golang.org/x/tools v0.1.4/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk= golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.6.0 h1:BOw41kyTf3PuCW1pVQf8+Cyg8pMlkYB1oo9iJ6D/lKM= golang.org/x/tools v0.6.0 h1:BOw41kyTf3PuCW1pVQf8+Cyg8pMlkYB1oo9iJ6D/lKM=
golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU= golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

View File

@ -41,6 +41,11 @@ type ClientCommonConf struct {
// ServerPort specifies the port to connect to the server on. By default, // ServerPort specifies the port to connect to the server on. By default,
// this value is 7000. // this value is 7000.
ServerPort int `ini:"server_port" json:"server_port"` ServerPort int `ini:"server_port" json:"server_port"`
// ServerUDPPort specifies the server port to help penetrate NAT hole. By default, this value is 0.
// This parameter is only used when executing "nathole discover" in the command line.
ServerUDPPort int `ini:"server_udp_port" json:"server_udp_port"`
// STUN server to help penetrate NAT hole.
NatHoleSTUNServer string `ini:"nat_hole_stun_server" json:"nat_hole_stun_server"`
// The maximum amount of time a dial to server will wait for a connect to complete. // The maximum amount of time a dial to server will wait for a connect to complete.
DialServerTimeout int64 `ini:"dial_server_timeout" json:"dial_server_timeout"` DialServerTimeout int64 `ini:"dial_server_timeout" json:"dial_server_timeout"`
// DialServerKeepAlive specifies the interval between keep-alive probes for an active network connection between frpc and frps. // DialServerKeepAlive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
@ -172,6 +177,7 @@ func GetDefaultClientConf() ClientCommonConf {
ClientConfig: auth.GetDefaultClientConf(), ClientConfig: auth.GetDefaultClientConf(),
ServerAddr: "0.0.0.0", ServerAddr: "0.0.0.0",
ServerPort: 7000, ServerPort: 7000,
NatHoleSTUNServer: "stun.easyvoip.com:3478",
DialServerTimeout: 10, DialServerTimeout: 10,
DialServerKeepAlive: 7200, DialServerKeepAlive: 7200,
HTTPProxy: os.Getenv("http_proxy"), HTTPProxy: os.Getenv("http_proxy"),

View File

@ -260,6 +260,7 @@ func Test_LoadClientCommonConf(t *testing.T) {
}, },
ServerAddr: "0.0.0.9", ServerAddr: "0.0.0.9",
ServerPort: 7009, ServerPort: 7009,
NatHoleSTUNServer: "stun.easyvoip.com:3478",
DialServerTimeout: 10, DialServerTimeout: 10,
DialServerKeepAlive: 7200, DialServerKeepAlive: 7200,
HTTPProxy: "http://user:passwd@192.168.1.128:8080", HTTPProxy: "http://user:passwd@192.168.1.128:8080",

View File

@ -42,3 +42,7 @@ func ReadMsgInto(c io.Reader, msg Message) (err error) {
func WriteMsg(c io.Writer, msg interface{}) (err error) { func WriteMsg(c io.Writer, msg interface{}) (err error) {
return msgCtl.WriteMsg(c, msg) return msgCtl.WriteMsg(c, msg)
} }
func Pack(msg interface{}) (data []byte, err error) {
return msgCtl.Pack(msg)
}

View File

@ -37,6 +37,8 @@ const (
TypeNatHoleResp = 'm' TypeNatHoleResp = 'm'
TypeNatHoleClientDetectOK = 'd' TypeNatHoleClientDetectOK = 'd'
TypeNatHoleSid = '5' TypeNatHoleSid = '5'
TypeNatHoleBinding = 'b'
TypeNatHoleBindingResp = '6'
) )
var msgTypeMap = map[byte]interface{}{ var msgTypeMap = map[byte]interface{}{
@ -58,6 +60,8 @@ var msgTypeMap = map[byte]interface{}{
TypeNatHoleResp: NatHoleResp{}, TypeNatHoleResp: NatHoleResp{},
TypeNatHoleClientDetectOK: NatHoleClientDetectOK{}, TypeNatHoleClientDetectOK: NatHoleClientDetectOK{},
TypeNatHoleSid: NatHoleSid{}, TypeNatHoleSid: NatHoleSid{},
TypeNatHoleBinding: NatHoleBinding{},
TypeNatHoleBindingResp: NatHoleBindingResp{},
} }
// When frpc start, client send this message to login to server. // When frpc start, client send this message to login to server.
@ -193,3 +197,13 @@ type NatHoleClientDetectOK struct{}
type NatHoleSid struct { type NatHoleSid struct {
Sid string `json:"sid,omitempty"` Sid string `json:"sid,omitempty"`
} }
type NatHoleBinding struct {
TransactionID string `json:"transaction_id,omitempty"`
}
type NatHoleBindingResp struct {
TransactionID string `json:"transaction_id,omitempty"`
Address string `json:"address,omitempty"`
Error string `json:"error,omitempty"`
}

74
pkg/nathole/classify.go Normal file
View File

@ -0,0 +1,74 @@
// 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 nathole
import (
"fmt"
"net"
)
const (
EasyNAT = "EasyNAT"
HardNAT = "HardNAT"
BehaviorNoChange = "BehaviorNoChange"
BehaviorIPChanged = "BehaviorIPChanged"
BehaviorPortChanged = "BehaviorPortChanged"
BehaviorBothChanged = "BehaviorBothChanged"
)
// ClassifyNATType classify NAT type by given addresses.
func ClassifyNATType(addresses []string) (string, string, error) {
if len(addresses) <= 1 {
return "", "", fmt.Errorf("not enough addresses")
}
ipChanged := false
portChanged := false
var baseIP, basePort string
for _, addr := range addresses {
ip, port, err := net.SplitHostPort(addr)
if err != nil {
return "", "", err
}
if baseIP == "" {
baseIP = ip
basePort = port
continue
}
if baseIP != ip {
ipChanged = true
}
if basePort != port {
portChanged = true
}
if ipChanged && portChanged {
break
}
}
switch {
case ipChanged && portChanged:
return HardNAT, BehaviorBothChanged, nil
case ipChanged:
return HardNAT, BehaviorIPChanged, nil
case portChanged:
return HardNAT, BehaviorPortChanged, nil
default:
return EasyNAT, BehaviorNoChange, nil
}
}

192
pkg/nathole/discovery.go Normal file
View File

@ -0,0 +1,192 @@
// 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 nathole
import (
"fmt"
"net"
"time"
"github.com/pion/stun"
"github.com/fatedier/frp/pkg/msg"
)
var responseTimeout = 3 * time.Second
type Address struct {
IP string
Port int
}
type Message struct {
Body []byte
Addr string
}
func Discover(serverAddress string, stunServers []string, key []byte) ([]string, error) {
// parse address to net.Address
stunAddresses := make([]net.Addr, 0, len(stunServers))
for _, stunServer := range stunServers {
addr, err := net.ResolveUDPAddr("udp4", stunServer)
if err != nil {
return nil, err
}
stunAddresses = append(stunAddresses, addr)
}
serverAddr, err := net.ResolveUDPAddr("udp4", serverAddress)
if err != nil {
return nil, err
}
// create a discoverConn and get response from messageChan
discoverConn, err := listen()
if err != nil {
return nil, err
}
defer discoverConn.Close()
go discoverConn.readLoop()
addresses := make([]string, 0, len(stunServers)+1)
// get external address from frp server
externalAddr, err := discoverFromServer(discoverConn, serverAddr, key)
if err != nil {
return nil, err
}
addresses = append(addresses, externalAddr)
for _, stunAddr := range stunAddresses {
// get external address from stun server
externalAddr, err = discoverFromStunServer(discoverConn, stunAddr)
if err != nil {
return nil, err
}
addresses = append(addresses, externalAddr)
}
return addresses, nil
}
func discoverFromServer(c *discoverConn, addr net.Addr, key []byte) (string, error) {
m := &msg.NatHoleBinding{
TransactionID: NewTransactionID(),
}
buf, err := EncodeMessage(m, key)
if err != nil {
return "", err
}
if _, err := c.conn.WriteTo(buf, addr); err != nil {
return "", err
}
var respMsg msg.NatHoleBindingResp
select {
case rawMsg := <-c.messageChan:
if err := DecodeMessageInto(rawMsg.Body, key, &respMsg); err != nil {
return "", err
}
case <-time.After(responseTimeout):
return "", fmt.Errorf("wait response from frp server timeout")
}
if respMsg.TransactionID == "" {
return "", fmt.Errorf("error format: no transaction id found")
}
if respMsg.Error != "" {
return "", fmt.Errorf("get externalAddr from frp server error: %s", respMsg.Error)
}
return respMsg.Address, nil
}
func discoverFromStunServer(c *discoverConn, addr net.Addr) (string, error) {
request, err := stun.Build(stun.TransactionID, stun.BindingRequest)
if err != nil {
return "", err
}
if err = request.NewTransactionID(); err != nil {
return "", err
}
if _, err := c.conn.WriteTo(request.Raw, addr); err != nil {
return "", err
}
var m stun.Message
select {
case msg := <-c.messageChan:
m.Raw = msg.Body
if err := m.Decode(); err != nil {
return "", err
}
case <-time.After(responseTimeout):
return "", fmt.Errorf("wait response from stun server timeout")
}
xorAddr := &stun.XORMappedAddress{}
mappedAddr := &stun.MappedAddress{}
if err := xorAddr.GetFrom(&m); err == nil {
return xorAddr.String(), nil
}
if err := mappedAddr.GetFrom(&m); err == nil {
return mappedAddr.String(), nil
}
return "", fmt.Errorf("no address found")
}
type discoverConn struct {
conn *net.UDPConn
localAddr net.Addr
messageChan chan *Message
}
func listen() (*discoverConn, error) {
conn, err := net.ListenUDP("udp4", nil)
if err != nil {
return nil, err
}
return &discoverConn{
conn: conn,
localAddr: conn.LocalAddr(),
messageChan: make(chan *Message, 10),
}, nil
}
func (c *discoverConn) Close() error {
if c.messageChan != nil {
close(c.messageChan)
c.messageChan = nil
}
return c.conn.Close()
}
func (c *discoverConn) readLoop() {
for {
buf := make([]byte, 1024)
n, addr, err := c.conn.ReadFromUDP(buf)
if err != nil {
return
}
buf = buf[:n]
c.messageChan <- &Message{
Body: buf,
Addr: addr.String(),
}
}
}

View File

@ -1,3 +1,17 @@
// 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 nathole package nathole
import ( import (
@ -7,6 +21,7 @@ import (
"sync" "sync"
"time" "time"
"github.com/fatedier/golib/crypto"
"github.com/fatedier/golib/errors" "github.com/fatedier/golib/errors"
"github.com/fatedier/golib/pool" "github.com/fatedier/golib/pool"
@ -18,6 +33,11 @@ import (
// NatHoleTimeout seconds. // NatHoleTimeout seconds.
var NatHoleTimeout int64 = 10 var NatHoleTimeout int64 = 10
func NewTransactionID() string {
id, _ := util.RandID()
return fmt.Sprintf("%d%s", time.Now().Unix(), id)
}
type SidRequest struct { type SidRequest struct {
Sid string Sid string
NotifyCh chan struct{} NotifyCh chan struct{}
@ -29,10 +49,11 @@ type Controller struct {
clientCfgs map[string]*ClientCfg clientCfgs map[string]*ClientCfg
sessions map[string]*Session sessions map[string]*Session
encryptionKey []byte
mu sync.RWMutex mu sync.RWMutex
} }
func NewController(udpBindAddr string) (nc *Controller, err error) { func NewController(udpBindAddr string, encryptionKey []byte) (nc *Controller, err error) {
addr, err := net.ResolveUDPAddr("udp", udpBindAddr) addr, err := net.ResolveUDPAddr("udp", udpBindAddr)
if err != nil { if err != nil {
return nil, err return nil, err
@ -45,6 +66,7 @@ func NewController(udpBindAddr string) (nc *Controller, err error) {
listener: lconn, listener: lconn,
clientCfgs: make(map[string]*ClientCfg), clientCfgs: make(map[string]*ClientCfg),
sessions: make(map[string]*Session), sessions: make(map[string]*Session),
encryptionKey: encryptionKey,
} }
return nc, nil return nc, nil
} }
@ -72,24 +94,30 @@ func (nc *Controller) Run() {
buf := pool.GetBuf(1024) buf := pool.GetBuf(1024)
n, raddr, err := nc.listener.ReadFromUDP(buf) n, raddr, err := nc.listener.ReadFromUDP(buf)
if err != nil { if err != nil {
log.Trace("nat hole listener read from udp error: %v", err) log.Warn("nat hole listener read from udp error: %v", err)
return return
} }
plain, err := crypto.Decode(buf[:n], nc.encryptionKey)
rd := bytes.NewReader(buf[:n])
rawMsg, err := msg.ReadMsg(rd)
if err != nil { if err != nil {
log.Trace("read nat hole message error: %v", err) log.Warn("nathole listener decode from %s error: %v", raddr.String(), err)
continue
}
rawMsg, err := msg.ReadMsg(bytes.NewReader(plain))
if err != nil {
log.Warn("read nat hole message error: %v", err)
continue continue
} }
switch m := rawMsg.(type) { switch m := rawMsg.(type) {
case *msg.NatHoleBinding:
go nc.HandleBinding(m, raddr)
case *msg.NatHoleVisitor: case *msg.NatHoleVisitor:
go nc.HandleVisitor(m, raddr) go nc.HandleVisitor(m, raddr)
case *msg.NatHoleClient: case *msg.NatHoleClient:
go nc.HandleClient(m, raddr) go nc.HandleClient(m, raddr)
default: default:
log.Trace("error nat hole message type") log.Trace("unknown nat hole message type")
continue continue
} }
pool.PutBuf(buf) pool.PutBuf(buf)
@ -102,6 +130,29 @@ func (nc *Controller) GenSid() string {
return fmt.Sprintf("%d%s", t, id) return fmt.Sprintf("%d%s", t, id)
} }
func (nc *Controller) HandleBinding(m *msg.NatHoleBinding, raddr *net.UDPAddr) {
log.Trace("handle binding message from %s", raddr.String())
resp := &msg.NatHoleBindingResp{
TransactionID: m.TransactionID,
Address: raddr.String(),
}
plain, err := msg.Pack(resp)
if err != nil {
log.Error("pack nat hole binding response error: %v", err)
return
}
buf, err := crypto.Encode(plain, nc.encryptionKey)
if err != nil {
log.Error("encode nat hole binding response error: %v", err)
return
}
_, err = nc.listener.WriteToUDP(buf, raddr)
if err != nil {
log.Error("write nat hole binding response to %s error: %v", raddr.String(), err)
return
}
}
func (nc *Controller) HandleVisitor(m *msg.NatHoleVisitor, raddr *net.UDPAddr) { func (nc *Controller) HandleVisitor(m *msg.NatHoleVisitor, raddr *net.UDPAddr) {
sid := nc.GenSid() sid := nc.GenSid()
session := &Session{ session := &Session{

48
pkg/nathole/utils.go Normal file
View File

@ -0,0 +1,48 @@
// 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 nathole
import (
"bytes"
"github.com/fatedier/golib/crypto"
"github.com/fatedier/frp/pkg/msg"
)
func EncodeMessage(m msg.Message, key []byte) ([]byte, error) {
buffer := bytes.NewBuffer(nil)
if err := msg.WriteMsg(buffer, m); err != nil {
return nil, err
}
buf, err := crypto.Encode(buffer.Bytes(), key)
if err != nil {
return nil, err
}
return buf, nil
}
func DecodeMessageInto(data, key []byte, m msg.Message) error {
buf, err := crypto.Decode(data, key)
if err != nil {
return err
}
if err := msg.ReadMsgInto(bytes.NewReader(buf), m); err != nil {
return err
}
return nil
}

View File

@ -293,7 +293,7 @@ func NewService(cfg config.ServerCommonConf) (svr *Service, err error) {
if cfg.BindUDPPort > 0 { if cfg.BindUDPPort > 0 {
var nc *nathole.Controller var nc *nathole.Controller
address := net.JoinHostPort(cfg.BindAddr, strconv.Itoa(cfg.BindUDPPort)) address := net.JoinHostPort(cfg.BindAddr, strconv.Itoa(cfg.BindUDPPort))
nc, err = nathole.NewController(address) nc, err = nathole.NewController(address, []byte(cfg.Token))
if err != nil { if err != nil {
err = fmt.Errorf("create nat hole controller error, %v", err) err = fmt.Errorf("create nat hole controller error, %v", err)
return return