mirror of
https://github.com/net-byte/vtun
synced 2024-03-14 10:50:03 +08:00
Add vtun
This commit is contained in:
alex tsai
commit
51ab983d43
17
.gitignore
vendored
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17
.gitignore
vendored
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@ -0,0 +1,17 @@
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# Mac OS X files
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.DS_Store
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# Binaries for programs and plugins
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*.dll
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*.so
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*.dylib
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# Test binary, build with `go test -c`
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*.test
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# Output of the go coverage tool, specifically when used with LiteIDE
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*.out
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# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
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.glide/
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logs/
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bin/
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9
Dockerfile
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9
Dockerfile
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FROM golang:1.14.3-alpine
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WORKDIR /app
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COPY . /app
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ENV GO111MODULE=on
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RUN go build -o ./bin/vtun ./main.go
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ENTRYPOINT ["./bin/vtun"]
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20
LICENSE
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20
LICENSE
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The MIT License
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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18
README.md
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18
README.md
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# vtun
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A simple p2p vpn.
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# Usage
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```
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Usage of ./vtun:
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-k string
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Encrypt key (default "6da62287-979a-4eb4-a5ab-8b3d89da134b")
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-l string
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Local tun interface IP/MASK like 172.16.0.1/24 (default "172.16.0.1/24")
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-p int
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UDP port (default 2001)
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-r string
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Remote server external IP like 172.16.0.2 (default "172.16.0.2")
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```
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135
cmd/vtun.go
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135
cmd/vtun.go
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package cmd
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import (
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"crypto/aes"
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"crypto/cipher"
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"crypto/md5"
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"encoding/hex"
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"fmt"
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"log"
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"net"
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"os"
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"os/exec"
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"runtime"
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"github.com/songgao/water"
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)
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const (
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BufferSize = 1500
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MTU = "1300"
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)
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// New vtun
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func New(local *string, remote *string, port *int, key *string) {
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os := runtime.GOOS
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if "linux" != os {
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log.Fatal("Only support linux!")
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return
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}
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hashKey := createHash(*key)
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// create tun
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config := water.Config{
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DeviceType: water.TAP,
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}
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config.Name = "vtun"
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iface, err := water.New(config)
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if err != nil {
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log.Fatal(err)
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}
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if nil != err {
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log.Fatalln("Unable to allocate TUN interface:", err)
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}
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log.Println("Interface allocated:", iface.Name())
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// config tun
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configTun(local, iface)
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// start udp listener
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remoteAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%v", *remote, *port))
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if nil != err {
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log.Fatalln("Unable to resolve remote addr:", err)
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}
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localAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf(":%v", *port))
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if nil != err {
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log.Fatalln("Unable to get UDP socket:", err)
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}
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conn, err := net.ListenUDP("udp", localAddr)
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if nil != err {
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log.Fatalln("Unable to listen on UDP socket:", err)
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}
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defer conn.Close()
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// read data from remote and write data to tun
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go func() {
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buf := make([]byte, BufferSize)
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for {
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n, _, err := conn.ReadFromUDP(buf)
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if err != nil || n == 0 {
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break
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}
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b := buf[:n]
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// aes decrypt
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decrypt(&b, hashKey)
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iface.Write(b)
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}
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}()
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// read data from tun and write to remote
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packet := make([]byte, BufferSize)
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for {
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n, err := iface.Read(packet)
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if err != nil || n == 0 {
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break
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}
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b := packet[:n]
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// aes encrypt
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encrypt(&b, hashKey)
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conn.WriteToUDP(b, remoteAddr)
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}
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}
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func configTun(local *string, iface *water.Interface) {
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execCmd("/sbin/ip", "link", "set", "dev", iface.Name(), "mtu", MTU)
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execCmd("/sbin/ip", "addr", "add", *local, "dev", iface.Name())
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execCmd("/sbin/ip", "link", "set", "dev", iface.Name(), "up")
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}
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func execCmd(c string, args ...string) {
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cmd := exec.Command(c, args...)
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cmd.Stderr = os.Stderr
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cmd.Stdout = os.Stdout
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cmd.Stdin = os.Stdin
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err := cmd.Run()
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if nil != err {
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log.Fatalln("Error running /sbin/ip:", err)
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}
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}
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func createHash(key string) []byte {
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hasher := md5.New()
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hasher.Write([]byte(key))
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return []byte(hex.EncodeToString(hasher.Sum(nil)))
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}
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func encrypt(data *[]byte, key []byte) {
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block, err := aes.NewCipher(key)
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if err != nil {
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log.Println(err)
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}
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iv := key[:aes.BlockSize]
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stream := cipher.NewCFBEncrypter(block, iv)
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dest := make([]byte, len(*data))
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stream.XORKeyStream(dest, *data)
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data = nil
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data = &dest
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}
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func decrypt(data *[]byte, key []byte) {
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block, err := aes.NewCipher(key)
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if err != nil {
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log.Println(err)
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}
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iv := key[:aes.BlockSize]
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stream := cipher.NewCFBDecrypter(block, iv)
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dest := make([]byte, len(*data))
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stream.XORKeyStream(dest, *data)
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data = nil
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data = &dest
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}
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9
go.mod
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9
go.mod
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module vtun
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go 1.14
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require (
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github.com/marten-seemann/quic-conn v0.0.0-20191204020628-6e719687462b
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github.com/songgao/water v0.0.0-20200317203138-2b4b6d7c09d8
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golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3
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)
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46
go.sum
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46
go.sum
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github.com/alangpierce/go-forceexport v0.0.0-20160317203124-8f1d6941cd75/go.mod h1:uAXEEpARkRhCZfEvy/y0Jcc888f9tHCc1W7/UeEtreE=
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github.com/cheekybits/genny v1.0.0 h1:uGGa4nei+j20rOSeDeP5Of12XVm7TGUd4dJA9RDitfE=
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github.com/cheekybits/genny v1.0.0/go.mod h1:+tQajlRqAUrPI7DOSpB0XAqZYtQakVtB7wXkRAgjxjQ=
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github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
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github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/protobuf v1.3.0 h1:kbxbvI4Un1LUWKxufD+BiE6AEExYYgkQLQmLFqA1LFk=
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github.com/golang/protobuf v1.3.0/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0=
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github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
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github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
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github.com/lucas-clemente/quic-go v0.14.0 h1:xmWt9+sRgvAAXmi2S9lrikUtNUPwxeOy400LD+I3Qw0=
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github.com/lucas-clemente/quic-go v0.14.0/go.mod h1:Vn3/Fb0/77b02SGhQk36KzOUmXgVpFfizUfW5WMaqyU=
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github.com/marten-seemann/chacha20 v0.2.0 h1:f40vqzzx+3GdOmzQoItkLX5WLvHgPgyYqFFIO5Gh4hQ=
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github.com/marten-seemann/chacha20 v0.2.0/go.mod h1:HSdjFau7GzYRj+ahFNwsO3ouVJr1HFkWoEwNDb4TMtE=
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github.com/marten-seemann/qpack v0.1.0/go.mod h1:LFt1NU/Ptjip0C2CPkhimBz5CGE3WGDAUWqna+CNTrI=
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github.com/marten-seemann/qtls v0.4.1 h1:YlT8QP3WCCvvok7MGEZkMldXbyqgr8oFg5/n8Gtbkks=
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github.com/marten-seemann/qtls v0.4.1/go.mod h1:pxVXcHHw1pNIt8Qo0pwSYQEoZ8yYOOPXTCZLQQunvRc=
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github.com/marten-seemann/quic-conn v0.0.0-20191204020628-6e719687462b h1:o3bbMw41/oEYaoqS5KugYhqAkO1QtqI+IPpi/SsGoME=
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github.com/marten-seemann/quic-conn v0.0.0-20191204020628-6e719687462b/go.mod h1:s6F5Us7rXwvhuJH4/E5AcncOlo2PV5DrIV2cciSuKq8=
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github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
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github.com/onsi/ginkgo v1.7.0 h1:WSHQ+IS43OoUrWtD1/bbclrwK8TTH5hzp+umCiuxHgs=
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github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
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github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
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github.com/songgao/water v0.0.0-20200317203138-2b4b6d7c09d8 h1:TG/diQgUe0pntT/2D9tmUCz4VNwm9MfrtPr0SU2qSX8=
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github.com/songgao/water v0.0.0-20200317203138-2b4b6d7c09d8/go.mod h1:P5HUIBuIWKbyjl083/loAegFkfbFNx5i2qEP4CNbm7E=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472 h1:Gv7RPwsi3eZ2Fgewe3CBsuOebPwO27PoXzRpJPsvSSM=
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golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
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golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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golang.org/x/net v0.0.0-20190228165749-92fc7df08ae7/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
|
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golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 h1:0GoQqolDA55aaLxZyTzK/Y2ePZzZTUrRacwib7cNsYQ=
|
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golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
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golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
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golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
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golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
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golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd h1:DBH9mDw0zluJT/R+nGuV3jWFWLFaHyYZWD4tOT+cjn0=
|
||||
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
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google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
|
||||
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
|
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gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
|
||||
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
|
||||
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
27
main.go
Normal file
27
main.go
Normal file
@ -0,0 +1,27 @@
|
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package main
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import (
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"flag"
|
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"log"
|
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vtun "vtun/cmd"
|
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)
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var (
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local = flag.String("l", "172.16.0.1/24", "Local tun interface IP/MASK like 172.16.0.1/24")
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remote = flag.String("r", "172.16.0.2", "Remote server external IP like 172.16.0.2")
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port = flag.Int("p", 2001, "UDP port")
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key = flag.String("k", "6da62287-979a-4eb4-a5ab-8b3d89da134b", "Encrypt key")
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)
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func main() {
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flag.Parse()
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if "" == *local {
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flag.Usage()
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log.Fatalln("local ip is not specified")
|
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}
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if "" == *remote {
|
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flag.Usage()
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log.Fatalln("remote ip is not specified")
|
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}
|
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vtun.New(local, remote, port, key)
|
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}
|
||||
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