7x31/anylink
1
0
Fork 0
mirror of https://github.com/bjdgyc/anylink.git synced 2025-08-11 16:18:02 +08:00
Code Issues Packages Projects Releases Wiki Activity

增加基于tap设备的桥接访问模式

Browse Source
This commit is contained in:
bjdgyc
2020-09-14 17:17:50 +08:00
parent 3b64de19b8
commit 31b1f12dbe
57 changed files with 2598 additions and 703 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
handler/link_tun.go
View File

@@ -3,13 +3,13 @@ package handler
import (
"fmt"
"log"
"os/exec"
"github.com/bjdgyc/anylink/common"
"github.com/bjdgyc/anylink/sessdata"
"github.com/songgao/water"
)
func testTun() {
func checkTun() {
// 测试tun
cfg := water.Config{
DeviceType: water.TUN,
@@ -19,17 +19,18 @@ func testTun() {
if err != nil {
log.Fatal("open tun err: ", err)
}
defer ifce.Close()
// 测试ip命令
cmdstr := fmt.Sprintf("ip link set dev %s up mtu %s multicast off", ifce.Name(), "1399")
err = execCmd([]string{cmdstr})
if err != nil {
log.Fatal("ip cmd err: ", err)
log.Fatal("testTun err: ", err)
}
ifce.Close()
}
// 创建tun网卡
func LinkTun(sess *ConnSession) {
func LinkTun(sess *sessdata.ConnSession) {
defer func() {
log.Println("LinkTun return")
sess.Close()
@@ -48,10 +49,9 @@ func LinkTun(sess *ConnSession) {
sess.TunName = ifce.Name()
defer ifce.Close()
// arp on
cmdstr1 := fmt.Sprintf("ip link set dev %s up mtu %s multicast off", ifce.Name(), sess.Mtu)
cmdstr1 := fmt.Sprintf("ip link set dev %s up mtu %d multicast off", ifce.Name(), sess.Mtu)
cmdstr2 := fmt.Sprintf("ip addr add dev %s local %s peer %s/32",
ifce.Name(), common.ServerCfg.Ipv4GateWay, sess.NetIp)
ifce.Name(), common.ServerCfg.Ipv4Gateway, sess.Ip)
cmdstr3 := fmt.Sprintf("sysctl -w net.ipv6.conf.%s.disable_ipv6=1", ifce.Name())
cmdStrs := []string{cmdstr1, cmdstr2, cmdstr3}
err = execCmd(cmdStrs)
@@ -61,21 +61,16 @@ func LinkTun(sess *ConnSession) {
go tunRead(ifce, sess)
var payload *Payload
var payload *sessdata.Payload
for {
select {
case payload = <-sess.PayloadIn:
case <-sess.Closed:
case <-sess.CloseChan:
return
}
// ip_src := waterutil.IPv4Source(payload.data)
// ip_des := waterutil.IPv4Destination(payload.data)
// ip_port := waterutil.IPv4DestinationPort(payload.data)
// fmt.Println("write: ", ip_src, ip_des.String(), ip_port, len(payload.data))
_, err = ifce.Write(payload.data)
_, err = ifce.Write(payload.Data)
if err != nil {
log.Println("tun Write err", err)
return
@@ -84,7 +79,7 @@ func LinkTun(sess *ConnSession) {
}
func tunRead(ifce *water.Interface, sess *ConnSession) {
func tunRead(ifce *water.Interface, sess *sessdata.ConnSession) {
defer func() {
log.Println("tunRead return")
ifce.Close()
@@ -95,34 +90,25 @@ func tunRead(ifce *water.Interface, sess *ConnSession) {
)
for {
packet := make([]byte, 1500)
n, err = ifce.Read(packet)
data := make([]byte, BufferSize)
n, err = ifce.Read(data)
if err != nil {
log.Println("tun Read err", n, err)
return
}
payload := &Payload{
ptype: 0x00,
data: packet[:n],
}
data = data[:n]
select {
case sess.PayloadOut <- payload:
case <-sess.Closed:
// ip_src := waterutil.IPv4Source(data)
// ip_dst := waterutil.IPv4Destination(data)
// ip_port := waterutil.IPv4DestinationPort(data)
// fmt.Println("sent:", ip_src, ip_dst, ip_port)
// packet := gopacket.NewPacket(data, layers.LayerTypeIPv4, gopacket.Default)
// fmt.Println("read:", packet)
if payloadOut(sess, sessdata.LTypeIPData, 0x00, data) {
return
}
}
}
func execCmd(cmdStrs []string) error {
for _, cmdStr := range cmdStrs {
cmd := exec.Command("bash", "-c", cmdStr)
b, err := cmd.CombinedOutput()
if err != nil {
log.Println(string(b), err)
return err
}
}
return nil
}