mirror of https://github.com/slackhq/nebula.git
108 lines
2.5 KiB
Go
108 lines
2.5 KiB
Go
package overlay
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"os/exec"
|
|
"strconv"
|
|
|
|
"github.com/songgao/water"
|
|
)
|
|
|
|
type WindowsWaterTun struct {
|
|
Device string
|
|
Cidr *net.IPNet
|
|
MTU int
|
|
UnsafeRoutes []Route
|
|
|
|
*water.Interface
|
|
}
|
|
|
|
func newWindowsWaterTun(deviceName string, cidr *net.IPNet, defaultMTU int, unsafeRoutes []Route, txQueueLen int) (ifce *WindowsWaterTun, err error) {
|
|
// NOTE: You cannot set the deviceName under Windows, so you must check tun.Device after calling .Activate()
|
|
return &WindowsWaterTun{
|
|
Cidr: cidr,
|
|
MTU: defaultMTU,
|
|
UnsafeRoutes: unsafeRoutes,
|
|
}, nil
|
|
}
|
|
|
|
func (c *WindowsWaterTun) Activate() error {
|
|
var err error
|
|
c.Interface, err = water.New(water.Config{
|
|
DeviceType: water.TUN,
|
|
PlatformSpecificParams: water.PlatformSpecificParams{
|
|
ComponentID: "tap0901",
|
|
Network: c.Cidr.String(),
|
|
},
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("Activate failed: %v", err)
|
|
}
|
|
|
|
c.Device = c.Interface.Name()
|
|
|
|
// TODO use syscalls instead of exec.Command
|
|
err = exec.Command(
|
|
`C:\Windows\System32\netsh.exe`, "interface", "ipv4", "set", "address",
|
|
fmt.Sprintf("name=%s", c.Device),
|
|
"source=static",
|
|
fmt.Sprintf("addr=%s", c.Cidr.IP),
|
|
fmt.Sprintf("mask=%s", net.IP(c.Cidr.Mask)),
|
|
"gateway=none",
|
|
).Run()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to run 'netsh' to set address: %s", err)
|
|
}
|
|
err = exec.Command(
|
|
`C:\Windows\System32\netsh.exe`, "interface", "ipv4", "set", "interface",
|
|
c.Device,
|
|
fmt.Sprintf("mtu=%d", c.MTU),
|
|
).Run()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to run 'netsh' to set MTU: %s", err)
|
|
}
|
|
|
|
iface, err := net.InterfaceByName(c.Device)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to find interface named %s: %v", c.Device, err)
|
|
}
|
|
|
|
for _, r := range c.UnsafeRoutes {
|
|
err = exec.Command(
|
|
"C:\\Windows\\System32\\route.exe", "add", r.Cidr.String(), r.Via.String(), "IF", strconv.Itoa(iface.Index), "METRIC", strconv.Itoa(r.Metric),
|
|
).Run()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to add the unsafe_route %s: %v", r.Cidr.String(), err)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (c *WindowsWaterTun) CidrNet() *net.IPNet {
|
|
return c.Cidr
|
|
}
|
|
|
|
func (c *WindowsWaterTun) DeviceName() string {
|
|
return c.Device
|
|
}
|
|
|
|
func (c *WindowsWaterTun) WriteRaw(b []byte) error {
|
|
_, err := c.Write(b)
|
|
return err
|
|
}
|
|
|
|
func (c *WindowsWaterTun) Close() error {
|
|
if c.Interface == nil {
|
|
return nil
|
|
}
|
|
|
|
return c.Interface.Close()
|
|
}
|
|
|
|
func (t *WindowsWaterTun) NewMultiQueueReader() (io.ReadWriteCloser, error) {
|
|
return nil, fmt.Errorf("TODO: multiqueue not implemented for windows")
|
|
}
|