yggdrasil-network/yggdrasil-go
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Drop Water, use Wireguard tun library, drop TAP support

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This commit is contained in:
Neil Alexander 2019-11-22 16:43:50 +00:00
parent 07ce8cde7a
commit f5517acc81
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GPG key ID: A02A2019A2BB0944
20 changed files with 146 additions and 616 deletions
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62
src/tuntap/tun_windows.go
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@ -7,69 +7,23 @@ import (
"strings"
"time"
water "github.com/yggdrasil-network/water"
wgtun "golang.zx2c4.com/wireguard/tun"
)
// This is to catch Windows platforms
// Configures the TAP adapter with the correct IPv6 address and MTU. On Windows
// we don't make use of a direct operating system API to do this - we instead
// delegate the hard work to "netsh".
func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int) error {
if !iftapmode {
tun.log.Warnln("Warning: TUN mode is not supported on this platform, defaulting to TAP")
iftapmode = true
}
config := water.Config{DeviceType: water.TAP}
config.PlatformSpecificParams.ComponentID = "tap0901"
config.PlatformSpecificParams.Network = "169.254.0.1/32"
if ifname == "auto" {
config.PlatformSpecificParams.InterfaceName = ""
} else {
config.PlatformSpecificParams.InterfaceName = ifname
}
iface, err := water.New(config)
if err != nil {
return err
}
if iface.Name() == "" {
return errors.New("unable to find TAP adapter with component ID " + config.PlatformSpecificParams.ComponentID)
}
// Reset the adapter - this invalidates iface so we'll need to get a new one
cmd := exec.Command("netsh", "interface", "set", "interface", iface.Name(), "admin=DISABLED")
tun.log.Debugln("netsh command:", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
if err != nil {
tun.log.Errorln("Windows netsh failed:", err)
tun.log.Traceln(string(output))
return err
}
time.Sleep(time.Second) // FIXME artifical delay to give netsh time to take effect
// Bring the interface back up
cmd = exec.Command("netsh", "interface", "set", "interface", iface.Name(), "admin=ENABLED")
tun.log.Debugln("netsh command:", strings.Join(cmd.Args, " "))
output, err = cmd.CombinedOutput()
if err != nil {
tun.log.Errorln("Windows netsh failed:", err)
tun.log.Traceln(string(output))
return err
}
time.Sleep(time.Second) // FIXME artifical delay to give netsh time to take effect
// Get a new iface
iface, err = water.New(config)
// Configures the TUN adapter with the correct IPv6 address and MTU.
func (tun *TunAdapter) setup(ifname string, addr string, mtu int) error {
iface, err := wgtun.CreateTUN(ifname, mtu)
if err != nil {
panic(err)
}
tun.iface = iface
tun.mtu = getSupportedMTU(mtu, iftapmode)
err = tun.setupMTU(tun.mtu)
if err != nil {
panic(err)
if mtu, err := iface.MTU(); err == nil {
tun.mtu = getSupportedMTU(mtu)
} else {
tun.mtu = 0
}
// Friendly output
tun.log.Infof("Interface name: %s", tun.iface.Name())
tun.log.Infof("Interface IPv6: %s", addr)
tun.log.Infof("Interface MTU: %d", tun.mtu)
return tun.setupAddress(addr)
}