mirror of
https://github.com/yggdrasil-network/yggdrasil-go
synced 2024-09-20 01:30:19 +03:00
52 lines
1.3 KiB
Go
52 lines
1.3 KiB
Go
package yggdrasil
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// The linux platform specific tun parts
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// It depends on iproute2 being installed to set things on the tun device
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import "fmt"
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import "os/exec"
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import "strings"
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import water "github.com/songgao/water"
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func (tun *tunDevice) setup(ifname string, addr string, mtu int) error {
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config := water.Config{DeviceType: water.TUN}
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if ifname != "" && ifname != "auto" {
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config.Name = ifname
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}
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iface, err := water.New(config)
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if err != nil {
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panic(err)
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}
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tun.iface = iface
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tun.mtu = mtu //1280 // Lets default to the smallest thing allowed for now
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return tun.setupAddress(addr)
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}
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func (tun *tunDevice) setupAddress(addr string) error {
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// Set address
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cmd := exec.Command("ip", "-f", "inet6",
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"addr", "add", addr,
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"dev", tun.iface.Name())
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tun.core.log.Printf("ip command: %v", strings.Join(cmd.Args, " "))
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output, err := cmd.CombinedOutput()
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if err != nil {
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tun.core.log.Printf("Linux ip failed: %v.", err)
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tun.core.log.Println(string(output))
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return err
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}
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// Set MTU and bring device up
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cmd = exec.Command("ip", "link", "set",
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"dev", tun.iface.Name(),
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"mtu", fmt.Sprintf("%d", tun.mtu),
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"up")
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tun.core.log.Printf("ip command: %v", strings.Join(cmd.Args, " "))
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output, err = cmd.CombinedOutput()
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if err != nil {
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tun.core.log.Printf("Linux ip failed: %v.", err)
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tun.core.log.Println(string(output))
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return err
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}
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return nil
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}
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