mirror of
https://github.com/octoleo/syncthing.git
synced 2024-11-20 11:55:18 +00:00
41 lines
793 B
Go
41 lines
793 B
Go
|
package gateway
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"io/ioutil"
|
||
|
|
"net"
|
||
|
|
"os/exec"
|
||
|
|
)
|
||
|
|
|
||
|
|
func DiscoverGateway() (ip net.IP, err error) {
|
||
|
|
routeCmd := exec.Command("/sbin/route", "-n", "get", "0.0.0.0")
|
||
|
|
stdOut, err := routeCmd.StdoutPipe()
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if err = routeCmd.Start(); err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
output, err := ioutil.ReadAll(stdOut)
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// Darwin route out format is always like this:
|
||
|
|
// route to: default
|
||
|
|
// destination: default
|
||
|
|
// mask: default
|
||
|
|
// gateway: 192.168.1.1
|
||
|
|
outputLines := bytes.Split(output, []byte("\n"))
|
||
|
|
for _, line := range outputLines {
|
||
|
|
if bytes.Contains(line, []byte("gateway:")) {
|
||
|
|
gatewayFields := bytes.Fields(line)
|
||
|
|
ip = net.ParseIP(string(gatewayFields[1]))
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
err = routeCmd.Wait()
|
||
|
|
return
|
||
|
|
}
|