48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
//go:build !darwin
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package route
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import (
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"fmt"
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"os/exec"
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"strings"
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)
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func addRoute(cidr, iface string) error {
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return runCmd("ip", "route", "add", cidr, "dev", iface)
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}
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func deleteRoute(cidr, iface string) error {
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return runCmd("ip", "route", "del", cidr, "dev", iface)
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}
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func addRouteVia(cidr, gateway string) error {
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return runCmd("ip", "route", "add", cidr, "via", gateway)
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}
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func deleteRouteVia(cidr, gateway string) error {
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return runCmd("ip", "route", "del", cidr, "via", gateway)
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}
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func defaultGateway() (string, error) {
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out, err := exec.Command("ip", "route", "show", "default").Output()
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if err != nil {
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return "", err
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}
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fields := strings.Fields(strings.TrimSpace(string(out)))
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for i, f := range fields {
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if f == "via" && i+1 < len(fields) {
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return fields[i+1], nil
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}
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}
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return "", fmt.Errorf("no default gateway found")
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}
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func runCmd(name string, args ...string) error {
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cmd := exec.Command(name, args...)
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if out, err := cmd.CombinedOutput(); err != nil {
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return fmt.Errorf("%s %s: %w (%s)", name, strings.Join(args, " "), err, strings.TrimSpace(string(out)))
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}
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return nil
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}
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