[Style] Adjust the routing table of tun on mac
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parent
75b5f633cd
commit
16abba385a
1 changed files with 37 additions and 11 deletions
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@ -5,11 +5,13 @@ package dev
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import (
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import (
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"bytes"
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"bytes"
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"errors"
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"fmt"
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"fmt"
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"github.com/Dreamacro/clash/log"
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"net"
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"net"
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"os"
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"os"
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"os/exec"
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"os/exec"
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"regexp"
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"strings"
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"sync"
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"sync"
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"syscall"
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"syscall"
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"unsafe"
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"unsafe"
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@ -176,7 +178,7 @@ func OpenTunDevice(tunAddress string, autoRoute bool) (TunDevice, error) {
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}
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}
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if autoRoute {
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if autoRoute {
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SetLinuxAutoRoute()
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setAutoRoute(tunAddress)
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}
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}
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return tun, nil
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return tun, nil
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@ -480,15 +482,39 @@ func (t *tunDarwin) attachLinkLocal() error {
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// GetAutoDetectInterface get ethernet interface
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// GetAutoDetectInterface get ethernet interface
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func GetAutoDetectInterface() (string, error) {
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func GetAutoDetectInterface() (string, error) {
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cmd := exec.Command("bash", "-c", "netstat -rnf inet | grep 'default' | awk -F ' ' 'NR==1{print $6}' | xargs echo -n")
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cmd := exec.Command("route", "-n", "get", "default")
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var out bytes.Buffer
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if result, err := cmd.Output(); err != nil {
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cmd.Stdout = &out
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err := cmd.Run()
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if err != nil {
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return "", err
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return "", err
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} else {
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resultString := string(result)
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reg, err := regexp.Compile("(interface:)(.*)")
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if err != nil {
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return "", err
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}
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matchResult := reg.FindStringSubmatch(resultString)
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interfaceName := strings.TrimSpace(matchResult[len(matchResult)-1])
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return interfaceName, nil
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}
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}
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func setAutoRoute(tunGateway string) {
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addRoute("1", tunGateway)
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addRoute("2/7", tunGateway)
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addRoute("4/6", tunGateway)
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addRoute("8/5", tunGateway)
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addRoute("16/4", tunGateway)
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addRoute("32/3", tunGateway)
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addRoute("64/2", tunGateway)
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addRoute("128.0/1", tunGateway)
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addRoute("198.18.0/16", tunGateway)
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}
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func addRoute(net, name string) {
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cmd := exec.Command("route", "add", "-net", net, name)
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var stderr bytes.Buffer
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cmd.Stderr = &stderr
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if err := cmd.Run(); err != nil {
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log.Errorln("[auto route] Failed to add system route: %s: %s , cmd: %s", err.Error(), stderr.String(), cmd.String())
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}
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}
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if out.Len() == 0 {
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return "", errors.New("interface not found by default route")
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}
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return out.String(), nil
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}
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}
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