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fix: auto-route priority wlan0 in Android

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This commit is contained in:
gVisor bot 2022-04-30 14:56:40 +08:00
parent e2c75161b1
commit 2b4b759f63
3 changed files with 89 additions and 30 deletions
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2
listener/listener.go
View file

@ -398,7 +398,7 @@ func Cleanup() {
if tunStackListener != nil {
_ = tunStackListener.Close()
if runtime.GOOS == "android" {
prefs := []int{9000, 9001, 9002, 9003}
prefs := []int{9000, 9001, 9002, 9003, 9004}
for _, pref := range prefs {
_, _ = cmd.ExecCmd(fmt.Sprintf("ip rule del pref %d", pref))
}

83
listener/tun/ipstack/commons/router_android.go Normal file
View file

@ -0,0 +1,83 @@
package commons
import (
"fmt"
"github.com/Dreamacro/clash/common/cmd"
"github.com/Dreamacro/clash/listener/tun/device"
"github.com/Dreamacro/clash/log"
"net/netip"
"strconv"
"strings"
)
func GetAutoDetectInterface() (string, error) {
res, err := cmd.ExecCmd("sh -c ip route | awk '{print $3}' | xargs echo -n")
if err != nil {
return "", err
}
ifaces := strings.Split(res, " ")
for _, iface := range ifaces {
if iface == "wlan0" {
return "wlan0", nil
}
}
return ifaces[0], nil
}
func ConfigInterfaceAddress(dev device.Device, addr netip.Prefix, forceMTU int, autoRoute, autoDetectInterface bool) error {
var (
interfaceName = dev.Name()
ip = addr.Masked().Addr().Next()
)
_, err := cmd.ExecCmd(fmt.Sprintf("ip addr add %s dev %s", ip.String(), interfaceName))
if err != nil {
return err
}
_, err = cmd.ExecCmd(fmt.Sprintf("ip link set %s up", interfaceName))
if err != nil {
return err
}
if autoRoute {
err = configInterfaceRouting(interfaceName, addr, autoDetectInterface)
}
return err
}
func configInterfaceRouting(interfaceName string, addr netip.Prefix, autoDetectInterface bool) error {
linkIP := addr.Masked().Addr().Next()
const tableId = 1981801
for _, route := range defaultRoutes {
if err := execRouterCmd("add", route, interfaceName, linkIP.String(), strconv.Itoa(tableId)); err != nil {
return err
}
}
execAddRuleCmd(fmt.Sprintf("lookup main pref 9000"))
execAddRuleCmd(fmt.Sprintf("from 0.0.0.0 iif lo uidrange 0-4294967294 lookup %d pref 9001", tableId))
execAddRuleCmd(fmt.Sprintf("from %s iif lo uidrange 0-4294967294 lookup %d pref 9002", linkIP, tableId))
execAddRuleCmd(fmt.Sprintf("from all iif %s lookup main suppress_prefixlength 0 pref 9003", interfaceName))
execAddRuleCmd(fmt.Sprintf("not from all iif lo lookup %d pref 9004", tableId))
if autoDetectInterface {
go DefaultInterfaceChangeMonitor()
}
return nil
}
func execAddRuleCmd(rule string) {
_, err := cmd.ExecCmd("ip rule add " + rule)
if err != nil {
log.Warnln("%s", err)
}
}
func execRouterCmd(action, route, interfaceName, linkIP, table string) error {
cmdStr := fmt.Sprintf("ip route %s %s dev %s proto kernel scope link src %s table %s", action, route, interfaceName, linkIP, table)
_, err := cmd.ExecCmd(cmdStr)
return err
}

34
listener/tun/ipstack/commons/router_linux.go
View file

@ -1,19 +1,15 @@
//go:build !android
package commons
import (
"fmt"
"github.com/Dreamacro/clash/common/cmd"
"github.com/Dreamacro/clash/listener/tun/device"
"github.com/Dreamacro/clash/log"
"net/netip"
"runtime"
"strconv"
)
func GetAutoDetectInterface() (string, error) {
if runtime.GOOS == "android" {
return cmd.ExecCmd("sh -c ip route | awk 'NR==1{print $3}' | xargs echo -n")
}
return cmd.ExecCmd("bash -c ip route show | grep 'default via' | awk -F ' ' 'NR==1{print $5}' | xargs echo -n")
}
@ -41,23 +37,10 @@ func ConfigInterfaceAddress(dev device.Device, addr netip.Prefix, forceMTU int,
func configInterfaceRouting(interfaceName string, addr netip.Prefix, autoDetectInterface bool) error {
linkIP := addr.Masked().Addr().Next()
if runtime.GOOS == "android" {
const tableId = 1981801
for _, route := range defaultRoutes {
if err := execRouterCmd("add", route, interfaceName, linkIP.String(), strconv.Itoa(tableId)); err != nil {
return err
}
}
execAddRuleCmd(fmt.Sprintf("from 0.0.0.0 iif lo uidrange 0-4294967294 lookup %d pref 9000", tableId))
execAddRuleCmd(fmt.Sprintf("from %s iif lo uidrange 0-4294967294 lookup %d pref 9001", linkIP, tableId))
execAddRuleCmd(fmt.Sprintf("from all iif %s lookup main suppress_prefixlength 0 pref 9002", interfaceName))
execAddRuleCmd(fmt.Sprintf("not from all iif lo lookup %d pref 9003", tableId))
} else {
for _, route := range defaultRoutes {
if err := execRouterCmd("add", route, interfaceName, linkIP.String(), "main"); err != nil {
return err
}
for _, route := range defaultRoutes {
if err := execRouterCmd("add", route, interfaceName, linkIP.String(), "main"); err != nil {
return err
}
}
@ -68,13 +51,6 @@ func configInterfaceRouting(interfaceName string, addr netip.Prefix, autoDetectI
return nil
}
func execAddRuleCmd(rule string) {
_, err := cmd.ExecCmd("ip rule add " + rule)
if err != nil {
log.Warnln("%s", err)
}
}
func execRouterCmd(action, route, interfaceName, linkIP, table string) error {
cmdStr := fmt.Sprintf("ip route %s %s dev %s proto kernel scope link src %s table %s", action, route, interfaceName, linkIP, table)