55 lines
1.1 KiB
Go
55 lines
1.1 KiB
Go
package route
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import (
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"net"
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"github.com/sagernet/sing/common/control"
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)
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var _ control.InterfaceFinder = (*myInterfaceFinder)(nil)
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type myInterfaceFinder struct {
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interfaces []net.Interface
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}
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func (f *myInterfaceFinder) update() error {
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ifs, err := net.Interfaces()
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if err != nil {
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return err
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}
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f.interfaces = ifs
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return nil
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}
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func (f *myInterfaceFinder) updateInterfaces(interfaces []net.Interface) {
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f.interfaces = interfaces
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}
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func (f *myInterfaceFinder) InterfaceIndexByName(name string) (interfaceIndex int, err error) {
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for _, netInterface := range f.interfaces {
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if netInterface.Name == name {
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return netInterface.Index, nil
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}
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}
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netInterface, err := net.InterfaceByName(name)
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if err != nil {
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return
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}
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f.update()
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return netInterface.Index, nil
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}
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func (f *myInterfaceFinder) InterfaceNameByIndex(index int) (interfaceName string, err error) {
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for _, netInterface := range f.interfaces {
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if netInterface.Index == index {
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return netInterface.Name, nil
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}
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}
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netInterface, err := net.InterfaceByIndex(index)
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if err != nil {
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return
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}
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f.update()
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return netInterface.Name, nil
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}
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