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62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
package dialer
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import (
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"context"
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"net"
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"net/netip"
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"syscall"
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"github.com/metacubex/mihomo/component/iface"
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"golang.org/x/sys/unix"
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)
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func bindControl(ifaceIdx int) controlFn {
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return func(ctx context.Context, network, address string, c syscall.RawConn) (err error) {
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addrPort, err := netip.ParseAddrPort(address)
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if err == nil && !addrPort.Addr().IsGlobalUnicast() {
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return
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}
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var innerErr error
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err = c.Control(func(fd uintptr) {
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switch network {
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case "tcp6", "udp6", "ip6":
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innerErr = unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_BOUND_IF, ifaceIdx)
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default:
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innerErr = unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_BOUND_IF, ifaceIdx)
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}
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})
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if innerErr != nil {
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err = innerErr
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}
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return
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}
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}
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func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, _ string, _ netip.Addr) error {
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ifaceObj, err := iface.ResolveInterface(ifaceName)
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if err != nil {
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return err
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}
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addControlToDialer(dialer, bindControl(ifaceObj.Index))
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return nil
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}
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func bindIfaceToListenConfig(ifaceName string, lc *net.ListenConfig, _, address string, rAddrPort netip.AddrPort) (string, error) {
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ifaceObj, err := iface.ResolveInterface(ifaceName)
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if err != nil {
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return "", err
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}
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addControlToListenConfig(lc, bindControl(ifaceObj.Index))
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return address, nil
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}
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func ParseNetwork(network string, addr netip.Addr) string {
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return network
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}
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