82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
package libnetwork
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import (
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"fmt"
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"net"
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"github.com/vishvananda/netlink"
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)
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func configureInterface(iface netlink.Link, settings *Interface) error {
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ifaceName := iface.Attrs().Name
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ifaceConfigurators := []struct {
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Fn func(netlink.Link, *Interface) error
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ErrMessage string
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}{
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{setInterfaceName, fmt.Sprintf("error renaming interface %q to %q", ifaceName, settings.DstName)},
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{setInterfaceIP, fmt.Sprintf("error setting interface %q IP to %q", ifaceName, settings.Address)},
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{setInterfaceIPv6, fmt.Sprintf("error setting interface %q IPv6 to %q", ifaceName, settings.AddressIPv6)},
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{setInterfaceGateway, fmt.Sprintf("error setting interface %q gateway to %q", ifaceName, settings.Gateway)},
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{setInterfaceGatewayIPv6, fmt.Sprintf("error setting interface %q IPv6 gateway to %q", ifaceName, settings.GatewayIPv6)},
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}
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for _, config := range ifaceConfigurators {
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if err := config.Fn(iface, settings); err != nil {
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return fmt.Errorf("%s: %v", config.ErrMessage, err)
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}
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}
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return nil
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}
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func setGatewayIP(iface netlink.Link, ip net.IP) error {
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return netlink.RouteAdd(&netlink.Route{
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LinkIndex: iface.Attrs().Index,
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Scope: netlink.SCOPE_UNIVERSE,
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Gw: ip,
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})
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}
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func setInterfaceGateway(iface netlink.Link, settings *Interface) error {
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ip := net.ParseIP(settings.Gateway)
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if ip == nil {
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return fmt.Errorf("bad address format %q", settings.Gateway)
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}
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return setGatewayIP(iface, ip)
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}
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func setInterfaceGatewayIPv6(iface netlink.Link, settings *Interface) error {
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if settings.GatewayIPv6 != "" {
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return nil
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}
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ip := net.ParseIP(settings.GatewayIPv6)
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if ip == nil {
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return fmt.Errorf("bad address format %q", settings.GatewayIPv6)
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}
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return setGatewayIP(iface, ip)
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}
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func setInterfaceIP(iface netlink.Link, settings *Interface) (err error) {
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var ipAddr *netlink.Addr
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if ipAddr, err = netlink.ParseAddr(settings.Address); err == nil {
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err = netlink.AddrAdd(iface, ipAddr)
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}
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return err
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}
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func setInterfaceIPv6(iface netlink.Link, settings *Interface) (err error) {
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if settings.AddressIPv6 != "" {
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return nil
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}
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var ipAddr *netlink.Addr
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if ipAddr, err = netlink.ParseAddr(settings.AddressIPv6); err == nil {
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err = netlink.AddrAdd(iface, ipAddr)
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}
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return err
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}
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func setInterfaceName(iface netlink.Link, settings *Interface) error {
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return netlink.LinkSetName(iface, settings.DstName)
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}
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