69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
package dsnet
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import (
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"net"
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"github.com/vishvananda/netlink"
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"golang.zx2c4.com/wireguard/wgctrl"
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"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
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)
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func Up() {
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conf := MustLoadDsnetConfig()
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CreateLink(conf)
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ConfigureDevice(conf)
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}
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func CreateLink(conf *DsnetConfig) {
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linkAttrs := netlink.NewLinkAttrs()
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linkAttrs.Name = conf.InterfaceName
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link := &netlink.GenericLink{
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LinkAttrs: linkAttrs,
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LinkType: "wireguard",
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}
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err := netlink.LinkAdd(link)
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if err != nil {
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ExitFail("Could not add interface '%s' (%v)", conf.InterfaceName, err)
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}
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addr := &netlink.Addr{
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IPNet: &net.IPNet{
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IP: conf.IP,
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Mask: conf.Network.IPNet.Mask,
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},
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}
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err = netlink.AddrAdd(link, addr)
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if err != nil {
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ExitFail("Could not add addr %s to interface %s", addr.IP, err)
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}
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// bring up interface (UNKNOWN state instead of UP, a wireguard quirk)
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err = netlink.LinkSetUp(link)
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}
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func ConfigureDevice(conf *DsnetConfig) {
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wgConfig := wgtypes.Config{
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PrivateKey: &conf.PrivateKey.Key,
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ListenPort: &conf.ListenPort,
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ReplacePeers: true,
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Peers: conf.GetWgPeerConfigs(),
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}
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wg, err := wgctrl.New()
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check(err)
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defer wg.Close()
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err = wg.ConfigureDevice(conf.InterfaceName, wgConfig)
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if err != nil {
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ExitFail("Could not configure device '%s' (%v)", conf.InterfaceName, err)
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}
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if err != nil {
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ExitFail("Could not bring up device '%s' (%v)", conf.InterfaceName, err)
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}
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}
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