75 lines
1.5 KiB
Go
75 lines
1.5 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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)
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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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RunPostUp(conf)
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}
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func RunPostUp(conf *DsnetConfig) {
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ShellOut(conf.PostUp, "PostUp")
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}
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// CreateLink sets up the WG interface and link with the correct
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// address
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func CreateLink(conf *DsnetConfig) {
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if len(conf.IP) == 0 && len(conf.IP6) == 0 {
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ExitFail("No IPv4 or IPv6 network defined in config")
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}
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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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if len(conf.IP) != 0 {
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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 ipv4 addr %s to interface %s", addr.IP, err)
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}
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}
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if len(conf.IP6) != 0 {
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addr6 := &netlink.Addr{
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IPNet: &net.IPNet{
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IP: conf.IP6,
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Mask: conf.Network6.IPNet.Mask,
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},
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}
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err = netlink.AddrAdd(link, addr6)
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if err != nil {
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ExitFail("Could not add ipv6 addr %s to interface %s", addr6.IP, err)
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}
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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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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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