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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package services | ||
|
|
||
| import ( | ||
| "github.com/coreos/go-iptables/iptables" | ||
| "github.com/pkg/errors" | ||
| "github.com/sirupsen/logrus" | ||
| "github.com/vishvananda/netlink" | ||
| ) | ||
|
|
||
| func ConfigureRouting(wgIface string) error { | ||
| // Networking configuration (ip links and route tables) | ||
| // to ensure that network traffic in the VPN subnet | ||
| // moves through the wireguard interface | ||
| link, err := netlink.LinkByName(wgIface) | ||
| if err != nil { | ||
| return errors.Wrap(err, "failed to find wireguard interface") | ||
| } | ||
| addr, err := netlink.ParseAddr("10.0.0.1/24") | ||
| if err != nil { | ||
| return errors.Wrap(err, "failed to parse subnet address") | ||
| } | ||
| if err := netlink.AddrAdd(link, addr); err != nil { | ||
| logrus.Warn(errors.Wrap(err, "failed to add subnet to wireguard interface")) | ||
| } | ||
| if err := netlink.LinkSetUp(link); err != nil { | ||
| logrus.Warn(errors.Wrap(err, "failed to bring wireguard interface up")) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func ConfigureForwarding(wgIface string, gatewayIface string) error { | ||
| // Networking configuration (iptables) configuration | ||
| // to ensure that traffic from clients the wireguard interface | ||
| // is sent to the provided network interface | ||
| ipt, err := iptables.New() | ||
| if err != nil { | ||
| return errors.Wrap(err, "failed to init iptables") | ||
| } | ||
| if err := ipt.AppendUnique("filter", "FORWARD", "-s", "10.0.0.1/24", "-o", wgIface, "-j", "ACCEPT"); err != nil { | ||
| return errors.Wrap(err, "failed to set ip tables rule") | ||
| } | ||
| if err := ipt.AppendUnique("filter", "FORWARD", "-s", "10.0.0.1/24", "-i", wgIface, "-j", "ACCEPT"); err != nil { | ||
| return errors.Wrap(err, "failed to set ip tables rule") | ||
| } | ||
| if err := ipt.AppendUnique("nat", "POSTROUTING", "-s", "10.0.0.1/24", "-o", gatewayIface, "-j", "MASQUERADE"); err != nil { | ||
| return errors.Wrap(err, "failed to set ip tables rule") | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| package services | ||
|
|
||
| import ( | ||
| "os/exec" | ||
|
|
||
| "github.com/pkg/errors" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| func ExecUserWireGuard(wgcommand string, ifaceName string) error { | ||
| logrus.Infof("using userspace wireguard implementation %s", wgcommand) | ||
|
|
||
| // create the command to exec | ||
| // if it's "boringtun" we'll provide some non-standard | ||
| // flags to better support running within a docker container | ||
| var cmd *exec.Cmd | ||
| if wgcommand == "boringtun" { | ||
| cmd = exec.Command( | ||
| wgcommand, | ||
| ifaceName, | ||
| "--disable-drop-privileges=root", | ||
| "--foreground", | ||
| ) | ||
| } else { | ||
| cmd = exec.Command( | ||
| wgcommand, | ||
| "-f", | ||
| ifaceName, | ||
| ) | ||
| } | ||
|
|
||
| entry := logrus.NewEntry(logrus.New()).WithField("process", wgcommand) | ||
| cmd.Stdout = entry.Writer() | ||
| cmd.Stderr = entry.Writer() | ||
| logrus.Infof("starting %s", cmd.String()) | ||
| if err := cmd.Run(); err != nil { | ||
| return errors.Wrap(err, "userspace wireguard exitted") | ||
| } | ||
|
|
||
| return nil | ||
| } |
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