Mobile (#735)

Initial modification to support mobile client

Export necessary interfaces for Android framework

iface/iface_linux.go

@@ -1,144 +0,0 @@
-package iface
-
-import (
-	"fmt"
-	"os"
-
-	log "github.com/sirupsen/logrus"
-	"github.com/vishvananda/netlink"
-)
-
-// Create creates a new Wireguard interface, sets a given IP and brings it up.
-// Will reuse an existing one.
-func (w *WGIface) Create() error {
-	w.mu.Lock()
-	defer w.mu.Unlock()
-
-	if WireguardModuleIsLoaded() {
-		log.Info("using kernel WireGuard")
-		return w.createWithKernel()
-	} else {
-		if !tunModuleIsLoaded() {
-			return fmt.Errorf("couldn't check or load tun module")
-		}
-		log.Info("using userspace WireGuard")
-		return w.createWithUserspace()
-	}
-}
-
-// createWithKernel Creates a new Wireguard interface using kernel Wireguard module.
-// Works for Linux and offers much better network performance
-func (w *WGIface) createWithKernel() error {
-
-	link := newWGLink(w.name)
-
-	// check if interface exists
-	l, err := netlink.LinkByName(w.name)
-	if err != nil {
-		switch err.(type) {
-		case netlink.LinkNotFoundError:
-			break
-		default:
-			return err
-		}
-	}
-
-	// remove if interface exists
-	if l != nil {
-		err = netlink.LinkDel(link)
-		if err != nil {
-			return err
-		}
-	}
-
-	log.Debugf("adding device: %s", w.name)
-	err = netlink.LinkAdd(link)
-	if os.IsExist(err) {
-		log.Infof("interface %s already exists. Will reuse.", w.name)
-	} else if err != nil {
-		return err
-	}
-
-	w.netInterface = link
-
-	err = w.assignAddr()
-	if err != nil {
-		return err
-	}
-
-	// todo do a discovery
-	log.Debugf("setting MTU: %d interface: %s", w.mtu, w.name)
-	err = netlink.LinkSetMTU(link, w.mtu)
-	if err != nil {
-		log.Errorf("error setting MTU on interface: %s", w.name)
-		return err
-	}
-
-	log.Debugf("bringing up interface: %s", w.name)
-	err = netlink.LinkSetUp(link)
-	if err != nil {
-		log.Errorf("error bringing up interface: %s", w.name)
-		return err
-	}
-
-	return nil
-}
-
-// assignAddr Adds IP address to the tunnel interface
-func (w *WGIface) assignAddr() error {
-	link := newWGLink(w.name)
-
-	//delete existing addresses
-	list, err := netlink.AddrList(link, 0)
-	if err != nil {
-		return err
-	}
-	if len(list) > 0 {
-		for _, a := range list {
-			err = netlink.AddrDel(link, &a)
-			if err != nil {
-				return err
-			}
-		}
-	}
-
-	log.Debugf("adding address %s to interface: %s", w.address.String(), w.name)
-	addr, _ := netlink.ParseAddr(w.address.String())
-	err = netlink.AddrAdd(link, addr)
-	if os.IsExist(err) {
-		log.Infof("interface %s already has the address: %s", w.name, w.address.String())
-	} else if err != nil {
-		return err
-	}
-	// On linux, the link must be brought up
-	err = netlink.LinkSetUp(link)
-	return err
-}
-
-type wgLink struct {
-	attrs *netlink.LinkAttrs
-}
-
-func newWGLink(name string) *wgLink {
-	attrs := netlink.NewLinkAttrs()
-	attrs.Name = name
-
-	return &wgLink{
-		attrs: &attrs,
-	}
-}
-
-// Attrs returns the Wireguard's default attributes
-func (l *wgLink) Attrs() *netlink.LinkAttrs {
-	return l.attrs
-}
-
-// Type returns the interface type
-func (l *wgLink) Type() string {
-	return "wireguard"
-}
-
-// Close deletes the link interface
-func (l *wgLink) Close() error {
-	return netlink.LinkDel(l)
-}