version: bump snapshot

Keeping it on makes IPv6 problematic and confuses routing daemons.

Gopkg.lock

@@ -11,7 +11,7 @@
     "internal/chacha20",
     "poly1305"
   ]
-  revision = "1a580b3eff7814fc9b40602fd35256c63b50f491"
+  revision = "ab813273cd59e1333f7ae7bff5d027d4aadf528c"
 
 [[projects]]
   branch = "master"
@@ -23,7 +23,7 @@
     "ipv4",
     "ipv6"
   ]
-  revision = "9ef9f5bb98a1fdc41f8cf6c250a4404b4085e389"
+  revision = "dfa909b99c79129e1100513e5cd36307665e5723"
 
 [[projects]]
   branch = "master"
@@ -32,7 +32,7 @@
     "cpu",
     "unix"
   ]
-  revision = "88eb85aaee56831ad49eaf7aa80d73de9814cde2"
+  revision = "c11f84a56e43e20a78cee75a7c034031ecf57d1f"
 
 [solve-meta]
   analyzer-name = "dep"

Makefile

@@ -5,8 +5,6 @@ BINDIR ?= $(PREFIX)/bin
 ifeq ($(shell go env GOOS),linux)
 ifeq ($(wildcard .git),)
 $(error Do not build this for Linux. Instead use the Linux kernel module. See wireguard.com/install/ for more info.)
-else
-$(shell printf 'package main\nconst UseTheKernelModuleInstead = 0xdeadbabe\n' > ireallywantobuildon_linux.go)
 endif
 endif
 
@@ -36,7 +34,7 @@ vendor/.created: Gopkg.toml Gopkg.lock | .gopath/.created
 	touch $@
 
 wireguard-go: $(wildcard *.go) $(wildcard */*.go) .gopath/.created vendor/.created version.go
-	go build $(GO_BUILD_EXTRA_ARGS) -v $(GO_IMPORT_PATH)
+	go build -v $(GO_IMPORT_PATH)
 
 install: wireguard-go
 	@install -v -d "$(DESTDIR)$(BINDIR)" && install -v -m 0755 wireguard-go "$(DESTDIR)$(BINDIR)/wireguard-go"

conn_linux.go

@@ -18,8 +18,8 @@
 package main
 
 import (
-	"git.zx2c4.com/wireguard-go/rwcancel"
 	"errors"
+	"git.zx2c4.com/wireguard-go/rwcancel"
 	"golang.org/x/sys/unix"
 	"net"
 	"strconv"
@@ -563,7 +563,7 @@ func (bind *NativeBind) routineRouteListener(device *Device) {
 		var msgn int
 		for {
 			msgn, _, _, _, err = unix.Recvmsg(bind.netlinkSock, msg[:], nil, 0)
-			if err == nil || !rwcancel.ErrorIsEAGAIN(err) {
+			if err == nil || !rwcancel.RetryAfterError(err) {
 				break
 			}
 			if !bind.netlinkCancel.ReadyRead() {

cookie.go

@@ -7,9 +7,9 @@
 package main
 
 import (
-	"git.zx2c4.com/wireguard-go/xchacha20poly1305"
 	"crypto/hmac"
 	"crypto/rand"
+	"git.zx2c4.com/wireguard-go/xchacha20poly1305"
 	"golang.org/x/crypto/blake2s"
 	"golang.org/x/crypto/chacha20poly1305"
 	"sync"

helper_test.go

@@ -9,6 +9,7 @@ package main
 import (
 	"bytes"
 	"errors"
+	"git.zx2c4.com/wireguard-go/tun"
 	"os"
 	"testing"
 )
@@ -20,7 +21,7 @@ type DummyTUN struct {
 	name    string
 	mtu     int
 	packets chan []byte
-	events  chan TUNEvent
+	events  chan tun.TUNEvent
 }
 
 func (tun *DummyTUN) File() *os.File {
@@ -46,7 +47,7 @@ func (tun *DummyTUN) Close() error {
 	return nil
 }
 
-func (tun *DummyTUN) Events() chan TUNEvent {
+func (tun *DummyTUN) Events() chan tun.TUNEvent {
 	return tun.events
 }
 
@@ -59,11 +60,11 @@ func (tun *DummyTUN) Read(d []byte, offset int) (int, error) {
 	return len(t), nil
 }
 
-func CreateDummyTUN(name string) (TUNDevice, error) {
+func CreateDummyTUN(name string) (tun.TUNDevice, error) {
 	var dummy DummyTUN
 	dummy.mtu = 0
 	dummy.packets = make(chan []byte, 100)
-	dummy.events = make(chan TUNEvent, 10)
+	dummy.events = make(chan tun.TUNEvent, 10)
 	return &dummy, nil
 }
 

keypair.go

@@ -7,8 +7,8 @@
 package main
 
 import (
-	"git.zx2c4.com/wireguard-go/replay"
 	"crypto/cipher"
+	"git.zx2c4.com/wireguard-go/replay"
 	"sync"
 	"time"
 )

main.go

@@ -7,8 +7,8 @@
 package main
 
 import (
-	"git.zx2c4.com/wireguard-go/tun"
 	"fmt"
+	"git.zx2c4.com/wireguard-go/tun"
 	"os"
 	"os/signal"
 	"runtime"
@@ -160,6 +160,8 @@ func main() {
 		fmt.Sprintf("(%s) ", interfaceName),
 	)
 
+	logger.Info.Println("Starting wireguard-go version", WireGuardGoVersion)
+
 	logger.Debug.Println("Debug log enabled")
 
 	if err != nil {

noise-protocol.go

@@ -7,8 +7,8 @@
 package main
 
 import (
-	"git.zx2c4.com/wireguard-go/tai64n"
 	"errors"
+	"git.zx2c4.com/wireguard-go/tai64n"
 	"golang.org/x/crypto/blake2s"
 	"golang.org/x/crypto/chacha20poly1305"
 	"golang.org/x/crypto/poly1305"

peer.go

@@ -258,3 +258,14 @@ func (peer *Peer) Stop() {
 
 	peer.ZeroAndFlushAll()
 }
+
+var roamingDisabled bool
+
+func (peer *Peer) SetEndpointFromPacket(endpoint Endpoint) {
+	if roamingDisabled {
+		return
+	}
+	peer.mutex.Lock()
+	peer.endpoint = endpoint
+	peer.mutex.Unlock()
+}

receive.go

@@ -440,10 +440,7 @@ func (device *Device) RoutineHandshake() {
 			peer.timersAnyAuthenticatedPacketReceived()
 
 			// update endpoint
-
-			peer.mutex.Lock()
-			peer.endpoint = elem.endpoint
-			peer.mutex.Unlock()
+			peer.SetEndpointFromPacket(elem.endpoint)
 
 			logDebug.Println(peer, "- Received handshake initiation")
 
@@ -473,10 +470,7 @@ func (device *Device) RoutineHandshake() {
 			}
 
 			// update endpoint
-
-			peer.mutex.Lock()
-			peer.endpoint = elem.endpoint
-			peer.mutex.Unlock()
+			peer.SetEndpointFromPacket(elem.endpoint)
 
 			logDebug.Println(peer, "- Received handshake response")
 
@@ -549,10 +543,7 @@ func (peer *Peer) RoutineSequentialReceiver() {
 			}
 
 			// update endpoint
-
-			peer.mutex.Lock()
-			peer.endpoint = elem.endpoint
-			peer.mutex.Unlock()
+			peer.SetEndpointFromPacket(elem.endpoint)
 
 			// check if using new keypair
 			if peer.ReceivedWithKeypair(elem.keypair) {

rwcancel/rwcancel.go

@@ -40,15 +40,16 @@ func NewRWCancel(fd int) (*RWCancel, error) {
 	return &rwcancel, nil
 }
 
-/* https://golang.org/src/crypto/rand/eagain.go */
-func ErrorIsEAGAIN(err error) bool {
+func RetryAfterError(err error) bool {
 	if pe, ok := err.(*os.PathError); ok {
-		if errno, ok := pe.Err.(syscall.Errno); ok && errno == syscall.EAGAIN {
+		err = pe.Err
+	}
+	if errno, ok := err.(syscall.Errno); ok {
+		switch errno {
+		case syscall.EAGAIN, syscall.EINTR:
 			return true
 		}
-	}
-	if errno, ok := err.(syscall.Errno); ok && errno == syscall.EAGAIN {
-		return true
+
 	}
 	return false
 }
@@ -86,7 +87,7 @@ func (rw *RWCancel) ReadyWrite() bool {
 func (rw *RWCancel) Read(p []byte) (n int, err error) {
 	for {
 		n, err := unix.Read(rw.fd, p)
-		if err == nil || !ErrorIsEAGAIN(err) {
+		if err == nil || !RetryAfterError(err) {
 			return n, err
 		}
 		if !rw.ReadyRead() {
@@ -98,7 +99,7 @@ func (rw *RWCancel) Read(p []byte) (n int, err error) {
 func (rw *RWCancel) Write(p []byte) (n int, err error) {
 	for {
 		n, err := unix.Write(rw.fd, p)
-		if err == nil || !ErrorIsEAGAIN(err) {
+		if err == nil || !RetryAfterError(err) {
 			return n, err
 		}
 		if !rw.ReadyWrite() {

timers.go

@@ -134,7 +134,7 @@ func expiredNewHandshake(peer *Peer) {
 }
 
 func expiredZeroKeyMaterial(peer *Peer) {
-	peer.device.log.Debug.Printf(":%s Removing all keys, since we haven't received a new one in %d seconds\n", peer, int((RejectAfterTime * 3).Seconds()))
+	peer.device.log.Debug.Printf("%s: Removing all keys, since we haven't received a new one in %d seconds\n", peer, int((RejectAfterTime * 3).Seconds()))
 	peer.ZeroAndFlushAll()
 }
 

tun/tun_darwin.go

@@ -7,14 +7,15 @@
 package tun
 
 import (
-	"git.zx2c4.com/wireguard-go/rwcancel"
 	"errors"
 	"fmt"
+	"git.zx2c4.com/wireguard-go/rwcancel"
 	"golang.org/x/net/ipv6"
 	"golang.org/x/sys/unix"
 	"io/ioutil"
 	"net"
 	"os"
+	"syscall"
 	"unsafe"
 )
 
@@ -54,8 +55,12 @@ func (tun *nativeTun) routineRouteListener(tunIfindex int) {
 
 	data := make([]byte, os.Getpagesize())
 	for {
+	retry:
 		n, err := unix.Read(tun.routeSocket, data)
 		if err != nil {
+			if errno, ok := err.(syscall.Errno); ok && errno == syscall.EINTR {
+				goto retry
+			}
 			tun.errors <- err
 			return
 		}
@@ -259,7 +264,7 @@ func (tun *nativeTun) doRead(buff []byte, offset int) (int, error) {
 func (tun *nativeTun) Read(buff []byte, offset int) (int, error) {
 	for {
 		n, err := tun.doRead(buff, offset)
-		if err == nil || !rwcancel.ErrorIsEAGAIN(err) {
+		if err == nil || !rwcancel.RetryAfterError(err) {
 			return n, err
 		}
 		if !tun.rwcancel.ReadyRead() {

tun/tun_freebsd.go

@@ -6,14 +6,15 @@
 package tun
 
 import (
-	"git.zx2c4.com/wireguard-go/rwcancel"
 	"bytes"
 	"errors"
 	"fmt"
+	"git.zx2c4.com/wireguard-go/rwcancel"
 	"golang.org/x/net/ipv6"
 	"golang.org/x/sys/unix"
 	"net"
 	"os"
+	"syscall"
 	"unsafe"
 )
 
@@ -67,8 +68,12 @@ func (tun *nativeTun) routineRouteListener(tunIfindex int) {
 
 	data := make([]byte, os.Getpagesize())
 	for {
+	retry:
 		n, err := unix.Read(tun.routeSocket, data)
 		if err != nil {
+			if errno, ok := err.(syscall.Errno); ok && errno == syscall.EINTR {
+				goto retry
+			}
 			tun.errors <- err
 			return
 		}
@@ -257,19 +262,6 @@ func CreateTUN(name string, mtu int) (TUNDevice, error) {
 		return nil, fmt.Errorf("error %s", errno.Error())
 	}
 
-	// Set TUN iface to broadcast mode. TUN inferfaces on freebsd come up in point to point by default
-	ifmodemode := unix.IFF_BROADCAST
-	_, _, errno = unix.Syscall(
-		unix.SYS_IOCTL,
-		uintptr(tunfd),
-		uintptr(_TUNSIFMODE),
-		uintptr(unsafe.Pointer(&ifmodemode)),
-	)
-
-	if errno != 0 {
-		return nil, fmt.Errorf("error %s", errno.Error())
-	}
-
 	// Rename tun interface
 
 	// Open control socket
@@ -392,7 +384,7 @@ func (tun *nativeTun) doRead(buff []byte, offset int) (int, error) {
 func (tun *nativeTun) Read(buff []byte, offset int) (int, error) {
 	for {
 		n, err := tun.doRead(buff, offset)
-		if err == nil || !rwcancel.ErrorIsEAGAIN(err) {
+		if err == nil || !rwcancel.RetryAfterError(err) {
 			return n, err
 		}
 		if !tun.rwcancel.ReadyRead() {

tun/tun_linux.go

@@ -12,10 +12,10 @@ package tun
  */
 
 import (
-	"git.zx2c4.com/wireguard-go/rwcancel"
 	"bytes"
 	"errors"
 	"fmt"
+	"git.zx2c4.com/wireguard-go/rwcancel"
 	"golang.org/x/net/ipv6"
 	"golang.org/x/sys/unix"
 	"net"
@@ -102,7 +102,7 @@ func (tun *nativeTun) routineNetlinkListener() {
 		var msgn int
 		for {
 			msgn, _, _, _, err = unix.Recvmsg(tun.netlinkSock, msg[:], nil, 0)
-			if err == nil || !rwcancel.ErrorIsEAGAIN(err) {
+			if err == nil || !rwcancel.RetryAfterError(err) {
 				break
 			}
 			if !tun.netlinkCancel.ReadyRead() {
@@ -334,7 +334,7 @@ func (tun *nativeTun) doRead(buff []byte, offset int) (int, error) {
 func (tun *nativeTun) Read(buff []byte, offset int) (int, error) {
 	for {
 		n, err := tun.doRead(buff, offset)
-		if err == nil || !rwcancel.ErrorIsEAGAIN(err) {
+		if err == nil || !rwcancel.RetryAfterError(err) {
 			return n, err
 		}
 		if !tun.fdCancel.ReadyRead() {

tun/tun_openbsd.go

@@ -6,9 +6,9 @@
 package tun
 
 import (
-	"git.zx2c4.com/wireguard-go/rwcancel"
 	"errors"
 	"fmt"
+	"git.zx2c4.com/wireguard-go/rwcancel"
 	"golang.org/x/net/ipv6"
 	"golang.org/x/sys/unix"
 	"io/ioutil"
@@ -46,8 +46,12 @@ func (tun *nativeTun) routineRouteListener(tunIfindex int) {
 
 	data := make([]byte, os.Getpagesize())
 	for {
+	retry:
 		n, err := unix.Read(tun.routeSocket, data)
 		if err != nil {
+			if errno, ok := err.(syscall.Errno); ok && errno == syscall.EINTR {
+				goto retry
+			}
 			tun.errors <- err
 			return
 		}
@@ -90,9 +94,7 @@ func (tun *nativeTun) routineRouteListener(tunIfindex int) {
 
 func errorIsEBUSY(err error) bool {
 	if pe, ok := err.(*os.PathError); ok {
-		if errno, ok := pe.Err.(syscall.Errno); ok && errno == syscall.EBUSY {
-			return true
-		}
+		err = pe.Err
 	}
 	if errno, ok := err.(syscall.Errno); ok && errno == syscall.EBUSY {
 		return true
@@ -127,19 +129,6 @@ func CreateTUN(name string, mtu int) (TUNDevice, error) {
 		return nil, err
 	}
 
-	// Set TUN iface to broadcast mode
-	ifmodemode := unix.IFF_BROADCAST
-	_, _, errno := unix.Syscall(
-		unix.SYS_IOCTL,
-		uintptr(tunfile.Fd()),
-		uintptr(_TUNSIFMODE),
-		uintptr(unsafe.Pointer(&ifmodemode)),
-	)
-
-	if errno != 0 {
-		return nil, fmt.Errorf("error %s", errno.Error())
-	}
-
 	tun, err := CreateTUNFromFile(tunfile, mtu)
 
 	if err == nil && name == "tun" {
@@ -237,7 +226,7 @@ func (tun *nativeTun) doRead(buff []byte, offset int) (int, error) {
 func (tun *nativeTun) Read(buff []byte, offset int) (int, error) {
 	for {
 		n, err := tun.doRead(buff, offset)
-		if err == nil || !rwcancel.ErrorIsEAGAIN(err) {
+		if err == nil || !rwcancel.RetryAfterError(err) {
 			return n, err
 		}
 		if !tun.rwcancel.ReadyRead() {

uapi_linux.go

@@ -7,9 +7,9 @@
 package main
 
 import (
-	"git.zx2c4.com/wireguard-go/rwcancel"
 	"errors"
 	"fmt"
+	"git.zx2c4.com/wireguard-go/rwcancel"
 	"golang.org/x/sys/unix"
 	"net"
 	"os"

version.go

@@ -1,2 +1,2 @@
 package main
-const WireGuardGoVersion = "0.0.20180524"
+const WireGuardGoVersion = "0.0.20180531"