global: apply gofumpt

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

conn/bind_linux.go

@@ -66,8 +66,10 @@ type LinuxSocketBind struct {
 func NewLinuxSocketBind() Bind { return &LinuxSocketBind{sock4: -1, sock6: -1} }
 func NewDefaultBind() Bind     { return NewLinuxSocketBind() }
 
-var _ Endpoint = (*LinuxSocketEndpoint)(nil)
-var _ Bind = (*LinuxSocketBind)(nil)
+var (
+	_ Endpoint = (*LinuxSocketEndpoint)(nil)
+	_ Bind     = (*LinuxSocketBind)(nil)
+)
 
 func (*LinuxSocketBind) ParseEndpoint(s string) (Endpoint, error) {
 	var end LinuxSocketEndpoint
@@ -171,7 +173,6 @@ func (bind *LinuxSocketBind) SetMark(value uint32) error {
 			unix.SO_MARK,
 			int(value),
 		)
-
 		if err != nil {
 			return err
 		}
@@ -184,7 +185,6 @@ func (bind *LinuxSocketBind) SetMark(value uint32) error {
 			unix.SO_MARK,
 			int(value),
 		)
-
 		if err != nil {
 			return err
 		}
@@ -327,7 +327,6 @@ func zoneToUint32(zone string) (uint32, error) {
 }
 
 func create4(port uint16) (int, uint16, error) {
-
 	// create socket
 
 	fd, err := unix.Socket(
@@ -335,7 +334,6 @@ func create4(port uint16) (int, uint16, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return -1, 0, err
 	}
@@ -371,7 +369,6 @@ func create4(port uint16) (int, uint16, error) {
 }
 
 func create6(port uint16) (int, uint16, error) {
-
 	// create socket
 
 	fd, err := unix.Socket(
@@ -379,7 +376,6 @@ func create6(port uint16) (int, uint16, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return -1, 0, err
 	}
@@ -410,7 +406,6 @@ func create6(port uint16) (int, uint16, error) {
 		}
 
 		return unix.Bind(fd, &addr)
-
 	}(); err != nil {
 		unix.Close(fd)
 		return -1, 0, err
@@ -425,7 +420,6 @@ func create6(port uint16) (int, uint16, error) {
 }
 
 func send4(sock int, end *LinuxSocketEndpoint, buff []byte) error {
-
 	// construct message header
 
 	cmsg := struct {
@@ -465,7 +459,6 @@ func send4(sock int, end *LinuxSocketEndpoint, buff []byte) error {
 }
 
 func send6(sock int, end *LinuxSocketEndpoint, buff []byte) error {
-
 	// construct message header
 
 	cmsg := struct {
@@ -509,7 +502,6 @@ func send6(sock int, end *LinuxSocketEndpoint, buff []byte) error {
 }
 
 func receive4(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
-
 	// construct message header
 
 	var cmsg struct {
@@ -518,7 +510,6 @@ func receive4(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
 	}
 
 	size, _, _, newDst, err := unix.Recvmsg(sock, buff, (*[unsafe.Sizeof(cmsg)]byte)(unsafe.Pointer(&cmsg))[:], 0)
-
 	if err != nil {
 		return 0, err
 	}
@@ -541,7 +532,6 @@ func receive4(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
 }
 
 func receive6(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
-
 	// construct message header
 
 	var cmsg struct {
@@ -550,7 +540,6 @@ func receive6(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
 	}
 
 	size, _, _, newDst, err := unix.Recvmsg(sock, buff, (*[unsafe.Sizeof(cmsg)]byte)(unsafe.Pointer(&cmsg))[:], 0)
-
 	if err != nil {
 		return 0, err
 	}

conn/bind_std.go

@@ -30,8 +30,10 @@ func NewStdNetBind() Bind { return &StdNetBind{} }
 
 type StdNetEndpoint net.UDPAddr
 
-var _ Bind = (*StdNetBind)(nil)
-var _ Endpoint = (*StdNetEndpoint)(nil)
+var (
+	_ Bind     = (*StdNetBind)(nil)
+	_ Endpoint = (*StdNetEndpoint)(nil)
+)
 
 func (*StdNetBind) ParseEndpoint(s string) (Endpoint, error) {
 	e, err := netip.ParseAddrPort(s)

conn/bind_windows.go

@@ -91,8 +91,10 @@ type WinRingEndpoint struct {
 	data   [30]byte
 }
 
-var _ Bind = (*WinRingBind)(nil)
-var _ Endpoint = (*WinRingEndpoint)(nil)
+var (
+	_ Bind     = (*WinRingBind)(nil)
+	_ Endpoint = (*WinRingEndpoint)(nil)
+)
 
 func (*WinRingBind) ParseEndpoint(s string) (Endpoint, error) {
 	host, port, err := net.SplitHostPort(s)
@@ -382,7 +384,6 @@ retry:
 		count = winrio.DequeueCompletion(bind.rx.cq, results[:])
 		if count == 0 {
 			return 0, nil, io.ErrNoProgress
-
 		}
 	}
 	bind.rx.Return(1)
@@ -533,6 +534,7 @@ func (bind *StdNetBind) BindSocketToInterface6(interfaceIndex uint32, blackhole
 	bind.blackhole6 = blackhole
 	return nil
 }
+
 func (bind *WinRingBind) BindSocketToInterface4(interfaceIndex uint32, blackhole bool) error {
 	bind.mu.RLock()
 	defer bind.mu.RUnlock()

conn/bindtest/bindtest.go

@@ -25,8 +25,10 @@ type ChannelBind struct {
 
 type ChannelEndpoint uint16
 
-var _ conn.Bind = (*ChannelBind)(nil)
-var _ conn.Endpoint = (*ChannelEndpoint)(nil)
+var (
+	_ conn.Bind     = (*ChannelBind)(nil)
+	_ conn.Endpoint = (*ChannelEndpoint)(nil)
+)
 
 func NewChannelBinds() [2]conn.Bind {
 	arx4 := make(chan []byte, 8192)

conn/winrio/rio_windows.go

@@ -84,8 +84,10 @@ type iocpNotificationCompletion struct {
 	overlapped     *windows.Overlapped
 }
 
-var initialized sync.Once
-var available bool
+var (
+	initialized sync.Once
+	available   bool
+)
 
 func Initialize() bool {
 	initialized.Do(func() {
@@ -108,7 +110,7 @@ func Initialize() bool {
 			return
 		}
 		defer windows.CloseHandle(socket)
-		var WSAID_MULTIPLE_RIO = &windows.GUID{0x8509e081, 0x96dd, 0x4005, [8]byte{0xb1, 0x65, 0x9e, 0x2e, 0xe8, 0xc7, 0x9e, 0x3f}}
+		WSAID_MULTIPLE_RIO := &windows.GUID{0x8509e081, 0x96dd, 0x4005, [8]byte{0xb1, 0x65, 0x9e, 0x2e, 0xe8, 0xc7, 0x9e, 0x3f}}
 		const SIO_GET_MULTIPLE_EXTENSION_FUNCTION_POINTER = 0xc8000024
 		ob := uint32(0)
 		err = windows.WSAIoctl(socket, SIO_GET_MULTIPLE_EXTENSION_FUNCTION_POINTER,

device/allowedips_test.go

@@ -20,7 +20,6 @@ type testPairCommonBits struct {
 }
 
 func TestCommonBits(t *testing.T) {
-
 	tests := []testPairCommonBits{
 		{s1: []byte{1, 4, 53, 128}, s2: []byte{0, 0, 0, 0}, match: 7},
 		{s1: []byte{0, 4, 53, 128}, s2: []byte{0, 0, 0, 0}, match: 13},
@@ -41,7 +40,7 @@ func TestCommonBits(t *testing.T) {
 	}
 }
 
-func benchmarkTrie(peerNumber int, addressNumber int, addressLength int, b *testing.B) {
+func benchmarkTrie(peerNumber, addressNumber, addressLength int, b *testing.B) {
 	var trie *trieEntry
 	var peers []*Peer
 	root := parentIndirection{&trie, 2}

device/cookie.go

@@ -83,7 +83,7 @@ func (st *CookieChecker) CheckMAC1(msg []byte) bool {
 	return hmac.Equal(mac1[:], msg[smac1:smac2])
 }
 
-func (st *CookieChecker) CheckMAC2(msg []byte, src []byte) bool {
+func (st *CookieChecker) CheckMAC2(msg, src []byte) bool {
 	st.RLock()
 	defer st.RUnlock()
 
@@ -119,7 +119,6 @@ func (st *CookieChecker) CreateReply(
 	recv uint32,
 	src []byte,
 ) (*MessageCookieReply, error) {
-
 	st.RLock()
 
 	// refresh cookie secret
@@ -204,7 +203,6 @@ func (st *CookieGenerator) ConsumeReply(msg *MessageCookieReply) bool {
 
 	xchapoly, _ := chacha20poly1305.NewX(st.mac2.encryptionKey[:])
 	_, err := xchapoly.Open(cookie[:0], msg.Nonce[:], msg.Cookie[:], st.mac2.lastMAC1[:])
-
 	if err != nil {
 		return false
 	}
@@ -215,7 +213,6 @@ func (st *CookieGenerator) ConsumeReply(msg *MessageCookieReply) bool {
 }
 
 func (st *CookieGenerator) AddMacs(msg []byte) {
-
 	size := len(msg)
 
 	smac2 := size - blake2s.Size128

device/cookie_test.go

@@ -10,7 +10,6 @@ import (
 )
 
 func TestCookieMAC1(t *testing.T) {
-
 	// setup generator / checker
 
 	var (
@@ -132,12 +131,12 @@ func TestCookieMAC1(t *testing.T) {
 
 		msg[5] ^= 0x20
 
-		srcBad1 := []byte{192, 168, 13, 37, 40, 01}
+		srcBad1 := []byte{192, 168, 13, 37, 40, 1}
 		if checker.CheckMAC2(msg, srcBad1) {
 			t.Fatal("MAC2 generation/verification failed")
 		}
 
-		srcBad2 := []byte{192, 168, 13, 38, 40, 01}
+		srcBad2 := []byte{192, 168, 13, 38, 40, 1}
 		if checker.CheckMAC2(msg, srcBad2) {
 			t.Fatal("MAC2 generation/verification failed")
 		}

device/device_test.go

@@ -48,7 +48,7 @@ func uapiCfg(cfg ...string) string {
 
 // genConfigs generates a pair of configs that connect to each other.
 // The configs use distinct, probably-usable ports.
-func genConfigs(tb testing.TB) (cfgs [2]string, endpointCfgs [2]string) {
+func genConfigs(tb testing.TB) (cfgs, endpointCfgs [2]string) {
 	var key1, key2 NoisePrivateKey
 	_, err := rand.Read(key1[:])
 	if err != nil {

device/kdf_test.go

@@ -20,7 +20,7 @@ type KDFTest struct {
 	t2    string
 }
 
-func assertEquals(t *testing.T, a string, b string) {
+func assertEquals(t *testing.T, a, b string) {
 	if a != b {
 		t.Fatal("expected", a, "=", b)
 	}

device/noise-protocol.go

@@ -138,11 +138,11 @@ var (
 	ZeroNonce       [chacha20poly1305.NonceSize]byte
 )
 
-func mixKey(dst *[blake2s.Size]byte, c *[blake2s.Size]byte, data []byte) {
+func mixKey(dst, c *[blake2s.Size]byte, data []byte) {
 	KDF1(dst, c[:], data)
 }
 
-func mixHash(dst *[blake2s.Size]byte, h *[blake2s.Size]byte, data []byte) {
+func mixHash(dst, h *[blake2s.Size]byte, data []byte) {
 	hash, _ := blake2s.New256(nil)
 	hash.Write(h[:])
 	hash.Write(data)
@@ -175,7 +175,7 @@ func init() {
 }
 
 func (device *Device) CreateMessageInitiation(peer *Peer) (*MessageInitiation, error) {
-	var errZeroECDHResult = errors.New("ECDH returned all zeros")
+	errZeroECDHResult := errors.New("ECDH returned all zeros")
 
 	device.staticIdentity.RLock()
 	defer device.staticIdentity.RUnlock()
@@ -436,7 +436,6 @@ func (device *Device) ConsumeMessageResponse(msg *MessageResponse) *Peer {
 	)
 
 	ok := func() bool {
-
 		// lock handshake state
 
 		handshake.mutex.RLock()

device/send.go

@@ -226,7 +226,6 @@ func (device *Device) RoutineReadFromTUN() {
 
 		offset := MessageTransportHeaderSize
 		size, err := device.tun.device.Read(elem.buffer[:], offset)
-
 		if err != nil {
 			if !device.isClosed() {
 				if !errors.Is(err, os.ErrClosed) {

device/timers.go

@@ -130,7 +130,6 @@ func expiredNewHandshake(peer *Peer) {
 	}
 	peer.Unlock()
 	peer.SendHandshakeInitiation(false)
-
 }
 
 func expiredZeroKeyMaterial(peer *Peer) {

device/uapi.go

@@ -73,7 +73,6 @@ func (device *Device) IpcGetOperation(w io.Writer) error {
 	}
 
 	func() {
-
 		// lock required resources
 
 		device.net.RLock()

ipc/namedpipe/file.go

@@ -22,8 +22,10 @@ import (
 
 type timeoutChan chan struct{}
 
-var ioInitOnce sync.Once
-var ioCompletionPort windows.Handle
+var (
+	ioInitOnce       sync.Once
+	ioCompletionPort windows.Handle
+)
 
 // ioResult contains the result of an asynchronous IO operation
 type ioResult struct {

ipc/namedpipe/namedpipe_test.go

@@ -169,7 +169,7 @@ func TestDialAccessDeniedWithRestrictedSD(t *testing.T) {
 	}
 }
 
-func getConnection(cfg *namedpipe.ListenConfig) (client net.Conn, server net.Conn, err error) {
+func getConnection(cfg *namedpipe.ListenConfig) (client, server net.Conn, err error) {
 	pipePath := randomPipePath()
 	if cfg == nil {
 		cfg = &namedpipe.ListenConfig{}

ipc/uapi_bsd.go

@@ -54,7 +54,6 @@ func (l *UAPIListener) Addr() net.Addr {
 }
 
 func UAPIListen(name string, file *os.File) (net.Listener, error) {
-
 	// wrap file in listener
 
 	listener, err := net.FileListener(file)

ipc/uapi_linux.go

@@ -51,7 +51,6 @@ func (l *UAPIListener) Addr() net.Addr {
 }
 
 func UAPIListen(name string, file *os.File) (net.Listener, error) {
-
 	// wrap file in listener
 
 	listener, err := net.FileListener(file)

ipc/uapi_unix.go

@@ -33,7 +33,7 @@ func sockPath(iface string) string {
 }
 
 func UAPIOpen(name string) (*os.File, error) {
-	if err := os.MkdirAll(socketDirectory, 0755); err != nil {
+	if err := os.MkdirAll(socketDirectory, 0o755); err != nil {
 		return nil, err
 	}
 
@@ -43,7 +43,7 @@ func UAPIOpen(name string) (*os.File, error) {
 		return nil, err
 	}
 
-	oldUmask := unix.Umask(0077)
+	oldUmask := unix.Umask(0o077)
 	defer unix.Umask(oldUmask)
 
 	listener, err := net.ListenUnix("unix", addr)

main.go

@@ -169,7 +169,6 @@ func main() {
 
 		return os.NewFile(uintptr(fd), ""), nil
 	}()
-
 	if err != nil {
 		logger.Errorf("UAPI listen error: %v", err)
 		os.Exit(ExitSetupFailed)

replay/replay.go

@@ -34,7 +34,7 @@ func (f *Filter) Reset() {
 
 // ValidateCounter checks if the counter should be accepted.
 // Overlimit counters (>= limit) are always rejected.
-func (f *Filter) ValidateCounter(counter uint64, limit uint64) bool {
+func (f *Filter) ValidateCounter(counter, limit uint64) bool {
 	if counter >= limit {
 		return false
 	}

rwcancel/rwcancel_stub.go

@@ -4,7 +4,6 @@
 
 package rwcancel
 
-type RWCancel struct {
-}
+type RWCancel struct{}
 
 func (*RWCancel) Cancel() {}

tai64n/tai64n.go

@@ -11,9 +11,11 @@ import (
 	"time"
 )
 
-const TimestampSize = 12
-const base = uint64(0x400000000000000a)
-const whitenerMask = uint32(0x1000000 - 1)
+const (
+	TimestampSize = 12
+	base          = uint64(0x400000000000000a)
+	whitenerMask  = uint32(0x1000000 - 1)
+)
 
 type Timestamp [TimestampSize]byte
 

tun/netstack/tun.go

@@ -42,8 +42,11 @@ type netTun struct {
 	dnsServers     []netip.Addr
 	hasV4, hasV6   bool
 }
-type endpoint netTun
-type Net netTun
+
+type (
+	endpoint netTun
+	Net      netTun
+)
 
 func (e *endpoint) Attach(dispatcher stack.NetworkDispatcher) {
 	e.dispatcher = dispatcher

tun/tun_darwin.go

@@ -141,7 +141,7 @@ func CreateTUN(name string, mtu int) (Device, error) {
 	if err == nil && name == "utun" {
 		fname := os.Getenv("WG_TUN_NAME_FILE")
 		if fname != "" {
-			os.WriteFile(fname, []byte(tun.(*NativeTun).name+"\n"), 0400)
+			os.WriteFile(fname, []byte(tun.(*NativeTun).name+"\n"), 0o400)
 		}
 	}
 
@@ -232,7 +232,6 @@ func (tun *NativeTun) Read(buff []byte, offset int) (int, error) {
 }
 
 func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
-
 	// reserve space for header
 
 	buff = buff[offset-4:]
@@ -282,7 +281,6 @@ func (tun *NativeTun) setMTU(n int) error {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return err
 	}
@@ -306,7 +304,6 @@ func (tun *NativeTun) MTU() (int, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return 0, err
 	}

tun/tun_linux.go

@@ -232,7 +232,6 @@ func (tun *NativeTun) setMTU(n int) error {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return err
 	}
@@ -269,7 +268,6 @@ func (tun *NativeTun) MTU() (int, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return 0, err
 	}

tun/tun_openbsd.go

@@ -133,7 +133,7 @@ func CreateTUN(name string, mtu int) (Device, error) {
 	if err == nil && name == "tun" {
 		fname := os.Getenv("WG_TUN_NAME_FILE")
 		if fname != "" {
-			os.WriteFile(fname, []byte(tun.(*NativeTun).name+"\n"), 0400)
+			os.WriteFile(fname, []byte(tun.(*NativeTun).name+"\n"), 0o400)
 		}
 	}
 
@@ -219,7 +219,6 @@ func (tun *NativeTun) Read(buff []byte, offset int) (int, error) {
 }
 
 func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
-
 	// reserve space for header
 
 	buff = buff[offset-4:]
@@ -274,7 +273,6 @@ func (tun *NativeTun) setMTU(n int) error {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return err
 	}
@@ -309,7 +307,6 @@ func (tun *NativeTun) MTU() (int, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return 0, err
 	}

tun/tun_windows.go

@@ -46,8 +46,10 @@ type NativeTun struct {
 	forcedMTU int
 }
 
-var WintunTunnelType = "WireGuard"
-var WintunStaticRequestedGUID *windows.GUID
+var (
+	WintunTunnelType          = "WireGuard"
+	WintunStaticRequestedGUID *windows.GUID
+)
 
 //go:linkname procyield runtime.procyield
 func procyield(cycles uint32)