global: begin modularization

Makefile

@@ -24,10 +24,10 @@ MAKEFLAGS += --no-print-directory
 generate-version-and-build:
 	@export GIT_CEILING_DIRECTORIES="$(realpath $(CURDIR)/..)" && \
 	tag="$$(git describe --dirty 2>/dev/null)" && \
-	ver="$$(printf 'package main\nconst WireGuardGoVersion = "%s"\n' "$$tag")" && \
+	ver="$$(printf 'package device\nconst WireGuardGoVersion = "%s"\n' "$$tag")" && \
-	[ "$$(cat version.go 2>/dev/null)" != "$$ver" ] && \
+	[ "$$(cat device/version.go 2>/dev/null)" != "$$ver" ] && \
-	echo "$$ver" > version.go && \
+	echo "$$ver" > device/version.go && \
-	git update-index --assume-unchanged version.go || true
+	git update-index --assume-unchanged device/version.go || true
 	@$(MAKE) wireguard-go
 
 wireguard-go: $(wildcard *.go) $(wildcard */*.go)

device/allowedips.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"errors"

device/allowedips_rand_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"math/rand"

device/allowedips_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"math/rand"

device/bind_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import "errors"
 

device/conn.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"errors"

device/conn_default.go

@@ -5,7 +5,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"net"

device/conn_linux.go

@@ -14,7 +14,7 @@
  * So this code is remains platform dependent.
  */
 
-package main
+package device
 
 import (
 	"errors"

device/constants.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"time"

device/cookie.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"crypto/hmac"

device/cookie_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"testing"

device/device.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"golang.zx2c4.com/wireguard/ratelimiter"

device/device_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 /* Create two device instances and simulate full WireGuard interaction
  * without network dependencies

device/endpoint_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"math/rand"

device/indextable.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"crypto/rand"

device/ip.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"net"

device/kdf_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"encoding/hex"

device/keypair.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"crypto/cipher"

device/logger.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"io"

device/mark_default.go

@@ -5,7 +5,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 func (bind *NativeBind) SetMark(mark uint32) error {
 	return nil

device/mark_unix.go

@@ -5,7 +5,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"golang.org/x/sys/unix"

device/misc.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"sync/atomic"

device/noise-helpers.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"crypto/hmac"

device/noise-protocol.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"errors"

device/noise-types.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"crypto/subtle"

device/noise_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"bytes"

device/peer.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"encoding/base64"

device/pools.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import "sync"
 

device/queueconstants.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 /* Implementation specific constants */
 

device/receive.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"bytes"

device/send.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"bytes"

device/timers.go

@@ -5,7 +5,7 @@
  * This is based heavily on timers.c from the kernel implementation.
  */
 
-package main
+package device
 
 import (
 	"math/rand"

device/tun.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"golang.zx2c4.com/wireguard/tun"

device/uapi.go

@@ -3,11 +3,12 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package device
 
 import (
 	"bufio"
 	"fmt"
+	"golang.zx2c4.com/wireguard/ipc"
 	"io"
 	"net"
 	"strconv"
@@ -28,7 +29,7 @@ func (s *IPCError) ErrorCode() int64 {
 	return s.int64
 }
 
-func ipcGetOperation(device *Device, socket *bufio.Writer) *IPCError {
+func (device *Device) IpcGetOperation(socket *bufio.Writer) *IPCError {
 
 	device.log.Debug.Println("UAPI: Processing get operation")
 
@@ -101,14 +102,14 @@ func ipcGetOperation(device *Device, socket *bufio.Writer) *IPCError {
 	for _, line := range lines {
 		_, err := socket.WriteString(line + "\n")
 		if err != nil {
-			return &IPCError{ipcErrorIO}
+			return &IPCError{ipc.IpcErrorIO}
 		}
 	}
 
 	return nil
 }
 
-func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
+func (device *Device) IpcSetOperation(socket *bufio.Reader) *IPCError {
 	scanner := bufio.NewScanner(socket)
 	logError := device.log.Error
 	logDebug := device.log.Debug
@@ -128,7 +129,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 		}
 		parts := strings.Split(line, "=")
 		if len(parts) != 2 {
-			return &IPCError{ipcErrorProtocol}
+			return &IPCError{ipc.IpcErrorProtocol}
 		}
 		key := parts[0]
 		value := parts[1]
@@ -143,7 +144,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 				err := sk.FromHex(value)
 				if err != nil {
 					logError.Println("Failed to set private_key:", err)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 				logDebug.Println("UAPI: Updating private key")
 				device.SetPrivateKey(sk)
@@ -155,7 +156,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 				port, err := strconv.ParseUint(value, 10, 16)
 				if err != nil {
 					logError.Println("Failed to parse listen_port:", err)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 				// update port and rebind
@@ -168,7 +169,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 
 				if err := device.BindUpdate(); err != nil {
 					logError.Println("Failed to set listen_port:", err)
-					return &IPCError{ipcErrorPortInUse}
+					return &IPCError{ipc.IpcErrorPortInUse}
 				}
 
 			case "fwmark":
@@ -185,14 +186,14 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 
 				if err != nil {
 					logError.Println("Invalid fwmark", err)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 				logDebug.Println("UAPI: Updating fwmark")
 
 				if err := device.BindSetMark(uint32(fwmark)); err != nil {
 					logError.Println("Failed to update fwmark:", err)
-					return &IPCError{ipcErrorPortInUse}
+					return &IPCError{ipc.IpcErrorPortInUse}
 				}
 
 			case "public_key":
@@ -203,14 +204,14 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 			case "replace_peers":
 				if value != "true" {
 					logError.Println("Failed to set replace_peers, invalid value:", value)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 				logDebug.Println("UAPI: Removing all peers")
 				device.RemoveAllPeers()
 
 			default:
 				logError.Println("Invalid UAPI device key:", key)
-				return &IPCError{ipcErrorInvalid}
+				return &IPCError{ipc.IpcErrorInvalid}
 			}
 		}
 
@@ -225,7 +226,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 				err := publicKey.FromHex(value)
 				if err != nil {
 					logError.Println("Failed to get peer by public key:", err)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 				// ignore peer with public key of device
@@ -244,7 +245,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 					peer, err = device.NewPeer(publicKey)
 					if err != nil {
 						logError.Println("Failed to create new peer:", err)
-						return &IPCError{ipcErrorInvalid}
+						return &IPCError{ipc.IpcErrorInvalid}
 					}
 					logDebug.Println(peer, "- UAPI: Created")
 				}
@@ -255,7 +256,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 
 				if value != "true" {
 					logError.Println("Failed to set remove, invalid value:", value)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 				if !dummy {
 					logDebug.Println(peer, "- UAPI: Removing")
@@ -276,7 +277,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 
 				if err != nil {
 					logError.Println("Failed to set preshared key:", err)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 			case "endpoint":
@@ -298,7 +299,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 
 				if err != nil {
 					logError.Println("Failed to set endpoint:", value)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 			case "persistent_keepalive_interval":
@@ -310,7 +311,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 				secs, err := strconv.ParseUint(value, 10, 16)
 				if err != nil {
 					logError.Println("Failed to set persistent keepalive interval:", err)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 				old := peer.persistentKeepaliveInterval
@@ -321,7 +322,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 				if old == 0 && secs != 0 {
 					if err != nil {
 						logError.Println("Failed to get tun device status:", err)
-						return &IPCError{ipcErrorIO}
+						return &IPCError{ipc.IpcErrorIO}
 					}
 					if device.isUp.Get() && !dummy {
 						peer.SendKeepalive()
@@ -334,7 +335,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 
 				if value != "true" {
 					logError.Println("Failed to replace allowedips, invalid value:", value)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 				if dummy {
@@ -350,7 +351,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 				_, network, err := net.ParseCIDR(value)
 				if err != nil {
 					logError.Println("Failed to set allowed ip:", err)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 				if dummy {
@@ -364,12 +365,12 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 
 				if value != "1" {
 					logError.Println("Invalid protocol version:", value)
-					return &IPCError{ipcErrorInvalid}
+					return &IPCError{ipc.IpcErrorInvalid}
 				}
 
 			default:
 				logError.Println("Invalid UAPI peer key:", key)
-				return &IPCError{ipcErrorInvalid}
+				return &IPCError{ipc.IpcErrorInvalid}
 			}
 		}
 	}
@@ -377,7 +378,7 @@ func ipcSetOperation(device *Device, socket *bufio.Reader) *IPCError {
 	return nil
 }
 
-func ipcHandle(device *Device, socket net.Conn) {
+func (device *Device) IpcHandle(socket net.Conn) {
 
 	// create buffered read/writer
 
@@ -403,11 +404,11 @@ func ipcHandle(device *Device, socket net.Conn) {
 	switch op {
 	case "set=1\n":
 		device.log.Debug.Println("UAPI: Set operation")
-		status = ipcSetOperation(device, buffered.Reader)
+		status = device.IpcSetOperation(buffered.Reader)
 
 	case "get=1\n":
 		device.log.Debug.Println("UAPI: Get operation")
-		status = ipcGetOperation(device, buffered.Writer)
+		status = device.IpcGetOperation(buffered.Writer)
 
 	default:
 		device.log.Error.Println("Invalid UAPI operation:", op)

device/version.go

@@ -0,0 +1,3 @@
+package device
+
+const WireGuardGoVersion = "0.0.20181222"

go.mod

@@ -2,7 +2,7 @@ module golang.zx2c4.com/wireguard
 
 require (
 	github.com/Microsoft/go-winio v0.4.11
-	golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67
+	golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25
-	golang.org/x/net v0.0.0-20190213061140-3a22650c66bd
+	golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95
-	golang.org/x/sys v0.0.0-20190213121743-983097b1a8a3
+	golang.org/x/sys v0.0.0-20190302025703-b6889370fb10
 )

go.sum

@@ -1,8 +1,9 @@
 github.com/Microsoft/go-winio v0.4.11 h1:zoIOcVf0xPN1tnMVbTtEdI+P8OofVk3NObnwOQ6nK2Q=
 github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
-golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67 h1:ng3VDlRp5/DHpSWl02R4rM9I+8M2rhmsuLwAMmkLQWE=
+golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25 h1:jsG6UpNLt9iAsb0S2AGW28DveNzzgmbXR+ENoPjUeIU=
-golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd h1:HuTn7WObtcDo9uEEU7rEqL0jYthdXAmZ6PP+meazmaU=
+golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95 h1:fY7Dsw114eJN4boqzVSbpVHO6rTdhq6/GnXeu+PKnzU=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/sys v0.0.0-20190213121743-983097b1a8a3 h1:+KlxhGbYkFs8lMfwKn+2ojry1ID5eBSMXprS2u/wqCE=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190213121743-983097b1a8a3/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190302025703-b6889370fb10 h1:xQJI9OEiErEQ++DoXOHqEpzsGMrAv2Q2jyCpi7DmfpQ=
+golang.org/x/sys v0.0.0-20190302025703-b6889370fb10/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

ipc/uapi_bsd.go

@@ -5,7 +5,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package ipc
 
 import (
 	"errors"
@@ -20,10 +20,10 @@ import (
 var socketDirectory = "/var/run/wireguard"
 
 const (
-	ipcErrorIO        = -int64(unix.EIO)
+	IpcErrorIO        = -int64(unix.EIO)
-	ipcErrorProtocol  = -int64(unix.EPROTO)
+	IpcErrorProtocol  = -int64(unix.EPROTO)
-	ipcErrorInvalid   = -int64(unix.EINVAL)
+	IpcErrorInvalid   = -int64(unix.EINVAL)
-	ipcErrorPortInUse = -int64(unix.EADDRINUSE)
+	IpcErrorPortInUse = -int64(unix.EADDRINUSE)
 	socketName        = "%s.sock"
 )
 

ipc/uapi_linux.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package ipc
 
 import (
 	"errors"
@@ -18,10 +18,10 @@ import (
 var socketDirectory = "/var/run/wireguard"
 
 const (
-	ipcErrorIO        = -int64(unix.EIO)
+	IpcErrorIO        = -int64(unix.EIO)
-	ipcErrorProtocol  = -int64(unix.EPROTO)
+	IpcErrorProtocol  = -int64(unix.EPROTO)
-	ipcErrorInvalid   = -int64(unix.EINVAL)
+	IpcErrorInvalid   = -int64(unix.EINVAL)
-	ipcErrorPortInUse = -int64(unix.EADDRINUSE)
+	IpcErrorPortInUse = -int64(unix.EADDRINUSE)
 	socketName        = "%s.sock"
 )
 

ipc/uapi_windows.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package ipc
 
 import (
 	"github.com/Microsoft/go-winio"
@@ -12,10 +12,10 @@ import (
 
 //TODO: replace these with actual standard windows error numbers from the win package
 const (
-	ipcErrorIO        = -int64(5)
+	IpcErrorIO        = -int64(5)
-	ipcErrorProtocol  = -int64(71)
+	IpcErrorProtocol  = -int64(71)
-	ipcErrorInvalid   = -int64(22)
+	IpcErrorInvalid   = -int64(22)
-	ipcErrorPortInUse = -int64(98)
+	IpcErrorPortInUse = -int64(98)
 )
 
 type UAPIListener struct {

main.go

@@ -9,6 +9,8 @@ package main
 
 import (
 	"fmt"
+	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/ipc"
 	"golang.zx2c4.com/wireguard/tun"
 	"os"
 	"os/signal"
@@ -76,7 +78,7 @@ func warning() {
 
 func main() {
 	if len(os.Args) == 2 && os.Args[1] == "--version" {
-		fmt.Printf("wireguard-go v%s\n\nUserspace WireGuard daemon for %s-%s.\nInformation available at https://www.wireguard.com.\nCopyright (C) Jason A. Donenfeld <Jason@zx2c4.com>.\n", WireGuardGoVersion, runtime.GOOS, runtime.GOARCH)
+		fmt.Printf("wireguard-go v%s\n\nUserspace WireGuard daemon for %s-%s.\nInformation available at https://www.wireguard.com.\nCopyright (C) Jason A. Donenfeld <Jason@zx2c4.com>.\n", device.WireGuardGoVersion, runtime.GOOS, runtime.GOARCH)
 		return
 	}
 
@@ -119,15 +121,15 @@ func main() {
 	logLevel := func() int {
 		switch os.Getenv("LOG_LEVEL") {
 		case "debug":
-			return LogLevelDebug
+			return device.LogLevelDebug
 		case "info":
-			return LogLevelInfo
+			return device.LogLevelInfo
 		case "error":
-			return LogLevelError
+			return device.LogLevelError
 		case "silent":
-			return LogLevelSilent
+			return device.LogLevelSilent
 		}
-		return LogLevelInfo
+		return device.LogLevelInfo
 	}()
 
 	// open TUN device (or use supplied fd)
@@ -135,7 +137,7 @@ func main() {
 	tun, err := func() (tun.TUNDevice, error) {
 		tunFdStr := os.Getenv(ENV_WG_TUN_FD)
 		if tunFdStr == "" {
-			return tun.CreateTUN(interfaceName, DefaultMTU)
+			return tun.CreateTUN(interfaceName, device.DefaultMTU)
 		}
 
 		// construct tun device from supplied fd
@@ -151,7 +153,7 @@ func main() {
 		}
 
 		file := os.NewFile(uintptr(fd), "")
-		return tun.CreateTUNFromFile(file, DefaultMTU)
+		return tun.CreateTUNFromFile(file, device.DefaultMTU)
 	}()
 
 	if err == nil {
@@ -161,12 +163,12 @@ func main() {
 		}
 	}
 
-	logger := NewLogger(
+	logger := device.NewLogger(
 		logLevel,
 		fmt.Sprintf("(%s) ", interfaceName),
 	)
 
-	logger.Info.Println("Starting wireguard-go version", WireGuardGoVersion)
+	logger.Info.Println("Starting wireguard-go version", device.WireGuardGoVersion)
 
 	logger.Debug.Println("Debug log enabled")
 
@@ -180,7 +182,7 @@ func main() {
 	fileUAPI, err := func() (*os.File, error) {
 		uapiFdStr := os.Getenv(ENV_WG_UAPI_FD)
 		if uapiFdStr == "" {
-			return UAPIOpen(interfaceName)
+			return ipc.UAPIOpen(interfaceName)
 		}
 
 		// use supplied fd
@@ -206,7 +208,7 @@ func main() {
 		env = append(env, fmt.Sprintf("%s=4", ENV_WG_UAPI_FD))
 		env = append(env, fmt.Sprintf("%s=1", ENV_WG_PROCESS_FOREGROUND))
 		files := [3]*os.File{}
-		if os.Getenv("LOG_LEVEL") != "" && logLevel != LogLevelSilent {
+		if os.Getenv("LOG_LEVEL") != "" && logLevel != device.LogLevelSilent {
 			files[0], _ = os.Open(os.DevNull)
 			files[1] = os.Stdout
 			files[2] = os.Stderr
@@ -246,14 +248,14 @@ func main() {
 		return
 	}
 
-	device := NewDevice(tun, logger)
+	device := device.NewDevice(tun, logger)
 
 	logger.Info.Println("Device started")
 
 	errs := make(chan error)
 	term := make(chan os.Signal, 1)
 
-	uapi, err := UAPIListen(interfaceName, fileUAPI)
+	uapi, err := ipc.UAPIListen(interfaceName, fileUAPI)
 	if err != nil {
 		logger.Error.Println("Failed to listen on uapi socket:", err)
 		os.Exit(ExitSetupFailed)
@@ -266,7 +268,7 @@ func main() {
 				errs <- err
 				return
 			}
-			go ipcHandle(device, conn)
+			go device.IpcHandle(conn)
 		}
 	}()
 

main_windows.go

@@ -7,6 +7,8 @@ package main
 
 import (
 	"fmt"
+	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/ipc"
 	"os"
 	"os/signal"
 	"syscall"
@@ -25,8 +27,8 @@ func main() {
 	}
 	interfaceName := os.Args[1]
 
-	logger := NewLogger(
+	logger := device.NewLogger(
-		LogLevelDebug,
+		device.LogLevelDebug,
 		fmt.Sprintf("(%s) ", interfaceName),
 	)
 	logger.Info.Println("Starting wireguard-go version", WireGuardGoVersion)
@@ -43,11 +45,11 @@ func main() {
 		os.Exit(ExitSetupFailed)
 	}
 
-	device := NewDevice(tun, logger)
+	device := device.NewDevice(tun, logger)
 	device.Up()
 	logger.Info.Println("Device started")
 
-	uapi, err := UAPIListen(interfaceName)
+	uapi, err := ipc.UAPIListen(interfaceName)
 	if err != nil {
 		logger.Error.Println("Failed to listen on uapi socket:", err)
 		os.Exit(ExitSetupFailed)
@@ -63,7 +65,7 @@ func main() {
 				errs <- err
 				return
 			}
-			go ipcHandle(device, conn)
+			go device.IpcHandle(conn)
 		}
 	}()
 	logger.Info.Println("UAPI listener started")

tun/helper_test.go

@@ -3,7 +3,7 @@
  * Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
  */
 
-package main
+package tun
 
 import (
 	"bytes"