7139279cd0
This commit overhauls wireguard-go's logging. The primary, motivating change is to use a function instead of a *log.Logger as the basic unit of logging. Using functions provides a lot more flexibility for people to bring their own logging system. It also introduces logging helper methods on Device. These reduce line noise at the call site. They also allow for log functions to be nil; when nil, instead of generating a log line and throwing it away, we don't bother generating it at all. This spares allocation and pointless work. This is a breaking change, although the fix required of clients is fairly straightforward. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
95 lines
1.9 KiB
Go
95 lines
1.9 KiB
Go
/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2017-2020 WireGuard LLC. All Rights Reserved.
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*/
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package main
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import (
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"fmt"
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"os"
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"os/signal"
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"syscall"
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"golang.zx2c4.com/wireguard/device"
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"golang.zx2c4.com/wireguard/ipc"
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"golang.zx2c4.com/wireguard/tun"
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)
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const (
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ExitSetupSuccess = 0
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ExitSetupFailed = 1
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)
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func main() {
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if len(os.Args) != 2 {
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os.Exit(ExitSetupFailed)
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}
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interfaceName := os.Args[1]
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fmt.Fprintln(os.Stderr, "Warning: this is a test program for Windows, mainly used for debugging this Go package. For a real WireGuard for Windows client, the repo you want is <https://git.zx2c4.com/wireguard-windows/>, which includes this code as a module.")
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logger := device.NewLogger(
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device.LogLevelDebug,
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fmt.Sprintf("(%s) ", interfaceName),
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)
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logger.Infof("Starting wireguard-go version %v", device.WireGuardGoVersion)
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logger.Debugf("Debug log enabled")
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tun, err := tun.CreateTUN(interfaceName, 0)
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if err == nil {
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realInterfaceName, err2 := tun.Name()
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if err2 == nil {
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interfaceName = realInterfaceName
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}
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} else {
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logger.Errorf("Failed to create TUN device: %v", err)
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os.Exit(ExitSetupFailed)
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}
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device := device.NewDevice(tun, logger)
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device.Up()
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logger.Infof("Device started")
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uapi, err := ipc.UAPIListen(interfaceName)
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if err != nil {
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logger.Errorf("Failed to listen on uapi socket: %v", err)
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os.Exit(ExitSetupFailed)
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}
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errs := make(chan error)
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term := make(chan os.Signal, 1)
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go func() {
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for {
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conn, err := uapi.Accept()
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if err != nil {
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errs <- err
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return
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}
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go device.IpcHandle(conn)
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}
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}()
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logger.Infof("UAPI listener started")
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// wait for program to terminate
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signal.Notify(term, os.Interrupt)
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signal.Notify(term, os.Kill)
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signal.Notify(term, syscall.SIGTERM)
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select {
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case <-term:
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case <-errs:
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case <-device.Wait():
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}
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// clean up
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uapi.Close()
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device.Close()
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logger.Infof("Shutting down")
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}
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