130 lines
2.0 KiB
Go
130 lines
2.0 KiB
Go
package main
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import (
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"fmt"
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"log"
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"os"
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"os/signal"
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"runtime"
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)
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func printUsage() {
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fmt.Printf("usage:\n")
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fmt.Printf("%s [-f/--foreground] INTERFACE-NAME\n", os.Args[0])
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}
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func main() {
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// parse arguments
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var foreground bool
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var interfaceName string
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if len(os.Args) < 2 || len(os.Args) > 3 {
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printUsage()
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return
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}
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switch os.Args[1] {
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case "-f", "--foreground":
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foreground = true
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if len(os.Args) != 3 {
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printUsage()
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return
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}
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interfaceName = os.Args[2]
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default:
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foreground = false
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if len(os.Args) != 2 {
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printUsage()
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return
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}
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interfaceName = os.Args[1]
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}
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// daemonize the process
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if !foreground {
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err := Daemonize()
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if err != nil {
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log.Println("Failed to daemonize:", err)
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}
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return
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}
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// increase number of go workers (for Go <1.5)
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runtime.GOMAXPROCS(runtime.NumCPU())
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// open TUN device
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tun, err := CreateTUN(interfaceName)
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if err != nil {
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log.Println("Failed to create tun device:", err)
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return
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}
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// get log level (default: info)
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logLevel := func() int {
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switch os.Getenv("LOG_LEVEL") {
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case "debug":
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return LogLevelDebug
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case "info":
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return LogLevelInfo
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case "error":
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return LogLevelError
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}
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return LogLevelInfo
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}()
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// create wireguard device
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device := NewDevice(tun, logLevel)
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logInfo := device.log.Info
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logError := device.log.Error
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logInfo.Println("Starting device")
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// start configuration lister
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uapi, err := NewUAPIListener(interfaceName)
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if err != nil {
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logError.Fatal("UAPI listen error:", err)
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}
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errs := make(chan error)
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term := make(chan os.Signal)
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wait := device.WaitChannel()
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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 ipcHandle(device, conn)
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}
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}()
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logInfo.Println("UAPI listener started")
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// wait for program to terminate
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signal.Notify(term, os.Kill)
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signal.Notify(term, os.Interrupt)
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select {
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case <-wait:
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case <-term:
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case <-errs:
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}
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// clean up UAPI bind
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uapi.Close()
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logInfo.Println("Closing")
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}
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