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package main
import (
"context"
"errors"
"fmt"
"log"
"os"
"os/signal"
"path"
"strings"
"syscall"
"github.com/mitchellh/go-homedir"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var (
cfgFile string
cfgName string
)
var (
version = "v0.0.0"
commit = "dev"
)
func main() {
cobra.OnInitialize(initCobra)
rootCmd := &cobra.Command{
Use: "netboard",
Short: "Simple and secure network clipboard sharing engine",
SilenceUsage: true,
SilenceErrors: true,
TraverseChildren: true,
PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
if err := viper.BindPFlags(cmd.PersistentFlags()); err != nil {
return err
}
return viper.BindPFlags(cmd.Flags())
},
Run: func(cmd *cobra.Command, args []string) {
if viper.GetBool("version") {
fmt.Printf("netboard %s (%s)\n", version, commit)
os.Exit(0)
}
},
}
rootCmd.Flags().Bool("version", false, "Show version")
rootCmd.AddCommand(
serverCmd,
listenCmd,
)
mainCtx, cancelFunc := context.WithCancel(context.Background())
defer cancelFunc()
signalCh := make(chan os.Signal, 1)
signal.Reset(syscall.SIGINT, syscall.SIGTERM)
signal.Notify(signalCh, syscall.SIGINT, syscall.SIGTERM)
go func() {
<-signalCh
cancelFunc()
signal.Stop(signalCh)
close(signalCh)
}()
if err := rootCmd.ExecuteContext(mainCtx); err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
}
func initCobra() {
viper.SetEnvPrefix("netboard")
viper.AutomaticEnv()
viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
home, err := homedir.Dir()
if err != nil {
log.Fatalln("unable to find home dir: ", err)
}
if cfgFile == "" {
cfgFile = os.Getenv("NETBOARD_CONFIG")
}
if cfgFile != "" {
if _, err := os.Stat(cfgFile); os.IsNotExist(err) {
log.Fatalln("config file does not exist", err)
}
viper.SetConfigType("yaml")
viper.SetConfigFile(cfgFile)
if err = viper.ReadInConfig(); err != nil {
log.Fatalln("unable to read config", cfgFile)
}
return
}
viper.AddConfigPath(path.Join(home, ".config", "netboard"))
viper.AddConfigPath("/usr/local/etc/netboard")
viper.AddConfigPath("/etc/netboard")
if cfgName == "" {
cfgName = os.Getenv("NETBOARD_CONFIG_NAME")
}
if cfgName == "" {
cfgName = "config"
}
viper.SetConfigName(cfgName)
if err = viper.ReadInConfig(); err != nil {
if !errors.As(err, &viper.ConfigFileNotFoundError{}) {
log.Fatalln("unable to read config:", err)
}
}
}