Refactorization and further implementation

- renamed clientoinfo to updaterequest
- added userconfig skeleton
- added hashed password skeleton

cmd/hash-password.go

@@ -0,0 +1,49 @@
+package cmd
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"os"
+
+	"gitea.nehmer.net/torben/dyndns/service"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"golang.org/x/crypto/bcrypt"
+	"golang.org/x/crypto/ssh/terminal"
+)
+
+var cmdHashPassword = &cobra.Command{
+	Use:   "hash-password",
+	Short: "Hashes a password for usage in user config files",
+	Long: `Creates a salted hash using bcrypt for use in userconfig files, so that we don't
+have to store a plaintext password.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		log.Printf("Configuration in use: %v", viper.AllSettings())
+		service.LoadConfig()
+
+		fmt.Println("Enter password:")
+		password, err := terminal.ReadPassword(int(os.Stdin.Fd()))
+		if err != nil {
+			log.Fatalf("failed to read password: %v", err)
+		}
+		fmt.Println("Enter password again:")
+		passwordCheck, err := terminal.ReadPassword(int(os.Stdin.Fd()))
+		if err != nil {
+			log.Fatalf("failed to read password: %v", err)
+		}
+		if !bytes.Equal(password, passwordCheck) {
+			log.Fatalln("the passwords do not match.")
+		}
+
+		hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+		if err != nil {
+			log.Fatalf("failed to create password hash: %v", err)
+		}
+		fmt.Printf("Hashed password: %s\n", hash)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(cmdHashPassword)
+}