Freshen up existing cmd files

cmd/get.go

@@ -25,20 +25,18 @@ var getCmd = &cobra.Command{
 	Use:   "get <name>",
 	Short: "Get details of one key",
 	Long:  `Return public details of one local key.`,
-	RunE: func(cmd *cobra.Command, args []string) error {
-		if len(args) != 1 || len(args[0]) == 0 {
-			return errors.New("You must provide a name for the key")
-		}
-		name := args[0]
-
-		info, err := GetKeyManager().Get(name)
-		if err == nil {
-			printInfo(info)
-		}
-		return err
-	},
+	RunE:  runGetCmd,
 }
 
-func init() {
-	RootCmd.AddCommand(getCmd)
+func runGetCmd(cmd *cobra.Command, args []string) error {
+	if len(args) != 1 || len(args[0]) == 0 {
+		return errors.New("You must provide a name for the key")
+	}
+	name := args[0]
+
+	info, err := GetKeyManager().Get(name)
+	if err == nil {
+		printInfo(info)
+	}
+	return err
 }

cmd/keys/main.go

@@ -22,6 +22,9 @@ import (
 )
 
 func main() {
+	// for demos, we enable the key server, probably don't want this
+	// in most binaries we embed the key management into
+	cmd.RegisterServer()
 	root := cli.PrepareMainCmd(cmd.RootCmd, "TM", os.ExpandEnv("$HOME/.tlc"))
 	root.Execute()
 }

cmd/list.go

@@ -22,15 +22,13 @@ var listCmd = &cobra.Command{
 	Short: "List all keys",
 	Long: `Return a list of all public keys stored by this key manager
 along with their associated name and address.`,
-	RunE: func(cmd *cobra.Command, args []string) error {
-		infos, err := GetKeyManager().List()
-		if err == nil {
-			printInfos(infos)
-		}
-		return err
-	},
+	RunE: runListCmd,
 }
 
-func init() {
-	RootCmd.AddCommand(listCmd)
+func runListCmd(cmd *cobra.Command, args []string) error {
+	infos, err := GetKeyManager().List()
+	if err == nil {
+		printInfos(infos)
+	}
+	return err
 }

cmd/new.go

@@ -21,6 +21,10 @@ import (
 	"github.com/spf13/viper"
 )
 
+const (
+	flagType = "type"
+)
+
 // newCmd represents the new command
 var newCmd = &cobra.Command{
 	Use:   "new <name>",
@@ -28,20 +32,19 @@ var newCmd = &cobra.Command{
 	Long: `Add a public/private key pair to the key store.
 The password muts be entered in the terminal and not
 passed as a command line argument for security.`,
-	RunE: newPassword,
+	RunE: runNewCmd,
 }
 
 func init() {
-	RootCmd.AddCommand(newCmd)
-	newCmd.Flags().StringP("type", "t", "ed25519", "Type of key (ed25519|secp256k1)")
+	newCmd.Flags().StringP(flagType, "t", "ed25519", "Type of key (ed25519|secp256k1)")
 }
 
-func newPassword(cmd *cobra.Command, args []string) error {
+func runNewCmd(cmd *cobra.Command, args []string) error {
 	if len(args) != 1 || len(args[0]) == 0 {
 		return errors.New("You must provide a name for the key")
 	}
 	name := args[0]
-	algo := viper.GetString("type")
+	algo := viper.GetString(flagType)
 
 	pass, err := getCheckPassword("Enter a passphrase:", "Repeat the passphrase:")
 	if err != nil {

cmd/root.go

@@ -15,14 +15,8 @@
 package cmd
 
 import (
-	"path/filepath"
-
 	"github.com/spf13/cobra"
-	"github.com/spf13/viper"
 	keys "github.com/tendermint/go-crypto/keys"
-	"github.com/tendermint/go-crypto/keys/cryptostore"
-	"github.com/tendermint/go-crypto/keys/storage/filestorage"
-	"github.com/tendermint/tmlibs/cli"
 )
 
 const KeySubdir = "keys"
@@ -42,22 +36,13 @@ used by light-clients, full nodes, or any other application that
 needs to sign with a private key.`,
 }
 
-// GetKeyManager initializes a key manager based on the configuration
-func GetKeyManager() keys.Manager {
-	if manager == nil {
-		// store the keys directory
-		rootDir := viper.GetString(cli.HomeFlag)
-		keyDir := filepath.Join(rootDir, KeySubdir)
-
-		// TODO: smarter loading??? with language and fallback?
-		codec := keys.MustLoadCodec("english")
-
-		// and construct the key manager
-		manager = cryptostore.New(
-			cryptostore.SecretBox,
-			filestorage.New(keyDir),
-			codec,
-		)
-	}
-	return manager
+func init() {
+	RootCmd.AddCommand(getCmd)
+	RootCmd.AddCommand(listCmd)
+	RootCmd.AddCommand(newCmd)
+	RootCmd.AddCommand(updateCmd)
+}
+
+func RegisterServer() {
+	RootCmd.AddCommand(serveCmd)
 }

cmd/serve.go

@@ -28,6 +28,11 @@ import (
 	"github.com/tendermint/go-crypto/keys/server"
 )
 
+const (
+	flagPort   = "port"
+	flagSocket = "socket"
+)
+
 // serveCmd represents the serve command
 var serveCmd = &cobra.Command{
 	Use:   "serve",
@@ -36,27 +41,26 @@ var serveCmd = &cobra.Command{
 private keys much more in depth than the cli can perform.
 In particular, this will allow you to sign transactions with
 the private keys in the store.`,
-	RunE: serveHTTP,
+	RunE: runServeCmd,
 }
 
 func init() {
-	RootCmd.AddCommand(serveCmd)
-	serveCmd.Flags().IntP("port", "p", 8118, "TCP Port for listen for http server")
-	serveCmd.Flags().StringP("socket", "s", "", "UNIX socket for more secure http server")
-	serveCmd.Flags().StringP("type", "t", "ed25519", "Default key type (ed25519|secp256k1)")
+	serveCmd.Flags().IntP(flagPort, "p", 8118, "TCP Port for listen for http server")
+	serveCmd.Flags().StringP(flagSocket, "s", "", "UNIX socket for more secure http server")
+	serveCmd.Flags().StringP(flagType, "t", "ed25519", "Default key type (ed25519|secp256k1)")
 }
 
-func serveHTTP(cmd *cobra.Command, args []string) error {
+func runServeCmd(cmd *cobra.Command, args []string) error {
 	var l net.Listener
 	var err error
-	socket := viper.GetString("socket")
+	socket := viper.GetString(flagSocket)
 	if socket != "" {
 		l, err = createSocket(socket)
 		if err != nil {
 			return errors.Wrap(err, "Cannot create socket")
 		}
 	} else {
-		port := viper.GetInt("port")
+		port := viper.GetInt(flagPort)
 		l, err = net.Listen("tcp", fmt.Sprintf(":%d", port))
 		if err != nil {
 			return errors.Errorf("Cannot listen on port %d", port)
@@ -64,7 +68,7 @@ func serveHTTP(cmd *cobra.Command, args []string) error {
 	}
 
 	router := mux.NewRouter()
-	ks := server.New(GetKeyManager(), viper.GetString("type"))
+	ks := server.New(GetKeyManager(), viper.GetString(flagType))
 	ks.Register(router)
 
 	// only set cors for tcp listener

cmd/update.go

@@ -26,15 +26,10 @@ import (
 var updateCmd = &cobra.Command{
 	Use:   "update <name>",
 	Short: "Change the password for a private key",
-	Long:  `Change the password for a private key.`,
-	RunE:  updatePassword,
+	RunE:  runUpdateCmd,
 }
 
-func init() {
-	RootCmd.AddCommand(updateCmd)
-}
-
-func updatePassword(cmd *cobra.Command, args []string) error {
+func runUpdateCmd(cmd *cobra.Command, args []string) error {
 	if len(args) != 1 || len(args[0]) == 0 {
 		return errors.New("You must provide a name for the key")
 	}

cmd/utils.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
+	"path/filepath"
 	"strings"
 
 	"github.com/bgentry/speakeasy"
@@ -15,9 +16,31 @@ import (
 	"github.com/tendermint/tmlibs/cli"
 
 	keys "github.com/tendermint/go-crypto/keys"
+	"github.com/tendermint/go-crypto/keys/cryptostore"
+	"github.com/tendermint/go-crypto/keys/storage/filestorage"
 )
 
-const PassLength = 10
+const MinPassLength = 10
+
+// GetKeyManager initializes a key manager based on the configuration
+func GetKeyManager() keys.Manager {
+	if manager == nil {
+		// store the keys directory
+		rootDir := viper.GetString(cli.HomeFlag)
+		keyDir := filepath.Join(rootDir, KeySubdir)
+
+		// TODO: smarter loading??? with language and fallback?
+		codec := keys.MustLoadCodec("english")
+
+		// and construct the key manager
+		manager = cryptostore.New(
+			cryptostore.SecretBox,
+			filestorage.New(keyDir),
+			codec,
+		)
+	}
+	return manager
+}
 
 // if we read from non-tty, we just need to init the buffer reader once,
 // in case we try to read multiple passwords (eg. update)
@@ -47,8 +70,8 @@ func getPassword(prompt string) (pass string, err error) {
 	if err != nil {
 		return "", err
 	}
-	if len(pass) < PassLength {
-		return "", errors.Errorf("Password must be at least %d characters", PassLength)
+	if len(pass) < MinPassLength {
+		return "", errors.Errorf("Password must be at least %d characters", MinPassLength)
 	}
 	return pass, nil
 }