frostfs-node/cmd/neofs-cli/modules/root.go
Alex Vanin a9d296faa8 [#87] Use viper to configure key and endpoint in CLI
With viper we can set up key and endpoint with config
and environmental variables with `NEOFS_CLI` prefix.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
2020-10-13 14:02:48 +03:00

184 lines
4.9 KiB
Go

package cmd
import (
"crypto/ecdsa"
"crypto/rand"
"encoding/hex"
"errors"
"fmt"
"os"
"github.com/mitchellh/go-homedir"
"github.com/mr-tron/base58"
"github.com/nspcc-dev/neofs-api-go/pkg/client"
"github.com/nspcc-dev/neofs-api-go/pkg/owner"
crypto "github.com/nspcc-dev/neofs-crypto"
"github.com/nspcc-dev/neofs-node/pkg/network"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
const (
envPrefix = "NEOFS_CLI"
generateKeyConst = "new"
)
// Global scope flags.
var (
cfgFile string
verbose bool
)
// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
Use: "neofs-cli",
Short: "Command Line Tool to work with NeoFS",
Long: `NeoFS CLI provides all basic interactions with NeoFS and it's services.
It contains commands for interaction with NeoFS nodes using different versions
of neofs-api and some useful utilities for compiling ACL rules from JSON
notation, managing container access through protocol gates, querying network map
and much more!`,
}
var (
errInvalidKey = errors.New("provided key is incorrect")
errInvalidEndpoint = errors.New("provided RPC endpoint is incorrect")
errCantGenerateKey = errors.New("can't generate new private key")
)
// Execute adds all child commands to the root command and sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
if err := rootCmd.Execute(); err != nil {
os.Exit(1)
}
}
func init() {
cobra.OnInitialize(initConfig)
// Here you will define your flags and configuration settings.
// Cobra supports persistent flags, which, if defined here,
// will be global for your application.
rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "", "config file (default is $HOME/.config/neofs-cli/config.yaml)")
rootCmd.PersistentFlags().StringP("key", "k", "", "private key in hex, WIF or filepath (use `--key new` to generate key for request)")
_ = viper.BindPFlag("key", rootCmd.PersistentFlags().Lookup("key"))
rootCmd.PersistentFlags().StringP("rpc-endpoint", "r", "", "remote node address (as 'multiaddr' or '<host>:<port>')")
_ = viper.BindPFlag("rpc", rootCmd.PersistentFlags().Lookup("rpc-endpoint"))
rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose output")
// Cobra also supports local flags, which will only run
// when this action is called directly.
// rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" {
// Use config file from the flag.
viper.SetConfigFile(cfgFile)
} else {
// Find home directory.
home, err := homedir.Dir()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
// Search config in home directory with name ".main" (without extension).
viper.AddConfigPath(home)
viper.SetConfigName(".config/neofs-cli")
}
viper.SetEnvPrefix(envPrefix)
viper.AutomaticEnv() // read in environment variables that match
// If a config file is found, read it in.
if err := viper.ReadInConfig(); err == nil {
fmt.Println("Using config file:", viper.ConfigFileUsed())
}
}
// getKey returns private key that was provided in global arguments.
func getKey() (*ecdsa.PrivateKey, error) {
privateKey := viper.GetString("key")
if privateKey == generateKeyConst {
buf := make([]byte, crypto.PrivateKeyCompressedSize)
_, err := rand.Read(buf)
if err != nil {
return nil, errCantGenerateKey
}
if verbose {
fmt.Println("Generating private key:", hex.EncodeToString(buf))
}
return crypto.UnmarshalPrivateKey(buf)
}
key, err := crypto.LoadPrivateKey(privateKey)
if err != nil {
return nil, errInvalidKey
}
return key, nil
}
// getEndpointAddress returns network address structure that stores multiaddr
// inside, parsed from global arguments.
func getEndpointAddress() (*network.Address, error) {
endpoint := viper.GetString("rpc")
addr, err := network.AddressFromString(endpoint)
if err != nil {
return nil, errInvalidEndpoint
}
return addr, nil
}
// getSDKClient returns default neofs-api-go sdk client. Consider using
// opts... to provide TTL or other global configuration flags.
func getSDKClient() (*client.Client, error) {
key, err := getKey()
if err != nil {
return nil, err
}
netAddr, err := getEndpointAddress()
if err != nil {
return nil, err
}
ipAddr, err := netAddr.IPAddrString()
if err != nil {
return nil, errInvalidEndpoint
}
return client.New(key, client.WithAddress(ipAddr))
}
// ownerFromString converts string with NEO3 wallet address to neofs owner ID.
func ownerFromString(s string) (*owner.ID, error) {
var w owner.NEO3Wallet
// todo: move this into neofs-api-go `owner.NEO3WalletFromString` function
binaryWallet, err := base58.Decode(s)
if err != nil || len(binaryWallet) != len(w) {
return nil, errors.New("can't decode owner ID wallet address")
}
copy(w[:], binaryWallet)
id := owner.NewID()
id.SetNeo3Wallet(&w)
return id, nil
}