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wallet.go
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wallet.go
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package wallet
import (
"encoding/hex"
"fmt"
"os"
"github.com/nknorg/nkn/api/httpjson/client"
. "github.com/nknorg/nkn/cmd/nknc/common"
. "github.com/nknorg/nkn/common"
"github.com/nknorg/nkn/crypto"
"github.com/nknorg/nkn/util/config"
"github.com/nknorg/nkn/util/password"
"github.com/nknorg/nkn/vault"
"github.com/urfave/cli"
)
func showAccountInfo(wallet vault.Wallet, verbose bool) {
const format = "%-37s %s\n"
account, _ := wallet.GetDefaultAccount()
fmt.Printf(format, "Address", "Public Key")
fmt.Printf(format, "-------", "----------")
address, _ := account.ProgramHash.ToAddress()
publicKey := account.PublicKey.EncodePoint()
fmt.Printf(format, address, BytesToHexString(publicKey))
if verbose {
fmt.Printf("\nSecret Seed\n-----------\n%s\n", BytesToHexString(crypto.GetSeedFromPrivateKey(account.PrivateKey)))
}
}
func getPassword(passwd string) []byte {
var tmp []byte
var err error
if passwd != "" {
tmp = []byte(passwd)
} else {
tmp, err = password.GetPassword()
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
return tmp
}
func getConfirmedPassword(passwd string) []byte {
var tmp []byte
var err error
if passwd != "" {
tmp = []byte(passwd)
} else {
tmp, err = password.GetConfirmedPassword()
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
return tmp
}
func walletAction(c *cli.Context) error {
if c.NumFlags() == 0 {
cli.ShowSubcommandHelp(c)
return nil
}
// wallet file name
name := c.String("name")
if name == "" {
fmt.Fprintln(os.Stderr, "invalid wallet name")
os.Exit(1)
}
// get password from the command line or from environment variable
passwd := c.String("password")
if passwd == "" {
passwd = os.Getenv("NKN_WALLET_PASSWORD")
}
// create wallet
if c.Bool("create") {
if FileExisted(name) {
fmt.Printf("CAUTION: '%s' already exists!\n", name)
os.Exit(1)
} else {
wallet, err := vault.NewWallet(name, getConfirmedPassword(passwd), true)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
showAccountInfo(wallet, false)
}
return nil
}
// list wallet info
if item := c.String("list"); item != "" {
if item != "account" && item != "balance" && item != "verbose" && item != "nonce" && item != "id" {
fmt.Fprintln(os.Stderr, "--list [account | balance | verbose | nonce | id]")
os.Exit(1)
} else {
wallet, err := vault.OpenWallet(name, getPassword(passwd))
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
var vbs bool
switch item {
case "verbose":
vbs = true
fallthrough
case "account":
showAccountInfo(wallet, vbs)
case "balance":
account, _ := wallet.GetDefaultAccount()
address, _ := account.ProgramHash.ToAddress()
resp, err := client.Call(Address(), "getbalancebyaddr", 0, map[string]interface{}{"address": address})
if err != nil {
fmt.Fprintln(os.Stderr, err)
return err
}
FormatOutput(resp)
case "nonce":
account, _ := wallet.GetDefaultAccount()
address, _ := account.ProgramHash.ToAddress()
resp, err := client.Call(Address(), "getnoncebyaddr", 0, map[string]interface{}{"address": address})
if err != nil {
fmt.Fprintln(os.Stderr, err)
return err
}
FormatOutput(resp)
case "id":
account, _ := wallet.GetDefaultAccount()
publicKey := account.PubKey().EncodePoint()
pk := hex.EncodeToString(publicKey)
resp, err := client.Call(Address(), "getid", 0, map[string]interface{}{"publickey": pk})
if err != nil {
fmt.Fprintln(os.Stderr, err)
return err
}
FormatOutput(resp)
}
}
return nil
}
// change password
if c.Bool("changepassword") {
fmt.Printf("Wallet File: '%s'\n", name)
passwd, _ := password.GetPassword()
wallet, err := vault.OpenWallet(name, passwd)
if err != nil {
os.Exit(1)
}
fmt.Println("# input new password #")
newPassword, _ := password.GetConfirmedPassword()
if ok := wallet.ChangePassword([]byte(passwd), newPassword); !ok {
fmt.Fprintln(os.Stderr, "failed to change password")
os.Exit(1)
}
fmt.Println("password changed")
return nil
}
return nil
}
func NewCommand() *cli.Command {
return &cli.Command{
Name: "wallet",
Usage: "user wallet operation",
Description: "With nknc wallet, you could control your asset.",
ArgsUsage: "[args]",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "create, c",
Usage: "create wallet",
},
cli.StringFlag{
Name: "list, l",
Usage: "list wallet information [account, balance, verbose, nonce]",
},
cli.BoolFlag{
Name: "changepassword",
Usage: "change wallet password",
},
cli.BoolFlag{
Name: "reset",
Usage: "reset wallet",
},
cli.StringFlag{
Name: "name, n",
Usage: "wallet name",
Value: config.Parameters.WalletFile,
},
cli.StringFlag{
Name: "password, p",
Usage: "wallet password",
},
},
Action: walletAction,
OnUsageError: func(c *cli.Context, err error, isSubcommand bool) error {
PrintError(c, err, "wallet")
return cli.NewExitError("", 1)
},
}
}