frostfs-s3-gw/internal/wallet/wallet.go

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package wallet
import (
"fmt"
"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/cli/input"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/spf13/viper"
)
// GetPassword gets the passphrase for a wallet.
func GetPassword(v *viper.Viper, variable string) *string {
var password *string
if v.IsSet(variable) {
pwd := v.GetString(variable)
password = &pwd
}
return password
}
// GetKeyFromPath reads a wallet and gets the private key.
func GetKeyFromPath(walletPath, addrStr string, password *string) (*keys.PrivateKey, error) {
if len(walletPath) == 0 {
return nil, fmt.Errorf("wallet path must not be empty")
}
w, err := wallet.NewWalletFromFile(walletPath)
if err != nil {
return nil, fmt.Errorf("parse wallet: %w", err)
}
var addr util.Uint160
if len(addrStr) == 0 {
addr = w.GetChangeAddress()
} else {
addr, err = flags.ParseAddress(addrStr)
if err != nil {
return nil, fmt.Errorf("invalid address")
}
}
acc := w.GetAccount(addr)
if acc == nil {
return nil, fmt.Errorf("couldn't find wallet account for %s", addrStr)
}
if password == nil {
pwd, err := input.ReadPassword(fmt.Sprintf("Enter password for %s > ", walletPath))
if err != nil {
return nil, fmt.Errorf("couldn't read password")
}
password = &pwd
}
if err := acc.Decrypt(*password, w.Scrypt); err != nil {
return nil, fmt.Errorf("couldn't decrypt account: %w", err)
}
return acc.PrivateKey(), nil
}