mirror of
https://github.com/wealdtech/ethdo.git
synced 2026-01-09 14:07:56 -05:00
135 lines
4.0 KiB
Go
135 lines
4.0 KiB
Go
// Copyright © 2019, 2020 Weald Technology Trading
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package walletcreate
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import (
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"context"
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"crypto/rand"
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"strings"
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"github.com/pkg/errors"
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bip39 "github.com/tyler-smith/go-bip39"
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"github.com/wealdtech/ethdo/util"
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distributed "github.com/wealdtech/go-eth2-wallet-distributed"
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keystorev4 "github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4"
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hd "github.com/wealdtech/go-eth2-wallet-hd/v2"
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nd "github.com/wealdtech/go-eth2-wallet-nd/v2"
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"golang.org/x/text/unicode/norm"
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)
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func process(ctx context.Context, data *dataIn) (*dataOut, error) {
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if data == nil {
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return nil, errors.New("no data")
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}
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switch data.walletType {
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case "nd", "non-deterministic":
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return processND(ctx, data)
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case "hd", "hierarchical deterministic":
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return processHD(ctx, data)
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case "distributed":
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return processDistributed(ctx, data)
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default:
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return nil, errors.New("wallet type not supported")
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}
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}
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func processND(ctx context.Context, data *dataIn) (*dataOut, error) {
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if data == nil {
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return nil, errors.New("no data")
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}
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results := &dataOut{}
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if _, err := nd.CreateWallet(ctx, data.walletName, data.store, keystorev4.New()); err != nil {
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return nil, err
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}
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return results, nil
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}
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func processHD(ctx context.Context, data *dataIn) (*dataOut, error) {
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if data == nil {
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return nil, errors.New("no data")
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}
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if data.passphrase == "" {
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return nil, errors.New("wallet passphrase is required for hierarchical deterministic wallets")
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}
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if !util.AcceptablePassphrase(data.passphrase) {
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return nil, errors.New("supplied passphrase is weak; use a stronger one or run with the --allow-weak-passphrases flag")
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}
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if data.quiet {
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return nil, errors.New("creation of hierarchical deterministic wallets prints its mnemonic, so cannot be run with the --quiet flag")
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}
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results := &dataOut{}
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// Only show the mnemonic on output if we generate it.
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printMnemonic := data.mnemonic == ""
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mnemonicPassphrase := ""
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if data.mnemonic == "" {
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// Create a new random mnemonic.
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entropy := make([]byte, 32)
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_, err := rand.Read(entropy)
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if err != nil {
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return nil, errors.Wrap(err, "failed to generate entropy for wallet mnemonic")
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}
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data.mnemonic, err = bip39.NewMnemonic(entropy)
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if err != nil {
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return nil, errors.Wrap(err, "failed to generate wallet mnemonic")
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}
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} else {
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// We have an existing mnemonic. If there are more than 24 words we treat the additional characters as the passphrase.
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mnemonicParts := strings.Split(data.mnemonic, " ")
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if len(mnemonicParts) > 24 {
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data.mnemonic = strings.Join(mnemonicParts[:24], " ")
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mnemonicPassphrase = strings.Join(mnemonicParts[24:], " ")
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}
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}
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// Normalise the input.
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data.mnemonic = string(norm.NFKD.Bytes([]byte(data.mnemonic)))
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mnemonicPassphrase = string(norm.NFKD.Bytes([]byte(mnemonicPassphrase)))
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// Ensure the mnemonic is valid
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if !bip39.IsMnemonicValid(data.mnemonic) {
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return nil, errors.New("mnemonic is not valid")
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}
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// Create seed from mnemonic and passphrase.
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seed := bip39.NewSeed(data.mnemonic, mnemonicPassphrase)
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if _, err := hd.CreateWallet(ctx, data.walletName, []byte(data.passphrase), data.store, keystorev4.New(), seed); err != nil {
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return nil, err
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}
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if printMnemonic {
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results.mnemonic = data.mnemonic
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}
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return results, nil
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}
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func processDistributed(ctx context.Context, data *dataIn) (*dataOut, error) {
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if data == nil {
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return nil, errors.New("no data")
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}
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results := &dataOut{}
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if _, err := distributed.CreateWallet(ctx, data.walletName, data.store, keystorev4.New()); err != nil {
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return nil, err
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}
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return results, nil
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}
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