328 lines
11 KiB
Go
328 lines
11 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"fmt"
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"io/ioutil"
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"github.com/ethereum/go-ethereum/accounts"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/console"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"gopkg.in/urfave/cli.v1"
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)
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var (
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walletCommand = cli.Command{
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Name: "wallet",
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Usage: "ethereum presale wallet",
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Subcommands: []cli.Command{
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{
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Action: importWallet,
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Name: "import",
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Usage: "import ethereum presale wallet",
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},
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},
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Description: `
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get wallet import /path/to/my/presale.wallet
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will prompt for your password and imports your ether presale account.
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It can be used non-interactively with the --password option taking a
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passwordfile as argument containing the wallet password in plaintext.
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`}
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accountCommand = cli.Command{
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Action: accountList,
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Name: "account",
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Usage: "manage accounts",
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Description: `
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Manage accounts lets you create new accounts, list all existing accounts,
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import a private key into a new account.
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' help' shows a list of subcommands or help for one subcommand.
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It supports interactive mode, when you are prompted for password as well as
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non-interactive mode where passwords are supplied via a given password file.
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Non-interactive mode is only meant for scripted use on test networks or known
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safe environments.
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Make sure you remember the password you gave when creating a new account (with
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either new or import). Without it you are not able to unlock your account.
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Note that exporting your key in unencrypted format is NOT supported.
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Keys are stored under <DATADIR>/keystore.
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It is safe to transfer the entire directory or the individual keys therein
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between ethereum nodes by simply copying.
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Make sure you backup your keys regularly.
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In order to use your account to send transactions, you need to unlock them using
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the '--unlock' option. The argument is a space separated list of addresses or
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indexes. If used non-interactively with a passwordfile, the file should contain
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the respective passwords one per line. If you unlock n accounts and the password
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file contains less than n entries, then the last password is meant to apply to
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all remaining accounts.
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And finally. DO NOT FORGET YOUR PASSWORD.
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`,
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Subcommands: []cli.Command{
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{
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Action: accountList,
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Name: "list",
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Usage: "print account addresses",
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},
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{
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Action: accountCreate,
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Name: "new",
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Usage: "create a new account",
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Description: `
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ethereum account new
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Creates a new account. Prints the address.
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The account is saved in encrypted format, you are prompted for a passphrase.
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You must remember this passphrase to unlock your account in the future.
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For non-interactive use the passphrase can be specified with the --password flag:
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ethereum --password <passwordfile> account new
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Note, this is meant to be used for testing only, it is a bad idea to save your
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password to file or expose in any other way.
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`,
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},
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{
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Action: accountUpdate,
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Name: "update",
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Usage: "update an existing account",
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Description: `
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ethereum account update <address>
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Update an existing account.
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The account is saved in the newest version in encrypted format, you are prompted
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for a passphrase to unlock the account and another to save the updated file.
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This same command can therefore be used to migrate an account of a deprecated
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format to the newest format or change the password for an account.
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For non-interactive use the passphrase can be specified with the --password flag:
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ethereum --password <passwordfile> account update <address>
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Since only one password can be given, only format update can be performed,
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changing your password is only possible interactively.
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`,
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},
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{
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Action: accountImport,
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Name: "import",
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Usage: "import a private key into a new account",
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Description: `
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ethereum account import <keyfile>
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Imports an unencrypted private key from <keyfile> and creates a new account.
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Prints the address.
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The keyfile is assumed to contain an unencrypted private key in hexadecimal format.
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The account is saved in encrypted format, you are prompted for a passphrase.
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You must remember this passphrase to unlock your account in the future.
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For non-interactive use the passphrase can be specified with the -password flag:
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ethereum --password <passwordfile> account import <keyfile>
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Note:
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As you can directly copy your encrypted accounts to another ethereum instance,
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this import mechanism is not needed when you transfer an account between
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nodes.
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`,
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},
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},
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}
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)
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func accountList(ctx *cli.Context) error {
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stack := utils.MakeNode(ctx, clientIdentifier, gitCommit)
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for i, acct := range stack.AccountManager().Accounts() {
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fmt.Printf("Account #%d: {%x} %s\n", i, acct.Address, acct.File)
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}
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return nil
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}
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// tries unlocking the specified account a few times.
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func unlockAccount(ctx *cli.Context, accman *accounts.Manager, address string, i int, passwords []string) (accounts.Account, string) {
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account, err := utils.MakeAddress(accman, address)
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if err != nil {
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utils.Fatalf("Could not list accounts: %v", err)
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}
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for trials := 0; trials < 3; trials++ {
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prompt := fmt.Sprintf("Unlocking account %s | Attempt %d/%d", address, trials+1, 3)
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password := getPassPhrase(prompt, false, i, passwords)
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err = accman.Unlock(account, password)
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if err == nil {
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glog.V(logger.Info).Infof("Unlocked account %x", account.Address)
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return account, password
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}
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if err, ok := err.(*accounts.AmbiguousAddrError); ok {
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glog.V(logger.Info).Infof("Unlocked account %x", account.Address)
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return ambiguousAddrRecovery(accman, err, password), password
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}
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if err != accounts.ErrDecrypt {
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// No need to prompt again if the error is not decryption-related.
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break
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}
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}
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// All trials expended to unlock account, bail out
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utils.Fatalf("Failed to unlock account %s (%v)", address, err)
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return accounts.Account{}, ""
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}
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// getPassPhrase retrieves the passwor associated with an account, either fetched
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// from a list of preloaded passphrases, or requested interactively from the user.
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func getPassPhrase(prompt string, confirmation bool, i int, passwords []string) string {
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// If a list of passwords was supplied, retrieve from them
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if len(passwords) > 0 {
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if i < len(passwords) {
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return passwords[i]
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}
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return passwords[len(passwords)-1]
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}
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// Otherwise prompt the user for the password
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if prompt != "" {
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fmt.Println(prompt)
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}
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password, err := console.Stdin.PromptPassword("Passphrase: ")
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if err != nil {
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utils.Fatalf("Failed to read passphrase: %v", err)
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}
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if confirmation {
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confirm, err := console.Stdin.PromptPassword("Repeat passphrase: ")
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if err != nil {
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utils.Fatalf("Failed to read passphrase confirmation: %v", err)
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}
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if password != confirm {
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utils.Fatalf("Passphrases do not match")
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}
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}
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return password
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}
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func ambiguousAddrRecovery(am *accounts.Manager, err *accounts.AmbiguousAddrError, auth string) accounts.Account {
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fmt.Printf("Multiple key files exist for address %x:\n", err.Addr)
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for _, a := range err.Matches {
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fmt.Println(" ", a.File)
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}
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fmt.Println("Testing your passphrase against all of them...")
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var match *accounts.Account
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for _, a := range err.Matches {
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if err := am.Unlock(a, auth); err == nil {
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match = &a
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break
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}
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}
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if match == nil {
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utils.Fatalf("None of the listed files could be unlocked.")
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}
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fmt.Printf("Your passphrase unlocked %s\n", match.File)
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fmt.Println("In order to avoid this warning, you need to remove the following duplicate key files:")
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for _, a := range err.Matches {
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if a != *match {
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fmt.Println(" ", a.File)
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}
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}
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return *match
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}
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// accountCreate creates a new account into the keystore defined by the CLI flags.
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func accountCreate(ctx *cli.Context) error {
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stack := utils.MakeNode(ctx, clientIdentifier, gitCommit)
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password := getPassPhrase("Your new account is locked with a password. Please give a password. Do not forget this password.", true, 0, utils.MakePasswordList(ctx))
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account, err := stack.AccountManager().NewAccount(password)
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if err != nil {
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utils.Fatalf("Failed to create account: %v", err)
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}
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fmt.Printf("Address: {%x}\n", account.Address)
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return nil
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}
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// accountUpdate transitions an account from a previous format to the current
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// one, also providing the possibility to change the pass-phrase.
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func accountUpdate(ctx *cli.Context) error {
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if len(ctx.Args()) == 0 {
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utils.Fatalf("No accounts specified to update")
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}
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stack := utils.MakeNode(ctx, clientIdentifier, gitCommit)
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account, oldPassword := unlockAccount(ctx, stack.AccountManager(), ctx.Args().First(), 0, nil)
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newPassword := getPassPhrase("Please give a new password. Do not forget this password.", true, 0, nil)
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if err := stack.AccountManager().Update(account, oldPassword, newPassword); err != nil {
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utils.Fatalf("Could not update the account: %v", err)
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}
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return nil
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}
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func importWallet(ctx *cli.Context) error {
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keyfile := ctx.Args().First()
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if len(keyfile) == 0 {
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utils.Fatalf("keyfile must be given as argument")
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}
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keyJson, err := ioutil.ReadFile(keyfile)
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if err != nil {
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utils.Fatalf("Could not read wallet file: %v", err)
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}
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stack := utils.MakeNode(ctx, clientIdentifier, gitCommit)
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passphrase := getPassPhrase("", false, 0, utils.MakePasswordList(ctx))
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acct, err := stack.AccountManager().ImportPreSaleKey(keyJson, passphrase)
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if err != nil {
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utils.Fatalf("%v", err)
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}
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fmt.Printf("Address: {%x}\n", acct.Address)
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return nil
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}
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func accountImport(ctx *cli.Context) error {
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keyfile := ctx.Args().First()
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if len(keyfile) == 0 {
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utils.Fatalf("keyfile must be given as argument")
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}
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key, err := crypto.LoadECDSA(keyfile)
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if err != nil {
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utils.Fatalf("Failed to load the private key: %v", err)
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}
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stack := utils.MakeNode(ctx, clientIdentifier, gitCommit)
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passphrase := getPassPhrase("Your new account is locked with a password. Please give a password. Do not forget this password.", true, 0, utils.MakePasswordList(ctx))
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acct, err := stack.AccountManager().ImportECDSA(key, passphrase)
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if err != nil {
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utils.Fatalf("Could not create the account: %v", err)
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}
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fmt.Printf("Address: {%x}\n", acct.Address)
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return nil
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}
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