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accounts, cmd, internal, node: implement HD wallet self-derivation

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This commit is contained in:
Péter Szilágyi 2017-02-08 20:25:52 +02:00
parent c5215fdd48
commit 205ea95802
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GPG Key ID: E9AE538CEDF8293D
9 changed files with 383 additions and 136 deletions
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15
accounts/accounts.go
View File

@ -20,6 +20,7 @@ package accounts
import (
"math/big"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/event"
@ -71,7 +72,19 @@ type Wallet interface {
// Derive attempts to explicitly derive a hierarchical deterministic account at
// the specified derivation path. If requested, the derived account will be added
// to the wallet's tracked account list.
Derive(path string, pin bool) (Account, error)
Derive(path DerivationPath, pin bool) (Account, error)
// SelfDerive sets a base account derivation path from which the wallet attempts
// to discover non zero accounts and automatically add them to list of tracked
// accounts.
//
// Note, self derivaton will increment the last component of the specified path
// opposed to decending into a child path to allow discovering accounts starting
// from non zero components.
//
// You can disable automatic account discovery by calling SelfDerive with a nil
// chain state reader.
SelfDerive(base DerivationPath, chain ethereum.ChainStateReader)
// SignHash requests the wallet to sign the given hash.
//

130
accounts/hd.go Normal file
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@ -0,0 +1,130 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package accounts
import (
"errors"
"fmt"
"math"
"math/big"
"strings"
)
// DefaultRootDerivationPath is the root path to which custom derivation endpoints
// are appended. As such, the first account will be at m/44'/60'/0'/0, the second
// at m/44'/60'/0'/1, etc.
var DefaultRootDerivationPath = DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0}
// DefaultBaseDerivationPath is the base path from which custom derivation endpoints
// are incremented. As such, the first account will be at m/44'/60'/0'/0, the second
// at m/44'/60'/0'/1, etc.
var DefaultBaseDerivationPath = DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}
// DerivationPath represents the computer friendly version of a hierarchical
// deterministic wallet account derivaion path.
//
// The BIP-32 spec https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki
// defines derivation paths to be of the form:
//
// m / purpose' / coin_type' / account' / change / address_index
//
// The BIP-44 spec https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki
// defines that the `purpose` be 44' (or 0x8000002C) for crypto currencies, and
// SLIP-44 https://github.com/satoshilabs/slips/blob/master/slip-0044.md assigns
// the `coin_type` 60' (or 0x8000003C) to Ethereum.
//
// The root path for Ethereum is m/44'/60'/0'/0 according to the specification
// from https://github.com/ethereum/EIPs/issues/84, albeit it's not set in stone
// yet whether accounts should increment the last component or the children of
// that. We will go with the simpler approach of incrementing the last component.
type DerivationPath []uint32
// ParseDerivationPath converts a user specified derivation path string to the
// internal binary representation.
//
// Full derivation paths need to start with the `m/` prefix, relative derivation
// paths (which will get appended to the default root path) must not have prefixes
// in front of the first element. Whitespace is ignored.
func ParseDerivationPath(path string) (DerivationPath, error) {
var result DerivationPath
// Handle absolute or relative paths
components := strings.Split(path, "/")
switch {
case len(components) == 0:
return nil, errors.New("empty derivation path")
case strings.TrimSpace(components[0]) == "":
return nil, errors.New("ambiguous path: use 'm/' prefix for absolute paths, or no leading '/' for relative ones")
case strings.TrimSpace(components[0]) == "m":
components = components[1:]
default:
result = append(result, DefaultRootDerivationPath...)
}
// All remaining components are relative, append one by one
if len(components) == 0 {
return nil, errors.New("empty derivation path") // Empty relative paths
}
for _, component := range components {
// Ignore any user added whitespace
component = strings.TrimSpace(component)
var value uint32
// Handle hardened paths
if strings.HasSuffix(component, "'") {
value = 0x80000000
component = strings.TrimSpace(strings.TrimSuffix(component, "'"))
}
// Handle the non hardened component
bigval, ok := new(big.Int).SetString(component, 0)
if !ok {
return nil, fmt.Errorf("invalid component: %s", component)
}
max := math.MaxUint32 - value
if bigval.Sign() < 0 || bigval.Cmp(big.NewInt(int64(max))) > 0 {
if value == 0 {
return nil, fmt.Errorf("component %v out of allowed range [0, %d]", bigval, max)
}
return nil, fmt.Errorf("component %v out of allowed hardened range [0, %d]", bigval, max)
}
value += uint32(bigval.Uint64())
// Append and repeat
result = append(result, value)
}
return result, nil
}
// String implements the stringer interface, converting a binary derivation path
// to its canonical representation.
func (path DerivationPath) String() string {
result := "m"
for _, component := range path {
var hardened bool
if component >= 0x80000000 {
component -= 0x80000000
hardened = true
}
result = fmt.Sprintf("%s/%d", result, component)
if hardened {
result += "'"
}
}
return result
}

79
accounts/hd_test.go Normal file
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@ -0,0 +1,79 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package accounts
import (
"reflect"
"testing"
)
// Tests that HD derivation paths can be correctly parsed into our internal binary
// representation.
func TestHDPathParsing(t *testing.T) {
tests := []struct {
input string
output DerivationPath
}{
// Plain absolute derivation paths
{"m/44'/60'/0'/0", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}},
{"m/44'/60'/0'/128", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 128}},
{"m/44'/60'/0'/0'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}},
{"m/44'/60'/0'/128'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 128}},
{"m/2147483692/2147483708/2147483648/0", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}},
{"m/2147483692/2147483708/2147483648/2147483648", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}},
// Plain relative derivation paths
{"0", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}},
{"128", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 128}},
{"0'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}},
{"128'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 128}},
{"2147483648", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}},
// Hexadecimal absolute derivation paths
{"m/0x2C'/0x3c'/0x00'/0x00", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}},
{"m/0x2C'/0x3c'/0x00'/0x80", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 128}},
{"m/0x2C'/0x3c'/0x00'/0x00'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}},
{"m/0x2C'/0x3c'/0x00'/0x80'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 128}},
{"m/0x8000002C/0x8000003c/0x80000000/0x00", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}},
{"m/0x8000002C/0x8000003c/0x80000000/0x80000000", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}},
// Hexadecimal relative derivation paths
{"0x00", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}},
{"0x80", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 128}},
{"0x00'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}},
{"0x80'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 128}},
{"0x80000000", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}},
// Weird inputs just to ensure they work
{" m / 44 '\n/\n 60 \n\n\t' /\n0 ' /\t\t 0", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}},
// Invaid derivation paths
{"", nil}, // Empty relative derivation path
{"m", nil}, // Empty absolute derivation path
{"m/", nil}, // Missing last derivation component
{"/44'/60'/0'/0", nil}, // Absolute path without m prefix, might be user error
{"m/2147483648'", nil}, // Overflows 32 bit integer
{"m/-1'", nil}, // Cannot contain negative number
}
for i, tt := range tests {
if path, err := ParseDerivationPath(tt.input); !reflect.DeepEqual(path, tt.output) {
t.Errorf("test %d: parse mismatch: have %v (%v), want %v", i, path, err, tt.output)
} else if path == nil && err == nil {
t.Errorf("test %d: nil path and error: %v", i, err)
}
}
}

7
accounts/keystore/keystore_wallet.go
View File

@ -19,6 +19,7 @@ package keystore
import (
"math/big"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/core/types"
)
@ -69,10 +70,14 @@ func (w *keystoreWallet) Contains(account accounts.Account) bool {
// Derive implements accounts.Wallet, but is a noop for plain wallets since there
// is no notion of hierarchical account derivation for plain keystore accounts.
func (w *keystoreWallet) Derive(path string, pin bool) (accounts.Account, error) {
func (w *keystoreWallet) Derive(path accounts.DerivationPath, pin bool) (accounts.Account, error) {
return accounts.Account{}, accounts.ErrNotSupported
}
// SelfDerive implements accounts.Wallet, but is a noop for plain wallets since
// there is no notion of hierarchical account derivation for plain keystore accounts.
func (w *keystoreWallet) SelfDerive(base accounts.DerivationPath, chain ethereum.ChainStateReader) {}
// SignHash implements accounts.Wallet, attempting to sign the given hash with
// the given account. If the wallet does not wrap this particular account, an
// error is returned to avoid account leakage (even though in theory we may be

77
accounts/usbwallet/ledger_test.go
View File

@ -1,77 +0,0 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// +build !ios
package usbwallet
/*
func TestLedgerHub(t *testing.T) {
glog.SetV(6)
glog.SetToStderr(true)
// Create a USB hub watching for Ledger devices
hub, err := NewLedgerHub()
if err != nil {
t.Fatalf("Failed to create Ledger hub: %v", err)
}
defer hub.Close()
// Wait for events :P
time.Sleep(time.Minute)
}
*/
/*
func TestLedger(t *testing.T) {
// Create a USB context to access devices through
ctx, err := usb.NewContext()
defer ctx.Close()
ctx.Debug(6)
// List all of the Ledger wallets
wallets, err := findLedgerWallets(ctx)
if err != nil {
t.Fatalf("Failed to list Ledger wallets: %v", err)
}
// Retrieve the address from every one of them
for _, wallet := range wallets {
// Retrieve the version of the wallet app
ver, err := wallet.Version()
if err != nil {
t.Fatalf("Failed to retrieve wallet version: %v", err)
}
fmt.Printf("Ledger version: %s\n", ver)
// Retrieve the address of the wallet
addr, err := wallet.Address()
if err != nil {
t.Fatalf("Failed to retrieve wallet address: %v", err)
}
fmt.Printf("Ledger address: %x\n", addr)
// Try to sign a transaction with the wallet
unsigned := types.NewTransaction(1, common.HexToAddress("0xbabababababababababababababababababababa"), common.Ether, big.NewInt(20000), common.Shannon, nil)
signed, err := wallet.Sign(unsigned)
if err != nil {
t.Fatalf("Failed to sign transactions: %v", err)
}
signer, err := types.Sender(types.NewEIP155Signer(big.NewInt(1)), signed)
if err != nil {
t.Fatalf("Failed to recover signer: %v", err)
}
fmt.Printf("Ledger signature by: %x\n", signer)
}
}*/

154
accounts/usbwallet/ledger_wallet.go
View File

@ -29,11 +29,10 @@ import (
"fmt"
"io"
"math/big"
"strconv"
"strings"
"sync"
"time"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
@ -41,10 +40,15 @@ import (
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/rlp"
"github.com/karalabe/gousb/usb"
"golang.org/x/net/context"
)
// ledgerDerivationPath is the base derivation parameters used by the wallet.
var ledgerDerivationPath = []uint32{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}
// Maximum time between wallet health checks to detect USB unplugs.
const ledgerHeartbeatCycle = time.Second
// Minimum time to wait between self derivation attempts, even it the user is
// requesting accounts like crazy.
const ledgerSelfDeriveThrottling = time.Second
// ledgerOpcode is an enumeration encoding the supported Ledger opcodes.
type ledgerOpcode byte
@ -82,9 +86,15 @@ type ledgerWallet struct {
output usb.Endpoint // Output endpoint to receive data from this device
failure error // Any failure that would make the device unusable
version [3]byte // Current version of the Ledger Ethereum app (zero if app is offline)
accounts []accounts.Account // List of derive accounts pinned on the Ledger
paths map[common.Address][]uint32 // Known derivation paths for signing operations
version [3]byte // Current version of the Ledger Ethereum app (zero if app is offline)
accounts []accounts.Account // List of derive accounts pinned on the Ledger
paths map[common.Address]accounts.DerivationPath // Known derivation paths for signing operations
selfDeriveNextPath accounts.DerivationPath // Next derivation path for account auto-discovery
selfDeriveNextAddr common.Address // Next derived account address for auto-discovery
selfDerivePrevZero common.Address // Last zero-address where auto-discovery stopped
selfDeriveChain ethereum.ChainStateReader // Blockchain state reader to discover used account with
selfDeriveTime time.Time // Timestamp of the last self-derivation to avoid thrashing
quit chan chan error
lock sync.RWMutex
@ -107,12 +117,17 @@ func (w *ledgerWallet) Status() string {
if w.device == nil {
return "Closed"
}
if w.version == [3]byte{0, 0, 0} {
if w.offline() {
return "Ethereum app offline"
}
return fmt.Sprintf("Ethereum app v%d.%d.%d online", w.version[0], w.version[1], w.version[2])
}
// offline returns whether the wallet and the Ethereum app is offline or not.
func (w *ledgerWallet) offline() bool {
return w.version == [3]byte{0, 0, 0}
}
// Open implements accounts.Wallet, attempting to open a USB connection to the
// Ledger hardware wallet. The Ledger does not require a user passphrase so that
// is silently discarded.
@ -176,13 +191,13 @@ func (w *ledgerWallet) Open(passphrase string) error {
// Wallet seems to be successfully opened, guess if the Ethereum app is running
w.device, w.input, w.output = device, input, output
w.paths = make(map[common.Address][]uint32)
w.paths = make(map[common.Address]accounts.DerivationPath)
w.quit = make(chan chan error)
defer func() {
go w.heartbeat()
}()
if _, err := w.deriveAddress(ledgerDerivationPath); err != nil {
if _, err := w.deriveAddress(accounts.DefaultBaseDerivationPath); err != nil {
// Ethereum app is not running, nothing more to do, return
return nil
}
@ -209,7 +224,7 @@ func (w *ledgerWallet) heartbeat() {
case errc = <-w.quit:
// Termination requested
continue
case <-time.After(time.Second):
case <-time.After(ledgerHeartbeatCycle):
// Heartbeat time
}
// Execute a tiny data exchange to see responsiveness
@ -242,16 +257,86 @@ func (w *ledgerWallet) Close() error {
return err
}
w.device, w.input, w.output, w.paths, w.quit = nil, nil, nil, nil, nil
w.version = [3]byte{}
return herr // If all went well, return any health-check errors
}
// Accounts implements accounts.Wallet, returning the list of accounts pinned to
// the Ledger hardware wallet.
// the Ledger hardware wallet. If self derivation was enabled, the account list
// is periodically expanded based on current chain state.
func (w *ledgerWallet) Accounts() []accounts.Account {
w.lock.RLock()
defer w.lock.RUnlock()
w.lock.Lock()
defer w.lock.Unlock()
// If the wallet is offline, there are no accounts to return
if w.offline() {
return nil
}
// If no self derivation is done (or throttled), return the current accounts
if w.selfDeriveChain == nil || time.Since(w.selfDeriveTime) < ledgerSelfDeriveThrottling {
cpy := make([]accounts.Account, len(w.accounts))
copy(cpy, w.accounts)
return cpy
}
// Self derivation requested, try to expand our account list
ctx := context.Background()
for empty := false; !empty; {
// Retrieve the next derived Ethereum account
var err error
if w.selfDeriveNextAddr == (common.Address{}) {
w.selfDeriveNextAddr, err = w.deriveAddress(w.selfDeriveNextPath)
if err != nil {
// Derivation failed, disable auto discovery
glog.V(logger.Warn).Infof("self-derivation failed: %v", err)
w.selfDeriveChain = nil
break
}
}
// Check the account's status against the current chain state
balance, err := w.selfDeriveChain.BalanceAt(ctx, w.selfDeriveNextAddr, nil)
if err != nil {
glog.V(logger.Warn).Infof("self-derivation balance retrieval failed: %v", err)
w.selfDeriveChain = nil
break
}
nonce, err := w.selfDeriveChain.NonceAt(ctx, w.selfDeriveNextAddr, nil)
if err != nil {
glog.V(logger.Warn).Infof("self-derivation nonce retrieval failed: %v", err)
w.selfDeriveChain = nil
break
}
// If the next account is empty, stop self-derivation, but add it nonetheless
if balance.BitLen() == 0 && nonce == 0 {
w.selfDerivePrevZero = w.selfDeriveNextAddr
empty = true
}
// We've just self-derived a new non-zero account, start tracking it
path := make(accounts.DerivationPath, len(w.selfDeriveNextPath))
copy(path[:], w.selfDeriveNextPath[:])
account := accounts.Account{
Address: w.selfDeriveNextAddr,
URL: accounts.URL{Scheme: w.url.Scheme, Path: fmt.Sprintf("%s/%s", w.url.Path, path)},
}
_, known := w.paths[w.selfDeriveNextAddr]
if !known || (!empty && w.selfDeriveNextAddr == w.selfDerivePrevZero) {
// Either fully new account, or previous zero. Report discovery either way
glog.V(logger.Info).Infof("%s discovered %s (balance %d, nonce %d) at %s", w.url.String(), w.selfDeriveNextAddr.Hex(), balance, nonce, path)
}
if !known {
w.accounts = append(w.accounts, account)
w.paths[w.selfDeriveNextAddr] = path
}
// Fetch the next potential account
if !empty {
w.selfDeriveNextAddr = common.Address{}
w.selfDeriveNextPath[len(w.selfDeriveNextPath)-1]++
}
}
w.selfDeriveTime = time.Now()
// Return whatever account list we ended up with
cpy := make([]accounts.Account, len(w.accounts))
copy(cpy, w.accounts)
return cpy
@ -271,34 +356,16 @@ func (w *ledgerWallet) Contains(account accounts.Account) bool {
// Derive implements accounts.Wallet, deriving a new account at the specific
// derivation path. If pin is set to true, the account will be added to the list
// of tracked accounts.
func (w *ledgerWallet) Derive(path string, pin bool) (accounts.Account, error) {
func (w *ledgerWallet) Derive(path accounts.DerivationPath, pin bool) (accounts.Account, error) {
w.lock.Lock()
defer w.lock.Unlock()
// If the wallet is closed, or the Ethereum app doesn't run, abort
if w.device == nil || w.version == [3]byte{0, 0, 0} {
if w.device == nil || w.offline() {
return accounts.Account{}, accounts.ErrWalletClosed
}
// All seems fine, convert the user derivation path to Ledger representation
path = strings.TrimPrefix(path, "/")
parts := strings.Split(path, "/")
lpath := make([]uint32, len(parts))
for i, part := range parts {
// Handle hardened paths
if strings.HasSuffix(part, "'") {
lpath[i] = 0x80000000
part = strings.TrimSuffix(part, "'")
}
// Handle the non hardened component
val, err := strconv.Atoi(part)
if err != nil {
return accounts.Account{}, fmt.Errorf("path element %d: %v", i, err)
}
lpath[i] += uint32(val)
}
// Try to derive the actual account and update it's URL if succeeful
address, err := w.deriveAddress(lpath)
address, err := w.deriveAddress(path)
if err != nil {
return accounts.Account{}, err
}
@ -310,12 +377,27 @@ func (w *ledgerWallet) Derive(path string, pin bool) (accounts.Account, error) {
if pin {
if _, ok := w.paths[address]; !ok {
w.accounts = append(w.accounts, account)
w.paths[address] = lpath
w.paths[address] = path
}
}
return account, nil
}
// SelfDerive implements accounts.Wallet, trying to discover accounts that the
// user used previously (based on the chain state), but ones that he/she did not
// explicitly pin to the wallet manually. To avoid chain head monitoring, self
// derivation only runs during account listing (and even then throttled).
func (w *ledgerWallet) SelfDerive(base accounts.DerivationPath, chain ethereum.ChainStateReader) {
w.lock.Lock()
defer w.lock.Unlock()
w.selfDeriveNextPath = make(accounts.DerivationPath, len(base))
copy(w.selfDeriveNextPath[:], base[:])
w.selfDeriveNextAddr = common.Address{}
w.selfDeriveChain = chain
}
// SignHash implements accounts.Wallet, however signing arbitrary data is not
// supported for Ledger wallets, so this method will always return an error.
func (w *ledgerWallet) SignHash(acc accounts.Account, hash []byte) ([]byte, error) {

32
cmd/geth/main.go
View File

@ -25,12 +25,14 @@ import (
"strings"
"time"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/keystore"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/console"
"github.com/ethereum/go-ethereum/contracts/release"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/internal/debug"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
@ -249,12 +251,38 @@ func startNode(ctx *cli.Context, stack *node.Node) {
ks := stack.AccountManager().Backends(keystore.KeyStoreType)[0].(*keystore.KeyStore)
passwords := utils.MakePasswordList(ctx)
accounts := strings.Split(ctx.GlobalString(utils.UnlockedAccountFlag.Name), ",")
for i, account := range accounts {
unlocks := strings.Split(ctx.GlobalString(utils.UnlockedAccountFlag.Name), ",")
for i, account := range unlocks {
if trimmed := strings.TrimSpace(account); trimmed != "" {
unlockAccount(ctx, ks, trimmed, i, passwords)
}
}
// Register wallet event handlers to open and auto-derive wallets
events := make(chan accounts.WalletEvent, 16)
stack.AccountManager().Subscribe(events)
go func() {
// Create an chain state reader for self-derivation
rpcClient, err := stack.Attach()
if err != nil {
utils.Fatalf("Failed to attach to self: %v", err)
}
stateReader := ethclient.NewClient(rpcClient)
// Listen for wallet event till termination
for event := range events {
if event.Arrive {
if err := event.Wallet.Open(""); err != nil {
glog.V(logger.Info).Infof("New wallet appeared: %s, failed to open: %s", event.Wallet.URL(), err)
} else {
glog.V(logger.Info).Infof("New wallet appeared: %s, %s", event.Wallet.URL(), event.Wallet.Status())
}
event.Wallet.SelfDerive(accounts.DefaultBaseDerivationPath, stateReader)
} else {
glog.V(logger.Info).Infof("Old wallet dropped: %s", event.Wallet.URL())
}
}
}()
// Start auxiliary services if enabled
if ctx.GlobalBool(utils.MiningEnabledFlag.Name) {
var ethereum *eth.Ethereum

6
internal/ethapi/api.go
View File

@ -253,10 +253,14 @@ func (s *PrivateAccountAPI) DeriveAccount(url string, path string, pin *bool) (a
if err != nil {
return accounts.Account{}, err
}
derivPath, err := accounts.ParseDerivationPath(path)
if err != nil {
return accounts.Account{}, err
}
if pin == nil {
pin = new(bool)
}
return wallet.Derive(path, *pin)
return wallet.Derive(derivPath, *pin)
}
// NewAccount will create a new account and returns the address for the new account.

19
node/config.go
View File

@ -446,22 +446,5 @@ func makeAccountManager(conf *Config) (*accounts.Manager, string, error) {
} else {
backends = append(backends, ledgerhub)
}
am := accounts.NewManager(backends...)
// Start some logging for the user
changes := make(chan accounts.WalletEvent, 16)
am.Subscribe(changes)
go func() {
for event := range changes {
if event.Arrive {
glog.V(logger.Info).Infof("New wallet appeared: %s", event.Wallet.URL())
if err := event.Wallet.Open(""); err != nil {
glog.V(logger.Warn).Infof("Failed to open wallet %s: %v", event.Wallet.URL(), err)
}
} else {
glog.V(logger.Info).Infof("Old wallet disappeared: %s", event.Wallet.URL())
}
}
}()
return am, ephemeral, nil
return accounts.NewManager(backends...), ephemeral, nil
}