...

1 files changed, 0 insertions, 365 deletions

diff --git a/accounts/usbwallet/trezor.go b/accounts/usbwallet/trezor.go
deleted file mode 100644
index 833c7a9..0000000
--- a/accounts/usbwallet/trezor.go
+++ /dev/null
@@ -1,365 +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/>.
-
-// This file contains the implementation for interacting with the Trezor hardware
-// wallets. The wire protocol spec can be found on the SatoshiLabs website:
-// https://doc.satoshilabs.com/trezor-tech/api-protobuf.html
-
-package usbwallet
-
-import (
-	"encoding/binary"
-	"errors"
-	"fmt"
-	"io"
-	"math/big"
-
-	"github.com/ava-labs/coreth/accounts"
-	"github.com/ava-labs/coreth/accounts/usbwallet/trezor"
-	"github.com/ava-labs/coreth/core/types"
-	"github.com/ava-labs/go-ethereum/common"
-	"github.com/ava-labs/go-ethereum/common/hexutil"
-	"github.com/ava-labs/go-ethereum/log"
-	"github.com/golang/protobuf/proto"
-)
-
-// ErrTrezorPINNeeded is returned if opening the trezor requires a PIN code. In
-// this case, the calling application should display a pinpad and send back the
-// encoded passphrase.
-var ErrTrezorPINNeeded = errors.New("trezor: pin needed")
-
-// ErrTrezorPassphraseNeeded is returned if opening the trezor requires a passphrase
-var ErrTrezorPassphraseNeeded = errors.New("trezor: passphrase needed")
-
-// errTrezorReplyInvalidHeader is the error message returned by a Trezor data exchange
-// if the device replies with a mismatching header. This usually means the device
-// is in browser mode.
-var errTrezorReplyInvalidHeader = errors.New("trezor: invalid reply header")
-
-// trezorDriver implements the communication with a Trezor hardware wallet.
-type trezorDriver struct {
-	device         io.ReadWriter // USB device connection to communicate through
-	version        [3]uint32     // Current version of the Trezor firmware
-	label          string        // Current textual label of the Trezor device
-	pinwait        bool          // Flags whether the device is waiting for PIN entry
-	passphrasewait bool          // Flags whether the device is waiting for passphrase entry
-	failure        error         // Any failure that would make the device unusable
-	log            log.Logger    // Contextual logger to tag the trezor with its id
-}
-
-// newTrezorDriver creates a new instance of a Trezor USB protocol driver.
-func newTrezorDriver(logger log.Logger) driver {
-	return &trezorDriver{
-		log: logger,
-	}
-}
-
-// Status implements accounts.Wallet, always whether the Trezor is opened, closed
-// or whether the Ethereum app was not started on it.
-func (w *trezorDriver) Status() (string, error) {
-	if w.failure != nil {
-		return fmt.Sprintf("Failed: %v", w.failure), w.failure
-	}
-	if w.device == nil {
-		return "Closed", w.failure
-	}
-	if w.pinwait {
-		return fmt.Sprintf("Trezor v%d.%d.%d '%s' waiting for PIN", w.version[0], w.version[1], w.version[2], w.label), w.failure
-	}
-	return fmt.Sprintf("Trezor v%d.%d.%d '%s' online", w.version[0], w.version[1], w.version[2], w.label), w.failure
-}
-
-// Open implements usbwallet.driver, attempting to initialize the connection to
-// the Trezor hardware wallet. Initializing the Trezor is a two or three phase operation:
-//  * The first phase is to initialize the connection and read the wallet's
-//    features. This phase is invoked if the provided passphrase is empty. The
-//    device will display the pinpad as a result and will return an appropriate
-//    error to notify the user that a second open phase is needed.
-//  * The second phase is to unlock access to the Trezor, which is done by the
-//    user actually providing a passphrase mapping a keyboard keypad to the pin
-//    number of the user (shuffled according to the pinpad displayed).
-//  * If needed the device will ask for passphrase which will require calling
-//    open again with the actual passphrase (3rd phase)
-func (w *trezorDriver) Open(device io.ReadWriter, passphrase string) error {
-	w.device, w.failure = device, nil
-
-	// If phase 1 is requested, init the connection and wait for user callback
-	if passphrase == "" && !w.passphrasewait {
-		// If we're already waiting for a PIN entry, insta-return
-		if w.pinwait {
-			return ErrTrezorPINNeeded
-		}
-		// Initialize a connection to the device
-		features := new(trezor.Features)
-		if _, err := w.trezorExchange(&trezor.Initialize{}, features); err != nil {
-			return err
-		}
-		w.version = [3]uint32{features.GetMajorVersion(), features.GetMinorVersion(), features.GetPatchVersion()}
-		w.label = features.GetLabel()
-
-		// Do a manual ping, forcing the device to ask for its PIN and Passphrase
-		askPin := true
-		askPassphrase := true
-		res, err := w.trezorExchange(&trezor.Ping{PinProtection: &askPin, PassphraseProtection: &askPassphrase}, new(trezor.PinMatrixRequest), new(trezor.PassphraseRequest), new(trezor.Success))
-		if err != nil {
-			return err
-		}
-		// Only return the PIN request if the device wasn't unlocked until now
-		switch res {
-		case 0:
-			w.pinwait = true
-			return ErrTrezorPINNeeded
-		case 1:
-			w.pinwait = false
-			w.passphrasewait = true
-			return ErrTrezorPassphraseNeeded
-		case 2:
-			return nil // responded with trezor.Success
-		}
-	}
-	// Phase 2 requested with actual PIN entry
-	if w.pinwait {
-		w.pinwait = false
-		res, err := w.trezorExchange(&trezor.PinMatrixAck{Pin: &passphrase}, new(trezor.Success), new(trezor.PassphraseRequest))
-		if err != nil {
-			w.failure = err
-			return err
-		}
-		if res == 1 {
-			w.passphrasewait = true
-			return ErrTrezorPassphraseNeeded
-		}
-	} else if w.passphrasewait {
-		w.passphrasewait = false
-		if _, err := w.trezorExchange(&trezor.PassphraseAck{Passphrase: &passphrase}, new(trezor.Success)); err != nil {
-			w.failure = err
-			return err
-		}
-	}
-
-	return nil
-}
-
-// Close implements usbwallet.driver, cleaning up and metadata maintained within
-// the Trezor driver.
-func (w *trezorDriver) Close() error {
-	w.version, w.label, w.pinwait = [3]uint32{}, "", false
-	return nil
-}
-
-// Heartbeat implements usbwallet.driver, performing a sanity check against the
-// Trezor to see if it's still online.
-func (w *trezorDriver) Heartbeat() error {
-	if _, err := w.trezorExchange(&trezor.Ping{}, new(trezor.Success)); err != nil {
-		w.failure = err
-		return err
-	}
-	return nil
-}
-
-// Derive implements usbwallet.driver, sending a derivation request to the Trezor
-// and returning the Ethereum address located on that derivation path.
-func (w *trezorDriver) Derive(path accounts.DerivationPath) (common.Address, error) {
-	return w.trezorDerive(path)
-}
-
-// SignTx implements usbwallet.driver, sending the transaction to the Trezor and
-// waiting for the user to confirm or deny the transaction.
-func (w *trezorDriver) SignTx(path accounts.DerivationPath, tx *types.Transaction, chainID *big.Int) (common.Address, *types.Transaction, error) {
-	if w.device == nil {
-		return common.Address{}, nil, accounts.ErrWalletClosed
-	}
-	return w.trezorSign(path, tx, chainID)
-}
-
-// trezorDerive sends a derivation request to the Trezor device and returns the
-// Ethereum address located on that path.
-func (w *trezorDriver) trezorDerive(derivationPath []uint32) (common.Address, error) {
-	address := new(trezor.EthereumAddress)
-	if _, err := w.trezorExchange(&trezor.EthereumGetAddress{AddressN: derivationPath}, address); err != nil {
-		return common.Address{}, err
-	}
-	if addr := address.GetAddressBin(); len(addr) > 0 { // Older firmwares use binary fomats
-		return common.BytesToAddress(addr), nil
-	}
-	if addr := address.GetAddressHex(); len(addr) > 0 { // Newer firmwares use hexadecimal fomats
-		return common.HexToAddress(addr), nil
-	}
-	return common.Address{}, errors.New("missing derived address")
-}
-
-// trezorSign sends the transaction to the Trezor wallet, and waits for the user
-// to confirm or deny the transaction.
-func (w *trezorDriver) trezorSign(derivationPath []uint32, tx *types.Transaction, chainID *big.Int) (common.Address, *types.Transaction, error) {
-	// Create the transaction initiation message
-	data := tx.Data()
-	length := uint32(len(data))
-
-	request := &trezor.EthereumSignTx{
-		AddressN:   derivationPath,
-		Nonce:      new(big.Int).SetUint64(tx.Nonce()).Bytes(),
-		GasPrice:   tx.GasPrice().Bytes(),
-		GasLimit:   new(big.Int).SetUint64(tx.Gas()).Bytes(),
-		Value:      tx.Value().Bytes(),
-		DataLength: &length,
-	}
-	if to := tx.To(); to != nil {
-		// Non contract deploy, set recipient explicitly
-		hex := to.Hex()
-		request.ToHex = &hex     // Newer firmwares (old will ignore)
-		request.ToBin = (*to)[:] // Older firmwares (new will ignore)
-	}
-	if length > 1024 { // Send the data chunked if that was requested
-		request.DataInitialChunk, data = data[:1024], data[1024:]
-	} else {
-		request.DataInitialChunk, data = data, nil
-	}
-	if chainID != nil { // EIP-155 transaction, set chain ID explicitly (only 32 bit is supported!?)
-		id := uint32(chainID.Int64())
-		request.ChainId = &id
-	}
-	// Send the initiation message and stream content until a signature is returned
-	response := new(trezor.EthereumTxRequest)
-	if _, err := w.trezorExchange(request, response); err != nil {
-		return common.Address{}, nil, err
-	}
-	for response.DataLength != nil && int(*response.DataLength) <= len(data) {
-		chunk := data[:*response.DataLength]
-		data = data[*response.DataLength:]
-
-		if _, err := w.trezorExchange(&trezor.EthereumTxAck{DataChunk: chunk}, response); err != nil {
-			return common.Address{}, nil, err
-		}
-	}
-	// Extract the Ethereum signature and do a sanity validation
-	if len(response.GetSignatureR()) == 0 || len(response.GetSignatureS()) == 0 || response.GetSignatureV() == 0 {
-		return common.Address{}, nil, errors.New("reply lacks signature")
-	}
-	signature := append(append(response.GetSignatureR(), response.GetSignatureS()...), byte(response.GetSignatureV()))
-
-	// Create the correct signer and signature transform based on the chain ID
-	var signer types.Signer
-	if chainID == nil {
-		signer = new(types.HomesteadSigner)
-	} else {
-		signer = types.NewEIP155Signer(chainID)
-		signature[64] -= byte(chainID.Uint64()*2 + 35)
-	}
-	// Inject the final signature into the transaction and sanity check the sender
-	signed, err := tx.WithSignature(signer, signature)
-	if err != nil {
-		return common.Address{}, nil, err
-	}
-	sender, err := types.Sender(signer, signed)
-	if err != nil {
-		return common.Address{}, nil, err
-	}
-	return sender, signed, nil
-}
-
-// trezorExchange performs a data exchange with the Trezor wallet, sending it a
-// message and retrieving the response. If multiple responses are possible, the
-// method will also return the index of the destination object used.
-func (w *trezorDriver) trezorExchange(req proto.Message, results ...proto.Message) (int, error) {
-	// Construct the original message payload to chunk up
-	data, err := proto.Marshal(req)
-	if err != nil {
-		return 0, err
-	}
-	payload := make([]byte, 8+len(data))
-	copy(payload, []byte{0x23, 0x23})
-	binary.BigEndian.PutUint16(payload[2:], trezor.Type(req))
-	binary.BigEndian.PutUint32(payload[4:], uint32(len(data)))
-	copy(payload[8:], data)
-
-	// Stream all the chunks to the device
-	chunk := make([]byte, 64)
-	chunk[0] = 0x3f // Report ID magic number
-
-	for len(payload) > 0 {
-		// Construct the new message to stream, padding with zeroes if needed
-		if len(payload) > 63 {
-			copy(chunk[1:], payload[:63])
-			payload = payload[63:]
-		} else {
-			copy(chunk[1:], payload)
-			copy(chunk[1+len(payload):], make([]byte, 63-len(payload)))
-			payload = nil
-		}
-		// Send over to the device
-		w.log.Trace("Data chunk sent to the Trezor", "chunk", hexutil.Bytes(chunk))
-		if _, err := w.device.Write(chunk); err != nil {
-			return 0, err
-		}
-	}
-	// Stream the reply back from the wallet in 64 byte chunks
-	var (
-		kind  uint16
-		reply []byte
-	)
-	for {
-		// Read the next chunk from the Trezor wallet
-		if _, err := io.ReadFull(w.device, chunk); err != nil {
-			return 0, err
-		}
-		w.log.Trace("Data chunk received from the Trezor", "chunk", hexutil.Bytes(chunk))
-
-		// Make sure the transport header matches
-		if chunk[0] != 0x3f || (len(reply) == 0 && (chunk[1] != 0x23 || chunk[2] != 0x23)) {
-			return 0, errTrezorReplyInvalidHeader
-		}
-		// If it's the first chunk, retrieve the reply message type and total message length
-		var payload []byte
-
-		if len(reply) == 0 {
-			kind = binary.BigEndian.Uint16(chunk[3:5])
-			reply = make([]byte, 0, int(binary.BigEndian.Uint32(chunk[5:9])))
-			payload = chunk[9:]
-		} else {
-			payload = chunk[1:]
-		}
-		// Append to the reply and stop when filled up
-		if left := cap(reply) - len(reply); left > len(payload) {
-			reply = append(reply, payload...)
-		} else {
-			reply = append(reply, payload[:left]...)
-			break
-		}
-	}
-	// Try to parse the reply into the requested reply message
-	if kind == uint16(trezor.MessageType_MessageType_Failure) {
-		// Trezor returned a failure, extract and return the message
-		failure := new(trezor.Failure)
-		if err := proto.Unmarshal(reply, failure); err != nil {
-			return 0, err
-		}
-		return 0, errors.New("trezor: " + failure.GetMessage())
-	}
-	if kind == uint16(trezor.MessageType_MessageType_ButtonRequest) {
-		// Trezor is waiting for user confirmation, ack and wait for the next message
-		return w.trezorExchange(&trezor.ButtonAck{}, results...)
-	}
-	for i, res := range results {
-		if trezor.Type(res) == kind {
-			return i, proto.Unmarshal(reply, res)
-		}
-	}
-	expected := make([]string, len(results))
-	for i, res := range results {
-		expected[i] = trezor.Name(trezor.Type(res))
-	}
-	return 0, fmt.Errorf("trezor: expected reply types %s, got %s", expected, trezor.Name(kind))
-}