82 lines
2.4 KiB
TypeScript
82 lines
2.4 KiB
TypeScript
import Ledger3 from 'vendor/ledger3';
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import LedgerEth from 'vendor/ledger-eth';
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import EthTx from 'ethereumjs-tx';
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import { addHexPrefix, rlp } from 'ethereumjs-util';
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import { DeterministicWallet } from './deterministic';
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import { IWallet } from '../IWallet';
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import { RawTransaction } from 'libs/transaction';
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export class LedgerWallet extends DeterministicWallet implements IWallet {
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private ledger: any;
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private ethApp: any;
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constructor(address: string, dPath: string, index: number) {
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super(address, dPath, index);
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this.ledger = new Ledger3('w0w');
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this.ethApp = new LedgerEth(this.ledger);
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}
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// modeled after
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// https://github.com/kvhnuke/etherwallet/blob/3f7ff809e5d02d7ea47db559adaca1c930025e24/app/scripts/uiFuncs.js#L58
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public signRawTransaction(rawTx: RawTransaction): Promise<string> {
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return new Promise((resolve, reject) => {
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const eTx = new EthTx({
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...rawTx,
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v: Buffer.from([rawTx.chainId]),
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r: 0,
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s: 0
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});
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this.ethApp.signTransaction(
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this.getPath(),
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rlp.encode(eTx.raw).toString('hex'),
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(result, error) => {
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if (error) {
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return reject(this.ethApp.getError(error));
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}
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const txToSerialize = {
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...rawTx,
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v: addHexPrefix(result.v),
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r: addHexPrefix(result.r),
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s: addHexPrefix(result.s)
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};
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const serializedTx = new EthTx(txToSerialize)
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.serialize()
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.toString('hex');
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resolve(addHexPrefix(serializedTx));
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}
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);
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});
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}
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// modeled after
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// https://github.com/kvhnuke/etherwallet/blob/3f7ff809e5d02d7ea47db559adaca1c930025e24/app/scripts/controllers/signMsgCtrl.js#L53
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public signMessage(msg: string): Promise<string> {
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return new Promise((resolve, reject) => {
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const msgHex = Buffer.from(msg).toString('hex');
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this.ethApp.signPersonalMessage_async(
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this.getPath(),
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msgHex,
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async (signed, error) => {
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if (error) {
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return reject(this.ethApp.getError(error));
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}
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try {
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const combined = signed.r + signed.s + signed.v;
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const combinedHex = combined.toString('hex');
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const signature = addHexPrefix(combinedHex);
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resolve(signature);
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} catch (err) {
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reject(err);
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}
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}
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);
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});
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}
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}
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