73 lines
2.4 KiB
TypeScript
73 lines
2.4 KiB
TypeScript
import BN from 'bn.js';
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import EthTx, { TxObj } from 'ethereumjs-tx';
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import { addHexPrefix } from 'ethereumjs-util';
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import { stripHexPrefixAndLower, padLeftEven } from 'libs/values';
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import TrezorConnect from 'vendor/trezor-connect';
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import { DeterministicWallet } from './deterministic';
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import { getTransactionFields } from 'libs/transaction';
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import mapValues from 'lodash/mapValues';
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import { IFullWallet } from '../IWallet';
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export class TrezorWallet extends DeterministicWallet implements IFullWallet {
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public signRawTransaction(tx: EthTx): Promise<Buffer> {
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return new Promise((resolve, reject) => {
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const { chainId, ...strTx } = getTransactionFields(tx);
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// stripHexPrefixAndLower identical to ethFuncs.getNakedAddress
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const cleanedTx = mapValues(mapValues(strTx, stripHexPrefixAndLower), padLeftEven);
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(TrezorConnect as any).ethereumSignTx(
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// Args
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this.getPath(),
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cleanedTx.nonce,
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cleanedTx.gasPrice,
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cleanedTx.gasLimit,
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cleanedTx.to,
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cleanedTx.value,
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cleanedTx.data,
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chainId,
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// Callback
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result => {
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if (!result.success) {
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return reject(Error(result.error));
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}
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// TODO: Explain what's going on here? Add tests? Adapted from:
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// https://github.com/kvhnuke/etherwallet/blob/v3.10.2.6/app/scripts/uiFuncs.js#L24
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const txToSerialize: TxObj = {
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...strTx,
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v: addHexPrefix(new BN(result.v).toString(16)),
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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 eTx = new EthTx(txToSerialize);
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const serializedTx = eTx.serialize();
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resolve(serializedTx);
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}
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);
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});
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}
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public signMessage = () => Promise.reject(new Error('Signing via Trezor not yet supported.'));
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// works, but returns a signature that can only be verified with a Trezor device
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/*
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public signMessage = (message: string): Promise<string> => {
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return new Promise((resolve, reject) => {
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(TrezorConnect as any).ethereumSignMessage(
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this.getPath(),
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message,
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response => {
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if (response.success) {
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resolve(addHexPrefix(response.signature))
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} else{
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console.error(response.error)
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reject(response.error)
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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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}
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