504 lines
16 KiB
TypeScript
504 lines
16 KiB
TypeScript
'use strict';
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import scrypt from 'scrypt-js';
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import { getAddress } from '../utils/address';
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import { BigNumber, bigNumberify, ConstantZero } from '../utils/bignumber';
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import { arrayify, Arrayish, concat, hexlify, stripZeros, hexZeroPad } from '../utils/convert';
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import { keccak256 } from '../utils/keccak256';
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import { randomBytes } from '../utils/random-bytes';
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import * as RLP from '../utils/rlp';
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import { toUtf8Bytes, UnicodeNormalizationForm } from '../utils/utf8';
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import * as errors from '../utils/errors';
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import { entropyToMnemonic, fromMnemonic, HDNode } from './hdnode';
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import * as secretStorage from './secret-storage';
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import { SigningKey } from './signing-key';
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// This ensures we inject a setImmediate into the global space, which
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// dramatically improves the performance of the scrypt PBKDF.
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console.log("Fix this! Setimmediate");
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//import _setimmediate = require('setimmediate');
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interface Provider {
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chainId: number;
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getBalance(address: string, blockTag: number | string): Promise<BigNumber>;
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getTransactionCount(address: string, blockTag: number | string): Promise<number>;
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estimateGas(transaction: any): Promise<BigNumber>;
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getGasPrice(): Promise<BigNumber>;
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sendTransaction(Bytes): Promise<string>;
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resolveName(address: string): Promise<string>
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waitForTransaction(Bytes32): Promise<TransactionResponse>;
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}
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interface TransactionRequest {
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nonce?: number;
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to?: string;
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from?: string;
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data?: string;
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gasLimit?: BigNumber;
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gasPrice?: BigNumber;
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r?: string;
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s?: string;
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chainId?: number;
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v?: number;
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value?: BigNumber;
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}
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interface TransactionResponse extends TransactionRequest {
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hash?: string;
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blockHash?: string;
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block?: number;
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wait?: (timeout?: number) => Promise<TransactionResponse>;
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}
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var defaultPath = "m/44'/60'/0'/0/0";
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var transactionFields = [
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{name: 'nonce', maxLength: 32, },
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{name: 'gasPrice', maxLength: 32, },
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{name: 'gasLimit', maxLength: 32, },
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{name: 'to', length: 20, },
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{name: 'value', maxLength: 32, },
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{name: 'data'},
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];
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// @TODO: Bytes32 or SigningKey
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export class Wallet {
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readonly address: string;
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readonly privateKey: string;
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private mnemonic: string;
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private path: string;
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private readonly signingKey: SigningKey;
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provider: any;
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//private _provider;
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public defaultGasLimit: number = 1500000;
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constructor(privateKey: SigningKey | HDNode | Arrayish, provider?: Provider) {
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errors.checkNew(this, Wallet);
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// Make sure we have a valid signing key
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if (privateKey instanceof SigningKey) {
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this.signingKey = privateKey;
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if (this.signingKey.mnemonic) {
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Object.defineProperty(this, 'mnemonic', {
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enumerable: true,
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value: this.signingKey.mnemonic,
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writable: false
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});
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//this.mnemonic = this.signingKey.mnemonic;
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this.path = this.signingKey.path;
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}
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} else {
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this.signingKey = new SigningKey(privateKey);
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}
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this.privateKey = this.signingKey.privateKey
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this.provider = provider;
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//this.address = this.signingKey.address;
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Object.defineProperty(this, 'address', {
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enumerable: true,
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value: this.signingKey.address,
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writable: false
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});
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}
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sign(transaction: TransactionRequest) {
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var chainId = transaction.chainId;
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if (chainId == null && this.provider) { chainId = this.provider.chainId; }
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if (!chainId) { chainId = 0; }
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var raw = [];
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transactionFields.forEach(function(fieldInfo) {
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let value = transaction[fieldInfo.name] || ([]);
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value = arrayify(hexlify(value));
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// Fixed-width field
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if (fieldInfo.length && value.length !== fieldInfo.length && value.length > 0) {
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let error: any = new Error('invalid ' + fieldInfo.name);
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error.reason = 'wrong length';
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error.value = value;
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throw error;
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}
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// Variable-width (with a maximum)
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if (fieldInfo.maxLength) {
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value = stripZeros(value);
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if (value.length > fieldInfo.maxLength) {
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let error: any = new Error('invalid ' + fieldInfo.name);
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error.reason = 'too long';
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error.value = value;
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throw error;
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}
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}
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raw.push(hexlify(value));
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});
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if (chainId) {
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raw.push(hexlify(chainId));
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raw.push('0x');
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raw.push('0x');
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}
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var digest = keccak256(RLP.encode(raw));
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var signature = this.signingKey.signDigest(digest);
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var v = 27 + signature.recoveryParam
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if (chainId) {
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raw.pop();
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raw.pop();
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raw.pop();
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v += chainId * 2 + 8;
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}
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raw.push(hexlify(v));
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raw.push(signature.r);
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raw.push(signature.s);
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return RLP.encode(raw);
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}
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/*
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set provider(provider: Provider) {
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this._provider = provider;
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}
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get provider() {
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return this._provider;
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}
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*/
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static parseTransaction(rawTransaction: Arrayish): TransactionRequest {
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rawTransaction = hexlify(rawTransaction);
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var signedTransaction = RLP.decode(rawTransaction);
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if (signedTransaction.length !== 9) { throw new Error('invalid transaction'); }
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var raw = [];
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var transaction: any = { }
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transactionFields.forEach(function(fieldInfo, index) {
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transaction[fieldInfo.name] = signedTransaction[index];
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raw.push(signedTransaction[index]);
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});
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if (transaction.to) {
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if (transaction.to == '0x') {
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delete transaction.to;
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} else {
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transaction.to = getAddress(transaction.to);
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}
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}
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['gasPrice', 'gasLimit', 'nonce', 'value'].forEach(function(name: string) {
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if (!transaction[name]) { return; }
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let value: BigNumber = ConstantZero;
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if (transaction[name].length > 0) {
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value = bigNumberify(transaction[name]);
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}
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transaction[name] = value;
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});
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transaction.nonce = transaction.nonce.toNumber();
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var v = arrayify(signedTransaction[6]);
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var r = arrayify(signedTransaction[7]);
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var s = arrayify(signedTransaction[8]);
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if (v.length >= 1 && r.length >= 1 && r.length <= 32 && s.length >= 1 && s.length <= 32) {
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transaction.v = bigNumberify(v).toNumber();
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transaction.r = signedTransaction[7];
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transaction.s = signedTransaction[8];
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var chainId = (transaction.v - 35) / 2;
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if (chainId < 0) { chainId = 0; }
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chainId = Math.trunc(chainId);
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transaction.chainId = chainId;
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var recoveryParam = transaction.v - 27;
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if (chainId) {
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raw.push(hexlify(chainId));
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raw.push('0x');
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raw.push('0x');
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recoveryParam -= chainId * 2 + 8;
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}
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var digest = keccak256(RLP.encode(raw));
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try {
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transaction.from = SigningKey.recover(digest, r, s, recoveryParam);
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} catch (error) {
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console.log(error);
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}
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}
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return transaction;
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}
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getAddress() {
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return Promise.resolve(this.address);
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}
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getBalance(blockTag) {
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if (!this.provider) { throw new Error('missing provider'); }
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return this.provider.getBalance(this.address, blockTag);
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}
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getTransactionCount(blockTag) {
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if (!this.provider) { throw new Error('missing provider'); }
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return this.provider.getTransactionCount(this.address, blockTag);
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}
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estimateGas(transaction: TransactionRequest) {
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if (!this.provider) { throw new Error('missing provider'); }
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var calculate: TransactionRequest = {};
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['from', 'to', 'data', 'value'].forEach(function(key) {
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if (transaction[key] == null) { return; }
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calculate[key] = transaction[key];
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});
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if (transaction.from == null) { calculate.from = this.address; }
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return this.provider.estimateGas(calculate);
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}
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sendTransaction(transaction) {
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if (!this.provider) { throw new Error('missing provider'); }
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if (!transaction || typeof(transaction) !== 'object') {
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throw new Error('invalid transaction object');
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}
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var gasLimit = transaction.gasLimit;
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if (gasLimit == null) { gasLimit = this.defaultGasLimit; }
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var self = this;
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var gasPricePromise = null;
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if (transaction.gasPrice) {
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gasPricePromise = Promise.resolve(transaction.gasPrice);
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} else {
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gasPricePromise = this.provider.getGasPrice();
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}
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var noncePromise = null;
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if (transaction.nonce) {
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noncePromise = Promise.resolve(transaction.nonce);
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} else {
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noncePromise = this.provider.getTransactionCount(self.address, 'pending');
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}
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var chainId: number = this.provider.chainId;
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var toPromise = null;
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if (transaction.to) {
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toPromise = this.provider.resolveName(transaction.to);
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} else {
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toPromise = Promise.resolve(undefined);
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}
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var data = hexlify(transaction.data || '0x');
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var value = ConstantZero;
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return Promise.all([gasPricePromise, noncePromise, toPromise]).then(function(results: [ BigNumber, number, string]) {
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var signedTransaction = self.sign({
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to: results[2],
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data: data,
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gasLimit: gasLimit,
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gasPrice: results[0],
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nonce: results[1],
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value: value,
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chainId: chainId
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});
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return self.provider.sendTransaction(signedTransaction).then(function(hash) {
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var transaction: TransactionResponse = Wallet.parseTransaction(signedTransaction);
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transaction.hash = hash;
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transaction.wait = function() {
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return self.provider.waitForTransaction(hash);
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};
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return transaction;
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});
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});
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}
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send(addressOrName, amountWei, options) {
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if (!options) { options = {}; }
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return this.sendTransaction({
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to: addressOrName,
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gasLimit: options.gasLimit,
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gasPrice: options.gasPrice,
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nonce: options.nonce,
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value: amountWei,
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});
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}
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static hashMessage(message) {
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var payload = concat([
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toUtf8Bytes('\x19Ethereum Signed Message:\n'),
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toUtf8Bytes(String(message.length)),
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((typeof(message) === 'string') ? toUtf8Bytes(message): message)
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]);
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return keccak256(payload);
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}
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signMessage(message) {
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var signingKey = new SigningKey(this.privateKey);
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var sig = signingKey.signDigest(Wallet.hashMessage(message));
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return (hexZeroPad(sig.r, 32) + hexZeroPad(sig.s, 32).substring(2) + (sig.recoveryParam ? '1c': '1b'));
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}
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static verifyMessage(message, signature) {
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signature = hexlify(signature);
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if (signature.length != 132) { throw new Error('invalid signature'); }
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var digest = Wallet.hashMessage(message);
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var recoveryParam = parseInt(signature.substring(130), 16);
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if (recoveryParam >= 27) { recoveryParam -= 27; }
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if (recoveryParam < 0) { throw new Error('invalid signature'); }
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return SigningKey.recover(
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digest,
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signature.substring(0, 66),
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'0x' + signature.substring(66, 130),
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recoveryParam
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);
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}
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encrypt(password, options, progressCallback) {
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if (typeof(options) === 'function' && !progressCallback) {
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progressCallback = options;
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options = {};
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}
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if (progressCallback && typeof(progressCallback) !== 'function') {
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throw new Error('invalid callback');
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}
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if (!options) { options = {}; }
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if (this.mnemonic) {
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// Make sure we don't accidentally bubble the mnemonic up the call-stack
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var safeOptions = {};
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for (var key in options) { safeOptions[key] = options[key]; }
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options = safeOptions;
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// Set the mnemonic and path
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options.mnemonic = this.mnemonic;
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options.path = this.path
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}
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return secretStorage.encrypt(this.privateKey, password, options, progressCallback);
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}
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static createRandom(options) {
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var entropy: Uint8Array = randomBytes(16);
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if (!options) { options = { }; }
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if (options.extraEntropy) {
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entropy = arrayify(keccak256(concat([entropy, options.extraEntropy])).substring(0, 34));
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}
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var mnemonic = entropyToMnemonic(entropy);
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return Wallet.fromMnemonic(mnemonic, options.path);
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}
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static isEncryptedWallet(json: string) {
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return (secretStorage.isValidWallet(json) || secretStorage.isCrowdsaleWallet(json));
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}
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static fromEncryptedWallet(json, password, progressCallback) {
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if (progressCallback && typeof(progressCallback) !== 'function') {
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throw new Error('invalid callback');
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}
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return new Promise(function(resolve, reject) {
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if (secretStorage.isCrowdsaleWallet(json)) {
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try {
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var privateKey = secretStorage.decryptCrowdsale(json, password);
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resolve(new Wallet(privateKey));
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} catch (error) {
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reject(error);
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}
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} else if (secretStorage.isValidWallet(json)) {
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secretStorage.decrypt(json, password, progressCallback).then(function(signingKey) {
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var wallet = new Wallet(signingKey);
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/*
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if (signingKey.mnemonic && signingKey.path) {
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wallet.mnemonic = signingKey.mnemonic;
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wallet.path = signingKey.path;
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}
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*/
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resolve(wallet);
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}, function(error) {
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reject(error);
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});
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} else {
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reject('invalid wallet JSON');
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}
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});
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}
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static fromMnemonic(mnemonic: string, path?: string) {
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if (!path) { path = defaultPath; }
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return new Wallet(fromMnemonic(mnemonic).derivePath(path));
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}
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static fromBrainWallet(username: Arrayish | string, password: Arrayish | string, progressCallback) {
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if (progressCallback && typeof(progressCallback) !== 'function') {
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throw new Error('invalid callback');
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}
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if (typeof(username) === 'string') {
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username = toUtf8Bytes(username, UnicodeNormalizationForm.NFKC);
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} else {
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username = arrayify(username);
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}
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if (typeof(password) === 'string') {
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password = toUtf8Bytes(password, UnicodeNormalizationForm.NFKC);
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} else {
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password = arrayify(password);
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}
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return new Promise(function(resolve, reject) {
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scrypt(password, username, (1 << 18), 8, 1, 32, function(error, progress, key) {
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if (error) {
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reject(error);
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} else if (key) {
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resolve(new Wallet(hexlify(key)));
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} else if (progressCallback) {
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return progressCallback(progress);
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}
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});
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});
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}
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}
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