212 lines
8.3 KiB
JavaScript
212 lines
8.3 KiB
JavaScript
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"use strict";
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.makeEthereumWalletSigner = exports.ethToSwarmAddress = exports.fromLittleEndian = exports.toLittleEndian = exports.isHexEthAddress = exports.makeHexEthAddress = exports.makeEthAddress = void 0;
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// For ESM compatibility
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const js_sha3_1 = __importDefault(require("js-sha3"));
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const { keccak256, sha3_256 } = js_sha3_1.default;
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const hex_1 = require("./hex");
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const bytes_1 = require("./bytes");
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const ETH_ADDR_BYTES_LENGTH = 20;
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const ETH_ADDR_HEX_LENGTH = 40;
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function makeEthAddress(address) {
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if (typeof address === 'string') {
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const hexAddr = (0, hex_1.makeHexString)(address, ETH_ADDR_HEX_LENGTH);
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const ownerBytes = (0, hex_1.hexToBytes)(hexAddr);
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(0, bytes_1.assertBytes)(ownerBytes, ETH_ADDR_BYTES_LENGTH);
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return ownerBytes;
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}
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else if (address instanceof Uint8Array) {
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(0, bytes_1.assertBytes)(address, ETH_ADDR_BYTES_LENGTH);
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return address;
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}
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throw new TypeError('Invalid EthAddress');
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}
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exports.makeEthAddress = makeEthAddress;
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function makeHexEthAddress(address) {
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try {
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return (0, hex_1.makeHexString)(address, ETH_ADDR_HEX_LENGTH);
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}
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catch (e) {
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if (e instanceof TypeError) {
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e.message = `Invalid HexEthAddress: ${e.message}`;
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}
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throw e;
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}
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}
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exports.makeHexEthAddress = makeHexEthAddress;
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/**
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* Check if this is all caps or small caps eth address (=address without checksum)
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*
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* @param address Ethereum address as hex string
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*/
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function isEthAddrCaseIns(address) {
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// Check it's string, all small caps or all all caps hex and 40 chars long without the `0x` prefix
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return (typeof address === 'string' && (/^(0x|0X)?[0-9a-f]{40}$/.test(address) || /^(0x|0X)?[0-9A-F]{40}$/.test(address)));
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}
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/**
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* Check if this is checksummed ethereum address
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*
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* @param address Ethereum address as hex string
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*/
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function isValidChecksummedEthAddress(address) {
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try {
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// Check for valid case insensitive hex type string, 40 chars
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const addr = (0, hex_1.makeHexString)(address, ETH_ADDR_HEX_LENGTH);
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// Check the checksum
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const addressHash = keccak256(addr.toLowerCase());
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for (let i = 0; i < 40; i += 1) {
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// the nth letter should be uppercase if the nth digit of casemap is 1
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if ((parseInt(addressHash[i], 16) > 7 && addr[i].toUpperCase() !== addr[i]) ||
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(parseInt(addressHash[i], 16) <= 7 && addr[i].toLowerCase() !== addr[i])) {
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return false;
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}
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}
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return true;
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}
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catch (e) {
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if (e instanceof TypeError) {
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return false;
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}
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throw e;
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}
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}
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/**
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* Check if is valid ethereum address
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*
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* Pretty much typed version from web3js
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* https://github.com/ChainSafe/web3.js/blob/1.x/packages/web3-utils/src/utils.js
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*
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* @param address Ethereum address as hex string
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*
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* @return True if is valid eth address
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*/
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function isHexEthAddress(address) {
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return isEthAddrCaseIns(address) || isValidChecksummedEthAddress(address);
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}
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exports.isHexEthAddress = isHexEthAddress;
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/**
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* Convert big-endian hex or number to little-endian.
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* Note: Before conversion it is automatically padded to even length hexstring
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*
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* @param bigEndian Big-endian hex string or number to convert
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* @param pad Length to which the string should be padded before conversion (defaul: 2)
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*
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* @return little-endian encoded hexstring
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*/
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function toLittleEndian(bigEndian, pad = 2) {
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var _a;
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if (!(Number.isInteger(pad) && pad >= 2 && pad % 2 === 0)) {
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throw new TypeError('minimal padding for conversion needs to be positive even integer');
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}
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let hexRep;
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if (typeof bigEndian === 'string')
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hexRep = (0, hex_1.makeHexString)(bigEndian);
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else if (typeof bigEndian === 'number')
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hexRep = (0, hex_1.intToHex)(bigEndian);
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else
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throw new TypeError('incorrect input type');
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hexRep = hexRep.padStart(pad, '0');
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// Extend to an even length hexstring
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if (hexRep.length % 2 !== 0)
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hexRep = hexRep.padStart(hexRep.length + 1, '0');
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// Match all two pairs in the hexstring, reverse the pairs and join it again
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const littleEndian = (_a = hexRep.match(/../g)) === null || _a === void 0 ? void 0 : _a.reverse().join('');
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if (littleEndian)
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return littleEndian;
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throw new Error('failed to convert');
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}
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exports.toLittleEndian = toLittleEndian;
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/**
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* Convert little-endian hex or number to big-endian
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* Note: Before conversion it is automatically padded to even length hexstring
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*
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* @param littleEndian Little-endian hex string or number to convert
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* @param pad Length to which the string should be padded before conversion (defaul: 2)
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*
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* @return big-endian encoded hexstring
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*/
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function fromLittleEndian(littleEndian, pad = 2) {
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// It's a reversible function
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return toLittleEndian(littleEndian, pad);
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}
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exports.fromLittleEndian = fromLittleEndian;
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function assertEthAddress(ethAddress) {
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if (!isHexEthAddress(ethAddress))
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throw new TypeError('invalid ETH address');
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}
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function assertSwarmNetworkId(networkId) {
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if (Number.isInteger(networkId && networkId > 0 && networkId < Number.MAX_SAFE_INTEGER)) {
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throw new TypeError('swarm network id must be positive integer');
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}
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}
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/**
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* Get swarm overlay address from public ethereum address and swarm network id
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*
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* @param ethAddress Public ethereum address
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* @param networkId Swarm network id
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*
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* @return Swarm overlay address
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*/
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function ethToSwarmAddress(ethAddress, networkId = 1) {
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assertEthAddress(ethAddress);
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assertSwarmNetworkId(networkId);
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const hex = `${(0, hex_1.makeHexString)(ethAddress)}${toLittleEndian(networkId, 16)}`;
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(0, hex_1.assertHexString)(hex);
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const overlayAddress = sha3_256((0, hex_1.hexToBytes)(hex));
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return overlayAddress;
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}
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exports.ethToSwarmAddress = ethToSwarmAddress;
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/**
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* Function that takes Ethereum EIP-1193 compatible provider and create an Signer instance that
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* uses `personal_sign` method to sign requested data.
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*
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* @param provider Injected web3 provider like window.ethereum or other compatible with EIP-1193
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* @param ethAddress Optional address of the account which the data should be signed with. If not specified `eth_requestAccounts` request is used to get the account address.
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*/
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function makeEthereumWalletSigner(provider, ethAddress) {
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return __awaiter(this, void 0, void 0, function* () {
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let executorFnc;
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if (typeof provider !== 'object' || provider === null) {
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throw new TypeError('We need JsonRPC provider object!');
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}
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if (provider.request) {
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executorFnc = provider.request;
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}
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else if (provider.sendAsync) {
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executorFnc = provider.sendAsync;
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}
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else {
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throw new Error('Incompatible interface of given provider!');
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}
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if (!ethAddress) {
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ethAddress = (yield executorFnc({ method: 'eth_requestAccounts' }))[0];
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}
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const bytesEthAddress = makeEthAddress(ethAddress);
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const hexEthAddress = makeHexEthAddress(ethAddress);
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return {
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address: bytesEthAddress,
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sign: (data) => __awaiter(this, void 0, void 0, function* () {
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const result = yield executorFnc({
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jsonrpc: '2.0',
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method: 'personal_sign',
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params: ['0x' + data.hex(), '0x' + hexEthAddress],
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});
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return result;
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}),
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};
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});
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}
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exports.makeEthereumWalletSigner = makeEthereumWalletSigner;
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