tronweb
Version:
JavaScript SDK that encapsulates the TRON HTTP API
107 lines • 3.94 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.fromHex = fromHex;
exports.toHex = toHex;
exports.toChecksumAddress = toChecksumAddress;
exports.isChecksumAddress = isChecksumAddress;
exports.fromPrivateKey = fromPrivateKey;
exports.isAddress = isAddress;
exports.getCreate2Address = getCreate2Address;
const code_js_1 = require("./code.js");
const crypto_js_1 = require("./crypto.js");
const validations_js_1 = require("./validations.js");
const ethersUtils_js_1 = require("./ethersUtils.js");
const constants_js_1 = require("./constants.js");
function fromHex(address) {
if (!(0, validations_js_1.isHex)(address))
return address;
return (0, crypto_js_1.getBase58CheckAddress)((0, code_js_1.hexStr2byteArray)(address.replace(/^0x/, constants_js_1.ADDRESS_PREFIX)));
}
function toHex(address) {
if ((0, validations_js_1.isHex)(address))
return address.toLowerCase().replace(/^0x/, constants_js_1.ADDRESS_PREFIX);
return (0, code_js_1.byteArray2hexStr)((0, crypto_js_1.decodeBase58Address)(address)).toLowerCase();
}
function getChecksumAddress(address) {
address = address.toLowerCase();
const chars = address.substring(2).split('');
const expanded = new Uint8Array(40);
for (let i = 0; i < 40; i++) {
expanded[i] = chars[i].charCodeAt(0);
}
const hashed = (0, code_js_1.hexStr2byteArray)((0, ethersUtils_js_1.keccak256)(expanded).slice(2));
for (let i = 0; i < 40; i += 2) {
if ((hashed[i >> 1] >> 4) >= 8) {
chars[i] = chars[i].toUpperCase();
}
if ((hashed[i >> 1] & 0x0f) >= 8) {
chars[i + 1] = chars[i + 1].toUpperCase();
}
}
return constants_js_1.ADDRESS_PREFIX + chars.join('');
}
function toChecksumAddress(address) {
if (!isAddress(address))
throw new Error(`'${address}' is not a valid address string`);
return getChecksumAddress(toHex(address));
}
function isChecksumAddress(address) {
if (!(0, validations_js_1.isHex)(address) || address.length !== 42)
return false;
try {
return toChecksumAddress(address) === address;
}
catch {
return false;
}
}
function fromPrivateKey(privateKey, strict = false) {
try {
return (0, crypto_js_1.pkToAddress)(privateKey, strict);
}
catch {
return false;
}
}
function isAddress(address) {
if (!address || !(0, validations_js_1.isString)(address))
return false;
// Convert HEX to Base58
if (address.length === 42) {
try {
// it throws an error if the address starts with 0x
return isAddress((0, crypto_js_1.getBase58CheckAddress)((0, code_js_1.hexStr2byteArray)(address)));
}
catch (err) {
return false;
}
}
try {
return (0, crypto_js_1.isAddressValid)(address);
}
catch (err) {
return false;
}
}
function hexToUint8Array(hex) {
return new Uint8Array((0, code_js_1.hexStr2byteArray)(hex.replace(/^0x/, '')));
}
function convertToUint8Array(value) {
return typeof value === 'string' ? hexToUint8Array(value) : value;
}
function getCreate2Address({ from, salt, initCode, addressFormat = 'base58', }) {
if (!isAddress(from)) {
throw new Error(`from(${from}) is not a valid address string`);
}
const _from = hexToUint8Array(toHex(from));
const _salt = convertToUint8Array(salt);
const _initCode = convertToUint8Array(initCode);
if (_salt.length !== 32) {
throw new Error(`salt(${salt}) must be 32 bytes`);
}
const _initCodeHash = hexToUint8Array((0, ethersUtils_js_1.keccak256)(_initCode));
const merged = (0, ethersUtils_js_1.concat)([_from, _salt, _initCodeHash]);
const addressHex = `41${(0, ethersUtils_js_1.keccak256)(merged).slice(-40)}`;
return addressFormat === 'base58' ? fromHex(addressHex) : addressHex;
}
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