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Текущая директория: /opt/BitGoJS/node_modules/avalanche/node_modules/@ethersproject/hash/lib
Просмотр файла: namehash.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.dnsEncode = exports.namehash = exports.isValidName = void 0;
var bytes_1 = require("@ethersproject/bytes");
var strings_1 = require("@ethersproject/strings");
var keccak256_1 = require("@ethersproject/keccak256");
var logger_1 = require("@ethersproject/logger");
var _version_1 = require("./_version");
var logger = new logger_1.Logger(_version_1.version);
var Zeros = new Uint8Array(32);
Zeros.fill(0);
var Partition = new RegExp("^((.*)\\.)?([^.]+)$");
function isValidName(name) {
try {
var comps = name.split(".");
for (var i = 0; i < comps.length; i++) {
if ((0, strings_1.nameprep)(comps[i]).length === 0) {
throw new Error("empty");
}
}
return true;
}
catch (error) { }
return false;
}
exports.isValidName = isValidName;
function namehash(name) {
/* istanbul ignore if */
if (typeof (name) !== "string") {
logger.throwArgumentError("invalid ENS name; not a string", "name", name);
}
var current = name;
var result = Zeros;
while (current.length) {
var partition = current.match(Partition);
if (partition == null || partition[2] === "") {
logger.throwArgumentError("invalid ENS address; missing component", "name", name);
}
var label = (0, strings_1.toUtf8Bytes)((0, strings_1.nameprep)(partition[3]));
result = (0, keccak256_1.keccak256)((0, bytes_1.concat)([result, (0, keccak256_1.keccak256)(label)]));
current = partition[2] || "";
}
return (0, bytes_1.hexlify)(result);
}
exports.namehash = namehash;
function dnsEncode(name) {
return (0, bytes_1.hexlify)((0, bytes_1.concat)(name.split(".").map(function (comp) {
// We jam in an _ prefix to fill in with the length later
// Note: Nameprep throws if the component is over 63 bytes
var bytes = (0, strings_1.toUtf8Bytes)("_" + (0, strings_1.nameprep)(comp));
bytes[0] = bytes.length - 1;
return bytes;
}))) + "00";
}
exports.dnsEncode = dnsEncode;
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