328 lines
11 KiB
JavaScript
328 lines
11 KiB
JavaScript
const fs = require('../../core/fs.js');
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const utils = require('../../utils/utils.js');
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const namehash = require('eth-ens-namehash');
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const async = require('async');
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const reverseAddrSuffix = '.addr.reverse';
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class ENS {
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constructor(embark, _options) {
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this.env = embark.env;
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this.logger = embark.logger;
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this.events = embark.events;
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this.namesConfig = embark.config.namesystemConfig;
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this.registration = this.namesConfig.register || {};
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this.embark = embark;
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this.addENSToEmbarkJS();
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this.configureContracts();
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this.registerEvents();
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}
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registerEvents() {
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this.embark.registerActionForEvent("contracts:deploy:afterAll", this.setProviderAndRegisterDomains.bind(this));
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this.embark.registerActionForEvent("storage:ens:associate", this.associateStorageToEns.bind(this));
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}
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setProviderAndRegisterDomains(cb) {
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const self = this;
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async.parallel([
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function getENSRegistry(paraCb) {
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self.events.request('contracts:contract', "ENSRegistry", (contract) => {
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paraCb(null, contract);
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});
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},
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function getRegistrar(paraCb) {
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self.events.request('contracts:contract', "FIFSRegistrar", (contract) => {
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paraCb(null, contract);
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});
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},
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function getResolver(paraCb) {
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self.events.request('contracts:contract', "Resolver", (contract) => {
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paraCb(null, contract);
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});
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}
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], (err, results) => {
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// result[0] => ENSRegistry; result[1] => FIFSRegistrar; result[2] => FIFSRegistrar
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let config = {
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env: self.env,
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registration: self.registration,
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registryAbi: results[0].abiDefinition,
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registryAddress: results[0].deployedAddress,
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registrarAbi: results[1].abiDefinition,
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registrarAddress: results[1].deployedAddress,
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resolverAbi: results[2].abiDefinition,
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resolverAddress: results[2].deployedAddress
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};
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self.addSetProvider(config);
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if (!self.env === 'development' || !self.registration || !self.registration.subdomains || !Object.keys(self.registration.subdomains).length) {
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return cb();
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}
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self.registerConfigDomains(config, cb);
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});
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}
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associateStorageToEns(options, cb) {
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const self =this;
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// Code inspired by https://github.com/monkybrain/ipfs-to-ens
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const {name, storageHash} = options;
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if (!ENS.isValidDomain(name)) {
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return cb('Invalid domain name ' + name);
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}
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let hashedName = namehash.hash(name);
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// Convert IPFS multihash to 32 byte hex string
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let contentHash;
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try {
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contentHash = ENS.hashTo32ByteHexString(storageHash);
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} catch(e) {
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return cb('Invalid IPFS hash');
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}
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// Set content
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async.waterfall([
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function getRegistryABI(next) {
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self.events.request('contracts:contract', "ENSRegistry", (contract) => {
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next(null, contract);
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});
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},
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function createRegistryContract(contract, next) {
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self.events.request("blockchain:contract:create",
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{abi: contract.abiDefinition, address: contract.deployedAddress},
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(resolver) => {
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next(null, resolver);
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});
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},
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function getResolverForName(registry, next) {
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registry.methods.resolver(hashedName).call((err, resolverAddress) => {
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if (err) {
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return cb(err);
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}
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if (resolverAddress === '0x0000000000000000000000000000000000000000') {
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return cb('Name not yet registered');
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}
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next(null, resolverAddress);
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});
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},
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function getResolverABI(resolverAddress, next) {
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self.events.request('contracts:contract', "Resolver", (contract) => {
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next(null, resolverAddress, contract);
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});
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},
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function createResolverContract(resolverAddress, contract, next) {
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self.events.request("blockchain:contract:create",
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{abi: contract.abiDefinition, address: resolverAddress},
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(resolver) => {
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next(null, resolver);
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});
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},
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function getDefaultAccount(resolver, next) {
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self.events.request("blockchain:defaultAccount:get", (defaultAccount) => {
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next(null, resolver, defaultAccount);
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});
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},
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function setContent(resolver, defaultAccount, next) {
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resolver.methods.setContent(hashedName, contentHash).send({from: defaultAccount}).then((err, transaction) => {
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if (err) {
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return next(err);
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}
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if (transaction.status !== "0x1" && transaction.status !== "0x01" && transaction.status !== true) {
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return next('Association failed. Status: ' + transaction.status);
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}
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next();
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});
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}
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], cb);
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}
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static isValidDomain(domain) {
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const isValidDomain = require('is-valid-domain');
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if (!isValidDomain(domain)) {
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return false;
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} else {
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return domain.substring(domain.lastIndexOf('.'), domain.length) === '.eth';
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}
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}
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static hashTo32ByteHexString(storageHash) {
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const multihash = require('multihashes');
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let buf = multihash.fromB58String(storageHash);
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let digest = multihash.decode(buf).digest;
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return '0x' + multihash.toHexString(digest);
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}
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registerConfigDomains(config, cb) {
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const self = this;
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const register = require('./register');
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self.events.request("blockchain:defaultAccount:get", (defaultAccount) => {
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async.parallel([
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function createRegistryContract(paraCb) {
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self.events.request("blockchain:contract:create",
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{abi: config.registryAbi, address: config.registryAddress},
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(registry) => {
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paraCb(null, registry);
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});
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},
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function createRegistrarContract(paraCb) {
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self.events.request("blockchain:contract:create",
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{abi: config.registrarAbi, address: config.registrarAddress},
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(registrar) => {
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paraCb(null, registrar);
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});
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},
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function createResolverContract(paraCb) {
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self.events.request("blockchain:contract:create",
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{abi: config.resolverAbi, address: config.resolverAddress},
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(resolver) => {
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paraCb(null, resolver);
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});
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}
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], function (err, contracts) {
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if (err) {
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return cb(err);
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}
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const [ens, registrar, resolver] = contracts;
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async.each(Object.keys(self.registration.subdomains), (subDomainName, eachCb) => {
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const address = self.registration.subdomains[subDomainName];
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const reverseNode = utils.soliditySha3(address.toLowerCase().substr(2) + reverseAddrSuffix);
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register(ens, registrar, resolver, defaultAccount, subDomainName, self.registration.rootDomain,
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reverseNode, address, self.logger, eachCb);
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}, cb);
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});
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});
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}
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addENSToEmbarkJS() {
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const self = this;
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// TODO: make this a shouldAdd condition
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if (this.namesConfig === {}) {
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return;
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}
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if ((this.namesConfig.available_providers.indexOf('ens') < 0) && (this.namesConfig.provider !== 'ens' || this.namesConfig.enabled !== true)) {
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return;
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}
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// get namehash, import it into file
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self.events.request("version:get:eth-ens-namehash", function (EnsNamehashVersion) {
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let currentEnsNamehashVersion = require('../../../package.json').dependencies["eth-ens-namehash"];
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if (EnsNamehashVersion !== currentEnsNamehashVersion) {
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self.events.request("version:getPackageLocation", "eth-ens-namehash", EnsNamehashVersion, function (err, location) {
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self.embark.registerImportFile("eth-ens-namehash", fs.dappPath(location));
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});
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}
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});
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let code = fs.readFileSync(utils.joinPath(__dirname, 'register.js')).toString();
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code += "\n" + fs.readFileSync(utils.joinPath(__dirname, 'embarkjs.js')).toString();
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code += "\nEmbarkJS.Names.registerProvider('ens', __embarkENS);";
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this.embark.addCodeToEmbarkJS(code);
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}
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configureContracts() {
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const config = {
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"default": {
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"gas": "auto"
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},
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"development": {
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"contracts": {
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"ENSRegistry": {
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"deploy": true,
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"args": []
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},
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"Resolver": {
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"deploy": true,
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"args": ["$ENSRegistry"]
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},
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"FIFSRegistrar": {
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"deploy": false
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}
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}
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},
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"ropsten": {
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"contracts": {
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"ENSRegistry": {
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"address": "0x112234455c3a32fd11230c42e7bccd4a84e02010"
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},
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"Resolver": {
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"deploy": false
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},
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"FIFSRegistrar": {
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"deploy": false
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}
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}
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},
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"rinkeby": {
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"contracts": {
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"ENSRegistry": {
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"address": "0xe7410170f87102DF0055eB195163A03B7F2Bff4A"
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},
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"Resolver": {
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"deploy": false
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},
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"FIFSRegistrar": {
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"deploy": false
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}
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}
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},
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"livenet": {
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"contracts": {
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"ENSRegistry": {
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"address": "0x314159265dd8dbb310642f98f50c066173c1259b"
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},
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"Resolver": {
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"deploy": false
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},
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"FIFSRegistrar": {
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"deploy": false
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}
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}
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}
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};
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if (this.registration && this.registration.rootDomain) {
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// Register root domain if it is defined
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const rootNode = namehash.hash(this.registration.rootDomain);
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config.development.contracts['FIFSRegistrar'] = {
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"deploy": true,
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"args": ["$ENSRegistry", rootNode],
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"onDeploy": [
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`ENSRegistry.methods.setOwner('${rootNode}', web3.eth.defaultAccount).send().then(() => {
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ENSRegistry.methods.setResolver('${rootNode}', "$Resolver").send();
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var reverseNode = web3.utils.soliditySha3(web3.eth.defaultAccount.toLowerCase().substr(2) + '${reverseAddrSuffix}');
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ENSRegistry.methods.setResolver(reverseNode, "$Resolver").send();
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Resolver.methods.setAddr('${rootNode}', web3.eth.defaultAccount).send();
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Resolver.methods.setName(reverseNode, '${this.registration.rootDomain}').send();
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})`
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]
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};
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}
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this.embark.registerContractConfiguration(config);
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this.embark.events.request("config:contractsFiles:add", this.embark.pathToFile('./contracts/ENSRegistry.sol'));
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this.embark.events.request("config:contractsFiles:add", this.embark.pathToFile('./contracts/FIFSRegistrar.sol'));
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this.embark.events.request("config:contractsFiles:add", this.embark.pathToFile('./contracts/Resolver.sol'));
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}
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addSetProvider(config) {
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let code = "\nEmbarkJS.Names.setProvider('ens'," + JSON.stringify(config) + ");";
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let shouldInit = (namesConfig) => {
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return (namesConfig.provider === 'ens' && namesConfig.enabled === true);
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};
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this.embark.addProviderInit('names', code, shouldInit);
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}
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}
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module.exports = ENS;
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