Ethereum Ðapp Development - Video 13 | Ethereum Name Service (ENS)

decypher.js

// Config
global.config = {
  rpc: {
    host: "localhost",
    port: "8545"
  }
}

// Load Libraries
global.solc = require("solc")
global.EthTx = require("ethereumjs-tx")
global.EthUtil = require("ethereumjs-util")
global.fs = require("fs")
global.Web3 = require("web3")
global.lodash = require("lodash")
global.SolidityFunction = require("web3/lib/web3/function")

// Connect Web3 Instance
// global.web3 = new Web3(new Web3.providers.HttpProvider(`http://${global.config.rpc.host}:${global.config.rpc.port}`))
// global.web3 = new Web3(new Web3.providers.HttpProvider(`https://mainnet.infura.io/EjLdRlni9SfrUBEnnvVt`))
global.web3 = new Web3(new Web3.providers.HttpProvider(`https://ropsten.infura.io/EjLdRlni9SfrUBEnnvVt`))

// ENS
// global.ENS = require("ethereum-ens")
global.ENS = require("./ensutils.js")
global.ens = new ENS(global.web3)

// Global Account Accessors
// global.acct1 = web3.eth.accounts[0]
// global.acct2 = web3.eth.accounts[1]
// global.acct3 = web3.eth.accounts[2]
// global.acct4 = web3.eth.accounts[3]
// global.acct5 = web3.eth.accounts[4]

// Helper Functions
class Helpers {

  contractName(source) {
    var re1 = /contract.*{/g
    var re2 = /\s\w+\s/
    return source.match(re1).pop().match(re2)[0].trim()
  }

  createContract(source, options={}) {
    var compiled = solc.compile(source)
    var contractName = this.contractName(source)
    var bytecode = compiled["contracts"][contractName]["bytecode"]
    var abi = JSON.parse(compiled["contracts"][contractName]["interface"])
    var contract = global.web3.eth.contract(abi)
    var gasEstimate = global.web3.eth.estimateGas({ data: bytecode })

    var deployed = contract.new(Object.assign({
      from: global.web3.eth.accounts[0],
      value: global.web3.toWei(3, 'ether'),
      data: bytecode,
      gas: gasEstimate,
      gasPrice: global.web3.eth.gasPrice
    }, options), (error, result) => { })

    return deployed
  }

  loadContract(name) {
    var path = `./${name.toLowerCase()}.sol`
    return fs.readFileSync(path, 'utf8')
  }

  contractObject(name) {
    var source = this.loadContract(name)
    var compiled = solc.compile(source)
    var contractName = this.contractName(source)
    var bytecode = compiled["contracts"][contractName]["bytecode"]
    var abi = JSON.parse(compiled["contracts"][contractName]["interface"])
    var contract = global.web3.eth.contract(abi)

    return contract
  }

  deployedObject(name, address) {
    var source = this.loadContract(name)
    var compiled = solc.compile(source)
    var contractName = this.contractName(source)
    var bytecode = compiled["contracts"][contractName]["bytecode"]
    var abi = JSON.parse(compiled["contracts"][contractName]["interface"])
    var contract = global.web3.eth.contract(abi)

    return contract.at(address)
  }

  signContractCall() {
    var deployed = arguments['0'].deployed
    var methodName  = arguments['0'].methodName
    var pKeyx = arguments['0'].pKeyx
    var fromAddress = arguments['0'].fromAddress

    var args = [...arguments]; var params = args.slice(1, args.length);
    var solidityFunction = new global.SolidityFunction('', lodash.find(deployed.abi, { name: methodName }), '')
    var payloadData = solidityFunction.toPayload(params).data

    var rawTx = {
      nonce: global.web3.toHex(global.web3.eth.getTransactionCount(fromAddress)),
      gasPrice: global.web3.toHex(global.web3.eth.gasPrice),
      gasLimit: global.web3.toHex(300000),
      to: deployed.address,
      from: fromAddress,
      data: payloadData
    }

    var tx = new global.EthTx(rawTx)
    tx.sign(pKeyx)
    return tx.serialize().toString('hex')
  }

  callContract() {
    var deployed = arguments['0'].deployed
    var methodName  = arguments['0'].methodName
    var pKeyx = arguments['0'].pKeyx
    var fromAddress = arguments['0'].fromAddress

    var args = [...arguments]; var params = args.slice(1, args.length);
    var solidityFunction = new global.SolidityFunction('', lodash.find(deployed.abi, { name: methodName }), '')
    var payloadData = solidityFunction.toPayload(params).data

    var rawTx = {
      nonce: global.web3.toHex(global.web3.eth.getTransactionCount(fromAddress)),
      gasPrice: global.web3.toHex(global.web3.eth.gasPrice),
      gasLimit: global.web3.toHex(arguments['0'].gas || 300000),
      to: deployed.address,
       from: fromAddress,
      data: payloadData
    }

    var tx = new global.EthTx(rawTx)
    tx.sign(pKeyx)
    var txData = tx.serialize().toString('hex')

    global.web3.eth.sendRawTransaction(`0x${txData}`, (error, txHash) => {
      if(error) {
        console.log(`ERROR...`)
        console.log(error)
      } else {
        console.log(`TxHash...`)
        console.log(txHash)
      }
    })

    return true
  }

  deployContract(name, options={}) {
    var source = this.loadContract(name)
    return this.createContract(source, options)
  }

  etherBalance(contract) {
    switch(typeof(contract)) {
      case "object":
        if(contract.address) {
          return global.web3.fromWei(global.web3.eth.getBalance(contract.address), 'ether').toNumber()
        } else {
          return new Error("cannot call getEtherBalance on an object that does not have a property 'address'")
        }
        break
      case "string":
        return global.web3.fromWei(global.web3.eth.getBalance(contract), 'ether').toNumber()
        break
    }
  }

}

// Load Helpers into Decypher namespace
global.decypher = new Helpers()

// Start repl
require('repl').start({})

ensutils.js

var ensContractABI = [
  {
    "constant": true,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      }
    ],
    "name": "resolver",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      }
    ],
    "name": "owner",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      },
      {
        "name": "label",
        "type": "bytes32"
      },
      {
        "name": "owner",
        "type": "address"
      }
    ],
    "name": "setSubnodeOwner",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      },
      {
        "name": "ttl",
        "type": "uint64"
      }
    ],
    "name": "setTTL",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      }
    ],
    "name": "ttl",
    "outputs": [
      {
        "name": "",
        "type": "uint64"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      },
      {
        "name": "resolver",
        "type": "address"
      }
    ],
    "name": "setResolver",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      },
      {
        "name": "owner",
        "type": "address"
      }
    ],
    "name": "setOwner",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "node",
        "type": "bytes32"
      },
      {
        "indexed": false,
        "name": "owner",
        "type": "address"
      }
    ],
    "name": "Transfer",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "node",
        "type": "bytes32"
      },
      {
        "indexed": true,
        "name": "label",
        "type": "bytes32"
      },
      {
        "indexed": false,
        "name": "owner",
        "type": "address"
      }
    ],
    "name": "NewOwner",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "node",
        "type": "bytes32"
      },
      {
        "indexed": false,
        "name": "resolver",
        "type": "address"
      }
    ],
    "name": "NewResolver",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "node",
        "type": "bytes32"
      },
      {
        "indexed": false,
        "name": "ttl",
        "type": "uint64"
      }
    ],
    "name": "NewTTL",
    "type": "event"
  }
]

var auctionRegistrarContractABI = [
  {
    "constant": false,
    "inputs": [
      {
        "name": "_hash",
        "type": "bytes32"
      }
    ],
    "name": "releaseDeed",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "unhashedName",
        "type": "string"
      }
    ],
    "name": "invalidateName",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "hash",
        "type": "bytes32"
      },
      {
        "name": "owner",
        "type": "address"
      },
      {
        "name": "value",
        "type": "uint256"
      },
      {
        "name": "salt",
        "type": "bytes32"
      }
    ],
    "name": "shaBid",
    "outputs": [
      {
        "name": "sealedBid",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "",
        "type": "bytes32"
      }
    ],
    "name": "entries",
    "outputs": [
      {
        "name": "status",
        "type": "uint8"
      },
      {
        "name": "deed",
        "type": "address"
      },
      {
        "name": "registrationDate",
        "type": "uint256"
      },
      {
        "name": "value",
        "type": "uint256"
      },
      {
        "name": "highestBid",
        "type": "uint256"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "ens",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_hash",
        "type": "bytes32"
      }
    ],
    "name": "transferRegistrars",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "",
        "type": "bytes32"
      }
    ],
    "name": "sealedBids",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_hash",
        "type": "bytes32"
      },
      {
        "name": "newOwner",
        "type": "address"
      }
    ],
    "name": "transfer",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_hash",
        "type": "bytes32"
      }
    ],
    "name": "finalizeAuction",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_hash",
        "type": "bytes32"
      },
      {
        "name": "_owner",
        "type": "address"
      },
      {
        "name": "_value",
        "type": "uint256"
      },
      {
        "name": "_salt",
        "type": "bytes32"
      }
    ],
    "name": "unsealBid",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "registryCreated",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "sealedBid",
        "type": "bytes32"
      }
    ],
    "name": "newBid",
    "outputs": [],
    "payable": true,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "seal",
        "type": "bytes32"
      }
    ],
    "name": "cancelBid",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_hashes",
        "type": "bytes32[]"
      }
    ],
    "name": "startAuctions",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_hash",
        "type": "bytes32"
      }
    ],
    "name": "startAuction",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "rootNode",
    "outputs": [
      {
        "name": "",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "_ens",
        "type": "address"
      },
      {
        "name": "_rootNode",
        "type": "bytes32"
      }
    ],
    "type": "constructor"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "hash",
        "type": "bytes32"
      },
      {
        "indexed": false,
        "name": "auctionExpiryDate",
        "type": "uint256"
      }
    ],
    "name": "AuctionStarted",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "hash",
        "type": "bytes32"
      },
      {
        "indexed": false,
        "name": "deposit",
        "type": "uint256"
      }
    ],
    "name": "NewBid",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "hash",
        "type": "bytes32"
      },
      {
        "indexed": true,
        "name": "owner",
        "type": "address"
      },
      {
        "indexed": false,
        "name": "value",
        "type": "uint256"
      },
      {
        "indexed": false,
        "name": "status",
        "type": "uint8"
      }
    ],
    "name": "BidRevealed",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "hash",
        "type": "bytes32"
      },
      {
        "indexed": true,
        "name": "owner",
        "type": "address"
      },
      {
        "indexed": false,
        "name": "value",
        "type": "uint256"
      },
      {
        "indexed": false,
        "name": "now",
        "type": "uint256"
      }
    ],
    "name": "HashRegistered",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "hash",
        "type": "bytes32"
      },
      {
        "indexed": false,
        "name": "value",
        "type": "uint256"
      }
    ],
    "name": "HashReleased",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "hash",
        "type": "bytes32"
      },
      {
        "indexed": true,
        "name": "name",
        "type": "string"
      },
      {
        "indexed": false,
        "name": "value",
        "type": "uint256"
      },
      {
        "indexed": false,
        "name": "now",
        "type": "uint256"
      }
    ],
    "name": "HashInvalidated",
    "type": "event"
  }
]

var deedContractABI = [
  {
    "constant": true,
    "inputs": [],
    "name": "creationDate",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [],
    "name": "destroyDeed",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "newOwner",
        "type": "address"
      }
    ],
    "name": "setOwner",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "registrar",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "owner",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "refundRatio",
        "type": "uint256"
      }
    ],
    "name": "closeDeed",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "newRegistrar",
        "type": "address"
      }
    ],
    "name": "setRegistrar",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "newValue",
        "type": "uint256"
      }
    ],
    "name": "setBalance",
    "outputs": [],
    "payable": true,
    "type": "function"
  },
  {
    "inputs": [],
    "type": "constructor"
  },
  {
    "payable": true,
    "type": "fallback"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": false,
        "name": "newOwner",
        "type": "address"
      }
    ],
    "name": "OwnerChanged",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [],
    "name": "DeedClosed",
    "type": "event"
  }
]

var fifsRegistrarABI = [
  {
    "constant": true,
    "inputs": [],
    "name": "ens",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "",
        "type": "bytes32"
      }
    ],
    "name": "expiryTimes",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "subnode",
        "type": "bytes32"
      },
      {
        "name": "owner",
        "type": "address"
      }
    ],
    "name": "register",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "rootNode",
    "outputs": [
      {
        "name": "",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "ensAddr",
        "type": "address"
      },
      {
        "name": "node",
        "type": "bytes32"
      }
    ],
    "type": "constructor"
  }
]

var resolverContractABI = [
  {
    "constant": true,
    "inputs": [
      {
        "name": "interfaceID",
        "type": "bytes4"
      }
    ],
    "name": "supportsInterface",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      }
    ],
    "name": "addr",
    "outputs": [
      {
        "name": "ret",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      },
      {
        "name": "kind",
        "type": "bytes32"
      }
    ],
    "name": "has",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      },
      {
        "name": "addr",
        "type": "address"
      }
    ],
    "name": "setAddr",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      }
    ],
    "name": "content",
    "outputs": [
      {
        "name": "ret",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "node",
        "type": "bytes32"
      },
      {
        "name": "hash",
        "type": "bytes32"
      }
    ],
    "name": "setContent",
    "outputs": [],
    "payable": false,
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "ensAddr",
        "type": "address"
      }
    ],
    "type": "constructor"
  },
  {
    "payable": false,
    "type": "fallback"
  }
]

var reverseRegistrarContractABI = [
  {
    "constant": false,
    "inputs": [
      {
        "name": "owner",
        "type": "address"
      }
    ],
    "name": "claim",
    "outputs": [
      {
        "name": "node",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "ens",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "addr",
        "type": "address"
      }
    ],
    "name": "node",
    "outputs": [
      {
        "name": "ret",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "rootNode",
    "outputs": [
      {
        "name": "",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "ensAddr",
        "type": "address"
      },
      {
        "name": "node",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "type": "constructor"
  }
]

class ENS {

  constructor(web3) {
    this.web3 = web3;
    this.ensContract = web3.eth.contract(ensContractABI);
    this.ens = this.ensContract.at('0x112234455c3a32fd11230c42e7bccd4a84e02010');
    this.auctionRegistrarContract = web3.eth.contract(auctionRegistrarContractABI);
    this.ethRegistrar = this.auctionRegistrarContract.at(this.ens.owner(this.namehash('eth')));
    this.deedContract = web3.eth.contract(deedContractABI);
    this.fifsRegistrarContract = web3.eth.contract(fifsRegistrarABI);
    this.testRegistrar = this.fifsRegistrarContract.at(this.ens.owner(this.namehash('test')));
    this.resolverContract = web3.eth.contract(resolverContractABI);
    this.publicResolver = this.resolverContract.at('0x4c641fb9bad9b60ef180c31f56051ce826d21a9a');
    this.reverseRegistrarContract = web3.eth.contract(reverseRegistrarContractABI);
    var reverseRegistrar = this.reverseRegistrarContract.at(this.ens.owner(this.namehash('addr.reverse')));
  }

  namehash(name) {
    var node = '0x0000000000000000000000000000000000000000000000000000000000000000';
    if(name != '') {
        var labels = name.split(".");
        for(var i = labels.length - 1; i >= 0; i--) {
            node = this.web3.sha3(node + this.web3.sha3(labels[i]).slice(2), {encoding: 'hex'});
        }
    }
    return node.toString();
  }

  getAddr(name) {
    var node = this.namehash(name)
    var resolverAddress = this.ens.resolver(node);
    if(resolverAddress == '0x0000000000000000000000000000000000000000') {
      return resolverAddress;
    }
    return this.resolverContract.at(resolverAddress).addr(node);
  }

  getContent(name) {
    var node = this.namehash(name)
    var resolverAddress = this.ens.resolver(node);
    if(resolverAddress == '0x0000000000000000000000000000000000000000') {
      return "0x0000000000000000000000000000000000000000000000000000000000000000";
    }
    return this.resolverContract.at(resolverAddress).content(node);
  }

}

module.exports = ENS

testnet-keypairs.txt

// Private Key
23e4dfb937932332a3cf17f1fc0541e7dc2b7d0bef81289bfa04a251443b5666

// Ethereum Address
0x08cf02070bb9f167556c677da58e6678bbe871fc

// Etherscan Account
https://testnet.etherscan.io/address/0x08cf02070bb9f167556c677da58e6678bbe871fc

The new web3 broke a ton of my old code, feels like I'm having to relearn and debug the entire compiling and deploying part all over again.