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const EventEmitter = require('events').EventEmitter
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const inherits = require('util').inherits
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const async = require('async')
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const ethUtil = require('ethereumjs-util')
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const BN = ethUtil.BN
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const EthQuery = require('eth-query')
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const KeyStore = require('eth-lightwallet').keystore
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const clone = require('clone')
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const extend = require('xtend')
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const createId = require('web3-provider-engine/util/random-id')
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const ethBinToOps = require('eth-bin-to-ops')
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const autoFaucet = require('./auto-faucet')
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const messageManager = require('./message-manager')
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const DEFAULT_RPC = 'https://testrpc.metamask.io/'
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const IdManagement = require('./id-management')
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module.exports = IdentityStore
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inherits(IdentityStore, EventEmitter)
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function IdentityStore (opts = {}) {
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EventEmitter.call(this)
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// we just use the ethStore to auto-add accounts
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this._ethStore = opts.ethStore
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this.configManager = opts.configManager
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// lightwallet key store
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this._keyStore = null
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// lightwallet wrapper
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this._idmgmt = null
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this.hdPathString = "m/44'/60'/0'/0"
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this._currentState = {
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selectedAddress: null,
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identities: {},
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}
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// not part of serilized metamask state - only kept in memory
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this._unconfTxCbs = {}
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this._unconfMsgCbs = {}
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}
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//
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// public
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//
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IdentityStore.prototype.createNewVault = function (password, entropy, cb) {
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delete this._keyStore
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var serializedKeystore = this.configManager.getWallet()
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if (serializedKeystore) {
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this.configManager.setData({})
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}
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this.purgeCache()
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this._createVault(password, null, entropy, (err) => {
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if (err) return cb(err)
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this._autoFaucet()
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this.configManager.setShowSeedWords(true)
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var seedWords = this._idmgmt.getSeed()
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this._loadIdentities()
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cb(null, seedWords)
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})
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}
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IdentityStore.prototype.recoverSeed = function (cb) {
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this.configManager.setShowSeedWords(true)
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if (!this._idmgmt) return cb(new Error('Unauthenticated. Please sign in.'))
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var seedWords = this._idmgmt.getSeed()
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cb(null, seedWords)
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}
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IdentityStore.prototype.recoverFromSeed = function (password, seed, cb) {
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this.purgeCache()
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this._createVault(password, seed, null, (err) => {
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if (err) return cb(err)
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this._loadIdentities()
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cb(null, this.getState())
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})
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}
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IdentityStore.prototype.setStore = function (store) {
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this._ethStore = store
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}
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IdentityStore.prototype.clearSeedWordCache = function (cb) {
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const configManager = this.configManager
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configManager.setShowSeedWords(false)
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cb(null, configManager.getSelectedAccount())
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}
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IdentityStore.prototype.getState = function () {
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const configManager = this.configManager
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var seedWords = this.getSeedIfUnlocked()
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return clone(extend(this._currentState, {
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isInitialized: !!configManager.getWallet() && !seedWords,
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isUnlocked: this._isUnlocked(),
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seedWords: seedWords,
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isConfirmed: configManager.getConfirmed(),
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unconfTxs: configManager.unconfirmedTxs(),
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transactions: configManager.getTxList(),
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unconfMsgs: messageManager.unconfirmedMsgs(),
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messages: messageManager.getMsgList(),
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selectedAddress: configManager.getSelectedAccount(),
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shapeShiftTxList: configManager.getShapeShiftTxList(),
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currentFiat: configManager.getCurrentFiat(),
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conversionRate: configManager.getConversionRate(),
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conversionDate: configManager.getConversionDate(),
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gasMultiplier: configManager.getGasMultiplier(),
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}))
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}
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IdentityStore.prototype.getSeedIfUnlocked = function () {
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const configManager = this.configManager
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var showSeed = configManager.getShouldShowSeedWords()
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var idmgmt = this._idmgmt
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var shouldShow = showSeed && !!idmgmt
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var seedWords = shouldShow ? idmgmt.getSeed() : null
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return seedWords
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}
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IdentityStore.prototype.getSelectedAddress = function () {
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const configManager = this.configManager
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return configManager.getSelectedAccount()
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}
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IdentityStore.prototype.setSelectedAddressSync = function (address) {
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const configManager = this.configManager
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if (!address) {
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var addresses = this._getAddresses()
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address = addresses[0]
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}
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configManager.setSelectedAccount(address)
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return address
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}
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IdentityStore.prototype.setSelectedAddress = function (address, cb) {
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const resultAddress = this.setSelectedAddressSync(address)
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if (cb) return cb(null, resultAddress)
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}
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IdentityStore.prototype.revealAccount = function (cb) {
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const derivedKey = this._idmgmt.derivedKey
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const keyStore = this._keyStore
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const configManager = this.configManager
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keyStore.setDefaultHdDerivationPath(this.hdPathString)
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keyStore.generateNewAddress(derivedKey, 1)
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const addresses = keyStore.getAddresses()
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const address = addresses[ addresses.length - 1 ]
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this._ethStore.addAccount(ethUtil.addHexPrefix(address))
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configManager.setWallet(keyStore.serialize())
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this._loadIdentities()
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this._didUpdate()
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cb(null)
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}
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IdentityStore.prototype.getNetwork = function (err) {
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if (err) {
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this._currentState.network = 'loading'
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this._didUpdate()
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}
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this.web3.version.getNetwork((err, network) => {
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if (err) {
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this._currentState.network = 'loading'
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return this._didUpdate()
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}
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if (global.METAMASK_DEBUG) {
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console.log('web3.getNetwork returned ' + network)
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}
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this._currentState.network = network
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this._didUpdate()
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})
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}
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IdentityStore.prototype.setLocked = function (cb) {
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delete this._keyStore
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delete this._idmgmt
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cb()
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}
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IdentityStore.prototype.submitPassword = function (password, cb) {
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const configManager = this.configManager
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this.tryPassword(password, (err) => {
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if (err) return cb(err)
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// load identities before returning...
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this._loadIdentities()
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cb(null, configManager.getSelectedAccount())
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})
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}
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IdentityStore.prototype.exportAccount = function (address, cb) {
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var privateKey = this._idmgmt.exportPrivateKey(address)
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cb(null, privateKey)
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}
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//
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// Transactions
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//
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// comes from dapp via zero-client hooked-wallet provider
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IdentityStore.prototype.addUnconfirmedTransaction = function (txParams, onTxDoneCb, cb) {
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const configManager = this.configManager
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var self = this
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// create txData obj with parameters and meta data
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var time = (new Date()).getTime()
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var txId = createId()
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txParams.metamaskId = txId
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txParams.metamaskNetworkId = self._currentState.network
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var txData = {
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id: txId,
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txParams: txParams,
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time: time,
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status: 'unconfirmed',
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gasMultiplier: configManager.getGasMultiplier() || 1,
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}
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console.log('addUnconfirmedTransaction:', txData)
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// keep the onTxDoneCb around for after approval/denial (requires user interaction)
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// This onTxDoneCb fires completion to the Dapp's write operation.
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self._unconfTxCbs[txId] = onTxDoneCb
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var provider = self._ethStore._query.currentProvider
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var query = new EthQuery(provider)
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// calculate metadata for tx
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async.parallel([
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analyzeForDelegateCall,
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estimateGas,
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], didComplete)
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// perform static analyis on the target contract code
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function analyzeForDelegateCall(cb){
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if (txParams.to) {
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query.getCode(txParams.to, (err, result) => {
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if (err) return cb(err)
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var containsDelegateCall = self.checkForDelegateCall(result)
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txData.containsDelegateCall = containsDelegateCall
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cb()
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})
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} else {
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cb()
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}
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}
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function estimateGas(cb){
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query.estimateGas(txParams, function(err, result){
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if (err) return cb(err)
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txData.estimatedGas = self.addGasBuffer(result)
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cb()
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})
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}
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function didComplete (err) {
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if (err) return cb(err)
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configManager.addTx(txData)
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// signal update
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self._didUpdate()
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// signal completion of add tx
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cb(null, txData)
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}
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}
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IdentityStore.prototype.checkForDelegateCall = function (codeHex) {
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const code = ethUtil.toBuffer(codeHex)
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if (code !== '0x') {
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const ops = ethBinToOps(code)
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const containsDelegateCall = ops.some((op) => op.name === 'DELEGATECALL')
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return containsDelegateCall
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} else {
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return false
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}
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}
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IdentityStore.prototype.addGasBuffer = function (gasHex) {
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var gas = new BN(gasHex, 16)
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var buffer = new BN('100000', 10)
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var result = gas.add(buffer)
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return ethUtil.addHexPrefix(result.toString(16))
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}
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// comes from metamask ui
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IdentityStore.prototype.approveTransaction = function (txId, cb) {
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const configManager = this.configManager
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var approvalCb = this._unconfTxCbs[txId] || noop
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// accept tx
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cb()
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approvalCb(null, true)
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// clean up
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configManager.confirmTx(txId)
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delete this._unconfTxCbs[txId]
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this._didUpdate()
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}
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// comes from metamask ui
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IdentityStore.prototype.cancelTransaction = function (txId) {
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const configManager = this.configManager
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var approvalCb = this._unconfTxCbs[txId] || noop
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// reject tx
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approvalCb(null, false)
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// clean up
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configManager.rejectTx(txId)
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delete this._unconfTxCbs[txId]
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this._didUpdate()
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}
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// performs the actual signing, no autofill of params
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IdentityStore.prototype.signTransaction = function (txParams, cb) {
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try {
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console.log('signing tx...', txParams)
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var rawTx = this._idmgmt.signTx(txParams)
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cb(null, rawTx)
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} catch (err) {
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cb(err)
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}
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}
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//
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// Messages
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//
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// comes from dapp via zero-client hooked-wallet provider
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IdentityStore.prototype.addUnconfirmedMessage = function (msgParams, cb) {
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// create txData obj with parameters and meta data
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var time = (new Date()).getTime()
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var msgId = createId()
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var msgData = {
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id: msgId,
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msgParams: msgParams,
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time: time,
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status: 'unconfirmed',
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}
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messageManager.addMsg(msgData)
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console.log('addUnconfirmedMessage:', msgData)
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// keep the cb around for after approval (requires user interaction)
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// This cb fires completion to the Dapp's write operation.
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this._unconfMsgCbs[msgId] = cb
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// signal update
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this._didUpdate()
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return msgId
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}
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// comes from metamask ui
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IdentityStore.prototype.approveMessage = function (msgId, cb) {
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var approvalCb = this._unconfMsgCbs[msgId] || noop
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// accept msg
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|
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cb()
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approvalCb(null, true)
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|
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// clean up
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messageManager.confirmMsg(msgId)
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delete this._unconfMsgCbs[msgId]
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this._didUpdate()
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}
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// comes from metamask ui
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IdentityStore.prototype.cancelMessage = function (msgId) {
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var approvalCb = this._unconfMsgCbs[msgId] || noop
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// reject tx
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approvalCb(null, false)
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|
|
// clean up
|
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|
messageManager.rejectMsg(msgId)
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|
delete this._unconfTxCbs[msgId]
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|
|
this._didUpdate()
|
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|
}
|
|
|
|
|
|
|
|
// performs the actual signing, no autofill of params
|
|
|
|
IdentityStore.prototype.signMessage = function (msgParams, cb) {
|
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|
|
try {
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|
console.log('signing msg...', msgParams.data)
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|
|
var rawMsg = this._idmgmt.signMsg(msgParams.from, msgParams.data)
|
|
|
|
if ('metamaskId' in msgParams) {
|
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|
|
var id = msgParams.metamaskId
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|
|
delete msgParams.metamaskId
|
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|
|
this.approveMessage(id, cb)
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|
} else {
|
|
|
|
cb(null, rawMsg)
|
|
|
|
}
|
|
|
|
} catch (err) {
|
|
|
|
cb(err)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
//
|
|
|
|
// private
|
|
|
|
//
|
|
|
|
|
|
|
|
IdentityStore.prototype._didUpdate = function () {
|
|
|
|
this.emit('update', this.getState())
|
|
|
|
}
|
|
|
|
|
|
|
|
IdentityStore.prototype._isUnlocked = function () {
|
|
|
|
var result = Boolean(this._keyStore) && Boolean(this._idmgmt)
|
|
|
|
return result
|
|
|
|
}
|
|
|
|
|
|
|
|
// load identities from keyStoreet
|
|
|
|
IdentityStore.prototype._loadIdentities = function () {
|
|
|
|
const configManager = this.configManager
|
|
|
|
if (!this._isUnlocked()) throw new Error('not unlocked')
|
|
|
|
|
|
|
|
var addresses = this._getAddresses()
|
|
|
|
addresses.forEach((address, i) => {
|
|
|
|
// // add to ethStore
|
|
|
|
if (this._ethStore) {
|
|
|
|
this._ethStore.addAccount(ethUtil.addHexPrefix(address))
|
|
|
|
}
|
|
|
|
// add to identities
|
|
|
|
const defaultLabel = 'Account ' + (i + 1)
|
|
|
|
const nickname = configManager.nicknameForWallet(address)
|
|
|
|
var identity = {
|
|
|
|
name: nickname || defaultLabel,
|
|
|
|
address: address,
|
|
|
|
mayBeFauceting: this._mayBeFauceting(i),
|
|
|
|
}
|
|
|
|
this._currentState.identities[address] = identity
|
|
|
|
})
|
|
|
|
this._didUpdate()
|
|
|
|
}
|
|
|
|
|
|
|
|
IdentityStore.prototype.saveAccountLabel = function (account, label, cb) {
|
|
|
|
const configManager = this.configManager
|
|
|
|
configManager.setNicknameForWallet(account, label)
|
|
|
|
this._loadIdentities()
|
|
|
|
cb(null, label)
|
|
|
|
}
|
|
|
|
|
|
|
|
// mayBeFauceting
|
|
|
|
// If on testnet, index 0 may be fauceting.
|
|
|
|
// The UI will have to check the balance to know.
|
|
|
|
// If there is no balance and it mayBeFauceting,
|
|
|
|
// then it is in fact fauceting.
|
|
|
|
IdentityStore.prototype._mayBeFauceting = function (i) {
|
|
|
|
const configManager = this.configManager
|
|
|
|
var config = configManager.getProvider()
|
|
|
|
if (i === 0 &&
|
|
|
|
config.type === 'rpc' &&
|
|
|
|
config.rpcTarget === DEFAULT_RPC) {
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
|
|
|
|
//
|
|
|
|
// keyStore managment - unlocking + deserialization
|
|
|
|
//
|
|
|
|
|
|
|
|
IdentityStore.prototype.tryPassword = function (password, cb) {
|
|
|
|
var serializedKeystore = this.configManager.getWallet()
|
|
|
|
var keyStore = KeyStore.deserialize(serializedKeystore)
|
|
|
|
|
|
|
|
keyStore.keyFromPassword(password, (err, pwDerivedKey) => {
|
|
|
|
if (err) return cb(err)
|
|
|
|
|
|
|
|
const isCorrect = keyStore.isDerivedKeyCorrect(pwDerivedKey)
|
|
|
|
if (!isCorrect) return cb(new Error('Lightwallet - password incorrect'))
|
|
|
|
|
|
|
|
this._keyStore = keyStore
|
|
|
|
this._createIdMgmt(pwDerivedKey)
|
|
|
|
cb()
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
IdentityStore.prototype._createVault = function (password, seedPhrase, entropy, cb) {
|
|
|
|
const opts = {
|
|
|
|
password,
|
|
|
|
hdPathString: this.hdPathString,
|
|
|
|
}
|
|
|
|
|
|
|
|
if (seedPhrase) {
|
|
|
|
opts.seedPhrase = seedPhrase
|
|
|
|
}
|
|
|
|
|
|
|
|
KeyStore.createVault(opts, (err, keyStore) => {
|
|
|
|
if (err) return cb(err)
|
|
|
|
|
|
|
|
this._keyStore = keyStore
|
|
|
|
|
|
|
|
keyStore.keyFromPassword(password, (err, derivedKey) => {
|
|
|
|
if (err) return cb(err)
|
|
|
|
|
|
|
|
this.purgeCache()
|
|
|
|
|
|
|
|
keyStore.addHdDerivationPath(this.hdPathString, derivedKey, {curve: 'secp256k1', purpose: 'sign'})
|
|
|
|
|
|
|
|
this._createFirstWallet(derivedKey)
|
|
|
|
this._createIdMgmt(derivedKey)
|
|
|
|
this.setSelectedAddressSync()
|
|
|
|
|
|
|
|
cb()
|
|
|
|
})
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
IdentityStore.prototype._createIdMgmt = function (derivedKey) {
|
|
|
|
this._idmgmt = new IdManagement({
|
|
|
|
keyStore: this._keyStore,
|
|
|
|
derivedKey: derivedKey,
|
|
|
|
configManager: this.configManager,
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
IdentityStore.prototype.purgeCache = function () {
|
|
|
|
this._currentState.identities = {}
|
|
|
|
let accounts
|
|
|
|
try {
|
|
|
|
accounts = Object.keys(this._ethStore._currentState.accounts)
|
|
|
|
} catch (e) {
|
|
|
|
accounts = []
|
|
|
|
}
|
|
|
|
accounts.forEach((address) => {
|
|
|
|
this._ethStore.removeAccount(address)
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
IdentityStore.prototype._createFirstWallet = function (derivedKey) {
|
|
|
|
const keyStore = this._keyStore
|
|
|
|
keyStore.setDefaultHdDerivationPath(this.hdPathString)
|
|
|
|
keyStore.generateNewAddress(derivedKey, 1)
|
|
|
|
this.configManager.setWallet(keyStore.serialize())
|
|
|
|
var addresses = keyStore.getAddresses()
|
|
|
|
this._ethStore.addAccount(ethUtil.addHexPrefix(addresses[0]))
|
|
|
|
}
|
|
|
|
|
|
|
|
// get addresses and normalize address hexString
|
|
|
|
IdentityStore.prototype._getAddresses = function () {
|
|
|
|
return this._keyStore.getAddresses(this.hdPathString).map((address) => {
|
|
|
|
return ethUtil.addHexPrefix(address)
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
IdentityStore.prototype._autoFaucet = function () {
|
|
|
|
var addresses = this._getAddresses()
|
|
|
|
autoFaucet(addresses[0])
|
|
|
|
}
|
|
|
|
|
|
|
|
// util
|
|
|
|
|
|
|
|
function noop () {}
|